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authorDave Airlie <airlied@redhat.com>2018-07-10 04:05:46 +0300
committerDave Airlie <airlied@redhat.com>2018-07-10 04:10:34 +0300
commit8038d2a9e6cde825be46359ad98a084da92294fe (patch)
treebeb2c8b3a6bce8193f395ff50b221fad6ae2cd7b /drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
parentba7ca97d73b437eec883eba785495b8c9759b5f2 (diff)
parent812a954b787ab5a91d62e597a36351628b08d079 (diff)
downloadlinux-8038d2a9e6cde825be46359ad98a084da92294fe.tar.xz
Merge tag 'vmwgfx-next-4.19-2' of git://people.freedesktop.org/~thomash/linux into drm-next
A series of cleanups / reorganizations and modesetting changes that mostly target atomic state validation. [airlied: conflicts with SPDX stuff in amdgpu tree] Signed-off-by: Dave Airlie <airlied@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/1a88485e-e509-b00e-8485-19194f074115@vmware.com
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_resource.c')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_resource.c705
1 files changed, 59 insertions, 646 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
index 3063a3e4bd40..92003ea5a219 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
@@ -27,7 +27,6 @@
#include "vmwgfx_drv.h"
#include <drm/vmwgfx_drm.h>
-#include <drm/ttm/ttm_object.h>
#include <drm/ttm/ttm_placement.h>
#include <drm/drmP.h>
#include "vmwgfx_resource_priv.h"
@@ -35,29 +34,6 @@
#define VMW_RES_EVICT_ERR_COUNT 10
-struct vmw_user_dma_buffer {
- struct ttm_prime_object prime;
- struct vmw_dma_buffer dma;
-};
-
-struct vmw_bo_user_rep {
- uint32_t handle;
- uint64_t map_handle;
-};
-
-static inline struct vmw_dma_buffer *
-vmw_dma_buffer(struct ttm_buffer_object *bo)
-{
- return container_of(bo, struct vmw_dma_buffer, base);
-}
-
-static inline struct vmw_user_dma_buffer *
-vmw_user_dma_buffer(struct ttm_buffer_object *bo)
-{
- struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
- return container_of(vmw_bo, struct vmw_user_dma_buffer, dma);
-}
-
struct vmw_resource *vmw_resource_reference(struct vmw_resource *res)
{
kref_get(&res->kref);
@@ -116,7 +92,7 @@ static void vmw_resource_release(struct kref *kref)
res->backup_dirty = false;
list_del_init(&res->mob_head);
ttm_bo_unreserve(bo);
- vmw_dmabuf_unreference(&res->backup);
+ vmw_bo_unreference(&res->backup);
}
if (likely(res->hw_destroy != NULL)) {
@@ -287,7 +263,7 @@ out_bad_resource:
}
/**
- * Helper function that looks either a surface or dmabuf.
+ * Helper function that looks either a surface or bo.
*
* The pointer this pointed at by out_surf and out_buf needs to be null.
*/
@@ -295,7 +271,7 @@ int vmw_user_lookup_handle(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
uint32_t handle,
struct vmw_surface **out_surf,
- struct vmw_dma_buffer **out_buf)
+ struct vmw_buffer_object **out_buf)
{
struct vmw_resource *res;
int ret;
@@ -311,513 +287,11 @@ int vmw_user_lookup_handle(struct vmw_private *dev_priv,
}
*out_surf = NULL;
- ret = vmw_user_dmabuf_lookup(tfile, handle, out_buf, NULL);
+ ret = vmw_user_bo_lookup(tfile, handle, out_buf, NULL);
return ret;
}
/**
- * Buffer management.
- */
-
-/**
- * vmw_dmabuf_acc_size - Calculate the pinned memory usage of buffers
- *
- * @dev_priv: Pointer to a struct vmw_private identifying the device.
- * @size: The requested buffer size.
- * @user: Whether this is an ordinary dma buffer or a user dma buffer.
