tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
dma-mapping: split <linux/dma-mapping.h>
Split out all the bits that are purely for dma_map_ops implementations
and related code into a new <linux/dma-map-ops.h> header so that they
don't get pulled into all the drivers. That also means the architecture
specific <asm/dma-mapping.h> is not pulled in by <linux/dma-mapping.h>
any more, which leads to a missing includes that were pulled in by the
x86 or arm versions in a few not overly portable drivers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
+223
-200
+1
MAINTAINERS
+1
MAINTAINERS
+1
-1
arch/alpha/kernel/pci_iommu.c
+1
-1
arch/alpha/kernel/pci_iommu.c
+1
arch/arc/mm/dma.c
+1
arch/arc/mm/dma.c
+1
arch/arm/common/dmabounce.c
+1
arch/arm/common/dmabounce.c
+1
-1
arch/arm/mach-highbank/highbank.c
+1
-1
arch/arm/mach-highbank/highbank.c
+1
-1
arch/arm/mach-imx/mach-imx27_visstrim_m10.c
+1
-1
arch/arm/mach-imx/mach-imx27_visstrim_m10.c
+1
-1
arch/arm/mach-imx/mach-mx31moboard.c
+1
-1
arch/arm/mach-imx/mach-mx31moboard.c
+1
-1
arch/arm/mach-mvebu/coherency.c
+1
-1
arch/arm/mach-mvebu/coherency.c
+1
arch/arm/mm/dma-mapping-nommu.c
+1
arch/arm/mm/dma-mapping-nommu.c
+1
-1
arch/arm/mm/dma-mapping.c
+1
-1
arch/arm/mm/dma-mapping.c
+1
arch/arm64/mm/dma-mapping.c
+1
arch/arm64/mm/dma-mapping.c
+1
-1
arch/ia64/hp/common/sba_iommu.c
+1
-1
arch/ia64/hp/common/sba_iommu.c
+1
-1
arch/ia64/kernel/dma-mapping.c
+1
-1
arch/ia64/kernel/dma-mapping.c
+1
arch/mips/jazz/jazzdma.c
+1
arch/mips/jazz/jazzdma.c
+1
arch/mips/mm/dma-noncoherent.c
+1
arch/mips/mm/dma-noncoherent.c
+1
arch/parisc/kernel/drivers.c
+1
arch/parisc/kernel/drivers.c
+1
-1
arch/powerpc/include/asm/iommu.h
+1
-1
arch/powerpc/include/asm/iommu.h
+1
-1
arch/powerpc/include/asm/pci.h
+1
-1
arch/powerpc/include/asm/pci.h
+1
-1
arch/powerpc/platforms/ps3/system-bus.c
+1
-1
arch/powerpc/platforms/ps3/system-bus.c
+1
-1
arch/powerpc/platforms/pseries/ibmebus.c
+1
-1
arch/powerpc/platforms/pseries/ibmebus.c
+1
-1
arch/powerpc/platforms/pseries/vio.c
+1
-1
arch/powerpc/platforms/pseries/vio.c
+1
-1
arch/s390/pci/pci_dma.c
+1
-1
arch/s390/pci/pci_dma.c
+1
arch/sh/boards/mach-ap325rxa/setup.c
+1
arch/sh/boards/mach-ap325rxa/setup.c
+1
arch/sh/boards/mach-ecovec24/setup.c
+1
arch/sh/boards/mach-ecovec24/setup.c
+1
-1
arch/sh/boards/mach-kfr2r09/setup.c
+1
-1
arch/sh/boards/mach-kfr2r09/setup.c
···
14
14
15
15
#include <linux/clkdev.h>
16
16
#include <linux/delay.h>
17
-
#include <linux/dma-mapping.h>
18
17
#include <linux/gpio.h>
19
18
#include <linux/gpio/machine.h>
20
19
#include <linux/i2c.h>
···
32
33
#include <linux/sh_intc.h>
33
34
#include <linux/usb/r8a66597.h>
34
35
#include <linux/videodev2.h>
36
+
#include <linux/dma-map-ops.h>
35
37
36
38
#include <mach/kfr2r09.h>
