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- /*
- * This file is part of the UCB release of Plan 9. It is subject to the license
- * terms in the LICENSE file found in the top-level directory of this
- * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
- * part of the UCB release of Plan 9, including this file, may be copied,
- * modified, propagated, or distributed except according to the terms contained
- * in the LICENSE file.
- */
- /*
- * multi-media commands
- *
- * as of mmc-6, mode page 0x2a (capabilities & mechanical status) is legacy
- * and read-only, last defined in mmc-3. mode page 5 (write parameters)
- * applies only to cd-r(w) and dvd-r(w); *-rom, dvd+* and bd-* are right out.
- */
- #include <u.h>
- #include <libc.h>
- #include <disk.h>
- #include "../scuzz/scsireq.h"
- #include "dat.h"
- #include "fns.h"
- enum
- {
- Desperate = 0, /* non-zero grubs around in inquiry string */
- Pagesz = 255,
- Pagerrrecov = 1, /* error recovery */
- Pagwrparams = 5, /* (cd|dvd)-r(w) device write parameters */
- Pagcache = 8,
- Pagcapmechsts = 0x2a,
- Invistrack = 0xff, /* the invisible & incomplete track */
- Maxresptracks = 120, /* (1024-slop) / 8 */
- /* Pagerrrecov error control bits (buf[2]) */
- Erawre = 1<<7, /* recover from write errors */
- Erarre = 1<<6, /* recover from read errors */
- Ertb = 1<<5, /* transfer bad block to host */
- Errc = 1<<4, /* read continuous; no error recovery */
- Erper = 1<<2, /* post error: report recovered errors */
- Erdte = 1<<1, /* disable transfer on error */
- Erdcr = 1<<0, /* disable correction */
- Kilo = 1000LL,
- GB = Kilo * Kilo * Kilo,
- };
- typedef struct Intfeat Intfeat;
- typedef struct Mmcaux Mmcaux;
- static Dev mmcdev;
- struct Mmcaux {
- /* drive characteristics */
- uint8_t page05[Pagesz]; /* write parameters */
- int page05ok;
- int pagecmdsz;
- /* disc characteristics */
- int32_t mmcnwa; /* next writable address (block #) */
- int nropen;
- int nwopen;
- int64_t ntotby;
- int32_t ntotbk;
- };
- struct Intfeat {
- int numb;
- char *name;
- };
- enum {
- Featrandwrite = 0x20,
- Featdfctmgmt = 0x24,
- Featwriteonce = 0x25,
- Featedfctrpt = 0x29,
- Featdvdrw = 0x2a,
- };
- Intfeat intfeats[] = {
- Featrandwrite, "random writable", /* for write-and-verify */
- // 0x21, "incr. streaming writable",
- Featdfctmgmt, "hw defect mgmt.",
- Featwriteonce, "write once", /* for write-and-verify */
- Featedfctrpt, "enhanced defect reporting",
- Featdvdrw, "dvd+rw", /* for dvd write-and-verify */
- 0x38, "pseudo-overwrite",
- // 0x40, "bd read",
- // 0x41, "bd write",
- };
- /* these will be printed as user ids, so no spaces please */
- static char *dvdtype[] = {
- "dvd-rom",
- "dvd-ram",
- "dvd-r",
- "dvd-rw",
- "hd-dvd-rom",
- "hd-dvd-ram",
- "hd-dvd-r",
- "type-7-unknown",
- "type-8-unknown",
- "dvd+rw",
- "dvd+r",
- "type-11-unknown",
- "type-12-unknown",
- "dvd+rw-dl",
- "dvd+r-dl",
- "type-15-unknown",
- };
- static int format(Drive *drive);
- static int getinvistrack(Drive *drive);
- static uint32_t
- bige(void *p)
- {
- uint8_t *a;
- a = p;
- return (a[0]<<24)|(a[1]<<16)|(a[2]<<8)|(a[3]<<0);
- }
- uint32_t
- getnwa(Drive *drive)
- {
- Mmcaux *aux;
- aux = drive->aux;
- return aux->mmcnwa;
- }
- static void
- initcdb(uint8_t *cdb, int len, int cmd)
- {
- memset(cdb, 0, len);
- cdb[0] = cmd;
- }
- /*
- * SCSI CDBs (cmd arrays) are 6, 10, 12, 16 or 32 bytes long.
- * The mode sense/select commands implicitly refer to
- * a mode parameter list, which consists of an 8-byte
- * mode parameter header, followed by zero or more block
- * descriptors and zero or more mode pages (MMC-2 §5.5.2).
- * We'll ignore mode sub-pages.
- * Integers are stored big-endian.
- *
- * The format of the mode parameter (10) header is:
- * ushort mode_data_length; // of following bytes
- * unsigned char medium_type;
- * unsigned char device_specific;
- * unsigned char reserved[2];
- * ushort block_descriptor_length; // zero
- *
- * The format of the mode parameter (6) header is:
- * unsigned char mode_data_length; // of following bytes
- * unsigned char medium_type;
- * unsigned char device_specific;
- * unsigned char block_descriptor_length; // zero
- *
- * The format of the mode pages is:
- * unsigned char page_code_and_PS;
- * unsigned char page_len; // of following bytes
- * unsigned char parameter[page_len];
- *
- * see SPC-3 §4.3.4.6 for allocation length and §7.4 for mode parameter lists.
- */
- enum {
- Mode10parmhdrlen= 8,
- Mode6parmhdrlen = 4,
- Modepaghdrlen = 2,
- };
- static int
- mmcgetpage10(Drive *drive, int page, void *v)
- {
- uint8_t cmd[10], resp[512];
- int n, r;
- initcdb(cmd, sizeof cmd, ScmdMsense10);
- cmd[2] = page;
- cmd[8] = 255; /* allocation length: buffer size */
- n = scsi(&drive->scsi, cmd, sizeof(cmd), resp, sizeof(resp), Sread);
- if(n < Mode10parmhdrlen)
- return -1;
- r = (resp[6]<<8) | resp[7]; /* block descriptor length */
- n -= Mode10parmhdrlen + r;
- if(n < 0)
- return -1;
- if(n > Pagesz)
- n = Pagesz;
- memmove(v, &resp[Mode10parmhdrlen + r], n);
- return n;
- }
- static int
- mmcgetpage6(Drive *drive, int page, void *v)
- {
- uint8_t cmd[6], resp[512];
- int n;
- initcdb(cmd, sizeof cmd, ScmdMsense6);
- cmd[2] = page;
- cmd[4] = 255; /* allocation length */
- n = scsi(&drive->scsi, cmd, sizeof(cmd), resp, sizeof(resp), Sread);
- if(n < Mode6parmhdrlen)
- return -1;
- n -= Mode6parmhdrlen + resp[3];
- if(n < 0)
- return -1;
- if(n > Pagesz)
- n = Pagesz;
- memmove(v, &resp[Mode6parmhdrlen + resp[3]], n);
- return n;
- }
- static int
- mmcsetpage10(Drive *drive, int page, void *v)
- {
- uint8_t cmd[10], *p, *pagedata;
- int len, n;
- /* allocate parameter list, copy in mode page, fill in header */
- pagedata = v;
- assert(pagedata[0] == page);
- len = Mode10parmhdrlen + Modepaghdrlen + pagedata[1];
- p = emalloc(len);
- memmove(p + Mode10parmhdrlen, pagedata, pagedata[1]);
- /* parameter list header */
- p[0] = 0;
- p[1] = len - 2;
- /* set up CDB */
- initcdb(cmd, sizeof cmd, ScmdMselect10);
