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- /*
- * 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
- {
- Pagesz = 255,
- Pagwrparams = 5, /* (cd|dvd)-r(w) device write parameters */
- Pagcache = 8,
- Pagcapmechsts = 0x2a,
- Invistrack = 0xff, /* the invisible & incomplete track */
- };
- static Dev mmcdev;
- typedef struct Mmcaux Mmcaux;
- struct Mmcaux {
- /* drive characteristics */
- uchar page05[Pagesz]; /* write parameters */
- int page05ok;
- int pagecmdsz;
- /* disc characteristics */
- ulong mmcnwa;
- int nropen;
- int nwopen;
- vlong ntotby;
- long ntotbk;
- };
- 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 ulong
- bige(void *p)
- {
- uchar *a;
- a = p;
- return (a[0]<<24)|(a[1]<<16)|(a[2]<<8)|(a[3]<<0);
- }
- static ushort
- biges(void *p)
- {
- uchar *a;
- a = p;
- return (a[0]<<8) | a[1];
- }
- ulong
- getnwa(Drive *drive)
- {
- Mmcaux *aux;
- aux = drive->aux;
- return aux->mmcnwa;
- }
- static void
- hexdump(void *v, int n)
- {
- int i;
- uchar *p;
- p = v;
- for(i=0; i<n; i++){
- print("%.2ux ", p[i]);
- if((i%8) == 7)
- print("\n");
- }
- if(i%8)
- print("\n");
- }
- static void
- initcdb(uchar *cdb, int len, int cmd)
- {
- memset(cdb, 0, len);
- cdb[0] = cmd;
- }
- //static uchar *
- //newcdb(int len, int cmd)
- //{
- // uchar *cdb;
- //
- // cdb = emalloc(len);
- // cdb[0] = cmd;
- // return cdb;
- //}
- /*
- * 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
- * uchar medium_type;
- * uchar device_specific;
- * uchar reserved[2];
- * ushort block_descriptor_length; // zero
- *
- * The format of the mode parameter (6) header is:
- * uchar mode_data_length; // of following bytes
- * uchar medium_type;
- * uchar device_specific;
- * uchar block_descriptor_length; // zero
- *
- * The format of the mode pages is:
- * uchar page_code_and_PS;
- * uchar page_len; // of following bytes
- * uchar 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)
- {
- uchar cmd[10], resp[512];
- int n, r;
- memset(cmd, 0, sizeof(cmd));
- cmd[0] = ScmdMsense10;
- cmd[2] = page;
- cmd[8] = 255; /* allocation length: buffer size */
- // print("get: sending cmd\n");
- // hexdump(cmd, 10);
- n = scsi(drive, 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);
- // print("get: got cmd\n");
- // hexdump(cmd, 10);
- // print("page\n");
- // hexdump(v, n);
- return n;
- }
- static int
- mmcgetpage6(Drive *drive, int page, void *v)
- {
- uchar cmd[6], resp[512];
- int n;
- memset(cmd, 0, sizeof(cmd));
- cmd[0] = ScmdMsense6;
- cmd[2] = page;
- cmd[4] = 255; /* allocation length */
- n = scsi(drive, 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)
- {
- uchar 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 */
- memset(cmd, 0, sizeof(cmd));
- cmd[0] = ScmdMselect10;
- cmd[1] = 0x10; /* format not vendor-specific */
- cmd[8] = len;
- // print("set: sending cmd\n");
- // hexdump(cmd, 10);
- // print("parameter list header\n");
- // hexdump(p, Mode10parmhdrlen);
- // print("page\n");
- // hexdump(p + Mode10parmhdrlen, len - Mode10parmhdrlen);
- n = scsi(drive, cmd, sizeof(cmd), p, len, Swrite);
- // print("set: got cmd\n");
- // hexdump(cmd, 10);
- free(p);
- if(n < len)
- return -1;
- return 0;
- }
- static int
- mmcsetpage6(Drive *drive, int page, void *v)
- {
- uchar 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]);
- memset(cmd, 0, sizeof(cmd));
- cmd[0] = ScmdMselect6;
- cmd[1] = 0x10; /* format not vendor-specific */
