* [PATCH 2/7] drm/prime: add exported buffers to current fprivs imported buffer list (v2)
2012-05-22 12:49 [PATCH 1/7] drm/prime: introduce sg->pages/addr arrays helper Dave Airlie
@ 2012-05-22 12:49 ` Dave Airlie
2012-05-22 12:50 ` [PATCH 3/7] udl: add prime fd->handle support Dave Airlie
` (5 subsequent siblings)
6 siblings, 0 replies; 15+ messages in thread
From: Dave Airlie @ 2012-05-22 12:49 UTC (permalink / raw)
To: dri-devel
From: Dave Airlie <airlied@redhat.com>
If userspace attempts to import a buffer it exported on the same device,
we need to return the same GEM handle for it, not a new handle pointing
at the same GEM object.
v2: move removals into a single fn, no need to set to NULL. (Chris Wilson)
Signed-off-by: Dave Airlie <airlied@redhat.com>
---
drivers/gpu/drm/drm_gem.c | 21 +++++++++++++++------
drivers/gpu/drm/drm_prime.c | 12 ++++++++++++
2 files changed, 27 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 72ba075..d58e69d 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -201,6 +201,19 @@ free:
}
EXPORT_SYMBOL(drm_gem_object_alloc);
+static void
+drm_gem_remove_prime_handles(struct drm_gem_object *obj, struct drm_file *filp)
+{
+ if (obj->import_attach) {
+ drm_prime_remove_imported_buf_handle(&filp->prime,
+ obj->import_attach->dmabuf);
+ }
+ if (obj->export_dma_buf) {
+ drm_prime_remove_imported_buf_handle(&filp->prime,
+ obj->export_dma_buf);
+ }
+}
+
/**
* Removes the mapping from handle to filp for this object.
*/
@@ -233,9 +246,7 @@ drm_gem_handle_delete(struct drm_file *filp, u32 handle)
idr_remove(&filp->object_idr, handle);
spin_unlock(&filp->table_lock);
- if (obj->import_attach)
- drm_prime_remove_imported_buf_handle(&filp->prime,
- obj->import_attach->dmabuf);
+ drm_gem_remove_prime_handles(obj, filp);
if (dev->driver->gem_close_object)
dev->driver->gem_close_object(obj, filp);
@@ -530,9 +541,7 @@ drm_gem_object_release_handle(int id, void *ptr, void *data)
struct drm_gem_object *obj = ptr;
struct drm_device *dev = obj->dev;
- if (obj->import_attach)
- drm_prime_remove_imported_buf_handle(&file_priv->prime,
- obj->import_attach->dmabuf);
+ drm_gem_remove_prime_handles(obj, file_priv);
if (dev->driver->gem_close_object)
dev->driver->gem_close_object(obj, file_priv);
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 20dbf2c..f546ff9 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -68,6 +68,7 @@ int drm_gem_prime_handle_to_fd(struct drm_device *dev,
{
struct drm_gem_object *obj;
void *buf;
+ int ret;
obj = drm_gem_object_lookup(dev, file_priv, handle);
if (!obj)
@@ -100,6 +101,17 @@ int drm_gem_prime_handle_to_fd(struct drm_device *dev,
obj->export_dma_buf = buf;
*prime_fd = dma_buf_fd(buf, flags);
}
+ /* if we've exported this buffer the cheat and add it to the import list
+ * so we get the correct handle back
+ */
+ ret = drm_prime_add_imported_buf_handle(&file_priv->prime,
+ obj->export_dma_buf, handle);
+ if (ret) {
+ drm_gem_object_unreference_unlocked(obj);
+ mutex_unlock(&file_priv->prime.lock);
+ return ret;
+ }
+
mutex_unlock(&file_priv->prime.lock);
return 0;
}
--
1.7.6
^ permalink raw reply related [flat|nested] 15+ messages in thread* [PATCH 3/7] udl: add prime fd->handle support.
2012-05-22 12:49 [PATCH 1/7] drm/prime: introduce sg->pages/addr arrays helper Dave Airlie
2012-05-22 12:49 ` [PATCH 2/7] drm/prime: add exported buffers to current fprivs imported buffer list (v2) Dave Airlie
@ 2012-05-22 12:50 ` Dave Airlie
2012-05-22 21:11 ` Alex Deucher
2012-05-22 12:50 ` [PATCH 4/7] ttm: add prime sharing support to TTM (v2) Dave Airlie
` (4 subsequent siblings)
6 siblings, 1 reply; 15+ messages in thread
From: Dave Airlie @ 2012-05-22 12:50 UTC (permalink / raw)
To: dri-devel
From: Dave Airlie <airlied@redhat.com>
udl can only be used as an output offload so doesn't need to support
handle->fd direction.
Signed-off-by: Dave Airlie <airlied@redhat.com>
---
drivers/gpu/drm/udl/udl_drv.c | 6 +++-
drivers/gpu/drm/udl/udl_drv.h | 3 ++
drivers/gpu/drm/udl/udl_fb.c | 9 +++++
drivers/gpu/drm/udl/udl_gem.c | 75 +++++++++++++++++++++++++++++++++++++++++
4 files changed, 92 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c
index 82e6921..4d02c46 100644
--- a/drivers/gpu/drm/udl/udl_drv.c
+++ b/drivers/gpu/drm/udl/udl_drv.c
@@ -57,7 +57,7 @@ static const struct file_operations udl_driver_fops = {
};
static struct drm_driver driver = {
- .driver_features = DRIVER_MODESET | DRIVER_GEM,
+ .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
.load = udl_driver_load,
.unload = udl_driver_unload,
@@ -70,6 +70,10 @@ static struct drm_driver driver = {
.dumb_map_offset = udl_gem_mmap,
.dumb_destroy = udl_dumb_destroy,
.fops = &udl_driver_fops,
+
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_import = udl_gem_prime_import,
+
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h
index 96820d0..fccd361 100644
--- a/drivers/gpu/drm/udl/udl_drv.h
+++ b/drivers/gpu/drm/udl/udl_drv.h
@@ -66,6 +66,7 @@ struct udl_gem_object {
struct drm_gem_object base;
struct page **pages;
void *vmapping;
+ struct sg_table *sg;
};
#define to_udl_bo(x) container_of(x, struct udl_gem_object, base)
@@ -118,6 +119,8 @@ int udl_gem_init_object(struct drm_gem_object *obj);
void udl_gem_free_object(struct drm_gem_object *gem_obj);
struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev,
size_t size);
+struct drm_gem_object *udl_gem_prime_import(struct drm_device *dev,
+ struct dma_buf *dma_buf);
int udl_gem_vmap(struct udl_gem_object *obj);
void udl_gem_vunmap(struct udl_gem_object *obj);
diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
index 4d9c3a5..a029ee3 100644
--- a/drivers/gpu/drm/udl/udl_fb.c
+++ b/drivers/gpu/drm/udl/udl_fb.c
@@ -593,11 +593,20 @@ udl_fb_user_fb_create(struct drm_device *dev,
struct drm_gem_object *obj;
struct udl_framebuffer *ufb;
int ret;
+ uint32_t size;
obj = drm_gem_object_lookup(dev, file, mode_cmd->handles[0]);
if (obj == NULL)
return ERR_PTR(-ENOENT);
+ size = mode_cmd->pitches[0] * mode_cmd->height;
+ size = ALIGN(size, PAGE_SIZE);
+
+ if (size > obj->size) {
+ DRM_ERROR("object size not sufficient for fb %d %zu %d %d\n", size, obj->size, mode_cmd->pitches[0], mode_cmd->height);
+ return ERR_PTR(-ENOMEM);
+ }
+
ufb = kzalloc(sizeof(*ufb), GFP_KERNEL);
if (ufb == NULL)
return ERR_PTR(-ENOMEM);
diff --git a/drivers/gpu/drm/udl/udl_gem.c b/drivers/gpu/drm/udl/udl_gem.c
index 92f19ef..40efd32 100644
--- a/drivers/gpu/drm/udl/udl_gem.c
+++ b/drivers/gpu/drm/udl/udl_gem.c
@@ -9,6 +9,7 @@
#include "drmP.h"
#include "udl_drv.h"
#include <linux/shmem_fs.h>
+#include <linux/dma-buf.h>
struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev,
size_t size)
@@ -161,6 +162,12 @@ static void udl_gem_put_pages(struct udl_gem_object *obj)
int page_count = obj->base.size / PAGE_SIZE;
int i;
+ if (obj->base.import_attach) {
+ drm_free_large(obj->pages);
+ obj->pages = NULL;
+ return;
+ }
+
for (i = 0; i < page_count; i++)
page_cache_release(obj->pages[i]);
@@ -195,6 +202,9 @@ 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);
@@ -239,3 +249,68 @@ unlock:
mutex_unlock(&dev->struct_mutex);
return ret;
}
+
+static int udl_prime_create(struct drm_device *dev,
+ size_t size,
+ struct sg_table *sg,
+ struct udl_gem_object **obj_p)
+{
+ struct udl_gem_object *obj;
+ int npages;
+ int i;
+ struct scatterlist *iter;
+
+ npages = size / PAGE_SIZE;
+
+ *obj_p = NULL;
+ obj = udl_gem_alloc_object(dev, npages * PAGE_SIZE);
+ if (!obj)
+ return -ENOMEM;
+
+ obj->sg = sg;
+ obj->pages = drm_malloc_ab(npages, sizeof(struct page *));
+ if (obj->pages == NULL) {
+ DRM_ERROR("obj pages is NULL %d\n", npages);
+ return -ENOMEM;
+ }
+
+ drm_prime_sg_to_page_addr_arrays(sg, obj->pages, NULL, npages);
+
+ *obj_p = obj;
+ return 0;
+}
+
+struct drm_gem_object *udl_gem_prime_import(struct drm_device *dev,
+ struct dma_buf *dma_buf)
+{
+ struct dma_buf_attachment *attach;
+ struct sg_table *sg;
+ struct udl_gem_object *uobj;
+ int ret;
+
+ /* need to attach */
+ attach = dma_buf_attach(dma_buf, dev->dev);
+ if (IS_ERR(attach))
+ return ERR_PTR(PTR_ERR(attach));
+
+ sg = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL);
+ if (IS_ERR(sg)) {
+ ret = PTR_ERR(sg);
+ goto fail_detach;
+ }
+
+ ret = udl_prime_create(dev, dma_buf->size, sg, &uobj);
+ if (ret) {
+ goto fail_unmap;
+ }
+
+ uobj->base.import_attach = attach;
+
+ return &uobj->base;
+
+fail_unmap:
+ dma_buf_unmap_attachment(attach, sg, DMA_BIDIRECTIONAL);
+fail_detach:
+ dma_buf_detach(dma_buf, attach);
+ return ERR_PTR(ret);
+}
--
1.7.6
^ permalink raw reply related [flat|nested] 15+ messages in thread* Re: [PATCH 3/7] udl: add prime fd->handle support.
2012-05-22 12:50 ` [PATCH 3/7] udl: add prime fd->handle support Dave Airlie
@ 2012-05-22 21:11 ` Alex Deucher
0 siblings, 0 replies; 15+ messages in thread
From: Alex Deucher @ 2012-05-22 21:11 UTC (permalink / raw)
To: Dave Airlie; +Cc: dri-devel
On Tue, May 22, 2012 at 8:50 AM, Dave Airlie <airlied@gmail.com> wrote:
> From: Dave Airlie <airlied@redhat.com>
>
> udl can only be used as an output offload so doesn't need to support
> handle->fd direction.
>
> Signed-off-by: Dave Airlie <airlied@redhat.com>
I'm not real familiar with udl, but the code seems straight-forward.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
> ---
> drivers/gpu/drm/udl/udl_drv.c | 6 +++-
> drivers/gpu/drm/udl/udl_drv.h | 3 ++
> drivers/gpu/drm/udl/udl_fb.c | 9 +++++
> drivers/gpu/drm/udl/udl_gem.c | 75 +++++++++++++++++++++++++++++++++++++++++
> 4 files changed, 92 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c
> index 82e6921..4d02c46 100644
> --- a/drivers/gpu/drm/udl/udl_drv.c
> +++ b/drivers/gpu/drm/udl/udl_drv.c
> @@ -57,7 +57,7 @@ static const struct file_operations udl_driver_fops = {
> };
>
> static struct drm_driver driver = {
> - .driver_features = DRIVER_MODESET | DRIVER_GEM,
> + .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
> .load = udl_driver_load,
> .unload = udl_driver_unload,
>
> @@ -70,6 +70,10 @@ static struct drm_driver driver = {
> .dumb_map_offset = udl_gem_mmap,
> .dumb_destroy = udl_dumb_destroy,
> .fops = &udl_driver_fops,
> +
> + .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
> + .gem_prime_import = udl_gem_prime_import,
> +
> .name = DRIVER_NAME,
> .desc = DRIVER_DESC,
> .date = DRIVER_DATE,
> diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h
> index 96820d0..fccd361 100644
> --- a/drivers/gpu/drm/udl/udl_drv.h
> +++ b/drivers/gpu/drm/udl/udl_drv.h
> @@ -66,6 +66,7 @@ struct udl_gem_object {
> struct drm_gem_object base;
> struct page **pages;
> void *vmapping;
> + struct sg_table *sg;
> };
>
> #define to_udl_bo(x) container_of(x, struct udl_gem_object, base)
> @@ -118,6 +119,8 @@ int udl_gem_init_object(struct drm_gem_object *obj);
> void udl_gem_free_object(struct drm_gem_object *gem_obj);
> struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev,
> size_t size);
> +struct drm_gem_object *udl_gem_prime_import(struct drm_device *dev,
> + struct dma_buf *dma_buf);
>
> int udl_gem_vmap(struct udl_gem_object *obj);
> void udl_gem_vunmap(struct udl_gem_object *obj);
> diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
> index 4d9c3a5..a029ee3 100644
> --- a/drivers/gpu/drm/udl/udl_fb.c
> +++ b/drivers/gpu/drm/udl/udl_fb.c
> @@ -593,11 +593,20 @@ udl_fb_user_fb_create(struct drm_device *dev,
> struct drm_gem_object *obj;
> struct udl_framebuffer *ufb;
> int ret;
> + uint32_t size;
>
> obj = drm_gem_object_lookup(dev, file, mode_cmd->handles[0]);
> if (obj == NULL)
> return ERR_PTR(-ENOENT);
>
> + size = mode_cmd->pitches[0] * mode_cmd->height;
> + size = ALIGN(size, PAGE_SIZE);
> +
> + if (size > obj->size) {
> + DRM_ERROR("object size not sufficient for fb %d %zu %d %d\n", size, obj->size, mode_cmd->pitches[0], mode_cmd->height);
> + return ERR_PTR(-ENOMEM);
> + }
> +
> ufb = kzalloc(sizeof(*ufb), GFP_KERNEL);
> if (ufb == NULL)
> return ERR_PTR(-ENOMEM);
> diff --git a/drivers/gpu/drm/udl/udl_gem.c b/drivers/gpu/drm/udl/udl_gem.c
> index 92f19ef..40efd32 100644
> --- a/drivers/gpu/drm/udl/udl_gem.c
> +++ b/drivers/gpu/drm/udl/udl_gem.c
> @@ -9,6 +9,7 @@
> #include "drmP.h"
> #include "udl_drv.h"
> #include <linux/shmem_fs.h>
> +#include <linux/dma-buf.h>
>
> struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev,
> size_t size)
> @@ -161,6 +162,12 @@ static void udl_gem_put_pages(struct udl_gem_object *obj)
> int page_count = obj->base.size / PAGE_SIZE;
> int i;
>
> + if (obj->base.import_attach) {
> + drm_free_large(obj->pages);
> + obj->pages = NULL;
> + return;
> + }
> +
> for (i = 0; i < page_count; i++)
> page_cache_release(obj->pages[i]);
>
> @@ -195,6 +202,9 @@ 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);
>
> @@ -239,3 +249,68 @@ unlock:
> mutex_unlock(&dev->struct_mutex);
> return ret;
> }
> +
> +static int udl_prime_create(struct drm_device *dev,
> + size_t size,
> + struct sg_table *sg,
> + struct udl_gem_object **obj_p)
> +{
> + struct udl_gem_object *obj;
> + int npages;
> + int i;
> + struct scatterlist *iter;
> +
> + npages = size / PAGE_SIZE;
> +
> + *obj_p = NULL;
> + obj = udl_gem_alloc_object(dev, npages * PAGE_SIZE);
> + if (!obj)
> + return -ENOMEM;
> +
> + obj->sg = sg;
> + obj->pages = drm_malloc_ab(npages, sizeof(struct page *));
> + if (obj->pages == NULL) {
> + DRM_ERROR("obj pages is NULL %d\n", npages);
> + return -ENOMEM;
> + }
> +
> + drm_prime_sg_to_page_addr_arrays(sg, obj->pages, NULL, npages);
> +
> + *obj_p = obj;
> + return 0;
> +}
> +
> +struct drm_gem_object *udl_gem_prime_import(struct drm_device *dev,
> + struct dma_buf *dma_buf)
> +{
> + struct dma_buf_attachment *attach;
> + struct sg_table *sg;
> + struct udl_gem_object *uobj;
> + int ret;
> +
> + /* need to attach */
> + attach = dma_buf_attach(dma_buf, dev->dev);
> + if (IS_ERR(attach))
> + return ERR_PTR(PTR_ERR(attach));
> +
> + sg = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL);
> + if (IS_ERR(sg)) {
> + ret = PTR_ERR(sg);
> + goto fail_detach;
> + }
> +
> + ret = udl_prime_create(dev, dma_buf->size, sg, &uobj);
> + if (ret) {
> + goto fail_unmap;
> + }
> +
> + uobj->base.import_attach = attach;
> +
> + return &uobj->base;
> +
> +fail_unmap:
> + dma_buf_unmap_attachment(attach, sg, DMA_BIDIRECTIONAL);
> +fail_detach:
> + dma_buf_detach(dma_buf, attach);
> + return ERR_PTR(ret);
> +}
> --
> 1.7.6
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 15+ messages in thread
* [PATCH 4/7] ttm: add prime sharing support to TTM (v2)
2012-05-22 12:49 [PATCH 1/7] drm/prime: introduce sg->pages/addr arrays helper Dave Airlie
2012-05-22 12:49 ` [PATCH 2/7] drm/prime: add exported buffers to current fprivs imported buffer list (v2) Dave Airlie
2012-05-22 12:50 ` [PATCH 3/7] udl: add prime fd->handle support Dave Airlie
@ 2012-05-22 12:50 ` Dave Airlie
2012-05-22 20:55 ` Jerome Glisse
2012-05-22 21:09 ` Alex Deucher
2012-05-22 12:50 ` [PATCH 5/7] nouveau: add PRIME support Dave Airlie
` (3 subsequent siblings)
6 siblings, 2 replies; 15+ messages in thread
From: Dave Airlie @ 2012-05-22 12:50 UTC (permalink / raw)
To: dri-devel
From: Dave Airlie <airlied@redhat.com>
This adds the ability for ttm common code to take an SG table
and use it as the backing for a slave TTM object.
The drivers can then populate their GTT tables using the SG object.
v2: make sure to setup VM for sg bos as well.
Signed-off-by: Dave Airlie <airlied@redhat.com>
---
drivers/gpu/drm/nouveau/nouveau_bo.c | 2 +-
drivers/gpu/drm/radeon/radeon_object.c | 2 +-
drivers/gpu/drm/ttm/ttm_bo.c | 17 +++++++++++++++--
drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 2 +-
include/drm/ttm/ttm_bo_api.h | 9 ++++++++-
include/drm/ttm/ttm_bo_driver.h | 2 ++
6 files changed, 28 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 12ce044..81599d6 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -121,7 +121,7 @@ nouveau_bo_new(struct drm_device *dev, int size, int align,
ret = ttm_bo_init(&dev_priv->ttm.bdev, &nvbo->bo, size,
ttm_bo_type_device, &nvbo->placement,
- align >> PAGE_SHIFT, 0, false, NULL, acc_size,
+ align >> PAGE_SHIFT, 0, false, NULL, acc_size, NULL,
nouveau_bo_del_ttm);
if (ret) {
/* ttm will call nouveau_bo_del_ttm if it fails.. */
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index df6a4db..1affbc9 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -155,7 +155,7 @@ retry:
mutex_lock(&rdev->vram_mutex);
r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type,
&bo->placement, page_align, 0, !kernel, NULL,
- acc_size, &radeon_ttm_bo_destroy);
+ acc_size, NULL, &radeon_ttm_bo_destroy);
mutex_unlock(&rdev->vram_mutex);
if (unlikely(r != 0)) {
if (r != -ERESTARTSYS) {
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 1f5c67c..36792bd 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -343,6 +343,16 @@ static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc)
if (unlikely(bo->ttm == NULL))
ret = -ENOMEM;
break;
+ case ttm_bo_type_sg:
+ bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT,
+ page_flags | TTM_PAGE_FLAG_SG,
+ glob->dummy_read_page);
+ if (unlikely(bo->ttm == NULL)) {
+ ret = -ENOMEM;
+ break;
+ }
+ bo->ttm->sg = bo->sg;
+ break;
default:
pr_err("Illegal buffer object type\n");
ret = -EINVAL;
@@ -1169,6 +1179,7 @@ int ttm_bo_init(struct ttm_bo_device *bdev,
bool interruptible,
struct file *persistent_swap_storage,
size_t acc_size,
+ struct sg_table *sg,
void (*destroy) (struct ttm_buffer_object *))
{
int ret = 0;
@@ -1223,6 +1234,7 @@ int ttm_bo_init(struct ttm_bo_device *bdev,
bo->seq_valid = false;
bo->persistent_swap_storage = persistent_swap_storage;
bo->acc_size = acc_size;
+ bo->sg = sg;
atomic_inc(&bo->glob->bo_count);
ret = ttm_bo_check_placement(bo, placement);
@@ -1233,7 +1245,8 @@ int ttm_bo_init(struct ttm_bo_device *bdev,
* For ttm_bo_type_device buffers, allocate
* address space from the device.