- cmd[1] = 0x10; /* format not vendor-specific */
- cmd[8] = len;
- n = scsi(&drive->scsi, cmd, sizeof(cmd), p, len, Swrite);
- free(p);
- if(n < len)
- return -1;
- return 0;
- }
- static int
- mmcsetpage6(Drive *drive, int page, void *v)
- {
- uint8_t cmd[6], *p, *pagedata;
- int len, n;
- if (vflag)
- print("mmcsetpage6 called!\n");
- pagedata = v;
- assert(pagedata[0] == page);
- len = Mode6parmhdrlen + Modepaghdrlen + pagedata[1];
- p = emalloc(len);
- memmove(p + Mode6parmhdrlen, pagedata, pagedata[1]);
- initcdb(cmd, sizeof cmd, ScmdMselect6);
- cmd[1] = 0x10; /* format not vendor-specific */
- cmd[4] = len;
- n = scsi(&drive->scsi, cmd, sizeof(cmd), p, len, Swrite);
- free(p);
- if(n < len)
- return -1;
- return 0;
- }
- static int
- mmcgetpage(Drive *drive, int page, void *v)
- {
- Mmcaux *aux;
- aux = drive->aux;
- switch(aux->pagecmdsz) {
- case 10:
- return mmcgetpage10(drive, page, v);
- case 6:
- return mmcgetpage6(drive, page, v);
- default:
- assert(0);
- }
- return -1;
- }
- static int
- mmcsetpage(Drive *drive, int page, void *v)
- {
- Mmcaux *aux;
- aux = drive->aux;
- switch(aux->pagecmdsz) {
- case 10:
- return mmcsetpage10(drive, page, v);
- case 6:
- return mmcsetpage6(drive, page, v);
- default:
- assert(0);
- }
- return -1;
- }
- int
- mmcstatus(Drive *drive)
- {
- uint8_t cmd[12];
- initcdb(cmd, sizeof cmd, ScmdCDstatus); /* mechanism status */
- return scsi(&drive->scsi, cmd, sizeof(cmd), nil, 0, Sread);
- }
- void
- mmcgetspeed(Drive *drive)
- {
- int n, maxread, curread, maxwrite, curwrite;
- uint8_t buf[Pagesz];
- memset(buf, 0, 22);
- n = mmcgetpage(drive, Pagcapmechsts, buf); /* legacy page */
- if (n < 22) {
- if (vflag)
- fprint(2, "no Pagcapmechsts mode page!\n");
- return;
- }
- maxread = (buf[8]<<8)|buf[9];
- curread = (buf[14]<<8)|buf[15];
- maxwrite = (buf[18]<<8)|buf[19];
- curwrite = (buf[20]<<8)|buf[21];
- if(maxread && maxread < 170 || curread && curread < 170)
- return; /* bogus data */
- drive->readspeed = curread;
- drive->writespeed = curwrite;
- drive->maxreadspeed = maxread;
- drive->maxwritespeed = maxwrite;
- }
- static int
- getdevtype(Drive *drive)
- {
- int n;
- uint8_t cmd[6], resp[Pagesz];
- initcdb(cmd, sizeof cmd, ScmdInq);
- cmd[3] = sizeof resp >> 8;
- cmd[4] = sizeof resp;
- n = scsi(&drive->scsi, cmd, sizeof(cmd), resp, sizeof resp, Sread);
- if (n < 8)
- return -1;
- return resp[0] & 037;
- }
- static int
- start(Drive *drive, int code)
- {
- uint8_t cmd[6];
- initcdb(cmd, sizeof cmd, ScmdStart);
- cmd[4] = code;
- return scsi(&drive->scsi, cmd, sizeof(cmd), cmd, 0, Snone);
- }
- static int
- setcaching(Drive *drive)
- {
- int n;
- uint8_t buf[Pagesz];
- /*
- * we can't actually control caching much.
- * see SBC-2 §6.3.3 but also MMC-6 §7.6.
- *
- * should set read ahead, MMC-6 §6.37; seems to control caching.
- */
- n = mmcgetpage(drive, Pagcache, buf);
- if (n < 3)
- return -1;
- /* n == 255; buf[1] == 10 (10 bytes after buf[1]) */
- buf[0] &= 077; /* clear reserved bits, MMC-6 §7.2.3 */
- assert(buf[0] == Pagcache);
- assert(buf[1] >= 10);
- buf[2] = Ccwce;
- if (mmcsetpage(drive, Pagcache, buf) < 0) {
- if (vflag)
- print("mmcprobe: cache control NOT set\n");
- return -1;
- }
- return 0;
- }
- Drive*
- mmcprobe(Scsi *scsi)
- {
- Mmcaux *aux;
- Drive *drive;
- uint8_t buf[Pagesz];
- int cap;
- if (vflag)
- print("mmcprobe: inquiry: %s\n", scsi->inquire);
- drive = emalloc(sizeof(Drive));
- drive->scsi = *scsi;
- drive->Dev = mmcdev;
- drive->invistrack = -1;
- getinvistrack(drive);
- aux = emalloc(sizeof(Mmcaux));
- drive->aux = aux;
- scsiready(&drive->scsi);
- drive->type = getdevtype(drive);
- if (drive->type != TypeCD) {
- werrstr("not an mmc device");
- free(aux);
- free(drive);
- return nil;
- }
- /*
- * drive is an mmc device; learn what we can about it
- * (as opposed to the disc in it).
- */
- start(drive, 1);
- /* attempt to read CD capabilities page, but it's now legacy */
- if(mmcgetpage10(drive, Pagcapmechsts, buf) >= 0)
- aux->pagecmdsz = 10;
- else if(mmcgetpage6(drive, Pagcapmechsts, buf) >= 0)
- aux->pagecmdsz = 6;
- else {
- if (vflag)
- fprint(2, "no Pagcapmechsts mode page!\n");
- werrstr("can't read mode page %d!", Pagcapmechsts);
- free(aux);
- free(drive);
- return nil;
- }
- cap = 0;
- if(buf[Capwrite] & (Capcdr|Capcdrw|Capdvdr|Capdvdram) ||
- buf[Capmisc] & Caprw)
- cap |= Cwrite;
- if(buf[Capmisc] & Capcdda) /* CD-DA commands supported? */
- cap |= Ccdda; /* not used anywhere else */
- /* cache optional page 05 (write parameter page) */
- if(/* (cap & Cwrite) && */
- mmcgetpage(drive, Pagwrparams, aux->page05) >= 0) {
- aux->page05ok = 1;
- cap |= Cwrite;
- if (vflag)
- fprint(2, "mmcprobe: got page 5, assuming drive can write\n");
- } else {
- if (vflag)
- fprint(2, "no Pagwrparams mode page!\n");
- cap &= ~Cwrite;
- }
- drive->cap = cap;
- mmcgetspeed(drive);
- setcaching(drive);
- return drive;
- }
- static char *tracktype[] = { /* indices are track modes (Tm*) */
- "audio cdda",
- "2 audio channels",
- "2",
- "3",
- "data, recorded uninterrupted",
- "data, recorded interrupted",
- };
- /*
- * figure out the first writable block, if we can, into drive->aux->mmcnwa.
- * resp must be from ScmdRtrackinfo.
- */
- static int32_t
- gettracknwa(Drive *drive, int t, uint32_t beg, uint8_t *resp)
- {
- int32_t newnwa;
- Mmcaux *aux;
- aux = drive->aux;
- if(resp[7] & 1) { /* nwa valid? */
- newnwa = bige(&resp[12]);
- if (newnwa >= 0)
- if (aux->mmcnwa < 0)
- aux->mmcnwa = newnwa;
- else if (aux->mmcnwa != newnwa)
- fprint(2, "nwa is %ld but invis track starts blk %ld\n",
- newnwa, aux->mmcnwa);
- }
- /* resp[6] & (1<<7) of zero: invisible track */
- if(t == Invistrack || t == drive->invistrack)
- if (aux->mmcnwa < 0)
- aux->mmcnwa = beg;
- else if (aux->mmcnwa != beg)
- fprint(2, "invis track starts blk %ld but nwa is %ld\n",
- beg, aux->mmcnwa);
- if (vflag && aux->mmcnwa >= 0)
- print(" nwa %lud", aux->mmcnwa);
- return 0;
- }
- /*
- * map tmode to type & bs.
