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linux_dsm_epyc7002/drivers/scsi/megaraid/megaraid_sas_fusion.c
Sumit Saxena 9fb74c4e66 megaraid_sas: Fix sparse warning 
Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-09 11:07:16 -05:00

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/*
* Linux MegaRAID driver for SAS based RAID controllers
*
* Copyright (c) 2009-2013 LSI Corporation
* Copyright (c) 2013-2014 Avago Technologies
*
* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* FILE: megaraid_sas_fusion.c
*
* Authors: Avago Technologies
* Sumant Patro
* Adam Radford
* Kashyap Desai <kashyap.desai@avagotech.com>
* Sumit Saxena <sumit.saxena@avagotech.com>
*
* Send feedback to: megaraidlinux.pdl@avagotech.com
*
* Mail to: Avago Technologies, 350 West Trimble Road, Building 90,
* San Jose, California 95131
*/
#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>
#include <scsi/scsi_dbg.h>
#include <linux/dmi.h>
#include "megaraid_sas_fusion.h"
#include "megaraid_sas.h"
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
wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
int seconds);
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);
void
megasas_check_and_restore_queue_depth(struct megasas_instance *instance);
int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
void megaraid_sas_kill_hba(struct megasas_instance *instance);
extern u32 megasas_dbg_lvl;
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;
extern int resetwaittime;
/**
* megasas_enable_intr_fusion - Enables interrupts
* @regs: MFI register set
*/
void
megasas_enable_intr_fusion(struct megasas_instance *instance)
{
struct megasas_register_set __iomem *regs;
regs = instance->reg_set;
instance->mask_interrupts = 0;
/* For Thunderbolt/Invader also clear intr on enable */
writel(~0, &regs->outbound_intr_status);
readl(&regs->outbound_intr_status);
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
megasas_disable_intr_fusion(struct megasas_instance *instance)
{
u32 mask = 0xFFFFFFFF;
u32 status;
struct megasas_register_set __iomem *regs;
regs = instance->reg_set;
instance->mask_interrupts = 1;
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
*
* Returns a blk_tag indexed mpt frame
*/
inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
*instance, u32 blk_tag)
{
struct fusion_context *fusion;
fusion = instance->ctrl_context;
return fusion->cmd_list[blk_tag];
}
/**
* 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
*/
inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
struct megasas_cmd_fusion *cmd)
{
cmd->scmd = NULL;
memset(cmd->io_request, 0, sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
}
/**
* megasas_fire_cmd_fusion - Sends command to the FW
*/
static void
megasas_fire_cmd_fusion(struct megasas_instance *instance,
union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
{
#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
unsigned long flags;
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
}
/**
* 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) {
dev_err(&instance->pdev->dev, "dma pool is null. SG Pool %p, "
"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;
fusion = instance->ctrl_context;
max_cmd = instance->max_fw_cmds;
/*
* Use DMA pool facility provided by PCI layer
*/
fusion->sg_dma_pool = pci_pool_create("sg_pool_fusion", instance->pdev,
instance->max_chain_frame_sz,
4, 0);
if (!fusion->sg_dma_pool) {
dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup request pool fusion\n");
return -ENOMEM;
}
fusion->sense_dma_pool = pci_pool_create("sense pool fusion",
instance->pdev,
SCSI_SENSE_BUFFERSIZE, 64, 0);
if (!fusion->sense_dma_pool) {
dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool fusion\n");
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) {
dev_printk(KERN_DEBUG, &instance->pdev->dev, "pci_pool_alloc failed\n");
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)
{
int i, j, count;
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) {
dev_err(&instance->pdev->dev, "Could not allocate memory for "
"request_frames\n");
goto fail_req_desc;
}
count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
fusion->reply_frames_desc_pool =
pci_pool_create("reply_frames pool", instance->pdev,
fusion->reply_alloc_sz * count, 16, 0);
if (!fusion->reply_frames_desc_pool) {
dev_err(&instance->pdev->dev, "Could not allocate memory for "
"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) {
dev_err(&instance->pdev->dev, "Could not allocate memory for "
"reply_frame pool\n");
pci_pool_destroy(fusion->reply_frames_desc_pool);
goto fail_reply_desc;
}
reply_desc = fusion->reply_frames_desc;
for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
reply_desc->Words = cpu_to_le64(ULLONG_MAX);
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) {
dev_err(&instance->pdev->dev, "Could not allocate memory for "
"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) {
dev_err(&instance->pdev->dev, "Could not allocate memory for "
"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.