*/
- if (bo->type == ttm_bo_type_device) {
+ if (bo->type == ttm_bo_type_device ||
+ bo->type == ttm_bo_type_sg) {
ret = ttm_bo_setup_vm(bo);
if (ret)
goto out_err;
@@ -1312,7 +1325,7 @@ int ttm_bo_create(struct ttm_bo_device *bdev,
ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment,
buffer_start, interruptible,
- persistent_swap_storage, acc_size, NULL);
+ persistent_swap_storage, acc_size, NULL, NULL);
if (likely(ret == 0))
*p_bo = bo;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
index a37abb5..22bf9a2 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
@@ -1567,7 +1567,7 @@ int vmw_dmabuf_init(struct vmw_private *dev_priv,
ret = ttm_bo_init(bdev, &vmw_bo->base, size,
ttm_bo_type_device, placement,
0, 0, interruptible,
- NULL, acc_size, bo_free);
+ NULL, acc_size, NULL, bo_free);
return ret;
}
diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
index 974c8f8..e15f2a8 100644
--- a/include/drm/ttm/ttm_bo_api.h
+++ b/include/drm/ttm/ttm_bo_api.h
@@ -124,11 +124,15 @@ struct ttm_mem_reg {
*
* @ttm_bo_type_kernel: These buffers are like ttm_bo_type_device buffers,
* but they cannot be accessed from user-space. For kernel-only use.
+ *
+ * @ttm_bo_type_sg: Buffer made from dmabuf sg table shared with another
+ * driver.
*/
enum ttm_bo_type {
ttm_bo_type_device,
- ttm_bo_type_kernel
+ ttm_bo_type_kernel,
+ ttm_bo_type_sg
};
struct ttm_tt;
@@ -271,6 +275,8 @@ struct ttm_buffer_object {
unsigned long offset;
uint32_t cur_placement;
+
+ struct sg_table *sg;
};
/**
@@ -503,6 +509,7 @@ extern int ttm_bo_init(struct ttm_bo_device *bdev,
bool interrubtible,
struct file *persistent_swap_storage,
size_t acc_size,
+ struct sg_table *sg,
void (*destroy) (struct ttm_buffer_object *));
/**
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index d43e892..a05f1b5 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -81,6 +81,7 @@ struct ttm_backend_func {
#define TTM_PAGE_FLAG_PERSISTENT_SWAP (1 << 5)
#define TTM_PAGE_FLAG_ZERO_ALLOC (1 << 6)
#define TTM_PAGE_FLAG_DMA32 (1 << 7)
+#define TTM_PAGE_FLAG_SG (1 << 8)
enum ttm_caching_state {
tt_uncached,
@@ -116,6 +117,7 @@ struct ttm_tt {
struct page **pages;
uint32_t page_flags;
unsigned long num_pages;
+ struct sg_table *sg; /* for SG objects via dma-buf */
struct ttm_bo_global *glob;
struct ttm_backend *be;
struct file *swap_storage;
--
1.7.6
^ permalink raw reply related [flat|nested] 15+ messages in thread* Re: [PATCH 4/7] ttm: add prime sharing support to TTM (v2)
2012-05-22 12:50 ` [PATCH 4/7] ttm: add prime sharing support to TTM (v2) Dave Airlie
@ 2012-05-22 20:55 ` Jerome Glisse
2012-05-22 21:09 ` Alex Deucher
1 sibling, 0 replies; 15+ messages in thread
From: Jerome Glisse @ 2012-05-22 20:55 UTC (permalink / raw)
To: Dave Airlie; +Cc: dri-devel
On Tue, May 22, 2012 at 8:50 AM, Dave Airlie <airlied@gmail.com> wrote:
> From: Dave Airlie <airlied@redhat.com>
>
> This adds the ability for ttm common code to take an SG table
> and use it as the backing for a slave TTM object.
>
> The drivers can then populate their GTT tables using the SG object.
>
> v2: make sure to setup VM for sg bos as well.
>
> Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
> ---
> drivers/gpu/drm/nouveau/nouveau_bo.c | 2 +-
> drivers/gpu/drm/radeon/radeon_object.c | 2 +-
> drivers/gpu/drm/ttm/ttm_bo.c | 17 +++++++++++++++--
> drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 2 +-
> include/drm/ttm/ttm_bo_api.h | 9 ++++++++-
> include/drm/ttm/ttm_bo_driver.h | 2 ++
> 6 files changed, 28 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
> index 12ce044..81599d6 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_bo.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
> @@ -121,7 +121,7 @@ nouveau_bo_new(struct drm_device *dev, int size, int align,
>
> ret = ttm_bo_init(&dev_priv->ttm.bdev, &nvbo->bo, size,
> ttm_bo_type_device, &nvbo->placement,
> - align >> PAGE_SHIFT, 0, false, NULL, acc_size,
> + align >> PAGE_SHIFT, 0, false, NULL, acc_size, NULL,
> nouveau_bo_del_ttm);
> if (ret) {
> /* ttm will call nouveau_bo_del_ttm if it fails.. */
> diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
> index df6a4db..1affbc9 100644
> --- a/drivers/gpu/drm/radeon/radeon_object.c
> +++ b/drivers/gpu/drm/radeon/radeon_object.c
> @@ -155,7 +155,7 @@ retry:
> mutex_lock(&rdev->vram_mutex);
> r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type,
> &bo->placement, page_align, 0, !kernel, NULL,
> - acc_size, &radeon_ttm_bo_destroy);
> + acc_size, NULL, &radeon_ttm_bo_destroy);
> mutex_unlock(&rdev->vram_mutex);
> if (unlikely(r != 0)) {
> if (r != -ERESTARTSYS) {
> diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
> index 1f5c67c..36792bd 100644
> --- a/drivers/gpu/drm/ttm/ttm_bo.c
> +++ b/drivers/gpu/drm/ttm/ttm_bo.c
> @@ -343,6 +343,16 @@ static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc)
> if (unlikely(bo->ttm == NULL))
> ret = -ENOMEM;
> break;
> + case ttm_bo_type_sg:
> + bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT,
> + page_flags | TTM_PAGE_FLAG_SG,
> + glob->dummy_read_page);
> + if (unlikely(bo->ttm == NULL)) {
> + ret = -ENOMEM;
> + break;
> + }
> + bo->ttm->sg = bo->sg;
> + break;
> default:
> pr_err("Illegal buffer object type\n");
> ret = -EINVAL;
> @@ -1169,6 +1179,7 @@ int ttm_bo_init(struct ttm_bo_device *bdev,
> bool interruptible,
> struct file *persistent_swap_storage,
> size_t acc_size,
> + struct sg_table *sg,
> void (*destroy) (struct ttm_buffer_object *))
> {
> int ret = 0;
> @@ -1223,6 +1234,7 @@ int ttm_bo_init(struct ttm_bo_device *bdev,
> bo->seq_valid = false;
> bo->persistent_swap_storage = persistent_swap_storage;
> bo->acc_size = acc_size;
> + bo->sg = sg;
> atomic_inc(&bo->glob->bo_count);
>
> ret = ttm_bo_check_placement(bo, placement);
> @@ -1233,7 +1245,8 @@ int ttm_bo_init(struct ttm_bo_device *bdev,
> * For ttm_bo_type_device buffers, allocate
> * address space from the device.
> */
> - if (bo->type == ttm_bo_type_device) {
> + if (bo->type == ttm_bo_type_device ||
> + bo->type == ttm_bo_type_sg) {
> ret = ttm_bo_setup_vm(bo);
> if (ret)
> goto out_err;
> @@ -1312,7 +1325,7 @@ int ttm_bo_create(struct ttm_bo_device *bdev,
>
> ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment,
> buffer_start, interruptible,
> - persistent_swap_storage, acc_size, NULL);
> + persistent_swap_storage, acc_size, NULL, NULL);
> if (likely(ret == 0))
> *p_bo = bo;
>
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
> index a37abb5..22bf9a2 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
> @@ -1567,7 +1567,7 @@ int vmw_dmabuf_init(struct vmw_private *dev_priv,
> ret = ttm_bo_init(bdev, &vmw_bo->base, size,
> ttm_bo_type_device, placement,
> 0, 0, interruptible,
> - NULL, acc_size, bo_free);
> + NULL, acc_size, NULL, bo_free);
> return ret;
> }
>
> diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
> index 974c8f8..e15f2a8 100644
> --- a/include/drm/ttm/ttm_bo_api.h
> +++ b/include/drm/ttm/ttm_bo_api.h
> @@ -124,11 +124,15 @@ struct ttm_mem_reg {
> *
> * @ttm_bo_type_kernel: These buffers are like ttm_bo_type_device buffers,
> * but they cannot be accessed from user-space. For kernel-only use.
> + *
> + * @ttm_bo_type_sg: Buffer made from dmabuf sg table shared with another
> + * driver.
> */
>
> enum ttm_bo_type {
> ttm_bo_type_device,
> - ttm_bo_type_kernel
> + ttm_bo_type_kernel,
> + ttm_bo_type_sg
> };
>
> struct ttm_tt;
> @@ -271,6 +275,8 @@ struct ttm_buffer_object {
>
> unsigned long offset;
> uint32_t cur_placement;
> +
> + struct sg_table *sg;
> };
>
> /**
> @@ -503,6 +509,7 @@ extern int ttm_bo_init(struct ttm_bo_device *bdev,
> bool interrubtible,
> struct file *persistent_swap_storage,
> size_t acc_size,
> + struct sg_table *sg,
> void (*destroy) (struct ttm_buffer_object *));
>
> /**
> diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
> index d43e892..a05f1b5 100644
> --- a/include/drm/ttm/ttm_bo_driver.h
> +++ b/include/drm/ttm/ttm_bo_driver.h
> @@ -81,6 +81,7 @@ struct ttm_backend_func {
> #define TTM_PAGE_FLAG_PERSISTENT_SWAP (1 << 5)
> #define TTM_PAGE_FLAG_ZERO_ALLOC (1 << 6)
> #define TTM_PAGE_FLAG_DMA32 (1 << 7)
> +#define TTM_PAGE_FLAG_SG (1 << 8)
>
> enum ttm_caching_state {
> tt_uncached,
> @@ -116,6 +117,7 @@ struct ttm_tt {
> struct page **pages;
> uint32_t page_flags;
> unsigned long num_pages;
> + struct sg_table *sg; /* for SG objects via dma-buf */
> struct ttm_bo_global *glob;
> struct ttm_backend *be;
> struct file *swap_storage;
> --
> 1.7.6
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 15+ messages in thread* Re: [PATCH 4/7] ttm: add prime sharing support to TTM (v2)
2012-05-22 12:50 ` [PATCH 4/7] ttm: add prime sharing support to TTM (v2) Dave Airlie
2012-05-22 20:55 ` Jerome Glisse
@ 2012-05-22 21:09 ` Alex Deucher
1 sibling, 0 replies; 15+ messages in thread
From: Alex Deucher @ 2012-05-22 21:09 UTC (permalink / raw)
To: Dave Airlie; +Cc: dri-devel
On Tue, May 22, 2012 at 8:50 AM, Dave Airlie <airlied@gmail.com> wrote:
> From: Dave Airlie <airlied@redhat.com>
>
> This adds the ability for ttm common code to take an SG table
> and use it as the backing for a slave TTM object.
>
> The drivers can then populate their GTT tables using the SG object.
>
> v2: make sure to setup VM for sg bos as well.
>
> Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
> ---
> drivers/gpu/drm/nouveau/nouveau_bo.c | 2 +-
> drivers/gpu/drm/radeon/radeon_object.c | 2 +-
> drivers/gpu/drm/ttm/ttm_bo.c | 17 +++++++++++++++--
> drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 2 +-
> include/drm/ttm/ttm_bo_api.h | 9 ++++++++-
> include/drm/ttm/ttm_bo_driver.h | 2 ++
> 6 files changed, 28 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
> index 12ce044..81599d6 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_bo.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
> @@ -121,7 +121,7 @@ nouveau_bo_new(struct drm_device *dev, int size, int align,
>
> ret = ttm_bo_init(&dev_priv->ttm.bdev, &nvbo->bo, size,
> ttm_bo_type_device, &nvbo->placement,
> - align >> PAGE_SHIFT, 0, false, NULL, acc_size,
> + align >> PAGE_SHIFT, 0, false, NULL, acc_size, NULL,
> nouveau_bo_del_ttm);
> if (ret) {
> /* ttm will call nouveau_bo_del_ttm if it fails.. */
> diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
> index df6a4db..1affbc9 100644
> --- a/drivers/gpu/drm/radeon/radeon_object.c
> +++ b/drivers/gpu/drm/radeon/radeon_object.c
> @@ -155,7 +155,7 @@ retry:
> mutex_lock(&rdev->vram_mutex);
> r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type,
> &bo->placement, page_align, 0, !kernel, NULL,
> - acc_size, &radeon_ttm_bo_destroy);
> + acc_size, NULL, &radeon_ttm_bo_destroy);
> mutex_unlock(&rdev->vram_mutex);
> if (unlikely(r != 0)) {
> if (r != -ERESTARTSYS) {
> diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
> index 1f5c67c..36792bd 100644
> --- a/drivers/gpu/drm/ttm/ttm_bo.c
> +++ b/drivers/gpu/drm/ttm/ttm_bo.c
> @@ -343,6 +343,16 @@ static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc)
> if (unlikely(bo->ttm == NULL))
> ret = -ENOMEM;
> break;
> + case ttm_bo_type_sg:
> + bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT,
> + page_flags | TTM_PAGE_FLAG_SG,
> + glob->dummy_read_page);
> + if (unlikely(bo->ttm == NULL)) {
> + ret = -ENOMEM;
> + break;
> + }
> + bo->ttm->sg = bo->sg;
> + break;
> default:
> pr_err("Illegal buffer object type\n");
> ret = -EINVAL;
> @@ -1169,6 +1179,7 @@ int ttm_bo_init(struct ttm_bo_device *bdev,
> bool interruptible,
> struct file *persistent_swap_storage,
> size_t acc_size,
> + struct sg_table *sg,
> void (*destroy) (struct ttm_buffer_object *))
> {
> int ret = 0;
> @@ -1223,6 +1234,7 @@ int ttm_bo_init(struct ttm_bo_device *bdev,
> bo->seq_valid = false;
> bo->persistent_swap_storage = persistent_swap_storage;
> bo->acc_size = acc_size;
> + bo->sg = sg;
> atomic_inc(&bo->glob->bo_count);
>
> ret = ttm_bo_check_placement(bo, placement);
> @@ -1233,7 +1245,8 @@ int ttm_bo_init(struct ttm_bo_device *bdev,
> * For ttm_bo_type_device buffers, allocate
> * address space from the device.
> */
> - if (bo->type == ttm_bo_type_device) {
> + if (bo->type == ttm_bo_type_device ||
> + bo->type == ttm_bo_type_sg) {
> ret = ttm_bo_setup_vm(bo);
> if (ret)
> goto out_err;
> @@ -1312,7 +1325,7 @@ int ttm_bo_create(struct ttm_bo_device *bdev,
>
> ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment,
> buffer_start, interruptible,
> - persistent_swap_storage, acc_size, NULL);
> + persistent_swap_storage, acc_size, NULL, NULL);
> if (likely(ret == 0))
> *p_bo = bo;
>
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
> index a37abb5..22bf9a2 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
> @@ -1567,7 +1567,7 @@ int vmw_dmabuf_init(struct vmw_private *dev_priv,
> ret = ttm_bo_init(bdev, &vmw_bo->base, size,
> ttm_bo_type_device, placement,
> 0, 0, interruptible,
> - NULL, acc_size, bo_free);
> + NULL, acc_size, NULL, bo_free);
> return ret;
> }
>
> diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
> index 974c8f8..e15f2a8 100644
> --- a/include/drm/ttm/ttm_bo_api.h
> +++ b/include/drm/ttm/ttm_bo_api.h
> @@ -124,11 +124,15 @@ struct ttm_mem_reg {
> *
> * @ttm_bo_type_kernel: These buffers are like ttm_bo_type_device buffers,
> * but they cannot be accessed from user-space. For kernel-only use.
> + *
> + * @ttm_bo_type_sg: Buffer made from dmabuf sg table shared with another
> + * driver.
> */
>
> enum ttm_bo_type {
> ttm_bo_type_device,
> - ttm_bo_type_kernel
> + ttm_bo_type_kernel,
> + ttm_bo_type_sg
> };
>
> struct ttm_tt;
> @@ -271,6 +275,8 @@ struct ttm_buffer_object {
>
> unsigned long offset;
> uint32_t cur_placement;
> +
> + struct sg_table *sg;
> };
>
> /**
> @@ -503,6 +509,7 @@ extern int ttm_bo_init(struct ttm_bo_device *bdev,
> bool interrubtible,
> struct file *persistent_swap_storage,
> size_t acc_size,
> + struct sg_table *sg,
> void (*destroy) (struct ttm_buffer_object *));
>
> /**
> diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
> index d43e892..a05f1b5 100644
> --- a/include/drm/ttm/ttm_bo_driver.h
> +++ b/include/drm/ttm/ttm_bo_driver.h
> @@ -81,6 +81,7 @@ struct ttm_backend_func {
> #define TTM_PAGE_FLAG_PERSISTENT_SWAP (1 << 5)
> #define TTM_PAGE_FLAG_ZERO_ALLOC (1 << 6)
> #define TTM_PAGE_FLAG_DMA32 (1 << 7)
> +#define TTM_PAGE_FLAG_SG (1 << 8)
>
> enum ttm_caching_state {
> tt_uncached,
> @@ -116,6 +117,7 @@ struct ttm_tt {
> struct page **pages;
> uint32_t page_flags;
> unsigned long num_pages;
> + struct sg_table *sg; /* for SG objects via dma-buf */
> struct ttm_bo_global *glob;
> struct ttm_backend *be;
> struct file *swap_storage;
> --
> 1.7.6
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 15+ messages in thread
* [PATCH 5/7] nouveau: add PRIME support
2012-05-22 12:49 [PATCH 1/7] drm/prime: introduce sg->pages/addr arrays helper Dave Airlie
` (2 preceding siblings ...)
2012-05-22 12:50 ` [PATCH 4/7] ttm: add prime sharing support to TTM (v2) Dave Airlie
@ 2012-05-22 12:50 ` Dave Airlie
2012-05-22 21:13 ` Alex Deucher
2012-05-22 12:50 ` [PATCH 6/7] i915: add dmabuf/prime buffer sharing support Dave Airlie
` (2 subsequent siblings)
6 siblings, 1 reply; 15+ messages in thread
From: Dave Airlie @ 2012-05-22 12:50 UTC (permalink / raw)
To: dri-devel
From: Dave Airlie <airlied@redhat.com>
This adds prime->fd and fd->prime support to nouveau,
it passes the SG object to TTM, and then populates the
GART entries using it.
v2: add stubbed kmap + use new function to fill out pages array
for faulting + add reimport test.