- cmd[4] = len;
- n = scsi(drive, 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)
- {
- uchar cmd[12];
- initcdb(cmd, sizeof cmd, ScmdCDstatus); /* mechanism status */
- return scsi(drive, cmd, sizeof(cmd), nil, 0, Sread);
- }
- void
- mmcgetspeed(Drive *drive)
- {
- int n, maxread, curread, maxwrite, curwrite;
- uchar buf[Pagesz];
- n = mmcgetpage(drive, Pagcapmechsts, buf); /* legacy page */
- 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(n < 22 || (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;
- uchar cmd[6], resp[Pagesz];
- initcdb(cmd, sizeof cmd, ScmdInq);
- cmd[3] = sizeof resp >> 8;
- cmd[4] = sizeof resp;
- n = scsi(drive, cmd, sizeof(cmd), resp, sizeof resp, Sread);
- if (n < 8)
- return -1;
- return resp[0] & 037;
- }
- static int
- start(Drive *drive, int code)
- {
- uchar cmd[6];
- initcdb(cmd, sizeof cmd, ScmdStart);
- cmd[4] = code;
- return scsi(drive, cmd, sizeof(cmd), cmd, 0, Snone);
- }
- Drive*
- mmcprobe(Scsi *scsi)
- {
- Mmcaux *aux;
- Drive *drive;
- uchar buf[Pagesz];
- int cap, n;
- if (vflag)
- print("mmcprobe: inquiry: %s\n", scsi->inquire);
- drive = emalloc(sizeof(Drive));
- drive->Scsi = *scsi;
- drive->Dev = mmcdev;
- aux = emalloc(sizeof(Mmcaux));
- drive->aux = aux;
- scsiready(drive);
- 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 {
- 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 */
- // print("read %d max %d\n", biges(buf+14), biges(buf+8));
- // print("write %d max %d\n", biges(buf+20), biges(buf+18));
- /* 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
- cap &= ~Cwrite;
- drive->cap = cap;
- mmcgetspeed(drive);
- /*
- * we can't actually control caching much.
- * see SBC-2 §6.3.3 but also MMC-6 §7.6.
- */
- n = mmcgetpage(drive, Pagcache, buf);
- if (n >= 3) {
- /* 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 drive;
- }
- static char *tracktype[] = {
- "audio cdda",
- "2 audio channels",
- "2",
- "3",
- "data, recorded uninterrupted",
- "data, recorded interrupted",
- };
- /* 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;
- ulong beg, size;
- uchar tmode;
- uchar cmd[10], resp[255];
- Mmcaux *aux;
- aux = drive->aux;
- memset(cmd, 0, sizeof(cmd));
- cmd[0] = 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, cmd, sizeof(cmd), resp, sizeof(resp), Sread);
- if(n < 28) {
- if(vflag)
- print("trackinfo %d fails n=%d: %r\n", t, n);
- return -1;
- }
- beg = bige(&resp[8]);
- size = bige(&resp[24]);
- tmode = resp[5] & 0x0D;
- // dmode = resp[6] & 0x0F;
- if(vflag)
- print("track %d type %d (%s)", t, tmode,
- (tmode < nelem(tracktype)? tracktype[tmode]: "**GOK**"));
- type = TypeNone;
- bs = BScdda;
- switch(tmode){
- case 0:
- type = TypeAudio;
- bs = BScdda;
- break;
- case 1: /* 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 4: /* data track, recorded uninterrupted */
- case 5: /* data track, recorded interrupted */
- /* treat 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;
- }
- drive->track[i].mtime = drive->changetime;
- drive->track[i].beg = beg;
- drive->track[i].end = beg+size;
- drive->track[i].type = type;
- drive->track[i].bs = bs;
- drive->track[i].size = (vlong)(size-2) * bs; /* -2: skip lead out */
- if(resp[6] & (1<<6)) { /* blank? */
- drive->track[i].type = TypeBlank;
- drive->writeok = 1;
- }
- if(vflag)
- print(" start %lud end %lud", beg, beg + size - 1);