*/
fusion->cmd_list = kzalloc(sizeof(struct megasas_cmd_fusion *)
* max_cmd, GFP_KERNEL);
if (!fusion->cmd_list) {
dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory. Could not alloc "
"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]) {
dev_err(&instance->pdev->dev, "Could not alloc cmd list fusion\n");
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;
cmd->sync_cmd_idx = (i >= instance->max_scsi_cmds) ?
(i - instance->max_scsi_cmds) :
(u32)ULONG_MAX; /* Set to Invalid */
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)) {
dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
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
wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
int seconds)
{
int i;
struct megasas_header *frame_hdr = &cmd->frame->hdr;
struct fusion_context *fusion;
u32 msecs = seconds * 1000;
fusion = instance->ctrl_context;
/*
* Wait for cmd_status to change
*/
for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
rmb();
msleep(20);
}
if (frame_hdr->cmd_status == 0xff)
return -ETIME;
return (frame_hdr->cmd_status == MFI_STAT_OK) ?
0 : 1;
}
/**
* 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;
union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
int i;
struct megasas_header *frame_hdr;
const char *sys_info;
MFI_CAPABILITIES *drv_ops;
fusion = instance->ctrl_context;
cmd = megasas_get_cmd(instance);
if (!cmd) {
dev_err(&instance->pdev->dev, "Could not allocate cmd for INIT Frame\n");
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) {
dev_err(&instance->pdev->dev, "Could not allocate memory for "
"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;
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);
IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
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;
frame_hdr->flags = cpu_to_le16(
le16_to_cpu(frame_hdr->flags) |
MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
init_frame->cmd = MFI_CMD_INIT;
init_frame->cmd_status = 0xFF;
drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);
/* driver support Extended MSIX */
if (fusion->adapter_type == INVADER_SERIES)
drv_ops->mfi_capabilities.support_additional_msix = 1;
/* driver supports HA / Remote LUN over Fast Path interface */
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;
if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN)
drv_ops->mfi_capabilities.support_ext_io_size = 1;
/* Convert capability to LE32 */
cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
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;
}
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));
init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
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));
req_desc.MFAIo.RequestFlags =
(MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
/*
* disable the intr before firing the init frame
*/
instance->instancet->disable_intr(instance);
for (i = 0; i < (10 * 1000); i += 20) {
if (readl(&instance->reg_set->doorbell) & 1)
msleep(20);
else
break;
}
megasas_fire_cmd_fusion(instance, &req_desc);
wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS);
frame_hdr = &cmd->frame->hdr;
if (frame_hdr->cmd_status != 0) {
ret = 1;
goto fail_fw_init;
}
dev_err(&instance->pdev->dev, "Init cmd success\n");
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;
}
/**
* 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;
}
/*
* 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.
