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 /* scan a bus after allocating a pci_sysdata for it */ 30 extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops, 31 int node); 32 extern struct pci_bus *pci_scan_bus_with_sysdata(int busno); 33 34 #ifdef CONFIG_PCI 35 36 #ifdef CONFIG_PCI_DOMAINS 37 static inline int pci_domain_nr(struct pci_bus *bus) 38 { 39 struct pci_sysdata *sd = bus->sysdata; 40 return sd->domain; 41 } 42 43 static inline int pci_proc_domain(struct pci_bus *bus) 44 { 45 return pci_domain_nr(bus); 46 } 47 #endif 48 49 /* Can be used to override the logic in pci_scan_bus for skipping 50 already-configured bus numbers - to be used for buggy BIOSes 51 or architectures with incomplete PCI setup by the loader */ 52 53 extern unsigned int pcibios_assign_all_busses(void); 54 extern int pci_legacy_init(void); 55 # ifdef CONFIG_ACPI 56 # define x86_default_pci_init pci_acpi_init 57 # else 58 # define x86_default_pci_init pci_legacy_init 59 # endif 60 #else 61 # define pcibios_assign_all_busses() 0 62 # define x86_default_pci_init NULL 63 #endif 64 65 extern unsigned long pci_mem_start; 66 #define PCIBIOS_MIN_IO 0x1000 67 #define PCIBIOS_MIN_MEM (pci_mem_start) 68 69 #define PCIBIOS_MIN_CARDBUS_IO 0x4000 70 71 extern int pcibios_enabled; 72 void pcibios_config_init(void); 73 struct pci_bus *pcibios_scan_root(int bus); 74 75 void pcibios_set_master(struct pci_dev *dev); 76 void pcibios_penalize_isa_irq(int irq, int active); 77 struct irq_routing_table *pcibios_get_irq_routing_table(void); 78 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); 79 80 81 #define HAVE_PCI_MMAP 82 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 83 enum pci_mmap_state mmap_state, 84 int write_combine); 85 86 87 #ifdef CONFIG_PCI 88 extern void early_quirks(void); 89 static inline void pci_dma_burst_advice(struct pci_dev *pdev, 90 enum pci_dma_burst_strategy *strat, 91 unsigned long *strategy_parameter) 92 { 93 *strat = PCI_DMA_BURST_INFINITY; 94 *strategy_parameter = ~0UL; 95 } 96 #else 97 static inline void early_quirks(void) { } 98 #endif 99 100 extern void pci_iommu_alloc(void); 101 102 #ifdef CONFIG_PCI_MSI 103 /* implemented in arch/x86/kernel/apic/io_apic. */ 104 struct msi_desc; 105 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); 106 void native_teardown_msi_irq(unsigned int irq); 107 void native_restore_msi_irqs(struct pci_dev *dev, int irq); 108 int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, 109 unsigned int irq_base, unsigned int irq_offset); 110 #else 111 #define native_setup_msi_irqs NULL 112 #define native_teardown_msi_irq NULL 113 #endif 114 115 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) 116 117 #endif /* __KERNEL__ */ 118 119 #ifdef CONFIG_X86_64 120 #include <asm/pci_64.h> 121 #endif 122 123 /* implement the pci_ DMA API in terms of the generic device dma_ one */ 124 #include <asm-generic/pci-dma-compat.h> 125 126 /* generic pci stuff */ 127 #include <asm-generic/pci.h> 128 #define PCIBIOS_MAX_MEM_32 0xffffffff 129 130 #ifdef CONFIG_NUMA 131 /* Returns the node based on pci bus */ 132 static inline int __pcibus_to_node(const struct pci_bus *bus) 133 { 134 const struct pci_sysdata *sd = bus->sysdata; 135 136 return sd->node; 137 } 138 139 static inline const struct cpumask * 140 cpumask_of_pcibus(const struct pci_bus *bus) 141 { 142 int node; 143 144 node = __pcibus_to_node(bus); 145 return (node == -1) ? cpu_online_mask : 146 cpumask_of_node(node); 147 } 148 #endif 149 150 struct pci_setup_rom { 151 struct setup_data data; 152 uint16_t vendor; 153 uint16_t devid; 154 uint64_t pcilen; 155 unsigned long segment; 156 unsigned long bus; 157 unsigned long device; 158 unsigned long function; 159 uint8_t romdata[0]; 160 }; 161 162 #endif /* _ASM_X86_PCI_H */ 163