select HAVE_OPROFILE
select HAVE_SYSCALL_WRAPPERS
select HAVE_PERF_EVENTS
+ select HAVE_DMA_ATTRS
help
The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory,
#ifndef _ALPHA_DMA_MAPPING_H
#define _ALPHA_DMA_MAPPING_H
+#include <linux/dma-attrs.h>
-#ifdef CONFIG_PCI
+extern struct dma_map_ops *dma_ops;
-#include <linux/pci.h>
+static inline struct dma_map_ops *get_dma_ops(struct device *dev)
+{
+ return dma_ops;
+}
-#define dma_map_single(dev, va, size, dir) \
- pci_map_single(alpha_gendev_to_pci(dev), va, size, dir)
-#define dma_unmap_single(dev, addr, size, dir) \
- pci_unmap_single(alpha_gendev_to_pci(dev), addr, size, dir)
-#define dma_alloc_coherent(dev, size, addr, gfp) \
- __pci_alloc_consistent(alpha_gendev_to_pci(dev), size, addr, gfp)
-#define dma_free_coherent(dev, size, va, addr) \
- pci_free_consistent(alpha_gendev_to_pci(dev), size, va, addr)
-#define dma_map_page(dev, page, off, size, dir) \
- pci_map_page(alpha_gendev_to_pci(dev), page, off, size, dir)
-#define dma_unmap_page(dev, addr, size, dir) \
- pci_unmap_page(alpha_gendev_to_pci(dev), addr, size, dir)
-#define dma_map_sg(dev, sg, nents, dir) \
- pci_map_sg(alpha_gendev_to_pci(dev), sg, nents, dir)
-#define dma_unmap_sg(dev, sg, nents, dir) \
- pci_unmap_sg(alpha_gendev_to_pci(dev), sg, nents, dir)
-#define dma_supported(dev, mask) \
- pci_dma_supported(alpha_gendev_to_pci(dev), mask)
-#define dma_mapping_error(dev, addr) \
- pci_dma_mapping_error(alpha_gendev_to_pci(dev), addr)
+#include <asm-generic/dma-mapping-common.h>
-#else /* no PCI - no IOMMU. */
+static inline void *dma_alloc_coherent(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, gfp_t gfp)
+{
+ return get_dma_ops(dev)->alloc_coherent(dev, size, dma_handle, gfp);
+}
-#include <asm/io.h> /* for virt_to_phys() */
+static inline void dma_free_coherent(struct device *dev, size_t size,
+ void *vaddr, dma_addr_t dma_handle)
+{
+ get_dma_ops(dev)->free_coherent(dev, size, vaddr, dma_handle);
+}
-struct scatterlist;
-void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp);
-int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction direction);
+static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+ return get_dma_ops(dev)->mapping_error(dev, dma_addr);
+}
-#define dma_free_coherent(dev, size, va, addr) \
- free_pages((unsigned long)va, get_order(size))
-#define dma_supported(dev, mask) (mask < 0x00ffffffUL ? 0 : 1)
-#define dma_map_single(dev, va, size, dir) virt_to_phys(va)
-#define dma_map_page(dev, page, off, size, dir) (page_to_pa(page) + off)
+static inline int dma_supported(struct device *dev, u64 mask)
+{
+ return get_dma_ops(dev)->dma_supported(dev, mask);
+}
-#define dma_unmap_single(dev, addr, size, dir) ((void)0)
-#define dma_unmap_page(dev, addr, size, dir) ((void)0)
-#define dma_unmap_sg(dev, sg, nents, dir) ((void)0)
-
-#define dma_mapping_error(dev, addr) (0)
-
-#endif /* !CONFIG_PCI */
+static inline int dma_set_mask(struct device *dev, u64 mask)
+{
+ return get_dma_ops(dev)->set_dma_mask(dev, mask);
+}
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
#define dma_is_consistent(d, h) (1)
-int dma_set_mask(struct device *dev, u64 mask);
-
-#define dma_sync_single_for_cpu(dev, addr, size, dir) ((void)0)
-#define dma_sync_single_for_device(dev, addr, size, dir) ((void)0)