Signed-off-by: Dave Airlie <airlied@redhat.com>
---
drivers/gpu/drm/nouveau/Makefile | 2 +-
drivers/gpu/drm/nouveau/nouveau_bo.c | 42 ++++++--
drivers/gpu/drm/nouveau/nouveau_channel.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_drv.c | 8 ++-
drivers/gpu/drm/nouveau/nouveau_drv.h | 10 ++-
drivers/gpu/drm/nouveau/nouveau_fence.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_gem.c | 6 +-
drivers/gpu/drm/nouveau/nouveau_mem.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_prime.c | 163 +++++++++++++++++++++++++++++
drivers/gpu/drm/nouveau/nouveau_sgdma.c | 5 +-
drivers/gpu/drm/nouveau/nouveau_vm.c | 57 ++++++++++
drivers/gpu/drm/nouveau/nouveau_vm.h | 6 +-
drivers/gpu/drm/nouveau/nv04_crtc.c | 2 +-
drivers/gpu/drm/nouveau/nv50_crtc.c | 4 +-
drivers/gpu/drm/nouveau/nv50_evo.c | 4 +-
drivers/gpu/drm/nouveau/nvd0_display.c | 6 +-
16 files changed, 296 insertions(+), 25 deletions(-)
create mode 100644 drivers/gpu/drm/nouveau/nouveau_prime.c
diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile
index 1a2ad7e..01f1335 100644
--- a/drivers/gpu/drm/nouveau/Makefile
+++ b/drivers/gpu/drm/nouveau/Makefile
@@ -37,7 +37,7 @@ nouveau-y := nouveau_drv.o nouveau_state.o nouveau_channel.o nouveau_mem.o \
nv50_calc.o \
nv04_pm.o nv40_pm.o nv50_pm.o nva3_pm.o nvc0_pm.o \
nv50_vram.o nvc0_vram.o \
- nv50_vm.o nvc0_vm.o
+ nv50_vm.o nvc0_vm.o nouveau_prime.o
nouveau-$(CONFIG_DRM_NOUVEAU_DEBUG) += nouveau_debugfs.o
nouveau-$(CONFIG_COMPAT) += nouveau_ioc32.o
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 81599d6..4435e11 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -89,12 +89,17 @@ nouveau_bo_fixup_align(struct nouveau_bo *nvbo, u32 flags,
int
nouveau_bo_new(struct drm_device *dev, int size, int align,
uint32_t flags, uint32_t tile_mode, uint32_t tile_flags,
+ struct sg_table *sg,
struct nouveau_bo **pnvbo)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_bo *nvbo;
size_t acc_size;
int ret;
+ int type = ttm_bo_type_device;
+
+ if (sg)
+ type = ttm_bo_type_sg;
nvbo = kzalloc(sizeof(struct nouveau_bo), GFP_KERNEL);
if (!nvbo)
@@ -120,8 +125,8 @@ nouveau_bo_new(struct drm_device *dev, int size, int align,
sizeof(struct nouveau_bo));
ret = ttm_bo_init(&dev_priv->ttm.bdev, &nvbo->bo, size,
- ttm_bo_type_device, &nvbo->placement,
- align >> PAGE_SHIFT, 0, false, NULL, acc_size, NULL,
+ type, &nvbo->placement,
+ align >> PAGE_SHIFT, 0, false, NULL, acc_size, sg,
nouveau_bo_del_ttm);
if (ret) {
/* ttm will call nouveau_bo_del_ttm if it fails.. */
@@ -817,9 +822,14 @@ nouveau_bo_move_ntfy(struct ttm_buffer_object *bo, struct ttm_mem_reg *new_mem)
} else
if (new_mem && new_mem->mem_type == TTM_PL_TT &&
nvbo->page_shift == vma->vm->spg_shift) {
- nouveau_vm_map_sg(vma, 0, new_mem->
- num_pages << PAGE_SHIFT,
- new_mem->mm_node);
+ if (((struct nouveau_mem *)new_mem->mm_node)->sg)
+ nouveau_vm_map_sg_table(vma, 0, new_mem->
+ num_pages << PAGE_SHIFT,
+ new_mem->mm_node);
+ else
+ nouveau_vm_map_sg(vma, 0, new_mem->
+ num_pages << PAGE_SHIFT,
+ new_mem->mm_node);
} else {
nouveau_vm_unmap(vma);
}
@@ -1058,10 +1068,19 @@ nouveau_ttm_tt_populate(struct ttm_tt *ttm)
struct drm_device *dev;
unsigned i;
int r;
+ bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
if (ttm->state != tt_unpopulated)
return 0;
+ if (slave && ttm->sg) {
+ /* make userspace faulting work */
+ drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages,
+ ttm_dma->dma_address, ttm->num_pages);
+ ttm->state = tt_unbound;
+ return 0;
+ }
+
dev_priv = nouveau_bdev(ttm->bdev);
dev = dev_priv->dev;
@@ -1106,6 +1125,10 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm)
struct drm_nouveau_private *dev_priv;
struct drm_device *dev;
unsigned i;
+ bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
+
+ if (slave)
+ return;
dev_priv = nouveau_bdev(ttm->bdev);
dev = dev_priv->dev;
@@ -1181,9 +1204,12 @@ nouveau_bo_vma_add(struct nouveau_bo *nvbo, struct nouveau_vm *vm,
if (nvbo->bo.mem.mem_type == TTM_PL_VRAM)
nouveau_vm_map(vma, nvbo->bo.mem.mm_node);
- else
- if (nvbo->bo.mem.mem_type == TTM_PL_TT)
- nouveau_vm_map_sg(vma, 0, size, node);
+ else if (nvbo->bo.mem.mem_type == TTM_PL_TT) {
+ if (node->sg)
+ nouveau_vm_map_sg_table(vma, 0, size, node);
+ else
+ nouveau_vm_map_sg(vma, 0, size, node);
+ }
list_add_tail(&vma->head, &nvbo->vma_list);
vma->refcount = 1;
diff --git a/drivers/gpu/drm/nouveau/nouveau_channel.c b/drivers/gpu/drm/nouveau/nouveau_channel.c
index 846afb0..730bbb2 100644
--- a/drivers/gpu/drm/nouveau/nouveau_channel.c
+++ b/drivers/gpu/drm/nouveau/nouveau_channel.c
@@ -38,7 +38,7 @@ nouveau_channel_pushbuf_init(struct nouveau_channel *chan)
int ret;
/* allocate buffer object */
- ret = nouveau_bo_new(dev, 65536, 0, mem, 0, 0, &chan->pushbuf_bo);
+ ret = nouveau_bo_new(dev, 65536, 0, mem, 0, 0, NULL, &chan->pushbuf_bo);
if (ret)
goto out;
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.c b/drivers/gpu/drm/nouveau/nouveau_drv.c
index 4f2030b..b394ecf 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.c
@@ -408,7 +408,7 @@ static struct drm_driver driver = {
.driver_features =
DRIVER_USE_AGP | DRIVER_PCI_DMA | DRIVER_SG |
DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM |
- DRIVER_MODESET,
+ DRIVER_MODESET | DRIVER_PRIME,
.load = nouveau_load,
.firstopen = nouveau_firstopen,
.lastclose = nouveau_lastclose,
@@ -430,6 +430,12 @@ static struct drm_driver driver = {
.reclaim_buffers = drm_core_reclaim_buffers,
.ioctls = nouveau_ioctls,
.fops = &nouveau_driver_fops,
+
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_export = nouveau_gem_prime_export,
+ .gem_prime_import = nouveau_gem_prime_import,
+
.gem_init_object = nouveau_gem_object_new,
.gem_free_object = nouveau_gem_object_del,
.gem_open_object = nouveau_gem_object_open,
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 3aef353..92c9a8a 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -86,6 +86,7 @@ struct nouveau_mem {
u32 memtype;
u64 offset;
u64 size;
+ struct sg_table *sg;
};
struct nouveau_tile_reg {
@@ -1416,7 +1417,9 @@ extern int nv04_crtc_create(struct drm_device *, int index);
extern struct ttm_bo_driver nouveau_bo_driver;
extern int nouveau_bo_new(struct drm_device *, int size, int align,
uint32_t flags, uint32_t tile_mode,
- uint32_t tile_flags, struct nouveau_bo **);
+ uint32_t tile_flags,
+ struct sg_table *sg,
+ struct nouveau_bo **);
extern int nouveau_bo_pin(struct nouveau_bo *, uint32_t flags);
extern int nouveau_bo_unpin(struct nouveau_bo *);
extern int nouveau_bo_map(struct nouveau_bo *);
@@ -1501,6 +1504,11 @@ extern int nouveau_gem_ioctl_cpu_fini(struct drm_device *, void *,
extern int nouveau_gem_ioctl_info(struct drm_device *, void *,
struct drm_file *);
+extern struct dma_buf *nouveau_gem_prime_export(struct drm_device *dev,
+ struct drm_gem_object *obj, int flags);
+extern struct drm_gem_object *nouveau_gem_prime_import(struct drm_device *dev,
+ struct dma_buf *dma_buf);
+
/* nouveau_display.c */
int nouveau_display_create(struct drm_device *dev);
void nouveau_display_destroy(struct drm_device *dev);
diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c
index c1dc20f..965e3d2 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fence.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fence.c
@@ -573,7 +573,7 @@ nouveau_fence_init(struct drm_device *dev)
/* Create a shared VRAM heap for cross-channel sync. */
if (USE_SEMA(dev)) {
ret = nouveau_bo_new(dev, size, 0, TTM_PL_FLAG_VRAM,
- 0, 0, &dev_priv->fence.bo);
+ 0, 0, NULL, &dev_priv->fence.bo);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
index ed52a6f..666dad0 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
@@ -23,6 +23,7 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
+#include <linux/dma-buf.h>
#include "drmP.h"
#include "drm.h"
@@ -53,6 +54,9 @@ nouveau_gem_object_del(struct drm_gem_object *gem)
nouveau_bo_unpin(nvbo);
}
+ if (gem->import_attach)
+ drm_prime_gem_destroy(gem, nvbo->bo.sg);
+
ttm_bo_unref(&bo);
drm_gem_object_release(gem);
@@ -139,7 +143,7 @@ nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
flags |= TTM_PL_FLAG_SYSTEM;
ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
- tile_flags, pnvbo);
+ tile_flags, NULL, pnvbo);
if (ret)
return ret;
nvbo = *pnvbo;
diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c
index b08065f..bb2f0a4 100644
--- a/drivers/gpu/drm/nouveau/nouveau_mem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_mem.c
@@ -416,7 +416,7 @@ nouveau_mem_vram_init(struct drm_device *dev)
if (dev_priv->card_type < NV_50) {
ret = nouveau_bo_new(dev, 256*1024, 0, TTM_PL_FLAG_VRAM,
- 0, 0, &dev_priv->vga_ram);
+ 0, 0, NULL, &dev_priv->vga_ram);
if (ret == 0)
ret = nouveau_bo_pin(dev_priv->vga_ram,
TTM_PL_FLAG_VRAM);
diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c
new file mode 100644
index 0000000..ed6b846
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_prime.c
@@ -0,0 +1,163 @@
+
+#include "drmP.h"
+#include "drm.h"
+
+#include "nouveau_drv.h"
+#include "nouveau_drm.h"
+#include "nouveau_dma.h"
+
+#include <linux/dma-buf.h>
+
+static struct sg_table *nouveau_gem_map_dma_buf(struct dma_buf_attachment *attachment,
+ enum dma_data_direction dir)
+{
+ struct nouveau_bo *nvbo = attachment->dmabuf->priv;
+ struct drm_device *dev = nvbo->gem->dev;
+ int npages = nvbo->bo.num_pages;
+ struct sg_table *sg;
+ int nents;
+
+ mutex_lock(&dev->struct_mutex);
+ sg = drm_prime_pages_to_sg(nvbo->bo.ttm->pages, npages);
+ nents = dma_map_sg(attachment->dev, sg->sgl, sg->nents, dir);
+ mutex_unlock(&dev->struct_mutex);
+ return sg;
+}
+
+static void nouveau_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 nouveau_gem_dmabuf_release(struct dma_buf *dma_buf)
+{
+ struct nouveau_bo *nvbo = dma_buf->priv;
+
+ if (nvbo->gem->export_dma_buf == dma_buf) {
+ nvbo->gem->export_dma_buf = NULL;
+ drm_gem_object_unreference_unlocked(nvbo->gem);
+ }
+}
+
+static void *nouveau_gem_kmap_atomic(struct dma_buf *dma_buf, unsigned long page_num)
+{
+ return NULL;
+}
+
+static void nouveau_gem_kunmap_atomic(struct dma_buf *dma_buf, unsigned long page_num, void *addr)
+{
+
+}
+static void *nouveau_gem_kmap(struct dma_buf *dma_buf, unsigned long page_num)
+{
+ return NULL;
+}
+
+static void nouveau_gem_kunmap(struct dma_buf *dma_buf, unsigned long page_num, void *addr)
+{
+
+}
+
+struct dma_buf_ops nouveau_dmabuf_ops = {
+ .map_dma_buf = nouveau_gem_map_dma_buf,
+ .unmap_dma_buf = nouveau_gem_unmap_dma_buf,
+ .release = nouveau_gem_dmabuf_release,
+ .kmap = nouveau_gem_kmap,
+ .kmap_atomic = nouveau_gem_kmap_atomic,
+ .kunmap = nouveau_gem_kunmap,
+ .kunmap_atomic = nouveau_gem_kunmap_atomic,
+};
+
+static int
+nouveau_prime_new(struct drm_device *dev,
+ size_t size,
+ struct sg_table *sg,
+ struct nouveau_bo **pnvbo)
+{
+ 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, pnvbo);
+ if (ret)
+ return ret;
+ nvbo = *pnvbo;
+
+ /* we restrict allowed domains on nv50+ to only the types
+ * that were requested at creation time. not possibly on
+ * earlier chips without busting the ABI.
+ */
+ 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, pnvbo);
+ return -ENOMEM;
+ }
+
+ nvbo->gem->driver_private = nvbo;
+ return 0;
+}
+
+struct dma_buf *nouveau_gem_prime_export(struct drm_device *dev,
+ struct drm_gem_object *obj, int flags)
+{
+ 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 ERR_PTR(-EINVAL);
+
+ return dma_buf_export(nvbo, &nouveau_dmabuf_ops, obj->size, flags);
+}
+
+struct drm_gem_object *nouveau_gem_prime_import(struct drm_device *dev,
+ struct dma_buf *dma_buf)
+{
+ struct dma_buf_attachment *attach;
+ struct sg_table *sg;
+ struct nouveau_bo *nvbo;
+ int ret;
+
+ if (dma_buf->ops == &nouveau_dmabuf_ops) {
+ nvbo = dma_buf->priv;
+ if (nvbo->gem) {
+ if (nvbo->gem->dev == dev) {
+ drm_gem_object_reference(nvbo->gem);
+ return nvbo->gem;
+ }
+ }
+ }
+ /* need to attach */
+ attach = dma_buf_attach(dma_buf, dev->dev);
+ if (IS_ERR(attach))
+ return ERR_PTR(PTR_ERR(attach));
+
+ sg = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL);
+ if (IS_ERR(sg)) {
+ ret = PTR_ERR(sg);
+ goto fail_detach;
+ }
+
+ ret = nouveau_prime_new(dev, dma_buf->size, sg, &nvbo);
+ if (ret)
+ goto fail_unmap;
+
+ nvbo->gem->import_attach = attach;
+
+ return nvbo->gem;
+
+fail_unmap:
+ dma_buf_unmap_attachment(attach, sg, DMA_BIDIRECTIONAL);
+fail_detach:
+ dma_buf_detach(dma_buf, attach);
+ return ERR_PTR(ret);
+}
+
diff --git a/drivers/gpu/drm/nouveau/nouveau_sgdma.c b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
index 47f245e..27aac9a 100644
--- a/drivers/gpu/drm/nouveau/nouveau_sgdma.c
+++ b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
@@ -290,7 +290,10 @@ nv50_sgdma_bind(struct ttm_tt *ttm, struct ttm_mem_reg *mem)
struct nouveau_mem *node = mem->mm_node;
/* noop: bound in move_notify() */
- node->pages = nvbe->ttm.dma_address;
+ if (ttm->sg) {
+ node->sg = ttm->sg;
+ } else
+ node->pages = nvbe->ttm.dma_address;
return 0;
}
diff --git a/drivers/gpu/drm/nouveau/nouveau_vm.c b/drivers/gpu/drm/nouveau/nouveau_vm.c
index 2bf6c03..11edd5e 100644
--- a/drivers/gpu/drm/nouveau/nouveau_vm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_vm.c
@@ -77,6 +77,63 @@ nouveau_vm_map(struct nouveau_vma *vma, struct nouveau_mem *node)
}
void
+nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64 delta, u64 length,
+ struct nouveau_mem *mem)
+{
+ struct nouveau_vm *vm = vma->vm;
+ int big = vma->node->type != vm->spg_shift;
+ u32 offset = vma->node->offset + (delta >> 12);
+ u32 bits = vma->node->type - 12;
+ u32 num = length >> vma->node->type;
+ u32 pde = (offset >> vm->pgt_bits) - vm->fpde;
+ u32 pte = (offset & ((1 << vm->pgt_bits) - 1)) >> bits;
+ u32 max = 1 << (vm->pgt_bits - bits);
+ unsigned m, sglen;
+ u32 end, len;
+ int i;
+ struct scatterlist *sg;
+
+ for_each_sg(mem->sg->sgl, sg, mem->sg->nents, i) {
+ struct nouveau_gpuobj *pgt = vm->pgt[pde].obj[big];
+ sglen = sg_dma_len(sg) >> PAGE_SHIFT;
+
+ end = pte + sglen;
+ if (unlikely(end >= max))
+ end = max;
+ len = end - pte;
+
+ for (m = 0; m < len; m++) {
+ dma_addr_t addr = sg_dma_address(sg) + (m << PAGE_SHIFT);
+
+ vm->map_sg(vma, pgt, mem, pte, 1, &addr);
+ num--;
+ pte++;
+
+ if (num == 0)
+ goto finish;
+ }
+ if (unlikely(end >= max)) {
+ pde++;
+ pte = 0;
+ }
+ if (m < sglen) {
+ for (; m < sglen; m++) {
+ dma_addr_t addr = sg_dma_address(sg) + (m << PAGE_SHIFT);
+
+ vm->map_sg(vma, pgt, mem, pte, 1, &addr);
+ num--;
+ pte++;
+ if (num == 0)
+ goto finish;
+ }
+ }
+
+ }
+finish:
+ vm->flush(vm);
+}
+
+void
nouveau_vm_map_sg(struct nouveau_vma *vma, u64 delta, u64 length,
struct nouveau_mem *mem)
{
diff --git a/drivers/gpu/drm/nouveau/nouveau_vm.h b/drivers/gpu/drm/nouveau/nouveau_vm.h
index 4fb6e72..a8246e7 100644
--- a/drivers/gpu/drm/nouveau/nouveau_vm.h
+++ b/drivers/gpu/drm/nouveau/nouveau_vm.h
@@ -72,6 +72,9 @@ struct nouveau_vm {
u64 phys, u64 delta);
void (*map_sg)(struct nouveau_vma *, struct nouveau_gpuobj *,
struct nouveau_mem *, u32 pte, u32 cnt, dma_addr_t *);
+
+ void (*map_sg_table)(struct nouveau_vma *, struct nouveau_gpuobj *,
+ struct nouveau_mem *, u32 pte, u32 cnt, dma_addr_t *);
void (*unmap)(struct nouveau_gpuobj *pgt, u32 pte, u32 cnt);
void (*flush)(struct nouveau_vm *);
};
@@ -90,7 +93,8 @@ void nouveau_vm_unmap(struct nouveau_vma *);
void nouveau_vm_unmap_at(struct nouveau_vma *, u64 offset, u64 length);
void nouveau_vm_map_sg(struct nouveau_vma *, u64 offset, u64 length,
struct nouveau_mem *);
-
+void nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64 delta, u64 length,
+ struct nouveau_mem *mem);
/* nv50_vm.c */
void nv50_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 pde,
struct nouveau_gpuobj *pgt[2]);
diff --git a/drivers/gpu/drm/nouveau/nv04_crtc.c b/drivers/gpu/drm/nouveau/nv04_crtc.c
index 728d075..4c31c63 100644
--- a/drivers/gpu/drm/nouveau/nv04_crtc.c
+++ b/drivers/gpu/drm/nouveau/nv04_crtc.c
@@ -1047,7 +1047,7 @@ nv04_crtc_create(struct drm_device *dev, int crtc_num)
drm_mode_crtc_set_gamma_size(&nv_crtc->base, 256);
ret = nouveau_bo_new(dev, 64*64*4, 0x100, TTM_PL_FLAG_VRAM,
- 0, 0x0000, &nv_crtc->cursor.nvbo);
+ 0, 0x0000, NULL, &nv_crtc->cursor.nvbo);
if (!ret) {
ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM);
if (!ret)
diff --git a/drivers/gpu/drm/nouveau/nv50_crtc.c b/drivers/gpu/drm/nouveau/nv50_crtc.c
index 701b927..cad2abd 100644
--- a/drivers/gpu/drm/nouveau/nv50_crtc.c
+++ b/drivers/gpu/drm/nouveau/nv50_crtc.c
@@ -769,7 +769,7 @@ nv50_crtc_create(struct drm_device *dev, int index)
nv_crtc->lut.depth = 0;
ret = nouveau_bo_new(dev, 4096, 0x100, TTM_PL_FLAG_VRAM,
- 0, 0x0000, &nv_crtc->lut.nvbo);
+ 0, 0x0000, NULL, &nv_crtc->lut.nvbo);
if (!ret) {
ret = nouveau_bo_pin(nv_crtc->lut.nvbo, TTM_PL_FLAG_VRAM);
if (!ret)
@@ -795,7 +795,7 @@ nv50_crtc_create(struct drm_device *dev, int index)
drm_mode_crtc_set_gamma_size(&nv_crtc->base, 256);
ret = nouveau_bo_new(dev, 64*64*4, 0x100, TTM_PL_FLAG_VRAM,
- 0, 0x0000, &nv_crtc->cursor.nvbo);
+ 0, 0x0000, NULL, &nv_crtc->cursor.nvbo);
if (!ret) {
ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM);
if (!ret)
diff --git a/drivers/gpu/drm/nouveau/nv50_evo.c b/drivers/gpu/drm/nouveau/nv50_evo.c
index 9b962e9..ddcd555 100644
--- a/drivers/gpu/drm/nouveau/nv50_evo.c
+++ b/drivers/gpu/drm/nouveau/nv50_evo.c
@@ -117,7 +117,7 @@ nv50_evo_channel_new(struct drm_device *dev, int chid,
evo->user_get = 4;
evo->user_put = 0;
- ret = nouveau_bo_new(dev, 4096, 0, TTM_PL_FLAG_VRAM, 0, 0,
+ ret = nouveau_bo_new(dev, 4096, 0, TTM_PL_FLAG_VRAM, 0, 0, NULL,
&evo->pushbuf_bo);
if (ret == 0)
ret = nouveau_bo_pin(evo->pushbuf_bo, TTM_PL_FLAG_VRAM);
@@ -333,7 +333,7 @@ nv50_evo_create(struct drm_device *dev)
goto err;
ret = nouveau_bo_new(dev, 4096, 0x1000, TTM_PL_FLAG_VRAM,
- 0, 0x0000, &dispc->sem.bo);
+ 0, 0x0000, NULL, &dispc->sem.bo);
if (!ret) {
ret = nouveau_bo_pin(dispc->sem.bo, TTM_PL_FLAG_VRAM);
if (!ret)
diff --git a/drivers/gpu/drm/nouveau/nvd0_display.c b/drivers/gpu/drm/nouveau/nvd0_display.c
index 0247250..1f3a9b1 100644
--- a/drivers/gpu/drm/nouveau/nvd0_display.c
+++ b/drivers/gpu/drm/nouveau/nvd0_display.c
@@ -882,7 +882,7 @@ nvd0_crtc_create(struct drm_device *dev, int index)
drm_mode_crtc_set_gamma_size(crtc, 256);
ret = nouveau_bo_new(dev, 64 * 64 * 4, 0x100, TTM_PL_FLAG_VRAM,
- 0, 0x0000, &nv_crtc->cursor.nvbo);
+ 0, 0x0000, NULL, &nv_crtc->cursor.nvbo);
if (!ret) {
ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM);
if (!ret)
@@ -895,7 +895,7 @@ nvd0_crtc_create(struct drm_device *dev, int index)
goto out;
ret = nouveau_bo_new(dev, 8192, 0x100, TTM_PL_FLAG_VRAM,
- 0, 0x0000, &nv_crtc->lut.nvbo);
+ 0, 0x0000, NULL, &nv_crtc->lut.nvbo);
if (!ret) {
ret = nouveau_bo_pin(nv_crtc->lut.nvbo, TTM_PL_FLAG_VRAM);
if (!ret)
@@ -2030,7 +2030,7 @@ nvd0_display_create(struct drm_device *dev)
/* small shared memory area we use for notifiers and semaphores */
ret = nouveau_bo_new(dev, 4096, 0x1000, TTM_PL_FLAG_VRAM,
- 0, 0x0000, &disp->sync);
+ 0, 0x0000, NULL, &disp->sync);
if (!ret) {
ret = nouveau_bo_pin(disp->sync, TTM_PL_FLAG_VRAM);
if (!ret)
--
1.7.6
^ permalink raw reply related [flat|nested] 15+ messages in thread* Re: [PATCH 5/7] nouveau: add PRIME support
2012-05-22 12:50 ` [PATCH 5/7] nouveau: add PRIME support Dave Airlie
@ 2012-05-22 21:13 ` Alex Deucher
0 siblings, 0 replies; 15+ messages in thread
From: Alex Deucher @ 2012-05-22 21:13 UTC (permalink / raw)
To: Dave Airlie; +Cc: dri-devel
On Tue, May 22, 2012 at 8:50 AM, Dave Airlie <airlied@gmail.com> wrote:
> From: Dave Airlie <airlied@redhat.com>
>
> This adds prime->fd and fd->prime support to nouveau,
> it passes the SG object to TTM, and then populates the
> GART entries using it.
