linux/drivers/hwmon/abituguru3.c
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   1/*
   2 * abituguru3.c
   3 *
   4 * Copyright (c) 2006-2008 Hans de Goede <hdegoede@redhat.com>
   5 * Copyright (c) 2008 Alistair John Strachan <alistair@devzero.co.uk>
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation; either version 2 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21/*
  22 * This driver supports the sensor part of revision 3 of the custom Abit uGuru
  23 * chip found on newer Abit uGuru motherboards. Note: because of lack of specs
  24 * only reading the sensors and their settings is supported.
  25 */
  26
  27#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  28
  29#include <linux/module.h>
  30#include <linux/init.h>
  31#include <linux/slab.h>
  32#include <linux/jiffies.h>
  33#include <linux/mutex.h>
  34#include <linux/err.h>
  35#include <linux/delay.h>
  36#include <linux/platform_device.h>
  37#include <linux/hwmon.h>
  38#include <linux/hwmon-sysfs.h>
  39#include <linux/dmi.h>
  40#include <linux/io.h>
  41
  42/* uGuru3 bank addresses */
  43#define ABIT_UGURU3_SETTINGS_BANK               0x01
  44#define ABIT_UGURU3_SENSORS_BANK                0x08
  45#define ABIT_UGURU3_MISC_BANK                   0x09
  46#define ABIT_UGURU3_ALARMS_START                0x1E
  47#define ABIT_UGURU3_SETTINGS_START              0x24
  48#define ABIT_UGURU3_VALUES_START                0x80
  49#define ABIT_UGURU3_BOARD_ID                    0x0A
  50/* uGuru3 sensor bank flags */                       /* Alarm if: */
  51#define ABIT_UGURU3_TEMP_HIGH_ALARM_ENABLE      0x01 /*  temp over warn */
  52#define ABIT_UGURU3_VOLT_HIGH_ALARM_ENABLE      0x02 /*  volt over max */
  53#define ABIT_UGURU3_VOLT_LOW_ALARM_ENABLE       0x04 /*  volt under min */
  54#define ABIT_UGURU3_TEMP_HIGH_ALARM_FLAG        0x10 /* temp is over warn */
  55#define ABIT_UGURU3_VOLT_HIGH_ALARM_FLAG        0x20 /* volt is over max */
  56#define ABIT_UGURU3_VOLT_LOW_ALARM_FLAG         0x40 /* volt is under min */
  57#define ABIT_UGURU3_FAN_LOW_ALARM_ENABLE        0x01 /*   fan under min */
  58#define ABIT_UGURU3_BEEP_ENABLE                 0x08 /* beep if alarm */
  59#define ABIT_UGURU3_SHUTDOWN_ENABLE             0x80 /* shutdown if alarm */
  60/* sensor types */
  61#define ABIT_UGURU3_IN_SENSOR                   0
  62#define ABIT_UGURU3_TEMP_SENSOR                 1
  63#define ABIT_UGURU3_FAN_SENSOR                  2
  64
  65/*
  66 * Timeouts / Retries, if these turn out to need a lot of fiddling we could
  67 * convert them to params. Determined by trial and error. I assume this is
  68 * cpu-speed independent, since the ISA-bus and not the CPU should be the
  69 * bottleneck.
  70 */
  71#define ABIT_UGURU3_WAIT_TIMEOUT                250
  72/*
  73 * Normally the 0xAC at the end of synchronize() is reported after the
  74 * first read, but sometimes not and we need to poll
  75 */
  76#define ABIT_UGURU3_SYNCHRONIZE_TIMEOUT         5
  77/* utility macros */
  78#define ABIT_UGURU3_NAME                        "abituguru3"
  79#define ABIT_UGURU3_DEBUG(format, arg...)               \
  80        do {                                            \
  81                if (verbose)                            \
  82                        pr_debug(format , ## arg);      \
  83        } while (0)
  84
  85/* Macros to help calculate the sysfs_names array length */
  86#define ABIT_UGURU3_MAX_NO_SENSORS 26
  87/*
  88 * sum of strlen +1 of: in??_input\0, in??_{min,max}\0, in??_{min,max}_alarm\0,
  89 * in??_{min,max}_alarm_enable\0, in??_beep\0, in??_shutdown\0, in??_label\0
  90 */
  91#define ABIT_UGURU3_IN_NAMES_LENGTH \
  92                                (11 + 2 * 9 + 2 * 15 + 2 * 22 + 10 + 14 + 11)
  93/*
  94 * sum of strlen +1 of: temp??_input\0, temp??_max\0, temp??_crit\0,
  95 * temp??_alarm\0, temp??_alarm_enable\0, temp??_beep\0, temp??_shutdown\0,
  96 * temp??_label\0
  97 */
  98#define ABIT_UGURU3_TEMP_NAMES_LENGTH (13 + 11 + 12 + 13 + 20 + 12 + 16 + 13)
  99/*
 100 * sum of strlen +1 of: fan??_input\0, fan??_min\0, fan??_alarm\0,
 101 * fan??_alarm_enable\0, fan??_beep\0, fan??_shutdown\0, fan??_label\0
 102 */
 103#define ABIT_UGURU3_FAN_NAMES_LENGTH (12 + 10 + 12 + 19 + 11 + 15 + 12)
 104/*
 105 * Worst case scenario 16 in sensors (longest names_length) and the rest
 106 * temp sensors (second longest names_length).
 107 */
 108#define ABIT_UGURU3_SYSFS_NAMES_LENGTH (16 * ABIT_UGURU3_IN_NAMES_LENGTH + \
 109        (ABIT_UGURU3_MAX_NO_SENSORS - 16) * ABIT_UGURU3_TEMP_NAMES_LENGTH)
 110
 111/*
 112 * All the macros below are named identical to the openguru2 program
 113 * reverse engineered by Louis Kruger, hence the names might not be 100%
 114 * logical. I could come up with better names, but I prefer keeping the names
 115 * identical so that this driver can be compared with his work more easily.
 116 */
 117/* Two i/o-ports are used by uGuru */
 118#define ABIT_UGURU3_BASE                        0x00E0
 119#define ABIT_UGURU3_CMD                         0x00
 120#define ABIT_UGURU3_DATA                        0x04
 121#define ABIT_UGURU3_REGION_LENGTH               5
 122/*
 123 * The wait_xxx functions return this on success and the last contents
 124 * of the DATA register (0-255) on failure.
 125 */
 126#define ABIT_UGURU3_SUCCESS                     -1
 127/* uGuru status flags */
 128#define ABIT_UGURU3_STATUS_READY_FOR_READ       0x01
 129#define ABIT_UGURU3_STATUS_BUSY                 0x02
 130
 131
 132/* Structures */
 133struct abituguru3_sensor_info {
 134        const char *name;
 135        int port;
 136        int type;
 137        int multiplier;
 138        int divisor;
 139        int offset;
 140};
 141
 142/* Avoid use of flexible array members */
 143#define ABIT_UGURU3_MAX_DMI_NAMES 2
 144
 145struct abituguru3_motherboard_info {
 146        u16 id;
 147        const char *dmi_name[ABIT_UGURU3_MAX_DMI_NAMES + 1];
 148        /* + 1 -> end of sensors indicated by a sensor with name == NULL */
 149        struct abituguru3_sensor_info sensors[ABIT_UGURU3_MAX_NO_SENSORS + 1];
 150};
 151
 152/*
 153 * For the Abit uGuru, we need to keep some data in memory.
 154 * The structure is dynamically allocated, at the same time when a new
 155 * abituguru3 device is allocated.
