util/superiotool/amd.c

   1 /*
   2  * This file is part of the superiotool project.
   3  *
   4  * Copyright (C) 2011 Rudolf Marek <r.marek@assembler.cz>
   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
  17 #include "superiotool.h"
  18
  19 #define DEVICE_ID_REG           0x20
  20 #define DEVICE_REV_REG          0x21
  21
  22 static const struct superio_registers reg_table[] = {
  23         {0xb7, "SB7xx", {
  24                 {NOLDN, NULL,
  25                         {0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x28,0x29,0x2a,
  26                          0x2b,0x2c,0x2e, 0x2f, EOT},
  27                          {NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,EOT}},
  28                 {0x3, "EC channel 0",
  29                         {0x30,0x60,0x61, EOT},
  30                          {NANA,NANA,NANA,EOT}},
  31                 {0x5, "Irda",
  32                         {0x30,0x60,0x61,0x70, EOT},
  33                          {NANA,NANA,NANA,NANA,EOT}},
  34                 {0x7, "Keyboard Controller",
  35                         {0x30, EOT},
  36                          {NANA,EOT}},
  37                 {0x9, "Mailbox",
  38                         {0x30,0x60,0x61, EOT},
  39                         {NANA,NANA,NANA,EOT}},
  40                 {EOT}}},
  41         {0xb8, "SB8xx", {
  42                 {NOLDN, NULL,
  43                         {0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x28,0x29,0x2a,
  44                          0x2b,0x2c,0x2e, 0x2f, EOT},
  45                          {NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,EOT}},
  46                 {0x3, "EC channel 0",
  47                         {0x30,0x60,0x61, EOT},
  48                          {NANA,NANA,NANA,EOT}},
  49                 {0x5, "Irda",
  50                         {0x30,0x60,0x61,0x70, EOT},
  51                          {NANA,NANA,NANA,NANA,EOT}},
  52                 {0x7, "Keyboard Controller",
  53                         {0x30, EOT},
  54                          {NANA,EOT}},
  55                 {0x9, "Mailbox",
  56                         {0x30,0x60,0x61, EOT},
  57                         {NANA,NANA,NANA,EOT}},
  58                 {EOT}}},
  59         {EOT}
  60 };
  61
  62 /* same as serverengines */
  63 static void enter_conf_mode_ec(uint16_t port)
  64 {
  65         OUTB(0x5a, port);
  66 }
  67
  68 static void exit_conf_mode_ec(uint16_t port)
  69 {
  70         OUTB(0xa5, port);
  71 }
  72
  73 uint16_t detect_ec(void)
  74 {
  75         uint16_t ec_port;
  76         struct pci_dev *dev;
  77
  78         dev = pci_dev_find(0x1002, 0x439d);
  79
  80         if (!dev) {
  81                 return 0;
  82         }
  83
  84         /* is EC disabled ? */
  85         if (!(pci_read_byte(dev, 0x40) & (1 << 7)))
  86                 return 0;
  87
  88         ec_port = pci_read_word(dev, 0xa4);
  89
  90         if (!(ec_port & 0x1))
  91                 return 0;
  92
  93         ec_port &= ~0x1;
  94
  95         return ec_port;
  96 }
  97
  98 void probe_idregs_amd(uint16_t port)
  99 {
 100         uint8_t rev, devid;
 101
 102         probing_for("AMD EC", "", port);
 103
 104         if (!(port = detect_ec()))
 105                 return;
 106
 107         enter_conf_mode_ec(port);
 108
 109         devid = regval(port, DEVICE_ID_REG);
 110         rev = regval(port, DEVICE_REV_REG);
 111
 112         if (superio_unknown(reg_table, devid)) {
 113                 if (verbose)
 114                         printf(NOTFOUND "id=0x%02x, rev=0x%02x\n", devid, rev);
 115                 exit_conf_mode_ec(port);
 116                 return;
 117         }
 118
 119         printf("Found AMD EC %s (id=0x%02x, rev=0x%02x) at 0x%x\n",
 120                get_superio_name(reg_table, devid), devid, rev, port);
 121         chip_found = 1;
 122
 123         dump_superio("AMD EC", reg_table, port, devid, LDN_SEL);
 124
 125         exit_conf_mode_ec(port);
 126 }
 127
 128 void print_amd_chips(void)
 129 {
 130         print_vendor_chips("AMD EC", reg_table);
 131 }