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/12.0/sys/arm/versatile/pl050.c 326258 2017-11-27 15:04:10Z pfg $");
   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/ofw/openfirm.h>
   50 #include <dev/ofw/ofw_bus.h>
   51 #include <dev/ofw/ofw_bus_subr.h>
   52 
   53 #include <sys/ioccom.h>
   54 #include <sys/filio.h>
   55 #include <sys/tty.h>
   56 #include <sys/kbio.h>
   57 
   58 #include <dev/kbd/kbdreg.h>
   59 
   60 #include <machine/bus.h>
   61 
   62 #include <dev/kbd/kbdtables.h>
   63 
   64 #define KMI_LOCK()      mtx_lock(&Giant)
   65 #define KMI_UNLOCK()    mtx_unlock(&Giant)
   66 
   67 #ifdef  INVARIANTS
   68 /*
   69  * Assert that the lock is held in all contexts
   70  * where the code can be executed.
   71  */
   72 #define KMI_LOCK_ASSERT()       mtx_assert(&Giant, MA_OWNED)
   73 /*
   74  * Assert that the lock is held in the contexts
   75  * where it really has to be so.
   76  */
   77 #define KMI_CTX_LOCK_ASSERT()                           \
   78         do {                                            \
   79                 if (!kdb_active && panicstr == NULL)    \
   80                         mtx_assert(&Giant, MA_OWNED);   \
   81         } while (0)
   82 #else
   83 #define KMI_LOCK_ASSERT()       (void)0
   84 #define KMI_CTX_LOCK_ASSERT()   (void)0
   85 #endif
   86 
   87 #define KMICR           0x00
   88 #define         KMICR_TYPE_NONPS2       (1 << 5)
   89 #define         KMICR_RXINTREN          (1 << 4)
   90 #define         KMICR_TXINTREN          (1 << 3)
   91 #define         KMICR_EN                (1 << 2)
   92 #define         KMICR_FKMID             (1 << 1)
   93 #define         KMICR_FKMIC             (1 << 0)
   94 #define KMISTAT         0x04
   95 #define         KMISTAT_TXEMPTY         (1 << 6)
   96 #define         KMISTAT_TXBUSY          (1 << 5)
   97 #define         KMISTAT_RXFULL          (1 << 4)
   98 #define         KMISTAT_RXBUSY          (1 << 3)
   99 #define         KMISTAT_RXPARITY        (1 << 2)
  100 #define         KMISTAT_KMIC            (1 << 1)
  101 #define         KMISTAT_KMID            (1 << 0)
  102 #define KMIDATA         0x08
  103 #define KMICLKDIV       0x0C
  104 #define KMIIR           0x10
  105 #define         KMIIR_TXINTR            (1 << 1)
  106 #define         KMIIR_RXINTR            (1 << 0)
  107 
  108 #define KMI_DRIVER_NAME          "kmi"
  109 #define KMI_NFKEY        (sizeof(fkey_tab)/sizeof(fkey_tab[0])) /* units */
  110 
  111 #define SET_SCANCODE_SET        0xf0
  112 
  113 struct kmi_softc {
  114         device_t sc_dev;
  115         keyboard_t sc_kbd;
  116         keymap_t sc_keymap;
  117         accentmap_t sc_accmap;
  118         fkeytab_t sc_fkeymap[KMI_NFKEY];
  119 
  120         struct resource*        sc_mem_res;
  121         struct resource*        sc_irq_res;
  122         void*                   sc_intr_hl;
  123 
  124         int                     sc_mode;                /* input mode (K_XLATE,K_RAW,K_CODE) */
  125         int                     sc_state;               /* shift/lock key state */
  126         int                     sc_accents;             /* accent key index (> 0) */
  127         uint32_t                sc_flags;               /* flags */
  128 #define KMI_FLAG_COMPOSE        0x00000001
  129 #define KMI_FLAG_POLLING        0x00000002
  130 
  131         struct                  thread *sc_poll_thread;
  132 };
  133 
  134 /* Read/Write macros for Timer used as timecounter */
  135 #define pl050_kmi_read_4(sc, reg)               \
  136         bus_read_4((sc)->sc_mem_res, (reg))
  137 
  138 #define pl050_kmi_write_4(sc, reg, val) \
  139         bus_write_4((sc)->sc_mem_res, (reg), (val))
  140 
  141 /* prototypes */
  142 static void     kmi_set_leds(struct kmi_softc *, uint8_t);
  143 static int      kmi_set_typematic(keyboard_t *, int);
  144 static uint32_t kmi_read_char(keyboard_t *, int);
  145 static void     kmi_clear_state(keyboard_t *);
  146 static int      kmi_ioctl(keyboard_t *, u_long, caddr_t);
