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-rw-r--r--arch/arc/Kconfig4
-rw-r--r--arch/arc/mm/dma.c41
-rw-r--r--arch/arm/include/asm/dma-mapping.h2
-rw-r--r--arch/arm/mm/dma-mapping-nommu.c11
-rw-r--r--arch/c6x/Kconfig2
-rw-r--r--arch/hexagon/Kconfig2
-rw-r--r--arch/hexagon/include/asm/Kbuild1
-rw-r--r--arch/hexagon/include/asm/dma-mapping.h40
-rw-r--r--arch/hexagon/kernel/dma.c143
-rw-r--r--arch/ia64/include/asm/dma-mapping.h2
-rw-r--r--arch/ia64/include/asm/machvec.h7
-rw-r--r--arch/ia64/include/asm/machvec_init.h1
-rw-r--r--arch/ia64/include/asm/machvec_sn2.h2
-rw-r--r--arch/ia64/pci/pci.c26
-rw-r--r--arch/ia64/sn/pci/pci_dma.c4
-rw-r--r--arch/m68k/Kconfig2
-rw-r--r--arch/microblaze/Kconfig4
-rw-r--r--arch/microblaze/include/asm/pgtable.h2
-rw-r--r--arch/microblaze/kernel/dma.c22
-rw-r--r--arch/microblaze/mm/consistent.c3
-rw-r--r--arch/mips/Kconfig7
-rw-r--r--arch/mips/include/asm/Kbuild1
-rw-r--r--arch/mips/include/asm/device.h19
-rw-r--r--arch/mips/include/asm/dma-coherence.h6
-rw-r--r--arch/mips/include/asm/dma-mapping.h4
-rw-r--r--arch/mips/jazz/jazzdma.c7
-rw-r--r--arch/mips/kernel/setup.c2
-rw-r--r--arch/mips/mm/c-r4k.c17
-rw-r--r--arch/mips/mm/dma-noncoherent.c79
-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/unicore32/Kconfig2
-rw-r--r--arch/unicore32/include/asm/Kbuild1
-rw-r--r--arch/unicore32/include/asm/dma-mapping.h22
-rw-r--r--arch/unicore32/mm/init.c3
-rw-r--r--arch/x86/kernel/amd_gart_64.c6
-rw-r--r--arch/xtensa/Kconfig2
43 files changed, 92 insertions, 426 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index a045f3086047..e98c6b8e6186 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -9,6 +9,7 @@
config ARC
def_bool y
select ARC_TIMERS
+ select ARCH_HAS_DMA_COHERENT_TO_PFN
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
@@ -17,8 +18,7 @@ config ARC
select BUILDTIME_EXTABLE_SORT
select CLONE_BACKWARDS
select COMMON_CLK
- select DMA_NONCOHERENT_OPS
- select DMA_NONCOHERENT_MMAP
+ select DMA_DIRECT_OPS
select GENERIC_ATOMIC64 if !ISA_ARCV2 || !(ARC_HAS_LL64 && ARC_HAS_LLSC)
select GENERIC_CLOCKEVENTS
select GENERIC_FIND_FIRST_BIT
diff --git a/arch/arc/mm/dma.c b/arch/arc/mm/dma.c
index c75d5c3470e3..db203ff69ccf 100644
--- a/arch/arc/mm/dma.c
+++ b/arch/arc/mm/dma.c
@@ -84,29 +84,10 @@ void arch_dma_free(struct device *dev, size_t size, void *vaddr,
__free_pages(page, get_order(size));
}
-int arch_dma_mmap(struct device *dev, struct vm_area_struct *vma,
- void *cpu_addr, dma_addr_t dma_addr, size_t size,
- unsigned long attrs)
+long arch_dma_coherent_to_pfn(struct device *dev, void *cpu_addr,
+ dma_addr_t dma_addr)
{
- unsigned long user_count = vma_pages(vma);
- unsigned long count = PAGE_ALIGN(size) >> PAGE_SHIFT;
- unsigned long pfn = __phys_to_pfn(dma_addr);
- unsigned long off = vma->vm_pgoff;
- int ret = -ENXIO;
-
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-
- if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret))
- return ret;
-
- if (off < count && user_count <= (count - off)) {
- ret = remap_pfn_range(vma, vma->vm_start,
- pfn + off,
- user_count << PAGE_SHIFT,
- vma->vm_page_prot);
- }
-
- return ret;
+ return __phys_to_pfn(dma_addr);
}
/*