* 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
*/
static int
megasas_get_ld_map_info(struct megasas_instance *instance)
{
int ret = 0;
struct megasas_cmd *cmd;
struct megasas_dcmd_frame *dcmd;
void *ci;
dma_addr_t ci_h = 0;
u32 size_map_info;
struct fusion_context *fusion;
cmd = megasas_get_cmd(instance);
if (!cmd) {
dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n");
return -ENOMEM;
}
fusion = instance->ctrl_context;
if (!fusion) {
megasas_return_cmd(instance, cmd);
return -ENXIO;
}
dcmd = &cmd->frame->dcmd;
size_map_info = fusion->current_map_sz;
ci = (void *) fusion->ld_map[(instance->map_id & 1)];
ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
if (!ci) {
dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n");
megasas_return_cmd(instance, cmd);
return -ENOMEM;
}
memset(ci, 0, fusion->max_map_sz);
memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
#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
dcmd->cmd = MFI_CMD_DCMD;
dcmd->cmd_status = 0xFF;
dcmd->sge_count = 1;
dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
dcmd->timeout = 0;
dcmd->pad_0 = 0;
dcmd->data_xfer_len = cpu_to_le32(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);
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);
megasas_return_cmd(instance, cmd);
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)) {
if (MR_ValidateMapInfo(instance)) {
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;
struct MR_DRV_RAID_MAP_ALL *map;
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) {
dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n");
return -ENOMEM;
}
fusion = instance->ctrl_context;
if (!fusion) {
megasas_return_cmd(instance, cmd);
return 1;
}
map = fusion->ld_drv_map[instance->map_id & 1];
num_lds = le16_to_cpu(map->raidMap.ldCount);
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];
memset(ci, 0, fusion->max_map_sz);
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;
}
size_map_info = fusion->current_map_sz;
dcmd->cmd = MFI_CMD_DCMD;
dcmd->cmd_status = 0xFF;
dcmd->sge_count = 1;
dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE);
dcmd->timeout = 0;
dcmd->pad_0 = 0;
dcmd->data_xfer_len = cpu_to_le32(size_map_info);
dcmd->mbox.b[0] = num_lds;
dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
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);
instance->map_update_cmd = cmd;
instance->instancet->issue_dcmd(instance, cmd);
return ret;
}
/*
* 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;
case PCI_DEVICE_ID_LSI_CUTLASS_52:
case PCI_DEVICE_ID_LSI_CUTLASS_53:
switch (instance->pdev->subsystem_device) {
case MEGARAID_INTEL_RMS3BC160_SSDID:
dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
instance->host->host_no,
MEGARAID_INTEL_RMS3BC160_BRANDING);
break;
default:
break;
}
break;
default:
break;
}
}
/**
* 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, scratch_pad_2;
int i = 0, count;
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;
/*
* 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;
max_cmd = instance->max_fw_cmds;
fusion->reply_q_depth = 2 * (((max_cmd + 1 + 15)/16)*16);
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 */
scratch_pad_2 = readl(&instance->reg_set->outbound_scratch_pad_2);
/* If scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
* Firmware support extended IO chain frame which is 4 times more than
* legacy Firmware.
* Legacy Firmware - Frame size is (8 * 128) = 1K
* 1M IO Firmware - Frame size is (8 * 128 * 4) = 4K
*/
if (scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK)
instance->max_chain_frame_sz =
((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO;
else
instance->max_chain_frame_sz =
((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO;
if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) {
dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n",
instance->max_chain_frame_sz,
MEGASAS_CHAIN_FRAME_SZ_MIN);
instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN;
}
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 =
instance->max_chain_frame_sz
/ sizeof(union MPI2_SGE_IO_UNION);
instance->max_num_sge =
rounddown_pow_of_two(fusion->max_sge_in_main_msg
+ fusion->max_sge_in_chain - 2);
/* 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;
count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
for (i = 0 ; i < count; i++)
fusion->last_reply_idx[i] = 0;
/*
* 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);
/*
* 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;
megasas_display_intel_branding(instance);
if (megasas_get_ctrl_info(instance)) {
dev_err(&instance->pdev->dev,
"Could not get controller info. Fail from %s %d\n",
__func__, __LINE__);
goto fail_ioc_init;
}
instance->flag_ieee = 1;
fusion->fast_path_io = 0;
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;
}
memset(fusion->ld_drv_map[i], 0,
((1 << PAGE_SHIFT) << fusion->drv_map_pages));
}
for (i = 0; i < 2; i++) {
fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
fusion->max_map_sz,
&fusion->ld_map_phys[i],
GFP_KERNEL);
if (!fusion->ld_map[i]) {
dev_err(&instance->pdev->dev, "Could not allocate memory "
"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)
dma_free_coherent(&instance->pdev->dev, fusion->max_map_sz,
fusion->ld_map[0], fusion->ld_map_phys[0]);
fail_ioc_init:
megasas_free_cmds_fusion(instance);
fail_alloc_cmds:
megasas_free_cmds(instance);
fail_alloc_mfi_cmds:
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;
case MFI_STAT_CONFIG_SEQ_MISMATCH:
cmd->scmd->result = DID_IMM_RETRY << 16;
break;
default:
