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drm/amdgpu: add userq object va track helpers

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Add the userq object virtual address list_add() helpers
for tracking the userq obj va address usage.

Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Prike Liang
2025-09-29 13:52:13 +08:00
committed by Alex Deucher
parent 1bea57ea75
commit 5cfa33fabf
4 changed files with 52 additions and 21 deletions
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44
drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
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@@ -44,10 +44,29 @@ u32 amdgpu_userq_get_supported_ip_mask(struct amdgpu_device *adev)
return userq_ip_mask;
}
int amdgpu_userq_input_va_validate(struct amdgpu_vm *vm, u64 addr,
u64 expected_size)
static int amdgpu_userq_buffer_va_list_add(struct amdgpu_usermode_queue *queue,
struct amdgpu_bo_va_mapping *va_map, u64 addr)
{
struct amdgpu_userq_va_cursor *va_cursor;
struct userq_va_list;
va_cursor = kzalloc(sizeof(*va_cursor), GFP_KERNEL);
if (!va_cursor)
return -ENOMEM;
INIT_LIST_HEAD(&va_cursor->list);
va_cursor->gpu_addr = addr;
atomic_set(&va_map->bo_va->userq_va_mapped, 1);
list_add(&va_cursor->list, &queue->userq_va_list);
return 0;
}
int amdgpu_userq_input_va_validate(struct amdgpu_usermode_queue *queue,
u64 addr, u64 expected_size)
{
struct amdgpu_bo_va_mapping *va_map;
struct amdgpu_vm *vm = queue->vm;
u64 user_addr;
u64 size;
int r = 0;
@@ -67,6 +86,7 @@ int amdgpu_userq_input_va_validate(struct amdgpu_vm *vm, u64 addr,
/* Only validate the userq whether resident in the VM mapping range */
if (user_addr >= va_map->start &&
va_map->last - user_addr + 1 >= size) {
amdgpu_userq_buffer_va_list_add(queue, va_map, user_addr);
amdgpu_bo_unreserve(vm->root.bo);
return 0;
}
@@ -185,6 +205,7 @@ amdgpu_userq_cleanup(struct amdgpu_userq_mgr *uq_mgr,
uq_funcs->mqd_destroy(uq_mgr, queue);
amdgpu_userq_fence_driver_free(queue);
idr_remove(&uq_mgr->userq_idr, queue_id);
list_del(&queue->userq_va_list);
kfree(queue);
}
@@ -505,14 +526,7 @@ amdgpu_userq_create(struct drm_file *filp, union drm_amdgpu_userq *args)
goto unlock;
}
/* Validate the userq virtual address.*/
if (amdgpu_userq_input_va_validate(&fpriv->vm, args->in.queue_va, args->in.queue_size) ||
amdgpu_userq_input_va_validate(&fpriv->vm, args->in.rptr_va, AMDGPU_GPU_PAGE_SIZE) ||
amdgpu_userq_input_va_validate(&fpriv->vm, args->in.wptr_va, AMDGPU_GPU_PAGE_SIZE)) {
r = -EINVAL;
kfree(queue);
goto unlock;
}
INIT_LIST_HEAD(&queue->userq_va_list);
queue->doorbell_handle = args->in.doorbell_handle;
queue->queue_type = args->in.ip_type;
queue->vm = &fpriv->vm;
@@ -523,6 +537,15 @@ amdgpu_userq_create(struct drm_file *filp, union drm_amdgpu_userq *args)
db_info.db_obj = &queue->db_obj;
db_info.doorbell_offset = args->in.doorbell_offset;
/* Validate the userq virtual address.*/
if (amdgpu_userq_input_va_validate(queue, args->in.queue_va, args->in.queue_size) ||
amdgpu_userq_input_va_validate(queue, args->in.rptr_va, AMDGPU_GPU_PAGE_SIZE) ||
amdgpu_userq_input_va_validate(queue, args->in.wptr_va, AMDGPU_GPU_PAGE_SIZE)) {
r = -EINVAL;
kfree(queue);
goto unlock;
}
/* Convert relative doorbell offset into absolute doorbell index */
index = amdgpu_userq_get_doorbell_index(uq_mgr, &db_info, filp);
if (index == (uint64_t)-EINVAL) {
@@ -548,7 +571,6 @@ amdgpu_userq_create(struct drm_file *filp, union drm_amdgpu_userq *args)
goto unlock;
}
qid = idr_alloc(&uq_mgr->userq_idr, queue, 1, AMDGPU_MAX_USERQ_COUNT, GFP_KERNEL);
if (qid < 0) {
drm_file_err(uq_mgr->file, "Failed to allocate a queue id\n");