src/add-ons/kernel/bus_managers/isa/arch/x86/isa_controller.cpp

   1 /*
   2  * Copyright 2007 Haiku, Inc.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * arch-specific config manager
   6  *
   7  * Authors (in chronological order):
   8  *              François Revol (revol@free.fr)
   9  */
  10
  11 #include <KernelExport.h>
  12 #include "ISA.h"
  13 #include "arch_cpu.h"
  14 #include "isa_arch.h"
  15
  16 //#define TRACE_ISA
  17 #ifdef TRACE_ISA
  18 #       define TRACE(x) dprintf x
  19 #else
  20 #       define TRACE(x) ;
  21 #endif
  22
  23
  24 uint8
  25 arch_isa_read_io_8(int mapped_io_addr)
  26 {
  27         uint8 value = in8(mapped_io_addr);
  28
  29         TRACE(("isa_read8(%x->%x)\n", mapped_io_addr, value));
  30
  31         return value;
  32 }
  33
  34
  35 void
  36 arch_isa_write_io_8(int mapped_io_addr, uint8 value)
  37 {
  38         TRACE(("isa_write8(%x->%x)\n", value, mapped_io_addr));
  39
  40         out8(value, mapped_io_addr);
  41 }
  42
  43
  44 uint16
  45 arch_isa_read_io_16(int mapped_io_addr)
  46 {
  47         return in16(mapped_io_addr);
  48 }
  49
  50
  51 void
  52 arch_isa_write_io_16(int mapped_io_addr, uint16 value)
  53 {
  54         out16(value, mapped_io_addr);
  55 }
  56
  57
  58 uint32
  59 arch_isa_read_io_32(int mapped_io_addr)
  60 {
  61         return in32(mapped_io_addr);
  62 }
  63
  64
  65 void
  66 arch_isa_write_io_32(int mapped_io_addr, uint32 value)
  67 {
  68         out32(value, mapped_io_addr);
  69 }
  70
  71
  72 phys_addr_t
  73 arch_isa_ram_address(phys_addr_t physical_address_in_system_memory)
  74 {
  75         // this is what the BeOS kernel does
  76         return physical_address_in_system_memory;
  77 }
  78
  79
  80 status_t
  81 arch_isa_init(void)
  82 {
  83         return B_OK;
  84 }