- */
-static size_t vmw_dmabuf_acc_size(struct vmw_private *dev_priv, size_t size,
- bool user)
-{
- static size_t struct_size, user_struct_size;
- size_t num_pages = PAGE_ALIGN(size) >> PAGE_SHIFT;
- size_t page_array_size = ttm_round_pot(num_pages * sizeof(void *));
-
- if (unlikely(struct_size == 0)) {
- size_t backend_size = ttm_round_pot(vmw_tt_size);
-
- struct_size = backend_size +
- ttm_round_pot(sizeof(struct vmw_dma_buffer));
- user_struct_size = backend_size +
- ttm_round_pot(sizeof(struct vmw_user_dma_buffer));
- }
-
- if (dev_priv->map_mode == vmw_dma_alloc_coherent)
- page_array_size +=
- ttm_round_pot(num_pages * sizeof(dma_addr_t));
-
- return ((user) ? user_struct_size : struct_size) +
- page_array_size;
-}
-
-void vmw_dmabuf_bo_free(struct ttm_buffer_object *bo)
-{
- struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
-
- vmw_dma_buffer_unmap(vmw_bo);
- kfree(vmw_bo);
-}
-
-static void vmw_user_dmabuf_destroy(struct ttm_buffer_object *bo)
-{
- struct vmw_user_dma_buffer *vmw_user_bo = vmw_user_dma_buffer(bo);
-
- vmw_dma_buffer_unmap(&vmw_user_bo->dma);
- ttm_prime_object_kfree(vmw_user_bo, prime);
-}
-
-int vmw_dmabuf_init(struct vmw_private *dev_priv,
- struct vmw_dma_buffer *vmw_bo,
- size_t size, struct ttm_placement *placement,
- bool interruptible,
- void (*bo_free) (struct ttm_buffer_object *bo))
-{
- struct ttm_bo_device *bdev = &dev_priv->bdev;
- size_t acc_size;
- int ret;
- bool user = (bo_free == &vmw_user_dmabuf_destroy);
-
- BUG_ON(!bo_free && (!user && (bo_free != vmw_dmabuf_bo_free)));
-
- acc_size = vmw_dmabuf_acc_size(dev_priv, size, user);
- memset(vmw_bo, 0, sizeof(*vmw_bo));
-
- INIT_LIST_HEAD(&vmw_bo->res_list);
-
- ret = ttm_bo_init(bdev, &vmw_bo->base, size,
- ttm_bo_type_device, placement,
- 0, interruptible, acc_size,
- NULL, NULL, bo_free);
- return ret;
-}
-
-static void vmw_user_dmabuf_release(struct ttm_base_object **p_base)
-{
- struct vmw_user_dma_buffer *vmw_user_bo;
- struct ttm_base_object *base = *p_base;
- struct ttm_buffer_object *bo;
-
- *p_base = NULL;
-
- if (unlikely(base == NULL))
- return;
-
- vmw_user_bo = container_of(base, struct vmw_user_dma_buffer,
- prime.base);
- bo = &vmw_user_bo->dma.base;
- ttm_bo_unref(&bo);
-}
-
-static void vmw_user_dmabuf_ref_obj_release(struct ttm_base_object *base,
- enum ttm_ref_type ref_type)
-{
- struct vmw_user_dma_buffer *user_bo;
- user_bo = container_of(base, struct vmw_user_dma_buffer, prime.base);
-
- switch (ref_type) {
- case TTM_REF_SYNCCPU_WRITE:
- ttm_bo_synccpu_write_release(&user_bo->dma.base);
- break;
- default:
- BUG();
- }
-}
-
-/**
- * vmw_user_dmabuf_alloc - Allocate a user dma buffer
- *
- * @dev_priv: Pointer to a struct device private.
- * @tfile: Pointer to a struct ttm_object_file on which to register the user
- * object.
- * @size: Size of the dma buffer.
- * @shareable: Boolean whether the buffer is shareable with other open files.
- * @handle: Pointer to where the handle value should be assigned.
- * @p_dma_buf: Pointer to where the refcounted struct vmw_dma_buffer pointer
- * should be assigned.
- */
-int vmw_user_dmabuf_alloc(struct vmw_private *dev_priv,
- struct ttm_object_file *tfile,
- uint32_t size,
- bool shareable,
- uint32_t *handle,
- struct vmw_dma_buffer **p_dma_buf,
- struct ttm_base_object **p_base)
-{
- struct vmw_user_dma_buffer *user_bo;
- struct ttm_buffer_object *tmp;
- int ret;
-
- user_bo = kzalloc(sizeof(*user_bo), GFP_KERNEL);
- if (unlikely(!user_bo)) {
- DRM_ERROR("Failed to allocate a buffer.\n");
- return -ENOMEM;
- }
-
- ret = vmw_dmabuf_init(dev_priv, &user_bo->dma, size,
- (dev_priv->has_mob) ?
