2009-12-09 17:19:58 -07:00
|
|
|
/**************************************************************************
|
|
|
|
*
|
2015-07-29 13:38:02 -06:00
|
|
|
* Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
|
2009-12-09 17:19:58 -07:00
|
|
|
* All Rights Reserved.
|
|
|
|
*
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
|
|
* copy of this software and associated documentation files (the
|
|
|
|
* "Software"), to deal in the Software without restriction, including
|
|
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
|
|
* distribute, sub license, and/or sell copies of the Software, and to
|
|
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
|
|
* the following conditions:
|
|
|
|
*
|
|
|
|
* The above copyright notice and this permission notice (including the
|
|
|
|
* next paragraph) shall be included in all copies or substantial portions
|
|
|
|
* of the Software.
|
|
|
|
*
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
|
|
|
|
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
|
|
|
|
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
|
|
|
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
|
|
|
|
* USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
*
|
|
|
|
**************************************************************************/
|
|
|
|
|
|
|
|
#include "vmwgfx_drv.h"
|
2012-10-02 11:01:07 -06:00
|
|
|
#include <drm/vmwgfx_drm.h>
|
|
|
|
#include <drm/ttm/ttm_object.h>
|
|
|
|
#include <drm/ttm/ttm_placement.h>
|
|
|
|
#include <drm/drmP.h>
|
2012-11-20 05:19:36 -07:00
|
|
|
#include "vmwgfx_resource_priv.h"
|
2015-08-10 11:39:35 -06:00
|
|
|
#include "vmwgfx_binding.h"
|
2009-12-09 17:19:58 -07:00
|
|
|
|
2013-11-12 01:09:54 -07:00
|
|
|
#define VMW_RES_EVICT_ERR_COUNT 10
|
|
|
|
|
2009-12-09 17:19:58 -07:00
|
|
|
struct vmw_user_dma_buffer {
|
2013-11-08 03:30:50 -07:00
|
|
|
struct ttm_prime_object prime;
|
2009-12-09 17:19:58 -07:00
|
|
|
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);
|
|
|
|
return res;
|
|
|
|
}
|
|
|
|
|
2014-02-05 00:13:56 -07:00
|
|
|
struct vmw_resource *
|
|
|
|
vmw_resource_reference_unless_doomed(struct vmw_resource *res)
|
|
|
|
{
|
|
|
|
return kref_get_unless_zero(&res->kref) ? res : NULL;
|
|
|
|
}
|
2011-10-04 12:13:33 -06:00
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_release_id - release a resource id to the id manager.
|
|
|
|
*
|
|
|
|
* @res: Pointer to the resource.
|
|
|
|
*
|
|
|
|
* Release the resource id to the resource id manager and set it to -1
|
|
|
|
*/
|
2012-11-20 05:19:36 -07:00
|
|
|
void vmw_resource_release_id(struct vmw_resource *res)
|
2011-10-04 12:13:33 -06:00
|
|
|
{
|
|
|
|
struct vmw_private *dev_priv = res->dev_priv;
|
2012-11-20 05:19:35 -07:00
|
|
|
struct idr *idr = &dev_priv->res_idr[res->func->res_type];
|
2011-10-04 12:13:33 -06:00
|
|
|
|
|
|
|
write_lock(&dev_priv->resource_lock);
|
|
|
|
if (res->id != -1)
|
2012-11-20 05:19:35 -07:00
|
|
|
idr_remove(idr, res->id);
|
2011-10-04 12:13:33 -06:00
|
|
|
res->id = -1;
|
|
|
|
write_unlock(&dev_priv->resource_lock);
|
|
|
|
}
|
|
|
|
|
2009-12-09 17:19:58 -07:00
|
|
|
static void vmw_resource_release(struct kref *kref)
|
|
|
|
{
|
|
|
|
struct vmw_resource *res =
|
|
|
|
container_of(kref, struct vmw_resource, kref);
|
|
|
|
struct vmw_private *dev_priv = res->dev_priv;
|
2012-11-20 05:19:35 -07:00
|
|
|
int id;
|
|
|
|
struct idr *idr = &dev_priv->res_idr[res->func->res_type];
|
2009-12-09 17:19:58 -07:00
|
|
|
|
2015-04-02 03:39:45 -06:00
|
|
|
write_lock(&dev_priv->resource_lock);
|
2011-10-04 12:13:33 -06:00
|
|
|
res->avail = false;
|
2012-11-20 05:19:35 -07:00
|
|
|
list_del_init(&res->lru_head);
|
2009-12-09 17:19:58 -07:00
|
|
|
write_unlock(&dev_priv->resource_lock);
|
2012-11-20 05:19:35 -07:00
|
|
|
if (res->backup) {
|
|
|
|
struct ttm_buffer_object *bo = &res->backup->base;
|
|
|
|
|
2016-04-06 03:12:03 -06:00
|
|
|
ttm_bo_reserve(bo, false, false, NULL);
|
2012-11-20 05:19:35 -07:00
|
|
|
if (!list_empty(&res->mob_head) &&
|
|
|
|
res->func->unbind != NULL) {
|
|
|
|
struct ttm_validate_buffer val_buf;
|
|
|
|
|
|
|
|
val_buf.bo = bo;
|
2014-09-04 12:01:52 -06:00
|
|
|
val_buf.shared = false;
|
2012-11-20 05:19:35 -07:00
|
|
|
res->func->unbind(res, false, &val_buf);
|
|
|
|
}
|
|
|
|
res->backup_dirty = false;
|
|
|
|
list_del_init(&res->mob_head);
|
|
|
|
ttm_bo_unreserve(bo);
|
|
|
|
vmw_dmabuf_unreference(&res->backup);
|
|
|
|
}
|
2009-12-09 17:19:58 -07:00
|
|
|
|
2014-02-05 00:13:56 -07:00
|
|
|
if (likely(res->hw_destroy != NULL)) {
|
|
|
|
mutex_lock(&dev_priv->binding_mutex);
|
2015-08-10 11:39:35 -06:00
|
|
|
vmw_binding_res_list_kill(&res->binding_head);
|
2014-02-05 00:13:56 -07:00
|
|
|
mutex_unlock(&dev_priv->binding_mutex);
|
2015-08-10 11:39:35 -06:00
|
|
|
res->hw_destroy(res);
|
2014-02-05 00:13:56 -07:00
|
|
|
}
|
2009-12-09 17:19:58 -07:00
|
|
|
|
2012-11-20 05:19:35 -07:00
|
|
|
id = res->id;
|
2009-12-09 17:19:58 -07:00
|
|
|
if (res->res_free != NULL)
|
|
|
|
res->res_free(res);
|
|
|
|
else
|
|
|
|
kfree(res);
|
|
|
|
|
|
|
|
write_lock(&dev_priv->resource_lock);
|
2011-10-04 12:13:33 -06:00
|
|
|
if (id != -1)
|
|
|
|
idr_remove(idr, id);
|
2015-04-02 03:39:45 -06:00
|
|
|
write_unlock(&dev_priv->resource_lock);
|
2009-12-09 17:19:58 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
void vmw_resource_unreference(struct vmw_resource **p_res)
|
|
|
|
{
|
|
|
|
struct vmw_resource *res = *p_res;
|
|
|
|
|
|
|
|
*p_res = NULL;
|
|
|
|
kref_put(&res->kref, vmw_resource_release);
|
|
|
|
}
|
|
|
|
|
2011-10-04 12:13:33 -06:00
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_alloc_id - release a resource id to the id manager.
|
|
|
|
*
|
|
|
|
* @res: Pointer to the resource.
|
|
|
|
*
|
|
|
|
* Allocate the lowest free resource from the resource manager, and set
|
|
|
|
* @res->id to that id. Returns 0 on success and -ENOMEM on failure.
