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-rw-r--r--libdrm/xf86drm.c25
-rw-r--r--libdrm/xf86mm.h1
-rw-r--r--linux-core/drm_bo.c169
-rw-r--r--linux-core/drm_drv.c1
-rw-r--r--linux-core/drm_objects.h3
-rw-r--r--shared-core/drm.h27
6 files changed, 165 insertions, 61 deletions
diff --git a/libdrm/xf86drm.c b/libdrm/xf86drm.c
index 8cee4fbc..63242bce 100644
--- a/libdrm/xf86drm.c
+++ b/libdrm/xf86drm.c
@@ -2975,7 +2975,30 @@ int drmBOWaitIdle(int fd, drmBO *buf, unsigned hint)
}
return 0;
}
-
+
+int drmBOSetPin(int fd, drmBO *buf, int pin)
+{
+ struct drm_bo_set_pin_arg arg;
+ struct drm_bo_set_pin_req *req = &arg.d.req;
+ struct drm_bo_info_rep *rep = &arg.d.rep;
+ int ret = 0;
+
+ memset(&arg, 0, sizeof(arg));
+ req->handle = buf->handle;
+ req->pin = pin;
+
+ do {
+ ret = ioctl(fd, DRM_IOCTL_BO_SET_PIN, &arg);
+ } while (ret && errno == EAGAIN);
+
+ if (ret)
+ return -errno;
+
+ drmBOCopyReply(rep, buf);
+
+ return 0;
+}
+
int drmBOBusy(int fd, drmBO *buf, int *busy)
{
if (!(buf->flags & DRM_BO_FLAG_SHAREABLE) &&
diff --git a/libdrm/xf86mm.h b/libdrm/xf86mm.h
index d1e0b28f..d86644ca 100644
--- a/libdrm/xf86mm.h
+++ b/libdrm/xf86mm.h
@@ -201,6 +201,7 @@ extern int drmAddValidateItem(drmBOList *list, drmBO *buf, unsigned flags,
extern int drmBOValidateList(int fd, drmBOList *list);
extern int drmBOFenceList(int fd, drmBOList *list, unsigned fenceHandle);
extern int drmBOWaitIdle(int fd, drmBO *buf, unsigned hint);
+int drmBOSetPin(int fd, drmBO *buf, int pin);
/*
* Initialization functions.
diff --git a/linux-core/drm_bo.c b/linux-core/drm_bo.c
index 75d89e46..53885a3e 100644
--- a/linux-core/drm_bo.c
+++ b/linux-core/drm_bo.c
@@ -80,8 +80,7 @@ void drm_bo_add_to_lru(struct drm_buffer_object * bo)
DRM_ASSERT_LOCKED(&bo->dev->struct_mutex);
- if (!(bo->mem.mask & (DRM_BO_FLAG_NO_MOVE | DRM_BO_FLAG_NO_EVICT))
- || bo->mem.mem_type != bo->pinned_mem_type) {
+ if (!bo->pinned || bo->mem.mem_type != bo->pinned_mem_type) {
man = &bo->dev->bm.man[bo->mem.mem_type];
list_add_tail(&bo->lru, &man->lru);
} else {
@@ -733,7 +732,7 @@ static int drm_bo_mem_force_space(struct drm_device * dev,
atomic_inc(&entry->usage);
mutex_unlock(&dev->struct_mutex);
mutex_lock(&entry->mutex);
- BUG_ON(entry->mem.flags & (DRM_BO_FLAG_NO_MOVE | DRM_BO_FLAG_NO_EVICT));
+ BUG_ON(entry->pinned);
ret = drm_bo_evict(entry, mem_type, no_wait);
mutex_unlock(&entry->mutex);
@@ -893,18 +892,6 @@ static int drm_bo_new_mask(struct drm_buffer_object * bo,
DRM_ERROR("User buffers are not supported yet\n");
return -EINVAL;
}
- if (bo->type == drm_bo_type_fake &&
- !(new_mask & (DRM_BO_FLAG_NO_MOVE | DRM_BO_FLAG_NO_EVICT))) {
- DRM_ERROR("Fake buffers must be pinned.\n");
- return -EINVAL;
- }
-
- if ((new_mask & DRM_BO_FLAG_NO_EVICT) && !DRM_SUSER(DRM_CURPROC)) {
- DRM_ERROR
- ("DRM_BO_FLAG_NO_EVICT is only available to priviliged "
- "processes\n");
- return -EPERM;
- }
new_props = new_mask & (DRM_BO_FLAG_EXE | DRM_BO_FLAG_WRITE |
DRM_BO_FLAG_READ);
@@ -1382,6 +1369,12 @@ static int drm_buffer_object_validate(struct drm_buffer_object * bo,
return ret;
}
+ if (bo->pinned && bo->pinned_mem_type != bo->mem.mem_type) {
+ DRM_ERROR("Attempt to validate pinned buffer into different memory "
+ "type\n");
+ return -EINVAL;
+ }
+
/*
* We're switching command submission mechanism,
* or cannot simply rely on the hardware serializing for us.
