diff --git a/arch/powerpc/include/asm/iommu.h b/arch/powerpc/include/asm/iommu.h
index 51ecfef8d84381a0c5740dc9123c599d5961bd76..7464c0daddd1d02f5f8f66d1df9a26f92bbc7783 100644
--- a/arch/powerpc/include/asm/iommu.h
+++ b/arch/powerpc/include/asm/iommu.h
@@ -92,13 +92,14 @@ extern void *iommu_alloc_coherent(struct device *dev, struct iommu_table *tbl,
unsigned long mask, gfp_t flag, int node);
extern void iommu_free_coherent(struct iommu_table *tbl, size_t size,
void *vaddr, dma_addr_t dma_handle);
-extern dma_addr_t iommu_map_single(struct device *dev, struct iommu_table *tbl,
- void *vaddr, size_t size, unsigned long mask,
- enum dma_data_direction direction,
- struct dma_attrs *attrs);
-extern void iommu_unmap_single(struct iommu_table *tbl, dma_addr_t dma_handle,
- size_t size, enum dma_data_direction direction,
- struct dma_attrs *attrs);
+extern dma_addr_t iommu_map_page(struct device *dev, struct iommu_table *tbl,
+ struct page *page, unsigned long offset,
+ size_t size, unsigned long mask,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs);
+extern void iommu_unmap_page(struct iommu_table *tbl, dma_addr_t dma_handle,
+ size_t size, enum dma_data_direction direction,
+ struct dma_attrs *attrs);
extern void iommu_init_early_pSeries(void);
extern void iommu_init_early_iSeries(void);
diff --git a/arch/powerpc/kernel/dma-iommu.c b/arch/powerpc/kernel/dma-iommu.c
index 49248f89ce23b19c6b57a04c32e6c36d8ac31e9d..14183af1b3fb9ea208108662ed09efd82787b7c1 100644
--- a/arch/powerpc/kernel/dma-iommu.c
+++ b/arch/powerpc/kernel/dma-iommu.c
@@ -30,28 +30,26 @@ static void dma_iommu_free_coherent(struct device *dev, size_t size,
}
/* Creates TCEs for a user provided buffer. The user buffer must be
- * contiguous real kernel storage (not vmalloc). The address of the buffer
- * passed here is the kernel (virtual) address of the buffer. The buffer
- * need not be page aligned, the dma_addr_t returned will point to the same
- * byte within the page as vaddr.
+ * 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.
*/
-static dma_addr_t dma_iommu_map_single(struct device *dev, void *vaddr,
- size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
+static dma_addr_t dma_iommu_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
- return iommu_map_single(dev, dev->archdata.dma_data, vaddr, size,
- device_to_mask(dev), direction, attrs);
+ return iommu_map_page(dev, dev->archdata.dma_data, page, offset, size,
+ device_to_mask(dev), direction, attrs);
}
-static void dma_iommu_unmap_single(struct device *dev, dma_addr_t dma_handle,
- size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
+static void dma_iommu_unmap_page(struct device *dev, dma_addr_t dma_handle,
+ size_t size, enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
- iommu_unmap_single(dev->archdata.dma_data, dma_handle, size, direction,
- attrs);
+ iommu_unmap_page(dev->archdata.dma_data, dma_handle, size, direction,
+ attrs);
}
@@ -94,10 +92,10 @@ static int dma_iommu_dma_supported(struct device *dev, u64 mask)
struct dma_mapping_ops dma_iommu_ops = {
.alloc_coherent = dma_iommu_alloc_coherent,
.free_coherent = dma_iommu_free_coherent,
- .map_single = dma_iommu_map_single,
- .unmap_single = dma_iommu_unmap_single,
.map_sg = dma_iommu_map_sg,
.unmap_sg = dma_iommu_unmap_sg,
.dma_supported = dma_iommu_dma_supported,
+ .map_page = dma_iommu_map_page,
+ .unmap_page = dma_iommu_unmap_page,
};
EXPORT_SYMBOL(dma_iommu_ops);
diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index a06362223f8d984e699f84ad9a25859609607887..64299d28f36485d3441e0b59604228e141712cb1 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -79,20 +79,21 @@ static void ibmebus_free_coherent(struct device *dev,