- &vmw_sys_placement :
- &vmw_vram_sys_placement, true,
- &vmw_user_dmabuf_destroy);
- if (unlikely(ret != 0))
- return ret;
-
- tmp = ttm_bo_reference(&user_bo->dma.base);
- ret = ttm_prime_object_init(tfile,
- size,
- &user_bo->prime,
- shareable,
- ttm_buffer_type,
- &vmw_user_dmabuf_release,
- &vmw_user_dmabuf_ref_obj_release);
- if (unlikely(ret != 0)) {
- ttm_bo_unref(&tmp);
- goto out_no_base_object;
- }
-
- *p_dma_buf = &user_bo->dma;
- if (p_base) {
- *p_base = &user_bo->prime.base;
- kref_get(&(*p_base)->refcount);
- }
- *handle = user_bo->prime.base.hash.key;
-
-out_no_base_object:
- return ret;
-}
-
-/**
- * vmw_user_dmabuf_verify_access - verify access permissions on this
- * buffer object.
- *
- * @bo: Pointer to the buffer object being accessed
- * @tfile: Identifying the caller.
- */
-int vmw_user_dmabuf_verify_access(struct ttm_buffer_object *bo,
- struct ttm_object_file *tfile)
-{
- struct vmw_user_dma_buffer *vmw_user_bo;
-
- if (unlikely(bo->destroy != vmw_user_dmabuf_destroy))
- return -EPERM;
-
- vmw_user_bo = vmw_user_dma_buffer(bo);
-
- /* Check that the caller has opened the object. */
- if (likely(ttm_ref_object_exists(tfile, &vmw_user_bo->prime.base)))
- return 0;
-
- DRM_ERROR("Could not grant buffer access.\n");
- return -EPERM;
-}
-
-/**
- * vmw_user_dmabuf_synccpu_grab - Grab a struct vmw_user_dma_buffer for cpu
- * access, idling previous GPU operations on the buffer and optionally
- * blocking it for further command submissions.
- *
- * @user_bo: Pointer to the buffer object being grabbed for CPU access
- * @tfile: Identifying the caller.
- * @flags: Flags indicating how the grab should be performed.
- *
- * A blocking grab will be automatically released when @tfile is closed.
- */
-static int vmw_user_dmabuf_synccpu_grab(struct vmw_user_dma_buffer *user_bo,
- struct ttm_object_file *tfile,
- uint32_t flags)
-{
- struct ttm_buffer_object *bo = &user_bo->dma.base;
- bool existed;
- int ret;
-
- if (flags & drm_vmw_synccpu_allow_cs) {
- bool nonblock = !!(flags & drm_vmw_synccpu_dontblock);
- long lret;
-
- lret = reservation_object_wait_timeout_rcu(bo->resv, true, true,
- nonblock ? 0 : MAX_SCHEDULE_TIMEOUT);
- if (!lret)
- return -EBUSY;
- else if (lret < 0)
- return lret;
- return 0;
- }
-
- ret = ttm_bo_synccpu_write_grab
- (bo, !!(flags & drm_vmw_synccpu_dontblock));
- if (unlikely(ret != 0))
- return ret;
-
- ret = ttm_ref_object_add(tfile, &user_bo->prime.base,
- TTM_REF_SYNCCPU_WRITE, &existed, false);
- if (ret != 0 || existed)
- ttm_bo_synccpu_write_release(&user_bo->dma.base);
-
- return ret;
-}
-
-/**
- * vmw_user_dmabuf_synccpu_release - Release a previous grab for CPU access,
- * and unblock command submission on the buffer if blocked.
- *
- * @handle: Handle identifying the buffer object.
- * @tfile: Identifying the caller.
- * @flags: Flags indicating the type of release.
- */
-static int vmw_user_dmabuf_synccpu_release(uint32_t handle,
- struct ttm_object_file *tfile,
- uint32_t flags)
-{
- if (!(flags & drm_vmw_synccpu_allow_cs))
- return ttm_ref_object_base_unref(tfile, handle,
- TTM_REF_SYNCCPU_WRITE);
-
- return 0;
-}
-
-/**
- * vmw_user_dmabuf_synccpu_release - ioctl function implementing the synccpu
- * functionality.
- *
- * @dev: Identifies the drm device.
- * @data: Pointer to the ioctl argument.
- * @file_priv: Identifies the caller.
- *
- * This function checks the ioctl arguments for validity and calls the
- * relevant synccpu functions.