-#define dma_sync_sg_for_cpu(dev, sg, nents, dir) ((void)0)
-#define dma_sync_sg_for_device(dev, sg, nents, dir) ((void)0)
#define dma_cache_sync(dev, va, size, dir) ((void)0)
-#define dma_sync_single_range_for_cpu(dev, addr, offset, size, dir) ((void)0)
-#define dma_sync_single_range_for_device(dev, addr, offset, size, dir) ((void)0)
-
#define dma_get_cache_alignment() L1_CACHE_BYTES
#endif /* _ALPHA_DMA_MAPPING_H */
decisions. */
#define PCI_DMA_BUS_IS_PHYS 0
-/* Allocate and map kernel buffer using consistent mode DMA for PCI
- device. Returns non-NULL cpu-view pointer to the buffer if
- successful and sets *DMA_ADDRP to the pci side dma address as well,
- else DMA_ADDRP is undefined. */
-
-extern void *__pci_alloc_consistent(struct pci_dev *, size_t,
- dma_addr_t *, gfp_t);
-static inline void *
-pci_alloc_consistent(struct pci_dev *dev, size_t size, dma_addr_t *dma)
-{
- return __pci_alloc_consistent(dev, size, dma, GFP_ATOMIC);
-}
-
-/* Free and unmap a consistent DMA buffer. CPU_ADDR and DMA_ADDR must
- be values that were returned from pci_alloc_consistent. SIZE must
- be the same as what as passed into pci_alloc_consistent.
- References to the memory and mappings associated with CPU_ADDR or
- DMA_ADDR past this call are illegal. */
-
-extern void pci_free_consistent(struct pci_dev *, size_t, void *, dma_addr_t);
-
-/* Map a single buffer of the indicate size for PCI DMA in streaming mode.
- The 32-bit PCI bus mastering 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_for_cpu is performed. */
-
-extern dma_addr_t pci_map_single(struct pci_dev *, void *, size_t, int);
-
-/* Likewise, but for a page instead of an address. */
-extern dma_addr_t pci_map_page(struct pci_dev *, struct page *,
- unsigned long, size_t, int);
-
-/* Test for pci_map_single or pci_map_page having generated an error. */
-
-static inline int
-pci_dma_mapping_error(struct pci_dev *pdev, dma_addr_t dma_addr)
-{
- return dma_addr == 0;
-}
-
-/* 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. */
-
-extern void pci_unmap_single(struct pci_dev *, dma_addr_t, size_t, int);
-extern void pci_unmap_page(struct pci_dev *, dma_addr_t, size_t, int);
-
-/* Map a set of buffers described by scatterlist in streaming mode for
- PCI DMA. This is the scatter-gather version of the above
- pci_map_single interface. Here the scatter gather list elements
- are each tagged with the appropriate PCI dma address and length.
- They are obtained via sg_dma_{address,length}(SG).
-
- NOTE: An implementation may be able to use a smaller number of DMA
- address/length pairs than there are SG table elements. (for
- example via virtual mapping capabilities) The routine returns the
- number of addr/length pairs actually used, at most nents.
-
- Device ownership issues as mentioned above for pci_map_single are
- the same here. */
-
-extern int pci_map_sg(struct pci_dev *, struct scatterlist *, int, int);
-
-/* Unmap a set of streaming mode DMA translations. Again, cpu read
- rules concerning calls here are the same as for pci_unmap_single()
- above. */
-
-extern void pci_unmap_sg(struct pci_dev *, struct scatterlist *, int, int);
-
-/* Make physical memory consistent for a single streaming mode DMA
- translation after a transfer and device currently has ownership
- of the buffer.
