summaryrefslogtreecommitdiff
path: root/arch/powerpc/platforms/ps3/system-bus.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/platforms/ps3/system-bus.c')
-rw-r--r--arch/powerpc/platforms/ps3/system-bus.c75
1 files changed, 41 insertions, 34 deletions
diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c
index 3542b7bd6a46..0537a678a32f 100644
--- a/arch/powerpc/platforms/ps3/system-bus.c
+++ b/arch/powerpc/platforms/ps3/system-bus.c
@@ -9,7 +9,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/export.h>
-#include <linux/dma-mapping.h>
+#include <linux/dma-map-ops.h>
#include <linux/err.h>
#include <linux/slab.h>
@@ -64,9 +64,10 @@ static int ps3_open_hv_device_sb(struct ps3_system_bus_device *dev)
result = lv1_open_device(dev->bus_id, dev->dev_id, 0);
if (result) {
- pr_debug("%s:%d: lv1_open_device failed: %s\n", __func__,
- __LINE__, ps3_result(result));
- result = -EPERM;
+ pr_warn("%s:%d: lv1_open_device dev=%u.%u(%s) failed: %s\n",
+ __func__, __LINE__, dev->match_id, dev->match_sub_id,
+ dev_name(&dev->core), ps3_result(result));
+ result = -EPERM;
}
done:
@@ -120,7 +121,7 @@ static int ps3_open_hv_device_gpu(struct ps3_system_bus_device *dev)
result = lv1_gpu_open(0);
if (result) {
- pr_debug("%s:%d: lv1_gpu_open failed: %s\n", __func__,
+ pr_warn("%s:%d: lv1_gpu_open failed: %s\n", __func__,
__LINE__, ps3_result(result));
result = -EPERM;
}
@@ -332,10 +333,10 @@ int ps3_mmio_region_init(struct ps3_system_bus_device *dev,
EXPORT_SYMBOL_GPL(ps3_mmio_region_init);
static int ps3_system_bus_match(struct device *_dev,
- struct device_driver *_drv)
+ const struct device_driver *_drv)
{
int result;
- struct ps3_system_bus_driver *drv = ps3_drv_to_system_bus_drv(_drv);
+ const 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)
@@ -380,9 +381,8 @@ static int ps3_system_bus_probe(struct device *_dev)
return result;
}
-static int ps3_system_bus_remove(struct device *_dev)
+static void 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;
@@ -393,13 +393,12 @@ static int ps3_system_bus_remove(struct device *_dev)
BUG_ON(!drv);
if (drv->remove)
- result = drv->remove(dev);
+ 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 void ps3_system_bus_shutdown(struct device *_dev)
@@ -440,7 +439,7 @@ static void ps3_system_bus_shutdown(struct device *_dev)
dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__);
}
-static int ps3_system_bus_uevent(struct device *_dev, struct kobj_uevent_env *env)
+static int ps3_system_bus_uevent(const struct device *_dev, struct kobj_uevent_env *env)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
@@ -454,10 +453,9 @@ 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:%d\n", dev->match_id,
- dev->match_sub_id);
- return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
+ return sysfs_emit(buf, "ps3:%d:%d\n", dev->match_id,
+ dev->match_sub_id);
}
static DEVICE_ATTR_RO(modalias);
@@ -467,7 +465,7 @@ static struct attribute *ps3_system_bus_dev_attrs[] = {
};
ATTRIBUTE_GROUPS(ps3_system_bus_dev);
-struct bus_type ps3_system_bus_type = {
+static const struct bus_type ps3_system_bus_type = {
.name = "ps3_system_bus",
.match = ps3_system_bus_match,
.uevent = ps3_system_bus_uevent,
@@ -553,18 +551,20 @@ static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr,
/* Creates TCEs for a user provided buffer. The user buffer must be
* contiguous real kernel storage (not vmalloc). The address passed here
- * comprises a page address and offset into that page. The dma_addr_t
- * returned will point to the same byte within the page as was passed in.
+ * is physical address to that hat page. The dma_addr_t returned will point
+ * to the same byte within the page as was passed in.
*/
-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,
- unsigned long attrs)
+static dma_addr_t ps3_sb_map_phys(struct device *_dev, phys_addr_t phys,
+ size_t size, enum dma_data_direction direction, unsigned long 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;
+ void *ptr = phys_to_virt(phys);
+
+ if (unlikely(attrs & DMA_ATTR_MMIO))
+ return DMA_MAPPING_ERROR;
result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
&bus_addr,
@@ -579,8 +579,8 @@ static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page,
return bus_addr;
}
-static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page,
- unsigned long offset, size_t size,
+static dma_addr_t ps3_ioc0_map_phys(struct device *_dev, phys_addr_t phys,
+ size_t size,
enum dma_data_direction direction,
unsigned long attrs)
{
@@ -588,7 +588,10 @@ static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page,
int result;
dma_addr_t bus_addr;
u64 iopte_flag;
- void *ptr = page_address(page) + offset;
+ void *ptr = phys_to_virt(phys);
+
+ if (unlikely(attrs & DMA_ATTR_MMIO))
+ return DMA_MAPPING_ERROR;
iopte_flag = CBE_IOPTE_M;
switch (direction) {
@@ -602,9 +605,9 @@ static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page,
iopte_flag |= CBE_IOPTE_PP_W | CBE_IOPTE_SO_RW;
break;
default:
- /* not happned */
+ /* not happened */
BUG();
- };
+ }
result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
&bus_addr, iopte_flag);
@@ -615,7 +618,7 @@ static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page,
return bus_addr;
}
-static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr,
+static void ps3_unmap_phys(struct device *_dev, dma_addr_t dma_addr,
size_t size, enum dma_data_direction direction, unsigned long attrs)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
@@ -663,7 +666,7 @@ static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg,
unsigned long attrs)
{
BUG();
- return 0;
+ return -EINVAL;
}
static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg,
@@ -692,10 +695,12 @@ static const struct dma_map_ops ps3_sb_dma_ops = {
.map_sg = ps3_sb_map_sg,
.unmap_sg = ps3_sb_unmap_sg,
.dma_supported = ps3_dma_supported,
- .map_page = ps3_sb_map_page,
- .unmap_page = ps3_unmap_page,
+ .map_phys = ps3_sb_map_phys,
+ .unmap_phys = ps3_unmap_phys,
.mmap = dma_common_mmap,
.get_sgtable = dma_common_get_sgtable,
+ .alloc_pages_op = dma_common_alloc_pages,
+ .free_pages = dma_common_free_pages,
};
static const struct dma_map_ops ps3_ioc0_dma_ops = {
@@ -704,10 +709,12 @@ static const struct dma_map_ops ps3_ioc0_dma_ops = {
.map_sg = ps3_ioc0_map_sg,
.unmap_sg = ps3_ioc0_unmap_sg,
.dma_supported = ps3_dma_supported,
- .map_page = ps3_ioc0_map_page,
- .unmap_page = ps3_unmap_page,
+ .map_phys = ps3_ioc0_map_phys,
+ .unmap_phys = ps3_unmap_phys,
.mmap = dma_common_mmap,
.get_sgtable = dma_common_get_sgtable,
+ .alloc_pages_op = dma_common_alloc_pages,
+ .free_pages = dma_common_free_pages,
};
/**
@@ -759,7 +766,7 @@ int ps3_system_bus_device_register(struct ps3_system_bus_device *dev)
break;
default:
BUG();
- };
+ }
dev->core.of_node = NULL;
set_dev_node(&dev->core, 0);
generated by cgit (git 2.34.1) at 2025-12-26 00:55:28 +0000