megaraid_sas_base.c 194.9 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 2458
 * 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)
{
	int i;
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 2465
	u32 fw_state;
	u8 kill_adapter_flag;
2466 2467


2468
	if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2469 2470 2471 2472 2473 2474 2475

		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);

2476
		dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2477 2478
		for (i = 0; i < wait_time; i++) {
			msleep(1000);
2479
			if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2480 2481 2482
				break;
		}

2483
		if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2484
			dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2485
			atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2486 2487 2488
			return FAILED;
		}

2489
		reset_index = 0;
2490
		while (!list_empty(&clist_local)) {
2491
			reset_cmd = list_entry((&clist_local)->next,
2492 2493 2494 2495
						struct megasas_cmd, list);
			list_del_init(&reset_cmd->list);
			if (reset_cmd->scmd) {
				reset_cmd->scmd->result = DID_RESET << 16;
2496
				dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2497
					reset_index, reset_cmd,
2498
					reset_cmd->scmd->cmnd[0]);
2499 2500 2501 2502

				reset_cmd->scmd->scsi_done(reset_cmd->scmd);
				megasas_return_cmd(instance, reset_cmd);
			} else if (reset_cmd->sync_cmd) {
2503
				dev_notice(&instance->pdev->dev, "%p synch cmds"
2504 2505 2506
						"reset queue\n",
						reset_cmd);

2507
				reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
2508 2509 2510 2511
				instance->instancet->fire_cmd(instance,
						reset_cmd->frame_phys_addr,
						0, instance->reg_set);
			} else {
2512
				dev_notice(&instance->pdev->dev, "%p unexpected"
2513 2514 2515 2516 2517 2518 2519 2520
					"cmds lst\n",
					reset_cmd);
			}
			reset_index++;
		}

		return SUCCESS;
	}
2521

2522
	for (i = 0; i < resetwaittime; i++) {
2523 2524 2525
		int outstanding = atomic_read(&instance->fw_outstanding);

		if (!outstanding)
2526 2527 2528
			break;

		if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2529
			dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2530
			       "commands to complete\n",i,outstanding);
2531 2532 2533 2534 2535
			/*
			 * Call cmd completion routine. Cmd to be
			 * be completed directly without depending on isr.
			 */
			megasas_complete_cmd_dpc((unsigned long)instance);
2536 2537 2538 2539 2540
		}

		msleep(1000);
	}

2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560
	i = 0;
	kill_adapter_flag = 0;
	do {
		fw_state = instance->instancet->read_fw_status_reg(
					instance->reg_set) & MFI_STATE_MASK;
		if ((fw_state == MFI_STATE_FAULT) &&
			(instance->disableOnlineCtrlReset == 0)) {
			if (i == 3) {
				kill_adapter_flag = 2;
				break;
			}
			megasas_do_ocr(instance);
			kill_adapter_flag = 1;

			/* wait for 1 secs to let FW finish the pending cmds */
			msleep(1000);
		}
		i++;
	} while (i <= 3);

2561
	if (atomic_read(&instance->fw_outstanding) && !kill_adapter_flag) {
2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577
		if (instance->disableOnlineCtrlReset == 0) {
			megasas_do_ocr(instance);

			/* wait for 5 secs to let FW finish the pending cmds */
			for (i = 0; i < wait_time; i++) {
				int outstanding =
					atomic_read(&instance->fw_outstanding);
				if (!outstanding)
					return SUCCESS;
				msleep(1000);
			}
		}
	}

	if (atomic_read(&instance->fw_outstanding) ||
					(kill_adapter_flag == 2)) {
2578
		dev_notice(&instance->pdev->dev, "pending cmds after reset\n");
2579
		/*
2580 2581 2582
		 * Send signal to FW to stop processing any pending cmds.
		 * The controller will be taken offline by the OS now.
		 */
2583 2584 2585 2586 2587
		if ((instance->pdev->device ==
			PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
			(instance->pdev->device ==
			PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
			writel(MFI_STOP_ADP,
2588
				&instance->reg_set->doorbell);
2589 2590
		} else {
			writel(MFI_STOP_ADP,
2591
				&instance->reg_set->inbound_doorbell);
2592
		}
2593
		megasas_dump_pending_frames(instance);
2594
		atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2595 2596 2597
		return FAILED;
	}

2598
	dev_notice(&instance->pdev->dev, "no pending cmds after reset\n");
2599

2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617
	return SUCCESS;
}

/**
 * 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;

2618 2619
	scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
		 scmd->cmnd[0], scmd->retries);
2620

2621
	if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2622
		dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2623 2624 2625 2626 2627
		return FAILED;
	}

	ret_val = megasas_wait_for_outstanding(instance);
	if (ret_val == SUCCESS)
2628
		dev_notice(&instance->pdev->dev, "reset successful\n");
2629
	else
2630
		dev_err(&instance->pdev->dev, "failed to do reset\n");
2631 2632 2633 2634

	return ret_val;
}

2635 2636 2637 2638 2639 2640 2641 2642
/**
 * 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
2643
blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2644 2645 2646 2647 2648 2649
{
	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
2650
		return BLK_EH_NOT_HANDLED;
2651 2652
	}

2653
	instance = (struct megasas_instance *)scmd->device->host->hostdata;
2654 2655 2656 2657
	if (!(instance->flag & MEGASAS_FW_BUSY)) {
		/* FW is busy, throttle IO */
		spin_lock_irqsave(instance->host->host_lock, flags);

2658
		instance->host->can_queue = instance->throttlequeuedepth;
2659 2660 2661 2662 2663
		instance->last_time = jiffies;
		instance->flag |= MEGASAS_FW_BUSY;

		spin_unlock_irqrestore(instance->host->host_lock, flags);
	}
J
Jens Axboe 已提交
2664
	return BLK_EH_RESET_TIMER;
2665 2666
}

2667 2668 2669 2670 2671 2672 2673 2674
/**
 * megasas_reset_device -	Device reset handler entry point
 */
static int megasas_reset_device(struct scsi_cmnd *scmd)
{
	/*
	 * First wait for all commands to complete
	 */
2675
	return megasas_generic_reset(scmd);
2676 2677 2678 2679 2680 2681 2682 2683
}

/**
 * megasas_reset_bus_host -	Bus & host reset handler entry point
 */
static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
{
	int ret;
2684
	struct megasas_instance *instance;
2685

2686
	instance = (struct megasas_instance *)scmd->device->host->hostdata;
2687 2688

	/*
U
Uwe Zeisberger 已提交
2689
	 * First wait for all commands to complete
2690
	 */
2691
	if (instance->ctrl_context)
2692
		ret = megasas_reset_fusion(scmd->device->host, 1);
2693 2694
	else
		ret = megasas_generic_reset(scmd);
2695 2696 2697 2698

	return ret;
}

2699 2700
/**
 * megasas_bios_param - Returns disk geometry for a disk
2701
 * @sdev:		device handle
2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713
 * @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;
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 2742
	/* 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;
}

2743 2744
static void megasas_aen_polling(struct work_struct *work);

2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759
/**
 * 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)
{
2760
	unsigned long flags;
2761

2762 2763 2764
	/*
	 * Don't signal app if it is just an aborted previously registered aen
	 */
2765 2766 2767 2768 2769
	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);
2770
		kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2771
	}
2772 2773 2774 2775
	else
		cmd->abort_aen = 0;

	instance->aen_cmd = NULL;
2776

2777
	megasas_return_cmd(instance, cmd);
2778

2779 2780
	if ((instance->unload == 0) &&
		((instance->issuepend_done == 1))) {
2781
		struct megasas_aen_event *ev;
2782

2783 2784
		ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
		if (!ev) {
2785
			dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
2786 2787 2788
		} else {
			ev->instance = instance;
			instance->ev = ev;
2789 2790 2791
			INIT_DELAYED_WORK(&ev->hotplug_work,
					  megasas_aen_polling);
			schedule_delayed_work(&ev->hotplug_work, 0);
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 2841
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;

2842
	if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853
		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);
2854
	memcpy(buf, (void *)src_addr, size);
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 2913
	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;
2914

2915 2916 2917 2918 2919 2920 2921 2922 2923 2924
	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);
}

2925 2926 2927 2928 2929 2930 2931 2932 2933 2934
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));
}

2935 2936 2937 2938 2939 2940 2941 2942
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);
2943 2944
static DEVICE_ATTR(ldio_outstanding, S_IRUGO,
	megasas_ldio_outstanding_show, NULL);
2945 2946 2947 2948 2949 2950

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,
2951
	&dev_attr_ldio_outstanding,
2952 2953 2954
	NULL,
};

2955 2956 2957 2958 2959 2960
/*
 * Scsi host template for megaraid_sas driver
 */
static struct scsi_host_template megasas_template = {

	.module = THIS_MODULE,
2961
	.name = "Avago SAS based MegaRAID driver",
2962
	.proc_name = "megaraid_sas",
2963
	.slave_configure = megasas_slave_configure,
2964
	.slave_alloc = megasas_slave_alloc,
2965
	.slave_destroy = megasas_slave_destroy,
2966 2967 2968 2969
	.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,
2970
	.eh_timed_out = megasas_reset_timer,
2971
	.shost_attrs = megaraid_host_attrs,
2972
	.bios_param = megasas_bios_param,
2973
	.use_clustering = ENABLE_CLUSTERING,
2974
	.change_queue_depth = scsi_change_queue_depth,
2975
	.no_write_same = 1,
2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990
};

/**
 * 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)
{
2991
	cmd->cmd_status_drv = cmd->frame->io.cmd_status;
2992 2993 2994 2995 2996 2997 2998 2999
	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
 *
3000 3001
 * 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
3002 3003 3004 3005 3006 3007 3008 3009
 * 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;
3010
		cmd->cmd_status_drv = 0;
3011 3012 3013 3014 3015 3016 3017 3018
		wake_up(&instance->abort_cmd_wait_q);
	}
}

/**
 * megasas_complete_cmd -	Completes a command
 * @instance:			Adapter soft state
 * @cmd:			Command to be completed
3019
 * @alt_status:			If non-zero, use this value as status to
3020 3021 3022 3023
 *				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)
3024
 */
3025
void
3026 3027 3028 3029 3030
megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
		     u8 alt_status)
{
	int exception = 0;
	struct megasas_header *hdr = &cmd->frame->hdr;
3031
	unsigned long flags;
3032
	struct fusion_context *fusion = instance->ctrl_context;
3033
	u32 opcode, status;
3034

3035 3036 3037
	/* flag for the retry reset */
	cmd->retry_for_fw_reset = 0;

3038 3039
	if (cmd->scmd)
		cmd->scmd->SCp.ptr = NULL;
3040 3041

	switch (hdr->cmd) {
3042 3043 3044 3045 3046
	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. */
3047 3048 3049 3050
		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");
3051
		break;
3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075
	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) {

3076
			atomic_dec(&instance->fw_outstanding);
3077

3078
			scsi_dma_unmap(cmd->scmd);
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 3117
			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:
3118
			dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3119 3120 3121 3122 3123
			       hdr->cmd_status);
			cmd->scmd->result = DID_ERROR << 16;
			break;
		}

