330 lines
8.4 KiB
C
330 lines
8.4 KiB
C
|
/* -*-linux-c-*-
|
||
|
|
|
||
|
|
* vendor-specific code for SCSI CD-ROM's goes here.
|
||
|
|
*
|
||
|
|
* This is needed becauce most of the new features (multisession and
|
||
|
|
* the like) are too new to be included into the SCSI-II standard (to
|
||
|
|
* be exact: there is'nt anything in my draft copy).
|
||
|
|
*
|
||
|
|
* Aug 1997: Ha! Got a SCSI-3 cdrom spec across my fingers. SCSI-3 does
|
||
|
|
* multisession using the READ TOC command (like SONY).
|
||
|
|
*
|
||
|
|
* Rearranged stuff here: SCSI-3 is included allways, support
|
||
|
|
* for NEC/TOSHIBA/HP commands is optional.
|
||
|
|
*
|
||
|
|
* Gerd Knorr <kraxel@cs.tu-berlin.de>
|
||
|
|
*
|
||
|
|
* --------------------------------------------------------------------------
|
||
|
|
*
|
||
|
|
* support for XA/multisession-CD's
|
||
|
|
*
|
||
|
|
* - NEC: Detection and support of multisession CD's.
|
||
|
|
*
|
||
|
|
* - TOSHIBA: Detection and support of multisession CD's.
|
||
|
|
* Some XA-Sector tweaking, required for older drives.
|
||
|
|
*
|
||
|
|
* - SONY: Detection and support of multisession CD's.
|
||
|
|
* added by Thomas Quinot <thomas@cuivre.freenix.fr>
|
||
|
|
*
|
||
|
|
* - PIONEER, HITACHI, PLEXTOR, MATSHITA, TEAC, PHILIPS: known to
|
||
|
|
* work with SONY (SCSI3 now) code.
|
||
|
|
*
|
||
|
|
* - HP: Much like SONY, but a little different... (Thomas)
|
||
|
|
* HP-Writers only ??? Maybe other CD-Writers work with this too ?
|
||
|
|
* HP 6020 writers now supported.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/config.h>
|
||
|
|
#include <linux/cdrom.h>
|
||
|
|
#include <linux/errno.h>
|
||
|
|
#include <linux/string.h>
|
||
|
|
#include <linux/bcd.h>
|
||
|
|
#include <linux/blkdev.h>
|
||
|
|
|
||
|
|
#include <scsi/scsi.h>
|
||
|
|
#include <scsi/scsi_cmnd.h>
|
||
|
|
#include <scsi/scsi_device.h>
|
||
|
|
#include <scsi/scsi_host.h>
|
||
|
|
#include <scsi/scsi_ioctl.h>
|
||
|
|
|
||
|
|
#include "sr.h"
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
#define DEBUG
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* here are some constants to sort the vendors into groups */
|
||
|
|
|
||
|
|
#define VENDOR_SCSI3 1 /* default: scsi-3 mmc */
|
||
|
|
|
||
|
|
#define VENDOR_NEC 2
|
||
|
|
#define VENDOR_TOSHIBA 3
|
||
|
|
#define VENDOR_WRITER 4 /* pre-scsi3 writers */
|
||
|
|
|
||
|
|
#define VENDOR_TIMEOUT 30*HZ
|
||
|
|
|
||
|
|
void sr_vendor_init(Scsi_CD *cd)
|
||
|
|
{
|
||
|
|
#ifndef CONFIG_BLK_DEV_SR_VENDOR
|
||
|
|
cd->vendor = VENDOR_SCSI3;
|
||
|
|
#else
|
||
|
|
char *vendor = cd->device->vendor;
|
||
|
|
char *model = cd->device->model;
|
||
|
|
|
||
|
|
/* default */
|
||
|
|
cd->vendor = VENDOR_SCSI3;
|
||
|
|
if (cd->readcd_known)
|
||
|
|
