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mvumi.c
2632 lines (2284 loc) · 68.4 KB
/
mvumi.c
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Marvell UMI driver
*
* Copyright 2011 Marvell. <jyli@marvell.com>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/pci.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/ktime.h>
#include <linux/blkdev.h>
#include <linux/io.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_eh.h>
#include <linux/uaccess.h>
#include <linux/kthread.h>
#include "mvumi.h"
MODULE_LICENSE("GPL");
MODULE_AUTHOR("jyli@marvell.com");
MODULE_DESCRIPTION("Marvell UMI Driver");
static const struct pci_device_id mvumi_pci_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, PCI_DEVICE_ID_MARVELL_MV9143) },
{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, PCI_DEVICE_ID_MARVELL_MV9580) },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, mvumi_pci_table);
static void tag_init(struct mvumi_tag *st, unsigned short size)
{
unsigned short i;
BUG_ON(size != st->size);
st->top = size;
for (i = 0; i < size; i++)
st->stack[i] = size - 1 - i;
}
static unsigned short tag_get_one(struct mvumi_hba *mhba, struct mvumi_tag *st)
{
BUG_ON(st->top <= 0);
return st->stack[--st->top];
}
static void tag_release_one(struct mvumi_hba *mhba, struct mvumi_tag *st,
unsigned short tag)
{
BUG_ON(st->top >= st->size);
st->stack[st->top++] = tag;
}
static bool tag_is_empty(struct mvumi_tag *st)
{
if (st->top == 0)
return true;
else
return false;
}
static void mvumi_unmap_pci_addr(struct pci_dev *dev, void **addr_array)
{
int i;
for (i = 0; i < MAX_BASE_ADDRESS; i++)
if ((pci_resource_flags(dev, i) & IORESOURCE_MEM) &&
addr_array[i])
pci_iounmap(dev, addr_array[i]);
}
static int mvumi_map_pci_addr(struct pci_dev *dev, void **addr_array)
{
int i;
for (i = 0; i < MAX_BASE_ADDRESS; i++) {
if (pci_resource_flags(dev, i) & IORESOURCE_MEM) {
addr_array[i] = pci_iomap(dev, i, 0);
if (!addr_array[i]) {
dev_err(&dev->dev, "failed to map Bar[%d]\n",
i);
mvumi_unmap_pci_addr(dev, addr_array);
return -ENOMEM;
}
} else
addr_array[i] = NULL;
dev_dbg(&dev->dev, "Bar %d : %p.\n", i, addr_array[i]);
}
return 0;
}
static struct mvumi_res *mvumi_alloc_mem_resource(struct mvumi_hba *mhba,
enum resource_type type, unsigned int size)
{
struct mvumi_res *res = kzalloc(sizeof(*res), GFP_ATOMIC);
if (!res) {
dev_err(&mhba->pdev->dev,
"Failed to allocate memory for resource manager.\n");
return NULL;
}
switch (type) {
case RESOURCE_CACHED_MEMORY:
res->virt_addr = kzalloc(size, GFP_ATOMIC);
if (!res->virt_addr) {
dev_err(&mhba->pdev->dev,
"unable to allocate memory,size = %d.\n", size);
kfree(res);
return NULL;
}
break;
case RESOURCE_UNCACHED_MEMORY:
size = round_up(size, 8);
res->virt_addr = dma_alloc_coherent(&mhba->pdev->dev, size,
&res->bus_addr,
GFP_KERNEL);
if (!res->virt_addr) {
dev_err(&mhba->pdev->dev,
"unable to allocate consistent mem,"
"size = %d.\n", size);
kfree(res);
return NULL;
}
break;
default:
dev_err(&mhba->pdev->dev, "unknown resource type %d.\n", type);
kfree(res);
return NULL;
}
res->type = type;
res->size = size;
INIT_LIST_HEAD(&res->entry);
list_add_tail(&res->entry, &mhba->res_list);
return res;
}
static void mvumi_release_mem_resource(struct mvumi_hba *mhba)
{
struct mvumi_res *res, *tmp;
list_for_each_entry_safe(res, tmp, &mhba->res_list, entry) {
switch (res->type) {
case RESOURCE_UNCACHED_MEMORY:
dma_free_coherent(&mhba->pdev->dev, res->size,
res->virt_addr, res->bus_addr);
break;
case RESOURCE_CACHED_MEMORY:
kfree(res->virt_addr);
break;
default:
dev_err(&mhba->pdev->dev,
"unknown resource type %d\n", res->type);
break;
}
list_del(&res->entry);
kfree(res);
}
mhba->fw_flag &= ~MVUMI_FW_ALLOC;
}
/**
* mvumi_make_sgl - Prepares SGL
* @mhba: Adapter soft state
* @scmd: SCSI command from the mid-layer
* @sgl_p: SGL to be filled in
* @sg_count: return the number of SG elements
*
* If successful, this function returns 0. otherwise, it returns -1.