|
|
|
|
*/
|
2012-11-20 05:19:36 -07:00
|
|
|
int vmw_resource_alloc_id(struct vmw_resource *res)
|
2011-10-04 12:13:33 -06:00
|
|
|
{
|
2012-11-20 05:19:35 -07:00
|
|
|
struct vmw_private *dev_priv = res->dev_priv;
|
2011-10-04 12:13:33 -06:00
|
|
|
int ret;
|
2012-11-20 05:19:35 -07:00
|
|
|
struct idr *idr = &dev_priv->res_idr[res->func->res_type];
|
2011-10-04 12:13:33 -06:00
|
|
|
|
|
|
|
BUG_ON(res->id != -1);
|
|
|
|
|
2013-02-27 18:04:14 -07:00
|
|
|
idr_preload(GFP_KERNEL);
|
|
|
|
write_lock(&dev_priv->resource_lock);
|
2011-10-04 12:13:33 -06:00
|
|
|
|
2013-02-27 18:04:14 -07:00
|
|
|
ret = idr_alloc(idr, res, 1, 0, GFP_NOWAIT);
|
|
|
|
if (ret >= 0)
|
|
|
|
res->id = ret;
|
2011-10-04 12:13:33 -06:00
|
|
|
|
2013-02-27 18:04:14 -07:00
|
|
|
write_unlock(&dev_priv->resource_lock);
|
|
|
|
idr_preload_end();
|
|
|
|
return ret < 0 ? ret : 0;
|
2011-10-04 12:13:33 -06:00
|
|
|
}
|
|
|
|
|
2012-11-20 05:19:35 -07:00
|
|
|
/**
|
|
|
|
* vmw_resource_init - initialize a struct vmw_resource
|
|
|
|
*
|
|
|
|
* @dev_priv: Pointer to a device private struct.
|
|
|
|
* @res: The struct vmw_resource to initialize.
|
|
|
|
* @obj_type: Resource object type.
|
|
|
|
* @delay_id: Boolean whether to defer device id allocation until
|
|
|
|
* the first validation.
|
|
|
|
* @res_free: Resource destructor.
|
|
|
|
* @func: Resource function table.
|
|
|
|
*/
|
2012-11-20 05:19:36 -07:00
|
|
|
int vmw_resource_init(struct vmw_private *dev_priv, struct vmw_resource *res,
|
|
|
|
bool delay_id,
|
|
|
|
void (*res_free) (struct vmw_resource *res),
|
|
|
|
const struct vmw_res_func *func)
|
2009-12-09 17:19:58 -07:00
|
|
|
{
|
|
|
|
kref_init(&res->kref);
|
|
|
|
res->hw_destroy = NULL;
|
|
|
|
res->res_free = res_free;
|
|
|
|
res->avail = false;
|
|
|
|
res->dev_priv = dev_priv;
|
2012-11-20 05:19:35 -07:00
|
|
|
res->func = func;
|
|
|
|
INIT_LIST_HEAD(&res->lru_head);
|
|
|
|
INIT_LIST_HEAD(&res->mob_head);
|
2013-10-08 03:32:36 -06:00
|
|
|
INIT_LIST_HEAD(&res->binding_head);
|
2011-10-04 12:13:33 -06:00
|
|
|
res->id = -1;
|
2012-11-20 05:19:35 -07:00
|
|
|
res->backup = NULL;
|
|
|
|
res->backup_offset = 0;
|
|
|
|
res->backup_dirty = false;
|
|
|
|
res->res_dirty = false;
|
2011-10-04 12:13:33 -06:00
|
|
|
if (delay_id)
|
|
|
|
return 0;
|
|
|
|
else
|
2012-11-20 05:19:35 -07:00
|
|
|
return vmw_resource_alloc_id(res);
|
2009-12-09 17:19:58 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_activate
|
|
|
|
*
|
|
|
|
* @res: Pointer to the newly created resource
|
|
|
|
* @hw_destroy: Destroy function. NULL if none.
|
|
|
|
*
|
|
|
|
* Activate a resource after the hardware has been made aware of it.
|
|
|
|
* Set tye destroy function to @destroy. Typically this frees the
|
|
|
|
* resource and destroys the hardware resources associated with it.
|
|
|
|
* Activate basically means that the function vmw_resource_lookup will
|
|
|
|
* find it.
|
|
|
|
*/
|
2012-11-20 05:19:36 -07:00
|
|
|
void vmw_resource_activate(struct vmw_resource *res,
|
|
|
|
void (*hw_destroy) (struct vmw_resource *))
|
2009-12-09 17:19:58 -07:00
|
|
|
{
|
|
|
|
struct vmw_private *dev_priv = res->dev_priv;
|
|
|
|
|
|
|
|
write_lock(&dev_priv->resource_lock);
|
|
|
|
res->avail = true;
|
|
|
|
res->hw_destroy = hw_destroy;
|
|
|
|
write_unlock(&dev_priv->resource_lock);
|
|
|
|
}
|
|
|
|
|
2012-11-20 05:19:35 -07:00
|
|
|
/**
|
|
|
|
* vmw_user_resource_lookup_handle - lookup a struct resource from a
|
|
|
|
* TTM user-space handle and perform basic type checks
|
|
|
|
*
|
|
|
|
* @dev_priv: Pointer to a device private struct
|
|
|
|
* @tfile: Pointer to a struct ttm_object_file identifying the caller
|
|
|
|
* @handle: The TTM user-space handle
|
|
|
|
* @converter: Pointer to an object describing the resource type
|
|
|
|
* @p_res: On successful return the location pointed to will contain
|
|
|
|
* a pointer to a refcounted struct vmw_resource.
|
|
|
|
*
|
|
|
|
* If the handle can't be found or is associated with an incorrect resource
|
|
|
|
* type, -EINVAL will be returned.
|
|
|
|
*/
|
|
|
|
int vmw_user_resource_lookup_handle(struct vmw_private *dev_priv,
|
|
|
|
struct ttm_object_file *tfile,
|
|
|
|
uint32_t handle,
|
|
|
|
const struct vmw_user_resource_conv
|
|
|
|
*converter,
|
|
|
|
struct vmw_resource **p_res)
|
2009-12-09 17:19:58 -07:00
|
|
|
{
|
2009-12-22 08:53:41 -07:00
|
|
|
struct ttm_base_object *base;
|
2012-11-20 05:19:35 -07:00
|
|
|
struct vmw_resource *res;
|
|
|
|
int ret = -EINVAL;
|
2009-12-09 17:19:58 -07:00
|
|
|
|
2009-12-22 08:53:41 -07:00
|
|
|
base = ttm_base_object_lookup(tfile, handle);
|
|
|
|
if (unlikely(base == NULL))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2013-11-08 03:12:51 -07:00
|
|
|
if (unlikely(ttm_base_object_type(base) != converter->object_type))
|
2012-11-20 05:19:35 -07:00
|
|
|
goto out_bad_resource;
|
2009-12-22 08:53:41 -07:00
|
|
|
|
2012-11-20 05:19:35 -07:00
|
|
|
res = converter->base_obj_to_res(base);
|
2009-12-22 08:53:41 -07:00
|
|
|
|
2012-11-20 05:19:35 -07:00
|
|
|
read_lock(&dev_priv->resource_lock);
|
|
|
|
if (!res->avail || res->res_free != converter->res_free) {
|
|
|
|
read_unlock(&dev_priv->resource_lock);
|
|
|
|
goto out_bad_resource;
|
|
|
|
}
|
2009-12-09 17:19:58 -07:00
|
|
|
|
2012-11-20 05:19:35 -07:00
|
|
|
kref_get(&res->kref);
|
|
|
|
read_unlock(&dev_priv->resource_lock);
|
|
|
|
|
|
|
|
*p_res = res;
|
|
|
|
ret = 0;
|
|
|
|
|
|
|
|
out_bad_resource:
|
2009-12-22 08:53:41 -07:00
|
|
|
ttm_base_object_unref(&base);
|
2012-11-20 05:19:35 -07:00
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Helper function that looks either a surface or dmabuf.
|
|
|
|
*
|
|
|
|
* The pointer this pointed at by out_surf and out_buf needs to be null.
|
|
|
|
*/
|
|
|
|
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_resource *res;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
BUG_ON(*out_surf || *out_buf);
|
|
|
|
|
|
|
|
ret = vmw_user_resource_lookup_handle(dev_priv, tfile, handle,
|
|
|
|
user_surface_converter,
|
|
|
|
&res);
|
|
|
|
if (!ret) {
|
|
|
|
*out_surf = vmw_res_to_srf(res);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
*out_surf = NULL;
|
2015-09-14 02:13:11 -06:00
|
|
|
ret = vmw_user_dmabuf_lookup(tfile, handle, out_buf, NULL);
|
2009-12-09 17:19:58 -07:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Buffer management.
