diff options
Diffstat (limited to 'arch/sparc/kernel')
| -rw-r--r-- | arch/sparc/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/sparc/kernel/dma.c | 175 | ||||
| -rw-r--r-- | arch/sparc/kernel/dma.h | 14 | ||||
| -rw-r--r-- | arch/sparc/kernel/iommu.c | 20 | ||||
| -rw-r--r-- | arch/sparc/kernel/ioport.c | 190 | ||||
| -rw-r--r-- | arch/sparc/kernel/pci.c | 2 | ||||
| -rw-r--r-- | arch/sparc/kernel/pci_sun4v.c | 30 |
7 files changed, 134 insertions, 299 deletions
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile index 475ce4696acd..29b88a580661 100644 --- a/arch/sparc/kernel/Makefile +++ b/arch/sparc/kernel/Makefile @@ -61,7 +61,7 @@ obj-$(CONFIG_SPARC64_SMP) += cpumap.o obj-$(CONFIG_SPARC32) += devres.o devres-y := ../../../kernel/irq/devres.o -obj-$(CONFIG_SPARC32) += dma.o +obj-y += dma.o obj-$(CONFIG_SPARC32_PCI) += pcic.o diff --git a/arch/sparc/kernel/dma.c b/arch/sparc/kernel/dma.c index 524c32f97c55..e1ba8ee21b9a 100644 --- a/arch/sparc/kernel/dma.c +++ b/arch/sparc/kernel/dma.c @@ -1,178 +1,13 @@ -/* dma.c: PCI and SBUS DMA accessors for 32-bit sparc. - * - * Copyright (C) 2008 David S. Miller <davem@davemloft.net> - */ - #include <linux/kernel.h> #include <linux/module.h> #include <linux/dma-mapping.h> -#include <linux/scatterlist.h> -#include <linux/mm.h> - -#ifdef CONFIG_PCI -#include <linux/pci.h> -#endif +#include <linux/dma-debug.h> -#include "dma.h" +#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 15) -int dma_supported(struct device *dev, u64 mask) +static int __init dma_init(void) { -#ifdef CONFIG_PCI - if (dev->bus == &pci_bus_type) - return pci_dma_supported(to_pci_dev(dev), mask); -#endif + dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES); return 0; } -EXPORT_SYMBOL(dma_supported); - -int dma_set_mask(struct device *dev, u64 dma_mask) -{ -#ifdef CONFIG_PCI - if (dev->bus == &pci_bus_type) - return pci_set_dma_mask(to_pci_dev(dev), dma_mask); -#endif - return -EOPNOTSUPP; -} -EXPORT_SYMBOL(dma_set_mask); - -static void *dma32_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag) -{ -#ifdef CONFIG_PCI - if (dev->bus == &pci_bus_type) - return pci_alloc_consistent(to_pci_dev(dev), size, dma_handle); -#endif - return sbus_alloc_consistent(dev, size, dma_handle); -} - -static void dma32_free_coherent(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t dma_handle) -{ -#ifdef CONFIG_PCI - if (dev->bus == &pci_bus_type) { - pci_free_consistent(to_pci_dev(dev), size, - cpu_addr, dma_handle); - return; - } -#endif - sbus_free_consistent(dev, size, cpu_addr, dma_handle); -} - -static dma_addr_t dma32_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ -#ifdef CONFIG_PCI - if (dev->bus == &pci_bus_type) - return pci_map_page(to_pci_dev(dev), page, offset, - size, (int)direction); -#endif - return sbus_map_single(dev, page_address(page) + offset, - size, (int)direction); -} - -static void dma32_unmap_page(struct device *dev, dma_addr_t dma_address, - size_t size, enum dma_data_direction direction) -{ -#ifdef CONFIG_PCI - if (dev->bus == &pci_bus_type) { - pci_unmap_page(to_pci_dev(dev), dma_address, - size, (int)direction); - return; - } -#endif - sbus_unmap_single(dev, dma_address, size, (int)direction); -} - -static int dma32_map_sg(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction direction) -{ -#ifdef CONFIG_PCI - if (dev->bus == &pci_bus_type) - return pci_map_sg(to_pci_dev(dev), sg, nents, (int)direction); -#endif - return