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dma-mapping: always provide the dma_map_ops based implementation 

Move the generic implementation to <linux/dma-mapping.h> now that all
architectures support it and remove the HAVE_DMA_ATTR Kconfig symbol now
that everyone supports them.

[valentinrothberg@gmail.com: remove leftovers in Kconfig]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Helge Deller <deller@gmx.de>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2016-01-20 15:02:05 -08:00 committed by Linus Torvalds
parent bd38118f9c
commit e1c7e32453
70 changed files with 369 additions and 633 deletions
Documentation
DMA-API-HOWTO.txt
features/io/dma_map_attrs
arch-support.txt
arch
Kconfig
alpha
Kconfig
include/asm
dma-mapping.h
arc
Kconfig
include/asm
dma-mapping.h
arm
Kconfig
include/asm
dma-mapping.h
arm64
Kconfig
include/asm
dma-mapping.h
avr32
Kconfig
include/asm
dma-mapping.h
blackfin
Kconfig
include/asm
dma-mapping.h
c6x
Kconfig
include/asm
dma-mapping.h
cris
Kconfig
include/asm
dma-mapping.h
frv
Kconfig
include/asm
dma-mapping.h
h8300
Kconfig
include/asm
dma-mapping.h
hexagon
Kconfig
include/asm
dma-mapping.h
ia64
Kconfig
include/asm
dma-mapping.h
m68k
Kconfig
include/asm
dma-mapping.h
metag
Kconfig
include/asm
dma-mapping.h
microblaze
Kconfig
include/asm
dma-mapping.h
mips
Kconfig
include/asm
dma-mapping.h
mn10300
Kconfig
include/asm
dma-mapping.h
nios2
Kconfig
openrisc
Kconfig
include/asm
dma-mapping.h
parisc
Kconfig
include/asm
dma-mapping.h
powerpc
Kconfig
include/asm
dma-mapping.h
s390
Kconfig
include/asm
dma-mapping.h
sh
Kconfig
include/asm
dma-mapping.h
sparc
Kconfig
include/asm
dma-mapping.h
tile
Kconfig
include/asm
dma-mapping.h
unicore32
Kconfig
include/asm
dma-mapping.h
x86
Kconfig
include/asm
dma-mapping.h
xtensa
Kconfig
include/asm
dma-mapping.h
drivers
gpu/drm
Kconfig
imx
Kconfig
rcar-du
Kconfig
shmobile
Kconfig
sti
Kconfig
tilcdc
Kconfig
vc4
Kconfig
media/platform
Kconfig
include
asm-generic
dma-mapping-broken.hdma-mapping-common.h
linux
dma-attrs.hdma-mapping.h

10
Documentation/DMA-API-HOWTO.txt
View File

@ -951,16 +951,6 @@ to "Closing".
alignment constraints (e.g. the alignment constraints about 64-bit
objects).
3) Supporting multiple types of IOMMUs
If your architecture needs to support multiple types of IOMMUs, you
can use include/linux/asm-generic/dma-mapping-common.h. It's a
library to support the DMA API with multiple types of IOMMUs. Lots
of architectures (x86, powerpc, sh, alpha, ia64, microblaze and
sparc) use it. Choose one to see how it can be used. If you need to
support multiple types of IOMMUs in a single system, the example of
x86 or powerpc helps.
Closing
This document, and the API itself, would not be in its current

40
Documentation/features/io/dma_map_attrs/arch-support.txt
View File

@ -1,40 +0,0 @@
#
# Feature name: dma_map_attrs
# Kconfig: HAVE_DMA_ATTRS
# description: arch provides dma_*map*_attrs() APIs
#
-----------------------
| arch |status|
-----------------------
| alpha: | ok |
| arc: | TODO |
| arm: | ok |
| arm64: | ok |
| avr32: | TODO |
| blackfin: | TODO |
| c6x: | TODO |
| cris: | TODO |
| frv: | TODO |
| h8300: | ok |
| hexagon: | ok |
| ia64: | ok |
| m32r: | TODO |
| m68k: | TODO |
| metag: | TODO |
| microblaze: | ok |
| mips: | ok |
| mn10300: | TODO |
| nios2: | TODO |
| openrisc: | ok |
| parisc: | TODO |
| powerpc: | ok |
| s390: | ok |
| score: | TODO |
| sh: | ok |
| sparc: | ok |
| tile: | ok |
| um: | TODO |
| unicore32: | ok |
| x86: | ok |
| xtensa: | TODO |
-----------------------

3
arch/Kconfig
View File

@ -205,9 +205,6 @@ config HAVE_NMI_WATCHDOG
config HAVE_ARCH_TRACEHOOK
bool
config HAVE_DMA_ATTRS
bool
config HAVE_DMA_CONTIGUOUS
bool

1
arch/alpha/Kconfig
View File

@ -9,7 +9,6 @@ config ALPHA
select HAVE_OPROFILE
select HAVE_PCSPKR_PLATFORM
select HAVE_PERF_EVENTS
select HAVE_DMA_ATTRS
select VIRT_TO_BUS
select GENERIC_IRQ_PROBE
select AUTO_IRQ_AFFINITY if SMP

2
arch/alpha/include/asm/dma-mapping.h
View File

@ -10,8 +10,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return dma_ops;
}
#include <asm-generic/dma-mapping-common.h>
#define dma_cache_sync(dev, va, size, dir) ((void)0)
#endif /* _ALPHA_DMA_MAPPING_H */

1
arch/arc/Kconfig
View File

@ -38,7 +38,6 @@ config ARC
select OF_EARLY_FLATTREE
select PERF_USE_VMALLOC
select HAVE_DEBUG_STACKOVERFLOW
select HAVE_DMA_ATTRS
config TRACE_IRQFLAGS_SUPPORT
def_bool y

2
arch/arc/include/asm/dma-mapping.h
View File

@ -18,6 +18,4 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return &arc_dma_ops;
}
#include <asm-generic/dma-mapping-common.h>
#endif

1
arch/arm/Kconfig
View File

@ -47,7 +47,6 @@ config ARM
select HAVE_C_RECORDMCOUNT
select HAVE_DEBUG_KMEMLEAK
select HAVE_DMA_API_DEBUG
select HAVE_DMA_ATTRS
select HAVE_DMA_CONTIGUOUS if MMU
select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) && !CPU_ENDIAN_BE32 && MMU
select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU

