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3a714237
编写于
11月 02, 2005
作者:
L
Linus Torvalds
浏览文件
操作
浏览文件
下载
差异文件
Merge branch 'swiotlb' of
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
上级
ec1890c5
c7fb577e
变更
7
隐藏空白更改
内联
并排
Showing
7 changed file
with
139 addition
and
52 deletion
+139
-52
arch/ia64/Kconfig
arch/ia64/Kconfig
+4
-0
arch/ia64/lib/Makefile
arch/ia64/lib/Makefile
+1
-1
arch/x86_64/kernel/Makefile
arch/x86_64/kernel/Makefile
+0
-2
include/asm-x86_64/dma-mapping.h
include/asm-x86_64/dma-mapping.h
+27
-4
include/asm-x86_64/swiotlb.h
include/asm-x86_64/swiotlb.h
+8
-0
lib/Makefile
lib/Makefile
+2
-0
lib/swiotlb.c
lib/swiotlb.c
+97
-45
未找到文件。
arch/ia64/Kconfig
浏览文件 @
3a714237
...
@@ -26,6 +26,10 @@ config MMU
...
@@ -26,6 +26,10 @@ config MMU
bool
bool
default y
default y
config SWIOTLB
bool
default y
config RWSEM_XCHGADD_ALGORITHM
config RWSEM_XCHGADD_ALGORITHM
bool
bool
default y
default y
...
...
arch/ia64/lib/Makefile
浏览文件 @
3a714237
...
@@ -9,7 +9,7 @@ lib-y := __divsi3.o __udivsi3.o __modsi3.o __umodsi3.o \
...
@@ -9,7 +9,7 @@ lib-y := __divsi3.o __udivsi3.o __modsi3.o __umodsi3.o \
bitop.o checksum.o clear_page.o csum_partial_copy.o
\
bitop.o checksum.o clear_page.o csum_partial_copy.o
\
clear_user.o strncpy_from_user.o strlen_user.o strnlen_user.o
\
clear_user.o strncpy_from_user.o strlen_user.o strnlen_user.o
\
flush.o ip_fast_csum.o do_csum.o
\
flush.o ip_fast_csum.o do_csum.o
\
memset.o strlen.o
swiotlb.o
memset.o strlen.o
lib-$(CONFIG_ITANIUM)
+=
copy_page.o copy_user.o memcpy.o
lib-$(CONFIG_ITANIUM)
+=
copy_page.o copy_user.o memcpy.o
lib-$(CONFIG_MCKINLEY)
+=
copy_page_mck.o memcpy_mck.o
lib-$(CONFIG_MCKINLEY)
+=
copy_page_mck.o memcpy_mck.o
...
...
arch/x86_64/kernel/Makefile
浏览文件 @
3a714237
...
@@ -27,7 +27,6 @@ obj-$(CONFIG_CPU_FREQ) += cpufreq/
...
@@ -27,7 +27,6 @@ obj-$(CONFIG_CPU_FREQ) += cpufreq/
obj-$(CONFIG_EARLY_PRINTK)
+=
early_printk.o
obj-$(CONFIG_EARLY_PRINTK)
+=
early_printk.o
obj-$(CONFIG_GART_IOMMU)
+=
pci-gart.o aperture.o
obj-$(CONFIG_GART_IOMMU)
+=
pci-gart.o aperture.o
obj-$(CONFIG_DUMMY_IOMMU)
+=
pci-nommu.o pci-dma.o
obj-$(CONFIG_DUMMY_IOMMU)
+=
pci-nommu.o pci-dma.o
obj-$(CONFIG_SWIOTLB)
+=
swiotlb.o
obj-$(CONFIG_KPROBES)
+=
kprobes.o
obj-$(CONFIG_KPROBES)
+=
kprobes.o
obj-$(CONFIG_X86_PM_TIMER)
+=
pmtimer.o
obj-$(CONFIG_X86_PM_TIMER)
+=
pmtimer.o
...
@@ -41,7 +40,6 @@ CFLAGS_vsyscall.o := $(PROFILING) -g0
...
