The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/hid/hidquirk.c

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    1 /* $FreeBSD$ */
    2 /*-
    3  * SPDX-License-Identifier: BSD-2-Clause-NetBSD
    4  *
    5  * Copyright (c) 1998 The NetBSD Foundation, Inc. All rights reserved.
    6  * Copyright (c) 1998 Lennart Augustsson. All rights reserved.
    7  * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
    8  * Copyright (c) 2020 Vladimir Kondratyev <wulf@FreeBSD.org>
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  */
   31 
   32 #include <sys/stdint.h>
   33 #include <sys/stddef.h>
   34 #include <sys/param.h>
   35 #include <sys/queue.h>
   36 #include <sys/types.h>
   37 #include <sys/systm.h>
   38 #include <sys/kernel.h>
   39 #include <sys/bus.h>
   40 #include <sys/module.h>
   41 #include <sys/lock.h>
   42 #include <sys/mutex.h>
   43 #include <sys/condvar.h>
   44 #include <sys/sysctl.h>
   45 #include <sys/sx.h>
   46 #include <sys/unistd.h>
   47 #include <sys/callout.h>
   48 #include <sys/malloc.h>
   49 #include <sys/priv.h>
   50 
   51 #include <dev/evdev/input.h>
   52 
   53 #define HID_DEBUG_VAR hid_debug
   54 #include <dev/hid/hid.h>
   55 #include <dev/hid/hidquirk.h>
   56 #include "usbdevs.h"
   57 
   58 
   59 MODULE_DEPEND(hidquirk, hid, 1, 1, 1);
   60 MODULE_VERSION(hidquirk, 1);
   61 
   62 #define HID_DEV_QUIRKS_MAX 384
   63 #define HID_SUB_QUIRKS_MAX 8
   64 #define HID_QUIRK_ENVROOT "hw.hid.quirk."
   65 
   66 struct hidquirk_entry {
   67         uint16_t bus;
   68         uint16_t vid;
   69         uint16_t pid;
   70         uint16_t lo_rev;
   71         uint16_t hi_rev;
   72         uint16_t quirks[HID_SUB_QUIRKS_MAX];
   73 };
   74 
   75 static struct mtx hidquirk_mtx;
   76 
   77 #define HID_QUIRK_VP(b,v,p,l,h,...) \
   78   { .bus = (b), .vid = (v), .pid = (p), .lo_rev = (l), .hi_rev = (h), \
   79     .quirks = { __VA_ARGS__ } }
   80 #define USB_QUIRK(v,p,l,h,...) \
   81   HID_QUIRK_VP(BUS_USB, USB_VENDOR_##v, USB_PRODUCT_##v##_##p, l, h, __VA_ARGS__)
   82 
   83 static struct hidquirk_entry hidquirks[HID_DEV_QUIRKS_MAX] = {
   84         USB_QUIRK(ASUS, LCM, 0x0000, 0xffff, HQ_HID_IGNORE),
   85         USB_QUIRK(QTRONIX, 980N, 0x110, 0x110, HQ_SPUR_BUT_UP),
   86         USB_QUIRK(ALCOR2, KBD_HUB, 0x001, 0x001, HQ_SPUR_BUT_UP),
   87         USB_QUIRK(LOGITECH, G510S, 0x0000, 0xFFFF, HQ_KBD_BOOTPROTO),
   88         /* Devices which should be ignored by usbhid */
   89         USB_QUIRK(APC, UPS, 0x0000, 0xffff, HQ_HID_IGNORE),
   90         USB_QUIRK(BELKIN, F6H375USB, 0x0000, 0xffff, HQ_HID_IGNORE),
   91         USB_QUIRK(BELKIN, F6C550AVR, 0x0000, 0xffff, HQ_HID_IGNORE),