- /* resp[6] & (1<<7) of zero: invisible track */
- /* t == getinvistrack(): invisible track */
- if(t == Invistrack || resp[7] & 1) { /* invis or nwa valid? */
- aux->mmcnwa = bige(&resp[12]);
- if (vflag)
- print(" nwa %lud", aux->mmcnwa);
- }
- 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)
- {
- uchar cmd[10];
- memset(cmd, 0, sizeof(cmd));
- cmd[0] = ScmdRTOC;
- cmd[1] = type; /* msf bit & reserved */
- cmd[2] = Tocfmttoc;
- cmd[6] = track; /* track/session */
- cmd[7] = nbytes>>8;
- cmd[8] = nbytes;
- return scsi(drive, cmd, sizeof(cmd), data, nbytes, Sread);
- }
- static int
- mmcreaddiscinfo(Drive *drive, void *data, int nbytes)
- {
- uchar cmd[10];
- int n;
- memset(cmd, 0, sizeof(cmd));
- cmd[0] = ScmdRdiscinfo;
- cmd[7] = nbytes>>8;
- cmd[8] = nbytes;
- n = scsi(drive, cmd, sizeof(cmd), data, nbytes, Sread);
- if(n < 24) {
- if(n >= 0)
- werrstr("rdiscinfo returns %d", n);
- return -1;
- }
- return n;
- }
- static Msf
- rdmsf(uchar *p)
- {
- Msf msf;
- msf.m = p[0];
- msf.s = p[1];
- msf.f = p[2];
- return msf;
- }
- static int
- getdiscinfo(Drive *drive, uchar resp[], int resplen)
- {
- int n;
- n = mmcreaddiscinfo(drive, resp, resplen);
- if(n < 3) {
- if (vflag)
- fprint(2, "read disc info failed\n");
- return n;
- }
- if (vflag)
- fprint(2, "read disc info succeeded\n");
- assert((resp[2] & 0340) == 0); /* data type 0 */
- drive->erasable = ((resp[2] & 0x10) != 0); /* -RW? */
- drive->erasableset = 1;
- return n;
- }
- static int
- getdvdstruct(Drive *drive)
- {
- int n, cat;
- uchar 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, cmd, sizeof(cmd), resp, sizeof resp, Sread);
- if (n < 7)
- return -1;
- // print("dvd structure:\n");
- // hexdump(resp, n);
- /* 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 = 0;
- /*
- * 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 = 1;
- else if (resp[6] & (1<<1)) /* recordable once? */
- drive->recordable = 1;
- else { /* factory-pressed disk */
- drive->blank = 0;
- drive->blankset = 1;
- }
- drive->erasableset = drive->recordableset = 1;
- drive->mmctype = (cat >= 8? Mmcdvdplus: Mmcdvdminus);
- return 0;
- }
- static int
- getbdstruct(Drive *drive)
- {
- int n;
- uchar cmd[12], resp[4100];
- initcdb(cmd, sizeof cmd, ScmdReadDVD); /* actually, read disc structure */
- cmd[1] = 1; /* media type: bd */
- cmd[7] = 0; /* format code: disc info */
- cmd[8] = sizeof resp >> 8; /* allocation length */
- cmd[9] = sizeof resp;
- n = scsi(drive, cmd, sizeof(cmd), resp, sizeof resp, Sread);
- /*
- * resp[0..1] is resp length.
- * resp[4+8..4+8+2] is bd type (disc type identifier):
- * BDO|BDW|BDR, MMC-6 §6.22.3.3.1. The above command should
- * fail on DVD drives, but some seem to ignore media type
- * and return successfully, so verify that it's a BD drive.
- */
- if (n < 4+8+3 || resp[4+8] != 'B' || resp[4+8+1] != 'D')
- return -1;
- if (vflag)
- fprint(2, "read disc structure (bd) succeeded\n");
- drive->erasable = drive->recordable = 0;
- switch (resp[4+8+2]) {
- case 'O':
- drive->blank = 0;
- drive->blankset = 1;
- break;
- case 'R': /* Recordable */
- drive->recordable = 1;
- break;
- case 'W': /* reWritable */
- drive->erasable = 1;
- break;
- default:
- fprint(2, "%s: unknown bd type BD%c\n", argv0, resp[4+8+2]);
- return -1;
- }
- drive->erasableset = drive->recordableset = 1;
- drive->mmctype = Mmcbd;
- return 0;
- }
- /*
- * infer endings from the beginnings of other tracks.
