util/superiotool/smsc.c

   1 /*
   2  * This file is part of the LinuxBIOS project.
   3  *
   4  * Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  */
  20
  21 #include "superiotool.h"
  22
  23 #define DEVICE_ID_REG   0x0d
  24 #define DEVICE_REV_REG  0x0e
  25
  26 const static struct superio_registers reg_table[] = {
  27         {0x28, "FDC37N769", {
  28                 {NOLDN, NULL,
  29                         {0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,
  30                          0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0x10,0x11,0x12,0x13,
  31                          0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,
  32                          0x1e,0x1f,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,
  33                          0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,EOT},
  34                         {0x28,0x9c,0x88,0x70,0x00,0x00,0xff,0x00,0x00,0x00,
  35                          0x00,0x00,0x02,0x28,NANA,0x00,0x00,0x80,RSVD,RSVD,
  36                          NANA,NANA,NANA,0x03,RSVD,RSVD,RSVD,RSVD,RSVD,RSVD,
  37                          0x80,0x00,0x3c,RSVD,RSVD,0x00,0x00,0x00,0x00,0x00,
  38                          0x00,0x00,RSVD,0x00,0x00,0x03,0x00,0x00,EOT}},
  39                 {EOT}}},
  40         {EOT}
  41 };
  42
  43 static void enter_conf_mode_smsc(uint16_t port)
  44 {
  45         outb(0x55, port);
  46 }
  47
  48 static void exit_conf_mode_smsc(uint16_t port)
  49 {
  50         outb(0xaa, port);
  51 }
  52
  53 void probe_idregs_smsc(uint16_t port)
  54 {
  55         uint8_t id, rev;
  56
  57         enter_conf_mode_smsc(port);
  58
  59         id = regval(port, DEVICE_ID_REG);
  60         rev = regval(port, DEVICE_REV_REG);
  61
  62         if (superio_unknown(reg_table, id)) {
  63                 no_superio_found(port);
  64                 exit_conf_mode_smsc(port);
  65                 return;
  66         }
  67
  68         printf("Found SMSC %s (id=0x%02x, rev=0x%02x) at port=0x%x\n",
  69                get_superio_name(reg_table, id), id, rev, port);
  70
  71         dump_superio("SMSC", reg_table, port, id);
  72
  73         exit_conf_mode_smsc(port);
  74 }
  75