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Subject[RFC PATCH 2/3] move swiotlb header file into common code - x86-64 bits
 arch/x86_64/kernel/pci-gart.c    |   22 +++++++++++++--------
include/asm-x86_64/dma-mapping.h | 33 +++++++++++++++++++-------------
include/asm-x86_64/swiotlb.h | 40 +--------------------------------------
3 files changed, 36 insertions(+), 59 deletions(-)
---
diff -Naurp --exclude-from /home/muli/w/dontdiff vanilla/arch/x86_64/kernel/pci-gart.c dma_data_direction.hg/arch/x86_64/kernel/pci-gart.c
--- vanilla/arch/x86_64/kernel/pci-gart.c 2005-11-15 09:52:45.000000000 -0500
+++ dma_data_direction.hg/arch/x86_64/kernel/pci-gart.c 2005-11-18 16:28:06.000000000 -0500
@@ -30,6 +30,7 @@
#include <asm/proto.h>
#include <asm/cacheflush.h>
#include <asm/kdebug.h>
+#include <asm/swiotlb.h>

dma_addr_t bad_dma_address;

@@ -103,7 +104,7 @@ AGPEXTERN __u32 *agp_gatt_table;
static unsigned long next_bit; /* protected by iommu_bitmap_lock */
static int need_flush; /* global flush state. set for each gart wrap */
static dma_addr_t dma_map_area(struct device *dev, unsigned long phys_mem,
- size_t size, int dir, int do_panic);
+ size_t size, enum dma_data_direction dir, int do_panic);

/* 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. */
@@ -326,7 +327,8 @@ void dump_leak(void)
#define CLEAR_LEAK(x)
#endif

-static void iommu_full(struct device *dev, size_t size, int dir, int do_panic)
+static void iommu_full(struct device *dev, size_t size, enum dma_data_direction dir,
+ int do_panic)
{
/*
* Ran out of IOMMU space for this operation. This is very bad.
@@ -386,7 +388,8 @@ static inline int nonforced_iommu(struct
* Caller needs to check if the iommu is needed and flush.
*/
static dma_addr_t dma_map_area(struct device *dev, unsigned long phys_mem,
- size_t size, int dir, int do_panic)
+ size_t size, enum dma_data_direction dir,
+ int do_panic)
{
unsigned long npages = to_pages(phys_mem, size);
unsigned long iommu_page = alloc_iommu(npages);
@@ -409,7 +412,8 @@ static dma_addr_t dma_map_area(struct de
}

/* Map a single area into the IOMMU */
-dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size, int dir)
+dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size,
+ enum dma_data_direction dir)
{
unsigned long phys_mem, bus;

@@ -431,7 +435,7 @@ dma_addr_t dma_map_single(struct device

/* Fallback for dma_map_sg in case of overflow */
static int dma_map_sg_nonforce(struct device *dev, struct scatterlist *sg,
- int nents, int dir)
+ int nents, enum dma_data_direction dir)
{
int i;

@@ -515,7 +519,8 @@ static inline int dma_map_cont(struct sc
* DMA map all entries in a scatterlist.
* Merge chunks that have page aligned sizes into a continuous mapping.
*/
-int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, int dir)
+int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
+ enum dma_data_direction dir)
{
int i;
int out;
@@ -587,7 +592,7 @@ error:
* Free a DMA mapping.
*/
void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
- size_t size, int direction)
+ size_t size, enum dma_data_direction direction)
{
unsigned long iommu_page;
int npages;
@@ -613,7 +618,8 @@ void dma_unmap_single(struct device *dev
/*
* Wrapper for pci_unmap_single working with scatterlists.
*/
-void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents, int dir)
+void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
+ enum dma_data_direction dir)
{
int i;
if (swiotlb) {
diff -Naurp --exclude-from /home/muli/w/dontdiff vanilla/include/asm-x86_64/dma-mapping.h dma_data_direction.hg/include/asm-x86_64/dma-mapping.h
--- vanilla/include/asm-x86_64/dma-mapping.h 2005-11-03 01:38:45.000000000 -0500
+++ dma_data_direction.hg/include/asm-x86_64/dma-mapping.h 2005-11-18 16:29:39.000000000 -0500
@@ -24,16 +24,16 @@ void dma_free_coherent(struct device *de
#ifdef CONFIG_GART_IOMMU

extern dma_addr_t dma_map_single(struct device *hwdev, void *ptr, size_t size,
- int direction);
+ enum dma_data_direction direction);
extern void dma_unmap_single(struct device *dev, dma_addr_t addr,size_t size,
- int direction);
+ enum dma_data_direction direction);

#else

/* No IOMMU */

static inline dma_addr_t dma_map_single(struct device *hwdev, void *ptr,
- size_t size, int direction)
+ size_t size, enum dma_data_direction direction)
{
dma_addr_t addr;

