---
.../gpu/drm/amd/amdgpu/amdgpu_userq_fence.c | 238 +++++++++++++-----
include/uapi/drm/amdgpu_drm.h | 48 ++--
2 files changed, 206 insertions(+), 80 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c
index 0725f28f3484..aa794f342036 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c
@@ -386,12 +386,14 @@ int amdgpu_userq_signal_ioctl(struct drm_device *dev,
void *data,
struct amdgpu_fpriv *fpriv = filp->driver_priv;
struct amdgpu_userq_mgr *userq_mgr = &fpriv->userq_mgr;
struct drm_amdgpu_userq_signal *args = data;
+ struct drm_gem_object **gobj_write = NULL;
+ struct drm_gem_object **gobj_read = NULL;
struct amdgpu_usermode_queue *queue;
- struct drm_gem_object **gobj = NULL;
struct drm_syncobj **syncobj = NULL;
+ u32 *bo_handles_write, num_write_bo_handles;
u32 *syncobj_handles, num_syncobj_handles;
- u32 *bo_handles, num_bo_handles;
- int r, i, entry, boentry;
+ u32 *bo_handles_read, num_read_bo_handles;
+ int r, i, entry, rentry, wentry;
struct dma_fence *fence;
struct drm_exec exec;
u64 wptr;
@@ -417,32 +419,59 @@ int amdgpu_userq_signal_ioctl(struct drm_device *dev,
void *data,
}
}
- num_bo_handles = args->num_bo_handles;
- bo_handles = memdup_user(u64_to_user_ptr(args->bo_handles_array),
- sizeof(u32) * num_bo_handles);
- if (IS_ERR(bo_handles))
+ num_read_bo_handles = args->num_read_bo_handles;
+ bo_handles_read =
memdup_user(u64_to_user_ptr(args->bo_handles_read_array),
+ sizeof(u32) * num_read_bo_handles);
+ if (IS_ERR(bo_handles_read))
goto free_syncobj;
- /* Array of pointers to the GEM objects */
- gobj = kmalloc_array(num_bo_handles, sizeof(*gobj), GFP_KERNEL);
- if (!gobj) {
+ /* Array of pointers to the GEM read objects */
+ gobj_read = kmalloc_array(num_read_bo_handles, sizeof(*gobj_read),
GFP_KERNEL);
+ if (!gobj_read) {
r = -ENOMEM;
- goto free_bo_handles;
+ goto free_bo_handles_read;
}
- for (boentry = 0; boentry < num_bo_handles; boentry++) {
- gobj[boentry] = drm_gem_object_lookup(filp,
bo_handles[boentry]);
- if (!gobj[boentry]) {
+ for (rentry = 0; rentry < num_read_bo_handles; rentry++) {
+ gobj_read[rentry] = drm_gem_object_lookup(filp,
bo_handles_read[rentry]);
+ if (!gobj_read[rentry]) {
r = -ENOENT;
- goto put_gobj;
+ goto put_gobj_read;
}
}
- drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, num_bo_handles);
+ num_write_bo_handles = args->num_write_bo_handles;
+ bo_handles_write =
memdup_user(u64_to_user_ptr(args->bo_handles_write_array),
+ sizeof(u32) * num_write_bo_handles);
+ if (IS_ERR(bo_handles_write))
+ goto put_gobj_read;
+
+ /* Array of pointers to the GEM write objects */
+ gobj_write = kmalloc_array(num_write_bo_handles, sizeof(*gobj_write),
GFP_KERNEL);
+ if (!gobj_write) {
+ r = -ENOMEM;
+ goto free_bo_handles_write;
+ }
+
+ for (wentry = 0; wentry < num_write_bo_handles; wentry++) {
+ gobj_write[wentry] = drm_gem_object_lookup(filp,
bo_handles_write[wentry]);
+ if (!gobj_write[wentry]) {
+ r = -ENOENT;
+ goto put_gobj_write;
+ }
+ }
+
+ drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT,
+ (num_read_bo_handles + num_write_bo_handles));
/* Lock all BOs with retry handling */
drm_exec_until_all_locked(&exec) {
- r = drm_exec_prepare_array(&exec, gobj, num_bo_handles, 1);
+ r = drm_exec_prepare_array(&exec, gobj_read,
num_read_bo_handles, 1);
+ drm_exec_retry_on_contention(&exec);
+ if (r)
+ goto exec_fini;
+
+ r = drm_exec_prepare_array(&exec, gobj_write,
num_write_bo_handles, 1);
drm_exec_retry_on_contention(&exec);
if (r)
goto exec_fini;
@@ -468,13 +497,20 @@ int amdgpu_userq_signal_ioctl(struct drm_device *dev,
void *data,
dma_fence_put(queue->last_fence);
queue->last_fence = dma_fence_get(fence);
