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Release 4.12 drivers/ide/ide-cd.c

Directory: drivers/ide
/*
 * ATAPI CD-ROM driver.
 *
 * Copyright (C) 1994-1996   Scott Snyder <snyder@fnald0.fnal.gov>
 * Copyright (C) 1996-1998   Erik Andersen <andersee@debian.org>
 * Copyright (C) 1998-2000   Jens Axboe <axboe@suse.de>
 * Copyright (C) 2005, 2007-2009  Bartlomiej Zolnierkiewicz
 *
 * May be copied or modified under the terms of the GNU General Public
 * License.  See linux/COPYING for more information.
 *
 * See Documentation/cdrom/ide-cd for usage information.
 *
 * Suggestions are welcome. Patches that work are more welcome though. ;-)
 *
 * Documentation:
 *      Mt. Fuji (SFF8090 version 4) and ATAPI (SFF-8020i rev 2.6) standards.
 *
 * For historical changelog please see:
 *      Documentation/ide/ChangeLog.ide-cd.1994-2004
 */


#define DRV_NAME "ide-cd"

#define PFX DRV_NAME ": "


#define IDECD_VERSION "5.00"

#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched/task_stack.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/cdrom.h>
#include <linux/ide.h>
#include <linux/completion.h>
#include <linux/mutex.h>
#include <linux/bcd.h>

/* For SCSI -> ATAPI command conversion */
#include <scsi/scsi.h>

#include <linux/io.h>
#include <asm/byteorder.h>
#include <linux/uaccess.h>
#include <asm/unaligned.h>

#include "ide-cd.h"

static DEFINE_MUTEX(ide_cd_mutex);
static DEFINE_MUTEX(idecd_ref_mutex);

static void ide_cd_release(struct device *);




static struct cdrom_info *ide_cd_get(struct gendisk *disk)
{
	struct cdrom_info *cd = NULL;

	mutex_lock(&idecd_ref_mutex);
	cd = ide_drv_g(disk, cdrom_info);
	if (cd) {
		if (ide_device_get(cd->drive))
			cd = NULL;
		else
			get_device(&cd->dev);

	}
	mutex_unlock(&idecd_ref_mutex);
	return cd;
}


Contributors
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Bartlomiej Zolnierkiewicz6590.28%466.67%


Arjan van de Ven45.56%116.67%


Borislav Petkov34.17%116.67%


Total72100.00%6100.00%






static void ide_cd_put(struct cdrom_info *cd)
{
	ide_drive_t *drive = cd->drive;

	mutex_lock(&idecd_ref_mutex);
	put_device(&cd->dev);
	ide_device_put(drive);
	mutex_unlock(&idecd_ref_mutex);
}


Contributors
PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz4090.91%375.00%


Arjan van de Ven49.09%125.00%


Total44100.00%4100.00%



/*
 * Generic packet command support and error handling routines.
 */

/* Mark that we've seen a media change and invalidate our internal buffers. */



static void cdrom_saw_media_change(ide_drive_t *drive)
{
	drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
	drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe1565.22%125.00%


Bartlomiej Zolnierkiewicz521.74%250.00%


Borislav Petkov313.04%125.00%


Total23100.00%4100.00%






static int cdrom_log_sense(ide_drive_t *drive, struct request *rq)
{
	struct request_sense *sense = &drive->sense_data;
	int log = 0;

	if (!sense || !rq || (rq->rq_flags & RQF_QUIET))
		return 0;

	ide_debug_log(IDE_DBG_SENSE, "sense_key: 0x%x", sense->sense_key);

	switch (sense->sense_key) {
	case NO_SENSE:
	case RECOVERED_ERROR:
		break;
	case NOT_READY:
		/*
                 * don't care about tray state messages for e.g. capacity
                 * commands or in-progress or becoming ready
                 */
		if (sense->asc == 0x3a || sense->asc == 0x04)
			break;
		log = 1;
		break;
	case ILLEGAL_REQUEST:
		/*
                 * don't log START_STOP unit with LoEj set, since we cannot
                 * reliably check if drive can auto-close
                 */
		if (scsi_req(rq)->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
			break;
		log = 1;
		break;
	case UNIT_ATTENTION:
		/*
                 * Make good and sure we've seen this potential media change.
                 * Some drives (i.e. Creative) fail to present the correct sense
                 * key in the error register.
                 */
		cdrom_saw_media_change(drive);
		break;
	default:
		log = 1;
		break;
	}
	return log;
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe11074.32%225.00%


