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      1 /*	$NetBSD: if_sn_jazzio.c,v 1.16 2023/12/20 06:36:02 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 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.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /*
     33  * Microsoft JAZZ front-end for the National Semiconductor DP83932
     34  * Systems-Oriented Network Interface Controller (SONIC).
     35  */
     36 
     37 #include <sys/cdefs.h>
     38 __KERNEL_RCSID(0, "$NetBSD: if_sn_jazzio.c,v 1.16 2023/12/20 06:36:02 thorpej Exp $");
     39 
     40 #include <sys/param.h>
     41 #include <sys/systm.h>
     42 #include <sys/mbuf.h>
     43 #include <sys/kernel.h>
     44 #include <sys/socket.h>
     45 #include <sys/ioctl.h>
     46 #include <sys/errno.h>
     47 #include <sys/device.h>
     48 #include <sys/kcore.h>
     49 
     50 #include <sys/rndsource.h>
     51 
     52 #include <net/if.h>
     53 #include <net/if_dl.h>
     54 #include <net/if_ether.h>
     55 
     56 #include <machine/autoconf.h>
     57 #include <sys/bus.h>
     58 #include <machine/intr.h>
     59 
     60 #include <dev/ic/dp83932reg.h>
     61 #include <dev/ic/dp83932var.h>
     62 
     63 #include <arc/arc/arcbios.h>
     64 #include <arc/jazz/jazziovar.h>
     65 
     66 int	sonic_jazzio_match(device_t, cfdata_t, void *);
     67 void	sonic_jazzio_attach(device_t, device_t, void *);
     68 
     69 CFATTACH_DECL_NEW(sn_jazzio, sizeof(struct sonic_softc),
     70     sonic_jazzio_match, sonic_jazzio_attach, NULL, NULL);
     71 
     72 int
     73 sonic_jazzio_match(device_t parent, cfdata_t cf, void *aux)
     74 {
     75 	struct jazzio_attach_args *ja = aux;
     76 
     77 	if (strcmp(ja->ja_name, "SONIC") != 0)
     78 		return 0;
     79 
     80 	return 1;
     81 }
     82 
     83 void
     84 sonic_jazzio_attach(device_t parent, device_t self, void *aux)
     85 {
     86 	struct sonic_softc *sc = device_private(self);
     87 	struct jazzio_attach_args *ja = aux;
     88 	int i;
     89 	uint8_t enaddr[ETHER_ADDR_LEN];
     90 
     91 	sc->sc_dev = self;
     92 	sc->sc_st = ja->ja_bust;
     93 	sc->sc_dmat = ja->ja_dmat;
     94 
     95 	aprint_normal(": SONIC Ethernet\n");
     96 
     97 	/* Map the device. */
     98 	if (bus_space_map(sc->sc_st, ja->ja_addr, SONIC_NREGS * 4,
     99 	    0, &sc->sc_sh) != 0) {
    100 		aprint_error_dev(sc->sc_dev, "unable to map SONIC registers\n");
    101 		return;
    102 	}
    103 
    104 	/* We run in 32-bit mode. */
    105 	sc->sc_32bit = 1;
    106 
    107 	/* BMODE is set for little-endian. */
    108 	sc->sc_bigendian = 0;
    109 
    110 	/* Regs are 16-bit, plus 16-bit pad. */
    111 	for (i = 0; i < SONIC_NREGS; i++)
    112 		sc->sc_regmap[i] = i * 4;
    113 
    114 	/*
    115 	 * Configure DCR:
    116 	 *
    117 	 *	- Latched bug retry
    118 	 *	- Synchronous bus (memory cycle 2 clocks)
    119 	 *	- 0 wait states added (WC0,WC1 == 0,0)
    120 	 *	- 4 byte Rx DMA threshold (RFT0,RFT1 == 0,0)
    121 	 *	- 28 byte Tx DMA threshold (TFT0,TFT1 == 1,1)
    122 	 *	  XXX There was a comment
    123 	 *	  	"XXX RFT & TFT according to MIPS manual"
    124 	 *	      in old MD sys/arch/arc/dev/if_sn.c in Attic.
    125 	 */
    126 	sc->sc_dcr = DCR_LBR | DCR_SBUS | DCR_TFT0 | DCR_TFT1;
    127 	sc->sc_dcr2 = 0;
    128 
    129 	/* Hook up our interrupt handler. */
    130 	jazzio_intr_establish(ja->ja_intr, sonic_intr, sc);
    131 
    132 	/* The Ethernet address is from the product ID. */
    133 	memcpy(enaddr, arc_product_id, sizeof(enaddr));
    134 
    135 	/* Finish off the attach. */
    136 	sonic_attach(sc, enaddr);
    137 }
    138