- */
- static void
- gettypebs(uint8_t tmode, int t, int i, int *typep, int *bsp)
- {
- int type, bs;
- if(vflag)
- print("track %d type %d (%s)", t, tmode,
- (tmode < nelem(tracktype)? tracktype[tmode]: "**GOK**"));
- type = TypeNone;
- bs = BScdda;
- switch(tmode){
- case Tmcdda:
- type = TypeAudio;
- bs = BScdda;
- break;
- case Tm2audio: /* 2 audio channels, with pre-emphasis 50/15 μs */
- if(vflag)
- print("audio channels with preemphasis on track %d "
- "(u%.3d)\n", t, i);
- type = TypeNone;
- break;
- case Tmunintr: /* data track, recorded uninterrupted */
- case Tmintr: /* data track, recorded interrupted */
- /* treat Tmintr (5) as cdrom; it's probably dvd or bd */
- type = TypeData;
- bs = BScdrom;
- break;
- default:
- if(vflag)
- print("unknown track type %d\n", tmode);
- break;
- }
- *bsp = bs;
- *typep = type;
- }
- /* t is a track number on disc, i is an index into drive->track[] for result */
- static int
- mmctrackinfo(Drive *drive, int t, int i)
- {
- int n, type, bs;
- uint32_t beg, size;
- uint8_t tmode;
- uint8_t cmd[10], resp[255];
- Track *track;
- initcdb(cmd, sizeof cmd, ScmdRtrackinfo);
- cmd[1] = 1; /* address below is logical track # */
- cmd[2] = t>>24;
- cmd[3] = t>>16;
- cmd[4] = t>>8;
- cmd[5] = t;
- cmd[7] = sizeof(resp)>>8;
- cmd[8] = sizeof(resp);
- n = scsi(&drive->scsi, cmd, sizeof(cmd), resp, sizeof(resp), Sread);
- if(n < 28) {
- if(vflag)
- print("trackinfo %d fails n=%d: %r\n", t, n);
- return -1;
- }
- tmode = resp[5] & 0x0D;
- // dmode = resp[6] & 0x0F;
- gettypebs(tmode, t, i, &type, &bs);
- beg = bige(&resp[8]);
- size = bige(&resp[24]);
- track = &drive->track[i];
- track->mtime = drive->changetime;
- track->beg = beg;
- track->end = beg + size;
- track->type = type;
- track->bs = bs;
- track->size = (int64_t)(size-2) * bs; /* -2: skip lead out */
- if(resp[6] & (1<<6)) { /* blank? */
- track->type = TypeBlank;
- drive->writeok = Yes;
- }
- if(vflag)
- print(" start %lud end %lud", beg, beg + size - 1);
- gettracknwa(drive, t, beg, resp);
- if (vflag)
- print("\n");
- return 0;
- }
- /* this may fail for blank media */
- static int
- mmcreadtoc(Drive *drive, int type, int track, void *data, int nbytes)
- {
- uint8_t cmd[10];
- initcdb(cmd, sizeof cmd, ScmdRTOC);
- cmd[1] = type; /* msf bit & reserved */
- cmd[2] = Tocfmttoc;
- cmd[6] = track; /* track/session */
- cmd[7] = nbytes>>8;
- cmd[8] = nbytes;
- /*
- * printing iounit(drive->scsi.rawfd) here yields
- * iounit(3) = 0; # for local access
- * iounit(3) = 65512; # for remote access via /mnt/term
- */
- return scsi(&drive->scsi, cmd, sizeof(cmd), data, nbytes, Sread);
- }
- static Msf
- rdmsf(uint8_t *p)
- {
- Msf msf;
- msf.m = p[0];
- msf.s = p[1];
- msf.f = p[2];
- return msf;
- }
- static int
- getdiscinfo(Drive *drive, uint8_t resp[], int resplen)
- {
- int n;
- uint8_t cmd[10];
- initcdb(cmd, sizeof cmd, ScmdRdiscinfo);
- cmd[7] = resplen>>8;
- cmd[8] = resplen;
- n = scsi(&drive->scsi, cmd, sizeof(cmd), resp, resplen, Sread);
- if(n < 24) {
- if(n >= 0)
- werrstr("rdiscinfo returns %d", n);
- else if (vflag)
- fprint(2, "read disc info failed\n");
- return -1;
- }
- if (vflag)
- fprint(2, "read disc info succeeded\n");
- assert((resp[2] & 0340) == 0); /* data type 0 */
- drive->erasable = ((resp[2] & 0x10) != 0); /* -RW? */
- return n;
- }
- int
- isbitset(uint bit, uint8_t *map)
- {
- return map[bit/8] & (1 << (bit%8));
- }
- /*
- * set read-write error recovery mode page 1 (10 bytes), mmc-6 §7.3.
- *
- * requires defect management feature (0x24) mmc-6 §5.3.13 (mandatory on bd,
- * but has to be enabled by allocating spares with FORMAT UNIT command)
- * or enhanced defect reporting feature (0x29) mmc-6 §5.3.17,
- * and they are mutually exclusive.
- */
- static int
- seterrrecov(Drive *drive)
- {
- int n;
- uint8_t buf[Pagesz];
- if (!isbitset(Featdfctmgmt, drive->features) &&
- !isbitset(Featedfctrpt, drive->features)) {
- fprint(2, "defect mgmt. and enhanced defect reporting disabled!\n");
- return -1;
- }
- n = mmcgetpage(drive, Pagerrrecov, buf);
- if (n < 3)
- return -1;
- /* n == 255; buf[1] == 10 (10 bytes after buf[1]) */
- /*
- * error recovery page as read:
- * 0: 01 (page: error recovery)
- * 1: 0a (length: 10)
- * 2: c0 (error control bits: 0300 == Erawre|Erarre)
- * 3: 20 (read retry count: 32)
- * 4: 00
- * 5: 00
- * 6: 00
- * 7: 00
- * 8: 01 (write retry count: 1)
- * 9: 00 00 00 (error reporting window size)
- */
- buf[0] &= ~(1<<6); /* clear reserved bit */
- assert((buf[0] & 077) == Pagerrrecov);
- assert(buf[1] >= 10);
- buf[2] = Erawre | Erarre; /* default: Erawre; can't set Ertb */
- if (isbitset(Featedfctrpt, drive->features))
- buf[7] = 1; /* emcdr: 1==recover, don't tell us; default 0 */
- // buf[3] = 32; /* rd retry count; default 32; arbitrary */
- // buf[8] = 1; /* wr retry count; default 1; arbitrary */
- // memset(buf+9, 0, 3); /* err reporting win siz: 0 == no tsr; default 0 */
- if (mmcsetpage(drive, Pagerrrecov, buf) < 0) {
- if (vflag)
- fprint(2, "error recovery NOT set\n");
- return -1;
- }
- if (vflag)
- fprint(2, "error recovery set\n");
- return 0;
- }
- char *
- featname(int feat)
- {
- Intfeat *ifp;
- for (ifp = intfeats; ifp < intfeats + nelem(intfeats); ifp++)
- if (feat == ifp->numb)
- return ifp->name;
- return nil;
- }
- static int
- prof2mmctype(Drive *drive, uint16_t prof)
- {
- if(prof == 0 || prof == 0xffff) /* none or whacko? */
- return -1;
- if(drive->mmctype != Mmcnone)
- return -1;
- switch (prof >> 4) {
- case 0:
- drive->mmctype = Mmccd;
- break;
- case 1:
- if (prof == 0x1a || prof == 0x1b)
- drive->mmctype = Mmcdvdplus;
- else
- drive->mmctype = Mmcdvdminus;
- break;
- case 2:
- drive->mmctype = Mmcdvdplus; /* dual layer */
- break;
- case 4:
- drive->mmctype = Mmcbd;
- if (vflag)
- fprint(2, "getconf profile for bd = %#x\n", prof);
- /*
- * further decode prof to set writability flags.
- * mostly for Pioneer BDR-206M.
