hpsa.c 279.3 KB
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/*
 *    Disk Array driver for HP Smart Array SAS controllers
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 *    Copyright 2016 Microsemi Corporation
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 *    Copyright 2014-2015 PMC-Sierra, Inc.
 *    Copyright 2000,2009-2015 Hewlett-Packard Development Company, L.P.
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 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; version 2 of the License.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 *    NON INFRINGEMENT.  See the GNU General Public License for more details.
 *
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 *    Questions/Comments/Bugfixes to esc.storagedev@microsemi.com
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 *
 */

#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/types.h>
#include <linux/pci.h>
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#include <linux/pci-aspm.h>
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#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/compat.h>
#include <linux/blktrace_api.h>
#include <linux/uaccess.h>
#include <linux/io.h>
#include <linux/dma-mapping.h>
#include <linux/completion.h>
#include <linux/moduleparam.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/scsi_eh.h>
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#include <scsi/scsi_transport_sas.h>
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#include <scsi/scsi_dbg.h>
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#include <linux/cciss_ioctl.h>
#include <linux/string.h>
#include <linux/bitmap.h>
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#include <linux/atomic.h>
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#include <linux/jiffies.h>
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#include <linux/percpu-defs.h>
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#include <linux/percpu.h>
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#include <asm/unaligned.h>
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#include <asm/div64.h>
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#include "hpsa_cmd.h"
#include "hpsa.h"

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/*
 * HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.'
 * with an optional trailing '-' followed by a byte value (0-255).
 */
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#define HPSA_DRIVER_VERSION "3.4.18-0"
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#define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
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#define HPSA "hpsa"
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/* How long to wait for CISS doorbell communication */
#define CLEAR_EVENT_WAIT_INTERVAL 20	/* ms for each msleep() call */
#define MODE_CHANGE_WAIT_INTERVAL 10	/* ms for each msleep() call */
#define MAX_CLEAR_EVENT_WAIT 30000	/* times 20 ms = 600 s */
#define MAX_MODE_CHANGE_WAIT 2000	/* times 10 ms = 20 s */
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#define MAX_IOCTL_CONFIG_WAIT 1000

/*define how many times we will try a command because of bus resets */
#define MAX_CMD_RETRIES 3

/* Embedded module documentation macros - see modules.h */
MODULE_AUTHOR("Hewlett-Packard Company");
MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
	HPSA_DRIVER_VERSION);
MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
MODULE_VERSION(HPSA_DRIVER_VERSION);
MODULE_LICENSE("GPL");

static int hpsa_allow_any;
module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(hpsa_allow_any,
		"Allow hpsa driver to access unknown HP Smart Array hardware");
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static int hpsa_simple_mode;
module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(hpsa_simple_mode,
	"Use 'simple mode' rather than 'performant mode'");
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/* define the PCI info for the cards we can control */
static const struct pci_device_id hpsa_pci_device_id[] = {
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x3241},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x3243},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x3245},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x3247},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x3249},
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	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x324A},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x324B},
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	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x3233},
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	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSF,     0x103C, 0x3350},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSF,     0x103C, 0x3351},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSF,     0x103C, 0x3352},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSF,     0x103C, 0x3353},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSF,     0x103C, 0x3354},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSF,     0x103C, 0x3355},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSF,     0x103C, 0x3356},
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	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103c, 0x1920},
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	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1921},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1922},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1923},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1924},
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	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103c, 0x1925},
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	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1926},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1928},
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	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1929},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21BD},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21BE},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21BF},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C0},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C1},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C2},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C3},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C4},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C5},
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	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C6},
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	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C7},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C8},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C9},
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	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21CA},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21CB},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21CC},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21CD},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21CE},
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	{PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0580},
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	{PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0581},
	{PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0582},
	{PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0583},
	{PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0584},
	{PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0585},
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	{PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0076},
	{PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0087},
	{PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x007D},
	{PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0088},
	{PCI_VENDOR_ID_HP, 0x333f, 0x103c, 0x333f},
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	{PCI_VENDOR_ID_HP,     PCI_ANY_ID,	PCI_ANY_ID, PCI_ANY_ID,
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		PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
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	{0,}
};

MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id);

/*  board_id = Subsystem Device ID & Vendor ID
 *  product = Marketing Name for the board
 *  access = Address of the struct of function pointers
 */
static struct board_type products[] = {
	{0x3241103C, "Smart Array P212", &SA5_access},
	{0x3243103C, "Smart Array P410", &SA5_access},
	{0x3245103C, "Smart Array P410i", &SA5_access},
	{0x3247103C, "Smart Array P411", &SA5_access},
	{0x3249103C, "Smart Array P812", &SA5_access},
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	{0x324A103C, "Smart Array P712m", &SA5_access},
	{0x324B103C, "Smart Array P711m", &SA5_access},
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	{0x3233103C, "HP StorageWorks 1210m", &SA5_access}, /* alias of 333f */
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	{0x3350103C, "Smart Array P222", &SA5_access},
	{0x3351103C, "Smart Array P420", &SA5_access},
	{0x3352103C, "Smart Array P421", &SA5_access},
	{0x3353103C, "Smart Array P822", &SA5_access},
	{0x3354103C, "Smart Array P420i", &SA5_access},
	{0x3355103C, "Smart Array P220i", &SA5_access},
	{0x3356103C, "Smart Array P721m", &SA5_access},
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	{0x1920103C, "Smart Array P430i", &SA5_access},
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	{0x1921103C, "Smart Array P830i", &SA5_access},
	{0x1922103C, "Smart Array P430", &SA5_access},
	{0x1923103C, "Smart Array P431", &SA5_access},
	{0x1924103C, "Smart Array P830", &SA5_access},
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	{0x1925103C, "Smart Array P831", &SA5_access},
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	{0x1926103C, "Smart Array P731m", &SA5_access},
	{0x1928103C, "Smart Array P230i", &SA5_access},
	{0x1929103C, "Smart Array P530", &SA5_access},
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	{0x21BD103C, "Smart Array P244br", &SA5_access},
	{0x21BE103C, "Smart Array P741m", &SA5_access},
	{0x21BF103C, "Smart HBA H240ar", &SA5_access},
	{0x21C0103C, "Smart Array P440ar", &SA5_access},
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	{0x21C1103C, "Smart Array P840ar", &SA5_access},
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	{0x21C2103C, "Smart Array P440", &SA5_access},
	{0x21C3103C, "Smart Array P441", &SA5_access},
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	{0x21C4103C, "Smart Array", &SA5_access},
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	{0x21C5103C, "Smart Array P841", &SA5_access},
	{0x21C6103C, "Smart HBA H244br", &SA5_access},
	{0x21C7103C, "Smart HBA H240", &SA5_access},
	{0x21C8103C, "Smart HBA H241", &SA5_access},
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	{0x21C9103C, "Smart Array", &SA5_access},
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	{0x21CA103C, "Smart Array P246br", &SA5_access},
	{0x21CB103C, "Smart Array P840", &SA5_access},
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	{0x21CC103C, "Smart Array", &SA5_access},
	{0x21CD103C, "Smart Array", &SA5_access},
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	{0x21CE103C, "Smart HBA", &SA5_access},
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	{0x05809005, "SmartHBA-SA", &SA5_access},
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	{0x05819005, "SmartHBA-SA 8i", &SA5_access},
	{0x05829005, "SmartHBA-SA 8i8e", &SA5_access},
	{0x05839005, "SmartHBA-SA 8e", &SA5_access},
	{0x05849005, "SmartHBA-SA 16i", &SA5_access},
	{0x05859005, "SmartHBA-SA 4i4e", &SA5_access},
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	{0x00761590, "HP Storage P1224 Array Controller", &SA5_access},
	{0x00871590, "HP Storage P1224e Array Controller", &SA5_access},
	{0x007D1590, "HP Storage P1228 Array Controller", &SA5_access},
	{0x00881590, "HP Storage P1228e Array Controller", &SA5_access},
	{0x333f103c, "HP StorageWorks 1210m Array Controller", &SA5_access},
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	{0xFFFF103C, "Unknown Smart Array", &SA5_access},
};

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static struct scsi_transport_template *hpsa_sas_transport_template;
static int hpsa_add_sas_host(struct ctlr_info *h);
static void hpsa_delete_sas_host(struct ctlr_info *h);
static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node,
			struct hpsa_scsi_dev_t *device);
static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device);
static struct hpsa_scsi_dev_t
	*hpsa_find_device_by_sas_rphy(struct ctlr_info *h,
		struct sas_rphy *rphy);

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#define SCSI_CMD_BUSY ((struct scsi_cmnd *)&hpsa_cmd_busy)
static const struct scsi_cmnd hpsa_cmd_busy;
#define SCSI_CMD_IDLE ((struct scsi_cmnd *)&hpsa_cmd_idle)
static const struct scsi_cmnd hpsa_cmd_idle;
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static int number_of_controllers;

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static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id);
static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id);
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static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
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#ifdef CONFIG_COMPAT
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static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd,
	void __user *arg);
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#endif

static void cmd_free(struct ctlr_info *h, struct CommandList *c);
static struct CommandList *cmd_alloc(struct ctlr_info *h);
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static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c);
static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
					    struct scsi_cmnd *scmd);
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static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
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	void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
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	int cmd_type);
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static void hpsa_free_cmd_pool(struct ctlr_info *h);
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#define VPD_PAGE (1 << 8)
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#define HPSA_SIMPLE_ERROR_BITS 0x03
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static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
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static void hpsa_scan_start(struct Scsi_Host *);
static int hpsa_scan_finished(struct Scsi_Host *sh,
	unsigned long elapsed_time);
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static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth);
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static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
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static int hpsa_eh_abort_handler(struct scsi_cmnd *scsicmd);
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static int hpsa_slave_alloc(struct scsi_device *sdev);
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static int hpsa_slave_configure(struct scsi_device *sdev);
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static void hpsa_slave_destroy(struct scsi_device *sdev);

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static void hpsa_update_scsi_devices(struct ctlr_info *h);
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static int check_for_unit_attention(struct ctlr_info *h,
	struct CommandList *c);
static void check_ioctl_unit_attention(struct ctlr_info *h,
	struct CommandList *c);
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/* performant mode helper functions */
static void calc_bucket_map(int *bucket, int num_buckets,
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	int nsgs, int min_blocks, u32 *bucket_map);
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static void hpsa_free_performant_mode(struct ctlr_info *h);
static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h);
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static inline u32 next_command(struct ctlr_info *h, u8 q);
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static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
			       u32 *cfg_base_addr, u64 *cfg_base_addr_index,
			       u64 *cfg_offset);
static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
				    unsigned long *memory_bar);
static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id);
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static int wait_for_device_to_become_ready(struct ctlr_info *h,
					   unsigned char lunaddr[],
					   int reply_queue);
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static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
				     int wait_for_ready);
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static inline void finish_cmd(struct CommandList *c);
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static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h);
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#define BOARD_NOT_READY 0
#define BOARD_READY 1
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static void hpsa_drain_accel_commands(struct ctlr_info *h);
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static void hpsa_flush_cache(struct ctlr_info *h);
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static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
	struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
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	u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk);
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static void hpsa_command_resubmit_worker(struct work_struct *work);
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static u32 lockup_detected(struct ctlr_info *h);
static int detect_controller_lockup(struct ctlr_info *h);
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static void hpsa_disable_rld_caching(struct ctlr_info *h);
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static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
	struct ReportExtendedLUNdata *buf, int bufsize);
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static bool hpsa_vpd_page_supported(struct ctlr_info *h,
	unsigned char scsi3addr[], u8 page);
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static int hpsa_luns_changed(struct ctlr_info *h);
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static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
			       struct hpsa_scsi_dev_t *dev,
			       unsigned char *scsi3addr);
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static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
{
	unsigned long *priv = shost_priv(sdev->host);
	return (struct ctlr_info *) *priv;
}

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static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh)
{
	unsigned long *priv = shost_priv(sh);
	return (struct ctlr_info *) *priv;
}

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static inline bool hpsa_is_cmd_idle(struct CommandList *c)
{
	return c->scsi_cmd == SCSI_CMD_IDLE;
}

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static inline bool hpsa_is_pending_event(struct CommandList *c)
{
	return c->abort_pending || c->reset_pending;
}

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/* extract sense key, asc, and ascq from sense data.  -1 means invalid. */
static void decode_sense_data(const u8 *sense_data, int sense_data_len,
			u8 *sense_key, u8 *asc, u8 *ascq)
{
	struct scsi_sense_hdr sshdr;
	bool rc;

	*sense_key = -1;
	*asc = -1;
	*ascq = -1;

	if (sense_data_len < 1)
		return;

	rc = scsi_normalize_sense(sense_data, sense_data_len, &sshdr);
	if (rc) {
		*sense_key = sshdr.sense_key;
		*asc = sshdr.asc;
		*ascq = sshdr.ascq;
	}
}

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static int check_for_unit_attention(struct ctlr_info *h,
	struct CommandList *c)
{
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	u8 sense_key, asc, ascq;
	int sense_len;

	if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
		sense_len = sizeof(c->err_info->SenseInfo);
	else
		sense_len = c->err_info->SenseLen;

	decode_sense_data(c->err_info->SenseInfo, sense_len,
				&sense_key, &asc, &ascq);
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	if (sense_key != UNIT_ATTENTION || asc == 0xff)
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		return 0;

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	switch (asc) {
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	case STATE_CHANGED:
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		dev_warn(&h->pdev->dev,
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			"%s: a state change detected, command retried\n",
			h->devname);
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		break;
	case LUN_FAILED:
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		dev_warn(&h->pdev->dev,
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			"%s: LUN failure detected\n", h->devname);
379 380
		break;
	case REPORT_LUNS_CHANGED:
381
		dev_warn(&h->pdev->dev,
382
			"%s: report LUN data changed\n", h->devname);
383
	/*
384 385
	 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external
	 * target (array) devices.
386 387 388
	 */
		break;
	case POWER_OR_RESET:
389 390 391
		dev_warn(&h->pdev->dev,
			"%s: a power on or device reset detected\n",
			h->devname);
392 393
		break;
	case UNIT_ATTENTION_CLEARED:
394 395 396
		dev_warn(&h->pdev->dev,
			"%s: unit attention cleared by another initiator\n",
			h->devname);
397 398
		break;
	default:
399 400 401
		dev_warn(&h->pdev->dev,
			"%s: unknown unit attention detected\n",
			h->devname);
402 403 404 405 406
		break;
	}
	return 1;
}

407 408 409 410 411 412 413 414 415 416
static int check_for_busy(struct ctlr_info *h, struct CommandList *c)
{
	if (c->err_info->CommandStatus != CMD_TARGET_STATUS ||
		(c->err_info->ScsiStatus != SAM_STAT_BUSY &&
		 c->err_info->ScsiStatus != SAM_STAT_TASK_SET_FULL))
		return 0;
	dev_warn(&h->pdev->dev, HPSA "device busy");
	return 1;
}

417 418 419 420 421 422 423 424 425 426 427 428 429 430
static u32 lockup_detected(struct ctlr_info *h);
static ssize_t host_show_lockup_detected(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	int ld;
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);

	h = shost_to_hba(shost);
	ld = lockup_detected(h);

	return sprintf(buf, "ld=%d\n", ld);
}

431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454
static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev,
					 struct device_attribute *attr,
					 const char *buf, size_t count)
{
	int status, len;
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);
	char tmpbuf[10];

	if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
		return -EACCES;
	len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
	strncpy(tmpbuf, buf, len);
	tmpbuf[len] = '\0';
	if (sscanf(tmpbuf, "%d", &status) != 1)
		return -EINVAL;
	h = shost_to_hba(shost);
	h->acciopath_status = !!status;
	dev_warn(&h->pdev->dev,
		"hpsa: HP SSD Smart Path %s via sysfs update.\n",
		h->acciopath_status ? "enabled" : "disabled");
	return count;
}

455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479
static ssize_t host_store_raid_offload_debug(struct device *dev,
					 struct device_attribute *attr,
					 const char *buf, size_t count)
{
	int debug_level, len;
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);
	char tmpbuf[10];

	if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
		return -EACCES;
	len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
	strncpy(tmpbuf, buf, len);
	tmpbuf[len] = '\0';
	if (sscanf(tmpbuf, "%d", &debug_level) != 1)
		return -EINVAL;
	if (debug_level < 0)
		debug_level = 0;
	h = shost_to_hba(shost);
	h->raid_offload_debug = debug_level;
	dev_warn(&h->pdev->dev, "hpsa: Set raid_offload_debug level = %d\n",
		h->raid_offload_debug);
	return count;
}

480 481 482 483 484 485
static ssize_t host_store_rescan(struct device *dev,
				 struct device_attribute *attr,
				 const char *buf, size_t count)
{
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);
486
	h = shost_to_hba(shost);
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487
	hpsa_scan_start(h->scsi_host);
488 489 490
	return count;
}

491 492 493 494 495 496 497 498 499 500 501 502 503 504 505
static ssize_t host_show_firmware_revision(struct device *dev,
	     struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);
	unsigned char *fwrev;

	h = shost_to_hba(shost);
	if (!h->hba_inquiry_data)
		return 0;
	fwrev = &h->hba_inquiry_data[32];
	return snprintf(buf, 20, "%c%c%c%c\n",
		fwrev[0], fwrev[1], fwrev[2], fwrev[3]);
}

506 507 508 509 510 511
static ssize_t host_show_commands_outstanding(struct device *dev,
	     struct device_attribute *attr, char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct ctlr_info *h = shost_to_hba(shost);

512 513
	return snprintf(buf, 20, "%d\n",
			atomic_read(&h->commands_outstanding));
514 515
}

516 517 518 519 520 521 522 523
static ssize_t host_show_transport_mode(struct device *dev,
	struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);

	h = shost_to_hba(shost);
	return snprintf(buf, 20, "%s\n",
524
		h->transMethod & CFGTBL_Trans_Performant ?
525 526 527
			"performant" : "simple");
}

528 529 530 531 532 533 534 535 536 537 538
static ssize_t host_show_hp_ssd_smart_path_status(struct device *dev,
	struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);

	h = shost_to_hba(shost);
	return snprintf(buf, 30, "HP SSD Smart Path %s\n",
		(h->acciopath_status == 1) ?  "enabled" : "disabled");
}

539
/* List of controllers which cannot be hard reset on kexec with reset_devices */
540 541
static u32 unresettable_controller[] = {
	0x324a103C, /* Smart Array P712m */
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	0x324b103C, /* Smart Array P711m */
543 544 545 546 547 548 549 550 551 552
	0x3223103C, /* Smart Array P800 */
	0x3234103C, /* Smart Array P400 */
	0x3235103C, /* Smart Array P400i */
	0x3211103C, /* Smart Array E200i */
	0x3212103C, /* Smart Array E200 */
	0x3213103C, /* Smart Array E200i */
	0x3214103C, /* Smart Array E200i */
	0x3215103C, /* Smart Array E200i */
	0x3237103C, /* Smart Array E500 */
	0x323D103C, /* Smart Array P700m */
553
	0x40800E11, /* Smart Array 5i */
554 555
	0x409C0E11, /* Smart Array 6400 */
	0x409D0E11, /* Smart Array 6400 EM */
556 557 558 559 560 561
	0x40700E11, /* Smart Array 5300 */
	0x40820E11, /* Smart Array 532 */
	0x40830E11, /* Smart Array 5312 */
	0x409A0E11, /* Smart Array 641 */
	0x409B0E11, /* Smart Array 642 */
	0x40910E11, /* Smart Array 6i */
562 563
};

564 565
/* List of controllers which cannot even be soft reset */
static u32 soft_unresettable_controller[] = {
566
	0x40800E11, /* Smart Array 5i */
567 568 569 570 571 572
	0x40700E11, /* Smart Array 5300 */
	0x40820E11, /* Smart Array 532 */
	0x40830E11, /* Smart Array 5312 */
	0x409A0E11, /* Smart Array 641 */
	0x409B0E11, /* Smart Array 642 */
	0x40910E11, /* Smart Array 6i */
573 574 575 576 577 578 579 580 581 582 583
	/* Exclude 640x boards.  These are two pci devices in one slot
	 * which share a battery backed cache module.  One controls the
	 * cache, the other accesses the cache through the one that controls
	 * it.  If we reset the one controlling the cache, the other will
	 * likely not be happy.  Just forbid resetting this conjoined mess.
	 * The 640x isn't really supported by hpsa anyway.
	 */
	0x409C0E11, /* Smart Array 6400 */
	0x409D0E11, /* Smart Array 6400 EM */
};

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584 585 586 587 588 589 590
static u32 needs_abort_tags_swizzled[] = {
	0x323D103C, /* Smart Array P700m */
	0x324a103C, /* Smart Array P712m */
	0x324b103C, /* SmartArray P711m */
};

static int board_id_in_array(u32 a[], int nelems, u32 board_id)
591 592 593
{
	int i;

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594 595 596 597
	for (i = 0; i < nelems; i++)
		if (a[i] == board_id)
			return 1;
	return 0;
598 599
}

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600
static int ctlr_is_hard_resettable(u32 board_id)
601
{
S
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602 603 604
	return !board_id_in_array(unresettable_controller,
			ARRAY_SIZE(unresettable_controller), board_id);
}
605

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606 607 608 609
static int ctlr_is_soft_resettable(u32 board_id)
{
	return !board_id_in_array(soft_unresettable_controller,
			ARRAY_SIZE(soft_unresettable_controller), board_id);
610 611
}

612 613 614 615 616 617
static int ctlr_is_resettable(u32 board_id)
{
	return ctlr_is_hard_resettable(board_id) ||
		ctlr_is_soft_resettable(board_id);
}

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618 619 620 621 622 623
static int ctlr_needs_abort_tags_swizzled(u32 board_id)
{
	return board_id_in_array(needs_abort_tags_swizzled,
			ARRAY_SIZE(needs_abort_tags_swizzled), board_id);
}

624 625 626 627 628 629 630
static ssize_t host_show_resettable(struct device *dev,
	struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);

	h = shost_to_hba(shost);
631
	return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id));
632 633
}

634 635 636 637 638
static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
{
	return (scsi3addr[3] & 0xC0) == 0x40;
}

639
static const char * const raid_label[] = { "0", "4", "1(+0)", "5", "5+1", "6",
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Don Brace 已提交
640
	"1(+0)ADM", "UNKNOWN", "PHYS DRV"
641
};
642 643 644 645 646 647 648
#define HPSA_RAID_0	0
#define HPSA_RAID_4	1
#define HPSA_RAID_1	2	/* also used for RAID 10 */
#define HPSA_RAID_5	3	/* also used for RAID 50 */
#define HPSA_RAID_51	4
#define HPSA_RAID_6	5	/* also used for RAID 60 */
#define HPSA_RAID_ADM	6	/* also used for RAID 1+0 ADM */
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#define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 2)
#define PHYSICAL_DRIVE (ARRAY_SIZE(raid_label) - 1)
651

652 653 654 655
static inline bool is_logical_device(struct hpsa_scsi_dev_t *device)
{
	return !device->physical_device;
}
656 657 658 659 660

static ssize_t raid_level_show(struct device *dev,
	     struct device_attribute *attr, char *buf)
{
	ssize_t l = 0;
661
	unsigned char rlevel;
662 663 664 665 666 667 668 669 670 671 672 673 674 675 676
	struct ctlr_info *h;
	struct scsi_device *sdev;
	struct hpsa_scsi_dev_t *hdev;
	unsigned long flags;

	sdev = to_scsi_device(dev);
	h = sdev_to_hba(sdev);
	spin_lock_irqsave(&h->lock, flags);
	hdev = sdev->hostdata;
	if (!hdev) {
		spin_unlock_irqrestore(&h->lock, flags);
		return -ENODEV;
	}

	/* Is this even a logical drive? */
677
	if (!is_logical_device(hdev)) {
678 679 680 681 682 683 684
		spin_unlock_irqrestore(&h->lock, flags);
		l = snprintf(buf, PAGE_SIZE, "N/A\n");
		return l;
	}

	rlevel = hdev->raid_level;
	spin_unlock_irqrestore(&h->lock, flags);
685
	if (rlevel > RAID_UNKNOWN)
686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709
		rlevel = RAID_UNKNOWN;
	l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
	return l;
}

static ssize_t lunid_show(struct device *dev,
	     struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct scsi_device *sdev;
	struct hpsa_scsi_dev_t *hdev;
	unsigned long flags;
	unsigned char lunid[8];

	sdev = to_scsi_device(dev);
	h = sdev_to_hba(sdev);
	spin_lock_irqsave(&h->lock, flags);
	hdev = sdev->hostdata;
	if (!hdev) {
		spin_unlock_irqrestore(&h->lock, flags);
		return -ENODEV;
	}
	memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
	spin_unlock_irqrestore(&h->lock, flags);
710
	return snprintf(buf, 20, "0x%8phN\n", lunid);
711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740
}

static ssize_t unique_id_show(struct device *dev,
	     struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct scsi_device *sdev;
	struct hpsa_scsi_dev_t *hdev;
	unsigned long flags;
	unsigned char sn[16];

	sdev = to_scsi_device(dev);
	h = sdev_to_hba(sdev);
	spin_lock_irqsave(&h->lock, flags);
	hdev = sdev->hostdata;
	if (!hdev) {
		spin_unlock_irqrestore(&h->lock, flags);
		return -ENODEV;
	}
	memcpy(sn, hdev->device_id, sizeof(sn));
	spin_unlock_irqrestore(&h->lock, flags);
	return snprintf(buf, 16 * 2 + 2,
			"%02X%02X%02X%02X%02X%02X%02X%02X"
			"%02X%02X%02X%02X%02X%02X%02X%02X\n",
			sn[0], sn[1], sn[2], sn[3],
			sn[4], sn[5], sn[6], sn[7],
			sn[8], sn[9], sn[10], sn[11],
			sn[12], sn[13], sn[14], sn[15]);
}

741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763
static ssize_t sas_address_show(struct device *dev,
	      struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct scsi_device *sdev;
	struct hpsa_scsi_dev_t *hdev;
	unsigned long flags;
	u64 sas_address;

	sdev = to_scsi_device(dev);
	h = sdev_to_hba(sdev);
	spin_lock_irqsave(&h->lock, flags);
	hdev = sdev->hostdata;
	if (!hdev || is_logical_device(hdev) || !hdev->expose_device) {
		spin_unlock_irqrestore(&h->lock, flags);
		return -ENODEV;
	}
	sas_address = hdev->sas_address;
	spin_unlock_irqrestore(&h->lock, flags);

	return snprintf(buf, PAGE_SIZE, "0x%016llx\n", sas_address);
}

764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785
static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev,
	     struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct scsi_device *sdev;
	struct hpsa_scsi_dev_t *hdev;
	unsigned long flags;
	int offload_enabled;

	sdev = to_scsi_device(dev);
	h = sdev_to_hba(sdev);
	spin_lock_irqsave(&h->lock, flags);
	hdev = sdev->hostdata;
	if (!hdev) {
		spin_unlock_irqrestore(&h->lock, flags);
		return -ENODEV;
	}
	offload_enabled = hdev->offload_enabled;
	spin_unlock_irqrestore(&h->lock, flags);
	return snprintf(buf, 20, "%d\n", offload_enabled);
}

786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820
#define MAX_PATHS 8
static ssize_t path_info_show(struct device *dev,
	     struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct scsi_device *sdev;
	struct hpsa_scsi_dev_t *hdev;
	unsigned long flags;
	int i;
	int output_len = 0;
	u8 box;
	u8 bay;
	u8 path_map_index = 0;
	char *active;
	unsigned char phys_connector[2];

	sdev = to_scsi_device(dev);
	h = sdev_to_hba(sdev);
	spin_lock_irqsave(&h->devlock, flags);
	hdev = sdev->hostdata;
	if (!hdev) {
		spin_unlock_irqrestore(&h->devlock, flags);
		return -ENODEV;
	}

	bay = hdev->bay;
	for (i = 0; i < MAX_PATHS; i++) {
		path_map_index = 1<<i;
		if (i == hdev->active_path_index)
			active = "Active";
		else if (hdev->path_map & path_map_index)
			active = "Inactive";
		else
			continue;

821 822 823
		output_len += scnprintf(buf + output_len,
				PAGE_SIZE - output_len,
				"[%d:%d:%d:%d] %20.20s ",
824 825 826 827
				h->scsi_host->host_no,
				hdev->bus, hdev->target, hdev->lun,
				scsi_device_type(hdev->devtype));

828
		if (hdev->devtype == TYPE_RAID || is_logical_device(hdev)) {
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829
			output_len += scnprintf(buf + output_len,
830 831
						PAGE_SIZE - output_len,
						"%s\n", active);
832 833 834 835 836 837 838 839 840 841
			continue;
		}

		box = hdev->box[i];
		memcpy(&phys_connector, &hdev->phys_connector[i],
			sizeof(phys_connector));
		if (phys_connector[0] < '0')
			phys_connector[0] = '0';
		if (phys_connector[1] < '0')
			phys_connector[1] = '0';
842
		output_len += scnprintf(buf + output_len,
843
				PAGE_SIZE - output_len,
844 845
				"PORT: %.2s ",
				phys_connector);
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846 847
		if ((hdev->devtype == TYPE_DISK || hdev->devtype == TYPE_ZBC) &&
			hdev->expose_device) {
848
			if (box == 0 || box == 0xFF) {
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849
				output_len += scnprintf(buf + output_len,
850
					PAGE_SIZE - output_len,
851 852 853
					"BAY: %hhu %s\n",
					bay, active);
			} else {
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854
				output_len += scnprintf(buf + output_len,
855
					PAGE_SIZE - output_len,
856 857 858 859
					"BOX: %hhu BAY: %hhu %s\n",
					box, bay, active);
			}
		} else if (box != 0 && box != 0xFF) {
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860
			output_len += scnprintf(buf + output_len,
861
				PAGE_SIZE - output_len, "BOX: %hhu %s\n",
862 863
				box, active);
		} else
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864
			output_len += scnprintf(buf + output_len,
865
				PAGE_SIZE - output_len, "%s\n", active);
866 867 868
	}

	spin_unlock_irqrestore(&h->devlock, flags);
869
	return output_len;
870 871
}

872 873 874 875 876 877 878 879 880 881
static ssize_t host_show_ctlr_num(struct device *dev,
	struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);

	h = shost_to_hba(shost);
	return snprintf(buf, 20, "%d\n", h->ctlr);
}

882 883 884 885
static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
886
static DEVICE_ATTR(sas_address, S_IRUGO, sas_address_show, NULL);
887 888
static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
			host_show_hp_ssd_smart_path_enabled, NULL);
889
static DEVICE_ATTR(path_info, S_IRUGO, path_info_show, NULL);
890 891 892
static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH,
		host_show_hp_ssd_smart_path_status,
		host_store_hp_ssd_smart_path_status);
893 894
static DEVICE_ATTR(raid_offload_debug, S_IWUSR, NULL,
			host_store_raid_offload_debug);
895 896 897 898 899 900
static DEVICE_ATTR(firmware_revision, S_IRUGO,
	host_show_firmware_revision, NULL);
static DEVICE_ATTR(commands_outstanding, S_IRUGO,
	host_show_commands_outstanding, NULL);
static DEVICE_ATTR(transport_mode, S_IRUGO,
	host_show_transport_mode, NULL);
901 902
static DEVICE_ATTR(resettable, S_IRUGO,
	host_show_resettable, NULL);
903 904
static DEVICE_ATTR(lockup_detected, S_IRUGO,
	host_show_lockup_detected, NULL);
905 906
static DEVICE_ATTR(ctlr_num, S_IRUGO,
	host_show_ctlr_num, NULL);
907 908 909 910 911

static struct device_attribute *hpsa_sdev_attrs[] = {
	&dev_attr_raid_level,
	&dev_attr_lunid,
	&dev_attr_unique_id,
912
	&dev_attr_hp_ssd_smart_path_enabled,
913
	&dev_attr_path_info,
914
	&dev_attr_sas_address,
915 916 917 918 919 920 921 922
	NULL,
};

static struct device_attribute *hpsa_shost_attrs[] = {
	&dev_attr_rescan,
	&dev_attr_firmware_revision,
	&dev_attr_commands_outstanding,
	&dev_attr_transport_mode,
923
	&dev_attr_resettable,
924
	&dev_attr_hp_ssd_smart_path_status,
925
	&dev_attr_raid_offload_debug,
926
	&dev_attr_lockup_detected,
927
	&dev_attr_ctlr_num,
928 929 930
	NULL,
};

931 932 933
#define HPSA_NRESERVED_CMDS	(HPSA_CMDS_RESERVED_FOR_ABORTS + \
		HPSA_CMDS_RESERVED_FOR_DRIVER + HPSA_MAX_CONCURRENT_PASSTHRUS)

934 935
static struct scsi_host_template hpsa_driver_template = {
	.module			= THIS_MODULE,
936 937
	.name			= HPSA,
	.proc_name		= HPSA,
938 939 940
	.queuecommand		= hpsa_scsi_queue_command,
	.scan_start		= hpsa_scan_start,
	.scan_finished		= hpsa_scan_finished,
D
Don Brace 已提交
941
	.change_queue_depth	= hpsa_change_queue_depth,
942 943
	.this_id		= -1,
	.use_clustering		= ENABLE_CLUSTERING,
944
	.eh_abort_handler	= hpsa_eh_abort_handler,
945 946 947
	.eh_device_reset_handler = hpsa_eh_device_reset_handler,
	.ioctl			= hpsa_ioctl,
	.slave_alloc		= hpsa_slave_alloc,
948
	.slave_configure	= hpsa_slave_configure,
949 950 951 952 953 954
	.slave_destroy		= hpsa_slave_destroy,
#ifdef CONFIG_COMPAT
	.compat_ioctl		= hpsa_compat_ioctl,
#endif
	.sdev_attrs = hpsa_sdev_attrs,
	.shost_attrs = hpsa_shost_attrs,
955
	.max_sectors = 8192,
956
	.no_write_same = 1,
957 958
};

959
static inline u32 next_command(struct ctlr_info *h, u8 q)
960 961
{
	u32 a;
962
	struct reply_queue_buffer *rq = &h->reply_queue[q];
963

964 965 966
	if (h->transMethod & CFGTBL_Trans_io_accel1)
		return h->access.command_completed(h, q);

967
	if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
968
		return h->access.command_completed(h, q);
969

970 971 972
	if ((rq->head[rq->current_entry] & 1) == rq->wraparound) {
		a = rq->head[rq->current_entry];
		rq->current_entry++;
973
		atomic_dec(&h->commands_outstanding);
974 975 976 977
	} else {
		a = FIFO_EMPTY;
	}
	/* Check for wraparound */
978 979 980
	if (rq->current_entry == h->max_commands) {
		rq->current_entry = 0;
		rq->wraparound ^= 1;
981 982 983 984
	}
	return a;
}

985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010
/*
 * There are some special bits in the bus address of the
 * command that we have to set for the controller to know
 * how to process the command:
 *
 * Normal performant mode:
 * bit 0: 1 means performant mode, 0 means simple mode.
 * bits 1-3 = block fetch table entry
 * bits 4-6 = command type (== 0)
 *
 * ioaccel1 mode:
 * bit 0 = "performant mode" bit.
 * bits 1-3 = block fetch table entry
 * bits 4-6 = command type (== 110)
 * (command type is needed because ioaccel1 mode
 * commands are submitted through the same register as normal
 * mode commands, so this is how the controller knows whether
 * the command is normal mode or ioaccel1 mode.)
 *
 * ioaccel2 mode:
 * bit 0 = "performant mode" bit.
 * bits 1-4 = block fetch table entry (note extra bit)
 * bits 4-6 = not needed, because ioaccel2 mode has
 * a separate special register for submitting commands.
 */

1011 1012
/*
 * set_performant_mode: Modify the tag for cciss performant
1013 1014 1015
 * set bit 0 for pull model, bits 3-1 for block fetch
 * register number
 */
1016 1017 1018
#define DEFAULT_REPLY_QUEUE (-1)
static void set_performant_mode(struct ctlr_info *h, struct CommandList *c,
					int reply_queue)
1019
{
1020
	if (likely(h->transMethod & CFGTBL_Trans_Performant)) {
1021
		c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);
1022
		if (unlikely(!h->msix_vectors))
1023 1024
			return;
		if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
1025
			c->Header.ReplyQueue =
1026
				raw_smp_processor_id() % h->nreply_queues;
1027 1028
		else
			c->Header.ReplyQueue = reply_queue % h->nreply_queues;
1029
	}
1030 1031
}

1032
static void set_ioaccel1_performant_mode(struct ctlr_info *h,
1033 1034
						struct CommandList *c,
						int reply_queue)
1035 1036 1037
{
	struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];

1038 1039
	/*
	 * Tell the controller to post the reply to the queue for this
1040 1041
	 * processor.  This seems to give the best I/O throughput.
	 */
1042 1043 1044 1045 1046 1047
	if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
		cp->ReplyQueue = smp_processor_id() % h->nreply_queues;
	else
		cp->ReplyQueue = reply_queue % h->nreply_queues;
	/*
	 * Set the bits in the address sent down to include:
1048 1049 1050 1051 1052 1053 1054 1055
	 *  - performant mode bit (bit 0)
	 *  - pull count (bits 1-3)
	 *  - command type (bits 4-6)
	 */
	c->busaddr |= 1 | (h->ioaccel1_blockFetchTable[c->Header.SGList] << 1) |
					IOACCEL1_BUSADDR_CMDTYPE;
}

1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077
static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h,
						struct CommandList *c,
						int reply_queue)
{
	struct hpsa_tmf_struct *cp = (struct hpsa_tmf_struct *)
		&h->ioaccel2_cmd_pool[c->cmdindex];

	/* Tell the controller to post the reply to the queue for this
	 * processor.  This seems to give the best I/O throughput.
	 */
	if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
		cp->reply_queue = smp_processor_id() % h->nreply_queues;
	else
		cp->reply_queue = reply_queue % h->nreply_queues;
	/* Set the bits in the address sent down to include:
	 *  - performant mode bit not used in ioaccel mode 2
	 *  - pull count (bits 0-3)
	 *  - command type isn't needed for ioaccel2
	 */
	c->busaddr |= h->ioaccel2_blockFetchTable[0];
}

1078
static void set_ioaccel2_performant_mode(struct ctlr_info *h,
1079 1080
						struct CommandList *c,
						int reply_queue)
1081 1082 1083
{
	struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];

1084 1085
	/*
	 * Tell the controller to post the reply to the queue for this
1086 1087
	 * processor.  This seems to give the best I/O throughput.
	 */
1088 1089 1090 1091 1092 1093
	if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
		cp->reply_queue = smp_processor_id() % h->nreply_queues;
	else
		cp->reply_queue = reply_queue % h->nreply_queues;
	/*
	 * Set the bits in the address sent down to include:
1094 1095 1096 1097 1098 1099 1100
	 *  - performant mode bit not used in ioaccel mode 2
	 *  - pull count (bits 0-3)
	 *  - command type isn't needed for ioaccel2
	 */
	c->busaddr |= (h->ioaccel2_blockFetchTable[cp->sg_count]);
}

1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129
static int is_firmware_flash_cmd(u8 *cdb)
{
	return cdb[0] == BMIC_WRITE && cdb[6] == BMIC_FLASH_FIRMWARE;
}

/*
 * During firmware flash, the heartbeat register may not update as frequently
 * as it should.  So we dial down lockup detection during firmware flash. and
 * dial it back up when firmware flash completes.
 */
#define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ)
#define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ)
static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h,
		struct CommandList *c)
{
	if (!is_firmware_flash_cmd(c->Request.CDB))
		return;
	atomic_inc(&h->firmware_flash_in_progress);
	h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH;
}

static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h,
		struct CommandList *c)
{
	if (is_firmware_flash_cmd(c->Request.CDB) &&
		atomic_dec_and_test(&h->firmware_flash_in_progress))
		h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
}

1130 1131
static void __enqueue_cmd_and_start_io(struct ctlr_info *h,
	struct CommandList *c, int reply_queue)
1132
{
1133 1134
	dial_down_lockup_detection_during_fw_flash(h, c);
	atomic_inc(&h->commands_outstanding);
1135 1136
	switch (c->cmd_type) {
	case CMD_IOACCEL1:
1137
		set_ioaccel1_performant_mode(h, c, reply_queue);
1138
		writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
1139 1140
		break;
	case CMD_IOACCEL2:
1141
		set_ioaccel2_performant_mode(h, c, reply_queue);
1142
		writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1143
		break;
1144 1145 1146 1147
	case IOACCEL2_TMF:
		set_ioaccel2_tmf_performant_mode(h, c, reply_queue);
		writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
		break;
1148
	default:
1149
		set_performant_mode(h, c, reply_queue);
1150
		h->access.submit_command(h, c);
1151
	}
1152 1153
}

1154
static void enqueue_cmd_and_start_io(struct ctlr_info *h, struct CommandList *c)
1155
{
W
Webb Scales 已提交
1156
	if (unlikely(hpsa_is_pending_event(c)))
1157 1158
		return finish_cmd(c);

1159 1160 1161
	__enqueue_cmd_and_start_io(h, c, DEFAULT_REPLY_QUEUE);
}

1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175
static inline int is_hba_lunid(unsigned char scsi3addr[])
{
	return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
}

static inline int is_scsi_rev_5(struct ctlr_info *h)
{
	if (!h->hba_inquiry_data)
		return 0;
	if ((h->hba_inquiry_data[2] & 0x07) == 5)
		return 1;
	return 0;
}

1176 1177 1178 1179 1180 1181 1182
static int hpsa_find_target_lun(struct ctlr_info *h,
	unsigned char scsi3addr[], int bus, int *target, int *lun)
{
	/* finds an unused bus, target, lun for a new physical device
	 * assumes h->devlock is held
	 */
	int i, found = 0;
1183
	DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES);
1184

1185
	bitmap_zero(lun_taken, HPSA_MAX_DEVICES);
1186 1187 1188

	for (i = 0; i < h->ndevices; i++) {
		if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
1189
			__set_bit(h->dev[i]->target, lun_taken);
1190 1191
	}

1192 1193 1194 1195 1196 1197
	i = find_first_zero_bit(lun_taken, HPSA_MAX_DEVICES);
	if (i < HPSA_MAX_DEVICES) {
		/* *bus = 1; */
		*target = i;
		*lun = 0;
		found = 1;
1198 1199 1200 1201
	}
	return !found;
}

D
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1202
static void hpsa_show_dev_msg(const char *level, struct ctlr_info *h,
1203 1204
	struct hpsa_scsi_dev_t *dev, char *description)
{
D
Don Brace 已提交
1205 1206 1207
#define LABEL_SIZE 25
	char label[LABEL_SIZE];

1208 1209 1210
	if (h == NULL || h->pdev == NULL || h->scsi_host == NULL)
		return;

D
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1211 1212 1213 1214 1215 1216 1217 1218
	switch (dev->devtype) {
	case TYPE_RAID:
		snprintf(label, LABEL_SIZE, "controller");
		break;
	case TYPE_ENCLOSURE:
		snprintf(label, LABEL_SIZE, "enclosure");
		break;
	case TYPE_DISK:
D
Don Brace 已提交
1219
	case TYPE_ZBC:
D
Don Brace 已提交
1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243
		if (dev->external)
			snprintf(label, LABEL_SIZE, "external");
		else if (!is_logical_dev_addr_mode(dev->scsi3addr))
			snprintf(label, LABEL_SIZE, "%s",
				raid_label[PHYSICAL_DRIVE]);
		else
			snprintf(label, LABEL_SIZE, "RAID-%s",
				dev->raid_level > RAID_UNKNOWN ? "?" :
				raid_label[dev->raid_level]);
		break;
	case TYPE_ROM:
		snprintf(label, LABEL_SIZE, "rom");
		break;
	case TYPE_TAPE:
		snprintf(label, LABEL_SIZE, "tape");
		break;
	case TYPE_MEDIUM_CHANGER:
		snprintf(label, LABEL_SIZE, "changer");
		break;
	default:
		snprintf(label, LABEL_SIZE, "UNKNOWN");
		break;
	}

1244
	dev_printk(level, &h->pdev->dev,
D
Don Brace 已提交
1245
			"scsi %d:%d:%d:%d: %s %s %.8s %.16s %s SSDSmartPathCap%c En%c Exp=%d\n",
1246 1247 1248 1249 1250
			h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
			description,
			scsi_device_type(dev->devtype),
			dev->vendor,
			dev->model,
D
Don Brace 已提交
1251
			label,
1252 1253
			dev->offload_config ? '+' : '-',
			dev->offload_enabled ? '+' : '-',
1254
			dev->expose_device);
1255 1256
}

1257
/* Add an entry into h->dev[] array. */
D
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1258
static int hpsa_scsi_add_entry(struct ctlr_info *h,
1259 1260 1261 1262 1263 1264 1265 1266 1267
		struct hpsa_scsi_dev_t *device,
		struct hpsa_scsi_dev_t *added[], int *nadded)
{
	/* assumes h->devlock is held */
	int n = h->ndevices;
	int i;
	unsigned char addr1[8], addr2[8];
	struct hpsa_scsi_dev_t *sd;

1268
	if (n >= HPSA_MAX_DEVICES) {
1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280
		dev_err(&h->pdev->dev, "too many devices, some will be "
			"inaccessible.\n");
		return -1;
	}

	/* physical devices do not have lun or target assigned until now. */
	if (device->lun != -1)
		/* Logical device, lun is already assigned. */
		goto lun_assigned;

	/* If this device a non-zero lun of a multi-lun device
	 * byte 4 of the 8-byte LUN addr will contain the logical
D
Don Brace 已提交
1281
	 * unit no, zero otherwise.
1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292
	 */
	if (device->scsi3addr[4] == 0) {
		/* This is not a non-zero lun of a multi-lun device */
		if (hpsa_find_target_lun(h, device->scsi3addr,
			device->bus, &device->target, &device->lun) != 0)
			return -1;
		goto lun_assigned;
	}

	/* This is a non-zero lun of a multi-lun device.
	 * Search through our list and find the device which
1293
	 * has the same 8 byte LUN address, excepting byte 4 and 5.
1294 1295 1296 1297 1298
	 * Assign the same bus and target for this new LUN.
	 * Use the logical unit number from the firmware.
	 */
	memcpy(addr1, device->scsi3addr, 8);
	addr1[4] = 0;
1299
	addr1[5] = 0;
1300 1301 1302 1303
	for (i = 0; i < n; i++) {
		sd = h->dev[i];
		memcpy(addr2, sd->scsi3addr, 8);
		addr2[4] = 0;
1304 1305
		addr2[5] = 0;
		/* differ only in byte 4 and 5? */
1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325
		if (memcmp(addr1, addr2, 8) == 0) {
			device->bus = sd->bus;
			device->target = sd->target;
			device->lun = device->scsi3addr[4];
			break;
		}
	}
	if (device->lun == -1) {
		dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
			" suspect firmware bug or unsupported hardware "
			"configuration.\n");
			return -1;
	}

lun_assigned:

	h->dev[n] = device;
	h->ndevices++;
	added[*nadded] = device;
	(*nadded)++;
1326
	hpsa_show_dev_msg(KERN_INFO, h, device,
1327
		device->expose_device ? "added" : "masked");
1328 1329
	device->offload_to_be_enabled = device->offload_enabled;
	device->offload_enabled = 0;
1330 1331 1332
	return 0;
}

1333
/* Update an entry in h->dev[] array. */
D
Don Brace 已提交
1334
static void hpsa_scsi_update_entry(struct ctlr_info *h,
1335 1336
	int entry, struct hpsa_scsi_dev_t *new_entry)
{
1337
	int offload_enabled;
1338 1339 1340 1341 1342
	/* assumes h->devlock is held */
	BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);

	/* Raid level changed. */
	h->dev[entry]->raid_level = new_entry->raid_level;
1343

1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356
	/* Raid offload parameters changed.  Careful about the ordering. */
	if (new_entry->offload_config && new_entry->offload_enabled) {
		/*
		 * if drive is newly offload_enabled, we want to copy the
		 * raid map data first.  If previously offload_enabled and
		 * offload_config were set, raid map data had better be
		 * the same as it was before.  if raid map data is changed
		 * then it had better be the case that
		 * h->dev[entry]->offload_enabled is currently 0.
		 */
		h->dev[entry]->raid_map = new_entry->raid_map;
		h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
	}
1357 1358 1359 1360 1361
	if (new_entry->hba_ioaccel_enabled) {
		h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
		wmb(); /* set ioaccel_handle *before* hba_ioaccel_enabled */
	}
	h->dev[entry]->hba_ioaccel_enabled = new_entry->hba_ioaccel_enabled;
1362
	h->dev[entry]->offload_config = new_entry->offload_config;
1363
	h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror;
1364
	h->dev[entry]->queue_depth = new_entry->queue_depth;
1365

