#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
+#include "megaraid_sas_fusion.h"
#include "megaraid_sas.h"
/*
MODULE_AUTHOR("megaraidlinux@lsi.com");
MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
-static int megasas_transition_to_ready(struct megasas_instance *instance);
+int megasas_transition_to_ready(struct megasas_instance *instance);
static int megasas_get_pd_list(struct megasas_instance *instance);
static int megasas_issue_init_mfi(struct megasas_instance *instance);
static int megasas_register_aen(struct megasas_instance *instance,
/* xscale IOP, vega */
{PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
/* xscale IOP */
+ {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
+ /* Fusion */
{}
};
static int megasas_poll_wait_aen;
static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
static u32 support_poll_for_event;
-static u32 megasas_dbg_lvl;
+u32 megasas_dbg_lvl;
static u32 support_device_change;
/* define lock for aen poll */
spinlock_t poll_aen_lock;
-static void
+void
megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
u8 alt_status);
+
static irqreturn_t megasas_isr(int irq, void *devp);
static u32
megasas_init_adapter_mfi(struct megasas_instance *instance);
megasas_build_and_issue_cmd(struct megasas_instance *instance,
struct scsi_cmnd *scmd);
static void megasas_complete_cmd_dpc(unsigned long instance_addr);
+void
+megasas_release_fusion(struct megasas_instance *instance);
+int
+megasas_ioc_init_fusion(struct megasas_instance *instance);
+void
+megasas_free_cmds_fusion(struct megasas_instance *instance);
+u8
+megasas_get_map_info(struct megasas_instance *instance);
+int
+megasas_sync_map_info(struct megasas_instance *instance);
+int
+wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
+void megasas_reset_reply_desc(struct megasas_instance *instance);
+u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
+ struct LD_LOAD_BALANCE_INFO *lbInfo);
+int megasas_reset_fusion(struct Scsi_Host *shost);
+void megasas_fusion_ocr_wq(struct work_struct *work);
void
megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
*
* Returns a free command from the pool
*/
-static struct megasas_cmd *megasas_get_cmd(struct megasas_instance
+struct megasas_cmd *megasas_get_cmd(struct megasas_instance
*instance)
{
unsigned long flags;
* @instance: Adapter soft state
* @cmd: Command packet to be returned to free command pool
*/
-static inline void
+inline void
megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
{
unsigned long flags;
spin_lock_irqsave(&instance->cmd_pool_lock, flags);
cmd->scmd = NULL;
+ cmd->frame_count = 0;
list_add_tail(&cmd->list, &instance->cmd_pool);
spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
* specific to gen2 (deviceid : 0x78, 0x79) controllers
*/
+/*
+ * Template added for TB (Fusion)
+ */
+extern struct megasas_instance_template megasas_instance_template_fusion;
+
/**
* megasas_issue_polled - Issues a polling command
* @instance: Adapter soft state
*
* For polling, MFI requires the cmd_status to be set to 0xFF before posting.
*/
-static int
+int
megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
{
- int i;
- u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000;
struct megasas_header *frame_hdr = &cmd->frame->hdr;
/*
* Issue the frame using inbound queue port
*/
- instance->instancet->fire_cmd(instance,
- cmd->frame_phys_addr, 0, instance->reg_set);
+ instance->instancet->issue_dcmd(instance, cmd);
/*
* Wait for cmd_status to change
*/
- for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i++) {
- rmb();
- msleep(1);
- }
-
- if (frame_hdr->cmd_status == 0xff)
- return -ETIME;
-
- return 0;
+ return wait_and_poll(instance, cmd);
}
/**
{
cmd->cmd_status = ENODATA;
- instance->instancet->fire_cmd(instance,
- cmd->frame_phys_addr, 0, instance->reg_set);
+ instance->instancet->issue_dcmd(instance, cmd);
wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA);
cmd->sync_cmd = 1;
cmd->cmd_status = 0xFF;
- instance->instancet->fire_cmd(instance,
- cmd->frame_phys_addr, 0, instance->reg_set);
+ instance->instancet->issue_dcmd(instance, cmd);
/*
* Wait for this cmd to complete
* Called by megasas_queue_command to find out if the command to be queued
* is a logical drive command
*/
-static inline int megasas_is_ldio(struct scsi_cmnd *cmd)
+inline int megasas_is_ldio(struct scsi_cmnd *cmd)
{
if (!MEGASAS_IS_LOGICAL(cmd))
return 0;
return 0;
}
-static void megaraid_sas_kill_hba(struct megasas_instance *instance)
+void megaraid_sas_kill_hba(struct megasas_instance *instance)
{
if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
- (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
- writel(MFI_STOP_ADP,
- &instance->reg_set->reserved_0[0]);
+ (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
+ (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION)) {
+ writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
} else {
- writel(MFI_STOP_ADP,
- &instance->reg_set->inbound_doorbell);
+ writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell);
+ }
+}
+
+ /**
+ * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
+ * restored to max value
+ * @instance: Adapter soft state
+ *
+ */
+void
+megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
+{
+ unsigned long flags;
+ if (instance->flag & MEGASAS_FW_BUSY
+ && time_after(jiffies, instance->last_time + 5 * HZ)
+ && atomic_read(&instance->fw_outstanding) < 17) {
+
+ spin_lock_irqsave(instance->host->host_lock, flags);
+ instance->flag &= ~MEGASAS_FW_BUSY;
+ if ((instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
+ (instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
+ instance->host->can_queue =
+ instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
+ } else
+ instance->host->can_queue =
+ instance->max_fw_cmds - MEGASAS_INT_CMDS;
+
+ spin_unlock_irqrestore(instance->host->host_lock, flags);
}
}
/*
* Check if we can restore can_queue
*/
- if (instance->flag & MEGASAS_FW_BUSY
- && time_after(jiffies, instance->last_time + 5 * HZ)
- && atomic_read(&instance->fw_outstanding) < 17) {
-
- spin_lock_irqsave(instance->host->host_lock, flags);
- instance->flag &= ~MEGASAS_FW_BUSY;
- if ((instance->pdev->device ==
- PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
- (instance->pdev->device ==
- PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
- instance->host->can_queue =
- instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
- } else
- instance->host->can_queue =
- instance->max_fw_cmds - MEGASAS_INT_CMDS;
-
- spin_unlock_irqrestore(instance->host->host_lock, flags);
- }
+ megasas_check_and_restore_queue_depth(instance);
}
static void
(instance->pdev->device ==
PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
writel(MFI_STOP_ADP,
- &instance->reg_set->reserved_0[0]);
+ &instance->reg_set->doorbell);
} else {
writel(MFI_STOP_ADP,
&instance->reg_set->inbound_doorbell);
static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
{
int ret;
+ struct megasas_instance *instance;
+ instance = (struct megasas_instance *)scmd->device->host->hostdata;
/*
* First wait for all commands to complete
*/
- ret = megasas_generic_reset(scmd);
+ if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION)
+ ret = megasas_reset_fusion(scmd->device->host);
+ else
+ ret = megasas_generic_reset(scmd);
return ret;
}
* an alternate status (as in the case of aborted
* commands)
*/
-static void
+void
megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
u8 alt_status)
{
int exception = 0;
struct megasas_header *hdr = &cmd->frame->hdr;
unsigned long flags;
+ struct fusion_context *fusion = instance->ctrl_context;
/* flag for the retry reset */
cmd->retry_for_fw_reset = 0;
case MFI_CMD_SMP:
case MFI_CMD_STP:
case MFI_CMD_DCMD:
+ /* Check for LD map update */
+ if ((cmd->frame->dcmd.opcode == MR_DCMD_LD_MAP_GET_INFO) &&
+ (cmd->frame->dcmd.mbox.b[1] == 1)) {
+ spin_lock_irqsave(instance->host->host_lock, flags);
+ if (cmd->frame->hdr.cmd_status != 0) {
+ if (cmd->frame->hdr.cmd_status !=
+ MFI_STAT_NOT_FOUND)
+ printk(KERN_WARNING "megasas: map sync"
+ "failed, status = 0x%x.\n",
+ cmd->frame->hdr.cmd_status);
+ else {
+ megasas_return_cmd(instance, cmd);
+ spin_unlock_irqrestore(
+ instance->host->host_lock,
+ flags);
+ break;
+ }
+ } else
+ instance->map_id++;
+ megasas_return_cmd(instance, cmd);
+ if (MR_ValidateMapInfo(
+ fusion->ld_map[(instance->map_id & 1)],
+ fusion->load_balance_info))
+ fusion->fast_path_io = 1;
+ else
+ fusion->fast_path_io = 0;
+ megasas_sync_map_info(instance);
+ spin_unlock_irqrestore(instance->host->host_lock,
+ flags);
+ break;
+ }
if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) {
spin_lock_irqsave(&poll_aen_lock, flags);
* states, driver must take steps to bring it to ready state. Otherwise, it
* has to wait for the ready state.
*/
-static int
+int
megasas_transition_to_ready(struct megasas_instance* instance)
{
int i;
if ((instance->pdev->device ==
PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
(instance->pdev->device ==
- PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
-
+ PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
+ (instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_FUSION)) {
writel(
MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
- &instance->reg_set->reserved_0[0]);
+ &instance->reg_set->doorbell);
} else {
writel(
MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
case MFI_STATE_BOOT_MESSAGE_PENDING:
if ((instance->pdev->device ==
- PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
- (instance->pdev->device ==
- PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
+ PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
+ (instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
+ (instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_FUSION)) {
writel(MFI_INIT_HOTPLUG,
- &instance->reg_set->reserved_0[0]);
+ &instance->reg_set->doorbell);
} else
writel(MFI_INIT_HOTPLUG,
&instance->reg_set->inbound_doorbell);
if ((instance->pdev->device ==
PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
(instance->pdev->device ==
- PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
+ PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
+ (instance->pdev->device
+ == PCI_DEVICE_ID_LSI_FUSION)) {
writel(MFI_RESET_FLAGS,
- &instance->reg_set->reserved_0[0]);
+ &instance->reg_set->doorbell);
+ if (instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_FUSION) {
+ for (i = 0; i < (10 * 1000); i += 20) {
+ if (readl(
+ &instance->
+ reg_set->
+ doorbell) & 1)
+ msleep(20);
+ else
+ break;
+ }
+ }
} else
writel(MFI_RESET_FLAGS,
&instance->reg_set->inbound_doorbell);
static void megasas_teardown_frame_pool(struct megasas_instance *instance)
{
int i;
- u32 max_cmd = instance->max_fw_cmds;
+ u32 max_cmd = instance->max_mfi_cmds;
struct megasas_cmd *cmd;
if (!instance->frame_dma_pool)
u32 frame_count;
struct megasas_cmd *cmd;
- max_cmd = instance->max_fw_cmds;
+ max_cmd = instance->max_mfi_cmds;
/*
* Size of our frame is 64 bytes for MFI frame, followed by max SG
* megasas_free_cmds - Free all the cmds in the free cmd pool
* @instance: Adapter soft state
*/
-static void megasas_free_cmds(struct megasas_instance *instance)
+void megasas_free_cmds(struct megasas_instance *instance)
{
int i;
/* First free the MFI frame pool */
megasas_teardown_frame_pool(instance);
/* Free all the commands in the cmd_list */
- for (i = 0; i < instance->max_fw_cmds; i++)
+ for (i = 0; i < instance->max_mfi_cmds; i++)
+
kfree(instance->cmd_list[i]);
/* Free the cmd_list buffer itself */
* This array is used only to look up the megasas_cmd given the context. The
* free commands themselves are maintained in a linked list called cmd_pool.
