From 664c3b03f9ca97302b4d832d7972326eb5fde3b4 Mon Sep 17 00:00:00 2001 From: Shashank Sharma Date: Tue, 21 Mar 2023 17:25:47 +0100 Subject: [PATCH] drm/amdgpu: cleanup MES process level doorbells MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit MES allocates process level doorbells, but there is no userspace client to consume it. It was only being used for the MES ring tests (in kernel), and was written by kernel doorbell write. The previous patch of this series has changed the MES ring test code to use kernel level MES doorbells. This patch now cleans up the process level doorbell allocation code which is not required. Cc: Alex Deucher Cc: Christian Koenig Reviewed-by: Christian König Signed-off-by: Shashank Sharma Signed-off-by: Arvind Yadav Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c | 54 +-------------------------------- drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h | 10 ------ 2 files changed, 1 insertion(+), 63 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c index dd9a1f3f9104..b6015157763a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c @@ -39,35 +39,6 @@ int amdgpu_mes_doorbell_process_slice(struct amdgpu_device *adev) PAGE_SIZE); } -int amdgpu_mes_alloc_process_doorbells(struct amdgpu_device *adev, - unsigned int *doorbell_index) -{ - int r = ida_simple_get(&adev->mes.doorbell_ida, 2, - adev->mes.max_doorbell_slices, - GFP_KERNEL); - if (r > 0) - *doorbell_index = r; - - return r; -} - -void amdgpu_mes_free_process_doorbells(struct amdgpu_device *adev, - unsigned int doorbell_index) -{ - if (doorbell_index) - ida_simple_remove(&adev->mes.doorbell_ida, doorbell_index); -} - -unsigned int amdgpu_mes_get_doorbell_dw_offset_in_bar( - struct amdgpu_device *adev, - uint32_t doorbell_index, - unsigned int doorbell_id) -{ - return ((doorbell_index * - amdgpu_mes_doorbell_process_slice(adev)) / sizeof(u32) + - doorbell_id * 2); -} - static int amdgpu_mes_kernel_doorbell_get(struct amdgpu_device *adev, struct amdgpu_mes_process *process, int ip_type, uint64_t *doorbell_index) @@ -259,15 +230,6 @@ int amdgpu_mes_create_process(struct amdgpu_device *adev, int pasid, return -ENOMEM; } - process->doorbell_bitmap = - kzalloc(DIV_ROUND_UP(AMDGPU_MES_MAX_NUM_OF_QUEUES_PER_PROCESS, - BITS_PER_BYTE), GFP_KERNEL); - if (!process->doorbell_bitmap) { - DRM_ERROR("failed to allocate doorbell bitmap\n"); - kfree(process); - return -ENOMEM; - } - /* allocate the process context bo and map it */ r = amdgpu_bo_create_kernel(adev, AMDGPU_MES_PROC_CTX_SIZE, PAGE_SIZE, AMDGPU_GEM_DOMAIN_GTT, @@ -294,15 +256,6 @@ int amdgpu_mes_create_process(struct amdgpu_device *adev, int pasid, goto clean_up_ctx; } - /* allocate the starting doorbell index of the process */ - r = amdgpu_mes_alloc_process_doorbells(adev, &process->doorbell_index); - if (r < 0) { - DRM_ERROR("failed to allocate doorbell for process\n"); - goto clean_up_pasid; - } - - DRM_DEBUG("process doorbell index = %d\n", process->doorbell_index); - INIT_LIST_HEAD(&process->gang_list); process->vm = vm; process->pasid = pasid; @@ -312,15 +265,12 @@ int amdgpu_mes_create_process(struct amdgpu_device *adev, int pasid, amdgpu_mes_unlock(&adev->mes); return 0; -clean_up_pasid: - idr_remove(&adev->mes.pasid_idr, pasid); - amdgpu_mes_unlock(&adev->mes); clean_up_ctx: + amdgpu_mes_unlock(&adev->mes); amdgpu_bo_free_kernel(&process->proc_ctx_bo, &process->proc_ctx_gpu_addr, &process->proc_ctx_cpu_ptr); clean_up_memory: - kfree(process->doorbell_bitmap); kfree(process); return r; } @@ -366,7 +316,6 @@ void amdgpu_mes_destroy_process(struct amdgpu_device *adev, int pasid) idr_remove(&adev->mes.gang_id_idr, gang->gang_id); } - amdgpu_mes_free_process_doorbells(adev, process->doorbell_index); idr_remove(&adev->mes.pasid_idr, pasid); amdgpu_mes_unlock(&adev->mes); @@ -388,7 +337,6 @@ void amdgpu_mes_destroy_process(struct amdgpu_device *adev, int pasid) amdgpu_bo_free_kernel(&process->proc_ctx_bo, &process->proc_ctx_gpu_addr, &process->proc_ctx_cpu_ptr); - kfree(process->doorbell_bitmap); kfree(process); } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h index 7c27e3a9ae6b..a27b424ffe00 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h @@ -77,7 +77,6 @@ struct amdgpu_mes { uint32_t kiq_version; uint32_t total_max_queue; - uint32_t doorbell_id_offset; uint32_t max_doorbell_slices; uint64_t default_process_quantum; @@ -148,7 +147,6 @@ struct amdgpu_mes_process { uint64_t process_quantum; struct list_head gang_list; uint32_t doorbell_index; - unsigned long *doorbell_bitmap; struct mutex doorbell_lock; }; @@ -393,14 +391,6 @@ int amdgpu_mes_ctx_unmap_meta_data(struct amdgpu_device *adev, int amdgpu_mes_self_test(struct amdgpu_device *adev); -int amdgpu_mes_alloc_process_doorbells(struct amdgpu_device *adev, - unsigned int *doorbell_index); -void amdgpu_mes_free_process_doorbells(struct amdgpu_device *adev, - unsigned int doorbell_index); -unsigned int amdgpu_mes_get_doorbell_dw_offset_in_bar( - struct amdgpu_device *adev, - uint32_t doorbell_index, - unsigned int doorbell_id); int amdgpu_mes_doorbell_process_slice(struct amdgpu_device *adev); /* -- 2.11.0