   92         USB_QUIRK(BELKIN, F6C1250TWRK, 0x0000, 0xffff, HQ_HID_IGNORE),
   93         USB_QUIRK(BELKIN, F6C1500TWRK, 0x0000, 0xffff, HQ_HID_IGNORE),
   94         USB_QUIRK(BELKIN, F6C900UNV, 0x0000, 0xffff, HQ_HID_IGNORE),
   95         USB_QUIRK(BELKIN, F6C100UNV, 0x0000, 0xffff, HQ_HID_IGNORE),
   96         USB_QUIRK(BELKIN, F6C120UNV, 0x0000, 0xffff, HQ_HID_IGNORE),
   97         USB_QUIRK(BELKIN, F6C800UNV, 0x0000, 0xffff, HQ_HID_IGNORE),
   98         USB_QUIRK(BELKIN, F6C1100UNV, 0x0000, 0xffff, HQ_HID_IGNORE),
   99         USB_QUIRK(CYBERPOWER, BC900D, 0x0000, 0xffff, HQ_HID_IGNORE),
  100         USB_QUIRK(CYBERPOWER, 1500CAVRLCD, 0x0000, 0xffff, HQ_HID_IGNORE),
  101         USB_QUIRK(CYBERPOWER, OR2200LCDRM2U, 0x0000, 0xffff, HQ_HID_IGNORE),
  102         USB_QUIRK(DELL2, VARIOUS_UPS, 0x0000, 0xffff, HQ_HID_IGNORE),
  103         USB_QUIRK(CYPRESS, SILVERSHIELD, 0x0000, 0xffff, HQ_HID_IGNORE),
  104         USB_QUIRK(DELORME, EARTHMATE, 0x0000, 0xffff, HQ_HID_IGNORE),
  105         USB_QUIRK(DREAMLINK, DL100B, 0x0000, 0xffff, HQ_HID_IGNORE),
  106         USB_QUIRK(MICROCHIP, PICOLCD20X2, 0x0000, 0xffff, HQ_HID_IGNORE),
  107         USB_QUIRK(MICROCHIP, PICOLCD4X20, 0x0000, 0xffff, HQ_HID_IGNORE),
  108         USB_QUIRK(LIEBERT, POWERSURE_PXT, 0x0000, 0xffff, HQ_HID_IGNORE),
  109         USB_QUIRK(LIEBERT2, PSI1000, 0x0000, 0xffff, HQ_HID_IGNORE),
  110         USB_QUIRK(LIEBERT2, POWERSURE_PSA, 0x0000, 0xffff, HQ_HID_IGNORE),
  111         USB_QUIRK(MGE, UPS1, 0x0000, 0xffff, HQ_HID_IGNORE),
  112         USB_QUIRK(MGE, UPS2, 0x0000, 0xffff, HQ_HID_IGNORE),
  113         USB_QUIRK(POWERCOM, IMPERIAL_SERIES, 0x0000, 0xffff, HQ_HID_IGNORE),
  114         USB_QUIRK(POWERCOM, SMART_KING_PRO, 0x0000, 0xffff, HQ_HID_IGNORE),
  115         USB_QUIRK(POWERCOM, WOW, 0x0000, 0xffff, HQ_HID_IGNORE),
  116         USB_QUIRK(POWERCOM, VANGUARD, 0x0000, 0xffff, HQ_HID_IGNORE),
  117         USB_QUIRK(POWERCOM, BLACK_KNIGHT_PRO, 0x0000, 0xffff, HQ_HID_IGNORE),
  118         USB_QUIRK(TRIPPLITE2, AVR550U, 0x0000, 0xffff, HQ_HID_IGNORE),
  119         USB_QUIRK(TRIPPLITE2, AVR750U, 0x0000, 0xffff, HQ_HID_IGNORE),
  120         USB_QUIRK(TRIPPLITE2, ECO550UPS, 0x0000, 0xffff, HQ_HID_IGNORE),
  121         USB_QUIRK(TRIPPLITE2, T750_INTL, 0x0000, 0xffff, HQ_HID_IGNORE),
  122         USB_QUIRK(TRIPPLITE2, RT_2200_INTL, 0x0000, 0xffff, HQ_HID_IGNORE),
  123         USB_QUIRK(TRIPPLITE2, OMNI1000LCD, 0x0000, 0xffff, HQ_HID_IGNORE),
  124         USB_QUIRK(TRIPPLITE2, OMNI900LCD, 0x0000, 0xffff, HQ_HID_IGNORE),
  125         USB_QUIRK(TRIPPLITE2, SMART_2200RMXL2U, 0x0000, 0xffff, HQ_HID_IGNORE),
