Scsi*
openscsi(char *dev)
{
Scsi *s;
int rawfd, ctlfd, l, n;
char *name, *p, buf[512];
l = strlen(dev)+1+3+1;
name = malloc(l);
if(name == nil)
return nil;
snprint(name, l, "%s/raw", dev);
if((rawfd = open(name, ORDWR)) < 0) {
free(name);
return nil;
}
snprint(name, l, "%s/ctl", dev);
if((ctlfd = open(name, ORDWR)) < 0) {
free(name);
Error:
close(rawfd);
return nil;
}
free(name);
n = readn(ctlfd, buf, sizeof buf);
close(ctlfd);
if(n <= 0)
goto Error;
if(strncmp(buf, "inquiry ", 8) != 0 || (p = strchr(buf, '\n')) == nil)
goto Error;
*p = '\0';
if((p = strdup(buf+8)) == nil)
goto Error;
s = malloc(sizeof(*s));
if(s == nil) {
Error1:
free(p);
goto Error;
}
memset(s, 0, sizeof(*s));
s->rawfd = rawfd;
s->inquire = p;
s->changetime = time(0);
if(scsiready(s) < 0)
goto Error1;
return s;
}
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 {
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 */
// 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 {
if (vflag)
fprint(2, "no Pagwrparams mode page!\n");
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;
}
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;
}
Scsi*
openscsi(char *dev)
{
Scsi *s;
int rawfd, ctlfd, l, n;
char *name, *p, buf[512];
l = strlen(dev)+1+3+1;
name = malloc(l);
if(name == nil)
return nil;
snprint(name, l, "%s/raw", dev);
if((rawfd = open(name, ORDWR)) < 0) {
free(name);
return nil;
}
snprint(name, l, "%s/ctl", dev);
if((ctlfd = open(name, ORDWR)) < 0) {
Error:
free(name);
close(rawfd);
return nil;
}
n = readn(ctlfd, buf, sizeof buf);
close(ctlfd);
if(n <= 0) {
if(n == 0)
werrstr("eof on %s", name);
goto Error;
}
if(strncmp(buf, "inquiry ", 8) != 0 || (p = strchr(buf, '\n')) == nil) {
werrstr("inquiry mal-formatted in %s", name);
goto Error;
}
*p = '\0';
free(name);
name = nil;
if((p = strdup(buf+8)) == nil)
goto Error;
s = mallocz(sizeof(*s), 1);
if(s == nil) {
Error1:
free(p);
goto Error;
}
s->rawfd = rawfd;
s->inquire = p;
s->changetime = time(0);
if(scsiready(s) < 0)
goto Error1;
return s;
}