kfree(vaddr);
}
-static dma_addr_t ibmebus_map_single(struct device *dev,
- void *ptr,
- size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
+static dma_addr_t ibmebus_map_page(struct device *dev,
+ struct page *page,
+ unsigned long offset,
+ size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
- return (dma_addr_t)(ptr);
+ return (dma_addr_t)(page_address(page) + offset);
}
-static void ibmebus_unmap_single(struct device *dev,
- dma_addr_t dma_addr,
- size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
+static void ibmebus_unmap_page(struct device *dev,
+ dma_addr_t dma_addr,
+ size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
return;
}
@@ -129,11 +130,11 @@ static int ibmebus_dma_supported(struct device *dev, u64 mask)
static struct dma_mapping_ops ibmebus_dma_ops = {
.alloc_coherent = ibmebus_alloc_coherent,
.free_coherent = ibmebus_free_coherent,
- .map_single = ibmebus_map_single,
- .unmap_single = ibmebus_unmap_single,
.map_sg = ibmebus_map_sg,
.unmap_sg = ibmebus_unmap_sg,
.dma_supported = ibmebus_dma_supported,
+ .map_page = ibmebus_map_page,
+ .unmap_page = ibmebus_unmap_page,
};
static int ibmebus_match_path(struct device *dev, void *data)
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 45f47c97fd1400363c6d1b0b6552d2bb6da934ba..1bfa706b96e74df4957ccbae5d02a566fe65f5e0 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -565,21 +565,23 @@ void iommu_free_table(struct iommu_table *tbl, const char *node_name)
}
/* Creates TCEs for a user provided buffer. The user buffer must be
- * contiguous real kernel storage (not vmalloc). The address of the buffer
- * passed here is the kernel (virtual) address of the buffer. The buffer
- * need not be page aligned, the dma_addr_t returned will point to the same
- * byte within the page as vaddr.
+ * 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.
*/
-dma_addr_t iommu_map_single(struct device *dev, struct iommu_table *tbl,
- void *vaddr, size_t size, unsigned long mask,
- enum dma_data_direction direction, struct dma_attrs *attrs)
+dma_addr_t iommu_map_page(struct device *dev, struct iommu_table *tbl,
+ struct page *page, unsigned long offset, size_t size,
+ unsigned long mask, enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
dma_addr_t dma_handle = DMA_ERROR_CODE;
+ void *vaddr;
unsigned long uaddr;
unsigned int npages, align;
BUG_ON(direction == DMA_NONE);
+ vaddr = page_address(page) + offset;
uaddr = (unsigned long)vaddr;
npages = iommu_num_pages(uaddr, size, IOMMU_PAGE_SIZE);
@@ -605,9 +607,9 @@ dma_addr_t iommu_map_single(struct device *dev, struct iommu_table *tbl,
return dma_handle;
}
-void iommu_unmap_single(struct iommu_table *tbl, dma_addr_t dma_handle,
- size_t size, enum dma_data_direction direction,
- struct dma_attrs *attrs)
+void iommu_unmap_page(struct iommu_table *tbl, dma_addr_t dma_handle,
+ size_t size, enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
unsigned int npages;
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index 434c92a85c037431512e96f16b4e9ea49265a6c6..a11e6bc59b307e9d9ac7e6892e95a4eef34f6ca1 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -516,10 +516,10 @@ static void vio_dma_iommu_free_coherent(struct device *dev, size_t size,
vio_cmo_dealloc(viodev, roundup(size, IOMMU_PAGE_SIZE));
}
-static dma_addr_t vio_dma_iommu_map_single(struct device *dev, void *vaddr,
- size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
+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,
