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-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_drv.c2
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_drv.h14
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c166
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_resource.c5
4 files changed, 139 insertions, 48 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 96949b93d920..62d54b940474 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -467,6 +467,8 @@ static int vmw_driver_unload(struct drm_device *dev)
unregister_pm_notifier(&dev_priv->pm_nb);
+ if (dev_priv->ctx.cmd_bounce)
+ vfree(dev_priv->ctx.cmd_bounce);
if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
drm_irq_uninstall(dev_priv->dev);
if (dev_priv->enable_fb) {
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index fc33f3f9ebc4..ec09a3fa2ac2 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -46,8 +46,9 @@
#define VMWGFX_FILE_PAGE_OFFSET 0x00100000
#define VMWGFX_FIFO_STATIC_SIZE (1024*1024)
#define VMWGFX_MAX_RELOCATIONS 2048
-#define VMWGFX_MAX_GMRS 2048
+#define VMWGFX_MAX_VALIDATIONS 2048
#define VMWGFX_MAX_DISPLAYS 16
+#define VMWGFX_CMD_BOUNCE_INIT_SIZE 32768
#define VMW_PL_GMR TTM_PL_PRIV0
#define VMW_PL_FLAG_GMR TTM_PL_FLAG_PRIV0
@@ -74,7 +75,7 @@ struct vmw_resource {
bool avail;
void (*hw_destroy) (struct vmw_resource *res);
void (*res_free) (struct vmw_resource *res);
-
+ bool on_validate_list;
/* TODO is a generic snooper needed? */
#if 0
void (*snoop)(struct vmw_resource *res,
@@ -143,8 +144,12 @@ struct vmw_sw_context{
struct list_head validate_nodes;
struct vmw_relocation relocs[VMWGFX_MAX_RELOCATIONS];
uint32_t cur_reloc;
- struct ttm_validate_buffer val_bufs[VMWGFX_MAX_GMRS];
+ struct ttm_validate_buffer val_bufs[VMWGFX_MAX_VALIDATIONS];
uint32_t cur_val_buf;
+ uint32_t *cmd_bounce;
+ uint32_t cmd_bounce_size;
+ struct vmw_resource *resources[VMWGFX_MAX_VALIDATIONS];
+ uint32_t num_ref_resources;
};
struct vmw_legacy_display;
@@ -340,7 +345,8 @@ extern int vmw_context_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_context_check(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
- int id);
+ int id,
+ struct vmw_resource **p_res);
extern void vmw_surface_res_free(struct vmw_resource *res);
extern int vmw_surface_init(struct vmw_private *dev_priv,
struct vmw_surface *srf,
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
index 8ca3ddb2ebc3..c6ff0e40f201 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -44,10 +44,36 @@ static int vmw_cmd_ok(struct vmw_private *dev_priv,
return 0;
}
+
+static int vmw_resource_to_validate_list(struct vmw_sw_context *sw_context,
+ struct vmw_resource **p_res)
+{
+ int ret = 0;
+ struct vmw_resource *res = *p_res;
+
+ if (!res->on_validate_list) {
+ if (sw_context->num_ref_resources >= VMWGFX_MAX_VALIDATIONS) {
+ DRM_ERROR("Too many resources referenced in "
+ "command stream.\n");
+ ret = -ENOMEM;
+ goto out;
+ }
+ sw_context->resources[sw_context->num_ref_resources++] = res;
+ res->on_validate_list = true;
+ return 0;
+ }
+
+out:
+ vmw_resource_unreference(p_res);
+ return ret;
+}
+
static int vmw_cmd_cid_check(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
SVGA3dCmdHeader *header)
{
+ struct vmw_resource *ctx;
+
struct vmw_cid_cmd {
SVGA3dCmdHeader header;
__le32 cid;
@@ -58,7 +84,8 @@ static int vmw_cmd_cid_check(struct vmw_private *dev_priv,
if (likely(sw_context->cid_valid && cmd->cid == sw_context->last_cid))
return 0;
- ret = vmw_context_check(dev_priv, sw_context->tfile, cmd->cid);
+ ret = vmw_context_check(dev_priv, sw_context->tfile, cmd->cid,
+ &ctx);
if (unlikely(ret != 0)) {
