1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #include <sys/types.h>
27 #include <sys/ddi.h>
28 #include <sys/inline.h>
29 #include <sys/conf.h>
30 #include <sys/sunddi.h>
31 #include <sys/sunndi.h>
32 #include <sys/i8042.h>
33 #include <sys/kmem.h>
34 #include <sys/promif.h> /* for prom_printf */
35 #include <sys/note.h>
36
37 /*
38 * Note: For x86, this driver is used to create keyboard/mouse nodes when
39 * booting with ACPI enumeration turned off (acpi-enum=off).
40 */
41
42 /*
43 * Unfortunately, soft interrupts are implemented poorly. Each additional
44 * soft interrupt user impacts the performance of all existing soft interrupt
45 * users. This is not the case on SPARC, however.
46 */
47 #ifdef __sparc
48 #define USE_SOFT_INTRS
49 #else
50 #undef USE_SOFT_INTRS
51 #endif
52
53 /*
54 * The command bytes are different for x86 and for SPARC because on x86,
55 * all modern 8042s can properly translate scan code set 2 codes to
56 * scan code set 1. On SPARC systems that have 8042s (e.g. Tadpole laptops),
57 * setting the "translation" bit in the command byte has no effect.
58 * This is potentially dangerous if, in the future, new SPARC systems uses 8042s
59 * that implement the scan code translation when the translation bit is set.
60 *
61 * On SPARC, kb8042 will attempt to detect which scan code set the keyboard
62 * is using. In order for that code to work, the real scan code set must be the
63 * set that is returned by the keyboard (and not a different set that is
64 * translated by the 8042). (e.g. If the translation bit were enabled here,
65 * and the keyboard returned scan code set 2 when kb8042 queried it, kb8042
66 * would not be able to know with certainty that the scan codes it will receive
67 * are set 2 scancodes, or set 1 translations made by the 8042).
68 */
69
70 /*
71 * 8042 Command Byte Layout:
72 *
73 * 0x80: 0 = Reserved, must be zero.
74 * 0x40: 1 = Translate to XT codes. (0=No translation)
75 * 0x20: 1 = Disable aux (mouse) port. (0=Enable port)
76 * 0x10: 1 = Disable main (keyboard) port. (0=Enable port)
77 * 0x08: 0 = Reserved, must be zero.
78 * 0x04: 1 = System flag, 1 means passed self-test.
79 * Caution: setting this bit to zero causes some
80 * systems (HP Kayak XA) to fail to reboot without
81 * a hard reset.
82 * 0x02: 0 = Disable aux port interrupts. (1=Enable aux port interrupts)
83 * 0x01: 0 = Disable main port interrupts. (1=Enable main port interrupts)
84 *
85 */
86 #if defined(__sparc)
87 #define I8042_CMD_DISABLE_ALL 0x34
88 #define I8042_CMD_ENABLE_ALL 0x07
89 #elif defined(__i386) || defined(__amd64)
90 #define I8042_CMD_DISABLE_ALL 0x74
91 #define I8042_CMD_ENABLE_ALL 0x47
92 #endif
93
94 #define BUFSIZ 64
95
96 /*
97 * Child nodes, used to determine which to create at bus_config time
98 */
99 #define I8042_KEYBOARD 2
100 #define I8042_MOUSE 1
101
102 enum i8042_ports {
103 MAIN_PORT = 0,
104 AUX_PORT
105 };
106
107 #define NUM_PORTS 2
108
109 /*
110 * Only register at most MAX_INTERRUPTS interrupt handlers,
111 * regardless of the number of interrupts in the prom node.
112 * This is important, as registering for all interrupts on
113 * some systems (e.g. Tadpole laptops) results in a flood
114 * of spurious interrupts (for Tadpole, the first 2 interrupts
115 * are for the keyboard and mouse, respectively, and the
116 * third is for a proprietary device that is also accessed
117 * via the same I/O addresses.)
118 */
119 #define MAX_INTERRUPTS 2
120
121 /*
122 * One of these for each port - main (keyboard) and aux (mouse).
123 */
124 struct i8042_port {
125 boolean_t initialized;
126 dev_info_t *dip;
127 int inumber;
128 enum i8042_ports which; /* main or aux port */
129 #if defined(USE_SOFT_INTRS)
130 ddi_softint_handle_t soft_hdl;
131 boolean_t soft_intr_enabled;
132 #else
133 kmutex_t intr_mutex;
134 #endif
135 uint_t (*intr_func)(caddr_t arg1, caddr_t arg2);
136 caddr_t intr_arg1;
137 caddr_t intr_arg2;
138 struct i8042 *i8042_global;
139 /*
140 * wptr is next byte to write
141 */
142 int wptr;
143 /*
144 * rptr is next byte to read, == wptr means empty
145 * NB: At full, one byte is unused.
146 */
147 int rptr;
148 int overruns;
149 unsigned char buf[BUFSIZ];
150 /*
151 * has_glock is 1 if this child has the [put8] exclusive-access lock.
152 */
153 volatile boolean_t has_glock;
154 };
155
156 /*
157 * Describes entire 8042 device.
158 */
159 struct i8042 {
160 dev_info_t *dip;
161 struct i8042_port i8042_ports[NUM_PORTS];
162 kmutex_t i8042_mutex;
163 kmutex_t i8042_out_mutex;
164 boolean_t initialized;
165 ddi_acc_handle_t io_handle;
166 uint8_t *io_addr;
167 int nintrs;
168 ddi_iblock_cookie_t *iblock_cookies;
169 uint_t init_state;
170 /* Initialization states: */
171 #define I8042_INIT_BASIC 0x00000001
172 #define I8042_INIT_REGS_MAPPED 0x00000002
173 #define I8042_INIT_MUTEXES 0x00000004
174 #define I8042_INIT_INTRS_ENABLED 0x00000010
175 uint_t intrs_added;
176 #ifdef __sparc
177 timeout_id_t timeout_id;
178 #endif
179 /*
180 * glock is 1 if any child has the [put8] exclusive-access lock
181 * glock_cv is associated with the condition `glock == 0'
182 */
183 volatile int glock;
184 /*
185 * Callers awaiting exclusive access in i8042_put8 sleep on glock_cv
186 * and are signaled when another child relinquishes exclusive access.
187 */
188 kcondvar_t glock_cv;
189 };
190
191 /*
192 * i8042 hardware register definitions
193 */
194
195 /*
196 * These are I/O registers, relative to the device's base (normally 0x60).
197 */
198 #define I8042_DATA 0x00 /* read/write data here */
199 #define I8042_STAT 0x04 /* read status here */
200 #define I8042_CMD 0x04 /* write commands here */
201
202 /*
203 * These are bits in I8042_STAT.
204 */
205 #define I8042_STAT_OUTBF 0x01 /* Output (to host) buffer full */
206 #define I8042_STAT_INBF 0x02 /* Input (from host) buffer full */
207 #define I8042_STAT_AUXBF 0x20 /* Output buffer data is from aux */
208
209 /*
210 * These are commands to the i8042 itself (as distinct from the devices
211 * attached to it).
212 */
213 #define I8042_CMD_RCB 0x20 /* Read command byte (we don't use) */
214 #define I8042_CMD_WCB 0x60 /* Write command byte */
215 #define I8042_CMD_WRITE_AUX 0xD4 /* Send next data byte to aux port */
216
217 /*
218 * Maximum number of times to loop while clearing pending data from the
219 * keyboard controller.
220 */
221 #define MAX_JUNK_ITERATIONS 1000
222
223 /*
224 * Maximum time to wait for the keyboard to become ready to accept data
225 * (maximum time = MAX_WAIT_ITERATIONS * USECS_PER_WAIT (default is 250ms))
226 */
227 #define MAX_WAIT_ITERATIONS 25000
228 #define USECS_PER_WAIT 10
229
230
231 #ifdef __sparc
232
233 #define PLATFORM_MATCH(s) (strncmp(ddi_get_name(ddi_root_node()), \
234 (s), strlen(s)) == 0)
235
236 /*
237 * On some older SPARC platforms that have problems with the
238 * interrupt line attached to the PS/2 keyboard/mouse, it
239 * may be necessary to change the operating mode of the nexus
240 * to a polling-based (instead of interrupt-based) method.