37
39
+1
-1
arch/sh/boards/mach-migor/setup.c
+1
-1
arch/sh/boards/mach-migor/setup.c
+1
arch/sh/boards/mach-se/7724/setup.c
+1
arch/sh/boards/mach-se/7724/setup.c
+1
-1
arch/sh/drivers/pci/fixups-dreamcast.c
+1
-1
arch/sh/drivers/pci/fixups-dreamcast.c
+1
-1
arch/sparc/kernel/iommu.c
+1
-1
arch/sparc/kernel/iommu.c
+1
arch/sparc/kernel/pci_sun4v.c
+1
arch/sparc/kernel/pci_sun4v.c
+1
-1
arch/sparc/mm/io-unit.c
+1
-1
arch/sparc/mm/io-unit.c
+1
-1
arch/sparc/mm/iommu.c
+1
-1
arch/sparc/mm/iommu.c
+1
arch/x86/kernel/amd_gart_64.c
+1
arch/x86/kernel/amd_gart_64.c
+1
arch/x86/kernel/pci-dma.c
+1
arch/x86/kernel/pci-dma.c
+2
arch/x86/kernel/setup.c
+2
arch/x86/kernel/setup.c
···
7
7
*/
8
8
#include <linux/console.h>
9
9
#include <linux/crash_dump.h>
10
+
#include <linux/dma-contiguous.h>
10
11
#include <linux/dmi.h>
11
12
#include <linux/efi.h>
12
13
#include <linux/init_ohci1394_dma.h>
···
20
19
#include <linux/hugetlb.h>
21
20
#include <linux/tboot.h>
22
21
#include <linux/usb/xhci-dbgp.h>
22
+
#include <linux/swiotlb.h>
23
23
24
24
#include <uapi/linux/mount.h>
25
25
+1
-1
arch/x86/xen/pci-swiotlb-xen.c
+1
-1
arch/x86/xen/pci-swiotlb-xen.c
+1
-1
drivers/acpi/arm64/iort.c
+1
-1
drivers/acpi/arm64/iort.c
+1
-1
drivers/acpi/scan.c
+1
-1
drivers/acpi/scan.c
+1
-1
drivers/base/dd.c
+1
-1
drivers/base/dd.c
+1
-1
drivers/gpu/drm/exynos/exynos_drm_dma.c
+1
-1
drivers/gpu/drm/exynos/exynos_drm_dma.c
+1
drivers/gpu/drm/msm/msm_gem.c
+1
drivers/gpu/drm/msm/msm_gem.c
+1
drivers/iommu/dma-iommu.c
+1
drivers/iommu/dma-iommu.c
+1
-1
drivers/iommu/intel/iommu.c
+1
-1
drivers/iommu/intel/iommu.c
+1
drivers/misc/mic/bus/mic_bus.c
+1
drivers/misc/mic/bus/mic_bus.c
+1
-1
drivers/misc/mic/bus/scif_bus.c
+1
-1
drivers/misc/mic/bus/scif_bus.c
+1
-1
drivers/misc/mic/bus/scif_bus.h
+1
-1
drivers/misc/mic/bus/scif_bus.h
+1
-1
drivers/misc/mic/bus/vop_bus.c
+1
-1
drivers/misc/mic/bus/vop_bus.c
+1
drivers/misc/mic/host/mic_boot.c
+1
drivers/misc/mic/host/mic_boot.c
+1
drivers/of/device.c
+1
drivers/of/device.c
+1
drivers/parisc/ccio-dma.c
+1
drivers/parisc/ccio-dma.c
+1
drivers/parisc/sba_iommu.c
+1
drivers/parisc/sba_iommu.c
+1
drivers/pci/xen-pcifront.c
+1
drivers/pci/xen-pcifront.c
+1
drivers/remoteproc/remoteproc_core.c
+1
drivers/remoteproc/remoteproc_core.c
+1
-1
drivers/remoteproc/remoteproc_virtio.c
+1
-1
drivers/remoteproc/remoteproc_virtio.c
+1
-1
drivers/vdpa/vdpa_sim/vdpa_sim.c
+1
-1
drivers/vdpa/vdpa_sim/vdpa_sim.c
+1
drivers/xen/swiotlb-xen.c
+1
drivers/xen/swiotlb-xen.c
+158
include/linux/dma-map-ops.h
+158
include/linux/dma-map-ops.h
···
1
+
/* SPDX-License-Identifier: GPL-2.0 */
2
+
/*
3
+
* This header is for implementations of dma_map_ops and related code.
4
+
* It should not be included in drivers just using the DMA API.
