megaraid_sas_base.c 195.3 KB
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/*
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 *  Linux MegaRAID driver for SAS based RAID controllers
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 *
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 *  Copyright (c) 2003-2013  LSI Corporation
 *  Copyright (c) 2013-2014  Avago Technologies
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 *
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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; either version 2
 *  of the License, or (at your option) any later version.
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 *
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 *  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.  See the
 *  GNU General Public License for more details.
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 *
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 *  You should have received a copy of the GNU General Public License
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 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 *
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 *  Authors: Avago Technologies
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 *           Sreenivas Bagalkote
 *           Sumant Patro
 *           Bo Yang
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 *           Adam Radford
 *           Kashyap Desai <kashyap.desai@avagotech.com>
 *           Sumit Saxena <sumit.saxena@avagotech.com>
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 *
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 *  Send feedback to: megaraidlinux.pdl@avagotech.com
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 *
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 *  Mail to: Avago Technologies, 350 West Trimble Road, Building 90,
 *  San Jose, California 95131
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 */

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/list.h>
#include <linux/moduleparam.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/uio.h>
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#include <linux/slab.h>
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#include <asm/uaccess.h>
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#include <linux/fs.h>
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#include <linux/compat.h>
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#include <linux/blkdev.h>
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#include <linux/mutex.h>
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#include <linux/poll.h>
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#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 "megaraid_sas_fusion.h"
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#include "megaraid_sas.h"

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/*
 * Number of sectors per IO command
 * Will be set in megasas_init_mfi if user does not provide
 */
static unsigned int max_sectors;
module_param_named(max_sectors, max_sectors, int, 0);
MODULE_PARM_DESC(max_sectors,
	"Maximum number of sectors per IO command");

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static int msix_disable;
module_param(msix_disable, int, S_IRUGO);
MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");

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static unsigned int msix_vectors;
module_param(msix_vectors, int, S_IRUGO);
MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");

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static int allow_vf_ioctls;
module_param(allow_vf_ioctls, int, S_IRUGO);
MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");

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static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
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module_param(throttlequeuedepth, int, S_IRUGO);
MODULE_PARM_DESC(throttlequeuedepth,
	"Adapter queue depth when throttled due to I/O timeout. Default: 16");

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int resetwaittime = MEGASAS_RESET_WAIT_TIME;
module_param(resetwaittime, int, S_IRUGO);
MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout "
		 "before resetting adapter. Default: 180");

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int smp_affinity_enable = 1;
module_param(smp_affinity_enable, int, S_IRUGO);
MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disbale Default: enable(1)");

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int rdpq_enable = 1;
module_param(rdpq_enable, int, S_IRUGO);
MODULE_PARM_DESC(rdpq_enable, " Allocate reply queue in chunks for large queue depth enable/disable Default: disable(0)");

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unsigned int dual_qdepth_disable;
module_param(dual_qdepth_disable, int, S_IRUGO);
MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");

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MODULE_LICENSE("GPL");
MODULE_VERSION(MEGASAS_VERSION);
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MODULE_AUTHOR("megaraidlinux.pdl@avagotech.com");
MODULE_DESCRIPTION("Avago MegaRAID SAS Driver");
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int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
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static int megasas_get_pd_list(struct megasas_instance *instance);
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static int megasas_ld_list_query(struct megasas_instance *instance,
				 u8 query_type);
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static int megasas_issue_init_mfi(struct megasas_instance *instance);
static int megasas_register_aen(struct megasas_instance *instance,
				u32 seq_num, u32 class_locale_word);
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static int
megasas_get_pd_info(struct megasas_instance *instance, u16 device_id);
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/*
 * PCI ID table for all supported controllers
 */
static struct pci_device_id megasas_pci_table[] = {

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	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
	/* xscale IOP */
	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
	/* ppc IOP */
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	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
	/* ppc IOP */
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	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
	/* gen2*/
	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
	/* gen2*/
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	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
	/* skinny*/
	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
	/* skinny*/
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	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
	/* xscale IOP, vega */
	{PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
	/* xscale IOP */
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	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
	/* Fusion */
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	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
	/* Plasma */
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	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
	/* Invader */
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	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
	/* Fury */
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	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
	/* Intruder */
	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
	/* Intruder 24 port*/
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	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
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	{}
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};

MODULE_DEVICE_TABLE(pci, megasas_pci_table);

static int megasas_mgmt_majorno;
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struct megasas_mgmt_info megasas_mgmt_info;
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static struct fasync_struct *megasas_async_queue;
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static DEFINE_MUTEX(megasas_async_queue_mutex);
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static int megasas_poll_wait_aen;
static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
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static u32 support_poll_for_event;
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u32 megasas_dbg_lvl;
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static u32 support_device_change;
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/* define lock for aen poll */
spinlock_t poll_aen_lock;

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void
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megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
		     u8 alt_status);
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static u32
megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
static int
megasas_adp_reset_gen2(struct megasas_instance *instance,
		       struct megasas_register_set __iomem *reg_set);
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static irqreturn_t megasas_isr(int irq, void *devp);
static u32
megasas_init_adapter_mfi(struct megasas_instance *instance);
u32
megasas_build_and_issue_cmd(struct megasas_instance *instance,
			    struct scsi_cmnd *scmd);
static void megasas_complete_cmd_dpc(unsigned long instance_addr);
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void
megasas_release_fusion(struct megasas_instance *instance);
int
megasas_ioc_init_fusion(struct megasas_instance *instance);
void
megasas_free_cmds_fusion(struct megasas_instance *instance);
u8
megasas_get_map_info(struct megasas_instance *instance);
int
megasas_sync_map_info(struct megasas_instance *instance);
int
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wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
	int seconds);
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void megasas_reset_reply_desc(struct megasas_instance *instance);
void megasas_fusion_ocr_wq(struct work_struct *work);
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static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
					 int initial);
int megasas_check_mpio_paths(struct megasas_instance *instance,
			     struct scsi_cmnd *scmd);
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int
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megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
{
	instance->instancet->fire_cmd(instance,
		cmd->frame_phys_addr, 0, instance->reg_set);
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	return 0;
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}
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/**
 * megasas_get_cmd -	Get a command from the free pool
 * @instance:		Adapter soft state
 *
 * Returns a free command from the pool
 */
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struct megasas_cmd *megasas_get_cmd(struct megasas_instance
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						  *instance)
{
	unsigned long flags;
	struct megasas_cmd *cmd = NULL;

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	spin_lock_irqsave(&instance->mfi_pool_lock, flags);
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	if (!list_empty(&instance->cmd_pool)) {
		cmd = list_entry((&instance->cmd_pool)->next,
				 struct megasas_cmd, list);
		list_del_init(&cmd->list);
	} else {
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		dev_err(&instance->pdev->dev, "Command pool empty!\n");
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	}

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	spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
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	return cmd;
}

/**
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 * megasas_return_cmd -	Return a cmd to free command pool
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 * @instance:		Adapter soft state
 * @cmd:		Command packet to be returned to free command pool
 */
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inline void
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megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
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{
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	unsigned long flags;
	u32 blk_tags;
	struct megasas_cmd_fusion *cmd_fusion;
	struct fusion_context *fusion = instance->ctrl_context;

	/* This flag is used only for fusion adapter.
	 * Wait for Interrupt for Polled mode DCMD
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	 */
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	if (cmd->flags & DRV_DCMD_POLLED_MODE)
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		return;
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	spin_lock_irqsave(&instance->mfi_pool_lock, flags);

	if (fusion) {
		blk_tags = instance->max_scsi_cmds + cmd->index;
		cmd_fusion = fusion->cmd_list[blk_tags];
		megasas_return_cmd_fusion(instance, cmd_fusion);
	}
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	cmd->scmd = NULL;
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	cmd->frame_count = 0;
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	cmd->flags = 0;
	if (!fusion && reset_devices)
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		cmd->frame->hdr.cmd = MFI_CMD_INVALID;
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	list_add(&cmd->list, (&instance->cmd_pool)->next);

	spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
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}
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static const char *
format_timestamp(uint32_t timestamp)
{
	static char buffer[32];

	if ((timestamp & 0xff000000) == 0xff000000)
		snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
		0x00ffffff);
	else
		snprintf(buffer, sizeof(buffer), "%us", timestamp);
	return buffer;
}

static const char *
format_class(int8_t class)
{
	static char buffer[6];

	switch (class) {
	case MFI_EVT_CLASS_DEBUG:
		return "debug";
	case MFI_EVT_CLASS_PROGRESS:
		return "progress";
	case MFI_EVT_CLASS_INFO:
		return "info";
	case MFI_EVT_CLASS_WARNING:
		return "WARN";
	case MFI_EVT_CLASS_CRITICAL:
		return "CRIT";
	case MFI_EVT_CLASS_FATAL:
		return "FATAL";
	case MFI_EVT_CLASS_DEAD:
		return "DEAD";
	default:
		snprintf(buffer, sizeof(buffer), "%d", class);
		return buffer;
	}
}

/**
  * megasas_decode_evt: Decode FW AEN event and print critical event
  * for information.
  * @instance:			Adapter soft state
  */
static void
megasas_decode_evt(struct megasas_instance *instance)
{
	struct megasas_evt_detail *evt_detail = instance->evt_detail;
	union megasas_evt_class_locale class_locale;
	class_locale.word = le32_to_cpu(evt_detail->cl.word);

	if (class_locale.members.class >= MFI_EVT_CLASS_CRITICAL)
		dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
			le32_to_cpu(evt_detail->seq_num),
			format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
			(class_locale.members.locale),
			format_class(class_locale.members.class),
			evt_detail->description);
}

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/**
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*	The following functions are defined for xscale
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*	(deviceid : 1064R, PERC5) controllers
*/

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/**
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 * megasas_enable_intr_xscale -	Enables interrupts
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 * @regs:			MFI register set
 */
static inline void
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megasas_enable_intr_xscale(struct megasas_instance *instance)
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{
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	struct megasas_register_set __iomem *regs;
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	regs = instance->reg_set;
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	writel(0, &(regs)->outbound_intr_mask);
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	/* Dummy readl to force pci flush */
	readl(&regs->outbound_intr_mask);
}

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/**
 * megasas_disable_intr_xscale -Disables interrupt
 * @regs:			MFI register set
 */
static inline void
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megasas_disable_intr_xscale(struct megasas_instance *instance)
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{
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	struct megasas_register_set __iomem *regs;
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	u32 mask = 0x1f;
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	regs = instance->reg_set;
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	writel(mask, &regs->outbound_intr_mask);
	/* Dummy readl to force pci flush */
	readl(&regs->outbound_intr_mask);
}

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/**
 * megasas_read_fw_status_reg_xscale - returns the current FW status value
 * @regs:			MFI register set
 */
static u32
megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
{
	return readl(&(regs)->outbound_msg_0);
}
/**
 * megasas_clear_interrupt_xscale -	Check & clear interrupt
 * @regs:				MFI register set
 */
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static int
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megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
{
	u32 status;
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	u32 mfiStatus = 0;
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	/*
	 * Check if it is our interrupt
	 */
	status = readl(&regs->outbound_intr_status);

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	if (status & MFI_OB_INTR_STATUS_MASK)
		mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
	if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
		mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
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	/*
	 * Clear the interrupt by writing back the same value
	 */
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	if (mfiStatus)
		writel(status, &regs->outbound_intr_status);
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	/* Dummy readl to force pci flush */
	readl(&regs->outbound_intr_status);

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	return mfiStatus;
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}

/**
 * megasas_fire_cmd_xscale -	Sends command to the FW
 * @frame_phys_addr :		Physical address of cmd
 * @frame_count :		Number of frames for the command
 * @regs :			MFI register set
 */
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static inline void
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megasas_fire_cmd_xscale(struct megasas_instance *instance,
		dma_addr_t frame_phys_addr,
		u32 frame_count,
		struct megasas_register_set __iomem *regs)
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{
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	unsigned long flags;
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	spin_lock_irqsave(&instance->hba_lock, flags);
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	writel((frame_phys_addr >> 3)|(frame_count),
	       &(regs)->inbound_queue_port);
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	spin_unlock_irqrestore(&instance->hba_lock, flags);
}

/**
 * megasas_adp_reset_xscale -  For controller reset
 * @regs:                              MFI register set
 */
static int
megasas_adp_reset_xscale(struct megasas_instance *instance,
	struct megasas_register_set __iomem *regs)
{
	u32 i;
	u32 pcidata;
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	writel(MFI_ADP_RESET, &regs->inbound_doorbell);

	for (i = 0; i < 3; i++)
		msleep(1000); /* sleep for 3 secs */
	pcidata  = 0;
	pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
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	dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
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	if (pcidata & 0x2) {
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		dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
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		pcidata &= ~0x2;
		pci_write_config_dword(instance->pdev,
				MFI_1068_PCSR_OFFSET, pcidata);

		for (i = 0; i < 2; i++)
			msleep(1000); /* need to wait 2 secs again */

		pcidata  = 0;
		pci_read_config_dword(instance->pdev,
				MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
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		dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
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		if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
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			dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
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			pcidata = 0;
			pci_write_config_dword(instance->pdev,
				MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
		}
	}
	return 0;
}

/**
 * megasas_check_reset_xscale -	For controller reset check
 * @regs:				MFI register set
 */
static int
megasas_check_reset_xscale(struct megasas_instance *instance,
		struct megasas_register_set __iomem *regs)
{
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	if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
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	    (le32_to_cpu(*instance->consumer) ==
		MEGASAS_ADPRESET_INPROG_SIGN))
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		return 1;
	return 0;
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}

static struct megasas_instance_template megasas_instance_template_xscale = {

	.fire_cmd = megasas_fire_cmd_xscale,
	.enable_intr = megasas_enable_intr_xscale,
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	.disable_intr = megasas_disable_intr_xscale,
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	.clear_intr = megasas_clear_intr_xscale,
	.read_fw_status_reg = megasas_read_fw_status_reg_xscale,
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	.adp_reset = megasas_adp_reset_xscale,
	.check_reset = megasas_check_reset_xscale,
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	.service_isr = megasas_isr,
	.tasklet = megasas_complete_cmd_dpc,
	.init_adapter = megasas_init_adapter_mfi,
	.build_and_issue_cmd = megasas_build_and_issue_cmd,
	.issue_dcmd = megasas_issue_dcmd,
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};

/**
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*	This is the end of set of functions & definitions specific
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*	to xscale (deviceid : 1064R, PERC5) controllers
*/

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/**
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*	The following functions are defined for ppc (deviceid : 0x60)
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*	controllers
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*/

/**
 * megasas_enable_intr_ppc -	Enables interrupts
 * @regs:			MFI register set
 */
static inline void
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megasas_enable_intr_ppc(struct megasas_instance *instance)
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{
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	struct megasas_register_set __iomem *regs;
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	regs = instance->reg_set;
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	writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
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	writel(~0x80000000, &(regs)->outbound_intr_mask);
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	/* Dummy readl to force pci flush */
	readl(&regs->outbound_intr_mask);
}

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/**
 * megasas_disable_intr_ppc -	Disable interrupt
 * @regs:			MFI register set
 */
static inline void
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megasas_disable_intr_ppc(struct megasas_instance *instance)
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{
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	struct megasas_register_set __iomem *regs;
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	u32 mask = 0xFFFFFFFF;
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	regs = instance->reg_set;
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	writel(mask, &regs->outbound_intr_mask);
	/* Dummy readl to force pci flush */
	readl(&regs->outbound_intr_mask);
}

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/**
 * megasas_read_fw_status_reg_ppc - returns the current FW status value
 * @regs:			MFI register set
 */
static u32
megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
{
	return readl(&(regs)->outbound_scratch_pad);
}

/**
 * megasas_clear_interrupt_ppc -	Check & clear interrupt
 * @regs:				MFI register set
 */
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static int
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megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
{
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	u32 status, mfiStatus = 0;

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	/*
	 * Check if it is our interrupt
	 */
	status = readl(&regs->outbound_intr_status);

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	if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
		mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;

	if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
		mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
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	/*
	 * Clear the interrupt by writing back the same value
	 */
	writel(status, &regs->outbound_doorbell_clear);

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	/* Dummy readl to force pci flush */
	readl(&regs->outbound_doorbell_clear);

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	return mfiStatus;
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}
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/**
 * megasas_fire_cmd_ppc -	Sends command to the FW
 * @frame_phys_addr :		Physical address of cmd
 * @frame_count :		Number of frames for the command
 * @regs :			MFI register set
 */
600
static inline void
601 602 603 604
megasas_fire_cmd_ppc(struct megasas_instance *instance,
		dma_addr_t frame_phys_addr,
		u32 frame_count,
		struct megasas_register_set __iomem *regs)
605
{
606
	unsigned long flags;
607

608
	spin_lock_irqsave(&instance->hba_lock, flags);
609
	writel((frame_phys_addr | (frame_count<<1))|1,
610
			&(regs)->inbound_queue_port);
611
	spin_unlock_irqrestore(&instance->hba_lock, flags);
612 613
}

614 615 616 617 618 619 620 621
/**
 * megasas_check_reset_ppc -	For controller reset check
 * @regs:				MFI register set
 */
static int
megasas_check_reset_ppc(struct megasas_instance *instance,
			struct megasas_register_set __iomem *regs)
{
622
	if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
623 624
		return 1;

625 626
	return 0;
}
627

628
static struct megasas_instance_template megasas_instance_template_ppc = {
629

630 631
	.fire_cmd = megasas_fire_cmd_ppc,
	.enable_intr = megasas_enable_intr_ppc,
632
	.disable_intr = megasas_disable_intr_ppc,
633 634
	.clear_intr = megasas_clear_intr_ppc,
	.read_fw_status_reg = megasas_read_fw_status_reg_ppc,
635
	.adp_reset = megasas_adp_reset_xscale,
636
	.check_reset = megasas_check_reset_ppc,
637 638 639 640 641
	.service_isr = megasas_isr,
	.tasklet = megasas_complete_cmd_dpc,
	.init_adapter = megasas_init_adapter_mfi,
	.build_and_issue_cmd = megasas_build_and_issue_cmd,
	.issue_dcmd = megasas_issue_dcmd,
642 643
};

644 645 646 647 648
/**
 * megasas_enable_intr_skinny -	Enables interrupts
 * @regs:			MFI register set
 */
static inline void
649
megasas_enable_intr_skinny(struct megasas_instance *instance)
650
{
651
	struct megasas_register_set __iomem *regs;
652

653
	regs = instance->reg_set;
654 655 656 657 658 659 660 661 662 663 664 665 666
	writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);

	writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);

	/* Dummy readl to force pci flush */
	readl(&regs->outbound_intr_mask);
}

/**
 * megasas_disable_intr_skinny -	Disables interrupt
 * @regs:			MFI register set
 */
static inline void
667
megasas_disable_intr_skinny(struct megasas_instance *instance)
668
{
669
	struct megasas_register_set __iomem *regs;
670
	u32 mask = 0xFFFFFFFF;
671

672
	regs = instance->reg_set;
673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695
	writel(mask, &regs->outbound_intr_mask);
	/* Dummy readl to force pci flush */
	readl(&regs->outbound_intr_mask);
}

/**
 * megasas_read_fw_status_reg_skinny - returns the current FW status value
 * @regs:			MFI register set
 */
static u32
megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
{
	return readl(&(regs)->outbound_scratch_pad);
}

/**
 * megasas_clear_interrupt_skinny -	Check & clear interrupt
 * @regs:				MFI register set
 */
static int
megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
{
	u32 status;
696 697
	u32 mfiStatus = 0;

698 699 700 701 702 703
	/*
	 * Check if it is our interrupt
	 */
	status = readl(&regs->outbound_intr_status);

	if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
704
		return 0;
705 706
	}

707 708 709
	/*
	 * Check if it is our interrupt
	 */
710
	if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
711 712 713 714 715
	    MFI_STATE_FAULT) {
		mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
	} else
		mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;

716 717 718 719 720 721
	/*
	 * Clear the interrupt by writing back the same value
	 */
	writel(status, &regs->outbound_intr_status);

	/*
722 723
	 * dummy read to flush PCI
	 */
724 725
	readl(&regs->outbound_intr_status);

726
	return mfiStatus;
727 728 729 730 731 732 733 734 735
}

/**
 * megasas_fire_cmd_skinny -	Sends command to the FW
 * @frame_phys_addr :		Physical address of cmd
 * @frame_count :		Number of frames for the command
 * @regs :			MFI register set
 */
static inline void
736 737 738
megasas_fire_cmd_skinny(struct megasas_instance *instance,
			dma_addr_t frame_phys_addr,
			u32 frame_count,
739 740
			struct megasas_register_set __iomem *regs)
{
741
	unsigned long flags;
742

743
	spin_lock_irqsave(&instance->hba_lock, flags);
744 745 746 747
	writel(upper_32_bits(frame_phys_addr),
	       &(regs)->inbound_high_queue_port);
	writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
	       &(regs)->inbound_low_queue_port);
748 749 750 751 752 753 754 755 756 757 758
	spin_unlock_irqrestore(&instance->hba_lock, flags);
}

/**
 * megasas_check_reset_skinny -	For controller reset check
 * @regs:				MFI register set
 */
static int
megasas_check_reset_skinny(struct megasas_instance *instance,
				struct megasas_register_set __iomem *regs)
{
759
	if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
760 761
		return 1;

762
	return 0;
763 764 765 766 767 768 769 770 771
}

static struct megasas_instance_template megasas_instance_template_skinny = {

	.fire_cmd = megasas_fire_cmd_skinny,
	.enable_intr = megasas_enable_intr_skinny,
	.disable_intr = megasas_disable_intr_skinny,
	.clear_intr = megasas_clear_intr_skinny,
	.read_fw_status_reg = megasas_read_fw_status_reg_skinny,
772
	.adp_reset = megasas_adp_reset_gen2,
773
	.check_reset = megasas_check_reset_skinny,
774 775 776 777 778
	.service_isr = megasas_isr,
	.tasklet = megasas_complete_cmd_dpc,
	.init_adapter = megasas_init_adapter_mfi,
	.build_and_issue_cmd = megasas_build_and_issue_cmd,
	.issue_dcmd = megasas_issue_dcmd,
779 780 781
};


782 783 784 785 786 787 788 789 790 791
/**
*	The following functions are defined for gen2 (deviceid : 0x78 0x79)
*	controllers
*/

/**
 * megasas_enable_intr_gen2 -  Enables interrupts
 * @regs:                      MFI register set
 */
static inline void
792
megasas_enable_intr_gen2(struct megasas_instance *instance)
793
{
794
	struct megasas_register_set __iomem *regs;
795

796
	regs = instance->reg_set;
797 798 799 800 801 802 803 804 805 806 807 808 809 810
	writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);

	/* write ~0x00000005 (4 & 1) to the intr mask*/
	writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);

	/* Dummy readl to force pci flush */
	readl(&regs->outbound_intr_mask);
}

/**
 * megasas_disable_intr_gen2 - Disables interrupt
 * @regs:                      MFI register set
 */
static inline void
811
megasas_disable_intr_gen2(struct megasas_instance *instance)
812
{
813
	struct megasas_register_set __iomem *regs;
814
	u32 mask = 0xFFFFFFFF;
815

816
	regs = instance->reg_set;
817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839
	writel(mask, &regs->outbound_intr_mask);
	/* Dummy readl to force pci flush */
	readl(&regs->outbound_intr_mask);
}

/**
 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
 * @regs:                      MFI register set
 */
static u32
megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
{
	return readl(&(regs)->outbound_scratch_pad);
}

/**
 * megasas_clear_interrupt_gen2 -      Check & clear interrupt
 * @regs:                              MFI register set
 */
static int
megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
{
	u32 status;
840
	u32 mfiStatus = 0;
841

842 843 844 845 846
	/*
	 * Check if it is our interrupt
	 */
	status = readl(&regs->outbound_intr_status);

847
	if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
848 849 850 851 852
		mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
	}
	if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
		mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
	}
853 854 855 856

	/*
	 * Clear the interrupt by writing back the same value
	 */
857 858
	if (mfiStatus)
		writel(status, &regs->outbound_doorbell_clear);
859 860 861 862

	/* Dummy readl to force pci flush */
	readl(&regs->outbound_intr_status);

863
	return mfiStatus;
864 865 866 867 868 869 870 871
}
/**
 * megasas_fire_cmd_gen2 -     Sends command to the FW
 * @frame_phys_addr :          Physical address of cmd
 * @frame_count :              Number of frames for the command
 * @regs :                     MFI register set
 */
static inline void
872 873 874
megasas_fire_cmd_gen2(struct megasas_instance *instance,
			dma_addr_t frame_phys_addr,
			u32 frame_count,
875 876
			struct megasas_register_set __iomem *regs)
{
877
	unsigned long flags;
878

879
	spin_lock_irqsave(&instance->hba_lock, flags);
880 881
	writel((frame_phys_addr | (frame_count<<1))|1,
			&(regs)->inbound_queue_port);
882 883 884 885 886 887 888 889 890 891 892
	spin_unlock_irqrestore(&instance->hba_lock, flags);
}

/**
 * megasas_adp_reset_gen2 -	For controller reset
 * @regs:				MFI register set
 */
static int
megasas_adp_reset_gen2(struct megasas_instance *instance,
			struct megasas_register_set __iomem *reg_set)
{
893 894 895 896
	u32 retry = 0 ;
	u32 HostDiag;
	u32 __iomem *seq_offset = &reg_set->seq_offset;
	u32 __iomem *hostdiag_offset = &reg_set->host_diag;
897 898 899 900 901 902 903 904 905 906 907 908

	if (instance->instancet == &megasas_instance_template_skinny) {
		seq_offset = &reg_set->fusion_seq_offset;
		hostdiag_offset = &reg_set->fusion_host_diag;
	}

	writel(0, seq_offset);
	writel(4, seq_offset);
	writel(0xb, seq_offset);
	writel(2, seq_offset);
	writel(7, seq_offset);
	writel(0xd, seq_offset);
909 910 911

	msleep(1000);

912
	HostDiag = (u32)readl(hostdiag_offset);
913

914
	while (!(HostDiag & DIAG_WRITE_ENABLE)) {
915
		msleep(100);
916
		HostDiag = (u32)readl(hostdiag_offset);
917
		dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
918 919 920 921 922 923 924
					retry, HostDiag);

		if (retry++ >= 100)
			return 1;

	}

925
	dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
926

927
	writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
928 929 930

	ssleep(10);

931
	HostDiag = (u32)readl(hostdiag_offset);
932
	while (HostDiag & DIAG_RESET_ADAPTER) {
933
		msleep(100);
934
		HostDiag = (u32)readl(hostdiag_offset);
935
		dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952
				retry, HostDiag);

		if (retry++ >= 1000)
			return 1;

	}
	return 0;
}

/**
 * megasas_check_reset_gen2 -	For controller reset check
 * @regs:				MFI register set
 */
static int
megasas_check_reset_gen2(struct megasas_instance *instance,
		struct megasas_register_set __iomem *regs)
{
953
	if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
954 955
		return 1;

956
	return 0;
957 958 959 960 961 962 963 964 965
}

static struct megasas_instance_template megasas_instance_template_gen2 = {

	.fire_cmd = megasas_fire_cmd_gen2,
	.enable_intr = megasas_enable_intr_gen2,
	.disable_intr = megasas_disable_intr_gen2,
	.clear_intr = megasas_clear_intr_gen2,
	.read_fw_status_reg = megasas_read_fw_status_reg_gen2,
966 967
	.adp_reset = megasas_adp_reset_gen2,
	.check_reset = megasas_check_reset_gen2,
968 969 970 971 972
	.service_isr = megasas_isr,
	.tasklet = megasas_complete_cmd_dpc,
	.init_adapter = megasas_init_adapter_mfi,
	.build_and_issue_cmd = megasas_build_and_issue_cmd,
	.issue_dcmd = megasas_issue_dcmd,
973 974
};

975 976
/**
*	This is the end of set of functions & definitions
977
*       specific to gen2 (deviceid : 0x78, 0x79) controllers
978 979
*/

980 981 982 983 984
/*
 * Template added for TB (Fusion)
 */
extern struct megasas_instance_template megasas_instance_template_fusion;

985 986 987
/**
 * megasas_issue_polled -	Issues a polling command
 * @instance:			Adapter soft state
988
 * @cmd:			Command packet to be issued
989
 *
990
 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
991
 */
992
int
993 994 995 996
megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
{
	struct megasas_header *frame_hdr = &cmd->frame->hdr;

997
	frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
998
	frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
999

1000
	if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) ||
1001 1002 1003 1004 1005
		(instance->instancet->issue_dcmd(instance, cmd))) {
		dev_err(&instance->pdev->dev, "Failed from %s %d\n",
			__func__, __LINE__);
		return DCMD_NOT_FIRED;
	}
1006

1007 1008
	return wait_and_poll(instance, cmd, instance->requestorId ?
			MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1009 1010 1011 1012 1013 1014
}

