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  * 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           0x20
  24 #define DEVICE_REV_REG          0x21
  25
  26 static const struct superio_registers reg_table[] = {
  27         {0xb7, "SB7xx", {
  28                 {NOLDN, NULL,
  29                         {0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x28,0x29,0x2a,
  30                          0x2b,0x2c,0x2e, 0x2f, EOT},
  31                          {NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,EOT}},
  32                 {0x3, "EC channel 0",
  33                         {0x30,0x60,0x61, EOT},
  34                          {NANA,NANA,NANA,EOT}},
  35                 {0x5, "Irda",
  36                         {0x30,0x60,0x61,0x70, EOT},
  37                          {NANA,NANA,NANA,NANA,EOT}},
  38                 {0x7, "Keyboard Controller",
  39                         {0x30, EOT},
  40                          {NANA,EOT}},
  41                 {0x9, "Mailbox",
  42                         {0x30,0x60,0x61, EOT},
  43                         {NANA,NANA,NANA,EOT}},
  44                 {EOT}}},
  45         {0xb8, "SB8xx", {
  46                 {NOLDN, NULL,
  47                         {0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x28,0x29,0x2a,
  48                          0x2b,0x2c,0x2e, 0x2f, EOT},
  49                          {NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,EOT}},
  50                 {0x3, "EC channel 0",
  51                         {0x30,0x60,0x61, EOT},
  52                          {NANA,NANA,NANA,EOT}},
  53                 {0x5, "Irda",
  54                         {0x30,0x60,0x61,0x70, EOT},
  55                          {NANA,NANA,NANA,NANA,EOT}},
  56                 {0x7, "Keyboard Controller",
  57                         {0x30, EOT},
  58                          {NANA,EOT}},
  59                 {0x9, "Mailbox",
  60                         {0x30,0x60,0x61, EOT},
  61                         {NANA,NANA,NANA,EOT}},
  62                 {EOT}}},
  63         {EOT}
  64 };
  65
  66 /* same as serverengines */
  67 static void enter_conf_mode_ec(uint16_t port)
  68 {
  69         OUTB(0x5a, port);
  70 }
  71
  72 static void exit_conf_mode_ec(uint16_t port)
  73 {
  74         OUTB(0xa5, port);
  75 }
  76
  77 uint16_t detect_ec(void)
  78 {
  79         uint16_t ec_port;
  80         struct pci_dev *dev;
  81
  82         dev = pci_dev_find(0x1002, 0x439d);
  83
  84         if (!dev) {
  85                 return 0;
  86         }
  87
  88         /* is EC disabled ? */
  89         if (!(pci_read_byte(dev, 0x40) & (1 << 7)))
  90                 return 0;
  91
  92         ec_port = pci_read_word(dev, 0xa4);
  93
  94         if (!(ec_port & 0x1))
  95                 return 0;
  96
  97         ec_port &= ~0x1;
  98
  99         return ec_port;
 100 }
 101
 102 void probe_idregs_amd(uint16_t port)
 103 {
 104         uint8_t rev, devid;
 105
 106         probing_for("AMD EC", "", port);
 107
 108         if (!(port = detect_ec()))
 109                 return;
 110
 111         enter_conf_mode_ec(port);
 112
 113         devid = regval(port, DEVICE_ID_REG);
 114         rev = regval(port, DEVICE_REV_REG);
 115
 116         if (superio_unknown(reg_table, devid)) {
 117                 if (verbose)
 118                         printf(NOTFOUND "id=0x%02x, rev=0x%02x\n", devid, rev);
 119                 exit_conf_mode_ec(port);
 120                 return;
 121         }
 122
 123         printf("Found AMD EC %s (id=0x%02x, rev=0x%02x) at 0x%x\n",
 124                get_superio_name(reg_table, devid), devid, rev, port);
 125         chip_found = 1;
 126
 127         dump_superio("AMD EC", reg_table, port, devid, LDN_SEL);
 128
 129         exit_conf_mode_ec(port);
 130 }
 131
 132 void print_amd_chips(void)
 133 {
 134         print_vendor_chips("AMD EC", reg_table);
 135 }