- */
- static void
- mmcinfertracks(Drive *drive, int first, int last)
- {
- int i;
- uchar resp[1024];
- ulong tot;
- Track *t;
- if (vflag)
- print("inferring tracks\n");
- for(i = first; i <= last; i++) {
- memset(resp, 0, sizeof(resp));
- if(mmcreadtoc(drive, 0, i, resp, sizeof(resp)) < 0)
- 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((long)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\n");
- if(resp[6])
- tot = bige(resp+8);
- 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) * (vlong)t->bs;
- }
- }
- /* this gets called a lot from main.c's 9P routines */
- static int
- mmcgettoc(Drive *drive)
- {
- int i, n, first, last;
- uchar resp[1024];
- Mmcaux *aux;
- /*
- * 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)
- return 0;
- /*
- * the disc in the drive may have just been changed,
- * so rescan it and relearn all about it.
- */
- drive->ntrack = 0;
- drive->nameok = 0;
- drive->nchange = drive->Scsi.nchange;
- drive->changetime = drive->Scsi.changetime;
- drive->writeok = drive->erasable = drive->recordable = drive->blank = 0;
- drive->erasableset = drive->recordableset = drive->blankset = 0;
- aux = drive->aux;
- aux->mmcnwa = 0;
- 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));
- }
- /*
- * TODO: set read ahead, MMC-6 §6.37, seems to control caching.
- */
- /*
- * find number of tracks
- */
- if((n = mmcreadtoc(drive, Msfbit, 0, resp, sizeof(resp))) < 4) {
- /*
- * on a blank disc in a cd-rw, use readdiscinfo
- * 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]);
- first = resp[3];
- last = resp[6];
- if(vflag)
- print("blank disc %d %d\n", first, last);
- /* the assumption of blankness may be unwarranted */
- drive->writeok = drive->blank = drive->blankset = 1;
- } else {
- first = resp[2];
- last = resp[3];
- 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;
- }
- }
- drive->mmctype = Mmcnone;
- drive->dvdtype = nil;
- getdvdstruct(drive);
- getbdstruct(drive);
- if (drive->mmctype == Mmcnone)
- drive->mmctype = Mmccd; /* by default */
- if (drive->recordable || drive->erasable)
- drive->writeok = 1;
- if (vflag) {
- fprint(2, "writeok %d", drive->writeok);
- /* drive->blank is never used and hard to figure out */
- // if (drive->blankset)
- // fprint(2, " blank %d", drive->blank);
- if (drive->recordableset)
- fprint(2, " recordable %d", drive->recordable);
- if (drive->erasableset)
- fprint(2, " erasable %d", drive->erasable);
- fprint(2, "\n");
- print("first %d last %d\n", first, 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) /* CDR drives are easy */
- for(i = first; i <= last; i++)
- mmctrackinfo(drive, i, i - first);
- else
- /*
- * otherwise we need to infer endings from the
- * beginnings of other tracks.
- */
- mmcinfertracks(drive, first, last);
- drive->firsttrack = first;
- drive->ntrack = last+1-first;
- return 0;
- }
- /*
- * this uses page 5, which is optional.
- */
- static int
- mmcsetbs(Drive *drive, int bs)
- {
- uchar *p;
- Mmcaux *aux;
- aux = drive->aux;
- if (!aux->page05ok)
- return 0; /* harmless; assume 2k */
- p = aux->page05;
- /*
- * establish defaults.
- * p[2] & 0xf is write type.
- * p[3] & 0xf is track mode.
- * p[4] & 0xf is data-block type.
- * p[8] is session format.
