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 13struct 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 21extern int pci_routeirq; 22extern int noioapicquirk; 23extern int noioapicreroute; 24 25/* scan a bus after allocating a pci_sysdata for it */ 26extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops, 27 int node); 28extern struct pci_bus *pci_scan_bus_with_sysdata(int busno); 29 30#ifdef CONFIG_PCI 31 32#ifdef CONFIG_PCI_DOMAINS 33static inline int pci_domain_nr(struct pci_bus *bus) 34{ 35 struct pci_sysdata *sd = bus->sysdata; 36 return sd->domain; 37} 38 39static inline int pci_proc_domain(struct pci_bus *bus) 40{ 41 return pci_domain_nr(bus); 42} 43#endif 44 45/* Can be used to override the logic in pci_scan_bus for skipping 46 already-configured bus numbers - to be used for buggy BIOSes 47 or architectures with incomplete PCI setup by the loader */ 48 49extern unsigned int pcibios_assign_all_busses(void); 50extern int pci_legacy_init(void); 51# ifdef CONFIG_ACPI 52# define x86_default_pci_init pci_acpi_init 53# else 54# define x86_default_pci_init pci_legacy_init 55# endif 56#else 57# define pcibios_assign_all_busses() 0 58# define x86_default_pci_init NULL 59#endif 60 61extern unsigned long pci_mem_start; 62#define PCIBIOS_MIN_IO 0x1000 63#define PCIBIOS_MIN_MEM (pci_mem_start) 64 65#define PCIBIOS_MIN_CARDBUS_IO 0x4000 66 67void pcibios_config_init(void); 68struct pci_bus *pcibios_scan_root(int bus); 69 70void pcibios_set_master(struct pci_dev *dev); 71void pcibios_penalize_isa_irq(int irq, int active); 72struct irq_routing_table *pcibios_get_irq_routing_table(void); 73int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); 74 75 76#define HAVE_PCI_MMAP 77extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 78 enum pci_mmap_state mmap_state, 79 int write_combine); 80 81 82#ifdef CONFIG_PCI 83extern void early_quirks(void); 84static inline void pci_dma_burst_advice(struct pci_dev *pdev, 85 enum pci_dma_burst_strategy *strat, 86 unsigned long *strategy_parameter) 87{ 88 *strat = PCI_DMA_BURST_INFINITY; 89 *strategy_parameter = ~0UL; 90} 91#else 92static inline void early_quirks(void) { } 93#endif 94 95extern void pci_iommu_alloc(void); 96 97/* MSI arch hook */ 98#define arch_setup_msi_irqs arch_setup_msi_irqs 99 100#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) 101 102#endif /* __KERNEL__ */ 103 104#ifdef CONFIG_X86_64 105#include "pci_64.h" 106#endif 107 108void dma32_reserve_bootmem(void); 109 110/* implement the pci_ DMA API in terms of the generic device dma_ one */ 111#include <asm-generic/pci-dma-compat.h> 112 113/* generic pci stuff */ 114#include <asm-generic/pci.h> 115#define PCIBIOS_MAX_MEM_32 0xffffffff 116 117#ifdef CONFIG_NUMA 118/* Returns the node based on pci bus */ 119static inline int __pcibus_to_node(const struct pci_bus *bus) 120{ 121 const struct pci_sysdata *sd = bus->sysdata; 122 123 return sd->node; 124} 125 126static inline const struct cpumask * 127cpumask_of_pcibus(const struct pci_bus *bus) 128{ 129 int node; 130 131 node = __pcibus_to_node(bus); 132 return (node == -1) ? cpu_online_mask : 133 cpumask_of_node(node); 134} 135#endif 136 137#endif /* _ASM_X86_PCI_H */ 138