dev_printk(KERN_DEBUG, &cmd->instance->pdev->dev, "FW status %#x\n", status);
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)
{
int i, sg_processed, sge_count;
struct scatterlist *os_sgl;
struct fusion_context *fusion;
fusion = instance->ctrl_context;
if (fusion->adapter_type == INVADER_SERIES) {
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;
}
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) {
sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
sgl_ptr->Flags = 0;
if (fusion->adapter_type == INVADER_SERIES)
if (i == sge_count - 1)
sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
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;
if (fusion->adapter_type == INVADER_SERIES) {
if ((le16_to_cpu(cmd->io_request->IoFlags) &
MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
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;
sg_chain = sgl_ptr;
/* Prepare chain element */
sg_chain->NextChainOffset = 0;
if (fusion->adapter_type == INVADER_SERIES)
sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
else
sg_chain->Flags =
(IEEE_SGE_FLAGS_CHAIN_ELEMENT |
MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
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);
sgl_ptr =
(struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
memset(sgl_ptr, 0, instance->max_chain_frame_sz);
}
}
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,
struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
{
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;
u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
/* 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);
io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
/* 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) {
io_request->EEDPFlags = cpu_to_le16(
MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
} else {
io_request->EEDPFlags = cpu_to_le16(
MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
}
io_request->Control |= cpu_to_le32((0x4 << 26));
io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
} 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);
io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
cdb_len = 10;
} 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);
io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
cdb_len = 16;
}
/* 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;
u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
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;
struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
u8 *raidLUN;
device_id = MEGASAS_DEV_INDEX(scp);
fusion = instance->ctrl_context;
io_request = cmd->io_request;
io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id);
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) {
datalength = (u32) scp->cmnd[4];
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) {
datalength = (u32) scp->cmnd[8] |
((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) {
datalength = ((u32) scp->cmnd[6] << 24) |
((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) {
datalength = ((u32) scp->cmnd[10] << 24) |
((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;
io_info.numBlocks = datalength;
io_info.ldTgtId = device_id;
io_request->DataLength = cpu_to_le32(scsi_bufflen(scp));
if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
io_info.isRead = 1;
local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >=
instance->fw_supported_vd_count) || (!fusion->fast_path_io)) {
io_request->RaidContext.regLockFlags = 0;
fp_possible = 0;
} else {
if (MR_BuildRaidContext(instance, &io_info,
&io_request->RaidContext,
local_map_ptr, &raidLUN))
fp_possible = io_info.fpOkForIo;
}
/* Use raw_smp_processor_id() for now until cmd->request->cpu is CPU
id by default, not CPU group id, otherwise all MSI-X queues won't
be utilized */
cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ?
raw_smp_processor_id() % instance->msix_vectors : 0;
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);
if (fusion->adapter_type == INVADER_SERIES) {
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;
io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
io_request->RaidContext.regLockFlags |=
(MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
MR_RL_FLAGS_SEQ_NUM_ENABLE);
}
if ((fusion->load_balance_info[device_id].loadBalanceFlag) &&
(io_info.isRead)) {
io_info.devHandle =
get_updated_dev_handle(instance,
&fusion->load_balance_info[device_id],
&io_info);
scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
cmd->pd_r1_lb = io_info.pd_after_lb;
} else
scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
if ((raidLUN[0] == 1) &&
(local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) {
instance->dev_handle = !(instance->dev_handle);
io_info.devHandle =
local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
}
cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
io_request->DevHandle = io_info.devHandle;
/* populate the LUN field */
memcpy(io_request->LUN, raidLUN, 8);
} else {
io_request->RaidContext.timeoutValue =
cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
cmd->request_desc->SCSIIO.RequestFlags =
(MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
<< MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
if (fusion->adapter_type == INVADER_SERIES) {
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;
io_request->DevHandle = cpu_to_le16(device_id);
} /* Not FP */
}
/**
* megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
* @instance: Adapter soft state
* @scp: SCSI command
* @cmd: Command to be prepared
*
* Prepares the io_request frame for non-rw io cmds for vd.
