Merge branch 'linus' into core/iommu
diff --git a/arch/ia64/dig/Makefile b/arch/ia64/dig/Makefile
index 5c02838..2f7cadd 100644
--- a/arch/ia64/dig/Makefile
+++ b/arch/ia64/dig/Makefile
@@ -7,8 +7,8 @@
obj-y := setup.o
ifeq ($(CONFIG_DMAR), y)
-obj-$(CONFIG_IA64_GENERIC) += machvec.o machvec_vtd.o dig_vtd_iommu.o
+obj-$(CONFIG_IA64_GENERIC) += machvec.o machvec_vtd.o
else
obj-$(CONFIG_IA64_GENERIC) += machvec.o
endif
-obj-$(CONFIG_IA64_DIG_VTD) += dig_vtd_iommu.o
+
diff --git a/arch/ia64/dig/dig_vtd_iommu.c b/arch/ia64/dig/dig_vtd_iommu.c
deleted file mode 100644
index 1c8a079..0000000
--- a/arch/ia64/dig/dig_vtd_iommu.c
+++ /dev/null
@@ -1,59 +0,0 @@
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/intel-iommu.h>
-
-void *
-vtd_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
- gfp_t flags)
-{
- return intel_alloc_coherent(dev, size, dma_handle, flags);
-}
-EXPORT_SYMBOL_GPL(vtd_alloc_coherent);
-
-void
-vtd_free_coherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle)
-{
- intel_free_coherent(dev, size, vaddr, dma_handle);
-}
-EXPORT_SYMBOL_GPL(vtd_free_coherent);
-
-dma_addr_t
-vtd_map_single_attrs(struct device *dev, void *addr, size_t size,
- int dir, struct dma_attrs *attrs)
-{
- return intel_map_single(dev, (phys_addr_t)addr, size, dir);
-}
-EXPORT_SYMBOL_GPL(vtd_map_single_attrs);
-
-void
-vtd_unmap_single_attrs(struct device *dev, dma_addr_t iova, size_t size,
- int dir, struct dma_attrs *attrs)
-{
- intel_unmap_single(dev, iova, size, dir);
-}
-EXPORT_SYMBOL_GPL(vtd_unmap_single_attrs);
-
-int
-vtd_map_sg_attrs(struct device *dev, struct scatterlist *sglist, int nents,
- int dir, struct dma_attrs *attrs)
-{
- return intel_map_sg(dev, sglist, nents, dir);
-}
-EXPORT_SYMBOL_GPL(vtd_map_sg_attrs);
-
-void
-vtd_unmap_sg_attrs(struct device *dev, struct scatterlist *sglist,
- int nents, int dir, struct dma_attrs *attrs)
-{
- intel_unmap_sg(dev, sglist, nents, dir);
-}
-EXPORT_SYMBOL_GPL(vtd_unmap_sg_attrs);
-
-int
-vtd_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- return 0;
-}
-EXPORT_SYMBOL_GPL(vtd_dma_mapping_error);
diff --git a/arch/ia64/hp/common/hwsw_iommu.c b/arch/ia64/hp/common/hwsw_iommu.c
index 2769dbf..e4a80d8 100644
--- a/arch/ia64/hp/common/hwsw_iommu.c
+++ b/arch/ia64/hp/common/hwsw_iommu.c
@@ -13,49 +13,34 @@
*/
#include <linux/device.h>
+#include <linux/dma-mapping.h>
#include <linux/swiotlb.h>
-
#include <asm/machvec.h>
+extern struct dma_map_ops sba_dma_ops, swiotlb_dma_ops;
+
/* swiotlb declarations & definitions: */
extern int swiotlb_late_init_with_default_size (size_t size);
-/* hwiommu declarations & definitions: */
-
-extern ia64_mv_dma_alloc_coherent sba_alloc_coherent;
-extern ia64_mv_dma_free_coherent sba_free_coherent;
-extern ia64_mv_dma_map_single_attrs sba_map_single_attrs;
-extern ia64_mv_dma_unmap_single_attrs sba_unmap_single_attrs;
-extern ia64_mv_dma_map_sg_attrs sba_map_sg_attrs;
-extern ia64_mv_dma_unmap_sg_attrs sba_unmap_sg_attrs;
-extern ia64_mv_dma_supported sba_dma_supported;
-extern ia64_mv_dma_mapping_error sba_dma_mapping_error;
-
-#define hwiommu_alloc_coherent sba_alloc_coherent
-#define hwiommu_free_coherent sba_free_coherent
-#define hwiommu_map_single_attrs sba_map_single_attrs
-#define hwiommu_unmap_single_attrs sba_unmap_single_attrs
-#define hwiommu_map_sg_attrs sba_map_sg_attrs
-#define hwiommu_unmap_sg_attrs sba_unmap_sg_attrs
-#define hwiommu_dma_supported sba_dma_supported
-#define hwiommu_dma_mapping_error sba_dma_mapping_error
-#define hwiommu_sync_single_for_cpu machvec_dma_sync_single
-#define hwiommu_sync_sg_for_cpu machvec_dma_sync_sg
-#define hwiommu_sync_single_for_device machvec_dma_sync_single
-#define hwiommu_sync_sg_for_device machvec_dma_sync_sg
-
-
/*
* Note: we need to make the determination of whether or not to use
* the sw I/O TLB based purely on the device structure. Anything else
* would be unreliable or would be too intrusive.
*/
-static inline int
-use_swiotlb (struct device *dev)
+static inline int use_swiotlb(struct device *dev)
{
- return dev && dev->dma_mask && !hwiommu_dma_supported(dev, *dev->dma_mask);
+ return dev && dev->dma_mask &&
+ !sba_dma_ops.dma_supported(dev, *dev->dma_mask);
}
+struct dma_map_ops *hwsw_dma_get_ops(struct device *dev)
+{
+ if (use_swiotlb(dev))
+ return &swiotlb_dma_ops;
+ return &sba_dma_ops;
+}
+EXPORT_SYMBOL(hwsw_dma_get_ops);
+
void __init
hwsw_init (void)
{
@@ -71,125 +56,3 @@
#endif
}
}
-
-void *
-hwsw_alloc_coherent (struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flags)
-{
- if (use_swiotlb(dev))
- return swiotlb_alloc_coherent(dev, size, dma_handle, flags);
- else
- return hwiommu_alloc_coherent(dev, size, dma_handle, flags);
-}
-
-void
-hwsw_free_coherent (struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle)
-{
- if (use_swiotlb(dev))
- swiotlb_free_coherent(dev, size, vaddr, dma_handle);
- else
- hwiommu_free_coherent(dev, size, vaddr, dma_handle);
-}
-
-dma_addr_t
-hwsw_map_single_attrs(struct device *dev, void *addr, size_t size, int dir,
- struct dma_attrs *attrs)
-{
- if (use_swiotlb(dev))
- return swiotlb_map_single_attrs(dev, addr, size, dir, attrs);
- else
- return hwiommu_map_single_attrs(dev, addr, size, dir, attrs);
-}
-EXPORT_SYMBOL(hwsw_map_single_attrs);
-
-void
-hwsw_unmap_single_attrs(struct device *dev, dma_addr_t iova, size_t size,
- int dir, struct dma_attrs *attrs)
-{
- if (use_swiotlb(dev))
- return swiotlb_unmap_single_attrs(dev, iova, size, dir, attrs);
- else
- return hwiommu_unmap_single_attrs(dev, iova, size, dir, attrs);
-}
-EXPORT_SYMBOL(hwsw_unmap_single_attrs);
-
-int
-hwsw_map_sg_attrs(struct device *dev, struct scatterlist *sglist, int nents,
- int dir, struct dma_attrs *attrs)
-{
- if (use_swiotlb(dev))
- return swiotlb_map_sg_attrs(dev, sglist, nents, dir, attrs);
- else
- return hwiommu_map_sg_attrs(dev, sglist, nents, dir, attrs);
-}
-EXPORT_SYMBOL(hwsw_map_sg_attrs);
-
-void
-hwsw_unmap_sg_attrs(struct device *dev, struct scatterlist *sglist, int nents,
- int dir, struct dma_attrs *attrs)
-{
- if (use_swiotlb(dev))
- return swiotlb_unmap_sg_attrs(dev, sglist, nents, dir, attrs);
- else
- return hwiommu_unmap_sg_attrs(dev, sglist, nents, dir, attrs);
-}
-EXPORT_SYMBOL(hwsw_unmap_sg_attrs);
-
-void
-hwsw_sync_single_for_cpu (struct device *dev, dma_addr_t addr, size_t size, int dir)
-{
- if (use_swiotlb(dev))
- swiotlb_sync_single_for_cpu(dev, addr, size, dir);
- else
- hwiommu_sync_single_for_cpu(dev, addr, size, dir);
-}
-
-void
-hwsw_sync_sg_for_cpu (struct device *dev, struct scatterlist *sg, int nelems, int dir)
-{
- if (use_swiotlb(dev))
- swiotlb_sync_sg_for_cpu(dev, sg, nelems, dir);
- else
- hwiommu_sync_sg_for_cpu(dev, sg, nelems, dir);
-}
-
-void
-hwsw_sync_single_for_device (struct device *dev, dma_addr_t addr, size_t size, int dir)
-{
- if (use_swiotlb(dev))
- swiotlb_sync_single_for_device(dev, addr, size, dir);
- else
- hwiommu_sync_single_for_device(dev, addr, size, dir);
-}
-
-void
-hwsw_sync_sg_for_device (struct device *dev, struct scatterlist *sg, int nelems, int dir)
-{
- if (use_swiotlb(dev))
- swiotlb_sync_sg_for_device(dev, sg, nelems, dir);
- else
- hwiommu_sync_sg_for_device(dev, sg, nelems, dir);
-}
-
-int
-hwsw_dma_supported (struct device *dev, u64 mask)
-{
- if (hwiommu_dma_supported(dev, mask))
- return 1;
- return swiotlb_dma_supported(dev, mask);
-}
-
-int
-hwsw_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- return hwiommu_dma_mapping_error(dev, dma_addr) ||
- swiotlb_dma_mapping_error(dev, dma_addr);
-}
-
-EXPORT_SYMBOL(hwsw_dma_mapping_error);
-EXPORT_SYMBOL(hwsw_dma_supported);
-EXPORT_SYMBOL(hwsw_alloc_coherent);
-EXPORT_SYMBOL(hwsw_free_coherent);
-EXPORT_SYMBOL(hwsw_sync_single_for_cpu);
-EXPORT_SYMBOL(hwsw_sync_single_for_device);
-EXPORT_SYMBOL(hwsw_sync_sg_for_cpu);
-EXPORT_SYMBOL(hwsw_sync_sg_for_device);
diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
index d98f0f4..129b62e 100644
--- a/arch/ia64/hp/common/sba_iommu.c
+++ b/arch/ia64/hp/common/sba_iommu.c
@@ -36,6 +36,7 @@
#include <linux/bitops.h> /* hweight64() */
#include <linux/crash_dump.h>
#include <linux/iommu-helper.h>
+#include <linux/dma-mapping.h>
#include <asm/delay.h> /* ia64_get_itc() */
#include <asm/io.h>
@@ -908,11 +909,13 @@
*
* See Documentation/DMA-mapping.txt
*/
-dma_addr_t
-sba_map_single_attrs(struct device *dev, void *addr, size_t size, int dir,
- struct dma_attrs *attrs)
+static dma_addr_t sba_map_page(struct device *dev, struct page *page,
+ unsigned long poff, size_t size,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
struct ioc *ioc;
+ void *addr = page_address(page) + poff;
dma_addr_t iovp;
dma_addr_t offset;
u64 *pdir_start;
@@ -990,7 +993,14 @@
#endif
return SBA_IOVA(ioc, iovp, offset);
}
-EXPORT_SYMBOL(sba_map_single_attrs);
+
+static dma_addr_t sba_map_single_attrs(struct device *dev, void *addr,
+ size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
+{
+ return sba_map_page(dev, virt_to_page(addr),
+ (unsigned long)addr & ~PAGE_MASK, size, dir, attrs);
+}
#ifdef ENABLE_MARK_CLEAN
static SBA_INLINE void
@@ -1026,8 +1036,8 @@
*
* See Documentation/DMA-mapping.txt
*/
-void sba_unmap_single_attrs(struct device *dev, dma_addr_t iova, size_t size,
- int dir, struct dma_attrs *attrs)
+static void sba_unmap_page(struct device *dev, dma_addr_t iova, size_t size,
+ enum dma_data_direction dir, struct dma_attrs *attrs)
{
struct ioc *ioc;
#if DELAYED_RESOURCE_CNT > 0
@@ -1094,7 +1104,12 @@
spin_unlock_irqrestore(&ioc->res_lock, flags);
#endif /* DELAYED_RESOURCE_CNT == 0 */
}
-EXPORT_SYMBOL(sba_unmap_single_attrs);
+
+void sba_unmap_single_attrs(struct device *dev, dma_addr_t iova, size_t size,
+ enum dma_data_direction dir, struct dma_attrs *attrs)
+{
+ sba_unmap_page(dev, iova, size, dir, attrs);
+}
/**
* sba_alloc_coherent - allocate/map shared mem for DMA
@@ -1104,7 +1119,7 @@
*
* See Documentation/DMA-mapping.txt
*/
-void *
+static void *
sba_alloc_coherent (struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flags)
{
struct ioc *ioc;
@@ -1167,7 +1182,8 @@
*
* See Documentation/DMA-mapping.txt
*/
-void sba_free_coherent (struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle)
+static void sba_free_coherent (struct device *dev, size_t size, void *vaddr,
+ dma_addr_t dma_handle)
{
sba_unmap_single_attrs(dev, dma_handle, size, 0, NULL);
free_pages((unsigned long) vaddr, get_order(size));
@@ -1422,8 +1438,9 @@
*
* See Documentation/DMA-mapping.txt
*/
-int sba_map_sg_attrs(struct device *dev, struct scatterlist *sglist, int nents,
- int dir, struct dma_attrs *attrs)
+static int sba_map_sg_attrs(struct device *dev, struct scatterlist *sglist,
+ int nents, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
struct ioc *ioc;
int coalesced, filled = 0;
@@ -1502,7 +1519,6 @@
return filled;
}
-EXPORT_SYMBOL(sba_map_sg_attrs);
/**
* sba_unmap_sg_attrs - unmap Scatter/Gather list
@@ -1514,8 +1530,9 @@
*
* See Documentation/DMA-mapping.txt
*/
-void sba_unmap_sg_attrs(struct device *dev, struct scatterlist *sglist,
- int nents, int dir, struct dma_attrs *attrs)
+static void sba_unmap_sg_attrs(struct device *dev, struct scatterlist *sglist,
+ int nents, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
#ifdef ASSERT_PDIR_SANITY
struct ioc *ioc;
@@ -1551,7 +1568,6 @@
#endif
}
-EXPORT_SYMBOL(sba_unmap_sg_attrs);
/**************************************************************
*
@@ -2064,6 +2080,8 @@
},
};
+extern struct dma_map_ops swiotlb_dma_ops;
+
static int __init
sba_init(void)
{
@@ -2077,6 +2095,7 @@
* a successful kdump kernel boot is to use the swiotlb.
