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      1 /*	$NetBSD: if_smsh_gxio.c,v 1.3 2010/08/28 04:30:24 kiyohara Exp $	*/
      2 /*
      3  * Copyright (c) 2008 KIYOHARA Takashi
      4  * All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     18  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
     19  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     20  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     23  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     24  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     25  * POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: if_smsh_gxio.c,v 1.3 2010/08/28 04:30:24 kiyohara Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/device.h>
     33 #include <sys/errno.h>
     34 #include <sys/bus.h>
     35 #include <sys/systm.h>
     36 
     37 #include <evbarm/gumstix/gumstixvar.h>
     38 
     39 #include <net/if.h>
     40 #include <net/if_ether.h>
     41 #include <net/if_media.h>
     42 
     43 #include <dev/mii/miivar.h>
     44 
     45 #include <dev/ic/lan9118var.h>
     46 #include <dev/ic/lan9118reg.h>
     47 
     48 #include "locators.h"
     49 
     50 
     51 static int smsh_gxio_match(device_t, struct cfdata *, void *);
     52 static void smsh_gxio_attach(device_t, device_t, void *);
     53 
     54 static int ether_serial_digit = 1;
     55 
     56 CFATTACH_DECL_NEW(smsh_gxio, sizeof(struct lan9118_softc),
     57     smsh_gxio_match, smsh_gxio_attach, NULL, NULL);
     58 
     59 
     60 /* ARGSUSED */
     61 static int
     62 smsh_gxio_match(device_t parent, struct cfdata *match, void *aux)
     63 {
     64 	struct gxio_attach_args *gxa = aux;
     65 	bus_space_tag_t iot = gxa->gxa_iot;
     66 	bus_space_handle_t ioh;
     67 	uint32_t val;
     68 	int rv = 0;
     69 
     70 	/* Disallow wildcarded values. */
     71 	if (gxa->gxa_addr == GXIOCF_ADDR_DEFAULT)
     72 		return 0;
     73 	if (gxa->gxa_gpirq == GXIOCF_GPIRQ_DEFAULT)
     74 		return 0;
     75 
     76 	if (bus_space_map(iot, gxa->gxa_addr, LAN9118_IOSIZE, 0, &ioh) != 0)
     77 		return 0;
     78 
     79 	bus_space_write_4(iot, ioh, LAN9118_BYTE_TEST, 0);
     80 	val = bus_space_read_4(iot, ioh, LAN9118_BYTE_TEST);
     81 	if (val == LAN9118_BYTE_TEST_VALUE)
     82 		/* Assume we have an SMSC LAN9117 */
     83 		rv = 1;
     84 	if (ether_serial_digit > 15)
     85 		rv = 0;
     86 
     87 	bus_space_unmap(iot, ioh, LAN9118_IOSIZE);
     88 	return rv;
     89 }
     90 
     91 /* ARGSUSED */
     92 static void
     93 smsh_gxio_attach(device_t parent, device_t self, void *aux)
     94 {
     95 	struct lan9118_softc *sc = device_private(self);
     96 	struct gxio_attach_args *gxa = aux;
     97 	void *ih;
     98 
     99 	KASSERT(system_serial_high != 0 || system_serial_low != 0);
    100 
    101 	sc->sc_dev = self;
    102 
    103 	/* Map i/o space. */
    104 	if (bus_space_map(gxa->gxa_iot, gxa->gxa_addr, LAN9118_IOSIZE, 0,
    105 	    &sc->sc_ioh))
    106 		panic("smsh_gxio_attach: can't map i/o space");
    107 	sc->sc_iot = gxa->gxa_iot;
    108 
    109 	sc->sc_enaddr[0] = ((system_serial_high >> 8) & 0xfe) | 0x02;
    110 	sc->sc_enaddr[1] = system_serial_high;
    111 	sc->sc_enaddr[2] = system_serial_low >> 24;
    112 	sc->sc_enaddr[3] = system_serial_low >> 16;
    113 	sc->sc_enaddr[4] = system_serial_low >> 8;
    114 	sc->sc_enaddr[5] = (system_serial_low & 0xc0) |
    115 	    (1 << 4) | ((ether_serial_digit++) & 0x0f);
    116 	sc->sc_flags = LAN9118_FLAGS_NO_EEPROM;
    117 	if (lan9118_attach(sc) != 0) {
    118 		bus_space_unmap(sc->sc_iot, sc->sc_ioh, LAN9118_IOSIZE);
    119 		return;
    120 	}
    121 
    122 	/* Establish the interrupt handler. */
    123 	ih = gxio_intr_establish(gxa->gxa_sc,
    124 	    gxa->gxa_gpirq, IST_EDGE_FALLING, IPL_NET, lan9118_intr, sc);
    125 	if (ih == NULL) {
    126 		aprint_error_dev(self,
    127 		    "couldn't establish interrupt handler\n");
    128 		bus_space_unmap(sc->sc_iot, sc->sc_ioh, LAN9118_IOSIZE);
    129 		return;
    130 	}
    131 }
    132