>
> v2: add stubbed kmap + use new function to fill out pages array
> for faulting + add reimport test.
>
> Signed-off-by: Dave Airlie <airlied@redhat.com>
Once again, not familair with nv gart, but the code is pretty much the
same as other asics...
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
> ---
> drivers/gpu/drm/nouveau/Makefile | 2 +-
> drivers/gpu/drm/nouveau/nouveau_bo.c | 42 ++++++--
> drivers/gpu/drm/nouveau/nouveau_channel.c | 2 +-
> drivers/gpu/drm/nouveau/nouveau_drv.c | 8 ++-
> drivers/gpu/drm/nouveau/nouveau_drv.h | 10 ++-
> drivers/gpu/drm/nouveau/nouveau_fence.c | 2 +-
> drivers/gpu/drm/nouveau/nouveau_gem.c | 6 +-
> drivers/gpu/drm/nouveau/nouveau_mem.c | 2 +-
> drivers/gpu/drm/nouveau/nouveau_prime.c | 163 +++++++++++++++++++++++++++++
> drivers/gpu/drm/nouveau/nouveau_sgdma.c | 5 +-
> drivers/gpu/drm/nouveau/nouveau_vm.c | 57 ++++++++++
> drivers/gpu/drm/nouveau/nouveau_vm.h | 6 +-
> drivers/gpu/drm/nouveau/nv04_crtc.c | 2 +-
> drivers/gpu/drm/nouveau/nv50_crtc.c | 4 +-
> drivers/gpu/drm/nouveau/nv50_evo.c | 4 +-
> drivers/gpu/drm/nouveau/nvd0_display.c | 6 +-
> 16 files changed, 296 insertions(+), 25 deletions(-)
> create mode 100644 drivers/gpu/drm/nouveau/nouveau_prime.c
>
> diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile
> index 1a2ad7e..01f1335 100644
> --- a/drivers/gpu/drm/nouveau/Makefile
> +++ b/drivers/gpu/drm/nouveau/Makefile
> @@ -37,7 +37,7 @@ nouveau-y := nouveau_drv.o nouveau_state.o nouveau_channel.o nouveau_mem.o \
> nv50_calc.o \
> nv04_pm.o nv40_pm.o nv50_pm.o nva3_pm.o nvc0_pm.o \
> nv50_vram.o nvc0_vram.o \
> - nv50_vm.o nvc0_vm.o
> + nv50_vm.o nvc0_vm.o nouveau_prime.o
>
> nouveau-$(CONFIG_DRM_NOUVEAU_DEBUG) += nouveau_debugfs.o
> nouveau-$(CONFIG_COMPAT) += nouveau_ioc32.o
> diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
> index 81599d6..4435e11 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_bo.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
> @@ -89,12 +89,17 @@ nouveau_bo_fixup_align(struct nouveau_bo *nvbo, u32 flags,
> int
> nouveau_bo_new(struct drm_device *dev, int size, int align,
> uint32_t flags, uint32_t tile_mode, uint32_t tile_flags,
> + struct sg_table *sg,
> struct nouveau_bo **pnvbo)
> {
> struct drm_nouveau_private *dev_priv = dev->dev_private;
> struct nouveau_bo *nvbo;
> size_t acc_size;
> int ret;
> + int type = ttm_bo_type_device;
> +
> + if (sg)
> + type = ttm_bo_type_sg;
>
> nvbo = kzalloc(sizeof(struct nouveau_bo), GFP_KERNEL);
> if (!nvbo)
> @@ -120,8 +125,8 @@ nouveau_bo_new(struct drm_device *dev, int size, int align,
> sizeof(struct nouveau_bo));
>
> ret = ttm_bo_init(&dev_priv->ttm.bdev, &nvbo->bo, size,
> - ttm_bo_type_device, &nvbo->placement,
> - align >> PAGE_SHIFT, 0, false, NULL, acc_size, NULL,
> + type, &nvbo->placement,
> + align >> PAGE_SHIFT, 0, false, NULL, acc_size, sg,
> nouveau_bo_del_ttm);
> if (ret) {
> /* ttm will call nouveau_bo_del_ttm if it fails.. */
> @@ -817,9 +822,14 @@ nouveau_bo_move_ntfy(struct ttm_buffer_object *bo, struct ttm_mem_reg *new_mem)
> } else
> if (new_mem && new_mem->mem_type == TTM_PL_TT &&
> nvbo->page_shift == vma->vm->spg_shift) {
> - nouveau_vm_map_sg(vma, 0, new_mem->
> - num_pages << PAGE_SHIFT,
> - new_mem->mm_node);
> + if (((struct nouveau_mem *)new_mem->mm_node)->sg)
> + nouveau_vm_map_sg_table(vma, 0, new_mem->
> + num_pages << PAGE_SHIFT,
> + new_mem->mm_node);
> + else
> + nouveau_vm_map_sg(vma, 0, new_mem->
> + num_pages << PAGE_SHIFT,
> + new_mem->mm_node);
> } else {
> nouveau_vm_unmap(vma);
> }
> @@ -1058,10 +1068,19 @@ nouveau_ttm_tt_populate(struct ttm_tt *ttm)
> struct drm_device *dev;
> unsigned i;
> int r;
> + bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
>
> if (ttm->state != tt_unpopulated)
> return 0;
>
> + if (slave && ttm->sg) {
> + /* make userspace faulting work */
> + drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages,
> + ttm_dma->dma_address, ttm->num_pages);
> + ttm->state = tt_unbound;
> + return 0;
> + }
> +
> dev_priv = nouveau_bdev(ttm->bdev);
> dev = dev_priv->dev;
>
> @@ -1106,6 +1125,10 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm)
> struct drm_nouveau_private *dev_priv;
> struct drm_device *dev;
> unsigned i;
> + bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
> +
> + if (slave)
> + return;
>
> dev_priv = nouveau_bdev(ttm->bdev);
> dev = dev_priv->dev;
> @@ -1181,9 +1204,12 @@ nouveau_bo_vma_add(struct nouveau_bo *nvbo, struct nouveau_vm *vm,
>
> if (nvbo->bo.mem.mem_type == TTM_PL_VRAM)
> nouveau_vm_map(vma, nvbo->bo.mem.mm_node);
> - else
> - if (nvbo->bo.mem.mem_type == TTM_PL_TT)
> - nouveau_vm_map_sg(vma, 0, size, node);
> + else if (nvbo->bo.mem.mem_type == TTM_PL_TT) {
> + if (node->sg)
> + nouveau_vm_map_sg_table(vma, 0, size, node);
> + else
> + nouveau_vm_map_sg(vma, 0, size, node);
> + }
>
> list_add_tail(&vma->head, &nvbo->vma_list);
> vma->refcount = 1;
> diff --git a/drivers/gpu/drm/nouveau/nouveau_channel.c b/drivers/gpu/drm/nouveau/nouveau_channel.c
> index 846afb0..730bbb2 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_channel.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_channel.c
> @@ -38,7 +38,7 @@ nouveau_channel_pushbuf_init(struct nouveau_channel *chan)
> int ret;
>
> /* allocate buffer object */
> - ret = nouveau_bo_new(dev, 65536, 0, mem, 0, 0, &chan->pushbuf_bo);
> + ret = nouveau_bo_new(dev, 65536, 0, mem, 0, 0, NULL, &chan->pushbuf_bo);
> if (ret)
> goto out;
>
> diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.c b/drivers/gpu/drm/nouveau/nouveau_drv.c
> index 4f2030b..b394ecf 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_drv.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_drv.c
> @@ -408,7 +408,7 @@ static struct drm_driver driver = {
> .driver_features =
> DRIVER_USE_AGP | DRIVER_PCI_DMA | DRIVER_SG |
> DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM |
> - DRIVER_MODESET,
> + DRIVER_MODESET | DRIVER_PRIME,
> .load = nouveau_load,
> .firstopen = nouveau_firstopen,
> .lastclose = nouveau_lastclose,
> @@ -430,6 +430,12 @@ static struct drm_driver driver = {
> .reclaim_buffers = drm_core_reclaim_buffers,
> .ioctls = nouveau_ioctls,
> .fops = &nouveau_driver_fops,
> +
> + .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
> + .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
> + .gem_prime_export = nouveau_gem_prime_export,
> + .gem_prime_import = nouveau_gem_prime_import,
> +
> .gem_init_object = nouveau_gem_object_new,
> .gem_free_object = nouveau_gem_object_del,
> .gem_open_object = nouveau_gem_object_open,
> diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
> index 3aef353..92c9a8a 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_drv.h
> +++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
> @@ -86,6 +86,7 @@ struct nouveau_mem {
> u32 memtype;
> u64 offset;
> u64 size;
> + struct sg_table *sg;
> };
>
> struct nouveau_tile_reg {
> @@ -1416,7 +1417,9 @@ extern int nv04_crtc_create(struct drm_device *, int index);
> extern struct ttm_bo_driver nouveau_bo_driver;
> extern int nouveau_bo_new(struct drm_device *, int size, int align,
> uint32_t flags, uint32_t tile_mode,
> - uint32_t tile_flags, struct nouveau_bo **);
> + uint32_t tile_flags,
> + struct sg_table *sg,
> + struct nouveau_bo **);
> extern int nouveau_bo_pin(struct nouveau_bo *, uint32_t flags);
> extern int nouveau_bo_unpin(struct nouveau_bo *);
> extern int nouveau_bo_map(struct nouveau_bo *);
> @@ -1501,6 +1504,11 @@ extern int nouveau_gem_ioctl_cpu_fini(struct drm_device *, void *,
> extern int nouveau_gem_ioctl_info(struct drm_device *, void *,
> struct drm_file *);
>
> +extern struct dma_buf *nouveau_gem_prime_export(struct drm_device *dev,
> + struct drm_gem_object *obj, int flags);
> +extern struct drm_gem_object *nouveau_gem_prime_import(struct drm_device *dev,
> + struct dma_buf *dma_buf);
> +
> /* nouveau_display.c */
> int nouveau_display_create(struct drm_device *dev);
> void nouveau_display_destroy(struct drm_device *dev);
> diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c
> index c1dc20f..965e3d2 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_fence.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_fence.c
> @@ -573,7 +573,7 @@ nouveau_fence_init(struct drm_device *dev)
> /* Create a shared VRAM heap for cross-channel sync. */
> if (USE_SEMA(dev)) {
> ret = nouveau_bo_new(dev, size, 0, TTM_PL_FLAG_VRAM,
> - 0, 0, &dev_priv->fence.bo);
> + 0, 0, NULL, &dev_priv->fence.bo);
> if (ret)
> return ret;
>
> diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
> index ed52a6f..666dad0 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_gem.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
> @@ -23,6 +23,7 @@
> * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
> *
> */
> +#include <linux/dma-buf.h>
> #include "drmP.h"
> #include "drm.h"
>
> @@ -53,6 +54,9 @@ nouveau_gem_object_del(struct drm_gem_object *gem)
> nouveau_bo_unpin(nvbo);
> }
>
> + if (gem->import_attach)
> + drm_prime_gem_destroy(gem, nvbo->bo.sg);
> +
> ttm_bo_unref(&bo);
>
> drm_gem_object_release(gem);
> @@ -139,7 +143,7 @@ nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
> flags |= TTM_PL_FLAG_SYSTEM;
>
> ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
> - tile_flags, pnvbo);
> + tile_flags, NULL, pnvbo);
> if (ret)
> return ret;
> nvbo = *pnvbo;
> diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c
> index b08065f..bb2f0a4 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_mem.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_mem.c
> @@ -416,7 +416,7 @@ nouveau_mem_vram_init(struct drm_device *dev)
>
> if (dev_priv->card_type < NV_50) {
> ret = nouveau_bo_new(dev, 256*1024, 0, TTM_PL_FLAG_VRAM,
> - 0, 0, &dev_priv->vga_ram);
> + 0, 0, NULL, &dev_priv->vga_ram);
> if (ret == 0)
> ret = nouveau_bo_pin(dev_priv->vga_ram,
> TTM_PL_FLAG_VRAM);
> diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c
> new file mode 100644
> index 0000000..ed6b846
> --- /dev/null
> +++ b/drivers/gpu/drm/nouveau/nouveau_prime.c
> @@ -0,0 +1,163 @@
> +
> +#include "drmP.h"
> +#include "drm.h"
> +
> +#include "nouveau_drv.h"
> +#include "nouveau_drm.h"
> +#include "nouveau_dma.h"
> +
> +#include <linux/dma-buf.h>
> +
> +static struct sg_table *nouveau_gem_map_dma_buf(struct dma_buf_attachment *attachment,
> + enum dma_data_direction dir)
> +{
> + struct nouveau_bo *nvbo = attachment->dmabuf->priv;
> + struct drm_device *dev = nvbo->gem->dev;
> + int npages = nvbo->bo.num_pages;
> + struct sg_table *sg;
> + int nents;
> +
> + mutex_lock(&dev->struct_mutex);
> + sg = drm_prime_pages_to_sg(nvbo->bo.ttm->pages, npages);
> + nents = dma_map_sg(attachment->dev, sg->sgl, sg->nents, dir);
> + mutex_unlock(&dev->struct_mutex);
> + return sg;
> +}
> +
> +static void nouveau_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 nouveau_gem_dmabuf_release(struct dma_buf *dma_buf)
> +{
> + struct nouveau_bo *nvbo = dma_buf->priv;
> +
> + if (nvbo->gem->export_dma_buf == dma_buf) {
> + nvbo->gem->export_dma_buf = NULL;
> + drm_gem_object_unreference_unlocked(nvbo->gem);
> + }
> +}
> +
> +static void *nouveau_gem_kmap_atomic(struct dma_buf *dma_buf, unsigned long page_num)
> +{
> + return NULL;
> +}
> +
> +static void nouveau_gem_kunmap_atomic(struct dma_buf *dma_buf, unsigned long page_num, void *addr)
> +{
> +
> +}
> +static void *nouveau_gem_kmap(struct dma_buf *dma_buf, unsigned long page_num)
> +{
> + return NULL;
> +}
> +
> +static void nouveau_gem_kunmap(struct dma_buf *dma_buf, unsigned long page_num, void *addr)
> +{
> +
> +}
> +
> +struct dma_buf_ops nouveau_dmabuf_ops = {
> + .map_dma_buf = nouveau_gem_map_dma_buf,
> + .unmap_dma_buf = nouveau_gem_unmap_dma_buf,
> + .release = nouveau_gem_dmabuf_release,
> + .kmap = nouveau_gem_kmap,
> + .kmap_atomic = nouveau_gem_kmap_atomic,
> + .kunmap = nouveau_gem_kunmap,
> + .kunmap_atomic = nouveau_gem_kunmap_atomic,
> +};
> +
> +static int
> +nouveau_prime_new(struct drm_device *dev,
> + size_t size,
> + struct sg_table *sg,
> + struct nouveau_bo **pnvbo)
> +{
> + 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, pnvbo);
> + if (ret)
> + return ret;
> + nvbo = *pnvbo;
> +
> + /* we restrict allowed domains on nv50+ to only the types
> + * that were requested at creation time. not possibly on
> + * earlier chips without busting the ABI.
> + */
> + 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, pnvbo);
> + return -ENOMEM;
> + }
> +
> + nvbo->gem->driver_private = nvbo;
> + return 0;
> +}
> +
> +struct dma_buf *nouveau_gem_prime_export(struct drm_device *dev,
> + struct drm_gem_object *obj, int flags)
> +{
> + 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 ERR_PTR(-EINVAL);
> +
> + return dma_buf_export(nvbo, &nouveau_dmabuf_ops, obj->size, flags);
> +}
> +
> +struct drm_gem_object *nouveau_gem_prime_import(struct drm_device *dev,
> + struct dma_buf *dma_buf)
> +{
> + struct dma_buf_attachment *attach;
> + struct sg_table *sg;
> + struct nouveau_bo *nvbo;
> + int ret;
> +
> + if (dma_buf->ops == &nouveau_dmabuf_ops) {
> + nvbo = dma_buf->priv;
> + if (nvbo->gem) {
> + if (nvbo->gem->dev == dev) {
> + drm_gem_object_reference(nvbo->gem);
> + return nvbo->gem;
> + }
> + }
> + }
> + /* need to attach */
> + attach = dma_buf_attach(dma_buf, dev->dev);
> + if (IS_ERR(attach))
> + return ERR_PTR(PTR_ERR(attach));
> +
> + sg = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL);
> + if (IS_ERR(sg)) {
> + ret = PTR_ERR(sg);
> + goto fail_detach;
> + }
> +
> + ret = nouveau_prime_new(dev, dma_buf->size, sg, &nvbo);
> + if (ret)
> + goto fail_unmap;
> +
> + nvbo->gem->import_attach = attach;
> +
> + return nvbo->gem;
> +
> +fail_unmap:
> + dma_buf_unmap_attachment(attach, sg, DMA_BIDIRECTIONAL);
> +fail_detach:
> + dma_buf_detach(dma_buf, attach);
> + return ERR_PTR(ret);
> +}
> +
> diff --git a/drivers/gpu/drm/nouveau/nouveau_sgdma.c b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
> index 47f245e..27aac9a 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_sgdma.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
> @@ -290,7 +290,10 @@ nv50_sgdma_bind(struct ttm_tt *ttm, struct ttm_mem_reg *mem)
> struct nouveau_mem *node = mem->mm_node;
>
> /* noop: bound in move_notify() */
> - node->pages = nvbe->ttm.dma_address;
> + if (ttm->sg) {
> + node->sg = ttm->sg;
> + } else
> + node->pages = nvbe->ttm.dma_address;
> return 0;
> }
>
> diff --git a/drivers/gpu/drm/nouveau/nouveau_vm.c b/drivers/gpu/drm/nouveau/nouveau_vm.c
> index 2bf6c03..11edd5e 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_vm.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_vm.c
> @@ -77,6 +77,63 @@ nouveau_vm_map(struct nouveau_vma *vma, struct nouveau_mem *node)
> }
>
> void
> +nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64 delta, u64 length,
> + struct nouveau_mem *mem)
> +{
> + struct nouveau_vm *vm = vma->vm;
> + int big = vma->node->type != vm->spg_shift;
> + u32 offset = vma->node->offset + (delta >> 12);
> + u32 bits = vma->node->type - 12;
> + u32 num = length >> vma->node->type;
> + u32 pde = (offset >> vm->pgt_bits) - vm->fpde;
> + u32 pte = (offset & ((1 << vm->pgt_bits) - 1)) >> bits;
> + u32 max = 1 << (vm->pgt_bits - bits);
> + unsigned m, sglen;
> + u32 end, len;
> + int i;
> + struct scatterlist *sg;
> +
> + for_each_sg(mem->sg->sgl, sg, mem->sg->nents, i) {
> + struct nouveau_gpuobj *pgt = vm->pgt[pde].obj[big];
> + sglen = sg_dma_len(sg) >> PAGE_SHIFT;
> +
> + end = pte + sglen;
> + if (unlikely(end >= max))
> + end = max;
> + len = end - pte;
> +
> + for (m = 0; m < len; m++) {
> + dma_addr_t addr = sg_dma_address(sg) + (m << PAGE_SHIFT);
> +
> + vm->map_sg(vma, pgt, mem, pte, 1, &addr);
> + num--;
> + pte++;
> +
> + if (num == 0)
> + goto finish;
> + }
> + if (unlikely(end >= max)) {
> + pde++;
> + pte = 0;
> + }
> + if (m < sglen) {
> + for (; m < sglen; m++) {
> + dma_addr_t addr = sg_dma_address(sg) + (m << PAGE_SHIFT);
> +
> + vm->map_sg(vma, pgt, mem, pte, 1, &addr);
> + num--;
> + pte++;
> + if (num == 0)
> + goto finish;
> + }
> + }
> +
> + }
> +finish:
> + vm->flush(vm);
> +}
> +
> +void
> nouveau_vm_map_sg(struct nouveau_vma *vma, u64 delta, u64 length,
> struct nouveau_mem *mem)
> {
> diff --git a/drivers/gpu/drm/nouveau/nouveau_vm.h b/drivers/gpu/drm/nouveau/nouveau_vm.h
> index 4fb6e72..a8246e7 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_vm.h
> +++ b/drivers/gpu/drm/nouveau/nouveau_vm.h
> @@ -72,6 +72,9 @@ struct nouveau_vm {
> u64 phys, u64 delta);
> void (*map_sg)(struct nouveau_vma *, struct nouveau_gpuobj *,
> struct nouveau_mem *, u32 pte, u32 cnt, dma_addr_t *);
> +
> + void (*map_sg_table)(struct nouveau_vma *, struct nouveau_gpuobj *,
> + struct nouveau_mem *, u32 pte, u32 cnt, dma_addr_t *);
> void (*unmap)(struct nouveau_gpuobj *pgt, u32 pte, u32 cnt);
> void (*flush)(struct nouveau_vm *);
> };
> @@ -90,7 +93,8 @@ void nouveau_vm_unmap(struct nouveau_vma *);
> void nouveau_vm_unmap_at(struct nouveau_vma *, u64 offset, u64 length);
> void nouveau_vm_map_sg(struct nouveau_vma *, u64 offset, u64 length,
> struct nouveau_mem *);
> -
> +void nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64 delta, u64 length,
> + struct nouveau_mem *mem);
> /* nv50_vm.c */
> void nv50_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 pde,
> struct nouveau_gpuobj *pgt[2]);
> diff --git a/drivers/gpu/drm/nouveau/nv04_crtc.c b/drivers/gpu/drm/nouveau/nv04_crtc.c
> index 728d075..4c31c63 100644
> --- a/drivers/gpu/drm/nouveau/nv04_crtc.c
> +++ b/drivers/gpu/drm/nouveau/nv04_crtc.c
> @@ -1047,7 +1047,7 @@ nv04_crtc_create(struct drm_device *dev, int crtc_num)
> drm_mode_crtc_set_gamma_size(&nv_crtc->base, 256);
>
> ret = nouveau_bo_new(dev, 64*64*4, 0x100, TTM_PL_FLAG_VRAM,
> - 0, 0x0000, &nv_crtc->cursor.nvbo);
> + 0, 0x0000, NULL, &nv_crtc->cursor.nvbo);
> if (!ret) {
> ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM);
> if (!ret)
> diff --git a/drivers/gpu/drm/nouveau/nv50_crtc.c b/drivers/gpu/drm/nouveau/nv50_crtc.c
> index 701b927..cad2abd 100644
> --- a/drivers/gpu/drm/nouveau/nv50_crtc.c
> +++ b/drivers/gpu/drm/nouveau/nv50_crtc.c
> @@ -769,7 +769,7 @@ nv50_crtc_create(struct drm_device *dev, int index)
> nv_crtc->lut.depth = 0;
>
> ret = nouveau_bo_new(dev, 4096, 0x100, TTM_PL_FLAG_VRAM,
> - 0, 0x0000, &nv_crtc->lut.nvbo);
> + 0, 0x0000, NULL, &nv_crtc->lut.nvbo);
> if (!ret) {
> ret = nouveau_bo_pin(nv_crtc->lut.nvbo, TTM_PL_FLAG_VRAM);
> if (!ret)
> @@ -795,7 +795,7 @@ nv50_crtc_create(struct drm_device *dev, int index)
> drm_mode_crtc_set_gamma_size(&nv_crtc->base, 256);
>
> ret = nouveau_bo_new(dev, 64*64*4, 0x100, TTM_PL_FLAG_VRAM,
> - 0, 0x0000, &nv_crtc->cursor.nvbo);
> + 0, 0x0000, NULL, &nv_crtc->cursor.nvbo);
> if (!ret) {
> ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM);
> if (!ret)
> diff --git a/drivers/gpu/drm/nouveau/nv50_evo.c b/drivers/gpu/drm/nouveau/nv50_evo.c
> index 9b962e9..ddcd555 100644
> --- a/drivers/gpu/drm/nouveau/nv50_evo.c
> +++ b/drivers/gpu/drm/nouveau/nv50_evo.c
> @@ -117,7 +117,7 @@ nv50_evo_channel_new(struct drm_device *dev, int chid,
> evo->user_get = 4;
> evo->user_put = 0;
>
> - ret = nouveau_bo_new(dev, 4096, 0, TTM_PL_FLAG_VRAM, 0, 0,
> + ret = nouveau_bo_new(dev, 4096, 0, TTM_PL_FLAG_VRAM, 0, 0, NULL,
> &evo->pushbuf_bo);
> if (ret == 0)
> ret = nouveau_bo_pin(evo->pushbuf_bo, TTM_PL_FLAG_VRAM);
> @@ -333,7 +333,7 @@ nv50_evo_create(struct drm_device *dev)
> goto err;
>
> ret = nouveau_bo_new(dev, 4096, 0x1000, TTM_PL_FLAG_VRAM,
> - 0, 0x0000, &dispc->sem.bo);
> + 0, 0x0000, NULL, &dispc->sem.bo);
> if (!ret) {
> ret = nouveau_bo_pin(dispc->sem.bo, TTM_PL_FLAG_VRAM);
> if (!ret)
> diff --git a/drivers/gpu/drm/nouveau/nvd0_display.c b/drivers/gpu/drm/nouveau/nvd0_display.c
> index 0247250..1f3a9b1 100644
> --- a/drivers/gpu/drm/nouveau/nvd0_display.c
> +++ b/drivers/gpu/drm/nouveau/nvd0_display.c
> @@ -882,7 +882,7 @@ nvd0_crtc_create(struct drm_device *dev, int index)
> drm_mode_crtc_set_gamma_size(crtc, 256);
>
> ret = nouveau_bo_new(dev, 64 * 64 * 4, 0x100, TTM_PL_FLAG_VRAM,
> - 0, 0x0000, &nv_crtc->cursor.nvbo);
> + 0, 0x0000, NULL, &nv_crtc->cursor.nvbo);
> if (!ret) {
> ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM);
> if (!ret)
> @@ -895,7 +895,7 @@ nvd0_crtc_create(struct drm_device *dev, int index)
> goto out;
>
> ret = nouveau_bo_new(dev, 8192, 0x100, TTM_PL_FLAG_VRAM,
> - 0, 0x0000, &nv_crtc->lut.nvbo);
> + 0, 0x0000, NULL, &nv_crtc->lut.nvbo);
> if (!ret) {
> ret = nouveau_bo_pin(nv_crtc->lut.nvbo, TTM_PL_FLAG_VRAM);
> if (!ret)
> @@ -2030,7 +2030,7 @@ nvd0_display_create(struct drm_device *dev)
>
> /* small shared memory area we use for notifiers and semaphores */
> ret = nouveau_bo_new(dev, 4096, 0x1000, TTM_PL_FLAG_VRAM,
> - 0, 0x0000, &disp->sync);
> + 0, 0x0000, NULL, &disp->sync);
> if (!ret) {
> ret = nouveau_bo_pin(disp->sync, TTM_PL_FLAG_VRAM);
> if (!ret)
> --
> 1.7.6
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 15+ messages in thread
* [PATCH 6/7] i915: add dmabuf/prime buffer sharing support.