*/
if (is_kdump_kernel()) {
+ dma_ops = &swiotlb_dma_ops;
if (swiotlb_late_init_with_default_size(64 * (1<<20)) != 0)
panic("Unable to initialize software I/O TLB:"
" Try machvec=dig boot option");
@@ -2092,6 +2111,7 @@
* If we didn't find something sba_iommu can claim, we
* need to setup the swiotlb and switch to the dig machvec.
*/
+ dma_ops = &swiotlb_dma_ops;
if (swiotlb_late_init_with_default_size(64 * (1<<20)) != 0)
panic("Unable to find SBA IOMMU or initialize "
"software I/O TLB: Try machvec=dig boot option");
@@ -2138,15 +2158,13 @@
return 1;
}
-int
-sba_dma_supported (struct device *dev, u64 mask)
+static int sba_dma_supported (struct device *dev, u64 mask)
{
/* make sure it's at least 32bit capable */
return ((mask & 0xFFFFFFFFUL) == 0xFFFFFFFFUL);
}
-int
-sba_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
+static int sba_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return 0;
}
@@ -2176,7 +2194,22 @@
__setup("sbapagesize=",sba_page_override);
-EXPORT_SYMBOL(sba_dma_mapping_error);
-EXPORT_SYMBOL(sba_dma_supported);
-EXPORT_SYMBOL(sba_alloc_coherent);
-EXPORT_SYMBOL(sba_free_coherent);
+struct dma_map_ops sba_dma_ops = {
+ .alloc_coherent = sba_alloc_coherent,
+ .free_coherent = sba_free_coherent,
+ .map_page = sba_map_page,
+ .unmap_page = sba_unmap_page,
+ .map_sg = sba_map_sg_attrs,
+ .unmap_sg = sba_unmap_sg_attrs,
+ .sync_single_for_cpu = machvec_dma_sync_single,
+ .sync_sg_for_cpu = machvec_dma_sync_sg,
+ .sync_single_for_device = machvec_dma_sync_single,
+ .sync_sg_for_device = machvec_dma_sync_sg,
+ .dma_supported = sba_dma_supported,
+ .mapping_error = sba_dma_mapping_error,
+};
+
+void sba_dma_init(void)
+{
+ dma_ops = &sba_dma_ops;
+}
diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h
index bbab7e2..f4d4b18 100644
--- a/arch/ia64/include/asm/dma-mapping.h
+++ b/arch/ia64/include/asm/dma-mapping.h
@@ -9,99 +9,128 @@
#include <linux/scatterlist.h>
#include <asm/swiotlb.h>
-struct dma_mapping_ops {
- int (*mapping_error)(struct device *dev,
- dma_addr_t dma_addr);
- void* (*alloc_coherent)(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp);
- void (*free_coherent)(struct device *dev, size_t size,
- void *vaddr, dma_addr_t dma_handle);
- dma_addr_t (*map_single)(struct device *hwdev, unsigned long ptr,
- size_t size, int direction);
- void (*unmap_single)(struct device *dev, dma_addr_t addr,
- size_t size, int direction);
- void (*sync_single_for_cpu)(struct device *hwdev,
- dma_addr_t dma_handle, size_t size,
- int direction);
- void (*sync_single_for_device)(struct device *hwdev,
- dma_addr_t dma_handle, size_t size,
- int direction);
- void (*sync_single_range_for_cpu)(struct device *hwdev,
- dma_addr_t dma_handle, unsigned long offset,
- size_t size, int direction);
- void (*sync_single_range_for_device)(struct device *hwdev,
- dma_addr_t dma_handle, unsigned long offset,
- size_t size, int direction);
- void (*sync_sg_for_cpu)(struct device *hwdev,
- struct scatterlist *sg, int nelems,
- int direction);
- void (*sync_sg_for_device)(struct device *hwdev,
- struct scatterlist *sg, int nelems,
- int direction);
- int (*map_sg)(struct device *hwdev, struct scatterlist *sg,
- int nents, int direction);
- void (*unmap_sg)(struct device *hwdev,
- struct scatterlist *sg, int nents,
- int direction);
- int (*dma_supported_op)(struct device *hwdev, u64 mask);
- int is_phys;
-};
-
-extern struct dma_mapping_ops *dma_ops;
+extern struct dma_map_ops *dma_ops;
extern struct ia64_machine_vector ia64_mv;
extern void set_iommu_machvec(void);
-#define dma_alloc_coherent(dev, size, handle, gfp) \
- platform_dma_alloc_coherent(dev, size, handle, (gfp) | GFP_DMA)
+extern void machvec_dma_sync_single(struct device *, dma_addr_t, size_t,
+ enum dma_data_direction);
+extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int,
+ enum dma_data_direction);
-/* coherent mem. is cheap */
-static inline void *
-dma_alloc_noncoherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
- gfp_t flag)
+static inline void *dma_alloc_coherent(struct device *dev, size_t size,
+ dma_addr_t *daddr, gfp_t gfp)
{
- return dma_alloc_coherent(dev, size, dma_handle, flag);
+ struct dma_map_ops *ops = platform_dma_get_ops(dev);
+ return ops->alloc_coherent(dev, size, daddr, gfp | GFP_DMA);
}
-#define dma_free_coherent platform_dma_free_coherent
-static inline void
-dma_free_noncoherent(struct device *dev, size_t size, void *cpu_addr,
- dma_addr_t dma_handle)
-{
- dma_free_coherent(dev, size, cpu_addr, dma_handle);
-}
-#define dma_map_single_attrs platform_dma_map_single_attrs
-static inline dma_addr_t dma_map_single(struct device *dev, void *cpu_addr,
- size_t size, int dir)
-{
- return dma_map_single_attrs(dev, cpu_addr, size, dir, NULL);
-}
-#define dma_map_sg_attrs platform_dma_map_sg_attrs
-static inline int dma_map_sg(struct device *dev, struct scatterlist *sgl,
- int nents, int dir)
-{
- return dma_map_sg_attrs(dev, sgl, nents, dir, NULL);
-}
-#define dma_unmap_single_attrs platform_dma_unmap_single_attrs
-static inline void dma_unmap_single(struct device *dev, dma_addr_t cpu_addr,
- size_t size, int dir)
-{
- return dma_unmap_single_attrs(dev, cpu_addr, size, dir, NULL);
-}
-#define dma_unmap_sg_attrs platform_dma_unmap_sg_attrs
-static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sgl,
- int nents, int dir)
-{
- return dma_unmap_sg_attrs(dev, sgl, nents, dir, NULL);
-}
-#define dma_sync_single_for_cpu platform_dma_sync_single_for_cpu
-#define dma_sync_sg_for_cpu platform_dma_sync_sg_for_cpu
-#define dma_sync_single_for_device platform_dma_sync_single_for_device
-#define dma_sync_sg_for_device platform_dma_sync_sg_for_device
-#define dma_mapping_error platform_dma_mapping_error
-#define dma_map_page(dev, pg, off, size, dir) \
- dma_map_single(dev, page_address(pg) + (off), (size), (dir))
-#define dma_unmap_page(dev, dma_addr, size, dir) \
- dma_unmap_single(dev, dma_addr, size, dir)
+static inline void dma_free_coherent(struct device *dev, size_t size,
+ void *caddr, dma_addr_t daddr)
+{
+ struct dma_map_ops *ops = platform_dma_get_ops(dev);
+ ops->free_coherent(dev, size, caddr, daddr);
+}
+
+#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
+#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
+
+static inline dma_addr_t dma_map_single_attrs(struct device *dev,
+ void *caddr, size_t size,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs)
+{
+ struct dma_map_ops *ops = platform_dma_get_ops(dev);
+ return ops->map_page(dev, virt_to_page(caddr),
+ (unsigned long)caddr & ~PAGE_MASK, size,
+ dir, attrs);
+}
+
+static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t daddr,
+ size_t size,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs)
+{
+ struct dma_map_ops *ops = platform_dma_get_ops(dev);
+ ops->unmap_page(dev, daddr, size, dir, attrs);
+}
+
+#define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, NULL)
+#define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, NULL)
+
+static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sgl,
+ int nents, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
+{
+ struct dma_map_ops *ops = platform_dma_get_ops(dev);
+ return ops->map_sg(dev, sgl, nents, dir, attrs);
+}
+
+static inline void dma_unmap_sg_attrs(struct device *dev,
+ struct scatterlist *sgl, int nents,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs)
+{
+ struct dma_map_ops *ops = platform_dma_get_ops(dev);
+ ops->unmap_sg(dev, sgl, nents, dir, attrs);
+}
+
+#define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, NULL)
+#define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, NULL)
+
+static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t daddr,
+ size_t size,
+ enum dma_data_direction dir)
+{
+ struct dma_map_ops *ops = platform_dma_get_ops(dev);
+ ops->sync_single_for_cpu(dev, daddr, size, dir);
+}
+
+static inline void dma_sync_sg_for_cpu(struct device *dev,
+ struct scatterlist *sgl,
+ int nents, enum dma_data_direction dir)
+{
+ struct dma_map_ops *ops = platform_dma_get_ops(dev);
+ ops->sync_sg_for_cpu(dev, sgl, nents, dir);
+}
+
+static inline void dma_sync_single_for_device(struct device *dev,
+ dma_addr_t daddr,
+ size_t size,
+ enum dma_data_direction dir)
+{
+ struct dma_map_ops *ops = platform_dma_get_ops(dev);
+ ops->sync_single_for_device(dev, daddr, size, dir);
+}
+
+static inline void dma_sync_sg_for_device(struct device *dev,
+ struct scatterlist *sgl,
+ int nents,
+ enum dma_data_direction dir)
+{
+ struct dma_map_ops *ops = platform_dma_get_ops(dev);
+ ops->sync_sg_for_device(dev, sgl, nents, dir);
+}
+
+static inline int dma_mapping_error(struct device *dev, dma_addr_t daddr)
+{
+ struct dma_map_ops *ops = platform_dma_get_ops(dev);
+ return ops->mapping_error(dev, daddr);
+}
+
+static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
+ size_t offset, size_t size,
+ enum dma_data_direction dir)
+{
+ struct dma_map_ops *ops = platform_dma_get_ops(dev);
+ return ops->map_page(dev, page, offset, size, dir, NULL);
+}
+
+static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
+ size_t size, enum dma_data_direction dir)
+{
+ dma_unmap_single(dev, addr, size, dir);
+}
/*
* Rest of this file is part of the "Advanced DMA API". Use at your own risk.