|
|
|
|
*/
|
2013-11-28 02:46:56 -07:00
|
|
|
|
|
|
|
/**
|
|
|
|
* 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;
|
|
|
|
}
|
|
|
|
|
2010-01-13 14:28:39 -07:00
|
|
|
void vmw_dmabuf_bo_free(struct ttm_buffer_object *bo)
|
|
|
|
{
|
|
|
|
struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
|
|
|
|
|
2009-12-09 17:19:58 -07:00
|
|
|
kfree(vmw_bo);
|
|
|
|
}
|
|
|
|
|
2013-11-28 02:46:56 -07:00
|
|
|
static void vmw_user_dmabuf_destroy(struct ttm_buffer_object *bo)
|
|
|
|
{
|
|
|
|
struct vmw_user_dma_buffer *vmw_user_bo = vmw_user_dma_buffer(bo);
|
|
|
|
|
|
|
|
ttm_prime_object_kfree(vmw_user_bo, prime);
|
|
|
|
}
|
|
|
|
|
2009-12-09 17:19:58 -07:00
|
|
|
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;
|
2013-11-28 02:46:56 -07:00
|
|
|
bool user = (bo_free == &vmw_user_dmabuf_destroy);
|
2009-12-09 17:19:58 -07:00
|
|
|
|
2013-11-28 02:46:56 -07:00
|
|
|
BUG_ON(!bo_free && (!user && (bo_free != vmw_dmabuf_bo_free)));
|
2009-12-09 17:19:58 -07:00
|
|
|
|
2013-11-28 02:46:56 -07:00
|
|
|
acc_size = vmw_dmabuf_acc_size(dev_priv, size, user);
|
2009-12-09 17:19:58 -07:00
|
|
|
memset(vmw_bo, 0, sizeof(*vmw_bo));
|
|
|
|
|
2012-11-20 05:19:35 -07:00
|
|
|
INIT_LIST_HEAD(&vmw_bo->res_list);
|
2009-12-09 17:19:58 -07:00
|
|
|
|
|
|
|
ret = ttm_bo_init(bdev, &vmw_bo->base, size,
|
2014-02-28 05:33:21 -07:00
|
|
|
ttm_bo_type_device, placement,
|
2012-11-06 14:49:51 -07:00
|
|
|
0, interruptible,
|
2014-01-09 03:03:15 -07:00
|
|
|
NULL, acc_size, NULL, NULL, bo_free);
|
2009-12-09 17:19:58 -07:00
|
|
|
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;
|
|
|
|
|
2013-11-08 03:30:50 -07:00
|
|
|
vmw_user_bo = container_of(base, struct vmw_user_dma_buffer,
|
|
|
|
prime.base);
|
2009-12-09 17:19:58 -07:00
|
|
|
bo = &vmw_user_bo->dma.base;
|
|
|
|
ttm_bo_unref(&bo);
|
|
|
|
}
|
|
|
|
|
2012-11-21 04:32:19 -07:00
|
|
|
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();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-11-20 05:19:35 -07:00
|
|
|
/**
|
|
|
|
* 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,
|
2015-09-14 02:13:11 -06:00
|
|
|
struct vmw_dma_buffer **p_dma_buf,
|
|
|
|
struct ttm_base_object **p_base)
|
2012-11-20 05:19:35 -07:00
|
|
|
{
|
|
|
|
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 == NULL)) {
|
|
|
|
DRM_ERROR("Failed to allocate a buffer.\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = vmw_dmabuf_init(dev_priv, &user_bo->dma, size,
|
2012-11-21 03:19:53 -07:00
|
|
|
(dev_priv->has_mob) ?
|
2015-06-26 03:22:40 -06:00
|
|
|
&vmw_sys_placement :
|
2012-11-20 05:19:35 -07:00
|
|
|
&vmw_vram_sys_placement, true,
|
|
|
|
&vmw_user_dmabuf_destroy);
|
|
|
|
if (unlikely(ret != 0))
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
tmp = ttm_bo_reference(&user_bo->dma.base);
|
2013-11-08 03:30:50 -07:00
|
|
|
ret = ttm_prime_object_init(tfile,
|
|
|
|
size,
|
|
|
|
&user_bo->prime,
|
|
|
|
shareable,
|
|
|
|
ttm_buffer_type,
|
2012-11-21 04:32:19 -07:00
|
|
|
&vmw_user_dmabuf_release,
|
|
|
|
&vmw_user_dmabuf_ref_obj_release);
|
2012-11-20 05:19:35 -07:00
|
|
|
if (unlikely(ret != 0)) {
|
|
|
|
ttm_bo_unref(&tmp);
|
|
|
|
goto out_no_base_object;
|
|
|
|
}
|
|
|
|
|
|
|
|
*p_dma_buf = &user_bo->dma;
|
2015-09-14 02:13:11 -06:00
|
|
|
if (p_base) {
|
|
|
|
*p_base = &user_bo->prime.base;
|
|
|
|
kref_get(&(*p_base)->refcount);
|
|
|
|
}
|
2013-11-08 03:30:50 -07:00
|
|
|
*handle = user_bo->prime.base.hash.key;
|
2012-11-20 05:19:35 -07:00
|
|
|
|
|
|
|
out_no_base_object:
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2012-11-21 08:04:18 -07:00
|
|
|
/**
|
|
|
|
* 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);
|
2014-03-19 08:06:21 -06:00
|
|
|
|
|
|
|
/* 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;
|
2012-11-21 08:04:18 -07:00
|
|
|
}
|
|
|
|
|
2012-11-21 04:32:19 -07:00
|
|
|
/**
|
|
|
|
* 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) {
|
2014-01-21 05:07:31 -07:00
|
|
|
bool nonblock = !!(flags & drm_vmw_synccpu_dontblock);
|
2014-05-14 07:41:49 -06:00
|
|
|
long lret;
|
2012-11-21 04:32:19 -07:00
|
|
|
|
2016-08-29 01:08:28 -06:00
|
|
|
lret = reservation_object_wait_timeout_rcu(bo->resv, true, true,
|
|
|
|
nonblock ? 0 : MAX_SCHEDULE_TIMEOUT);
|
2014-05-14 07:41:49 -06:00
|
|
|
if (!lret)
|
|
|
|
return -EBUSY;
|
|
|
|
else if (lret < 0)
|
|
|
|
return lret;
|
|
|
|
return 0;
|
2012-11-21 04:32:19 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
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,
|
2017-03-27 03:21:25 -06:00
|
|
|
TTM_REF_SYNCCPU_WRITE, &existed, false);
|
2012-11-21 04:32:19 -07:00
|
|
|
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;
|
2015-09-14 02:13:11 -06:00
|
|
|
struct ttm_base_object *buffer_base;
|
2012-11-21 04:32:19 -07:00
|
|
|
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:
|
2015-09-14 02:13:11 -06:00
|
|
|
ret = vmw_user_dmabuf_lookup(tfile, arg->handle, &dma_buf,
|
|
|
|
&buffer_base);
|
2012-11-21 04:32:19 -07:00
|
|
|
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);
|
2015-09-14 02:13:11 -06:00
|
|
|
ttm_base_object_unref(&buffer_base);
|
2012-11-21 04:32:19 -07:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2009-12-09 17:19:58 -07:00
|
|
|
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;
|
2012-11-20 05:19:35 -07:00
|
|
|
struct vmw_dma_buffer *dma_buf;
|
|
|
|
uint32_t handle;
|
2009-12-09 17:19:58 -07:00
|
|
|
int ret;
|
|
|
|
|
2014-02-27 04:34:51 -07:00
|
|
|
ret = ttm_read_lock(&dev_priv->reservation_sem, true);
|
2012-11-20 05:19:35 -07:00
|
|
|
if (unlikely(ret != 0))
|
2009-12-09 17:19:58 -07:00
|
|
|
return ret;
|
|
|
|
|
2012-11-20 05:19:35 -07:00
|
|
|
ret = vmw_user_dmabuf_alloc(dev_priv, vmw_fpriv(file_priv)->tfile,
|
2015-09-14 02:13:11 -06:00
|
|
|
req->size, false, &handle, &dma_buf,
|
|
|
|
NULL);
|
2009-12-09 17:19:58 -07:00
|
|
|
if (unlikely(ret != 0))
|
2010-11-17 05:24:48 -07:00
|
|
|
goto out_no_dmabuf;
|
2009-12-09 17:19:58 -07:00
|
|
|
|
2012-11-20 05:19:35 -07:00