-
- If you perform a pci_map_single() but wish to interrogate the
- buffer using the cpu, yet do not wish to teardown the PCI dma
- mapping, you must call this function before doing so. At the next
- point you give the PCI dma address back to the card, you must first
- perform a pci_dma_sync_for_device, and then the device again owns
- the buffer. */
-
-static inline void
-pci_dma_sync_single_for_cpu(struct pci_dev *dev, dma_addr_t dma_addr,
- long size, int direction)
-{
- /* Nothing to do. */
-}
-
-static inline void
-pci_dma_sync_single_for_device(struct pci_dev *dev, dma_addr_t dma_addr,
- size_t size, int direction)
-{
- /* Nothing to do. */
-}
-
-/* Make physical memory consistent for a set of streaming mode DMA
- translations after a transfer. The same as pci_dma_sync_single_*
- but for a scatter-gather list, same rules and usage. */
-
-static inline void
-pci_dma_sync_sg_for_cpu(struct pci_dev *dev, struct scatterlist *sg,
- int nents, int direction)
-{
- /* Nothing to do. */
-}
-
-static inline void
-pci_dma_sync_sg_for_device(struct pci_dev *dev, struct scatterlist *sg,
- int nents, int direction)
-{
- /* Nothing to do. */
-}
-
-/* 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. */
+#ifdef CONFIG_PCI
-extern int pci_dma_supported(struct pci_dev *hwdev, u64 mask);
+/* implement the pci_ DMA API in terms of the generic device dma_ one */
+#include <asm-generic/pci-dma-compat.h>
-#ifdef CONFIG_PCI
static inline void pci_dma_burst_advice(struct pci_dev *pdev,
enum pci_dma_burst_strategy *strat,
unsigned long *strategy_parameter)
return hose->need_domain_info;
}
-struct pci_dev *alpha_gendev_to_pci(struct device *dev);
-
#endif /* __KERNEL__ */
/* Values for the `which' argument to sys_pciconfig_iobase. */
return -ENODEV;
}
-/* Stubs for the routines in pci_iommu.c: */
-
-void *
-__pci_alloc_consistent(struct pci_dev *pdev, size_t size,
- dma_addr_t *dma_addrp, gfp_t gfp)
-{
- return NULL;
-}
-
-void
-pci_free_consistent(struct pci_dev *pdev, size_t size, void *cpu_addr,
- dma_addr_t dma_addr)
-{
-}
-
-dma_addr_t
-pci_map_single(struct pci_dev *pdev, void *cpu_addr, size_t size,
- int direction)
-{
- return (dma_addr_t) 0;
-}
-
-void
-pci_unmap_single(struct pci_dev *pdev, dma_addr_t dma_addr, size_t size,
- int direction)
-{
-}
-
-int
-pci_map_sg(struct pci_dev *pdev, struct scatterlist *sg, int nents,
- int direction)
-{
- return 0;
-}
-
-void
-pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sg, int nents,
- int direction)
-{
-}
-
-int
-pci_dma_supported(struct pci_dev *hwdev, dma_addr_t mask)
-{
- return 0;
-}
-
-/* Generic DMA mapping functions: */
-
-void *
-dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp)
+static void *alpha_noop_alloc_coherent(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, gfp_t gfp)
{
void *ret;
return ret;
}
-EXPORT_SYMBOL(dma_alloc_coherent);
+static void alpha_noop_free_coherent(struct device *dev, size_t size,
+ void *cpu_addr, dma_addr_t dma_addr)
+{
+ free_pages((unsigned long)cpu_addr, get_order(size));
+}
+
+static dma_addr_t alpha_noop_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs)
+{
+ return page_to_pa(page) + offset;
+}
-int
-dma_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
- enum dma_data_direction direction)
+static int alpha_noop_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
+ enum dma_data_direction dir, struct dma_attrs *attrs)
{
int i;
struct scatterlist *sg;
return nents;
}
-EXPORT_SYMBOL(dma_map_sg);
+static int alpha_noop_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+ return 0;
+}
+
+static int alpha_noop_supported(struct device *dev, u64 mask)
+{
+ return mask < 0x00ffffffUL ? 0 : 1;
+}
-int
-dma_set_mask(struct device *dev, u64 mask)
+static int alpha_noop_set_mask(struct device *dev, u64 mask)
{
if (!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
*dev->dma_mask = mask;
-
return 0;
}
-EXPORT_SYMBOL(dma_set_mask);
+
+struct dma_map_ops alpha_noop_ops = {
+ .alloc_coherent = alpha_noop_alloc_coherent,
+ .free_coherent = alpha_noop_free_coherent,
+ .map_page = alpha_noop_map_page,
+ .map_sg = alpha_noop_map_sg,
+ .mapping_error = alpha_noop_mapping_error,
+ .dma_supported = alpha_noop_supported,
+ .set_dma_mask = alpha_noop_set_mask,
+};
+
+struct dma_map_ops *dma_ops = &alpha_noop_ops;
+EXPORT_SYMBOL(dma_ops);
void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
{
for (i = 0; i < n; ++i)
p[i] = 0;
}
-\f
-/* True if the machine supports DAC addressing, and DEV can
- make use of it given MASK. */
-static int pci_dac_dma_supported(struct pci_dev *hwdev, u64 mask);
+
+/*
+ * True if the machine supports DAC addressing, and DEV can
+ * make use of it given MASK.
