arch/x86/isa.cpp

   1 /* Quarn OS
   2  *
   3  * ISA bus
   4  *
   5  * Copyright (C) 2008-2009 Pawel Dziepak
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  */
  22
  23 #include "general.h"
  24 #include "lowlevel.h"
  25
  26 #include "manes/manec.h"
  27 #include "resources/unknown.h"
  28
  29 #include "resources/device.h"
  30 #include "resources/keybscr.h"
  31 #include "resources/speaker.h"
  32 #include "resources/fdc.h"
  33
  34 #include "resources/isa.h"
  35
  36 using namespace arch;
  37 using namespace manes;
  38 using namespace resources;
  39
  40 int isa::scan_bus() {
  41         int dev_count = 0;
  42
  43         /* Keyboard */
  44         isa_did *tty0_addr = new isa_did(this);
  45         device *tty = new_component((type_name)"keybscr")->get<device>();
  46 //      __asm__("cli\nhlt"::"a"(tty));
  47         if (tty->init_device(tty0_addr))
  48                 dev_count++;
  49         /* Get number of installed rs232 ports */
  50         u8 *p_rs232_count = (u8*)0x411;
  51         u8 rs232_count = *p_rs232_count & 7;
  52
  53         /* COM1 (RS232) serial port */
  54         if (rs232_count > 0) {
  55                 u16 *com1_base_port = (u16*)0x400;
  56                 p<isa_did> com1_addr = new isa_did(this);
  57                 com1_addr->irq = 0x24;
  58                 com1_addr->ioport_base = (int)*com1_base_port;
  59
  60 /*              if (manec::get()->get<type>("/type,rs232")) {
  61                         component *c = new_component((manes::type_name)"rs232");
  62                         c->get<device>()->init_device(com1_addr);
  63                 } else {*/
  64                         component *c = new_component((manes::type_name)"unknown");
  65                         c->get<unknown>()->init_device(com1_addr.cast<did>());
  66 //              }
  67
  68                 dev_count++;
  69         }
  70
  71         /* COM2 (RS232) serial port */
  72         if (rs232_count > 1) {
  73                 u16 *com2_base_port = (u16*)0x402;
  74                 p<isa_did> com2_addr = new isa_did(this);
  75                 com2_addr->irq = 0x23 ;
  76                 com2_addr->ioport_base = (int)*com2_base_port;
  77
  78                         component *c = new_component((manes::type_name)"unknown");
  79                         c->get<unknown>()->init_device(com2_addr.cast<did>());
  80
  81                 dev_count++;
  82         }
  83
  84         /* Speaker */
  85         isa_did *speak_addr = new isa_did(this);
  86         speaker *speak = new_component((type_name)"speaker")->get<speaker>();
  87         speak->init_device(speak_addr);
  88         dev_count++;
  89
  90         /* RTC */
  91
  92         /* Check if 1.44MB floppy disks drive exist (info stored int cmos) */
  93         outb(0x70, 0x10);
  94         u8 fd_drives = inb(0x71);
  95
  96         /* FDC 1 (A:) */
  97         if ((fd_drives >> 4) == 4) {
  98                 isa_did *fdc_addr = new isa_did(this);
  99                 fdc_addr->irq = 0x26;
 100                 fdc_addr->ioport_base = 0x3f0;
 101                 fdc_addr->dma_channel = 2;
 102                 fdc *ofdc = manec::get()->new_component((type_name)"fdc")->get<fdc>();
 103                 ofdc->init_device(fdc_addr);
 104                 dev_count++;
 105         }
 106
 107         /* FDC 2 (B:) */
 108         if ((fd_drives & 0xF) == 4) {
 109                 /* not ready yet
 110                 isa_address fdc_addr;
 111                 fdc_addr.irq = 6;
 112                 fdc_addr.ioport_base = 0x370;
 113                 fdc_addr.dma_channel = 2;
 114                 fdc *ofdc = (fdc*)rman->new_object("fdc");
 115                 ofdc->init_device(fdc_addr);*/
 116                 dev_count++;
 117         }
 118
 119         return dev_count;
 120 }