 156 */
 157struct abituguru3_data {
 158        struct device *hwmon_dev;       /* hwmon registered device */
 159        struct mutex update_lock;       /* protect access to data and uGuru */
 160        unsigned short addr;            /* uguru base address */
 161        char valid;                     /* !=0 if following fields are valid */
 162        unsigned long last_updated;     /* In jiffies */
 163
 164        /*
 165         * For convenience the sysfs attr and their names are generated
 166         * automatically. We have max 10 entries per sensor (for in sensors)
 167         */
 168        struct sensor_device_attribute_2 sysfs_attr[ABIT_UGURU3_MAX_NO_SENSORS
 169                * 10];
 170
 171        /* Buffer to store the dynamically generated sysfs names */
 172        char sysfs_names[ABIT_UGURU3_SYSFS_NAMES_LENGTH];
 173
 174        /* Pointer to the sensors info for the detected motherboard */
 175        const struct abituguru3_sensor_info *sensors;
 176
 177        /*
 178         * The abituguru3 supports up to 48 sensors, and thus has registers
 179         * sets for 48 sensors, for convienence reasons / simplicity of the
 180         * code we always read and store all registers for all 48 sensors
 181         */
 182
 183        /* Alarms for all 48 sensors (1 bit per sensor) */
 184        u8 alarms[48/8];
 185
 186        /* Value of all 48 sensors */
 187        u8 value[48];
 188
 189        /*
 190         * Settings of all 48 sensors, note in and temp sensors (the first 32
 191         * sensors) have 3 bytes of settings, while fans only have 2 bytes,
 192         * for convenience we use 3 bytes for all sensors
 193         */
 194        u8 settings[48][3];
 195};
 196
 197
 198/* Constants */
 199static const struct abituguru3_motherboard_info abituguru3_motherboards[] = {
 200        { 0x000C, { NULL } /* Unknown, need DMI string */, {
 201                { "CPU Core",            0, 0, 10, 1, 0 },
 202                { "DDR",                 1, 0, 10, 1, 0 },
 203                { "DDR VTT",             2, 0, 10, 1, 0 },
 204                { "CPU VTT 1.2V",        3, 0, 10, 1, 0 },
 205                { "MCH & PCIE 1.5V",     4, 0, 10, 1, 0 },
 206                { "MCH 2.5V",            5, 0, 20, 1, 0 },
 207                { "ICH 1.05V",           6, 0, 10, 1, 0 },
 208                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 209                { "ATX +12V (4-pin)",    8, 0, 60, 1, 0 },
 210                { "ATX +5V",             9, 0, 30, 1, 0 },
 211                { "+3.3V",              10, 0, 20, 1, 0 },
 212                { "5VSB",               11, 0, 30, 1, 0 },
 213                { "CPU",                24, 1, 1, 1, 0 },
 214                { "System",             25, 1, 1, 1, 0 },
 215                { "PWM",                26, 1, 1, 1, 0 },
 216                { "CPU Fan",            32, 2, 60, 1, 0 },
 217                { "NB Fan",             33, 2, 60, 1, 0 },
 218                { "SYS FAN",            34, 2, 60, 1, 0 },
 219                { "AUX1 Fan",           35, 2, 60, 1, 0 },
 220                { NULL, 0, 0, 0, 0, 0 } }
 221        },
 222        { 0x000D, { NULL } /* Abit AW8, need DMI string */, {
 223                { "CPU Core",            0, 0, 10, 1, 0 },
 224                { "DDR",                 1, 0, 10, 1, 0 },
 225                { "DDR VTT",             2, 0, 10, 1, 0 },
 226                { "CPU VTT 1.2V",        3, 0, 10, 1, 0 },
 227                { "MCH & PCIE 1.5V",     4, 0, 10, 1, 0 },
 228                { "MCH 2.5V",            5, 0, 20, 1, 0 },
 229                { "ICH 1.05V",           6, 0, 10, 1, 0 },
 230                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 231                { "ATX +12V (4-pin)",    8, 0, 60, 1, 0 },
 232                { "ATX +5V",             9, 0, 30, 1, 0 },
 233                { "+3.3V",              10, 0, 20, 1, 0 },
 234                { "5VSB",               11, 0, 30, 1, 0 },
 235                { "CPU",                24, 1, 1, 1, 0 },
 236                { "System",             25, 1, 1, 1, 0 },
 237                { "PWM1",               26, 1, 1, 1, 0 },
 238                { "PWM2",               27, 1, 1, 1, 0 },
 239                { "PWM3",               28, 1, 1, 1, 0 },
 240                { "PWM4",               29, 1, 1, 1, 0 },
 241                { "CPU Fan",            32, 2, 60, 1, 0 },
 242                { "NB Fan",             33, 2, 60, 1, 0 },
 243                { "SYS Fan",            34, 2, 60, 1, 0 },
 244                { "AUX1 Fan",           35, 2, 60, 1, 0 },
 245                { "AUX2 Fan",           36, 2, 60, 1, 0 },
 246                { "AUX3 Fan",           37, 2, 60, 1, 0 },
 247                { "AUX4 Fan",           38, 2, 60, 1, 0 },
 248                { "AUX5 Fan",           39, 2, 60, 1, 0 },
 249                { NULL, 0, 0, 0, 0, 0 } }
 250        },
 251        { 0x000E, { NULL } /* AL-8, need DMI string */, {
 252                { "CPU Core",            0, 0, 10, 1, 0 },
 253                { "DDR",                 1, 0, 10, 1, 0 },
 254                { "DDR VTT",             2, 0, 10, 1, 0 },
 255                { "CPU VTT 1.2V",        3, 0, 10, 1, 0 },
 256                { "MCH & PCIE 1.5V",     4, 0, 10, 1, 0 },
 257                { "MCH 2.5V",            5, 0, 20, 1, 0 },
 258                { "ICH 1.05V",           6, 0, 10, 1, 0 },
 259                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 260                { "ATX +12V (4-pin)",    8, 0, 60, 1, 0 },
 261                { "ATX +5V",             9, 0, 30, 1, 0 },
 262                { "+3.3V",              10, 0, 20, 1, 0 },
 263                { "5VSB",               11, 0, 30, 1, 0 },
 264                { "CPU",                24, 1, 1, 1, 0 },
 265                { "System",             25, 1, 1, 1, 0 },
 266                { "PWM",                26, 1, 1, 1, 0 },
 267                { "CPU Fan",            32, 2, 60, 1, 0 },
 268                { "NB Fan",             33, 2, 60, 1, 0 },
 269                { "SYS Fan",            34, 2, 60, 1, 0 },
 270                { NULL, 0, 0, 0, 0, 0 } }
 271        },
 272        { 0x000F, { NULL } /* Unknown, need DMI string */, {
 273
 274                { "CPU Core",            0, 0, 10, 1, 0 },
 275                { "DDR",                 1, 0, 10, 1, 0 },
 276                { "DDR VTT",             2, 0, 10, 1, 0 },
 277                { "CPU VTT 1.2V",        3, 0, 10, 1, 0 },
 278                { "MCH & PCIE 1.5V",     4, 0, 10, 1, 0 },
 279                { "MCH 2.5V",            5, 0, 20, 1, 0 },
 280                { "ICH 1.05V",           6, 0, 10, 1, 0 },
 281                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 282                { "ATX +12V (4-pin)",    8, 0, 60, 1, 0 },
 283                { "ATX +5V",             9, 0, 30, 1, 0 },
 284                { "+3.3V",              10, 0, 20, 1, 0 },
 285                { "5VSB",               11, 0, 30, 1, 0 },
 286                { "CPU",                24, 1, 1, 1, 0 },
 287                { "System",             25, 1, 1, 1, 0 },
 288                { "PWM",                26, 1, 1, 1, 0 },
 289                { "CPU Fan",            32, 2, 60, 1, 0 },
 290                { "NB Fan",             33, 2, 60, 1, 0 },
 291                { "SYS Fan",            34, 2, 60, 1, 0 },
 292                { NULL, 0, 0, 0, 0, 0 } }
 293        },