1366 1367 1368 1369 1370 1371 1372 1373 1374
	/*
	 * We can turn off ioaccel offload now, but need to delay turning
	 * it on until we can update h->dev[entry]->phys_disk[], but we
	 * can't do that until all the devices are updated.
	 */
	h->dev[entry]->offload_to_be_enabled = new_entry->offload_enabled;
	if (!new_entry->offload_enabled)
		h->dev[entry]->offload_enabled = 0;

1375 1376
	offload_enabled = h->dev[entry]->offload_enabled;
	h->dev[entry]->offload_enabled = h->dev[entry]->offload_to_be_enabled;
1377
	hpsa_show_dev_msg(KERN_INFO, h, h->dev[entry], "updated");
1378
	h->dev[entry]->offload_enabled = offload_enabled;
1379 1380
}

1381
/* Replace an entry from h->dev[] array. */
D
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1382
static void hpsa_scsi_replace_entry(struct ctlr_info *h,
1383 1384 1385 1386 1387
	int entry, struct hpsa_scsi_dev_t *new_entry,
	struct hpsa_scsi_dev_t *added[], int *nadded,
	struct hpsa_scsi_dev_t *removed[], int *nremoved)
{
	/* assumes h->devlock is held */
1388
	BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1389 1390
	removed[*nremoved] = h->dev[entry];
	(*nremoved)++;
1391 1392 1393 1394 1395 1396 1397 1398 1399 1400

	/*
	 * New physical devices won't have target/lun assigned yet
	 * so we need to preserve the values in the slot we are replacing.
	 */
	if (new_entry->target == -1) {
		new_entry->target = h->dev[entry]->target;
		new_entry->lun = h->dev[entry]->lun;
	}

1401 1402 1403
	h->dev[entry] = new_entry;
	added[*nadded] = new_entry;
	(*nadded)++;
1404
	hpsa_show_dev_msg(KERN_INFO, h, new_entry, "replaced");
1405 1406
	new_entry->offload_to_be_enabled = new_entry->offload_enabled;
	new_entry->offload_enabled = 0;
1407 1408
}

1409
/* Remove an entry from h->dev[] array. */
D
Don Brace 已提交
1410
static void hpsa_scsi_remove_entry(struct ctlr_info *h, int entry,
1411 1412 1413 1414 1415 1416
	struct hpsa_scsi_dev_t *removed[], int *nremoved)
{
	/* assumes h->devlock is held */
	int i;
	struct hpsa_scsi_dev_t *sd;

1417
	BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1418 1419 1420 1421 1422 1423 1424 1425

	sd = h->dev[entry];
	removed[*nremoved] = h->dev[entry];
	(*nremoved)++;

	for (i = entry; i < h->ndevices-1; i++)
		h->dev[i] = h->dev[i+1];
	h->ndevices--;
1426
	hpsa_show_dev_msg(KERN_INFO, h, sd, "removed");
1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484
}

#define SCSI3ADDR_EQ(a, b) ( \
	(a)[7] == (b)[7] && \
	(a)[6] == (b)[6] && \
	(a)[5] == (b)[5] && \
	(a)[4] == (b)[4] && \
	(a)[3] == (b)[3] && \
	(a)[2] == (b)[2] && \
	(a)[1] == (b)[1] && \
	(a)[0] == (b)[0])

static void fixup_botched_add(struct ctlr_info *h,
	struct hpsa_scsi_dev_t *added)
{
	/* called when scsi_add_device fails in order to re-adjust
	 * h->dev[] to match the mid layer's view.
	 */
	unsigned long flags;
	int i, j;

	spin_lock_irqsave(&h->lock, flags);
	for (i = 0; i < h->ndevices; i++) {
		if (h->dev[i] == added) {
			for (j = i; j < h->ndevices-1; j++)
				h->dev[j] = h->dev[j+1];
			h->ndevices--;
			break;
		}
	}
	spin_unlock_irqrestore(&h->lock, flags);
	kfree(added);
}

static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
	struct hpsa_scsi_dev_t *dev2)
{
	/* we compare everything except lun and target as these
	 * are not yet assigned.  Compare parts likely
	 * to differ first
	 */
	if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
		sizeof(dev1->scsi3addr)) != 0)
		return 0;
	if (memcmp(dev1->device_id, dev2->device_id,
		sizeof(dev1->device_id)) != 0)
		return 0;
	if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
		return 0;
	if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
		return 0;
	if (dev1->devtype != dev2->devtype)
		return 0;
	if (dev1->bus != dev2->bus)
		return 0;
	return 1;
}

1485 1486 1487 1488 1489 1490 1491 1492 1493
static inline int device_updated(struct hpsa_scsi_dev_t *dev1,
	struct hpsa_scsi_dev_t *dev2)
{
	/* Device attributes that can change, but don't mean
	 * that the device is a different device, nor that the OS
	 * needs to be told anything about the change.
	 */
	if (dev1->raid_level != dev2->raid_level)
		return 1;
1494 1495 1496 1497
	if (dev1->offload_config != dev2->offload_config)
		return 1;
	if (dev1->offload_enabled != dev2->offload_enabled)
		return 1;
D
Don Brace 已提交
1498 1499 1500
	if (!is_logical_dev_addr_mode(dev1->scsi3addr))
		if (dev1->queue_depth != dev2->queue_depth)
			return 1;
1501 1502 1503
	return 0;
}

1504 1505 1506
/* Find needle in haystack.  If exact match found, return DEVICE_SAME,
 * and return needle location in *index.  If scsi3addr matches, but not
 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
1507 1508 1509 1510
 * location in *index.
 * In the case of a minor device attribute change, such as RAID level, just
 * return DEVICE_UPDATED, along with the updated device's location in index.
 * If needle not found, return DEVICE_NOT_FOUND.
1511 1512 1513 1514 1515 1516 1517 1518 1519
 */
static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
	struct hpsa_scsi_dev_t *haystack[], int haystack_size,
	int *index)
{
	int i;
#define DEVICE_NOT_FOUND 0
#define DEVICE_CHANGED 1
#define DEVICE_SAME 2
1520
#define DEVICE_UPDATED 3
D
Don Brace 已提交
1521 1522 1523
	if (needle == NULL)
		return DEVICE_NOT_FOUND;

1524
	for (i = 0; i < haystack_size; i++) {
1525 1526
		if (haystack[i] == NULL) /* previously removed. */
			continue;
1527 1528
		if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
			*index = i;
1529 1530 1531
			if (device_is_the_same(needle, haystack[i])) {
				if (device_updated(needle, haystack[i]))
					return DEVICE_UPDATED;
1532
				return DEVICE_SAME;
1533
			} else {
1534 1535 1536
				/* Keep offline devices offline */
				if (needle->volume_offline)
					return DEVICE_NOT_FOUND;
1537
				return DEVICE_CHANGED;
1538
			}
1539 1540 1541 1542 1543 1544
		}
	}
	*index = -1;
	return DEVICE_NOT_FOUND;
}

1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563
static void hpsa_monitor_offline_device(struct ctlr_info *h,
					unsigned char scsi3addr[])
{
	struct offline_device_entry *device;
	unsigned long flags;

	/* Check to see if device is already on the list */
	spin_lock_irqsave(&h->offline_device_lock, flags);
	list_for_each_entry(device, &h->offline_device_list, offline_list) {
		if (memcmp(device->scsi3addr, scsi3addr,
			sizeof(device->scsi3addr)) == 0) {
			spin_unlock_irqrestore(&h->offline_device_lock, flags);
			return;
		}
	}
	spin_unlock_irqrestore(&h->offline_device_lock, flags);

	/* Device is not on the list, add it. */
	device = kmalloc(sizeof(*device), GFP_KERNEL);
1564
	if (!device)
1565
		return;
1566

1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590
	memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
	spin_lock_irqsave(&h->offline_device_lock, flags);
	list_add_tail(&device->offline_list, &h->offline_device_list);
	spin_unlock_irqrestore(&h->offline_device_lock, flags);
}

/* Print a message explaining various offline volume states */
static void hpsa_show_volume_status(struct ctlr_info *h,
	struct hpsa_scsi_dev_t *sd)
{
	if (sd->volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED)
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume status is not available through vital product data pages.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
	switch (sd->volume_offline) {
	case HPSA_LV_OK:
		break;
	case HPSA_LV_UNDERGOING_ERASE:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is undergoing background erase process.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
S
Scott Benesh 已提交
1591 1592 1593 1594 1595 1596
	case HPSA_LV_NOT_AVAILABLE:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is waiting for transforming volume.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
1597 1598
	case HPSA_LV_UNDERGOING_RPI:
		dev_info(&h->pdev->dev,
S
Scott Benesh 已提交
1599
			"C%d:B%d:T%d:L%d Volume is undergoing rapid parity init.\n",
1600 1601 1602 1603 1604
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	case HPSA_LV_PENDING_RPI:
		dev_info(&h->pdev->dev,
S
Scott Benesh 已提交
1605 1606 1607
			"C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653
		break;
	case HPSA_LV_ENCRYPTED_NO_KEY:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because key is not present.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is not encrypted and cannot be accessed because controller is in encryption-only mode.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	case HPSA_LV_UNDERGOING_ENCRYPTION:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is undergoing encryption process.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is undergoing encryption re-keying process.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because controller does not have encryption enabled.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	case HPSA_LV_PENDING_ENCRYPTION:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is pending migration to encrypted state, but process has not started.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	case HPSA_LV_PENDING_ENCRYPTION_REKEYING:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is encrypted and is pending encryption rekeying.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	}
}

1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676
/*
 * Figure the list of physical drive pointers for a logical drive with
 * raid offload configured.
 */
static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h,
				struct hpsa_scsi_dev_t *dev[], int ndevices,
				struct hpsa_scsi_dev_t *logical_drive)
{
	struct raid_map_data *map = &logical_drive->raid_map;
	struct raid_map_disk_data *dd = &map->data[0];
	int i, j;
	int total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
				le16_to_cpu(map->metadata_disks_per_row);
	int nraid_map_entries = le16_to_cpu(map->row_cnt) *
				le16_to_cpu(map->layout_map_count) *
				total_disks_per_row;
	int nphys_disk = le16_to_cpu(map->layout_map_count) *
				total_disks_per_row;
	int qdepth;

	if (nraid_map_entries > RAID_MAP_MAX_ENTRIES)
		nraid_map_entries = RAID_MAP_MAX_ENTRIES;

W
Webb Scales 已提交
1677 1678
	logical_drive->nphysical_disks = nraid_map_entries;

1679 1680 1681 1682 1683 1684
	qdepth = 0;
	for (i = 0; i < nraid_map_entries; i++) {
		logical_drive->phys_disk[i] = NULL;
		if (!logical_drive->offload_config)
			continue;
		for (j = 0; j < ndevices; j++) {
D
Don Brace 已提交
1685 1686
			if (dev[j] == NULL)
				continue;
1687 1688
			if (dev[j]->devtype != TYPE_DISK &&
			    dev[j]->devtype != TYPE_ZBC)
D
Don Brace 已提交
1689
				continue;
1690
			if (is_logical_device(dev[j]))
1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710
				continue;
			if (dev[j]->ioaccel_handle != dd[i].ioaccel_handle)
				continue;

			logical_drive->phys_disk[i] = dev[j];
			if (i < nphys_disk)
				qdepth = min(h->nr_cmds, qdepth +
				    logical_drive->phys_disk[i]->queue_depth);
			break;
		}

		/*
		 * This can happen if a physical drive is removed and
		 * the logical drive is degraded.  In that case, the RAID
		 * map data will refer to a physical disk which isn't actually
		 * present.  And in that case offload_enabled should already
		 * be 0, but we'll turn it off here just in case
		 */
		if (!logical_drive->phys_disk[i]) {
			logical_drive->offload_enabled = 0;
1711 1712
			logical_drive->offload_to_be_enabled = 0;
			logical_drive->queue_depth = 8;
1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730
		}
	}
	if (nraid_map_entries)
		/*
		 * This is correct for reads, too high for full stripe writes,
		 * way too high for partial stripe writes
		 */
		logical_drive->queue_depth = qdepth;
	else
		logical_drive->queue_depth = h->nr_cmds;
}

static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h,
				struct hpsa_scsi_dev_t *dev[], int ndevices)
{
	int i;

	for (i = 0; i < ndevices; i++) {
D
Don Brace 已提交
1731 1732
		if (dev[i] == NULL)
			continue;
1733 1734
		if (dev[i]->devtype != TYPE_DISK &&
		    dev[i]->devtype != TYPE_ZBC)
D
Don Brace 已提交
1735
			continue;
1736
		if (!is_logical_device(dev[i]))
1737
			continue;
1738 1739 1740 1741 1742 1743 1744 1745 1746 1747

		/*
		 * If offload is currently enabled, the RAID map and
		 * phys_disk[] assignment *better* not be changing
		 * and since it isn't changing, we do not need to
		 * update it.
		 */
		if (dev[i]->offload_enabled)
			continue;

1748 1749 1750 1751
		hpsa_figure_phys_disk_ptrs(h, dev, ndevices, dev[i]);
	}
}

1752 1753 1754 1755 1756 1757 1758
static int hpsa_add_device(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
{
	int rc = 0;

	if (!h->scsi_host)
		return 1;

K
Kevin Barnett 已提交
1759 1760
	if (is_logical_device(device)) /* RAID */
		rc = scsi_add_device(h->scsi_host, device->bus,
1761
					device->target, device->lun);
K
Kevin Barnett 已提交
1762 1763 1764
	else /* HBA */
		rc = hpsa_add_sas_device(h->sas_host, device);

1765 1766 1767
	return rc;
}

1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812
static int hpsa_find_outstanding_commands_for_dev(struct ctlr_info *h,
						struct hpsa_scsi_dev_t *dev)
{
	int i;
	int count = 0;

	for (i = 0; i < h->nr_cmds; i++) {
		struct CommandList *c = h->cmd_pool + i;
		int refcount = atomic_inc_return(&c->refcount);

		if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev,
				dev->scsi3addr)) {
			unsigned long flags;

			spin_lock_irqsave(&h->lock, flags);	/* Implied MB */
			if (!hpsa_is_cmd_idle(c))
				++count;
			spin_unlock_irqrestore(&h->lock, flags);
		}

		cmd_free(h, c);
	}

	return count;
}

static void hpsa_wait_for_outstanding_commands_for_dev(struct ctlr_info *h,
						struct hpsa_scsi_dev_t *device)
{
	int cmds = 0;
	int waits = 0;

	while (1) {
		cmds = hpsa_find_outstanding_commands_for_dev(h, device);
		if (cmds == 0)
			break;
		if (++waits > 20)
			break;
		dev_warn(&h->pdev->dev,
			"%s: removing device with %d outstanding commands!\n",
			__func__, cmds);
		msleep(1000);
	}
}

1813 1814 1815 1816 1817 1818 1819 1820
static void hpsa_remove_device(struct ctlr_info *h,
			struct hpsa_scsi_dev_t *device)
{
	struct scsi_device *sdev = NULL;

	if (!h->scsi_host)
		return;

K
Kevin Barnett 已提交
1821 1822
	if (is_logical_device(device)) { /* RAID */
		sdev = scsi_device_lookup(h->scsi_host, device->bus,
1823
						device->target, device->lun);
K
Kevin Barnett 已提交
1824 1825 1826 1827 1828 1829 1830 1831 1832 1833
		if (sdev) {
			scsi_remove_device(sdev);
			scsi_device_put(sdev);
		} else {
			/*
			 * We don't expect to get here.  Future commands
			 * to this device will get a selection timeout as
			 * if the device were gone.
			 */
			hpsa_show_dev_msg(KERN_WARNING, h, device,
1834
					"didn't find device for removal.");
K
Kevin Barnett 已提交
1835
		}
1836 1837 1838 1839 1840
	} else { /* HBA */

		device->removed = 1;
		hpsa_wait_for_outstanding_commands_for_dev(h, device);

K
Kevin Barnett 已提交
1841
		hpsa_remove_sas_device(device);
1842
	}
1843 1844
}

D
Don Brace 已提交
1845
static void adjust_hpsa_scsi_table(struct ctlr_info *h,
1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857
	struct hpsa_scsi_dev_t *sd[], int nsds)
{
	/* sd contains scsi3 addresses and devtypes, and inquiry
	 * data.  This function takes what's in sd to be the current
	 * reality and updates h->dev[] to reflect that reality.
	 */
	int i, entry, device_change, changes = 0;
	struct hpsa_scsi_dev_t *csd;
	unsigned long flags;
	struct hpsa_scsi_dev_t **added, **removed;
	int nadded, nremoved;

D
Don Brace 已提交
1858 1859 1860 1861
	/*
	 * A reset can cause a device status to change
	 * re-schedule the scan to see what happened.
	 */
D
Don Brace 已提交
1862
	spin_lock_irqsave(&h->reset_lock, flags);
D
Don Brace 已提交
1863 1864
	if (h->reset_in_progress) {
		h->drv_req_rescan = 1;
D
Don Brace 已提交
1865
		spin_unlock_irqrestore(&h->reset_lock, flags);
D
Don Brace 已提交
1866 1867
		return;
	}
D
Don Brace 已提交
1868
	spin_unlock_irqrestore(&h->reset_lock, flags);
1869

1870 1871
	added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL);
	removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL);
1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884

	if (!added || !removed) {
		dev_warn(&h->pdev->dev, "out of memory in "
			"adjust_hpsa_scsi_table\n");
		goto free_and_out;
	}

	spin_lock_irqsave(&h->devlock, flags);

	/* find any devices in h->dev[] that are not in
	 * sd[] and remove them from h->dev[], and for any
	 * devices which have changed, remove the old device
	 * info and add the new device info.
1885 1886
	 * If minor device attributes change, just update
	 * the existing device structure.
1887 1888 1889 1890 1891 1892 1893 1894 1895
	 */
	i = 0;
	nremoved = 0;
	nadded = 0;
	while (i < h->ndevices) {
		csd = h->dev[i];
		device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
		if (device_change == DEVICE_NOT_FOUND) {
			changes++;
D
Don Brace 已提交
1896
			hpsa_scsi_remove_entry(h, i, removed, &nremoved);
1897 1898 1899
			continue; /* remove ^^^, hence i not incremented */
		} else if (device_change == DEVICE_CHANGED) {
			changes++;
D
Don Brace 已提交
1900
			hpsa_scsi_replace_entry(h, i, sd[entry],
1901
				added, &nadded, removed, &nremoved);
1902 1903 1904 1905
			/* Set it to NULL to prevent it from being freed
			 * at the bottom of hpsa_update_scsi_devices()
			 */
			sd[entry] = NULL;
1906
		} else if (device_change == DEVICE_UPDATED) {
D
Don Brace 已提交
1907
			hpsa_scsi_update_entry(h, i, sd[entry]);
1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918
		}
		i++;
	}

	/* Now, make sure every device listed in sd[] is also
	 * listed in h->dev[], adding them if they aren't found
	 */

	for (i = 0; i < nsds; i++) {
		if (!sd[i]) /* if already added above. */
			continue;
1919 1920 1921 1922 1923 1924 1925 1926

		/* Don't add devices which are NOT READY, FORMAT IN PROGRESS
		 * as the SCSI mid-layer does not handle such devices well.
		 * It relentlessly loops sending TUR at 3Hz, then READ(10)
		 * at 160Hz, and prevents the system from coming up.
		 */
		if (sd[i]->volume_offline) {
			hpsa_show_volume_status(h, sd[i]);
1927
			hpsa_show_dev_msg(KERN_INFO, h, sd[i], "offline");
1928 1929 1930
			continue;
		}

1931 1932 1933 1934
		device_change = hpsa_scsi_find_entry(sd[i], h->dev,
					h->ndevices, &entry);
		if (device_change == DEVICE_NOT_FOUND) {
			changes++;
D
Don Brace 已提交
1935
			if (hpsa_scsi_add_entry(h, sd[i], added, &nadded) != 0)
1936 1937 1938 1939 1940 1941 1942 1943 1944 1945
				break;
			sd[i] = NULL; /* prevent from being freed later. */
		} else if (device_change == DEVICE_CHANGED) {
			/* should never happen... */
			changes++;
			dev_warn(&h->pdev->dev,
				"device unexpectedly changed.\n");
			/* but if it does happen, we just ignore that device */
		}
	}
1946 1947 1948 1949 1950
	hpsa_update_log_drive_phys_drive_ptrs(h, h->dev, h->ndevices);

	/* Now that h->dev[]->phys_disk[] is coherent, we can enable
	 * any logical drives that need it enabled.
	 */
D
Don Brace 已提交
1951 1952 1953
	for (i = 0; i < h->ndevices; i++) {
		if (h->dev[i] == NULL)
			continue;
1954
		h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled;
D
Don Brace 已提交
1955
	}
1956

1957 1958
	spin_unlock_irqrestore(&h->devlock, flags);

1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969
	/* Monitor devices which are in one of several NOT READY states to be
	 * brought online later. This must be done without holding h->devlock,
	 * so don't touch h->dev[]
	 */
	for (i = 0; i < nsds; i++) {
		if (!sd[i]) /* if already added above. */
			continue;
		if (sd[i]->volume_offline)
			hpsa_monitor_offline_device(h, sd[i]->scsi3addr);
	}

1970 1971 1972 1973
	/* Don't notify scsi mid layer of any changes the first time through
	 * (or if there are no changes) scsi_scan_host will do it later the
	 * first time through.
	 */
D
Don Brace 已提交
1974
	if (!changes)
1975 1976 1977 1978
		goto free_and_out;

	/* Notify scsi mid layer of any removed devices */
	for (i = 0; i < nremoved; i++) {
D
Don Brace 已提交
1979 1980
		if (removed[i] == NULL)
			continue;
1981 1982
		if (removed[i]->expose_device)
			hpsa_remove_device(h, removed[i]);
1983 1984 1985 1986 1987 1988
		kfree(removed[i]);
		removed[i] = NULL;
	}

	/* Notify scsi mid layer of any added devices */
	for (i = 0; i < nadded; i++) {
1989 1990
		int rc = 0;

D
Don Brace 已提交
1991 1992
		if (added[i] == NULL)
			continue;
1993
		if (!(added[i]->expose_device))
1994
			continue;
1995 1996
		rc = hpsa_add_device(h, added[i]);
		if (!rc)
1997
			continue;
1998 1999
		dev_warn(&h->pdev->dev,
			"addition failed %d, device not added.", rc);
2000 2001 2002 2003
		/* now we have to remove it from h->dev,
		 * since it didn't get added to scsi mid layer
		 */
		fixup_botched_add(h, added[i]);
D
Don Brace 已提交
2004
		h->drv_req_rescan = 1;
2005 2006 2007 2008 2009 2010 2011 2012
	}

free_and_out:
	kfree(added);
	kfree(removed);
}

/*
2013
 * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t *
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031
 * Assume's h->devlock is held.
 */
static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
	int bus, int target, int lun)
{
	int i;
	struct hpsa_scsi_dev_t *sd;

	for (i = 0; i < h->ndevices; i++) {
		sd = h->dev[i];
		if (sd->bus == bus && sd->target == target && sd->lun == lun)
			return sd;
	}
	return NULL;
}

static int hpsa_slave_alloc(struct scsi_device *sdev)
{
2032
	struct hpsa_scsi_dev_t *sd = NULL;
2033 2034 2035 2036 2037
	unsigned long flags;
	struct ctlr_info *h;

	h = sdev_to_hba(sdev);
	spin_lock_irqsave(&h->devlock, flags);
K
Kevin Barnett 已提交
2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048
	if (sdev_channel(sdev) == HPSA_PHYSICAL_DEVICE_BUS) {
		struct scsi_target *starget;
		struct sas_rphy *rphy;

		starget = scsi_target(sdev);
		rphy = target_to_rphy(starget);
		sd = hpsa_find_device_by_sas_rphy(h, rphy);
		if (sd) {
			sd->target = sdev_id(sdev);
			sd->lun = sdev->lun;
		}
2049 2050
	}
	if (!sd)
K
Kevin Barnett 已提交
2051 2052 2053 2054
		sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
					sdev_id(sdev), sdev->lun);

	if (sd && sd->expose_device) {
2055
		atomic_set(&sd->ioaccel_cmds_out, 0);
K
Kevin Barnett 已提交
2056
		sdev->hostdata = sd;
2057 2058
	} else
		sdev->hostdata = NULL;
2059 2060 2061 2062
	spin_unlock_irqrestore(&h->devlock, flags);
	return 0;
}

2063 2064 2065 2066 2067 2068 2069
/* configure scsi device based on internal per-device structure */
static int hpsa_slave_configure(struct scsi_device *sdev)
{
	struct hpsa_scsi_dev_t *sd;
	int queue_depth;

	sd = sdev->hostdata;
2070
	sdev->no_uld_attach = !sd || !sd->expose_device;
2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082

	if (sd)
		queue_depth = sd->queue_depth != 0 ?
			sd->queue_depth : sdev->host->can_queue;
	else
		queue_depth = sdev->host->can_queue;

	scsi_change_queue_depth(sdev, queue_depth);

	return 0;
}

2083 2084
static void hpsa_slave_destroy(struct scsi_device *sdev)
{
2085
	/* nothing to do. */
2086 2087
}

2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127
static void hpsa_free_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
{
	int i;

	if (!h->ioaccel2_cmd_sg_list)
		return;
	for (i = 0; i < h->nr_cmds; i++) {
		kfree(h->ioaccel2_cmd_sg_list[i]);
		h->ioaccel2_cmd_sg_list[i] = NULL;
	}
	kfree(h->ioaccel2_cmd_sg_list);
	h->ioaccel2_cmd_sg_list = NULL;
}

static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
{
	int i;

	if (h->chainsize <= 0)
		return 0;

	h->ioaccel2_cmd_sg_list =
		kzalloc(sizeof(*h->ioaccel2_cmd_sg_list) * h->nr_cmds,
					GFP_KERNEL);
	if (!h->ioaccel2_cmd_sg_list)
		return -ENOMEM;
	for (i = 0; i < h->nr_cmds; i++) {
		h->ioaccel2_cmd_sg_list[i] =
			kmalloc(sizeof(*h->ioaccel2_cmd_sg_list[i]) *
					h->maxsgentries, GFP_KERNEL);
		if (!h->ioaccel2_cmd_sg_list[i])
			goto clean;
	}
	return 0;

clean:
	hpsa_free_ioaccel2_sg_chain_blocks(h);
	return -ENOMEM;
}

2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141
static void hpsa_free_sg_chain_blocks(struct ctlr_info *h)
{
	int i;

	if (!h->cmd_sg_list)
		return;
	for (i = 0; i < h->nr_cmds; i++) {
		kfree(h->cmd_sg_list[i]);
		h->cmd_sg_list[i] = NULL;
	}
	kfree(h->cmd_sg_list);
	h->cmd_sg_list = NULL;
}

R
Robert Elliott 已提交
2142
static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h)
2143 2144 2145 2146 2147 2148 2149 2150
{
	int i;

	if (h->chainsize <= 0)
		return 0;

	h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds,
				GFP_KERNEL);
2151
	if (!h->cmd_sg_list)
2152
		return -ENOMEM;
2153

2154 2155 2156
	for (i = 0; i < h->nr_cmds; i++) {
		h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) *
						h->chainsize, GFP_KERNEL);
2157
		if (!h->cmd_sg_list[i])
2158
			goto clean;
2159

2160 2161 2162 2163 2164 2165 2166 2167
	}
	return 0;

clean:
	hpsa_free_sg_chain_blocks(h);
	return -ENOMEM;
}

2168 2169 2170 2171 2172 2173 2174 2175
static int hpsa_map_ioaccel2_sg_chain_block(struct ctlr_info *h,
	struct io_accel2_cmd *cp, struct CommandList *c)
{
	struct ioaccel2_sg_element *chain_block;
	u64 temp64;
	u32 chain_size;

	chain_block = h->ioaccel2_cmd_sg_list[c->cmdindex];
D
Don Brace 已提交
2176
	chain_size = le32_to_cpu(cp->sg[0].length);
2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196
	temp64 = pci_map_single(h->pdev, chain_block, chain_size,
				PCI_DMA_TODEVICE);
	if (dma_mapping_error(&h->pdev->dev, temp64)) {
		/* prevent subsequent unmapping */
		cp->sg->address = 0;
		return -1;
	}
	cp->sg->address = cpu_to_le64(temp64);
	return 0;
}

static void hpsa_unmap_ioaccel2_sg_chain_block(struct ctlr_info *h,
	struct io_accel2_cmd *cp)
{
	struct ioaccel2_sg_element *chain_sg;
	u64 temp64;
	u32 chain_size;

	chain_sg = cp->sg;
	temp64 = le64_to_cpu(chain_sg->address);
D
Don Brace 已提交
2197
	chain_size = le32_to_cpu(cp->sg[0].length);
2198 2199 2200
	pci_unmap_single(h->pdev, temp64, chain_size, PCI_DMA_TODEVICE);
}

2201
static int hpsa_map_sg_chain_block(struct ctlr_info *h,
2202 2203 2204 2205
	struct CommandList *c)
{
	struct SGDescriptor *chain_sg, *chain_block;
	u64 temp64;
2206
	u32 chain_len;
2207 2208 2209

	chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
	chain_block = h->cmd_sg_list[c->cmdindex];
2210 2211
	chain_sg->Ext = cpu_to_le32(HPSA_SG_CHAIN);
	chain_len = sizeof(*chain_sg) *
D
Don Brace 已提交
2212
		(le16_to_cpu(c->Header.SGTotal) - h->max_cmd_sg_entries);
2213 2214
	chain_sg->Len = cpu_to_le32(chain_len);
	temp64 = pci_map_single(h->pdev, chain_block, chain_len,
2215
				PCI_DMA_TODEVICE);
2216 2217
	if (dma_mapping_error(&h->pdev->dev, temp64)) {
		/* prevent subsequent unmapping */
2218
		chain_sg->Addr = cpu_to_le64(0);
2219 2220
		return -1;
	}
2221
	chain_sg->Addr = cpu_to_le64(temp64);
2222
	return 0;
2223 2224 2225 2226 2227 2228 2229
}

static void hpsa_unmap_sg_chain_block(struct ctlr_info *h,
	struct CommandList *c)
{
	struct SGDescriptor *chain_sg;

2230
	if (le16_to_cpu(c->Header.SGTotal) <= h->max_cmd_sg_entries)
2231 2232 2233
		return;

	chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2234 2235
	pci_unmap_single(h->pdev, le64_to_cpu(chain_sg->Addr),
			le32_to_cpu(chain_sg->Len), PCI_DMA_TODEVICE);
2236 2237
}

2238 2239 2240 2241 2242 2243

/* Decode the various types of errors on ioaccel2 path.
 * Return 1 for any error that should generate a RAID path retry.
 * Return 0 for errors that don't require a RAID path retry.
 */
static int handle_ioaccel_mode2_error(struct ctlr_info *h,
2244 2245
					struct CommandList *c,
					struct scsi_cmnd *cmd,
2246 2247
					struct io_accel2_cmd *c2,
					struct hpsa_scsi_dev_t *dev)
2248 2249
{
	int data_len;
2250
	int retry = 0;
2251
	u32 ioaccel2_resid = 0;
2252 2253 2254 2255 2256 2257 2258

	switch (c2->error_data.serv_response) {
	case IOACCEL2_SERV_RESPONSE_COMPLETE:
		switch (c2->error_data.status) {
		case IOACCEL2_STATUS_SR_TASK_COMP_GOOD:
			break;
		case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND:
2259
			cmd->result |= SAM_STAT_CHECK_CONDITION;
2260
			if (c2->error_data.data_present !=
2261 2262 2263
					IOACCEL2_SENSE_DATA_PRESENT) {
				memset(cmd->sense_buffer, 0,
					SCSI_SENSE_BUFFERSIZE);
2264
				break;
2265
			}
2266 2267 2268 2269 2270 2271 2272 2273 2274
			/* copy the sense data */
			data_len = c2->error_data.sense_data_len;
			if (data_len > SCSI_SENSE_BUFFERSIZE)
				data_len = SCSI_SENSE_BUFFERSIZE;
			if (data_len > sizeof(c2->error_data.sense_data_buff))
				data_len =
					sizeof(c2->error_data.sense_data_buff);
			memcpy(cmd->sense_buffer,
				c2->error_data.sense_data_buff, data_len);
2275
			retry = 1;
2276 2277
			break;
		case IOACCEL2_STATUS_SR_TASK_COMP_BUSY:
2278
			retry = 1;
2279 2280
			break;
		case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON:
2281
			retry = 1;
2282 2283
			break;
		case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL:
2284
			retry = 1;
2285 2286
			break;
		case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED:
2287
			retry = 1;
2288 2289
			break;
		default:
2290
			retry = 1;
2291 2292 2293 2294
			break;
		}
		break;
	case IOACCEL2_SERV_RESPONSE_FAILURE:
2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310
		switch (c2->error_data.status) {
		case IOACCEL2_STATUS_SR_IO_ERROR:
		case IOACCEL2_STATUS_SR_IO_ABORTED:
		case IOACCEL2_STATUS_SR_OVERRUN:
			retry = 1;
			break;
		case IOACCEL2_STATUS_SR_UNDERRUN:
			cmd->result = (DID_OK << 16);		/* host byte */
			cmd->result |= (COMMAND_COMPLETE << 8);	/* msg byte */
			ioaccel2_resid = get_unaligned_le32(
						&c2->error_data.resid_cnt[0]);
			scsi_set_resid(cmd, ioaccel2_resid);
			break;
		case IOACCEL2_STATUS_SR_NO_PATH_TO_DEVICE:
		case IOACCEL2_STATUS_SR_INVALID_DEVICE:
		case IOACCEL2_STATUS_SR_IOACCEL_DISABLED:
2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331
			/*
			 * Did an HBA disk disappear? We will eventually
			 * get a state change event from the controller but
			 * in the meantime, we need to tell the OS that the
			 * HBA disk is no longer there and stop I/O
			 * from going down. This allows the potential re-insert
			 * of the disk to get the same device node.
			 */
			if (dev->physical_device && dev->expose_device) {
				cmd->result = DID_NO_CONNECT << 16;
				dev->removed = 1;
				h->drv_req_rescan = 1;
				dev_warn(&h->pdev->dev,
					"%s: device is gone!\n", __func__);
			} else
				/*
				 * Retry by sending down the RAID path.
				 * We will get an event from ctlr to
				 * trigger rescan regardless.
				 */
				retry = 1;
2332 2333 2334 2335
			break;
		default:
			retry = 1;
		}
2336 2337 2338 2339 2340 2341
		break;
	case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
		break;
	case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
		break;
	case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
2342
		retry = 1;
2343 2344 2345 2346
		break;
	case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
		break;
	default:
2347
		retry = 1;
2348 2349
		break;
	}
2350 2351

	return retry;	/* retry on raid path? */
2352 2353
}

2354 2355 2356
static void hpsa_cmd_resolve_events(struct ctlr_info *h,
		struct CommandList *c)
{
W
Webb Scales 已提交
2357 2358
	bool do_wake = false;

2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369
	/*
	 * Prevent the following race in the abort handler:
	 *
	 * 1. LLD is requested to abort a SCSI command
	 * 2. The SCSI command completes
	 * 3. The struct CommandList associated with step 2 is made available
	 * 4. New I/O request to LLD to another LUN re-uses struct CommandList
	 * 5. Abort handler follows scsi_cmnd->host_scribble and
	 *    finds struct CommandList and tries to aborts it
	 * Now we have aborted the wrong command.
	 *
W
Webb Scales 已提交
2370 2371
	 * Reset c->scsi_cmd here so that the abort or reset handler will know
	 * this command has completed.  Then, check to see if the handler is
2372 2373 2374
	 * waiting for this command, and, if so, wake it.
	 */
	c->scsi_cmd = SCSI_CMD_IDLE;
W
Webb Scales 已提交
2375
	mb();	/* Declare command idle before checking for pending events. */
2376
	if (c->abort_pending) {
W
Webb Scales 已提交
2377
		do_wake = true;
2378 2379
		c->abort_pending = false;
	}
W
Webb Scales 已提交
2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398
	if (c->reset_pending) {
		unsigned long flags;
		struct hpsa_scsi_dev_t *dev;

		/*
		 * There appears to be a reset pending; lock the lock and
		 * reconfirm.  If so, then decrement the count of outstanding
		 * commands and wake the reset command if this is the last one.
		 */
		spin_lock_irqsave(&h->lock, flags);
		dev = c->reset_pending;		/* Re-fetch under the lock. */
		if (dev && atomic_dec_and_test(&dev->reset_cmds_out))
			do_wake = true;
		c->reset_pending = NULL;
		spin_unlock_irqrestore(&h->lock, flags);
	}

	if (do_wake)
		wake_up_all(&h->event_sync_wait_queue);
2399 2400
}

2401 2402 2403 2404 2405 2406 2407
static void hpsa_cmd_resolve_and_free(struct ctlr_info *h,
				      struct CommandList *c)
{
	hpsa_cmd_resolve_events(h, c);
	cmd_tagged_free(h, c);
}

2408 2409 2410
static void hpsa_cmd_free_and_done(struct ctlr_info *h,
		struct CommandList *c, struct scsi_cmnd *cmd)
{
2411
	hpsa_cmd_resolve_and_free(h, c);
2412 2413
	if (cmd && cmd->scsi_done)
		cmd->scsi_done(cmd);
2414 2415 2416 2417 2418 2419 2420 2421
}

static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c)
{
	INIT_WORK(&c->work, hpsa_command_resubmit_worker);
	queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work);
}

2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432
static void hpsa_set_scsi_cmd_aborted(struct scsi_cmnd *cmd)
{
	cmd->result = DID_ABORT << 16;
}

static void hpsa_cmd_abort_and_free(struct ctlr_info *h, struct CommandList *c,
				    struct scsi_cmnd *cmd)
{
	hpsa_set_scsi_cmd_aborted(cmd);
	dev_warn(&h->pdev->dev, "CDB %16phN was aborted with status 0x%x\n",
			 c->Request.CDB, c->err_info->ScsiStatus);
2433
	hpsa_cmd_resolve_and_free(h, c);
2434 2435
}

2436 2437 2438 2439 2440 2441 2442 2443
static void process_ioaccel2_completion(struct ctlr_info *h,
		struct CommandList *c, struct scsi_cmnd *cmd,
		struct hpsa_scsi_dev_t *dev)
{
	struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];

	/* check for good status */
	if (likely(c2->error_data.serv_response == 0 &&
2444 2445
			c2->error_data.status == 0))
		return hpsa_cmd_free_and_done(h, c, cmd);
2446

2447 2448
	/*
	 * Any RAID offload error results in retry which will use
2449 2450 2451
	 * the normal I/O path so the controller can handle whatever's
	 * wrong.
	 */
2452
	if (is_logical_device(dev) &&
2453 2454
		c2->error_data.serv_response ==
			IOACCEL2_SERV_RESPONSE_FAILURE) {
2455
		if (c2->error_data.status ==
2456
			IOACCEL2_STATUS_SR_IOACCEL_DISABLED) {
2457
			dev->offload_enabled = 0;
2458 2459
			dev->offload_to_be_enabled = 0;
		}
2460 2461

		return hpsa_retry_cmd(h, c);
2462
	}
2463

2464
	if (handle_ioaccel_mode2_error(h, c, cmd, c2, dev))
2465
		return hpsa_retry_cmd(h, c);
2466

2467
	return hpsa_cmd_free_and_done(h, c, cmd);
2468 2469
}

2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497
/* Returns 0 on success, < 0 otherwise. */
static int hpsa_evaluate_tmf_status(struct ctlr_info *h,
					struct CommandList *cp)
{
	u8 tmf_status = cp->err_info->ScsiStatus;

	switch (tmf_status) {
	case CISS_TMF_COMPLETE:
		/*
		 * CISS_TMF_COMPLETE never happens, instead,
		 * ei->CommandStatus == 0 for this case.
		 */
	case CISS_TMF_SUCCESS:
		return 0;
	case CISS_TMF_INVALID_FRAME:
	case CISS_TMF_NOT_SUPPORTED:
	case CISS_TMF_FAILED:
	case CISS_TMF_WRONG_LUN:
	case CISS_TMF_OVERLAPPED_TAG:
		break;
	default:
		dev_warn(&h->pdev->dev, "Unknown TMF status: 0x%02x\n",
				tmf_status);
		break;
	}
	return -tmf_status;
}

2498
static void complete_scsi_command(struct CommandList *cp)
2499 2500 2501 2502
{
	struct scsi_cmnd *cmd;
	struct ctlr_info *h;
	struct ErrorInfo *ei;
2503
	struct hpsa_scsi_dev_t *dev;
2504
	struct io_accel2_cmd *c2;
2505

2506 2507 2508
	u8 sense_key;
	u8 asc;      /* additional sense code */
	u8 ascq;     /* additional sense code qualifier */
2509
	unsigned long sense_data_size;
2510 2511

	ei = cp->err_info;
2512
	cmd = cp->scsi_cmd;
2513
	h = cp->h;
2514 2515 2516 2517 2518 2519

	if (!cmd->device) {
		cmd->result = DID_NO_CONNECT << 16;
		return hpsa_cmd_free_and_done(h, cp, cmd);
	}

2520
	dev = cmd->device->hostdata;
2521 2522 2523 2524
	if (!dev) {
		cmd->result = DID_NO_CONNECT << 16;
		return hpsa_cmd_free_and_done(h, cp, cmd);
	}
2525
	c2 = &h->ioaccel2_cmd_pool[cp->cmdindex];
2526 2527

	scsi_dma_unmap(cmd); /* undo the DMA mappings */
2528
	if ((cp->cmd_type == CMD_SCSI) &&
D
Don Brace 已提交
2529
		(le16_to_cpu(cp->Header.SGTotal) > h->max_cmd_sg_entries))
2530
		hpsa_unmap_sg_chain_block(h, cp);
2531

2532 2533 2534 2535
	if ((cp->cmd_type == CMD_IOACCEL2) &&
		(c2->sg[0].chain_indicator == IOACCEL2_CHAIN))
		hpsa_unmap_ioaccel2_sg_chain_block(h, c2);

2536 2537
	cmd->result = (DID_OK << 16); 		/* host byte */
	cmd->result |= (COMMAND_COMPLETE << 8);	/* msg byte */
2538

2539 2540 2541 2542 2543 2544 2545 2546 2547
	if (cp->cmd_type == CMD_IOACCEL2 || cp->cmd_type == CMD_IOACCEL1) {
		if (dev->physical_device && dev->expose_device &&
			dev->removed) {
			cmd->result = DID_NO_CONNECT << 16;
			return hpsa_cmd_free_and_done(h, cp, cmd);
		}
		if (likely(cp->phys_disk != NULL))
			atomic_dec(&cp->phys_disk->ioaccel_cmds_out);
	}
2548

2549 2550 2551 2552 2553 2554 2555 2556
	/*
	 * We check for lockup status here as it may be set for
	 * CMD_SCSI, CMD_IOACCEL1 and CMD_IOACCEL2 commands by
	 * fail_all_oustanding_cmds()
	 */
	if (unlikely(ei->CommandStatus == CMD_CTLR_LOCKUP)) {
		/* DID_NO_CONNECT will prevent a retry */
		cmd->result = DID_NO_CONNECT << 16;
2557
		return hpsa_cmd_free_and_done(h, cp, cmd);
2558 2559
	}

W
Webb Scales 已提交
2560 2561
	if ((unlikely(hpsa_is_pending_event(cp)))) {
		if (cp->reset_pending)
D
Don Brace 已提交
2562
			return hpsa_cmd_free_and_done(h, cp, cmd);
W
Webb Scales 已提交
2563 2564 2565 2566
		if (cp->abort_pending)
			return hpsa_cmd_abort_and_free(h, cp, cmd);
	}

2567 2568 2569
	if (cp->cmd_type == CMD_IOACCEL2)
		return process_ioaccel2_completion(h, cp, cmd, dev);

2570
	scsi_set_resid(cmd, ei->ResidualCnt);
2571 2572
	if (ei->CommandStatus == 0)
		return hpsa_cmd_free_and_done(h, cp, cmd);
2573

2574 2575 2576 2577 2578
	/* For I/O accelerator commands, copy over some fields to the normal
	 * CISS header used below for error handling.
	 */
	if (cp->cmd_type == CMD_IOACCEL1) {
		struct io_accel1_cmd *c = &h->ioaccel_cmd_pool[cp->cmdindex];
D
Don Brace 已提交
2579 2580 2581 2582
		cp->Header.SGList = scsi_sg_count(cmd);
		cp->Header.SGTotal = cpu_to_le16(cp->Header.SGList);
		cp->Request.CDBLen = le16_to_cpu(c->io_flags) &
			IOACCEL1_IOFLAGS_CDBLEN_MASK;
2583
		cp->Header.tag = c->tag;
2584 2585
		memcpy(cp->Header.LUN.LunAddrBytes, c->CISS_LUN, 8);
		memcpy(cp->Request.CDB, c->CDB, cp->Request.CDBLen);
2586 2587 2588 2589 2590

		/* Any RAID offload error results in retry which will use
		 * the normal I/O path so the controller can handle whatever's
		 * wrong.
		 */
2591
		if (is_logical_device(dev)) {
2592 2593
			if (ei->CommandStatus == CMD_IOACCEL_DISABLED)
				dev->offload_enabled = 0;
W
Webb Scales 已提交
2594
			return hpsa_retry_cmd(h, cp);
2595
		}
2596 2597
	}

2598 2599 2600 2601
	/* an error has occurred */
	switch (ei->CommandStatus) {

	case CMD_TARGET_STATUS:
2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613
		cmd->result |= ei->ScsiStatus;
		/* copy the sense data */
		if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo))
			sense_data_size = SCSI_SENSE_BUFFERSIZE;
		else
			sense_data_size = sizeof(ei->SenseInfo);
		if (ei->SenseLen < sense_data_size)
			sense_data_size = ei->SenseLen;
		memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size);
		if (ei->ScsiStatus)
			decode_sense_data(ei->SenseInfo, sense_data_size,
				&sense_key, &asc, &ascq);
2614
		if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
2615
			if (sense_key == ABORTED_COMMAND) {
2616
				cmd->result |= DID_SOFT_ERROR << 16;
2617 2618
				break;
			}
2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653
			break;
		}
		/* Problem was not a check condition
		 * Pass it up to the upper layers...
		 */
		if (ei->ScsiStatus) {
			dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
				"Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
				"Returning result: 0x%x\n",
				cp, ei->ScsiStatus,
				sense_key, asc, ascq,
				cmd->result);
		} else {  /* scsi status is zero??? How??? */
			dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
				"Returning no connection.\n", cp),

			/* Ordinarily, this case should never happen,
			 * but there is a bug in some released firmware
			 * revisions that allows it to happen if, for
			 * example, a 4100 backplane loses power and
			 * the tape drive is in it.  We assume that
			 * it's a fatal error of some kind because we
			 * can't show that it wasn't. We will make it
			 * look like selection timeout since that is
			 * the most common reason for this to occur,
			 * and it's severe enough.
			 */

			cmd->result = DID_NO_CONNECT << 16;
		}
		break;

	case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
		break;
	case CMD_DATA_OVERRUN:
2654 2655
		dev_warn(&h->pdev->dev,
			"CDB %16phN data overrun\n", cp->Request.CDB);
2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669
		break;
	case CMD_INVALID: {
		/* print_bytes(cp, sizeof(*cp), 1, 0);
		print_cmd(cp); */
		/* We get CMD_INVALID if you address a non-existent device
		 * instead of a selection timeout (no response).  You will
		 * see this if you yank out a drive, then try to access it.
		 * This is kind of a shame because it means that any other
		 * CMD_INVALID (e.g. driver bug) will get interpreted as a
		 * missing target. */
		cmd->result = DID_NO_CONNECT << 16;
	}
		break;
	case CMD_PROTOCOL_ERR:
2670
		cmd->result = DID_ERROR << 16;
2671 2672
		dev_warn(&h->pdev->dev, "CDB %16phN : protocol error\n",
				cp->Request.CDB);
2673 2674 2675
		break;
	case CMD_HARDWARE_ERR:
		cmd->result = DID_ERROR << 16;
2676 2677
		dev_warn(&h->pdev->dev, "CDB %16phN : hardware error\n",
			cp->Request.CDB);
2678 2679 2680
		break;
	case CMD_CONNECTION_LOST:
		cmd->result = DID_ERROR << 16;
2681 2682
		dev_warn(&h->pdev->dev, "CDB %16phN : connection lost\n",
			cp->Request.CDB);
2683 2684
		break;
	case CMD_ABORTED:
2685 2686
		/* Return now to avoid calling scsi_done(). */
		return hpsa_cmd_abort_and_free(h, cp, cmd);
2687 2688
	case CMD_ABORT_FAILED:
		cmd->result = DID_ERROR << 16;
2689 2690
		dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n",
			cp->Request.CDB);
2691 2692
		break;
	case CMD_UNSOLICITED_ABORT:
2693
		cmd->result = DID_SOFT_ERROR << 16; /* retry the command */
2694 2695
		dev_warn(&h->pdev->dev, "CDB %16phN : unsolicited abort\n",
			cp->Request.CDB);
2696 2697 2698
		break;
	case CMD_TIMEOUT:
		cmd->result = DID_TIME_OUT << 16;
2699 2700
		dev_warn(&h->pdev->dev, "CDB %16phN timed out\n",
			cp->Request.CDB);
2701
		break;
2702 2703 2704 2705
	case CMD_UNABORTABLE:
		cmd->result = DID_ERROR << 16;
		dev_warn(&h->pdev->dev, "Command unabortable\n");
		break;
2706 2707 2708 2709
	case CMD_TMF_STATUS:
		if (hpsa_evaluate_tmf_status(h, cp)) /* TMF failed? */
			cmd->result = DID_ERROR << 16;
		break;
2710 2711 2712 2713 2714 2715 2716 2717
	case CMD_IOACCEL_DISABLED:
		/* This only handles the direct pass-through case since RAID
		 * offload is handled above.  Just attempt a retry.
		 */
		cmd->result = DID_SOFT_ERROR << 16;
		dev_warn(&h->pdev->dev,
				"cp %p had HP SSD Smart Path error\n", cp);
		break;
2718 2719 2720 2721 2722
	default:
		cmd->result = DID_ERROR << 16;
		dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
				cp, ei->CommandStatus);
	}
2723 2724

	return hpsa_cmd_free_and_done(h, cp, cmd);
2725 2726 2727 2728 2729 2730 2731
}

static void hpsa_pci_unmap(struct pci_dev *pdev,
	struct CommandList *c, int sg_used, int data_direction)
{
	int i;