7
arch/arm/include/asm/dma-mapping.h
View File

@ -41,13 +41,6 @@ static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops)
#define HAVE_ARCH_DMA_SUPPORTED 1
extern int dma_supported(struct device *dev, u64 mask);
/*
* Note that while the generic code provides dummy dma_{alloc,free}_noncoherent
* implementations, we don't provide a dma_cache_sync function so drivers using
* this API are highlighted with build warnings.
*/
#include <asm-generic/dma-mapping-common.h>
#ifdef __arch_page_to_dma
#error Please update to __arch_pfn_to_dma
#endif

1
arch/arm64/Kconfig
View File

@ -64,7 +64,6 @@ config ARM64
select HAVE_DEBUG_BUGVERBOSE
select HAVE_DEBUG_KMEMLEAK
select HAVE_DMA_API_DEBUG
select HAVE_DMA_ATTRS
select HAVE_DMA_CONTIGUOUS
select HAVE_DYNAMIC_FTRACE
select HAVE_EFFICIENT_UNALIGNED_ACCESS

2
arch/arm64/include/asm/dma-mapping.h
View File

@ -64,8 +64,6 @@ static inline bool is_device_dma_coherent(struct device *dev)
return dev->archdata.dma_coherent;
}
#include <asm-generic/dma-mapping-common.h>
static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
{
return (dma_addr_t)paddr;

1
arch/avr32/Kconfig
View File

@ -7,7 +7,6 @@ config AVR32
select HAVE_OPROFILE
select HAVE_KPROBES
select VIRT_TO_BUS
select HAVE_DMA_ATTRS
select GENERIC_IRQ_PROBE
select GENERIC_ATOMIC64
select HARDIRQS_SW_RESEND

2
arch/avr32/include/asm/dma-mapping.h
View File

@ -11,6 +11,4 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return &avr32_dma_ops;
}
#include <asm-generic/dma-mapping-common.h>
#endif /* __ASM_AVR32_DMA_MAPPING_H */

1
arch/blackfin/Kconfig
View File

@ -14,7 +14,6 @@ config BLACKFIN
def_bool y
select HAVE_ARCH_KGDB
select HAVE_ARCH_TRACEHOOK
select HAVE_DMA_ATTRS
select HAVE_DYNAMIC_FTRACE
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_FUNCTION_GRAPH_TRACER

2
arch/blackfin/include/asm/dma-mapping.h
View File

@ -43,6 +43,4 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return &bfin_dma_ops;
}
#include <asm-generic/dma-mapping-common.h>
#endif /* _BLACKFIN_DMA_MAPPING_H */

1
arch/c6x/Kconfig
View File

@ -18,7 +18,6 @@ config C6X
select GENERIC_CLOCKEVENTS
select MODULES_USE_ELF_RELA
select ARCH_NO_COHERENT_DMA_MMAP
select HAVE_DMA_ATTRS
config MMU
def_bool n

2
arch/c6x/include/asm/dma-mapping.h
View File

@ -24,8 +24,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return &c6x_dma_ops;
}
#include <asm-generic/dma-mapping-common.h>
extern void coherent_mem_init(u32 start, u32 size);
void *c6x_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
gfp_t gfp, struct dma_attrs *attrs);

1
arch/cris/Kconfig
View File

@ -54,7 +54,6 @@ config CRIS
select GENERIC_ATOMIC64
select HAVE_UID16
select VIRT_TO_BUS
select HAVE_DMA_ATTRS
select ARCH_WANT_IPC_PARSE_VERSION
select GENERIC_IRQ_SHOW
select GENERIC_IOMAP

2
arch/cris/include/asm/dma-mapping.h
View File

@ -16,8 +16,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
}
#endif
#include <asm-generic/dma-mapping-common.h>
static inline void
dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction)

1
arch/frv/Kconfig
View File

@ -16,7 +16,6 @@ config FRV
select OLD_SIGACTION
select HAVE_DEBUG_STACKOVERFLOW
select ARCH_NO_COHERENT_DMA_MMAP
select HAVE_DMA_ATTRS
config ZONE_DMA
bool

2
arch/frv/include/asm/dma-mapping.h
View File

@ -21,6 +21,4 @@ void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
flush_write_buffers();
}
#include <asm-generic/dma-mapping-common.h>
#endif /* _ASM_DMA_MAPPING_H */

1
arch/h8300/Kconfig
View File

@ -15,7 +15,6 @@ config H8300
select OF_IRQ
select OF_EARLY_FLATTREE
select HAVE_MEMBLOCK
select HAVE_DMA_ATTRS
select CLKSRC_OF
select H8300_TMR8

2
arch/h8300/include/asm/dma-mapping.h
View File

@ -8,6 +8,4 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return &h8300_dma_map_ops;
}
#include <asm-generic/dma-mapping-common.h>
#endif

1
arch/hexagon/Kconfig
View File

@ -27,7 +27,6 @@ config HEXAGON
select GENERIC_CLOCKEVENTS_BROADCAST
select MODULES_USE_ELF_RELA
select GENERIC_CPU_DEVICES
select HAVE_DMA_ATTRS
---help---
Qualcomm Hexagon is a processor architecture designed for high
performance and low power across a wide variety of applications.

