sr_ioctl.c

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	sr_cmd[9] = 0;

	result = sr_do_ioctl(MINOR(cdi->dev), sr_cmd, buffer, 24, 0, SCSI_DATA_READ, NULL);

	memcpy(mcn->medium_catalog_number, buffer + 9, 13);
	mcn->medium_catalog_number[13] = 0;

	return result;
}

int sr_reset(struct cdrom_device_info *cdi)
{
	invalidate_buffers(cdi->dev);
	return 0;
}

int sr_select_speed(struct cdrom_device_info *cdi, int speed)
{
	u_char sr_cmd[MAX_COMMAND_SIZE];

	if (speed == 0)
		speed = 0xffff;	/* set to max */
	else
		speed *= 177;	/* Nx to kbyte/s */

	memset(sr_cmd, 0, MAX_COMMAND_SIZE);
	sr_cmd[0] = GPCMD_SET_SPEED;	/* SET CD SPEED */
	sr_cmd[1] = (scsi_CDs[MINOR(cdi->dev)].device->lun) << 5;
	sr_cmd[2] = (speed >> 8) & 0xff;	/* MSB for speed (in kbytes/sec) */
	sr_cmd[3] = speed & 0xff;	/* LSB */

	if (sr_do_ioctl(MINOR(cdi->dev), sr_cmd, NULL, 0, 0, SCSI_DATA_NONE, NULL))
		return -EIO;
	return 0;
}

/* ----------------------------------------------------------------------- */
/* this is called by the generic cdrom driver. arg is a _kernel_ pointer,  */
/* because the generic cdrom driver does the user access stuff for us.     */
/* only cdromreadtochdr and cdromreadtocentry are left - for use with the  */
/* sr_disk_status interface for the generic cdrom driver.                  */

int sr_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg)
{
	u_char sr_cmd[10];
	int result, target = MINOR(cdi->dev);
	unsigned char buffer[32];

	memset(sr_cmd, 0, sizeof(sr_cmd));

	switch (cmd) {
	case CDROMREADTOCHDR:
		{
			struct cdrom_tochdr *tochdr = (struct cdrom_tochdr *) arg;

			sr_cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
			sr_cmd[1] = ((scsi_CDs[target].device->lun) << 5);
			sr_cmd[2] = sr_cmd[3] = sr_cmd[4] = sr_cmd[5] = 0;
			sr_cmd[8] = 12;		/* LSB of length */

			result = sr_do_ioctl(target, sr_cmd, buffer, 12, 1, SCSI_DATA_READ, NULL);

			tochdr->cdth_trk0 = buffer[2];
			tochdr->cdth_trk1 = buffer[3];

			break;
		}

	case CDROMREADTOCENTRY:
		{
			struct cdrom_tocentry *tocentry = (struct cdrom_tocentry *) arg;

			sr_cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
			sr_cmd[1] = ((scsi_CDs[target].device->lun) << 5) |
			    (tocentry->cdte_format == CDROM_MSF ? 0x02 : 0);
			sr_cmd[2] = sr_cmd[3] = sr_cmd[4] = sr_cmd[5] = 0;
			sr_cmd[6] = tocentry->cdte_track;
			sr_cmd[8] = 12;		/* LSB of length */

			result = sr_do_ioctl(target, sr_cmd, buffer, 12, 0, SCSI_DATA_READ, NULL);

			tocentry->cdte_ctrl = buffer[5] & 0xf;
			tocentry->cdte_adr = buffer[5] >> 4;
			tocentry->cdte_datamode = (tocentry->cdte_ctrl & 0x04) ? 1 : 0;
			if (tocentry->cdte_format == CDROM_MSF) {
				tocentry->cdte_addr.msf.minute = buffer[9];
				tocentry->cdte_addr.msf.second = buffer[10];
				tocentry->cdte_addr.msf.frame = buffer[11];
			} else
				tocentry->cdte_addr.lba = (((((buffer[8] << 8) + buffer[9]) << 8)
					+ buffer[10]) << 8) + buffer[11];

			break;
		}

	case CDROMPLAYTRKIND: {
		struct cdrom_ti* ti = (struct cdrom_ti*)arg;

		sr_cmd[0] = GPCMD_PLAYAUDIO_TI;
		sr_cmd[1] = scsi_CDs[target].device->lun << 5;
		sr_cmd[4] = ti->cdti_trk0;
		sr_cmd[5] = ti->cdti_ind0;
		sr_cmd[7] = ti->cdti_trk1;
		sr_cmd[8] = ti->cdti_ind1;

		result = sr_do_ioctl(target, sr_cmd, NULL, 0, 0, SCSI_DATA_NONE, NULL);
		if (result == -EDRIVE_CANT_DO_THIS)
			result = sr_fake_playtrkind(cdi, ti);

		break;
	}

	default:
		return -EINVAL;
	}

#if 0
	if (result)
		printk("DEBUG: sr_audio: result for ioctl %x: %x\n", cmd, result);
#endif

	return result;
}

/* -----------------------------------------------------------------------
 * a function to read all sorts of funny cdrom sectors using the READ_CD
 * scsi-3 mmc command
 *
 * lba:     linear block address
 * format:  0 = data (anything)
 *          1 = audio
 *          2 = data (mode 1)
 *          3 = data (mode 2)
 *          4 = data (mode 2 form1)
 *          5 = data (mode 2 form2)
 * blksize: 2048 | 2336 | 2340 | 2352
 */

int sr_read_cd(int minor, unsigned char *dest, int lba, int format, int blksize)
{
	unsigned char cmd[MAX_COMMAND_SIZE];