 294        { 0x0010, { NULL } /* Abit NI8 SLI GR, need DMI string */, {
 295                { "CPU Core",            0, 0, 10, 1, 0 },
 296                { "DDR",                 1, 0, 10, 1, 0 },
 297                { "DDR VTT",             2, 0, 10, 1, 0 },
 298                { "CPU VTT 1.2V",        3, 0, 10, 1, 0 },
 299                { "NB 1.4V",             4, 0, 10, 1, 0 },
 300                { "SB 1.5V",             6, 0, 10, 1, 0 },
 301                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 302                { "ATX +12V (4-pin)",    8, 0, 60, 1, 0 },
 303                { "ATX +5V",             9, 0, 30, 1, 0 },
 304                { "+3.3V",              10, 0, 20, 1, 0 },
 305                { "5VSB",               11, 0, 30, 1, 0 },
 306                { "CPU",                24, 1, 1, 1, 0 },
 307                { "SYS",                25, 1, 1, 1, 0 },
 308                { "PWM",                26, 1, 1, 1, 0 },
 309                { "CPU Fan",            32, 2, 60, 1, 0 },
 310                { "NB Fan",             33, 2, 60, 1, 0 },
 311                { "SYS Fan",            34, 2, 60, 1, 0 },
 312                { "AUX1 Fan",           35, 2, 60, 1, 0 },
 313                { "OTES1 Fan",          36, 2, 60, 1, 0 },
 314                { NULL, 0, 0, 0, 0, 0 } }
 315        },
 316        { 0x0011, { "AT8 32X", NULL }, {
 317                { "CPU Core",            0, 0, 10, 1, 0 },
 318                { "DDR",                 1, 0, 20, 1, 0 },
 319                { "DDR VTT",             2, 0, 10, 1, 0 },
 320                { "CPU VDDA 2.5V",       6, 0, 20, 1, 0 },
 321                { "NB 1.8V",             4, 0, 10, 1, 0 },
 322                { "NB 1.8V Dual",        5, 0, 10, 1, 0 },
 323                { "HTV 1.2",             3, 0, 10, 1, 0 },
 324                { "PCIE 1.2V",          12, 0, 10, 1, 0 },
 325                { "NB 1.2V",            13, 0, 10, 1, 0 },
 326                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 327                { "ATX +12V (4-pin)",    8, 0, 60, 1, 0 },
 328                { "ATX +5V",             9, 0, 30, 1, 0 },
 329                { "+3.3V",              10, 0, 20, 1, 0 },
 330                { "5VSB",               11, 0, 30, 1, 0 },
 331                { "CPU",                24, 1, 1, 1, 0 },
 332                { "NB",                 25, 1, 1, 1, 0 },
 333                { "System",             26, 1, 1, 1, 0 },
 334                { "PWM",                27, 1, 1, 1, 0 },
 335                { "CPU Fan",            32, 2, 60, 1, 0 },
 336                { "NB Fan",             33, 2, 60, 1, 0 },
 337                { "SYS Fan",            34, 2, 60, 1, 0 },
 338                { "AUX1 Fan",           35, 2, 60, 1, 0 },
 339                { "AUX2 Fan",           36, 2, 60, 1, 0 },
 340                { "AUX3 Fan",           37, 2, 60, 1, 0 },
 341                { NULL, 0, 0, 0, 0, 0 } }
 342        },
 343        { 0x0012, { NULL } /* Abit AN8 32X, need DMI string */, {
 344                { "CPU Core",            0, 0, 10, 1, 0 },
 345                { "DDR",                 1, 0, 20, 1, 0 },
 346                { "DDR VTT",             2, 0, 10, 1, 0 },
 347                { "HyperTransport",      3, 0, 10, 1, 0 },
 348                { "CPU VDDA 2.5V",       5, 0, 20, 1, 0 },
 349                { "NB",                  4, 0, 10, 1, 0 },
 350                { "SB",                  6, 0, 10, 1, 0 },
 351                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 352                { "ATX +12V (4-pin)",    8, 0, 60, 1, 0 },
 353                { "ATX +5V",             9, 0, 30, 1, 0 },
 354                { "+3.3V",              10, 0, 20, 1, 0 },
 355                { "5VSB",               11, 0, 30, 1, 0 },
 356                { "CPU",                24, 1, 1, 1, 0 },
 357                { "SYS",                25, 1, 1, 1, 0 },
 358                { "PWM",                26, 1, 1, 1, 0 },
 359                { "CPU Fan",            32, 2, 60, 1, 0 },
 360                { "NB Fan",             33, 2, 60, 1, 0 },
 361                { "SYS Fan",            34, 2, 60, 1, 0 },
 362                { "AUX1 Fan",           36, 2, 60, 1, 0 },
 363                { NULL, 0, 0, 0, 0, 0 } }
 364        },
 365        { 0x0013, { NULL } /* Abit AW8D, need DMI string */, {
 366                { "CPU Core",            0, 0, 10, 1, 0 },
 367                { "DDR",                 1, 0, 10, 1, 0 },
 368                { "DDR VTT",             2, 0, 10, 1, 0 },
 369                { "CPU VTT 1.2V",        3, 0, 10, 1, 0 },
 370                { "MCH & PCIE 1.5V",     4, 0, 10, 1, 0 },
 371                { "MCH 2.5V",            5, 0, 20, 1, 0 },
 372                { "ICH 1.05V",           6, 0, 10, 1, 0 },
 373                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 374                { "ATX +12V (4-pin)",    8, 0, 60, 1, 0 },
 375                { "ATX +5V",             9, 0, 30, 1, 0 },
 376                { "+3.3V",              10, 0, 20, 1, 0 },
 377                { "5VSB",               11, 0, 30, 1, 0 },
 378                { "CPU",                24, 1, 1, 1, 0 },
 379                { "System",             25, 1, 1, 1, 0 },
 380                { "PWM1",               26, 1, 1, 1, 0 },
 381                { "PWM2",               27, 1, 1, 1, 0 },
 382                { "PWM3",               28, 1, 1, 1, 0 },
 383                { "PWM4",               29, 1, 1, 1, 0 },
 384                { "CPU Fan",            32, 2, 60, 1, 0 },
 385                { "NB Fan",             33, 2, 60, 1, 0 },
 386                { "SYS Fan",            34, 2, 60, 1, 0 },
 387                { "AUX1 Fan",           35, 2, 60, 1, 0 },
 388                { "AUX2 Fan",           36, 2, 60, 1, 0 },
 389                { "AUX3 Fan",           37, 2, 60, 1, 0 },
 390                { "AUX4 Fan",           38, 2, 60, 1, 0 },
 391                { "AUX5 Fan",           39, 2, 60, 1, 0 },
 392                { NULL, 0, 0, 0, 0, 0 } }
 393        },
 394        { 0x0014, { "AB9", "AB9 Pro", NULL }, {
 395                { "CPU Core",            0, 0, 10, 1, 0 },
 396                { "DDR",                 1, 0, 10, 1, 0 },
 397                { "DDR VTT",             2, 0, 10, 1, 0 },
 398                { "CPU VTT 1.2V",        3, 0, 10, 1, 0 },
 399                { "MCH & PCIE 1.5V",     4, 0, 10, 1, 0 },
 400                { "MCH 2.5V",            5, 0, 20, 1, 0 },
 401                { "ICH 1.05V",           6, 0, 10, 1, 0 },
 402                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 403                { "ATX +12V (4-pin)",    8, 0, 60, 1, 0 },
 404                { "ATX +5V",             9, 0, 30, 1, 0 },
 405                { "+3.3V",              10, 0, 20, 1, 0 },
 406                { "5VSB",               11, 0, 30, 1, 0 },
 407                { "CPU",                24, 1, 1, 1, 0 },
 408                { "System",             25, 1, 1, 1, 0 },
 409                { "PWM",                26, 1, 1, 1, 0 },
 410                { "CPU Fan",            32, 2, 60, 1, 0 },
 411                { "NB Fan",             33, 2, 60, 1, 0 },
 412                { "SYS Fan",            34, 2, 60, 1, 0 },
 413                { NULL, 0, 0, 0, 0, 0 } }
 414        },
 415        { 0x0015, { NULL } /* Unknown, need DMI string */, {
 416                { "CPU Core",            0, 0, 10, 1, 0 },
 417                { "DDR",                 1, 0, 20, 1, 0 },