@@ -167,7 +148,7 @@ 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 +156,11 @@ 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/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index 8436f6ade57d..965b7c846ecb 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -100,8 +100,10 @@ static inline unsigned long dma_max_pfn(struct device *dev)
extern void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
const struct iommu_ops *iommu, bool coherent);
+#ifdef CONFIG_MMU
#define arch_teardown_dma_ops arch_teardown_dma_ops
extern void arch_teardown_dma_ops(struct device *dev);
+#endif
/* do not use this function in a driver */
static inline bool is_device_dma_coherent(struct device *dev)
diff --git a/arch/arm/mm/dma-mapping-nommu.c b/arch/arm/mm/dma-mapping-nommu.c
index f448a0663b10..712416ecd8e6 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);
@@ -90,7 +91,7 @@ static int arm_nommu_dma_mmap(struct device *dev, struct vm_area_struct *vma,
if (dma_mmap_from_global_coherent(vma, cpu_addr, size, &ret))
return ret;
- return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size);
+ return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size, attrs);
}
@@ -237,7 +238,3 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
set_dma_ops(dev, dma_ops);
}
-
-void arch_teardown_dma_ops(struct device *dev)
-{
-}
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 89a4b22f34d9..3ef46522e89f 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -4,6 +4,7 @@ comment "Linux Kernel Configuration for Hexagon"
config HEXAGON
def_bool y
+ select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select ARCH_NO_PREEMPT
select HAVE_OPROFILE
# Other pending projects/to-do items.
@@ -29,6 +30,7 @@ config HEXAGON
select GENERIC_CLOCKEVENTS_BROADCAST
select MODULES_USE_ELF_RELA
select GENERIC_CPU_DEVICES
+ 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/hexagon/include/asm/Kbuild b/arch/hexagon/include/asm/Kbuild
index dd2fd9c0d292..47c4da3d64a4 100644
--- a/arch/hexagon/include/asm/Kbuild
+++ b/arch/hexagon/include/asm/Kbuild
@@ -6,6 +6,7 @@ generic-y += compat.h
generic-y += current.h
generic-y += device.h
generic-y += div64.h
+generic-y += dma-mapping.h
generic-y += emergency-restart.h
generic-y += extable.h
generic-y += fb.h
diff --git a/arch/hexagon/include/asm/dma-mapping.h b/arch/hexagon/include/asm/dma-mapping.h
deleted file mode 100644
index 263f6acbfb0f..000000000000
--- a/arch/hexagon/include/asm/dma-mapping.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * DMA operations for the Hexagon architecture
- *
- * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- */
-
-#ifndef _ASM_DMA_MAPPING_H
-#define _ASM_DMA_MAPPING_H
-
-#include <linux/types.h>
-#include <linux/cache.h>
-#include <linux/mm.h>
-#include <linux/scatterlist.h>
-#include <linux/dma-debug.h>
-#include <asm/io.h>
-
-struct device;
-
-extern const struct dma_map_ops *dma_ops;
-
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
-{
- return dma_ops;
-}
-
-#endif
diff --git a/arch/hexagon/kernel/dma.c b/arch/hexagon/kernel/dma.c
index 7ebe7ad19d15..706699374444 100644
--- a/arch/hexagon/kernel/dma.c
+++ b/arch/hexagon/kernel/dma.c
@@ -18,32 +18,19 @@
* 02110-1301, USA.