241 * this variable is present to enable a worst-case workaround so
242 * owners of these systems can still retain a working keyboard.
243 *
244 * The `i8042_polled_mode' variable can be used to force polled
245 * mode for platforms that have this issue, but for which
246 * automatic relief is not implemented.
247 *
248 * In the off chance that one of the platforms is misidentified
249 * as requiried polling mode, `i8042_force_interrupt_mode' can
250 * be set to force the nexus to use interrupts.
251 */
252 #define I8042_MIN_POLL_INTERVAL 1000 /* usecs */
253 int i8042_poll_interval = 8000; /* usecs */
254 int i8042_fast_poll_interval; /* usecs */
255 int i8042_slow_poll_interval; /* usecs */
256
257 boolean_t i8042_polled_mode = B_FALSE;
258 boolean_t i8042_force_interrupt_mode = B_FALSE;
259 #endif /* __sparc */
260
261 int max_wait_iterations = MAX_WAIT_ITERATIONS;
262
263 #ifdef DEBUG
264 int i8042_debug = 0;
265 #endif
266
267 /*
268 * function prototypes for bus ops routines:
269 */
270 static int i8042_map(dev_info_t *dip, dev_info_t *rdip, ddi_map_req_t *mp,
271 off_t offset, off_t len, caddr_t *addrp);
272 static int i8042_ctlops(dev_info_t *dip, dev_info_t *rdip,
273 ddi_ctl_enum_t op, void *arg, void *result);
274
275 /*
276 * function prototypes for dev ops routines:
277 */
278 static int i8042_attach(dev_info_t *dip, ddi_attach_cmd_t cmd);
279 static int i8042_detach(dev_info_t *dip, ddi_detach_cmd_t cmd);
280 static int i8042_intr_ops(dev_info_t *dip, dev_info_t *rdip,
281 ddi_intr_op_t intr_op, ddi_intr_handle_impl_t *hdlp, void *result);
282 static int i8042_bus_config(dev_info_t *, uint_t, ddi_bus_config_op_t,
283 void *, dev_info_t **);
284 static int i8042_bus_unconfig(dev_info_t *, uint_t,
285 ddi_bus_config_op_t, void *);
286 #ifdef __sparc
287 static int i8042_build_interrupts_property(dev_info_t *dip);
288 static boolean_t i8042_is_polling_platform(void);
289 #endif
290
291 /*
292 * bus ops and dev ops structures:
293 */
294 static struct bus_ops i8042_bus_ops = {
295 BUSO_REV,
296 i8042_map,
297 NULL,
298 NULL,
299 NULL,
300 NULL, /* ddi_map_fault */
301 NULL, /* ddi_dma_map */
302 NULL, /* ddi_dma_allochdl */
303 NULL, /* ddi_dma_freehdl */
304 NULL, /* ddi_dma_bindhdl */
305 NULL, /* ddi_dma_unbindhdl */
306 NULL, /* ddi_dma_flush */
307 NULL, /* ddi_dma_win */
308 NULL, /* ddi_dma_mctl */
309 i8042_ctlops,
310 ddi_bus_prop_op,
311 NULL, /* (*bus_get_eventcookie)(); */
312 NULL, /* (*bus_add_eventcall)(); */
313 NULL, /* (*bus_remove_eventcall)(); */
314 NULL, /* (*bus_post_event)(); */
315 NULL, /* bus_intr_ctl */
316 i8042_bus_config, /* bus_config */
317 i8042_bus_unconfig, /* bus_unconfig */
318 NULL, /* bus_fm_init */
319 NULL, /* bus_fm_fini */
320 NULL, /* bus_fm_access_enter */
321 NULL, /* bus_fm_access_exit */
322 NULL, /* bus_power */
323 i8042_intr_ops /* bus_intr_op */
324 };
325
326 static struct dev_ops i8042_ops = {
327 DEVO_REV,
328 0,
329 ddi_no_info,
330 nulldev,
331 0,
332 i8042_attach,
333 i8042_detach,
334 nodev,
335 (struct cb_ops *)0,
336 &i8042_bus_ops,
337 NULL,
338 ddi_quiesce_not_needed,
339 };
340
341
342 /*
343 * module definitions:
344 */
345 #include <sys/modctl.h>
346 extern struct mod_ops mod_driverops;
347
348 static struct modldrv modldrv = {
349 &mod_driverops, /* Type of module. This one is a driver */
350 "i8042 nexus driver", /* Name of module. */
351 &i8042_ops, /* driver ops */
352 };
353
354 static struct modlinkage modlinkage = {
355 MODREV_1, (void *)&modldrv, NULL
356 };
357
358 int
_init(void)359 _init(void)
360 {
361 int e;
362
363 /*
364 * Install the module.
365 */
366 e = mod_install(&modlinkage);
367 return (e);
368 }
369
370 int
_fini(void)371 _fini(void)
372 {
373 int e;
374
375 /*
376 * Remove the module.
377 */
378 e = mod_remove(&modlinkage);
379 if (e != 0)
380 return (e);
381
382 return (e);
383 }
384
385 int
_info(struct modinfo * modinfop)386 _info(struct modinfo *modinfop)
387 {
388 return (mod_info(&modlinkage, modinfop));
389 }
390
391 #define DRIVER_NAME(dip) ddi_driver_name(dip)
392
393 static void i8042_timeout(void *arg);
394 static unsigned int i8042_intr(caddr_t arg);
395 static void i8042_write_command_byte(struct i8042 *, unsigned char);
396 static uint8_t i8042_get8(ddi_acc_impl_t *handlep, uint8_t *addr);
397 static void i8042_put8(ddi_acc_impl_t *handlep, uint8_t *addr,
398 uint8_t value);
399 static void i8042_send(struct i8042 *global, int reg, unsigned char cmd);
400 static uint8_t i8042_get8(ddi_acc_impl_t *handlep, uint8_t *addr);
401
402 unsigned int i8042_unclaimed_interrupts = 0;
403
404 static void
i8042_discard_junk_data(struct i8042 * global)405 i8042_discard_junk_data(struct i8042 *global)
406 {
407 /* Discard any junk data that may have been left around */
408 for (;;) {
409 unsigned char stat;
410
411 stat = ddi_get8(global->io_handle,
412 global->io_addr + I8042_STAT);
413 if (! (stat & I8042_STAT_OUTBF))
414 break;
415 (void) ddi_get8(global->io_handle,
416 global->io_addr + I8042_DATA);
417
418 }
419 }
420
421 static int
i8042_cleanup(struct i8042 * global)422 i8042_cleanup(struct i8042 *global)
423 {
424 int which_port, i;
425 struct i8042_port *port;
426
427 ASSERT(global != NULL);
428
429 if (global->initialized == B_TRUE) {
430 /*
431 * If any children still have regs mapped or interrupts
432 * registered, return immediate failure (and do nothing).