2012-05-22 12:49 [PATCH 1/7] drm/prime: introduce sg->pages/addr arrays helper Dave Airlie
` (3 preceding siblings ...)
2012-05-22 12:50 ` [PATCH 5/7] nouveau: add PRIME support Dave Airlie
@ 2012-05-22 12:50 ` Dave Airlie
2012-05-22 13:28 ` Chris Wilson
2012-05-22 12:50 ` [PATCH 7/7] drm/radeon: add PRIME support (v2) Dave Airlie
2012-05-22 21:08 ` [PATCH 1/7] drm/prime: introduce sg->pages/addr arrays helper Alex Deucher
6 siblings, 1 reply; 15+ messages in thread
From: Dave Airlie @ 2012-05-22 12:50 UTC (permalink / raw)
To: dri-devel
From: Daniel Vetter <daniel.vetter@ffwll.ch>
This adds handle->fd and fd->handle support to i915, this is to allow
for offloading of rendering in one direction and outputs in the other.
v2 from Daniel Vetter:
- fixup conflicts with the prepare/finish gtt prep work.
- implement ppgtt binding support.
Note that we have squat i-g-t testcoverage for any of the lifetime and
access rules dma_buf/prime support brings along. And there are quite a
few intricate situations here.
Also note that the integration with the existing code is a bit
hackish, especially around get_gtt_pages and put_gtt_pages. It imo
would be easier with the prep code from Chris Wilson's unbound series,
but that is for 3.6.
Also note that I didn't bother to put the new prepare/finish gtt hooks
to good use by moving the dma_buf_map/unmap_attachment calls in there
(like we've originally planned for).
Last but not least this patch is only compile-tested, but I've changed
very little compared to Dave Airlie's version. So there's a decent
chance v2 on drm-next works as well as v1 on 3.4-rc.
v3: Right when I've hit sent I've noticed that I've screwed up one
obj->sg_list (for dmar support) and obj->sg_table (for prime support)
disdinction. We should be able to merge these 2 paths, but that's
material for another patch.
v4: fix the error reporting bugs pointed out by ickle.
v5: fix another error, and stop non-gtt mmaps on shared objects
stop pread/pwrite on imported objects, add fake kmap
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
drivers/gpu/drm/i915/Makefile | 3 +-
drivers/gpu/drm/i915/i915_drv.c | 8 ++-
drivers/gpu/drm/i915/i915_drv.h | 11 ++
drivers/gpu/drm/i915/i915_gem.c | 37 +++++++-
drivers/gpu/drm/i915/i915_gem_dmabuf.c | 171 ++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/i915_gem_gtt.c | 15 +++-
6 files changed, 239 insertions(+), 6 deletions(-)
create mode 100644 drivers/gpu/drm/i915/i915_gem_dmabuf.c
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 0ca7f76..2e9268d 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -38,7 +38,8 @@ i915-y := i915_drv.o i915_dma.o i915_irq.o \
dvo_ch7017.o \
dvo_ivch.o \
dvo_tfp410.o \
- dvo_sil164.o
+ dvo_sil164.o \
+ i915_gem_dmabuf.o
i915-$(CONFIG_COMPAT) += i915_ioc32.o
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 7b967d5..238a521 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1039,7 +1039,7 @@ static struct drm_driver driver = {
*/
.driver_features =
DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
- DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM,
+ DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME,
.load = i915_driver_load,
.unload = i915_driver_unload,
.open = i915_driver_open,
@@ -1062,6 +1062,12 @@ static struct drm_driver driver = {
.gem_init_object = i915_gem_init_object,
.gem_free_object = i915_gem_free_object,
.gem_vm_ops = &i915_gem_vm_ops,
+
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_export = i915_gem_prime_export,
+ .gem_prime_import = i915_gem_prime_import,
+
.dumb_create = i915_gem_dumb_create,
.dumb_map_offset = i915_gem_mmap_gtt,
.dumb_destroy = i915_gem_dumb_destroy,
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 11c7a6a..377c21f 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -940,6 +940,8 @@ struct drm_i915_gem_object {
struct scatterlist *sg_list;
int num_sg;
+ /* prime dma-buf support */
+ struct sg_table *sg_table;
/**
* Used for performing relocations during execbuffer insertion.
*/
@@ -1245,6 +1247,8 @@ int __must_check i915_gem_object_unbind(struct drm_i915_gem_object *obj);
void i915_gem_release_mmap(struct drm_i915_gem_object *obj);
void i915_gem_lastclose(struct drm_device *dev);
+int i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj,
+ gfp_t gfpmask);
int __must_check i915_mutex_lock_interruptible(struct drm_device *dev);
int __must_check i915_gem_object_wait_rendering(struct drm_i915_gem_object *obj);
int i915_gem_object_sync(struct drm_i915_gem_object *obj,
@@ -1342,6 +1346,13 @@ i915_gem_get_unfenced_gtt_alignment(struct drm_device *dev,
int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj,
enum i915_cache_level cache_level);
+struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
+ struct dma_buf *dma_buf);
+
+struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
+ struct drm_gem_object *gem_obj, int flags);
+
+
/* i915_gem_gtt.c */
int __must_check i915_gem_init_aliasing_ppgtt(struct drm_device *dev);
void i915_gem_cleanup_aliasing_ppgtt(struct drm_device *dev);
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 6d2180c..c1e5c66 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -35,6 +35,7 @@
#include <linux/slab.h>
#include <linux/swap.h>
#include <linux/pci.h>
+#include <linux/dma-buf.h>
static __must_check int i915_gem_object_flush_gpu_write_domain(struct drm_i915_gem_object *obj);
static void i915_gem_object_flush_gtt_write_domain(struct drm_i915_gem_object *obj);
@@ -538,6 +539,14 @@ i915_gem_pread_ioctl(struct drm_device *dev, void *data,
goto out;
}
+ /* prime objects have no backing filp to GEM pread/pwrite
+ * pages from.
+ */
+ if (!obj->base.filp) {
+ ret = -EINVAL;
+ goto out;
+ }
+
trace_i915_gem_object_pread(obj, args->offset, args->size);
ret = i915_gem_shmem_pread(dev, obj, args, file);
@@ -880,6 +889,14 @@ i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
goto out;
}
+ /* prime objects have no backing filp to GEM pread/pwrite
+ * pages from.
+ */
+ if (!obj->base.filp) {
+ ret = -EINVAL;
+ goto out;
+ }
+
trace_i915_gem_object_pwrite(obj, args->offset, args->size);
ret = -EFAULT;
@@ -1021,6 +1038,14 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
if (obj == NULL)
return -ENOENT;
+ /* prime objects have no backing filp to GEM mmap
+ * pages from.
+ */
+ if (!obj->filp) {
+ drm_gem_object_unreference_unlocked(obj);
+ return -EINVAL;
+ }
+
addr = vm_mmap(obj->filp, 0, args->size,
PROT_READ | PROT_WRITE, MAP_SHARED,
args->offset);
@@ -1302,8 +1327,7 @@ i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data,
return i915_gem_mmap_gtt(file, dev, args->handle, &args->offset);
}
-
-static int
+int
i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj,
gfp_t gfpmask)
{
@@ -1312,6 +1336,9 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj,
struct inode *inode;
struct page *page;
+ if (obj->pages || obj->sg_table)
+ return 0;
+
/* Get the list of pages out of our struct file. They'll be pinned
* at this point until we release them.
*/
@@ -1353,6 +1380,9 @@ i915_gem_object_put_pages_gtt(struct drm_i915_gem_object *obj)
int page_count = obj->base.size / PAGE_SIZE;
int i;
+ if (!obj->pages)
+ return;
+
BUG_ON(obj->madv == __I915_MADV_PURGED);
if (i915_gem_object_needs_bit17_swizzle(obj))
@@ -3327,6 +3357,9 @@ void i915_gem_free_object(struct drm_gem_object *gem_obj)
trace_i915_gem_object_destroy(obj);
+ if (gem_obj->import_attach)
+ drm_prime_gem_destroy(gem_obj, obj->sg_table);
+
if (obj->phys_obj)
i915_gem_detach_phys_object(dev, obj);
diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
new file mode 100644
index 0000000..4f8e142
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
@@ -0,0 +1,171 @@
+/*
+ * Copyright 2012 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 (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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 <airlied@redhat.com>
+ */
+#include "drmP.h"
+#include "i915_drv.h"
+#include <linux/dma-buf.h>
+
+struct sg_table *i915_gem_map_dma_buf(struct dma_buf_attachment *attachment,
+ enum dma_data_direction dir)
+{
+ struct drm_i915_gem_object *obj = attachment->dmabuf->priv;
+ struct drm_device *dev = obj->base.dev;
+ int npages = obj->base.size / PAGE_SIZE;
+ struct sg_table *sg = NULL;
+ int ret;
+ int nents;
+
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret)
+ return ERR_PTR(ret);
+
+ if (!obj->pages) {
+ ret = i915_gem_object_get_pages_gtt(obj, __GFP_NORETRY | __GFP_NOWARN);
+ if (ret)
+ goto out;
+ }
+
+ /* link the pages into an SG then map the sg */
+ sg = drm_prime_pages_to_sg(obj->pages, npages);
+ nents = dma_map_sg(attachment->dev, sg->sgl, sg->nents, dir);
+out:
+ mutex_unlock(&dev->struct_mutex);
+ return sg;
+}
+
+void i915_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);
+}
+
+void i915_gem_dmabuf_release(struct dma_buf *dma_buf)
+{
+ struct drm_i915_gem_object *obj = dma_buf->priv;
+
+ if (obj->base.export_dma_buf == dma_buf) {
+ /* drop the reference on the export fd holds */
+ obj->base.export_dma_buf = NULL;
+ drm_gem_object_unreference_unlocked(&obj->base);
+ }
+}
+
+static void *i915_gem_dmabuf_kmap_atomic(struct dma_buf *dma_buf, unsigned long page_num)
+{
+ return NULL;
+}
+
+static void i915_gem_dmabuf_kunmap_atomic(struct dma_buf *dma_buf, unsigned long page_num, void *addr)
+{
+
+}
+static void *i915_gem_dmabuf_kmap(struct dma_buf *dma_buf, unsigned long page_num)
+{
+ return NULL;
+}
+
+static void i915_gem_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned long page_num, void *addr)
+{
+
+}
+
+struct dma_buf_ops i915_dmabuf_ops = {
+ .map_dma_buf = i915_gem_map_dma_buf,
+ .unmap_dma_buf = i915_gem_unmap_dma_buf,
+ .release = i915_gem_dmabuf_release,
+ .kmap = i915_gem_dmabuf_kmap,
+ .kmap_atomic = i915_gem_dmabuf_kmap_atomic,
+ .kunmap = i915_gem_dmabuf_kunmap,
+ .kunmap_atomic = i915_gem_dmabuf_kunmap_atomic,
+};
+
+struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
+ struct drm_gem_object *gem_obj, int flags)
+{
+ struct drm_i915_gem_object *obj = to_intel_bo(gem_obj);
+
+ return dma_buf_export(obj, &i915_dmabuf_ops,
+ obj->base.size, 0600);
+}
+
+struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
+ struct dma_buf *dma_buf)
+{
+ struct dma_buf_attachment *attach;
+ struct sg_table *sg;
+ struct drm_i915_gem_object *obj;
+ int npages;
+ int size;
+ int ret;
+
+ /* is this one of own objects? */
+ if (dma_buf->ops == &i915_dmabuf_ops) {
+ obj = dma_buf->priv;
+ /* is it from our device? */
+ if (obj->base.dev == dev) {
+ drm_gem_object_reference(&obj->base);
+ return &obj->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;
+ }
+
+ size = dma_buf->size;
+ npages = size / PAGE_SIZE;
+
+ obj = kzalloc(sizeof(*obj), GFP_KERNEL);
+ if (obj == NULL) {
+ ret = -ENOMEM;
+ goto fail_unmap;
+ }
+
+ ret = drm_gem_private_object_init(dev, &obj->base, size);
+ if (ret) {
+ kfree(obj);
+ goto fail_unmap;
+ }
+
+ obj->sg_table = sg;
+ obj->base.import_attach = attach;
+
+ return &obj->base;
+
+fail_unmap:
+ dma_buf_unmap_attachment(attach, sg, DMA_BIDIRECTIONAL);
+fail_detach:
+ dma_buf_detach(dma_buf, attach);
+ return ERR_PTR(ret);
+}
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 29d573c..9fd25a4 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -267,7 +267,13 @@ void i915_ppgtt_bind_object(struct i915_hw_ppgtt *ppgtt,
BUG();
}
- if (dev_priv->mm.gtt->needs_dmar) {
+ if (obj->sg_table) {
+ i915_ppgtt_insert_sg_entries(ppgtt,
+ obj->sg_table->sgl,
+ obj->sg_table->nents,
+ obj->gtt_space->start >> PAGE_SHIFT,
+ pte_flags);
+ } else if (dev_priv->mm.gtt->needs_dmar) {
BUG_ON(!obj->sg_list);
i915_ppgtt_insert_sg_entries(ppgtt,
@@ -371,7 +377,12 @@ void i915_gem_gtt_bind_object(struct drm_i915_gem_object *obj,
struct drm_i915_private *dev_priv = dev->dev_private;
unsigned int agp_type = cache_level_to_agp_type(dev, cache_level);
- if (dev_priv->mm.gtt->needs_dmar) {
+ if (obj->sg_table) {
+ intel_gtt_insert_sg_entries(obj->sg_table->sgl,
+ obj->sg_table->nents,
+ obj->gtt_space->start >> PAGE_SHIFT,
+ agp_type);
+ } else if (dev_priv->mm.gtt->needs_dmar) {
BUG_ON(!obj->sg_list);
intel_gtt_insert_sg_entries(obj->sg_list,
--
1.7.6
^ permalink raw reply related [flat|nested] 15+ messages in thread* Re: [PATCH 6/7] i915: add dmabuf/prime buffer sharing support.
2012-05-22 12:50 ` [PATCH 6/7] i915: add dmabuf/prime buffer sharing support Dave Airlie
@ 2012-05-22 13:28 ` Chris Wilson
0 siblings, 0 replies; 15+ messages in thread
From: Chris Wilson @ 2012-05-22 13:28 UTC (permalink / raw)
To: Dave Airlie, dri-devel
On Tue, 22 May 2012 13:50:03 +0100, Dave Airlie <airlied@gmail.com> wrote:
> From: Daniel Vetter <daniel.vetter@ffwll.ch>
>
> This adds handle->fd and fd->handle support to i915, this is to allow
> for offloading of rendering in one direction and outputs in the other.
>
> v2 from Daniel Vetter:
> - fixup conflicts with the prepare/finish gtt prep work.
> - implement ppgtt binding support.
>
> Note that we have squat i-g-t testcoverage for any of the lifetime and
> access rules dma_buf/prime support brings along. And there are quite a
> few intricate situations here.
>
> Also note that the integration with the existing code is a bit
> hackish, especially around get_gtt_pages and put_gtt_pages. It imo
> would be easier with the prep code from Chris Wilson's unbound series,
> but that is for 3.6.
>
> Also note that I didn't bother to put the new prepare/finish gtt hooks
> to good use by moving the dma_buf_map/unmap_attachment calls in there
> (like we've originally planned for).
>
> Last but not least this patch is only compile-tested, but I've changed
> very little compared to Dave Airlie's version. So there's a decent
> chance v2 on drm-next works as well as v1 on 3.4-rc.
>
> v3: Right when I've hit sent I've noticed that I've screwed up one
> obj->sg_list (for dmar support) and obj->sg_table (for prime support)
> disdinction. We should be able to merge these 2 paths, but that's
> material for another patch.
>
> v4: fix the error reporting bugs pointed out by ickle.
>
> v5: fix another error, and stop non-gtt mmaps on shared objects
> stop pread/pwrite on imported objects, add fake kmap
Everything up to this point looks reasonable wrt i915. We obviously need
to lift a few of the restrictions for i915 introduced here and protect
dma-buf objects from the shrinker/truncate. In fact we need to add a
guard to i915_gem_object_truncate in this patch to prevent one such
explosion. Wrt to the shrinker and the leak of exported pages, that
should be managed by the unbound page tracking which is queued for
review this cycle (right Daniel? ;). That just leaves fixing up
pread/pwrite and fixing the other guards that will interact sorely with
stolen (also non-shmem backed) objects.
