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https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
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Cleanup to the INET part of lpt.c.
Reviewed by: phk Submitted by: pst
This commit is contained in:
parent
94c600b239
commit
e34fb4afd7
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=8369
@ -46,7 +46,7 @@
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* SUCH DAMAGE.
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*
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* from: unknown origin, 386BSD 0.1
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* $Id: lpt.c,v 1.27 1995/03/16 18:12:03 bde Exp $
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* $Id: lpt.c,v 1.28 1995/04/12 20:47:56 wollman Exp $
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*/
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/*
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@ -156,7 +156,9 @@
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#define LPMAXERRS 100
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#endif
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#define LPHDR 2 /* We send 0x08, 0x00 in front of packet */
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#define LPIPHDRLEN 2 /* We send 0x08, 0x00 in front of packet */
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#define LPIPTBLSIZE 256 /* Size of octet translation table */
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#define LPIP_SHAKE 0x40 /* This bit toggles between nibble reception */
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#endif /* INET */
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@ -236,11 +238,12 @@ int lptattach (struct isa_device *isdp);
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void lptintr (int unit);
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#ifdef INET
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/* Tables for the lp# interface */
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static u_char *txmith;
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#define txmitl (txmith+256)
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#define trecvh (txmith+512)
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#define trecvl (txmith+768)
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#define txmitl (txmith+(1*LPIPTBLSIZE))
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#define trecvh (txmith+(2*LPIPTBLSIZE))
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#define trecvl (txmith+(3*LPIPTBLSIZE))
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/* Functions for the lp# interface */
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static void lpattach(struct lpt_softc *,int);
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@ -255,7 +258,6 @@ struct isa_driver lptdriver = {
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lptprobe, lptattach, "lpt"
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};
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static struct kern_devconf kdc_lpt[NLPT] = { {
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0, 0, 0, /* filled in by dev_attach */
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"lpt", 0, { MDDT_ISA, 0, "tty" },
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@ -277,13 +279,11 @@ lpt_registerdev(struct isa_device *id)
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dev_attach(&kdc_lpt[id->id_unit]);
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}
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/*
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* Internal routine to lptprobe to do port tests of one byte value
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*/
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static int
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lpt_port_test(short port, u_char data, u_char mask)
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lpt_port_test (short port, u_char data, u_char mask)
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{
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int temp, timeout;
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@ -420,11 +420,11 @@ lptattach(struct isa_device *isdp)
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/* check if we can use interrupt */
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lprintf("oldirq %x\n", sc->sc_irq);
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if(isdp->id_irq) {
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if (isdp->id_irq) {
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sc->sc_irq = LP_HAS_IRQ | LP_USE_IRQ | LP_ENABLE_IRQ;
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printf("lpt%d: Interrupt-driven port\n", isdp->id_unit);
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#ifdef INET
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lpattach(sc,isdp->id_unit);
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lpattach(sc, isdp->id_unit);
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#endif
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} else {
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sc->sc_irq = 0;
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@ -443,7 +443,7 @@ lptattach(struct isa_device *isdp)
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*/
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int
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lptopen(dev_t dev, int flag)
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lptopen (dev_t dev, int flag)
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{
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struct lpt_softc *sc;
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int s;
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@ -458,16 +458,17 @@ lptopen(dev_t dev, int flag)
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if (sc->sc_if.if_flags & IFF_UP)
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return(EBUSY);
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#endif
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if (sc->sc_state) {
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lprintf("lp: still open\n") ;
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lprintf("still open %x\n", sc->sc_state);
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lprintf("lp: still open %x\n", sc->sc_state);
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return(EBUSY);
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} else sc->sc_state |= INIT;
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} else
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sc->sc_state |= INIT;
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sc->sc_flags = LPTFLAGS(minor(dev));
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/* Check for open with BYPASS flag set. */
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if(sc->sc_flags & LP_BYPASS) {
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if (sc->sc_flags & LP_BYPASS) {
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sc->sc_state = OPEN;
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return(0);
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}