Borislav Petkov2214.86%225.00%


Linus Torvalds96.08%112.50%


Christoph Hellwig53.38%225.00%


Alan Cox21.35%112.50%


Total148100.00%8100.00%






static void cdrom_analyze_sense_data(ide_drive_t *drive,
				     struct request *failed_command)
{
	struct request_sense *sense = &drive->sense_data;
	struct cdrom_info *info = drive->driver_data;
	unsigned long sector;
	unsigned long bio_sectors;

	ide_debug_log(IDE_DBG_SENSE, "error_code: 0x%x, sense_key: 0x%x",
				     sense->error_code, sense->sense_key);

	if (failed_command)
		ide_debug_log(IDE_DBG_SENSE, "failed cmd: 0x%x",
					     failed_command->cmd[0]);

	if (!cdrom_log_sense(drive, failed_command))
		return;

	/*
         * If a read toc is executed for a CD-R or CD-RW medium where the first
         * toc has not been recorded yet, it will fail with 05/24/00 (which is a
         * confusing error)
         */
	if (failed_command && scsi_req(failed_command)->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
		if (sense->sense_key == 0x05 && sense->asc == 0x24)
			return;

	/* current error */
	if (sense->error_code == 0x70) {
		switch (sense->sense_key) {
		case MEDIUM_ERROR:
		case VOLUME_OVERFLOW:
		case ILLEGAL_REQUEST:
			if (!sense->valid)
				break;
			if (failed_command == NULL ||
			    blk_rq_is_passthrough(failed_command))
				break;
			sector = (sense->information[0] << 24) |
				 (sense->information[1] << 16) |
				 (sense->information[2] <<  8) |
				 (sense->information[3]);

			if (queue_logical_block_size(drive->queue) == 2048)
				/* device sector size is 2K */
				sector <<= 2;

			bio_sectors = max(bio_sectors(failed_command->bio), 4U);
			sector &= ~(bio_sectors - 1);

			/*
                         * The SCSI specification allows for the value
                         * returned by READ CAPACITY to be up to 75 2K
                         * sectors past the last readable block.
                         * Therefore, if we hit a medium error within the
                         * last 75 2K sectors, we decrease the saved size
                         * value.
                         */
			if (sector < get_capacity(info->disk) &&
			    drive->probed_capacity - sector < 4 * 75)
				set_capacity(info->disk, sector);
		}
	}

	ide_cd_log_error(drive->name, failed_command, sense);
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox14951.20%17.14%


Jens Axboe6221.31%17.14%


Borislav Petkov5217.87%535.71%


Roel Kluin144.81%17.14%


Christoph Hellwig62.06%214.29%


Martin K. Petersen31.03%17.14%


Bartlomiej Zolnierkiewicz31.03%214.29%


Linus Torvalds20.69%17.14%


Total291100.00%14100.00%






static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
{
	/*
         * For ATA_PRIV_SENSE, "rq->special" points to the original
         * failed request.  Also, the sense data should be read
         * directly from rq which might be different from the original
         * sense buffer if it got copied during mapping.
         */
	struct request *failed = (struct request *)rq->special;
	void *sense = bio_data(rq->bio);

	if (failed) {
		/*
                 * Sense is always read into drive->sense_data, copy back to the
                 * original request.
                 */
		memcpy(scsi_req(failed)->sense, sense, 18);
		scsi_req(failed)->sense_len = scsi_req(rq)->sense_len;
		cdrom_analyze_sense_data(drive, failed);

		if (ide_end_rq(drive, failed, -EIO, blk_rq_bytes(failed)))
			BUG();
	} else
		cdrom_analyze_sense_data(drive, NULL);
}



Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe4237.84%320.00%


Alan Cox1715.32%16.67%


Linus Torvalds1311.71%16.67%


Borislav Petkov119.91%16.67%


Christoph Hellwig119.91%213.33%


Tejun Heo76.31%213.33%


Bartlomiej Zolnierkiewicz76.31%426.67%


Kiyoshi Ueda32.70%16.67%


Total111100.00%15100.00%



/*
 * Allow the drive 5 seconds to recover; some devices will return NOT_READY
 * while flushing data from cache.
 *
 * returns: 0 failed (write timeout expired)
 *          1 success
 */



static int ide_cd_breathe(ide_drive_t *drive, struct request *rq)
{

	struct cdrom_info *info = drive->driver_data;

	if (!scsi_req(rq)->result)
		info->write_timeout = jiffies +	ATAPI_WAIT_WRITE_BUSY;

	scsi_req(rq)->result = 1;

	if (time_after(jiffies, info->write_timeout))
		return 0;
	else {
		/*
                 * take a breather
                 */
		blk_delay_queue(drive->queue, 1);
		return 1;
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Borislav Petkov6985.19%133.33%


Christoph Hellwig89.88%133.33%


Jens Axboe44.94%133.33%


Total81100.00%3100.00%



/**
 * Returns:
 * 0: if the request should be continued.
 * 1: if the request will be going through error recovery.
 * 2: if the request should be ended.
 */



static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
{
	ide_hwif_t *hwif = drive->hwif;
	struct request *rq = hwif->rq;
	int err, sense_key, do_end_request = 0;

	/* get the IDE error register */
	err = ide_read_error(drive);
	sense_key = err >> 4;

	ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, rq->cmd_type: 0x%x, err: 0x%x, "
				  "stat 0x%x",
				  rq->cmd[0], rq->cmd_type, err, stat);

	if (ata_sense_request(rq)) {
		/*
                 * We got an error trying to get sense info from the drive
                 * (probably while trying to recover from a former error).
                 * Just give up.
                 */
		rq->rq_flags |= RQF_FAILED;
		return 2;
	}

	/* if we have an error, pass CHECK_CONDITION as the SCSI status byte */
	if (blk_rq_is_scsi(rq) && !scsi_req(rq)->result)
		scsi_req(rq)->result = SAM_STAT_CHECK_CONDITION;

	if (blk_noretry_request(rq))
		do_end_request = 1;

	switch (sense_key) {
	case NOT_READY:
		if (req_op(rq) == REQ_OP_WRITE) {
			if (ide_cd_breathe(drive, rq))
				return 1;
		} else {
			cdrom_saw_media_change(drive);

			if (!blk_rq_is_passthrough(rq) &&
			    !(rq->rq_flags & RQF_QUIET))
				printk(KERN_ERR PFX "%s: tray open\n",
					drive->name);
		}
		do_end_request = 1;
		break;
	case UNIT_ATTENTION:
		cdrom_saw_media_change(drive);

		if (blk_rq_is_passthrough(rq))
			return 0;

		/*
                 * Arrange to retry the request but be sure to give up if we've
                 * retried too many times.
                 */
		if (++scsi_req(rq)->result > ERROR_MAX)
			do_end_request = 1;
		break;
	case ILLEGAL_REQUEST:
		/*
                 * Don't print error message for this condition -- SFF8090i
                 * indicates that 5/24/00 is the correct response to a request
                 * to close the tray if the drive doesn't have that capability.
                 *
                 * cdrom_log_sense() knows this!
                 */
		if (scsi_req(rq)->cmd[0] == GPCMD_START_STOP_UNIT)
			break;
		/* fall-through */
	case DATA_PROTECT:
		/*
                 * No point in retrying after an illegal request or data
                 * protect error.
                 */
		if (!(rq->rq_flags & RQF_QUIET))
			ide_dump_status(drive, "command error", stat);
		do_end_request = 1;
		break;
	case MEDIUM_ERROR:
		/*
                 * No point in re-trying a zillion times on a bad sector.
                 * If we got here the error is not correctable.
                 */
		if (!(rq->rq_flags & RQF_QUIET))
			ide_dump_status(drive, "media error "
					"(bad sector)", stat);
		do_end_request = 1;
		break;
	case BLANK_CHECK:
		/* disk appears blank? */
		if (!(rq->rq_flags & RQF_QUIET))
			ide_dump_status(drive, "media error (blank)",
					stat);
		do_end_request = 1;
		break;
	default:
		if (blk_rq_is_passthrough(rq))
			break;
		if (err & ~ATA_ABORTED) {
			/* go to the default handler for other errors */
			ide_error(drive, "cdrom_decode_status", stat);
			return 1;
		} else if (++scsi_req(rq)->result > ERROR_MAX)
			/* we've racked up too many retries, abort */
			do_end_request = 1;
	}

