/* $NetBSD: if_le_vme.c,v 1.4 1997/03/17 13:29:05 leo Exp $ */ /*- * Copyright (c) 1997 Leo Weppelman. All rights reserved. * 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 struct le_addresses { u_long reg_addr; u_long mem_addr; int irq; } lestd[] = { { 0xfe00fff0, 0xfe010000, IRQUNK }, /* Riebl VME */ { 0xffcffff0, 0xffcf0000, 5 }, /* PAM VME */ { 0xfecffff0, 0xfecf0000, 5 } /* Rhotron VME */ }; #define NLESTD (sizeof(lestd) / sizeof(lestd[0])) /* * All cards have 64KB RAM. However.... On the Riebl cards the area * between the offsets 0xee70-0xeec0 is used to store config data. */ #define MEMSIZE (64*1024) /* * Default mac for RIEBL cards without a (working) battery. The first 4 bytes * are the manufacturer id. */ static u_char riebl_def_mac[] = { 0x00, 0x00, 0x36, 0x04, 0x00, 0x00 }; static int le_intr __P((struct le_softc *, int)); static void lepseudointr __P((struct le_softc *, void *)); static int le_vme_match __P((struct device *, struct cfdata *, void *)); static void le_vme_attach __P((struct device *, struct device *, void *)); static int probe_addresses __P((bus_space_tag_t *, bus_space_tag_t *, bus_space_handle_t *, bus_space_handle_t *)); static void riebl_skip_reserved_area __P((struct am7990_softc *)); struct cfattach le_vme_ca = { sizeof(struct le_softc), le_vme_match, le_vme_attach }; hide void lewrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t)); hide u_int16_t lerdcsr __P((struct am7990_softc *, u_int16_t)); hide void lewrcsr(sc, port, val) struct am7990_softc *sc; u_int16_t port, val; { struct le_softc *lesc = (struct le_softc *)sc; int s; s = splhigh(); bus_space_write_2(lesc->sc_iot, lesc->sc_ioh, LER_RAP, port); bus_space_write_2(lesc->sc_iot, lesc->sc_ioh, LER_RDP, val); splx(s); } hide u_int16_t lerdcsr(sc, port) struct am7990_softc *sc; u_int16_t port; { struct le_softc *lesc = (struct le_softc *)sc; u_int16_t val; int s; s = splhigh(); bus_space_write_2(lesc->sc_iot, lesc->sc_ioh, LER_RAP, port); val = bus_space_read_2(lesc->sc_iot, lesc->sc_ioh, LER_RDP); splx(s); return (val); } static int le_vme_match(parent, cfp, aux) struct device *parent; struct cfdata *cfp; void *aux; { struct vme_attach_args *va = aux; int i; bus_space_tag_t iot; bus_space_tag_t memt; bus_space_handle_t ioh; bus_space_handle_t memh; iot = va->va_iot; memt = va->va_memt; for (i = 0; i < NLESTD; i++) { struct le_addresses *le_ap = &lestd[i]; int found = 0; if ((va->va_iobase != IOBASEUNK) && (va->va_iobase != le_ap->reg_addr)) continue; if ((va->va_maddr != MADDRUNK) && (va->va_maddr != le_ap->mem_addr)) continue; if ((le_ap->irq != IRQUNK) && (va->va_irq != le_ap->irq)) continue; if (bus_space_map(iot, le_ap->reg_addr, 16, 0, &ioh)) { printf("leprobe: cannot map io-area\n"); return (0); } if (bus_space_map(memt, le_ap->mem_addr, MEMSIZE, 0, &memh)) { bus_space_unmap(iot, (caddr_t)le_ap->reg_addr, 16); printf("leprobe: cannot map memory-area\n"); return (0); } found = probe_addresses(&iot, &memt, &ioh, &memh); bus_space_unmap(iot, (caddr_t)le_ap->reg_addr, 16); bus_space_unmap(memt, (caddr_t)le_ap->mem_addr, 8*NBPG); if (found) { va->va_iobase = le_ap->reg_addr; va->va_iosize = 16; va->va_maddr = le_ap->mem_addr; va->va_msize = MEMSIZE; if (va->va_irq == IRQUNK) va->va_irq = le_ap->irq; return 1; } } return (0); } static int probe_addresses(iot, memt, ioh, memh) bus_space_tag_t *iot; bus_space_tag_t *memt; bus_space_handle_t *ioh; bus_space_handle_t *memh; { /* * Test accesibility of register and memory area */ if(!bus_space_peek_2(*iot, *ioh, LER_RDP)) return 0; if(!bus_space_peek_1(*memt, *memh, 0)) return 0; /* * Test for writable memory */ bus_space_write_2(*memt, *memh, 0, 0xa5a5); if (bus_space_read_2(*memt, *memh, 0) != 0xa5a5) return 0; /* * Test writability of selector port. */ bus_space_write_2(*iot, *ioh, LER_RAP, LE_CSR1); if (bus_space_read_2(*iot, *ioh, LER_RAP) != LE_CSR1) return 0; /* * Do a small register test */ bus_space_write_2(*iot, *ioh, LER_RAP, LE_CSR0); bus_space_write_2(*iot, *ioh, LER_RDP, LE_C0_INIT | LE_C0_STOP); if (bus_space_read_2(*iot, *ioh, LER_RDP) != LE_C0_STOP) return 0; bus_space_write_2(*iot, *ioh, LER_RDP, LE_C0_STOP); if (bus_space_read_2(*iot, *ioh, LER_RDP) != LE_C0_STOP) return 