 418                { "DDR VTT",             2, 0, 10, 1, 0 },
 419                { "HyperTransport",      3, 0, 10, 1, 0 },
 420                { "CPU VDDA 2.5V",       5, 0, 20, 1, 0 },
 421                { "NB",                  4, 0, 10, 1, 0 },
 422                { "SB",                  6, 0, 10, 1, 0 },
 423                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 424                { "ATX +12V (4-pin)",    8, 0, 60, 1, 0 },
 425                { "ATX +5V",             9, 0, 30, 1, 0 },
 426                { "+3.3V",              10, 0, 20, 1, 0 },
 427                { "5VSB",               11, 0, 30, 1, 0 },
 428                { "CPU",                24, 1, 1, 1, 0 },
 429                { "SYS",                25, 1, 1, 1, 0 },
 430                { "PWM",                26, 1, 1, 1, 0 },
 431                { "CPU Fan",            32, 2, 60, 1, 0 },
 432                { "NB Fan",             33, 2, 60, 1, 0 },
 433                { "SYS Fan",            34, 2, 60, 1, 0 },
 434                { "AUX1 Fan",           33, 2, 60, 1, 0 },
 435                { "AUX2 Fan",           35, 2, 60, 1, 0 },
 436                { "AUX3 Fan",           36, 2, 60, 1, 0 },
 437                { NULL, 0, 0, 0, 0, 0 } }
 438        },
 439        { 0x0016, { "AW9D-MAX", NULL }, {
 440                { "CPU Core",            0, 0, 10, 1, 0 },
 441                { "DDR2",                1, 0, 20, 1, 0 },
 442                { "DDR2 VTT",            2, 0, 10, 1, 0 },
 443                { "CPU VTT 1.2V",        3, 0, 10, 1, 0 },
 444                { "MCH & PCIE 1.5V",     4, 0, 10, 1, 0 },
 445                { "MCH 2.5V",            5, 0, 20, 1, 0 },
 446                { "ICH 1.05V",           6, 0, 10, 1, 0 },
 447                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 448                { "ATX +12V (4-pin)",    8, 0, 60, 1, 0 },
 449                { "ATX +5V",             9, 0, 30, 1, 0 },
 450                { "+3.3V",              10, 0, 20, 1, 0 },
 451                { "5VSB",               11, 0, 30, 1, 0 },
 452                { "CPU",                24, 1, 1, 1, 0 },
 453                { "System",             25, 1, 1, 1, 0 },
 454                { "PWM1",               26, 1, 1, 1, 0 },
 455                { "PWM2",               27, 1, 1, 1, 0 },
 456                { "PWM3",               28, 1, 1, 1, 0 },
 457                { "PWM4",               29, 1, 1, 1, 0 },
 458                { "CPU Fan",            32, 2, 60, 1, 0 },
 459                { "NB Fan",             33, 2, 60, 1, 0 },
 460                { "SYS Fan",            34, 2, 60, 1, 0 },
 461                { "AUX1 Fan",           35, 2, 60, 1, 0 },
 462                { "AUX2 Fan",           36, 2, 60, 1, 0 },
 463                { "AUX3 Fan",           37, 2, 60, 1, 0 },
 464                { "OTES1 Fan",          38, 2, 60, 1, 0 },
 465                { NULL, 0, 0, 0, 0, 0 } }
 466        },
 467        { 0x0017, { NULL } /* Unknown, need DMI string */, {
 468                { "CPU Core",            0, 0, 10, 1, 0 },
 469                { "DDR2",                1, 0, 20, 1, 0 },
 470                { "DDR2 VTT",            2, 0, 10, 1, 0 },
 471                { "HyperTransport",      3, 0, 10, 1, 0 },
 472                { "CPU VDDA 2.5V",       6, 0, 20, 1, 0 },
 473                { "NB 1.8V",             4, 0, 10, 1, 0 },
 474                { "NB 1.2V ",           13, 0, 10, 1, 0 },
 475                { "SB 1.2V",             5, 0, 10, 1, 0 },
 476                { "PCIE 1.2V",          12, 0, 10, 1, 0 },
 477                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 478                { "ATX +12V (4-pin)",    8, 0, 60, 1, 0 },
 479                { "ATX +5V",             9, 0, 30, 1, 0 },
 480                { "ATX +3.3V",          10, 0, 20, 1, 0 },
 481                { "ATX 5VSB",           11, 0, 30, 1, 0 },
 482                { "CPU",                24, 1, 1, 1, 0 },
 483                { "System",             26, 1, 1, 1, 0 },
 484                { "PWM",                27, 1, 1, 1, 0 },
 485                { "CPU FAN",            32, 2, 60, 1, 0 },
 486                { "SYS FAN",            34, 2, 60, 1, 0 },
 487                { "AUX1 FAN",           35, 2, 60, 1, 0 },
 488                { "AUX2 FAN",           36, 2, 60, 1, 0 },
 489                { "AUX3 FAN",           37, 2, 60, 1, 0 },
 490                { NULL, 0, 0, 0, 0, 0 } }
 491        },
 492        { 0x0018, { "AB9 QuadGT", NULL }, {
 493                { "CPU Core",            0, 0, 10, 1, 0 },
 494                { "DDR2",                1, 0, 20, 1, 0 },
 495                { "DDR2 VTT",            2, 0, 10, 1, 0 },
 496                { "CPU VTT",             3, 0, 10, 1, 0 },
 497                { "MCH 1.25V",           4, 0, 10, 1, 0 },
 498                { "ICHIO 1.5V",          5, 0, 10, 1, 0 },
 499                { "ICH 1.05V",           6, 0, 10, 1, 0 },
 500                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 501                { "ATX +12V (4-pin)",    8, 0, 60, 1, 0 },
 502                { "ATX +5V",             9, 0, 30, 1, 0 },
 503                { "+3.3V",              10, 0, 20, 1, 0 },
 504                { "5VSB",               11, 0, 30, 1, 0 },
 505                { "CPU",                24, 1, 1, 1, 0 },
 506                { "System",             25, 1, 1, 1, 0 },
 507                { "PWM Phase1",         26, 1, 1, 1, 0 },
 508                { "PWM Phase2",         27, 1, 1, 1, 0 },
 509                { "PWM Phase3",         28, 1, 1, 1, 0 },
 510                { "PWM Phase4",         29, 1, 1, 1, 0 },
 511                { "PWM Phase5",         30, 1, 1, 1, 0 },
 512                { "CPU Fan",            32, 2, 60, 1, 0 },
 513                { "SYS Fan",            34, 2, 60, 1, 0 },
 514                { "AUX1 Fan",           33, 2, 60, 1, 0 },
 515                { "AUX2 Fan",           35, 2, 60, 1, 0 },
 516                { "AUX3 Fan",           36, 2, 60, 1, 0 },
 517                { NULL, 0, 0, 0, 0, 0 } }
 518        },
 519        { 0x0019, { "IN9 32X MAX", NULL }, {
 520                { "CPU Core",            7, 0, 10, 1, 0 },
 521                { "DDR2",               13, 0, 20, 1, 0 },
 522                { "DDR2 VTT",           14, 0, 10, 1, 0 },
 523                { "CPU VTT",             3, 0, 20, 1, 0 },
 524                { "NB 1.2V",             4, 0, 10, 1, 0 },
 525                { "SB 1.5V",             6, 0, 10, 1, 0 },
 526                { "HyperTransport",      5, 0, 10, 1, 0 },
 527                { "ATX +12V (24-Pin)",  12, 0, 60, 1, 0 },
 528                { "ATX +12V (4-pin)",    8, 0, 60, 1, 0 },
 529                { "ATX +5V",             9, 0, 30, 1, 0 },
 530                { "ATX +3.3V",          10, 0, 20, 1, 0 },
 531                { "ATX 5VSB",           11, 0, 30, 1, 0 },
 532                { "CPU",                24, 1, 1, 1, 0 },
 533                { "System",             25, 1, 1, 1, 0 },
 534                { "PWM Phase1",         26, 1, 1, 1, 0 },
 535                { "PWM Phase2",         27, 1, 1, 1, 0 },
 536                { "PWM Phase3",         28, 1, 1, 1, 0 },
 537                { "PWM Phase4",         29, 1, 1, 1, 0 },
 538                { "PWM Phase5",         30, 1, 1, 1, 0 },
 539                { "CPU FAN",            32, 2, 60, 1, 0 },
 540                { "SYS FAN",            34, 2, 60, 1, 0 },