3124
		atomic_dec(&instance->fw_outstanding);
3125

3126
		scsi_dma_unmap(cmd->scmd);
3127 3128 3129 3130 3131 3132 3133 3134
		cmd->scmd->scsi_done(cmd->scmd);
		megasas_return_cmd(instance, cmd);

		break;

	case MFI_CMD_SMP:
	case MFI_CMD_STP:
	case MFI_CMD_DCMD:
3135
		opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3136
		/* Check for LD map update */
3137 3138
		if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
			&& (cmd->frame->dcmd.mbox.b[1] == 1)) {
3139
			fusion->fast_path_io = 0;
3140
			spin_lock_irqsave(instance->host->host_lock, flags);
3141
			instance->map_update_cmd = NULL;
3142 3143 3144
			if (cmd->frame->hdr.cmd_status != 0) {
				if (cmd->frame->hdr.cmd_status !=
				    MFI_STAT_NOT_FOUND)
3145
					dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3146 3147
					       cmd->frame->hdr.cmd_status);
				else {
3148
					megasas_return_cmd(instance, cmd);
3149 3150 3151 3152 3153 3154 3155
					spin_unlock_irqrestore(
						instance->host->host_lock,
						flags);
					break;
				}
			} else
				instance->map_id++;
3156
			megasas_return_cmd(instance, cmd);
3157 3158 3159 3160 3161 3162 3163

			/*
			 * Set fast path IO to ZERO.
			 * Validate Map will set proper value.
			 * Meanwhile all IOs will go as LD IO.
			 */
			if (MR_ValidateMapInfo(instance))
3164 3165 3166 3167 3168 3169 3170 3171
				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;
		}
3172 3173
		if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
		    opcode == MR_DCMD_CTRL_EVENT_GET) {
3174 3175 3176 3177
			spin_lock_irqsave(&poll_aen_lock, flags);
			megasas_poll_wait_aen = 0;
			spin_unlock_irqrestore(&poll_aen_lock, flags);
		}
3178

3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199
		/* 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;
		}

3200 3201 3202
		/*
		 * See if got an event notification
		 */
3203
		if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217
			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:
3218
		dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3219 3220 3221 3222 3223
		       hdr->cmd);
		break;
	}
}

3224 3225
/**
 * megasas_issue_pending_cmds_again -	issue all pending cmds
3226
 *					in FW again because of the fw reset
3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243
 * @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)) {
3244
		cmd = list_entry((&clist_local)->next,
3245 3246 3247 3248
					struct megasas_cmd, list);
		list_del_init(&cmd->list);

		if (cmd->sync_cmd || cmd->scmd) {
3249 3250
			dev_notice(&instance->pdev->dev, "command %p, %p:%d"
				"detected to be pending while HBA reset\n",
3251 3252 3253 3254 3255
					cmd, cmd->scmd, cmd->sync_cmd);

			cmd->retry_for_fw_reset++;

			if (cmd->retry_for_fw_reset == 3) {
3256
				dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3257 3258 3259
					"was tried multiple times during reset."
					"Shutting down the HBA\n",
					cmd, cmd->scmd, cmd->sync_cmd);
3260 3261
				instance->instancet->disable_intr(instance);
				atomic_set(&instance->fw_reset_no_pci_access, 1);
3262 3263 3264 3265 3266 3267 3268
				megaraid_sas_kill_hba(instance);
				return;
			}
		}

		if (cmd->sync_cmd == 1) {
			if (cmd->scmd) {
3269
				dev_notice(&instance->pdev->dev, "unexpected"
3270 3271
					"cmd attached to internal command!\n");
			}
3272
			dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3273 3274
						"on the internal reset queue,"
						"issue it again.\n", cmd);
3275
			cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
3276
			instance->instancet->fire_cmd(instance,
3277
							cmd->frame_phys_addr,
3278 3279
							0, instance->reg_set);
		} else if (cmd->scmd) {
3280
			dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3281
			"detected on the internal queue, issue again.\n",
3282
			cmd, cmd->scmd->cmnd[0]);
3283 3284 3285 3286 3287 3288

			atomic_inc(&instance->fw_outstanding);
			instance->instancet->fire_cmd(instance,
					cmd->frame_phys_addr,
					cmd->frame_count-1, instance->reg_set);
		} else {
3289
			dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3290 3291 3292 3293 3294 3295
				"internal reset defer list while re-issue!!\n",
				cmd);
		}
	}

	if (instance->aen_cmd) {
3296
		dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3297 3298
		megasas_return_cmd(instance, instance->aen_cmd);

3299
		instance->aen_cmd = NULL;
3300 3301 3302
	}

	/*
3303 3304
	 * Initiate AEN (Asynchronous Event Notification)
	 */
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 3330
	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;

3331
	defer_index = 0;
3332
	spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3333 3334 3335
	for (i = 0; i < max_cmd; i++) {
		cmd = instance->cmd_list[i];
		if (cmd->sync_cmd == 1 || cmd->scmd) {
3336
			dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3337 3338 3339 3340
					"on the defer queue as internal\n",
				defer_index, cmd, cmd->sync_cmd, cmd->scmd);

			if (!list_empty(&cmd->list)) {
3341
				dev_notice(&instance->pdev->dev, "ERROR while"
3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352
					" 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);
		}
	}
3353
	spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364
}


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;

3365
    if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3366
		dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3367
				atomic_read(&instance->adprecovery));
3368 3369 3370
		return ;
	}

3371
	if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3372
		dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3373 3374
					"state, restarting it...\n");

3375
		instance->instancet->disable_intr(instance);
3376 3377 3378 3379
		atomic_set(&instance->fw_outstanding, 0);

		atomic_set(&instance->fw_reset_no_pci_access, 1);
		instance->instancet->adp_reset(instance, instance->reg_set);
3380
		atomic_set(&instance->fw_reset_no_pci_access, 0);
3381

3382
		dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3383 3384
					"initiating next stage...\n");

3385
		dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3386 3387
					"state 2 starting...\n");

3388
		/* waiting for about 20 second before start the second init */
3389 3390 3391 3392
		for (wait = 0; wait < 30; wait++) {
			msleep(1000);
		}

3393
		if (megasas_transition_to_ready(instance, 1)) {
3394
			dev_notice(&instance->pdev->dev, "adapter not ready\n");
3395

3396
			atomic_set(&instance->fw_reset_no_pci_access, 1);
3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413
			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);
3414
		atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3415
		spin_unlock_irqrestore(&instance->hba_lock, flags);
3416
		instance->instancet->enable_intr(instance);
3417 3418 3419 3420 3421 3422

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

3423 3424 3425 3426
/**
 * megasas_deplete_reply_queue -	Processes all completed commands
 * @instance:				Adapter soft state
 * @alt_status:				Alternate status to be returned to
3427 3428
 *					SCSI mid-layer instead of the status
 *					returned by the FW
3429
 * Note: this must be called with hba lock held
3430
 */
3431
static int
3432 3433
megasas_deplete_reply_queue(struct megasas_instance *instance,
					u8 alt_status)
3434
{
3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445
	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) {
3446
		/* Hardware may not set outbound_intr_status in MSI-X mode */
3447
		if (!instance->msix_vectors)
3448
			return IRQ_NONE;
3449 3450 3451 3452 3453 3454 3455 3456 3457
	}

	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) {
3458
			dev_notice(&instance->pdev->dev, "fw state:%x\n",
3459 3460 3461 3462 3463
						fw_state);
		}

		if ((fw_state == MFI_STATE_FAULT) &&
				(instance->disableOnlineCtrlReset == 0)) {
3464
			dev_notice(&instance->pdev->dev, "wait adp restart\n");
3465 3466 3467 3468 3469 3470 3471 3472 3473

			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 =
3474
					cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3475 3476 3477
			}


3478
			instance->instancet->disable_intr(instance);
3479
			atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3480 3481 3482 3483 3484
			instance->issuepend_done = 0;

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

3485
			dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3486
					fw_state, atomic_read(&instance->adprecovery));
3487 3488 3489 3490 3491

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

		} else {
3492
			dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3493 3494 3495
				fw_state, instance->disableOnlineCtrlReset);
		}
	}
3496

3497
	tasklet_schedule(&instance->isr_tasklet);
3498 3499 3500 3501 3502
	return IRQ_HANDLED;
}
/**
 * megasas_isr - isr entry point
 */
3503
static irqreturn_t megasas_isr(int irq, void *devp)
3504
{
3505 3506
	struct megasas_irq_context *irq_context = devp;
	struct megasas_instance *instance = irq_context->instance;
3507
	unsigned long flags;
3508
	irqreturn_t rc;
3509

3510
	if (atomic_read(&instance->fw_reset_no_pci_access))
3511 3512 3513
		return IRQ_HANDLED;

	spin_lock_irqsave(&instance->hba_lock, flags);
3514
	rc = megasas_deplete_reply_queue(instance, DID_OK);
3515 3516 3517
	spin_unlock_irqrestore(&instance->hba_lock, flags);

	return rc;
3518 3519 3520 3521
}

/**
 * megasas_transition_to_ready -	Move the FW to READY state
3522
 * @instance:				Adapter soft state
3523 3524 3525 3526 3527 3528
 *
 * 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.
 */
3529
int
3530
megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3531 3532 3533 3534 3535
{
	int i;
	u8 max_wait;
	u32 fw_state;
	u32 cur_state;
3536
	u32 abs_state, curr_abs_state;
3537

3538 3539
	abs_state = instance->instancet->read_fw_status_reg(instance->reg_set);
	fw_state = abs_state & MFI_STATE_MASK;
3540

3541
	if (fw_state != MFI_STATE_READY)
3542
		dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
3543
		       " state\n");
3544

3545 3546 3547 3548 3549
	while (fw_state != MFI_STATE_READY) {

		switch (fw_state) {

		case MFI_STATE_FAULT:
3550
			dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW in FAULT state!!\n");
3551 3552 3553 3554 3555 3556
			if (ocr) {
				max_wait = MEGASAS_RESET_WAIT_TIME;
				cur_state = MFI_STATE_FAULT;
				break;
			} else
				return -ENODEV;
3557 3558 3559 3560 3561

		case MFI_STATE_WAIT_HANDSHAKE:
			/*
			 * Set the CLR bit in inbound doorbell
			 */
3562
			if ((instance->pdev->device ==
3563 3564
				PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
				(instance->pdev->device ==
3565
				 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3566
				(instance->ctrl_context))
3567 3568
				writel(
				  MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3569
				  &instance->reg_set->doorbell);
3570
			else
3571 3572 3573
				writel(
				    MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
					&instance->reg_set->inbound_doorbell);
3574

3575
			max_wait = MEGASAS_RESET_WAIT_TIME;
3576 3577 3578
			cur_state = MFI_STATE_WAIT_HANDSHAKE;
			break;

3579
		case MFI_STATE_BOOT_MESSAGE_PENDING:
3580
			if ((instance->pdev->device ==
3581 3582 3583
			     PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
				(instance->pdev->device ==
				 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3584
				(instance->ctrl_context))
3585
				writel(MFI_INIT_HOTPLUG,
3586
				       &instance->reg_set->doorbell);
3587
			else
3588 3589
				writel(MFI_INIT_HOTPLUG,
					&instance->reg_set->inbound_doorbell);
3590

3591
			max_wait = MEGASAS_RESET_WAIT_TIME;
3592 3593 3594
			cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
			break;

