From c8031019dc95e3ab7cc0b09f1894c5f52dc0c187 Mon Sep 17 00:00:00 2001 From: Arunpravin Paneer Selvam Date: Tue, 10 Oct 2023 07:35:06 -0700 Subject: drm/amdgpu: Implement a new 64bit sequence memory driver MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Developed a new driver which allocates a 64bit memory on each request in sequence order. At the moment, user queue fence memory is the main consumer of this seq64 driver. v2: Worked on review comments from Christian for the following modifications - Move driver name from "semaphore" to "seq64" - Remove unnecessary PT/PD mapping - Move enable_mes check into init/fini functions. v3: Worked on review comments from Christian - drop enable_mes check - use DECLARE_BITMAP for bit array - added kerneldoc for seq64 v4: Worked on review comments from Christian - Rename amdgpu_seq64_get name with amdgpu_seq64_alloc v5: Worked on review comments from Christian - Fix seq64 lockdep warning - move fpriv->seq64_va check into amdgpu_seq64_unmap() - make the function amdgpu_seq64_unmap() return as void. - reserve the buffers as not interruptible. v6: port to drm_exec (Alex) v7: disable for now (Arun) Signed-off-by: Arunpravin Paneer Selvam Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 7eeaf0aa7f81..151f8b950b72 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -2676,6 +2676,12 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev) goto init_failed; } } + + r = amdgpu_seq64_init(adev); + if (r) { + DRM_ERROR("allocate seq64 failed %d\n", r); + goto init_failed; + } } } @@ -3138,6 +3144,7 @@ static int amdgpu_device_ip_fini(struct amdgpu_device *adev) amdgpu_device_wb_fini(adev); amdgpu_device_mem_scratch_fini(adev); amdgpu_ib_pool_fini(adev); + amdgpu_seq64_fini(adev); } r = adev->ip_blocks[i].version->funcs->sw_fini((void *)adev); -- cgit v1.2.3-70-g09d2