megaraid_sas_fusion.c 88.9 KB
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/*
 *  Linux MegaRAID driver for SAS based RAID controllers
 *
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 *  Copyright (c) 2009-2013  LSI Corporation
 *  Copyright (c) 2013-2014  Avago Technologies
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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.
 *
 *  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.
 *
 *  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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 *
 *  FILE: megaraid_sas_fusion.c
 *
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 *  Authors: Avago Technologies
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 *           Sumant Patro
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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>
#include <linux/uaccess.h>
#include <linux/fs.h>
#include <linux/compat.h>
#include <linux/blkdev.h>
#include <linux/mutex.h>
#include <linux/poll.h>

#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
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#include <scsi/scsi_dbg.h>
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#include <linux/dmi.h>
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#include "megaraid_sas_fusion.h"
#include "megaraid_sas.h"

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extern void megasas_free_cmds(struct megasas_instance *instance);
extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
					   *instance);
extern void
megasas_complete_cmd(struct megasas_instance *instance,
		     struct megasas_cmd *cmd, u8 alt_status);
int
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wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
	      int seconds);
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void
megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
int megasas_alloc_cmds(struct megasas_instance *instance);
int
megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs);
int
megasas_issue_polled(struct megasas_instance *instance,
		     struct megasas_cmd *cmd);
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void
megasas_check_and_restore_queue_depth(struct megasas_instance *instance);

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int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
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void megaraid_sas_kill_hba(struct megasas_instance *instance);

extern u32 megasas_dbg_lvl;
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void megasas_sriov_heartbeat_handler(unsigned long instance_addr);
int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
				  int initial);
void megasas_start_timer(struct megasas_instance *instance,
			struct timer_list *timer,
			 void *fn, unsigned long interval);
extern struct megasas_mgmt_info megasas_mgmt_info;
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extern int resetwaittime;
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/**
 * megasas_enable_intr_fusion -	Enables interrupts
 * @regs:			MFI register set
 */
void
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megasas_enable_intr_fusion(struct megasas_instance *instance)
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{
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	struct megasas_register_set __iomem *regs;
	regs = instance->reg_set;
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	instance->mask_interrupts = 0;
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	/* For Thunderbolt/Invader also clear intr on enable */
	writel(~0, &regs->outbound_intr_status);
	readl(&regs->outbound_intr_status);

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

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

/**
 * megasas_disable_intr_fusion - Disables interrupt
 * @regs:			 MFI register set
 */
void
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megasas_disable_intr_fusion(struct megasas_instance *instance)
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{
	u32 mask = 0xFFFFFFFF;
	u32 status;
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	struct megasas_register_set __iomem *regs;
	regs = instance->reg_set;
	instance->mask_interrupts = 1;
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	writel(mask, &regs->outbound_intr_mask);
	/* Dummy readl to force pci flush */
	status = readl(&regs->outbound_intr_mask);
}

int
megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs)
{
	u32 status;
	/*
	 * Check if it is our interrupt
	 */
	status = readl(&regs->outbound_intr_status);

	if (status & 1) {
		writel(status, &regs->outbound_intr_status);
		readl(&regs->outbound_intr_status);
		return 1;
	}
	if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
		return 0;

	return 1;
}

/**
 * megasas_get_cmd_fusion -	Get a command from the free pool
 * @instance:		Adapter soft state
 *
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 * Returns a blk_tag indexed mpt frame
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 */
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inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
						  *instance, u32 blk_tag)
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{
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	struct fusion_context *fusion;
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	fusion = instance->ctrl_context;
	return fusion->cmd_list[blk_tag];
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}

/**
 * megasas_return_cmd_fusion -	Return a cmd to free command pool
 * @instance:		Adapter soft state
 * @cmd:		Command packet to be returned to free command pool
 */
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inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
	struct megasas_cmd_fusion *cmd)
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{
	cmd->scmd = NULL;
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	memset(cmd->io_request, 0, sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
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}

/**
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 * megasas_fire_cmd_fusion -	Sends command to the FW
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 */
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static void
megasas_fire_cmd_fusion(struct megasas_instance *instance,
		union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
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{
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#if defined(writeq) && defined(CONFIG_64BIT)
	u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) |
			le32_to_cpu(req_desc->u.low));

	writeq(req_data, &instance->reg_set->inbound_low_queue_port);
#else
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	unsigned long flags;

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	spin_lock_irqsave(&instance->hba_lock, flags);
	writel(le32_to_cpu(req_desc->u.low),
		&instance->reg_set->inbound_low_queue_port);
	writel(le32_to_cpu(req_desc->u.high),
		&instance->reg_set->inbound_high_queue_port);
	spin_unlock_irqrestore(&instance->hba_lock, flags);
#endif
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}

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/**
 * megasas_teardown_frame_pool_fusion -	Destroy the cmd frame DMA pool
 * @instance:				Adapter soft state
 */
static void megasas_teardown_frame_pool_fusion(
	struct megasas_instance *instance)
{
	int i;
	struct fusion_context *fusion = instance->ctrl_context;

	u16 max_cmd = instance->max_fw_cmds;

	struct megasas_cmd_fusion *cmd;

	if (!fusion->sg_dma_pool || !fusion->sense_dma_pool) {
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		dev_err(&instance->pdev->dev, "dma pool is null. SG Pool %p, "
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		       "sense pool : %p\n", fusion->sg_dma_pool,
		       fusion->sense_dma_pool);
		return;
	}

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

		cmd = fusion->cmd_list[i];

		if (cmd->sg_frame)
			pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame,
				      cmd->sg_frame_phys_addr);

		if (cmd->sense)
			pci_pool_free(fusion->sense_dma_pool, cmd->sense,
				      cmd->sense_phys_addr);
	}

	/*
	 * Now destroy the pool itself
	 */
	pci_pool_destroy(fusion->sg_dma_pool);
	pci_pool_destroy(fusion->sense_dma_pool);

	fusion->sg_dma_pool = NULL;
	fusion->sense_dma_pool = NULL;
}

/**
 * megasas_free_cmds_fusion -	Free all the cmds in the free cmd pool
 * @instance:		Adapter soft state
 */
void
megasas_free_cmds_fusion(struct megasas_instance *instance)
{
	int i;
	struct fusion_context *fusion = instance->ctrl_context;

	u32 max_cmds, req_sz, reply_sz, io_frames_sz;


	req_sz = fusion->request_alloc_sz;
	reply_sz = fusion->reply_alloc_sz;
	io_frames_sz = fusion->io_frames_alloc_sz;

	max_cmds = instance->max_fw_cmds;

	/* Free descriptors and request Frames memory */
	if (fusion->req_frames_desc)
		dma_free_coherent(&instance->pdev->dev, req_sz,
				  fusion->req_frames_desc,
				  fusion->req_frames_desc_phys);

	if (fusion->reply_frames_desc) {
		pci_pool_free(fusion->reply_frames_desc_pool,
			      fusion->reply_frames_desc,
			      fusion->reply_frames_desc_phys);
		pci_pool_destroy(fusion->reply_frames_desc_pool);
	}

	if (fusion->io_request_frames) {
		pci_pool_free(fusion->io_request_frames_pool,
			      fusion->io_request_frames,
			      fusion->io_request_frames_phys);
		pci_pool_destroy(fusion->io_request_frames_pool);
	}

	/* Free the Fusion frame pool */
	megasas_teardown_frame_pool_fusion(instance);

	/* Free all the commands in the cmd_list */
	for (i = 0; i < max_cmds; i++)
		kfree(fusion->cmd_list[i]);

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

}

/**
 * megasas_create_frame_pool_fusion -	Creates DMA pool for cmd frames
 * @instance:			Adapter soft state
 *
 */
static int megasas_create_frame_pool_fusion(struct megasas_instance *instance)
{
	int i;
	u32 max_cmd;
	struct fusion_context *fusion;
	struct megasas_cmd_fusion *cmd;
	u32 total_sz_chain_frame;

	fusion = instance->ctrl_context;
	max_cmd = instance->max_fw_cmds;

	total_sz_chain_frame = MEGASAS_MAX_SZ_CHAIN_FRAME;

	/*
	 * Use DMA pool facility provided by PCI layer
	 */

	fusion->sg_dma_pool = pci_pool_create("megasas sg pool fusion",
					      instance->pdev,
					      total_sz_chain_frame, 4,
					      0);
	if (!fusion->sg_dma_pool) {
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		dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup request pool fusion\n");
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		return -ENOMEM;
	}
	fusion->sense_dma_pool = pci_pool_create("megasas sense pool fusion",
						 instance->pdev,
						 SCSI_SENSE_BUFFERSIZE, 64, 0);

	if (!fusion->sense_dma_pool) {
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		dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool fusion\n");
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		pci_pool_destroy(fusion->sg_dma_pool);
		fusion->sg_dma_pool = NULL;
		return -ENOMEM;
	}

	/*
	 * Allocate and attach a frame to each of the commands in cmd_list
	 */
	for (i = 0; i < max_cmd; i++) {

		cmd = fusion->cmd_list[i];

		cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool,
					       GFP_KERNEL,
					       &cmd->sg_frame_phys_addr);

		cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
					    GFP_KERNEL, &cmd->sense_phys_addr);
		/*
		 * megasas_teardown_frame_pool_fusion() takes care of freeing
		 * whatever has been allocated
		 */
		if (!cmd->sg_frame || !cmd->sense) {
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			dev_printk(KERN_DEBUG, &instance->pdev->dev, "pci_pool_alloc failed\n");
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			megasas_teardown_frame_pool_fusion(instance);
			return -ENOMEM;
		}
	}
	return 0;
}

/**
 * megasas_alloc_cmds_fusion -	Allocates the command packets
 * @instance:		Adapter soft state
 *
 *
 * Each frame has a 32-bit field called context. This context is used to get
 * back the megasas_cmd_fusion from the frame when a frame gets completed
 * 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_fusion given the context.
 * The free commands themselves are maintained in a linked list called cmd_pool.
 *
 * cmds are formed in the io_request and sg_frame members of the
 * megasas_cmd_fusion. The context field is used to get a request descriptor
 * and is used as SMID of the cmd.
 * SMID value range is from 1 to max_fw_cmds.
 */
int
megasas_alloc_cmds_fusion(struct megasas_instance *instance)
{
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	int i, j, count;
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	u32 max_cmd, io_frames_sz;
	struct fusion_context *fusion;
	struct megasas_cmd_fusion *cmd;
	union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
	u32 offset;
	dma_addr_t io_req_base_phys;
	u8 *io_req_base;

	fusion = instance->ctrl_context;

	max_cmd = instance->max_fw_cmds;

	fusion->req_frames_desc =
		dma_alloc_coherent(&instance->pdev->dev,
				   fusion->request_alloc_sz,
				   &fusion->req_frames_desc_phys, GFP_KERNEL);

	if (!fusion->req_frames_desc) {
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		dev_err(&instance->pdev->dev, "Could not allocate memory for "
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		       "request_frames\n");
		goto fail_req_desc;
	}

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	count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
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	fusion->reply_frames_desc_pool =
		pci_pool_create("reply_frames pool", instance->pdev,
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				fusion->reply_alloc_sz * count, 16, 0);
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	if (!fusion->reply_frames_desc_pool) {
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		dev_err(&instance->pdev->dev, "Could not allocate memory for "
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		       "reply_frame pool\n");
		goto fail_reply_desc;
	}

	fusion->reply_frames_desc =
		pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL,
			       &fusion->reply_frames_desc_phys);
	if (!fusion->reply_frames_desc) {
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		dev_err(&instance->pdev->dev, "Could not allocate memory for "
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		       "reply_frame pool\n");
		pci_pool_destroy(fusion->reply_frames_desc_pool);
		goto fail_reply_desc;
	}

	reply_desc = fusion->reply_frames_desc;
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	for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
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		reply_desc->Words = cpu_to_le64(ULLONG_MAX);
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	io_frames_sz = fusion->io_frames_alloc_sz;

	fusion->io_request_frames_pool =
		pci_pool_create("io_request_frames pool", instance->pdev,
				fusion->io_frames_alloc_sz, 16, 0);

	if (!fusion->io_request_frames_pool) {
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		dev_err(&instance->pdev->dev, "Could not allocate memory for "
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		       "io_request_frame pool\n");
		goto fail_io_frames;
	}

	fusion->io_request_frames =
		pci_pool_alloc(fusion->io_request_frames_pool, GFP_KERNEL,
			       &fusion->io_request_frames_phys);
	if (!fusion->io_request_frames) {
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		dev_err(&instance->pdev->dev, "Could not allocate memory for "
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		       "io_request_frames frames\n");
		pci_pool_destroy(fusion->io_request_frames_pool);
		goto fail_io_frames;
	}

