diff options
| author | Shashank Sharma <shashank.sharma@amd.com> | 2023-07-14 15:19:54 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-08-07 17:14:06 -0400 |
| commit | 54c30d2a8defeef631d0111477218fe4ceecb3da (patch) | |
| tree | 3ec899775139ea9ea1a3f9ef13bac645c4d674a0 /drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h | |
| parent | 36f3f375ed156d177a1adbafc3247a43880a9710 (diff) | |
drm/amdgpu: create kernel doorbell pages
This patch:
- creates a doorbell page for graphics driver usages.
- adds a few new varlables in adev->doorbell structure to
keep track of kernel's doorbell-bo.
- removes the adev->doorbell.ptr variable, replaces it with
kernel-doorbell-bo's cpu address.
V2: - Create doorbell BO directly, no wrappe functions (Alex)
- no additional doorbell structure (Alex, Christian)
- Use doorbell_cpu_ptr, remove ioremap (Christian, Alex)
- Allocate one extra page of doorbells for MES (Alex)
V4: Move MES doorbell base init into MES related patch (Christian)
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian Koenig <christian.koenig@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Shashank Sharma <shashank.sharma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h index 0e593cfeb570..38cab1c6e7f3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h @@ -31,10 +31,15 @@ struct amdgpu_doorbell { /* doorbell mmio */ resource_size_t base; resource_size_t size; - u32 __iomem *ptr; /* Number of doorbells reserved for amdgpu kernel driver */ u32 num_kernel_doorbells; + + /* Kernel doorbells */ + struct amdgpu_bo *kernel_doorbells; + + /* For CPU access of doorbells */ + uint32_t *cpu_addr; }; /* Reserved doorbells for amdgpu (including multimedia). @@ -350,6 +355,7 @@ void amdgpu_mm_wdoorbell64(struct amdgpu_device *adev, u32 index, u64 v); */ int amdgpu_doorbell_init(struct amdgpu_device *adev); void amdgpu_doorbell_fini(struct amdgpu_device *adev); +int amdgpu_doorbell_create_kernel_doorbells(struct amdgpu_device *adev); #define RDOORBELL32(index) amdgpu_mm_rdoorbell(adev, (index)) #define WDOORBELL32(index, v) amdgpu_mm_wdoorbell(adev, (index), (v)) |