@@ -41,7 +40,6 @@ CFLAGS_vsyscall.o := $(PROFILING) -g0
bootflag-y
+=
../../i386/kernel/bootflag.o
bootflag-y
+=
../../i386/kernel/bootflag.o
cpuid-$(subst
m,y,
$(CONFIG_X86_CPUID))
+=
../../i386/kernel/cpuid.o
cpuid-$(subst
m,y,
$(CONFIG_X86_CPUID))
+=
../../i386/kernel/cpuid.o
topology-y
+=
../../i386/mach-default/topology.o
topology-y
+=
../../i386/mach-default/topology.o
swiotlb-$(CONFIG_SWIOTLB)
+=
../../ia64/lib/swiotlb.o
microcode-$(subst
m,y,
$(CONFIG_MICROCODE))
+=
../../i386/kernel/microcode.o
microcode-$(subst
m,y,
$(CONFIG_MICROCODE))
+=
../../i386/kernel/microcode.o
intel_cacheinfo-y
+=
../../i386/kernel/cpu/intel_cacheinfo.o
intel_cacheinfo-y
+=
../../i386/kernel/cpu/intel_cacheinfo.o
quirks-y
+=
../../i386/kernel/quirks.o
quirks-y
+=
../../i386/kernel/quirks.o
...
...
include/asm-x86_64/dma-mapping.h
浏览文件 @
3a714237
...
@@ -85,10 +85,33 @@ static inline void dma_sync_single_for_device(struct device *hwdev,
...
@@ -85,10 +85,33 @@ static inline void dma_sync_single_for_device(struct device *hwdev,
flush_write_buffers
();
flush_write_buffers
();
}
}
#define dma_sync_single_range_for_cpu(dev, dma_handle, offset, size, dir) \
static
inline
void
dma_sync_single_range_for_cpu
(
struct
device
*
hwdev
,
dma_sync_single_for_cpu(dev, dma_handle, size, dir)
dma_addr_t
dma_handle
,
#define dma_sync_single_range_for_device(dev, dma_handle, offset, size, dir) \
unsigned
long
offset
,
dma_sync_single_for_device(dev, dma_handle, size, dir)
size_t
size
,
int
direction
)
{
if
(
direction
==
DMA_NONE
)
out_of_line_bug
();
if
(
swiotlb
)
return
swiotlb_sync_single_range_for_cpu
(
hwdev
,
dma_handle
,
offset
,
size
,
direction
);
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
)
{
if
(
direction
==
DMA_NONE
)
out_of_line_bug
();
if
(
swiotlb
)
return
swiotlb_sync_single_range_for_device
(
hwdev
,
dma_handle
,
offset
,
size
,
direction
);
flush_write_buffers
();
}
static
inline
void
dma_sync_sg_for_cpu
(
struct
device
*
hwdev
,
static
inline
void
dma_sync_sg_for_cpu
(
struct
device
*
hwdev
,
struct
scatterlist
*
sg
,
struct
scatterlist
*
sg
,
...
...
include/asm-x86_64/swiotlb.h
浏览文件 @
3a714237
...
@@ -15,6 +15,14 @@ extern void swiotlb_sync_single_for_cpu(struct device *hwdev,
...
@@ -15,6 +15,14 @@ extern void swiotlb_sync_single_for_cpu(struct device *hwdev,
extern
void
swiotlb_sync_single_for_device
(
struct
device
*
hwdev
,
extern
void
swiotlb_sync_single_for_device
(
struct
device
*
hwdev
,
dma_addr_t
dev_addr
,
dma_addr_t
dev_addr
,
size_t
size
,
int
dir
);
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
,
extern
void
swiotlb_sync_sg_for_cpu
(
struct
device
*
hwdev
,
struct
scatterlist
*
sg
,
int
nelems
,
struct
scatterlist
*
sg
,
int
nelems
,
int
dir
);
int
dir
);
...
...
lib/Makefile
浏览文件 @
3a714237
...
@@ -44,6 +44,8 @@ obj-$(CONFIG_TEXTSEARCH_KMP) += ts_kmp.o
...
@@ -44,6 +44,8 @@ obj-$(CONFIG_TEXTSEARCH_KMP) += ts_kmp.o
obj-$(CONFIG_TEXTSEARCH_BM)
+=
ts_bm.o
obj-$(CONFIG_TEXTSEARCH_BM)
+=
ts_bm.o
obj-$(CONFIG_TEXTSEARCH_FSM)
+=
ts_fsm.o
obj-$(CONFIG_TEXTSEARCH_FSM)
+=
ts_fsm.o
obj-$(CONFIG_SWIOTLB)
+=
swiotlb.o
hostprogs-y
:=
gen_crc32table
hostprogs-y
:=
gen_crc32table
clean-files
:=
crc32table.h
clean-files
:=
crc32table.h
...