|
|
|
rep->handle = handle;
|
2013-07-24 13:08:53 -06:00
|
|
|
rep->map_handle = drm_vma_node_offset_addr(&dma_buf->base.vma_node);
|
2012-11-20 05:19:35 -07:00
|
|
|
rep->cur_gmr_id = handle;
|
|
|
|
rep->cur_gmr_offset = 0;
|
|
|
|
|
|
|
|
vmw_dmabuf_unreference(&dma_buf);
|
2009-12-09 17:19:58 -07:00
|
|
|
|
2010-11-17 05:24:48 -07:00
|
|
|
out_no_dmabuf:
|
2014-02-27 04:34:51 -07:00
|
|
|
ttm_read_unlock(&dev_priv->reservation_sem);
|
2009-12-09 17:19:58 -07:00
|
|
|
|
2010-11-17 05:24:48 -07:00
|
|
|
return ret;
|
2009-12-09 17:19:58 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
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,
|
2015-09-14 02:13:11 -06:00
|
|
|
uint32_t handle, struct vmw_dma_buffer **out,
|
|
|
|
struct ttm_base_object **p_base)
|
2009-12-09 17:19:58 -07:00
|
|
|
{
|
|
|
|
struct vmw_user_dma_buffer *vmw_user_bo;
|
|
|
|
struct ttm_base_object *base;
|
|
|
|
|
|
|
|
base = ttm_base_object_lookup(tfile, handle);
|
|
|
|
if (unlikely(base == NULL)) {
|
2017-02-28 05:55:54 -07:00
|
|
|
pr_err("Invalid buffer object handle 0x%08lx\n",
|
2009-12-09 17:19:58 -07:00
|
|
|
(unsigned long)handle);
|
|
|
|
return -ESRCH;
|
|
|
|
}
|
|
|
|
|
2013-11-08 03:30:50 -07:00
|
|
|
if (unlikely(ttm_base_object_type(base) != ttm_buffer_type)) {
|
2009-12-09 17:19:58 -07:00
|
|
|
ttm_base_object_unref(&base);
|
2017-02-28 05:55:54 -07:00
|
|
|
pr_err("Invalid buffer object handle 0x%08lx\n",
|
2009-12-09 17:19:58 -07:00
|
|
|
(unsigned long)handle);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2013-11-08 03:30:50 -07:00
|
|
|
vmw_user_bo = container_of(base, struct vmw_user_dma_buffer,
|
|
|
|
prime.base);
|
2009-12-09 17:19:58 -07:00
|
|
|
(void)ttm_bo_reference(&vmw_user_bo->dma.base);
|
2015-09-14 02:13:11 -06:00
|
|
|
if (p_base)
|
|
|
|
*p_base = base;
|
|
|
|
else
|
|
|
|
ttm_base_object_unref(&base);
|
2009-12-09 17:19:58 -07:00
|
|
|
*out = &vmw_user_bo->dma;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-11-20 05:19:35 -07:00
|
|
|
int vmw_user_dmabuf_reference(struct ttm_object_file *tfile,
|
2012-11-21 03:45:13 -07:00
|
|
|
struct vmw_dma_buffer *dma_buf,
|
|
|
|
uint32_t *handle)
|
2012-11-20 05:19:35 -07:00
|
|
|
{
|
|
|
|
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);
|
2012-11-21 03:45:13 -07:00
|
|
|
|
|
|
|
*handle = user_bo->prime.base.hash.key;
|
2013-11-08 03:30:50 -07:00
|
|
|
return ttm_ref_object_add(tfile, &user_bo->prime.base,
|
2017-03-27 03:21:25 -06:00
|
|
|
TTM_REF_USAGE, NULL, false);
|
2012-11-20 05:19:35 -07:00
|
|
|
}
|
|
|
|
|
2013-11-28 01:28:30 -07:00
|
|
|
/**
|
|
|
|
* 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.
|
|
|
|
*/
|
2012-08-27 19:53:54 -06:00
|
|
|
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);
|
2013-11-28 01:28:30 -07:00
|
|
|
struct vmw_dma_buffer *dma_buf;
|
2012-08-27 19:53:54 -06:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
args->pitch = args->width * ((args->bpp + 7) / 8);
|
|
|
|
args->size = args->pitch * args->height;
|
|
|
|
|
2014-02-27 04:34:51 -07:00
|
|
|
ret = ttm_read_lock(&dev_priv->reservation_sem, true);
|
2013-11-28 01:28:30 -07:00
|
|
|
if (unlikely(ret != 0))
|
2012-08-27 19:53:54 -06:00
|
|
|
return ret;
|
|
|
|
|
2013-11-28 01:28:30 -07:00
|
|
|
ret = vmw_user_dmabuf_alloc(dev_priv, vmw_fpriv(file_priv)->tfile,
|
|
|
|
args->size, false, &args->handle,
|
2015-09-14 02:13:11 -06:00
|
|
|
&dma_buf, NULL);
|
2012-08-27 19:53:54 -06:00
|
|
|
if (unlikely(ret != 0))
|
2013-11-28 01:28:30 -07:00
|
|
|
goto out_no_dmabuf;
|
2012-08-27 19:53:54 -06:00
|
|
|
|
2013-11-28 01:28:30 -07:00
|
|
|
vmw_dmabuf_unreference(&dma_buf);
|
2012-08-27 19:53:54 -06:00
|
|
|
out_no_dmabuf:
|
2014-02-27 04:34:51 -07:00
|
|
|
ttm_read_unlock(&dev_priv->reservation_sem);
|
2012-08-27 19:53:54 -06:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2013-11-28 01:28:30 -07:00
|
|
|
/**
|
|
|
|
* 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.
|
|
|
|
*/
|
2012-08-27 19:53:54 -06:00
|
|
|
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;
|
|
|
|
|
2015-09-14 02:13:11 -06:00
|
|
|
ret = vmw_user_dmabuf_lookup(tfile, handle, &out_buf, NULL);
|
2012-08-27 19:53:54 -06:00
|
|
|
if (ret != 0)
|
|
|
|
return -EINVAL;
|
|
|
|
|
2013-07-24 13:08:53 -06:00
|
|
|
*offset = drm_vma_node_offset_addr(&out_buf->base.vma_node);
|
2012-08-27 19:53:54 -06:00
|
|
|
vmw_dmabuf_unreference(&out_buf);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2013-11-28 01:28:30 -07:00
|
|
|
/**
|
|
|
|
* 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.
|
|
|
|
*/
|
2012-08-27 19:53:54 -06:00
|
|
|
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);
|
|
|
|
}
|
2012-11-20 05:19:35 -07:00
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_buf_alloc - Allocate a backup buffer for a resource.
|
|
|
|
*
|
|
|
|
* @res: The resource for which to allocate a backup buffer.
|
|
|
|
* @interruptible: Whether any sleeps during allocation should be
|
|
|
|
* performed while interruptible.
|
|
|
|
*/
|
|
|
|
static int vmw_resource_buf_alloc(struct vmw_resource *res,
|
|
|
|
bool interruptible)
|
|
|
|
{
|
|
|
|
unsigned long size =
|
|
|
|
(res->backup_size + PAGE_SIZE - 1) & PAGE_MASK;
|
|
|
|
struct vmw_dma_buffer *backup;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (likely(res->backup)) {
|
|
|
|
BUG_ON(res->backup->base.num_pages * PAGE_SIZE < size);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
backup = kzalloc(sizeof(*backup), GFP_KERNEL);
|
|
|
|
if (unlikely(backup == NULL))
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
ret = vmw_dmabuf_init(res->dev_priv, backup, res->backup_size,
|
|
|
|
res->func->backup_placement,
|
|
|
|
interruptible,
|
|
|
|
&vmw_dmabuf_bo_free);
|
|
|
|
if (unlikely(ret != 0))
|
|
|
|
goto out_no_dmabuf;
|
|
|
|
|
|
|
|
res->backup = backup;
|
|
|
|
|
|
|
|
out_no_dmabuf:
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_do_validate - Make a resource up-to-date and visible
|
|
|
|
* to the device.
