[SCSI] bfa: IOC bug fixes.
- Add logic to handle the case where PCI mapping goes away when
IOCPF state machine is waiting for semaphore.
- Added logic to unlock hw semaphore if the previos FW boot was
from flash based and the current FW initialization attempt is from OS.
- Added fix to update hbfails and hb_count stats during hwerror event.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/bfa/bfa_ioc.c b/drivers/scsi/bfa/bfa_ioc.c
index 2c575f5..931bf97 100644
--- a/drivers/scsi/bfa/bfa_ioc.c
+++ b/drivers/scsi/bfa/bfa_ioc.c
@@ -112,6 +112,7 @@
IOC_E_HBFAIL = 9, /* heartbeat failure */
IOC_E_HWERROR = 10, /* hardware error interrupt */
IOC_E_TIMEOUT = 11, /* timeout */
+ IOC_E_HWFAILED = 12, /* PCI mapping failure notice */
};
bfa_fsm_state_decl(bfa_ioc, uninit, struct bfa_ioc_s, enum ioc_event);
@@ -123,6 +124,7 @@
bfa_fsm_state_decl(bfa_ioc, fail, struct bfa_ioc_s, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, disabling, struct bfa_ioc_s, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, disabled, struct bfa_ioc_s, enum ioc_event);
+bfa_fsm_state_decl(bfa_ioc, hwfail, struct bfa_ioc_s, enum ioc_event);
static struct bfa_sm_table_s ioc_sm_table[] = {
{BFA_SM(bfa_ioc_sm_uninit), BFA_IOC_UNINIT},
@@ -134,6 +136,7 @@
{BFA_SM(bfa_ioc_sm_fail), BFA_IOC_FAIL},
{BFA_SM(bfa_ioc_sm_disabling), BFA_IOC_DISABLING},
{BFA_SM(bfa_ioc_sm_disabled), BFA_IOC_DISABLED},
+ {BFA_SM(bfa_ioc_sm_hwfail), BFA_IOC_HWFAIL},
};
/*
@@ -176,6 +179,7 @@
IOCPF_E_GETATTRFAIL = 9, /* init fail notice by ioc sm */
IOCPF_E_SEMLOCKED = 10, /* h/w semaphore is locked */
IOCPF_E_TIMEOUT = 11, /* f/w response timeout */
+ IOCPF_E_SEM_ERROR = 12, /* h/w sem mapping error */
};
/*
@@ -322,6 +326,11 @@
bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_INITFAIL);
break;
+ case IOC_E_HWFAILED:
+ ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
+ bfa_fsm_set_state(ioc, bfa_ioc_sm_hwfail);
+ break;
+
case IOC_E_DISABLE:
bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
break;
@@ -465,6 +474,11 @@
bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_FAIL);
break;
+ case IOC_E_HWFAILED:
+ bfa_fsm_set_state(ioc, bfa_ioc_sm_hwfail);
+ bfa_ioc_disable_comp(ioc);
+ break;
+
default:
bfa_sm_fault(ioc, event);
}
@@ -534,6 +548,11 @@
bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_INITFAIL);
break;
+ case IOC_E_HWFAILED:
+ ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
+ bfa_fsm_set_state(ioc, bfa_ioc_sm_hwfail);
+ break;
+
case IOC_E_ENABLE:
break;
@@ -591,6 +610,35 @@
}
}
+static void
+bfa_ioc_sm_hwfail_entry(struct bfa_ioc_s *ioc)
+{
+ bfa_trc(ioc, 0);
+}
+
+static void
+bfa_ioc_sm_hwfail(struct bfa_ioc_s *ioc, enum ioc_event event)
+{
+ bfa_trc(ioc, event);
+
+ switch (event) {
+ case IOC_E_ENABLE:
+ ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
+ break;
+
+ case IOC_E_DISABLE:
+ ioc->cbfn->disable_cbfn(ioc->bfa);
+ break;
+
+ case IOC_E_DETACH:
+ bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
+ break;
+
+ default:
+ bfa_sm_fault(ioc, event);
+ }
+}
+
/*
* IOCPF State Machine
*/
@@ -634,6 +682,28 @@
static void
bfa_iocpf_sm_fwcheck_entry(struct bfa_iocpf_s *iocpf)
{
+ struct bfi_ioc_image_hdr_s fwhdr;
+ u32 fwstate = readl(iocpf->ioc->ioc_regs.ioc_fwstate);
+
+ /* h/w sem init */
+ if (fwstate == BFI_IOC_UNINIT)
+ goto sem_get;
+
+ bfa_ioc_fwver_get(iocpf->ioc, &fwhdr);
+
+ if (swab32(fwhdr.exec) == BFI_FWBOOT_TYPE_NORMAL)
+ goto sem_get;
+
+ bfa_trc(iocpf->ioc, fwstate);
+ bfa_trc(iocpf->ioc, fwhdr.exec);
+ writel(BFI_IOC_UNINIT, iocpf->ioc->ioc_regs.ioc_fwstate);
+
+ /*
+ * Try to lock and then unlock the semaphore.
