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if_sn_ap.c revision 1.12 
      1 /*	$NetBSD: if_sn_ap.c,v 1.12 2018/09/30 14:23:24 tsutsui Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 1997 Allen Briggs
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed by Allen Briggs
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: if_sn_ap.c,v 1.12 2018/09/30 14:23:24 tsutsui Exp $");
     35 
     36 #include "opt_inet.h"
     37 
     38 #include <sys/param.h>
     39 #include <sys/device.h>
     40 #include <sys/errno.h>
     41 #include <sys/ioctl.h>
     42 #include <sys/socket.h>
     43 #include <sys/syslog.h>
     44 #include <sys/systm.h>
     45 
     46 #include <net/if.h>
     47 #include <net/if_ether.h>
     48 
     49 #include <machine/cpu.h>
     50 #include <machine/adrsmap.h>
     51 
     52 #include <newsmips/apbus/apbusvar.h>
     53 #include <newsmips/apbus/if_snreg.h>
     54 #include <newsmips/apbus/if_snvar.h>
     55 
     56 #define SONIC_MACROM_OFFSET	0x40
     57 
     58 #define SONIC_APBUS_REG_OFFSET	0x00010000
     59 #define SONIC_APBUS_MEM_OFFSET	0x00020000
     60 #define SONIC_APBUS_CTL_OFFSET	(-0x00100000)
     61 
     62 static int	sn_ap_match(device_t, cfdata_t, void *);
     63 static void	sn_ap_attach(device_t, device_t, void *);
     64 static int	sn_ap_getaddr(struct sn_softc *, uint8_t *);
     65 
     66 CFATTACH_DECL_NEW(sn_ap, sizeof(struct sn_softc),
     67     sn_ap_match, sn_ap_attach, NULL, NULL);
     68 
     69 static int
     70 sn_ap_match(device_t parent, cfdata_t cf, void *aux)
     71 {
     72 	struct apbus_attach_args *apa = aux;
     73 
     74 	if (strcmp(apa->apa_name, "sonic") != 0)
     75 		return 0;
     76 
     77 	return 1;
     78 }
     79 
     80 /*
     81  * Install interface into kernel networking data structures
     82  */
     83 static void
     84 sn_ap_attach(device_t parent, device_t self, void *aux)
     85 {
     86 	struct sn_softc *sc = device_private(self);
     87 	struct apbus_attach_args *apa = aux;
     88 	uint8_t myaddr[ETHER_ADDR_LEN];
     89 	u_int intrmask;
     90 
     91 	sc->sc_dev = self;
     92 	sc->sc_hwbase = (void *)apa->apa_hwbase;
     93 	sc->sc_regbase = (void *)(apa->apa_hwbase + SONIC_APBUS_REG_OFFSET);
     94 	sc->space = (void *)(apa->apa_hwbase + SONIC_APBUS_MEM_OFFSET);
     95 
     96 	aprint_normal(" slot%d addr 0x%lx", apa->apa_slotno, apa->apa_hwbase);
     97 
     98 	sc->snr_dcr = DCR_WAIT0 | DCR_DMABLOCK | DCR_RFT16 | DCR_TFT16;
     99 	sc->snr_dcr2 = 0;
    100 	sc->snr_dcr |= DCR_EXBUS;
    101 	sc->bitmode = 1;
    102 
    103 	if (sn_ap_getaddr(sc, myaddr)) {
    104 		aprint_error(": failed to get MAC address\n");
    105 		return;
    106 	}
    107 
    108 	aprint_normal("\n");
    109 
    110 	/* snsetup returns 1 if something fails */
    111 	if (snsetup(sc, myaddr))
    112 		return;
    113 
    114 	intrmask = (apa->apa_slotno == 0) ?
    115 	    NEWS5000_INT0_SONIC : SLOTTOMASK(apa->apa_slotno);
    116 
    117 	apbus_intr_establish(0, /* interrupt level (0 or 1) */
    118 	    intrmask,
    119 	    0, /* priority */
    120 	    snintr, sc, device_xname(self), apa->apa_ctlnum);
    121 }
    122 
    123 int
    124 sn_ap_getaddr(struct sn_softc *sc, uint8_t *lladdr)
    125 {
    126 	uint32_t *p;
    127 	int i;
    128 
    129 	p = (uint32_t *)((uint8_t *)sc->sc_hwbase + SONIC_MACROM_OFFSET);
    130 	for (i = 0; i < ETHER_ADDR_LEN; i++) {
    131 		int h = *p++ & 0x0f;
    132 		int l = *p++ & 0x0f;
    133 		*lladdr++ = (h << 4) + l;
    134 	}
    135 
    136 	return 0;
    137 }
    138 
    139 #define APSONIC_INT_MASK	0x00007f00	/* XXX */
    140 #define	APSONIC_INT_REG(base)	(((u_long)(base) & 0xffc00000) | 0x00100000)
    141 
    142 void
    143 sn_md_init(struct sn_softc *sc)
    144 {
    145 	volatile uint32_t *reg = (uint32_t *)APSONIC_INT_REG(sc->sc_hwbase);
    146 
    147 	*reg = APSONIC_INT_MASK;
    148 	wbflush();
    149 	apbus_wbflush();
    150 	delay(10000);
    151 }
    152