- */
- p[0] &= 077; /* clear reserved bits, MMC-6 §7.2.3 */
- p[2] = Bufe | Wttrackonce;
- // if(xflag)
- // p[2] |= 0x10; /* test-write */
- p[3] &= ~0xf;
- p[3] |= 5; /* dvd default track mode */
- p[4] = 0x08; /* mode 1 CD-ROM: 2K user data */
- p[8] = 0; /* session format, CD-DA or -ROM (data) */
- switch(drive->mmctype) {
- case Mmccd:
- p[3] = (p[3] & ~0x07)|0x04; /* data track, uninterrupted */
- switch(bs){
- case BScdrom:
- break;
- case BScdda:
- /* 2 audio channels without pre-emphasis */
- p[3] = (p[3] & ~0x07)|0x00;
- p[4] = 0x00; /* raw data */
- break;
- case BScdxa:
- p[4] = 0x09; /* mode 2: 2336 bytes user data */
- p[8] = 0x20; /* session format CD-ROM XA */
- break;
- default:
- fprint(2, "%s: unknown CD type; bs %d\n", argv0, bs);
- assert(0);
- }
- break;
- case Mmcdvdminus:
- case Mmcdvdplus:
- case Mmcbd:
- 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;
- }
- /* off is a block number */
- static long
- mmcread(Buf *buf, void *v, long nblock, long off)
- {
- int bs;
- long n, nn;
- uchar 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;
- /*
- * `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).
- */
- memset(cmd, 0, sizeof(cmd));
- if (drive->type == TypeCD && drive->mmctype == Mmccd && bs != BScdrom) {
- cmd[0] = ScmdReadcd;
- cmd[2] = off>>24;
- cmd[3] = off>>16;
- cmd[4] = off>>8;
- cmd[5] = off>>0;
- 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 */
- cmd[0] = ScmdRead12;
- cmd[2] = off>>24;
- cmd[3] = off>>16;
- cmd[4] = off>>8;
- cmd[5] = off>>0;
- cmd[6] = nblock>>24;
- cmd[7] = nblock>>16;
- cmd[8] = nblock>>8;
- cmd[9] = nblock;
- // cmd[10] = 0x80; /* streaming */
- }
- n = nblock*bs;
- nn = scsi(drive, 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, BDNblock);
- o->buf->otrack = o;
- aux->nropen++;
- return o;
- }
- static int
- format(Drive *drive)
- {
- ulong nblks, blksize;
- uchar *fmtdesc;
- uchar cmd[6], parms[4+8];
- if (drive->recordable && drive->mmctype != Mmcbd) {
- werrstr("don't format write-once cd or dvd media");
- return -1;
- }
- initcdb(cmd, sizeof cmd, ScmdFormat); /* format unit */
- cmd[1] = 0x10 | 1; /* format data, mmc format code */
- memset(parms, 0, sizeof parms);
- /* format list header */
- parms[1] = 2; /* immediate return; don't wait */
- parms[3] = 8; /* format descriptor length */
- fmtdesc = parms + 4;
- fmtdesc[4] = 0; /* full format */
- nblks = 0;
- blksize = BScdrom;
- 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 = ~0ul;
- blksize = 0;
- break;
- }
- PUTBELONG(fmtdesc, nblks);
- PUTBE24(fmtdesc + 5, blksize);
- // print("format parameters:\n");
- // hexdump(parms, sizeof parms);
- if(vflag)
- print("%lld ns: format\n", nsec());
- return scsi(drive, cmd, sizeof(cmd), parms, sizeof parms, Swrite);
- }
- static long
- mmcxwrite(Otrack *o, void *v, long nblk)
- {
- uchar cmd[10];
- Mmcaux *aux;
- assert(o->omode == OWRITE);
- aux = o->drive->aux;
- if (aux->mmcnwa == 0 && scsiready(o->drive) < 0) {
- werrstr("device not ready to write");
- return -1;
- }
- aux->ntotby += nblk*o->track->bs;
- aux->ntotbk += nblk;
- memset(cmd, 0, sizeof(cmd));
- cmd[0] = 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)
- print("%lld ns: write %ld at 0x%lux\n",
- nsec(), nblk, aux->mmcnwa);
- aux->mmcnwa += nblk;
- return scsi(o->drive, cmd, sizeof(cmd), v, nblk*o->track->bs, Swrite);
- }
- static long
