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ppi.c (184164) ppi.c (185003)
1/*-
2 * Copyright (c) 1997, 1998, 1999 Nicolas Souchu, Michael Smith
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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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
24 * SUCH DAMAGE.
25 *
26 *
27 */
28
29#include <sys/cdefs.h>
1/*-
2 * Copyright (c) 1997, 1998, 1999 Nicolas Souchu, Michael Smith
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

--- 13 unchanged lines hidden (view full) ---

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
24 * SUCH DAMAGE.
25 *
26 *
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: head/sys/dev/ppbus/ppi.c 184164 2008-10-22 15:00:22Z jhb $");
30__FBSDID("$FreeBSD: head/sys/dev/ppbus/ppi.c 185003 2008-11-16 17:42:02Z jhb $");
31#include "opt_ppb_1284.h"
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/module.h>
36#include <sys/bus.h>
37#include <sys/conf.h>
38#include <sys/kernel.h>

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110
111 return;
112}
113
114static void
115ppi_disable_intr(device_t ppidev)
116{
117 char r;
31#include "opt_ppb_1284.h"
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/module.h>
36#include <sys/bus.h>
37#include <sys/conf.h>
38#include <sys/kernel.h>

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110
111 return;
112}
113
114static void
115ppi_disable_intr(device_t ppidev)
116{
117 char r;
118 device_t ppbus = device_get_parent(ppidev);
118 device_t ppbus = device_get_parent(ppidev);
119
120 r = ppb_rctr(ppbus);
121 ppb_wctr(ppbus, r & ~IRQENABLE);
122
123 return;
124}
125
126#endif /* PERIPH_1284 */

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192 * nSelectin <-> Select 17 <-> 13
193 * nInit <-> nFault 15 <-> 16
194 *
195 */
196static void
197ppiintr(void *arg)
198{
199 device_t ppidev = (device_t)arg;
119
120 r = ppb_rctr(ppbus);
121 ppb_wctr(ppbus, r & ~IRQENABLE);
122
123 return;
124}
125
126#endif /* PERIPH_1284 */

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192 * nSelectin <-> Select 17 <-> 13
193 * nInit <-> nFault 15 <-> 16
194 *
195 */
196static void
197ppiintr(void *arg)
198{
199 device_t ppidev = (device_t)arg;
200 device_t ppbus = device_get_parent(ppidev);
200 device_t ppbus = device_get_parent(ppidev);
201 struct ppi_data *ppi = DEVTOSOFTC(ppidev);
202
203 ppi_disable_intr(ppidev);
204
205 switch (ppb_1284_get_state(ppbus)) {
206
207 /* accept IEEE1284 negotiation then wakeup a waiting process to
208 * continue negotiation at process level */

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251}
252#endif /* PERIPH_1284 */
253
254static int
255ppiopen(struct cdev *dev, int flags, int fmt, struct thread *td)
256{
257 struct ppi_data *ppi = dev->si_drv1;
258 device_t ppidev = ppi->ppi_device;
201 struct ppi_data *ppi = DEVTOSOFTC(ppidev);
202
203 ppi_disable_intr(ppidev);
204
205 switch (ppb_1284_get_state(ppbus)) {
206
207 /* accept IEEE1284 negotiation then wakeup a waiting process to
208 * continue negotiation at process level */