	if (blk_rq_is_passthrough(rq)) {
		rq->rq_flags |= RQF_FAILED;
		do_end_request = 1;
	}

	/*
         * End a request through request sense analysis when we have sense data.
         * We need this in order to perform end of media processing.
         */
	if (do_end_request)
		goto end_request;

	/* if we got a CHECK_CONDITION status, queue a request sense command */
	if (stat & ATA_ERR)
		return ide_queue_sense_rq(drive, NULL) ? 2 : 1;
	return 1;

end_request:
	if (stat & ATA_ERR) {
		hwif->rq = NULL;
		return ide_queue_sense_rq(drive, rq) ? 2 : 1;
	} else
		return 2;
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe14630.74%717.07%


Bartlomiej Zolnierkiewicz11824.84%1229.27%


Borislav Petkov7515.79%1024.39%


Christoph Hellwig6814.32%614.63%


Andrew Morton265.47%24.88%


Alan Cox132.74%12.44%


Erik Andersen132.74%12.44%


Tejun Heo102.11%12.44%


Linus Torvalds61.26%12.44%


Total475100.00%41100.00%






static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd)
{
	struct request *rq = cmd->rq;

	ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]);

	/*
         * Some of the trailing request sense fields are optional,
         * and some drives don't send them.  Sigh.
         */
	if (scsi_req(rq)->cmd[0] == GPCMD_REQUEST_SENSE &&
	    cmd->nleft > 0 && cmd->nleft <= 5)
		cmd->nleft = 0;
}


Contributors
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Bartlomiej Zolnierkiewicz5070.42%233.33%


Borislav Petkov1825.35%350.00%


Christoph Hellwig34.23%116.67%


Total71100.00%6100.00%






int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
		    int write, void *buffer, unsigned *bufflen,
		    struct request_sense *sense, int timeout,
		    req_flags_t rq_flags)
{
	struct cdrom_info *info = drive->driver_data;
	int retries = 10;
	bool failed;

	ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
				  "rq_flags: 0x%x",
				  cmd[0], write, timeout, rq_flags);

	/* start of retry loop */
	do {
		struct request *rq;
		int error;
		bool delay = false;

		rq = blk_get_request(drive->queue,
			write ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN,  __GFP_RECLAIM);
		scsi_req_init(rq);
		memcpy(scsi_req(rq)->cmd, cmd, BLK_MAX_CDB);
		ide_req(rq)->type = ATA_PRIV_PC;
		rq->rq_flags |= rq_flags;
		rq->timeout = timeout;
		if (buffer) {
			error = blk_rq_map_kern(drive->queue, rq, buffer,
						*bufflen, GFP_NOIO);
			if (error) {
				blk_put_request(rq);
				return error;
			}
		}

		blk_execute_rq(drive->queue, info->disk, rq, 0);
		error = scsi_req(rq)->result ? -EIO : 0;

		if (buffer)
			*bufflen = scsi_req(rq)->resid_len;
		if (sense)
			memcpy(sense, scsi_req(rq)->sense, sizeof(*sense));