	/*
	 * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
	 * Allocate the dynamic array first and then allocate individual
	 * commands.
	 */
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	fusion->cmd_list = kzalloc(sizeof(struct megasas_cmd_fusion *)
				   * max_cmd, GFP_KERNEL);
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	if (!fusion->cmd_list) {
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		dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory. Could not alloc "
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		       "memory for cmd_list_fusion\n");
		goto fail_cmd_list;
	}

	max_cmd = instance->max_fw_cmds;
	for (i = 0; i < max_cmd; i++) {
		fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion),
					      GFP_KERNEL);
		if (!fusion->cmd_list[i]) {
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			dev_err(&instance->pdev->dev, "Could not alloc cmd list fusion\n");
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			for (j = 0; j < i; j++)
				kfree(fusion->cmd_list[j]);

			kfree(fusion->cmd_list);
			fusion->cmd_list = NULL;
			goto fail_cmd_list;
		}
	}

	/* The first 256 bytes (SMID 0) is not used. Don't add to cmd list */
	io_req_base = fusion->io_request_frames +
		MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
	io_req_base_phys = fusion->io_request_frames_phys +
		MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;

	/*
	 * Add all the commands to command pool (fusion->cmd_pool)
	 */

	/* SMID 0 is reserved. Set SMID/index from 1 */
	for (i = 0; i < max_cmd; i++) {
		cmd = fusion->cmd_list[i];
		offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
		memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
		cmd->index = i + 1;
		cmd->scmd = NULL;
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		cmd->sync_cmd_idx = (i >= instance->max_scsi_cmds) ?
				(i - instance->max_scsi_cmds) :
				(u32)ULONG_MAX; /* Set to Invalid */
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		cmd->instance = instance;
		cmd->io_request =
			(struct MPI2_RAID_SCSI_IO_REQUEST *)
		  (io_req_base + offset);
		memset(cmd->io_request, 0,
		       sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
		cmd->io_request_phys_addr = io_req_base_phys + offset;
	}

	/*
	 * Create a frame pool and assign one frame to each cmd
	 */
	if (megasas_create_frame_pool_fusion(instance)) {
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		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
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		megasas_free_cmds_fusion(instance);
		goto fail_req_desc;
	}

	return 0;

fail_cmd_list:
	pci_pool_free(fusion->io_request_frames_pool, fusion->io_request_frames,
		      fusion->io_request_frames_phys);
	pci_pool_destroy(fusion->io_request_frames_pool);
fail_io_frames:
	dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
			  fusion->reply_frames_desc,
			  fusion->reply_frames_desc_phys);
	pci_pool_free(fusion->reply_frames_desc_pool,
		      fusion->reply_frames_desc,
		      fusion->reply_frames_desc_phys);
	pci_pool_destroy(fusion->reply_frames_desc_pool);

fail_reply_desc:
	dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
			  fusion->req_frames_desc,
			  fusion->req_frames_desc_phys);
fail_req_desc:
	return -ENOMEM;
}

/**
 * wait_and_poll -	Issues a polling command
 * @instance:			Adapter soft state
 * @cmd:			Command packet to be issued
 *
 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
 */
int
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wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
	int seconds)
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{
	int i;
	struct megasas_header *frame_hdr = &cmd->frame->hdr;
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	struct fusion_context *fusion;
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	u32 msecs = seconds * 1000;
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	fusion = instance->ctrl_context;
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	/*
	 * Wait for cmd_status to change
	 */
	for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
		rmb();
		msleep(20);
	}

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	if (frame_hdr->cmd_status == 0xff)
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		return -ETIME;

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	return (frame_hdr->cmd_status == MFI_STAT_OK) ?
		0 : 1;
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}

/**
 * megasas_ioc_init_fusion -	Initializes the FW
 * @instance:		Adapter soft state
 *
 * Issues the IOC Init cmd
 */
int
megasas_ioc_init_fusion(struct megasas_instance *instance)
{
	struct megasas_init_frame *init_frame;
	struct MPI2_IOC_INIT_REQUEST *IOCInitMessage;
	dma_addr_t	ioc_init_handle;
	struct megasas_cmd *cmd;
	u8 ret;
	struct fusion_context *fusion;
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	union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
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	int i;
	struct megasas_header *frame_hdr;
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	const char *sys_info;
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	MFI_CAPABILITIES *drv_ops;
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	fusion = instance->ctrl_context;

	cmd = megasas_get_cmd(instance);

	if (!cmd) {
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		dev_err(&instance->pdev->dev, "Could not allocate cmd for INIT Frame\n");
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		ret = 1;
		goto fail_get_cmd;
	}

	IOCInitMessage =
	  dma_alloc_coherent(&instance->pdev->dev,
			     sizeof(struct MPI2_IOC_INIT_REQUEST),
			     &ioc_init_handle, GFP_KERNEL);

	if (!IOCInitMessage) {
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		dev_err(&instance->pdev->dev, "Could not allocate memory for "
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		       "IOCInitMessage\n");
		ret = 1;
		goto fail_fw_init;
	}

	memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));

	IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
	IOCInitMessage->WhoInit	= MPI2_WHOINIT_HOST_DRIVER;
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	IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
	IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
	IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);

	IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
	IOCInitMessage->ReplyDescriptorPostQueueAddress	= cpu_to_le64(fusion->reply_frames_desc_phys);
	IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
643
	IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
644 645 646 647 648
	init_frame = (struct megasas_init_frame *)cmd->frame;
	memset(init_frame, 0, MEGAMFI_FRAME_SIZE);

	frame_hdr = &cmd->frame->hdr;
	frame_hdr->cmd_status = 0xFF;
649 650 651
	frame_hdr->flags = cpu_to_le16(
		le16_to_cpu(frame_hdr->flags) |
		MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
652 653 654 655

	init_frame->cmd	= MFI_CMD_INIT;
	init_frame->cmd_status = 0xFF;

656 657
	drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);

658 659 660
	/* driver support Extended MSIX */
	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
		(instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
661
		drv_ops->mfi_capabilities.support_additional_msix = 1;
662
	/* driver supports HA / Remote LUN over Fast Path interface */
663 664 665 666 667 668
	drv_ops->mfi_capabilities.support_fp_remote_lun = 1;

	drv_ops->mfi_capabilities.support_max_255lds = 1;
	drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1;
	drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1;

669 670
	/* Convert capability to LE32 */
	cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
671

672 673 674 675 676 677 678 679 680 681
	sys_info = dmi_get_system_info(DMI_PRODUCT_UUID);
	if (instance->system_info_buf && sys_info) {
		memcpy(instance->system_info_buf->systemId, sys_info,
			strlen(sys_info) > 64 ? 64 : strlen(sys_info));
		instance->system_info_buf->systemIdLength =
			strlen(sys_info) > 64 ? 64 : strlen(sys_info);
		init_frame->system_info_lo = instance->system_info_h;
		init_frame->system_info_hi = 0;
	}

682 683 684 685
	init_frame->queue_info_new_phys_addr_hi =
		cpu_to_le32(upper_32_bits(ioc_init_handle));
	init_frame->queue_info_new_phys_addr_lo =
		cpu_to_le32(lower_32_bits(ioc_init_handle));
686
	init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
687

688 689
	req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
	req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
690
	req_desc.MFAIo.RequestFlags =
691
		(MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
692
		MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
693 694 695 696

	/*
	 * disable the intr before firing the init frame
	 */
697
	instance->instancet->disable_intr(instance);
698 699 700 701 702 703 704 705

	for (i = 0; i < (10 * 1000); i += 20) {
		if (readl(&instance->reg_set->doorbell) & 1)
			msleep(20);
		else
			break;
	}

706
	megasas_fire_cmd_fusion(instance, &req_desc);
707

708
	wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS);
709 710 711 712 713 714

	frame_hdr = &cmd->frame->hdr;
	if (frame_hdr->cmd_status != 0) {
		ret = 1;
		goto fail_fw_init;
	}
715
	dev_err(&instance->pdev->dev, "Init cmd success\n");
716 717 718 719 720 721 722 723 724 725 726 727 728

	ret = 0;

fail_fw_init:
	megasas_return_cmd(instance, cmd);
	if (IOCInitMessage)
		dma_free_coherent(&instance->pdev->dev,
				  sizeof(struct MPI2_IOC_INIT_REQUEST),
				  IOCInitMessage, ioc_init_handle);
fail_get_cmd:
	return ret;
}

729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805
/**
 * megasas_sync_pd_seq_num -	JBOD SEQ MAP
 * @instance:		Adapter soft state
 * @pend:		set to 1, if it is pended jbod map.
 *
 * Issue Jbod map to the firmware. If it is pended command,
 * issue command and return. If it is first instance of jbod map
 * issue and receive command.
 */
int
megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
	int ret = 0;
	u32 pd_seq_map_sz;
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;
	struct fusion_context *fusion = instance->ctrl_context;
	struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
	dma_addr_t pd_seq_h;

	pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)];
	pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)];
	pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
			(sizeof(struct MR_PD_CFG_SEQ) *
			(MAX_PHYSICAL_DEVICES - 1));

	cmd = megasas_get_cmd(instance);
	if (!cmd) {
		dev_err(&instance->pdev->dev,
			"Could not get mfi cmd. Fail from %s %d\n",
			__func__, __LINE__);
		return -ENOMEM;
	}

	dcmd = &cmd->frame->dcmd;

	memset(pd_sync, 0, pd_seq_map_sz);
	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
	dcmd->cmd = MFI_CMD_DCMD;
	dcmd->cmd_status = 0xFF;
	dcmd->sge_count = 1;
	dcmd->timeout = 0;
	dcmd->pad_0 = 0;
	dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz);
	dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO);
	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(pd_seq_h);
	dcmd->sgl.sge32[0].length = cpu_to_le32(pd_seq_map_sz);

	if (pend) {
		dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
		dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE);
		instance->jbod_seq_cmd = cmd;
		instance->instancet->issue_dcmd(instance, cmd);
		return 0;
	}

	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);

	/* Below code is only for non pended DCMD */
	if (instance->ctrl_context && !instance->mask_interrupts)
		ret = megasas_issue_blocked_cmd(instance, cmd, 60);
	else
		ret = megasas_issue_polled(instance, cmd);

	if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) {
		dev_warn(&instance->pdev->dev,
			"driver supports max %d JBOD, but FW reports %d\n",
			MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count));
		ret = -EINVAL;
	}

	if (!ret)
		instance->pd_seq_map_id++;

	megasas_return_cmd(instance, cmd);
	return ret;
}

806 807 808 809 810 811 812
/*
 * megasas_get_ld_map_info -	Returns FW's ld_map structure
 * @instance:				Adapter soft state
 * @pend:				Pend the command or not
 * 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.
813 814 815 816 817 818 819
 * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
 * dcmd.mbox.b[0]	- number of LDs being sync'd
 * dcmd.mbox.b[1]	- 0 - complete command immediately.
 *			- 1 - pend till config change
 * dcmd.mbox.b[2]	- 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
 *			- 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
 *				uses extended struct MR_FW_RAID_MAP_EXT
820 821 822 823 824 825 826
 */
static int
megasas_get_ld_map_info(struct megasas_instance *instance)
{
	int ret = 0;
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;
827
	void *ci;
828 829 830 831 832 833 834
	dma_addr_t ci_h = 0;
	u32 size_map_info;
	struct fusion_context *fusion;

	cmd = megasas_get_cmd(instance);

	if (!cmd) {
835
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n");
836 837 838 839 840 841 842
		return -ENOMEM;
	}

	fusion = instance->ctrl_context;

	if (!fusion) {
		megasas_return_cmd(instance, cmd);
843
		return -ENXIO;
844 845 846 847
	}

	dcmd = &cmd->frame->dcmd;

848
	size_map_info = fusion->current_map_sz;
849

850
	ci = (void *) fusion->ld_map[(instance->map_id & 1)];
851 852 853
	ci_h = fusion->ld_map_phys[(instance->map_id & 1)];

	if (!ci) {
854
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n");
855 856 857 858
		megasas_return_cmd(instance, cmd);
		return -ENOMEM;
	}

