aboutsummaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-31 18:01:18 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-31 18:01:18 -0700
commit9fdadb2cbaf4b482dfd6086e8bd3d2db071a1702 (patch)
tree4a6e11e3379ee93c1992cfd595872dded1fd2fac /drivers
parent76f901eb4659779ecacd0e4eba49f55442daef53 (diff)
parent63bc620b45af8c743ac291c8725933278c712692 (diff)
downloadlinux-9fdadb2cbaf4b482dfd6086e8bd3d2db071a1702.tar.gz
Merge branch 'drm-prime-vmap' of git://people.freedesktop.org/~airlied/linux
Pull drm prime mmap/vmap code from Dave Airlie: "As mentioned previously these are the extra bits of drm that relied on the dma-buf pull to work, the first three just stub out the mmap interface, and the next set provide vmap export to i915/radeon/nouveau and vmap import to udl." * 'drm-prime-vmap' of git://people.freedesktop.org/~airlied/linux: radeon: add radeon prime vmap support. nouveau: add vmap support to nouveau prime support udl: support vmapping imported dma-bufs i915: add dma-buf vmap support for exporting vmapped buffer radeon: add stub dma-buf mmap functionality nouveau: add stub dma-buf mmap functionality. i915: add stub dma-buf mmap callback.
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/i915/i915_drv.h3
-rw-r--r--drivers/gpu/drm/i915/i915_gem_dmabuf.c61
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_drv.h3
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_prime.c45
-rw-r--r--drivers/gpu/drm/radeon/radeon.h3
-rw-r--r--drivers/gpu/drm/radeon/radeon_prime.c44
-rw-r--r--drivers/gpu/drm/udl/udl_fb.c13
-rw-r--r--drivers/gpu/drm/udl/udl_gem.c25
8 files changed, 192 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 377c21f531e..c9cfc67c2cf 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -942,6 +942,9 @@ struct drm_i915_gem_object {
/* prime dma-buf support */
struct sg_table *sg_table;
+ void *dma_buf_vmapping;
+ int vmapping_count;
+
/**
* Used for performing relocations during execbuffer insertion.
*/
diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
index 8e269178d6a..aa308e1337d 100644
--- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
@@ -74,6 +74,59 @@ static void i915_gem_dmabuf_release(struct dma_buf *dma_buf)
}
}
+static void *i915_gem_dmabuf_vmap(struct dma_buf *dma_buf)
+{
+ struct drm_i915_gem_object *obj = dma_buf->priv;
+ struct drm_device *dev = obj->base.dev;
+ int ret;
+
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret)
+ return ERR_PTR(ret);
+
+ if (obj->dma_buf_vmapping) {
+ obj->vmapping_count++;
+ goto out_unlock;
+ }
+
+ if (!obj->pages) {
+ ret = i915_gem_object_get_pages_gtt(obj, __GFP_NORETRY | __GFP_NOWARN);
+ if (ret) {
+ mutex_unlock(&dev->struct_mutex);
+ return ERR_PTR(ret);
+ }
+ }
+
+ obj->dma_buf_vmapping = vmap(obj->pages, obj->base.size / PAGE_SIZE, 0, PAGE_KERNEL);
+ if (!obj->dma_buf_vmapping) {
+ DRM_ERROR("failed to vmap object\n");
+ goto out_unlock;
+ }
+
+ obj->vmapping_count = 1;
+out_unlock:
+ mutex_unlock(&dev->struct_mutex);
+ return obj->dma_buf_vmapping;
+}
+
+static void i915_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
+{
+ struct drm_i915_gem_object *obj = dma_buf->priv;
+ struct drm_device *dev = obj->base.dev;
+ int ret;
+