sbus_map_sg(dev, sg, nents, direction); -} - -void dma32_unmap_sg(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction direction) -{ -#ifdef CONFIG_PCI - if (dev->bus == &pci_bus_type) { - pci_unmap_sg(to_pci_dev(dev), sg, nents, (int)direction); - return; - } -#endif - sbus_unmap_sg(dev, sg, nents, (int)direction); -} - -static void dma32_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, - size_t size, - enum dma_data_direction direction) -{ -#ifdef CONFIG_PCI - if (dev->bus == &pci_bus_type) { - pci_dma_sync_single_for_cpu(to_pci_dev(dev), dma_handle, - size, (int)direction); - return; - } -#endif - sbus_dma_sync_single_for_cpu(dev, dma_handle, size, (int) direction); -} - -static void dma32_sync_single_for_device(struct device *dev, - dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction) -{ -#ifdef CONFIG_PCI - if (dev->bus == &pci_bus_type) { - pci_dma_sync_single_for_device(to_pci_dev(dev), dma_handle, - size, (int)direction); - return; - } -#endif - sbus_dma_sync_single_for_device(dev, dma_handle, size, (int) direction); -} - -static void dma32_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, - int nelems, enum dma_data_direction direction) -{ -#ifdef CONFIG_PCI - if (dev->bus == &pci_bus_type) { - pci_dma_sync_sg_for_cpu(to_pci_dev(dev), sg, - nelems, (int)direction); - return; - } -#endif - BUG(); -} - -static void dma32_sync_sg_for_device(struct device *dev, - struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ -#ifdef CONFIG_PCI - if (dev->bus == &pci_bus_type) { - pci_dma_sync_sg_for_device(to_pci_dev(dev), sg, - nelems, (int)direction); - return; - } -#endif - BUG(); -} - -static const struct dma_ops dma32_dma_ops = { - .alloc_coherent = dma32_alloc_coherent, - .free_coherent = dma32_free_coherent, - .map_page = dma32_map_page, - .unmap_page = dma32_unmap_page, - .map_sg = dma32_map_sg, - .unmap_sg = dma32_unmap_sg, - .sync_single_for_cpu = dma32_sync_single_for_cpu, - .sync_single_for_device = dma32_sync_single_for_device, - .sync_sg_for_cpu = dma32_sync_sg_for_cpu, - .sync_sg_for_device = dma32_sync_sg_for_device, -}; - -const struct dma_ops *dma_ops = &dma32_dma_ops; -EXPORT_SYMBOL(dma_ops); +fs_initcall(dma_init); diff --git a/arch/sparc/kernel/dma.h b/arch/sparc/kernel/dma.h deleted file mode 100644 index f8d8951adb53..000000000000 --- a/arch/sparc/kernel/dma.h +++ /dev/null @@ -1,14 +0,0 @@ -void *sbus_alloc_consistent(struct device *dev, long len, u32 *dma_addrp); -void sbus_free_consistent(struct device *dev, long n, void *p, u32 ba); -dma_addr_t sbus_map_single(struct device *dev, void *va, - size_t len, int direction); -void sbus_unmap_single(struct device *dev, dma_addr_t ba, - size_t n, int direction); -int sbus_map_sg(struct device *dev, struct scatterlist *sg, - int n, int direction); -void sbus_unmap_sg(struct device *dev, struct scatterlist *sg, - int n, int direction); -void sbus_dma_sync_single_for_cpu(struct device *dev, dma_addr_t ba, - size_t size, int direction); -void sbus_dma_sync_single_for_device(struct device *dev, dma_addr_t ba, - size_t size, int direction); diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c index 0aeaefe696b9..7690cc219ecc 100644 --- a/arch/sparc/kernel/iommu.c +++ b/arch/sparc/kernel/iommu.c @@ -353,7 +353,8 @@ static void dma_4u_free_coherent(struct device *dev, size_t size, static dma_addr_t dma_4u_map_page(struct device *dev, struct page *page, unsigned long offset, size_t sz, - enum dma_data_direction direction) + enum