859
	memset(ci, 0, fusion->max_map_sz);
860
	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
861 862 863 864 865
#if VD_EXT_DEBUG
	dev_dbg(&instance->pdev->dev,
		"%s sending MR_DCMD_LD_MAP_GET_INFO with size %d\n",
		__func__, cpu_to_le32(size_map_info));
#endif
866 867 868
	dcmd->cmd = MFI_CMD_DCMD;
	dcmd->cmd_status = 0xFF;
	dcmd->sge_count = 1;
869
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
870 871
	dcmd->timeout = 0;
	dcmd->pad_0 = 0;
872 873 874 875
	dcmd->data_xfer_len = cpu_to_le32(size_map_info);
	dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
	dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
876

877 878 879 880 881
	if (instance->ctrl_context && !instance->mask_interrupts)
		ret = megasas_issue_blocked_cmd(instance, cmd,
			MEGASAS_BLOCKED_CMD_TIMEOUT);
	else
		ret = megasas_issue_polled(instance, cmd);
882

883
	megasas_return_cmd(instance, cmd);
884 885 886 887 888 889 890 891 892 893 894

	return ret;
}

u8
megasas_get_map_info(struct megasas_instance *instance)
{
	struct fusion_context *fusion = instance->ctrl_context;

	fusion->fast_path_io = 0;
	if (!megasas_get_ld_map_info(instance)) {
895
		if (MR_ValidateMapInfo(instance)) {
896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919
			fusion->fast_path_io = 1;
			return 0;
		}
	}
	return 1;
}

/*
 * megasas_sync_map_info -	Returns FW's ld_map structure
 * @instance:				Adapter soft state
 *
 * 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.
 */
int
megasas_sync_map_info(struct megasas_instance *instance)
{
	int ret = 0, i;
	struct megasas_cmd *cmd;
	struct megasas_dcmd_frame *dcmd;
	u32 size_sync_info, num_lds;
	struct fusion_context *fusion;
	struct MR_LD_TARGET_SYNC *ci = NULL;
920
	struct MR_DRV_RAID_MAP_ALL *map;
921 922 923 924 925 926 927 928
	struct MR_LD_RAID  *raid;
	struct MR_LD_TARGET_SYNC *ld_sync;
	dma_addr_t ci_h = 0;
	u32 size_map_info;

	cmd = megasas_get_cmd(instance);

	if (!cmd) {
929
		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n");
930 931 932 933 934 935 936 937 938 939
		return -ENOMEM;
	}

	fusion = instance->ctrl_context;

	if (!fusion) {
		megasas_return_cmd(instance, cmd);
		return 1;
	}

940
	map = fusion->ld_drv_map[instance->map_id & 1];
941

942
	num_lds = le16_to_cpu(map->raidMap.ldCount);
943 944 945 946 947 948 949 950 951

	dcmd = &cmd->frame->dcmd;

	size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;

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

	ci = (struct MR_LD_TARGET_SYNC *)
	  fusion->ld_map[(instance->map_id - 1) & 1];
952
	memset(ci, 0, fusion->max_map_sz);
953 954 955 956 957 958 959 960 961 962 963

	ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];

	ld_sync = (struct MR_LD_TARGET_SYNC *)ci;

	for (i = 0; i < num_lds; i++, ld_sync++) {
		raid = MR_LdRaidGet(i, map);
		ld_sync->targetId = MR_GetLDTgtId(i, map);
		ld_sync->seqNum = raid->seqNum;
	}

964
	size_map_info = fusion->current_map_sz;
965 966 967 968

	dcmd->cmd = MFI_CMD_DCMD;
	dcmd->cmd_status = 0xFF;
	dcmd->sge_count = 1;
969
	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE);
970 971
	dcmd->timeout = 0;
	dcmd->pad_0 = 0;
972
	dcmd->data_xfer_len = cpu_to_le32(size_map_info);
973 974
	dcmd->mbox.b[0] = num_lds;
	dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
975 976 977
	dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
	dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
978 979 980 981 982 983 984 985

	instance->map_update_cmd = cmd;

	instance->instancet->issue_dcmd(instance, cmd);

	return ret;
}

986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045
/*
 * meagasas_display_intel_branding - Display branding string
 * @instance: per adapter object
 *
 * Return nothing.
 */
static void
megasas_display_intel_branding(struct megasas_instance *instance)
{
	if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
		return;

	switch (instance->pdev->device) {
	case PCI_DEVICE_ID_LSI_INVADER:
		switch (instance->pdev->subsystem_device) {
		case MEGARAID_INTEL_RS3DC080_SSDID:
			dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
				instance->host->host_no,
				MEGARAID_INTEL_RS3DC080_BRANDING);
			break;
		case MEGARAID_INTEL_RS3DC040_SSDID:
			dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
				instance->host->host_no,
				MEGARAID_INTEL_RS3DC040_BRANDING);
			break;
		case MEGARAID_INTEL_RS3SC008_SSDID:
			dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
				instance->host->host_no,
				MEGARAID_INTEL_RS3SC008_BRANDING);
			break;
		case MEGARAID_INTEL_RS3MC044_SSDID:
			dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
				instance->host->host_no,
				MEGARAID_INTEL_RS3MC044_BRANDING);
			break;
		default:
			break;
		}
		break;
	case PCI_DEVICE_ID_LSI_FURY:
		switch (instance->pdev->subsystem_device) {
		case MEGARAID_INTEL_RS3WC080_SSDID:
			dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
				instance->host->host_no,
				MEGARAID_INTEL_RS3WC080_BRANDING);
			break;
		case MEGARAID_INTEL_RS3WC040_SSDID:
			dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
				instance->host->host_no,
				MEGARAID_INTEL_RS3WC040_BRANDING);
			break;
		default:
			break;
		}
		break;
	default:
		break;
	}
}

1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057
/**
 * megasas_init_adapter_fusion -	Initializes the FW
 * @instance:		Adapter soft state
 *
 * This is the main function for initializing firmware.
 */
u32
megasas_init_adapter_fusion(struct megasas_instance *instance)
{
	struct megasas_register_set __iomem *reg_set;
	struct fusion_context *fusion;
	u32 max_cmd;
1058
	int i = 0, count;
1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076

	fusion = instance->ctrl_context;

	reg_set = instance->reg_set;

	/*
	 * Get various operational parameters from status register
	 */
	instance->max_fw_cmds =
		instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
	instance->max_fw_cmds = min(instance->max_fw_cmds, (u16)1008);

	/*
	 * 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;
1077 1078 1079 1080 1081 1082

	/*
	 * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
	 */
	instance->max_mfi_cmds =
		MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1083 1084 1085

	max_cmd = instance->max_fw_cmds;

1086
	fusion->reply_q_depth = 2 * (((max_cmd + 1 + 15)/16)*16);
1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102

	fusion->request_alloc_sz =
		sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd;
	fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)
		*(fusion->reply_q_depth);
	fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
		(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE *
		 (max_cmd + 1)); /* Extra 1 for SMID 0 */

	fusion->max_sge_in_main_msg =
	  (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
	   offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;

	fusion->max_sge_in_chain =
		MEGASAS_MAX_SZ_CHAIN_FRAME / sizeof(union MPI2_SGE_IO_UNION);

1103 1104
	instance->max_num_sge = rounddown_pow_of_two(
		fusion->max_sge_in_main_msg + fusion->max_sge_in_chain - 2);
1105 1106 1107 1108 1109 1110 1111 1112 1113

	/* Used for pass thru MFI frame (DCMD) */
	fusion->chain_offset_mfi_pthru =
		offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;

	fusion->chain_offset_io_request =
		(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
		 sizeof(union MPI2_SGE_IO_UNION))/16;

1114 1115 1116
	count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
	for (i = 0 ; i < count; i++)
		fusion->last_reply_idx[i] = 0;
1117

1118 1119 1120 1121 1122 1123 1124 1125 1126
	/*
	 * For fusion adapters, 3 commands for IOCTL and 5 commands
	 * for driver's internal DCMDs.
	 */
	instance->max_scsi_cmds = instance->max_fw_cmds -
				(MEGASAS_FUSION_INTERNAL_CMDS +
				MEGASAS_FUSION_IOCTL_CMDS);
	sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);

1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138
	/*
	 * Allocate memory for descriptors
	 * Create a pool of commands
	 */
	if (megasas_alloc_cmds(instance))
		goto fail_alloc_mfi_cmds;
	if (megasas_alloc_cmds_fusion(instance))
		goto fail_alloc_cmds;

	if (megasas_ioc_init_fusion(instance))
		goto fail_ioc_init;

1139
	megasas_display_intel_branding(instance);
1140
	if (megasas_get_ctrl_info(instance)) {
1141 1142 1143 1144 1145 1146
		dev_err(&instance->pdev->dev,
			"Could not get controller info. Fail from %s %d\n",
			__func__, __LINE__);
		goto fail_ioc_init;
	}

1147
	instance->flag_ieee = 1;
1148
	fusion->fast_path_io = 0;
1149

1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163
	fusion->drv_map_pages = get_order(fusion->drv_map_sz);
	for (i = 0; i < 2; i++) {
		fusion->ld_map[i] = NULL;
		fusion->ld_drv_map[i] = (void *)__get_free_pages(GFP_KERNEL,
			fusion->drv_map_pages);
		if (!fusion->ld_drv_map[i]) {
			dev_err(&instance->pdev->dev, "Could not allocate "
				"memory for local map info for %d pages\n",
				fusion->drv_map_pages);
			if (i == 1)
				free_pages((ulong)fusion->ld_drv_map[0],
					fusion->drv_map_pages);
			goto fail_ioc_init;
		}
1164 1165
		memset(fusion->ld_drv_map[i], 0,
			((1 << PAGE_SHIFT) << fusion->drv_map_pages));
1166 1167
	}

1168 1169
	for (i = 0; i < 2; i++) {
		fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1170
						       fusion->max_map_sz,
1171 1172 1173
						       &fusion->ld_map_phys[i],
						       GFP_KERNEL);
		if (!fusion->ld_map[i]) {
1174
			dev_err(&instance->pdev->dev, "Could not allocate memory "
1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186
			       "for map info\n");
			goto fail_map_info;
		}
	}

	if (!megasas_get_map_info(instance))
		megasas_sync_map_info(instance);

	return 0;

fail_map_info:
	if (i == 1)
1187
		dma_free_coherent(&instance->pdev->dev, fusion->max_map_sz,
1188 1189
				  fusion->ld_map[0], fusion->ld_map_phys[0]);
fail_ioc_init:
1190 1191 1192 1193
	megasas_free_cmds_fusion(instance);
fail_alloc_cmds:
	megasas_free_cmds(instance);
fail_alloc_mfi_cmds:
1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234
	return 1;
}

/**
 * map_cmd_status -	Maps FW cmd status to OS cmd status
 * @cmd :		Pointer to cmd
 * @status :		status of cmd returned by FW
 * @ext_status :	ext status of cmd returned by FW
 */

void
map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status)
{

	switch (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) | ext_status;
		break;

	case MFI_STAT_SCSI_DONE_WITH_ERROR:

		cmd->scmd->result = (DID_OK << 16) | ext_status;
		if (ext_status == SAM_STAT_CHECK_CONDITION) {
			memset(cmd->scmd->sense_buffer, 0,
			       SCSI_SENSE_BUFFERSIZE);
			memcpy(cmd->scmd->sense_buffer, cmd->sense,
			       SCSI_SENSE_BUFFERSIZE);
			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;
1235 1236 1237
	case MFI_STAT_CONFIG_SEQ_MISMATCH:
		cmd->scmd->result = DID_IMM_RETRY << 16;
		break;
1238
	default:
1239
		dev_printk(KERN_DEBUG, &cmd->instance->pdev->dev, "FW status %#x\n", status);
1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259
		cmd->scmd->result = DID_ERROR << 16;
		break;
	}
}

/**
 * megasas_make_sgl_fusion -	Prepares 32-bit SGL
 * @instance:		Adapter soft state
 * @scp:		SCSI command from the mid-layer
 * @sgl_ptr:		SGL to be filled in
 * @cmd:		cmd we are working on
 *
 * If successful, this function returns the number of SG elements.
 */
static int
megasas_make_sgl_fusion(struct megasas_instance *instance,
			struct scsi_cmnd *scp,
			struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
			struct megasas_cmd_fusion *cmd)
{
1260
	int i, sg_processed, sge_count;
1261 1262 1263 1264 1265
	struct scatterlist *os_sgl;
	struct fusion_context *fusion;

	fusion = instance->ctrl_context;