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251}
252#endif /* PERIPH_1284 */
253
254static int
255ppiopen(struct cdev *dev, int flags, int fmt, struct thread *td)
256{
257 struct ppi_data *ppi = dev->si_drv1;
258 device_t ppidev = ppi->ppi_device;
259 device_t ppbus = device_get_parent(ppidev);
259 device_t ppbus = device_get_parent(ppidev);
260 int res;
261
262 if (!(ppi->ppi_flags & HAVE_PPBUS)) {
263 if ((res = ppb_request_bus(ppbus, ppidev,
264 (flags & O_NONBLOCK) ? PPB_DONTWAIT :
265 (PPB_WAIT | PPB_INTR))))
266 return (res);
267
268 ppi->ppi_flags |= HAVE_PPBUS;
269
270#ifdef PERIPH_1284
271 if (ppi->intr_resource) {
272 /* register our interrupt handler */
260 int res;
261
262 if (!(ppi->ppi_flags & HAVE_PPBUS)) {
263 if ((res = ppb_request_bus(ppbus, ppidev,
264 (flags & O_NONBLOCK) ? PPB_DONTWAIT :
265 (PPB_WAIT | PPB_INTR))))
266 return (res);
267
268 ppi->ppi_flags |= HAVE_PPBUS;
269
270#ifdef PERIPH_1284
271 if (ppi->intr_resource) {
272 /* register our interrupt handler */
273 bus_setup_intr(ppidev, ppi->intr_resource,
273 bus_setup_intr(ppidev, ppi->intr_resource,
274 INTR_TYPE_TTY, NULL, ppiintr, dev,
275 &ppi->intr_cookie);
276 }
277#endif /* PERIPH_1284 */
278 }
279 ppi->ppi_count += 1;
280
281 return (0);
282}
283
284static int
285ppiclose(struct cdev *dev, int flags, int fmt, struct thread *td)
286{
287 struct ppi_data *ppi = dev->si_drv1;
288 device_t ppidev = ppi->ppi_device;
274 INTR_TYPE_TTY, NULL, ppiintr, dev,
275 &ppi->intr_cookie);
276 }
277#endif /* PERIPH_1284 */
278 }
279 ppi->ppi_count += 1;
280
281 return (0);
282}
283
284static int
285ppiclose(struct cdev *dev, int flags, int fmt, struct thread *td)
286{
287 struct ppi_data *ppi = dev->si_drv1;
288 device_t ppidev = ppi->ppi_device;
289 device_t ppbus = device_get_parent(ppidev);
289 device_t ppbus = device_get_parent(ppidev);
290
291 ppi->ppi_count --;
292 if (!ppi->ppi_count) {
293
294#ifdef PERIPH_1284
295 switch (ppb_1284_get_state(ppbus)) {
296 case PPB_PERIPHERAL_IDLE:
297 ppb_peripheral_terminate(ppbus, 0);

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323 * If no data is available, wait for it otherwise transfer as much as possible
324 */
325static int
326ppiread(struct cdev *dev, struct uio *uio, int ioflag)
327{
328#ifdef PERIPH_1284
329 struct ppi_data *ppi = dev->si_drv1;
330 device_t ppidev = ppi->ppi_device;
290
291 ppi->ppi_count --;
292 if (!ppi->ppi_count) {
293
294#ifdef PERIPH_1284
295 switch (ppb_1284_get_state(ppbus)) {
296 case PPB_PERIPHERAL_IDLE:
297 ppb_peripheral_terminate(ppbus, 0);

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323 * If no data is available, wait for it otherwise transfer as much as possible
324 */
325static int
326ppiread(struct cdev *dev, struct uio *uio, int ioflag)
327{
328#ifdef PERIPH_1284
329 struct ppi_data *ppi = dev->si_drv1;
330 device_t ppidev = ppi->ppi_device;
331 device_t ppbus = device_get_parent(ppidev);
331 device_t ppbus = device_get_parent(ppidev);
332 int len, error = 0;
333
334 switch (ppb_1284_get_state(ppbus)) {
335 case PPB_PERIPHERAL_IDLE:
336 ppb_peripheral_terminate(ppbus, 0);
337 /* FALLTHROUGH */
338
339 case PPB_FORWARD_IDLE:
340 /* if can't negotiate NIBBLE mode then try BYTE mode,
341 * the peripheral may be a computer
342 */
343 if ((ppb_1284_negociate(ppbus,
344 ppi->ppi_mode = PPB_NIBBLE, 0))) {
345
346 /* XXX Wait 2 seconds to let the remote host some
347 * time to terminate its interrupt
348 */
349 tsleep(ppi, PPBPRI, "ppiread", 2*hz);
332 int len, error = 0;
333
334 switch (ppb_1284_get_state(ppbus)) {
335 case PPB_PERIPHERAL_IDLE:
336 ppb_peripheral_terminate(ppbus, 0);
337 /* FALLTHROUGH */
338
339 case PPB_FORWARD_IDLE:
340 /* if can't negotiate NIBBLE mode then try BYTE mode,
341 * the peripheral may be a computer
342 */
343 if ((ppb_1284_negociate(ppbus,
344 ppi->ppi_mode = PPB_NIBBLE, 0))) {
345
346 /* XXX Wait 2 seconds to let the remote host some
347 * time to terminate its interrupt
348 */
349 tsleep(ppi, PPBPRI, "ppiread", 2*hz);
350
350
351 if ((error = ppb_1284_negociate(ppbus,
352 ppi->ppi_mode = PPB_BYTE, 0)))
353 return (error);
354 }
355 break;
356
357 case PPB_REVERSE_IDLE:
358 case PPB_EPP_IDLE:

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406 * Once negotiation done, transfer data
407 */
408static int
409ppiwrite(struct cdev *dev, struct uio *uio, int ioflag)
410{
411#ifdef PERIPH_1284
412 struct ppi_data *ppi = dev->si_drv1;
413 device_t ppidev = ppi->ppi_device;
351 if ((error = ppb_1284_negociate(ppbus,
352 ppi->ppi_mode = PPB_BYTE, 0)))
353 return (error);
354 }
355 break;
356
357 case PPB_REVERSE_IDLE:
358 case PPB_EPP_IDLE:

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406 * Once negotiation done, transfer data
407 */
408static int
409ppiwrite(struct cdev *dev, struct uio *uio, int ioflag)
410{
411#ifdef PERIPH_1284
412 struct ppi_data *ppi = dev->si_drv1;
413 device_t ppidev = ppi->ppi_device;
414 device_t ppbus = device_get_parent(ppidev);
414 device_t ppbus = device_get_parent(ppidev);
415 int len, error = 0, sent;
416
417#if 0
418 int ret;
419
420 #define ADDRESS MS_PARAM(0, 0, MS_TYP_PTR)
421 #define LENGTH MS_PARAM(0, 1, MS_TYP_INT)
422

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543 break;
544 case PPISEPPA: /* set EPP address bits */
545 ppb_wepp_A(ppbus, *val);
546 break;
547 default:
548 error = ENOTTY;
549 break;
550 }
415 int len, error = 0, sent;
416
417#if 0
418 int ret;
419
420 #define ADDRESS MS_PARAM(0, 0, MS_TYP_PTR)
421 #define LENGTH MS_PARAM(0, 1, MS_TYP_INT)
422

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543 break;
544 case PPISEPPA: /* set EPP address bits */
545 ppb_wepp_A(ppbus, *val);
546 break;
547 default:
548 error = ENOTTY;
549 break;
550 }
551
551
552 return (error);
553}
554
555static device_method_t ppi_methods[] = {
556 /* device interface */
557 DEVMETHOD(device_identify, ppi_identify),
558 DEVMETHOD(device_probe, ppi_probe),
559 DEVMETHOD(device_attach, ppi_attach),
560
561 { 0, 0 }
562};
563
564static driver_t ppi_driver = {
565 "ppi",
566 ppi_methods,
567 sizeof(struct ppi_data),
568};
569DRIVER_MODULE(ppi, ppbus, ppi_driver, ppi_devclass, 0, 0);
570MODULE_DEPEND(ppi, ppbus, 1, 1, 1);
552 return (error);
553}
554
555static device_method_t ppi_methods[] = {
556 /* device interface */
557 DEVMETHOD(device_identify, ppi_identify),
558 DEVMETHOD(device_probe, ppi_probe),
559 DEVMETHOD(device_attach, ppi_attach),
560
561 { 0, 0 }
562};
563
564static driver_t ppi_driver = {
565 "ppi",
566 ppi_methods,
567 sizeof(struct ppi_data),
568};
569DRIVER_MODULE(ppi, ppbus, ppi_driver, ppi_devclass, 0, 0);
570MODULE_DEPEND(ppi, ppbus, 1, 1, 1);