...
arch/ia64/
lib/swiotlb.c
→
lib/swiotlb.c
浏览文件 @
3a714237
/*
/*
* Dynamic DMA mapping support.
* Dynamic DMA mapping support.
*
*
* This implementation is for IA-64 platforms that do not support
* This implementation is for IA-64
and EM64T
platforms that do not support
* I/O TLBs (aka DMA address translation hardware).
* I/O TLBs (aka DMA address translation hardware).
* Copyright (C) 2000 Asit Mallick <Asit.K.Mallick@intel.com>
* Copyright (C) 2000 Asit Mallick <Asit.K.Mallick@intel.com>
* Copyright (C) 2000 Goutham Rao <goutham.rao@intel.com>
* Copyright (C) 2000 Goutham Rao <goutham.rao@intel.com>
...
@@ -11,21 +11,23 @@
...
@@ -11,21 +11,23 @@
* 03/05/07 davidm Switch from PCI-DMA to generic device DMA API.
* 03/05/07 davidm Switch from PCI-DMA to generic device DMA API.
* 00/12/13 davidm Rename to swiotlb.c and add mark_clean() to avoid
* 00/12/13 davidm Rename to swiotlb.c and add mark_clean() to avoid
* unnecessary i-cache flushing.
* unnecessary i-cache flushing.
* 04/07/.. ak Better overflow handling. Assorted fixes.
* 04/07/.. ak Better overflow handling. Assorted fixes.
* 05/09/10 linville Add support for syncing ranges, support syncing for
* DMA_BIDIRECTIONAL mappings, miscellaneous cleanup.
*/
*/
#include <linux/cache.h>
#include <linux/cache.h>
#include <linux/dma-mapping.h>
#include <linux/mm.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/types.h>
#include <linux/ctype.h>
#include <linux/ctype.h>
#include <asm/io.h>
#include <asm/io.h>
#include <asm/pci.h>
#include <asm/dma.h>
#include <asm/dma.h>
#include <asm/scatterlist.h>
#include <linux/init.h>
#include <linux/init.h>
#include <linux/bootmem.h>
#include <linux/bootmem.h>
...
@@ -58,6 +60,14 @@
...
@@ -58,6 +60,14 @@
*/
*/
#define IO_TLB_MIN_SLABS ((1<<20) >> IO_TLB_SHIFT)
#define IO_TLB_MIN_SLABS ((1<<20) >> IO_TLB_SHIFT)
/*
* Enumeration for sync targets
*/
enum
dma_sync_target
{
SYNC_FOR_CPU
=
0
,
SYNC_FOR_DEVICE
=
1
,
};
int
swiotlb_force
;
int
swiotlb_force
;
/*
/*
...
@@ -117,7 +127,7 @@ __setup("swiotlb=", setup_io_tlb_npages);
...
@@ -117,7 +127,7 @@ __setup("swiotlb=", setup_io_tlb_npages);
/*
/*
* Statically reserve bounce buffer space and initialize bounce buffer data
* Statically reserve bounce buffer space and initialize bounce buffer data
* structures for the software IO TLB used to implement the
PCI
DMA API.
* structures for the software IO TLB used to implement the DMA API.
*/
*/
void
void
swiotlb_init_with_default_size
(
size_t
default_size
)
swiotlb_init_with_default_size
(
size_t
default_size
)
...
@@ -397,21 +407,28 @@ unmap_single(struct device *hwdev, char *dma_addr, size_t size, int dir)
...
@@ -397,21 +407,28 @@ unmap_single(struct device *hwdev, char *dma_addr, size_t size, int dir)
}
}
static
void
static
void
sync_single
(
struct
device
*
hwdev
,
char
*
dma_addr
,
size_t
size
,
int
dir
)
sync_single
(
struct
device
*
hwdev
,
char
*
dma_addr
,
size_t
size
,
int
dir
,
int
target
)
{
{
int
index
=
(
dma_addr
-
io_tlb_start
)
>>
IO_TLB_SHIFT
;
int
index
=
(
dma_addr
-
io_tlb_start
)
>>
IO_TLB_SHIFT
;
char
*
buffer
=
io_tlb_orig_addr
[
index
];
char
*
buffer
=
io_tlb_orig_addr
[
index
];
/*
switch
(
target
)
{
* bounce... copy the data back into/from the original buffer
case
SYNC_FOR_CPU
:
* XXX How do you handle DMA_BIDIRECTIONAL here ?