  126         USB_QUIRK(TRIPPLITE2, UPS_3014, 0x0000, 0xffff, HQ_HID_IGNORE),
  127         USB_QUIRK(TRIPPLITE2, SU1500RTXL2UA, 0x0000, 0xffff, HQ_HID_IGNORE),
  128         USB_QUIRK(TRIPPLITE2, SU6000RT4U, 0x0000, 0xffff, HQ_HID_IGNORE),
  129         USB_QUIRK(TRIPPLITE2, SU1500RTXL2UA_2, 0x0000, 0xffff, HQ_HID_IGNORE),
  130         USB_QUIRK(APPLE, IPHONE, 0x0000, 0xffff, HQ_HID_IGNORE),
  131         USB_QUIRK(APPLE, IPHONE_3G, 0x0000, 0xffff, HQ_HID_IGNORE),
  132         USB_QUIRK(MEGATEC, UPS, 0x0000, 0xffff, HQ_HID_IGNORE),
  133         /* Devices which should be ignored by both ukbd and uhid */
  134         USB_QUIRK(CYPRESS, WISPY1A, 0x0000, 0xffff, HQ_HID_IGNORE),
  135         USB_QUIRK(METAGEEK, WISPY1B, 0x0000, 0xffff, HQ_HID_IGNORE),
  136         USB_QUIRK(METAGEEK, WISPY24X, 0x0000, 0xffff, HQ_HID_IGNORE),
  137         USB_QUIRK(METAGEEK2, WISPYDBX, 0x0000, 0xffff, HQ_HID_IGNORE),
  138         /* MS keyboards do weird things */
  139         USB_QUIRK(MICROSOFT, NATURAL4000, 0x0000, 0xFFFF, HQ_KBD_BOOTPROTO),
  140         USB_QUIRK(MICROSOFT, WLINTELLIMOUSE, 0x0000, 0xffff, HQ_MS_LEADING_BYTE),
  141         /* Quirk for Corsair Vengeance K60 keyboard */
  142         USB_QUIRK(CORSAIR, K60, 0x0000, 0xffff, HQ_KBD_BOOTPROTO),
  143         /* Quirk for Corsair Gaming K68 keyboard */
  144         USB_QUIRK(CORSAIR, K68, 0x0000, 0xffff, HQ_KBD_BOOTPROTO),
  145         /* Quirk for Corsair Vengeance K70 keyboard */
  146         USB_QUIRK(CORSAIR, K70, 0x0000, 0xffff, HQ_KBD_BOOTPROTO),
  147         /* Quirk for Corsair K70 RGB keyboard */
  148         USB_QUIRK(CORSAIR, K70_RGB, 0x0000, 0xffff, HQ_KBD_BOOTPROTO),
  149         /* Quirk for Corsair STRAFE Gaming keyboard */
  150         USB_QUIRK(CORSAIR, STRAFE, 0x0000, 0xffff, HQ_KBD_BOOTPROTO),
  151         USB_QUIRK(CORSAIR, STRAFE2, 0x0000, 0xffff, HQ_KBD_BOOTPROTO),
  152         /* Holtek USB gaming keyboard */
  153         USB_QUIRK(HOLTEK, F85, 0x0000, 0xffff, HQ_KBD_BOOTPROTO),
  154         /* Quirk for Kensington Slimblade Trackball */
  155         USB_QUIRK(KENSINGTON, SLIMBLADE, 0x0000, 0xffff, HQ_MS_VENDOR_BTN),
  156 };
  157 #undef HID_QUIRK_VP
  158 #undef USB_QUIRK
  159 
  160 /* hidquirk.h exposes only HID_QUIRK_LIST macro when HQ() is defined */
  161 #define HQ(x)   [HQ_##x] = "HQ_"#x
  162 #include "hidquirk.h"
  163 static const char *hidquirk_str[HID_QUIRK_MAX] = { HID_QUIRK_LIST() };
  164 #undef HQ
  165 
  166 static hid_test_quirk_t hid_test_quirk_by_info;
  167 
  168 /*------------------------------------------------------------------------*
  169  *      hidquirkstr
  170  *
  171  * This function converts an USB quirk code into a string.