*/
-static int megasas_alloc_cmds(struct megasas_instance *instance)
+int megasas_alloc_cmds(struct megasas_instance *instance)
{
int i;
int j;
u32 max_cmd;
struct megasas_cmd *cmd;
- max_cmd = instance->max_fw_cmds;
+ max_cmd = instance->max_mfi_cmds;
/*
* instance->cmd_list is an array of struct megasas_cmd pointers.
return -ENOMEM;
}
+ memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
for (i = 0; i < max_cmd; i++) {
instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
* does not exceed max cmds that the FW can support
*/
instance->max_fw_cmds = instance->max_fw_cmds-1;
+ instance->max_mfi_cmds = instance->max_fw_cmds;
instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
0x10;
/*
reg_set = instance->reg_set;
switch (instance->pdev->device) {
+ case PCI_DEVICE_ID_LSI_FUSION:
+ instance->instancet = &megasas_instance_template_fusion;
+ break;
case PCI_DEVICE_ID_LSI_SAS1078R:
case PCI_DEVICE_ID_LSI_SAS1078DE:
instance->instancet = &megasas_instance_template_ppc;
*/
static void megasas_release_mfi(struct megasas_instance *instance)
{
- u32 reply_q_sz = sizeof(u32) * (instance->max_fw_cmds + 1);
+ u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
- pci_free_consistent(instance->pdev, reply_q_sz,
+ if (instance->reply_queue)
+ pci_free_consistent(instance->pdev, reply_q_sz,
instance->reply_queue, instance->reply_queue_h);
megasas_free_cmds(instance);
/*
* Issue the aen registration frame
*/
- instance->instancet->fire_cmd(instance,
- cmd->frame_phys_addr, 0, instance->reg_set);
+ instance->instancet->issue_dcmd(instance, cmd);
return 0;
}
}
host->max_sectors = instance->max_sectors_per_req;
- host->cmd_per_lun = 128;
+ host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
host->max_channel = MEGASAS_MAX_CHANNELS - 1;
host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
host->max_lun = MEGASAS_MAX_LUN;
host->max_cmd_len = 16;
+ /* Fusion only supports host reset */
+ if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) {
+ host->hostt->eh_device_reset_handler = NULL;
+ host->hostt->eh_bus_reset_handler = NULL;
+ }
+
/*
* Notify the mid-layer about the new controller
*/
instance = (struct megasas_instance *)host->hostdata;
memset(instance, 0, sizeof(*instance));
atomic_set( &instance->fw_reset_no_pci_access, 0 );
+ instance->pdev = pdev;
- instance->producer = pci_alloc_consistent(pdev, sizeof(u32),
- &instance->producer_h);
- instance->consumer = pci_alloc_consistent(pdev, sizeof(u32),
- &instance->consumer_h);
+ switch (instance->pdev->device) {
+ case PCI_DEVICE_ID_LSI_FUSION:
+ {
+ struct fusion_context *fusion;
+
+ instance->ctrl_context =
+ kzalloc(sizeof(struct fusion_context), GFP_KERNEL);
+ if (!instance->ctrl_context) {
+ printk(KERN_DEBUG "megasas: Failed to allocate "
+ "memory for Fusion context info\n");
+ goto fail_alloc_dma_buf;
+ }
+ fusion = instance->ctrl_context;
+ INIT_LIST_HEAD(&fusion->cmd_pool);
+ spin_lock_init(&fusion->cmd_pool_lock);
+ }
+ break;
+ default: /* For all other supported controllers */
+
+ instance->producer =
+ pci_alloc_consistent(pdev, sizeof(u32),
+ &instance->producer_h);
+ instance->consumer =
+ pci_alloc_consistent(pdev, sizeof(u32),
+ &instance->consumer_h);
+
+ if (!instance->producer || !instance->consumer) {
+ printk(KERN_DEBUG "megasas: Failed to allocate"
+ "memory for producer, consumer\n");
+ goto fail_alloc_dma_buf;
+ }
- if (!instance->producer || !instance->consumer) {
- printk(KERN_DEBUG "megasas: Failed to allocate memory for "
- "producer, consumer\n");
- goto fail_alloc_dma_buf;
+ *instance->producer = 0;
+ *instance->consumer = 0;
+ break;
}
- *instance->producer = 0;
- *instance->consumer = 0;
megasas_poll_wait_aen = 0;
instance->flag_ieee = 0;
instance->ev = NULL;
spin_lock_init(&poll_aen_lock);
mutex_init(&instance->aen_mutex);
+ mutex_init(&instance->reset_mutex);
/*
* Initialize PCI related and misc parameters
*/
- instance->pdev = pdev;
instance->host = host;
instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
instance->init_id = MEGASAS_DEFAULT_INIT_ID;
instance->last_time = 0;
instance->disableOnlineCtrlReset = 1;
- INIT_WORK(&instance->work_init, process_fw_state_change_wq);
+ if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION)
+ INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
+ else
+ INIT_WORK(&instance->work_init, process_fw_state_change_wq);
/*
* Initialize MFI Firmware
pci_free_consistent(pdev, sizeof(u32), instance->producer,
instance->producer_h);
megasas_release_mfi(instance);
+ } else {
+ megasas_release_fusion(instance);
}
if (instance->consumer)
pci_free_consistent(pdev, sizeof(u32), instance->consumer,
if (instance->aen_cmd)
megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd);
-
+ if (instance->map_update_cmd)
+ megasas_issue_blocked_abort_cmd(instance,
+ instance->map_update_cmd);
dcmd = &cmd->frame->dcmd;
memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
* Initialize MFI Firmware
*/
- *instance->producer = 0;
- *instance->consumer = 0;
-
atomic_set(&instance->fw_outstanding, 0);
/*
if (megasas_transition_to_ready(instance))
goto fail_ready_state;
- if (megasas_issue_init_mfi(instance))
- goto fail_init_mfi;
+ switch (instance->pdev->device) {
+ case PCI_DEVICE_ID_LSI_FUSION:
+ {
+ megasas_reset_reply_desc(instance);
+ if (megasas_ioc_init_fusion(instance)) {
+ megasas_free_cmds(instance);
+ megasas_free_cmds_fusion(instance);
+ goto fail_init_mfi;
+ }
+ if (!megasas_get_map_info(instance))
+ megasas_sync_map_info(instance);
+ }
+ break;
+ default:
+ *instance->producer = 0;
+ *instance->consumer = 0;
+ if (megasas_issue_init_mfi(instance))
+ goto fail_init_mfi;
+ break;
+ }
- tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc,
- (unsigned long)instance);
+ tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
+ (unsigned long)instance);
/* Now re-enable MSI-X */
if (instance->msi_flag)
int i;
struct Scsi_Host *host;
struct megasas_instance *instance;
+ struct fusion_context *fusion;
instance = pci_get_drvdata(pdev);
instance->unload = 1;
host = instance->host;
+ fusion = instance->ctrl_context;
if (poll_mode_io)
del_timer_sync(&instance->io_completion_timer);
if (instance->msi_flag)
pci_disable_msix(instance->pdev);
- megasas_release_mfi(instance);
-
- pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
- instance->evt_detail, instance->evt_detail_h);
-
- pci_free_consistent(pdev, sizeof(u32), instance->producer,
- instance->producer_h);
-
- pci_free_consistent(pdev, sizeof(u32), instance->consumer,
- instance->consumer_h);
+ switch (instance->pdev->device) {
+ case PCI_DEVICE_ID_LSI_FUSION:
+ megasas_release_fusion(instance);
+ for (i = 0; i < 2 ; i++)
+ if (fusion->ld_map[i])
+ dma_free_coherent(&instance->pdev->dev,
+ fusion->map_sz,
+ fusion->ld_map[i],
+ fusion->
+ ld_map_phys[i]);
+ kfree(instance->ctrl_context);
+ break;
+ default:
+ megasas_release_mfi(instance);
+ pci_free_consistent(pdev,
+ sizeof(struct megasas_evt_detail),
+ instance->evt_detail,
+ instance->evt_detail_h);
+ pci_free_consistent(pdev, sizeof(u32),
+ instance->producer,
+ instance->producer_h);
+ pci_free_consistent(pdev, sizeof(u32),
+ instance->consumer,
+ instance->consumer_h);
+ break;
+ }
scsi_host_put(host);
break;
case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
case MR_EVT_FOREIGN_CFG_IMPORTED:
+ case MR_EVT_LD_STATE_CHANGE:
doscan = 1;
break;
default:
--- /dev/null
+/*
+ * Linux MegaRAID driver for SAS based RAID controllers
+ *
+ * Copyright (c) 2009-2011 LSI Corporation.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * FILE: megaraid_sas_fp.c
+ *
+ * Authors: LSI Corporation
+ * Sumant Patro
+ * Varad Talamacki
+ * Manoj Jose
+ *
+ * Send feedback to: <megaraidlinux@lsi.com>
+ *
+ * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
+ * ATTN: Linuxraid
+ */
+
+#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/smp_lock.h>
+#include <linux/uio.h>
+#include <linux/uaccess.h>
+#include <linux/fs.h>
+#include <linux/compat.h>
+#include <linux/blkdev.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 "megaraid_sas_fusion.h"
+#include <asm/div64.h>
+
+#define ABS_DIFF(a, b) (((a) > (b)) ? ((a) - (b)) : ((b) - (a)))
+#define MR_LD_STATE_OPTIMAL 3
+#define FALSE 0
+#define TRUE 1
+
+/* Prototypes */
+void
+mr_update_load_balance_params(struct MR_FW_RAID_MAP_ALL *map,
+ struct LD_LOAD_BALANCE_INFO *lbInfo);
+
+u32 mega_mod64(u64 dividend, u32 divisor)
+{
+ u64 d;
+ u32 remainder;
+
+ if (!divisor)
+ printk(KERN_ERR "megasas : DIVISOR is zero, in div fn\n");
+ d = dividend;
+ remainder = do_div(d, divisor);
+ return remainder;
+}
+
+/**
+ * @param dividend : Dividend
+ * @param divisor : Divisor
+ *
+ * @return quotient
+ **/
+u64 mega_div64_32(uint64_t dividend, uint32_t divisor)
+{
+ u32 remainder;
+ u64 d;
+
+ if (!divisor)
+ printk(KERN_ERR "megasas : DIVISOR is zero in mod fn\n");
+
+ d = dividend;
+ remainder = do_div(d, divisor);
+
+ return d;
+}
+
+struct MR_LD_RAID *MR_LdRaidGet(u32 ld, struct MR_FW_RAID_MAP_ALL *map)
+{
+ return &map->raidMap.ldSpanMap[ld].ldRaid;
+}
+
+static struct MR_SPAN_BLOCK_INFO *MR_LdSpanInfoGet(u32 ld,
+ struct MR_FW_RAID_MAP_ALL
+ *map)
+{
+ return &map->raidMap.ldSpanMap[ld].spanBlock[0];
+}
+
+static u8 MR_LdDataArmGet(u32 ld, u32 armIdx, struct MR_FW_RAID_MAP_ALL *map)
+{
+ return map->raidMap.ldSpanMap[ld].dataArmMap[armIdx];
+}
+
+static u16 MR_ArPdGet(u32 ar, u32 arm, struct MR_FW_RAID_MAP_ALL *map)
+{
+ return map->raidMap.arMapInfo[ar].pd[arm];
+}
+
+static u16 MR_LdSpanArrayGet(u32 ld, u32 span, struct MR_FW_RAID_MAP_ALL *map)
+{
+ return map->raidMap.ldSpanMap[ld].spanBlock[span].span.arrayRef;
+}
+
+static u16 MR_PdDevHandleGet(u32 pd, struct MR_FW_RAID_MAP_ALL *map)
+{
+ return map->raidMap.devHndlInfo[pd].curDevHdl;
+}
+
+u16 MR_GetLDTgtId(u32 ld, struct MR_FW_RAID_MAP_ALL *map)
+{
+ return map->raidMap.ldSpanMap[ld].ldRaid.targetId;
+}
+
+u16 MR_TargetIdToLdGet(u32 ldTgtId, struct MR_FW_RAID_MAP_ALL *map)
+{
+ return map->raidMap.ldTgtIdToLd[ldTgtId];
+}
+
+static struct MR_LD_SPAN *MR_LdSpanPtrGet(u32 ld, u32 span,
+ struct MR_FW_RAID_MAP_ALL *map)
+{
+ return &map->raidMap.ldSpanMap[ld].spanBlock[span].span;
+}
+
+/*
+ * This function will validate Map info data provided by FW
+ */
+u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
+ struct LD_LOAD_BALANCE_INFO *lbInfo)
+{
+ struct MR_FW_RAID_MAP *pFwRaidMap = &map->raidMap;
+
+ if (pFwRaidMap->totalSize !=
+ (sizeof(struct MR_FW_RAID_MAP) -sizeof(struct MR_LD_SPAN_MAP) +
+ (sizeof(struct MR_LD_SPAN_MAP) *pFwRaidMap->ldCount))) {
+ printk(KERN_ERR "megasas: map info structure size 0x%x is not matching with ld count\n",
+ (unsigned int)((sizeof(struct MR_FW_RAID_MAP) -
+ sizeof(struct MR_LD_SPAN_MAP)) +
+ (sizeof(struct MR_LD_SPAN_MAP) *
+ pFwRaidMap->ldCount)));
+ printk(KERN_ERR "megasas: span map %x, pFwRaidMap->totalSize "
+ ": %x\n", (unsigned int)sizeof(struct MR_LD_SPAN_MAP),
+ pFwRaidMap->totalSize);
+ return 0;
+ }
+
+ mr_update_load_balance_params(map, lbInfo);
+
+ return 1;
+}
+
+u32 MR_GetSpanBlock(u32 ld, u64 row, u64 *span_blk,
+ struct MR_FW_RAID_MAP_ALL *map, int *div_error)
+{
+ struct MR_SPAN_BLOCK_INFO *pSpanBlock = MR_LdSpanInfoGet(ld, map);
+ struct MR_QUAD_ELEMENT *quad;
+ struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
+ u32 span, j;
+
+ for (span = 0; span < raid->spanDepth; span++, pSpanBlock++) {
+
+ for (j = 0; j < pSpanBlock->block_span_info.noElements; j++) {
+ quad = &pSpanBlock->block_span_info.quad[j];
+
+ if (quad->diff == 0) {
+ *div_error = 1;
+ return span;
+ }
+ if (quad->logStart <= row && row <= quad->logEnd &&
+ (mega_mod64(row-quad->logStart, quad->diff)) == 0) {
+ if (span_blk != NULL) {
+ u64 blk, debugBlk;
+ blk =
+ mega_div64_32(
+ (row-quad->logStart),
+ quad->diff);
+ debugBlk = blk;
+
+ blk = (blk + quad->offsetInSpan) <<
+ raid->stripeShift;
+ *span_blk = blk;
+ }
+ return span;
+ }
+ }
+ }
+ return span;
+}
+
+/*
+******************************************************************************
+*
+* This routine calculates the arm, span and block for the specified stripe and
+* reference in stripe.
