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drm/ttm: Enable the dma page pool also for intel IOMMUs

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Used by the vmwgfx driver

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Thomas Hellstrom 2013-10-24 01:24:54 -07:00
parent 4695b03970
commit 7aeb7448d8
3 changed files with 14 additions and 6 deletions
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6
drivers/gpu/drm/ttm/Makefile
View file

@ -5,10 +5,6 @@ ccflags-y := -Iinclude/drm
ttm-y := ttm_agp_backend.o ttm_memory.o ttm_tt.o ttm_bo.o \
ttm_bo_util.o ttm_bo_vm.o ttm_module.o \
ttm_object.o ttm_lock.o ttm_execbuf_util.o ttm_page_alloc.o \
ttm_bo_manager.o
ifeq ($(CONFIG_SWIOTLB),y)
ttm-y += ttm_page_alloc_dma.o
endif
ttm_bo_manager.o ttm_page_alloc_dma.o
obj-$(CONFIG_DRM_TTM) += ttm.o

3
drivers/gpu/drm/ttm/ttm_page_alloc_dma.c
View file

@ -33,6 +33,7 @@
* when freed).
*/
#if defined(CONFIG_SWIOTLB) || defined(CONFIG_INTEL_IOMMU)
#define pr_fmt(fmt) "[TTM] " fmt
#include <linux/dma-mapping.h>
@ -1142,3 +1143,5 @@ int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data)
return 0;
}
EXPORT_SYMBOL_GPL(ttm_dma_page_alloc_debugfs);
#endif

11
include/drm/ttm/ttm_page_alloc.h
View file

@ -62,7 +62,7 @@ extern void ttm_pool_unpopulate(struct ttm_tt *ttm);
extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data);
#ifdef CONFIG_SWIOTLB
#if defined(CONFIG_SWIOTLB) || defined(CONFIG_INTEL_IOMMU)
/**
* Initialize pool allocator.
*/
@ -94,6 +94,15 @@ static inline int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data)
{
return 0;
}
static inline int ttm_dma_populate(struct ttm_dma_tt *ttm_dma,
struct device *dev)
{
return -ENOMEM;
}
static inline void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma,
struct device *dev)
{
}
#endif
#endif