/* $NetBSD: osiop_pcctwo.c,v 1.10 2006/03/29 07:07:41 thorpej Exp $ */ /*- * Copyright (c) 1999, 2002 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Steve C. Woodford. * * 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. */ /* * Front-end attachment code for the ncr53c710 SCSI controller * on mvme68k/mvme88k boards. */ #include __KERNEL_RCSID(0, "$NetBSD: osiop_pcctwo.c,v 1.10 2006/03/29 07:07:41 thorpej Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include int osiop_pcctwo_match(struct device *, struct cfdata *, void *); void osiop_pcctwo_attach(struct device *, struct device *, void *); struct osiop_pcctwo_softc { struct osiop_softc sc_osiop; struct evcnt sc_evcnt; }; CFATTACH_DECL(osiop_pcctwo, sizeof(struct osiop_pcctwo_softc), osiop_pcctwo_match, osiop_pcctwo_attach, NULL, NULL); static int osiop_pcctwo_intr(void *); extern struct cfdriver osiop_cd; /* ARGSUSED */ int osiop_pcctwo_match(parent, cf, args) struct device *parent; struct cfdata *cf; void *args; { struct pcctwo_attach_args *pa; bus_space_handle_t bsh; int rv; pa = args; if (strcmp(pa->pa_name, osiop_cd.cd_name)) return (0); /* * See if the SCSI controller is responding. */ if (bus_space_map(pa->pa_bust, pa->pa_offset, OSIOP_NREGS, 0, &bsh)) return (0); rv = bus_space_peek_1(pa->pa_bust, bsh, OSIOP_CTEST8, NULL); bus_space_unmap(pa->pa_bust, bsh, OSIOP_NREGS); if (rv) return (0); pa->pa_ipl = cf->pcctwocf_ipl; return (1); } /* ARGSUSED */ void osiop_pcctwo_attach(parent, self, args) struct device *parent; struct device *self; void *args; { struct pcctwo_attach_args *pa; struct osiop_pcctwo_softc *sc; int clk, ctest7; pa = (struct pcctwo_attach_args *) args; sc = device_private(self); /* * On the '17x the siop's clock is the same as the CPU clock. * On the other boards, the siop runs at twice the CPU clock. * Also, the 17x cannot do proper bus-snooping (the 68060 is * lame in this repspect) so don't enable it on that board. */ #ifdef MVME68K if (machineid == MVME_172 || machineid == MVME_177) { clk = cpuspeed; ctest7 = 0; } else { clk = cpuspeed * 2; ctest7 = OSIOP_CTEST7_SC0; } #else #error Set up siop clock speed for mvme187 #endif sc->sc_osiop.sc_bst = pa->pa_bust; sc->sc_osiop.sc_dmat = pa->pa_dmat; (void) bus_space_map(sc->sc_osiop.sc_bst, pa->pa_offset, OSIOP_NREGS, 0, &sc->sc_osiop.sc_reg); sc->sc_osiop.sc_clock_freq = clk; sc->sc_osiop.sc_ctest7 = ctest7 | OSIOP_CTEST7_TT1; sc->sc_osiop.sc_dcntl = OSIOP_DCNTL_EA; sc->sc_osiop.sc_id = 7; /* XXX: Could use NVRAM setting */ /* Attach main MI driver */ osiop_attach(&sc->sc_osiop); /* Register the event counter */ evcnt_attach_dynamic(&sc->sc_evcnt, EVCNT_TYPE_INTR, pcctwointr_evcnt(pa->pa_ipl), "disk", sc->sc_osiop.sc_dev.dv_xname); /* Hook the chip's interrupt */ pcctwointr_establish(PCCTWOV_SCSI, osiop_pcctwo_intr, pa->pa_ipl, sc, &sc->sc_evcnt); } static int osiop_pcctwo_intr(arg) void *arg; { struct osiop_pcctwo_softc *sc = (struct osiop_pcctwo_softc *) arg; u_char istat; /* * Catch any errors which can happen when the SIOP is * local bus master... */ istat = pcc2_reg_read(sys_pcctwo, PCC2REG_SCSI_ERR_STATUS); if ((istat & PCCTWO_ERR_SR_MASK) != 0) { printf("%s: Local bus error: 0x%02x\n", sc->sc_osiop.sc_dev.dv_xname, istat); istat |= PCCTWO_ERR_SR_SCLR; pcc2_reg_write(sys_pcctwo, PCC2REG_SCSI_ERR_STATUS, istat); } /* This is potentially nasty, since the IRQ is level triggered... */ if (sc->sc_osiop.sc_flags & OSIOP_INTSOFF) return (0); istat = osiop_read_1(&sc->sc_osiop, OSIOP_ISTAT); if ((istat & (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) return (0); /* Save interrupt details for the back-end interrupt handler */ sc->sc_osiop.sc_sstat0 = osiop_read_1(&sc->sc_osiop, OSIOP_SSTAT0); sc->sc_osiop.sc_istat = istat; sc->sc_osiop.sc_dstat = osiop_read_1(&sc->sc_osiop, OSIOP_DSTAT); /* Deal with the interrupt */ osiop_intr(&sc->sc_osiop); return (1); }