*/
-#include <linux/dma-mapping.h>
-#include <linux/dma-direct.h>
+#include <linux/dma-noncoherent.h>
#include <linux/bootmem.h>
#include <linux/genalloc.h>
-#include <asm/dma-mapping.h>
#include <linux/module.h>
#include <asm/page.h>
-#define HEXAGON_MAPPING_ERROR 0
-
-const struct dma_map_ops *dma_ops;
-EXPORT_SYMBOL(dma_ops);
-
-static inline void *dma_addr_to_virt(dma_addr_t dma_addr)
-{
- return phys_to_virt((unsigned long) dma_addr);
-}
-
static struct gen_pool *coherent_pool;
/* Allocates from a pool of uncached memory that was reserved at boot time */
-static void *hexagon_dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_addr, gfp_t flag,
- unsigned long attrs)
+void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_addr,
+ gfp_t flag, unsigned long attrs)
{
void *ret;
@@ -75,58 +62,17 @@ static void *hexagon_dma_alloc_coherent(struct device *dev, size_t size,
return ret;
}
-static void hexagon_free_coherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_addr, unsigned long attrs)
+void arch_dma_free(struct device *dev, size_t size, void *vaddr,
+ dma_addr_t dma_addr, unsigned long attrs)
{
gen_pool_free(coherent_pool, (unsigned long) vaddr, size);
}
-static int check_addr(const char *name, struct device *hwdev,
- dma_addr_t bus, size_t size)
-{
- if (hwdev && hwdev->dma_mask && !dma_capable(hwdev, bus, size)) {
- if (*hwdev->dma_mask >= DMA_BIT_MASK(32))
- printk(KERN_ERR
- "%s: overflow %Lx+%zu of device mask %Lx\n",
- name, (long long)bus, size,
- (long long)*hwdev->dma_mask);
- return 0;
- }
- return 1;
-}
-
-static int hexagon_map_sg(struct device *hwdev, struct scatterlist *sg,
- int nents, enum dma_data_direction dir,
- unsigned long attrs)
+void arch_sync_dma_for_device(struct device *dev, phys_addr_t paddr,
+ size_t size, enum dma_data_direction dir)
{
- struct scatterlist *s;
- int i;
-
- WARN_ON(nents == 0 || sg[0].length == 0);
-
- for_each_sg(sg, s, nents, i) {
- s->dma_address = sg_phys(s);
- if (!check_addr("map_sg", hwdev, s->dma_address, s->length))
- return 0;
-
- s->dma_length = s->length;
+ void *addr = phys_to_virt(paddr);
- if (attrs & DMA_ATTR_SKIP_CPU_SYNC)
- continue;
-
- flush_dcache_range(dma_addr_to_virt(s->dma_address),
- dma_addr_to_virt(s->dma_address + s->length));
- }
-
- return nents;
-}
-
-/*
- * address is virtual
- */
-static inline void dma_sync(void *addr, size_t size,
- enum dma_data_direction dir)
-{
switch (dir) {
case DMA_TO_DEVICE:
hexagon_clean_dcache_range((unsigned long) addr,
@@ -144,76 +90,3 @@ static inline void dma_sync(void *addr, size_t size,
BUG();
}
}
-
-/**
- * hexagon_map_page() - maps an address for device DMA
- * @dev: pointer to DMA device
- * @page: pointer to page struct of DMA memory
- * @offset: offset within page
- * @size: size of memory to map
- * @dir: transfer direction
- * @attrs: pointer to DMA attrs (not used)
- *
- * Called to map a memory address to a DMA address prior
- * to accesses to/from device.
- *
- * We don't particularly have many hoops to jump through
- * so far. Straight translation between phys and virtual.
- *
- * DMA is not cache coherent so sync is necessary; this
- * seems to be a convenient place to do it.
- *
- */
-static dma_addr_t hexagon_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size,
- enum dma_data_direction dir,
- unsigned long attrs)
-{
- dma_addr_t bus = page_to_phys(page) + offset;
- WARN_ON(size == 0);
-
- if (!check_addr("map_single", dev, bus, size))
- return HEXAGON_MAPPING_ERROR;
-
- if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
- dma_sync(dma_addr_to_virt(bus), size, dir);
-
- return bus;
-}
-
-static void hexagon_sync_single_for_cpu(struct device *dev,
- dma_addr_t dma_handle, size_t size,
- enum dma_data_direction dir)
-{