 541                { "AUX1 FAN",           33, 2, 60, 1, 0 },
 542                { "AUX2 FAN",           35, 2, 60, 1, 0 },
 543                { "AUX3 FAN",           36, 2, 60, 1, 0 },
 544                { NULL, 0, 0, 0, 0, 0 } }
 545        },
 546        { 0x001A, { "IP35 Pro", "IP35 Pro XE", NULL }, {
 547                { "CPU Core",            0, 0, 10, 1, 0 },
 548                { "DDR2",                1, 0, 20, 1, 0 },
 549                { "DDR2 VTT",            2, 0, 10, 1, 0 },
 550                { "CPU VTT 1.2V",        3, 0, 10, 1, 0 },
 551                { "MCH 1.25V",           4, 0, 10, 1, 0 },
 552                { "ICHIO 1.5V",          5, 0, 10, 1, 0 },
 553                { "ICH 1.05V",           6, 0, 10, 1, 0 },
 554                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 555                { "ATX +12V (8-pin)",    8, 0, 60, 1, 0 },
 556                { "ATX +5V",             9, 0, 30, 1, 0 },
 557                { "+3.3V",              10, 0, 20, 1, 0 },
 558                { "5VSB",               11, 0, 30, 1, 0 },
 559                { "CPU",                24, 1, 1, 1, 0 },
 560                { "System",             25, 1, 1, 1, 0 },
 561                { "PWM",                26, 1, 1, 1, 0 },
 562                { "PWM Phase2",         27, 1, 1, 1, 0 },
 563                { "PWM Phase3",         28, 1, 1, 1, 0 },
 564                { "PWM Phase4",         29, 1, 1, 1, 0 },
 565                { "PWM Phase5",         30, 1, 1, 1, 0 },
 566                { "CPU Fan",            32, 2, 60, 1, 0 },
 567                { "SYS Fan",            34, 2, 60, 1, 0 },
 568                { "AUX1 Fan",           33, 2, 60, 1, 0 },
 569                { "AUX2 Fan",           35, 2, 60, 1, 0 },
 570                { "AUX3 Fan",           36, 2, 60, 1, 0 },
 571                { "AUX4 Fan",           37, 2, 60, 1, 0 },
 572                { NULL, 0, 0, 0, 0, 0 } }
 573        },
 574        { 0x001B, { NULL } /* Unknown, need DMI string */, {
 575                { "CPU Core",            0, 0, 10, 1, 0 },
 576                { "DDR3",                1, 0, 20, 1, 0 },
 577                { "DDR3 VTT",            2, 0, 10, 1, 0 },
 578                { "CPU VTT",             3, 0, 10, 1, 0 },
 579                { "MCH 1.25V",           4, 0, 10, 1, 0 },
 580                { "ICHIO 1.5V",          5, 0, 10, 1, 0 },
 581                { "ICH 1.05V",           6, 0, 10, 1, 0 },
 582                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 583                { "ATX +12V (8-pin)",    8, 0, 60, 1, 0 },
 584                { "ATX +5V",             9, 0, 30, 1, 0 },
 585                { "+3.3V",              10, 0, 20, 1, 0 },
 586                { "5VSB",               11, 0, 30, 1, 0 },
 587                { "CPU",                24, 1, 1, 1, 0 },
 588                { "System",             25, 1, 1, 1, 0 },
 589                { "PWM Phase1",         26, 1, 1, 1, 0 },
 590                { "PWM Phase2",         27, 1, 1, 1, 0 },
 591                { "PWM Phase3",         28, 1, 1, 1, 0 },
 592                { "PWM Phase4",         29, 1, 1, 1, 0 },
 593                { "PWM Phase5",         30, 1, 1, 1, 0 },
 594                { "CPU Fan",            32, 2, 60, 1, 0 },
 595                { "SYS Fan",            34, 2, 60, 1, 0 },
 596                { "AUX1 Fan",           33, 2, 60, 1, 0 },
 597                { "AUX2 Fan",           35, 2, 60, 1, 0 },
 598                { "AUX3 Fan",           36, 2, 60, 1, 0 },
 599                { NULL, 0, 0, 0, 0, 0 } }
 600        },
 601        { 0x001C, { "IX38 QuadGT", NULL }, {
 602                { "CPU Core",            0, 0, 10, 1, 0 },
 603                { "DDR2",                1, 0, 20, 1, 0 },
 604                { "DDR2 VTT",            2, 0, 10, 1, 0 },
 605                { "CPU VTT",             3, 0, 10, 1, 0 },
 606                { "MCH 1.25V",           4, 0, 10, 1, 0 },
 607                { "ICHIO 1.5V",          5, 0, 10, 1, 0 },
 608                { "ICH 1.05V",           6, 0, 10, 1, 0 },
 609                { "ATX +12V (24-Pin)",   7, 0, 60, 1, 0 },
 610                { "ATX +12V (8-pin)",    8, 0, 60, 1, 0 },
 611                { "ATX +5V",             9, 0, 30, 1, 0 },
 612                { "+3.3V",              10, 0, 20, 1, 0 },
 613                { "5VSB",               11, 0, 30, 1, 0 },
 614                { "CPU",                24, 1, 1, 1, 0 },
 615                { "System",             25, 1, 1, 1, 0 },
 616                { "PWM Phase1",         26, 1, 1, 1, 0 },
 617                { "PWM Phase2",         27, 1, 1, 1, 0 },
 618                { "PWM Phase3",         28, 1, 1, 1, 0 },
 619                { "PWM Phase4",         29, 1, 1, 1, 0 },
 620                { "PWM Phase5",         30, 1, 1, 1, 0 },
 621                { "CPU Fan",            32, 2, 60, 1, 0 },
 622                { "SYS Fan",            34, 2, 60, 1, 0 },
 623                { "AUX1 Fan",           33, 2, 60, 1, 0 },
 624                { "AUX2 Fan",           35, 2, 60, 1, 0 },
 625                { "AUX3 Fan",           36, 2, 60, 1, 0 },
 626                { NULL, 0, 0, 0, 0, 0 } }
 627        },
 628        { 0x0000, { NULL }, { { NULL, 0, 0, 0, 0, 0 } } }
 629};
 630
 631
 632/* Insmod parameters */
 633static bool force;
 634module_param(force, bool, 0);
 635MODULE_PARM_DESC(force, "Set to one to force detection.");
 636/* Default verbose is 1, since this driver is still in the testing phase */
 637static bool verbose = 1;
 638module_param(verbose, bool, 0644);
 639MODULE_PARM_DESC(verbose, "Enable/disable verbose error reporting");
 640
 641static const char *never_happen = "This should never happen.";
 642static const char *report_this =
 643        "Please report this to the abituguru3 maintainer (see MAINTAINERS)";
 644
 645/* wait while the uguru is busy (usually after a write) */
 646static int abituguru3_wait_while_busy(struct abituguru3_data *data)
 647{
 648        u8 x;
 649        int timeout = ABIT_UGURU3_WAIT_TIMEOUT;
 650
 651        while ((x = inb_p(data->addr + ABIT_UGURU3_DATA)) &
 652                        ABIT_UGURU3_STATUS_BUSY) {
 653                timeout--;
 654                if (timeout == 0)
 655                        return x;
 656                /*
 657                 * sleep a bit before our last try, to give the uGuru3 one
 658                 * last chance to respond.
 659                 */
 660                if (timeout == 1)
 661                        msleep(1);
 662        }
 663        return ABIT_UGURU3_SUCCESS;
 664}
 665
 666/* wait till uguru is ready to be read */
 667static int abituguru3_wait_for_read(struct abituguru3_data *data)
 668{
 669        u8 x;
 670        int timeout = ABIT_UGURU3_WAIT_TIMEOUT;
 671
 672        while (!((x = inb_p(data->addr + ABIT_UGURU3_DATA)) &
 673                        ABIT_UGURU3_STATUS_READY_FOR_READ)) {
 674                timeout--;
 675                if (timeout == 0)
 676                        return x;
 677                /*
 678                 * sleep a bit before our last try, to give the uGuru3 one
 679                 * last chance to respond.
 680                 */
 681                if (timeout == 1)
 682                        msleep(1);
 683        }
 684        return ABIT_UGURU3_SUCCESS;
 685}
 686
 687/*
 688 * This synchronizes us with the uGuru3's protocol state machine, this
 689 * must be done before each command.