*/
static int mvumi_make_sgl(struct mvumi_hba *mhba, struct scsi_cmnd *scmd,
void *sgl_p, unsigned char *sg_count)
{
struct scatterlist *sg;
struct mvumi_sgl *m_sg = (struct mvumi_sgl *) sgl_p;
unsigned int i;
unsigned int sgnum = scsi_sg_count(scmd);
dma_addr_t busaddr;
*sg_count = dma_map_sg(&mhba->pdev->dev, scsi_sglist(scmd), sgnum,
scmd->sc_data_direction);
if (*sg_count > mhba->max_sge) {
dev_err(&mhba->pdev->dev,
"sg count[0x%x] is bigger than max sg[0x%x].\n",
*sg_count, mhba->max_sge);
dma_unmap_sg(&mhba->pdev->dev, scsi_sglist(scmd), sgnum,
scmd->sc_data_direction);
return -1;
}
scsi_for_each_sg(scmd, sg, *sg_count, i) {
busaddr = sg_dma_address(sg);
m_sg->baseaddr_l = cpu_to_le32(lower_32_bits(busaddr));
m_sg->baseaddr_h = cpu_to_le32(upper_32_bits(busaddr));
m_sg->flags = 0;
sgd_setsz(mhba, m_sg, cpu_to_le32(sg_dma_len(sg)));
if ((i + 1) == *sg_count)
m_sg->flags |= 1U << mhba->eot_flag;
sgd_inc(mhba, m_sg);
}
return 0;
}
static int mvumi_internal_cmd_sgl(struct mvumi_hba *mhba, struct mvumi_cmd *cmd,
unsigned int size)
{
struct mvumi_sgl *m_sg;
void *virt_addr;
dma_addr_t phy_addr;
if (size == 0)
return 0;
virt_addr = dma_alloc_coherent(&mhba->pdev->dev, size, &phy_addr,
GFP_KERNEL);
if (!virt_addr)
return -1;
m_sg = (struct mvumi_sgl *) &cmd->frame->payload[0];
cmd->frame->sg_counts = 1;
cmd->data_buf = virt_addr;
m_sg->baseaddr_l = cpu_to_le32(lower_32_bits(phy_addr));
m_sg->baseaddr_h = cpu_to_le32(upper_32_bits(phy_addr));
m_sg->flags = 1U << mhba->eot_flag;
sgd_setsz(mhba, m_sg, cpu_to_le32(size));
return 0;
}
static struct mvumi_cmd *mvumi_create_internal_cmd(struct mvumi_hba *mhba,
unsigned int buf_size)
{
struct mvumi_cmd *cmd;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd) {
dev_err(&mhba->pdev->dev, "failed to create a internal cmd\n");
return NULL;
}
INIT_LIST_HEAD(&cmd->queue_pointer);
cmd->frame = dma_alloc_coherent(&mhba->pdev->dev, mhba->ib_max_size,
&cmd->frame_phys, GFP_KERNEL);
if (!cmd->frame) {
dev_err(&mhba->pdev->dev, "failed to allocate memory for FW"
" frame,size = %d.\n", mhba->ib_max_size);
kfree(cmd);
return NULL;
}
if (buf_size) {
if (mvumi_internal_cmd_sgl(mhba, cmd, buf_size)) {
dev_err(&mhba->pdev->dev, "failed to allocate memory"
" for internal frame\n");
dma_free_coherent(&mhba->pdev->dev, mhba->ib_max_size,
cmd->frame, cmd->frame_phys);
kfree(cmd);
return NULL;
}
} else
cmd->frame->sg_counts = 0;
return cmd;
}
static void mvumi_delete_internal_cmd(struct mvumi_hba *mhba,
struct mvumi_cmd *cmd)
{
struct mvumi_sgl *m_sg;
unsigned int size;
dma_addr_t phy_addr;
if (cmd && cmd->frame) {
if (cmd->frame->sg_counts) {
m_sg = (struct mvumi_sgl *) &cmd->frame->payload[0];
sgd_getsz(mhba, m_sg, size);
phy_addr = (dma_addr_t) m_sg->baseaddr_l |
(dma_addr_t) ((m_sg->baseaddr_h << 16) << 16);
dma_free_coherent(&mhba->pdev->dev, size, cmd->data_buf,
phy_addr);
}
dma_free_coherent(&mhba->pdev->dev, mhba->ib_max_size,
cmd->frame, cmd->frame_phys);
kfree(cmd);
}
}
/**