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@ -477,21 +478,21 @@ lptopen(dev_t dev, int flag)
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port = sc->sc_port;
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/* set IRQ status according to ENABLE_IRQ flag */
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if(sc->sc_irq & LP_ENABLE_IRQ)
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if (sc->sc_irq & LP_ENABLE_IRQ)
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sc->sc_irq |= LP_USE_IRQ;
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else
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sc->sc_irq &= ~LP_USE_IRQ;
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/* init printer */
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if((sc->sc_flags & LP_NO_PRIME) == 0) {
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if ((sc->sc_flags & LP_NO_PRIME) == 0) {
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if((sc->sc_flags & LP_PRIMEOPEN) || sc->sc_primed == 0) {
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outb(port+lpt_control, 0);
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sc->sc_primed++;
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DELAY(500);
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}
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}
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outb(port+lpt_control, LPC_SEL|LPC_NINIT);
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outb (port+lpt_control, LPC_SEL|LPC_NINIT);
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/* wait till ready (printer running diagnostics) */
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trys = 0;
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@ -505,8 +506,8 @@ lptopen(dev_t dev, int flag)
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}
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/* wait 1/4 second, give up if we get a signal */
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if (tsleep ((caddr_t)sc, LPPRI|PCATCH, "lptinit",
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hz/4) != EWOULDBLOCK) {
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if (tsleep ((caddr_t)sc, LPPRI|PCATCH, "lptinit", hz/4) !=
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EWOULDBLOCK) {
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sc->sc_state = 0;
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splx(s);
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return (EBUSY);
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@ -514,13 +515,14 @@ lptopen(dev_t dev, int flag)
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/* is printer online and ready for output */
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} while ((inb(port+lpt_status) & (LPS_SEL|LPS_OUT|LPS_NBSY|LPS_NERR)) !=
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(LPS_SEL|LPS_NBSY|LPS_NERR));
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(LPS_SEL|LPS_NBSY|LPS_NERR));
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sc->sc_control = LPC_SEL|LPC_NINIT;
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if(sc->sc_flags&LP_AUTOLF)
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if (sc->sc_flags & LP_AUTOLF)
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sc->sc_control |= LPC_AUTOL;
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/* enable interrupt if interrupt-driven */
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if(sc->sc_irq & LP_USE_IRQ)
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if (sc->sc_irq & LP_USE_IRQ)
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sc->sc_control |= LPC_ENA;
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outb(port+lpt_control, sc->sc_control);
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@ -533,10 +535,11 @@ lptopen(dev_t dev, int flag)
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/* only use timeout if using interrupt */
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lprintf("irq %x\n", sc->sc_irq);
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if(sc->sc_irq & LP_USE_IRQ) {
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if (sc->sc_irq & LP_USE_IRQ) {
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sc->sc_state |= TOUT;
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timeout ((timeout_func_t)lptout, (caddr_t)sc, hz/2);
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}
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lprintf("opened.\n");
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return(0);
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}
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@ -546,9 +549,10 @@ lptout (struct lpt_softc * sc)
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{ int pl;
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lprintf ("T %x ", inb(sc->sc_port+lpt_status));
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if (sc->sc_state&OPEN)
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if (sc->sc_state & OPEN)
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timeout ((timeout_func_t)lptout, (caddr_t)sc, hz/2);
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else sc->sc_state &= ~TOUT;
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else
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sc->sc_state &= ~TOUT;
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if (sc->sc_state & ERROR)
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sc->sc_state &= ~ERROR;
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@ -595,6 +599,7 @@ lptclose(dev_t dev, int flag)
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outb(sc->sc_port+lpt_control, LPC_NINIT);
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brelse(sc->sc_inbuf);
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end_close:
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sc->sc_state = 0;
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sc->sc_xfercnt = 0;
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@ -813,7 +818,7 @@ lptioctl(dev_t dev, int cmd, caddr_t data, int flag)
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#ifdef INET
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static void
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lpattach(struct lpt_softc *sc,int unit)
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lpattach (struct lpt_softc *sc, int unit)
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{
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struct ifnet *ifp = &sc->sc_if;
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@ -828,37 +833,41 @@ lpattach(struct lpt_softc *sc,int unit)
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ifp->if_addrlen = 0;
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ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
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if_attach(ifp);
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printf("lp%d: TCP/IP capable interface\n",unit);
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printf("lp%d: TCP/IP capable interface\n", unit);
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}
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/*
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* Build the translation tables for the LPIP (BSD unix) protocol.
