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      1 /*	$NetBSD: com_ssio.c,v 1.3 2019/04/15 20:40:37 skrll Exp $	*/
      2 
      3 /*	$OpenBSD: com_ssio.c,v 1.2 2007/06/24 16:28:39 kettenis Exp $	*/
      4 
      5 /*
      6  * Copyright (c) 2007 Mark Kettenis
      7  *
      8  * Permission to use, copy, modify, and distribute this software for any
      9  * purpose with or without fee is hereby granted, provided that the above
     10  * copyright notice and this permission notice appear in all copies.
     11  *
     12  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     18  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     19  */
     20 
     21 #include <sys/param.h>
     22 #include <sys/systm.h>
     23 #include <sys/device.h>
     24 #include <sys/tty.h>
     25 
     26 #include <sys/bus.h>
     27 #include <machine/iomod.h>
     28 
     29 #include <dev/ic/comreg.h>
     30 #include <dev/ic/comvar.h>
     31 
     32 #include <hppa/hppa/machdep.h>
     33 #include <hppa/dev/ssiovar.h>
     34 
     35 void *ssio_intr_establish(int, int, int (*)(void *), void *,
     36     const char *);
     37 
     38 #define COM_SSIO_FREQ	1843200
     39 
     40 struct com_ssio_softc {
     41 	struct	com_softc sc_com;	/* real "com" softc */
     42 	void	*sc_ih;			/* interrupt handler */
     43 };
     44 
     45 int     com_ssio_match(device_t, cfdata_t, void *);
     46 void    com_ssio_attach(device_t, device_t, void *);
     47 
     48 CFATTACH_DECL_NEW(com_ssio, sizeof(struct com_ssio_softc), com_ssio_match,
     49     com_ssio_attach, NULL, NULL);
     50 
     51 int
     52 com_ssio_match(device_t parent, cfdata_t match, void *aux)
     53 {
     54 	cfdata_t cf = match;
     55 	struct ssio_attach_args *saa = aux;
     56 
     57 	if (strcmp(saa->saa_name, "com") != 0)
     58 		return (0);
     59 
     60 	/* Check locators. */
     61 	if (cf->ssiocf_irq != SSIO_UNK_IRQ && cf->ssiocf_irq != saa->saa_irq)
     62 		return (0);
     63 
     64 	return (1);
     65 }
     66 
     67 void
     68 com_ssio_attach(device_t parent, device_t self, void *aux)
     69 {
     70 	struct com_ssio_softc *sc_ssio = device_private(self);
     71 	struct com_softc *sc = &sc_ssio->sc_com;
     72 	struct ssio_attach_args *saa = aux;
     73 	int pagezero_cookie;
     74 
     75 	bus_addr_t iobase;
     76 	bus_space_handle_t ioh;
     77 	bus_space_tag_t iot;
     78 
     79 	sc->sc_dev = self;
     80 	iobase = saa->saa_iobase;
     81 	iot = saa->saa_iot;
     82 	if (bus_space_map(iot, iobase, COM_NPORTS,
     83 	    0, &ioh)) {
     84 		aprint_error(": can't map I/O space\n");
     85 		return;
     86 	}
     87 
     88         /* Test if this is the console. */
     89 	pagezero_cookie = hppa_pagezero_map();
     90 	if (PAGE0->mem_cons.pz_class == PCL_DUPLEX &&
     91 	    PAGE0->mem_cons.pz_hpa == (struct iomod *)ioh) {
     92 		bus_space_unmap(iot, ioh, COM_NPORTS);
     93 		if (comcnattach(iot, iobase, B9600, COM_SSIO_FREQ,
     94 		    COM_TYPE_NORMAL,
     95 		    (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8) != 0) {
     96 			aprint_error(": can't comcnattach\n");
     97 			hppa_pagezero_unmap(pagezero_cookie);
     98 			return;
     99 		}
    100 	}
    101 	hppa_pagezero_unmap(pagezero_cookie);
    102 
    103 	sc->sc_frequency = COM_SSIO_FREQ;
    104 	com_init_regs(&sc->sc_regs, iot, ioh, iobase);
    105 	com_attach_subr(sc);
    106 
    107 	sc_ssio->sc_ih = ssio_intr_establish(IPL_TTY, saa->saa_irq,
    108 	    comintr, sc, device_xname(self));
    109 }
    110