00e9028a95
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (28 commits) mm/hugetlb.c must #include <asm/io.h> video: Fix up hp6xx driver build regressions. sh: defconfig updates. sh: Kill off stray mach-rsk7203 reference. serial: sh-sci: Fix up SH7760/SH7780/SH7785 early printk regression. sh: Move out individual boards without mach groups. sh: Make sure AT_SYSINFO_EHDR is exposed to userspace in asm/auxvec.h. sh: Allow SH-3 and SH-5 to use common headers. sh: Provide common CPU headers, prune the SH-2 and SH-2A directories. sh/maple: clean maple bus code sh: More header path fixups for mach dir refactoring. sh: Move out the solution engine headers to arch/sh/include/mach-se/ sh: I2C fix for AP325RXA and Migo-R sh: Shuffle the board directories in to mach groups. sh: dma-sh: Fix up dreamcast dma.h mach path. sh: Switch KBUILD_DEFCONFIG to shx3_defconfig. sh: Add ARCH_DEFCONFIG entries for sh and sh64. sh: Fix compile error of Solution Engine sh: Proper __put_user_asm() size mismatch fix. sh: Stub in a dummy ENTRY_OFFSET for uImage offset calculation. ...
194 lines
5.1 KiB
C
194 lines
5.1 KiB
C
#ifndef __ASM_SH_DMA_MAPPING_H
|
|
#define __ASM_SH_DMA_MAPPING_H
|
|
|
|
#include <linux/mm.h>
|
|
#include <linux/scatterlist.h>
|
|
#include <asm/cacheflush.h>
|
|
#include <asm/io.h>
|
|
#include <asm-generic/dma-coherent.h>
|
|
|
|
extern struct bus_type pci_bus_type;
|
|
|
|
#define dma_supported(dev, mask) (1)
|
|
|
|
static inline int dma_set_mask(struct device *dev, u64 mask)
|
|
{
|
|
if (!dev->dma_mask || !dma_supported(dev, mask))
|
|
return -EIO;
|
|
|
|
*dev->dma_mask = mask;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void *dma_alloc_coherent(struct device *dev, size_t size,
|
|
dma_addr_t *dma_handle, gfp_t flag);
|
|
|
|
void dma_free_coherent(struct device *dev, size_t size,
|
|
void *vaddr, dma_addr_t dma_handle);
|
|
|
|
void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
|
|
enum dma_data_direction dir);
|
|
|
|
#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)
|
|
#define dma_is_consistent(d, h) (1)
|
|
|
|
static inline dma_addr_t dma_map_single(struct device *dev,
|
|
void *ptr, size_t size,
|
|
enum dma_data_direction dir)
|
|
{
|
|
#if defined(CONFIG_PCI) && !defined(CONFIG_SH_PCIDMA_NONCOHERENT)
|
|
if (dev->bus == &pci_bus_type)
|
|
return virt_to_phys(ptr);
|
|
#endif
|
|
dma_cache_sync(dev, ptr, size, dir);
|
|
|
|
return virt_to_phys(ptr);
|
|
}
|
|
|
|
#define dma_unmap_single(dev, addr, size, dir) do { } while (0)
|
|
|
|
static inline int dma_map_sg(struct device *dev, struct scatterlist *sg,
|
|
int nents, enum dma_data_direction dir)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < nents; i++) {
|
|
#if !defined(CONFIG_PCI) || defined(CONFIG_SH_PCIDMA_NONCOHERENT)
|
|
dma_cache_sync(dev, sg_virt(&sg[i]), sg[i].length, dir);
|
|
#endif
|
|
sg[i].dma_address = sg_phys(&sg[i]);
|
|
}
|
|
|
|
return nents;
|
|
}
|
|
|
|
#define dma_unmap_sg(dev, sg, nents, dir) do { } while (0)
|
|
|
|
static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
|
|
unsigned long offset, size_t size,
|
|
enum dma_data_direction dir)
|
|
{
|
|
return dma_map_single(dev, page_address(page) + offset, size, dir);
