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Commit a5e463d0 authored by Sucheta Chakraborty's avatar Sucheta Chakraborty Committed by David S. Miller
Browse files

qlcnic: support quisce mode 



Device can go to quiescent state, during which drivers
should refrain from using the device.

Signed-off-by: default avatarSucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: default avatarAmit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b3a24649

drivers/net/qlcnic/qlcnic_main.c

+26 −2
Original line number Diff line number Diff line
@@ -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 @@ qlcnic_fwinit_work(struct work_struct *work) 
	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);