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authorLinus Torvalds <torvalds@linux-foundation.org>2009-03-30 13:41:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-03-30 13:41:00 -0700
commit712b0006bf3a9ed0b14a56c3291975e582127766 (patch)
treeaff33e947673137ae21734321e1f036600297223 /arch/ia64/hp
parente1c502482853f84606928f5a2f2eb6da1993cda1 (diff)
parentb0d44c0dbbd52effb731b1c0af9afd56215c48de (diff)
Merge branch 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (60 commits) dma-debug: make memory range checks more consistent dma-debug: warn of unmapping an invalid dma address dma-debug: fix dma_debug_add_bus() definition for !CONFIG_DMA_API_DEBUG dma-debug/x86: register pci bus for dma-debug leak detection dma-debug: add a check dma memory leaks dma-debug: add checks for kernel text and rodata dma-debug: print stacktrace of mapping path on unmap error dma-debug: Documentation update dma-debug: x86 architecture bindings dma-debug: add function to dump dma mappings dma-debug: add checks for sync_single_sg_* dma-debug: add checks for sync_single_range_* dma-debug: add checks for sync_single_* dma-debug: add checking for [alloc|free]_coherent dma-debug: add add checking for map/unmap_sg dma-debug: add checking for map/unmap_page/single dma-debug: add core checking functions dma-debug: add debugfs interface dma-debug: add kernel command line parameters dma-debug: add initialization code ... Fix trivial conflicts due to whitespace changes in arch/x86/kernel/pci-nommu.c
Diffstat (limited to 'arch/ia64/hp')
-rw-r--r--arch/ia64/hp/common/hwsw_iommu.c165
-rw-r--r--arch/ia64/hp/common/sba_iommu.c79
2 files changed, 70 insertions, 174 deletions
diff --git a/arch/ia64/hp/common/hwsw_iommu.c b/arch/ia64/hp/common/hwsw_iommu.c
index 2769dbfd03b..e4a80d82e3d 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 @@ hwsw_init (void)
#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 6d5e6c5630e..56ceb68eb99 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 @@ sba_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt)
*
* See Documentation/PCI/PCI-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 @@ sba_map_single_attrs(struct device *dev, void *addr, size_t size, int dir,
#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 @@ sba_mark_clean(struct ioc *ioc, dma_addr_t iova, size_t size)
*
* See Documentation/PCI/PCI-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 @@ void sba_unmap_single_attrs(struct device *dev, dma_addr_t iova, size_t size,
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 @@ EXPORT_SYMBOL(sba_unmap_single_attrs);
*
* See Documentation/PCI/PCI-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 @@ sba_alloc_coherent (struct device *dev, size_t size, dma_addr_t *dma_handle, gfp
*
* See Documentation/PCI/PCI-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 @@ sba_coalesce_chunks(struct ioc *ioc, struct device *dev,
*
* See Documentation/PCI/PCI-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 @@ int sba_map_sg_attrs(struct device *dev, struct scatterlist *sglist, int nents,
return filled;
}
-EXPORT_SYMBOL(sba_map_sg_attrs);
/**
* sba_unmap_sg_attrs - unmap Scatter/Gather list
@@ -1514,8 +1530,9 @@ EXPORT_SYMBOL(sba_map_sg_attrs);
*
* See Documentation/PCI/PCI-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 @@ void sba_unmap_sg_attrs(struct device *dev, struct scatterlist *sglist,
#endif
}
-EXPORT_SYMBOL(sba_unmap_sg_attrs);
/**************************************************************
*
@@ -2064,6 +2080,8 @@ static struct acpi_driver acpi_sba_ioc_driver = {
},
};
+extern struct dma_map_ops swiotlb_dma_ops;
+
static int __init
sba_init(void)
{
@@ -2077,6 +2095,7 @@ sba_init(void)
* 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 @@ sba_init(void)
* 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 @@ nosbagart(char *str)
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 @@ sba_page_override(char *str)
__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;
+}