/**
 * megasas_issue_blocked_cmd -	Synchronous wrapper around regular FW cmds
 * @instance:			Adapter soft state
 * @cmd:			Command to be issued
1015
 * @timeout:			Timeout in seconds
1016 1017
 *
 * This function waits on an event for the command to be returned from ISR.
1018
 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1019 1020
 * Used to issue ioctl commands.
 */
1021
int
1022
megasas_issue_blocked_cmd(struct megasas_instance *instance,
1023
			  struct megasas_cmd *cmd, int timeout)
1024
{
1025
	int ret = 0;
1026
	cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1027

1028
	if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) ||
1029 1030 1031 1032 1033 1034
		(instance->instancet->issue_dcmd(instance, cmd))) {
		dev_err(&instance->pdev->dev, "Failed from %s %d\n",
			__func__, __LINE__);
		return DCMD_NOT_FIRED;
	}

1035 1036
	if (timeout) {
		ret = wait_event_timeout(instance->int_cmd_wait_q,
1037
				cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1038 1039 1040 1041 1042
		if (!ret) {
			dev_err(&instance->pdev->dev, "Failed from %s %d DCMD Timed out\n",
				__func__, __LINE__);
			return DCMD_TIMEOUT;
		}
1043 1044
	} else
		wait_event(instance->int_cmd_wait_q,
1045
				cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1046

1047
	return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1048
		DCMD_SUCCESS : DCMD_FAILED;
1049 1050 1051 1052 1053 1054
}

/**
 * megasas_issue_blocked_abort_cmd -	Aborts previously issued cmd
 * @instance:				Adapter soft state
 * @cmd_to_abort:			Previously issued cmd to be aborted
1055
 * @timeout:				Timeout in seconds
1056
 *
1057
 * MFI firmware can abort previously issued AEN comamnd (automatic event
1058
 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1059 1060
 * cmd and waits for return status.
 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1061 1062 1063
 */
static int
megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1064
				struct megasas_cmd *cmd_to_abort, int timeout)
1065 1066 1067
{
	struct megasas_cmd *cmd;
	struct megasas_abort_frame *abort_fr;
1068
	int ret = 0;
1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080

	cmd = megasas_get_cmd(instance);

	if (!cmd)
		return -1;

	abort_fr = &cmd->frame->abort;

	/*
	 * Prepare and issue the abort frame
	 */
	abort_fr->cmd = MFI_CMD_ABORT;
1081
	abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1082 1083 1084 1085 1086 1087
	abort_fr->flags = cpu_to_le16(0);
	abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
	abort_fr->abort_mfi_phys_addr_lo =
		cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
	abort_fr->abort_mfi_phys_addr_hi =
		cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1088 1089

	cmd->sync_cmd = 1;
1090
	cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1091

1092
	if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) ||
1093 1094 1095 1096 1097
		(instance->instancet->issue_dcmd(instance, cmd))) {
		dev_err(&instance->pdev->dev, "Failed from %s %d\n",
			__func__, __LINE__);
		return DCMD_NOT_FIRED;
	}
1098

1099 1100
	if (timeout) {
		ret = wait_event_timeout(instance->abort_cmd_wait_q,
1101
				cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1102
		if (!ret) {
1103 1104 1105
			dev_err(&instance->pdev->dev, "Failed from %s %d Abort Timed out\n",
				__func__, __LINE__);
			return DCMD_TIMEOUT;
1106 1107 1108
		}
	} else
		wait_event(instance->abort_cmd_wait_q,
1109
				cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1110

1111
	cmd->sync_cmd = 0;
1112 1113

	megasas_return_cmd(instance, cmd);
1114 1115
	return (cmd->cmd_status_drv == MFI_STAT_OK) ?
		DCMD_SUCCESS : DCMD_FAILED;
1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126
}

/**
 * megasas_make_sgl32 -	Prepares 32-bit SGL
 * @instance:		Adapter soft state
 * @scp:		SCSI command from the mid-layer
 * @mfi_sgl:		SGL to be filled in
 *
 * If successful, this function returns the number of SG elements. Otherwise,
 * it returnes -1.
 */
1127
static int
1128 1129 1130 1131 1132 1133 1134
megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
		   union megasas_sgl *mfi_sgl)
{
	int i;
	int sge_count;
	struct scatterlist *os_sgl;

1135 1136
	sge_count = scsi_dma_map(scp);
	BUG_ON(sge_count < 0);
1137

1138 1139
	if (sge_count) {
		scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1140 1141
			mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
			mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1142
		}
1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155
	}
	return sge_count;
}

/**
 * megasas_make_sgl64 -	Prepares 64-bit SGL
 * @instance:		Adapter soft state
 * @scp:		SCSI command from the mid-layer
 * @mfi_sgl:		SGL to be filled in
 *
 * If successful, this function returns the number of SG elements. Otherwise,
 * it returnes -1.
 */
1156
static int
1157 1158 1159 1160 1161 1162 1163
megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
		   union megasas_sgl *mfi_sgl)
{
	int i;
	int sge_count;
	struct scatterlist *os_sgl;

1164 1165
	sge_count = scsi_dma_map(scp);
	BUG_ON(sge_count < 0);
1166

1167 1168
	if (sge_count) {
		scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1169 1170
			mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
			mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1171
		}
1172 1173 1174 1175
	}
	return sge_count;
}

1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196
/**
 * megasas_make_sgl_skinny - Prepares IEEE SGL
 * @instance:           Adapter soft state
 * @scp:                SCSI command from the mid-layer
 * @mfi_sgl:            SGL to be filled in
 *
 * If successful, this function returns the number of SG elements. Otherwise,
 * it returnes -1.
 */
static int
megasas_make_sgl_skinny(struct megasas_instance *instance,
		struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
{
	int i;
	int sge_count;
	struct scatterlist *os_sgl;

	sge_count = scsi_dma_map(scp);

	if (sge_count) {
		scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1197 1198
			mfi_sgl->sge_skinny[i].length =
				cpu_to_le32(sg_dma_len(os_sgl));
1199
			mfi_sgl->sge_skinny[i].phys_addr =
1200 1201
				cpu_to_le64(sg_dma_address(os_sgl));
			mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1202 1203 1204 1205 1206
		}
	}
	return sge_count;
}

1207 1208
 /**
 * megasas_get_frame_count - Computes the number of frames
1209
 * @frame_type		: type of frame- io or pthru frame
1210 1211 1212 1213 1214
 * @sge_count		: number of sg elements
 *
 * Returns the number of frames required for numnber of sge's (sge_count)
 */

1215 1216
static u32 megasas_get_frame_count(struct megasas_instance *instance,
			u8 sge_count, u8 frame_type)
1217 1218 1219 1220
{
	int num_cnt;
	int sge_bytes;
	u32 sge_sz;
1221
	u32 frame_count = 0;
1222 1223 1224 1225

	sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
	    sizeof(struct megasas_sge32);

1226 1227 1228 1229
	if (instance->flag_ieee) {
		sge_sz = sizeof(struct megasas_sge_skinny);
	}

1230
	/*
1231 1232 1233 1234 1235 1236
	 * Main frame can contain 2 SGEs for 64-bit SGLs and
	 * 3 SGEs for 32-bit SGLs for ldio &
	 * 1 SGEs for 64-bit SGLs and
	 * 2 SGEs for 32-bit SGLs for pthru frame
	 */
	if (unlikely(frame_type == PTHRU_FRAME)) {
1237 1238 1239
		if (instance->flag_ieee == 1) {
			num_cnt = sge_count - 1;
		} else if (IS_DMA64)
1240 1241 1242 1243
			num_cnt = sge_count - 1;
		else
			num_cnt = sge_count - 2;
	} else {
1244 1245 1246
		if (instance->flag_ieee == 1) {
			num_cnt = sge_count - 1;
		} else if (IS_DMA64)
1247 1248 1249 1250
			num_cnt = sge_count - 2;
		else
			num_cnt = sge_count - 3;
	}
1251

1252
	if (num_cnt > 0) {
1253 1254 1255 1256 1257 1258
		sge_bytes = sge_sz * num_cnt;

		frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
		    ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
	}
	/* Main frame */
1259
	frame_count += 1;
1260 1261 1262 1263 1264 1265

	if (frame_count > 7)
		frame_count = 8;
	return frame_count;
}

1266 1267 1268 1269 1270 1271 1272 1273 1274
/**
 * megasas_build_dcdb -	Prepares a direct cdb (DCDB) command
 * @instance:		Adapter soft state
 * @scp:		SCSI command
 * @cmd:		Command to be prepared in
 *
 * This function prepares CDB commands. These are typcially pass-through
 * commands to the devices.
 */
1275
static int
1276 1277 1278 1279 1280 1281 1282 1283 1284
megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
		   struct megasas_cmd *cmd)
{
	u32 is_logical;
	u32 device_id;
	u16 flags = 0;
	struct megasas_pthru_frame *pthru;

	is_logical = MEGASAS_IS_LOGICAL(scp);
1285
	device_id = MEGASAS_DEV_INDEX(scp);
1286 1287 1288 1289 1290 1291 1292 1293 1294
	pthru = (struct megasas_pthru_frame *)cmd->frame;

	if (scp->sc_data_direction == PCI_DMA_TODEVICE)
		flags = MFI_FRAME_DIR_WRITE;
	else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
		flags = MFI_FRAME_DIR_READ;
	else if (scp->sc_data_direction == PCI_DMA_NONE)
		flags = MFI_FRAME_DIR_NONE;

1295 1296 1297 1298
	if (instance->flag_ieee == 1) {
		flags |= MFI_FRAME_IEEE;
	}

1299 1300 1301 1302 1303 1304 1305 1306 1307 1308
	/*
	 * Prepare the DCDB frame
	 */
	pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
	pthru->cmd_status = 0x0;
	pthru->scsi_status = 0x0;
	pthru->target_id = device_id;
	pthru->lun = scp->device->lun;
	pthru->cdb_len = scp->cmd_len;
	pthru->timeout = 0;
1309
	pthru->pad_0 = 0;
1310 1311
	pthru->flags = cpu_to_le16(flags);
	pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1312 1313 1314

	memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);

1315
	/*
1316 1317 1318
	 * If the command is for the tape device, set the
	 * pthru timeout to the os layer timeout value.
	 */
1319 1320
	if (scp->device->type == TYPE_TAPE) {
		if ((scp->request->timeout / HZ) > 0xFFFF)
1321
			pthru->timeout = cpu_to_le16(0xFFFF);
1322
		else
1323
			pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1324 1325
	}

1326 1327 1328
	/*
	 * Construct SGL
	 */
1329
	if (instance->flag_ieee == 1) {
1330
		pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1331 1332 1333
		pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
						      &pthru->sgl);
	} else if (IS_DMA64) {
1334
		pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1335 1336 1337 1338 1339 1340
		pthru->sge_count = megasas_make_sgl64(instance, scp,
						      &pthru->sgl);
	} else
		pthru->sge_count = megasas_make_sgl32(instance, scp,
						      &pthru->sgl);

1341
	if (pthru->sge_count > instance->max_num_sge) {
1342
		dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1343 1344 1345 1346
			pthru->sge_count);
		return 0;
	}

1347 1348 1349 1350
	/*
	 * Sense info specific
	 */
	pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1351 1352 1353 1354
	pthru->sense_buf_phys_addr_hi =
		cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
	pthru->sense_buf_phys_addr_lo =
		cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1355 1356 1357 1358 1359

	/*
	 * Compute the total number of frames this command consumes. FW uses
	 * this number to pull sufficient number of frames from host memory.
	 */
1360
	cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1361
							PTHRU_FRAME);
1362 1363 1364 1365 1366 1367 1368 1369

	return cmd->frame_count;
}

/**
 * megasas_build_ldio -	Prepares IOs to logical devices
 * @instance:		Adapter soft state
 * @scp:		SCSI command
1370
 * @cmd:		Command to be prepared
1371 1372 1373
 *
 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
 */
1374
static int
1375 1376 1377 1378 1379 1380 1381 1382
megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
		   struct megasas_cmd *cmd)
{
	u32 device_id;
	u8 sc = scp->cmnd[0];
	u16 flags = 0;
	struct megasas_io_frame *ldio;

1383
	device_id = MEGASAS_DEV_INDEX(scp);
1384 1385 1386 1387 1388 1389 1390
	ldio = (struct megasas_io_frame *)cmd->frame;

	if (scp->sc_data_direction == PCI_DMA_TODEVICE)
		flags = MFI_FRAME_DIR_WRITE;
	else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
		flags = MFI_FRAME_DIR_READ;

1391 1392 1393 1394
	if (instance->flag_ieee == 1) {
		flags |= MFI_FRAME_IEEE;
	}

1395
	/*
1396
	 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1397 1398 1399 1400 1401 1402 1403 1404
	 */
	ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
	ldio->cmd_status = 0x0;
	ldio->scsi_status = 0x0;
	ldio->target_id = device_id;
	ldio->timeout = 0;
	ldio->reserved_0 = 0;
	ldio->pad_0 = 0;
1405
	ldio->flags = cpu_to_le16(flags);
1406 1407 1408 1409 1410 1411 1412
	ldio->start_lba_hi = 0;
	ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;

	/*
	 * 6-byte READ(0x08) or WRITE(0x0A) cdb
	 */
	if (scp->cmd_len == 6) {
1413 1414 1415 1416
		ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
		ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
						 ((u32) scp->cmnd[2] << 8) |
						 (u32) scp->cmnd[3]);
1417

1418
		ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1419 1420 1421 1422 1423 1424
	}

	/*
	 * 10-byte READ(0x28) or WRITE(0x2A) cdb
	 */
	else if (scp->cmd_len == 10) {
1425 1426 1427 1428 1429 1430
		ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
					      ((u32) scp->cmnd[7] << 8));
		ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
						 ((u32) scp->cmnd[3] << 16) |
						 ((u32) scp->cmnd[4] << 8) |
						 (u32) scp->cmnd[5]);
1431 1432 1433 1434 1435 1436
	}

	/*
	 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
	 */
	else if (scp->cmd_len == 12) {
1437 1438 1439 1440
		ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
					      ((u32) scp->cmnd[7] << 16) |
					      ((u32) scp->cmnd[8] << 8) |
					      (u32) scp->cmnd[9]);
1441

1442 1443 1444 1445
		ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
						 ((u32) scp->cmnd[3] << 16) |
						 ((u32) scp->cmnd[4] << 8) |
						 (u32) scp->cmnd[5]);
1446 1447 1448 1449 1450 1451
	}

	/*
	 * 16-byte READ(0x88) or WRITE(0x8A) cdb
	 */
	else if (scp->cmd_len == 16) {
1452 1453 1454 1455
		ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
					      ((u32) scp->cmnd[11] << 16) |
					      ((u32) scp->cmnd[12] << 8) |
					      (u32) scp->cmnd[13]);
1456

1457 1458 1459 1460
		ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
						 ((u32) scp->cmnd[7] << 16) |
						 ((u32) scp->cmnd[8] << 8) |
						 (u32) scp->cmnd[9]);
1461

1462 1463 1464 1465
		ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
						 ((u32) scp->cmnd[3] << 16) |
						 ((u32) scp->cmnd[4] << 8) |
						 (u32) scp->cmnd[5]);
1466 1467 1468 1469 1470 1471

	}

	/*
	 * Construct SGL
	 */
1472
	if (instance->flag_ieee) {
1473
		ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1474 1475 1476
		ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
					      &ldio->sgl);
	} else if (IS_DMA64) {
1477
		ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1478 1479 1480 1481
		ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
	} else
		ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);

1482
	if (ldio->sge_count > instance->max_num_sge) {
1483
		dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1484 1485 1486 1487
			ldio->sge_count);
		return 0;
	}

1488 1489 1490 1491 1492
	/*
	 * Sense info specific
	 */
	ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
	ldio->sense_buf_phys_addr_hi = 0;
1493
	ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1494

1495 1496 1497 1498
	/*
	 * Compute the total number of frames this command consumes. FW uses
	 * this number to pull sufficient number of frames from host memory.
	 */
1499 1500
	cmd->frame_count = megasas_get_frame_count(instance,
			ldio->sge_count, IO_FRAME);
1501 1502 1503 1504 1505

	return cmd->frame_count;
}

/**
1506 1507
 * megasas_cmd_type -		Checks if the cmd is for logical drive/sysPD
 *				and whether it's RW or non RW
1508
 * @scmd:			SCSI command
1509
 *
1510
 */
1511
inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1512
{
1513 1514
	int ret;

1515 1516 1517 1518 1519 1520 1521 1522 1523
	switch (cmd->cmnd[0]) {
	case READ_10:
	case WRITE_10:
	case READ_12:
	case WRITE_12:
	case READ_6:
	case WRITE_6:
	case READ_16:
	case WRITE_16:
1524 1525 1526
		ret = (MEGASAS_IS_LOGICAL(cmd)) ?
			READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
		break;
1527
	default:
1528 1529
		ret = (MEGASAS_IS_LOGICAL(cmd)) ?
			NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1530
	}
1531
	return ret;
1532 1533
}

1534 1535
 /**
 * megasas_dump_pending_frames -	Dumps the frame address of all pending cmds
1536
 *					in FW
1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549
 * @instance:				Adapter soft state
 */
static inline void
megasas_dump_pending_frames(struct megasas_instance *instance)
{
	struct megasas_cmd *cmd;
	int i,n;
	union megasas_sgl *mfi_sgl;
	struct megasas_io_frame *ldio;
	struct megasas_pthru_frame *pthru;
	u32 sgcount;
	u32 max_cmd = instance->max_fw_cmds;

1550 1551
	dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
	dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1552
	if (IS_DMA64)
1553
		dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1554
	else
1555
		dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1556

1557
	dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1558 1559
	for (i = 0; i < max_cmd; i++) {
		cmd = instance->cmd_list[i];
1560
		if (!cmd->scmd)
1561
			continue;
1562
		dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1563
		if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1564 1565 1566
			ldio = (struct megasas_io_frame *)cmd->frame;
			mfi_sgl = &ldio->sgl;
			sgcount = ldio->sge_count;
1567
			dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1568 1569 1570 1571
			" lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
			instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
			le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
			le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1572
		} else {
1573 1574 1575
			pthru = (struct megasas_pthru_frame *) cmd->frame;
			mfi_sgl = &pthru->sgl;
			sgcount = pthru->sge_count;
1576
			dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1577 1578 1579 1580
			"lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
			instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
			pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
			le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1581
		}
1582 1583 1584 1585 1586 1587 1588 1589 1590 1591
		if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
			for (n = 0; n < sgcount; n++) {
				if (IS_DMA64)
					dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
						le32_to_cpu(mfi_sgl->sge64[n].length),
						le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
				else
					dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
						le32_to_cpu(mfi_sgl->sge32[n].length),
						le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1592 1593 1594
			}
		}
	} /*for max_cmd*/
1595
	dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1596 1597 1598 1599
	for (i = 0; i < max_cmd; i++) {

		cmd = instance->cmd_list[i];

1600
		if (cmd->sync_cmd == 1)
1601
			dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1602
	}
1603
	dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1604 1605
}

1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619
u32
megasas_build_and_issue_cmd(struct megasas_instance *instance,
			    struct scsi_cmnd *scmd)
{
	struct megasas_cmd *cmd;
	u32 frame_count;

	cmd = megasas_get_cmd(instance);
	if (!cmd)
		return SCSI_MLQUEUE_HOST_BUSY;

	/*
	 * Logical drive command
	 */
1620
	if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641
		frame_count = megasas_build_ldio(instance, scmd, cmd);
	else
		frame_count = megasas_build_dcdb(instance, scmd, cmd);

	if (!frame_count)
		goto out_return_cmd;

	cmd->scmd = scmd;
	scmd->SCp.ptr = (char *)cmd;

	/*
	 * Issue the command to the FW
	 */
	atomic_inc(&instance->fw_outstanding);

	instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
				cmd->frame_count-1, instance->reg_set);

	return 0;
out_return_cmd:
	megasas_return_cmd(instance, cmd);
1642
	return SCSI_MLQUEUE_HOST_BUSY;
1643 1644 1645
}


1646 1647 1648 1649 1650 1651
/**
 * megasas_queue_command -	Queue entry point
 * @scmd:			SCSI command to be queued
 * @done:			Callback entry point
 */
static int
1652
megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1653 1654
{
	struct megasas_instance *instance;
1655
	struct MR_PRIV_DEVICE *mr_device_priv_data;
1656 1657 1658

	instance = (struct megasas_instance *)
	    scmd->device->host->hostdata;
1659

1660 1661 1662 1663 1664 1665
	if (instance->unload == 1) {
		scmd->result = DID_NO_CONNECT << 16;
		scmd->scsi_done(scmd);
		return 0;
	}

1666
	if (instance->issuepend_done == 0)
1667 1668
		return SCSI_MLQUEUE_HOST_BUSY;

1669

1670
	/* Check for an mpio path and adjust behavior */
1671
	if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1672 1673 1674 1675 1676
		if (megasas_check_mpio_paths(instance, scmd) ==
		    (DID_RESET << 16)) {
			return SCSI_MLQUEUE_HOST_BUSY;
		} else {
			scmd->result = DID_NO_CONNECT << 16;
1677
			scmd->scsi_done(scmd);
1678 1679 1680 1681
			return 0;
		}
	}

1682
	if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1683
		scmd->result = DID_NO_CONNECT << 16;
1684
		scmd->scsi_done(scmd);
1685 1686 1687
		return 0;
	}

1688 1689 1690 1691 1692 1693 1694
	mr_device_priv_data = scmd->device->hostdata;
	if (!mr_device_priv_data) {
		scmd->result = DID_NO_CONNECT << 16;
		scmd->scsi_done(scmd);
		return 0;
	}

1695
	if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1696 1697
		return SCSI_MLQUEUE_HOST_BUSY;

1698
	if (mr_device_priv_data->tm_busy)
1699 1700
		return SCSI_MLQUEUE_DEVICE_BUSY;

1701

1702 1703
	scmd->result = 0;

1704
	if (MEGASAS_IS_LOGICAL(scmd) &&
1705 1706
	    (scmd->device->id >= instance->fw_supported_vd_count ||
		scmd->device->lun)) {
1707 1708
		scmd->result = DID_BAD_TARGET << 16;
		goto out_done;
1709 1710
	}

1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722
	switch (scmd->cmnd[0]) {
	case SYNCHRONIZE_CACHE:
		/*
		 * FW takes care of flush cache on its own
		 * No need to send it down
		 */
		scmd->result = DID_OK << 16;
		goto out_done;
	default:
		break;
	}

1723
	return instance->instancet->build_and_issue_cmd(instance, scmd);
1724 1725

 out_done:
1726
	scmd->scsi_done(scmd);
1727
	return 0;
1728 1729
}

1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743
static struct megasas_instance *megasas_lookup_instance(u16 host_no)
{
	int i;

	for (i = 0; i < megasas_mgmt_info.max_index; i++) {

		if ((megasas_mgmt_info.instance[i]) &&
		    (megasas_mgmt_info.instance[i]->host->host_no == host_no))
			return megasas_mgmt_info.instance[i];
	}

	return NULL;
}

1744
/*
1745
* megasas_update_sdev_properties - Update sdev structure based on controller's FW capabilities
1746 1747 1748 1749 1750
*
* @sdev: OS provided scsi device
*
* Returns void
*/
1751
void megasas_update_sdev_properties(struct scsi_device *sdev)
1752
{
1753
	u16 pd_index = 0;
1754 1755 1756
	u32 device_id, ld;
	struct megasas_instance *instance;
	struct fusion_context *fusion;
1757 1758
	struct MR_PRIV_DEVICE *mr_device_priv_data;
	struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1759 1760 1761 1762 1763
	struct MR_LD_RAID *raid;
	struct MR_DRV_RAID_MAP_ALL *local_map_ptr;

	instance = megasas_lookup_instance(sdev->host->host_no);
	fusion = instance->ctrl_context;
1764
	mr_device_priv_data = sdev->hostdata;
1765 1766 1767 1768

	if (!fusion)
		return;

1769 1770 1771 1772 1773 1774 1775 1776 1777
	if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
		instance->use_seqnum_jbod_fp) {
		pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
			sdev->id;
		pd_sync = (void *)fusion->pd_seq_sync
				[(instance->pd_seq_map_id - 1) & 1];
		mr_device_priv_data->is_tm_capable =
			pd_sync->seq[pd_index].capability.tmCapable;
	} else {
1778 1779 1780 1781 1782 1783 1784
		device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
					+ sdev->id;
		local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
		ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
		raid = MR_LdRaidGet(ld, local_map_ptr);

		if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1785 1786 1787
		blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
		mr_device_priv_data->is_tm_capable =
			raid->capability.tmCapable;
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 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828
static void megasas_set_device_queue_depth(struct scsi_device *sdev)
{
	u16				pd_index = 0;
	int		ret = DCMD_FAILED;
	struct megasas_instance *instance;

	instance = megasas_lookup_instance(sdev->host->host_no);

	if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
		pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;

		if (instance->pd_info) {
			mutex_lock(&instance->hba_mutex);
			ret = megasas_get_pd_info(instance, pd_index);
			mutex_unlock(&instance->hba_mutex);
		}

		if (ret != DCMD_SUCCESS)
			return;

		if (instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) {

			switch (instance->pd_list[pd_index].interface) {
			case SAS_PD:
				scsi_change_queue_depth(sdev, MEGASAS_SAS_QD);
				break;

			case SATA_PD:
				scsi_change_queue_depth(sdev, MEGASAS_SATA_QD);
				break;

			default:
				scsi_change_queue_depth(sdev, MEGASAS_DEFAULT_PD_QD);
			}
		}
	}
}

1829

1830 1831
static int megasas_slave_configure(struct scsi_device *sdev)
{
1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845
	u16 pd_index = 0;
	struct megasas_instance *instance;

	instance = megasas_lookup_instance(sdev->host->host_no);
	if (instance->allow_fw_scan) {
		if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
			sdev->type == TYPE_DISK) {
			pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
				sdev->id;
			if (instance->pd_list[pd_index].driveState !=
				MR_PD_STATE_SYSTEM)
				return -ENXIO;
		}
	}
1846
	megasas_set_device_queue_depth(sdev);
1847 1848
	megasas_update_sdev_properties(sdev);

1849
	/*
1850 1851
	 * The RAID firmware may require extended timeouts.
	 */
1852 1853
	blk_queue_rq_timeout(sdev->request_queue,
		MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1854

1855 1856 1857 1858 1859
	return 0;
}

static int megasas_slave_alloc(struct scsi_device *sdev)
{
1860
	u16 pd_index = 0;
1861
	struct megasas_instance *instance ;
1862
	struct MR_PRIV_DEVICE *mr_device_priv_data;
1863

1864
	instance = megasas_lookup_instance(sdev->host->host_no);
1865
	if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
1866 1867 1868 1869 1870 1871
		/*
		 * Open the OS scan to the SYSTEM PD
		 */
		pd_index =
			(sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
			sdev->id;
1872 1873
		if ((instance->allow_fw_scan || instance->pd_list[pd_index].driveState ==
			MR_PD_STATE_SYSTEM)) {
1874
			goto scan_target;
1875 1876 1877
		}
		return -ENXIO;
	}
1878 1879 1880 1881 1882 1883 1884

scan_target:
	mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
					GFP_KERNEL);
	if (!mr_device_priv_data)
		return -ENOMEM;
	sdev->hostdata = mr_device_priv_data;
1885 1886 1887
	return 0;
}

1888 1889 1890 1891 1892 1893
static void megasas_slave_destroy(struct scsi_device *sdev)
{
	kfree(sdev->hostdata);
	sdev->hostdata = NULL;
}

1894 1895 1896 1897 1898 1899
/*
* megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
*                                       kill adapter
* @instance:				Adapter soft state
*
*/
1900
static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929
{
	int i;
	struct megasas_cmd *cmd_mfi;
	struct megasas_cmd_fusion *cmd_fusion;
	struct fusion_context *fusion = instance->ctrl_context;

	/* Find all outstanding ioctls */
	if (fusion) {
		for (i = 0; i < instance->max_fw_cmds; i++) {
			cmd_fusion = fusion->cmd_list[i];
			if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
				cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
				if (cmd_mfi->sync_cmd &&
					cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)
					megasas_complete_cmd(instance,
							     cmd_mfi, DID_OK);
			}
		}
	} else {
		for (i = 0; i < instance->max_fw_cmds; i++) {
			cmd_mfi = instance->cmd_list[i];
			if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
				MFI_CMD_ABORT)
				megasas_complete_cmd(instance, cmd_mfi, DID_OK);
		}
	}
}


