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authorChristoph Hellwig <hch@lst.de>2018-09-08 11:22:43 +0200
committerChristoph Hellwig <hch@lst.de>2018-09-20 09:01:15 +0200
commitbc3ec75de5452db59b683487867ba562b950708a (patch)
treead93be8bbaea3429f83fb0afd6b7597ec90a1e7b /arch
parentf3ecc0ff0457eae93503792c6fc35921fa8a6204 (diff)
download96b-common-bc3ec75de5452db59b683487867ba562b950708a.tar.gz
dma-mapping: merge direct and noncoherent ops
All the cache maintainance is already stubbed out when not enabled, but merging the two allows us to nicely handle the case where cache maintainance is required for some devices, but not others. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Paul Burton <paul.burton@mips.com> # MIPS parts
Diffstat (limited to 'arch')
-rw-r--r--arch/arc/Kconfig2
-rw-r--r--arch/arc/mm/dma.c16
-rw-r--r--arch/arm/mm/dma-mapping-nommu.c5
-rw-r--r--arch/c6x/Kconfig2
-rw-r--r--arch/hexagon/Kconfig2
-rw-r--r--arch/m68k/Kconfig2
-rw-r--r--arch/microblaze/Kconfig2
-rw-r--r--arch/mips/Kconfig1
-rw-r--r--arch/mips/include/asm/dma-mapping.h2
-rw-r--r--arch/mips/jazz/jazzdma.c6
-rw-r--r--arch/mips/mm/dma-noncoherent.c29
-rw-r--r--arch/nds32/Kconfig2
-rw-r--r--arch/nios2/Kconfig2
-rw-r--r--arch/openrisc/Kconfig2
-rw-r--r--arch/parisc/Kconfig2
-rw-r--r--arch/parisc/kernel/setup.c2
-rw-r--r--arch/sh/Kconfig3
-rw-r--r--arch/sparc/Kconfig2
-rw-r--r--arch/sparc/include/asm/dma-mapping.h4
-rw-r--r--arch/x86/kernel/amd_gart_64.c6
-rw-r--r--arch/xtensa/Kconfig2
21 files changed, 39 insertions, 57 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index b4441b0764d7..ca03694d518a 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -17,7 +17,7 @@ config ARC
select BUILDTIME_EXTABLE_SORT
select CLONE_BACKWARDS
select COMMON_CLK
- select DMA_NONCOHERENT_OPS
+ select DMA_DIRECT_OPS
select DMA_NONCOHERENT_MMAP
select GENERIC_ATOMIC64 if !ISA_ARCV2 || !(ARC_HAS_LL64 && ARC_HAS_LLSC)
select GENERIC_CLOCKEVENTS
diff --git a/arch/arc/mm/dma.c b/arch/arc/mm/dma.c
index c75d5c3470e3..535ed4a068ef 100644
--- a/arch/arc/mm/dma.c
+++ b/arch/arc/mm/dma.c
@@ -167,7 +167,7 @@ void arch_sync_dma_for_cpu(struct device *dev, phys_addr_t paddr,
}
/*
- * Plug in coherent or noncoherent dma ops
+ * Plug in direct dma map ops.
*/
void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
const struct iommu_ops *iommu, bool coherent)
@@ -175,13 +175,11 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
/*
* IOC hardware snoops all DMA traffic keeping the caches consistent
* with memory - eliding need for any explicit cache maintenance of
- * DMA buffers - so we can use dma_direct cache ops.
+ * DMA buffers.
