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Date: Mon, 18 Jul 2011 01:22:38 -0700
From: Rasesh Mody <rmody@...cade.com>
To: <davem@...emloft.net>, <netdev@...r.kernel.org>
CC: <adapter_linux_open_src_team@...cade.com>, <dradovan@...cade.com>,
Rasesh Mody <rmody@...cade.com>
Subject: [PATCH 18/45] bna: Implement Polling Mechanism for FW Ready
Change details:
- A poll mechanism replaces the current interrupt based FW READY method.
- The timer based poll routine in IOC will query the ioc_fwstate register
to see if there is a state change in FW, and sends the READY event.
- Removed infrastructure needed to support mbox READY event from fw as well as
IOC code.
Signed-off-by: Rasesh Mody <rmody@...cade.com>
---
drivers/net/bna/bfa_ioc.c | 117 +++++++++++++++-----------------------------
drivers/net/bna/bfa_ioc.h | 5 +-
drivers/net/bna/bfi.h | 11 +----
3 files changed, 45 insertions(+), 88 deletions(-)
diff --git a/drivers/net/bna/bfa_ioc.c b/drivers/net/bna/bfa_ioc.c
index fcc9278..df26a8a 100644
--- a/drivers/net/bna/bfa_ioc.c
+++ b/drivers/net/bna/bfa_ioc.c
@@ -61,6 +61,7 @@ static bool bfa_nw_auto_recover = true;
static void bfa_ioc_hw_sem_get(struct bfa_ioc *ioc);
static void bfa_ioc_hw_sem_get_cancel(struct bfa_ioc *ioc);
static void bfa_ioc_hwinit(struct bfa_ioc *ioc, bool force);
+static void bfa_ioc_poll_fwinit(struct bfa_ioc *ioc);
static void bfa_ioc_send_enable(struct bfa_ioc *ioc);
static void bfa_ioc_send_disable(struct bfa_ioc *ioc);
static void bfa_ioc_send_getattr(struct bfa_ioc *ioc);
@@ -77,7 +78,6 @@ static void bfa_ioc_lpu_stop(struct bfa_ioc *ioc);
static void bfa_ioc_fail_notify(struct bfa_ioc *ioc);
static void bfa_ioc_pf_enabled(struct bfa_ioc *ioc);
static void bfa_ioc_pf_disabled(struct bfa_ioc *ioc);
-static void bfa_ioc_pf_initfailed(struct bfa_ioc *ioc);
static void bfa_ioc_pf_failed(struct bfa_ioc *ioc);
static void bfa_ioc_pf_fwmismatch(struct bfa_ioc *ioc);
static void bfa_ioc_boot(struct bfa_ioc *ioc, u32 boot_type,
@@ -107,11 +107,10 @@ enum ioc_event {
IOC_E_ENABLED = 5, /*!< f/w enabled */
IOC_E_FWRSP_GETATTR = 6, /*!< IOC get attribute response */
IOC_E_DISABLED = 7, /*!< f/w disabled */
- IOC_E_INITFAILED = 8, /*!< failure notice by iocpf sm */
- IOC_E_PFAILED = 9, /*!< failure notice by iocpf sm */
- IOC_E_HBFAIL = 10, /*!< heartbeat failure */
- IOC_E_HWERROR = 11, /*!< hardware error interrupt */
- IOC_E_TIMEOUT = 12, /*!< timeout */
+ IOC_E_PFAILED = 8, /*!< failure notice by iocpf sm */
+ IOC_E_HBFAIL = 9, /*!< heartbeat failure */
+ IOC_E_HWERROR = 10, /*!< hardware error interrupt */
+ IOC_E_TIMEOUT = 11, /*!< timeout */
};
bfa_fsm_state_decl(bfa_ioc, uninit, struct bfa_ioc, enum ioc_event);
@@ -299,7 +298,7 @@ bfa_ioc_sm_enabling(struct bfa_ioc *ioc, enum ioc_event event)
/* !!! fall through !!! */
case IOC_E_HWERROR:
ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
- bfa_fsm_set_state(ioc, bfa_ioc_sm_fail_retry);
+ bfa_fsm_set_state(ioc, bfa_ioc_sm_fail);
if (event != IOC_E_PFAILED)
bfa_iocpf_initfail(ioc);
break;
@@ -351,7 +350,7 @@ bfa_ioc_sm_getattr(struct bfa_ioc *ioc, enum ioc_event event)
/* fall through */
case IOC_E_TIMEOUT:
ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
- bfa_fsm_set_state(ioc, bfa_ioc_sm_fail_retry);
+ bfa_fsm_set_state(ioc, bfa_ioc_sm_fail);
if (event != IOC_E_PFAILED)
bfa_iocpf_getattrfail(ioc);
break;
@@ -492,14 +491,11 @@ bfa_ioc_sm_fail_retry(struct bfa_ioc *ioc, enum ioc_event event)
* Initialization retry failed.
