2 * Copyright (c) 1996-1999
3 * Kazutaka YOKOTA (yokota@zodiac.mech.utsunomiya-u.ac.jp)
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote
15 * products derived from this software without specific prior written
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
30 * $FreeBSD: src/sys/dev/kbd/atkbdc.c,v 1.5.2.2 2002/03/31 11:02:02 murray Exp $
31 * $DragonFly: src/sys/dev/misc/kbd/atkbdc.c,v 1.11 2007/04/22 10:54:43 y0netan1 Exp $
32 * from kbdio.c,v 1.13 1998/09/25 11:55:46 yokota Exp
36 #include "use_atkbdc.h"
38 #include <sys/param.h>
39 #include <sys/systm.h>
41 #include <sys/malloc.h>
42 #include <sys/syslog.h>
45 #include <machine/clock.h>
47 #include "atkbdcreg.h"
49 #include <bus/isa/isareg.h>
53 #define MAXKBDC MAX(NATKBDC, 1) /* XXX */
58 #define MAX(x, y) ((x) > (y) ? (x) : (y))
61 #define kbdcp(p) ((atkbdc_softc_t *)(p))
62 #define nextq(i) (((i) + 1) % KBDQ_BUFSIZE)
63 #define availq(q) ((q)->head != (q)->tail)
65 #define emptyq(q) ((q)->tail = (q)->head = (q)->qcount = 0)
67 #define emptyq(q) ((q)->tail = (q)->head = 0)
70 #define read_data(k) (bus_space_read_1((k)->iot, (k)->ioh0, 0))
71 #define read_status(k) (bus_space_read_1((k)->iot, (k)->ioh1, 0))
72 #define write_data(k, d) \
73 (bus_space_write_1((k)->iot, (k)->ioh0, 0, (d)))
74 #define write_command(k, d) \
75 (bus_space_write_1((k)->iot, (k)->ioh1, 0, (d)))
80 * We always need at least one copy of the kbdc_softc struct for the
81 * low-level console. As the low-level console accesses the keyboard
82 * controller before kbdc, and all other devices, is probed, we
83 * statically allocate one entry. XXX
85 static atkbdc_softc_t default_kbdc;
86 static atkbdc_softc_t *atkbdc_softc[MAXKBDC] = { &default_kbdc };
88 static int verbose = KBDIO_DEBUG;
90 /* function prototypes */
92 static int atkbdc_setup(atkbdc_softc_t *sc, bus_space_tag_t tag,
93 bus_space_handle_t h0, bus_space_handle_t h1);
94 static int addq(kbdkqueue *q, int c);
95 static int removeq(kbdkqueue *q);
96 static int wait_while_controller_busy(atkbdc_softc_t *kbdc);
97 static int wait_for_data(atkbdc_softc_t *kbdc);
98 static int wait_for_kbd_data(atkbdc_softc_t *kbdc);
99 static int wait_for_kbd_ack(atkbdc_softc_t *kbdc);
100 static int wait_for_aux_data(atkbdc_softc_t *kbdc);
101 static int wait_for_aux_ack(atkbdc_softc_t *kbdc);
104 atkbdc_get_softc(int unit)
108 if (unit >= sizeof(atkbdc_softc)/sizeof(atkbdc_softc[0]))
110 sc = atkbdc_softc[unit];
112 sc = kmalloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO);
113 atkbdc_softc[unit] = sc;
119 atkbdc_probe_unit(int unit, struct resource *port0, struct resource *port1)
121 if (rman_get_start(port0) <= 0)
123 if (rman_get_start(port1) <= 0)
129 atkbdc_attach_unit(int unit, atkbdc_softc_t *sc, struct resource *port0,
130 struct resource *port1)
132 return atkbdc_setup(sc, rman_get_bustag(port0),
133 rman_get_bushandle(port0),
134 rman_get_bushandle(port1));
137 /* the backdoor to the keyboard controller! XXX */
139 atkbdc_configure(void)
142 bus_space_handle_t h0;
143 bus_space_handle_t h1;
146 #if defined(__i386__)
151 resource_int_value("atkbdc", 0, "port", &port0);
152 port1 = IO_KBD + KBD_STATUS_PORT;
154 resource_int_value("atkbdc", 0, "port", &port0);
157 /* XXX: tag should be passed from the caller */
158 #if defined(__i386__)
159 tag = I386_BUS_SPACE_IO;
163 bus_space_map(tag, port0, IO_KBDSIZE, 0, &h0);
164 bus_space_map(tag, port1, IO_KBDSIZE, 0, &h1);
166 h0 = (bus_space_handle_t)port0;
167 h1 = (bus_space_handle_t)port1;
170 #if defined(__i386__)
172 * Check if we really have AT keyboard controller. Poll status
173 * register until we get "all clear" indication. If no such
174 * indication comes, it probably means that there is no AT
175 * keyboard controller present. Give up in such case. Check relies
176 * on the fact that reading from non-existing in/out port returns
177 * 0xff on i386. May or may not be true on other platforms.
