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;
}
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;
}
