/* * Written by Julian Elischer (julian@tfs.com) * 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@tfs.com) Sept 1992 * * New configuration setup: dufault@hda.com * * $Id: scsiconf.c,v 1.54 1996/02/17 23:59:24 se Exp $ */ #include #include #include #include #include #include #include #include #include #include /* XXX For bootverbose (funny place) */ #include "scbus.h" #include "sd.h" #include "st.h" #include "cd.h" #include "ch.h" #include "od.h" #include "worm.h" #include "su.h" #include "sctarg.h" #include #include static struct extend_array *extend_new __P((void)); static void extend_release __P((struct extend_array *ea, int index)); static void *extend_set __P((struct extend_array *ea, int index, void *value)); /* * XXX SCSI_DEVICE_ENTRIES() generates extern switches but it should * generate static switches except for this. Separate macros are * probably required for the extern and static parts. */ extern struct scsi_device uk_switch; /*********************************************************************** * Extensible arrays: Use a realloc like implementation to permit * the arrays to be extend. These are set up to be moved out * of this file if needed elsewhere. */ struct extend_array { int nelem; void **ps; }; static void make_readable __P((char *to, char *from, size_t n)); static int match __P((char *pattern, char *name)); static int scsi_bus_conf __P((struct scsi_link *sc_link_proto)); static void * extend_alloc(size_t s) { void *p = malloc(s, M_DEVBUF, M_NOWAIT); if (!p) panic("extend_alloc: malloc failed."); return p; } static void extend_free(void *p) { free(p, M_DEVBUF); } /* EXTEND_CHUNK: Number of extend slots to allocate whenever we need a new * one. */ #ifndef EXTEND_CHUNK #define EXTEND_CHUNK 8 #endif static struct extend_array * extend_new(void) { struct extend_array *p = extend_alloc(sizeof(*p)); if (p) { p->nelem = 0; p->ps = 0; } return p; } static void * extend_set(struct extend_array *ea, int index, void *value) { if (index >= ea->nelem) { void **space; space = extend_alloc(sizeof(void *) * (index + EXTEND_CHUNK)); bzero(space, sizeof(void *) * (index + EXTEND_CHUNK)); /* Make sure we have something to copy before we copy it */ if (ea->nelem) { bcopy(ea->ps, space, sizeof(void *) * ea->nelem); extend_free(ea->ps); } ea->ps = space; ea->nelem = index + EXTEND_CHUNK; } if (ea->ps[index]) { printf("extend_set: entry %d already has storage.\n", index); return 0; } else ea->ps[index] = value; return value; } void * extend_get(struct extend_array *ea, int index) { if (ea == NULL || index >= ea->nelem || index < 0) return NULL; return ea->ps[index]; } static void extend_release(struct extend_array *ea, int index) { void *p = extend_get(ea, index); if (p) { ea->ps[index] = 0; } } /*********************************************************************** * This extend_array holds an array of "scsibus_data" pointers. * One of these is allocated and filled in for each scsi bus. * it holds pointers to allow the scsi bus to get to the driver * that is running each LUN on the bus * it also has a template entry which is the prototype struct * supplied by the adapter driver, this is used to initialise * the others, before they have the rest of the fields filled in */ static struct extend_array *scbusses; /* * The structure of known drivers for autoconfiguration */ struct scsidevs { u_int32 type; u_int32 driver; /* normally the same as type */ boolean removable; char *manufacturer; char *model; char *version; char *devname; char flags; /* 1 show my comparisons during boot(debug) */ u_int16 quirks; void *devmodes; }; #define SC_SHOWME 0x01 #define SC_ONE_LU 0x00 #define SC_MORE_LUS 0x02 static struct scsidevs unknowndev = { T_UNKNOWN, T_UNKNOWN, 