179 for (i = 65536; i != 0; --i) {
180 if ((bus_space_read_1(tag, h1, 0) & 0x2) == 0)
188 return atkbdc_setup(atkbdc_softc[0], tag, h0, h1);
192 atkbdc_setup(atkbdc_softc_t *sc, bus_space_tag_t tag, bus_space_handle_t h0,
193 bus_space_handle_t h1)
195 if (sc->ioh0 == 0) { /* XXX */
196 sc->command_byte = -1;
197 sc->command_mask = 0;
199 sc->kbd.head = sc->kbd.tail = 0;
200 sc->aux.head = sc->aux.tail = 0;
202 sc->kbd.call_count = 0;
203 sc->kbd.qcount = sc->kbd.max_qcount = 0;
204 sc->aux.call_count = 0;
205 sc->aux.qcount = sc->aux.max_qcount = 0;
214 /* open a keyboard controller */
216 atkbdc_open(int unit)
222 if ((atkbdc_softc[unit]->port0 != NULL)
223 || (atkbdc_softc[unit]->ioh0 != 0)) /* XXX */
224 return (KBDC)atkbdc_softc[unit];
229 * I/O access arbitration in `kbdio'
231 * The `kbdio' module uses a simplistic convention to arbitrate
232 * I/O access to the controller/keyboard/mouse. The convention requires
233 * close cooperation of the calling device driver.
235 * The device drivers which utilize the `kbdio' module are assumed to
236 * have the following set of routines.
237 * a. An interrupt handler (the bottom half of the driver).
238 * b. Timeout routines which may briefly poll the keyboard controller.
239 * c. Routines outside interrupt context (the top half of the driver).
240 * They should follow the rules below:
241 * 1. The interrupt handler may assume that it always has full access
242 * to the controller/keyboard/mouse.
243 * 2. The other routines must issue `spltty()' if they wish to
244 * prevent the interrupt handler from accessing
245 * the controller/keyboard/mouse.
246 * 3. The timeout routines and the top half routines of the device driver
247 * arbitrate I/O access by observing the lock flag in `kbdio'.
248 * The flag is manipulated via `kbdc_lock()'; when one wants to
249 * perform I/O, call `kbdc_lock(kbdc, TRUE)' and proceed only if
250 * the call returns with TRUE. Otherwise the caller must back off.
251 * Call `kbdc_lock(kbdc, FALSE)' when necessary I/O operaion
252 * is finished. This mechanism does not prevent the interrupt
253 * handler from being invoked at any time and carrying out I/O.
254 * Therefore, `spltty()' must be strategically placed in the device
255 * driver code. Also note that the timeout routine may interrupt
256 * `kbdc_lock()' called by the top half of the driver, but this
257 * interruption is OK so long as the timeout routine observes
259 * 4. The interrupt and timeout routines should not extend I/O operation
260 * across more than one interrupt or timeout; they must complete any
261 * necessary I/O operation within one invocation of the routine.
262 * This means that if the timeout routine acquires the lock flag,
263 * it must reset the flag to FALSE before it returns.