- mmcwrite(Buf *buf, void *v, long nblk, long)
- {
- return mmcxwrite(buf->otrack, v, nblk);
- }
- static int
- getinvistrack(Drive *drive)
- {
- int n;
- uchar 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, 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]);
- return resp[2];
- }
- static Otrack*
- mmccreate(Drive *drive, int type)
- {
- int bs, invis;
- 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;
- }
- invis = getinvistrack(drive);
- if (invis < 0)
- invis = Invistrack;
- /* comment out the returns for now; it should be no big deal - geoff */
- if(mmctrackinfo(drive, invis, Maxtrack)) {
- if (vflag)
- fprint(2, "mmccreate: mmctrackinfo for invis track %d"
- " failed: %r\n", invis);
- werrstr("CD not writable");
- // return nil;
- }
- if(mmcsetbs(drive, bs) < 0) {
- werrstr("cannot set bs mode");
- // return nil;
- }
- if(mmctrackinfo(drive, invis, Maxtrack)) {
- if (vflag)
- fprint(2, "mmccreate: mmctrackinfo for invis track %d"
- " (2) failed: %r\n", invis);
- werrstr("CD not writable 2");
- // 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, BDNblock);
- o->buf->otrack = o;
- aux->nwopen++;
- if(vflag)
- print("mmcinit: nwa = 0x%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)
- {
- uchar cmd[10];
- memset(cmd, 0, sizeof(cmd));
- cmd[0] = ScmdClosetracksess;
- /* cmd[1] & 1 is the immediate bit */
- cmd[2] = clf; /* close function */
- if(clf == Closetrack)
- cmd[5] = trackno;
- return scsi(drive, cmd, sizeof(cmd), cmd, 0, Snone);
- }
- /* flush drive cache, close current track */
- void
- mmcsynccache(Drive *drive)
- {
- int invis;
- uchar cmd[10];
- Mmcaux *aux;
- memset(cmd, 0, sizeof(cmd));
- cmd[0] = ScmdSynccache; /* flush */
- scsi(drive, cmd, sizeof(cmd), cmd, 0, Snone);
- if(vflag) {
- aux = drive->aux;
- print("mmcsynccache: bytes = %lld blocks = %ld, mmcnwa 0x%luX\n",
- aux->ntotby, aux->ntotbk, aux->mmcnwa);
- }
- invis = getinvistrack(drive);
- if (invis < 0)
- invis = Invistrack;
- /*
- * rsc: seems not to work on some drives.
- * so ignore return code & don't issue on dvd+rw.
- */
- if(drive->mmctype != Mmcdvdplus || !drive->erasable) {
- if (vflag)
- fprint(2, "closing invisible track %d (not dvd+rw)...\n",
- invis);
- mmcxclose(drive, Closetrack, invis);
- if (vflag)
- fprint(2, "... done.\n");
- }
- }
- /*
- * close the open track `o'.
- */
- static void
- mmcclose(Otrack *o)
- {
- Mmcaux *aux;
- static uchar 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)
- {
- uchar *p;
- Mmcaux *aux;
- /* page 5 is legacy and now read-only; see MMC-6 §7.5.4.1 */
- aux = drive->aux;
- p = aux->page05;
- /*
- * p[3] is multi-session / fp / copy / track mode.
- * zero multi-session field: next session not allowed.
- */
- p[3] &= ~0xC0;
- 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) {
- 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) {
- 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)
- {
- uchar cmd[12];
- drive->nchange = -1; /* force reread toc */
- memset(cmd, 0, sizeof(cmd));
- cmd[0] = 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, 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;
- uchar cmd[12];
- memset(cmd, 0, sizeof(cmd));
- cmd[0] = ScmdSetcdspeed;
- cmd[2] = r>>8;
- cmd[3] = r;
- cmd[4] = w>>8;
- cmd[5] = w;
- rv = e(scsi(drive, 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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