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_buses;
  28
  29 #define pcibios_assign_all_busses()     (pci_assign_all_buses)
  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, int active)
  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 #ifdef CONFIG_PCI
  73 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
  74                                         enum pci_dma_burst_strategy *strat,
  75                                         unsigned long *strategy_parameter)
  76 {
  77         *strat = PCI_DMA_BURST_INFINITY;
  78         *strategy_parameter = ~0UL;
  79 }
  80 #endif
  81
  82 /*
  83  * At present there are very few 32-bit PPC machines that can have
  84  * memory above the 4GB point, and we don't support that.
  85  */
  86 #define pci_dac_dma_supported(pci_dev, mask)    (0)
  87
  88 /* Return the index of the PCI controller for device PDEV. */
  89 #define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
  90
  91 /* Set the name of the bus as it appears in /proc/bus/pci */
  92 static inline int pci_proc_domain(struct pci_bus *bus)
  93 {
  94         return 0;
  95 }
  96
  97 /* Map a range of PCI memory or I/O space for a device into user space */
  98 int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
  99                         enum pci_mmap_state mmap_state, int write_combine);
 100
 101 /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
 102 #define HAVE_PCI_MMAP   1
 103
 104 extern void
 105 pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
 106                         struct resource *res);
 107
 108 extern void
 109 pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
 110                         struct pci_bus_region *region);
 111
 112 static inline struct resource *
 113 pcibios_select_root(struct pci_dev *pdev, struct resource *res)
 114 {
 115         struct resource *root = NULL;
 116
 117         if (res->flags & IORESOURCE_IO)
 118                 root = &ioport_resource;
 119         if (res->flags & IORESOURCE_MEM)
 120                 root = &iomem_resource;
 121
 122         return root;
 123 }
 124
 125 extern void pcibios_add_platform_entries(struct pci_dev *dev);
 126
 127 struct file;
 128 extern pgprot_t pci_phys_mem_access_prot(struct file *file,
 129                                          unsigned long pfn,
 130                                          unsigned long size,
 131                                          pgprot_t prot);
 132
 133 #define HAVE_ARCH_PCI_RESOURCE_TO_USER
 134 extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
 135                                  const struct resource *rsrc,
 136                                  u64 *start, u64 *end);
 137
 138
 139 #endif  /* __KERNEL__ */
 140
 141 #endif /* __PPC_PCI_H */