0, "*", "*", "*", "uk", SC_MORE_LUS }; static st_modes mode_tandberg3600 = { {0, 0, 0}, /* minor 0,1,2,3 */ {0, ST_Q_FORCE_VAR_MODE, QIC_525}, /* minor 4,5,6,7 */ {0, 0, QIC_150}, /* minor 8,9,10,11 */ {0, 0, QIC_120} /* minor 12,13,14,15 */ }; static st_modes mode_tandberg4200 = { {0, 0, 0}, /* minor 0,1,2,3 */ {0, ST_Q_FORCE_VAR_MODE, 0}, /* minor 4,5,6,7 */ {0, 0, QIC_150}, /* minor 8,9,10,11 */ {0, 0, QIC_120} /* minor 12,13,14,15 */ }; static st_modes mode_archive2525 = { {0, ST_Q_SNS_HLP, 0}, /* minor 0,1,2,3 */ {0, ST_Q_SNS_HLP, QIC_525}, /* minor 4,5,6,7 */ {0, 0, QIC_150}, /* minor 8,9,10,11 */ {0, 0, QIC_120} /* minor 12,13,14,15 */ }; static st_modes mode_archive150 = { {0, 0, 0}, /* minor 0,1,2,3 */ {0, 0, QIC_150}, /* minor 4,5,6,7 */ {0, 0, QIC_120}, /* minor 8,9,10,11 */ {0, 0, QIC_24} /* minor 12,13,14,15 */ }; static st_modes mode_wangtek5525 = { {0, 0, 0}, /* minor 0,1,2,3 */ {0, ST_Q_BLKSIZ, QIC_525}, /* minor 4,5,6,7 */ {0, 0, QIC_150}, /* minor 8,9,10,11 */ {0, 0, QIC_120} /* minor 12,13,14,15 */ }; static st_modes mode_wangdat1300 = { {0, 0, 0}, /* minor 0,1,2,3 */ {512, ST_Q_FORCE_FIXED_MODE, DDS}, /* minor 4,5,6,7 */ {1024, ST_Q_FORCE_FIXED_MODE, DDS}, /* minor 8,9,10,11 */ {0, ST_Q_FORCE_VAR_MODE, DDS} /* minor 12,13,14,15 */ }; static st_modes mode_unktape = { {0, 0, 0}, /* minor 0,1,2,3 */ {512, ST_Q_FORCE_FIXED_MODE, QIC_24}, /* minor 4,5,6,7 */ {0, ST_Q_FORCE_VAR_MODE, HALFINCH_1600}, /* minor 8,9,10,11 */ {0, ST_Q_FORCE_VAR_MODE, HALFINCH_6250} /* minor 12,13,14,15 */ }; static struct scsidevs knowndevs[] = { /* od's must be probed before sd's since some of them identify as T_DIRECT */ #if NOD > 0 { T_OPTICAL, T_OPTICAL, T_REMOV, "MATSHITA", "PD-1 LF-1000", "*", "od", SC_MORE_LUS }, { T_DIRECT, T_OPTICAL, T_REMOV, "SONY", "SMO-*", "*", "od", SC_MORE_LUS }, { T_OPTICAL, T_OPTICAL, T_REMOV, "*", "*", "*", "od", SC_ONE_LU }, #endif /* NOD */ #if NSD > 0 { T_DIRECT, T_DIRECT, T_FIXED, "EMULEX", "MD21*" , "*", "sd", SC_MORE_LUS }, { T_DIRECT, T_DIRECT, T_FIXED, "*", "*", "*", "sd", SC_ONE_LU }, #endif /* NSD */ #if NST > 0 { T_SEQUENTIAL, T_SEQUENTIAL, T_REMOV, "TANDBERG", " TDC 3600", "*", "st", SC_ONE_LU, ST_Q_NEEDS_PAGE_0, mode_tandberg3600 }, { T_SEQUENTIAL, T_SEQUENTIAL, T_REMOV, "TANDBERG", " TDC 42*", "*", "st", SC_ONE_LU, ST_Q_SNS_HLP|ST_Q_NO_1024, mode_tandberg4200 }, { T_SEQUENTIAL, T_SEQUENTIAL, T_REMOV, "ARCHIVE", "VIPER 2525*", "-005", "st", SC_ONE_LU, 0, mode_archive2525 }, { T_SEQUENTIAL, T_SEQUENTIAL, T_REMOV, "ARCHIVE", "VIPER 150", "*", "st", SC_ONE_LU, ST_Q_NEEDS_PAGE_0, mode_archive150 }, { T_SEQUENTIAL, T_SEQUENTIAL, T_REMOV, "WANGTEK", "5525ES*", "*", "st", SC_ONE_LU, 0, mode_wangtek5525 }, { T_SEQUENTIAL, T_SEQUENTIAL, T_REMOV, "WangDAT", "Model 1300", "*", "st", SC_ONE_LU, 0, mode_wangdat1300 }, { T_SEQUENTIAL, T_SEQUENTIAL, T_REMOV, "*", "*", "*", "st", SC_ONE_LU, 0, mode_unktape }, #endif /* NST */ #if NCH > 0 { T_CHANGER, T_CHANGER, T_REMOV, "*", "*", "*", "ch", SC_ONE_LU }, #endif /* NCH */ #if NCD > 0 #ifndef UKTEST /* make cdroms unrecognised to test the uk driver */ /* * CDU-8003A aka Apple CDROM-300. */ { T_READONLY, T_READONLY, T_REMOV, "SONY", "CD-ROM CDU-8003A", "1.9a", "cd", SC_ONE_LU }, { T_READONLY, T_READONLY, T_REMOV, "SONY", "CD-ROM CDU-8012", "3.1a", "cd", SC_ONE_LU }, { T_READONLY, T_READONLY, T_REMOV, "PIONEER", "CD-ROM DRM-6??