0; return 1; } /* * Interrupt mess. Because the card's interrupt is hardwired to either * ipl5 or ipl3 (mostly on ipl5) and raising splnet to spl5() just won't do * (it kills the serial at the least), we use a 2-level interrupt sceme. The * card interrupt is routed to 'le_intr'. If the previous ipl was below * splnet, just call the mi-function. If not, save the interrupt status, * turn off card interrupts (the card is *very* persistent) and arrange * for a softint 'callback' through 'lepseudointr'. */ static int le_intr(lesc, sr) struct le_softc *lesc; int sr; { struct am7990_softc *sc = &lesc->sc_am7990; u_int16_t csr0; if ((sr & PSL_IPL) < IPL_NET) am7990_intr(sc); else { sc->sc_saved_csr0 = csr0 = lerdcsr(sc, LE_CSR0); lewrcsr(sc, LE_CSR0, csr0 & ~LE_C0_INEA); add_sicallback((si_farg)lepseudointr, lesc, sc); } return 1; } static void lepseudointr(lesc, sc) struct le_softc *lesc; void *sc; { int s; s = splx(lesc->sc_splval); am7990_intr(sc); splx(s); } static void le_vme_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct le_softc *lesc = (struct le_softc *)self; struct am7990_softc *sc = &lesc->sc_am7990; struct vme_attach_args *va = aux; bus_space_handle_t ioh; bus_space_handle_t memh; int i; printf("\n%s: ", sc->sc_dev.dv_xname); if (bus_space_map(va->va_iot, va->va_iobase, va->va_iosize, 0, &ioh)) panic("leattach: cannot map io-area\n"); if (bus_space_map(va->va_memt, va->va_maddr, va->va_msize, 0, &memh)) panic("leattach: cannot map mem-area\n"); lesc->sc_iot = va->va_iot; lesc->sc_ioh = ioh; lesc->sc_memt = va->va_memt; lesc->sc_memh = memh; lesc->sc_splval = (va->va_irq << 8) | PSL_S; /* XXX */ /* * Go on to find board type */ if (bus_space_peek_1(va->va_iot, ioh, LER_EEPROM)) { printf("PAM card"); lesc->sc_type = LE_PAM; bus_space_read_1(va->va_iot, ioh, LER_MEME); } else { printf("Riebl card"); if(bus_space_read_4(va->va_memt, memh, RIEBL_MAGIC_ADDR) == RIEBL_MAGIC) lesc->sc_type = LE_NEW_RIEBL; else { printf("(without battery) "); lesc->sc_type = LE_OLD_RIEBL; } } 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 = lerdcsr; sc->sc_wrcsr = lewrcsr; sc->sc_hwinit = NULL; sc->sc_conf3 = LE_C3_BSWP; sc->sc_addr = 0; sc->sc_memsize = va->va_msize; sc->sc_mem = (void *)memh; /* XXX */ /* * Get MAC address */ switch (lesc->sc_type) { case LE_OLD_RIEBL: bcopy(riebl_def_mac, sc->sc_enaddr, sizeof(sc->sc_enaddr)); break; case LE_NEW_RIEBL: for (i = 0; i < sizeof(sc->sc_enaddr); i++) sc->sc_enaddr[i] = bus_space_read_1(va->va_memt, memh, i + RIEBL_MAC_ADDR); break; case LE_PAM: i = bus_space_read_1(va->va_iot, ioh, LER_EEPROM); for (i = 0; i < sizeof(sc->sc_enaddr); i++) { sc->sc_enaddr[i] = (bus_space_read_2(va->va_memt, memh, 2 * i) << 4) | (bus_space_read_2(va->va_memt, memh, 2 * i + 1) & 0xf); } i = bus_space_read_1(va->va_iot, ioh, LER_MEME); break; } am7990_config(sc); if ((lesc->sc_type == LE_OLD_RIEBL) || (lesc->sc_type == LE_NEW_RIEBL)) riebl_skip_reserved_area(sc); /* * XXX: We always use uservector 64.... */ if ((lesc->sc_intr = intr_establish(64, USER_VEC, 0, (hw_ifun_t)le_intr, lesc)) == NULL) { printf("le_vme_attach: Can't establish interrupt\n"); return; } /* * Notify the card of the vector */ switch (lesc->sc_type) { case LE_OLD_RIEBL: case LE_NEW_RIEBL: bus_space_write_2(va->va_memt, memh, RIEBL_IVEC_ADDR, 64 + 64); break; case LE_PAM: bus_space_write_1(va->va_iot, ioh, LER_IVEC, 64 + 64); break; } /* * Unmask the VME-interrupt we're on */ if (machineid & ATARI_TT) SCU->vme_mask |= 1 << va->va_irq; } /* * True if 'addr' containe within [start,len] */ #define WITHIN(start, len, addr) \ ((addr >= start) && ((addr) <= ((start) + (len)))) static void riebl_skip_reserved_area(sc) struct am7990_softc *sc; { int offset = 0; int i; for(i = 0; i < sc->sc_nrbuf; i++) { if (WITHIN(sc->sc_rbufaddr[i], LEBLEN, RIEBL_RES_START) || WITHIN(sc->sc_rbufaddr[i], LEBLEN, RIEBL_RES_END)) { offset = RIEBL_RES_END - sc->sc_rbufaddr[i]; } sc->sc_rbufaddr[i] += offset; } for(i = 0; i < sc->sc_ntbuf; i++) { if (WITHIN(sc->sc_tbufaddr[i], LEBLEN, RIEBL_RES_START) || WITHIN(sc->sc_tbufaddr[i], LEBLEN, RIEBL_RES_END)) { offset = RIEBL_RES_END - sc->sc_tbufaddr[i]; } sc->sc_tbufaddr[i] += offset; } }