@@ -113,7 +142,11 @@
#define dma_sync_single_range_for_device(dev, dma_handle, offset, size, dir) \
dma_sync_single_for_device(dev, dma_handle, size, dir)
-#define dma_supported platform_dma_supported
+static inline int dma_supported(struct device *dev, u64 mask)
+{
+ struct dma_map_ops *ops = platform_dma_get_ops(dev);
+ return ops->dma_supported(dev, mask);
+}
static inline int
dma_set_mask (struct device *dev, u64 mask)
@@ -139,11 +172,4 @@
#define dma_is_consistent(d, h) (1) /* all we do is coherent memory... */
-static inline struct dma_mapping_ops *get_dma_ops(struct device *dev)
-{
- return dma_ops;
-}
-
-
-
#endif /* _ASM_IA64_DMA_MAPPING_H */
diff --git a/arch/ia64/include/asm/machvec.h b/arch/ia64/include/asm/machvec.h
index 59c17e4..22a75fb 100644
--- a/arch/ia64/include/asm/machvec.h
+++ b/arch/ia64/include/asm/machvec.h
@@ -11,7 +11,6 @@
#define _ASM_IA64_MACHVEC_H
#include <linux/types.h>
-#include <linux/swiotlb.h>
/* forward declarations: */
struct device;
@@ -45,23 +44,7 @@
/* DMA-mapping interface: */
typedef void ia64_mv_dma_init (void);
-typedef void *ia64_mv_dma_alloc_coherent (struct device *, size_t, dma_addr_t *, gfp_t);
-typedef void ia64_mv_dma_free_coherent (struct device *, size_t, void *, dma_addr_t);
-typedef dma_addr_t ia64_mv_dma_map_single (struct device *, void *, size_t, int);
-typedef void ia64_mv_dma_unmap_single (struct device *, dma_addr_t, size_t, int);
-typedef int ia64_mv_dma_map_sg (struct device *, struct scatterlist *, int, int);
-typedef void ia64_mv_dma_unmap_sg (struct device *, struct scatterlist *, int, int);
-typedef void ia64_mv_dma_sync_single_for_cpu (struct device *, dma_addr_t, size_t, int);
-typedef void ia64_mv_dma_sync_sg_for_cpu (struct device *, struct scatterlist *, int, int);
-typedef void ia64_mv_dma_sync_single_for_device (struct device *, dma_addr_t, size_t, int);
-typedef void ia64_mv_dma_sync_sg_for_device (struct device *, struct scatterlist *, int, int);
-typedef int ia64_mv_dma_mapping_error(struct device *, dma_addr_t dma_addr);
-typedef int ia64_mv_dma_supported (struct device *, u64);
-
-typedef dma_addr_t ia64_mv_dma_map_single_attrs (struct device *, void *, size_t, int, struct dma_attrs *);
-typedef void ia64_mv_dma_unmap_single_attrs (struct device *, dma_addr_t, size_t, int, struct dma_attrs *);
-typedef int ia64_mv_dma_map_sg_attrs (struct device *, struct scatterlist *, int, int, struct dma_attrs *);
-typedef void ia64_mv_dma_unmap_sg_attrs (struct device *, struct scatterlist *, int, int, struct dma_attrs *);
+typedef struct dma_map_ops *ia64_mv_dma_get_ops(struct device *);
/*
* WARNING: The legacy I/O space is _architected_. Platforms are
@@ -113,8 +96,6 @@
extern void machvec_setup (char **);
extern void machvec_timer_interrupt (int, void *);
-extern void machvec_dma_sync_single (struct device *, dma_addr_t, size_t, int);
-extern void machvec_dma_sync_sg (struct device *, struct scatterlist *, int, int);
extern void machvec_tlb_migrate_finish (struct mm_struct *);
# if defined (CONFIG_IA64_HP_SIM)
@@ -147,18 +128,7 @@
# define platform_global_tlb_purge ia64_mv.global_tlb_purge
# define platform_tlb_migrate_finish ia64_mv.tlb_migrate_finish
# define platform_dma_init ia64_mv.dma_init
-# define platform_dma_alloc_coherent ia64_mv.dma_alloc_coherent
-# define platform_dma_free_coherent ia64_mv.dma_free_coherent
-# define platform_dma_map_single_attrs ia64_mv.dma_map_single_attrs
-# define platform_dma_unmap_single_attrs ia64_mv.dma_unmap_single_attrs
-# define platform_dma_map_sg_attrs ia64_mv.dma_map_sg_attrs
-# define platform_dma_unmap_sg_attrs ia64_mv.dma_unmap_sg_attrs
-# define platform_dma_sync_single_for_cpu ia64_mv.dma_sync_single_for_cpu
-# define platform_dma_sync_sg_for_cpu ia64_mv.dma_sync_sg_for_cpu
-# define platform_dma_sync_single_for_device ia64_mv.dma_sync_single_for_device
-# define platform_dma_sync_sg_for_device ia64_mv.dma_sync_sg_for_device
-# define platform_dma_mapping_error ia64_mv.dma_mapping_error
-# define platform_dma_supported ia64_mv.dma_supported
+# define platform_dma_get_ops ia64_mv.dma_get_ops
# define platform_irq_to_vector ia64_mv.irq_to_vector
# define platform_local_vector_to_irq ia64_mv.local_vector_to_irq
# define platform_pci_get_legacy_mem ia64_mv.pci_get_legacy_mem
@@ -201,18 +171,7 @@
ia64_mv_global_tlb_purge_t *global_tlb_purge;
ia64_mv_tlb_migrate_finish_t *tlb_migrate_finish;
ia64_mv_dma_init *dma_init;
- ia64_mv_dma_alloc_coherent *dma_alloc_coherent;
- ia64_mv_dma_free_coherent *dma_free_coherent;
- ia64_mv_dma_map_single_attrs *dma_map_single_attrs;
- ia64_mv_dma_unmap_single_attrs *dma_unmap_single_attrs;
- ia64_mv_dma_map_sg_attrs *dma_map_sg_attrs;
- ia64_mv_dma_unmap_sg_attrs *dma_unmap_sg_attrs;
- ia64_mv_dma_sync_single_for_cpu *dma_sync_single_for_cpu;
- ia64_mv_dma_sync_sg_for_cpu *dma_sync_sg_for_cpu;
- ia64_mv_dma_sync_single_for_device *dma_sync_single_for_device;
- ia64_mv_dma_sync_sg_for_device *dma_sync_sg_for_device;
- ia64_mv_dma_mapping_error *dma_mapping_error;
- ia64_mv_dma_supported *dma_supported;
+ ia64_mv_dma_get_ops *dma_get_ops;
ia64_mv_irq_to_vector *irq_to_vector;
ia64_mv_local_vector_to_irq *local_vector_to_irq;
ia64_mv_pci_get_legacy_mem_t *pci_get_legacy_mem;
@@ -251,18 +210,7 @@
platform_global_tlb_purge, \
platform_tlb_migrate_finish, \
platform_dma_init, \
- platform_dma_alloc_coherent, \
- platform_dma_free_coherent, \
- platform_dma_map_single_attrs, \
- platform_dma_unmap_single_attrs, \
- platform_dma_map_sg_attrs, \
- platform_dma_unmap_sg_attrs, \
- platform_dma_sync_single_for_cpu, \
- platform_dma_sync_sg_for_cpu, \
- platform_dma_sync_single_for_device, \
- platform_dma_sync_sg_for_device, \
- platform_dma_mapping_error, \
- platform_dma_supported, \
+ platform_dma_get_ops, \
platform_irq_to_vector, \
platform_local_vector_to_irq, \
platform_pci_get_legacy_mem, \
@@ -298,6 +246,9 @@
# error Unknown configuration. Update arch/ia64/include/asm/machvec.h.
# endif /* CONFIG_IA64_GENERIC */
+extern void swiotlb_dma_init(void);
+extern struct dma_map_ops *dma_get_ops(struct device *);
+
/*
* Define default versions so we can extend machvec for new platforms without having
* to update the machvec files for all existing platforms.
