1 #ifndef _ASM_X86_PCI_H 2 #define _ASM_X86_PCI_H 3 4 #include <linux/mm.h> /* for struct page */ 5 #include <linux/types.h> 6 #include <linux/slab.h> 7 #include <linux/string.h> 8 #include <asm/scatterlist.h> 9 #include <asm/io.h> 10 11 #ifdef __KERNEL__ 12 13 struct pci_sysdata { 14 int domain; /* PCI domain */ 15 int node; /* NUMA node */ 16 #ifdef CONFIG_X86_64 17 void *iommu; /* IOMMU private data */ 18 #endif 19 }; 20 21 extern int pci_routeirq; 22 extern int noioapicquirk; 23 extern int noioapicreroute; 24 25 /* scan a bus after allocating a pci_sysdata for it */ 26 extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops, 27 int node); 28 extern struct pci_bus *pci_scan_bus_with_sysdata(int busno); 29 30 static inline int pci_domain_nr(struct pci_bus *bus) 31 { 32 struct pci_sysdata *sd = bus->sysdata; 33 return sd->domain; 34 } 35 36 static inline int pci_proc_domain(struct pci_bus *bus) 37 { 38 return pci_domain_nr(bus); 39 } 40 41 42 /* Can be used to override the logic in pci_scan_bus for skipping 43 already-configured bus numbers - to be used for buggy BIOSes 44 or architectures with incomplete PCI setup by the loader */ 45 46 #ifdef CONFIG_PCI 47 extern unsigned int pcibios_assign_all_busses(void); 48 #else 49 #define pcibios_assign_all_busses() 0 50 #endif 51 52 extern unsigned long pci_mem_start; 53 #define PCIBIOS_MIN_IO 0x1000 54 #define PCIBIOS_MIN_MEM (pci_mem_start) 55 56 #define PCIBIOS_MIN_CARDBUS_IO 0x4000 57 58 void pcibios_config_init(void); 59 struct pci_bus *pcibios_scan_root(int bus); 60 61 void pcibios_set_master(struct pci_dev *dev); 62 void pcibios_penalize_isa_irq(int irq, int active); 63 struct irq_routing_table *pcibios_get_irq_routing_table(void); 64 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); 65 66 67 #define HAVE_PCI_MMAP 68 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 69 enum pci_mmap_state mmap_state, 70 int write_combine); 71 72 73 #ifdef CONFIG_PCI 74 extern void early_quirks(void); 75 static inline void pci_dma_burst_advice(struct pci_dev *pdev, 76 enum pci_dma_burst_strategy *strat, 77 unsigned long *strategy_parameter) 78 { 79 *strat = PCI_DMA_BURST_INFINITY; 80 *strategy_parameter = ~0UL; 81 } 82 #else 83 static inline void early_quirks(void) { } 84 #endif 85 86 extern void pci_iommu_alloc(void); 87 88 /* MSI arch hook */ 89 #define arch_setup_msi_irqs arch_setup_msi_irqs 90 91 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) 92 93 #if defined(CONFIG_X86_64) || defined(CONFIG_DMAR) || defined(CONFIG_DMA_API_DEBUG) 94 95 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \ 96 dma_addr_t ADDR_NAME; 97 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \ 98 __u32 LEN_NAME; 99 #define pci_unmap_addr(PTR, ADDR_NAME) \ 100 ((PTR)->ADDR_NAME) 101 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \ 102 (((PTR)->ADDR_NAME) = (VAL)) 103 #define pci_unmap_len(PTR, LEN_NAME) \ 104 ((PTR)->LEN_NAME) 105 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \ 106 (((PTR)->LEN_NAME) = (VAL)) 107 108 #else 109 110 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) dma_addr_t ADDR_NAME[0]; 111 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) unsigned LEN_NAME[0]; 112 #define pci_unmap_addr(PTR, ADDR_NAME) sizeof((PTR)->ADDR_NAME) 113 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \ 114 do { break; } while (pci_unmap_addr(PTR, ADDR_NAME)) 115 #define pci_unmap_len(PTR, LEN_NAME) sizeof((PTR)->LEN_NAME) 116 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \ 117 do { break; } while (pci_unmap_len(PTR, LEN_NAME)) 118 119 #endif 120 121 #endif /* __KERNEL__ */ 122 123 #ifdef CONFIG_X86_64 124 #include "pci_64.h" 125 #endif 126 127 /* implement the pci_ DMA API in terms of the generic device dma_ one */ 128 #include <asm-generic/pci-dma-compat.h> 129 130 /* generic pci stuff */ 131 #include <asm-generic/pci.h> 132 #define PCIBIOS_MAX_MEM_32 0xffffffff 133 134 #ifdef CONFIG_NUMA 135 /* Returns the node based on pci bus */ 136 static inline int __pcibus_to_node(const struct pci_bus *bus) 137 { 138 const struct pci_sysdata *sd = bus->sysdata; 139 140 return sd->node; 141 } 142 143 static inline const struct cpumask * 144 cpumask_of_pcibus(const struct pci_bus *bus) 145 { 146 int node; 147 148 node = __pcibus_to_node(bus); 149 return (node == -1) ? cpu_online_mask : 150 cpumask_of_node(node); 151 } 152 #endif 153 154 #endif /* _ASM_X86_PCI_H */ 155