[PATCH v11 12/28] drm/amdgpu: enable SDMA usermode queues

[Shashank Sharma]

From: Arvind Yadav <Arvind.Yadav at amd.com>

This patch does necessary modifications to enable the SDMA
usermode queues using the existing userqueue infrastructure.

V9:  introduced this patch in the series
V10: use header file instead of extern (Alex)
V11: rename drm_amdgpu_userq_mqd_sdma_gfx_v11 to
     drm_amdgpu_userq_mqd_sdma_gfx11 (Marek)

Cc: Christian König <Christian.Koenig at amd.com>
Cc: Alex Deucher <alexander.deucher at amd.com>
Reviewed-by: Christian König <christian.koenig at amd.com>
Signed-off-by: Shashank Sharma <shashank.sharma at amd.com>
Signed-off-by: Arvind Yadav <arvind.yadav at amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam at amd.com>
Change-Id: I782acfc08fef0fa5302e665173788fc03dbc51e1
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c  |  2 +-
 .../gpu/drm/amd/amdgpu/mes_v11_0_userqueue.c   | 18 ++++++++++++++++++
 drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c         |  2 ++
 include/uapi/drm/amdgpu_drm.h                  | 10 ++++++++++
 4 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
index 5cb984c509c2..2c5747cc492e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
@@ -189,7 +189,7 @@ amdgpu_userqueue_create(struct drm_file *filp, union drm_amdgpu_userq *args)
 	int qid, r = 0;
 
 	/* Usermode queues are only supported for GFX IP as of now */
-	if (args->in.ip_type != AMDGPU_HW_IP_GFX) {
+	if (args->in.ip_type != AMDGPU_HW_IP_GFX && args->in.ip_type != AMDGPU_HW_IP_DMA) {
 		DRM_ERROR("Usermode queue doesn't support IP type %u\n", args->in.ip_type);
 		return -EINVAL;
 	}
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 bcfa0d1ef7bf..dc5359742774 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_v11_0_userqueue.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v11_0_userqueue.c
@@ -206,6 +206,24 @@ static int mes_v11_0_userq_create_ctx_space(struct amdgpu_userq_mgr *uq_mgr,
 		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);
+	} else if (mqd_user->ip_type == AMDGPU_HW_IP_DMA) {
+		struct v11_sdma_mqd *mqd = queue->mqd.cpu_ptr;
+		struct drm_amdgpu_userq_mqd_sdma_gfx11 *mqd_sdma_v11;
+
+		if (mqd_user->mqd_size != sizeof(*mqd_sdma_v11) || !mqd_user->mqd) {
+			DRM_ERROR("Invalid SDMA MQD\n");
+			return -EINVAL;
+		}
+
+		mqd_sdma_v11 = memdup_user(u64_to_user_ptr(mqd_user->mqd), mqd_user->mqd_size);
+		if (IS_ERR(mqd_sdma_v11)) {
+			DRM_ERROR("Failed to read sdma user MQD\n");
+			amdgpu_userqueue_destroy_object(uq_mgr, ctx);
+			return -ENOMEM;
+		}
+
+		mqd->sdmax_rlcx_csa_addr_lo = mqd_sdma_v11->csa_va & 0xFFFFFFFC;
+		mqd->sdmax_rlcx_csa_addr_hi = upper_32_bits(mqd_sdma_v11->csa_va);
 	}
 
 	return 0;
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
index 208a1fa9d4e7..62f6f015c685 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
@@ -43,6 +43,7 @@
 #include "sdma_common.h"
 #include "sdma_v6_0.h"
 #include "v11_structs.h"
+#include "mes_v11_0_userqueue.h"
 
 MODULE_FIRMWARE("amdgpu/sdma_6_0_0.bin");
 MODULE_FIRMWARE("amdgpu/sdma_6_0_1.bin");
@@ -1340,6 +1341,7 @@ static int sdma_v6_0_sw_init(void *handle)
 	else
 		DRM_ERROR("Failed to allocated memory for SDMA IP Dump\n");
 
+	adev->userq_funcs[AMDGPU_HW_IP_DMA] = &userq_mes_v11_0_funcs;
 	return r;
 }
 
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index 895d64982498..3ea067242b19 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -428,6 +428,16 @@ struct drm_amdgpu_userq_mqd_gfx11 {
 	__u64   csa_va;
 };
 
+/* GFX V11 SDMA IP specific MQD parameters */
+struct drm_amdgpu_userq_mqd_sdma_gfx11 {
+	/**
+	 * @csa_va: Virtual address of the GPU memory to hold the CSA buffer.
+	 * This must be a from a separate GPU object, and use AMDGPU_INFO IOCTL
+	 * to get the size.
+	 */
+	__u64   csa_va;
+};
+
 /* vm ioctl */
 #define AMDGPU_VM_OP_RESERVE_VMID	1
 #define AMDGPU_VM_OP_UNRESERVE_VMID	2
-- 
2.45.1