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if_ie_sebuf.c revision 1.9.6.1
      1  1.9.6.1     skrll /*	$NetBSD: if_ie_sebuf.c,v 1.9.6.1 2004/08/03 10:42:03 skrll Exp $	*/
      2      1.1       gwr 
      3      1.1       gwr /*-
      4      1.1       gwr  * Copyright (c) 1996 The NetBSD Foundation, Inc.
      5      1.1       gwr  * All rights reserved.
      6      1.1       gwr  *
      7      1.1       gwr  * This code is derived from software contributed to The NetBSD Foundation
      8      1.1       gwr  * by Gordon W. Ross.
      9      1.1       gwr  *
     10      1.1       gwr  * Redistribution and use in source and binary forms, with or without
     11      1.1       gwr  * modification, are permitted provided that the following conditions
     12      1.1       gwr  * are met:
     13      1.1       gwr  * 1. Redistributions of source code must retain the above copyright
     14      1.1       gwr  *    notice, this list of conditions and the following disclaimer.
     15      1.1       gwr  * 2. Redistributions in binary form must reproduce the above copyright
     16      1.1       gwr  *    notice, this list of conditions and the following disclaimer in the
     17      1.1       gwr  *    documentation and/or other materials provided with the distribution.
     18      1.1       gwr  * 3. All advertising materials mentioning features or use of this software
     19      1.1       gwr  *    must display the following acknowledgement:
     20      1.1       gwr  *        This product includes software developed by the NetBSD
     21      1.1       gwr  *        Foundation, Inc. and its contributors.
     22      1.1       gwr  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23      1.1       gwr  *    contributors may be used to endorse or promote products derived
     24      1.1       gwr  *    from this software without specific prior written permission.
     25      1.1       gwr  *
     26      1.1       gwr  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27      1.1       gwr  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28      1.1       gwr  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29      1.1       gwr  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30      1.1       gwr  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31      1.1       gwr  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32      1.1       gwr  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33      1.1       gwr  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34      1.1       gwr  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35      1.1       gwr  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36      1.1       gwr  * POSSIBILITY OF SUCH DAMAGE.
     37      1.1       gwr  */
     38      1.1       gwr 
     39      1.1       gwr /*
     40      1.1       gwr  * Machine-dependent glue for the Intel Ethernet (ie) driver,
     41      1.1       gwr  * as found on the Sun3/E SCSI/Ethernet board.
     42      1.1       gwr  */
     43  1.9.6.1     skrll 
     44  1.9.6.1     skrll #include <sys/cdefs.h>
     45  1.9.6.1     skrll __KERNEL_RCSID(0, "$NetBSD: if_ie_sebuf.c,v 1.9.6.1 2004/08/03 10:42:03 skrll Exp $");
     46  1.9.6.1     skrll 
     47      1.5  jonathan #include "opt_inet.h"
     48      1.1       gwr 
     49      1.1       gwr #include <sys/param.h>
     50      1.1       gwr #include <sys/systm.h>
     51      1.1       gwr #include <sys/device.h>
     52      1.1       gwr #include <sys/protosw.h>
     53      1.1       gwr #include <sys/socket.h>
     54      1.1       gwr #include <net/if.h>
     55      1.1       gwr #include <net/if_ether.h>
     56      1.1       gwr 
     57      1.1       gwr #ifdef INET
     58      1.1       gwr #include <netinet/in.h>
     59      1.1       gwr #include <netinet/in_systm.h>
     60      1.1       gwr #include <netinet/in_var.h>
     61      1.1       gwr #include <netinet/ip.h>
     62      1.1       gwr #include <netinet/if_inarp.h>
     63      1.1       gwr #endif
     64      1.1       gwr 
     65      1.1       gwr #include <machine/autoconf.h>
     66      1.1       gwr #include <machine/cpu.h>
     67      1.1       gwr #include <machine/dvma.h>
     68      1.1       gwr #include <machine/idprom.h>
     69      1.1       gwr #include <machine/vmparam.h>
     70      1.1       gwr 
     71      1.1       gwr #include "i82586.h"
     72      1.1       gwr #include "if_iereg.h"
     73      1.1       gwr #include "if_ievar.h"
     74      1.1       gwr #include "sereg.h"
     75      1.1       gwr #include "sevar.h"
     76      1.1       gwr 
     77      1.1       gwr static void ie_sebuf_reset __P((struct ie_softc *));
     78      1.1       gwr static void ie_sebuf_attend __P((struct ie_softc *));
     79      1.1       gwr static void ie_sebuf_run __P((struct ie_softc *));
     80      1.1       gwr 
     81      1.1       gwr /*
     82      1.4       gwr  * zero/copy functions: OBIO can use the normal functions, but VME
     83      1.4       gwr  *    must do only byte or half-word (16 bit) accesses...
