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 11 #ifdef __KERNEL__ 12 13 struct pci_sysdata { 14 int domain; /* PCI domain */ 15 int node; /* NUMA node */ 16 #ifdef CONFIG_X86_64 17 void *iommu; /* IOMMU private data */ 18 #endif 19 }; 20 21 extern int pci_routeirq; 22 extern int noioapicquirk; 23 extern int noioapicreroute; 24 25 /* scan a bus after allocating a pci_sysdata for it */ 26 extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops, 27 int node); 28 extern struct pci_bus *pci_scan_bus_with_sysdata(int busno); 29 30 static inline int pci_domain_nr(struct pci_bus *bus) 31 { 32 struct pci_sysdata *sd = bus->sysdata; 33 return sd->domain; 34 } 35 36 static inline int pci_proc_domain(struct pci_bus *bus) 37 { 38 return pci_domain_nr(bus); 39 } 40 41 42 /* Can be used to override the logic in pci_scan_bus for skipping 43 already-configured bus numbers - to be used for buggy BIOSes 44 or architectures with incomplete PCI setup by the loader */ 45 46 #ifdef CONFIG_PCI 47 extern unsigned int pcibios_assign_all_busses(void); 48 #else 49 #define pcibios_assign_all_busses() 0 50 #endif 51 #define pcibios_scan_all_fns(a, b) 0 52 53 extern unsigned long pci_mem_start; 54 #define PCIBIOS_MIN_IO 0x1000 55 #define PCIBIOS_MIN_MEM (pci_mem_start) 56 57 #define PCIBIOS_MIN_CARDBUS_IO 0x4000 58 59 void pcibios_config_init(void); 60 struct pci_bus *pcibios_scan_root(int bus); 61 62 void pcibios_set_master(struct pci_dev *dev); 63 void pcibios_penalize_isa_irq(int irq, int active); 64 struct irq_routing_table *pcibios_get_irq_routing_table(void); 65 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); 66 67 68 #define HAVE_PCI_MMAP 69 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 70 enum pci_mmap_state mmap_state, 71 int write_combine); 72 73 74 #ifdef CONFIG_PCI 75 extern void early_quirks(void); 76 static inline void pci_dma_burst_advice(struct pci_dev *pdev, 77 enum pci_dma_burst_strategy *strat, 78 unsigned long *strategy_parameter) 79 { 80 *strat = PCI_DMA_BURST_INFINITY; 81 *strategy_parameter = ~0UL; 82 } 83 #else 84 static inline void early_quirks(void) { } 85 #endif 86 87 extern void pci_iommu_alloc(void); 88 89 /* MSI arch hook */ 90 #define arch_setup_msi_irqs arch_setup_msi_irqs 91 92 #endif /* __KERNEL__ */ 93 94 #ifdef CONFIG_X86_32 95 # include "pci_32.h" 96 #else 97 # include "pci_64.h" 98 #endif 99 100 /* implement the pci_ DMA API in terms of the generic device dma_ one */ 101 #include <asm-generic/pci-dma-compat.h> 102 103 /* generic pci stuff */ 104 #include <asm-generic/pci.h> 105 106 #ifdef CONFIG_NUMA 107 /* Returns the node based on pci bus */ 108 static inline int __pcibus_to_node(const struct pci_bus *bus) 109 { 110 const struct pci_sysdata *sd = bus->sysdata; 111 112 return sd->node; 113 } 114 115 static inline cpumask_t __pcibus_to_cpumask(struct pci_bus *bus) 116 { 117 return node_to_cpumask(__pcibus_to_node(bus)); 118 } 119 120 static inline const struct cpumask * 121 cpumask_of_pcibus(const struct pci_bus *bus) 122 { 123 return cpumask_of_node(__pcibus_to_node(bus)); 124 } 125 #endif 126 127 #endif /* _ASM_X86_PCI_H */ 128