+*
+* Inputs :
+*
+* ld - Logical drive number
+* stripRow - Stripe number
+* stripRef - Reference in stripe
+*
+* Outputs :
+*
+* span - Span number
+* block - Absolute Block number in the physical disk
+*/
+u8 MR_GetPhyParams(u32 ld, u64 stripRow, u16 stripRef, u64 *pdBlock,
+ u16 *pDevHandle, struct RAID_CONTEXT *pRAID_Context,
+ struct MR_FW_RAID_MAP_ALL *map)
+{
+ struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
+ u32 pd, arRef;
+ u8 physArm, span;
+ u64 row;
+ u8 retval = TRUE;
+ int error_code = 0;
+
+ row = mega_div64_32(stripRow, raid->rowDataSize);
+
+ if (raid->level == 6) {
+ /* logical arm within row */
+ u32 logArm = mega_mod64(stripRow, raid->rowDataSize);
+ u32 rowMod, armQ, arm;
+
+ if (raid->rowSize == 0)
+ return FALSE;
+ /* get logical row mod */
+ rowMod = mega_mod64(row, raid->rowSize);
+ armQ = raid->rowSize-1-rowMod; /* index of Q drive */
+ arm = armQ+1+logArm; /* data always logically follows Q */
+ if (arm >= raid->rowSize) /* handle wrap condition */
+ arm -= raid->rowSize;
+ physArm = (u8)arm;
+ } else {
+ if (raid->modFactor == 0)
+ return FALSE;
+ physArm = MR_LdDataArmGet(ld, mega_mod64(stripRow,
+ raid->modFactor),
+ map);
+ }
+
+ if (raid->spanDepth == 1) {
+ span = 0;
+ *pdBlock = row << raid->stripeShift;
+ } else {
+ span = (u8)MR_GetSpanBlock(ld, row, pdBlock, map, &error_code);
+ if (error_code == 1)
+ return FALSE;
+ }
+
+ /* Get the array on which this span is present */
+ arRef = MR_LdSpanArrayGet(ld, span, map);
+ pd = MR_ArPdGet(arRef, physArm, map); /* Get the pd */
+
+ if (pd != MR_PD_INVALID)
+ /* Get dev handle from Pd. */
+ *pDevHandle = MR_PdDevHandleGet(pd, map);
+ else {
+ *pDevHandle = MR_PD_INVALID; /* set dev handle as invalid. */
+ if (raid->level >= 5)
+ pRAID_Context->regLockFlags = REGION_TYPE_EXCLUSIVE;
+ else if (raid->level == 1) {
+ /* Get alternate Pd. */
+ pd = MR_ArPdGet(arRef, physArm + 1, map);
+ if (pd != MR_PD_INVALID)
+ /* Get dev handle from Pd */
+ *pDevHandle = MR_PdDevHandleGet(pd, map);
+ }
+ retval = FALSE;
+ }
+
+ *pdBlock += stripRef + MR_LdSpanPtrGet(ld, span, map)->startBlk;
+ pRAID_Context->spanArm = (span << RAID_CTX_SPANARM_SPAN_SHIFT) |
+ physArm;
+ return retval;
+}
+
+/*
+******************************************************************************
+*
+* MR_BuildRaidContext function
+*
+* This function will initiate command processing. The start/end row and strip
+* information is calculated then the lock is acquired.
+* This function will return 0 if region lock was acquired OR return num strips
+*/
+u8
+MR_BuildRaidContext(struct IO_REQUEST_INFO *io_info,
+ struct RAID_CONTEXT *pRAID_Context,
+ struct MR_FW_RAID_MAP_ALL *map)
+{
+ struct MR_LD_RAID *raid;
+ u32 ld, stripSize, stripe_mask;
+ u64 endLba, endStrip, endRow, start_row, start_strip;
+ u64 regStart;
+ u32 regSize;
+ u8 num_strips, numRows;
+ u16 ref_in_start_stripe, ref_in_end_stripe;
+ u64 ldStartBlock;
+ u32 numBlocks, ldTgtId;
+ u8 isRead;
+ u8 retval = 0;
+
+ ldStartBlock = io_info->ldStartBlock;
+ numBlocks = io_info->numBlocks;
+ ldTgtId = io_info->ldTgtId;
+ isRead = io_info->isRead;
+
+ ld = MR_TargetIdToLdGet(ldTgtId, map);
+ raid = MR_LdRaidGet(ld, map);
+
+ stripSize = 1 << raid->stripeShift;
+ stripe_mask = stripSize-1;
+ /*
+ * calculate starting row and stripe, and number of strips and rows
+ */
+ start_strip = ldStartBlock >> raid->stripeShift;
+ ref_in_start_stripe = (u16)(ldStartBlock & stripe_mask);
+ endLba = ldStartBlock + numBlocks - 1;
+ ref_in_end_stripe = (u16)(endLba & stripe_mask);
+ endStrip = endLba >> raid->stripeShift;
+ num_strips = (u8)(endStrip - start_strip + 1); /* End strip */
+ if (raid->rowDataSize == 0)
+ return FALSE;
+ start_row = mega_div64_32(start_strip, raid->rowDataSize);
+ endRow = mega_div64_32(endStrip, raid->rowDataSize);
+ numRows = (u8)(endRow - start_row + 1);
+
+ /*
+ * calculate region info.
+ */
+
+ /* assume region is at the start of the first row */
+ regStart = start_row << raid->stripeShift;
+ /* assume this IO needs the full row - we'll adjust if not true */
+ regSize = stripSize;
+
+ /* If IO spans more than 1 strip, fp is not possible
+ FP is not possible for writes on non-0 raid levels
+ FP is not possible if LD is not capable */
+ if (num_strips > 1 || (!isRead && raid->level != 0) ||
+ !raid->capability.fpCapable) {
+ io_info->fpOkForIo = FALSE;
+ } else {
+ io_info->fpOkForIo = TRUE;
+ }
+
+ if (numRows == 1) {
+ /* single-strip IOs can always lock only the data needed */
+ if (num_strips == 1) {
+ regStart += ref_in_start_stripe;
+ regSize = numBlocks;
+ }
+ /* multi-strip IOs always need to full stripe locked */
+ } else {
+ if (start_strip == (start_row + 1) * raid->rowDataSize - 1) {
+ /* If the start strip is the last in the start row */
+ regStart += ref_in_start_stripe;
+ regSize = stripSize - ref_in_start_stripe;
+ /* initialize count to sectors from startref to end
+ of strip */
+ }
+
+ if (numRows > 2)
+ /* Add complete rows in the middle of the transfer */
+ regSize += (numRows-2) << raid->stripeShift;
+
+ /* if IO ends within first strip of last row */
+ if (endStrip == endRow*raid->rowDataSize)
+ regSize += ref_in_end_stripe+1;
+ else
+ regSize += stripSize;
+ }
+
+ pRAID_Context->timeoutValue = map->raidMap.fpPdIoTimeoutSec;
+ pRAID_Context->regLockFlags = (isRead) ? REGION_TYPE_SHARED_READ :
+ raid->regTypeReqOnWrite;
+ pRAID_Context->VirtualDiskTgtId = raid->targetId;
+ pRAID_Context->regLockRowLBA = regStart;
+ pRAID_Context->regLockLength = regSize;
+ pRAID_Context->configSeqNum = raid->seqNum;
+
+ /*Get Phy Params only if FP capable, or else leave it to MR firmware
+ to do the calculation.*/
+ if (io_info->fpOkForIo) {
+ retval = MR_GetPhyParams(ld, start_strip, ref_in_start_stripe,
+ &io_info->pdBlock,
+ &io_info->devHandle, pRAID_Context,
+ map);
+ /* If IO on an invalid Pd, then FP i snot possible */
+ if (io_info->devHandle == MR_PD_INVALID)
+ io_info->fpOkForIo = FALSE;
+ return retval;
+ } else if (isRead) {
+ uint stripIdx;
+ for (stripIdx = 0; stripIdx < num_strips; stripIdx++) {
+ if (!MR_GetPhyParams(ld, start_strip + stripIdx,
+ ref_in_start_stripe,
+ &io_info->pdBlock,
+ &io_info->devHandle,
+ pRAID_Context, map))
+ return TRUE;
+ }
+ }
+ return TRUE;
+}
+
+void
+mr_update_load_balance_params(struct MR_FW_RAID_MAP_ALL *map,
+ struct LD_LOAD_BALANCE_INFO *lbInfo)
+{
+ int ldCount;
+ u16 ld;
+ struct MR_LD_RAID *raid;
+
+ for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES; ldCount++) {
+ ld = MR_TargetIdToLdGet(ldCount, map);
+ if (ld >= MAX_LOGICAL_DRIVES) {
+ lbInfo[ldCount].loadBalanceFlag = 0;
+ continue;
+ }
+
+ raid = MR_LdRaidGet(ld, map);
+
+ /* Two drive Optimal RAID 1 */
+ if ((raid->level == 1) && (raid->rowSize == 2) &&
+ (raid->spanDepth == 1) && raid->ldState ==
+ MR_LD_STATE_OPTIMAL) {
+ u32 pd, arRef;
+
+ lbInfo[ldCount].loadBalanceFlag = 1;
+
+ /* Get the array on which this span is present */
+ arRef = MR_LdSpanArrayGet(ld, 0, map);
+
+ /* Get the Pd */
+ pd = MR_ArPdGet(arRef, 0, map);
+ /* Get dev handle from Pd */
+ lbInfo[ldCount].raid1DevHandle[0] =
+ MR_PdDevHandleGet(pd, map);
+ /* Get the Pd */
+ pd = MR_ArPdGet(arRef, 1, map);
+
+ /* Get the dev handle from Pd */
+ lbInfo[ldCount].raid1DevHandle[1] =
+ MR_PdDevHandleGet(pd, map);
+ } else
+ lbInfo[ldCount].loadBalanceFlag = 0;
+ }
+}
+
+u8 megasas_get_best_arm(struct LD_LOAD_BALANCE_INFO *lbInfo, u8 arm, u64 block,
+ u32 count)
+{
+ u16 pend0, pend1;
+ u64 diff0, diff1;
+ u8 bestArm;
+
+ /* get the pending cmds for the data and mirror arms */
+ pend0 = atomic_read(&lbInfo->scsi_pending_cmds[0]);
+ pend1 = atomic_read(&lbInfo->scsi_pending_cmds[1]);
+
+ /* Determine the disk whose head is nearer to the req. block */
+ diff0 = ABS_DIFF(block, lbInfo->last_accessed_block[0]);
+ diff1 = ABS_DIFF(block, lbInfo->last_accessed_block[1]);
+ bestArm = (diff0 <= diff1 ? 0 : 1);
+
+ if ((bestArm == arm && pend0 > pend1 + 16) ||
+ (bestArm != arm && pend1 > pend0 + 16))
+ bestArm ^= 1;
+
+ /* Update the last accessed block on the correct pd */
+ lbInfo->last_accessed_block[bestArm] = block + count - 1;
+
+ return bestArm;
+}
+
+u16 get_updated_dev_handle(struct LD_LOAD_BALANCE_INFO *lbInfo,
+ struct IO_REQUEST_INFO *io_info)
+{
+ u8 arm, old_arm;
+ u16 devHandle;
+
+ old_arm = lbInfo->raid1DevHandle[0] == io_info->devHandle ? 0 : 1;
+
+ /* get best new arm */
+ arm = megasas_get_best_arm(lbInfo, old_arm, io_info->ldStartBlock,
+ io_info->numBlocks);
+ devHandle = lbInfo->raid1DevHandle[arm];
+ atomic_inc(&lbInfo->scsi_pending_cmds[arm]);
+
+ return devHandle;
+}
--- /dev/null
+/*