		/*
                 * FIXME: we should probably abort/retry or something in case of
                 * failure.
                 */
		failed = (rq->rq_flags & RQF_FAILED) != 0;
		if (failed) {
			/*
                         * The request failed.  Retry if it was due to a unit
                         * attention status (usually means media was changed).
                         */
			struct request_sense *reqbuf = scsi_req(rq)->sense;

			if (reqbuf->sense_key == UNIT_ATTENTION)
				cdrom_saw_media_change(drive);
			else if (reqbuf->sense_key == NOT_READY &&
				 reqbuf->asc == 4 && reqbuf->ascq != 4) {
				/*
                                 * The drive is in the process of loading
                                 * a disk.  Retry, but wait a little to give
                                 * the drive time to complete the load.
                                 */
				delay = true;
			} else {
				/* otherwise, don't retry */
				retries = 0;
			}
			--retries;
		}
		blk_put_request(rq);
		if (delay)
			ssleep(2);
	} while (failed && retries >= 0);

	/* return an error if the command failed */
	return failed ? -EIO : 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe10328.14%16.25%


Christoph Hellwig10227.87%637.50%


FUJITA Tomonori10027.32%16.25%


Tejun Heo287.65%212.50%


Borislav Petkov226.01%318.75%


Linus Torvalds92.46%16.25%


Mel Gorman10.27%16.25%


Bartlomiej Zolnierkiewicz10.27%16.25%


Total366100.00%16100.00%



/*
 * returns true if rq has been completed
 */



static bool ide_cd_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
{
	unsigned int nr_bytes = cmd->nbytes - cmd->nleft;

	if (cmd->tf_flags & IDE_TFLAG_WRITE)
		nr_bytes -= cmd->last_xfer_len;

	if (nr_bytes > 0) {
		ide_complete_rq(drive, 0, nr_bytes);
		return true;
	}

	return false;
}


Contributors
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Bartlomiej Zolnierkiewicz5585.94%150.00%


Borislav Petkov914.06%150.00%


Total64100.00%2100.00%






static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
{
	ide_hwif_t *hwif = drive->hwif;
	struct ide_cmd *cmd = &hwif->cmd;
	struct request *rq = hwif->rq;
	ide_expiry_t *expiry = NULL;
	int dma_error = 0, dma, thislen, uptodate = 0;
	int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc = 0;
	int sense = ata_sense_request(rq);
	unsigned int timeout;
	u16 len;
	u8 ireason, stat;

	ide_debug_log(IDE_DBG_PC, "cmd: 0x%x, write: 0x%x", rq->cmd[0], write);

	/* check for errors */
	dma = drive->dma;
	if (dma) {
		drive->dma = 0;
		drive->waiting_for_dma = 0;
		dma_error = hwif->dma_ops->dma_end(drive);
		ide_dma_unmap_sg(drive, cmd);
		if (dma_error) {
			printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
					write ? "write" : "read");
			ide_dma_off(drive);
		}
	}

	/* check status */
	stat = hwif->tp_ops->read_status(hwif);

	if (!OK_STAT(stat, 0, BAD_R_STAT)) {
		rc = cdrom_decode_status(drive, stat);
		if (rc) {
			if (rc == 2)
				goto out_end;
			return ide_stopped;
		}
	}

	/* using dma, transfer is complete now */
	if (dma) {
		if (dma_error)
			return ide_error(drive, "dma error", stat);
		uptodate = 1;
		goto out_end;
	}

	ide_read_bcount_and_ireason(drive, &len, &ireason);

	thislen = !blk_rq_is_passthrough(rq) ? len : cmd->nleft;
	if (thislen > len)
		thislen = len;

	ide_debug_log(IDE_DBG_PC, "DRQ: stat: 0x%x, thislen: %d",
				  stat, thislen);