*" ,"*", "cd", SC_MORE_LUS, CD_Q_NO_TOUCH }, { T_READONLY, T_READONLY, T_REMOV, "NRC", "MBR-7*" ,"*", "cd", SC_MORE_LUS }, { T_READONLY, T_READONLY, T_REMOV, "CHINON", "CD-ROM CDS-535","*", "cd", SC_ONE_LU }, /* * Note: My drive with v1.0 firmware "forgets" to generate scsi parity * when answering probes.. :-( EVIL!! You need to disable scsi parity * checking in order to find out that it answers to all 7 LUNS. :-( * -Peter */ { T_READONLY, T_READONLY, T_REMOV, "NEC", "CD-ROM DRIVE:55","*", "cd", SC_ONE_LU }, /* * Same with the OEM version of this drive (1.0 firmware). * -Paul */ { T_READONLY, T_READONLY, T_REMOV, "NEC", "CD-ROM DRIVE:210","*", "cd", SC_ONE_LU }, /* * Doobe-doo-be doooo * -Mary */ #endif /* !UKTEST */ #endif /* NCD */ #if NWORM > 0 { T_READONLY, T_WORM, T_REMOV, "HP", "C4324/C4325", "*", "worm", SC_ONE_LU }, /* * The Plasmon's are dual-faced: they appear as T_WORM if the * drive is empty, or a CD-R medium is in the drive, and they * announce theirselves as T_READONLY if a CD-ROM (or fixated * CD-R) is there. This record catches the latter case, while * the former one falls under the terms of the generic T_WORM * below. */ { T_READONLY, T_WORM, T_REMOV, "PLASMON", "RF41*", "*", "worm", SC_ONE_LU }, { T_WORM, T_WORM, T_REMOV, "*", "*", "*", "worm", SC_ONE_LU }, #endif /* NWORM */ { 0 } }; /* * Declarations */ static struct scsidevs *scsi_probedev __P((struct scsi_link *sc_link, boolean *maybe_more, int *type_p)); static struct scsidevs *scsi_selectdev __P((u_int32 qualifier, u_int32 type, boolean remov, char *manu, char *model, char *rev)); /* XXX dufault@hda.com * This scsi_device doesn't have the scsi_data_size. * This is used during probe. */ static struct scsi_device probe_switch = { NULL, NULL, NULL, NULL, "probe", 0, {0, 0}, NULL, 0 }; /* * XXX * This is BOGUS. * We do this because it was easier than adding the requisite information * to the scsi_link structure and modifying everything to use that. * Someday, we will do just that, and users will be able to nail down their * preferred SCSI ids. * */ struct kern_devconf kdc_scbus0 = { 0, 0, 0, /* filled in by dev_attach */ "scbus", 0, MDDC_SCBUS, 0, 0, 0, 0, /* no external data */ 0, /* no parent */ 0, /* no parentdata */ DC_BUSY, /* busses are always busy */ "SCSI subsystem" }; static int free_bus; /* First bus not wired down */ static struct scsi_device *device_list; static int next_free_type = T_NTYPES; /* Register new functions at the head of the list. That allows * you to replace a standard driver with a new one. * * You can't register the exact device (the same in memory structure) * more than once - the list links are part of the structure. That is * prevented. * * Custom devices should always be registered as type "-1". Then * the next available type number will be allocated for it. * * Be careful not to register a type as 0 unless you really mean to * replace the disk driver. * * This is usually called only by the "device_init" function generated * automatically in the SCSI_DEVICE_ENTRIES macro. */ void scsi_device_register(struct scsi_device *sd) { /* Not only is it pointless to add the same device more than once * but it will also screw up the list. */ struct scsi_device *is_there; for (is_there = device_list; is_there; is_there = is_there->next) if (is_there == sd) return; if (sd->type == -1) sd->type = next_free_type++; sd->next = device_list; device_list = sd; if (sd->links == 0) sd->links = extend_new(); } static struct scsi_device * scsi_device_lookup(int type) { struct scsi_device *sd; for (sd = device_list; sd; sd = sd->next) if (sd->type == type) return sd; return &uk_switch; } static struct scsi_device * scsi_device_lookup_by_name(char *name) { struct scsi_device *sd; for (sd = device_list; sd; sd = sd->next) if (strcmp(sd->name, name) == 0) return sd; return &uk_switch; } /* Macro that lets us know something is specified. */ #define IS_SPECIFIED(ARG) (ARG != SCCONF_UNSPEC && ARG != SCCONF_ANY) /* scsi_init: Do all the one time processing. This initializes the * type drivers and initializes the configuration. */ static void