- */
- drive->erasable = drive->recordable = No;
- switch (prof) {
- case 0x40:
- break;
- case 0x41:
- case 0x42:
- drive->recordable = Yes;
- break;
- case 0x43:
- drive->erasable = Yes;
- break;
- }
- break;
- case 5:
- drive->mmctype = Mmcdvdminus; /* hd dvd, obs. */
- break;
- }
- return 0;
- }
- static void
- notefeats(Drive *drive, uint8_t *p, uint32_t datalen)
- {
- int left, len;
- uint feat;
- char *ftnm;
- if (vflag)
- fprint(2, "features: ");
- for (left = datalen; left > 0; left -= len, p += len) {
- feat = p[0]<<8 | p[1];
- len = 4 + p[3];
- ftnm = featname(feat);
- if (vflag && ftnm)
- fprint(2, "%#ux (%s) curr %d\n", feat, ftnm, p[2] & 1);
- if (feat >= Maxfeatures) { /* could be vendor-specific */
- if (vflag)
- fprint(2, "feature %d too big for bit map\n",
- feat);
- } else if (p[2] & 1)
- drive->features[feat/8] |= 1 << (feat%8);
- }
- }
- static int
- getconfcmd(Drive *drive, uint8_t *resp, int respsz)
- {
- int n;
- uint32_t datalen;
- uint8_t cmd[10];
- initcdb(cmd, sizeof cmd, Scmdgetconf);
- cmd[3] = 0; /* start with profile list feature */
- cmd[7] = respsz >> 8;
- cmd[8] = respsz;
- n = scsi(&drive->scsi, cmd, sizeof cmd, resp, respsz, Sread);
- if (n < 0) {
- if(vflag)
- fprint(2, "get config cmd failed\n");
- return -1;
- }
- if (n < 4)
- return -1;
- datalen = GETBELONG(resp+0);
- if (datalen < 8)
- return -1;
- return datalen;
- }
- static int
- getconf(Drive *drive)
- {
- uint16_t prof;
- int32_t datalen;
- uint8_t resp[64*1024 - 8]; /* 64k-8 max, 450 typical */
- memset(drive->features, 0, sizeof drive->features);
- datalen = getconfcmd(drive, resp, sizeof resp);
- if(datalen < 0)
- return -1;
- /*
- * features start with an 8-byte header:
- * ulong datalen, ushort reserved, ushort current profile.
- * profile codes (table 92) are: 0 reserved, 1-7 legacy, 8-0xf cd,
- * 0x10-0x1f 0x2a-0x2b dvd*, 0x40-0x4f bd, 0x50-0x5f hd dvd,
- * 0xffff whacko.
- *
- * this is followed by multiple feature descriptors:
- * ushort code, unsigned char bits, unsigned char addnl_len, addnl_len bytes.
- */
- prof = resp[6]<<8 | resp[7];
- if (prof2mmctype(drive, prof) < 0)
- return datalen;
- /*
- * for bd-r, establish non-default recording mode before first write,
- * with FORMAT UNIT command to allocate spares (BD MMC set
- * description, v1.1, §4.4.4).
- */
- if (drive->mmctype == Mmcbd && drive->recordable == Yes &&
- drive->erasable == No) {
- format(drive); /* no-op with error if already been done */
- /* read config again, now that bd-r has spares */
- datalen = getconfcmd(drive, resp, sizeof resp);
- if(datalen < 0)
- return -1;
- }
- /* skip header to find feature list */
- notefeats(drive, resp + 8, datalen - 8);
- if (drive->mmctype == Mmcbd)
- seterrrecov(drive);
- return datalen;
- }
- static int
- getdvdstruct(Drive *drive)
- {
- int n, cat;
- uint8_t cmd[12], resp[Pagesz];
- initcdb(cmd, sizeof cmd, ScmdReadDVD); /* actually, read disc structure */
- cmd[1] = 0; /* media type: dvd */
- cmd[7] = 0; /* format code: physical format */
- cmd[8] = sizeof resp >> 8; /* allocation length */
- cmd[9] = sizeof resp;
- n = scsi(&drive->scsi, cmd, sizeof(cmd), resp, sizeof resp, Sread);
- if (n < 7) {
- if(vflag)
- fprint(2, "read disc structure (dvd) cmd failed\n");
- return -1;
- }
- /* resp[0..1] is resp length */
- cat = (resp[4] & 0xf0) >> 4; /* disk category, MMC-6 §6.22.3.2.1 */
- if (vflag)
- fprint(2, "dvd type is %s\n", dvdtype[cat]);
- drive->dvdtype = dvdtype[cat];
- /* write parameters mode page may suffice to compute writeok for dvd */
- drive->erasable = drive->recordable = No;
- /*
- * the layer-type field is a *bit array*,
- * though an enumeration of types would make more sense,
- * since the types are exclusive, not orthogonal.
- */
- if (resp[6] & (1<<2)) /* rewritable? */
- drive->erasable = Yes;
- else if (resp[6] & (1<<1)) /* recordable once? */
- drive->recordable = Yes;
- /* else it's a factory-pressed disk */
- drive->mmctype = (cat >= 8? Mmcdvdplus: Mmcdvdminus);
- return 0;
- }
- /*
- * ugly hack to divine device type from inquiry string as last resort.
- * mostly for Pioneer BDR-206M.
- */
- static int
- bdguess(Drive *drive)
- {
- if (drive->mmctype == Mmcnone) {
- if (strstr(drive->scsi.inquire, "BD") == nil)
- return -1;
- if (vflag)
- fprint(2, "drive probably a BD (from inquiry string)\n");
- drive->mmctype = Mmcbd;
- } else if (drive->mmctype == Mmcbd) {
- if (drive->erasable != Unset && drive->recordable != Unset)
- return 0;
- } else
- return -1;
- drive->recordable = drive->writeok = No;
- if (strstr(drive->scsi.inquire, "RW") != nil) {
- if (vflag)
- fprint(2, "drive probably a burner (from inquiry string)\n");
- drive->recordable = drive->writeok = Yes;
- if (drive->erasable == Unset) { /* set by getdiscinfo perhaps */
- drive->erasable = No; /* no way to tell, alas */
- if (vflag)
- fprint(2, "\tassuming -r not -re\n");
- }
- } else {
- if (drive->erasable == Unset)
- drive->erasable = No;
- }
- if (drive->erasable == Yes)
- drive->recordable = No; /* mutually exclusive */
- return 0;
- }
- static int
- getbdstruct(Drive *drive)
- {
- int n;
- uint8_t cmd[12], resp[4+4096];
- uint8_t *di, *body;
- initcdb(cmd, sizeof cmd, ScmdReadDVD); /* actually, read disc structure */
- cmd[1] = 1; /* media type: bd */
- /* cmd[6] is layer #, 0 is first */
- cmd[7] = 0; /* format code: disc info */
- cmd[8] = sizeof resp >> 8; /* allocation length */
- cmd[9] = (int8_t)sizeof resp;
- n = scsi(&drive->scsi, cmd, sizeof(cmd), resp, sizeof resp, Sread);
- if(n < 0) {
- if(vflag)
- fprint(2, "read disc structure (bd) cmd failed\n");
- return -1;
- }
- /*
- * resp[0..1] is resp length (4100); 2 & 3 are reserved.
- * there may be multiple disc info structs of 112 bytes each.
- * disc info (di) starts at 4. di[0..7] are header, followed by body.
- * body[0..2] is bd type (disc type identifier):
- * BDO|BDW|BDR, MMC-6 §6.22.3.3.1. The above scsi command should
- * fail on DVD drives, but some seem to ignore media type
- * and return successfully, so verify that it's a BD drive.
- */
- di = resp + 4;
- body = di + 8;
- n -= 4 + 8;
- if (n < 3 || di[0] != 'D' || di[1] != 'I' ||
- body[0] != 'B' || body[1] != 'D') {
- if(vflag)
- fprint(2, "it's not a bd\n");
- return -1;
- }
- if (vflag)
- fprint(2, "read disc structure (bd) succeeded; di format %d\n",
- di[2]);
- drive->erasable = drive->recordable = No;
- switch (body[2]) {
- case 'O': /* read-Only */
- break;
- case 'R': /* Recordable */
- drive->recordable = Yes;
- break;
- case 'W': /* reWritable */
- drive->erasable = Yes;
- break;
- default:
- fprint(2, "%s: unknown bd type BD%c\n", argv0, body[2]);
- return -1;
- }
- /* printed getbdstruct: di bytes 98 di units/layers 32 */
- // fprint(2, "getbdstruct: di bytes %d di units/layers %d\n", di[6], di[3]);
- drive->mmctype = Mmcbd;
- return 0;
- }
- /*
- * infer endings from the beginnings of other tracks.