-Chris
> Signed-off-by: Dave Airlie <airlied@redhat.com>
> Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> ---
> drivers/gpu/drm/i915/Makefile | 3 +-
> drivers/gpu/drm/i915/i915_drv.c | 8 ++-
> drivers/gpu/drm/i915/i915_drv.h | 11 ++
> drivers/gpu/drm/i915/i915_gem.c | 37 +++++++-
> drivers/gpu/drm/i915/i915_gem_dmabuf.c | 171 ++++++++++++++++++++++++++++++++
> drivers/gpu/drm/i915/i915_gem_gtt.c | 15 +++-
> 6 files changed, 239 insertions(+), 6 deletions(-)
> create mode 100644 drivers/gpu/drm/i915/i915_gem_dmabuf.c
>
> diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
> index 0ca7f76..2e9268d 100644
> --- a/drivers/gpu/drm/i915/Makefile
> +++ b/drivers/gpu/drm/i915/Makefile
> @@ -38,7 +38,8 @@ i915-y := i915_drv.o i915_dma.o i915_irq.o \
> dvo_ch7017.o \
> dvo_ivch.o \
> dvo_tfp410.o \
> - dvo_sil164.o
> + dvo_sil164.o \
> + i915_gem_dmabuf.o
Since we need another chunk to this patch, can you please add this file
in the i915_gem_*.c block.
--
Chris Wilson, Intel Open Source Technology Centre
^ permalink raw reply [flat|nested] 15+ messages in thread
* [PATCH 7/7] drm/radeon: add PRIME support (v2)
2012-05-22 12:49 [PATCH 1/7] drm/prime: introduce sg->pages/addr arrays helper Dave Airlie
` (4 preceding siblings ...)
2012-05-22 12:50 ` [PATCH 6/7] i915: add dmabuf/prime buffer sharing support Dave Airlie
@ 2012-05-22 12:50 ` Dave Airlie
2012-05-22 20:56 ` Jerome Glisse
2012-05-22 21:09 ` Alex Deucher
2012-05-22 21:08 ` [PATCH 1/7] drm/prime: introduce sg->pages/addr arrays helper Alex Deucher
6 siblings, 2 replies; 15+ messages in thread
From: Dave Airlie @ 2012-05-22 12:50 UTC (permalink / raw)
To: dri-devel
From: Alex Deucher <alexander.deucher@amd.com>
This adds prime->fd and fd->prime support to radeon.
It passes the sg object to ttm and then populates
the gart entries using it.
Compile tested only.
v2: stub kmap + use new helpers + add reimporting
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---
drivers/gpu/drm/radeon/Makefile | 2 +-
drivers/gpu/drm/radeon/evergreen_blit_kms.c | 2 +-
drivers/gpu/drm/radeon/r600.c | 4 +-
drivers/gpu/drm/radeon/r600_blit_kms.c | 2 +-
drivers/gpu/drm/radeon/radeon_benchmark.c | 4 +-
drivers/gpu/drm/radeon/radeon_device.c | 2 +-
drivers/gpu/drm/radeon/radeon_drv.c | 14 ++-
drivers/gpu/drm/radeon/radeon_gart.c | 2 +-
drivers/gpu/drm/radeon/radeon_gem.c | 4 +-
drivers/gpu/drm/radeon/radeon_object.c | 6 +-
drivers/gpu/drm/radeon/radeon_object.h | 7 +-
drivers/gpu/drm/radeon/radeon_prime.c | 176 +++++++++++++++++++++++++++
drivers/gpu/drm/radeon/radeon_ring.c | 4 +-
drivers/gpu/drm/radeon/radeon_sa.c | 2 +-
drivers/gpu/drm/radeon/radeon_test.c | 4 +-
drivers/gpu/drm/radeon/radeon_ttm.c | 16 ++-
drivers/gpu/drm/radeon/si.c | 6 +-
17 files changed, 232 insertions(+), 25 deletions(-)
create mode 100644 drivers/gpu/drm/radeon/radeon_prime.c
diff --git a/drivers/gpu/drm/radeon/Makefile b/drivers/gpu/drm/radeon/Makefile
index 1efb6eb..a6598fd 100644
--- a/drivers/gpu/drm/radeon/Makefile
+++ b/drivers/gpu/drm/radeon/Makefile
@@ -72,7 +72,7 @@ radeon-y += radeon_device.o radeon_asic.o radeon_kms.o \
evergreen.o evergreen_cs.o evergreen_blit_shaders.o evergreen_blit_kms.o \
evergreen_hdmi.o radeon_trace_points.o ni.o cayman_blit_shaders.o \
atombios_encoders.o radeon_semaphore.o radeon_sa.o atombios_i2c.o si.o \
- si_blit_shaders.o
+ si_blit_shaders.o radeon_prime.o
radeon-$(CONFIG_COMPAT) += radeon_ioc32.o
radeon-$(CONFIG_VGA_SWITCHEROO) += radeon_atpx_handler.o
diff --git a/drivers/gpu/drm/radeon/evergreen_blit_kms.c b/drivers/gpu/drm/radeon/evergreen_blit_kms.c
index 30f0480..1e96bd4 100644
--- a/drivers/gpu/drm/radeon/evergreen_blit_kms.c
+++ b/drivers/gpu/drm/radeon/evergreen_blit_kms.c
@@ -668,7 +668,7 @@ int evergreen_blit_init(struct radeon_device *rdev)
obj_size = ALIGN(obj_size, 256);
r = radeon_bo_create(rdev, obj_size, PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
- &rdev->r600_blit.shader_obj);
+ NULL, &rdev->r600_blit.shader_obj);
if (r) {
DRM_ERROR("evergreen failed to allocate shader\n");
return r;
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index ab5d6f2..f388a1d 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -1231,7 +1231,7 @@ int r600_vram_scratch_init(struct radeon_device *rdev)
if (rdev->vram_scratch.robj == NULL) {
r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE,
PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
- &rdev->vram_scratch.robj);
+ NULL, &rdev->vram_scratch.robj);
if (r) {
return r;
}
@@ -2769,7 +2769,7 @@ int r600_ih_ring_alloc(struct radeon_device *rdev)
r = radeon_bo_create(rdev, rdev->ih.ring_size,
PAGE_SIZE, true,
RADEON_GEM_DOMAIN_GTT,
- &rdev->ih.ring_obj);
+ NULL, &rdev->ih.ring_obj);
if (r) {
DRM_ERROR("radeon: failed to create ih ring buffer (%d).\n", r);
return r;
diff --git a/drivers/gpu/drm/radeon/r600_blit_kms.c b/drivers/gpu/drm/radeon/r600_blit_kms.c
index ef20822..03b6e0d 100644
--- a/drivers/gpu/drm/radeon/r600_blit_kms.c
+++ b/drivers/gpu/drm/radeon/r600_blit_kms.c
@@ -552,7 +552,7 @@ int r600_blit_init(struct radeon_device *rdev)
obj_size = ALIGN(obj_size, 256);
r = radeon_bo_create(rdev, obj_size, PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
- &rdev->r600_blit.shader_obj);
+ NULL, &rdev->r600_blit.shader_obj);
if (r) {
DRM_ERROR("r600 failed to allocate shader\n");
return r;
diff --git a/drivers/gpu/drm/radeon/radeon_benchmark.c b/drivers/gpu/drm/radeon/radeon_benchmark.c
index fef7b72..364f5b1 100644
--- a/drivers/gpu/drm/radeon/radeon_benchmark.c
+++ b/drivers/gpu/drm/radeon/radeon_benchmark.c
@@ -103,7 +103,7 @@ static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size,
int time;
n = RADEON_BENCHMARK_ITERATIONS;
- r = radeon_bo_create(rdev, size, PAGE_SIZE, true, sdomain, &sobj);
+ r = radeon_bo_create(rdev, size, PAGE_SIZE, true, sdomain, NULL, &sobj);
if (r) {
goto out_cleanup;
}
@@ -115,7 +115,7 @@ static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size,
if (r) {
goto out_cleanup;
}
- r = radeon_bo_create(rdev, size, PAGE_SIZE, true, ddomain, &dobj);
+ r = radeon_bo_create(rdev, size, PAGE_SIZE, true, ddomain, NULL, &dobj);
if (r) {
goto out_cleanup;
}
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 5763701..066c98b 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -193,7 +193,7 @@ int radeon_wb_init(struct radeon_device *rdev)
if (rdev->wb.wb_obj == NULL) {
r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
- RADEON_GEM_DOMAIN_GTT, &rdev->wb.wb_obj);
+ RADEON_GEM_DOMAIN_GTT, NULL, &rdev->wb.wb_obj);
if (r) {
dev_warn(rdev->dev, "(%d) create WB bo failed\n", r);
return r;
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index e62e56a..f0bb2b5 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -105,6 +105,11 @@ int radeon_mode_dumb_create(struct drm_file *file_priv,
int radeon_mode_dumb_destroy(struct drm_file *file_priv,
struct drm_device *dev,
uint32_t handle);
+struct dma_buf *radeon_gem_prime_export(struct drm_device *dev,
+ struct drm_gem_object *obj,
+ int flags);
+struct drm_gem_object *radeon_gem_prime_import(struct drm_device *dev,
+ struct dma_buf *dma_buf);
#if defined(CONFIG_DEBUG_FS)
int radeon_debugfs_init(struct drm_minor *minor);
@@ -333,7 +338,8 @@ static const struct file_operations radeon_driver_kms_fops = {
static struct drm_driver kms_driver = {
.driver_features =
DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
- DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED | DRIVER_GEM,
+ DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED | DRIVER_GEM |
+ DRIVER_PRIME,
.dev_priv_size = 0,
.load = radeon_driver_load_kms,
.firstopen = radeon_driver_firstopen_kms,
@@ -368,6 +374,12 @@ static struct drm_driver kms_driver = {
.dumb_map_offset = radeon_mode_dumb_mmap,
.dumb_destroy = radeon_mode_dumb_destroy,
.fops = &radeon_driver_kms_fops,
+
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_export = radeon_gem_prime_export,
+ .gem_prime_import = radeon_gem_prime_import,
+
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c
index 8e9ef34..4fa5402 100644
--- a/drivers/gpu/drm/radeon/radeon_gart.c
+++ b/drivers/gpu/drm/radeon/radeon_gart.c
@@ -80,7 +80,7 @@ int radeon_gart_table_vram_alloc(struct radeon_device *rdev)
if (rdev->gart.robj == NULL) {
r = radeon_bo_create(rdev, rdev->gart.table_size,
PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
- &rdev->gart.robj);
+ NULL, &rdev->gart.robj);
if (r) {
return r;
}
diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
index e15cb1f..c0130b0 100644
--- a/drivers/gpu/drm/radeon/radeon_gem.c
+++ b/drivers/gpu/drm/radeon/radeon_gem.c
@@ -42,6 +42,8 @@ void radeon_gem_object_free(struct drm_gem_object *gobj)
struct radeon_bo *robj = gem_to_radeon_bo(gobj);
if (robj) {
+ if (robj->gem_base.import_attach)
+ drm_prime_gem_destroy(&robj->gem_base, robj->tbo.sg);
radeon_bo_unref(&robj);
}
}
@@ -59,7 +61,7 @@ int radeon_gem_object_create(struct radeon_device *rdev, int size,
if (alignment < PAGE_SIZE) {
alignment = PAGE_SIZE;
}
- r = radeon_bo_create(rdev, size, alignment, kernel, initial_domain, &robj);
+ r = radeon_bo_create(rdev, size, alignment, kernel, initial_domain, NULL, &robj);
if (r) {
if (r != -ERESTARTSYS)
DRM_ERROR("Failed to allocate GEM object (%d, %d, %u, %d)\n",
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index 1affbc9..830f1a7 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -104,7 +104,7 @@ void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain)
int radeon_bo_create(struct radeon_device *rdev,
unsigned long size, int byte_align, bool kernel, u32 domain,
- struct radeon_bo **bo_ptr)
+ struct sg_table *sg, struct radeon_bo **bo_ptr)
{
struct radeon_bo *bo;
enum ttm_bo_type type;
@@ -120,6 +120,8 @@ int radeon_bo_create(struct radeon_device *rdev,
}
if (kernel) {
type = ttm_bo_type_kernel;
+ } else if (sg) {
+ type = ttm_bo_type_sg;
} else {
type = ttm_bo_type_device;
}
@@ -155,7 +157,7 @@ retry:
mutex_lock(&rdev->vram_mutex);
r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type,
&bo->placement, page_align, 0, !kernel, NULL,
- acc_size, NULL, &radeon_ttm_bo_destroy);
+ acc_size, sg, &radeon_ttm_bo_destroy);
mutex_unlock(&rdev->vram_mutex);
if (unlikely(r != 0)) {
if (r != -ERESTARTSYS) {
diff --git a/drivers/gpu/drm/radeon/radeon_object.h b/drivers/gpu/drm/radeon/radeon_object.h
index befec7d..17fb99f 100644
--- a/drivers/gpu/drm/radeon/radeon_object.h
+++ b/drivers/gpu/drm/radeon/radeon_object.h
@@ -111,9 +111,10 @@ extern int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type,
bool no_wait);
extern int radeon_bo_create(struct radeon_device *rdev,
- unsigned long size, int byte_align,
- bool kernel, u32 domain,
- struct radeon_bo **bo_ptr);
+ unsigned long size, int byte_align,
+ bool kernel, u32 domain,
+ struct sg_table *sg,
+ struct radeon_bo **bo_ptr);
extern int radeon_bo_kmap(struct radeon_bo *bo, void **ptr);
extern void radeon_bo_kunmap(struct radeon_bo *bo);
extern void radeon_bo_unref(struct radeon_bo **bo);
diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c
new file mode 100644
index 0000000..24f5175
--- /dev/null
+++ b/drivers/gpu/drm/radeon/radeon_prime.c
@@ -0,0 +1,176 @@
+/*
+ * Copyright 2012 Advanced Micro Devices, 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.
+ *
+ * based on nouveau_prime.c
+ *
+ * Authors: Alex Deucher
+ */
+#include "drmP.h"
+#include "drm.h"
+
+#include "radeon.h"
+#include "radeon_drm.h"
+
+#include <linux/dma-buf.h>
+
+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 drm_device *dev = bo->rdev->ddev;
+ 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) {
+ 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)
+{
+
+}
+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)
+{
+
+}
+
+struct dma_buf_ops radeon_dmabuf_ops = {
+ .map_dma_buf = radeon_gem_map_dma_buf,
+ .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,
+};
+
+static int radeon_prime_create(struct drm_device *dev,
+ size_t size,
+ struct sg_table *sg,
+ struct radeon_bo **pbo)
+{
+ struct radeon_device *rdev = dev->dev_private;
+ struct radeon_bo *bo;
+ int ret;
+
+ ret = radeon_bo_create(rdev, size, PAGE_SIZE, false,
+ RADEON_GEM_DOMAIN_GTT, sg, pbo);
+ if (ret)
+ return ret;
+ bo = *pbo;
+ bo->gem_base.driver_private = bo;
+
+ mutex_lock(&rdev->gem.mutex);
+ list_add_tail(&bo->list, &rdev->gem.objects);
+ mutex_unlock(&rdev->gem.mutex);
+
+ return 0;
+}
+
+struct dma_buf *radeon_gem_prime_export(struct drm_device *dev,
+ struct drm_gem_object *obj,
+ int flags)
+{
+ struct radeon_bo *bo = gem_to_radeon_bo(obj);
+ int ret = 0;
+
+ /* pin buffer into GTT */
+ ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL);
+ if (ret)
+ return ERR_PTR(ret);
+
+ return dma_buf_export(bo, &radeon_dmabuf_ops, obj->size, flags);
+}
+
+struct drm_gem_object *radeon_gem_prime_import(struct drm_device *dev,
+ 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);
+ 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);
+}
diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
index a5dee76..493a7be 100644
--- a/drivers/gpu/drm/radeon/radeon_ring.c
+++ b/drivers/gpu/drm/radeon/radeon_ring.c
@@ -390,8 +390,8 @@ int radeon_ring_init(struct radeon_device *rdev, struct radeon_ring *ring, unsig
/* Allocate ring buffer */
if (ring->ring_obj == NULL) {
r = radeon_bo_create(rdev, ring->ring_size, PAGE_SIZE, true,
- RADEON_GEM_DOMAIN_GTT,
- &ring->ring_obj);
+ RADEON_GEM_DOMAIN_GTT,
+ NULL, &ring->ring_obj);
if (r) {
dev_err(rdev->dev, "(%d) ring create failed\n", r);
return r;
diff --git a/drivers/gpu/drm/radeon/radeon_sa.c b/drivers/gpu/drm/radeon/radeon_sa.c
index c3ac7f4..32059b7 100644
--- a/drivers/gpu/drm/radeon/radeon_sa.c
+++ b/drivers/gpu/drm/radeon/radeon_sa.c
@@ -65,7 +65,7 @@ int radeon_sa_bo_manager_init(struct radeon_device *rdev,
}
r = radeon_bo_create(rdev, size, RADEON_GPU_PAGE_SIZE, true,
- RADEON_GEM_DOMAIN_CPU, &sa_manager->bo);
+ RADEON_GEM_DOMAIN_CPU, NULL, &sa_manager->bo);
if (r) {
dev_err(rdev->dev, "(%d) failed to allocate bo for manager\n", r);
return r;
diff --git a/drivers/gpu/drm/radeon/radeon_test.c b/drivers/gpu/drm/radeon/radeon_test.c
index b057387..efff929 100644
--- a/drivers/gpu/drm/radeon/radeon_test.c
+++ b/drivers/gpu/drm/radeon/radeon_test.c
@@ -59,7 +59,7 @@ void radeon_test_moves(struct radeon_device *rdev)
}
r = radeon_bo_create(rdev, size, PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
- &vram_obj);
+ NULL, &vram_obj);
if (r) {
DRM_ERROR("Failed to create VRAM object\n");
goto out_cleanup;
@@ -78,7 +78,7 @@ void radeon_test_moves(struct radeon_device *rdev)
void **vram_start, **vram_end;
r = radeon_bo_create(rdev, size, PAGE_SIZE, true,
- RADEON_GEM_DOMAIN_GTT, gtt_obj + i);
+ RADEON_GEM_DOMAIN_GTT, NULL, gtt_obj + i);
if (r) {
DRM_ERROR("Failed to create GTT object %d\n", i);
goto out_cleanup;
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index 0f6aee8..c94a225 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -611,10 +611,18 @@ static int radeon_ttm_tt_populate(struct ttm_tt *ttm)
struct radeon_ttm_tt *gtt = (void *)ttm;
unsigned i;
int r;
+ bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
if (ttm->state != tt_unpopulated)
return 0;
+ if (slave && ttm->sg) {
+ drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages,
+ gtt->ttm.dma_address, ttm->num_pages);
+ ttm->state = tt_unbound;
+ return 0;
+ }
+
rdev = radeon_get_rdev(ttm->bdev);
#if __OS_HAS_AGP
if (rdev->flags & RADEON_IS_AGP) {
@@ -655,6 +663,10 @@ static void radeon_ttm_tt_unpopulate(struct ttm_tt *ttm)
struct radeon_device *rdev;
struct radeon_ttm_tt *gtt = (void *)ttm;
unsigned i;
+ bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
+
+ if (slave)
+ return;
rdev = radeon_get_rdev(ttm->bdev);
#if __OS_HAS_AGP
@@ -726,8 +738,8 @@ int radeon_ttm_init(struct radeon_device *rdev)
return r;
}
r = radeon_bo_create(rdev, 256 * 1024, PAGE_SIZE, true,
- RADEON_GEM_DOMAIN_VRAM,
- &rdev->stollen_vga_memory);
+ RADEON_GEM_DOMAIN_VRAM,
+ NULL, &rdev->stollen_vga_memory);
if (r) {
return r;
}
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 63ae41d..549732e 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -2976,7 +2976,8 @@ int si_rlc_init(struct radeon_device *rdev)
/* save restore block */
if (rdev->rlc.save_restore_obj == NULL) {
r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
- RADEON_GEM_DOMAIN_VRAM, &rdev->rlc.save_restore_obj);
+ RADEON_GEM_DOMAIN_VRAM, NULL,
+ &rdev->rlc.save_restore_obj);
if (r) {
dev_warn(rdev->dev, "(%d) create RLC sr bo failed\n", r);
return r;
@@ -3000,7 +3001,8 @@ int si_rlc_init(struct radeon_device *rdev)
/* clear state block */
if (rdev->rlc.clear_state_obj == NULL) {
r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
- RADEON_GEM_DOMAIN_VRAM, &rdev->rlc.clear_state_obj);
+ RADEON_GEM_DOMAIN_VRAM, NULL,
+ &rdev->rlc.clear_state_obj);
if (r) {
dev_warn(rdev->dev, "(%d) create RLC c bo failed\n", r);
si_rlc_fini(rdev);
--
1.7.6
^ permalink raw reply related [flat|nested] 15+ messages in thread* Re: [PATCH 7/7] drm/radeon: add PRIME support (v2)
2012-05-22 12:50 ` [PATCH 7/7] drm/radeon: add PRIME support (v2) Dave Airlie
@ 2012-05-22 20:56 ` Jerome Glisse
2012-05-22 21:09 ` Alex Deucher
1 sibling, 0 replies; 15+ messages in thread
From: Jerome Glisse @ 2012-05-22 20:56 UTC (permalink / raw)
To: Dave Airlie; +Cc: dri-devel
On Tue, May 22, 2012 at 8:50 AM, Dave Airlie <airlied@gmail.com> wrote:
> From: Alex Deucher <alexander.deucher@amd.com>
>
> This adds prime->fd and fd->prime support to radeon.
> It passes the sg object to ttm and then populates
> the gart entries using it.
>
> Compile tested only.