433 */
434 mutex_enter(&global->i8042_mutex);
435
436 for (which_port = 0; which_port < NUM_PORTS; which_port++) {
437 port = &global->i8042_ports[which_port];
438
439 if (port->initialized == B_TRUE) {
440 mutex_exit(&global->i8042_mutex);
441 return (DDI_FAILURE);
442 }
443 #if defined(USE_SOFT_INTRS)
444 if (port->soft_hdl != 0) {
445 mutex_exit(&global->i8042_mutex);
446 return (DDI_FAILURE);
447 }
448 #else
449 mutex_enter(&port->intr_mutex);
450 if (port->intr_func != NULL) {
451 mutex_exit(&port->intr_mutex);
452 mutex_exit(&global->i8042_mutex);
453 return (DDI_FAILURE);
454 }
455 mutex_exit(&port->intr_mutex);
456 #endif
457 }
458 global->initialized = B_FALSE;
459
460 mutex_exit(&global->i8042_mutex);
461 }
462
463 #ifdef __sparc
464 /* If there may be an outstanding timeout, cancel it */
465 if (global->timeout_id != 0) {
466 (void) untimeout(global->timeout_id);
467 }
468 #endif
469
470 /* Stop the controller from generating interrupts */
471 if (global->init_state & I8042_INIT_INTRS_ENABLED)
472 i8042_write_command_byte(global, I8042_CMD_DISABLE_ALL);
473
474 if (global->intrs_added) {
475 /*
476 * Remove the interrupts in the reverse order in
477 * which they were added
478 */
479 for (i = global->nintrs - 1; i >= 0; i--) {
480 if (global->intrs_added & (1 << i))
481 ddi_remove_intr(global->dip, i,
482 global->iblock_cookies[i]);
483 }
484 }
485
486
487 if (global->init_state & I8042_INIT_MUTEXES) {
488 for (which_port = 0; which_port < NUM_PORTS; which_port++) {
489 #ifndef USE_SOFT_INTRS
490 port = &global->i8042_ports[which_port];
491 mutex_destroy(&port->intr_mutex);
492 #endif
493 }
494 cv_destroy(&global->glock_cv);
495 mutex_destroy(&global->i8042_out_mutex);
496 mutex_destroy(&global->i8042_mutex);
497 }
498
499 if (global->init_state & I8042_INIT_REGS_MAPPED)
500 ddi_regs_map_free(&global->io_handle);
501
502 if (global->init_state & I8042_INIT_BASIC) {
503 ddi_set_driver_private(global->dip, (caddr_t)NULL);
504 if (global->nintrs > 0) {
505 kmem_free(global->iblock_cookies, global->nintrs *
506 sizeof (ddi_iblock_cookie_t));
507 }
508 kmem_free(global, sizeof (struct i8042));
509 }
510
511 return (DDI_SUCCESS);
512 }
513
514 #define OBF_WAIT_COUNT 1000 /* in granules of 10uS */
515
516 /*
517 * Wait for the 8042 to fill the 'output' (from 8042 to host)
518 * buffer. If 8042 fails to fill the output buffer within an
519 * allowed time, return 1 (which means there is no data available),
520 * otherwise return 0
521 */
522 static int
i8042_wait_obf(struct i8042 * global)523 i8042_wait_obf(struct i8042 *global)
524 {
525 int timer = 0;
526
527 while (!(ddi_get8(global->io_handle, global->io_addr + I8042_STAT) &
528 I8042_STAT_OUTBF)) {
529 if (++timer > OBF_WAIT_COUNT)
530 return (1);
531 drv_usecwait(10);
532 }
533 return (0);
534 }
535
536
537 /*
538 * Drain all queued bytes from the 8042.
539 * Return 0 for no error, <> 0 if there was an error.
540 */
541 static int
i8042_purge_outbuf(struct i8042 * global)542 i8042_purge_outbuf(struct i8042 *global)
543 {
544 int i;
545
546 for (i = 0; i < MAX_JUNK_ITERATIONS; i++) {
547 if (i8042_wait_obf(global))
548 break;
549 (void) ddi_get8(global->io_handle,
550 global->io_addr + I8042_DATA);
551 }
552
553 /*
554 * If we hit the maximum number of iterations, then there
555 * was a serious problem (e.g. our hardware may not be
556 * present or working properly).
557 */
558 return (i == MAX_JUNK_ITERATIONS);
559 }
560
561 static int
i8042_attach(dev_info_t * dip,ddi_attach_cmd_t cmd)562 i8042_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
563 {
564 struct i8042_port *port;
565 enum i8042_ports which_port;
566 int i;
567 #if !defined(USE_SOFT_INTRS)
568 ddi_iblock_cookie_t cookie;
569 #endif
570 static ddi_device_acc_attr_t attr = {
571 DDI_DEVICE_ATTR_V0,
572 DDI_NEVERSWAP_ACC,
573 DDI_STRICTORDER_ACC,
574 };
575 struct i8042 *global;
576 #ifdef __sparc
577 int interval;
578 #endif
579
580 switch (cmd) {
581 case DDI_RESUME:
582 global = (struct i8042 *)ddi_get_driver_private(dip);
583 i8042_discard_junk_data(global);
584 i8042_write_command_byte(global, I8042_CMD_ENABLE_ALL);
585 return (DDI_SUCCESS);
586
587 case DDI_ATTACH:
588 /* Handled in the main function block */
589 break;
590
591 default:
592 return (DDI_FAILURE);
593 }
594
595 /*
596 * DDI_ATTACH processing
597 */
598
599 global = (struct i8042 *)kmem_zalloc(sizeof (struct i8042), KM_SLEEP);
600 ddi_set_driver_private(dip, (caddr_t)global);
601 global->dip = dip;
602 global->initialized = B_FALSE;
603
604 global->init_state |= I8042_INIT_BASIC;
605
606 if (ddi_regs_map_setup(dip, 0, (caddr_t *)&global->io_addr,
607 (offset_t)0, (offset_t)0, &attr, &global->io_handle)
608 != DDI_SUCCESS)
609 goto fail;
610
611 global->init_state |= I8042_INIT_REGS_MAPPED;
612
613 /*
614 * Get the number of interrupts for this nexus
615 */
616 if (ddi_dev_nintrs(dip, &global->nintrs) == DDI_FAILURE)
617 goto fail;
618
619 #ifdef __sparc
620 if ((i8042_polled_mode || i8042_is_polling_platform()) &&
621 !i8042_force_interrupt_mode) {
622 /*
623 * If we're on a platform that has known
624 * interrupt issues with the keyboard/mouse,
625 * use polled mode.
626 */
627 i8042_polled_mode = B_TRUE;
628 global->nintrs = 0;
629 } else if (global->nintrs == 0) {
630 /*
631 * If there are no interrupts on the i8042 node,
632 * we may be on a brain-dead platform that only
633 * has interrupts properties on i8042's children
634 * (e.g. some UltraII-based boards)
635 * In this case, scan first-level children, and
636 * build a list of interrupts that each child uses,
637 * then create an `interrupts' property on the nexus node
638 * that contains the interrupts used by all children
639 */
640 if (i8042_build_interrupts_property(dip) == DDI_FAILURE ||
641 ddi_dev_nintrs(dip, &global->nintrs) == DDI_FAILURE ||
642 global->nintrs == 0) {
643 cmn_err(CE_WARN, "i8042#%d: No interrupts defined!",
644 ddi_get_instance(global->dip));
645 goto fail;
646 }
647 }
648 #else
649 if (global->nintrs == 0) {
650 cmn_err(CE_WARN, "i8042#%d: No interrupts defined!",
651 ddi_get_instance(global->dip));
652 goto fail;
653 }
654 #endif
655
656 if (global->nintrs > MAX_INTERRUPTS)
657 global->nintrs = MAX_INTERRUPTS;
658
659 if (global->nintrs > 0) {
660 global->iblock_cookies = kmem_zalloc(global->nintrs *
661 sizeof (ddi_iblock_cookie_t), KM_NOSLEEP);
662
663 for (i = 0; i < global->nintrs; i++) {
664 if (ddi_get_iblock_cookie(dip, i,
665 &global->iblock_cookies[i]) != DDI_SUCCESS)
666 goto fail;
667 }
668 } else
669 global->iblock_cookies = NULL;
670
671 mutex_init(&global->i8042_mutex, NULL, MUTEX_DRIVER,
672 (global->nintrs > 0) ? global->iblock_cookies[0] : NULL);
673
674 mutex_init(&global->i8042_out_mutex, NULL, MUTEX_DRIVER, NULL);
675
676 cv_init(&global->glock_cv, NULL, CV_DRIVER, NULL);
677
678 for (which_port = 0; which_port < NUM_PORTS; ++which_port) {
679 port = &global->i8042_ports[which_port];
680 port->initialized = B_FALSE;
681 port->i8042_global = global;
682 port->which = which_port;
683 #if defined(USE_SOFT_INTRS)
684 port->soft_hdl = 0;
685 #else
686
687 /*
688 * Assume that the interrupt block cookie for port <n>
689 * is iblock_cookies[<n>] (a 1:1 mapping). If there are not
690 * enough interrupts to cover the number of ports, use
691 * the cookie from interrupt 0.
