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Ticket 93: write speeds from ACh GET PERFORMANCE, Type 03h, DVD media capacity

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This commit is contained in:
Thomas Schmitt 2006-12-25 19:00:26 +00:00
parent d4711abba8
commit 979e35d979
6 changed files with 141 additions and 14 deletions
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2
cdrskin/cdrskin_timestamp.h
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@ -1 +1 @@
#define Cdrskin_timestamP "2006.12.25.185747"
#define Cdrskin_timestamP "2006.12.25.190055"

4
libburn/libdax_msgs.h
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@ -342,6 +342,10 @@ Range "scdbackup" : 0x00020000 to 0x0002ffff
0x00020122 (FATAL,HIGH) = SCSI error on format_unit
0x00020123 (SORRY,HIGH) = DVD Media are unsuitable for desired track type
0x00020124 (SORRY,HIGH) = SCSI error on set_streaming
0x00020125 (SORRY,HIGH) = Write start address not supported
0x00020126 (SORRY,HIGH) = Write start address not properly aligned
0x00020127 (NOTE,HIGH) = Write start address is ...
0x00020128 (FATAL,HIGH) = Unsupported inquiry_type with mmc_get_performance
libdax_audioxtr:
0x00020200 (SORRY,HIGH) = Cannot open audio source file

116
libburn/mmc.c
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@ -94,6 +94,10 @@ static unsigned char MMC_FORMAT_UNIT[] = { 0x04, 0x11, 0, 0, 0, 0 };
static unsigned char MMC_SET_STREAMING[] =
{ 0xB6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
/* ts A61225 :
To obtain write speed descriptors (command can do other things too) */
static unsigned char MMC_GET_PERFORMANCE[] =
{ 0xAC, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
static int mmc_function_spy_do_tell = 0;
@ -878,7 +882,7 @@ int mmc_set_streaming(struct burn_drive *d, int r_speed, int w_speed)
char msg[160];
unsigned char *pd;
mmc_function_spy("mmc_format_unit");
mmc_function_spy("mmc_set_streaming");
if (r_speed <= 0)
r_speed = 0x10000000; /* ~ 2 TB/s */
@ -901,10 +905,16 @@ int mmc_set_streaming(struct burn_drive *d, int r_speed, int w_speed)
*/
pd[0] = 0; /* WRC=0 (Default Rotation Control), RDD=Exact=RA=0 */
/* >>> This is computed from 4.7e9. Need to obtain media capacity.*/
/* Default computed from 4.7e9 */
end_lba = 2294921 - 1;
/* overstatement (gross or not) works for my NEC, but not for my LG */
/* end_lba = 0x10000000; / * ~ 2 TB */
if (d->mdata->max_end_lba > 0)
end_lba = d->mdata->max_end_lba - 1;
sprintf(msg, "mmc_set_streaming: end_lba=%lu , r=%d , w=%d",
end_lba, r_speed, w_speed);
libdax_msgs_submit(libdax_messenger, d->global_index, 0x00000002,
LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_ZERO,
msg, 0, 0);
/* start_lba is 0 , 1000 = 1 second as base time for data rate */
for (b = 0; b < 4 ; b++) {
@ -1188,6 +1198,104 @@ int mmc_format_unit(struct burn_drive *d)
}
/* ts A61225 */
int mmc_get_write_performance(struct burn_drive *d)
{
struct buffer buf;
int len, i, b, pass, was_exact_bit = 0, max_descr, num_descr;
int exact_bit, read_speed, write_speed;
/* if this call delivers usable data then they should override
previously recorded min/max speed and not compete with them */
int min_write_speed = 0x7fffffff, max_write_speed = 0;
int min_read_speed = 0x7fffffff, max_read_speed = 0;
struct command c;
unsigned long end_lba;
unsigned char *pd;
/* A61225 : 1 = report about speed descriptors */
static int speed_debug = 0;
mmc_function_spy("mmc_get_write_performance");
memcpy(c.opcode, MMC_GET_PERFORMANCE, sizeof(MMC_GET_PERFORMANCE));
max_descr = ( BUFFER_SIZE - 8 ) / 16 - 1;
/* >>> future: maintain a list of write descriptors
if (max_descr > d->max_write_descr - d->num_write_descr)
max_descr = d->max_write_descr;
*/
c.opcode[8] = ( max_descr >> 8 ) & 0xff;
c.opcode[9] = ( max_descr >> 0 ) & 0xff;
c.opcode[10] = 3;
c.retry = 1;
c.oplen = sizeof(MMC_GET_PERFORMANCE);
c.page = &buf;
c.page->sectors = 0;
c.page->bytes = 0;
c.dir = FROM_DRIVE;
d->issue_command(d, &c);
if (c.error)
return 0;
len = (c.page->data[0] << 24)
+ (c.page->data[1] << 16)
+ (c.page->data[2] << 8)
+ c.page->data[3];
if (len<12)
return 0;
pd = c.page->data;
num_descr = ( len - 4 ) / 16;
if (num_descr > max_descr)
num_descr = max_descr;
for (pass = 0; pass < 2; pass++) for (i = 0; i < num_descr; i++) {
exact_bit = !!(pd[8 + i*16] & 2);
end_lba = read_speed = write_speed = 0;
for (b = 0; b < 4 ; b++) {
end_lba += pd[8 + i*16 + 4 + b] << (24 - 8 * b);
read_speed += pd[8 + i*16 + 8 + b] << (24 - 8 * b);
write_speed += pd[8 + i*16 + 12 + b] << (24 - 8 * b);
}
if (end_lba > 0x7ffffffe)
end_lba = 0x7ffffffe;
if (pass == 0 && speed_debug)
fprintf(stderr,
"LIBBURN_DEBUG: kB/s: write=%d read=%d end=%lu exact=%d\n",
write_speed, read_speed, end_lba, exact_bit);
if (pass == 0 && !exact_bit)
continue;
if (pass == 1 && was_exact_bit)
continue;
was_exact_bit |= exact_bit;
if (end_lba > d->mdata->max_end_lba)
d->mdata->max_end_lba = end_lba;
if (end_lba < d->mdata->min_end_lba)
d->mdata->min_end_lba = end_lba;
if (write_speed < min_write_speed)
min_write_speed = write_speed;
if (write_speed > max_write_speed)
max_write_speed = write_speed;
if (read_speed < min_read_speed)
min_read_speed = read_speed;
if (read_speed > max_read_speed)
max_read_speed = read_speed;
}
if (min_write_speed < 0x7fffffff)
d->mdata->min_write_speed = min_write_speed;
if (max_write_speed > 0)
d->mdata->max_write_speed = max_write_speed;
/* there is no mdata->min_read_speed yet
if (min_read_speed < 0x7fffffff)
d->mdata->min_read_speed = min_read_speed;
*/
if (max_read_speed > 0)
d->mdata->max_read_speed = max_read_speed;
return num_descr;
}
/* ts A61021 : the mmc specific part of sg.c:enumerate_common()
*/
int mmc_setup_drive(struct burn_drive *d)