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret)
+ return;
+
+ --obj->vmapping_count;
+ if (obj->vmapping_count == 0) {
+ vunmap(obj->dma_buf_vmapping);
+ obj->dma_buf_vmapping = NULL;
+ }
+ mutex_unlock(&dev->struct_mutex);
+}
+
static void *i915_gem_dmabuf_kmap_atomic(struct dma_buf *dma_buf, unsigned long page_num)
{
return NULL;
@@ -93,6 +146,11 @@ static void i915_gem_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned long page_n
}
+static int i915_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma)
+{
+ return -EINVAL;
+}
+
static const struct dma_buf_ops i915_dmabuf_ops = {
.map_dma_buf = i915_gem_map_dma_buf,
.unmap_dma_buf = i915_gem_unmap_dma_buf,
@@ -101,6 +159,9 @@ static const struct dma_buf_ops i915_dmabuf_ops = {
.kmap_atomic = i915_gem_dmabuf_kmap_atomic,
.kunmap = i915_gem_dmabuf_kunmap,
.kunmap_atomic = i915_gem_dmabuf_kunmap_atomic,
+ .mmap = i915_gem_dmabuf_mmap,
+ .vmap = i915_gem_dmabuf_vmap,
+ .vunmap = i915_gem_dmabuf_vunmap,
};
struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 634d222c93d..8613cb23808 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -123,6 +123,9 @@ struct nouveau_bo {
struct drm_gem_object *gem;
int pin_refcnt;
+
+ struct ttm_bo_kmap_obj dma_buf_vmap;
+ int vmapping_count;
};
#define nouveau_bo_tile_layout(nvbo) \
diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c
index c58aab7370c..a89240e5fb2 100644
--- a/drivers/gpu/drm/nouveau/nouveau_prime.c
+++ b/drivers/gpu/drm/nouveau/nouveau_prime.c
@@ -61,6 +61,48 @@ static void nouveau_gem_kunmap(struct dma_buf *dma_buf, unsigned long page_num,
}
+static int nouveau_gem_prime_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma)
+{
+ return -EINVAL;
+}
+
+static void *nouveau_gem_prime_vmap(struct dma_buf *dma_buf)
+{
+ struct nouveau_bo *nvbo = dma_buf->priv;
+ struct drm_device *dev = nvbo->gem->dev;
+ int ret;
+
+ mutex_lock(&dev->struct_mutex);
+ if (nvbo->vmapping_count) {
+ nvbo->vmapping_count++;
+ goto out_unlock;
+ }
+
+ ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.num_pages,
+ &nvbo->dma_buf_vmap);
+ if (ret) {
+ mutex_unlock(&dev->struct_mutex);
+ return ERR_PTR(ret);
+ }
+ nvbo->vmapping_count = 1;
+out_unlock:
+ mutex_unlock(&dev->struct_mutex);
+ return nvbo->dma_buf_vmap.virtual;
+}
+
+static void nouveau_gem_prime_vunmap(struct dma_buf *dma_buf, void *vaddr)
+{
+ struct nouveau_bo *nvbo = dma_buf->priv;
+ struct drm_device *dev = nvbo->gem->dev;
+
+ mutex_lock(&dev->struct_mutex);
+ nvbo->vmapping_count--;
+ if (nvbo->vmapping_count == 0) {
+ ttm_bo_kunmap(&nvbo->dma_buf_vmap);
+ }
+ mutex_unlock(&dev->struct_mutex);
+}
+
static const struct dma_buf_ops nouveau_dmabuf_ops = {
.map_dma_buf = nouveau_gem_map_dma_buf,
.unmap_dma_buf = nouveau_gem_unmap_dma_buf,
@@ -69,6 +111,9 @@ static const struct dma_buf_ops nouveau_dmabuf_ops = {
.kmap_atomic = nouveau_gem_kmap_atomic,
.kunmap = nouveau_gem_kunmap,
.kunmap_atomic = nouveau_gem_kunmap_atomic,
+ .mmap = nouveau_gem_prime_mmap,
+ .vmap = nouveau_gem_prime_vmap,
+ .vunmap = nouveau_gem_prime_vunmap,
};
static int
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 492654f8ee7..2e24022b389 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -346,6 +346,9 @@ struct radeon_bo {
