static dma_addr_t ps3_ioc0_map_single(struct device *_dev, void *ptr,
size_t size,
enum dma_data_direction direction)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
int result;
unsigned long bus_addr;
u64 iopte_flag;
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_system_bus_match(struct device *_dev,
struct device_driver *_drv)
{
int result;
struct ps3_system_bus_driver *drv = ps3_drv_to_system_bus_drv(_drv);
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
if (!dev->match_sub_id)
result = dev->match_id == drv->match_id;
else
result = dev->match_sub_id == drv->match_sub_id &&
dev->match_id == drv->match_id;
if (result)
pr_info("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): match\n",
__func__, __LINE__,
dev->match_id, dev->match_sub_id, dev_name(&dev->core),
drv->match_id, drv->match_sub_id, drv->core.name);
else
pr_debug("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): miss\n",
__func__, __LINE__,
dev->match_id, dev->match_sub_id, dev_name(&dev->core),
drv->match_id, drv->match_sub_id, drv->core.name);
return result;
}
static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr,
dma_addr_t dma_handle)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
ps3_dma_unmap(dev->d_region, dma_handle, size);
free_pages((unsigned long)vaddr, get_order(size));
}
static ssize_t modalias_show(struct device *_dev, struct device_attribute *a,
char *buf)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
int len = snprintf(buf, PAGE_SIZE, "ps3:%d\n", dev->match_id);
return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
}
static int ps3_system_bus_uevent(struct device *_dev, struct kobj_uevent_env *env)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
if (add_uevent_var(env, "MODALIAS=ps3:%d", dev->match_id))
return -ENOMEM;
return 0;
}
static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr,
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;
result = ps3_dma_unmap(dev->d_region, dma_addr, size);
if (result) {
pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n",
__func__, __LINE__, result);
}
}
static int ps3_system_bus_match(struct device *_dev,
struct device_driver *_drv)
{
int result;
struct ps3_system_bus_driver *drv = ps3_drv_to_system_bus_drv(_drv);
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
result = dev->match_id == drv->match_id;
pr_info("%s:%d: dev=%u(%s), drv=%u(%s): %s\n", __func__, __LINE__,
dev->match_id, dev->core.bus_id, drv->match_id, drv->core.name,
(result ? "match" : "miss"));
return result;
}
static int ps3_system_bus_uevent(struct device *_dev, char **envp,
int num_envp, char *buffer, int buffer_size)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
int i = 0, length = 0;
if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size,
&length, "MODALIAS=ps3:%d",
dev->match_id))
return -ENOMEM;
envp[i] = NULL;
return 0;
}
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 int ps3_system_bus_remove(struct device *_dev)
{
int result = 0;
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
struct ps3_system_bus_driver *drv;
BUG_ON(!dev);
pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, _dev->bus_id);
drv = ps3_system_bus_dev_to_system_bus_drv(dev);
BUG_ON(!drv);
if (drv->remove)
result = drv->remove(dev);
else
dev_dbg(&dev->core, "%s:%d %s: no remove method\n",
__func__, __LINE__, drv->core.name);
pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev_name(&dev->core));
return result;
}
static int ps3_system_bus_probe(struct device *_dev)
{
int result = 0;
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
struct ps3_system_bus_driver *drv;
BUG_ON(!dev);
pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, _dev->bus_id);
drv = ps3_system_bus_dev_to_system_bus_drv(dev);
BUG_ON(!drv);
if (drv->probe)
result = drv->probe(dev);
else
pr_debug("%s:%d: %s no probe method\n", __func__, __LINE__,
dev->core.bus_id);
pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev->core.bus_id);
return result;
}
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;
}
static void ps3_system_bus_shutdown(struct device *_dev)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
struct ps3_system_bus_driver *drv;
BUG_ON(!dev);
dev_dbg(&dev->core, " -> %s:%d: match_id %d\n", __func__, __LINE__,
dev->match_id);
if (!dev->core.driver) {
dev_dbg(&dev->core, "%s:%d: no driver bound\n", __func__,
__LINE__);
return;
}
drv = ps3_system_bus_dev_to_system_bus_drv(dev);
BUG_ON(!drv);
dev_dbg(&dev->core, "%s:%d: %s -> %s\n", __func__, __LINE__,
dev_name(&dev->core), drv->core.name);
if (drv->shutdown)
drv->shutdown(dev);
else if (drv->remove) {
dev_dbg(&dev->core, "%s:%d %s: no shutdown, calling remove\n",
__func__, __LINE__, drv->core.name);
drv->remove(dev);
} else {
dev_dbg(&dev->core, "%s:%d %s: no shutdown method\n",
__func__, __LINE__, drv->core.name);
BUG();
}
dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__);
}
static void ps3_system_bus_release_device(struct device *_dev)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
kfree(dev);
}