     84      1.4       gwr  */
     85      1.6   thorpej static void *wmemcpy __P((void *dst, const void *src, size_t size));
     86      1.6   thorpej static void *wmemset __P((void *dst, int val, size_t size));
     87      1.4       gwr 
     88      1.4       gwr 
     89      1.4       gwr /*
     90      1.1       gwr  * New-style autoconfig attachment
     91      1.1       gwr  */
     92      1.1       gwr 
     93      1.1       gwr static int  ie_sebuf_match __P((struct device *, struct cfdata *, void *));
     94      1.1       gwr static void ie_sebuf_attach __P((struct device *, struct device *, void *));
     95      1.1       gwr 
     96      1.8   thorpej CFATTACH_DECL(ie_sebuf, sizeof(struct ie_softc),
     97      1.9   thorpej     ie_sebuf_match, ie_sebuf_attach, NULL, NULL);
     98      1.1       gwr 
     99      1.1       gwr static int
    100      1.1       gwr ie_sebuf_match(parent, cf, args)
    101      1.1       gwr 	struct device *parent;
    102      1.1       gwr 	struct cfdata *cf;
    103      1.1       gwr 	void *args;
    104      1.1       gwr {
    105      1.1       gwr 	struct sebuf_attach_args *aa = args;
    106      1.1       gwr 
    107      1.1       gwr 	/* Match by name. */
    108      1.1       gwr 	if (strcmp(aa->name, "ie"))
    109      1.1       gwr 		return (0);
    110      1.1       gwr 
    111      1.2       gwr 	/* Anyting else to check? */
    112      1.1       gwr 
    113      1.1       gwr 	return (1);
    114      1.1       gwr }
    115      1.1       gwr 
    116      1.1       gwr static void
    117      1.1       gwr ie_sebuf_attach(parent, self, args)
    118      1.1       gwr 	struct device *parent;
    119      1.1       gwr 	struct device *self;
    120      1.1       gwr 	void *args;
    121      1.1       gwr {
    122      1.1       gwr 	struct ie_softc *sc = (void *) self;
    123      1.1       gwr 	struct sebuf_attach_args *aa = args;
    124      1.1       gwr 	volatile struct ie_regs *regs;
    125      1.1       gwr 	int     off;
    126      1.1       gwr 
    127      1.1       gwr 	sc->hard_type = IE_VME3E;
    128      1.1       gwr 	sc->reset_586 = ie_sebuf_reset;
    129      1.1       gwr 	sc->chan_attn = ie_sebuf_attend;
    130      1.1       gwr 	sc->run_586   = ie_sebuf_run;
    131      1.6   thorpej 	sc->sc_memcpy = wmemcpy;
    132      1.6   thorpej 	sc->sc_memset = wmemset;
    133      1.4       gwr 
    134      1.4       gwr 	/* Control regs mapped by parent. */
    135      1.4       gwr 	sc->sc_reg = aa->regs;
    136      1.4       gwr 	regs = (struct ie_regs *) sc->sc_reg;
    137      1.4       gwr 
    138      1.4       gwr 	/*
    139      1.4       gwr 	 * On this hardware, the i82586 address zero
    140      1.4       gwr 	 * maps to the start of the board, which we
    141      1.4       gwr 	 * happen to know is 128K below (XXX).
    142      1.4       gwr 	 */
    143      1.4       gwr 	sc->sc_iobase = aa->buf - 0x20000;
    144      1.1       gwr 
    145      1.1       gwr 	/*
    146      1.3       gwr 	 * There is 128K of memory for the i82586 on
    147      1.3       gwr 	 * the Sun3/E SCSI/Ethernet board, and the
    148      1.3       gwr 	 * "sebuf" driver has mapped it in for us.
    149      1.3       gwr 	 * (Fixed in hardware; NOT configurable!)