	/* If DRQ is clear, the command has completed. */
	if ((stat & ATA_DRQ) == 0) {
		switch (req_op(rq)) {
		default:
			/*
                         * If we're not done reading/writing, complain.
                         * Otherwise, complete the command normally.
                         */
			uptodate = 1;
			if (cmd->nleft > 0) {
				printk(KERN_ERR PFX "%s: %s: data underrun "
					"(%u bytes)\n", drive->name, __func__,
					cmd->nleft);
				if (!write)
					rq->rq_flags |= RQF_FAILED;
				uptodate = 0;
			}
			goto out_end;
		case REQ_OP_DRV_IN:
		case REQ_OP_DRV_OUT:
			ide_cd_request_sense_fixup(drive, cmd);

			uptodate = cmd->nleft ? 0 : 1;

			/*
                         * suck out the remaining bytes from the drive in an
                         * attempt to complete the data xfer. (see BZ#13399)
                         */
			if (!(stat & ATA_ERR) && !uptodate && thislen) {
				ide_pio_bytes(drive, cmd, write, thislen);
				uptodate = cmd->nleft ? 0 : 1;
			}

			if (!uptodate)
				rq->rq_flags |= RQF_FAILED;
			goto out_end;
		case REQ_OP_SCSI_IN:
		case REQ_OP_SCSI_OUT:
			goto out_end;
		}
	}

	rc = ide_check_ireason(drive, rq, len, ireason, write);
	if (rc)
		goto out_end;

	cmd->last_xfer_len = 0;

	ide_debug_log(IDE_DBG_PC, "data transfer, rq->cmd_type: 0x%x, "
				  "ireason: 0x%x",
				  rq->cmd_type, ireason);

	/* transfer data */
	while (thislen > 0) {
		int blen = min_t(int, thislen, cmd->nleft);

		if (cmd->nleft == 0)
			break;

		ide_pio_bytes(drive, cmd, write, blen);
		cmd->last_xfer_len += blen;

		thislen -= blen;
		len -= blen;

		if (sense && write == 0)
			scsi_req(rq)->sense_len += blen;
	}

	/* pad, if necessary */
	if (len > 0) {
		if (blk_rq_is_passthrough(rq) || write == 0)
			ide_pad_transfer(drive, write, len);
		else {
			printk(KERN_ERR PFX "%s: confused, missing data\n",
				drive->name);
			blk_dump_rq_flags(rq, "cdrom_newpc_intr");
		}
	}

	switch (req_op(rq)) {
	case REQ_OP_SCSI_IN:
	case REQ_OP_SCSI_OUT:
		timeout = rq->timeout;
		break;
	case REQ_OP_DRV_IN:
	case REQ_OP_DRV_OUT:
		expiry = ide_cd_expiry;
		/*FALLTHRU*/
	default:
		timeout = ATAPI_WAIT_PC;
		break;
	}

	hwif->expiry = expiry;
	ide_set_handler(drive, cdrom_newpc_intr, timeout);
	return ide_started;

out_end:
	if (blk_rq_is_scsi(rq) && rc == 0) {
		scsi_req(rq)->resid_len = 0;
		blk_end_request_all(rq, 0);
		hwif->rq = NULL;
	} else {
		if (sense && uptodate)
			ide_cd_complete_failed_rq(drive, rq);

		if (!blk_rq_is_passthrough(rq)) {
			if (cmd->nleft == 0)
				uptodate = 1;
		} else {
			if (uptodate <= 0 && scsi_req(rq)->result == 0)
				scsi_req(rq)->result = -EIO;
		}

		if (uptodate == 0 && rq->bio)
			if (ide_cd_error_cmd(drive, cmd))
				return ide_stopped;

		/* make sure it's fully ended */
		if (blk_rq_is_passthrough(rq)) {
			scsi_req(rq)->resid_len -= cmd->nbytes - cmd->nleft;
			if (uptodate == 0 && (cmd->tf_flags & IDE_TFLAG_WRITE))
				scsi_req(rq)->resid_len += cmd->last_xfer_len;
		}

		ide_complete_rq(drive, uptodate ? 0 : -EIO, blk_rq_bytes(rq));

		if (sense && rc == 2)
			ide_error(drive, "request sense failure", stat);
	}
	return ide_stopped;
}


Contributors
PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz47853.65%2447.06%