dma_data_direction direction, + struct dma_attrs *attrs) { struct iommu *iommu; struct strbuf *strbuf; @@ -474,7 +475,8 @@ do_flush_sync: } static void dma_4u_unmap_page(struct device *dev, dma_addr_t bus_addr, - size_t sz, enum dma_data_direction direction) + size_t sz, enum dma_data_direction direction, + struct dma_attrs *attrs) { struct iommu *iommu; struct strbuf *strbuf; @@ -520,7 +522,8 @@ static void dma_4u_unmap_page(struct device *dev, dma_addr_t bus_addr, } static int dma_4u_map_sg(struct device *dev, struct scatterlist *sglist, - int nelems, enum dma_data_direction direction) + int nelems, enum dma_data_direction direction, + struct dma_attrs *attrs) { struct scatterlist *s, *outs, *segstart; unsigned long flags, handle, prot, ctx; @@ -691,7 +694,8 @@ static unsigned long fetch_sg_ctx(struct iommu *iommu, struct scatterlist *sg) } static void dma_4u_unmap_sg(struct device *dev, struct scatterlist *sglist, - int nelems, enum dma_data_direction direction) + int nelems, enum dma_data_direction direction, + struct dma_attrs *attrs) { unsigned long flags, ctx; struct scatterlist *sg; @@ -822,7 +826,7 @@ static void dma_4u_sync_sg_for_cpu(struct device *dev, spin_unlock_irqrestore(&iommu->lock, flags); } -static const struct dma_ops sun4u_dma_ops = { +static struct dma_map_ops sun4u_dma_ops = { .alloc_coherent = dma_4u_alloc_coherent, .free_coherent = dma_4u_free_coherent, .map_page = dma_4u_map_page, @@ -833,9 +837,11 @@ static const struct dma_ops sun4u_dma_ops = { .sync_sg_for_cpu = dma_4u_sync_sg_for_cpu, }; -const struct dma_ops *dma_ops = &sun4u_dma_ops; +struct dma_map_ops *dma_ops = &sun4u_dma_ops; EXPORT_SYMBOL(dma_ops); +extern int pci64_dma_supported(struct pci_dev *pdev, u64 device_mask); + int dma_supported(struct device *dev, u64 device_mask) { struct iommu *iommu = dev->archdata.iommu; @@ -849,7 +855,7 @@ int dma_supported(struct device *dev, u64 device_mask) #ifdef CONFIG_PCI if (dev->bus == &pci_bus_type) - return pci_dma_supported(to_pci_dev(dev), device_mask); + return pci64_dma_supported(to_pci_dev(dev), device_mask); #endif return 0; diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c index 87ea0d03d975..edbea232c617 100644 --- a/arch/sparc/kernel/ioport.c +++ b/arch/sparc/kernel/ioport.c @@ -48,8 +48,6 @@ #include <asm/iommu.h> #include <asm/io-unit.h> -#include "dma.h" - #define mmu_inval_dma_area(p, l) /* Anton pulled it out for 2.4.0-xx */ static struct resource *_sparc_find_resource(struct resource *r, @@ -246,7 +244,8 @@ EXPORT_SYMBOL(sbus_set_sbus64); * Typically devices use them for control blocks. * CPU may access them without any explicit flushing. */ -void *sbus_alloc_consistent(struct device *dev, long len, u32 *dma_addrp) +static void *sbus_alloc_coherent(struct device *dev, size_t len, + dma_addr_t *dma_addrp, gfp_t gfp) { struct of_device *op = to_of_device(dev); unsigned long len_total = (len + PAGE_SIZE-1) & PAGE_MASK; @@ -299,7 +298,8 @@ err_nopages: return NULL; } -void sbus_free_consistent(struct device *dev, long n, void *p, u32 ba) +static void sbus_free_coherent(struct device *dev, size_t n, void *p, + dma_addr_t ba) { struct resource *res; struct page *pgv; @@ -317,7 +317,7 @@ void sbus_free_consistent(struct device *dev, long n, void *p, u32 ba) n = (n + PAGE_SIZE-1) & PAGE_MASK; if ((res->end-res->start)+1 != n) { - printk("sbus_free_consistent: region 0x%lx asked 0x%lx\n", + printk("sbus_free_consistent: region 0x%lx asked 