if
(
likely
(
dir
==
DMA_FROM_DEVICE
||
dir
==
DMA_BIDIRECTIONAL
))
*/
memcpy
(
buffer
,
dma_addr
,
size
);
if
(
dir
==
DMA_FROM_DEVICE
)
else
if
(
dir
!=
DMA_TO_DEVICE
)
memcpy
(
buffer
,
dma_addr
,
size
);
BUG
();
else
if
(
dir
==
DMA_TO_DEVICE
)
break
;
memcpy
(
dma_addr
,
buffer
,
size
);
case
SYNC_FOR_DEVICE
:
else
if
(
likely
(
dir
==
DMA_TO_DEVICE
||
dir
==
DMA_BIDIRECTIONAL
))
memcpy
(
dma_addr
,
buffer
,
size
);
else
if
(
dir
!=
DMA_FROM_DEVICE
)
BUG
();
break
;
default:
BUG
();
BUG
();
}
}
}
void
*
void
*
...
@@ -485,24 +502,24 @@ swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)
...
@@ -485,24 +502,24 @@ swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)
/*
/*
* Ran out of IOMMU space for this operation. This is very bad.
* Ran out of IOMMU space for this operation. This is very bad.
* Unfortunately the drivers cannot handle this operation properly.
* Unfortunately the drivers cannot handle this operation properly.
* unless they check for
pci_
dma_mapping_error (most don't)
* unless they check for dma_mapping_error (most don't)
* When the mapping is small enough return a static buffer to limit
* When the mapping is small enough return a static buffer to limit
* the damage, or panic when the transfer is too big.
* the damage, or panic when the transfer is too big.
*/
*/
printk
(
KERN_ERR
"
PCI-
DMA: Out of SW-IOMMU space for %lu bytes at "
printk
(
KERN_ERR
"DMA: Out of SW-IOMMU space for %lu bytes at "
"device %s
\n
"
,
size
,
dev
?
dev
->
bus_id
:
"?"
);
"device %s
\n
"
,
size
,
dev
?
dev
->
bus_id
:
"?"
);
if
(
size
>
io_tlb_overflow
&&
do_panic
)
{
if
(
size
>
io_tlb_overflow
&&
do_panic
)
{
if
(
dir
==
PCI_DMA_FROMDEVICE
||
dir
==
PCI_
DMA_BIDIRECTIONAL
)
if
(
dir
==
DMA_FROM_DEVICE
||
dir
==
DMA_BIDIRECTIONAL
)
panic
(
"
PCI-
DMA: Memory would be corrupted
\n
"
);
panic
(
"DMA: Memory would be corrupted
\n
"
);
if
(
dir
==
PCI_DMA_TODEVICE
||
dir
==
PCI_
DMA_BIDIRECTIONAL
)
if
(
dir
==
DMA_TO_DEVICE
||
dir
==
DMA_BIDIRECTIONAL
)
panic
(
"
PCI-
DMA: Random memory would be DMAed
\n
"
);
panic
(
"DMA: Random memory would be DMAed
\n
"
);
}
}
}
}
/*
/*
* Map a single buffer of the indicated size for DMA in streaming mode. The
* Map a single buffer of the indicated size for DMA in streaming mode. The
*
PCI
address to use is returned.
*
physical
address to use is returned.
*
*
* Once the device is given the dma address, the device owns this memory until
* 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.
* either swiotlb_unmap_single or swiotlb_dma_sync_single is performed.
...
@@ -589,39 +606,73 @@ swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
...
@@ -589,39 +606,73 @@ swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
* after a transfer.
* after a transfer.