- */
- static int
- mmcinfertracks(Drive *drive, int first, int last)
- {
- int i;
- uint8_t resp[1024];
- uint32_t tot;
- Track *t;
- if (vflag)
- fprint(2, "inferring tracks from toc\n");
- for(i = first; i <= last; i++) {
- memset(resp, 0, sizeof(resp));
- if(mmcreadtoc(drive, 0, i, resp, sizeof(resp)) < 0) {
- last = i - 1;
- if (last < 1)
- last = 1;
- break;
- }
- t = &drive->track[i-first];
- t->mtime = drive->changetime;
- t->type = TypeData;
- t->bs = BScdrom;
- t->beg = bige(resp+8);
- if(!(resp[5] & 4)) {
- t->type = TypeAudio;
- t->bs = BScdda;
- }
- }
- if((int32_t)drive->track[0].beg < 0) /* i've seen negative track 0's */
- drive->track[0].beg = 0;
- tot = 0;
- memset(resp, 0, sizeof(resp));
- /* 0xAA is lead-out */
- if(mmcreadtoc(drive, 0, 0xAA, resp, sizeof(resp)) < 0)
- print("bad mmcreadtoc\n");
- if(resp[6])
- tot = bige(resp+8);
- t = nil;
- for(i=last; i>=first; i--) {
- t = &drive->track[i-first];
- t->end = tot;
- tot = t->beg;
- if(t->end <= t->beg)
- t->beg = t->end = 0;
- /* -2: skip lead out */
- t->size = (t->end - t->beg - 2) * (int64_t)t->bs;
- }
- fprint(2, "infertracks: nwa should be %,lld; tot = %,ld\n", t->size, tot);
- return last;
- }
- static void
- initdrive(Drive *drive)
- {
- int i;
- Mmcaux *aux;
- drive->ntrack = 0;
- drive->nameok = 0;
- drive->nchange = drive->scsi.nchange;
- drive->changetime = drive->scsi.changetime;
- drive->writeok = No;
- drive->erasable = drive->recordable = Unset;
- drive->laysfx = nil;
- getinvistrack(drive);
- aux = drive->aux;
- aux->mmcnwa = -1;
- aux->nropen = aux->nwopen = 0;
- aux->ntotby = aux->ntotbk = 0;
- for(i=0; i<nelem(drive->track); i++){
- memset(&drive->track[i].mbeg, 0, sizeof(Msf));
- memset(&drive->track[i].mend, 0, sizeof(Msf));
- }
- }
- static int32_t
- computenwa(Drive *drive, int first, int last)
- {
- int i;
- uint32_t nwa;
- Track *t;
- /*
- * work through the tracks in reverse order (last to first).
- * assume last is the to-be-written invisible track.
- */
- nwa = 0;
- for(i=last-1; i>=first; i--) {
- t = &drive->track[i-first];
- nwa += t->end - t->beg;
- }
- return nwa;
- }
- static int
- findntracks(Drive *drive, int *firstp, int *lastp)
- {
- int i, n, first, last;
- uint8_t resp[1024];
- if((n = mmcreadtoc(drive, Msfbit, 0, resp, sizeof(resp))) < 4) {
- /*
- * it could be a blank disc. in case it's a blank disc in a
- * cd-rw drive, use readdiscinfo to try to find the track info.
- */
- if(getdiscinfo(drive, resp, sizeof(resp)) < 7)
- return -1;
- assert((resp[2] & 0340) == 0); /* data type 0 */
- if(resp[4] != 1)
- print("multi-session disc %d\n", resp[4]);
- drive->writeok = Yes;
- /*
- * some drives (e.g., LG's BDs) report only 1 track on an
- * unfinalized disc, so probe every track. the nwa reported
- * by such drives may be wrong (e.g., 0), so compute that too.
- */
- first = resp[3];
- last = resp[6];
- if(vflag)
- print("rdiscinfo tracks %d-%d (last==1 means TBD)\n",
- first, last);
- if(last == 1)
- last = Maxresptracks; /* probe the tracks */
- } else {
- first = resp[2];
- last = resp[3];
- if(vflag)
- print("toc tracks %d-%d (last==1 means TBD)\n",
- first, last);
- if(last == 1)
- last = Maxresptracks; /* probe the tracks */
- if(n >= 4+8*(last-first+2)) {
- /* resp[4 + i*8 + 2] is track # */
- /* <=: track[last-first+1] = end */
- for(i=0; i<=last-first+1; i++)
- drive->track[i].mbeg = rdmsf(resp+4+i*8+5);
- for(i=0; i<last-first+1; i++)
- drive->track[i].mend = drive->track[i+1].mbeg;
- }
- }
- *firstp = first;
- *lastp = last;
- return 0;
- }
- /* needs drive->mmctype to be already set */
- static int
- alltrackinfo(Drive *drive, int first, int last)
- {
- int i;
- int32_t nwa;
- int64_t cap;
- char *osfx;
- Mmcaux *aux;
- Track *track;
- for(i = first; i <= last; i++)
- if (mmctrackinfo(drive, i, i - first) < 0) {
- last = i - 1;
- if (last < 1)
- last = 1;
- break;
- }
- track = &drive->track[last - first];
- drive->end = track->end;
- if (drive->mmctype == Mmcbd) {
- /* allow for lower apparent capacity due to reserved spares */
- cap = (int64_t)track->end * track->bs;
- osfx = drive->laysfx;
- if (cap >= (int64_t)101*GB)
- drive->laysfx = "-ql"; /* 128GB nominal */
- else if (cap >= (int64_t)51*GB)
- drive->laysfx = "-tl"; /* 100GB nominal */
- else if (cap >= (int64_t)26*GB)
- drive->laysfx = "-dl"; /* 50GB nominal */
- else
- drive->laysfx = ""; /* 25GB nominal */
- if (vflag)
- fprint(2, "capacity %,lud sectors (%,lld bytes); bd%s\n",
- track->end, cap, drive->laysfx);
- if (osfx == nil || strcmp(osfx, drive->laysfx) != 0)
- drive->relearn = 1;
- }
- if (drive->mmctype == Mmcnone)
- return last; /* no disc */
- nwa = computenwa(drive, first, last);
- aux = drive->aux;
- if (vflag)
- fprint(2, "nwa from drive %,ld; computed nwa %,ld\n",
- aux->mmcnwa, nwa);
- if (aux->mmcnwa == -1 && nwa == 0)
- return last; /* probably a blank disc */
- if (aux->mmcnwa == -1)
- fprint(2, "%s: disc is full\n", argv0);
- /* reconcile differing nwas */
- if (aux->mmcnwa != nwa) {
- fprint(2, "%s: nwa from drive %,ld != computed nwa %,ld\n",
- argv0, aux->mmcnwa, nwa);
- fprint(2, "\tbe careful! assuming computed nwa\n");
- /* the invisible track may still start at the old nwa. */
- // aux->mmcnwa = nwa;
- }
- return last;
- }
- static int
- findtracks(Drive *drive, int first, int last)
- {
- if(first == 0 && last == 0)
- first = 1;
- if(first <= 0 || first >= Maxtrack) {
- werrstr("first table %d not in range", first);
- return -1;
- }
- if(last <= 0 || last >= Maxtrack) {
- werrstr("last table %d not in range", last);
- return -1;
- }
- if(!(drive->cap & Cwrite))
- last = mmcinfertracks(drive, first, last);
- else
- last = alltrackinfo(drive, first, last);
- drive->firsttrack = first;
- drive->ntrack = last+1-first;
- if (vflag)
- fprint(2, "this time for sure: first %d last %d\n", first, last);
- return 0;
- }
- static void
- finddisctype(Drive *drive, int first, int last)
- {
- char *ty;
- /* deduce disc type */
- drive->mmctype = Mmcnone;
- drive->dvdtype = nil;
- getdvdstruct(drive);
- getconf(drive);
- getbdstruct(drive);
- if (Desperate)
- bdguess(drive);
- if (drive->mmctype == Mmcnone)
- drive->mmctype = Mmccd; /* by default */
- if (drive->recordable == Yes || drive->erasable == Yes)
- drive->writeok = Yes;
- if (vflag) {
- fprint(2, "writeok %d", drive->writeok);
- if (drive->recordable != Unset)
- fprint(2, " recordable %d", drive->recordable);
- if (drive->erasable != Unset)
- fprint(2, " erasable %d", drive->erasable);
- fprint(2, "\n");
- fprint(2, "first %d last ", first);
- if (last == Maxresptracks)
- print("TBD\n");
- else
- print("%d\n", last);
- ty = disctype(drive);
- fprint(2, "it's a %s disc.", ty);
- free(ty);
- if (drive->mmctype == Mmcbd && drive->laysfx == nil)
- fprint(2, " (number of layers isn't known yet.)");
- fprint(2, "\n\n");
- }
- }
- /* this gets called a lot from main.c's 9P routines */
- static int
- mmcgettoc(Drive *drive)
- {
- int first, last;
- uint8_t resp[1024];
- /*
- * if someone has swapped the cd,
- * mmcreadtoc will get ``medium changed'' and the scsi routines
- * will set nchange and changetime in the scsi device.