266 /* set/reset polling lock */
268 kbdc_lock(KBDC p, int lock)
272 prevlock = kbdcp(p)->lock;
273 kbdcp(p)->lock = lock;
275 return (prevlock != lock);
278 /* check if any data is waiting to be processed */
280 kbdc_data_ready(KBDC p)
282 return (availq(&kbdcp(p)->kbd) || availq(&kbdcp(p)->aux)
283 || (read_status(kbdcp(p)) & KBDS_ANY_BUFFER_FULL));
286 /* queuing functions */
289 addq(kbdkqueue *q, int c)
291 if (nextq(q->tail) != q->head) {
293 q->tail = nextq(q->tail);
297 if (q->qcount > q->max_qcount)
298 q->max_qcount = q->qcount;
306 removeq(kbdkqueue *q)
310 if (q->tail != q->head) {
312 q->head = nextq(q->head);
322 * device I/O routines
325 wait_while_controller_busy(struct atkbdc_softc *kbdc)
327 /* CPU will stay inside the loop for 100msec at most */
331 while ((f = read_status(kbdc)) & KBDS_INPUT_BUFFER_FULL) {
332 if ((f & KBDS_BUFFER_FULL) == KBDS_KBD_BUFFER_FULL) {
333 DELAY(KBDD_DELAYTIME);
334 addq(&kbdc->kbd, read_data(kbdc));
335 } else if ((f & KBDS_BUFFER_FULL) == KBDS_AUX_BUFFER_FULL) {
336 DELAY(KBDD_DELAYTIME);
337 addq(&kbdc->aux, read_data(kbdc));
339 DELAY(KBDC_DELAYTIME);
347 * wait for any data; whether it's from the controller,
348 * the keyboard, or the aux device.
351 wait_for_data(struct atkbdc_softc *kbdc)
353 /* CPU will stay inside the loop for 200msec at most */
357 while ((f = read_status(kbdc) & KBDS_ANY_BUFFER_FULL) == 0) {
358 DELAY(KBDC_DELAYTIME);
362 DELAY(KBDD_DELAYTIME);
366 /* wait for data from the keyboard */
368 wait_for_kbd_data(struct atkbdc_softc *kbdc)
370 /* CPU will stay inside the loop for 200msec at most */
374 while ((f = read_status(kbdc) & KBDS_BUFFER_FULL)
375 != KBDS_KBD_BUFFER_FULL) {
376 if (f == KBDS_AUX_BUFFER_FULL) {
377 DELAY(KBDD_DELAYTIME);
378 addq(&kbdc->aux, read_data(kbdc));
380 DELAY(KBDC_DELAYTIME);
384 DELAY(KBDD_DELAYTIME);
389 * wait for an ACK(FAh), RESEND(FEh), or RESET_FAIL(FCh) from the keyboard.
390 * queue anything else.
393 wait_for_kbd_ack(struct atkbdc_softc *kbdc)
395 /* CPU will stay inside the loop for 200msec at most */
400 while (retry-- > 0) {
401 if ((f = read_status(kbdc)) & KBDS_ANY_BUFFER_FULL) {
402 DELAY(KBDD_DELAYTIME);
404 if ((f & KBDS_BUFFER_FULL) == KBDS_KBD_BUFFER_FULL) {
405 if ((b == KBD_ACK) || (b == KBD_RESEND)
406 || (b == KBD_RESET_FAIL))
409 } else if ((f & KBDS_BUFFER_FULL) == KBDS_AUX_BUFFER_FULL) {
413 DELAY(KBDC_DELAYTIME);
418 /* wait for data from the aux device */
420 wait_for_aux_data(struct atkbdc_softc *kbdc)
422 /* CPU will stay inside the loop for 200msec at most */
426 while ((f = read_status(kbdc) & KBDS_BUFFER_FULL)
427 != KBDS_AUX_BUFFER_FULL) {
428 if (f == KBDS_KBD_BUFFER_FULL) {
429 DELAY(KBDD_DELAYTIME);
430 addq(&kbdc->kbd, read_data(kbdc));
432 DELAY(KBDC_DELAYTIME);
436 DELAY(KBDD_DELAYTIME);
441 * wait for an ACK(FAh), RESEND(FEh), or RESET_FAIL(FCh) from the aux device.