scsi_init(void) { static int done = 0; if(!done) { int i; done = 1; scbusses = extend_new(); dev_attach(&kdc_scbus0); /* First call all type initialization functions. */ ukinit(); /* We always have the unknown device. */ for (i = 0; scsi_tinit[i]; i++) (*scsi_tinit[i])(); /* Lowest free bus for auto-configure is one * more than the first one not * specified in config: */ for (i = 0; scsi_cinit[i].driver; i++) if (IS_SPECIFIED(scsi_cinit[i].scbus) && free_bus <= scsi_cinit[i].scbus) free_bus = scsi_cinit[i].scbus + 1; /* Lowest free unit for each type for auto-configure is one * more than the first one not specified in the config file: */ for (i = 0; scsi_dinit[i].name; i++) { struct scsi_device_config *sdc = scsi_dinit + i; struct scsi_device *sd = scsi_device_lookup_by_name(sdc->name); /* This is a little tricky: We don't want "sd 4" to match as * a wired down device, but we do want "sd 4 target 5" or * even "sd 4 scbus 1" to match. */ if (IS_SPECIFIED(sdc->unit) && (IS_SPECIFIED(sdc->target) || IS_SPECIFIED(sdc->cunit)) && sd->free_unit <= sdc->unit) sd->free_unit = sdc->unit + 1; } } } /* scsi_bus_conf: Figure out which bus this is. If it is wired in config * use that. Otherwise use the next free one. */ static int scsi_bus_conf(sc_link_proto) struct scsi_link *sc_link_proto; { int i; int bus; /* Which bus is this? Try to find a match in the "scsi_cinit" * table. If it isn't wired down auto-configure it at the * next available bus. */ bus = SCCONF_UNSPEC; for (i = 0; scsi_cinit[i].driver; i++) { if (IS_SPECIFIED(scsi_cinit[i].scbus)) { if (!strcmp(sc_link_proto->adapter->name, scsi_cinit[i].driver) &&(sc_link_proto->adapter_unit == scsi_cinit[i].unit)) { if (IS_SPECIFIED(scsi_cinit[i].bus)) { if (sc_link_proto->adapter_bus==scsi_cinit[i].bus){ bus = scsi_cinit[i].scbus; break; } } else if (sc_link_proto->adapter_bus == 0) { /* Backwards compatibility for single bus cards */ bus = scsi_cinit[i].scbus; break; } else { printf("Ambiguous scbus configuration for %s%d " "bus %d, cannot wire down. The kernel " "config entry for scbus%d should specify " "a controller bus.\n" "Scbus will be assigned dynamically.\n", sc_link_proto->adapter->name, sc_link_proto->adapter_unit, sc_link_proto->adapter_bus, sc_link_proto->adapter_bus ); break; } } } } if (bus == SCCONF_UNSPEC) bus = free_bus++; else if (bootverbose) printf("Choosing drivers for scbus configured at %d\n", bus); return bus; } /* scsi_assign_unit: Look through the structure generated by config. * See if there is a fixed assignment for this unit. If there isn't, * assign the next free unit. */ static int scsi_assign_unit(struct scsi_link *sc_link) { int i; int found; found = 0; for (i = 0; scsi_dinit[i].name; i++) { if ((strcmp(sc_link->device->name, scsi_dinit[i].name) == 0) && sc_link->target == scsi_dinit[i].target && ( (sc_link->lun == scsi_dinit[i].lun) || (sc_link->lun == 0 && scsi_dinit[i].lun == SCCONF_UNSPEC) ) && sc_link->scsibus == scsi_dinit[i].cunit) { sc_link->dev_unit = scsi_dinit[i].unit; found = 1; if (bootverbose) printf("%s is configured at %d\n", sc_link->device->name, sc_link->dev_unit); break; } } if (!found) sc_link->dev_unit = sc_link->device->free_unit++; return sc_link->dev_unit; } #if NSCTARG > 0 /* The SCSI target configuration is simpler. If an entry is present * we just return the bus, target and lun for that unit. */ static void scsi_sctarg_lookup(char *name, int unit, int *target, int *lun, int *bus) { int i; *bus = SCCONF_UNSPEC; *target = SCCONF_UNSPEC; *lun = SCCONF_UNSPEC; for (i = 0; scsi_dinit[i].name; i++) { if ((strcmp(name, scsi_dinit[i].name) == 0) && unit == scsi_dinit[i].unit) { *bus = scsi_dinit[i].cunit; *target = scsi_dinit[i].target; *lun = scsi_dinit[i].lun; } } } #endif /* NSCTARG > 0 */ void scsi_configure_start(void) { scsi_init(); } #if NSCTARG > 0 static errval scsi_attach_sctarg __P((void)); #endif void scsi_configure_finish(void) { #if NSCTARG > 0 scsi_attach_sctarg(); #endif } /* * scsi_attachdevs is the routine called by the adapter boards * to get all their devices configured in. */ void scsi_attachdevs(scbus) struct scsibus_data *scbus; { int scsibus; struct scsi_link *sc_link_proto = scbus->adapter_link; if ( (scsibus = scsi_bus_conf(sc_link_proto)) == -1) { return; } /* * if the adapter didn't give us this, set a default * (compatibility with old adapter drivers) */ if(!(sc_link_proto->opennings)) { sc_link_proto->opennings = 1; } sc_link_proto->scsibus = scsibus; /* * Allocate our target-lun space. */ scbus->sc_link = (struct scsi_link *(*)[][8])malloc( sizeof(struct scsi_link *[scbus->maxtarg + 1][8]), M_TEMP, M_NOWAIT); if(scbus == 0 || scbus->sc_link == 0 || extend_set(scbusses, scsibus, scbus) == 0) { panic("scsi_attachdevs: malloc"); } bzero(scbus->sc_link, sizeof(struct scsi_link*[scbus->maxtarg + 1][8])); #if defined(SCSI_DELAY) && SCSI_DELAY > 2 printf("%s%d waiting for scsi devices to settle\n", sc_link_proto->adapter->name, sc_link_proto->adapter_unit); #else /* SCSI_DELAY > 2 */ #undef SCSI_DELAY #define SCSI_DELAY 2 #endif /* SCSI_DELAY */ DELAY(1000000 * SCSI_DELAY); scsi_probe_bus(scsibus,-1,-1); } /* * Probe the requested scsi bus. It must be already set up. * -1 requests all set up scsi busses. * targ and lun optionally narrow the search if not -1 */ errval scsi_probe_busses(int bus, int targ, int lun) { if (bus == -1) { for(bus = 0; bus < scbusses->nelem; bus++) { scsi_probe_bus(bus, targ, lun); } return 0; } else { return scsi_probe_bus(bus, targ, lun); } } /* scsi_alloc_unit: Register a scsi_data pointer for a given * unit in a given scsi_device structure. * * XXX dufault@hda.com: I still don't like the way this reallocs stuff - * but at least now it is collected in one place instead of existing * in multiple type drivers. I'd like it better if we had it do a * second pass after it knew the sizes of everything and set up everything * at once. */ static int scsi_alloc_unit(struct scsi_link *sc_link) { u_int32 unit; struct scsi_data *sd; struct scsi_device *dsw; unit = sc_link->dev_unit; dsw = sc_link->device; /* * allocate the per unit data area */ if (dsw->sizeof_scsi_data) { sd = malloc(dsw->sizeof_scsi_data, M_DEVBUF, M_NOWAIT); if (!sd) { printf("%s%ld: malloc failed for scsi_data\n", sc_link->device->name, unit); return 0; } bzero(sd, dsw->sizeof_scsi_data); } else sd = 0; sc_link->sd = sd; if (extend_set(dsw->links, unit, (void *)sc_link) == 0) { printf("%s%ld: Can't store link pointer.\n", sc_link->device->name, unit); free(sd, M_DEVBUF); return 0; } return 1; } static void scsi_free_unit(struct scsi_link *sc_link) { if (sc_link->sd) { free(sc_link->sd, M_DEVBUF); sc_link->sd = 0; } extend_release(sc_link->device->links, sc_link->dev_unit); } #if NSCTARG > 0 /* XXX: It is a bug that the sc_link has this information * about the adapter in it. The sc_link should refer to * a structure that is host adpater specific. That will also * pull all knowledge of an sc_link out of the adapter drivers. */ errval scsi_set_bus(int bus, struct scsi_link *sc_link) { struct scsi_link *ad_link; struct scsibus_data *scsibus_data; if (bus < 0 || bus > scbusses->nelem) { return ENXIO; } scsibus_data = (struct scsibus_data *)extend_get(scbusses, bus); if(!scsibus_data) { return ENXIO; } ad_link = scsibus_data->adapter_link; sc_link->adapter_unit = ad_link->adapter_unit; sc_link->adapter_targ = ad_link->adapter_targ; sc_link->adapter = ad_link->adapter; sc_link->device = ad_link->device; sc_link->flags = ad_link->flags; return 0; } /* * Allocate and attach as many SCSI target devices as configured. * There are two ways that you can configure the target device: * 1. In the configuration file. That is handled here. * 2. Via the minor number. That takes precedence over the config file. */ static errval scsi_attach_sctarg() { struct scsi_link *sc_link = NULL; int dev_unit; struct scsi_device *sctarg = scsi_device_lookup(T_TARGET); if (sctarg == 0) { return ENXIO; } for (dev_unit = 0; dev_unit < NSCTARG; dev_unit++) { int target, lun, bus; /* If we don't have a link block allocate one. */ if (!sc_link) { sc_link = malloc(sizeof(*sc_link), M_TEMP, M_NOWAIT); } scsi_sctarg_lookup(sctarg->name, dev_unit, &target, &lun, &bus); if (IS_SPECIFIED(bus)) { struct scsibus_data *scsibus_data; if (bus < 0 || bus > scbusses->nelem) { printf("%s%d: configured on illegal bus %d.\n", sctarg->name, dev_unit, bus); continue; } scsibus_data = (struct scsibus_data *)extend_get(scbusses, bus); if(!scsibus_data) { printf("%s%d: no bus %d.\n", sctarg->name, dev_unit, bus); continue; } *sc_link = *scsibus_data->adapter_link; /* struct copy */ sc_link->target = target; sc_link->lun = lun; } else { /* This will be configured in the open routine. */ sc_link->scsibus = SCCONF_UNSPEC; sc_link->target = SCCONF_UNSPEC; sc_link->lun = SCCONF_UNSPEC; } sc_link->quirks = 0; sc_link->device = sctarg; sc_link->dev_unit = dev_unit; if (scsi_alloc_unit(sc_link)) { if (scsi_device_attach(sc_link) == 0) { sc_link = NULL; /* it's been used */ } else scsi_free_unit(sc_link); } } if (sc_link) { free(sc_link, M_TEMP); } return 0; } #endif /* NSCTARG > 0 */ /* * Allocate a scsibus_data structure * The target/lun area is dynamically allocated in scsi_attachdevs after * the controller driver has a chance to update the maxtarg field. */ struct scsibus_data* scsi_alloc_bus() { struct scsibus_data *scbus; /* * Prepare the scsibus_data area for the upperlevel * scsi code. */ scbus = malloc(sizeof(struct scsibus_data), M_TEMP, M_NOWAIT); if(!scbus) { printf("scsi_alloc_bus: - cannot malloc!\n"); return NULL; } bzero(scbus, sizeof(struct scsibus_data)); /* Setup the defaults */ scbus->maxtarg = 7; scbus->maxlun = 7; return scbus; } /* * Probe the requested scsi bus. It must be already set up. * targ and lun optionally narrow the search if not -1 */ errval scsi_probe_bus(int bus, int targ, int lun) { struct scsibus_data *scsibus_data ; int maxtarg,mintarg,maxlun,minlun; struct scsi_link *sc_link_proto; u_int8 scsi_addr ; struct scsidevs *bestmatch = NULL; struct scsi_link *sc_link = NULL; boolean maybe_more; int type; if ((bus < 0 ) || ( bus >= scbusses->nelem)) { return ENXIO; } scsibus_data = (struct scsibus_data *)extend_get(scbusses, bus); if(!scsibus_data) return ENXIO; sc_link_proto = scsibus_data->adapter_link; scsi_addr = sc_link_proto->adapter_targ; if(targ == -1){ maxtarg = scsibus_data->maxtarg; mintarg = 0; } else { if((targ < 0 ) || (targ > scsibus_data->maxtarg)) return EINVAL; maxtarg = mintarg = targ; } if(lun == -1){ maxlun = scsibus_data->maxlun; minlun = 0; } else { if((lun < 0 ) || (lun > scsibus_data->maxlun)) return EINVAL; maxlun = minlun = lun; } for ( targ = mintarg;targ <= maxtarg; targ++) { maybe_more = 0; /* by default only check 1 lun */ if (targ == scsi_addr) { continue; } for ( lun = minlun; lun <= maxlun ;lun++) { /* * The spot appears to already have something * linked in, skip past it. Must be doing a 'reprobe' */ if((*scsibus_data->sc_link)[targ][lun]) {/* don't do this one, but check other luns */ maybe_more = 1; continue; } /* * If we presently don't have a link block * then allocate one to use while probing */ if (!sc_link) { sc_link = malloc(sizeof(*sc_link), M_TEMP, M_NOWAIT); } *sc_link = *sc_link_proto; /* struct copy */ sc_link->device = &probe_switch; sc_link->target = targ; sc_link->lun = lun; sc_link->quirks = 0; bestmatch = scsi_probedev(sc_link, &maybe_more, &type); if (bestmatch) { sc_link->quirks = bestmatch->quirks; sc_link->devmodes = bestmatch->devmodes; } else { sc_link->quirks = 0; sc_link->devmodes = NULL; } if (bestmatch) { /* FOUND */ sc_link->device = scsi_device_lookup(type); (void)scsi_assign_unit(sc_link); if (scsi_alloc_unit(sc_link)) { if (scsi_device_attach(sc_link) == 0) { (*scsibus_data->sc_link)[targ][lun] = sc_link; sc_link = NULL; /* it's been used */ } else scsi_free_unit(sc_link); } } if (!(maybe_more)) { /* nothing suggests we'll find more */ break; /* nothing here, skip to next targ */ } /* otherwise something says we should look further */ } } if (sc_link) { free(sc_link, M_TEMP); } return 0; } /* Return the scsi_link for this device, if any. */ struct scsi_link * scsi_link_get(bus, targ, lun) int bus; int targ; int lun; { struct scsibus_data *scsibus_data = (struct scsibus_data *)extend_get(scbusses, bus); return (scsibus_data) ? (*scsibus_data->sc_link)[targ][lun] : 0; } /* make_readable: Make the inquiry data readable. Anything less than a ' ' * is made a '?' and trailing spaces are removed. */ static void make_readable(to, from, n) char *to; char *from; size_t n; { int i; for (i = 0; from[i] && i < n - 1; i++) { if (from[i] < ' ') to[i]='?'; else to[i] = from[i]; } while (i && to[i - 1] == ' ') i--; to[i] = 0; } /* * given a target and lu, ask the device what * it is, and find the correct driver table * entry. */ static struct scsidevs * scsi_probedev(sc_link, maybe_more, type_p) boolean *maybe_more; struct scsi_link *sc_link; int *type_p; { u_int8 target = sc_link->target; u_int8 lu = sc_link->lun; struct scsidevs *bestmatch = (struct scsidevs *) 0; int dtype = 0; char *desc; char *qtype; struct scsi_inquiry_data *inqbuf; u_int32 len, qualifier, type; boolean remov; char manu[8 + 1]; char model[16 + 1]; char version[4 + 1]; inqbuf = &sc_link->inqbuf; bzero(inqbuf, sizeof(*inqbuf)); /* * Ask the device what it is */ #ifdef SCSIDEBUG if ((target == DEBUGTARG) && (lu == DEBUGLUN)) sc_link->flags |= (DEBUGLEVEL); else sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2 | SDEV_DB3 | SDEV_DB4); #endif /* SCSIDEBUG */ /* catch unit attn */ scsi_test_unit_ready(sc_link, SCSI_NOSLEEP | SCSI_NOMASK | SCSI_SILENT); #ifdef DOUBTFULL switch (scsi_test_unit_ready(sc_link, SCSI_NOSLEEP | SCSI_NOMASK | SCSI_SILENT)) { case 0: /* said it WAS ready */ case EBUSY: /* replied 'NOT READY' but WAS present, continue */ case ENXIO: break; case EIO: /* device timed out */ case EINVAL: /* Lun not supported */ default: return (struct scsidevs *) 0; } #endif /*DOUBTFULL*/ #ifdef SCSI_2_DEF /* some devices need to be told to go to SCSI2 */ /* However some just explode if you tell them this.. leave it out */ scsi_change_def(sc_link, SCSI_NOSLEEP | SCSI_NOMASK | SCSI_SILENT); #endif /*SCSI_2_DEF */ /* Now go ask the device all about itself */ if (scsi_inquire(sc_link, inqbuf, SCSI_NOSLEEP | SCSI_NOMASK) != 0) { return (struct scsidevs *) 0; } /* * note what BASIC type of device it is */ type = inqbuf->device & SID_TYPE; qualifier = inqbuf->device & SID_QUAL; remov = inqbuf->dev_qual2 & SID_REMOVABLE; /* * Any device qualifier that has the top bit set (qualifier&4 != 0) * is vendor specific and will match in the default of this switch. */ switch ((int)qualifier) { case SID_QUAL_LU_OK: qtype = ""; break; case SID_QUAL_LU_OFFLINE: qtype = "Supported device currently not connected"; break; case SID_QUAL_RSVD: /* Peripheral qualifier reserved in SCSI-2 spec */ *maybe_more = 1; return (struct scsidevs *) 0; case SID_QUAL_BAD_LU: /* Target can not support a device on this unit */ /* * Check for a non-existent unit. If the device is returning * this much, then we must set the flag that has * the searchers keep looking on other luns. */ *maybe_more = 1; return (struct scsidevs *) 0; default: dtype = 1; qtype = "Vendor specific peripheral qualifier"; *maybe_more = 1; break; } if (dtype == 0) { if (type == T_NODEVICE) { *maybe_more = 1; return (struct scsidevs *) 0; } dtype = 1; } /* * Then if it's advanced enough, more detailed * information */ if ((inqbuf->version & SID_ANSII) > 0) { if ((len = inqbuf->additional_length + ((char *) inqbuf->unused - (char *) inqbuf)) > (sizeof(struct scsi_inquiry_data) - 1)) len = sizeof(struct scsi_inquiry_data) - 1; desc = inqbuf->vendor; desc[len - (desc - (char *) inqbuf)] = 0; make_readable(manu, inqbuf->vendor, sizeof(manu)); make_readable(model, inqbuf->product, sizeof(model)); make_readable(version, inqbuf->revision, sizeof(version)); } else { /* * If not advanced enough, use default values */ desc = "early protocol device"; make_readable(manu, "unknown", sizeof(manu)); make_readable(model, "unknown", sizeof(model)); make_readable(version, "????", sizeof(version)); } sc_print_start(sc_link); printf("\"%s %s %s\" ", manu, model, version ); printf("type %ld %sSCSI %d" ,type ,remov ? "removable " : "fixed " ,inqbuf->version & SID_ANSII ); if (qtype[0]) { sc_print_addr(sc_link); printf(" qualifier %ld: %s" ,qualifier ,qtype); } printf("\n"); sc_print_finish(); /* * Try make as good a match as possible with * available sub drivers */ bestmatch = (scsi_selectdev( qualifier, type, remov ? T_REMOV : T_FIXED, manu, model, version)); if ((bestmatch) && (bestmatch->flags & SC_MORE_LUS)) { *maybe_more = 1; } /* If the device is unknown then we should be trying to look up a * type driver based on the inquiry type. */ if (bestmatch == &unknowndev) *type_p = type; else *type_p = bestmatch->driver; return bestmatch; } /* Try to find the major number for a device during attach. */ dev_t scsi_dev_lookup(d_open) d_open_t *d_open; { int i; dev_t d = NODEV; for (i = 0; i < nchrdev; i++) if (cdevsw[i] && cdevsw[i]->d_open == d_open) { d = makedev(i, 0); break; } return d; } /* * Compare name with pattern, return 0 on match. * Short pattern matches trailing blanks in name, * wildcard '*' in pattern matches rest of name */ static int match(pattern, name) char *pattern; char *name; { char c; while (c = *pattern++) { if (c == '*') return 0; if ((c == '?') && (*name > ' ')) continue; if (c != *name++) return 1; } while (c = *name++) { if (c != ' ') return 1; } return 0; } /* * Try make as good a match as possible with * available sub drivers */ static struct scsidevs * scsi_selectdev(qualifier, type, remov, manu, model, rev) u_int32 qualifier, type; boolean remov; char *manu, *model, *rev; { struct scsidevs *bestmatch = NULL; struct scsidevs *thisentry; type |= qualifier; /* why? */ for ( thisentry = knowndevs; thisentry->manufacturer; thisentry++ ) { if (type != thisentry->type) { continue; } if (remov != thisentry->removable) { continue; } if (thisentry->flags & SC_SHOWME) printf("\n%s-\n%s-", thisentry->manufacturer, manu); if (match(thisentry->manufacturer, manu)) { continue; } if (thisentry->flags & SC_SHOWME) printf("\n%s-\n%s-", thisentry->model, model); if (match(thisentry->model, model)) { continue; } if (thisentry->flags & SC_SHOWME) printf("\n%s-\n%s-", thisentry->version, rev); if (match(thisentry->version, rev)) { continue; } bestmatch = thisentry; break; } if (bestmatch == (struct scsidevs *) 0) { bestmatch = &unknowndev; } return (bestmatch); } int scsi_externalize(struct scsi_link *sl, struct sysctl_req *req) { return SYSCTL_OUT(req, sl, sizeof *sl); }