- */
- mmcreadtoc(drive, 0, 0, resp, sizeof(resp));
- if(drive->scsi.changetime == 0) { /* no media present */
- drive->mmctype = Mmcnone;
- drive->ntrack = 0;
- return 0;
- }
- /*
- * if the disc doesn't appear to be have been changed, and there
- * is a disc in this drive, there's nothing to do (the common case).
- */
- if(drive->nchange == drive->scsi.nchange && drive->changetime != 0 &&
- !drive->relearn)
- return 0;
- drive->relearn = 0;
- /*
- * the disc in the drive may have just been changed,
- * so rescan it and relearn all about it.
- */
- if (vflag &&
- (drive->nchange != drive->scsi.nchange || drive->changetime == 0))
- fprint(2, "\nnew disc in drive\n");
- initdrive(drive);
- if (findntracks(drive, &first, &last) < 0)
- return -1;
- /*
- * we would like to call findtracks before finddisctype so that
- * we can format bd-rs at the right capacity with explicit spares
- * ratio given, but findtracks needs the disc type to be already set.
- * format is called from getconf from finddisctype before getbdstruct.
- * luckily, FORMAT UNIT (thus format()) doesn't seem to care when we
- * don't provide an explicit spares ratio.
- */
- /* calls getdvdstruct, getconf and getbdstruct, in that order */
- finddisctype(drive, first, last); /* formats bds at first use */
- return findtracks(drive, first, last);
- }
- static void
- settrkmode(uint8_t *p, int mode)
- {
- p[Wptrkmode] &= ~0xf;
- p[Wptrkmode] |= mode;
- }
- /*
- * this uses page 5, which is optional.
- */
- static int
- mmcsetbs(Drive *drive, int bs)
- {
- uint8_t *p;
- Mmcaux *aux;
- aux = drive->aux;
- if (!aux->page05ok)
- return 0; /* harmless; assume 2k */
- p = aux->page05;
- /*
- * establish defaults.
- */
- p[0] &= 077; /* clear reserved bits, MMC-6 §7.2.3 */
- p[Wpwrtype] = Bufe | Wttrackonce;
- // if(testonlyflag)
- // p[Wpwrtype] |= 0x10; /* test-write */
- /* assume dvd values as defaults */
- settrkmode(p, Tmintr);
- p[Wptrkmode] |= Msnext;
- p[Wpdatblktype] = Db2kdata;
- p[Wpsessfmt] = Sfdata;
- switch(drive->mmctype) {
- case Mmcdvdplus:
- case Mmcbd:
- break;
- case Mmcdvdminus:
- /* dvd-r can only do disc-at-once or incremental */
- p[Wpwrtype] = Bufe | Wtsessonce;
- break;
- case Mmccd:
- settrkmode(p, Tmunintr); /* data track, uninterrupted */
- switch(bs){
- case BScdda:
- /* 2 audio channels without pre-emphasis */
- settrkmode(p, Tmcdda); /* should be Tm2audio? */
- p[Wpdatblktype] = Dbraw;
- break;
- case BScdrom:
- break;
- case BScdxa:
- p[Wpdatblktype] = Db2336;
- p[Wpsessfmt] = Sfcdxa;
- break;
- default:
- fprint(2, "%s: unknown CD type; bs %d\n", argv0, bs);
- assert(0);
- }
- break;
- default:
- fprint(2, "%s: unknown disc sub-type %d\n",
- argv0, drive->mmctype);
- break;
- }
- if(mmcsetpage(drive, Pagwrparams, p) < 0) {
- if (vflag)
- fprint(2, "mmcsetbs: could NOT set write parameters page\n");
- return -1;
- }
- return 0;
- }
- /*
- * `read cd' only works for CDs; for everybody else,
- * we'll try plain `read (12)'. only use read cd if it's
- * a cd drive with a cd in it and we're not reading data
- * (e.g., reading audio).
- */
- static int
- fillread12cdb(Drive *drive, uint8_t *cmd, int32_t nblock, uint32_t off,
- int bs)
- {
- if (drive->type == TypeCD && drive->mmctype == Mmccd && bs != BScdrom) {
- initcdb(cmd, 12, ScmdReadcd);
- cmd[6] = nblock>>16;
- cmd[7] = nblock>>8;
- cmd[8] = nblock>>0;
- cmd[9] = 0x10;
- switch(bs){
- case BScdda:
- cmd[1] = 0x04;
- break;
- case BScdrom:
- cmd[1] = 0x08;
- break;
- case BScdxa:
- cmd[1] = 0x0C;
- break;
- default:
- werrstr("unknown bs %d", bs);
- return -1;
- }
- } else { /* e.g., TypeDA */
- initcdb(cmd, 12, ScmdRead12);
- cmd[6] = nblock>>24;
- cmd[7] = nblock>>16;
- cmd[8] = nblock>>8;
- cmd[9] = nblock;
- // cmd[10] = 0x80; /* streaming */
- }
- cmd[2] = off>>24;
- cmd[3] = off>>16;
- cmd[4] = off>>8;
- cmd[5] = off>>0;
- return 0;
- }
- /* off is a block number */
- static int32_t
- mmcread(Buf *buf, void *v, int32_t nblock, uint32_t off)
- {
- int bs;
- int32_t n, nn;
- uint8_t cmd[12];
- Drive *drive;
- Otrack *o;
- o = buf->otrack;
- drive = o->drive;
- bs = o->track->bs;
- off += o->track->beg;
- if(nblock >= (1<<10)) {
- werrstr("mmcread too big");
- if(vflag)
- fprint(2, "mmcread too big\n");
- return -1;
- }
- /* truncate nblock modulo size of track */
- if(off > o->track->end - 2) {
- werrstr("read past end of track");
- if(vflag)
- fprint(2, "end of track (%ld->%ld off %ld)",
- o->track->beg, o->track->end - 2, off);
- return -1;
- }
- if(off == o->track->end - 2)
- return 0;
- if(off+nblock > o->track->end - 2)
- nblock = o->track->end - 2 - off;
- if (fillread12cdb(drive, cmd, nblock, off, bs) < 0)
- return -1;
- n = nblock*bs;
- nn = scsi(&drive->scsi, cmd, sizeof(cmd), v, n, Sread);
- if(nn != n) {
- if(nn != -1)
- werrstr("short read %ld/%ld", nn, n);
- if(vflag)
- print("read off %lud nblock %ld bs %d failed\n",
- off, nblock, bs);
- return -1;
- }
- return nblock;
- }
- static Otrack*
- mmcopenrd(Drive *drive, int trackno)
- {
- Otrack *o;
- Mmcaux *aux;
- if(trackno < 0 || trackno >= drive->ntrack) {
- werrstr("track number out of range");
- return nil;
- }
- aux = drive->aux;
- if(aux->nwopen) {
- werrstr("disk in use for writing");
- return nil;
- }
- o = emalloc(sizeof(Otrack));
- o->drive = drive;
- o->track = &drive->track[trackno];
- o->nchange = drive->nchange;
- o->omode = OREAD;
- o->buf = bopen(mmcread, OREAD, o->track->bs, Readblock);
- o->buf->otrack = o;
- aux->nropen++;
- return o;
- }
- enum {
- Flhlen = 4, /* format list header length */
- Fdlen = 8, /* format descriptor length */
- /* format unit cdb[1] */
- Formatdata = 0x10,
- /* format list header [1] */
- Immed = 1<<1, /* immediate return, don't wait */
- /* format descriptor [4] */
- Fmtfull = 0,
- Fullbdrsrm = 0, /* sequential */
- Fullbdrsrmspares= 1, /* + spares for defect mgmt. */
- Fullbdrrrm = 2, /* random */
- Fmtbdrspares = 0x32 << 2,
- Bdrsparessrmplus= 0, /* srm+pow */
- Bdrsparessrmminus=1, /* srm-pow */
- Bdrsparesrrm = 2, /* random */
- };
- static int
- format(Drive *drive)
- {
- int setblksz;
- uint32_t nblks, blksize;
- uint8_t *fmtdesc;
- uint8_t cmd[6], parms[Flhlen+Fdlen];
- if (drive->recordable == Yes && drive->mmctype != Mmcbd) {
- werrstr("don't format write-once cd or dvd media");
- return -1;
- }
- initcdb(cmd, sizeof cmd, ScmdFormat); /* format unit */
- cmd[1] = Formatdata | 1; /* mmc format code 1 */
- /* parms is format list header & format descriptor */