- dma_sync(dma_addr_to_virt(dma_handle), size, dir);
-}
-
-static void hexagon_sync_single_for_device(struct device *dev,
- dma_addr_t dma_handle, size_t size,
- enum dma_data_direction dir)
-{
- dma_sync(dma_addr_to_virt(dma_handle), size, dir);
-}
-
-static int hexagon_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- return dma_addr == HEXAGON_MAPPING_ERROR;
-}
-
-const struct dma_map_ops hexagon_dma_ops = {
- .alloc = hexagon_dma_alloc_coherent,
- .free = hexagon_free_coherent,
- .map_sg = hexagon_map_sg,
- .map_page = hexagon_map_page,
- .sync_single_for_cpu = hexagon_sync_single_for_cpu,
- .sync_single_for_device = hexagon_sync_single_for_device,
- .mapping_error = hexagon_mapping_error,
-};
-
-void __init hexagon_dma_init(void)
-{
- if (dma_ops)
- return;
-
- dma_ops = &hexagon_dma_ops;
-}
diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h
index 76e4d6632d68..522745ae67bb 100644
--- a/arch/ia64/include/asm/dma-mapping.h
+++ b/arch/ia64/include/asm/dma-mapping.h
@@ -10,8 +10,6 @@
#include <linux/scatterlist.h>
#include <linux/dma-debug.h>
-#define ARCH_HAS_DMA_GET_REQUIRED_MASK
-
extern const struct dma_map_ops *dma_ops;
extern struct ia64_machine_vector ia64_mv;
extern void set_iommu_machvec(void);
diff --git a/arch/ia64/include/asm/machvec.h b/arch/ia64/include/asm/machvec.h
index 267f4f170191..5133739966bc 100644
--- a/arch/ia64/include/asm/machvec.h
+++ b/arch/ia64/include/asm/machvec.h
@@ -44,7 +44,6 @@ typedef void ia64_mv_kernel_launch_event_t(void);
/* DMA-mapping interface: */
typedef void ia64_mv_dma_init (void);
-typedef u64 ia64_mv_dma_get_required_mask (struct device *);
typedef const struct dma_map_ops *ia64_mv_dma_get_ops(struct device *);
/*
@@ -127,7 +126,6 @@ extern void machvec_tlb_migrate_finish (struct mm_struct *);
# define platform_global_tlb_purge ia64_mv.global_tlb_purge
# define platform_tlb_migrate_finish ia64_mv.tlb_migrate_finish
# define platform_dma_init ia64_mv.dma_init
-# define platform_dma_get_required_mask ia64_mv.dma_get_required_mask
# define platform_dma_get_ops ia64_mv.dma_get_ops
# define platform_irq_to_vector ia64_mv.irq_to_vector
# define platform_local_vector_to_irq ia64_mv.local_vector_to_irq
@@ -171,7 +169,6 @@ struct ia64_machine_vector {
ia64_mv_global_tlb_purge_t *global_tlb_purge;
ia64_mv_tlb_migrate_finish_t *tlb_migrate_finish;
ia64_mv_dma_init *dma_init;
- ia64_mv_dma_get_required_mask *dma_get_required_mask;
ia64_mv_dma_get_ops *dma_get_ops;
ia64_mv_irq_to_vector *irq_to_vector;
ia64_mv_local_vector_to_irq *local_vector_to_irq;
@@ -211,7 +208,6 @@ struct ia64_machine_vector {
platform_global_tlb_purge, \
platform_tlb_migrate_finish, \
platform_dma_init, \
- platform_dma_get_required_mask, \
platform_dma_get_ops, \
platform_irq_to_vector, \
platform_local_vector_to_irq, \
@@ -286,9 +282,6 @@ extern const struct dma_map_ops *dma_get_ops(struct device *);
#ifndef platform_dma_get_ops
# define platform_dma_get_ops dma_get_ops
#endif
-#ifndef platform_dma_get_required_mask
-# define platform_dma_get_required_mask ia64_dma_get_required_mask
-#endif
#ifndef platform_irq_to_vector
# define platform_irq_to_vector __ia64_irq_to_vector
#endif
diff --git a/arch/ia64/include/asm/machvec_init.h b/arch/ia64/include/asm/machvec_init.h
index 2b32fd06b7c6..2aafb69a3787 100644
--- a/arch/ia64/include/asm/machvec_init.h
+++ b/arch/ia64/include/asm/machvec_init.h
@@ -4,7 +4,6 @@
extern ia64_mv_send_ipi_t ia64_send_ipi;
extern ia64_mv_global_tlb_purge_t ia64_global_tlb_purge;
-extern ia64_mv_dma_get_required_mask ia64_dma_get_required_mask;
extern ia64_mv_irq_to_vector __ia64_irq_to_vector;
extern ia64_mv_local_vector_to_irq __ia64_local_vector_to_irq;
extern ia64_mv_pci_get_legacy_mem_t ia64_pci_get_legacy_mem;