3
libburn/mmc.h
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@ -51,4 +51,7 @@ int mmc_read_buffer_capacity(struct burn_drive *d);
*/
int mmc_setup_drive(struct burn_drive *d);
/* ts A61225 : obtain write speed descriptors via ACh GET PERFORMANCE */
int mmc_get_write_performance(struct burn_drive *d);
#endif /*__MMC*/

17
libburn/spc.c
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@ -132,7 +132,7 @@ void spc_sense_caps(struct burn_drive *d)
{
struct buffer buf;
struct scsi_mode_data *m;
int size, page_length, num_write_speeds = 0, i, speed;
int size, page_length, num_write_speeds = 0, i, speed, ret;
unsigned char *page;
struct command c;
@ -174,7 +174,6 @@ void spc_sense_caps(struct burn_drive *d)
m->cdr_write = page[3] & 1;
m->c2_pointers = page[5] & 16;
m->valid = 1;
m->underrun_proof = page[4] & 128;
/* ts A61021 : these fields are marked obsolete in MMC 3 */
@ -187,6 +186,11 @@ void spc_sense_caps(struct burn_drive *d)
/* ts A61021 : New field to be set by atip (or following MMC-3 info) */
m->min_write_speed = m->max_write_speed;
/* ts A61225 : for ACh GET PERFORMANCE, Type 03h */
m->min_end_lba = 0x7fffffff;
m->max_end_lba = 0;
m->valid = 1;
/* ts A61225 : end of MMC-1 , begin of MMC-3 */
if (page_length < 32) /* no write speed descriptors ? */
@ -216,7 +220,14 @@ void spc_sense_caps(struct burn_drive *d)
if (speed_debug)
fprintf(stderr,
"LIBBURN_DEBUG: min_write_speed = %d , max_write_speed = %d\n",
"LIBBURN_DEBUG: 5Ah,2Ah min_write_speed = %d , max_write_speed = %d\n",
m->min_write_speed, m->max_write_speed);
ret = mmc_get_write_performance(d);
if (ret > 0 && speed_debug)
fprintf(stderr,
"LIBBURN_DEBUG: ACh min_write_speed = %d , max_write_speed = %d\n",
m->min_write_speed, m->max_write_speed);
}

13
libburn/write.c
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@ -925,14 +925,15 @@ int burn_disc_setup_dvd_plus_rw(struct burn_write_opts *o,
d->busy = BURN_DRIVE_WRITING;
}
d->nwa = 0;
if (o->start_byte >= 0)
if (o->start_byte >= 0) {
d->nwa = o->start_byte / 2048;
sprintf(msg, "Write start address is %d * 2048", d->nwa);
libdax_msgs_submit(libdax_messenger, d->global_index,
0x00020127,
LIBDAX_MSGS_SEV_NOTE, LIBDAX_MSGS_PRIO_HIGH,
msg, 0,0);
sprintf(msg, "Write start address is %d * 2048", d->nwa);
libdax_msgs_submit(libdax_messenger, d->global_index,
0x00020127,
LIBDAX_MSGS_SEV_NOTE, LIBDAX_MSGS_PRIO_HIGH,
msg, 0,0);
}
/* >>> perform OPC if needed */;