mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-26 12:35:17 +07:00
ab9ccb96a6
Simplify the Nouveau prime implementation by using the default behavior provided by drm_gem_prime_import and drm_gem_prime_export. v2: Rename functions to nouveau_gem_prime_get_sg_table and nouveau_gem_prime_import_sg_table. Signed-off-by: Aaron Plattner <aplattner@nvidia.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: David Airlie <airlied@linux.ie> Signed-off-by: Dave Airlie <airlied@redhat.com>
96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
/*
|
|
* Copyright 2011 Red Hat Inc.
|
|
*
|
|
* 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, sublicense,
|
|
* 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
|
|
*
|
|
* Authors: Dave Airlie
|
|
*/
|
|
|
|
#include <drm/drmP.h>
|
|
|
|
#include "nouveau_drm.h"
|
|
#include "nouveau_gem.h"
|
|
|
|
struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *obj)
|
|
{
|
|
struct nouveau_bo *nvbo = nouveau_gem_object(obj);
|
|
int npages = nvbo->bo.num_pages;
|
|
|
|
return drm_prime_pages_to_sg(nvbo->bo.ttm->pages, npages);
|
|
}
|
|
|
|
void *nouveau_gem_prime_vmap(struct drm_gem_object *obj)
|
|
{
|
|
struct nouveau_bo *nvbo = nouveau_gem_object(obj);
|
|
int ret;
|
|
|
|
ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.num_pages,
|
|
&nvbo->dma_buf_vmap);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
return nvbo->dma_buf_vmap.virtual;
|
|
}
|
|
|
|
void nouveau_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
|
|
{
|
|
struct nouveau_bo *nvbo = nouveau_gem_object(obj);
|
|
|
|
ttm_bo_kunmap(&nvbo->dma_buf_vmap);
|
|
}
|
|
|
|
struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev,
|
|
size_t size,
|
|
struct sg_table *sg)
|
|
{
|
|
struct nouveau_bo *nvbo;
|
|
u32 flags = 0;
|
|
int ret;
|
|
|
|
flags = TTM_PL_FLAG_TT;
|
|
|
|
ret = nouveau_bo_new(dev, size, 0, flags, 0, 0,
|
|
sg, &nvbo);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_GART;
|
|
nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
|
|
if (!nvbo->gem) {
|
|
nouveau_bo_ref(NULL, &nvbo);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
nvbo->gem->driver_private = nvbo;
|
|
return nvbo->gem;
|
|
}
|
|
|
|
int nouveau_gem_prime_pin(struct drm_gem_object *obj)
|
|
{
|
|
struct nouveau_bo *nvbo = nouveau_gem_object(obj);
|
|
int ret = 0;
|
|
|
|
/* pin buffer into GTT */
|
|
ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_TT);
|
|
if (ret)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|