1930
void megaraid_sas_kill_hba(struct megasas_instance *instance)
1931
{
1932
	/* Set critical error to block I/O & ioctls in case caller didn't */
1933
	atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
1934 1935
	/* Wait 1 second to ensure IO or ioctls in build have posted */
	msleep(1000);
1936
	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1937
		(instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1938
		(instance->ctrl_context)) {
1939
		writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
1940 1941 1942 1943
		/* Flush */
		readl(&instance->reg_set->doorbell);
		if (instance->mpio && instance->requestorId)
			memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
1944
	} else {
1945 1946
		writel(MFI_STOP_ADP,
			&instance->reg_set->inbound_doorbell);
1947
	}
1948 1949
	/* Complete outstanding ioctls when adapter is killed */
	megasas_complete_outstanding_ioctls(instance);
1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961
}

 /**
  * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
  *					restored to max value
  * @instance:			Adapter soft state
  *
  */
void
megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
{
	unsigned long flags;
1962

1963
	if (instance->flag & MEGASAS_FW_BUSY
1964 1965 1966
	    && time_after(jiffies, instance->last_time + 5 * HZ)
	    && atomic_read(&instance->fw_outstanding) <
	    instance->throttlequeuedepth + 1) {
1967 1968 1969 1970

		spin_lock_irqsave(instance->host->host_lock, flags);
		instance->flag &= ~MEGASAS_FW_BUSY;

1971
		instance->host->can_queue = instance->cur_can_queue;
1972
		spin_unlock_irqrestore(instance->host->host_lock, flags);
1973 1974 1975
	}
}

1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992
/**
 * megasas_complete_cmd_dpc	 -	Returns FW's controller structure
 * @instance_addr:			Address of adapter soft state
 *
 * Tasklet to complete cmds
 */
static void megasas_complete_cmd_dpc(unsigned long instance_addr)
{
	u32 producer;
	u32 consumer;
	u32 context;
	struct megasas_cmd *cmd;
	struct megasas_instance *instance =
				(struct megasas_instance *)instance_addr;
	unsigned long flags;

	/* If we have already declared adapter dead, donot complete cmds */
1993
	if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
1994 1995 1996 1997
		return;

	spin_lock_irqsave(&instance->completion_lock, flags);

1998 1999
	producer = le32_to_cpu(*instance->producer);
	consumer = le32_to_cpu(*instance->consumer);
2000 2001

	while (consumer != producer) {
2002
		context = le32_to_cpu(instance->reply_queue[consumer]);
2003
		if (context >= instance->max_fw_cmds) {
2004
			dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2005 2006 2007
				context);
			BUG();
		}
2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018

		cmd = instance->cmd_list[context];

		megasas_complete_cmd(instance, cmd, DID_OK);

		consumer++;
		if (consumer == (instance->max_fw_cmds + 1)) {
			consumer = 0;
		}
	}

2019
	*instance->consumer = cpu_to_le32(producer);
2020 2021 2022 2023 2024 2025

	spin_unlock_irqrestore(&instance->completion_lock, flags);

	/*
	 * Check if we can restore can_queue
	 */
2026
	megasas_check_and_restore_queue_depth(instance);
2027 2028
}

2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047
/**
 * megasas_start_timer - Initializes a timer object
 * @instance:		Adapter soft state
 * @timer:		timer object to be initialized
 * @fn:			timer function
 * @interval:		time interval between timer function call
 *
 */
void megasas_start_timer(struct megasas_instance *instance,
			struct timer_list *timer,
			void *fn, unsigned long interval)
{
	init_timer(timer);
	timer->expires = jiffies + interval;
	timer->data = (unsigned long)instance;
	timer->function = fn;
	add_timer(timer);
}

2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058
static void
megasas_internal_reset_defer_cmds(struct megasas_instance *instance);

static void
process_fw_state_change_wq(struct work_struct *work);

void megasas_do_ocr(struct megasas_instance *instance)
{
	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
	(instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
	(instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2059
		*instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2060
	}
2061
	instance->instancet->disable_intr(instance);
2062
	atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2063 2064 2065 2066 2067 2068 2069
	instance->issuepend_done = 0;

	atomic_set(&instance->fw_outstanding, 0);
	megasas_internal_reset_defer_cmds(instance);
	process_fw_state_change_wq(&instance->work_init);
}

2070 2071
static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
					    int initial)
2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082
{
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;
	struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
	dma_addr_t new_affiliation_111_h;
	int ld, retval = 0;
	u8 thisVf;

	cmd = megasas_get_cmd(instance);

	if (!cmd) {
2083 2084
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
		       "Failed to get cmd for scsi%d\n",
2085 2086 2087 2088 2089 2090
			instance->host->host_no);
		return -ENOMEM;
	}

	dcmd = &cmd->frame->dcmd;

2091
	if (!instance->vf_affiliation_111) {
2092 2093
		dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
		       "affiliation for scsi%d\n", instance->host->host_no);
2094 2095 2096 2097 2098 2099 2100 2101
		megasas_return_cmd(instance, cmd);
		return -ENOMEM;
	}

	if (initial)
			memset(instance->vf_affiliation_111, 0,
			       sizeof(struct MR_LD_VF_AFFILIATION_111));
	else {
2102 2103 2104 2105 2106
		new_affiliation_111 =
			pci_alloc_consistent(instance->pdev,
					     sizeof(struct MR_LD_VF_AFFILIATION_111),
					     &new_affiliation_111_h);
		if (!new_affiliation_111) {
2107 2108
			dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
			       "memory for new affiliation for scsi%d\n",
2109
			       instance->host->host_no);
2110 2111 2112
			megasas_return_cmd(instance, cmd);
			return -ENOMEM;
		}
2113 2114
		memset(new_affiliation_111, 0,
		       sizeof(struct MR_LD_VF_AFFILIATION_111));
2115 2116 2117 2118 2119
	}

	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);

	dcmd->cmd = MFI_CMD_DCMD;
2120
	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2121
	dcmd->sge_count = 1;
2122
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2123 2124
	dcmd->timeout = 0;
	dcmd->pad_0 = 0;
2125 2126 2127
	dcmd->data_xfer_len =
		cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
	dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2128

2129 2130
	if (initial)
		dcmd->sgl.sge32[0].phys_addr =
2131
			cpu_to_le32(instance->vf_affiliation_111_h);
2132
	else
2133 2134
		dcmd->sgl.sge32[0].phys_addr =
			cpu_to_le32(new_affiliation_111_h);
2135

2136 2137
	dcmd->sgl.sge32[0].length = cpu_to_le32(
		sizeof(struct MR_LD_VF_AFFILIATION_111));
2138

2139
	dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2140 2141
	       "scsi%d\n", instance->host->host_no);

2142
	if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2143 2144
		dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
		       " failed with status 0x%x for scsi%d\n",
2145 2146 2147 2148 2149 2150
		       dcmd->cmd_status, instance->host->host_no);
		retval = 1; /* Do a scan if we couldn't get affiliation */
		goto out;
	}

	if (!initial) {
2151 2152 2153 2154
		thisVf = new_affiliation_111->thisVf;
		for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
			if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
			    new_affiliation_111->map[ld].policy[thisVf]) {
2155 2156
				dev_warn(&instance->pdev->dev, "SR-IOV: "
				       "Got new LD/VF affiliation for scsi%d\n",
2157
				       instance->host->host_no);
2158 2159 2160
				memcpy(instance->vf_affiliation_111,
				       new_affiliation_111,
				       sizeof(struct MR_LD_VF_AFFILIATION_111));
2161 2162 2163
				retval = 1;
				goto out;
			}
2164 2165 2166 2167 2168 2169 2170 2171
	}
out:
	if (new_affiliation_111) {
		pci_free_consistent(instance->pdev,
				    sizeof(struct MR_LD_VF_AFFILIATION_111),
				    new_affiliation_111,
				    new_affiliation_111_h);
	}
2172

2173
	megasas_return_cmd(instance, cmd);
2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191

	return retval;
}

static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
					    int initial)
{
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;
	struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
	struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
	dma_addr_t new_affiliation_h;
	int i, j, retval = 0, found = 0, doscan = 0;
	u8 thisVf;

	cmd = megasas_get_cmd(instance);

	if (!cmd) {
2192 2193
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
		       "Failed to get cmd for scsi%d\n",
2194 2195 2196 2197 2198 2199 2200
		       instance->host->host_no);
		return -ENOMEM;
	}

	dcmd = &cmd->frame->dcmd;

	if (!instance->vf_affiliation) {
2201 2202
		dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
		       "affiliation for scsi%d\n", instance->host->host_no);
2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216
		megasas_return_cmd(instance, cmd);
		return -ENOMEM;
	}

	if (initial)
		memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
		       sizeof(struct MR_LD_VF_AFFILIATION));
	else {
		new_affiliation =
			pci_alloc_consistent(instance->pdev,
					     (MAX_LOGICAL_DRIVES + 1) *
					     sizeof(struct MR_LD_VF_AFFILIATION),
					     &new_affiliation_h);
		if (!new_affiliation) {
2217 2218
			dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
			       "memory for new affiliation for scsi%d\n",
2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229
			       instance->host->host_no);
			megasas_return_cmd(instance, cmd);
			return -ENOMEM;
		}
		memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
		       sizeof(struct MR_LD_VF_AFFILIATION));
	}

	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);

	dcmd->cmd = MFI_CMD_DCMD;
2230
	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2231
	dcmd->sge_count = 1;
2232
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2233 2234
	dcmd->timeout = 0;
	dcmd->pad_0 = 0;
2235 2236 2237
	dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
		sizeof(struct MR_LD_VF_AFFILIATION));
	dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2238 2239

	if (initial)
2240 2241
		dcmd->sgl.sge32[0].phys_addr =
			cpu_to_le32(instance->vf_affiliation_h);
2242
	else
2243 2244
		dcmd->sgl.sge32[0].phys_addr =
			cpu_to_le32(new_affiliation_h);
2245

2246 2247
	dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
		sizeof(struct MR_LD_VF_AFFILIATION));
2248

2249
	dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2250 2251 2252
	       "scsi%d\n", instance->host->host_no);


2253
	if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2254 2255
		dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
		       " failed with status 0x%x for scsi%d\n",
2256 2257 2258 2259 2260 2261 2262
		       dcmd->cmd_status, instance->host->host_no);
		retval = 1; /* Do a scan if we couldn't get affiliation */
		goto out;
	}

	if (!initial) {
		if (!new_affiliation->ldCount) {
2263 2264
			dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
			       "affiliation for passive path for scsi%d\n",
2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283
			       instance->host->host_no);
			retval = 1;
			goto out;
		}
		newmap = new_affiliation->map;
		savedmap = instance->vf_affiliation->map;
		thisVf = new_affiliation->thisVf;
		for (i = 0 ; i < new_affiliation->ldCount; i++) {
			found = 0;
			for (j = 0; j < instance->vf_affiliation->ldCount;
			     j++) {
				if (newmap->ref.targetId ==
				    savedmap->ref.targetId) {
					found = 1;
					if (newmap->policy[thisVf] !=
					    savedmap->policy[thisVf]) {
						doscan = 1;
						goto out;
					}
2284 2285 2286 2287
				}
				savedmap = (struct MR_LD_VF_MAP *)
					((unsigned char *)savedmap +
					 savedmap->size);
2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312
			}
			if (!found && newmap->policy[thisVf] !=
			    MR_LD_ACCESS_HIDDEN) {
				doscan = 1;
				goto out;
			}
			newmap = (struct MR_LD_VF_MAP *)
				((unsigned char *)newmap + newmap->size);
		}

		newmap = new_affiliation->map;
		savedmap = instance->vf_affiliation->map;

		for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
			found = 0;
			for (j = 0 ; j < new_affiliation->ldCount; j++) {
				if (savedmap->ref.targetId ==
				    newmap->ref.targetId) {
					found = 1;
					if (savedmap->policy[thisVf] !=
					    newmap->policy[thisVf]) {
						doscan = 1;
						goto out;
					}
				}
2313 2314 2315 2316
				newmap = (struct MR_LD_VF_MAP *)
					((unsigned char *)newmap +
					 newmap->size);
			}
2317 2318 2319 2320 2321 2322 2323 2324
			if (!found && savedmap->policy[thisVf] !=
			    MR_LD_ACCESS_HIDDEN) {
				doscan = 1;
				goto out;
			}
			savedmap = (struct MR_LD_VF_MAP *)
				((unsigned char *)savedmap +
				 savedmap->size);
2325 2326 2327
		}
	}
out:
2328
	if (doscan) {
2329 2330
		dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
		       "affiliation for scsi%d\n", instance->host->host_no);
2331 2332 2333
		memcpy(instance->vf_affiliation, new_affiliation,
		       new_affiliation->size);
		retval = 1;
2334
	}
2335 2336 2337 2338 2339 2340

	if (new_affiliation)
		pci_free_consistent(instance->pdev,
				    (MAX_LOGICAL_DRIVES + 1) *
				    sizeof(struct MR_LD_VF_AFFILIATION),
				    new_affiliation, new_affiliation_h);
2341
	megasas_return_cmd(instance, cmd);
2342 2343 2344 2345

	return retval;
}

2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358
/* This function will get the current SR-IOV LD/VF affiliation */
static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
	int initial)
{
	int retval;

	if (instance->PlasmaFW111)
		retval = megasas_get_ld_vf_affiliation_111(instance, initial);
	else
		retval = megasas_get_ld_vf_affiliation_12(instance, initial);
	return retval;
}

2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369
/* This function will tell FW to start the SR-IOV heartbeat */
int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
					 int initial)
{
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;
	int retval = 0;

	cmd = megasas_get_cmd(instance);

	if (!cmd) {
2370 2371
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
		       "Failed to get cmd for scsi%d\n",
2372 2373 2374 2375 2376 2377 2378 2379
		       instance->host->host_no);
		return -ENOMEM;
	}

	dcmd = &cmd->frame->dcmd;

	if (initial) {
		instance->hb_host_mem =
J
Joe Perches 已提交
2380 2381 2382
			pci_zalloc_consistent(instance->pdev,
					      sizeof(struct MR_CTRL_HB_HOST_MEM),
					      &instance->hb_host_mem_h);
2383
		if (!instance->hb_host_mem) {
2384 2385 2386
			dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
			       " memory for heartbeat host memory for scsi%d\n",
			       instance->host->host_no);
2387 2388 2389 2390 2391 2392 2393
			retval = -ENOMEM;
			goto out;
		}
	}

	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);

2394
	dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2395
	dcmd->cmd = MFI_CMD_DCMD;
2396
	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2397
	dcmd->sge_count = 1;
2398
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2399 2400
	dcmd->timeout = 0;
	dcmd->pad_0 = 0;
2401 2402 2403 2404
	dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
	dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->hb_host_mem_h);
	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2405

2406
	dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2407 2408
	       instance->host->host_no);

2409 2410 2411 2412 2413
	if (instance->ctrl_context && !instance->mask_interrupts)
		retval = megasas_issue_blocked_cmd(instance, cmd,
			MEGASAS_ROUTINE_WAIT_TIME_VF);
	else
		retval = megasas_issue_polled(instance, cmd);
2414

2415
	if (retval) {
2416 2417 2418 2419
		dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
			"_MEM_ALLOC DCMD %s for scsi%d\n",
			(dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
			"timed out" : "failed", instance->host->host_no);
2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441
		retval = 1;
	}

out:
	megasas_return_cmd(instance, cmd);

	return retval;
}

/* Handler for SR-IOV heartbeat */
void megasas_sriov_heartbeat_handler(unsigned long instance_addr)
{
	struct megasas_instance *instance =
		(struct megasas_instance *)instance_addr;

	if (instance->hb_host_mem->HB.fwCounter !=
	    instance->hb_host_mem->HB.driverCounter) {
		instance->hb_host_mem->HB.driverCounter =
			instance->hb_host_mem->HB.fwCounter;
		mod_timer(&instance->sriov_heartbeat_timer,
			  jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
	} else {
2442
		dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2443 2444 2445 2446 2447
		       "completed for scsi%d\n", instance->host->host_no);
		schedule_work(&instance->work_init);
	}
}

2448 2449 2450 2451
/**
 * megasas_wait_for_outstanding -	Wait for all outstanding cmds
 * @instance:				Adapter soft state
 *
L
Lucas De Marchi 已提交
2452
 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2453 2454 2455 2456 2457
 * complete all its outstanding commands. Returns error if one or more IOs
 * are pending after this time period. It also marks the controller dead.
 */
static int megasas_wait_for_outstanding(struct megasas_instance *instance)
{
2458
	int i, sl, outstanding;
2459
	u32 reset_index;
2460
	u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2461 2462 2463
	unsigned long flags;
	struct list_head clist_local;
	struct megasas_cmd *reset_cmd;
2464
	u32 fw_state;
2465

2466 2467 2468 2469 2470
	if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
		dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
		__func__, __LINE__);
		return FAILED;
	}
2471

2472
	if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2473 2474 2475 2476 2477 2478 2479

		INIT_LIST_HEAD(&clist_local);
		spin_lock_irqsave(&instance->hba_lock, flags);
		list_splice_init(&instance->internal_reset_pending_q,
				&clist_local);
		spin_unlock_irqrestore(&instance->hba_lock, flags);

2480
		dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2481 2482
		for (i = 0; i < wait_time; i++) {
			msleep(1000);
2483
			if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2484 2485 2486
				break;
		}

2487
		if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2488
			dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2489
			atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2490 2491 2492
			return FAILED;
		}

2493
		reset_index = 0;
2494
		while (!list_empty(&clist_local)) {
2495
			reset_cmd = list_entry((&clist_local)->next,
2496 2497 2498 2499
						struct megasas_cmd, list);
			list_del_init(&reset_cmd->list);
			if (reset_cmd->scmd) {
				reset_cmd->scmd->result = DID_RESET << 16;
2500
				dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2501
					reset_index, reset_cmd,
2502
					reset_cmd->scmd->cmnd[0]);
2503 2504 2505 2506

				reset_cmd->scmd->scsi_done(reset_cmd->scmd);
				megasas_return_cmd(instance, reset_cmd);
			} else if (reset_cmd->sync_cmd) {
2507
				dev_notice(&instance->pdev->dev, "%p synch cmds"
2508 2509 2510
						"reset queue\n",
						reset_cmd);

2511
				reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
2512 2513 2514 2515
				instance->instancet->fire_cmd(instance,
						reset_cmd->frame_phys_addr,
						0, instance->reg_set);
			} else {
2516
				dev_notice(&instance->pdev->dev, "%p unexpected"
2517 2518 2519 2520 2521 2522 2523 2524
					"cmds lst\n",
					reset_cmd);
			}
			reset_index++;
		}

		return SUCCESS;
	}
2525

2526
	for (i = 0; i < resetwaittime; i++) {
2527
		outstanding = atomic_read(&instance->fw_outstanding);
2528 2529

		if (!outstanding)
2530 2531 2532
			break;

		if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2533
			dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2534
			       "commands to complete\n",i,outstanding);
2535 2536 2537 2538 2539
			/*
			 * Call cmd completion routine. Cmd to be
			 * be completed directly without depending on isr.
			 */
			megasas_complete_cmd_dpc((unsigned long)instance);
2540 2541 2542 2543 2544
		}

		msleep(1000);
	}

2545
	i = 0;
2546 2547 2548 2549 2550 2551 2552 2553
	outstanding = atomic_read(&instance->fw_outstanding);
	fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;

	if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
		goto no_outstanding;

	if (instance->disableOnlineCtrlReset)
		goto kill_hba_and_failed;
2554
	do {
2555 2556 2557 2558 2559 2560
		if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
			dev_info(&instance->pdev->dev,
				"%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, oustanding 0x%x\n",
				__func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
			if (i == 3)
				goto kill_hba_and_failed;
2561 2562
			megasas_do_ocr(instance);

2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578
			if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
				dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
				__func__, __LINE__);
				return FAILED;
			}
			dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
				__func__, __LINE__);

			for (sl = 0; sl < 10; sl++)
				msleep(500);

			outstanding = atomic_read(&instance->fw_outstanding);

			fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
			if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
				goto no_outstanding;
2579 2580 2581 2582
		}
		i++;
	} while (i <= 3);

2583
no_outstanding:
2584

2585 2586 2587
	dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
		__func__, __LINE__);
	return SUCCESS;
2588

2589
kill_hba_and_failed:
2590

2591 2592 2593 2594 2595 2596 2597
	/* Reset not supported, kill adapter */
	dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
		" disableOnlineCtrlReset %d fw_outstanding %d \n",
		__func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
		atomic_read(&instance->fw_outstanding));
	megasas_dump_pending_frames(instance);
	megaraid_sas_kill_hba(instance);
2598

2599
	return FAILED;
2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616
}

/**
 * megasas_generic_reset -	Generic reset routine
 * @scmd:			Mid-layer SCSI command
 *
 * This routine implements a generic reset handler for device, bus and host
 * reset requests. Device, bus and host specific reset handlers can use this
 * function after they do their specific tasks.
 */
static int megasas_generic_reset(struct scsi_cmnd *scmd)
{
	int ret_val;
	struct megasas_instance *instance;

	instance = (struct megasas_instance *)scmd->device->host->hostdata;

2617 2618
	scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
		 scmd->cmnd[0], scmd->retries);
2619

2620
	if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2621
		dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2622 2623 2624 2625 2626
		return FAILED;
	}

	ret_val = megasas_wait_for_outstanding(instance);
	if (ret_val == SUCCESS)
2627
		dev_notice(&instance->pdev->dev, "reset successful\n");
2628
	else
2629
		dev_err(&instance->pdev->dev, "failed to do reset\n");
2630 2631 2632 2633

	return ret_val;
}

2634 2635 2636 2637 2638 2639 2640 2641
/**
 * megasas_reset_timer - quiesce the adapter if required
 * @scmd:		scsi cmnd
 *
 * Sets the FW busy flag and reduces the host->can_queue if the
 * cmd has not been completed within the timeout period.
 */
static enum
J
Jens Axboe 已提交
2642
blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2643 2644 2645 2646 2647 2648
{
	struct megasas_instance *instance;
	unsigned long flags;

	if (time_after(jiffies, scmd->jiffies_at_alloc +
				(MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
J
Jens Axboe 已提交
2649
		return BLK_EH_NOT_HANDLED;
2650 2651
	}

2652
	instance = (struct megasas_instance *)scmd->device->host->hostdata;
2653 2654 2655 2656
	if (!(instance->flag & MEGASAS_FW_BUSY)) {
		/* FW is busy, throttle IO */
		spin_lock_irqsave(instance->host->host_lock, flags);

2657
		instance->host->can_queue = instance->throttlequeuedepth;
2658 2659 2660 2661 2662
		instance->last_time = jiffies;
		instance->flag |= MEGASAS_FW_BUSY;

		spin_unlock_irqrestore(instance->host->host_lock, flags);
	}
J
Jens Axboe 已提交
2663
	return BLK_EH_RESET_TIMER;
2664 2665
}

2666 2667 2668 2669 2670 2671 2672 2673
/**
 * megasas_reset_device -	Device reset handler entry point
 */
static int megasas_reset_device(struct scsi_cmnd *scmd)
{
	/*
	 * First wait for all commands to complete
	 */
2674
	return megasas_generic_reset(scmd);
2675 2676 2677 2678 2679 2680 2681 2682
}

/**
 * megasas_reset_bus_host -	Bus & host reset handler entry point
 */
static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
{
	int ret;
2683
	struct megasas_instance *instance;
2684

2685
	instance = (struct megasas_instance *)scmd->device->host->hostdata;
2686 2687

	/*
U
Uwe Zeisberger 已提交
2688
	 * First wait for all commands to complete
2689
	 */
2690
	if (instance->ctrl_context)
2691
		ret = megasas_reset_fusion(scmd->device->host, 1);
2692 2693
	else
		ret = megasas_generic_reset(scmd);
2694 2695 2696 2697

	return ret;
}

2698 2699
/**
 * megasas_bios_param - Returns disk geometry for a disk
2700
 * @sdev:		device handle
2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712
 * @bdev:		block device
 * @capacity:		drive capacity
 * @geom:		geometry parameters
 */
static int
megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
		 sector_t capacity, int geom[])
{
	int heads;
	int sectors;
	sector_t cylinders;
	unsigned long tmp;
2713

2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741
	/* Default heads (64) & sectors (32) */
	heads = 64;
	sectors = 32;

	tmp = heads * sectors;
	cylinders = capacity;

	sector_div(cylinders, tmp);

	/*
	 * Handle extended translation size for logical drives > 1Gb
	 */

	if (capacity >= 0x200000) {
		heads = 255;
		sectors = 63;
		tmp = heads*sectors;
		cylinders = capacity;
		sector_div(cylinders, tmp);
	}

	geom[0] = heads;
	geom[1] = sectors;
	geom[2] = cylinders;

	return 0;
}

2742 2743
static void megasas_aen_polling(struct work_struct *work);

2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758
/**
 * megasas_service_aen -	Processes an event notification
 * @instance:			Adapter soft state
 * @cmd:			AEN command completed by the ISR
 *
 * For AEN, driver sends a command down to FW that is held by the FW till an
 * event occurs. When an event of interest occurs, FW completes the command
 * that it was previously holding.
 *
 * This routines sends SIGIO signal to processes that have registered with the
 * driver for AEN.
 */
static void
megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
{
2759
	unsigned long flags;
2760

2761 2762 2763
	/*
	 * Don't signal app if it is just an aborted previously registered aen
	 */
2764 2765 2766 2767 2768
	if ((!cmd->abort_aen) && (instance->unload == 0)) {
		spin_lock_irqsave(&poll_aen_lock, flags);
		megasas_poll_wait_aen = 1;
		spin_unlock_irqrestore(&poll_aen_lock, flags);
		wake_up(&megasas_poll_wait);
2769
		kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2770
	}
2771 2772 2773 2774
	else
		cmd->abort_aen = 0;

	instance->aen_cmd = NULL;
2775

2776
	megasas_return_cmd(instance, cmd);
2777

2778 2779
	if ((instance->unload == 0) &&
		((instance->issuepend_done == 1))) {
2780
		struct megasas_aen_event *ev;
2781

2782 2783
		ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
		if (!ev) {
2784
			dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
2785 2786 2787
		} else {
			ev->instance = instance;
			instance->ev = ev;
2788 2789 2790
			INIT_DELAYED_WORK(&ev->hotplug_work,
					  megasas_aen_polling);
			schedule_delayed_work(&ev->hotplug_work, 0);
2791 2792
		}
	}
2793 2794
}

2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840
static ssize_t
megasas_fw_crash_buffer_store(struct device *cdev,
	struct device_attribute *attr, const char *buf, size_t count)
{
	struct Scsi_Host *shost = class_to_shost(cdev);
	struct megasas_instance *instance =
		(struct megasas_instance *) shost->hostdata;
	int val = 0;
	unsigned long flags;

	if (kstrtoint(buf, 0, &val) != 0)
		return -EINVAL;

	spin_lock_irqsave(&instance->crashdump_lock, flags);
	instance->fw_crash_buffer_offset = val;
	spin_unlock_irqrestore(&instance->crashdump_lock, flags);
	return strlen(buf);
}

static ssize_t
megasas_fw_crash_buffer_show(struct device *cdev,
	struct device_attribute *attr, char *buf)
{
	struct Scsi_Host *shost = class_to_shost(cdev);
	struct megasas_instance *instance =
		(struct megasas_instance *) shost->hostdata;
	u32 size;
	unsigned long buff_addr;
	unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
	unsigned long src_addr;
	unsigned long flags;
	u32 buff_offset;

	spin_lock_irqsave(&instance->crashdump_lock, flags);
	buff_offset = instance->fw_crash_buffer_offset;
	if (!instance->crash_dump_buf &&
		!((instance->fw_crash_state == AVAILABLE) ||
		(instance->fw_crash_state == COPYING))) {
		dev_err(&instance->pdev->dev,
			"Firmware crash dump is not available\n");
		spin_unlock_irqrestore(&instance->crashdump_lock, flags);
		return -EINVAL;
	}

	buff_addr = (unsigned long) buf;