 690 */
 691static int abituguru3_synchronize(struct abituguru3_data *data)
 692{
 693        int x, timeout = ABIT_UGURU3_SYNCHRONIZE_TIMEOUT;
 694
 695        x = abituguru3_wait_while_busy(data);
 696        if (x != ABIT_UGURU3_SUCCESS) {
 697                ABIT_UGURU3_DEBUG("synchronize timeout during initial busy "
 698                        "wait, status: 0x%02x\n", x);
 699                return -EIO;
 700        }
 701
 702        outb(0x20, data->addr + ABIT_UGURU3_DATA);
 703        x = abituguru3_wait_while_busy(data);
 704        if (x != ABIT_UGURU3_SUCCESS) {
 705                ABIT_UGURU3_DEBUG("synchronize timeout after sending 0x20, "
 706                        "status: 0x%02x\n", x);
 707                return -EIO;
 708        }
 709
 710        outb(0x10, data->addr + ABIT_UGURU3_CMD);
 711        x = abituguru3_wait_while_busy(data);
 712        if (x != ABIT_UGURU3_SUCCESS) {
 713                ABIT_UGURU3_DEBUG("synchronize timeout after sending 0x10, "
 714                        "status: 0x%02x\n", x);
 715                return -EIO;
 716        }
 717
 718        outb(0x00, data->addr + ABIT_UGURU3_CMD);
 719        x = abituguru3_wait_while_busy(data);
 720        if (x != ABIT_UGURU3_SUCCESS) {
 721                ABIT_UGURU3_DEBUG("synchronize timeout after sending 0x00, "
 722                        "status: 0x%02x\n", x);
 723                return -EIO;
 724        }
 725
 726        x = abituguru3_wait_for_read(data);
 727        if (x != ABIT_UGURU3_SUCCESS) {
 728                ABIT_UGURU3_DEBUG("synchronize timeout waiting for read, "
 729                        "status: 0x%02x\n", x);
 730                return -EIO;
 731        }
 732
 733        while ((x = inb(data->addr + ABIT_UGURU3_CMD)) != 0xAC) {
 734                timeout--;
 735                if (timeout == 0) {
 736                        ABIT_UGURU3_DEBUG("synchronize timeout cmd does not "
 737                                "hold 0xAC after synchronize, cmd: 0x%02x\n",
 738                                x);
 739                        return -EIO;
 740                }
 741                msleep(1);
 742        }
 743        return 0;
 744}
 745
 746/*
 747 * Read count bytes from sensor sensor_addr in bank bank_addr and store the
 748 * result in buf
 749 */
 750static int abituguru3_read(struct abituguru3_data *data, u8 bank, u8 offset,
 751        u8 count, u8 *buf)
 752{
 753        int i, x;
 754
 755        x = abituguru3_synchronize(data);
 756        if (x)
 757                return x;
 758
 759        outb(0x1A, data->addr + ABIT_UGURU3_DATA);
 760        x = abituguru3_wait_while_busy(data);
 761        if (x != ABIT_UGURU3_SUCCESS) {
 762                ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
 763                        "sending 0x1A, status: 0x%02x\n", (unsigned int)bank,
 764                        (unsigned int)offset, x);
 765                return -EIO;
 766        }
 767
 768        outb(bank, data->addr + ABIT_UGURU3_CMD);
 769        x = abituguru3_wait_while_busy(data);
 770        if (x != ABIT_UGURU3_SUCCESS) {
 771                ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
 772                        "sending the bank, status: 0x%02x\n",
 773                        (unsigned int)bank, (unsigned int)offset, x);
 774                return -EIO;
 775        }
 776
 777        outb(offset, data->addr + ABIT_UGURU3_CMD);
 778        x = abituguru3_wait_while_busy(data);
 779        if (x != ABIT_UGURU3_SUCCESS) {
 780                ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
 781                        "sending the offset, status: 0x%02x\n",
 782                        (unsigned int)bank, (unsigned int)offset, x);
 783                return -EIO;
 784        }
 785
 786        outb(count, data->addr + ABIT_UGURU3_CMD);
 787        x = abituguru3_wait_while_busy(data);
 788        if (x != ABIT_UGURU3_SUCCESS) {
 789                ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
 790                        "sending the count, status: 0x%02x\n",
 791                        (unsigned int)bank, (unsigned int)offset, x);
 792                return -EIO;
 793        }
 794
 795        for (i = 0; i < count; i++) {
 796                x = abituguru3_wait_for_read(data);
 797                if (x != ABIT_UGURU3_SUCCESS) {
 798                        ABIT_UGURU3_DEBUG("timeout reading byte %d from "
 799                                "0x%02x:0x%02x, status: 0x%02x\n", i,
 800                                (unsigned int)bank, (unsigned int)offset, x);
 801                        break;
 802                }
 803                buf[i] = inb(data->addr + ABIT_UGURU3_CMD);
 804        }
 805        return i;
 806}
 807
 808/*
 809 * Sensor settings are stored 1 byte per offset with the bytes
 810 * placed add consecutive offsets.
 811 */
 812static int abituguru3_read_increment_offset(struct abituguru3_data *data,
 813                                            u8 bank, u8 offset, u8 count,
 814                                            u8 *buf, int offset_count)
 815{
 816        int i, x;
 817
 818        for (i = 0; i < offset_count; i++) {
 819                x = abituguru3_read(data, bank, offset + i, count,
 820                                    buf + i * count);
 821                if (x != count) {
 822                        if (x < 0)
 823                                return x;
 824                        return i * count + x;
 825                }
 826        }
 827
 828        return i * count;
 829}
 830
 831/*
 832 * Following are the sysfs callback functions. These functions expect:
 833 * sensor_device_attribute_2->index:   index into the data->sensors array
 834 * sensor_device_attribute_2->nr:      register offset, bitmask or NA.
 835 */
 836static struct abituguru3_data *abituguru3_update_device(struct device *dev);
 837
 838static ssize_t show_value(struct device *dev,
 839        struct device_attribute *devattr, char *buf)
 840{
 841        int value;
 842        struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
 843        struct abituguru3_data *data = abituguru3_update_device(dev);
 844        const struct abituguru3_sensor_info *sensor;
 845
 846        if (!data)
 847                return -EIO;
 848
 849        sensor = &data->sensors[attr->index];
 850
 851        /* are we reading a setting, or is this a normal read? */
 852        if (attr->nr)
 853                value = data->settings[sensor->port][attr->nr];
 854        else
 855                value = data->value[sensor->port];
 856
 857        /* convert the value */
 858        value = (value * sensor->multiplier) / sensor->divisor +
 859                sensor->offset;
 860
 861        /*
 862         * alternatively we could update the sensors settings struct for this,
 863         * but then its contents would differ from the windows sw ini files
 864         */
 865        if (sensor->type == ABIT_UGURU3_TEMP_SENSOR)
 866                value *= 1000;
 867
 868        return sprintf(buf, "%d\n", value);
 869}
 870
 871static ssize_t show_alarm(struct device *dev,
 872        struct device_attribute *devattr, char *buf)
 873{
 874        int port;
 875        struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
 876        struct abituguru3_data *data = abituguru3_update_device(dev);
 877
 878        if (!data)
 879                return -EIO;
 880
 881        port = data->sensors[attr->index].port;
 882
 883        /*
 884         * See if the alarm bit for this sensor is set and if a bitmask is
 885         * given in attr->nr also check if the alarm matches the type of alarm
 886         * we're looking for (for volt it can be either low or high). The type
 887         * is stored in a few readonly bits in the settings of the sensor.
 888         */
 889        if ((data->alarms[port / 8] & (0x01 << (port % 8))) &&
 890                        (!attr->nr || (data->settings[port][0] & attr->nr)))
 891                return sprintf(buf, "1\n");
 892        else
 893                return sprintf(buf, "0\n");
 894}
 895
 896static ssize_t show_mask(struct device *dev,
 897        struct device_attribute *devattr, char *buf)
 898{
 899        struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
 900        struct abituguru3_data *data = dev_get_drvdata(dev);
 901
 902        if (data->settings[data->sensors[attr->index].port][0] & attr->nr)
 903                return sprintf(buf, "1\n");
 904        else
 905                return sprintf(buf, "0\n");
 906}
 907
 908static ssize_t show_label(struct device *dev,
 909        struct device_attribute *devattr, char *buf)
 910{
 911        struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
 912        struct abituguru3_data *data = dev_get_drvdata(dev);