3595 3596
		case MFI_STATE_OPERATIONAL:
			/*
3597
			 * Bring it to READY state; assuming max wait 10 secs
3598
			 */
3599
			instance->instancet->disable_intr(instance);
3600 3601 3602
			if ((instance->pdev->device ==
				PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
				(instance->pdev->device ==
3603
				PCI_DEVICE_ID_LSI_SAS0071SKINNY)  ||
3604
				(instance->ctrl_context)) {
3605
				writel(MFI_RESET_FLAGS,
3606
					&instance->reg_set->doorbell);
3607 3608

				if (instance->ctrl_context) {
3609 3610 3611 3612 3613 3614 3615 3616 3617 3618
					for (i = 0; i < (10 * 1000); i += 20) {
						if (readl(
							    &instance->
							    reg_set->
							    doorbell) & 1)
							msleep(20);
						else
							break;
					}
				}
3619 3620 3621
			} else
				writel(MFI_RESET_FLAGS,
					&instance->reg_set->inbound_doorbell);
3622

3623
			max_wait = MEGASAS_RESET_WAIT_TIME;
3624 3625 3626 3627 3628 3629 3630
			cur_state = MFI_STATE_OPERATIONAL;
			break;

		case MFI_STATE_UNDEFINED:
			/*
			 * This state should not last for more than 2 seconds
			 */
3631
			max_wait = MEGASAS_RESET_WAIT_TIME;
3632 3633 3634 3635
			cur_state = MFI_STATE_UNDEFINED;
			break;

		case MFI_STATE_BB_INIT:
3636
			max_wait = MEGASAS_RESET_WAIT_TIME;
3637 3638 3639 3640
			cur_state = MFI_STATE_BB_INIT;
			break;

		case MFI_STATE_FW_INIT:
3641
			max_wait = MEGASAS_RESET_WAIT_TIME;
3642 3643 3644 3645
			cur_state = MFI_STATE_FW_INIT;
			break;

		case MFI_STATE_FW_INIT_2:
3646
			max_wait = MEGASAS_RESET_WAIT_TIME;
3647 3648 3649 3650
			cur_state = MFI_STATE_FW_INIT_2;
			break;

		case MFI_STATE_DEVICE_SCAN:
3651
			max_wait = MEGASAS_RESET_WAIT_TIME;
3652 3653 3654 3655
			cur_state = MFI_STATE_DEVICE_SCAN;
			break;

		case MFI_STATE_FLUSH_CACHE:
3656
			max_wait = MEGASAS_RESET_WAIT_TIME;
3657 3658 3659 3660
			cur_state = MFI_STATE_FLUSH_CACHE;
			break;

		default:
3661
			dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
3662 3663 3664 3665 3666 3667 3668 3669
			       fw_state);
			return -ENODEV;
		}

		/*
		 * The cur_state should not last for more than max_wait secs
		 */
		for (i = 0; i < (max_wait * 1000); i++) {
3670 3671
			curr_abs_state = instance->instancet->
				read_fw_status_reg(instance->reg_set);
3672

3673
			if (abs_state == curr_abs_state) {
3674 3675 3676 3677 3678 3679 3680 3681
				msleep(1);
			} else
				break;
		}

		/*
		 * Return error if fw_state hasn't changed after max_wait
		 */
3682
		if (curr_abs_state == abs_state) {
3683
			dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
3684 3685 3686
			       "in %d secs\n", fw_state, max_wait);
			return -ENODEV;
		}
3687 3688 3689

		abs_state = curr_abs_state;
		fw_state = curr_abs_state & MFI_STATE_MASK;
3690
	}
3691
	dev_info(&instance->pdev->dev, "FW now in Ready state\n");
3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702

	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;
3703
	u32 max_cmd = instance->max_mfi_cmds;
3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720
	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)
3721
			pci_pool_free(instance->sense_dma_pool, cmd->sense,
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 3752
				      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;

3753
	max_cmd = instance->max_mfi_cmds;
3754 3755 3756 3757 3758 3759 3760 3761

	/*
	 * 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);

3762
	if (instance->flag_ieee)
3763 3764
		sge_sz = sizeof(struct megasas_sge_skinny);

3765
	/*
3766 3767 3768 3769 3770 3771 3772 3773 3774
	 * 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)
3775
	 */
3776
	frame_count = instance->ctrl_context ? (3 + 1) : (15 + 1);
3777 3778 3779 3780 3781
	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",
3782
					instance->pdev, total_sz, 256, 0);
3783 3784

	if (!instance->frame_dma_pool) {
3785
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
3786 3787 3788 3789 3790 3791 3792
		return -ENOMEM;
	}

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

	if (!instance->sense_dma_pool) {
3793
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
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 3820

		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) {
3821
			dev_printk(KERN_DEBUG, &instance->pdev->dev, "pci_pool_alloc failed\n");
3822 3823 3824 3825
			megasas_teardown_frame_pool(instance);
			return -ENOMEM;
		}

3826
		memset(cmd->frame, 0, total_sz);
3827
		cmd->frame->io.context = cpu_to_le32(cmd->index);
3828
		cmd->frame->io.pad_0 = 0;
3829
		if (!instance->ctrl_context && reset_devices)
3830
			cmd->frame->hdr.cmd = MFI_CMD_INVALID;
3831 3832 3833 3834 3835 3836 3837 3838 3839
	}

	return 0;
}

/**
 * megasas_free_cmds -	Free all the cmds in the free cmd pool
 * @instance:		Adapter soft state
 */
3840
void megasas_free_cmds(struct megasas_instance *instance)
3841 3842
{
	int i;
3843

3844 3845 3846 3847
	/* First free the MFI frame pool */
	megasas_teardown_frame_pool(instance);

	/* Free all the commands in the cmd_list */
3848 3849
	for (i = 0; i < instance->max_mfi_cmds; i++)

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 3876
		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.
 */
3877
int megasas_alloc_cmds(struct megasas_instance *instance)
3878 3879 3880 3881 3882
{
	int i;
	int j;
	u32 max_cmd;
	struct megasas_cmd *cmd;
3883
	struct fusion_context *fusion;
3884

3885
	fusion = instance->ctrl_context;
3886
	max_cmd = instance->max_mfi_cmds;
3887 3888 3889 3890 3891 3892

	/*
	 * instance->cmd_list is an array of struct megasas_cmd pointers.
	 * Allocate the dynamic array first and then allocate individual
	 * commands.
	 */
3893
	instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3894 3895

	if (!instance->cmd_list) {
3896
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
3897 3898 3899
		return -ENOMEM;
	}

3900
	memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921

	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;
3922
		cmd->scmd = NULL;
3923 3924 3925 3926 3927 3928 3929 3930 3931
		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)) {
3932
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
3933 3934 3935 3936 3937 3938
		megasas_free_cmds(instance);
	}

	return 0;
}

3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957
/*
 * 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;
}

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 4024
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;
}
4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046
/*
 * 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) {
4047
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4048 4049 4050 4051 4052 4053 4054 4055 4056
		return -ENOMEM;
	}

	dcmd = &cmd->frame->dcmd;

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

	if (!ci) {
4057
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for pd_list\n");
4058 4059 4060 4061 4062 4063 4064 4065 4066 4067
		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;
4068
	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4069
	dcmd->sge_count = 1;
4070
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4071
	dcmd->timeout = 0;
4072
	dcmd->pad_0 = 0;
4073 4074 4075 4076
	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));
4077

4078 4079
	if (instance->ctrl_context && !instance->mask_interrupts)
		ret = megasas_issue_blocked_cmd(instance, cmd,
4080
			MFI_IO_TIMEOUT_SECS);
4081 4082
	else
		ret = megasas_issue_polled(instance, cmd);
4083

4084 4085 4086 4087 4088
	switch (ret) {
	case DCMD_FAILED:
		megaraid_sas_kill_hba(instance);
		break;
	case DCMD_TIMEOUT:
4089

4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110
		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;
		}
4111

4112 4113 4114 4115 4116 4117 4118 4119
		break;

	case DCMD_SUCCESS:
		pd_addr = ci->addr;

		if ((le32_to_cpu(ci->count) >
			(MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
			break;
4120

4121
		memset(instance->local_pd_list, 0,
4122
				MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4123

4124
		for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4125
			instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid	=
4126
					le16_to_cpu(pd_addr->deviceId);
4127
			instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType	=
4128
					pd_addr->scsiDevType;
4129
			instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState	=
4130
					MR_PD_STATE_SYSTEM;
4131 4132
			pd_addr++;
		}
4133

4134 4135
		memcpy(instance->pd_list, instance->local_pd_list,
			sizeof(instance->pd_list));
4136 4137
		break;

4138 4139 4140 4141 4142
	}

	pci_free_consistent(instance->pdev,
				MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
				ci, ci_h);
4143

4144 4145
	if (ret != DCMD_TIMEOUT)
		megasas_return_cmd(instance, cmd);
4146 4147 4148 4149

	return ret;
}

4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166
/*
 * 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;
4167
	u32 ld_count;
4168 4169 4170 4171

	cmd = megasas_get_cmd(instance);

	if (!cmd) {
4172
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4173 4174 4175 4176 4177 4178 4179 4180 4181 4182
		return -ENOMEM;
	}

	dcmd = &cmd->frame->dcmd;

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

	if (!ci) {
4183
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem in get_ld_list\n");
4184 4185 4186 4187 4188 4189 4190
		megasas_return_cmd(instance, cmd);
		return -ENOMEM;
	}

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

4191 4192
	if (instance->supportmax256vd)
		dcmd->mbox.b[0] = 1;
4193
	dcmd->cmd = MFI_CMD_DCMD;
4194
	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4195
	dcmd->sge_count = 1;
4196
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4197
	dcmd->timeout = 0;
4198 4199 4200 4201
	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));
4202 4203
	dcmd->pad_0  = 0;

4204 4205
	if (instance->ctrl_context && !instance->mask_interrupts)
		ret = megasas_issue_blocked_cmd(instance, cmd,
4206
			MFI_IO_TIMEOUT_SECS);
4207 4208 4209
	else
		ret = megasas_issue_polled(instance, cmd);

4210 4211
	ld_count = le32_to_cpu(ci->ldCount);

4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244
	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;
4245

4246
		memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4247

4248
		for (ld_index = 0; ld_index < ld_count; ld_index++) {
4249 4250
			if (ci->ldList[ld_index].state != 0) {
				ids = ci->ldList[ld_index].ref.targetId;
4251
				instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4252 4253
			}
		}
4254 4255

		break;
4256 4257
	}

4258 4259 4260 4261
	pci_free_consistent(instance->pdev, sizeof(struct MR_LD_LIST), ci, ci_h);

	if (ret != DCMD_TIMEOUT)
		megasas_return_cmd(instance, cmd);
4262 4263 4264 4265

	return ret;
}

4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282
/**
 * 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;
4283
	u32 tgtid_count;
4284 4285 4286 4287

	cmd = megasas_get_cmd(instance);

	if (!cmd) {
4288 4289
		dev_warn(&instance->pdev->dev,
		         "megasas_ld_list_query: Failed to get cmd\n");
4290 4291 4292 4293 4294 4295 4296 4297 4298
		return -ENOMEM;
	}

	dcmd = &cmd->frame->dcmd;

