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if_le.c revision 1.5.6.4
      1  1.5.6.4    skrll /*	$NetBSD: if_le.c,v 1.5.6.4 2004/12/18 09:31:15 skrll Exp $	*/
      2      1.1      wdk 
      3      1.1      wdk /*-
      4      1.1      wdk  * Copyright (c) 1996, 2000 The NetBSD Foundation, Inc.
      5      1.1      wdk  * All rights reserved.
      6      1.1      wdk  *
      7      1.1      wdk  * This code is derived from software contributed to The NetBSD Foundation
      8      1.1      wdk  * by Adam Glass, Gordon W. Ross and Wayne Knowles
      9      1.1      wdk  *
     10      1.1      wdk  * Redistribution and use in source and binary forms, with or without
     11      1.1      wdk  * modification, are permitted provided that the following conditions
     12      1.1      wdk  * are met:
     13      1.1      wdk  * 1. Redistributions of source code must retain the above copyright
     14      1.1      wdk  *    notice, this list of conditions and the following disclaimer.
     15      1.1      wdk  * 2. Redistributions in binary form must reproduce the above copyright
     16      1.1      wdk  *    notice, this list of conditions and the following disclaimer in the
     17      1.1      wdk  *    documentation and/or other materials provided with the distribution.
     18      1.1      wdk  * 3. All advertising materials mentioning features or use of this software
     19      1.1      wdk  *    must display the following acknowledgement:
     20      1.1      wdk  *        This product includes software developed by the NetBSD
     21      1.1      wdk  *        Foundation, Inc. and its contributors.
     22      1.1      wdk  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23      1.1      wdk  *    contributors may be used to endorse or promote products derived
     24      1.1      wdk  *    from this software without specific prior written permission.
     25      1.1      wdk  *
     26      1.1      wdk  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27      1.1      wdk  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28      1.1      wdk  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29      1.1      wdk  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30      1.1      wdk  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31      1.1      wdk  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32      1.1      wdk  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33      1.1      wdk  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34      1.1      wdk  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35      1.1      wdk  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36      1.1      wdk  * POSSIBILITY OF SUCH DAMAGE.
     37      1.1      wdk  */
     38      1.1      wdk 
     39  1.5.6.1    skrll #include <sys/cdefs.h>
     40  1.5.6.4    skrll __KERNEL_RCSID(0, "$NetBSD: if_le.c,v 1.5.6.4 2004/12/18 09:31:15 skrll Exp $");
     41  1.5.6.1    skrll 
     42      1.1      wdk #include "opt_inet.h"
     43      1.1      wdk #include "bpfilter.h"
     44      1.1      wdk 
     45      1.1      wdk #include <sys/param.h>
     46      1.1      wdk #include <sys/systm.h>
     47      1.1      wdk #include <sys/mbuf.h>
     48      1.1      wdk #include <sys/syslog.h>
     49      1.1      wdk #include <sys/socket.h>
     50      1.1      wdk #include <sys/device.h>
     51      1.1      wdk 
     52      1.1      wdk #include <net/if.h>
     53      1.1      wdk #include <net/if_ether.h>
     54      1.1      wdk #include <net/if_media.h>
     55      1.1      wdk 
     56      1.1      wdk #ifdef INET
     57      1.1      wdk #include <netinet/in.h>
     58      1.1      wdk #include <netinet/if_inarp.h>
     59      1.1      wdk #endif
     60      1.1      wdk 
     61      1.1      wdk #include <machine/cpu.h>
     62      1.1      wdk #include <machine/mainboard.h>
     63      1.1      wdk #include <machine/autoconf.h>
     64      1.1      wdk #include <machine/bus.h>
     65      1.1      wdk 
     66      1.1      wdk #include <dev/ic/lancereg.h>
     67      1.1      wdk #include <dev/ic/lancevar.h>
     68      1.1      wdk #include <dev/ic/am7990reg.h>
     69      1.1      wdk #include <dev/ic/am7990var.h>
     70      1.1      wdk 
     71      1.1      wdk /*
     72      1.1      wdk  * LANCE registers.
     73      1.1      wdk  */
     74      1.1      wdk 
     75      1.1      wdk #define	LEREG1_RDP	2	/* Offset to LANCE data register */
     76      1.1      wdk #define	LEREG1_RAP	6	/* Offset to LANCE address register */
     77      1.1      wdk 
     78      1.1      wdk /*
     79      1.1      wdk  * Ethernet software status per interface.
