The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/arm/versatile/pl050.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
    5  * All rights reserved.
    6  *
    7  * Based on dev/usb/input/ukbd.c  
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD: releng/11.2/sys/arm/versatile/pl050.c 331402 2018-03-23 01:37:31Z gonzo $");
   33 
   34 #include <sys/param.h>
   35 #include <sys/systm.h>
   36 #include <sys/bus.h>
   37 #include <sys/kernel.h>
   38 #include <sys/module.h>
   39 #include <sys/malloc.h>
   40 #include <sys/rman.h>
   41 #include <sys/proc.h>
   42 #include <sys/sched.h>
   43 #include <sys/kdb.h>
   44 
   45 #include <machine/bus.h>
   46 #include <machine/cpu.h>
   47 #include <machine/intr.h>
   48 
   49 #include <dev/fdt/fdt_common.h>
   50 #include <dev/ofw/openfirm.h>
   51 #include <dev/ofw/ofw_bus.h>
   52 #include <dev/ofw/ofw_bus_subr.h>
   53 
   54 #include <sys/ioccom.h>
   55 #include <sys/filio.h>
   56 #include <sys/tty.h>
   57 #include <sys/kbio.h>
   58 
   59 #include <dev/kbd/kbdreg.h>
   60 
   61 #include <machine/bus.h>
   62 
   63 #include <dev/kbd/kbdtables.h>
   64 
   65 #define KMI_LOCK()      mtx_lock(&Giant)
   66 #define KMI_UNLOCK()    mtx_unlock(&Giant)
   67 
   68 #ifdef  INVARIANTS
   69 /*
   70  * Assert that the lock is held in all contexts
   71  * where the code can be executed.
   72  */
   73 #define KMI_LOCK_ASSERT()       mtx_assert(&Giant, MA_OWNED)
   74 /*
   75  * Assert that the lock is held in the contexts
   76  * where it really has to be so.
   77  */
   78 #define KMI_CTX_LOCK_ASSERT()                           \
   79         do {                                            \
   80                 if (!kdb_active && panicstr == NULL)    \
   81                         mtx_assert(&Giant, MA_OWNED);   \
   82         } while (0)
   83 #else
   84 #define KMI_LOCK_ASSERT()       (void)0
   85 #define KMI_CTX_LOCK_ASSERT()   (void)0
   86 #endif
   87 
   88 #define KMICR           0x00
   89 #define         KMICR_TYPE_NONPS2       (1 << 5)
   90 #define         KMICR_RXINTREN          (1 << 4)
   91 #define         KMICR_TXINTREN          (1 << 3)
   92 #define         KMICR_EN                (1 << 2)
   93 #define         KMICR_FKMID             (1 << 1)
   94 #define         KMICR_FKMIC             (1 << 0)
   95 #define KMISTAT         0x04
   96 #define         KMISTAT_TXEMPTY         (1 << 6)
   97 #define         KMISTAT_TXBUSY          (1 << 5)
   98 #define         KMISTAT_RXFULL          (1 << 4)
   99 #define         KMISTAT_RXBUSY          (1 << 3)
  100 #define         KMISTAT_RXPARITY        (1 << 2)
  101 #define         KMISTAT_KMIC            (1 << 1)
  102 #define         KMISTAT_KMID            (1 << 0)
  103 #define KMIDATA         0x08
  104 #define KMICLKDIV       0x0C
  105 #define KMIIR           0x10
  106 #define         KMIIR_TXINTR            (1 << 1)
  107 #define         KMIIR_RXINTR            (1 << 0)
  108 
  109 #define KMI_DRIVER_NAME          "kmi"
  110 #define KMI_NFKEY        (sizeof(fkey_tab)/sizeof(fkey_tab[0])) /* units */
  111 
  112 #define SET_SCANCODE_SET        0xf0
  113 
  114 struct kmi_softc {
  115         device_t sc_dev;
  116         keyboard_t sc_kbd;
  117         keymap_t sc_keymap;
  118         accentmap_t sc_accmap;
  119         fkeytab_t sc_fkeymap[KMI_NFKEY];
  120 
  121         struct resource*        sc_mem_res;
  122         struct resource*        sc_irq_res;
  123         void*                   sc_intr_hl;
  124 
  125         int                     sc_mode;                /* input mode (K_XLATE,K_RAW,K_CODE) */
  126         int                     sc_state;               /* shift/lock key state */
  127         int                     sc_accents;             /* accent key index (> 0) */
  128         uint32_t                sc_flags;               /* flags */
  129 #define KMI_FLAG_COMPOSE        0x00000001
  130 #define KMI_FLAG_POLLING        0x00000002
  131 
  132         struct                  thread *sc_poll_thread;
  133 };
  134 
  135 /* Read/Write macros for Timer used as timecounter */