+ */
+ readl(iocpf->ioc->ioc_regs.ioc_sem_reg);
+ writel(1, iocpf->ioc->ioc_regs.ioc_sem_reg);
+sem_get:
bfa_ioc_hw_sem_get(iocpf->ioc);
}
@@ -664,6 +734,11 @@
}
break;
+ case IOCPF_E_SEM_ERROR:
+ bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail);
+ bfa_fsm_send_event(ioc, IOC_E_HWFAILED);
+ break;
+
case IOCPF_E_DISABLE:
bfa_sem_timer_stop(ioc);
bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
@@ -757,6 +832,11 @@
}
break;
+ case IOCPF_E_SEM_ERROR:
+ bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail);
+ bfa_fsm_send_event(ioc, IOC_E_HWFAILED);
+ break;
+
case IOCPF_E_DISABLE:
bfa_sem_timer_stop(ioc);
bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
@@ -957,6 +1037,11 @@
bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabled);
break;
+ case IOCPF_E_SEM_ERROR:
+ bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail);
+ bfa_fsm_send_event(ioc, IOC_E_HWFAILED);
+ break;
+
case IOCPF_E_FAIL:
break;
@@ -1000,6 +1085,7 @@
static void
bfa_iocpf_sm_initfail_sync_entry(struct bfa_iocpf_s *iocpf)
{
+ bfa_ioc_debug_save_ftrc(iocpf->ioc);
bfa_ioc_hw_sem_get(iocpf->ioc);
}
@@ -1022,6 +1108,11 @@
bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail);
break;
+ case IOCPF_E_SEM_ERROR:
+ bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail);
+ bfa_fsm_send_event(ioc, IOC_E_HWFAILED);
+ break;
+
case IOCPF_E_DISABLE:
bfa_sem_timer_stop(ioc);
bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
@@ -1044,6 +1135,7 @@
static void
bfa_iocpf_sm_initfail_entry(struct bfa_iocpf_s *iocpf)
{
+ bfa_trc(iocpf->ioc, 0);
}
/*
@@ -1113,6 +1205,11 @@
}
break;
+ case IOCPF_E_SEM_ERROR:
+ bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail);
+ bfa_fsm_send_event(ioc, IOC_E_HWFAILED);
+ break;
+
case IOCPF_E_DISABLE:
bfa_sem_timer_stop(ioc);
bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
@@ -1129,6 +1226,7 @@
static void
bfa_iocpf_sm_fail_entry(struct bfa_iocpf_s *iocpf)
{
+ bfa_trc(iocpf->ioc, 0);
}
/*
@@ -1195,7 +1293,6 @@
if (!(r32 & 1))
return BFA_TRUE;
- WARN_ON(cnt >= BFA_SEM_SPINCNT);
return BFA_FALSE;
}
@@ -1209,6 +1306,11 @@
* will return 1. Semaphore is released by writing 1 to the register
*/
r32 = readl(ioc->ioc_regs.ioc_sem_reg);
+ if (r32 == ~0) {
+ WARN_ON(r32 == ~0);
+ bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_SEM_ERROR);
+ return;
+ }
if (!(r32 & 1)) {
bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_SEMLOCKED);
return;
@@ -1617,6 +1719,7 @@
attr->adapter_prop = be32_to_cpu(attr->adapter_prop);
attr->card_type = be32_to_cpu(attr->card_type);
attr->maxfrsize = be16_to_cpu(attr->maxfrsize);
+ ioc->fcmode = (attr->port_mode == BFI_PORT_MODE_FC);
bfa_fsm_send_event(ioc, IOC_E_FWRSP_GETATTR);
}
@@ -1733,6 +1836,7 @@
/*
* release semaphore.
*/
+ readl(ioc->ioc_regs.ioc_init_sem_reg);
writel(1, ioc->ioc_regs.ioc_init_sem_reg);
bfa_trc(ioc, pgnum);
@@ -1789,6 +1893,7 @@
/*
* release semaphore.
*/
+ readl(ioc->ioc_regs.ioc_init_sem_reg);
writel(1, ioc->ioc_regs.ioc_init_sem_reg);
bfa_trc(ioc, pgnum);
return BFA_STATUS_OK;
@@ -1840,6 +1945,7 @@
/*
* release semaphore.
*/
+ readl(ioc->ioc_regs.ioc_init_sem_reg);
writel(1, ioc->ioc_regs.ioc_init_sem_reg);
return BFA_STATUS_OK;
@@ -2232,6 +2338,8 @@
void
bfa_ioc_error_isr(struct bfa_ioc_s *ioc)
{
+ bfa_ioc_stats(ioc, ioc_hbfails);
+ ioc->stats.hb_count = ioc->hb_count;
bfa_fsm_send_event(ioc, IOC_E_HWERROR);
}
@@ -2354,15 +2462,12 @@
enum bfa_ioc_type_e
bfa_ioc_get_type(struct bfa_ioc_s *ioc)
{
- enum bfi_port_mode mode;
-
if (ioc->clscode == BFI_PCIFN_CLASS_ETH)
return BFA_IOC_TYPE_LL;
WARN_ON(ioc->clscode != BFI_PCIFN_CLASS_FC);
- mode = (ioc->port_id == 0) ? ioc->port0_mode : ioc->port1_mode;
- return (mode == BFI_PORT_MODE_FC)
+ return (ioc->attr->port_mode == BFI_PORT_MODE_FC)
? BFA_IOC_TYPE_FC : BFA_IOC_TYPE_FCoE;
}
@@ -2739,6 +2844,7 @@
bfa_ioc_recover(struct bfa_ioc_s *ioc)
{
bfa_ioc_stats(ioc, ioc_hbfails);
+ ioc->stats.hb_count = ioc->hb_count;
bfa_fsm_send_event(ioc, IOC_E_HBFAIL);
}