[PATCH 2/2] ttm: Pass in 'struct device' to TTM so it can do DMA API on behalf of device.

Konrad Rzeszutek Wilk
2011-03-08T15:41:09Z

We want to pass in the 'struct device' to the TTM layer in a nice way.
This is not strictly required, but it does make accounting of
pages and their DMA addresses correct when using CONFIG_DMA_API_DEBUG=y.

This patch builds on top of "ttm: Include the 'struct dev' when using the DMA API."
and moves the mechanism of passing in 'struct device' to the TTM API.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
drivers/gpu/drm/nouveau/nouveau_mem.c | 4 ++--
drivers/gpu/drm/radeon/radeon_ttm.c | 4 ++--
drivers/gpu/drm/ttm/ttm_bo.c | 4 +++-
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 4 ++--
include/drm/ttm/ttm_bo_driver.h | 5 ++++-
5 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c
index 7b57067..3706156 100644
--- a/drivers/gpu/drm/nouveau/nouveau_mem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_mem.c
@@ -409,11 +409,11 @@ nouveau_mem_vram_init(struct drm_device *dev)
if (ret)
return ret;

- dev_priv->ttm.bdev.dev = dev->dev;
ret = ttm_bo_device_init(&dev_priv->ttm.bdev,
dev_priv->ttm.bo_global_ref.ref.object,
&nouveau_bo_driver, DRM_FILE_PAGE_OFFSET,
- dma_bits <= 32 ? true : false);
+ dma_bits <= 32 ? true : false,
+ dev->dev);
if (ret) {
NV_ERROR(dev, "Error initialising bo driver: %d\n", ret);
return ret;
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index d19bfcf..371890c 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -513,12 +513,12 @@ int radeon_ttm_init(struct radeon_device *rdev)
if (r) {
return r;
}
- rdev->mman.bdev.dev = rdev->dev;
/* No others user of address space so set it to 0 */
r = ttm_bo_device_init(&rdev->mman.bdev,
rdev->mman.bo_global_ref.ref.object,
&radeon_bo_driver, DRM_FILE_PAGE_OFFSET,
- rdev->need_dma32);
+ rdev->need_dma32,
+ rdev->dev);
if (r) {
DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
return r;
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index af61fc2..278a2d3 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1526,12 +1526,14 @@ int ttm_bo_device_init(struct ttm_bo_device *bdev,
struct ttm_bo_global *glob,
struct ttm_bo_driver *driver,
uint64_t file_page_offset,
- bool need_dma32)
+ bool need_dma32,
+ struct device *dev)
{
int ret = -EINVAL;

rwlock_init(&bdev->vm_lock);
bdev->driver = driver;
+ bdev->dev = dev;

memset(bdev->man, 0, sizeof(bdev->man));

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 4a8c789..803d979 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -322,11 +322,11 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
dev_priv->active_master = &dev_priv->fbdev_master;

- dev_priv->bdev.dev = dev->dev;
ret = ttm_bo_device_init(&dev_priv->bdev,
dev_priv->bo_global_ref.ref.object,
&vmw_bo_driver, VMWGFX_FILE_PAGE_OFFSET,
- false);
+ false,
+ dev->dev);
if (unlikely(ret != 0)) {
DRM_ERROR("Failed initializing TTM buffer object driver.\n");
goto out_err1;
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index 7589c0a..2024a74 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -793,6 +793,8 @@ extern int ttm_bo_device_release(struct ttm_bo_device *bdev);
* @file_page_offset: Offset into the device address space that is available
* for buffer data. This ensures compatibility with other users of the
* address space.
+ * @need_dma32: Allocate pages under 4GB
+ * @dev: 'struct device' of the PCI device.
*
* Initializes a struct ttm_bo_device:
* Returns:
@@ -801,7 +803,8 @@ extern int ttm_bo_device_release(struct ttm_bo_device *bdev);
extern int ttm_bo_device_init(struct ttm_bo_device *bdev,
struct ttm_bo_global *glob,
struct ttm_bo_driver *driver,
- uint64_t file_page_offset, bool need_dma32);
+ uint64_t file_page_offset, bool need_dma32,
+ struct device *dev);

/**
* ttm_bo_unmap_virtual
--
1.7.1