@@ -47,7 +47,7 @@ static inline dma_addr_t dma_map_single(
}

static inline void dma_unmap_single(struct device *hwdev, dma_addr_t dma_addr,
- size_t size, int direction)
+ size_t size, enum dma_data_direction direction)
{
if (direction == DMA_NONE)
out_of_line_bug();
@@ -61,7 +61,8 @@ static inline void dma_unmap_single(stru

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 direction)
{
if (direction == DMA_NONE)
out_of_line_bug();
@@ -74,7 +75,8 @@ static inline void dma_sync_single_for_c

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 direction)
{
if (direction == DMA_NONE)
out_of_line_bug();
@@ -88,7 +90,8 @@ static inline void dma_sync_single_for_d
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)
+ size_t size,
+ enum dma_data_direction direction)
{
if (direction == DMA_NONE)
out_of_line_bug();
@@ -102,7 +105,8 @@ static inline void dma_sync_single_range
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)
+ size_t size,
+ enum dma_data_direction direction)
{
if (direction == DMA_NONE)
out_of_line_bug();
@@ -115,7 +119,8 @@ static inline void dma_sync_single_range

static inline void dma_sync_sg_for_cpu(struct device *hwdev,
struct scatterlist *sg,
- int nelems, int direction)
+ int nelems,
+ enum dma_data_direction direction)
{
if (direction == DMA_NONE)
out_of_line_bug();
@@ -128,7 +133,8 @@ static inline void dma_sync_sg_for_cpu(s

static inline void dma_sync_sg_for_device(struct device *hwdev,
struct scatterlist *sg,
- int nelems, int direction)
+ int nelems,
+ enum dma_data_direction direction)
{
if (direction == DMA_NONE)
out_of_line_bug();
@@ -140,9 +146,9 @@ static inline void dma_sync_sg_for_devic
}

extern int dma_map_sg(struct device *hwdev, struct scatterlist *sg,
- int nents, int direction);
+ int nents, enum dma_data_direction direction);
extern void dma_unmap_sg(struct device *hwdev, struct scatterlist *sg,
- int nents, int direction);
+ int nents, enum dma_data_direction direction);

#define dma_unmap_page dma_unmap_single

@@ -158,7 +164,8 @@ static inline int dma_set_mask(struct de
return 0;
}

-static inline void dma_cache_sync(void *vaddr, size_t size, enum dma_data_direction dir)
+static inline void dma_cache_sync(void *vaddr, size_t size,
+ enum dma_data_direction dir)
{
flush_write_buffers();
}
diff -Naurp --exclude-from /home/muli/w/dontdiff vanilla/include/asm-x86_64/swiotlb.h dma_data_direction.hg/include/asm-x86_64/swiotlb.h
--- vanilla/include/asm-x86_64/swiotlb.h 2005-11-03 01:38:45.000000000 -0500
+++ dma_data_direction.hg/include/asm-x86_64/swiotlb.h 2005-11-18 16:13:27.000000000 -0500
@@ -1,43 +1,7 @@
#ifndef _ASM_SWIOTLB_H
#define _ASM_SWTIOLB_H 1

-#include <linux/config.h>
-
-/* SWIOTLB interface */
-
-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 void swiotlb_sync_single_for_cpu(struct device *hwdev,
- dma_addr_t dev_addr,
- size_t size, int dir);
-extern void swiotlb_sync_single_for_device(struct device *hwdev,
- dma_addr_t dev_addr,
- size_t size, int 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);
-extern void swiotlb_sync_single_range_for_device(struct device *hwdev,
- dma_addr_t dev_addr,
- unsigned long offset,
- size_t size, int dir);
-extern void swiotlb_sync_sg_for_cpu(struct device *hwdev,
- struct scatterlist *sg, int nelems,
- int dir);
-extern void swiotlb_sync_sg_for_device(struct device *hwdev,
- struct scatterlist *sg, int nelems,
- int dir);
-extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg,
- int nents, int direction);
-extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
- int nents, int direction);
-extern int swiotlb_dma_mapping_error(dma_addr_t dma_addr);
-extern void *swiotlb_alloc_coherent (struct device *hwdev, size_t size,
- dma_addr_t *dma_handle, gfp_t flags);
-extern void swiotlb_free_coherent (struct device *hwdev, size_t size,
- void *vaddr, dma_addr_t dma_handle);
+#include <asm-generic/swiotlb.h>

#ifdef CONFIG_SWIOTLB
extern int swiotlb;
@@ -45,4 +9,4 @@ extern int swiotlb;
#define swiotlb 0
#endif

-#endif
+#endif /* _ASM_SWTIOLB_H */

--
Muli Ben-Yehuda
http://www.mulix.org | http://mulix.livejournal.com/
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