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drm/rockchip: add dmabuf sync partial to dma_buf_ops

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Change-Id: I6ba192c11a0ff9eeafa4f4f0260addb1e56c4afc
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
This commit is contained in:
Jianqun Xu
2021-04-30 10:46:43 +08:00
committed by Tao Huang
parent 8d73d218b3
commit e68e6d1a35
3 changed files with 125 additions and 0 deletions
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22
drivers/gpu/drm/rockchip/rockchip_drm_drv.c
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@@ -1820,6 +1820,26 @@ static int rockchip_drm_gem_dmabuf_end_cpu_access(struct dma_buf *dma_buf,
return rockchip_gem_prime_end_cpu_access(obj, dir);
}
static int rockchip_drm_gem_begin_cpu_access_partial(
struct dma_buf *dma_buf,
enum dma_data_direction dir,
unsigned int offset, unsigned int len)
{
struct drm_gem_object *obj = dma_buf->priv;
return rockchip_gem_prime_begin_cpu_access_partial(obj, dir, offset, len);
}
static int rockchip_drm_gem_end_cpu_access_partial(
struct dma_buf *dma_buf,
enum dma_data_direction dir,
unsigned int offset, unsigned int len)
{
struct drm_gem_object *obj = dma_buf->priv;
return rockchip_gem_prime_end_cpu_access_partial(obj, dir, offset, len);
}
static const struct dma_buf_ops rockchip_drm_gem_prime_dmabuf_ops = {
.attach = drm_gem_map_attach,
.detach = drm_gem_map_detach,
@@ -1833,6 +1853,8 @@ static const struct dma_buf_ops rockchip_drm_gem_prime_dmabuf_ops = {
.vunmap = drm_gem_dmabuf_vunmap,
.begin_cpu_access = rockchip_drm_gem_dmabuf_begin_cpu_access,
.end_cpu_access = rockchip_drm_gem_dmabuf_end_cpu_access,
.begin_cpu_access_partial = rockchip_drm_gem_begin_cpu_access_partial,
.end_cpu_access_partial = rockchip_drm_gem_end_cpu_access_partial,
};
#ifdef CONFIG_ARCH_ROCKCHIP

92
drivers/gpu/drm/rockchip/rockchip_drm_gem.c
View File

@@ -1027,3 +1027,95 @@ int rockchip_gem_prime_end_cpu_access(struct drm_gem_object *obj,
rk_obj->sgt->nents, dir);
return 0;
}
static int rockchip_gem_prime_sgl_sync_range(struct device *dev,
struct scatterlist *sgl, unsigned int nents,
unsigned int offset, unsigned int length,
enum dma_data_direction dir, bool for_cpu)
{
int i;
struct scatterlist *sg;
unsigned int len = 0;
dma_addr_t sg_dma_addr;
for_each_sg(sgl, sg, nents, i) {
if (sg_dma_len(sg) == 0)
break;
if (i > 0) {
pr_warn_ratelimited("Partial cmo only supported with 1 segment\n"
"is dma_set_max_seg_size being set on dev:%s\n",
dev_name(dev));
return -EINVAL;
}
}
for_each_sg(sgl, sg, nents, i) {
unsigned int sg_offset, sg_left, size = 0;
if (i == 0)
sg_dma_addr = sg_dma_address(sg);
len += sg->length;
if (len <= offset) {
sg_dma_addr += sg->length;
continue;
}
sg_left = len - offset;
sg_offset = sg->length - sg_left;
size = (length < sg_left) ? length : sg_left;
if (for_cpu)
dma_sync_single_range_for_cpu(dev, sg_dma_addr,
sg_offset, size, dir);
else
dma_sync_single_range_for_device(dev, sg_dma_addr,
sg_offset, size, dir);
offset += size;
length -= size;
sg_dma_addr += sg->length;
if (length == 0)
break;
}
return 0;
}
int rockchip_gem_prime_begin_cpu_access_partial(struct drm_gem_object *obj,
enum dma_data_direction dir,
unsigned int offset,
unsigned int len)
{
struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
struct drm_device *drm = obj->dev;
if (!rk_obj->sgt)
return 0;
rockchip_gem_prime_sgl_sync_range(drm->dev, rk_obj->sgt->sgl,
rk_obj->sgt->nents,
offset, len, dir, true);
return 0;
}
int rockchip_gem_prime_end_cpu_access_partial(struct drm_gem_object *obj,
enum dma_data_direction dir,
unsigned int offset,
unsigned int len)
{
struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
struct drm_device *drm = obj->dev;
if (!rk_obj->sgt)
return 0;
rockchip_gem_prime_sgl_sync_range(drm->dev, rk_obj->sgt->sgl,
rk_obj->sgt->nents,
offset, len, dir, false);
return 0;
}

11
drivers/gpu/drm/rockchip/rockchip_drm_gem.h
View File

@@ -91,4 +91,15 @@ int rockchip_gem_prime_begin_cpu_access(struct drm_gem_object *obj,
int rockchip_gem_prime_end_cpu_access(struct drm_gem_object *obj,
enum dma_data_direction dir);
int rockchip_gem_prime_begin_cpu_access_partial(struct drm_gem_object *obj,
enum dma_data_direction dir,
unsigned int offset,
unsigned int len);
int rockchip_gem_prime_end_cpu_access_partial(struct drm_gem_object *obj,
enum dma_data_direction dir,
unsigned int offset,
unsigned int len);
#endif /* _ROCKCHIP_DRM_GEM_H */