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* We don't want to calculate these nasties in our tight loop, so we
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* precalculate them when we initialize.
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*/
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static int
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lpinittables()
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lpinittables (void)
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{
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int i;
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if(!txmith)
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txmith = malloc(1024,M_DEVBUF,M_NOWAIT);
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if(!txmith)
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if (!txmith)
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txmith = malloc(4*LPIPTBLSIZE, M_DEVBUF, M_NOWAIT);
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if (!txmith)
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return 1;
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for(i=0;i<256;i++) {
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for (i=0; i < LPIPTBLSIZE; i++) {
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txmith[i] = ((i & 0x80) >> 3) | ((i & 0x70) >> 4) | 0x08;
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txmitl[i] = ((i & 0x08) << 1) | (i & 0x07);
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trecvh[i] = ((~i) & 0x80) | ((i & 0x38) << 1);
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trecvl[i] = (((~i) & 0x80) >> 4) | ((i & 0x38) >> 3);
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}
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return 0;
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}
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/*
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* Process an ioctl request.
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*/
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/* ARGSUSED */
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static int
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lpioctl(struct ifnet *ifp, int cmd, caddr_t data)
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lpioctl (struct ifnet *ifp, int cmd, caddr_t data)
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{
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struct lpt_softc *sc = lpt_sc + ifp->if_unit;
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struct ifaddr *ifa = (struct ifaddr *)data;
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@ -876,31 +885,32 @@ lpioctl(struct ifnet *ifp, int cmd, caddr_t data)
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/* FALLTHROUGH */
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case SIOCSIFFLAGS:
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if ((!(ifp->if_flags & IFF_UP)) && (ifp->if_flags & IFF_RUNNING)) {
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outb(sc->sc_port+2, 0x00);
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outb(sc->sc_port + lpt_control, 0x00);
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ifp->if_flags &= ~IFF_RUNNING;
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break;
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}
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if (((ifp->if_flags & IFF_UP)) && (!(ifp->if_flags & IFF_RUNNING))) {
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if(lpinittables())
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if (lpinittables())
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return ENOBUFS;
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sc->sc_ifbuf = malloc(sc->sc_if.if_mtu+LPHDR,M_DEVBUF,M_WAITOK);
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if(!sc->sc_ifbuf)
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sc->sc_ifbuf = malloc(sc->sc_if.if_mtu + LPIPHDRLEN,
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M_DEVBUF, M_WAITOK);
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if (!sc->sc_ifbuf)
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return ENOBUFS;
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outb(sc->sc_port+2, 0x10);
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outb(sc->sc_port + lpt_control, LPC_ENA);
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ifp->if_flags |= IFF_RUNNING;
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}
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break;
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case SIOCSIFMTU:
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ptr = sc->sc_ifbuf;
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sc->sc_ifbuf = malloc(ifr->ifr_metric+LPHDR,M_DEVBUF,M_NOWAIT);
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if(!sc->sc_ifbuf) {
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sc->sc_ifbuf = malloc(ifr->ifr_metric+LPIPHDRLEN, M_DEVBUF, M_NOWAIT);
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if (!sc->sc_ifbuf) {
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sc->sc_ifbuf = ptr;
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return ENOBUFS;
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}
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if (ptr)
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free(ptr,M_DEVBUF);
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free(ptr,M_DEVBUF);
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sc->sc_if.if_mtu = ifr->ifr_metric;
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break;
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@ -909,142 +919,176 @@ lpioctl(struct ifnet *ifp, int cmd, caddr_t data)
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break;
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default:
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lprintf("LP:ioctl%x\n",cmd);
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lprintf("LP:ioctl(0x%x)\n",cmd);