1266 1267
	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
		(instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1268 1269 1270 1271
		struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
		sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
		sgl_ptr_end->Flags = 0;
	}
1272 1273 1274 1275 1276 1277 1278 1279 1280

	sge_count = scsi_dma_map(scp);

	BUG_ON(sge_count < 0);

	if (sge_count > instance->max_num_sge || !sge_count)
		return sge_count;

	scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1281 1282
		sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
		sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
1283
		sgl_ptr->Flags = 0;
1284 1285
		if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
			(instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1286 1287 1288
			if (i == sge_count - 1)
				sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
		}
1289 1290 1291 1292 1293 1294 1295 1296
		sgl_ptr++;

		sg_processed = i + 1;

		if ((sg_processed ==  (fusion->max_sge_in_main_msg - 1)) &&
		    (sge_count > fusion->max_sge_in_main_msg)) {

			struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
1297 1298 1299 1300
			if ((instance->pdev->device ==
				PCI_DEVICE_ID_LSI_INVADER) ||
				(instance->pdev->device ==
				PCI_DEVICE_ID_LSI_FURY)) {
1301 1302 1303
				if ((le16_to_cpu(cmd->io_request->IoFlags) &
					MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
					MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
1304 1305 1306 1307 1308 1309 1310 1311 1312
					cmd->io_request->ChainOffset =
						fusion->
						chain_offset_io_request;
				else
					cmd->io_request->ChainOffset = 0;
			} else
				cmd->io_request->ChainOffset =
					fusion->chain_offset_io_request;

1313 1314 1315
			sg_chain = sgl_ptr;
			/* Prepare chain element */
			sg_chain->NextChainOffset = 0;
1316 1317 1318 1319
			if ((instance->pdev->device ==
				PCI_DEVICE_ID_LSI_INVADER) ||
				(instance->pdev->device ==
				PCI_DEVICE_ID_LSI_FURY))
1320 1321 1322 1323 1324
				sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
			else
				sg_chain->Flags =
					(IEEE_SGE_FLAGS_CHAIN_ELEMENT |
					 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
1325 1326
			sg_chain->Length =  cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
			sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
1327 1328 1329

			sgl_ptr =
			  (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
1330
			memset(sgl_ptr, 0, MEGASAS_MAX_SZ_CHAIN_FRAME);
1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347
		}
	}

	return sge_count;
}

/**
 * megasas_set_pd_lba -	Sets PD LBA
 * @cdb:		CDB
 * @cdb_len:		cdb length
 * @start_blk:		Start block of IO
 *
 * Used to set the PD LBA in CDB for FP IOs
 */
void
megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
		   struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
1348
		   struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
1349 1350 1351 1352 1353 1354
{
	struct MR_LD_RAID *raid;
	u32 ld;
	u64 start_blk = io_info->pdBlock;
	u8 *cdb = io_request->CDB.CDB32;
	u32 num_blocks = io_info->numBlocks;
1355
	u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383

	/* Check if T10 PI (DIF) is enabled for this LD */
	ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
	raid = MR_LdRaidGet(ld, local_map_ptr);
	if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
		memset(cdb, 0, sizeof(io_request->CDB.CDB32));
		cdb[0] =  MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
		cdb[7] =  MEGASAS_SCSI_ADDL_CDB_LEN;

		if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
			cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
		else
			cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
		cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;

		/* LBA */
		cdb[12] = (u8)((start_blk >> 56) & 0xff);
		cdb[13] = (u8)((start_blk >> 48) & 0xff);
		cdb[14] = (u8)((start_blk >> 40) & 0xff);
		cdb[15] = (u8)((start_blk >> 32) & 0xff);
		cdb[16] = (u8)((start_blk >> 24) & 0xff);
		cdb[17] = (u8)((start_blk >> 16) & 0xff);
		cdb[18] = (u8)((start_blk >> 8) & 0xff);
		cdb[19] = (u8)(start_blk & 0xff);

		/* Logical block reference tag */
		io_request->CDB.EEDP32.PrimaryReferenceTag =
			cpu_to_be32(ref_tag);
1384
		io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
1385
		io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
1386 1387 1388 1389 1390 1391 1392 1393 1394

		/* Transfer length */
		cdb[28] = (u8)((num_blocks >> 24) & 0xff);
		cdb[29] = (u8)((num_blocks >> 16) & 0xff);
		cdb[30] = (u8)((num_blocks >> 8) & 0xff);
		cdb[31] = (u8)(num_blocks & 0xff);

		/* set SCSI IO EEDPFlags */
		if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) {
1395
			io_request->EEDPFlags = cpu_to_le16(
1396 1397 1398 1399
				MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG  |
				MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
				MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
				MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
1400
				MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
1401
		} else {
1402
			io_request->EEDPFlags = cpu_to_le16(
1403
				MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1404
				MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
1405
		}
1406 1407
		io_request->Control |= cpu_to_le32((0x4 << 26));
		io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434
	} else {
		/* Some drives don't support 16/12 byte CDB's, convert to 10 */
		if (((cdb_len == 12) || (cdb_len == 16)) &&
		    (start_blk <= 0xffffffff)) {
			if (cdb_len == 16) {
				opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
				flagvals = cdb[1];
				groupnum = cdb[14];
				control = cdb[15];
			} else {
				opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
				flagvals = cdb[1];
				groupnum = cdb[10];
				control = cdb[11];
			}

			memset(cdb, 0, sizeof(io_request->CDB.CDB32));

			cdb[0] = opcode;
			cdb[1] = flagvals;
			cdb[6] = groupnum;
			cdb[9] = control;

			/* Transfer length */
			cdb[8] = (u8)(num_blocks & 0xff);
			cdb[7] = (u8)((num_blocks >> 8) & 0xff);

1435
			io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
1436
			cdb_len = 10;
1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472
		} else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
			/* Convert to 16 byte CDB for large LBA's */
			switch (cdb_len) {
			case 6:
				opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
				control = cdb[5];
				break;
			case 10:
				opcode =
					cdb[0] == READ_10 ? READ_16 : WRITE_16;
				flagvals = cdb[1];
				groupnum = cdb[6];
				control = cdb[9];
				break;
			case 12:
				opcode =
					cdb[0] == READ_12 ? READ_16 : WRITE_16;
				flagvals = cdb[1];
				groupnum = cdb[10];
				control = cdb[11];
				break;
			}

			memset(cdb, 0, sizeof(io_request->CDB.CDB32));

			cdb[0] = opcode;
			cdb[1] = flagvals;
			cdb[14] = groupnum;
			cdb[15] = control;

			/* Transfer length */
			cdb[13] = (u8)(num_blocks & 0xff);
			cdb[12] = (u8)((num_blocks >> 8) & 0xff);
			cdb[11] = (u8)((num_blocks >> 16) & 0xff);
			cdb[10] = (u8)((num_blocks >> 24) & 0xff);

1473
			io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
1474
			cdb_len = 16;
1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527
		}

		/* Normal case, just load LBA here */
		switch (cdb_len) {
		case 6:
		{
			u8 val = cdb[1] & 0xE0;
			cdb[3] = (u8)(start_blk & 0xff);
			cdb[2] = (u8)((start_blk >> 8) & 0xff);
			cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
			break;
		}
		case 10:
			cdb[5] = (u8)(start_blk & 0xff);
			cdb[4] = (u8)((start_blk >> 8) & 0xff);
			cdb[3] = (u8)((start_blk >> 16) & 0xff);
			cdb[2] = (u8)((start_blk >> 24) & 0xff);
			break;
		case 12:
			cdb[5]    = (u8)(start_blk & 0xff);
			cdb[4]    = (u8)((start_blk >> 8) & 0xff);
			cdb[3]    = (u8)((start_blk >> 16) & 0xff);
			cdb[2]    = (u8)((start_blk >> 24) & 0xff);
			break;
		case 16:
			cdb[9]    = (u8)(start_blk & 0xff);
			cdb[8]    = (u8)((start_blk >> 8) & 0xff);
			cdb[7]    = (u8)((start_blk >> 16) & 0xff);
			cdb[6]    = (u8)((start_blk >> 24) & 0xff);
			cdb[5]    = (u8)((start_blk >> 32) & 0xff);
			cdb[4]    = (u8)((start_blk >> 40) & 0xff);
			cdb[3]    = (u8)((start_blk >> 48) & 0xff);
			cdb[2]    = (u8)((start_blk >> 56) & 0xff);
			break;
		}
	}
}

/**
 * megasas_build_ldio_fusion -	Prepares IOs to devices
 * @instance:		Adapter soft state
 * @scp:		SCSI command
 * @cmd:		Command to be prepared
 *
 * Prepares the io_request and chain elements (sg_frame) for IO
 * The IO can be for PD (Fast Path) or LD
 */
void
megasas_build_ldio_fusion(struct megasas_instance *instance,
			  struct scsi_cmnd *scp,
			  struct megasas_cmd_fusion *cmd)
{
	u8 fp_possible;
1528
	u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
1529 1530 1531 1532
	struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
	union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
	struct IO_REQUEST_INFO io_info;
	struct fusion_context *fusion;
1533
	struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1534
	u8 *raidLUN;
1535

1536
	device_id = MEGASAS_DEV_INDEX(scp);
1537 1538 1539 1540

	fusion = instance->ctrl_context;

	io_request = cmd->io_request;
1541
	io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id);
1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554
	io_request->RaidContext.status = 0;
	io_request->RaidContext.exStatus = 0;

	req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;

	start_lba_lo = 0;
	start_lba_hi = 0;
	fp_possible = 0;

	/*
	 * 6-byte READ(0x08) or WRITE(0x0A) cdb
	 */
	if (scp->cmd_len == 6) {
1555
		datalength = (u32) scp->cmnd[4];
1556 1557 1558 1559 1560 1561 1562 1563 1564 1565
		start_lba_lo = ((u32) scp->cmnd[1] << 16) |
			((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];

		start_lba_lo &= 0x1FFFFF;
	}

	/*
	 * 10-byte READ(0x28) or WRITE(0x2A) cdb
	 */
	else if (scp->cmd_len == 10) {
1566
		datalength = (u32) scp->cmnd[8] |
1567 1568 1569 1570 1571 1572 1573 1574 1575 1576
			((u32) scp->cmnd[7] << 8);
		start_lba_lo = ((u32) scp->cmnd[2] << 24) |
			((u32) scp->cmnd[3] << 16) |
			((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
	}

	/*
	 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
	 */
	else if (scp->cmd_len == 12) {
1577
		datalength = ((u32) scp->cmnd[6] << 24) |
1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588
			((u32) scp->cmnd[7] << 16) |
			((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
		start_lba_lo = ((u32) scp->cmnd[2] << 24) |
			((u32) scp->cmnd[3] << 16) |
			((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
	}

	/*
	 * 16-byte READ(0x88) or WRITE(0x8A) cdb
	 */
	else if (scp->cmd_len == 16) {
1589
		datalength = ((u32) scp->cmnd[10] << 24) |
1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602
			((u32) scp->cmnd[11] << 16) |
			((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
		start_lba_lo = ((u32) scp->cmnd[6] << 24) |
			((u32) scp->cmnd[7] << 16) |
			((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];

		start_lba_hi = ((u32) scp->cmnd[2] << 24) |
			((u32) scp->cmnd[3] << 16) |
			((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
	}

	memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
	io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
1603
	io_info.numBlocks = datalength;
1604
	io_info.ldTgtId = device_id;
1605
	io_request->DataLength = cpu_to_le32(scsi_bufflen(scp));
1606 1607 1608 1609

	if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
		io_info.isRead = 1;

1610
	local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1611 1612

	if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >=
1613
		instance->fw_supported_vd_count) || (!fusion->fast_path_io)) {
1614 1615 1616
		io_request->RaidContext.regLockFlags  = 0;
		fp_possible = 0;
	} else {
1617 1618
		if (MR_BuildRaidContext(instance, &io_info,
					&io_request->RaidContext,
1619
					local_map_ptr, &raidLUN))
1620 1621 1622
			fp_possible = io_info.fpOkForIo;
	}

1623
	/* Use raw_smp_processor_id() for now until cmd->request->cpu is CPU
1624 1625 1626
	   id by default, not CPU group id, otherwise all MSI-X queues won't
	   be utilized */
	cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ?
1627
		raw_smp_processor_id() % instance->msix_vectors : 0;
1628