*/
ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
+ bfa_fsm_set_state(ioc, bfa_ioc_sm_fail);
if (event != IOC_E_PFAILED)
bfa_iocpf_initfail(ioc);
break;
- case IOC_E_INITFAILED:
- bfa_fsm_set_state(ioc, bfa_ioc_sm_fail);
- break;
-
case IOC_E_ENABLE:
break;
@@ -561,7 +557,7 @@ bfa_ioc_sm_fail(struct bfa_ioc *ioc, enum ioc_event event)
static void
bfa_iocpf_sm_reset_entry(struct bfa_iocpf *iocpf)
{
- iocpf->retry_count = 0;
+ iocpf->fw_mismatch_notified = false;
iocpf->auto_recover = bfa_nw_auto_recover;
}
@@ -605,7 +601,6 @@ bfa_iocpf_sm_fwcheck(struct bfa_iocpf *iocpf, enum iocpf_event event)
case IOCPF_E_SEMLOCKED:
if (bfa_ioc_firmware_lock(ioc)) {
if (bfa_ioc_sync_start(ioc)) {
- iocpf->retry_count = 0;
bfa_ioc_sync_join(ioc);
bfa_fsm_set_state(iocpf, bfa_iocpf_sm_hwinit);
} else {
@@ -643,10 +638,10 @@ static void
bfa_iocpf_sm_mismatch_entry(struct bfa_iocpf *iocpf)
{
/* Call only the first time sm enters fwmismatch state. */
- if (iocpf->retry_count == 0)
+ if (iocpf->fw_mismatch_notified == false)
bfa_ioc_pf_fwmismatch(iocpf->ioc);
- iocpf->retry_count++;
+ iocpf->fw_mismatch_notified = true;
mod_timer(&(iocpf->ioc)->iocpf_timer, jiffies +
msecs_to_jiffies(BFA_IOC_TOV));
}
@@ -722,8 +717,7 @@ bfa_iocpf_sm_semwait(struct bfa_iocpf *iocpf, enum iocpf_event event)
static void
bfa_iocpf_sm_hwinit_entry(struct bfa_iocpf *iocpf)
{
- mod_timer(&(iocpf->ioc)->iocpf_timer, jiffies +
- msecs_to_jiffies(BFA_IOC_TOV));
+ iocpf->poll_time = 0;
bfa_ioc_reset(iocpf->ioc, 0);
}
@@ -738,20 +732,12 @@ bfa_iocpf_sm_hwinit(struct bfa_iocpf *iocpf, enum iocpf_event event)
switch (event) {
case IOCPF_E_FWREADY:
- del_timer(&ioc->iocpf_timer);
bfa_fsm_set_state(iocpf, bfa_iocpf_sm_enabling);
break;
- case IOCPF_E_INITFAIL:
- del_timer(&ioc->iocpf_timer);
- /*
- * !!! fall through !!!
- */
-
case IOCPF_E_TIMEOUT:
bfa_nw_ioc_hw_sem_release(ioc);
- if (event == IOCPF_E_TIMEOUT)
- bfa_ioc_pf_failed(ioc);
+ bfa_ioc_pf_failed(ioc);
bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail_sync);
break;
@@ -772,6 +758,7 @@ bfa_iocpf_sm_enabling_entry(struct bfa_iocpf *iocpf)
{
mod_timer(&(iocpf->ioc)->iocpf_timer, jiffies +
msecs_to_jiffies(BFA_IOC_TOV));
+ iocpf->ioc->cbfn->reset_cbfn(iocpf->ioc->bfa);
bfa_ioc_send_enable(iocpf->ioc);
}
@@ -809,21 +796,11 @@ bfa_iocpf_sm_enabling(struct bfa_iocpf *iocpf, enum iocpf_event event)
bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling);
break;
- case IOCPF_E_FWREADY:
- bfa_ioc_send_enable(ioc);
- break;
-
default:
bfa_sm_fault(event);
}
}
-static bool
-bfa_nw_ioc_is_operational(struct bfa_ioc *ioc)
-{
- return bfa_fsm_cmp_state(ioc, bfa_ioc_sm_op);
-}
-
static void
bfa_iocpf_sm_ready_entry(struct bfa_iocpf *iocpf)
{
@@ -833,8 +810,6 @@ bfa_iocpf_sm_ready_entry(struct bfa_iocpf *iocpf)
static void
bfa_iocpf_sm_ready(struct bfa_iocpf *iocpf, enum iocpf_event event)