@@ -328,43 +279,10 @@
# define platform_kernel_launch_event machvec_noop
#endif
#ifndef platform_dma_init
-# define platform_dma_init swiotlb_init
+# define platform_dma_init swiotlb_dma_init
#endif
-#ifndef platform_dma_alloc_coherent
-# define platform_dma_alloc_coherent swiotlb_alloc_coherent
-#endif
-#ifndef platform_dma_free_coherent
-# define platform_dma_free_coherent swiotlb_free_coherent
-#endif
-#ifndef platform_dma_map_single_attrs
-# define platform_dma_map_single_attrs swiotlb_map_single_attrs
-#endif
-#ifndef platform_dma_unmap_single_attrs
-# define platform_dma_unmap_single_attrs swiotlb_unmap_single_attrs
-#endif
-#ifndef platform_dma_map_sg_attrs
-# define platform_dma_map_sg_attrs swiotlb_map_sg_attrs
-#endif
-#ifndef platform_dma_unmap_sg_attrs
-# define platform_dma_unmap_sg_attrs swiotlb_unmap_sg_attrs
-#endif
-#ifndef platform_dma_sync_single_for_cpu
-# define platform_dma_sync_single_for_cpu swiotlb_sync_single_for_cpu
-#endif
-#ifndef platform_dma_sync_sg_for_cpu
-# define platform_dma_sync_sg_for_cpu swiotlb_sync_sg_for_cpu
-#endif
-#ifndef platform_dma_sync_single_for_device
-# define platform_dma_sync_single_for_device swiotlb_sync_single_for_device
-#endif
-#ifndef platform_dma_sync_sg_for_device
-# define platform_dma_sync_sg_for_device swiotlb_sync_sg_for_device
-#endif
-#ifndef platform_dma_mapping_error
-# define platform_dma_mapping_error swiotlb_dma_mapping_error
-#endif
-#ifndef platform_dma_supported
-# define platform_dma_supported swiotlb_dma_supported
+#ifndef platform_dma_get_ops
+# define platform_dma_get_ops dma_get_ops
#endif
#ifndef platform_irq_to_vector
# define platform_irq_to_vector __ia64_irq_to_vector
diff --git a/arch/ia64/include/asm/machvec_dig_vtd.h b/arch/ia64/include/asm/machvec_dig_vtd.h
index 3400b56..6ab1de5 100644
--- a/arch/ia64/include/asm/machvec_dig_vtd.h
+++ b/arch/ia64/include/asm/machvec_dig_vtd.h
@@ -2,14 +2,6 @@
#define _ASM_IA64_MACHVEC_DIG_VTD_h
extern ia64_mv_setup_t dig_setup;
-extern ia64_mv_dma_alloc_coherent vtd_alloc_coherent;
-extern ia64_mv_dma_free_coherent vtd_free_coherent;
-extern ia64_mv_dma_map_single_attrs vtd_map_single_attrs;
-extern ia64_mv_dma_unmap_single_attrs vtd_unmap_single_attrs;
-extern ia64_mv_dma_map_sg_attrs vtd_map_sg_attrs;
-extern ia64_mv_dma_unmap_sg_attrs vtd_unmap_sg_attrs;
-extern ia64_mv_dma_supported iommu_dma_supported;
-extern ia64_mv_dma_mapping_error vtd_dma_mapping_error;
extern ia64_mv_dma_init pci_iommu_alloc;
/*
@@ -22,17 +14,5 @@
#define platform_name "dig_vtd"
#define platform_setup dig_setup
#define platform_dma_init pci_iommu_alloc
-#define platform_dma_alloc_coherent vtd_alloc_coherent
-#define platform_dma_free_coherent vtd_free_coherent
-#define platform_dma_map_single_attrs vtd_map_single_attrs
-#define platform_dma_unmap_single_attrs vtd_unmap_single_attrs
-#define platform_dma_map_sg_attrs vtd_map_sg_attrs
-#define platform_dma_unmap_sg_attrs vtd_unmap_sg_attrs
-#define platform_dma_sync_single_for_cpu machvec_dma_sync_single
-#define platform_dma_sync_sg_for_cpu machvec_dma_sync_sg
-#define platform_dma_sync_single_for_device machvec_dma_sync_single
-#define platform_dma_sync_sg_for_device machvec_dma_sync_sg
-#define platform_dma_supported iommu_dma_supported
-#define platform_dma_mapping_error vtd_dma_mapping_error
#endif /* _ASM_IA64_MACHVEC_DIG_VTD_h */
diff --git a/arch/ia64/include/asm/machvec_hpzx1.h b/arch/ia64/include/asm/machvec_hpzx1.h
index 2f57f51..3bd83d7 100644
--- a/arch/ia64/include/asm/machvec_hpzx1.h
+++ b/arch/ia64/include/asm/machvec_hpzx1.h
@@ -2,14 +2,7 @@
#define _ASM_IA64_MACHVEC_HPZX1_h
extern ia64_mv_setup_t dig_setup;
-extern ia64_mv_dma_alloc_coherent sba_alloc_coherent;
-extern ia64_mv_dma_free_coherent sba_free_coherent;
-extern ia64_mv_dma_map_single_attrs sba_map_single_attrs;
-extern ia64_mv_dma_unmap_single_attrs sba_unmap_single_attrs;
-extern ia64_mv_dma_map_sg_attrs sba_map_sg_attrs;
-extern ia64_mv_dma_unmap_sg_attrs sba_unmap_sg_attrs;
-extern ia64_mv_dma_supported sba_dma_supported;
-extern ia64_mv_dma_mapping_error sba_dma_mapping_error;
+extern ia64_mv_dma_init sba_dma_init;
/*
* This stuff has dual use!
@@ -20,18 +13,6 @@
*/
#define platform_name "hpzx1"
#define platform_setup dig_setup
-#define platform_dma_init machvec_noop
-#define platform_dma_alloc_coherent sba_alloc_coherent
-#define platform_dma_free_coherent sba_free_coherent
-#define platform_dma_map_single_attrs sba_map_single_attrs
-#define platform_dma_unmap_single_attrs sba_unmap_single_attrs
-#define platform_dma_map_sg_attrs sba_map_sg_attrs
-#define platform_dma_unmap_sg_attrs sba_unmap_sg_attrs
-#define platform_dma_sync_single_for_cpu machvec_dma_sync_single
-#define platform_dma_sync_sg_for_cpu machvec_dma_sync_sg
-#define platform_dma_sync_single_for_device machvec_dma_sync_single
-#define platform_dma_sync_sg_for_device machvec_dma_sync_sg
-#define platform_dma_supported sba_dma_supported
-#define platform_dma_mapping_error sba_dma_mapping_error
+#define platform_dma_init sba_dma_init
#endif /* _ASM_IA64_MACHVEC_HPZX1_h */
diff --git a/arch/ia64/include/asm/machvec_hpzx1_swiotlb.h b/arch/ia64/include/asm/machvec_hpzx1_swiotlb.h
index a842cdd..1091ac3 100644
--- a/arch/ia64/include/asm/machvec_hpzx1_swiotlb.h
+++ b/arch/ia64/include/asm/machvec_hpzx1_swiotlb.h
@@ -2,18 +2,7 @@
#define _ASM_IA64_MACHVEC_HPZX1_SWIOTLB_h
extern ia64_mv_setup_t dig_setup;
-extern ia64_mv_dma_alloc_coherent hwsw_alloc_coherent;
-extern ia64_mv_dma_free_coherent hwsw_free_coherent;
-extern ia64_mv_dma_map_single_attrs hwsw_map_single_attrs;
-extern ia64_mv_dma_unmap_single_attrs hwsw_unmap_single_attrs;
-extern ia64_mv_dma_map_sg_attrs hwsw_map_sg_attrs;
-extern ia64_mv_dma_unmap_sg_attrs hwsw_unmap_sg_attrs;
-extern ia64_mv_dma_supported hwsw_dma_supported;
-extern ia64_mv_dma_mapping_error hwsw_dma_mapping_error;
-extern ia64_mv_dma_sync_single_for_cpu hwsw_sync_single_for_cpu;
-extern ia64_mv_dma_sync_sg_for_cpu hwsw_sync_sg_for_cpu;
-extern ia64_mv_dma_sync_single_for_device hwsw_sync_single_for_device;
-extern ia64_mv_dma_sync_sg_for_device hwsw_sync_sg_for_device;
+extern ia64_mv_dma_get_ops hwsw_dma_get_ops;
/*
* This stuff has dual use!
@@ -23,20 +12,8 @@
* the macros are used directly.
*/
#define platform_name "hpzx1_swiotlb"
-
#define platform_setup dig_setup
#define platform_dma_init machvec_noop
-#define platform_dma_alloc_coherent hwsw_alloc_coherent
-#define platform_dma_free_coherent hwsw_free_coherent
-#define platform_dma_map_single_attrs hwsw_map_single_attrs
-#define platform_dma_unmap_single_attrs hwsw_unmap_single_attrs
-#define platform_dma_map_sg_attrs hwsw_map_sg_attrs
-#define platform_dma_unmap_sg_attrs hwsw_unmap_sg_attrs
-#define platform_dma_supported hwsw_dma_supported
-#define platform_dma_mapping_error hwsw_dma_mapping_error
-#define platform_dma_sync_single_for_cpu hwsw_sync_single_for_cpu
-#define platform_dma_sync_sg_for_cpu hwsw_sync_sg_for_cpu
-#define platform_dma_sync_single_for_device hwsw_sync_single_for_device
-#define platform_dma_sync_sg_for_device hwsw_sync_sg_for_device
+#define platform_dma_get_ops hwsw_dma_get_ops
#endif /* _ASM_IA64_MACHVEC_HPZX1_SWIOTLB_h */
diff --git a/arch/ia64/include/asm/machvec_sn2.h b/arch/ia64/include/asm/machvec_sn2.h
index 781308e..afd029b 100644
--- a/arch/ia64/include/asm/machvec_sn2.h
+++ b/arch/ia64/include/asm/machvec_sn2.h
@@ -55,18 +55,7 @@
extern ia64_mv_readw_t __sn_readw_relaxed;
extern ia64_mv_readl_t __sn_readl_relaxed;
extern ia64_mv_readq_t __sn_readq_relaxed;
-extern ia64_mv_dma_alloc_coherent sn_dma_alloc_coherent;
-extern ia64_mv_dma_free_coherent sn_dma_free_coherent;
-extern ia64_mv_dma_map_single_attrs sn_dma_map_single_attrs;
-extern ia64_mv_dma_unmap_single_attrs sn_dma_unmap_single_attrs;
-extern ia64_mv_dma_map_sg_attrs sn_dma_map_sg_attrs;
-extern ia64_mv_dma_unmap_sg_attrs sn_dma_unmap_sg_attrs;
-extern ia64_mv_dma_sync_single_for_cpu sn_dma_sync_single_for_cpu;
-extern ia64_mv_dma_sync_sg_for_cpu sn_dma_sync_sg_for_cpu;
-extern ia64_mv_dma_sync_single_for_device sn_dma_sync_single_for_device;
-extern ia64_mv_dma_sync_sg_for_device sn_dma_sync_sg_for_device;
-extern ia64_mv_dma_mapping_error sn_dma_mapping_error;
-extern ia64_mv_dma_supported sn_dma_supported;
+extern ia64_mv_dma_init sn_dma_init;
extern ia64_mv_migrate_t sn_migrate;
extern ia64_mv_kernel_launch_event_t sn_kernel_launch_event;
extern ia64_mv_setup_msi_irq_t sn_setup_msi_irq;
@@ -110,19 +99,7 @@
#define platform_pci_get_legacy_mem sn_pci_get_legacy_mem
#define platform_pci_legacy_read sn_pci_legacy_read
#define platform_pci_legacy_write sn_pci_legacy_write
-#define platform_dma_init machvec_noop
-#define platform_dma_alloc_coherent sn_dma_alloc_coherent
-#define platform_dma_free_coherent sn_dma_free_coherent
-#define platform_dma_map_single_attrs sn_dma_map_single_attrs
-#define platform_dma_unmap_single_attrs sn_dma_unmap_single_attrs
-#define platform_dma_map_sg_attrs sn_dma_map_sg_attrs
-#define platform_dma_unmap_sg_attrs sn_dma_unmap_sg_attrs
-#define platform_dma_sync_single_for_cpu sn_dma_sync_single_for_cpu
-#define platform_dma_sync_sg_for_cpu sn_dma_sync_sg_for_cpu
-#define platform_dma_sync_single_for_device sn_dma_sync_single_for_device
-#define platform_dma_sync_sg_for_device sn_dma_sync_sg_for_device
-#define platform_dma_mapping_error sn_dma_mapping_error
-#define platform_dma_supported sn_dma_supported
+#define platform_dma_init sn_dma_init
#define platform_migrate sn_migrate
#define platform_kernel_launch_event sn_kernel_launch_event
#ifdef CONFIG_PCI_MSI
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index c381ea9..f2778f2 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -7,7 +7,7 @@
obj-y := acpi.o entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64.o \
irq_lsapic.o ivt.o machvec.o pal.o patch.o process.o perfmon.o ptrace.o sal.o \
salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
- unwind.o mca.o mca_asm.o topology.o
+ unwind.o mca.o mca_asm.o topology.o dma-mapping.o
obj-$(CONFIG_IA64_BRL_EMU) += brl_emu.o
obj-$(CONFIG_IA64_GENERIC) += acpi-ext.o
@@ -43,9 +43,7 @@
obj-y += esi_stub.o # must be in kernel proper
endif
obj-$(CONFIG_DMAR) += pci-dma.o
-ifeq ($(CONFIG_DMAR), y)
