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lpfc: fix IP Reset processing - wait for RDY before proceeding 

Fix IP Reset processing - wait for RDY before proceeding

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: Dick Kennedy <dick.kennedy@emulex.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
James Smart 2014-09-03 12:57:08 -04:00 committed by Christoph Hellwig
parent c62321978f
commit 2f6fa2c911
1 changed files with 47 additions and 62 deletions
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109
drivers/scsi/lpfc/lpfc_init.c
View File

@ -7903,7 +7903,8 @@ lpfc_pci_function_reset(struct lpfc_hba *phba)
LPFC_MBOXQ_t *mboxq;
uint32_t rc = 0, if_type;
uint32_t shdr_status, shdr_add_status;
uint32_t rdy_chk, num_resets = 0, reset_again = 0;
uint32_t rdy_chk;
uint32_t port_reset = 0;
union lpfc_sli4_cfg_shdr *shdr;
struct lpfc_register reg_data;
uint16_t devid;
@ -7943,9 +7944,42 @@ lpfc_pci_function_reset(struct lpfc_hba *phba)
}
break;
case LPFC_SLI_INTF_IF_TYPE_2:
for (num_resets = 0;
num_resets < MAX_IF_TYPE_2_RESETS;
num_resets++) {
wait:
/*
* Poll the Port Status Register and wait for RDY for
* up to 30 seconds. If the port doesn't respond, treat
* it as an error.
*/
for (rdy_chk = 0; rdy_chk < 3000; rdy_chk++) {
if (lpfc_readl(phba->sli4_hba.u.if_type2.
STATUSregaddr, &reg_data.word0)) {
rc = -ENODEV;
goto out;
}
if (bf_get(lpfc_sliport_status_rdy, &reg_data))
break;
msleep(20);
}
if (!bf_get(lpfc_sliport_status_rdy, &reg_data)) {
phba->work_status[0] = readl(
phba->sli4_hba.u.if_type2.ERR1regaddr);
phba->work_status[1] = readl(
phba->sli4_hba.u.if_type2.ERR2regaddr);
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2890 Port not ready, port status reg "
"0x%x error 1=0x%x, error 2=0x%x\n",
reg_data.word0,
phba->work_status[0],
phba->work_status[1]);
rc = -ENODEV;
goto out;
}
if (!port_reset) {
/*
* Reset the port now
*/
reg_data.word0 = 0;
bf_set(lpfc_sliport_ctrl_end, &reg_data,
LPFC_SLIPORT_LITTLE_ENDIAN);
@ -7956,64 +7990,16 @@ lpfc_pci_function_reset(struct lpfc_hba *phba)
/* flush */
pci_read_config_word(phba->pcidev,
PCI_DEVICE_ID, &devid);
/*
* Poll the Port Status Register and wait for RDY for
* up to 10 seconds. If the port doesn't respond, treat
* it as an error. If the port responds with RN, start
* the loop again.
*/
for (rdy_chk = 0; rdy_chk < 1000; rdy_chk++) {
msleep(10);
if (lpfc_readl(phba->sli4_hba.u.if_type2.
STATUSregaddr, &reg_data.word0)) {
rc = -ENODEV;
goto out;
}
if (bf_get(lpfc_sliport_status_rn, &reg_data))
reset_again++;
if (bf_get(lpfc_sliport_status_rdy, &reg_data))
break;
}
/*
* If the port responds to the init request with
* reset needed, delay for a bit and restart the loop.
*/
if (reset_again && (rdy_chk < 1000)) {
msleep(10);
reset_again = 0;
continue;
}
/* Detect any port errors. */
if ((bf_get(lpfc_sliport_status_err, &reg_data)) ||
(rdy_chk >= 1000)) {
phba->work_status[0] = readl(
phba->sli4_hba.u.if_type2.ERR1regaddr);
phba->work_status[1] = readl(
phba->sli4_hba.u.if_type2.ERR2regaddr);
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2890 Port error detected during port "
"reset(%d): wait_tmo:%d ms, "
"port status reg 0x%x, "
"error 1=0x%x, error 2=0x%x\n",
num_resets, rdy_chk*10,
reg_data.word0,
phba->work_status[0],
phba->work_status[1]);
rc = -ENODEV;
}
/*
* Terminate the outer loop provided the Port indicated
* ready within 10 seconds.
*/
if (rdy_chk < 1000)
break;
port_reset = 1;
msleep(20);
goto wait;
} else if (bf_get(lpfc_sliport_status_rn, &reg_data)) {
rc = -ENODEV;
goto out;
}
/* delay driver action following IF_TYPE_2 function reset */
msleep(100);
break;
case LPFC_SLI_INTF_IF_TYPE_1:
default:
break;
@ -8021,11 +8007,10 @@ lpfc_pci_function_reset(struct lpfc_hba *phba)
out:
/* Catch the not-ready port failure after a port reset. */
if (num_resets >= MAX_IF_TYPE_2_RESETS) {
if (rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"3317 HBA not functional: IP Reset Failed "
"after (%d) retries, try: "
"echo fw_reset > board_mode\n", num_resets);
"try: echo fw_reset > board_mode\n");
rc = -ENODEV;
}