[PATCH] ARM: Fix VFP to use do_div()
[linux-2.6/verdex.git] / include / asm-ia64 / pci.h
blob0c4c5d801d3f8d3893ca02057d960f3fadc54c96
1 #ifndef _ASM_IA64_PCI_H
2 #define _ASM_IA64_PCI_H
4 #include <linux/mm.h>
5 #include <linux/slab.h>
6 #include <linux/spinlock.h>
7 #include <linux/string.h>
8 #include <linux/types.h>
10 #include <asm/io.h>
11 #include <asm/scatterlist.h>
14 * Can be used to override the logic in pci_scan_bus for skipping already-configured bus
15 * numbers - to be used for buggy BIOSes or architectures with incomplete PCI setup by the
16 * loader.
18 #define pcibios_assign_all_busses() 0
19 #define pcibios_scan_all_fns(a, b) 0
21 #define PCIBIOS_MIN_IO 0x1000
22 #define PCIBIOS_MIN_MEM 0x10000000
24 void pcibios_config_init(void);
26 struct pci_dev;
29 * PCI_DMA_BUS_IS_PHYS should be set to 1 if there is _necessarily_ a direct correspondence
30 * between device bus addresses and CPU physical addresses. Platforms with a hardware I/O
31 * MMU _must_ turn this off to suppress the bounce buffer handling code in the block and
32 * network device layers. Platforms with separate bus address spaces _must_ turn this off
33 * and provide a device DMA mapping implementation that takes care of the necessary
34 * address translation.
36 * For now, the ia64 platforms which may have separate/multiple bus address spaces all
37 * have I/O MMUs which support the merging of physically discontiguous buffers, so we can
38 * use that as the sole factor to determine the setting of PCI_DMA_BUS_IS_PHYS.
40 extern unsigned long ia64_max_iommu_merge_mask;
41 #define PCI_DMA_BUS_IS_PHYS (ia64_max_iommu_merge_mask == ~0UL)
43 static inline void
44 pcibios_set_master (struct pci_dev *dev)
46 /* No special bus mastering setup handling */
49 static inline void
50 pcibios_penalize_isa_irq (int irq)
52 /* We don't do dynamic PCI IRQ allocation */
55 #define HAVE_ARCH_PCI_MWI 1
56 extern int pcibios_prep_mwi (struct pci_dev *);
58 #include <asm-generic/pci-dma-compat.h>
60 /* pci_unmap_{single,page} is not a nop, thus... */
61 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
62 dma_addr_t ADDR_NAME;
63 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
64 __u32 LEN_NAME;
65 #define pci_unmap_addr(PTR, ADDR_NAME) \
66 ((PTR)->ADDR_NAME)
67 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
68 (((PTR)->ADDR_NAME) = (VAL))
69 #define pci_unmap_len(PTR, LEN_NAME) \
70 ((PTR)->LEN_NAME)
71 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
72 (((PTR)->LEN_NAME) = (VAL))
74 /* The ia64 platform always supports 64-bit addressing. */
75 #define pci_dac_dma_supported(pci_dev, mask) (1)
76 #define pci_dac_page_to_dma(dev,pg,off,dir) ((dma_addr_t) page_to_bus(pg) + (off))
77 #define pci_dac_dma_to_page(dev,dma_addr) (virt_to_page(bus_to_virt(dma_addr)))
78 #define pci_dac_dma_to_offset(dev,dma_addr) offset_in_page(dma_addr)
79 #define pci_dac_dma_sync_single_for_cpu(dev,dma_addr,len,dir) do { } while (0)
80 #define pci_dac_dma_sync_single_for_device(dev,dma_addr,len,dir) do { mb(); } while (0)
82 #define sg_dma_len(sg) ((sg)->dma_length)
83 #define sg_dma_address(sg) ((sg)->dma_address)
85 #ifdef CONFIG_PCI
86 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
87 enum pci_dma_burst_strategy *strat,
88 unsigned long *strategy_parameter)
90 unsigned long cacheline_size;
91 u8 byte;
93 pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
94 if (byte == 0)
95 cacheline_size = 1024;
96 else
97 cacheline_size = (int) byte * 4;
99 *strat = PCI_DMA_BURST_MULTIPLE;
100 *strategy_parameter = cacheline_size;
102 #endif
104 #define HAVE_PCI_MMAP
105 extern int pci_mmap_page_range (struct pci_dev *dev, struct vm_area_struct *vma,
106 enum pci_mmap_state mmap_state, int write_combine);
107 #define HAVE_PCI_LEGACY
108 extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
109 struct vm_area_struct *vma);
110 extern ssize_t pci_read_legacy_io(struct kobject *kobj, char *buf, loff_t off,
111 size_t count);
112 extern ssize_t pci_write_legacy_io(struct kobject *kobj, char *buf, loff_t off,
113 size_t count);
114 extern int pci_mmap_legacy_mem(struct kobject *kobj,
115 struct bin_attribute *attr,
116 struct vm_area_struct *vma);
118 #define pci_get_legacy_mem platform_pci_get_legacy_mem
119 #define pci_legacy_read platform_pci_legacy_read
120 #define pci_legacy_write platform_pci_legacy_write
122 struct pci_window {
123 struct resource resource;
124 u64 offset;
127 struct pci_controller {
128 void *acpi_handle;
129 void *iommu;
130 int segment;
132 unsigned int windows;
133 struct pci_window *window;
135 void *platform_data;
138 #define PCI_CONTROLLER(busdev) ((struct pci_controller *) busdev->sysdata)
139 #define pci_domain_nr(busdev) (PCI_CONTROLLER(busdev)->segment)
141 extern struct pci_ops pci_root_ops;
143 static inline int pci_proc_domain(struct pci_bus *bus)
145 return (pci_domain_nr(bus) != 0);
148 static inline void pcibios_add_platform_entries(struct pci_dev *dev)
152 extern void pcibios_resource_to_bus(struct pci_dev *dev,
153 struct pci_bus_region *region, struct resource *res);
155 extern void pcibios_bus_to_resource(struct pci_dev *dev,
156 struct resource *res, struct pci_bus_region *region);
158 #define pcibios_scan_all_fns(a, b) 0
160 #endif /* _ASM_IA64_PCI_H */