5
+
*/
6
+
#ifndef _LINUX_DMA_MAP_OPS_H
7
+
#define _LINUX_DMA_MAP_OPS_H
8
+
9
+
#include <linux/dma-mapping.h>
10
+
11
+
struct dma_map_ops {
12
+
void *(*alloc)(struct device *dev, size_t size,
13
+
dma_addr_t *dma_handle, gfp_t gfp,
14
+
unsigned long attrs);
15
+
void (*free)(struct device *dev, size_t size, void *vaddr,
16
+
dma_addr_t dma_handle, unsigned long attrs);
17
+
struct page *(*alloc_pages)(struct device *dev, size_t size,
18
+
dma_addr_t *dma_handle, enum dma_data_direction dir,
19
+
gfp_t gfp);
20
+
void (*free_pages)(struct device *dev, size_t size, struct page *vaddr,
21
+
dma_addr_t dma_handle, enum dma_data_direction dir);
22
+
void *(*alloc_noncoherent)(struct device *dev, size_t size,
23
+
dma_addr_t *dma_handle, enum dma_data_direction dir,
24
+
gfp_t gfp);
25
+
void (*free_noncoherent)(struct device *dev, size_t size, void *vaddr,
26
+
dma_addr_t dma_handle, enum dma_data_direction dir);
27
+
int (*mmap)(struct device *, struct vm_area_struct *,
28
+
void *, dma_addr_t, size_t, unsigned long attrs);
29
+
30
+
int (*get_sgtable)(struct device *dev, struct sg_table *sgt,
31
+
void *cpu_addr, dma_addr_t dma_addr, size_t size,
32
+
unsigned long attrs);
33
+
34
+
dma_addr_t (*map_page)(struct device *dev, struct page *page,
35
+
unsigned long offset, size_t size,
36
+
enum dma_data_direction dir, unsigned long attrs);
37
+
void (*unmap_page)(struct device *dev, dma_addr_t dma_handle,
38
+
size_t size, enum dma_data_direction dir,
39
+
unsigned long attrs);
40
+
/*
41
+
* map_sg returns 0 on error and a value > 0 on success.
42
+
* It should never return a value < 0.
43
+
*/
44
+
int (*map_sg)(struct device *dev, struct scatterlist *sg, int nents,
45
+
enum dma_data_direction dir, unsigned long attrs);
46
+
void (*unmap_sg)(struct device *dev, struct scatterlist *sg, int nents,
47
+
enum dma_data_direction dir, unsigned long attrs);
48
+
dma_addr_t (*map_resource)(struct device *dev, phys_addr_t phys_addr,
49
+
size_t size, enum dma_data_direction dir,
50
+
unsigned long attrs);
51
+
void (*unmap_resource)(struct device *dev, dma_addr_t dma_handle,
52
+
size_t size, enum dma_data_direction dir,
53
+
unsigned long attrs);
54
+
void (*sync_single_for_cpu)(struct device *dev, dma_addr_t dma_handle,
55
+
size_t size, enum dma_data_direction dir);
56
+
void (*sync_single_for_device)(struct device *dev,
57
+
dma_addr_t dma_handle, size_t size,
58
+
enum dma_data_direction dir);
59
+
void (*sync_sg_for_cpu)(struct device *dev, struct scatterlist *sg,
60
+
int nents, enum dma_data_direction dir);
61
+
void (*sync_sg_for_device)(struct device *dev, struct scatterlist *sg,
62
+
int nents, enum dma_data_direction dir);
63
+
void (*cache_sync)(struct device *dev, void *vaddr, size_t size,
64
+
enum dma_data_direction direction);
65
+
int (*dma_supported)(struct device *dev, u64 mask);
66
+
u64 (*get_required_mask)(struct device *dev);
67
+
size_t (*max_mapping_size)(struct device *dev);
68
+
unsigned long (*get_merge_boundary)(struct device *dev);
69
+
};
70
+
71
+
#ifdef CONFIG_DMA_OPS
72
+
#include <asm/dma-mapping.h>
73
+
74
+
static inline const struct dma_map_ops *get_dma_ops(struct device *dev)
75
+
{
76
+
if (dev->dma_ops)
77
+
return dev->dma_ops;
78
+
return get_arch_dma_ops(dev->bus);
79
+
}
80
+
81
+
static inline void set_dma_ops(struct device *dev,
82
+
const struct dma_map_ops *dma_ops)
83
+
{
84
+
dev->dma_ops = dma_ops;
85
+
}
86
+
#else /* CONFIG_DMA_OPS */
87
+
static inline const struct dma_map_ops *get_dma_ops(struct device *dev)
88
+
{
89
+
return NULL;
90
+
}
91
+
static inline void set_dma_ops(struct device *dev,
92
+
const struct dma_map_ops *dma_ops)
93
+
{
94
+
}
95
+
#endif /* CONFIG_DMA_OPS */
96
+
97
+
#ifdef CONFIG_DMA_DECLARE_COHERENT
98
+
int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
99
+
dma_addr_t device_addr, size_t size);