*/
- if (is_isa_arcv2() && ioc_enable && coherent) {
- set_dma_ops(dev, &dma_direct_ops);
- dev_info(dev, "use dma_direct_ops cache ops\n");
- } else {
- set_dma_ops(dev, &dma_noncoherent_ops);
- dev_info(dev, "use dma_noncoherent_ops cache ops\n");
- }
+ if (is_isa_arcv2() && ioc_enable && coherent)
+ dev->dma_coherent = true;
+
+ dev_info(dev, "use %sncoherent DMA ops\n",
+ dev->dma_coherent ? "" : "non");
}
diff --git a/arch/arm/mm/dma-mapping-nommu.c b/arch/arm/mm/dma-mapping-nommu.c
index aa7aba302e76..0ad156f9985b 100644
--- a/arch/arm/mm/dma-mapping-nommu.c
+++ b/arch/arm/mm/dma-mapping-nommu.c
@@ -47,7 +47,8 @@ static void *arm_nommu_dma_alloc(struct device *dev, size_t size,
*/
if (attrs & DMA_ATTR_NON_CONSISTENT)
- return dma_direct_alloc(dev, size, dma_handle, gfp, attrs);
+ return dma_direct_alloc_pages(dev, size, dma_handle, gfp,
+ attrs);
ret = dma_alloc_from_global_coherent(size, dma_handle);
@@ -70,7 +71,7 @@ static void arm_nommu_dma_free(struct device *dev, size_t size,
unsigned long attrs)
{
if (attrs & DMA_ATTR_NON_CONSISTENT) {
- dma_direct_free(dev, size, cpu_addr, dma_addr, attrs);
+ dma_direct_free_pages(dev, size, cpu_addr, dma_addr, attrs);
} else {
int ret = dma_release_from_global_coherent(get_order(size),
cpu_addr);
diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig
index a641b0bf1611..f65a084607fd 100644
--- a/arch/c6x/Kconfig
+++ b/arch/c6x/Kconfig
@@ -9,7 +9,7 @@ config C6X
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select CLKDEV_LOOKUP
- select DMA_NONCOHERENT_OPS
+ select DMA_DIRECT_OPS
select GENERIC_ATOMIC64
select GENERIC_IRQ_SHOW
select HAVE_ARCH_TRACEHOOK
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index 6cee842a9b44..3ef46522e89f 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -30,7 +30,7 @@ config HEXAGON
select GENERIC_CLOCKEVENTS_BROADCAST
select MODULES_USE_ELF_RELA
select GENERIC_CPU_DEVICES
- select DMA_NONCOHERENT_OPS
+ select DMA_DIRECT_OPS
---help---
Qualcomm Hexagon is a processor architecture designed for high
performance and low power across a wide variety of applications.
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 070553791e97..c7b2a8d60a41 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -26,7 +26,7 @@ config M68K
select MODULES_USE_ELF_RELA
select OLD_SIGSUSPEND3
select OLD_SIGACTION
- select DMA_NONCOHERENT_OPS if HAS_DMA
+ select DMA_DIRECT_OPS if HAS_DMA
select HAVE_MEMBLOCK
select ARCH_DISCARD_MEMBLOCK
select NO_BOOTMEM
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index ace5c5bf1836..0f48ab6a8070 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -11,7 +11,7 @@ config MICROBLAZE
select TIMER_OF
select CLONE_BACKWARDS3
select COMMON_CLK
- select DMA_NONCOHERENT_OPS
+ select DMA_DIRECT_OPS
select DMA_NONCOHERENT_MMAP
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 54c52bd0d9d3..96da6e3396e1 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1121,7 +1121,6 @@ config DMA_NONCOHERENT
select NEED_DMA_MAP_STATE
select DMA_NONCOHERENT_MMAP
select DMA_NONCOHERENT_CACHE_SYNC
- select DMA_NONCOHERENT_OPS
config SYS_HAS_EARLY_PRINTK
bool
diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h
index 40d825c779de..b4c477eb46ce 100644
--- a/arch/mips/include/asm/dma-mapping.h
+++ b/arch/mips/include/asm/dma-mapping.h
@@ -12,8 +12,6 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
return &jazz_dma_ops;
#elif defined(CONFIG_SWIOTLB)
return &swiotlb_dma_ops;
-#elif defined(CONFIG_DMA_NONCOHERENT_OPS)
- return &dma_noncoherent_ops;
#else
return &dma_direct_ops;
#endif
diff --git a/arch/mips/jazz/jazzdma.c b/arch/mips/jazz/jazzdma.c
index d31bc2f01208..bb49dfa1a9a3 100644
--- a/arch/mips/jazz/jazzdma.c
+++ b/arch/mips/jazz/jazzdma.c
@@ -564,13 +564,13 @@ static void *jazz_dma_alloc(struct device *dev, size_t size,
{
void *ret;
- ret = dma_direct_alloc(dev, size, dma_handle, gfp, attrs);
+ ret = dma_direct_alloc_pages(dev, size, dma_handle, gfp, attrs);
if (!ret)
return NULL;