1629 1630 1631 1632 1633 1634 1635
	if (fp_possible) {
		megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
				   local_map_ptr, start_lba_lo);
		io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
		cmd->request_desc->SCSIIO.RequestFlags =
			(MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY
			 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1636 1637
		if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
			(instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1638 1639 1640 1641 1642 1643 1644
			if (io_request->RaidContext.regLockFlags ==
			    REGION_TYPE_UNUSED)
				cmd->request_desc->SCSIIO.RequestFlags =
					(MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
					MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
			io_request->RaidContext.Type = MPI2_TYPE_CUDA;
			io_request->RaidContext.nseg = 0x1;
1645
			io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
1646 1647 1648 1649
			io_request->RaidContext.regLockFlags |=
			  (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
			   MR_RL_FLAGS_SEQ_NUM_ENABLE);
		}
1650 1651 1652
		if ((fusion->load_balance_info[device_id].loadBalanceFlag) &&
		    (io_info.isRead)) {
			io_info.devHandle =
1653
				get_updated_dev_handle(instance,
1654 1655 1656
					&fusion->load_balance_info[device_id],
					&io_info);
			scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
1657
			cmd->pd_r1_lb = io_info.pd_after_lb;
1658 1659
		} else
			scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
1660 1661 1662 1663 1664 1665 1666 1667

		if ((raidLUN[0] == 1) &&
			(local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 2)) {
			instance->dev_handle = !(instance->dev_handle);
			io_info.devHandle =
				local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
		}

1668 1669
		cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
		io_request->DevHandle = io_info.devHandle;
1670 1671
		/* populate the LUN field */
		memcpy(io_request->LUN, raidLUN, 8);
1672 1673
	} else {
		io_request->RaidContext.timeoutValue =
1674
			cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
1675 1676 1677
		cmd->request_desc->SCSIIO.RequestFlags =
			(MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
			 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1678 1679
		if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
			(instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691
			if (io_request->RaidContext.regLockFlags ==
			    REGION_TYPE_UNUSED)
				cmd->request_desc->SCSIIO.RequestFlags =
					(MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
					MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
			io_request->RaidContext.Type = MPI2_TYPE_CUDA;
			io_request->RaidContext.regLockFlags |=
				(MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
				 MR_RL_FLAGS_SEQ_NUM_ENABLE);
			io_request->RaidContext.nseg = 0x1;
		}
		io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1692
		io_request->DevHandle = cpu_to_le16(device_id);
1693 1694 1695 1696
	} /* Not FP */
}

/**
1697
 * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
1698 1699 1700 1701
 * @instance:		Adapter soft state
 * @scp:		SCSI command
 * @cmd:		Command to be prepared
 *
1702
 * Prepares the io_request frame for non-rw io cmds for vd.
1703
 */
1704 1705
static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
			  struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
1706 1707 1708 1709
{
	u32 device_id;
	struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
	u16 pd_index = 0;
1710
	struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1711
	struct fusion_context *fusion = instance->ctrl_context;
1712
	u8                          span, physArm;
1713
	__le16                      devHandle;
1714 1715 1716
	u32                         ld, arRef, pd;
	struct MR_LD_RAID                  *raid;
	struct RAID_CONTEXT                *pRAID_Context;
1717
	u8 fp_possible = 1;
1718 1719

	io_request = cmd->io_request;
1720 1721
	device_id = MEGASAS_DEV_INDEX(scmd);
	pd_index = MEGASAS_PD_INDEX(scmd);
1722
	local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1723
	io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
1724 1725 1726 1727 1728 1729
	/* get RAID_Context pointer */
	pRAID_Context = &io_request->RaidContext;
	/* Check with FW team */
	pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
	pRAID_Context->regLockRowLBA    = 0;
	pRAID_Context->regLockLength    = 0;
1730

1731 1732
	if (fusion->fast_path_io && (
		device_id < instance->fw_supported_vd_count)) {
1733

1734
		ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1735
		if (ld >= instance->fw_supported_vd_count)
1736
			fp_possible = 0;
1737 1738 1739

		raid = MR_LdRaidGet(ld, local_map_ptr);
		if (!(raid->capability.fpNonRWCapable))
1740 1741 1742
			fp_possible = 0;
	} else
		fp_possible = 0;
1743

1744 1745 1746 1747 1748 1749 1750 1751 1752 1753
	if (!fp_possible) {
		io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
		io_request->DevHandle = cpu_to_le16(device_id);
		io_request->LUN[1] = scmd->device->lun;
		pRAID_Context->timeoutValue =
			cpu_to_le16 (scmd->request->timeout / HZ);
		cmd->request_desc->SCSIIO.RequestFlags =
			(MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
			MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
	} else {
1754 1755

		/* set RAID context values */
1756 1757 1758
		pRAID_Context->configSeqNum = raid->seqNum;
		pRAID_Context->regLockFlags = REGION_TYPE_SHARED_READ;
		pRAID_Context->timeoutValue = cpu_to_le16(raid->fpIoTimeoutForLd);
1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769

		/* get the DevHandle for the PD (since this is
		   fpNonRWCapable, this is a single disk RAID0) */
		span = physArm = 0;
		arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
		pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
		devHandle = MR_PdDevHandleGet(pd, local_map_ptr);

		/* build request descriptor */
		cmd->request_desc->SCSIIO.RequestFlags =
			(MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
1770
			MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1771 1772 1773 1774 1775 1776 1777 1778
		cmd->request_desc->SCSIIO.DevHandle = devHandle;

		/* populate the LUN field */
		memcpy(io_request->LUN, raid->LUN, 8);

		/* build the raidScsiIO structure */
		io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
		io_request->DevHandle = devHandle;
1779 1780
	}
}
1781

1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801
/**
 * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
 * @instance:		Adapter soft state
 * @scp:		SCSI command
 * @cmd:		Command to be prepared
 * @fp_possible:	parameter to detect fast path or firmware path io.
 *
 * Prepares the io_request frame for rw/non-rw io cmds for syspds
 */
static void
megasas_build_syspd_fusion(struct megasas_instance *instance,
	struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd, u8 fp_possible)
{
	u32 device_id;
	struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
	u16 pd_index = 0;
	u16 os_timeout_value;
	u16 timeout_limit;
	struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
	struct RAID_CONTEXT	*pRAID_Context;
1802
	struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1803
	struct fusion_context *fusion = instance->ctrl_context;
1804
	pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
1805 1806 1807 1808

	device_id = MEGASAS_DEV_INDEX(scmd);
	pd_index = MEGASAS_PD_INDEX(scmd);
	os_timeout_value = scmd->request->timeout / HZ;
1809

1810 1811 1812
	io_request = cmd->io_request;
	/* get RAID_Context pointer */
	pRAID_Context = &io_request->RaidContext;
1813 1814 1815
	pRAID_Context->regLockFlags = 0;
	pRAID_Context->regLockRowLBA = 0;
	pRAID_Context->regLockLength = 0;
1816 1817 1818 1819 1820
	io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
	io_request->LUN[1] = scmd->device->lun;
	pRAID_Context->RAIDFlags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
		<< MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;

1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844
	/* If FW supports PD sequence number */
	if (instance->use_seqnum_jbod_fp &&
		instance->pd_list[pd_index].driveType == TYPE_DISK) {
		/* TgtId must be incremented by 255 as jbod seq number is index
		 * below raid map
		 */
		pRAID_Context->VirtualDiskTgtId =
			cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1));
		pRAID_Context->configSeqNum = pd_sync->seq[pd_index].seqNum;
		io_request->DevHandle = pd_sync->seq[pd_index].devHandle;
		pRAID_Context->regLockFlags |=
			(MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
	} else if (fusion->fast_path_io) {
		pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
		pRAID_Context->configSeqNum = 0;
		local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
		io_request->DevHandle =
			local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
	} else {
		/* Want to send all IO via FW path */
		pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
		pRAID_Context->configSeqNum = 0;
		io_request->DevHandle = le16_to_cpu(0xFFFF);
	}
1845 1846 1847 1848 1849 1850 1851 1852 1853

	cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
	cmd->request_desc->SCSIIO.MSIxIndex =
		instance->msix_vectors ?
		(raw_smp_processor_id() % instance->msix_vectors) : 0;


	if (!fp_possible) {
		/* system pd firmware path */
1854 1855 1856
		io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
		cmd->request_desc->SCSIIO.RequestFlags =
			(MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1857 1858
				MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
		pRAID_Context->timeoutValue = cpu_to_le16(os_timeout_value);
1859
		pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877
	} else {
		/* system pd Fast Path */
		io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
		timeout_limit = (scmd->device->type == TYPE_DISK) ?
				255 : 0xFFFF;
		pRAID_Context->timeoutValue =
			cpu_to_le16((os_timeout_value > timeout_limit) ?
			timeout_limit : os_timeout_value);
		if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
			(instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
			pRAID_Context->Type = MPI2_TYPE_CUDA;
			pRAID_Context->nseg = 0x1;
			io_request->IoFlags |=
				cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
		}
		cmd->request_desc->SCSIIO.RequestFlags =
			(MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
				MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894
	}
}

/**
 * megasas_build_io_fusion -	Prepares IOs to devices
 * @instance:		Adapter soft state
 * @scp:		SCSI command
 * @cmd:		Command to be prepared
 *
 * Invokes helper functions to prepare request frames
 * and sets flags appropriate for IO/Non-IO cmd
 */
int
megasas_build_io_fusion(struct megasas_instance *instance,
			struct scsi_cmnd *scp,
			struct megasas_cmd_fusion *cmd)
{
1895 1896
	u32 sge_count;
	u8  cmd_type;
1897 1898 1899
	struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;

	/* Zero out some fields so they don't get reused */
H
Hannes Reinecke 已提交
1900
	memset(io_request->LUN, 0x0, 8);
1901 1902 1903 1904 1905
	io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
	io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
	io_request->EEDPFlags = 0;
	io_request->Control = 0;
	io_request->EEDPBlockSize = 0;
1906
	io_request->ChainOffset = 0;
1907
	io_request->RaidContext.RAIDFlags = 0;
1908 1909
	io_request->RaidContext.Type = 0;
	io_request->RaidContext.nseg = 0;
1910 1911 1912 1913 1914 1915

	memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
	/*
	 * Just the CDB length,rest of the Flags are zero
	 * This will be modified for FP in build_ldio_fusion
	 */
1916
	io_request->IoFlags = cpu_to_le16(scp->cmd_len);
1917

1918 1919
	switch (cmd_type = megasas_cmd_type(scp)) {
	case READ_WRITE_LDIO:
1920
		megasas_build_ldio_fusion(instance, scp, cmd);
1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935
		break;
	case NON_READ_WRITE_LDIO:
		megasas_build_ld_nonrw_fusion(instance, scp, cmd);
		break;
	case READ_WRITE_SYSPDIO:
	case NON_READ_WRITE_SYSPDIO:
		if (instance->secure_jbod_support &&
			(cmd_type == NON_READ_WRITE_SYSPDIO))
			megasas_build_syspd_fusion(instance, scp, cmd, 0);
		else
			megasas_build_syspd_fusion(instance, scp, cmd, 1);
		break;
	default:
		break;
	}
1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946

	/*
	 * Construct SGL
	 */

	sge_count =
		megasas_make_sgl_fusion(instance, scp,
					(struct MPI25_IEEE_SGE_CHAIN64 *)
					&io_request->SGL, cmd);

	if (sge_count > instance->max_num_sge) {
1947
		dev_err(&instance->pdev->dev, "Error. sge_count (0x%x) exceeds "
1948 1949 1950 1951 1952 1953 1954
		       "max (0x%x) allowed\n", sge_count,
		       instance->max_num_sge);
		return 1;
	}

	io_request->RaidContext.numSGE = sge_count;

1955
	io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
1956 1957

	if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1958
		io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
1959
	else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1960
		io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
1961 1962 1963 1964

	io_request->SGLOffset0 =
		offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;

1965
	io_request->SenseBufferLowAddress = cpu_to_le32(cmd->sense_phys_addr);
1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980
	io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;

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

	return 0;
}

union MEGASAS_REQUEST_DESCRIPTOR_UNION *
megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
{
	u8 *p;
	struct fusion_context *fusion;

	if (index >= instance->max_fw_cmds) {
1981
		dev_err(&instance->pdev->dev, "Invalid SMID (0x%x)request for "
1982 1983
		       "descriptor for scsi%d\n", index,
			instance->host->host_no);
1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
		return NULL;
	}
	fusion = instance->ctrl_context;
	p = fusion->req_frames_desc
		+sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index;

	return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
}

/**
 * megasas_build_and_issue_cmd_fusion -Main routine for building and
 *                                     issuing non IOCTL cmd
 * @instance:			Adapter soft state
 * @scmd:			pointer to scsi cmd from OS
 */
static u32
megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
				   struct scsi_cmnd *scmd)
{
	struct megasas_cmd_fusion *cmd;
	union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
	u32 index;
	struct fusion_context *fusion;

	fusion = instance->ctrl_context;

