/* $NetBSD: if_le_isa.c,v 1.16 1998/02/04 00:37:49 thorpej Exp $ */ /*- * Copyright (c) 1997 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /*- * Copyright (c) 1995 Charles M. Hannum. All rights reserved. * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Ralph Campbell and Rick Macklem. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)if_le.c 8.2 (Berkeley) 11/16/93 */ #include "bpfilter.h" #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #endif #include #include #include #include #include #include #include #include #include #include static char *card_type[] = { "unknown", "BICC Isolan", "NE2100", "DEPCA", "PCnet-ISA" }; int le_isa_probe __P((struct device *, void *, void *)); void le_isa_attach __P((struct device *, struct device *, void *)); struct cfattach le_isa_ca = { sizeof(struct le_softc), le_isa_probe, le_isa_attach }; int depca_isa_probe __P((struct le_softc *, struct isa_attach_args *)); int ne2100_isa_probe __P((struct le_softc *, struct isa_attach_args *)); int bicc_isa_probe __P((struct le_softc *, struct isa_attach_args *)); int lance_isa_probe __P((struct am7990_softc *)); int le_isa_intredge __P((void *)); hide void le_isa_wrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t)); hide u_int16_t le_isa_rdcsr __P((struct am7990_softc *, u_int16_t)); void depca_copytobuf __P((struct am7990_softc *, void *, int, int)); void depca_copyfrombuf __P((struct am7990_softc *, void *, int, int)); void depca_zerobuf __P((struct am7990_softc *, int, int)); #define LE_ISA_MEMSIZE 16384 hide void le_isa_wrcsr(sc, port, val) struct am7990_softc *sc; u_int16_t port, val; { struct le_softc *lesc = (struct le_softc *)sc; bus_space_tag_t iot = lesc->sc_iot; bus_space_handle_t ioh = lesc->sc_ioh; bus_space_write_2(iot, ioh, lesc->sc_rap, port); bus_space_write_2(iot, ioh, lesc->sc_rdp, val); } hide u_int16_t le_isa_rdcsr(sc, port) struct am7990_softc *sc; u_int16_t port; { struct le_softc *lesc = (struct le_softc *)sc; bus_space_tag_t iot = lesc->sc_iot; bus_space_handle_t ioh = lesc->sc_ioh; u_int16_t val; bus_space_write_2(iot, ioh, lesc->sc_rap, port); val = bus_space_read_2(iot, ioh, lesc->sc_rdp); return (val); } int le_isa_probe(parent, match, aux) struct device *parent; void *match, *aux; { struct le_softc *lesc = match; struct isa_attach_args *ia = aux; /* Disallow wildcarded i/o address. */ if (ia->ia_iobase == ISACF_PORT_DEFAULT) return (0); if (bicc_isa_probe(lesc, ia)) return (1); if (ne2100_isa_probe(lesc, ia)) return (1); if (depca_isa_probe(lesc, ia)) return (1); return (0); } int depca_isa_probe(lesc, ia) struct le_softc *lesc; struct isa_attach_args *ia; { struct am7990_softc *sc = &lesc->sc_am7990; int iobase = ia->ia_iobase, port; bus_space_tag_t iot = ia->ia_iot; bus_space_handle_t ioh; bus_space_handle_t memh; u_int8_t csr; #if 0 u_int32_t sum, rom_sum; u_int8_t x; #endif int i; /* Map i/o space. */ if (bus_space_map(iot, iobase, 16, 0, &ioh)) return 0; if (ia->ia_maddr == MADDRUNK || ia->ia_msize == -1) goto bad; switch (ia->ia_msize) { case 65536: csr = DEPCA_CSR_SHE; break; case 32768: csr = DEPCA_CSR_SHE | DEPCA_CSR_LOW32K; break; default: goto bad; } /* Map card RAM. */ if (bus_space_map(ia->ia_memt, ia->ia_maddr, ia->ia_msize, 0, &memh)) goto bad; /* Just needed to check mapability; don't need it anymore. */ bus_space_unmap(ia->ia_memt, memh, ia->ia_msize); lesc->sc_iot = iot; lesc->sc_ioh = ioh; lesc->sc_rap = DEPCA_RAP; lesc->sc_rdp = DEPCA_RDP; lesc->sc_card = DEPCA; if (lance_isa_probe(sc) == 0) goto bad; bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_DUM); /* * Extract the physical MAC address from the ROM. * * The address PROM is 32 bytes wide, and we access it through * a single I/O port. On each read, it rotates to the next * position. We find the ethernet address by looking for a * particular sequence of