arch/alpha/include/asm/pci.h

   1 #ifndef __ALPHA_PCI_H
   2 #define __ALPHA_PCI_H
   3
   4 #ifdef __KERNEL__
   5
   6 #include <linux/spinlock.h>
   7 #include <linux/dma-mapping.h>
   8 #include <linux/scatterlist.h>
   9 #include <asm/machvec.h>
  10
  11 /*
  12  * The following structure is used to manage multiple PCI busses.
  13  */
  14
  15 struct pci_dev;
  16 struct pci_bus;
  17 struct resource;
  18 struct pci_iommu_arena;
  19 struct page;
  20
  21 /* A controller.  Used to manage multiple PCI busses.  */
  22
  23 struct pci_controller {
  24         struct pci_controller *next;
  25         struct pci_bus *bus;
  26         struct resource *io_space;
  27         struct resource *mem_space;
  28
  29         /* The following are for reporting to userland.  The invariant is
  30            that if we report a BWX-capable dense memory, we do not report
  31            a sparse memory at all, even if it exists.  */
  32         unsigned long sparse_mem_base;
  33         unsigned long dense_mem_base;
  34         unsigned long sparse_io_base;
  35         unsigned long dense_io_base;
  36
  37         /* This one's for the kernel only.  It's in KSEG somewhere.  */
  38         unsigned long config_space_base;
  39
  40         unsigned int index;
  41         /* For compatibility with current (as of July 2003) pciutils
  42            and XFree86. Eventually will be removed. */
  43         unsigned int need_domain_info;
  44
  45         struct pci_iommu_arena *sg_pci;
  46         struct pci_iommu_arena *sg_isa;
  47
  48         void *sysdata;
  49 };
  50
  51 /* Override the logic in pci_scan_bus for skipping already-configured
  52    bus numbers.  */
  53
  54 #define pcibios_assign_all_busses()     1
  55
  56 #define PCIBIOS_MIN_IO          alpha_mv.min_io_address
  57 #define PCIBIOS_MIN_MEM         alpha_mv.min_mem_address
  58
  59 extern void pcibios_set_master(struct pci_dev *dev);
  60
  61 /* IOMMU controls.  */
  62
  63 /* The PCI address space does not equal the physical memory address space.
  64    The networking and block device layers use this boolean for bounce buffer
  65    decisions.  */
  66 #define PCI_DMA_BUS_IS_PHYS  0
  67
  68 /* TODO: integrate with include/asm-generic/pci.h ? */
  69 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
  70 {
  71         return channel ? 15 : 14;
  72 }
  73
  74 #define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
  75
  76 static inline int pci_proc_domain(struct pci_bus *bus)
  77 {
  78         struct pci_controller *hose = bus->sysdata;
  79         return hose->need_domain_info;
  80 }
  81
  82 #endif /* __KERNEL__ */
  83
  84 /* Values for the `which' argument to sys_pciconfig_iobase.  */
  85 #define IOBASE_HOSE             0
  86 #define IOBASE_SPARSE_MEM       1
  87 #define IOBASE_DENSE_MEM        2
  88 #define IOBASE_SPARSE_IO        3
  89 #define IOBASE_DENSE_IO         4
  90 #define IOBASE_ROOT_BUS         5
  91 #define IOBASE_FROM_HOSE        0x10000
  92
  93 extern struct pci_dev *isa_bridge;
  94
  95 extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
  96                            size_t count);
  97 extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
  98                             size_t count);
  99 extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
 100                                       struct vm_area_struct *vma,
 101                                       enum pci_mmap_state mmap_state);
 102 extern void pci_adjust_legacy_attr(struct pci_bus *bus,
 103                                    enum pci_mmap_state mmap_type);
 104 #define HAVE_PCI_LEGACY 1
 105
 106 extern int pci_create_resource_files(struct pci_dev *dev);
 107 extern void pci_remove_resource_files(struct pci_dev *dev);
 108
 109 #endif /* __ALPHA_PCI_H */