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

	if (!ci) {
4299 4300
		dev_warn(&instance->pdev->dev,
		         "Failed to alloc mem for ld_list_query\n");
4301 4302 4303 4304 4305 4306 4307 4308
		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;
4309 4310
	if (instance->supportmax256vd)
		dcmd->mbox.b[2] = 1;
4311 4312

	dcmd->cmd = MFI_CMD_DCMD;
4313
	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4314
	dcmd->sge_count = 1;
4315
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4316
	dcmd->timeout = 0;
4317 4318 4319 4320
	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));
4321 4322
	dcmd->pad_0  = 0;

4323
	if (instance->ctrl_context && !instance->mask_interrupts)
4324
		ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4325 4326
	else
		ret = megasas_issue_polled(instance, cmd);
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 4363
	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;
4364

4365
		memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4366
		for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4367 4368 4369 4370
			ids = ci->targetId[ld_index];
			instance->ld_ids[ids] = ci->targetId[ld_index];
		}

4371
		break;
4372 4373 4374
	}

	pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
4375
		    ci, ci_h);
4376

4377 4378
	if (ret != DCMD_TIMEOUT)
		megasas_return_cmd(instance, cmd);
4379 4380 4381 4382

	return ret;
}

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 4414
/*
 * 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;
	}
4415 4416 4417 4418 4419

	dev_info(&instance->pdev->dev,
		"firmware type\t: %s\n",
		instance->supportmax256vd ? "Extended VD(240 VD)firmware" :
		"Legacy(64 VD) firmware");
4420

4421
	old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
4422 4423
				(sizeof(struct MR_LD_SPAN_MAP) *
				(instance->fw_supported_vd_count - 1));
4424 4425
	new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
	fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) +
4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437
				(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;
}

4438 4439 4440 4441 4442 4443 4444 4445
/**
 * 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.
 */
4446
int
4447
megasas_get_ctrl_info(struct megasas_instance *instance)
4448 4449 4450 4451 4452
{
	int ret = 0;
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;
	struct megasas_ctrl_info *ci;
4453
	struct megasas_ctrl_info *ctrl_info;
4454 4455
	dma_addr_t ci_h = 0;

4456 4457
	ctrl_info = instance->ctrl_info;

4458 4459 4460
	cmd = megasas_get_cmd(instance);

	if (!cmd) {
4461
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
4462 4463 4464 4465 4466 4467 4468 4469 4470
		return -ENOMEM;
	}

	dcmd = &cmd->frame->dcmd;

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

	if (!ci) {
4471
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ctrl info\n");
4472 4473 4474 4475 4476 4477 4478 4479
		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;
4480
	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4481
	dcmd->sge_count = 1;
4482
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4483
	dcmd->timeout = 0;
4484
	dcmd->pad_0 = 0;
4485 4486 4487 4488
	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));
4489
	dcmd->mbox.b[0] = 1;
4490

4491
	if (instance->ctrl_context && !instance->mask_interrupts)
4492
		ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4493 4494 4495
	else
		ret = megasas_issue_polled(instance, cmd);

4496 4497
	switch (ret) {
	case DCMD_SUCCESS:
4498
		memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
4499 4500 4501
		/* Save required controller information in
		 * CPU endianness format.
		 */
4502 4503 4504
		le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
		le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
		le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
4505 4506 4507 4508 4509 4510

		/* 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.
		 */
4511
		megasas_update_ext_vd_details(instance);
4512 4513
		instance->use_seqnum_jbod_fp =
			ctrl_info->adapterOperations3.useSeqNumJbodFP;
4514 4515

		/*Check whether controller is iMR or MR */
4516 4517
		instance->is_imr = (ctrl_info->memory_size ? 0 : 1);
		dev_info(&instance->pdev->dev,
4518 4519 4520 4521
			"controller type\t: %s(%dMB)\n",
			instance->is_imr ? "iMR" : "MR",
			le16_to_cpu(ctrl_info->memory_size));

4522 4523
		instance->disableOnlineCtrlReset =
			ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
4524 4525
		instance->secure_jbod_support =
			ctrl_info->adapterOperations3.supportSecurityonJBOD;
4526 4527
		dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
			instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
4528 4529
		dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
			instance->secure_jbod_support ? "Yes" : "No");
4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550
		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;

4551
	}
4552 4553 4554 4555

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

4556
	megasas_return_cmd(instance, cmd);
4557 4558


4559 4560 4561
	return ret;
}

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 4596
/*
 * 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;
4597
	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4598 4599 4600 4601 4602 4603 4604 4605 4606
	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);

4607
	if (instance->ctrl_context && !instance->mask_interrupts)
4608
		ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4609
	else
4610 4611
		ret = megasas_issue_polled(instance, cmd);

4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629
	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);

4630 4631 4632
	return ret;
}

4633 4634 4635 4636 4637 4638 4639 4640 4641
/**
 * 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)
{
4642
	__le32 context;
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 4670
	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;

4671 4672
	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);
4673

4674 4675
	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);
4676 4677

	init_frame->cmd = MFI_CMD_INIT;
4678
	init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
4679 4680 4681 4682
	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));
4683

4684
	init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
4685 4686 4687 4688

	/*
	 * disable the intr before firing the init frame to FW
	 */
4689
	instance->instancet->disable_intr(instance);
4690 4691 4692 4693 4694 4695

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

	if (megasas_issue_polled(instance, cmd)) {
4696
		dev_err(&instance->pdev->dev, "Failed to init firmware\n");
4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708
		megasas_return_cmd(instance, cmd);
		goto fail_fw_init;
	}

	megasas_return_cmd(instance, cmd);

	return 0;

fail_fw_init:
	return -EINVAL;
}

4709 4710
static u32
megasas_init_adapter_mfi(struct megasas_instance *instance)
4711
{
4712
	struct megasas_register_set __iomem *reg_set;
4713 4714 4715 4716 4717 4718 4719 4720
	u32 context_sz;
	u32 reply_q_sz;

	reg_set = instance->reg_set;

	/*
	 * Get various operational parameters from status register
	 */
4721
	instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
4722 4723 4724 4725 4726 4727
	/*
	 * 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;
4728
	instance->max_mfi_cmds = instance->max_fw_cmds;
4729
	instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
4730
					0x10;
4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745
	/*
	 * 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));
	}

4746
	instance->cur_can_queue = instance->max_scsi_cmds;
4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769
	/*
	 * 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) {
4770
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
4771 4772 4773
		goto fail_reply_queue;
	}

4774
	if (megasas_issue_init_mfi(instance))
4775 4776
		goto fail_fw_init;

4777
	if (megasas_get_ctrl_info(instance)) {
4778 4779 4780 4781 4782 4783
		dev_err(&instance->pdev->dev, "(%d): Could get controller info "
			"Fail from %s %d\n", instance->unique_id,
			__func__, __LINE__);
		goto fail_fw_init;
	}

4784 4785 4786 4787 4788
	instance->fw_support_ieee = 0;
	instance->fw_support_ieee =
		(instance->instancet->read_fw_status_reg(reg_set) &
		0x04000000);

4789
	dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
4790 4791 4792 4793 4794
			instance->fw_support_ieee);

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

4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807
	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;
}

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 4908
/*
 * 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]);
}

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 4964
/**
 * 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;
}

4965 4966 4967 4968 4969 4970 4971 4972 4973 4974 4975
/**
 * 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;
4976
	u32 tmp_sectors, msix_enable, scratch_pad_2;
4977
	resource_size_t base_addr;
4978
	struct megasas_register_set __iomem *reg_set;
4979
	struct megasas_ctrl_info *ctrl_info = NULL;
4980
	unsigned long bar_list;
4981
	int i, loop, fw_msix_count = 0;
4982
	struct IOV_111 *iovPtr;
4983 4984 4985
	struct fusion_context *fusion;

	fusion = instance->ctrl_context;
4986 4987 4988 4989 4990 4991

	/* 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")) {
4992
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
4993 4994 4995
		return -EBUSY;
	}

4996 4997
	base_addr = pci_resource_start(instance->pdev, instance->bar);
	instance->reg_set = ioremap_nocache(base_addr, 8192);
4998 4999

	if (!instance->reg_set) {
5000
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5001 5002 5003 5004 5005 5006
		goto fail_ioremap;
	}

	reg_set = instance->reg_set;

	switch (instance->pdev->device) {
5007
	case PCI_DEVICE_ID_LSI_FUSION:
5008
	case PCI_DEVICE_ID_LSI_PLASMA:
5009
	case PCI_DEVICE_ID_LSI_INVADER:
5010
	case PCI_DEVICE_ID_LSI_FURY:
5011 5012
	case PCI_DEVICE_ID_LSI_INTRUDER:
	case PCI_DEVICE_ID_LSI_INTRUDER_24:
5013 5014
	case PCI_DEVICE_ID_LSI_CUTLASS_52:
	case PCI_DEVICE_ID_LSI_CUTLASS_53:
5015 5016
		instance->instancet = &megasas_instance_template_fusion;
		break;
5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032
	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;
5033
		instance->allow_fw_scan = 1;
5034 5035 5036
		break;
	}

5037 5038 5039 5040 5041 5042
	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,
5043
			"FW restarted successfully from %s!\n",
5044 5045 5046 5047 5048 5049 5050 5051
			__func__);

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

		if (megasas_transition_to_ready(instance, 0))
			goto fail_ready_state;
	}
5052

5053 5054 5055 5056 5057
	/*
	 * 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] =
5058
		(u32 __iomem *)((u8 __iomem *)instance->reg_set +
5059 5060
		MPI2_REPLY_POST_HOST_INDEX_OFFSET);

5061 5062 5063
	/* Check if MSI-X is supported while in ready state */
	msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
		       0x4000000) >> 0x1a;
5064
	if (msix_enable && !msix_disable) {
5065 5066
		scratch_pad_2 = readl
			(&instance->reg_set->outbound_scratch_pad_2);
5067
		/* Check max MSI-X vectors */
5068 5069 5070 5071 5072 5073 5074 5075 5076
		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;
5077 5078 5079
				if (rdpq_enable)
					instance->is_rdpq = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ?
								1 : 0;
5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090 5091
				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));
				}
5092 5093 5094 5095
			}
			if (msix_vectors)
				instance->msix_vectors = min(msix_vectors,
					instance->msix_vectors);
5096
		} else /* MFI adapters */
5097 5098 5099 5100 5101 5102
			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;
5103 5104
		i = pci_enable_msix_range(instance->pdev, instance->msixentry,
					  1, instance->msix_vectors);
5105
		if (i > 0)
5106 5107
			instance->msix_vectors = i;
		else
5108 5109
			instance->msix_vectors = 0;
	}
5110

5111 5112 5113 5114 5115
	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());
5116 5117
	dev_info(&instance->pdev->dev,
		"RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
5118

5119 5120 5121
	tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
		(unsigned long)instance);

5122 5123 5124 5125
	if (instance->msix_vectors ?
		megasas_setup_irqs_msix(instance, 1) :
		megasas_setup_irqs_ioapic(instance))
		goto fail_setup_irqs;
5126

5127 5128 5129 5130 5131 5132 5133 5134 5135 5136 5137
	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;
5138 5139
	/* Get operational params, sge flags, send init cmd to controller */
	if (instance->instancet->init_adapter(instance))
5140
		goto fail_init_adapter;
5141

5142

5143
	instance->instancet->enable_intr(instance);
5144

5145
	dev_err(&instance->pdev->dev, "INIT adapter done\n");
5146

5147 5148
	megasas_setup_jbod_map(instance);

