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Commit 70535350 authored by Rick Farrington's avatar Rick Farrington Committed by David S. Miller
Browse files

liquidio: with embedded f/w, don't reload f/w, issue pf flr at exit 



1. Add support for PF FLR when exiting
   (enables CORE_DRV_ACTIVE upon next driver init)
2. Skip some initialization (don't try to load f/w, activate consoles).

Signed-off-by: default avatarRick Farrington <ricardo.farrington@cavium.com>
Signed-off-by: default avatarFelix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 755f17a1

drivers/net/ethernet/cavium/liquidio/lio_main.c

+46 −24
Original line number Diff line number Diff line
@@ -1121,6 +1121,33 @@ static bool fw_type_is_none(void) 
		       sizeof(LIO_FW_NAME_TYPE_NONE)) == 0;

}



/**

 * \brief PCI FLR for each Octeon device.

 * @param oct octeon device

 */

static void octeon_pci_flr(struct octeon_device *oct)

{

	int rc;



	pci_save_state(oct->pci_dev);



	pci_cfg_access_lock(oct->pci_dev);



	/* Quiesce the device completely */

	pci_write_config_word(oct->pci_dev, PCI_COMMAND,

			      PCI_COMMAND_INTX_DISABLE);



	rc = __pci_reset_function_locked(oct->pci_dev);



	if (rc != 0)

		dev_err(&oct->pci_dev->dev, "Error %d resetting PCI function %d\n",

			rc, oct->pf_num);



	pci_cfg_access_unlock(oct->pci_dev);



	pci_restore_state(oct->pci_dev);

}



/**

 *\brief Destroy resources associated with octeon device

 * @param pdev PCI device structure
@@ -1269,14 +1296,16 @@ static void octeon_destroy_resources(struct octeon_device *oct) 
	case OCT_DEV_PCI_MAP_DONE:

		refcount = octeon_deregister_device(oct);



		if (!fw_type_is_none()) {

		/* Soft reset the octeon device before exiting.

			 * Implementation note: here, we reset the device

			 * if it is a CN6XXX OR the last CN23XX device.

		 * However, if fw was loaded from card (i.e. autoboot),

		 * perform an FLR instead.

		 * Implementation note: only soft-reset the device

		 * if it is a CN6XXX OR the LAST CN23XX device.

		 */

			if (OCTEON_CN6XXX(oct) || !refcount)

		if (fw_type_is_none())

			octeon_pci_flr(oct);

		else if (OCTEON_CN6XXX(oct) || !refcount)

			oct->fn_list.soft_reset(oct);

		}



		octeon_unmap_pci_barx(oct, 0);

		octeon_unmap_pci_barx(oct, 1);
@@ -1912,11 +1941,6 @@ static int load_firmware(struct octeon_device *oct) 
	char fw_name[LIO_MAX_FW_FILENAME_LEN];

	char *tmp_fw_type;



	if (fw_type_is_none()) {

		dev_info(&oct->pci_dev->dev, "Skipping firmware load\n");

		return ret;

	}



	if (fw_type[0] == '\0')

		tmp_fw_type = LIO_FW_NAME_TYPE_NIC;

	else
@@ -3900,9 +3924,8 @@ static int octeon_device_init(struct octeon_device *octeon_dev) 
	octeon_dev->app_mode = CVM_DRV_INVALID_APP;



	if (OCTEON_CN23XX_PF(octeon_dev)) {

		if (!cn23xx_fw_loaded(octeon_dev)) {

		if (!cn23xx_fw_loaded(octeon_dev) && !fw_type_is_none()) {

			fw_loaded = 0;

			if (!fw_type_is_none()) {

			/* Do a soft reset of the Octeon device. */

			if (octeon_dev->fn_list.soft_reset(octeon_dev))

				return 1;
@@ -3911,7 +3934,6 @@ static int octeon_device_init(struct octeon_device *octeon_dev) 
				fw_loaded = 0;

			else

				fw_loaded = 1;

			}

		} else {

			fw_loaded = 1;

		}