DRM_ERROR("Could not find or use context %u\n",
(unsigned) cmd->cid);
@@ -67,39 +94,43 @@ static int vmw_cmd_cid_check(struct vmw_private *dev_priv,
sw_context->last_cid = cmd->cid;
sw_context->cid_valid = true;
-
- return 0;
+ return vmw_resource_to_validate_list(sw_context, &ctx);
}
static int vmw_cmd_sid_check(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
uint32_t *sid)
{
+ struct vmw_surface *srf;
+ int ret;
+ struct vmw_resource *res;
+
if (*sid == SVGA3D_INVALID_ID)
return 0;
- if (unlikely((!sw_context->sid_valid ||
- *sid != sw_context->last_sid))) {
- int real_id;
- int ret = vmw_surface_check(dev_priv, sw_context->tfile,
- *sid, &real_id);
-
- if (unlikely(ret != 0)) {
- DRM_ERROR("Could ot find or use surface 0x%08x "
- "address 0x%08lx\n",
- (unsigned int) *sid,
- (unsigned long) sid);
- return ret;
- }
-
- sw_context->last_sid = *sid;
- sw_context->sid_valid = true;
- *sid = real_id;
- sw_context->sid_translation = real_id;
- } else
+ if (likely((sw_context->sid_valid &&
+ *sid == sw_context->last_sid))) {
*sid = sw_context->sid_translation;
+ return 0;
+ }
- return 0;
+ ret = vmw_user_surface_lookup_handle(dev_priv, sw_context->tfile,
+ *sid, &srf);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("Could ot find or use surface 0x%08x "
+ "address 0x%08lx\n",
+ (unsigned int) *sid,
+ (unsigned long) sid);
+ return ret;
+ }
+
+ sw_context->last_sid = *sid;
+ sw_context->sid_valid = true;
+ sw_context->sid_translation = srf->res.id;
+ *sid = sw_context->sid_translation;
+
+ res = &srf->res;
+ return vmw_resource_to_validate_list(sw_context, &res);
}
@@ -213,7 +244,7 @@ static int vmw_translate_guest_ptr(struct vmw_private *dev_priv,
reloc->location = ptr;
cur_validate_node = vmw_dmabuf_validate_node(bo, sw_context->cur_val_buf);
- if (unlikely(cur_validate_node >= VMWGFX_MAX_GMRS)) {
+ if (unlikely(cur_validate_node >= VMWGFX_MAX_VALIDATIONS)) {
DRM_ERROR("Max number of DMA buffers per submission"
" exceeded.\n");
ret = -EINVAL;
@@ -303,6 +334,7 @@ static int vmw_cmd_dma(struct vmw_private *dev_priv,
SVGA3dCmdSurfaceDMA dma;
} *cmd;
int ret;
+ struct vmw_resource *res;
cmd = container_of(header, struct vmw_dma_cmd, header);
ret = vmw_translate_guest_ptr(dev_priv, sw_context,
@@ -319,17 +351,16 @@ static int vmw_cmd_dma(struct vmw_private *dev_priv,
goto out_no_reloc;
}
- /**
+ /*
* Patch command stream with device SID.
*/
-
cmd->dma.host.sid = srf->res.id;
vmw_kms_cursor_snoop(srf, sw_context->tfile, bo, header);
- /**
- * FIXME: May deadlock here when called from the
- * command parsing code.
- */
- vmw_surface_unreference(&srf);
+
+ vmw_dmabuf_unreference(&vmw_bo);
+
+ res = &srf->res;
+ return vmw_resource_to_validate_list(sw_context, &res);
out_no_reloc:
vmw_dmabuf_unreference(&vmw_bo);
@@ -501,8 +532,9 @@ out_err:
static int vmw_cmd_check_all(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
- void *buf, uint32_t size)
+ uint32_t size)
{
+ void *buf = sw_context->cmd_bounce;
int32_t cur_size = size;
int ret;
@@ -551,7 +583,11 @@ static void vmw_apply_relocations(struct vmw_sw_context *sw_context)
static void vmw_clear_validations(struct vmw_sw_context *sw_context)
{
struct ttm_validate_buffer *entry, *next;
+ uint32_t i = sw_context->num_ref_resources;
+ /*
+ * Drop references to DMA buffers held during command submission.
+ */
list_for_each_entry_safe(entry, next, &sw_context->validate_nodes,
head) {
list_del(&entry->head);
@@ -560,6 +596,14 @@ static void vmw_clear_validations(struct vmw_sw_context *sw_context)
sw_context->cur_val_buf--;
}
BUG_ON(sw_context->cur_val_buf != 0);
+
+ /*
+ * Drop references to resources held during command submission.
