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path: root/drivers/scsi/be2iscsi/be_cmds.c
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Diffstat (limited to 'drivers/scsi/be2iscsi/be_cmds.c')
-rw-r--r--drivers/scsi/be2iscsi/be_cmds.c188
1 files changed, 158 insertions, 30 deletions
diff --git a/drivers/scsi/be2iscsi/be_cmds.c b/drivers/scsi/be2iscsi/be_cmds.c
index 977b7532a01e..352fc53e91b8 100644
--- a/drivers/scsi/be2iscsi/be_cmds.c
+++ b/drivers/scsi/be2iscsi/be_cmds.c
@@ -133,6 +133,84 @@ unsigned int alloc_mcc_tag(struct beiscsi_hba *phba)
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_queue_info *mccq = &phba->ctrl.mcc_obj.q;
+
+ /* 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 = -EAGAIN;
+ 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);
+ rc = -EAGAIN;
+ }
+
+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);
@@ -168,11 +246,24 @@ 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);
be_dws_le_to_cpu(compl, 4);
@@ -184,7 +275,10 @@ static int be_mcc_compl_process(struct be_ctrl_info *ctrl,
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
- "BC_%d : error in cmd completion: status(compl/extd)=%d/%d\n",
+ "BC_%d : error in cmd completion: "
+ "Subsystem : %d Opcode : %d "
+ "status(compl/extd)=%d/%d\n",
+ hdr->subsystem, hdr->opcode,
compl_status, extd_status);
return -EBUSY;
@@ -314,11 +408,24 @@ int beiscsi_process_mcc(struct beiscsi_hba *phba)
return status;
}
-/* Wait till no more pending mcc requests are present */
+/*
+ * 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 (phba->fw_timeout)
+ return -EIO;
+
status = beiscsi_process_mcc(phba);
if (status)
return status;
@@ -330,51 +437,80 @@ static int be_mcc_wait_compl(struct beiscsi_hba *phba)
if (i == mcc_timeout) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
- "BC_%d : mccq poll timed out\n");
-
+ "BC_%d : FW Timed Out\n");
+ phba->fw_timeout = true;
return -EBUSY;
}
return 0;
}
-/* Notify MCC requests and wait for completion */
+/*
+ * 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 long_delay 2000
void __iomem *db = ctrl->db + MPU_MAILBOX_DB_OFFSET;
- int cnt = 0, wait = 5; /* in usecs */
+ struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
+ int wait = 0;
u32 ready;
do {
+ if (phba->fw_timeout)
+ return -EIO;
+
ready = ioread32(db) & MPU_MAILBOX_DB_RDY_MASK;
if (ready)
break;
- if (cnt > 12000000) {
- struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
+ if (wait > BEISCSI_HOST_MBX_TIMEOUT) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
- "BC_%d : mbox_db poll timed out\n");
-
+ "BC_%d : FW Timed Out\n");
+ phba->fw_timeout = true;
return -EBUSY;
}
- if (cnt > 50) {
- wait = long_delay;
- mdelay(long_delay / 1000);
- } else
- udelay(wait);
- cnt += wait;
+ mdelay(1);
+ wait++;
} while (true);
return 0;
}
+/*
+ * 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;
@@ -391,13 +527,9 @@ int be_mbox_notify(struct be_ctrl_info *ctrl)
iowrite32(val, db);
status = be_mbox_db_ready_wait(ctrl);
- if (status != 0) {
- beiscsi_log(phba, KERN_ERR,
- BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
- "BC_%d : be_mbox_db_ready_wait failed\n");
-
+ if (status)
return status;
- }
+
val = 0;
val &= ~MPU_MAILBOX_DB_RDY_MASK;
val &= ~MPU_MAILBOX_DB_HI_MASK;
@@ -405,13 +537,9 @@ int be_mbox_notify(struct be_ctrl_info *ctrl)
iowrite32(val, db);
status = be_mbox_db_ready_wait(ctrl);
- if (status != 0) {
- beiscsi_log(phba, KERN_ERR,
- BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
- "BC_%d : be_mbox_db_ready_wait failed\n");
-
+ if (status)
return status;
- }
+
if (be_mcc_compl_is_new(compl)) {
status = be_mcc_compl_process(ctrl, &mbox->compl);
be_mcc_compl_use(compl);
@@ -499,7 +627,7 @@ void be_cmd_hdr_prepare(struct be_cmd_req_hdr *req_hdr,
req_hdr->opcode = opcode;
req_hdr->subsystem = subsystem;
req_hdr->request_length = cpu_to_le32(cmd_len - sizeof(*req_hdr));
- req_hdr->timeout = 120;
+ req_hdr->timeout = BEISCSI_FW_MBX_TIMEOUT;
}
static void be_cmd_page_addrs_prepare(struct phys_addr *pages, u32 max_pages,
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-05 05:10:32 +0300