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linux-next/drivers/scsi/be2iscsi/be_cmds.c
Jayamohan Kallickal 3567f36a09 [SCSI] be2iscsi: Fix AER handling in driver 
Signed-off-by: Minh Tran <minhduc.tran@emulex.com>
Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-10-25 09:58:10 +01:00

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/**
* Copyright (C) 2005 - 2013 Emulex
* All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation. The full GNU General
* Public License is included in this distribution in the file called COPYING.
*
* Contact Information:
* linux-drivers@emulex.com
*
* Emulex
* 3333 Susan Street
* Costa Mesa, CA 92626
*/
#include <scsi/iscsi_proto.h>
#include "be_main.h"
#include "be.h"
#include "be_mgmt.h"
int beiscsi_pci_soft_reset(struct beiscsi_hba *phba)
{
u32 sreset;
u8 *pci_reset_offset = 0;
u8 *pci_online0_offset = 0;
u8 *pci_online1_offset = 0;
u32 pconline0 = 0;
u32 pconline1 = 0;
u32 i;
pci_reset_offset = (u8 *)phba->pci_va + BE2_SOFT_RESET;
pci_online0_offset = (u8 *)phba->pci_va + BE2_PCI_ONLINE0;
pci_online1_offset = (u8 *)phba->pci_va + BE2_PCI_ONLINE1;
sreset = readl((void *)pci_reset_offset);
sreset |= BE2_SET_RESET;
writel(sreset, (void *)pci_reset_offset);
i = 0;
while (sreset & BE2_SET_RESET) {
if (i > 64)
break;
msleep(100);
sreset = readl((void *)pci_reset_offset);
i++;
}
if (sreset & BE2_SET_RESET) {
printk(KERN_ERR DRV_NAME
" Soft Reset did not deassert\n");
return -EIO;
}
pconline1 = BE2_MPU_IRAM_ONLINE;
writel(pconline0, (void *)pci_online0_offset);
writel(pconline1, (void *)pci_online1_offset);
sreset |= BE2_SET_RESET;
writel(sreset, (void *)pci_reset_offset);
i = 0;
while (sreset & BE2_SET_RESET) {
if (i > 64)
break;
msleep(1);
sreset = readl((void *)pci_reset_offset);
i++;
}
if (sreset & BE2_SET_RESET) {
printk(KERN_ERR DRV_NAME
" MPU Online Soft Reset did not deassert\n");
return -EIO;
}
return 0;
}
int be_chk_reset_complete(struct beiscsi_hba *phba)
{
unsigned int num_loop;
u8 *mpu_sem = 0;
u32 status;
num_loop = 1000;
mpu_sem = (u8 *)phba->csr_va + MPU_EP_SEMAPHORE;
msleep(5000);
while (num_loop) {
status = readl((void *)mpu_sem);
if ((status & 0x80000000) || (status & 0x0000FFFF) == 0xC000)
break;
msleep(60);
num_loop--;
}
if ((status & 0x80000000) || (!num_loop)) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BC_%d : Failed in be_chk_reset_complete"
"status = 0x%x\n", status);
return -EIO;
}
return 0;
}
void be_mcc_notify(struct beiscsi_hba *phba)
{
struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
u32 val = 0;
val |= mccq->id & DB_MCCQ_RING_ID_MASK;
val |= 1 << DB_MCCQ_NUM_POSTED_SHIFT;
iowrite32(val, phba->db_va + DB_MCCQ_OFFSET);
}
unsigned int alloc_mcc_tag(struct beiscsi_hba *phba)
{
unsigned int tag = 0;
if (phba->ctrl.mcc_tag_available) {
tag = phba->ctrl.mcc_tag[phba->ctrl.mcc_alloc_index];
phba->ctrl.mcc_tag[phba->ctrl.mcc_alloc_index] = 0;
phba->ctrl.mcc_numtag[tag] = 0;
}
if (tag) {
phba->ctrl.mcc_tag_available--;
if (phba->ctrl.mcc_alloc_index == (MAX_MCC_CMD - 1))
phba->ctrl.mcc_alloc_index = 0;
else
phba->ctrl.mcc_alloc_index++;
}
return tag;
}
/*
* beiscsi_mccq_compl()- Wait for completion of MBX
* @phba: Driver private structure
* @tag: Tag for the MBX Command
* @wrb: the WRB used for the MBX Command
* @cmd_hdr: IOCTL Hdr for the MBX Cmd
*
* Waits for MBX completion with the passed TAG.