- */
-int vmw_user_dmabuf_synccpu_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_vmw_synccpu_arg *arg =
- (struct drm_vmw_synccpu_arg *) data;
- struct vmw_dma_buffer *dma_buf;
- struct vmw_user_dma_buffer *user_bo;
- struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
- struct ttm_base_object *buffer_base;
- int ret;
-
- if ((arg->flags & (drm_vmw_synccpu_read | drm_vmw_synccpu_write)) == 0
- || (arg->flags & ~(drm_vmw_synccpu_read | drm_vmw_synccpu_write |
- drm_vmw_synccpu_dontblock |
- drm_vmw_synccpu_allow_cs)) != 0) {
- DRM_ERROR("Illegal synccpu flags.\n");
- return -EINVAL;
- }
-
- switch (arg->op) {
- case drm_vmw_synccpu_grab:
- ret = vmw_user_dmabuf_lookup(tfile, arg->handle, &dma_buf,
- &buffer_base);
- if (unlikely(ret != 0))
- return ret;
-
- user_bo = container_of(dma_buf, struct vmw_user_dma_buffer,
- dma);
- ret = vmw_user_dmabuf_synccpu_grab(user_bo, tfile, arg->flags);
- vmw_dmabuf_unreference(&dma_buf);
- ttm_base_object_unref(&buffer_base);
- if (unlikely(ret != 0 && ret != -ERESTARTSYS &&
- ret != -EBUSY)) {
- DRM_ERROR("Failed synccpu grab on handle 0x%08x.\n",
- (unsigned int) arg->handle);
- return ret;
- }
- break;
- case drm_vmw_synccpu_release:
- ret = vmw_user_dmabuf_synccpu_release(arg->handle, tfile,
- arg->flags);
- if (unlikely(ret != 0)) {
- DRM_ERROR("Failed synccpu release on handle 0x%08x.\n",
- (unsigned int) arg->handle);
- return ret;
- }
- break;
- default:
- DRM_ERROR("Invalid synccpu operation.\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
-int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct vmw_private *dev_priv = vmw_priv(dev);
- union drm_vmw_alloc_dmabuf_arg *arg =
- (union drm_vmw_alloc_dmabuf_arg *)data;
- struct drm_vmw_alloc_dmabuf_req *req = &arg->req;
- struct drm_vmw_dmabuf_rep *rep = &arg->rep;
- struct vmw_dma_buffer *dma_buf;
- uint32_t handle;
- int ret;
-
- ret = ttm_read_lock(&dev_priv->reservation_sem, true);
- if (unlikely(ret != 0))
- return ret;
-
- ret = vmw_user_dmabuf_alloc(dev_priv, vmw_fpriv(file_priv)->tfile,
- req->size, false, &handle, &dma_buf,
- NULL);
- if (unlikely(ret != 0))
- goto out_no_dmabuf;
-
- rep->handle = handle;
- rep->map_handle = drm_vma_node_offset_addr(&dma_buf->base.vma_node);
- rep->cur_gmr_id = handle;
- rep->cur_gmr_offset = 0;
-
- vmw_dmabuf_unreference(&dma_buf);
-
-out_no_dmabuf:
- ttm_read_unlock(&dev_priv->reservation_sem);
-
- return ret;
-}
-
-int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_vmw_unref_dmabuf_arg *arg =
- (struct drm_vmw_unref_dmabuf_arg *)data;
-
- return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
- arg->handle,
- TTM_REF_USAGE);
-}
-
-int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
- uint32_t handle, struct vmw_dma_buffer **out,
- struct ttm_base_object **p_base)
-{
- struct vmw_user_dma_buffer *vmw_user_bo;
- struct ttm_base_object *base;
-
- base = ttm_base_object_lookup(tfile, handle);
- if (unlikely(base == NULL)) {
- pr_err("Invalid buffer object handle 0x%08lx\n",
- (unsigned long)handle);
- return -ESRCH;
- }
-
- if (unlikely(ttm_base_object_type(base) != ttm_buffer_type)) {
- ttm_base_object_unref(&base);
- pr_err("Invalid buffer object handle 0x%08lx\n",
- (unsigned long)handle);
- return -EINVAL;
- }
-
- vmw_user_bo = container_of(base, struct vmw_user_dma_buffer,
- prime.base);
- (void)ttm_bo_reference(&vmw_user_bo->dma.base);
- if (p_base)
- *p_base = base;
- else
- ttm_base_object_unref(&base);
- *out = &vmw_user_bo->dma;
-
- return 0;
-}
-
-int vmw_user_dmabuf_reference(struct ttm_object_file *tfile,
- struct vmw_dma_buffer *dma_buf,
- uint32_t *handle)
-{
- struct vmw_user_dma_buffer *user_bo;
-
- if (dma_buf->base.destroy != vmw_user_dmabuf_destroy)
- return -EINVAL;
-
- user_bo = container_of(dma_buf, struct vmw_user_dma_buffer, dma);
-
- *handle = user_bo->prime.base.hash.key;
- return ttm_ref_object_add(tfile, &user_bo->prime.base,
- TTM_REF_USAGE, NULL, false);
-}
-
-/**
- * vmw_dumb_create - Create a dumb kms buffer
- *
- * @file_priv: Pointer to a struct drm_file identifying the caller.