*/
static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
{
u32 device_id;
struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
u16 pd_index = 0;
struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
struct fusion_context *fusion = instance->ctrl_context;
u8 span, physArm;
__le16 devHandle;
u32 ld, arRef, pd;
struct MR_LD_RAID *raid;
struct RAID_CONTEXT *pRAID_Context;
u8 fp_possible = 1;
io_request = cmd->io_request;
device_id = MEGASAS_DEV_INDEX(scmd);
pd_index = MEGASAS_PD_INDEX(scmd);
local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
/* 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;
if (fusion->fast_path_io && (
device_id < instance->fw_supported_vd_count)) {
ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
if (ld >= instance->fw_supported_vd_count)
fp_possible = 0;
raid = MR_LdRaidGet(ld, local_map_ptr);
if (!(raid->capability.fpNonRWCapable))
fp_possible = 0;
} else
fp_possible = 0;
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 {
/* set RAID context values */
pRAID_Context->configSeqNum = raid->seqNum;
pRAID_Context->regLockFlags = REGION_TYPE_SHARED_READ;
pRAID_Context->timeoutValue = cpu_to_le16(raid->fpIoTimeoutForLd);
/* 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 <<
MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
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;
}
}
/**
* 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;
struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
struct fusion_context *fusion = instance->ctrl_context;
pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
device_id = MEGASAS_DEV_INDEX(scmd);
pd_index = MEGASAS_PD_INDEX(scmd);
os_timeout_value = scmd->request->timeout / HZ;
io_request = cmd->io_request;
/* get RAID_Context pointer */
pRAID_Context = &io_request->RaidContext;
pRAID_Context->regLockFlags = 0;
pRAID_Context->regLockRowLBA = 0;
pRAID_Context->regLockLength = 0;
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;
/* 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 = cpu_to_le16(0xFFFF);
}
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 */
io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
cmd->request_desc->SCSIIO.RequestFlags =
(MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
pRAID_Context->timeoutValue = cpu_to_le16(os_timeout_value);
pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
} 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 (fusion->adapter_type == INVADER_SERIES) {
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);
}
}
/**
* 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)
{
u16 sge_count;
u8 cmd_type;
struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
/* Zero out some fields so they don't get reused */
memset(io_request->LUN, 0x0, 8);
io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
io_request->EEDPFlags = 0;
io_request->Control = 0;
io_request->EEDPBlockSize = 0;
io_request->ChainOffset = 0;
io_request->RaidContext.RAIDFlags = 0;
io_request->RaidContext.Type = 0;
io_request->RaidContext.nseg = 0;
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
*/
io_request->IoFlags = cpu_to_le16(scp->cmd_len);
switch (cmd_type = megasas_cmd_type(scp)) {
case READ_WRITE_LDIO:
megasas_build_ldio_fusion(instance, scp, cmd);
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;
}
/*
* 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) {
dev_err(&instance->pdev->dev, "Error. sge_count (0x%x) exceeds "
"max (0x%x) allowed\n", sge_count,
instance->max_num_sge);
return 1;
}
/* numSGE store lower 8 bit of sge_count.
