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      1 /* $NetBSD: lpt_sableio.c,v 1.12 2021/05/07 16:58:34 thorpej Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     33 
     34 __KERNEL_RCSID(0, "$NetBSD: lpt_sableio.c,v 1.12 2021/05/07 16:58:34 thorpej Exp $");
     35 
     36 #include <sys/param.h>
     37 #include <sys/systm.h>
     38 #include <sys/ioctl.h>
     39 #include <sys/select.h>
     40 #include <sys/tty.h>
     41 #include <sys/proc.h>
     42 #include <sys/conf.h>
     43 #include <sys/file.h>
     44 #include <sys/uio.h>
     45 #include <sys/kernel.h>
     46 #include <sys/syslog.h>
     47 #include <sys/types.h>
     48 #include <sys/device.h>
     49 
     50 #include <machine/intr.h>
     51 #include <sys/bus.h>
     52 
     53 #include <dev/ic/lptreg.h>
     54 #include <dev/ic/lptvar.h>
     55 
     56 #include <dev/pci/pcivar.h>
     57 #include <dev/isa/isavar.h>
     58 
     59 #include <alpha/sableio/sableiovar.h>
     60 
     61 struct lpt_sableio_softc {
     62 	struct lpt_softc sc_lpt;	/* real "lpt" softc */
     63 
     64 	/* STDIO-specific goo. */
     65 	void	*sc_ih;			/* interrupt handler */
     66 };
     67 
     68 static int	lpt_sableio_match(device_t, cfdata_t , void *);
     69 static void	lpt_sableio_attach(device_t, device_t, void *);
     70 
     71 CFATTACH_DECL_NEW(lpt_sableio, sizeof(struct lpt_sableio_softc),
     72     lpt_sableio_match, lpt_sableio_attach, NULL, NULL);
     73 
     74 static int
     75 lpt_sableio_match(device_t parent, cfdata_t match, void *aux)
     76 {
     77 	struct sableio_attach_args *sa = aux;
     78 
     79 	/* Always present. */
     80 	if (strcmp(sa->sa_name, match->cf_name) == 0)
     81 		return (1);
     82 
     83 	return (0);
     84 }
     85 
     86 static void
     87 lpt_sableio_attach(device_t parent, device_t self, void *aux)
     88 {
     89 	struct lpt_sableio_softc *ssc = device_private(self);
     90 	struct lpt_softc *sc = &ssc->sc_lpt;
     91 	struct sableio_attach_args *sa = aux;
     92 	const char *intrstr;
     93 	char buf[PCI_INTRSTR_LEN];
     94 	pci_intr_handle_t ih;
     95 
     96 	sc->sc_dev = self;
     97 	sc->sc_iot = sa->sa_iot;
     98 
     99 	if (bus_space_map(sc->sc_iot, sa->sa_ioaddr, LPT_NPORTS, 0,
    100 	    &sc->sc_ioh) != 0) {
    101 		aprint_error(": can't map i/o space\n");
    102 		return;
    103 	}
    104 
    105 	aprint_normal("\n");
    106 	aprint_naive("\n");
    107 
    108 	lpt_attach_subr(sc);
    109 
    110 	alpha_pci_intr_handle_init(&ih, sa->sa_sableirq[0], 0);
    111 
    112 	intrstr = pci_intr_string(sa->sa_pc, ih, buf, sizeof(buf));
    113 	ssc->sc_ih = pci_intr_establish(sa->sa_pc, ih, IPL_TTY, lptintr, sc);
    114 	if (ssc->sc_ih == NULL) {
    115 		aprint_error_dev(self, "unable to establish interrupt");
    116 		if (intrstr != NULL)
    117 			aprint_error(" at %s", intrstr);
    118 		aprint_error("\n");
    119 		return;
    120 	}
    121 	aprint_normal_dev(self, "interrupting at %s\n", intrstr);
    122 }
    123