 913
 914        return sprintf(buf, "%s\n", data->sensors[attr->index].name);
 915}
 916
 917static ssize_t show_name(struct device *dev,
 918        struct device_attribute *devattr, char *buf)
 919{
 920        return sprintf(buf, "%s\n", ABIT_UGURU3_NAME);
 921}
 922
 923/* Sysfs attr templates, the real entries are generated automatically. */
 924static const
 925struct sensor_device_attribute_2 abituguru3_sysfs_templ[3][10] = { {
 926        SENSOR_ATTR_2(in%d_input, 0444, show_value, NULL, 0, 0),
 927        SENSOR_ATTR_2(in%d_min, 0444, show_value, NULL, 1, 0),
 928        SENSOR_ATTR_2(in%d_max, 0444, show_value, NULL, 2, 0),
 929        SENSOR_ATTR_2(in%d_min_alarm, 0444, show_alarm, NULL,
 930                ABIT_UGURU3_VOLT_LOW_ALARM_FLAG, 0),
 931        SENSOR_ATTR_2(in%d_max_alarm, 0444, show_alarm, NULL,
 932                ABIT_UGURU3_VOLT_HIGH_ALARM_FLAG, 0),
 933        SENSOR_ATTR_2(in%d_beep, 0444, show_mask, NULL,
 934                ABIT_UGURU3_BEEP_ENABLE, 0),
 935        SENSOR_ATTR_2(in%d_shutdown, 0444, show_mask, NULL,
 936                ABIT_UGURU3_SHUTDOWN_ENABLE, 0),
 937        SENSOR_ATTR_2(in%d_min_alarm_enable, 0444, show_mask, NULL,
 938                ABIT_UGURU3_VOLT_LOW_ALARM_ENABLE, 0),
 939        SENSOR_ATTR_2(in%d_max_alarm_enable, 0444, show_mask, NULL,
 940                ABIT_UGURU3_VOLT_HIGH_ALARM_ENABLE, 0),
 941        SENSOR_ATTR_2(in%d_label, 0444, show_label, NULL, 0, 0)
 942        }, {
 943        SENSOR_ATTR_2(temp%d_input, 0444, show_value, NULL, 0, 0),
 944        SENSOR_ATTR_2(temp%d_max, 0444, show_value, NULL, 1, 0),
 945        SENSOR_ATTR_2(temp%d_crit, 0444, show_value, NULL, 2, 0),
 946        SENSOR_ATTR_2(temp%d_alarm, 0444, show_alarm, NULL, 0, 0),
 947        SENSOR_ATTR_2(temp%d_beep, 0444, show_mask, NULL,
 948                ABIT_UGURU3_BEEP_ENABLE, 0),
 949        SENSOR_ATTR_2(temp%d_shutdown, 0444, show_mask, NULL,
 950                ABIT_UGURU3_SHUTDOWN_ENABLE, 0),
 951        SENSOR_ATTR_2(temp%d_alarm_enable, 0444, show_mask, NULL,
 952                ABIT_UGURU3_TEMP_HIGH_ALARM_ENABLE, 0),
 953        SENSOR_ATTR_2(temp%d_label, 0444, show_label, NULL, 0, 0)
 954        }, {
 955        SENSOR_ATTR_2(fan%d_input, 0444, show_value, NULL, 0, 0),
 956        SENSOR_ATTR_2(fan%d_min, 0444, show_value, NULL, 1, 0),
 957        SENSOR_ATTR_2(fan%d_alarm, 0444, show_alarm, NULL, 0, 0),
 958        SENSOR_ATTR_2(fan%d_beep, 0444, show_mask, NULL,
 959                ABIT_UGURU3_BEEP_ENABLE, 0),
 960        SENSOR_ATTR_2(fan%d_shutdown, 0444, show_mask, NULL,
 961                ABIT_UGURU3_SHUTDOWN_ENABLE, 0),
 962        SENSOR_ATTR_2(fan%d_alarm_enable, 0444, show_mask, NULL,
 963                ABIT_UGURU3_FAN_LOW_ALARM_ENABLE, 0),
 964        SENSOR_ATTR_2(fan%d_label, 0444, show_label, NULL, 0, 0)
 965} };
 966
 967static struct sensor_device_attribute_2 abituguru3_sysfs_attr[] = {
 968        SENSOR_ATTR_2(name, 0444, show_name, NULL, 0, 0),
 969};
 970
 971static int abituguru3_probe(struct platform_device *pdev)
 972{
 973        const int no_sysfs_attr[3] = { 10, 8, 7 };
 974        int sensor_index[3] = { 0, 1, 1 };
 975        struct abituguru3_data *data;
 976        int i, j, type, used, sysfs_names_free, sysfs_attr_i, res = -ENODEV;
 977        char *sysfs_filename;
 978        u8 buf[2];
 979        u16 id;
 980
 981        data = devm_kzalloc(&pdev->dev, sizeof(struct abituguru3_data),
 982                            GFP_KERNEL);
 983        if (!data)
 984                return -ENOMEM;
 985
 986        data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start;
 987        mutex_init(&data->update_lock);
 988        platform_set_drvdata(pdev, data);
 989
 990        /* Read the motherboard ID */
 991        i = abituguru3_read(data, ABIT_UGURU3_MISC_BANK, ABIT_UGURU3_BOARD_ID,
 992                            2, buf);
 993        if (i != 2)
 994                goto abituguru3_probe_error;
 995
 996        /* Completely read the uGuru to see if one really is there */
 997        if (!abituguru3_update_device(&pdev->dev))
 998                goto abituguru3_probe_error;
 999
1000        /* lookup the ID in our motherboard table */
1001        id = ((u16)buf[0] << 8) | (u16)buf[1];
1002        for (i = 0; abituguru3_motherboards[i].id; i++)
1003                if (abituguru3_motherboards[i].id == id)
1004                        break;
1005        if (!abituguru3_motherboards[i].id) {
1006                pr_err("error unknown motherboard ID: %04X. %s\n",
1007                       (unsigned int)id, report_this);
1008                goto abituguru3_probe_error;
1009        }
1010        data->sensors = abituguru3_motherboards[i].sensors;
1011
1012        pr_info("found Abit uGuru3, motherboard ID: %04X\n", (unsigned int)id);
1013
1014        /* Fill the sysfs attr array */
1015        sysfs_attr_i = 0;
1016        sysfs_filename = data->sysfs_names;
1017        sysfs_names_free = ABIT_UGURU3_SYSFS_NAMES_LENGTH;
1018        for (i = 0; data->sensors[i].name; i++) {
1019                /* Fail safe check, this should never happen! */
1020                if (i >= ABIT_UGURU3_MAX_NO_SENSORS) {
1021                        pr_err("Fatal error motherboard has more sensors then ABIT_UGURU3_MAX_NO_SENSORS. %s %s\n",
1022                               never_happen, report_this);
1023                        res = -ENAMETOOLONG;
1024                        goto abituguru3_probe_error;
1025                }
1026                type = data->sensors[i].type;
1027                for (j = 0; j < no_sysfs_attr[type]; j++) {
1028                        used = snprintf(sysfs_filename, sysfs_names_free,
1029                                abituguru3_sysfs_templ[type][j].dev_attr.attr.
1030                                name, sensor_index[type]) + 1;
1031                        data->sysfs_attr[sysfs_attr_i] =
1032                                abituguru3_sysfs_templ[type][j];
1033                        data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name =
1034                                sysfs_filename;
1035                        data->sysfs_attr[sysfs_attr_i].index = i;
1036                        sysfs_filename += used;
1037                        sysfs_names_free -= used;
1038                        sysfs_attr_i++;
1039                }
1040                sensor_index[type]++;
1041        }
1042        /* Fail safe check, this should never happen! */
1043        if (sysfs_names_free < 0) {
1044                pr_err("Fatal error ran out of space for sysfs attr names. %s %s\n",
1045                       never_happen, report_this);
1046                res = -ENAMETOOLONG;
1047                goto abituguru3_probe_error;
1048        }
1049
1050        /* Register sysfs hooks */
1051        for (i = 0; i < sysfs_attr_i; i++)
1052                if (device_create_file(&pdev->dev,
1053                                &data->sysfs_attr[i].dev_attr))
1054                        goto abituguru3_probe_error;
1055        for (i = 0; i < ARRAY_SIZE(abituguru3_sysfs_attr); i++)
1056                if (device_create_file(&pdev->dev,
1057                                &abituguru3_sysfs_attr[i].dev_attr))
1058                        goto abituguru3_probe_error;
1059
1060        data->hwmon_dev = hwmon_device_register(&pdev->dev);
1061        if (IS_ERR(data->hwmon_dev)) {
1062                res = PTR_ERR(data->hwmon_dev);
1063                goto abituguru3_probe_error;
1064        }
1065
1066        return 0; /* success */
1067
1068abituguru3_probe_error:
1069        for (i = 0; data->sysfs_attr[i].dev_attr.attr.name; i++)
1070                device_remove_file(&pdev->dev, &data->sysfs_attr[i].dev_attr);
1071        for (i = 0; i < ARRAY_SIZE(abituguru3_sysfs_attr); i++)
1072                device_remove_file(&pdev->dev,
1073                        &abituguru3_sysfs_attr[i].dev_attr);
1074        return res;
1075}
1076
1077static int abituguru3_remove(struct platform_device *pdev)
1078{
1079        int i;
1080        struct abituguru3_data *data = platform_get_drvdata(pdev);
1081
1082        hwmon_device_unregister(data->hwmon_dev);
1083        for (i = 0; data->sysfs_attr[i].dev_attr.attr.name; i++)
1084                device_remove_file(&pdev->dev, &data->sysfs_attr[i].dev_attr);
1085        for (i = 0; i < ARRAY_SIZE(abituguru3_sysfs_attr); i++)
1086                device_remove_file(&pdev->dev,
1087                        &abituguru3_sysfs_attr[i].dev_attr);
1088        return 0;
1089}
1090
1091static struct abituguru3_data *abituguru3_update_device(struct device *dev)
1092{
1093        int i;
1094        struct abituguru3_data *data = dev_get_drvdata(dev);
1095
1096        mutex_lock(&data->update_lock);
1097        if (!data->valid || time_after(jiffies, data->last_updated + HZ)) {
