diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/include/asm/iommu.h | 15 | ||||
| -rw-r--r-- | arch/powerpc/kernel/dma-iommu.c | 34 | ||||
| -rw-r--r-- | arch/powerpc/kernel/ibmebus.c | 27 | ||||
| -rw-r--r-- | arch/powerpc/kernel/iommu.c | 22 | ||||
| -rw-r--r-- | arch/powerpc/kernel/vio.c | 25 | ||||
| -rw-r--r-- | arch/powerpc/platforms/cell/iommu.c | 37 | ||||
| -rw-r--r-- | arch/powerpc/platforms/iseries/iommu.c | 7 | ||||
| -rw-r--r-- | arch/powerpc/platforms/ps3/system-bus.c | 36 |
8 files changed, 104 insertions, 99 deletions
diff --git a/arch/powerpc/include/asm/iommu.h b/arch/powerpc/include/asm/iommu.h index 51ecfef8d84..7464c0daddd 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 49248f89ce2..14183af1b3f 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 a06362223f8..64299d28f36 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 45f47c97fd1..1bfa706b96e 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 434c92a85c0..a11e6bc59b3 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 ef92e714621..3168272ab0d 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 bb464d1211b..bbe828f1b88 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 a789bf58ca8..661e9f77ebf 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, }; /** |