* numSGEExt store higher 8 bit of sge_count
*/
io_request->RaidContext.numSGE = sge_count;
io_request->RaidContext.numSGEExt = (u8)(sge_count >> 8);
io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
if (scp->sc_data_direction == PCI_DMA_TODEVICE)
io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
io_request->SGLOffset0 =
offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
io_request->SenseBufferLowAddress = cpu_to_le32(cmd->sense_phys_addr);
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) {
dev_err(&instance->pdev->dev, "Invalid SMID (0x%x)request for "
"descriptor for scsi%d\n", index,
instance->host->host_no);
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;
cmd = megasas_get_cmd_fusion(instance, scmd->request->tag);
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);
dev_err(&instance->pdev->dev, "Error building command\n");
cmd->request_desc = NULL;
return 1;
}
req_desc = cmd->request_desc;
req_desc->SCSIIO.SMID = cpu_to_le16(index);
if (cmd->io_request->ChainOffset != 0 &&
cmd->io_request->ChainOffset != 0xF)
dev_err(&instance->pdev->dev, "The chain offset value is not "
"correct : %x\n", cmd->io_request->ChainOffset);
/*
* Issue the command to the FW
*/
atomic_inc(&instance->fw_outstanding);
megasas_fire_cmd_fusion(instance, req_desc);
return 0;
}
/**
* complete_cmd_fusion - Completes command
* @instance: Adapter soft state
* Completes all commands that is in reply descriptor queue
*/
int
complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
{
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;
u8 reply_descript_type;
u32 status, extStatus, device_id;
union desc_value d_val;
struct LD_LOAD_BALANCE_INFO *lbinfo;
int threshold_reply_count = 0;
struct scsi_cmnd *scmd_local = NULL;
fusion = instance->ctrl_context;
if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
return IRQ_HANDLED;
desc = fusion->reply_frames_desc;
desc += ((MSIxIndex * fusion->reply_alloc_sz)/
sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)) +
fusion->last_reply_idx[MSIxIndex];
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;
while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
d_val.u.high != cpu_to_le32(UINT_MAX)) {
smid = le16_to_cpu(reply_desc->SMID);
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;
scmd_local = cmd_fusion->scmd;
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 */
device_id = MEGASAS_DEV_INDEX(scmd_local);
lbinfo = &fusion->load_balance_info[device_id];
if (cmd_fusion->scmd->SCp.Status &
MEGASAS_LOAD_BALANCE_FLAG) {
atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
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)
dev_err(&instance->pdev->dev, "\nFAST Path "
"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);
scsi_dma_unmap(scmd_local);
scmd_local->scsi_done(scmd_local);
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];
/* 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);
break;
}
fusion->last_reply_idx[MSIxIndex]++;
if (fusion->last_reply_idx[MSIxIndex] >=
fusion->reply_q_depth)
fusion->last_reply_idx[MSIxIndex] = 0;
desc->Words = cpu_to_le64(ULLONG_MAX);
num_completed++;
threshold_reply_count++;
/* Get the next reply descriptor */
if (!fusion->last_reply_idx[MSIxIndex])
desc = fusion->reply_frames_desc +
((MSIxIndex * fusion->reply_alloc_sz)/
sizeof(union MPI2_REPLY_DESCRIPTORS_UNION));
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;
/*
* 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 (fusion->adapter_type == INVADER_SERIES)
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;
}
}
if (!num_completed)
return IRQ_NONE;
wmb();
if (fusion->adapter_type == INVADER_SERIES)
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]);
megasas_check_and_restore_queue_depth(instance);
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;
u32 count, MSIxIndex;
count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
/* 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);
for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
complete_cmd_fusion(instance, MSIxIndex);
}
/**
* megasas_isr_fusion - isr entry point
*/
irqreturn_t megasas_isr_fusion(int irq, void *devp)
{
struct megasas_irq_context *irq_context = devp;
struct megasas_instance *instance = irq_context->instance;
u32 mfiStatus, fw_state, dma_state;
if (instance->mask_interrupts)
return IRQ_NONE;
if (!instance->msix_vectors) {
mfiStatus = instance->instancet->clear_intr(instance->reg_set);
if (!mfiStatus)
return IRQ_NONE;
}
/* If we are resetting, bail */
if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
instance->instancet->clear_intr(instance->reg_set);
return IRQ_HANDLED;
}
if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) {
instance->instancet->clear_intr(instance->reg_set);
