[PATCH v11 11/28] drm/amdgpu: enable GFX-V11 userqueue support

[Shashank Sharma <shashank.sharma@amd.com>]

This patch enables GFX-v11 IP support in the usermode queue base
code. It typically:
- adds a GFX_v11 specific MQD structure
- sets IP functions to create and destroy MQDs
- sets MQD objects coming from userspace

V10: introduced this spearate patch for GFX V11 enabling (Alex).
V11: Addressed review comments:
     - update the comments in GFX mqd structure informing user about using
       the INFO IOCTL for object sizes (Alex)
     - rename struct drm_amdgpu_userq_mqd_gfx_v11 to
       drm_amdgpu_userq_mqd_gfx11 (Marek)

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian Koenig <christian.koenig@amd.com>
Signed-off-by: Shashank Sharma <shashank.sharma@amd.com>
Signed-off-by: Arvind Yadav <arvind.yadav@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c |  6 ++++
 drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c        |  3 ++
 .../gpu/drm/amd/amdgpu/mes_v11_0_userqueue.c  | 28 +++++++++++++++++++
 include/uapi/drm/amdgpu_drm.h                 | 19 +++++++++++++
 4 files changed, 56 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
index 64a063ec3b27..5cb984c509c2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
@@ -188,6 +188,12 @@ amdgpu_userqueue_create(struct drm_file *filp, union drm_amdgpu_userq *args)
 	uint64_t index;
 	int qid, r = 0;
 
+	/* Usermode queues are only supported for GFX IP as of now */
+	if (args->in.ip_type != AMDGPU_HW_IP_GFX) {
+		DRM_ERROR("Usermode queue doesn't support IP type %u\n", args->in.ip_type);
+		return -EINVAL;
+	}
+
 	if (args->in.flags) {
 		DRM_ERROR("Usermode queue flags not supported yet\n");
 		return -EINVAL;
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
index d3e8be82a172..e68874fd0ff9 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
@@ -49,6 +49,7 @@
 #include "gfx_v11_0_3.h"
 #include "nbio_v4_3.h"
 #include "mes_v11_0.h"
+#include "mes_v11_0_userqueue.h"
 
 #define GFX11_NUM_GFX_RINGS		1
 #define GFX11_MEC_HPD_SIZE	2048
@@ -1552,6 +1553,7 @@ static int gfx_v11_0_sw_init(void *handle)
 		adev->gfx.mec.num_mec = 2;
 		adev->gfx.mec.num_pipe_per_mec = 4;
 		adev->gfx.mec.num_queue_per_pipe = 4;
+		adev->userq_funcs[AMDGPU_HW_IP_GFX] = &userq_mes_v11_0_funcs;
 		break;
 	case IP_VERSION(11, 0, 1):
 	case IP_VERSION(11, 0, 4):
@@ -1564,6 +1566,7 @@ static int gfx_v11_0_sw_init(void *handle)
 		adev->gfx.mec.num_mec = 1;
 		adev->gfx.mec.num_pipe_per_mec = 4;
 		adev->gfx.mec.num_queue_per_pipe = 4;
+		adev->userq_funcs[AMDGPU_HW_IP_GFX] = &userq_mes_v11_0_funcs;
 		break;
 	default:
 		adev->gfx.me.num_me = 1;
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 bc9ce5233a7d..bcfa0d1ef7bf 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_v11_0_userqueue.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v11_0_userqueue.c
@@ -180,6 +180,34 @@ static int mes_v11_0_userq_create_ctx_space(struct amdgpu_userq_mgr *uq_mgr,
 		return r;
 	}
 
+	/* Shadow, GDS and CSA objects come directly from userspace */
+	if (mqd_user->ip_type == AMDGPU_HW_IP_GFX) {
+		struct v11_gfx_mqd *mqd = queue->mqd.cpu_ptr;
+		struct drm_amdgpu_userq_mqd_gfx11 *mqd_gfx_v11;
+
+		if (mqd_user->mqd_size != sizeof(*mqd_gfx_v11) || !mqd_user->mqd) {
+			DRM_ERROR("Invalid GFX MQD\n");
+			return -EINVAL;
+		}
+
+		mqd_gfx_v11 = memdup_user(u64_to_user_ptr(mqd_user->mqd), mqd_user->mqd_size);
+		if (IS_ERR(mqd_gfx_v11)) {
+			DRM_ERROR("Failed to read user MQD\n");
+			amdgpu_userqueue_destroy_object(uq_mgr, ctx);
+			return -ENOMEM;
+		}
+
+		mqd->shadow_base_lo = mqd_gfx_v11->shadow_va & 0xFFFFFFFC;
+		mqd->shadow_base_hi = upper_32_bits(mqd_gfx_v11->shadow_va);
+
+		mqd->gds_bkup_base_lo = mqd_gfx_v11->gds_va & 0xFFFFFFFC;
+		mqd->gds_bkup_base_hi = upper_32_bits(mqd_gfx_v11->gds_va);
+
+		mqd->fw_work_area_base_lo = mqd_gfx_v11->csa_va & 0xFFFFFFFC;
+		mqd->fw_work_area_base_hi = upper_32_bits(mqd_gfx_v11->csa_va);
+		kfree(mqd_gfx_v11);
+	}
+
 	return 0;
 }
 
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index bd8d47a55553..895d64982498 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -409,6 +409,25 @@ union drm_amdgpu_userq {
 	struct drm_amdgpu_userq_out out;
 };
 
+/* GFX V11 IP specific MQD parameters */
+struct drm_amdgpu_userq_mqd_gfx11 {
+	/**
+	 * @shadow_va: Virtual address of the GPU memory to hold the shadow buffer.
+	 * Use AMDGPU_INFO_IOCTL to find the exact size of the object.
+	 */
+	__u64   shadow_va;
+	/**
+	 * @gds_va: Virtual address of the GPU memory to hold the GDS buffer.
+	 * Use AMDGPU_INFO_IOCTL to find the exact size of the object.
+	 */
+	__u64   gds_va;
+	/**
+	 * @csa_va: Virtual address of the GPU memory to hold the CSA buffer.
+	 * Use AMDGPU_INFO_IOCTL to find the exact size of the object.
+	 */
+	__u64   csa_va;
+};
+
 /* vm ioctl */
 #define AMDGPU_VM_OP_RESERVE_VMID	1
 #define AMDGPU_VM_OP_UNRESERVE_VMID	2
-- 
2.45.1