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 14struct 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}; 24 25extern int pci_routeirq; 26extern int noioapicquirk; 27extern int noioapicreroute; 28 29#ifdef CONFIG_PCI 30 31#ifdef CONFIG_PCI_DOMAINS 32static inline int pci_domain_nr(struct pci_bus *bus) 33{ 34 struct pci_sysdata *sd = bus->sysdata; 35 return sd->domain; 36} 37 38static inline int pci_proc_domain(struct pci_bus *bus) 39{ 40 return pci_domain_nr(bus); 41} 42#endif 43 44/* Can be used to override the logic in pci_scan_bus for skipping 45 already-configured bus numbers - to be used for buggy BIOSes 46 or architectures with incomplete PCI setup by the loader */ 47 48extern unsigned int pcibios_assign_all_busses(void); 49extern int pci_legacy_init(void); 50# ifdef CONFIG_ACPI 51# define x86_default_pci_init pci_acpi_init 52# else 53# define x86_default_pci_init pci_legacy_init 54# endif 55#else 56# define pcibios_assign_all_busses() 0 57# define x86_default_pci_init NULL 58#endif 59 60extern unsigned long pci_mem_start; 61#define PCIBIOS_MIN_IO 0x1000 62#define PCIBIOS_MIN_MEM (pci_mem_start) 63 64#define PCIBIOS_MIN_CARDBUS_IO 0x4000 65 66extern int pcibios_enabled; 67void pcibios_config_init(void); 68void pcibios_scan_root(int bus); 69 70void pcibios_set_master(struct pci_dev *dev); 71struct irq_routing_table *pcibios_get_irq_routing_table(void); 72int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); 73 74 75#define HAVE_PCI_MMAP 76extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 77 enum pci_mmap_state mmap_state, 78 int write_combine); 79 80 81#ifdef CONFIG_PCI 82extern void early_quirks(void); 83static inline void pci_dma_burst_advice(struct pci_dev *pdev, 84 enum pci_dma_burst_strategy *strat, 85 unsigned long *strategy_parameter) 86{ 87 *strat = PCI_DMA_BURST_INFINITY; 88 *strategy_parameter = ~0UL; 89} 90#else 91static inline void early_quirks(void) { } 92#endif 93 94extern void pci_iommu_alloc(void); 95 96#ifdef CONFIG_PCI_MSI 97/* implemented in arch/x86/kernel/apic/io_apic. */ 98struct msi_desc; 99int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); 100void native_teardown_msi_irq(unsigned int irq); 101void native_restore_msi_irqs(struct pci_dev *dev); 102int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, 103 unsigned int irq_base, unsigned int irq_offset); 104#else 105#define native_setup_msi_irqs NULL 106#define native_teardown_msi_irq NULL 107#endif 108 109#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) 110 111#endif /* __KERNEL__ */ 112 113#ifdef CONFIG_X86_64 114#include <asm/pci_64.h> 115#endif 116 117/* implement the pci_ DMA API in terms of the generic device dma_ one */ 118#include <asm-generic/pci-dma-compat.h> 119 120/* generic pci stuff */ 121#include <asm-generic/pci.h> 122 123#ifdef CONFIG_NUMA 124/* Returns the node based on pci bus */ 125static inline int __pcibus_to_node(const struct pci_bus *bus) 126{ 127 const struct pci_sysdata *sd = bus->sysdata; 128 129 return sd->node; 130} 131 132static inline const struct cpumask * 133cpumask_of_pcibus(const struct pci_bus *bus) 134{ 135 int node; 136 137 node = __pcibus_to_node(bus); 138 return (node == -1) ? cpu_online_mask : 139 cpumask_of_node(node); 140} 141#endif 142 143struct pci_setup_rom { 144 struct setup_data data; 145 uint16_t vendor; 146 uint16_t devid; 147 uint64_t pcilen; 148 unsigned long segment; 149 unsigned long bus; 150 unsigned long device; 151 unsigned long function; 152 uint8_t romdata[0]; 153}; 154 155#endif /* _ASM_X86_PCI_H */ 156