* mvumi_get_cmd - Get a command from the free pool
* @mhba: Adapter soft state
*
* Returns a free command from the pool
*/
static struct mvumi_cmd *mvumi_get_cmd(struct mvumi_hba *mhba)
{
struct mvumi_cmd *cmd = NULL;
if (likely(!list_empty(&mhba->cmd_pool))) {
cmd = list_entry((&mhba->cmd_pool)->next,
struct mvumi_cmd, queue_pointer);
list_del_init(&cmd->queue_pointer);
} else
dev_warn(&mhba->pdev->dev, "command pool is empty!\n");
return cmd;
}
/**
* mvumi_return_cmd - Return a cmd to free command pool
* @mhba: Adapter soft state
* @cmd: Command packet to be returned to free command pool
*/
static inline void mvumi_return_cmd(struct mvumi_hba *mhba,
struct mvumi_cmd *cmd)
{
cmd->scmd = NULL;
list_add_tail(&cmd->queue_pointer, &mhba->cmd_pool);
}
/**
* mvumi_free_cmds - Free all the cmds in the free cmd pool
* @mhba: Adapter soft state
*/
static void mvumi_free_cmds(struct mvumi_hba *mhba)
{
struct mvumi_cmd *cmd;
while (!list_empty(&mhba->cmd_pool)) {
cmd = list_first_entry(&mhba->cmd_pool, struct mvumi_cmd,
queue_pointer);
list_del(&cmd->queue_pointer);
if (!(mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC))
kfree(cmd->frame);
kfree(cmd);
}
}
/**
* mvumi_alloc_cmds - Allocates the command packets
* @mhba: Adapter soft state
*
*/
static int mvumi_alloc_cmds(struct mvumi_hba *mhba)
{
int i;
struct mvumi_cmd *cmd;
for (i = 0; i < mhba->max_io; i++) {
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd)
goto err_exit;
INIT_LIST_HEAD(&cmd->queue_pointer);
list_add_tail(&cmd->queue_pointer, &mhba->cmd_pool);
if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC) {
cmd->frame = mhba->ib_frame + i * mhba->ib_max_size;
cmd->frame_phys = mhba->ib_frame_phys
+ i * mhba->ib_max_size;
} else
cmd->frame = kzalloc(mhba->ib_max_size, GFP_KERNEL);
if (!cmd->frame)
goto err_exit;
}
return 0;
err_exit:
dev_err(&mhba->pdev->dev,
"failed to allocate memory for cmd[0x%x].\n", i);
while (!list_empty(&mhba->cmd_pool)) {
cmd = list_first_entry(&mhba->cmd_pool, struct mvumi_cmd,
queue_pointer);
list_del(&cmd->queue_pointer);
if (!(mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC))
kfree(cmd->frame);
kfree(cmd);
}
return -ENOMEM;
}
static unsigned int mvumi_check_ib_list_9143(struct mvumi_hba *mhba)
{
unsigned int ib_rp_reg;
struct mvumi_hw_regs *regs = mhba->regs;
ib_rp_reg = ioread32(mhba->regs->inb_read_pointer);
if (unlikely(((ib_rp_reg & regs->cl_slot_num_mask) ==
(mhba->ib_cur_slot & regs->cl_slot_num_mask)) &&
((ib_rp_reg & regs->cl_pointer_toggle)
!= (mhba->ib_cur_slot & regs->cl_pointer_toggle)))) {
dev_warn(&mhba->pdev->dev, "no free slot to use.\n");
return 0;
}
if (atomic_read(&mhba->fw_outstanding) >= mhba->max_io) {
dev_warn(&mhba->pdev->dev, "firmware io overflow.\n");
return 0;
} else {
return mhba->max_io - atomic_read(&mhba->fw_outstanding);
}
}
static unsigned int mvumi_check_ib_list_9580(struct mvumi_hba *mhba)
{
unsigned int count;
if (atomic_read(&mhba->fw_outstanding) >= (mhba->max_io - 1))