442 * queue anything else.
445 wait_for_aux_ack(struct atkbdc_softc *kbdc)
447 /* CPU will stay inside the loop for 200msec at most */
452 while (retry-- > 0) {
453 if ((f = read_status(kbdc)) & KBDS_ANY_BUFFER_FULL) {
454 DELAY(KBDD_DELAYTIME);
456 if ((f & KBDS_BUFFER_FULL) == KBDS_AUX_BUFFER_FULL) {
457 if ((b == PSM_ACK) || (b == PSM_RESEND)
458 || (b == PSM_RESET_FAIL))
461 } else if ((f & KBDS_BUFFER_FULL) == KBDS_KBD_BUFFER_FULL) {
465 DELAY(KBDC_DELAYTIME);
470 /* write a one byte command to the controller */
472 write_controller_command(KBDC p, int c)
474 if (!wait_while_controller_busy(kbdcp(p)))
476 write_command(kbdcp(p), c);
480 /* write a one byte data to the controller */
482 write_controller_data(KBDC p, int c)
484 if (!wait_while_controller_busy(kbdcp(p)))
486 write_data(kbdcp(p), c);
490 /* write a one byte keyboard command */
492 write_kbd_command(KBDC p, int c)
494 if (!wait_while_controller_busy(kbdcp(p)))
496 write_data(kbdcp(p), c);
500 /* write a one byte auxiliary device command */
502 write_aux_command(KBDC p, int c)
504 if (!write_controller_command(p, KBDC_WRITE_TO_AUX))
506 return write_controller_data(p, c);
509 /* send a command to the keyboard and wait for ACK */
511 send_kbd_command(KBDC p, int c)
513 int retry = KBD_MAXRETRY;
516 while (retry-- > 0) {
517 if (!write_kbd_command(p, c))
519 res = wait_for_kbd_ack(kbdcp(p));
526 /* send a command to the auxiliary device and wait for ACK */
528 send_aux_command(KBDC p, int c)
530 int retry = KBD_MAXRETRY;
533 while (retry-- > 0) {
534 if (!write_aux_command(p, c))
538 * The aux device may have already sent one or two bytes of
539 * status data, when a command is received. It will immediately
540 * stop data transmission, thus, leaving an incomplete data
541 * packet in our buffer. We have to discard any unprocessed
542 * data in order to remove such packets. Well, we may remove
543 * unprocessed, but necessary data byte as well...
545 emptyq(&kbdcp(p)->aux);
546 res = wait_for_aux_ack(kbdcp(p));
553 /* send a command and a data to the keyboard, wait for ACKs */
555 send_kbd_command_and_data(KBDC p, int c, int d)
560 for (retry = KBD_MAXRETRY; retry > 0; --retry) {
561 if (!write_kbd_command(p, c))
563 res = wait_for_kbd_ack(kbdcp(p));
566 else if (res != KBD_RESEND)
572 for (retry = KBD_MAXRETRY, res = -1; retry > 0; --retry) {
573 if (!write_kbd_command(p, d))
575 res = wait_for_kbd_ack(kbdcp(p));
576 if (res != KBD_RESEND)
582 /* send a command and a data to the auxiliary device, wait for ACKs */