- memset(parms, 0, sizeof parms);
- /* format list header */
- parms[1] = Immed;
- parms[3] = Fdlen;
- fmtdesc = parms + Flhlen;
- fmtdesc[4] = Fmtfull;
- /* 0-3 are big-endian # of blocks, 5-7 format-dependent data */
- nblks = 0;
- blksize = BScdrom;
- setblksz = 1;
- switch (drive->mmctype) {
- case Mmccd:
- nblks = 0;
- break;
- case Mmcdvdplus:
- /* format type 0 is optional but equiv to format type 0x26 */
- fmtdesc[4] = 0x26 << 2;
- nblks = (int64_t)~0ul;
- blksize = 0;
- break;
- case Mmcbd:
- /* enable BD-R defect mgmt. */
- if (drive->recordable == Yes && drive->erasable == No) {
- parms[1] &= ~Immed;
- fmtdesc[4] |= Fullbdrsrmspares;
- setblksz = 0;
- }
- break;
- }
- PUTBELONG(fmtdesc, nblks);
- if (setblksz)
- PUTBE24(fmtdesc + 5, blksize);
- // print("format parameters:\n");
- // hexdump(parms, sizeof parms);
- if(vflag)
- print("%lld ns: format\n", nsec());
- return scsi(&drive->scsi, cmd, sizeof(cmd), parms, sizeof parms, Swrite);
- }
- static int
- dvdcanverify(Drive *drive)
- {
- return (drive->mmctype == Mmcdvdplus ||
- drive->mmctype == Mmcdvdminus) &&
- isbitset(Featrandwrite, drive->features) &&
- isbitset(Featwriteonce, drive->features) &&
- isbitset(Featdvdrw, drive->features);
- }
- static int32_t
- mmcxwrite(Otrack *o, void *v, int32_t nblk)
- {
- int r;
- int32_t bs;
- uint8_t cmd[10];
- Drive *drive;
- Mmcaux *aux;
- assert(o->omode == OWRITE);
- bs = o->track->bs;
- drive = o->drive;
- aux = drive->aux;
- if (aux->mmcnwa == -1 && scsiready(&drive->scsi) < 0) {
- werrstr("device not ready to write");
- return -1;
- }
- if (aux->mmcnwa == -1 ||
- drive->end != 0 && aux->mmcnwa + nblk > drive->end) {
- werrstr("writing past last block");
- return -1;
- }
- if (nblk <= 0)
- fprint(2, "mmcxwrite: nblk %ld <= 0\n", nblk);
- aux->ntotby += nblk * bs;
- aux->ntotbk += nblk;
- /*
- * "write and verify" (ScmdExtwritever) only works on write-once media
- * and not on CDs (mmc-6 §6.48.1).
- */
- if ((drive->mmctype == Mmcbd || dvdcanverify(drive)) &&
- drive->recordable == Yes && drive->erasable == No)
- initcdb(cmd, sizeof cmd, ScmdExtwritever);
- else
- initcdb(cmd, sizeof cmd, ScmdExtwrite); /* write (10) */
- cmd[2] = aux->mmcnwa>>24;
- cmd[3] = aux->mmcnwa>>16;
- cmd[4] = aux->mmcnwa>>8;
- cmd[5] = aux->mmcnwa;
- cmd[7] = nblk>>8;
- cmd[8] = nblk>>0;
- if(vflag > 1)
- print("%lld ns: write+verify %ld at %#lux\n",
- nsec(), nblk, aux->mmcnwa);
- /*
- * we are using a private copy of scsi.c that doesn't retry writes
- * to ensure that the write-verify command is issued exactly once.
- * the drive may perform internal defect management on write errors,
- * but explicit attempts to rewrite a given sector on write-once
- * media are guaranteed to fail.
- */
- r = scsi(&drive->scsi, cmd, sizeof(cmd), v, nblk * bs, Swrite);
- if (r < 0)
- fprint(2, "%s: write+verify error at blk offset %,ld = "
- "offset %,lld / bs %ld: %r\n",
- argv0, aux->mmcnwa, (int64_t)aux->mmcnwa * bs, bs);
- else
- aux->mmcnwa += nblk;
- return r;
- }
- static int32_t
- mmcwrite(Buf *buf, void *v, int32_t nblk, uint32_t i)
- {
- return mmcxwrite(buf->otrack, v, nblk);
- }
- enum {
- Eccblk = 128, /* sectors per ecc block */
- Rsvslop = 0,
- };
- static int
- reserve(Drive *drive, int track)
- {
- uint32_t sz;
- uint8_t cmd[10];
- initcdb(cmd, sizeof cmd, ScmdReserve);
- track -= drive->firsttrack; /* switch to zero-origin */
- if (track >= 0 && track < drive->ntrack)
- /* .end is next sector past sz */
- sz = drive->track[track].end - drive->track[track].beg - Rsvslop;
- else {
- sz = Eccblk;
- fprint(2, "%s: reserve: track #%d out of range 0-%d\n",
- argv0, track, drive->ntrack);
- }
- sz -= sz % Eccblk; /* round down to ecc-block multiple */
- if ((int32_t)sz < 0) {
- fprint(2, "%s: reserve: bogus size %lud\n", argv0, sz);
- return -1;
- }
- cmd[1] = 0; /* no ASRV: allocate by size not lba */
- PUTBELONG(cmd + 2 + 3, sz);
- if (vflag)
- fprint(2, "reserving %ld sectors\n", sz);
- return scsi(&drive->scsi, cmd, sizeof cmd, cmd, 0, Snone);
- }
- static int
- getinvistrack(Drive *drive)
- {
- int n;
- uint8_t cmd[10], resp[Pagesz];
- initcdb(cmd, sizeof(cmd), ScmdRtrackinfo);
- cmd[1] = 1<<2 | 1; /* open; address below is logical track # */
- PUTBELONG(cmd + 2, 1); /* find first open track */
- cmd[7] = sizeof(resp)>>8;
- cmd[8] = sizeof(resp);
- n = scsi(&drive->scsi, cmd, sizeof(cmd), resp, sizeof(resp), Sread);
- if(n < 4) {
- if(vflag)
- print("trackinfo for invis track fails n=%d: %r\n", n);
- return -1;
- }
- if(vflag)
- print("getinvistrack: track #%d session #%d\n",
- resp[2], resp[3]);
- drive->invistrack = resp[2];
- return resp[2];
- }
- static Otrack*
- mmccreate(Drive *drive, int type)
- {
- int bs;
- Mmcaux *aux;
- Track *t;
- Otrack *o;
- aux = drive->aux;
- if(aux->nropen || aux->nwopen) {
- werrstr("drive in use");
- return nil;
- }
- switch(type){
- case TypeAudio:
- bs = BScdda;
- break;
- case TypeData:
- bs = BScdrom;
- break;
- default:
- werrstr("bad type %d", type);
- return nil;
- }
- /* comment out the returns for now; it should be no big deal - geoff */
- if(mmctrackinfo(drive, drive->invistrack, Maxtrack)) {
- if (vflag)
- fprint(2, "mmccreate: mmctrackinfo for invis track %d"
- " failed: %r\n", drive->invistrack);
- werrstr("disc not writable");
- // return nil;
- }
- if(mmcsetbs(drive, bs) < 0) {
- werrstr("cannot set bs mode");
- // return nil;
- }
- if(mmctrackinfo(drive, drive->invistrack, Maxtrack)) {
- if (vflag)
- fprint(2, "mmccreate: mmctrackinfo for invis track %d"
- " (2) failed: %r\n", drive->invistrack);
- werrstr("disc not writable 2");
- // return nil;
- }
- /* special hack for dvd-r: reserve the invisible track */
- if (drive->mmctype == Mmcdvdminus && drive->writeok &&
- drive->recordable == Yes && reserve(drive, drive->invistrack) < 0) {
- if (vflag)
- fprint(2, "mmcreate: reserving track %d for dvd-r "
- "failed: %r\n", drive->invistrack);
- return nil;
- }
- aux->ntotby = 0;
- aux->ntotbk = 0;
- t = &drive->track[drive->ntrack++];
- t->size = 0;
- t->bs = bs;
- t->beg = aux->mmcnwa;
- t->end = 0;
- t->type = type;
- drive->nameok = 0;
- o = emalloc(sizeof(Otrack));
- o->drive = drive;
- o->nchange = drive->nchange;
- o->omode = OWRITE;
- o->track = t;
- o->buf = bopen(mmcwrite, OWRITE, bs, Readblock);
- o->buf->otrack = o;
- aux->nwopen++;
- if(vflag)
- print("mmcinit: nwa = %#luX\n", aux->mmcnwa);
- return o;
- }
- /*
- * issue some form of close track, close session or finalize disc command.