/* 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;
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) {
dev_warn(&instance->pdev->dev, "Iop2SysDoorbellInt"
"for scsi%d\n", instance->host->host_no);
schedule_work(&instance->work_init);
}
}
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;
fusion = instance->ctrl_context;
cmd = megasas_get_cmd_fusion(instance,
instance->max_scsi_cmds + mfi_cmd->index);
/* Save the smid. To be used for returning the cmd */
mfi_cmd->context.smid = cmd->index;
/*
* 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
*/
if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
io_req = cmd->io_request;
if (fusion->adapter_type == INVADER_SERIES) {
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;
}
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;
mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
mpi25_ieee_chain->Length = cpu_to_le32(instance->max_chain_frame_sz);
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)) {
dev_err(&instance->pdev->dev, "Couldn't build MFI pass thru cmd\n");
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);
req_desc->SCSIIO.SMID = cpu_to_le16(index);
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) {
dev_err(&instance->pdev->dev, "Couldn't issue MFI pass thru cmd\n");
return;
}
megasas_fire_cmd_fusion(instance, req_desc);
}
/**
* megasas_release_fusion - Reverses the FW initialization
* @instance: Adapter soft state
*/
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);
}
/**
* 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;
}
memset(instance->crash_buf[i], 0,
((1 << PAGE_SHIFT) << instance->crash_buf_pages));
}
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;
}
/**
* 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)
{
u32 host_diag, abs_state, retry;
/* Now try to reset the chip */
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);
retry = 0;
while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
msleep(100);
host_diag = readl(&instance->reg_set->fusion_host_diag);
if (retry++ == 100) {
dev_warn(&instance->pdev->dev,
"Host diag unlock failed from %s %d\n",
__func__, __LINE__);
break;
}
}
if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
return -1;
/* 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) {
dev_warn(&instance->pdev->dev,
"Diag reset adapter never cleared %s %d\n",
__func__, __LINE__);
break;
}
}
if (host_diag & HOST_DIAG_RESET_ADAPTER)
return -1;
abs_state = instance->instancet->read_fw_status_reg(instance->reg_set)
& MFI_STATE_MASK;
retry = 0;
while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
msleep(100);
abs_state = instance->instancet->
read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
}
if (abs_state <= MFI_STATE_FW_INIT) {
dev_warn(&instance->pdev->dev,
"fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
abs_state, __func__, __LINE__);
return -1;
}
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 */
int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
int iotimeout, int *convert)
{
int i, outstanding, retval = 0, hb_seconds_missed = 0;
u32 fw_state;
for (i = 0; i < resetwaittime; i++) {
/* 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) {
dev_warn(&instance->pdev->dev, "Found FW in FAULT state,"
" 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) {
retval = 1;
goto out;
}
/* 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)) {
dev_warn(&instance->pdev->dev, "SR-IOV:"
" Heartbeat never completed "
" while polling during I/O "
" timeout handling for "
"scsi%d.\n",
instance->host->host_no);
*convert = 1;
retval = 1;
goto out;
}
}
}
outstanding = atomic_read(&instance->fw_outstanding);
if (!outstanding)
goto out;
if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
"commands to complete for scsi%d\n", i,
outstanding, instance->host->host_no);
megasas_complete_cmd_dpc_fusion(
(unsigned long)instance);
}
msleep(1000);
}
if (atomic_read(&instance->fw_outstanding)) {
dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
"will reset adapter scsi%d.\n",
instance->host->host_no);
retval = 1;
}
out:
return retval;
}
void megasas_reset_reply_desc(struct megasas_instance *instance)
{
int i, count;
struct fusion_context *fusion;
union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
fusion = instance->ctrl_context;
count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
for (i = 0 ; i < count ; i++)
fusion->last_reply_idx[i] = 0;
reply_desc = fusion->reply_frames_desc;
for (i = 0 ; i < fusion->reply_q_depth * count; i++, reply_desc++)
reply_desc->Words = cpu_to_le64(ULLONG_MAX);
}
/*
* 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);
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))))
megasas_fire_cmd_fusion(instance, req_desc);
else
megasas_return_cmd(instance, cmd_mfi);
}
}