2
arch/hexagon/include/asm/dma-mapping.h
View File

@ -49,8 +49,6 @@ extern int dma_is_consistent(struct device *dev, dma_addr_t dma_handle);
extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction);
#include <asm-generic/dma-mapping-common.h>
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
if (!dev->dma_mask)

1
arch/ia64/Kconfig
View File

@ -25,7 +25,6 @@ config IA64
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
select HAVE_FUNCTION_TRACER
select HAVE_DMA_ATTRS
select TTY
select HAVE_ARCH_TRACEHOOK
select HAVE_DMA_API_DEBUG

2
arch/ia64/include/asm/dma-mapping.h
View File

@ -25,8 +25,6 @@ extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int,
#define get_dma_ops(dev) platform_dma_get_ops(dev)
#include <asm-generic/dma-mapping-common.h>
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
if (!dev->dma_mask)

1
arch/m68k/Kconfig
View File

@ -23,7 +23,6 @@ config M68K
select MODULES_USE_ELF_RELA
select OLD_SIGSUSPEND3
select OLD_SIGACTION
select HAVE_DMA_ATTRS
config RWSEM_GENERIC_SPINLOCK
bool

2
arch/m68k/include/asm/dma-mapping.h
View File

@ -8,8 +8,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return &m68k_dma_ops;
}
#include <asm-generic/dma-mapping-common.h>
static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction dir)
{

1
arch/metag/Kconfig
View File

@ -29,7 +29,6 @@ config METAG
select OF
select OF_EARLY_FLATTREE
select SPARSE_IRQ
select HAVE_DMA_ATTRS
config STACKTRACE_SUPPORT
def_bool y

2
arch/metag/include/asm/dma-mapping.h
View File

@ -8,8 +8,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return &metag_dma_ops;
}
#include <asm-generic/dma-mapping-common.h>
/*
* dma_alloc_noncoherent() returns non-cacheable memory, so there's no need to
* do any flushing here.

1
arch/microblaze/Kconfig
View File

@ -19,7 +19,6 @@ config MICROBLAZE
select HAVE_ARCH_KGDB
select HAVE_DEBUG_KMEMLEAK
select HAVE_DMA_API_DEBUG
select HAVE_DMA_ATTRS
select HAVE_DYNAMIC_FTRACE
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_FUNCTION_GRAPH_TRACER

2
arch/microblaze/include/asm/dma-mapping.h
View File

@ -44,8 +44,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return &dma_direct_ops;
}
#include <asm-generic/dma-mapping-common.h>
static inline void __dma_sync(unsigned long paddr,
size_t size, enum dma_data_direction direction)
{

1
arch/mips/Kconfig
View File

@ -31,7 +31,6 @@ config MIPS
select RTC_LIB if !MACH_LOONGSON64
select GENERIC_ATOMIC64 if !64BIT
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select HAVE_DMA_ATTRS
select HAVE_DMA_CONTIGUOUS
select HAVE_DMA_API_DEBUG
select GENERIC_IRQ_PROBE

2
arch/mips/include/asm/dma-mapping.h
View File

@ -29,8 +29,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
static inline void dma_mark_clean(void *addr, size_t size) {}
#include <asm-generic/dma-mapping-common.h>
extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction);

1
arch/mn10300/Kconfig
View File

@ -15,7 +15,6 @@ config MN10300
select OLD_SIGACTION
select HAVE_DEBUG_STACKOVERFLOW
select ARCH_NO_COHERENT_DMA_MMAP
select HAVE_DMA_ATTRS
config AM33_2
def_bool n

2
arch/mn10300/include/asm/dma-mapping.h
View File

@ -28,6 +28,4 @@ void dma_cache_sync(void *vaddr, size_t size,
mn10300_dcache_flush_inv();
}
#include <asm-generic/dma-mapping-common.h>
#endif

1
arch/nios2/Kconfig
View File

@ -16,7 +16,6 @@ config NIOS2
select SOC_BUS
select SPARSE_IRQ
select USB_ARCH_HAS_HCD if USB_SUPPORT
select HAVE_DMA_ATTRS
config GENERIC_CSUM
def_bool y

3
arch/openrisc/Kconfig
View File

@ -29,9 +29,6 @@ config OPENRISC
config MMU
def_bool y
config HAVE_DMA_ATTRS
def_bool y
config RWSEM_GENERIC_SPINLOCK
def_bool y

2
arch/openrisc/include/asm/dma-mapping.h
View File

@ -42,6 +42,4 @@ static inline int dma_supported(struct device *dev, u64 dma_mask)
return dma_mask == DMA_BIT_MASK(32);
}
#include <asm-generic/dma-mapping-common.h>
#endif /* __ASM_OPENRISC_DMA_MAPPING_H */

1
arch/parisc/Kconfig
View File

@ -30,7 +30,6 @@ config PARISC
select HAVE_DEBUG_STACKOVERFLOW
select HAVE_ARCH_AUDITSYSCALL
select ARCH_NO_COHERENT_DMA_MMAP
select HAVE_DMA_ATTRS
help
The PA-RISC microprocessor is designed by Hewlett-Packard and used

2
arch/parisc/include/asm/dma-mapping.h
View File

@ -83,6 +83,4 @@ struct parisc_device;
void * sba_get_iommu(struct parisc_device *dev);
#endif
#include <asm-generic/dma-mapping-common.h>
#endif

1
arch/powerpc/Kconfig
View File

@ -108,7 +108,6 @@ config PPC
select HAVE_ARCH_TRACEHOOK
select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select HAVE_DMA_ATTRS
select HAVE_DMA_API_DEBUG
select HAVE_OPROFILE
select HAVE_DEBUG_KMEMLEAK

2
arch/powerpc/include/asm/dma-mapping.h
View File

@ -125,8 +125,6 @@ static inline void set_dma_offset(struct device *dev, dma_addr_t off)
#define HAVE_ARCH_DMA_SET_MASK 1
extern int dma_set_mask(struct device *dev, u64 dma_mask);
#include <asm-generic/dma-mapping-common.h>
extern int __dma_set_mask(struct device *dev, u64 dma_mask);
extern u64 __dma_get_required_mask(struct device *dev);

1
arch/s390/Kconfig
View File

@ -579,7 +579,6 @@ config QDIO
menuconfig PCI
bool "PCI support"
select HAVE_DMA_ATTRS
select PCI_MSI
select IOMMU_SUPPORT
help

2
arch/s390/include/asm/dma-mapping.h
View File

@ -23,8 +23,6 @@ static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
{
}
#include <asm-generic/dma-mapping-common.h>
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
if (!dev->dma_mask)

1
arch/sh/Kconfig
View File

@ -11,7 +11,6 @@ config SUPERH
select HAVE_GENERIC_DMA_COHERENT
select HAVE_ARCH_TRACEHOOK
select HAVE_DMA_API_DEBUG
select HAVE_DMA_ATTRS
select HAVE_PERF_EVENTS
select HAVE_DEBUG_BUGVERBOSE
select ARCH_HAVE_CUSTOM_GPIO_H

