/* $NetBSD: uha_eisa.c,v 1.2 1996/09/01 00:20:21 mycroft Exp $ */ /* * Copyright (c) 1994, 1996 Charles M. Hannum. All rights reserved. * * 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 Charles M. Hannum. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define UHA_EISA_SLOT_OFFSET 0xc80 #define UHA_EISA_IOSIZE 0x020 int uha_eisa_match __P((struct device *, void *, void *)); void uha_eisa_attach __P((struct device *, struct device *, void *)); struct cfattach uha_eisa_ca = { sizeof(struct uha_softc), uha_eisa_match, uha_eisa_attach }; #define KVTOPHYS(x) vtophys(x) int u24_find __P((bus_chipset_tag_t, bus_io_handle_t, struct uha_softc *)); void u24_start_mbox __P((struct uha_softc *, struct uha_mscp *)); int u24_poll __P((struct uha_softc *, struct scsi_xfer *, int)); int u24_intr __P((void *)); void u24_init __P((struct uha_softc *)); /* * Check the slots looking for a board we recognise * If we find one, note it's address (slot) and call * the actual probe routine to check it out. */ int uha_eisa_match(parent, match, aux) struct device *parent; void *match, *aux; { struct eisa_attach_args *ea = aux; bus_chipset_tag_t bc = ea->ea_bc; bus_io_handle_t ioh; int rv; /* must match one of our known ID strings */ if (strncmp(ea->ea_idstring, "USC024", 6)) return (0); if (bus_io_map(bc, EISA_SLOT_ADDR(ea->ea_slot) + UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, &ioh)) return (0); rv = u24_find(bc, ioh, NULL); bus_io_unmap(bc, ioh, UHA_EISA_IOSIZE); return (rv); } /* * Attach all the sub-devices we can find */ void uha_eisa_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct eisa_attach_args *ea = aux; struct uha_softc *sc = (void *)self; bus_chipset_tag_t bc = ea->ea_bc; bus_io_handle_t ioh; eisa_chipset_tag_t ec = ea->ea_ec; eisa_intr_handle_t ih; const char *model, *intrstr; if (!strncmp(ea->ea_idstring, "USC024", 6)) model = EISA_PRODUCT_USC0240; else model = "unknown model!"; printf(": %s\n", model); if (bus_io_map(bc, EISA_SLOT_ADDR(ea->ea_slot) + UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, &ioh)) panic("uha_attach: could not map I/O addresses"); sc->sc_bc = bc; sc->sc_ioh = ioh; if (!u24_find(bc, ioh, sc)) panic("uha_attach: u24_find failed!"); if (eisa_intr_map(ec, sc->sc_irq, &ih)) { printf("%s: couldn't map interrupt (%d)\n", sc->sc_dev.dv_xname, sc->sc_irq); return; } intrstr = eisa_intr_string(ec, ih); sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, u24_intr, sc); if (sc->sc_ih == NULL) { printf("%s: couldn't establish interrupt", sc->sc_dev.dv_xname); if (intrstr != NULL) printf(" at %s", intrstr); printf("\n"); return; } printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); /* Save function pointers for later use. */ sc->start_mbox = u24_start_mbox; sc->poll = u24_poll; sc->init = u24_init; uha_attach(sc); } int u24_find(bc, ioh, sc) bus_chipset_tag_t bc; bus_io_handle_t ioh; struct uha_softc *sc; { u_int8_t config0, config1, config2; int irq, drq; int resetcount = 4000; /* 4 secs? */ config0 = bus_io_read_1(bc, ioh, U24_CONFIG + 0); config1 = bus_io_read_1(bc, ioh, U24_CONFIG + 1); config2 = bus_io_read_1(bc, ioh, U24_CONFIG + 2); if ((config0 & U24_MAGIC1) == 0 || (config1 & U24_MAGIC2) == 0) return (0); drq = -1; switch (config0 & U24_IRQ_MASK) { case U24_IRQ10: irq = 10; break; case U24_IRQ11: irq = 11; break; case U24_IRQ14: irq = 14; break; case U24_IRQ15: irq = 15; break; default: printf("u24_find: illegal irq setting %x\n", config0 & U24_IRQ_MASK); return (0); } bus_io_write_1(bc, ioh, U24_LINT, UHA_ASRST); while (--resetcount) { if (bus_io_read_1(bc, ioh, U24_LINT)) break; delay(1000); /* 1 mSec per loop */ } if (!resetcount) { printf("u24_find: board timed out during reset\n"); return (0); } /* if we want to fill in softc, do so now */ if (sc != NULL) { sc->sc_irq = irq; sc->sc_drq = drq; sc->sc_scsi_dev = config2 & U24_HOSTID_MASK; } return (1); } void u24_start_mbox(sc, mscp) struct uha_softc *sc; struct uha_mscp *mscp; { bus_chipset_tag_t bc = sc->sc_bc; bus_io_handle_t ioh = sc->sc_ioh; int spincount = 100000; /* 1s should be enough */ while (--spincount) { if ((bus_io_read_1(bc, ioh, U24_LINT) & U24_LDIP) == 0) break; delay(100); } if (!spincount) { printf("%s: uha_start_mbox, board not responding\n", sc->sc_dev.dv_xname); Debugger(); } bus_io_write_4(bc, ioh, U24_OGMPTR, KVTOPHYS(mscp)); if (mscp->flags & MSCP_ABORT) bus_io_write_1(bc, ioh, U24_OGMCMD, 0x80); else bus_io_write_1(bc, ioh, U24_OGMCMD, 0x01); bus_io_write_1(bc, ioh, U24_LINT, U24_OGMFULL); if ((mscp->xs->flags & SCSI_POLL) == 0) timeout(uha_timeout, mscp, (mscp->timeout * hz) / 1000); } int u24_poll(sc, xs, count) struct uha_softc *sc; struct scsi_xfer *xs; int count; { bus_chipset_tag_t bc = sc->sc_bc; bus_io_handle_t ioh = sc->sc_ioh; while (count) { /* * If we had interrupts enabled, would we * have got an interrupt? */ if (bus_io_read_1(bc, ioh, U24_SINT) & U24_SDIP) u24_intr(sc); if (xs->flags & ITSDONE) return (0); delay(1000); count--; } return (1); } int u24_intr(arg) void *arg; { struct uha_softc *sc = arg; bus_chipset_tag_t bc = sc->sc_bc; bus_io_handle_t ioh = sc->sc_ioh; struct uha_mscp *mscp; u_char uhastat; u_long mboxval; #ifdef UHADEBUG printf("%s: uhaintr ", sc->sc_dev.dv_xname); #endif /*UHADEBUG */ if ((bus_io_read_1(bc, ioh, U24_SINT) & U24_SDIP) == 0) return (0); for (;;) { /* * First get all the information and then * acknowledge the interrupt */ uhastat = bus_io_read_1(bc, ioh, U24_SINT); mboxval = bus_io_read_4(bc, ioh, U24_ICMPTR); bus_io_write_1(bc, ioh, U24_SINT, U24_ICM_ACK); bus_io_write_1(bc, ioh, U24_ICMCMD, 0); #ifdef UHADEBUG printf("status = 0x%x ", uhastat); #endif /*UHADEBUG*/ /* * Process the completed operation */ mscp = uha_mscp_phys_kv(sc, mboxval); if (!mscp) { printf("%s: BAD MSCP RETURNED!\n", sc->sc_dev.dv_xname); continue; /* whatever it was, it'll timeout */ } untimeout(uha_timeout, mscp); uha_done(sc, mscp); if ((bus_io_read_1(bc, ioh, U24_SINT) & U24_SDIP) == 0) return (1); } } void u24_init(sc) struct uha_softc *sc; { bus_chipset_tag_t bc = sc->sc_bc; bus_io_handle_t ioh = sc->sc_ioh; /* free OGM and ICM */ bus_io_write_1(bc, ioh, U24_OGMCMD, 0); bus_io_write_1(bc, ioh, U24_ICMCMD, 0); /* make sure interrupts are enabled */ #ifdef UHADEBUG printf("u24_init: lmask=%02x, smask=%02x\n", bus_io_read_1(bc, ioh, U24_LMASK), bus_io_read_1(bc, ioh, U24_SMASK)); #endif bus_io_write_1(bc, ioh, U24_LMASK, 0xd2); /* XXX */ bus_io_write_1(bc, ioh, U24_SMASK, 0x92); /* XXX */ }