2010
	cmd = megasas_get_cmd_fusion(instance, scmd->request->tag);
2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022

	index = cmd->index;

	req_desc = megasas_get_request_descriptor(instance, index-1);
	if (!req_desc)
		return 1;

	req_desc->Words = 0;
	cmd->request_desc = req_desc;

	if (megasas_build_io_fusion(instance, scmd, cmd)) {
		megasas_return_cmd_fusion(instance, cmd);
2023
		dev_err(&instance->pdev->dev, "Error building command\n");
2024 2025 2026 2027 2028
		cmd->request_desc = NULL;
		return 1;
	}

	req_desc = cmd->request_desc;
2029
	req_desc->SCSIIO.SMID = cpu_to_le16(index);
2030 2031 2032

	if (cmd->io_request->ChainOffset != 0 &&
	    cmd->io_request->ChainOffset != 0xF)
2033
		dev_err(&instance->pdev->dev, "The chain offset value is not "
2034 2035 2036 2037 2038 2039 2040
		       "correct : %x\n", cmd->io_request->ChainOffset);

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

2041
	megasas_fire_cmd_fusion(instance, req_desc);
2042 2043 2044 2045 2046 2047 2048 2049 2050 2051

	return 0;
}

/**
 * complete_cmd_fusion -	Completes command
 * @instance:			Adapter soft state
 * Completes all commands that is in reply descriptor queue
 */
int
2052
complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
2053 2054 2055 2056 2057 2058 2059 2060
{
	union MPI2_REPLY_DESCRIPTORS_UNION *desc;
	struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
	struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
	struct fusion_context *fusion;
	struct megasas_cmd *cmd_mfi;
	struct megasas_cmd_fusion *cmd_fusion;
	u16 smid, num_completed;
2061
	u8 reply_descript_type;
2062 2063 2064
	u32 status, extStatus, device_id;
	union desc_value d_val;
	struct LD_LOAD_BALANCE_INFO *lbinfo;
2065
	int threshold_reply_count = 0;
2066
	struct scsi_cmnd *scmd_local = NULL;
2067 2068 2069 2070 2071 2072 2073

	fusion = instance->ctrl_context;

	if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
		return IRQ_HANDLED;

	desc = fusion->reply_frames_desc;
2074 2075 2076
	desc += ((MSIxIndex * fusion->reply_alloc_sz)/
		 sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)) +
		fusion->last_reply_idx[MSIxIndex];
2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089

	reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;

	d_val.word = desc->Words;

	reply_descript_type = reply_desc->ReplyFlags &
		MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;

	if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
		return IRQ_NONE;

	num_completed = 0;

2090 2091
	while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
	       d_val.u.high != cpu_to_le32(UINT_MAX)) {
2092
		smid = le16_to_cpu(reply_desc->SMID);
2093 2094 2095 2096 2097 2098 2099 2100 2101 2102

		cmd_fusion = fusion->cmd_list[smid - 1];

		scsi_io_req =
			(struct MPI2_RAID_SCSI_IO_REQUEST *)
		  cmd_fusion->io_request;

		if (cmd_fusion->scmd)
			cmd_fusion->scmd->SCp.ptr = NULL;

2103
		scmd_local = cmd_fusion->scmd;
2104 2105 2106 2107 2108 2109
		status = scsi_io_req->RaidContext.status;
		extStatus = scsi_io_req->RaidContext.exStatus;

		switch (scsi_io_req->Function) {
		case MPI2_FUNCTION_SCSI_IO_REQUEST:  /*Fast Path IO.*/
			/* Update load balancing info */
2110
			device_id = MEGASAS_DEV_INDEX(scmd_local);
2111 2112 2113
			lbinfo = &fusion->load_balance_info[device_id];
			if (cmd_fusion->scmd->SCp.Status &
			    MEGASAS_LOAD_BALANCE_FLAG) {
2114
				atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
2115 2116 2117 2118 2119 2120
				cmd_fusion->scmd->SCp.Status &=
					~MEGASAS_LOAD_BALANCE_FLAG;
			}
			if (reply_descript_type ==
			    MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) {
				if (megasas_dbg_lvl == 5)
2121
					dev_err(&instance->pdev->dev, "\nFAST Path "
2122 2123 2124 2125 2126 2127 2128 2129 2130
					       "IO Success\n");
			}
			/* Fall thru and complete IO */
		case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
			/* Map the FW Cmd Status */
			map_cmd_status(cmd_fusion, status, extStatus);
			scsi_io_req->RaidContext.status = 0;
			scsi_io_req->RaidContext.exStatus = 0;
			megasas_return_cmd_fusion(instance, cmd_fusion);
2131 2132
			scsi_dma_unmap(scmd_local);
			scmd_local->scsi_done(scmd_local);
2133 2134 2135 2136 2137
			atomic_dec(&instance->fw_outstanding);

			break;
		case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
			cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2138

2139 2140 2141 2142 2143 2144 2145 2146
			/* Poll mode. Dummy free.
			 * In case of Interrupt mode, caller has reverse check.
			 */
			if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
				cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
				megasas_return_cmd(instance, cmd_mfi);
			} else
				megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2147 2148 2149
			break;
		}

2150 2151 2152 2153
		fusion->last_reply_idx[MSIxIndex]++;
		if (fusion->last_reply_idx[MSIxIndex] >=
		    fusion->reply_q_depth)
			fusion->last_reply_idx[MSIxIndex] = 0;
2154

2155
		desc->Words = cpu_to_le64(ULLONG_MAX);
2156
		num_completed++;
2157
		threshold_reply_count++;
2158 2159

		/* Get the next reply descriptor */
2160 2161 2162 2163
		if (!fusion->last_reply_idx[MSIxIndex])
			desc = fusion->reply_frames_desc +
				((MSIxIndex * fusion->reply_alloc_sz)/
				 sizeof(union MPI2_REPLY_DESCRIPTORS_UNION));
2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176
		else
			desc++;

		reply_desc =
		  (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;

		d_val.word = desc->Words;

		reply_descript_type = reply_desc->ReplyFlags &
			MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;

		if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
			break;
2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195
		/*
		 * Write to reply post host index register after completing threshold
		 * number of reply counts and still there are more replies in reply queue
		 * pending to be completed
		 */
		if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) {
			if ((instance->pdev->device ==
				PCI_DEVICE_ID_LSI_INVADER) ||
				(instance->pdev->device ==
				PCI_DEVICE_ID_LSI_FURY))
				writel(((MSIxIndex & 0x7) << 24) |
					fusion->last_reply_idx[MSIxIndex],
					instance->reply_post_host_index_addr[MSIxIndex/8]);
			else
				writel((MSIxIndex << 24) |
					fusion->last_reply_idx[MSIxIndex],
					instance->reply_post_host_index_addr[0]);
			threshold_reply_count = 0;
		}
2196 2197 2198 2199 2200 2201
	}

	if (!num_completed)
		return IRQ_NONE;

	wmb();
2202 2203 2204 2205 2206 2207 2208 2209 2210
	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
		(instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
		writel(((MSIxIndex & 0x7) << 24) |
			fusion->last_reply_idx[MSIxIndex],
			instance->reply_post_host_index_addr[MSIxIndex/8]);
	else
		writel((MSIxIndex << 24) |
			fusion->last_reply_idx[MSIxIndex],
			instance->reply_post_host_index_addr[0]);
2211
	megasas_check_and_restore_queue_depth(instance);
2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226
	return IRQ_HANDLED;
}

/**
 * megasas_complete_cmd_dpc_fusion -	Completes command
 * @instance:			Adapter soft state
 *
 * Tasklet to complete cmds
 */
void
megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
{
	struct megasas_instance *instance =
		(struct megasas_instance *)instance_addr;
	unsigned long flags;
2227 2228 2229
	u32 count, MSIxIndex;

	count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
2230 2231 2232 2233 2234 2235 2236 2237 2238

	/* If we have already declared adapter dead, donot complete cmds */
	spin_lock_irqsave(&instance->hba_lock, flags);
	if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
		spin_unlock_irqrestore(&instance->hba_lock, flags);
		return;
	}
	spin_unlock_irqrestore(&instance->hba_lock, flags);

2239 2240
	for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
		complete_cmd_fusion(instance, MSIxIndex);
2241 2242 2243 2244 2245 2246 2247
}

/**
 * megasas_isr_fusion - isr entry point
 */
irqreturn_t megasas_isr_fusion(int irq, void *devp)
{
2248 2249
	struct megasas_irq_context *irq_context = devp;
	struct megasas_instance *instance = irq_context->instance;
2250
	u32 mfiStatus, fw_state, dma_state;
2251

2252 2253 2254
	if (instance->mask_interrupts)
		return IRQ_NONE;

2255
	if (!instance->msix_vectors) {
2256 2257 2258 2259 2260 2261
		mfiStatus = instance->instancet->clear_intr(instance->reg_set);
		if (!mfiStatus)
			return IRQ_NONE;
	}

	/* If we are resetting, bail */
2262 2263
	if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
		instance->instancet->clear_intr(instance->reg_set);
2264
		return IRQ_HANDLED;
2265
	}
2266

2267
	if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) {
2268
		instance->instancet->clear_intr(instance->reg_set);
2269 2270 2271
		/* If we didn't complete any commands, check for FW fault */
		fw_state = instance->instancet->read_fw_status_reg(
			instance->reg_set) & MFI_STATE_MASK;
2272 2273 2274 2275 2276 2277 2278 2279 2280 2281
		dma_state = instance->instancet->read_fw_status_reg
			(instance->reg_set) & MFI_STATE_DMADONE;
		if (instance->crash_dump_drv_support &&
			instance->crash_dump_app_support) {
			/* Start collecting crash, if DMA bit is done */
			if ((fw_state == MFI_STATE_FAULT) && dma_state)
				schedule_work(&instance->crash_init);
			else if (fw_state == MFI_STATE_FAULT)
				schedule_work(&instance->work_init);
		} else if (fw_state == MFI_STATE_FAULT) {
2282
			dev_warn(&instance->pdev->dev, "Iop2SysDoorbellInt"
2283
			       "for scsi%d\n", instance->host->host_no);
2284
			schedule_work(&instance->work_init);
2285
		}
2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306
	}

	return IRQ_HANDLED;
}

/**
 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
 * @instance:			Adapter soft state
 * mfi_cmd:			megasas_cmd pointer
 *
 */
u8
build_mpt_mfi_pass_thru(struct megasas_instance *instance,
			struct megasas_cmd *mfi_cmd)
{
	struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
	struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
	struct megasas_cmd_fusion *cmd;
	struct fusion_context *fusion;
	struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;

2307 2308 2309 2310
	fusion = instance->ctrl_context;

	cmd = megasas_get_cmd_fusion(instance,
			instance->max_scsi_cmds + mfi_cmd->index);
2311 2312 2313

	/*  Save the smid. To be used for returning the cmd */
	mfi_cmd->context.smid = cmd->index;
2314

2315 2316 2317 2318 2319 2320
	/*
	 * For cmds where the flag is set, store the flag and check
	 * on completion. For cmds with this flag, don't call
	 * megasas_complete_cmd
	 */

2321
	if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
2322
		mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
2323 2324

	io_req = cmd->io_request;
2325

2326 2327
	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
		(instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
2328 2329 2330 2331 2332 2333
		struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
			(struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
		sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
		sgl_ptr_end->Flags = 0;
	}

2334 2335 2336 2337 2338 2339 2340 2341
	mpi25_ieee_chain =
	  (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;

	io_req->Function    = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
	io_req->SGLOffset0  = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
				       SGL) / 4;
	io_req->ChainOffset = fusion->chain_offset_mfi_pthru;

2342
	mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
2343 2344 2345 2346

	mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
		MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;