692 */
693 if (global->nintrs > 0) {
694 cookie = global->iblock_cookies[
695 (which_port < global->nintrs) ? which_port : 0];
696
697 mutex_init(&port->intr_mutex, NULL, MUTEX_DRIVER,
698 cookie);
699
700 } else {
701 mutex_init(&port->intr_mutex, NULL, MUTEX_DRIVER, NULL);
702 }
703
704 #endif
705 }
706
707 global->init_state |= I8042_INIT_MUTEXES;
708
709 /*
710 * Disable input and interrupts from both the main and aux ports.
711 *
712 * It is difficult if not impossible to read the command byte in
713 * a completely clean way. Reading the command byte may cause
714 * an interrupt, and there is no way to suppress interrupts without
715 * writing the command byte. On a PC we might rely on the fact
716 * that IRQ 1 is disabled and guaranteed not shared, but on
717 * other platforms the interrupt line might be shared and so
718 * causing an interrupt could be bad.
719 *
720 * Since we can't read the command byte and update it, we
721 * just set it to static values.
722 */
723 i8042_write_command_byte(global, I8042_CMD_DISABLE_ALL);
724
725 global->init_state &= ~I8042_INIT_INTRS_ENABLED;
726
727 /* Discard any junk data that may have been left around */
728 if (i8042_purge_outbuf(global) != 0)
729 goto fail;
730
731
732 /*
733 * Assume the number of interrupts is less that the number of
734 * bits in the variable used to keep track of which interrupt
735 * was added.
736 */
737 ASSERT(global->nintrs <= (sizeof (global->intrs_added) * NBBY));
738
739 for (i = 0; i < global->nintrs; i++) {
740 /*
741 * The 8042 handles all interrupts, because all
742 * device access goes through the same I/O addresses.
743 */
744 if (ddi_add_intr(dip, i,
745 (ddi_iblock_cookie_t *)NULL,
746 (ddi_idevice_cookie_t *)NULL,
747 i8042_intr, (caddr_t)global) != DDI_SUCCESS)
748 goto fail;
749
750 global->intrs_added |= (1 << i);
751 }
752
753 global->initialized = B_TRUE;
754
755 /*
756 * Enable the main and aux data ports and interrupts
757 */
758 i8042_write_command_byte(global, I8042_CMD_ENABLE_ALL);
759 global->init_state |= I8042_INIT_INTRS_ENABLED;
760
761 #ifdef __sparc
762 if (i8042_polled_mode) {
763 /*
764 * Do not allow anyone to set the polling interval
765 * to an interval more frequent than I8042_MIN_POLL_INTERVAL --
766 * it could hose the system.
767 */
768 interval = i8042_poll_interval;
769 if (interval < I8042_MIN_POLL_INTERVAL)
770 interval = I8042_MIN_POLL_INTERVAL;
771 i8042_fast_poll_interval = interval;
772 i8042_slow_poll_interval = interval << 3;
773
774 global->timeout_id = timeout(i8042_timeout, global,
775 drv_usectohz(i8042_slow_poll_interval));
776 }
777 #endif
778
779 return (DDI_SUCCESS);
780
781 fail:
782 /* cleanup will succeed because no children have attached yet */
783 (void) i8042_cleanup(global);
784 return (DDI_FAILURE);
785 }
786
787 /*ARGSUSED*/
788 static int
i8042_detach(dev_info_t * dip,ddi_detach_cmd_t cmd)789 i8042_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
790 {
791 struct i8042 *global = (struct i8042 *)ddi_get_driver_private(dip);
792
793 ASSERT(global != NULL);
794
795 switch (cmd) {
796 case DDI_SUSPEND:
797 /*
798 * Do not disable the keyboard controller for x86 suspend, as
799 * the keyboard can be used to bring the system out of
800 * suspend.
801 */
802 #ifdef __sparc
803 /* Disable interrupts and controller devices before suspend */
804 i8042_write_command_byte(global, I8042_CMD_DISABLE_ALL);
805 #endif
806 return (DDI_SUCCESS);
807
808 case DDI_DETACH:
809 /* DETACH can only succeed if cleanup succeeds */
810 return (i8042_cleanup(global));
811
812 default:
813 return (DDI_FAILURE);
814 }
815 }
816
817 /*
818 * The primary interface to us from our children is via virtual registers.
819 * This is the entry point that allows our children to "map" these
820 * virtual registers.
821 */
822 static int
i8042_map(dev_info_t * dip,dev_info_t * rdip,ddi_map_req_t * mp,off_t offset,off_t len,caddr_t * addrp)823 i8042_map(
824 dev_info_t *dip,
825 dev_info_t *rdip,
826 ddi_map_req_t *mp,
827 off_t offset,
828 off_t len,
829 caddr_t *addrp)
830 {
831 struct i8042_port *port;
832 struct i8042 *global;
833 enum i8042_ports which_port;
834 int *iprop;
835 unsigned int iprop_len;
836 int rnumber;
837 ddi_acc_hdl_t *handle;
838 ddi_acc_impl_t *ap;
839
840 global = ddi_get_driver_private(dip);
841
842 switch (mp->map_type) {
843 case DDI_MT_REGSPEC:
844 which_port = *(int *)mp->map_obj.rp;
845 break;
846
847 case DDI_MT_RNUMBER:
848 rnumber = mp->map_obj.rnumber;
849 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, rdip,
850 DDI_PROP_DONTPASS, "reg", &iprop, &iprop_len) !=
851 DDI_SUCCESS) {
852 #if defined(DEBUG)
853 cmn_err(CE_WARN, "%s #%d: Missing 'reg' on %s@%s",
854 DRIVER_NAME(dip), ddi_get_instance(dip),
855 ddi_node_name(rdip), ddi_get_name_addr(rdip));
856 #endif
857 return (DDI_FAILURE);
858 }
859 #if defined(DEBUG)
860 if (iprop_len != 1) {
861 cmn_err(CE_WARN, "%s #%d: Malformed 'reg' on %s@%s",
862 DRIVER_NAME(dip), ddi_get_instance(dip),
863 ddi_node_name(rdip), ddi_get_name_addr(rdip));
864 return (DDI_FAILURE);
865 }
866 if (rnumber < 0 || rnumber >= iprop_len) {
867 cmn_err(CE_WARN, "%s #%d: bad map request for %s@%s",
868 DRIVER_NAME(dip), ddi_get_instance(dip),
869 ddi_node_name(rdip), ddi_get_name_addr(rdip));
870 return (DDI_FAILURE);
871 }
872 #endif
873 which_port = iprop[rnumber];
874 ddi_prop_free((void *)iprop);
875 #if defined(DEBUG)
876 if (which_port != MAIN_PORT && which_port != AUX_PORT) {
877 cmn_err(CE_WARN,
878 "%s #%d: bad 'reg' value %d on %s@%s",
879 DRIVER_NAME(dip), ddi_get_instance(dip),
880 which_port,
881 ddi_node_name(rdip), ddi_get_name_addr(rdip));
882 return (DDI_FAILURE);
883 }
884 #endif
885 break;
886
887 default:
888 #if defined(DEBUG)
889 cmn_err(CE_WARN, "%s #%d: unknown map type %d for %s@%s",
890 DRIVER_NAME(dip), ddi_get_instance(dip),
891 mp->map_type,
892 ddi_node_name(rdip), ddi_get_name_addr(rdip));
893 #endif
894 return (DDI_FAILURE);
895 }
896
897 #if defined(DEBUG)
898 if (offset != 0 || len != 0) {