- for (i = 0; i < num_bo_handles; i++) {
- if (!gobj || !gobj[i]->resv)
+ for (i = 0; i < num_read_bo_handles; i++) {
+ if (!gobj_read || !gobj_read[i]->resv)
continue;
- dma_resv_add_fence(gobj[i]->resv, fence,
- dma_resv_usage_rw(args->bo_flags &
- AMDGPU_USERQ_BO_WRITE));
+ dma_resv_add_fence(gobj_read[i]->resv, fence,
+ DMA_RESV_USAGE_READ);
+ }
+
+ for (i = 0; i < num_write_bo_handles; i++) {
+ if (!gobj_write || !gobj_write[i]->resv)
+ continue;
+
+ dma_resv_add_fence(gobj_read[i]->resv, fence,
+ DMA_RESV_USAGE_WRITE);
}
/* Add the created fence to syncobj/BO's */
@@ -486,12 +522,18 @@ int amdgpu_userq_signal_ioctl(struct drm_device *dev,
void *data,
exec_fini:
drm_exec_fini(&exec);
-put_gobj:
- while (boentry-- > 0)
- drm_gem_object_put(gobj[boentry]);
- kfree(gobj);
-free_bo_handles:
- kfree(bo_handles);
+put_gobj_write:
+ while (wentry-- > 0)
+ drm_gem_object_put(gobj_write[wentry]);
+ kfree(gobj_write);
+free_bo_handles_write:
+ kfree(bo_handles_write);
+put_gobj_read:
+ while (rentry-- > 0)
+ drm_gem_object_put(gobj_read[rentry]);
+ kfree(gobj_read);
+free_bo_handles_read:
+ kfree(bo_handles_read);
free_syncobj:
while (entry-- > 0)
if (syncobj[entry])
@@ -506,28 +548,35 @@ int amdgpu_userq_signal_ioctl(struct drm_device *dev,
void *data,
int amdgpu_userq_wait_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
- u32 *syncobj_handles, *timeline_points, *timeline_handles, *bo_handles;
- u32 num_syncobj, num_bo_handles, num_points;
+ u32 *syncobj_handles, *timeline_points, *timeline_handles,
*bo_handles_read, *bo_handles_write;
+ u32 num_syncobj, num_read_bo_handles, num_write_bo_handles, num_points;
struct drm_amdgpu_userq_fence_info *fence_info = NULL;
struct drm_amdgpu_userq_wait *wait_info = data;
+ struct drm_gem_object **gobj_write;
+ struct drm_gem_object **gobj_read;
struct dma_fence **fences = NULL;
- struct drm_gem_object **gobj;
+ int r, i, rentry, wentry, cnt;
struct drm_exec exec;
- int r, i, entry, cnt;
u64 num_fences = 0;
- num_bo_handles = wait_info->num_bo_handles;
- bo_handles = memdup_user(u64_to_user_ptr(wait_info->bo_handles_array),
- sizeof(u32) * num_bo_handles);
- if (IS_ERR(bo_handles))
- return PTR_ERR(bo_handles);
+ num_read_bo_handles = wait_info->num_read_bo_handles;
+ bo_handles_read =
memdup_user(u64_to_user_ptr(wait_info->bo_handles_read_array),
+ sizeof(u32) * num_read_bo_handles);
+ if (IS_ERR(bo_handles_read))
+ return PTR_ERR(bo_handles_read);
+
+ num_write_bo_handles = wait_info->num_write_bo_handles;
+ bo_handles_write =
memdup_user(u64_to_user_ptr(wait_info->bo_handles_write_array),
+ sizeof(u32) * num_write_bo_handles);
+ if (IS_ERR(bo_handles_write))
+ goto free_bo_handles_read;
num_syncobj = wait_info->num_syncobj_handles;
syncobj_handles =
memdup_user(u64_to_user_ptr(wait_info->syncobj_handles_array),
sizeof(u32) * num_syncobj);
if (IS_ERR(syncobj_handles)) {
r = PTR_ERR(syncobj_handles);
- goto free_bo_handles;
+ goto free_bo_handles_write;
}
num_points = wait_info->num_points;
@@ -545,29 +594,51 @@ int amdgpu_userq_wait_ioctl(struct drm_device *dev, void
*data,
goto free_timeline_handles;
}
- gobj = kmalloc_array(num_bo_handles, sizeof(*gobj), GFP_KERNEL);
- if (!gobj) {
+ gobj_read = kmalloc_array(num_read_bo_handles, sizeof(*gobj_read),
GFP_KERNEL);
+ if (!gobj_read) {
r = -ENOMEM;
goto free_timeline_points;
}
- for (entry = 0; entry < num_bo_handles; entry++) {
- gobj[entry] = drm_gem_object_lookup(filp, bo_handles[entry]);
- if (!gobj[entry]) {
+ for (rentry = 0; rentry < num_read_bo_handles; rentry++) {
+ gobj_read[rentry] = drm_gem_object_lookup(filp,
bo_handles_read[rentry]);
