/* $NetBSD: asc.c,v 1.15 1998/11/19 21:43:00 thorpej Exp $ */ /*- * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace * Simulation Facility, NASA Ames Research Center; Paul Kranenburg. * * 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) 1994 Peter Galbavy * 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 Peter Galbavy * 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. */ /* * Based on aic6360 by Jarle Greipsland * * Acknowledgements: Many of the algorithms used in this driver are * inspired by the work of Julian Elischer (julian@tfs.com) and * Charles Hannum (mycroft@duality.gnu.ai.mit.edu). Thanks a million! */ #include /* RCS ID & Copyright macro defns */ __KERNEL_RCSID(0, "$NetBSD: asc.c,v 1.15 1998/11/19 21:43:00 thorpej Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include int asc_tcds_match __P((struct device *, struct cfdata *, void *)); void asc_tcds_attach __P((struct device *, struct device *, void *)); /* Linkup to the rest of the kernel */ struct cfattach asc_tcds_ca = { sizeof(struct asc_tcds_softc), asc_tcds_match, asc_tcds_attach }; struct scsipi_device asc_tcds_dev = { NULL, /* Use default error handler */ NULL, /* have a queue, served by this */ NULL, /* have no async handler */ NULL, /* Use default 'done' routine */ }; /* * Functions and the switch for the MI code. */ u_char asc_tcds_read_reg __P((struct ncr53c9x_softc *, int)); void asc_tcds_write_reg __P((struct ncr53c9x_softc *, int, u_char)); int asc_tcds_dma_isintr __P((struct ncr53c9x_softc *)); void asc_tcds_dma_reset __P((struct ncr53c9x_softc *)); int asc_tcds_dma_intr __P((struct ncr53c9x_softc *)); int asc_tcds_dma_setup __P((struct ncr53c9x_softc *, caddr_t *, size_t *, int, size_t *)); void asc_tcds_dma_go __P((struct ncr53c9x_softc *)); void asc_tcds_dma_stop __P((struct ncr53c9x_softc *)); int asc_tcds_dma_isactive __P((struct ncr53c9x_softc *)); void asc_tcds_clear_latched_intr __P((struct ncr53c9x_softc *)); struct ncr53c9x_glue asc_tcds_glue = { asc_tcds_read_reg, asc_tcds_write_reg, asc_tcds_dma_isintr, asc_tcds_dma_reset, asc_tcds_dma_intr, asc_tcds_dma_setup, asc_tcds_dma_go, asc_tcds_dma_stop, asc_tcds_dma_isactive, asc_tcds_clear_latched_intr, }; int asc_tcds_match(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { /* We always exist. */ return (1); } /* * Attach this instance, and then all the sub-devices */ void asc_tcds_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct tcdsdev_attach_args *tcdsdev = aux; struct asc_tcds_softc *asc = (void *)self; struct ncr53c9x_softc *sc = &asc->sc_ncr53c9x; /* * Set up glue for MI code early; we use some of it here. */ sc->sc_glue = &asc_tcds_glue; asc->sc_bst = tcdsdev->tcdsda_bst; asc->sc_bsh = tcdsdev->tcdsda_bsh; asc->sc_dma = tcdsdev->tcdsda_sc; sc->sc_id = tcdsdev->tcdsda_id; sc->sc_freq = tcdsdev->tcdsda_freq; /* gimme Mhz */ sc->sc_freq /= 1000000; asc->sc_dma->sc_asc = asc; /* XXX */ tcds_intr_establish(parent, tcdsdev->tcdsda_chip, (int (*) __P((void *)))ncr53c9x_intr, sc); /* * XXX More of this should be in ncr53c9x_attach(), but * XXX should we really poke around the chip that much in * XXX the MI code? Think about this more... */ /* * Set up static configuration info. */ sc->sc_cfg1 = sc->sc_id | NCRCFG1_PARENB; sc->sc_cfg2 = NCRCFG2_SCSI2; sc->sc_cfg3 = NCRCFG3_CDB; if (sc->sc_freq > 25) sc->sc_cfg3 |= NCRCFG3_FCLK; sc->sc_rev = tcdsdev->tcdsda_variant; if (tcdsdev->tcdsda_fast) sc->sc_features |= NCR_F_FASTSCSI; /* * XXX minsync and maxxfer _should_ be set up in MI code, * XXX but it appears to have some dependency on what sort * XXX of DMA we're hooked up to, etc. */ /* * This is the value used to start sync negotiations * Note that the NCR register "SYNCTP" is programmed * in "clocks per byte", and has a minimum value of 4. * The SCSI period used in negotiation is one-fourth * of the time (in nanoseconds) needed to transfer one byte. * Since the chip's clock is given in MHz, we have the following * formula: 4 * period = (1000 / freq) * 4 */ sc->sc_minsync = (1000 / sc->sc_freq) * tcdsdev->tcdsda_period / 4; sc->sc_maxxfer = 64 * 1024; /* Do the common parts of attachment. */ sc->sc_adapter.scsipi_cmd = ncr53c9x_scsi_cmd; sc->sc_adapter.scsipi_minphys = minphys; ncr53c9x_attach(sc, &asc_tcds_dev); } /* * Glue functions. */ u_char asc_tcds_read_reg(sc, reg) struct ncr53c9x_softc *sc; int reg; { struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc; u_char v; v = bus_space_read_4(asc->sc_bst, asc->sc_bsh, reg * sizeof(u_int32_t)) & 0xff; return (v); } void asc_tcds_write_reg(sc, reg, val) struct ncr53c9x_softc *sc; int reg; u_char val; { struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc; bus_space_write_4(asc->sc_bst, asc->sc_bsh, reg * sizeof(u_int32_t), val); } int asc_tcds_dma_isintr(sc) struct ncr53c9x_softc *sc; { struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc; return (tcds_dma_isintr(asc->sc_dma)); } void asc_tcds_dma_reset(sc) struct ncr53c9x_softc *sc; { struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc; tcds_dma_reset(asc->sc_dma); } int asc_tcds_dma_intr(sc) struct ncr53c9x_softc *sc; { struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc; return (tcds_dma_intr(asc->sc_dma)); } int asc_tcds_dma_setup(sc, addr, len, datain, dmasize) struct ncr53c9x_softc *sc; caddr_t *addr; size_t *len; int datain; size_t *dmasize; { struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc; return (tcds_dma_setup(asc->sc_dma, addr, len, datain, dmasize)); } void asc_tcds_dma_go(sc) struct ncr53c9x_softc *sc; { struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc; tcds_dma_go(asc->sc_dma); } void asc_tcds_dma_stop(sc) struct ncr53c9x_softc *sc; { #if 0 struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc; #endif /* * XXX STOP DMA HERE! */ } int asc_tcds_dma_isactive(sc) struct ncr53c9x_softc *sc; { struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc; return (tcds_dma_isactive(asc->sc_dma)); } void asc_tcds_clear_latched_intr(sc) struct ncr53c9x_softc *sc; { struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc; /* Clear the TCDS interrupt bit. */ (void)tcds_scsi_isintr(asc->sc_dma, 1); }