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return EINVAL;
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}
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return 0;
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}
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static void
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lpintr(int unit)
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lpintr (int unit)
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{
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struct lpt_softc *sc = lpt_sc + unit;
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int len,s,j;
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int port = sc->sc_port+1;
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struct lpt_softc *sc = lpt_sc + unit;
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register int lpt_data_port = sc->sc_port + lpt_data;
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register int lpt_stat_port = sc->sc_port + lpt_status;
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int lpt_ctrl_port = sc->sc_port + lpt_control;
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int len, s, j;
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u_char *bp;
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u_long c, cl;
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u_char c, cl;
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struct mbuf *top;
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s = splhigh();
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while((inb(port)&0x40)) {
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len = sc->sc_if.if_mtu + LPHDR;
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bp = sc->sc_ifbuf;
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while(len--) {
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cl = inb(port--);
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outb(port++,8);
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while ((inb(lpt_stat_port) & LPIP_SHAKE)) {
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len = sc->sc_if.if_mtu + LPIPHDRLEN;
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bp = sc->sc_ifbuf;
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while (len--) {
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cl = inb(lpt_stat_port);
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outb(lpt_data_port, 8);
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j = LPMAXSPIN2;
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while((inb(port)&0x40))
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while((inb(lpt_stat_port) & LPIP_SHAKE))
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if(!--j) goto err;
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c = inb(port--);
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outb(port++,0);
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c = inb(lpt_stat_port);
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outb(lpt_data_port, 0);
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*bp++= trecvh[cl] | trecvl[c];
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j = LPMAXSPIN2;
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while(!((cl=inb(port)) & 0x40)) {
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if(cl != c && (((cl=inb(port))^0xb8)&0xf8) == (c&0xf8))
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while (!((cl=inb(lpt_stat_port)) & LPIP_SHAKE)) {
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if (cl != c &&
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(((cl = inb(lpt_stat_port)) ^ 0xb8) & 0xf8) ==
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(c & 0xf8))
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goto end;
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if(!--j) goto err;
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if (!--j) goto err;
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}
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}
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end:
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len = bp - sc->sc_ifbuf;
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if(len <= LPHDR)
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if (len <= LPIPHDRLEN)
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goto err;
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sc->sc_iferrs=0;
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sc->sc_iferrs = 0;
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if(IF_QFULL(&ipintrq)) {
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if (IF_QFULL(&ipintrq)) {
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lprintf("DROP");
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IF_DROP(&ipintrq);
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goto done;
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}
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len -= LPHDR;
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len -= LPIPHDRLEN;
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sc->sc_if.if_ipackets++;
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sc->sc_if.if_ibytes += len;
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top = m_devget(sc->sc_ifbuf+LPHDR, len, 0, &sc->sc_if, 0);
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if(top) {
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top = m_devget(sc->sc_ifbuf + LPIPHDRLEN, len, 0, &sc->sc_if, 0);
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if (top) {
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IF_ENQUEUE(&ipintrq, top);
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schednetisr(NETISR_IP);
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}
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}
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goto done;
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err:
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outb(sc->sc_port,0x00);
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outb(lpt_data_port, 0);