2
arch/sh/include/asm/dma-mapping.h
View File

@ -11,8 +11,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#define DMA_ERROR_CODE 0
#include <asm-generic/dma-mapping-common.h>
void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction dir);

1
arch/sparc/Kconfig
View File

@ -26,7 +26,6 @@ config SPARC
select RTC_CLASS
select RTC_DRV_M48T59
select RTC_SYSTOHC
select HAVE_DMA_ATTRS
select HAVE_DMA_API_DEBUG
select HAVE_ARCH_JUMP_LABEL if SPARC64
select GENERIC_IRQ_SHOW

2
arch/sparc/include/asm/dma-mapping.h
View File

@ -37,6 +37,4 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return dma_ops;
}
#include <asm-generic/dma-mapping-common.h>
#endif

1
arch/tile/Kconfig
View File

@ -5,7 +5,6 @@ config TILE
def_bool y
select HAVE_PERF_EVENTS
select USE_PMC if PERF_EVENTS
select HAVE_DMA_ATTRS
select HAVE_DMA_API_DEBUG
select HAVE_KVM if !TILEGX
select GENERIC_FIND_FIRST_BIT

3
arch/tile/include/asm/dma-mapping.h
View File

@ -73,9 +73,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
}
#define HAVE_ARCH_DMA_SET_MASK 1
#include <asm-generic/dma-mapping-common.h>
int dma_set_mask(struct device *dev, u64 mask);
/*

1
arch/unicore32/Kconfig
View File

@ -5,7 +5,6 @@ config UNICORE32
select ARCH_MIGHT_HAVE_PC_SERIO
select HAVE_MEMBLOCK
select HAVE_GENERIC_DMA_COHERENT
select HAVE_DMA_ATTRS
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_BZIP2
select GENERIC_ATOMIC64

2
arch/unicore32/include/asm/dma-mapping.h
View File

@ -28,8 +28,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return &swiotlb_dma_map_ops;
}
#include <asm-generic/dma-mapping-common.h>
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
if (dev && dev->dma_mask)

1
arch/x86/Kconfig
View File

@ -100,7 +100,6 @@ config X86
select HAVE_DEBUG_KMEMLEAK
select HAVE_DEBUG_STACKOVERFLOW
select HAVE_DMA_API_DEBUG
select HAVE_DMA_ATTRS
select HAVE_DMA_CONTIGUOUS
select HAVE_DYNAMIC_FTRACE
select HAVE_DYNAMIC_FTRACE_WITH_REGS

2
arch/x86/include/asm/dma-mapping.h
View File

@ -46,8 +46,6 @@ bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp);
#define HAVE_ARCH_DMA_SUPPORTED 1
extern int dma_supported(struct device *hwdev, u64 mask);
#include <asm-generic/dma-mapping-common.h>
extern void *dma_generic_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_addr, gfp_t flag,
struct dma_attrs *attrs);

1
arch/xtensa/Kconfig
View File

@ -15,7 +15,6 @@ config XTENSA
select GENERIC_PCI_IOMAP
select GENERIC_SCHED_CLOCK
select HAVE_DMA_API_DEBUG
select HAVE_DMA_ATTRS
select HAVE_FUNCTION_TRACER
select HAVE_FUTEX_CMPXCHG if !MMU
select HAVE_IRQ_TIME_ACCOUNTING

2
arch/xtensa/include/asm/dma-mapping.h
View File

@ -30,8 +30,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return &xtensa_dma_map_ops;
}
#include <asm-generic/dma-mapping-common.h>
void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction);

4
drivers/gpu/drm/Kconfig
View File

@ -82,13 +82,13 @@ config DRM_TTM
config DRM_GEM_CMA_HELPER
bool
depends on DRM && HAVE_DMA_ATTRS
depends on DRM
help
Choose this if you need the GEM CMA helper functions
config DRM_KMS_CMA_HELPER
bool
depends on DRM && HAVE_DMA_ATTRS
depends on DRM
select DRM_GEM_CMA_HELPER
select DRM_KMS_FB_HELPER
select FB_SYS_FILLRECT

2
drivers/gpu/drm/imx/Kconfig
View File

@ -5,7 +5,7 @@ config DRM_IMX
select VIDEOMODE_HELPERS
select DRM_GEM_CMA_HELPER
select DRM_KMS_CMA_HELPER
depends on DRM && (ARCH_MXC || ARCH_MULTIPLATFORM) && HAVE_DMA_ATTRS
depends on DRM && (ARCH_MXC || ARCH_MULTIPLATFORM)
depends on IMX_IPUV3_CORE
help
enable i.MX graphics support

2
drivers/gpu/drm/rcar-du/Kconfig
View File

@ -1,6 +1,6 @@
config DRM_RCAR_DU
tristate "DRM Support for R-Car Display Unit"
depends on DRM && ARM && HAVE_DMA_ATTRS && OF
depends on DRM && ARM && OF
depends on ARCH_SHMOBILE || COMPILE_TEST
select DRM_KMS_HELPER
select DRM_KMS_CMA_HELPER

2
drivers/gpu/drm/shmobile/Kconfig
View File

@ -1,6 +1,6 @@
config DRM_SHMOBILE
tristate "DRM Support for SH Mobile"
depends on DRM && ARM && HAVE_DMA_ATTRS
depends on DRM && ARM
depends on ARCH_SHMOBILE || COMPILE_TEST
depends on FB_SH_MOBILE_MERAM || !FB_SH_MOBILE_MERAM
select BACKLIGHT_CLASS_DEVICE

2
drivers/gpu/drm/sti/Kconfig
View File

@ -1,6 +1,6 @@
config DRM_STI
tristate "DRM Support for STMicroelectronics SoC stiH41x Series"
depends on DRM && (SOC_STIH415 || SOC_STIH416 || ARCH_MULTIPLATFORM) && HAVE_DMA_ATTRS
depends on DRM && (SOC_STIH415 || SOC_STIH416 || ARCH_MULTIPLATFORM)
select RESET_CONTROLLER
select DRM_KMS_HELPER
select DRM_GEM_CMA_HELPER