5149
	/** for passthrough
5150 5151 5152
	 * the following function will get the PD LIST.
	 */
	memset(instance->pd_list, 0,
5153
		(MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5154
	if (megasas_get_pd_list(instance) < 0) {
5155
		dev_err(&instance->pdev->dev, "failed to get PD list\n");
5156
		goto fail_get_pd_list;
5157
	}
5158

5159
	memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5160 5161 5162
	if (megasas_ld_list_query(instance,
				  MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
		megasas_get_ld_list(instance);
5163

5164 5165 5166 5167 5168 5169 5170 5171 5172
	/*
	 * 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.
	 */
5173
	tmp_sectors = 0;
5174
	ctrl_info = instance->ctrl_info;
5175

5176 5177 5178
	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);
5179

5180
	tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
5181

5182 5183 5184 5185 5186 5187 5188 5189 5190
	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;
5191

5192 5193
	}
	if (ctrl_info->host_interface.SRIOV) {
5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206
		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;
			}
5207
		}
5208 5209
		dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
			instance->requestorId);
5210 5211 5212 5213 5214 5215 5216
	}

	instance->crash_dump_fw_support =
		ctrl_info->adapterOperations3.supportCrashDump;
	instance->crash_dump_drv_support =
		(instance->crash_dump_fw_support &&
		instance->crash_dump_buf);
5217
	if (instance->crash_dump_drv_support)
5218 5219 5220
		megasas_set_crash_dump_params(instance,
			MR_CRASH_BUF_TURN_OFF);

5221
	else {
5222 5223 5224 5225 5226 5227
		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;
5228
	}
5229

5230 5231 5232 5233 5234 5235 5236 5237 5238 5239 5240

	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");
5241 5242
	dev_info(&instance->pdev->dev, "jbod sync map		: %s\n",
		instance->use_seqnum_jbod_fp ? "yes" : "no");
5243 5244


5245
	instance->max_sectors_per_req = instance->max_num_sge *
5246
						SGE_BUFFER_SIZE / 512;
5247 5248
	if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
		instance->max_sectors_per_req = tmp_sectors;
5249

5250 5251 5252 5253 5254 5255 5256 5257
	/* Check for valid throttlequeuedepth module parameter */
	if (throttlequeuedepth &&
			throttlequeuedepth <= instance->max_scsi_cmds)
		instance->throttlequeuedepth = throttlequeuedepth;
	else
		instance->throttlequeuedepth =
				MEGASAS_THROTTLE_QUEUE_DEPTH;

5258

5259 5260 5261 5262 5263 5264 5265 5266 5267 5268 5269
	/* 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;
	}

5270 5271
	return 0;

5272 5273
fail_get_pd_list:
	instance->instancet->disable_intr(instance);
5274
fail_init_adapter:
5275 5276 5277 5278 5279
	megasas_destroy_irqs(instance);
fail_setup_irqs:
	if (instance->msix_vectors)
		pci_disable_msix(instance->pdev);
	instance->msix_vectors = 0;
5280
fail_ready_state:
5281 5282
	kfree(instance->ctrl_info);
	instance->ctrl_info = NULL;
5283 5284 5285
	iounmap(instance->reg_set);

      fail_ioremap:
5286
	pci_release_selected_regions(instance->pdev, instance->bar);
5287 5288 5289 5290 5291 5292

	return -EINVAL;
}

/**
 * megasas_release_mfi -	Reverses the FW initialization
G
Geert Uytterhoeven 已提交
5293
 * @instance:			Adapter soft state
5294 5295 5296
 */
static void megasas_release_mfi(struct megasas_instance *instance)
{
5297
	u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
5298

5299 5300
	if (instance->reply_queue)
		pci_free_consistent(instance->pdev, reply_q_sz,
5301 5302 5303 5304 5305 5306
			    instance->reply_queue, instance->reply_queue_h);

	megasas_free_cmds(instance);

	iounmap(instance->reg_set);

5307
	pci_release_selected_regions(instance->pdev, instance->bar);
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 5352
}

/**
 * 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;
5353
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
5354
	dcmd->timeout = 0;
5355
	dcmd->pad_0 = 0;
5356 5357 5358 5359
	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));
5360

5361 5362
	if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) ==
		DCMD_SUCCESS) {
5363 5364 5365
		/*
		 * Copy the data back into callers buffer
		 */
5366 5367 5368 5369 5370
		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;
5371 5372 5373
	} else
		dev_err(&instance->pdev->dev, "DCMD failed "
			"from %s\n", __func__);
5374 5375 5376 5377

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

5378
	megasas_return_cmd(instance, cmd);
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 5418

	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) {

5419 5420
		prev_aen.word =
			le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431 5432

		/*
		 * 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) &&
5433
		    !((prev_aen.members.locale & curr_aen.members.locale) ^
5434 5435 5436 5437 5438 5439 5440
		      curr_aen.members.locale)) {
			/*
			 * Previously issued event registration includes
			 * current request. Nothing to do.
			 */
			return 0;
		} else {
5441
			curr_aen.members.locale |= prev_aen.members.locale;
5442 5443 5444 5445 5446 5447 5448

			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->
5449
								  aen_cmd, 30);
5450 5451

			if (ret_val) {
5452
				dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
5453 5454 5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474 5475
				       "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;
5476
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
5477
	dcmd->timeout = 0;
5478
	dcmd->pad_0 = 0;
5479 5480 5481
	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);
5482
	instance->last_seq_num = seq_num;
5483 5484 5485
	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));
5486

5487 5488 5489 5490 5491
	if (instance->aen_cmd != NULL) {
		megasas_return_cmd(instance, cmd);
		return 0;
	}

5492 5493 5494 5495 5496 5497 5498 5499 5500 5501
	/*
	 * 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
	 */
5502
	instance->instancet->issue_dcmd(instance, cmd);
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 5530

	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;

5531
	return megasas_register_aen(instance,
5532
			le32_to_cpu(eli.newest_seq_num) + 1,
5533
			class_locale.word);
5534 5535 5536 5537 5538 5539 5540 5541 5542 5543 5544 5545 5546 5547 5548
}

/**
 * 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;
5549
	host->can_queue = instance->max_scsi_cmds;
5550 5551
	host->this_id = instance->init_id;
	host->sg_tablesize = instance->max_num_sge;
5552 5553 5554 5555

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

5556 5557 5558 5559 5560 5561 5562 5563 5564 5565 5566 5567 5568 5569
	/*
	 * 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 {
5570
			dev_info(&instance->pdev->dev, "max_sectors should be > 0"
5571 5572 5573 5574 5575 5576
				"and <= %d (or < 1MB for GEN2 controller)\n",
				instance->max_sectors_per_req);
			}
		}
	}

5577
	host->max_sectors = instance->max_sectors_per_req;
5578
	host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
5579 5580 5581
	host->max_channel = MEGASAS_MAX_CHANNELS - 1;
	host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
	host->max_lun = MEGASAS_MAX_LUN;
5582
	host->max_cmd_len = 16;
5583

5584
	/* Fusion only supports host reset */
5585
	if (instance->ctrl_context) {
5586 5587
		host->hostt->eh_device_reset_handler = NULL;
		host->hostt->eh_bus_reset_handler = NULL;
5588 5589
		host->hostt->eh_target_reset_handler = megasas_reset_target_fusion;
		host->hostt->eh_abort_handler = megasas_task_abort_fusion;
5590 5591
	}

5592 5593 5594 5595
	/*
	 * Notify the mid-layer about the new controller
	 */
	if (scsi_add_host(host, &instance->pdev->dev)) {
5596 5597 5598
		dev_err(&instance->pdev->dev,
			"Failed to add host from %s %d\n",
			__func__, __LINE__);
5599 5600 5601 5602 5603 5604
		return -ENODEV;
	}

	return 0;
}

5605 5606 5607 5608
static int
megasas_set_dma_mask(struct pci_dev *pdev)
{
	/*
5609
	 * All our controllers are capable of performing 64-bit DMA
5610 5611
	 */
	if (IS_DMA64) {
5612
		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
5613

5614
			if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5615 5616 5617
				goto fail_set_dma_mask;
		}
	} else {
5618
		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5619 5620
			goto fail_set_dma_mask;
	}
5621 5622 5623 5624 5625 5626 5627 5628 5629 5630 5631 5632 5633
	/*
	 * 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;
	}
5634

5635 5636 5637 5638 5639 5640
	return 0;

fail_set_dma_mask:
	return 1;
}

5641 5642 5643
/**
 * megasas_probe_one -	PCI hotplug entry point
 * @pdev:		PCI device structure
5644
 * @id:			PCI ids of supported hotplugged adapter
5645
 */
5646 5647
static int megasas_probe_one(struct pci_dev *pdev,
			     const struct pci_device_id *id)
5648
{
5649
	int rval, pos;
5650 5651
	struct Scsi_Host *host;
	struct megasas_instance *instance;
5652
	u16 control = 0;
5653
	struct fusion_context *fusion = NULL;
5654 5655 5656 5657 5658

	/* Reset MSI-X in the kdump kernel */
	if (reset_devices) {
		pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
		if (pos) {
5659
			pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
5660 5661 5662 5663
					     &control);
			if (control & PCI_MSIX_FLAGS_ENABLE) {
				dev_info(&pdev->dev, "resetting MSI-X\n");
				pci_write_config_word(pdev,
5664
						      pos + PCI_MSIX_FLAGS,
5665 5666 5667 5668 5669
						      control &
						      ~PCI_MSIX_FLAGS_ENABLE);
			}
		}
	}
5670 5671 5672 5673

	/*
	 * PCI prepping: enable device set bus mastering and dma mask
	 */
5674
	rval = pci_enable_device_mem(pdev);
5675 5676 5677 5678 5679 5680 5681

	if (rval) {
		return rval;
	}

	pci_set_master(pdev);

5682 5683
	if (megasas_set_dma_mask(pdev))
		goto fail_set_dma_mask;
5684 5685 5686 5687 5688

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

	if (!host) {
5689
		dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
5690 5691 5692 5693 5694
		goto fail_alloc_instance;
	}

	instance = (struct megasas_instance *)host->hostdata;
	memset(instance, 0, sizeof(*instance));
5695
	atomic_set(&instance->fw_reset_no_pci_access, 0);
5696
	instance->pdev = pdev;
5697

5698 5699
	switch (instance->pdev->device) {
	case PCI_DEVICE_ID_LSI_FUSION:
5700
	case PCI_DEVICE_ID_LSI_PLASMA:
5701
	case PCI_DEVICE_ID_LSI_INVADER:
5702
	case PCI_DEVICE_ID_LSI_FURY:
5703 5704
	case PCI_DEVICE_ID_LSI_INTRUDER:
	case PCI_DEVICE_ID_LSI_INTRUDER_24:
5705 5706
	case PCI_DEVICE_ID_LSI_CUTLASS_52:
	case PCI_DEVICE_ID_LSI_CUTLASS_53:
5707
	{
5708 5709 5710 5711
		instance->ctrl_context_pages =
			get_order(sizeof(struct fusion_context));
		instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL,
				instance->ctrl_context_pages);
5712
		if (!instance->ctrl_context) {
5713
			dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate "
5714 5715 5716 5717
			       "memory for Fusion context info\n");
			goto fail_alloc_dma_buf;
		}
		fusion = instance->ctrl_context;
5718 5719
		memset(fusion, 0,
			((1 << PAGE_SHIFT) << instance->ctrl_context_pages));
5720 5721 5722 5723 5724
		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;
5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736
	}
	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) {
5737
			dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate"
5738 5739 5740
			       "memory for producer, consumer\n");
			goto fail_alloc_dma_buf;
		}
5741