bytes (0xff, 0x00, 0x55, 0xaa, 0xff, * 0x00, 0x55, 0xaa), and then reading the next 8 bytes (the * ethernet address and a checksum). * * It appears that the PROM can be at one of two locations, so * we just try both. */ port = DEPCA_ADP; for (i = 0; i < 32; i++) if (bus_space_read_1(iot, ioh, port) == 0xff && bus_space_read_1(iot, ioh, port) == 0x00 && bus_space_read_1(iot, ioh, port) == 0x55 && bus_space_read_1(iot, ioh, port) == 0xaa && bus_space_read_1(iot, ioh, port) == 0xff && bus_space_read_1(iot, ioh, port) == 0x00 && bus_space_read_1(iot, ioh, port) == 0x55 && bus_space_read_1(iot, ioh, port) == 0xaa) goto found; port = DEPCA_ADP + 1; for (i = 0; i < 32; i++) if (bus_space_read_1(iot, ioh, port) == 0xff && bus_space_read_1(iot, ioh, port) == 0x00 && bus_space_read_1(iot, ioh, port) == 0x55 && bus_space_read_1(iot, ioh, port) == 0xaa && bus_space_read_1(iot, ioh, port) == 0xff && bus_space_read_1(iot, ioh, port) == 0x00 && bus_space_read_1(iot, ioh, port) == 0x55 && bus_space_read_1(iot, ioh, port) == 0xaa) goto found; printf("%s: address not found\n", sc->sc_dev.dv_xname); goto bad; found: for (i = 0; i < sizeof(sc->sc_enaddr); i++) sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, port); #if 0 sum = (sc->sc_enaddr[0] << 2) + (sc->sc_enaddr[1] << 10) + (sc->sc_enaddr[2] << 1) + (sc->sc_enaddr[3] << 9) + (sc->sc_enaddr[4] << 0) + (sc->sc_enaddr[5] << 8); sum = (sum & 0xffff) + (sum >> 16); sum = (sum & 0xffff) + (sum >> 16); rom_sum = bus_space_read_1(iot, ioh, port); rom_sum |= bus_space_read_1(iot, ioh, port) << 8; if (sum != rom_sum) { printf("%s: checksum mismatch; calculated %04x != read %04x", sc->sc_dev.dv_xname, sum, rom_sum); goto bad; } #endif /* * XXX INDIRECT BROKENNESS! * XXX Should always unmap, and re-map in if_le_isa_attach(). */ bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_DUM | DEPCA_CSR_IEN | csr); ia->ia_iosize = 16; ia->ia_drq = DRQUNK; return 1; bad: bus_space_unmap(iot, ioh, 16); return 0; } int ne2100_isa_probe(lesc, ia) struct le_softc *lesc; struct isa_attach_args *ia; { struct am7990_softc *sc = &lesc->sc_am7990; int iobase = ia->ia_iobase; bus_space_tag_t iot = ia->ia_iot; bus_space_handle_t ioh; int i; /* Map i/o space. */ if (bus_space_map(iot, iobase, 24, 0, &ioh)) return 0; lesc->sc_iot = iot; lesc->sc_ioh = ioh; lesc->sc_rap = NE2100_RAP; lesc->sc_rdp = NE2100_RDP; lesc->sc_card = NE2100; if (lance_isa_probe(sc) == 0) { bus_space_unmap(iot, ioh, 24); return 0; } /* * Extract the physical MAC address from the ROM. */ for (i = 0; i < sizeof(sc->sc_enaddr); i++) sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i); /* * XXX INDIRECT BROKENNESS! * XXX Should always unmap, and re-map in if_le_isa_attach(). */ ia->ia_iosize = 24; return 1; } int bicc_isa_probe(lesc, ia) struct le_softc *lesc; struct isa_attach_args *ia; { struct am7990_softc *sc = &lesc->sc_am7990; int iobase = ia->ia_iobase; bus_space_tag_t iot = ia->ia_iot; bus_space_handle_t ioh; int i; /* Map i/o space. */ if (bus_space_map(iot, iobase, 16, 0, &ioh)) return 0; lesc->sc_iot = iot; lesc->sc_ioh = ioh; lesc->sc_rap = BICC_RAP; lesc->sc_rdp = BICC_RDP; lesc->sc_card = BICC; if (lance_isa_probe(sc) == 0) { bus_space_unmap(iot, ioh, 16); return 0; } /* * Extract the physical MAC address from the ROM. */ for (i = 0; i < sizeof(sc->sc_enaddr); i++) sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i * 2); /* * XXX INDIRECT BROKENNESS! * XXX Should always unmap, and re-map in if_le_isa_attach(). */ ia->ia_iosize = 16; return 1; } /* * Determine which chip is present on the card. */ int lance_isa_probe(sc) struct am7990_softc *sc; { /* Stop the LANCE chip and put it in a known state. */ le_isa_wrcsr(sc, LE_CSR0, LE_C0_STOP); delay(100); if (le_isa_rdcsr(sc, LE_CSR0) != LE_C0_STOP) return 0; le_isa_wrcsr(sc, LE_CSR3, sc->sc_conf3); return 1; } void