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Subject[RFC PATCH 1/3] move swiotlb header file into common code - generic bits
muli@granada:~/tmp$ diffstat move-swiotlb-into-generic-code-generic-bits-A1
include/asm-generic/swiotlb.h | 60 +++++++++++++++++++++++++++++++++++++
include/linux/dma-data-direction.h | 13 ++++++++
include/linux/dma-mapping.h | 10 ------
lib/swiotlb.c | 36 +++++++++++-----------
4 files changed, 93 insertions(+), 26 deletions(-)
---
diff -Naurp --exclude-from /home/muli/w/dontdiff vanilla/include/asm-generic/swiotlb.h dma_data_direction.hg/include/asm-generic/swiotlb.h
--- vanilla/include/asm-generic/swiotlb.h 1969-12-31 19:00:00.000000000 -0500
+++ dma_data_direction.hg/include/asm-generic/swiotlb.h 2005-11-21 13:32:14.000000000 -0500
@@ -0,0 +1,60 @@
+#ifndef _ASM_GENERIC_SWIOTLB_H
+#define _ASM_GENERIC_SWTIOLB_H 1
+
+#include <linux/dma-data-direction.h>
+
+struct device;
+struct scatterlist;
+
+extern dma_addr_t
+swiotlb_map_single(struct device *hwdev, void *ptr, size_t size,
+ enum dma_data_direction dir);
+
+extern void
+swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
+ enum dma_data_direction dir);
+
+extern void
+swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr, size_t size,
+ enum dma_data_direction dir);
+
+extern void
+swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
+ size_t size, 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, 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, enum dma_data_direction dir);
+
+extern void
+swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg, int nelems,
+ enum dma_data_direction dir);
+
+extern void
+swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
+ int nelems, enum dma_data_direction dir);
+
+extern int
+swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nents,
+ enum dma_data_direction direction);
+
+extern void
+swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
+ enum dma_data_direction 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);
+
+#endif /* _ASM_GENERIC_SWTIOLB_H */
diff -Naurp --exclude-from /home/muli/w/dontdiff vanilla/include/linux/dma-data-direction.h dma_data_direction.hg/include/linux/dma-data-direction.h
--- vanilla/include/linux/dma-data-direction.h 1969-12-31 19:00:00.000000000 -0500
+++ dma_data_direction.hg/include/linux/dma-data-direction.h 2005-11-21 13:31:18.000000000 -0500
@@ -0,0 +1,13 @@
+#ifndef _ASM_LINUX_DMA_DATA_DIRECTION_H
+#define _ASM_LINUX_DMA_DATA_DIRECTION_H
+
+/* These definitions mirror those in pci.h, so they can be used
+ * interchangeably with their PCI_ counterparts */
+enum dma_data_direction {
+ DMA_BIDIRECTIONAL = 0,
+ DMA_TO_DEVICE = 1,
+ DMA_FROM_DEVICE = 2,
+ DMA_NONE = 3,
+};
+
+#endif /* _ASM_LINUX_DMA_DATA_DIRECTION_H */
diff -Naurp --exclude-from /home/muli/w/dontdiff vanilla/include/linux/dma-mapping.h dma_data_direction.hg/include/linux/dma-mapping.h
--- vanilla/include/linux/dma-mapping.h 2005-09-08 07:07:32.000000000 -0400
+++ dma_data_direction.hg/include/linux/dma-mapping.h 2005-11-21 13:31:40.000000000 -0500
@@ -3,15 +3,7 @@

#include <linux/device.h>
#include <linux/err.h>
-
-/* These definitions mirror those in pci.h, so they can be used
- * interchangeably with their PCI_ counterparts */
-enum dma_data_direction {
- DMA_BIDIRECTIONAL = 0,
- DMA_TO_DEVICE = 1,
- DMA_FROM_DEVICE = 2,
- DMA_NONE = 3,
-};
+#include <linux/dma-data-direction.h>