/* Constant after initialization */
struct radeon_device *rdev;
struct drm_gem_object gem_base;
+
+ 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)
diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c
index b8f835d8ecb..8ddab4c7671 100644
--- a/drivers/gpu/drm/radeon/radeon_prime.c
+++ b/drivers/gpu/drm/radeon/radeon_prime.c
@@ -85,6 +85,47 @@ static void radeon_gem_kunmap(struct dma_buf *dma_buf, unsigned long page_num, v
}
+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;
+
+ 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,
+ &bo->dma_buf_vmap);
+ if (ret) {
+ mutex_unlock(&dev->struct_mutex);
+ return ERR_PTR(ret);
+ }
+ bo->vmapping_count = 1;
+out_unlock:
+ mutex_unlock(&dev->struct_mutex);
+ return bo->dma_buf_vmap.virtual;
+}
+
+static void radeon_gem_prime_vunmap(struct dma_buf *dma_buf, void *vaddr)
+{
+ struct radeon_bo *bo = dma_buf->priv;
+ 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);
+ }
+ mutex_unlock(&dev->struct_mutex);
+}
const static struct dma_buf_ops radeon_dmabuf_ops = {
.map_dma_buf = radeon_gem_map_dma_buf,
.unmap_dma_buf = radeon_gem_unmap_dma_buf,
@@ -93,6 +134,9 @@ const static struct dma_buf_ops radeon_dmabuf_ops = {
.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,
diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
index a029ee39b0c..ce9a6117992 100644
--- a/drivers/gpu/drm/udl/udl_fb.c
+++ b/drivers/gpu/drm/udl/udl_fb.c
@@ -156,8 +156,17 @@ int udl_handle_damage(struct udl_framebuffer *fb, int x, int y,
if (!fb->active_16)
return 0;
- if (!fb->obj->vmapping)
- udl_gem_vmap(fb->obj);
+ if (!fb->obj->vmapping) {
+ ret = udl_gem_vmap(fb->obj);
+ if (ret == -ENOMEM) {
+ DRM_ERROR("failed to vmap fb\n");
+ return 0;
+ }
+ if (!fb->obj->vmapping) {
+ DRM_ERROR("failed to vmapping\n");
+ return 0;
+ }
+ }
start_cycles = get_cycles();
diff --git a/drivers/gpu/drm/udl/udl_gem.c b/drivers/gpu/drm/udl/udl_gem.c
index 97acc9c6c95..7bd65bdd15a 100644
--- a/drivers/gpu/drm/udl/udl_gem.c
+++ b/drivers/gpu/drm/udl/udl_gem.c
@@ -180,6 +180,18 @@ int udl_gem_vmap(struct udl_gem_object *obj)
int page_count = obj->base.size / PAGE_SIZE;
int ret;
+ if (obj->base.import_attach) {
+ ret = dma_buf_begin_cpu_access(obj->base.import_attach->dmabuf,
+ 0, obj->base.size, DMA_BIDIRECTIONAL);
+ if (ret)
+ return -EINVAL;
+
+ obj->vmapping = dma_buf_vmap(obj->base.import_attach->dmabuf);
+ if (!obj->vmapping)
+ return -ENOMEM;
+ return 0;
+ }
+
ret = udl_gem_get_pages(obj, GFP_KERNEL);
if (ret)
return ret;
@@ -192,6 +204,13 @@ int udl_gem_vmap(struct udl_gem_object *obj)
void udl_gem_vunmap(struct udl_gem_object *obj)
{
+ if (obj->base.import_attach) {
+ dma_buf_vunmap(obj->base.import_attach->dmabuf, obj->vmapping);
+ dma_buf_end_cpu_access(obj->base.import_attach->dmabuf, 0,
+ obj->base.size, DMA_BIDIRECTIONAL);
+ return;
+ }
+
if (obj->vmapping)
vunmap(obj->vmapping);
@@ -202,12 +221,12 @@ void udl_gem_free_object(struct drm_gem_object *gem_obj)
{
struct udl_gem_object *obj = to_udl_bo(gem_obj);
- if (gem_obj->import_attach)
- drm_prime_gem_destroy(gem_obj, obj->sg);
-
if (obj->vmapping)
udl_gem_vunmap(obj);
+ if (gem_obj->import_attach)
+ drm_prime_gem_destroy(gem_obj, obj->sg);
+
if (obj->pages)
udl_gem_put_pages(obj);