584 send_aux_command_and_data(KBDC p, int c, int d)
589 for (retry = KBD_MAXRETRY; retry > 0; --retry) {
590 if (!write_aux_command(p, c))
592 emptyq(&kbdcp(p)->aux);
593 res = wait_for_aux_ack(kbdcp(p));
596 else if (res != PSM_RESEND)
602 for (retry = KBD_MAXRETRY, res = -1; retry > 0; --retry) {
603 if (!write_aux_command(p, d))
605 res = wait_for_aux_ack(kbdcp(p));
606 if (res != PSM_RESEND)
613 * read one byte from any source; whether from the controller,
614 * the keyboard, or the aux device
617 read_controller_data(KBDC p)
619 if (availq(&kbdcp(p)->kbd))
620 return removeq(&kbdcp(p)->kbd);
621 if (availq(&kbdcp(p)->aux))
622 return removeq(&kbdcp(p)->aux);
623 if (!wait_for_data(kbdcp(p)))
624 return -1; /* timeout */
625 return read_data(kbdcp(p));
632 /* read one byte from the keyboard */
634 read_kbd_data(KBDC p)
639 log(LOG_DEBUG, "kbdc: kbd q: %d calls, max %d chars, "
640 "aux q: %d calls, max %d chars\n",
641 kbdcp(p)->kbd.call_count, kbdcp(p)->kbd.max_qcount,
642 kbdcp(p)->aux.call_count, kbdcp(p)->aux.max_qcount);
646 if (availq(&kbdcp(p)->kbd))
647 return removeq(&kbdcp(p)->kbd);
648 if (!wait_for_kbd_data(kbdcp(p)))
649 return -1; /* timeout */
650 return read_data(kbdcp(p));
653 /* read one byte from the keyboard, but return immediately if
657 read_kbd_data_no_wait(KBDC p)
664 log(LOG_DEBUG, "kbdc: kbd q: %d calls, max %d chars, "
665 "aux q: %d calls, max %d chars\n",
666 kbdcp(p)->kbd.call_count, kbdcp(p)->kbd.max_qcount,
667 kbdcp(p)->aux.call_count, kbdcp(p)->aux.max_qcount);
671 if (availq(&kbdcp(p)->kbd))
672 return removeq(&kbdcp(p)->kbd);
673 f = read_status(kbdcp(p)) & KBDS_BUFFER_FULL;
674 if (f == KBDS_AUX_BUFFER_FULL) {
675 DELAY(KBDD_DELAYTIME);
676 addq(&kbdcp(p)->aux, read_data(kbdcp(p)));
677 f = read_status(kbdcp(p)) & KBDS_BUFFER_FULL;
679 if (f == KBDS_KBD_BUFFER_FULL) {
680 DELAY(KBDD_DELAYTIME);
681 return read_data(kbdcp(p));
683 return -1; /* no data */
686 /* read one byte from the aux device */
688 read_aux_data(KBDC p)
690 if (availq(&kbdcp(p)->aux))
691 return removeq(&kbdcp(p)->aux);
692 if (!wait_for_aux_data(kbdcp(p)))
693 return -1; /* timeout */
694 return read_data(kbdcp(p));
697 /* read one byte from the aux device, but return immediately if
701 read_aux_data_no_wait(KBDC p)
705 if (availq(&kbdcp(p)->aux))
706 return removeq(&kbdcp(p)->aux);
707 f = read_status(kbdcp(p)) & KBDS_BUFFER_FULL;
708 if (f == KBDS_KBD_BUFFER_FULL) {
709 DELAY(KBDD_DELAYTIME);
710 addq(&kbdcp(p)->kbd, read_data(kbdcp(p)));
711 f = read_status(kbdcp(p)) & KBDS_BUFFER_FULL;