obj-$(CONFIG_SWIOTLB) += pci-swiotlb.o
-endif
# The gate DSO image is built using a special linker script.
targets += gate.so gate-syms.o
diff --git a/arch/ia64/kernel/dma-mapping.c b/arch/ia64/kernel/dma-mapping.c
new file mode 100644
index 0000000..7060e13
--- /dev/null
+++ b/arch/ia64/kernel/dma-mapping.c
@@ -0,0 +1,10 @@
+#include <linux/dma-mapping.h>
+
+struct dma_map_ops *dma_ops;
+EXPORT_SYMBOL(dma_ops);
+
+struct dma_map_ops *dma_get_ops(struct device *dev)
+{
+ return dma_ops;
+}
+EXPORT_SYMBOL(dma_get_ops);
diff --git a/arch/ia64/kernel/machvec.c b/arch/ia64/kernel/machvec.c
index 7ccb228..d41a40e 100644
--- a/arch/ia64/kernel/machvec.c
+++ b/arch/ia64/kernel/machvec.c
@@ -1,5 +1,5 @@
#include <linux/module.h>
-
+#include <linux/dma-mapping.h>
#include <asm/machvec.h>
#include <asm/system.h>
@@ -75,14 +75,16 @@
EXPORT_SYMBOL(machvec_timer_interrupt);
void
-machvec_dma_sync_single (struct device *hwdev, dma_addr_t dma_handle, size_t size, int dir)
+machvec_dma_sync_single(struct device *hwdev, dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction dir)
{
mb();
}
EXPORT_SYMBOL(machvec_dma_sync_single);
void
-machvec_dma_sync_sg (struct device *hwdev, struct scatterlist *sg, int n, int dir)
+machvec_dma_sync_sg(struct device *hwdev, struct scatterlist *sg, int n,
+ enum dma_data_direction dir)
{
mb();
}
diff --git a/arch/ia64/kernel/pci-dma.c b/arch/ia64/kernel/pci-dma.c
index d0ada06..a647f11 100644
--- a/arch/ia64/kernel/pci-dma.c
+++ b/arch/ia64/kernel/pci-dma.c
@@ -32,9 +32,6 @@
int force_iommu __read_mostly;
#endif
-/* Set this to 1 if there is a HW IOMMU in the system */
-int iommu_detected __read_mostly;
-
/* Dummy device used for NULL arguments (normally ISA). Better would
be probably a smaller DMA mask, but this is bug-to-bug compatible
to i386. */
@@ -44,18 +41,7 @@
.dma_mask = &fallback_dev.coherent_dma_mask,
};
-void __init pci_iommu_alloc(void)
-{
- /*
- * The order of these functions is important for
- * fall-back/fail-over reasons
- */
- detect_intel_iommu();
-
-#ifdef CONFIG_SWIOTLB
- pci_swiotlb_init();
-#endif
-}
+extern struct dma_map_ops intel_dma_ops;
static int __init pci_iommu_init(void)
{
@@ -79,15 +65,12 @@
return;
}
-struct dma_mapping_ops *dma_ops;
-EXPORT_SYMBOL(dma_ops);
-
int iommu_dma_supported(struct device *dev, u64 mask)
{
- struct dma_mapping_ops *ops = get_dma_ops(dev);
+ struct dma_map_ops *ops = platform_dma_get_ops(dev);
- if (ops->dma_supported_op)
- return ops->dma_supported_op(dev, mask);
+ if (ops->dma_supported)
+ return ops->dma_supported(dev, mask);
/* Copied from i386. Doesn't make much sense, because it will
only work for pci_alloc_coherent.
@@ -116,4 +99,31 @@
}
EXPORT_SYMBOL(iommu_dma_supported);
+static int vtd_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+ return 0;
+}
+
+void __init pci_iommu_alloc(void)
+{
+ dma_ops = &intel_dma_ops;
+
+ dma_ops->sync_single_for_cpu = machvec_dma_sync_single;
+ dma_ops->sync_sg_for_cpu = machvec_dma_sync_sg;
+ dma_ops->sync_single_for_device = machvec_dma_sync_single;
+ dma_ops->sync_sg_for_device = machvec_dma_sync_sg;
+ dma_ops->dma_supported = iommu_dma_supported;
+ dma_ops->mapping_error = vtd_dma_mapping_error;
+
+ /*
+ * The order of these functions is important for
+ * fall-back/fail-over reasons
+ */
+ detect_intel_iommu();
+
+#ifdef CONFIG_SWIOTLB
+ pci_swiotlb_init();
+#endif
+}
+
#endif
diff --git a/arch/ia64/kernel/pci-swiotlb.c b/arch/ia64/kernel/pci-swiotlb.c
index 16c5051..d21dea4 100644
--- a/arch/ia64/kernel/pci-swiotlb.c
+++ b/arch/ia64/kernel/pci-swiotlb.c
@@ -13,23 +13,32 @@
int swiotlb __read_mostly;
EXPORT_SYMBOL(swiotlb);
-struct dma_mapping_ops swiotlb_dma_ops = {
- .mapping_error = swiotlb_dma_mapping_error,
+/* Set this to 1 if there is a HW IOMMU in the system */
+int iommu_detected __read_mostly;
+
+struct dma_map_ops swiotlb_dma_ops = {
.alloc_coherent = swiotlb_alloc_coherent,
.free_coherent = swiotlb_free_coherent,
- .map_single = swiotlb_map_single,
- .unmap_single = swiotlb_unmap_single,
+ .map_page = swiotlb_map_page,
+ .unmap_page = swiotlb_unmap_page,
+ .map_sg = swiotlb_map_sg_attrs,
+ .unmap_sg = swiotlb_unmap_sg_attrs,
.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
.sync_single_for_device = swiotlb_sync_single_for_device,
.sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu,
.sync_single_range_for_device = swiotlb_sync_single_range_for_device,
.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
.sync_sg_for_device = swiotlb_sync_sg_for_device,
- .map_sg = swiotlb_map_sg,
- .unmap_sg = swiotlb_unmap_sg,
- .dma_supported_op = swiotlb_dma_supported,
+ .dma_supported = swiotlb_dma_supported,
+ .mapping_error = swiotlb_dma_mapping_error,
};
+void __init swiotlb_dma_init(void)
+{
+ dma_ops = &swiotlb_dma_ops;
+ swiotlb_init();
+}
+
void __init pci_swiotlb_init(void)
{
if (!iommu_detected) {
diff --git a/arch/ia64/sn/pci/pci_dma.c b/arch/ia64/sn/pci/pci_dma.c
index 53ebb64..9c788f9 100644
--- a/arch/ia64/sn/pci/pci_dma.c
+++ b/arch/ia64/sn/pci/pci_dma.c
@@ -10,7 +10,7 @@
*/
#include <linux/module.h>
-#include <linux/dma-attrs.h>
+#include <linux/dma-mapping.h>
#include <asm/dma.h>
#include <asm/sn/intr.h>
#include <asm/sn/pcibus_provider_defs.h>
@@ -31,7 +31,7 @@
* this function. Of course, SN only supports devices that have 32 or more
* address bits when using the PMU.
*/
-int sn_dma_supported(struct device *dev, u64 mask)
+static int sn_dma_supported(struct device *dev, u64 mask)
{
BUG_ON(dev->bus != &pci_bus_type);
@@ -39,7 +39,6 @@
return 0;
return 1;
}
-EXPORT_SYMBOL(sn_dma_supported);
/**
* sn_dma_set_mask - set the DMA mask
@@ -75,8 +74,8 @@
* queue for a SCSI controller). See Documentation/DMA-API.txt for
* more information.
*/
-void *sn_dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t * dma_handle, gfp_t flags)
+static void *sn_dma_alloc_coherent(struct device *dev, size_t size,
+ dma_addr_t * dma_handle, gfp_t flags)
{
void *cpuaddr;
unsigned long phys_addr;
@@ -124,7 +123,6 @@
return cpuaddr;
}
-EXPORT_SYMBOL(sn_dma_alloc_coherent);
/**
* sn_pci_free_coherent - free memory associated with coherent DMAable region
@@ -136,8 +134,8 @@
* Frees the memory allocated by dma_alloc_coherent(), potentially unmapping
* any associated IOMMU mappings.
*/
-void sn_dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
- dma_addr_t dma_handle)
+static void sn_dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
+ dma_addr_t dma_handle)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev);
@@ -147,7 +145,6 @@
provider->dma_unmap(pdev, dma_handle, 0);
free_pages((unsigned long)cpu_addr, get_order(size));
}
-EXPORT_SYMBOL(sn_dma_free_coherent);
/**
* sn_dma_map_single_attrs - map a single page for DMA
@@ -173,10 +170,12 @@
* TODO: simplify our interface;
* figure out how to save dmamap handle so can use two step.
*/
-dma_addr_t sn_dma_map_single_attrs(struct device *dev, void *cpu_addr,
- size_t size, int direction,
- struct dma_attrs *attrs)
+static dma_addr_t sn_dma_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
+ void *cpu_addr = page_address(page) + offset;
dma_addr_t dma_addr;
unsigned long phys_addr;
struct pci_dev *pdev = to_pci_dev(dev);
@@ -201,7 +200,6 @@
}
return dma_addr;
}
-EXPORT_SYMBOL(sn_dma_map_single_attrs);
/**
* sn_dma_unmap_single_attrs - unamp a DMA mapped page
@@ -215,21 +213,20 @@
* by @dma_handle into the coherence domain. On SN, we're always cache
* coherent, so we just need to free any ATEs associated with this mapping.
*/
-void sn_dma_unmap_single_attrs(struct device *dev, dma_addr_t dma_addr,
- size_t size, int direction,
- struct dma_attrs *attrs)
+static void sn_dma_unmap_page(struct device *dev, dma_addr_t dma_addr,
+ size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev);
BUG_ON(dev->bus != &pci_bus_type);
- provider->dma_unmap(pdev, dma_addr, direction);
+ provider->dma_unmap(pdev, dma_addr, dir);
}
-EXPORT_SYMBOL(sn_dma_unmap_single_attrs);
/**
- * sn_dma_unmap_sg_attrs - unmap a DMA scatterlist
+ * sn_dma_unmap_sg - unmap a DMA scatterlist
* @dev: device to unmap
* @sg: scatterlist to unmap
* @nhwentries: number of scatterlist entries
@@ -238,9 +235,9 @@
*
* Unmap a set of streaming mode DMA translations.
*/
-void sn_dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sgl,
- int nhwentries, int direction,
- struct dma_attrs *attrs)
+static void sn_dma_unmap_sg(struct device *dev, struct scatterlist *sgl,
+ int nhwentries, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
int i;
struct pci_dev *pdev = to_pci_dev(dev);
@@ -250,15 +247,14 @@
BUG_ON(dev->bus != &pci_bus_type);
for_each_sg(sgl, sg, nhwentries, i) {
- provider->dma_unmap(pdev, sg->dma_address, direction);
+ provider->dma_unmap(pdev, sg->dma_address, dir);
sg->dma_address = (dma_addr_t) NULL;
sg->dma_length = 0;
}
}
-EXPORT_SYMBOL(sn_dma_unmap_sg_attrs);
/**
- * sn_dma_map_sg_attrs - map a scatterlist for DMA
+ * sn_dma_map_sg - map a scatterlist for DMA
* @dev: device to map for
* @sg: scatterlist to map
* @nhwentries: number of entries
@@ -272,8 +268,9 @@
*
* Maps each entry of @sg for DMA.
*/
-int sn_dma_map_sg_attrs(struct device *dev, struct scatterlist *sgl,
- int nhwentries, int direction, struct dma_attrs *attrs)
+static int sn_dma_map_sg(struct device *dev, struct scatterlist *sgl,
+ int nhwentries, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
unsigned long phys_addr;
struct scatterlist *saved_sg = sgl, *sg;
@@ -310,8 +307,7 @@
* Free any successfully allocated entries.