*
* return
* Success: 0
* Failure: Non-Zero
**/
int beiscsi_mccq_compl(struct beiscsi_hba *phba,
uint32_t tag, struct be_mcc_wrb **wrb,
void *cmd_hdr)
{
int rc = 0;
uint32_t mcc_tag_response;
uint16_t status = 0, addl_status = 0, wrb_num = 0;
struct be_mcc_wrb *temp_wrb;
struct be_cmd_req_hdr *ioctl_hdr;
struct be_cmd_resp_hdr *ioctl_resp_hdr;
struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
if (beiscsi_error(phba)) {
free_mcc_tag(&phba->ctrl, tag);
return -EIO;
}
/* wait for the mccq completion */
rc = wait_event_interruptible_timeout(
phba->ctrl.mcc_wait[tag],
phba->ctrl.mcc_numtag[tag],
msecs_to_jiffies(
BEISCSI_HOST_MBX_TIMEOUT));
if (rc <= 0) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_INIT | BEISCSI_LOG_EH |
BEISCSI_LOG_CONFIG,
"BC_%d : MBX Cmd Completion timed out\n");
rc = -EBUSY;
/* decrement the mccq used count */
atomic_dec(&phba->ctrl.mcc_obj.q.used);
goto release_mcc_tag;
} else
rc = 0;
mcc_tag_response = phba->ctrl.mcc_numtag[tag];
status = (mcc_tag_response & CQE_STATUS_MASK);
addl_status = ((mcc_tag_response & CQE_STATUS_ADDL_MASK) >>
CQE_STATUS_ADDL_SHIFT);
if (cmd_hdr) {
ioctl_hdr = (struct be_cmd_req_hdr *)cmd_hdr;
} else {
wrb_num = (mcc_tag_response & CQE_STATUS_WRB_MASK) >>
CQE_STATUS_WRB_SHIFT;
temp_wrb = (struct be_mcc_wrb *)queue_get_wrb(mccq, wrb_num);
ioctl_hdr = embedded_payload(temp_wrb);
if (wrb)
*wrb = temp_wrb;
}
if (status || addl_status) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_INIT | BEISCSI_LOG_EH |
BEISCSI_LOG_CONFIG,
"BC_%d : MBX Cmd Failed for "
"Subsys : %d Opcode : %d with "
"Status : %d and Extd_Status : %d\n",
ioctl_hdr->subsystem,
ioctl_hdr->opcode,
status, addl_status);
if (status == MCC_STATUS_INSUFFICIENT_BUFFER) {
ioctl_resp_hdr = (struct be_cmd_resp_hdr *) ioctl_hdr;
beiscsi_log(phba, KERN_WARNING,
BEISCSI_LOG_INIT | BEISCSI_LOG_EH |
BEISCSI_LOG_CONFIG,
"BC_%d : Insufficent Buffer Error "
"Resp_Len : %d Actual_Resp_Len : %d\n",
ioctl_resp_hdr->response_length,
ioctl_resp_hdr->actual_resp_len);
rc = -EAGAIN;
goto release_mcc_tag;
}
rc = -EIO;
}
release_mcc_tag:
/* Release the MCC entry */
free_mcc_tag(&phba->ctrl, tag);
return rc;
}
void free_mcc_tag(struct be_ctrl_info *ctrl, unsigned int tag)
{
spin_lock(&ctrl->mbox_lock);
tag = tag & 0x000000FF;
ctrl->mcc_tag[ctrl->mcc_free_index] = tag;
if (ctrl->mcc_free_index == (MAX_MCC_CMD - 1))
ctrl->mcc_free_index = 0;
else
ctrl->mcc_free_index++;
ctrl->mcc_tag_available++;
spin_unlock(&ctrl->mbox_lock);
}
bool is_link_state_evt(u32 trailer)
{
return (((trailer >> ASYNC_TRAILER_EVENT_CODE_SHIFT) &
ASYNC_TRAILER_EVENT_CODE_MASK) ==
ASYNC_EVENT_CODE_LINK_STATE);
}
static inline bool be_mcc_compl_is_new(struct be_mcc_compl *compl)
{
if (compl->flags != 0) {
compl->flags = le32_to_cpu(compl->flags);
WARN_ON((compl->flags & CQE_FLAGS_VALID_MASK) == 0);
return true;
} else
return false;
}
static inline void be_mcc_compl_use(struct be_mcc_compl *compl)
{
compl->flags = 0;
}
/*
* be_mcc_compl_process()- Check the MBX comapletion status
* @ctrl: Function specific MBX data structure
* @compl: Completion status of MBX Command
*
* Check for the MBX completion status when BMBX method used
*
* return
* Success: Zero
* Failure: Non-Zero
**/
static int be_mcc_compl_process(struct be_ctrl_info *ctrl,
struct be_mcc_compl *compl)
{
u16 compl_status, extd_status;
struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
struct be_cmd_req_hdr *hdr = embedded_payload(wrb);
struct be_cmd_resp_hdr *resp_hdr;
be_dws_le_to_cpu(compl, 4);
compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) &
CQE_STATUS_COMPL_MASK;
if (compl_status != MCC_STATUS_SUCCESS) {
extd_status = (compl->status >> CQE_STATUS_EXTD_SHIFT) &
CQE_STATUS_EXTD_MASK;
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
"BC_%d : error in cmd completion: "
"Subsystem : %d Opcode : %d "
"status(compl/extd)=%d/%d\n",
hdr->subsystem, hdr->opcode,
compl_status, extd_status);
if (compl_status == MCC_STATUS_INSUFFICIENT_BUFFER) {
resp_hdr = (struct be_cmd_resp_hdr *) hdr;
if (resp_hdr->response_length)
return 0;
}
return -EBUSY;
}
return 0;
}
int be_mcc_compl_process_isr(struct be_ctrl_info *ctrl,
struct be_mcc_compl *compl)
{
u16 compl_status, extd_status;
