#endif /* ! CONFIG_NOT_COHERENT_CACHE */
-#ifdef CONFIG_PPC64
-
static inline unsigned long device_to_mask(struct device *dev)
{
if (dev->dma_mask && *dev->dma_mask)
struct dma_attrs *attrs);
int (*dma_supported)(struct device *dev, u64 mask);
int (*set_dma_mask)(struct device *dev, u64 dma_mask);
+ dma_addr_t (*map_page)(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs);
+ void (*unmap_page)(struct device *dev,
+ dma_addr_t dma_address, size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs);
};
+/*
+ * Available generic sets of operations
+ */
+#ifdef CONFIG_PPC64
+extern struct dma_mapping_ops dma_iommu_ops;
+#endif
+extern struct dma_mapping_ops dma_direct_ops;
+
static inline struct dma_mapping_ops *get_dma_ops(struct device *dev)
{
/* We don't handle the NULL dev case for ISA for now. We could
* only ISA DMA device we support is the floppy and we have a hack
* in the floppy driver directly to get a device for us.
*/
- if (unlikely(dev == NULL || dev->archdata.dma_ops == NULL))
+
+ if (unlikely(dev == NULL) || dev->archdata.dma_ops == NULL) {
+#ifdef CONFIG_PPC64
return NULL;
+#else
+ /* Use default on 32-bit if dma_ops is not set up */
+ /* TODO: Long term, we should fix drivers so that dev and
+ * archdata dma_ops are set up for all buses.
+ */
+ return &dma_direct_ops;
+#endif
+ }
+
return dev->archdata.dma_ops;
}
return 0;
}
+/*
+ * TODO: map_/unmap_single will ideally go away, to be completely
+ * replaced by map/unmap_page. Until then, we allow dma_ops to have
+ * one or the other, or both by checking to see if the specific
+ * function requested exists; and if not, falling back on the other set.
+ */
static inline dma_addr_t dma_map_single_attrs(struct device *dev,
void *cpu_addr,
size_t size,
struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
BUG_ON(!dma_ops);
- return dma_ops->map_single(dev, cpu_addr, size, direction, attrs);
+
+ if (dma_ops->map_single)
+ return dma_ops->map_single(dev, cpu_addr, size, direction,
+ attrs);
+
+ return dma_ops->map_page(dev, virt_to_page(cpu_addr),
+ (unsigned long)cpu_addr % PAGE_SIZE, size,
+ direction, attrs);
}
static inline void dma_unmap_single_attrs(struct device *dev,
struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
BUG_ON(!dma_ops);
- dma_ops->unmap_single(dev, dma_addr, size, direction, attrs);
+
+ if (dma_ops->unmap_single) {
+ dma_ops->unmap_single(dev, dma_addr, size, direction, attrs);
+ return;
+ }
+
+ dma_ops->unmap_page(dev, dma_addr, size, direction, attrs);
}
static inline dma_addr_t dma_map_page_attrs(struct device *dev,
struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
BUG_ON(!dma_ops);
+
+ if (dma_ops->map_page)
+ return dma_ops->map_page(dev, page, offset, size, direction,
+ attrs);
+
return dma_ops->map_single(dev, page_address(page) + offset, size,
- direction, attrs);
+ direction, attrs);
}
static inline void dma_unmap_page_attrs(struct device *dev,
struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
BUG_ON(!dma_ops);
+
+ if (dma_ops->unmap_page) {
+ dma_ops->unmap_page(dev, dma_address, size, direction, attrs);
+ return;
+ }
+
dma_ops->unmap_single(dev, dma_address, size, direction, attrs);
}
dma_unmap_sg_attrs(dev, sg, nhwentries, direction, NULL);
}
-/*
- * Available generic sets of operations
- */
-extern struct dma_mapping_ops dma_iommu_ops;
-extern struct dma_mapping_ops dma_direct_ops;
-
-#else /* CONFIG_PPC64 */
-
-#define dma_supported(dev, mask) (1)
-
-static inline int dma_set_mask(struct device *dev, u64 dma_mask)
-{
- if (!dev->dma_mask || !dma_supported(dev, mask))
- return -EIO;
-
- *dev->dma_mask = dma_mask;
-
- return 0;
-}
-
-static inline void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t * dma_handle,
- gfp_t gfp)
-{
-#ifdef CONFIG_NOT_COHERENT_CACHE
- return __dma_alloc_coherent(size, dma_handle, gfp);
-#else
- void *ret;
- /* ignore region specifiers */
- gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
-
- if (dev == NULL || dev->coherent_dma_mask < 0xffffffff)
- gfp |= GFP_DMA;
-
- ret = (void *)__get_free_pages(gfp, get_order(size));
-
- if (ret != NULL) {
- memset(ret, 0, size);
- *dma_handle = virt_to_bus(ret);
- }
-
- return ret;
-#endif
-}
-
-static inline void
-dma_free_coherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle)
-{
-#ifdef CONFIG_NOT_COHERENT_CACHE
- __dma_free_coherent(size, vaddr);
-#else
- free_pages((unsigned long)vaddr, get_order(size));
-#endif
-}
-
-static inline dma_addr_t
-dma_map_single(struct device *dev, void *ptr, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-
- __dma_sync(ptr, size, direction);
-
- return virt_to_bus(ptr);
-}
-
-static inline void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
- size_t size,
- enum dma_data_direction direction)
-{
- /* We do nothing. */
-}
-
-static inline dma_addr_t
-dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-
- __dma_sync_page(page, offset, size, direction);
-
- return page_to_bus(page) + offset;
-}
-
-static inline void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
- size_t size,
- enum dma_data_direction direction)
-{
- /* We do nothing. */
-}
-
-static inline int
-dma_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
- enum dma_data_direction direction)
-{
- struct scatterlist *sg;
- int i;
-
- BUG_ON(direction == DMA_NONE);
-
- for_each_sg(sgl, sg, nents, i) {
- BUG_ON(!sg_page(sg));
- __dma_sync_page(sg_page(sg), sg->offset, sg->length, direction);
- sg->dma_address = page_to_bus(sg_page(sg)) + sg->offset;
- }
-
- return nents;
-}
-
-static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
- int nhwentries,
- enum dma_data_direction direction)
-{
- /* We don't do anything here. */
-}
-
-#endif /* CONFIG_PPC64 */
-
static inline void dma_sync_single_for_cpu(struct device *dev,
dma_addr_t dma_handle, size_t size,
enum dma_data_direction direction)
unsigned long (*tce_get)(struct iommu_table *tbl,
long index);
void (*tce_flush)(struct iommu_table *tbl);
- void (*pci_dma_dev_setup)(struct pci_dev *dev);
- void (*pci_dma_bus_setup)(struct pci_bus *bus);
void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
unsigned long flags);
#endif
#endif /* CONFIG_PPC64 */
+ void (*pci_dma_dev_setup)(struct pci_dev *dev);
+ void (*pci_dma_bus_setup)(struct pci_bus *bus);
+
int (*probe)(void);
void (*setup_arch)(void); /* Optional, may be NULL */
void (*init_early)(void);
return channel ? 15 : 14;
}
+#ifdef CONFIG_PCI
+extern void set_pci_dma_ops(struct dma_mapping_ops *dma_ops);
+extern struct dma_mapping_ops *get_pci_dma_ops(void);
+#else /* CONFIG_PCI */
+#define set_pci_dma_ops(d)
+#define get_pci_dma_ops() NULL
+#endif
+
#ifdef CONFIG_PPC64
/*
#define PCI_DISABLE_MWI
#ifdef CONFIG_PCI
-extern void set_pci_dma_ops(struct dma_mapping_ops *dma_ops);
-extern struct dma_mapping_ops *get_pci_dma_ops(void);
-
static inline void pci_dma_burst_advice(struct pci_dev *pdev,
enum pci_dma_burst_strategy *strat,
unsigned long *strategy_parameter)
*strat = PCI_DMA_BURST_MULTIPLE;
*strategy_parameter = cacheline_size;
}
-#else /* CONFIG_PCI */
-#define set_pci_dma_ops(d)
-#define get_pci_dma_ops() NULL
#endif
#else /* 32-bit */
extra-y += vmlinux.lds
obj-y += time.o prom.o traps.o setup-common.o \
- udbg.o misc.o io.o \
+ udbg.o misc.o io.o dma.o \
misc_$(CONFIG_WORD_SIZE).o
obj-$(CONFIG_PPC32) += entry_32.o setup_32.o
-obj-$(CONFIG_PPC64) += dma.o dma-iommu.o iommu.o
+obj-$(CONFIG_PPC64) += dma-iommu.o iommu.o
obj-$(CONFIG_KGDB) += kgdb.o
obj-$(CONFIG_PPC_MULTIPLATFORM) += prom_init.o
obj-$(CONFIG_MODULES) += ppc_ksyms.o
* This implementation supports a per-device offset that can be applied if
* the address at which memory is visible to devices is not 0. Platform code
* can set archdata.dma_data to an unsigned long holding the offset. By
- * default the offset is zero.
