2 * Copyright (c) 1997, 1998, 1999 Nicolas Souchu
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/sys/dev/ppbus/ppbconf.c,v 1.17.2.1 2000/05/24 00:20:57 n_hibma Exp $
27 * $DragonFly: src/sys/bus/ppbus/ppbconf.c,v 1.4 2003/08/07 21:16:47 dillon Exp $
30 #include "opt_ppb_1284.h"
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
37 #include <sys/malloc.h>
44 #define DEVTOSOFTC(dev) ((struct ppb_data *)device_get_softc(dev))
46 MALLOC_DEFINE(M_PPBUSDEV, "ppbusdev", "Parallel Port bus device");
54 ppbus_print_child(device_t bus, device_t dev)
56 struct ppb_device *ppbdev;
58 bus_print_child_header(bus, dev);
60 ppbdev = (struct ppb_device *)device_get_ivars(dev);
62 if (ppbdev->flags != 0)
63 printf(" flags 0x%x", ppbdev->flags);
65 printf(" on %s%d\n", device_get_name(bus), device_get_unit(bus));
71 ppbus_probe(device_t dev)
73 device_set_desc(dev, "Parallel port bus");
81 * Add a ppbus device, allocate/initialize the ivars
84 ppbus_add_child(device_t dev, int order, const char *name, int unit)
86 struct ppb_device *ppbdev;
89 /* allocate ivars for the new ppbus child */
90 ppbdev = malloc(sizeof(struct ppb_device), M_PPBUSDEV, M_NOWAIT);
93 bzero(ppbdev, sizeof *ppbdev);
95 /* initialize the ivars */
98 /* add the device as a child to the ppbus bus with the allocated
100 child = device_add_child_ordered(dev, order, name, unit);
101 device_set_ivars(child, ppbdev);
107 ppbus_read_ivar(device_t bus, device_t dev, int index, uintptr_t* val)
109 struct ppb_device *ppbdev = (struct ppb_device *)device_get_ivars(dev);
112 case PPBUS_IVAR_MODE:
113 /* XXX yet device mode = ppbus mode = chipset mode */
114 *val = (u_long)ppb_get_mode(bus);
115 ppbdev->mode = (u_short)*val;
118 *val = (u_long)ppbdev->avm;
121 BUS_READ_IVAR(device_get_parent(bus), bus, PPC_IVAR_IRQ, val);
131 ppbus_write_ivar(device_t bus, device_t dev, int index, u_long val)
133 struct ppb_device *ppbdev = (struct ppb_device *)device_get_ivars(dev);
136 case PPBUS_IVAR_MODE:
137 /* XXX yet device mode = ppbus mode = chipset mode */
138 ppb_set_mode(bus,val);
139 ppbdev->mode = ppb_get_mode(bus);
148 #define PPB_PNP_PRINTER 0
149 #define PPB_PNP_MODEM 1
150 #define PPB_PNP_NET 2
151 #define PPB_PNP_HDC 3
152 #define PPB_PNP_PCMCIA 4
153 #define PPB_PNP_MEDIA 5
154 #define PPB_PNP_FDC 6
155 #define PPB_PNP_PORTS 7
156 #define PPB_PNP_SCANNER 8
157 #define PPB_PNP_DIGICAM 9
159 #ifndef DONTPROBE_1284
161 static char *pnp_tokens[] = {
162 "PRINTER", "MODEM", "NET", "HDC", "PCMCIA", "MEDIA",
163 "FDC", "PORTS", "SCANNER", "DIGICAM", "", NULL };
166 static char *pnp_classes[] = {
167 "printer", "modem", "network device",
168 "hard disk", "PCMCIA", "multimedia device",
169 "floppy disk", "ports", "scanner",
170 "digital camera", "unknown device", NULL };
176 * Search the first occurence of a token within a string
178 * XXX should use strxxx() calls
181 search_token(char *str, int slen, char *token)
186 #define UNKNOWN_LENGTH -1
188 if (slen == UNKNOWN_LENGTH)
189 /* get string's length */
190 for (slen = 0, p = str; *p != '\0'; p++)
193 /* get token's length */
194 for (tlen = 0, p = token; *p != '\0'; p++)
200 for (i = 0; i <= slen-tlen; i++) {
201 for (j = 0; j < tlen; j++)
202 if (str[i+j] != token[j])
214 * Returns the class id. of the peripherial, -1 otherwise
217 ppb_pnp_detect(device_t bus)
219 char *token, *class = 0;
222 char str[PPB_PnP_STRING_SIZE+1];