713 if (f == KBDS_AUX_BUFFER_FULL) {
714 DELAY(KBDD_DELAYTIME);
715 return read_data(kbdcp(p));
717 return -1; /* no data */
720 /* discard data from the keyboard */
722 empty_kbd_buffer(KBDC p, int wait)
733 for (t = wait; t > 0; ) {
734 if ((f = read_status(kbdcp(p))) & KBDS_ANY_BUFFER_FULL) {
735 DELAY(KBDD_DELAYTIME);
736 b = read_data(kbdcp(p));
737 if ((f & KBDS_BUFFER_FULL) == KBDS_AUX_BUFFER_FULL) {
738 addq(&kbdcp(p)->aux, b);
752 if ((c1 > 0) || (c2 > 0))
753 log(LOG_DEBUG, "kbdc: %d:%d char read (empty_kbd_buffer)\n", c1, c2);
756 emptyq(&kbdcp(p)->kbd);
759 /* discard data from the aux device */
761 empty_aux_buffer(KBDC p, int wait)
772 for (t = wait; t > 0; ) {
773 if ((f = read_status(kbdcp(p))) & KBDS_ANY_BUFFER_FULL) {
774 DELAY(KBDD_DELAYTIME);
775 b = read_data(kbdcp(p));
776 if ((f & KBDS_BUFFER_FULL) == KBDS_KBD_BUFFER_FULL) {
777 addq(&kbdcp(p)->kbd, b);
791 if ((c1 > 0) || (c2 > 0))
792 log(LOG_DEBUG, "kbdc: %d:%d char read (empty_aux_buffer)\n", c1, c2);
795 emptyq(&kbdcp(p)->aux);
798 /* discard any data from the keyboard or the aux device */
800 empty_both_buffers(KBDC p, int wait)
810 for (t = wait; t > 0; ) {
811 if ((f = read_status(kbdcp(p))) & KBDS_ANY_BUFFER_FULL) {
812 DELAY(KBDD_DELAYTIME);
813 (void)read_data(kbdcp(p));
815 if ((f & KBDS_BUFFER_FULL) == KBDS_KBD_BUFFER_FULL)
827 if ((c1 > 0) || (c2 > 0))
828 log(LOG_DEBUG, "kbdc: %d:%d char read (empty_both_buffers)\n", c1, c2);
831 emptyq(&kbdcp(p)->kbd);
832 emptyq(&kbdcp(p)->aux);
835 /* keyboard and mouse device control */
837 /* NOTE: enable the keyboard port but disable the keyboard
838 * interrupt before calling "reset_kbd()".
843 int retry = KBD_MAXRETRY;
844 int again = KBD_MAXWAIT;
845 int c = KBD_RESEND; /* keep the compiler happy */
847 while (retry-- > 0) {
848 empty_both_buffers(p, 10);
849 if (!write_kbd_command(p, KBDC_RESET_KBD))
851 emptyq(&kbdcp(p)->kbd);
852 c = read_controller_data(p);
853 if (verbose || bootverbose)
854 log(LOG_DEBUG, "kbdc: RESET_KBD return code:%04x\n", c);
855 if (c == KBD_ACK) /* keyboard has agreed to reset itself... */
861 while (again-- > 0) {
862 /* wait awhile, well, in fact we must wait quite loooooooooooong */
863 DELAY(KBD_RESETDELAY*1000);
864 c = read_controller_data(p); /* RESET_DONE/RESET_FAIL */
865 if (c != -1) /* wait again if the controller is not ready */
868 if (verbose || bootverbose)
869 log(LOG_DEBUG, "kbdc: RESET_KBD status:%04x\n", c);
870 if (c != KBD_RESET_DONE)
875 /* NOTE: enable the aux port but disable the aux interrupt
876 * before calling `reset_aux_dev()'.