  136 #define pl050_kmi_read_4(sc, reg)               \
  137         bus_read_4((sc)->sc_mem_res, (reg))
  138 
  139 #define pl050_kmi_write_4(sc, reg, val) \
  140         bus_write_4((sc)->sc_mem_res, (reg), (val))
  141 
  142 /* prototypes */
  143 static void     kmi_set_leds(struct kmi_softc *, uint8_t);
  144 static int      kmi_set_typematic(keyboard_t *, int);
  145 static uint32_t kmi_read_char(keyboard_t *, int);
  146 static void     kmi_clear_state(keyboard_t *);
  147 static int      kmi_ioctl(keyboard_t *, u_long, caddr_t);
  148 static int      kmi_enable(keyboard_t *);
  149 static int      kmi_disable(keyboard_t *);
  150 
  151 static int      kmi_attached = 0;
  152 
  153 /* early keyboard probe, not supported */
  154 static int
  155 kmi_configure(int flags)
  156 {
  157         return (0);
  158 }
  159 
  160 /* detect a keyboard, not used */
  161 static int
  162 kmi_probe(int unit, void *arg, int flags)
  163 {
  164         return (ENXIO);
  165 }
  166 
  167 /* reset and initialize the device, not used */
  168 static int
  169 kmi_init(int unit, keyboard_t **kbdp, void *arg, int flags)
  170 {
  171         return (ENXIO);
  172 }
  173 
  174 /* test the interface to the device, not used */
  175 static int
  176 kmi_test_if(keyboard_t *kbd)
  177 {
  178         return (0);
  179 }
  180 
  181 /* finish using this keyboard, not used */
  182 static int
  183 kmi_term(keyboard_t *kbd)
  184 {
  185         return (ENXIO);
  186 }
  187 
  188 /* keyboard interrupt routine, not used */
  189 static int
  190 kmi_intr(keyboard_t *kbd, void *arg)
  191 {
  192 
  193         return (0);
  194 }
  195 
  196 /* lock the access to the keyboard, not used */
  197 static int
  198 kmi_lock(keyboard_t *kbd, int lock)
  199 {
  200         return (1);
  201 }
  202 
  203 /*
  204  * Enable the access to the device; until this function is called,
  205  * the client cannot read from the keyboard.
  206  */
  207 static int
  208 kmi_enable(keyboard_t *kbd)
  209 {
  210 
  211         KMI_LOCK();
  212         KBD_ACTIVATE(kbd);
  213         KMI_UNLOCK();
  214 
  215         return (0);
  216 }
  217 
  218 /* disallow the access to the device */
  219 static int
  220 kmi_disable(keyboard_t *kbd)
  221 {
  222 
  223         KMI_LOCK();
  224         KBD_DEACTIVATE(kbd);
  225         KMI_UNLOCK();
  226 
  227         return (0);
  228 }
  229 
  230 /* check if data is waiting */
  231 static int
  232 kmi_check(keyboard_t *kbd)
  233 {
  234         struct kmi_softc *sc = kbd->kb_data;
  235         uint32_t reg;
  236 
  237         KMI_CTX_LOCK_ASSERT();
  238 
  239         if (!KBD_IS_ACTIVE(kbd))
  240                 return (0);
  241 
  242         reg = pl050_kmi_read_4(sc, KMIIR);
  243         return (reg & KMIIR_RXINTR);
  244 }
  245 
  246 /* check if char is waiting */
  247 static int
  248 kmi_check_char_locked(keyboard_t *kbd)
  249 {
  250         KMI_CTX_LOCK_ASSERT();
  251 
  252         if (!KBD_IS_ACTIVE(kbd))
  253                 return (0);
  254 
  255         return (kmi_check(kbd));
  256 }
  257 
  258 static int
  259 kmi_check_char(keyboard_t *kbd)
  260 {
  261         int result;
  262 
  263         KMI_LOCK();
  264         result = kmi_check_char_locked(kbd);
  265         KMI_UNLOCK();
  266 
  267         return (result);
  268 }
  269 
  270 /* read one byte from the keyboard if it's allowed */
  271 /* Currently unused. */
  272 static int
  273 kmi_read(keyboard_t *kbd, int wait)
  274 {
  275         KMI_CTX_LOCK_ASSERT();
  276 
  277         if (!KBD_IS_ACTIVE(kbd))
  278                 return (-1);
  279 
  280         ++(kbd->kb_count);
  281         printf("Implement ME: %s\n", __func__);
  282         return (0);
  283 }
  284 
  285 /* read char from the keyboard */
  286 static uint32_t
  287 kmi_read_char_locked(keyboard_t *kbd, int wait)
  288 {
  289         struct kmi_softc *sc = kbd->kb_data;
  290         uint32_t reg, data;
  291 
  292         KMI_CTX_LOCK_ASSERT();
  293 
  294         if (!KBD_IS_ACTIVE(kbd))
  295                 return (NOKEY);
  296 
  297         reg = pl050_kmi_read_4(sc, KMIIR);
