[PATCH v4 05/10] drm/amdgpu: create context space for usermode queue
Alex Deucher
alexdeucher at gmail.com
Fri May 19 21:21:19 UTC 2023
On Mon, Apr 24, 2023 at 1:39 PM Shashank Sharma <shashank.sharma at amd.com> wrote:
>
> The FW expects us to allocate at least one page as context
> space to process gang, process, GDS and FW related work.
> This patch creates a joint object for the same, and calculates
> GPU space offsets for each of these spaces.
>
> V1: Addressed review comments on RFC patch:
> Alex: Make this function IP specific
>
> V2: Addressed review comments from Christian
> - Allocate only one object for total FW space, and calculate
> offsets for each of these objects.
>
> V3: Integration with doorbell manager
> V4: Review comments:
> - Remove shadow from FW space list from cover letter (Alex)
> - Alignment of macro (Luben)
>
> Cc: Alex Deucher <alexander.deucher at amd.com>
> Cc: Christian Koenig <christian.koenig at amd.com>
> Signed-off-by: Shashank Sharma <shashank.sharma at amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c | 57 ++++++++++++++++++-
> .../gpu/drm/amd/include/amdgpu_userqueue.h | 6 ++
> 2 files changed, 61 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
> index 9f7b14966ac8..f6b33faea86f 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
> @@ -53,6 +53,11 @@
> #define GFX11_NUM_GFX_RINGS 1
> #define GFX11_MEC_HPD_SIZE 2048
>
> +#define AMDGPU_USERQ_PROC_CTX_SZ PAGE_SIZE
> +#define AMDGPU_USERQ_GANG_CTX_SZ PAGE_SIZE
> +#define AMDGPU_USERQ_FW_CTX_SZ PAGE_SIZE
> +#define AMDGPU_USERQ_GDS_CTX_SZ PAGE_SIZE
> +
> #define RLCG_UCODE_LOADING_START_ADDRESS 0x00002000L
> #define RLC_PG_DELAY_3_DEFAULT_GC_11_0_1 0x1388
>
> @@ -6406,6 +6411,44 @@ const struct amdgpu_ip_block_version gfx_v11_0_ip_block =
> .funcs = &gfx_v11_0_ip_funcs,
> };
>
> +static int gfx_v11_userq_create_ctx_space(struct amdgpu_userq_mgr *uq_mgr,
> + struct amdgpu_usermode_queue *queue)
> +{
> + struct amdgpu_device *adev = uq_mgr->adev;
> + struct amdgpu_userq_ctx_space *ctx = &queue->fw_space;
> + int r, size;
> +
> + /*
> + * The FW expects at least one page space allocated for
> + * process ctx, gang ctx, gds ctx, fw ctx each.
> + */
> + size = AMDGPU_USERQ_PROC_CTX_SZ + AMDGPU_USERQ_FW_CTX_SZ +
> + AMDGPU_USERQ_GANG_CTX_SZ + AMDGPU_USERQ_GDS_CTX_SZ;
> + r = amdgpu_bo_create_kernel(adev, size, PAGE_SIZE,
> + AMDGPU_GEM_DOMAIN_GTT,
> + &ctx->obj,
> + &ctx->gpu_addr,
> + &ctx->cpu_ptr);
> + if (r) {
> + DRM_ERROR("Failed to allocate ctx space bo for userqueue, err:%d\n", r);
> + return r;
> + }
> +
> + queue->proc_ctx_gpu_addr = ctx->gpu_addr;
> + queue->gang_ctx_gpu_addr = queue->proc_ctx_gpu_addr + AMDGPU_USERQ_PROC_CTX_SZ;
> + queue->fw_ctx_gpu_addr = queue->gang_ctx_gpu_addr + AMDGPU_USERQ_GANG_CTX_SZ;
> + queue->gds_ctx_gpu_addr = queue->fw_ctx_gpu_addr + AMDGPU_USERQ_FW_CTX_SZ;
> + return 0;
> +}
Please use gfx_v11_0_ naming for consistency.
