include/asm-mn10300/pci.h

   1 /* MN10300 PCI definitions
   2  *
   3  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public Licence
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the Licence, or (at your option) any later version.
  10  */
  11 #ifndef _ASM_PCI_H
  12 #define _ASM_PCI_H
  13
  14 #ifdef __KERNEL__
  15 #include <linux/mm.h>           /* for struct page */
  16
  17 #if 0
  18 #define __pcbdebug(FMT, ADDR, ...) \
  19         printk(KERN_DEBUG "PCIBRIDGE[%08x]: "FMT"\n", \
  20                (u32)(ADDR), ##__VA_ARGS__)
  21
  22 #define __pcidebug(FMT, BUS, DEVFN, WHERE,...)          \
  23 do {                                                    \
  24         printk(KERN_DEBUG "PCI[%02x:%02x.%x + %02x]: "FMT"\n",  \
  25                (BUS)->number,                                   \
  26                PCI_SLOT(DEVFN),                                 \
  27                PCI_FUNC(DEVFN),                                 \
  28                (u32)(WHERE), ##__VA_ARGS__);                    \
  29 } while (0)
  30
  31 #else
  32 #define __pcbdebug(FMT, ADDR, ...)              do {} while (0)
  33 #define __pcidebug(FMT, BUS, DEVFN, WHERE, ...) do {} while (0)
  34 #endif
  35
  36 /* Can be used to override the logic in pci_scan_bus for skipping
  37  * already-configured bus numbers - to be used for buggy BIOSes or
  38  * architectures with incomplete PCI setup by the loader */
  39
  40 #ifdef CONFIG_PCI
  41 #define pcibios_assign_all_busses()     1
  42 extern void unit_pci_init(void);
  43 #else
  44 #define pcibios_assign_all_busses()     0
  45 #endif
  46
  47 extern unsigned long pci_mem_start;
  48 #define PCIBIOS_MIN_IO          0xBE000004
  49 #define PCIBIOS_MIN_MEM         0xB8000000
  50
  51 void pcibios_set_master(struct pci_dev *dev);
  52 void pcibios_penalize_isa_irq(int irq);
  53
  54 /* Dynamic DMA mapping stuff.
  55  * i386 has everything mapped statically.
  56  */
  57
  58 #include <linux/types.h>
  59 #include <linux/slab.h>
  60 #include <asm/scatterlist.h>
  61 #include <linux/string.h>
  62 #include <linux/mm.h>
  63 #include <asm/io.h>
  64
  65 struct pci_dev;
  66
  67 /* The PCI address space does equal the physical memory
  68  * address space.  The networking and block device layers use
  69  * this boolean for bounce buffer decisions.
  70  */
  71 #define PCI_DMA_BUS_IS_PHYS     (1)
  72
  73
  74 /* This is always fine. */
  75 #define pci_dac_dma_supported(pci_dev, mask)    (0)
  76
  77 /*
  78  * These macros should be used after a pci_map_sg call has been done
  79  * to get bus addresses of each of the SG entries and their lengths.
  80  * You should only work with the number of sg entries pci_map_sg
  81  * returns.
  82  */
  83 #define sg_dma_address(sg)      ((sg)->dma_address)
  84 #define sg_dma_len(sg)          ((sg)->length)
  85
  86 /* Return the index of the PCI controller for device. */
  87 static inline int pci_controller_num(struct pci_dev *dev)
  88 {
  89         return 0;
  90 }
  91
  92 #define HAVE_PCI_MMAP
  93 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
  94                                enum pci_mmap_state mmap_state,
  95                                int write_combine);
  96
  97 #endif /* __KERNEL__ */
  98
  99 /* implement the pci_ DMA API in terms of the generic device dma_ one */
 100 #include <asm-generic/pci-dma-compat.h>
 101
 102 /**
 103  * pcibios_resource_to_bus - convert resource to PCI bus address
 104  * @dev: device which owns this resource
 105  * @region: converted bus-centric region (start,end)
 106  * @res: resource to convert
 107  *
 108  * Convert a resource to a PCI device bus address or bus window.
 109  */
 110 extern void pcibios_resource_to_bus(struct pci_dev *dev,
 111                                     struct pci_bus_region *region,
 112                                     struct resource *res);
 113
 114 extern void pcibios_bus_to_resource(struct pci_dev *dev,
 115                                     struct resource *res,
 116                                     struct pci_bus_region *region);
 117
 118 static inline struct resource *
 119 pcibios_select_root(struct pci_dev *pdev, struct resource *res)
 120 {
 121         struct resource *root = NULL;
 122
 123         if (res->flags & IORESOURCE_IO)
 124                 root = &ioport_resource;
 125         if (res->flags & IORESOURCE_MEM)
 126                 root = &iomem_resource;
 127
 128         return root;
 129 }
 130
 131 #define pcibios_scan_all_fns(a, b)      0
 132
 133 #endif /* _ASM_PCI_H */