*
*
* If you perform a swiotlb_map_single() but wish to interrogate the buffer
* If you perform a swiotlb_map_single() but wish to interrogate the buffer
* using the cpu, yet do not wish to teardown the
PCI
dma mapping, you must
* using the cpu, yet do not wish to teardown the dma mapping, you must
* call this function before doing so. At the next point you give the
PCI
dma
* call this function before doing so. At the next point you give the dma
* address back to the card, you must first perform a
* address back to the card, you must first perform a
* swiotlb_dma_sync_for_device, and then the device again owns the buffer
* swiotlb_dma_sync_for_device, and then the device again owns the buffer
*/
*/
void
static
inline
void
swiotlb_sync_single
_for_cpu
(
struct
device
*
hwdev
,
dma_addr_t
dev_addr
,
swiotlb_sync_single
(
struct
device
*
hwdev
,
dma_addr_t
dev_addr
,
size_t
size
,
int
dir
)
size_t
size
,
int
dir
,
int
target
)
{
{
char
*
dma_addr
=
phys_to_virt
(
dev_addr
);
char
*
dma_addr
=
phys_to_virt
(
dev_addr
);
if
(
dir
==
DMA_NONE
)
if
(
dir
==
DMA_NONE
)
BUG
();
BUG
();
if
(
dma_addr
>=
io_tlb_start
&&
dma_addr
<
io_tlb_end
)
if
(
dma_addr
>=
io_tlb_start
&&
dma_addr
<
io_tlb_end
)
sync_single
(
hwdev
,
dma_addr
,
size
,
dir
);
sync_single
(
hwdev
,
dma_addr
,
size
,
dir
,
target
);
else
if
(
dir
==
DMA_FROM_DEVICE
)
else
if
(
dir
==
DMA_FROM_DEVICE
)
mark_clean
(
dma_addr
,
size
);
mark_clean
(
dma_addr
,
size
);
}
}
void
swiotlb_sync_single_for_cpu
(
struct
device
*
hwdev
,
dma_addr_t
dev_addr
,
size_t
size
,
int
dir
)
{
swiotlb_sync_single
(
hwdev
,
dev_addr
,
size
,
dir
,
SYNC_FOR_CPU
);
}
void
void
swiotlb_sync_single_for_device
(
struct
device
*
hwdev
,
dma_addr_t
dev_addr
,
swiotlb_sync_single_for_device
(
struct
device
*
hwdev
,
dma_addr_t
dev_addr
,
size_t
size
,
int
dir
)
size_t
size
,
int
dir
)
{
{
char
*
dma_addr
=
phys_to_virt
(
dev_addr
);
swiotlb_sync_single
(
hwdev
,
dev_addr
,
size
,
dir
,
SYNC_FOR_DEVICE
);
}
/*
* Same as above, but for a sub-range of the mapping.
*/
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
)
{
char
*
dma_addr
=
phys_to_virt
(
dev_addr
)
+
offset
;
if
(
dir
==
DMA_NONE
)
if
(
dir
==
DMA_NONE
)
BUG
();
BUG
();
if
(
dma_addr
>=
io_tlb_start
&&
dma_addr
<
io_tlb_end
)
if
(
dma_addr
>=
io_tlb_start
&&
dma_addr
<
io_tlb_end
)
sync_single
(
hwdev
,
dma_addr
,
size
,
dir
);
sync_single
(
hwdev
,
dma_addr
,
size
,
dir
,
target
);
else
if
(
dir
==
DMA_FROM_DEVICE
)
else
if
(
dir
==
DMA_FROM_DEVICE
)
mark_clean
(
dma_addr
,
size
);
mark_clean
(
dma_addr
,
size
);
}
}
void
swiotlb_sync_single_range_for_cpu
(
struct
device
*
hwdev
,
dma_addr_t
dev_addr
,
unsigned
long
offset
,
size_t
size
,
int
dir
)
{
swiotlb_sync_single_range
(
hwdev
,
dev_addr
,
offset
,
size
,
dir
,
SYNC_FOR_CPU
);
}
void
swiotlb_sync_single_range_for_device
(
struct
device
*
hwdev
,
dma_addr_t
dev_addr
,
unsigned
long
offset
,
size_t
size
,
int
dir
)
{
swiotlb_sync_single_range
(
hwdev
,
dev_addr
,
offset
,
size
,
dir
,
SYNC_FOR_DEVICE
);
}
/*
/*
* Map a set of buffers described by scatterlist in streaming mode for DMA.
* Map a set of buffers described by scatterlist in streaming mode for DMA.
* This is the scatter-gather version of the above swiotlb_map_single
* This is the scatter-gather version of the above swiotlb_map_single
...
@@ -696,9 +747,9 @@ swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nelems,
...
@@ -696,9 +747,9 @@ swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nelems,
* The same as swiotlb_sync_single_* but for a scatter-gather list, same rules
* The same as swiotlb_sync_single_* but for a scatter-gather list, same rules
* and usage.
* and usage.