+ * default the offset is PCI_DRAM_OFFSET.
*/
static unsigned long get_dma_direct_offset(struct device *dev)
{
- return (unsigned long)dev->archdata.dma_data;
+ if (dev)
+ return (unsigned long)dev->archdata.dma_data;
+
+ return PCI_DRAM_OFFSET;
}
-static void *dma_direct_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t flag)
+void *dma_direct_alloc_coherent(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, gfp_t flag)
{
+#ifdef CONFIG_NOT_COHERENT_CACHE
+ return __dma_alloc_coherent(size, dma_handle, flag);
+#else
struct page *page;
void *ret;
int node = dev_to_node(dev);
+ /* ignore region specifiers */
+ flag &= ~(__GFP_HIGHMEM);
+
page = alloc_pages_node(node, flag, get_order(size));
if (page == NULL)
return NULL;
*dma_handle = virt_to_abs(ret) + get_dma_direct_offset(dev);
return ret;
+#endif
}
-static void dma_direct_free_coherent(struct device *dev, size_t size,
- void *vaddr, dma_addr_t dma_handle)
+void dma_direct_free_coherent(struct device *dev, size_t size,
+ void *vaddr, dma_addr_t dma_handle)
{
+#ifdef CONFIG_NOT_COHERENT_CACHE
+ __dma_free_coherent(size, vaddr);
+#else
free_pages((unsigned long)vaddr, get_order(size));
-}
-
-static dma_addr_t dma_direct_map_single(struct device *dev, void *ptr,
- size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
-{
- return virt_to_abs(ptr) + get_dma_direct_offset(dev);
-}
-
-static void dma_direct_unmap_single(struct device *dev, dma_addr_t dma_addr,
- size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
-{
+#endif
}
static int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl,
static int dma_direct_dma_supported(struct device *dev, u64 mask)
{
+#ifdef CONFIG_PPC64
/* Could be improved to check for memory though it better be
* done via some global so platforms can set the limit in case
* they have limited DMA windows
*/
return mask >= DMA_32BIT_MASK;
+#else
+ return 1;
+#endif
+}
+
+static inline dma_addr_t dma_direct_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(dir == DMA_NONE);
+ __dma_sync_page(page, offset, size, dir);
+ return page_to_phys(page) + offset + get_dma_direct_offset(dev);
+}
+
+static inline void dma_direct_unmap_page(struct device *dev,
+ dma_addr_t dma_address,
+ size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
+{
}
struct dma_mapping_ops dma_direct_ops = {
.alloc_coherent = dma_direct_alloc_coherent,
.free_coherent = dma_direct_free_coherent,
- .map_single = dma_direct_map_single,
- .unmap_single = dma_direct_unmap_single,
.map_sg = dma_direct_map_sg,
.unmap_sg = dma_direct_unmap_sg,
.dma_supported = dma_direct_dma_supported,
+ .map_page = dma_direct_map_page,
+ .unmap_page = dma_direct_unmap_page,
};
EXPORT_SYMBOL(dma_direct_ops);
/* Default PCI flags is 0 */
unsigned int ppc_pci_flags;
+static struct dma_mapping_ops *pci_dma_ops;
+
+void set_pci_dma_ops(struct dma_mapping_ops *dma_ops)
+{
+ pci_dma_ops = dma_ops;
+}
+