     80      1.1      wdk  * The real stuff is in dev/ic/am7990var.h
     81      1.1      wdk  */
     82      1.1      wdk struct	le_softc {
     83      1.1      wdk 	struct am7990_softc	sc_am7990;	/* glue to MI code */
     84      1.1      wdk 	bus_space_tag_t		sc_bustag;
     85      1.1      wdk 	bus_dma_tag_t		sc_dmatag;
     86      1.1      wdk 	bus_space_handle_t	sc_reg;		/* LANCE registers */
     87      1.1      wdk         bus_dmamap_t		sc_dmamap;
     88      1.1      wdk 	struct evcnt		sc_intrcnt;	/* Interrupt event counter */
     89      1.1      wdk };
     90      1.1      wdk 
     91      1.1      wdk static int	le_match __P((struct device *, struct cfdata *, void *));
     92      1.1      wdk static void	le_attach __P((struct device *, struct device *, void *));
     93      1.1      wdk 
     94      1.5  thorpej CFATTACH_DECL(le, sizeof(struct le_softc),
     95      1.5  thorpej     le_match, le_attach, NULL, NULL);
     96      1.1      wdk 
     97  1.5.6.4    skrll static int le_attached;
     98  1.5.6.4    skrll 
     99      1.3      mrg #if defined(_KERNEL_OPT)
    100      1.1      wdk #include "opt_ddb.h"
    101      1.1      wdk #endif
    102      1.1      wdk 
    103      1.1      wdk #ifdef DDB
    104      1.1      wdk #define	integrate
    105      1.1      wdk #define hide
    106      1.1      wdk #else
    107      1.1      wdk #define	integrate	static __inline
    108      1.1      wdk #define hide		static
    109      1.1      wdk #endif
    110      1.1      wdk 
    111      1.2      wdk int le_intr  __P((void *));
    112      1.2      wdk 
    113      1.1      wdk hide void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t));
    114      1.1      wdk hide u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t));
    115      1.1      wdk 
    116      1.1      wdk hide void
    117      1.1      wdk lewrcsr(sc, port, val)
    118      1.1      wdk 	struct lance_softc *sc;
    119      1.1      wdk 	u_int16_t port, val;
    120      1.1      wdk {
    121      1.1      wdk 	struct le_softc *lesc = (struct le_softc *)sc;
    122      1.1      wdk 
    123      1.1      wdk 	bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port);
    124      1.1      wdk 	bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val);
    125      1.1      wdk }
    126      1.1      wdk 
    127      1.1      wdk hide u_int16_t
    128      1.1      wdk lerdcsr(sc, port)
    129      1.1      wdk 	struct lance_softc *sc;
    130      1.1      wdk 	u_int16_t port;
    131      1.1      wdk {
    132      1.1      wdk 	struct le_softc *lesc = (struct le_softc *)sc;
    133      1.1      wdk 
    134      1.1      wdk 	bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port);
    135      1.1      wdk 	return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP));
    136      1.1      wdk }
    137      1.1      wdk 
    138      1.1      wdk int
    139      1.1      wdk le_match(parent, cf, aux)
    140      1.1      wdk 	struct device *parent;
    141      1.1      wdk 	struct cfdata *cf;
    142      1.1      wdk 	void *aux;
    143      1.1      wdk {
    144      1.1      wdk 	struct confargs *ca = aux;
    145      1.1      wdk 	int addr;
    146      1.1      wdk 
    147      1.1      wdk 	if (strcmp(ca->ca_name, "le"))
    148      1.1      wdk 		return 0;
    149      1.1      wdk 
    150  1.5.6.4    skrll 	if (le_attached)
    151      1.1      wdk 		return 0;
    152      1.1      wdk 
    153  1.5.6.4    skrll 	addr = LANCE_PORT;
    154      1.1      wdk 	if (badaddr((void *)addr, 1))
    155      1.1      wdk 		return 0;
    156      1.1      wdk 
    157      1.1      wdk 	return 1;
    158      1.1      wdk }
    159      1.1      wdk 
    160      1.1      wdk #define	LE_MEMSIZE	(32*1024)
    161      1.1      wdk 
    162      1.1      wdk void
    163      1.1      wdk le_attach(parent, self, aux)
    164      1.1      wdk 	struct device *parent, *self;
    165      1.1      wdk 	void *aux;
    166      1.1      wdk {
    167      1.1      wdk 	struct le_softc *lesc = (struct le_softc *)self;
    168      1.1      wdk 	struct lance_softc *sc = &lesc->sc_am7990.lsc;
    169      1.1      wdk 	struct confargs *ca = aux;
    170      1.1      wdk 
    171      1.1      wdk 	bus_dma_tag_t dmat;
    172      1.1      wdk 	bus_dma_segment_t seg;
    173      1.1      wdk 	int rseg;
    174      1.1      wdk 
    175      1.1      wdk 	u_char *id;
    176      1.1      wdk 	int i;
    177      1.1      wdk 	caddr_t kvaddr;
    178      1.1      wdk 
    179  1.5.6.4    skrll 	id = (u_char *)ETHER_ID;
    180      1.1      wdk 	lesc->sc_bustag = ca->ca_bustag;
    181      1.1      wdk 	dmat = lesc->sc_dmatag = ca->ca_dmatag;
    182      1.1      wdk 
    183      1.1      wdk 	if (bus_space_map(ca->ca_bustag, ca->ca_addr,
    184      1.1      wdk 			  8,	/* size */
    185      1.1      wdk 			  BUS_SPACE_MAP_LINEAR,
    186      1.1      wdk 			  &lesc->sc_reg) != 0) {
    187      1.1      wdk 		printf(": cannot map registers\n");
    188      1.1      wdk 		return;
    189      1.1      wdk 	}
    190      1.1      wdk 
    191      1.1      wdk 	/*
    192      1.1      wdk 	 * Allocate a physically contiguous DMA area for the chip.