+ struct dma_attrs *attrs)
{
struct vio_dev *viodev = to_vio_dev(dev);
dma_addr_t ret = DMA_ERROR_CODE;
@@ -529,7 +529,7 @@ static dma_addr_t vio_dma_iommu_map_single(struct device *dev, void *vaddr,
return ret;
}
- ret = dma_iommu_ops.map_single(dev, vaddr, size, direction, attrs);
+ ret = dma_iommu_ops.map_page(dev, page, offset, size, direction, attrs);
if (unlikely(dma_mapping_error(dev, ret))) {
vio_cmo_dealloc(viodev, roundup(size, IOMMU_PAGE_SIZE));
atomic_inc(&viodev->cmo.allocs_failed);
@@ -538,14 +538,14 @@ static dma_addr_t vio_dma_iommu_map_single(struct device *dev, void *vaddr,
return ret;
}
-static void vio_dma_iommu_unmap_single(struct device *dev,
- dma_addr_t dma_handle, size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
+static void vio_dma_iommu_unmap_page(struct device *dev, dma_addr_t dma_handle,
+ size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
struct vio_dev *viodev = to_vio_dev(dev);
- dma_iommu_ops.unmap_single(dev, dma_handle, size, direction, attrs);
+ dma_iommu_ops.unmap_page(dev, dma_handle, size, direction, attrs);
vio_cmo_dealloc(viodev, roundup(size, IOMMU_PAGE_SIZE));
}
@@ -603,10 +603,11 @@ static void vio_dma_iommu_unmap_sg(struct device *dev,
struct dma_mapping_ops vio_dma_mapping_ops = {
.alloc_coherent = vio_dma_iommu_alloc_coherent,
.free_coherent = vio_dma_iommu_free_coherent,
- .map_single = vio_dma_iommu_map_single,
- .unmap_single = vio_dma_iommu_unmap_single,
.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,
+
};
/**
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index ef92e71462151efc9e97c26c0c7442ad7a8c4caf..3168272ab0d791cf750606ced53c560699ad90c9 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -593,31 +593,30 @@ static void dma_fixed_free_coherent(struct device *dev, size_t size,
dma_direct_ops.free_coherent(dev, size, vaddr, dma_handle);
}
-static dma_addr_t dma_fixed_map_single(struct device *dev, void *ptr,
- size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
+static dma_addr_t dma_fixed_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
if (iommu_fixed_is_weak == dma_get_attr(DMA_ATTR_WEAK_ORDERING, attrs))
- return dma_direct_ops.map_single(dev, ptr, size, direction,
- attrs);
+ return dma_direct_ops.map_page(dev, page, offset, size,
+ direction, attrs);
else
- return iommu_map_single(dev, cell_get_iommu_table(dev), ptr,
- size, device_to_mask(dev), direction,
- attrs);
+ return iommu_map_page(dev, cell_get_iommu_table(dev), page,
+ offset, size, device_to_mask(dev),
+ direction, attrs);
}
-static void dma_fixed_unmap_single(struct device *dev, dma_addr_t dma_addr,
- size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
+static void dma_fixed_unmap_page(struct device *dev, dma_addr_t dma_addr,
+ size_t size, enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
if (iommu_fixed_is_weak == dma_get_attr(DMA_ATTR_WEAK_ORDERING, attrs))
- dma_direct_ops.unmap_single(dev, dma_addr, size, direction,
- attrs);
+ dma_direct_ops.unmap_page(dev, dma_addr, size, direction,
+ attrs);
else
- iommu_unmap_single(cell_get_iommu_table(dev), dma_addr, size,
- direction, attrs);
+ iommu_unmap_page(cell_get_iommu_table(dev), dma_addr, size,
+ direction, attrs);
}
static int dma_fixed_map_sg(struct device *dev, struct scatterlist *sg,
@@ -652,12 +651,12 @@ static int dma_set_mask_and_switch(struct device *dev, u64 dma_mask);
struct dma_mapping_ops dma_iommu_fixed_ops = {
.alloc_coherent = dma_fixed_alloc_coherent,
.free_coherent = dma_fixed_free_coherent,
- .map_single = dma_fixed_map_single,
- .unmap_single = dma_fixed_unmap_single,
