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      1 /*      $NetBSD: if_ze.c,v 1.18 2017/05/22 17:02:41 ragge Exp $ */
      2 /*
      3  * Copyright (c) 1999 Ludd, University of Lule}, Sweden. All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include <sys/cdefs.h>
     27 __KERNEL_RCSID(0, "$NetBSD: if_ze.c,v 1.18 2017/05/22 17:02:41 ragge Exp $");
     28 
     29 #include "opt_cputype.h"
     30 
     31 #include <sys/param.h>
     32 #include <sys/systm.h>
     33 #include <sys/bus.h>
     34 #include <sys/cpu.h>
     35 #include <sys/device.h>
     36 
     37 #include <net/if.h>
     38 #include <net/if_ether.h>
     39 #include <net/if_dl.h>
     40 
     41 #include <netinet/in.h>
     42 #include <netinet/if_inarp.h>
     43 
     44 #include <machine/nexus.h>
     45 #include <machine/scb.h>
     46 #include <machine/sid.h>
     47 #include <machine/mainbus.h>
     48 
     49 #include <dev/ic/sgecreg.h>
     50 #include <dev/ic/sgecvar.h>
     51 
     52 #include "ioconf.h"
     53 
     54 /*
     55  * Addresses.
     56  */
     57 #define SGECADDR        0x20008000
     58 #define NISA_ROM        0x20084000
     59 #define NISA_ROM_VXT    0x200c4000
     60 #define	NISA_ROM_VSBUS	0x27800000
     61 #define	SGECVEC		0x108
     62 
     63 static int	ze_mainbus_match(device_t, cfdata_t, void *);
     64 static void	ze_mainbus_attach(device_t, device_t, void *);
     65 
     66 static const struct sgec_data {
     67 	uint32_t sd_boardtype;
     68 	bus_addr_t sd_addr;
     69 	bus_addr_t sd_rom;
     70 	uint16_t sd_intvec;
     71 	uint8_t sd_romshift;
     72 } sgec_data[] = {
     73 	{ VAX_BTYP_660, SGECADDR, NISA_ROM, SGECVEC, 24, },
     74 #if VXT2000 || VAXANY
     75 	{ VAX_BTYP_VXT, SGECADDR, NISA_ROM_VXT, 0x200, 0, },
     76 #endif
     77 	{ VAX_BTYP_670, SGECADDR, NISA_ROM, SGECVEC, 8, },
     78 	{ VAX_BTYP_680, SGECADDR, NISA_ROM, SGECVEC, 8, },
     79 	{ VAX_BTYP_681, SGECADDR, NISA_ROM, SGECVEC, 8, },
     80 	{ VAX_BTYP_48, SGECADDR, NISA_ROM_VSBUS, SGECVEC, 0, },
     81 	{ VAX_BTYP_49, SGECADDR, NISA_ROM_VSBUS, SGECVEC, 0, },
     82 	{ VAX_BTYP_53, SGECADDR, NISA_ROM, SGECVEC, 8, },
     83 };
     84 
     85 static const struct sgec_data *
     86 ze_find(void)
     87 {
     88 	size_t i;
     89 	const struct sgec_data *sd;
     90 	for (i = 0, sd = sgec_data; i < __arraycount(sgec_data); i++, sd++) {
     91 		if (vax_boardtype == sd->sd_boardtype)
     92 			return sd;
     93 	}
     94 
     95 	return NULL;
     96 }
     97 
     98 CFATTACH_DECL_NEW(ze_mainbus, sizeof(struct ze_softc),
     99     ze_mainbus_match, ze_mainbus_attach, NULL, NULL);
    100 
    101 /*
    102  * Check for present SGEC.
    103  */
    104 int
    105 ze_mainbus_match(device_t parent, cfdata_t cf, void *aux)
    106 {
    107 	struct mainbus_attach_args * const ma = aux;
    108 
    109 	/*
    110 	 * Should some more intelligent checking be done???
    111 	 */
    112 	if (strcmp(ma->ma_type, "sgec"))
    113 		return 0;
    114 
    115 	return ze_find() != NULL;
    116 }
    117 
    118 /*
    119  * Interface exists: make available by filling in network interface
    120  * record.  System will initialize the interface when it is ready
    121  * to accept packets.
    122  */
    123 void
    124 ze_mainbus_attach(device_t parent, device_t self, void *aux)
    125 {
    126 	struct mainbus_attach_args * const ma = aux;
    127 	struct ze_softc * const sc = device_private(self);
    128 	const struct sgec_data * const sd = ze_find();
    129 	const uint32_t *ea;
    130 	size_t i;
    131 	int error;
    132 
    133 	sc->sc_dev = self;
    134 
    135 	/*
    136 	 * Map in SGEC registers.
    137 	 */
    138 	sc->sc_dmat = ma->ma_dmat;
    139 	sc->sc_iot = ma->ma_iot;
    140 	sc->sc_intvec = sd->sd_intvec;
    141 	error = bus_space_map(sc->sc_iot, sd->sd_addr, PAGE_SIZE, 0,
    142 	    &sc->sc_ioh);
    143 	if (error) {
    144 		aprint_error(": failed to map %#lx: %d\n", sd->sd_addr, error);
    145 		return;
    146 	}
    147 
    148 	/*
    149 	 * Map in, read and release ethernet rom address.
    150 	 */
    151 	ea = (uint32_t *)vax_map_physmem(sd->sd_rom, 1);
    152 	for (i = 0; i < ETHER_ADDR_LEN; i++)
    153 		sc->sc_enaddr[i] = (ea[i] >> sd->sd_romshift) & 0377;
    154 	vax_unmap_physmem((vaddr_t)ea, 1);
    155 
    156 	scb_vecalloc(sc->sc_intvec, (void (*)(void *)) sgec_intr, sc,
    157 	    SCB_ISTACK, &sc->sc_intrcnt);
    158 
    159 	sgec_attach(sc);
    160 }
    161