223 int unit = device_get_unit(bus);
225 printf("Probing for PnP devices on ppbus%d:\n", unit);
227 if ((error = ppb_1284_read_id(bus, PPB_NIBBLE, str,
228 PPB_PnP_STRING_SIZE, &len)))
232 printf("ppb: <PnP> %d characters: ", len);
233 for (i = 0; i < len; i++)
234 printf("%c(0x%x) ", str[i], str[i]);
238 /* replace ';' characters by '\0' */
239 for (i = 0; i < len; i++)
240 str[i] = (str[i] == ';') ? '\0' : str[i];
242 if ((token = search_token(str, len, "MFG")) != NULL ||
243 (token = search_token(str, len, "MANUFACTURER")) != NULL)
244 printf("ppbus%d: <%s", unit,
245 search_token(token, UNKNOWN_LENGTH, ":") + 1);
247 printf("ppbus%d: <unknown", unit);
249 if ((token = search_token(str, len, "MDL")) != NULL ||
250 (token = search_token(str, len, "MODEL")) != NULL)
252 search_token(token, UNKNOWN_LENGTH, ":") + 1);
256 if ((token = search_token(str, len, "VER")) != NULL)
258 search_token(token, UNKNOWN_LENGTH, ":") + 1);
260 if ((token = search_token(str, len, "REV")) != NULL)
262 search_token(token, UNKNOWN_LENGTH, ":") + 1);
266 if ((token = search_token(str, len, "CLS")) != NULL) {
267 class = search_token(token, UNKNOWN_LENGTH, ":") + 1;
268 printf(" %s", class);
271 if ((token = search_token(str, len, "CMD")) != NULL ||
272 (token = search_token(str, len, "COMMAND")) != NULL)
274 search_token(token, UNKNOWN_LENGTH, ":") + 1);
279 /* identify class ident */
280 for (i = 0; pnp_tokens[i] != NULL; i++) {
281 if (search_token(class, len, pnp_tokens[i]) != NULL) {
287 class_id = PPB_PnP_UNKNOWN;
296 * Scan the ppbus for IEEE1284 compliant devices
299 ppb_scan_bus(device_t bus)
301 struct ppb_data * ppb = (struct ppb_data *)device_get_softc(bus);
303 int unit = device_get_unit(bus);
305 /* try all IEEE1284 modes, for one device only
307 * XXX We should implement the IEEE1284.3 standard to detect
308 * daisy chained devices
311 error = ppb_1284_negociate(bus, PPB_NIBBLE, PPB_REQUEST_ID);
313 if ((ppb->state == PPB_ERROR) && (ppb->error == PPB_NOT_IEEE1284))
316 ppb_1284_terminate(bus);
318 printf("ppbus%d: IEEE1284 device found ", unit);
320 if (!(error = ppb_1284_negociate(bus, PPB_NIBBLE, 0))) {
322 ppb_1284_terminate(bus);
325 if (!(error = ppb_1284_negociate(bus, PPB_PS2, 0))) {
327 ppb_1284_terminate(bus);
330 if (!(error = ppb_1284_negociate(bus, PPB_ECP, 0))) {
332 ppb_1284_terminate(bus);
335 if (!(error = ppb_1284_negociate(bus, PPB_ECP, PPB_USE_RLE))) {
337 ppb_1284_terminate(bus);
340 if (!(error = ppb_1284_negociate(bus, PPB_EPP, 0))) {
342 ppb_1284_terminate(bus);
345 /* try more IEEE1284 modes */
347 if (!(error = ppb_1284_negociate(bus, PPB_NIBBLE,
349 printf("/NIBBLE_ID");
350 ppb_1284_terminate(bus);
353 if (!(error = ppb_1284_negociate(bus, PPB_PS2,
356 ppb_1284_terminate(bus);
359 if (!(error = ppb_1284_negociate(bus, PPB_ECP,
362 ppb_1284_terminate(bus);
365 if (!(error = ppb_1284_negociate(bus, PPB_ECP,
366 PPB_REQUEST_ID | PPB_USE_RLE))) {
367 printf("/ECP_RLE_ID");
368 ppb_1284_terminate(bus);
371 if (!(error = ppb_1284_negociate(bus, PPB_COMPATIBLE,
372 PPB_EXTENSIBILITY_LINK))) {
373 printf("/Extensibility Link");
374 ppb_1284_terminate(bus);
380 /* detect PnP devices */
381 ppb->class_id = ppb_pnp_detect(bus);
389 #endif /* !DONTPROBE_1284 */
392 ppbus_attach(device_t dev)
395 /* Locate our children */
396 bus_generic_probe(dev);
398 #ifndef DONTPROBE_1284
399 /* detect IEEE1284 compliant devices */