2
drivers/gpu/drm/tilcdc/Kconfig
View File

@ -1,6 +1,6 @@
config DRM_TILCDC
tristate "DRM Support for TI LCDC Display Controller"
depends on DRM && OF && ARM && HAVE_DMA_ATTRS
depends on DRM && OF && ARM
select DRM_KMS_HELPER
select DRM_KMS_FB_HELPER
select DRM_KMS_CMA_HELPER

2
drivers/gpu/drm/vc4/Kconfig
View File

@ -1,7 +1,7 @@
config DRM_VC4
tristate "Broadcom VC4 Graphics"
depends on ARCH_BCM2835 || COMPILE_TEST
depends on DRM && HAVE_DMA_ATTRS
depends on DRM
select DRM_KMS_HELPER
select DRM_KMS_CMA_HELPER
select DRM_GEM_CMA_HELPER

1
drivers/media/platform/Kconfig
View File

@ -216,7 +216,6 @@ config VIDEO_STI_BDISP
tristate "STMicroelectronics BDISP 2D blitter driver"
depends on VIDEO_DEV && VIDEO_V4L2
depends on ARCH_STI || COMPILE_TEST
depends on HAVE_DMA_ATTRS
select VIDEOBUF2_DMA_CONTIG
select V4L2_MEM2MEM_DEV
help

95
include/asm-generic/dma-mapping-broken.h
View File

@ -1,95 +0,0 @@
#ifndef _ASM_GENERIC_DMA_MAPPING_H
#define _ASM_GENERIC_DMA_MAPPING_H
/* define the dma api to allow compilation but not linking of
* dma dependent code. Code that depends on the dma-mapping
* API needs to set 'depends on HAS_DMA' in its Kconfig
*/
struct scatterlist;
extern void *
dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
gfp_t flag);
extern void
dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
dma_addr_t dma_handle);
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
struct dma_attrs *attrs)
{
/* attrs is not supported and ignored */
return dma_alloc_coherent(dev, size, dma_handle, flag);
}
static inline void dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
/* attrs is not supported and ignored */
dma_free_coherent(dev, size, cpu_addr, dma_handle);
}
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
extern dma_addr_t
dma_map_single(struct device *dev, void *ptr, size_t size,
enum dma_data_direction direction);
extern void
dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
enum dma_data_direction direction);
extern int
dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
enum dma_data_direction direction);
extern void
dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
enum dma_data_direction direction);
extern dma_addr_t
dma_map_page(struct device *dev, struct page *page, unsigned long offset,
size_t size, enum dma_data_direction direction);
extern void
dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
enum dma_data_direction direction);
extern void
dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
enum dma_data_direction direction);
extern void
dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
unsigned long offset, size_t size,
enum dma_data_direction direction);
extern void
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
enum dma_data_direction direction);
#define dma_sync_single_for_device dma_sync_single_for_cpu
#define dma_sync_single_range_for_device dma_sync_single_range_for_cpu
#define dma_sync_sg_for_device dma_sync_sg_for_cpu
extern int
dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
extern int
dma_supported(struct device *dev, u64 mask);
extern int
dma_set_mask(struct device *dev, u64 mask);
extern int
dma_get_cache_alignment(void);
extern void
dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction);
#endif /* _ASM_GENERIC_DMA_MAPPING_H */