  147 static int      kmi_enable(keyboard_t *);
  148 static int      kmi_disable(keyboard_t *);
  149 
  150 static int      kmi_attached = 0;
  151 
  152 /* early keyboard probe, not supported */
  153 static int
  154 kmi_configure(int flags)
  155 {
  156         return (0);
  157 }
  158 
  159 /* detect a keyboard, not used */
  160 static int
  161 kmi_probe(int unit, void *arg, int flags)
  162 {
  163         return (ENXIO);
  164 }
  165 
  166 /* reset and initialize the device, not used */
  167 static int
  168 kmi_init(int unit, keyboard_t **kbdp, void *arg, int flags)
  169 {
  170         return (ENXIO);
  171 }
  172 
  173 /* test the interface to the device, not used */
  174 static int
  175 kmi_test_if(keyboard_t *kbd)
  176 {
  177         return (0);
  178 }
  179 
  180 /* finish using this keyboard, not used */
  181 static int
  182 kmi_term(keyboard_t *kbd)
  183 {
  184         return (ENXIO);
  185 }
  186 
  187 /* keyboard interrupt routine, not used */
  188 static int
  189 kmi_intr(keyboard_t *kbd, void *arg)
  190 {
  191 
  192         return (0);
  193 }
  194 
  195 /* lock the access to the keyboard, not used */
  196 static int
  197 kmi_lock(keyboard_t *kbd, int lock)
  198 {
  199         return (1);
  200 }
  201 
  202 /*
  203  * Enable the access to the device; until this function is called,
  204  * the client cannot read from the keyboard.
  205  */
  206 static int
  207 kmi_enable(keyboard_t *kbd)
  208 {
  209 
  210         KMI_LOCK();
  211         KBD_ACTIVATE(kbd);
  212         KMI_UNLOCK();
  213 
  214         return (0);
  215 }
  216 
  217 /* disallow the access to the device */
  218 static int
  219 kmi_disable(keyboard_t *kbd)
  220 {
  221 
  222         KMI_LOCK();
  223         KBD_DEACTIVATE(kbd);
  224         KMI_UNLOCK();
  225 
  226         return (0);
  227 }
  228 
  229 /* check if data is waiting */
  230 static int
  231 kmi_check(keyboard_t *kbd)
  232 {
  233         struct kmi_softc *sc = kbd->kb_data;
  234         uint32_t reg;
  235 
  236         KMI_CTX_LOCK_ASSERT();
  237 
  238         if (!KBD_IS_ACTIVE(kbd))
  239                 return (0);
  240 
  241         reg = pl050_kmi_read_4(sc, KMIIR);
  242         return (reg & KMIIR_RXINTR);
  243 }
  244 
  245 /* check if char is waiting */
  246 static int
  247 kmi_check_char_locked(keyboard_t *kbd)
  248 {
  249         KMI_CTX_LOCK_ASSERT();
  250 
  251         if (!KBD_IS_ACTIVE(kbd))
  252                 return (0);
  253 
  254         return (kmi_check(kbd));
  255 }
  256 
  257 static int
  258 kmi_check_char(keyboard_t *kbd)
  259 {
  260         int result;
  261 
  262         KMI_LOCK();
  263         result = kmi_check_char_locked(kbd);
  264         KMI_UNLOCK();
  265 
  266         return (result);
  267 }
  268 
  269 /* read one byte from the keyboard if it's allowed */
  270 /* Currently unused. */
  271 static int
  272 kmi_read(keyboard_t *kbd, int wait)
  273 {
  274         KMI_CTX_LOCK_ASSERT();
  275 
  276         if (!KBD_IS_ACTIVE(kbd))
  277                 return (-1);
  278 
  279         ++(kbd->kb_count);
  280         printf("Implement ME: %s\n", __func__);
  281         return (0);
  282 }
  283 
  284 /* read char from the keyboard */
  285 static uint32_t
  286 kmi_read_char_locked(keyboard_t *kbd, int wait)
  287 {
  288         struct kmi_softc *sc = kbd->kb_data;
  289         uint32_t reg, data;
  290 
  291         KMI_CTX_LOCK_ASSERT();
  292 
  293         if (!KBD_IS_ACTIVE(kbd))
  294                 return (NOKEY);
  295 
  296         reg = pl050_kmi_read_4(sc, KMIIR);
  297         if (reg & KMIIR_RXINTR) {
  298                 data = pl050_kmi_read_4(sc, KMIDATA);
  299                 return (data);
  300         }
  301 
  302         ++kbd->kb_count;
  303         return (NOKEY);
  304 }
  305 
  306 /* Currently wait is always false. */
  307 static uint32_t
  308 kmi_read_char(keyboard_t *kbd, int wait)
  309 {
  310         uint32_t keycode;
  311 