>
> v2: stub kmap + use new helpers + add reimporting
>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
> ---
> drivers/gpu/drm/radeon/Makefile | 2 +-
> drivers/gpu/drm/radeon/evergreen_blit_kms.c | 2 +-
> drivers/gpu/drm/radeon/r600.c | 4 +-
> drivers/gpu/drm/radeon/r600_blit_kms.c | 2 +-
> drivers/gpu/drm/radeon/radeon_benchmark.c | 4 +-
> drivers/gpu/drm/radeon/radeon_device.c | 2 +-
> drivers/gpu/drm/radeon/radeon_drv.c | 14 ++-
> drivers/gpu/drm/radeon/radeon_gart.c | 2 +-
> drivers/gpu/drm/radeon/radeon_gem.c | 4 +-
> drivers/gpu/drm/radeon/radeon_object.c | 6 +-
> drivers/gpu/drm/radeon/radeon_object.h | 7 +-
> drivers/gpu/drm/radeon/radeon_prime.c | 176 +++++++++++++++++++++++++++
> drivers/gpu/drm/radeon/radeon_ring.c | 4 +-
> drivers/gpu/drm/radeon/radeon_sa.c | 2 +-
> drivers/gpu/drm/radeon/radeon_test.c | 4 +-
> drivers/gpu/drm/radeon/radeon_ttm.c | 16 ++-
> drivers/gpu/drm/radeon/si.c | 6 +-
> 17 files changed, 232 insertions(+), 25 deletions(-)
> create mode 100644 drivers/gpu/drm/radeon/radeon_prime.c
>
> diff --git a/drivers/gpu/drm/radeon/Makefile b/drivers/gpu/drm/radeon/Makefile
> index 1efb6eb..a6598fd 100644
> --- a/drivers/gpu/drm/radeon/Makefile
> +++ b/drivers/gpu/drm/radeon/Makefile
> @@ -72,7 +72,7 @@ radeon-y += radeon_device.o radeon_asic.o radeon_kms.o \
> evergreen.o evergreen_cs.o evergreen_blit_shaders.o evergreen_blit_kms.o \
> evergreen_hdmi.o radeon_trace_points.o ni.o cayman_blit_shaders.o \
> atombios_encoders.o radeon_semaphore.o radeon_sa.o atombios_i2c.o si.o \
> - si_blit_shaders.o
> + si_blit_shaders.o radeon_prime.o
>
> radeon-$(CONFIG_COMPAT) += radeon_ioc32.o
> radeon-$(CONFIG_VGA_SWITCHEROO) += radeon_atpx_handler.o
> diff --git a/drivers/gpu/drm/radeon/evergreen_blit_kms.c b/drivers/gpu/drm/radeon/evergreen_blit_kms.c
> index 30f0480..1e96bd4 100644
> --- a/drivers/gpu/drm/radeon/evergreen_blit_kms.c
> +++ b/drivers/gpu/drm/radeon/evergreen_blit_kms.c
> @@ -668,7 +668,7 @@ int evergreen_blit_init(struct radeon_device *rdev)
> obj_size = ALIGN(obj_size, 256);
>
> r = radeon_bo_create(rdev, obj_size, PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
> - &rdev->r600_blit.shader_obj);
> + NULL, &rdev->r600_blit.shader_obj);
> if (r) {
> DRM_ERROR("evergreen failed to allocate shader\n");
> return r;
> diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
> index ab5d6f2..f388a1d 100644
> --- a/drivers/gpu/drm/radeon/r600.c
> +++ b/drivers/gpu/drm/radeon/r600.c
> @@ -1231,7 +1231,7 @@ int r600_vram_scratch_init(struct radeon_device *rdev)
> if (rdev->vram_scratch.robj == NULL) {
> r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE,
> PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
> - &rdev->vram_scratch.robj);
> + NULL, &rdev->vram_scratch.robj);
> if (r) {
> return r;
> }
> @@ -2769,7 +2769,7 @@ int r600_ih_ring_alloc(struct radeon_device *rdev)
> r = radeon_bo_create(rdev, rdev->ih.ring_size,
> PAGE_SIZE, true,
> RADEON_GEM_DOMAIN_GTT,
> - &rdev->ih.ring_obj);
> + NULL, &rdev->ih.ring_obj);
> if (r) {
> DRM_ERROR("radeon: failed to create ih ring buffer (%d).\n", r);
> return r;
> diff --git a/drivers/gpu/drm/radeon/r600_blit_kms.c b/drivers/gpu/drm/radeon/r600_blit_kms.c
> index ef20822..03b6e0d 100644
> --- a/drivers/gpu/drm/radeon/r600_blit_kms.c
> +++ b/drivers/gpu/drm/radeon/r600_blit_kms.c
> @@ -552,7 +552,7 @@ int r600_blit_init(struct radeon_device *rdev)
> obj_size = ALIGN(obj_size, 256);
>
> r = radeon_bo_create(rdev, obj_size, PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
> - &rdev->r600_blit.shader_obj);
> + NULL, &rdev->r600_blit.shader_obj);
> if (r) {
> DRM_ERROR("r600 failed to allocate shader\n");
> return r;
> diff --git a/drivers/gpu/drm/radeon/radeon_benchmark.c b/drivers/gpu/drm/radeon/radeon_benchmark.c
> index fef7b72..364f5b1 100644
> --- a/drivers/gpu/drm/radeon/radeon_benchmark.c
> +++ b/drivers/gpu/drm/radeon/radeon_benchmark.c
> @@ -103,7 +103,7 @@ static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size,
> int time;
>
> n = RADEON_BENCHMARK_ITERATIONS;
> - r = radeon_bo_create(rdev, size, PAGE_SIZE, true, sdomain, &sobj);
> + r = radeon_bo_create(rdev, size, PAGE_SIZE, true, sdomain, NULL, &sobj);
> if (r) {
> goto out_cleanup;
> }
> @@ -115,7 +115,7 @@ static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size,
> if (r) {
> goto out_cleanup;
> }
> - r = radeon_bo_create(rdev, size, PAGE_SIZE, true, ddomain, &dobj);
> + r = radeon_bo_create(rdev, size, PAGE_SIZE, true, ddomain, NULL, &dobj);
> if (r) {
> goto out_cleanup;
> }
> diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
> index 5763701..066c98b 100644
> --- a/drivers/gpu/drm/radeon/radeon_device.c
> +++ b/drivers/gpu/drm/radeon/radeon_device.c
> @@ -193,7 +193,7 @@ int radeon_wb_init(struct radeon_device *rdev)
>
> if (rdev->wb.wb_obj == NULL) {
> r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
> - RADEON_GEM_DOMAIN_GTT, &rdev->wb.wb_obj);
> + RADEON_GEM_DOMAIN_GTT, NULL, &rdev->wb.wb_obj);
> if (r) {
> dev_warn(rdev->dev, "(%d) create WB bo failed\n", r);
> return r;
> diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
> index e62e56a..f0bb2b5 100644
> --- a/drivers/gpu/drm/radeon/radeon_drv.c
> +++ b/drivers/gpu/drm/radeon/radeon_drv.c
> @@ -105,6 +105,11 @@ int radeon_mode_dumb_create(struct drm_file *file_priv,
> int radeon_mode_dumb_destroy(struct drm_file *file_priv,
> struct drm_device *dev,
> uint32_t handle);
> +struct dma_buf *radeon_gem_prime_export(struct drm_device *dev,
> + struct drm_gem_object *obj,
> + int flags);
> +struct drm_gem_object *radeon_gem_prime_import(struct drm_device *dev,
> + struct dma_buf *dma_buf);
>
> #if defined(CONFIG_DEBUG_FS)
> int radeon_debugfs_init(struct drm_minor *minor);
> @@ -333,7 +338,8 @@ static const struct file_operations radeon_driver_kms_fops = {
> static struct drm_driver kms_driver = {
> .driver_features =
> DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
> - DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED | DRIVER_GEM,
> + DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED | DRIVER_GEM |
> + DRIVER_PRIME,
> .dev_priv_size = 0,
> .load = radeon_driver_load_kms,
> .firstopen = radeon_driver_firstopen_kms,
> @@ -368,6 +374,12 @@ static struct drm_driver kms_driver = {
> .dumb_map_offset = radeon_mode_dumb_mmap,
> .dumb_destroy = radeon_mode_dumb_destroy,
> .fops = &radeon_driver_kms_fops,
> +
> + .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
> + .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
> + .gem_prime_export = radeon_gem_prime_export,
> + .gem_prime_import = radeon_gem_prime_import,
> +
> .name = DRIVER_NAME,
> .desc = DRIVER_DESC,
> .date = DRIVER_DATE,
> diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c
> index 8e9ef34..4fa5402 100644
> --- a/drivers/gpu/drm/radeon/radeon_gart.c
> +++ b/drivers/gpu/drm/radeon/radeon_gart.c
> @@ -80,7 +80,7 @@ int radeon_gart_table_vram_alloc(struct radeon_device *rdev)
> if (rdev->gart.robj == NULL) {
> r = radeon_bo_create(rdev, rdev->gart.table_size,
> PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
> - &rdev->gart.robj);
> + NULL, &rdev->gart.robj);
> if (r) {
> return r;
> }
> diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
> index e15cb1f..c0130b0 100644
> --- a/drivers/gpu/drm/radeon/radeon_gem.c
> +++ b/drivers/gpu/drm/radeon/radeon_gem.c
> @@ -42,6 +42,8 @@ void radeon_gem_object_free(struct drm_gem_object *gobj)
> struct radeon_bo *robj = gem_to_radeon_bo(gobj);
>
> if (robj) {
> + if (robj->gem_base.import_attach)
> + drm_prime_gem_destroy(&robj->gem_base, robj->tbo.sg);
> radeon_bo_unref(&robj);
> }
> }
> @@ -59,7 +61,7 @@ int radeon_gem_object_create(struct radeon_device *rdev, int size,
> if (alignment < PAGE_SIZE) {
> alignment = PAGE_SIZE;
> }
> - r = radeon_bo_create(rdev, size, alignment, kernel, initial_domain, &robj);
> + r = radeon_bo_create(rdev, size, alignment, kernel, initial_domain, NULL, &robj);
> if (r) {
> if (r != -ERESTARTSYS)
> DRM_ERROR("Failed to allocate GEM object (%d, %d, %u, %d)\n",
> diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
> index 1affbc9..830f1a7 100644
> --- a/drivers/gpu/drm/radeon/radeon_object.c
> +++ b/drivers/gpu/drm/radeon/radeon_object.c
> @@ -104,7 +104,7 @@ void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain)
>
> int radeon_bo_create(struct radeon_device *rdev,
> unsigned long size, int byte_align, bool kernel, u32 domain,
> - struct radeon_bo **bo_ptr)
> + struct sg_table *sg, struct radeon_bo **bo_ptr)
> {
> struct radeon_bo *bo;
> enum ttm_bo_type type;
> @@ -120,6 +120,8 @@ int radeon_bo_create(struct radeon_device *rdev,
> }
> if (kernel) {
> type = ttm_bo_type_kernel;
> + } else if (sg) {
> + type = ttm_bo_type_sg;
> } else {
> type = ttm_bo_type_device;
> }
> @@ -155,7 +157,7 @@ retry:
> mutex_lock(&rdev->vram_mutex);
> r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type,
> &bo->placement, page_align, 0, !kernel, NULL,
> - acc_size, NULL, &radeon_ttm_bo_destroy);
> + acc_size, sg, &radeon_ttm_bo_destroy);
> mutex_unlock(&rdev->vram_mutex);
> if (unlikely(r != 0)) {
> if (r != -ERESTARTSYS) {
> diff --git a/drivers/gpu/drm/radeon/radeon_object.h b/drivers/gpu/drm/radeon/radeon_object.h
> index befec7d..17fb99f 100644
> --- a/drivers/gpu/drm/radeon/radeon_object.h
> +++ b/drivers/gpu/drm/radeon/radeon_object.h
> @@ -111,9 +111,10 @@ extern int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type,
> bool no_wait);
>
> extern int radeon_bo_create(struct radeon_device *rdev,
> - unsigned long size, int byte_align,
> - bool kernel, u32 domain,
> - struct radeon_bo **bo_ptr);
> + unsigned long size, int byte_align,
> + bool kernel, u32 domain,
> + struct sg_table *sg,
> + struct radeon_bo **bo_ptr);
> extern int radeon_bo_kmap(struct radeon_bo *bo, void **ptr);
> extern void radeon_bo_kunmap(struct radeon_bo *bo);
> extern void radeon_bo_unref(struct radeon_bo **bo);
> diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c
> new file mode 100644
> index 0000000..24f5175
> --- /dev/null
> +++ b/drivers/gpu/drm/radeon/radeon_prime.c
> @@ -0,0 +1,176 @@
> +/*
> + * Copyright 2012 Advanced Micro Devices, 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.
> + *
> + * based on nouveau_prime.c
> + *
> + * Authors: Alex Deucher
> + */
> +#include "drmP.h"
> +#include "drm.h"
> +
> +#include "radeon.h"
> +#include "radeon_drm.h"
> +
> +#include <linux/dma-buf.h>
> +
> +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 drm_device *dev = bo->rdev->ddev;
> + 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) {
> + 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)
> +{
> +
> +}
> +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)
> +{
> +
> +}
> +
> +struct dma_buf_ops radeon_dmabuf_ops = {
> + .map_dma_buf = radeon_gem_map_dma_buf,
> + .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,
> +};
> +
> +static int radeon_prime_create(struct drm_device *dev,
> + size_t size,
> + struct sg_table *sg,
> + struct radeon_bo **pbo)
> +{
> + struct radeon_device *rdev = dev->dev_private;
> + struct radeon_bo *bo;
> + int ret;
> +
> + ret = radeon_bo_create(rdev, size, PAGE_SIZE, false,
> + RADEON_GEM_DOMAIN_GTT, sg, pbo);
> + if (ret)
> + return ret;
> + bo = *pbo;
> + bo->gem_base.driver_private = bo;
> +
> + mutex_lock(&rdev->gem.mutex);
> + list_add_tail(&bo->list, &rdev->gem.objects);
> + mutex_unlock(&rdev->gem.mutex);
> +
> + return 0;
> +}
> +
> +struct dma_buf *radeon_gem_prime_export(struct drm_device *dev,
> + struct drm_gem_object *obj,
> + int flags)
> +{
> + struct radeon_bo *bo = gem_to_radeon_bo(obj);
> + int ret = 0;
> +
> + /* pin buffer into GTT */
> + ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL);
> + if (ret)
> + return ERR_PTR(ret);
> +
> + return dma_buf_export(bo, &radeon_dmabuf_ops, obj->size, flags);
> +}
> +
> +struct drm_gem_object *radeon_gem_prime_import(struct drm_device *dev,
> + 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);
> + 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);
> +}
> diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
> index a5dee76..493a7be 100644
> --- a/drivers/gpu/drm/radeon/radeon_ring.c
> +++ b/drivers/gpu/drm/radeon/radeon_ring.c
> @@ -390,8 +390,8 @@ int radeon_ring_init(struct radeon_device *rdev, struct radeon_ring *ring, unsig
> /* Allocate ring buffer */
> if (ring->ring_obj == NULL) {
> r = radeon_bo_create(rdev, ring->ring_size, PAGE_SIZE, true,
> - RADEON_GEM_DOMAIN_GTT,
> - &ring->ring_obj);
> + RADEON_GEM_DOMAIN_GTT,
> + NULL, &ring->ring_obj);
> if (r) {
> dev_err(rdev->dev, "(%d) ring create failed\n", r);
> return r;
> diff --git a/drivers/gpu/drm/radeon/radeon_sa.c b/drivers/gpu/drm/radeon/radeon_sa.c
> index c3ac7f4..32059b7 100644
> --- a/drivers/gpu/drm/radeon/radeon_sa.c
> +++ b/drivers/gpu/drm/radeon/radeon_sa.c
> @@ -65,7 +65,7 @@ int radeon_sa_bo_manager_init(struct radeon_device *rdev,
> }
>
> r = radeon_bo_create(rdev, size, RADEON_GPU_PAGE_SIZE, true,
> - RADEON_GEM_DOMAIN_CPU, &sa_manager->bo);
> + RADEON_GEM_DOMAIN_CPU, NULL, &sa_manager->bo);
> if (r) {
> dev_err(rdev->dev, "(%d) failed to allocate bo for manager\n", r);
> return r;
> diff --git a/drivers/gpu/drm/radeon/radeon_test.c b/drivers/gpu/drm/radeon/radeon_test.c
> index b057387..efff929 100644
> --- a/drivers/gpu/drm/radeon/radeon_test.c
> +++ b/drivers/gpu/drm/radeon/radeon_test.c
> @@ -59,7 +59,7 @@ void radeon_test_moves(struct radeon_device *rdev)
> }
>
> r = radeon_bo_create(rdev, size, PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
> - &vram_obj);
> + NULL, &vram_obj);
> if (r) {
> DRM_ERROR("Failed to create VRAM object\n");
> goto out_cleanup;
> @@ -78,7 +78,7 @@ void radeon_test_moves(struct radeon_device *rdev)
> void **vram_start, **vram_end;
>
> r = radeon_bo_create(rdev, size, PAGE_SIZE, true,
> - RADEON_GEM_DOMAIN_GTT, gtt_obj + i);
> + RADEON_GEM_DOMAIN_GTT, NULL, gtt_obj + i);
> if (r) {
> DRM_ERROR("Failed to create GTT object %d\n", i);
> goto out_cleanup;
> diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
> index 0f6aee8..c94a225 100644
> --- a/drivers/gpu/drm/radeon/radeon_ttm.c
> +++ b/drivers/gpu/drm/radeon/radeon_ttm.c
> @@ -611,10 +611,18 @@ static int radeon_ttm_tt_populate(struct ttm_tt *ttm)
> struct radeon_ttm_tt *gtt = (void *)ttm;
> unsigned i;
> int r;
> + bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
>
> if (ttm->state != tt_unpopulated)
> return 0;
>
> + if (slave && ttm->sg) {
> + drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages,
> + gtt->ttm.dma_address, ttm->num_pages);
> + ttm->state = tt_unbound;
> + return 0;
> + }
> +
> rdev = radeon_get_rdev(ttm->bdev);
> #if __OS_HAS_AGP
> if (rdev->flags & RADEON_IS_AGP) {
> @@ -655,6 +663,10 @@ static void radeon_ttm_tt_unpopulate(struct ttm_tt *ttm)
> struct radeon_device *rdev;
> struct radeon_ttm_tt *gtt = (void *)ttm;
> unsigned i;
> + bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
> +
> + if (slave)
> + return;
>
> rdev = radeon_get_rdev(ttm->bdev);
> #if __OS_HAS_AGP
> @@ -726,8 +738,8 @@ int radeon_ttm_init(struct radeon_device *rdev)
> return r;
> }
> r = radeon_bo_create(rdev, 256 * 1024, PAGE_SIZE, true,
> - RADEON_GEM_DOMAIN_VRAM,
> - &rdev->stollen_vga_memory);
> + RADEON_GEM_DOMAIN_VRAM,
> + NULL, &rdev->stollen_vga_memory);
> if (r) {
> return r;
> }
> diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
> index 63ae41d..549732e 100644
> --- a/drivers/gpu/drm/radeon/si.c
> +++ b/drivers/gpu/drm/radeon/si.c
> @@ -2976,7 +2976,8 @@ int si_rlc_init(struct radeon_device *rdev)
> /* save restore block */
> if (rdev->rlc.save_restore_obj == NULL) {
> r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
> - RADEON_GEM_DOMAIN_VRAM, &rdev->rlc.save_restore_obj);
> + RADEON_GEM_DOMAIN_VRAM, NULL,
> + &rdev->rlc.save_restore_obj);
> if (r) {
> dev_warn(rdev->dev, "(%d) create RLC sr bo failed\n", r);
> return r;
> @@ -3000,7 +3001,8 @@ int si_rlc_init(struct radeon_device *rdev)
> /* clear state block */
> if (rdev->rlc.clear_state_obj == NULL) {
> r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
> - RADEON_GEM_DOMAIN_VRAM, &rdev->rlc.clear_state_obj);
> + RADEON_GEM_DOMAIN_VRAM, NULL,
> + &rdev->rlc.clear_state_obj);
> if (r) {
> dev_warn(rdev->dev, "(%d) create RLC c bo failed\n", r);
> si_rlc_fini(rdev);
> --
> 1.7.6
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 15+ messages in thread* Re: [PATCH 7/7] drm/radeon: add PRIME support (v2)
2012-05-22 12:50 ` [PATCH 7/7] drm/radeon: add PRIME support (v2) Dave Airlie
2012-05-22 20:56 ` Jerome Glisse
@ 2012-05-22 21:09 ` Alex Deucher
1 sibling, 0 replies; 15+ messages in thread
From: Alex Deucher @ 2012-05-22 21:09 UTC (permalink / raw)
To: Dave Airlie; +Cc: dri-devel
On Tue, May 22, 2012 at 8:50 AM, Dave Airlie <airlied@gmail.com> wrote:
> From: Alex Deucher <alexander.deucher@amd.com>
>
> This adds prime->fd and fd->prime support to radeon.
> It passes the sg object to ttm and then populates
> the gart entries using it.
>
> Compile tested only.
