1 #ifndef __ALPHA_PCI_H 2 #define __ALPHA_PCI_H 3 4 #ifdef __KERNEL__ 5 6 #include <linux/spinlock.h> 7 #include <linux/dma-mapping.h> 8 #include <asm/scatterlist.h> 9 #include <asm/machvec.h> 10 11 /* 12 * The following structure is used to manage multiple PCI busses. 13 */ 14 15 struct pci_dev; 16 struct pci_bus; 17 struct resource; 18 struct pci_iommu_arena; 19 struct page; 20 21 /* A controller. Used to manage multiple PCI busses. */ 22 23 struct pci_controller { 24 struct pci_controller *next; 25 struct pci_bus *bus; 26 struct resource *io_space; 27 struct resource *mem_space; 28 29 /* The following are for reporting to userland. The invariant is 30 that if we report a BWX-capable dense memory, we do not report 31 a sparse memory at all, even if it exists. */ 32 unsigned long sparse_mem_base; 33 unsigned long dense_mem_base; 34 unsigned long sparse_io_base; 35 unsigned long dense_io_base; 36 37 /* This one's for the kernel only. It's in KSEG somewhere. */ 38 unsigned long config_space_base; 39 40 unsigned int index; 41 /* For compatibility with current (as of July 2003) pciutils 42 and XFree86. Eventually will be removed. */ 43 unsigned int need_domain_info; 44 45 struct pci_iommu_arena *sg_pci; 46 struct pci_iommu_arena *sg_isa; 47 48 void *sysdata; 49 }; 50 51 /* Override the logic in pci_scan_bus for skipping already-configured 52 bus numbers. */ 53 54 #define pcibios_assign_all_busses() 1 55 56 #define PCIBIOS_MIN_IO alpha_mv.min_io_address 57 #define PCIBIOS_MIN_MEM alpha_mv.min_mem_address 58 59 extern void pcibios_set_master(struct pci_dev *dev); 60 61 extern inline void pcibios_penalize_isa_irq(int irq, int active) 62 { 63 /* We don't do dynamic PCI IRQ allocation */ 64 } 65 66 /* IOMMU controls. */ 67 68 /* The PCI address space does not equal the physical memory address space. 69 The networking and block device layers use this boolean for bounce buffer 70 decisions. */ 71 #define PCI_DMA_BUS_IS_PHYS 0 72 73 #ifdef CONFIG_PCI 74 75 /* implement the pci_ DMA API in terms of the generic device dma_ one */ 76 #include <asm-generic/pci-dma-compat.h> 77 78 static inline void pci_dma_burst_advice(struct pci_dev *pdev, 79 enum pci_dma_burst_strategy *strat, 80 unsigned long *strategy_parameter) 81 { 82 unsigned long cacheline_size; 83 u8 byte; 84 85 pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte); 86 if (byte == 0) 87 cacheline_size = 1024; 88 else 89 cacheline_size = (int) byte * 4; 90 91 *strat = PCI_DMA_BURST_BOUNDARY; 92 *strategy_parameter = cacheline_size; 93 } 94 #endif 95 96 /* TODO: integrate with include/asm-generic/pci.h ? */ 97 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) 98 { 99 return channel ? 15 : 14; 100 } 101 102 extern void pcibios_resource_to_bus(struct pci_dev *, struct pci_bus_region *, 103 struct resource *); 104 105 extern void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, 106 struct pci_bus_region *region); 107 108 #define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index 109 110 static inline int pci_proc_domain(struct pci_bus *bus) 111 { 112 struct pci_controller *hose = bus->sysdata; 113 return hose->need_domain_info; 114 } 115 116 #endif /* __KERNEL__ */ 117 118 /* Values for the `which' argument to sys_pciconfig_iobase. */ 119 #define IOBASE_HOSE 0 120 #define IOBASE_SPARSE_MEM 1 121 #define IOBASE_DENSE_MEM 2 122 #define IOBASE_SPARSE_IO 3 123 #define IOBASE_DENSE_IO 4 124 #define IOBASE_ROOT_BUS 5 125 #define IOBASE_FROM_HOSE 0x10000 126 127 extern struct pci_dev *isa_bridge; 128 129 extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val, 130 size_t count); 131 extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val, 132 size_t count); 133 extern int pci_mmap_legacy_page_range(struct pci_bus *bus, 134 struct vm_area_struct *vma, 135 enum pci_mmap_state mmap_state); 136 extern void pci_adjust_legacy_attr(struct pci_bus *bus, 137 enum pci_mmap_state mmap_type); 138 #define HAVE_PCI_LEGACY 1 139 140 extern int pci_create_resource_files(struct pci_dev *dev); 141 extern void pci_remove_resource_files(struct pci_dev *dev); 142 143 #endif /* __ALPHA_PCI_H */ 144