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qlcnic: support quiescent mode 

Put device in quiescent mode during internal loopback test.
Before running test, set state to NEED_QUISCENT. After getting
ack from all function, change state to QUISCENT and perform test.

Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amit Kumar Salecha 2010-10-07 23:46:06 +00:00 committed by David S. Miller
parent f7ec804a3e
commit b8c1762045
3 changed files with 74 additions and 17 deletions
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2
drivers/net/qlcnic/qlcnic.h
View File

@ -1313,6 +1313,8 @@ int qlcnic_set_ilb_mode(struct qlcnic_adapter *adapter);
void qlcnic_fetch_mac(struct qlcnic_adapter *, u32, u32, u8, u8 *);
/* Functions from qlcnic_main.c */
int qlcnic_request_quiscent_mode(struct qlcnic_adapter *adapter);
void qlcnic_clear_quiscent_mode(struct qlcnic_adapter *adapter);
int qlcnic_reset_context(struct qlcnic_adapter *);
u32 qlcnic_issue_cmd(struct qlcnic_adapter *adapter,
u32 pci_fn, u32 version, u32 arg1, u32 arg2, u32 arg3, u32 cmd);

6
drivers/net/qlcnic/qlcnic_ethtool.c
View File

@ -706,6 +706,11 @@ static int qlcnic_loopback_test(struct net_device *netdev)
if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
return -EIO;
if (qlcnic_request_quiscent_mode(adapter)) {
clear_bit(__QLCNIC_RESETTING, &adapter->state);
return -EIO;
}
ret = qlcnic_diag_alloc_res(netdev, QLCNIC_LOOPBACK_TEST);
if (ret)
goto clear_it;
@ -722,6 +727,7 @@ done:
qlcnic_diag_free_res(netdev, max_sds_rings);
clear_it:
qlcnic_clear_quiscent_mode(adapter);
adapter->max_sds_rings = max_sds_rings;
clear_bit(__QLCNIC_RESETTING, &adapter->state);
return ret;

83
drivers/net/qlcnic/qlcnic_main.c
View File

@ -2712,7 +2712,8 @@ qlcnic_fwinit_work(struct work_struct *work)
goto err_ret;
dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
if (dev_state == QLCNIC_DEV_QUISCENT) {
if (dev_state == QLCNIC_DEV_QUISCENT ||
dev_state == QLCNIC_DEV_NEED_QUISCENT) {
qlcnic_api_unlock(adapter);
qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
FW_POLL_DELAY * 2);
@ -2734,18 +2735,6 @@ qlcnic_fwinit_work(struct work_struct *work)
skip_ack_check:
dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
if (dev_state == QLCNIC_DEV_NEED_QUISCENT) {
QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
QLCNIC_DEV_QUISCENT);
qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
FW_POLL_DELAY * 2);
QLCDB(adapter, DRV, "Quiscing the driver\n");
qlcnic_idc_debug_info(adapter, 0);
qlcnic_api_unlock(adapter);
return;
}
if (dev_state == QLCNIC_DEV_NEED_RESET) {
QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
QLCNIC_DEV_INITIALIZING);
@ -2802,7 +2791,12 @@ qlcnic_detach_work(struct work_struct *work)
netif_device_detach(netdev);
qlcnic_down(adapter, netdev);
/* Dont grab rtnl lock during Quiscent mode */
if (adapter->dev_state == QLCNIC_DEV_NEED_QUISCENT) {
if (netif_running(netdev))
__qlcnic_down(adapter, netdev);
} else
qlcnic_down(adapter, netdev);
status = QLCRD32(adapter, QLCNIC_PEG_HALT_STATUS1);
@ -2844,6 +2838,61 @@ qlcnic_set_npar_non_operational(struct qlcnic_adapter *adapter)
qlcnic_api_unlock(adapter);
}
/* Caller should held RESETTING bit.
* This should be call in sync with qlcnic_request_quiscent_mode.
*/
void qlcnic_clear_quiscent_mode(struct qlcnic_adapter *adapter)
{
qlcnic_clr_drv_state(adapter);
qlcnic_api_lock(adapter);
QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
qlcnic_api_unlock(adapter);
}
/* Caller should held RESETTING bit.
*/
int qlcnic_request_quiscent_mode(struct qlcnic_adapter *adapter)
{
u8 timeo = adapter->dev_init_timeo / 2;
u32 state;
if (qlcnic_api_lock(adapter))
return -EIO;
state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
if (state != QLCNIC_DEV_READY)
return -EIO;
QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_QUISCENT);
qlcnic_api_unlock(adapter);
QLCDB(adapter, DRV, "NEED QUISCENT state set\n");
qlcnic_idc_debug_info(adapter, 0);
qlcnic_set_drv_state(adapter, QLCNIC_DEV_NEED_QUISCENT);
do {
msleep(2000);
state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
if (state == QLCNIC_DEV_QUISCENT)
return 0;
if (!qlcnic_check_drv_state(adapter)) {
if (qlcnic_api_lock(adapter))
return -EIO;
QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
QLCNIC_DEV_QUISCENT);
qlcnic_api_unlock(adapter);
QLCDB(adapter, DRV, "QUISCENT mode set\n");
return 0;
}
} while (--timeo);
dev_err(&adapter->pdev->dev, "Failed to quiesce device, DRV_STATE=%08x"
" DRV_ACTIVE=%08x\n", QLCRD32(adapter, QLCNIC_CRB_DRV_STATE),
QLCRD32(adapter, QLCNIC_CRB_DRV_ACTIVE));
qlcnic_clear_quiscent_mode(adapter);
return -EIO;
}
/*Transit to RESET state from READY state only */
static void
qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
@ -2951,11 +3000,11 @@ qlcnic_check_health(struct qlcnic_adapter *adapter)
qlcnic_dev_request_reset(adapter);
state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
if (state == QLCNIC_DEV_NEED_RESET ||
state == QLCNIC_DEV_NEED_QUISCENT) {
if (state == QLCNIC_DEV_NEED_RESET) {
qlcnic_set_npar_non_operational(adapter);
adapter->need_fw_reset = 1;
}
} else if (state == QLCNIC_DEV_NEED_QUISCENT)
goto detach;
heartbeat = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
if (heartbeat != adapter->heartbeat) {