+ */
+static int pci_dac_dma_supported(struct pci_dev *dev, u64 mask)
+{
+ dma64_addr_t dac_offset = alpha_mv.pci_dac_offset;
+ int ok = 1;
+
+ /* If this is not set, the machine doesn't support DAC at all. */
+ if (dac_offset == 0)
+ ok = 0;
+
+ /* The device has to be able to address our DAC bit. */
+ if ((dac_offset & dev->dma_mask) != dac_offset)
+ ok = 0;
+
+ /* If both conditions above are met, we are fine. */
+ DBGA("pci_dac_dma_supported %s from %p\n",
+ ok ? "yes" : "no", __builtin_return_address(0));
+
+ return ok;
+}
/* Map a single buffer of the indicated size for PCI DMA in streaming
mode. The 32-bit PCI bus mastering address to use is returned.
return ret;
}
-dma_addr_t
-pci_map_single(struct pci_dev *pdev, void *cpu_addr, size_t size, int dir)
+/* Helper for generic DMA-mapping functions. */
+static struct pci_dev *alpha_gendev_to_pci(struct device *dev)
{
- int dac_allowed;
+ if (dev && dev->bus == &pci_bus_type)
+ return to_pci_dev(dev);
- if (dir == PCI_DMA_NONE)
- BUG();
+ /* Assume that non-PCI devices asking for DMA are either ISA or EISA,
+ BUG() otherwise. */
+ BUG_ON(!isa_bridge);
- dac_allowed = pdev ? pci_dac_dma_supported(pdev, pdev->dma_mask) : 0;
- return pci_map_single_1(pdev, cpu_addr, size, dac_allowed);
+ /* Assume non-busmaster ISA DMA when dma_mask is not set (the ISA
+ bridge is bus master then). */
+ if (!dev || !dev->dma_mask || !*dev->dma_mask)
+ return isa_bridge;
+
+ /* For EISA bus masters, return isa_bridge (it might have smaller
+ dma_mask due to wiring limitations). */
+ if (*dev->dma_mask >= isa_bridge->dma_mask)
+ return isa_bridge;
+
+ /* This assumes ISA bus master with dma_mask 0xffffff. */
+ return NULL;
}
-EXPORT_SYMBOL(pci_map_single);
-dma_addr_t
-pci_map_page(struct pci_dev *pdev, struct page *page, unsigned long offset,
- size_t size, int dir)
+static dma_addr_t alpha_pci_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
+ struct pci_dev *pdev = alpha_gendev_to_pci(dev);
int dac_allowed;
if (dir == PCI_DMA_NONE)
return pci_map_single_1(pdev, (char *)page_address(page) + offset,
size, dac_allowed);
}
-EXPORT_SYMBOL(pci_map_page);
/* Unmap a single streaming mode DMA translation. The DMA_ADDR and
SIZE must match what was provided for in a previous pci_map_single
the cpu to the buffer are guaranteed to see whatever the device
wrote there. */
-void
-pci_unmap_single(struct pci_dev *pdev, dma_addr_t dma_addr, size_t size,
- int direction)
+static void alpha_pci_unmap_page(struct device *dev, dma_addr_t dma_addr,
+ size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
unsigned long flags;
+ struct pci_dev *pdev = alpha_gendev_to_pci(dev);
struct pci_controller *hose = pdev ? pdev->sysdata : pci_isa_hose;
struct pci_iommu_arena *arena;
long dma_ofs, npages;
- if (direction == PCI_DMA_NONE)
+ if (dir == PCI_DMA_NONE)
BUG();
if (dma_addr >= __direct_map_base
DBGA2("pci_unmap_single: sg [%llx,%zx] np %ld from %p\n",
dma_addr, size, npages, __builtin_return_address(0));
}
-EXPORT_SYMBOL(pci_unmap_single);