unsigned short tag;
be_dws_le_to_cpu(compl, 4);
compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) &
CQE_STATUS_COMPL_MASK;
/* The ctrl.mcc_numtag[tag] is filled with
* [31] = valid, [30:24] = Rsvd, [23:16] = wrb, [15:8] = extd_status,
* [7:0] = compl_status
*/
tag = (compl->tag0 & 0x000000FF);
extd_status = (compl->status >> CQE_STATUS_EXTD_SHIFT) &
CQE_STATUS_EXTD_MASK;
ctrl->mcc_numtag[tag] = 0x80000000;
ctrl->mcc_numtag[tag] |= (compl->tag0 & 0x00FF0000);
ctrl->mcc_numtag[tag] |= (extd_status & 0x000000FF) << 8;
ctrl->mcc_numtag[tag] |= (compl_status & 0x000000FF);
wake_up_interruptible(&ctrl->mcc_wait[tag]);
return 0;
}
static struct be_mcc_compl *be_mcc_compl_get(struct beiscsi_hba *phba)
{
struct be_queue_info *mcc_cq = &phba->ctrl.mcc_obj.cq;
struct be_mcc_compl *compl = queue_tail_node(mcc_cq);
if (be_mcc_compl_is_new(compl)) {
queue_tail_inc(mcc_cq);
return compl;
}
return NULL;
}
static void be2iscsi_fail_session(struct iscsi_cls_session *cls_session)
{
iscsi_session_failure(cls_session->dd_data, ISCSI_ERR_CONN_FAILED);
}
void beiscsi_async_link_state_process(struct beiscsi_hba *phba,
struct be_async_event_link_state *evt)
{
if ((evt->port_link_status == ASYNC_EVENT_LINK_DOWN) ||
((evt->port_link_status & ASYNC_EVENT_LOGICAL) &&
(evt->port_fault != BEISCSI_PHY_LINK_FAULT_NONE))) {
phba->state = BE_ADAPTER_LINK_DOWN;
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_INIT,
"BC_%d : Link Down on Port %d\n",
evt->physical_port);
iscsi_host_for_each_session(phba->shost,
be2iscsi_fail_session);
} else if ((evt->port_link_status & ASYNC_EVENT_LINK_UP) ||
((evt->port_link_status & ASYNC_EVENT_LOGICAL) &&
(evt->port_fault == BEISCSI_PHY_LINK_FAULT_NONE))) {
phba->state = BE_ADAPTER_LINK_UP;
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_INIT,
"BC_%d : Link UP on Port %d\n",
evt->physical_port);
}
}
static void beiscsi_cq_notify(struct beiscsi_hba *phba, u16 qid, bool arm,
u16 num_popped)
{
u32 val = 0;
val |= qid & DB_CQ_RING_ID_MASK;
if (arm)
val |= 1 << DB_CQ_REARM_SHIFT;
val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
iowrite32(val, phba->db_va + DB_CQ_OFFSET);
}
int beiscsi_process_mcc(struct beiscsi_hba *phba)
{
struct be_mcc_compl *compl;
int num = 0, status = 0;
struct be_ctrl_info *ctrl = &phba->ctrl;
spin_lock_bh(&phba->ctrl.mcc_cq_lock);
while ((compl = be_mcc_compl_get(phba))) {
if (compl->flags & CQE_FLAGS_ASYNC_MASK) {
/* Interpret flags as an async trailer */
if (is_link_state_evt(compl->flags))
/* Interpret compl as a async link evt */
beiscsi_async_link_state_process(phba,
(struct be_async_event_link_state *) compl);
else
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG |
BEISCSI_LOG_MBOX,
"BC_%d : Unsupported Async Event, flags"
" = 0x%08x\n", compl->flags);
} else if (compl->flags & CQE_FLAGS_COMPLETED_MASK) {
status = be_mcc_compl_process(ctrl, compl);
atomic_dec(&phba->ctrl.mcc_obj.q.used);
}
be_mcc_compl_use(compl);
num++;
}
if (num)
beiscsi_cq_notify(phba, phba->ctrl.mcc_obj.cq.id, true, num);
spin_unlock_bh(&phba->ctrl.mcc_cq_lock);
return status;
}
/*
* be_mcc_wait_compl()- Wait for MBX completion
* @phba: driver private structure
*
* Wait till no more pending mcc requests are present
*
* return
* Success: 0
* Failure: Non-Zero
*
**/
static int be_mcc_wait_compl(struct beiscsi_hba *phba)
{
int i, status;
for (i = 0; i < mcc_timeout; i++) {
if (beiscsi_error(phba))
return -EIO;
status = beiscsi_process_mcc(phba);
if (status)
return status;
if (atomic_read(&phba->ctrl.mcc_obj.q.used) == 0)
break;
udelay(100);
}
if (i == mcc_timeout) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
"BC_%d : FW Timed Out\n");
phba->fw_timeout = true;
beiscsi_ue_detect(phba);
return -EBUSY;
}
return 0;
}
/*
* be_mcc_notify_wait()- Notify and wait for Compl
* @phba: driver private structure
*
* Notify MCC requests and wait for completion
*
* return
* Success: 0
* Failure: Non-Zero
**/
int be_mcc_notify_wait(struct beiscsi_hba *phba)
{
be_mcc_notify(phba);
return be_mcc_wait_compl(phba);
}
/*
* be_mbox_db_ready_wait()- Check ready status
* @ctrl: Function specific MBX data structure
*
* Check for the ready status of FW to send BMBX
* commands to adapter.
