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,
  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 /* Note: The actual SMSC ID is 16 bits, but we must pass 32 bits here. */
  44 void dump_smsc(uint32_t port, uint32_t id)
  45 {
  46         switch (id) {
  47         case 0x28:
  48                 dump_superio("SMSC", reg_table, port, id);
  49                 break;
  50         default:
  51                 printf("Unknown SMSC chip, id=0x%02x\n", id);
  52                 break;
  53         }
  54 }
  55
  56 void probe_idregs_smsc(unsigned short port)
  57 {
  58         uint16_t id, rev;
  59
  60         outb(0x55, port);               /* Enter configuration mode. */
  61
  62         /* Read device ID. */
  63         id = regval(port, DEVICE_ID_REG);
  64         if (id != 0x28) {       /* TODO: Support for other SMSC chips. */
  65                 if (inb(port) != 0xff)
  66                         printf("No Super I/O chip found at 0x%04x\n", port);
  67                 else
  68                         printf("Probing 0x%04x, failed (0x%02x), data returns 0x%02x\n", port, inb(port), inb(port + 1));
  69                 return;
  70         }
  71
  72         /* Read chip revision. */
  73         rev = regval(port, DEVICE_REV_REG);
  74
  75         printf("Super I/O found at 0x%04x: id=0x%02x, rev=0x%02x\n",
  76                port, id, rev);
  77
  78         switch (id) {
  79         case 0x28:
  80                 dump_smsc(port, id);
  81                 break;
  82         default:
  83                 printf("No dump for ID 0x%04x\n", id);
  84                 break;
  85         }
  86
  87         outb(0xaa, port);               /* Exit configuration mode. */
  88 }
  89