return 0;
count = ioread32(mhba->ib_shadow);
if (count == 0xffff)
return 0;
return count;
}
static void mvumi_get_ib_list_entry(struct mvumi_hba *mhba, void **ib_entry)
{
unsigned int cur_ib_entry;
cur_ib_entry = mhba->ib_cur_slot & mhba->regs->cl_slot_num_mask;
cur_ib_entry++;
if (cur_ib_entry >= mhba->list_num_io) {
cur_ib_entry -= mhba->list_num_io;
mhba->ib_cur_slot ^= mhba->regs->cl_pointer_toggle;
}
mhba->ib_cur_slot &= ~mhba->regs->cl_slot_num_mask;
mhba->ib_cur_slot |= (cur_ib_entry & mhba->regs->cl_slot_num_mask);
if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC) {
*ib_entry = mhba->ib_list + cur_ib_entry *
sizeof(struct mvumi_dyn_list_entry);
} else {
*ib_entry = mhba->ib_list + cur_ib_entry * mhba->ib_max_size;
}
atomic_inc(&mhba->fw_outstanding);
}
static void mvumi_send_ib_list_entry(struct mvumi_hba *mhba)
{
iowrite32(0xffff, mhba->ib_shadow);
iowrite32(mhba->ib_cur_slot, mhba->regs->inb_write_pointer);
}
static char mvumi_check_ob_frame(struct mvumi_hba *mhba,
unsigned int cur_obf, struct mvumi_rsp_frame *p_outb_frame)
{
unsigned short tag, request_id;
udelay(1);
p_outb_frame = mhba->ob_list + cur_obf * mhba->ob_max_size;
request_id = p_outb_frame->request_id;
tag = p_outb_frame->tag;
if (tag > mhba->tag_pool.size) {
dev_err(&mhba->pdev->dev, "ob frame data error\n");
return -1;
}
if (mhba->tag_cmd[tag] == NULL) {
dev_err(&mhba->pdev->dev, "tag[0x%x] with NO command\n", tag);
return -1;
} else if (mhba->tag_cmd[tag]->request_id != request_id &&
mhba->request_id_enabled) {
dev_err(&mhba->pdev->dev, "request ID from FW:0x%x,"
"cmd request ID:0x%x\n", request_id,
mhba->tag_cmd[tag]->request_id);
return -1;
}
return 0;
}
static int mvumi_check_ob_list_9143(struct mvumi_hba *mhba,
unsigned int *cur_obf, unsigned int *assign_obf_end)
{
unsigned int ob_write, ob_write_shadow;
struct mvumi_hw_regs *regs = mhba->regs;
do {
ob_write = ioread32(regs->outb_copy_pointer);
ob_write_shadow = ioread32(mhba->ob_shadow);
} while ((ob_write & regs->cl_slot_num_mask) != ob_write_shadow);
*cur_obf = mhba->ob_cur_slot & mhba->regs->cl_slot_num_mask;
*assign_obf_end = ob_write & mhba->regs->cl_slot_num_mask;
if ((ob_write & regs->cl_pointer_toggle) !=
(mhba->ob_cur_slot & regs->cl_pointer_toggle)) {
*assign_obf_end += mhba->list_num_io;
}
return 0;
}
static int mvumi_check_ob_list_9580(struct mvumi_hba *mhba,
unsigned int *cur_obf, unsigned int *assign_obf_end)
{
unsigned int ob_write;
struct mvumi_hw_regs *regs = mhba->regs;
ob_write = ioread32(regs->outb_read_pointer);
ob_write = ioread32(regs->outb_copy_pointer);
*cur_obf = mhba->ob_cur_slot & mhba->regs->cl_slot_num_mask;
*assign_obf_end = ob_write & mhba->regs->cl_slot_num_mask;
if (*assign_obf_end < *cur_obf)
*assign_obf_end += mhba->list_num_io;
else if (*assign_obf_end == *cur_obf)
return -1;
return 0;
}
static void mvumi_receive_ob_list_entry(struct mvumi_hba *mhba)
{
unsigned int cur_obf, assign_obf_end, i;
struct mvumi_ob_data *ob_data;