*
* return
* Success: 0
* Failure: Non-Zero
**/
static int be_mbox_db_ready_wait(struct be_ctrl_info *ctrl)
{
#define BEISCSI_MBX_RDY_BIT_TIMEOUT 4000 /* 4sec */
void __iomem *db = ctrl->db + MPU_MAILBOX_DB_OFFSET;
struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
unsigned long timeout;
bool read_flag = false;
int ret = 0, i;
u32 ready;
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(rdybit_check_q);
if (beiscsi_error(phba))
return -EIO;
timeout = jiffies + (HZ * 110);
do {
for (i = 0; i < BEISCSI_MBX_RDY_BIT_TIMEOUT; i++) {
ready = ioread32(db) & MPU_MAILBOX_DB_RDY_MASK;
if (ready) {
read_flag = true;
break;
}
mdelay(1);
}
if (!read_flag) {
wait_event_timeout(rdybit_check_q,
(read_flag != true),
HZ * 5);
}
} while ((time_before(jiffies, timeout)) && !read_flag);
if (!read_flag) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
"BC_%d : FW Timed Out\n");
phba->fw_timeout = true;
beiscsi_ue_detect(phba);
ret = -EBUSY;
}
return ret;
}
/*
* be_mbox_notify: Notify adapter of new BMBX command
* @ctrl: Function specific MBX data structure
*
* Ring doorbell to inform adapter of a BMBX command
* to process
*
* return
* Success: 0
* Failure: Non-Zero
**/
int be_mbox_notify(struct be_ctrl_info *ctrl)
{
int status;
u32 val = 0;
void __iomem *db = ctrl->db + MPU_MAILBOX_DB_OFFSET;
struct be_dma_mem *mbox_mem = &ctrl->mbox_mem;
struct be_mcc_mailbox *mbox = mbox_mem->va;
struct be_mcc_compl *compl = &mbox->compl;
struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
status = be_mbox_db_ready_wait(ctrl);
if (status)
return status;
val &= ~MPU_MAILBOX_DB_RDY_MASK;
val |= MPU_MAILBOX_DB_HI_MASK;
val |= (upper_32_bits(mbox_mem->dma) >> 2) << 2;
iowrite32(val, db);
status = be_mbox_db_ready_wait(ctrl);
if (status)
return status;
val = 0;
val &= ~MPU_MAILBOX_DB_RDY_MASK;
val &= ~MPU_MAILBOX_DB_HI_MASK;
val |= (u32) (mbox_mem->dma >> 4) << 2;
iowrite32(val, db);
status = be_mbox_db_ready_wait(ctrl);
if (status)
return status;
if (be_mcc_compl_is_new(compl)) {
status = be_mcc_compl_process(ctrl, &mbox->compl);
be_mcc_compl_use(compl);
if (status) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
"BC_%d : After be_mcc_compl_process\n");
return status;
}
} else {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
"BC_%d : Invalid Mailbox Completion\n");
return -EBUSY;
}
return 0;
}
/*
* Insert the mailbox address into the doorbell in two steps
* Polls on the mbox doorbell till a command completion (or a timeout) occurs
*/
static int be_mbox_notify_wait(struct beiscsi_hba *phba)
{
int status;
u32 val = 0;
void __iomem *db = phba->ctrl.db + MPU_MAILBOX_DB_OFFSET;
struct be_dma_mem *mbox_mem = &phba->ctrl.mbox_mem;
struct be_mcc_mailbox *mbox = mbox_mem->va;
struct be_mcc_compl *compl = &mbox->compl;
struct be_ctrl_info *ctrl = &phba->ctrl;
status = be_mbox_db_ready_wait(ctrl);
if (status)
return status;
val |= MPU_MAILBOX_DB_HI_MASK;
/* at bits 2 - 31 place mbox dma addr msb bits 34 - 63 */
val |= (upper_32_bits(mbox_mem->dma) >> 2) << 2;
iowrite32(val, db);
/* wait for ready to be set */
status = be_mbox_db_ready_wait(ctrl);
if (status != 0)
return status;
val = 0;
/* at bits 2 - 31 place mbox dma addr lsb bits 4 - 33 */
val |= (u32)(mbox_mem->dma >> 4) << 2;
iowrite32(val, db);
status = be_mbox_db_ready_wait(ctrl);
if (status != 0)
return status;
/* A cq entry has been made now */
if (be_mcc_compl_is_new(compl)) {
status = be_mcc_compl_process(ctrl, &mbox->compl);
be_mcc_compl_use(compl);
if (status)
return status;
} else {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
"BC_%d : invalid mailbox completion\n");
return -EBUSY;
}
return 0;
}
void be_wrb_hdr_prepare(struct be_mcc_wrb *wrb, int payload_len,
bool embedded, u8 sge_cnt)
{
if (embedded)
wrb->embedded |= MCC_WRB_EMBEDDED_MASK;
else
wrb->embedded |= (sge_cnt & MCC_WRB_SGE_CNT_MASK) <<
MCC_WRB_SGE_CNT_SHIFT;
wrb->payload_length = payload_len;
be_dws_cpu_to_le(wrb, 8);
}
void be_cmd_hdr_prepare(struct be_cmd_req_hdr *req_hdr,
u8 subsystem, u8 opcode, int cmd_len)
{
req_hdr->opcode = opcode;
req_hdr->subsystem = subsystem;
req_hdr->request_length = cpu_to_le32(cmd_len - sizeof(*req_hdr));
