diff options
Diffstat (limited to 'arch/x86/include/asm/pci.h')
| -rw-r--r-- | arch/x86/include/asm/pci.h | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h new file mode 100644 index 00000000..df75d075 --- /dev/null +++ b/arch/x86/include/asm/pci.h @@ -0,0 +1,174 @@ +#ifndef _ASM_X86_PCI_H +#define _ASM_X86_PCI_H + +#include <linux/mm.h> /* for struct page */ +#include <linux/types.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <asm/scatterlist.h> +#include <asm/io.h> +#include <asm/x86_init.h> + +#ifdef __KERNEL__ + +struct pci_sysdata { + int domain; /* PCI domain */ + int node; /* NUMA node */ +#ifdef CONFIG_X86_64 + void *iommu; /* IOMMU private data */ +#endif +}; + +extern int pci_routeirq; +extern int noioapicquirk; +extern int noioapicreroute; + +/* scan a bus after allocating a pci_sysdata for it */ +extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops, + int node); +extern struct pci_bus *pci_scan_bus_with_sysdata(int busno); + +#ifdef CONFIG_PCI + +#ifdef CONFIG_PCI_DOMAINS +static inline int pci_domain_nr(struct pci_bus *bus) +{ + struct pci_sysdata *sd = bus->sysdata; + return sd->domain; +} + +static inline int pci_proc_domain(struct pci_bus *bus) +{ + return pci_domain_nr(bus); +} +#endif + +/* Can be used to override the logic in pci_scan_bus for skipping + already-configured bus numbers - to be used for buggy BIOSes + or architectures with incomplete PCI setup by the loader */ + +extern unsigned int pcibios_assign_all_busses(void); +extern int pci_legacy_init(void); +# ifdef CONFIG_ACPI +# define x86_default_pci_init pci_acpi_init +# else +# define x86_default_pci_init pci_legacy_init +# endif +#else +# define pcibios_assign_all_busses() 0 +# define x86_default_pci_init NULL +#endif + +extern unsigned long pci_mem_start; +#define PCIBIOS_MIN_IO 0x1000 +#define PCIBIOS_MIN_MEM (pci_mem_start) + +#define PCIBIOS_MIN_CARDBUS_IO 0x4000 + +extern int pcibios_enabled; +void pcibios_config_init(void); +struct pci_bus *pcibios_scan_root(int bus); + +void pcibios_set_master(struct pci_dev *dev); +void pcibios_penalize_isa_irq(int irq, int active); +struct irq_routing_table *pcibios_get_irq_routing_table(void); +int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); + + +#define HAVE_PCI_MMAP +extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, + enum pci_mmap_state mmap_state, + int write_combine); + + +#ifdef CONFIG_PCI +extern void early_quirks(void); +static inline void pci_dma_burst_advice(struct pci_dev *pdev, + enum pci_dma_burst_strategy *strat, + unsigned long *strategy_parameter) +{ + *strat = PCI_DMA_BURST_INFINITY; + *strategy_parameter = ~0UL; +} +#else +static inline void early_quirks(void) { } +#endif + +extern void pci_iommu_alloc(void); + +#ifdef CONFIG_PCI_MSI +/* MSI arch specific hooks */ +static inline int x86_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) +{ + return x86_msi.setup_msi_irqs(dev, nvec, type); +} + +static inline void x86_teardown_msi_irqs(struct pci_dev *dev) +{ + x86_msi.teardown_msi_irqs(dev); +} + +static inline void x86_teardown_msi_irq(unsigned int irq) +{ + x86_msi.teardown_msi_irq(irq); +} +static inline void x86_restore_msi_irqs(struct pci_dev *dev, int irq) +{ + x86_msi.restore_msi_irqs(dev, irq); +} +#define arch_setup_msi_irqs x86_setup_msi_irqs +#define arch_teardown_msi_irqs x86_teardown_msi_irqs +#define arch_teardown_msi_irq x86_teardown_msi_irq +#define arch_restore_msi_irqs x86_restore_msi_irqs +/* implemented in arch/x86/kernel/apic/io_apic. */ +int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); +void native_teardown_msi_irq(unsigned int irq); +void native_restore_msi_irqs(struct pci_dev *dev, int irq); +/* default to the implementation in drivers/lib/msi.c */ +#define HAVE_DEFAULT_MSI_TEARDOWN_IRQS +#define HAVE_DEFAULT_MSI_RESTORE_IRQS +void default_teardown_msi_irqs(struct pci_dev *dev); +void default_restore_msi_irqs(struct pci_dev *dev, int irq); +#else +#define native_setup_msi_irqs NULL +#define native_teardown_msi_irq NULL +#define default_teardown_msi_irqs NULL +#define default_restore_msi_irqs NULL +#endif + +#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) + +#endif /* __KERNEL__ */ + +#ifdef CONFIG_X86_64 +#include "pci_64.h" +#endif + +/* implement the pci_ DMA API in terms of the generic device dma_ one */ +#include <asm-generic/pci-dma-compat.h> + +/* generic pci stuff */ +#include <asm-generic/pci.h> +#define PCIBIOS_MAX_MEM_32 0xffffffff + +#ifdef CONFIG_NUMA +/* Returns the node based on pci bus */ +static inline int __pcibus_to_node(const struct pci_bus *bus) +{ + const struct pci_sysdata *sd = bus->sysdata; + + return sd->node; +} + +static inline const struct cpumask * +cpumask_of_pcibus(const struct pci_bus *bus) +{ + int node; + + node = __pcibus_to_node(bus); + return (node == -1) ? cpu_online_mask : + cpumask_of_node(node); +} +#endif + +#endif /* _ASM_X86_PCI_H */ |