5742 5743 5744
		*instance->producer = 0;
		*instance->consumer = 0;
		break;
5745 5746
	}

5747 5748 5749 5750 5751 5752 5753
	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");

5754 5755 5756 5757 5758 5759 5760 5761 5762 5763 5764 5765 5766 5767
	/* 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)
5768
		dev_err(&pdev->dev, "Can't allocate Firmware "
5769 5770
			"crash dump DMA buffer\n");

5771
	megasas_poll_wait_aen = 0;
5772
	instance->flag_ieee = 0;
5773
	instance->ev = NULL;
5774
	instance->issuepend_done = 1;
5775
	atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5776
	instance->is_imr = 0;
5777 5778 5779 5780 5781 5782 5783

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

	if (!instance->evt_detail) {
5784
		dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate memory for "
5785 5786 5787 5788
		       "event detail structure\n");
		goto fail_alloc_dma_buf;
	}

5789 5790 5791 5792 5793 5794
	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");

5795 5796 5797 5798
	/*
	 * Initialize locks and queues
	 */
	INIT_LIST_HEAD(&instance->cmd_pool);
5799
	INIT_LIST_HEAD(&instance->internal_reset_pending_q);
5800

5801 5802
	atomic_set(&instance->fw_outstanding,0);

5803 5804 5805
	init_waitqueue_head(&instance->int_cmd_wait_q);
	init_waitqueue_head(&instance->abort_cmd_wait_q);

5806
	spin_lock_init(&instance->mfi_pool_lock);
5807
	spin_lock_init(&instance->hba_lock);
5808
	spin_lock_init(&instance->completion_lock);
5809

5810
	mutex_init(&instance->reset_mutex);
5811
	mutex_init(&instance->hba_mutex);
5812 5813 5814 5815 5816 5817 5818

	/*
	 * 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;
5819
	instance->ctrl_info = NULL;
5820

5821

5822
	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5823
		(instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
5824
		instance->flag_ieee = 1;
5825

5826
	megasas_dbg_lvl = 0;
5827
	instance->flag = 0;
5828
	instance->unload = 1;
5829
	instance->last_time = 0;
5830
	instance->disableOnlineCtrlReset = 1;
5831
	instance->UnevenSpanSupport = 0;
5832

5833
	if (instance->ctrl_context) {
5834
		INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
5835 5836
		INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
	} else
5837
		INIT_WORK(&instance->work_init, process_fw_state_change_wq);
5838

5839 5840 5841 5842 5843 5844
	/*
	 * Initialize MFI Firmware
	 */
	if (megasas_init_fw(instance))
		goto fail_init_mfi;

5845 5846 5847 5848 5849 5850
	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)
5851
				dev_warn(&pdev->dev, "Can't allocate "
5852 5853 5854 5855 5856 5857 5858 5859
				       "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)
5860
				dev_warn(&pdev->dev, "Can't allocate "
5861 5862 5863 5864
				       "memory for VF affiliation buffer\n");
		}
	}

5865 5866 5867 5868 5869 5870 5871 5872 5873 5874 5875 5876 5877
	/*
	 * 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++;

5878 5879 5880 5881 5882 5883 5884
	/*
	 * Register with SCSI mid-layer
	 */
	if (megasas_io_attach(instance))
		goto fail_io_attach;

	instance->unload = 0;
5885 5886 5887 5888
	/*
	 * Trigger SCSI to scan our drives
	 */
	scsi_scan_host(host);
5889

5890 5891 5892 5893
	/*
	 * Initiate AEN (Asynchronous Event Notification)
	 */
	if (megasas_start_aen(instance)) {
5894
		dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
5895 5896 5897
		goto fail_start_aen;
	}

5898 5899 5900 5901
	/* Get current SR-IOV LD/VF affiliation */
	if (instance->requestorId)
		megasas_get_ld_vf_affiliation(instance, 1);

5902 5903
	return 0;

5904 5905
fail_start_aen:
fail_io_attach:
5906 5907 5908 5909
	megasas_mgmt_info.count--;
	megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
	megasas_mgmt_info.max_index--;

5910
	instance->instancet->disable_intr(instance);
5911 5912
	megasas_destroy_irqs(instance);

5913
	if (instance->ctrl_context)
5914 5915 5916
		megasas_release_fusion(instance);
	else
		megasas_release_mfi(instance);
5917
	if (instance->msix_vectors)
5918
		pci_disable_msix(instance->pdev);
5919
fail_init_mfi:
5920
fail_alloc_dma_buf:
5921 5922 5923 5924 5925
	if (instance->evt_detail)
		pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
				    instance->evt_detail,
				    instance->evt_detail_h);

5926 5927 5928 5929
	if (instance->pd_info)
		pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
					instance->pd_info,
					instance->pd_info_h);
5930
	if (instance->producer)
5931 5932 5933 5934 5935 5936 5937
		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);

5938 5939
fail_alloc_instance:
fail_set_dma_mask:
5940 5941 5942 5943 5944 5945 5946 5947 5948 5949 5950 5951 5952 5953
	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;

5954
	if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
5955 5956
		return;

5957 5958 5959 5960 5961 5962 5963 5964 5965 5966 5967 5968
	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;
5969
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
5970
	dcmd->timeout = 0;
5971
	dcmd->pad_0 = 0;
5972
	dcmd->data_xfer_len = 0;
5973
	dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
5974 5975
	dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;

5976 5977 5978 5979 5980 5981
	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;
	}
5982

5983
	megasas_return_cmd(instance, cmd);
5984 5985 5986 5987 5988
}

/**
 * megasas_shutdown_controller -	Instructs FW to shutdown the controller
 * @instance:				Adapter soft state
5989
 * @opcode:				Shutdown/Hibernate
5990
 */
5991 5992
static void megasas_shutdown_controller(struct megasas_instance *instance,
					u32 opcode)
5993 5994 5995 5996
{
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;

5997
	if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
5998 5999
		return;

6000 6001 6002 6003 6004 6005
	cmd = megasas_get_cmd(instance);

	if (!cmd)
		return;

	if (instance->aen_cmd)
6006
		megasas_issue_blocked_abort_cmd(instance,
6007
			instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
6008 6009
	if (instance->map_update_cmd)
		megasas_issue_blocked_abort_cmd(instance,
6010
			instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
6011 6012
	if (instance->jbod_seq_cmd)
		megasas_issue_blocked_abort_cmd(instance,
6013
			instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
6014

6015 6016 6017 6018 6019 6020 6021
	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;
6022
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6023
	dcmd->timeout = 0;
6024
	dcmd->pad_0 = 0;
6025
	dcmd->data_xfer_len = 0;
6026
	dcmd->opcode = cpu_to_le32(opcode);
6027

6028 6029 6030 6031 6032 6033
	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;
	}
6034

6035
	megasas_return_cmd(instance, cmd);
6036 6037
}

6038
#ifdef CONFIG_PM
6039
/**
6040 6041
 * megasas_suspend -	driver suspend entry point
 * @pdev:		PCI device structure
6042 6043
 * @state:		PCI power state to suspend routine
 */
6044
static int
6045 6046 6047 6048 6049 6050 6051
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;
6052
	instance->unload = 1;
6053

6054 6055 6056 6057
	/* Shutdown SR-IOV heartbeat timer */
	if (instance->requestorId && !instance->skip_heartbeat_timer_del)
		del_timer_sync(&instance->sriov_heartbeat_timer);

6058 6059
	megasas_flush_cache(instance);
	megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
6060 6061 6062 6063

	/* cancel the delayed work if this work still in queue */
	if (instance->ev != NULL) {
		struct megasas_aen_event *ev = instance->ev;
6064
		cancel_delayed_work_sync(&ev->hotplug_work);
6065 6066 6067
		instance->ev = NULL;
	}

6068 6069 6070
	tasklet_kill(&instance->isr_tasklet);

	pci_set_drvdata(instance->pdev, instance);
6071
	instance->instancet->disable_intr(instance);
6072

6073 6074
	megasas_destroy_irqs(instance);

6075
	if (instance->msix_vectors)
6076
		pci_disable_msix(instance->pdev);
6077 6078 6079 6080 6081 6082 6083 6084 6085 6086 6087 6088 6089

	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
 */
6090
static int
6091 6092
megasas_resume(struct pci_dev *pdev)
{
6093
	int rval;
6094 6095 6096 6097 6098 6099 6100 6101 6102 6103 6104 6105
	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
	 */
6106
	rval = pci_enable_device_mem(pdev);
6107 6108

	if (rval) {
6109
		dev_err(&pdev->dev, "Enable device failed\n");
6110 6111 6112 6113 6114 6115 6116 6117 6118 6119 6120 6121 6122 6123 6124 6125 6126
		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
	 */
6127
	if (megasas_transition_to_ready(instance, 0))
6128 6129
		goto fail_ready_state;

6130
	/* Now re-enable MSI-X */
6131
	if (instance->msix_vectors &&
6132 6133
	    pci_enable_msix_exact(instance->pdev, instance->msixentry,
				  instance->msix_vectors))
6134
		goto fail_reenable_msix;
6135

6136
	if (instance->ctrl_context) {
6137 6138 6139 6140 6141 6142 6143 6144
		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);
6145
	} else {
6146 6147 6148 6149 6150
		*instance->producer = 0;
		*instance->consumer = 0;
		if (megasas_issue_init_mfi(instance))
			goto fail_init_mfi;
	}
6151

6152 6153
	tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
		     (unsigned long)instance);
6154

6155 6156 6157 6158
	if (instance->msix_vectors ?
			megasas_setup_irqs_msix(instance, 0) :
			megasas_setup_irqs_ioapic(instance))
		goto fail_init_mfi;
6159

6160 6161 6162 6163 6164 6165 6166
	/* 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);
6167
		else {
6168
			instance->skip_heartbeat_timer_del = 1;
6169 6170
			goto fail_init_mfi;
		}
6171 6172
	}

6173
	instance->instancet->enable_intr(instance);
6174
	megasas_setup_jbod_map(instance);
6175 6176
	instance->unload = 0;

6177 6178 6179 6180
	/*
	 * Initiate AEN (Asynchronous Event Notification)
	 */
	if (megasas_start_aen(instance))
6181
		dev_err(&instance->pdev->dev, "Start AEN failed\n");
6182

6183 6184 6185 6186 6187 6188 6189 6190
	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);

6191 6192 6193 6194
	if (instance->pd_info)
		pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
					instance->pd_info,
					instance->pd_info_h);
6195 6196 6197 6198 6199 6200 6201 6202 6203 6204
	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:
6205
fail_reenable_msix:
6206 6207 6208 6209 6210

	pci_disable_device(pdev);

	return -ENODEV;
}
6211 6212 6213 6214
#else
#define megasas_suspend	NULL
#define megasas_resume	NULL
#endif
6215

6216 6217 6218 6219
/**
 * megasas_detach_one -	PCI hot"un"plug entry point
 * @pdev:		PCI device structure
 */
6220
static void megasas_detach_one(struct pci_dev *pdev)
6221 6222 6223 6224
{
	int i;
	struct Scsi_Host *host;
	struct megasas_instance *instance;
6225
	struct fusion_context *fusion;
6226
	u32 pd_seq_map_sz;
6227 6228

	instance = pci_get_drvdata(pdev);
6229
	instance->unload = 1;
6230
	host = instance->host;
6231
	fusion = instance->ctrl_context;
6232

