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
  14 struct 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  */
  27 extern 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
  35 extern inline void pcibios_set_master(struct pci_dev *dev)
  36 {
  37         /* No special bus mastering setup handling */
  38 }
  39
  40 extern inline void pcibios_penalize_isa_irq(int irq)
  41 {
  42         /* We don't do dynamic PCI IRQ allocation */
  43 }
  44
  45 extern 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  */
  54 extern unsigned long phys_to_bus(unsigned long pa);
  55 extern unsigned long pci_phys_to_bus(unsigned long pa, int busnr);
  56 extern 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 */
  82 static inline int pci_proc_domain(struct pci_bus *bus)
  83 {
  84         return 0;
  85 }
  86
  87 /* Map a range of PCI memory or I/O space for a device into user space */
  88 int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
  89                         enum pci_mmap_state mmap_state, int write_combine);
  90
  91 /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
  92 #define HAVE_PCI_MMAP   1
  93
  94 extern void
  95 pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
  96                         struct resource *res);
  97
  98 extern void pcibios_add_platform_entries(struct pci_dev *dev);
  99
 100 struct file;
 101 extern pgprot_t pci_phys_mem_access_prot(struct file *file,
 102                                          unsigned long offset,
 103                                          unsigned long size,
 104                                          pgprot_t prot);
 105
 106 #endif  /* __KERNEL__ */
 107
 108 #endif /* __PPC_PCI_H */