Jens Axboe15817.73%47.84%


Borislav Petkov13515.15%1121.57%


Christoph Hellwig9210.33%59.80%


Tejun Heo141.57%35.88%


Kiyoshi Ueda60.67%11.96%


Rainer Weikusat40.45%11.96%


Andreas Schwab20.22%11.96%


Helge Deller20.22%11.96%


Total891100.00%51100.00%






static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
{
	struct cdrom_info *cd = drive->driver_data;
	struct request_queue *q = drive->queue;
	int write = rq_data_dir(rq) == WRITE;
	unsigned short sectors_per_frame =
		queue_logical_block_size(q) >> SECTOR_BITS;

	ide_debug_log(IDE_DBG_RQ, "rq->cmd[0]: 0x%x, rq->cmd_flags: 0x%x, "
				  "secs_per_frame: %u",
				  rq->cmd[0], rq->cmd_flags, sectors_per_frame);

	if (write) {
		/* disk has become write protected */
		if (get_disk_ro(cd->disk))
			return ide_stopped;
	} else {
		/*
                 * We may be retrying this request after an error.  Fix up any
                 * weirdness which might be present in the request packet.
                 */
		q->prep_rq_fn(q, rq);
	}

	/* fs requests *must* be hardware frame aligned */
	if ((blk_rq_sectors(rq) & (sectors_per_frame - 1)) ||
	    (blk_rq_pos(rq) & (sectors_per_frame - 1)))
		return ide_stopped;

	/* use DMA, if possible */
	drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);

	if (write)
		cd->devinfo.media_written = 1;

	rq->timeout = ATAPI_WAIT_PC;

	return ide_started;
}


Contributors
PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz7241.14%425.00%


Jens Axboe4224.00%16.25%


Andrew Morton2413.71%16.25%


Borislav Petkov2112.00%637.50%


Tejun Heo95.14%212.50%


Peter Osterlund63.43%16.25%


Martin K. Petersen10.57%16.25%


Total175100.00%16100.00%






static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
{

	ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
				  rq->cmd[0], rq->cmd_type);

	if (blk_rq_is_scsi(rq))
		rq->rq_flags |= RQF_QUIET;
	else
		rq->rq_flags &= ~RQF_FAILED;

	drive->dma = 0;

	/* sg request */
	if (rq->bio) {
		struct request_queue *q = drive->queue;
		char *buf = bio_data(rq->bio);
		unsigned int alignment;

		drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);

		/*
                 * check if dma is safe
                 *
                 * NOTE! The "len" and "addr" checks should possibly have
                 * separate masks.
                 */
		alignment = queue_dma_alignment(q) | q->dma_pad_mask;
		if ((unsigned long)buf & alignment
		    || blk_rq_bytes(rq) & q->dma_pad_mask
		    || object_is_on_stack(buf))
			drive->dma = 0;
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe4731.54%314.29%


FUJITA Tomonori3926.17%314.29%


Borislav Petkov2617.45%733.33%


Bartlomiej Zolnierkiewicz1711.41%29.52%


Tejun Heo96.04%29.52%


Christoph Hellwig74.70%29.52%


Linus Torvalds42.68%29.52%


Total149100.00%21100.00%






static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
					sector_t block)
{
	struct ide_cmd cmd;
	int uptodate = 0;
	unsigned int nsectors;

	ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu",
				  rq->cmd[0], (unsigned long long)block);

	if (drive->debug_mask & IDE_DBG_RQ)
		blk_dump_rq_flags(rq, "ide_cd_do_request");

	switch (req_op(rq)) {
	default:
		if (cdrom_start_rw(drive, rq) == ide_stopped)
			goto out_end;
		break;
	case REQ_OP_SCSI_IN:
	case REQ_OP_SCSI_OUT:
	handle_pc:
		if (!rq->timeout)
			rq->timeout = ATAPI_WAIT_PC;
		cdrom_do_block_pc(drive, rq);
		break;
	case REQ_OP_DRV_IN:
	case REQ_OP_DRV_OUT:
		switch (ide_req(rq)->type) {
		case ATA_PRIV_MISC:
			/* right now this can only be a reset... */
			uptodate = 1;
			goto out_end;
		case ATA_PRIV_SENSE:
		case ATA_PRIV_PC:
			goto handle_pc;
		default:
			BUG();
		}
	}

