lib_i386/pci_type1.c

   1 /*
   2  * Support for type PCI configuration cycles.
   3  * based on pci_indirect.c
   4  *
   5  * Copyright (C) 2002 Daniel Engström, Omicron Ceti AB, daniel@omicron.se.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version
  10  * 2 of the License, or (at your option) any later version.
  11  */
  12
  13 #include <common.h>
  14
  15 #ifdef CONFIG_PCI
  16
  17 #include <asm/processor.h>
  18 #include <asm/io.h>
  19 #include <pci.h>
  20
  21 #define cfg_read(val, addr, type, op)   *val = op((type)(addr))
  22 #define cfg_write(val, addr, type, op)  op((val), (type *)(addr))
  23
  24 #define TYPE1_PCI_OP(rw, size, type, op, mask)                   \
  25 static int                                                               \
  26 type1_##rw##_config_##size(struct pci_controller *hose,                  \
  27                               pci_dev_t dev, int offset, type val)       \
  28 {                                                                        \
  29         outl(dev | (offset & 0xfc) | 0x80000000, hose->cfg_addr);        \
  30         cfg_##rw(val, hose->cfg_data + (offset & mask), type, op);       \
  31         return 0;                                                        \
  32 }
  33
  34
  35 TYPE1_PCI_OP(read, byte, u8 *, inb, 3)
  36 TYPE1_PCI_OP(read, word, u16 *, inw, 2)
  37 TYPE1_PCI_OP(read, dword, u32 *, inl, 0)
  38
  39 TYPE1_PCI_OP(write, byte, u8, outb, 3)
  40 TYPE1_PCI_OP(write, word, u16, outw, 2)
  41 TYPE1_PCI_OP(write, dword, u32, outl, 0)
  42
  43 void pci_setup_type1(struct pci_controller* hose, u32 cfg_addr, u32 cfg_data)
  44 {
  45         pci_set_ops(hose,
  46                     type1_read_config_byte,
  47                     type1_read_config_word,
  48                     type1_read_config_dword,
  49                     type1_write_config_byte,
  50                     type1_write_config_word,
  51                     type1_write_config_dword);
  52
  53         hose->cfg_addr = (unsigned int *) cfg_addr;
  54         hose->cfg_data = (unsigned char *) cfg_data;
  55 }
  56
  57 #endif