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lprintf("R");
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sc->sc_if.if_ierrors++;
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sc->sc_iferrs++;
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if(sc->sc_iferrs > LPMAXERRS) {
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/* We are not able to send receive anything for now,
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* so stop wasting our time
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*/
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/*
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* We are not able to send receive anything for now,
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* so stop wasting our time
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*/
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if (sc->sc_iferrs > LPMAXERRS) {
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printf("lp%d: Too many errors, Going off-line.\n", unit);
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outb(sc->sc_port+2, 0x00);
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outb(lpt_ctrl_port, 0x00);
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sc->sc_if.if_flags &= ~IFF_RUNNING;
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sc->sc_iferrs=0;
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}
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done:
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splx(s);
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return;
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}
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static inline int
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lpoutbyte (u_char byte, int spin, int data_port, int status_port)
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{
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outb(data_port, txmith[byte]);
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while (!(inb(status_port) & LPIP_SHAKE))
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if (--spin == 0)
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return 1;
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outb(data_port, txmitl[byte]);
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while (inb(status_port) & LPIP_SHAKE)
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if (--spin == 0)
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return 1;
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return 0;
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}
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static int
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lpoutput(struct ifnet *ifp, struct mbuf *m,
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struct sockaddr *dst, struct rtentry *rt)
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lpoutput (struct ifnet *ifp, struct mbuf *m,
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struct sockaddr *dst, struct rtentry *rt)
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{
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register int port = lpt_sc[ifp->if_unit].sc_port+1;
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int s,i;
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u_char *cp = "\0\0";
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struct mbuf *mm=m;
|
||||
register int lpt_data_port = lpt_sc[ifp->if_unit].sc_port + lpt_data;
|
||||
register int lpt_stat_port = lpt_sc[ifp->if_unit].sc_port + lpt_status;
|
||||
int lpt_ctrl_port = lpt_sc[ifp->if_unit].sc_port + lpt_control;
|
||||
|
||||
s=splhigh();
|
||||
int s, err;
|
||||
struct mbuf *mm;
|
||||
u_char *cp = "\0\0";
|
||||
|
||||
/* We need a sensible value if we abort */
|
||||
cp++;
|
||||
|
||||
/* Suspend (on laptops) or receive-errors might have taken us offline */
|
||||
outb(port+1, 0x10);
|
||||
ifp->if_flags |= IFF_RUNNING;
|
||||
|
||||
if(inb(port)&0x40) {
|
||||
err = 1; /* assume we're aborting because of an error */
|
||||
|
||||
s = splhigh();
|
||||
|
||||
/* Suspend (on laptops) or receive-errors might have taken us offline */
|
||||
outb(lpt_ctrl_port, LPC_ENA);
|
||||
|
||||
if (inb(lpt_stat_port) & LPIP_SHAKE) {
|
||||
lprintf("&");
|
||||
lptintr(ifp->if_unit);
|
||||
}
|
||||
i = LPMAXSPIN1;
|
||||
outb(port-1,txmith[0x08]);
|
||||
while(!(inb(port)&0x40)) if(!--i) goto end;
|
||||
outb(port-1,txmitl[0x08]);
|
||||
while((inb(port)&0x40)) if(!--i) goto end;
|
||||
|
||||
i = LPMAXSPIN2;
|
||||
outb(port-1,txmith[0x00]);
|
||||
while(!(inb(port)&0x40)) if(!--i) goto end;
|
||||
outb(port-1,txmitl[0x00]);
|
||||
while((inb(port)&0x40)) if(!--i) goto end;
|
||||
if (lpoutbyte(0x08, LPMAXSPIN1, lpt_data_port, lpt_stat_port))
|
||||
goto end;
|
||||
if (lpoutbyte(0x00, LPMAXSPIN2, lpt_data_port, lpt_stat_port))
|
||||
goto end;
|
||||
|
||||
mm = m;
|
||||
do {
|
||||
cp = mtod(mm,u_char *);
|
||||
for(;mm->m_len--;i=LPMAXSPIN2) {
|
||||
outb(port-1,txmith[*cp]);
|
||||
while(!(inb(port)&0x40)) if(!--i) goto end;
|
||||
outb(port-1,txmitl[*cp++]);
|
||||
while((inb(port)&0x40)) if(!--i) goto end;
|
||||
}
|
||||
while (mm->m_len--)
|
||||
if (lpoutbyte(*cp++, LPMAXSPIN2, lpt_data_port, lpt_stat_port))
|
||||
goto end;
|
||||
} while ((mm = mm->m_next));
|
||||
|
||||
err = 0; /* no errors were encountered */
|
||||
|
||||
end:
|
||||
outb(port-1,txmitl[cp[-1]] ^ 0x17);
|
||||
if(i) {
|
||||
ifp->if_opackets++;
|
||||
ifp->if_obytes += m->m_pkthdr.len;
|
||||
} else {
|
||||
--cp;
|
||||
outb(lpt_data_port, txmitl[*cp] ^ 0x17);
|
||||
|
||||
if (err) { /* if we didn't timeout... */
|
||||
ifp->if_oerrors++;
|
||||
lprintf("X");
|
||||
} else {
|
||||
ifp->if_opackets++;
|
||||
ifp->if_obytes += m->m_pkthdr.len;
|
||||
}
|
||||
|
||||
m_freem(m);
|
||||
if((inb(port)&0x40)) {
|
||||
|
||||
if (inb(lpt_stat_port) & LPIP_SHAKE) {
|
||||
lprintf("^");
|
||||
lptintr(ifp->if_unit);
|
||||
}
|
||||
(void)splx(s);
|
||||
|
||||
(void) splx(s);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user