+ * Linux MegaRAID driver for SAS based RAID controllers
+ *
+ * Copyright (c) 2009-2011 LSI Corporation.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * FILE: megaraid_sas_fusion.c
+ *
+ * Authors: LSI Corporation
+ * Sumant Patro
+ * Adam Radford <linuxraid@lsi.com>
+ *
+ * Send feedback to: <megaraidlinux@lsi.com>
+ *
+ * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
+ * ATTN: Linuxraid
+ */
+
+#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/smp_lock.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 "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 megasas_is_ldio(struct scsi_cmnd *cmd);
+int
+wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
+
+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);
+
+u8
+MR_BuildRaidContext(struct IO_REQUEST_INFO *io_info,
+ struct RAID_CONTEXT *pRAID_Context,
+ struct MR_FW_RAID_MAP_ALL *map);
+u16 MR_TargetIdToLdGet(u32 ldTgtId, struct MR_FW_RAID_MAP_ALL *map);
+struct MR_LD_RAID *MR_LdRaidGet(u32 ld, struct MR_FW_RAID_MAP_ALL *map);
+
+u16 MR_GetLDTgtId(u32 ld, struct MR_FW_RAID_MAP_ALL *map);
+u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
+ struct LD_LOAD_BALANCE_INFO *lbInfo);
+u16 get_updated_dev_handle(struct LD_LOAD_BALANCE_INFO *lbInfo,
+ struct IO_REQUEST_INFO *in_info);
+int megasas_transition_to_ready(struct megasas_instance *instance);
+void megaraid_sas_kill_hba(struct megasas_instance *instance);
+
+extern u32 megasas_dbg_lvl;
+
+/**
+ * megasas_enable_intr_fusion - Enables interrupts
+ * @regs: MFI register set
+ */
+void
+megasas_enable_intr_fusion(struct megasas_register_set __iomem *regs)
+{
+ writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
+
+ /* Dummy readl to force pci flush */
+ readl(®s->outbound_intr_mask);
+}
+
+/**
+ * megasas_disable_intr_fusion - Disables interrupt
+ * @regs: MFI register set
+ */
+void
+megasas_disable_intr_fusion(struct megasas_register_set __iomem *regs)
+{
+ u32 mask = 0xFFFFFFFF;
+ u32 status;
+
+ writel(mask, ®s->outbound_intr_mask);
+ /* Dummy readl to force pci flush */
+ status = readl(®s->outbound_intr_mask);
+}
+
+int
+megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs)
+{
+ u32 status;
+ /*
+ * Check if it is our interrupt
+ */
+ status = readl(®s->outbound_intr_status);
+
+ if (status & 1) {
+ writel(status, ®s->outbound_intr_status);
+ readl(®s->outbound_intr_status);
+ return 1;
+ }
+ if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
+ return 0;
+
+ /*
+ * dummy read to flush PCI
+ */
+ readl(®s->outbound_intr_status);
+
+ return 1;
+}
+
+/**
+ * megasas_get_cmd_fusion - Get a command from the free pool
+ * @instance: Adapter soft state
+ *
+ * Returns a free command from the pool
+ */
+struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
+ *instance)
+{
+ unsigned long flags;
+ struct fusion_context *fusion =
+ (struct fusion_context *)instance->ctrl_context;
+ struct megasas_cmd_fusion *cmd = NULL;
+
+ spin_lock_irqsave(&fusion->cmd_pool_lock, flags);
+
+ if (!list_empty(&fusion->cmd_pool)) {
+ cmd = list_entry((&fusion->cmd_pool)->next,
+ struct megasas_cmd_fusion, list);
+ list_del_init(&cmd->list);
+ } else {
+ printk(KERN_ERR "megasas: Command pool (fusion) empty!\n");
+ }
+
+ spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags);
+ return cmd;
+}
+
+/**
+ * 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
+ */
+static inline void
+megasas_return_cmd_fusion(struct megasas_instance *instance,
+ struct megasas_cmd_fusion *cmd)
+{
+ unsigned long flags;
+ struct fusion_context *fusion =
+ (struct fusion_context *)instance->ctrl_context;
+
+ spin_lock_irqsave(&fusion->cmd_pool_lock, flags);
+
+ cmd->scmd = NULL;
+ cmd->sync_cmd_idx = (u32)ULONG_MAX;
+ list_add_tail(&cmd->list, &fusion->cmd_pool);
+
+ spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags);
+}
+
+/**
+ * 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) {
+ printk(KERN_ERR "megasas: 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;
+
+ INIT_LIST_HEAD(&fusion->cmd_pool);
+}
+
+/**
+ * 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) {
+ printk(KERN_DEBUG "megasas: failed to setup request pool "
+ "fusion\n");
+ 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) {
+ printk(KERN_DEBUG "megasas: 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) {
+ printk(KERN_DEBUG "megasas: 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;
+ 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) {
+ printk(KERN_ERR "megasas; Could not allocate memory for "
+ "request_frames\n");
+ goto fail_req_desc;
+ }
+
+ fusion->reply_frames_desc_pool =
+ pci_pool_create("reply_frames pool", instance->pdev,
+ fusion->reply_alloc_sz, 16, 0);
+
+ if (!fusion->reply_frames_desc_pool) {
+ printk(KERN_ERR "megasas; 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) {
+ printk(KERN_ERR "megasas; 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; i++, reply_desc++)
+ reply_desc->Words = 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) {
+ printk(KERN_ERR "megasas: 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) {
+ printk(KERN_ERR "megasas: 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 = kmalloc(sizeof(struct megasas_cmd_fusion *)
+ *max_cmd, GFP_KERNEL);
+
+ if (!fusion->cmd_list) {
+ printk(KERN_DEBUG "megasas: out of memory. Could not alloc "
+ "memory for cmd_list_fusion\n");
+ goto fail_cmd_list;
+ }
+
+ memset(fusion->cmd_list, 0, sizeof(struct megasas_cmd_fusion *)
+ *max_cmd);
+
+ 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]) {
+ printk(KERN_ERR "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 = (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;
+
+ list_add_tail(&cmd->list, &fusion->cmd_pool);
+ }
+
+ /*
+ * Create a frame pool and assign one frame to each cmd
+ */
+ if (megasas_create_frame_pool_fusion(instance)) {
+ printk(KERN_DEBUG "megasas: 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 i;
+ struct megasas_header *frame_hdr = &cmd->frame->hdr;
+
+ u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000;
+
+ /*
+ * 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 0;
+}
+
+/**
+ * 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;
+ u32 context;
+ struct megasas_cmd *cmd;
+ u8 ret;
+ struct fusion_context *fusion;
+ union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
+ int i;
+ struct megasas_header *frame_hdr;
+
+ fusion = instance->ctrl_context;
+
+ cmd = megasas_get_cmd(instance);
+
+ if (!cmd) {
+ printk(KERN_ERR "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) {
+ printk(KERN_ERR "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 = MPI2_VERSION;
+ IOCInitMessage->HeaderVersion = MPI2_HEADER_VERSION;
+ IOCInitMessage->SystemRequestFrameSize =
+ MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4;
+
+ IOCInitMessage->ReplyDescriptorPostQueueDepth = fusion->reply_q_depth;
+ IOCInitMessage->ReplyDescriptorPostQueueAddress =
+ fusion->reply_frames_desc_phys;
+ IOCInitMessage->SystemRequestFrameBaseAddress =
+ fusion->io_request_frames_phys;
+
+ init_frame = (struct megasas_init_frame *)cmd->frame;
+ memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
+
+ frame_hdr = &cmd->frame->hdr;
+ context = init_frame->context;
+ init_frame->context = context;
+
+ frame_hdr->cmd_status = 0xFF;
+ frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
+
+ init_frame->cmd = MFI_CMD_INIT;
+ init_frame->cmd_status = 0xFF;
+
+ init_frame->queue_info_new_phys_addr_lo = ioc_init_handle;
+ init_frame->data_xfer_len = sizeof(struct MPI2_IOC_INIT_REQUEST);
+
+ req_desc =
+ (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)fusion->req_frames_desc;
+
+ req_desc->Words = 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->reg_set);
+
+ for (i = 0; i < (10 * 1000); i += 20) {
+ if (readl(&instance->reg_set->doorbell) & 1)
+ msleep(20);
+ else
+ break;
+ }
+
+ instance->instancet->fire_cmd(instance, req_desc->u.low,
+ req_desc->u.high, instance->reg_set);
+
+ wait_and_poll(instance, cmd);
+
+ frame_hdr = &cmd->frame->hdr;
+ if (frame_hdr->cmd_status != 0) {
+ ret = 1;
+ goto fail_fw_init;
+ }
+ printk(KERN_ERR "megasas:IOC 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_return_cmd_for_smid - Returns a cmd_fusion for a SMID
+ * @instance: Adapter soft state
+ *
+ */
+void
+megasas_return_cmd_for_smid(struct megasas_instance *instance, u16 smid)
+{
+ struct fusion_context *fusion;
+ struct megasas_cmd_fusion *cmd;
+
+ fusion = instance->ctrl_context;
+ cmd = fusion->cmd_list[smid - 1];
+ megasas_return_cmd_fusion(instance, cmd);
+}
+
+/*
+ * 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.