|
|
}
|
|
|
|
static inline void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
|
|
size_t size, enum dma_data_direction dir)
|
|
{
|
|
dma_unmap_single(dev, dma_address, size, dir);
|
|
}
|
|
|
|
static inline void dma_sync_single(struct device *dev, dma_addr_t dma_handle,
|
|
size_t size, enum dma_data_direction dir)
|
|
{
|
|
#if defined(CONFIG_PCI) && !defined(CONFIG_SH_PCIDMA_NONCOHERENT)
|
|
if (dev->bus == &pci_bus_type)
|
|
return;
|
|
#endif
|
|
dma_cache_sync(dev, phys_to_virt(dma_handle), size, dir);
|
|
}
|
|
|
|
static inline void dma_sync_single_range(struct device *dev,
|
|
dma_addr_t dma_handle,
|
|
unsigned long offset, size_t size,
|
|
enum dma_data_direction dir)
|
|
{
|
|
#if defined(CONFIG_PCI) && !defined(CONFIG_SH_PCIDMA_NONCOHERENT)
|
|
if (dev->bus == &pci_bus_type)
|
|
return;
|
|
#endif
|
|
dma_cache_sync(dev, phys_to_virt(dma_handle) + offset, size, dir);
|
|
}
|
|
|
|
static inline void dma_sync_sg(struct device *dev, struct scatterlist *sg,
|
|
int nelems, enum dma_data_direction dir)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < nelems; i++) {
|
|
#if !defined(CONFIG_PCI) || defined(CONFIG_SH_PCIDMA_NONCOHERENT)
|
|
dma_cache_sync(dev, sg_virt(&sg[i]), sg[i].length, dir);
|
|
#endif
|
|
sg[i].dma_address = sg_phys(&sg[i]);
|
|
}
|
|
}
|
|
|
|
static inline void dma_sync_single_for_cpu(struct device *dev,
|
|
dma_addr_t dma_handle, size_t size,
|
|
enum dma_data_direction dir)
|
|
{
|
|
dma_sync_single(dev, dma_handle, size, dir);
|
|
}
|
|
|
|
static inline void dma_sync_single_for_device(struct device *dev,
|
|
dma_addr_t dma_handle,
|
|
size_t size,
|
|
enum dma_data_direction dir)
|
|
{
|
|
dma_sync_single(dev, dma_handle, size, dir);
|
|
}
|
|
|
|
static inline 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)
|
|
{
|
|
dma_sync_single_for_cpu(dev, dma_handle+offset, size, direction);
|
|
}
|
|
|
|
static inline void dma_sync_single_range_for_device(struct device *dev,
|
|
dma_addr_t dma_handle,
|
|
unsigned long offset,
|
|
size_t size,
|
|
enum dma_data_direction direction)
|
|
{
|
|
dma_sync_single_for_device(dev, dma_handle+offset, size, direction);
|
|
}
|
|
|
|
|
|
static inline void dma_sync_sg_for_cpu(struct device *dev,
|
|
struct scatterlist *sg, int nelems,
|
|
enum dma_data_direction dir)
|
|
{
|
|
dma_sync_sg(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)
|
|
{
|
|
dma_sync_sg(dev, sg, nelems, dir);
|
|
}
|
|
|
|
|
|
static inline int dma_get_cache_alignment(void)
|
|
{
|
|
/*
|
|
* Each processor family will define its own L1_CACHE_SHIFT,
|
|
* L1_CACHE_BYTES wraps to this, so this is always safe.
|
|
*/
|
|
return L1_CACHE_BYTES;
|
|
}
|
|
|
|
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
|
|
{
|
|
return dma_addr == 0;
|
|
}
|
|
|
|
#define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
|
|
|
|
extern int
|
|
dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
|
|
dma_addr_t device_addr, size_t size, int flags);
|
|
|
|
extern void
|
|
dma_release_declared_memory(struct device *dev);
|
|
|
|
extern void *
|
|
dma_mark_declared_memory_occupied(struct device *dev,
|
|
dma_addr_t device_addr, size_t size);
|
|
|
|
#endif /* __ASM_SH_DMA_MAPPING_H */
|