static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction direction,
struct dma_attrs *attrs)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
int result;
dma_addr_t bus_addr;
u64 iopte_flag;
void *ptr = page_address(page) + offset;
iopte_flag = IOPTE_M;
switch (direction) {
case DMA_BIDIRECTIONAL:
iopte_flag |= IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW;
break;
case DMA_TO_DEVICE:
iopte_flag |= IOPTE_PP_R | IOPTE_SO_R;
break;
case DMA_FROM_DEVICE:
iopte_flag |= IOPTE_PP_W | IOPTE_SO_RW;
break;
default:
/* not happned */
BUG();
};
result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
&bus_addr, iopte_flag);
if (result) {
pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
__func__, __LINE__, result);
}
return bus_addr;
}
/* Allocates a contiguous real buffer and creates mappings over it.
* Returns the virtual address of the buffer and sets dma_handle
* to the dma address (mapping) of the first page.
*/
static void * ps3_alloc_coherent(struct device *_dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
int result;
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
unsigned long virt_addr;
flag &= ~(__GFP_DMA | __GFP_HIGHMEM);
flag |= __GFP_ZERO;
virt_addr = __get_free_pages(flag, get_order(size));
if (!virt_addr) {
pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__);
goto clean_none;
}
result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle,
IOPTE_PP_W | IOPTE_PP_R | IOPTE_SO_RW | IOPTE_M);
if (result) {
pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
__func__, __LINE__, result);
BUG_ON("check region type");
goto clean_alloc;
}
return (void*)virt_addr;
clean_alloc:
free_pages(virt_addr, get_order(size));
clean_none:
dma_handle = NULL;
return NULL;
}
static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sg, int nents,
enum dma_data_direction direction)
{
#if defined(CONFIG_PS3_DYNAMIC_DMA)
BUG_ON("do");
return -EPERM;
#else
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
int i;
for (i = 0; i < nents; i++, sg++) {
int result = ps3_dma_map(dev->d_region,
page_to_phys(sg->page) + sg->offset, sg->length,
&sg->dma_address, 0);
if (result) {
pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
__func__, __LINE__, result);
return -EINVAL;
}
sg->dma_length = sg->length;
}
return nents;
#endif
}
static dma_addr_t ps3_sb_map_single(struct device *_dev, void *ptr, size_t size,
enum dma_data_direction direction, struct dma_attrs *attrs)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
int result;
unsigned long bus_addr;
result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
&bus_addr,
IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW | IOPTE_M);
if (result) {
pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
__func__, __LINE__, result);
}
return bus_addr;
}
static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page,
unsigned long offset, size_t size, enum dma_data_direction direction,
struct dma_attrs *attrs)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
int result;
dma_addr_t bus_addr;
void *ptr = page_address(page) + offset;
result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
&bus_addr,
CBE_IOPTE_PP_R | CBE_IOPTE_PP_W |
CBE_IOPTE_SO_RW | CBE_IOPTE_M);
if (result) {
pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
__func__, __LINE__, result);
}
return bus_addr;
}
static int ps3_sb_map_sg(struct device *_dev, struct scatterlist *sgl,
int nents, enum dma_data_direction direction, struct dma_attrs *attrs)
{
#if defined(CONFIG_PS3_DYNAMIC_DMA)
BUG_ON("do");
return -EPERM;
#else
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
struct scatterlist *sg;
int i;
for_each_sg(sgl, sg, nents, i) {
int result = ps3_dma_map(dev->d_region, sg_phys(sg),
sg->length, &sg->dma_address, 0);
if (result) {
pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
__func__, __LINE__, result);
return -EINVAL;
}
sg->dma_length = sg->length;
}