|
|
|
|
*
|
|
|
|
* @res: The resource to make visible to the device.
|
|
|
|
* @val_buf: Information about a buffer possibly
|
|
|
|
* containing backup data if a bind operation is needed.
|
|
|
|
*
|
|
|
|
* On hardware resource shortage, this function returns -EBUSY and
|
|
|
|
* should be retried once resources have been freed up.
|
|
|
|
*/
|
|
|
|
static int vmw_resource_do_validate(struct vmw_resource *res,
|
|
|
|
struct ttm_validate_buffer *val_buf)
|
|
|
|
{
|
|
|
|
int ret = 0;
|
|
|
|
const struct vmw_res_func *func = res->func;
|
|
|
|
|
|
|
|
if (unlikely(res->id == -1)) {
|
|
|
|
ret = func->create(res);
|
|
|
|
if (unlikely(ret != 0))
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (func->bind &&
|
|
|
|
((func->needs_backup && list_empty(&res->mob_head) &&
|
|
|
|
val_buf->bo != NULL) ||
|
|
|
|
(!func->needs_backup && val_buf->bo != NULL))) {
|
|
|
|
ret = func->bind(res, val_buf);
|
|
|
|
if (unlikely(ret != 0))
|
|
|
|
goto out_bind_failed;
|
|
|
|
if (func->needs_backup)
|
|
|
|
list_add_tail(&res->mob_head, &res->backup->res_list);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Only do this on write operations, and move to
|
|
|
|
* vmw_resource_unreserve if it can be called after
|
|
|
|
* backup buffers have been unreserved. Otherwise
|
|
|
|
* sort out locking.
|
|
|
|
*/
|
|
|
|
res->res_dirty = true;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
out_bind_failed:
|
|
|
|
func->destroy(res);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_unreserve - Unreserve a resource previously reserved for
|
|
|
|
* command submission.
|
|
|
|
*
|
|
|
|
* @res: Pointer to the struct vmw_resource to unreserve.
|
2015-08-10 11:39:35 -06:00
|
|
|
* @switch_backup: Backup buffer has been switched.
|
2012-11-20 05:19:35 -07:00
|
|
|
* @new_backup: Pointer to new backup buffer if command submission
|
2015-08-10 11:39:35 -06:00
|
|
|
* switched. May be NULL.
|
|
|
|
* @new_backup_offset: New backup offset if @switch_backup is true.
|
2012-11-20 05:19:35 -07:00
|
|
|
*
|
|
|
|
* Currently unreserving a resource means putting it back on the device's
|
|
|
|
* resource lru list, so that it can be evicted if necessary.
|
|
|
|
*/
|
|
|
|
void vmw_resource_unreserve(struct vmw_resource *res,
|
2015-08-10 11:39:35 -06:00
|
|
|
bool switch_backup,
|
2012-11-20 05:19:35 -07:00
|
|
|
struct vmw_dma_buffer *new_backup,
|
|
|
|
unsigned long new_backup_offset)
|
|
|
|
{
|
|
|
|
struct vmw_private *dev_priv = res->dev_priv;
|
|
|
|
|
|
|
|
if (!list_empty(&res->lru_head))
|
|
|
|
return;
|
|
|
|
|
2015-08-10 11:39:35 -06:00
|
|
|
if (switch_backup && new_backup != res->backup) {
|
2012-11-20 05:19:35 -07:00
|
|
|
if (res->backup) {
|
2013-06-27 05:48:27 -06:00
|
|
|
lockdep_assert_held(&res->backup->base.resv->lock.base);
|
2012-11-20 05:19:35 -07:00
|
|
|
list_del_init(&res->mob_head);
|
|
|
|
vmw_dmabuf_unreference(&res->backup);
|
|
|
|
}
|
|
|
|
|
2015-08-10 11:39:35 -06:00
|
|
|
if (new_backup) {
|
|
|
|
res->backup = vmw_dmabuf_reference(new_backup);
|
|
|
|
lockdep_assert_held(&new_backup->base.resv->lock.base);
|
|
|
|
list_add_tail(&res->mob_head, &new_backup->res_list);
|
|
|
|
} else {
|
|
|
|
res->backup = NULL;
|
|
|
|
}
|
2012-11-20 05:19:35 -07:00
|
|
|
}
|
2015-08-10 11:39:35 -06:00
|
|
|
if (switch_backup)
|
2012-11-20 05:19:35 -07:00
|
|
|
res->backup_offset = new_backup_offset;
|
|
|
|
|
2015-03-03 00:26:06 -07:00
|
|
|
if (!res->func->may_evict || res->id == -1 || res->pin_count)
|
2012-11-20 05:19:35 -07:00
|
|
|
return;
|
|
|
|
|
|
|
|
write_lock(&dev_priv->resource_lock);
|
|
|
|
list_add_tail(&res->lru_head,
|
|
|
|
&res->dev_priv->res_lru[res->func->res_type]);
|
|
|
|
write_unlock(&dev_priv->resource_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_check_buffer - Check whether a backup buffer is needed
|
|
|
|
* for a resource and in that case, allocate
|
|
|
|
* one, reserve and validate it.
|
|
|
|
*
|
|
|
|
* @res: The resource for which to allocate a backup buffer.
|
|
|
|
* @interruptible: Whether any sleeps during allocation should be
|
|
|
|
* performed while interruptible.
|
|
|
|
* @val_buf: On successful return contains data about the
|
|
|
|
* reserved and validated backup buffer.
|
|
|
|
*/
|
2013-06-27 05:48:17 -06:00
|
|
|
static int
|
|
|
|
vmw_resource_check_buffer(struct vmw_resource *res,
|
|
|
|
bool interruptible,
|
|
|
|
struct ttm_validate_buffer *val_buf)
|
2012-11-20 05:19:35 -07:00
|
|
|
{
|
|
|
|
struct list_head val_list;
|
|
|
|
bool backup_dirty = false;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (unlikely(res->backup == NULL)) {
|
|
|
|
ret = vmw_resource_buf_alloc(res, interruptible);
|
|
|
|
if (unlikely(ret != 0))
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
INIT_LIST_HEAD(&val_list);
|
|
|
|
val_buf->bo = ttm_bo_reference(&res->backup->base);
|
2014-09-04 12:01:52 -06:00
|
|
|
val_buf->shared = false;
|
2012-11-20 05:19:35 -07:00
|
|
|
list_add_tail(&val_buf->head, &val_list);
|
2014-12-03 07:46:48 -07:00
|
|
|
ret = ttm_eu_reserve_buffers(NULL, &val_list, interruptible, NULL);
|
2012-11-20 05:19:35 -07:00
|
|
|
if (unlikely(ret != 0))
|
|
|
|
goto out_no_reserve;
|
|
|
|
|
|
|
|
if (res->func->needs_backup && list_empty(&res->mob_head))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
backup_dirty = res->backup_dirty;
|
|
|
|
ret = ttm_bo_validate(&res->backup->base,
|
|
|
|
res->func->backup_placement,
|
2012-11-28 04:25:44 -07:00
|
|
|
true, false);
|
2012-11-20 05:19:35 -07:00
|
|
|
|
|
|
|
if (unlikely(ret != 0))
|
|
|
|
goto out_no_validate;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
out_no_validate:
|
2013-11-15 01:06:47 -07:00
|
|
|
ttm_eu_backoff_reservation(NULL, &val_list);
|
2012-11-20 05:19:35 -07:00
|
|
|
out_no_reserve:
|
|
|
|
ttm_bo_unref(&val_buf->bo);
|
|
|
|
if (backup_dirty)
|
|
|
|
vmw_dmabuf_unreference(&res->backup);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_reserve - Reserve a resource for command submission
|
|
|
|
*
|
|
|
|
* @res: The resource to reserve.
