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

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

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar 2023-01-27 18:40:14 +05:30 committed by Alex Deucher
parent 4d5275ab0b
commit 6e01882267
2 changed files with 27 additions and 0 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -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) { }

20
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
View File

@ -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
*