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Commit f41797e5 authored by Madhvapathi Sriram's avatar Madhvapathi Sriram
Browse files

cnss2: Check if firmware asserts before power off for CBC 



Do a final check for firmware assert before powering off device
in calibration mode. Collect RAM dump if firmware has asserted
for debug purpose. Also skip dump collection if device is already
powered off.

Change-Id: I99a438d6b7d7048b300244511c72d6fbfc610094
Signed-off-by: default avatarYue Ma <yuem@codeaurora.org>
Signed-off-by: default avatarMadhvapathi Sriram <quic_msriram@quicinc.com>
parent 01f96ccc

drivers/net/wireless/cnss2/pci.c

+25 −3
Original line number Diff line number Diff line
@@ -404,7 +404,7 @@ int cnss_pci_check_link_status(struct cnss_pci_data *pci_priv) 
	if (pci_priv->pci_link_state == PCI_LINK_DOWN) {

		cnss_pr_dbg("%ps: PCIe link is in suspend state\n",

			    (void *)_RET_IP_);

		return -EIO;

		return -EACCES;

	}



	if (pci_priv->pci_link_down_ind) {
@@ -2199,7 +2199,8 @@ static int cnss_qca6290_shutdown(struct cnss_pci_data *pci_priv) 
	if ((test_bit(CNSS_DRIVER_LOADING, &plat_priv->driver_state) ||

	     test_bit(CNSS_DRIVER_UNLOADING, &plat_priv->driver_state) ||

	     test_bit(CNSS_DRIVER_IDLE_RESTART, &plat_priv->driver_state) ||

	     test_bit(CNSS_DRIVER_IDLE_SHUTDOWN, &plat_priv->driver_state)) &&

	     test_bit(CNSS_DRIVER_IDLE_SHUTDOWN, &plat_priv->driver_state) ||

	     test_bit(CNSS_COLD_BOOT_CAL, &plat_priv->driver_state)) &&

	    test_bit(CNSS_DEV_ERR_NOTIFY, &plat_priv->driver_state)) {

		del_timer(&pci_priv->dev_rddm_timer);

		cnss_pci_collect_dump(pci_priv);
@@ -4388,8 +4389,29 @@ void cnss_pci_collect_dump_info(struct cnss_pci_data *pci_priv, bool in_panic) 
		return;

	}



	if (!cnss_is_device_powered_on(plat_priv)) {

		cnss_pr_dbg("Device is already powered off, skip\n");

		return;

	}



	if (!in_panic) {

		mutex_lock(&pci_priv->bus_lock);

		ret = cnss_pci_check_link_status(pci_priv);

		if (ret) {

			if (ret != -EACCES) {

				mutex_unlock(&pci_priv->bus_lock);

				return;

			}

			if (cnss_pci_resume_bus(pci_priv)) {

				mutex_unlock(&pci_priv->bus_lock);

				return;

			}

		}

		mutex_unlock(&pci_priv->bus_lock);

	} else {

		if (cnss_pci_check_link_status(pci_priv))

			return;

	}



	cnss_pci_dump_misc_reg(pci_priv);

	cnss_pci_dump_shadow_reg(pci_priv);