Commit 1e6d17a5 authored by Aaron Plattner's avatar Aaron Plattner Committed by Dave Airlie

drm/radeon: use prime helpers

Simplify the Radeon prime implementation by using the default behavior provided
by drm_gem_prime_import and drm_gem_prime_export.

v2:
- Rename functions to radeon_gem_prime_get_sg_table and
  radeon_gem_prime_import_sg_table.
- Delete the now-unused vmapping_count variable.
Signed-off-by: default avatarAaron Plattner <aplattner@nvidia.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent ab9ccb96
...@@ -350,7 +350,6 @@ struct radeon_bo { ...@@ -350,7 +350,6 @@ struct radeon_bo {
struct drm_gem_object gem_base; struct drm_gem_object gem_base;
struct ttm_bo_kmap_obj dma_buf_vmap; struct ttm_bo_kmap_obj dma_buf_vmap;
int vmapping_count;
}; };
#define gem_to_radeon_bo(gobj) container_of((gobj), struct radeon_bo, gem_base) #define gem_to_radeon_bo(gobj) container_of((gobj), struct radeon_bo, gem_base)
......
...@@ -118,11 +118,13 @@ int radeon_mode_dumb_create(struct drm_file *file_priv, ...@@ -118,11 +118,13 @@ int radeon_mode_dumb_create(struct drm_file *file_priv,
int radeon_mode_dumb_destroy(struct drm_file *file_priv, int radeon_mode_dumb_destroy(struct drm_file *file_priv,
struct drm_device *dev, struct drm_device *dev,
uint32_t handle); uint32_t handle);
struct dma_buf *radeon_gem_prime_export(struct drm_device *dev, struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj);
struct drm_gem_object *obj, struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev,
int flags); size_t size,
struct drm_gem_object *radeon_gem_prime_import(struct drm_device *dev, struct sg_table *sg);
struct dma_buf *dma_buf); int radeon_gem_prime_pin(struct drm_gem_object *obj);
void *radeon_gem_prime_vmap(struct drm_gem_object *obj);
void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
extern long radeon_kms_compat_ioctl(struct file *filp, unsigned int cmd, extern long radeon_kms_compat_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg); unsigned long arg);
...@@ -409,8 +411,13 @@ static struct drm_driver kms_driver = { ...@@ -409,8 +411,13 @@ static struct drm_driver kms_driver = {
.prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle, .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_export = radeon_gem_prime_export, .gem_prime_export = drm_gem_prime_export,
.gem_prime_import = radeon_gem_prime_import, .gem_prime_import = drm_gem_prime_import,
.gem_prime_pin = radeon_gem_prime_pin,
.gem_prime_get_sg_table = radeon_gem_prime_get_sg_table,
.gem_prime_import_sg_table = radeon_gem_prime_import_sg_table,
.gem_prime_vmap = radeon_gem_prime_vmap,
.gem_prime_vunmap = radeon_gem_prime_vunmap,
.name = DRIVER_NAME, .name = DRIVER_NAME,
.desc = DRIVER_DESC, .desc = DRIVER_DESC,
......
...@@ -28,199 +28,71 @@ ...@@ -28,199 +28,71 @@
#include "radeon.h" #include "radeon.h"
#include <drm/radeon_drm.h> #include <drm/radeon_drm.h>
#include <linux/dma-buf.h> struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj)
static struct sg_table *radeon_gem_map_dma_buf(struct dma_buf_attachment *attachment,
enum dma_data_direction dir)
{ {
struct radeon_bo *bo = attachment->dmabuf->priv; struct radeon_bo *bo = gem_to_radeon_bo(obj);
struct drm_device *dev = bo->rdev->ddev;
int npages = bo->tbo.num_pages; int npages = bo->tbo.num_pages;
struct sg_table *sg;
int nents;
mutex_lock(&dev->struct_mutex);
sg = drm_prime_pages_to_sg(bo->tbo.ttm->pages, npages);
nents = dma_map_sg(attachment->dev, sg->sgl, sg->nents, dir);
mutex_unlock(&dev->struct_mutex);
return sg;
}
static void radeon_gem_unmap_dma_buf(struct dma_buf_attachment *attachment,
struct sg_table *sg, enum dma_data_direction dir)
{
dma_unmap_sg(attachment->dev, sg->sgl, sg->nents, dir);
sg_free_table(sg);
kfree(sg);
}
static void radeon_gem_dmabuf_release(struct dma_buf *dma_buf)
{
struct radeon_bo *bo = dma_buf->priv;
if (bo->gem_base.export_dma_buf == dma_buf) { return drm_prime_pages_to_sg(bo->tbo.ttm->pages, npages);
DRM_ERROR("unreference dmabuf %p\n", &bo->gem_base);
bo->gem_base.export_dma_buf = NULL;
drm_gem_object_unreference_unlocked(&bo->gem_base);
}
}
static void *radeon_gem_kmap_atomic(struct dma_buf *dma_buf, unsigned long page_num)
{
return NULL;
} }
static void radeon_gem_kunmap_atomic(struct dma_buf *dma_buf, unsigned long page_num, void *addr) void *radeon_gem_prime_vmap(struct drm_gem_object *obj)
{ {
struct radeon_bo *bo = gem_to_radeon_bo(obj);
}
static void *radeon_gem_kmap(struct dma_buf *dma_buf, unsigned long page_num)