|
|
|
|
*
|
|
|
|
* This function takes the resource off the LRU list and make sure
|
|
|
|
* a backup buffer is present for guest-backed resources. However,
|
|
|
|
* the buffer may not be bound to the resource at this point.
|
|
|
|
*
|
|
|
|
*/
|
2015-06-26 03:03:53 -06:00
|
|
|
int vmw_resource_reserve(struct vmw_resource *res, bool interruptible,
|
|
|
|
bool no_backup)
|
2012-11-20 05:19:35 -07:00
|
|
|
{
|
|
|
|
struct vmw_private *dev_priv = res->dev_priv;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
write_lock(&dev_priv->resource_lock);
|
|
|
|
list_del_init(&res->lru_head);
|
|
|
|
write_unlock(&dev_priv->resource_lock);
|
|
|
|
|
|
|
|
if (res->func->needs_backup && res->backup == NULL &&
|
|
|
|
!no_backup) {
|
2015-06-26 03:03:53 -06:00
|
|
|
ret = vmw_resource_buf_alloc(res, interruptible);
|
2015-08-10 11:39:35 -06:00
|
|
|
if (unlikely(ret != 0)) {
|
|
|
|
DRM_ERROR("Failed to allocate a backup buffer "
|
|
|
|
"of size %lu. bytes\n",
|
|
|
|
(unsigned long) res->backup_size);
|
2012-11-20 05:19:35 -07:00
|
|
|
return ret;
|
2015-08-10 11:39:35 -06:00
|
|
|
}
|
2012-11-20 05:19:35 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_backoff_reservation - Unreserve and unreference a
|
|
|
|
* backup buffer
|
|
|
|
*.
|
|
|
|
* @val_buf: Backup buffer information.
|
|
|
|
*/
|
2013-06-27 05:48:17 -06:00
|
|
|
static void
|
2013-11-15 01:06:47 -07:00
|
|
|
vmw_resource_backoff_reservation(struct ttm_validate_buffer *val_buf)
|
2012-11-20 05:19:35 -07:00
|
|
|
{
|
|
|
|
struct list_head val_list;
|
|
|
|
|
|
|
|
if (likely(val_buf->bo == NULL))
|
|
|
|
return;
|
|
|
|
|
|
|
|
INIT_LIST_HEAD(&val_list);
|
|
|
|
list_add_tail(&val_buf->head, &val_list);
|
2013-11-15 01:06:47 -07:00
|
|
|
ttm_eu_backoff_reservation(NULL, &val_list);
|
2012-11-20 05:19:35 -07:00
|
|
|
ttm_bo_unref(&val_buf->bo);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_do_evict - Evict a resource, and transfer its data
|
|
|
|
* to a backup buffer.
|
|
|
|
*
|
|
|
|
* @res: The resource to evict.
|
2013-11-12 01:09:54 -07:00
|
|
|
* @interruptible: Whether to wait interruptible.
|
2012-11-20 05:19:35 -07:00
|
|
|
*/
|
2015-04-02 03:39:45 -06:00
|
|
|
static int vmw_resource_do_evict(struct vmw_resource *res, bool interruptible)
|
2012-11-20 05:19:35 -07:00
|
|
|
{
|
|
|
|
struct ttm_validate_buffer val_buf;
|
|
|
|
const struct vmw_res_func *func = res->func;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
BUG_ON(!func->may_evict);
|
|
|
|
|
|
|
|
val_buf.bo = NULL;
|
2014-09-04 12:01:52 -06:00
|
|
|
val_buf.shared = false;
|
2013-11-15 01:06:47 -07:00
|
|
|
ret = vmw_resource_check_buffer(res, interruptible, &val_buf);
|
2012-11-20 05:19:35 -07:00
|
|
|
if (unlikely(ret != 0))
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
if (unlikely(func->unbind != NULL &&
|
|
|
|
(!func->needs_backup || !list_empty(&res->mob_head)))) {
|
|
|
|
ret = func->unbind(res, res->res_dirty, &val_buf);
|
|
|
|
if (unlikely(ret != 0))
|
|
|
|
goto out_no_unbind;
|
|
|
|
list_del_init(&res->mob_head);
|
|
|
|
}
|
|
|
|
ret = func->destroy(res);
|
|
|
|
res->backup_dirty = true;
|
|
|
|
res->res_dirty = false;
|
|
|
|
out_no_unbind:
|
2013-11-15 01:06:47 -07:00
|
|
|
vmw_resource_backoff_reservation(&val_buf);
|
2012-11-20 05:19:35 -07:00
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_validate - Make a resource up-to-date and visible
|
|
|
|
* to the device.
|
|
|
|
*
|
|
|
|
* @res: The resource to make visible to the device.
|
|
|
|
*
|
|
|
|
* On succesful return, any backup DMA buffer pointed to by @res->backup will
|
|
|
|
* be reserved and validated.
|
|
|
|
* On hardware resource shortage, this function will repeatedly evict
|
|
|
|
* resources of the same type until the validation succeeds.
|
|
|
|
*/
|
|
|
|
int vmw_resource_validate(struct vmw_resource *res)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
struct vmw_resource *evict_res;
|
|
|
|
struct vmw_private *dev_priv = res->dev_priv;
|
|
|
|
struct list_head *lru_list = &dev_priv->res_lru[res->func->res_type];
|
|
|
|
struct ttm_validate_buffer val_buf;
|
2013-11-12 01:09:54 -07:00
|
|
|
unsigned err_count = 0;
|
2012-11-20 05:19:35 -07:00
|
|
|
|
2015-08-10 11:39:35 -06:00
|
|
|
if (!res->func->create)
|
2012-11-20 05:19:35 -07:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
val_buf.bo = NULL;
|
2014-09-04 12:01:52 -06:00
|
|
|
val_buf.shared = false;
|
2012-11-20 05:19:35 -07:00
|
|
|
if (res->backup)
|
|
|
|
val_buf.bo = &res->backup->base;
|
|
|
|
do {
|
|
|
|
ret = vmw_resource_do_validate(res, &val_buf);
|
|
|
|
if (likely(ret != -EBUSY))
|
|
|
|
break;
|
|
|
|
|
|
|
|
write_lock(&dev_priv->resource_lock);
|
|
|
|
if (list_empty(lru_list) || !res->func->may_evict) {
|
2013-11-12 01:09:54 -07:00
|
|
|
DRM_ERROR("Out of device device resources "
|
2012-11-20 05:19:35 -07:00
|
|
|
"for %s.\n", res->func->type_name);
|
|
|
|
ret = -EBUSY;
|
|
|
|
write_unlock(&dev_priv->resource_lock);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
evict_res = vmw_resource_reference
|
|
|
|
(list_first_entry(lru_list, struct vmw_resource,
|
|
|
|
lru_head));
|
|
|
|
list_del_init(&evict_res->lru_head);
|
|
|
|
|
|
|
|
write_unlock(&dev_priv->resource_lock);
|
2013-11-12 01:09:54 -07:00
|
|
|
|
|
|
|
ret = vmw_resource_do_evict(evict_res, true);
|
|
|
|
if (unlikely(ret != 0)) {
|
|
|
|
write_lock(&dev_priv->resource_lock);
|
|
|
|
list_add_tail(&evict_res->lru_head, lru_list);
|
|
|
|
write_unlock(&dev_priv->resource_lock);
|
|
|
|
if (ret == -ERESTARTSYS ||
|
|
|
|
++err_count > VMW_RES_EVICT_ERR_COUNT) {
|
|
|
|
vmw_resource_unreference(&evict_res);
|
|
|
|
goto out_no_validate;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-11-20 05:19:35 -07:00
|
|
|
vmw_resource_unreference(&evict_res);
|
|
|
|
} while (1);
|
|
|
|
|
|
|
|
if (unlikely(ret != 0))
|
|
|
|
goto out_no_validate;
|
|
|
|
else if (!res->func->needs_backup && res->backup) {
|
|
|
|
list_del_init(&res->mob_head);
|
|
|
|
vmw_dmabuf_unreference(&res->backup);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
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;
|
2014-04-02 09:14:48 -06:00
|
|
|
|
2012-11-20 05:19:35 -07:00
|
|
|
struct vmw_private *dev_priv =
|
|
|
|
container_of(bdev, struct vmw_private, bdev);
|
|
|
|
|
2014-03-26 07:07:44 -06:00
|
|
|
if (fence == NULL) {
|
2012-11-20 05:19:35 -07:00
|
|
|
vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
|
2014-04-02 09:14:48 -06:00
|
|
|
reservation_object_add_excl_fence(bo->resv, &fence->base);
|
2016-10-25 06:00:45 -06:00
|
|
|
dma_fence_put(&fence->base);
|
2014-03-26 07:07:44 -06:00
|
|
|
} else
|
2014-04-02 09:14:48 -06:00
|
|
|
reservation_object_add_excl_fence(bo->resv, &fence->base);
|
2012-11-20 05:19:35 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_move_notify - TTM move_notify_callback
|
|
|
|
*
|
2015-08-10 11:56:15 -06:00
|
|
|
* @bo: The TTM buffer object about to move.
