A Memory queue descriptor (MQD) of a userqueue defines it in
the hw's context. As MQD format can vary between different
graphics IPs, we need gfx GEN specific handlers to create MQDs.
This patch:
- Adds a new file which will be used for MES based userqueue
functions targeting GFX and SDMA IP.
- Introduces MQD handler functions for the usermode queues.
- Adds new functions to create and destroy userqueue MQD for
MES-V11 for GFX IP.
V1: Worked on review comments from Alex:
- Make MQD functions GEN and IP specific
V2: Worked on review comments from Alex:
- Reuse the existing adev->mqd[ip] for MQD creation
- Formatting and arrangement of code
V3:
- Integration with doorbell manager
V4: Review comments addressed:
- Do not create a new file for userq, reuse gfx_v11_0.c (Alex)
- Align name of structure members (Luben)
- Don't break up the Cc tag list and the Sob tag list in commit
message (Luben)
V5:
- No need to reserve the bo for MQD (Christian).
- Some more changes to support IP specific MQD creation.
V6:
- Add a comment reminding us to replace the amdgpu_bo_create_kernel()
calls while creating MQD object to amdgpu_bo_create() once eviction
fences are ready (Christian).
V7:
- Re-arrange userqueue functions in adev instead of uq_mgr (Alex)
- Use memdup_user instead of copy_from_user (Christian)
V9:
- Moved userqueue code from gfx_v11_0.c to new file mes_v11_0.c so
that it can be reused for SDMA userqueues as well (Shashank, Alex)
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>
---
drivers/gpu/drm/amd/amdgpu/Makefile | 3 +-
drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c | 4 +
.../gpu/drm/amd/amdgpu/mes_v11_0_userqueue.c | 110 ++++++++++++++++++
3 files changed, 116 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/amd/amdgpu/mes_v11_0_userqueue.c
diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile
index 05a2d1714070..a640bfa468ad 100644
--- a/drivers/gpu/drm/amd/amdgpu/Makefile
+++ b/drivers/gpu/drm/amd/amdgpu/Makefile
@@ -184,7 +184,8 @@ amdgpu-y += \
amdgpu-y += \
amdgpu_mes.o \
mes_v10_1.o \
- mes_v11_0.o
+ mes_v11_0.o \
+ mes_v11_0_userqueue.o
# add UVD block
amdgpu-y += \
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
index f7325b02a191..525bd0f4d3f7 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
@@ -1331,6 +1331,8 @@ static int gfx_v11_0_rlc_backdoor_autoload_enable(struct amdgpu_device *adev)
return 0;
}
+extern const struct amdgpu_userq_funcs userq_mes_v11_0_funcs;
+
static int gfx_v11_0_sw_init(void *handle)
{
int i, j, k, r, ring_id = 0;
@@ -1347,6 +1349,7 @@ 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):
@@ -1358,6 +1361,7 @@ 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
new file mode 100644
index 000000000000..9e7dee77d344
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v11_0_userqueue.c
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright 2024 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+#include "amdgpu.h"
+#include "amdgpu_gfx.h"
+#include "v11_structs.h"
+#include "mes_v11_0.h"
+#include "amdgpu_userqueue.h"
+
+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)
+{
+ struct amdgpu_device *adev = uq_mgr->adev;
+ struct amdgpu_mqd *mqd_hw_default = &adev->mqds[queue->queue_type];
+ struct drm_amdgpu_userq_mqd *mqd_user;
+ struct amdgpu_mqd_prop *userq_props;
+ int r;
+
+ /* Incoming MQD parameters from userspace to be saved here */
+ memset(&mqd_user, 0, sizeof(mqd_user));
+
+ /* Structure to initialize MQD for userqueue using generic MQD init function */
+ userq_props = kzalloc(sizeof(struct amdgpu_mqd_prop), GFP_KERNEL);
+ if (!userq_props) {
+ DRM_ERROR("Failed to allocate memory for userq_props\n");
+ return -ENOMEM;
+ }
+
+ if (args_in->mqd_size != sizeof(struct drm_amdgpu_userq_mqd)) {
+ DRM_ERROR("MQD size mismatch\n");
+ r = -EINVAL;
+ goto free_props;
+ }
+
+ mqd_user = memdup_user(u64_to_user_ptr(args_in->mqd), args_in->mqd_size);
+ if (IS_ERR(mqd_user)) {
+ DRM_ERROR("Failed to read user MQD\n");
+ r = -EFAULT;
+ goto free_props;
+ }
+
+ r = amdgpu_userqueue_create_object(uq_mgr, &queue->mqd, mqd_hw_default->mqd_size);
+ if (r) {
+ DRM_ERROR("Failed to create MQD object for userqueue\n");
+ goto free_mqd_user;
+ }
+
+ /* Initialize the MQD BO with user given values */
+ userq_props->wptr_gpu_addr = mqd_user->wptr_va;
+ userq_props->rptr_gpu_addr = mqd_user->rptr_va;
+ userq_props->queue_size = mqd_user->queue_size;
+ userq_props->hqd_base_gpu_addr = mqd_user->queue_va;
+ userq_props->mqd_gpu_addr = queue->mqd.gpu_addr;
+ userq_props->use_doorbell = true;
+
+ queue->userq_prop = userq_props;
+
+ r = mqd_hw_default->init_mqd(adev, (void *)queue->mqd.cpu_ptr, userq_props);
+ if (r) {
+ DRM_ERROR("Failed to initialize MQD for userqueue\n");
+ goto free_mqd;
+ }
+
+ return 0;
+
+free_mqd:
+ amdgpu_userqueue_destroy_object(uq_mgr, &queue->mqd);
+
+free_mqd_user:
+ kfree(mqd_user);
+
+free_props:
+ kfree(userq_props);
+
+ return r;
+}
+
+static void
+mes_v11_0_userq_mqd_destroy(struct amdgpu_userq_mgr *uq_mgr,
+ struct amdgpu_usermode_queue *queue)
+{
+ kfree(queue->userq_prop);
+ amdgpu_userqueue_destroy_object(uq_mgr, &queue->mqd);
+}
+
+const struct amdgpu_userq_funcs userq_mes_v11_0_funcs = {
+ .mqd_create = mes_v11_0_userq_mqd_create,
+ .mqd_destroy = mes_v11_0_userq_mqd_destroy,
+};
--
2.43.2