899 cmn_err(CE_WARN,
900 "%s #%d: partial mapping attempt for %s@%s ignored",
901 DRIVER_NAME(dip), ddi_get_instance(dip),
902 ddi_node_name(rdip), ddi_get_name_addr(rdip));
903 }
904 #endif
905
906 port = &global->i8042_ports[which_port];
907
908 switch (mp->map_op) {
909 case DDI_MO_MAP_LOCKED:
910 #if defined(USE_SOFT_INTRS)
911 port->soft_intr_enabled = B_FALSE;
912 #else
913 port->intr_func = NULL;
914 #endif
915 port->wptr = 0;
916 port->rptr = 0;
917 port->dip = dip;
918 port->inumber = 0;
919 port->has_glock = B_FALSE;
920 port->initialized = B_TRUE;
921
922 handle = mp->map_handlep;
923 handle->ah_bus_private = port;
924 handle->ah_addr = 0;
925 ap = (ddi_acc_impl_t *)handle->ah_platform_private;
926 /*
927 * Support get8, put8 and _rep_put8
928 */
929 ap->ahi_put8 = i8042_put8;
930 ap->ahi_get8 = i8042_get8;
931 ap->ahi_put16 = NULL;
932 ap->ahi_get16 = NULL;
933 ap->ahi_put32 = NULL;
934 ap->ahi_get32 = NULL;
935 ap->ahi_put64 = NULL;
936 ap->ahi_get64 = NULL;
937 ap->ahi_rep_put8 = NULL;
938 ap->ahi_rep_get8 = NULL;
939 ap->ahi_rep_put16 = NULL;
940 ap->ahi_rep_get16 = NULL;
941 ap->ahi_rep_put32 = NULL;
942 ap->ahi_rep_get32 = NULL;
943 ap->ahi_rep_put64 = NULL;
944 ap->ahi_rep_get64 = NULL;
945 *addrp = 0;
946 return (DDI_SUCCESS);
947
948 case DDI_MO_UNMAP:
949 port->initialized = B_FALSE;
950 return (DDI_SUCCESS);
951
952 default:
953 cmn_err(CE_WARN, "%s: map operation %d not supported",
954 DRIVER_NAME(dip), mp->map_op);
955 return (DDI_FAILURE);
956 }
957 }
958
959 #ifdef __sparc
960 static void
i8042_timeout(void * arg)961 i8042_timeout(void *arg)
962 {
963 struct i8042 *i8042_p = (struct i8042 *)arg;
964 int interval;
965
966 /*
967 * Allow the polling speed to be changed on the fly --
968 * catch it here and update the intervals used.
969 */
970 if (i8042_fast_poll_interval != i8042_poll_interval) {
971 interval = i8042_poll_interval;
972 if (interval < I8042_MIN_POLL_INTERVAL)
973 interval = I8042_MIN_POLL_INTERVAL;
974 i8042_fast_poll_interval = interval;
975 i8042_slow_poll_interval = interval << 3;
976 }
977
978 /*
979 * If the ISR returned true, start polling at a faster rate to
980 * increate responsiveness. Once the keyboard or mouse go idle,
981 * the ISR will return UNCLAIMED, and we'll go back to the slower
982 * polling rate. This gives some positive hysteresis (but not
983 * negative, since we go back to the slower polling interval after
984 * only one UNCLAIMED). This has shown to be responsive enough,
985 * even for fast typers.
986 */
987 interval = (i8042_intr((caddr_t)i8042_p) == DDI_INTR_CLAIMED) ?
988 i8042_fast_poll_interval : i8042_slow_poll_interval;
989
990 if (i8042_polled_mode)
991 i8042_p->timeout_id = timeout(i8042_timeout, arg,
992 drv_usectohz(interval));
993 else
994 i8042_p->timeout_id = 0;
995 }
996 #endif
997
998 /*
999 * i8042 hardware interrupt routine. Called for both main and aux port
1000 * interrupts.
1001 */
1002 static unsigned int
i8042_intr(caddr_t arg)1003 i8042_intr(caddr_t arg)
1004 {
1005 struct i8042 *global = (struct i8042 *)arg;
1006 enum i8042_ports which_port;
1007 unsigned char stat;
1008 unsigned char byte;
1009 int new_wptr;
1010 struct i8042_port *port;
1011
1012 mutex_enter(&global->i8042_mutex);
1013
1014 stat = ddi_get8(global->io_handle, global->io_addr + I8042_STAT);
1015
1016 if (! (stat & I8042_STAT_OUTBF)) {
1017 ++i8042_unclaimed_interrupts;
1018 mutex_exit(&global->i8042_mutex);
1019 return (DDI_INTR_UNCLAIMED);
1020 }
1021
1022 byte = ddi_get8(global->io_handle, global->io_addr + I8042_DATA);
1023
1024 which_port = (stat & I8042_STAT_AUXBF) ? AUX_PORT : MAIN_PORT;
1025
1026 port = &global->i8042_ports[which_port];
1027
1028 if (! port->initialized) {
1029 mutex_exit(&global->i8042_mutex);
1030 return (DDI_INTR_CLAIMED);
1031 }
1032
1033 new_wptr = (port->wptr + 1) % BUFSIZ;
1034 if (new_wptr == port->rptr) {
1035 port->overruns++;
1036 #if defined(DEBUG)
1037 if (port->overruns % 50 == 1) {
1038 cmn_err(CE_WARN, "i8042/%d: %d overruns\n",
1039 which_port, port->overruns);
1040 }
1041 #endif
1042
1043 mutex_exit(&global->i8042_mutex);
1044 return (DDI_INTR_CLAIMED);
1045 }
1046
1047 port->buf[port->wptr] = byte;
1048 port->wptr = new_wptr;
1049
1050 #if defined(USE_SOFT_INTRS)
1051 if (port->soft_intr_enabled)
1052 (void) ddi_intr_trigger_softint(port->soft_hdl,
1053 port->intr_arg2);
1054 #endif
1055
1056 mutex_exit(&global->i8042_mutex);
1057
1058 #if !defined(USE_SOFT_INTRS)
1059 mutex_enter(&port->intr_mutex);
1060 if (port->intr_func != NULL)
1061 port->intr_func(port->intr_arg1, NULL);
1062 mutex_exit(&port->intr_mutex);
1063 #endif
1064
1065 return (DDI_INTR_CLAIMED);
1066 }
1067
1068 static void
i8042_write_command_byte(struct i8042 * global,unsigned char cb)1069 i8042_write_command_byte(struct i8042 *global, unsigned char cb)
1070 {
1071 mutex_enter(&global->i8042_out_mutex);
1072 i8042_send(global, I8042_CMD, I8042_CMD_WCB);
1073 i8042_send(global, I8042_DATA, cb);
1074 mutex_exit(&global->i8042_out_mutex);
1075 }
1076
1077 /*
1078 * Send a byte to either the i8042 command or data register, depending on
1079 * the argument.
1080 */
1081 static void
i8042_send(struct i8042 * global,int reg,unsigned char val)1082 i8042_send(struct i8042 *global, int reg, unsigned char val)
1083 {
1084 uint8_t stat;
1085 int tries = 0;
1086
1087 /*
1088 * First, wait for the i8042 to be ready to accept data.
1089 */
1090 /*CONSTANTCONDITION*/
1091 while (1) {
1092 stat = ddi_get8(global->io_handle,
1093 global->io_addr + I8042_STAT);
1094
1095 if ((stat & I8042_STAT_INBF) == 0) {
1096 ddi_put8(global->io_handle, global->io_addr+reg, val);
1097 break;
1098 }
1099
1100 /* Don't wait unless we're going to check again */
1101 if (++tries >= max_wait_iterations)
1102 break;
1103 else
1104 drv_usecwait(USECS_PER_WAIT);
1105 }
1106
1107 #ifdef DEBUG
1108 if (tries >= MAX_WAIT_ITERATIONS)
1109 cmn_err(CE_WARN, "i8042_send: timeout!");
1110 #endif
1111 }
1112
1113 /*
1114 * Here's the interface to the virtual registers on the device.