diff --git a/arch/ia64/include/asm/machvec_sn2.h b/arch/ia64/include/asm/machvec_sn2.h
index ece9fa85be88..b5153d300289 100644
--- a/arch/ia64/include/asm/machvec_sn2.h
+++ b/arch/ia64/include/asm/machvec_sn2.h
@@ -55,7 +55,6 @@ extern ia64_mv_readb_t __sn_readb_relaxed;
extern ia64_mv_readw_t __sn_readw_relaxed;
extern ia64_mv_readl_t __sn_readl_relaxed;
extern ia64_mv_readq_t __sn_readq_relaxed;
-extern ia64_mv_dma_get_required_mask sn_dma_get_required_mask;
extern ia64_mv_dma_init sn_dma_init;
extern ia64_mv_migrate_t sn_migrate;
extern ia64_mv_kernel_launch_event_t sn_kernel_launch_event;
@@ -100,7 +99,6 @@ extern ia64_mv_pci_fixup_bus_t sn_pci_fixup_bus;
#define platform_pci_get_legacy_mem sn_pci_get_legacy_mem
#define platform_pci_legacy_read sn_pci_legacy_read
#define platform_pci_legacy_write sn_pci_legacy_write
-#define platform_dma_get_required_mask sn_dma_get_required_mask
#define platform_dma_init sn_dma_init
#define platform_migrate sn_migrate
#define platform_kernel_launch_event sn_kernel_launch_event
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 7ccc64d5fe3e..5d71800df431 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -568,32 +568,6 @@ static void __init set_pci_dfl_cacheline_size(void)
pci_dfl_cache_line_size = (1 << cci.pcci_line_size) / 4;
}
-u64 ia64_dma_get_required_mask(struct device *dev)
-{
- u32 low_totalram = ((max_pfn - 1) << PAGE_SHIFT);
- u32 high_totalram = ((max_pfn - 1) >> (32 - PAGE_SHIFT));
- u64 mask;
-
- if (!high_totalram) {
- /* convert to mask just covering totalram */
- low_totalram = (1 << (fls(low_totalram) - 1));
- low_totalram += low_totalram - 1;
- mask = low_totalram;
- } else {
- high_totalram = (1 << (fls(high_totalram) - 1));
- high_totalram += high_totalram - 1;
- mask = (((u64)high_totalram) << 32) + 0xffffffff;
- }
- return mask;
-}
-EXPORT_SYMBOL_GPL(ia64_dma_get_required_mask);
-
-u64 dma_get_required_mask(struct device *dev)
-{
- return platform_dma_get_required_mask(dev);
-}
-EXPORT_SYMBOL_GPL(dma_get_required_mask);
-
static int __init pcibios_init(void)
{
set_pci_dfl_cacheline_size();
diff --git a/arch/ia64/sn/pci/pci_dma.c b/arch/ia64/sn/pci/pci_dma.c
index 74c934a997bb..96eb2567718a 100644
--- a/arch/ia64/sn/pci/pci_dma.c
+++ b/arch/ia64/sn/pci/pci_dma.c
@@ -344,11 +344,10 @@ static int sn_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
return 0;
}
-u64 sn_dma_get_required_mask(struct device *dev)
+static u64 sn_dma_get_required_mask(struct device *dev)
{
return DMA_BIT_MASK(64);
}
-EXPORT_SYMBOL_GPL(sn_dma_get_required_mask);
char *sn_pci_get_legacy_mem(struct pci_bus *bus)
{
@@ -473,6 +472,7 @@ static struct dma_map_ops sn_dma_ops = {
.sync_sg_for_device = sn_dma_sync_sg_for_device,
.mapping_error = sn_dma_mapping_error,
.dma_supported = sn_dma_supported,
+ .get_required_mask = sn_dma_get_required_mask,
};
void sn_dma_init(void)
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..164a4857737a 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -1,6 +1,7 @@
config MICROBLAZE
def_bool y
select ARCH_NO_SWAP
+ select ARCH_HAS_DMA_COHERENT_TO_PFN if MMU
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
@@ -11,8 +12,7 @@ config MICROBLAZE
select TIMER_OF
select CLONE_BACKWARDS3
select COMMON_CLK
- select DMA_NONCOHERENT_OPS
- select DMA_NONCOHERENT_MMAP
+ select DMA_DIRECT_OPS
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
select GENERIC_CPU_DEVICES
diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
index 7b650ab14fa0..f64ebb9c9a41 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -553,8 +553,6 @@ void __init *early_get_page(void);
extern unsigned long ioremap_bot, ioremap_base;
-unsigned long consistent_virt_to_pfn(void *vaddr);
-
void setup_memory(void);
#endif /* __ASSEMBLY__ */
diff --git a/arch/microblaze/kernel/dma.c b/arch/microblaze/kernel/dma.c