|
|
|
|
* @mem: The struct ttm_mem_reg indicating to what memory
|
|
|
|
* region the move is taking place.
|
2012-11-20 05:19:35 -07:00
|
|
|
*
|
2012-11-21 03:29:13 -07:00
|
|
|
* 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.
|
2012-11-20 05:19:35 -07:00
|
|
|
*/
|
|
|
|
void vmw_resource_move_notify(struct ttm_buffer_object *bo,
|
|
|
|
struct ttm_mem_reg *mem)
|
|
|
|
{
|
2012-11-21 03:29:13 -07:00
|
|
|
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);
|
|
|
|
|
|
|
|
if (mem->mem_type != VMW_PL_MOB) {
|
|
|
|
struct vmw_resource *res, *n;
|
|
|
|
struct ttm_validate_buffer val_buf;
|
|
|
|
|
|
|
|
val_buf.bo = bo;
|
2014-09-04 12:01:52 -06:00
|
|
|
val_buf.shared = false;
|
2012-11-21 03:29:13 -07:00
|
|
|
|
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
2016-04-06 03:12:04 -06:00
|
|
|
(void) ttm_bo_wait(bo, false, false);
|
2012-11-21 03:29:13 -07:00
|
|
|
}
|
2012-11-20 05:19:35 -07:00
|
|
|
}
|
|
|
|
|
2015-08-10 11:56:15 -06:00
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_query_readback_all - Read back cached query states
|
|
|
|
*
|
|
|
|
* @dx_query_mob: Buffer containing the DX query MOB
|
|
|
|
*
|
|
|
|
* 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)
|
|
|
|
{
|
|
|
|
struct vmw_resource *dx_query_ctx;
|
|
|
|
struct vmw_private *dev_priv;
|
|
|
|
struct {
|
|
|
|
SVGA3dCmdHeader header;
|
|
|
|
SVGA3dCmdDXReadbackAllQuery body;
|
|
|
|
} *cmd;
|
|
|
|
|
|
|
|
|
|
|
|
/* No query bound, so do nothing */
|
|
|
|
if (!dx_query_mob || !dx_query_mob->dx_query_ctx)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
dx_query_ctx = dx_query_mob->dx_query_ctx;
|
|
|
|
dev_priv = dx_query_ctx->dev_priv;
|
|
|
|
|
|
|
|
cmd = vmw_fifo_reserve_dx(dev_priv, sizeof(*cmd), dx_query_ctx->id);
|
|
|
|
if (unlikely(cmd == NULL)) {
|
|
|
|
DRM_ERROR("Failed reserving FIFO space for "
|
|
|
|
"query MOB read back.\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
cmd->header.id = SVGA_3D_CMD_DX_READBACK_ALL_QUERY;
|
|
|
|
cmd->header.size = sizeof(cmd->body);
|
|
|
|
cmd->body.cid = dx_query_ctx->id;
|
|
|
|
|
|
|
|
vmw_fifo_commit(dev_priv, sizeof(*cmd));
|
|
|
|
|
|
|
|
/* Triggers a rebind the next time affected context is bound */
|
|
|
|
dx_query_mob->dx_query_ctx = NULL;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_query_move_notify - Read back cached query states
|
|
|
|
*
|
|
|
|
* @bo: The TTM buffer object about to move.
|
|
|
|
* @mem: The memory region @bo is moving to.
|
|
|
|
*
|
|
|
|
* Called before the query MOB is swapped out to read back cached query
|
|
|
|
* states from the device.
|
|
|
|
*/
|
|
|
|
void vmw_query_move_notify(struct ttm_buffer_object *bo,
|
|
|
|
struct ttm_mem_reg *mem)
|
|
|
|
{
|
|
|
|
struct vmw_dma_buffer *dx_query_mob;
|
|
|
|
struct ttm_bo_device *bdev = bo->bdev;
|
|
|
|
struct vmw_private *dev_priv;
|
|
|
|
|
|
|
|
|
|
|
|
dev_priv = container_of(bdev, struct vmw_private, bdev);
|
|
|
|
|
|
|
|
mutex_lock(&dev_priv->binding_mutex);
|
|
|
|
|
|
|
|
dx_query_mob = container_of(bo, struct vmw_dma_buffer, base);
|
|
|
|
if (mem == NULL || !dx_query_mob || !dx_query_mob->dx_query_ctx) {
|
|
|
|
mutex_unlock(&dev_priv->binding_mutex);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If BO is being moved from MOB to system memory */
|
|
|
|
if (mem->mem_type == TTM_PL_SYSTEM && bo->mem.mem_type == VMW_PL_MOB) {
|
|
|
|
struct vmw_fence_obj *fence;
|
|
|
|
|
|
|
|
(void) vmw_query_readback_all(dx_query_mob);
|
|
|
|
mutex_unlock(&dev_priv->binding_mutex);
|
|
|
|
|
|
|
|
/* 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);
|
|
|
|
|
|
|
|
if (fence != NULL)
|
|
|
|
vmw_fence_obj_unreference(&fence);
|
|
|
|
|
2016-04-06 03:12:04 -06:00
|
|
|
(void) ttm_bo_wait(bo, false, false);
|
2015-08-10 11:56:15 -06:00
|
|
|
} else
|
|
|
|
mutex_unlock(&dev_priv->binding_mutex);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
2012-11-20 05:19:35 -07:00
|
|
|
/**
|
|
|
|
* vmw_resource_needs_backup - Return whether a resource needs a backup buffer.
|
|
|
|
*
|
|
|
|
* @res: The resource being queried.
|
|
|
|
*/
|
|
|
|
bool vmw_resource_needs_backup(const struct vmw_resource *res)
|
|
|
|
{
|
|
|
|
return res->func->needs_backup;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_evict_type - Evict all resources of a specific type
|
|
|
|
*
|
|
|
|
* @dev_priv: Pointer to a device private struct
|
|
|
|
* @type: The resource type to evict
|
|
|
|
*
|
|
|
|
* To avoid thrashing starvation or as part of the hibernation sequence,
|
2013-11-12 01:09:54 -07:00
|
|
|
* try to evict all evictable resources of a specific type.