+ */
+ while (i-- > 0) {
+ sw_context->resources[i]->on_validate_list = false;
+ vmw_resource_unreference(&sw_context->resources[i]);
+ }
}
static int vmw_validate_single_buffer(struct vmw_private *dev_priv,
@@ -603,6 +647,35 @@ static int vmw_validate_buffers(struct vmw_private *dev_priv,
return 0;
}
+static int vmw_resize_cmd_bounce(struct vmw_sw_context *sw_context,
+ uint32_t size)
+{
+ if (likely(sw_context->cmd_bounce_size >= size))
+ return 0;
+
+ if (sw_context->cmd_bounce_size == 0)
+ sw_context->cmd_bounce_size = VMWGFX_CMD_BOUNCE_INIT_SIZE;
+
+ while (sw_context->cmd_bounce_size < size) {
+ sw_context->cmd_bounce_size =
+ PAGE_ALIGN(sw_context->cmd_bounce_size +
+ (sw_context->cmd_bounce_size >> 1));
+ }
+
+ if (sw_context->cmd_bounce != NULL)
+ vfree(sw_context->cmd_bounce);
+
+ sw_context->cmd_bounce = vmalloc(sw_context->cmd_bounce_size);
+
+ if (sw_context->cmd_bounce == NULL) {
+ DRM_ERROR("Failed to allocate command bounce buffer.\n");
+ sw_context->cmd_bounce_size = 0;
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
@@ -627,20 +700,18 @@ int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
goto out_no_cmd_mutex;
}
- cmd = vmw_fifo_reserve(dev_priv, arg->command_size);
- if (unlikely(cmd == NULL)) {
- DRM_ERROR("Failed reserving fifo space for commands.\n");
- ret = -ENOMEM;
+ ret = vmw_resize_cmd_bounce(sw_context, arg->command_size);
+ if (unlikely(ret != 0))
goto out_unlock;
- }
user_cmd = (void __user *)(unsigned long)arg->commands;
- ret = copy_from_user(cmd, user_cmd, arg->command_size);
+ ret = copy_from_user(sw_context->cmd_bounce,
+ user_cmd, arg->command_size);
if (unlikely(ret != 0)) {
ret = -EFAULT;
DRM_ERROR("Failed copying commands.\n");
- goto out_commit;
+ goto out_unlock;
}
sw_context->tfile = vmw_fpriv(file_priv)->tfile;
@@ -648,12 +719,14 @@ int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
sw_context->sid_valid = false;
sw_context->cur_reloc = 0;
sw_context->cur_val_buf = 0;
+ sw_context->num_ref_resources = 0;
INIT_LIST_HEAD(&sw_context->validate_nodes);
- ret = vmw_cmd_check_all(dev_priv, sw_context, cmd, arg->command_size);
+ ret = vmw_cmd_check_all(dev_priv, sw_context, arg->command_size);
if (unlikely(ret != 0))
goto out_err;
+
ret = ttm_eu_reserve_buffers(&sw_context->validate_nodes);
if (unlikely(ret != 0))
goto out_err;
@@ -669,9 +742,17 @@ int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
arg->throttle_us);
if (unlikely(ret != 0))
- goto out_err;
+ goto out_throttle;
+ }
+
+ cmd = vmw_fifo_reserve(dev_priv, arg->command_size);
+ if (unlikely(cmd == NULL)) {
+ DRM_ERROR("Failed reserving fifo space for commands.\n");
+ ret = -ENOMEM;
+ goto out_err;
}
+ memcpy(cmd, sw_context->cmd_bounce, arg->command_size);
vmw_fifo_commit(dev_priv, arg->command_size);
ret = vmw_fifo_send_fence(dev_priv, &sequence);
@@ -708,10 +789,9 @@ int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
return 0;
out_err:
vmw_free_relocations(sw_context);
+out_throttle:
ttm_eu_backoff_reservation(&sw_context->validate_nodes);
vmw_clear_validations(sw_context);
-out_commit:
- vmw_fifo_commit(dev_priv, 0);
out_unlock:
mutex_unlock(&dev_priv->cmdbuf_mutex);
out_no_cmd_mutex:
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
index bfe1bcce7f8a..dc8904a1c1e1 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
@@ -364,7 +364,8 @@ out_err:
int vmw_context_check(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
- int id)
+ int id,
+ struct vmw_resource **p_res)
{
struct vmw_resource *res;
int ret = 0;
@@ -376,6 +377,8 @@ int vmw_context_check(struct vmw_private *dev_priv,
container_of(res, struct vmw_user_context, res);
if (ctx->base.tfile != tfile && !ctx->base.shareable)
ret = -EPERM;
+ if (p_res)
+ *p_res = vmw_resource_reference(res);
} else
ret = -EINVAL;
read_unlock(&dev_priv->resource_lock);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 09:09:55 +0000