le_isa_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct le_softc *lesc = (void *)self; struct am7990_softc *sc = &lesc->sc_am7990; struct isa_attach_args *ia = aux; bus_space_tag_t iot = ia->ia_iot; bus_space_tag_t memt = ia->ia_memt; bus_dma_tag_t dmat = ia->ia_dmat; bus_space_handle_t memh; bus_dma_segment_t seg; int rseg; printf(": %s Ethernet\n", card_type[lesc->sc_card]); lesc->sc_iot = iot; lesc->sc_memt = memt; lesc->sc_dmat = dmat; /* XXX SHOULD RE-MAP I/O SPACE HERE. */ if (lesc->sc_card == DEPCA) { u_char val; int i; /* Map shared memory. */ if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize, 0, &memh)) { printf("%s: can't map mem space\n", sc->sc_dev.dv_xname); return; } lesc->sc_memh = memh; val = 0xff; for (;;) { bus_space_set_region_1(memt, memh, 0, val, ia->ia_msize); for (i = 0; i < ia->ia_msize; i++) if (bus_space_read_1(memt, memh, 1) != val) { printf("%s: failed to clear memory\n", sc->sc_dev.dv_xname); return; } if (val == 0x00) break; val -= 0x55; } sc->sc_conf3 = LE_C3_ACON; sc->sc_mem = 0; /* Not used. */ sc->sc_addr = 0; sc->sc_memsize = ia->ia_msize; } else { /* * Allocate a DMA area for the card. */ if (bus_dmamem_alloc(dmat, LE_ISA_MEMSIZE, NBPG, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) { printf("%s: couldn't allocate memory for card\n", sc->sc_dev.dv_xname); return; } if (bus_dmamem_map(dmat, &seg, rseg, LE_ISA_MEMSIZE, (caddr_t *)&sc->sc_mem, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { printf("%s: couldn't map memory for card\n", sc->sc_dev.dv_xname); return; } /* * Create and load the DMA map for the DMA area. */ if (bus_dmamap_create(dmat, LE_ISA_MEMSIZE, 1, LE_ISA_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) { printf("%s: couldn't create DMA map\n", sc->sc_dev.dv_xname); bus_dmamem_free(dmat, &seg, rseg); return; } if (bus_dmamap_load(dmat, lesc->sc_dmam, sc->sc_mem, LE_ISA_MEMSIZE, NULL, BUS_DMA_NOWAIT)) { printf("%s: coundn't load DMA map\n", sc->sc_dev.dv_xname); bus_dmamem_free(dmat, &seg, rseg); return; } sc->sc_conf3 = 0; sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr; sc->sc_memsize = LE_ISA_MEMSIZE; } if (lesc->sc_card == DEPCA) { sc->sc_copytodesc = depca_copytobuf; sc->sc_copyfromdesc = depca_copyfrombuf; sc->sc_copytobuf = depca_copytobuf; sc->sc_copyfrombuf = depca_copyfrombuf; sc->sc_zerobuf = depca_zerobuf; } else { sc->sc_copytodesc = am7990_copytobuf_contig; sc->sc_copyfromdesc = am7990_copyfrombuf_contig; sc->sc_copytobuf = am7990_copytobuf_contig; sc->sc_copyfrombuf = am7990_copyfrombuf_contig; sc->sc_zerobuf = am7990_zerobuf_contig; } sc->sc_rdcsr = le_isa_rdcsr; sc->sc_wrcsr = le_isa_wrcsr; sc->sc_hwinit = NULL; printf("%s", sc->sc_dev.dv_xname); am7990_config(sc); if (ia->ia_drq != DRQUNK) isa_dmacascade(parent, ia->ia_drq); lesc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, IPL_NET, le_isa_intredge, sc); } /* * Controller interrupt. */ int le_isa_intredge(arg) void *arg; { if (am7990_intr(arg) == 0) return (0); for (;;) if (am7990_intr(arg) == 0) return (1); } /* * DEPCA shared memory access functions. */ void depca_copytobuf(sc, from, boff, len) struct am7990_softc *sc; void *from; int boff, len; { struct le_softc *lesc = (struct le_softc *)sc; bus_space_write_region_1(lesc->sc_memt, lesc->sc_memh, boff, from, len); } void depca_copyfrombuf(sc, to, boff, len) struct am7990_softc *sc; void *to; int boff, len; { struct le_softc *lesc = (struct le_softc *)sc; bus_space_read_region_1(lesc->sc_memt, lesc->sc_memh, boff, to, len); } void depca_zerobuf(sc, boff, len) struct am7990_softc *sc; int boff, len; { struct le_softc *lesc = (struct le_softc *)sc; #if 0 /* XXX !! */ bus_space_set_region_1(lesc->sc_memt, lesc->sc_memh, boff, 0x00, len); #else for (; len != 0; boff++, len--) bus_space_write_1(lesc->sc_memt, lesc->sc_memh, boff, 0x00); #endif }