/* 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;
}
/* Core fusion reset function */
int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout)
{
int retval = SUCCESS, i, convert = 0;
struct megasas_instance *instance;
struct megasas_cmd_fusion *cmd_fusion;
struct fusion_context *fusion;
u32 abs_state, status_reg, reset_adapter;
u32 io_timeout_in_crash_mode = 0;
struct scsi_cmnd *scmd_local = NULL;
instance = (struct megasas_instance *)shost->hostdata;
fusion = instance->ctrl_context;
mutex_lock(&instance->reset_mutex);
if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
dev_warn(&instance->pdev->dev, "Hardware critical error, "
"returning FAILED for scsi%d.\n",
instance->host->host_no);
mutex_unlock(&instance->reset_mutex);
return FAILED;
}
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;
}
if (instance->requestorId && !instance->skip_heartbeat_timer_del)
del_timer_sync(&instance->sriov_heartbeat_timer);
set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
instance->adprecovery = MEGASAS_ADPRESET_SM_POLLING;
instance->instancet->disable_intr(instance);
msleep(1000);
/* First try waiting for commands to complete */
if (megasas_wait_for_outstanding_fusion(instance, iotimeout,
&convert)) {
instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
dev_warn(&instance->pdev->dev, "resetting fusion "
"adapter scsi%d.\n", instance->host->host_no);
if (convert)
iotimeout = 0;
/* Now return commands back to the OS */
for (i = 0 ; i < instance->max_scsi_cmds; i++) {
cmd_fusion = fusion->cmd_list[i];
scmd_local = cmd_fusion->scmd;
if (cmd_fusion->scmd) {
scmd_local->result =
megasas_check_mpio_paths(instance,
scmd_local);
megasas_return_cmd_fusion(instance, cmd_fusion);
scsi_dma_unmap(scmd_local);
scmd_local->scsi_done(scmd_local);
atomic_dec(&instance->fw_outstanding);
}
}
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)) {
/* Reset not supported, kill adapter */
dev_warn(&instance->pdev->dev, "Reset not supported"
", killing adapter scsi%d.\n",
instance->host->host_no);
megaraid_sas_kill_hba(instance);
instance->skip_heartbeat_timer_del = 1;
retval = FAILED;
goto out;
}
/* 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;
dev_warn(&instance->pdev->dev, "SR-IOV:"
"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) {
dev_warn(&instance->pdev->dev,
"SR-IOV: FW was found"
"to be in ready state "
"for scsi%d.\n",
instance->host->host_no);
break;
}
msleep(20);
}
if (abs_state != MFI_STATE_READY) {
dev_warn(&instance->pdev->dev, "SR-IOV: "
"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;
}
}
}
/* Now try to reset the chip */
for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
if (instance->instancet->adp_reset
(instance, instance->reg_set))
continue;
/* Wait for FW to become ready */
if (megasas_transition_to_ready(instance, 1)) {
dev_warn(&instance->pdev->dev, "Failed to "
"transition controller to ready "
"for scsi%d.\n",
instance->host->host_no);
continue;
}
megasas_reset_reply_desc(instance);
if (megasas_ioc_init_fusion(instance)) {
dev_warn(&instance->pdev->dev,
"megasas_ioc_init_fusion() failed!"
" for scsi%d\n",
instance->host->host_no);
continue;
}
megasas_refire_mgmt_cmd(instance);
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;
}
/* Reset load balance info */
memset(fusion->load_balance_info, 0,
sizeof(struct LD_LOAD_BALANCE_INFO)
*MAX_LOGICAL_DRIVES_EXT);
if (!megasas_get_map_info(instance))
megasas_sync_map_info(instance);
megasas_setup_jbod_map(instance);
clear_bit(MEGASAS_FUSION_IN_RESET,
&instance->reset_flags);
instance->instancet->enable_intr(instance);
instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
/* 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;
}
/* Adapter reset completed successfully */
dev_warn(&instance->pdev->dev, "Reset "
"successful for scsi%d.\n",
instance->host->host_no);
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);
retval = SUCCESS;
goto out;
}
/* Reset failed, kill the adapter */
dev_warn(&instance->pdev->dev, "Reset failed, killing "
"adapter scsi%d.\n", instance->host->host_no);
megaraid_sas_kill_hba(instance);
instance->skip_heartbeat_timer_del = 1;
retval = FAILED;
} else {
/* 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);
}
clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
instance->instancet->enable_intr(instance);
instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
}
out:
clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
mutex_unlock(&instance->reset_mutex);
return retval;
}
/* 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);
}
}
/* 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);
megasas_reset_fusion(instance->host, 0);
}
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,
};
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