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 struct irq_routing_table *pcibios_get_irq_routing_table(void); 72 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); 73 74 75 #define HAVE_PCI_MMAP 76 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 77 enum pci_mmap_state mmap_state, 78 int write_combine); 79 80 81 #ifdef CONFIG_PCI 82 extern void early_quirks(void); 83 static inline void pci_dma_burst_advice(struct pci_dev *pdev, 84 enum pci_dma_burst_strategy *strat, 85 unsigned long *strategy_parameter) 86 { 87 *strat = PCI_DMA_BURST_INFINITY; 88 *strategy_parameter = ~0UL; 89 } 90 #else 91 static inline void early_quirks(void) { } 92 #endif 93 94 extern void pci_iommu_alloc(void); 95 96 #ifdef CONFIG_PCI_MSI 97 /* implemented in arch/x86/kernel/apic/io_apic. */ 98 struct msi_desc; 99 void native_compose_msi_msg(struct pci_dev *pdev, unsigned int irq, 100 unsigned int dest, struct msi_msg *msg, u8 hpet_id); 101 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); 102 void native_teardown_msi_irq(unsigned int irq); 103 void native_restore_msi_irqs(struct pci_dev *dev); 104 int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, 105 unsigned int irq_base, unsigned int irq_offset); 106 #else 107 #define native_compose_msi_msg NULL 108 #define native_setup_msi_irqs NULL 109 #define native_teardown_msi_irq NULL 110 #endif 111 112 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) 113 114 #endif /* __KERNEL__ */ 115 116 #ifdef CONFIG_X86_64 117 #include <asm/pci_64.h> 118 #endif 119 120 /* implement the pci_ DMA API in terms of the generic device dma_ one */ 121 #include <asm-generic/pci-dma-compat.h> 122 123 /* generic pci stuff */ 124 #include <asm-generic/pci.h> 125 126 #ifdef CONFIG_NUMA 127 /* Returns the node based on pci bus */ 128 static inline int __pcibus_to_node(const struct pci_bus *bus) 129 { 130 const struct pci_sysdata *sd = bus->sysdata; 131 132 return sd->node; 133 } 134 135 static inline const struct cpumask * 136 cpumask_of_pcibus(const struct pci_bus *bus) 137 { 138 int node; 139 140 node = __pcibus_to_node(bus); 141 return (node == -1) ? cpu_online_mask : 142 cpumask_of_node(node); 143 } 144 #endif 145 146 struct pci_setup_rom { 147 struct setup_data data; 148 uint16_t vendor; 149 uint16_t devid; 150 uint64_t pcilen; 151 unsigned long segment; 152 unsigned long bus; 153 unsigned long device; 154 unsigned long function; 155 uint8_t romdata[0]; 156 }; 157 158 #endif /* _ASM_X86_PCI_H */ 159