- * @dev: Pointer to the drm device.
- * @args: Pointer to a struct drm_mode_create_dumb structure
- *
- * This is a driver callback for the core drm create_dumb functionality.
- * Note that this is very similar to the vmw_dmabuf_alloc ioctl, except
- * that the arguments have a different format.
- */
-int vmw_dumb_create(struct drm_file *file_priv,
- struct drm_device *dev,
- struct drm_mode_create_dumb *args)
-{
- struct vmw_private *dev_priv = vmw_priv(dev);
- struct vmw_dma_buffer *dma_buf;
- int ret;
-
- args->pitch = args->width * ((args->bpp + 7) / 8);
- args->size = args->pitch * args->height;
-
- ret = ttm_read_lock(&dev_priv->reservation_sem, true);
- if (unlikely(ret != 0))
- return ret;
-
- ret = vmw_user_dmabuf_alloc(dev_priv, vmw_fpriv(file_priv)->tfile,
- args->size, false, &args->handle,
- &dma_buf, NULL);
- if (unlikely(ret != 0))
- goto out_no_dmabuf;
-
- vmw_dmabuf_unreference(&dma_buf);
-out_no_dmabuf:
- ttm_read_unlock(&dev_priv->reservation_sem);
- return ret;
-}
-
-/**
- * vmw_dumb_map_offset - Return the address space offset of a dumb buffer
- *
- * @file_priv: Pointer to a struct drm_file identifying the caller.
- * @dev: Pointer to the drm device.
- * @handle: Handle identifying the dumb buffer.
- * @offset: The address space offset returned.
- *
- * This is a driver callback for the core drm dumb_map_offset functionality.
- */
-int vmw_dumb_map_offset(struct drm_file *file_priv,
- struct drm_device *dev, uint32_t handle,
- uint64_t *offset)
-{
- struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
- struct vmw_dma_buffer *out_buf;
- int ret;
-
- ret = vmw_user_dmabuf_lookup(tfile, handle, &out_buf, NULL);
- if (ret != 0)
- return -EINVAL;
-
- *offset = drm_vma_node_offset_addr(&out_buf->base.vma_node);
- vmw_dmabuf_unreference(&out_buf);
- return 0;
-}
-
-/**
- * vmw_dumb_destroy - Destroy a dumb boffer
- *
- * @file_priv: Pointer to a struct drm_file identifying the caller.
- * @dev: Pointer to the drm device.
- * @handle: Handle identifying the dumb buffer.
- *
- * This is a driver callback for the core drm dumb_destroy functionality.
- */
-int vmw_dumb_destroy(struct drm_file *file_priv,
- struct drm_device *dev,
- uint32_t handle)
-{
- return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
- handle, TTM_REF_USAGE);
-}
-
-/**
* vmw_resource_buf_alloc - Allocate a backup buffer for a resource.
*
* @res: The resource for which to allocate a backup buffer.
@@ -829,7 +303,7 @@ static int vmw_resource_buf_alloc(struct vmw_resource *res,
{
unsigned long size =
(res->backup_size + PAGE_SIZE - 1) & PAGE_MASK;
- struct vmw_dma_buffer *backup;
+ struct vmw_buffer_object *backup;
int ret;
if (likely(res->backup)) {
@@ -841,16 +315,16 @@ static int vmw_resource_buf_alloc(struct vmw_resource *res,
if (unlikely(!backup))
return -ENOMEM;
- ret = vmw_dmabuf_init(res->dev_priv, backup, res->backup_size,
+ ret = vmw_bo_init(res->dev_priv, backup, res->backup_size,
res->func->backup_placement,
interruptible,
- &vmw_dmabuf_bo_free);
+ &vmw_bo_bo_free);
if (unlikely(ret != 0))
- goto out_no_dmabuf;
+ goto out_no_bo;
res->backup = backup;
-out_no_dmabuf:
+out_no_bo:
return ret;
}
@@ -919,7 +393,7 @@ out_bind_failed:
*/
void vmw_resource_unreserve(struct vmw_resource *res,
bool switch_backup,
- struct vmw_dma_buffer *new_backup,
+ struct vmw_buffer_object *new_backup,
unsigned long new_backup_offset)
{
struct vmw_private *dev_priv = res->dev_priv;
@@ -931,11 +405,11 @@ void vmw_resource_unreserve(struct vmw_resource *res,
if (res->backup) {
lockdep_assert_held(&res->backup->base.resv->lock.base);
list_del_init(&res->mob_head);
- vmw_dmabuf_unreference(&res->backup);
+ vmw_bo_unreference(&res->backup);
}
if (new_backup) {
- res->backup = vmw_dmabuf_reference(new_backup);
+ res->backup = vmw_bo_reference(new_backup);
lockdep_assert_held(&new_backup->base.resv->lock.base);
list_add_tail(&res->mob_head, &new_backup->res_list);
} else {
@@ -959,6 +433,7 @@ void vmw_resource_unreserve(struct vmw_resource *res,
* for a resource and in that case, allocate
* one, reserve and validate it.