*dma_handle = vdma_alloc(virt_to_phys(ret), size);
if (*dma_handle == VDMA_ERROR) {
- dma_direct_free(dev, size, ret, *dma_handle, attrs);
+ dma_direct_free_pages(dev, size, ret, *dma_handle, attrs);
return NULL;
}
@@ -587,7 +587,7 @@ static void jazz_dma_free(struct device *dev, size_t size, void *vaddr,
vdma_free(dma_handle);
if (!(attrs & DMA_ATTR_NON_CONSISTENT))
vaddr = (void *)CAC_ADDR((unsigned long)vaddr);
- return dma_direct_free(dev, size, vaddr, dma_handle, attrs);
+ dma_direct_free_pages(dev, size, vaddr, dma_handle, attrs);
}
static dma_addr_t jazz_dma_map_page(struct device *dev, struct page *page,
diff --git a/arch/mips/mm/dma-noncoherent.c b/arch/mips/mm/dma-noncoherent.c
index d408ac51f56c..b01b9a3e424f 100644
--- a/arch/mips/mm/dma-noncoherent.c
+++ b/arch/mips/mm/dma-noncoherent.c
@@ -29,9 +29,6 @@
*/
static inline bool cpu_needs_post_dma_flush(struct device *dev)
{
- if (dev_is_dma_coherent(dev))
- return false;
-
switch (boot_cpu_type()) {
case CPU_R10000:
case CPU_R12000:
@@ -52,11 +49,8 @@ void *arch_dma_alloc(struct device *dev, size_t size,
{
void *ret;
- ret = dma_direct_alloc(dev, size, dma_handle, gfp, attrs);
- if (!ret)
- return NULL;
-
- if (!dev_is_dma_coherent(dev) && !(attrs & DMA_ATTR_NON_CONSISTENT)) {
+ ret = dma_direct_alloc_pages(dev, size, dma_handle, gfp, attrs);
+ if (!ret && !(attrs & DMA_ATTR_NON_CONSISTENT)) {
dma_cache_wback_inv((unsigned long) ret, size);
ret = (void *)UNCAC_ADDR(ret);
}
@@ -67,9 +61,9 @@ void *arch_dma_alloc(struct device *dev, size_t size,
void arch_dma_free(struct device *dev, size_t size, void *cpu_addr,
dma_addr_t dma_addr, unsigned long attrs)
{
- if (!(attrs & DMA_ATTR_NON_CONSISTENT) && !dev_is_dma_coherent(dev))
+ if (!(attrs & DMA_ATTR_NON_CONSISTENT))
cpu_addr = (void *)CAC_ADDR((unsigned long)cpu_addr);
- dma_direct_free(dev, size, cpu_addr, dma_addr, attrs);
+ dma_direct_free_pages(dev, size, cpu_addr, dma_addr, attrs);
}
int arch_dma_mmap(struct device *dev, struct vm_area_struct *vma,
@@ -78,16 +72,11 @@ int arch_dma_mmap(struct device *dev, struct vm_area_struct *vma,
{
unsigned long user_count = vma_pages(vma);
unsigned long count = PAGE_ALIGN(size) >> PAGE_SHIFT;
- unsigned long addr = (unsigned long)cpu_addr;
+ unsigned long addr = CAC_ADDR((unsigned long)cpu_addr);
unsigned long off = vma->vm_pgoff;
- unsigned long pfn;
+ unsigned long pfn = page_to_pfn(virt_to_page((void *)addr));
int ret = -ENXIO;
- if (!dev_is_dma_coherent(dev))
- addr = CAC_ADDR(addr);
-
- pfn = page_to_pfn(virt_to_page((void *)addr));
-
if (attrs & DMA_ATTR_WRITE_COMBINE)
vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
else
@@ -167,8 +156,7 @@ static inline void dma_sync_phys(phys_addr_t paddr, size_t size,
void arch_sync_dma_for_device(struct device *dev, phys_addr_t paddr,
size_t size, enum dma_data_direction dir)
{
- if (!dev_is_dma_coherent(dev))
- dma_sync_phys(paddr, size, dir);
+ dma_sync_phys(paddr, size, dir);
}
void arch_sync_dma_for_cpu(struct device *dev, phys_addr_t paddr,
@@ -183,6 +171,5 @@ void arch_dma_cache_sync(struct device *dev, void *vaddr, size_t size,
{
BUG_ON(direction == DMA_NONE);
- if (!dev_is_dma_coherent(dev))
- dma_sync_virt(vaddr, size, direction);
+ dma_sync_virt(vaddr, size, direction);
}
diff --git a/arch/nds32/Kconfig b/arch/nds32/Kconfig
index 7068f341133d..56992330026a 100644
--- a/arch/nds32/Kconfig
+++ b/arch/nds32/Kconfig
@@ -11,7 +11,7 @@ config NDS32
select CLKSRC_MMIO
select CLONE_BACKWARDS
select COMMON_CLK
- select DMA_NONCOHERENT_OPS
+ select DMA_DIRECT_OPS
select GENERIC_ATOMIC64
select GENERIC_CPU_DEVICES
select GENERIC_CLOCKEVENTS
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index f4ad1138e6b9..03965692fbfe 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -4,7 +4,7 @@ config NIOS2
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select ARCH_NO_SWAP
- select DMA_NONCOHERENT_OPS
+ select DMA_DIRECT_OPS
select TIMER_OF
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index e0081e734827..a655ae280637 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -7,7 +7,7 @@