-
-void
-pci_unmap_page(struct pci_dev *pdev, dma_addr_t dma_addr,
- size_t size, int direction)
-{
- pci_unmap_single(pdev, dma_addr, size, direction);
-}
-EXPORT_SYMBOL(pci_unmap_page);
/* Allocate and map kernel buffer using consistent mode DMA for PCI
device. Returns non-NULL cpu-view pointer to the buffer if
successful and sets *DMA_ADDRP to the pci side dma address as well,
else DMA_ADDRP is undefined. */
-void *
-__pci_alloc_consistent(struct pci_dev *pdev, size_t size,
- dma_addr_t *dma_addrp, gfp_t gfp)
+static void *alpha_pci_alloc_coherent(struct device *dev, size_t size,
+ dma_addr_t *dma_addrp, gfp_t gfp)
{
+ struct pci_dev *pdev = alpha_gendev_to_pci(dev);
void *cpu_addr;
long order = get_order(size);
gfp |= GFP_DMA;
goto try_again;
}
-
+
DBGA2("pci_alloc_consistent: %zx -> [%p,%llx] from %p\n",
size, cpu_addr, *dma_addrp, __builtin_return_address(0));
return cpu_addr;
}
-EXPORT_SYMBOL(__pci_alloc_consistent);
/* Free and unmap a consistent DMA buffer. CPU_ADDR and DMA_ADDR must
be values that were returned from pci_alloc_consistent. SIZE must
References to the memory and mappings associated with CPU_ADDR or
DMA_ADDR past this call are illegal. */
-void
-pci_free_consistent(struct pci_dev *pdev, size_t size, void *cpu_addr,
- dma_addr_t dma_addr)
+static void alpha_pci_free_coherent(struct device *dev, size_t size,
+ void *cpu_addr, dma_addr_t dma_addr)
{
+ struct pci_dev *pdev = alpha_gendev_to_pci(dev);
pci_unmap_single(pdev, dma_addr, size, PCI_DMA_BIDIRECTIONAL);
free_pages((unsigned long)cpu_addr, get_order(size));
DBGA2("pci_free_consistent: [%llx,%zx] from %p\n",
dma_addr, size, __builtin_return_address(0));
}
-EXPORT_SYMBOL(pci_free_consistent);
/* Classify the elements of the scatterlist. Write dma_address
of each element with:
return 1;
}
-int
-pci_map_sg(struct pci_dev *pdev, struct scatterlist *sg, int nents,
- int direction)
+static int alpha_pci_map_sg(struct device *dev, struct scatterlist *sg,
+ int nents, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
+ struct pci_dev *pdev = alpha_gendev_to_pci(dev);
struct scatterlist *start, *end, *out;
struct pci_controller *hose;
struct pci_iommu_arena *arena;
dma_addr_t max_dma;
int dac_allowed;
- struct device *dev;
- if (direction == PCI_DMA_NONE)
+ if (dir == PCI_DMA_NONE)
BUG();
- dac_allowed = pdev ? pci_dac_dma_supported(pdev, pdev->dma_mask) : 0;
-
- dev = pdev ? &pdev->dev : NULL;
+ dac_allowed = dev ? pci_dac_dma_supported(pdev, pdev->dma_mask) : 0;
/* Fast path single entry scatterlists. */
if (nents == 1) {
/* Some allocation failed while mapping the scatterlist
entries. Unmap them now. */
if (out > start)
- pci_unmap_sg(pdev, start, out - start, direction);
+ pci_unmap_sg(pdev, start, out - start, dir);
return 0;
}
-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 *pdev, struct scatterlist *sg, int nents,
- int direction)
+static void alpha_pci_unmap_sg(struct device *dev, struct scatterlist *sg,
+ int nents, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