2841
	if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852
		dev_err(&instance->pdev->dev,
			"Firmware crash dump offset is out of range\n");
		spin_unlock_irqrestore(&instance->crashdump_lock, flags);
		return 0;
	}

	size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
	size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;

	src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
		(buff_offset % dmachunk);
2853
	memcpy(buf, (void *)src_addr, size);
2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912
	spin_unlock_irqrestore(&instance->crashdump_lock, flags);

	return size;
}

static ssize_t
megasas_fw_crash_buffer_size_show(struct device *cdev,
	struct device_attribute *attr, char *buf)
{
	struct Scsi_Host *shost = class_to_shost(cdev);
	struct megasas_instance *instance =
		(struct megasas_instance *) shost->hostdata;

	return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
		((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
}

static ssize_t
megasas_fw_crash_state_store(struct device *cdev,
	struct device_attribute *attr, const char *buf, size_t count)
{
	struct Scsi_Host *shost = class_to_shost(cdev);
	struct megasas_instance *instance =
		(struct megasas_instance *) shost->hostdata;
	int val = 0;
	unsigned long flags;

	if (kstrtoint(buf, 0, &val) != 0)
		return -EINVAL;

	if ((val <= AVAILABLE || val > COPY_ERROR)) {
		dev_err(&instance->pdev->dev, "application updates invalid "
			"firmware crash state\n");
		return -EINVAL;
	}

	instance->fw_crash_state = val;

	if ((val == COPIED) || (val == COPY_ERROR)) {
		spin_lock_irqsave(&instance->crashdump_lock, flags);
		megasas_free_host_crash_buffer(instance);
		spin_unlock_irqrestore(&instance->crashdump_lock, flags);
		if (val == COPY_ERROR)
			dev_info(&instance->pdev->dev, "application failed to "
				"copy Firmware crash dump\n");
		else
			dev_info(&instance->pdev->dev, "Firmware crash dump "
				"copied successfully\n");
	}
	return strlen(buf);
}

static ssize_t
megasas_fw_crash_state_show(struct device *cdev,
	struct device_attribute *attr, char *buf)
{
	struct Scsi_Host *shost = class_to_shost(cdev);
	struct megasas_instance *instance =
		(struct megasas_instance *) shost->hostdata;
2913

2914 2915 2916 2917 2918 2919 2920 2921 2922 2923
	return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
}

static ssize_t
megasas_page_size_show(struct device *cdev,
	struct device_attribute *attr, char *buf)
{
	return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
}

2924 2925 2926 2927 2928 2929 2930 2931 2932 2933
static ssize_t
megasas_ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
	char *buf)
{
	struct Scsi_Host *shost = class_to_shost(cdev);
	struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;

	return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
}

2934 2935 2936 2937 2938 2939 2940 2941
static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
	megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
	megasas_fw_crash_buffer_size_show, NULL);
static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
	megasas_fw_crash_state_show, megasas_fw_crash_state_store);
static DEVICE_ATTR(page_size, S_IRUGO,
	megasas_page_size_show, NULL);
2942 2943
static DEVICE_ATTR(ldio_outstanding, S_IRUGO,
	megasas_ldio_outstanding_show, NULL);
2944 2945 2946 2947 2948 2949

struct device_attribute *megaraid_host_attrs[] = {
	&dev_attr_fw_crash_buffer_size,
	&dev_attr_fw_crash_buffer,
	&dev_attr_fw_crash_state,
	&dev_attr_page_size,
2950
	&dev_attr_ldio_outstanding,
2951 2952 2953
	NULL,
};

2954 2955 2956 2957 2958 2959
/*
 * Scsi host template for megaraid_sas driver
 */
static struct scsi_host_template megasas_template = {

	.module = THIS_MODULE,
2960
	.name = "Avago SAS based MegaRAID driver",
2961
	.proc_name = "megaraid_sas",
2962
	.slave_configure = megasas_slave_configure,
2963
	.slave_alloc = megasas_slave_alloc,
2964
	.slave_destroy = megasas_slave_destroy,
2965 2966 2967 2968
	.queuecommand = megasas_queue_command,
	.eh_device_reset_handler = megasas_reset_device,
	.eh_bus_reset_handler = megasas_reset_bus_host,
	.eh_host_reset_handler = megasas_reset_bus_host,
2969
	.eh_timed_out = megasas_reset_timer,
2970
	.shost_attrs = megaraid_host_attrs,
2971
	.bios_param = megasas_bios_param,
2972
	.use_clustering = ENABLE_CLUSTERING,
2973
	.change_queue_depth = scsi_change_queue_depth,
2974
	.no_write_same = 1,
2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989
};

/**
 * megasas_complete_int_cmd -	Completes an internal command
 * @instance:			Adapter soft state
 * @cmd:			Command to be completed
 *
 * The megasas_issue_blocked_cmd() function waits for a command to complete
 * after it issues a command. This function wakes up that waiting routine by
 * calling wake_up() on the wait queue.
 */
static void
megasas_complete_int_cmd(struct megasas_instance *instance,
			 struct megasas_cmd *cmd)
{
2990
	cmd->cmd_status_drv = cmd->frame->io.cmd_status;
2991 2992 2993 2994 2995 2996 2997 2998
	wake_up(&instance->int_cmd_wait_q);
}

/**
 * megasas_complete_abort -	Completes aborting a command
 * @instance:			Adapter soft state
 * @cmd:			Cmd that was issued to abort another cmd
 *
2999 3000
 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
 * after it issues an abort on a previously issued command. This function
3001 3002 3003 3004 3005 3006 3007 3008
 * wakes up all functions waiting on the same wait queue.
 */
static void
megasas_complete_abort(struct megasas_instance *instance,
		       struct megasas_cmd *cmd)
{
	if (cmd->sync_cmd) {
		cmd->sync_cmd = 0;
3009
		cmd->cmd_status_drv = 0;
3010 3011 3012 3013 3014 3015 3016 3017
		wake_up(&instance->abort_cmd_wait_q);
	}
}

/**
 * megasas_complete_cmd -	Completes a command
 * @instance:			Adapter soft state
 * @cmd:			Command to be completed
3018
 * @alt_status:			If non-zero, use this value as status to
3019 3020 3021 3022
 *				SCSI mid-layer instead of the value returned
 *				by the FW. This should be used if caller wants
 *				an alternate status (as in the case of aborted
 *				commands)
3023
 */
3024
void
3025 3026 3027 3028 3029
megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
		     u8 alt_status)
{
	int exception = 0;
	struct megasas_header *hdr = &cmd->frame->hdr;
3030
	unsigned long flags;
3031
	struct fusion_context *fusion = instance->ctrl_context;
3032
	u32 opcode, status;
3033

3034 3035 3036
	/* flag for the retry reset */
	cmd->retry_for_fw_reset = 0;

3037 3038
	if (cmd->scmd)
		cmd->scmd->SCp.ptr = NULL;
3039 3040

	switch (hdr->cmd) {
3041 3042 3043 3044 3045
	case MFI_CMD_INVALID:
		/* Some older 1068 controller FW may keep a pended
		   MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
		   when booting the kdump kernel.  Ignore this command to
		   prevent a kernel panic on shutdown of the kdump kernel. */
3046 3047 3048 3049
		dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
		       "completed\n");
		dev_warn(&instance->pdev->dev, "If you have a controller "
		       "other than PERC5, please upgrade your firmware\n");
3050
		break;
3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074
	case MFI_CMD_PD_SCSI_IO:
	case MFI_CMD_LD_SCSI_IO:

		/*
		 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
		 * issued either through an IO path or an IOCTL path. If it
		 * was via IOCTL, we will send it to internal completion.
		 */
		if (cmd->sync_cmd) {
			cmd->sync_cmd = 0;
			megasas_complete_int_cmd(instance, cmd);
			break;
		}

	case MFI_CMD_LD_READ:
	case MFI_CMD_LD_WRITE:

		if (alt_status) {
			cmd->scmd->result = alt_status << 16;
			exception = 1;
		}

		if (exception) {

3075
			atomic_dec(&instance->fw_outstanding);
3076

3077
			scsi_dma_unmap(cmd->scmd);
3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116
			cmd->scmd->scsi_done(cmd->scmd);
			megasas_return_cmd(instance, cmd);

			break;
		}

		switch (hdr->cmd_status) {

		case MFI_STAT_OK:
			cmd->scmd->result = DID_OK << 16;
			break;

		case MFI_STAT_SCSI_IO_FAILED:
		case MFI_STAT_LD_INIT_IN_PROGRESS:
			cmd->scmd->result =
			    (DID_ERROR << 16) | hdr->scsi_status;
			break;

		case MFI_STAT_SCSI_DONE_WITH_ERROR:

			cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;

			if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
				memset(cmd->scmd->sense_buffer, 0,
				       SCSI_SENSE_BUFFERSIZE);
				memcpy(cmd->scmd->sense_buffer, cmd->sense,
				       hdr->sense_len);

				cmd->scmd->result |= DRIVER_SENSE << 24;
			}

			break;

		case MFI_STAT_LD_OFFLINE:
		case MFI_STAT_DEVICE_NOT_FOUND:
			cmd->scmd->result = DID_BAD_TARGET << 16;
			break;

		default:
3117
			dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3118 3119 3120 3121 3122
			       hdr->cmd_status);
			cmd->scmd->result = DID_ERROR << 16;
			break;
		}

3123
		atomic_dec(&instance->fw_outstanding);
3124

3125
		scsi_dma_unmap(cmd->scmd);
3126 3127 3128 3129 3130 3131 3132 3133
		cmd->scmd->scsi_done(cmd->scmd);
		megasas_return_cmd(instance, cmd);

		break;

	case MFI_CMD_SMP:
	case MFI_CMD_STP:
	case MFI_CMD_DCMD:
3134
		opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3135
		/* Check for LD map update */
3136 3137
		if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
			&& (cmd->frame->dcmd.mbox.b[1] == 1)) {
3138
			fusion->fast_path_io = 0;
3139
			spin_lock_irqsave(instance->host->host_lock, flags);
3140
			instance->map_update_cmd = NULL;
3141 3142 3143
			if (cmd->frame->hdr.cmd_status != 0) {
				if (cmd->frame->hdr.cmd_status !=
				    MFI_STAT_NOT_FOUND)
3144
					dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3145 3146
					       cmd->frame->hdr.cmd_status);
				else {
3147
					megasas_return_cmd(instance, cmd);
3148 3149 3150 3151 3152 3153 3154
					spin_unlock_irqrestore(
						instance->host->host_lock,
						flags);
					break;
				}
			} else
				instance->map_id++;
3155
			megasas_return_cmd(instance, cmd);
3156 3157 3158 3159 3160 3161 3162

			/*
			 * Set fast path IO to ZERO.
			 * Validate Map will set proper value.
			 * Meanwhile all IOs will go as LD IO.
			 */
			if (MR_ValidateMapInfo(instance))
3163 3164 3165 3166 3167 3168 3169 3170
				fusion->fast_path_io = 1;
			else
				fusion->fast_path_io = 0;
			megasas_sync_map_info(instance);
			spin_unlock_irqrestore(instance->host->host_lock,
					       flags);
			break;
		}
3171 3172
		if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
		    opcode == MR_DCMD_CTRL_EVENT_GET) {
3173 3174 3175 3176
			spin_lock_irqsave(&poll_aen_lock, flags);
			megasas_poll_wait_aen = 0;
			spin_unlock_irqrestore(&poll_aen_lock, flags);
		}
3177

3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198
		/* FW has an updated PD sequence */
		if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
			(cmd->frame->dcmd.mbox.b[0] == 1)) {

			spin_lock_irqsave(instance->host->host_lock, flags);
			status = cmd->frame->hdr.cmd_status;
			instance->jbod_seq_cmd = NULL;
			megasas_return_cmd(instance, cmd);

			if (status == MFI_STAT_OK) {
				instance->pd_seq_map_id++;
				/* Re-register a pd sync seq num cmd */
				if (megasas_sync_pd_seq_num(instance, true))
					instance->use_seqnum_jbod_fp = false;
			} else
				instance->use_seqnum_jbod_fp = false;

			spin_unlock_irqrestore(instance->host->host_lock, flags);
			break;
		}

3199 3200 3201
		/*
		 * See if got an event notification
		 */
3202
		if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216
			megasas_service_aen(instance, cmd);
		else
			megasas_complete_int_cmd(instance, cmd);

		break;

	case MFI_CMD_ABORT:
		/*
		 * Cmd issued to abort another cmd returned
		 */
		megasas_complete_abort(instance, cmd);
		break;

	default:
3217
		dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3218 3219 3220 3221 3222
		       hdr->cmd);
		break;
	}
}

3223 3224
/**
 * megasas_issue_pending_cmds_again -	issue all pending cmds
3225
 *					in FW again because of the fw reset
3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242
 * @instance:				Adapter soft state
 */
static inline void
megasas_issue_pending_cmds_again(struct megasas_instance *instance)
{
	struct megasas_cmd *cmd;
	struct list_head clist_local;
	union megasas_evt_class_locale class_locale;
	unsigned long flags;
	u32 seq_num;

	INIT_LIST_HEAD(&clist_local);
	spin_lock_irqsave(&instance->hba_lock, flags);
	list_splice_init(&instance->internal_reset_pending_q, &clist_local);
	spin_unlock_irqrestore(&instance->hba_lock, flags);

	while (!list_empty(&clist_local)) {
3243
		cmd = list_entry((&clist_local)->next,
3244 3245 3246 3247
					struct megasas_cmd, list);
		list_del_init(&cmd->list);

		if (cmd->sync_cmd || cmd->scmd) {
3248 3249
			dev_notice(&instance->pdev->dev, "command %p, %p:%d"
				"detected to be pending while HBA reset\n",
3250 3251 3252 3253 3254
					cmd, cmd->scmd, cmd->sync_cmd);

			cmd->retry_for_fw_reset++;

			if (cmd->retry_for_fw_reset == 3) {
3255
				dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3256 3257 3258
					"was tried multiple times during reset."
					"Shutting down the HBA\n",
					cmd, cmd->scmd, cmd->sync_cmd);
3259 3260
				instance->instancet->disable_intr(instance);
				atomic_set(&instance->fw_reset_no_pci_access, 1);
3261 3262 3263 3264 3265 3266 3267
				megaraid_sas_kill_hba(instance);
				return;
			}
		}

		if (cmd->sync_cmd == 1) {
			if (cmd->scmd) {
3268
				dev_notice(&instance->pdev->dev, "unexpected"
3269 3270
					"cmd attached to internal command!\n");
			}
3271
			dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3272 3273
						"on the internal reset queue,"
						"issue it again.\n", cmd);
3274
			cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
3275
			instance->instancet->fire_cmd(instance,
3276
							cmd->frame_phys_addr,
3277 3278
							0, instance->reg_set);
		} else if (cmd->scmd) {
3279
			dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3280
			"detected on the internal queue, issue again.\n",
3281
			cmd, cmd->scmd->cmnd[0]);
3282 3283 3284 3285 3286 3287

			atomic_inc(&instance->fw_outstanding);
			instance->instancet->fire_cmd(instance,
					cmd->frame_phys_addr,
					cmd->frame_count-1, instance->reg_set);
		} else {
3288
			dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3289 3290 3291 3292 3293 3294
				"internal reset defer list while re-issue!!\n",
				cmd);
		}
	}

	if (instance->aen_cmd) {
3295
		dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3296 3297
		megasas_return_cmd(instance, instance->aen_cmd);

3298
		instance->aen_cmd = NULL;
3299 3300 3301
	}

	/*
3302 3303
	 * Initiate AEN (Asynchronous Event Notification)
	 */
3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329
	seq_num = instance->last_seq_num;
	class_locale.members.reserved = 0;
	class_locale.members.locale = MR_EVT_LOCALE_ALL;
	class_locale.members.class = MR_EVT_CLASS_DEBUG;

	megasas_register_aen(instance, seq_num, class_locale.word);
}

/**
 * Move the internal reset pending commands to a deferred queue.
 *
 * We move the commands pending at internal reset time to a
 * pending queue. This queue would be flushed after successful
 * completion of the internal reset sequence. if the internal reset
 * did not complete in time, the kernel reset handler would flush
 * these commands.
 **/
static void
megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
{
	struct megasas_cmd *cmd;
	int i;
	u32 max_cmd = instance->max_fw_cmds;
	u32 defer_index;
	unsigned long flags;

3330
	defer_index = 0;
3331
	spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3332 3333 3334
	for (i = 0; i < max_cmd; i++) {
		cmd = instance->cmd_list[i];
		if (cmd->sync_cmd == 1 || cmd->scmd) {
3335
			dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3336 3337 3338 3339
					"on the defer queue as internal\n",
				defer_index, cmd, cmd->sync_cmd, cmd->scmd);

			if (!list_empty(&cmd->list)) {
3340
				dev_notice(&instance->pdev->dev, "ERROR while"
3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351
					" moving this cmd:%p, %d %p, it was"
					"discovered on some list?\n",
					cmd, cmd->sync_cmd, cmd->scmd);

				list_del_init(&cmd->list);
			}
			defer_index++;
			list_add_tail(&cmd->list,
				&instance->internal_reset_pending_q);
		}
	}
3352
	spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363
}


static void
process_fw_state_change_wq(struct work_struct *work)
{
	struct megasas_instance *instance =
		container_of(work, struct megasas_instance, work_init);
	u32 wait;
	unsigned long flags;

3364
    if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3365
		dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3366
				atomic_read(&instance->adprecovery));
3367 3368 3369
		return ;
	}

3370
	if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3371
		dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3372 3373
					"state, restarting it...\n");

3374
		instance->instancet->disable_intr(instance);
3375 3376 3377 3378
		atomic_set(&instance->fw_outstanding, 0);

		atomic_set(&instance->fw_reset_no_pci_access, 1);
		instance->instancet->adp_reset(instance, instance->reg_set);
3379
		atomic_set(&instance->fw_reset_no_pci_access, 0);
3380

3381
		dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3382 3383
					"initiating next stage...\n");

3384
		dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3385 3386
					"state 2 starting...\n");

3387
		/* waiting for about 20 second before start the second init */
3388 3389 3390 3391
		for (wait = 0; wait < 30; wait++) {
			msleep(1000);
		}

3392
		if (megasas_transition_to_ready(instance, 1)) {
3393
			dev_notice(&instance->pdev->dev, "adapter not ready\n");
3394

3395
			atomic_set(&instance->fw_reset_no_pci_access, 1);
3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412
			megaraid_sas_kill_hba(instance);
			return ;
		}

		if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
			(instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
			(instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
			) {
			*instance->consumer = *instance->producer;
		} else {
			*instance->consumer = 0;
			*instance->producer = 0;
		}

		megasas_issue_init_mfi(instance);

		spin_lock_irqsave(&instance->hba_lock, flags);
3413
		atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3414
		spin_unlock_irqrestore(&instance->hba_lock, flags);
3415
		instance->instancet->enable_intr(instance);
3416 3417 3418 3419 3420 3421

		megasas_issue_pending_cmds_again(instance);
		instance->issuepend_done = 1;
	}
}

3422 3423 3424 3425
/**
 * megasas_deplete_reply_queue -	Processes all completed commands
 * @instance:				Adapter soft state
 * @alt_status:				Alternate status to be returned to
3426 3427
 *					SCSI mid-layer instead of the status
 *					returned by the FW
3428
 * Note: this must be called with hba lock held
3429
 */
3430
static int
3431 3432
megasas_deplete_reply_queue(struct megasas_instance *instance,
					u8 alt_status)
3433
{
3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444
	u32 mfiStatus;
	u32 fw_state;

	if ((mfiStatus = instance->instancet->check_reset(instance,
					instance->reg_set)) == 1) {
		return IRQ_HANDLED;
	}

	if ((mfiStatus = instance->instancet->clear_intr(
						instance->reg_set)
						) == 0) {
3445
		/* Hardware may not set outbound_intr_status in MSI-X mode */
3446
		if (!instance->msix_vectors)
3447
			return IRQ_NONE;
3448 3449 3450 3451 3452 3453 3454 3455 3456
	}

	instance->mfiStatus = mfiStatus;

	if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
		fw_state = instance->instancet->read_fw_status_reg(
				instance->reg_set) & MFI_STATE_MASK;

		if (fw_state != MFI_STATE_FAULT) {
3457
			dev_notice(&instance->pdev->dev, "fw state:%x\n",
3458 3459 3460 3461 3462
						fw_state);
		}

		if ((fw_state == MFI_STATE_FAULT) &&
				(instance->disableOnlineCtrlReset == 0)) {
3463
			dev_notice(&instance->pdev->dev, "wait adp restart\n");
3464 3465 3466 3467 3468 3469 3470 3471 3472

			if ((instance->pdev->device ==
					PCI_DEVICE_ID_LSI_SAS1064R) ||
				(instance->pdev->device ==
					PCI_DEVICE_ID_DELL_PERC5) ||
				(instance->pdev->device ==
					PCI_DEVICE_ID_LSI_VERDE_ZCR)) {

				*instance->consumer =
3473
					cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3474 3475 3476
			}


3477
			instance->instancet->disable_intr(instance);
3478
			atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3479 3480 3481 3482 3483
			instance->issuepend_done = 0;

			atomic_set(&instance->fw_outstanding, 0);
			megasas_internal_reset_defer_cmds(instance);

3484
			dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3485
					fw_state, atomic_read(&instance->adprecovery));
3486 3487 3488 3489 3490

			schedule_work(&instance->work_init);
			return IRQ_HANDLED;

		} else {
3491
			dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3492 3493 3494
				fw_state, instance->disableOnlineCtrlReset);
		}
	}
3495

3496
	tasklet_schedule(&instance->isr_tasklet);
3497 3498 3499 3500 3501
	return IRQ_HANDLED;
}
/**
 * megasas_isr - isr entry point
 */
3502
static irqreturn_t megasas_isr(int irq, void *devp)
3503
{
3504 3505
	struct megasas_irq_context *irq_context = devp;
	struct megasas_instance *instance = irq_context->instance;
3506
	unsigned long flags;
3507
	irqreturn_t rc;
3508

3509
	if (atomic_read(&instance->fw_reset_no_pci_access))
3510 3511 3512
		return IRQ_HANDLED;

	spin_lock_irqsave(&instance->hba_lock, flags);
3513
	rc = megasas_deplete_reply_queue(instance, DID_OK);
3514 3515 3516
	spin_unlock_irqrestore(&instance->hba_lock, flags);

	return rc;
3517 3518 3519 3520
}

/**
 * megasas_transition_to_ready -	Move the FW to READY state
3521
 * @instance:				Adapter soft state
3522 3523 3524 3525 3526 3527
 *
 * During the initialization, FW passes can potentially be in any one of
 * several possible states. If the FW in operational, waiting-for-handshake
 * states, driver must take steps to bring it to ready state. Otherwise, it
 * has to wait for the ready state.
 */
3528
int
3529
megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3530 3531 3532 3533 3534
{
	int i;
	u8 max_wait;
	u32 fw_state;
	u32 cur_state;
3535
	u32 abs_state, curr_abs_state;
3536

3537 3538
	abs_state = instance->instancet->read_fw_status_reg(instance->reg_set);
	fw_state = abs_state & MFI_STATE_MASK;
3539

3540
	if (fw_state != MFI_STATE_READY)
3541
		dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
3542
		       " state\n");
3543

3544 3545 3546 3547 3548
	while (fw_state != MFI_STATE_READY) {

		switch (fw_state) {

		case MFI_STATE_FAULT:
3549
			dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW in FAULT state!!\n");
3550 3551 3552 3553 3554 3555
			if (ocr) {
				max_wait = MEGASAS_RESET_WAIT_TIME;
				cur_state = MFI_STATE_FAULT;
				break;
			} else
				return -ENODEV;
3556 3557 3558 3559 3560

		case MFI_STATE_WAIT_HANDSHAKE:
			/*
			 * Set the CLR bit in inbound doorbell
			 */
3561
			if ((instance->pdev->device ==
3562 3563
				PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
				(instance->pdev->device ==
3564
				 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3565
				(instance->ctrl_context))
3566 3567
				writel(
				  MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3568
				  &instance->reg_set->doorbell);
3569
			else
3570 3571 3572
				writel(
				    MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
					&instance->reg_set->inbound_doorbell);
3573

3574
			max_wait = MEGASAS_RESET_WAIT_TIME;
3575 3576 3577
			cur_state = MFI_STATE_WAIT_HANDSHAKE;
			break;

3578
		case MFI_STATE_BOOT_MESSAGE_PENDING:
3579
			if ((instance->pdev->device ==
3580 3581 3582
			     PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
				(instance->pdev->device ==
				 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3583
				(instance->ctrl_context))
3584
				writel(MFI_INIT_HOTPLUG,
3585
				       &instance->reg_set->doorbell);
3586
			else
3587 3588
				writel(MFI_INIT_HOTPLUG,
					&instance->reg_set->inbound_doorbell);
3589

3590
			max_wait = MEGASAS_RESET_WAIT_TIME;
3591 3592 3593
			cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
			break;

3594 3595
		case MFI_STATE_OPERATIONAL:
			/*
3596
			 * Bring it to READY state; assuming max wait 10 secs
3597
			 */
3598
			instance->instancet->disable_intr(instance);
3599 3600 3601
			if ((instance->pdev->device ==
				PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
				(instance->pdev->device ==
3602
				PCI_DEVICE_ID_LSI_SAS0071SKINNY)  ||
3603
				(instance->ctrl_context)) {
3604
				writel(MFI_RESET_FLAGS,
3605
					&instance->reg_set->doorbell);
3606 3607

				if (instance->ctrl_context) {
3608 3609 3610 3611 3612 3613 3614 3615 3616 3617
					for (i = 0; i < (10 * 1000); i += 20) {
						if (readl(
							    &instance->
							    reg_set->
							    doorbell) & 1)
							msleep(20);
						else
							break;
					}
				}
3618 3619 3620
			} else
				writel(MFI_RESET_FLAGS,
					&instance->reg_set->inbound_doorbell);
3621

3622
			max_wait = MEGASAS_RESET_WAIT_TIME;
3623 3624 3625 3626 3627 3628 3629
			cur_state = MFI_STATE_OPERATIONAL;
			break;

		case MFI_STATE_UNDEFINED:
			/*
			 * This state should not last for more than 2 seconds
			 */
3630
			max_wait = MEGASAS_RESET_WAIT_TIME;
3631 3632 3633 3634
			cur_state = MFI_STATE_UNDEFINED;
			break;

		case MFI_STATE_BB_INIT:
3635
			max_wait = MEGASAS_RESET_WAIT_TIME;
3636 3637 3638 3639
			cur_state = MFI_STATE_BB_INIT;
			break;

		case MFI_STATE_FW_INIT:
3640
			max_wait = MEGASAS_RESET_WAIT_TIME;
3641 3642 3643 3644
			cur_state = MFI_STATE_FW_INIT;
			break;

		case MFI_STATE_FW_INIT_2:
3645
			max_wait = MEGASAS_RESET_WAIT_TIME;
3646 3647 3648 3649
			cur_state = MFI_STATE_FW_INIT_2;
			break;

		case MFI_STATE_DEVICE_SCAN:
3650
			max_wait = MEGASAS_RESET_WAIT_TIME;
3651 3652 3653 3654
			cur_state = MFI_STATE_DEVICE_SCAN;
			break;

		case MFI_STATE_FLUSH_CACHE:
3655
			max_wait = MEGASAS_RESET_WAIT_TIME;
3656 3657 3658 3659
			cur_state = MFI_STATE_FLUSH_CACHE;
			break;

		default:
3660
			dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
3661 3662 3663 3664 3665 3666 3667 3668
			       fw_state);
			return -ENODEV;
		}

		/*
		 * The cur_state should not last for more than max_wait secs
		 */
		for (i = 0; i < (max_wait * 1000); i++) {
3669 3670
			curr_abs_state = instance->instancet->
				read_fw_status_reg(instance->reg_set);
3671

3672
			if (abs_state == curr_abs_state) {
3673 3674 3675 3676 3677 3678 3679 3680
				msleep(1);
			} else
				break;
		}

		/*
		 * Return error if fw_state hasn't changed after max_wait
		 */
3681
		if (curr_abs_state == abs_state) {
3682
			dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
3683 3684 3685
			       "in %d secs\n", fw_state, max_wait);
			return -ENODEV;
		}
3686 3687 3688

		abs_state = curr_abs_state;
		fw_state = curr_abs_state & MFI_STATE_MASK;
3689
	}
3690
	dev_info(&instance->pdev->dev, "FW now in Ready state\n");
3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701

	return 0;
}

/**
 * megasas_teardown_frame_pool -	Destroy the cmd frame DMA pool
 * @instance:				Adapter soft state
 */
static void megasas_teardown_frame_pool(struct megasas_instance *instance)
{
	int i;
3702
	u32 max_cmd = instance->max_mfi_cmds;
3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719
	struct megasas_cmd *cmd;

	if (!instance->frame_dma_pool)
		return;

	/*
	 * Return all frames to pool
	 */
	for (i = 0; i < max_cmd; i++) {

		cmd = instance->cmd_list[i];

		if (cmd->frame)
			pci_pool_free(instance->frame_dma_pool, cmd->frame,
				      cmd->frame_phys_addr);

		if (cmd->sense)
3720
			pci_pool_free(instance->sense_dma_pool, cmd->sense,
3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751
				      cmd->sense_phys_addr);
	}

	/*
	 * Now destroy the pool itself
	 */
	pci_pool_destroy(instance->frame_dma_pool);
	pci_pool_destroy(instance->sense_dma_pool);

	instance->frame_dma_pool = NULL;
	instance->sense_dma_pool = NULL;
}

/**
 * megasas_create_frame_pool -	Creates DMA pool for cmd frames
 * @instance:			Adapter soft state
 *
 * Each command packet has an embedded DMA memory buffer that is used for
 * filling MFI frame and the SG list that immediately follows the frame. This
 * function creates those DMA memory buffers for each command packet by using
 * PCI pool facility.
 */
static int megasas_create_frame_pool(struct megasas_instance *instance)
{
	int i;
	u32 max_cmd;
	u32 sge_sz;
	u32 total_sz;
	u32 frame_count;
	struct megasas_cmd *cmd;

