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| author | Alex Deucher <alexander.deucher@amd.com> | 2017-12-14 16:27:11 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-12-18 10:59:23 -0500 |
| commit | 22cb0164378c6511423f79d429e0b2e4290934df (patch) | |
| tree | 1287794b7b566e818a87320568be172559b61b00 /drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | |
| parent | 8111c387275f64aae972d5717d32b0f756bb6e5f (diff) | |
| download | linux-22cb0164378c6511423f79d429e0b2e4290934df.tar.bz2 | |
drm/amdgpu: move amdgpu_doorbell_get_kfd_info to amdgpu_amdkfd.c
It's the only place it's used.
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c index c70cda04dbfb..896b16db58aa 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c @@ -93,6 +93,39 @@ void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev) adev->pdev, kfd2kgd); } +/** + * amdgpu_doorbell_get_kfd_info - Report doorbell configuration required to + * setup amdkfd + * + * @adev: amdgpu_device pointer + * @aperture_base: output returning doorbell aperture base physical address + * @aperture_size: output returning doorbell aperture size in bytes + * @start_offset: output returning # of doorbell bytes reserved for amdgpu. + * + * amdgpu and amdkfd share the doorbell aperture. amdgpu sets it up, + * takes doorbells required for its own rings and reports the setup to amdkfd. + * amdgpu reserved doorbells are at the start of the doorbell aperture. + */ +static void amdgpu_doorbell_get_kfd_info(struct amdgpu_device *adev, + phys_addr_t *aperture_base, + size_t *aperture_size, + size_t *start_offset) +{ + /* + * The first num_doorbells are used by amdgpu. + * amdkfd takes whatever's left in the aperture. + */ + if (adev->doorbell.size > adev->doorbell.num_doorbells * sizeof(u32)) { + *aperture_base = adev->doorbell.base; + *aperture_size = adev->doorbell.size; + *start_offset = adev->doorbell.num_doorbells * sizeof(u32); + } else { + *aperture_base = 0; + *aperture_size = 0; + *start_offset = 0; + } +} + void amdgpu_amdkfd_device_init(struct amdgpu_device *adev) { int i; |