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MIPS: Adjust the dma-common.c platform hooks.

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We add a dev parameter to plat_unmap_dma_mem(), and hooks for
plat_dma_supported() and plat_extra_sync_for_device() which should be
nop changes for all existing targets.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Daney 2008-12-11 15:33:36 -08:00 committed by Ralf Baechle
parent ec454d8c4f
commit 843aef4930
6 changed files with 135 additions and 20 deletions
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26
arch/mips/include/asm/mach-generic/dma-coherence.h
View File

@ -28,10 +28,34 @@ static inline unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
return dma_addr;
}
static inline void plat_unmap_dma_mem(dma_addr_t dma_addr)
static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr)
{
}
static inline int plat_dma_supported(struct device *dev, u64 mask)
{
/*
* we fall back to GFP_DMA when the mask isn't all 1s,
* so we can't guarantee allocations that must be
* within a tighter range than GFP_DMA..
*/
if (mask < DMA_BIT_MASK(24))
return 0;
return 1;
}
static inline void plat_extra_sync_for_device(struct device *dev)
{
return;
}
static inline int plat_dma_mapping_error(struct device *dev,
dma_addr_t dma_addr)
{
return 0;
}
static inline int plat_device_is_coherent(struct device *dev)
{
#ifdef CONFIG_DMA_COHERENT

26
arch/mips/include/asm/mach-ip27/dma-coherence.h
View File

@ -38,10 +38,34 @@ static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
return dma_addr & ~(0xffUL << 56);
}
static inline void plat_unmap_dma_mem(dma_addr_t dma_addr)
static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr)
{
}
static inline int plat_dma_supported(struct device *dev, u64 mask)
{
/*
* we fall back to GFP_DMA when the mask isn't all 1s,
* so we can't guarantee allocations that must be
* within a tighter range than GFP_DMA..
*/
if (mask < DMA_BIT_MASK(24))
return 0;
return 1;
}
static inline void plat_extra_sync_for_device(struct device *dev)
{
return;
}
static inline int plat_dma_mapping_error(struct device *dev,
dma_addr_t dma_addr)
{
return 0;
}
static inline int plat_device_is_coherent(struct device *dev)
{
return 1; /* IP27 non-cohernet mode is unsupported */

26
arch/mips/include/asm/mach-ip32/dma-coherence.h
View File

@ -60,10 +60,34 @@ static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
return addr;
}
static inline void plat_unmap_dma_mem(dma_addr_t dma_addr)
static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr)
{
}
static inline int plat_dma_supported(struct device *dev, u64 mask)
{
/*
* we fall back to GFP_DMA when the mask isn't all 1s,
* so we can't guarantee allocations that must be
* within a tighter range than GFP_DMA..
*/
if (mask < DMA_BIT_MASK(24))
return 0;
return 1;
}
static inline void plat_extra_sync_for_device(struct device *dev)
{
return;
}
static inline int plat_dma_mapping_error(struct device *dev,
dma_addr_t dma_addr)
{
return 0;
}
static inline int plat_device_is_coherent(struct device *dev)
{
return 0; /* IP32 is non-cohernet */

26
arch/mips/include/asm/mach-jazz/dma-coherence.h
View File

@ -27,11 +27,35 @@ static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
return vdma_log2phys(dma_addr);
}
static void plat_unmap_dma_mem(dma_addr_t dma_addr)
static void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr)
{
vdma_free(dma_addr);
}
static inline int plat_dma_supported(struct device *dev, u64 mask)
{
/*
* we fall back to GFP_DMA when the mask isn't all 1s,
* so we can't guarantee allocations that must be
* within a tighter range than GFP_DMA..
*/
if (mask < DMA_BIT_MASK(24))
return 0;
return 1;
}
static inline void plat_extra_sync_for_device(struct device *dev)
{
return;
}
static inline int plat_dma_mapping_error(struct device *dev,
dma_addr_t dma_addr)
{
return 0;
}
static inline int plat_device_is_coherent(struct device *dev)
{
return 0;

26
arch/mips/include/asm/mach-lemote/dma-coherence.h
View File

@ -30,10 +30,34 @@ static inline unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
return dma_addr & 0x7fffffff;
}
static inline void plat_unmap_dma_mem(dma_addr_t dma_addr)
static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr)
{
}
static inline int plat_dma_supported(struct device *dev, u64 mask)
{
/*
* we fall back to GFP_DMA when the mask isn't all 1s,
* so we can't guarantee allocations that must be
* within a tighter range than GFP_DMA..
*/
if (mask < DMA_BIT_MASK(24))
return 0;
return 1;
}
static inline void plat_extra_sync_for_device(struct device *dev)
{
return;
}
static inline int plat_dma_mapping_error(struct device *dev,
dma_addr_t dma_addr)
{
return 0;
}
static inline int plat_device_is_coherent(struct device *dev)
{
return 0;

25
arch/mips/mm/dma-default.c
View File

@ -111,7 +111,7 @@ EXPORT_SYMBOL(dma_alloc_coherent);
void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
dma_addr_t dma_handle)
{
plat_unmap_dma_mem(dma_handle);
plat_unmap_dma_mem(dev, dma_handle);
free_pages((unsigned long) vaddr, get_order(size));
}
@ -122,7 +122,7 @@ void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
{
unsigned long addr = (unsigned long) vaddr;
plat_unmap_dma_mem(dma_handle);
plat_unmap_dma_mem(dev, dma_handle);
if (!plat_device_is_coherent(dev))
addr = CAC_ADDR(addr);
@ -173,7 +173,7 @@ void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
__dma_sync(dma_addr_to_virt(dma_addr), size,
direction);
plat_unmap_dma_mem(dma_addr);
plat_unmap_dma_mem(dev, dma_addr);
}
EXPORT_SYMBOL(dma_unmap_single);
@ -229,7 +229,7 @@ void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
dma_cache_wback_inv(addr, size);
}
plat_unmap_dma_mem(dma_address);
plat_unmap_dma_mem(dev, dma_address);
}
EXPORT_SYMBOL(dma_unmap_page);
@ -249,7 +249,7 @@ void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
if (addr)
__dma_sync(addr, sg->length, direction);
}
plat_unmap_dma_mem(sg->dma_address);
plat_unmap_dma_mem(dev, sg->dma_address);
}
}
@ -275,6 +275,7 @@ void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
{
BUG_ON(direction == DMA_NONE);
plat_extra_sync_for_device(dev);
if (!plat_device_is_coherent(dev)) {
unsigned long addr;
@ -305,6 +306,7 @@ void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
{
BUG_ON(direction == DMA_NONE);
plat_extra_sync_for_device(dev);
if (!plat_device_is_coherent(dev)) {
unsigned long addr;
@ -351,22 +353,14 @@ EXPORT_SYMBOL(dma_sync_sg_for_device);
int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return 0;
return plat_dma_mapping_error(dev, dma_addr);
}
EXPORT_SYMBOL(dma_mapping_error);
int dma_supported(struct device *dev, u64 mask)
{
/*
* we fall back to GFP_DMA when the mask isn't all 1s,
* so we can't guarantee allocations that must be
* within a tighter range than GFP_DMA..
*/
if (mask < DMA_BIT_MASK(24))
return 0;
return 1;
return plat_dma_supported(dev, mask);
}
EXPORT_SYMBOL(dma_supported);
@ -383,6 +377,7 @@ void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
{
BUG_ON(direction == DMA_NONE);
plat_extra_sync_for_device(dev);
if (!plat_device_is_coherent(dev))
__dma_sync((unsigned long)vaddr, size, direction);
}