*
+ * @ticket: The ww aqcquire context to use, or NULL if trylocking.
* @res: The resource for which to allocate a backup buffer.
* @interruptible: Whether any sleeps during allocation should be
* performed while interruptible.
@@ -966,7 +441,8 @@ void vmw_resource_unreserve(struct vmw_resource *res,
* reserved and validated backup buffer.
*/
static int
-vmw_resource_check_buffer(struct vmw_resource *res,
+vmw_resource_check_buffer(struct ww_acquire_ctx *ticket,
+ struct vmw_resource *res,
bool interruptible,
struct ttm_validate_buffer *val_buf)
{
@@ -985,7 +461,7 @@ vmw_resource_check_buffer(struct vmw_resource *res,
val_buf->bo = ttm_bo_reference(&res->backup->base);
val_buf->shared = false;
list_add_tail(&val_buf->head, &val_list);
- ret = ttm_eu_reserve_buffers(NULL, &val_list, interruptible, NULL);
+ ret = ttm_eu_reserve_buffers(ticket, &val_list, interruptible, NULL);
if (unlikely(ret != 0))
goto out_no_reserve;
@@ -1003,11 +479,11 @@ vmw_resource_check_buffer(struct vmw_resource *res,
return 0;
out_no_validate:
- ttm_eu_backoff_reservation(NULL, &val_list);
+ ttm_eu_backoff_reservation(ticket, &val_list);
out_no_reserve:
ttm_bo_unref(&val_buf->bo);
if (backup_dirty)
- vmw_dmabuf_unreference(&res->backup);
+ vmw_bo_unreference(&res->backup);
return ret;
}
@@ -1050,10 +526,12 @@ int vmw_resource_reserve(struct vmw_resource *res, bool interruptible,
* vmw_resource_backoff_reservation - Unreserve and unreference a
* backup buffer
*.
+ * @ticket: The ww acquire ctx used for reservation.
* @val_buf: Backup buffer information.
*/
static void
-vmw_resource_backoff_reservation(struct ttm_validate_buffer *val_buf)
+vmw_resource_backoff_reservation(struct ww_acquire_ctx *ticket,
+ struct ttm_validate_buffer *val_buf)
{
struct list_head val_list;
@@ -1062,7 +540,7 @@ vmw_resource_backoff_reservation(struct ttm_validate_buffer *val_buf)
INIT_LIST_HEAD(&val_list);
list_add_tail(&val_buf->head, &val_list);
- ttm_eu_backoff_reservation(NULL, &val_list);
+ ttm_eu_backoff_reservation(ticket, &val_list);
ttm_bo_unref(&val_buf->bo);
}
@@ -1070,10 +548,12 @@ vmw_resource_backoff_reservation(struct ttm_validate_buffer *val_buf)
* vmw_resource_do_evict - Evict a resource, and transfer its data
* to a backup buffer.
*
+ * @ticket: The ww acquire ticket to use, or NULL if trylocking.
* @res: The resource to evict.
* @interruptible: Whether to wait interruptible.