@@ -1426,37 +1419,6 @@ static int drm_buffer_object_validate(struct drm_buffer_object * bo,
}
/*
- * Pinned buffers.
- */
-
- if (bo->mem.mask & (DRM_BO_FLAG_NO_EVICT | DRM_BO_FLAG_NO_MOVE)) {
- bo->pinned_mem_type = bo->mem.mem_type;
- mutex_lock(&dev->struct_mutex);
- list_del_init(&bo->pinned_lru);
- drm_bo_add_to_pinned_lru(bo);
-
- if (bo->pinned_node != bo->mem.mm_node) {
- if (bo->pinned_node != NULL)
- drm_mm_put_block(bo->pinned_node);
- bo->pinned_node = bo->mem.mm_node;
- }
-
- mutex_unlock(&dev->struct_mutex);
-
- } else if (bo->pinned_node != NULL) {
-
- mutex_lock(&dev->struct_mutex);
-
- if (bo->pinned_node != bo->mem.mm_node)
- drm_mm_put_block(bo->pinned_node);
-
- list_del_init(&bo->pinned_lru);
- bo->pinned_node = NULL;
- mutex_unlock(&dev->struct_mutex);
-
- }
-
- /*
* We might need to add a TTM.
*/
@@ -1533,6 +1495,10 @@ static int drm_bo_handle_validate(struct drm_file *file_priv,
return ret;
}
+/**
+ * Fills out the generic buffer object ioctl reply with the information for
+ * the BO with id of handle.
+ */
static int drm_bo_handle_info(struct drm_file *file_priv, uint32_t handle,
struct drm_bo_info_rep *rep)
{
@@ -1948,6 +1914,110 @@ int drm_bo_wait_idle_ioctl(struct drm_device *dev, void *data, struct drm_file *
return 0;
}
+/**
+ * Pins or unpins the given buffer object in the given memory area.
+ *
+ * Pinned buffers will not be evicted from or move within their memory area.
+ * Must be called with the hardware lock held for pinning.
+ */
+static int
+drm_bo_set_pin(struct drm_device *dev, struct drm_buffer_object *bo,
+ int pin)
+{
+ int ret = 0;
+
+ mutex_lock(&bo->mutex);
+ if (bo->pinned == pin) {
+ mutex_unlock(&bo->mutex);
+ return 0;
+ }
+
+ if (pin) {
+ ret = drm_bo_wait_unfenced(bo, 0, 0);
+ if (ret) {
+ mutex_unlock(&bo->mutex);
+ return ret;
+ }
+
+ /* Validate the buffer into its pinned location, with no pending
+ * fence.
+ */
+ ret = drm_buffer_object_validate(bo, 0, 0, 0);
+ if (ret) {
+ mutex_unlock(&bo->mutex);
+ return ret;
+ }
+
+ /* Add our buffer to the pinned list */
+ bo->pinned_mem_type = bo->mem.mem_type;
+ mutex_lock(&dev->struct_mutex);
+ list_del_init(&bo->pinned_lru);
+ drm_bo_add_to_pinned_lru(bo);
+
+ if (bo->pinned_node != bo->mem.mm_node) {
+ if (bo->pinned_node != NULL)
+ drm_mm_put_block(bo->pinned_node);
+ bo->pinned_node = bo->mem.mm_node;
+ }
+
+ mutex_unlock(&dev->struct_mutex);
+
+ } else {
+ mutex_lock(&dev->struct_mutex);
+
+ /* Remove our buffer from the pinned list */
+ if (bo->pinned_node != bo->mem.mm_node)
+ drm_mm_put_block(bo->pinned_node);
+
+ list_del_init(&bo->pinned_lru);
+ bo->pinned_node = NULL;
+ mutex_unlock(&dev->struct_mutex);
+ }
+ bo->pinned = pin;
+ mutex_unlock(&bo->mutex);
+ return 0;
+}
+
+int drm_bo_set_pin_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_bo_set_pin_arg *arg = data;
+ struct drm_bo_set_pin_req *req = &arg->d.req;
+ struct drm_bo_info_rep *rep = &arg->d.rep;
+ struct drm_buffer_object *bo;
+ int ret;
+
+ if (!dev->bm.initialized) {
+ DRM_ERROR("Buffer object manager is not initialized.\n");
+ return -EINVAL;
+ }
+
+ if (req->pin < 0 || req->pin > 1) {
+ DRM_ERROR("Bad arguments to set_pin\n");
+ return -EINVAL;
+ }
+
+ if (req->pin)
+ LOCK_TEST_WITH_RETURN(dev, file_priv);
+
+ mutex_lock(&dev->struct_mutex);
+ bo = drm_lookup_buffer_object(file_priv, req->handle, 1);
+ mutex_unlock(&dev->struct_mutex);
+ if (!bo) {
+ return -EINVAL;
+ }
+
+ ret = drm_bo_set_pin(dev, bo, req->pin);
+ if (ret) {
+ drm_bo_usage_deref_unlocked(&bo);
+ return ret;
+ }
+
+ drm_bo_fill_rep_arg(bo, rep);
+ drm_bo_usage_deref_unlocked(&bo);