struct mvumi_rsp_frame *p_outb_frame;
struct mvumi_hw_regs *regs = mhba->regs;
if (mhba->instancet->check_ob_list(mhba, &cur_obf, &assign_obf_end))
return;
for (i = (assign_obf_end - cur_obf); i != 0; i--) {
cur_obf++;
if (cur_obf >= mhba->list_num_io) {
cur_obf -= mhba->list_num_io;
mhba->ob_cur_slot ^= regs->cl_pointer_toggle;
}
p_outb_frame = mhba->ob_list + cur_obf * mhba->ob_max_size;
/* Copy pointer may point to entry in outbound list
* before entry has valid data
*/
if (unlikely(p_outb_frame->tag > mhba->tag_pool.size ||
mhba->tag_cmd[p_outb_frame->tag] == NULL ||
p_outb_frame->request_id !=
mhba->tag_cmd[p_outb_frame->tag]->request_id))
if (mvumi_check_ob_frame(mhba, cur_obf, p_outb_frame))
continue;
if (!list_empty(&mhba->ob_data_list)) {
ob_data = (struct mvumi_ob_data *)
list_first_entry(&mhba->ob_data_list,
struct mvumi_ob_data, list);
list_del_init(&ob_data->list);
} else {
ob_data = NULL;
if (cur_obf == 0) {
cur_obf = mhba->list_num_io - 1;
mhba->ob_cur_slot ^= regs->cl_pointer_toggle;
} else
cur_obf -= 1;
break;
}
memcpy(ob_data->data, p_outb_frame, mhba->ob_max_size);
p_outb_frame->tag = 0xff;
list_add_tail(&ob_data->list, &mhba->free_ob_list);
}
mhba->ob_cur_slot &= ~regs->cl_slot_num_mask;
mhba->ob_cur_slot |= (cur_obf & regs->cl_slot_num_mask);
iowrite32(mhba->ob_cur_slot, regs->outb_read_pointer);
}
static void mvumi_reset(struct mvumi_hba *mhba)
{
struct mvumi_hw_regs *regs = mhba->regs;
iowrite32(0, regs->enpointa_mask_reg);
if (ioread32(regs->arm_to_pciea_msg1) != HANDSHAKE_DONESTATE)
return;
iowrite32(DRBL_SOFT_RESET, regs->pciea_to_arm_drbl_reg);
}
static unsigned char mvumi_start(struct mvumi_hba *mhba);
static int mvumi_wait_for_outstanding(struct mvumi_hba *mhba)
{
mhba->fw_state = FW_STATE_ABORT;
mvumi_reset(mhba);
if (mvumi_start(mhba))
return FAILED;
else
return SUCCESS;
}
static int mvumi_wait_for_fw(struct mvumi_hba *mhba)
{
struct mvumi_hw_regs *regs = mhba->regs;
u32 tmp;
unsigned long before;
before = jiffies;
iowrite32(0, regs->enpointa_mask_reg);
tmp = ioread32(regs->arm_to_pciea_msg1);
while (tmp != HANDSHAKE_READYSTATE) {
iowrite32(DRBL_MU_RESET, regs->pciea_to_arm_drbl_reg);
if (time_after(jiffies, before + FW_MAX_DELAY * HZ)) {
dev_err(&mhba->pdev->dev,
"FW reset failed [0x%x].\n", tmp);
return FAILED;
}
msleep(500);
rmb();
tmp = ioread32(regs->arm_to_pciea_msg1);
}
return SUCCESS;
}
static void mvumi_backup_bar_addr(struct mvumi_hba *mhba)
{
unsigned char i;
for (i = 0; i < MAX_BASE_ADDRESS; i++) {
pci_read_config_dword(mhba->pdev, 0x10 + i * 4,
&mhba->pci_base[i]);
}
}
static void mvumi_restore_bar_addr(struct mvumi_hba *mhba)
{
unsigned char i;
for (i = 0; i < MAX_BASE_ADDRESS; i++) {
if (mhba->pci_base[i])
pci_write_config_dword(mhba->pdev, 0x10 + i * 4,
mhba->pci_base[i]);
}
}
static int mvumi_pci_set_master(struct pci_dev *pdev)
{
int ret = 0;
pci_set_master(pdev);
if (IS_DMA64) {
if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)))
ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