358
include/asm-generic/dma-mapping-common.h
View File

@ -1,358 +0,0 @@
#ifndef _ASM_GENERIC_DMA_MAPPING_H
#define _ASM_GENERIC_DMA_MAPPING_H
#include <linux/kmemcheck.h>
#include <linux/bug.h>
#include <linux/scatterlist.h>
#include <linux/dma-debug.h>
#include <linux/dma-attrs.h>
#include <asm-generic/dma-coherent.h>
static inline dma_addr_t dma_map_single_attrs(struct device *dev, void *ptr,
size_t size,
enum dma_data_direction dir,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
dma_addr_t addr;
kmemcheck_mark_initialized(ptr, size);
BUG_ON(!valid_dma_direction(dir));
addr = ops->map_page(dev, virt_to_page(ptr),
(unsigned long)ptr & ~PAGE_MASK, size,
dir, attrs);
debug_dma_map_page(dev, virt_to_page(ptr),
(unsigned long)ptr & ~PAGE_MASK, size,
dir, addr, true);
return addr;
}
static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t addr,
size_t size,
enum dma_data_direction dir,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->unmap_page)
ops->unmap_page(dev, addr, size, dir, attrs);
debug_dma_unmap_page(dev, addr, size, dir, true);
}
/*
* dma_maps_sg_attrs returns 0 on error and > 0 on success.
* It should never return a value < 0.
*/
static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction dir,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
int i, ents;
struct scatterlist *s;
for_each_sg(sg, s, nents, i)
kmemcheck_mark_initialized(sg_virt(s), s->length);
BUG_ON(!valid_dma_direction(dir));
ents = ops->map_sg(dev, sg, nents, dir, attrs);
BUG_ON(ents < 0);
debug_dma_map_sg(dev, sg, nents, ents, dir);
return ents;
}
static inline void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction dir,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
debug_dma_unmap_sg(dev, sg, nents, dir);
if (ops->unmap_sg)
ops->unmap_sg(dev, sg, nents, dir, attrs);
}
static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
size_t offset, size_t size,
enum dma_data_direction dir)
{
struct dma_map_ops *ops = get_dma_ops(dev);
dma_addr_t addr;
kmemcheck_mark_initialized(page_address(page) + offset, size);
BUG_ON(!valid_dma_direction(dir));
addr = ops->map_page(dev, page, offset, size, dir, NULL);
debug_dma_map_page(dev, page, offset, size, dir, addr, false);
return addr;
}
static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
size_t size, enum dma_data_direction dir)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->unmap_page)
ops->unmap_page(dev, addr, size, dir, NULL);
debug_dma_unmap_page(dev, addr, size, dir, false);
}
static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr,
size_t size,
enum dma_data_direction dir)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->sync_single_for_cpu)
ops->sync_single_for_cpu(dev, addr, size, dir);
debug_dma_sync_single_for_cpu(dev, addr, size, dir);
}
static inline void dma_sync_single_for_device(struct device *dev,
dma_addr_t addr, size_t size,
enum dma_data_direction dir)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->sync_single_for_device)
ops->sync_single_for_device(dev, addr, size, dir);
debug_dma_sync_single_for_device(dev, addr, size, dir);
}
static inline void dma_sync_single_range_for_cpu(struct device *dev,
dma_addr_t addr,
unsigned long offset,
size_t size,
enum dma_data_direction dir)
{
const struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->sync_single_for_cpu)
ops->sync_single_for_cpu(dev, addr + offset, size, dir);
debug_dma_sync_single_range_for_cpu(dev, addr, offset, size, dir);
}
static inline void dma_sync_single_range_for_device(struct device *dev,
dma_addr_t addr,
unsigned long offset,
size_t size,
enum dma_data_direction dir)
{
const struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->sync_single_for_device)
ops->sync_single_for_device(dev, addr + offset, size, dir);
debug_dma_sync_single_range_for_device(dev, addr, offset, size, dir);
}
static inline void
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
int nelems, enum dma_data_direction dir)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->sync_sg_for_cpu)
ops->sync_sg_for_cpu(dev, sg, nelems, dir);
debug_dma_sync_sg_for_cpu(dev, sg, nelems, dir);
}
static inline void
dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
int nelems, enum dma_data_direction dir)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->sync_sg_for_device)
ops->sync_sg_for_device(dev, sg, nelems, dir);
debug_dma_sync_sg_for_device(dev, sg, nelems, dir);
}
#define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, NULL)
#define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, NULL)
#define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, NULL)
#define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, NULL)
extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma,
void *cpu_addr, dma_addr_t dma_addr, size_t size);
void *dma_common_contiguous_remap(struct page *page, size_t size,
unsigned long vm_flags,
pgprot_t prot, const void *caller);
void *dma_common_pages_remap(struct page **pages, size_t size,
unsigned long vm_flags, pgprot_t prot,
const void *caller);
void dma_common_free_remap(void *cpu_addr, size_t size, unsigned long vm_flags);
/**
* dma_mmap_attrs - map a coherent DMA allocation into user space
* @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
* @vma: vm_area_struct describing requested user mapping
* @cpu_addr: kernel CPU-view address returned from dma_alloc_attrs
* @handle: device-view address returned from dma_alloc_attrs
* @size: size of memory originally requested in dma_alloc_attrs
* @attrs: attributes of mapping properties requested in dma_alloc_attrs
*
* Map a coherent DMA buffer previously allocated by dma_alloc_attrs
* into user space. The coherent DMA buffer must not be freed by the
* driver until the user space mapping has been released.
*/
static inline int
dma_mmap_attrs(struct device *dev, struct vm_area_struct *vma, void *cpu_addr,
dma_addr_t dma_addr, size_t size, struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!ops);
if (ops->mmap)
return ops->mmap(dev, vma, cpu_addr, dma_addr, size, attrs);
return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size);
}
#define dma_mmap_coherent(d, v, c, h, s) dma_mmap_attrs(d, v, c, h, s, NULL)
int
dma_common_get_sgtable(struct device *dev, struct sg_table *sgt,
void *cpu_addr, dma_addr_t dma_addr, size_t size);
static inline int
dma_get_sgtable_attrs(struct device *dev, struct sg_table *sgt, void *cpu_addr,
dma_addr_t dma_addr, size_t size, struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!ops);
if (ops->get_sgtable)
return ops->get_sgtable(dev, sgt, cpu_addr, dma_addr, size,
attrs);
return dma_common_get_sgtable(dev, sgt, cpu_addr, dma_addr, size);
}
#define dma_get_sgtable(d, t, v, h, s) dma_get_sgtable_attrs(d, t, v, h, s, NULL)
#ifndef arch_dma_alloc_attrs
#define arch_dma_alloc_attrs(dev, flag) (true)
#endif
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
void *cpu_addr;
BUG_ON(!ops);
if (dma_alloc_from_coherent(dev, size, dma_handle, &cpu_addr))
return cpu_addr;
if (!arch_dma_alloc_attrs(&dev, &flag))
return NULL;
if (!ops->alloc)
return NULL;
cpu_addr = ops->alloc(dev, size, dma_handle, flag, attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr);
return cpu_addr;
}
static inline void dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!ops);
WARN_ON(irqs_disabled());
if (dma_release_from_coherent(dev, get_order(size), cpu_addr))
return;
if (!ops->free)
return;
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
ops->free(dev, size, cpu_addr, dma_handle, attrs);
}
static inline void *dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
return dma_alloc_attrs(dev, size, dma_handle, flag, NULL);
}
static inline void dma_free_coherent(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle)
{
return dma_free_attrs(dev, size, cpu_addr, dma_handle, NULL);
}
static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp)
{
DEFINE_DMA_ATTRS(attrs);
dma_set_attr(DMA_ATTR_NON_CONSISTENT, &attrs);
return dma_alloc_attrs(dev, size, dma_handle, gfp, &attrs);
}
static inline void dma_free_noncoherent(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle)
{
DEFINE_DMA_ATTRS(attrs);
dma_set_attr(DMA_ATTR_NON_CONSISTENT, &attrs);
dma_free_attrs(dev, size, cpu_addr, dma_handle, &attrs);
}
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
debug_dma_mapping_error(dev, dma_addr);
if (get_dma_ops(dev)->mapping_error)
return get_dma_ops(dev)->mapping_error(dev, dma_addr);
#ifdef DMA_ERROR_CODE
return dma_addr == DMA_ERROR_CODE;
#else
return 0;
#endif
}
#ifndef HAVE_ARCH_DMA_SUPPORTED
static inline int dma_supported(struct device *dev, u64 mask)
{
struct dma_map_ops *ops = get_dma_ops(dev);
if (!ops)
return 0;
if (!ops->dma_supported)
return 1;
return ops->dma_supported(dev, mask);
}
#endif
#ifndef HAVE_ARCH_DMA_SET_MASK
static inline int dma_set_mask(struct device *dev, u64 mask)
{
struct dma_map_ops *ops = get_dma_ops(dev);
if (ops->set_dma_mask)
return ops->set_dma_mask(dev, mask);
if (!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
*dev->dma_mask = mask;
return 0;
}
#endif
#endif