+ */
+static int
+megasas_get_ld_map_info(struct megasas_instance *instance)
+{
+ int ret = 0;
+ struct megasas_cmd *cmd;
+ struct megasas_dcmd_frame *dcmd;
+ struct MR_FW_RAID_MAP_ALL *ci;
+ dma_addr_t ci_h = 0;
+ u32 size_map_info;
+ struct fusion_context *fusion;
+
+ cmd = megasas_get_cmd(instance);
+
+ if (!cmd) {
+ printk(KERN_DEBUG "megasas: Failed to get cmd for map info.\n");
+ return -ENOMEM;
+ }
+
+ fusion = instance->ctrl_context;
+
+ if (!fusion) {
+ megasas_return_cmd(instance, cmd);
+ return 1;
+ }
+
+ dcmd = &cmd->frame->dcmd;
+
+ size_map_info = sizeof(struct MR_FW_RAID_MAP) +
+ (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
+
+ ci = fusion->ld_map[(instance->map_id & 1)];
+ ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
+
+ if (!ci) {
+ printk(KERN_DEBUG "Failed to alloc mem for ld_map_info\n");
+ megasas_return_cmd(instance, cmd);
+ return -ENOMEM;
+ }
+
+ memset(ci, 0, sizeof(*ci));
+ memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
+
+ dcmd->cmd = MFI_CMD_DCMD;
+ dcmd->cmd_status = 0xFF;
+ dcmd->sge_count = 1;
+ dcmd->flags = MFI_FRAME_DIR_READ;
+ dcmd->timeout = 0;
+ dcmd->pad_0 = 0;
+ dcmd->data_xfer_len = size_map_info;
+ dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO;
+ dcmd->sgl.sge32[0].phys_addr = ci_h;
+ dcmd->sgl.sge32[0].length = size_map_info;
+
+ if (!megasas_issue_polled(instance, cmd))
+ ret = 0;
+ else {
+ printk(KERN_ERR "megasas: Get LD Map Info Failed\n");
+ ret = -1;
+ }
+
+ 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(fusion->ld_map[(instance->map_id & 1)],
+ fusion->load_balance_info)) {
+ 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_FW_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) {
+ printk(KERN_DEBUG "megasas: 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_map[instance->map_id & 1];
+
+ num_lds = 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, sizeof(struct MR_FW_RAID_MAP_ALL));
+
+ 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 = sizeof(struct MR_FW_RAID_MAP) +
+ (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
+
+ dcmd->cmd = MFI_CMD_DCMD;
+ dcmd->cmd_status = 0xFF;
+ dcmd->sge_count = 1;
+ dcmd->flags = MFI_FRAME_DIR_WRITE;
+ dcmd->timeout = 0;
+ dcmd->pad_0 = 0;
+ dcmd->data_xfer_len = size_map_info;
+ dcmd->mbox.b[0] = num_lds;
+ dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
+ dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO;
+ dcmd->sgl.sge32[0].phys_addr = ci_h;
+ dcmd->sgl.sge32[0].length = size_map_info;
+
+ instance->map_update_cmd = cmd;
+
+ instance->instancet->issue_dcmd(instance, cmd);
+
+ return ret;
+}
+
+/**
+ * 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;
+ int i = 0;
+
+ 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 internal cmds (DCMD) need to have MFI frames */
+ instance->max_mfi_cmds = MEGASAS_INT_CMDS;
+
+ max_cmd = instance->max_fw_cmds;
+
+ fusion->reply_q_depth = ((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 */
+
+ 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);
+
+ instance->max_num_sge = 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;
+
+ fusion->last_reply_idx = 0;
+
+ /*
+ * 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;
+
+ instance->flag_ieee = 1;
+
+ fusion->map_sz = sizeof(struct MR_FW_RAID_MAP) +
+ (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
+
+ fusion->fast_path_io = 0;
+
+ for (i = 0; i < 2; i++) {
+ fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
+ fusion->map_sz,
+ &fusion->ld_map_phys[i],
+ GFP_KERNEL);
+ if (!fusion->ld_map[i]) {
+ printk(KERN_ERR "megasas: 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_alloc_cmds:
+fail_alloc_mfi_cmds:
+fail_map_info:
+ if (i == 1)
+ dma_free_coherent(&instance->pdev->dev, fusion->map_sz,
+ fusion->ld_map[0], fusion->ld_map_phys[0]);
+fail_ioc_init:
+ return 1;
+}
+
+/**
+ * megasas_fire_cmd_fusion - Sends command to the FW
+ * @frame_phys_addr : Physical address of cmd
+ * @frame_count : Number of frames for the command
+ * @regs : MFI register set
+ */
+void
+megasas_fire_cmd_fusion(struct megasas_instance *instance,
+ dma_addr_t req_desc_lo,
+ u32 req_desc_hi,
+ struct megasas_register_set __iomem *regs)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&instance->hba_lock, flags);
+
+ writel(req_desc_lo,
+ &(regs)->inbound_low_queue_port);
+ writel(req_desc_hi, &(regs)->inbound_high_queue_port);
+ spin_unlock_irqrestore(&instance->hba_lock, flags);
+}
+
+/**
+ * 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;
+
+ default:
+ printk(KERN_DEBUG "megasas: 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;
+ int sge_count, sge_idx;
+ struct scatterlist *os_sgl;
+ struct fusion_context *fusion;
+
+ fusion = instance->ctrl_context;
+
+ cmd->io_request->ChainOffset = 0;
+
+ sge_count = scsi_dma_map(scp);
+
+ BUG_ON(sge_count < 0);
+
+ if (sge_count > instance->max_num_sge || !sge_count)
+ return sge_count;
+
+ if (sge_count > fusion->max_sge_in_main_msg) {
+ /* One element to store the chain info */
+ sge_idx = fusion->max_sge_in_main_msg - 1;
+ } else
+ sge_idx = sge_count;
+
+ scsi_for_each_sg(scp, os_sgl, sge_count, i) {
+ sgl_ptr->Length = sg_dma_len(os_sgl);
+ sgl_ptr->Address = sg_dma_address(os_sgl);
+ sgl_ptr->Flags = 0;
+ 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;
+ cmd->io_request->ChainOffset =
+ fusion->chain_offset_io_request;
+ sg_chain = sgl_ptr;
+ /* Prepare chain element */
+ sg_chain->NextChainOffset = 0;
+ sg_chain->Flags = (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
+ MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
+ sg_chain->Length = (sizeof(union MPI2_SGE_IO_UNION)
+ *(sge_count - sg_processed));
+ sg_chain->Address = cmd->sg_frame_phys_addr;
+
+ sgl_ptr =
+ (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
+ }
+ }
+
+ 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_FW_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, flagvals, groupnum, control;
+
+ /* 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 = 0xffff;
+
+ io_request->DataLength = num_blocks * 512;
+ io_request->IoFlags = 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 =
+ 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 =
+ MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
+ MPI2_SCSIIO_EEDPFLAGS_INSERT_OP;
+ }
+ io_request->Control |= (0x4 << 26);
+ io_request->EEDPBlockSize = MEGASAS_EEDPBLOCKSIZE;
+ } 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);
+
+ cdb_len = 10;
+ }
+
+ /* 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;
+ 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_FW_RAID_MAP_ALL *local_map_ptr;
+
+ device_id = MEGASAS_DEV_INDEX(instance, scp);
+
+ fusion = instance->ctrl_context;
+
+ io_request = cmd->io_request;
+ io_request->RaidContext.VirtualDiskTgtId = 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) {
+ io_request->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) {
+ io_request->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) {
+ io_request->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) {
+ io_request->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 = io_request->DataLength;
+ io_info.ldTgtId = device_id;
+
+ if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
+ io_info.isRead = 1;
+
+ local_map_ptr = fusion->ld_map[(instance->map_id & 1)];
+
+ if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >=
+ MAX_LOGICAL_DRIVES) || (!fusion->fast_path_io)) {
+ io_request->RaidContext.regLockFlags = 0;
+ fp_possible = 0;
+ } else {
+ if (MR_BuildRaidContext(&io_info, &io_request->RaidContext,
+ local_map_ptr))
+ fp_possible = io_info.fpOkForIo;
+ }
+
+ if (fp_possible) {
+ megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
+ local_map_ptr, start_lba_lo);
+ io_request->DataLength = scsi_bufflen(scp);
+ 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->load_balance_info[device_id].loadBalanceFlag) &&
+ (io_info.isRead)) {
+ io_info.devHandle =
+ get_updated_dev_handle(
+ &fusion->load_balance_info[device_id],
+ &io_info);
+ scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
+ } else
+ scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
+ cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
+ io_request->DevHandle = io_info.devHandle;
+ } else {
+ io_request->RaidContext.timeoutValue =
+ local_map_ptr->raidMap.fpPdIoTimeoutSec;
+ io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
+ io_request->DevHandle = device_id;
+ cmd->request_desc->SCSIIO.RequestFlags =
+ (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
+ << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
+ } /* Not FP */
+}
+
+/**
+ * megasas_build_dcdb_fusion - Prepares IOs to devices
+ * @instance: Adapter soft state
+ * @scp: SCSI command
+ * @cmd: Command to be prepared
+ *
+ * Prepares the io_request frame for non-io cmds
+ */
+static void
+megasas_build_dcdb_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_FW_RAID_MAP_ALL *local_map_ptr;
+ struct fusion_context *fusion = instance->ctrl_context;
+
+ io_request = cmd->io_request;
+ device_id = MEGASAS_DEV_INDEX(instance, scmd);
+ pd_index = (scmd->device->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
+ +scmd->device->id;
+ local_map_ptr = fusion->ld_map[(instance->map_id & 1)];
+
+ /* Check if this is a system PD I/O */
+ if ((instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) &&
+ (instance->pd_list[pd_index].driveType == TYPE_DISK)) {
+ io_request->Function = 0;
+ io_request->DevHandle =
+ local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
+ io_request->RaidContext.timeoutValue =
+ local_map_ptr->raidMap.fpPdIoTimeoutSec;
+ io_request->RaidContext.regLockFlags = 0;
+ io_request->RaidContext.regLockRowLBA = 0;
+ io_request->RaidContext.regLockLength = 0;
+ io_request->RaidContext.RAIDFlags =
+ MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD <<
+ MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
+ cmd->request_desc->SCSIIO.RequestFlags =
+ (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
+ MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
+ } else {
+ io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
+ io_request->DevHandle = device_id;
+ cmd->request_desc->SCSIIO.RequestFlags =
+ (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
+ MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
+ }
+ io_request->RaidContext.VirtualDiskTgtId = device_id;
+ io_request->LUN[0] = scmd->device->lun;
+ io_request->DataLength = scsi_bufflen(scmd);
+}
+
+/**
+ * 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)
+{
+ u32 device_id, sge_count;
+ struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
+
+ device_id = MEGASAS_DEV_INDEX(instance, scp);
+
+ /* Zero out some fields so they don't get reused */
+ io_request->LUN[0] = 0;
+ 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->IoFlags = 0;
+ io_request->RaidContext.RAIDFlags = 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 = scp->cmd_len;
+
+ if (megasas_is_ldio(scp))
+ megasas_build_ldio_fusion(instance, scp, cmd);
+ else
+ megasas_build_dcdb_fusion(instance, scp, cmd);
+
+ /*
+ * 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) {
+ printk(KERN_ERR "megasas: Error. sge_count (0x%x) exceeds "
+ "max (0x%x) allowed\n", sge_count,
+ instance->max_num_sge);
+ return 1;
+ }
+
+ io_request->RaidContext.numSGE = sge_count;
+
+ io_request->SGLFlags = MPI2_SGE_FLAGS_64_BIT_ADDRESSING;
+
+ if (scp->sc_data_direction == PCI_DMA_TODEVICE)
+ io_request->Control |= MPI2_SCSIIO_CONTROL_WRITE;
+ else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
+ io_request->Control |= MPI2_SCSIIO_CONTROL_READ;
+
+ io_request->SGLOffset0 =
+ offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
+
+ io_request->SenseBufferLowAddress = 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) {
+ printk(KERN_ERR "megasas: Invalid SMID (0x%x)request for "
+ "descriptor\n", index);
+ 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);
+ if (!cmd)
+ return SCSI_MLQUEUE_HOST_BUSY;
+
+ 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;
+ cmd->request_desc->Words = 0;
+
+ if (megasas_build_io_fusion(instance, scmd, cmd)) {
+ megasas_return_cmd_fusion(instance, cmd);
+ printk(KERN_ERR "megasas: Error building command.\n");
+ cmd->request_desc = NULL;
+ return 1;
+ }
+
+ req_desc = cmd->request_desc;
+ req_desc->SCSIIO.SMID = index;
+
+ if (cmd->io_request->ChainOffset != 0 &&
+ cmd->io_request->ChainOffset != 0xF)
+ printk(KERN_ERR "megasas: The chain offset value is not "
+ "correct : %x\n", cmd->io_request->ChainOffset);
+
+ /*
+ * Issue the command to the FW
+ */
+ atomic_inc(&instance->fw_outstanding);
+
+ instance->instancet->fire_cmd(instance,
+ req_desc->u.low, req_desc->u.high,
+ instance->reg_set);
+
+ 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)
+{
+ 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, arm;
+ u32 status, extStatus, device_id;
+ union desc_value d_val;
+ struct LD_LOAD_BALANCE_INFO *lbinfo;
+
+ fusion = instance->ctrl_context;
+
+ if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
+ return IRQ_HANDLED;
+
+ desc = fusion->reply_frames_desc;
+ desc += fusion->last_reply_idx;
+
+ 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;
+
+ d_val.word = desc->Words;
+
+ num_completed = 0;
+
+ while ((d_val.u.low != UINT_MAX) && (d_val.u.high != UINT_MAX)) {
+ smid = 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;
+
+ 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(instance,
+ cmd_fusion->scmd);
+ lbinfo = &fusion->load_balance_info[device_id];
+ if (cmd_fusion->scmd->SCp.Status &
+ MEGASAS_LOAD_BALANCE_FLAG) {
+ arm = lbinfo->raid1DevHandle[0] ==
+ cmd_fusion->io_request->DevHandle ? 0 :
+ 1;
+ atomic_dec(&lbinfo->scsi_pending_cmds[arm]);
+ 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)
+ printk(KERN_ERR "\nmegasas: FAST 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_dma_unmap(cmd_fusion->scmd);
+ cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
+ scsi_io_req->RaidContext.status = 0;
+ scsi_io_req->RaidContext.exStatus = 0;
+ megasas_return_cmd_fusion(instance, cmd_fusion);
+ 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];
+ megasas_complete_cmd(instance, cmd_mfi, DID_OK);
+ cmd_fusion->flags = 0;
+ megasas_return_cmd_fusion(instance, cmd_fusion);
+
+ break;
+ }
+
+ fusion->last_reply_idx++;
+ if (fusion->last_reply_idx >= fusion->reply_q_depth)
+ fusion->last_reply_idx = 0;
+
+ desc->Words = ULLONG_MAX;
+ num_completed++;
+
+ /* Get the next reply descriptor */
+ if (!fusion->last_reply_idx)
+ desc = fusion->reply_frames_desc;
+ 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;
+ }
+
+ if (!num_completed)
+ return IRQ_NONE;
+
+ wmb();
+ writel(fusion->last_reply_idx,
+ &instance->reg_set->reply_post_host_index);
+
+ 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;
+
+ /* 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);
+
+ spin_lock_irqsave(&instance->completion_lock, flags);
+ complete_cmd_fusion(instance);
+ spin_unlock_irqrestore(&instance->completion_lock, flags);
+}
+
+/**
+ * megasas_isr_fusion - isr entry point
+ */
+irqreturn_t megasas_isr_fusion(int irq, void *devp)
+{
+ struct megasas_instance *instance = (struct megasas_instance *)devp;
+ u32 mfiStatus, fw_state;
+
+ if (!instance->msi_flag) {
+ 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))
+ return IRQ_HANDLED;
+
+ if (!complete_cmd_fusion(instance)) {
+ /* 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;
+ if (fw_state == MFI_STATE_FAULT)
+ 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;
+
+ cmd = megasas_get_cmd_fusion(instance);
+ if (!cmd)
+ return 1;
+
+ /* Save the smid. To be used for returning the cmd */
+ mfi_cmd->context.smid = cmd->index;
+
+ cmd->sync_cmd_idx = mfi_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 & MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)
+ cmd->flags = MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
+
+ fusion = instance->ctrl_context;
+ io_req = cmd->io_request;
+ 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 = mfi_cmd->frame_phys_addr;
+
+ mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
+ MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
+
+ mpi25_ieee_chain->Length = MEGASAS_MAX_SZ_CHAIN_FRAME;
+
+ 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)) {
+ printk(KERN_ERR "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 = 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;
+ union desc_value d_val;
+
+ req_desc = build_mpt_cmd(instance, cmd);
+ if (!req_desc) {
+ printk(KERN_ERR "Couldn't issue MFI pass thru cmd\n");
+ return;
+ }
+ d_val.word = req_desc->Words;
+
+ instance->instancet->fire_cmd(instance, req_desc->u.low,
+ req_desc->u.high, instance->reg_set);
+}
+
+/**
+ * megasas_release_fusion - Reverses the FW initialization
+ * @intance: 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_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 */
+int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance)
+{
+ int i, outstanding, retval = 0;
+ u32 fw_state, wait_time = MEGASAS_RESET_WAIT_TIME;
+
+ for (i = 0; i < wait_time; 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) {
+ printk(KERN_WARNING "megasas: Found FW in FAULT state,"
+ " will reset adapter.\n");
+ retval = 1;
+ goto out;
+ }
+
+ outstanding = atomic_read(&instance->fw_outstanding);
+ if (!outstanding)
+ goto out;
+
+ if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
+ printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
+ "commands to complete\n", i, outstanding);
+ megasas_complete_cmd_dpc_fusion(
+ (unsigned long)instance);
+ }
+ msleep(1000);
+ }
+
+ if (atomic_read(&instance->fw_outstanding)) {
+ printk("megaraid_sas: pending commands remain after waiting, "
+ "will reset adapter.\n");
+ retval = 1;
+ }
+out:
+ return retval;
+}
+
+void megasas_reset_reply_desc(struct megasas_instance *instance)
+{
+ int i;
+ struct fusion_context *fusion;
+ union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
+
+ fusion = instance->ctrl_context;
+ fusion->last_reply_idx = 0;
+ reply_desc = fusion->reply_frames_desc;
+ for (i = 0 ; i < fusion->reply_q_depth; i++, reply_desc++)
+ reply_desc->Words = ULLONG_MAX;
+}
+
+/* Core fusion reset function */
+int megasas_reset_fusion(struct Scsi_Host *shost)
+{
+ int retval = SUCCESS, i, j, retry = 0;
+ struct megasas_instance *instance;
+ struct megasas_cmd_fusion *cmd_fusion;
+ struct fusion_context *fusion;
+ struct megasas_cmd *cmd_mfi;
+ union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
+ u32 host_diag, abs_state;
+
+ instance = (struct megasas_instance *)shost->hostdata;
+ fusion = instance->ctrl_context;
+
+ mutex_lock(&instance->reset_mutex);
+ set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
+ instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
+ instance->instancet->disable_intr(instance->reg_set);
+ msleep(1000);
+
+ if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
+ printk(KERN_WARNING "megaraid_sas: Hardware critical error, "
+ "returning FAILED.\n");
+ retval = FAILED;
+ goto out;
+ }
+
+ /* First try waiting for commands to complete */
+ if (megasas_wait_for_outstanding_fusion(instance)) {
+ printk(KERN_WARNING "megaraid_sas: resetting fusion "
+ "adapter.\n");
+ /* Now return commands back to the OS */
+ for (i = 0 ; i < instance->max_fw_cmds; i++) {
+ cmd_fusion = fusion->cmd_list[i];
+ if (cmd_fusion->scmd) {
+ scsi_dma_unmap(cmd_fusion->scmd);
+ cmd_fusion->scmd->result = (DID_RESET << 16);
+ cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
+ megasas_return_cmd_fusion(instance, cmd_fusion);
+ atomic_dec(&instance->fw_outstanding);
+ }
+ }
+
+ if (instance->disableOnlineCtrlReset == 1) {
+ /* Reset not supported, kill adapter */
+ printk(KERN_WARNING "megaraid_sas: Reset not supported"
+ ", killing adapter.\n");
+ megaraid_sas_kill_hba(instance);
+ 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++) {
+ 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);
+ while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
+ msleep(100);
+ host_diag =
+ readl(&instance->reg_set->fusion_host_diag);
+ if (retry++ == 100) {
+ printk(KERN_WARNING "megaraid_sas: "
+ "Host diag unlock failed!\n");
+ 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) {
+ printk(KERN_WARNING "megaraid_sas: "
+ "Diag reset adapter never "
+ "cleared!\n");
+ break;
+ }
+ }
+ if (host_diag & HOST_DIAG_RESET_ADAPTER)
+ continue;
+
+ abs_state =
+ instance->instancet->read_fw_status_reg(
+ instance->reg_set);
+ retry = 0;
