1 #ifndef _ASM_IA64_PCI_H
2 #define _ASM_IA64_PCI_H
5 #include <linux/slab.h>
6 #include <linux/spinlock.h>
7 #include <linux/string.h>
8 #include <linux/types.h>
11 #include <asm/scatterlist.h>
12 #include <asm/hw_irq.h>
15 * Can be used to override the logic in pci_scan_bus for skipping already-configured bus
16 * numbers - to be used for buggy BIOSes or architectures with incomplete PCI setup by the
19 #define pcibios_assign_all_busses() 0
20 #define pcibios_scan_all_fns(a, b) 0
22 #define PCIBIOS_MIN_IO 0x1000
23 #define PCIBIOS_MIN_MEM 0x10000000
25 void pcibios_config_init(void);
30 * PCI_DMA_BUS_IS_PHYS should be set to 1 if there is _necessarily_ a direct
31 * correspondence between device bus addresses and CPU physical addresses.
32 * Platforms with a hardware I/O MMU _must_ turn this off to suppress the
33 * bounce buffer handling code in the block and network device layers.
34 * Platforms with separate bus address spaces _must_ turn this off and provide
35 * a device DMA mapping implementation that takes care of the necessary
36 * address translation.
38 * For now, the ia64 platforms which may have separate/multiple bus address
39 * spaces all have I/O MMUs which support the merging of physically
40 * discontiguous buffers, so we can use that as the sole factor to determine
41 * the setting of PCI_DMA_BUS_IS_PHYS.
43 extern unsigned long ia64_max_iommu_merge_mask;
44 #define PCI_DMA_BUS_IS_PHYS (ia64_max_iommu_merge_mask == ~0UL)
47 pcibios_set_master (struct pci_dev *dev)
49 /* No special bus mastering setup handling */
53 pcibios_penalize_isa_irq (int irq, int active)
55 /* We don't do dynamic PCI IRQ allocation */
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) \
63 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
65 #define pci_unmap_addr(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) \
71 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
72 (((PTR)->LEN_NAME) = (VAL))
75 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
76 enum pci_dma_burst_strategy *strat,
77 unsigned long *strategy_parameter)
79 unsigned long cacheline_size;
82 pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
84 cacheline_size = 1024;
86 cacheline_size = (int) byte * 4;
88 *strat = PCI_DMA_BURST_MULTIPLE;
89 *strategy_parameter = cacheline_size;
94 extern int pci_mmap_page_range (struct pci_dev *dev, struct vm_area_struct *vma,
95 enum pci_mmap_state mmap_state, int write_combine);
96 #define HAVE_PCI_LEGACY
97 extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
98 struct vm_area_struct *vma,
99 enum pci_mmap_state mmap_state);
101 #define pci_get_legacy_mem platform_pci_get_legacy_mem
102 #define pci_legacy_read platform_pci_legacy_read
103 #define pci_legacy_write platform_pci_legacy_write
106 struct resource resource;
110 struct pci_controller {
114 int node; /* nearest node with memory or -1 for global allocation */
116 unsigned int windows;
117 struct pci_window *window;
122 #define PCI_CONTROLLER(busdev) ((struct pci_controller *) busdev->sysdata)
123 #define pci_domain_nr(busdev) (PCI_CONTROLLER(busdev)->segment)
125 extern struct pci_ops pci_root_ops;
127 static inline int pci_proc_domain(struct pci_bus *bus)
129 return (pci_domain_nr(bus) != 0);
132 extern void pcibios_resource_to_bus(struct pci_dev *dev,
133 struct pci_bus_region *region, struct resource *res);
135 extern void pcibios_bus_to_resource(struct pci_dev *dev,
136 struct resource *res, struct pci_bus_region *region);
138 static inline struct resource *
139 pcibios_select_root(struct pci_dev *pdev, struct resource *res)
141 struct resource *root = NULL;
143 if (res->flags & IORESOURCE_IO)
144 root = &ioport_resource;
145 if (res->flags & IORESOURCE_MEM)
146 root = &iomem_resource;
151 #define pcibios_scan_all_fns(a, b) 0
153 #define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
154 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
156 return channel ? isa_irq_to_vector(15) : isa_irq_to_vector(14);
160 extern void pci_iommu_alloc(void);
162 #endif /* _ASM_IA64_PCI_H */