*/
*/
void
static
inline
void
swiotlb_sync_sg
_for_cpu
(
struct
device
*
hwdev
,
struct
scatterlist
*
sg
,
swiotlb_sync_sg
(
struct
device
*
hwdev
,
struct
scatterlist
*
sg
,
int
nelems
,
int
dir
)
int
nelems
,
int
dir
,
int
target
)
{
{
int
i
;
int
i
;
...
@@ -708,22 +759,21 @@ swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
...
@@ -708,22 +759,21 @@ swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
for
(
i
=
0
;
i
<
nelems
;
i
++
,
sg
++
)
for
(
i
=
0
;
i
<
nelems
;
i
++
,
sg
++
)
if
(
sg
->
dma_address
!=
SG_ENT_PHYS_ADDRESS
(
sg
))
if
(
sg
->
dma_address
!=
SG_ENT_PHYS_ADDRESS
(
sg
))
sync_single
(
hwdev
,
(
void
*
)
sg
->
dma_address
,
sync_single
(
hwdev
,
(
void
*
)
sg
->
dma_address
,
sg
->
dma_length
,
dir
);
sg
->
dma_length
,
dir
,
target
);
}
void
swiotlb_sync_sg_for_cpu
(
struct
device
*
hwdev
,
struct
scatterlist
*
sg
,
int
nelems
,
int
dir
)
{
swiotlb_sync_sg
(
hwdev
,
sg
,
nelems
,
dir
,
SYNC_FOR_CPU
);
}
}
void
void
swiotlb_sync_sg_for_device
(
struct
device
*
hwdev
,
struct
scatterlist
*
sg
,
swiotlb_sync_sg_for_device
(
struct
device
*
hwdev
,
struct
scatterlist
*
sg
,
int
nelems
,
int
dir
)
int
nelems
,
int
dir
)
{
{
int
i
;
swiotlb_sync_sg
(
hwdev
,
sg
,
nelems
,
dir
,
SYNC_FOR_DEVICE
);
if
(
dir
==
DMA_NONE
)
BUG
();
for
(
i
=
0
;
i
<
nelems
;
i
++
,
sg
++
)
if
(
sg
->
dma_address
!=
SG_ENT_PHYS_ADDRESS
(
sg
))
sync_single
(
hwdev
,
(
void
*
)
sg
->
dma_address
,
sg
->
dma_length
,
dir
);
}
}
int
int
...
@@ -733,9 +783,9 @@ swiotlb_dma_mapping_error(dma_addr_t dma_addr)
...
@@ -733,9 +783,9 @@ swiotlb_dma_mapping_error(dma_addr_t dma_addr)
}
}
/*
/*
* Return whether the given
PCI
device DMA address mask can be supported
* Return whether the given device DMA address mask can be supported
* properly. For example, if your device can only drive the low 24-bits
* properly. For example, if your device can only drive the low 24-bits
* during
PCI
bus mastering, then you would pass 0x00ffffff as the mask to
* during bus mastering, then you would pass 0x00ffffff as the mask to
* this function.
* this function.
*/
*/
int
int
...
@@ -751,6 +801,8 @@ EXPORT_SYMBOL(swiotlb_map_sg);
...
@@ -751,6 +801,8 @@ EXPORT_SYMBOL(swiotlb_map_sg);
EXPORT_SYMBOL
(
swiotlb_unmap_sg
);
EXPORT_SYMBOL
(
swiotlb_unmap_sg
);
EXPORT_SYMBOL
(
swiotlb_sync_single_for_cpu
);
EXPORT_SYMBOL
(
swiotlb_sync_single_for_cpu
);
EXPORT_SYMBOL
(
swiotlb_sync_single_for_device
);
EXPORT_SYMBOL
(
swiotlb_sync_single_for_device
);
EXPORT_SYMBOL_GPL
(
swiotlb_sync_single_range_for_cpu
);
EXPORT_SYMBOL_GPL
(
swiotlb_sync_single_range_for_device
);
EXPORT_SYMBOL
(
swiotlb_sync_sg_for_cpu
);
EXPORT_SYMBOL
(
swiotlb_sync_sg_for_cpu
);
EXPORT_SYMBOL
(
swiotlb_sync_sg_for_device
);
EXPORT_SYMBOL
(
swiotlb_sync_sg_for_device
);
EXPORT_SYMBOL
(
swiotlb_dma_mapping_error
);
EXPORT_SYMBOL
(
swiotlb_dma_mapping_error
);
...
...
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