drm/ttm/vmwgfx: Have TTM manage the validation sequence.
Rather than having the driver supply the validation sequence, leave that
responsibility to TTM. This saves some confusion and a function argument.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 551a5d3..25e4c2a 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1539,6 +1539,7 @@
bdev->dev_mapping = NULL;
bdev->glob = glob;
bdev->need_dma32 = need_dma32;
+ bdev->val_seq = 0;
spin_lock_init(&bdev->fence_lock);
mutex_lock(&glob->device_list_mutex);
list_add_tail(&bdev->device_list, &glob->device_list);
diff --git a/drivers/gpu/drm/ttm/ttm_execbuf_util.c b/drivers/gpu/drm/ttm/ttm_execbuf_util.c
index b6da65c..3832fe1 100644
--- a/drivers/gpu/drm/ttm/ttm_execbuf_util.c
+++ b/drivers/gpu/drm/ttm/ttm_execbuf_util.c
@@ -126,11 +126,12 @@
* buffers in different orders.
*/
-int ttm_eu_reserve_buffers(struct list_head *list, uint32_t val_seq)
+int ttm_eu_reserve_buffers(struct list_head *list)
{
struct ttm_bo_global *glob;
struct ttm_validate_buffer *entry;
int ret;
+ uint32_t val_seq;
if (list_empty(list))
return 0;
@@ -146,6 +147,8 @@
retry:
spin_lock(&glob->lru_lock);
+ val_seq = entry->bo->bdev->val_seq++;
+
list_for_each_entry(entry, list, head) {
struct ttm_buffer_object *bo = entry->bo;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index e7a58d0..10fc01f 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -264,7 +264,6 @@
*/
struct vmw_sw_context ctx;
- uint32_t val_seq;
struct mutex cmdbuf_mutex;
/**
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
index 76954e3..41b95ed 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -653,8 +653,7 @@
ret = vmw_cmd_check_all(dev_priv, sw_context, cmd, arg->command_size);
if (unlikely(ret != 0))
goto out_err;
- ret = ttm_eu_reserve_buffers(&sw_context->validate_nodes,
- dev_priv->val_seq++);
+ ret = ttm_eu_reserve_buffers(&sw_context->validate_nodes);
if (unlikely(ret != 0))
goto out_err;
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index cfb9ca4..e3b2e24 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -515,6 +515,7 @@
* @addr_space_mm: Range manager for the device address space.
* lru_lock: Spinlock that protects the buffer+device lru lists and
* ddestroy lists.
+ * @val_seq: Current validation sequence.
* @nice_mode: Try nicely to wait for buffer idle when cleaning a manager.
* If a GPU lockup has been detected, this is forced to 0.
* @dev_mapping: A pointer to the struct address_space representing the
@@ -544,6 +545,7 @@
* Protected by the global:lru lock.
*/
struct list_head ddestroy;
+ uint32_t val_seq;
/*
* Protected by load / firstopen / lastclose /unload sync.
diff --git a/include/drm/ttm/ttm_execbuf_util.h b/include/drm/ttm/ttm_execbuf_util.h
index 535ab00..26cc7f9 100644
--- a/include/drm/ttm/ttm_execbuf_util.h
+++ b/include/drm/ttm/ttm_execbuf_util.h
@@ -72,7 +72,6 @@
* function ttm_eu_reserve_buffers
*
* @list: thread private list of ttm_validate_buffer structs.
- * @val_seq: A unique sequence number.
*
* Tries to reserve bos pointed to by the list entries for validation.
* If the function returns 0, all buffers are marked as "unfenced",
@@ -94,7 +93,7 @@
* has failed.
*/
-extern int ttm_eu_reserve_buffers(struct list_head *list, uint32_t val_seq);
+extern int ttm_eu_reserve_buffers(struct list_head *list);
/**
* function ttm_eu_fence_buffer_objects.