#define DMA_64BIT_MASK 0xffffffffffffffffULL
#define DMA_40BIT_MASK 0x000000ffffffffffULL
diff -Naurp --exclude-from /home/muli/w/dontdiff vanilla/lib/swiotlb.c dma_data_direction.hg/lib/swiotlb.c
--- vanilla/lib/swiotlb.c 2005-11-12 15:52:15.000000000 -0500
+++ dma_data_direction.hg/lib/swiotlb.c 2005-11-18 16:24:29.000000000 -0500
@@ -280,7 +280,7 @@ address_needs_mapping(struct device *hwd
* Allocates bounce buffer and returns its kernel virtual address.
*/
static void *
-map_single(struct device *hwdev, char *buffer, size_t size, int dir)
+map_single(struct device *hwdev, char *buffer, size_t size, enum dma_data_direction dir)
{
unsigned long flags;
char *dma_addr;
@@ -363,7 +363,7 @@ map_single(struct device *hwdev, char *b
* dma_addr is the kernel virtual address of the bounce buffer to unmap.
*/
static void
-unmap_single(struct device *hwdev, char *dma_addr, size_t size, int dir)
+unmap_single(struct device *hwdev, char *dma_addr, size_t size, enum dma_data_direction dir)
{
unsigned long flags;
int i, count, nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT;
@@ -408,7 +408,7 @@ unmap_single(struct device *hwdev, char

static void
sync_single(struct device *hwdev, char *dma_addr, size_t size,
- int dir, int target)
+ enum dma_data_direction dir, int target)
{
int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT;
char *buffer = io_tlb_orig_addr[index];
@@ -497,7 +497,7 @@ swiotlb_free_coherent(struct device *hwd
}

static void
-swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)
+swiotlb_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.
@@ -525,7 +525,7 @@ swiotlb_full(struct device *dev, size_t
* either swiotlb_unmap_single or swiotlb_dma_sync_single is performed.
*/
dma_addr_t
-swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir)
+swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, enum dma_data_direction dir)
{
unsigned long dev_addr = virt_to_phys(ptr);
void *map;
@@ -589,7 +589,7 @@ mark_clean(void *addr, size_t size)
*/
void
swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
- int dir)
+ enum dma_data_direction dir)
{
char *dma_addr = phys_to_virt(dev_addr);

@@ -613,7 +613,7 @@ swiotlb_unmap_single(struct device *hwde
*/
static inline void
swiotlb_sync_single(struct device *hwdev, dma_addr_t dev_addr,
- size_t size, int dir, int target)
+ size_t size, enum dma_data_direction dir, int target)
{
char *dma_addr = phys_to_virt(dev_addr);

@@ -627,14 +627,14 @@ swiotlb_sync_single(struct device *hwdev

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);
}

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);
}
@@ -645,7 +645,7 @@ swiotlb_sync_single_for_device(struct de
static inline void
swiotlb_sync_single_range(struct device *hwdev, dma_addr_t dev_addr,
unsigned long offset, size_t size,
- int dir, int target)
+ enum dma_data_direction dir, int target)
{
char *dma_addr = phys_to_virt(dev_addr) + offset;

@@ -659,7 +659,8 @@ swiotlb_sync_single_range(struct device

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);
@@ -667,7 +668,8 @@ swiotlb_sync_single_range_for_cpu(struct

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);
@@ -691,7 +693,7 @@ swiotlb_sync_single_range_for_device(str
*/
int
swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nelems,
- int dir)
+ enum dma_data_direction dir)
{
void *addr;
unsigned long dev_addr;
@@ -726,7 +728,7 @@ swiotlb_map_sg(struct device *hwdev, str
*/
void
swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nelems,
- int dir)
+ enum dma_data_direction dir)
{
int i;

@@ -749,7 +751,7 @@ swiotlb_unmap_sg(struct device *hwdev, s
*/
static inline void
swiotlb_sync_sg(struct device *hwdev, struct scatterlist *sg,
- int nelems, int dir, int target)
+ int nelems, enum dma_data_direction dir, int target)
{
int i;

@@ -764,14 +766,14 @@ swiotlb_sync_sg(struct device *hwdev, st

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);
}

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);
}

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