0x%zx\n", (long)((res->end-res->start)+1), n); return; } @@ -337,8 +337,13 @@ void sbus_free_consistent(struct device *dev, long n, void *p, u32 ba) * CPU view of this memory may be inconsistent with * a device view and explicit flushing is necessary. */ -dma_addr_t sbus_map_single(struct device *dev, void *va, size_t len, int direction) +static dma_addr_t sbus_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t len, + enum dma_data_direction dir, + struct dma_attrs *attrs) { + void *va = page_address(page) + offset; + /* XXX why are some lengths signed, others unsigned? */ if (len <= 0) { return 0; @@ -350,12 +355,14 @@ dma_addr_t sbus_map_single(struct device *dev, void *va, size_t len, int directi return mmu_get_scsi_one(dev, va, len); } -void sbus_unmap_single(struct device *dev, dma_addr_t ba, size_t n, int direction) +static void sbus_unmap_page(struct device *dev, dma_addr_t ba, size_t n, + enum dma_data_direction dir, struct dma_attrs *attrs) { mmu_release_scsi_one(dev, ba, n); } -int sbus_map_sg(struct device *dev, struct scatterlist *sg, int n, int direction) +static int sbus_map_sg(struct device *dev, struct scatterlist *sg, int n, + enum dma_data_direction dir, struct dma_attrs *attrs) { mmu_get_scsi_sgl(dev, sg, n); @@ -366,19 +373,38 @@ int sbus_map_sg(struct device *dev, struct scatterlist *sg, int n, int direction return n; } -void sbus_unmap_sg(struct device *dev, struct scatterlist *sg, int n, int direction) +static void sbus_unmap_sg(struct device *dev, struct scatterlist *sg, int n, + enum dma_data_direction dir, struct dma_attrs *attrs) { mmu_release_scsi_sgl(dev, sg, n); } -void sbus_dma_sync_single_for_cpu(struct device *dev, dma_addr_t ba, size_t size, int direction) +static void sbus_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, + int n, enum dma_data_direction dir) { + BUG(); } -void sbus_dma_sync_single_for_device(struct device *dev, dma_addr_t ba, size_t size, int direction) +static void sbus_sync_sg_for_device(struct device *dev, struct scatterlist *sg, + int n, enum dma_data_direction dir) { + BUG(); } +struct dma_map_ops sbus_dma_ops = { + .alloc_coherent = sbus_alloc_coherent, + .free_coherent = sbus_free_coherent, + .map_page = sbus_map_page, + .unmap_page = sbus_unmap_page, + .map_sg = sbus_map_sg, + .unmap_sg = sbus_unmap_sg, + .sync_sg_for_cpu = sbus_sync_sg_for_cpu, + .sync_sg_for_device = sbus_sync_sg_for_device, +}; + +struct dma_map_ops *dma_ops = &sbus_dma_ops; +EXPORT_SYMBOL(dma_ops); + static int __init sparc_register_ioport(void) { register_proc_sparc_ioport(); @@ -395,7 +421,8 @@ arch_initcall(sparc_register_ioport); /* Allocate and map kernel buffer using consistent mode DMA for a device. * hwdev should be valid struct pci_dev pointer for PCI devices. */ -void *pci_alloc_consistent(struct pci_dev *pdev, size_t len, dma_addr_t *pba) +static void *pci32_alloc_coherent(struct device *dev, size_t len, + dma_addr_t *pba, gfp_t gfp) { unsigned long len_total = (len + PAGE_SIZE-1) & PAGE_MASK; unsigned long va; @@ -439,7 +466,6 @@ void *pci_alloc_consistent(struct pci_dev *pdev, size_t len, dma_addr_t *pba) *pba = virt_to_phys(va); /* equals virt_to_bus (R.I.P.) for us. */ return (void *) res->start; } -EXPORT_SYMBOL(pci_alloc_consistent); /* Free and unmap a consistent DMA buffer. * cpu_addr is what was returned from pci_alloc_consistent, @@ -449,7 +475,8 @@ EXPORT_SYMBOL(pci_alloc_consistent); * References to the memory and mappings associated with cpu_addr/dma_addr * past this