3752
	max_cmd = instance->max_mfi_cmds;
3753 3754 3755 3756 3757 3758 3759 3760

	/*
	 * Size of our frame is 64 bytes for MFI frame, followed by max SG
	 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
	 */
	sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
	    sizeof(struct megasas_sge32);

3761
	if (instance->flag_ieee)
3762 3763
		sge_sz = sizeof(struct megasas_sge_skinny);

3764
	/*
3765 3766 3767 3768 3769 3770 3771 3772 3773
	 * For MFI controllers.
	 * max_num_sge = 60
	 * max_sge_sz  = 16 byte (sizeof megasas_sge_skinny)
	 * Total 960 byte (15 MFI frame of 64 byte)
	 *
	 * Fusion adapter require only 3 extra frame.
	 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
	 * max_sge_sz  = 12 byte (sizeof  megasas_sge64)
	 * Total 192 byte (3 MFI frame of 64 byte)
3774
	 */
3775
	frame_count = instance->ctrl_context ? (3 + 1) : (15 + 1);
3776 3777 3778 3779 3780
	total_sz = MEGAMFI_FRAME_SIZE * frame_count;
	/*
	 * Use DMA pool facility provided by PCI layer
	 */
	instance->frame_dma_pool = pci_pool_create("megasas frame pool",
3781
					instance->pdev, total_sz, 256, 0);
3782 3783

	if (!instance->frame_dma_pool) {
3784
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
3785 3786 3787 3788 3789 3790 3791
		return -ENOMEM;
	}

	instance->sense_dma_pool = pci_pool_create("megasas sense pool",
						   instance->pdev, 128, 4, 0);

	if (!instance->sense_dma_pool) {
3792
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819

		pci_pool_destroy(instance->frame_dma_pool);
		instance->frame_dma_pool = NULL;

		return -ENOMEM;
	}

	/*
	 * Allocate and attach a frame to each of the commands in cmd_list.
	 * By making cmd->index as the context instead of the &cmd, we can
	 * always use 32bit context regardless of the architecture
	 */
	for (i = 0; i < max_cmd; i++) {

		cmd = instance->cmd_list[i];

		cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
					    GFP_KERNEL, &cmd->frame_phys_addr);

		cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
					    GFP_KERNEL, &cmd->sense_phys_addr);

		/*
		 * megasas_teardown_frame_pool() takes care of freeing
		 * whatever has been allocated
		 */
		if (!cmd->frame || !cmd->sense) {
3820
			dev_printk(KERN_DEBUG, &instance->pdev->dev, "pci_pool_alloc failed\n");
3821 3822 3823 3824
			megasas_teardown_frame_pool(instance);
			return -ENOMEM;
		}

3825
		memset(cmd->frame, 0, total_sz);
3826
		cmd->frame->io.context = cpu_to_le32(cmd->index);
3827
		cmd->frame->io.pad_0 = 0;
3828
		if (!instance->ctrl_context && reset_devices)
3829
			cmd->frame->hdr.cmd = MFI_CMD_INVALID;
3830 3831 3832 3833 3834 3835 3836 3837 3838
	}

	return 0;
}

/**
 * megasas_free_cmds -	Free all the cmds in the free cmd pool
 * @instance:		Adapter soft state
 */
3839
void megasas_free_cmds(struct megasas_instance *instance)
3840 3841
{
	int i;
3842

3843 3844 3845 3846
	/* First free the MFI frame pool */
	megasas_teardown_frame_pool(instance);

	/* Free all the commands in the cmd_list */
3847 3848
	for (i = 0; i < instance->max_mfi_cmds; i++)

3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875
		kfree(instance->cmd_list[i]);

	/* Free the cmd_list buffer itself */
	kfree(instance->cmd_list);
	instance->cmd_list = NULL;

	INIT_LIST_HEAD(&instance->cmd_pool);
}

/**
 * megasas_alloc_cmds -	Allocates the command packets
 * @instance:		Adapter soft state
 *
 * Each command that is issued to the FW, whether IO commands from the OS or
 * internal commands like IOCTLs, are wrapped in local data structure called
 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
 * the FW.
 *
 * Each frame has a 32-bit field called context (tag). This context is used
 * to get back the megasas_cmd from the frame when a frame gets completed in
 * the ISR. Typically the address of the megasas_cmd itself would be used as
 * the context. But we wanted to keep the differences between 32 and 64 bit
 * systems to the mininum. We always use 32 bit integers for the context. In
 * this driver, the 32 bit values are the indices into an array cmd_list.
 * This array is used only to look up the megasas_cmd given the context. The
 * free commands themselves are maintained in a linked list called cmd_pool.
 */
3876
int megasas_alloc_cmds(struct megasas_instance *instance)
3877 3878 3879 3880 3881
{
	int i;
	int j;
	u32 max_cmd;
	struct megasas_cmd *cmd;
3882
	struct fusion_context *fusion;
3883

3884
	fusion = instance->ctrl_context;
3885
	max_cmd = instance->max_mfi_cmds;
3886 3887 3888 3889 3890 3891

	/*
	 * instance->cmd_list is an array of struct megasas_cmd pointers.
	 * Allocate the dynamic array first and then allocate individual
	 * commands.
	 */
3892
	instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3893 3894

	if (!instance->cmd_list) {
3895
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
3896 3897 3898
		return -ENOMEM;
	}

3899
	memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920

	for (i = 0; i < max_cmd; i++) {
		instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
						GFP_KERNEL);

		if (!instance->cmd_list[i]) {

			for (j = 0; j < i; j++)
				kfree(instance->cmd_list[j]);

			kfree(instance->cmd_list);
			instance->cmd_list = NULL;

			return -ENOMEM;
		}
	}

	for (i = 0; i < max_cmd; i++) {
		cmd = instance->cmd_list[i];
		memset(cmd, 0, sizeof(struct megasas_cmd));
		cmd->index = i;
3921
		cmd->scmd = NULL;
3922 3923 3924 3925 3926 3927 3928 3929 3930
		cmd->instance = instance;

		list_add_tail(&cmd->list, &instance->cmd_pool);
	}

	/*
	 * Create a frame pool and assign one frame to each cmd
	 */
	if (megasas_create_frame_pool(instance)) {
3931
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
3932 3933 3934 3935 3936 3937
		megasas_free_cmds(instance);
	}

	return 0;
}

3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956
/*
 * dcmd_timeout_ocr_possible -	Check if OCR is possible based on Driver/FW state.
 * @instance:				Adapter soft state
 *
 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
 * or FW is not under OCR.
 */
inline int
dcmd_timeout_ocr_possible(struct megasas_instance *instance) {

	if (!instance->ctrl_context)
		return KILL_ADAPTER;
	else if (instance->unload ||
			test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
		return IGNORE_TIMEOUT;
	else
		return INITIATE_OCR;
}

3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023
static int
megasas_get_pd_info(struct megasas_instance *instance, u16 device_id)
{
	int ret;
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;

	cmd = megasas_get_cmd(instance);

	if (!cmd) {
		dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
		return -ENOMEM;
	}

	dcmd = &cmd->frame->dcmd;

	memset(instance->pd_info, 0, sizeof(*instance->pd_info));
	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);

	dcmd->mbox.s[0] = cpu_to_le16(device_id);
	dcmd->cmd = MFI_CMD_DCMD;
	dcmd->cmd_status = 0xFF;
	dcmd->sge_count = 1;
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
	dcmd->timeout = 0;
	dcmd->pad_0 = 0;
	dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
	dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->pd_info_h);
	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_PD_INFO));

	if (instance->ctrl_context && !instance->mask_interrupts)
		ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
	else
		ret = megasas_issue_polled(instance, cmd);

	switch (ret) {
	case DCMD_SUCCESS:
		instance->pd_list[device_id].interface =
				instance->pd_info->state.ddf.pdType.intf;
		break;

	case DCMD_TIMEOUT:

		switch (dcmd_timeout_ocr_possible(instance)) {
		case INITIATE_OCR:
			cmd->flags |= DRV_DCMD_SKIP_REFIRE;
			megasas_reset_fusion(instance->host,
				MFI_IO_TIMEOUT_OCR);
			break;
		case KILL_ADAPTER:
			megaraid_sas_kill_hba(instance);
			break;
		case IGNORE_TIMEOUT:
			dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
				__func__, __LINE__);
			break;
		}

		break;
	}

	if (ret != DCMD_TIMEOUT)
		megasas_return_cmd(instance, cmd);

	return ret;
}
4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045
/*
 * megasas_get_pd_list_info -	Returns FW's pd_list structure
 * @instance:				Adapter soft state
 * @pd_list:				pd_list structure
 *
 * Issues an internal command (DCMD) to get the FW's controller PD
 * list structure.  This information is mainly used to find out SYSTEM
 * supported by the FW.
 */
static int
megasas_get_pd_list(struct megasas_instance *instance)
{
	int ret = 0, pd_index = 0;
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;
	struct MR_PD_LIST *ci;
	struct MR_PD_ADDRESS *pd_addr;
	dma_addr_t ci_h = 0;

	cmd = megasas_get_cmd(instance);

	if (!cmd) {
4046
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4047 4048 4049 4050 4051 4052 4053 4054 4055
		return -ENOMEM;
	}

	dcmd = &cmd->frame->dcmd;

	ci = pci_alloc_consistent(instance->pdev,
		  MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);

	if (!ci) {
4056
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for pd_list\n");
4057 4058 4059 4060 4061 4062 4063 4064 4065 4066
		megasas_return_cmd(instance, cmd);
		return -ENOMEM;
	}

	memset(ci, 0, sizeof(*ci));
	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);

	dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
	dcmd->mbox.b[1] = 0;
	dcmd->cmd = MFI_CMD_DCMD;
4067
	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4068
	dcmd->sge_count = 1;
4069
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4070
	dcmd->timeout = 0;
4071
	dcmd->pad_0 = 0;
4072 4073 4074 4075
	dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
	dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
	dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4076

4077 4078
	if (instance->ctrl_context && !instance->mask_interrupts)
		ret = megasas_issue_blocked_cmd(instance, cmd,
4079
			MFI_IO_TIMEOUT_SECS);
4080 4081
	else
		ret = megasas_issue_polled(instance, cmd);
4082

4083 4084 4085 4086 4087
	switch (ret) {
	case DCMD_FAILED:
		megaraid_sas_kill_hba(instance);
		break;
	case DCMD_TIMEOUT:
4088

4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109
		switch (dcmd_timeout_ocr_possible(instance)) {
		case INITIATE_OCR:
			cmd->flags |= DRV_DCMD_SKIP_REFIRE;
			/*
			 * DCMD failed from AEN path.
			 * AEN path already hold reset_mutex to avoid PCI access
			 * while OCR is in progress.
			 */
			mutex_unlock(&instance->reset_mutex);
			megasas_reset_fusion(instance->host,
						MFI_IO_TIMEOUT_OCR);
			mutex_lock(&instance->reset_mutex);
			break;
		case KILL_ADAPTER:
			megaraid_sas_kill_hba(instance);
			break;
		case IGNORE_TIMEOUT:
			dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
				__func__, __LINE__);
			break;
		}
4110

4111 4112 4113 4114 4115 4116 4117 4118
		break;

	case DCMD_SUCCESS:
		pd_addr = ci->addr;

		if ((le32_to_cpu(ci->count) >
			(MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
			break;
4119

4120
		memset(instance->local_pd_list, 0,
4121
				MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4122

4123
		for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4124
			instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid	=
4125
					le16_to_cpu(pd_addr->deviceId);
4126
			instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType	=
4127
					pd_addr->scsiDevType;
4128
			instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState	=
4129
					MR_PD_STATE_SYSTEM;
4130 4131
			pd_addr++;
		}
4132

4133 4134
		memcpy(instance->pd_list, instance->local_pd_list,
			sizeof(instance->pd_list));
4135 4136
		break;

4137 4138 4139 4140 4141
	}

	pci_free_consistent(instance->pdev,
				MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
				ci, ci_h);
4142

4143 4144
	if (ret != DCMD_TIMEOUT)
		megasas_return_cmd(instance, cmd);
4145 4146 4147 4148

	return ret;
}

4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165
/*
 * megasas_get_ld_list_info -	Returns FW's ld_list structure
 * @instance:				Adapter soft state
 * @ld_list:				ld_list structure
 *
 * Issues an internal command (DCMD) to get the FW's controller PD
 * list structure.  This information is mainly used to find out SYSTEM
 * supported by the FW.
 */
static int
megasas_get_ld_list(struct megasas_instance *instance)
{
	int ret = 0, ld_index = 0, ids = 0;
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;
	struct MR_LD_LIST *ci;
	dma_addr_t ci_h = 0;
4166
	u32 ld_count;
4167 4168 4169 4170

	cmd = megasas_get_cmd(instance);

	if (!cmd) {
4171
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4172 4173 4174 4175 4176 4177 4178 4179 4180 4181
		return -ENOMEM;
	}

	dcmd = &cmd->frame->dcmd;

	ci = pci_alloc_consistent(instance->pdev,
				sizeof(struct MR_LD_LIST),
				&ci_h);

	if (!ci) {
4182
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem in get_ld_list\n");
4183 4184 4185 4186 4187 4188 4189
		megasas_return_cmd(instance, cmd);
		return -ENOMEM;
	}

	memset(ci, 0, sizeof(*ci));
	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);

4190 4191
	if (instance->supportmax256vd)
		dcmd->mbox.b[0] = 1;
4192
	dcmd->cmd = MFI_CMD_DCMD;
4193
	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4194
	dcmd->sge_count = 1;
4195
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4196
	dcmd->timeout = 0;
4197 4198 4199 4200
	dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
	dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
4201 4202
	dcmd->pad_0  = 0;

4203 4204
	if (instance->ctrl_context && !instance->mask_interrupts)
		ret = megasas_issue_blocked_cmd(instance, cmd,
4205
			MFI_IO_TIMEOUT_SECS);
4206 4207 4208
	else
		ret = megasas_issue_polled(instance, cmd);

4209 4210
	ld_count = le32_to_cpu(ci->ldCount);

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
	switch (ret) {
	case DCMD_FAILED:
		megaraid_sas_kill_hba(instance);
		break;
	case DCMD_TIMEOUT:

		switch (dcmd_timeout_ocr_possible(instance)) {
		case INITIATE_OCR:
			cmd->flags |= DRV_DCMD_SKIP_REFIRE;
			/*
			 * DCMD failed from AEN path.
			 * AEN path already hold reset_mutex to avoid PCI access
			 * while OCR is in progress.
			 */
			mutex_unlock(&instance->reset_mutex);
			megasas_reset_fusion(instance->host,
						MFI_IO_TIMEOUT_OCR);
			mutex_lock(&instance->reset_mutex);
			break;
		case KILL_ADAPTER:
			megaraid_sas_kill_hba(instance);
			break;
		case IGNORE_TIMEOUT:
			dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
				__func__, __LINE__);
			break;
		}

		break;

	case DCMD_SUCCESS:
		if (ld_count > instance->fw_supported_vd_count)
			break;
4244

4245
		memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4246

4247
		for (ld_index = 0; ld_index < ld_count; ld_index++) {
4248 4249
			if (ci->ldList[ld_index].state != 0) {
				ids = ci->ldList[ld_index].ref.targetId;
4250
				instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4251 4252
			}
		}
4253 4254

		break;
4255 4256
	}

4257 4258 4259 4260
	pci_free_consistent(instance->pdev, sizeof(struct MR_LD_LIST), ci, ci_h);

	if (ret != DCMD_TIMEOUT)
		megasas_return_cmd(instance, cmd);
4261 4262 4263 4264

	return ret;
}

4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281
/**
 * megasas_ld_list_query -	Returns FW's ld_list structure
 * @instance:				Adapter soft state
 * @ld_list:				ld_list structure
 *
 * Issues an internal command (DCMD) to get the FW's controller PD
 * list structure.  This information is mainly used to find out SYSTEM
 * supported by the FW.
 */
static int
megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
{
	int ret = 0, ld_index = 0, ids = 0;
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;
	struct MR_LD_TARGETID_LIST *ci;
	dma_addr_t ci_h = 0;
4282
	u32 tgtid_count;
4283 4284 4285 4286

	cmd = megasas_get_cmd(instance);

	if (!cmd) {
4287 4288
		dev_warn(&instance->pdev->dev,
		         "megasas_ld_list_query: Failed to get cmd\n");
4289 4290 4291 4292 4293 4294 4295 4296 4297
		return -ENOMEM;
	}

	dcmd = &cmd->frame->dcmd;

	ci = pci_alloc_consistent(instance->pdev,
				  sizeof(struct MR_LD_TARGETID_LIST), &ci_h);

	if (!ci) {
4298 4299
		dev_warn(&instance->pdev->dev,
		         "Failed to alloc mem for ld_list_query\n");
4300 4301 4302 4303 4304 4305 4306 4307
		megasas_return_cmd(instance, cmd);
		return -ENOMEM;
	}

	memset(ci, 0, sizeof(*ci));
	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);

	dcmd->mbox.b[0] = query_type;
4308 4309
	if (instance->supportmax256vd)
		dcmd->mbox.b[2] = 1;
4310 4311

	dcmd->cmd = MFI_CMD_DCMD;
4312
	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4313
	dcmd->sge_count = 1;
4314
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4315
	dcmd->timeout = 0;
4316 4317 4318 4319
	dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
	dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4320 4321
	dcmd->pad_0  = 0;

4322
	if (instance->ctrl_context && !instance->mask_interrupts)
4323
		ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4324 4325
	else
		ret = megasas_issue_polled(instance, cmd);
4326

4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362
	switch (ret) {
	case DCMD_FAILED:
		dev_info(&instance->pdev->dev,
			"DCMD not supported by firmware - %s %d\n",
				__func__, __LINE__);
		ret = megasas_get_ld_list(instance);
		break;
	case DCMD_TIMEOUT:
		switch (dcmd_timeout_ocr_possible(instance)) {
		case INITIATE_OCR:
			cmd->flags |= DRV_DCMD_SKIP_REFIRE;
			/*
			 * DCMD failed from AEN path.
			 * AEN path already hold reset_mutex to avoid PCI access
			 * while OCR is in progress.
			 */
			mutex_unlock(&instance->reset_mutex);
			megasas_reset_fusion(instance->host,
						MFI_IO_TIMEOUT_OCR);
			mutex_lock(&instance->reset_mutex);
			break;
		case KILL_ADAPTER:
			megaraid_sas_kill_hba(instance);
			break;
		case IGNORE_TIMEOUT:
			dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
				__func__, __LINE__);
			break;
		}

		break;
	case DCMD_SUCCESS:
		tgtid_count = le32_to_cpu(ci->count);

		if ((tgtid_count > (instance->fw_supported_vd_count)))
			break;
4363

4364
		memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4365
		for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4366 4367 4368 4369
			ids = ci->targetId[ld_index];
			instance->ld_ids[ids] = ci->targetId[ld_index];
		}

4370
		break;
4371 4372 4373
	}

	pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
4374
		    ci, ci_h);
4375

4376 4377
	if (ret != DCMD_TIMEOUT)
		megasas_return_cmd(instance, cmd);
4378 4379 4380 4381

	return ret;
}

4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413
/*
 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
 * instance			 : Controller's instance
*/
static void megasas_update_ext_vd_details(struct megasas_instance *instance)
{
	struct fusion_context *fusion;
	u32 old_map_sz;
	u32 new_map_sz;

	fusion = instance->ctrl_context;
	/* For MFI based controllers return dummy success */
	if (!fusion)
		return;

	instance->supportmax256vd =
		instance->ctrl_info->adapterOperations3.supportMaxExtLDs;
	/* Below is additional check to address future FW enhancement */
	if (instance->ctrl_info->max_lds > 64)
		instance->supportmax256vd = 1;

	instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
					* MEGASAS_MAX_DEV_PER_CHANNEL;
	instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
					* MEGASAS_MAX_DEV_PER_CHANNEL;
	if (instance->supportmax256vd) {
		instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
		instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
	} else {
		instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
		instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
	}
4414 4415 4416 4417 4418

	dev_info(&instance->pdev->dev,
		"firmware type\t: %s\n",
		instance->supportmax256vd ? "Extended VD(240 VD)firmware" :
		"Legacy(64 VD) firmware");
4419

4420
	old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
4421 4422
				(sizeof(struct MR_LD_SPAN_MAP) *
				(instance->fw_supported_vd_count - 1));
4423 4424
	new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
	fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) +
4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436
				(sizeof(struct MR_LD_SPAN_MAP) *
				(instance->drv_supported_vd_count - 1));

	fusion->max_map_sz = max(old_map_sz, new_map_sz);


	if (instance->supportmax256vd)
		fusion->current_map_sz = new_map_sz;
	else
		fusion->current_map_sz = old_map_sz;
}

4437 4438 4439 4440 4441 4442 4443 4444
/**
 * megasas_get_controller_info -	Returns FW's controller structure
 * @instance:				Adapter soft state
 *
 * Issues an internal command (DCMD) to get the FW's controller structure.
 * This information is mainly used to find out the maximum IO transfer per
 * command supported by the FW.
 */
4445
int
4446
megasas_get_ctrl_info(struct megasas_instance *instance)
4447 4448 4449 4450 4451
{
	int ret = 0;
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;
	struct megasas_ctrl_info *ci;
4452
	struct megasas_ctrl_info *ctrl_info;
4453 4454
	dma_addr_t ci_h = 0;

4455 4456
	ctrl_info = instance->ctrl_info;

4457 4458 4459
	cmd = megasas_get_cmd(instance);

	if (!cmd) {
4460
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
4461 4462 4463 4464 4465 4466 4467 4468 4469
		return -ENOMEM;
	}

	dcmd = &cmd->frame->dcmd;

	ci = pci_alloc_consistent(instance->pdev,
				  sizeof(struct megasas_ctrl_info), &ci_h);

	if (!ci) {
4470
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ctrl info\n");
4471 4472 4473 4474 4475 4476 4477 4478
		megasas_return_cmd(instance, cmd);
		return -ENOMEM;
	}

	memset(ci, 0, sizeof(*ci));
	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);

	dcmd->cmd = MFI_CMD_DCMD;
4479
	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4480
	dcmd->sge_count = 1;
4481
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4482
	dcmd->timeout = 0;
4483
	dcmd->pad_0 = 0;
4484 4485 4486 4487
	dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
	dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4488
	dcmd->mbox.b[0] = 1;
4489

4490
	if (instance->ctrl_context && !instance->mask_interrupts)
4491
		ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4492 4493 4494
	else
		ret = megasas_issue_polled(instance, cmd);

4495 4496
	switch (ret) {
	case DCMD_SUCCESS:
4497
		memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
4498 4499 4500
		/* Save required controller information in
		 * CPU endianness format.
		 */
4501 4502 4503
		le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
		le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
		le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
4504 4505 4506 4507 4508 4509

		/* Update the latest Ext VD info.
		 * From Init path, store current firmware details.
		 * From OCR path, detect any firmware properties changes.
		 * in case of Firmware upgrade without system reboot.
		 */
4510
		megasas_update_ext_vd_details(instance);
4511 4512
		instance->use_seqnum_jbod_fp =
			ctrl_info->adapterOperations3.useSeqNumJbodFP;
4513 4514

		/*Check whether controller is iMR or MR */
4515 4516
		instance->is_imr = (ctrl_info->memory_size ? 0 : 1);
		dev_info(&instance->pdev->dev,
4517 4518 4519 4520
			"controller type\t: %s(%dMB)\n",
			instance->is_imr ? "iMR" : "MR",
			le16_to_cpu(ctrl_info->memory_size));

4521 4522
		instance->disableOnlineCtrlReset =
			ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
4523 4524
		instance->secure_jbod_support =
			ctrl_info->adapterOperations3.supportSecurityonJBOD;
4525 4526
		dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
			instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
4527 4528
		dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
			instance->secure_jbod_support ? "Yes" : "No");
4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549
		break;

	case DCMD_TIMEOUT:
		switch (dcmd_timeout_ocr_possible(instance)) {
		case INITIATE_OCR:
			cmd->flags |= DRV_DCMD_SKIP_REFIRE;
			megasas_reset_fusion(instance->host,
				MFI_IO_TIMEOUT_OCR);
			break;
		case KILL_ADAPTER:
			megaraid_sas_kill_hba(instance);
			break;
		case IGNORE_TIMEOUT:
			dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
				__func__, __LINE__);
			break;
		}
	case DCMD_FAILED:
		megaraid_sas_kill_hba(instance);
		break;

4550
	}
4551 4552 4553 4554

	pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
			    ci, ci_h);

4555
	megasas_return_cmd(instance, cmd);
4556 4557


4558 4559 4560
	return ret;
}

4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595
/*
 * megasas_set_crash_dump_params -	Sends address of crash dump DMA buffer
 *					to firmware
 *
 * @instance:				Adapter soft state
 * @crash_buf_state		-	tell FW to turn ON/OFF crash dump feature
					MR_CRASH_BUF_TURN_OFF = 0
					MR_CRASH_BUF_TURN_ON = 1
 * @return 0 on success non-zero on failure.
 * Issues an internal command (DCMD) to set parameters for crash dump feature.
 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
 * that driver supports crash dump feature. This DCMD will be sent only if
 * crash dump feature is supported by the FW.
 *
 */
int megasas_set_crash_dump_params(struct megasas_instance *instance,
	u8 crash_buf_state)
{
	int ret = 0;
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;

	cmd = megasas_get_cmd(instance);

	if (!cmd) {
		dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
		return -ENOMEM;
	}


	dcmd = &cmd->frame->dcmd;

	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
	dcmd->mbox.b[0] = crash_buf_state;
	dcmd->cmd = MFI_CMD_DCMD;
4596
	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4597 4598 4599 4600 4601 4602 4603 4604 4605
	dcmd->sge_count = 1;
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
	dcmd->timeout = 0;
	dcmd->pad_0 = 0;
	dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
	dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h);
	dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE);

4606
	if (instance->ctrl_context && !instance->mask_interrupts)
4607
		ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4608
	else
4609 4610
		ret = megasas_issue_polled(instance, cmd);

4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628
	if (ret == DCMD_TIMEOUT) {
		switch (dcmd_timeout_ocr_possible(instance)) {
		case INITIATE_OCR:
			cmd->flags |= DRV_DCMD_SKIP_REFIRE;
			megasas_reset_fusion(instance->host,
					MFI_IO_TIMEOUT_OCR);
			break;
		case KILL_ADAPTER:
			megaraid_sas_kill_hba(instance);
			break;
		case IGNORE_TIMEOUT:
			dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
				__func__, __LINE__);
			break;
		}
	} else
		megasas_return_cmd(instance, cmd);

4629 4630 4631
	return ret;
}

4632 4633 4634 4635 4636 4637 4638 4639 4640
/**
 * megasas_issue_init_mfi -	Initializes the FW
 * @instance:		Adapter soft state
 *
 * Issues the INIT MFI cmd
 */
static int
megasas_issue_init_mfi(struct megasas_instance *instance)
{
4641
	__le32 context;
4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669
	struct megasas_cmd *cmd;
	struct megasas_init_frame *init_frame;
	struct megasas_init_queue_info *initq_info;
	dma_addr_t init_frame_h;
	dma_addr_t initq_info_h;

	/*
	 * Prepare a init frame. Note the init frame points to queue info
	 * structure. Each frame has SGL allocated after first 64 bytes. For
	 * this frame - since we don't need any SGL - we use SGL's space as
	 * queue info structure
	 *
	 * We will not get a NULL command below. We just created the pool.
	 */
	cmd = megasas_get_cmd(instance);

	init_frame = (struct megasas_init_frame *)cmd->frame;
	initq_info = (struct megasas_init_queue_info *)
		((unsigned long)init_frame + 64);

	init_frame_h = cmd->frame_phys_addr;
	initq_info_h = init_frame_h + 64;

	context = init_frame->context;
	memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
	memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
	init_frame->context = context;

4670 4671
	initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
	initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
4672

4673 4674
	initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
	initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
4675 4676

	init_frame->cmd = MFI_CMD_INIT;
4677
	init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
4678 4679 4680 4681
	init_frame->queue_info_new_phys_addr_lo =
		cpu_to_le32(lower_32_bits(initq_info_h));
	init_frame->queue_info_new_phys_addr_hi =
		cpu_to_le32(upper_32_bits(initq_info_h));
4682

4683
	init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
4684 4685 4686 4687

	/*
	 * disable the intr before firing the init frame to FW
	 */
4688
	instance->instancet->disable_intr(instance);
4689 4690 4691 4692 4693 4694