+
+ return 0;
+}
/**
@@ -2009,11 +2079,10 @@ static int drm_bo_leave_list(struct drm_buffer_object * bo,
mutex_unlock(&dev->struct_mutex);
}
- if (bo->mem.flags & DRM_BO_FLAG_NO_EVICT) {
- DRM_ERROR("A DRM_BO_NO_EVICT buffer present at "
+ if (bo->pinned) {
+ DRM_ERROR("A pinned buffer was present at "
"cleanup. Removing flag and evicting.\n");
- bo->mem.flags &= ~DRM_BO_FLAG_NO_EVICT;
- bo->mem.mask &= ~DRM_BO_FLAG_NO_EVICT;
+ bo->pinned = 0;
}
if (bo->mem.mem_type == mem_type)
diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c
index cc676bda..93dfcdb5 100644
--- a/linux-core/drm_drv.c
+++ b/linux-core/drm_drv.c
@@ -147,6 +147,7 @@ static struct drm_ioctl_desc drm_ioctls[] = {
DRM_IOCTL_DEF(DRM_IOCTL_BO_OP, drm_bo_op_ioctl, DRM_AUTH),
DRM_IOCTL_DEF(DRM_IOCTL_BO_INFO, drm_bo_info_ioctl, DRM_AUTH),
DRM_IOCTL_DEF(DRM_IOCTL_BO_WAIT_IDLE, drm_bo_wait_idle_ioctl, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_IOCTL_BO_SET_PIN, drm_bo_set_pin_ioctl, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
};
#define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls )
diff --git a/linux-core/drm_objects.h b/linux-core/drm_objects.h
index e5f2b69c..64f71651 100644
--- a/linux-core/drm_objects.h
+++ b/linux-core/drm_objects.h
@@ -362,6 +362,7 @@ struct drm_buffer_object {
struct mutex mutex;
/* For pinned buffers */
+ int pinned;
struct drm_mm_node *pinned_node;
uint32_t pinned_mem_type;
struct list_head pinned_lru;
@@ -455,7 +456,7 @@ extern int drm_bo_unreference_ioctl(struct drm_device *dev, void *data, struct d
extern int drm_bo_wait_idle_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int drm_bo_info_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int drm_bo_op_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
-
+int drm_bo_set_pin_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int drm_mm_init_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int drm_mm_takedown_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
diff --git a/shared-core/drm.h b/shared-core/drm.h
index db913b1f..57d1dbec 100644
--- a/shared-core/drm.h
+++ b/shared-core/drm.h
@@ -689,14 +689,6 @@ struct drm_fence_arg {
*/
/*
- * Mask: Never evict this buffer. Not even with force. This type of buffer is only
- * available to root and must be manually removed before buffer manager shutdown
- * or lock.
- * Flags: Acknowledge
- */
-#define DRM_BO_FLAG_NO_EVICT (1ULL << 4)
-
-/*
* Mask: Require that the buffer is placed in mappable memory when validated.
* If not set the buffer may or may not be in mappable memory when validated.
* Flags: If set, the buffer is in mappable memory.
@@ -813,6 +805,16 @@ struct drm_bo_op_req {
struct drm_bo_info_req bo_req;
};
+struct drm_bo_set_pin_req {
+ /** Buffer object ID */
+ unsigned int handle;
+ /**
+ * - 0: Unpin the given buffer object.
+ * - 1: Pin the given buffer object.
+ */
+ unsigned int pin;
+};
+
/*
* Reply flags
*/
@@ -878,6 +880,13 @@ struct drm_bo_op_arg {
unsigned int pad64;
};
+struct drm_bo_set_pin_arg {
+ union {
+ struct drm_bo_set_pin_req req;
+ struct drm_bo_info_rep rep;
+ } d;
+};
+
#define DRM_BO_MEM_LOCAL 0
#define DRM_BO_MEM_TT 1
#define DRM_BO_MEM_VRAM 2
@@ -993,7 +1002,7 @@ struct drm_mm_init_arg {
#define DRM_IOCTL_BO_OP DRM_IOWR(0xd3, struct drm_bo_op_arg)
#define DRM_IOCTL_BO_INFO DRM_IOWR(0xd4, struct drm_bo_reference_info_arg)
#define DRM_IOCTL_BO_WAIT_IDLE DRM_IOWR(0xd5, struct drm_bo_map_wait_idle_arg)
-
+#define DRM_IOCTL_BO_SET_PIN DRM_IOWR(0xd6, struct drm_bo_set_pin_arg)
/*@}*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-24 03:37:03 +0000