2732 2733 2734 2735
	for (i = 0; i < sg_used; i++)
		pci_unmap_single(pdev, (dma_addr_t) le64_to_cpu(c->SG[i].Addr),
				le32_to_cpu(c->SG[i].Len),
				data_direction);
2736 2737
}

2738
static int hpsa_map_one(struct pci_dev *pdev,
2739 2740 2741 2742 2743
		struct CommandList *cp,
		unsigned char *buf,
		size_t buflen,
		int data_direction)
{
2744
	u64 addr64;
2745 2746 2747

	if (buflen == 0 || data_direction == PCI_DMA_NONE) {
		cp->Header.SGList = 0;
2748
		cp->Header.SGTotal = cpu_to_le16(0);
2749
		return 0;
2750 2751
	}

2752
	addr64 = pci_map_single(pdev, buf, buflen, data_direction);
2753
	if (dma_mapping_error(&pdev->dev, addr64)) {
2754
		/* Prevent subsequent unmap of something never mapped */
2755
		cp->Header.SGList = 0;
2756
		cp->Header.SGTotal = cpu_to_le16(0);
2757
		return -1;
2758
	}
2759 2760 2761 2762 2763
	cp->SG[0].Addr = cpu_to_le64(addr64);
	cp->SG[0].Len = cpu_to_le32(buflen);
	cp->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* we are not chaining */
	cp->Header.SGList = 1;   /* no. SGs contig in this cmd */
	cp->Header.SGTotal = cpu_to_le16(1); /* total sgs in cmd list */
2764
	return 0;
2765 2766
}

2767 2768 2769 2770
#define NO_TIMEOUT ((unsigned long) -1)
#define DEFAULT_TIMEOUT 30000 /* milliseconds */
static int hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
	struct CommandList *c, int reply_queue, unsigned long timeout_msecs)
2771 2772 2773 2774
{
	DECLARE_COMPLETION_ONSTACK(wait);

	c->waiting = &wait;
2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796
	__enqueue_cmd_and_start_io(h, c, reply_queue);
	if (timeout_msecs == NO_TIMEOUT) {
		/* TODO: get rid of this no-timeout thing */
		wait_for_completion_io(&wait);
		return IO_OK;
	}
	if (!wait_for_completion_io_timeout(&wait,
					msecs_to_jiffies(timeout_msecs))) {
		dev_warn(&h->pdev->dev, "Command timed out.\n");
		return -ETIMEDOUT;
	}
	return IO_OK;
}

static int hpsa_scsi_do_simple_cmd(struct ctlr_info *h, struct CommandList *c,
				   int reply_queue, unsigned long timeout_msecs)
{
	if (unlikely(lockup_detected(h))) {
		c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
		return IO_OK;
	}
	return hpsa_scsi_do_simple_cmd_core(h, c, reply_queue, timeout_msecs);
2797 2798
}

2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810
static u32 lockup_detected(struct ctlr_info *h)
{
	int cpu;
	u32 rc, *lockup_detected;

	cpu = get_cpu();
	lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
	rc = *lockup_detected;
	put_cpu();
	return rc;
}

2811
#define MAX_DRIVER_CMD_RETRIES 25
2812 2813
static int hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
	struct CommandList *c, int data_direction, unsigned long timeout_msecs)
2814
{
2815
	int backoff_time = 10, retry_count = 0;
2816
	int rc;
2817 2818

	do {
2819
		memset(c->err_info, 0, sizeof(*c->err_info));
2820 2821 2822 2823
		rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
						  timeout_msecs);
		if (rc)
			break;
2824
		retry_count++;
2825 2826 2827 2828 2829
		if (retry_count > 3) {
			msleep(backoff_time);
			if (backoff_time < 1000)
				backoff_time *= 2;
		}
2830
	} while ((check_for_unit_attention(h, c) ||
2831 2832
			check_for_busy(h, c)) &&
			retry_count <= MAX_DRIVER_CMD_RETRIES);
2833
	hpsa_pci_unmap(h->pdev, c, 1, data_direction);
2834 2835 2836
	if (retry_count > MAX_DRIVER_CMD_RETRIES)
		rc = -EIO;
	return rc;
2837 2838
}

2839 2840
static void hpsa_print_cmd(struct ctlr_info *h, char *txt,
				struct CommandList *c)
2841
{
2842 2843 2844
	const u8 *cdb = c->Request.CDB;
	const u8 *lun = c->Header.LUN.LunAddrBytes;

2845 2846
	dev_warn(&h->pdev->dev, "%s: LUN:%8phN CDB:%16phN\n",
		 txt, lun, cdb);
2847 2848 2849 2850 2851 2852
}

static void hpsa_scsi_interpret_error(struct ctlr_info *h,
			struct CommandList *cp)
{
	const struct ErrorInfo *ei = cp->err_info;
2853
	struct device *d = &cp->h->pdev->dev;
2854 2855
	u8 sense_key, asc, ascq;
	int sense_len;
2856 2857 2858

	switch (ei->CommandStatus) {
	case CMD_TARGET_STATUS:
2859 2860 2861 2862 2863 2864
		if (ei->SenseLen > sizeof(ei->SenseInfo))
			sense_len = sizeof(ei->SenseInfo);
		else
			sense_len = ei->SenseLen;
		decode_sense_data(ei->SenseInfo, sense_len,
					&sense_key, &asc, &ascq);
2865 2866
		hpsa_print_cmd(h, "SCSI status", cp);
		if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION)
2867 2868
			dev_warn(d, "SCSI Status = 02, Sense key = 0x%02x, ASC = 0x%02x, ASCQ = 0x%02x\n",
				sense_key, asc, ascq);
2869
		else
2870
			dev_warn(d, "SCSI Status = 0x%02x\n", ei->ScsiStatus);
2871 2872 2873 2874 2875 2876 2877 2878 2879
		if (ei->ScsiStatus == 0)
			dev_warn(d, "SCSI status is abnormally zero.  "
			"(probably indicates selection timeout "
			"reported incorrectly due to a known "
			"firmware bug, circa July, 2001.)\n");
		break;
	case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
		break;
	case CMD_DATA_OVERRUN:
2880
		hpsa_print_cmd(h, "overrun condition", cp);
2881 2882 2883 2884 2885
		break;
	case CMD_INVALID: {
		/* controller unfortunately reports SCSI passthru's
		 * to non-existent targets as invalid commands.
		 */
2886 2887
		hpsa_print_cmd(h, "invalid command", cp);
		dev_warn(d, "probably means device no longer present\n");
2888 2889 2890
		}
		break;
	case CMD_PROTOCOL_ERR:
2891
		hpsa_print_cmd(h, "protocol error", cp);
2892 2893
		break;
	case CMD_HARDWARE_ERR:
2894
		hpsa_print_cmd(h, "hardware error", cp);
2895 2896
		break;
	case CMD_CONNECTION_LOST:
2897
		hpsa_print_cmd(h, "connection lost", cp);
2898 2899
		break;
	case CMD_ABORTED:
2900
		hpsa_print_cmd(h, "aborted", cp);
2901 2902
		break;
	case CMD_ABORT_FAILED:
2903
		hpsa_print_cmd(h, "abort failed", cp);
2904 2905
		break;
	case CMD_UNSOLICITED_ABORT:
2906
		hpsa_print_cmd(h, "unsolicited abort", cp);
2907 2908
		break;
	case CMD_TIMEOUT:
2909
		hpsa_print_cmd(h, "timed out", cp);
2910
		break;
2911
	case CMD_UNABORTABLE:
2912
		hpsa_print_cmd(h, "unabortable", cp);
2913
		break;
2914 2915 2916
	case CMD_CTLR_LOCKUP:
		hpsa_print_cmd(h, "controller lockup detected", cp);
		break;
2917
	default:
2918 2919
		hpsa_print_cmd(h, "unknown status", cp);
		dev_warn(d, "Unknown command status %x\n",
2920 2921 2922 2923 2924
				ei->CommandStatus);
	}
}

static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
2925
			u16 page, unsigned char *buf,
2926 2927 2928 2929 2930 2931
			unsigned char bufsize)
{
	int rc = IO_OK;
	struct CommandList *c;
	struct ErrorInfo *ei;

2932
	c = cmd_alloc(h);
2933

2934 2935 2936 2937 2938
	if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize,
			page, scsi3addr, TYPE_CMD)) {
		rc = -1;
		goto out;
	}
2939
	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
2940
					PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
2941 2942
	if (rc)
		goto out;
2943 2944
	ei = c->err_info;
	if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
2945
		hpsa_scsi_interpret_error(h, c);
2946 2947
		rc = -1;
	}
2948
out:
2949
	cmd_free(h, c);
2950 2951 2952
	return rc;
}

2953
static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr,
2954
	u8 reset_type, int reply_queue)
2955 2956 2957 2958 2959
{
	int rc = IO_OK;
	struct CommandList *c;
	struct ErrorInfo *ei;

2960
	c = cmd_alloc(h);
2961 2962


2963
	/* fill_cmd can't fail here, no data buffer to map. */
S
Scott Teel 已提交
2964
	(void) fill_cmd(c, reset_type, h, NULL, 0, 0,
2965
			scsi3addr, TYPE_MSG);
2966
	rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
2967 2968 2969 2970
	if (rc) {
		dev_warn(&h->pdev->dev, "Failed to send reset command\n");
		goto out;
	}
2971 2972 2973 2974
	/* no unmap needed here because no data xfer. */

	ei = c->err_info;
	if (ei->CommandStatus != 0) {
2975
		hpsa_scsi_interpret_error(h, c);
2976 2977
		rc = -1;
	}
2978
out:
2979
	cmd_free(h, c);
2980 2981 2982
	return rc;
}

W
Webb Scales 已提交
2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087
static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
			       struct hpsa_scsi_dev_t *dev,
			       unsigned char *scsi3addr)
{
	int i;
	bool match = false;
	struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
	struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;

	if (hpsa_is_cmd_idle(c))
		return false;

	switch (c->cmd_type) {
	case CMD_SCSI:
	case CMD_IOCTL_PEND:
		match = !memcmp(scsi3addr, &c->Header.LUN.LunAddrBytes,
				sizeof(c->Header.LUN.LunAddrBytes));
		break;

	case CMD_IOACCEL1:
	case CMD_IOACCEL2:
		if (c->phys_disk == dev) {
			/* HBA mode match */
			match = true;
		} else {
			/* Possible RAID mode -- check each phys dev. */
			/* FIXME:  Do we need to take out a lock here?  If
			 * so, we could just call hpsa_get_pdisk_of_ioaccel2()
			 * instead. */
			for (i = 0; i < dev->nphysical_disks && !match; i++) {
				/* FIXME: an alternate test might be
				 *
				 * match = dev->phys_disk[i]->ioaccel_handle
				 *              == c2->scsi_nexus;      */
				match = dev->phys_disk[i] == c->phys_disk;
			}
		}
		break;

	case IOACCEL2_TMF:
		for (i = 0; i < dev->nphysical_disks && !match; i++) {
			match = dev->phys_disk[i]->ioaccel_handle ==
					le32_to_cpu(ac->it_nexus);
		}
		break;

	case 0:		/* The command is in the middle of being initialized. */
		match = false;
		break;

	default:
		dev_err(&h->pdev->dev, "unexpected cmd_type: %d\n",
			c->cmd_type);
		BUG();
	}

	return match;
}

static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev,
	unsigned char *scsi3addr, u8 reset_type, int reply_queue)
{
	int i;
	int rc = 0;

	/* We can really only handle one reset at a time */
	if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) {
		dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n");
		return -EINTR;
	}

	BUG_ON(atomic_read(&dev->reset_cmds_out) != 0);

	for (i = 0; i < h->nr_cmds; i++) {
		struct CommandList *c = h->cmd_pool + i;
		int refcount = atomic_inc_return(&c->refcount);

		if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev, scsi3addr)) {
			unsigned long flags;

			/*
			 * Mark the target command as having a reset pending,
			 * then lock a lock so that the command cannot complete
			 * while we're considering it.  If the command is not
			 * idle then count it; otherwise revoke the event.
			 */
			c->reset_pending = dev;
			spin_lock_irqsave(&h->lock, flags);	/* Implied MB */
			if (!hpsa_is_cmd_idle(c))
				atomic_inc(&dev->reset_cmds_out);
			else
				c->reset_pending = NULL;
			spin_unlock_irqrestore(&h->lock, flags);
		}

		cmd_free(h, c);
	}

	rc = hpsa_send_reset(h, scsi3addr, reset_type, reply_queue);
	if (!rc)
		wait_event(h->event_sync_wait_queue,
			atomic_read(&dev->reset_cmds_out) == 0 ||
			lockup_detected(h));

	if (unlikely(lockup_detected(h))) {
D
Don Brace 已提交
3088 3089 3090 3091
		dev_warn(&h->pdev->dev,
			 "Controller lockup detected during reset wait\n");
		rc = -ENODEV;
	}
W
Webb Scales 已提交
3092 3093 3094

	if (unlikely(rc))
		atomic_set(&dev->reset_cmds_out, 0);
D
Don Brace 已提交
3095
	else
D
Don Brace 已提交
3096
		rc = wait_for_device_to_become_ready(h, scsi3addr, 0);
W
Webb Scales 已提交
3097 3098 3099 3100 3101

	mutex_unlock(&h->reset_mutex);
	return rc;
}

3102 3103 3104 3105 3106 3107 3108 3109 3110 3111
static void hpsa_get_raid_level(struct ctlr_info *h,
	unsigned char *scsi3addr, unsigned char *raid_level)
{
	int rc;
	unsigned char *buf;

	*raid_level = RAID_UNKNOWN;
	buf = kzalloc(64, GFP_KERNEL);
	if (!buf)
		return;
3112 3113 3114 3115 3116 3117 3118 3119

	if (!hpsa_vpd_page_supported(h, scsi3addr,
		HPSA_VPD_LV_DEVICE_GEOMETRY))
		goto exit;

	rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE |
		HPSA_VPD_LV_DEVICE_GEOMETRY, buf, 64);

3120 3121 3122 3123
	if (rc == 0)
		*raid_level = buf[8];
	if (*raid_level > RAID_UNKNOWN)
		*raid_level = RAID_UNKNOWN;
3124
exit:
3125 3126 3127 3128
	kfree(buf);
	return;
}

3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140
#define HPSA_MAP_DEBUG
#ifdef HPSA_MAP_DEBUG
static void hpsa_debug_map_buff(struct ctlr_info *h, int rc,
				struct raid_map_data *map_buff)
{
	struct raid_map_disk_data *dd = &map_buff->data[0];
	int map, row, col;
	u16 map_cnt, row_cnt, disks_per_row;

	if (rc != 0)
		return;

3141 3142 3143 3144
	/* Show details only if debugging has been activated. */
	if (h->raid_offload_debug < 2)
		return;

3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168
	dev_info(&h->pdev->dev, "structure_size = %u\n",
				le32_to_cpu(map_buff->structure_size));
	dev_info(&h->pdev->dev, "volume_blk_size = %u\n",
			le32_to_cpu(map_buff->volume_blk_size));
	dev_info(&h->pdev->dev, "volume_blk_cnt = 0x%llx\n",
			le64_to_cpu(map_buff->volume_blk_cnt));
	dev_info(&h->pdev->dev, "physicalBlockShift = %u\n",
			map_buff->phys_blk_shift);
	dev_info(&h->pdev->dev, "parity_rotation_shift = %u\n",
			map_buff->parity_rotation_shift);
	dev_info(&h->pdev->dev, "strip_size = %u\n",
			le16_to_cpu(map_buff->strip_size));
	dev_info(&h->pdev->dev, "disk_starting_blk = 0x%llx\n",
			le64_to_cpu(map_buff->disk_starting_blk));
	dev_info(&h->pdev->dev, "disk_blk_cnt = 0x%llx\n",
			le64_to_cpu(map_buff->disk_blk_cnt));
	dev_info(&h->pdev->dev, "data_disks_per_row = %u\n",
			le16_to_cpu(map_buff->data_disks_per_row));
	dev_info(&h->pdev->dev, "metadata_disks_per_row = %u\n",
			le16_to_cpu(map_buff->metadata_disks_per_row));
	dev_info(&h->pdev->dev, "row_cnt = %u\n",
			le16_to_cpu(map_buff->row_cnt));
	dev_info(&h->pdev->dev, "layout_map_count = %u\n",
			le16_to_cpu(map_buff->layout_map_count));
D
Don Brace 已提交
3169
	dev_info(&h->pdev->dev, "flags = 0x%x\n",
3170
			le16_to_cpu(map_buff->flags));
D
Don Brace 已提交
3171 3172 3173
	dev_info(&h->pdev->dev, "encrypytion = %s\n",
			le16_to_cpu(map_buff->flags) &
			RAID_MAP_FLAG_ENCRYPT_ON ?  "ON" : "OFF");
3174 3175
	dev_info(&h->pdev->dev, "dekindex = %u\n",
			le16_to_cpu(map_buff->dekindex));
3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213
	map_cnt = le16_to_cpu(map_buff->layout_map_count);
	for (map = 0; map < map_cnt; map++) {
		dev_info(&h->pdev->dev, "Map%u:\n", map);
		row_cnt = le16_to_cpu(map_buff->row_cnt);
		for (row = 0; row < row_cnt; row++) {
			dev_info(&h->pdev->dev, "  Row%u:\n", row);
			disks_per_row =
				le16_to_cpu(map_buff->data_disks_per_row);
			for (col = 0; col < disks_per_row; col++, dd++)
				dev_info(&h->pdev->dev,
					"    D%02u: h=0x%04x xor=%u,%u\n",
					col, dd->ioaccel_handle,
					dd->xor_mult[0], dd->xor_mult[1]);
			disks_per_row =
				le16_to_cpu(map_buff->metadata_disks_per_row);
			for (col = 0; col < disks_per_row; col++, dd++)
				dev_info(&h->pdev->dev,
					"    M%02u: h=0x%04x xor=%u,%u\n",
					col, dd->ioaccel_handle,
					dd->xor_mult[0], dd->xor_mult[1]);
		}
	}
}
#else
static void hpsa_debug_map_buff(__attribute__((unused)) struct ctlr_info *h,
			__attribute__((unused)) int rc,
			__attribute__((unused)) struct raid_map_data *map_buff)
{
}
#endif

static int hpsa_get_raid_map(struct ctlr_info *h,
	unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
{
	int rc = 0;
	struct CommandList *c;
	struct ErrorInfo *ei;

3214
	c = cmd_alloc(h);
3215

3216 3217 3218
	if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map,
			sizeof(this_device->raid_map), 0,
			scsi3addr, TYPE_CMD)) {
3219 3220 3221
		dev_warn(&h->pdev->dev, "hpsa_get_raid_map fill_cmd failed\n");
		cmd_free(h, c);
		return -1;
3222
	}
3223
	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3224
					PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
3225 3226
	if (rc)
		goto out;
3227 3228
	ei = c->err_info;
	if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3229
		hpsa_scsi_interpret_error(h, c);
3230 3231
		rc = -1;
		goto out;
3232
	}
3233
	cmd_free(h, c);
3234 3235 3236 3237 3238 3239 3240 3241 3242

	/* @todo in the future, dynamically allocate RAID map memory */
	if (le32_to_cpu(this_device->raid_map.structure_size) >
				sizeof(this_device->raid_map)) {
		dev_warn(&h->pdev->dev, "RAID map size is too large!\n");
		rc = -1;
	}
	hpsa_debug_map_buff(h, rc, &this_device->raid_map);
	return rc;
3243 3244 3245
out:
	cmd_free(h, c);
	return rc;
3246 3247
}

K
Kevin Barnett 已提交
3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266
static int hpsa_bmic_sense_subsystem_information(struct ctlr_info *h,
		unsigned char scsi3addr[], u16 bmic_device_index,
		struct bmic_sense_subsystem_info *buf, size_t bufsize)
{
	int rc = IO_OK;
	struct CommandList *c;
	struct ErrorInfo *ei;

	c = cmd_alloc(h);

	rc = fill_cmd(c, BMIC_SENSE_SUBSYSTEM_INFORMATION, h, buf, bufsize,
		0, RAID_CTLR_LUNID, TYPE_CMD);
	if (rc)
		goto out;

	c->Request.CDB[2] = bmic_device_index & 0xff;
	c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;

	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3267
				PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
K
Kevin Barnett 已提交
3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279
	if (rc)
		goto out;
	ei = c->err_info;
	if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
		hpsa_scsi_interpret_error(h, c);
		rc = -1;
	}
out:
	cmd_free(h, c);
	return rc;
}

S
Scott Teel 已提交
3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294
static int hpsa_bmic_id_controller(struct ctlr_info *h,
	struct bmic_identify_controller *buf, size_t bufsize)
{
	int rc = IO_OK;
	struct CommandList *c;
	struct ErrorInfo *ei;

	c = cmd_alloc(h);

	rc = fill_cmd(c, BMIC_IDENTIFY_CONTROLLER, h, buf, bufsize,
		0, RAID_CTLR_LUNID, TYPE_CMD);
	if (rc)
		goto out;

	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3295
		PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
S
Scott Teel 已提交
3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307
	if (rc)
		goto out;
	ei = c->err_info;
	if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
		hpsa_scsi_interpret_error(h, c);
		rc = -1;
	}
out:
	cmd_free(h, c);
	return rc;
}

3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324
static int hpsa_bmic_id_physical_device(struct ctlr_info *h,
		unsigned char scsi3addr[], u16 bmic_device_index,
		struct bmic_identify_physical_device *buf, size_t bufsize)
{
	int rc = IO_OK;
	struct CommandList *c;
	struct ErrorInfo *ei;

	c = cmd_alloc(h);
	rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize,
		0, RAID_CTLR_LUNID, TYPE_CMD);
	if (rc)
		goto out;

	c->Request.CDB[2] = bmic_device_index & 0xff;
	c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;

3325
	hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE,
3326
						DEFAULT_TIMEOUT);
3327 3328 3329 3330 3331 3332 3333
	ei = c->err_info;
	if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
		hpsa_scsi_interpret_error(h, c);
		rc = -1;
	}
out:
	cmd_free(h, c);
K
Kevin Barnett 已提交
3334

3335 3336 3337
	return rc;
}

3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358
/*
 * get enclosure information
 * struct ReportExtendedLUNdata *rlep - Used for BMIC drive number
 * struct hpsa_scsi_dev_t *encl_dev - device entry for enclosure
 * Uses id_physical_device to determine the box_index.
 */
static void hpsa_get_enclosure_info(struct ctlr_info *h,
			unsigned char *scsi3addr,
			struct ReportExtendedLUNdata *rlep, int rle_index,
			struct hpsa_scsi_dev_t *encl_dev)
{
	int rc = -1;
	struct CommandList *c = NULL;
	struct ErrorInfo *ei = NULL;
	struct bmic_sense_storage_box_params *bssbp = NULL;
	struct bmic_identify_physical_device *id_phys = NULL;
	struct ext_report_lun_entry *rle = &rlep->LUN[rle_index];
	u16 bmic_device_index = 0;

	bmic_device_index = GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]);

3359 3360 3361 3362 3363
	if (encl_dev->target == -1 || encl_dev->lun == -1) {
		rc = IO_OK;
		goto out;
	}

3364 3365
	if (bmic_device_index == 0xFF00 || MASKED_DEVICE(&rle->lunid[0])) {
		rc = IO_OK;
3366
		goto out;
3367
	}
3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398

	bssbp = kzalloc(sizeof(*bssbp), GFP_KERNEL);
	if (!bssbp)
		goto out;

	id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
	if (!id_phys)
		goto out;

	rc = hpsa_bmic_id_physical_device(h, scsi3addr, bmic_device_index,
						id_phys, sizeof(*id_phys));
	if (rc) {
		dev_warn(&h->pdev->dev, "%s: id_phys failed %d bdi[0x%x]\n",
			__func__, encl_dev->external, bmic_device_index);
		goto out;
	}

	c = cmd_alloc(h);

	rc = fill_cmd(c, BMIC_SENSE_STORAGE_BOX_PARAMS, h, bssbp,
			sizeof(*bssbp), 0, RAID_CTLR_LUNID, TYPE_CMD);

	if (rc)
		goto out;

	if (id_phys->phys_connector[1] == 'E')
		c->Request.CDB[5] = id_phys->box_index;
	else
		c->Request.CDB[5] = 0;

	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE,
3399
						DEFAULT_TIMEOUT);
3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425
	if (rc)
		goto out;

	ei = c->err_info;
	if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
		rc = -1;
		goto out;
	}

	encl_dev->box[id_phys->active_path_number] = bssbp->phys_box_on_port;
	memcpy(&encl_dev->phys_connector[id_phys->active_path_number],
		bssbp->phys_connector, sizeof(bssbp->phys_connector));

	rc = IO_OK;
out:
	kfree(bssbp);
	kfree(id_phys);

	if (c)
		cmd_free(h, c);

	if (rc != IO_OK)
		hpsa_show_dev_msg(KERN_INFO, h, encl_dev,
			"Error, could not get enclosure information\n");
}

K
Kevin Barnett 已提交
3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465
static u64 hpsa_get_sas_address_from_report_physical(struct ctlr_info *h,
						unsigned char *scsi3addr)
{
	struct ReportExtendedLUNdata *physdev;
	u32 nphysicals;
	u64 sa = 0;
	int i;

	physdev = kzalloc(sizeof(*physdev), GFP_KERNEL);
	if (!physdev)
		return 0;

	if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
		dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
		kfree(physdev);
		return 0;
	}
	nphysicals = get_unaligned_be32(physdev->LUNListLength) / 24;

	for (i = 0; i < nphysicals; i++)
		if (!memcmp(&physdev->LUN[i].lunid[0], scsi3addr, 8)) {
			sa = get_unaligned_be64(&physdev->LUN[i].wwid[0]);
			break;
		}

	kfree(physdev);

	return sa;
}

static void hpsa_get_sas_address(struct ctlr_info *h, unsigned char *scsi3addr,
					struct hpsa_scsi_dev_t *dev)
{
	int rc;
	u64 sa = 0;

	if (is_hba_lunid(scsi3addr)) {
		struct bmic_sense_subsystem_info *ssi;

		ssi = kzalloc(sizeof(*ssi), GFP_KERNEL);
3466
		if (!ssi)
K
Kevin Barnett 已提交
3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483
			return;

		rc = hpsa_bmic_sense_subsystem_information(h,
					scsi3addr, 0, ssi, sizeof(*ssi));
		if (rc == 0) {
			sa = get_unaligned_be64(ssi->primary_world_wide_id);
			h->sas_address = sa;
		}

		kfree(ssi);
	} else
		sa = hpsa_get_sas_address_from_report_physical(h, scsi3addr);

	dev->sas_address = sa;
}

/* Get a device id from inquiry page 0x83 */
3484
static bool hpsa_vpd_page_supported(struct ctlr_info *h,
3485 3486 3487 3488 3489 3490 3491 3492 3493
	unsigned char scsi3addr[], u8 page)
{
	int rc;
	int i;
	int pages;
	unsigned char *buf, bufsize;

	buf = kzalloc(256, GFP_KERNEL);
	if (!buf)
3494
		return false;
3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520

	/* Get the size of the page list first */
	rc = hpsa_scsi_do_inquiry(h, scsi3addr,
				VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
				buf, HPSA_VPD_HEADER_SZ);
	if (rc != 0)
		goto exit_unsupported;
	pages = buf[3];
	if ((pages + HPSA_VPD_HEADER_SZ) <= 255)
		bufsize = pages + HPSA_VPD_HEADER_SZ;
	else
		bufsize = 255;

	/* Get the whole VPD page list */
	rc = hpsa_scsi_do_inquiry(h, scsi3addr,
				VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
				buf, bufsize);
	if (rc != 0)
		goto exit_unsupported;

	pages = buf[3];
	for (i = 1; i <= pages; i++)
		if (buf[3 + i] == page)
			goto exit_supported;
exit_unsupported:
	kfree(buf);
3521
	return false;
3522 3523
exit_supported:
	kfree(buf);
3524
	return true;
3525 3526
}

3527 3528 3529 3530 3531 3532 3533 3534 3535
static void hpsa_get_ioaccel_status(struct ctlr_info *h,
	unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
{
	int rc;
	unsigned char *buf;
	u8 ioaccel_status;

	this_device->offload_config = 0;
	this_device->offload_enabled = 0;
3536
	this_device->offload_to_be_enabled = 0;
3537 3538 3539 3540

	buf = kzalloc(64, GFP_KERNEL);
	if (!buf)
		return;
3541 3542
	if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS))
		goto out;
3543
	rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3544
			VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64);
3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559
	if (rc != 0)
		goto out;

#define IOACCEL_STATUS_BYTE 4
#define OFFLOAD_CONFIGURED_BIT 0x01
#define OFFLOAD_ENABLED_BIT 0x02
	ioaccel_status = buf[IOACCEL_STATUS_BYTE];
	this_device->offload_config =
		!!(ioaccel_status & OFFLOAD_CONFIGURED_BIT);
	if (this_device->offload_config) {
		this_device->offload_enabled =
			!!(ioaccel_status & OFFLOAD_ENABLED_BIT);
		if (hpsa_get_raid_map(h, scsi3addr, this_device))
			this_device->offload_enabled = 0;
	}
3560
	this_device->offload_to_be_enabled = this_device->offload_enabled;
3561 3562 3563 3564 3565
out:
	kfree(buf);
	return;
}

3566 3567
/* Get the device id from inquiry page 0x83 */
static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
D
Don Brace 已提交
3568
	unsigned char *device_id, int index, int buflen)
3569 3570 3571 3572
{
	int rc;
	unsigned char *buf;

3573 3574 3575 3576
	/* Does controller have VPD for device id? */
	if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_DEVICE_ID))
		return 1; /* not supported */

3577 3578
	buf = kzalloc(64, GFP_KERNEL);
	if (!buf)
3579
		return -ENOMEM;
3580 3581 3582 3583 3584 3585 3586 3587

	rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE |
					HPSA_VPD_LV_DEVICE_ID, buf, 64);
	if (rc == 0) {
		if (buflen > 16)
			buflen = 16;
		memcpy(device_id, &buf[8], buflen);
	}
D
Don Brace 已提交
3588

3589
	kfree(buf);
D
Don Brace 已提交
3590

3591
	return rc; /*0 - got id,  otherwise, didn't */
3592 3593 3594
}

static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
3595
		void *buf, int bufsize,
3596 3597 3598 3599 3600 3601 3602
		int extended_response)
{
	int rc = IO_OK;
	struct CommandList *c;
	unsigned char scsi3addr[8];
	struct ErrorInfo *ei;

3603
	c = cmd_alloc(h);
3604

3605 3606
	/* address the controller */
	memset(scsi3addr, 0, sizeof(scsi3addr));
3607 3608 3609 3610 3611
	if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
		buf, bufsize, 0, scsi3addr, TYPE_CMD)) {
		rc = -1;
		goto out;
	}
3612 3613
	if (extended_response)
		c->Request.CDB[1] = extended_response;
3614
	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3615
					PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
3616 3617
	if (rc)
		goto out;
3618 3619 3620
	ei = c->err_info;
	if (ei->CommandStatus != 0 &&
	    ei->CommandStatus != CMD_DATA_UNDERRUN) {
3621
		hpsa_scsi_interpret_error(h, c);
3622
		rc = -1;
3623
	} else {
3624 3625 3626
		struct ReportLUNdata *rld = buf;

		if (rld->extended_response_flag != extended_response) {
3627 3628 3629
			dev_err(&h->pdev->dev,
				"report luns requested format %u, got %u\n",
				extended_response,
3630
				rld->extended_response_flag);
3631 3632
			rc = -1;
		}
3633
	}
3634
out:
3635
	cmd_free(h, c);
3636 3637 3638 3639
	return rc;
}

static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
3640
		struct ReportExtendedLUNdata *buf, int bufsize)
3641
{
3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667
	int rc;
	struct ReportLUNdata *lbuf;

	rc = hpsa_scsi_do_report_luns(h, 0, buf, bufsize,
				      HPSA_REPORT_PHYS_EXTENDED);
	if (!rc || !hpsa_allow_any)
		return rc;

	/* REPORT PHYS EXTENDED is not supported */
	lbuf = kzalloc(sizeof(*lbuf), GFP_KERNEL);
	if (!lbuf)
		return -ENOMEM;

	rc = hpsa_scsi_do_report_luns(h, 0, lbuf, sizeof(*lbuf), 0);
	if (!rc) {
		int i;
		u32 nphys;

		/* Copy ReportLUNdata header */
		memcpy(buf, lbuf, 8);
		nphys = be32_to_cpu(*((__be32 *)lbuf->LUNListLength)) / 8;
		for (i = 0; i < nphys; i++)
			memcpy(buf->LUN[i].lunid, lbuf->LUN[i], 8);
	}
	kfree(lbuf);
	return rc;
3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683
}

static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
		struct ReportLUNdata *buf, int bufsize)
{
	return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
}

static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
	int bus, int target, int lun)
{
	device->bus = bus;
	device->target = target;
	device->lun = lun;
}

3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697
/* Use VPD inquiry to get details of volume status */
static int hpsa_get_volume_status(struct ctlr_info *h,
					unsigned char scsi3addr[])
{
	int rc;
	int status;
	int size;
	unsigned char *buf;

	buf = kzalloc(64, GFP_KERNEL);
	if (!buf)
		return HPSA_VPD_LV_STATUS_UNSUPPORTED;

	/* Does controller have VPD for logical volume status? */
3698
	if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_STATUS))
3699 3700 3701 3702 3703
		goto exit_failed;

	/* Get the size of the VPD return buffer */
	rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
					buf, HPSA_VPD_HEADER_SZ);
3704
	if (rc != 0)
3705 3706 3707 3708 3709 3710
		goto exit_failed;
	size = buf[3];

	/* Now get the whole VPD buffer */
	rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
					buf, size + HPSA_VPD_HEADER_SZ);
3711
	if (rc != 0)
3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724
		goto exit_failed;
	status = buf[4]; /* status byte */

	kfree(buf);
	return status;
exit_failed:
	kfree(buf);
	return HPSA_VPD_LV_STATUS_UNSUPPORTED;
}

/* Determine offline status of a volume.
 * Return either:
 *  0 (not offline)
3725
 *  0xff (offline for unknown reasons)
3726 3727 3728
 *  # (integer code indicating one of several NOT READY states
 *     describing why a volume is to be kept offline)
 */
3729
static unsigned char hpsa_volume_offline(struct ctlr_info *h,
3730 3731 3732
					unsigned char scsi3addr[])
{
	struct CommandList *c;
3733 3734 3735
	unsigned char *sense;
	u8 sense_key, asc, ascq;
	int sense_len;
3736
	int rc, ldstat = 0;
3737 3738 3739 3740 3741 3742 3743
	u16 cmd_status;
	u8 scsi_status;
#define ASC_LUN_NOT_READY 0x04
#define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04
#define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02

	c = cmd_alloc(h);
3744

3745
	(void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD);
3746 3747
	rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
					DEFAULT_TIMEOUT);
3748 3749
	if (rc) {
		cmd_free(h, c);
3750
		return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3751
	}
3752
	sense = c->err_info->SenseInfo;
3753 3754 3755 3756 3757
	if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
		sense_len = sizeof(c->err_info->SenseInfo);
	else
		sense_len = c->err_info->SenseLen;
	decode_sense_data(sense, sense_len, &sense_key, &asc, &ascq);
3758 3759 3760 3761 3762 3763 3764 3765 3766
	cmd_status = c->err_info->CommandStatus;
	scsi_status = c->err_info->ScsiStatus;
	cmd_free(h, c);

	/* Determine the reason for not ready state */
	ldstat = hpsa_get_volume_status(h, scsi3addr);

	/* Keep volume offline in certain cases: */
	switch (ldstat) {
3767
	case HPSA_LV_FAILED:
3768
	case HPSA_LV_UNDERGOING_ERASE:
S
Scott Benesh 已提交
3769
	case HPSA_LV_NOT_AVAILABLE:
3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788
	case HPSA_LV_UNDERGOING_RPI:
	case HPSA_LV_PENDING_RPI:
	case HPSA_LV_ENCRYPTED_NO_KEY:
	case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
	case HPSA_LV_UNDERGOING_ENCRYPTION:
	case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
	case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
		return ldstat;
	case HPSA_VPD_LV_STATUS_UNSUPPORTED:
		/* If VPD status page isn't available,
		 * use ASC/ASCQ to determine state
		 */
		if ((ascq == ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS) ||
			(ascq == ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ))
			return ldstat;
		break;
	default:
		break;
	}
3789
	return HPSA_LV_OK;
3790 3791
}

S
Stephen Cameron 已提交
3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813
/*
 * Find out if a logical device supports aborts by simply trying one.
 * Smart Array may claim not to support aborts on logical drives, but
 * if a MSA2000 * is connected, the drives on that will be presented
 * by the Smart Array as logical drives, and aborts may be sent to
 * those devices successfully.  So the simplest way to find out is
 * to simply try an abort and see how the device responds.
 */
static int hpsa_device_supports_aborts(struct ctlr_info *h,
					unsigned char *scsi3addr)
{
	struct CommandList *c;
	struct ErrorInfo *ei;
	int rc = 0;

	u64 tag = (u64) -1; /* bogus tag */

	/* Assume that physical devices support aborts */
	if (!is_logical_dev_addr_mode(scsi3addr))
		return 1;

	c = cmd_alloc(h);
3814

S
Stephen Cameron 已提交
3815
	(void) fill_cmd(c, HPSA_ABORT_MSG, h, &tag, 0, 0, scsi3addr, TYPE_MSG);
3816 3817
	(void) hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
					DEFAULT_TIMEOUT);
S
Stephen Cameron 已提交
3818 3819 3820 3821 3822 3823 3824 3825 3826 3827
	/* no unmap needed here because no data xfer. */
	ei = c->err_info;
	switch (ei->CommandStatus) {
	case CMD_INVALID:
		rc = 0;
		break;
	case CMD_UNABORTABLE:
	case CMD_ABORT_FAILED:
		rc = 1;
		break;
3828 3829 3830
	case CMD_TMF_STATUS:
		rc = hpsa_evaluate_tmf_status(h, c);
		break;
S
Stephen Cameron 已提交
3831 3832 3833 3834 3835 3836 3837 3838
	default:
		rc = 0;
		break;
	}
	cmd_free(h, c);
	return rc;
}

3839
static int hpsa_update_device_info(struct ctlr_info *h,
3840 3841
	unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device,
	unsigned char *is_OBDR_device)
3842
{
3843 3844 3845 3846 3847 3848

#define OBDR_SIG_OFFSET 43
#define OBDR_TAPE_SIG "$DR-10"
#define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
#define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)

3849
	unsigned char *inq_buff;
3850
	unsigned char *obdr_sig;
3851
	int rc = 0;
3852

3853
	inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
3854 3855
	if (!inq_buff) {
		rc = -ENOMEM;
3856
		goto bail_out;
3857
	}
3858 3859 3860 3861 3862

	/* Do an inquiry to the device to see what it is. */
	if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
		(unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
		dev_err(&h->pdev->dev,
3863 3864 3865
			"%s: inquiry failed, device will be skipped.\n",
			__func__);
		rc = HPSA_INQUIRY_FAILED;
3866 3867 3868
		goto bail_out;
	}

3869 3870
	scsi_sanitize_inquiry_string(&inq_buff[8], 8);
	scsi_sanitize_inquiry_string(&inq_buff[16], 16);
D
Don Brace 已提交
3871

3872 3873 3874 3875 3876 3877
	this_device->devtype = (inq_buff[0] & 0x1f);
	memcpy(this_device->scsi3addr, scsi3addr, 8);
	memcpy(this_device->vendor, &inq_buff[8],
		sizeof(this_device->vendor));
	memcpy(this_device->model, &inq_buff[16],
		sizeof(this_device->model));
3878
	this_device->rev = inq_buff[2];
3879 3880
	memset(this_device->device_id, 0,
		sizeof(this_device->device_id));
3881 3882 3883 3884 3885 3886 3887 3888 3889
	if (hpsa_get_device_id(h, scsi3addr, this_device->device_id, 8,
		sizeof(this_device->device_id)))
		dev_err(&h->pdev->dev,
			"hpsa%d: %s: can't get device id for host %d:C0:T%d:L%d\t%s\t%.16s\n",
			h->ctlr, __func__,
			h->scsi_host->host_no,
			this_device->target, this_device->lun,
			scsi_device_type(this_device->devtype),
			this_device->model);
3890

D
Don Brace 已提交
3891 3892
	if ((this_device->devtype == TYPE_DISK ||
		this_device->devtype == TYPE_ZBC) &&
3893
		is_logical_dev_addr_mode(scsi3addr)) {
3894
		unsigned char volume_offline;
3895

3896
		hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
3897 3898
		if (h->fw_support & MISC_FW_RAID_OFFLOAD_BASIC)
			hpsa_get_ioaccel_status(h, scsi3addr, this_device);
3899
		volume_offline = hpsa_volume_offline(h, scsi3addr);
3900
		this_device->volume_offline = volume_offline;
3901 3902 3903 3904 3905 3906 3907
		if (volume_offline == HPSA_LV_FAILED) {
			rc = HPSA_LV_FAILED;
			dev_err(&h->pdev->dev,
				"%s: LV failed, device will be skipped.\n",
				__func__);
			goto bail_out;
		}
3908
	} else {
3909
		this_device->raid_level = RAID_UNKNOWN;
3910 3911
		this_device->offload_config = 0;
		this_device->offload_enabled = 0;
3912
		this_device->offload_to_be_enabled = 0;
3913
		this_device->hba_ioaccel_enabled = 0;
3914
		this_device->volume_offline = 0;
3915
		this_device->queue_depth = h->nr_cmds;
3916
	}
3917

3918 3919 3920 3921 3922 3923 3924 3925 3926
	if (is_OBDR_device) {
		/* See if this is a One-Button-Disaster-Recovery device
		 * by looking for "$DR-10" at offset 43 in inquiry data.
		 */
		obdr_sig = &inq_buff[OBDR_SIG_OFFSET];
		*is_OBDR_device = (this_device->devtype == TYPE_ROM &&
					strncmp(obdr_sig, OBDR_TAPE_SIG,
						OBDR_SIG_LEN) == 0);
	}
3927 3928 3929 3930 3931
	kfree(inq_buff);
	return 0;

bail_out:
	kfree(inq_buff);
3932
	return rc;
3933 3934
}

S
Stephen Cameron 已提交
3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959
static void hpsa_update_device_supports_aborts(struct ctlr_info *h,
			struct hpsa_scsi_dev_t *dev, u8 *scsi3addr)
{
	unsigned long flags;
	int rc, entry;
	/*
	 * See if this device supports aborts.  If we already know
	 * the device, we already know if it supports aborts, otherwise
	 * we have to find out if it supports aborts by trying one.
	 */
	spin_lock_irqsave(&h->devlock, flags);
	rc = hpsa_scsi_find_entry(dev, h->dev, h->ndevices, &entry);
	if ((rc == DEVICE_SAME || rc == DEVICE_UPDATED) &&
		entry >= 0 && entry < h->ndevices) {
		dev->supports_aborts = h->dev[entry]->supports_aborts;
		spin_unlock_irqrestore(&h->devlock, flags);
	} else {
		spin_unlock_irqrestore(&h->devlock, flags);
		dev->supports_aborts =
				hpsa_device_supports_aborts(h, scsi3addr);
		if (dev->supports_aborts < 0)
			dev->supports_aborts = 0;
	}
}

3960 3961
/*
 * Helper function to assign bus, target, lun mapping of devices.
3962 3963 3964
 * Logical drive target and lun are assigned at this time, but
 * physical device lun and target assignment are deferred (assigned
 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
3965
*/
3966
static void figure_bus_target_lun(struct ctlr_info *h,
3967
	u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device)
3968
{
3969
	u32 lunid = get_unaligned_le32(lunaddrbytes);
3970 3971 3972

	if (!is_logical_dev_addr_mode(lunaddrbytes)) {
		/* physical device, target and lun filled in later */
3973 3974 3975 3976 3977
		if (is_hba_lunid(lunaddrbytes)) {
			int bus = HPSA_HBA_BUS;

			if (!device->rev)
				bus = HPSA_LEGACY_HBA_BUS;
3978
			hpsa_set_bus_target_lun(device,
3979 3980
					bus, 0, lunid & 0x3fff);
		} else
3981
			/* defer target, lun assignment for physical devices */
3982 3983
			hpsa_set_bus_target_lun(device,
					HPSA_PHYSICAL_DEVICE_BUS, -1, -1);
3984 3985 3986
		return;
	}
	/* It's a logical device */
S
Scott Teel 已提交
3987
	if (device->external) {
3988
		hpsa_set_bus_target_lun(device,
3989 3990
			HPSA_EXTERNAL_RAID_VOLUME_BUS, (lunid >> 16) & 0x3fff,
			lunid & 0x00ff);
3991
		return;
3992
	}
3993 3994
	hpsa_set_bus_target_lun(device, HPSA_RAID_VOLUME_BUS,
				0, lunid & 0x3fff);
3995 3996 3997
}


3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008
/*
 * Get address of physical disk used for an ioaccel2 mode command:
 *	1. Extract ioaccel2 handle from the command.
 *	2. Find a matching ioaccel2 handle from list of physical disks.
 *	3. Return:
 *		1 and set scsi3addr to address of matching physical
 *		0 if no matching physical disk was found.
 */
static int hpsa_get_pdisk_of_ioaccel2(struct ctlr_info *h,
	struct CommandList *ioaccel2_cmd_to_abort, unsigned char *scsi3addr)
{
4009 4010 4011
	struct io_accel2_cmd *c2 =
			&h->ioaccel2_cmd_pool[ioaccel2_cmd_to_abort->cmdindex];
	unsigned long flags;
4012 4013
	int i;

4014 4015 4016 4017 4018 4019 4020 4021 4022 4023
	spin_lock_irqsave(&h->devlock, flags);
	for (i = 0; i < h->ndevices; i++)
		if (h->dev[i]->ioaccel_handle == le32_to_cpu(c2->scsi_nexus)) {
			memcpy(scsi3addr, h->dev[i]->scsi3addr,
				sizeof(h->dev[i]->scsi3addr));
			spin_unlock_irqrestore(&h->devlock, flags);
			return 1;
		}
	spin_unlock_irqrestore(&h->devlock, flags);
	return 0;
4024
}
4025

S
Scott Teel 已提交
4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046
static int  figure_external_status(struct ctlr_info *h, int raid_ctlr_position,
	int i, int nphysicals, int nlocal_logicals)
{
	/* In report logicals, local logicals are listed first,
	* then any externals.
	*/
	int logicals_start = nphysicals + (raid_ctlr_position == 0);

	if (i == raid_ctlr_position)
		return 0;

	if (i < logicals_start)
		return 0;