req_hdr->timeout = BEISCSI_FW_MBX_TIMEOUT;
}
static void be_cmd_page_addrs_prepare(struct phys_addr *pages, u32 max_pages,
struct be_dma_mem *mem)
{
int i, buf_pages;
u64 dma = (u64) mem->dma;
buf_pages = min(PAGES_4K_SPANNED(mem->va, mem->size), max_pages);
for (i = 0; i < buf_pages; i++) {
pages[i].lo = cpu_to_le32(dma & 0xFFFFFFFF);
pages[i].hi = cpu_to_le32(upper_32_bits(dma));
dma += PAGE_SIZE_4K;
}
}
static u32 eq_delay_to_mult(u32 usec_delay)
{
#define MAX_INTR_RATE 651042
const u32 round = 10;
u32 multiplier;
if (usec_delay == 0)
multiplier = 0;
else {
u32 interrupt_rate = 1000000 / usec_delay;
if (interrupt_rate == 0)
multiplier = 1023;
else {
multiplier = (MAX_INTR_RATE - interrupt_rate) * round;
multiplier /= interrupt_rate;
multiplier = (multiplier + round / 2) / round;
multiplier = min(multiplier, (u32) 1023);
}
}
return multiplier;
}
struct be_mcc_wrb *wrb_from_mbox(struct be_dma_mem *mbox_mem)
{
return &((struct be_mcc_mailbox *)(mbox_mem->va))->wrb;
}
struct be_mcc_wrb *wrb_from_mccq(struct beiscsi_hba *phba)
{
struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
struct be_mcc_wrb *wrb;
WARN_ON(atomic_read(&mccq->used) >= mccq->len);
wrb = queue_head_node(mccq);
memset(wrb, 0, sizeof(*wrb));
wrb->tag0 = (mccq->head & 0x000000FF) << 16;
queue_head_inc(mccq);
atomic_inc(&mccq->used);
return wrb;
}
int beiscsi_cmd_eq_create(struct be_ctrl_info *ctrl,
struct be_queue_info *eq, int eq_delay)
{
struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
struct be_cmd_req_eq_create *req = embedded_payload(wrb);
struct be_cmd_resp_eq_create *resp = embedded_payload(wrb);
struct be_dma_mem *q_mem = &eq->dma_mem;
int status;
spin_lock(&ctrl->mbox_lock);
memset(wrb, 0, sizeof(*wrb));
be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
OPCODE_COMMON_EQ_CREATE, sizeof(*req));
req->num_pages = cpu_to_le16(PAGES_4K_SPANNED(q_mem->va, q_mem->size));
AMAP_SET_BITS(struct amap_eq_context, func, req->context,
PCI_FUNC(ctrl->pdev->devfn));
AMAP_SET_BITS(struct amap_eq_context, valid, req->context, 1);
AMAP_SET_BITS(struct amap_eq_context, size, req->context, 0);
AMAP_SET_BITS(struct amap_eq_context, count, req->context,
__ilog2_u32(eq->len / 256));
AMAP_SET_BITS(struct amap_eq_context, delaymult, req->context,
eq_delay_to_mult(eq_delay));
be_dws_cpu_to_le(req->context, sizeof(req->context));
be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
status = be_mbox_notify(ctrl);
if (!status) {
eq->id = le16_to_cpu(resp->eq_id);
eq->created = true;
}
spin_unlock(&ctrl->mbox_lock);
return status;
}
/**
* be_cmd_fw_initialize()- Initialize FW
* @ctrl: Pointer to function control structure
*
* Send FW initialize pattern for the function.
*
* return
* Success: 0
* Failure: Non-Zero value
**/
int be_cmd_fw_initialize(struct be_ctrl_info *ctrl)
{
struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
int status;
u8 *endian_check;
spin_lock(&ctrl->mbox_lock);
memset(wrb, 0, sizeof(*wrb));
endian_check = (u8 *) wrb;
*endian_check++ = 0xFF;
*endian_check++ = 0x12;
*endian_check++ = 0x34;
*endian_check++ = 0xFF;
*endian_check++ = 0xFF;
*endian_check++ = 0x56;
*endian_check++ = 0x78;
*endian_check++ = 0xFF;
be_dws_cpu_to_le(wrb, sizeof(*wrb));
status = be_mbox_notify(ctrl);
if (status)
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BC_%d : be_cmd_fw_initialize Failed\n");
spin_unlock(&ctrl->mbox_lock);
return status;
}
/**
* be_cmd_fw_uninit()- Uinitialize FW
* @ctrl: Pointer to function control structure
*
* Send FW uninitialize pattern for the function
*
* return
* Success: 0
* Failure: Non-Zero value
**/
int be_cmd_fw_uninit(struct be_ctrl_info *ctrl)
{
struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
int status;
u8 *endian_check;
spin_lock(&ctrl->mbox_lock);
memset(wrb, 0, sizeof(*wrb));
endian_check = (u8 *) wrb;
*endian_check++ = 0xFF;
*endian_check++ = 0xAA;
*endian_check++ = 0xBB;
*endian_check++ = 0xFF;
*endian_check++ = 0xFF;
*endian_check++ = 0xCC;
*endian_check++ = 0xDD;
*endian_check = 0xFF;
be_dws_cpu_to_le(wrb, sizeof(*wrb));
status = be_mbox_notify(ctrl);
if (status)
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BC_%d : be_cmd_fw_uninit Failed\n");