879 reset_aux_dev(KBDC p)
881 int retry = KBD_MAXRETRY;
882 int again = KBD_MAXWAIT;
883 int c = PSM_RESEND; /* keep the compiler happy */
885 while (retry-- > 0) {
886 empty_both_buffers(p, 10);
887 if (!write_aux_command(p, PSMC_RESET_DEV))
889 emptyq(&kbdcp(p)->aux);
890 /* NOTE: Compaq Armada laptops require extra delay here. XXX */
891 for (again = KBD_MAXWAIT; again > 0; --again) {
892 DELAY(KBD_RESETDELAY*1000);
893 c = read_aux_data_no_wait(p);
897 if (verbose || bootverbose)
898 log(LOG_DEBUG, "kbdc: RESET_AUX return code:%04x\n", c);
899 if (c == PSM_ACK) /* aux dev is about to reset... */
905 for (again = KBD_MAXWAIT; again > 0; --again) {
906 /* wait awhile, well, quite looooooooooooong */
907 DELAY(KBD_RESETDELAY*1000);
908 c = read_aux_data_no_wait(p); /* RESET_DONE/RESET_FAIL */
909 if (c != -1) /* wait again if the controller is not ready */
912 if (verbose || bootverbose)
913 log(LOG_DEBUG, "kbdc: RESET_AUX status:%04x\n", c);
914 if (c != PSM_RESET_DONE) /* reset status */
917 c = read_aux_data(p); /* device ID */
918 if (verbose || bootverbose)
919 log(LOG_DEBUG, "kbdc: RESET_AUX ID:%04x\n", c);
920 /* NOTE: we could check the device ID now, but leave it later... */
924 /* controller diagnostics and setup */
927 test_controller(KBDC p)
929 int retry = KBD_MAXRETRY;
930 int again = KBD_MAXWAIT;
931 int c = KBD_DIAG_FAIL;
933 while (retry-- > 0) {
934 empty_both_buffers(p, 10);
935 if (write_controller_command(p, KBDC_DIAGNOSE))
941 emptyq(&kbdcp(p)->kbd);
942 while (again-- > 0) {
944 DELAY(KBD_RESETDELAY*1000);
945 c = read_controller_data(p); /* DIAG_DONE/DIAG_FAIL */
946 if (c != -1) /* wait again if the controller is not ready */
949 if (verbose || bootverbose)
950 log(LOG_DEBUG, "kbdc: DIAGNOSE status:%04x\n", c);
951 return (c == KBD_DIAG_DONE);
955 test_kbd_port(KBDC p)
957 int retry = KBD_MAXRETRY;
958 int again = KBD_MAXWAIT;
961 while (retry-- > 0) {
962 empty_both_buffers(p, 10);
963 if (write_controller_command(p, KBDC_TEST_KBD_PORT))
969 emptyq(&kbdcp(p)->kbd);
970 while (again-- > 0) {
971 c = read_controller_data(p);
972 if (c != -1) /* try again if the controller is not ready */
975 if (verbose || bootverbose)
976 log(LOG_DEBUG, "kbdc: TEST_KBD_PORT status:%04x\n", c);
981 test_aux_port(KBDC p)
983 int retry = KBD_MAXRETRY;
984 int again = KBD_MAXWAIT;
987 while (retry-- > 0) {
988 empty_both_buffers(p, 10);
989 if (write_controller_command(p, KBDC_TEST_AUX_PORT))
995 emptyq(&kbdcp(p)->kbd);
996 while (again-- > 0) {
997 c = read_controller_data(p);
998 if (c != -1) /* try again if the controller is not ready */
1001 if (verbose || bootverbose)
1002 log(LOG_DEBUG, "kbdc: TEST_AUX_PORT status:%04x\n", c);
1007 kbdc_get_device_mask(KBDC p)
1009 return kbdcp(p)->command_mask;
1013 kbdc_set_device_mask(KBDC p, int mask)
1015 kbdcp(p)->command_mask =
1016 mask & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS);
1020 get_controller_command_byte(KBDC p)
1022 if (kbdcp(p)->command_byte != -1)
1023 return kbdcp(p)->command_byte;
1024 if (!write_controller_command(p, KBDC_GET_COMMAND_BYTE))
1026 emptyq(&kbdcp(p)->kbd);
1027 kbdcp(p)->command_byte = read_controller_data(p);
1028 return kbdcp(p)->command_byte;
1032 set_controller_command_byte(KBDC p, int mask, int command)
1034 if (get_controller_command_byte(p) == -1)
1037 command = (kbdcp(p)->command_byte & ~mask) | (command & mask);
1038 if (command & KBD_DISABLE_KBD_PORT) {
1039 if (!write_controller_command(p, KBDC_DISABLE_KBD_PORT))
1042 if (!write_controller_command(p, KBDC_SET_COMMAND_BYTE))
1044 if (!write_controller_data(p, command))
1046 kbdcp(p)->command_byte = command;
1049 log(LOG_DEBUG, "kbdc: new command byte:%04x (set_controller...)\n",