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if_smsh_gxio.c revision 1.1.2.3 
      1 /*	$NetBSD: if_smsh_gxio.c,v 1.1.2.3 2010/03/11 15:02:14 yamt 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 1.1.2.3 2010/03/11 15:02:14 yamt 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 struct smsh_gxio_softc {
     57 	struct lan9118_softc sc_smsh;
     58 	void *sc_ih;
     59 
     60 	/*
     61 	 * Board independent DMA stuffs, if uses master DMA.
     62 	 * We use PXA2x0's DMA.
     63 	 */
     64 	struct dmac_xfer *sc_txfer;
     65 	struct dmac_xfer *sc_rxfer;
     66 };
     67 
     68 CFATTACH_DECL_NEW(smsh_gxio, sizeof(struct smsh_gxio_softc),
     69     smsh_gxio_match, smsh_gxio_attach, NULL, NULL);
     70 
     71 
     72 /* ARGSUSED */
     73 static int
     74 smsh_gxio_match(device_t parent, struct cfdata *match, void *aux)
     75 {
     76 	struct gxio_attach_args *gxa = aux;
     77 	bus_space_tag_t iot = gxa->gxa_iot;
     78 	bus_space_handle_t ioh;
     79 	uint32_t val;
     80 	int rv = 0;
     81 
     82 	/* Disallow wildcarded values. */
     83 	if (gxa->gxa_addr == GXIOCF_ADDR_DEFAULT)
     84 		return 0;
     85 	if (gxa->gxa_gpirq == GXIOCF_GPIRQ_DEFAULT)
     86 		return 0;
     87 
     88 	if (bus_space_map(iot, gxa->gxa_addr, LAN9118_IOSIZE, 0, &ioh) != 0)
     89 		return 0;
     90 
     91 	bus_space_write_4(iot, ioh, LAN9118_BYTE_TEST, 0);
     92 	val = bus_space_read_4(iot, ioh, LAN9118_BYTE_TEST);
     93 	if (val == LAN9118_BYTE_TEST_VALUE)
     94 		/* Assume we have an SMSC LAN9117 */
     95 		rv = 1;
     96 	if (ether_serial_digit > 15)
     97 		rv = 0;
     98 
     99 	bus_space_unmap(iot, ioh, LAN9118_IOSIZE);
    100 	return rv;
    101 }
    102 
    103 /* ARGSUSED */
    104 static void
    105 smsh_gxio_attach(device_t parent, device_t self, void *aux)
    106 {
    107 	struct smsh_gxio_softc *gsc = device_private(self);
    108 	struct lan9118_softc *sc = &gsc->sc_smsh;
    109 	struct gxio_attach_args *gxa = aux;
    110 
    111 	KASSERT(system_serial_high != 0 || system_serial_low != 0);
    112 
    113 	sc->sc_dev = self;
    114 
    115 	/* Map i/o space. */
    116 	if (bus_space_map(gxa->gxa_iot, gxa->gxa_addr, LAN9118_IOSIZE, 0,
    117 	    &sc->sc_ioh))
    118 		panic("sms_gxio_attach: can't map i/o space");
    119 	sc->sc_iot = gxa->gxa_iot;
    120 
    121 	sc->sc_enaddr[0] = ((system_serial_high >> 8) & 0xfe) | 0x02;
    122 	sc->sc_enaddr[1] = system_serial_high;
    123 	sc->sc_enaddr[2] = system_serial_low >> 24;
    124 	sc->sc_enaddr[3] = system_serial_low >> 16;
    125 	sc->sc_enaddr[4] = system_serial_low >> 8;
    126 	sc->sc_enaddr[5] = (system_serial_low & 0xc0) |
    127 	    (1 << 4) | ((ether_serial_digit++) & 0x0f);
    128 	sc->sc_flags = LAN9118_FLAGS_NO_EEPROM;
    129 	if (lan9118_attach(sc) != 0) {
    130 		bus_space_unmap(sc->sc_iot, sc->sc_ioh, LAN9118_IOSIZE);
    131 		return;
    132 	}
    133 
    134 	/* Establish the interrupt handler. */
    135 	gsc->sc_ih = gxio_intr_establish(gxa->gxa_sc,
    136 	    gxa->gxa_gpirq, IST_EDGE_FALLING, IPL_NET, lan9118_intr, sc);
    137 	if (gsc->sc_ih == NULL) {
    138 		aprint_error_dev(self,
    139 		    "couldn't establish interrupt handler\n");
    140 		bus_space_unmap(sc->sc_iot, sc->sc_ioh, LAN9118_IOSIZE);
    141 		return;
    142 	}
    143 }
    144