  312         KMI_LOCK();
  313         keycode = kmi_read_char_locked(kbd, wait);
  314         KMI_UNLOCK();
  315 
  316         return (keycode);
  317 }
  318 
  319 /* some useful control functions */
  320 static int
  321 kmi_ioctl_locked(keyboard_t *kbd, u_long cmd, caddr_t arg)
  322 {
  323         struct kmi_softc *sc = kbd->kb_data;
  324         int i;
  325 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
  326     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
  327         int ival;
  328 
  329 #endif
  330 
  331         KMI_LOCK_ASSERT();
  332 
  333         switch (cmd) {
  334         case KDGKBMODE:         /* get keyboard mode */
  335                 *(int *)arg = sc->sc_mode;
  336                 break;
  337 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
  338     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
  339         case _IO('K', 7):
  340                 ival = IOCPARM_IVAL(arg);
  341                 arg = (caddr_t)&ival;
  342                 /* FALLTHROUGH */
  343 #endif
  344         case KDSKBMODE:         /* set keyboard mode */
  345                 switch (*(int *)arg) {
  346                 case K_XLATE:
  347                         if (sc->sc_mode != K_XLATE) {
  348                                 /* make lock key state and LED state match */
  349                                 sc->sc_state &= ~LOCK_MASK;
  350                                 sc->sc_state |= KBD_LED_VAL(kbd);
  351                         }
  352                         /* FALLTHROUGH */
  353                 case K_RAW:
  354                 case K_CODE:
  355                         if (sc->sc_mode != *(int *)arg) {
  356                                 if ((sc->sc_flags & KMI_FLAG_POLLING) == 0)
  357                                         kmi_clear_state(kbd);
  358                                 sc->sc_mode = *(int *)arg;
  359                         }
  360                         break;
  361                 default:
  362                         return (EINVAL);
  363                 }
  364                 break;
  365 
  366         case KDGETLED:                  /* get keyboard LED */
  367                 *(int *)arg = KBD_LED_VAL(kbd);
  368                 break;
  369 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
  370     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
  371         case _IO('K', 66):
  372                 ival = IOCPARM_IVAL(arg);
  373                 arg = (caddr_t)&ival;
  374                 /* FALLTHROUGH */
  375 #endif
  376         case KDSETLED:                  /* set keyboard LED */
  377                 /* NOTE: lock key state in "sc_state" won't be changed */
  378                 if (*(int *)arg & ~LOCK_MASK)
  379                         return (EINVAL);
  380 
  381                 i = *(int *)arg;
  382 
  383                 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */
  384                 if (sc->sc_mode == K_XLATE &&
  385                     kbd->kb_keymap->n_keys > ALTGR_OFFSET) {
  386                         if (i & ALKED)
  387                                 i |= CLKED;
  388                         else
  389                                 i &= ~CLKED;
  390                 }
  391                 if (KBD_HAS_DEVICE(kbd))
  392                         kmi_set_leds(sc, i);
  393 
  394                 KBD_LED_VAL(kbd) = *(int *)arg;
  395                 break;
  396         case KDGKBSTATE:                /* get lock key state */
  397                 *(int *)arg = sc->sc_state & LOCK_MASK;
  398                 break;
  399 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
  400     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
  401         case _IO('K', 20):
  402                 ival = IOCPARM_IVAL(arg);
  403                 arg = (caddr_t)&ival;
  404                 /* FALLTHROUGH */
  405 #endif
  406         case KDSKBSTATE:                /* set lock key state */
  407                 if (*(int *)arg & ~LOCK_MASK) {