10
include/linux/dma-attrs.h
View File

@ -41,7 +41,6 @@ static inline void init_dma_attrs(struct dma_attrs *attrs)
bitmap_zero(attrs->flags, __DMA_ATTRS_LONGS);
}
#ifdef CONFIG_HAVE_DMA_ATTRS
/**
* dma_set_attr - set a specific attribute
* @attr: attribute to set
@ -67,14 +66,5 @@ static inline int dma_get_attr(enum dma_attr attr, struct dma_attrs *attrs)
BUG_ON(attr >= DMA_ATTR_MAX);
return test_bit(attr, attrs->flags);
}
#else /* !CONFIG_HAVE_DMA_ATTRS */
static inline void dma_set_attr(enum dma_attr attr, struct dma_attrs *attrs)
{
}
static inline int dma_get_attr(enum dma_attr attr, struct dma_attrs *attrs)
{
return 0;
}
#endif /* CONFIG_HAVE_DMA_ATTRS */
#endif /* _DMA_ATTR_H */

379
include/linux/dma-mapping.h
View File

@ -6,8 +6,12 @@
#include <linux/device.h>
#include <linux/err.h>
#include <linux/dma-attrs.h>
#include <linux/dma-debug.h>
#include <linux/dma-direction.h>
#include <linux/scatterlist.h>
#include <linux/kmemcheck.h>
#include <linux/bug.h>
#include <asm-generic/dma-coherent.h>
/*
* A dma_addr_t can hold any valid DMA or bus address for the platform.
@ -86,7 +90,363 @@ static inline int is_device_dma_capable(struct device *dev)
#ifdef CONFIG_HAS_DMA
#include <asm/dma-mapping.h>
#else
#include <asm-generic/dma-mapping-broken.h>
/*
* Define the dma api to allow compilation but not linking of
* dma dependent code. Code that depends on the dma-mapping
* API needs to set 'depends on HAS_DMA' in its Kconfig
*/
extern struct dma_map_ops bad_dma_ops;
static inline struct dma_map_ops *get_dma_ops(struct device *dev)
{
return &bad_dma_ops;
}
#endif
static inline dma_addr_t dma_map_single_attrs(struct device *dev, void *ptr,
size_t size,
enum dma_data_direction dir,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
dma_addr_t addr;
kmemcheck_mark_initialized(ptr, size);
BUG_ON(!valid_dma_direction(dir));
addr = ops->map_page(dev, virt_to_page(ptr),
(unsigned long)ptr & ~PAGE_MASK, size,
dir, attrs);
debug_dma_map_page(dev, virt_to_page(ptr),
(unsigned long)ptr & ~PAGE_MASK, size,
dir, addr, true);
return addr;
}
static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t addr,
size_t size,
enum dma_data_direction dir,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->unmap_page)
ops->unmap_page(dev, addr, size, dir, attrs);
debug_dma_unmap_page(dev, addr, size, dir, true);
}
/*
* dma_maps_sg_attrs returns 0 on error and > 0 on success.
* It should never return a value < 0.
*/
static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction dir,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
int i, ents;
struct scatterlist *s;
for_each_sg(sg, s, nents, i)
kmemcheck_mark_initialized(sg_virt(s), s->length);
BUG_ON(!valid_dma_direction(dir));
ents = ops->map_sg(dev, sg, nents, dir, attrs);
BUG_ON(ents < 0);
debug_dma_map_sg(dev, sg, nents, ents, dir);
return ents;
}
static inline void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction dir,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
debug_dma_unmap_sg(dev, sg, nents, dir);
if (ops->unmap_sg)
ops->unmap_sg(dev, sg, nents, dir, attrs);
}
static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
size_t offset, size_t size,
enum dma_data_direction dir)
{
struct dma_map_ops *ops = get_dma_ops(dev);
dma_addr_t addr;
kmemcheck_mark_initialized(page_address(page) + offset, size);
BUG_ON(!valid_dma_direction(dir));
addr = ops->map_page(dev, page, offset, size, dir, NULL);
debug_dma_map_page(dev, page, offset, size, dir, addr, false);
return addr;
}
static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
size_t size, enum dma_data_direction dir)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->unmap_page)
ops->unmap_page(dev, addr, size, dir, NULL);
debug_dma_unmap_page(dev, addr, size, dir, false);
}
static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr,
size_t size,
enum dma_data_direction dir)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->sync_single_for_cpu)
ops->sync_single_for_cpu(dev, addr, size, dir);
debug_dma_sync_single_for_cpu(dev, addr, size, dir);
}
static inline void dma_sync_single_for_device(struct device *dev,
dma_addr_t addr, size_t size,
enum dma_data_direction dir)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->sync_single_for_device)
ops->sync_single_for_device(dev, addr, size, dir);
debug_dma_sync_single_for_device(dev, addr, size, dir);
}
static inline void dma_sync_single_range_for_cpu(struct device *dev,
dma_addr_t addr,
unsigned long offset,
size_t size,
enum dma_data_direction dir)
{
const struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->sync_single_for_cpu)
ops->sync_single_for_cpu(dev, addr + offset, size, dir);
debug_dma_sync_single_range_for_cpu(dev, addr, offset, size, dir);
}
static inline void dma_sync_single_range_for_device(struct device *dev,
dma_addr_t addr,
unsigned long offset,
size_t size,
enum dma_data_direction dir)
{
const struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->sync_single_for_device)
ops->sync_single_for_device(dev, addr + offset, size, dir);
debug_dma_sync_single_range_for_device(dev, addr, offset, size, dir);
}
static inline void
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
int nelems, enum dma_data_direction dir)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->sync_sg_for_cpu)
ops->sync_sg_for_cpu(dev, sg, nelems, dir);
debug_dma_sync_sg_for_cpu(dev, sg, nelems, dir);
}
static inline void
dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
int nelems, enum dma_data_direction dir)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(dir));
if (ops->sync_sg_for_device)
ops->sync_sg_for_device(dev, sg, nelems, dir);
debug_dma_sync_sg_for_device(dev, sg, nelems, dir);
}