100
+
int dma_alloc_from_dev_coherent(struct device *dev, ssize_t size,
101
+
dma_addr_t *dma_handle, void **ret);
102
+
int dma_release_from_dev_coherent(struct device *dev, int order, void *vaddr);
103
+
int dma_mmap_from_dev_coherent(struct device *dev, struct vm_area_struct *vma,
104
+
void *cpu_addr, size_t size, int *ret);
105
+
106
+
void *dma_alloc_from_global_coherent(struct device *dev, ssize_t size,
107
+
dma_addr_t *dma_handle);
108
+
int dma_release_from_global_coherent(int order, void *vaddr);
109
+
int dma_mmap_from_global_coherent(struct vm_area_struct *vma, void *cpu_addr,
110
+
size_t size, int *ret);
111
+
112
+
#else
113
+
static inline int dma_declare_coherent_memory(struct device *dev,
114
+
phys_addr_t phys_addr, dma_addr_t device_addr, size_t size)
115
+
{
116
+
return -ENOSYS;
117
+
}
118
+
#define dma_alloc_from_dev_coherent(dev, size, handle, ret) (0)
119
+
#define dma_release_from_dev_coherent(dev, order, vaddr) (0)
120
+
#define dma_mmap_from_dev_coherent(dev, vma, vaddr, order, ret) (0)
121
+
122
+
static inline void *dma_alloc_from_global_coherent(struct device *dev,
123
+
ssize_t size, dma_addr_t *dma_handle)
124
+
{
125
+
return NULL;
126
+
}
127
+
static inline int dma_release_from_global_coherent(int order, void *vaddr)
128
+
{
129
+
return 0;
130
+
}
131
+
static inline int dma_mmap_from_global_coherent(struct vm_area_struct *vma,
132
+
void *cpu_addr, size_t size, int *ret)
133
+
{
134
+
return 0;
135
+
}
136
+
#endif /* CONFIG_DMA_DECLARE_COHERENT */
137
+
138
+
#ifdef CONFIG_ARCH_HAS_SETUP_DMA_OPS
139
+
void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
140
+
const struct iommu_ops *iommu, bool coherent);
141
+
#else
142
+
static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base,
143
+
u64 size, const struct iommu_ops *iommu, bool coherent)
144
+
{
145
+
}
146
+
#endif /* CONFIG_ARCH_HAS_SETUP_DMA_OPS */
147
+
148
+
#ifdef CONFIG_ARCH_HAS_TEARDOWN_DMA_OPS
149
+
void arch_teardown_dma_ops(struct device *dev);
150
+
#else
151
+
static inline void arch_teardown_dma_ops(struct device *dev)
152
+
{
153
+
}
154
+
#endif /* CONFIG_ARCH_HAS_TEARDOWN_DMA_OPS */
155
+
156
+
extern const struct dma_map_ops dma_dummy_ops;
157
+
158
+
#endif /* _LINUX_DMA_MAP_OPS_H */
+2
-166
include/linux/dma-mapping.h
+2
-166
include/linux/dma-mapping.h
···
62
62
*/
63
63
#define DMA_ATTR_PRIVILEGED (1UL << 9)
64
64
65
-
struct dma_map_ops {
66
-
void* (*alloc)(struct device *dev, size_t size,
67
-
dma_addr_t *dma_handle, gfp_t gfp,
68
-
unsigned long attrs);
69
-
void (*free)(struct device *dev, size_t size,
70
-
void *vaddr, dma_addr_t dma_handle,
71
-
unsigned long attrs);
72
-
struct page *(*alloc_pages)(struct device *dev, size_t size,
73
-
dma_addr_t *dma_handle, enum dma_data_direction dir,
74
-
gfp_t gfp);
75
-
void (*free_pages)(struct device *dev, size_t size, struct page *vaddr,
76
-
dma_addr_t dma_handle, enum dma_data_direction dir);
77
-
void* (*alloc_noncoherent)(struct device *dev, size_t size,
78
-
dma_addr_t *dma_handle, enum dma_data_direction dir,
79
-
gfp_t gfp);
80
-
void (*free_noncoherent)(struct device *dev, size_t size, void *vaddr,
81
-
dma_addr_t dma_handle, enum dma_data_direction dir);
82
-
int (*mmap)(struct device *, struct vm_area_struct *,
83
-
void *, dma_addr_t, size_t,
84
-
unsigned long attrs);
85
-
86
-
int (*get_sgtable)(struct device *dev, struct sg_table *sgt, void *,
87
-
dma_addr_t, size_t, unsigned long attrs);
88
-
89
-
dma_addr_t (*map_page)(struct device *dev, struct page *page,
90
-
unsigned long offset, size_t size,
91
-
enum dma_data_direction dir,
92
-
unsigned long attrs);
93
-
void (*unmap_page)(struct device *dev, dma_addr_t dma_handle,
94
-
size_t size, enum dma_data_direction dir,
95
-
unsigned long attrs);
96
-
/*
97
-
* map_sg returns 0 on error and a value > 0 on success.
