summaryrefslogtreecommitdiff
path: root/arch/powerpc/platforms
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/cell/spu_base.c2
-rw-r--r--arch/powerpc/platforms/ps3/system-bus.c35
-rw-r--r--arch/powerpc/platforms/pseries/cmm.c2
-rw-r--r--arch/powerpc/platforms/pseries/ibmebus.c15
-rw-r--r--arch/powerpc/platforms/pseries/suspend.c2
-rw-r--r--arch/powerpc/platforms/pseries/vio.c21
6 files changed, 43 insertions, 34 deletions
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index 2ddb93df4817..3c8624870967 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -464,7 +464,7 @@ void spu_init_channels(struct spu *spu)
}
EXPORT_SYMBOL_GPL(spu_init_channels);
-static struct bus_type spu_subsys = {
+static const struct bus_type spu_subsys = {
.name = "spu",
.dev_name = "spu",
};
diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c
index afbaabf182d0..0537a678a32f 100644
--- a/arch/powerpc/platforms/ps3/system-bus.c
+++ b/arch/powerpc/platforms/ps3/system-bus.c
@@ -465,7 +465,7 @@ static struct attribute *ps3_system_bus_dev_attrs[] = {
};
ATTRIBUTE_GROUPS(ps3_system_bus_dev);
-static 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,
@@ -551,18 +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,
@@ -577,8 +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)
{
@@ -586,7 +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) {
@@ -613,7 +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);
@@ -690,8 +695,8 @@ 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,
@@ -704,8 +709,8 @@ 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,
diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c
index 0823fa2da151..502133979e22 100644
--- a/arch/powerpc/platforms/pseries/cmm.c
+++ b/arch/powerpc/platforms/pseries/cmm.c
@@ -375,7 +375,7 @@ static struct device_attribute *cmm_attrs[] = {
static DEVICE_ULONG_ATTR(simulate_loan_target_kb, 0644,
simulate_loan_target_kb);
-static struct bus_type cmm_subsys = {
+static const struct bus_type cmm_subsys = {
.name = "cmm",
.dev_name = "cmm",
};
diff --git a/arch/powerpc/platforms/pseries/ibmebus.c b/arch/powerpc/platforms/pseries/ibmebus.c
index 3436b0af795e..cad2deb7e70d 100644
--- a/arch/powerpc/platforms/pseries/ibmebus.c
+++ b/arch/powerpc/platforms/pseries/ibmebus.c
@@ -86,17 +86,18 @@ static void ibmebus_free_coherent(struct device *dev,
kfree(vaddr);
}
-static dma_addr_t ibmebus_map_page(struct device *dev,
- struct page *page,
- unsigned long offset,
+static dma_addr_t ibmebus_map_phys(struct device *dev, phys_addr_t phys,
size_t size,
enum dma_data_direction direction,
unsigned long attrs)
{
- return (dma_addr_t)(page_address(page) + offset);
+ if (attrs & DMA_ATTR_MMIO)
+ return DMA_MAPPING_ERROR;
+
+ return (dma_addr_t)(phys_to_virt(phys));
}
-static void ibmebus_unmap_page(struct device *dev,
+static void ibmebus_unmap_phys(struct device *dev,
dma_addr_t dma_addr,
size_t size,
enum dma_data_direction direction,
@@ -146,8 +147,8 @@ static const struct dma_map_ops ibmebus_dma_ops = {
.unmap_sg = ibmebus_unmap_sg,
.dma_supported = ibmebus_dma_supported,
.get_required_mask = ibmebus_dma_get_required_mask,
- .map_page = ibmebus_map_page,
- .unmap_page = ibmebus_unmap_page,
+ .map_phys = ibmebus_map_phys,
+ .unmap_phys = ibmebus_unmap_phys,
};
static int ibmebus_match_path(struct device *dev, const void *data)
diff --git a/arch/powerpc/platforms/pseries/suspend.c b/arch/powerpc/platforms/pseries/suspend.c
index 382003dfdb9a..c51db63d3e88 100644
--- a/arch/powerpc/platforms/pseries/suspend.c
+++ b/arch/powerpc/platforms/pseries/suspend.c
@@ -126,7 +126,7 @@ static ssize_t show_hibernate(struct device *dev,
static DEVICE_ATTR(hibernate, 0644, show_hibernate, store_hibernate);
-static struct bus_type suspend_subsys = {
+static const struct bus_type suspend_subsys = {
.name = "power",
.dev_name = "power",
};
diff --git a/arch/powerpc/platforms/pseries/vio.c b/arch/powerpc/platforms/pseries/vio.c
index ac1d2d2c9a88..18cffac5468f 100644
--- a/arch/powerpc/platforms/pseries/vio.c
+++ b/arch/powerpc/platforms/pseries/vio.c
@@ -512,18 +512,21 @@ static void vio_dma_iommu_free_coherent(struct device *dev, size_t size,
vio_cmo_dealloc(viodev, roundup(size, PAGE_SIZE));
}
-static dma_addr_t vio_dma_iommu_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 vio_dma_iommu_map_phys(struct device *dev, phys_addr_t phys,
+ size_t size,
+ enum dma_data_direction direction,
+ unsigned long attrs)
{
struct vio_dev *viodev = to_vio_dev(dev);
struct iommu_table *tbl = get_iommu_table_base(dev);
dma_addr_t ret = DMA_MAPPING_ERROR;
+ if (unlikely(attrs & DMA_ATTR_MMIO))
+ return ret;
+
if (vio_cmo_alloc(viodev, roundup(size, IOMMU_PAGE_SIZE(tbl))))
goto out_fail;
- ret = iommu_map_page(dev, tbl, page, offset, size, dma_get_mask(dev),
+ ret = iommu_map_phys(dev, tbl, phys, size, dma_get_mask(dev),
direction, attrs);
if (unlikely(ret == DMA_MAPPING_ERROR))
goto out_deallocate;
@@ -536,7 +539,7 @@ out_fail:
return DMA_MAPPING_ERROR;
}
-static void vio_dma_iommu_unmap_page(struct device *dev, dma_addr_t dma_handle,
+static void vio_dma_iommu_unmap_phys(struct device *dev, dma_addr_t dma_handle,
size_t size,
enum dma_data_direction direction,
unsigned long attrs)
@@ -544,7 +547,7 @@ static void vio_dma_iommu_unmap_page(struct device *dev, dma_addr_t dma_handle,
struct vio_dev *viodev = to_vio_dev(dev);
struct iommu_table *tbl = get_iommu_table_base(dev);
- iommu_unmap_page(tbl, dma_handle, size, direction, attrs);
+ iommu_unmap_phys(tbl, dma_handle, size, direction, attrs);
vio_cmo_dealloc(viodev, roundup(size, IOMMU_PAGE_SIZE(tbl)));
}
@@ -605,8 +608,8 @@ static const struct dma_map_ops vio_dma_mapping_ops = {
.free = vio_dma_iommu_free_coherent,
.map_sg = vio_dma_iommu_map_sg,
.unmap_sg = vio_dma_iommu_unmap_sg,
- .map_page = vio_dma_iommu_map_page,
- .unmap_page = vio_dma_iommu_unmap_page,
+ .map_phys = vio_dma_iommu_map_phys,
+ .unmap_phys = vio_dma_iommu_unmap_phys,
.dma_supported = dma_iommu_dma_supported,
.get_required_mask = dma_iommu_get_required_mask,
.mmap = dma_common_mmap,
generated by cgit (git 2.34.1) at 2025-12-07 14:34:40 +0000