	/* i is in logicals range, but still within local logicals */
	if ((i - nphysicals - (raid_ctlr_position == 0)) < nlocal_logicals)
		return 0;

	return 1; /* it's an external lun */
}

4047 4048 4049 4050 4051 4052 4053
/*
 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG.  Data is returned in physdev,
 * logdev.  The number of luns in physdev and logdev are returned in
 * *nphysicals and *nlogicals, respectively.
 * Returns 0 on success, -1 otherwise.
 */
static int hpsa_gather_lun_info(struct ctlr_info *h,
4054
	struct ReportExtendedLUNdata *physdev, u32 *nphysicals,
4055
	struct ReportLUNdata *logdev, u32 *nlogicals)
4056
{
4057
	if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
4058 4059 4060
		dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
		return -1;
	}
4061
	*nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24;
4062
	if (*nphysicals > HPSA_MAX_PHYS_LUN) {
4063 4064
		dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded. %d LUNs ignored.\n",
			HPSA_MAX_PHYS_LUN, *nphysicals - HPSA_MAX_PHYS_LUN);
4065 4066
		*nphysicals = HPSA_MAX_PHYS_LUN;
	}
4067
	if (hpsa_scsi_do_report_log_luns(h, logdev, sizeof(*logdev))) {
4068 4069 4070
		dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
		return -1;
	}
4071
	*nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089
	/* Reject Logicals in excess of our max capability. */
	if (*nlogicals > HPSA_MAX_LUN) {
		dev_warn(&h->pdev->dev,
			"maximum logical LUNs (%d) exceeded.  "
			"%d LUNs ignored.\n", HPSA_MAX_LUN,
			*nlogicals - HPSA_MAX_LUN);
			*nlogicals = HPSA_MAX_LUN;
	}
	if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
		dev_warn(&h->pdev->dev,
			"maximum logical + physical LUNs (%d) exceeded. "
			"%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
			*nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
		*nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
	}
	return 0;
}

D
Don Brace 已提交
4090 4091
static u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position,
	int i, int nphysicals, int nlogicals,
4092
	struct ReportExtendedLUNdata *physdev_list,
4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106
	struct ReportLUNdata *logdev_list)
{
	/* Helper function, figure out where the LUN ID info is coming from
	 * given index i, lists of physical and logical devices, where in
	 * the list the raid controller is supposed to appear (first or last)
	 */

	int logicals_start = nphysicals + (raid_ctlr_position == 0);
	int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0);

	if (i == raid_ctlr_position)
		return RAID_CTLR_LUNID;

	if (i < logicals_start)
4107 4108
		return &physdev_list->LUN[i -
				(raid_ctlr_position == 0)].lunid[0];
4109 4110 4111 4112 4113 4114 4115 4116

	if (i < last_device)
		return &logdev_list->LUN[i - nphysicals -
			(raid_ctlr_position == 0)][0];
	BUG();
	return NULL;
}

4117 4118 4119
/* get physical drive ioaccel handle and queue depth */
static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h,
		struct hpsa_scsi_dev_t *dev,
4120
		struct ReportExtendedLUNdata *rlep, int rle_index,
4121 4122 4123
		struct bmic_identify_physical_device *id_phys)
{
	int rc;
4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134
	struct ext_report_lun_entry *rle;

	/*
	 * external targets don't support BMIC
	 */
	if (dev->external) {
		dev->queue_depth = 7;
		return;
	}

	rle = &rlep->LUN[rle_index];
4135 4136

	dev->ioaccel_handle = rle->ioaccel_handle;
4137
	if ((rle->device_flags & 0x08) && dev->ioaccel_handle)
4138
		dev->hba_ioaccel_enabled = 1;
4139
	memset(id_phys, 0, sizeof(*id_phys));
4140 4141
	rc = hpsa_bmic_id_physical_device(h, &rle->lunid[0],
			GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]), id_phys,
4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153
			sizeof(*id_phys));
	if (!rc)
		/* Reserve space for FW operations */
#define DRIVE_CMDS_RESERVED_FOR_FW 2
#define DRIVE_QUEUE_DEPTH 7
		dev->queue_depth =
			le16_to_cpu(id_phys->current_queue_depth_limit) -
				DRIVE_CMDS_RESERVED_FOR_FW;
	else
		dev->queue_depth = DRIVE_QUEUE_DEPTH; /* conservative */
}

4154
static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device,
4155
	struct ReportExtendedLUNdata *rlep, int rle_index,
4156 4157
	struct bmic_identify_physical_device *id_phys)
{
4158 4159 4160
	struct ext_report_lun_entry *rle = &rlep->LUN[rle_index];

	if ((rle->device_flags & 0x08) && this_device->ioaccel_handle)
4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179
		this_device->hba_ioaccel_enabled = 1;

	memcpy(&this_device->active_path_index,
		&id_phys->active_path_number,
		sizeof(this_device->active_path_index));
	memcpy(&this_device->path_map,
		&id_phys->redundant_path_present_map,
		sizeof(this_device->path_map));
	memcpy(&this_device->box,
		&id_phys->alternate_paths_phys_box_on_port,
		sizeof(this_device->box));
	memcpy(&this_device->phys_connector,
		&id_phys->alternate_paths_phys_connector,
		sizeof(this_device->phys_connector));
	memcpy(&this_device->bay,
		&id_phys->phys_bay_in_box,
		sizeof(this_device->bay));
}

S
Scott Teel 已提交
4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204
/* get number of local logical disks. */
static int hpsa_set_local_logical_count(struct ctlr_info *h,
	struct bmic_identify_controller *id_ctlr,
	u32 *nlocals)
{
	int rc;

	if (!id_ctlr) {
		dev_warn(&h->pdev->dev, "%s: id_ctlr buffer is NULL.\n",
			__func__);
		return -ENOMEM;
	}
	memset(id_ctlr, 0, sizeof(*id_ctlr));
	rc = hpsa_bmic_id_controller(h, id_ctlr, sizeof(*id_ctlr));
	if (!rc)
		if (id_ctlr->configured_logical_drive_count < 256)
			*nlocals = id_ctlr->configured_logical_drive_count;
		else
			*nlocals = le16_to_cpu(
					id_ctlr->extended_logical_unit_count);
	else
		*nlocals = -1;
	return rc;
}

4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268
static bool hpsa_is_disk_spare(struct ctlr_info *h, u8 *lunaddrbytes)
{
	struct bmic_identify_physical_device *id_phys;
	bool is_spare = false;
	int rc;

	id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
	if (!id_phys)
		return false;

	rc = hpsa_bmic_id_physical_device(h,
					lunaddrbytes,
					GET_BMIC_DRIVE_NUMBER(lunaddrbytes),
					id_phys, sizeof(*id_phys));
	if (rc == 0)
		is_spare = (id_phys->more_flags >> 6) & 0x01;

	kfree(id_phys);
	return is_spare;
}

#define RPL_DEV_FLAG_NON_DISK                           0x1
#define RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED  0x2
#define RPL_DEV_FLAG_UNCONFIG_DISK                      0x4

#define BMIC_DEVICE_TYPE_ENCLOSURE  6

static bool hpsa_skip_device(struct ctlr_info *h, u8 *lunaddrbytes,
				struct ext_report_lun_entry *rle)
{
	u8 device_flags;
	u8 device_type;

	if (!MASKED_DEVICE(lunaddrbytes))
		return false;

	device_flags = rle->device_flags;
	device_type = rle->device_type;

	if (device_flags & RPL_DEV_FLAG_NON_DISK) {
		if (device_type == BMIC_DEVICE_TYPE_ENCLOSURE)
			return false;
		return true;
	}

	if (!(device_flags & RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED))
		return false;

	if (device_flags & RPL_DEV_FLAG_UNCONFIG_DISK)
		return false;

	/*
	 * Spares may be spun down, we do not want to
	 * do an Inquiry to a RAID set spare drive as
	 * that would have them spun up, that is a
	 * performance hit because I/O to the RAID device
	 * stops while the spin up occurs which can take
	 * over 50 seconds.
	 */
	if (hpsa_is_disk_spare(h, lunaddrbytes))
		return true;

	return false;
}
S
Scott Teel 已提交
4269

D
Don Brace 已提交
4270
static void hpsa_update_scsi_devices(struct ctlr_info *h)
4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281
{
	/* the idea here is we could get notified
	 * that some devices have changed, so we do a report
	 * physical luns and report logical luns cmd, and adjust
	 * our list of devices accordingly.
	 *
	 * The scsi3addr's of devices won't change so long as the
	 * adapter is not reset.  That means we can rescan and
	 * tell which devices we already know about, vs. new
	 * devices, vs.  disappearing devices.
	 */
4282
	struct ReportExtendedLUNdata *physdev_list = NULL;
4283
	struct ReportLUNdata *logdev_list = NULL;
4284
	struct bmic_identify_physical_device *id_phys = NULL;
S
Scott Teel 已提交
4285
	struct bmic_identify_controller *id_ctlr = NULL;
4286 4287
	u32 nphysicals = 0;
	u32 nlogicals = 0;
S
Scott Teel 已提交
4288
	u32 nlocal_logicals = 0;
4289
	u32 ndev_allocated = 0;
4290 4291
	struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
	int ncurrent = 0;
4292
	int i, n_ext_target_devs, ndevs_to_allocate;
4293
	int raid_ctlr_position;
K
Kevin Barnett 已提交
4294
	bool physical_device;
4295
	DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS);
4296

4297
	currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_DEVICES, GFP_KERNEL);
4298 4299
	physdev_list = kzalloc(sizeof(*physdev_list), GFP_KERNEL);
	logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL);
4300
	tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
4301
	id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
S
Scott Teel 已提交
4302
	id_ctlr = kzalloc(sizeof(*id_ctlr), GFP_KERNEL);
4303

4304
	if (!currentsd || !physdev_list || !logdev_list ||
S
Scott Teel 已提交
4305
		!tmpdevice || !id_phys || !id_ctlr) {
4306 4307 4308 4309 4310
		dev_err(&h->pdev->dev, "out of memory\n");
		goto out;
	}
	memset(lunzerobits, 0, sizeof(lunzerobits));

D
Don Brace 已提交
4311 4312
	h->drv_req_rescan = 0; /* cancel scheduled rescan - we're doing it. */

4313
	if (hpsa_gather_lun_info(h, physdev_list, &nphysicals,
D
Don Brace 已提交
4314 4315
			logdev_list, &nlogicals)) {
		h->drv_req_rescan = 1;
4316
		goto out;
D
Don Brace 已提交
4317
	}
4318

S
Scott Teel 已提交
4319 4320 4321 4322 4323 4324
	/* Set number of local logicals (non PTRAID) */
	if (hpsa_set_local_logical_count(h, id_ctlr, &nlocal_logicals)) {
		dev_warn(&h->pdev->dev,
			"%s: Can't determine number of local logical devices.\n",
			__func__);
	}
4325

4326 4327 4328
	/* We might see up to the maximum number of logical and physical disks
	 * plus external target devices, and a device for the local RAID
	 * controller.
4329
	 */
4330
	ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1;
4331 4332 4333

	/* Allocate the per device structures */
	for (i = 0; i < ndevs_to_allocate; i++) {
4334 4335 4336 4337 4338 4339 4340
		if (i >= HPSA_MAX_DEVICES) {
			dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded."
				"  %d devices ignored.\n", HPSA_MAX_DEVICES,
				ndevs_to_allocate - HPSA_MAX_DEVICES);
			break;
		}

4341 4342
		currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
		if (!currentsd[i]) {
D
Don Brace 已提交
4343
			h->drv_req_rescan = 1;
4344 4345 4346 4347 4348
			goto out;
		}
		ndev_allocated++;
	}

4349
	if (is_scsi_rev_5(h))
4350 4351 4352 4353
		raid_ctlr_position = 0;
	else
		raid_ctlr_position = nphysicals + nlogicals;

4354
	/* adjust our table of devices */
4355
	n_ext_target_devs = 0;
4356
	for (i = 0; i < nphysicals + nlogicals + 1; i++) {
4357
		u8 *lunaddrbytes, is_OBDR = 0;
4358
		int rc = 0;
4359
		int phys_dev_index = i - (raid_ctlr_position == 0);
4360
		bool skip_device = false;
4361

K
Kevin Barnett 已提交
4362
		physical_device = i < nphysicals + (raid_ctlr_position == 0);
4363 4364

		/* Figure out where the LUN ID info is coming from */
4365 4366
		lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
			i, nphysicals, nlogicals, physdev_list, logdev_list);
4367

4368 4369 4370 4371 4372
		/* Determine if this is a lun from an external target array */
		tmpdevice->external =
			figure_external_status(h, raid_ctlr_position, i,
						nphysicals, nlocal_logicals);

4373 4374 4375 4376 4377 4378 4379 4380 4381
		/*
		 * Skip over some devices such as a spare.
		 */
		if (!tmpdevice->external && physical_device) {
			skip_device = hpsa_skip_device(h, lunaddrbytes,
					&physdev_list->LUN[phys_dev_index]);
			if (skip_device)
				continue;
		}
4382 4383

		/* Get device type, vendor, model, device id */
4384 4385 4386 4387 4388
		rc = hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
							&is_OBDR);
		if (rc == -ENOMEM) {
			dev_warn(&h->pdev->dev,
				"Out of memory, rescan deferred.\n");
D
Don Brace 已提交
4389
			h->drv_req_rescan = 1;
4390
			goto out;
D
Don Brace 已提交
4391
		}
4392
		if (rc) {
4393
			h->drv_req_rescan = 1;
4394 4395 4396
			continue;
		}

4397
		figure_bus_target_lun(h, lunaddrbytes, tmpdevice);
S
Stephen Cameron 已提交
4398
		hpsa_update_device_supports_aborts(h, tmpdevice, lunaddrbytes);
4399 4400
		this_device = currentsd[ncurrent];

4401 4402
		/* Turn on discovery_polling if there are ext target devices.
		 * Event-based change notification is unreliable for those.
4403
		 */
4404 4405 4406 4407 4408 4409
		if (!h->discovery_polling) {
			if (tmpdevice->external) {
				h->discovery_polling = 1;
				dev_info(&h->pdev->dev,
					"External target, activate discovery polling.\n");
			}
4410 4411
		}

4412

4413
		*this_device = *tmpdevice;
K
Kevin Barnett 已提交
4414
		this_device->physical_device = physical_device;
4415

K
Kevin Barnett 已提交
4416 4417 4418 4419 4420
		/*
		 * Expose all devices except for physical devices that
		 * are masked.
		 */
		if (MASKED_DEVICE(lunaddrbytes) && this_device->physical_device)
4421 4422 4423
			this_device->expose_device = 0;
		else
			this_device->expose_device = 1;
4424

K
Kevin Barnett 已提交
4425 4426 4427 4428 4429 4430

		/*
		 * Get the SAS address for physical devices that are exposed.
		 */
		if (this_device->physical_device && this_device->expose_device)
			hpsa_get_sas_address(h, lunaddrbytes, this_device);
4431

4432
		switch (this_device->devtype) {
4433
		case TYPE_ROM:
4434 4435 4436 4437 4438 4439 4440
			/* We don't *really* support actual CD-ROM devices,
			 * just "One Button Disaster Recovery" tape drive
			 * which temporarily pretends to be a CD-ROM drive.
			 * So we check that the device is really an OBDR tape
			 * device by checking for "$DR-10" in bytes 43-48 of
			 * the inquiry data.
			 */
4441 4442
			if (is_OBDR)
				ncurrent++;
4443 4444
			break;
		case TYPE_DISK:
D
Don Brace 已提交
4445
		case TYPE_ZBC:
K
Kevin Barnett 已提交
4446
			if (this_device->physical_device) {
4447 4448
				/* The disk is in HBA mode. */
				/* Never use RAID mapper in HBA mode. */
4449
				this_device->offload_enabled = 0;
4450
				hpsa_get_ioaccel_drive_info(h, this_device,
4451 4452 4453
					physdev_list, phys_dev_index, id_phys);
				hpsa_get_path_info(this_device,
					physdev_list, phys_dev_index, id_phys);
4454
			}
4455
			ncurrent++;
4456 4457 4458
			break;
		case TYPE_TAPE:
		case TYPE_MEDIUM_CHANGER:
4459 4460
			ncurrent++;
			break;
4461
		case TYPE_ENCLOSURE:
4462 4463
			if (!this_device->external)
				hpsa_get_enclosure_info(h, lunaddrbytes,
4464 4465
						physdev_list, phys_dev_index,
						this_device);
4466
			ncurrent++;
4467
			break;
4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480
		case TYPE_RAID:
			/* Only present the Smartarray HBA as a RAID controller.
			 * If it's a RAID controller other than the HBA itself
			 * (an external RAID controller, MSA500 or similar)
			 * don't present it.
			 */
			if (!is_hba_lunid(lunaddrbytes))
				break;
			ncurrent++;
			break;
		default:
			break;
		}
4481
		if (ncurrent >= HPSA_MAX_DEVICES)
4482 4483
			break;
	}
K
Kevin Barnett 已提交
4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495

	if (h->sas_host == NULL) {
		int rc = 0;

		rc = hpsa_add_sas_host(h);
		if (rc) {
			dev_warn(&h->pdev->dev,
				"Could not add sas host %d\n", rc);
			goto out;
		}
	}

D
Don Brace 已提交
4496
	adjust_hpsa_scsi_table(h, currentsd, ncurrent);
4497 4498 4499 4500 4501 4502 4503
out:
	kfree(tmpdevice);
	for (i = 0; i < ndev_allocated; i++)
		kfree(currentsd[i]);
	kfree(currentsd);
	kfree(physdev_list);
	kfree(logdev_list);
S
Scott Teel 已提交
4504
	kfree(id_ctlr);
4505
	kfree(id_phys);
4506 4507
}

4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518
static void hpsa_set_sg_descriptor(struct SGDescriptor *desc,
				   struct scatterlist *sg)
{
	u64 addr64 = (u64) sg_dma_address(sg);
	unsigned int len = sg_dma_len(sg);

	desc->Addr = cpu_to_le64(addr64);
	desc->Len = cpu_to_le32(len);
	desc->Ext = 0;
}

4519 4520
/*
 * hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
4521 4522 4523
 * dma mapping  and fills in the scatter gather entries of the
 * hpsa command, cp.
 */
4524
static int hpsa_scatter_gather(struct ctlr_info *h,
4525 4526 4527 4528
		struct CommandList *cp,
		struct scsi_cmnd *cmd)
{
	struct scatterlist *sg;
4529
	int use_sg, i, sg_limit, chained, last_sg;
4530
	struct SGDescriptor *curr_sg;
4531

4532
	BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4533 4534 4535 4536 4537 4538 4539 4540

	use_sg = scsi_dma_map(cmd);
	if (use_sg < 0)
		return use_sg;

	if (!use_sg)
		goto sglist_finished;

4541 4542 4543 4544 4545 4546 4547
	/*
	 * If the number of entries is greater than the max for a single list,
	 * then we have a chained list; we will set up all but one entry in the
	 * first list (the last entry is saved for link information);
	 * otherwise, we don't have a chained list and we'll set up at each of
	 * the entries in the one list.
	 */
4548
	curr_sg = cp->SG;
4549 4550 4551 4552
	chained = use_sg > h->max_cmd_sg_entries;
	sg_limit = chained ? h->max_cmd_sg_entries - 1 : use_sg;
	last_sg = scsi_sg_count(cmd) - 1;
	scsi_for_each_sg(cmd, sg, sg_limit, i) {
4553
		hpsa_set_sg_descriptor(curr_sg, sg);
4554 4555
		curr_sg++;
	}
4556

4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571
	if (chained) {
		/*
		 * Continue with the chained list.  Set curr_sg to the chained
		 * list.  Modify the limit to the total count less the entries
		 * we've already set up.  Resume the scan at the list entry
		 * where the previous loop left off.
		 */
		curr_sg = h->cmd_sg_list[cp->cmdindex];
		sg_limit = use_sg - sg_limit;
		for_each_sg(sg, sg, sg_limit, i) {
			hpsa_set_sg_descriptor(curr_sg, sg);
			curr_sg++;
		}
	}

4572
	/* Back the pointer up to the last entry and mark it as "last". */
4573
	(curr_sg - 1)->Ext = cpu_to_le32(HPSA_SG_LAST);
4574 4575 4576 4577 4578 4579

	if (use_sg + chained > h->maxSG)
		h->maxSG = use_sg + chained;

	if (chained) {
		cp->Header.SGList = h->max_cmd_sg_entries;
4580
		cp->Header.SGTotal = cpu_to_le16(use_sg + 1);
4581 4582 4583 4584
		if (hpsa_map_sg_chain_block(h, cp)) {
			scsi_dma_unmap(cmd);
			return -1;
		}
4585
		return 0;
4586 4587 4588 4589
	}

sglist_finished:

4590
	cp->Header.SGList = (u8) use_sg;   /* no. SGs contig in this cmd */
4591
	cp->Header.SGTotal = cpu_to_le16(use_sg); /* total sgs in cmd list */
4592 4593 4594
	return 0;
}

4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609
#define IO_ACCEL_INELIGIBLE (1)
static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len)
{
	int is_write = 0;
	u32 block;
	u32 block_cnt;

	/* Perform some CDB fixups if needed using 10 byte reads/writes only */
	switch (cdb[0]) {
	case WRITE_6:
	case WRITE_12:
		is_write = 1;
	case READ_6:
	case READ_12:
		if (*cdb_len == 6) {
4610 4611 4612
			block = (((cdb[1] & 0x1F) << 16) |
				(cdb[2] << 8) |
				cdb[3]);
4613
			block_cnt = cdb[4];
4614 4615
			if (block_cnt == 0)
				block_cnt = 256;
4616 4617
		} else {
			BUG_ON(*cdb_len != 12);
4618 4619
			block = get_unaligned_be32(&cdb[2]);
			block_cnt = get_unaligned_be32(&cdb[6]);
4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639
		}
		if (block_cnt > 0xffff)
			return IO_ACCEL_INELIGIBLE;

		cdb[0] = is_write ? WRITE_10 : READ_10;
		cdb[1] = 0;
		cdb[2] = (u8) (block >> 24);
		cdb[3] = (u8) (block >> 16);
		cdb[4] = (u8) (block >> 8);
		cdb[5] = (u8) (block);
		cdb[6] = 0;
		cdb[7] = (u8) (block_cnt >> 8);
		cdb[8] = (u8) (block_cnt);
		cdb[9] = 0;
		*cdb_len = 10;
		break;
	}
	return 0;
}

4640
static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h,
4641
	struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4642
	u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653
{
	struct scsi_cmnd *cmd = c->scsi_cmd;
	struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
	unsigned int len;
	unsigned int total_len = 0;
	struct scatterlist *sg;
	u64 addr64;
	int use_sg, i;
	struct SGDescriptor *curr_sg;
	u32 control = IOACCEL1_CONTROL_SIMPLEQUEUE;

4654
	/* TODO: implement chaining support */
4655 4656
	if (scsi_sg_count(cmd) > h->ioaccel_maxsg) {
		atomic_dec(&phys_disk->ioaccel_cmds_out);
4657
		return IO_ACCEL_INELIGIBLE;
4658
	}
4659

4660 4661
	BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX);

4662 4663
	if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
		atomic_dec(&phys_disk->ioaccel_cmds_out);
4664
		return IO_ACCEL_INELIGIBLE;
4665
	}
4666

4667 4668 4669 4670 4671 4672 4673 4674
	c->cmd_type = CMD_IOACCEL1;

	/* Adjust the DMA address to point to the accelerated command buffer */
	c->busaddr = (u32) h->ioaccel_cmd_pool_dhandle +
				(c->cmdindex * sizeof(*cp));
	BUG_ON(c->busaddr & 0x0000007F);

	use_sg = scsi_dma_map(cmd);
4675 4676
	if (use_sg < 0) {
		atomic_dec(&phys_disk->ioaccel_cmds_out);
4677
		return use_sg;
4678
	}
4679 4680 4681 4682 4683 4684 4685

	if (use_sg) {
		curr_sg = cp->SG;
		scsi_for_each_sg(cmd, sg, use_sg, i) {
			addr64 = (u64) sg_dma_address(sg);
			len  = sg_dma_len(sg);
			total_len += len;
4686 4687 4688
			curr_sg->Addr = cpu_to_le64(addr64);
			curr_sg->Len = cpu_to_le32(len);
			curr_sg->Ext = cpu_to_le32(0);
4689 4690
			curr_sg++;
		}
4691
		(--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST);
4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712

		switch (cmd->sc_data_direction) {
		case DMA_TO_DEVICE:
			control |= IOACCEL1_CONTROL_DATA_OUT;
			break;
		case DMA_FROM_DEVICE:
			control |= IOACCEL1_CONTROL_DATA_IN;
			break;
		case DMA_NONE:
			control |= IOACCEL1_CONTROL_NODATAXFER;
			break;
		default:
			dev_err(&h->pdev->dev, "unknown data direction: %d\n",
			cmd->sc_data_direction);
			BUG();
			break;
		}
	} else {
		control |= IOACCEL1_CONTROL_NODATAXFER;
	}

4713
	c->Header.SGList = use_sg;
4714
	/* Fill out the command structure to submit */
D
Don Brace 已提交
4715 4716 4717 4718 4719
	cp->dev_handle = cpu_to_le16(ioaccel_handle & 0xFFFF);
	cp->transfer_len = cpu_to_le32(total_len);
	cp->io_flags = cpu_to_le16(IOACCEL1_IOFLAGS_IO_REQ |
			(cdb_len & IOACCEL1_IOFLAGS_CDBLEN_MASK));
	cp->control = cpu_to_le32(control);
4720 4721
	memcpy(cp->CDB, cdb, cdb_len);
	memcpy(cp->CISS_LUN, scsi3addr, 8);
4722
	/* Tag was already set at init time. */
4723
	enqueue_cmd_and_start_io(h, c);
4724 4725
	return 0;
}
4726

4727 4728 4729 4730 4731 4732 4733 4734 4735 4736
/*
 * Queue a command directly to a device behind the controller using the
 * I/O accelerator path.
 */
static int hpsa_scsi_ioaccel_direct_map(struct ctlr_info *h,
	struct CommandList *c)
{
	struct scsi_cmnd *cmd = c->scsi_cmd;
	struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;

4737 4738 4739
	if (!dev)
		return -1;

4740 4741
	c->phys_disk = dev;

4742
	return hpsa_scsi_ioaccel_queue_command(h, c, dev->ioaccel_handle,
4743
		cmd->cmnd, cmd->cmd_len, dev->scsi3addr, dev);
4744 4745
}

4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757
/*
 * Set encryption parameters for the ioaccel2 request
 */
static void set_encrypt_ioaccel2(struct ctlr_info *h,
	struct CommandList *c, struct io_accel2_cmd *cp)
{
	struct scsi_cmnd *cmd = c->scsi_cmd;
	struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
	struct raid_map_data *map = &dev->raid_map;
	u64 first_block;

	/* Are we doing encryption on this device */
D
Don Brace 已提交
4758
	if (!(le16_to_cpu(map->flags) & RAID_MAP_FLAG_ENCRYPT_ON))
4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772
		return;
	/* Set the data encryption key index. */
	cp->dekindex = map->dekindex;

	/* Set the encryption enable flag, encoded into direction field. */
	cp->direction |= IOACCEL2_DIRECTION_ENCRYPT_MASK;

	/* Set encryption tweak values based on logical block address
	 * If block size is 512, tweak value is LBA.
	 * For other block sizes, tweak is (LBA * block size)/ 512)
	 */
	switch (cmd->cmnd[0]) {
	/* Required? 6-byte cdbs eliminated by fixup_ioaccel_cdb */
	case READ_6:
4773 4774 4775 4776
	case WRITE_6:
		first_block = (((cmd->cmnd[1] & 0x1F) << 16) |
				(cmd->cmnd[2] << 8) |
				cmd->cmnd[3]);
4777 4778 4779 4780 4781 4782
		break;
	case WRITE_10:
	case READ_10:
	/* Required? 12-byte cdbs eliminated by fixup_ioaccel_cdb */
	case WRITE_12:
	case READ_12:
D
Don Brace 已提交
4783
		first_block = get_unaligned_be32(&cmd->cmnd[2]);
4784 4785 4786
		break;
	case WRITE_16:
	case READ_16:
D
Don Brace 已提交
4787
		first_block = get_unaligned_be64(&cmd->cmnd[2]);
4788 4789 4790
		break;
	default:
		dev_err(&h->pdev->dev,
D
Don Brace 已提交
4791 4792
			"ERROR: %s: size (0x%x) not supported for encryption\n",
			__func__, cmd->cmnd[0]);
4793 4794 4795
		BUG();
		break;
	}
D
Don Brace 已提交
4796 4797 4798 4799 4800 4801 4802

	if (le32_to_cpu(map->volume_blk_size) != 512)
		first_block = first_block *
				le32_to_cpu(map->volume_blk_size)/512;

	cp->tweak_lower = cpu_to_le32(first_block);
	cp->tweak_upper = cpu_to_le32(first_block >> 32);
4803 4804
}

4805 4806
static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h,
	struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4807
	u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4808 4809 4810 4811 4812 4813 4814 4815 4816 4817
{
	struct scsi_cmnd *cmd = c->scsi_cmd;
	struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
	struct ioaccel2_sg_element *curr_sg;
	int use_sg, i;
	struct scatterlist *sg;
	u64 addr64;
	u32 len;
	u32 total_len = 0;

4818 4819 4820 4821 4822 4823
	if (!cmd->device)
		return -1;

	if (!cmd->device->hostdata)
		return -1;

4824
	BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4825

4826 4827
	if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
		atomic_dec(&phys_disk->ioaccel_cmds_out);
4828
		return IO_ACCEL_INELIGIBLE;
4829 4830
	}

4831 4832 4833 4834 4835 4836 4837 4838 4839 4840
	c->cmd_type = CMD_IOACCEL2;
	/* Adjust the DMA address to point to the accelerated command buffer */
	c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
				(c->cmdindex * sizeof(*cp));
	BUG_ON(c->busaddr & 0x0000007F);

	memset(cp, 0, sizeof(*cp));
	cp->IU_type = IOACCEL2_IU_TYPE;

	use_sg = scsi_dma_map(cmd);
4841 4842
	if (use_sg < 0) {
		atomic_dec(&phys_disk->ioaccel_cmds_out);
4843
		return use_sg;
4844
	}
4845 4846 4847

	if (use_sg) {
		curr_sg = cp->sg;
4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859
		if (use_sg > h->ioaccel_maxsg) {
			addr64 = le64_to_cpu(
				h->ioaccel2_cmd_sg_list[c->cmdindex]->address);
			curr_sg->address = cpu_to_le64(addr64);
			curr_sg->length = 0;
			curr_sg->reserved[0] = 0;
			curr_sg->reserved[1] = 0;
			curr_sg->reserved[2] = 0;
			curr_sg->chain_indicator = 0x80;

			curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex];
		}
4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874
		scsi_for_each_sg(cmd, sg, use_sg, i) {
			addr64 = (u64) sg_dma_address(sg);
			len  = sg_dma_len(sg);
			total_len += len;
			curr_sg->address = cpu_to_le64(addr64);
			curr_sg->length = cpu_to_le32(len);
			curr_sg->reserved[0] = 0;
			curr_sg->reserved[1] = 0;
			curr_sg->reserved[2] = 0;
			curr_sg->chain_indicator = 0;
			curr_sg++;
		}

		switch (cmd->sc_data_direction) {
		case DMA_TO_DEVICE:
4875 4876
			cp->direction &= ~IOACCEL2_DIRECTION_MASK;
			cp->direction |= IOACCEL2_DIR_DATA_OUT;
4877 4878
			break;
		case DMA_FROM_DEVICE:
4879 4880
			cp->direction &= ~IOACCEL2_DIRECTION_MASK;
			cp->direction |= IOACCEL2_DIR_DATA_IN;
4881 4882
			break;
		case DMA_NONE:
4883 4884
			cp->direction &= ~IOACCEL2_DIRECTION_MASK;
			cp->direction |= IOACCEL2_DIR_NO_DATA;
4885 4886 4887 4888 4889 4890 4891 4892
			break;
		default:
			dev_err(&h->pdev->dev, "unknown data direction: %d\n",
				cmd->sc_data_direction);
			BUG();
			break;
		}
	} else {
4893 4894
		cp->direction &= ~IOACCEL2_DIRECTION_MASK;
		cp->direction |= IOACCEL2_DIR_NO_DATA;
4895
	}
4896 4897 4898 4899

	/* Set encryption parameters, if necessary */
	set_encrypt_ioaccel2(h, c, cp);

D
Don Brace 已提交
4900
	cp->scsi_nexus = cpu_to_le32(ioaccel_handle);
4901
	cp->Tag = cpu_to_le32(c->cmdindex << DIRECT_LOOKUP_SHIFT);
4902 4903 4904 4905 4906
	memcpy(cp->cdb, cdb, sizeof(cp->cdb));

	cp->data_len = cpu_to_le32(total_len);
	cp->err_ptr = cpu_to_le64(c->busaddr +
			offsetof(struct io_accel2_cmd, error_data));
4907
	cp->err_len = cpu_to_le32(sizeof(cp->error_data));
4908

4909 4910 4911
	/* fill in sg elements */
	if (use_sg > h->ioaccel_maxsg) {
		cp->sg_count = 1;
D
Don Brace 已提交
4912
		cp->sg[0].length = cpu_to_le32(use_sg * sizeof(cp->sg[0]));
4913 4914 4915 4916 4917 4918 4919 4920
		if (hpsa_map_ioaccel2_sg_chain_block(h, cp, c)) {
			atomic_dec(&phys_disk->ioaccel_cmds_out);
			scsi_dma_unmap(cmd);
			return -1;
		}
	} else
		cp->sg_count = (u8) use_sg;

4921 4922 4923 4924 4925 4926 4927 4928 4929
	enqueue_cmd_and_start_io(h, c);
	return 0;
}

/*
 * Queue a command to the correct I/O accelerator path.
 */
static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
	struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4930
	u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4931
{
4932 4933 4934 4935 4936 4937
	if (!c->scsi_cmd->device)
		return -1;

	if (!c->scsi_cmd->device->hostdata)
		return -1;

4938 4939 4940 4941 4942 4943
	/* Try to honor the device's queue depth */
	if (atomic_inc_return(&phys_disk->ioaccel_cmds_out) >
					phys_disk->queue_depth) {
		atomic_dec(&phys_disk->ioaccel_cmds_out);
		return IO_ACCEL_INELIGIBLE;
	}
4944 4945
	if (h->transMethod & CFGTBL_Trans_io_accel1)
		return hpsa_scsi_ioaccel1_queue_command(h, c, ioaccel_handle,
4946 4947
						cdb, cdb_len, scsi3addr,
						phys_disk);
4948 4949
	else
		return hpsa_scsi_ioaccel2_queue_command(h, c, ioaccel_handle,
4950 4951
						cdb, cdb_len, scsi3addr,
						phys_disk);
4952 4953
}

4954 4955 4956 4957 4958
static void raid_map_helper(struct raid_map_data *map,
		int offload_to_mirror, u32 *map_index, u32 *current_group)
{
	if (offload_to_mirror == 0)  {
		/* use physical disk in the first mirrored group. */
D
Don Brace 已提交
4959
		*map_index %= le16_to_cpu(map->data_disks_per_row);
4960 4961 4962 4963
		return;
	}
	do {
		/* determine mirror group that *map_index indicates */
D
Don Brace 已提交
4964 4965
		*current_group = *map_index /
			le16_to_cpu(map->data_disks_per_row);
4966 4967
		if (offload_to_mirror == *current_group)
			continue;
D
Don Brace 已提交
4968
		if (*current_group < le16_to_cpu(map->layout_map_count) - 1) {
4969
			/* select map index from next group */
D
Don Brace 已提交
4970
			*map_index += le16_to_cpu(map->data_disks_per_row);
4971 4972 4973
			(*current_group)++;
		} else {
			/* select map index from first group */
D
Don Brace 已提交
4974
			*map_index %= le16_to_cpu(map->data_disks_per_row);
4975 4976 4977 4978 4979
			*current_group = 0;
		}
	} while (offload_to_mirror != *current_group);
}

4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997
/*
 * Attempt to perform offload RAID mapping for a logical volume I/O.
 */
static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h,
	struct CommandList *c)
{
	struct scsi_cmnd *cmd = c->scsi_cmd;
	struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
	struct raid_map_data *map = &dev->raid_map;
	struct raid_map_disk_data *dd = &map->data[0];
	int is_write = 0;
	u32 map_index;
	u64 first_block, last_block;
	u32 block_cnt;
	u32 blocks_per_row;
	u64 first_row, last_row;
	u32 first_row_offset, last_row_offset;
	u32 first_column, last_column;
4998 4999 5000 5001 5002 5003 5004 5005
	u64 r0_first_row, r0_last_row;
	u32 r5or6_blocks_per_row;
	u64 r5or6_first_row, r5or6_last_row;
	u32 r5or6_first_row_offset, r5or6_last_row_offset;
	u32 r5or6_first_column, r5or6_last_column;
	u32 total_disks_per_row;
	u32 stripesize;
	u32 first_group, last_group, current_group;
5006 5007 5008 5009 5010 5011
	u32 map_row;
	u32 disk_handle;
	u64 disk_block;
	u32 disk_block_cnt;
	u8 cdb[16];
	u8 cdb_len;
D
Don Brace 已提交
5012
	u16 strip_size;
5013 5014 5015
#if BITS_PER_LONG == 32
	u64 tmpdiv;
#endif
5016
	int offload_to_mirror;
5017

5018 5019 5020
	if (!dev)
		return -1;

5021 5022 5023 5024 5025
	/* check for valid opcode, get LBA and block count */
	switch (cmd->cmnd[0]) {
	case WRITE_6:
		is_write = 1;
	case READ_6:
5026 5027 5028
		first_block = (((cmd->cmnd[1] & 0x1F) << 16) |
				(cmd->cmnd[2] << 8) |
				cmd->cmnd[3]);
5029
		block_cnt = cmd->cmnd[4];
5030 5031
		if (block_cnt == 0)
			block_cnt = 256;
5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044 5045 5046 5047 5048 5049 5050 5051 5052 5053 5054 5055 5056 5057 5058 5059 5060 5061 5062 5063 5064 5065 5066 5067 5068 5069 5070 5071 5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082 5083 5084 5085 5086
		break;
	case WRITE_10:
		is_write = 1;
	case READ_10:
		first_block =
			(((u64) cmd->cmnd[2]) << 24) |
			(((u64) cmd->cmnd[3]) << 16) |
			(((u64) cmd->cmnd[4]) << 8) |
			cmd->cmnd[5];
		block_cnt =
			(((u32) cmd->cmnd[7]) << 8) |
			cmd->cmnd[8];
		break;
	case WRITE_12:
		is_write = 1;
	case READ_12:
		first_block =
			(((u64) cmd->cmnd[2]) << 24) |
			(((u64) cmd->cmnd[3]) << 16) |
			(((u64) cmd->cmnd[4]) << 8) |
			cmd->cmnd[5];
		block_cnt =
			(((u32) cmd->cmnd[6]) << 24) |
			(((u32) cmd->cmnd[7]) << 16) |
			(((u32) cmd->cmnd[8]) << 8) |
		cmd->cmnd[9];
		break;
	case WRITE_16:
		is_write = 1;
	case READ_16:
		first_block =
			(((u64) cmd->cmnd[2]) << 56) |
			(((u64) cmd->cmnd[3]) << 48) |
			(((u64) cmd->cmnd[4]) << 40) |
			(((u64) cmd->cmnd[5]) << 32) |
			(((u64) cmd->cmnd[6]) << 24) |
			(((u64) cmd->cmnd[7]) << 16) |
			(((u64) cmd->cmnd[8]) << 8) |
			cmd->cmnd[9];
		block_cnt =
			(((u32) cmd->cmnd[10]) << 24) |
			(((u32) cmd->cmnd[11]) << 16) |
			(((u32) cmd->cmnd[12]) << 8) |
			cmd->cmnd[13];
		break;
	default:
		return IO_ACCEL_INELIGIBLE; /* process via normal I/O path */
	}
	last_block = first_block + block_cnt - 1;

	/* check for write to non-RAID-0 */
	if (is_write && dev->raid_level != 0)
		return IO_ACCEL_INELIGIBLE;

	/* check for invalid block or wraparound */
D
Don Brace 已提交
5087 5088
	if (last_block >= le64_to_cpu(map->volume_blk_cnt) ||
		last_block < first_block)
5089 5090 5091
		return IO_ACCEL_INELIGIBLE;

	/* calculate stripe information for the request */
D
Don Brace 已提交
5092 5093 5094
	blocks_per_row = le16_to_cpu(map->data_disks_per_row) *
				le16_to_cpu(map->strip_size);
	strip_size = le16_to_cpu(map->strip_size);
5095 5096 5097 5098 5099 5100 5101 5102 5103 5104
#if BITS_PER_LONG == 32
	tmpdiv = first_block;
	(void) do_div(tmpdiv, blocks_per_row);
	first_row = tmpdiv;
	tmpdiv = last_block;
	(void) do_div(tmpdiv, blocks_per_row);
	last_row = tmpdiv;
	first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
	last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
	tmpdiv = first_row_offset;
D
Don Brace 已提交
5105
	(void) do_div(tmpdiv, strip_size);
5106 5107
	first_column = tmpdiv;
	tmpdiv = last_row_offset;
D
Don Brace 已提交
5108
	(void) do_div(tmpdiv, strip_size);
5109 5110 5111 5112 5113 5114
	last_column = tmpdiv;
#else
	first_row = first_block / blocks_per_row;
	last_row = last_block / blocks_per_row;
	first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
	last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
D
Don Brace 已提交
5115 5116
	first_column = first_row_offset / strip_size;
	last_column = last_row_offset / strip_size;
5117 5118 5119 5120 5121 5122 5123
#endif

	/* if this isn't a single row/column then give to the controller */
	if ((first_row != last_row) || (first_column != last_column))
		return IO_ACCEL_INELIGIBLE;

	/* proceeding with driver mapping */
D
Don Brace 已提交
5124 5125
	total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
				le16_to_cpu(map->metadata_disks_per_row);
5126
	map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
D
Don Brace 已提交
5127
				le16_to_cpu(map->row_cnt);
5128 5129 5130 5131 5132 5133 5134 5135 5136
	map_index = (map_row * total_disks_per_row) + first_column;

	switch (dev->raid_level) {
	case HPSA_RAID_0:
		break; /* nothing special to do */
	case HPSA_RAID_1:
		/* Handles load balance across RAID 1 members.
		 * (2-drive R1 and R10 with even # of drives.)
		 * Appropriate for SSDs, not optimal for HDDs
5137
		 */
D
Don Brace 已提交
5138
		BUG_ON(le16_to_cpu(map->layout_map_count) != 2);
5139
		if (dev->offload_to_mirror)
D
Don Brace 已提交
5140
			map_index += le16_to_cpu(map->data_disks_per_row);
5141
		dev->offload_to_mirror = !dev->offload_to_mirror;
5142 5143 5144 5145 5146
		break;
	case HPSA_RAID_ADM:
		/* Handles N-way mirrors  (R1-ADM)
		 * and R10 with # of drives divisible by 3.)
		 */
D
Don Brace 已提交
5147
		BUG_ON(le16_to_cpu(map->layout_map_count) != 3);
5148 5149 5150 5151 5152 5153

		offload_to_mirror = dev->offload_to_mirror;
		raid_map_helper(map, offload_to_mirror,
				&map_index, &current_group);
		/* set mirror group to use next time */
		offload_to_mirror =
D
Don Brace 已提交
5154 5155
			(offload_to_mirror >=
			le16_to_cpu(map->layout_map_count) - 1)
5156 5157 5158 5159 5160 5161 5162 5163 5164
			? 0 : offload_to_mirror + 1;
		dev->offload_to_mirror = offload_to_mirror;
		/* Avoid direct use of dev->offload_to_mirror within this
		 * function since multiple threads might simultaneously
		 * increment it beyond the range of dev->layout_map_count -1.
		 */
		break;
	case HPSA_RAID_5:
	case HPSA_RAID_6:
D
Don Brace 已提交
5165
		if (le16_to_cpu(map->layout_map_count) <= 1)
5166 5167 5168 5169
			break;

		/* Verify first and last block are in same RAID group */
		r5or6_blocks_per_row =
D
Don Brace 已提交
5170 5171
			le16_to_cpu(map->strip_size) *
			le16_to_cpu(map->data_disks_per_row);
5172
		BUG_ON(r5or6_blocks_per_row == 0);
D
Don Brace 已提交
5173 5174
		stripesize = r5or6_blocks_per_row *
			le16_to_cpu(map->layout_map_count);
5175 5176 5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187 5188 5189
#if BITS_PER_LONG == 32
		tmpdiv = first_block;
		first_group = do_div(tmpdiv, stripesize);
		tmpdiv = first_group;
		(void) do_div(tmpdiv, r5or6_blocks_per_row);
		first_group = tmpdiv;
		tmpdiv = last_block;
		last_group = do_div(tmpdiv, stripesize);
		tmpdiv = last_group;
		(void) do_div(tmpdiv, r5or6_blocks_per_row);
		last_group = tmpdiv;
#else
		first_group = (first_block % stripesize) / r5or6_blocks_per_row;
		last_group = (last_block % stripesize) / r5or6_blocks_per_row;
#endif
5190
		if (first_group != last_group)
5191 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221 5222 5223 5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236
			return IO_ACCEL_INELIGIBLE;

		/* Verify request is in a single row of RAID 5/6 */
#if BITS_PER_LONG == 32
		tmpdiv = first_block;
		(void) do_div(tmpdiv, stripesize);
		first_row = r5or6_first_row = r0_first_row = tmpdiv;
		tmpdiv = last_block;
		(void) do_div(tmpdiv, stripesize);
		r5or6_last_row = r0_last_row = tmpdiv;
#else
		first_row = r5or6_first_row = r0_first_row =
						first_block / stripesize;
		r5or6_last_row = r0_last_row = last_block / stripesize;
#endif
		if (r5or6_first_row != r5or6_last_row)
			return IO_ACCEL_INELIGIBLE;


		/* Verify request is in a single column */
#if BITS_PER_LONG == 32
		tmpdiv = first_block;
		first_row_offset = do_div(tmpdiv, stripesize);
		tmpdiv = first_row_offset;
		first_row_offset = (u32) do_div(tmpdiv, r5or6_blocks_per_row);
		r5or6_first_row_offset = first_row_offset;
		tmpdiv = last_block;
		r5or6_last_row_offset = do_div(tmpdiv, stripesize);
		tmpdiv = r5or6_last_row_offset;
		r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
		tmpdiv = r5or6_first_row_offset;
		(void) do_div(tmpdiv, map->strip_size);
		first_column = r5or6_first_column = tmpdiv;
		tmpdiv = r5or6_last_row_offset;
		(void) do_div(tmpdiv, map->strip_size);
		r5or6_last_column = tmpdiv;
#else
		first_row_offset = r5or6_first_row_offset =
			(u32)((first_block % stripesize) %
						r5or6_blocks_per_row);

		r5or6_last_row_offset =
			(u32)((last_block % stripesize) %
						r5or6_blocks_per_row);

		first_column = r5or6_first_column =
D
Don Brace 已提交
5237
			r5or6_first_row_offset / le16_to_cpu(map->strip_size);
5238
		r5or6_last_column =
D
Don Brace 已提交
5239
			r5or6_last_row_offset / le16_to_cpu(map->strip_size);
5240 5241 5242 5243 5244 5245
#endif
		if (r5or6_first_column != r5or6_last_column)
			return IO_ACCEL_INELIGIBLE;

		/* Request is eligible */
		map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
D
Don Brace 已提交
5246
			le16_to_cpu(map->row_cnt);
5247 5248

		map_index = (first_group *
D
Don Brace 已提交
5249
			(le16_to_cpu(map->row_cnt) * total_disks_per_row)) +
5250 5251 5252 5253
			(map_row * total_disks_per_row) + first_column;
		break;
	default:
		return IO_ACCEL_INELIGIBLE;
5254
	}
5255

5256 5257 5258
	if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
		return IO_ACCEL_INELIGIBLE;

5259
	c->phys_disk = dev->phys_disk[map_index];
5260 5261
	if (!c->phys_disk)
		return IO_ACCEL_INELIGIBLE;
5262

5263
	disk_handle = dd[map_index].ioaccel_handle;
D
Don Brace 已提交
5264 5265 5266 5267
	disk_block = le64_to_cpu(map->disk_starting_blk) +
			first_row * le16_to_cpu(map->strip_size) +
			(first_row_offset - first_column *
			le16_to_cpu(map->strip_size));
5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284 5285 5286 5287 5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298 5299 5300 5301 5302 5303 5304 5305 5306 5307 5308 5309
	disk_block_cnt = block_cnt;