+ if (!gobj_read[rentry]) {
+ r = -ENOENT;
+ goto put_gobj_read;
+ }
+ }
+
+ gobj_write = kmalloc_array(num_write_bo_handles, sizeof(*gobj_write),
GFP_KERNEL);
+ if (!gobj_write) {
+ r = -ENOMEM;
+ goto put_gobj_read;
+ }
+
+ for (wentry = 0; wentry < num_write_bo_handles; wentry++) {
+ gobj_write[wentry] = drm_gem_object_lookup(filp,
bo_handles_write[wentry]);
+ if (!gobj_write[wentry]) {
r = -ENOENT;
- goto put_gobj;
+ goto put_gobj_write;
}
}
- drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, num_bo_handles);
+ drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT,
+ (num_read_bo_handles + num_write_bo_handles));
/* Lock all BOs with retry handling */
drm_exec_until_all_locked(&exec) {
- r = drm_exec_prepare_array(&exec, gobj, num_bo_handles, 0);
+ r = drm_exec_prepare_array(&exec, gobj_read,
num_read_bo_handles, 0);
+ drm_exec_retry_on_contention(&exec);
+ if (r) {
+ drm_exec_fini(&exec);
+ goto put_gobj_write;
+ }
+
+ r = drm_exec_prepare_array(&exec, gobj_write,
num_write_bo_handles, 0);
drm_exec_retry_on_contention(&exec);
if (r) {
drm_exec_fini(&exec);
- goto put_gobj;
+ goto put_gobj_write;
}
}
@@ -611,13 +682,21 @@ int amdgpu_userq_wait_ioctl(struct drm_device *dev, void *data,
}
/* Count GEM objects fence */
- for (i = 0; i < num_bo_handles; i++) {
+ for (i = 0; i < num_read_bo_handles; i++) {
struct dma_resv_iter resv_cursor;
struct dma_fence *fence;
- dma_resv_for_each_fence(&resv_cursor, gobj[i]->resv,
-
dma_resv_usage_rw(wait_info->bo_wait_flags &
- AMDGPU_USERQ_BO_WRITE), fence)
+ dma_resv_for_each_fence(&resv_cursor,
gobj_read[i]->resv,
+ DMA_RESV_USAGE_READ, fence)
+ num_fences++;
+ }
+
+ for (i = 0; i < num_write_bo_handles; i++) {
+ struct dma_resv_iter resv_cursor;
+ struct dma_fence *fence;
+
+ dma_resv_for_each_fence(&resv_cursor,
gobj_write[i]->resv,
+ DMA_RESV_USAGE_WRITE, fence)
num_fences++;
}
@@ -643,14 +722,30 @@ int amdgpu_userq_wait_ioctl(struct drm_device *dev, void *data,
goto free_fence_info;
}
- /* Retrieve GEM objects fence */
- for (i = 0; i < num_bo_handles; i++) {
+ /* Retrieve GEM read objects fence */
+ for (i = 0; i < num_read_bo_handles; i++) {
struct dma_resv_iter resv_cursor;
struct dma_fence *fence;
- dma_resv_for_each_fence(&resv_cursor, gobj[i]->resv,
-
dma_resv_usage_rw(wait_info->bo_wait_flags &
- AMDGPU_USERQ_BO_WRITE), fence) {
+ dma_resv_for_each_fence(&resv_cursor,
gobj_read[i]->resv,
+ DMA_RESV_USAGE_READ, fence) {
+ if (WARN_ON_ONCE(num_fences >=
wait_info->num_fences)) {
+ r = -EINVAL;
+ goto free_fences;
+ }
+
+ fences[num_fences++] = fence;
+ dma_fence_get(fence);
+ }
+ }
+
+ /* Retrieve GEM write objects fence */
+ for (i = 0; i < num_write_bo_handles; i++) {
+ struct dma_resv_iter resv_cursor;
+ struct dma_fence *fence;
+
+ dma_resv_for_each_fence(&resv_cursor,
gobj_write[i]->resv,
+ DMA_RESV_USAGE_WRITE, fence) {
if (WARN_ON_ONCE(num_fences >=
wait_info->num_fences)) {
r = -EINVAL;
goto free_fences;
@@ -771,14 +866,19 @@ int amdgpu_userq_wait_ioctl(struct drm_device *dev, void
*data,
}
drm_exec_fini(&exec);
- for (i = 0; i < num_bo_handles; i++)
- drm_gem_object_put(gobj[i]);
- kfree(gobj);
+ for (i = 0; i < num_read_bo_handles; i++)
+ drm_gem_object_put(gobj_read[i]);
+ kfree(gobj_read);
+
+ for (i = 0; i < num_write_bo_handles; i++)
+ drm_gem_object_put(gobj_write[i]);
+ kfree(gobj_write);
kfree(timeline_points);
kfree(timeline_handles);
kfree(syncobj_handles);
- kfree(bo_handles);
+ kfree(bo_handles_write);
+ kfree(bo_handles_read);
return 0;
@@ -790,18 +890,24 @@ int amdgpu_userq_wait_ioctl(struct drm_device *dev, void *data,
kfree(fence_info);
exec_fini:
drm_exec_fini(&exec);
-put_gobj:
- while (entry-- > 0)
- drm_gem_object_put(gobj[entry]);
- kfree(gobj);
+put_gobj_write:
+ while (wentry-- > 0)
+ drm_gem_object_put(gobj_write[wentry]);
+ kfree(gobj_write);
+put_gobj_read:
+ while (rentry-- > 0)
+ drm_gem_object_put(gobj_read[rentry]);
+ kfree(gobj_read);
free_timeline_points:
kfree(timeline_points);
free_timeline_handles:
kfree(timeline_handles);
free_syncobj_handles:
kfree(syncobj_handles);
-free_bo_handles:
- kfree(bo_handles);
+free_bo_handles_write:
+ kfree(bo_handles_write);
+free_bo_handles_read:
+ kfree(bo_handles_read);
return r;
}
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index eeb345ddbf57..8d21e765094b 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -443,9 +443,6 @@ struct drm_amdgpu_userq_mqd_compute_gfx_v11 {
__u64 eop_va;
};
-/* dma_resv usage flag */
-#define AMDGPU_USERQ_BO_WRITE 1
-
/* userq signal/wait ioctl */
struct drm_amdgpu_userq_signal {
/**
@@ -475,20 +472,32 @@ struct drm_amdgpu_userq_signal {
*/
__u64 syncobj_point;
/**
- * @bo_handles_array: An array of GEM BO handles used by the userq
fence creation
- * IOCTL to install the created dma_fence object which can be utilized
by
+ * @bo_handles_read_array: An array of GEM read BO handles used by the
userq fence
+ * creation IOCTL to install the created dma_fence object which can be
utilized by
+ * userspace to synchronize the BO usage between user processes.
+ */
+ __u64 bo_handles_read_array;
+ /**
+ * @bo_handles_write_array: An array of GEM write BO handles used by
the userq fence
+ * creation IOCTL to install the created dma_fence object which can be
utilized by
* userspace to synchronize the BO usage between user processes.
*/
- __u64 bo_handles_array;
+ __u64 bo_handles_write_array;
+ /**
+ * @num_read_bo_handles: A count that represents the number of GEM read
BO handles in
+ * @bo_handles_read_array.
+ */
+ __u32 num_read_bo_handles;
/**
- * @num_bo_handles: A count that represents the number of GEM BO
handles in
- * @bo_handles_array.
+ * @num_write_bo_handles: A count that represents the number of GEM
write BO handles in
+ * @bo_handles_write_array.
*/
- __u32 num_bo_handles;
+ __u32 num_write_bo_handles;
/**
* @bo_flags: flags to indicate BOs synchronize for READ or WRITE
*/
__u32 bo_flags;
+ __u32 pad;
};
struct drm_amdgpu_userq_fence_info {
@@ -542,20 +551,31 @@ struct drm_amdgpu_userq_wait {
*/
__u64 syncobj_timeline_points;
/**
- * @bo_handles_array: An array of GEM BO handles defined to fetch the
fence
+ * @bo_handles_read_array: An array of GEM read BO handles defined to
fetch the fence
* wait information of every BO handles in the array.
*/
- __u64 bo_handles_array;
+ __u64 bo_handles_read_array;
+ /**
+ * @bo_handles_write_array: An array of GEM write BO handles defined to
fetch the fence
+ * wait information of every BO handles in the array.
+ */
+ __u64 bo_handles_write_array;
/**
* @num_syncobj_handles: A count that represents the number of syncobj
handles in
* @syncobj_handles_array.
*/
__u32 num_syncobj_handles;
/**
- * @num_bo_handles: A count that represents the number of GEM BO
handles in
- * @bo_handles_array.
+ * @num_read_bo_handles: A count that represents the number of GEM BO
handles in
+ * @bo_handles_read_array.
+ */
+ __u32 num_read_bo_handles;
+ /**
+ * @num_write_bo_handles: A count that represents the number of GEM BO
handles in
+ * @bo_handles_write_array.
*/
- __u32 num_bo_handles;
+ __u32 num_write_bo_handles;
+ __u32 pad;
/**
* @userq_fence_info: An array of fence information (va and value) pair
of each
* objects stored in @syncobj_handles_array and @bo_handles_array.
