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be2iscsi: Remove redundant MCC processing code 

be_mcc_compl_process_isr is removed. MCC CQ processing is done only in
beiscsi_process_mcc_cq and MCC CQE processing is done only in
beiscsi_process_mcc_compl.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Jitendra Bhivare 2016-02-04 15:49:11 +05:30 committed by Martin K. Petersen
parent 67296ad92d
commit 2e4e8f6574
5 changed files with 68 additions and 116 deletions
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165
drivers/scsi/be2iscsi/be_cmds.c
View File

@ -328,76 +328,6 @@ static int be_mcc_compl_process(struct be_ctrl_info *ctrl,
return 0;
}
int be_mcc_compl_process_isr(struct be_ctrl_info *ctrl,
struct be_mcc_compl *compl)
{
struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
u16 compl_status, extd_status;
struct be_dma_mem *tag_mem;
unsigned int tag, wrb_idx;
be_dws_le_to_cpu(compl, 4);
tag = (compl->tag0 & MCC_Q_CMD_TAG_MASK);
wrb_idx = (compl->tag0 & CQE_STATUS_WRB_MASK) >> CQE_STATUS_WRB_SHIFT;
if (!test_bit(MCC_TAG_STATE_RUNNING,
&ctrl->ptag_state[tag].tag_state)) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_MBOX |
BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
"BC_%d : MBX cmd completed but not posted\n");
return 0;
}
if (test_bit(MCC_TAG_STATE_TIMEOUT,
&ctrl->ptag_state[tag].tag_state)) {
beiscsi_log(phba, KERN_WARNING,
BEISCSI_LOG_MBOX | BEISCSI_LOG_INIT |
BEISCSI_LOG_CONFIG,
"BC_%d : MBX Completion for timeout Command from FW\n");
/**
* Check for the size before freeing resource.
* Only for non-embedded cmd, PCI resource is allocated.
**/
tag_mem = &ctrl->ptag_state[tag].tag_mem_state;
if (tag_mem->size)
pci_free_consistent(ctrl->pdev, tag_mem->size,
tag_mem->va, tag_mem->dma);
free_mcc_tag(ctrl, tag);
return 0;
}
compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) &
CQE_STATUS_COMPL_MASK;
extd_status = (compl->status >> CQE_STATUS_EXTD_SHIFT) &
CQE_STATUS_EXTD_MASK;
/* The ctrl.mcc_tag_status[tag] is filled with
* [31] = valid, [30:24] = Rsvd, [23:16] = wrb, [15:8] = extd_status,
* [7:0] = compl_status
*/
ctrl->mcc_tag_status[tag] = CQE_VALID_MASK;
ctrl->mcc_tag_status[tag] |= (wrb_idx << CQE_STATUS_WRB_SHIFT);
ctrl->mcc_tag_status[tag] |= (extd_status << CQE_STATUS_ADDL_SHIFT) &
CQE_STATUS_ADDL_MASK;
ctrl->mcc_tag_status[tag] |= (compl_status & CQE_STATUS_MASK);
/* write ordering implied in wake_up_interruptible */
clear_bit(MCC_TAG_STATE_RUNNING, &ctrl->ptag_state[tag].tag_state);
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;
}
/**
* beiscsi_fail_session(): Closing session with appropriate error
* @cls_session: ptr to session
@ -528,27 +458,65 @@ void beiscsi_process_async_event(struct beiscsi_hba *phba,
evt_code, compl->status, compl->flags);
}
int beiscsi_process_mcc(struct beiscsi_hba *phba)
int beiscsi_process_mcc_compl(struct be_ctrl_info *ctrl,
struct be_mcc_compl *compl)
{
struct be_mcc_compl *compl;
int num = 0, status = 0;