  298         if (reg & KMIIR_RXINTR) {
  299                 data = pl050_kmi_read_4(sc, KMIDATA);
  300                 return (data);
  301         }
  302 
  303         ++kbd->kb_count;
  304         return (NOKEY);
  305 }
  306 
  307 /* Currently wait is always false. */
  308 static uint32_t
  309 kmi_read_char(keyboard_t *kbd, int wait)
  310 {
  311         uint32_t keycode;
  312 
  313         KMI_LOCK();
  314         keycode = kmi_read_char_locked(kbd, wait);
  315         KMI_UNLOCK();
  316 
  317         return (keycode);
  318 }
  319 
  320 /* some useful control functions */
  321 static int
  322 kmi_ioctl_locked(keyboard_t *kbd, u_long cmd, caddr_t arg)
  323 {
  324         struct kmi_softc *sc = kbd->kb_data;
  325         int i;
  326 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
  327     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
  328         int ival;
  329 
  330 #endif
  331 
  332         KMI_LOCK_ASSERT();
  333 
  334         switch (cmd) {
  335         case KDGKBMODE:         /* get keyboard mode */
  336                 *(int *)arg = sc->sc_mode;
  337                 break;
  338 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
  339     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
  340         case _IO('K', 7):
  341                 ival = IOCPARM_IVAL(arg);
  342                 arg = (caddr_t)&ival;
  343                 /* FALLTHROUGH */
  344 #endif
  345         case KDSKBMODE:         /* set keyboard mode */
  346                 switch (*(int *)arg) {
  347                 case K_XLATE:
  348                         if (sc->sc_mode != K_XLATE) {
  349                                 /* make lock key state and LED state match */
  350                                 sc->sc_state &= ~LOCK_MASK;
  351                                 sc->sc_state |= KBD_LED_VAL(kbd);
  352                         }
  353                         /* FALLTHROUGH */
  354                 case K_RAW:
  355                 case K_CODE:
  356                         if (sc->sc_mode != *(int *)arg) {
  357                                 if ((sc->sc_flags & KMI_FLAG_POLLING) == 0)
  358                                         kmi_clear_state(kbd);
  359                                 sc->sc_mode = *(int *)arg;
  360                         }
  361                         break;
  362                 default:
  363                         return (EINVAL);
  364                 }
  365                 break;
  366 
  367         case KDGETLED:                  /* get keyboard LED */
  368                 *(int *)arg = KBD_LED_VAL(kbd);
  369                 break;
  370 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
  371     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
  372         case _IO('K', 66):
  373                 ival = IOCPARM_IVAL(arg);
  374                 arg = (caddr_t)&ival;
  375                 /* FALLTHROUGH */
  376 #endif
  377         case KDSETLED:                  /* set keyboard LED */
  378                 /* NOTE: lock key state in "sc_state" won't be changed */
  379                 if (*(int *)arg & ~LOCK_MASK)
  380                         return (EINVAL);
  381 
  382                 i = *(int *)arg;
  383 
  384                 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */
  385                 if (sc->sc_mode == K_XLATE &&
  386                     kbd->kb_keymap->n_keys > ALTGR_OFFSET) {
  387                         if (i & ALKED)
  388                                 i |= CLKED;
  389                         else
  390                                 i &= ~CLKED;
  391                 }
  392                 if (KBD_HAS_DEVICE(kbd))
  393                         kmi_set_leds(sc, i);
  394 
  395                 KBD_LED_VAL(kbd) = *(int *)arg;
  396                 break;
  397         case KDGKBSTATE:                /* get lock key state */
  398                 *(int *)arg = sc->sc_state & LOCK_MASK;
  399                 break;
  400 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
  401     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