*/
-static int vmw_resource_do_evict(struct vmw_resource *res, bool interruptible)
+static int vmw_resource_do_evict(struct ww_acquire_ctx *ticket,
+ struct vmw_resource *res, bool interruptible)
{
struct ttm_validate_buffer val_buf;
const struct vmw_res_func *func = res->func;
@@ -1083,7 +563,7 @@ static int vmw_resource_do_evict(struct vmw_resource *res, bool interruptible)
val_buf.bo = NULL;
val_buf.shared = false;
- ret = vmw_resource_check_buffer(res, interruptible, &val_buf);
+ ret = vmw_resource_check_buffer(ticket, res, interruptible, &val_buf);
if (unlikely(ret != 0))
return ret;
@@ -1098,7 +578,7 @@ static int vmw_resource_do_evict(struct vmw_resource *res, bool interruptible)
res->backup_dirty = true;
res->res_dirty = false;
out_no_unbind:
- vmw_resource_backoff_reservation(&val_buf);
+ vmw_resource_backoff_reservation(ticket, &val_buf);
return ret;
}
@@ -1152,7 +632,8 @@ int vmw_resource_validate(struct vmw_resource *res)
write_unlock(&dev_priv->resource_lock);
- ret = vmw_resource_do_evict(evict_res, true);
+ /* Trylock backup buffers with a NULL ticket. */
+ ret = vmw_resource_do_evict(NULL, evict_res, true);
if (unlikely(ret != 0)) {
write_lock(&dev_priv->resource_lock);
list_add_tail(&evict_res->lru_head, lru_list);
@@ -1171,7 +652,7 @@ int vmw_resource_validate(struct vmw_resource *res)
goto out_no_validate;
else if (!res->func->needs_backup && res->backup) {
list_del_init(&res->mob_head);
- vmw_dmabuf_unreference(&res->backup);
+ vmw_bo_unreference(&res->backup);
}
return 0;
@@ -1180,109 +661,39 @@ out_no_validate:
return ret;
}
-/**
- * vmw_fence_single_bo - Utility function to fence a single TTM buffer
- * object without unreserving it.
- *
- * @bo: Pointer to the struct ttm_buffer_object to fence.
- * @fence: Pointer to the fence. If NULL, this function will
- * insert a fence into the command stream..
- *
- * Contrary to the ttm_eu version of this function, it takes only
- * a single buffer object instead of a list, and it also doesn't
- * unreserve the buffer object, which needs to be done separately.
- */
-void vmw_fence_single_bo(struct ttm_buffer_object *bo,
- struct vmw_fence_obj *fence)
-{
- struct ttm_bo_device *bdev = bo->bdev;
-
- struct vmw_private *dev_priv =
- container_of(bdev, struct vmw_private, bdev);
-
- if (fence == NULL) {
- vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
- reservation_object_add_excl_fence(bo->resv, &fence->base);
- dma_fence_put(&fence->base);
- } else
- reservation_object_add_excl_fence(bo->resv, &fence->base);
-}
/**
- * vmw_resource_move_notify - TTM move_notify_callback
+ * vmw_resource_unbind_list
*
- * @bo: The TTM buffer object about to move.
- * @mem: The struct ttm_mem_reg indicating to what memory
- * region the move is taking place.
+ * @vbo: Pointer to the current backing MOB.
*
* Evicts the Guest Backed hardware resource if the backup
* buffer is being moved out of MOB memory.
- * Note that this function should not race with the resource
- * validation code as long as it accesses only members of struct
- * resource that remain static while bo::res is !NULL and
- * while we have @bo reserved. struct resource::backup is *not* a
- * static member. The resource validation code will take care
- * to set @bo::res to NULL, while having @bo reserved when the
- * buffer is no longer bound to the resource, so @bo:res can be
- * used to determine whether there is a need to unbind and whether
- * it is safe to unbind.
+ * Note that this function will not race with the resource
+ * validation code, since resource validation and eviction
+ * both require the backup buffer to be reserved.
*/
-void vmw_resource_move_notify(struct ttm_buffer_object *bo,
- struct ttm_mem_reg *mem)
+void vmw_resource_unbind_list(struct vmw_buffer_object *vbo)
{
- struct vmw_dma_buffer *dma_buf;
-
- if (mem == NULL)
- return;
-
- if (bo->destroy != vmw_dmabuf_bo_free &&
- bo->destroy != vmw_user_dmabuf_destroy)
- return;
-
- dma_buf = container_of(bo, struct vmw_dma_buffer, base);
-
- /*
- * Kill any cached kernel maps before move. An optimization could
- * be to do this iff source or destination memory type is VRAM.