	/* handle differing logical/physical block sizes */
	if (map->phys_blk_shift) {
		disk_block <<= map->phys_blk_shift;
		disk_block_cnt <<= map->phys_blk_shift;
	}
	BUG_ON(disk_block_cnt > 0xffff);

	/* build the new CDB for the physical disk I/O */
	if (disk_block > 0xffffffff) {
		cdb[0] = is_write ? WRITE_16 : READ_16;
		cdb[1] = 0;
		cdb[2] = (u8) (disk_block >> 56);
		cdb[3] = (u8) (disk_block >> 48);
		cdb[4] = (u8) (disk_block >> 40);
		cdb[5] = (u8) (disk_block >> 32);
		cdb[6] = (u8) (disk_block >> 24);
		cdb[7] = (u8) (disk_block >> 16);
		cdb[8] = (u8) (disk_block >> 8);
		cdb[9] = (u8) (disk_block);
		cdb[10] = (u8) (disk_block_cnt >> 24);
		cdb[11] = (u8) (disk_block_cnt >> 16);
		cdb[12] = (u8) (disk_block_cnt >> 8);
		cdb[13] = (u8) (disk_block_cnt);
		cdb[14] = 0;
		cdb[15] = 0;
		cdb_len = 16;
	} else {
		cdb[0] = is_write ? WRITE_10 : READ_10;
		cdb[1] = 0;
		cdb[2] = (u8) (disk_block >> 24);
		cdb[3] = (u8) (disk_block >> 16);
		cdb[4] = (u8) (disk_block >> 8);
		cdb[5] = (u8) (disk_block);
		cdb[6] = 0;
		cdb[7] = (u8) (disk_block_cnt >> 8);
		cdb[8] = (u8) (disk_block_cnt);
		cdb[9] = 0;
		cdb_len = 10;
	}
	return hpsa_scsi_ioaccel_queue_command(h, c, disk_handle, cdb, cdb_len,
5310 5311
						dev->scsi3addr,
						dev->phys_disk[map_index]);
5312 5313
}

5314 5315 5316 5317 5318
/*
 * Submit commands down the "normal" RAID stack path
 * All callers to hpsa_ciss_submit must check lockup_detected
 * beforehand, before (opt.) and after calling cmd_alloc
 */
5319 5320 5321
static int hpsa_ciss_submit(struct ctlr_info *h,
	struct CommandList *c, struct scsi_cmnd *cmd,
	unsigned char scsi3addr[])
5322 5323 5324 5325 5326 5327
{
	cmd->host_scribble = (unsigned char *) c;
	c->cmd_type = CMD_SCSI;
	c->scsi_cmd = cmd;
	c->Header.ReplyQueue = 0;  /* unused in simple mode */
	memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8);
5328
	c->Header.tag = cpu_to_le64((c->cmdindex << DIRECT_LOOKUP_SHIFT));
5329 5330 5331 5332 5333 5334 5335 5336 5337

	/* Fill in the request block... */

	c->Request.Timeout = 0;
	BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
	c->Request.CDBLen = cmd->cmd_len;
	memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
	switch (cmd->sc_data_direction) {
	case DMA_TO_DEVICE:
5338 5339
		c->Request.type_attr_dir =
			TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_WRITE);
5340 5341
		break;
	case DMA_FROM_DEVICE:
5342 5343
		c->Request.type_attr_dir =
			TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_READ);
5344 5345
		break;
	case DMA_NONE:
5346 5347
		c->Request.type_attr_dir =
			TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_NONE);
5348 5349 5350 5351 5352 5353 5354
		break;
	case DMA_BIDIRECTIONAL:
		/* This can happen if a buggy application does a scsi passthru
		 * and sets both inlen and outlen to non-zero. ( see
		 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
		 */

5355 5356
		c->Request.type_attr_dir =
			TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_RSVD);
5357 5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373
		/* This is technically wrong, and hpsa controllers should
		 * reject it with CMD_INVALID, which is the most correct
		 * response, but non-fibre backends appear to let it
		 * slide by, and give the same results as if this field
		 * were set correctly.  Either way is acceptable for
		 * our purposes here.
		 */

		break;

	default:
		dev_err(&h->pdev->dev, "unknown data direction: %d\n",
			cmd->sc_data_direction);
		BUG();
		break;
	}

5374
	if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */
5375
		hpsa_cmd_resolve_and_free(h, c);
5376 5377 5378 5379 5380 5381 5382
		return SCSI_MLQUEUE_HOST_BUSY;
	}
	enqueue_cmd_and_start_io(h, c);
	/* the cmd'll come back via intr handler in complete_scsi_command()  */
	return 0;
}

5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 5394 5395 5396 5397 5398 5399 5400
static void hpsa_cmd_init(struct ctlr_info *h, int index,
				struct CommandList *c)
{
	dma_addr_t cmd_dma_handle, err_dma_handle;

	/* Zero out all of commandlist except the last field, refcount */
	memset(c, 0, offsetof(struct CommandList, refcount));
	c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT));
	cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
	c->err_info = h->errinfo_pool + index;
	memset(c->err_info, 0, sizeof(*c->err_info));
	err_dma_handle = h->errinfo_pool_dhandle
	    + index * sizeof(*c->err_info);
	c->cmdindex = index;
	c->busaddr = (u32) cmd_dma_handle;
	c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle);
	c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info));
	c->h = h;
5401
	c->scsi_cmd = SCSI_CMD_IDLE;
5402 5403 5404 5405 5406 5407 5408 5409 5410 5411 5412 5413 5414 5415 5416 5417 5418 5419 5420
}

static void hpsa_preinitialize_commands(struct ctlr_info *h)
{
	int i;

	for (i = 0; i < h->nr_cmds; i++) {
		struct CommandList *c = h->cmd_pool + i;

		hpsa_cmd_init(h, i, c);
		atomic_set(&c->refcount, 0);
	}
}

static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index,
				struct CommandList *c)
{
	dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);

5421 5422
	BUG_ON(c->cmdindex != index);

5423 5424 5425 5426 5427
	memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
	memset(c->err_info, 0, sizeof(*c->err_info));
	c->busaddr = (u32) cmd_dma_handle;
}

5428 5429 5430 5431 5432 5433 5434
static int hpsa_ioaccel_submit(struct ctlr_info *h,
		struct CommandList *c, struct scsi_cmnd *cmd,
		unsigned char *scsi3addr)
{
	struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
	int rc = IO_ACCEL_INELIGIBLE;

5435 5436 5437
	if (!dev)
		return SCSI_MLQUEUE_HOST_BUSY;

5438 5439 5440 5441 5442 5443 5444 5445 5446
	cmd->host_scribble = (unsigned char *) c;

	if (dev->offload_enabled) {
		hpsa_cmd_init(h, c->cmdindex, c);
		c->cmd_type = CMD_SCSI;
		c->scsi_cmd = cmd;
		rc = hpsa_scsi_ioaccel_raid_map(h, c);
		if (rc < 0)     /* scsi_dma_map failed. */
			rc = SCSI_MLQUEUE_HOST_BUSY;
5447
	} else if (dev->hba_ioaccel_enabled) {
5448 5449 5450 5451 5452 5453 5454 5455 5456 5457
		hpsa_cmd_init(h, c->cmdindex, c);
		c->cmd_type = CMD_SCSI;
		c->scsi_cmd = cmd;
		rc = hpsa_scsi_ioaccel_direct_map(h, c);
		if (rc < 0)     /* scsi_dma_map failed. */
			rc = SCSI_MLQUEUE_HOST_BUSY;
	}
	return rc;
}

5458 5459 5460 5461
static void hpsa_command_resubmit_worker(struct work_struct *work)
{
	struct scsi_cmnd *cmd;
	struct hpsa_scsi_dev_t *dev;
5462
	struct CommandList *c = container_of(work, struct CommandList, work);
5463 5464 5465 5466 5467

	cmd = c->scsi_cmd;
	dev = cmd->device->hostdata;
	if (!dev) {
		cmd->result = DID_NO_CONNECT << 16;
5468
		return hpsa_cmd_free_and_done(c->h, c, cmd);
5469
	}
W
Webb Scales 已提交
5470
	if (c->reset_pending)
5471
		return hpsa_cmd_free_and_done(c->h, c, cmd);
5472 5473
	if (c->abort_pending)
		return hpsa_cmd_abort_and_free(c->h, c, cmd);
5474 5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485 5486 5487 5488 5489 5490
	if (c->cmd_type == CMD_IOACCEL2) {
		struct ctlr_info *h = c->h;
		struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
		int rc;

		if (c2->error_data.serv_response ==
				IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) {
			rc = hpsa_ioaccel_submit(h, c, cmd, dev->scsi3addr);
			if (rc == 0)
				return;
			if (rc == SCSI_MLQUEUE_HOST_BUSY) {
				/*
				 * If we get here, it means dma mapping failed.
				 * Try again via scsi mid layer, which will
				 * then get SCSI_MLQUEUE_HOST_BUSY.
				 */
				cmd->result = DID_IMM_RETRY << 16;
5491
				return hpsa_cmd_free_and_done(h, c, cmd);
5492 5493 5494 5495
			}
			/* else, fall thru and resubmit down CISS path */
		}
	}
5496
	hpsa_cmd_partial_init(c->h, c->cmdindex, c);
5497 5498 5499 5500 5501
	if (hpsa_ciss_submit(c->h, c, cmd, dev->scsi3addr)) {
		/*
		 * If we get here, it means dma mapping failed. Try
		 * again via scsi mid layer, which will then get
		 * SCSI_MLQUEUE_HOST_BUSY.
5502 5503 5504
		 *
		 * hpsa_ciss_submit will have already freed c
		 * if it encountered a dma mapping failure.
5505 5506 5507 5508 5509 5510
		 */
		cmd->result = DID_IMM_RETRY << 16;
		cmd->scsi_done(cmd);
	}
}

5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521
/* Running in struct Scsi_Host->host_lock less mode */
static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
{
	struct ctlr_info *h;
	struct hpsa_scsi_dev_t *dev;
	unsigned char scsi3addr[8];
	struct CommandList *c;
	int rc = 0;

	/* Get the ptr to our adapter structure out of cmd->host. */
	h = sdev_to_hba(cmd->device);
5522 5523 5524

	BUG_ON(cmd->request->tag < 0);

5525 5526
	dev = cmd->device->hostdata;
	if (!dev) {
5527
		cmd->result = DID_NO_CONNECT << 16;
5528 5529 5530 5531 5532
		cmd->scsi_done(cmd);
		return 0;
	}

	if (dev->removed) {
5533 5534 5535 5536 5537
		cmd->result = DID_NO_CONNECT << 16;
		cmd->scsi_done(cmd);
		return 0;
	}

5538
	memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr));
5539

5540
	if (unlikely(lockup_detected(h))) {
5541
		cmd->result = DID_NO_CONNECT << 16;
5542 5543 5544
		cmd->scsi_done(cmd);
		return 0;
	}
5545
	c = cmd_tagged_alloc(h, cmd);
5546

5547 5548
	/*
	 * Call alternate submit routine for I/O accelerated commands.
5549 5550 5551
	 * Retries always go down the normal I/O path.
	 */
	if (likely(cmd->retries == 0 &&
5552 5553
			!blk_rq_is_passthrough(cmd->request) &&
			h->acciopath_status)) {
5554 5555 5556 5557
		rc = hpsa_ioaccel_submit(h, c, cmd, scsi3addr);
		if (rc == 0)
			return 0;
		if (rc == SCSI_MLQUEUE_HOST_BUSY) {
5558
			hpsa_cmd_resolve_and_free(h, c);
5559
			return SCSI_MLQUEUE_HOST_BUSY;
5560 5561 5562 5563 5564
		}
	}
	return hpsa_ciss_submit(h, c, cmd, scsi3addr);
}

5565
static void hpsa_scan_complete(struct ctlr_info *h)
5566 5567 5568
{
	unsigned long flags;

5569 5570
	spin_lock_irqsave(&h->scan_lock, flags);
	h->scan_finished = 1;
5571
	wake_up(&h->scan_wait_queue);
5572
	spin_unlock_irqrestore(&h->scan_lock, flags);
5573 5574
}

5575 5576 5577 5578 5579
static void hpsa_scan_start(struct Scsi_Host *sh)
{
	struct ctlr_info *h = shost_to_hba(sh);
	unsigned long flags;

5580 5581 5582 5583 5584 5585 5586 5587
	/*
	 * Don't let rescans be initiated on a controller known to be locked
	 * up.  If the controller locks up *during* a rescan, that thread is
	 * probably hosed, but at least we can prevent new rescan threads from
	 * piling up on a locked up controller.
	 */
	if (unlikely(lockup_detected(h)))
		return hpsa_scan_complete(h);
5588

5589 5590 5591 5592 5593 5594 5595 5596 5597 5598 5599
	/*
	 * If a scan is already waiting to run, no need to add another
	 */
	spin_lock_irqsave(&h->scan_lock, flags);
	if (h->scan_waiting) {
		spin_unlock_irqrestore(&h->scan_lock, flags);
		return;
	}

	spin_unlock_irqrestore(&h->scan_lock, flags);

5600 5601 5602 5603 5604
	/* wait until any scan already in progress is finished. */
	while (1) {
		spin_lock_irqsave(&h->scan_lock, flags);
		if (h->scan_finished)
			break;
5605
		h->scan_waiting = 1;
5606 5607 5608 5609 5610 5611 5612 5613 5614
		spin_unlock_irqrestore(&h->scan_lock, flags);
		wait_event(h->scan_wait_queue, h->scan_finished);
		/* Note: We don't need to worry about a race between this
		 * thread and driver unload because the midlayer will
		 * have incremented the reference count, so unload won't
		 * happen if we're in here.
		 */
	}
	h->scan_finished = 0; /* mark scan as in progress */
5615
	h->scan_waiting = 0;
5616 5617
	spin_unlock_irqrestore(&h->scan_lock, flags);

5618 5619
	if (unlikely(lockup_detected(h)))
		return hpsa_scan_complete(h);
5620

D
Don Brace 已提交
5621 5622 5623
	/*
	 * Do the scan after a reset completion
	 */
D
Don Brace 已提交
5624
	spin_lock_irqsave(&h->reset_lock, flags);
D
Don Brace 已提交
5625 5626
	if (h->reset_in_progress) {
		h->drv_req_rescan = 1;
D
Don Brace 已提交
5627
		spin_unlock_irqrestore(&h->reset_lock, flags);
5628
		hpsa_scan_complete(h);
D
Don Brace 已提交
5629 5630
		return;
	}
D
Don Brace 已提交
5631
	spin_unlock_irqrestore(&h->reset_lock, flags);
D
Don Brace 已提交
5632

D
Don Brace 已提交
5633
	hpsa_update_scsi_devices(h);
5634

5635
	hpsa_scan_complete(h);
5636 5637
}

D
Don Brace 已提交
5638 5639
static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth)
{
5640 5641 5642 5643
	struct hpsa_scsi_dev_t *logical_drive = sdev->hostdata;

	if (!logical_drive)
		return -ENODEV;
D
Don Brace 已提交
5644 5645 5646

	if (qdepth < 1)
		qdepth = 1;
5647 5648 5649 5650
	else if (qdepth > logical_drive->queue_depth)
		qdepth = logical_drive->queue_depth;

	return scsi_change_queue_depth(sdev, qdepth);
D
Don Brace 已提交
5651 5652
}

5653 5654 5655 5656 5657 5658 5659 5660 5661 5662 5663 5664 5665
static int hpsa_scan_finished(struct Scsi_Host *sh,
	unsigned long elapsed_time)
{
	struct ctlr_info *h = shost_to_hba(sh);
	unsigned long flags;
	int finished;

	spin_lock_irqsave(&h->scan_lock, flags);
	finished = h->scan_finished;
	spin_unlock_irqrestore(&h->scan_lock, flags);
	return finished;
}

5666
static int hpsa_scsi_host_alloc(struct ctlr_info *h)
5667
{
5668
	struct Scsi_Host *sh;
5669

5670
	sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
5671 5672 5673 5674
	if (sh == NULL) {
		dev_err(&h->pdev->dev, "scsi_host_alloc failed\n");
		return -ENOMEM;
	}
5675 5676 5677 5678 5679 5680 5681 5682

	sh->io_port = 0;
	sh->n_io_port = 0;
	sh->this_id = -1;
	sh->max_channel = 3;
	sh->max_cmd_len = MAX_COMMAND_SIZE;
	sh->max_lun = HPSA_MAX_LUN;
	sh->max_id = HPSA_MAX_LUN;
5683
	sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS;
5684
	sh->cmd_per_lun = sh->can_queue;
5685
	sh->sg_tablesize = h->maxsgentries;
K
Kevin Barnett 已提交
5686
	sh->transportt = hpsa_sas_transport_template;
5687
	sh->hostdata[0] = (unsigned long) h;
5688
	sh->irq = pci_irq_vector(h->pdev, 0);
5689
	sh->unique_id = sh->irq;
5690

5691
	h->scsi_host = sh;
5692
	return 0;
5693
}
5694

5695 5696 5697 5698 5699 5700 5701 5702 5703 5704 5705
static int hpsa_scsi_add_host(struct ctlr_info *h)
{
	int rv;

	rv = scsi_add_host(h->scsi_host, &h->pdev->dev);
	if (rv) {
		dev_err(&h->pdev->dev, "scsi_add_host failed\n");
		return rv;
	}
	scsi_scan_host(h->scsi_host);
	return 0;
5706 5707
}

5708 5709 5710 5711 5712 5713 5714 5715 5716 5717 5718 5719 5720 5721 5722 5723 5724
/*
 * The block layer has already gone to the trouble of picking out a unique,
 * small-integer tag for this request.  We use an offset from that value as
 * an index to select our command block.  (The offset allows us to reserve the
 * low-numbered entries for our own uses.)
 */
static int hpsa_get_cmd_index(struct scsi_cmnd *scmd)
{
	int idx = scmd->request->tag;

	if (idx < 0)
		return idx;

	/* Offset to leave space for internal cmds. */
	return idx += HPSA_NRESERVED_CMDS;
}

5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737
/*
 * Send a TEST_UNIT_READY command to the specified LUN using the specified
 * reply queue; returns zero if the unit is ready, and non-zero otherwise.
 */
static int hpsa_send_test_unit_ready(struct ctlr_info *h,
				struct CommandList *c, unsigned char lunaddr[],
				int reply_queue)
{
	int rc;

	/* Send the Test Unit Ready, fill_cmd can't fail, no mapping */
	(void) fill_cmd(c, TEST_UNIT_READY, h,
			NULL, 0, 0, lunaddr, TYPE_CMD);
5738
	rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, DEFAULT_TIMEOUT);
5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755 5756 5757 5758 5759 5760 5761 5762 5763 5764 5765 5766 5767
	if (rc)
		return rc;
	/* no unmap needed here because no data xfer. */

	/* Check if the unit is already ready. */
	if (c->err_info->CommandStatus == CMD_SUCCESS)
		return 0;

	/*
	 * The first command sent after reset will receive "unit attention" to
	 * indicate that the LUN has been reset...this is actually what we're
	 * looking for (but, success is good too).
	 */
	if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
		c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
			(c->err_info->SenseInfo[2] == NO_SENSE ||
			 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
		return 0;

	return 1;
}

/*
 * Wait for a TEST_UNIT_READY command to complete, retrying as necessary;
 * returns zero when the unit is ready, and non-zero when giving up.
 */
static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h,
				struct CommandList *c,
				unsigned char lunaddr[], int reply_queue)
5768
{
5769
	int rc;
5770 5771 5772 5773
	int count = 0;
	int waittime = 1; /* seconds */

	/* Send test unit ready until device ready, or give up. */
5774
	for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) {
5775

5776 5777
		/*
		 * Wait for a bit.  do this first, because if we send
5778 5779 5780
		 * the TUR right away, the reset will just abort it.
		 */
		msleep(1000 * waittime);
5781 5782 5783 5784

		rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue);
		if (!rc)
			break;
5785 5786 5787

		/* Increase wait time with each try, up to a point. */
		if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
5788
			waittime *= 2;
5789

5790 5791 5792 5793
		dev_warn(&h->pdev->dev,
			 "waiting %d secs for device to become ready.\n",
			 waittime);
	}
5794

5795 5796
	return rc;
}
5797

5798 5799 5800 5801 5802 5803 5804 5805 5806 5807 5808 5809 5810 5811 5812 5813 5814 5815 5816 5817 5818 5819 5820 5821 5822 5823 5824 5825
static int wait_for_device_to_become_ready(struct ctlr_info *h,
					   unsigned char lunaddr[],
					   int reply_queue)
{
	int first_queue;
	int last_queue;
	int rq;
	int rc = 0;
	struct CommandList *c;

	c = cmd_alloc(h);

	/*
	 * If no specific reply queue was requested, then send the TUR
	 * repeatedly, requesting a reply on each reply queue; otherwise execute
	 * the loop exactly once using only the specified queue.
	 */
	if (reply_queue == DEFAULT_REPLY_QUEUE) {
		first_queue = 0;
		last_queue = h->nreply_queues - 1;
	} else {
		first_queue = reply_queue;
		last_queue = reply_queue;
	}

	for (rq = first_queue; rq <= last_queue; rq++) {
		rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq);
		if (rc)
5826 5827 5828 5829 5830 5831 5832 5833
			break;
	}

	if (rc)
		dev_warn(&h->pdev->dev, "giving up on device.\n");
	else
		dev_warn(&h->pdev->dev, "device is ready.\n");

5834
	cmd_free(h, c);
5835 5836 5837 5838 5839 5840 5841 5842
	return rc;
}

/* Need at least one of these error handlers to keep ../scsi/hosts.c from
 * complaining.  Doing a host- or bus-reset can't do anything good here.
 */
static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
{
D
Don Brace 已提交
5843
	int rc = SUCCESS;
5844 5845
	struct ctlr_info *h;
	struct hpsa_scsi_dev_t *dev;
S
Scott Teel 已提交
5846
	u8 reset_type;
5847
	char msg[48];
D
Don Brace 已提交
5848
	unsigned long flags;
5849 5850 5851 5852 5853

	/* find the controller to which the command to be aborted was sent */
	h = sdev_to_hba(scsicmd->device);
	if (h == NULL) /* paranoia */
		return FAILED;
5854

D
Don Brace 已提交
5855 5856 5857 5858 5859 5860 5861 5862
	spin_lock_irqsave(&h->reset_lock, flags);
	h->reset_in_progress = 1;
	spin_unlock_irqrestore(&h->reset_lock, flags);

	if (lockup_detected(h)) {
		rc = FAILED;
		goto return_reset_status;
	}
5863

5864 5865
	dev = scsicmd->device->hostdata;
	if (!dev) {
W
Webb Scales 已提交
5866
		dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__);
D
Don Brace 已提交
5867 5868
		rc = FAILED;
		goto return_reset_status;
5869
	}
5870

D
Don Brace 已提交
5871 5872 5873 5874
	if (dev->devtype == TYPE_ENCLOSURE) {
		rc = SUCCESS;
		goto return_reset_status;
	}
D
Don Brace 已提交
5875

5876 5877
	/* if controller locked up, we can guarantee command won't complete */
	if (lockup_detected(h)) {
5878 5879 5880
		snprintf(msg, sizeof(msg),
			 "cmd %d RESET FAILED, lockup detected",
			 hpsa_get_cmd_index(scsicmd));
5881
		hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
D
Don Brace 已提交
5882 5883
		rc = FAILED;
		goto return_reset_status;
5884 5885 5886 5887
	}

	/* this reset request might be the result of a lockup; check */
	if (detect_controller_lockup(h)) {
5888 5889 5890
		snprintf(msg, sizeof(msg),
			 "cmd %d RESET FAILED, new lockup detected",
			 hpsa_get_cmd_index(scsicmd));
5891
		hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
D
Don Brace 已提交
5892 5893
		rc = FAILED;
		goto return_reset_status;
5894 5895
	}

W
Webb Scales 已提交
5896
	/* Do not attempt on controller */
D
Don Brace 已提交
5897 5898 5899 5900
	if (is_hba_lunid(dev->scsi3addr)) {
		rc = SUCCESS;
		goto return_reset_status;
	}
W
Webb Scales 已提交
5901

S
Scott Teel 已提交
5902 5903 5904 5905 5906 5907 5908 5909
	if (is_logical_dev_addr_mode(dev->scsi3addr))
		reset_type = HPSA_DEVICE_RESET_MSG;
	else
		reset_type = HPSA_PHYS_TARGET_RESET;

	sprintf(msg, "resetting %s",
		reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ");
	hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5910

5911
	/* send a reset to the SCSI LUN which the command was sent to */
S
Scott Teel 已提交
5912
	rc = hpsa_do_reset(h, dev, dev->scsi3addr, reset_type,
W
Webb Scales 已提交
5913
			   DEFAULT_REPLY_QUEUE);
D
Don Brace 已提交
5914 5915 5916 5917 5918
	if (rc == 0)
		rc = SUCCESS;
	else
		rc = FAILED;

S
Scott Teel 已提交
5919 5920
	sprintf(msg, "reset %s %s",
		reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ",
D
Don Brace 已提交
5921
		rc == SUCCESS ? "completed successfully" : "failed");
W
Webb Scales 已提交
5922
	hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
D
Don Brace 已提交
5923 5924 5925

return_reset_status:
	spin_lock_irqsave(&h->reset_lock, flags);
D
Don Brace 已提交
5926
	h->reset_in_progress = 0;
D
Don Brace 已提交
5927 5928
	spin_unlock_irqrestore(&h->reset_lock, flags);
	return rc;
5929 5930
}

5931 5932 5933 5934 5935 5936 5937 5938 5939 5940 5941 5942 5943 5944 5945
static void swizzle_abort_tag(u8 *tag)
{
	u8 original_tag[8];

	memcpy(original_tag, tag, 8);
	tag[0] = original_tag[3];
	tag[1] = original_tag[2];
	tag[2] = original_tag[1];
	tag[3] = original_tag[0];
	tag[4] = original_tag[7];
	tag[5] = original_tag[6];
	tag[6] = original_tag[5];
	tag[7] = original_tag[4];
}

5946
static void hpsa_get_tag(struct ctlr_info *h,
D
Don Brace 已提交
5947
	struct CommandList *c, __le32 *taglower, __le32 *tagupper)
5948
{
D
Don Brace 已提交
5949
	u64 tag;
5950 5951 5952
	if (c->cmd_type == CMD_IOACCEL1) {
		struct io_accel1_cmd *cm1 = (struct io_accel1_cmd *)
			&h->ioaccel_cmd_pool[c->cmdindex];
D
Don Brace 已提交
5953 5954 5955
		tag = le64_to_cpu(cm1->tag);
		*tagupper = cpu_to_le32(tag >> 32);
		*taglower = cpu_to_le32(tag);
5956 5957 5958 5959 5960
		return;
	}
	if (c->cmd_type == CMD_IOACCEL2) {
		struct io_accel2_cmd *cm2 = (struct io_accel2_cmd *)
			&h->ioaccel2_cmd_pool[c->cmdindex];
5961 5962 5963
		/* upper tag not used in ioaccel2 mode */
		memset(tagupper, 0, sizeof(*tagupper));
		*taglower = cm2->Tag;
5964
		return;
5965
	}
D
Don Brace 已提交
5966 5967 5968
	tag = le64_to_cpu(c->Header.tag);
	*tagupper = cpu_to_le32(tag >> 32);
	*taglower = cpu_to_le32(tag);
5969 5970
}

5971
static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr,
S
Stephen Cameron 已提交
5972
	struct CommandList *abort, int reply_queue)
5973 5974 5975 5976
{
	int rc = IO_OK;
	struct CommandList *c;
	struct ErrorInfo *ei;
D
Don Brace 已提交
5977
	__le32 tagupper, taglower;
5978

5979
	c = cmd_alloc(h);
5980

5981
	/* fill_cmd can't fail here, no buffer to map */
S
Stephen Cameron 已提交
5982
	(void) fill_cmd(c, HPSA_ABORT_MSG, h, &abort->Header.tag,
5983
		0, 0, scsi3addr, TYPE_MSG);
S
Stephen Cameron 已提交
5984
	if (h->needs_abort_tags_swizzled)
5985
		swizzle_abort_tag(&c->Request.CDB[4]);
5986
	(void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, DEFAULT_TIMEOUT);
5987
	hpsa_get_tag(h, abort, &taglower, &tagupper);
5988
	dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: do_simple_cmd(abort) completed.\n",
5989
		__func__, tagupper, taglower);
5990 5991 5992 5993 5994 5995
	/* no unmap needed here because no data xfer. */

	ei = c->err_info;
	switch (ei->CommandStatus) {
	case CMD_SUCCESS:
		break;
5996 5997 5998
	case CMD_TMF_STATUS:
		rc = hpsa_evaluate_tmf_status(h, c);
		break;
5999 6000 6001 6002 6003
	case CMD_UNABORTABLE: /* Very common, don't make noise. */
		rc = -1;
		break;
	default:
		dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: interpreting error.\n",
6004
			__func__, tagupper, taglower);
6005
		hpsa_scsi_interpret_error(h, c);
6006 6007 6008
		rc = -1;
		break;
	}
6009
	cmd_free(h, c);
6010 6011
	dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n",
		__func__, tagupper, taglower);
6012 6013 6014
	return rc;
}

6015 6016 6017 6018 6019 6020 6021
static void setup_ioaccel2_abort_cmd(struct CommandList *c, struct ctlr_info *h,
	struct CommandList *command_to_abort, int reply_queue)
{
	struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
	struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
	struct io_accel2_cmd *c2a =
		&h->ioaccel2_cmd_pool[command_to_abort->cmdindex];
6022
	struct scsi_cmnd *scmd = command_to_abort->scsi_cmd;
6023 6024
	struct hpsa_scsi_dev_t *dev = scmd->device->hostdata;

6025 6026 6027
	if (!dev)
		return;

6028 6029 6030 6031 6032 6033 6034 6035 6036 6037 6038 6039
	/*
	 * We're overlaying struct hpsa_tmf_struct on top of something which
	 * was allocated as a struct io_accel2_cmd, so we better be sure it
	 * actually fits, and doesn't overrun the error info space.
	 */
	BUILD_BUG_ON(sizeof(struct hpsa_tmf_struct) >
			sizeof(struct io_accel2_cmd));
	BUG_ON(offsetof(struct io_accel2_cmd, error_data) <
			offsetof(struct hpsa_tmf_struct, error_len) +
				sizeof(ac->error_len));

	c->cmd_type = IOACCEL2_TMF;
6040 6041
	c->scsi_cmd = SCSI_CMD_BUSY;

6042 6043 6044 6045 6046 6047 6048 6049 6050 6051 6052 6053 6054 6055 6056 6057 6058 6059
	/* Adjust the DMA address to point to the accelerated command buffer */
	c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
				(c->cmdindex * sizeof(struct io_accel2_cmd));
	BUG_ON(c->busaddr & 0x0000007F);

	memset(ac, 0, sizeof(*c2)); /* yes this is correct */
	ac->iu_type = IOACCEL2_IU_TMF_TYPE;
	ac->reply_queue = reply_queue;
	ac->tmf = IOACCEL2_TMF_ABORT;
	ac->it_nexus = cpu_to_le32(dev->ioaccel_handle);
	memset(ac->lun_id, 0, sizeof(ac->lun_id));
	ac->tag = cpu_to_le64(c->cmdindex << DIRECT_LOOKUP_SHIFT);
	ac->abort_tag = cpu_to_le64(le32_to_cpu(c2a->Tag));
	ac->error_ptr = cpu_to_le64(c->busaddr +
			offsetof(struct io_accel2_cmd, error_data));
	ac->error_len = cpu_to_le32(sizeof(c2->error_data));
}

6060 6061 6062 6063 6064 6065 6066 6067
/* ioaccel2 path firmware cannot handle abort task requests.
 * Change abort requests to physical target reset, and send to the
 * address of the physical disk used for the ioaccel 2 command.
 * Return 0 on success (IO_OK)
 *	 -1 on failure
 */

static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h,
6068
	unsigned char *scsi3addr, struct CommandList *abort, int reply_queue)
6069 6070 6071 6072 6073 6074 6075 6076
{
	int rc = IO_OK;
	struct scsi_cmnd *scmd; /* scsi command within request being aborted */
	struct hpsa_scsi_dev_t *dev; /* device to which scsi cmd was sent */
	unsigned char phys_scsi3addr[8]; /* addr of phys disk with volume */
	unsigned char *psa = &phys_scsi3addr[0];

	/* Get a pointer to the hpsa logical device. */
6077
	scmd = abort->scsi_cmd;
6078 6079 6080 6081 6082 6083 6084
	dev = (struct hpsa_scsi_dev_t *)(scmd->device->hostdata);
	if (dev == NULL) {
		dev_warn(&h->pdev->dev,
			"Cannot abort: no device pointer for command.\n");
			return -1; /* not abortable */
	}

6085 6086
	if (h->raid_offload_debug > 0)
		dev_info(&h->pdev->dev,
6087
			"scsi %d:%d:%d:%d %s scsi3addr 0x%8phN\n",
6088
			h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
6089
			"Reset as abort", scsi3addr);
6090

6091 6092 6093 6094 6095 6096 6097 6098 6099 6100 6101 6102 6103
	if (!dev->offload_enabled) {
		dev_warn(&h->pdev->dev,
			"Can't abort: device is not operating in HP SSD Smart Path mode.\n");
		return -1; /* not abortable */
	}

	/* Incoming scsi3addr is logical addr. We need physical disk addr. */
	if (!hpsa_get_pdisk_of_ioaccel2(h, abort, psa)) {
		dev_warn(&h->pdev->dev, "Can't abort: Failed lookup of physical address.\n");
		return -1; /* not abortable */
	}

	/* send the reset */
6104 6105
	if (h->raid_offload_debug > 0)
		dev_info(&h->pdev->dev,
6106 6107
			"Reset as abort: Resetting physical device at scsi3addr 0x%8phN\n",
			psa);
6108
	rc = hpsa_do_reset(h, dev, psa, HPSA_PHYS_TARGET_RESET, reply_queue);
6109 6110
	if (rc != 0) {
		dev_warn(&h->pdev->dev,
6111 6112
			"Reset as abort: Failed on physical device at scsi3addr 0x%8phN\n",
			psa);
6113 6114 6115 6116
		return rc; /* failed to reset */
	}

	/* wait for device to recover */
6117
	if (wait_for_device_to_become_ready(h, psa, reply_queue) != 0) {
6118
		dev_warn(&h->pdev->dev,
6119 6120
			"Reset as abort: Failed: Device never recovered from reset: 0x%8phN\n",
			psa);
6121 6122 6123 6124 6125
		return -1;  /* failed to recover */
	}

	/* device recovered */
	dev_info(&h->pdev->dev,
6126 6127
		"Reset as abort: Device recovered from reset: scsi3addr 0x%8phN\n",
		psa);
6128 6129 6130 6131

	return rc; /* success */
}

6132 6133 6134 6135 6136 6137 6138 6139 6140 6141
static int hpsa_send_abort_ioaccel2(struct ctlr_info *h,
	struct CommandList *abort, int reply_queue)
{
	int rc = IO_OK;
	struct CommandList *c;
	__le32 taglower, tagupper;
	struct hpsa_scsi_dev_t *dev;
	struct io_accel2_cmd *c2;

	dev = abort->scsi_cmd->device->hostdata;
6142 6143 6144
	if (!dev)
		return -1;

6145 6146 6147 6148 6149 6150
	if (!dev->offload_enabled && !dev->hba_ioaccel_enabled)
		return -1;

	c = cmd_alloc(h);
	setup_ioaccel2_abort_cmd(c, h, abort, reply_queue);
	c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
6151
	(void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, DEFAULT_TIMEOUT);
6152 6153 6154 6155 6156 6157 6158 6159 6160 6161 6162 6163 6164 6165 6166 6167 6168 6169 6170 6171 6172 6173 6174 6175 6176 6177 6178 6179 6180 6181 6182 6183
	hpsa_get_tag(h, abort, &taglower, &tagupper);
	dev_dbg(&h->pdev->dev,
		"%s: Tag:0x%08x:%08x: do_simple_cmd(ioaccel2 abort) completed.\n",
		__func__, tagupper, taglower);
	/* no unmap needed here because no data xfer. */

	dev_dbg(&h->pdev->dev,
		"%s: Tag:0x%08x:%08x: abort service response = 0x%02x.\n",
		__func__, tagupper, taglower, c2->error_data.serv_response);
	switch (c2->error_data.serv_response) {
	case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
	case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
		rc = 0;
		break;
	case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
	case IOACCEL2_SERV_RESPONSE_FAILURE:
	case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
		rc = -1;
		break;
	default:
		dev_warn(&h->pdev->dev,
			"%s: Tag:0x%08x:%08x: unknown abort service response 0x%02x\n",
			__func__, tagupper, taglower,
			c2->error_data.serv_response);
		rc = -1;
	}
	cmd_free(h, c);
	dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n", __func__,
		tagupper, taglower);
	return rc;
}

6184
static int hpsa_send_abort_both_ways(struct ctlr_info *h,
6185
	struct hpsa_scsi_dev_t *dev, struct CommandList *abort, int reply_queue)
6186
{
6187 6188
	/*
	 * ioccelerator mode 2 commands should be aborted via the
6189
	 * accelerated path, since RAID path is unaware of these commands,
6190 6191
	 * but not all underlying firmware can handle abort TMF.
	 * Change abort to physical device reset when abort TMF is unsupported.
6192
	 */
6193
	if (abort->cmd_type == CMD_IOACCEL2) {
6194 6195
		if ((HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags) ||
			dev->physical_device)
6196 6197 6198
			return hpsa_send_abort_ioaccel2(h, abort,
						reply_queue);
		else
6199 6200
			return hpsa_send_reset_as_abort_ioaccel2(h,
							dev->scsi3addr,
6201
							abort, reply_queue);
6202
	}
6203
	return hpsa_send_abort(h, dev->scsi3addr, abort, reply_queue);
6204
}
6205

6206 6207 6208 6209 6210 6211 6212
/* Find out which reply queue a command was meant to return on */
static int hpsa_extract_reply_queue(struct ctlr_info *h,
					struct CommandList *c)
{
	if (c->cmd_type == CMD_IOACCEL2)
		return h->ioaccel2_cmd_pool[c->cmdindex].reply_queue;
	return c->Header.ReplyQueue;
6213 6214
}

S
Stephen Cameron 已提交
6215 6216 6217 6218 6219 6220 6221 6222 6223 6224 6225 6226
/*
 * Limit concurrency of abort commands to prevent
 * over-subscription of commands
 */
static inline int wait_for_available_abort_cmd(struct ctlr_info *h)
{
#define ABORT_CMD_WAIT_MSECS 5000
	return !wait_event_timeout(h->abort_cmd_wait_queue,
			atomic_dec_if_positive(&h->abort_cmds_available) >= 0,
			msecs_to_jiffies(ABORT_CMD_WAIT_MSECS));
}

6227 6228 6229 6230 6231 6232 6233
/* Send an abort for the specified command.
 *	If the device and controller support it,
 *		send a task abort request.
 */
static int hpsa_eh_abort_handler(struct scsi_cmnd *sc)
{

6234
	int rc;
6235 6236 6237 6238 6239 6240
	struct ctlr_info *h;
	struct hpsa_scsi_dev_t *dev;
	struct CommandList *abort; /* pointer to command to be aborted */
	struct scsi_cmnd *as;	/* ptr to scsi cmd inside aborted command. */
	char msg[256];		/* For debug messaging. */
	int ml = 0;
D
Don Brace 已提交
6241
	__le32 tagupper, taglower;
6242 6243 6244 6245
	int refcount, reply_queue;

	if (sc == NULL)
		return FAILED;
6246

S
Stephen Cameron 已提交
6247 6248 6249
	if (sc->device == NULL)
		return FAILED;

6250 6251
	/* Find the controller of the command to be aborted */
	h = sdev_to_hba(sc->device);
S
Stephen Cameron 已提交
6252
	if (h == NULL)
6253 6254
		return FAILED;

6255 6256 6257 6258 6259
	/* Find the device of the command to be aborted */
	dev = sc->device->hostdata;
	if (!dev) {
		dev_err(&h->pdev->dev, "%s FAILED, Device lookup failed.\n",
				msg);
6260
		return FAILED;
6261 6262 6263 6264 6265 6266 6267 6268 6269 6270 6271 6272 6273 6274 6275
	}

	/* If controller locked up, we can guarantee command won't complete */
	if (lockup_detected(h)) {
		hpsa_show_dev_msg(KERN_WARNING, h, dev,
					"ABORT FAILED, lockup detected");
		return FAILED;
	}

	/* This is a good time to check if controller lockup has occurred */
	if (detect_controller_lockup(h)) {
		hpsa_show_dev_msg(KERN_WARNING, h, dev,
					"ABORT FAILED, new lockup detected");
		return FAILED;
	}
6276

6277 6278 6279 6280 6281 6282
	/* Check that controller supports some kind of task abort */
	if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags) &&
		!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
		return FAILED;

	memset(msg, 0, sizeof(msg));
6283
	ml += sprintf(msg+ml, "scsi %d:%d:%d:%llu %s %p",
6284
		h->scsi_host->host_no, sc->device->channel,
6285
		sc->device->id, sc->device->lun,
6286
		"Aborting command", sc);
6287 6288 6289 6290

	/* Get SCSI command to be aborted */
	abort = (struct CommandList *) sc->host_scribble;
	if (abort == NULL) {
6291 6292 6293 6294 6295 6296 6297
		/* This can happen if the command already completed. */
		return SUCCESS;
	}
	refcount = atomic_inc_return(&abort->refcount);
	if (refcount == 1) { /* Command is done already. */
		cmd_free(h, abort);
		return SUCCESS;
6298
	}
S
Stephen Cameron 已提交
6299 6300 6301 6302 6303 6304 6305 6306

	/* Don't bother trying the abort if we know it won't work. */
	if (abort->cmd_type != CMD_IOACCEL2 &&
		abort->cmd_type != CMD_IOACCEL1 && !dev->supports_aborts) {
		cmd_free(h, abort);
		return FAILED;
	}

6307 6308 6309 6310 6311 6312 6313 6314 6315 6316
	/*
	 * Check that we're aborting the right command.
	 * It's possible the CommandList already completed and got re-used.
	 */
	if (abort->scsi_cmd != sc) {
		cmd_free(h, abort);
		return SUCCESS;
	}

	abort->abort_pending = true;
6317
	hpsa_get_tag(h, abort, &taglower, &tagupper);
6318
	reply_queue = hpsa_extract_reply_queue(h, abort);
6319
	ml += sprintf(msg+ml, "Tag:0x%08x:%08x ", tagupper, taglower);
6320
	as  = abort->scsi_cmd;
6321
	if (as != NULL)
6322 6323 6324 6325 6326
		ml += sprintf(msg+ml,
			"CDBLen: %d CDB: 0x%02x%02x... SN: 0x%lx ",
			as->cmd_len, as->cmnd[0], as->cmnd[1],
			as->serial_number);
	dev_warn(&h->pdev->dev, "%s BEING SENT\n", msg);
6327
	hpsa_show_dev_msg(KERN_WARNING, h, dev, "Aborting command");
6328

6329 6330 6331 6332 6333
	/*
	 * Command is in flight, or possibly already completed
	 * by the firmware (but not to the scsi mid layer) but we can't
	 * distinguish which.  Send the abort down.
	 */
S
Stephen Cameron 已提交
6334 6335
	if (wait_for_available_abort_cmd(h)) {
		dev_warn(&h->pdev->dev,
6336 6337
			"%s FAILED, timeout waiting for an abort command to become available.\n",
			msg);
S
Stephen Cameron 已提交
6338 6339 6340
		cmd_free(h, abort);
		return FAILED;
	}
6341
	rc = hpsa_send_abort_both_ways(h, dev, abort, reply_queue);
S
Stephen Cameron 已提交
6342 6343
	atomic_inc(&h->abort_cmds_available);
	wake_up_all(&h->abort_cmd_wait_queue);
6344
	if (rc != 0) {
6345
		dev_warn(&h->pdev->dev, "%s SENT, FAILED\n", msg);
6346
		hpsa_show_dev_msg(KERN_WARNING, h, dev,
6347
				"FAILED to abort command");
6348
		cmd_free(h, abort);
6349 6350
		return FAILED;
	}
6351
	dev_info(&h->pdev->dev, "%s SENT, SUCCESS\n", msg);
W
Webb Scales 已提交
6352
	wait_event(h->event_sync_wait_queue,
6353
		   abort->scsi_cmd != sc || lockup_detected(h));
6354
	cmd_free(h, abort);
6355
	return !lockup_detected(h) ? SUCCESS : FAILED;
6356 6357
}

6358 6359 6360 6361 6362 6363 6364 6365 6366 6367 6368 6369 6370 6371 6372 6373 6374 6375 6376 6377 6378 6379 6380 6381 6382 6383 6384 6385 6386 6387 6388 6389 6390 6391 6392 6393 6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405 6406 6407 6408 6409
/*
 * For operations with an associated SCSI command, a command block is allocated
 * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the
 * block request tag as an index into a table of entries.  cmd_tagged_free() is
 * the complement, although cmd_free() may be called instead.
 */
static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
					    struct scsi_cmnd *scmd)
{
	int idx = hpsa_get_cmd_index(scmd);
	struct CommandList *c = h->cmd_pool + idx;

	if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) {
		dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n",
			idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1);
		/* The index value comes from the block layer, so if it's out of
		 * bounds, it's probably not our bug.
		 */
		BUG();
	}

	atomic_inc(&c->refcount);
	if (unlikely(!hpsa_is_cmd_idle(c))) {
		/*
		 * We expect that the SCSI layer will hand us a unique tag
		 * value.  Thus, there should never be a collision here between
		 * two requests...because if the selected command isn't idle
		 * then someone is going to be very disappointed.
		 */
		dev_err(&h->pdev->dev,
			"tag collision (tag=%d) in cmd_tagged_alloc().\n",
			idx);
		if (c->scsi_cmd != NULL)
			scsi_print_command(c->scsi_cmd);
		scsi_print_command(scmd);
	}

	hpsa_cmd_partial_init(h, idx, c);
	return c;
}

static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c)
{
	/*
	 * Release our reference to the block.  We don't need to do anything
	 * else to free it, because it is accessed by index.  (There's no point
	 * in checking the result of the decrement, since we cannot guarantee
	 * that there isn't a concurrent abort which is also accessing it.)
	 */
	(void)atomic_dec(&c->refcount);
}

6410 6411 6412 6413 6414
/*
 * For operations that cannot sleep, a command block is allocated at init,
 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
 * which ones are free or in use.  Lock must be held when calling this.
 * cmd_free() is the complement.
6415 6416
 * This function never gives up and returns NULL.  If it hangs,
 * another thread must call cmd_free() to free some tags.
6417
 */
6418

6419 6420 6421
static struct CommandList *cmd_alloc(struct ctlr_info *h)
{
	struct CommandList *c;
6422
	int refcount, i;
6423
	int offset = 0;
6424

6425 6426
	/*
	 * There is some *extremely* small but non-zero chance that that
6427 6428 6429 6430 6431 6432 6433 6434
	 * multiple threads could get in here, and one thread could
	 * be scanning through the list of bits looking for a free
	 * one, but the free ones are always behind him, and other
	 * threads sneak in behind him and eat them before he can
	 * get to them, so that while there is always a free one, a
	 * very unlucky thread might be starved anyway, never able to
	 * beat the other threads.  In reality, this happens so
	 * infrequently as to be indistinguishable from never.
6435 6436 6437 6438 6439 6440 6441
	 *
	 * Note that we start allocating commands before the SCSI host structure
	 * is initialized.  Since the search starts at bit zero, this
	 * all works, since we have at least one command structure available;
	 * however, it means that the structures with the low indexes have to be
	 * reserved for driver-initiated requests, while requests from the block
	 * layer will use the higher indexes.
6442
	 */
6443

6444
	for (;;) {
6445 6446 6447 6448
		i = find_next_zero_bit(h->cmd_pool_bits,
					HPSA_NRESERVED_CMDS,
					offset);
		if (unlikely(i >= HPSA_NRESERVED_CMDS)) {
6449 6450 6451 6452 6453 6454 6455
			offset = 0;
			continue;
		}
		c = h->cmd_pool + i;
		refcount = atomic_inc_return(&c->refcount);
		if (unlikely(refcount > 1)) {
			cmd_free(h, c); /* already in use */
6456
			offset = (i + 1) % HPSA_NRESERVED_CMDS;
6457 6458 6459 6460 6461 6462
			continue;
		}
		set_bit(i & (BITS_PER_LONG - 1),
			h->cmd_pool_bits + (i / BITS_PER_LONG));
		break; /* it's ours now. */
	}
6463
	hpsa_cmd_partial_init(h, i, c);
6464 6465 6466
	return c;
}