  408                         return (EINVAL);
  409                 }
  410                 sc->sc_state &= ~LOCK_MASK;
  411                 sc->sc_state |= *(int *)arg;
  412 
  413                 /* set LEDs and quit */
  414                 return (kmi_ioctl(kbd, KDSETLED, arg));
  415 
  416         case KDSETREPEAT:               /* set keyboard repeat rate (new
  417                                          * interface) */
  418                 if (!KBD_HAS_DEVICE(kbd)) {
  419                         return (0);
  420                 }
  421                 if (((int *)arg)[1] < 0) {
  422                         return (EINVAL);
  423                 }
  424                 if (((int *)arg)[0] < 0) {
  425                         return (EINVAL);
  426                 }
  427                 if (((int *)arg)[0] < 200)      /* fastest possible value */
  428                         kbd->kb_delay1 = 200;
  429                 else
  430                         kbd->kb_delay1 = ((int *)arg)[0];
  431                 kbd->kb_delay2 = ((int *)arg)[1];
  432                 return (0);
  433 
  434 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
  435     defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
  436         case _IO('K', 67):
  437                 ival = IOCPARM_IVAL(arg);
  438                 arg = (caddr_t)&ival;
  439                 /* FALLTHROUGH */
  440 #endif
  441         case KDSETRAD:                  /* set keyboard repeat rate (old
  442                                          * interface) */
  443                 return (kmi_set_typematic(kbd, *(int *)arg));
  444 
  445         case PIO_KEYMAP:                /* set keyboard translation table */
  446         case OPIO_KEYMAP:               /* set keyboard translation table
  447                                          * (compat) */
  448         case PIO_KEYMAPENT:             /* set keyboard translation table
  449                                          * entry */
  450         case PIO_DEADKEYMAP:            /* set accent key translation table */
  451                 sc->sc_accents = 0;
  452                 /* FALLTHROUGH */
  453         default:
  454                 return (genkbd_commonioctl(kbd, cmd, arg));
  455         }
  456 
  457         return (0);
  458 }
  459 
  460 static int
  461 kmi_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
  462 {
  463         int result;
  464 
  465         /*
  466          * XXX KDGKBSTATE, KDSKBSTATE and KDSETLED can be called from any
  467          * context where printf(9) can be called, which among other things
  468          * includes interrupt filters and threads with any kinds of locks
  469          * already held.  For this reason it would be dangerous to acquire
  470          * the Giant here unconditionally.  On the other hand we have to
  471          * have it to handle the ioctl.
  472          * So we make our best effort to auto-detect whether we can grab
  473          * the Giant or not.  Blame syscons(4) for this.
  474          */
  475         switch (cmd) {
  476         case KDGKBSTATE:
  477         case KDSKBSTATE:
  478         case KDSETLED:
  479                 if (!mtx_owned(&Giant) && !SCHEDULER_STOPPED())
  480                         return (EDEADLK);       /* best I could come up with */
  481                 /* FALLTHROUGH */
  482         default:
  483                 KMI_LOCK();
  484                 result = kmi_ioctl_locked(kbd, cmd, arg);
  485                 KMI_UNLOCK();
  486                 return (result);
  487         }
  488 }
  489 
  490 /* clear the internal state of the keyboard */
  491 static void
  492 kmi_clear_state(keyboard_t *kbd)
  493 {
  494         struct kmi_softc *sc = kbd->kb_data;
  495 
  496         KMI_CTX_LOCK_ASSERT();
  497 
  498         sc->sc_flags &= ~(KMI_FLAG_COMPOSE | KMI_FLAG_POLLING);
  499         sc->sc_state &= LOCK_MASK;      /* preserve locking key state */
  500         sc->sc_accents = 0;
  501 }
  502 