1098                /* Clear data->valid while updating */
1099                data->valid = 0;
1100                /* Read alarms */
1101                if (abituguru3_read_increment_offset(data,
1102                                ABIT_UGURU3_SETTINGS_BANK,
1103                                ABIT_UGURU3_ALARMS_START,
1104                                1, data->alarms, 48/8) != (48/8))
1105                        goto LEAVE_UPDATE;
1106                /* Read in and temp sensors (3 byte settings / sensor) */
1107                for (i = 0; i < 32; i++) {
1108                        if (abituguru3_read(data, ABIT_UGURU3_SENSORS_BANK,
1109                                        ABIT_UGURU3_VALUES_START + i,
1110                                        1, &data->value[i]) != 1)
1111                                goto LEAVE_UPDATE;
1112                        if (abituguru3_read_increment_offset(data,
1113                                        ABIT_UGURU3_SETTINGS_BANK,
1114                                        ABIT_UGURU3_SETTINGS_START + i * 3,
1115                                        1,
1116                                        data->settings[i], 3) != 3)
1117                                goto LEAVE_UPDATE;
1118                }
1119                /* Read temp sensors (2 byte settings / sensor) */
1120                for (i = 0; i < 16; i++) {
1121                        if (abituguru3_read(data, ABIT_UGURU3_SENSORS_BANK,
1122                                        ABIT_UGURU3_VALUES_START + 32 + i,
1123                                        1, &data->value[32 + i]) != 1)
1124                                goto LEAVE_UPDATE;
1125                        if (abituguru3_read_increment_offset(data,
1126                                        ABIT_UGURU3_SETTINGS_BANK,
1127                                        ABIT_UGURU3_SETTINGS_START + 32 * 3 +
1128                                                i * 2, 1,
1129                                        data->settings[32 + i], 2) != 2)
1130                                goto LEAVE_UPDATE;
1131                }
1132                data->last_updated = jiffies;
1133                data->valid = 1;
1134        }
1135LEAVE_UPDATE:
1136        mutex_unlock(&data->update_lock);
1137        if (data->valid)
1138                return data;
1139        else
1140                return NULL;
1141}
1142
1143#ifdef CONFIG_PM_SLEEP
1144static int abituguru3_suspend(struct device *dev)
1145{
1146        struct abituguru3_data *data = dev_get_drvdata(dev);
1147        /*
1148         * make sure all communications with the uguru3 are done and no new
1149         * ones are started
1150         */
1151        mutex_lock(&data->update_lock);
1152        return 0;
1153}
1154
1155static int abituguru3_resume(struct device *dev)
1156{
1157        struct abituguru3_data *data = dev_get_drvdata(dev);
1158        mutex_unlock(&data->update_lock);
1159        return 0;
1160}
1161
1162static SIMPLE_DEV_PM_OPS(abituguru3_pm, abituguru3_suspend, abituguru3_resume);
1163#define ABIT_UGURU3_PM  (&abituguru3_pm)
1164#else
1165#define ABIT_UGURU3_PM  NULL
1166#endif /* CONFIG_PM */
1167
1168static struct platform_driver abituguru3_driver = {
1169        .driver = {
1170                .owner  = THIS_MODULE,
1171                .name   = ABIT_UGURU3_NAME,
1172                .pm     = ABIT_UGURU3_PM
1173        },
1174        .probe  = abituguru3_probe,
1175        .remove = abituguru3_remove,
1176};
1177
1178static int __init abituguru3_dmi_detect(void)
1179{
1180        const char *board_vendor, *board_name;
1181        int i, err = (force) ? 1 : -ENODEV;
1182        const char *const *dmi_name;
1183        size_t sublen;
1184
1185        board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1186        if (!board_vendor || strcmp(board_vendor, "http://www.abit.com.tw/"))
1187                return err;
1188
1189        board_name = dmi_get_system_info(DMI_BOARD_NAME);
1190        if (!board_name)
1191                return err;
1192
1193        /*
1194         * At the moment, we don't care about the part of the vendor
1195         * DMI string contained in brackets. Truncate the string at
1196         * the first occurrence of a bracket. Trim any trailing space
1197         * from the substring.
1198         */
1199        sublen = strcspn(board_name, "(");
1200        while (sublen > 0 && board_name[sublen - 1] == ' ')
1201                sublen--;
1202
1203        for (i = 0; abituguru3_motherboards[i].id; i++) {
1204                dmi_name = abituguru3_motherboards[i].dmi_name;
1205                for ( ; *dmi_name; dmi_name++) {
1206                        if (strlen(*dmi_name) != sublen)
1207                                continue;
1208                        if (!strncasecmp(board_name, *dmi_name, sublen))
1209                                return 0;
1210                }
1211        }
1212
1213        /* No match found */
1214        return 1;
1215}
1216
1217/*
1218 * FIXME: Manual detection should die eventually; we need to collect stable
1219 *        DMI model names first before we can rely entirely on CONFIG_DMI.
1220 */
1221
1222static int __init abituguru3_detect(void)
1223{
1224        /*
1225         * See if there is an uguru3 there. An idle uGuru3 will hold 0x00 or
1226         * 0x08 at DATA and 0xAC at CMD. Sometimes the uGuru3 will hold 0x05
1227         * or 0x55 at CMD instead, why is unknown.
1228         */
1229        u8 data_val = inb_p(ABIT_UGURU3_BASE + ABIT_UGURU3_DATA);
1230        u8 cmd_val = inb_p(ABIT_UGURU3_BASE + ABIT_UGURU3_CMD);
1231        if (((data_val == 0x00) || (data_val == 0x08)) &&
1232                        ((cmd_val == 0xAC) || (cmd_val == 0x05) ||
1233                         (cmd_val == 0x55)))
1234                return 0;
1235
1236        ABIT_UGURU3_DEBUG("no Abit uGuru3 found, data = 0x%02X, cmd = "
1237                "0x%02X\n", (unsigned int)data_val, (unsigned int)cmd_val);
1238
1239        if (force) {
1240                pr_info("Assuming Abit uGuru3 is present because of \"force\" parameter\n");
1241                return 0;
1242        }
1243
1244        /* No uGuru3 found */
1245        return -ENODEV;
1246}
1247
1248static struct platform_device *abituguru3_pdev;
1249
1250static int __init abituguru3_init(void)
1251{
1252        struct resource res = { .flags = IORESOURCE_IO };
1253        int err;
1254
1255        /* Attempt DMI detection first */
1256        err = abituguru3_dmi_detect();
1257        if (err < 0)
1258                return err;
1259
1260        /*
1261         * Fall back to manual detection if there was no exact
1262         * board name match, or force was specified.
1263         */
1264        if (err > 0) {
1265                err = abituguru3_detect();
1266                if (err)
1267                        return err;
1268
1269                pr_warn("this motherboard was not detected using DMI. "
1270                        "Please send the output of \"dmidecode\" to the abituguru3 maintainer (see MAINTAINERS)\n");
1271        }
1272
1273        err = platform_driver_register(&abituguru3_driver);
1274        if (err)
1275                goto exit;
1276
1277        abituguru3_pdev = platform_device_alloc(ABIT_UGURU3_NAME,
1278                                                ABIT_UGURU3_BASE);
1279        if (!abituguru3_pdev) {
1280                pr_err("Device allocation failed\n");
1281                err = -ENOMEM;
1282                goto exit_driver_unregister;
1283        }
1284
1285        res.start = ABIT_UGURU3_BASE;
1286        res.end = ABIT_UGURU3_BASE + ABIT_UGURU3_REGION_LENGTH - 1;
1287        res.name = ABIT_UGURU3_NAME;
1288
1289        err = platform_device_add_resources(abituguru3_pdev, &res, 1);
1290        if (err) {
1291                pr_err("Device resource addition failed (%d)\n", err);
1292                goto exit_device_put;
1293        }
1294
1295        err = platform_device_add(abituguru3_pdev);
1296        if (err) {
1297                pr_err("Device addition failed (%d)\n", err);
1298                goto exit_device_put;
1299        }
1300
1301        return 0;
1302
1303exit_device_put:
1304        platform_device_put(abituguru3_pdev);
1305exit_driver_unregister:
1306        platform_driver_unregister(&abituguru3_driver);
1307exit:
1308        return err;
1309}
1310
1311static void __exit abituguru3_exit(void)
1312{
1313        platform_device_unregister(abituguru3_pdev);
1314        platform_driver_unregister(&abituguru3_driver);
1315}
1316
1317MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
1318MODULE_DESCRIPTION("Abit uGuru3 Sensor device");
1319MODULE_LICENSE("GPL");
1320
1321module_init(abituguru3_init);
1322module_exit(abituguru3_exit);
1323
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