index 71032cf64669..a89c2d4ed5ff 100644
--- a/arch/microblaze/kernel/dma.c
+++ b/arch/microblaze/kernel/dma.c
@@ -42,25 +42,3 @@ void arch_sync_dma_for_cpu(struct device *dev, phys_addr_t paddr,
{
__dma_sync(dev, paddr, size, dir);
}
-
-int arch_dma_mmap(struct device *dev, struct vm_area_struct *vma,
- void *cpu_addr, dma_addr_t handle, size_t size,
- unsigned long attrs)
-{
-#ifdef CONFIG_MMU
- unsigned long user_count = vma_pages(vma);
- unsigned long count = PAGE_ALIGN(size) >> PAGE_SHIFT;
- unsigned long off = vma->vm_pgoff;
- unsigned long pfn;
-
- if (off >= count || user_count > (count - off))
- return -ENXIO;
-
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
- pfn = consistent_virt_to_pfn(cpu_addr);
- return remap_pfn_range(vma, vma->vm_start, pfn + off,
- vma->vm_end - vma->vm_start, vma->vm_page_prot);
-#else
- return -ENXIO;
-#endif
-}
diff --git a/arch/microblaze/mm/consistent.c b/arch/microblaze/mm/consistent.c
index c9a278ac795a..d801cc5f5b95 100644
--- a/arch/microblaze/mm/consistent.c
+++ b/arch/microblaze/mm/consistent.c
@@ -165,7 +165,8 @@ static pte_t *consistent_virt_to_pte(void *vaddr)
return pte_offset_kernel(pmd_offset(pgd_offset_k(addr), addr), addr);
}
-unsigned long consistent_virt_to_pfn(void *vaddr)
+long arch_dma_coherent_to_pfn(struct device *dev, void *vaddr,
+ dma_addr_t dma_addr)
{
pte_t *ptep = consistent_virt_to_pte(vaddr);
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 35511999156a..77c022e56e6e 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1106,21 +1106,22 @@ config ARCH_SUPPORTS_UPROBES
bool
config DMA_MAYBE_COHERENT
+ select ARCH_HAS_DMA_COHERENCE_H
select DMA_NONCOHERENT
bool
config DMA_PERDEV_COHERENT
bool
- select DMA_MAYBE_COHERENT
+ select DMA_NONCOHERENT
config DMA_NONCOHERENT
bool
+ select ARCH_HAS_DMA_MMAP_PGPROT
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select ARCH_HAS_SYNC_DMA_FOR_CPU
select NEED_DMA_MAP_STATE
- select DMA_NONCOHERENT_MMAP
+ select ARCH_HAS_DMA_COHERENT_TO_PFN
select DMA_NONCOHERENT_CACHE_SYNC
- select DMA_NONCOHERENT_OPS
config SYS_HAS_EARLY_PRINTK
bool
diff --git a/arch/mips/include/asm/Kbuild b/arch/mips/include/asm/Kbuild
index 58351e48421e..9a81e72119da 100644
--- a/arch/mips/include/asm/Kbuild
+++ b/arch/mips/include/asm/Kbuild
@@ -1,6 +1,7 @@
# MIPS headers
generic-(CONFIG_GENERIC_CSUM) += checksum.h
generic-y += current.h
+generic-y += device.h
generic-y += dma-contiguous.h
generic-y += emergency-restart.h
generic-y += export.h
diff --git a/arch/mips/include/asm/device.h b/arch/mips/include/asm/device.h
deleted file mode 100644
index 6aa796f1081a..000000000000
--- a/arch/mips/include/asm/device.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Arch specific extensions to struct device
- *
- * This file is released under the GPLv2
- */
-#ifndef _ASM_MIPS_DEVICE_H
-#define _ASM_MIPS_DEVICE_H
-
-struct dev_archdata {
-#ifdef CONFIG_DMA_PERDEV_COHERENT
- /* Non-zero if DMA is coherent with CPU caches */
- bool dma_coherent;
-#endif
-};
-
-struct pdev_archdata {
-};
-
-#endif /* _ASM_MIPS_DEVICE_H*/
diff --git a/arch/mips/include/asm/dma-coherence.h b/arch/mips/include/asm/dma-coherence.h
index 8eda48748ed5..5eaa1fcc878a 100644
--- a/arch/mips/include/asm/dma-coherence.h
+++ b/arch/mips/include/asm/dma-coherence.h
@@ -20,6 +20,12 @@ enum coherent_io_user_state {
#elif defined(CONFIG_DMA_MAYBE_COHERENT)
extern enum coherent_io_user_state coherentio;
extern int hw_coherentio;
+
+static inline bool dev_is_dma_coherent(struct device *dev)
+{
+ return coherentio == IO_COHERENCE_ENABLED ||
+ (coherentio == IO_COHERENCE_DEFAULT && hw_coherentio);
+}
#else
#ifdef CONFIG_DMA_NONCOHERENT
#define coherentio IO_COHERENCE_DISABLED
diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h
