LXR linux-bk/include/asm-ppc/pci.h

   1#ifndef __PPC_PCI_H
   2#define __PPC_PCI_H
   3#ifdef __KERNEL__
   4
   5#include <linux/types.h>
   6#include <linux/slab.h>
   7#include <linux/string.h>
   8#include <linux/mm.h>
   9#include <asm/scatterlist.h>
  10#include <asm/io.h>
  11#include <asm/pci-bridge.h>
  12#include <asm-generic/pci-dma-compat.h>
  13
  14struct pci_dev;
  15
  16/* Values for the `which' argument to sys_pciconfig_iobase syscall.  */
  17#define IOBASE_BRIDGE_NUMBER    0
  18#define IOBASE_MEMORY           1
  19#define IOBASE_IO               2
  20#define IOBASE_ISA_IO           3
  21#define IOBASE_ISA_MEM          4
  22
  23/*
  24 * Set this to 1 if you want the kernel to re-assign all PCI
  25 * bus numbers
  26 */
  27extern int pci_assign_all_busses;
  28
  29#define pcibios_assign_all_busses()     (pci_assign_all_busses)
  30#define pcibios_scan_all_fns(a, b)      0
  31
  32#define PCIBIOS_MIN_IO          0x1000
  33#define PCIBIOS_MIN_MEM         0x10000000
  34
  35extern inline void pcibios_set_master(struct pci_dev *dev)
  36{
  37        /* No special bus mastering setup handling */
  38}
  39
  40extern inline void pcibios_penalize_isa_irq(int irq)
  41{
  42        /* We don't do dynamic PCI IRQ allocation */
  43}
  44
  45extern unsigned long pci_resource_to_bus(struct pci_dev *pdev, struct resource *res);
  46
  47/*
  48 * The PCI bus bridge can translate addresses issued by the processor(s)
  49 * into a different address on the PCI bus.  On 32-bit cpus, we assume
  50 * this mapping is 1-1, but on 64-bit systems it often isn't.
  51 *
  52 * Obsolete ! Drivers should now use pci_resource_to_bus
  53 */
  54extern unsigned long phys_to_bus(unsigned long pa);
  55extern unsigned long pci_phys_to_bus(unsigned long pa, int busnr);
  56extern unsigned long pci_bus_to_phys(unsigned int ba, int busnr);
  57
  58/* The PCI address space does equal the physical memory
  59 * address space.  The networking and block device layers use
  60 * this boolean for bounce buffer decisions.
  61 */
  62#define PCI_DMA_BUS_IS_PHYS     (1)
  63
  64/* pci_unmap_{page,single} is a nop so... */
  65#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
  66#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
  67#define pci_unmap_addr(PTR, ADDR_NAME)          (0)
  68#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
  69#define pci_unmap_len(PTR, LEN_NAME)            (0)
  70#define pci_unmap_len_set(PTR, LEN_NAME, VAL)   do { } while (0)
  71
  72/*
  73 * At present there are very few 32-bit PPC machines that can have
  74 * memory above the 4GB point, and we don't support that.
  75 */
  76#define pci_dac_dma_supported(pci_dev, mask)    (0)
  77
  78/* Return the index of the PCI controller for device PDEV. */
  79#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
  80
  81/* Set the name of the bus as it appears in /proc/bus/pci */
  82static inline int pci_name_bus(char *name, struct pci_bus *bus)
  83{
  84        sprintf(name, "%02x", bus->number);
  85        return 0;
  86}
  87
  88/* Map a range of PCI memory or I/O space for a device into user space */
  89int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
  90                        enum pci_mmap_state mmap_state, int write_combine);
  91
  92/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
  93#define HAVE_PCI_MMAP   1
  94
  95extern void
  96pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
  97                        struct resource *res);
  98
  99extern void pcibios_add_platform_entries(struct pci_dev *dev);
 100
 101#endif  /* __KERNEL__ */
 102
 103#endif /* __PPC_PCI_H */
 104