spin_unlock(&ctrl->mbox_lock);
return status;
}
int beiscsi_cmd_cq_create(struct be_ctrl_info *ctrl,
struct be_queue_info *cq, struct be_queue_info *eq,
bool sol_evts, bool no_delay, int coalesce_wm)
{
struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
struct be_cmd_req_cq_create *req = embedded_payload(wrb);
struct be_cmd_resp_cq_create *resp = embedded_payload(wrb);
struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
struct be_dma_mem *q_mem = &cq->dma_mem;
void *ctxt = &req->context;
int status;
spin_lock(&ctrl->mbox_lock);
memset(wrb, 0, sizeof(*wrb));
be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
OPCODE_COMMON_CQ_CREATE, sizeof(*req));
req->num_pages = cpu_to_le16(PAGES_4K_SPANNED(q_mem->va, q_mem->size));
if (is_chip_be2_be3r(phba)) {
AMAP_SET_BITS(struct amap_cq_context, coalescwm,
ctxt, coalesce_wm);
AMAP_SET_BITS(struct amap_cq_context, nodelay, ctxt, no_delay);
AMAP_SET_BITS(struct amap_cq_context, count, ctxt,
__ilog2_u32(cq->len / 256));
AMAP_SET_BITS(struct amap_cq_context, valid, ctxt, 1);
AMAP_SET_BITS(struct amap_cq_context, solevent, ctxt, sol_evts);
AMAP_SET_BITS(struct amap_cq_context, eventable, ctxt, 1);
AMAP_SET_BITS(struct amap_cq_context, eqid, ctxt, eq->id);
AMAP_SET_BITS(struct amap_cq_context, armed, ctxt, 1);
AMAP_SET_BITS(struct amap_cq_context, func, ctxt,
PCI_FUNC(ctrl->pdev->devfn));
} else {
req->hdr.version = MBX_CMD_VER2;
req->page_size = 1;
AMAP_SET_BITS(struct amap_cq_context_v2, coalescwm,
ctxt, coalesce_wm);
AMAP_SET_BITS(struct amap_cq_context_v2, nodelay,
ctxt, no_delay);
AMAP_SET_BITS(struct amap_cq_context_v2, count, ctxt,
__ilog2_u32(cq->len / 256));
AMAP_SET_BITS(struct amap_cq_context_v2, valid, ctxt, 1);
AMAP_SET_BITS(struct amap_cq_context_v2, eventable, ctxt, 1);
AMAP_SET_BITS(struct amap_cq_context_v2, eqid, ctxt, eq->id);
AMAP_SET_BITS(struct amap_cq_context_v2, armed, ctxt, 1);
}
be_dws_cpu_to_le(ctxt, sizeof(req->context));
be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
status = be_mbox_notify(ctrl);
if (!status) {
cq->id = le16_to_cpu(resp->cq_id);
cq->created = true;
} else
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BC_%d : In be_cmd_cq_create, status=ox%08x\n",
status);
spin_unlock(&ctrl->mbox_lock);
return status;
}
static u32 be_encoded_q_len(int q_len)
{
u32 len_encoded = fls(q_len); /* log2(len) + 1 */
if (len_encoded == 16)
len_encoded = 0;
return len_encoded;
}
int beiscsi_cmd_mccq_create(struct beiscsi_hba *phba,
struct be_queue_info *mccq,
struct be_queue_info *cq)
{
struct be_mcc_wrb *wrb;
struct be_cmd_req_mcc_create *req;
struct be_dma_mem *q_mem = &mccq->dma_mem;
struct be_ctrl_info *ctrl;
void *ctxt;
int status;
spin_lock(&phba->ctrl.mbox_lock);
ctrl = &phba->ctrl;
wrb = wrb_from_mbox(&ctrl->mbox_mem);
memset(wrb, 0, sizeof(*wrb));
req = embedded_payload(wrb);
ctxt = &req->context;
be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
OPCODE_COMMON_MCC_CREATE, sizeof(*req));
req->num_pages = PAGES_4K_SPANNED(q_mem->va, q_mem->size);
AMAP_SET_BITS(struct amap_mcc_context, fid, ctxt,
PCI_FUNC(phba->pcidev->devfn));
AMAP_SET_BITS(struct amap_mcc_context, valid, ctxt, 1);
AMAP_SET_BITS(struct amap_mcc_context, ring_size, ctxt,
be_encoded_q_len(mccq->len));
AMAP_SET_BITS(struct amap_mcc_context, cq_id, ctxt, cq->id);
be_dws_cpu_to_le(ctxt, sizeof(req->context));
be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
status = be_mbox_notify_wait(phba);
if (!status) {
struct be_cmd_resp_mcc_create *resp = embedded_payload(wrb);
mccq->id = le16_to_cpu(resp->id);
mccq->created = true;
}
spin_unlock(&phba->ctrl.mbox_lock);
return status;
}
int beiscsi_cmd_q_destroy(struct be_ctrl_info *ctrl, struct be_queue_info *q,
int queue_type)
{
struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
struct be_cmd_req_q_destroy *req = embedded_payload(wrb);
struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
u8 subsys = 0, opcode = 0;
int status;
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BC_%d : In beiscsi_cmd_q_destroy "
"queue_type : %d\n", queue_type);
spin_lock(&ctrl->mbox_lock);
memset(wrb, 0, sizeof(*wrb));