6467 6468 6469 6470 6471 6472
/*
 * This is the complementary operation to cmd_alloc().  Note, however, in some
 * corner cases it may also be used to free blocks allocated by
 * cmd_tagged_alloc() in which case the ref-count decrement does the trick and
 * the clear-bit is harmless.
 */
6473 6474
static void cmd_free(struct ctlr_info *h, struct CommandList *c)
{
6475 6476
	if (atomic_dec_and_test(&c->refcount)) {
		int i;
6477

6478 6479 6480 6481
		i = c - h->cmd_pool;
		clear_bit(i & (BITS_PER_LONG - 1),
			  h->cmd_pool_bits + (i / BITS_PER_LONG));
	}
6482 6483 6484 6485
}

#ifdef CONFIG_COMPAT

D
Don Brace 已提交
6486 6487
static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd,
	void __user *arg)
6488 6489 6490 6491 6492 6493 6494 6495
{
	IOCTL32_Command_struct __user *arg32 =
	    (IOCTL32_Command_struct __user *) arg;
	IOCTL_Command_struct arg64;
	IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
	int err;
	u32 cp;

6496
	memset(&arg64, 0, sizeof(arg64));
6497 6498 6499 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511
	err = 0;
	err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
			   sizeof(arg64.LUN_info));
	err |= copy_from_user(&arg64.Request, &arg32->Request,
			   sizeof(arg64.Request));
	err |= copy_from_user(&arg64.error_info, &arg32->error_info,
			   sizeof(arg64.error_info));
	err |= get_user(arg64.buf_size, &arg32->buf_size);
	err |= get_user(cp, &arg32->buf);
	arg64.buf = compat_ptr(cp);
	err |= copy_to_user(p, &arg64, sizeof(arg64));

	if (err)
		return -EFAULT;

D
Don Brace 已提交
6512
	err = hpsa_ioctl(dev, CCISS_PASSTHRU, p);
6513 6514 6515 6516 6517 6518 6519 6520 6521 6522
	if (err)
		return err;
	err |= copy_in_user(&arg32->error_info, &p->error_info,
			 sizeof(arg32->error_info));
	if (err)
		return -EFAULT;
	return err;
}

static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
D
Don Brace 已提交
6523
	int cmd, void __user *arg)
6524 6525 6526 6527 6528 6529 6530 6531 6532
{
	BIG_IOCTL32_Command_struct __user *arg32 =
	    (BIG_IOCTL32_Command_struct __user *) arg;
	BIG_IOCTL_Command_struct arg64;
	BIG_IOCTL_Command_struct __user *p =
	    compat_alloc_user_space(sizeof(arg64));
	int err;
	u32 cp;

6533
	memset(&arg64, 0, sizeof(arg64));
6534 6535 6536 6537 6538 6539 6540 6541 6542 6543 6544 6545 6546 6547 6548 6549
	err = 0;
	err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
			   sizeof(arg64.LUN_info));
	err |= copy_from_user(&arg64.Request, &arg32->Request,
			   sizeof(arg64.Request));
	err |= copy_from_user(&arg64.error_info, &arg32->error_info,
			   sizeof(arg64.error_info));
	err |= get_user(arg64.buf_size, &arg32->buf_size);
	err |= get_user(arg64.malloc_size, &arg32->malloc_size);
	err |= get_user(cp, &arg32->buf);
	arg64.buf = compat_ptr(cp);
	err |= copy_to_user(p, &arg64, sizeof(arg64));

	if (err)
		return -EFAULT;

D
Don Brace 已提交
6550
	err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, p);
6551 6552 6553 6554 6555 6556 6557 6558
	if (err)
		return err;
	err |= copy_in_user(&arg32->error_info, &p->error_info,
			 sizeof(arg32->error_info));
	if (err)
		return -EFAULT;
	return err;
}
6559

D
Don Brace 已提交
6560
static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
6561 6562 6563 6564 6565 6566 6567 6568 6569 6570 6571 6572 6573 6574 6575 6576 6577 6578 6579 6580 6581 6582 6583 6584 6585 6586 6587 6588
{
	switch (cmd) {
	case CCISS_GETPCIINFO:
	case CCISS_GETINTINFO:
	case CCISS_SETINTINFO:
	case CCISS_GETNODENAME:
	case CCISS_SETNODENAME:
	case CCISS_GETHEARTBEAT:
	case CCISS_GETBUSTYPES:
	case CCISS_GETFIRMVER:
	case CCISS_GETDRIVVER:
	case CCISS_REVALIDVOLS:
	case CCISS_DEREGDISK:
	case CCISS_REGNEWDISK:
	case CCISS_REGNEWD:
	case CCISS_RESCANDISK:
	case CCISS_GETLUNINFO:
		return hpsa_ioctl(dev, cmd, arg);

	case CCISS_PASSTHRU32:
		return hpsa_ioctl32_passthru(dev, cmd, arg);
	case CCISS_BIG_PASSTHRU32:
		return hpsa_ioctl32_big_passthru(dev, cmd, arg);

	default:
		return -ENOIOCTLCMD;
	}
}
6589 6590 6591 6592 6593 6594 6595 6596 6597 6598 6599 6600 6601 6602 6603 6604 6605 6606 6607 6608 6609 6610 6611 6612 6613 6614 6615 6616 6617 6618 6619 6620 6621 6622 6623 6624 6625 6626 6627 6628 6629 6630 6631 6632 6633
#endif

static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
{
	struct hpsa_pci_info pciinfo;

	if (!argp)
		return -EINVAL;
	pciinfo.domain = pci_domain_nr(h->pdev->bus);
	pciinfo.bus = h->pdev->bus->number;
	pciinfo.dev_fn = h->pdev->devfn;
	pciinfo.board_id = h->board_id;
	if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
		return -EFAULT;
	return 0;
}

static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
{
	DriverVer_type DriverVer;
	unsigned char vmaj, vmin, vsubmin;
	int rc;

	rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
		&vmaj, &vmin, &vsubmin);
	if (rc != 3) {
		dev_info(&h->pdev->dev, "driver version string '%s' "
			"unrecognized.", HPSA_DRIVER_VERSION);
		vmaj = 0;
		vmin = 0;
		vsubmin = 0;
	}
	DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
	if (!argp)
		return -EINVAL;
	if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
		return -EFAULT;
	return 0;
}

static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
{
	IOCTL_Command_struct iocommand;
	struct CommandList *c;
	char *buff = NULL;
6634
	u64 temp64;
6635
	int rc = 0;
6636 6637 6638 6639 6640 6641 6642 6643 6644 6645 6646 6647 6648 6649

	if (!argp)
		return -EINVAL;
	if (!capable(CAP_SYS_RAWIO))
		return -EPERM;
	if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
		return -EFAULT;
	if ((iocommand.buf_size < 1) &&
	    (iocommand.Request.Type.Direction != XFER_NONE)) {
		return -EINVAL;
	}
	if (iocommand.buf_size > 0) {
		buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
		if (buff == NULL)
6650
			return -ENOMEM;
6651
		if (iocommand.Request.Type.Direction & XFER_WRITE) {
6652 6653 6654
			/* Copy the data into the buffer we created */
			if (copy_from_user(buff, iocommand.buf,
				iocommand.buf_size)) {
6655 6656
				rc = -EFAULT;
				goto out_kfree;
6657 6658 6659
			}
		} else {
			memset(buff, 0, iocommand.buf_size);
6660
		}
6661
	}
6662
	c = cmd_alloc(h);
6663

6664 6665
	/* Fill in the command type */
	c->cmd_type = CMD_IOCTL_PEND;
6666
	c->scsi_cmd = SCSI_CMD_BUSY;
6667 6668 6669 6670
	/* Fill in Command Header */
	c->Header.ReplyQueue = 0; /* unused in simple mode */
	if (iocommand.buf_size > 0) {	/* buffer to fill */
		c->Header.SGList = 1;
6671
		c->Header.SGTotal = cpu_to_le16(1);
6672 6673
	} else	{ /* no buffers to fill */
		c->Header.SGList = 0;
6674
		c->Header.SGTotal = cpu_to_le16(0);
6675 6676 6677 6678 6679 6680 6681 6682 6683
	}
	memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));

	/* Fill in Request block */
	memcpy(&c->Request, &iocommand.Request,
		sizeof(c->Request));

	/* Fill in the scatter gather information */
	if (iocommand.buf_size > 0) {
6684
		temp64 = pci_map_single(h->pdev, buff,
6685
			iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
6686 6687 6688
		if (dma_mapping_error(&h->pdev->dev, (dma_addr_t) temp64)) {
			c->SG[0].Addr = cpu_to_le64(0);
			c->SG[0].Len = cpu_to_le32(0);
6689 6690 6691
			rc = -ENOMEM;
			goto out;
		}
6692 6693 6694
		c->SG[0].Addr = cpu_to_le64(temp64);
		c->SG[0].Len = cpu_to_le32(iocommand.buf_size);
		c->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* not chaining */
6695
	}
6696
	rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
6697
					NO_TIMEOUT);
6698 6699
	if (iocommand.buf_size > 0)
		hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
6700
	check_ioctl_unit_attention(h, c);
6701 6702 6703 6704
	if (rc) {
		rc = -EIO;
		goto out;
	}
6705 6706 6707 6708 6709

	/* Copy the error information out */
	memcpy(&iocommand.error_info, c->err_info,
		sizeof(iocommand.error_info));
	if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
6710 6711
		rc = -EFAULT;
		goto out;
6712
	}
6713
	if ((iocommand.Request.Type.Direction & XFER_READ) &&
6714
		iocommand.buf_size > 0) {
6715 6716
		/* Copy the data out of the buffer we created */
		if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
6717 6718
			rc = -EFAULT;
			goto out;
6719 6720
		}
	}
6721
out:
6722
	cmd_free(h, c);
6723 6724 6725
out_kfree:
	kfree(buff);
	return rc;
6726 6727 6728 6729 6730 6731 6732 6733
}

static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
{
	BIG_IOCTL_Command_struct *ioc;
	struct CommandList *c;
	unsigned char **buff = NULL;
	int *buff_size = NULL;
6734
	u64 temp64;
6735 6736
	BYTE sg_used = 0;
	int status = 0;
6737 6738
	u32 left;
	u32 sz;
6739 6740 6741 6742 6743 6744
	BYTE __user *data_ptr;

	if (!argp)
		return -EINVAL;
	if (!capable(CAP_SYS_RAWIO))
		return -EPERM;
6745
	ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
6746 6747 6748 6749 6750 6751 6752 6753 6754 6755 6756 6757 6758 6759 6760 6761 6762 6763
	if (!ioc) {
		status = -ENOMEM;
		goto cleanup1;
	}
	if (copy_from_user(ioc, argp, sizeof(*ioc))) {
		status = -EFAULT;
		goto cleanup1;
	}
	if ((ioc->buf_size < 1) &&
	    (ioc->Request.Type.Direction != XFER_NONE)) {
		status = -EINVAL;
		goto cleanup1;
	}
	/* Check kmalloc limits  using all SGs */
	if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
		status = -EINVAL;
		goto cleanup1;
	}
6764
	if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD) {
6765 6766 6767
		status = -EINVAL;
		goto cleanup1;
	}
6768
	buff = kzalloc(SG_ENTRIES_IN_CMD * sizeof(char *), GFP_KERNEL);
6769 6770 6771 6772
	if (!buff) {
		status = -ENOMEM;
		goto cleanup1;
	}
6773
	buff_size = kmalloc(SG_ENTRIES_IN_CMD * sizeof(int), GFP_KERNEL);
6774 6775 6776 6777 6778 6779 6780 6781 6782 6783 6784 6785 6786 6787
	if (!buff_size) {
		status = -ENOMEM;
		goto cleanup1;
	}
	left = ioc->buf_size;
	data_ptr = ioc->buf;
	while (left) {
		sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
		buff_size[sg_used] = sz;
		buff[sg_used] = kmalloc(sz, GFP_KERNEL);
		if (buff[sg_used] == NULL) {
			status = -ENOMEM;
			goto cleanup1;
		}
6788
		if (ioc->Request.Type.Direction & XFER_WRITE) {
6789
			if (copy_from_user(buff[sg_used], data_ptr, sz)) {
6790
				status = -EFAULT;
6791 6792 6793 6794 6795 6796 6797 6798
				goto cleanup1;
			}
		} else
			memset(buff[sg_used], 0, sz);
		left -= sz;
		data_ptr += sz;
		sg_used++;
	}
6799
	c = cmd_alloc(h);
6800

6801
	c->cmd_type = CMD_IOCTL_PEND;
6802
	c->scsi_cmd = SCSI_CMD_BUSY;
6803
	c->Header.ReplyQueue = 0;
6804 6805
	c->Header.SGList = (u8) sg_used;
	c->Header.SGTotal = cpu_to_le16(sg_used);
6806 6807 6808 6809 6810
	memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
	memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
	if (ioc->buf_size > 0) {
		int i;
		for (i = 0; i < sg_used; i++) {
6811
			temp64 = pci_map_single(h->pdev, buff[i],
6812
				    buff_size[i], PCI_DMA_BIDIRECTIONAL);
6813 6814 6815 6816
			if (dma_mapping_error(&h->pdev->dev,
							(dma_addr_t) temp64)) {
				c->SG[i].Addr = cpu_to_le64(0);
				c->SG[i].Len = cpu_to_le32(0);
6817 6818 6819
				hpsa_pci_unmap(h->pdev, c, i,
					PCI_DMA_BIDIRECTIONAL);
				status = -ENOMEM;
6820
				goto cleanup0;
6821
			}
6822 6823 6824
			c->SG[i].Addr = cpu_to_le64(temp64);
			c->SG[i].Len = cpu_to_le32(buff_size[i]);
			c->SG[i].Ext = cpu_to_le32(0);
6825
		}
6826
		c->SG[--i].Ext = cpu_to_le32(HPSA_SG_LAST);
6827
	}
6828
	status = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
6829
						NO_TIMEOUT);
6830 6831
	if (sg_used)
		hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL);
6832
	check_ioctl_unit_attention(h, c);
6833 6834 6835 6836 6837
	if (status) {
		status = -EIO;
		goto cleanup0;
	}

6838 6839 6840 6841
	/* Copy the error information out */
	memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
	if (copy_to_user(argp, ioc, sizeof(*ioc))) {
		status = -EFAULT;
6842
		goto cleanup0;
6843
	}
6844
	if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) {
D
Don Brace 已提交
6845 6846
		int i;

6847 6848 6849 6850 6851
		/* Copy the data out of the buffer we created */
		BYTE __user *ptr = ioc->buf;
		for (i = 0; i < sg_used; i++) {
			if (copy_to_user(ptr, buff[i], buff_size[i])) {
				status = -EFAULT;
6852
				goto cleanup0;
6853 6854 6855 6856 6857
			}
			ptr += buff_size[i];
		}
	}
	status = 0;
6858
cleanup0:
6859
	cmd_free(h, c);
6860 6861
cleanup1:
	if (buff) {
D
Don Brace 已提交
6862 6863
		int i;

6864 6865 6866 6867 6868 6869 6870 6871 6872 6873 6874 6875 6876 6877 6878 6879
		for (i = 0; i < sg_used; i++)
			kfree(buff[i]);
		kfree(buff);
	}
	kfree(buff_size);
	kfree(ioc);
	return status;
}

static void check_ioctl_unit_attention(struct ctlr_info *h,
	struct CommandList *c)
{
	if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
			c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
		(void) check_for_unit_attention(h, c);
}
6880

6881 6882 6883
/*
 * ioctl
 */
D
Don Brace 已提交
6884
static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
6885 6886 6887
{
	struct ctlr_info *h;
	void __user *argp = (void __user *)arg;
6888
	int rc;
6889 6890 6891 6892 6893 6894 6895

	h = sdev_to_hba(dev);

	switch (cmd) {
	case CCISS_DEREGDISK:
	case CCISS_REGNEWDISK:
	case CCISS_REGNEWD:
6896
		hpsa_scan_start(h->scsi_host);
6897 6898 6899 6900 6901 6902
		return 0;
	case CCISS_GETPCIINFO:
		return hpsa_getpciinfo_ioctl(h, argp);
	case CCISS_GETDRIVVER:
		return hpsa_getdrivver_ioctl(h, argp);
	case CCISS_PASSTHRU:
6903
		if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6904 6905
			return -EAGAIN;
		rc = hpsa_passthru_ioctl(h, argp);
6906
		atomic_inc(&h->passthru_cmds_avail);
6907
		return rc;
6908
	case CCISS_BIG_PASSTHRU:
6909
		if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6910 6911
			return -EAGAIN;
		rc = hpsa_big_passthru_ioctl(h, argp);
6912
		atomic_inc(&h->passthru_cmds_avail);
6913
		return rc;
6914 6915 6916 6917 6918
	default:
		return -ENOTTY;
	}
}

6919
static void hpsa_send_host_reset(struct ctlr_info *h, unsigned char *scsi3addr,
6920
				u8 reset_type)
6921 6922 6923 6924
{
	struct CommandList *c;

	c = cmd_alloc(h);
6925

6926 6927
	/* fill_cmd can't fail here, no data buffer to map */
	(void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
6928 6929 6930 6931 6932 6933 6934 6935
		RAID_CTLR_LUNID, TYPE_MSG);
	c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */
	c->waiting = NULL;
	enqueue_cmd_and_start_io(h, c);
	/* Don't wait for completion, the reset won't complete.  Don't free
	 * the command either.  This is the last command we will send before
	 * re-initializing everything, so it doesn't matter and won't leak.
	 */
6936
	return;
6937 6938
}

6939
static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
6940
	void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
6941 6942 6943
	int cmd_type)
{
	int pci_dir = XFER_NONE;
S
Stephen Cameron 已提交
6944
	u64 tag; /* for commands to be aborted */
6945 6946

	c->cmd_type = CMD_IOCTL_PEND;
6947
	c->scsi_cmd = SCSI_CMD_BUSY;
6948 6949 6950
	c->Header.ReplyQueue = 0;
	if (buff != NULL && size > 0) {
		c->Header.SGList = 1;
6951
		c->Header.SGTotal = cpu_to_le16(1);
6952 6953
	} else {
		c->Header.SGList = 0;
6954
		c->Header.SGTotal = cpu_to_le16(0);
6955 6956 6957 6958 6959 6960 6961
	}
	memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);

	if (cmd_type == TYPE_CMD) {
		switch (cmd) {
		case HPSA_INQUIRY:
			/* are we trying to read a vital product page */
6962
			if (page_code & VPD_PAGE) {
6963
				c->Request.CDB[1] = 0x01;
6964
				c->Request.CDB[2] = (page_code & 0xff);
6965 6966
			}
			c->Request.CDBLen = 6;
6967 6968
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6969 6970 6971 6972 6973 6974 6975 6976 6977 6978
			c->Request.Timeout = 0;
			c->Request.CDB[0] = HPSA_INQUIRY;
			c->Request.CDB[4] = size & 0xFF;
			break;
		case HPSA_REPORT_LOG:
		case HPSA_REPORT_PHYS:
			/* Talking to controller so It's a physical command
			   mode = 00 target = 0.  Nothing to write.
			 */
			c->Request.CDBLen = 12;
6979 6980
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6981 6982 6983 6984 6985 6986 6987
			c->Request.Timeout = 0;
			c->Request.CDB[0] = cmd;
			c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
			c->Request.CDB[7] = (size >> 16) & 0xFF;
			c->Request.CDB[8] = (size >> 8) & 0xFF;
			c->Request.CDB[9] = size & 0xFF;
			break;
S
Scott Teel 已提交
6988 6989 6990 6991 6992 6993 6994 6995 6996 6997 6998 6999 7000 7001 7002 7003 7004 7005
		case BMIC_SENSE_DIAG_OPTIONS:
			c->Request.CDBLen = 16;
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
			c->Request.Timeout = 0;
			/* Spec says this should be BMIC_WRITE */
			c->Request.CDB[0] = BMIC_READ;
			c->Request.CDB[6] = BMIC_SENSE_DIAG_OPTIONS;
			break;
		case BMIC_SET_DIAG_OPTIONS:
			c->Request.CDBLen = 16;
			c->Request.type_attr_dir =
					TYPE_ATTR_DIR(cmd_type,
						ATTR_SIMPLE, XFER_WRITE);
			c->Request.Timeout = 0;
			c->Request.CDB[0] = BMIC_WRITE;
			c->Request.CDB[6] = BMIC_SET_DIAG_OPTIONS;
			break;
7006 7007
		case HPSA_CACHE_FLUSH:
			c->Request.CDBLen = 12;
7008 7009 7010
			c->Request.type_attr_dir =
					TYPE_ATTR_DIR(cmd_type,
						ATTR_SIMPLE, XFER_WRITE);
7011 7012 7013
			c->Request.Timeout = 0;
			c->Request.CDB[0] = BMIC_WRITE;
			c->Request.CDB[6] = BMIC_CACHE_FLUSH;
7014 7015
			c->Request.CDB[7] = (size >> 8) & 0xFF;
			c->Request.CDB[8] = size & 0xFF;
7016 7017 7018
			break;
		case TEST_UNIT_READY:
			c->Request.CDBLen = 6;
7019 7020
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
7021 7022
			c->Request.Timeout = 0;
			break;
7023 7024
		case HPSA_GET_RAID_MAP:
			c->Request.CDBLen = 12;
7025 7026
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
7027 7028 7029 7030 7031 7032 7033 7034
			c->Request.Timeout = 0;
			c->Request.CDB[0] = HPSA_CISS_READ;
			c->Request.CDB[1] = cmd;
			c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
			c->Request.CDB[7] = (size >> 16) & 0xFF;
			c->Request.CDB[8] = (size >> 8) & 0xFF;
			c->Request.CDB[9] = size & 0xFF;
			break;
7035 7036
		case BMIC_SENSE_CONTROLLER_PARAMETERS:
			c->Request.CDBLen = 10;
7037 7038
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
7039 7040 7041 7042 7043 7044
			c->Request.Timeout = 0;
			c->Request.CDB[0] = BMIC_READ;
			c->Request.CDB[6] = BMIC_SENSE_CONTROLLER_PARAMETERS;
			c->Request.CDB[7] = (size >> 16) & 0xFF;
			c->Request.CDB[8] = (size >> 8) & 0xFF;
			break;
7045 7046 7047 7048 7049 7050 7051 7052 7053 7054
		case BMIC_IDENTIFY_PHYSICAL_DEVICE:
			c->Request.CDBLen = 10;
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
			c->Request.Timeout = 0;
			c->Request.CDB[0] = BMIC_READ;
			c->Request.CDB[6] = BMIC_IDENTIFY_PHYSICAL_DEVICE;
			c->Request.CDB[7] = (size >> 16) & 0xFF;
			c->Request.CDB[8] = (size >> 8) & 0XFF;
			break;
K
Kevin Barnett 已提交
7055 7056 7057 7058 7059 7060 7061 7062 7063 7064
		case BMIC_SENSE_SUBSYSTEM_INFORMATION:
			c->Request.CDBLen = 10;
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
			c->Request.Timeout = 0;
			c->Request.CDB[0] = BMIC_READ;
			c->Request.CDB[6] = BMIC_SENSE_SUBSYSTEM_INFORMATION;
			c->Request.CDB[7] = (size >> 16) & 0xFF;
			c->Request.CDB[8] = (size >> 8) & 0XFF;
			break;
7065 7066 7067 7068 7069 7070 7071 7072 7073 7074
		case BMIC_SENSE_STORAGE_BOX_PARAMS:
			c->Request.CDBLen = 10;
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
			c->Request.Timeout = 0;
			c->Request.CDB[0] = BMIC_READ;
			c->Request.CDB[6] = BMIC_SENSE_STORAGE_BOX_PARAMS;
			c->Request.CDB[7] = (size >> 16) & 0xFF;
			c->Request.CDB[8] = (size >> 8) & 0XFF;
			break;
S
Scott Teel 已提交
7075 7076 7077 7078 7079 7080 7081 7082 7083 7084 7085 7086 7087 7088 7089 7090
		case BMIC_IDENTIFY_CONTROLLER:
			c->Request.CDBLen = 10;
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
			c->Request.Timeout = 0;
			c->Request.CDB[0] = BMIC_READ;
			c->Request.CDB[1] = 0;
			c->Request.CDB[2] = 0;
			c->Request.CDB[3] = 0;
			c->Request.CDB[4] = 0;
			c->Request.CDB[5] = 0;
			c->Request.CDB[6] = BMIC_IDENTIFY_CONTROLLER;
			c->Request.CDB[7] = (size >> 16) & 0xFF;
			c->Request.CDB[8] = (size >> 8) & 0XFF;
			c->Request.CDB[9] = 0;
			break;
7091 7092 7093
		default:
			dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
			BUG();
7094
			return -1;
7095 7096 7097 7098
		}
	} else if (cmd_type == TYPE_MSG) {
		switch (cmd) {

S
Scott Teel 已提交
7099 7100 7101 7102 7103 7104 7105 7106 7107 7108 7109 7110 7111 7112
		case  HPSA_PHYS_TARGET_RESET:
			c->Request.CDBLen = 16;
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
			c->Request.Timeout = 0; /* Don't time out */
			memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
			c->Request.CDB[0] = HPSA_RESET;
			c->Request.CDB[1] = HPSA_TARGET_RESET_TYPE;
			/* Physical target reset needs no control bytes 4-7*/
			c->Request.CDB[4] = 0x00;
			c->Request.CDB[5] = 0x00;
			c->Request.CDB[6] = 0x00;
			c->Request.CDB[7] = 0x00;
			break;
7113 7114
		case  HPSA_DEVICE_RESET_MSG:
			c->Request.CDBLen = 16;
7115 7116
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
7117
			c->Request.Timeout = 0; /* Don't time out */
7118 7119
			memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
			c->Request.CDB[0] =  cmd;
7120
			c->Request.CDB[1] = HPSA_RESET_TYPE_LUN;
7121 7122 7123 7124 7125 7126
			/* If bytes 4-7 are zero, it means reset the */
			/* LunID device */
			c->Request.CDB[4] = 0x00;
			c->Request.CDB[5] = 0x00;
			c->Request.CDB[6] = 0x00;
			c->Request.CDB[7] = 0x00;
7127 7128
			break;
		case  HPSA_ABORT_MSG:
S
Stephen Cameron 已提交
7129
			memcpy(&tag, buff, sizeof(tag));
D
Don Brace 已提交
7130
			dev_dbg(&h->pdev->dev,
S
Stephen Cameron 已提交
7131 7132
				"Abort Tag:0x%016llx using rqst Tag:0x%016llx",
				tag, c->Header.tag);
7133
			c->Request.CDBLen = 16;
7134 7135 7136
			c->Request.type_attr_dir =
					TYPE_ATTR_DIR(cmd_type,
						ATTR_SIMPLE, XFER_WRITE);
7137 7138 7139 7140 7141 7142
			c->Request.Timeout = 0; /* Don't time out */
			c->Request.CDB[0] = HPSA_TASK_MANAGEMENT;
			c->Request.CDB[1] = HPSA_TMF_ABORT_TASK;
			c->Request.CDB[2] = 0x00; /* reserved */
			c->Request.CDB[3] = 0x00; /* reserved */
			/* Tag to abort goes in CDB[4]-CDB[11] */
S
Stephen Cameron 已提交
7143
			memcpy(&c->Request.CDB[4], &tag, sizeof(tag));
7144 7145 7146 7147
			c->Request.CDB[12] = 0x00; /* reserved */
			c->Request.CDB[13] = 0x00; /* reserved */
			c->Request.CDB[14] = 0x00; /* reserved */
			c->Request.CDB[15] = 0x00; /* reserved */
7148 7149 7150 7151 7152 7153 7154 7155 7156 7157 7158
		break;
		default:
			dev_warn(&h->pdev->dev, "unknown message type %d\n",
				cmd);
			BUG();
		}
	} else {
		dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
		BUG();
	}

7159
	switch (GET_DIR(c->Request.type_attr_dir)) {
7160 7161 7162 7163 7164 7165 7166 7167 7168 7169 7170 7171
	case XFER_READ:
		pci_dir = PCI_DMA_FROMDEVICE;
		break;
	case XFER_WRITE:
		pci_dir = PCI_DMA_TODEVICE;
		break;
	case XFER_NONE:
		pci_dir = PCI_DMA_NONE;
		break;
	default:
		pci_dir = PCI_DMA_BIDIRECTIONAL;
	}
7172 7173 7174
	if (hpsa_map_one(h->pdev, c, buff, size, pci_dir))
		return -1;
	return 0;
7175 7176 7177 7178 7179 7180 7181 7182 7183
}

/*
 * Map (physical) PCI mem into (virtual) kernel space
 */
static void __iomem *remap_pci_mem(ulong base, ulong size)
{
	ulong page_base = ((ulong) base) & PAGE_MASK;
	ulong page_offs = ((ulong) base) - page_base;
7184 7185
	void __iomem *page_remapped = ioremap_nocache(page_base,
		page_offs + size);
7186 7187 7188 7189

	return page_remapped ? (page_remapped + page_offs) : NULL;
}

7190
static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q)
7191
{
7192
	return h->access.command_completed(h, q);
7193 7194
}

7195
static inline bool interrupt_pending(struct ctlr_info *h)
7196 7197 7198 7199 7200 7201
{
	return h->access.intr_pending(h);
}

static inline long interrupt_not_for_us(struct ctlr_info *h)
{
7202 7203
	return (h->access.intr_pending(h) == 0) ||
		(h->interrupts_enabled == 0);
7204 7205
}

7206 7207
static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
	u32 raw_tag)
7208 7209 7210 7211 7212 7213 7214 7215
{
	if (unlikely(tag_index >= h->nr_cmds)) {
		dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
		return 1;
	}
	return 0;
}

7216
static inline void finish_cmd(struct CommandList *c)
7217
{
7218
	dial_up_lockup_detection_on_fw_flash_complete(c->h, c);
7219 7220
	if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI
			|| c->cmd_type == CMD_IOACCEL2))
7221
		complete_scsi_command(c);
7222
	else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF)
7223
		complete(c->waiting);
7224 7225
}

7226
/* process completion of an indexed ("direct lookup") command */
7227
static inline void process_indexed_cmd(struct ctlr_info *h,
7228 7229 7230 7231 7232
	u32 raw_tag)
{
	u32 tag_index;
	struct CommandList *c;

7233
	tag_index = raw_tag >> DIRECT_LOOKUP_SHIFT;
7234 7235 7236 7237
	if (!bad_tag(h, tag_index, raw_tag)) {
		c = h->cmd_pool + tag_index;
		finish_cmd(c);
	}
7238 7239
}

7240 7241 7242 7243 7244 7245 7246 7247 7248 7249 7250 7251 7252 7253 7254 7255 7256 7257 7258
/* Some controllers, like p400, will give us one interrupt
 * after a soft reset, even if we turned interrupts off.
 * Only need to check for this in the hpsa_xxx_discard_completions
 * functions.
 */
static int ignore_bogus_interrupt(struct ctlr_info *h)
{
	if (likely(!reset_devices))
		return 0;

	if (likely(h->interrupts_enabled))
		return 0;

	dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled "
		"(known firmware bug.)  Ignoring.\n");

	return 1;
}

7259 7260 7261 7262 7263 7264
/*
 * Convert &h->q[x] (passed to interrupt handlers) back to h.
 * Relies on (h-q[x] == x) being true for x such that
 * 0 <= x < MAX_REPLY_QUEUES.
 */
static struct ctlr_info *queue_to_hba(u8 *queue)
7265
{
7266 7267 7268 7269 7270 7271 7272
	return container_of((queue - *queue), struct ctlr_info, q[0]);
}

static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue)
{
	struct ctlr_info *h = queue_to_hba(queue);
	u8 q = *(u8 *) queue;
7273 7274 7275 7276 7277 7278 7279
	u32 raw_tag;

	if (ignore_bogus_interrupt(h))
		return IRQ_NONE;

	if (interrupt_not_for_us(h))
		return IRQ_NONE;
7280
	h->last_intr_timestamp = get_jiffies_64();
7281
	while (interrupt_pending(h)) {
7282
		raw_tag = get_next_completion(h, q);
7283
		while (raw_tag != FIFO_EMPTY)
7284
			raw_tag = next_command(h, q);
7285 7286 7287 7288
	}
	return IRQ_HANDLED;
}

7289
static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue)
7290
{
7291
	struct ctlr_info *h = queue_to_hba(queue);
7292
	u32 raw_tag;
7293
	u8 q = *(u8 *) queue;
7294 7295 7296 7297

	if (ignore_bogus_interrupt(h))
		return IRQ_NONE;

7298
	h->last_intr_timestamp = get_jiffies_64();
7299
	raw_tag = get_next_completion(h, q);
7300
	while (raw_tag != FIFO_EMPTY)
7301
		raw_tag = next_command(h, q);
7302 7303 7304
	return IRQ_HANDLED;
}

7305
static irqreturn_t do_hpsa_intr_intx(int irq, void *queue)
7306
{
7307
	struct ctlr_info *h = queue_to_hba((u8 *) queue);
7308
	u32 raw_tag;
7309
	u8 q = *(u8 *) queue;
7310 7311 7312

	if (interrupt_not_for_us(h))
		return IRQ_NONE;
7313
	h->last_intr_timestamp = get_jiffies_64();
7314
	while (interrupt_pending(h)) {
7315
		raw_tag = get_next_completion(h, q);
7316
		while (raw_tag != FIFO_EMPTY) {
7317
			process_indexed_cmd(h, raw_tag);
7318
			raw_tag = next_command(h, q);
7319 7320 7321 7322 7323
		}
	}
	return IRQ_HANDLED;
}

7324
static irqreturn_t do_hpsa_intr_msi(int irq, void *queue)
7325
{
7326
	struct ctlr_info *h = queue_to_hba(queue);
7327
	u32 raw_tag;
7328
	u8 q = *(u8 *) queue;
7329

7330
	h->last_intr_timestamp = get_jiffies_64();
7331
	raw_tag = get_next_completion(h, q);
7332
	while (raw_tag != FIFO_EMPTY) {
7333
		process_indexed_cmd(h, raw_tag);
7334
		raw_tag = next_command(h, q);
7335 7336 7337 7338
	}
	return IRQ_HANDLED;
}

7339 7340 7341 7342
/* Send a message CDB to the firmware. Careful, this only works
 * in simple mode, not performant mode due to the tag lookup.
 * We only ever use this immediately after a controller reset.
 */
7343 7344
static int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
			unsigned char type)
7345 7346 7347 7348 7349 7350 7351 7352 7353 7354
{
	struct Command {
		struct CommandListHeader CommandHeader;
		struct RequestBlock Request;
		struct ErrDescriptor ErrorDescriptor;
	};
	struct Command *cmd;
	static const size_t cmd_sz = sizeof(*cmd) +
					sizeof(cmd->ErrorDescriptor);
	dma_addr_t paddr64;
D
Don Brace 已提交
7355 7356
	__le32 paddr32;
	u32 tag;
7357 7358 7359 7360 7361 7362 7363 7364 7365 7366 7367 7368 7369 7370
	void __iomem *vaddr;
	int i, err;

	vaddr = pci_ioremap_bar(pdev, 0);
	if (vaddr == NULL)
		return -ENOMEM;

	/* The Inbound Post Queue only accepts 32-bit physical addresses for the
	 * CCISS commands, so they must be allocated from the lower 4GiB of
	 * memory.
	 */
	err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
	if (err) {
		iounmap(vaddr);
7371
		return err;
7372 7373 7374 7375 7376 7377 7378 7379 7380 7381 7382 7383
	}

	cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
	if (cmd == NULL) {
		iounmap(vaddr);
		return -ENOMEM;
	}

	/* This must fit, because of the 32-bit consistent DMA mask.  Also,
	 * although there's no guarantee, we assume that the address is at
	 * least 4-byte aligned (most likely, it's page-aligned).
	 */
D
Don Brace 已提交
7384
	paddr32 = cpu_to_le32(paddr64);
7385 7386 7387

	cmd->CommandHeader.ReplyQueue = 0;
	cmd->CommandHeader.SGList = 0;
7388
	cmd->CommandHeader.SGTotal = cpu_to_le16(0);
D
Don Brace 已提交
7389
	cmd->CommandHeader.tag = cpu_to_le64(paddr64);
7390 7391 7392
	memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);

	cmd->Request.CDBLen = 16;
7393 7394
	cmd->Request.type_attr_dir =
			TYPE_ATTR_DIR(TYPE_MSG, ATTR_HEADOFQUEUE, XFER_NONE);
7395 7396 7397 7398
	cmd->Request.Timeout = 0; /* Don't time out */
	cmd->Request.CDB[0] = opcode;
	cmd->Request.CDB[1] = type;
	memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
7399
	cmd->ErrorDescriptor.Addr =
D
Don Brace 已提交
7400
			cpu_to_le64((le32_to_cpu(paddr32) + sizeof(*cmd)));
7401
	cmd->ErrorDescriptor.Len = cpu_to_le32(sizeof(struct ErrorInfo));
7402

D
Don Brace 已提交
7403
	writel(le32_to_cpu(paddr32), vaddr + SA5_REQUEST_PORT_OFFSET);
7404 7405 7406

	for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
		tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
D
Don Brace 已提交
7407
		if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr64)
7408 7409 7410 7411 7412 7413 7414 7415 7416 7417 7418 7419 7420 7421 7422 7423 7424 7425 7426 7427 7428 7429 7430 7431 7432 7433 7434 7435 7436 7437
			break;
		msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
	}

	iounmap(vaddr);

	/* we leak the DMA buffer here ... no choice since the controller could
	 *  still complete the command.
	 */
	if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
		dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
			opcode, type);
		return -ETIMEDOUT;
	}

	pci_free_consistent(pdev, cmd_sz, cmd, paddr64);

	if (tag & HPSA_ERROR_BIT) {
		dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
			opcode, type);
		return -EIO;
	}

	dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
		opcode, type);
	return 0;
}

#define hpsa_noop(p) hpsa_message(p, 3, 0)

7438
static int hpsa_controller_hard_reset(struct pci_dev *pdev,
D
Don Brace 已提交
7439
	void __iomem *vaddr, u32 use_doorbell)
7440 7441 7442 7443 7444 7445 7446 7447
{

	if (use_doorbell) {
		/* For everything after the P600, the PCI power state method
		 * of resetting the controller doesn't work, so we have this
		 * other way using the doorbell register.
		 */
		dev_info(&pdev->dev, "using doorbell to reset controller\n");
7448
		writel(use_doorbell, vaddr + SA5_DOORBELL);
7449

7450
		/* PMC hardware guys tell us we need a 10 second delay after
7451 7452 7453 7454
		 * doorbell reset and before any attempt to talk to the board
		 * at all to ensure that this actually works and doesn't fall
		 * over in some weird corner cases.
		 */
7455
		msleep(10000);
7456 7457 7458 7459 7460 7461 7462 7463 7464
	} else { /* Try to do it the PCI power state way */

		/* Quoting from the Open CISS Specification: "The Power
		 * Management Control/Status Register (CSR) controls the power
		 * state of the device.  The normal operating state is D0,
		 * CSR=00h.  The software off state is D3, CSR=03h.  To reset
		 * the controller, place the interface device in D3 then to D0,
		 * this causes a secondary PCI reset which will reset the
		 * controller." */
7465 7466 7467

		int rc = 0;

7468
		dev_info(&pdev->dev, "using PCI PM to reset controller\n");
7469

7470
		/* enter the D3hot power management state */
7471 7472 7473
		rc = pci_set_power_state(pdev, PCI_D3hot);
		if (rc)
			return rc;
7474 7475 7476 7477

		msleep(500);

		/* enter the D0 power management state */
7478 7479 7480
		rc = pci_set_power_state(pdev, PCI_D0);
		if (rc)
			return rc;
7481 7482 7483 7484 7485 7486 7487

		/*
		 * The P600 requires a small delay when changing states.
		 * Otherwise we may think the board did not reset and we bail.
		 * This for kdump only and is particular to the P600.
		 */
		msleep(500);
7488 7489 7490 7491
	}
	return 0;
}

7492
static void init_driver_version(char *driver_version, int len)
7493 7494
{
	memset(driver_version, 0, len);
7495
	strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1);
7496 7497
}

7498
static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable)
7499 7500 7501 7502 7503 7504 7505 7506 7507 7508 7509 7510 7511 7512 7513
{
	char *driver_version;
	int i, size = sizeof(cfgtable->driver_version);

	driver_version = kmalloc(size, GFP_KERNEL);
	if (!driver_version)
		return -ENOMEM;

	init_driver_version(driver_version, size);
	for (i = 0; i < size; i++)
		writeb(driver_version[i], &cfgtable->driver_version[i]);
	kfree(driver_version);
	return 0;
}

7514 7515
static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable,
					  unsigned char *driver_ver)
7516 7517 7518 7519 7520 7521 7522
{
	int i;

	for (i = 0; i < sizeof(cfgtable->driver_version); i++)
		driver_ver[i] = readb(&cfgtable->driver_version[i]);
}

7523
static int controller_reset_failed(struct CfgTable __iomem *cfgtable)
7524 7525 7526 7527 7528 7529 7530 7531 7532 7533 7534 7535 7536 7537 7538 7539 7540 7541 7542
{

	char *driver_ver, *old_driver_ver;
	int rc, size = sizeof(cfgtable->driver_version);

	old_driver_ver = kmalloc(2 * size, GFP_KERNEL);
	if (!old_driver_ver)
		return -ENOMEM;
	driver_ver = old_driver_ver + size;

	/* After a reset, the 32 bytes of "driver version" in the cfgtable
	 * should have been changed, otherwise we know the reset failed.
	 */
	init_driver_version(old_driver_ver, size);
	read_driver_ver_from_cfgtable(cfgtable, driver_ver);
	rc = !memcmp(driver_ver, old_driver_ver, size);
	kfree(old_driver_ver);
	return rc;
}
7543
/* This does a hard reset of the controller using PCI power management
7544
 * states or the using the doorbell register.
7545
 */
7546
static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev, u32 board_id)
7547
{
7548 7549 7550 7551 7552
	u64 cfg_offset;
	u32 cfg_base_addr;
	u64 cfg_base_addr_index;
	void __iomem *vaddr;
	unsigned long paddr;
7553
	u32 misc_fw_support;
7554
	int rc;
7555
	struct CfgTable __iomem *cfgtable;
7556
	u32 use_doorbell;
7557
	u16 command_register;
7558

7559 7560
	/* For controllers as old as the P600, this is very nearly
	 * the same thing as
7561 7562 7563 7564 7565 7566
	 *
	 * pci_save_state(pci_dev);
	 * pci_set_power_state(pci_dev, PCI_D3hot);
	 * pci_set_power_state(pci_dev, PCI_D0);
	 * pci_restore_state(pci_dev);
	 *
7567 7568 7569
	 * For controllers newer than the P600, the pci power state
	 * method of resetting doesn't work so we have another way
	 * using the doorbell register.
7570
	 */
7571

7572 7573
	if (!ctlr_is_resettable(board_id)) {
		dev_warn(&pdev->dev, "Controller not resettable\n");
7574 7575
		return -ENODEV;
	}
7576 7577 7578 7579

	/* if controller is soft- but not hard resettable... */
	if (!ctlr_is_hard_resettable(board_id))
		return -ENOTSUPP; /* try soft reset later. */
7580

7581 7582 7583
	/* Save the PCI command register */
	pci_read_config_word(pdev, 4, &command_register);
	pci_save_state(pdev);
7584

7585 7586 7587 7588 7589 7590 7591
	/* find the first memory BAR, so we can find the cfg table */
	rc = hpsa_pci_find_memory_BAR(pdev, &paddr);
	if (rc)
		return rc;
	vaddr = remap_pci_mem(paddr, 0x250);
	if (!vaddr)
		return -ENOMEM;
7592

7593 7594 7595 7596 7597 7598 7599 7600 7601 7602 7603
	/* find cfgtable in order to check if reset via doorbell is supported */
	rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr,
					&cfg_base_addr_index, &cfg_offset);
	if (rc)
		goto unmap_vaddr;
	cfgtable = remap_pci_mem(pci_resource_start(pdev,
		       cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable));
	if (!cfgtable) {
		rc = -ENOMEM;
		goto unmap_vaddr;
	}
7604 7605
	rc = write_driver_ver_to_cfgtable(cfgtable);
	if (rc)
7606
		goto unmap_cfgtable;
7607

7608 7609 7610
	/* If reset via doorbell register is supported, use that.
	 * There are two such methods.  Favor the newest method.
	 */
7611
	misc_fw_support = readl(&cfgtable->misc_fw_support);
7612 7613 7614 7615 7616 7617
	use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2;
	if (use_doorbell) {
		use_doorbell = DOORBELL_CTLR_RESET2;
	} else {
		use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET;
		if (use_doorbell) {
7618 7619
			dev_warn(&pdev->dev,
				"Soft reset not supported. Firmware update is required.\n");
7620
			rc = -ENOTSUPP; /* try soft reset */
7621 7622 7623
			goto unmap_cfgtable;
		}
	}
7624

7625 7626 7627
	rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell);
	if (rc)
		goto unmap_cfgtable;
7628

7629 7630
	pci_restore_state(pdev);
	pci_write_config_word(pdev, 4, command_register);
7631

7632 7633 7634 7635
	/* Some devices (notably the HP Smart Array 5i Controller)
	   need a little pause here */
	msleep(HPSA_POST_RESET_PAUSE_MSECS);

7636 7637 7638
	rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY);
	if (rc) {
		dev_warn(&pdev->dev,
7639
			"Failed waiting for board to become ready after hard reset\n");
7640 7641 7642
		goto unmap_cfgtable;
	}

7643 7644 7645 7646
	rc = controller_reset_failed(vaddr);
	if (rc < 0)
		goto unmap_cfgtable;
	if (rc) {
7647 7648 7649
		dev_warn(&pdev->dev, "Unable to successfully reset "
			"controller. Will try soft reset.\n");
		rc = -ENOTSUPP;
7650
	} else {
7651
		dev_info(&pdev->dev, "board ready after hard reset.\n");
7652 7653 7654 7655 7656 7657 7658 7659
	}

unmap_cfgtable:
	iounmap(cfgtable);

unmap_vaddr:
	iounmap(vaddr);
	return rc;
7660 7661 7662 7663 7664 7665 7666
}

/*
 *  We cannot read the structure directly, for portability we must use
 *   the io functions.
 *   This is for debug only.
 */
D
Don Brace 已提交
7667
static void print_cfg_table(struct device *dev, struct CfgTable __iomem *tb)
7668
{
7669
#ifdef HPSA_DEBUG
7670 7671 7672 7673 7674 7675 7676 7677 7678 7679 7680 7681 7682 7683 7684 7685 7686 7687 7688 7689
	int i;
	char temp_name[17];

	dev_info(dev, "Controller Configuration information\n");
	dev_info(dev, "------------------------------------\n");
	for (i = 0; i < 4; i++)
		temp_name[i] = readb(&(tb->Signature[i]));
	temp_name[4] = '\0';
	dev_info(dev, "   Signature = %s\n", temp_name);
	dev_info(dev, "   Spec Number = %d\n", readl(&(tb->SpecValence)));
	dev_info(dev, "   Transport methods supported = 0x%x\n",
	       readl(&(tb->TransportSupport)));
	dev_info(dev, "   Transport methods active = 0x%x\n",
	       readl(&(tb->TransportActive)));
	dev_info(dev, "   Requested transport Method = 0x%x\n",
	       readl(&(tb->HostWrite.TransportRequest)));
	dev_info(dev, "   Coalesce Interrupt Delay = 0x%x\n",
	       readl(&(tb->HostWrite.CoalIntDelay)));
	dev_info(dev, "   Coalesce Interrupt Count = 0x%x\n",
	       readl(&(tb->HostWrite.CoalIntCount)));
7690
	dev_info(dev, "   Max outstanding commands = %d\n",
7691 7692 7693 7694 7695 7696 7697 7698 7699
	       readl(&(tb->CmdsOutMax)));
	dev_info(dev, "   Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
	for (i = 0; i < 16; i++)
		temp_name[i] = readb(&(tb->ServerName[i]));
	temp_name[16] = '\0';
	dev_info(dev, "   Server Name = %s\n", temp_name);
	dev_info(dev, "   Heartbeat Counter = 0x%x\n\n\n",
		readl(&(tb->HeartBeat)));
#endif				/* HPSA_DEBUG */
7700
}
7701 7702 7703 7704 7705 7706 7707 7708 7709 7710 7711 7712 7713 7714 7715 7716 7717 7718 7719 7720 7721 7722 7723 7724 7725 7726 7727 7728 7729 7730 7731 7732 7733 7734 7735 7736

static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
{
	int i, offset, mem_type, bar_type;

	if (pci_bar_addr == PCI_BASE_ADDRESS_0)	/* looking for BAR zero? */
		return 0;
	offset = 0;
	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
		bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
		if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
			offset += 4;
		else {
			mem_type = pci_resource_flags(pdev, i) &
			    PCI_BASE_ADDRESS_MEM_TYPE_MASK;
			switch (mem_type) {
			case PCI_BASE_ADDRESS_MEM_TYPE_32:
			case PCI_BASE_ADDRESS_MEM_TYPE_1M:
				offset += 4;	/* 32 bit */
				break;
			case PCI_BASE_ADDRESS_MEM_TYPE_64:
				offset += 8;
				break;
			default:	/* reserved in PCI 2.2 */
				dev_warn(&pdev->dev,
				       "base address is invalid\n");
				return -1;
				break;
			}
		}
		if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
			return i + 1;
	}
	return -1;
}