    150      1.1       gwr 	 */
    151      1.3       gwr 	if (aa->blen < SE_IEBUFSIZE)
    152      1.3       gwr 		panic("ie_sebuf: bad size");
    153      1.3       gwr 	sc->sc_msize = SE_IEBUFSIZE;
    154      1.1       gwr 	sc->sc_maddr = aa->buf;
    155      1.4       gwr 
    156      1.4       gwr 	/* Clear the memory. */
    157      1.6   thorpej 	(sc->sc_memset)(sc->sc_maddr, 0, sc->sc_msize);
    158      1.1       gwr 
    159      1.3       gwr 	/*
    160      1.4       gwr 	 * XXX:  Unfortunately, the common driver code
    161      1.4       gwr 	 * is not ready to deal with more than 64K of
    162      1.4       gwr 	 * memory, so skip the first 64K.  Too bad.
    163      1.4       gwr 	 * Note: device needs the SCP at the end.
    164      1.3       gwr 	 */
    165      1.4       gwr 	sc->sc_msize -= 0x10000;
    166      1.4       gwr 	sc->sc_maddr += 0x10000;
    167      1.1       gwr 
    168      1.1       gwr 	/*
    169      1.1       gwr 	 * Set the System Configuration Pointer (SCP).
    170      1.1       gwr 	 * Its location is system-dependent because the
    171      1.1       gwr 	 * i82586 reads it from a fixed physical address.
    172      1.1       gwr 	 * On this hardware, the i82586 address is just
    173      1.3       gwr 	 * masked down to 17 bits, so the SCP is found
    174      1.1       gwr 	 * at the end of the RAM on the VME board.
    175      1.1       gwr 	 */
    176      1.4       gwr 	off = IE_SCP_ADDR & 0xFFFF;
    177      1.4       gwr 	sc->scp = (volatile void *) (sc->sc_maddr + off);
    178      1.1       gwr 
    179      1.1       gwr 	/*
    180      1.1       gwr 	 * The rest of ram is used for buffers, etc.
    181      1.1       gwr 	 */
    182      1.3       gwr 	sc->buf_area = sc->sc_maddr;
    183      1.3       gwr 	sc->buf_area_sz = off;
    184      1.1       gwr 
    185      1.1       gwr 	/* Install interrupt handler. */
    186      1.1       gwr 	regs->ie_ivec = aa->ca.ca_intvec;
    187      1.1       gwr 	isr_add_vectored(ie_intr, (void *)sc,
    188      1.1       gwr 		aa->ca.ca_intpri, aa->ca.ca_intvec);
    189      1.1       gwr 
    190      1.4       gwr 	/* Set the ethernet address. */
    191      1.4       gwr 	idprom_etheraddr(sc->sc_addr);
    192      1.4       gwr 
    193      1.1       gwr 	/* Do machine-independent parts of attach. */
    194      1.1       gwr 	ie_attach(sc);
    195      1.1       gwr 
    196      1.1       gwr }
    197      1.1       gwr 
    198      1.4       gwr /* Whack the "channel attetion" line. */
    199      1.4       gwr void
    200      1.4       gwr ie_sebuf_attend(sc)
    201      1.4       gwr 	struct ie_softc *sc;
    202      1.4       gwr {
    203      1.4       gwr 	volatile struct ie_regs *regs = (struct ie_regs *) sc->sc_reg;
    204      1.4       gwr 
    205      1.4       gwr 	regs->ie_csr |= IE_CSR_ATTEN;	/* flag! */
    206      1.4       gwr 	regs->ie_csr &= ~IE_CSR_ATTEN;	/* down. */
    207      1.4       gwr }
    208      1.1       gwr 
    209      1.1       gwr /*
    210      1.4       gwr  * This is called during driver attach.
    211      1.4       gwr  * Reset and initialize.
    212      1.1       gwr  */
    213      1.1       gwr void
    214      1.1       gwr ie_sebuf_reset(sc)
    215      1.1       gwr 	struct ie_softc *sc;
    216      1.1       gwr {
    217      1.1       gwr 	volatile struct ie_regs *regs = (struct ie_regs *) sc->sc_reg;
    218      1.1       gwr 	regs->ie_csr = IE_CSR_RESET;
    219      1.4       gwr 	delay(20);
    220      1.4       gwr 	regs->ie_csr = (IE_CSR_NOLOOP | IE_CSR_IENAB);
    221      1.1       gwr }
    222      1.1       gwr 
    223      1.4       gwr /*
    224      1.4       gwr  * This is called at the end of ieinit().