1115 *
1116 * Normal interrupt-driven I/O:
1117 *
1118 * I8042_INT_INPUT_AVAIL (r/o)
1119 * Interrupt mode input bytes available? Zero = No.
1120 * I8042_INT_INPUT_DATA (r/o)
1121 * Fetch interrupt mode input byte.
1122 * I8042_INT_OUTPUT_DATA (w/o)
1123 * Interrupt mode output byte.
1124 *
1125 * Polled I/O, used by (e.g.) kmdb, when normal system services are
1126 * unavailable:
1127 *
1128 * I8042_POLL_INPUT_AVAIL (r/o)
1129 * Polled mode input bytes available? Zero = No.
1130 * I8042_POLL_INPUT_DATA (r/o)
1131 * Polled mode input byte.
1132 * I8042_POLL_OUTPUT_DATA (w/o)
1133 * Polled mode output byte.
1134 *
1135 * Note that in polled mode we cannot use cmn_err; only prom_printf is safe.
1136 */
1137 static uint8_t
i8042_get8(ddi_acc_impl_t * handlep,uint8_t * addr)1138 i8042_get8(ddi_acc_impl_t *handlep, uint8_t *addr)
1139 {
1140 struct i8042_port *port;
1141 struct i8042 *global;
1142 uint8_t ret;
1143 ddi_acc_hdl_t *h;
1144 uint8_t stat;
1145
1146 h = (ddi_acc_hdl_t *)handlep;
1147
1148 port = (struct i8042_port *)h->ah_bus_private;
1149 global = port->i8042_global;
1150
1151 switch ((uintptr_t)addr) {
1152 case I8042_LOCK:
1153 ASSERT(port->has_glock != B_TRUE); /* No reentrancy */
1154 mutex_enter(&global->i8042_out_mutex);
1155 /*
1156 * Block other children requesting exclusive access here until
1157 * the child possessing it relinquishes the lock.
1158 */
1159 while (global->glock) {
1160 cv_wait(&global->glock_cv, &global->i8042_out_mutex);
1161 }
1162 port->has_glock = B_TRUE;
1163 global->glock = 1;
1164 mutex_exit(&global->i8042_out_mutex);
1165 ret = 0;
1166 break;
1167
1168 case I8042_UNLOCK:
1169 mutex_enter(&global->i8042_out_mutex);
1170 ASSERT(global->glock != 0);
1171 ASSERT(port->has_glock == B_TRUE);
1172 port->has_glock = B_FALSE;
1173 global->glock = 0;
1174 /*
1175 * Signal anyone waiting for exclusive access that it is now
1176 * available.
1177 */
1178 cv_signal(&global->glock_cv);
1179 mutex_exit(&global->i8042_out_mutex);
1180 ret = 0;
1181 break;
1182
1183 case I8042_INT_INPUT_AVAIL:
1184 mutex_enter(&global->i8042_mutex);
1185 ret = port->rptr != port->wptr;
1186 mutex_exit(&global->i8042_mutex);
1187 return (ret);
1188
1189 case I8042_INT_INPUT_DATA:
1190 mutex_enter(&global->i8042_mutex);
1191
1192 if (port->rptr != port->wptr) {
1193 ret = port->buf[port->rptr];
1194 port->rptr = (port->rptr + 1) % BUFSIZ;
1195 } else {
1196 #if defined(DEBUG)
1197 cmn_err(CE_WARN,
1198 "i8042: Tried to read from empty buffer");
1199 #endif
1200 ret = 0;
1201 }
1202
1203
1204 mutex_exit(&global->i8042_mutex);
1205
1206 break;
1207
1208 #if defined(DEBUG)
1209 case I8042_INT_OUTPUT_DATA:
1210 case I8042_POLL_OUTPUT_DATA:
1211 cmn_err(CE_WARN, "i8042: read of write-only register 0x%p",
1212 (void *)addr);
1213 ret = 0;
1214 break;
1215 #endif
1216
1217 case I8042_POLL_INPUT_AVAIL:
1218 if (port->rptr != port->wptr)
1219 return (B_TRUE);
1220 for (;;) {
1221 stat = ddi_get8(global->io_handle,
1222 global->io_addr + I8042_STAT);
1223 if ((stat & I8042_STAT_OUTBF) == 0)
1224 return (B_FALSE);
1225 switch (port->which) {
1226 case MAIN_PORT:
1227 if ((stat & I8042_STAT_AUXBF) == 0)
1228 return (B_TRUE);
1229 break;
1230 case AUX_PORT:
1231 if ((stat & I8042_STAT_AUXBF) != 0)
1232 return (B_TRUE);
1233 break;
1234 default:
1235 cmn_err(CE_WARN, "data from unknown port: %d",
1236 port->which);
1237 }
1238 /*
1239 * Data for wrong port pending; discard it.
1240 */
1241 (void) ddi_get8(global->io_handle,
1242 global->io_addr + I8042_DATA);
1243 }
1244
1245 /* NOTREACHED */
1246
1247 case I8042_POLL_INPUT_DATA:
1248 if (port->rptr != port->wptr) {
1249 ret = port->buf[port->rptr];
1250 port->rptr = (port->rptr + 1) % BUFSIZ;
1251 return (ret);
1252 }
1253
1254 stat = ddi_get8(global->io_handle,
1255 global->io_addr + I8042_STAT);
1256 if ((stat & I8042_STAT_OUTBF) == 0) {
1257 #if defined(DEBUG)
1258 prom_printf("I8042_POLL_INPUT_DATA: no data!\n");
1259 #endif
1260 return (0);
1261 }
1262 ret = ddi_get8(global->io_handle,
1263 global->io_addr + I8042_DATA);
1264 switch (port->which) {
1265 case MAIN_PORT:
1266 if ((stat & I8042_STAT_AUXBF) == 0)
1267 return (ret);
1268 break;
1269 case AUX_PORT:
1270 if ((stat & I8042_STAT_AUXBF) != 0)
1271 return (ret);
1272 break;
1273 }
1274 #if defined(DEBUG)
1275 prom_printf("I8042_POLL_INPUT_DATA: data for wrong port!\n");
1276 #endif
1277 return (0);
1278
1279 default:
1280 #if defined(DEBUG)
1281 cmn_err(CE_WARN, "i8042: read of undefined register 0x%p",
1282 (void *)addr);
1283 #endif
1284 ret = 0;
1285 break;
1286 }
1287 return (ret);
1288 }
1289
1290 static void
i8042_put8(ddi_acc_impl_t * handlep,uint8_t * addr,uint8_t value)1291 i8042_put8(ddi_acc_impl_t *handlep, uint8_t *addr, uint8_t value)
1292 {
1293 struct i8042 *global;
1294 struct i8042_port *port;
1295 ddi_acc_hdl_t *h;
1296
1297 h = (ddi_acc_hdl_t *)handlep;
1298 port = (struct i8042_port *)h->ah_bus_private;
1299 global = port->i8042_global;
1300
1301 switch ((uintptr_t)addr) {
1302 case I8042_INT_OUTPUT_DATA:
1303 case I8042_POLL_OUTPUT_DATA:
1304
1305 if ((uintptr_t)addr == I8042_INT_OUTPUT_DATA) {
1306 mutex_enter(&global->i8042_out_mutex);
1307
1308 /*
1309 * If no child has exclusive access, then proceed with
1310 * the put8 below. If a child (not the one making the
1311 * call) has exclusive access, wait for it to be
1312 * relinquished. The use of i8042_out_mutex prevents
1313 * children seeking exclusive access from getting it
1314 * while a child is writing to the 8042.
