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 #include <asm/x86_init.h> 11 12 #ifdef __KERNEL__ 13 14 struct pci_sysdata { 15 int domain; /* PCI domain */ 16 int node; /* NUMA node */ 17 #ifdef CONFIG_ACPI 18 struct acpi_device *companion; /* ACPI companion device */ 19 #endif 20 #ifdef CONFIG_X86_64 21 void *iommu; /* IOMMU private data */ 22 #endif 23 }; 24 25 extern int pci_routeirq; 26 extern int noioapicquirk; 27 extern int noioapicreroute; 28 29 #ifdef CONFIG_PCI 30 31 #ifdef CONFIG_PCI_DOMAINS 32 static inline int pci_domain_nr(struct pci_bus *bus) 33 { 34 struct pci_sysdata *sd = bus->sysdata; 35 return sd->domain; 36 } 37 38 static inline int pci_proc_domain(struct pci_bus *bus) 39 { 40 return pci_domain_nr(bus); 41 } 42 #endif 43 44 /* Can be used to override the logic in pci_scan_bus for skipping 45 already-configured bus numbers - to be used for buggy BIOSes 46 or architectures with incomplete PCI setup by the loader */ 47 48 extern unsigned int pcibios_assign_all_busses(void); 49 extern int pci_legacy_init(void); 50 # ifdef CONFIG_ACPI 51 # define x86_default_pci_init pci_acpi_init 52 # else 53 # define x86_default_pci_init pci_legacy_init 54 # endif 55 #else 56 # define pcibios_assign_all_busses() 0 57 # define x86_default_pci_init NULL 58 #endif 59 60 extern unsigned long pci_mem_start; 61 #define PCIBIOS_MIN_IO 0x1000 62 #define PCIBIOS_MIN_MEM (pci_mem_start) 63 64 #define PCIBIOS_MIN_CARDBUS_IO 0x4000 65 66 extern int pcibios_enabled; 67 void pcibios_config_init(void); 68 void pcibios_scan_root(int bus); 69 70 void pcibios_set_master(struct pci_dev *dev); 71 void pcibios_penalize_isa_irq(int irq, int active); 72 struct irq_routing_table *pcibios_get_irq_routing_table(void); 73 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); 74 75 76 #define HAVE_PCI_MMAP 77 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 78 enum pci_mmap_state mmap_state, 79 int write_combine); 80 81 82 #ifdef CONFIG_PCI 83 extern void early_quirks(void); 84 static inline void pci_dma_burst_advice(struct pci_dev *pdev, 85 enum pci_dma_burst_strategy *strat, 86 unsigned long *strategy_parameter) 87 { 88 *strat = PCI_DMA_BURST_INFINITY; 89 *strategy_parameter = ~0UL; 90 } 91 #else 92 static inline void early_quirks(void) { } 93 #endif 94 95 extern void pci_iommu_alloc(void); 96 97 #ifdef CONFIG_PCI_MSI 98 /* implemented in arch/x86/kernel/apic/io_apic. */ 99 struct msi_desc; 100 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); 101 void native_teardown_msi_irq(unsigned int irq); 102 void native_restore_msi_irqs(struct pci_dev *dev); 103 int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, 104 unsigned int irq_base, unsigned int irq_offset); 105 #else 106 #define native_setup_msi_irqs NULL 107 #define native_teardown_msi_irq NULL 108 #endif 109 110 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) 111 112 #endif /* __KERNEL__ */ 113 114 #ifdef CONFIG_X86_64 115 #include <asm/pci_64.h> 116 #endif 117 118 /* implement the pci_ DMA API in terms of the generic device dma_ one */ 119 #include <asm-generic/pci-dma-compat.h> 120 121 /* generic pci stuff */ 122 #include <asm-generic/pci.h> 123 124 #ifdef CONFIG_NUMA 125 /* Returns the node based on pci bus */ 126 static inline int __pcibus_to_node(const struct pci_bus *bus) 127 { 128 const struct pci_sysdata *sd = bus->sysdata; 129 130 return sd->node; 131 } 132 133 static inline const struct cpumask * 134 cpumask_of_pcibus(const struct pci_bus *bus) 135 { 136 int node; 137 138 node = __pcibus_to_node(bus); 139 return (node == -1) ? cpu_online_mask : 140 cpumask_of_node(node); 141 } 142 #endif 143 144 struct pci_setup_rom { 145 struct setup_data data; 146 uint16_t vendor; 147 uint16_t devid; 148 uint64_t pcilen; 149 unsigned long segment; 150 unsigned long bus; 151 unsigned long device; 152 unsigned long function; 153 uint8_t romdata[0]; 154 }; 155 156 #endif /* _ASM_X86_PCI_H */ 157