diff options
| author | Sucheta Chakraborty <sucheta.chakraborty@qlogic.com> | 2010-05-13 03:07:49 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-05-14 03:08:01 -0700 |
| commit | a5e463d0b1c123873d6f0c6cdd234041c87b7c80 (patch) | |
| tree | 770fd13b8327ef52b364c4b4f5aa0488ef86a46b | |
| parent | b3a2464941e32ca58059cba68012105e35ce84af (diff) | |
qlcnic: support quisce mode
Device can go to quiescent state, during which drivers
should refrain from using the device.
Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/qlcnic/qlcnic_main.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c index 79c6e0517ba..6a7b8138835 100644 --- a/drivers/net/qlcnic/qlcnic_main.c +++ b/drivers/net/qlcnic/qlcnic_main.c @@ -2043,8 +2043,11 @@ qlcnic_can_start_firmware(struct qlcnic_adapter *adapter) do { msleep(1000); - } while ((QLCRD32(adapter, QLCNIC_CRB_DEV_STATE) != QLCNIC_DEV_READY) - && --dev_init_timeo); + prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE); + + if (prev_state == QLCNIC_DEV_QUISCENT) + continue; + } while ((prev_state != QLCNIC_DEV_READY) && --dev_init_timeo); if (!dev_init_timeo) { dev_err(&adapter->pdev->dev, @@ -2075,6 +2078,14 @@ qlcnic_fwinit_work(struct work_struct *work) if (qlcnic_api_lock(adapter)) goto err_ret; + dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE); + if (dev_state == QLCNIC_DEV_QUISCENT) { + qlcnic_api_unlock(adapter); + qlcnic_schedule_work(adapter, qlcnic_fwinit_work, + FW_POLL_DELAY * 2); + return; + } + if (adapter->fw_wait_cnt++ > adapter->reset_ack_timeo) { dev_err(&adapter->pdev->dev, "Reset:Failed to get ack %d sec\n", adapter->reset_ack_timeo); @@ -2084,6 +2095,17 @@ qlcnic_fwinit_work(struct work_struct *work) if (!qlcnic_check_drv_state(adapter)) { 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_api_unlock(adapter); + return; + } + if (dev_state == QLCNIC_DEV_NEED_RESET) { QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITIALIZING); @@ -2106,6 +2128,8 @@ skip_ack_check: QLCDB(adapter, HW, "Func waiting: Device state=%u\n", dev_state); switch (dev_state) { + case QLCNIC_DEV_QUISCENT: + case QLCNIC_DEV_NEED_QUISCENT: case QLCNIC_DEV_NEED_RESET: qlcnic_schedule_work(adapter, qlcnic_fwinit_work, FW_POLL_DELAY); |