struct be_ctrl_info *ctrl = &phba->ctrl;
struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
u16 compl_status, extd_status;
struct be_dma_mem *tag_mem;
unsigned int tag, wrb_idx;
while ((compl = be_mcc_compl_get(phba))) {
if (compl->flags & CQE_FLAGS_ASYNC_MASK) {
beiscsi_process_async_event(phba, compl);
} 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++;
/**
* Just swap the status to host endian; mcc tag is opaquely copied
* from mcc_wrb
*/
be_dws_le_to_cpu(compl, 4);
tag = (compl->tag0 & MCC_Q_CMD_TAG_MASK);
wrb_idx = (compl->tag0 & CQE_STATUS_WRB_MASK) >> CQE_STATUS_WRB_SHIFT;
if (!test_bit(MCC_TAG_STATE_RUNNING,
&ctrl->ptag_state[tag].tag_state)) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_MBOX |
BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
"BC_%d : MBX cmd completed but not posted\n");
return 0;
}
if (num)
hwi_ring_cq_db(phba, phba->ctrl.mcc_obj.cq.id, num, 1);
if (test_bit(MCC_TAG_STATE_TIMEOUT, &ctrl->ptag_state[tag].tag_state)) {
beiscsi_log(phba, KERN_WARNING,
BEISCSI_LOG_MBOX | BEISCSI_LOG_INIT |
BEISCSI_LOG_CONFIG,
"BC_%d : MBX Completion for timeout Command from FW\n");
/**
* Check for the size before freeing resource.
* Only for non-embedded cmd, PCI resource is allocated.
**/
tag_mem = &ctrl->ptag_state[tag].tag_mem_state;
if (tag_mem->size)
pci_free_consistent(ctrl->pdev, tag_mem->size,
tag_mem->va, tag_mem->dma);
free_mcc_tag(ctrl, tag);
return 0;
}
return status;
compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) &
CQE_STATUS_COMPL_MASK;
extd_status = (compl->status >> CQE_STATUS_EXTD_SHIFT) &
CQE_STATUS_EXTD_MASK;
/* The ctrl.mcc_tag_status[tag] is filled with
* [31] = valid, [30:24] = Rsvd, [23:16] = wrb, [15:8] = extd_status,
* [7:0] = compl_status
*/
ctrl->mcc_tag_status[tag] = CQE_VALID_MASK;
ctrl->mcc_tag_status[tag] |= (wrb_idx << CQE_STATUS_WRB_SHIFT);
ctrl->mcc_tag_status[tag] |= (extd_status << CQE_STATUS_ADDL_SHIFT) &
CQE_STATUS_ADDL_MASK;
ctrl->mcc_tag_status[tag] |= (compl_status & CQE_STATUS_MASK);
/* write ordering forced in wake_up_interruptible */
clear_bit(MCC_TAG_STATE_RUNNING, &ctrl->ptag_state[tag].tag_state);
wake_up_interruptible(&ctrl->mcc_wait[tag]);
return 0;
}
/*
@ -562,16 +530,15 @@ int beiscsi_process_mcc(struct beiscsi_hba *phba)
* Failure: Non-Zero
*
**/
static int be_mcc_wait_compl(struct beiscsi_hba *phba)
int be_mcc_compl_poll(struct beiscsi_hba *phba, unsigned int tag)
{
int i, status;
int i;
for (i = 0; i < mcc_timeout; i++) {
if (beiscsi_error(phba))
return -EIO;
status = beiscsi_process_mcc(phba);
if (status)
return status;
beiscsi_process_mcc_cq(phba);
if (atomic_read(&phba->ctrl.mcc_obj.q.used) == 0)
break;
@ -588,22 +555,6 @@ static int be_mcc_wait_compl(struct beiscsi_hba *phba)
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, unsigned int tag)
{
be_mcc_notify(phba, tag);
return be_mcc_wait_compl(phba);
}
/*
* be_mbox_db_ready_wait()- Check ready status
* @ctrl: Function specific MBX data structure