  172  *------------------------------------------------------------------------*/
  173 static const char *
  174 hidquirkstr(uint16_t quirk)
  175 {
  176         return ((quirk < HID_QUIRK_MAX && hidquirk_str[quirk] != NULL) ?
  177             hidquirk_str[quirk] : "HQ_UNKNOWN");
  178 }
  179 
  180 /*------------------------------------------------------------------------*
  181  *      hid_strquirk
  182  *
  183  * This function converts a string into a HID quirk code.
  184  *
  185  * Returns:
  186  * Less than HID_QUIRK_MAX: Quirk code
  187  * Else: Quirk code not found
  188  *------------------------------------------------------------------------*/
  189 static uint16_t
  190 hid_strquirk(const char *str, size_t len)
  191 {
  192         const char *quirk;
  193         uint16_t x;
  194 
  195         for (x = 0; x != HID_QUIRK_MAX; x++) {
  196                 quirk = hidquirkstr(x);
  197                 if (strncmp(str, quirk, len) == 0 &&
  198                     quirk[len] == 0)
  199                         break;
  200         }
  201         return (x);
  202 }
  203 
  204 /*------------------------------------------------------------------------*
  205  *      hid_test_quirk_by_info
  206  *
  207  * Returns:
  208  * false: Quirk not found
  209  * true: Quirk found
  210  *------------------------------------------------------------------------*/
  211 bool
  212 hid_test_quirk_by_info(const struct hid_device_info *info, uint16_t quirk)
  213 {
  214         uint16_t x;
  215         uint16_t y;
  216 
  217         if (quirk == HQ_NONE)
  218                 goto done;
  219 
  220         mtx_lock(&hidquirk_mtx);
  221 
  222         for (x = 0; x != HID_DEV_QUIRKS_MAX; x++) {
  223                 /* see if quirk information does not match */
  224                 if ((hidquirks[x].bus != info->idBus) ||
  225                     (hidquirks[x].vid != info->idVendor) ||
  226                     (hidquirks[x].lo_rev > info->idVersion) ||
  227                     (hidquirks[x].hi_rev < info->idVersion)) {
  228                         continue;
  229                 }
  230                 /* see if quirk only should match vendor ID */
  231                 if (hidquirks[x].pid != info->idProduct) {
  232                         if (hidquirks[x].pid != 0)
  233                                 continue;
  234 
  235                         for (y = 0; y != HID_SUB_QUIRKS_MAX; y++) {
  236                                 if (hidquirks[x].quirks[y] == HQ_MATCH_VENDOR_ONLY)
  237                                         break;
  238                         }
  239                         if (y == HID_SUB_QUIRKS_MAX)
  240                                 continue;
  241                 }
  242                 /* lookup quirk */
  243                 for (y = 0; y != HID_SUB_QUIRKS_MAX; y++) {
  244                         if (hidquirks[x].quirks[y] == quirk) {
  245                                 mtx_unlock(&hidquirk_mtx);
  246                                 DPRINTF("Found quirk '%s'.\n", hidquirkstr(quirk));
  247                                 return (true);
  248                         }
  249                 }
  250         }
  251         mtx_unlock(&hidquirk_mtx);