config OPENRISC
def_bool y
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
- select DMA_NONCOHERENT_OPS
+ select DMA_DIRECT_OPS
select OF
select OF_EARLY_FLATTREE
select IRQ_DOMAIN
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 8e6d83f79e72..f1cd12afd943 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -186,7 +186,7 @@ config PA11
depends on PA7000 || PA7100LC || PA7200 || PA7300LC
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
- select DMA_NONCOHERENT_OPS
+ select DMA_DIRECT_OPS
select DMA_NONCOHERENT_CACHE_SYNC
config PREFETCH
diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c
index 4e87c35c22b7..755e89ec828a 100644
--- a/arch/parisc/kernel/setup.c
+++ b/arch/parisc/kernel/setup.c
@@ -102,7 +102,7 @@ void __init dma_ops_init(void)
case pcxl: /* falls through */
case pcxs:
case pcxt:
- hppa_dma_ops = &dma_noncoherent_ops;
+ hppa_dma_ops = &dma_direct_ops;
break;
default:
break;
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 1fb7b6d72baf..475d786a65b0 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -7,6 +7,7 @@ config SUPERH
select ARCH_NO_COHERENT_DMA_MMAP if !MMU
select HAVE_PATA_PLATFORM
select CLKDEV_LOOKUP
+ select DMA_DIRECT_OPS
select HAVE_IDE if HAS_IOPORT_MAP
select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
@@ -158,13 +159,11 @@ config SWAP_IO_SPACE
bool
config DMA_COHERENT
- select DMA_DIRECT_OPS
bool
config DMA_NONCOHERENT
def_bool !DMA_COHERENT
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
- select DMA_NONCOHERENT_OPS
config PGTABLE_LEVELS
default 3 if X2TLB
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index e6f2a38d2e61..7e2aa59fcc29 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -51,7 +51,7 @@ config SPARC
config SPARC32
def_bool !64BIT
select ARCH_HAS_SYNC_DMA_FOR_CPU
- select DMA_NONCOHERENT_OPS
+ select DMA_DIRECT_OPS
select GENERIC_ATOMIC64
select CLZ_TAB
select HAVE_UID16
diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h
index e17566376934..b0bb2fcaf1c9 100644
--- a/arch/sparc/include/asm/dma-mapping.h
+++ b/arch/sparc/include/asm/dma-mapping.h
@@ -14,11 +14,11 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
#ifdef CONFIG_SPARC_LEON
if (sparc_cpu_model == sparc_leon)
- return &dma_noncoherent_ops;
+ return &dma_direct_ops;
#endif
#if defined(CONFIG_SPARC32) && defined(CONFIG_PCI)
if (bus == &pci_bus_type)
- return &dma_noncoherent_ops;
+ return &dma_direct_ops;
#endif
return dma_ops;
}
diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c
index f299d8a479bb..3f9d1b4019bb 100644
--- a/arch/x86/kernel/amd_gart_64.c
+++ b/arch/x86/kernel/amd_gart_64.c
@@ -482,7 +482,7 @@ gart_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addr,
{
void *vaddr;
- vaddr = dma_direct_alloc(dev, size, dma_addr, flag, attrs);
+ vaddr = dma_direct_alloc_pages(dev, size, dma_addr, flag, attrs);
if (!vaddr ||
!force_iommu || dev->coherent_dma_mask <= DMA_BIT_MASK(24))
return vaddr;
@@ -494,7 +494,7 @@ gart_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addr,
goto out_free;
return vaddr;
out_free:
- dma_direct_free(dev, size, vaddr, *dma_addr, attrs);
+ dma_direct_free_pages(dev, size, vaddr, *dma_addr, attrs);
return NULL;
}
@@ -504,7 +504,7 @@ gart_free_coherent(struct device *dev, size_t size, void *vaddr,
dma_addr_t dma_addr, unsigned long attrs)
{
gart_unmap_page(dev, dma_addr, size, DMA_BIDIRECTIONAL, 0);
- dma_direct_free(dev, size, vaddr, dma_addr, attrs);
+ dma_direct_free_pages(dev, size, vaddr, dma_addr, attrs);
}
static int gart_mapping_error(struct device *dev, dma_addr_t dma_addr)
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 04d038f3b6fa..516694937b7a 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -12,7 +12,7 @@ config XTENSA
select BUILDTIME_EXTABLE_SORT
select CLONE_BACKWARDS
select COMMON_CLK
- select DMA_NONCOHERENT_OPS
+ select DMA_DIRECT_OPS
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
select GENERIC_IRQ_SHOW