	/*
	 * Issue the init frame in polled mode
	 */

	if (megasas_issue_polled(instance, cmd)) {
4695
		dev_err(&instance->pdev->dev, "Failed to init firmware\n");
4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707
		megasas_return_cmd(instance, cmd);
		goto fail_fw_init;
	}

	megasas_return_cmd(instance, cmd);

	return 0;

fail_fw_init:
	return -EINVAL;
}

4708 4709
static u32
megasas_init_adapter_mfi(struct megasas_instance *instance)
4710
{
4711
	struct megasas_register_set __iomem *reg_set;
4712 4713 4714 4715 4716 4717 4718 4719
	u32 context_sz;
	u32 reply_q_sz;

	reg_set = instance->reg_set;

	/*
	 * Get various operational parameters from status register
	 */
4720
	instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
4721 4722 4723 4724 4725 4726
	/*
	 * Reduce the max supported cmds by 1. This is to ensure that the
	 * reply_q_sz (1 more than the max cmd that driver may send)
	 * does not exceed max cmds that the FW can support
	 */
	instance->max_fw_cmds = instance->max_fw_cmds-1;
4727
	instance->max_mfi_cmds = instance->max_fw_cmds;
4728
	instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
4729
					0x10;
4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744
	/*
	 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
	 * are reserved for IOCTL + driver's internal DCMDs.
	 */
	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
		(instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
		instance->max_scsi_cmds = (instance->max_fw_cmds -
			MEGASAS_SKINNY_INT_CMDS);
		sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
	} else {
		instance->max_scsi_cmds = (instance->max_fw_cmds -
			MEGASAS_INT_CMDS);
		sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
	}

4745
	instance->cur_can_queue = instance->max_scsi_cmds;
4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768
	/*
	 * Create a pool of commands
	 */
	if (megasas_alloc_cmds(instance))
		goto fail_alloc_cmds;

	/*
	 * Allocate memory for reply queue. Length of reply queue should
	 * be _one_ more than the maximum commands handled by the firmware.
	 *
	 * Note: When FW completes commands, it places corresponding contex
	 * values in this circular reply queue. This circular queue is a fairly
	 * typical producer-consumer queue. FW is the producer (of completed
	 * commands) and the driver is the consumer.
	 */
	context_sz = sizeof(u32);
	reply_q_sz = context_sz * (instance->max_fw_cmds + 1);

	instance->reply_queue = pci_alloc_consistent(instance->pdev,
						     reply_q_sz,
						     &instance->reply_queue_h);

	if (!instance->reply_queue) {
4769
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
4770 4771 4772
		goto fail_reply_queue;
	}

4773
	if (megasas_issue_init_mfi(instance))
4774 4775
		goto fail_fw_init;

4776
	if (megasas_get_ctrl_info(instance)) {
4777 4778 4779 4780 4781 4782
		dev_err(&instance->pdev->dev, "(%d): Could get controller info "
			"Fail from %s %d\n", instance->unique_id,
			__func__, __LINE__);
		goto fail_fw_init;
	}

4783 4784 4785 4786 4787
	instance->fw_support_ieee = 0;
	instance->fw_support_ieee =
		(instance->instancet->read_fw_status_reg(reg_set) &
		0x04000000);

4788
	dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
4789 4790 4791 4792 4793
			instance->fw_support_ieee);

	if (instance->fw_support_ieee)
		instance->flag_ieee = 1;

4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806
	return 0;

fail_fw_init:

	pci_free_consistent(instance->pdev, reply_q_sz,
			    instance->reply_queue, instance->reply_queue_h);
fail_reply_queue:
	megasas_free_cmds(instance);

fail_alloc_cmds:
	return 1;
}

4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903 4904 4905 4906 4907
/*
 * megasas_setup_irqs_msix -		register legacy interrupts.
 * @instance:				Adapter soft state
 *
 * Do not enable interrupt, only setup ISRs.
 *
 * Return 0 on success.
 */
static int
megasas_setup_irqs_ioapic(struct megasas_instance *instance)
{
	struct pci_dev *pdev;

	pdev = instance->pdev;
	instance->irq_context[0].instance = instance;
	instance->irq_context[0].MSIxIndex = 0;
	if (request_irq(pdev->irq, instance->instancet->service_isr,
		IRQF_SHARED, "megasas", &instance->irq_context[0])) {
		dev_err(&instance->pdev->dev,
				"Failed to register IRQ from %s %d\n",
				__func__, __LINE__);
		return -1;
	}
	return 0;
}

/**
 * megasas_setup_irqs_msix -		register MSI-x interrupts.
 * @instance:				Adapter soft state
 * @is_probe:				Driver probe check
 *
 * Do not enable interrupt, only setup ISRs.
 *
 * Return 0 on success.
 */
static int
megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
{
	int i, j, cpu;
	struct pci_dev *pdev;

	pdev = instance->pdev;

	/* Try MSI-x */
	cpu = cpumask_first(cpu_online_mask);
	for (i = 0; i < instance->msix_vectors; i++) {
		instance->irq_context[i].instance = instance;
		instance->irq_context[i].MSIxIndex = i;
		if (request_irq(instance->msixentry[i].vector,
			instance->instancet->service_isr, 0, "megasas",
			&instance->irq_context[i])) {
			dev_err(&instance->pdev->dev,
				"Failed to register IRQ for vector %d.\n", i);
			for (j = 0; j < i; j++) {
				if (smp_affinity_enable)
					irq_set_affinity_hint(
						instance->msixentry[j].vector, NULL);
				free_irq(instance->msixentry[j].vector,
					&instance->irq_context[j]);
			}
			/* Retry irq register for IO_APIC*/
			instance->msix_vectors = 0;
			if (is_probe)
				return megasas_setup_irqs_ioapic(instance);
			else
				return -1;
		}
		if (smp_affinity_enable) {
			if (irq_set_affinity_hint(instance->msixentry[i].vector,
				get_cpu_mask(cpu)))
				dev_err(&instance->pdev->dev,
					"Failed to set affinity hint"
					" for cpu %d\n", cpu);
			cpu = cpumask_next(cpu, cpu_online_mask);
		}
	}
	return 0;
}

/*
 * megasas_destroy_irqs-		unregister interrupts.
 * @instance:				Adapter soft state
 * return:				void
 */
static void
megasas_destroy_irqs(struct megasas_instance *instance) {

	int i;

	if (instance->msix_vectors)
		for (i = 0; i < instance->msix_vectors; i++) {
			if (smp_affinity_enable)
				irq_set_affinity_hint(
					instance->msixentry[i].vector, NULL);
			free_irq(instance->msixentry[i].vector,
				 &instance->irq_context[i]);
		}
	else
		free_irq(instance->pdev->irq, &instance->irq_context[0]);
}

4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963
/**
 * megasas_setup_jbod_map -	setup jbod map for FP seq_number.
 * @instance:				Adapter soft state
 * @is_probe:				Driver probe check
 *
 * Return 0 on success.
 */
void
megasas_setup_jbod_map(struct megasas_instance *instance)
{
	int i;
	struct fusion_context *fusion = instance->ctrl_context;
	u32 pd_seq_map_sz;

	pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
		(sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));

	if (reset_devices || !fusion ||
		!instance->ctrl_info->adapterOperations3.useSeqNumJbodFP) {
		dev_info(&instance->pdev->dev,
			"Jbod map is not supported %s %d\n",
			__func__, __LINE__);
		instance->use_seqnum_jbod_fp = false;
		return;
	}

	if (fusion->pd_seq_sync[0])
		goto skip_alloc;

	for (i = 0; i < JBOD_MAPS_COUNT; i++) {
		fusion->pd_seq_sync[i] = dma_alloc_coherent
			(&instance->pdev->dev, pd_seq_map_sz,
			&fusion->pd_seq_phys[i], GFP_KERNEL);
		if (!fusion->pd_seq_sync[i]) {
			dev_err(&instance->pdev->dev,
				"Failed to allocate memory from %s %d\n",
				__func__, __LINE__);
			if (i == 1) {
				dma_free_coherent(&instance->pdev->dev,
					pd_seq_map_sz, fusion->pd_seq_sync[0],
					fusion->pd_seq_phys[0]);
				fusion->pd_seq_sync[0] = NULL;
			}
			instance->use_seqnum_jbod_fp = false;
			return;
		}
	}

skip_alloc:
	if (!megasas_sync_pd_seq_num(instance, false) &&
		!megasas_sync_pd_seq_num(instance, true))
		instance->use_seqnum_jbod_fp = true;
	else
		instance->use_seqnum_jbod_fp = false;
}

4964 4965 4966 4967 4968 4969 4970 4971 4972 4973 4974
/**
 * megasas_init_fw -	Initializes the FW
 * @instance:		Adapter soft state
 *
 * This is the main function for initializing firmware
 */

static int megasas_init_fw(struct megasas_instance *instance)
{
	u32 max_sectors_1;
	u32 max_sectors_2;
4975
	u32 tmp_sectors, msix_enable, scratch_pad_2;
4976
	resource_size_t base_addr;
4977
	struct megasas_register_set __iomem *reg_set;
4978
	struct megasas_ctrl_info *ctrl_info = NULL;
4979
	unsigned long bar_list;
4980
	int i, loop, fw_msix_count = 0;
4981
	struct IOV_111 *iovPtr;
4982 4983 4984
	struct fusion_context *fusion;

	fusion = instance->ctrl_context;
4985 4986 4987 4988 4989 4990

	/* Find first memory bar */
	bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
	instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
	if (pci_request_selected_regions(instance->pdev, instance->bar,
					 "megasas: LSI")) {
4991
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
4992 4993 4994
		return -EBUSY;
	}

4995 4996
	base_addr = pci_resource_start(instance->pdev, instance->bar);
	instance->reg_set = ioremap_nocache(base_addr, 8192);
4997 4998

	if (!instance->reg_set) {
4999
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5000 5001 5002 5003 5004 5005
		goto fail_ioremap;
	}

	reg_set = instance->reg_set;

	switch (instance->pdev->device) {
5006
	case PCI_DEVICE_ID_LSI_FUSION:
5007
	case PCI_DEVICE_ID_LSI_PLASMA:
5008
	case PCI_DEVICE_ID_LSI_INVADER:
5009
	case PCI_DEVICE_ID_LSI_FURY:
5010 5011
	case PCI_DEVICE_ID_LSI_INTRUDER:
	case PCI_DEVICE_ID_LSI_INTRUDER_24:
5012 5013
	case PCI_DEVICE_ID_LSI_CUTLASS_52:
	case PCI_DEVICE_ID_LSI_CUTLASS_53:
5014 5015
		instance->instancet = &megasas_instance_template_fusion;
		break;
5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031
	case PCI_DEVICE_ID_LSI_SAS1078R:
	case PCI_DEVICE_ID_LSI_SAS1078DE:
		instance->instancet = &megasas_instance_template_ppc;
		break;
	case PCI_DEVICE_ID_LSI_SAS1078GEN2:
	case PCI_DEVICE_ID_LSI_SAS0079GEN2:
		instance->instancet = &megasas_instance_template_gen2;
		break;
	case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
	case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
		instance->instancet = &megasas_instance_template_skinny;
		break;
	case PCI_DEVICE_ID_LSI_SAS1064R:
	case PCI_DEVICE_ID_DELL_PERC5:
	default:
		instance->instancet = &megasas_instance_template_xscale;
5032
		instance->allow_fw_scan = 1;
5033 5034 5035
		break;
	}

5036 5037 5038 5039 5040 5041
	if (megasas_transition_to_ready(instance, 0)) {
		atomic_set(&instance->fw_reset_no_pci_access, 1);
		instance->instancet->adp_reset
			(instance, instance->reg_set);
		atomic_set(&instance->fw_reset_no_pci_access, 0);
		dev_info(&instance->pdev->dev,
5042
			"FW restarted successfully from %s!\n",
5043 5044 5045 5046 5047 5048 5049 5050
			__func__);

		/*waitting for about 30 second before retry*/
		ssleep(30);

		if (megasas_transition_to_ready(instance, 0))
			goto fail_ready_state;
	}
5051

5052 5053 5054 5055 5056
	/*
	 * MSI-X host index 0 is common for all adapter.
	 * It is used for all MPT based Adapters.
	 */
	instance->reply_post_host_index_addr[0] =
5057
		(u32 __iomem *)((u8 __iomem *)instance->reg_set +
5058 5059
		MPI2_REPLY_POST_HOST_INDEX_OFFSET);

5060 5061 5062
	/* Check if MSI-X is supported while in ready state */
	msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
		       0x4000000) >> 0x1a;
5063
	if (msix_enable && !msix_disable) {
5064 5065
		scratch_pad_2 = readl
			(&instance->reg_set->outbound_scratch_pad_2);
5066
		/* Check max MSI-X vectors */
5067 5068 5069 5070 5071 5072 5073 5074 5075
		if (fusion) {
			if (fusion->adapter_type == THUNDERBOLT_SERIES) { /* Thunderbolt Series*/
				instance->msix_vectors = (scratch_pad_2
					& MR_MAX_REPLY_QUEUES_OFFSET) + 1;
				fw_msix_count = instance->msix_vectors;
			} else { /* Invader series supports more than 8 MSI-x vectors*/
				instance->msix_vectors = ((scratch_pad_2
					& MR_MAX_REPLY_QUEUES_EXT_OFFSET)
					>> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
5076 5077 5078
				if (rdpq_enable)
					instance->is_rdpq = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ?
								1 : 0;
5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090
				fw_msix_count = instance->msix_vectors;
				/* Save 1-15 reply post index address to local memory
				 * Index 0 is already saved from reg offset
				 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
				 */
				for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
					instance->reply_post_host_index_addr[loop] =
						(u32 __iomem *)
						((u8 __iomem *)instance->reg_set +
						MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
						+ (loop * 0x10));
				}
5091 5092 5093 5094
			}
			if (msix_vectors)
				instance->msix_vectors = min(msix_vectors,
					instance->msix_vectors);
5095
		} else /* MFI adapters */
5096 5097 5098 5099 5100 5101
			instance->msix_vectors = 1;
		/* Don't bother allocating more MSI-X vectors than cpus */
		instance->msix_vectors = min(instance->msix_vectors,
					     (unsigned int)num_online_cpus());
		for (i = 0; i < instance->msix_vectors; i++)
			instance->msixentry[i].entry = i;
5102 5103
		i = pci_enable_msix_range(instance->pdev, instance->msixentry,
					  1, instance->msix_vectors);
5104
		if (i > 0)
5105 5106
			instance->msix_vectors = i;
		else
5107 5108
			instance->msix_vectors = 0;
	}
5109

5110 5111 5112 5113 5114
	dev_info(&instance->pdev->dev,
		"firmware supports msix\t: (%d)", fw_msix_count);
	dev_info(&instance->pdev->dev,
		"current msix/online cpus\t: (%d/%d)\n",
		instance->msix_vectors, (unsigned int)num_online_cpus());
5115 5116
	dev_info(&instance->pdev->dev,
		"RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
5117

5118 5119 5120
	tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
		(unsigned long)instance);

5121 5122 5123 5124
	if (instance->msix_vectors ?
		megasas_setup_irqs_msix(instance, 1) :
		megasas_setup_irqs_ioapic(instance))
		goto fail_setup_irqs;
5125

5126 5127 5128 5129 5130 5131 5132 5133 5134 5135 5136
	instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info),
				GFP_KERNEL);
	if (instance->ctrl_info == NULL)
		goto fail_init_adapter;

	/*
	 * Below are default value for legacy Firmware.
	 * non-fusion based controllers
	 */
	instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
	instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5137 5138
	/* Get operational params, sge flags, send init cmd to controller */
	if (instance->instancet->init_adapter(instance))
5139
		goto fail_init_adapter;
5140

5141

5142
	instance->instancet->enable_intr(instance);
5143

5144
	dev_err(&instance->pdev->dev, "INIT adapter done\n");
5145

5146 5147
	megasas_setup_jbod_map(instance);

5148
	/** for passthrough
5149 5150 5151
	 * the following function will get the PD LIST.
	 */
	memset(instance->pd_list, 0,
5152
		(MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5153
	if (megasas_get_pd_list(instance) < 0) {
5154
		dev_err(&instance->pdev->dev, "failed to get PD list\n");
5155
		goto fail_get_pd_list;
5156
	}
5157

5158
	memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5159 5160 5161
	if (megasas_ld_list_query(instance,
				  MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
		megasas_get_ld_list(instance);
5162

5163 5164 5165 5166 5167 5168 5169 5170 5171
	/*
	 * Compute the max allowed sectors per IO: The controller info has two
	 * limits on max sectors. Driver should use the minimum of these two.
	 *
	 * 1 << stripe_sz_ops.min = max sectors per strip
	 *
	 * Note that older firmwares ( < FW ver 30) didn't report information
	 * to calculate max_sectors_1. So the number ended up as zero always.
	 */
5172
	tmp_sectors = 0;
5173
	ctrl_info = instance->ctrl_info;
5174

5175 5176 5177
	max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
		le16_to_cpu(ctrl_info->max_strips_per_io);
	max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
5178

5179
	tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
5180

5181 5182 5183 5184 5185 5186 5187 5188 5189
	instance->mpio = ctrl_info->adapterOperations2.mpio;
	instance->UnevenSpanSupport =
		ctrl_info->adapterOperations2.supportUnevenSpans;
	if (instance->UnevenSpanSupport) {
		struct fusion_context *fusion = instance->ctrl_context;
		if (MR_ValidateMapInfo(instance))
			fusion->fast_path_io = 1;
		else
			fusion->fast_path_io = 0;
5190

5191 5192
	}
	if (ctrl_info->host_interface.SRIOV) {
5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205
		instance->requestorId = ctrl_info->iov.requestorId;
		if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
			if (!ctrl_info->adapterOperations2.activePassive)
			    instance->PlasmaFW111 = 1;

			dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
			    instance->PlasmaFW111 ? "1.11" : "new");

			if (instance->PlasmaFW111) {
			    iovPtr = (struct IOV_111 *)
				((unsigned char *)ctrl_info + IOV_111_OFFSET);
			    instance->requestorId = iovPtr->requestorId;
			}
5206
		}
5207 5208
		dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
			instance->requestorId);
5209 5210 5211 5212 5213 5214 5215
	}

	instance->crash_dump_fw_support =
		ctrl_info->adapterOperations3.supportCrashDump;
	instance->crash_dump_drv_support =
		(instance->crash_dump_fw_support &&
		instance->crash_dump_buf);
5216
	if (instance->crash_dump_drv_support)
5217 5218 5219
		megasas_set_crash_dump_params(instance,
			MR_CRASH_BUF_TURN_OFF);

5220
	else {
5221 5222 5223 5224 5225 5226
		if (instance->crash_dump_buf)
			pci_free_consistent(instance->pdev,
				CRASH_DMA_BUF_SIZE,
				instance->crash_dump_buf,
				instance->crash_dump_h);
		instance->crash_dump_buf = NULL;
5227
	}
5228

5229 5230 5231 5232 5233 5234 5235 5236 5237 5238 5239

	dev_info(&instance->pdev->dev,
		"pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
		le16_to_cpu(ctrl_info->pci.vendor_id),
		le16_to_cpu(ctrl_info->pci.device_id),
		le16_to_cpu(ctrl_info->pci.sub_vendor_id),
		le16_to_cpu(ctrl_info->pci.sub_device_id));
	dev_info(&instance->pdev->dev, "unevenspan support	: %s\n",
		instance->UnevenSpanSupport ? "yes" : "no");
	dev_info(&instance->pdev->dev, "firmware crash dump	: %s\n",
		instance->crash_dump_drv_support ? "yes" : "no");
5240 5241
	dev_info(&instance->pdev->dev, "jbod sync map		: %s\n",
		instance->use_seqnum_jbod_fp ? "yes" : "no");
5242 5243


5244
	instance->max_sectors_per_req = instance->max_num_sge *
5245
						SGE_BUFFER_SIZE / 512;
5246 5247
	if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
		instance->max_sectors_per_req = tmp_sectors;
5248

5249 5250 5251 5252 5253 5254 5255 5256
	/* Check for valid throttlequeuedepth module parameter */
	if (throttlequeuedepth &&
			throttlequeuedepth <= instance->max_scsi_cmds)
		instance->throttlequeuedepth = throttlequeuedepth;
	else
		instance->throttlequeuedepth =
				MEGASAS_THROTTLE_QUEUE_DEPTH;

5257

5258 5259 5260 5261 5262 5263 5264 5265 5266 5267 5268
	/* Launch SR-IOV heartbeat timer */
	if (instance->requestorId) {
		if (!megasas_sriov_start_heartbeat(instance, 1))
			megasas_start_timer(instance,
					    &instance->sriov_heartbeat_timer,
					    megasas_sriov_heartbeat_handler,
					    MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
		else
			instance->skip_heartbeat_timer_del = 1;
	}

5269 5270
	return 0;

5271 5272
fail_get_pd_list:
	instance->instancet->disable_intr(instance);
5273
fail_init_adapter:
5274 5275 5276 5277 5278
	megasas_destroy_irqs(instance);
fail_setup_irqs:
	if (instance->msix_vectors)
		pci_disable_msix(instance->pdev);
	instance->msix_vectors = 0;
5279
fail_ready_state:
5280 5281
	kfree(instance->ctrl_info);
	instance->ctrl_info = NULL;
5282 5283 5284
	iounmap(instance->reg_set);

      fail_ioremap:
5285
	pci_release_selected_regions(instance->pdev, instance->bar);
5286 5287 5288 5289 5290 5291

	return -EINVAL;
}

/**
 * megasas_release_mfi -	Reverses the FW initialization
G
Geert Uytterhoeven 已提交
5292
 * @instance:			Adapter soft state
5293 5294 5295
 */
static void megasas_release_mfi(struct megasas_instance *instance)
{
5296
	u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
5297

5298 5299
	if (instance->reply_queue)
		pci_free_consistent(instance->pdev, reply_q_sz,
5300 5301 5302 5303 5304 5305
			    instance->reply_queue, instance->reply_queue_h);

	megasas_free_cmds(instance);

	iounmap(instance->reg_set);

5306
	pci_release_selected_regions(instance->pdev, instance->bar);
5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336 5337 5338 5339 5340 5341 5342 5343 5344 5345 5346 5347 5348 5349 5350 5351
}

/**
 * megasas_get_seq_num -	Gets latest event sequence numbers
 * @instance:			Adapter soft state
 * @eli:			FW event log sequence numbers information
 *
 * FW maintains a log of all events in a non-volatile area. Upper layers would
 * usually find out the latest sequence number of the events, the seq number at
 * the boot etc. They would "read" all the events below the latest seq number
 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
 * number), they would subsribe to AEN (asynchronous event notification) and
 * wait for the events to happen.
 */
static int
megasas_get_seq_num(struct megasas_instance *instance,
		    struct megasas_evt_log_info *eli)
{
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;
	struct megasas_evt_log_info *el_info;
	dma_addr_t el_info_h = 0;

	cmd = megasas_get_cmd(instance);

	if (!cmd) {
		return -ENOMEM;
	}

	dcmd = &cmd->frame->dcmd;
	el_info = pci_alloc_consistent(instance->pdev,
				       sizeof(struct megasas_evt_log_info),
				       &el_info_h);

	if (!el_info) {
		megasas_return_cmd(instance, cmd);
		return -ENOMEM;
	}

	memset(el_info, 0, sizeof(*el_info));
	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);

	dcmd->cmd = MFI_CMD_DCMD;
	dcmd->cmd_status = 0x0;
	dcmd->sge_count = 1;
5352
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
5353
	dcmd->timeout = 0;
5354
	dcmd->pad_0 = 0;
5355 5356 5357 5358
	dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
	dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
5359

5360 5361
	if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) ==
		DCMD_SUCCESS) {
5362 5363 5364
		/*
		 * Copy the data back into callers buffer
		 */
5365 5366 5367 5368 5369
		eli->newest_seq_num = el_info->newest_seq_num;
		eli->oldest_seq_num = el_info->oldest_seq_num;
		eli->clear_seq_num = el_info->clear_seq_num;
		eli->shutdown_seq_num = el_info->shutdown_seq_num;
		eli->boot_seq_num = el_info->boot_seq_num;
5370 5371 5372
	} else
		dev_err(&instance->pdev->dev, "DCMD failed "
			"from %s\n", __func__);
5373 5374 5375 5376

	pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
			    el_info, el_info_h);

5377
	megasas_return_cmd(instance, cmd);
5378 5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 5394 5395 5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410 5411 5412 5413 5414 5415 5416 5417

	return 0;
}

/**
 * megasas_register_aen -	Registers for asynchronous event notification
 * @instance:			Adapter soft state
 * @seq_num:			The starting sequence number
 * @class_locale:		Class of the event
 *
 * This function subscribes for AEN for events beyond the @seq_num. It requests
 * to be notified if and only if the event is of type @class_locale
 */
static int
megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
		     u32 class_locale_word)
{
	int ret_val;
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;
	union megasas_evt_class_locale curr_aen;
	union megasas_evt_class_locale prev_aen;

	/*
	 * If there an AEN pending already (aen_cmd), check if the
	 * class_locale of that pending AEN is inclusive of the new
	 * AEN request we currently have. If it is, then we don't have
	 * to do anything. In other words, whichever events the current
	 * AEN request is subscribing to, have already been subscribed
	 * to.
	 *
	 * If the old_cmd is _not_ inclusive, then we have to abort
	 * that command, form a class_locale that is superset of both
	 * old and current and re-issue to the FW
	 */

	curr_aen.word = class_locale_word;

	if (instance->aen_cmd) {

5418 5419
		prev_aen.word =
			le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431

		/*
		 * A class whose enum value is smaller is inclusive of all
		 * higher values. If a PROGRESS (= -1) was previously
		 * registered, then a new registration requests for higher
		 * classes need not be sent to FW. They are automatically
		 * included.
		 *
		 * Locale numbers don't have such hierarchy. They are bitmap
		 * values
		 */
		if ((prev_aen.members.class <= curr_aen.members.class) &&
5432
		    !((prev_aen.members.locale & curr_aen.members.locale) ^
5433 5434 5435 5436 5437 5438 5439
		      curr_aen.members.locale)) {
			/*
			 * Previously issued event registration includes
			 * current request. Nothing to do.
			 */
			return 0;
		} else {
5440
			curr_aen.members.locale |= prev_aen.members.locale;
5441 5442 5443 5444 5445 5446 5447

			if (prev_aen.members.class < curr_aen.members.class)
				curr_aen.members.class = prev_aen.members.class;

			instance->aen_cmd->abort_aen = 1;
			ret_val = megasas_issue_blocked_abort_cmd(instance,
								  instance->
5448
								  aen_cmd, 30);
5449 5450

			if (ret_val) {
5451
				dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
5452 5453 5454 5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474
				       "previous AEN command\n");
				return ret_val;
			}
		}
	}

	cmd = megasas_get_cmd(instance);

	if (!cmd)
		return -ENOMEM;

	dcmd = &cmd->frame->dcmd;

	memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));

	/*
	 * Prepare DCMD for aen registration
	 */
	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);

	dcmd->cmd = MFI_CMD_DCMD;
	dcmd->cmd_status = 0x0;
	dcmd->sge_count = 1;
5475
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
5476
	dcmd->timeout = 0;
5477
	dcmd->pad_0 = 0;
5478 5479 5480
	dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
	dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
	dcmd->mbox.w[0] = cpu_to_le32(seq_num);
5481
	instance->last_seq_num = seq_num;
5482 5483 5484
	dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
5485

5486 5487 5488 5489 5490
	if (instance->aen_cmd != NULL) {
		megasas_return_cmd(instance, cmd);
		return 0;
	}

5491 5492 5493 5494 5495 5496 5497 5498 5499 5500
	/*
	 * Store reference to the cmd used to register for AEN. When an
	 * application wants us to register for AEN, we have to abort this
	 * cmd and re-register with a new EVENT LOCALE supplied by that app
	 */
	instance->aen_cmd = cmd;

	/*
	 * Issue the aen registration frame
	 */
5501
	instance->instancet->issue_dcmd(instance, cmd);
5502 5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525 5526 5527 5528 5529

	return 0;
}

/**
 * megasas_start_aen -	Subscribes to AEN during driver load time
 * @instance:		Adapter soft state
 */
static int megasas_start_aen(struct megasas_instance *instance)
{
	struct megasas_evt_log_info eli;
	union megasas_evt_class_locale class_locale;

	/*
	 * Get the latest sequence number from FW
	 */
	memset(&eli, 0, sizeof(eli));

	if (megasas_get_seq_num(instance, &eli))
		return -1;

	/*
	 * Register AEN with FW for latest sequence number plus 1
	 */
	class_locale.members.reserved = 0;
	class_locale.members.locale = MR_EVT_LOCALE_ALL;
	class_locale.members.class = MR_EVT_CLASS_DEBUG;

5530
	return megasas_register_aen(instance,
5531
			le32_to_cpu(eli.newest_seq_num) + 1,
5532
			class_locale.word);
5533 5534 5535 5536 5537 5538 5539 5540 5541 5542 5543 5544 5545 5546 5547
}