  252 done:
  253         return (false);                 /* no quirk match */
  254 }
  255 
  256 static struct hidquirk_entry *
  257 hidquirk_get_entry(uint16_t bus, uint16_t vid, uint16_t pid,
  258     uint16_t lo_rev, uint16_t hi_rev, uint8_t do_alloc)
  259 {
  260         uint16_t x;
  261 
  262         mtx_assert(&hidquirk_mtx, MA_OWNED);
  263 
  264         if ((bus | vid | pid | lo_rev | hi_rev) == 0) {
  265                 /* all zero - special case */
  266                 return (hidquirks + HID_DEV_QUIRKS_MAX - 1);
  267         }
  268         /* search for an existing entry */
  269         for (x = 0; x != HID_DEV_QUIRKS_MAX; x++) {
  270                 /* see if quirk information does not match */
  271                 if ((hidquirks[x].bus != bus) ||
  272                     (hidquirks[x].vid != vid) ||
  273                     (hidquirks[x].pid != pid) ||
  274                     (hidquirks[x].lo_rev != lo_rev) ||
  275                     (hidquirks[x].hi_rev != hi_rev)) {
  276                         continue;
  277                 }
  278                 return (hidquirks + x);
  279         }
  280 
  281         if (do_alloc == 0) {
  282                 /* no match */
  283                 return (NULL);
  284         }
  285         /* search for a free entry */
  286         for (x = 0; x != HID_DEV_QUIRKS_MAX; x++) {
  287                 /* see if quirk information does not match */
  288                 if ((hidquirks[x].bus |
  289                     hidquirks[x].vid |
  290                     hidquirks[x].pid |
  291                     hidquirks[x].lo_rev |
  292                     hidquirks[x].hi_rev) != 0) {
  293                         continue;
  294                 }
  295                 hidquirks[x].bus = bus;
  296                 hidquirks[x].vid = vid;
  297                 hidquirks[x].pid = pid;
  298                 hidquirks[x].lo_rev = lo_rev;
  299                 hidquirks[x].hi_rev = hi_rev;
  300 
  301                 return (hidquirks + x);
  302         }
  303 
  304         /* no entry found */
  305         return (NULL);
  306 }
  307 
  308 /*------------------------------------------------------------------------*
  309  *      usb_quirk_strtou16
  310  *
  311  * Helper function to scan a 16-bit integer.
  312  *------------------------------------------------------------------------*/
  313 static uint16_t
  314 hidquirk_strtou16(const char **pptr, const char *name, const char *what)
  315 {
  316         unsigned long value;
  317         char *end;
  318 
  319         value = strtoul(*pptr, &end, 0);
  320         if (value > 65535 || *pptr == end || (*end != ' ' && *end != '\t')) {
  321                 printf("%s: %s 16-bit %s value set to zero\n",
  322                     name, what, *end == 0 ? "incomplete" : "invalid");
  323                 return (0);
  324         }
  325         *pptr = end + 1;
  326         return ((uint16_t)value);
  327 }
  328 
  329 /*------------------------------------------------------------------------*
  330  *      usb_quirk_add_entry_from_str
  331  *
  332  * Add a USB quirk entry from string.
  333  *     "VENDOR PRODUCT LO_REV HI_REV QUIRK[,QUIRK[,...]]"