  402         case _IO('K', 20):
  403                 ival = IOCPARM_IVAL(arg);
  404                 arg = (caddr_t)&ival;
  405                 /* FALLTHROUGH */
  406 #endif
  407         case KDSKBSTATE:                /* set lock key state */
  408                 if (*(int *)arg & ~LOCK_MASK) {
  409                         return (EINVAL);
  410                 }
  411                 sc->sc_state &= ~LOCK_MASK;
  412                 sc->sc_state |= *(int *)arg;
  413 
  414                 /* set LEDs and quit */
  415                 return (kmi_ioctl(kbd, KDSETLED, arg));
  416 
  417         case KDSETREPEAT:               /* set keyboard repeat rate (new
  418                                          * interface) */
  419                 if (!KBD_HAS_DEVICE(kbd)) {
  420                         return (0);
  421                 }
  422                 if (((int *)arg)[1] < 0) {
  423                         return (EINVAL);
  424                 }
  425                 if (((int *)arg)[0] < 0) {
  426                         return (EINVAL);
  427                 }
  428                 if (((int *)arg)[0] < 200)      /* fastest possible value */
  429                         kbd->kb_delay1 = 200;
  430                 else
  431                         kbd->kb_delay1 = ((int *)arg)[0];
  432                 kbd->kb_delay2 = ((int *)arg)[1];
  433                 return (0);
  434 
  435 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
  436     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
  437         case _IO('K', 67):
  438                 ival = IOCPARM_IVAL(arg);
  439                 arg = (caddr_t)&ival;
  440                 /* FALLTHROUGH */
  441 #endif
  442         case KDSETRAD:                  /* set keyboard repeat rate (old
  443                                          * interface) */
  444                 return (kmi_set_typematic(kbd, *(int *)arg));
  445 
  446         case PIO_KEYMAP:                /* set keyboard translation table */
  447         case OPIO_KEYMAP:               /* set keyboard translation table
  448                                          * (compat) */
  449         case PIO_KEYMAPENT:             /* set keyboard translation table
  450                                          * entry */
  451         case PIO_DEADKEYMAP:            /* set accent key translation table */
  452                 sc->sc_accents = 0;
  453                 /* FALLTHROUGH */
  454         default:
  455                 return (genkbd_commonioctl(kbd, cmd, arg));
  456         }
  457 
  458         return (0);
  459 }
  460 
  461 static int
  462 kmi_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
  463 {
  464         int result;
  465 
  466         /*
  467          * XXX KDGKBSTATE, KDSKBSTATE and KDSETLED can be called from any
  468          * context where printf(9) can be called, which among other things
  469          * includes interrupt filters and threads with any kinds of locks
  470          * already held.  For this reason it would be dangerous to acquire
  471          * the Giant here unconditionally.  On the other hand we have to
  472          * have it to handle the ioctl.
  473          * So we make our best effort to auto-detect whether we can grab
  474          * the Giant or not.  Blame syscons(4) for this.
  475          */
  476         switch (cmd) {
  477         case KDGKBSTATE:
  478         case KDSKBSTATE:
  479         case KDSETLED:
  480                 if (!mtx_owned(&Giant) && !SCHEDULER_STOPPED())
  481                         return (EDEADLK);       /* best I could come up with */
  482                 /* FALLTHROUGH */
  483         default:
  484                 KMI_LOCK();
  485                 result = kmi_ioctl_locked(kbd, cmd, arg);
  486                 KMI_UNLOCK();
  487                 return (result);
  488         }
  489 }
  490 
  491 /* clear the internal state of the keyboard */
  492 static void
  493 kmi_clear_state(keyboard_t *kbd)
  494 {
  495         struct kmi_softc *sc = kbd->kb_data;
  496 
  497         KMI_CTX_LOCK_ASSERT();
  498 
