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 <linux/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 #ifdef CONFIG_PCI_MSI_IRQ_DOMAIN 24 void *fwnode; /* IRQ domain for MSI assignment */ 25 #endif 26 }; 27 28 extern int pci_routeirq; 29 extern int noioapicquirk; 30 extern int noioapicreroute; 31 32 #ifdef CONFIG_PCI 33 34 #ifdef CONFIG_PCI_DOMAINS 35 static inline int pci_domain_nr(struct pci_bus *bus) 36 { 37 struct pci_sysdata *sd = bus->sysdata; 38 39 return sd->domain; 40 } 41 42 static inline int pci_proc_domain(struct pci_bus *bus) 43 { 44 return pci_domain_nr(bus); 45 } 46 #endif 47 48 #ifdef CONFIG_PCI_MSI_IRQ_DOMAIN 49 static inline void *_pci_root_bus_fwnode(struct pci_bus *bus) 50 { 51 struct pci_sysdata *sd = bus->sysdata; 52 53 return sd->fwnode; 54 } 55 56 #define pci_root_bus_fwnode _pci_root_bus_fwnode 57 #endif 58 59 /* Can be used to override the logic in pci_scan_bus for skipping 60 already-configured bus numbers - to be used for buggy BIOSes 61 or architectures with incomplete PCI setup by the loader */ 62 63 extern unsigned int pcibios_assign_all_busses(void); 64 extern int pci_legacy_init(void); 65 # ifdef CONFIG_ACPI 66 # define x86_default_pci_init pci_acpi_init 67 # else 68 # define x86_default_pci_init pci_legacy_init 69 # endif 70 #else 71 # define pcibios_assign_all_busses() 0 72 # define x86_default_pci_init NULL 73 #endif 74 75 extern unsigned long pci_mem_start; 76 #define PCIBIOS_MIN_IO 0x1000 77 #define PCIBIOS_MIN_MEM (pci_mem_start) 78 79 #define PCIBIOS_MIN_CARDBUS_IO 0x4000 80 81 extern int pcibios_enabled; 82 void pcibios_config_init(void); 83 void pcibios_scan_root(int bus); 84 85 void pcibios_set_master(struct pci_dev *dev); 86 struct irq_routing_table *pcibios_get_irq_routing_table(void); 87 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); 88 89 90 #define HAVE_PCI_MMAP 91 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 92 enum pci_mmap_state mmap_state, 93 int write_combine); 94 95 96 #ifdef CONFIG_PCI 97 extern void early_quirks(void); 98 #else 99 static inline void early_quirks(void) { } 100 #endif 101 102 extern void pci_iommu_alloc(void); 103 104 #ifdef CONFIG_PCI_MSI 105 /* implemented in arch/x86/kernel/apic/io_apic. */ 106 struct msi_desc; 107 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); 108 void native_teardown_msi_irq(unsigned int irq); 109 void native_restore_msi_irqs(struct pci_dev *dev); 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 /* 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