+
+ while ((abs_state <= MFI_STATE_FW_INIT) &&
+ (retry++ < 1000)) {
+ msleep(100);
+ abs_state =
+ instance->instancet->read_fw_status_reg(
+ instance->reg_set);
+ }
+ if (abs_state <= MFI_STATE_FW_INIT) {
+ printk(KERN_WARNING "megaraid_sas: firmware "
+ "state < MFI_STATE_FW_INIT, state = "
+ "0x%x\n", abs_state);
+ continue;
+ }
+
+ /* Wait for FW to become ready */
+ if (megasas_transition_to_ready(instance)) {
+ printk(KERN_WARNING "megaraid_sas: Failed to "
+ "transition controller to ready.\n");
+ continue;
+ }
+
+ megasas_reset_reply_desc(instance);
+ if (megasas_ioc_init_fusion(instance)) {
+ printk(KERN_WARNING "megaraid_sas: "
+ "megasas_ioc_init_fusion() failed!\n");
+ continue;
+ }
+
+ instance->instancet->enable_intr(instance->reg_set);
+ instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
+
+ /* Re-fire management commands */
+ for (j = 0 ; j < instance->max_fw_cmds; j++) {
+ cmd_fusion = fusion->cmd_list[j];
+ if (cmd_fusion->sync_cmd_idx !=
+ (u32)ULONG_MAX) {
+ cmd_mfi =
+ instance->
+ cmd_list[cmd_fusion->sync_cmd_idx];
+ if (cmd_mfi->frame->dcmd.opcode ==
+ MR_DCMD_LD_MAP_GET_INFO) {
+ megasas_return_cmd(instance,
+ cmd_mfi);
+ megasas_return_cmd_fusion(
+ instance, cmd_fusion);
+ } else {
+ req_desc =
+ megasas_get_request_descriptor(
+ instance,
+ cmd_mfi->context.smid
+ -1);
+ if (!req_desc)
+ printk(KERN_WARNING
+ "req_desc NULL"
+ "\n");
+ else {
+ instance->instancet->
+ fire_cmd(instance,
+ req_desc->
+ u.low,
+ req_desc->
+ u.high,
+ instance->
+ reg_set);
+ }
+ }
+ }
+ }
+
+ /* Reset load balance info */
+ memset(fusion->load_balance_info, 0,
+ sizeof(struct LD_LOAD_BALANCE_INFO)
+ *MAX_LOGICAL_DRIVES);
+
+ if (!megasas_get_map_info(instance))
+ megasas_sync_map_info(instance);
+
+ /* Adapter reset completed successfully */
+ printk(KERN_WARNING "megaraid_sas: Reset "
+ "successful.\n");
+ retval = SUCCESS;
+ goto out;
+ }
+ /* Reset failed, kill the adapter */
+ printk(KERN_WARNING "megaraid_sas: Reset failed, killing "
+ "adapter.\n");
+ megaraid_sas_kill_hba(instance);
+ retval = FAILED;
+ } else {
+ instance->instancet->enable_intr(instance->reg_set);
+ instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
+ }
+out:
+ clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
+ mutex_unlock(&instance->reset_mutex);
+ return retval;
+}
+
+/* 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);
+}
+
+struct megasas_instance_template megasas_instance_template_fusion = {
+ .fire_cmd = megasas_fire_cmd_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,
+};
--- /dev/null
+/*
+ * Linux MegaRAID driver for SAS based RAID controllers
+ *
+ * Copyright (c) 2009-2011 LSI Corporation.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * FILE: megaraid_sas_fusion.h
+ *
+ * Authors: LSI Corporation
+ * Manoj Jose
+ * Sumant Patro
+ *
+ * Send feedback to: <megaraidlinux@lsi.com>
+ *
+ * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
+ * ATTN: Linuxraid
+ */
+
+#ifndef _MEGARAID_SAS_FUSION_H_
+#define _MEGARAID_SAS_FUSION_H_
+
+/* Fusion defines */
+#define MEGASAS_MAX_SZ_CHAIN_FRAME 1024
+#define MFI_FUSION_ENABLE_INTERRUPT_MASK (0x00000009)
+#define MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 256
+#define MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST 0xF0
+#define MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST 0xF1
+#define MEGASAS_LOAD_BALANCE_FLAG 0x1
+#define MEGASAS_DCMD_MBOX_PEND_FLAG 0x1
+#define HOST_DIAG_WRITE_ENABLE 0x80
+#define HOST_DIAG_RESET_ADAPTER 0x4
+#define MEGASAS_FUSION_MAX_RESET_TRIES 3
+
+/* T10 PI defines */
+#define MR_PROT_INFO_TYPE_CONTROLLER 0x8
+#define MEGASAS_SCSI_VARIABLE_LENGTH_CMD 0x7f
+#define MEGASAS_SCSI_SERVICE_ACTION_READ32 0x9
+#define MEGASAS_SCSI_SERVICE_ACTION_WRITE32 0xB
+#define MEGASAS_SCSI_ADDL_CDB_LEN 0x18
+#define MEGASAS_RD_WR_PROTECT_CHECK_ALL 0x20
+#define MEGASAS_RD_WR_PROTECT_CHECK_NONE 0x60
+#define MEGASAS_EEDPBLOCKSIZE 512
+
+/*
+ * Raid context flags
+ */
+
+#define MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT 0x4
+#define MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_MASK 0x30
+enum MR_RAID_FLAGS_IO_SUB_TYPE {
+ MR_RAID_FLAGS_IO_SUB_TYPE_NONE = 0,
+ MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD = 1,
+};
+
+/*
+ * Request descriptor types
+ */
+#define MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO 0x7
+#define MEGASAS_REQ_DESCRIPT_FLAGS_MFA 0x1
+
+#define MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT 1
+
+#define MEGASAS_FP_CMD_LEN 16
+#define MEGASAS_FUSION_IN_RESET 0
+
+/*
+ * Raid Context structure which describes MegaRAID specific IO Paramenters
+ * This resides at offset 0x60 where the SGL normally starts in MPT IO Frames
+ */
+
+struct RAID_CONTEXT {
+ u16 resvd0;
+ u16 timeoutValue;
+ u8 regLockFlags;
+ u8 resvd1;
+ u16 VirtualDiskTgtId;
+ u64 regLockRowLBA;
+ u32 regLockLength;
+ u16 nextLMId;
+ u8 exStatus;
+ u8 status;
+ u8 RAIDFlags;
+ u8 numSGE;
+ u16 configSeqNum;
+ u8 spanArm;
+ u8 resvd2[3];
+};
+
+#define RAID_CTX_SPANARM_ARM_SHIFT (0)
+#define RAID_CTX_SPANARM_ARM_MASK (0x1f)
+
+#define RAID_CTX_SPANARM_SPAN_SHIFT (5)
+#define RAID_CTX_SPANARM_SPAN_MASK (0xE0)
+
+/*
+ * define region lock types
+ */
+enum REGION_TYPE {
+ REGION_TYPE_UNUSED = 0,
+ REGION_TYPE_SHARED_READ = 1,
+ REGION_TYPE_SHARED_WRITE = 2,
+ REGION_TYPE_EXCLUSIVE = 3,
+};
+
+/* MPI2 defines */
+#define MPI2_FUNCTION_IOC_INIT (0x02) /* IOC Init */
+#define MPI2_WHOINIT_HOST_DRIVER (0x04)
+#define MPI2_VERSION_MAJOR (0x02)
+#define MPI2_VERSION_MINOR (0x00)
+#define MPI2_VERSION_MAJOR_MASK (0xFF00)
+#define MPI2_VERSION_MAJOR_SHIFT (8)
+#define MPI2_VERSION_MINOR_MASK (0x00FF)
+#define MPI2_VERSION_MINOR_SHIFT (0)
+#define MPI2_VERSION ((MPI2_VERSION_MAJOR << MPI2_VERSION_MAJOR_SHIFT) | \
+ MPI2_VERSION_MINOR)
+#define MPI2_HEADER_VERSION_UNIT (0x10)
+#define MPI2_HEADER_VERSION_DEV (0x00)
+#define MPI2_HEADER_VERSION_UNIT_MASK (0xFF00)
+#define MPI2_HEADER_VERSION_UNIT_SHIFT (8)
+#define MPI2_HEADER_VERSION_DEV_MASK (0x00FF)
+#define MPI2_HEADER_VERSION_DEV_SHIFT (0)
+#define MPI2_HEADER_VERSION ((MPI2_HEADER_VERSION_UNIT << 8) | \
+ MPI2_HEADER_VERSION_DEV)
+#define MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR (0x03)
+#define MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG (0x8000)
+#define MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG (0x0400)
+#define MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP (0x0003)
+#define MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG (0x0200)
+#define MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD (0x0100)
+#define MPI2_SCSIIO_EEDPFLAGS_INSERT_OP (0x0004)
+#define MPI2_FUNCTION_SCSI_IO_REQUEST (0x00) /* SCSI IO */
+#define MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY (0x06)
+#define MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO (0x00)
+#define MPI2_SGE_FLAGS_64_BIT_ADDRESSING (0x02)
+#define MPI2_SCSIIO_CONTROL_WRITE (0x01000000)
+#define MPI2_SCSIIO_CONTROL_READ (0x02000000)
+#define MPI2_REQ_DESCRIPT_FLAGS_TYPE_MASK (0x0E)
+#define MPI2_RPY_DESCRIPT_FLAGS_UNUSED (0x0F)
+#define MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS (0x00)
+#define MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK (0x0F)
+#define MPI2_WRSEQ_FLUSH_KEY_VALUE (0x0)
+#define MPI2_WRITE_SEQUENCE_OFFSET (0x00000004)
+#define MPI2_WRSEQ_1ST_KEY_VALUE (0xF)
+#define MPI2_WRSEQ_2ND_KEY_VALUE (0x4)
+#define MPI2_WRSEQ_3RD_KEY_VALUE (0xB)
+#define MPI2_WRSEQ_4TH_KEY_VALUE (0x2)
+#define MPI2_WRSEQ_5TH_KEY_VALUE (0x7)
+#define MPI2_WRSEQ_6TH_KEY_VALUE (0xD)
+
+struct MPI25_IEEE_SGE_CHAIN64 {
+ u64 Address;
+ u32 Length;
+ u16 Reserved1;
+ u8 NextChainOffset;
+ u8 Flags;
+};
+
+struct MPI2_SGE_SIMPLE_UNION {
+ u32 FlagsLength;
+ union {
+ u32 Address32;
+ u64 Address64;
+ } u;
+};
+
+struct MPI2_SCSI_IO_CDB_EEDP32 {
+ u8 CDB[20]; /* 0x00 */
+ u32 PrimaryReferenceTag; /* 0x14 */
+ u16 PrimaryApplicationTag; /* 0x18 */
+ u16 PrimaryApplicationTagMask; /* 0x1A */
+ u32 TransferLength; /* 0x1C */
+};
+
+struct MPI2_SGE_CHAIN_UNION {
+ u16 Length;
+ u8 NextChainOffset;
+ u8 Flags;
+ union {
+ u32 Address32;
+ u64 Address64;
+ } u;
+};
+
+struct MPI2_IEEE_SGE_SIMPLE32 {
+ u32 Address;
+ u32 FlagsLength;
+};
+
+struct MPI2_IEEE_SGE_CHAIN32 {
+ u32 Address;
+ u32 FlagsLength;
+};
+
+struct MPI2_IEEE_SGE_SIMPLE64 {
+ u64 Address;
+ u32 Length;
+ u16 Reserved1;
+ u8 Reserved2;
+ u8 Flags;
+};
+
+struct MPI2_IEEE_SGE_CHAIN64 {
+ u64 Address;
+ u32 Length;
+ u16 Reserved1;
+ u8 Reserved2;
+ u8 Flags;
+};
+
+union MPI2_IEEE_SGE_SIMPLE_UNION {
+ struct MPI2_IEEE_SGE_SIMPLE32 Simple32;
+ struct MPI2_IEEE_SGE_SIMPLE64 Simple64;
+};
+
+union MPI2_IEEE_SGE_CHAIN_UNION {
+ struct MPI2_IEEE_SGE_CHAIN32 Chain32;
+ struct MPI2_IEEE_SGE_CHAIN64 Chain64;
+};
+
+union MPI2_SGE_IO_UNION {
+ struct MPI2_SGE_SIMPLE_UNION MpiSimple;
+ struct MPI2_SGE_CHAIN_UNION MpiChain;
+ union MPI2_IEEE_SGE_SIMPLE_UNION IeeeSimple;
+ union MPI2_IEEE_SGE_CHAIN_UNION IeeeChain;
+};
+
+union MPI2_SCSI_IO_CDB_UNION {
+ u8 CDB32[32];
+ struct MPI2_SCSI_IO_CDB_EEDP32 EEDP32;
+ struct MPI2_SGE_SIMPLE_UNION SGE;
+};
+
+/*
+ * RAID SCSI IO Request Message
+ * Total SGE count will be one less than _MPI2_SCSI_IO_REQUEST
+ */
+struct MPI2_RAID_SCSI_IO_REQUEST {
+ u16 DevHandle; /* 0x00 */
+ u8 ChainOffset; /* 0x02 */
+ u8 Function; /* 0x03 */
+ u16 Reserved1; /* 0x04 */
+ u8 Reserved2; /* 0x06 */
+ u8 MsgFlags; /* 0x07 */
+ u8 VP_ID; /* 0x08 */
+ u8 VF_ID; /* 0x09 */
+ u16 Reserved3; /* 0x0A */
+ u32 SenseBufferLowAddress; /* 0x0C */
+ u16 SGLFlags; /* 0x10 */
+ u8 SenseBufferLength; /* 0x12 */
+ u8 Reserved4; /* 0x13 */
+ u8 SGLOffset0; /* 0x14 */
+ u8 SGLOffset1; /* 0x15 */
+ u8 SGLOffset2; /* 0x16 */
+ u8 SGLOffset3; /* 0x17 */
+ u32 SkipCount; /* 0x18 */
+ u32 DataLength; /* 0x1C */
+ u32 BidirectionalDataLength; /* 0x20 */
+ u16 IoFlags; /* 0x24 */
+ u16 EEDPFlags; /* 0x26 */
+ u32 EEDPBlockSize; /* 0x28 */
+ u32 SecondaryReferenceTag; /* 0x2C */
+ u16 SecondaryApplicationTag; /* 0x30 */
+ u16 ApplicationTagTranslationMask; /* 0x32 */
+ u8 LUN[8]; /* 0x34 */
+ u32 Control; /* 0x3C */
+ union MPI2_SCSI_IO_CDB_UNION CDB; /* 0x40 */
+ struct RAID_CONTEXT RaidContext; /* 0x60 */
+ union MPI2_SGE_IO_UNION SGL; /* 0x80 */
+};
+
+/*
+ * MPT RAID MFA IO Descriptor.