be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
switch (queue_type) {
case QTYPE_EQ:
subsys = CMD_SUBSYSTEM_COMMON;
opcode = OPCODE_COMMON_EQ_DESTROY;
break;
case QTYPE_CQ:
subsys = CMD_SUBSYSTEM_COMMON;
opcode = OPCODE_COMMON_CQ_DESTROY;
break;
case QTYPE_MCCQ:
subsys = CMD_SUBSYSTEM_COMMON;
opcode = OPCODE_COMMON_MCC_DESTROY;
break;
case QTYPE_WRBQ:
subsys = CMD_SUBSYSTEM_ISCSI;
opcode = OPCODE_COMMON_ISCSI_WRBQ_DESTROY;
break;
case QTYPE_DPDUQ:
subsys = CMD_SUBSYSTEM_ISCSI;
opcode = OPCODE_COMMON_ISCSI_DEFQ_DESTROY;
break;
case QTYPE_SGL:
subsys = CMD_SUBSYSTEM_ISCSI;
opcode = OPCODE_COMMON_ISCSI_CFG_REMOVE_SGL_PAGES;
break;
default:
spin_unlock(&ctrl->mbox_lock);
BUG();
return -ENXIO;
}
be_cmd_hdr_prepare(&req->hdr, subsys, opcode, sizeof(*req));
if (queue_type != QTYPE_SGL)
req->id = cpu_to_le16(q->id);
status = be_mbox_notify(ctrl);
spin_unlock(&ctrl->mbox_lock);
return status;
}
/**
* be_cmd_create_default_pdu_queue()- Create DEFQ for the adapter
* @ctrl: ptr to ctrl_info
* @cq: Completion Queue
* @dq: Default Queue
* @lenght: ring size
* @entry_size: size of each entry in DEFQ
* @is_header: Header or Data DEFQ
* @ulp_num: Bind to which ULP
*
* Create HDR/Data DEFQ for the passed ULP. Unsol PDU are posted
* on this queue by the FW
*
* return
* Success: 0
* Failure: Non-Zero Value
*
**/
int be_cmd_create_default_pdu_queue(struct be_ctrl_info *ctrl,
struct be_queue_info *cq,
struct be_queue_info *dq, int length,
int entry_size, uint8_t is_header,
uint8_t ulp_num)
{
struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
struct be_defq_create_req *req = embedded_payload(wrb);
struct be_dma_mem *q_mem = &dq->dma_mem;
struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
void *ctxt = &req->context;
int status;
spin_lock(&ctrl->mbox_lock);
memset(wrb, 0, sizeof(*wrb));
be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
OPCODE_COMMON_ISCSI_DEFQ_CREATE, sizeof(*req));
req->num_pages = PAGES_4K_SPANNED(q_mem->va, q_mem->size);
if (phba->fw_config.dual_ulp_aware) {
req->ulp_num = ulp_num;
req->dua_feature |= (1 << BEISCSI_DUAL_ULP_AWARE_BIT);
req->dua_feature |= (1 << BEISCSI_BIND_Q_TO_ULP_BIT);
}
if (is_chip_be2_be3r(phba)) {
AMAP_SET_BITS(struct amap_be_default_pdu_context,
rx_pdid, ctxt, 0);
AMAP_SET_BITS(struct amap_be_default_pdu_context,
rx_pdid_valid, ctxt, 1);
AMAP_SET_BITS(struct amap_be_default_pdu_context,
pci_func_id, ctxt, PCI_FUNC(ctrl->pdev->devfn));
AMAP_SET_BITS(struct amap_be_default_pdu_context,
ring_size, ctxt,
be_encoded_q_len(length /
sizeof(struct phys_addr)));
AMAP_SET_BITS(struct amap_be_default_pdu_context,
default_buffer_size, ctxt, entry_size);
AMAP_SET_BITS(struct amap_be_default_pdu_context,
cq_id_recv, ctxt, cq->id);
} else {
AMAP_SET_BITS(struct amap_default_pdu_context_ext,
rx_pdid, ctxt, 0);
AMAP_SET_BITS(struct amap_default_pdu_context_ext,
rx_pdid_valid, ctxt, 1);
AMAP_SET_BITS(struct amap_default_pdu_context_ext,
ring_size, ctxt,
be_encoded_q_len(length /
sizeof(struct phys_addr)));
AMAP_SET_BITS(struct amap_default_pdu_context_ext,
default_buffer_size, ctxt, entry_size);
AMAP_SET_BITS(struct amap_default_pdu_context_ext,
cq_id_recv, ctxt, cq->id);
}
be_dws_cpu_to_le(ctxt, sizeof(req->context));
be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
status = be_mbox_notify(ctrl);
if (!status) {
struct be_ring *defq_ring;
struct be_defq_create_resp *resp = embedded_payload(wrb);
dq->id = le16_to_cpu(resp->id);
dq->created = true;
if (is_header)
defq_ring = &phba->phwi_ctrlr->default_pdu_hdr[ulp_num];
else
defq_ring = &phba->phwi_ctrlr->
default_pdu_data[ulp_num];
defq_ring->id = dq->id;
if (!phba->fw_config.dual_ulp_aware) {
defq_ring->ulp_num = BEISCSI_ULP0;
defq_ring->doorbell_offset = DB_RXULP0_OFFSET;
} else {
defq_ring->ulp_num = resp->ulp_num;
defq_ring->doorbell_offset = resp->doorbell_offset;
}
}
spin_unlock(&ctrl->mbox_lock);
return status;
}
/**
* be_cmd_wrbq_create()- Create WRBQ
* @ctrl: ptr to ctrl_info
* @q_mem: memory details for the queue
* @wrbq: queue info
* @pwrb_context: ptr to wrb_context
* @ulp_num: ULP on which the WRBQ is to be created
*
* Create WRBQ on the passed ULP_NUM.
