18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
30 #include <linux/dma-mapping.h>
95 	{UNIT_ATTENTION, "Device needs attention - disk may have been changed"},
178 	* been hit by a serious failure - but we'll  in gdrom_identifydevice()
179 	* try to return a sense key even so */  in gdrom_identifydevice()
252 		return -ENOMEM;  in gdrom_preparedisk_cmd()
253 	spin_command->cmd[0] = 0x70;  in gdrom_preparedisk_cmd()
254 	spin_command->cmd[2] = 0x1f;  in gdrom_preparedisk_cmd()
255 	spin_command->buflen = 0;  in gdrom_preparedisk_cmd()
266 		return -EIO;  in gdrom_preparedisk_cmd()
286 		return -ENOMEM;  in gdrom_readtoc_cmd()
288 	toc_command->cmd[0] = 0x14;  in gdrom_readtoc_cmd()
289 	toc_command->cmd[1] = session;  in gdrom_readtoc_cmd()
290 	toc_command->cmd[3] = tocsize >> 8;  in gdrom_readtoc_cmd()
291 	toc_command->cmd[4] = tocsize & 0xff;  in gdrom_readtoc_cmd()
292 	toc_command->buflen = tocsize;  in gdrom_readtoc_cmd()
294 		err = -EBUSY;  in gdrom_readtoc_cmd()
302 		err = -EINVAL;  in gdrom_readtoc_cmd()
307 		err = -EINVAL;  in gdrom_readtoc_cmd()
319 	return (cpu_to_be32(track & 0xffffff00) - GD_SESSION_OFFSET);  in get_entry_lba()
337 		return -ENOMEM;  in gdrom_get_last_session()
339 	/* Check if GD-ROM */  in gdrom_get_last_session()
341 	/* Not a GD-ROM so check if standard CD-ROM */  in gdrom_get_last_session()
347 			return -ENXIO;  in gdrom_get_last_session()
351 	fentry = get_entry_track(gd.toc->first);  in gdrom_get_last_session()
352 	lentry = get_entry_track(gd.toc->last);  in gdrom_get_last_session()
354 	track = get_entry_track(gd.toc->last);  in gdrom_get_last_session()
356 		data = gd.toc->entry[track - 1];  in gdrom_get_last_session()
359 		track--;  in gdrom_get_last_session()
362 	if ((track > 100) || (track < get_entry_track(gd.toc->first))) {  in gdrom_get_last_session()
365 		return -ENXIO;  in gdrom_get_last_session()
368 	ms_info->addr_format = CDROM_LBA;  in gdrom_get_last_session()
369 	ms_info->addr.lba = get_entry_lba(data);  in gdrom_get_last_session()
370 	ms_info->xa_flag = 1;  in gdrom_get_last_session()
387 	/* read the sense key */  in gdrom_drivestatus()
388 	char sense = __raw_readb(GDROM_ERROR_REG);  in gdrom_drivestatus()  local
389 	sense &= 0xF0;  in gdrom_drivestatus()
390 	if (sense == 0)  in gdrom_drivestatus()
392 	if (sense == 0x20)  in gdrom_drivestatus()
401 	/* check the sense key */  in gdrom_check_events()
417  * CD Rom specification  - returning int */
421 	gdrom_spicommand(&command->cmd, command->buflen);  in gdrom_packetcommand()
425 /* Get Sense SPI command
434 	short sense[5];  in gdrom_getsense()  local
436 	int err = -EIO;  in gdrom_getsense()
440 		return -ENOMEM;  in gdrom_getsense()
441 	sense_command->cmd[0] = 0x13;  in gdrom_getsense()
442 	sense_command->cmd[4] = 10;  in gdrom_getsense()
443 	sense_command->buflen = 10;  in gdrom_getsense()
445 	* the sense key if possible */  in gdrom_getsense()
447 		err = -EBUSY;  in gdrom_getsense()
456 	insw(GDROM_DATA_REG, &sense, sense_command->buflen/2);  in gdrom_getsense()
457 	if (sense[1] & 40) {  in gdrom_getsense()
458 		pr_info("Drive not ready - command aborted\n");  in gdrom_getsense()
461 	sense_key = sense[1] & 0x0F;  in gdrom_getsense()
465 		pr_err("Unknown sense key: %d\n", sense_key);  in gdrom_getsense()
466 	if (bufstring) /* return addional sense data */  in gdrom_getsense()
467 		memcpy(bufstring, &sense[4], 2);  in gdrom_getsense()
481 	return -EINVAL;  in gdrom_audio_ioctl()
497 static int gdrom_bdops_open(struct block_device *bdev, fmode_t mode)  in gdrom_bdops_open()  argument