} else
ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
return ret;
}
static int mvumi_reset_host_9580(struct mvumi_hba *mhba)
{
mhba->fw_state = FW_STATE_ABORT;
iowrite32(0, mhba->regs->reset_enable);
iowrite32(0xf, mhba->regs->reset_request);
iowrite32(0x10, mhba->regs->reset_enable);
iowrite32(0x10, mhba->regs->reset_request);
msleep(100);
pci_disable_device(mhba->pdev);
if (pci_enable_device(mhba->pdev)) {
dev_err(&mhba->pdev->dev, "enable device failed\n");
return FAILED;
}
if (mvumi_pci_set_master(mhba->pdev)) {
dev_err(&mhba->pdev->dev, "set master failed\n");
return FAILED;
}
mvumi_restore_bar_addr(mhba);
if (mvumi_wait_for_fw(mhba) == FAILED)
return FAILED;
return mvumi_wait_for_outstanding(mhba);
}
static int mvumi_reset_host_9143(struct mvumi_hba *mhba)
{
return mvumi_wait_for_outstanding(mhba);
}
static int mvumi_host_reset(struct scsi_cmnd *scmd)
{
struct mvumi_hba *mhba;
mhba = (struct mvumi_hba *) scmd->device->host->hostdata;
scmd_printk(KERN_NOTICE, scmd, "RESET -%u cmd=%x retries=%x\n",
scsi_cmd_to_rq(scmd)->tag, scmd->cmnd[0], scmd->retries);
return mhba->instancet->reset_host(mhba);
}
static int mvumi_issue_blocked_cmd(struct mvumi_hba *mhba,
struct mvumi_cmd *cmd)
{
unsigned long flags;
cmd->cmd_status = REQ_STATUS_PENDING;
if (atomic_read(&cmd->sync_cmd)) {
dev_err(&mhba->pdev->dev,
"last blocked cmd not finished, sync_cmd = %d\n",
atomic_read(&cmd->sync_cmd));
BUG_ON(1);
return -1;
}
atomic_inc(&cmd->sync_cmd);
spin_lock_irqsave(mhba->shost->host_lock, flags);
mhba->instancet->fire_cmd(mhba, cmd);
spin_unlock_irqrestore(mhba->shost->host_lock, flags);
wait_event_timeout(mhba->int_cmd_wait_q,
(cmd->cmd_status != REQ_STATUS_PENDING),
MVUMI_INTERNAL_CMD_WAIT_TIME * HZ);
/* command timeout */
if (atomic_read(&cmd->sync_cmd)) {
spin_lock_irqsave(mhba->shost->host_lock, flags);
atomic_dec(&cmd->sync_cmd);
if (mhba->tag_cmd[cmd->frame->tag]) {
mhba->tag_cmd[cmd->frame->tag] = NULL;
dev_warn(&mhba->pdev->dev, "TIMEOUT:release tag [%d]\n",
cmd->frame->tag);
tag_release_one(mhba, &mhba->tag_pool, cmd->frame->tag);
}
if (!list_empty(&cmd->queue_pointer)) {
dev_warn(&mhba->pdev->dev,
"TIMEOUT:A internal command doesn't send!\n");
list_del_init(&cmd->queue_pointer);
} else
atomic_dec(&mhba->fw_outstanding);
spin_unlock_irqrestore(mhba->shost->host_lock, flags);
}
return 0;
}
static void mvumi_release_fw(struct mvumi_hba *mhba)
{
mvumi_free_cmds(mhba);
mvumi_release_mem_resource(mhba);
mvumi_unmap_pci_addr(mhba->pdev, mhba->base_addr);
dma_free_coherent(&mhba->pdev->dev, HSP_MAX_SIZE,
mhba->handshake_page, mhba->handshake_page_phys);
kfree(mhba->regs);
pci_release_regions(mhba->pdev);
}
static unsigned char mvumi_flush_cache(struct mvumi_hba *mhba)
{
struct mvumi_cmd *cmd;
struct mvumi_msg_frame *frame;
unsigned char device_id, retry = 0;
unsigned char bitcount = sizeof(unsigned char) * 8;
for (device_id = 0; device_id < mhba->max_target_id; device_id++) {