>
> v2: stub kmap + use new helpers + add reimporting
>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
> ---
> drivers/gpu/drm/radeon/Makefile | 2 +-
> drivers/gpu/drm/radeon/evergreen_blit_kms.c | 2 +-
> drivers/gpu/drm/radeon/r600.c | 4 +-
> drivers/gpu/drm/radeon/r600_blit_kms.c | 2 +-
> drivers/gpu/drm/radeon/radeon_benchmark.c | 4 +-
> drivers/gpu/drm/radeon/radeon_device.c | 2 +-
> drivers/gpu/drm/radeon/radeon_drv.c | 14 ++-
> drivers/gpu/drm/radeon/radeon_gart.c | 2 +-
> drivers/gpu/drm/radeon/radeon_gem.c | 4 +-
> drivers/gpu/drm/radeon/radeon_object.c | 6 +-
> drivers/gpu/drm/radeon/radeon_object.h | 7 +-
> drivers/gpu/drm/radeon/radeon_prime.c | 176 +++++++++++++++++++++++++++
> drivers/gpu/drm/radeon/radeon_ring.c | 4 +-
> drivers/gpu/drm/radeon/radeon_sa.c | 2 +-
> drivers/gpu/drm/radeon/radeon_test.c | 4 +-
> drivers/gpu/drm/radeon/radeon_ttm.c | 16 ++-
> drivers/gpu/drm/radeon/si.c | 6 +-
> 17 files changed, 232 insertions(+), 25 deletions(-)
> create mode 100644 drivers/gpu/drm/radeon/radeon_prime.c
>
> diff --git a/drivers/gpu/drm/radeon/Makefile b/drivers/gpu/drm/radeon/Makefile
> index 1efb6eb..a6598fd 100644
> --- a/drivers/gpu/drm/radeon/Makefile
> +++ b/drivers/gpu/drm/radeon/Makefile
> @@ -72,7 +72,7 @@ radeon-y += radeon_device.o radeon_asic.o radeon_kms.o \
> evergreen.o evergreen_cs.o evergreen_blit_shaders.o evergreen_blit_kms.o \
> evergreen_hdmi.o radeon_trace_points.o ni.o cayman_blit_shaders.o \
> atombios_encoders.o radeon_semaphore.o radeon_sa.o atombios_i2c.o si.o \
> - si_blit_shaders.o
> + si_blit_shaders.o radeon_prime.o
>
> radeon-$(CONFIG_COMPAT) += radeon_ioc32.o
> radeon-$(CONFIG_VGA_SWITCHEROO) += radeon_atpx_handler.o
> diff --git a/drivers/gpu/drm/radeon/evergreen_blit_kms.c b/drivers/gpu/drm/radeon/evergreen_blit_kms.c
> index 30f0480..1e96bd4 100644
> --- a/drivers/gpu/drm/radeon/evergreen_blit_kms.c
> +++ b/drivers/gpu/drm/radeon/evergreen_blit_kms.c
> @@ -668,7 +668,7 @@ int evergreen_blit_init(struct radeon_device *rdev)
> obj_size = ALIGN(obj_size, 256);
>
> r = radeon_bo_create(rdev, obj_size, PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
> - &rdev->r600_blit.shader_obj);
> + NULL, &rdev->r600_blit.shader_obj);
> if (r) {
> DRM_ERROR("evergreen failed to allocate shader\n");
> return r;
> diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
> index ab5d6f2..f388a1d 100644
> --- a/drivers/gpu/drm/radeon/r600.c
> +++ b/drivers/gpu/drm/radeon/r600.c
> @@ -1231,7 +1231,7 @@ int r600_vram_scratch_init(struct radeon_device *rdev)
> if (rdev->vram_scratch.robj == NULL) {
> r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE,
> PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
> - &rdev->vram_scratch.robj);
> + NULL, &rdev->vram_scratch.robj);
> if (r) {
> return r;
> }
> @@ -2769,7 +2769,7 @@ int r600_ih_ring_alloc(struct radeon_device *rdev)
> r = radeon_bo_create(rdev, rdev->ih.ring_size,
> PAGE_SIZE, true,
> RADEON_GEM_DOMAIN_GTT,
> - &rdev->ih.ring_obj);
> + NULL, &rdev->ih.ring_obj);
> if (r) {
> DRM_ERROR("radeon: failed to create ih ring buffer (%d).\n", r);
> return r;
> diff --git a/drivers/gpu/drm/radeon/r600_blit_kms.c b/drivers/gpu/drm/radeon/r600_blit_kms.c
> index ef20822..03b6e0d 100644
> --- a/drivers/gpu/drm/radeon/r600_blit_kms.c
> +++ b/drivers/gpu/drm/radeon/r600_blit_kms.c
> @@ -552,7 +552,7 @@ int r600_blit_init(struct radeon_device *rdev)
> obj_size = ALIGN(obj_size, 256);
>
> r = radeon_bo_create(rdev, obj_size, PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
> - &rdev->r600_blit.shader_obj);
> + NULL, &rdev->r600_blit.shader_obj);
> if (r) {
> DRM_ERROR("r600 failed to allocate shader\n");
> return r;
> diff --git a/drivers/gpu/drm/radeon/radeon_benchmark.c b/drivers/gpu/drm/radeon/radeon_benchmark.c
> index fef7b72..364f5b1 100644
> --- a/drivers/gpu/drm/radeon/radeon_benchmark.c
> +++ b/drivers/gpu/drm/radeon/radeon_benchmark.c
> @@ -103,7 +103,7 @@ static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size,
> int time;
>
> n = RADEON_BENCHMARK_ITERATIONS;
> - r = radeon_bo_create(rdev, size, PAGE_SIZE, true, sdomain, &sobj);
> + r = radeon_bo_create(rdev, size, PAGE_SIZE, true, sdomain, NULL, &sobj);
> if (r) {
> goto out_cleanup;
> }
> @@ -115,7 +115,7 @@ static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size,
> if (r) {
> goto out_cleanup;
> }
> - r = radeon_bo_create(rdev, size, PAGE_SIZE, true, ddomain, &dobj);
> + r = radeon_bo_create(rdev, size, PAGE_SIZE, true, ddomain, NULL, &dobj);
> if (r) {
> goto out_cleanup;
> }
> diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
> index 5763701..066c98b 100644
> --- a/drivers/gpu/drm/radeon/radeon_device.c
> +++ b/drivers/gpu/drm/radeon/radeon_device.c
> @@ -193,7 +193,7 @@ int radeon_wb_init(struct radeon_device *rdev)
>
> if (rdev->wb.wb_obj == NULL) {
> r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
> - RADEON_GEM_DOMAIN_GTT, &rdev->wb.wb_obj);
> + RADEON_GEM_DOMAIN_GTT, NULL, &rdev->wb.wb_obj);
> if (r) {
> dev_warn(rdev->dev, "(%d) create WB bo failed\n", r);
> return r;
> diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
> index e62e56a..f0bb2b5 100644
> --- a/drivers/gpu/drm/radeon/radeon_drv.c
> +++ b/drivers/gpu/drm/radeon/radeon_drv.c
> @@ -105,6 +105,11 @@ int radeon_mode_dumb_create(struct drm_file *file_priv,
> int radeon_mode_dumb_destroy(struct drm_file *file_priv,
> struct drm_device *dev,
> uint32_t handle);
> +struct dma_buf *radeon_gem_prime_export(struct drm_device *dev,
> + struct drm_gem_object *obj,
> + int flags);
> +struct drm_gem_object *radeon_gem_prime_import(struct drm_device *dev,
> + struct dma_buf *dma_buf);
>
> #if defined(CONFIG_DEBUG_FS)
> int radeon_debugfs_init(struct drm_minor *minor);
> @@ -333,7 +338,8 @@ static const struct file_operations radeon_driver_kms_fops = {
> static struct drm_driver kms_driver = {
> .driver_features =
> DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
> - DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED | DRIVER_GEM,
> + DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED | DRIVER_GEM |
> + DRIVER_PRIME,
> .dev_priv_size = 0,
> .load = radeon_driver_load_kms,
> .firstopen = radeon_driver_firstopen_kms,
> @@ -368,6 +374,12 @@ static struct drm_driver kms_driver = {
> .dumb_map_offset = radeon_mode_dumb_mmap,
> .dumb_destroy = radeon_mode_dumb_destroy,
> .fops = &radeon_driver_kms_fops,
> +
> + .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
> + .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
> + .gem_prime_export = radeon_gem_prime_export,
> + .gem_prime_import = radeon_gem_prime_import,
> +
> .name = DRIVER_NAME,
> .desc = DRIVER_DESC,
> .date = DRIVER_DATE,
> diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c
> index 8e9ef34..4fa5402 100644
> --- a/drivers/gpu/drm/radeon/radeon_gart.c
> +++ b/drivers/gpu/drm/radeon/radeon_gart.c
> @@ -80,7 +80,7 @@ int radeon_gart_table_vram_alloc(struct radeon_device *rdev)
> if (rdev->gart.robj == NULL) {
> r = radeon_bo_create(rdev, rdev->gart.table_size,
> PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
> - &rdev->gart.robj);
> + NULL, &rdev->gart.robj);
> if (r) {
> return r;
> }
> diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
> index e15cb1f..c0130b0 100644
> --- a/drivers/gpu/drm/radeon/radeon_gem.c
> +++ b/drivers/gpu/drm/radeon/radeon_gem.c
> @@ -42,6 +42,8 @@ void radeon_gem_object_free(struct drm_gem_object *gobj)
> struct radeon_bo *robj = gem_to_radeon_bo(gobj);
>
> if (robj) {
> + if (robj->gem_base.import_attach)
> + drm_prime_gem_destroy(&robj->gem_base, robj->tbo.sg);
> radeon_bo_unref(&robj);
> }
> }
> @@ -59,7 +61,7 @@ int radeon_gem_object_create(struct radeon_device *rdev, int size,
> if (alignment < PAGE_SIZE) {
> alignment = PAGE_SIZE;
> }
> - r = radeon_bo_create(rdev, size, alignment, kernel, initial_domain, &robj);
> + r = radeon_bo_create(rdev, size, alignment, kernel, initial_domain, NULL, &robj);
> if (r) {
> if (r != -ERESTARTSYS)
> DRM_ERROR("Failed to allocate GEM object (%d, %d, %u, %d)\n",
> diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
> index 1affbc9..830f1a7 100644
> --- a/drivers/gpu/drm/radeon/radeon_object.c
> +++ b/drivers/gpu/drm/radeon/radeon_object.c
> @@ -104,7 +104,7 @@ void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain)
>
> int radeon_bo_create(struct radeon_device *rdev,
> unsigned long size, int byte_align, bool kernel, u32 domain,
> - struct radeon_bo **bo_ptr)
> + struct sg_table *sg, struct radeon_bo **bo_ptr)
> {
> struct radeon_bo *bo;
> enum ttm_bo_type type;
> @@ -120,6 +120,8 @@ int radeon_bo_create(struct radeon_device *rdev,
> }
> if (kernel) {
> type = ttm_bo_type_kernel;
> + } else if (sg) {
> + type = ttm_bo_type_sg;
> } else {
> type = ttm_bo_type_device;
> }
> @@ -155,7 +157,7 @@ retry:
> mutex_lock(&rdev->vram_mutex);
> r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type,
> &bo->placement, page_align, 0, !kernel, NULL,
> - acc_size, NULL, &radeon_ttm_bo_destroy);
> + acc_size, sg, &radeon_ttm_bo_destroy);
> mutex_unlock(&rdev->vram_mutex);
> if (unlikely(r != 0)) {
> if (r != -ERESTARTSYS) {
> diff --git a/drivers/gpu/drm/radeon/radeon_object.h b/drivers/gpu/drm/radeon/radeon_object.h
> index befec7d..17fb99f 100644
> --- a/drivers/gpu/drm/radeon/radeon_object.h
> +++ b/drivers/gpu/drm/radeon/radeon_object.h
> @@ -111,9 +111,10 @@ extern int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type,
> bool no_wait);
>
> extern int radeon_bo_create(struct radeon_device *rdev,
> - unsigned long size, int byte_align,
> - bool kernel, u32 domain,
> - struct radeon_bo **bo_ptr);
> + unsigned long size, int byte_align,
> + bool kernel, u32 domain,
> + struct sg_table *sg,
> + struct radeon_bo **bo_ptr);
> extern int radeon_bo_kmap(struct radeon_bo *bo, void **ptr);
> extern void radeon_bo_kunmap(struct radeon_bo *bo);
> extern void radeon_bo_unref(struct radeon_bo **bo);
> diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c
> new file mode 100644
> index 0000000..24f5175
> --- /dev/null
> +++ b/drivers/gpu/drm/radeon/radeon_prime.c
> @@ -0,0 +1,176 @@
> +/*
> + * Copyright 2012 Advanced Micro Devices, 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.
> + *
> + * based on nouveau_prime.c
> + *
> + * Authors: Alex Deucher
> + */
> +#include "drmP.h"
> +#include "drm.h"
> +
> +#include "radeon.h"
> +#include "radeon_drm.h"
> +
> +#include <linux/dma-buf.h>
> +
> +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 drm_device *dev = bo->rdev->ddev;
> + 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) {
> + 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)
> +{
> +
> +}
> +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)
> +{
> +
> +}
> +
> +struct dma_buf_ops radeon_dmabuf_ops = {
> + .map_dma_buf = radeon_gem_map_dma_buf,
> + .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,
> +};
> +
> +static int radeon_prime_create(struct drm_device *dev,
> + size_t size,
> + struct sg_table *sg,
> + struct radeon_bo **pbo)
> +{
> + struct radeon_device *rdev = dev->dev_private;
> + struct radeon_bo *bo;
> + int ret;
> +
> + ret = radeon_bo_create(rdev, size, PAGE_SIZE, false,
> + RADEON_GEM_DOMAIN_GTT, sg, pbo);
> + if (ret)
> + return ret;
> + bo = *pbo;
> + bo->gem_base.driver_private = bo;
> +
> + mutex_lock(&rdev->gem.mutex);
> + list_add_tail(&bo->list, &rdev->gem.objects);
> + mutex_unlock(&rdev->gem.mutex);
> +
> + return 0;
> +}
> +
> +struct dma_buf *radeon_gem_prime_export(struct drm_device *dev,
> + struct drm_gem_object *obj,
> + int flags)
> +{
> + struct radeon_bo *bo = gem_to_radeon_bo(obj);
> + int ret = 0;
> +
> + /* pin buffer into GTT */
> + ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL);
> + if (ret)
> + return ERR_PTR(ret);
> +
> + return dma_buf_export(bo, &radeon_dmabuf_ops, obj->size, flags);
> +}
> +
> +struct drm_gem_object *radeon_gem_prime_import(struct drm_device *dev,
> + 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);
> + 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);
> +}
> diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
> index a5dee76..493a7be 100644
> --- a/drivers/gpu/drm/radeon/radeon_ring.c
> +++ b/drivers/gpu/drm/radeon/radeon_ring.c
> @@ -390,8 +390,8 @@ int radeon_ring_init(struct radeon_device *rdev, struct radeon_ring *ring, unsig
> /* Allocate ring buffer */
> if (ring->ring_obj == NULL) {
> r = radeon_bo_create(rdev, ring->ring_size, PAGE_SIZE, true,
> - RADEON_GEM_DOMAIN_GTT,
> - &ring->ring_obj);
> + RADEON_GEM_DOMAIN_GTT,
> + NULL, &ring->ring_obj);
> if (r) {
> dev_err(rdev->dev, "(%d) ring create failed\n", r);
> return r;
> diff --git a/drivers/gpu/drm/radeon/radeon_sa.c b/drivers/gpu/drm/radeon/radeon_sa.c
> index c3ac7f4..32059b7 100644
> --- a/drivers/gpu/drm/radeon/radeon_sa.c
> +++ b/drivers/gpu/drm/radeon/radeon_sa.c
> @@ -65,7 +65,7 @@ int radeon_sa_bo_manager_init(struct radeon_device *rdev,
> }
>
> r = radeon_bo_create(rdev, size, RADEON_GPU_PAGE_SIZE, true,
> - RADEON_GEM_DOMAIN_CPU, &sa_manager->bo);
> + RADEON_GEM_DOMAIN_CPU, NULL, &sa_manager->bo);
> if (r) {
> dev_err(rdev->dev, "(%d) failed to allocate bo for manager\n", r);
> return r;
> diff --git a/drivers/gpu/drm/radeon/radeon_test.c b/drivers/gpu/drm/radeon/radeon_test.c
> index b057387..efff929 100644
> --- a/drivers/gpu/drm/radeon/radeon_test.c
> +++ b/drivers/gpu/drm/radeon/radeon_test.c
> @@ -59,7 +59,7 @@ void radeon_test_moves(struct radeon_device *rdev)
> }
>
> r = radeon_bo_create(rdev, size, PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
> - &vram_obj);
> + NULL, &vram_obj);
> if (r) {
> DRM_ERROR("Failed to create VRAM object\n");
> goto out_cleanup;
> @@ -78,7 +78,7 @@ void radeon_test_moves(struct radeon_device *rdev)
> void **vram_start, **vram_end;
>
> r = radeon_bo_create(rdev, size, PAGE_SIZE, true,
> - RADEON_GEM_DOMAIN_GTT, gtt_obj + i);
> + RADEON_GEM_DOMAIN_GTT, NULL, gtt_obj + i);
> if (r) {
> DRM_ERROR("Failed to create GTT object %d\n", i);
> goto out_cleanup;
> diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
> index 0f6aee8..c94a225 100644
> --- a/drivers/gpu/drm/radeon/radeon_ttm.c
> +++ b/drivers/gpu/drm/radeon/radeon_ttm.c
> @@ -611,10 +611,18 @@ static int radeon_ttm_tt_populate(struct ttm_tt *ttm)
> struct radeon_ttm_tt *gtt = (void *)ttm;
> unsigned i;
> int r;
> + bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
>
> if (ttm->state != tt_unpopulated)
> return 0;
>
> + if (slave && ttm->sg) {
> + drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages,
> + gtt->ttm.dma_address, ttm->num_pages);
> + ttm->state = tt_unbound;
> + return 0;
> + }
> +
> rdev = radeon_get_rdev(ttm->bdev);
> #if __OS_HAS_AGP
> if (rdev->flags & RADEON_IS_AGP) {
> @@ -655,6 +663,10 @@ static void radeon_ttm_tt_unpopulate(struct ttm_tt *ttm)
> struct radeon_device *rdev;
> struct radeon_ttm_tt *gtt = (void *)ttm;
> unsigned i;
> + bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
> +
> + if (slave)
> + return;
>
> rdev = radeon_get_rdev(ttm->bdev);
> #if __OS_HAS_AGP
> @@ -726,8 +738,8 @@ int radeon_ttm_init(struct radeon_device *rdev)
> return r;
> }
> r = radeon_bo_create(rdev, 256 * 1024, PAGE_SIZE, true,
> - RADEON_GEM_DOMAIN_VRAM,
> - &rdev->stollen_vga_memory);
> + RADEON_GEM_DOMAIN_VRAM,
> + NULL, &rdev->stollen_vga_memory);
> if (r) {
> return r;
> }
> diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
> index 63ae41d..549732e 100644
> --- a/drivers/gpu/drm/radeon/si.c
> +++ b/drivers/gpu/drm/radeon/si.c
> @@ -2976,7 +2976,8 @@ int si_rlc_init(struct radeon_device *rdev)
> /* save restore block */
> if (rdev->rlc.save_restore_obj == NULL) {
> r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
> - RADEON_GEM_DOMAIN_VRAM, &rdev->rlc.save_restore_obj);
> + RADEON_GEM_DOMAIN_VRAM, NULL,
> + &rdev->rlc.save_restore_obj);
> if (r) {
> dev_warn(rdev->dev, "(%d) create RLC sr bo failed\n", r);
> return r;
> @@ -3000,7 +3001,8 @@ int si_rlc_init(struct radeon_device *rdev)
> /* clear state block */
> if (rdev->rlc.clear_state_obj == NULL) {
> r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
> - RADEON_GEM_DOMAIN_VRAM, &rdev->rlc.clear_state_obj);
> + RADEON_GEM_DOMAIN_VRAM, NULL,
> + &rdev->rlc.clear_state_obj);
> if (r) {
> dev_warn(rdev->dev, "(%d) create RLC c bo failed\n", r);
> si_rlc_fini(rdev);
> --
> 1.7.6
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH 1/7] drm/prime: introduce sg->pages/addr arrays helper
2012-05-22 12:49 [PATCH 1/7] drm/prime: introduce sg->pages/addr arrays helper Dave Airlie
` (5 preceding siblings ...)
2012-05-22 12:50 ` [PATCH 7/7] drm/radeon: add PRIME support (v2) Dave Airlie
@ 2012-05-22 21:08 ` Alex Deucher
6 siblings, 0 replies; 15+ messages in thread
From: Alex Deucher @ 2012-05-22 21:08 UTC (permalink / raw)
To: Dave Airlie; +Cc: dri-devel
On Tue, May 22, 2012 at 8:49 AM, Dave Airlie <airlied@gmail.com> wrote:
> From: Dave Airlie <airlied@redhat.com>
>
> the ttm drivers need this currently, in order to get fault handling
> working and efficient.
>
> It also allows addrs to be NULL for devices like udl.
>
> Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
> ---
> drivers/gpu/drm/drm_prime.c | 36 ++++++++++++++++++++++++++++++++++++
> include/drm/drmP.h | 2 ++
> 2 files changed, 38 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
> index 1bdf2b5..20dbf2c 100644
> --- a/drivers/gpu/drm/drm_prime.c
> +++ b/drivers/gpu/drm/drm_prime.c
> @@ -227,6 +227,42 @@ out:
> }
> EXPORT_SYMBOL(drm_prime_pages_to_sg);
>
> +/* export an sg table into an array of pages and addresses
> + this is currently required by the TTM driver in order to do correct fault
> + handling */
> +int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
> + dma_addr_t *addrs, int max_pages)
> +{
> + unsigned count;
> + struct scatterlist *sg;
> + struct page *page;
> + u32 len, offset;
> + int pg_index;
> + dma_addr_t addr;
> +
> + pg_index = 0;
> + for_each_sg(sgt->sgl, sg, sgt->nents, count) {
> + len = sg->length;
> + offset = sg->offset;
> + page = sg_page(sg);
> + addr = sg_dma_address(sg);
> +
> + while (len > 0) {
> + if (WARN_ON(pg_index >= max_pages))
> + return -1;
> + pages[pg_index] = page;
> + if (addrs)
> + addrs[pg_index] = addr;
> +
> + page++;
> + addr += PAGE_SIZE;
> + len -= PAGE_SIZE;
> + pg_index++;
> + }
> + }
> + return 0;
> +}
> +EXPORT_SYMBOL(drm_prime_sg_to_page_addr_arrays);
> /* helper function to cleanup a GEM/prime object */
> void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg)
> {
> diff --git a/include/drm/drmP.h b/include/drm/drmP.h
> index 15d9179..31ad880 100644
> --- a/include/drm/drmP.h
> +++ b/include/drm/drmP.h
> @@ -1558,6 +1558,8 @@ extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data,
> extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data,
> struct drm_file *file_priv);
>
> +extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
> + dma_addr_t *addrs, int max_pages);
> extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages);
> extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
>
> --
> 1.7.6
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 15+ messages in thread