{
return NULL;
}
static void radeon_gem_kunmap(struct dma_buf *dma_buf, unsigned long page_num, void *addr)
{
}
static int radeon_gem_prime_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma)
{
return -EINVAL;
}
static void *radeon_gem_prime_vmap(struct dma_buf *dma_buf)
{
struct radeon_bo *bo = dma_buf->priv;
struct drm_device *dev = bo->rdev->ddev;
int ret; int ret;
mutex_lock(&dev->struct_mutex);
if (bo->vmapping_count) {
bo->vmapping_count++;
goto out_unlock;
}
ret = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, ret = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages,
&bo->dma_buf_vmap); &bo->dma_buf_vmap);
if (ret) { if (ret)
mutex_unlock(&dev->struct_mutex);
return ERR_PTR(ret); return ERR_PTR(ret);
}
bo->vmapping_count = 1;
out_unlock:
mutex_unlock(&dev->struct_mutex);
return bo->dma_buf_vmap.virtual; return bo->dma_buf_vmap.virtual;
} }
static void radeon_gem_prime_vunmap(struct dma_buf *dma_buf, void *vaddr) void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
{ {
struct radeon_bo *bo = dma_buf->priv; struct radeon_bo *bo = gem_to_radeon_bo(obj);
struct drm_device *dev = bo->rdev->ddev;
mutex_lock(&dev->struct_mutex);
bo->vmapping_count--;
if (bo->vmapping_count == 0) {
ttm_bo_kunmap(&bo->dma_buf_vmap); ttm_bo_kunmap(&bo->dma_buf_vmap);
}
mutex_unlock(&dev->struct_mutex);
} }
const static struct dma_buf_ops radeon_dmabuf_ops = {
.map_dma_buf = radeon_gem_map_dma_buf, struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev,
.unmap_dma_buf = radeon_gem_unmap_dma_buf,
.release = radeon_gem_dmabuf_release,
.kmap = radeon_gem_kmap,
.kmap_atomic = radeon_gem_kmap_atomic,
.kunmap = radeon_gem_kunmap,
.kunmap_atomic = radeon_gem_kunmap_atomic,
.mmap = radeon_gem_prime_mmap,
.vmap = radeon_gem_prime_vmap,
.vunmap = radeon_gem_prime_vunmap,
};
static int radeon_prime_create(struct drm_device *dev,
size_t size, size_t size,
struct sg_table *sg, struct sg_table *sg)
struct radeon_bo **pbo)
{ {
struct radeon_device *rdev = dev->dev_private; struct radeon_device *rdev = dev->dev_private;
struct radeon_bo *bo; struct radeon_bo *bo;
int ret; int ret;
ret = radeon_bo_create(rdev, size, PAGE_SIZE, false, ret = radeon_bo_create(rdev, size, PAGE_SIZE, false,
RADEON_GEM_DOMAIN_GTT, sg, pbo); RADEON_GEM_DOMAIN_GTT, sg, &bo);
if (ret) if (ret)
return ret; return ERR_PTR(ret);
bo = *pbo;
bo->gem_base.driver_private = bo; bo->gem_base.driver_private = bo;
mutex_lock(&rdev->gem.mutex); mutex_lock(&rdev->gem.mutex);
list_add_tail(&bo->list, &rdev->gem.objects); list_add_tail(&bo->list, &rdev->gem.objects);
mutex_unlock(&rdev->gem.mutex); mutex_unlock(&rdev->gem.mutex);
return 0; return &bo->gem_base;
} }
struct dma_buf *radeon_gem_prime_export(struct drm_device *dev, int radeon_gem_prime_pin(struct drm_gem_object *obj)
struct drm_gem_object *obj,
int flags)
{ {
struct radeon_bo *bo = gem_to_radeon_bo(obj); struct radeon_bo *bo = gem_to_radeon_bo(obj);
int ret = 0; int ret = 0;
ret = radeon_bo_reserve(bo, false); ret = radeon_bo_reserve(bo, false);
if (unlikely(ret != 0)) if (unlikely(ret != 0))
return ERR_PTR(ret); return ret;
/* pin buffer into GTT */ /* pin buffer into GTT */
ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL); ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL);
if (ret) { if (ret) {
radeon_bo_unreserve(bo); radeon_bo_unreserve(bo);
return ERR_PTR(ret); return ret;
} }
radeon_bo_unreserve(bo); radeon_bo_unreserve(bo);
return dma_buf_export(bo, &radeon_dmabuf_ops, obj->size, flags);
}
struct drm_gem_object *radeon_gem_prime_import(struct drm_device *dev, return 0;
struct dma_buf *dma_buf)
{
struct dma_buf_attachment *attach;
struct sg_table *sg;
struct radeon_bo *bo;
int ret;
if (dma_buf->ops == &radeon_dmabuf_ops) {
bo = dma_buf->priv;
if (bo->gem_base.dev == dev) {
drm_gem_object_reference(&bo->gem_base);
dma_buf_put(dma_buf);
return &bo->gem_base;
}
}
/* need to attach */
attach = dma_buf_attach(dma_buf, dev->dev);
if (IS_ERR(attach))
return ERR_CAST(attach);
sg = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL);
if (IS_ERR(sg)) {
ret = PTR_ERR(sg);
goto fail_detach;
}
ret = radeon_prime_create(dev, dma_buf->size, sg, &bo);
if (ret)
goto fail_unmap;
bo->gem_base.import_attach = attach;
return &bo->gem_base;
fail_unmap:
dma_buf_unmap_attachment(attach, sg, DMA_BIDIRECTIONAL);
fail_detach:
dma_buf_detach(dma_buf, attach);
return ERR_PTR(ret);
} }
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