*/
if (i > 0)
- sn_dma_unmap_sg_attrs(dev, saved_sg, i,
- direction, attrs);
+ sn_dma_unmap_sg(dev, saved_sg, i, dir, attrs);
return 0;
}
@@ -320,41 +316,36 @@
return nhwentries;
}
-EXPORT_SYMBOL(sn_dma_map_sg_attrs);
-void sn_dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
- size_t size, int direction)
+static void sn_dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
+ size_t size, enum dma_data_direction dir)
{
BUG_ON(dev->bus != &pci_bus_type);
}
-EXPORT_SYMBOL(sn_dma_sync_single_for_cpu);
-void sn_dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
- size_t size, int direction)
+static void sn_dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
+ size_t size,
+ enum dma_data_direction dir)
{
BUG_ON(dev->bus != &pci_bus_type);
}
-EXPORT_SYMBOL(sn_dma_sync_single_for_device);
-void sn_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
- int nelems, int direction)
+static void sn_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
+ int nelems, enum dma_data_direction dir)
{
BUG_ON(dev->bus != &pci_bus_type);
}
-EXPORT_SYMBOL(sn_dma_sync_sg_for_cpu);
-void sn_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
- int nelems, int direction)
+static void sn_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
+ int nelems, enum dma_data_direction dir)
{
BUG_ON(dev->bus != &pci_bus_type);
}
-EXPORT_SYMBOL(sn_dma_sync_sg_for_device);
-int sn_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
+static int sn_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return 0;
}
-EXPORT_SYMBOL(sn_dma_mapping_error);
char *sn_pci_get_legacy_mem(struct pci_bus *bus)
{
@@ -465,3 +456,23 @@
out:
return ret;
}
+
+static struct dma_map_ops sn_dma_ops = {
+ .alloc_coherent = sn_dma_alloc_coherent,
+ .free_coherent = sn_dma_free_coherent,
+ .map_page = sn_dma_map_page,
+ .unmap_page = sn_dma_unmap_page,
+ .map_sg = sn_dma_map_sg,
+ .unmap_sg = sn_dma_unmap_sg,
+ .sync_single_for_cpu = sn_dma_sync_single_for_cpu,
+ .sync_sg_for_cpu = sn_dma_sync_sg_for_cpu,
+ .sync_single_for_device = sn_dma_sync_single_for_device,
+ .sync_sg_for_device = sn_dma_sync_sg_for_device,
+ .mapping_error = sn_dma_mapping_error,
+ .dma_supported = sn_dma_supported,
+};
+
+void sn_dma_init(void)
+{
+ dma_ops = &sn_dma_ops;
+}
diff --git a/arch/x86/include/asm/device.h b/arch/x86/include/asm/device.h
index 3c034f4..4994a20 100644
--- a/arch/x86/include/asm/device.h
+++ b/arch/x86/include/asm/device.h
@@ -6,7 +6,7 @@
void *acpi_handle;
#endif
#ifdef CONFIG_X86_64
-struct dma_mapping_ops *dma_ops;
+struct dma_map_ops *dma_ops;
#endif
#ifdef CONFIG_DMAR
void *iommu; /* hook for IOMMU specific extension */
diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h
index 4035357..5a34780 100644
--- a/arch/x86/include/asm/dma-mapping.h
+++ b/arch/x86/include/asm/dma-mapping.h
@@ -7,6 +7,7 @@
*/
#include <linux/scatterlist.h>
+#include <linux/dma-attrs.h>
#include <asm/io.h>
#include <asm/swiotlb.h>
#include <asm-generic/dma-coherent.h>
@@ -16,47 +17,9 @@
extern struct device x86_dma_fallback_dev;
extern int panic_on_overflow;
-struct dma_mapping_ops {
- int (*mapping_error)(struct device *dev,
- dma_addr_t dma_addr);
- void* (*alloc_coherent)(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp);
- void (*free_coherent)(struct device *dev, size_t size,
- void *vaddr, dma_addr_t dma_handle);
- dma_addr_t (*map_single)(struct device *hwdev, phys_addr_t ptr,
- size_t size, int direction);
- void (*unmap_single)(struct device *dev, dma_addr_t addr,
- size_t size, int direction);
- void (*sync_single_for_cpu)(struct device *hwdev,
- dma_addr_t dma_handle, size_t size,
- int direction);
- void (*sync_single_for_device)(struct device *hwdev,
- dma_addr_t dma_handle, size_t size,
- int direction);
- void (*sync_single_range_for_cpu)(struct device *hwdev,
- dma_addr_t dma_handle, unsigned long offset,
- size_t size, int direction);
- void (*sync_single_range_for_device)(struct device *hwdev,
- dma_addr_t dma_handle, unsigned long offset,
- size_t size, int direction);
- void (*sync_sg_for_cpu)(struct device *hwdev,
- struct scatterlist *sg, int nelems,
- int direction);
- void (*sync_sg_for_device)(struct device *hwdev,
- struct scatterlist *sg, int nelems,
- int direction);
- int (*map_sg)(struct device *hwdev, struct scatterlist *sg,
- int nents, int direction);
- void (*unmap_sg)(struct device *hwdev,
- struct scatterlist *sg, int nents,
- int direction);
- int (*dma_supported)(struct device *hwdev, u64 mask);
- int is_phys;
-};
+extern struct dma_map_ops *dma_ops;
-extern struct dma_mapping_ops *dma_ops;
-
-static inline struct dma_mapping_ops *get_dma_ops(struct device *dev)
+static inline struct dma_map_ops *get_dma_ops(struct device *dev)
{
#ifdef CONFIG_X86_32
return dma_ops;
@@ -71,7 +34,7 @@
/* Make sure we keep the same behaviour */
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
- struct dma_mapping_ops *ops = get_dma_ops(dev);
+ struct dma_map_ops *ops = get_dma_ops(dev);
if (ops->mapping_error)
return ops->mapping_error(dev, dma_addr);
@@ -90,137 +53,139 @@
static inline dma_addr_t
dma_map_single(struct device *hwdev, void *ptr, size_t size,
- int direction)
+ enum dma_data_direction dir)
{
- struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+ struct dma_map_ops *ops = get_dma_ops(hwdev);
- BUG_ON(!valid_dma_direction(direction));
- return ops->map_single(hwdev, virt_to_phys(ptr), size, direction);
+ BUG_ON(!valid_dma_direction(dir));
+ return ops->map_page(hwdev, virt_to_page(ptr),
+ (unsigned long)ptr & ~PAGE_MASK, size,
+ dir, NULL);
}
static inline void
dma_unmap_single(struct device *dev, dma_addr_t addr, size_t size,
- int direction)
+ enum dma_data_direction dir)
{
- struct dma_mapping_ops *ops = get_dma_ops(dev);
+ struct dma_map_ops *ops = get_dma_ops(dev);
- BUG_ON(!valid_dma_direction(direction));
- if (ops->unmap_single)
- ops->unmap_single(dev, addr, size, direction);
+ BUG_ON(!valid_dma_direction(dir));
+ if (ops->unmap_page)
+ ops->unmap_page(dev, addr, size, dir, NULL);
}
static inline int
dma_map_sg(struct device *hwdev, struct scatterlist *sg,
- int nents, int direction)
+ int nents, enum dma_data_direction dir)
{
- struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+ struct dma_map_ops *ops = get_dma_ops(hwdev);
- BUG_ON(!valid_dma_direction(direction));
- return ops->map_sg(hwdev, sg, nents, direction);
+ BUG_ON(!valid_dma_direction(dir));
+ return ops->map_sg(hwdev, sg, nents, dir, NULL);
}
static inline void
dma_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
- int direction)
+ enum dma_data_direction dir)
{
- struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+ struct dma_map_ops *ops = get_dma_ops(hwdev);
- BUG_ON(!valid_dma_direction(direction));
+ BUG_ON(!valid_dma_direction(dir));
if (ops->unmap_sg)
- ops->unmap_sg(hwdev, sg, nents, direction);
+ ops->unmap_sg(hwdev, sg, nents, dir, NULL);
}
static inline void
dma_sync_single_for_cpu(struct device *hwdev, dma_addr_t dma_handle,
- size_t size, int direction)
+ size_t size, enum dma_data_direction dir)
{
- struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+ struct dma_map_ops *ops = get_dma_ops(hwdev);
- BUG_ON(!valid_dma_direction(direction));
+ BUG_ON(!valid_dma_direction(dir));
if (ops->sync_single_for_cpu)
- ops->sync_single_for_cpu(hwdev, dma_handle, size, direction);
+ ops->sync_single_for_cpu(hwdev, dma_handle, size, dir);
flush_write_buffers();
}
static inline void
dma_sync_single_for_device(struct device *hwdev, dma_addr_t dma_handle,
- size_t size, int direction)
+ size_t size, enum dma_data_direction dir)
{
- struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+ struct dma_map_ops *ops = get_dma_ops(hwdev);
- BUG_ON(!valid_dma_direction(direction));
+ BUG_ON(!valid_dma_direction(dir));
if (ops->sync_single_for_device)
- ops->sync_single_for_device(hwdev, dma_handle, size, direction);
+ ops->sync_single_for_device(hwdev, dma_handle, size, dir);
flush_write_buffers();
}
static inline void
dma_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dma_handle,
- unsigned long offset, size_t size, int direction)
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir)
{
- struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+ struct dma_map_ops *ops = get_dma_ops(hwdev);
- BUG_ON(!valid_dma_direction(direction));
+ BUG_ON(!valid_dma_direction(dir));
if (ops->sync_single_range_for_cpu)
ops->sync_single_range_for_cpu(hwdev, dma_handle, offset,
- size, direction);
+ size, dir);
flush_write_buffers();
}
static inline void
dma_sync_single_range_for_device(struct device *hwdev, dma_addr_t dma_handle,
unsigned long offset, size_t size,
- int direction)
+ enum dma_data_direction dir)
{
- struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+ struct dma_map_ops *ops = get_dma_ops(hwdev);
- BUG_ON(!valid_dma_direction(direction));
+ BUG_ON(!valid_dma_direction(dir));
if (ops->sync_single_range_for_device)
ops->sync_single_range_for_device(hwdev, dma_handle,
- offset, size, direction);
+ offset, size, dir);
flush_write_buffers();
}
static inline void
dma_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
- int nelems, int direction)
+ int nelems, enum dma_data_direction dir)
{
- struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+ struct dma_map_ops *ops = get_dma_ops(hwdev);
- BUG_ON(!valid_dma_direction(direction));
+ BUG_ON(!valid_dma_direction(dir));
if (ops->sync_sg_for_cpu)
- ops->sync_sg_for_cpu(hwdev, sg, nelems, direction);
+ ops->sync_sg_for_cpu(hwdev, sg, nelems, dir);
flush_write_buffers();
}
static inline void
dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
- int nelems, int direction)
+ int nelems, enum dma_data_direction dir)
{
- struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+ struct dma_map_ops *ops = get_dma_ops(hwdev);
- BUG_ON(!valid_dma_direction(direction));
+ BUG_ON(!valid_dma_direction(dir));
if (ops->sync_sg_for_device)
- ops->sync_sg_for_device(hwdev, sg, nelems, direction);
+ ops->sync_sg_for_device(hwdev, sg, nelems, dir);
flush_write_buffers();
}
static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
size_t offset, size_t size,
- int direction)
+ enum dma_data_direction dir)
{
- struct dma_mapping_ops *ops = get_dma_ops(dev);
+ struct dma_map_ops *ops = get_dma_ops(dev);
- BUG_ON(!valid_dma_direction(direction));
- return ops->map_single(dev, page_to_phys(page) + offset,
- size, direction);
+ BUG_ON(!valid_dma_direction(dir));
+ return ops->map_page(dev, page, offset, size, dir, NULL);
}
static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
- size_t size, int direction)
+ size_t size, enum dma_data_direction dir)
{
- dma_unmap_single(dev, addr, size, direction);
+ dma_unmap_single(dev, addr, size, dir);
}
static inline void
@@ -266,7 +231,7 @@
dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
gfp_t gfp)
{
- struct dma_mapping_ops *ops = get_dma_ops(dev);
+ struct dma_map_ops *ops = get_dma_ops(dev);
void *memory;
gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
@@ -292,7 +257,7 @@
static inline void dma_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t bus)
{
- struct dma_mapping_ops *ops = get_dma_ops(dev);
+ struct dma_map_ops *ops = get_dma_ops(dev);
WARN_ON(irqs_disabled()); /* for portability */
diff --git a/arch/x86/include/asm/iommu.h b/arch/x86/include/asm/iommu.h
index a6ee9e6..af326a2 100644
--- a/arch/x86/include/asm/iommu.h
+++ b/arch/x86/include/asm/iommu.h
@@ -3,7 +3,7 @@
extern void pci_iommu_shutdown(void);
extern void no_iommu_init(void);
-extern struct dma_mapping_ops nommu_dma_ops;
+extern struct dma_map_ops nommu_dma_ops;
extern int force_iommu, no_iommu;
extern int iommu_detected;
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 5113c08..008e522 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -22,6 +22,7 @@
#include <linux/bitops.h>
#include <linux/debugfs.h>
#include <linux/scatterlist.h>
+#include <linux/dma-mapping.h>
#include <linux/iommu-helper.h>
#ifdef CONFIG_IOMMU_API
#include <linux/iommu.h>
@@ -1297,8 +1298,10 @@
/*
* The exported map_single function for dma_ops.
