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Merge tag 'dma-mapping-5.10' of git://git.infradead.org/users/hch/dma-mapping

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Pull dma-mapping updates from Christoph Hellwig:

 - rework the non-coherent DMA allocator

 - move private definitions out of <linux/dma-mapping.h>

 - lower CMA_ALIGNMENT (Paul Cercueil)

 - remove the omap1 dma address translation in favor of the common code

 - make dma-direct aware of multiple dma offset ranges (Jim Quinlan)

 - support per-node DMA CMA areas (Barry Song)

 - increase the default seg boundary limit (Nicolin Chen)

 - misc fixes (Robin Murphy, Thomas Tai, Xu Wang)

 - various cleanups

* tag 'dma-mapping-5.10' of git://git.infradead.org/users/hch/dma-mapping: (63 commits)
  ARM/ixp4xx: add a missing include of dma-map-ops.h
  dma-direct: simplify the DMA_ATTR_NO_KERNEL_MAPPING handling
  dma-direct: factor out a dma_direct_alloc_from_pool helper
  dma-direct check for highmem pages in dma_direct_alloc_pages
  dma-mapping: merge <linux/dma-noncoherent.h> into <linux/dma-map-ops.h>
  dma-mapping: move large parts of <linux/dma-direct.h> to kernel/dma
  dma-mapping: move dma-debug.h to kernel/dma/
  dma-mapping: remove <asm/dma-contiguous.h>
  dma-mapping: merge <linux/dma-contiguous.h> into <linux/dma-map-ops.h>
  dma-contiguous: remove dma_contiguous_set_default
  dma-contiguous: remove dev_set_cma_area
  dma-contiguous: remove dma_declare_contiguous
  dma-mapping: split <linux/dma-mapping.h>
  cma: decrease CMA_ALIGNMENT lower limit to 2
  firewire-ohci: use dma_alloc_pages
  dma-iommu: implement ->alloc_noncoherent
  dma-mapping: add new {alloc,free}_noncoherent dma_map_ops methods
  dma-mapping: add a new dma_alloc_pages API
  dma-mapping: remove dma_cache_sync
  53c700: convert to dma_alloc_noncoherent
  ...
This commit is contained in:
Linus Torvalds
2020-10-15 14:43:29 -07:00
parent f065199d4d 2a410d0941
commit 5a32c3413d
170 changed files with 1926 additions and 1704 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
arch/arm/include/asm/dma-contiguous.h
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@@ -1,15 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef ASMARM_DMA_CONTIGUOUS_H
#define ASMARM_DMA_CONTIGUOUS_H
#ifdef __KERNEL__
#ifdef CONFIG_DMA_CMA
#include <linux/types.h>
void dma_contiguous_early_fixup(phys_addr_t base, unsigned long size);
#endif
#endif
#endif

35
arch/arm/include/asm/dma-direct.h
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@@ -2,13 +2,44 @@
#ifndef ASM_ARM_DMA_DIRECT_H
#define ASM_ARM_DMA_DIRECT_H 1
static inline dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr)
#include <asm/memory.h>
/*
* dma_to_pfn/pfn_to_dma/virt_to_dma are architecture private
* functions used internally by the DMA-mapping API to provide DMA
* addresses. They must not be used by drivers.
*/
static inline dma_addr_t pfn_to_dma(struct device *dev, unsigned long pfn)
{
if (dev && dev->dma_range_map)
pfn = PFN_DOWN(translate_phys_to_dma(dev, PFN_PHYS(pfn)));
return (dma_addr_t)__pfn_to_bus(pfn);
}
static inline unsigned long dma_to_pfn(struct device *dev, dma_addr_t addr)
{
unsigned long pfn = __bus_to_pfn(addr);
if (dev && dev->dma_range_map)
pfn = PFN_DOWN(translate_dma_to_phys(dev, PFN_PHYS(pfn)));
return pfn;
}
static inline dma_addr_t virt_to_dma(struct device *dev, void *addr)
{
if (dev)
return pfn_to_dma(dev, virt_to_pfn(addr));
return (dma_addr_t)__virt_to_bus((unsigned long)(addr));
}
static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
{
unsigned int offset = paddr & ~PAGE_MASK;
return pfn_to_dma(dev, __phys_to_pfn(paddr)) + offset;
}
static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dev_addr)
static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr)
{
unsigned int offset = dev_addr & ~PAGE_MASK;
return __pfn_to_phys(dma_to_pfn(dev, dev_addr)) + offset;

1
arch/arm/include/asm/dma-iommu.h
View File

@@ -6,7 +6,6 @@
#include <linux/mm_types.h>
#include <linux/scatterlist.h>
#include <linux/dma-debug.h>
#include <linux/kref.h>
struct dma_iommu_mapping {

71
arch/arm/include/asm/dma-mapping.h
View File

@@ -6,9 +6,6 @@
#include <linux/mm_types.h>
#include <linux/scatterlist.h>
#include <linux/dma-debug.h>
#include <asm/memory.h>
#include <xen/xen.h>
#include <asm/xen/hypervisor.h>
@@ -23,74 +20,6 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
return NULL;
}
#ifdef __arch_page_to_dma
#error Please update to __arch_pfn_to_dma
#endif
/*
* dma_to_pfn/pfn_to_dma/dma_to_virt/virt_to_dma are architecture private
* functions used internally by the DMA-mapping API to provide DMA
* addresses. They must not be used by drivers.
*/
#ifndef __arch_pfn_to_dma
static inline dma_addr_t pfn_to_dma(struct device *dev, unsigned long pfn)
{
if (dev)
pfn -= dev->dma_pfn_offset;
return (dma_addr_t)__pfn_to_bus(pfn);
}
static inline unsigned long dma_to_pfn(struct device *dev, dma_addr_t addr)
{
unsigned long pfn = __bus_to_pfn(addr);
if (dev)
pfn += dev->dma_pfn_offset;
return pfn;
}
static inline void *dma_to_virt(struct device *dev, dma_addr_t addr)
{
if (dev) {
unsigned long pfn = dma_to_pfn(dev, addr);
return phys_to_virt(__pfn_to_phys(pfn));
}
return (void *)__bus_to_virt((unsigned long)addr);
}
static inline dma_addr_t virt_to_dma(struct device *dev, void *addr)
{
if (dev)
return pfn_to_dma(dev, virt_to_pfn(addr));
return (dma_addr_t)__virt_to_bus((unsigned long)(addr));
}
#else
static inline dma_addr_t pfn_to_dma(struct device *dev, unsigned long pfn)
{
return __arch_pfn_to_dma(dev, pfn);
}
static inline unsigned long dma_to_pfn(struct device *dev, dma_addr_t addr)
{
return __arch_dma_to_pfn(dev, addr);
}
static inline void *dma_to_virt(struct device *dev, dma_addr_t addr)
{
return __arch_dma_to_virt(dev, addr);
}
static inline dma_addr_t virt_to_dma(struct device *dev, void *addr)
{
return __arch_virt_to_dma(dev, addr);
}
#endif
/**
* arm_dma_alloc - allocate consistent memory for DMA
* @dev: valid struct device pointer, or NULL for ISA and EISA-like devices