- */
- vmw_dma_buffer_unmap(dma_buf);
- if (mem->mem_type != VMW_PL_MOB) {
- struct vmw_resource *res, *n;
- struct ttm_validate_buffer val_buf;
+ struct vmw_resource *res, *next;
+ struct ttm_validate_buffer val_buf = {
+ .bo = &vbo->base,
+ .shared = false
+ };
- val_buf.bo = bo;
- val_buf.shared = false;
+ lockdep_assert_held(&vbo->base.resv->lock.base);
+ list_for_each_entry_safe(res, next, &vbo->res_list, mob_head) {
+ if (!res->func->unbind)
+ continue;
- list_for_each_entry_safe(res, n, &dma_buf->res_list, mob_head) {
-
- if (unlikely(res->func->unbind == NULL))
- continue;
-
- (void) res->func->unbind(res, true, &val_buf);
- res->backup_dirty = true;
- res->res_dirty = false;
- list_del_init(&res->mob_head);
- }
-
- (void) ttm_bo_wait(bo, false, false);
+ (void) res->func->unbind(res, true, &val_buf);
+ res->backup_dirty = true;
+ res->res_dirty = false;
+ list_del_init(&res->mob_head);
}
-}
-
-
-/**
- * vmw_resource_swap_notify - swapout notify callback.
- *
- * @bo: The buffer object to be swapped out.
- */
-void vmw_resource_swap_notify(struct ttm_buffer_object *bo)
-{
- if (bo->destroy != vmw_dmabuf_bo_free &&
- bo->destroy != vmw_user_dmabuf_destroy)
- return;
- /* Kill any cached kernel maps before swapout */
- vmw_dma_buffer_unmap(vmw_dma_buffer(bo));
+ (void) ttm_bo_wait(&vbo->base, false, false);
}
@@ -1294,7 +705,7 @@ void vmw_resource_swap_notify(struct ttm_buffer_object *bo)
* Read back cached states from the device if they exist. This function
* assumings binding_mutex is held.
*/
-int vmw_query_readback_all(struct vmw_dma_buffer *dx_query_mob)
+int vmw_query_readback_all(struct vmw_buffer_object *dx_query_mob)
{
struct vmw_resource *dx_query_ctx;
struct vmw_private *dev_priv;
@@ -1344,7 +755,7 @@ int vmw_query_readback_all(struct vmw_dma_buffer *dx_query_mob)
void vmw_query_move_notify(struct ttm_buffer_object *bo,
struct ttm_mem_reg *mem)
{
- struct vmw_dma_buffer *dx_query_mob;
+ struct vmw_buffer_object *dx_query_mob;
struct ttm_bo_device *bdev = bo->bdev;
struct vmw_private *dev_priv;
@@ -1353,7 +764,7 @@ void vmw_query_move_notify(struct ttm_buffer_object *bo,
mutex_lock(&dev_priv->binding_mutex);
- dx_query_mob = container_of(bo, struct vmw_dma_buffer, base);
+ dx_query_mob = container_of(bo, struct vmw_buffer_object, base);
if (mem == NULL || !dx_query_mob || !dx_query_mob->dx_query_ctx) {
mutex_unlock(&dev_priv->binding_mutex);
return;
@@ -1368,7 +779,7 @@ void vmw_query_move_notify(struct ttm_buffer_object *bo,
/* Create a fence and attach the BO to it */
(void) vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
- vmw_fence_single_bo(bo, fence);
+ vmw_bo_fence_single(bo, fence);
if (fence != NULL)
vmw_fence_obj_unreference(&fence);
@@ -1405,6 +816,7 @@ static void vmw_resource_evict_type(struct vmw_private *dev_priv,
struct vmw_resource *evict_res;
unsigned err_count = 0;
int ret;
+ struct ww_acquire_ctx ticket;
do {
write_lock(&dev_priv->resource_lock);
@@ -1418,7 +830,8 @@ static void vmw_resource_evict_type(struct vmw_private *dev_priv,
list_del_init(&evict_res->lru_head);
write_unlock(&dev_priv->resource_lock);
- ret = vmw_resource_do_evict(evict_res, false);
+ /* Wait lock backup buffers with a ticket. */
+ ret = vmw_resource_do_evict(&ticket, evict_res, false);
if (unlikely(ret != 0)) {
write_lock(&dev_priv->resource_lock);
list_add_tail(&evict_res->lru_head, lru_list);
@@ -1481,7 +894,7 @@ int vmw_resource_pin(struct vmw_resource *res, bool interruptible)
goto out_no_reserve;
if (res->pin_count == 0) {
- struct vmw_dma_buffer *vbo = NULL;
+ struct vmw_buffer_object *vbo = NULL;
if (res->backup) {
vbo = res->backup;
@@ -1539,7 +952,7 @@ void vmw_resource_unpin(struct vmw_resource *res)
WARN_ON(res->pin_count == 0);
if (--res->pin_count == 0 && res->backup) {
- struct vmw_dma_buffer *vbo = res->backup;
+ struct vmw_buffer_object *vbo = res->backup;
(void) ttm_bo_reserve(&vbo->base, false, false, NULL);
vmw_bo_pin_reserved(vbo, false);