/* $OpenBSD: sd_scsi.c,v 1.1 1999/07/25 07:09:19 csapuntz Exp $ */ /* $NetBSD: sd_scsi.c,v 1.8 1998/10/08 20:21:13 thorpej Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum. * * 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. */ /* * 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 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)); static void sd_scsibus_flush __P((struct sd_softc *, int)); const struct sd_ops sd_scsibus_ops = { sd_scsibus_get_parms, sd_scsibus_flush, }; static int sd_scsibus_mode_sense(sd, scsi_sense, page, flags) struct sd_softc *sd; struct sd_scsibus_mode_sense_data *scsi_sense; int page, flags; { struct scsi_mode_sense scsi_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(scsi_sense, sizeof(*scsi_sense)); bzero(&scsi_cmd, sizeof(scsi_cmd)); scsi_cmd.opcode = MODE_SENSE; scsi_cmd.page = page; scsi_cmd.length = 0x20; /* * If the command worked, use the results to fill out * the parameter structure */ return (scsi_scsi_cmd(sd->sc_link, (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd), (u_char *)scsi_sense, sizeof(*scsi_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 scsi_cmd; struct sd_scsibus_mode_sense_data scsi_sense; u_long sectors; int error; dp->blksize = 512; if ((sectors = scsi_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(&scsi_cmd, sizeof(scsi_cmd)); scsi_cmd.opcode = MODE_SENSE; scsi_cmd.page = 0x3f; /* all pages */ scsi_cmd.length = sizeof(struct scsi_mode_header) + sizeof(struct scsi_blk_desc); if ((error = scsi_scsi_cmd(sd->sc_link, (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd), (u_char *)&scsi_sense, sizeof(scsi_sense), SDRETRIES, 6000, NULL, flags | SCSI_DATA_IN)) != 0) return (SDGP_RESULT_OFFLINE); /* XXX? */ dp->blksize = _3btol(scsi_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 scsi_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, &scsi_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(scsi_sense.pages.rigid_geometry.ncyl), scsi_sense.pages.rigid_geometry.nheads, _2btol(scsi_sense.pages.rigid_geometry.st_cyl_wp), _2btol(scsi_sense.pages.rigid_geometry.st_cyl_rwc), _2btol(scsi_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 = scsi_sense.pages.rigid_geometry.nheads; dp->cyls = _3btol(scsi_sense.pages.rigid_geometry.ncyl); dp->blksize = _3btol(scsi_sense.blk_desc.blklen); if (dp->heads == 0 || dp->cyls == 0) goto fake_it; if (dp->blksize == 0) dp->blksize = 512; sectors = scsi_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, &scsi_sense, page = 5, flags)) == 0) { dp->heads = scsi_sense.pages.flex_geometry.nheads; dp->cyls = _2btol(scsi_sense.pages.flex_geometry.ncyl); dp->blksize = _3btol(scsi_sense.blk_desc.blklen); dp->sectors = scsi_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 = scsi_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_flush(sd, flags) struct sd_softc *sd; int flags; { struct scsi_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. * * Unless, that is, the device can't handle the SYNCHRONIZE CACHE * command, as indicated by our quirks flags. * * XXX What about older devices? */ if ((sc_link->scsi_version & SID_ANSII) >= 2 && (sc_link->quirks & SDEV_NOSYNCCACHE) == 0) { bzero(&sync_cmd, sizeof(sync_cmd)); sync_cmd.opcode = SYNCHRONIZE_CACHE; if (scsi_scsi_cmd(sc_link, (struct scsi_generic *)&sync_cmd, sizeof(sync_cmd), NULL, 0, SDRETRIES, 100000, NULL, flags|SCSI_IGNORE_ILLEGAL_REQUEST)) printf("%s: WARNING: cache synchronization failed\n", sd->sc_dev.dv_xname); else sd->flags |= SDF_FLUSHING; } }