*/
-static dma_addr_t map_single(struct device *dev, phys_addr_t paddr,
- size_t size, int dir)
+static dma_addr_t map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
unsigned long flags;
struct amd_iommu *iommu;
@@ -1306,6 +1309,7 @@
u16 devid;
dma_addr_t addr;
u64 dma_mask;
+ phys_addr_t paddr = page_to_phys(page) + offset;
INC_STATS_COUNTER(cnt_map_single);
@@ -1340,8 +1344,8 @@
/*
* The exported unmap_single function for dma_ops.
*/
-static void unmap_single(struct device *dev, dma_addr_t dma_addr,
- size_t size, int dir)
+static void unmap_page(struct device *dev, dma_addr_t dma_addr, size_t size,
+ enum dma_data_direction dir, struct dma_attrs *attrs)
{
unsigned long flags;
struct amd_iommu *iommu;
@@ -1390,7 +1394,8 @@
* lists).
*/
static int map_sg(struct device *dev, struct scatterlist *sglist,
- int nelems, int dir)
+ int nelems, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
unsigned long flags;
struct amd_iommu *iommu;
@@ -1457,7 +1462,8 @@
* lists).
*/
static void unmap_sg(struct device *dev, struct scatterlist *sglist,
- int nelems, int dir)
+ int nelems, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
unsigned long flags;
struct amd_iommu *iommu;
@@ -1644,11 +1650,11 @@
}
}
-static struct dma_mapping_ops amd_iommu_dma_ops = {
+static struct dma_map_ops amd_iommu_dma_ops = {
.alloc_coherent = alloc_coherent,
.free_coherent = free_coherent,
- .map_single = map_single,
- .unmap_single = unmap_single,
+ .map_page = map_page,
+ .unmap_page = unmap_page,
.map_sg = map_sg,
.unmap_sg = unmap_sg,
.dma_supported = amd_iommu_dma_supported,
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index d28bbdc..755c21e 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -380,8 +380,9 @@
return tbl;
}
-static void calgary_unmap_sg(struct device *dev,
- struct scatterlist *sglist, int nelems, int direction)
+static void calgary_unmap_sg(struct device *dev, struct scatterlist *sglist,
+ int nelems,enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
struct iommu_table *tbl = find_iommu_table(dev);
struct scatterlist *s;
@@ -404,7 +405,8 @@
}
static int calgary_map_sg(struct device *dev, struct scatterlist *sg,
- int nelems, int direction)
+ int nelems, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
struct iommu_table *tbl = find_iommu_table(dev);
struct scatterlist *s;
@@ -429,15 +431,14 @@
s->dma_address = (entry << PAGE_SHIFT) | s->offset;
/* insert into HW table */
- tce_build(tbl, entry, npages, vaddr & PAGE_MASK,
- direction);
+ tce_build(tbl, entry, npages, vaddr & PAGE_MASK, dir);
s->dma_length = s->length;
}
return nelems;
error:
- calgary_unmap_sg(dev, sg, nelems, direction);
+ calgary_unmap_sg(dev, sg, nelems, dir, NULL);
for_each_sg(sg, s, nelems, i) {
sg->dma_address = bad_dma_address;
sg->dma_length = 0;
@@ -445,10 +446,12 @@
return 0;
}
-static dma_addr_t calgary_map_single(struct device *dev, phys_addr_t paddr,
- size_t size, int direction)
+static dma_addr_t calgary_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
- void *vaddr = phys_to_virt(paddr);
+ void *vaddr = page_address(page) + offset;
unsigned long uaddr;
unsigned int npages;
struct iommu_table *tbl = find_iommu_table(dev);
@@ -456,17 +459,18 @@
uaddr = (unsigned long)vaddr;
npages = iommu_num_pages(uaddr, size, PAGE_SIZE);
- return iommu_alloc(dev, tbl, vaddr, npages, direction);
+ return iommu_alloc(dev, tbl, vaddr, npages, dir);
}
-static void calgary_unmap_single(struct device *dev, dma_addr_t dma_handle,
- size_t size, int direction)
+static void calgary_unmap_page(struct device *dev, dma_addr_t dma_addr,
+ size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
struct iommu_table *tbl = find_iommu_table(dev);
unsigned int npages;
- npages = iommu_num_pages(dma_handle, size, PAGE_SIZE);
- iommu_free(tbl, dma_handle, npages);
+ npages = iommu_num_pages(dma_addr, size, PAGE_SIZE);
+ iommu_free(tbl, dma_addr, npages);
}
static void* calgary_alloc_coherent(struct device *dev, size_t size,
@@ -515,13 +519,13 @@
free_pages((unsigned long)vaddr, get_order(size));
}
-static struct dma_mapping_ops calgary_dma_ops = {
+static struct dma_map_ops calgary_dma_ops = {
.alloc_coherent = calgary_alloc_coherent,
.free_coherent = calgary_free_coherent,
- .map_single = calgary_map_single,
- .unmap_single = calgary_unmap_single,
.map_sg = calgary_map_sg,
.unmap_sg = calgary_unmap_sg,
+ .map_page = calgary_map_page,
+ .unmap_page = calgary_unmap_page,
};
static inline void __iomem * busno_to_bbar(unsigned char num)
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index b254285..f293a8d 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -12,7 +12,7 @@
static int forbid_dac __read_mostly;
-struct dma_mapping_ops *dma_ops;
+struct dma_map_ops *dma_ops;
EXPORT_SYMBOL(dma_ops);
static int iommu_sac_force __read_mostly;
@@ -224,7 +224,7 @@
int dma_supported(struct device *dev, u64 mask)
{
- struct dma_mapping_ops *ops = get_dma_ops(dev);
+ struct dma_map_ops *ops = get_dma_ops(dev);
#ifdef CONFIG_PCI
if (mask > 0xffffffff && forbid_dac > 0) {
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 00c2bcd..8cb3e45 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -255,10 +255,13 @@
}
/* Map a single area into the IOMMU */
-static dma_addr_t
-gart_map_single(struct device *dev, phys_addr_t paddr, size_t size, int dir)
+static dma_addr_t gart_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
unsigned long bus;
+ phys_addr_t paddr = page_to_phys(page) + offset;
if (!dev)
dev = &x86_dma_fallback_dev;
@@ -275,8 +278,9 @@
/*
* Free a DMA mapping.
*/
-static void gart_unmap_single(struct device *dev, dma_addr_t dma_addr,
- size_t size, int direction)
+static void gart_unmap_page(struct device *dev, dma_addr_t dma_addr,
+ size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
unsigned long iommu_page;
int npages;
@@ -298,8 +302,8 @@
/*
* Wrapper for pci_unmap_single working with scatterlists.
*/
-static void
-gart_unmap_sg(struct device *dev, struct scatterlist *sg, int nents, int dir)
+static void gart_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
+ enum dma_data_direction dir, struct dma_attrs *attrs)
{
struct scatterlist *s;
int i;
@@ -307,7 +311,7 @@
for_each_sg(sg, s, nents, i) {
if (!s->dma_length || !s->length)
break;
- gart_unmap_single(dev, s->dma_address, s->dma_length, dir);
+ gart_unmap_page(dev, s->dma_address, s->dma_length, dir, NULL);
}
}
@@ -329,7 +333,7 @@
addr = dma_map_area(dev, addr, s->length, dir, 0);
if (addr == bad_dma_address) {
if (i > 0)
- gart_unmap_sg(dev, sg, i, dir);
+ gart_unmap_sg(dev, sg, i, dir, NULL);
nents = 0;
sg[0].dma_length = 0;
break;
@@ -400,8 +404,8 @@
* DMA map all entries in a scatterlist.
* Merge chunks that have page aligned sizes into a continuous mapping.
*/
-static int
-gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, int dir)
+static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents,
+ enum dma_data_direction dir, struct dma_attrs *attrs)
{
struct scatterlist *s, *ps, *start_sg, *sgmap;
int need = 0, nextneed, i, out, start;
@@ -468,7 +472,7 @@
error:
flush_gart();
- gart_unmap_sg(dev, sg, out, dir);
+ gart_unmap_sg(dev, sg, out, dir, NULL);
/* When it was forced or merged try again in a dumb way */
if (force_iommu || iommu_merge) {
@@ -521,7 +525,7 @@
gart_free_coherent(struct device *dev, size_t size, void *vaddr,
dma_addr_t dma_addr)
{
- gart_unmap_single(dev, dma_addr, size, DMA_BIDIRECTIONAL);
+ gart_unmap_page(dev, dma_addr, size, DMA_BIDIRECTIONAL, NULL);
free_pages((unsigned long)vaddr, get_order(size));
}
@@ -707,11 +711,11 @@
return -1;
}
-static struct dma_mapping_ops gart_dma_ops = {
- .map_single = gart_map_single,
- .unmap_single = gart_unmap_single,
+static struct dma_map_ops gart_dma_ops = {
.map_sg = gart_map_sg,
.unmap_sg = gart_unmap_sg,
+ .map_page = gart_map_page,
+ .unmap_page = gart_unmap_page,
.alloc_coherent = gart_alloc_coherent,
.free_coherent = gart_free_coherent,
};
diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c
index c70ab5a..fe50214 100644
--- a/arch/x86/kernel/pci-nommu.c
+++ b/arch/x86/kernel/pci-nommu.c
@@ -25,19 +25,19 @@
return 1;
}
-static dma_addr_t
-nommu_map_single(struct device *hwdev, phys_addr_t paddr, size_t size,
- int direction)
+static dma_addr_t nommu_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
- dma_addr_t bus = paddr;
+ dma_addr_t bus = page_to_phys(page) + offset;
WARN_ON(size == 0);
- if (!check_addr("map_single", hwdev, bus, size))
- return bad_dma_address;
+ if (!check_addr("map_single", dev, bus, size))
+ return bad_dma_address;
flush_write_buffers();
return bus;
}
-
/* Map a set of buffers described by scatterlist in streaming
* mode for DMA. This is the scatter-gather version of the
* above pci_map_single interface. Here the scatter gather list
@@ -54,7 +54,8 @@
* the same here.