7737 7738
static void hpsa_disable_interrupt_mode(struct ctlr_info *h)
{
7739 7740
	pci_free_irq_vectors(h->pdev);
	h->msix_vectors = 0;
7741 7742
}

7743
/* If MSI/MSI-X is supported by the kernel we will try to enable it on
7744
 * controllers that are capable. If not, we use legacy INTx mode.
7745
 */
7746
static int hpsa_interrupt_mode(struct ctlr_info *h)
7747
{
7748 7749
	unsigned int flags = PCI_IRQ_LEGACY;
	int ret;
7750 7751

	/* Some boards advertise MSI but don't really support it */
7752 7753 7754 7755 7756 7757 7758 7759 7760 7761 7762 7763
	switch (h->board_id) {
	case 0x40700E11:
	case 0x40800E11:
	case 0x40820E11:
	case 0x40830E11:
		break;
	default:
		ret = pci_alloc_irq_vectors(h->pdev, 1, MAX_REPLY_QUEUES,
				PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
		if (ret > 0) {
			h->msix_vectors = ret;
			return 0;
7764
		}
7765 7766 7767

		flags |= PCI_IRQ_MSI;
		break;
7768
	}
7769 7770 7771 7772 7773

	ret = pci_alloc_irq_vectors(h->pdev, 1, 1, flags);
	if (ret < 0)
		return ret;
	return 0;
7774 7775
}

7776
static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
7777 7778 7779 7780 7781 7782 7783 7784 7785 7786 7787 7788 7789
{
	int i;
	u32 subsystem_vendor_id, subsystem_device_id;

	subsystem_vendor_id = pdev->subsystem_vendor;
	subsystem_device_id = pdev->subsystem_device;
	*board_id = ((subsystem_device_id << 16) & 0xffff0000) |
		    subsystem_vendor_id;

	for (i = 0; i < ARRAY_SIZE(products); i++)
		if (*board_id == products[i].board_id)
			return i;

7790 7791 7792
	if ((subsystem_vendor_id != PCI_VENDOR_ID_HP &&
		subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) ||
		!hpsa_allow_any) {
7793 7794 7795 7796 7797 7798 7799
		dev_warn(&pdev->dev, "unrecognized board ID: "
			"0x%08x, ignoring.\n", *board_id);
			return -ENODEV;
	}
	return ARRAY_SIZE(products) - 1; /* generic unknown smart array */
}

7800 7801
static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
				    unsigned long *memory_bar)
7802 7803 7804 7805
{
	int i;

	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
7806
		if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
7807
			/* addressing mode bits already removed */
7808 7809
			*memory_bar = pci_resource_start(pdev, i);
			dev_dbg(&pdev->dev, "memory BAR = %lx\n",
7810 7811 7812
				*memory_bar);
			return 0;
		}
7813
	dev_warn(&pdev->dev, "no memory BAR found\n");
7814 7815 7816
	return -ENODEV;
}

7817 7818
static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
				     int wait_for_ready)
7819
{
7820
	int i, iterations;
7821
	u32 scratchpad;
7822 7823 7824 7825
	if (wait_for_ready)
		iterations = HPSA_BOARD_READY_ITERATIONS;
	else
		iterations = HPSA_BOARD_NOT_READY_ITERATIONS;
7826

7827 7828 7829 7830 7831 7832 7833 7834 7835
	for (i = 0; i < iterations; i++) {
		scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET);
		if (wait_for_ready) {
			if (scratchpad == HPSA_FIRMWARE_READY)
				return 0;
		} else {
			if (scratchpad != HPSA_FIRMWARE_READY)
				return 0;
		}
7836 7837
		msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
	}
7838
	dev_warn(&pdev->dev, "board not ready, timed out.\n");
7839 7840 7841
	return -ENODEV;
}

7842 7843 7844
static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
			       u32 *cfg_base_addr, u64 *cfg_base_addr_index,
			       u64 *cfg_offset)
7845 7846 7847 7848 7849 7850 7851 7852 7853 7854 7855 7856
{
	*cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
	*cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
	*cfg_base_addr &= (u32) 0x0000ffff;
	*cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr);
	if (*cfg_base_addr_index == -1) {
		dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
		return -ENODEV;
	}
	return 0;
}

R
Robert Elliott 已提交
7857 7858
static void hpsa_free_cfgtables(struct ctlr_info *h)
{
R
Robert Elliott 已提交
7859
	if (h->transtable) {
R
Robert Elliott 已提交
7860
		iounmap(h->transtable);
R
Robert Elliott 已提交
7861 7862 7863
		h->transtable = NULL;
	}
	if (h->cfgtable) {
R
Robert Elliott 已提交
7864
		iounmap(h->cfgtable);
R
Robert Elliott 已提交
7865 7866
		h->cfgtable = NULL;
	}
R
Robert Elliott 已提交
7867 7868 7869 7870 7871
}

/* Find and map CISS config table and transfer table
+ * several items must be unmapped (freed) later
+ * */
7872
static int hpsa_find_cfgtables(struct ctlr_info *h)
7873
{
7874 7875 7876
	u64 cfg_offset;
	u32 cfg_base_addr;
	u64 cfg_base_addr_index;
7877
	u32 trans_offset;
7878
	int rc;
7879

7880 7881 7882 7883
	rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
		&cfg_base_addr_index, &cfg_offset);
	if (rc)
		return rc;
7884
	h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
7885
		       cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
7886 7887
	if (!h->cfgtable) {
		dev_err(&h->pdev->dev, "Failed mapping cfgtable\n");
7888
		return -ENOMEM;
7889
	}
7890 7891 7892
	rc = write_driver_ver_to_cfgtable(h->cfgtable);
	if (rc)
		return rc;
7893
	/* Find performant mode table. */
7894
	trans_offset = readl(&h->cfgtable->TransMethodOffset);
7895 7896 7897
	h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
				cfg_base_addr_index)+cfg_offset+trans_offset,
				sizeof(*h->transtable));
R
Robert Elliott 已提交
7898 7899 7900
	if (!h->transtable) {
		dev_err(&h->pdev->dev, "Failed mapping transfer table\n");
		hpsa_free_cfgtables(h);
7901
		return -ENOMEM;
R
Robert Elliott 已提交
7902
	}
7903 7904 7905
	return 0;
}

7906
static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
7907
{
7908 7909 7910 7911
#define MIN_MAX_COMMANDS 16
	BUILD_BUG_ON(MIN_MAX_COMMANDS <= HPSA_NRESERVED_CMDS);

	h->max_commands = readl(&h->cfgtable->MaxPerformantModeCommands);
7912 7913 7914 7915 7916

	/* Limit commands in memory limited kdump scenario. */
	if (reset_devices && h->max_commands > 32)
		h->max_commands = 32;

7917 7918 7919 7920 7921 7922
	if (h->max_commands < MIN_MAX_COMMANDS) {
		dev_warn(&h->pdev->dev,
			"Controller reports max supported commands of %d Using %d instead. Ensure that firmware is up to date.\n",
			h->max_commands,
			MIN_MAX_COMMANDS);
		h->max_commands = MIN_MAX_COMMANDS;
7923 7924 7925
	}
}

7926 7927 7928 7929 7930 7931 7932 7933 7934
/* If the controller reports that the total max sg entries is greater than 512,
 * then we know that chained SG blocks work.  (Original smart arrays did not
 * support chained SG blocks and would return zero for max sg entries.)
 */
static int hpsa_supports_chained_sg_blocks(struct ctlr_info *h)
{
	return h->maxsgentries > 512;
}

7935 7936 7937 7938
/* Interrogate the hardware for some limits:
 * max commands, max SG elements without chaining, and with chaining,
 * SG chain block size, etc.
 */
7939
static void hpsa_find_board_params(struct ctlr_info *h)
7940
{
7941
	hpsa_get_max_perf_mode_cmds(h);
7942
	h->nr_cmds = h->max_commands;
7943
	h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements));
7944
	h->fw_support = readl(&(h->cfgtable->misc_fw_support));
7945 7946
	if (hpsa_supports_chained_sg_blocks(h)) {
		/* Limit in-command s/g elements to 32 save dma'able memory. */
7947
		h->max_cmd_sg_entries = 32;
7948
		h->chainsize = h->maxsgentries - h->max_cmd_sg_entries;
7949 7950
		h->maxsgentries--; /* save one for chain pointer */
	} else {
7951 7952 7953 7954 7955 7956
		/*
		 * Original smart arrays supported at most 31 s/g entries
		 * embedded inline in the command (trying to use more
		 * would lock up the controller)
		 */
		h->max_cmd_sg_entries = 31;
7957
		h->maxsgentries = 31; /* default to traditional values */
7958
		h->chainsize = 0;
7959
	}
7960 7961 7962

	/* Find out what task management functions are supported and cache */
	h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags));
7963 7964 7965 7966
	if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags))
		dev_warn(&h->pdev->dev, "Physical aborts not supported\n");
	if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
		dev_warn(&h->pdev->dev, "Logical aborts not supported\n");
7967 7968
	if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags))
		dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n");
7969 7970
}

7971 7972
static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
{
A
Akinobu Mita 已提交
7973
	if (!check_signature(h->cfgtable->Signature, "CISS", 4)) {
7974
		dev_err(&h->pdev->dev, "not a valid CISS config table\n");
7975 7976 7977 7978 7979
		return false;
	}
	return true;
}

7980
static inline void hpsa_set_driver_support_bits(struct ctlr_info *h)
7981
{
7982
	u32 driver_support;
7983

7984
	driver_support = readl(&(h->cfgtable->driver_support));
A
Arnd Bergmann 已提交
7985 7986
	/* Need to enable prefetch in the SCSI core for 6400 in x86 */
#ifdef CONFIG_X86
7987
	driver_support |= ENABLE_SCSI_PREFETCH;
7988
#endif
7989 7990
	driver_support |= ENABLE_UNIT_ATTN;
	writel(driver_support, &(h->cfgtable->driver_support));
7991 7992
}

7993 7994 7995 7996 7997 7998 7999 8000 8001 8002 8003 8004 8005 8006
/* Disable DMA prefetch for the P600.  Otherwise an ASIC bug may result
 * in a prefetch beyond physical memory.
 */
static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
{
	u32 dma_prefetch;

	if (h->board_id != 0x3225103C)
		return;
	dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
	dma_prefetch |= 0x8000;
	writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
}

8007
static int hpsa_wait_for_clear_event_notify_ack(struct ctlr_info *h)
8008 8009 8010 8011 8012
{
	int i;
	u32 doorbell_value;
	unsigned long flags;
	/* wait until the clear_event_notify bit 6 is cleared by controller. */
8013
	for (i = 0; i < MAX_CLEAR_EVENT_WAIT; i++) {
8014 8015 8016 8017
		spin_lock_irqsave(&h->lock, flags);
		doorbell_value = readl(h->vaddr + SA5_DOORBELL);
		spin_unlock_irqrestore(&h->lock, flags);
		if (!(doorbell_value & DOORBELL_CLEAR_EVENTS))
8018
			goto done;
8019
		/* delay and try again */
8020
		msleep(CLEAR_EVENT_WAIT_INTERVAL);
8021
	}
8022 8023 8024
	return -ENODEV;
done:
	return 0;
8025 8026
}

8027
static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
8028 8029
{
	int i;
8030 8031
	u32 doorbell_value;
	unsigned long flags;
8032 8033 8034 8035 8036

	/* under certain very rare conditions, this can take awhile.
	 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
	 * as we enter this code.)
	 */
8037
	for (i = 0; i < MAX_MODE_CHANGE_WAIT; i++) {
8038 8039
		if (h->remove_in_progress)
			goto done;
8040 8041 8042
		spin_lock_irqsave(&h->lock, flags);
		doorbell_value = readl(h->vaddr + SA5_DOORBELL);
		spin_unlock_irqrestore(&h->lock, flags);
D
Dan Carpenter 已提交
8043
		if (!(doorbell_value & CFGTBL_ChangeReq))
8044
			goto done;
8045
		/* delay and try again */
8046
		msleep(MODE_CHANGE_WAIT_INTERVAL);
8047
	}
8048 8049 8050
	return -ENODEV;
done:
	return 0;
8051 8052
}

8053
/* return -ENODEV or other reason on error, 0 on success */
8054
static int hpsa_enter_simple_mode(struct ctlr_info *h)
8055 8056 8057 8058 8059 8060 8061 8062
{
	u32 trans_support;

	trans_support = readl(&(h->cfgtable->TransportSupport));
	if (!(trans_support & SIMPLE_MODE))
		return -ENOTSUPP;

	h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
8063

8064 8065
	/* Update the field, and then ring the doorbell */
	writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
8066
	writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
8067
	writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
8068 8069
	if (hpsa_wait_for_mode_change_ack(h))
		goto error;
8070
	print_cfg_table(&h->pdev->dev, h->cfgtable);
8071 8072
	if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
		goto error;
8073
	h->transMethod = CFGTBL_Trans_Simple;
8074
	return 0;
8075
error:
8076
	dev_err(&h->pdev->dev, "failed to enter simple mode\n");
8077
	return -ENODEV;
8078 8079
}

R
Robert Elliott 已提交
8080 8081 8082 8083 8084
/* free items allocated or mapped by hpsa_pci_init */
static void hpsa_free_pci_init(struct ctlr_info *h)
{
	hpsa_free_cfgtables(h);			/* pci_init 4 */
	iounmap(h->vaddr);			/* pci_init 3 */
R
Robert Elliott 已提交
8085
	h->vaddr = NULL;
R
Robert Elliott 已提交
8086
	hpsa_disable_interrupt_mode(h);		/* pci_init 2 */
8087 8088 8089 8090
	/*
	 * call pci_disable_device before pci_release_regions per
	 * Documentation/PCI/pci.txt
	 */
R
Robert Elliott 已提交
8091
	pci_disable_device(h->pdev);		/* pci_init 1 */
8092
	pci_release_regions(h->pdev);		/* pci_init 2 */
R
Robert Elliott 已提交
8093 8094 8095
}

/* several items must be freed later */
8096
static int hpsa_pci_init(struct ctlr_info *h)
8097
{
8098
	int prod_index, err;
8099

8100 8101
	prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id);
	if (prod_index < 0)
8102
		return prod_index;
8103 8104
	h->product_name = products[prod_index].product_name;
	h->access = *(products[prod_index].access);
8105

S
Stephen Cameron 已提交
8106 8107 8108
	h->needs_abort_tags_swizzled =
		ctlr_needs_abort_tags_swizzled(h->board_id);

M
Matthew Garrett 已提交
8109 8110 8111
	pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
			       PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);

8112
	err = pci_enable_device(h->pdev);
8113
	if (err) {
R
Robert Elliott 已提交
8114
		dev_err(&h->pdev->dev, "failed to enable PCI device\n");
8115
		pci_disable_device(h->pdev);
8116 8117 8118
		return err;
	}

8119
	err = pci_request_regions(h->pdev, HPSA);
8120
	if (err) {
8121
		dev_err(&h->pdev->dev,
R
Robert Elliott 已提交
8122
			"failed to obtain PCI resources\n");
8123 8124
		pci_disable_device(h->pdev);
		return err;
8125
	}
8126 8127 8128

	pci_set_master(h->pdev);

8129 8130 8131
	err = hpsa_interrupt_mode(h);
	if (err)
		goto clean1;
8132
	err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);
8133
	if (err)
R
Robert Elliott 已提交
8134
		goto clean2;	/* intmode+region, pci */
8135
	h->vaddr = remap_pci_mem(h->paddr, 0x250);
8136
	if (!h->vaddr) {
R
Robert Elliott 已提交
8137
		dev_err(&h->pdev->dev, "failed to remap PCI mem\n");
8138
		err = -ENOMEM;
R
Robert Elliott 已提交
8139
		goto clean2;	/* intmode+region, pci */
8140
	}
8141
	err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
8142
	if (err)
R
Robert Elliott 已提交
8143
		goto clean3;	/* vaddr, intmode+region, pci */
8144 8145
	err = hpsa_find_cfgtables(h);
	if (err)
R
Robert Elliott 已提交
8146
		goto clean3;	/* vaddr, intmode+region, pci */
8147
	hpsa_find_board_params(h);
8148

8149
	if (!hpsa_CISS_signature_present(h)) {
8150
		err = -ENODEV;
R
Robert Elliott 已提交
8151
		goto clean4;	/* cfgtables, vaddr, intmode+region, pci */
8152
	}
8153
	hpsa_set_driver_support_bits(h);
8154
	hpsa_p600_dma_prefetch_quirk(h);
8155 8156
	err = hpsa_enter_simple_mode(h);
	if (err)
R
Robert Elliott 已提交
8157
		goto clean4;	/* cfgtables, vaddr, intmode+region, pci */
8158 8159
	return 0;

R
Robert Elliott 已提交
8160 8161 8162 8163
clean4:	/* cfgtables, vaddr, intmode+region, pci */
	hpsa_free_cfgtables(h);
clean3:	/* vaddr, intmode+region, pci */
	iounmap(h->vaddr);
R
Robert Elliott 已提交
8164
	h->vaddr = NULL;
R
Robert Elliott 已提交
8165 8166
clean2:	/* intmode+region, pci */
	hpsa_disable_interrupt_mode(h);
8167
clean1:
8168 8169 8170 8171
	/*
	 * call pci_disable_device before pci_release_regions per
	 * Documentation/PCI/pci.txt
	 */
R
Robert Elliott 已提交
8172
	pci_disable_device(h->pdev);
8173
	pci_release_regions(h->pdev);
8174 8175 8176
	return err;
}

8177
static void hpsa_hba_inquiry(struct ctlr_info *h)
8178 8179 8180 8181 8182 8183 8184 8185 8186 8187 8188 8189 8190 8191 8192
{
	int rc;

#define HBA_INQUIRY_BYTE_COUNT 64
	h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL);
	if (!h->hba_inquiry_data)
		return;
	rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0,
		h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT);
	if (rc != 0) {
		kfree(h->hba_inquiry_data);
		h->hba_inquiry_data = NULL;
	}
}

8193
static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id)
8194
{
8195
	int rc, i;
8196
	void __iomem *vaddr;
8197 8198 8199 8200

	if (!reset_devices)
		return 0;

8201 8202 8203 8204 8205 8206 8207 8208 8209 8210 8211 8212 8213 8214 8215 8216
	/* kdump kernel is loading, we don't know in which state is
	 * the pci interface. The dev->enable_cnt is equal zero
	 * so we call enable+disable, wait a while and switch it on.
	 */
	rc = pci_enable_device(pdev);
	if (rc) {
		dev_warn(&pdev->dev, "Failed to enable PCI device\n");
		return -ENODEV;
	}
	pci_disable_device(pdev);
	msleep(260);			/* a randomly chosen number */
	rc = pci_enable_device(pdev);
	if (rc) {
		dev_warn(&pdev->dev, "failed to enable device.\n");
		return -ENODEV;
	}
8217

8218
	pci_set_master(pdev);
8219

8220 8221 8222 8223 8224 8225 8226 8227
	vaddr = pci_ioremap_bar(pdev, 0);
	if (vaddr == NULL) {
		rc = -ENOMEM;
		goto out_disable;
	}
	writel(SA5_INTR_OFF, vaddr + SA5_REPLY_INTR_MASK_OFFSET);
	iounmap(vaddr);

8228
	/* Reset the controller with a PCI power-cycle or via doorbell */
8229
	rc = hpsa_kdump_hard_reset_controller(pdev, board_id);
8230

8231 8232
	/* -ENOTSUPP here means we cannot reset the controller
	 * but it's already (and still) up and running in
8233 8234
	 * "performant mode".  Or, it might be 640x, which can't reset
	 * due to concerns about shared bbwc between 6402/6404 pair.
8235
	 */
8236
	if (rc)
8237
		goto out_disable;
8238 8239

	/* Now try to get the controller to respond to a no-op */
8240
	dev_info(&pdev->dev, "Waiting for controller to respond to no-op\n");
8241 8242 8243 8244 8245 8246 8247
	for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
		if (hpsa_noop(pdev) == 0)
			break;
		else
			dev_warn(&pdev->dev, "no-op failed%s\n",
					(i < 11 ? "; re-trying" : ""));
	}
8248 8249 8250 8251 8252

out_disable:

	pci_disable_device(pdev);
	return rc;
8253 8254
}

8255 8256 8257
static void hpsa_free_cmd_pool(struct ctlr_info *h)
{
	kfree(h->cmd_pool_bits);
R
Robert Elliott 已提交
8258 8259
	h->cmd_pool_bits = NULL;
	if (h->cmd_pool) {
8260 8261 8262 8263
		pci_free_consistent(h->pdev,
				h->nr_cmds * sizeof(struct CommandList),
				h->cmd_pool,
				h->cmd_pool_dhandle);
R
Robert Elliott 已提交
8264 8265 8266 8267
		h->cmd_pool = NULL;
		h->cmd_pool_dhandle = 0;
	}
	if (h->errinfo_pool) {
8268 8269 8270 8271
		pci_free_consistent(h->pdev,
				h->nr_cmds * sizeof(struct ErrorInfo),
				h->errinfo_pool,
				h->errinfo_pool_dhandle);
R
Robert Elliott 已提交
8272 8273 8274
		h->errinfo_pool = NULL;
		h->errinfo_pool_dhandle = 0;
	}
8275 8276
}

8277
static int hpsa_alloc_cmd_pool(struct ctlr_info *h)
8278 8279 8280 8281 8282 8283 8284 8285 8286 8287 8288 8289 8290 8291
{
	h->cmd_pool_bits = kzalloc(
		DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) *
		sizeof(unsigned long), GFP_KERNEL);
	h->cmd_pool = pci_alloc_consistent(h->pdev,
		    h->nr_cmds * sizeof(*h->cmd_pool),
		    &(h->cmd_pool_dhandle));
	h->errinfo_pool = pci_alloc_consistent(h->pdev,
		    h->nr_cmds * sizeof(*h->errinfo_pool),
		    &(h->errinfo_pool_dhandle));
	if ((h->cmd_pool_bits == NULL)
	    || (h->cmd_pool == NULL)
	    || (h->errinfo_pool == NULL)) {
		dev_err(&h->pdev->dev, "out of memory in %s", __func__);
8292
		goto clean_up;
8293
	}
8294
	hpsa_preinitialize_commands(h);
8295
	return 0;
8296 8297 8298
clean_up:
	hpsa_free_cmd_pool(h);
	return -ENOMEM;
8299 8300
}

8301 8302 8303 8304 8305
/* clear affinity hints and free MSI-X, MSI, or legacy INTx vectors */
static void hpsa_free_irqs(struct ctlr_info *h)
{
	int i;

8306
	if (!h->msix_vectors || h->intr_mode != PERF_MODE_INT) {
8307
		/* Single reply queue, only one irq to free */
8308
		free_irq(pci_irq_vector(h->pdev, 0), &h->q[h->intr_mode]);
8309
		h->q[h->intr_mode] = 0;
8310 8311 8312
		return;
	}

8313 8314
	for (i = 0; i < h->msix_vectors; i++) {
		free_irq(pci_irq_vector(h->pdev, i), &h->q[i]);
R
Robert Elliott 已提交
8315
		h->q[i] = 0;
8316
	}
8317 8318
	for (; i < MAX_REPLY_QUEUES; i++)
		h->q[i] = 0;
8319 8320
}

8321 8322
/* returns 0 on success; cleans up and returns -Enn on error */
static int hpsa_request_irqs(struct ctlr_info *h,
8323 8324 8325
	irqreturn_t (*msixhandler)(int, void *),
	irqreturn_t (*intxhandler)(int, void *))
{
8326
	int rc, i;
8327

8328 8329 8330 8331 8332 8333 8334
	/*
	 * initialize h->q[x] = x so that interrupt handlers know which
	 * queue to process.
	 */
	for (i = 0; i < MAX_REPLY_QUEUES; i++)
		h->q[i] = (u8) i;

8335
	if (h->intr_mode == PERF_MODE_INT && h->msix_vectors > 0) {
8336
		/* If performant mode and MSI-X, use multiple reply queues */
8337
		for (i = 0; i < h->msix_vectors; i++) {
8338
			sprintf(h->intrname[i], "%s-msix%d", h->devname, i);
8339
			rc = request_irq(pci_irq_vector(h->pdev, i), msixhandler,
8340
					0, h->intrname[i],
8341
					&h->q[i]);
8342 8343 8344 8345 8346
			if (rc) {
				int j;

				dev_err(&h->pdev->dev,
					"failed to get irq %d for %s\n",
8347
				       pci_irq_vector(h->pdev, i), h->devname);
8348
				for (j = 0; j < i; j++) {
8349
					free_irq(pci_irq_vector(h->pdev, j), &h->q[j]);
8350 8351 8352 8353 8354 8355 8356
					h->q[j] = 0;
				}
				for (; j < MAX_REPLY_QUEUES; j++)
					h->q[j] = 0;
				return rc;
			}
		}
8357 8358
	} else {
		/* Use single reply pool */
8359 8360 8361 8362
		if (h->msix_vectors > 0 || h->pdev->msi_enabled) {
			sprintf(h->intrname[0], "%s-msi%s", h->devname,
				h->msix_vectors ? "x" : "");
			rc = request_irq(pci_irq_vector(h->pdev, 0),
8363
				msixhandler, 0,
8364
				h->intrname[0],
8365 8366
				&h->q[h->intr_mode]);
		} else {
8367 8368
			sprintf(h->intrname[h->intr_mode],
				"%s-intx", h->devname);
8369
			rc = request_irq(pci_irq_vector(h->pdev, 0),
8370
				intxhandler, IRQF_SHARED,
8371
				h->intrname[0],
8372 8373 8374
				&h->q[h->intr_mode]);
		}
	}
8375
	if (rc) {
R
Robert Elliott 已提交
8376
		dev_err(&h->pdev->dev, "failed to get irq %d for %s\n",
8377
		       pci_irq_vector(h->pdev, 0), h->devname);
R
Robert Elliott 已提交
8378
		hpsa_free_irqs(h);
8379 8380 8381 8382 8383
		return -ENODEV;
	}
	return 0;
}

8384
static int hpsa_kdump_soft_reset(struct ctlr_info *h)
8385
{
8386
	int rc;
8387
	hpsa_send_host_reset(h, RAID_CTLR_LUNID, HPSA_RESET_TYPE_CONTROLLER);
8388 8389

	dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n");
8390 8391
	rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY);
	if (rc) {
8392
		dev_warn(&h->pdev->dev, "Soft reset had no effect.\n");
8393
		return rc;
8394 8395 8396
	}

	dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n");
8397 8398
	rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
	if (rc) {
8399 8400
		dev_warn(&h->pdev->dev, "Board failed to become ready "
			"after soft reset.\n");
8401
		return rc;
8402 8403 8404 8405 8406
	}

	return 0;
}

8407 8408 8409 8410 8411 8412 8413
static void hpsa_free_reply_queues(struct ctlr_info *h)
{
	int i;

	for (i = 0; i < h->nreply_queues; i++) {
		if (!h->reply_queue[i].head)
			continue;
8414 8415 8416 8417
		pci_free_consistent(h->pdev,
					h->reply_queue_size,
					h->reply_queue[i].head,
					h->reply_queue[i].busaddr);
8418 8419 8420
		h->reply_queue[i].head = NULL;
		h->reply_queue[i].busaddr = 0;
	}
R
Robert Elliott 已提交
8421
	h->reply_queue_size = 0;
8422 8423
}

8424 8425
static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h)
{
R
Robert Elliott 已提交
8426 8427 8428 8429
	hpsa_free_performant_mode(h);		/* init_one 7 */
	hpsa_free_sg_chain_blocks(h);		/* init_one 6 */
	hpsa_free_cmd_pool(h);			/* init_one 5 */
	hpsa_free_irqs(h);			/* init_one 4 */
8430 8431 8432
	scsi_host_put(h->scsi_host);		/* init_one 3 */
	h->scsi_host = NULL;			/* init_one 3 */
	hpsa_free_pci_init(h);			/* init_one 2_5 */
8433 8434 8435 8436 8437 8438 8439 8440 8441 8442
	free_percpu(h->lockup_detected);	/* init_one 2 */
	h->lockup_detected = NULL;		/* init_one 2 */
	if (h->resubmit_wq) {
		destroy_workqueue(h->resubmit_wq);	/* init_one 1 */
		h->resubmit_wq = NULL;
	}
	if (h->rescan_ctlr_wq) {
		destroy_workqueue(h->rescan_ctlr_wq);
		h->rescan_ctlr_wq = NULL;
	}
R
Robert Elliott 已提交
8443
	kfree(h);				/* init_one 1 */
8444 8445
}

8446
/* Called when controller lockup detected. */
8447
static void fail_all_outstanding_cmds(struct ctlr_info *h)
8448
{
8449 8450
	int i, refcount;
	struct CommandList *c;
8451
	int failcount = 0;
8452

8453
	flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */
8454 8455
	for (i = 0; i < h->nr_cmds; i++) {
		c = h->cmd_pool + i;
8456 8457
		refcount = atomic_inc_return(&c->refcount);
		if (refcount > 1) {
8458
			c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
8459
			finish_cmd(c);
8460
			atomic_dec(&h->commands_outstanding);
8461
			failcount++;
8462 8463
		}
		cmd_free(h, c);
8464
	}
8465 8466
	dev_warn(&h->pdev->dev,
		"failed %d commands in fail_all\n", failcount);
8467 8468
}

8469 8470
static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value)
{
8471
	int cpu;
8472

8473
	for_each_online_cpu(cpu) {
8474 8475 8476 8477 8478 8479 8480
		u32 *lockup_detected;
		lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
		*lockup_detected = value;
	}
	wmb(); /* be sure the per-cpu variables are out to memory */
}

8481 8482 8483
static void controller_lockup_detected(struct ctlr_info *h)
{
	unsigned long flags;
8484
	u32 lockup_detected;
8485 8486 8487

	h->access.set_intr_mask(h, HPSA_INTR_OFF);
	spin_lock_irqsave(&h->lock, flags);
8488 8489 8490 8491
	lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
	if (!lockup_detected) {
		/* no heartbeat, but controller gave us a zero. */
		dev_warn(&h->pdev->dev,
8492 8493
			"lockup detected after %d but scratchpad register is zero\n",
			h->heartbeat_sample_interval / HZ);
8494 8495 8496
		lockup_detected = 0xffffffff;
	}
	set_lockup_detected_for_all_cpus(h, lockup_detected);
8497
	spin_unlock_irqrestore(&h->lock, flags);
8498 8499
	dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n",
			lockup_detected, h->heartbeat_sample_interval / HZ);
8500
	pci_disable_device(h->pdev);
8501
	fail_all_outstanding_cmds(h);
8502 8503
}

8504
static int detect_controller_lockup(struct ctlr_info *h)
8505 8506 8507 8508 8509 8510 8511 8512
{
	u64 now;
	u32 heartbeat;
	unsigned long flags;

	now = get_jiffies_64();
	/* If we've received an interrupt recently, we're ok. */
	if (time_after64(h->last_intr_timestamp +
8513
				(h->heartbeat_sample_interval), now))
8514
		return false;
8515 8516 8517 8518 8519 8520 8521

	/*
	 * If we've already checked the heartbeat recently, we're ok.
	 * This could happen if someone sends us a signal. We
	 * otherwise don't care about signals in this thread.
	 */
	if (time_after64(h->last_heartbeat_timestamp +
8522
				(h->heartbeat_sample_interval), now))
8523
		return false;
8524 8525 8526 8527 8528 8529 8530

	/* If heartbeat has not changed since we last looked, we're not ok. */
	spin_lock_irqsave(&h->lock, flags);
	heartbeat = readl(&h->cfgtable->HeartBeat);
	spin_unlock_irqrestore(&h->lock, flags);
	if (h->last_heartbeat == heartbeat) {
		controller_lockup_detected(h);
8531
		return true;
8532 8533 8534 8535 8536
	}

	/* We're ok. */
	h->last_heartbeat = heartbeat;
	h->last_heartbeat_timestamp = now;
8537
	return false;
8538 8539
}

8540
static void hpsa_ack_ctlr_events(struct ctlr_info *h)
8541 8542 8543 8544
{
	int i;
	char *event_type;

8545 8546 8547
	if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
		return;

8548
	/* Ask the controller to clear the events we're handling. */
8549 8550
	if ((h->transMethod & (CFGTBL_Trans_io_accel1
			| CFGTBL_Trans_io_accel2)) &&
8551 8552 8553 8554 8555 8556 8557 8558 8559
		(h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE ||
		 h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)) {

		if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE)
			event_type = "state change";
		if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)
			event_type = "configuration change";
		/* Stop sending new RAID offload reqs via the IO accelerator */
		scsi_block_requests(h->scsi_host);
8560
		for (i = 0; i < h->ndevices; i++) {
8561
			h->dev[i]->offload_enabled = 0;
8562 8563
			h->dev[i]->offload_to_be_enabled = 0;
		}
8564
		hpsa_drain_accel_commands(h);
8565 8566 8567 8568 8569 8570 8571 8572 8573 8574 8575 8576 8577 8578 8579 8580 8581 8582 8583 8584
		/* Set 'accelerator path config change' bit */
		dev_warn(&h->pdev->dev,
			"Acknowledging event: 0x%08x (HP SSD Smart Path %s)\n",
			h->events, event_type);
		writel(h->events, &(h->cfgtable->clear_event_notify));
		/* Set the "clear event notify field update" bit 6 */
		writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
		/* Wait until ctlr clears 'clear event notify field', bit 6 */
		hpsa_wait_for_clear_event_notify_ack(h);
		scsi_unblock_requests(h->scsi_host);
	} else {
		/* Acknowledge controller notification events. */
		writel(h->events, &(h->cfgtable->clear_event_notify));
		writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
		hpsa_wait_for_clear_event_notify_ack(h);
#if 0
		writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
		hpsa_wait_for_mode_change_ack(h);
#endif
	}
8585
	return;
8586 8587 8588 8589
}

/* Check a register on the controller to see if there are configuration
 * changes (added/changed/removed logical drives, etc.) which mean that
8590 8591
 * we should rescan the controller for devices.
 * Also check flag for driver-initiated rescan.
8592
 */
8593
static int hpsa_ctlr_needs_rescan(struct ctlr_info *h)
8594
{
D
Don Brace 已提交
8595 8596 8597 8598 8599
	if (h->drv_req_rescan) {
		h->drv_req_rescan = 0;
		return 1;
	}

8600
	if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
8601
		return 0;
8602 8603

	h->events = readl(&(h->cfgtable->event_notify));
8604 8605
	return h->events & RESCAN_REQUIRED_EVENT_BITS;
}
8606

8607 8608 8609 8610 8611 8612 8613 8614 8615 8616 8617 8618 8619 8620
/*
 * Check if any of the offline devices have become ready
 */
static int hpsa_offline_devices_ready(struct ctlr_info *h)
{
	unsigned long flags;
	struct offline_device_entry *d;
	struct list_head *this, *tmp;

	spin_lock_irqsave(&h->offline_device_lock, flags);
	list_for_each_safe(this, tmp, &h->offline_device_list) {
		d = list_entry(this, struct offline_device_entry,
				offline_list);
		spin_unlock_irqrestore(&h->offline_device_lock, flags);
8621 8622 8623 8624
		if (!hpsa_volume_offline(h, d->scsi3addr)) {
			spin_lock_irqsave(&h->offline_device_lock, flags);
			list_del(&d->offline_list);
			spin_unlock_irqrestore(&h->offline_device_lock, flags);
8625
			return 1;
8626
		}
8627 8628 8629 8630
		spin_lock_irqsave(&h->offline_device_lock, flags);
	}
	spin_unlock_irqrestore(&h->offline_device_lock, flags);
	return 0;
8631 8632
}

8633 8634 8635 8636 8637 8638 8639 8640 8641 8642
static int hpsa_luns_changed(struct ctlr_info *h)
{
	int rc = 1; /* assume there are changes */
	struct ReportLUNdata *logdev = NULL;

	/* if we can't find out if lun data has changed,
	 * assume that it has.
	 */

	if (!h->lastlogicals)
8643
		return rc;
8644 8645

	logdev = kzalloc(sizeof(*logdev), GFP_KERNEL);
8646 8647 8648
	if (!logdev)
		return rc;

8649 8650 8651 8652 8653 8654 8655 8656 8657 8658 8659 8660 8661 8662 8663 8664 8665
	if (hpsa_scsi_do_report_luns(h, 1, logdev, sizeof(*logdev), 0)) {
		dev_warn(&h->pdev->dev,
			"report luns failed, can't track lun changes.\n");
		goto out;
	}
	if (memcmp(logdev, h->lastlogicals, sizeof(*logdev))) {
		dev_info(&h->pdev->dev,
			"Lun changes detected.\n");
		memcpy(h->lastlogicals, logdev, sizeof(*logdev));
		goto out;
	} else
		rc = 0; /* no changes detected. */
out:
	kfree(logdev);
	return rc;
}

8666
static void hpsa_rescan_ctlr_worker(struct work_struct *work)
8667 8668
{
	unsigned long flags;
8669
	struct ctlr_info *h = container_of(to_delayed_work(work),
8670 8671 8672 8673
					struct ctlr_info, rescan_ctlr_work);


	if (h->remove_in_progress)
8674
		return;
8675

D
Don Brace 已提交
8676 8677 8678
	/*
	 * Do the scan after the reset
	 */
D
Don Brace 已提交
8679
	spin_lock_irqsave(&h->reset_lock, flags);
D
Don Brace 已提交
8680 8681
	if (h->reset_in_progress) {
		h->drv_req_rescan = 1;
D
Don Brace 已提交
8682
		spin_unlock_irqrestore(&h->reset_lock, flags);
D
Don Brace 已提交
8683 8684
		return;
	}
D
Don Brace 已提交
8685
	spin_unlock_irqrestore(&h->reset_lock, flags);
D
Don Brace 已提交
8686

8687 8688 8689 8690 8691
	if (hpsa_ctlr_needs_rescan(h) || hpsa_offline_devices_ready(h)) {
		scsi_host_get(h->scsi_host);
		hpsa_ack_ctlr_events(h);
		hpsa_scan_start(h->scsi_host);
		scsi_host_put(h->scsi_host);
8692
	} else if (h->discovery_polling) {
S
Scott Teel 已提交
8693
		hpsa_disable_rld_caching(h);
8694 8695 8696 8697 8698 8699 8700 8701 8702 8703 8704
		if (hpsa_luns_changed(h)) {
			struct Scsi_Host *sh = NULL;

			dev_info(&h->pdev->dev,
				"driver discovery polling rescan.\n");
			sh = scsi_host_get(h->scsi_host);
			if (sh != NULL) {
				hpsa_scan_start(sh);
				scsi_host_put(sh);
			}
		}
8705
	}
8706
	spin_lock_irqsave(&h->lock, flags);
8707 8708 8709 8710 8711 8712 8713 8714 8715 8716 8717 8718 8719 8720
	if (!h->remove_in_progress)
		queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
				h->heartbeat_sample_interval);
	spin_unlock_irqrestore(&h->lock, flags);
}

static void hpsa_monitor_ctlr_worker(struct work_struct *work)
{
	unsigned long flags;
	struct ctlr_info *h = container_of(to_delayed_work(work),
					struct ctlr_info, monitor_ctlr_work);

	detect_controller_lockup(h);
	if (lockup_detected(h))
8721
		return;
8722 8723 8724 8725

	spin_lock_irqsave(&h->lock, flags);
	if (!h->remove_in_progress)
		schedule_delayed_work(&h->monitor_ctlr_work,
8726 8727
				h->heartbeat_sample_interval);
	spin_unlock_irqrestore(&h->lock, flags);
8728 8729
}

8730 8731 8732 8733 8734
static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h,
						char *name)
{
	struct workqueue_struct *wq = NULL;

8735
	wq = alloc_ordered_workqueue("%s_%d_hpsa", 0, name, h->ctlr);
8736 8737 8738 8739 8740 8741
	if (!wq)
		dev_err(&h->pdev->dev, "failed to create %s workqueue\n", name);

	return wq;
}

8742
static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
8743
{
8744
	int dac, rc;
8745
	struct ctlr_info *h;
8746 8747
	int try_soft_reset = 0;
	unsigned long flags;
8748
	u32 board_id;
8749 8750 8751 8752

	if (number_of_controllers == 0)
		printk(KERN_INFO DRIVER_NAME "\n");

8753 8754 8755 8756 8757 8758 8759
	rc = hpsa_lookup_board_id(pdev, &board_id);
	if (rc < 0) {
		dev_warn(&pdev->dev, "Board ID not found\n");
		return rc;
	}

	rc = hpsa_init_reset_devices(pdev, board_id);
8760 8761 8762 8763 8764 8765 8766 8767 8768 8769 8770 8771 8772
	if (rc) {
		if (rc != -ENOTSUPP)
			return rc;
		/* If the reset fails in a particular way (it has no way to do
		 * a proper hard reset, so returns -ENOTSUPP) we can try to do
		 * a soft reset once we get the controller configured up to the
		 * point that it can accept a command.
		 */
		try_soft_reset = 1;
		rc = 0;
	}

reinit_after_soft_reset:
8773

8774 8775 8776 8777 8778
	/* Command structures must be aligned on a 32-byte boundary because
	 * the 5 lower bits of the address are used by the hardware. and by
	 * the driver.  See comments in hpsa.h for more info.
	 */
	BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
8779
	h = kzalloc(sizeof(*h), GFP_KERNEL);
R
Robert Elliott 已提交
8780 8781
	if (!h) {
		dev_err(&pdev->dev, "Failed to allocate controller head\n");
8782
		return -ENOMEM;
R
Robert Elliott 已提交
8783
	}
8784

8785
	h->pdev = pdev;
R
Robert Elliott 已提交
8786

8787
	h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT;
8788
	INIT_LIST_HEAD(&h->offline_device_list);
8789
	spin_lock_init(&h->lock);
8790
	spin_lock_init(&h->offline_device_lock);
8791
	spin_lock_init(&h->scan_lock);
D
Don Brace 已提交
8792
	spin_lock_init(&h->reset_lock);
8793
	atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS);
S
Stephen Cameron 已提交
8794
	atomic_set(&h->abort_cmds_available, HPSA_CMDS_RESERVED_FOR_ABORTS);
8795 8796 8797

	/* Allocate and clear per-cpu variable lockup_detected */
	h->lockup_detected = alloc_percpu(u32);
8798
	if (!h->lockup_detected) {
R
Robert Elliott 已提交
8799
		dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n");
8800
		rc = -ENOMEM;
8801
		goto clean1;	/* aer/h */
8802
	}
8803 8804
	set_lockup_detected_for_all_cpus(h, 0);

8805
	rc = hpsa_pci_init(h);
R
Robert Elliott 已提交
8806
	if (rc)
8807 8808 8809 8810 8811 8812 8813
		goto clean2;	/* lu, aer/h */

	/* relies on h-> settings made by hpsa_pci_init, including
	 * interrupt_mode h->intr */
	rc = hpsa_scsi_host_alloc(h);
	if (rc)
		goto clean2_5;	/* pci, lu, aer/h */
8814

8815
	sprintf(h->devname, HPSA "%d", h->scsi_host->host_no);
8816 8817 8818 8819
	h->ctlr = number_of_controllers;
	number_of_controllers++;

	/* configure PCI DMA stuff */
8820 8821
	rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
	if (rc == 0) {
8822
		dac = 1;
8823 8824 8825 8826 8827 8828
	} else {
		rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
		if (rc == 0) {
			dac = 0;
		} else {
			dev_err(&pdev->dev, "no suitable DMA available\n");
8829
			goto clean3;	/* shost, pci, lu, aer/h */
8830
		}
8831 8832 8833 8834
	}

	/* make sure the board interrupts are off */
	h->access.set_intr_mask(h, HPSA_INTR_OFF);
8835

R
Robert Elliott 已提交
8836 8837
	rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx);
	if (rc)
8838
		goto clean3;	/* shost, pci, lu, aer/h */
8839
	rc = hpsa_alloc_cmd_pool(h);
8840
	if (rc)
8841
		goto clean4;	/* irq, shost, pci, lu, aer/h */
R
Robert Elliott 已提交
8842 8843
	rc = hpsa_alloc_sg_chain_blocks(h);
	if (rc)
8844
		goto clean5;	/* cmd, irq, shost, pci, lu, aer/h */
8845
	init_waitqueue_head(&h->scan_wait_queue);
S
Stephen Cameron 已提交
8846
	init_waitqueue_head(&h->abort_cmd_wait_queue);
W
Webb Scales 已提交
8847 8848
	init_waitqueue_head(&h->event_sync_wait_queue);
	mutex_init(&h->reset_mutex);
8849
	h->scan_finished = 1; /* no scan currently in progress */
8850
	h->scan_waiting = 0;
8851 8852

	pci_set_drvdata(pdev, h);
8853
	h->ndevices = 0;
8854

8855
	spin_lock_init(&h->devlock);
R
Robert Elliott 已提交
8856 8857
	rc = hpsa_put_ctlr_into_performant_mode(h);
	if (rc)
8858 8859
		goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */

8860 8861 8862 8863 8864 8865 8866 8867 8868 8869 8870 8871
	/* create the resubmit workqueue */
	h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan");
	if (!h->rescan_ctlr_wq) {
		rc = -ENOMEM;
		goto clean7;
	}

	h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit");
	if (!h->resubmit_wq) {
		rc = -ENOMEM;
		goto clean7;	/* aer/h */
	}
8872

R
Robert Elliott 已提交
8873 8874
	/*
	 * At this point, the controller is ready to take commands.
8875 8876 8877 8878 8879 8880 8881 8882 8883 8884 8885 8886 8887 8888 8889
	 * Now, if reset_devices and the hard reset didn't work, try
	 * the soft reset and see if that works.
	 */
	if (try_soft_reset) {

		/* This is kind of gross.  We may or may not get a completion
		 * from the soft reset command, and if we do, then the value
		 * from the fifo may or may not be valid.  So, we wait 10 secs
		 * after the reset throwing away any completions we get during
		 * that time.  Unregister the interrupt handler and register
		 * fake ones to scoop up any residual completions.
		 */
		spin_lock_irqsave(&h->lock, flags);
		h->access.set_intr_mask(h, HPSA_INTR_OFF);
		spin_unlock_irqrestore(&h->lock, flags);
8890
		hpsa_free_irqs(h);
8891
		rc = hpsa_request_irqs(h, hpsa_msix_discard_completions,
8892 8893
					hpsa_intx_discard_completions);
		if (rc) {
8894 8895
			dev_warn(&h->pdev->dev,
				"Failed to request_irq after soft reset.\n");
8896
			/*
8897 8898 8899 8900 8901 8902 8903 8904 8905
			 * cannot goto clean7 or free_irqs will be called
			 * again. Instead, do its work
			 */
			hpsa_free_performant_mode(h);	/* clean7 */
			hpsa_free_sg_chain_blocks(h);	/* clean6 */
			hpsa_free_cmd_pool(h);		/* clean5 */
			/*
			 * skip hpsa_free_irqs(h) clean4 since that
			 * was just called before request_irqs failed
8906 8907
			 */
			goto clean3;
8908 8909 8910 8911 8912
		}

		rc = hpsa_kdump_soft_reset(h);
		if (rc)
			/* Neither hard nor soft reset worked, we're hosed. */
8913
			goto clean7;
8914 8915 8916 8917 8918 8919 8920 8921 8922 8923 8924 8925 8926 8927 8928 8929 8930 8931 8932 8933

		dev_info(&h->pdev->dev, "Board READY.\n");
		dev_info(&h->pdev->dev,
			"Waiting for stale completions to drain.\n");
		h->access.set_intr_mask(h, HPSA_INTR_ON);
		msleep(10000);
		h->access.set_intr_mask(h, HPSA_INTR_OFF);

		rc = controller_reset_failed(h->cfgtable);
		if (rc)
			dev_info(&h->pdev->dev,
				"Soft reset appears to have failed.\n");