call are illegal. */ -void pci_free_consistent(struct pci_dev *pdev, size_t n, void *p, dma_addr_t ba) +static void pci32_free_coherent(struct device *dev, size_t n, void *p, + dma_addr_t ba) { struct resource *res; unsigned long pgp; @@ -481,60 +508,18 @@ void pci_free_consistent(struct pci_dev *pdev, size_t n, void *p, dma_addr_t ba) free_pages(pgp, get_order(n)); } -EXPORT_SYMBOL(pci_free_consistent); - -/* Map a single buffer of the indicated size for DMA in streaming mode. - * The 32-bit bus address to use is returned. - * - * Once the device is given the dma address, the device owns this memory - * until either pci_unmap_single or pci_dma_sync_single_* is performed. - */ -dma_addr_t pci_map_single(struct pci_dev *hwdev, void *ptr, size_t size, - int direction) -{ - BUG_ON(direction == PCI_DMA_NONE); - /* IIep is write-through, not flushing. */ - return virt_to_phys(ptr); -} -EXPORT_SYMBOL(pci_map_single); - -/* Unmap a single streaming mode DMA translation. The dma_addr and size - * must match what was provided for in a previous pci_map_single call. All - * other usages are undefined. - * - * After this call, reads by the cpu to the buffer are guaranteed to see - * whatever the device wrote there. - */ -void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t ba, size_t size, - int direction) -{ - BUG_ON(direction == PCI_DMA_NONE); - if (direction != PCI_DMA_TODEVICE) { - mmu_inval_dma_area((unsigned long)phys_to_virt(ba), - (size + PAGE_SIZE-1) & PAGE_MASK); - } -} -EXPORT_SYMBOL(pci_unmap_single); /* * Same as pci_map_single, but with pages. */ -dma_addr_t pci_map_page(struct pci_dev *hwdev, struct page *page, - unsigned long offset, size_t size, int direction) +static dma_addr_t pci32_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction dir, + struct dma_attrs *attrs) { - BUG_ON(direction == PCI_DMA_NONE); /* IIep is write-through, not flushing. */ return page_to_phys(page) + offset; } -EXPORT_SYMBOL(pci_map_page); - -void pci_unmap_page(struct pci_dev *hwdev, - dma_addr_t dma_address, size_t size, int direction) -{ - BUG_ON(direction == PCI_DMA_NONE); - /* mmu_inval_dma_area XXX */ -} -EXPORT_SYMBOL(pci_unmap_page); /* Map a set of buffers described by scatterlist in streaming * mode for DMA. This is the scather-gather version of the @@ -551,13 +536,13 @@ EXPORT_SYMBOL(pci_unmap_page); * Device ownership issues as mentioned above for pci_map_single are * the same here. */ -int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sgl, int nents, - int direction) +static int pci32_map_sg(struct device *device, struct scatterlist *sgl, + int nents, enum dma_data_direction dir, + struct dma_attrs *attrs) { struct scatterlist *sg; int n; - BUG_ON(direction == PCI_DMA_NONE); /* IIep is write-through, not flushing. */ for_each_sg(sgl, sg, nents, n) { BUG_ON(page_address(sg_page(sg)) == NULL); @@ -566,20 +551,19 @@ int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sgl, int nents, } return nents; } -EXPORT_SYMBOL(pci_map_sg); /* Unmap a set of streaming mode DMA translations. * Again, cpu read rules concerning calls here are the same as for * pci_unmap_single() above. */ -void pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sgl, int nents, - int direction) +static void pci32_unmap_sg(struct device *dev, struct scatterlist *sgl, + int nents, enum dma_data_direction dir, + struct dma_attrs *attrs) { struct scatterlist *sg; int n; - BUG_ON(direction == PCI_DMA_NONE); - if (direction != PCI_DMA_TODEVICE) { + if (dir != PCI_DMA_TODEVICE) { for_each_sg(sgl, sg, nents, n) { BUG_ON(page_address(sg_page(sg)) == NULL); mmu_inval_dma_area( @@ -588,7 +572,6 @@ void pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sgl, int nents, } } } -EXPORT_SYMBOL(pci_unmap_sg); /* Make physical memory consistent for a single * streaming mode DMA translation before or after a transfer. @@ -600,25 +583,23 @@ EXPORT_SYMBOL(pci_unmap_sg); * must first perform a pci_dma_sync_for_device, and then the * device again owns the buffer. */ -void pci_dma_sync_single_for_cpu(struct pci_dev *hwdev, dma_addr_t ba, size_t size, int direction) +static void pci32_sync_single_for_cpu(struct device *dev, dma_addr_t ba, + size_t size, enum dma_data_direction dir) { - BUG_ON(direction == PCI_DMA_NONE); - if (direction != PCI_DMA_TODEVICE) { + if (dir != PCI_DMA_TODEVICE) { mmu_inval_dma_area((unsigned long)phys_to_virt(ba), (size + PAGE_SIZE-1) & PAGE_MASK); } } -EXPORT_SYMBOL(pci_dma_sync_single_for_cpu); -void pci_dma_sync_single_for_device(struct pci_dev *hwdev, dma_addr_t ba, size_t size, int direction) +static void pci32_sync_single_for_device(struct device *dev, dma_addr_t ba, + size_t size, enum dma_data_direction dir) { - BUG_ON(direction == PCI_DMA_NONE); - if (direction != PCI_DMA_TODEVICE) { + if (dir != PCI_DMA_TODEVICE) { mmu_inval_dma_area((unsigned long)phys_to_virt(ba), (size + PAGE_SIZE-1) & PAGE_MASK); } } -EXPORT_SYMBOL(pci_dma_sync_single_for_device); /* Make physical memory consistent for a set of streaming * mode DMA translations after a transfer. @@ -626,13 +607,13 @@ EXPORT_SYMBOL(pci_dma_sync_single_for_device); * The same as pci_dma_sync_single_* but for a scatter-gather list, * same rules and usage. */ -void pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, struct scatterlist *sgl, int nents, int direction) +static void pci32_sync_sg_for_cpu(struct device *dev, struct scatterlist *sgl, + int nents, enum dma_data_direction dir) { struct scatterlist *sg; int n; - BUG_ON(direction == PCI_DMA_NONE); - if (direction != PCI_DMA_TODEVICE) { + if (dir != PCI_DMA_TODEVICE) { for_each_sg(sgl, sg, nents, n) { BUG_ON(page_address(sg_page(sg)) == NULL); mmu_inval_dma_area( @@ -641,15 +622,14 @@ void pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, struct scatterlist *sgl, int } } } -EXPORT_SYMBOL(pci_dma_sync_sg_for_cpu); -void pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sgl, int nents, int direction) +static void pci32_sync_sg_for_device(struct device *device, struct scatterlist *sgl, + int nents, enum dma_data_direction dir) { struct scatterlist *sg; int n; - BUG_ON(direction == PCI_DMA_NONE); - if (direction != PCI_DMA_TODEVICE) { + if (dir != PCI_DMA_TODEVICE) { for_each_sg(sgl, sg, nents, n) { BUG_ON(page_address(sg_page(sg)) == NULL); mmu_inval_dma_area( @@ -658,9 +638,49 @@ void pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sgl, } } } -EXPORT_SYMBOL(pci_dma_sync_sg_for_device); + +struct dma_map_ops pci32_dma_ops = { + .alloc_coherent = pci32_alloc_coherent, + .free_coherent = pci32_free_coherent, + .map_page = pci32_map_page, + .map_sg = pci32_map_sg, + .unmap_sg = pci32_unmap_sg, + .sync_single_for_cpu = pci32_sync_single_for_cpu, + .sync_single_for_device = pci32_sync_single_for_device, + .sync_sg_for_cpu = pci32_sync_sg_for_cpu, + .sync_sg_for_device = pci32_sync_sg_for_device, +}; +EXPORT_SYMBOL(pci32_dma_ops); + #endif /* CONFIG_PCI */ +/* + * Return whether the given