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_X86_64 18 void *iommu; /* IOMMU private data */ 19 #endif 20 }; 21 22 extern int pci_routeirq; 23 extern int noioapicquirk; 24 extern int noioapicreroute; 25 26 /* scan a bus after allocating a pci_sysdata for it */ 27 extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops, 28 int node); 29 extern struct pci_bus *pci_scan_bus_with_sysdata(int busno); 30 31 #ifdef CONFIG_PCI 32 33 #ifdef CONFIG_PCI_DOMAINS 34 static inline int pci_domain_nr(struct pci_bus *bus) 35 { 36 struct pci_sysdata *sd = bus->sysdata; 37 return sd->domain; 38 } 39 40 static inline int pci_proc_domain(struct pci_bus *bus) 41 { 42 return pci_domain_nr(bus); 43 } 44 #endif 45 46 /* Can be used to override the logic in pci_scan_bus for skipping 47 already-configured bus numbers - to be used for buggy BIOSes 48 or architectures with incomplete PCI setup by the loader */ 49 50 extern unsigned int pcibios_assign_all_busses(void); 51 extern int pci_legacy_init(void); 52 # ifdef CONFIG_ACPI 53 # define x86_default_pci_init pci_acpi_init 54 # else 55 # define x86_default_pci_init pci_legacy_init 56 # endif 57 #else 58 # define pcibios_assign_all_busses() 0 59 # define x86_default_pci_init NULL 60 #endif 61 62 extern unsigned long pci_mem_start; 63 #define PCIBIOS_MIN_IO 0x1000 64 #define PCIBIOS_MIN_MEM (pci_mem_start) 65 66 #define PCIBIOS_MIN_CARDBUS_IO 0x4000 67 68 void pcibios_config_init(void); 69 struct pci_bus *pcibios_scan_root(int bus); 70 71 void pcibios_set_master(struct pci_dev *dev); 72 void pcibios_penalize_isa_irq(int irq, int active); 73 struct irq_routing_table *pcibios_get_irq_routing_table(void); 74 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); 75 76 77 #define HAVE_PCI_MMAP 78 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 79 enum pci_mmap_state mmap_state, 80 int write_combine); 81 82 83 #ifdef CONFIG_PCI 84 extern void early_quirks(void); 85 static inline void pci_dma_burst_advice(struct pci_dev *pdev, 86 enum pci_dma_burst_strategy *strat, 87 unsigned long *strategy_parameter) 88 { 89 *strat = PCI_DMA_BURST_INFINITY; 90 *strategy_parameter = ~0UL; 91 } 92 #else 93 static inline void early_quirks(void) { } 94 #endif 95 96 extern void pci_iommu_alloc(void); 97 98 #ifdef CONFIG_PCI_MSI 99 /* MSI arch specific hooks */ 100 static inline int x86_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) 101 { 102 return x86_msi.setup_msi_irqs(dev, nvec, type); 103 } 104 105 static inline void x86_teardown_msi_irqs(struct pci_dev *dev) 106 { 107 x86_msi.teardown_msi_irqs(dev); 108 } 109 110 static inline void x86_teardown_msi_irq(unsigned int irq) 111 { 112 x86_msi.teardown_msi_irq(irq); 113 } 114 #define arch_setup_msi_irqs x86_setup_msi_irqs 115 #define arch_teardown_msi_irqs x86_teardown_msi_irqs 116 #define arch_teardown_msi_irq x86_teardown_msi_irq 117 /* implemented in arch/x86/kernel/apic/io_apic. */ 118 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); 119 void native_teardown_msi_irq(unsigned int irq); 120 /* default to the implementation in drivers/lib/msi.c */ 121 #define HAVE_DEFAULT_MSI_TEARDOWN_IRQS 122 void default_teardown_msi_irqs(struct pci_dev *dev); 123 #else 124 #define native_setup_msi_irqs NULL 125 #define native_teardown_msi_irq NULL 126 #define default_teardown_msi_irqs NULL 127 #endif 128 129 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) 130 131 #endif /* __KERNEL__ */ 132 133 #ifdef CONFIG_X86_64 134 #include "pci_64.h" 135 #endif 136 137 void dma32_reserve_bootmem(void); 138 139 /* implement the pci_ DMA API in terms of the generic device dma_ one */ 140 #include <asm-generic/pci-dma-compat.h> 141 142 /* generic pci stuff */ 143 #include <asm-generic/pci.h> 144 #define PCIBIOS_MAX_MEM_32 0xffffffff 145 146 #ifdef CONFIG_NUMA 147 /* Returns the node based on pci bus */ 148 static inline int __pcibus_to_node(const struct pci_bus *bus) 149 { 150 const struct pci_sysdata *sd = bus->sysdata; 151 152 return sd->node; 153 } 154 155 static inline const struct cpumask * 156 cpumask_of_pcibus(const struct pci_bus *bus) 157 { 158 int node; 159 160 node = __pcibus_to_node(bus); 161 return (node == -1) ? cpu_online_mask : 162 cpumask_of_node(node); 163 } 164 #endif 165 166 #endif /* _ASM_X86_PCI_H */ 167