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:
- Introduces MQD handler functions for the usermode queues.
- Adds new functions to create and destroy userqueue MQD for
GFX-GEN-11 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)
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/gfx_v11_0.c | 72 ++++++++++++++++++++++++++
1 file changed, 72 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
index 5c3db694afa8..30e18cb018fa 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 "amdgpu_userqueue.h"
#define GFX11_NUM_GFX_RINGS 1
#define GFX11_MEC_HPD_SIZE 2048
@@ -1295,6 +1296,8 @@ static int gfx_v11_0_rlc_backdoor_autoload_enable(struct amdgpu_device *adev)
return 0;
}
+const struct amdgpu_userq_funcs userq_gfx_v11_funcs;
+
static int gfx_v11_0_sw_init(void *handle)
{
int i, j, k, r, ring_id = 0;
@@ -1313,6 +1316,7 @@ 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_gfx_v11_funcs;
break;
case IP_VERSION(11, 0, 1):
case IP_VERSION(11, 0, 4):
@@ -1322,6 +1326,7 @@ 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_gfx_v11_funcs;
break;
default:
adev->gfx.me.num_me = 1;
@@ -6396,3 +6401,70 @@ const struct amdgpu_ip_block_version gfx_v11_0_ip_block =
.rev = 0,
.funcs = &gfx_v11_0_ip_funcs,
};
+
+static int gfx_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_gfx_generic = &adev->mqds[AMDGPU_HW_IP_GFX];
+ struct drm_amdgpu_userq_mqd_gfx_v11_0 *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 */
+ memset(&userq_props, 0, sizeof(userq_props));
+
+ if (args_in->mqd_size != sizeof(struct drm_amdgpu_userq_mqd_gfx_v11_0)) {
+ DRM_ERROR("MQD size mismatch\n");
+ return -EINVAL;
+ }
+
+ 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");
+ return -EFAULT;
+ }
+
+ r = amdgpu_userqueue_create_object(uq_mgr, &queue->mqd, mqd_gfx_generic->mqd_size);
+ if (r) {
+ DRM_ERROR("Failed to create MQD object for userqueue\n");
+ kfree(mqd_user);
+ return r;
+ }
+
+ /* 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;
+
+ r = mqd_gfx_generic->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);
+ kfree(mqd_user);
+ return r;
+}
+
+static void
+gfx_v11_0_userq_mqd_destroy(struct amdgpu_userq_mgr *uq_mgr, struct amdgpu_usermode_queue *queue)
+{
+ amdgpu_userqueue_destroy_object(uq_mgr, &queue->mqd);
+}
+
+const struct amdgpu_userq_funcs userq_gfx_v11_funcs = {
+ .mqd_create = gfx_v11_0_userq_mqd_create,
+ .mqd_destroy = gfx_v11_0_userq_mqd_destroy,
+};
--
2.42.0
