On Fri, Apr 26, 2024 at 10:07 AM Shashank Sharma
<shashank.sharma@xxxxxxx> 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 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)
>
> V5: Merged patches 5 and 6 into this single patch
> Addressed review comments:
> - Use lower_32_bits instead of mask (Christian)
> - gfx_v11_0 instead of gfx_v11 in function names (Alex)
> - Shadow and GDS objects are now coming from userspace (Christian,
> Alex)
>
> V6:
> - Add a comment to replace amdgpu_bo_create_kernel() with
> amdgpu_bo_create() during fw_ctx object creation (Christian).
> - Move proc_ctx_gpu_addr, gang_ctx_gpu_addr and fw_ctx_gpu_addr out
> of generic queue structure and make it gen11 specific (Alex).
>
> V7:
> - Using helper function to create/destroy userqueue objects.
> - Removed FW object space allocation.
>
> V8:
> - Updating FW object address from user values.
>
> V9:
> - uppdated function name from gfx_v11_* to mes_v11_*
>
> Cc: Alex Deucher <alexander.deucher@xxxxxxx>
> Cc: Christian Koenig <christian.koenig@xxxxxxx>
> Signed-off-by: Shashank Sharma <shashank.sharma@xxxxxxx>
> Signed-off-by: Arvind Yadav <arvind.yadav@xxxxxxx>
> ---
> .../gpu/drm/amd/amdgpu/mes_v11_0_userqueue.c | 43 +++++++++++++++++++
> .../gpu/drm/amd/include/amdgpu_userqueue.h | 1 +
> 2 files changed, 44 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v11_0_userqueue.c b/drivers/gpu/drm/amd/amdgpu/mes_v11_0_userqueue.c
> index 9e7dee77d344..9f9fdcb9c294 100644
> --- a/drivers/gpu/drm/amd/amdgpu/mes_v11_0_userqueue.c
> +++ b/drivers/gpu/drm/amd/amdgpu/mes_v11_0_userqueue.c
> @@ -27,6 +27,41 @@
> #include "mes_v11_0.h"
> #include "amdgpu_userqueue.h"
>
> +#define AMDGPU_USERQ_PROC_CTX_SZ PAGE_SIZE
> +#define AMDGPU_USERQ_GANG_CTX_SZ PAGE_SIZE
> +
> +static int mes_v11_0_userq_create_ctx_space(struct amdgpu_userq_mgr *uq_mgr,
> + struct amdgpu_usermode_queue *queue,
> + struct drm_amdgpu_userq_mqd *mqd_user)
> +{
> + struct amdgpu_userq_obj *ctx = &queue->fw_obj;
> + struct v11_gfx_mqd *mqd = queue->mqd.cpu_ptr;
> + int r, size;
> +
> + /*
> + * The FW expects at least one page space allocated for
> + * process ctx and gang ctx each. Create an object
> + * for the same.
> + */
> + size = AMDGPU_USERQ_PROC_CTX_SZ + AMDGPU_USERQ_GANG_CTX_SZ;
> + r = amdgpu_userqueue_create_object(uq_mgr, ctx, size);
Is this per queue or per context? I.e., is this shared with all
queues associated with an fd?
Alex
> + if (r) {
> + DRM_ERROR("Failed to allocate ctx space bo for userqueue, err:%d\n", r);
> + return r;
> + }
> +
> + /* Shadow and GDS objects come directly from userspace */
> + mqd->shadow_base_lo = mqd_user->shadow_va & 0xFFFFFFFC;
> + mqd->shadow_base_hi = upper_32_bits(mqd_user->shadow_va);
> +
> + mqd->gds_bkup_base_lo = mqd_user->gds_va & 0xFFFFFFFC;
> + mqd->gds_bkup_base_hi = upper_32_bits(mqd_user->gds_va);
> +
> + mqd->fw_work_area_base_lo = mqd_user->csa_va & 0xFFFFFFFC;
> + mqd->fw_work_area_base_hi = upper_32_bits(mqd_user->csa_va);
> + return 0;
> +}
> +
> static int mes_v11_0_userq_mqd_create(struct amdgpu_userq_mgr *uq_mgr,
> struct drm_amdgpu_userq_in *args_in,
> struct amdgpu_usermode_queue *queue)
> @@ -82,6 +117,13 @@ static int mes_v11_0_userq_mqd_create(struct amdgpu_userq_mgr *uq_mgr,
> goto free_mqd;
> }
>
> + /* Create BO for FW operations */
> + r = mes_v11_0_userq_create_ctx_space(uq_mgr, queue, mqd_user);
> + if (r) {
> + DRM_ERROR("Failed to allocate BO for userqueue (%d)", r);
> + goto free_mqd;
> + }
> +
> return 0;
>
> free_mqd:
> @@ -100,6 +142,7 @@ static void
> mes_v11_0_userq_mqd_destroy(struct amdgpu_userq_mgr *uq_mgr,
> struct amdgpu_usermode_queue *queue)
> {
> + amdgpu_userqueue_destroy_object(uq_mgr, &queue->fw_obj);
> kfree(queue->userq_prop);
> amdgpu_userqueue_destroy_object(uq_mgr, &queue->mqd);
> }
> diff --git a/drivers/gpu/drm/amd/include/amdgpu_userqueue.h b/drivers/gpu/drm/amd/include/amdgpu_userqueue.h
> index bbd29f68b8d4..643f31474bd8 100644
> --- a/drivers/gpu/drm/amd/include/amdgpu_userqueue.h
> +++ b/drivers/gpu/drm/amd/include/amdgpu_userqueue.h
> @@ -44,6 +44,7 @@ struct amdgpu_usermode_queue {
> struct amdgpu_userq_mgr *userq_mgr;
> struct amdgpu_vm *vm;
> struct amdgpu_userq_obj mqd;
> + struct amdgpu_userq_obj fw_obj;
> };
>
> struct amdgpu_userq_funcs {
> --
> 2.43.2
>