/* this is true for scsi3/mmc drives - no more checks */
|
||
|
|
return;
|
||
|
|
|
||
|
|
if (cd->device->type == TYPE_WORM) {
|
||
|
|
cd->vendor = VENDOR_WRITER;
|
||
|
|
|
||
|
|
} else if (!strncmp(vendor, "NEC", 3)) {
|
||
|
|
cd->vendor = VENDOR_NEC;
|
||
|
|
if (!strncmp(model, "CD-ROM DRIVE:25", 15) ||
|
||
|
|
!strncmp(model, "CD-ROM DRIVE:36", 15) ||
|
||
|
|
!strncmp(model, "CD-ROM DRIVE:83", 15) ||
|
||
|
|
!strncmp(model, "CD-ROM DRIVE:84 ", 16)
|
||
|
|
#if 0
|
||
|
|
/* my NEC 3x returns the read-raw data if a read-raw
|
||
|
|
is followed by a read for the same sector - aeb */
|
||
|
|
|| !strncmp(model, "CD-ROM DRIVE:500", 16)
|
||
|
|
#endif
|
||
|
|
)
|
||
|
|
/* these can't handle multisession, may hang */
|
||
|
|
cd->cdi.mask |= CDC_MULTI_SESSION;
|
||
|
|
|
||
|
|
} else if (!strncmp(vendor, "TOSHIBA", 7)) {
|
||
|
|
cd->vendor = VENDOR_TOSHIBA;
|
||
|
|
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* small handy function for switching block length using MODE SELECT,
|
||
|
|
* used by sr_read_sector() */
|
||
|
|
|
||
|
|
int sr_set_blocklength(Scsi_CD *cd, int blocklength)
|
||
|
|
{
|
||
|
|
unsigned char *buffer; /* the buffer for the ioctl */
|
||
|
|
struct packet_command cgc;
|
||
|
|
struct ccs_modesel_head *modesel;
|
||
|
|
int rc, density = 0;
|
||
|
|
|
||
|
|
#ifdef CONFIG_BLK_DEV_SR_VENDOR
|
||
|
|
if (cd->vendor == VENDOR_TOSHIBA)
|
||
|
|
density = (blocklength > 2048) ? 0x81 : 0x83;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
buffer = (unsigned char *) kmalloc(512, GFP_KERNEL | GFP_DMA);
|
||
|
|
if (!buffer)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
#ifdef DEBUG
|
||
|
|
printk("%s: MODE SELECT 0x%x/%d\n", cd->cdi.name, density, blocklength);
|
||
|
|
#endif
|
||
|
|
memset(&cgc, 0, sizeof(struct packet_command));
|
||
|
|
cgc.cmd[0] = MODE_SELECT;
|
||
|
|
cgc.cmd[1] = (1 << 4);
|
||
|
|
cgc.cmd[4] = 12;
|
||
|
|
modesel = (struct ccs_modesel_head *) buffer;
|
||
|
|
memset(modesel, 0, sizeof(*modesel));
|
||
|
|
modesel->block_desc_length = 0x08;
|
||
|
|
modesel->density = density;
|
||
|
|
modesel->block_length_med = (blocklength >> 8) & 0xff;
|
||
|
|
modesel->block_length_lo = blocklength & 0xff;
|
||
|
|
cgc.buffer = buffer;
|
||
|
|
cgc.buflen = sizeof(*modesel);
|
||
|
|
cgc.data_direction = DMA_TO_DEVICE;
|
||
|
|
cgc.timeout = VENDOR_TIMEOUT;
|
||
|
|
if (0 == (rc = sr_do_ioctl(cd, &cgc))) {
|
||
|
|
cd->device->sector_size = blocklength;
|
||
|
|
}
|
||
|
|
#ifdef DEBUG
|
||
|
|
else
|
||
|
|
printk("%s: switching blocklength to %d bytes failed\n",
|
||
|
|
cd->cdi.name, blocklength);
|
||
|
|
#endif
|
||
|
|
kfree(buffer);
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* This function gets called after a media change. Checks if the CD is
|
||
|
|