- * see The Matrix, table 252 in MMC-6 §6.3.2.3.
- */
- static int
- mmcxclose(Drive *drive, int clf, int trackno)
- {
- uint8_t cmd[10];
- initcdb(cmd, sizeof cmd, ScmdClosetracksess);
- /* cmd[1] & 1 is the immediate bit */
- cmd[2] = clf; /* close function */
- if(clf == Closetrack)
- cmd[5] = trackno;
- return scsi(&drive->scsi, cmd, sizeof(cmd), cmd, 0, Snone);
- }
- /* flush drive cache, close current track */
- void
- mmcsynccache(Drive *drive)
- {
- uint8_t cmd[10];
- Mmcaux *aux;
- initcdb(cmd, sizeof cmd, ScmdSynccache);
- /*
- * this will take a long time to burn the remainder of a dvd-r
- * with a reserved track covering the whole disc.
- */
- if (vflag) {
- fprint(2, "syncing cache");
- if (drive->mmctype == Mmcdvdminus && drive->writeok &&
- drive->recordable == Yes)
- fprint(2, "; dvd-r burning rest of track reservation, "
- "will be slow");
- fprint(2, "\n");
- }
- scsi(&drive->scsi, cmd, sizeof(cmd), cmd, 0, Snone);
- if(vflag) {
- aux = drive->aux;
- print("mmcsynccache: bytes = %lld blocks = %ld, mmcnwa %#luX\n",
- aux->ntotby, aux->ntotbk, aux->mmcnwa);
- }
- /*
- * rsc: seems not to work on some drives.
- * so ignore return code & don't issue on dvd+rw.
- */
- if(drive->mmctype != Mmcdvdplus || drive->erasable == No) {
- if (vflag)
- fprint(2, "closing invisible track %d (not dvd+rw)...\n",
- drive->invistrack);
- mmcxclose(drive, Closetrack, drive->invistrack);
- if (vflag)
- fprint(2, "... done.\n");
- }
- getinvistrack(drive); /* track # has probably changed */
- }
- /*
- * close the open track `o'.
- */
- static void
- mmcclose(Otrack *o)
- {
- Mmcaux *aux;
- static uint8_t zero[2*BSmax];
- aux = o->drive->aux;
- if(o->omode == OREAD)
- aux->nropen--;
- else if(o->omode == OWRITE) {
- aux->nwopen--;
- mmcxwrite(o, zero, 2); /* write lead out */
- mmcsynccache(o->drive);
- o->drive->nchange = -1; /* force reread toc */
- }
- free(o);
- }
- static int
- setonesess(Drive *drive)
- {
- uint8_t *p;
- Mmcaux *aux;
- /* page 5 is legacy and now read-only; see MMC-6 §7.5.4.1 */
- aux = drive->aux;
- if (!aux->page05ok)
- return -1;
- p = aux->page05;
- p[Wptrkmode] &= ~Msbits;
- p[Wptrkmode] |= Msnonext;
- return mmcsetpage(drive, Pagwrparams, p);
- }
- /*
- * close the current session, then finalize the disc.
- */
- static int
- mmcfixate(Drive *drive)
- {
- int r;
- if((drive->cap & Cwrite) == 0) {
- werrstr("not a writer");
- return -1;
- }
- drive->nchange = -1; /* force reread toc */
- setonesess(drive);
- /* skip explicit close session on bd-r */
- if (drive->mmctype != Mmcbd || drive->erasable == Yes) {
- if (vflag)
- fprint(2, "closing session and maybe finalizing...\n");
- r = mmcxclose(drive, Closesessfinal, 0);
- if (vflag)
- fprint(2, "... done.\n");
- if (r < 0)
- return r;
- }
- /*
- * Closesessfinal only closes & doesn't finalize on dvd+r and bd-r.
- * Closedvdrbdfinal closes & finalizes dvd+r and bd-r.
- */
- if ((drive->mmctype == Mmcdvdplus || drive->mmctype == Mmcbd) &&
- drive->erasable == No) {
- if (vflag)
- fprint(2, "finalizing dvd+r or bd-r... "
- "(won't print `done').\n");
- return mmcxclose(drive, Closedvdrbdfinal, 0);
- }
- return 0;
- }
- static int
- mmcblank(Drive *drive, int quick)
- {
- uint8_t cmd[12];
- drive->nchange = -1; /* force reread toc */
- initcdb(cmd, sizeof cmd, ScmdBlank); /* blank cd-rw media */
- /* immediate bit is 0x10 */
- /* cmd[1] = 0 means blank the whole disc; = 1 just the header */
- cmd[1] = quick ? 0x01 : 0x00;
- return scsi(&drive->scsi, cmd, sizeof(cmd), cmd, 0, Snone);
- }
- static char*
- e(int status)
- {
- if(status < 0)
- return geterrstr();
- return nil;
- }
- static char*
- mmcctl(Drive *drive, int argc, char **argv)
- {
- char *cmd;
- if(argc < 1)
- return nil;
- cmd = argv[0];
- if(strcmp(cmd, "format") == 0)
- return e(format(drive));
- if(strcmp(cmd, "blank") == 0)
- return e(mmcblank(drive, 0));
- if(strcmp(cmd, "quickblank") == 0)
- return e(mmcblank(drive, 1));
- if(strcmp(cmd, "eject") == 0)
- return e(start(drive, 2));
- if(strcmp(cmd, "ingest") == 0)
- return e(start(drive, 3));
- return "bad arg";
- }
- static char*
- mmcsetspeed(Drive *drive, int r, int w)
- {
- char *rv;
- uint8_t cmd[12];
- initcdb(cmd, sizeof cmd, ScmdSetcdspeed);
- cmd[2] = r>>8;
- cmd[3] = r;
- cmd[4] = w>>8;
- cmd[5] = w;
- rv = e(scsi(&drive->scsi, cmd, sizeof(cmd), nil, 0, Snone));
- mmcgetspeed(drive);
- return rv;
- }
- static Dev mmcdev = {
- mmcopenrd,
- mmccreate,
- bufread,
- bufwrite,
- mmcclose,
- mmcgettoc,
- mmcfixate,
- mmcctl,
- mmcsetspeed,
- };
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