2347
	mpi25_ieee_chain->Length = cpu_to_le32(MEGASAS_MAX_SZ_CHAIN_FRAME);
2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364

	return 0;
}

/**
 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
 * @instance:			Adapter soft state
 * @cmd:			mfi cmd to build
 *
 */
union MEGASAS_REQUEST_DESCRIPTOR_UNION *
build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
{
	union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
	u16 index;

	if (build_mpt_mfi_pass_thru(instance, cmd)) {
2365
		dev_err(&instance->pdev->dev, "Couldn't build MFI pass thru cmd\n");
2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379
		return NULL;
	}

	index = cmd->context.smid;

	req_desc = megasas_get_request_descriptor(instance, index - 1);

	if (!req_desc)
		return NULL;

	req_desc->Words = 0;
	req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
					 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);

2380
	req_desc->SCSIIO.SMID = cpu_to_le16(index);
2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398

	return req_desc;
}

/**
 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
 * @instance:			Adapter soft state
 * @cmd:			mfi cmd pointer
 *
 */
void
megasas_issue_dcmd_fusion(struct megasas_instance *instance,
			  struct megasas_cmd *cmd)
{
	union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;

	req_desc = build_mpt_cmd(instance, cmd);
	if (!req_desc) {
2399
		dev_err(&instance->pdev->dev, "Couldn't issue MFI pass thru cmd\n");
2400 2401
		return;
	}
2402
	megasas_fire_cmd_fusion(instance, req_desc);
2403 2404 2405 2406
}

/**
 * megasas_release_fusion -	Reverses the FW initialization
G
Geert Uytterhoeven 已提交
2407
 * @instance:			Adapter soft state
2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429
 */
void
megasas_release_fusion(struct megasas_instance *instance)
{
	megasas_free_cmds(instance);
	megasas_free_cmds_fusion(instance);

	iounmap(instance->reg_set);

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

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

2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448
/**
 * megasas_alloc_host_crash_buffer -	Host buffers for Crash dump collection from Firmware
 * @instance:				Controller's soft instance
 * return:			        Number of allocated host crash buffers
 */
static void
megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
{
	unsigned int i;

	instance->crash_buf_pages = get_order(CRASH_DMA_BUF_SIZE);
	for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
		instance->crash_buf[i] = (void	*)__get_free_pages(GFP_KERNEL,
				instance->crash_buf_pages);
		if (!instance->crash_buf[i]) {
			dev_info(&instance->pdev->dev, "Firmware crash dump "
				"memory allocation failed at index %d\n", i);
			break;
		}
2449 2450
		memset(instance->crash_buf[i], 0,
			((1 << PAGE_SHIFT) << instance->crash_buf_pages));
2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474
	}
	instance->drv_buf_alloc = i;
}

/**
 * megasas_free_host_crash_buffer -	Host buffers for Crash dump collection from Firmware
 * @instance:				Controller's soft instance
 */
void
megasas_free_host_crash_buffer(struct megasas_instance *instance)
{
	unsigned int i
;
	for (i = 0; i < instance->drv_buf_alloc; i++) {
		if (instance->crash_buf[i])
			free_pages((ulong)instance->crash_buf[i],
					instance->crash_buf_pages);
	}
	instance->drv_buf_index = 0;
	instance->drv_buf_alloc = 0;
	instance->fw_crash_state = UNAVAILABLE;
	instance->fw_crash_buffer_size = 0;
}

2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497
/**
 * megasas_adp_reset_fusion -	For controller reset
 * @regs:				MFI register set
 */
static int
megasas_adp_reset_fusion(struct megasas_instance *instance,
			 struct megasas_register_set __iomem *regs)
{
	return 0;
}

/**
 * megasas_check_reset_fusion -	For controller reset check
 * @regs:				MFI register set
 */
static int
megasas_check_reset_fusion(struct megasas_instance *instance,
			   struct megasas_register_set __iomem *regs)
{
	return 0;
}

/* This function waits for outstanding commands on fusion to complete */
2498 2499
int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
					int iotimeout, int *convert)
2500
{
2501
	int i, outstanding, retval = 0, hb_seconds_missed = 0;
2502
	u32 fw_state;
2503

2504
	for (i = 0; i < resetwaittime; i++) {
2505 2506 2507 2508
		/* Check if firmware is in fault state */
		fw_state = instance->instancet->read_fw_status_reg(
			instance->reg_set) & MFI_STATE_MASK;
		if (fw_state == MFI_STATE_FAULT) {
2509
			dev_warn(&instance->pdev->dev, "Found FW in FAULT state,"
2510 2511 2512 2513 2514 2515 2516
			       " will reset adapter scsi%d.\n",
				instance->host->host_no);
			retval = 1;
			goto out;
		}
		/* If SR-IOV VF mode & heartbeat timeout, don't wait */
		if (instance->requestorId && !iotimeout) {
2517 2518 2519 2520
			retval = 1;
			goto out;
		}

2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531
		/* If SR-IOV VF mode & I/O timeout, check for HB timeout */
		if (instance->requestorId && iotimeout) {
			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;
				hb_seconds_missed = 0;
			} else {
				hb_seconds_missed++;
				if (hb_seconds_missed ==
				    (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
2532
					dev_warn(&instance->pdev->dev, "SR-IOV:"
2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544
					       " Heartbeat never completed "
					       " while polling during I/O "
					       " timeout handling for "
					       "scsi%d.\n",
					       instance->host->host_no);
					       *convert = 1;
					       retval = 1;
					       goto out;
				}
			}
		}

2545 2546 2547 2548 2549
		outstanding = atomic_read(&instance->fw_outstanding);
		if (!outstanding)
			goto out;

		if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2550
			dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2551 2552
			       "commands to complete for scsi%d\n", i,
			       outstanding, instance->host->host_no);
2553 2554 2555 2556 2557 2558 2559
			megasas_complete_cmd_dpc_fusion(
				(unsigned long)instance);
		}
		msleep(1000);
	}

	if (atomic_read(&instance->fw_outstanding)) {
2560
		dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
2561 2562
		       "will reset adapter scsi%d.\n",
		       instance->host->host_no);
2563 2564 2565 2566 2567 2568 2569 2570
		retval = 1;
	}
out:
	return retval;
}

void  megasas_reset_reply_desc(struct megasas_instance *instance)
{
2571
	int i, count;
2572 2573 2574 2575
	struct fusion_context *fusion;
	union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;

	fusion = instance->ctrl_context;
2576 2577 2578
	count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
	for (i = 0 ; i < count ; i++)
		fusion->last_reply_idx[i] = 0;
2579
	reply_desc = fusion->reply_frames_desc;
2580
	for (i = 0 ; i < fusion->reply_q_depth * count; i++, reply_desc++)
2581
		reply_desc->Words = cpu_to_le64(ULLONG_MAX);
2582 2583
}

2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610
/*
 * megasas_refire_mgmt_cmd :	Re-fire management commands
 * @instance:				Controller's soft instance
*/
void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
{
	int j;
	struct megasas_cmd_fusion *cmd_fusion;
	struct fusion_context *fusion;
	struct megasas_cmd *cmd_mfi;
	union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
	u16 smid;

	fusion = instance->ctrl_context;

	/* Re-fire management commands.
	 * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
	 */
	for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
		cmd_fusion = fusion->cmd_list[j];
		cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
		smid = le16_to_cpu(cmd_mfi->context.smid);

		if (!smid)
			continue;
		req_desc = megasas_get_request_descriptor
					(instance, smid - 1);
2611 2612 2613 2614
		if (req_desc && ((cmd_mfi->frame->dcmd.opcode !=
				cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO)) &&
				 (cmd_mfi->frame->dcmd.opcode !=
				cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO))))
2615 2616
			megasas_fire_cmd_fusion(instance, req_desc);
		else
2617 2618
			megasas_return_cmd(instance, cmd_mfi);
	}
2619 2620
}

2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644
/* Check for a second path that is currently UP */
int megasas_check_mpio_paths(struct megasas_instance *instance,
	struct scsi_cmnd *scmd)
{
	int i, j, retval = (DID_RESET << 16);

	if (instance->mpio && instance->requestorId) {
		for (i = 0 ; i < MAX_MGMT_ADAPTERS ; i++)
			for (j = 0 ; j < MAX_LOGICAL_DRIVES; j++)
				if (megasas_mgmt_info.instance[i] &&
				    (megasas_mgmt_info.instance[i] != instance) &&
				    megasas_mgmt_info.instance[i]->mpio &&
				    megasas_mgmt_info.instance[i]->requestorId
				    &&
				    (megasas_mgmt_info.instance[i]->ld_ids[j]
				     == scmd->device->id)) {
					    retval = (DID_NO_CONNECT << 16);
					    goto out;
				}
	}
out:
	return retval;
}

2645
/* Core fusion reset function */
2646
int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout)
2647
{
2648
	int retval = SUCCESS, i, retry = 0, convert = 0;
2649 2650 2651
	struct megasas_instance *instance;
	struct megasas_cmd_fusion *cmd_fusion;
	struct fusion_context *fusion;
2652
	u32 host_diag, abs_state, status_reg, reset_adapter;
2653
	u32 io_timeout_in_crash_mode = 0;
2654
	struct scsi_cmnd *scmd_local = NULL;
2655 2656 2657 2658

	instance = (struct megasas_instance *)shost->hostdata;
	fusion = instance->ctrl_context;

2659 2660
	mutex_lock(&instance->reset_mutex);

2661
	if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2662
		dev_warn(&instance->pdev->dev, "Hardware critical error, "
2663 2664
		       "returning FAILED for scsi%d.\n",
			instance->host->host_no);
2665
		mutex_unlock(&instance->reset_mutex);
2666
		return FAILED;
2667
	}
2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703
	status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
	abs_state = status_reg & MFI_STATE_MASK;

	/* IO timeout detected, forcibly put FW in FAULT state */
	if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
		instance->crash_dump_app_support && iotimeout) {
		dev_info(&instance->pdev->dev, "IO timeout is detected, "
			"forcibly FAULT Firmware\n");
		instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
		status_reg = readl(&instance->reg_set->doorbell);
		writel(status_reg | MFI_STATE_FORCE_OCR,
			&instance->reg_set->doorbell);
		readl(&instance->reg_set->doorbell);
		mutex_unlock(&instance->reset_mutex);
		do {
			ssleep(3);
			io_timeout_in_crash_mode++;
			dev_dbg(&instance->pdev->dev, "waiting for [%d] "
				"seconds for crash dump collection and OCR "
				"to be done\n", (io_timeout_in_crash_mode * 3));
		} while ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
			(io_timeout_in_crash_mode < 80));

		if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
			dev_info(&instance->pdev->dev, "OCR done for IO "
				"timeout case\n");
			retval = SUCCESS;
		} else {
			dev_info(&instance->pdev->dev, "Controller is not "
				"operational after 240 seconds wait for IO "
				"timeout case in FW crash dump mode\n do "
				"OCR/kill adapter\n");
			retval = megasas_reset_fusion(shost, 0);
		}
		return retval;
	}
2704

2705 2706
	if (instance->requestorId && !instance->skip_heartbeat_timer_del)
		del_timer_sync(&instance->sriov_heartbeat_timer);
2707
	set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2708
	instance->adprecovery = MEGASAS_ADPRESET_SM_POLLING;
2709
	instance->instancet->disable_intr(instance);
2710 2711
	msleep(1000);

2712
	/* First try waiting for commands to complete */
2713 2714 2715
	if (megasas_wait_for_outstanding_fusion(instance, iotimeout,
						&convert)) {
		instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2716
		dev_warn(&instance->pdev->dev, "resetting fusion "
2717 2718 2719 2720
		       "adapter scsi%d.\n", instance->host->host_no);
		if (convert)
			iotimeout = 0;

2721
		/* Now return commands back to the OS */
2722
		for (i = 0 ; i < instance->max_scsi_cmds; i++) {
2723
			cmd_fusion = fusion->cmd_list[i];
2724
			scmd_local = cmd_fusion->scmd;
2725
			if (cmd_fusion->scmd) {
2726
				scmd_local->result =
2727
					megasas_check_mpio_paths(instance,
2728
							scmd_local);
2729
				megasas_return_cmd_fusion(instance, cmd_fusion);
2730 2731
				scsi_dma_unmap(scmd_local);
				scmd_local->scsi_done(scmd_local);
2732 2733 2734 2735
				atomic_dec(&instance->fw_outstanding);
			}
		}