1315 */
1316 while (global->glock && !port->has_glock) {
1317 cv_wait(&global->glock_cv,
1318 &global->i8042_out_mutex);
1319 }
1320 }
1321
1322 if (port->which == AUX_PORT)
1323 i8042_send(global, I8042_CMD, I8042_CMD_WRITE_AUX);
1324
1325 i8042_send(global, I8042_DATA, value);
1326
1327 if ((uintptr_t)addr == I8042_INT_OUTPUT_DATA)
1328 mutex_exit(&global->i8042_out_mutex);
1329
1330 break;
1331
1332 #if defined(DEBUG)
1333 case I8042_INT_INPUT_AVAIL:
1334 case I8042_INT_INPUT_DATA:
1335 case I8042_POLL_INPUT_AVAIL:
1336 case I8042_POLL_INPUT_DATA:
1337 cmn_err(CE_WARN, "i8042: write of read-only register 0x%p",
1338 (void *)addr);
1339 break;
1340
1341 default:
1342 cmn_err(CE_WARN, "i8042: read of undefined register 0x%p",
1343 (void *)addr);
1344 break;
1345 #endif
1346 }
1347 }
1348
1349
1350 /* ARGSUSED */
1351 static int
i8042_intr_ops(dev_info_t * dip,dev_info_t * rdip,ddi_intr_op_t intr_op,ddi_intr_handle_impl_t * hdlp,void * result)1352 i8042_intr_ops(dev_info_t *dip, dev_info_t *rdip, ddi_intr_op_t intr_op,
1353 ddi_intr_handle_impl_t *hdlp, void *result)
1354 {
1355 struct i8042_port *port;
1356 #if defined(USE_SOFT_INTRS)
1357 struct i8042 *global;
1358 int ret;
1359 #endif
1360
1361 switch (intr_op) {
1362 case DDI_INTROP_SUPPORTED_TYPES:
1363 *(int *)result = DDI_INTR_TYPE_FIXED;
1364 break;
1365 case DDI_INTROP_GETCAP:
1366 if (i_ddi_intr_ops(dip, rdip, intr_op, hdlp, result)
1367 == DDI_FAILURE)
1368 *(int *)result = 0;
1369 break;
1370 case DDI_INTROP_NINTRS:
1371 case DDI_INTROP_NAVAIL:
1372 *(int *)result = 1;
1373 break;
1374 case DDI_INTROP_ALLOC:
1375 *(int *)result = hdlp->ih_scratch1;
1376 break;
1377 case DDI_INTROP_FREE:
1378 break;
1379 case DDI_INTROP_GETPRI:
1380 /* Hard coding it for x86 */
1381 *(int *)result = 5;
1382 break;
1383 case DDI_INTROP_ADDISR:
1384 port = ddi_get_parent_data(rdip);
1385
1386 #if defined(USE_SOFT_INTRS)
1387 global = port->i8042_global;
1388 ret = ddi_intr_add_softint(rdip, &port->soft_hdl,
1389 I8042_SOFTINT_PRI, hdlp->ih_cb_func, hdlp->ih_cb_arg1);
1390
1391 if (ret != DDI_SUCCESS) {
1392 #if defined(DEBUG)
1393 cmn_err(CE_WARN, "%s #%d: "
1394 "Cannot add soft interrupt for %s #%d, ret=%d.",
1395 DRIVER_NAME(dip), ddi_get_instance(dip),
1396 DRIVER_NAME(rdip), ddi_get_instance(rdip), ret);
1397 #endif /* defined(DEBUG) */
1398 return (ret);
1399 }
1400
1401 #else /* defined(USE_SOFT_INTRS) */
1402 mutex_enter(&port->intr_mutex);
1403 port->intr_func = hdlp->ih_cb_func;
1404 port->intr_arg1 = hdlp->ih_cb_arg1;
1405 port->intr_arg2 = hdlp->ih_cb_arg2;
1406 mutex_exit(&port->intr_mutex);
1407 #endif /* defined(USE_SOFT_INTRS) */
1408 break;
1409 case DDI_INTROP_REMISR:
1410 port = ddi_get_parent_data(rdip);
1411
1412 #if defined(USE_SOFT_INTRS)
1413 global = port->i8042_global;
1414 mutex_enter(&global->i8042_mutex);
1415 port->soft_hdl = 0;
1416 mutex_exit(&global->i8042_mutex);
1417 #else /* defined(USE_SOFT_INTRS) */
1418 mutex_enter(&port->intr_mutex);
1419 port->intr_func = NULL;
1420 mutex_exit(&port->intr_mutex);
1421 #endif /* defined(USE_SOFT_INTRS) */
1422 break;
1423 case DDI_INTROP_ENABLE:
1424 port = ddi_get_parent_data(rdip);
1425 #if defined(USE_SOFT_INTRS)
1426 global = port->i8042_global;
1427 mutex_enter(&global->i8042_mutex);
1428 port->soft_intr_enabled = B_TRUE;
1429 if (port->wptr != port->rptr)
1430 (void) ddi_intr_trigger_softint(port->soft_hdl,
1431 port->intr_arg2);
1432 mutex_exit(&global->i8042_mutex);
1433 #else /* defined(USE_SOFT_INTRS) */
1434 mutex_enter(&port->intr_mutex);
1435 if (port->wptr != port->rptr)
1436 port->intr_func(port->intr_arg1, port->intr_arg2);
1437 mutex_exit(&port->intr_mutex);
1438 #endif /* defined(USE_SOFT_INTRS) */
1439 break;
1440 case DDI_INTROP_DISABLE:
1441 #if defined(USE_SOFT_INTRS)
1442 port = ddi_get_parent_data(rdip);
1443 global = port->i8042_global;
1444 mutex_enter(&global->i8042_mutex);
1445 port->soft_intr_enabled = B_FALSE;
1446 (void) ddi_intr_remove_softint(port->soft_hdl);
1447 mutex_exit(&global->i8042_mutex);
1448 #endif /* defined(USE_SOFT_INTRS) */
1449 break;
1450 default:
1451 return (DDI_FAILURE);
1452 }
1453
1454 return (DDI_SUCCESS);
1455 }
1456
1457 static int
i8042_ctlops(dev_info_t * dip,dev_info_t * rdip,ddi_ctl_enum_t op,void * arg,void * result)1458 i8042_ctlops(dev_info_t *dip, dev_info_t *rdip,
1459 ddi_ctl_enum_t op, void *arg, void *result)
1460 {
1461 int *iprop;
1462 unsigned int iprop_len;
1463 int which_port;
1464 char name[16];
1465 struct i8042 *global;
1466 dev_info_t *child;
1467
1468 global = ddi_get_driver_private(dip);
1469
1470 switch (op) {
1471 case DDI_CTLOPS_INITCHILD:
1472 child = (dev_info_t *)arg;
1473 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, child,
1474 DDI_PROP_DONTPASS, "reg", &iprop, &iprop_len) !=
1475 DDI_SUCCESS) {
1476 #if defined(DEBUG)
1477 cmn_err(CE_WARN, "%s #%d: Missing 'reg' on %s@???",
1478 DRIVER_NAME(dip), ddi_get_instance(dip),
1479 ddi_node_name(child));
1480 #endif
1481 return (DDI_FAILURE);
1482 }
1483 which_port = iprop[0];
1484 ddi_prop_free((void *)iprop);
1485
1486 (void) sprintf(name, "%d", which_port);
1487 ddi_set_name_addr(child, name);
1488 ddi_set_parent_data(child,
1489 (caddr_t)&global->i8042_ports[which_port]);
1490 return (DDI_SUCCESS);
1491
1492 case DDI_CTLOPS_UNINITCHILD:
1493 child = (dev_info_t *)arg;
1494 ddi_set_name_addr(child, NULL);
1495 ddi_set_parent_data(child, NULL);
1496 return (DDI_SUCCESS);
1497
1498 case DDI_CTLOPS_REPORTDEV:
1499 cmn_err(CE_CONT, "?8042 device: %s@%s, %s # %d\n",
1500 ddi_node_name(rdip), ddi_get_name_addr(rdip),
1501 DRIVER_NAME(rdip), ddi_get_instance(rdip));
1502 return (DDI_SUCCESS);
1503
1504 default:
1505 return (ddi_ctlops(dip, rdip, op, arg, result));
1506 }
1507 /* NOTREACHED */
1508 }
1509