*/
static int nommu_map_sg(struct device *hwdev, struct scatterlist *sg,
- int nents, int direction)
+ int nents, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
struct scatterlist *s;
int i;
@@ -78,11 +79,11 @@
free_pages((unsigned long)vaddr, get_order(size));
}
-struct dma_mapping_ops nommu_dma_ops = {
+struct dma_map_ops nommu_dma_ops = {
.alloc_coherent = dma_generic_alloc_coherent,
.free_coherent = nommu_free_coherent,
- .map_single = nommu_map_single,
.map_sg = nommu_map_sg,
+ .map_page = nommu_map_page,
.is_phys = 1,
};
diff --git a/arch/x86/kernel/pci-swiotlb_64.c b/arch/x86/kernel/pci-swiotlb_64.c
index d59c917..5e32c4f 100644
--- a/arch/x86/kernel/pci-swiotlb_64.c
+++ b/arch/x86/kernel/pci-swiotlb_64.c
@@ -38,13 +38,6 @@
return 0;
}
-static dma_addr_t
-swiotlb_map_single_phys(struct device *hwdev, phys_addr_t paddr, size_t size,
- int direction)
-{
- return swiotlb_map_single(hwdev, phys_to_virt(paddr), size, direction);
-}
-
static void *x86_swiotlb_alloc_coherent(struct device *hwdev, size_t size,
dma_addr_t *dma_handle, gfp_t flags)
{
@@ -57,20 +50,20 @@
return swiotlb_alloc_coherent(hwdev, size, dma_handle, flags);
}
-struct dma_mapping_ops swiotlb_dma_ops = {
+struct dma_map_ops swiotlb_dma_ops = {
.mapping_error = swiotlb_dma_mapping_error,
.alloc_coherent = x86_swiotlb_alloc_coherent,
.free_coherent = swiotlb_free_coherent,
- .map_single = swiotlb_map_single_phys,
- .unmap_single = swiotlb_unmap_single,
.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
.sync_single_for_device = swiotlb_sync_single_for_device,
.sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu,
.sync_single_range_for_device = swiotlb_sync_single_range_for_device,
.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
.sync_sg_for_device = swiotlb_sync_sg_for_device,
- .map_sg = swiotlb_map_sg,
- .unmap_sg = swiotlb_unmap_sg,
+ .map_sg = swiotlb_map_sg_attrs,
+ .unmap_sg = swiotlb_unmap_sg_attrs,
+ .map_page = swiotlb_map_page,
+ .unmap_page = swiotlb_unmap_page,
.dma_supported = NULL,
};
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 235fb7a..b9a5629 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -2273,6 +2273,15 @@
return 0;
}
+static dma_addr_t intel_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs)
+{
+ return __intel_map_single(dev, page_to_phys(page) + offset, size,
+ dir, to_pci_dev(dev)->dma_mask);
+}
+
dma_addr_t intel_map_single(struct device *hwdev, phys_addr_t paddr,
size_t size, int dir)
{
@@ -2341,8 +2350,9 @@
spin_unlock_irqrestore(&async_umap_flush_lock, flags);
}
-void intel_unmap_single(struct device *dev, dma_addr_t dev_addr, size_t size,
- int dir)
+static void intel_unmap_page(struct device *dev, dma_addr_t dev_addr,
+ size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct dmar_domain *domain;
@@ -2386,6 +2396,12 @@
}
}
+void intel_unmap_single(struct device *dev, dma_addr_t dev_addr, size_t size,
+ int dir)
+{
+ intel_unmap_page(dev, dev_addr, size, dir, NULL);
+}
+
void *intel_alloc_coherent(struct device *hwdev, size_t size,
dma_addr_t *dma_handle, gfp_t flags)
{
@@ -2425,7 +2441,8 @@
#define SG_ENT_VIRT_ADDRESS(sg) (sg_virt((sg)))
void intel_unmap_sg(struct device *hwdev, struct scatterlist *sglist,
- int nelems, int dir)
+ int nelems, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
int i;
struct pci_dev *pdev = to_pci_dev(hwdev);
@@ -2483,7 +2500,7 @@
}
int intel_map_sg(struct device *hwdev, struct scatterlist *sglist, int nelems,
- int dir)
+ enum dma_data_direction dir, struct dma_attrs *attrs)
{
void *addr;
int i;
@@ -2563,13 +2580,13 @@
return nelems;
}
-static struct dma_mapping_ops intel_dma_ops = {
+struct dma_map_ops intel_dma_ops = {
.alloc_coherent = intel_alloc_coherent,
.free_coherent = intel_free_coherent,
- .map_single = intel_map_single,
- .unmap_single = intel_unmap_single,
.map_sg = intel_map_sg,
.unmap_sg = intel_unmap_sg,
+ .map_page = intel_map_page,
+ .unmap_page = intel_unmap_page,
};
static inline int iommu_domain_cache_init(void)
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index ba9114e..d7d090d 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -3,6 +3,8 @@
#include <linux/device.h>
#include <linux/err.h>
+#include <linux/dma-attrs.h>
+#include <linux/scatterlist.h>
/* These definitions mirror those in pci.h, so they can be used
* interchangeably with their PCI_ counterparts */
@@ -13,6 +15,52 @@
DMA_NONE = 3,
};
+struct dma_map_ops {
+ void* (*alloc_coherent)(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, gfp_t gfp);
+ void (*free_coherent)(struct device *dev, size_t size,
+ void *vaddr, dma_addr_t dma_handle);
+ dma_addr_t (*map_page)(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs);
+ void (*unmap_page)(struct device *dev, dma_addr_t dma_handle,
+ size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs);
+ int (*map_sg)(struct device *dev, struct scatterlist *sg,
+ int nents, enum dma_data_direction dir,
+ struct dma_attrs *attrs);
+ void (*unmap_sg)(struct device *dev,
+ struct scatterlist *sg, int nents,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs);
+ void (*sync_single_for_cpu)(struct device *dev,
+ dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction dir);
+ void (*sync_single_for_device)(struct device *dev,
+ dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction dir);
+ void (*sync_single_range_for_cpu)(struct device *dev,
+ dma_addr_t dma_handle,
+ unsigned long offset,
+ size_t size,
+ enum dma_data_direction dir);
+ void (*sync_single_range_for_device)(struct device *dev,
+ dma_addr_t dma_handle,
+ unsigned long offset,
+ size_t size,
+ enum dma_data_direction dir);
+ void (*sync_sg_for_cpu)(struct device *dev,
+ struct scatterlist *sg, int nents,
+ enum dma_data_direction dir);
+ void (*sync_sg_for_device)(struct device *dev,
+ struct scatterlist *sg, int nents,
+ enum dma_data_direction dir);
+ int (*mapping_error)(struct device *dev, dma_addr_t dma_addr);
+ int (*dma_supported)(struct device *dev, u64 mask);
+ int is_phys;
+};
+
#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
/*
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index c4f6c10..a254db1 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -334,7 +334,9 @@
extern void intel_free_coherent(struct device *, size_t, void *, dma_addr_t);
extern dma_addr_t intel_map_single(struct device *, phys_addr_t, size_t, int);
extern void intel_unmap_single(struct device *, dma_addr_t, size_t, int);
-extern int intel_map_sg(struct device *, struct scatterlist *, int, int);
-extern void intel_unmap_sg(struct device *, struct scatterlist *, int, int);
+extern int intel_map_sg(struct device *, struct scatterlist *, int,
+ enum dma_data_direction, struct dma_attrs *);
+extern void intel_unmap_sg(struct device *, struct scatterlist *, int,
+ enum dma_data_direction, struct dma_attrs *);
#endif
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index dedd3c0..493dc17 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -41,20 +41,13 @@
swiotlb_free_coherent(struct device *hwdev, size_t size,
void *vaddr, dma_addr_t dma_handle);
-extern dma_addr_t
-swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir);
-
-extern void
-swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
- size_t size, int dir);
-
-extern dma_addr_t
-swiotlb_map_single_attrs(struct device *hwdev, void *ptr, size_t size,
- int dir, struct dma_attrs *attrs);
-
-extern void
-swiotlb_unmap_single_attrs(struct device *hwdev, dma_addr_t dev_addr,
- size_t size, int dir, struct dma_attrs *attrs);
+extern dma_addr_t swiotlb_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs);
+extern void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
+ size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs);
extern int
swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nents,
@@ -66,36 +59,38 @@
extern int
swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems,
- int dir, struct dma_attrs *attrs);
+ enum dma_data_direction dir, struct dma_attrs *attrs);
extern void
swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
- int nelems, int dir, struct dma_attrs *attrs);
+ int nelems, enum dma_data_direction dir,
+ struct dma_attrs *attrs);
extern void
swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
- size_t size, int dir);
+ size_t size, enum dma_data_direction dir);
extern void
swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
- int nelems, int dir);
+ int nelems, enum dma_data_direction dir);
extern void
swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
- size_t size, int dir);
+ size_t size, enum dma_data_direction dir);
extern void
swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
- int nelems, int dir);
+ int nelems, enum dma_data_direction dir);
extern void
swiotlb_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
- unsigned long offset, size_t size, int dir);
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir);
extern void
swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,
unsigned long offset, size_t size,
- int dir);
+ enum dma_data_direction dir);
extern int
swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 1f991ac..30fe65e 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -636,11 +636,14 @@
* Once the device is given the dma address, the device owns this memory until
* either swiotlb_unmap_single or swiotlb_dma_sync_single is performed.
*/
-dma_addr_t
-swiotlb_map_single_attrs(struct device *hwdev, void *ptr, size_t size,
- int dir, struct dma_attrs *attrs)
+dma_addr_t swiotlb_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
- dma_addr_t dev_addr = swiotlb_virt_to_bus(hwdev, ptr);
+ phys_addr_t phys = page_to_phys(page) + offset;
+ void *ptr = page_address(page) + offset;
+ dma_addr_t dev_addr = swiotlb_phys_to_bus(dev, phys);
void *map;
BUG_ON(dir == DMA_NONE);
@@ -649,37 +652,30 @@
* we can safely return the device addr and not worry about bounce
* buffering it.
*/
- if (!address_needs_mapping(hwdev, dev_addr, size) &&
+ if (!address_needs_mapping(dev, dev_addr, size) &&
!range_needs_mapping(ptr, size))
return dev_addr;
/*
* Oh well, have to allocate and map a bounce buffer.
*/
- map = map_single(hwdev, virt_to_phys(ptr), size, dir);
+ map = map_single(dev, phys, size, dir);
if (!map) {
- swiotlb_full(hwdev, size, dir, 1);
+ swiotlb_full(dev, size, dir, 1);
map = io_tlb_overflow_buffer;
}
- dev_addr = swiotlb_virt_to_bus(hwdev, map);
+ dev_addr = swiotlb_virt_to_bus(dev, map);
/*
* Ensure that the address returned is DMA'ble
*/
- if (address_needs_mapping(hwdev, dev_addr, size))
+ if (address_needs_mapping(dev, dev_addr, size))
panic("map_single: bounce buffer is not DMA'ble");
return dev_addr;
}
-EXPORT_SYMBOL(swiotlb_map_single_attrs);
-
-dma_addr_t
-swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir)
-{
- return swiotlb_map_single_attrs(hwdev, ptr, size, dir, NULL);
-}
-EXPORT_SYMBOL(swiotlb_map_single);
+EXPORT_SYMBOL_GPL(swiotlb_map_page);
/*
* Unmap a single streaming mode DMA translation. The dma_addr and size must
@@ -689,9 +685,9 @@
* After this call, reads by the cpu to the buffer are guaranteed to see
* whatever the device wrote there.
*/
-void
-swiotlb_unmap_single_attrs(struct device *hwdev, dma_addr_t dev_addr,
- size_t size, int dir, struct dma_attrs *attrs)
+void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
+ size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
char *dma_addr = swiotlb_bus_to_virt(dev_addr);
@@ -701,15 +697,7 @@
else if (dir == DMA_FROM_DEVICE)
dma_mark_clean(dma_addr, size);
}
-EXPORT_SYMBOL(swiotlb_unmap_single_attrs);
-
-void
-swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
- int dir)
-{
- return swiotlb_unmap_single_attrs(hwdev, dev_addr, size, dir, NULL);
-}
-EXPORT_SYMBOL(swiotlb_unmap_single);
+EXPORT_SYMBOL_GPL(swiotlb_unmap_page);
/*
* Make physical memory consistent for a single streaming mode DMA translation
@@ -736,7 +724,7 @@
void
swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
- size_t size, int dir)
+ size_t size, enum dma_data_direction dir)
{
swiotlb_sync_single(hwdev, dev_addr, size, dir, SYNC_FOR_CPU);
}
@@ -744,7 +732,7 @@
void
swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
- size_t size, int dir)
+ size_t size, enum dma_data_direction dir)
{
swiotlb_sync_single(hwdev, dev_addr, size, dir, SYNC_FOR_DEVICE);
}
@@ -769,7 +757,8 @@
void
swiotlb_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
- unsigned long offset, size_t size, int dir)
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir)
{
swiotlb_sync_single_range(hwdev, dev_addr, offset, size, dir,
SYNC_FOR_CPU);
@@ -778,7 +767,8 @@
void
swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,
- unsigned long offset, size_t size, int dir)
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir)
{
swiotlb_sync_single_range(hwdev, dev_addr, offset, size, dir,
SYNC_FOR_DEVICE);
@@ -803,7 +793,7 @@
*/
int
swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems,
- int dir, struct dma_attrs *attrs)
+ enum dma_data_direction dir, struct dma_attrs *attrs)
{
struct scatterlist *sg;
int i;
@@ -850,7 +840,7 @@
*/
void
swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
- int nelems, int dir, struct dma_attrs *attrs)
+ int nelems, enum dma_data_direction dir, struct dma_attrs *attrs)
{
struct scatterlist *sg;
int i;
@@ -902,7 +892,7 @@
void
swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
- int nelems, int dir)
+ int nelems, enum dma_data_direction dir)
{
swiotlb_sync_sg(hwdev, sg, nelems, dir, SYNC_FOR_CPU);
}
@@ -910,7 +900,7 @@
void
swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
- int nelems, int dir)
+ int nelems, enum dma_data_direction dir)
{
swiotlb_sync_sg(hwdev, sg, nelems, dir, SYNC_FOR_DEVICE);
}