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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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20
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
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@@ -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
*