+struct dma_mapping_ops *get_pci_dma_ops(void)
+{
+ return pci_dma_ops;
+}
+EXPORT_SYMBOL(get_pci_dma_ops);
+
+int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
+{
+ return dma_set_mask(&dev->dev, mask);
+}
+
+int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
+{
+ int rc;
+
+ rc = dma_set_mask(&dev->dev, mask);
+ dev->dev.coherent_dma_mask = dev->dma_mask;
+
+ return rc;
+}
+
struct pci_controller *pcibios_alloc_controller(struct device_node *dev)
{
struct pci_controller *phb;
return str;
}
+void __devinit pcibios_setup_new_device(struct pci_dev *dev)
+{
+ struct dev_archdata *sd = &dev->dev.archdata;
+
+ sd->of_node = pci_device_to_OF_node(dev);
+
+ DBG("PCI: device %s OF node: %s\n", pci_name(dev),
+ sd->of_node ? sd->of_node->full_name : "<none>");
+
+ sd->dma_ops = pci_dma_ops;
+#ifdef CONFIG_PPC32
+ sd->dma_data = (void *)PCI_DRAM_OFFSET;
+#endif
+ set_dev_node(&dev->dev, pcibus_to_node(dev->bus));
+
+ if (ppc_md.pci_dma_dev_setup)
+ ppc_md.pci_dma_dev_setup(dev);
+}
+EXPORT_SYMBOL(pcibios_setup_new_device);
+
/*
* Reads the interrupt pin to determine if interrupt is use by card.
* If the interrupt is used, then gets the interrupt line from the
unsigned long io_offset;
struct resource *res;
int i;
+ struct pci_dev *dev;
/* Hookup PHB resources */
io_offset = (unsigned long)hose->io_base_virt - isa_io_base;
bus->resource[i+1] = res;
}
}
+
+ if (ppc_md.pci_dma_bus_setup)
+ ppc_md.pci_dma_bus_setup(bus);
+
+ list_for_each_entry(dev, &bus->devices, bus_list)
+ pcibios_setup_new_device(dev);
}
/* the next one is stolen from the alpha port... */
LIST_HEAD(hose_list);
-static struct dma_mapping_ops *pci_dma_ops;
-
-void set_pci_dma_ops(struct dma_mapping_ops *dma_ops)
-{
- pci_dma_ops = dma_ops;
-}
-
-struct dma_mapping_ops *get_pci_dma_ops(void)
-{
- return pci_dma_ops;
-}
-EXPORT_SYMBOL(get_pci_dma_ops);
-
-
-int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
-{
- return dma_set_mask(&dev->dev, mask);
-}
-
-int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
-{
- int rc;
-
- rc = dma_set_mask(&dev->dev, mask);
- dev->dev.coherent_dma_mask = dev->dma_mask;
-
- return rc;
-}
-
static void fixup_broken_pcnet32(struct pci_dev* dev)
{
if ((dev->class>>8 == PCI_CLASS_NETWORK_ETHERNET)) {
}
EXPORT_SYMBOL_GPL(pcibios_map_io_space);
-void __devinit pcibios_setup_new_device(struct pci_dev *dev)
-{
- struct dev_archdata *sd = &dev->dev.archdata;
-
- sd->of_node = pci_device_to_OF_node(dev);
-
- DBG("PCI: device %s OF node: %s\n", pci_name(dev),
- sd->of_node ? sd->of_node->full_name : "<none>");
-
- sd->dma_ops = pci_dma_ops;
- set_dev_node(&dev->dev, pcibus_to_node(dev->bus));
-
- if (ppc_md.pci_dma_dev_setup)
- ppc_md.pci_dma_dev_setup(dev);
-}
-EXPORT_SYMBOL(pcibios_setup_new_device);
-
void __devinit pcibios_do_bus_setup(struct pci_bus *bus)
{
struct pci_dev *dev;
git.openpandora.org / pandora-kernel.git / commitdiff