/* $NetBSD: sd_scsi.c,v 1.2 1998/06/10 22:17:39 thorpej Exp $ */ /* * Copyright (c) 1994, 1995, 1997 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. */ /* * Originally written by Julian Elischer (julian@dialix.oz.au) * for TRW Financial Systems for use under the MACH(2.5) operating system. * * TRW Financial Systems, in accordance with their agreement with Carnegie * Mellon University, makes this software available to CMU to distribute * or use in any manner that they see fit as long as this message is kept with * the software. For this reason TFS also grants any other persons or * organisations permission to use or modify this software. * * TFS supplies this software to be publicly redistributed * on the understanding that TFS is not responsible for the correct * functioning of this software in any circumstances. * * Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992 */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef __BROKEN_INDIRECT_CONFIG int sd_scsibus_match __P((struct device *, void *, void *)); #else int sd_scsibus_match __P((struct device *, struct cfdata *, void *)); #endif void sd_scsibus_attach __P((struct device *, struct device *, void *)); struct cfattach sd_scsibus_ca = { sizeof(struct sd_softc), sd_scsibus_match, sd_scsibus_attach }; struct scsipi_inquiry_pattern sd_scsibus_patterns[] = { {T_DIRECT, T_FIXED, "", "", ""}, {T_DIRECT, T_REMOV, "", "", ""}, {T_OPTICAL, T_FIXED, "", "", ""}, {T_OPTICAL, T_REMOV, "", "", ""}, }; struct sd_scsibus_mode_sense_data { struct scsi_mode_header header; struct scsi_blk_desc blk_desc; union scsi_disk_pages pages; }; static int sd_scsibus_mode_sense __P((struct sd_softc *, struct sd_scsibus_mode_sense_data *, int, int)); static int sd_scsibus_get_parms __P((struct sd_softc *, struct disk_parms *, int)); static int sd_scsibus_get_optparms __P((struct sd_softc *, struct disk_parms *, int)); const struct sd_ops sd_scsibus_ops = { sd_scsibus_get_parms, }; static void sd_scsibus_shutdown __P((void *)); int sd_scsibus_match(parent, match, aux) struct device *parent; #ifdef __BROKEN_INDIRECT_CONFIG void *match; #else struct cfdata *match; #endif void *aux; { struct scsipibus_attach_args *sa = aux; int priority; if (sa->sa_sc_link->type != BUS_SCSI) return (0); (void)scsipi_inqmatch(&sa->sa_inqbuf, (caddr_t)sd_scsibus_patterns, sizeof(sd_scsibus_patterns) / sizeof(sd_scsibus_patterns[0]), sizeof(sd_scsibus_patterns[0]), &priority); return (priority); } /* * The routine called by the low level scsi routine when it discovers * a device suitable for this driver. */ void sd_scsibus_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct sd_softc *sd = (void *)self; struct scsipibus_attach_args *sa = aux; struct scsipi_link *sc_link = sa->sa_sc_link; SC_DEBUG(sc_link, SDEV_DB2, ("cd_scsibus_attach: ")); sd->type = (sa->sa_inqbuf.type & SID_TYPE); /* * Note if this device is ancient. This is used in sdminphys(). */ if ((sa->scsipi_info.scsi_version & SID_ANSII) == 0) sd->flags |= SDF_ANCIENT; sdattach(parent, sd, sc_link, &sd_scsibus_ops); /* * Establish a shutdown hook so that we can ensure that * our data has actually made it onto the platter at * shutdown time. Note that this relies on the fact * that the shutdown hook code puts us at the head of * the list (thus guaranteeing that our hook runs before * our ancestors'). */ if ((sd->sc_sdhook = shutdownhook_establish(sd_scsibus_shutdown, sd)) == NULL) printf("%s: WARNING: unable to establish shutdown hook\n", sd->sc_dev.dv_xname); } static int sd_scsibus_mode_sense(sd, scsipi_sense, page, flags) struct sd_softc *sd; struct sd_scsibus_mode_sense_data *scsipi_sense; int page, flags; { struct scsi_mode_sense scsipi_cmd; /* * Make sure the sense buffer is clean before we do * the mode sense, so that checks for bogus values of * 0 will work in case the mode sense fails. */ bzero(scsipi_sense, sizeof(*scsipi_sense)); bzero(&scsipi_cmd, sizeof(scsipi_cmd)); scsipi_cmd.opcode = SCSI_MODE_SENSE; scsipi_cmd.page = page; scsipi_cmd.length = 0x20; /* * If the command worked, use the results to fill out * the parameter structure */ return (scsipi_command(sd->sc_link, (struct scsipi_generic *)&scsipi_cmd, sizeof(scsipi_cmd), (u_char *)scsipi_sense, sizeof(*scsipi_sense), SDRETRIES, 6000, NULL, flags | SCSI_DATA_IN | SCSI_SILENT)); } static int sd_scsibus_get_optparms(sd, dp, flags) struct sd_softc *sd; struct disk_parms *dp; int flags; { struct scsi_mode_sense scsipi_cmd; struct sd_scsibus_mode_sense_data scsipi_sense; u_long sectors; int error; dp->blksize = 512; if ((sectors = scsipi_size(sd->sc_link, flags)) == 0) return (SDGP_RESULT_OFFLINE); /* XXX? */ /* XXX * It is better to get the following params from the * mode sense page 6 only (optical device parameter page). * However, there are stupid optical devices which does NOT * support the page 6. Ghaa.... */ bzero(&scsipi_cmd, sizeof(scsipi_cmd)); scsipi_cmd.opcode = SCSI_MODE_SENSE; scsipi_cmd.page = 0x3f; /* all pages */ scsipi_cmd.length = sizeof(struct scsi_mode_header) + sizeof(struct scsi_blk_desc); if ((error = scsipi_command(sd->sc_link, (struct scsipi_generic *)&scsipi_cmd, sizeof(scsipi_cmd), (u_char *)&scsipi_sense, sizeof(scsipi_sense), SDRETRIES, 6000, NULL, flags | SCSI_DATA_IN)) != 0) return (SDGP_RESULT_OFFLINE); /* XXX? */ dp->blksize = _3btol(scsipi_sense.blk_desc.blklen); if (dp->blksize == 0) dp->blksize = 512; /* * Create a pseudo-geometry. */ dp->heads = 64; dp->sectors = 32; dp->cyls = sectors / (dp->heads * dp->sectors); dp->disksize = sectors; return (SDGP_RESULT_OK); } /* * Get the scsi driver to send a full inquiry to the * device and use the * results to fill out the disk parameter structure. */ static int sd_scsibus_get_parms(sd, dp, flags) struct sd_softc *sd; struct disk_parms *dp; int flags; { struct sd_scsibus_mode_sense_data scsipi_sense; u_long sectors; int page; int error; dp->rot_rate = 3600; /* XXX any way of getting this? */ /* * If offline, the SDEV_MEDIA_LOADED flag will be * cleared by the caller if necessary. */ if (sd->type == T_OPTICAL) return (sd_scsibus_get_optparms(sd, dp, flags)); if ((error = sd_scsibus_mode_sense(sd, &scsipi_sense, page = 4, flags)) == 0) { SC_DEBUG(sd->sc_link, SDEV_DB3, ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", _3btol(scsipi_sense.pages.rigid_geometry.ncyl), scsipi_sense.pages.rigid_geometry.nheads, _2btol(scsipi_sense.pages.rigid_geometry.st_cyl_wp), _2btol(scsipi_sense.pages.rigid_geometry.st_cyl_rwc), _2btol(scsipi_sense.pages.rigid_geometry.land_zone))); /* * KLUDGE!! (for zone recorded disks) * give a number of sectors so that sec * trks * cyls * is <= disk_size * can lead to wasted space! THINK ABOUT THIS ! */ dp->heads = scsipi_sense.pages.rigid_geometry.nheads; dp->cyls = _3btol(scsipi_sense.pages.rigid_geometry.ncyl); dp->blksize = _3btol(scsipi_sense.blk_desc.blklen); if (dp->heads == 0 || dp->cyls == 0) goto fake_it; if (dp->blksize == 0) dp->blksize = 512; sectors = scsipi_size(sd->sc_link, flags); dp->disksize = sectors; sectors /= (dp->heads * dp->cyls); dp->sectors = sectors; /* XXX dubious on SCSI */ return (SDGP_RESULT_OK); } if ((error = sd_scsibus_mode_sense(sd, &scsipi_sense, page = 5, flags)) == 0) { dp->heads = scsipi_sense.pages.flex_geometry.nheads; dp->cyls = _2btol(scsipi_sense.pages.flex_geometry.ncyl); dp->blksize = _3btol(scsipi_sense.blk_desc.blklen); dp->sectors = scsipi_sense.pages.flex_geometry.ph_sec_tr; dp->disksize = dp->heads * dp->cyls * dp->sectors; if (dp->disksize == 0) goto fake_it; if (dp->blksize == 0) dp->blksize = 512; return (SDGP_RESULT_OK); } fake_it: if ((sd->sc_link->quirks & SDEV_NOMODESENSE) == 0) { if (error == 0) printf("%s: mode sense (%d) returned nonsense", sd->sc_dev.dv_xname, page); else printf("%s: could not mode sense (4/5)", sd->sc_dev.dv_xname); printf("; using fictitious geometry\n"); } /* * use adaptec standard fictitious geometry * this depends on which controller (e.g. 1542C is * different. but we have to put SOMETHING here..) */ sectors = scsipi_size(sd->sc_link, flags); dp->heads = 64; dp->sectors = 32; dp->cyls = sectors / (64 * 32); dp->blksize = 512; dp->disksize = sectors; return (SDGP_RESULT_OK); } static void sd_scsibus_shutdown(arg) void *arg; { struct sd_softc *sd = arg; struct scsipi_link *sc_link = sd->sc_link; struct scsi_synchronize_cache sync_cmd; /* * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. * We issue with address 0 length 0, which should be * interpreted by the device as "all remaining blocks * starting at address 0". We ignore ILLEGAL REQUEST * in the event that the command is not supported by * the device, and poll for completion so that we know * that the cache has actually been flushed. * * XXX What about older devices? */ if ((sc_link->scsipi_scsi.scsi_version & SID_ANSII) >= 2) { bzero(&sync_cmd, sizeof(sync_cmd)); sync_cmd.opcode = SCSI_SYNCHRONIZE_CACHE; if (scsipi_command(sc_link, (struct scsipi_generic *)&sync_cmd, sizeof(sync_cmd), NULL, 0, SDRETRIES, 100000, NULL, SCSI_POLL|SCSI_IGNORE_ILLEGAL_REQUEST)) printf("%s: WARNING: cache synchronization failed\n", sd->sc_dev.dv_xname); } }