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if_plip.c (183053) if_plip.c (184130)
1/*-
2 * Copyright (c) 1997 Poul-Henning Kamp
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 * From Id: lpt.c,v 1.55.2.1 1996/11/12 09:08:38 phk Exp
27 */
28
29#include <sys/cdefs.h>
1/*-
2 * Copyright (c) 1997 Poul-Henning Kamp
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 * From Id: lpt.c,v 1.55.2.1 1996/11/12 09:08:38 phk Exp
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: head/sys/dev/ppbus/if_plip.c 183053 2008-09-15 22:26:32Z jhb $");
30__FBSDID("$FreeBSD: head/sys/dev/ppbus/if_plip.c 184130 2008-10-21 18:30:10Z jhb $");
31
32/*
33 * Parallel port TCP/IP interfaces added. I looked at the driver from
34 * MACH but this is a complete rewrite, and btw. incompatible, and it
35 * should perform better too. I have never run the MACH driver though.
36 *
37 * This driver sends two bytes (0x08, 0x00) in front of each packet,
38 * to allow us to distinguish another format later.

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142#ifdef PLIP_DEBUG
143static int volatile lptflag = 1;
144#else
145static int volatile lptflag = 0;
146#endif
147
148struct lp_data {
149 struct ifnet *sc_ifp;
31
32/*
33 * Parallel port TCP/IP interfaces added. I looked at the driver from
34 * MACH but this is a complete rewrite, and btw. incompatible, and it
35 * should perform better too. I have never run the MACH driver though.
36 *
37 * This driver sends two bytes (0x08, 0x00) in front of each packet,
38 * to allow us to distinguish another format later.

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142#ifdef PLIP_DEBUG
143static int volatile lptflag = 1;
144#else
145static int volatile lptflag = 0;
146#endif
147
148struct lp_data {
149 struct ifnet *sc_ifp;
150 device_t sc_dev;
150 u_char *sc_ifbuf;
151 int sc_iferrs;
152
153 struct resource *res_irq;
154};
155
156/* Tables for the lp# interface */
157static u_char *txmith;

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168static int lpinittables(void);
169static int lpioctl(struct ifnet *, u_long, caddr_t);
170static int lpoutput(struct ifnet *, struct mbuf *, struct sockaddr *,
171 struct rtentry *);
172static void lp_intr(void *);
173
174#define DEVTOSOFTC(dev) \
175 ((struct lp_data *)device_get_softc(dev))
151 u_char *sc_ifbuf;
152 int sc_iferrs;
153
154 struct resource *res_irq;
155};
156
157/* Tables for the lp# interface */
158static u_char *txmith;

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169static int lpinittables(void);
170static int lpioctl(struct ifnet *, u_long, caddr_t);
171static int lpoutput(struct ifnet *, struct mbuf *, struct sockaddr *,
172 struct rtentry *);
173static void lp_intr(void *);
174
175#define DEVTOSOFTC(dev) \
176 ((struct lp_data *)device_get_softc(dev))
176#define UNITODEVICE(unit) \
177 (devclass_get_device(lp_devclass, (unit)))
178
179static devclass_t lp_devclass;
180
181static void
182lp_identify(driver_t *driver, device_t parent)
183{
184 device_t dev;
185

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201
202static int
203lp_attach (device_t dev)
204{
205 struct lp_data *lp = DEVTOSOFTC(dev);
206 struct ifnet *ifp;
207 int rid = 0;
208
177
178static devclass_t lp_devclass;
179
180static void
181lp_identify(driver_t *driver, device_t parent)
182{
183 device_t dev;
184

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200
201static int
202lp_attach (device_t dev)
203{
204 struct lp_data *lp = DEVTOSOFTC(dev);
205 struct ifnet *ifp;
206 int rid = 0;
207
208 lp->sc_dev = dev;
209
209 /*
210 * Reserve the interrupt resource. If we don't have one, the
211 * attach fails.
212 */
213 lp->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
214 RF_SHAREABLE);
215 if (lp->res_irq == 0) {
216 device_printf(dev, "cannot reserve interrupt, failed.\n");

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279
280/*
281 * Process an ioctl request.
282 */
283
284static int
285lpioctl (struct ifnet *ifp, u_long cmd, caddr_t data)
286{
210 /*
211 * Reserve the interrupt resource. If we don't have one, the
212 * attach fails.
213 */
214 lp->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
215 RF_SHAREABLE);
216 if (lp->res_irq == 0) {
217 device_printf(dev, "cannot reserve interrupt, failed.\n");

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280
281/*
282 * Process an ioctl request.
283 */
284
285static int
286lpioctl (struct ifnet *ifp, u_long cmd, caddr_t data)
287{
287 device_t dev = UNITODEVICE(ifp->if_dunit);
288 struct lp_data *sc = ifp->if_softc;
289 device_t dev = sc->sc_dev;
288 device_t ppbus = device_get_parent(dev);
290 device_t ppbus = device_get_parent(dev);
289 struct lp_data *sc = DEVTOSOFTC(dev);
290 struct ifaddr *ifa = (struct ifaddr *)data;
291 struct ifreq *ifr = (struct ifreq *)data;
292 u_char *ptr;
293 void *ih;
294 int error;
295
296 switch (cmd) {
297

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555 sc->sc_ifp->if_ierrors++;
556 sc->sc_iferrs++;
557
558 /*
559 * We are not able to send receive anything for now,
560 * so stop wasting our time
561 */
562 if (sc->sc_iferrs > LPMAXERRS) {
291 struct ifaddr *ifa = (struct ifaddr *)data;
292 struct ifreq *ifr = (struct ifreq *)data;
293 u_char *ptr;
294 void *ih;
295 int error;
296
297 switch (cmd) {
298

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556 sc->sc_ifp->if_ierrors++;
557 sc->sc_iferrs++;
558
559 /*
560 * We are not able to send receive anything for now,
561 * so stop wasting our time
562 */
563 if (sc->sc_iferrs > LPMAXERRS) {
563 printf("lp%d: Too many errors, Going off-line.\n", device_get_unit(dev));
564 if_printf(sc->sc_ifp, "Too many errors, Going off-line.\n");
564 ppb_wctr(ppbus, 0x00);
565 sc->sc_ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
566 sc->sc_iferrs=0;
567 }
568
569 done:
570 splx(s);
571 return;

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584 return 1;
585 return 0;
586}
587
588static int
589lpoutput (struct ifnet *ifp, struct mbuf *m,
590 struct sockaddr *dst, struct rtentry *rt)
591{
565 ppb_wctr(ppbus, 0x00);
566 sc->sc_ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
567 sc->sc_iferrs=0;
568 }
569
570 done:
571 splx(s);
572 return;

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585 return 1;
586 return 0;
587}
588
589static int
590lpoutput (struct ifnet *ifp, struct mbuf *m,
591 struct sockaddr *dst, struct rtentry *rt)
592{
592 device_t dev = UNITODEVICE(ifp->if_dunit);
593 struct lp_data *sc = ifp->if_softc;
594 device_t dev = sc->sc_dev;
593 device_t ppbus = device_get_parent(dev);
594 int s, err;
595 struct mbuf *mm;
596 u_char *cp = "\0\0";
597 u_char chksum = 0;
598 int count = 0;
599 int i, len, spin;
600

--- 156 unchanged lines hidden --- 		595 device_t ppbus = device_get_parent(dev);
596 int s, err;
597 struct mbuf *mm;
598 u_char *cp = "\0\0";
599 u_char chksum = 0;
600 int count = 0;
601 int i, len, spin;
602

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