  499         sc->sc_flags &= ~(KMI_FLAG_COMPOSE | KMI_FLAG_POLLING);
  500         sc->sc_state &= LOCK_MASK;      /* preserve locking key state */
  501         sc->sc_accents = 0;
  502 }
  503 
  504 /* save the internal state, not used */
  505 static int
  506 kmi_get_state(keyboard_t *kbd, void *buf, size_t len)
  507 {
  508         return (len == 0) ? 1 : -1;
  509 }
  510 
  511 /* set the internal state, not used */
  512 static int
  513 kmi_set_state(keyboard_t *kbd, void *buf, size_t len)
  514 {
  515         return (EINVAL);
  516 }
  517 
  518 static int
  519 kmi_poll(keyboard_t *kbd, int on)
  520 {
  521         struct kmi_softc *sc = kbd->kb_data;
  522 
  523         KMI_LOCK();
  524         if (on) {
  525                 sc->sc_flags |= KMI_FLAG_POLLING;
  526                 sc->sc_poll_thread = curthread;
  527         } else {
  528                 sc->sc_flags &= ~KMI_FLAG_POLLING;
  529         }
  530         KMI_UNLOCK();
  531 
  532         return (0);
  533 }
  534 
  535 /* local functions */
  536 
  537 static void
  538 kmi_set_leds(struct kmi_softc *sc, uint8_t leds)
  539 {
  540 
  541         KMI_LOCK_ASSERT();
  542 
  543         /* start transfer, if not already started */
  544         printf("Implement me: %s\n", __func__);
  545 }
  546 
  547 static int
  548 kmi_set_typematic(keyboard_t *kbd, int code)
  549 {
  550         static const int delays[] = {250, 500, 750, 1000};
  551         static const int rates[] = {34, 38, 42, 46, 50, 55, 59, 63,
  552                 68, 76, 84, 92, 100, 110, 118, 126,
  553                 136, 152, 168, 184, 200, 220, 236, 252,
  554         272, 304, 336, 368, 400, 440, 472, 504};
  555 
  556         if (code & ~0x7f) {
  557                 return (EINVAL);
  558         }
  559         kbd->kb_delay1 = delays[(code >> 5) & 3];
  560         kbd->kb_delay2 = rates[code & 0x1f];
  561         return (0);
  562 }
  563 
  564 static keyboard_switch_t kmisw = {
  565         .probe = &kmi_probe,
  566         .init = &kmi_init,
  567         .term = &kmi_term,
  568         .intr = &kmi_intr,
  569         .test_if = &kmi_test_if,
  570         .enable = &kmi_enable,
  571         .disable = &kmi_disable,
  572         .read = &kmi_read,
  573         .check = &kmi_check,
  574         .read_char = &kmi_read_char,
  575         .check_char = &kmi_check_char,
  576         .ioctl = &kmi_ioctl,
  577         .lock = &kmi_lock,
  578         .clear_state = &kmi_clear_state,
  579         .get_state = &kmi_get_state,
  580         .set_state = &kmi_set_state,
  581         .get_fkeystr = &genkbd_get_fkeystr,
  582         .poll = &kmi_poll,
  583         .diag = &genkbd_diag,
  584 };
  585 
  586 KEYBOARD_DRIVER(kmi, kmisw, kmi_configure);
  587 
  588 static void
  589 pl050_kmi_intr(void *arg)
  590 {
  591         struct kmi_softc *sc = arg;
  592         uint32_t c;
  593 
  594         KMI_CTX_LOCK_ASSERT();
  595 
  596         if ((sc->sc_flags & KMI_FLAG_POLLING) != 0)
  597                 return;
  598 
  599         if (KBD_IS_ACTIVE(&sc->sc_kbd) &&
  600             KBD_IS_BUSY(&sc->sc_kbd)) {
  601                 /* let the callback function process the input */
  602                 (sc->sc_kbd.kb_callback.kc_func) (&sc->sc_kbd, KBDIO_KEYINPUT,
  603                     sc->sc_kbd.kb_callback.kc_arg);
  604         } else {
  605                 /* read and discard the input, no one is waiting for it */
  606                 do {
  607                         c = kmi_read_char_locked(&sc->sc_kbd, 0);
  608                 } while (c != NOKEY);
  609         }
  610 
  611 }
  612 
  613 static int
  614 pl050_kmi_probe(device_t dev)
  615 {
  616 
  617         if (!ofw_bus_status_okay(dev))
  618                 return (ENXIO);
  619 
  620         /*
  621          * PL050 is plain PS2 port that pushes bytes to/from computer
  622          * VersatilePB has two such ports and QEMU simulates keyboard
  623          * connected to port #0 and mouse connected to port #1. This
  624          * information can't be obtained from device tree so we just