/**
 * megasas_io_attach -	Attaches this driver to SCSI mid-layer
 * @instance:		Adapter soft state
 */
static int megasas_io_attach(struct megasas_instance *instance)
{
	struct Scsi_Host *host = instance->host;

	/*
	 * Export parameters required by SCSI mid-layer
	 */
	host->irq = instance->pdev->irq;
	host->unique_id = instance->unique_id;
5548
	host->can_queue = instance->max_scsi_cmds;
5549 5550
	host->this_id = instance->init_id;
	host->sg_tablesize = instance->max_num_sge;
5551 5552 5553 5554

	if (instance->fw_support_ieee)
		instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;

5555 5556 5557 5558 5559 5560 5561 5562 5563 5564 5565 5566 5567 5568
	/*
	 * Check if the module parameter value for max_sectors can be used
	 */
	if (max_sectors && max_sectors < instance->max_sectors_per_req)
		instance->max_sectors_per_req = max_sectors;
	else {
		if (max_sectors) {
			if (((instance->pdev->device ==
				PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
				(instance->pdev->device ==
				PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
				(max_sectors <= MEGASAS_MAX_SECTORS)) {
				instance->max_sectors_per_req = max_sectors;
			} else {
5569
			dev_info(&instance->pdev->dev, "max_sectors should be > 0"
5570 5571 5572 5573 5574 5575
				"and <= %d (or < 1MB for GEN2 controller)\n",
				instance->max_sectors_per_req);
			}
		}
	}

5576
	host->max_sectors = instance->max_sectors_per_req;
5577
	host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
5578 5579 5580
	host->max_channel = MEGASAS_MAX_CHANNELS - 1;
	host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
	host->max_lun = MEGASAS_MAX_LUN;
5581
	host->max_cmd_len = 16;
5582

5583
	/* Fusion only supports host reset */
5584
	if (instance->ctrl_context) {
5585 5586
		host->hostt->eh_device_reset_handler = NULL;
		host->hostt->eh_bus_reset_handler = NULL;
5587 5588
		host->hostt->eh_target_reset_handler = megasas_reset_target_fusion;
		host->hostt->eh_abort_handler = megasas_task_abort_fusion;
5589 5590
	}

5591 5592 5593 5594
	/*
	 * Notify the mid-layer about the new controller
	 */
	if (scsi_add_host(host, &instance->pdev->dev)) {
5595 5596 5597
		dev_err(&instance->pdev->dev,
			"Failed to add host from %s %d\n",
			__func__, __LINE__);
5598 5599 5600 5601 5602 5603
		return -ENODEV;
	}

	return 0;
}

5604 5605 5606 5607
static int
megasas_set_dma_mask(struct pci_dev *pdev)
{
	/*
5608
	 * All our controllers are capable of performing 64-bit DMA
5609 5610
	 */
	if (IS_DMA64) {
5611
		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
5612

5613
			if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5614 5615 5616
				goto fail_set_dma_mask;
		}
	} else {
5617
		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5618 5619
			goto fail_set_dma_mask;
	}
5620 5621 5622 5623 5624 5625 5626 5627 5628 5629 5630 5631 5632
	/*
	 * Ensure that all data structures are allocated in 32-bit
	 * memory.
	 */
	if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
		/* Try 32bit DMA mask and 32 bit Consistent dma mask */
		if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
			&& !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
			dev_info(&pdev->dev, "set 32bit DMA mask"
				"and 32 bit consistent mask\n");
		else
			goto fail_set_dma_mask;
	}
5633

5634 5635 5636 5637 5638 5639
	return 0;

fail_set_dma_mask:
	return 1;
}

5640 5641 5642
/**
 * megasas_probe_one -	PCI hotplug entry point
 * @pdev:		PCI device structure
5643
 * @id:			PCI ids of supported hotplugged adapter
5644
 */
5645 5646
static int megasas_probe_one(struct pci_dev *pdev,
			     const struct pci_device_id *id)
5647
{
5648
	int rval, pos;
5649 5650
	struct Scsi_Host *host;
	struct megasas_instance *instance;
5651
	u16 control = 0;
5652
	struct fusion_context *fusion = NULL;
5653 5654 5655 5656 5657

	/* Reset MSI-X in the kdump kernel */
	if (reset_devices) {
		pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
		if (pos) {
5658
			pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
5659 5660 5661 5662
					     &control);
			if (control & PCI_MSIX_FLAGS_ENABLE) {
				dev_info(&pdev->dev, "resetting MSI-X\n");
				pci_write_config_word(pdev,
5663
						      pos + PCI_MSIX_FLAGS,
5664 5665 5666 5667 5668
						      control &
						      ~PCI_MSIX_FLAGS_ENABLE);
			}
		}
	}
5669 5670 5671 5672

	/*
	 * PCI prepping: enable device set bus mastering and dma mask
	 */
5673
	rval = pci_enable_device_mem(pdev);
5674 5675 5676 5677 5678 5679 5680

	if (rval) {
		return rval;
	}

	pci_set_master(pdev);

5681 5682
	if (megasas_set_dma_mask(pdev))
		goto fail_set_dma_mask;
5683 5684 5685 5686 5687

	host = scsi_host_alloc(&megasas_template,
			       sizeof(struct megasas_instance));

	if (!host) {
5688
		dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
5689 5690 5691 5692 5693
		goto fail_alloc_instance;
	}

	instance = (struct megasas_instance *)host->hostdata;
	memset(instance, 0, sizeof(*instance));
5694
	atomic_set(&instance->fw_reset_no_pci_access, 0);
5695
	instance->pdev = pdev;
5696

5697 5698
	switch (instance->pdev->device) {
	case PCI_DEVICE_ID_LSI_FUSION:
5699
	case PCI_DEVICE_ID_LSI_PLASMA:
5700
	case PCI_DEVICE_ID_LSI_INVADER:
5701
	case PCI_DEVICE_ID_LSI_FURY:
5702 5703
	case PCI_DEVICE_ID_LSI_INTRUDER:
	case PCI_DEVICE_ID_LSI_INTRUDER_24:
5704 5705
	case PCI_DEVICE_ID_LSI_CUTLASS_52:
	case PCI_DEVICE_ID_LSI_CUTLASS_53:
5706
	{
5707 5708 5709 5710
		instance->ctrl_context_pages =
			get_order(sizeof(struct fusion_context));
		instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL,
				instance->ctrl_context_pages);
5711
		if (!instance->ctrl_context) {
5712
			dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate "
5713 5714 5715 5716
			       "memory for Fusion context info\n");
			goto fail_alloc_dma_buf;
		}
		fusion = instance->ctrl_context;
5717 5718
		memset(fusion, 0,
			((1 << PAGE_SHIFT) << instance->ctrl_context_pages));
5719 5720 5721 5722 5723
		if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
			(instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA))
			fusion->adapter_type = THUNDERBOLT_SERIES;
		else
			fusion->adapter_type = INVADER_SERIES;
5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735
	}
	break;
	default: /* For all other supported controllers */

		instance->producer =
			pci_alloc_consistent(pdev, sizeof(u32),
					     &instance->producer_h);
		instance->consumer =
			pci_alloc_consistent(pdev, sizeof(u32),
					     &instance->consumer_h);

		if (!instance->producer || !instance->consumer) {
5736
			dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate"
5737 5738 5739
			       "memory for producer, consumer\n");
			goto fail_alloc_dma_buf;
		}
5740

5741 5742 5743
		*instance->producer = 0;
		*instance->consumer = 0;
		break;
5744 5745
	}

5746 5747 5748 5749 5750 5751 5752
	instance->system_info_buf = pci_zalloc_consistent(pdev,
					sizeof(struct MR_DRV_SYSTEM_INFO),
					&instance->system_info_h);

	if (!instance->system_info_buf)
		dev_info(&instance->pdev->dev, "Can't allocate system info buffer\n");

5753 5754 5755 5756 5757 5758 5759 5760 5761 5762 5763 5764 5765 5766
	/* Crash dump feature related initialisation*/
	instance->drv_buf_index = 0;
	instance->drv_buf_alloc = 0;
	instance->crash_dump_fw_support = 0;
	instance->crash_dump_app_support = 0;
	instance->fw_crash_state = UNAVAILABLE;
	spin_lock_init(&instance->crashdump_lock);
	instance->crash_dump_buf = NULL;

	if (!reset_devices)
		instance->crash_dump_buf = pci_alloc_consistent(pdev,
						CRASH_DMA_BUF_SIZE,
						&instance->crash_dump_h);
	if (!instance->crash_dump_buf)
5767
		dev_err(&pdev->dev, "Can't allocate Firmware "
5768 5769
			"crash dump DMA buffer\n");

5770
	megasas_poll_wait_aen = 0;
5771
	instance->flag_ieee = 0;
5772
	instance->ev = NULL;
5773
	instance->issuepend_done = 1;
5774
	atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5775
	instance->is_imr = 0;
5776 5777 5778 5779 5780 5781 5782

	instance->evt_detail = pci_alloc_consistent(pdev,
						    sizeof(struct
							   megasas_evt_detail),
						    &instance->evt_detail_h);

	if (!instance->evt_detail) {
5783
		dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate memory for "
5784 5785 5786 5787
		       "event detail structure\n");
		goto fail_alloc_dma_buf;
	}

5788 5789 5790 5791 5792 5793
	instance->pd_info = pci_alloc_consistent(pdev,
		sizeof(struct MR_PD_INFO), &instance->pd_info_h);

	if (!instance->pd_info)
		dev_err(&instance->pdev->dev, "Failed to alloc mem for pd_info\n");

5794 5795 5796 5797
	/*
	 * Initialize locks and queues
	 */
	INIT_LIST_HEAD(&instance->cmd_pool);
5798
	INIT_LIST_HEAD(&instance->internal_reset_pending_q);
5799

5800 5801
	atomic_set(&instance->fw_outstanding,0);

5802 5803 5804
	init_waitqueue_head(&instance->int_cmd_wait_q);
	init_waitqueue_head(&instance->abort_cmd_wait_q);

5805
	spin_lock_init(&instance->mfi_pool_lock);
5806
	spin_lock_init(&instance->hba_lock);
5807
	spin_lock_init(&instance->completion_lock);
5808

5809
	mutex_init(&instance->reset_mutex);
5810
	mutex_init(&instance->hba_mutex);
5811 5812 5813 5814 5815 5816 5817

	/*
	 * Initialize PCI related and misc parameters
	 */
	instance->host = host;
	instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
	instance->init_id = MEGASAS_DEFAULT_INIT_ID;
5818
	instance->ctrl_info = NULL;
5819

5820

5821
	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5822
		(instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
5823
		instance->flag_ieee = 1;
5824

5825
	megasas_dbg_lvl = 0;
5826
	instance->flag = 0;
5827
	instance->unload = 1;
5828
	instance->last_time = 0;
5829
	instance->disableOnlineCtrlReset = 1;
5830
	instance->UnevenSpanSupport = 0;
5831

5832
	if (instance->ctrl_context) {
5833
		INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
5834 5835
		INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
	} else
5836
		INIT_WORK(&instance->work_init, process_fw_state_change_wq);
5837

5838 5839 5840 5841 5842 5843
	/*
	 * Initialize MFI Firmware
	 */
	if (megasas_init_fw(instance))
		goto fail_init_mfi;

5844 5845 5846 5847 5848 5849
	if (instance->requestorId) {
		if (instance->PlasmaFW111) {
			instance->vf_affiliation_111 =
				pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111),
						     &instance->vf_affiliation_111_h);
			if (!instance->vf_affiliation_111)
5850
				dev_warn(&pdev->dev, "Can't allocate "
5851 5852 5853 5854 5855 5856 5857 5858
				       "memory for VF affiliation buffer\n");
		} else {
			instance->vf_affiliation =
				pci_alloc_consistent(pdev,
						     (MAX_LOGICAL_DRIVES + 1) *
						     sizeof(struct MR_LD_VF_AFFILIATION),
						     &instance->vf_affiliation_h);
			if (!instance->vf_affiliation)
5859
				dev_warn(&pdev->dev, "Can't allocate "
5860 5861 5862 5863
				       "memory for VF affiliation buffer\n");
		}
	}

5864 5865 5866 5867 5868 5869 5870 5871 5872 5873 5874 5875 5876
	/*
	 * Store instance in PCI softstate
	 */
	pci_set_drvdata(pdev, instance);

	/*
	 * Add this controller to megasas_mgmt_info structure so that it
	 * can be exported to management applications
	 */
	megasas_mgmt_info.count++;
	megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
	megasas_mgmt_info.max_index++;

5877 5878 5879 5880 5881 5882 5883
	/*
	 * Register with SCSI mid-layer
	 */
	if (megasas_io_attach(instance))
		goto fail_io_attach;

	instance->unload = 0;
5884 5885 5886 5887
	/*
	 * Trigger SCSI to scan our drives
	 */
	scsi_scan_host(host);
5888

5889 5890 5891 5892
	/*
	 * Initiate AEN (Asynchronous Event Notification)
	 */
	if (megasas_start_aen(instance)) {
5893
		dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
5894 5895 5896
		goto fail_start_aen;
	}

5897 5898 5899 5900
	/* Get current SR-IOV LD/VF affiliation */
	if (instance->requestorId)
		megasas_get_ld_vf_affiliation(instance, 1);

5901 5902
	return 0;

5903 5904
fail_start_aen:
fail_io_attach:
5905 5906 5907 5908
	megasas_mgmt_info.count--;
	megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
	megasas_mgmt_info.max_index--;

5909
	instance->instancet->disable_intr(instance);
5910 5911
	megasas_destroy_irqs(instance);

5912
	if (instance->ctrl_context)
5913 5914 5915
		megasas_release_fusion(instance);
	else
		megasas_release_mfi(instance);
5916
	if (instance->msix_vectors)
5917
		pci_disable_msix(instance->pdev);
5918
fail_init_mfi:
5919
fail_alloc_dma_buf:
5920 5921 5922 5923 5924
	if (instance->evt_detail)
		pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
				    instance->evt_detail,
				    instance->evt_detail_h);

5925 5926 5927 5928
	if (instance->pd_info)
		pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
					instance->pd_info,
					instance->pd_info_h);
5929
	if (instance->producer)
5930 5931 5932 5933 5934 5935 5936
		pci_free_consistent(pdev, sizeof(u32), instance->producer,
				    instance->producer_h);
	if (instance->consumer)
		pci_free_consistent(pdev, sizeof(u32), instance->consumer,
				    instance->consumer_h);
	scsi_host_put(host);

5937 5938
fail_alloc_instance:
fail_set_dma_mask:
5939 5940 5941 5942 5943 5944 5945 5946 5947 5948 5949 5950 5951 5952
	pci_disable_device(pdev);

	return -ENODEV;
}

/**
 * megasas_flush_cache -	Requests FW to flush all its caches
 * @instance:			Adapter soft state
 */
static void megasas_flush_cache(struct megasas_instance *instance)
{
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;

5953
	if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
5954 5955
		return;

5956 5957 5958 5959 5960 5961 5962 5963 5964 5965 5966 5967
	cmd = megasas_get_cmd(instance);

	if (!cmd)
		return;

	dcmd = &cmd->frame->dcmd;

	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);

	dcmd->cmd = MFI_CMD_DCMD;
	dcmd->cmd_status = 0x0;
	dcmd->sge_count = 0;
5968
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
5969
	dcmd->timeout = 0;
5970
	dcmd->pad_0 = 0;
5971
	dcmd->data_xfer_len = 0;
5972
	dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
5973 5974
	dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;

5975 5976 5977 5978 5979 5980
	if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
			!= DCMD_SUCCESS) {
		dev_err(&instance->pdev->dev,
			"return from %s %d\n", __func__, __LINE__);
		return;
	}
5981

5982
	megasas_return_cmd(instance, cmd);
5983 5984 5985 5986 5987
}

/**
 * megasas_shutdown_controller -	Instructs FW to shutdown the controller
 * @instance:				Adapter soft state
5988
 * @opcode:				Shutdown/Hibernate
5989
 */
5990 5991
static void megasas_shutdown_controller(struct megasas_instance *instance,
					u32 opcode)
5992 5993 5994 5995
{
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;

5996
	if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
5997 5998
		return;

5999 6000 6001 6002 6003 6004
	cmd = megasas_get_cmd(instance);

	if (!cmd)
		return;

	if (instance->aen_cmd)
6005
		megasas_issue_blocked_abort_cmd(instance,
6006
			instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
6007 6008
	if (instance->map_update_cmd)
		megasas_issue_blocked_abort_cmd(instance,
6009
			instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
6010 6011
	if (instance->jbod_seq_cmd)
		megasas_issue_blocked_abort_cmd(instance,
6012
			instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
6013

6014 6015 6016 6017 6018 6019 6020
	dcmd = &cmd->frame->dcmd;

	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);

	dcmd->cmd = MFI_CMD_DCMD;
	dcmd->cmd_status = 0x0;
	dcmd->sge_count = 0;
6021
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6022
	dcmd->timeout = 0;
6023
	dcmd->pad_0 = 0;
6024
	dcmd->data_xfer_len = 0;
6025
	dcmd->opcode = cpu_to_le32(opcode);
6026

6027 6028 6029 6030 6031 6032
	if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
			!= DCMD_SUCCESS) {
		dev_err(&instance->pdev->dev,
			"return from %s %d\n", __func__, __LINE__);
		return;
	}
6033

6034
	megasas_return_cmd(instance, cmd);
6035 6036
}

6037
#ifdef CONFIG_PM
6038
/**
6039 6040
 * megasas_suspend -	driver suspend entry point
 * @pdev:		PCI device structure
6041 6042
 * @state:		PCI power state to suspend routine
 */
6043
static int
6044 6045 6046 6047 6048 6049 6050
megasas_suspend(struct pci_dev *pdev, pm_message_t state)
{
	struct Scsi_Host *host;
	struct megasas_instance *instance;

	instance = pci_get_drvdata(pdev);
	host = instance->host;
6051
	instance->unload = 1;
6052

6053 6054 6055 6056
	/* Shutdown SR-IOV heartbeat timer */
	if (instance->requestorId && !instance->skip_heartbeat_timer_del)
		del_timer_sync(&instance->sriov_heartbeat_timer);

6057 6058
	megasas_flush_cache(instance);
	megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
6059 6060 6061 6062

	/* cancel the delayed work if this work still in queue */
	if (instance->ev != NULL) {
		struct megasas_aen_event *ev = instance->ev;
6063
		cancel_delayed_work_sync(&ev->hotplug_work);
6064 6065 6066
		instance->ev = NULL;
	}

6067 6068 6069
	tasklet_kill(&instance->isr_tasklet);

	pci_set_drvdata(instance->pdev, instance);
6070
	instance->instancet->disable_intr(instance);
6071

6072 6073
	megasas_destroy_irqs(instance);

6074
	if (instance->msix_vectors)
6075
		pci_disable_msix(instance->pdev);
6076 6077 6078 6079 6080 6081 6082 6083 6084 6085 6086 6087 6088

	pci_save_state(pdev);
	pci_disable_device(pdev);

	pci_set_power_state(pdev, pci_choose_state(pdev, state));

	return 0;
}

/**
 * megasas_resume-      driver resume entry point
 * @pdev:               PCI device structure
 */
6089
static int
6090 6091
megasas_resume(struct pci_dev *pdev)
{
6092
	int rval;
6093 6094 6095 6096 6097 6098 6099 6100 6101 6102 6103 6104
	struct Scsi_Host *host;
	struct megasas_instance *instance;

	instance = pci_get_drvdata(pdev);
	host = instance->host;
	pci_set_power_state(pdev, PCI_D0);
	pci_enable_wake(pdev, PCI_D0, 0);
	pci_restore_state(pdev);

	/*
	 * PCI prepping: enable device set bus mastering and dma mask
	 */
6105
	rval = pci_enable_device_mem(pdev);
6106 6107

	if (rval) {
6108
		dev_err(&pdev->dev, "Enable device failed\n");
6109 6110 6111 6112 6113 6114 6115 6116 6117 6118 6119 6120 6121 6122 6123 6124 6125
		return rval;
	}

	pci_set_master(pdev);

	if (megasas_set_dma_mask(pdev))
		goto fail_set_dma_mask;

	/*
	 * Initialize MFI Firmware
	 */

	atomic_set(&instance->fw_outstanding, 0);

	/*
	 * We expect the FW state to be READY
	 */
6126
	if (megasas_transition_to_ready(instance, 0))
6127 6128
		goto fail_ready_state;

6129
	/* Now re-enable MSI-X */
6130
	if (instance->msix_vectors &&
6131 6132
	    pci_enable_msix_exact(instance->pdev, instance->msixentry,
				  instance->msix_vectors))
6133
		goto fail_reenable_msix;
6134

6135
	if (instance->ctrl_context) {
6136 6137 6138 6139 6140 6141 6142 6143
		megasas_reset_reply_desc(instance);
		if (megasas_ioc_init_fusion(instance)) {
			megasas_free_cmds(instance);
			megasas_free_cmds_fusion(instance);
			goto fail_init_mfi;
		}
		if (!megasas_get_map_info(instance))
			megasas_sync_map_info(instance);
6144
	} else {
6145 6146 6147 6148 6149
		*instance->producer = 0;
		*instance->consumer = 0;
		if (megasas_issue_init_mfi(instance))
			goto fail_init_mfi;
	}
6150

6151 6152
	tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
		     (unsigned long)instance);
6153

6154 6155 6156 6157
	if (instance->msix_vectors ?
			megasas_setup_irqs_msix(instance, 0) :
			megasas_setup_irqs_ioapic(instance))
		goto fail_init_mfi;
6158

6159 6160 6161 6162 6163 6164 6165
	/* Re-launch SR-IOV heartbeat timer */
	if (instance->requestorId) {
		if (!megasas_sriov_start_heartbeat(instance, 0))
			megasas_start_timer(instance,
					    &instance->sriov_heartbeat_timer,
					    megasas_sriov_heartbeat_handler,
					    MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
6166
		else {
6167
			instance->skip_heartbeat_timer_del = 1;
6168 6169
			goto fail_init_mfi;
		}
6170 6171
	}

6172
	instance->instancet->enable_intr(instance);
6173
	megasas_setup_jbod_map(instance);
6174 6175
	instance->unload = 0;

6176 6177 6178 6179
	/*
	 * Initiate AEN (Asynchronous Event Notification)
	 */
	if (megasas_start_aen(instance))
6180
		dev_err(&instance->pdev->dev, "Start AEN failed\n");
6181

6182 6183 6184 6185 6186 6187 6188 6189
	return 0;

fail_init_mfi:
	if (instance->evt_detail)
		pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
				instance->evt_detail,
				instance->evt_detail_h);

6190 6191 6192 6193
	if (instance->pd_info)
		pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
					instance->pd_info,
					instance->pd_info_h);
6194 6195 6196 6197 6198 6199 6200 6201 6202 6203
	if (instance->producer)
		pci_free_consistent(pdev, sizeof(u32), instance->producer,
				instance->producer_h);
	if (instance->consumer)
		pci_free_consistent(pdev, sizeof(u32), instance->consumer,
				instance->consumer_h);
	scsi_host_put(host);

fail_set_dma_mask:
fail_ready_state:
6204
fail_reenable_msix:
6205 6206 6207 6208 6209

	pci_disable_device(pdev);

	return -ENODEV;
}
6210 6211 6212 6213
#else
#define megasas_suspend	NULL
#define megasas_resume	NULL
#endif
6214

6215 6216 6217 6218
/**
 * megasas_detach_one -	PCI hot"un"plug entry point
 * @pdev:		PCI device structure
 */
6219
static void megasas_detach_one(struct pci_dev *pdev)
6220 6221 6222 6223
{
	int i;
	struct Scsi_Host *host;
	struct megasas_instance *instance;
6224
	struct fusion_context *fusion;
6225
	u32 pd_seq_map_sz;
6226 6227

	instance = pci_get_drvdata(pdev);
6228
	instance->unload = 1;
6229
	host = instance->host;
6230
	fusion = instance->ctrl_context;
6231

6232 6233 6234 6235
	/* Shutdown SR-IOV heartbeat timer */
	if (instance->requestorId && !instance->skip_heartbeat_timer_del)
		del_timer_sync(&instance->sriov_heartbeat_timer);

6236 6237
	if (instance->fw_crash_state != UNAVAILABLE)
		megasas_free_host_crash_buffer(instance);
6238 6239
	scsi_remove_host(instance->host);
	megasas_flush_cache(instance);
6240
	megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
6241 6242 6243 6244

	/* cancel the delayed work if this work still in queue*/
	if (instance->ev != NULL) {
		struct megasas_aen_event *ev = instance->ev;
6245
		cancel_delayed_work_sync(&ev->hotplug_work);
6246 6247 6248
		instance->ev = NULL;
	}

6249 6250 6251
	/* cancel all wait events */
	wake_up_all(&instance->int_cmd_wait_q);

6252
	tasklet_kill(&instance->isr_tasklet);
6253 6254 6255 6256 6257 6258 6259 6260 6261 6262 6263 6264 6265 6266

	/*
	 * Take the instance off the instance array. Note that we will not
	 * decrement the max_index. We let this array be sparse array
	 */
	for (i = 0; i < megasas_mgmt_info.max_index; i++) {
		if (megasas_mgmt_info.instance[i] == instance) {
			megasas_mgmt_info.count--;
			megasas_mgmt_info.instance[i] = NULL;

			break;
		}
	}

6267
	instance->instancet->disable_intr(instance);
6268

6269 6270
	megasas_destroy_irqs(instance);

6271
	if (instance->msix_vectors)
6272
		pci_disable_msix(instance->pdev);
6273

6274
	if (instance->ctrl_context) {
6275
		megasas_release_fusion(instance);
6276 6277 6278
			pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
				(sizeof(struct MR_PD_CFG_SEQ) *
					(MAX_PHYSICAL_DEVICES - 1));
6279
		for (i = 0; i < 2 ; i++) {
6280 6281
			if (fusion->ld_map[i])
				dma_free_coherent(&instance->pdev->dev,
6282
						  fusion->max_map_sz,
6283
						  fusion->ld_map[i],
6284 6285 6286 6287
						  fusion->ld_map_phys[i]);
			if (fusion->ld_drv_map[i])
				free_pages((ulong)fusion->ld_drv_map[i],
					fusion->drv_map_pages);
6288 6289 6290 6291 6292
				if (fusion->pd_seq_sync)
					dma_free_coherent(&instance->pdev->dev,
						pd_seq_map_sz,
						fusion->pd_seq_sync[i],
						fusion->pd_seq_phys[i]);
6293 6294 6295
		}
		free_pages((ulong)instance->ctrl_context,
			instance->ctrl_context_pages);
6296
	} else {
6297 6298 6299 6300 6301 6302 6303 6304
		megasas_release_mfi(instance);
		pci_free_consistent(pdev, sizeof(u32),
				    instance->producer,
				    instance->producer_h);
		pci_free_consistent(pdev, sizeof(u32),
				    instance->consumer,
				    instance->consumer_h);
	}
6305

6306 6307
	kfree(instance->ctrl_info);

6308 6309 6310
	if (instance->evt_detail)
		pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
				instance->evt_detail, instance->evt_detail_h);
6311

6312 6313 6314 6315
	if (instance->pd_info)
		pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
					instance->pd_info,
					instance->pd_info_h);
6316 6317 6318 6319 6320 6321 6322 6323 6324 6325 6326 6327 6328 6329 6330 6331 6332
	if (instance->vf_affiliation)
		pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
				    sizeof(struct MR_LD_VF_AFFILIATION),
				    instance->vf_affiliation,
				    instance->vf_affiliation_h);

	if (instance->vf_affiliation_111)
		pci_free_consistent(pdev,
				    sizeof(struct MR_LD_VF_AFFILIATION_111),
				    instance->vf_affiliation_111,
				    instance->vf_affiliation_111_h);

	if (instance->hb_host_mem)
		pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM),
				    instance->hb_host_mem,
				    instance->hb_host_mem_h);

6333 6334 6335 6336
	if (instance->crash_dump_buf)
		pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
			    instance->crash_dump_buf, instance->crash_dump_h);

6337 6338 6339 6340
	if (instance->system_info_buf)
		pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO),
				    instance->system_info_buf, instance->system_info_h);

6341 6342 6343 6344 6345 6346 6347 6348 6349 6350 6351 6352
	scsi_host_put(host);

	pci_disable_device(pdev);
}

/**
 * megasas_shutdown -	Shutdown entry point
 * @device:		Generic device structure
 */
static void megasas_shutdown(struct pci_dev *pdev)
{
	struct megasas_instance *instance = pci_get_drvdata(pdev);
6353

6354
	instance->unload = 1;
6355
	megasas_flush_cache(instance);
6356
	megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
6357
	instance->instancet->disable_intr(instance);
6358 6359
	megasas_destroy_irqs(instance);

