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 extern int pcibios_enabled; 69 void pcibios_config_init(void); 70 struct pci_bus *pcibios_scan_root(int bus); 71 72 void pcibios_set_master(struct pci_dev *dev); 73 void pcibios_penalize_isa_irq(int irq, int active); 74 struct irq_routing_table *pcibios_get_irq_routing_table(void); 75 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); 76 77 78 #define HAVE_PCI_MMAP 79 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 80 enum pci_mmap_state mmap_state, 81 int write_combine); 82 83 84 #ifdef CONFIG_PCI 85 extern void early_quirks(void); 86 static inline void pci_dma_burst_advice(struct pci_dev *pdev, 87 enum pci_dma_burst_strategy *strat, 88 unsigned long *strategy_parameter) 89 { 90 *strat = PCI_DMA_BURST_INFINITY; 91 *strategy_parameter = ~0UL; 92 } 93 #else 94 static inline void early_quirks(void) { } 95 #endif 96 97 extern void pci_iommu_alloc(void); 98 99 #ifdef CONFIG_PCI_MSI 100 /* MSI arch specific hooks */ 101 static inline int x86_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) 102 { 103 return x86_msi.setup_msi_irqs(dev, nvec, type); 104 } 105 106 static inline void x86_teardown_msi_irqs(struct pci_dev *dev) 107 { 108 x86_msi.teardown_msi_irqs(dev); 109 } 110 111 static inline void x86_teardown_msi_irq(unsigned int irq) 112 { 113 x86_msi.teardown_msi_irq(irq); 114 } 115 static inline void x86_restore_msi_irqs(struct pci_dev *dev, int irq) 116 { 117 x86_msi.restore_msi_irqs(dev, irq); 118 } 119 #define arch_setup_msi_irqs x86_setup_msi_irqs 120 #define arch_teardown_msi_irqs x86_teardown_msi_irqs 121 #define arch_teardown_msi_irq x86_teardown_msi_irq 122 #define arch_restore_msi_irqs x86_restore_msi_irqs 123 /* implemented in arch/x86/kernel/apic/io_apic. */ 124 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); 125 void native_teardown_msi_irq(unsigned int irq); 126 void native_restore_msi_irqs(struct pci_dev *dev, int irq); 127 /* default to the implementation in drivers/lib/msi.c */ 128 #define HAVE_DEFAULT_MSI_TEARDOWN_IRQS 129 #define HAVE_DEFAULT_MSI_RESTORE_IRQS 130 void default_teardown_msi_irqs(struct pci_dev *dev); 131 void default_restore_msi_irqs(struct pci_dev *dev, int irq); 132 #else 133 #define native_setup_msi_irqs NULL 134 #define native_teardown_msi_irq NULL 135 #define default_teardown_msi_irqs NULL 136 #define default_restore_msi_irqs NULL 137 #endif 138 139 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) 140 141 #endif /* __KERNEL__ */ 142 143 #ifdef CONFIG_X86_64 144 #include <asm/pci_64.h> 145 #endif 146 147 /* implement the pci_ DMA API in terms of the generic device dma_ one */ 148 #include <asm-generic/pci-dma-compat.h> 149 150 /* generic pci stuff */ 151 #include <asm-generic/pci.h> 152 #define PCIBIOS_MAX_MEM_32 0xffffffff 153 154 #ifdef CONFIG_NUMA 155 /* Returns the node based on pci bus */ 156 static inline int __pcibus_to_node(const struct pci_bus *bus) 157 { 158 const struct pci_sysdata *sd = bus->sysdata; 159 160 return sd->node; 161 } 162 163 static inline const struct cpumask * 164 cpumask_of_pcibus(const struct pci_bus *bus) 165 { 166 int node; 167 168 node = __pcibus_to_node(bus); 169 return (node == -1) ? cpu_online_mask : 170 cpumask_of_node(node); 171 } 172 #endif 173 174 struct pci_setup_rom { 175 struct setup_data data; 176 uint16_t vendor; 177 uint16_t devid; 178 uint64_t pcilen; 179 unsigned long segment; 180 unsigned long bus; 181 unsigned long device; 182 unsigned long function; 183 uint8_t romdata[0]; 184 }; 185 186 #endif /* _ASM_X86_PCI_H */ 187