    193      1.1      wdk 	 */
    194      1.1      wdk 	if (bus_dmamem_alloc(dmat, LE_MEMSIZE, 0, 0, &seg, 1,
    195      1.1      wdk 			     &rseg, BUS_DMA_NOWAIT)) {
    196      1.1      wdk 		printf(": can't allocate DMA area\n");
    197      1.1      wdk 		return;
    198      1.1      wdk 	}
    199      1.1      wdk 	/* Map pages into kernel memory */
    200      1.1      wdk 	if (bus_dmamem_map(dmat, &seg, rseg, LE_MEMSIZE,
    201      1.1      wdk 	    &kvaddr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
    202      1.1      wdk 		printf(": can't map DMA area\n");
    203      1.1      wdk 		bus_dmamem_free(dmat, &seg, rseg);
    204      1.1      wdk 		return;
    205      1.1      wdk 	}
    206      1.1      wdk 	/* Build DMA map so we can get physical address */
    207      1.1      wdk 	if (bus_dmamap_create(dmat, LE_MEMSIZE, 1, LE_MEMSIZE,
    208      1.1      wdk 			      0, BUS_DMA_NOWAIT, &lesc->sc_dmamap)) {
    209      1.1      wdk 		printf(": can't create DMA map\n");
    210      1.1      wdk 		goto bad;
    211      1.1      wdk 	}
    212      1.1      wdk 	if (bus_dmamap_load(dmat, lesc->sc_dmamap, kvaddr, LE_MEMSIZE,
    213      1.1      wdk 			    NULL, BUS_DMA_NOWAIT)) {
    214      1.1      wdk 		printf(": can't load DMA map\n");
    215      1.1      wdk 		goto bad;
    216      1.1      wdk 	}
    217      1.1      wdk 
    218      1.1      wdk 	sc->sc_memsize = LE_MEMSIZE;	/* 16K Buffer space*/
    219      1.1      wdk 	sc->sc_mem  = (void *) MIPS_PHYS_TO_KSEG1(kvaddr);
    220      1.1      wdk 	sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr;
    221      1.1      wdk 
    222      1.1      wdk 	sc->sc_conf3 = LE_C3_BSWP;
    223      1.1      wdk 
    224      1.1      wdk 	/* Copy Ethernet hardware address from NVRAM */
    225      1.1      wdk 	for (i=0; i < 6; i++)
    226      1.1      wdk 		sc->sc_enaddr[i] = id[i*4+3];	/* XXX */
    227      1.1      wdk 
    228      1.1      wdk 	sc->sc_copytodesc = lance_copytobuf_contig;
    229      1.1      wdk 	sc->sc_copyfromdesc = lance_copyfrombuf_contig;
    230      1.1      wdk 	sc->sc_copytobuf = lance_copytobuf_contig;
    231      1.1      wdk 	sc->sc_copyfrombuf = lance_copyfrombuf_contig;
    232      1.1      wdk 	sc->sc_zerobuf = lance_zerobuf_contig;
    233      1.1      wdk 
    234      1.1      wdk 	sc->sc_rdcsr = lerdcsr;
    235      1.1      wdk 	sc->sc_wrcsr = lewrcsr;
    236      1.1      wdk 	sc->sc_hwinit = NULL;
    237      1.1      wdk 
    238      1.1      wdk 	evcnt_attach_dynamic(&lesc->sc_intrcnt, EVCNT_TYPE_INTR, NULL,
    239      1.1      wdk 			     self->dv_xname, "intr");
    240      1.2      wdk 	bus_intr_establish(lesc->sc_bustag, SYS_INTR_ETHER, 0, 0,
    241      1.2      wdk 			   le_intr, lesc);
    242      1.1      wdk 
    243      1.1      wdk 	am7990_config(&lesc->sc_am7990);
    244      1.1      wdk 	return;
    245      1.1      wdk 
    246      1.1      wdk bad:
    247      1.1      wdk 	bus_dmamem_unmap(dmat, kvaddr, LE_MEMSIZE);
    248      1.1      wdk 	bus_dmamem_free(dmat, &seg, rseg);
    249      1.1      wdk }
    250      1.1      wdk 
    251      1.1      wdk int
    252      1.2      wdk le_intr(arg)
    253      1.2      wdk 	void *arg;
    254      1.1      wdk {
    255      1.2      wdk 	struct le_softc *lesc = arg;
    256      1.1      wdk 
    257      1.2      wdk 	lesc->sc_intrcnt.ev_count++;
    258      1.2      wdk 	return am7990_intr(&lesc->sc_am7990);
    259      1.1      wdk }
    260