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 extern int pci_legacy_init(void); 49 # ifdef CONFIG_ACPI 50 # define x86_default_pci_init pci_acpi_init 51 # else 52 # define x86_default_pci_init pci_legacy_init 53 # endif 54 #else 55 # define pcibios_assign_all_busses() 0 56 # define x86_default_pci_init NULL 57 #endif 58 59 extern unsigned long pci_mem_start; 60 #define PCIBIOS_MIN_IO 0x1000 61 #define PCIBIOS_MIN_MEM (pci_mem_start) 62 63 #define PCIBIOS_MIN_CARDBUS_IO 0x4000 64 65 void pcibios_config_init(void); 66 struct pci_bus *pcibios_scan_root(int bus); 67 68 void pcibios_set_master(struct pci_dev *dev); 69 void pcibios_penalize_isa_irq(int irq, int active); 70 struct irq_routing_table *pcibios_get_irq_routing_table(void); 71 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); 72 73 74 #define HAVE_PCI_MMAP 75 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 76 enum pci_mmap_state mmap_state, 77 int write_combine); 78 79 80 #ifdef CONFIG_PCI 81 extern void early_quirks(void); 82 static inline void pci_dma_burst_advice(struct pci_dev *pdev, 83 enum pci_dma_burst_strategy *strat, 84 unsigned long *strategy_parameter) 85 { 86 *strat = PCI_DMA_BURST_INFINITY; 87 *strategy_parameter = ~0UL; 88 } 89 #else 90 static inline void early_quirks(void) { } 91 #endif 92 93 extern void pci_iommu_alloc(void); 94 95 /* MSI arch hook */ 96 #define arch_setup_msi_irqs arch_setup_msi_irqs 97 98 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) 99 100 #endif /* __KERNEL__ */ 101 102 #ifdef CONFIG_X86_64 103 #include "pci_64.h" 104 #endif 105 106 void dma32_reserve_bootmem(void); 107 108 /* implement the pci_ DMA API in terms of the generic device dma_ one */ 109 #include <asm-generic/pci-dma-compat.h> 110 111 /* generic pci stuff */ 112 #include <asm-generic/pci.h> 113 #define PCIBIOS_MAX_MEM_32 0xffffffff 114 115 #ifdef CONFIG_NUMA 116 /* Returns the node based on pci bus */ 117 static inline int __pcibus_to_node(const struct pci_bus *bus) 118 { 119 const struct pci_sysdata *sd = bus->sysdata; 120 121 return sd->node; 122 } 123 124 static inline const struct cpumask * 125 cpumask_of_pcibus(const struct pci_bus *bus) 126 { 127 int node; 128 129 node = __pcibus_to_node(bus); 130 return (node == -1) ? cpu_online_mask : 131 cpumask_of_node(node); 132 } 133 #endif 134 135 #endif /* _ASM_X86_PCI_H */ 136