2736 2737 2738 2739 2740 2741
		status_reg = instance->instancet->read_fw_status_reg(
			instance->reg_set);
		abs_state = status_reg & MFI_STATE_MASK;
		reset_adapter = status_reg & MFI_RESET_ADAPTER;
		if (instance->disableOnlineCtrlReset ||
		    (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
2742
			/* Reset not supported, kill adapter */
2743
			dev_warn(&instance->pdev->dev, "Reset not supported"
2744 2745
			       ", killing adapter scsi%d.\n",
				instance->host->host_no);
2746
			megaraid_sas_kill_hba(instance);
2747
			instance->skip_heartbeat_timer_del = 1;
2748 2749 2750 2751
			retval = FAILED;
			goto out;
		}

2752 2753 2754 2755 2756 2757 2758 2759 2760
		/* Let SR-IOV VF & PF sync up if there was a HB failure */
		if (instance->requestorId && !iotimeout) {
			msleep(MEGASAS_OCR_SETTLE_TIME_VF);
			/* Look for a late HB update after VF settle time */
			if (abs_state == MFI_STATE_OPERATIONAL &&
			    (instance->hb_host_mem->HB.fwCounter !=
			     instance->hb_host_mem->HB.driverCounter)) {
					instance->hb_host_mem->HB.driverCounter =
						instance->hb_host_mem->HB.fwCounter;
2761
					dev_warn(&instance->pdev->dev, "SR-IOV:"
2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776
					       "Late FW heartbeat update for "
					       "scsi%d.\n",
					       instance->host->host_no);
			} else {
				/* In VF mode, first poll for FW ready */
				for (i = 0;
				     i < (MEGASAS_RESET_WAIT_TIME * 1000);
				     i += 20) {
					status_reg =
						instance->instancet->
						read_fw_status_reg(
							instance->reg_set);
					abs_state = status_reg &
						MFI_STATE_MASK;
					if (abs_state == MFI_STATE_READY) {
2777 2778
						dev_warn(&instance->pdev->dev,
						       "SR-IOV: FW was found"
2779 2780 2781 2782 2783 2784 2785 2786
						       "to be in ready state "
						       "for scsi%d.\n",
						       instance->host->host_no);
						break;
					}
					msleep(20);
				}
				if (abs_state != MFI_STATE_READY) {
2787
					dev_warn(&instance->pdev->dev, "SR-IOV: "
2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803
					       "FW not in ready state after %d"
					       " seconds for scsi%d, status_reg = "
					       "0x%x.\n",
					       MEGASAS_RESET_WAIT_TIME,
					       instance->host->host_no,
					       status_reg);
					megaraid_sas_kill_hba(instance);
					instance->skip_heartbeat_timer_del = 1;
					instance->adprecovery =
						MEGASAS_HW_CRITICAL_ERROR;
					retval = FAILED;
					goto out;
				}
			}
		}

2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822
		/* Now try to reset the chip */
		for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
			writel(MPI2_WRSEQ_FLUSH_KEY_VALUE,
			       &instance->reg_set->fusion_seq_offset);
			writel(MPI2_WRSEQ_1ST_KEY_VALUE,
			       &instance->reg_set->fusion_seq_offset);
			writel(MPI2_WRSEQ_2ND_KEY_VALUE,
			       &instance->reg_set->fusion_seq_offset);
			writel(MPI2_WRSEQ_3RD_KEY_VALUE,
			       &instance->reg_set->fusion_seq_offset);
			writel(MPI2_WRSEQ_4TH_KEY_VALUE,
			       &instance->reg_set->fusion_seq_offset);
			writel(MPI2_WRSEQ_5TH_KEY_VALUE,
			       &instance->reg_set->fusion_seq_offset);
			writel(MPI2_WRSEQ_6TH_KEY_VALUE,
			       &instance->reg_set->fusion_seq_offset);

			/* Check that the diag write enable (DRWE) bit is on */
			host_diag = readl(&instance->reg_set->fusion_host_diag);
2823
			retry = 0;
2824 2825 2826 2827 2828
			while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
				msleep(100);
				host_diag =
				readl(&instance->reg_set->fusion_host_diag);
				if (retry++ == 100) {
2829
					dev_warn(&instance->pdev->dev,
2830 2831 2832
					       "Host diag unlock failed! "
					       "for scsi%d\n",
						instance->host->host_no);
2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851
					break;
				}
			}
			if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
				continue;

			/* Send chip reset command */
			writel(host_diag | HOST_DIAG_RESET_ADAPTER,
			       &instance->reg_set->fusion_host_diag);
			msleep(3000);

			/* Make sure reset adapter bit is cleared */
			host_diag = readl(&instance->reg_set->fusion_host_diag);
			retry = 0;
			while (host_diag & HOST_DIAG_RESET_ADAPTER) {
				msleep(100);
				host_diag =
				readl(&instance->reg_set->fusion_host_diag);
				if (retry++ == 1000) {
2852
					dev_warn(&instance->pdev->dev,
2853
					       "Diag reset adapter never "
2854 2855
					       "cleared for scsi%d!\n",
						instance->host->host_no);
2856 2857 2858 2859 2860 2861 2862 2863
					break;
				}
			}
			if (host_diag & HOST_DIAG_RESET_ADAPTER)
				continue;

			abs_state =
				instance->instancet->read_fw_status_reg(
2864
					instance->reg_set) & MFI_STATE_MASK;
2865 2866 2867 2868 2869 2870 2871
			retry = 0;

			while ((abs_state <= MFI_STATE_FW_INIT) &&
			       (retry++ < 1000)) {
				msleep(100);
				abs_state =
				instance->instancet->read_fw_status_reg(
2872
					instance->reg_set) & MFI_STATE_MASK;
2873 2874
			}
			if (abs_state <= MFI_STATE_FW_INIT) {
2875
				dev_warn(&instance->pdev->dev, "firmware "
2876
				       "state < MFI_STATE_FW_INIT, state = "
2877 2878
				       "0x%x for scsi%d\n", abs_state,
					instance->host->host_no);
2879 2880 2881 2882
				continue;
			}

			/* Wait for FW to become ready */
2883
			if (megasas_transition_to_ready(instance, 1)) {
2884
				dev_warn(&instance->pdev->dev, "Failed to "
2885 2886 2887
				       "transition controller to ready "
				       "for scsi%d.\n",
				       instance->host->host_no);
2888 2889 2890 2891 2892
				continue;
			}

			megasas_reset_reply_desc(instance);
			if (megasas_ioc_init_fusion(instance)) {
2893
				dev_warn(&instance->pdev->dev,
2894 2895 2896
				       "megasas_ioc_init_fusion() failed!"
				       " for scsi%d\n",
				       instance->host->host_no);
2897 2898 2899
				continue;
			}

2900
			megasas_refire_mgmt_cmd(instance);
2901

2902 2903 2904 2905 2906 2907 2908
			if (megasas_get_ctrl_info(instance)) {
				dev_info(&instance->pdev->dev,
					"Failed from %s %d\n",
					__func__, __LINE__);
				megaraid_sas_kill_hba(instance);
				retval = FAILED;
			}
2909 2910 2911
			/* Reset load balance info */
			memset(fusion->load_balance_info, 0,
			       sizeof(struct LD_LOAD_BALANCE_INFO)
2912
			       *MAX_LOGICAL_DRIVES_EXT);
2913 2914 2915 2916

			if (!megasas_get_map_info(instance))
				megasas_sync_map_info(instance);

2917 2918
			megasas_setup_jbod_map(instance);

2919 2920 2921 2922 2923
			clear_bit(MEGASAS_FUSION_IN_RESET,
				  &instance->reset_flags);
			instance->instancet->enable_intr(instance);
			instance->adprecovery = MEGASAS_HBA_OPERATIONAL;

2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934
			/* Restart SR-IOV heartbeat */
			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);
				else
					instance->skip_heartbeat_timer_del = 1;
			}

2935
			/* Adapter reset completed successfully */
2936
			dev_warn(&instance->pdev->dev, "Reset "
2937 2938
			       "successful for scsi%d.\n",
				instance->host->host_no);
2939

2940 2941 2942 2943 2944 2945 2946 2947
			if (instance->crash_dump_drv_support &&
				instance->crash_dump_app_support)
				megasas_set_crash_dump_params(instance,
					MR_CRASH_BUF_TURN_ON);
			else
				megasas_set_crash_dump_params(instance,
					MR_CRASH_BUF_TURN_OFF);

2948 2949 2950 2951
			retval = SUCCESS;
			goto out;
		}
		/* Reset failed, kill the adapter */
2952
		dev_warn(&instance->pdev->dev, "Reset failed, killing "
2953
		       "adapter scsi%d.\n", instance->host->host_no);
2954
		megaraid_sas_kill_hba(instance);
2955
		instance->skip_heartbeat_timer_del = 1;
2956 2957
		retval = FAILED;
	} else {
2958 2959 2960 2961 2962 2963 2964
		/* For VF: Restart HB timer if we didn't OCR */
		if (instance->requestorId) {
			megasas_start_timer(instance,
					    &instance->sriov_heartbeat_timer,
					    megasas_sriov_heartbeat_handler,
					    MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
		}
2965
		clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2966
		instance->instancet->enable_intr(instance);
2967 2968 2969 2970 2971 2972 2973 2974
		instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
	}
out:
	clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
	mutex_unlock(&instance->reset_mutex);
	return retval;
}

2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042
/* Fusion Crash dump collection work queue */
void  megasas_fusion_crash_dump_wq(struct work_struct *work)
{
	struct megasas_instance *instance =
		container_of(work, struct megasas_instance, crash_init);
	u32 status_reg;
	u8 partial_copy = 0;


	status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);

	/*
	 * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
	 * to host crash buffers
	 */
	if (instance->drv_buf_index == 0) {
		/* Buffer is already allocated for old Crash dump.
		 * Do OCR and do not wait for crash dump collection
		 */
		if (instance->drv_buf_alloc) {
			dev_info(&instance->pdev->dev, "earlier crash dump is "
				"not yet copied by application, ignoring this "
				"crash dump and initiating OCR\n");
			status_reg |= MFI_STATE_CRASH_DUMP_DONE;
			writel(status_reg,
				&instance->reg_set->outbound_scratch_pad);
			readl(&instance->reg_set->outbound_scratch_pad);
			return;
		}
		megasas_alloc_host_crash_buffer(instance);
		dev_info(&instance->pdev->dev, "Number of host crash buffers "
			"allocated: %d\n", instance->drv_buf_alloc);
	}

	/*
	 * Driver has allocated max buffers, which can be allocated
	 * and FW has more crash dump data, then driver will
	 * ignore the data.
	 */
	if (instance->drv_buf_index >= (instance->drv_buf_alloc)) {
		dev_info(&instance->pdev->dev, "Driver is done copying "
			"the buffer: %d\n", instance->drv_buf_alloc);
		status_reg |= MFI_STATE_CRASH_DUMP_DONE;
		partial_copy = 1;
	} else {
		memcpy(instance->crash_buf[instance->drv_buf_index],
			instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
		instance->drv_buf_index++;
		status_reg &= ~MFI_STATE_DMADONE;
	}

	if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
		dev_info(&instance->pdev->dev, "Crash Dump is available,number "
			"of copied buffers: %d\n", instance->drv_buf_index);
		instance->fw_crash_buffer_size =  instance->drv_buf_index;
		instance->fw_crash_state = AVAILABLE;
		instance->drv_buf_index = 0;
		writel(status_reg, &instance->reg_set->outbound_scratch_pad);
		readl(&instance->reg_set->outbound_scratch_pad);
		if (!partial_copy)
			megasas_reset_fusion(instance->host, 0);
	} else {
		writel(status_reg, &instance->reg_set->outbound_scratch_pad);
		readl(&instance->reg_set->outbound_scratch_pad);
	}
}


3043 3044 3045 3046 3047 3048
/* Fusion OCR work queue */
void megasas_fusion_ocr_wq(struct work_struct *work)
{
	struct megasas_instance *instance =
		container_of(work, struct megasas_instance, work_init);

3049
	megasas_reset_fusion(instance->host, 0);
3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064
}

struct megasas_instance_template megasas_instance_template_fusion = {
	.enable_intr = megasas_enable_intr_fusion,
	.disable_intr = megasas_disable_intr_fusion,
	.clear_intr = megasas_clear_intr_fusion,
	.read_fw_status_reg = megasas_read_fw_status_reg_fusion,
	.adp_reset = megasas_adp_reset_fusion,
	.check_reset = megasas_check_reset_fusion,
	.service_isr = megasas_isr_fusion,
	.tasklet = megasas_complete_cmd_dpc_fusion,
	.init_adapter = megasas_init_adapter_fusion,
	.build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
	.issue_dcmd = megasas_issue_dcmd_fusion,
};