98
-
* It should never return a value < 0.
99
-
*/
100
-
int (*map_sg)(struct device *dev, struct scatterlist *sg,
101
-
int nents, enum dma_data_direction dir,
102
-
unsigned long attrs);
103
-
void (*unmap_sg)(struct device *dev,
104
-
struct scatterlist *sg, int nents,
105
-
enum dma_data_direction dir,
106
-
unsigned long attrs);
107
-
dma_addr_t (*map_resource)(struct device *dev, phys_addr_t phys_addr,
108
-
size_t size, enum dma_data_direction dir,
109
-
unsigned long attrs);
110
-
void (*unmap_resource)(struct device *dev, dma_addr_t dma_handle,
111
-
size_t size, enum dma_data_direction dir,
112
-
unsigned long attrs);
113
-
void (*sync_single_for_cpu)(struct device *dev,
114
-
dma_addr_t dma_handle, size_t size,
115
-
enum dma_data_direction dir);
116
-
void (*sync_single_for_device)(struct device *dev,
117
-
dma_addr_t dma_handle, size_t size,
118
-
enum dma_data_direction dir);
119
-
void (*sync_sg_for_cpu)(struct device *dev,
120
-
struct scatterlist *sg, int nents,
121
-
enum dma_data_direction dir);
122
-
void (*sync_sg_for_device)(struct device *dev,
123
-
struct scatterlist *sg, int nents,
124
-
enum dma_data_direction dir);
125
-
int (*dma_supported)(struct device *dev, u64 mask);
126
-
u64 (*get_required_mask)(struct device *dev);
127
-
size_t (*max_mapping_size)(struct device *dev);
128
-
unsigned long (*get_merge_boundary)(struct device *dev);
129
-
};
130
-
131
65
/*
132
66
* A dma_addr_t can hold any valid DMA or bus address for the platform. It can
133
67
* be given to a device to use as a DMA source or target. It is specific to a
···
74
140
*/
75
141
#define DMA_MAPPING_ERROR (~(dma_addr_t)0)
76
142
77
-
extern const struct dma_map_ops dma_virt_ops;
78
-
extern const struct dma_map_ops dma_dummy_ops;
79
-
80
143
#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
81
144
82
-
#ifdef CONFIG_DMA_DECLARE_COHERENT
83
-
/*
84
-
* These three functions are only for dma allocator.
85
-
* Don't use them in device drivers.