#define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, NULL)
#define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, NULL)
#define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, NULL)
#define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, NULL)
extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma,
void *cpu_addr, dma_addr_t dma_addr, size_t size);
void *dma_common_contiguous_remap(struct page *page, size_t size,
unsigned long vm_flags,
pgprot_t prot, const void *caller);
void *dma_common_pages_remap(struct page **pages, size_t size,
unsigned long vm_flags, pgprot_t prot,
const void *caller);
void dma_common_free_remap(void *cpu_addr, size_t size, unsigned long vm_flags);
/**
* dma_mmap_attrs - map a coherent DMA allocation into user space
* @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
* @vma: vm_area_struct describing requested user mapping
* @cpu_addr: kernel CPU-view address returned from dma_alloc_attrs
* @handle: device-view address returned from dma_alloc_attrs
* @size: size of memory originally requested in dma_alloc_attrs
* @attrs: attributes of mapping properties requested in dma_alloc_attrs
*
* Map a coherent DMA buffer previously allocated by dma_alloc_attrs
* into user space. The coherent DMA buffer must not be freed by the
* driver until the user space mapping has been released.
*/
static inline int
dma_mmap_attrs(struct device *dev, struct vm_area_struct *vma, void *cpu_addr,
dma_addr_t dma_addr, size_t size, struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!ops);
if (ops->mmap)
return ops->mmap(dev, vma, cpu_addr, dma_addr, size, attrs);
return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size);
}
#define dma_mmap_coherent(d, v, c, h, s) dma_mmap_attrs(d, v, c, h, s, NULL)
int
dma_common_get_sgtable(struct device *dev, struct sg_table *sgt,
void *cpu_addr, dma_addr_t dma_addr, size_t size);
static inline int
dma_get_sgtable_attrs(struct device *dev, struct sg_table *sgt, void *cpu_addr,
dma_addr_t dma_addr, size_t size, struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!ops);
if (ops->get_sgtable)
return ops->get_sgtable(dev, sgt, cpu_addr, dma_addr, size,
attrs);
return dma_common_get_sgtable(dev, sgt, cpu_addr, dma_addr, size);
}
#define dma_get_sgtable(d, t, v, h, s) dma_get_sgtable_attrs(d, t, v, h, s, NULL)
#ifndef arch_dma_alloc_attrs
#define arch_dma_alloc_attrs(dev, flag) (true)
#endif
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
void *cpu_addr;
BUG_ON(!ops);
if (dma_alloc_from_coherent(dev, size, dma_handle, &cpu_addr))
return cpu_addr;
if (!arch_dma_alloc_attrs(&dev, &flag))
return NULL;
if (!ops->alloc)
return NULL;
cpu_addr = ops->alloc(dev, size, dma_handle, flag, attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr);
return cpu_addr;
}
static inline void dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!ops);
WARN_ON(irqs_disabled());
if (dma_release_from_coherent(dev, get_order(size), cpu_addr))
return;
if (!ops->free)
return;
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
ops->free(dev, size, cpu_addr, dma_handle, attrs);
}
static inline void *dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
return dma_alloc_attrs(dev, size, dma_handle, flag, NULL);
}
static inline void dma_free_coherent(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle)
{
return dma_free_attrs(dev, size, cpu_addr, dma_handle, NULL);
}
static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp)
{
DEFINE_DMA_ATTRS(attrs);
dma_set_attr(DMA_ATTR_NON_CONSISTENT, &attrs);
return dma_alloc_attrs(dev, size, dma_handle, gfp, &attrs);
}
static inline void dma_free_noncoherent(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle)
{
DEFINE_DMA_ATTRS(attrs);
dma_set_attr(DMA_ATTR_NON_CONSISTENT, &attrs);
dma_free_attrs(dev, size, cpu_addr, dma_handle, &attrs);
}
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
debug_dma_mapping_error(dev, dma_addr);
if (get_dma_ops(dev)->mapping_error)
return get_dma_ops(dev)->mapping_error(dev, dma_addr);
#ifdef DMA_ERROR_CODE
return dma_addr == DMA_ERROR_CODE;
#else
return 0;
#endif
}
#ifndef HAVE_ARCH_DMA_SUPPORTED
static inline int dma_supported(struct device *dev, u64 mask)
{
struct dma_map_ops *ops = get_dma_ops(dev);
if (!ops)
return 0;
if (!ops->dma_supported)
return 1;
return ops->dma_supported(dev, mask);
}
#endif
#ifndef HAVE_ARCH_DMA_SET_MASK
static inline int dma_set_mask(struct device *dev, u64 mask)
{
struct dma_map_ops *ops = get_dma_ops(dev);
if (ops->set_dma_mask)
return ops->set_dma_mask(dev, mask);
if (!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
*dev->dma_mask = mask;
return 0;
}
#endif
static inline u64 dma_get_mask(struct device *dev)
@ -259,22 +619,6 @@ static inline void dmam_release_declared_memory(struct device *dev)
}
#endif /* ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY */
#ifndef CONFIG_HAVE_DMA_ATTRS
struct dma_attrs;
#define dma_map_single_attrs(dev, cpu_addr, size, dir, attrs) \
dma_map_single(dev, cpu_addr, size, dir)
#define dma_unmap_single_attrs(dev, dma_addr, size, dir, attrs) \
dma_unmap_single(dev, dma_addr, size, dir)
#define dma_map_sg_attrs(dev, sgl, nents, dir, attrs) \
dma_map_sg(dev, sgl, nents, dir)
#define dma_unmap_sg_attrs(dev, sgl, nents, dir, attrs) \
dma_unmap_sg(dev, sgl, nents, dir)
#else
static inline void *dma_alloc_writecombine(struct device *dev, size_t size,
dma_addr_t *dma_addr, gfp_t gfp)
{
@ -300,7 +644,6 @@ static inline int dma_mmap_writecombine(struct device *dev,
dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
return dma_mmap_attrs(dev, vma, cpu_addr, dma_addr, size, &attrs);
}
#endif /* CONFIG_HAVE_DMA_ATTRS */
#ifdef CONFIG_NEED_DMA_MAP_STATE
#define DEFINE_DMA_UNMAP_ADDR(ADDR_NAME) dma_addr_t ADDR_NAME