  625          * hardcode this knowledge here. We attach keyboard driver to
  626          * port #0 and ignore port #1
  627          */
  628         if (kmi_attached)
  629                 return (ENXIO);
  630 
  631         if (ofw_bus_is_compatible(dev, "arm,pl050")) {
  632                 device_set_desc(dev, "PL050 Keyboard/Mouse Interface");
  633                 return (BUS_PROBE_DEFAULT);
  634         }
  635 
  636         return (ENXIO);
  637 }
  638 
  639 static int
  640 pl050_kmi_attach(device_t dev)
  641 {
  642         struct kmi_softc *sc = device_get_softc(dev);
  643         keyboard_t *kbd;
  644         int rid;
  645         int i;
  646         uint32_t ack;
  647 
  648         sc->sc_dev = dev;
  649         kbd = &sc->sc_kbd;
  650         rid = 0;
  651 
  652         sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
  653         if (sc->sc_mem_res == NULL) {
  654                 device_printf(dev, "could not allocate memory resource\n");
  655                 return (ENXIO);
  656         }
  657 
  658         /* Request the IRQ resources */
  659         sc->sc_irq_res =  bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
  660         if (sc->sc_irq_res == NULL) {
  661                 device_printf(dev, "Error: could not allocate irq resources\n");
  662                 return (ENXIO);
  663         }
  664 
  665         /* Setup and enable the timer */
  666         if (bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_CLK,
  667                         NULL, pl050_kmi_intr, sc,
  668                         &sc->sc_intr_hl) != 0) {
  669                 bus_release_resource(dev, SYS_RES_IRQ, rid,
  670                         sc->sc_irq_res);
  671                 device_printf(dev, "Unable to setup the clock irq handler.\n");
  672                 return (ENXIO);
  673         }
  674 
  675         /* TODO: clock & divisor */
  676 
  677         pl050_kmi_write_4(sc, KMICR, KMICR_EN);
  678 
  679         pl050_kmi_write_4(sc, KMIDATA, SET_SCANCODE_SET);
  680         /* read out ACK */
  681         ack = pl050_kmi_read_4(sc, KMIDATA);
  682         /* Set Scan Code set 1 (XT) */
  683         pl050_kmi_write_4(sc, KMIDATA, 1);
  684         /* read out ACK */
  685         ack = pl050_kmi_read_4(sc, KMIDATA);
  686 
  687         pl050_kmi_write_4(sc, KMICR, KMICR_EN | KMICR_RXINTREN);
  688 
  689         kbd_init_struct(kbd, KMI_DRIVER_NAME, KB_OTHER, 
  690                         device_get_unit(dev), 0, 0, 0);
  691         kbd->kb_data = (void *)sc;
  692 
  693         sc->sc_keymap = key_map;
  694         sc->sc_accmap = accent_map;
  695         for (i = 0; i < KMI_NFKEY; i++) {
  696                 sc->sc_fkeymap[i] = fkey_tab[i];
  697         }
  698 
  699         kbd_set_maps(kbd, &sc->sc_keymap, &sc->sc_accmap,
  700             sc->sc_fkeymap, KMI_NFKEY);
  701 
  702         KBD_FOUND_DEVICE(kbd);
  703         kmi_clear_state(kbd);
  704         KBD_PROBE_DONE(kbd);
  705 
  706         KBD_INIT_DONE(kbd);
  707 
  708         if (kbd_register(kbd) < 0) {
  709                 goto detach;
  710         }
  711         KBD_CONFIG_DONE(kbd);
  712 
  713 #ifdef KBD_INSTALL_CDEV
  714         if (kbd_attach(kbd)) {
  715                 goto detach;
  716         }
  717 #endif
  718 
  719         if (bootverbose) {
  720                 genkbd_diag(kbd, bootverbose);
  721         }
  722         kmi_attached = 1;
  723         return (0);
  724 
  725 detach:
  726         return (ENXIO);
  727 
  728 }
  729 
  730 static device_method_t pl050_kmi_methods[] = {
  731         DEVMETHOD(device_probe,         pl050_kmi_probe),
  732         DEVMETHOD(device_attach,        pl050_kmi_attach),
  733         { 0, 0 }
  734 };
  735 
  736 static driver_t pl050_kmi_driver = {
  737         "kmi",
  738         pl050_kmi_methods,
  739         sizeof(struct kmi_softc),
  740 };
  741 
  742 static devclass_t pl050_kmi_devclass;
  743 
  744 DRIVER_MODULE(pl050_kmi, simplebus, pl050_kmi_driver, pl050_kmi_devclass, 0, 0);

Cache object: 0234e9e51252a7eb82ab143ee173fd71


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