86
-
*/
87
-
int dma_alloc_from_dev_coherent(struct device *dev, ssize_t size,
88
-
dma_addr_t *dma_handle, void **ret);
89
-
int dma_release_from_dev_coherent(struct device *dev, int order, void *vaddr);
90
-
91
-
int dma_mmap_from_dev_coherent(struct device *dev, struct vm_area_struct *vma,
92
-
void *cpu_addr, size_t size, int *ret);
93
-
94
-
void *dma_alloc_from_global_coherent(struct device *dev, ssize_t size, dma_addr_t *dma_handle);
95
-
int dma_release_from_global_coherent(int order, void *vaddr);
96
-
int dma_mmap_from_global_coherent(struct vm_area_struct *vma, void *cpu_addr,
97
-
size_t size, int *ret);
98
-
99
-
#else
100
-
#define dma_alloc_from_dev_coherent(dev, size, handle, ret) (0)
101
-
#define dma_release_from_dev_coherent(dev, order, vaddr) (0)
102
-
#define dma_mmap_from_dev_coherent(dev, vma, vaddr, order, ret) (0)
103
-
104
-
static inline void *dma_alloc_from_global_coherent(struct device *dev, ssize_t size,
105
-
dma_addr_t *dma_handle)
106
-
{
107
-
return NULL;
108
-
}
109
-
110
-
static inline int dma_release_from_global_coherent(int order, void *vaddr)
111
-
{
112
-
return 0;
113
-
}
114
-
115
-
static inline int dma_mmap_from_global_coherent(struct vm_area_struct *vma,
116
-
void *cpu_addr, size_t size,
117
-
int *ret)
118
-
{
119
-
return 0;
120
-
}
121
-
#endif /* CONFIG_DMA_DECLARE_COHERENT */
122
-
123
145
#ifdef CONFIG_HAS_DMA
124
-
#include <asm/dma-mapping.h>
125
-
126
-
#ifdef CONFIG_DMA_OPS
127
-
static inline const struct dma_map_ops *get_dma_ops(struct device *dev)
128
-
{
129
-
if (dev->dma_ops)
130
-
return dev->dma_ops;
131
-
return get_arch_dma_ops(dev->bus);
132
-
}
133
-
134
-
static inline void set_dma_ops(struct device *dev,
135
-
const struct dma_map_ops *dma_ops)
136
-
{
137
-
dev->dma_ops = dma_ops;
138
-
}
139
-
#else /* CONFIG_DMA_OPS */
140
-
static inline const struct dma_map_ops *get_dma_ops(struct device *dev)
141
-
{
142
-
return NULL;
143
-
}
144
-
static inline void set_dma_ops(struct device *dev,
145
-
const struct dma_map_ops *dma_ops)
146
-
{
147
-
}
148
-
#endif /* CONFIG_DMA_OPS */
149
-
150
146
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
151
147
{
152
148
debug_dma_mapping_error(dev, dma_addr);
···
459
595
dma_get_required_mask(dev);
460
596
}
461
597
462
-
#ifdef CONFIG_ARCH_HAS_SETUP_DMA_OPS
463
-
void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
464
-
const struct iommu_ops *iommu, bool coherent);
465
-
#else
466
-
static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base,
467
-
u64 size, const struct iommu_ops *iommu, bool coherent)
468
-
{
469
-
}
470
-
#endif /* CONFIG_ARCH_HAS_SETUP_DMA_OPS */
471
-
472
-
#ifdef CONFIG_ARCH_HAS_TEARDOWN_DMA_OPS
473
-
void arch_teardown_dma_ops(struct device *dev);
474
-
#else
475
-
static inline void arch_teardown_dma_ops(struct device *dev)
476
-
{
477
-
}
478
-
#endif /* CONFIG_ARCH_HAS_TEARDOWN_DMA_OPS */
479
-
480
598
static inline unsigned int dma_get_max_seg_size(struct device *dev)
481
599
{
482
600
if (dev->dma_parms && dev->dma_parms->max_segment_size)
···
518
672
return 1;
519
673
}
520
674
521
-
#ifdef CONFIG_DMA_DECLARE_COHERENT
522
-
int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
523
-
dma_addr_t device_addr, size_t size);
524
-
#else
525
-
static inline int
526
-
dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
527
-
dma_addr_t device_addr, size_t size)
528
-
{
529
-
return -ENOSYS;
530
-
}
531
-
#endif /* CONFIG_DMA_DECLARE_COHERENT */
532
-
533
675
static inline void *dmam_alloc_coherent(struct device *dev, size_t size,
534
676
dma_addr_t *dma_handle, gfp_t gfp)
535
677
{
···
574
740
*/
575
741
int dma_direct_set_offset(struct device *dev, phys_addr_t cpu_start,
576
742
dma_addr_t dma_start, u64 size);
743
+
744
+
extern const struct dma_map_ops dma_virt_ops;
577
745
578
746
#endif /* _LINUX_DMA_MAPPING_H */
+1
kernel/dma/coherent.c
+1
kernel/dma/coherent.c
+1
kernel/dma/direct.c
+1
kernel/dma/direct.c
+1
-1
kernel/dma/dummy.c
+1
-1
kernel/dma/dummy.c
+1
-1
kernel/dma/mapping.c
+1
-1
kernel/dma/mapping.c
+1
kernel/dma/ops_helpers.c
+1
kernel/dma/ops_helpers.c