{
- struct bfa_ioc *ioc = iocpf->ioc;
-
switch (event) {
case IOCPF_E_DISABLE:
bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling);
@@ -848,14 +823,6 @@ bfa_iocpf_sm_ready(struct bfa_iocpf *iocpf, enum iocpf_event event)
bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail_sync);
break;
- case IOCPF_E_FWREADY:
- bfa_ioc_pf_failed(ioc);
- if (bfa_nw_ioc_is_operational(ioc))
- bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail_sync);
- else
- bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail_sync);
- break;
-
default:
bfa_sm_fault(event);
}
@@ -879,7 +846,6 @@ bfa_iocpf_sm_disabling(struct bfa_iocpf *iocpf, enum iocpf_event event)
switch (event) {
case IOCPF_E_FWRSP_DISABLE:
- case IOCPF_E_FWREADY:
del_timer(&ioc->iocpf_timer);
bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
break;
@@ -948,7 +914,6 @@ bfa_iocpf_sm_disabled(struct bfa_iocpf *iocpf, enum iocpf_event event)
switch (event) {
case IOCPF_E_ENABLE:
- iocpf->retry_count = 0;
bfa_fsm_set_state(iocpf, bfa_iocpf_sm_semwait);
break;
@@ -979,20 +944,10 @@ bfa_iocpf_sm_initfail_sync(struct bfa_iocpf *iocpf, enum iocpf_event event)
switch (event) {
case IOCPF_E_SEMLOCKED:
bfa_ioc_notify_fail(ioc);
- bfa_ioc_sync_ack(ioc);
- iocpf->retry_count++;
- if (iocpf->retry_count >= BFA_IOC_HWINIT_MAX) {
- bfa_ioc_sync_leave(ioc);
- bfa_nw_ioc_hw_sem_release(ioc);
- bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail);
- } else {
- if (bfa_ioc_sync_complete(ioc))
- bfa_fsm_set_state(iocpf, bfa_iocpf_sm_hwinit);
- else {
- bfa_nw_ioc_hw_sem_release(ioc);
- bfa_fsm_set_state(iocpf, bfa_iocpf_sm_semwait);
- }
- }
+ bfa_ioc_sync_leave(ioc);
+ writel(BFI_IOC_FAIL, ioc->ioc_regs.ioc_fwstate);
+ bfa_nw_ioc_hw_sem_release(ioc);
+ bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail);
break;
case IOCPF_E_DISABLE:
@@ -1017,7 +972,6 @@ bfa_iocpf_sm_initfail_sync(struct bfa_iocpf *iocpf, enum iocpf_event event)
static void
bfa_iocpf_sm_initfail_entry(struct bfa_iocpf *iocpf)
{
- bfa_ioc_pf_initfailed(iocpf->ioc);
}
/**
@@ -1068,11 +1022,11 @@ bfa_iocpf_sm_fail_sync(struct bfa_iocpf *iocpf, enum iocpf_event event)
switch (event) {
case IOCPF_E_SEMLOCKED:
- iocpf->retry_count = 0;
bfa_ioc_sync_ack(ioc);
bfa_ioc_notify_fail(ioc);
if (!iocpf->auto_recover) {
bfa_ioc_sync_leave(ioc);
+ writel(BFI_IOC_FAIL, ioc->ioc_regs.ioc_fwstate);
bfa_nw_ioc_hw_sem_release(ioc);
bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail);
} else {
@@ -1383,7 +1337,7 @@ bfa_ioc_hwinit(struct bfa_ioc *ioc, bool force)
* just wait for an initialization completion interrupt.
*/
if (ioc_fwstate == BFI_IOC_INITING) {
- ioc->cbfn->reset_cbfn(ioc->bfa);
+ bfa_ioc_poll_fwinit(ioc);
return;
}
@@ -1397,7 +1351,6 @@ bfa_ioc_hwinit(struct bfa_ioc *ioc, bool force)
* be flushed. Otherwise MSI-X interrupts are not delivered.