504 	ret = cdrom_open(gd.cd_info, bdev, mode);  in gdrom_bdops_open()
509 static void gdrom_bdops_release(struct gendisk *disk, fmode_t mode)  in gdrom_bdops_release()  argument
512 	cdrom_release(gd.cd_info, mode);  in gdrom_bdops_release()
522 static int gdrom_bdops_ioctl(struct block_device *bdev, fmode_t mode,  in gdrom_bdops_ioctl()  argument
528 	ret = cdrom_ioctl(gd.cd_info, bdev, mode, cmd, arg);  in gdrom_bdops_ioctl()
578  * 0 -> 0x30
579  * 1 -> mode
580  * 2 -> block >> 16
581  * 3 -> block >> 8
582  * 4 -> block
583  * 8 -> sectors >> 16
584  * 9 -> sectors >> 8
585  * 10 -> sectors
601 	read_command->cmd[0] = 0x30;  in gdrom_readdisk_dma()
602 	read_command->cmd[1] = 0x20;  in gdrom_readdisk_dma()
609 		__raw_writel(virt_to_phys(bio_data(req->bio)), GDROM_DMA_STARTADDR_REG);  in gdrom_readdisk_dma()
613 		read_command->cmd[2] = (block >> 16) & 0xFF;  in gdrom_readdisk_dma()
614 		read_command->cmd[3] = (block >> 8) & 0xFF;  in gdrom_readdisk_dma()
615 		read_command->cmd[4] = block & 0xFF;  in gdrom_readdisk_dma()
616 		read_command->cmd[8] = (block_cnt >> 16) & 0xFF;  in gdrom_readdisk_dma()
617 		read_command->cmd[9] = (block_cnt >> 8) & 0xFF;  in gdrom_readdisk_dma()
618 		read_command->cmd[10] = block_cnt & 0xFF;  in gdrom_readdisk_dma()
638 		outsw(GDROM_DATA_REG, &read_command->cmd, 6);  in gdrom_readdisk_dma()
654 		list_del_init(&req->queuelist);  in gdrom_readdisk_dma()
672 			list_add_tail(&req->queuelist, &gdrom_deferred);  in gdrom_request()
676 			pr_notice("Read only device - write request ignored\n");  in gdrom_request()
680 			printk(KERN_DEBUG "gdrom: Non-fs request ignored\n");  in gdrom_request()
692 	int err = -ENOMEM;  in gdrom_outputversion()
699 	model_name = kstrndup(id->modname, 16, GFP_KERNEL);  in gdrom_outputversion()
702 	manuf_name = kstrndup(id->mname, 16, GFP_KERNEL);  in gdrom_outputversion()
705 	firmw_ver = kstrndup(id->firmver, 16, GFP_KERNEL);  in gdrom_outputversion()
721 /* set the default mode for DMA transfer */
727 		return -EBUSY;  in gdrom_init_dma_mode()
730 		return -EBUSY;  in gdrom_init_dma_mode()
732 	* Bits 31 - 16 security: 0x8843  in gdrom_init_dma_mode()
734 	* Bits 14 - 8 start of transfer range in 1 MB blocks OR'ed with 0x80  in gdrom_init_dma_mode()
735 	* Bits 6 - 0 end of transfer range in 1 MB blocks OR'ed with 0x80  in gdrom_init_dma_mode()
745 	gd.cd_info->ops = &gdrom_ops;  in probe_gdrom_setupcd()
746 	gd.cd_info->capacity = 1;  in probe_gdrom_setupcd()
747 	strcpy(gd.cd_info->name, GDROM_DEV_NAME);  in probe_gdrom_setupcd()
748 	gd.cd_info->mask = CDC_CLOSE_TRAY|CDC_OPEN_TRAY|CDC_LOCK|  in probe_gdrom_setupcd()
754 	gd.disk->major = gdrom_major;  in probe_gdrom_setupdisk()
755 	gd.disk->first_minor = 1;  in probe_gdrom_setupdisk()
756 	gd.disk->minors = 1;  in probe_gdrom_setupdisk()
757 	strcpy(gd.disk->disk_name, GDROM_DEV_NAME);  in probe_gdrom_setupdisk()
767 	gd.disk->queue = gd.gdrom_rq;  in probe_gdrom_setupqueue()
781 		return -ENODEV;  in probe_gdrom()
785 		return -ENOMEM;  in probe_gdrom()
795 		err = -ENOMEM;  in probe_gdrom()
801 		err = -ENODEV;  in probe_gdrom()
806 		err = -ENODEV;  in probe_gdrom()
809 	gd.disk->fops = &gdrom_bdops;  in probe_gdrom()
816 		err = -ENOMEM;  in probe_gdrom()
827 		err = -ENOMEM;  in probe_gdrom()
846 	pr_warning("Probe failed - error is 0x%X\n", err);  in probe_gdrom()
879 	pd = platform_device_register_simple(GDROM_DEV_NAME, -1, NULL, 0);  in init_gdrom()
898 MODULE_DESCRIPTION("SEGA Dreamcast GD-ROM Driver");