multisession, asks for offset etc. */
|
||
|
|
|
||
|
|
int sr_cd_check(struct cdrom_device_info *cdi)
|
||
|
|
{
|
||
|
|
Scsi_CD *cd = cdi->handle;
|
||
|
|
unsigned long sector;
|
||
|
|
unsigned char *buffer; /* the buffer for the ioctl */
|
||
|
|
struct packet_command cgc;
|
||
|
|
int rc, no_multi;
|
||
|
|
|
||
|
|
if (cd->cdi.mask & CDC_MULTI_SESSION)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
buffer = (unsigned char *) kmalloc(512, GFP_KERNEL | GFP_DMA);
|
||
|
|
if (!buffer)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
sector = 0; /* the multisession sector offset goes here */
|
||
|
|
no_multi = 0; /* flag: the drive can't handle multisession */
|
||
|
|
rc = 0;
|
||
|
|
|
||
|
|
memset(&cgc, 0, sizeof(struct packet_command));
|
||
|
|
|
||
|
|
switch (cd->vendor) {
|
||
|
|
|
||
|
|
case VENDOR_SCSI3:
|
||
|
|
cgc.cmd[0] = READ_TOC;
|
||
|
|
cgc.cmd[8] = 12;
|
||
|
|
cgc.cmd[9] = 0x40;
|
||
|
|
cgc.buffer = buffer;
|
||
|
|
cgc.buflen = 12;
|
||
|
|
cgc.quiet = 1;
|
||
|
|
cgc.data_direction = DMA_FROM_DEVICE;
|
||
|
|
cgc.timeout = VENDOR_TIMEOUT;
|
||
|
|
rc = sr_do_ioctl(cd, &cgc);
|
||
|
|
if (rc != 0)
|
||
|
|
break;
|
||
|
|
if ((buffer[0] << 8) + buffer[1] < 0x0a) {
|
||
|
|
printk(KERN_INFO "%s: Hmm, seems the drive "
|
||
|
|
"doesn't support multisession CD's\n", cd->cdi.name);
|
||
|
|
no_multi = 1;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
sector = buffer[11] + (buffer[10] << 8) +
|
||
|
|
(buffer[9] << 16) + (buffer[8] << 24);
|
||
|
|
if (buffer[6] <= 1) {
|
||
|
|
/* ignore sector offsets from first track */
|
||
|
|
sector = 0;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
#ifdef CONFIG_BLK_DEV_SR_VENDOR
|
||
|
|
case VENDOR_NEC:{
|
||
|
|
unsigned long min, sec, frame;
|
||
|
|
cgc.cmd[0] = 0xde;
|
||
|
|
cgc.cmd[1] = 0x03;
|
||
|
|
cgc.cmd[2] = 0xb0;
|
||
|
|
cgc.buffer = buffer;
|
||
|
|
cgc.buflen = 0x16;
|
||
|
|
cgc.quiet = 1;
|
||
|
|
cgc.data_direction = DMA_FROM_DEVICE;
|
||
|
|
cgc.timeout = VENDOR_TIMEOUT;
|
||
|
|
rc = sr_do_ioctl(cd, &cgc);
|
||
|
|
if (rc != 0)
|
||
|
|
break;
|
||
|
|
if (buffer[14] != 0 && buffer[14] != 0xb0) {
|
||
|
|
printk(KERN_INFO "%s: Hmm, seems the cdrom "
|
||
|
|
"doesn't support multisession CD's\n",
|
||
|
|
cd->cdi.name);
|
||
|
|
no_multi = 1;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
min = BCD2BIN(buffer[15]);
|
||
|
|
sec = BCD2BIN(buffer[16]);
|
||
|
|
frame = BCD2BIN(buffer[17]);
|
||
|
|
sector = min * CD_SECS * CD_FRAMES + sec * CD_FRAMES + frame;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
case VENDOR_TOSHIBA:{
|
||
|
|
unsigned long min, sec, frame;
|
||
|
|
|
||
|
|
/* we request some disc information (is it a XA-CD ?,
|
||
|
|
* where starts the last session ?) */
|
||
|
|
cgc.cmd[0] = 0xc7;
