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lpt_ebus.c revision 1.21 
      1 /*	$NetBSD: lpt_ebus.c,v 1.21 2008/03/07 17:15:51 cube Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999, 2000 Matthew R. Green
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     23  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     26  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     28  * SUCH DAMAGE.
     29  */
     30 
     31 /*
     32  * NS Super I/O PC87332VLJ "lpt" to ebus attachment
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 __KERNEL_RCSID(0, "$NetBSD: lpt_ebus.c,v 1.21 2008/03/07 17:15:51 cube Exp $");
     37 
     38 #include <sys/types.h>
     39 #include <sys/param.h>
     40 #include <sys/systm.h>
     41 #include <sys/device.h>
     42 #include <sys/tty.h>
     43 
     44 #include <machine/bus.h>
     45 
     46 #include <dev/ebus/ebusreg.h>
     47 #include <dev/ebus/ebusvar.h>
     48 
     49 #include <dev/ic/lptvar.h>
     50 
     51 int	lpt_ebus_match(device_t, cfdata_t , void *);
     52 void	lpt_ebus_attach(device_t, device_t, void *);
     53 
     54 CFATTACH_DECL_NEW(lpt_ebus, sizeof(struct lpt_softc),
     55     lpt_ebus_match, lpt_ebus_attach, NULL, NULL);
     56 
     57 #define	ROM_LPT_NAME	"ecpp"
     58 
     59 int
     60 lpt_ebus_match(device_t parent, cfdata_t match, void *aux)
     61 {
     62 	struct ebus_attach_args *ea = aux;
     63 
     64 	if (strcmp(ea->ea_name, ROM_LPT_NAME) == 0)
     65 		return (1);
     66 
     67 	return (0);
     68 }
     69 
     70 void
     71 lpt_ebus_attach(device_t parent, device_t self, void *aux)
     72 {
     73 	struct lpt_softc *sc = device_private(self);
     74 	struct ebus_attach_args *ea = aux;
     75 	int i;
     76 
     77 	sc->sc_dev = self;
     78 	sc->sc_iot = ea->ea_bustag;
     79 	/*
     80 	 * Addresses that should be supplied by the prom:
     81 	 *	- normal lpt registers
     82 	 *	- ns873xx configuration registers
     83 	 *	- DMA space
     84 	 * The `lpt' driver does not use DMA accesses, so we can
     85 	 * ignore that for now.  We should enable the lpt port in
     86 	 * the ns873xx registers here. XXX
     87 	 *
     88 	 * Use the prom address if there.
     89 	 */
     90 	if (ea->ea_nvaddr)
     91 		sparc_promaddr_to_handle(sc->sc_iot, ea->ea_vaddr[0],
     92 			&sc->sc_ioh);
     93 	else if (bus_space_map(sc->sc_iot,
     94 			      EBUS_ADDR_FROM_REG(&ea->ea_reg[0]),
     95 			      ea->ea_reg[0].size,
     96 			      0,
     97 			      &sc->sc_ioh) != 0) {
     98 		aprint_error(": can't map register space\n");
     99                 return;
    100 	}
    101 
    102 	for (i = 0; i < ea->ea_nintr; i++)
    103 		bus_intr_establish(ea->ea_bustag, ea->ea_intr[i],
    104 				   IPL_SERIAL, lptintr, sc);
    105 	aprint_normal("\n");
    106 
    107 	lpt_attach_subr(sc);
    108 }
    109