/* $NetBSD: cs80bus.c,v 1.17 2016/07/11 11:31:50 msaitoh Exp $ */ /*- * Copyright (c) 2001 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Gregory McGarry. * * 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. * * 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. */ #include __KERNEL_RCSID(0, "$NetBSD: cs80bus.c,v 1.17 2016/07/11 11:31:50 msaitoh Exp $"); #include #include #include #include #include #include #include #ifndef DEBUG #define DEBUG #endif #ifdef DEBUG int cs80busdebug = 0xff; #define DBG_FOLLOW 0x01 #define DBG_STATUS 0x02 #define DBG_FAIL 0x04 #define DPRINTF(mask, str) if (cs80busdebug & (mask)) printf str #else #define DPRINTF(mask, str) /* nothing */ #endif #include "locators.h" #define cs80buscf_slave cf_loc[CS80BUSCF_SLAVE] #define cs80buscf_punit cf_loc[CS80BUSCF_PUNIT] int cs80busmatch(device_t, cfdata_t, void *); void cs80busattach(device_t, device_t, void *); CFATTACH_DECL_NEW(cs80bus, sizeof(struct cs80bus_softc), cs80busmatch, cs80busattach, NULL, NULL); static int cs80bus_alloc(struct cs80bus_softc *, int, int); static int cs80bussearch(device_t, cfdata_t, const int *, void *); static int cs80busprint(void *, const char *); /* * HP's CS80/SS80 command set can be found on `newer' devices, while * the HP's Amigo command set is used on before-you-were-born * devices. Devices that respond to CS80/SS80 (and probably Amigo, too) * are tagged with a 16-bit ID. * * CS80/SS80 has a 2-level addressing scheme; slave, the analog * of a SCSI ID, and punit, the analog of a SCSI LUN. Unforunately, * IDs are on a per-slave basis; punits are often used for disk * drives that have an accompanying tape drive on the second punit. * * We treat CS80/SS80 as an indirect bus. However, since we are given * some ID information, it is unreasonable to disallow cloning of * CS80/SS80 devices. * * To deal with all of this, we use the semi-twisted scheme * in cs80bus_attach_children(). For each GPIB slave, we loop * through all of the possibly-configured children, allowing * them to modify the punit parameter (but NOT the slave!). * */ int cs80busmatch(device_t parent, cfdata_t match, void *aux) { return (1); } void cs80busattach(device_t parent, device_t self, void *aux) { struct cs80bus_softc *sc = device_private(self); struct gpib_attach_args *ga = aux; struct cs80bus_attach_args ca; int slave; u_int16_t id; printf("\n"); sc->sc_dev = self; sc->sc_ic = ga->ga_ic; for (slave = 0; slave < 8; slave++) { if (gpib_isalloc(device_private(device_parent(sc->sc_dev)), slave)) continue; if (gpibrecv(sc->sc_ic, GPIB_BROADCAST_ADDR, slave, &id, 2) != 2) continue; BE16TOH(id); DPRINTF(DBG_STATUS, ("cs80busattach: found id 0x%x\n", id)); if ((id & 0x200) == 0) continue; ca.ca_ic = sc->sc_ic; ca.ca_slave = slave; ca.ca_id = id; (void)config_search_ia(cs80bussearch, sc->sc_dev, "cs80bus", &ca); } } int cs80bussearch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) { struct cs80bus_softc *sc = device_private(parent); struct cs80bus_attach_args *ca = aux; /* * Set punit if operator specified one in the kernel * configuration file. */ if (cf->cs80buscf_punit != CS80BUSCF_PUNIT_DEFAULT && cf->cs80buscf_punit < CS80BUS_NPUNITS) ca->ca_punit = cf->cs80buscf_punit; else /* default punit */ ca->ca_punit = 0; DPRINTF(DBG_FOLLOW, ("cs80bussearch: id=0x%x slave=%d punit=%d\n", ca->ca_id, ca->ca_slave, ca->ca_punit)); if (config_match(parent, cf, ca) > 0) { DPRINTF(DBG_FOLLOW, ("cs80bussearch: got id=0x%x slave=%d punit %d\n", ca->ca_id, ca->ca_slave, ca->ca_punit)); /* * The device probe has succeeded, and filled in * the punit information. Make sure the configuration * allows for this slave/punit combination. */ if (cf->cs80buscf_slave != CS80BUSCF_SLAVE_DEFAULT && cf->cs80buscf_slave != ca->ca_slave) goto out; if (cf->cs80buscf_punit != CS80BUSCF_PUNIT_DEFAULT && cf->cs80buscf_punit != ca->ca_punit) goto out; /* * Allocate the device's address from the bus's * resource map. */ if (cs80bus_alloc(sc, ca->ca_slave, ca->ca_punit)) goto out; /* * This device is allowed; attach it. */ config_attach(parent, cf, ca, cs80busprint); } out: return (0); } int cs80busprint(void *aux, const char *pnp) { struct cs80bus_attach_args *ca = aux; printf(" slave %d punit %d", ca->ca_slave, ca->ca_punit); return (UNCONF); } static int cs80bus_alloc(struct cs80bus_softc *sc, int slave, int punit) { DPRINTF(DBG_FOLLOW, ("cs80bus_alloc: sc=%p\n", sc)); if (slave >= CS80BUS_NSLAVES || punit >= CS80BUS_NPUNITS) panic("cs80bus_alloc: device address out of range"); gpib_alloc(device_private(device_parent(sc->sc_dev)), slave); if (sc->sc_rmap[slave][punit] == 0) { sc->sc_rmap[slave][punit] = 1; return (0); } return (1); } /* * CS80/SS80 (secondary) command functions */ int cs80describe(void *v, int slave, int punit, struct cs80_description *csd) { struct cs80bus_softc *sc = v; struct cs80_describecmd desc; u_int8_t stat; DPRINTF(DBG_FOLLOW, ("cs80describe: sc=%p slave=%d\n", sc, slave)); /* * Note command is always issued to unit 0. */ desc.c_unit = CS80CMD_SUNIT(0); desc.c_vol = CS80CMD_SVOL(0); desc.c_cmd = CS80CMD_DESC; (void) gpibsend(sc->sc_ic, slave, CS80CMD_SCMD, &desc, sizeof(desc)); (void) gpibrecv(sc->sc_ic, slave, CS80CMD_EXEC, csd, sizeof(*csd)); (void) gpibrecv(sc->sc_ic, slave, CS80CMD_QSTAT, &stat, 1); if (stat != 0) { DPRINTF(DBG_FAIL, ("cs80describe: failed, stat=0x%x\n", stat)); return (1); } BE16TOH(csd->d_iuw); BE16TOH(csd->d_cmaxxfr); BE16TOH(csd->d_sectsize); BE16TOH(csd->d_blocktime); BE16TOH(csd->d_uavexfr); BE16TOH(csd->d_retry); BE16TOH(csd->d_access); BE32TOH(csd->d_maxcylhead); BE16TOH(csd->d_maxsect); BE16TOH(csd->d_maxvsecth); BE32TOH(csd->d_maxvsectl); return (0); } int cs80reset(void *v, int slave, int punit) { struct cs80bus_softc *sc = v; struct cs80_clearcmd clear; struct cs80_srcmd sr; struct cs80_ssmcmd ssm; DPRINTF(DBG_FOLLOW, ("cs80reset: sc=%p slave=%d punit=%d\n", sc, slave, punit)); clear.c_unit = CS80CMD_SUNIT(punit); clear.c_cmd = CS80CMD_CLEAR; if (cs80send(sc, slave, punit, CS80CMD_TCMD, &clear, sizeof(clear))) { DPRINTF(DBG_FAIL, ("cs80reset: CLEAR failed\n")); return (1); } sr.c_unit = CS80CMD_SUNIT(15); /* XXX */ sr.c_nop = CS80CMD_NOP; sr.c_cmd = CS80CMD_SREL; sr.c_param = 0xc0; /* XXX */ if (cs80send(sc, slave, punit, CS80CMD_SCMD, &sr, sizeof(sr))) { DPRINTF(DBG_FAIL, ("cs80reset: SREL failed\n")); return (1); } ssm.c_unit = CS80CMD_SUNIT(punit); ssm.c_cmd = CS80CMD_SSM; ssm.c_refm = htobe16(REF_MASK); ssm.c_fefm = htobe16(FEF_MASK); ssm.c_aefm = htobe16(AEF_MASK); ssm.c_iefm = htobe16(IEF_MASK); if (cs80send(sc, slave, punit, CS80CMD_SCMD, &ssm, sizeof(ssm))) { DPRINTF(DBG_FAIL, ("cs80reset: SSM failed\n")); return (1); } return (0); } int cs80status(void *v, int slave, int punit, struct cs80_stat *css) { struct cs80bus_softc *sc = v; struct cs80_statuscmd rs; u_int8_t stat; rs.c_unit = CS80CMD_SUNIT(punit); rs.c_sram = CS80CMD_SRAM; rs.c_param = 0; /* single vector (i.e. sector number) */ rs.c_cmd = CS80CMD_STATUS; memset((void *)css, 0, sizeof(*css)); (void) gpibsend(sc->sc_ic, slave, CS80CMD_SCMD, &rs, sizeof(rs)); (void) gpibrecv(sc->sc_ic, slave, CS80CMD_EXEC, css, sizeof(*css)); (void) gpibrecv(sc->sc_ic, slave, CS80CMD_QSTAT, &stat, 1); if (stat != 0) { DPRINTF(DBG_FAIL, ("cs80status: failed, stat=0x%x\n", stat)); return (1); } BE16TOH(css->c_ref); BE16TOH(css->c_fef); BE16TOH(css->c_aef); BE16TOH(css->c_ief); BE32TOH(css->c_blk); return (0); } int cs80setoptions(void *v, int slave, int punit, u_int8_t options) { struct cs80bus_softc *sc = v; struct cs80_soptcmd opt; opt.c_unit = CS80CMD_SUNIT(punit); opt.c_nop = CS80CMD_NOP; opt.c_opt = CS80CMD_SOPT; opt.c_param = options; if (cs80send(sc, slave, punit, CS80CMD_SCMD, &opt, sizeof(opt))) { DPRINTF(DBG_FAIL, ("cs80setoptions: failed\n")); return (1); } return (0); } int cs80send(void *v, int slave, int punit, int cmd, void *ptr, int cnt) { struct cs80bus_softc *sc = v; u_int8_t *buf = ptr; u_int8_t stat; DPRINTF(DBG_FOLLOW, ("cs80send: sc=%p slave=%d punit=%d cmd=%d ptr=%p cnt=%d\n", sc, slave, punit, cmd, buf, cnt)); if (gpibsend(sc->sc_ic, slave, cmd, buf, cnt) != cnt) { DPRINTF(DBG_FAIL, ("cs80send: SCMD failed\n")); return (1); } if (gpibswait(sc->sc_ic, slave)) { DPRINTF(DBG_FAIL, ("cs80send: wait failed\n")); return (1); } if (gpibrecv(sc->sc_ic, slave, CS80CMD_QSTAT, &stat, 1) != 1) { DPRINTF(DBG_FAIL, ("cs80send: QSTAT failed\n")); return (1); } if (stat != 0) { DPRINTF(DBG_FAIL, ("cs80send: failed, stat=0x%x\n", stat)); return (1); } return (0); }