if (!(mhba->target_map[device_id / bitcount] &
(1 << (device_id % bitcount))))
continue;
get_cmd: cmd = mvumi_create_internal_cmd(mhba, 0);
if (!cmd) {
if (retry++ >= 5) {
dev_err(&mhba->pdev->dev, "failed to get memory"
" for internal flush cache cmd for "
"device %d", device_id);
retry = 0;
continue;
} else
goto get_cmd;
}
cmd->scmd = NULL;
cmd->cmd_status = REQ_STATUS_PENDING;
atomic_set(&cmd->sync_cmd, 0);
frame = cmd->frame;
frame->req_function = CL_FUN_SCSI_CMD;
frame->device_id = device_id;
frame->cmd_flag = CMD_FLAG_NON_DATA;
frame->data_transfer_length = 0;
frame->cdb_length = MAX_COMMAND_SIZE;
memset(frame->cdb, 0, MAX_COMMAND_SIZE);
frame->cdb[0] = SCSI_CMD_MARVELL_SPECIFIC;
frame->cdb[1] = CDB_CORE_MODULE;
frame->cdb[2] = CDB_CORE_SHUTDOWN;
mvumi_issue_blocked_cmd(mhba, cmd);
if (cmd->cmd_status != SAM_STAT_GOOD) {
dev_err(&mhba->pdev->dev,
"device %d flush cache failed, status=0x%x.\n",
device_id, cmd->cmd_status);
}
mvumi_delete_internal_cmd(mhba, cmd);
}
return 0;
}
static unsigned char
mvumi_calculate_checksum(struct mvumi_hs_header *p_header,
unsigned short len)
{
unsigned char *ptr;
unsigned char ret = 0, i;
ptr = (unsigned char *) p_header->frame_content;
for (i = 0; i < len; i++) {
ret ^= *ptr;
ptr++;
}
return ret;
}
static void mvumi_hs_build_page(struct mvumi_hba *mhba,
struct mvumi_hs_header *hs_header)
{
struct mvumi_hs_page2 *hs_page2;
struct mvumi_hs_page4 *hs_page4;
struct mvumi_hs_page3 *hs_page3;
u64 time;
u64 local_time;
switch (hs_header->page_code) {
case HS_PAGE_HOST_INFO:
hs_page2 = (struct mvumi_hs_page2 *) hs_header;
hs_header->frame_length = sizeof(*hs_page2) - 4;
memset(hs_header->frame_content, 0, hs_header->frame_length);
hs_page2->host_type = 3; /* 3 mean linux*/
if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC)
hs_page2->host_cap = 0x08;/* host dynamic source mode */
hs_page2->host_ver.ver_major = VER_MAJOR;
hs_page2->host_ver.ver_minor = VER_MINOR;
hs_page2->host_ver.ver_oem = VER_OEM;
hs_page2->host_ver.ver_build = VER_BUILD;
hs_page2->system_io_bus = 0;
hs_page2->slot_number = 0;
hs_page2->intr_level = 0;
hs_page2->intr_vector = 0;
time = ktime_get_real_seconds();
local_time = (time - (sys_tz.tz_minuteswest * 60));
hs_page2->seconds_since1970 = local_time;
hs_header->checksum = mvumi_calculate_checksum(hs_header,
hs_header->frame_length);
break;
case HS_PAGE_FIRM_CTL:
hs_page3 = (struct mvumi_hs_page3 *) hs_header;
hs_header->frame_length = sizeof(*hs_page3) - 4;
memset(hs_header->frame_content, 0, hs_header->frame_length);
hs_header->checksum = mvumi_calculate_checksum(hs_header,
hs_header->frame_length);
break;
case HS_PAGE_CL_INFO:
hs_page4 = (struct mvumi_hs_page4 *) hs_header;
hs_header->frame_length = sizeof(*hs_page4) - 4;
memset(hs_header->frame_content, 0, hs_header->frame_length);
hs_page4->ib_baseaddr_l = lower_32_bits(mhba->ib_list_phys);
hs_page4->ib_baseaddr_h = upper_32_bits(mhba->ib_list_phys);
hs_page4->ob_baseaddr_l = lower_32_bits(mhba->ob_list_phys);
