kernel/core/dev.c

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2007  Tomas 'ZeXx86' Jedrzejek (zexx86@gmail.com)
   4  *
   5  *  This program is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19
  20 #include <system.h>
  21 #include <string.h>
  22 #include <dev.h>
  23 #include <vfs.h>
  24 #include <rs232.h>
  25 #include <drive.h>
  26 #include <partition.h>
  27 #include <speaker.h>
  28 #include <pci.h>
  29 #include <config.h>
  30
  31 /* pcnet32 - ethernet card */
  32 #include "../drivers/net/pcnet32/pcnet32_dev.h"
  33
  34
  35 dev_t dev_list;
  36
  37 void dev_display ()
  38 {
  39         dev_t *dev;
  40         for (dev = dev_list.next; dev != &dev_list; dev = dev->next)
  41                 kprintf ("%s: %s\n", dev->devname, dev->desc);
  42 }
  43
  44 dev_t *dev_find (char *devname)
  45 {
  46         dev_t *dev;
  47         for (dev = dev_list.next; dev != &dev_list; dev = dev->next) {
  48                 if (!strcmp (dev->devname, devname))
  49                         return dev;
  50         }
  51
  52         return 0;
  53 }
  54
  55 dev_t *dev_findbypartition (partition_t *p)
  56 {
  57         dev_t *dev;
  58         for (dev = dev_list.next; dev != &dev_list; dev = dev->next) {
  59                 if (!strncmp (dev->devname, p->name, strlen (dev->devname)))
  60                         return dev;
  61         }
  62
  63         return 0;
  64 }
  65
  66 dev_t *dev_register (char *devname, char *desc, unsigned attrib, dev_handler_t *handler)
  67 {
  68         /* first check length of device name */
  69         /*if (strlen (desc) >= DEFAULT_MAX_DESCLENGTH ||
  70             strlen (devname) >= DEFAULT_MAX_DEVNLENGTH)
  71                 return 0;*/
  72
  73         /* dev name havent to exists */
  74         /*if (dev_find (devname) != 0)
  75                 return 0;*/
  76
  77         dev_t *dev;
  78
  79         /* alloc and init context */
  80         dev = (dev_t *) kmalloc (sizeof (dev_t));
  81
  82         unsigned l = strlen (devname);
  83         memcpy (dev->devname, "/dev/", 5);
  84         memcpy (dev->devname+5, devname, l);
  85         dev->devname[l+5] = '\0';
  86
  87         strcpy (dev->desc, desc);
  88
  89         dev->attrib = attrib;
  90         dev->handler = handler;
  91
  92         /* add into list */
  93         dev->next = &dev_list;
  94         dev->prev = dev_list.prev;
  95         dev->prev->next = dev;
  96         dev->next->prev = dev;
  97
  98         settextcolor (9, 0);
  99         putch (':');
 100
 101         settextcolor (7, 0);
 102         kprintf (" %s -> init %s\n", devname, desc);
 103
 104         vfs_list_add (devname, VFS_FILEATTR_FILE | VFS_FILEATTR_SYSTEM, "/dev/");
 105
 106         handler (DEV_ACT_INIT);
 107
 108         return dev;
 109 }
 110
 111 void dev_install ()
 112 {
 113 #ifdef CONFIG_DRV_VGA
 114         dev_register ("vga", "Graphics adapter", DEV_ATTR_CHAR, (dev_handler_t *) &video_acthandler);
 115 #endif
 116
 117 #ifdef CONFIG_DRV_FLOPPY
 118         dev_t *dev = dev_register ("fd", "Floppy drive", DEV_ATTR_BLOCK, (dev_handler_t *) &floppy_acthandler);
 119         partition_add (dev, fs_supported ("fat12"));    // small HACK
 120 #endif
 121
 122 #ifdef CONFIG_DRV_RS232
 123         dev_register ("com0", "Serial port", DEV_ATTR_CHAR, (dev_handler_t *) &rs232_acthandler);
 124 #endif
 125
 126 #ifdef CONFIG_DRV_ATA
 127         dev_register ("ata", "ATA computer bus", DEV_ATTR_SPECIAL, (dev_handler_t *) &ata_acthandler);
 128 #endif
 129
 130 #ifdef CONFIG_DRV_SPEAKER
 131         dev_register ("pcspk", "PC-Speaker", DEV_ATTR_CHAR, (dev_handler_t *) &pcspk_acthandler);
 132 #endif
 133
 134 #ifdef CONFIG_DRV_PCI
 135         dev_register ("pci", "PCI computer bus", DEV_ATTR_SPECIAL, (dev_handler_t *) &bus_pci_acthandler);
 136 #endif
 137
 138 #ifdef CONFIG_DRV_PCNET32
 139         dev_register ("pcnet32", "Ethernet card", DEV_ATTR_NET, (dev_handler_t *) &pcnet32_acthandler);
 140 #endif
 141 }
 142
 143 unsigned int init_dev ()
 144 {
 145         dev_list.next = &dev_list;
 146         dev_list.prev = &dev_list;
 147
 148         // set default dev values
 149         dev_list.devname[0] = '\0';
 150         dev_list.desc[0] = '\0';
 151
 152         dev_install ();
 153
 154         return 1;
 155 }