|
2012-11-20 05:19:35 -07:00
|
|
|
*/
|
|
|
|
static void vmw_resource_evict_type(struct vmw_private *dev_priv,
|
|
|
|
enum vmw_res_type type)
|
|
|
|
{
|
|
|
|
struct list_head *lru_list = &dev_priv->res_lru[type];
|
|
|
|
struct vmw_resource *evict_res;
|
2013-11-12 01:09:54 -07:00
|
|
|
unsigned err_count = 0;
|
|
|
|
int ret;
|
2012-11-20 05:19:35 -07:00
|
|
|
|
|
|
|
do {
|
|
|
|
write_lock(&dev_priv->resource_lock);
|
|
|
|
|
|
|
|
if (list_empty(lru_list))
|
|
|
|
goto out_unlock;
|
|
|
|
|
|
|
|
evict_res = vmw_resource_reference(
|
|
|
|
list_first_entry(lru_list, struct vmw_resource,
|
|
|
|
lru_head));
|
|
|
|
list_del_init(&evict_res->lru_head);
|
|
|
|
write_unlock(&dev_priv->resource_lock);
|
2013-11-12 01:09:54 -07:00
|
|
|
|
|
|
|
ret = vmw_resource_do_evict(evict_res, false);
|
|
|
|
if (unlikely(ret != 0)) {
|
|
|
|
write_lock(&dev_priv->resource_lock);
|
|
|
|
list_add_tail(&evict_res->lru_head, lru_list);
|
|
|
|
write_unlock(&dev_priv->resource_lock);
|
|
|
|
if (++err_count > VMW_RES_EVICT_ERR_COUNT) {
|
|
|
|
vmw_resource_unreference(&evict_res);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-11-20 05:19:35 -07:00
|
|
|
vmw_resource_unreference(&evict_res);
|
|
|
|
} while (1);
|
|
|
|
|
|
|
|
out_unlock:
|
|
|
|
write_unlock(&dev_priv->resource_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_evict_all - Evict all evictable resources
|
|
|
|
*
|
|
|
|
* @dev_priv: Pointer to a device private struct
|
|
|
|
*
|
|
|
|
* To avoid thrashing starvation or as part of the hibernation sequence,
|
|
|
|
* evict all evictable resources. In particular this means that all
|
|
|
|
* guest-backed resources that are registered with the device are
|
|
|
|
* evicted and the OTable becomes clean.
|
|
|
|
*/
|
|
|
|
void vmw_resource_evict_all(struct vmw_private *dev_priv)
|
|
|
|
{
|
|
|
|
enum vmw_res_type type;
|
|
|
|
|
|
|
|
mutex_lock(&dev_priv->cmdbuf_mutex);
|
|
|
|
|
|
|
|
for (type = 0; type < vmw_res_max; ++type)
|
|
|
|
vmw_resource_evict_type(dev_priv, type);
|
|
|
|
|
|
|
|
mutex_unlock(&dev_priv->cmdbuf_mutex);
|
|
|
|
}
|
2015-03-03 00:26:06 -07:00
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_pin - Add a pin reference on a resource
|
|
|
|
*
|
|
|
|
* @res: The resource to add a pin reference on
|
|
|
|
*
|
|
|
|
* This function adds a pin reference, and if needed validates the resource.
|
|
|
|
* Having a pin reference means that the resource can never be evicted, and
|
|
|
|
* its id will never change as long as there is a pin reference.
|
|
|
|
* This function returns 0 on success and a negative error code on failure.
|
|
|
|
*/
|
2015-06-26 03:03:53 -06:00
|
|
|
int vmw_resource_pin(struct vmw_resource *res, bool interruptible)
|
2015-03-03 00:26:06 -07:00
|
|
|
{
|
|
|
|
struct vmw_private *dev_priv = res->dev_priv;
|
|
|
|
int ret;
|
|
|
|
|
2015-06-26 03:03:53 -06:00
|
|
|
ttm_write_lock(&dev_priv->reservation_sem, interruptible);
|
2015-03-03 00:26:06 -07:00
|
|
|
mutex_lock(&dev_priv->cmdbuf_mutex);
|
2015-06-26 03:03:53 -06:00
|
|
|
ret = vmw_resource_reserve(res, interruptible, false);
|
2015-03-03 00:26:06 -07:00
|
|
|
if (ret)
|
|
|
|
goto out_no_reserve;
|
|
|
|
|
|
|
|
if (res->pin_count == 0) {
|
2015-06-26 01:25:37 -06:00
|
|
|
struct vmw_dma_buffer *vbo = NULL;
|
2015-03-03 00:26:06 -07:00
|
|
|
|
|
|
|
if (res->backup) {
|
2015-06-26 01:25:37 -06:00
|
|
|
vbo = res->backup;
|
|
|
|
|
2016-04-06 03:12:03 -06:00
|
|
|
ttm_bo_reserve(&vbo->base, interruptible, false, NULL);
|
2015-06-26 01:25:37 -06:00
|
|
|
if (!vbo->pin_count) {
|
|
|
|
ret = ttm_bo_validate
|
|
|
|
(&vbo->base,
|
|
|
|
res->func->backup_placement,
|
2015-06-26 03:03:53 -06:00
|
|
|
interruptible, false);
|
2015-06-26 01:25:37 -06:00
|
|
|
if (ret) {
|
|
|
|
ttm_bo_unreserve(&vbo->base);
|
|
|
|
goto out_no_validate;
|
|
|
|
}
|
2015-03-03 00:26:06 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Do we really need to pin the MOB as well? */
|
2015-06-26 01:25:37 -06:00
|
|
|
vmw_bo_pin_reserved(vbo, true);
|
2015-03-03 00:26:06 -07:00
|
|
|
}
|
|
|
|
ret = vmw_resource_validate(res);
|
2015-06-26 01:25:37 -06:00
|
|
|
if (vbo)
|
|
|
|
ttm_bo_unreserve(&vbo->base);
|
2015-03-03 00:26:06 -07:00
|
|
|
if (ret)
|
|
|
|
goto out_no_validate;
|
|
|
|
}
|
|
|
|
res->pin_count++;
|
|
|
|
|
|
|
|
out_no_validate:
|
2015-08-10 11:39:35 -06:00
|
|
|
vmw_resource_unreserve(res, false, NULL, 0UL);
|
2015-03-03 00:26:06 -07:00
|
|
|
out_no_reserve:
|
|
|
|
mutex_unlock(&dev_priv->cmdbuf_mutex);
|
|
|
|
ttm_write_unlock(&dev_priv->reservation_sem);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_resource_unpin - Remove a pin reference from a resource
|
|
|
|
*
|
|
|
|
* @res: The resource to remove a pin reference from
|
|
|
|
*
|
|
|
|
* Having a pin reference means that the resource can never be evicted, and
|
|
|
|
* its id will never change as long as there is a pin reference.
|
|
|
|
*/
|
|
|
|
void vmw_resource_unpin(struct vmw_resource *res)
|
|
|
|
{
|
|
|
|
struct vmw_private *dev_priv = res->dev_priv;
|
|
|
|
int ret;
|
|
|
|
|
2017-01-19 11:57:00 -07:00
|
|
|
(void) ttm_read_lock(&dev_priv->reservation_sem, false);
|
2015-03-03 00:26:06 -07:00
|
|
|
mutex_lock(&dev_priv->cmdbuf_mutex);
|
|
|
|
|
2015-06-26 03:03:53 -06:00
|
|
|
ret = vmw_resource_reserve(res, false, true);
|
2015-03-03 00:26:06 -07:00
|
|
|
WARN_ON(ret);
|
|
|
|
|
|
|
|
WARN_ON(res->pin_count == 0);
|
|
|
|
if (--res->pin_count == 0 && res->backup) {
|
2015-06-26 01:25:37 -06:00
|
|
|
struct vmw_dma_buffer *vbo = res->backup;
|
2015-03-03 00:26:06 -07:00
|
|
|
|
2017-01-19 11:57:00 -07:00
|
|
|
(void) ttm_bo_reserve(&vbo->base, false, false, NULL);
|
2015-06-26 01:25:37 -06:00
|
|
|
vmw_bo_pin_reserved(vbo, false);
|
|
|
|
ttm_bo_unreserve(&vbo->base);
|
2015-03-03 00:26:06 -07:00
|
|
|
}
|
|
|
|
|
2015-08-10 11:39:35 -06:00
|
|
|
vmw_resource_unreserve(res, false, NULL, 0UL);
|
2015-03-03 00:26:06 -07:00
|
|
|
|
|
|
|
mutex_unlock(&dev_priv->cmdbuf_mutex);
|
|
|
|
ttm_read_unlock(&dev_priv->reservation_sem);
|
|
|
|
}
|
2015-08-10 11:39:35 -06:00
|
|
|
|
|
|
|
/**
|
|
|
|
* vmw_res_type - Return the resource type
|
|
|
|
*
|
|
|
|
* @res: Pointer to the resource
|
|
|
|
*/
|
|
|
|
enum vmw_res_type vmw_res_type(const struct vmw_resource *res)
|
|
|
|
{
|
|
|
|
return res->func->res_type;
|
|
|
|
}
|