Commit 6e018822 authored by Lijo Lazar's avatar Lijo Lazar Committed by Alex Deucher
Browse files

drm/amdgpu: Add API to get tmr info from acpi 



In certain configs, TMR information is available from ACPI. Add API to
fetch the information.

Signed-off-by: default avatarLijo Lazar <lijo.lazar@amd.com>
Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 4d5275ab

drivers/gpu/drm/amd/amdgpu/amdgpu.h

+7 −0
Original line number Diff line number Diff line
@@ -1400,6 +1400,8 @@ int amdgpu_acpi_power_shift_control(struct amdgpu_device *adev, 
				    u8 dev_state, bool drv_state);

int amdgpu_acpi_smart_shift_update(struct drm_device *dev, enum amdgpu_ss ss_state);

int amdgpu_acpi_pcie_notify_device_ready(struct amdgpu_device *adev);

int amdgpu_acpi_get_tmr_info(struct amdgpu_device *adev, u64 *tmr_offset,

			     u64 *tmr_size);



void amdgpu_acpi_get_backlight_caps(struct amdgpu_dm_backlight_caps *caps);

bool amdgpu_acpi_should_gpu_reset(struct amdgpu_device *adev);
@@ -1407,6 +1409,11 @@ void amdgpu_acpi_detect(void); 
void amdgpu_acpi_release(void);

#else

static inline int amdgpu_acpi_init(struct amdgpu_device *adev) { return 0; }

static inline int amdgpu_acpi_get_tmr_info(struct amdgpu_device *adev,

					   u64 *tmr_offset, u64 *tmr_size)

{

	return -EINVAL;

}

static inline void amdgpu_acpi_fini(struct amdgpu_device *adev) { }

static inline bool amdgpu_acpi_should_gpu_reset(struct amdgpu_device *adev) { return false; }

static inline void amdgpu_acpi_detect(void) { }

drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c

+20 −0
Original line number Diff line number Diff line
@@ -1072,6 +1072,26 @@ static int amdgpu_acpi_enumerate_xcc(void) 
	return 0;

}



int amdgpu_acpi_get_tmr_info(struct amdgpu_device *adev, u64 *tmr_offset,

			     u64 *tmr_size)

{

	struct amdgpu_acpi_dev_info *dev_info;

	u16 bdf;



	if (!tmr_offset || !tmr_size)

		return -EINVAL;



	bdf = (adev->pdev->bus->number << 8) | adev->pdev->devfn;

	dev_info = amdgpu_acpi_get_dev(bdf);

	if (!dev_info)

		return -ENOENT;



	*tmr_offset = dev_info->tmr_base;

	*tmr_size = dev_info->tmr_size;



	return 0;

}



/**

 * amdgpu_acpi_event - handle notify events

 *