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if_sm_isa.c revision 1.13
      1 /*	$NetBSD: if_sm_isa.c,v 1.13 2004/09/14 20:20:48 drochner Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1997 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 of the Numerical Aerospace Simulation Facility,
      9  * NASA Ames Research Center.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *	This product includes software developed by the NetBSD
     22  *	Foundation, Inc. and its contributors.
     23  * 4. Neither the name of The NetBSD Foundation nor the names of its
     24  *    contributors may be used to endorse or promote products derived
     25  *    from this software without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37  * POSSIBILITY OF SUCH DAMAGE.
     38  */
     39 
     40 #include <sys/cdefs.h>
     41 __KERNEL_RCSID(0, "$NetBSD: if_sm_isa.c,v 1.13 2004/09/14 20:20:48 drochner Exp $");
     42 
     43 #include <sys/param.h>
     44 #include <sys/systm.h>
     45 #include <sys/mbuf.h>
     46 #include <sys/socket.h>
     47 #include <sys/ioctl.h>
     48 #include <sys/errno.h>
     49 #include <sys/syslog.h>
     50 #include <sys/select.h>
     51 #include <sys/device.h>
     52 
     53 #include <net/if.h>
     54 #include <net/if_dl.h>
     55 #include <net/if_ether.h>
     56 #include <net/if_media.h>
     57 
     58 #include <machine/intr.h>
     59 #include <machine/bus.h>
     60 
     61 #include <dev/mii/mii.h>
     62 #include <dev/mii/miivar.h>
     63 
     64 #include <dev/ic/smc91cxxreg.h>
     65 #include <dev/ic/smc91cxxvar.h>
     66 
     67 #include <dev/isa/isavar.h>
     68 
     69 int	sm_isa_match __P((struct device *, struct cfdata *, void *));
     70 void	sm_isa_attach __P((struct device *, struct device *, void *));
     71 
     72 struct sm_isa_softc {
     73 	struct	smc91cxx_softc sc_smc;		/* real "smc" softc */
     74 
     75 	/* ISA-specific goo. */
     76 	void	*sc_ih;				/* interrupt cookie */
     77 };
     78 
     79 CFATTACH_DECL(sm_isa, sizeof(struct sm_isa_softc),
     80     sm_isa_match, sm_isa_attach, NULL, NULL);
     81 
     82 int
     83 sm_isa_match(parent, match, aux)
     84 	struct device *parent;
     85 	struct cfdata *match;
     86 	void *aux;
     87 {
     88 	struct isa_attach_args *ia = aux;
     89 	bus_space_tag_t iot = ia->ia_iot;
     90 	bus_space_handle_t ioh;
     91 	u_int16_t tmp;
     92 	int rv = 0;
     93 	extern const char *smc91cxx_idstrs[];
     94 
     95 	if (ia->ia_nio < 1)
     96 		return (0);
     97 	if (ia->ia_nirq < 1)
     98 		return (0);
     99 
    100 	if (ISA_DIRECT_CONFIG(ia))
    101 		return (0);
    102 
    103 	/* Disallow wildcarded values. */
    104 	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
    105 		return (0);
    106 	if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
    107 		return (0);
    108 
    109 	/* Map i/o space. */
    110 	if (bus_space_map(iot, ia->ia_io[0].ir_addr, SMC_IOSIZE, 0, &ioh))
    111 		return (0);
    112 
    113 	/* Check that high byte of BANK_SELECT is what we expect. */
    114 	tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W);
    115 	if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE)
    116 		goto out;
    117 
    118 	/*
    119 	 * Switch to bank 0 and perform the test again.
    120 	 * XXX INVASIVE!
    121 	 */
    122 	bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 0);
    123 	tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W);
    124 	if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE)
    125 		goto out;
    126 
    127 	/*
    128 	 * Switch to bank 1 and check the base address register.
    129 	 * XXX INVASIVE!
    130 	 */
    131 	bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 1);
    132 	tmp = bus_space_read_2(iot, ioh, BASE_ADDR_REG_W);
    133 	if (ia->ia_io[0].ir_addr != ((tmp >> 3) & 0x3e0))
    134 		goto out;
    135 
    136 	/*
    137 	 * Check for a recognized chip id.
    138 	 * XXX INVASIVE!
    139 	 */
    140 	bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 3);
    141 	tmp = bus_space_read_2(iot, ioh, REVISION_REG_W);
    142 	if (smc91cxx_idstrs[RR_ID(tmp)] == NULL)
    143 		goto out;
    144 
    145 	/*
    146 	 * Assume we have an SMC91Cxx.
    147 	 */
    148 	ia->ia_nio = 1;
    149 	ia->ia_io[0].ir_size = SMC_IOSIZE;
    150 
    151 	ia->ia_nirq = 1;
    152 
    153 	ia->ia_niomem = 0;
    154 	ia->ia_ndrq = 0;
    155 
    156 	rv = 1;
    157 
    158  out:
    159 	bus_space_unmap(iot, ioh, SMC_IOSIZE);
    160 	return (rv);
    161 }
    162 
    163 void
    164 sm_isa_attach(parent, self, aux)
    165 	struct device *parent, *self;
    166 	void *aux;
    167 {
    168 	struct sm_isa_softc *isc = (struct sm_isa_softc *)self;
    169 	struct smc91cxx_softc *sc = &isc->sc_smc;
    170 	struct isa_attach_args *ia = aux;
    171 	bus_space_tag_t iot = ia->ia_iot;
    172 	bus_space_handle_t ioh;
    173 
    174 	printf("\n");
    175 
    176 	/* Map i/o space. */
    177 	if (bus_space_map(iot, ia->ia_io[0].ir_addr, SMC_IOSIZE, 0, &ioh))
    178 		panic("sm_isa_attach: can't map i/o space");
    179 
    180 	sc->sc_bst = iot;
    181 	sc->sc_bsh = ioh;
    182 
    183 	/* should always be enabled */
    184 	sc->sc_flags |= SMC_FLAGS_ENABLED;
    185 
    186 	/* XXX Should get Ethernet address from EEPROM!! */
    187 
    188 	/* Perform generic intialization. */
    189 	smc91cxx_attach(sc, NULL);
    190 
    191 	/* Establish the interrupt handler. */
    192 	isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
    193 	    IST_EDGE, IPL_NET, smc91cxx_intr, sc);
    194 	if (isc->sc_ih == NULL)
    195 		printf("%s: couldn't establish interrupt handler\n",
    196 		    sc->sc_dev.dv_xname);
    197 }
    198