+ */
+struct MEGASAS_RAID_MFA_IO_REQUEST_DESCRIPTOR {
+ u32 RequestFlags:8;
+ u32 MessageAddress1:24; /* bits 31:8*/
+ u32 MessageAddress2; /* bits 61:32 */
+};
+
+/* Default Request Descriptor */
+struct MPI2_DEFAULT_REQUEST_DESCRIPTOR {
+ u8 RequestFlags; /* 0x00 */
+ u8 MSIxIndex; /* 0x01 */
+ u16 SMID; /* 0x02 */
+ u16 LMID; /* 0x04 */
+ u16 DescriptorTypeDependent; /* 0x06 */
+};
+
+/* High Priority Request Descriptor */
+struct MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR {
+ u8 RequestFlags; /* 0x00 */
+ u8 MSIxIndex; /* 0x01 */
+ u16 SMID; /* 0x02 */
+ u16 LMID; /* 0x04 */
+ u16 Reserved1; /* 0x06 */
+};
+
+/* SCSI IO Request Descriptor */
+struct MPI2_SCSI_IO_REQUEST_DESCRIPTOR {
+ u8 RequestFlags; /* 0x00 */
+ u8 MSIxIndex; /* 0x01 */
+ u16 SMID; /* 0x02 */
+ u16 LMID; /* 0x04 */
+ u16 DevHandle; /* 0x06 */
+};
+
+/* SCSI Target Request Descriptor */
+struct MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR {
+ u8 RequestFlags; /* 0x00 */
+ u8 MSIxIndex; /* 0x01 */
+ u16 SMID; /* 0x02 */
+ u16 LMID; /* 0x04 */
+ u16 IoIndex; /* 0x06 */
+};
+
+/* RAID Accelerator Request Descriptor */
+struct MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR {
+ u8 RequestFlags; /* 0x00 */
+ u8 MSIxIndex; /* 0x01 */
+ u16 SMID; /* 0x02 */
+ u16 LMID; /* 0x04 */
+ u16 Reserved; /* 0x06 */
+};
+
+/* union of Request Descriptors */
+union MEGASAS_REQUEST_DESCRIPTOR_UNION {
+ struct MPI2_DEFAULT_REQUEST_DESCRIPTOR Default;
+ struct MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR HighPriority;
+ struct MPI2_SCSI_IO_REQUEST_DESCRIPTOR SCSIIO;
+ struct MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR SCSITarget;
+ struct MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR RAIDAccelerator;
+ struct MEGASAS_RAID_MFA_IO_REQUEST_DESCRIPTOR MFAIo;
+ union {
+ struct {
+ u32 low;
+ u32 high;
+ } u;
+ u64 Words;
+ };
+};
+
+/* Default Reply Descriptor */
+struct MPI2_DEFAULT_REPLY_DESCRIPTOR {
+ u8 ReplyFlags; /* 0x00 */
+ u8 MSIxIndex; /* 0x01 */
+ u16 DescriptorTypeDependent1; /* 0x02 */
+ u32 DescriptorTypeDependent2; /* 0x04 */
+};
+
+/* Address Reply Descriptor */
+struct MPI2_ADDRESS_REPLY_DESCRIPTOR {
+ u8 ReplyFlags; /* 0x00 */
+ u8 MSIxIndex; /* 0x01 */
+ u16 SMID; /* 0x02 */
+ u32 ReplyFrameAddress; /* 0x04 */
+};
+
+/* SCSI IO Success Reply Descriptor */
+struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR {
+ u8 ReplyFlags; /* 0x00 */
+ u8 MSIxIndex; /* 0x01 */
+ u16 SMID; /* 0x02 */
+ u16 TaskTag; /* 0x04 */
+ u16 Reserved1; /* 0x06 */
+};
+
+/* TargetAssist Success Reply Descriptor */
+struct MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR {
+ u8 ReplyFlags; /* 0x00 */
+ u8 MSIxIndex; /* 0x01 */
+ u16 SMID; /* 0x02 */
+ u8 SequenceNumber; /* 0x04 */
+ u8 Reserved1; /* 0x05 */
+ u16 IoIndex; /* 0x06 */
+};
+
+/* Target Command Buffer Reply Descriptor */
+struct MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR {
+ u8 ReplyFlags; /* 0x00 */
+ u8 MSIxIndex; /* 0x01 */
+ u8 VP_ID; /* 0x02 */
+ u8 Flags; /* 0x03 */
+ u16 InitiatorDevHandle; /* 0x04 */
+ u16 IoIndex; /* 0x06 */
+};
+
+/* RAID Accelerator Success Reply Descriptor */
+struct MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR {
+ u8 ReplyFlags; /* 0x00 */
+ u8 MSIxIndex; /* 0x01 */
+ u16 SMID; /* 0x02 */
+ u32 Reserved; /* 0x04 */
+};
+
+/* union of Reply Descriptors */
+union MPI2_REPLY_DESCRIPTORS_UNION {
+ struct MPI2_DEFAULT_REPLY_DESCRIPTOR Default;
+ struct MPI2_ADDRESS_REPLY_DESCRIPTOR AddressReply;
+ struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR SCSIIOSuccess;
+ struct MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR TargetAssistSuccess;
+ struct MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR TargetCommandBuffer;
+ struct MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR
+ RAIDAcceleratorSuccess;
+ u64 Words;
+};
+
+/* IOCInit Request message */
+struct MPI2_IOC_INIT_REQUEST {
+ u8 WhoInit; /* 0x00 */
+ u8 Reserved1; /* 0x01 */
+ u8 ChainOffset; /* 0x02 */
+ u8 Function; /* 0x03 */
+ u16 Reserved2; /* 0x04 */
+ u8 Reserved3; /* 0x06 */
+ u8 MsgFlags; /* 0x07 */
+ u8 VP_ID; /* 0x08 */
+ u8 VF_ID; /* 0x09 */
+ u16 Reserved4; /* 0x0A */
+ u16 MsgVersion; /* 0x0C */
+ u16 HeaderVersion; /* 0x0E */
+ u32 Reserved5; /* 0x10 */
+ u16 Reserved6; /* 0x14 */
+ u8 Reserved7; /* 0x16 */
+ u8 HostMSIxVectors; /* 0x17 */
+ u16 Reserved8; /* 0x18 */
+ u16 SystemRequestFrameSize; /* 0x1A */
+ u16 ReplyDescriptorPostQueueDepth; /* 0x1C */
+ u16 ReplyFreeQueueDepth; /* 0x1E */
+ u32 SenseBufferAddressHigh; /* 0x20 */
+ u32 SystemReplyAddressHigh; /* 0x24 */
+ u64 SystemRequestFrameBaseAddress; /* 0x28 */
+ u64 ReplyDescriptorPostQueueAddress;/* 0x30 */
+ u64 ReplyFreeQueueAddress; /* 0x38 */
+ u64 TimeStamp; /* 0x40 */
+};
+
+/* mrpriv defines */
+#define MR_PD_INVALID 0xFFFF
+#define MAX_SPAN_DEPTH 8
+#define MAX_RAIDMAP_SPAN_DEPTH (MAX_SPAN_DEPTH)
+#define MAX_ROW_SIZE 32
+#define MAX_RAIDMAP_ROW_SIZE (MAX_ROW_SIZE)
+#define MAX_LOGICAL_DRIVES 64
+#define MAX_RAIDMAP_LOGICAL_DRIVES (MAX_LOGICAL_DRIVES)
+#define MAX_RAIDMAP_VIEWS (MAX_LOGICAL_DRIVES)
+#define MAX_ARRAYS 128
+#define MAX_RAIDMAP_ARRAYS (MAX_ARRAYS)
+#define MAX_PHYSICAL_DEVICES 256
+#define MAX_RAIDMAP_PHYSICAL_DEVICES (MAX_PHYSICAL_DEVICES)
+#define MR_DCMD_LD_MAP_GET_INFO 0x0300e101
+
+struct MR_DEV_HANDLE_INFO {
+ u16 curDevHdl;
+ u8 validHandles;
+ u8 reserved;
+ u16 devHandle[2];
+};
+
+struct MR_ARRAY_INFO {
+ u16 pd[MAX_RAIDMAP_ROW_SIZE];
+};
+
+struct MR_QUAD_ELEMENT {
+ u64 logStart;
+ u64 logEnd;
+ u64 offsetInSpan;
+ u32 diff;
+ u32 reserved1;
+};
+
+struct MR_SPAN_INFO {
+ u32 noElements;
+ u32 reserved1;
+ struct MR_QUAD_ELEMENT quad[MAX_RAIDMAP_SPAN_DEPTH];
+};
+
+struct MR_LD_SPAN {
+ u64 startBlk;
+ u64 numBlks;
+ u16 arrayRef;
+ u8 reserved[6];
+};
+
+struct MR_SPAN_BLOCK_INFO {
+ u64 num_rows;
+ struct MR_LD_SPAN span;
+ struct MR_SPAN_INFO block_span_info;
+};
+
+struct MR_LD_RAID {
+ struct {
+ u32 fpCapable:1;
+ u32 reserved5:3;
+ u32 ldPiMode:4;
+ u32 pdPiMode:4;
+ u32 encryptionType:8;
+ u32 fpWriteCapable:1;
+ u32 fpReadCapable:1;
+ u32 fpWriteAcrossStripe:1;
+ u32 fpReadAcrossStripe:1;
+ u32 reserved4:8;
+ } capability;
+ u32 reserved6;
+ u64 size;
+ u8 spanDepth;
+ u8 level;
+ u8 stripeShift;
+ u8 rowSize;
+ u8 rowDataSize;
+ u8 writeMode;
+ u8 PRL;
+ u8 SRL;
+ u16 targetId;
+ u8 ldState;
+ u8 regTypeReqOnWrite;
+ u8 modFactor;
+ u8 reserved2[1];
+ u16 seqNum;
+
+ struct {
+ u32 ldSyncRequired:1;
+ u32 reserved:31;
+ } flags;
+
+ u8 reserved3[0x5C];
+};
+
+struct MR_LD_SPAN_MAP {
+ struct MR_LD_RAID ldRaid;
+ u8 dataArmMap[MAX_RAIDMAP_ROW_SIZE];
+ struct MR_SPAN_BLOCK_INFO spanBlock[MAX_RAIDMAP_SPAN_DEPTH];
+};
+
+struct MR_FW_RAID_MAP {
+ u32 totalSize;
+ union {
+ struct {
+ u32 maxLd;
+ u32 maxSpanDepth;
+ u32 maxRowSize;
+ u32 maxPdCount;
+ u32 maxArrays;
+ } validationInfo;
+ u32 version[5];
+ u32 reserved1[5];
+ };
+
+ u32 ldCount;
+ u32 Reserved1;
+ u8 ldTgtIdToLd[MAX_RAIDMAP_LOGICAL_DRIVES+
+ MAX_RAIDMAP_VIEWS];
+ u8 fpPdIoTimeoutSec;
+ u8 reserved2[7];
+ struct MR_ARRAY_INFO arMapInfo[MAX_RAIDMAP_ARRAYS];
+ struct MR_DEV_HANDLE_INFO devHndlInfo[MAX_RAIDMAP_PHYSICAL_DEVICES];
+ struct MR_LD_SPAN_MAP ldSpanMap[1];
+};
+
+struct IO_REQUEST_INFO {
+ u64 ldStartBlock;
+ u32 numBlocks;
+ u16 ldTgtId;
+ u8 isRead;
+ u16 devHandle;
+ u64 pdBlock;
+ u8 fpOkForIo;
+};
+
+struct MR_LD_TARGET_SYNC {
+ u8 targetId;
+ u8 reserved;
+ u16 seqNum;
+};
+
+#define IEEE_SGE_FLAGS_ADDR_MASK (0x03)
+#define IEEE_SGE_FLAGS_SYSTEM_ADDR (0x00)
+#define IEEE_SGE_FLAGS_IOCDDR_ADDR (0x01)
+#define IEEE_SGE_FLAGS_IOCPLB_ADDR (0x02)
+#define IEEE_SGE_FLAGS_IOCPLBNTA_ADDR (0x03)
+#define IEEE_SGE_FLAGS_CHAIN_ELEMENT (0x80)
+#define IEEE_SGE_FLAGS_END_OF_LIST (0x40)
+
+struct megasas_register_set;
+struct megasas_instance;
+
+union desc_word {
+ u64 word;
+ struct {
+ u32 low;
+ u32 high;
+ } u;
+};
+
+struct megasas_cmd_fusion {
+ struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
+ dma_addr_t io_request_phys_addr;
+
+ union MPI2_SGE_IO_UNION *sg_frame;
+ dma_addr_t sg_frame_phys_addr;
+
+ u8 *sense;
+ dma_addr_t sense_phys_addr;
+
+ struct list_head list;
+ struct scsi_cmnd *scmd;
+ struct megasas_instance *instance;
+
+ u8 retry_for_fw_reset;
+ union MEGASAS_REQUEST_DESCRIPTOR_UNION *request_desc;
+
+ /*
+ * Context for a MFI frame.
+ * Used to get the mfi cmd from list when a MFI cmd is completed
+ */
+ u32 sync_cmd_idx;
+ u32 index;
+ u8 flags;
+};
+
+struct LD_LOAD_BALANCE_INFO {
+ u8 loadBalanceFlag;
+ u8 reserved1;
+ u16 raid1DevHandle[2];
+ atomic_t scsi_pending_cmds[2];
+ u64 last_accessed_block[2];
+};
+
+struct MR_FW_RAID_MAP_ALL {
+ struct MR_FW_RAID_MAP raidMap;
+ struct MR_LD_SPAN_MAP ldSpanMap[MAX_LOGICAL_DRIVES - 1];
+} __attribute__ ((packed));
+
+struct fusion_context {
+ struct megasas_cmd_fusion **cmd_list;
+ struct list_head cmd_pool;
+
+ spinlock_t cmd_pool_lock;
+
+ dma_addr_t req_frames_desc_phys;
+ u8 *req_frames_desc;
+
+ struct dma_pool *io_request_frames_pool;
+ dma_addr_t io_request_frames_phys;
+ u8 *io_request_frames;
+
+ struct dma_pool *sg_dma_pool;
+ struct dma_pool *sense_dma_pool;
+
+ dma_addr_t reply_frames_desc_phys;
+ union MPI2_REPLY_DESCRIPTORS_UNION *reply_frames_desc;
+ struct dma_pool *reply_frames_desc_pool;
+
+ u16 last_reply_idx;
+
+ u32 reply_q_depth;
+ u32 request_alloc_sz;
+ u32 reply_alloc_sz;
+ u32 io_frames_alloc_sz;
+
+ u16 max_sge_in_main_msg;
+ u16 max_sge_in_chain;
+
+ u8 chain_offset_io_request;
+ u8 chain_offset_mfi_pthru;
+
+ struct MR_FW_RAID_MAP_ALL *ld_map[2];
+ dma_addr_t ld_map_phys[2];
+
+ u32 map_sz;
+ u8 fast_path_io;
+ struct LD_LOAD_BALANCE_INFO load_balance_info[MAX_LOGICAL_DRIVES];
+};
+
+union desc_value {
+ u64 word;
+ struct {
+ u32 low;
+ u32 high;
+ } u;
+};
+
+#endif /* _MEGARAID_SAS_FUSION_H_ */
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