  503 /* save the internal state, not used */
  504 static int
  505 kmi_get_state(keyboard_t *kbd, void *buf, size_t len)
  506 {
  507         return (len == 0) ? 1 : -1;
  508 }
  509 
  510 /* set the internal state, not used */
  511 static int
  512 kmi_set_state(keyboard_t *kbd, void *buf, size_t len)
  513 {
  514         return (EINVAL);
  515 }
  516 
  517 static int
  518 kmi_poll(keyboard_t *kbd, int on)
  519 {
  520         struct kmi_softc *sc = kbd->kb_data;
  521 
  522         KMI_LOCK();
  523         if (on) {
  524                 sc->sc_flags |= KMI_FLAG_POLLING;
  525                 sc->sc_poll_thread = curthread;
  526         } else {
  527                 sc->sc_flags &= ~KMI_FLAG_POLLING;
  528         }
  529         KMI_UNLOCK();
  530 
  531         return (0);
  532 }
  533 
  534 /* local functions */
  535 
  536 static void
  537 kmi_set_leds(struct kmi_softc *sc, uint8_t leds)
  538 {
  539 
  540         KMI_LOCK_ASSERT();
  541 
  542         /* start transfer, if not already started */
  543         printf("Implement me: %s\n", __func__);
  544 }
  545 
  546 static int
  547 kmi_set_typematic(keyboard_t *kbd, int code)
  548 {
  549         static const int delays[] = {250, 500, 750, 1000};
  550         static const int rates[] = {34, 38, 42, 46, 50, 55, 59, 63,
  551                 68, 76, 84, 92, 100, 110, 118, 126,
  552                 136, 152, 168, 184, 200, 220, 236, 252,
  553         272, 304, 336, 368, 400, 440, 472, 504};
  554 
  555         if (code & ~0x7f) {
  556                 return (EINVAL);
  557         }
  558         kbd->kb_delay1 = delays[(code >> 5) & 3];
  559         kbd->kb_delay2 = rates[code & 0x1f];
  560         return (0);
  561 }
  562 
  563 static keyboard_switch_t kmisw = {
  564         .probe = &kmi_probe,
  565         .init = &kmi_init,
  566         .term = &kmi_term,
  567         .intr = &kmi_intr,
  568         .test_if = &kmi_test_if,
  569         .enable = &kmi_enable,
  570         .disable = &kmi_disable,
  571         .read = &kmi_read,
  572         .check = &kmi_check,
  573         .read_char = &kmi_read_char,
  574         .check_char = &kmi_check_char,
  575         .ioctl = &kmi_ioctl,
  576         .lock = &kmi_lock,
  577         .clear_state = &kmi_clear_state,
  578         .get_state = &kmi_get_state,
  579         .set_state = &kmi_set_state,
  580         .get_fkeystr = &genkbd_get_fkeystr,
  581         .poll = &kmi_poll,
  582         .diag = &genkbd_diag,
  583 };
  584 
  585 KEYBOARD_DRIVER(kmi, kmisw, kmi_configure);
  586 
  587 static void
  588 pl050_kmi_intr(void *arg)
  589 {
  590         struct kmi_softc *sc = arg;
  591         uint32_t c;
  592 
  593         KMI_CTX_LOCK_ASSERT();
  594 
  595         if ((sc->sc_flags & KMI_FLAG_POLLING) != 0)
  596                 return;
  597 
  598         if (KBD_IS_ACTIVE(&sc->sc_kbd) &&
  599             KBD_IS_BUSY(&sc->sc_kbd)) {
  600                 /* let the callback function process the input */
  601                 (sc->sc_kbd.kb_callback.kc_func) (&sc->sc_kbd, KBDIO_KEYINPUT,
  602                     sc->sc_kbd.kb_callback.kc_arg);
  603         } else {
  604                 /* read and discard the input, no one is waiting for it */
  605                 do {
  606                         c = kmi_read_char_locked(&sc->sc_kbd, 0);
  607                 } while (c != NOKEY);
  608         }
  609 
  610 }
  611 
  612 static int
  613 pl050_kmi_probe(device_t dev)
  614 {
  615 
  616         if (!ofw_bus_status_okay(dev))
  617                 return (ENXIO);
  618 
  619         /*
  620          * PL050 is plain PS2 port that pushes bytes to/from computer
  621          * VersatilePB has two such ports and QEMU simulates keyboard
  622          * connected to port #0 and mouse connected to port #1. This
  623          * information can't be obtained from device tree so we just
  624          * hardcode this knowledge here. We attach keyboard driver to
  625          * port #0 and ignore port #1
  626          */