+ struct pci_dev *pdev = alpha_gendev_to_pci(dev);
unsigned long flags;
struct pci_controller *hose;
struct pci_iommu_arena *arena;
dma_addr_t max_dma;
dma_addr_t fbeg, fend;
- if (direction == PCI_DMA_NONE)
+ if (dir == PCI_DMA_NONE)
BUG();
if (! alpha_mv.mv_pci_tbi)
DBGA("pci_unmap_sg: %ld entries\n", nents - (end - sg));
}
-EXPORT_SYMBOL(pci_unmap_sg);
-
/* Return whether the given PCI device DMA address mask can be
supported properly. */
-int
-pci_dma_supported(struct pci_dev *pdev, u64 mask)
+static int alpha_pci_supported(struct device *dev, u64 mask)
{
+ struct pci_dev *pdev = alpha_gendev_to_pci(dev);
struct pci_controller *hose;
struct pci_iommu_arena *arena;
return 0;
}
-EXPORT_SYMBOL(pci_dma_supported);
\f
/*
return 0;
}
-/* True if the machine supports DAC addressing, and DEV can
- make use of it given MASK. */
-
-static int
-pci_dac_dma_supported(struct pci_dev *dev, u64 mask)
-{
- dma64_addr_t dac_offset = alpha_mv.pci_dac_offset;
- int ok = 1;
-
- /* If this is not set, the machine doesn't support DAC at all. */
- if (dac_offset == 0)
- ok = 0;
-
- /* The device has to be able to address our DAC bit. */
- if ((dac_offset & dev->dma_mask) != dac_offset)
- ok = 0;
-
- /* If both conditions above are met, we are fine. */
- DBGA("pci_dac_dma_supported %s from %p\n",
- ok ? "yes" : "no", __builtin_return_address(0));
-
- return ok;
-}
-
-/* Helper for generic DMA-mapping functions. */
-
-struct pci_dev *
-alpha_gendev_to_pci(struct device *dev)
+static int alpha_pci_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
- if (dev && dev->bus == &pci_bus_type)
- return to_pci_dev(dev);
-
- /* Assume that non-PCI devices asking for DMA are either ISA or EISA,
- BUG() otherwise. */
- BUG_ON(!isa_bridge);
-
- /* Assume non-busmaster ISA DMA when dma_mask is not set (the ISA
- bridge is bus master then). */
- if (!dev || !dev->dma_mask || !*dev->dma_mask)
- return isa_bridge;
-
- /* For EISA bus masters, return isa_bridge (it might have smaller
- dma_mask due to wiring limitations). */
- if (*dev->dma_mask >= isa_bridge->dma_mask)
- return isa_bridge;
-
- /* This assumes ISA bus master with dma_mask 0xffffff. */
- return NULL;
+ return dma_addr == 0;
}
-EXPORT_SYMBOL(alpha_gendev_to_pci);
-int
-dma_set_mask(struct device *dev, u64 mask)
+static int alpha_pci_set_mask(struct device *dev, u64 mask)
{
if (!dev->dma_mask ||
!pci_dma_supported(alpha_gendev_to_pci(dev), mask))
return -EIO;
*dev->dma_mask = mask;
-
return 0;
}
-EXPORT_SYMBOL(dma_set_mask);
+
+struct dma_map_ops alpha_pci_ops = {
+ .alloc_coherent = alpha_pci_alloc_coherent,
+ .free_coherent = alpha_pci_free_coherent,
+ .map_page = alpha_pci_map_page,
+ .unmap_page = alpha_pci_unmap_page,
+ .map_sg = alpha_pci_map_sg,
+ .unmap_sg = alpha_pci_unmap_sg,
+ .mapping_error = alpha_pci_mapping_error,
+ .dma_supported = alpha_pci_supported,
+ .set_dma_mask = alpha_pci_set_mask,
+};
+
+struct dma_map_ops *dma_ops = &alpha_pci_ops;
+EXPORT_SYMBOL(dma_ops);
projects / users / willy / pagecache.git / commitdiff