.map_sg = dma_fixed_map_sg,
.unmap_sg = dma_fixed_unmap_sg,
.dma_supported = dma_fixed_dma_supported,
.set_dma_mask = dma_set_mask_and_switch,
+ .map_page = dma_fixed_map_page,
+ .unmap_page = dma_fixed_unmap_page,
};
static void cell_dma_dev_setup_fixed(struct device *dev);
diff --git a/arch/powerpc/platforms/iseries/iommu.c b/arch/powerpc/platforms/iseries/iommu.c
index bb464d1211b2f5842bdb6d09862396600b6d9e33..bbe828f1b885d0fb072bbd12bad2ae7499d51297 100644
--- a/arch/powerpc/platforms/iseries/iommu.c
+++ b/arch/powerpc/platforms/iseries/iommu.c
@@ -215,14 +215,15 @@ EXPORT_SYMBOL_GPL(iseries_hv_free);
dma_addr_t iseries_hv_map(void *vaddr, size_t size,
enum dma_data_direction direction)
{
- return iommu_map_single(NULL, &vio_iommu_table, vaddr, size,
- DMA_32BIT_MASK, direction, NULL);
+ return iommu_map_page(NULL, &vio_iommu_table, virt_to_page(vaddr),
+ (unsigned long)vaddr % PAGE_SIZE, size,
+ DMA_32BIT_MASK, direction, NULL);
}
void iseries_hv_unmap(dma_addr_t dma_handle, size_t size,
enum dma_data_direction direction)
{
- iommu_unmap_single(&vio_iommu_table, dma_handle, size, direction, NULL);
+ iommu_unmap_page(&vio_iommu_table, dma_handle, size, direction, NULL);
}
void __init iommu_vio_init(void)
diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c
index a789bf58ca8b83bb60b98de3d2641cab5b52705c..661e9f77ebf6be4c70d5e013e65be1229cf665cb 100644
--- a/arch/powerpc/platforms/ps3/system-bus.c
+++ b/arch/powerpc/platforms/ps3/system-bus.c
@@ -555,18 +555,19 @@ 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 of the buffer
- * passed here is the kernel (virtual) address of the buffer. The buffer
- * need not be page aligned, the dma_addr_t returned will point to the same
- * byte within the page as vaddr.
+ * 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.
*/
-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)
+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;
unsigned long bus_addr;
+ void *ptr = page_address(page) + offset;
result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
&bus_addr,
@@ -580,15 +581,16 @@ static dma_addr_t ps3_sb_map_single(struct device *_dev, void *ptr, size_t size,
return bus_addr;
}
-static dma_addr_t ps3_ioc0_map_single(struct device *_dev, void *ptr,
- size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
+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;
unsigned long bus_addr;
u64 iopte_flag;
+ void *ptr = page_address(page) + offset;
iopte_flag = IOPTE_M;
switch (direction) {
@@ -615,7 +617,7 @@ static dma_addr_t ps3_ioc0_map_single(struct device *_dev, void *ptr,
return bus_addr;
}
-static void ps3_unmap_single(struct device *_dev, dma_addr_t dma_addr,
+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);
@@ -689,21 +691,21 @@ static int ps3_dma_supported(struct device *_dev, u64 mask)
static struct dma_mapping_ops ps3_sb_dma_ops = {
.alloc_coherent = ps3_alloc_coherent,
.free_coherent = ps3_free_coherent,
- .map_single = ps3_sb_map_single,
- .unmap_single = ps3_unmap_single,
.map_sg = ps3_sb_map_sg,
.unmap_sg = ps3_sb_unmap_sg,
- .dma_supported = ps3_dma_supported
+ .dma_supported = ps3_dma_supported,
+ .map_page = ps3_sb_map_page,
+ .unmap_page = ps3_unmap_page,
};
static struct dma_mapping_ops ps3_ioc0_dma_ops = {
.alloc_coherent = ps3_alloc_coherent,
.free_coherent = ps3_free_coherent,
- .map_single = ps3_ioc0_map_single,
- .unmap_single = ps3_unmap_single,
.map_sg = ps3_ioc0_map_sg,
.unmap_sg = ps3_ioc0_unmap_sg,
- .dma_supported = ps3_dma_supported
+ .dma_supported = ps3_dma_supported,
+ .map_page = ps3_ioc0_map_page,
+ .unmap_page = ps3_unmap_page,
};
/**