*/
bfa_ioc_msgflush(ioc);
- ioc->cbfn->reset_cbfn(ioc->bfa);
bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_FWREADY);
return;
}
@@ -1681,12 +1634,6 @@ bfa_ioc_pf_disabled(struct bfa_ioc *ioc)
}
static void
-bfa_ioc_pf_initfailed(struct bfa_ioc *ioc)
-{
- bfa_fsm_send_event(ioc, IOC_E_INITFAILED);
-}
-
-static void
bfa_ioc_pf_failed(struct bfa_ioc *ioc)
{
bfa_fsm_send_event(ioc, IOC_E_PFAILED);
@@ -1755,6 +1702,7 @@ bfa_ioc_boot(struct bfa_ioc *ioc, enum bfi_fwboot_type boot_type,
*/
ioc->cbfn->reset_cbfn(ioc->bfa);
bfa_ioc_lpu_start(ioc);
+ bfa_ioc_poll_fwinit(ioc);
}
/**
@@ -1810,10 +1758,6 @@ bfa_ioc_isr(struct bfa_ioc *ioc, struct bfi_mbmsg *m)
case BFI_IOC_I2H_HBEAT:
break;
- case BFI_IOC_I2H_READY_EVENT:
- bfa_fsm_send_event(iocpf, IOCPF_E_FWREADY);
- break;
-
case BFI_IOC_I2H_ENABLE_REPLY:
bfa_fsm_send_event(iocpf, IOCPF_E_FWRSP_ENABLE);
break;
@@ -2341,3 +2285,22 @@ bfa_nw_iocpf_sem_timeout(void *ioc_arg)
bfa_ioc_hw_sem_get(ioc);
}
+
+static void
+bfa_ioc_poll_fwinit(struct bfa_ioc *ioc)
+{
+ u32 fwstate = readl(ioc->ioc_regs.ioc_fwstate);
+
+ if (fwstate == BFI_IOC_DISABLED) {
+ bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_FWREADY);
+ return;
+ }
+
+ if (ioc->iocpf.poll_time >= BFA_IOC_TOV) {
+ bfa_nw_iocpf_timeout(ioc);
+ } else {
+ ioc->iocpf.poll_time += BFA_IOC_POLL_TOV;
+ mod_timer(&ioc->ioc_timer, jiffies +
+ msecs_to_jiffies(BFA_IOC_POLL_TOV));
+ }
+}
diff --git a/drivers/net/bna/bfa_ioc.h b/drivers/net/bna/bfa_ioc.h
index 95358a2..bcc9acc 100644
--- a/drivers/net/bna/bfa_ioc.h
+++ b/drivers/net/bna/bfa_ioc.h
@@ -26,7 +26,7 @@
#define BFA_IOC_TOV 3000 /* msecs */
#define BFA_IOC_HWSEM_TOV 500 /* msecs */
#define BFA_IOC_HB_TOV 500 /* msecs */
-#define BFA_IOC_HWINIT_MAX 5
+#define BFA_IOC_POLL_TOV 200 /* msecs */
/**
* PCI device information required by IOC
@@ -170,8 +170,9 @@ struct bfa_ioc_hbfail_notify {
struct bfa_iocpf {
bfa_fsm_t fsm;
struct bfa_ioc *ioc;
- u32 retry_count;
+ bool fw_mismatch_notified;
bool auto_recover;
+ u32 poll_time;
};
struct bfa_ioc {
diff --git a/drivers/net/bna/bfi.h b/drivers/net/bna/bfi.h
index 284c3f8..d95eeb2 100644
--- a/drivers/net/bna/bfi.h
+++ b/drivers/net/bna/bfi.h
@@ -224,8 +224,7 @@ enum bfi_ioc_i2h_msgs {
BFI_IOC_I2H_ENABLE_REPLY = BFA_I2HM(1),
BFI_IOC_I2H_DISABLE_REPLY = BFA_I2HM(2),
BFI_IOC_I2H_GETATTR_REPLY = BFA_I2HM(3),
- BFI_IOC_I2H_READY_EVENT = BFA_I2HM(4),
- BFI_IOC_I2H_HBEAT = BFA_I2HM(5),
+ BFI_IOC_I2H_HBEAT = BFA_I2HM(4),
};
/**
@@ -333,12 +332,6 @@ enum bfi_port_mode {
/**
* BFI_IOC_I2H_READY_EVENT message
*/
-struct bfi_ioc_rdy_event {
- struct bfi_mhdr mh; /*!< common msg header */
- u8 init_status; /*!< init event status */
- u8 rsvd[3];
-};
-
struct bfi_ioc_hbeat {
struct bfi_mhdr mh; /*!< common msg header */
u32 hb_count; /*!< current heart beat count */
@@ -426,7 +419,7 @@ union bfi_ioc_h2i_msg_u {
*/
union bfi_ioc_i2h_msg_u {
struct bfi_mhdr mh;
- struct bfi_ioc_rdy_event rdy_event;
+ struct bfi_ioc_ctrl_reply fw_event;
u32 mboxmsg[BFI_IOC_MSGSZ];
};
--
1.7.1
--
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