*
**/
int be_cmd_wrbq_create(struct be_ctrl_info *ctrl,
struct be_dma_mem *q_mem,
struct be_queue_info *wrbq,
struct hwi_wrb_context *pwrb_context,
uint8_t ulp_num)
{
struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
struct be_wrbq_create_req *req = embedded_payload(wrb);
struct be_wrbq_create_resp *resp = embedded_payload(wrb);
struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
int status;
spin_lock(&ctrl->mbox_lock);
memset(wrb, 0, sizeof(*wrb));
be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
OPCODE_COMMON_ISCSI_WRBQ_CREATE, sizeof(*req));
req->num_pages = PAGES_4K_SPANNED(q_mem->va, q_mem->size);
if (phba->fw_config.dual_ulp_aware) {
req->ulp_num = ulp_num;
req->dua_feature |= (1 << BEISCSI_DUAL_ULP_AWARE_BIT);
req->dua_feature |= (1 << BEISCSI_BIND_Q_TO_ULP_BIT);
}
be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
status = be_mbox_notify(ctrl);
if (!status) {
wrbq->id = le16_to_cpu(resp->cid);
wrbq->created = true;
pwrb_context->cid = wrbq->id;
if (!phba->fw_config.dual_ulp_aware) {
pwrb_context->doorbell_offset = DB_TXULP0_OFFSET;
pwrb_context->ulp_num = BEISCSI_ULP0;
} else {
pwrb_context->ulp_num = resp->ulp_num;
pwrb_context->doorbell_offset = resp->doorbell_offset;
}
}
spin_unlock(&ctrl->mbox_lock);
return status;
}
int be_cmd_iscsi_post_template_hdr(struct be_ctrl_info *ctrl,
struct be_dma_mem *q_mem)
{
struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
struct be_post_template_pages_req *req = embedded_payload(wrb);
int status;
spin_lock(&ctrl->mbox_lock);
memset(wrb, 0, sizeof(*wrb));
be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
OPCODE_COMMON_ADD_TEMPLATE_HEADER_BUFFERS,
sizeof(*req));
req->num_pages = PAGES_4K_SPANNED(q_mem->va, q_mem->size);
req->type = BEISCSI_TEMPLATE_HDR_TYPE_ISCSI;
be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
status = be_mbox_notify(ctrl);
spin_unlock(&ctrl->mbox_lock);
return status;
}
int be_cmd_iscsi_remove_template_hdr(struct be_ctrl_info *ctrl)
{
struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
struct be_remove_template_pages_req *req = embedded_payload(wrb);
int status;
spin_lock(&ctrl->mbox_lock);
memset(wrb, 0, sizeof(*wrb));
be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
OPCODE_COMMON_REMOVE_TEMPLATE_HEADER_BUFFERS,
sizeof(*req));
req->type = BEISCSI_TEMPLATE_HDR_TYPE_ISCSI;
status = be_mbox_notify(ctrl);
spin_unlock(&ctrl->mbox_lock);
return status;
}
int be_cmd_iscsi_post_sgl_pages(struct be_ctrl_info *ctrl,
struct be_dma_mem *q_mem,
u32 page_offset, u32 num_pages)
{
struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
struct be_post_sgl_pages_req *req = embedded_payload(wrb);
struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
int status;
unsigned int curr_pages;
u32 internal_page_offset = 0;
u32 temp_num_pages = num_pages;
if (num_pages == 0xff)
num_pages = 1;
spin_lock(&ctrl->mbox_lock);
do {
memset(wrb, 0, sizeof(*wrb));
be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
OPCODE_COMMON_ISCSI_CFG_POST_SGL_PAGES,
sizeof(*req));
curr_pages = BE_NUMBER_OF_FIELD(struct be_post_sgl_pages_req,
pages);
req->num_pages = min(num_pages, curr_pages);
req->page_offset = page_offset;
be_cmd_page_addrs_prepare(req->pages, req->num_pages, q_mem);
q_mem->dma = q_mem->dma + (req->num_pages * PAGE_SIZE);
internal_page_offset += req->num_pages;
page_offset += req->num_pages;
num_pages -= req->num_pages;
if (temp_num_pages == 0xff)
req->num_pages = temp_num_pages;
status = be_mbox_notify(ctrl);
if (status) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BC_%d : FW CMD to map iscsi frags failed.\n");
goto error;
}
} while (num_pages > 0);
error:
spin_unlock(&ctrl->mbox_lock);
if (status != 0)
beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL);
return status;
}
int beiscsi_cmd_reset_function(struct beiscsi_hba *phba)
{
struct be_ctrl_info *ctrl = &phba->ctrl;
struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
struct be_post_sgl_pages_req *req = embedded_payload(wrb);
int status;
spin_lock(&ctrl->mbox_lock);
req = embedded_payload(wrb);
be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
OPCODE_COMMON_FUNCTION_RESET, sizeof(*req));
status = be_mbox_notify_wait(phba);
spin_unlock(&ctrl->mbox_lock);
return status;
}
/**
* be_cmd_set_vlan()- Configure VLAN paramters on the adapter
* @phba: device priv structure instance
* @vlan_tag: TAG to be set
*
* Set the VLAN_TAG for the adapter or Disable VLAN on adapter
*
* returns
* TAG for the MBX Cmd
* **/
int be_cmd_set_vlan(struct beiscsi_hba *phba,
uint16_t vlan_tag)
{
unsigned int tag = 0;
struct be_mcc_wrb *wrb;
struct be_cmd_set_vlan_req *req;
struct be_ctrl_info *ctrl = &phba->ctrl;
spin_lock(&ctrl->mbox_lock);
tag = alloc_mcc_tag(phba);
if (!tag) {
spin_unlock(&ctrl->mbox_lock);
return tag;
}
wrb = wrb_from_mccq(phba);
req = embedded_payload(wrb);
wrb->tag0 |= tag;
be_wrb_hdr_prepare(wrb, sizeof(*wrb), true, 0);
be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
OPCODE_COMMON_ISCSI_NTWK_SET_VLAN,
sizeof(*req));
req->interface_hndl = phba->interface_handle;
req->vlan_priority = vlan_tag;
be_mcc_notify(phba);
spin_unlock(&ctrl->mbox_lock);
return tag;
}
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