  627         if (kmi_attached)
  628                 return (ENXIO);
  629 
  630         if (ofw_bus_is_compatible(dev, "arm,pl050")) {
  631                 device_set_desc(dev, "PL050 Keyboard/Mouse Interface");
  632                 return (BUS_PROBE_DEFAULT);
  633         }
  634 
  635         return (ENXIO);
  636 }
  637 
  638 static int
  639 pl050_kmi_attach(device_t dev)
  640 {
  641         struct kmi_softc *sc = device_get_softc(dev);
  642         keyboard_t *kbd;
  643         int rid;
  644         int i;
  645         uint32_t ack;
  646 
  647         sc->sc_dev = dev;
  648         kbd = &sc->sc_kbd;
  649         rid = 0;
  650 
  651         sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
  652         if (sc->sc_mem_res == NULL) {
  653                 device_printf(dev, "could not allocate memory resource\n");
  654                 return (ENXIO);
  655         }
  656 
  657         /* Request the IRQ resources */
  658         sc->sc_irq_res =  bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
  659         if (sc->sc_irq_res == NULL) {
  660                 device_printf(dev, "Error: could not allocate irq resources\n");
  661                 return (ENXIO);
  662         }
  663 
  664         /* Setup and enable the timer */
  665         if (bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_CLK,
  666                         NULL, pl050_kmi_intr, sc,
  667                         &sc->sc_intr_hl) != 0) {
  668                 bus_release_resource(dev, SYS_RES_IRQ, rid,
  669                         sc->sc_irq_res);
  670                 device_printf(dev, "Unable to setup the clock irq handler.\n");
  671                 return (ENXIO);
  672         }
  673 
  674         /* TODO: clock & divisor */
  675 
  676         pl050_kmi_write_4(sc, KMICR, KMICR_EN);
  677 
  678         pl050_kmi_write_4(sc, KMIDATA, SET_SCANCODE_SET);
  679         /* read out ACK */
  680         ack = pl050_kmi_read_4(sc, KMIDATA);
  681         /* Set Scan Code set 1 (XT) */
  682         pl050_kmi_write_4(sc, KMIDATA, 1);
  683         /* read out ACK */
  684         ack = pl050_kmi_read_4(sc, KMIDATA);
  685 
  686         pl050_kmi_write_4(sc, KMICR, KMICR_EN | KMICR_RXINTREN);
  687 
  688         kbd_init_struct(kbd, KMI_DRIVER_NAME, KB_OTHER, 
  689                         device_get_unit(dev), 0, 0, 0);
  690         kbd->kb_data = (void *)sc;
  691 
  692         sc->sc_keymap = key_map;
  693         sc->sc_accmap = accent_map;
  694         for (i = 0; i < KMI_NFKEY; i++) {
  695                 sc->sc_fkeymap[i] = fkey_tab[i];
  696         }
  697 
  698         kbd_set_maps(kbd, &sc->sc_keymap, &sc->sc_accmap,
  699             sc->sc_fkeymap, KMI_NFKEY);
  700 
  701         KBD_FOUND_DEVICE(kbd);
  702         kmi_clear_state(kbd);
  703         KBD_PROBE_DONE(kbd);
  704 
  705         KBD_INIT_DONE(kbd);
  706 
  707         if (kbd_register(kbd) < 0) {
  708                 goto detach;
  709         }
  710         KBD_CONFIG_DONE(kbd);
  711 
  712 #ifdef KBD_INSTALL_CDEV
  713         if (kbd_attach(kbd)) {
  714                 goto detach;
  715         }
  716 #endif
  717 
  718         if (bootverbose) {
  719                 genkbd_diag(kbd, bootverbose);
  720         }
  721         kmi_attached = 1;
  722         return (0);
  723 
  724 detach:
  725         return (ENXIO);
  726 
  727 }
  728 
  729 static device_method_t pl050_kmi_methods[] = {
  730         DEVMETHOD(device_probe,         pl050_kmi_probe),
  731         DEVMETHOD(device_attach,        pl050_kmi_attach),
  732         { 0, 0 }
  733 };
  734 
  735 static driver_t pl050_kmi_driver = {
  736         "kmi",
  737         pl050_kmi_methods,
  738         sizeof(struct kmi_softc),
  739 };
  740 
  741 static devclass_t pl050_kmi_devclass;
  742 
  743 DRIVER_MODULE(pl050_kmi, simplebus, pl050_kmi_driver, pl050_kmi_devclass, 0, 0);

Cache object: 17482cff30a76898d9c3c1fc3a6badd8


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