401 #endif /* !DONTPROBE_1284 */
403 /* launch attachement of the added children */
404 bus_generic_attach(dev);
410 ppbus_setup_intr(device_t bus, device_t child, struct resource *r, int flags,
411 void (*ihand)(void *), void *arg, void **cookiep)
414 struct ppb_data *ppb = DEVTOSOFTC(bus);
415 struct ppb_device *ppbdev = (struct ppb_device *)device_get_ivars(child);
417 /* a device driver must own the bus to register an interrupt */
418 if (ppb->ppb_owner != child)
421 if ((error = BUS_SETUP_INTR(device_get_parent(bus), child, r, flags,
422 ihand, arg, cookiep)))
425 /* store the resource and the cookie for eventually forcing
426 * handler unregistration
428 ppbdev->intr_cookie = *cookiep;
429 ppbdev->intr_resource = r;
435 ppbus_teardown_intr(device_t bus, device_t child, struct resource *r, void *ih)
437 struct ppb_data *ppb = DEVTOSOFTC(bus);
438 struct ppb_device *ppbdev = (struct ppb_device *)device_get_ivars(child);
440 /* a device driver must own the bus to unregister an interrupt */
441 if ((ppb->ppb_owner != child) || (ppbdev->intr_cookie != ih) ||
442 (ppbdev->intr_resource != r))
445 ppbdev->intr_cookie = 0;
446 ppbdev->intr_resource = 0;
448 /* pass unregistration to the upper layer */
449 return (BUS_TEARDOWN_INTR(device_get_parent(bus), child, r, ih));
455 * Allocate the device to perform transfers.
457 * how : PPB_WAIT or PPB_DONTWAIT
460 ppb_request_bus(device_t bus, device_t dev, int how)
463 struct ppb_data *ppb = DEVTOSOFTC(bus);
464 struct ppb_device *ppbdev = (struct ppb_device *)device_get_ivars(dev);
468 if (ppb->ppb_owner) {
472 case (PPB_WAIT | PPB_INTR):
473 error = tsleep(ppb, PCATCH, "ppbreq", 0);
476 case (PPB_WAIT | PPB_NOINTR):
477 error = tsleep(ppb, 0, "ppbreq", 0);
481 return (EWOULDBLOCK);
486 ppb->ppb_owner = dev;
488 /* restore the context of the device
489 * The first time, ctx.valid is certainly false
490 * then do not change anything. This is usefull for
491 * drivers that do not set there operating mode
494 if (ppbdev->ctx.valid)
495 ppb_set_mode(bus, ppbdev->ctx.mode);
508 * Release the device allocated with ppb_request_bus()
511 ppb_release_bus(device_t bus, device_t dev)
514 struct ppb_data *ppb = DEVTOSOFTC(bus);
515 struct ppb_device *ppbdev = (struct ppb_device *)device_get_ivars(dev);
517 if (ppbdev->intr_resource != 0)
518 /* force interrupt handler unregistration when the ppbus is released */
519 if ((error = BUS_TEARDOWN_INTR(bus, dev, ppbdev->intr_resource,
520 ppbdev->intr_cookie)))
524 if (ppb->ppb_owner != dev) {
532 /* save the context of the device */
533 ppbdev->ctx.mode = ppb_get_mode(bus);
535 /* ok, now the context of the device is valid */
536 ppbdev->ctx.valid = 1;
538 /* wakeup waiting processes */
544 static devclass_t ppbus_devclass;
546 static device_method_t ppbus_methods[] = {
547 /* device interface */
548 DEVMETHOD(device_probe, ppbus_probe),
549 DEVMETHOD(device_attach, ppbus_attach),
552 DEVMETHOD(bus_add_child, ppbus_add_child),
553 DEVMETHOD(bus_print_child, ppbus_print_child),
554 DEVMETHOD(bus_read_ivar, ppbus_read_ivar),
555 DEVMETHOD(bus_write_ivar, ppbus_write_ivar),
556 DEVMETHOD(bus_setup_intr, ppbus_setup_intr),
557 DEVMETHOD(bus_teardown_intr, ppbus_teardown_intr),
558 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
563 static driver_t ppbus_driver = {
566 sizeof(struct ppb_data),
568 DRIVER_MODULE(ppbus, ppc, ppbus_driver, ppbus_devclass, 0, 0);