    225      1.4       gwr  * optional.
    226      1.4       gwr  */
    227      1.4       gwr void
    228      1.4       gwr ie_sebuf_run(sc)
    229      1.1       gwr 	struct ie_softc *sc;
    230      1.1       gwr {
    231      1.4       gwr 	/* do it all in reset */
    232      1.4       gwr }
    233      1.4       gwr 
    234      1.4       gwr /*
    235      1.6   thorpej  * wmemcpy/wmemset - like memcpy/memset but largest access is 16-bits,
    236      1.4       gwr  * and also does byte swaps...
    237      1.4       gwr  * XXX - Would be nice to have asm versions in some library...
    238      1.4       gwr  */
    239      1.1       gwr 
    240      1.6   thorpej static void *
    241      1.6   thorpej wmemset(vb, val, l)
    242      1.4       gwr 	void *vb;
    243      1.6   thorpej 	int val;
    244      1.6   thorpej 	size_t l;
    245      1.4       gwr {
    246      1.4       gwr 	u_char *b = vb;
    247      1.4       gwr 	u_char *be = b + l;
    248      1.4       gwr 	u_short *sp;
    249      1.4       gwr 
    250      1.4       gwr 	if (l == 0)
    251      1.6   thorpej 		return (vb);
    252      1.4       gwr 
    253      1.4       gwr 	/* front, */
    254      1.4       gwr 	if ((u_long)b & 1)
    255      1.6   thorpej 		*b++ = val;
    256      1.4       gwr 
    257      1.4       gwr 	/* back, */
    258      1.4       gwr 	if (b != be && ((u_long)be & 1) != 0) {
    259      1.4       gwr 		be--;
    260      1.6   thorpej 		*be = val;
    261      1.4       gwr 	}
    262      1.4       gwr 
    263      1.4       gwr 	/* and middle. */
    264      1.4       gwr 	sp = (u_short *)b;
    265      1.4       gwr 	while (sp != (u_short *)be)
    266      1.6   thorpej 		*sp++ = val;
    267      1.6   thorpej 
    268      1.6   thorpej 	return (vb);
    269      1.1       gwr }
    270      1.1       gwr 
    271      1.6   thorpej static void *
    272      1.6   thorpej wmemcpy(dst, src, l)
    273      1.6   thorpej 	void *dst;
    274      1.6   thorpej 	const void *src;
    275      1.6   thorpej 	size_t l;
    276      1.1       gwr {
    277      1.6   thorpej 	const u_char *b1e, *b1 = src;
    278      1.6   thorpej 	u_char *b2 = dst;
    279      1.4       gwr 	u_short *sp;
    280      1.4       gwr 	int bstore = 0;
    281      1.4       gwr 
    282      1.4       gwr 	if (l == 0)
    283      1.6   thorpej 		return (dst);
    284      1.4       gwr 
    285      1.4       gwr 	/* front, */
    286      1.4       gwr 	if ((u_long)b1 & 1) {
    287      1.4       gwr 		*b2++ = *b1++;
    288      1.4       gwr 		l--;
    289      1.4       gwr 	}
    290      1.4       gwr 
    291      1.4       gwr 	/* middle, */
    292      1.4       gwr 	sp = (u_short *)b1;
    293      1.4       gwr 	b1e = b1 + l;
    294      1.4       gwr 	if (l & 1)
    295      1.4       gwr 		b1e--;
    296      1.4       gwr 	bstore = (u_long)b2 & 1;
    297      1.4       gwr 
    298      1.4       gwr 	while (sp < (u_short *)b1e) {
    299      1.4       gwr 		if (bstore) {
    300      1.4       gwr 			b2[1] = *sp & 0xff;
    301      1.4       gwr 			b2[0] = *sp >> 8;
    302      1.4       gwr 		} else
    303      1.4       gwr 			*((short *)b2) = *sp;
    304      1.4       gwr 		sp++;
    305      1.4       gwr 		b2 += 2;
    306      1.4       gwr 	}
    307      1.4       gwr 
    308      1.4       gwr 	/* and back. */
    309      1.4       gwr 	if (l & 1)
    310      1.4       gwr 		*b2 = *b1e;
    311      1.6   thorpej 
    312      1.6   thorpej 	return (dst);
    313      1.1       gwr }
    314