#ifdef DEBUG
	printk("sr%d: sr_read_cd lba=%d format=%d blksize=%d\n",
	       minor, lba, format, blksize);
#endif

	memset(cmd, 0, MAX_COMMAND_SIZE);
	cmd[0] = GPCMD_READ_CD;	/* READ_CD */
	cmd[1] = (scsi_CDs[minor].device->lun << 5) | ((format & 7) << 2);
	cmd[2] = (unsigned char) (lba >> 24) & 0xff;
	cmd[3] = (unsigned char) (lba >> 16) & 0xff;
	cmd[4] = (unsigned char) (lba >> 8) & 0xff;
	cmd[5] = (unsigned char) lba & 0xff;
	cmd[8] = 1;
	switch (blksize) {
	case 2336:
		cmd[9] = 0x58;
		break;
	case 2340:
		cmd[9] = 0x78;
		break;
	case 2352:
		cmd[9] = 0xf8;
		break;
	default:
		cmd[9] = 0x10;
		break;
	}
	return sr_do_ioctl(minor, cmd, dest, blksize, 0, SCSI_DATA_READ, NULL);
}

/*
 * read sectors with blocksizes other than 2048
 */

int sr_read_sector(int minor, int lba, int blksize, unsigned char *dest)
{
	unsigned char cmd[MAX_COMMAND_SIZE];	/* the scsi-command */
	int rc;

	/* we try the READ CD command first... */
	if (scsi_CDs[minor].readcd_known) {
		rc = sr_read_cd(minor, dest, lba, 0, blksize);
		if (-EDRIVE_CANT_DO_THIS != rc)
			return rc;
		scsi_CDs[minor].readcd_known = 0;
		printk("CDROM does'nt support READ CD (0xbe) command\n");
		/* fall & retry the other way */
	}
	/* ... if this fails, we switch the blocksize using MODE SELECT */
	if (blksize != scsi_CDs[minor].device->sector_size) {
		if (0 != (rc = sr_set_blocklength(minor, blksize)))
			return rc;
	}
#ifdef DEBUG
	printk("sr%d: sr_read_sector lba=%d blksize=%d\n", minor, lba, blksize);
#endif

	memset(cmd, 0, MAX_COMMAND_SIZE);
	cmd[0] = GPCMD_READ_10;
	cmd[1] = (scsi_CDs[minor].device->lun << 5);
	cmd[2] = (unsigned char) (lba >> 24) & 0xff;
	cmd[3] = (unsigned char) (lba >> 16) & 0xff;
	cmd[4] = (unsigned char) (lba >> 8) & 0xff;
	cmd[5] = (unsigned char) lba & 0xff;
	cmd[8] = 1;
	rc = sr_do_ioctl(minor, cmd, dest, blksize, 0, SCSI_DATA_READ, NULL);

	return rc;
}

/*
 * read a sector in raw mode to check the sector format
 * ret: 1 == mode2 (XA), 0 == mode1, <0 == error 
 */

int sr_is_xa(int minor)
{
	unsigned char *raw_sector;
	int is_xa;

	if (!xa_test)
		return 0;

	raw_sector = (unsigned char *) scsi_malloc(2048 + 512);
	if (!raw_sector)
		return -ENOMEM;
	if (0 == sr_read_sector(minor, scsi_CDs[minor].ms_offset + 16,
				CD_FRAMESIZE_RAW1, raw_sector)) {
		is_xa = (raw_sector[3] == 0x02) ? 1 : 0;
	} else {
		/* read a raw sector failed for some reason. */
		is_xa = -1;
	}
	scsi_free(raw_sector, 2048 + 512);
#ifdef DEBUG
	printk("sr%d: sr_is_xa: %d\n", minor, is_xa);
#endif
	return is_xa;
}

int sr_dev_ioctl(struct cdrom_device_info *cdi,
		 unsigned int cmd, unsigned long arg)
{
	int target;

	target = MINOR(cdi->dev);

	switch (cmd) {
	case BLKROSET:
	case BLKROGET:
	case BLKRASET:
	case BLKRAGET:
	case BLKFLSBUF:
	case BLKSSZGET:
		return blk_ioctl(cdi->dev, cmd, arg);

	default:
		return scsi_ioctl(scsi_CDs[target].device, cmd, (void *) arg);
	}
}

/*
 * Overrides for Emacs so that we follow Linus's tabbing style.
 * Emacs will notice this stuff at the end of the file and automatically
 * adjust the settings for this buffer only.  This must remain at the end
 * of the file.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-indent-level: 4
 * c-brace-imaginary-offset: 0
 * c-brace-offset: -4
 * c-argdecl-indent: 4
 * c-label-offset: -4
 * c-continued-statement-offset: 4
 * c-continued-brace-offset: 0
 * indent-tabs-mode: nil
 * tab-width: 8
 * End:
 */