|
||
|
|
cgc.cmd[1] = 0x03;
|
||
|
|
cgc.buffer = buffer;
|
||
|
|
cgc.buflen = 4;
|
||
|
|
cgc.quiet = 1;
|
||
|
|
cgc.data_direction = DMA_FROM_DEVICE;
|
||
|
|
cgc.timeout = VENDOR_TIMEOUT;
|
||
|
|
rc = sr_do_ioctl(cd, &cgc);
|
||
|
|
if (rc == -EINVAL) {
|
||
|
|
printk(KERN_INFO "%s: Hmm, seems the drive "
|
||
|
|
"doesn't support multisession CD's\n",
|
||
|
|
cd->cdi.name);
|
||
|
|
no_multi = 1;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if (rc != 0)
|
||
|
|
break;
|
||
|
|
min = BCD2BIN(buffer[1]);
|
||
|
|
sec = BCD2BIN(buffer[2]);
|
||
|
|
frame = BCD2BIN(buffer[3]);
|
||
|
|
sector = min * CD_SECS * CD_FRAMES + sec * CD_FRAMES + frame;
|
||
|
|
if (sector)
|
||
|
|
sector -= CD_MSF_OFFSET;
|
||
|
|
sr_set_blocklength(cd, 2048);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
case VENDOR_WRITER:
|
||
|
|
cgc.cmd[0] = READ_TOC;
|
||
|
|
cgc.cmd[8] = 0x04;
|
||
|
|
cgc.cmd[9] = 0x40;
|
||
|
|
cgc.buffer = buffer;
|
||
|
|
cgc.buflen = 0x04;
|
||
|
|
cgc.quiet = 1;
|
||
|
|
cgc.data_direction = DMA_FROM_DEVICE;
|
||
|
|
cgc.timeout = VENDOR_TIMEOUT;
|
||
|
|
rc = sr_do_ioctl(cd, &cgc);
|
||
|
|
if (rc != 0) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if ((rc = buffer[2]) == 0) {
|
||
|
|
printk(KERN_WARNING
|
||
|
|
"%s: No finished session\n", cd->cdi.name);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
cgc.cmd[0] = READ_TOC; /* Read TOC */
|
||
|
|
cgc.cmd[6] = rc & 0x7f; /* number of last session */
|
||
|
|
cgc.cmd[8] = 0x0c;
|
||
|
|
cgc.cmd[9] = 0x40;
|
||
|
|
cgc.buffer = buffer;
|
||
|
|
cgc.buflen = 12;
|
||
|
|
cgc.quiet = 1;
|
||
|
|
cgc.data_direction = DMA_FROM_DEVICE;
|
||
|
|
cgc.timeout = VENDOR_TIMEOUT;
|
||
|
|
rc = sr_do_ioctl(cd, &cgc);
|
||
|
|
if (rc != 0) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
sector = buffer[11] + (buffer[10] << 8) +
|
||
|
|
(buffer[9] << 16) + (buffer[8] << 24);
|
||
|
|
break;
|
||
|
|
#endif /* CONFIG_BLK_DEV_SR_VENDOR */
|
||
|
|
|
||
|
|
default:
|
||
|
|
/* should not happen */
|
||
|
|
printk(KERN_WARNING
|
||
|
|
"%s: unknown vendor code (%i), not initialized ?\n",
|
||
|
|
cd->cdi.name, cd->vendor);
|
||
|
|
sector = 0;
|
||
|
|
no_multi = 1;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
cd->ms_offset = sector;
|
||
|
|
cd->xa_flag = 0;
|
||
|
|
if (CDS_AUDIO != sr_disk_status(cdi) && 1 == sr_is_xa(cd))
|
||
|
|
cd->xa_flag = 1;
|
||
|
|
|
||
|
|
if (2048 != cd->device->sector_size) {
|
||
|
|
sr_set_blocklength(cd, 2048);
|
||
|
|
}
|
||
|
|
if (no_multi)
|
||
|
|
cdi->mask |= CDC_MULTI_SESSION;
|
||
|
|
|
||
|
|
#ifdef DEBUG
|
||
|
|
if (sector)
|
||
|
|
printk(KERN_DEBUG "%s: multisession offset=%lu\n",
|
||
|
|
cd->cdi.name, sector);
|
||
|
|
#endif
|
||
|
|
kfree(buffer);
|
||
|
|
return rc;
|
||
|
|
}
|