6360
	if (instance->msix_vectors)
6361
		pci_disable_msix(instance->pdev);
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
}

/**
 * megasas_mgmt_open -	char node "open" entry point
 */
static int megasas_mgmt_open(struct inode *inode, struct file *filep)
{
	/*
	 * Allow only those users with admin rights
	 */
	if (!capable(CAP_SYS_ADMIN))
		return -EACCES;

	return 0;
}

/**
 * megasas_mgmt_fasync -	Async notifier registration from applications
 *
 * This function adds the calling process to a driver global queue. When an
 * event occurs, SIGIO will be sent to all processes in this queue.
 */
static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
{
	int rc;

6388
	mutex_lock(&megasas_async_queue_mutex);
6389 6390 6391

	rc = fasync_helper(fd, filep, mode, &megasas_async_queue);

6392
	mutex_unlock(&megasas_async_queue_mutex);
6393 6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404

	if (rc >= 0) {
		/* For sanity check when we get ioctl */
		filep->private_data = filep;
		return 0;
	}

	printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);

	return rc;
}

6405 6406 6407 6408 6409 6410 6411
/**
 * megasas_mgmt_poll -  char node "poll" entry point
 * */
static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
{
	unsigned int mask;
	unsigned long flags;
6412

6413 6414 6415
	poll_wait(file, &megasas_poll_wait, wait);
	spin_lock_irqsave(&poll_aen_lock, flags);
	if (megasas_poll_wait_aen)
6416
		mask = (POLLIN | POLLRDNORM);
6417 6418
	else
		mask = 0;
6419
	megasas_poll_wait_aen = 0;
6420 6421 6422 6423
	spin_unlock_irqrestore(&poll_aen_lock, flags);
	return mask;
}

6424 6425 6426 6427 6428 6429
/*
 * megasas_set_crash_dump_params_ioctl:
 *		Send CRASH_DUMP_MODE DCMD to all controllers
 * @cmd:	MFI command frame
 */

6430
static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
6431 6432 6433 6434 6435 6436 6437 6438 6439 6440
{
	struct megasas_instance *local_instance;
	int i, error = 0;
	int crash_support;

	crash_support = cmd->frame->dcmd.mbox.w[0];

	for (i = 0; i < megasas_mgmt_info.max_index; i++) {
		local_instance = megasas_mgmt_info.instance[i];
		if (local_instance && local_instance->crash_dump_drv_support) {
6441
			if ((atomic_read(&local_instance->adprecovery) ==
6442 6443 6444 6445 6446 6447 6448 6449 6450 6451 6452 6453 6454 6455 6456 6457 6458 6459 6460 6461
				MEGASAS_HBA_OPERATIONAL) &&
				!megasas_set_crash_dump_params(local_instance,
					crash_support)) {
				local_instance->crash_dump_app_support =
					crash_support;
				dev_info(&local_instance->pdev->dev,
					"Application firmware crash "
					"dump mode set success\n");
				error = 0;
			} else {
				dev_info(&local_instance->pdev->dev,
					"Application firmware crash "
					"dump mode set failed\n");
				error = -1;
			}
		}
	}
	return error;
}

6462 6463 6464 6465 6466 6467 6468 6469 6470 6471 6472 6473 6474 6475 6476 6477 6478
/**
 * megasas_mgmt_fw_ioctl -	Issues management ioctls to FW
 * @instance:			Adapter soft state
 * @argp:			User's ioctl packet
 */
static int
megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
		      struct megasas_iocpacket __user * user_ioc,
		      struct megasas_iocpacket *ioc)
{
	struct megasas_sge32 *kern_sge32;
	struct megasas_cmd *cmd;
	void *kbuff_arr[MAX_IOCTL_SGE];
	dma_addr_t buf_handle = 0;
	int error = 0, i;
	void *sense = NULL;
	dma_addr_t sense_handle;
6479
	unsigned long *sense_ptr;
6480 6481 6482 6483

	memset(kbuff_arr, 0, sizeof(kbuff_arr));

	if (ioc->sge_count > MAX_IOCTL_SGE) {
6484
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] >  max limit [%d]\n",
6485 6486 6487 6488 6489 6490
		       ioc->sge_count, MAX_IOCTL_SGE);
		return -EINVAL;
	}

	cmd = megasas_get_cmd(instance);
	if (!cmd) {
6491
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
6492 6493 6494 6495 6496 6497 6498 6499 6500 6501
		return -ENOMEM;
	}

	/*
	 * User's IOCTL packet has 2 frames (maximum). Copy those two
	 * frames into our cmd's frames. cmd->frame's context will get
	 * overwritten when we copy from user's frames. So set that value
	 * alone separately
	 */
	memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
6502
	cmd->frame->hdr.context = cpu_to_le32(cmd->index);
6503
	cmd->frame->hdr.pad_0 = 0;
6504 6505 6506
	cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
					       MFI_FRAME_SGL64 |
					       MFI_FRAME_SENSE64));
6507

6508 6509 6510 6511 6512 6513
	if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
		error = megasas_set_crash_dump_params_ioctl(cmd);
		megasas_return_cmd(instance, cmd);
		return error;
	}

6514 6515 6516 6517 6518 6519 6520 6521 6522 6523 6524 6525 6526 6527 6528
	/*
	 * The management interface between applications and the fw uses
	 * MFI frames. E.g, RAID configuration changes, LD property changes
	 * etc are accomplishes through different kinds of MFI frames. The
	 * driver needs to care only about substituting user buffers with
	 * kernel buffers in SGLs. The location of SGL is embedded in the
	 * struct iocpacket itself.
	 */
	kern_sge32 = (struct megasas_sge32 *)
	    ((unsigned long)cmd->frame + ioc->sgl_off);

	/*
	 * For each user buffer, create a mirror buffer and copy in
	 */
	for (i = 0; i < ioc->sge_count; i++) {
6529 6530 6531
		if (!ioc->sgl[i].iov_len)
			continue;

6532
		kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
6533
						    ioc->sgl[i].iov_len,
6534
						    &buf_handle, GFP_KERNEL);
6535
		if (!kbuff_arr[i]) {
6536 6537
			dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
			       "kernel SGL buffer for IOCTL\n");
6538 6539 6540 6541 6542 6543 6544 6545
			error = -ENOMEM;
			goto out;
		}

		/*
		 * We don't change the dma_coherent_mask, so
		 * pci_alloc_consistent only returns 32bit addresses
		 */
6546 6547
		kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
		kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
6548 6549 6550 6551 6552 6553 6554 6555 6556 6557 6558 6559 6560

		/*
		 * We created a kernel buffer corresponding to the
		 * user buffer. Now copy in from the user buffer
		 */
		if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
				   (u32) (ioc->sgl[i].iov_len))) {
			error = -EFAULT;
			goto out;
		}
	}

	if (ioc->sense_len) {
6561 6562
		sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
					     &sense_handle, GFP_KERNEL);
6563 6564 6565 6566 6567 6568
		if (!sense) {
			error = -ENOMEM;
			goto out;
		}

		sense_ptr =
6569
		(unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
6570
		*sense_ptr = cpu_to_le32(sense_handle);
6571 6572 6573 6574 6575 6576 6577
	}

	/*
	 * Set the sync_cmd flag so that the ISR knows not to complete this
	 * cmd to the SCSI mid-layer
	 */
	cmd->sync_cmd = 1;
6578 6579 6580 6581 6582 6583 6584 6585 6586
	if (megasas_issue_blocked_cmd(instance, cmd, 0) == DCMD_NOT_FIRED) {
		cmd->sync_cmd = 0;
		dev_err(&instance->pdev->dev,
			"return -EBUSY from %s %d opcode 0x%x cmd->cmd_status_drv 0x%x\n",
			__func__, __LINE__, cmd->frame->dcmd.opcode,
			cmd->cmd_status_drv);
		return -EBUSY;
	}

6587 6588
	cmd->sync_cmd = 0;

6589 6590 6591 6592 6593
	if (instance->unload == 1) {
		dev_info(&instance->pdev->dev, "Driver unload is in progress "
			"don't submit data to application\n");
		goto out;
	}
6594 6595 6596 6597 6598 6599 6600 6601 6602 6603 6604 6605 6606 6607 6608 6609
	/*
	 * copy out the kernel buffers to user buffers
	 */
	for (i = 0; i < ioc->sge_count; i++) {
		if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
				 ioc->sgl[i].iov_len)) {
			error = -EFAULT;
			goto out;
		}
	}

	/*
	 * copy out the sense
	 */
	if (ioc->sense_len) {
		/*
6610
		 * sense_ptr points to the location that has the user
6611 6612
		 * sense buffer address
		 */
6613 6614
		sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
				ioc->sense_off);
6615

6616 6617
		if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
				 sense, ioc->sense_len)) {
6618
			dev_err(&instance->pdev->dev, "Failed to copy out to user "
6619
					"sense data\n");
6620 6621 6622 6623 6624 6625 6626 6627 6628 6629
			error = -EFAULT;
			goto out;
		}
	}

	/*
	 * copy the status codes returned by the fw
	 */
	if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
			 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
6630
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
6631 6632 6633
		error = -EFAULT;
	}

6634
out:
6635
	if (sense) {
6636
		dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
6637 6638 6639
				    sense, sense_handle);
	}

6640 6641 6642
	for (i = 0; i < ioc->sge_count; i++) {
		if (kbuff_arr[i])
			dma_free_coherent(&instance->pdev->dev,
6643
					  le32_to_cpu(kern_sge32[i].length),
6644
					  kbuff_arr[i],
6645
					  le32_to_cpu(kern_sge32[i].phys_addr));
6646
			kbuff_arr[i] = NULL;
6647 6648
	}

6649
	megasas_return_cmd(instance, cmd);
6650 6651 6652 6653 6654 6655 6656 6657 6658 6659
	return error;
}

static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
{
	struct megasas_iocpacket __user *user_ioc =
	    (struct megasas_iocpacket __user *)arg;
	struct megasas_iocpacket *ioc;
	struct megasas_instance *instance;
	int error;
6660 6661 6662
	int i;
	unsigned long flags;
	u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6663 6664 6665 6666 6667 6668 6669 6670 6671 6672 6673 6674 6675 6676 6677 6678

	ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
	if (!ioc)
		return -ENOMEM;

	if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
		error = -EFAULT;
		goto out_kfree_ioc;
	}

	instance = megasas_lookup_instance(ioc->host_no);
	if (!instance) {
		error = -ENODEV;
		goto out_kfree_ioc;
	}

6679 6680 6681 6682 6683 6684 6685 6686 6687 6688
	/* Adjust ioctl wait time for VF mode */
	if (instance->requestorId)
		wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;

	/* Block ioctls in VF mode */
	if (instance->requestorId && !allow_vf_ioctls) {
		error = -ENODEV;
		goto out_kfree_ioc;
	}

6689
	if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
6690
		dev_err(&instance->pdev->dev, "Controller in crit error\n");
6691 6692 6693 6694 6695 6696 6697 6698 6699
		error = -ENODEV;
		goto out_kfree_ioc;
	}

	if (instance->unload == 1) {
		error = -ENODEV;
		goto out_kfree_ioc;
	}

6700 6701 6702 6703
	if (down_interruptible(&instance->ioctl_sem)) {
		error = -ERESTARTSYS;
		goto out_kfree_ioc;
	}
6704 6705 6706 6707

	for (i = 0; i < wait_time; i++) {

		spin_lock_irqsave(&instance->hba_lock, flags);
6708
		if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
6709 6710 6711 6712 6713 6714
			spin_unlock_irqrestore(&instance->hba_lock, flags);
			break;
		}
		spin_unlock_irqrestore(&instance->hba_lock, flags);

		if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6715
			dev_notice(&instance->pdev->dev, "waiting"
6716 6717 6718 6719 6720 6721 6722
				"for controller reset to finish\n");
		}

		msleep(1000);
	}

	spin_lock_irqsave(&instance->hba_lock, flags);
6723
	if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
6724 6725
		spin_unlock_irqrestore(&instance->hba_lock, flags);

6726
		dev_err(&instance->pdev->dev, "timed out while"
6727 6728
			"waiting for HBA to recover\n");
		error = -ENODEV;
6729
		goto out_up;
6730 6731 6732
	}
	spin_unlock_irqrestore(&instance->hba_lock, flags);

6733
	error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
6734
out_up:
6735 6736
	up(&instance->ioctl_sem);

6737
out_kfree_ioc:
6738 6739 6740 6741 6742 6743 6744 6745 6746
	kfree(ioc);
	return error;
}

static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
{
	struct megasas_instance *instance;
	struct megasas_aen aen;
	int error;
6747 6748 6749
	int i;
	unsigned long flags;
	u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6750 6751 6752 6753 6754 6755 6756 6757 6758 6759 6760 6761 6762 6763 6764

	if (file->private_data != file) {
		printk(KERN_DEBUG "megasas: fasync_helper was not "
		       "called first\n");
		return -EINVAL;
	}

	if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
		return -EFAULT;

	instance = megasas_lookup_instance(aen.host_no);

	if (!instance)
		return -ENODEV;

6765
	if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
6766
		return -ENODEV;
6767 6768 6769 6770 6771 6772
	}

	if (instance->unload == 1) {
		return -ENODEV;
	}

6773 6774 6775
	for (i = 0; i < wait_time; i++) {

		spin_lock_irqsave(&instance->hba_lock, flags);
6776
		if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
6777 6778 6779 6780 6781 6782 6783 6784
			spin_unlock_irqrestore(&instance->hba_lock,
						flags);
			break;
		}

		spin_unlock_irqrestore(&instance->hba_lock, flags);

		if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6785
			dev_notice(&instance->pdev->dev, "waiting for"
6786 6787 6788 6789 6790 6791 6792
				"controller reset to finish\n");
		}

		msleep(1000);
	}

	spin_lock_irqsave(&instance->hba_lock, flags);
6793
	if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
6794
		spin_unlock_irqrestore(&instance->hba_lock, flags);
6795 6796
		dev_err(&instance->pdev->dev, "timed out while waiting"
				"for HBA to recover\n");
6797 6798 6799 6800
		return -ENODEV;
	}
	spin_unlock_irqrestore(&instance->hba_lock, flags);

6801
	mutex_lock(&instance->reset_mutex);
6802 6803
	error = megasas_register_aen(instance, aen.seq_num,
				     aen.class_locale_word);
6804
	mutex_unlock(&instance->reset_mutex);
6805 6806 6807 6808 6809 6810 6811 6812 6813 6814 6815 6816 6817 6818 6819 6820 6821 6822 6823 6824 6825 6826 6827 6828 6829 6830 6831 6832 6833
	return error;
}

/**
 * megasas_mgmt_ioctl -	char node ioctl entry point
 */
static long
megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	switch (cmd) {
	case MEGASAS_IOC_FIRMWARE:
		return megasas_mgmt_ioctl_fw(file, arg);

	case MEGASAS_IOC_GET_AEN:
		return megasas_mgmt_ioctl_aen(file, arg);
	}

	return -ENOTTY;
}

#ifdef CONFIG_COMPAT
static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
{
	struct compat_megasas_iocpacket __user *cioc =
	    (struct compat_megasas_iocpacket __user *)arg;
	struct megasas_iocpacket __user *ioc =
	    compat_alloc_user_space(sizeof(struct megasas_iocpacket));
	int i;
	int error = 0;
6834
	compat_uptr_t ptr;
6835 6836 6837
	unsigned long local_raw_ptr;
	u32 local_sense_off;
	u32 local_sense_len;
6838

6839 6840
	if (clear_user(ioc, sizeof(*ioc)))
		return -EFAULT;
6841 6842 6843 6844 6845 6846 6847 6848 6849

	if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
	    copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
	    copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
	    copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
	    copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
	    copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
		return -EFAULT;

6850 6851 6852 6853 6854
	/*
	 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
	 * sense_len is not null, so prepare the 64bit value under
	 * the same condition.
	 */
6855 6856 6857 6858 6859 6860 6861
	if (get_user(local_raw_ptr, ioc->frame.raw) ||
		get_user(local_sense_off, &ioc->sense_off) ||
		get_user(local_sense_len, &ioc->sense_len))
		return -EFAULT;


	if (local_sense_len) {
6862
		void __user **sense_ioc_ptr =
6863
			(void __user **)((u8*)local_raw_ptr + local_sense_off);
6864 6865 6866 6867 6868 6869
		compat_uptr_t *sense_cioc_ptr =
			(compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
		if (get_user(ptr, sense_cioc_ptr) ||
		    put_user(compat_ptr(ptr), sense_ioc_ptr))
			return -EFAULT;
	}
6870

6871
	for (i = 0; i < MAX_IOCTL_SGE; i++) {
6872 6873 6874 6875 6876 6877 6878 6879 6880 6881 6882 6883 6884 6885 6886 6887 6888 6889 6890 6891 6892 6893
		if (get_user(ptr, &cioc->sgl[i].iov_base) ||
		    put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
		    copy_in_user(&ioc->sgl[i].iov_len,
				 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
			return -EFAULT;
	}

	error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);

	if (copy_in_user(&cioc->frame.hdr.cmd_status,
			 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
		printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
		return -EFAULT;
	}
	return error;
}

static long
megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
			  unsigned long arg)
{
	switch (cmd) {
6894 6895
	case MEGASAS_IOC_FIRMWARE32:
		return megasas_mgmt_compat_ioctl_fw(file, arg);
6896 6897 6898 6899 6900 6901 6902 6903 6904 6905 6906
	case MEGASAS_IOC_GET_AEN:
		return megasas_mgmt_ioctl_aen(file, arg);
	}

	return -ENOTTY;
}
#endif

/*
 * File operations structure for management interface
 */
6907
static const struct file_operations megasas_mgmt_fops = {
6908 6909 6910 6911
	.owner = THIS_MODULE,
	.open = megasas_mgmt_open,
	.fasync = megasas_mgmt_fasync,
	.unlocked_ioctl = megasas_mgmt_ioctl,
6912
	.poll = megasas_mgmt_poll,
6913 6914 6915
#ifdef CONFIG_COMPAT
	.compat_ioctl = megasas_mgmt_compat_ioctl,
#endif
6916
	.llseek = noop_llseek,
6917 6918 6919 6920 6921 6922 6923 6924 6925 6926
};

/*
 * PCI hotplug support registration structure
 */
static struct pci_driver megasas_pci_driver = {

	.name = "megaraid_sas",
	.id_table = megasas_pci_table,
	.probe = megasas_probe_one,
6927
	.remove = megasas_detach_one,
6928 6929
	.suspend = megasas_suspend,
	.resume = megasas_resume,
6930 6931 6932 6933 6934 6935 6936 6937 6938 6939 6940 6941 6942 6943
	.shutdown = megasas_shutdown,
};

/*
 * Sysfs driver attributes
 */
static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
{
	return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
			MEGASAS_VERSION);
}

static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);

6944 6945 6946 6947 6948 6949 6950 6951 6952
static ssize_t
megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
{
	return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
		MEGASAS_RELDATE);
}

static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, NULL);

6953 6954 6955 6956 6957 6958 6959 6960 6961
static ssize_t
megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
{
	return sprintf(buf, "%u\n", support_poll_for_event);
}

static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
			megasas_sysfs_show_support_poll_for_event, NULL);

6962 6963 6964 6965 6966 6967 6968 6969 6970
 static ssize_t
megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
{
	return sprintf(buf, "%u\n", support_device_change);
}

static DRIVER_ATTR(support_device_change, S_IRUGO,
			megasas_sysfs_show_support_device_change, NULL);

6971 6972 6973
static ssize_t
megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
{
6974
	return sprintf(buf, "%u\n", megasas_dbg_lvl);
6975 6976 6977 6978 6979 6980
}

static ssize_t
megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
{
	int retval = count;
6981 6982

	if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
6983 6984 6985 6986 6987 6988
		printk(KERN_ERR "megasas: could not set dbg_lvl\n");
		retval = -EINVAL;
	}
	return retval;
}

6989
static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
6990 6991
		megasas_sysfs_set_dbg_lvl);

6992 6993 6994 6995
static void
megasas_aen_polling(struct work_struct *work)
{
	struct megasas_aen_event *ev =
6996
		container_of(work, struct megasas_aen_event, hotplug_work.work);
6997 6998 6999 7000 7001
	struct megasas_instance *instance = ev->instance;
	union megasas_evt_class_locale class_locale;
	struct  Scsi_Host *host;
	struct  scsi_device *sdev1;
	u16     pd_index = 0;
7002
	u16	ld_index = 0;
7003
	int     i, j, doscan = 0;
7004
	u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
7005
	int error;
7006
	u8  dcmd_ret = DCMD_SUCCESS;
7007 7008 7009 7010 7011 7012

	if (!instance) {
		printk(KERN_ERR "invalid instance!\n");
		kfree(ev);
		return;
	}
7013 7014 7015 7016 7017 7018

	/* Adjust event workqueue thread wait time for VF mode */
	if (instance->requestorId)
		wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;

	/* Don't run the event workqueue thread if OCR is running */
7019
	mutex_lock(&instance->reset_mutex);
7020

7021 7022 7023
	instance->ev = NULL;
	host = instance->host;
	if (instance->evt_detail) {
7024
		megasas_decode_evt(instance);
7025

7026
		switch (le32_to_cpu(instance->evt_detail->code)) {
7027

7028
		case MR_EVT_PD_INSERTED:
7029
		case MR_EVT_PD_REMOVED:
7030
			dcmd_ret = megasas_get_pd_list(instance);
7031
			if (dcmd_ret == DCMD_SUCCESS)
7032
				doscan = SCAN_PD_CHANNEL;
7033 7034 7035
			break;

		case MR_EVT_LD_OFFLINE:
7036
		case MR_EVT_CFG_CLEARED:
7037 7038
		case MR_EVT_LD_DELETED:
		case MR_EVT_LD_CREATED:
7039
			if (!instance->requestorId ||
7040 7041 7042
				(instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0)))
				dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);

7043
			if (dcmd_ret == DCMD_SUCCESS)
7044 7045
				doscan = SCAN_VD_CHANNEL;

7046
			break;
7047

7048
		case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
7049
		case MR_EVT_FOREIGN_CFG_IMPORTED:
7050
		case MR_EVT_LD_STATE_CHANGE:
7051 7052
			dcmd_ret = megasas_get_pd_list(instance);

7053
			if (dcmd_ret != DCMD_SUCCESS)
7054 7055 7056 7057 7058 7059
				break;

			if (!instance->requestorId ||
				(instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0)))
				dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);

7060
			if (dcmd_ret != DCMD_SUCCESS)
7061 7062 7063 7064 7065
				break;

			doscan = SCAN_VD_CHANNEL | SCAN_PD_CHANNEL;
			dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
				instance->host->host_no);
7066
			break;
7067

7068
		case MR_EVT_CTRL_PROP_CHANGED:
7069 7070
				dcmd_ret = megasas_get_ctrl_info(instance);
				break;
7071 7072 7073 7074 7075
		default:
			doscan = 0;
			break;
		}
	} else {
7076
		dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
7077
		mutex_unlock(&instance->reset_mutex);
7078 7079 7080 7081
		kfree(ev);
		return;
	}

7082 7083 7084 7085 7086 7087 7088 7089 7090 7091 7092 7093 7094 7095 7096 7097 7098
	mutex_unlock(&instance->reset_mutex);

	if (doscan & SCAN_PD_CHANNEL) {
		for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
			for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
				pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
				sdev1 = scsi_device_lookup(host, i, j, 0);
				if (instance->pd_list[pd_index].driveState ==
							MR_PD_STATE_SYSTEM) {
					if (!sdev1)
						scsi_add_device(host, i, j, 0);
					else
						scsi_device_put(sdev1);
				} else {
					if (sdev1) {
						scsi_remove_device(sdev1);
						scsi_device_put(sdev1);
7099 7100 7101 7102
					}
				}
			}
		}
7103
	}
7104

7105 7106 7107 7108 7109 7110 7111 7112 7113 7114 7115 7116 7117 7118
	if (doscan & SCAN_VD_CHANNEL) {
		for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
			for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
				ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
				sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
				if (instance->ld_ids[ld_index] != 0xff) {
					if (!sdev1)
						scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
					else
						scsi_device_put(sdev1);
				} else {
					if (sdev1) {
						scsi_remove_device(sdev1);
						scsi_device_put(sdev1);
7119 7120 7121 7122
					}
				}
			}
		}
7123 7124
	}

7125
	if (dcmd_ret == DCMD_SUCCESS)
7126 7127 7128
		seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
	else
		seq_num = instance->last_seq_num;
7129 7130 7131 7132 7133

	/* Register AEN with FW for latest sequence number plus 1 */
	class_locale.members.reserved = 0;
	class_locale.members.locale = MR_EVT_LOCALE_ALL;
	class_locale.members.class = MR_EVT_CLASS_DEBUG;
7134 7135 7136 7137 7138 7139 7140

	if (instance->aen_cmd != NULL) {
		kfree(ev);
		return;
	}

	mutex_lock(&instance->reset_mutex);
7141 7142 7143
	error = megasas_register_aen(instance, seq_num,
					class_locale.word);
	if (error)
7144 7145
		dev_err(&instance->pdev->dev,
			"register aen failed error %x\n", error);
7146

7147
	mutex_unlock(&instance->reset_mutex);
7148 7149 7150
	kfree(ev);
}

7151 7152 7153 7154 7155 7156 7157 7158 7159 7160
/**
 * megasas_init - Driver load entry point
 */
static int __init megasas_init(void)
{
	int rval;

	/*
	 * Announce driver version and other information
	 */
7161
	pr_info("megasas: %s\n", MEGASAS_VERSION);
7162

7163 7164
	spin_lock_init(&poll_aen_lock);

7165
	support_poll_for_event = 2;
7166
	support_device_change = 1;
7167

7168 7169 7170 7171 7172 7173 7174 7175 7176 7177 7178 7179 7180 7181 7182 7183 7184
	memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));

	/*
	 * Register character device node
	 */
	rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);

	if (rval < 0) {
		printk(KERN_DEBUG "megasas: failed to open device node\n");
		return rval;
	}

	megasas_mgmt_majorno = rval;

	/*
	 * Register ourselves as PCI hotplug module
	 */
7185
	rval = pci_register_driver(&megasas_pci_driver);
7186 7187

	if (rval) {
7188
		printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
7189 7190 7191 7192 7193 7194 7195
		goto err_pcidrv;
	}

	rval = driver_create_file(&megasas_pci_driver.driver,
				  &driver_attr_version);
	if (rval)
		goto err_dcf_attr_ver;
7196

7197 7198 7199 7200 7201
	rval = driver_create_file(&megasas_pci_driver.driver,
				  &driver_attr_release_date);
	if (rval)
		goto err_dcf_rel_date;

7202 7203 7204 7205 7206
	rval = driver_create_file(&megasas_pci_driver.driver,
				&driver_attr_support_poll_for_event);
	if (rval)
		goto err_dcf_support_poll_for_event;

7207 7208 7209 7210
	rval = driver_create_file(&megasas_pci_driver.driver,
				  &driver_attr_dbg_lvl);
	if (rval)
		goto err_dcf_dbg_lvl;
7211 7212 7213 7214 7215
	rval = driver_create_file(&megasas_pci_driver.driver,
				&driver_attr_support_device_change);
	if (rval)
		goto err_dcf_support_device_change;

7216
	return rval;
7217

7218
err_dcf_support_device_change:
7219 7220
	driver_remove_file(&megasas_pci_driver.driver,
			   &driver_attr_dbg_lvl);
7221
err_dcf_dbg_lvl:
7222 7223 7224
	driver_remove_file(&megasas_pci_driver.driver,
			&driver_attr_support_poll_for_event);
err_dcf_support_poll_for_event:
7225 7226 7227
	driver_remove_file(&megasas_pci_driver.driver,
			   &driver_attr_release_date);
err_dcf_rel_date:
7228 7229 7230 7231 7232
	driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
err_dcf_attr_ver:
	pci_unregister_driver(&megasas_pci_driver);
err_pcidrv:
	unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
7233
	return rval;
7234 7235 7236 7237 7238 7239 7240
}

/**
 * megasas_exit - Driver unload entry point
 */
static void __exit megasas_exit(void)
{
7241 7242
	driver_remove_file(&megasas_pci_driver.driver,
			   &driver_attr_dbg_lvl);
7243 7244 7245 7246
	driver_remove_file(&megasas_pci_driver.driver,
			&driver_attr_support_poll_for_event);
	driver_remove_file(&megasas_pci_driver.driver,
			&driver_attr_support_device_change);
7247 7248
	driver_remove_file(&megasas_pci_driver.driver,
			   &driver_attr_release_date);
7249
	driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
7250 7251 7252 7253 7254 7255 7256

	pci_unregister_driver(&megasas_pci_driver);
	unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
}

module_init(megasas_init);
module_exit(megasas_exit);