Alex
> +
> +static void gfx_v11_userq_destroy_ctx_space(struct amdgpu_userq_mgr *uq_mgr,
> + struct amdgpu_usermode_queue *queue)
> +{
> + struct amdgpu_userq_ctx_space *ctx = &queue->fw_space;
> +
> + amdgpu_bo_free_kernel(&ctx->obj, &ctx->gpu_addr, &ctx->cpu_ptr);
> +}
> +
> static int
> gfx_v11_userq_mqd_create(struct amdgpu_userq_mgr *uq_mgr, struct amdgpu_usermode_queue *queue)
> {
> @@ -6426,10 +6469,16 @@ gfx_v11_userq_mqd_create(struct amdgpu_userq_mgr *uq_mgr, struct amdgpu_usermode
> }
>
> memset(mqd->cpu_ptr, 0, size);
> + r = gfx_v11_userq_create_ctx_space(uq_mgr, queue);
> + if (r) {
> + DRM_ERROR("Failed to create CTX space for userqueue (%d)\n", r);
> + goto free_mqd;
> + }
> +
> r = amdgpu_bo_reserve(mqd->obj, false);
> if (unlikely(r != 0)) {
> DRM_ERROR("Failed to reserve mqd for userqueue (%d)", r);
> - goto free_mqd;
> + goto free_ctx;
> }
>
> queue->userq_prop.use_doorbell = true;
> @@ -6438,12 +6487,15 @@ gfx_v11_userq_mqd_create(struct amdgpu_userq_mgr *uq_mgr, struct amdgpu_usermode
> amdgpu_bo_unreserve(mqd->obj);
> if (r) {
> DRM_ERROR("Failed to init MQD for queue\n");
> - goto free_mqd;
> + goto free_ctx;
> }
>
> DRM_DEBUG_DRIVER("MQD for queue %d created\n", queue->queue_id);
> return 0;
>
> +free_ctx:
> + gfx_v11_userq_destroy_ctx_space(uq_mgr, queue);
> +
> free_mqd:
> amdgpu_bo_free_kernel(&mqd->obj, &mqd->gpu_addr, &mqd->cpu_ptr);
> return r;
> @@ -6454,6 +6506,7 @@ gfx_v11_userq_mqd_destroy(struct amdgpu_userq_mgr *uq_mgr, struct amdgpu_usermod
> {
> struct amdgpu_userq_ctx_space *mqd = &queue->mqd;
>
> + gfx_v11_userq_destroy_ctx_space(uq_mgr, queue);
> amdgpu_bo_free_kernel(&mqd->obj, &mqd->gpu_addr, &mqd->cpu_ptr);
> }
>
> diff --git a/drivers/gpu/drm/amd/include/amdgpu_userqueue.h b/drivers/gpu/drm/amd/include/amdgpu_userqueue.h
> index e7da27918bd2..11e8ad649f6e 100644
> --- a/drivers/gpu/drm/amd/include/amdgpu_userqueue.h
> +++ b/drivers/gpu/drm/amd/include/amdgpu_userqueue.h
> @@ -38,11 +38,17 @@ struct amdgpu_usermode_queue {
> int queue_id;
> int queue_type;
> uint64_t doorbell_handle;
> + uint64_t proc_ctx_gpu_addr;
> + uint64_t gang_ctx_gpu_addr;
> + uint64_t gds_ctx_gpu_addr;
> + uint64_t fw_ctx_gpu_addr;
> + uint64_t shadow_ctx_gpu_addr;
> uint64_t flags;
> struct amdgpu_mqd_prop userq_prop;
> struct amdgpu_userq_mgr *userq_mgr;
> struct amdgpu_vm *vm;
> struct amdgpu_userq_ctx_space mqd;
> + struct amdgpu_userq_ctx_space fw_space;
> };
>
> struct amdgpu_userq_funcs {
> --
> 2.40.0
>
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