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Commit bda2c4be authored by Mohammed Siddiq's avatar Mohammed Siddiq Committed by snandini
Browse files

qcacld-3.0: Add pld api to get PCI reg dump on SSR 

Add pld api to get PCI register dump on FW crash due
to PCI bus failure.

Change-Id: Ie30edbe2c60b0e71912667491c9fadbbe92373c4
parent feb91356

core/pld/inc/pld_common.h

+1 −0
Original line number Diff line number Diff line
@@ -470,6 +470,7 @@ void pld_allow_l1(struct device *dev); 
int pld_set_pcie_gen_speed(struct device *dev, u8 pcie_gen_speed);



void pld_is_pci_link_down(struct device *dev);

void pld_get_bus_reg_dump(struct device *dev, uint8_t *buf, uint32_t len);

int pld_shadow_control(struct device *dev, bool enable);

void pld_schedule_recovery_work(struct device *dev,

				enum pld_recovery_reason reason);

core/pld/src/pld_common.c

+29 −0
Original line number Diff line number Diff line
@@ -693,6 +693,35 @@ void pld_is_pci_link_down(struct device *dev) 
	}

}



/**

 * pld_get_bus_reg_dump() - Get bus reg dump

 * @dev: device

 * @buffer: buffer for hang data

 * @len: len of hang data

 *

 * Get pci reg dump for hang data.

 *

 * Return: void

 */

void pld_get_bus_reg_dump(struct device *dev, uint8_t *buf, uint32_t len)

{

	switch (pld_get_bus_type(dev)) {

	case PLD_BUS_TYPE_PCIE_FW_SIM:

	case PLD_BUS_TYPE_IPCI_FW_SIM:

		break;

	case PLD_BUS_TYPE_PCIE:

		pld_pcie_get_reg_dump(dev, buf, len);

		break;

	case PLD_BUS_TYPE_SNOC_FW_SIM:

	case PLD_BUS_TYPE_SNOC:

	case PLD_BUS_TYPE_IPCI:

		break;

	default:

		pr_err("Invalid device type\n");

		break;

	}

}



/**

 * pld_schedule_recovery_work() - Schedule recovery work

 * @dev: device

core/pld/src/pld_pcie.h

+20 −0
Original line number Diff line number Diff line
@@ -187,6 +187,12 @@ static inline void pld_pcie_link_down(struct device *dev) 
{

}



static inline int pld_pcie_get_reg_dump(struct device *dev, uint8_t *buf,

					uint32_t len)

{

	return 0;

}



static inline int pld_pcie_is_fw_down(struct device *dev)

{

	return 0;
@@ -500,6 +506,20 @@ static inline void pld_pcie_link_down(struct device *dev) 
	cnss_pci_link_down(dev);

}



#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0))

static inline int pld_pcie_get_reg_dump(struct device *dev, uint8_t *buf,

					uint32_t len)

{

	return cnss_pci_get_reg_dump(dev, buf, len);

}

#else

static inline int pld_pcie_get_reg_dump(struct device *dev, uint8_t *buf,

					uint32_t len)

{

	return 0;

}

#endif



static inline int pld_pcie_is_fw_down(struct device *dev)

{

	return cnss_pci_is_device_down(dev);