6233 6234 6235 6236
	/* Shutdown SR-IOV heartbeat timer */
	if (instance->requestorId && !instance->skip_heartbeat_timer_del)
		del_timer_sync(&instance->sriov_heartbeat_timer);

6237 6238
	if (instance->fw_crash_state != UNAVAILABLE)
		megasas_free_host_crash_buffer(instance);
6239 6240
	scsi_remove_host(instance->host);
	megasas_flush_cache(instance);
6241
	megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
6242 6243 6244 6245

	/* cancel the delayed work if this work still in queue*/
	if (instance->ev != NULL) {
		struct megasas_aen_event *ev = instance->ev;
6246
		cancel_delayed_work_sync(&ev->hotplug_work);
6247 6248 6249
		instance->ev = NULL;
	}

6250 6251 6252
	/* cancel all wait events */
	wake_up_all(&instance->int_cmd_wait_q);

6253
	tasklet_kill(&instance->isr_tasklet);
6254 6255 6256 6257 6258 6259 6260 6261 6262 6263 6264 6265 6266 6267

	/*
	 * 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;
		}
	}

6268
	instance->instancet->disable_intr(instance);
6269

6270 6271
	megasas_destroy_irqs(instance);

6272
	if (instance->msix_vectors)
6273
		pci_disable_msix(instance->pdev);
6274

6275
	if (instance->ctrl_context) {
6276
		megasas_release_fusion(instance);
6277 6278 6279
			pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
				(sizeof(struct MR_PD_CFG_SEQ) *
					(MAX_PHYSICAL_DEVICES - 1));
6280
		for (i = 0; i < 2 ; i++) {
6281 6282
			if (fusion->ld_map[i])
				dma_free_coherent(&instance->pdev->dev,
6283
						  fusion->max_map_sz,
6284
						  fusion->ld_map[i],
6285 6286 6287 6288
						  fusion->ld_map_phys[i]);
			if (fusion->ld_drv_map[i])
				free_pages((ulong)fusion->ld_drv_map[i],
					fusion->drv_map_pages);
6289 6290 6291 6292 6293
				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]);
6294 6295 6296
		}
		free_pages((ulong)instance->ctrl_context,
			instance->ctrl_context_pages);
6297
	} else {
6298 6299 6300 6301 6302 6303 6304 6305
		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);
	}
6306

6307 6308
	kfree(instance->ctrl_info);

6309 6310 6311
	if (instance->evt_detail)
		pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
				instance->evt_detail, instance->evt_detail_h);
6312

6313 6314 6315 6316
	if (instance->pd_info)
		pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
					instance->pd_info,
					instance->pd_info_h);
6317 6318 6319 6320 6321 6322 6323 6324 6325 6326 6327 6328 6329 6330 6331 6332 6333
	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);

6334 6335 6336 6337
	if (instance->crash_dump_buf)
		pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
			    instance->crash_dump_buf, instance->crash_dump_h);

6338 6339 6340 6341
	if (instance->system_info_buf)
		pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO),
				    instance->system_info_buf, instance->system_info_h);

6342 6343 6344 6345 6346 6347 6348 6349 6350 6351 6352 6353
	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);
6354

6355
	instance->unload = 1;
6356
	megasas_flush_cache(instance);
6357
	megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
6358
	instance->instancet->disable_intr(instance);
6359 6360
	megasas_destroy_irqs(instance);

6361
	if (instance->msix_vectors)
6362
		pci_disable_msix(instance->pdev);
6363 6364 6365 6366 6367 6368 6369 6370 6371 6372 6373 6374 6375 6376 6377 6378 6379 6380 6381 6382 6383 6384 6385 6386 6387 6388
}

/**
 * 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;

6389
	mutex_lock(&megasas_async_queue_mutex);
6390 6391 6392

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

6393
	mutex_unlock(&megasas_async_queue_mutex);
6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405

	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;
}

6406 6407 6408 6409 6410 6411 6412
/**
 * 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;
6413

6414 6415 6416
	poll_wait(file, &megasas_poll_wait, wait);
	spin_lock_irqsave(&poll_aen_lock, flags);
	if (megasas_poll_wait_aen)
6417
		mask = (POLLIN | POLLRDNORM);
6418 6419
	else
		mask = 0;
6420
	megasas_poll_wait_aen = 0;
6421 6422 6423 6424
	spin_unlock_irqrestore(&poll_aen_lock, flags);
	return mask;
}

6425 6426 6427 6428 6429 6430
/*
 * megasas_set_crash_dump_params_ioctl:
 *		Send CRASH_DUMP_MODE DCMD to all controllers
 * @cmd:	MFI command frame
 */

6431
static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
6432 6433 6434 6435 6436 6437 6438 6439 6440 6441
{
	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) {
6442
			if ((atomic_read(&local_instance->adprecovery) ==
6443 6444 6445 6446 6447 6448 6449 6450 6451 6452 6453 6454 6455 6456 6457 6458 6459 6460 6461 6462
				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;
}

6463 6464 6465 6466 6467 6468 6469 6470 6471 6472 6473 6474 6475 6476 6477 6478 6479
/**
 * 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;
6480
	unsigned long *sense_ptr;
6481 6482 6483 6484

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

	if (ioc->sge_count > MAX_IOCTL_SGE) {
6485
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] >  max limit [%d]\n",
6486 6487 6488 6489 6490 6491
		       ioc->sge_count, MAX_IOCTL_SGE);
		return -EINVAL;
	}

	cmd = megasas_get_cmd(instance);
	if (!cmd) {
6492
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
6493 6494 6495 6496 6497 6498 6499 6500 6501 6502
		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);
6503
	cmd->frame->hdr.context = cpu_to_le32(cmd->index);
6504
	cmd->frame->hdr.pad_0 = 0;
6505 6506 6507
	cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
					       MFI_FRAME_SGL64 |
					       MFI_FRAME_SENSE64));
6508

6509 6510 6511 6512 6513 6514
	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;
	}

6515 6516 6517 6518 6519 6520 6521 6522 6523 6524 6525 6526 6527 6528 6529
	/*
	 * 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++) {
6530 6531 6532
		if (!ioc->sgl[i].iov_len)
			continue;

6533
		kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
6534
						    ioc->sgl[i].iov_len,
6535
						    &buf_handle, GFP_KERNEL);
6536
		if (!kbuff_arr[i]) {
6537 6538
			dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
			       "kernel SGL buffer for IOCTL\n");
6539 6540 6541 6542 6543 6544 6545 6546
			error = -ENOMEM;
			goto out;
		}

		/*
		 * We don't change the dma_coherent_mask, so
		 * pci_alloc_consistent only returns 32bit addresses
		 */
6547 6548
		kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
		kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
6549 6550 6551 6552 6553 6554 6555 6556 6557 6558 6559 6560 6561

		/*
		 * 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) {
6562 6563
		sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
					     &sense_handle, GFP_KERNEL);
6564 6565 6566 6567 6568 6569
		if (!sense) {
			error = -ENOMEM;
			goto out;
		}

		sense_ptr =
6570
		(unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
6571
		*sense_ptr = cpu_to_le32(sense_handle);
6572 6573 6574 6575 6576 6577 6578
	}

	/*
	 * Set the sync_cmd flag so that the ISR knows not to complete this
	 * cmd to the SCSI mid-layer
	 */
	cmd->sync_cmd = 1;
6579 6580 6581 6582 6583 6584 6585 6586 6587
	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;
	}

6588 6589
	cmd->sync_cmd = 0;

6590 6591 6592 6593 6594
	if (instance->unload == 1) {
		dev_info(&instance->pdev->dev, "Driver unload is in progress "
			"don't submit data to application\n");
		goto out;
	}
6595 6596 6597 6598 6599 6600 6601 6602 6603 6604 6605 6606 6607 6608 6609 6610
	/*
	 * 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) {
		/*
6611
		 * sense_ptr points to the location that has the user
6612 6613
		 * sense buffer address
		 */
6614 6615
		sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
				ioc->sense_off);
6616

6617 6618
		if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
				 sense, ioc->sense_len)) {
6619
			dev_err(&instance->pdev->dev, "Failed to copy out to user "
6620
					"sense data\n");
6621 6622 6623 6624 6625 6626 6627 6628 6629 6630
			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))) {
6631
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
6632 6633 6634
		error = -EFAULT;
	}

6635
out:
6636
	if (sense) {
6637
		dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
6638 6639 6640
				    sense, sense_handle);
	}

6641 6642 6643
	for (i = 0; i < ioc->sge_count; i++) {
		if (kbuff_arr[i])
			dma_free_coherent(&instance->pdev->dev,
6644
					  le32_to_cpu(kern_sge32[i].length),
6645
					  kbuff_arr[i],
6646
					  le32_to_cpu(kern_sge32[i].phys_addr));
6647
			kbuff_arr[i] = NULL;
6648 6649
	}

6650
	megasas_return_cmd(instance, cmd);
6651 6652 6653 6654 6655 6656 6657 6658 6659 6660
	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;
6661 6662 6663
	int i;
	unsigned long flags;
	u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6664 6665 6666 6667 6668 6669 6670 6671 6672 6673 6674 6675 6676 6677 6678 6679

	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;
	}

6680 6681 6682 6683 6684 6685 6686 6687 6688 6689
	/* 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;
	}

6690
	if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
6691
		dev_err(&instance->pdev->dev, "Controller in crit error\n");
6692 6693 6694 6695 6696 6697 6698 6699 6700
		error = -ENODEV;
		goto out_kfree_ioc;
	}

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

6701 6702 6703 6704
	if (down_interruptible(&instance->ioctl_sem)) {
		error = -ERESTARTSYS;
		goto out_kfree_ioc;
	}
6705 6706 6707 6708

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

		spin_lock_irqsave(&instance->hba_lock, flags);
6709
		if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
6710 6711 6712 6713 6714 6715
			spin_unlock_irqrestore(&instance->hba_lock, flags);
			break;
		}
		spin_unlock_irqrestore(&instance->hba_lock, flags);

		if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6716
			dev_notice(&instance->pdev->dev, "waiting"
6717 6718 6719 6720 6721 6722 6723
				"for controller reset to finish\n");
		}

		msleep(1000);
	}

	spin_lock_irqsave(&instance->hba_lock, flags);
6724
	if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
6725 6726
		spin_unlock_irqrestore(&instance->hba_lock, flags);

6727
		dev_err(&instance->pdev->dev, "timed out while"
6728 6729
			"waiting for HBA to recover\n");
		error = -ENODEV;
6730
		goto out_up;
6731 6732 6733
	}
	spin_unlock_irqrestore(&instance->hba_lock, flags);

6734
	error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
6735
out_up:
6736 6737
	up(&instance->ioctl_sem);

6738
out_kfree_ioc:
6739 6740 6741 6742 6743 6744 6745 6746 6747
	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;
6748 6749 6750
	int i;
	unsigned long flags;
	u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6751 6752 6753 6754 6755 6756 6757 6758 6759 6760 6761 6762 6763 6764 6765

	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;