index e81c4e97ff1a..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
@@ -25,7 +23,7 @@ static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base,
bool coherent)
{
#ifdef CONFIG_DMA_PERDEV_COHERENT
- dev->archdata.dma_coherent = coherent;
+ dev->dma_coherent = coherent;
#endif
}
diff --git a/arch/mips/jazz/jazzdma.c b/arch/mips/jazz/jazzdma.c
index d31bc2f01208..0a0aaf39fd16 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,
@@ -682,7 +682,6 @@ static int jazz_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
const struct dma_map_ops jazz_dma_ops = {
.alloc = jazz_dma_alloc,
.free = jazz_dma_free,
- .mmap = arch_dma_mmap,
.map_page = jazz_dma_map_page,
.unmap_page = jazz_dma_unmap_page,
.map_sg = jazz_dma_map_sg,
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 8aaaa42f91ed..e64b9e8bb002 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -1075,7 +1075,7 @@ static int __init debugfs_mips(void)
arch_initcall(debugfs_mips);
#endif
-#if defined(CONFIG_DMA_MAYBE_COHERENT) && !defined(CONFIG_DMA_PERDEV_COHERENT)
+#ifdef CONFIG_DMA_MAYBE_COHERENT
/* User defined DMA coherency from command line. */
enum coherent_io_user_state coherentio = IO_COHERENCE_DEFAULT;
EXPORT_SYMBOL_GPL(coherentio);
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index a9ef057c79fe..05bd77727fb9 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1955,22 +1955,21 @@ void r4k_cache_init(void)
__flush_icache_user_range = r4k_flush_icache_user_range;
__local_flush_icache_user_range = local_r4k_flush_icache_user_range;
-#if defined(CONFIG_DMA_NONCOHERENT) || defined(CONFIG_DMA_MAYBE_COHERENT)
-# if defined(CONFIG_DMA_PERDEV_COHERENT)
- if (0) {
-# else
- if ((coherentio == IO_COHERENCE_ENABLED) ||
- ((coherentio == IO_COHERENCE_DEFAULT) && hw_coherentio)) {
-# endif
+#ifdef CONFIG_DMA_NONCOHERENT
+#ifdef CONFIG_DMA_MAYBE_COHERENT
+ if (coherentio == IO_COHERENCE_ENABLED ||
+ (coherentio == IO_COHERENCE_DEFAULT && hw_coherentio)) {
_dma_cache_wback_inv = (void *)cache_noop;
_dma_cache_wback = (void *)cache_noop;
_dma_cache_inv = (void *)cache_noop;
- } else {
+ } else
+#endif /* CONFIG_DMA_MAYBE_COHERENT */
+ {
_dma_cache_wback_inv = r4k_dma_cache_wback_inv;
_dma_cache_wback = r4k_dma_cache_wback_inv;
_dma_cache_inv = r4k_dma_cache_inv;
}
-#endif
+#endif /* CONFIG_DMA_NONCOHERENT */
build_clear_page();
build_copy_page();
diff --git a/arch/mips/mm/dma-noncoherent.c b/arch/mips/mm/dma-noncoherent.c
index 2aca1236af36..e6c9485cadcf 100644
--- a/arch/mips/mm/dma-noncoherent.c
+++ b/arch/mips/mm/dma-noncoherent.c
@@ -14,26 +14,6 @@
#include <asm/dma-coherence.h>
#include <asm/io.h>
-#ifdef CONFIG_DMA_PERDEV_COHERENT
-static inline int dev_is_coherent(struct device *dev)
-{
- return dev->archdata.dma_coherent;
-}
-#else
-static inline int dev_is_coherent(struct device *dev)
-{
- switch (coherentio) {
- default:
- case IO_COHERENCE_DEFAULT:
- return hw_coherentio;
- case IO_COHERENCE_ENABLED:
- return 1;
- case IO_COHERENCE_DISABLED:
- return 0;
- }
-}
-#endif /* CONFIG_DMA_PERDEV_COHERENT */
-
/*
* The affected CPUs below in 'cpu_needs_post_dma_flush()' can speculatively
* fill random cachelines with stale data at any time, requiring an extra
@@ -49,9 +29,6 @@ static inline int dev_is_coherent(struct device *dev)
*/
static inline bool cpu_needs_post_dma_flush(struct device *dev)
{
- if (dev_is_coherent(dev))
- return false;
-
switch (boot_cpu_type()) {
case CPU_R10000:
case CPU_R12000:
@@ -72,11 +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_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);
}
@@ -87,43 +61,24 @@ 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_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,
- void *cpu_addr, dma_addr_t dma_addr, size_t size,