  334  *------------------------------------------------------------------------*/
  335 static void
  336 hidquirk_add_entry_from_str(const char *name, const char *env)
  337 {
  338         struct hidquirk_entry entry = { };
  339         struct hidquirk_entry *new;
  340         uint16_t quirk_idx;
  341         uint16_t quirk;
  342         const char *end;
  343 
  344         /* check for invalid environment variable */
  345         if (name == NULL || env == NULL)
  346                 return;
  347 
  348         if (bootverbose)
  349                 printf("Adding HID QUIRK '%s' = '%s'\n", name, env);
  350 
  351         /* parse device information */
  352         entry.bus = hidquirk_strtou16(&env, name, "Bus ID");
  353         entry.vid = hidquirk_strtou16(&env, name, "Vendor ID");
  354         entry.pid = hidquirk_strtou16(&env, name, "Product ID");
  355         entry.lo_rev = hidquirk_strtou16(&env, name, "Low revision");
  356         entry.hi_rev = hidquirk_strtou16(&env, name, "High revision");
  357 
  358         /* parse quirk information */
  359         quirk_idx = 0;
  360         while (*env != 0 && quirk_idx != HID_SUB_QUIRKS_MAX) {
  361                 /* skip whitespace before quirks */
  362                 while (*env == ' ' || *env == '\t')
  363                         env++;
  364 
  365                 /* look for quirk separation character */
  366                 end = strchr(env, ',');
  367                 if (end == NULL)
  368                         end = env + strlen(env);
  369 
  370                 /* lookup quirk in string table */
  371                 quirk = hid_strquirk(env, end - env);
  372                 if (quirk < HID_QUIRK_MAX) {
  373                         entry.quirks[quirk_idx++] = quirk;
  374                 } else {
  375                         printf("%s: unknown HID quirk '%.*s' (skipped)\n",
  376                             name, (int)(end - env), env);
  377                 }
  378                 env = end;
  379 
  380                 /* skip quirk delimiter, if any */
  381                 if (*env != 0)
  382                         env++;
  383         }
  384 
  385         /* register quirk */
  386         if (quirk_idx != 0) {
  387                 if (*env != 0) {
  388                         printf("%s: Too many HID quirks, only %d allowed!\n",
  389                             name, HID_SUB_QUIRKS_MAX);
  390                 }
  391                 mtx_lock(&hidquirk_mtx);
  392                 new = hidquirk_get_entry(entry.bus, entry.vid, entry.pid,
  393                     entry.lo_rev, entry.hi_rev, 1);
  394                 if (new == NULL)
  395                         printf("%s: HID quirks table is full!\n", name);
  396                 else
  397                         memcpy(new->quirks, entry.quirks, sizeof(entry.quirks));
  398                 mtx_unlock(&hidquirk_mtx);
  399         } else {
  400                 printf("%s: No USB quirks found!\n", name);
  401         }
  402 }
  403 
  404 static void
  405 hidquirk_init(void *arg)
  406 {
  407         char envkey[sizeof(HID_QUIRK_ENVROOT) + 2];     /* 2 digits max, 0 to 99 */
  408         int i;
  409 
  410         /* initialize mutex */
  411         mtx_init(&hidquirk_mtx, "HID quirk", NULL, MTX_DEF);
  412 
  413         /* look for quirks defined by the environment variable */
  414         for (i = 0; i != 100; i++) {
  415                 snprintf(envkey, sizeof(envkey), HID_QUIRK_ENVROOT "%d", i);
  416 
  417                 /* Stop at first undefined var */
  418                 if (!testenv(envkey))
  419                         break;
  420 
  421                 /* parse environment variable */
  422                 hidquirk_add_entry_from_str(envkey, kern_getenv(envkey));
  423         }
  424 
  425         /* register our function */
  426         hid_test_quirk_p = &hid_test_quirk_by_info;
  427 }
  428 
  429 static void
  430 hidquirk_uninit(void *arg)
  431 {
  432         hid_quirk_unload(arg);
  433 
  434         /* destroy mutex */
  435         mtx_destroy(&hidquirk_mtx);
  436 }
  437 
  438 SYSINIT(hidquirk_init, SI_SUB_LOCK, SI_ORDER_FIRST, hidquirk_init, NULL);
  439 SYSUNINIT(hidquirk_uninit, SI_SUB_LOCK, SI_ORDER_ANY, hidquirk_uninit, NULL);

Cache object: 400c0b95c6041101deed30805d513e01


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