7
drivers/scsi/be2iscsi/be_cmds.h
View File

@ -741,13 +741,14 @@ int be_cmd_fw_uninit(struct be_ctrl_info *ctrl);
struct be_mcc_wrb *wrb_from_mbox(struct be_dma_mem *mbox_mem);
struct be_mcc_wrb *wrb_from_mccq(struct beiscsi_hba *phba);
int be_mcc_notify_wait(struct beiscsi_hba *phba, unsigned int tag);
int be_mcc_compl_poll(struct beiscsi_hba *phba, unsigned int tag);
void be_mcc_notify(struct beiscsi_hba *phba, unsigned int tag);
unsigned int alloc_mcc_tag(struct beiscsi_hba *phba);
void beiscsi_process_async_event(struct beiscsi_hba *phba,
struct be_mcc_compl *compl);
int be_mcc_compl_process_isr(struct be_ctrl_info *ctrl,
struct be_mcc_compl *compl);
int beiscsi_process_mcc_compl(struct be_ctrl_info *ctrl,
struct be_mcc_compl *compl);
int be_mbox_notify(struct be_ctrl_info *ctrl);

8
drivers/scsi/be2iscsi/be_main.c
View File

@ -2028,7 +2028,7 @@ static void hwi_process_default_pdu_ring(struct beiscsi_conn *beiscsi_conn,
phwi_ctrlr, cri_index));
}
static void beiscsi_process_mcc_isr(struct beiscsi_hba *phba)
void beiscsi_process_mcc_cq(struct beiscsi_hba *phba)
{
struct be_queue_info *mcc_cq;
struct be_mcc_compl *mcc_compl;
@ -2038,7 +2038,6 @@ static void beiscsi_process_mcc_isr(struct beiscsi_hba *phba)
mcc_compl = queue_tail_node(mcc_cq);
mcc_compl->flags = le32_to_cpu(mcc_compl->flags);
while (mcc_compl->flags & CQE_FLAGS_VALID_MASK) {
if (num_processed >= 32) {
hwi_ring_cq_db(phba, mcc_cq->id,
num_processed, 0);
@ -2047,7 +2046,7 @@ static void beiscsi_process_mcc_isr(struct beiscsi_hba *phba)
if (mcc_compl->flags & CQE_FLAGS_ASYNC_MASK) {
beiscsi_process_async_event(phba, mcc_compl);
} else if (mcc_compl->flags & CQE_FLAGS_COMPLETED_MASK) {
be_mcc_compl_process_isr(&phba->ctrl, mcc_compl);
beiscsi_process_mcc_compl(&phba->ctrl, mcc_compl);
atomic_dec(&phba->ctrl.mcc_obj.q.used);
}
@ -2060,7 +2059,6 @@ static void beiscsi_process_mcc_isr(struct beiscsi_hba *phba)
if (num_processed > 0)
hwi_ring_cq_db(phba, mcc_cq->id, num_processed, 1);
}
/**
@ -2269,7 +2267,7 @@ void beiscsi_process_all_cqs(struct work_struct *work)
spin_lock_irqsave(&phba->isr_lock, flags);
pbe_eq->todo_mcc_cq = false;
spin_unlock_irqrestore(&phba->isr_lock, flags);
beiscsi_process_mcc_isr(phba);
beiscsi_process_mcc_cq(phba);
}
if (pbe_eq->todo_cq) {

1
drivers/scsi/be2iscsi/be_main.h
View File

@ -853,6 +853,7 @@ void hwi_ring_cq_db(struct beiscsi_hba *phba,
unsigned char rearm);
unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq, int budget);
void beiscsi_process_mcc_cq(struct beiscsi_hba *phba);
static inline bool beiscsi_error(struct beiscsi_hba *phba)
{

3
drivers/scsi/be2iscsi/be_mgmt.c
View File

@ -678,7 +678,8 @@ int mgmt_epfw_cleanup(struct beiscsi_hba *phba, unsigned short ulp_num)
req->hdr_ring_id = cpu_to_le16(HWI_GET_DEF_HDRQ_ID(phba, ulp_num));
req->data_ring_id = cpu_to_le16(HWI_GET_DEF_BUFQ_ID(phba, ulp_num));
status = be_mcc_notify_wait(phba, tag);
be_mcc_notify(phba, tag);
status = be_mcc_compl_poll(phba, tag);
if (status)
beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
"BG_%d : mgmt_epfw_cleanup , FAILED\n");