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_ACPI 18 void *acpi; /* ACPI-specific data */ 19 #endif 20 #ifdef CONFIG_X86_64 21 void *iommu; /* IOMMU private data */ 22 #endif 23 }; 24 25 extern int pci_routeirq; 26 extern int noioapicquirk; 27 extern int noioapicreroute; 28 29 /* scan a bus after allocating a pci_sysdata for it */ 30 extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops, 31 int node); 32 extern struct pci_bus *pci_scan_bus_with_sysdata(int busno); 33 34 #ifdef CONFIG_PCI 35 36 #ifdef CONFIG_PCI_DOMAINS 37 static inline int pci_domain_nr(struct pci_bus *bus) 38 { 39 struct pci_sysdata *sd = bus->sysdata; 40 return sd->domain; 41 } 42 43 static inline int pci_proc_domain(struct pci_bus *bus) 44 { 45 return pci_domain_nr(bus); 46 } 47 #endif 48 49 /* Can be used to override the logic in pci_scan_bus for skipping 50 already-configured bus numbers - to be used for buggy BIOSes 51 or architectures with incomplete PCI setup by the loader */ 52 53 extern unsigned int pcibios_assign_all_busses(void); 54 extern int pci_legacy_init(void); 55 # ifdef CONFIG_ACPI 56 # define x86_default_pci_init pci_acpi_init 57 # else 58 # define x86_default_pci_init pci_legacy_init 59 # endif 60 #else 61 # define pcibios_assign_all_busses() 0 62 # define x86_default_pci_init NULL 63 #endif 64 65 extern unsigned long pci_mem_start; 66 #define PCIBIOS_MIN_IO 0x1000 67 #define PCIBIOS_MIN_MEM (pci_mem_start) 68 69 #define PCIBIOS_MIN_CARDBUS_IO 0x4000 70 71 extern int pcibios_enabled; 72 void pcibios_config_init(void); 73 struct pci_bus *pcibios_scan_root(int bus); 74 75 void pcibios_set_master(struct pci_dev *dev); 76 void pcibios_penalize_isa_irq(int irq, int active); 77 struct irq_routing_table *pcibios_get_irq_routing_table(void); 78 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); 79 80 81 #define HAVE_PCI_MMAP 82 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 83 enum pci_mmap_state mmap_state, 84 int write_combine); 85 86 87 #ifdef CONFIG_PCI 88 extern void early_quirks(void); 89 static inline void pci_dma_burst_advice(struct pci_dev *pdev, 90 enum pci_dma_burst_strategy *strat, 91 unsigned long *strategy_parameter) 92 { 93 *strat = PCI_DMA_BURST_INFINITY; 94 *strategy_parameter = ~0UL; 95 } 96 #else 97 static inline void early_quirks(void) { } 98 #endif 99 100 extern void pci_iommu_alloc(void); 101 102 #ifdef CONFIG_PCI_MSI 103 /* MSI arch specific hooks */ 104 static inline int x86_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) 105 { 106 return x86_msi.setup_msi_irqs(dev, nvec, type); 107 } 108 109 static inline void x86_teardown_msi_irqs(struct pci_dev *dev) 110 { 111 x86_msi.teardown_msi_irqs(dev); 112 } 113 114 static inline void x86_teardown_msi_irq(unsigned int irq) 115 { 116 x86_msi.teardown_msi_irq(irq); 117 } 118 static inline void x86_restore_msi_irqs(struct pci_dev *dev, int irq) 119 { 120 x86_msi.restore_msi_irqs(dev, irq); 121 } 122 #define arch_setup_msi_irqs x86_setup_msi_irqs 123 #define arch_teardown_msi_irqs x86_teardown_msi_irqs 124 #define arch_teardown_msi_irq x86_teardown_msi_irq 125 #define arch_restore_msi_irqs x86_restore_msi_irqs 126 /* implemented in arch/x86/kernel/apic/io_apic. */ 127 struct msi_desc; 128 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); 129 void native_teardown_msi_irq(unsigned int irq); 130 void native_restore_msi_irqs(struct pci_dev *dev, int irq); 131 int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, 132 unsigned int irq_base, unsigned int irq_offset); 133 /* default to the implementation in drivers/lib/msi.c */ 134 #define HAVE_DEFAULT_MSI_TEARDOWN_IRQS 135 #define HAVE_DEFAULT_MSI_RESTORE_IRQS 136 void default_teardown_msi_irqs(struct pci_dev *dev); 137 void default_restore_msi_irqs(struct pci_dev *dev, int irq); 138 #else 139 #define native_setup_msi_irqs NULL 140 #define native_teardown_msi_irq NULL 141 #define default_teardown_msi_irqs NULL 142 #define default_restore_msi_irqs NULL 143 #endif 144 145 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) 146 147 #endif /* __KERNEL__ */ 148 149 #ifdef CONFIG_X86_64 150 #include <asm/pci_64.h> 151 #endif 152 153 /* implement the pci_ DMA API in terms of the generic device dma_ one */ 154 #include <asm-generic/pci-dma-compat.h> 155 156 /* generic pci stuff */ 157 #include <asm-generic/pci.h> 158 #define PCIBIOS_MAX_MEM_32 0xffffffff 159 160 #ifdef CONFIG_NUMA 161 /* Returns the node based on pci bus */ 162 static inline int __pcibus_to_node(const struct pci_bus *bus) 163 { 164 const struct pci_sysdata *sd = bus->sysdata; 165 166 return sd->node; 167 } 168 169 static inline const struct cpumask * 170 cpumask_of_pcibus(const struct pci_bus *bus) 171 { 172 int node; 173 174 node = __pcibus_to_node(bus); 175 return (node == -1) ? cpu_online_mask : 176 cpumask_of_node(node); 177 } 178 #endif 179 180 struct pci_setup_rom { 181 struct setup_data data; 182 uint16_t vendor; 183 uint16_t devid; 184 uint64_t pcilen; 185 unsigned long segment; 186 unsigned long bus; 187 unsigned long device; 188 unsigned long function; 189 uint8_t romdata[0]; 190 }; 191 192 #endif /* _ASM_X86_PCI_H */ 193