6766
	if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
6767
		return -ENODEV;
6768 6769 6770 6771 6772 6773
	}

	if (instance->unload == 1) {
		return -ENODEV;
	}

6774 6775 6776
	for (i = 0; i < wait_time; i++) {

		spin_lock_irqsave(&instance->hba_lock, flags);
6777
		if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
6778 6779 6780 6781 6782 6783 6784 6785
			spin_unlock_irqrestore(&instance->hba_lock,
						flags);
			break;
		}

		spin_unlock_irqrestore(&instance->hba_lock, flags);

		if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6786
			dev_notice(&instance->pdev->dev, "waiting for"
6787 6788 6789 6790 6791 6792 6793
				"controller reset to finish\n");
		}

		msleep(1000);
	}

	spin_lock_irqsave(&instance->hba_lock, flags);
6794
	if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
6795
		spin_unlock_irqrestore(&instance->hba_lock, flags);
6796 6797
		dev_err(&instance->pdev->dev, "timed out while waiting"
				"for HBA to recover\n");
6798 6799 6800 6801
		return -ENODEV;
	}
	spin_unlock_irqrestore(&instance->hba_lock, flags);

6802
	mutex_lock(&instance->reset_mutex);
6803 6804
	error = megasas_register_aen(instance, aen.seq_num,
				     aen.class_locale_word);
6805
	mutex_unlock(&instance->reset_mutex);
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 6834
	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;
6835
	compat_uptr_t ptr;
6836 6837 6838
	unsigned long local_raw_ptr;
	u32 local_sense_off;
	u32 local_sense_len;
6839

6840 6841
	if (clear_user(ioc, sizeof(*ioc)))
		return -EFAULT;
6842 6843 6844 6845 6846 6847 6848 6849 6850

	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;

6851 6852 6853 6854 6855
	/*
	 * 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.
	 */
6856 6857 6858 6859 6860 6861 6862
	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) {
6863
		void __user **sense_ioc_ptr =
6864
			(void __user **)((u8*)local_raw_ptr + local_sense_off);
6865 6866 6867 6868 6869 6870
		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;
	}
6871

6872
	for (i = 0; i < MAX_IOCTL_SGE; i++) {
6873 6874 6875 6876 6877 6878 6879 6880 6881 6882 6883 6884 6885 6886 6887 6888 6889 6890 6891 6892 6893 6894
		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) {
6895 6896
	case MEGASAS_IOC_FIRMWARE32:
		return megasas_mgmt_compat_ioctl_fw(file, arg);
6897 6898 6899 6900 6901 6902 6903 6904 6905 6906 6907
	case MEGASAS_IOC_GET_AEN:
		return megasas_mgmt_ioctl_aen(file, arg);
	}

	return -ENOTTY;
}
#endif

/*
 * File operations structure for management interface
 */
6908
static const struct file_operations megasas_mgmt_fops = {
6909 6910 6911 6912
	.owner = THIS_MODULE,
	.open = megasas_mgmt_open,
	.fasync = megasas_mgmt_fasync,
	.unlocked_ioctl = megasas_mgmt_ioctl,
6913
	.poll = megasas_mgmt_poll,
6914 6915 6916
#ifdef CONFIG_COMPAT
	.compat_ioctl = megasas_mgmt_compat_ioctl,
#endif
6917
	.llseek = noop_llseek,
6918 6919 6920 6921 6922 6923 6924 6925 6926 6927
};

/*
 * PCI hotplug support registration structure
 */
static struct pci_driver megasas_pci_driver = {

	.name = "megaraid_sas",
	.id_table = megasas_pci_table,
	.probe = megasas_probe_one,
6928
	.remove = megasas_detach_one,
6929 6930
	.suspend = megasas_suspend,
	.resume = megasas_resume,
6931 6932 6933 6934 6935 6936 6937 6938 6939 6940 6941 6942 6943 6944
	.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);

6945 6946 6947 6948 6949 6950 6951 6952 6953
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);

6954 6955 6956 6957 6958 6959 6960 6961 6962
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);

6963 6964 6965 6966 6967 6968 6969 6970 6971
 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);

6972 6973 6974
static ssize_t
megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
{
6975
	return sprintf(buf, "%u\n", megasas_dbg_lvl);
6976 6977 6978 6979 6980 6981
}

static ssize_t
megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
{
	int retval = count;
6982 6983

	if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
6984 6985 6986 6987 6988 6989
		printk(KERN_ERR "megasas: could not set dbg_lvl\n");
		retval = -EINVAL;
	}
	return retval;
}

6990
static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
6991 6992
		megasas_sysfs_set_dbg_lvl);

6993 6994 6995 6996
static void
megasas_aen_polling(struct work_struct *work)
{
	struct megasas_aen_event *ev =
6997
		container_of(work, struct megasas_aen_event, hotplug_work.work);
6998 6999 7000 7001 7002
	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;
7003
	u16	ld_index = 0;
7004
	int     i, j, doscan = 0;
7005
	u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
7006
	int error;
7007
	u8  dcmd_ret = DCMD_SUCCESS;
7008 7009 7010 7011 7012 7013

	if (!instance) {
		printk(KERN_ERR "invalid instance!\n");
		kfree(ev);
		return;
	}
7014 7015 7016 7017 7018 7019

	/* 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 */
7020
	mutex_lock(&instance->reset_mutex);
7021

7022 7023 7024
	instance->ev = NULL;
	host = instance->host;
	if (instance->evt_detail) {
7025
		megasas_decode_evt(instance);
7026

7027
		switch (le32_to_cpu(instance->evt_detail->code)) {
7028

7029
		case MR_EVT_PD_INSERTED:
7030
		case MR_EVT_PD_REMOVED:
7031
			dcmd_ret = megasas_get_pd_list(instance);
7032
			if (dcmd_ret == DCMD_SUCCESS)
7033
				doscan = SCAN_PD_CHANNEL;
7034 7035 7036
			break;

		case MR_EVT_LD_OFFLINE:
7037
		case MR_EVT_CFG_CLEARED:
7038 7039
		case MR_EVT_LD_DELETED:
		case MR_EVT_LD_CREATED:
7040
			if (!instance->requestorId ||
7041 7042 7043
				(instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0)))
				dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);

7044
			if (dcmd_ret == DCMD_SUCCESS)
7045 7046
				doscan = SCAN_VD_CHANNEL;

7047
			break;
7048

7049
		case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
7050
		case MR_EVT_FOREIGN_CFG_IMPORTED:
7051
		case MR_EVT_LD_STATE_CHANGE:
7052 7053
			dcmd_ret = megasas_get_pd_list(instance);

7054
			if (dcmd_ret != DCMD_SUCCESS)
7055 7056 7057 7058 7059 7060
				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);

7061
			if (dcmd_ret != DCMD_SUCCESS)
7062 7063 7064 7065 7066
				break;

			doscan = SCAN_VD_CHANNEL | SCAN_PD_CHANNEL;
			dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
				instance->host->host_no);
7067
			break;
7068

7069
		case MR_EVT_CTRL_PROP_CHANGED:
7070 7071
				dcmd_ret = megasas_get_ctrl_info(instance);
				break;
7072 7073 7074 7075 7076
		default:
			doscan = 0;
			break;
		}
	} else {
7077
		dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
7078
		mutex_unlock(&instance->reset_mutex);
7079 7080 7081 7082
		kfree(ev);
		return;
	}

7083 7084 7085 7086 7087 7088 7089 7090 7091 7092 7093 7094 7095 7096 7097 7098 7099
	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);
7100 7101 7102 7103
					}
				}
			}
		}
7104
	}
7105

7106 7107 7108 7109 7110 7111 7112 7113 7114 7115 7116 7117 7118 7119
	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);
7120 7121 7122 7123
					}
				}
			}
		}
7124 7125
	}

7126
	if (dcmd_ret == DCMD_SUCCESS)
7127 7128 7129
		seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
	else
		seq_num = instance->last_seq_num;
7130 7131 7132 7133 7134

	/* 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;
7135 7136 7137 7138 7139 7140 7141

	if (instance->aen_cmd != NULL) {
		kfree(ev);
		return;
	}

	mutex_lock(&instance->reset_mutex);
7142 7143 7144
	error = megasas_register_aen(instance, seq_num,
					class_locale.word);
	if (error)
7145 7146
		dev_err(&instance->pdev->dev,
			"register aen failed error %x\n", error);
7147

7148
	mutex_unlock(&instance->reset_mutex);
7149 7150 7151
	kfree(ev);
}

7152 7153 7154 7155 7156 7157 7158 7159 7160 7161
/**
 * megasas_init - Driver load entry point
 */
static int __init megasas_init(void)
{
	int rval;

	/*
	 * Announce driver version and other information
	 */
7162
	pr_info("megasas: %s\n", MEGASAS_VERSION);
7163

7164 7165
	spin_lock_init(&poll_aen_lock);

7166
	support_poll_for_event = 2;
7167
	support_device_change = 1;
7168

7169 7170 7171 7172 7173 7174 7175 7176 7177 7178 7179 7180 7181 7182 7183 7184 7185
	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
	 */
7186
	rval = pci_register_driver(&megasas_pci_driver);
7187 7188

	if (rval) {
7189
		printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
7190 7191 7192 7193 7194 7195 7196
		goto err_pcidrv;
	}

	rval = driver_create_file(&megasas_pci_driver.driver,
				  &driver_attr_version);
	if (rval)
		goto err_dcf_attr_ver;
7197

7198 7199 7200 7201 7202
	rval = driver_create_file(&megasas_pci_driver.driver,
				  &driver_attr_release_date);
	if (rval)
		goto err_dcf_rel_date;

7203 7204 7205 7206 7207
	rval = driver_create_file(&megasas_pci_driver.driver,
				&driver_attr_support_poll_for_event);
	if (rval)
		goto err_dcf_support_poll_for_event;

7208 7209 7210 7211
	rval = driver_create_file(&megasas_pci_driver.driver,
				  &driver_attr_dbg_lvl);
	if (rval)
		goto err_dcf_dbg_lvl;
7212 7213 7214 7215 7216
	rval = driver_create_file(&megasas_pci_driver.driver,
				&driver_attr_support_device_change);
	if (rval)
		goto err_dcf_support_device_change;

7217
	return rval;
7218

7219
err_dcf_support_device_change:
7220 7221
	driver_remove_file(&megasas_pci_driver.driver,
			   &driver_attr_dbg_lvl);
7222
err_dcf_dbg_lvl:
7223 7224 7225
	driver_remove_file(&megasas_pci_driver.driver,
			&driver_attr_support_poll_for_event);
err_dcf_support_poll_for_event:
7226 7227 7228
	driver_remove_file(&megasas_pci_driver.driver,
			   &driver_attr_release_date);
err_dcf_rel_date:
7229 7230 7231 7232 7233
	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");
7234
	return rval;
7235 7236 7237 7238 7239 7240 7241
}

/**
 * megasas_exit - Driver unload entry point
 */
static void __exit megasas_exit(void)
{
7242 7243
	driver_remove_file(&megasas_pci_driver.driver,
			   &driver_attr_dbg_lvl);
7244 7245 7246 7247
	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);
7248 7249
	driver_remove_file(&megasas_pci_driver.driver,
			   &driver_attr_release_date);
7250
	driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
7251 7252 7253 7254 7255 7256 7257

	pci_unregister_driver(&megasas_pci_driver);
	unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
}

module_init(megasas_init);
module_exit(megasas_exit);