- unsigned long attrs)
+long arch_dma_coherent_to_pfn(struct device *dev, void *cpu_addr,
+ dma_addr_t dma_addr)
{
- unsigned long user_count = vma_pages(vma);
- unsigned long count = PAGE_ALIGN(size) >> PAGE_SHIFT;
- unsigned long addr = (unsigned long)cpu_addr;
- unsigned long off = vma->vm_pgoff;
- unsigned long pfn;
- int ret = -ENXIO;
-
- if (!dev_is_coherent(dev))
- addr = CAC_ADDR(addr);
-
- pfn = page_to_pfn(virt_to_page((void *)addr));
+ unsigned long addr = CAC_ADDR((unsigned long)cpu_addr);
+ return page_to_pfn(virt_to_page((void *)addr));
+}
+pgprot_t arch_dma_mmap_pgprot(struct device *dev, pgprot_t prot,
+ unsigned long attrs)
+{
if (attrs & DMA_ATTR_WRITE_COMBINE)
- vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
- else
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-
- if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret))
- return ret;
-
- if (off < count && user_count <= (count - off)) {
- ret = remap_pfn_range(vma, vma->vm_start,
- pfn + off,
- user_count << PAGE_SHIFT,
- vma->vm_page_prot);
- }
-
- return ret;
+ return pgprot_writecombine(prot);
+ return pgprot_noncached(prot);
}
static inline void dma_sync_virt(void *addr, size_t size,
@@ -187,8 +142,7 @@ 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_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,
@@ -203,6 +157,5 @@ void arch_dma_cache_sync(struct device *dev, void *vaddr, size_t size,
{
BUG_ON(direction == DMA_NONE);
- if (!dev_is_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/unicore32/Kconfig b/arch/unicore32/Kconfig
index 60eae744d8fd..3a3b40f79558 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -4,6 +4,7 @@ config UNICORE32
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
+ select DMA_DIRECT_OPS
select HAVE_MEMBLOCK
select HAVE_GENERIC_DMA_COHERENT
select HAVE_KERNEL_GZIP
@@ -20,7 +21,6 @@ config UNICORE32
select GENERIC_IOMAP
select MODULES_USE_ELF_REL
select NEED_DMA_MAP_STATE
- select SWIOTLB
help
UniCore-32 is 32-bit Instruction Set Architecture,
including a series of low-power-consumption RISC chip
diff --git a/arch/unicore32/include/asm/Kbuild b/arch/unicore32/include/asm/Kbuild
index bfc7abe77905..1372553dc0a9 100644
--- a/arch/unicore32/include/asm/Kbuild
+++ b/arch/unicore32/include/asm/Kbuild
@@ -4,6 +4,7 @@ generic-y += compat.h
generic-y += current.h
generic-y += device.h
generic-y += div64.h
+generic-y += dma-mapping.h
generic-y += emergency-restart.h
generic-y += exec.h
generic-y += extable.h
diff --git a/arch/unicore32/include/asm/dma-mapping.h b/arch/unicore32/include/asm/dma-mapping.h
deleted file mode 100644
index 790bc2ef4af2..000000000000
--- a/arch/unicore32/include/asm/dma-mapping.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * linux/arch/unicore32/include/asm/dma-mapping.h
- *
- * Code specific to PKUnity SoC and UniCore ISA
- *
- * Copyright (C) 2001-2010 GUAN Xue-tao
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#ifndef __UNICORE_DMA_MAPPING_H__
-#define __UNICORE_DMA_MAPPING_H__
-
-#include <linux/swiotlb.h>
-
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
-{
- return &swiotlb_dma_ops;
-}
-
-#endif
diff --git a/arch/unicore32/mm/init.c b/arch/unicore32/mm/init.c
index f4950fbfe574..5f72a8d1d953 100644
--- a/arch/unicore32/mm/init.c
+++ b/arch/unicore32/mm/init.c
@@ -234,9 +234,6 @@ void __init bootmem_init(void)
uc32_bootmem_init(min, max_low);
-#ifdef CONFIG_SWIOTLB
- swiotlb_init(1);
-#endif
/*
* Sparsemem tries to allocate bootmem in memory_present(),
* so must be done after the fixed reservations
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 b9ad83a0ee5d..ea5d8d03e53b 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -13,7 +13,7 @@ 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