hs_page4->ob_baseaddr_h = upper_32_bits(mhba->ob_list_phys);
hs_page4->ib_entry_size = mhba->ib_max_size_setting;
hs_page4->ob_entry_size = mhba->ob_max_size_setting;
if (mhba->hba_capability
& HS_CAPABILITY_NEW_PAGE_IO_DEPTH_DEF) {
hs_page4->ob_depth = find_first_bit((unsigned long *)
&mhba->list_num_io,
BITS_PER_LONG);
hs_page4->ib_depth = find_first_bit((unsigned long *)
&mhba->list_num_io,
BITS_PER_LONG);
} else {
hs_page4->ob_depth = (u8) mhba->list_num_io;
hs_page4->ib_depth = (u8) mhba->list_num_io;
}
hs_header->checksum = mvumi_calculate_checksum(hs_header,
hs_header->frame_length);
break;
default:
dev_err(&mhba->pdev->dev, "cannot build page, code[0x%x]\n",
hs_header->page_code);
break;
}
}
/**
* mvumi_init_data - Initialize requested date for FW
* @mhba: Adapter soft state
*/
static int mvumi_init_data(struct mvumi_hba *mhba)
{
struct mvumi_ob_data *ob_pool;
struct mvumi_res *res_mgnt;
unsigned int tmp_size, offset, i;
void *virmem, *v;
dma_addr_t p;
if (mhba->fw_flag & MVUMI_FW_ALLOC)
return 0;
tmp_size = mhba->ib_max_size * mhba->max_io;
if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC)
tmp_size += sizeof(struct mvumi_dyn_list_entry) * mhba->max_io;
tmp_size += 128 + mhba->ob_max_size * mhba->max_io;
tmp_size += 8 + sizeof(u32)*2 + 16;
res_mgnt = mvumi_alloc_mem_resource(mhba,
RESOURCE_UNCACHED_MEMORY, tmp_size);
if (!res_mgnt) {
dev_err(&mhba->pdev->dev,
"failed to allocate memory for inbound list\n");
goto fail_alloc_dma_buf;
}
p = res_mgnt->bus_addr;
v = res_mgnt->virt_addr;
/* ib_list */
offset = round_up(p, 128) - p;
p += offset;
v += offset;
mhba->ib_list = v;
mhba->ib_list_phys = p;
if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC) {
v += sizeof(struct mvumi_dyn_list_entry) * mhba->max_io;
p += sizeof(struct mvumi_dyn_list_entry) * mhba->max_io;
mhba->ib_frame = v;
mhba->ib_frame_phys = p;
}
v += mhba->ib_max_size * mhba->max_io;
p += mhba->ib_max_size * mhba->max_io;
/* ib shadow */
offset = round_up(p, 8) - p;
p += offset;
v += offset;
mhba->ib_shadow = v;
mhba->ib_shadow_phys = p;
p += sizeof(u32)*2;
v += sizeof(u32)*2;
/* ob shadow */
if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580) {
offset = round_up(p, 8) - p;
p += offset;
v += offset;
mhba->ob_shadow = v;
mhba->ob_shadow_phys = p;
p += 8;
v += 8;
} else {
offset = round_up(p, 4) - p;
p += offset;
v += offset;
mhba->ob_shadow = v;
mhba->ob_shadow_phys = p;
p += 4;
v += 4;
}
/* ob list */
offset = round_up(p, 128) - p;
p += offset;
v += offset;
mhba->ob_list = v;
mhba->ob_list_phys = p;
/* ob data pool */
tmp_size = mhba->max_io * (mhba->ob_max_size + sizeof(*ob_pool));
tmp_size = round_up(tmp_size, 8);
res_mgnt = mvumi_alloc_mem_resource(mhba,
RESOURCE_CACHED_MEMORY, tmp_size);
if (!res_mgnt) {
dev_err(&mhba->pdev->dev,
"failed to allocate memory for outbound data buffer\n");
goto fail_alloc_dma_buf;
}
virmem = res_mgnt->virt_addr;
for (i = mhba->max_io; i != 0; i--) {
ob_pool = (struct mvumi_ob_data *) virmem;