PCI device DMA address mask can be + * supported properly. For example, if your device can only drive the + * low 24-bits during PCI bus mastering, then you would pass + * 0x00ffffff as the mask to this function. + */ +int dma_supported(struct device *dev, u64 mask) +{ +#ifdef CONFIG_PCI + if (dev->bus == &pci_bus_type) + return 1; +#endif + return 0; +} +EXPORT_SYMBOL(dma_supported); + +int dma_set_mask(struct device *dev, u64 dma_mask) +{ +#ifdef CONFIG_PCI + if (dev->bus == &pci_bus_type) + return pci_set_dma_mask(to_pci_dev(dev), dma_mask); +#endif + return -EOPNOTSUPP; +} +EXPORT_SYMBOL(dma_set_mask); + + #ifdef CONFIG_PROC_FS static int diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index 57859ad23547..c68648662802 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -1039,7 +1039,7 @@ static void ali_sound_dma_hack(struct pci_dev *pdev, int set_bit) pci_dev_put(ali_isa_bridge); } -int pci_dma_supported(struct pci_dev *pdev, u64 device_mask) +int pci64_dma_supported(struct pci_dev *pdev, u64 device_mask) { u64 dma_addr_mask; diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c index 2485eaa23101..23c33ff9c31e 100644 --- a/arch/sparc/kernel/pci_sun4v.c +++ b/arch/sparc/kernel/pci_sun4v.c @@ -232,7 +232,8 @@ static void dma_4v_free_coherent(struct device *dev, size_t size, void *cpu, static dma_addr_t dma_4v_map_page(struct device *dev, struct page *page, unsigned long offset, size_t sz, - enum dma_data_direction direction) + enum dma_data_direction direction, + struct dma_attrs *attrs) { struct iommu *iommu; unsigned long flags, npages, oaddr; @@ -296,7 +297,8 @@ iommu_map_fail: } static void dma_4v_unmap_page(struct device *dev, dma_addr_t bus_addr, - size_t sz, enum dma_data_direction direction) + size_t sz, enum dma_data_direction direction, + struct dma_attrs *attrs) { struct pci_pbm_info *pbm; struct iommu *iommu; @@ -336,7 +338,8 @@ static void dma_4v_unmap_page(struct device *dev, dma_addr_t bus_addr, } static int dma_4v_map_sg(struct device *dev, struct scatterlist *sglist, - int nelems, enum dma_data_direction direction) + int nelems, enum dma_data_direction direction, + struct dma_attrs *attrs) { struct scatterlist *s, *outs, *segstart; unsigned long flags, handle, prot; @@ -478,7 +481,8 @@ iommu_map_failed: } static void dma_4v_unmap_sg(struct device *dev, struct scatterlist *sglist, - int nelems, enum dma_data_direction direction) + int nelems, enum dma_data_direction direction, + struct dma_attrs *attrs) { struct pci_pbm_info *pbm; struct scatterlist *sg; @@ -521,29 +525,13 @@ static void dma_4v_unmap_sg(struct device *dev, struct scatterlist *sglist, spin_unlock_irqrestore(&iommu->lock, flags); } -static void dma_4v_sync_single_for_cpu(struct device *dev, - dma_addr_t bus_addr, size_t sz, - enum dma_data_direction direction) -{ - /* Nothing to do... */ -} - -static void dma_4v_sync_sg_for_cpu(struct device *dev, - struct scatterlist *sglist, int nelems, - enum dma_data_direction direction) -{ - /* Nothing to do... */ -} - -static const struct dma_ops sun4v_dma_ops = { +static struct dma_map_ops sun4v_dma_ops = { .alloc_coherent = dma_4v_alloc_coherent, .free_coherent = dma_4v_free_coherent, .map_page = dma_4v_map_page, .unmap_page = dma_4v_unmap_page, .map_sg = dma_4v_map_sg, .unmap_sg = dma_4v_unmap_sg, - .sync_single_for_cpu = dma_4v_sync_single_for_cpu, - .sync_sg_for_cpu = dma_4v_sync_sg_for_cpu, }; static void __devinit pci_sun4v_scan_bus(struct pci_pbm_info *pbm, |