		/* since the controller's reset, we have to go back and re-init
		 * everything.  Easiest to just forget what we've done and do it
		 * all over again.
		 */
		hpsa_undo_allocations_after_kdump_soft_reset(h);
		try_soft_reset = 0;
		if (rc)
8934
			/* don't goto clean, we already unallocated */
8935 8936 8937 8938
			return -ENODEV;

		goto reinit_after_soft_reset;
	}
8939

R
Robert Elliott 已提交
8940 8941
	/* Enable Accelerated IO path at driver layer */
	h->acciopath_status = 1;
8942 8943
	/* Disable discovery polling.*/
	h->discovery_polling = 0;
8944

8945

8946 8947 8948
	/* Turn the interrupts on so we can service requests */
	h->access.set_intr_mask(h, HPSA_INTR_ON);

8949
	hpsa_hba_inquiry(h);
8950

8951 8952 8953 8954 8955
	h->lastlogicals = kzalloc(sizeof(*(h->lastlogicals)), GFP_KERNEL);
	if (!h->lastlogicals)
		dev_info(&h->pdev->dev,
			"Can't track change to report lun data\n");

8956 8957 8958 8959 8960
	/* hook into SCSI subsystem */
	rc = hpsa_scsi_add_host(h);
	if (rc)
		goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */

8961 8962 8963 8964 8965
	/* Monitor the controller for firmware lockups */
	h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
	INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker);
	schedule_delayed_work(&h->monitor_ctlr_work,
				h->heartbeat_sample_interval);
8966 8967 8968
	INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker);
	queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
				h->heartbeat_sample_interval);
8969
	return 0;
8970

8971
clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
R
Robert Elliott 已提交
8972 8973 8974
	hpsa_free_performant_mode(h);
	h->access.set_intr_mask(h, HPSA_INTR_OFF);
clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */
8975
	hpsa_free_sg_chain_blocks(h);
8976
clean5: /* cmd, irq, shost, pci, lu, aer/h */
8977
	hpsa_free_cmd_pool(h);
8978
clean4: /* irq, shost, pci, lu, aer/h */
8979
	hpsa_free_irqs(h);
8980 8981 8982 8983
clean3: /* shost, pci, lu, aer/h */
	scsi_host_put(h->scsi_host);
	h->scsi_host = NULL;
clean2_5: /* pci, lu, aer/h */
R
Robert Elliott 已提交
8984
	hpsa_free_pci_init(h);
8985
clean2: /* lu, aer/h */
R
Robert Elliott 已提交
8986 8987 8988 8989 8990 8991
	if (h->lockup_detected) {
		free_percpu(h->lockup_detected);
		h->lockup_detected = NULL;
	}
clean1:	/* wq/aer/h */
	if (h->resubmit_wq) {
8992
		destroy_workqueue(h->resubmit_wq);
R
Robert Elliott 已提交
8993 8994 8995
		h->resubmit_wq = NULL;
	}
	if (h->rescan_ctlr_wq) {
8996
		destroy_workqueue(h->rescan_ctlr_wq);
R
Robert Elliott 已提交
8997 8998
		h->rescan_ctlr_wq = NULL;
	}
8999
	kfree(h);
9000
	return rc;
9001 9002 9003 9004 9005 9006
}

static void hpsa_flush_cache(struct ctlr_info *h)
{
	char *flush_buf;
	struct CommandList *c;
9007
	int rc;
9008

9009
	if (unlikely(lockup_detected(h)))
9010
		return;
9011 9012 9013 9014
	flush_buf = kzalloc(4, GFP_KERNEL);
	if (!flush_buf)
		return;

9015
	c = cmd_alloc(h);
9016

9017 9018 9019 9020
	if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
		RAID_CTLR_LUNID, TYPE_CMD)) {
		goto out;
	}
9021
	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
9022
					PCI_DMA_TODEVICE, DEFAULT_TIMEOUT);
9023 9024
	if (rc)
		goto out;
9025
	if (c->err_info->CommandStatus != 0)
9026
out:
9027 9028
		dev_warn(&h->pdev->dev,
			"error flushing cache on controller\n");
9029
	cmd_free(h, c);
9030 9031 9032
	kfree(flush_buf);
}

S
Scott Teel 已提交
9033 9034 9035 9036 9037 9038 9039 9040 9041 9042 9043 9044 9045 9046
/* Make controller gather fresh report lun data each time we
 * send down a report luns request
 */
static void hpsa_disable_rld_caching(struct ctlr_info *h)
{
	u32 *options;
	struct CommandList *c;
	int rc;

	/* Don't bother trying to set diag options if locked up */
	if (unlikely(h->lockup_detected))
		return;

	options = kzalloc(sizeof(*options), GFP_KERNEL);
9047
	if (!options)
S
Scott Teel 已提交
9048 9049 9050 9051 9052 9053 9054 9055 9056 9057
		return;

	c = cmd_alloc(h);

	/* first, get the current diag options settings */
	if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0,
		RAID_CTLR_LUNID, TYPE_CMD))
		goto errout;

	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
9058
		PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
S
Scott Teel 已提交
9059 9060 9061 9062 9063 9064 9065 9066 9067 9068 9069
	if ((rc != 0) || (c->err_info->CommandStatus != 0))
		goto errout;

	/* Now, set the bit for disabling the RLD caching */
	*options |= HPSA_DIAG_OPTS_DISABLE_RLD_CACHING;

	if (fill_cmd(c, BMIC_SET_DIAG_OPTIONS, h, options, 4, 0,
		RAID_CTLR_LUNID, TYPE_CMD))
		goto errout;

	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
9070
		PCI_DMA_TODEVICE, DEFAULT_TIMEOUT);
S
Scott Teel 已提交
9071 9072 9073 9074 9075 9076 9077 9078 9079
	if ((rc != 0)  || (c->err_info->CommandStatus != 0))
		goto errout;

	/* Now verify that it got set: */
	if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0,
		RAID_CTLR_LUNID, TYPE_CMD))
		goto errout;

	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
9080
		PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
S
Scott Teel 已提交
9081 9082 9083
	if ((rc != 0)  || (c->err_info->CommandStatus != 0))
		goto errout;

D
Dan Carpenter 已提交
9084
	if (*options & HPSA_DIAG_OPTS_DISABLE_RLD_CACHING)
S
Scott Teel 已提交
9085 9086 9087 9088 9089 9090 9091 9092 9093 9094
		goto out;

errout:
	dev_err(&h->pdev->dev,
			"Error: failed to disable report lun data caching.\n");
out:
	cmd_free(h, c);
	kfree(options);
}

9095 9096 9097 9098 9099 9100 9101 9102 9103 9104 9105
static void hpsa_shutdown(struct pci_dev *pdev)
{
	struct ctlr_info *h;

	h = pci_get_drvdata(pdev);
	/* Turn board interrupts off  and send the flush cache command
	 * sendcmd will turn off interrupt, and send the flush...
	 * To write all data in the battery backed cache to disks
	 */
	hpsa_flush_cache(h);
	h->access.set_intr_mask(h, HPSA_INTR_OFF);
R
Robert Elliott 已提交
9106
	hpsa_free_irqs(h);			/* init_one 4 */
9107
	hpsa_disable_interrupt_mode(h);		/* pci_init 2 */
9108 9109
}

9110
static void hpsa_free_device_info(struct ctlr_info *h)
9111 9112 9113
{
	int i;

R
Robert Elliott 已提交
9114
	for (i = 0; i < h->ndevices; i++) {
9115
		kfree(h->dev[i]);
R
Robert Elliott 已提交
9116 9117
		h->dev[i] = NULL;
	}
9118 9119
}

9120
static void hpsa_remove_one(struct pci_dev *pdev)
9121 9122
{
	struct ctlr_info *h;
9123
	unsigned long flags;
9124 9125

	if (pci_get_drvdata(pdev) == NULL) {
9126
		dev_err(&pdev->dev, "unable to remove device\n");
9127 9128 9129
		return;
	}
	h = pci_get_drvdata(pdev);
9130 9131 9132 9133 9134

	/* Get rid of any controller monitoring work items */
	spin_lock_irqsave(&h->lock, flags);
	h->remove_in_progress = 1;
	spin_unlock_irqrestore(&h->lock, flags);
9135 9136 9137 9138
	cancel_delayed_work_sync(&h->monitor_ctlr_work);
	cancel_delayed_work_sync(&h->rescan_ctlr_work);
	destroy_workqueue(h->rescan_ctlr_wq);
	destroy_workqueue(h->resubmit_wq);
9139

D
Don Brace 已提交
9140 9141 9142 9143 9144 9145 9146 9147
	/*
	 * Call before disabling interrupts.
	 * scsi_remove_host can trigger I/O operations especially
	 * when multipath is enabled. There can be SYNCHRONIZE CACHE
	 * operations which cannot complete and will hang the system.
	 */
	if (h->scsi_host)
		scsi_remove_host(h->scsi_host);		/* init_one 8 */
R
Robert Elliott 已提交
9148
	/* includes hpsa_free_irqs - init_one 4 */
R
Robert Elliott 已提交
9149
	/* includes hpsa_disable_interrupt_mode - pci_init 2 */
9150
	hpsa_shutdown(pdev);
9151

R
Robert Elliott 已提交
9152 9153
	hpsa_free_device_info(h);		/* scan */

9154 9155 9156
	kfree(h->hba_inquiry_data);			/* init_one 10 */
	h->hba_inquiry_data = NULL;			/* init_one 10 */
	hpsa_free_ioaccel2_sg_chain_blocks(h);
R
Robert Elliott 已提交
9157 9158 9159
	hpsa_free_performant_mode(h);			/* init_one 7 */
	hpsa_free_sg_chain_blocks(h);			/* init_one 6 */
	hpsa_free_cmd_pool(h);				/* init_one 5 */
9160
	kfree(h->lastlogicals);
R
Robert Elliott 已提交
9161 9162

	/* hpsa_free_irqs already called via hpsa_shutdown init_one 4 */
R
Robert Elliott 已提交
9163

9164 9165 9166
	scsi_host_put(h->scsi_host);			/* init_one 3 */
	h->scsi_host = NULL;				/* init_one 3 */

R
Robert Elliott 已提交
9167
	/* includes hpsa_disable_interrupt_mode - pci_init 2 */
9168
	hpsa_free_pci_init(h);				/* init_one 2.5 */
R
Robert Elliott 已提交
9169

R
Robert Elliott 已提交
9170 9171 9172
	free_percpu(h->lockup_detected);		/* init_one 2 */
	h->lockup_detected = NULL;			/* init_one 2 */
	/* (void) pci_disable_pcie_error_reporting(pdev); */	/* init_one 1 */
K
Kevin Barnett 已提交
9173 9174 9175

	hpsa_delete_sas_host(h);

R
Robert Elliott 已提交
9176
	kfree(h);					/* init_one 1 */
9177 9178 9179 9180 9181 9182 9183 9184 9185 9186 9187 9188 9189 9190
}

static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
	__attribute__((unused)) pm_message_t state)
{
	return -ENOSYS;
}

static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
{
	return -ENOSYS;
}

static struct pci_driver hpsa_pci_driver = {
9191
	.name = HPSA,
9192
	.probe = hpsa_init_one,
9193
	.remove = hpsa_remove_one,
9194 9195 9196 9197 9198 9199
	.id_table = hpsa_pci_device_id,	/* id_table */
	.shutdown = hpsa_shutdown,
	.suspend = hpsa_suspend,
	.resume = hpsa_resume,
};

9200 9201 9202 9203 9204 9205 9206 9207 9208 9209 9210 9211 9212
/* Fill in bucket_map[], given nsgs (the max number of
 * scatter gather elements supported) and bucket[],
 * which is an array of 8 integers.  The bucket[] array
 * contains 8 different DMA transfer sizes (in 16
 * byte increments) which the controller uses to fetch
 * commands.  This function fills in bucket_map[], which
 * maps a given number of scatter gather elements to one of
 * the 8 DMA transfer sizes.  The point of it is to allow the
 * controller to only do as much DMA as needed to fetch the
 * command, with the DMA transfer size encoded in the lower
 * bits of the command address.
 */
static void  calc_bucket_map(int bucket[], int num_buckets,
D
Don Brace 已提交
9213
	int nsgs, int min_blocks, u32 *bucket_map)
9214 9215 9216 9217 9218 9219
{
	int i, j, b, size;

	/* Note, bucket_map must have nsgs+1 entries. */
	for (i = 0; i <= nsgs; i++) {
		/* Compute size of a command with i SG entries */
9220
		size = i + min_blocks;
9221 9222
		b = num_buckets; /* Assume the biggest bucket */
		/* Find the bucket that is just big enough */
9223
		for (j = 0; j < num_buckets; j++) {
9224 9225 9226 9227 9228 9229 9230 9231 9232 9233
			if (bucket[j] >= size) {
				b = j;
				break;
			}
		}
		/* for a command with i SG entries, use bucket b. */
		bucket_map[i] = b;
	}
}

R
Robert Elliott 已提交
9234 9235 9236 9237
/*
 * return -ENODEV on err, 0 on success (or no action)
 * allocates numerous items that must be freed later
 */
9238
static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
9239
{
9240 9241
	int i;
	unsigned long register_value;
9242 9243
	unsigned long transMethod = CFGTBL_Trans_Performant |
			(trans_support & CFGTBL_Trans_use_short_tags) |
9244 9245 9246
				CFGTBL_Trans_enable_directed_msix |
			(trans_support & (CFGTBL_Trans_io_accel1 |
				CFGTBL_Trans_io_accel2));
9247
	struct access_method access = SA5_performant_access;
9248 9249 9250 9251 9252 9253 9254 9255 9256 9257 9258

	/* This is a bit complicated.  There are 8 registers on
	 * the controller which we write to to tell it 8 different
	 * sizes of commands which there may be.  It's a way of
	 * reducing the DMA done to fetch each command.  Encoded into
	 * each command's tag are 3 bits which communicate to the controller
	 * which of the eight sizes that command fits within.  The size of
	 * each command depends on how many scatter gather entries there are.
	 * Each SG entry requires 16 bytes.  The eight registers are programmed
	 * with the number of 16-byte blocks a command of that size requires.
	 * The smallest command possible requires 5 such 16 byte blocks.
9259
	 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte
9260 9261 9262 9263 9264 9265
	 * blocks.  Note, this only extends to the SG entries contained
	 * within the command block, and does not extend to chained blocks
	 * of SG elements.   bft[] contains the eight values we write to
	 * the registers.  They are not evenly distributed, but have more
	 * sizes for small commands, and fewer sizes for larger commands.
	 */
9266
	int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4};
9267 9268 9269 9270 9271 9272 9273 9274 9275 9276
#define MIN_IOACCEL2_BFT_ENTRY 5
#define HPSA_IOACCEL2_HEADER_SZ 4
	int bft2[16] = {MIN_IOACCEL2_BFT_ENTRY, 6, 7, 8, 9, 10, 11, 12,
			13, 14, 15, 16, 17, 18, 19,
			HPSA_IOACCEL2_HEADER_SZ + IOACCEL2_MAXSGENTRIES};
	BUILD_BUG_ON(ARRAY_SIZE(bft2) != 16);
	BUILD_BUG_ON(ARRAY_SIZE(bft) != 8);
	BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) >
				 16 * MIN_IOACCEL2_BFT_ENTRY);
	BUILD_BUG_ON(sizeof(struct ioaccel2_sg_element) != 16);
9277
	BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4);
9278 9279 9280 9281 9282 9283
	/*  5 = 1 s/g entry or 4k
	 *  6 = 2 s/g entry or 8k
	 *  8 = 4 s/g entry or 16k
	 * 10 = 6 s/g entry or 24k
	 */

9284 9285 9286 9287 9288 9289 9290
	/* If the controller supports either ioaccel method then
	 * we can also use the RAID stack submit path that does not
	 * perform the superfluous readl() after each command submission.
	 */
	if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2))
		access = SA5_performant_access_no_read;

9291
	/* Controller spec: zero out this buffer. */
9292 9293
	for (i = 0; i < h->nreply_queues; i++)
		memset(h->reply_queue[i].head, 0, h->reply_queue_size);
9294

9295 9296
	bft[7] = SG_ENTRIES_IN_CMD + 4;
	calc_bucket_map(bft, ARRAY_SIZE(bft),
9297
				SG_ENTRIES_IN_CMD, 4, h->blockFetchTable);
9298 9299 9300 9301 9302
	for (i = 0; i < 8; i++)
		writel(bft[i], &h->transtable->BlockFetch[i]);

	/* size of controller ring buffer */
	writel(h->max_commands, &h->transtable->RepQSize);
9303
	writel(h->nreply_queues, &h->transtable->RepQCount);
9304 9305
	writel(0, &h->transtable->RepQCtrAddrLow32);
	writel(0, &h->transtable->RepQCtrAddrHigh32);
9306 9307 9308

	for (i = 0; i < h->nreply_queues; i++) {
		writel(0, &h->transtable->RepQAddr[i].upper);
9309
		writel(h->reply_queue[i].busaddr,
9310 9311 9312
			&h->transtable->RepQAddr[i].lower);
	}

9313
	writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
9314 9315 9316 9317 9318 9319 9320 9321
	writel(transMethod, &(h->cfgtable->HostWrite.TransportRequest));
	/*
	 * enable outbound interrupt coalescing in accelerator mode;
	 */
	if (trans_support & CFGTBL_Trans_io_accel1) {
		access = SA5_ioaccel_mode1_access;
		writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
		writel(4, &h->cfgtable->HostWrite.CoalIntCount);
9322 9323
	} else
		if (trans_support & CFGTBL_Trans_io_accel2)
9324
			access = SA5_ioaccel_mode2_access;
9325
	writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
9326 9327 9328 9329 9330
	if (hpsa_wait_for_mode_change_ack(h)) {
		dev_err(&h->pdev->dev,
			"performant mode problem - doorbell timeout\n");
		return -ENODEV;
	}
9331 9332
	register_value = readl(&(h->cfgtable->TransportActive));
	if (!(register_value & CFGTBL_Trans_Performant)) {
9333 9334
		dev_err(&h->pdev->dev,
			"performant mode problem - transport not active\n");
9335
		return -ENODEV;
9336
	}
9337
	/* Change the access methods to the performant access methods */
9338 9339 9340
	h->access = access;
	h->transMethod = transMethod;

9341 9342
	if (!((trans_support & CFGTBL_Trans_io_accel1) ||
		(trans_support & CFGTBL_Trans_io_accel2)))
9343
		return 0;
9344

9345 9346 9347 9348 9349 9350 9351 9352 9353 9354
	if (trans_support & CFGTBL_Trans_io_accel1) {
		/* Set up I/O accelerator mode */
		for (i = 0; i < h->nreply_queues; i++) {
			writel(i, h->vaddr + IOACCEL_MODE1_REPLY_QUEUE_INDEX);
			h->reply_queue[i].current_entry =
				readl(h->vaddr + IOACCEL_MODE1_PRODUCER_INDEX);
		}
		bft[7] = h->ioaccel_maxsg + 8;
		calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8,
				h->ioaccel1_blockFetchTable);
9355

9356
		/* initialize all reply queue entries to unused */
9357 9358 9359 9360
		for (i = 0; i < h->nreply_queues; i++)
			memset(h->reply_queue[i].head,
				(u8) IOACCEL_MODE1_REPLY_UNUSED,
				h->reply_queue_size);
9361

9362 9363 9364 9365 9366 9367 9368 9369 9370 9371 9372
		/* set all the constant fields in the accelerator command
		 * frames once at init time to save CPU cycles later.
		 */
		for (i = 0; i < h->nr_cmds; i++) {
			struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[i];

			cp->function = IOACCEL1_FUNCTION_SCSIIO;
			cp->err_info = (u32) (h->errinfo_pool_dhandle +
					(i * sizeof(struct ErrorInfo)));
			cp->err_info_len = sizeof(struct ErrorInfo);
			cp->sgl_offset = IOACCEL1_SGLOFFSET;
D
Don Brace 已提交
9373 9374
			cp->host_context_flags =
				cpu_to_le16(IOACCEL1_HCFLAGS_CISS_FORMAT);
9375 9376
			cp->timeout_sec = 0;
			cp->ReplyQueue = 0;
9377
			cp->tag =
9378
				cpu_to_le64((i << DIRECT_LOOKUP_SHIFT));
9379 9380
			cp->host_addr =
				cpu_to_le64(h->ioaccel_cmd_pool_dhandle +
9381 9382 9383 9384 9385 9386 9387 9388 9389 9390 9391 9392 9393 9394 9395 9396 9397 9398 9399 9400 9401 9402 9403 9404
					(i * sizeof(struct io_accel1_cmd)));
		}
	} else if (trans_support & CFGTBL_Trans_io_accel2) {
		u64 cfg_offset, cfg_base_addr_index;
		u32 bft2_offset, cfg_base_addr;
		int rc;

		rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
			&cfg_base_addr_index, &cfg_offset);
		BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) != 64);
		bft2[15] = h->ioaccel_maxsg + HPSA_IOACCEL2_HEADER_SZ;
		calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg,
				4, h->ioaccel2_blockFetchTable);
		bft2_offset = readl(&h->cfgtable->io_accel_request_size_offset);
		BUILD_BUG_ON(offsetof(struct CfgTable,
				io_accel_request_size_offset) != 0xb8);
		h->ioaccel2_bft2_regs =
			remap_pci_mem(pci_resource_start(h->pdev,
					cfg_base_addr_index) +
					cfg_offset + bft2_offset,
					ARRAY_SIZE(bft2) *
					sizeof(*h->ioaccel2_bft2_regs));
		for (i = 0; i < ARRAY_SIZE(bft2); i++)
			writel(bft2[i], &h->ioaccel2_bft2_regs[i]);
9405
	}
9406
	writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
9407 9408 9409 9410 9411 9412
	if (hpsa_wait_for_mode_change_ack(h)) {
		dev_err(&h->pdev->dev,
			"performant mode problem - enabling ioaccel mode\n");
		return -ENODEV;
	}
	return 0;
9413 9414
}

9415 9416 9417
/* Free ioaccel1 mode command blocks and block fetch table */
static void hpsa_free_ioaccel1_cmd_and_bft(struct ctlr_info *h)
{
R
Robert Elliott 已提交
9418
	if (h->ioaccel_cmd_pool) {
9419 9420 9421 9422
		pci_free_consistent(h->pdev,
			h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
			h->ioaccel_cmd_pool,
			h->ioaccel_cmd_pool_dhandle);
R
Robert Elliott 已提交
9423 9424 9425
		h->ioaccel_cmd_pool = NULL;
		h->ioaccel_cmd_pool_dhandle = 0;
	}
9426
	kfree(h->ioaccel1_blockFetchTable);
R
Robert Elliott 已提交
9427
	h->ioaccel1_blockFetchTable = NULL;
9428 9429
}

9430 9431
/* Allocate ioaccel1 mode command blocks and block fetch table */
static int hpsa_alloc_ioaccel1_cmd_and_bft(struct ctlr_info *h)
9432
{
9433 9434 9435 9436 9437
	h->ioaccel_maxsg =
		readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
	if (h->ioaccel_maxsg > IOACCEL1_MAXSGENTRIES)
		h->ioaccel_maxsg = IOACCEL1_MAXSGENTRIES;

9438 9439 9440 9441 9442 9443 9444 9445 9446 9447 9448 9449
	/* Command structures must be aligned on a 128-byte boundary
	 * because the 7 lower bits of the address are used by the
	 * hardware.
	 */
	BUILD_BUG_ON(sizeof(struct io_accel1_cmd) %
			IOACCEL1_COMMANDLIST_ALIGNMENT);
	h->ioaccel_cmd_pool =
		pci_alloc_consistent(h->pdev,
			h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
			&(h->ioaccel_cmd_pool_dhandle));

	h->ioaccel1_blockFetchTable =
9450
		kmalloc(((h->ioaccel_maxsg + 1) *
9451 9452 9453 9454 9455 9456 9457 9458 9459 9460 9461
				sizeof(u32)), GFP_KERNEL);

	if ((h->ioaccel_cmd_pool == NULL) ||
		(h->ioaccel1_blockFetchTable == NULL))
		goto clean_up;

	memset(h->ioaccel_cmd_pool, 0,
		h->nr_cmds * sizeof(*h->ioaccel_cmd_pool));
	return 0;

clean_up:
9462
	hpsa_free_ioaccel1_cmd_and_bft(h);
9463
	return -ENOMEM;
9464 9465
}

9466 9467 9468
/* Free ioaccel2 mode command blocks and block fetch table */
static void hpsa_free_ioaccel2_cmd_and_bft(struct ctlr_info *h)
{
9469 9470
	hpsa_free_ioaccel2_sg_chain_blocks(h);

R
Robert Elliott 已提交
9471
	if (h->ioaccel2_cmd_pool) {
9472 9473 9474 9475
		pci_free_consistent(h->pdev,
			h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
			h->ioaccel2_cmd_pool,
			h->ioaccel2_cmd_pool_dhandle);
R
Robert Elliott 已提交
9476 9477 9478
		h->ioaccel2_cmd_pool = NULL;
		h->ioaccel2_cmd_pool_dhandle = 0;
	}
9479
	kfree(h->ioaccel2_blockFetchTable);
R
Robert Elliott 已提交
9480
	h->ioaccel2_blockFetchTable = NULL;
9481 9482
}

9483 9484
/* Allocate ioaccel2 mode command blocks and block fetch table */
static int hpsa_alloc_ioaccel2_cmd_and_bft(struct ctlr_info *h)
9485
{
9486 9487
	int rc;

9488 9489 9490 9491 9492 9493 9494 9495 9496 9497 9498 9499 9500 9501 9502 9503 9504 9505 9506
	/* Allocate ioaccel2 mode command blocks and block fetch table */

	h->ioaccel_maxsg =
		readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
	if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES)
		h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES;

	BUILD_BUG_ON(sizeof(struct io_accel2_cmd) %
			IOACCEL2_COMMANDLIST_ALIGNMENT);
	h->ioaccel2_cmd_pool =
		pci_alloc_consistent(h->pdev,
			h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
			&(h->ioaccel2_cmd_pool_dhandle));

	h->ioaccel2_blockFetchTable =
		kmalloc(((h->ioaccel_maxsg + 1) *
				sizeof(u32)), GFP_KERNEL);

	if ((h->ioaccel2_cmd_pool == NULL) ||
9507 9508 9509 9510 9511 9512 9513
		(h->ioaccel2_blockFetchTable == NULL)) {
		rc = -ENOMEM;
		goto clean_up;
	}

	rc = hpsa_allocate_ioaccel2_sg_chain_blocks(h);
	if (rc)
9514 9515 9516 9517 9518 9519 9520
		goto clean_up;

	memset(h->ioaccel2_cmd_pool, 0,
		h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool));
	return 0;

clean_up:
9521
	hpsa_free_ioaccel2_cmd_and_bft(h);
9522
	return rc;
9523 9524
}

R
Robert Elliott 已提交
9525 9526 9527 9528 9529 9530 9531 9532 9533 9534 9535 9536 9537 9538
/* Free items allocated by hpsa_put_ctlr_into_performant_mode */
static void hpsa_free_performant_mode(struct ctlr_info *h)
{
	kfree(h->blockFetchTable);
	h->blockFetchTable = NULL;
	hpsa_free_reply_queues(h);
	hpsa_free_ioaccel1_cmd_and_bft(h);
	hpsa_free_ioaccel2_cmd_and_bft(h);
}

/* return -ENODEV on error, 0 on success (or no action)
 * allocates numerous items that must be freed later
 */
static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
9539 9540
{
	u32 trans_support;
9541 9542
	unsigned long transMethod = CFGTBL_Trans_Performant |
					CFGTBL_Trans_use_short_tags;
R
Robert Elliott 已提交
9543
	int i, rc;
9544

9545
	if (hpsa_simple_mode)
R
Robert Elliott 已提交
9546
		return 0;
9547

9548 9549
	trans_support = readl(&(h->cfgtable->TransportSupport));
	if (!(trans_support & PERFORMANT_MODE))
R
Robert Elliott 已提交
9550
		return 0;
9551

9552 9553 9554 9555
	/* Check for I/O accelerator mode support */
	if (trans_support & CFGTBL_Trans_io_accel1) {
		transMethod |= CFGTBL_Trans_io_accel1 |
				CFGTBL_Trans_enable_directed_msix;
R
Robert Elliott 已提交
9556 9557 9558 9559 9560
		rc = hpsa_alloc_ioaccel1_cmd_and_bft(h);
		if (rc)
			return rc;
	} else if (trans_support & CFGTBL_Trans_io_accel2) {
		transMethod |= CFGTBL_Trans_io_accel2 |
9561
				CFGTBL_Trans_enable_directed_msix;
R
Robert Elliott 已提交
9562 9563 9564
		rc = hpsa_alloc_ioaccel2_cmd_and_bft(h);
		if (rc)
			return rc;
9565 9566
	}

9567
	h->nreply_queues = h->msix_vectors > 0 ? h->msix_vectors : 1;
9568
	hpsa_get_max_perf_mode_cmds(h);
9569
	/* Performant mode ring buffer and supporting data structures */
9570
	h->reply_queue_size = h->max_commands * sizeof(u64);
9571

9572
	for (i = 0; i < h->nreply_queues; i++) {
9573 9574 9575
		h->reply_queue[i].head = pci_alloc_consistent(h->pdev,
						h->reply_queue_size,
						&(h->reply_queue[i].busaddr));
R
Robert Elliott 已提交
9576 9577 9578 9579
		if (!h->reply_queue[i].head) {
			rc = -ENOMEM;
			goto clean1;	/* rq, ioaccel */
		}
9580 9581 9582 9583 9584
		h->reply_queue[i].size = h->max_commands;
		h->reply_queue[i].wraparound = 1;  /* spec: init to 1 */
		h->reply_queue[i].current_entry = 0;
	}

9585
	/* Need a block fetch table for performant mode */
9586
	h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) *
9587
				sizeof(u32)), GFP_KERNEL);
R
Robert Elliott 已提交
9588 9589 9590 9591
	if (!h->blockFetchTable) {
		rc = -ENOMEM;
		goto clean1;	/* rq, ioaccel */
	}
9592

R
Robert Elliott 已提交
9593 9594 9595 9596
	rc = hpsa_enter_performant_mode(h, trans_support);
	if (rc)
		goto clean2;	/* bft, rq, ioaccel */
	return 0;
9597

R
Robert Elliott 已提交
9598
clean2:	/* bft, rq, ioaccel */
9599
	kfree(h->blockFetchTable);
R
Robert Elliott 已提交
9600 9601 9602 9603 9604 9605
	h->blockFetchTable = NULL;
clean1:	/* rq, ioaccel */
	hpsa_free_reply_queues(h);
	hpsa_free_ioaccel1_cmd_and_bft(h);
	hpsa_free_ioaccel2_cmd_and_bft(h);
	return rc;
9606 9607
}

9608
static int is_accelerated_cmd(struct CommandList *c)
9609
{
9610 9611 9612 9613 9614 9615
	return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2;
}

static void hpsa_drain_accel_commands(struct ctlr_info *h)
{
	struct CommandList *c = NULL;
9616
	int i, accel_cmds_out;
9617
	int refcount;
9618

9619
	do { /* wait for all outstanding ioaccel commands to drain out */
9620
		accel_cmds_out = 0;
9621 9622
		for (i = 0; i < h->nr_cmds; i++) {
			c = h->cmd_pool + i;
9623 9624 9625 9626
			refcount = atomic_inc_return(&c->refcount);
			if (refcount > 1) /* Command is allocated */
				accel_cmds_out += is_accelerated_cmd(c);
			cmd_free(h, c);
9627
		}
9628
		if (accel_cmds_out <= 0)
9629
			break;
9630 9631 9632 9633
		msleep(100);
	} while (1);
}

K
Kevin Barnett 已提交
9634 9635 9636 9637 9638 9639 9640 9641 9642 9643 9644 9645 9646 9647 9648 9649 9650 9651 9652 9653 9654 9655 9656 9657 9658 9659 9660 9661 9662 9663 9664 9665 9666 9667 9668 9669 9670 9671 9672 9673 9674 9675 9676 9677 9678 9679 9680 9681 9682 9683 9684 9685 9686 9687 9688 9689 9690 9691 9692 9693 9694 9695 9696 9697 9698 9699 9700 9701 9702 9703 9704 9705 9706 9707 9708 9709 9710 9711 9712 9713 9714 9715 9716 9717 9718 9719 9720 9721 9722 9723 9724 9725 9726 9727 9728 9729 9730 9731 9732 9733 9734 9735 9736 9737 9738 9739 9740 9741 9742 9743 9744 9745 9746 9747 9748 9749 9750 9751 9752 9753 9754 9755 9756 9757 9758 9759 9760 9761 9762 9763 9764 9765 9766 9767 9768 9769 9770 9771 9772 9773 9774 9775 9776 9777 9778 9779 9780 9781 9782 9783 9784 9785 9786 9787 9788 9789 9790 9791 9792 9793 9794 9795 9796 9797 9798 9799 9800 9801 9802 9803 9804 9805 9806 9807 9808 9809 9810 9811 9812 9813 9814 9815 9816 9817 9818 9819 9820 9821 9822 9823 9824 9825 9826 9827 9828 9829 9830 9831 9832 9833 9834 9835 9836 9837 9838 9839 9840 9841 9842 9843 9844 9845 9846 9847 9848 9849 9850 9851 9852 9853 9854 9855 9856 9857 9858 9859 9860 9861 9862 9863 9864 9865 9866 9867 9868 9869 9870 9871 9872 9873 9874 9875 9876 9877 9878 9879 9880 9881 9882 9883 9884 9885 9886 9887 9888 9889 9890 9891 9892 9893 9894 9895 9896 9897 9898 9899 9900 9901 9902 9903 9904 9905 9906 9907 9908 9909 9910 9911 9912 9913
static struct hpsa_sas_phy *hpsa_alloc_sas_phy(
				struct hpsa_sas_port *hpsa_sas_port)
{
	struct hpsa_sas_phy *hpsa_sas_phy;
	struct sas_phy *phy;

	hpsa_sas_phy = kzalloc(sizeof(*hpsa_sas_phy), GFP_KERNEL);
	if (!hpsa_sas_phy)
		return NULL;

	phy = sas_phy_alloc(hpsa_sas_port->parent_node->parent_dev,
		hpsa_sas_port->next_phy_index);
	if (!phy) {
		kfree(hpsa_sas_phy);
		return NULL;
	}

	hpsa_sas_port->next_phy_index++;
	hpsa_sas_phy->phy = phy;
	hpsa_sas_phy->parent_port = hpsa_sas_port;

	return hpsa_sas_phy;
}

static void hpsa_free_sas_phy(struct hpsa_sas_phy *hpsa_sas_phy)
{
	struct sas_phy *phy = hpsa_sas_phy->phy;

	sas_port_delete_phy(hpsa_sas_phy->parent_port->port, phy);
	sas_phy_free(phy);
	if (hpsa_sas_phy->added_to_port)
		list_del(&hpsa_sas_phy->phy_list_entry);
	kfree(hpsa_sas_phy);
}

static int hpsa_sas_port_add_phy(struct hpsa_sas_phy *hpsa_sas_phy)
{
	int rc;
	struct hpsa_sas_port *hpsa_sas_port;
	struct sas_phy *phy;
	struct sas_identify *identify;

	hpsa_sas_port = hpsa_sas_phy->parent_port;
	phy = hpsa_sas_phy->phy;

	identify = &phy->identify;
	memset(identify, 0, sizeof(*identify));
	identify->sas_address = hpsa_sas_port->sas_address;
	identify->device_type = SAS_END_DEVICE;
	identify->initiator_port_protocols = SAS_PROTOCOL_STP;
	identify->target_port_protocols = SAS_PROTOCOL_STP;
	phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
	phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
	phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN;
	phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN;
	phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;

	rc = sas_phy_add(hpsa_sas_phy->phy);
	if (rc)
		return rc;

	sas_port_add_phy(hpsa_sas_port->port, hpsa_sas_phy->phy);
	list_add_tail(&hpsa_sas_phy->phy_list_entry,
			&hpsa_sas_port->phy_list_head);
	hpsa_sas_phy->added_to_port = true;

	return 0;
}

static int
	hpsa_sas_port_add_rphy(struct hpsa_sas_port *hpsa_sas_port,
				struct sas_rphy *rphy)
{
	struct sas_identify *identify;

	identify = &rphy->identify;
	identify->sas_address = hpsa_sas_port->sas_address;
	identify->initiator_port_protocols = SAS_PROTOCOL_STP;
	identify->target_port_protocols = SAS_PROTOCOL_STP;

	return sas_rphy_add(rphy);
}

static struct hpsa_sas_port
	*hpsa_alloc_sas_port(struct hpsa_sas_node *hpsa_sas_node,
				u64 sas_address)
{
	int rc;
	struct hpsa_sas_port *hpsa_sas_port;
	struct sas_port *port;

	hpsa_sas_port = kzalloc(sizeof(*hpsa_sas_port), GFP_KERNEL);
	if (!hpsa_sas_port)
		return NULL;

	INIT_LIST_HEAD(&hpsa_sas_port->phy_list_head);
	hpsa_sas_port->parent_node = hpsa_sas_node;

	port = sas_port_alloc_num(hpsa_sas_node->parent_dev);
	if (!port)
		goto free_hpsa_port;

	rc = sas_port_add(port);
	if (rc)
		goto free_sas_port;

	hpsa_sas_port->port = port;
	hpsa_sas_port->sas_address = sas_address;
	list_add_tail(&hpsa_sas_port->port_list_entry,
			&hpsa_sas_node->port_list_head);

	return hpsa_sas_port;

free_sas_port:
	sas_port_free(port);
free_hpsa_port:
	kfree(hpsa_sas_port);

	return NULL;
}

static void hpsa_free_sas_port(struct hpsa_sas_port *hpsa_sas_port)
{
	struct hpsa_sas_phy *hpsa_sas_phy;
	struct hpsa_sas_phy *next;

	list_for_each_entry_safe(hpsa_sas_phy, next,
			&hpsa_sas_port->phy_list_head, phy_list_entry)
		hpsa_free_sas_phy(hpsa_sas_phy);

	sas_port_delete(hpsa_sas_port->port);
	list_del(&hpsa_sas_port->port_list_entry);
	kfree(hpsa_sas_port);
}

static struct hpsa_sas_node *hpsa_alloc_sas_node(struct device *parent_dev)
{
	struct hpsa_sas_node *hpsa_sas_node;

	hpsa_sas_node = kzalloc(sizeof(*hpsa_sas_node), GFP_KERNEL);
	if (hpsa_sas_node) {
		hpsa_sas_node->parent_dev = parent_dev;
		INIT_LIST_HEAD(&hpsa_sas_node->port_list_head);
	}

	return hpsa_sas_node;
}

static void hpsa_free_sas_node(struct hpsa_sas_node *hpsa_sas_node)
{
	struct hpsa_sas_port *hpsa_sas_port;
	struct hpsa_sas_port *next;

	if (!hpsa_sas_node)
		return;

	list_for_each_entry_safe(hpsa_sas_port, next,
			&hpsa_sas_node->port_list_head, port_list_entry)
		hpsa_free_sas_port(hpsa_sas_port);

	kfree(hpsa_sas_node);
}

static struct hpsa_scsi_dev_t
	*hpsa_find_device_by_sas_rphy(struct ctlr_info *h,
					struct sas_rphy *rphy)
{
	int i;
	struct hpsa_scsi_dev_t *device;

	for (i = 0; i < h->ndevices; i++) {
		device = h->dev[i];
		if (!device->sas_port)
			continue;
		if (device->sas_port->rphy == rphy)
			return device;
	}

	return NULL;
}

static int hpsa_add_sas_host(struct ctlr_info *h)
{
	int rc;
	struct device *parent_dev;
	struct hpsa_sas_node *hpsa_sas_node;
	struct hpsa_sas_port *hpsa_sas_port;
	struct hpsa_sas_phy *hpsa_sas_phy;

	parent_dev = &h->scsi_host->shost_gendev;

	hpsa_sas_node = hpsa_alloc_sas_node(parent_dev);
	if (!hpsa_sas_node)
		return -ENOMEM;

	hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, h->sas_address);
	if (!hpsa_sas_port) {
		rc = -ENODEV;
		goto free_sas_node;
	}

	hpsa_sas_phy = hpsa_alloc_sas_phy(hpsa_sas_port);
	if (!hpsa_sas_phy) {
		rc = -ENODEV;
		goto free_sas_port;
	}

	rc = hpsa_sas_port_add_phy(hpsa_sas_phy);
	if (rc)
		goto free_sas_phy;

	h->sas_host = hpsa_sas_node;

	return 0;

free_sas_phy:
	hpsa_free_sas_phy(hpsa_sas_phy);
free_sas_port:
	hpsa_free_sas_port(hpsa_sas_port);
free_sas_node:
	hpsa_free_sas_node(hpsa_sas_node);

	return rc;
}

static void hpsa_delete_sas_host(struct ctlr_info *h)
{
	hpsa_free_sas_node(h->sas_host);
}

static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node,
				struct hpsa_scsi_dev_t *device)
{
	int rc;
	struct hpsa_sas_port *hpsa_sas_port;
	struct sas_rphy *rphy;

	hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, device->sas_address);
	if (!hpsa_sas_port)
		return -ENOMEM;

	rphy = sas_end_device_alloc(hpsa_sas_port->port);
	if (!rphy) {
		rc = -ENODEV;
		goto free_sas_port;
	}

	hpsa_sas_port->rphy = rphy;
	device->sas_port = hpsa_sas_port;

	rc = hpsa_sas_port_add_rphy(hpsa_sas_port, rphy);
	if (rc)
		goto free_sas_port;

	return 0;

free_sas_port:
	hpsa_free_sas_port(hpsa_sas_port);
	device->sas_port = NULL;

	return rc;
}

static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device)
{
	if (device->sas_port) {
		hpsa_free_sas_port(device->sas_port);
		device->sas_port = NULL;
	}
}

static int
hpsa_sas_get_linkerrors(struct sas_phy *phy)
{
	return 0;
}

static int
hpsa_sas_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
{
9914
	*identifier = 0;
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Kevin Barnett 已提交
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	return 0;
}

static int
hpsa_sas_get_bay_identifier(struct sas_rphy *rphy)
{
	return -ENXIO;
}

static int
hpsa_sas_phy_reset(struct sas_phy *phy, int hard_reset)
{
	return 0;
}

static int
hpsa_sas_phy_enable(struct sas_phy *phy, int enable)
{
	return 0;
}

static int
hpsa_sas_phy_setup(struct sas_phy *phy)
{
	return 0;
}

static void
hpsa_sas_phy_release(struct sas_phy *phy)
{
}

static int
hpsa_sas_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
{
	return -EINVAL;
}

/* SMP = Serial Management Protocol */
static int
hpsa_sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
struct request *req)
{
	return -EINVAL;
}

static struct sas_function_template hpsa_sas_transport_functions = {
	.get_linkerrors = hpsa_sas_get_linkerrors,
	.get_enclosure_identifier = hpsa_sas_get_enclosure_identifier,
	.get_bay_identifier = hpsa_sas_get_bay_identifier,
	.phy_reset = hpsa_sas_phy_reset,
	.phy_enable = hpsa_sas_phy_enable,
	.phy_setup = hpsa_sas_phy_setup,
	.phy_release = hpsa_sas_phy_release,
	.set_phy_speed = hpsa_sas_phy_speed,
	.smp_handler = hpsa_sas_smp_handler,
};

9973 9974 9975 9976 9977 9978
/*
 *  This is it.  Register the PCI driver information for the cards we control
 *  the OS will call our registered routines when it finds one of our cards.
 */
static int __init hpsa_init(void)
{
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Kevin Barnett 已提交
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	int rc;

	hpsa_sas_transport_template =
		sas_attach_transport(&hpsa_sas_transport_functions);
	if (!hpsa_sas_transport_template)
		return -ENODEV;

	rc = pci_register_driver(&hpsa_pci_driver);

	if (rc)
		sas_release_transport(hpsa_sas_transport_template);

	return rc;
9992 9993 9994 9995 9996
}

static void __exit hpsa_cleanup(void)
{
	pci_unregister_driver(&hpsa_pci_driver);
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Kevin Barnett 已提交
9997
	sas_release_transport(hpsa_sas_transport_template);
9998 9999
}

10000 10001
static void __attribute__((unused)) verify_offsets(void)
{
10002 10003 10004 10005 10006 10007 10008 10009 10010 10011 10012 10013 10014 10015 10016 10017 10018 10019 10020 10021 10022 10023
#define VERIFY_OFFSET(member, offset) \
	BUILD_BUG_ON(offsetof(struct raid_map_data, member) != offset)

	VERIFY_OFFSET(structure_size, 0);
	VERIFY_OFFSET(volume_blk_size, 4);
	VERIFY_OFFSET(volume_blk_cnt, 8);
	VERIFY_OFFSET(phys_blk_shift, 16);
	VERIFY_OFFSET(parity_rotation_shift, 17);
	VERIFY_OFFSET(strip_size, 18);
	VERIFY_OFFSET(disk_starting_blk, 20);
	VERIFY_OFFSET(disk_blk_cnt, 28);
	VERIFY_OFFSET(data_disks_per_row, 36);
	VERIFY_OFFSET(metadata_disks_per_row, 38);
	VERIFY_OFFSET(row_cnt, 40);
	VERIFY_OFFSET(layout_map_count, 42);
	VERIFY_OFFSET(flags, 44);
	VERIFY_OFFSET(dekindex, 46);
	/* VERIFY_OFFSET(reserved, 48 */
	VERIFY_OFFSET(data, 64);

#undef VERIFY_OFFSET

10024 10025 10026 10027 10028 10029 10030 10031 10032 10033 10034 10035 10036 10037 10038 10039 10040 10041 10042 10043 10044 10045
#define VERIFY_OFFSET(member, offset) \
	BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset)

	VERIFY_OFFSET(IU_type, 0);
	VERIFY_OFFSET(direction, 1);
	VERIFY_OFFSET(reply_queue, 2);
	/* VERIFY_OFFSET(reserved1, 3);  */
	VERIFY_OFFSET(scsi_nexus, 4);
	VERIFY_OFFSET(Tag, 8);
	VERIFY_OFFSET(cdb, 16);
	VERIFY_OFFSET(cciss_lun, 32);
	VERIFY_OFFSET(data_len, 40);
	VERIFY_OFFSET(cmd_priority_task_attr, 44);
	VERIFY_OFFSET(sg_count, 45);
	/* VERIFY_OFFSET(reserved3 */
	VERIFY_OFFSET(err_ptr, 48);
	VERIFY_OFFSET(err_len, 56);
	/* VERIFY_OFFSET(reserved4  */
	VERIFY_OFFSET(sg, 64);

#undef VERIFY_OFFSET

10046 10047 10048 10049 10050 10051 10052 10053 10054 10055 10056 10057 10058 10059 10060 10061 10062 10063 10064 10065 10066 10067 10068 10069 10070
#define VERIFY_OFFSET(member, offset) \
	BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset)

	VERIFY_OFFSET(dev_handle, 0x00);
	VERIFY_OFFSET(reserved1, 0x02);
	VERIFY_OFFSET(function, 0x03);
	VERIFY_OFFSET(reserved2, 0x04);
	VERIFY_OFFSET(err_info, 0x0C);
	VERIFY_OFFSET(reserved3, 0x10);
	VERIFY_OFFSET(err_info_len, 0x12);
	VERIFY_OFFSET(reserved4, 0x13);
	VERIFY_OFFSET(sgl_offset, 0x14);
	VERIFY_OFFSET(reserved5, 0x15);
	VERIFY_OFFSET(transfer_len, 0x1C);
	VERIFY_OFFSET(reserved6, 0x20);
	VERIFY_OFFSET(io_flags, 0x24);
	VERIFY_OFFSET(reserved7, 0x26);
	VERIFY_OFFSET(LUN, 0x34);
	VERIFY_OFFSET(control, 0x3C);
	VERIFY_OFFSET(CDB, 0x40);
	VERIFY_OFFSET(reserved8, 0x50);
	VERIFY_OFFSET(host_context_flags, 0x60);
	VERIFY_OFFSET(timeout_sec, 0x62);
	VERIFY_OFFSET(ReplyQueue, 0x64);
	VERIFY_OFFSET(reserved9, 0x65);
10071
	VERIFY_OFFSET(tag, 0x68);
10072 10073 10074 10075 10076 10077
	VERIFY_OFFSET(host_addr, 0x70);
	VERIFY_OFFSET(CISS_LUN, 0x78);
	VERIFY_OFFSET(SG, 0x78 + 8);
#undef VERIFY_OFFSET
}

10078 10079
module_init(hpsa_init);
module_exit(hpsa_cleanup);