1510 #if defined(__i386) || defined(__amd64)
1511 static dev_info_t *
i8042_devi_findchild_by_node_name(dev_info_t * pdip,char * nodename)1512 i8042_devi_findchild_by_node_name(dev_info_t *pdip, char *nodename)
1513 {
1514 dev_info_t *child;
1515
1516 ASSERT(DEVI_BUSY_OWNED(pdip));
1517
1518 if (nodename == NULL) {
1519 return ((dev_info_t *)NULL);
1520 }
1521
1522 for (child = ddi_get_child(pdip); child != NULL;
1523 child = ddi_get_next_sibling(child)) {
1524
1525 if (strcmp(ddi_node_name(child), nodename) == 0)
1526 break;
1527 }
1528 return (child);
1529 }
1530
1531 static void
alloc_kb_mouse(dev_info_t * i8042_dip,int nodes_needed)1532 alloc_kb_mouse(dev_info_t *i8042_dip, int nodes_needed)
1533 {
1534 dev_info_t *xdip;
1535 int acpi_off = 0;
1536 char *acpi_prop;
1537
1538 /* don't alloc unless acpi is off */
1539 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, ddi_root_node(),
1540 DDI_PROP_DONTPASS, "acpi-enum", &acpi_prop) == DDI_PROP_SUCCESS) {
1541 if (strcmp("off", acpi_prop) == 0) {
1542 acpi_off = 1;
1543 }
1544 ddi_prop_free(acpi_prop);
1545 }
1546 if (acpi_off == 0) {
1547 return;
1548 }
1549
1550 if (nodes_needed & I8042_MOUSE) {
1551 /* mouse */
1552 ndi_devi_alloc_sleep(i8042_dip, "mouse",
1553 (pnode_t)DEVI_SID_NODEID, &xdip);
1554 (void) ndi_prop_update_int(DDI_DEV_T_NONE, xdip,
1555 "reg", 1);
1556 (void) ndi_prop_update_int(DDI_DEV_T_NONE, xdip,
1557 "interrupts", 2);
1558 (void) ndi_prop_update_string(DDI_DEV_T_NONE, xdip,
1559 "compatible", "pnpPNP,f03");
1560 /*
1561 * The device_type property does not matter on SPARC. Retain it
1562 * on x86 for compatibility with the previous pseudo-prom.
1563 */
1564 (void) ndi_prop_update_string(DDI_DEV_T_NONE, xdip,
1565 "device_type", "mouse");
1566 (void) ndi_devi_bind_driver(xdip, 0);
1567 }
1568
1569 if (nodes_needed & I8042_KEYBOARD) {
1570 /* keyboard */
1571 ndi_devi_alloc_sleep(i8042_dip, "keyboard",
1572 (pnode_t)DEVI_SID_NODEID, &xdip);
1573 (void) ndi_prop_update_int(DDI_DEV_T_NONE, xdip,
1574 "reg", 0);
1575 (void) ndi_prop_update_int(DDI_DEV_T_NONE, xdip,
1576 "interrupts", 1);
1577 (void) ndi_prop_update_string(DDI_DEV_T_NONE, xdip,
1578 "compatible", "pnpPNP,303");
1579 (void) ndi_prop_update_string(DDI_DEV_T_NONE, xdip,
1580 "device_type", "keyboard");
1581 (void) ndi_devi_bind_driver(xdip, 0);
1582 }
1583 }
1584 #endif
1585
1586 static int
i8042_bus_config(dev_info_t * parent,uint_t flags,ddi_bus_config_op_t op,void * arg,dev_info_t ** childp)1587 i8042_bus_config(dev_info_t *parent, uint_t flags,
1588 ddi_bus_config_op_t op, void *arg, dev_info_t **childp)
1589 {
1590 #if defined(__i386) || defined(__amd64)
1591 int nodes_needed = 0;
1592 int circ;
1593
1594 /*
1595 * On x86 systems, if ACPI is disabled, the only way the
1596 * keyboard and mouse can be enumerated is by creating them
1597 * manually. The following code searches for the existence of
1598 * the keyboard and mouse nodes and creates them if they are not
1599 * found.
1600 */
1601 ndi_devi_enter(parent, &circ);
1602 if (i8042_devi_findchild_by_node_name(parent, "keyboard") == NULL)
1603 nodes_needed |= I8042_KEYBOARD;
1604 if (i8042_devi_findchild_by_node_name(parent, "mouse") == NULL)
1605 nodes_needed |= I8042_MOUSE;
1606
1607 /* If the mouse and keyboard nodes do not already exist, create them */
1608 if (nodes_needed)
1609 alloc_kb_mouse(parent, nodes_needed);
1610 ndi_devi_exit(parent, circ);
1611 #endif
1612 return (ndi_busop_bus_config(parent, flags, op, arg, childp, 0));
1613 }
1614
1615 static int
i8042_bus_unconfig(dev_info_t * parent,uint_t flags,ddi_bus_config_op_t op,void * arg)1616 i8042_bus_unconfig(dev_info_t *parent, uint_t flags,
1617 ddi_bus_config_op_t op, void *arg)
1618 {
1619 /*
1620 * The NDI_UNCONFIG flag allows the reference count on this nexus to be
1621 * decremented when children's drivers are unloaded, enabling the nexus
1622 * itself to be unloaded.
1623 */
1624 return (ndi_busop_bus_unconfig(parent, flags | NDI_UNCONFIG, op, arg));
1625 }
1626
1627 #ifdef __sparc
1628 static int
i8042_build_interrupts_property(dev_info_t * dip)1629 i8042_build_interrupts_property(dev_info_t *dip)
1630 {
1631 dev_info_t *child = ddi_get_child(dip);
1632 uint_t nintr;
1633 int *intrs = NULL;
1634 int interrupts[MAX_INTERRUPTS];
1635 int i = 0;
1636
1637 /* Walk the children of this node, scanning for interrupts properties */
1638 while (child != NULL && i < MAX_INTERRUPTS) {
1639
1640 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, child,
1641 DDI_PROP_DONTPASS, "interrupts", &intrs, &nintr)
1642 == DDI_PROP_SUCCESS && intrs != NULL) {
1643
1644 while (nintr > 0 && i < MAX_INTERRUPTS) {
1645 interrupts[i++] = intrs[--nintr];
1646 }
1647 ddi_prop_free(intrs);
1648 }
1649
1650 child = ddi_get_next_sibling(child);
1651 }
1652
1653 if (ddi_prop_update_int_array(DDI_DEV_T_NONE, dip, "interrupts",
1654 interrupts, i) != DDI_PROP_SUCCESS) {
1655
1656 return (DDI_FAILURE);
1657 }
1658
1659 /*
1660 * Oh, the humanity. On the platforms on which we need to
1661 * synthesize an interrupts property, we ALSO need to update the
1662 * device_type property, and set it to "serial" in order for the
1663 * correct interrupt PIL to be chosen by the framework.
1664 */
1665 if (ddi_prop_update_string(DDI_DEV_T_NONE, dip, "device_type", "serial")
1666 != DDI_PROP_SUCCESS) {
1667
1668 return (DDI_FAILURE);
1669 }
1670
1671 return (DDI_SUCCESS);
1672 }
1673
1674 static boolean_t
i8042_is_polling_platform(void)1675 i8042_is_polling_platform(void)
1676 {
1677 /*
1678 * Returns true if this platform is one of the platforms
1679 * that has interrupt issues with the PS/2 keyboard/mouse.
1680 */
1681 if (PLATFORM_MATCH("SUNW,UltraAX-"))
1682 return (B_TRUE);
1683 else
1684 return (B_FALSE);
1685 }
1686 #endif
1687