	/* prepare sense request for this command */
	ide_prep_sense(drive, rq);

	memset(&cmd, 0, sizeof(cmd));

	if (rq_data_dir(rq))
		cmd.tf_flags |= IDE_TFLAG_WRITE;

	cmd.rq = rq;

	if (!blk_rq_is_passthrough(rq) || blk_rq_bytes(rq)) {
		ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
		ide_map_sg(drive, &cmd);
	}

	return ide_issue_pc(drive, &cmd);
out_end:
	nsectors = blk_rq_sectors(rq);

	if (nsectors == 0)
		nsectors = 1;

	ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);

	return ide_stopped;
}


Contributors
PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz11640.99%826.67%


Borislav Petkov6824.03%1136.67%


Christoph Hellwig5017.67%310.00%


Jens Axboe2910.25%13.33%


Tejun Heo93.18%310.00%


Linus Torvalds41.41%13.33%


Alexander Beregalov31.06%13.33%


Connor Hansen31.06%13.33%


Andrew Morton10.35%13.33%


Total283100.00%30100.00%



/*
 * Ioctl handling.
 *
 * Routines which queue packet commands take as a final argument a pointer to a
 * request_sense struct. If execution of the command results in an error with a
 * CHECK CONDITION status, this structure will be filled with the results of the
 * subsequent request sense command. The pointer can also be NULL, in which case
 * no sense information is returned.
 */



static void msf_from_bcd(struct atapi_msf *msf)
{
	msf->minute = bcd2bin(msf->minute);
	msf->second = bcd2bin(msf->second);
	msf->frame  = bcd2bin(msf->frame);
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe4090.91%133.33%


Adrian Bunk36.82%133.33%


Borislav Petkov12.27%133.33%


Total44100.00%3100.00%






int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
{
	struct cdrom_info *info = drive->driver_data;
	struct cdrom_device_info *cdi = &info->devinfo;
	unsigned char cmd[BLK_MAX_CDB];

	ide_debug_log(IDE_DBG_FUNC, "enter");

	memset(cmd, 0, BLK_MAX_CDB);
	cmd[0] = GPCMD_TEST_UNIT_READY;

	/*
         * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
         * instead of supporting the LOAD_UNLOAD opcode.
         */
	cmd[7] = cdi->sanyo_slot % 3;

	return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, RQF_QUIET);
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe5861.05%110.00%


FUJITA Tomonori2324.21%110.00%


Borislav Petkov88.42%330.00%


Linus Torvalds22.11%110.00%


Bartlomiej Zolnierkiewicz22.11%220.00%


Christoph Hellwig11.05%110.00%


Harvey Harrison11.05%110.00%


Total95100.00%10100.00%






static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
			       unsigned long *sectors_per_frame,
			       struct request_sense *sense)
{
	struct {
		__be32 lba;
		__be32 blocklen;
	} capbuf;

	int stat;
	unsigned char cmd[BLK_MAX_CDB];
	unsigned len = sizeof(capbuf);
	u32 blocklen;

	ide_debug_log(IDE_DBG_FUNC, "enter");

	memset(cmd, 0, BLK_MAX_CDB);
	cmd[0] = GPCMD_READ_CDVD_CAPACITY;

	stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
			       RQF_QUIET);
	if (stat)
		return stat;

	/*
         * Sanity check the given block size, in so far as making
         * sure the sectors_per_frame we give to the caller won't
         * end up being bogus.
         */
	blocklen = be32_to_cpu(capbuf.blocklen);
	blocklen = (blocklen >> SECTOR_BITS) << SECTOR_BITS;
	switch (blocklen) {
	case 512:
	case 1024:
	case 2048:
	case 4096:
		break;
	default:
		printk_once(KERN_ERR PFX "%s: weird block size %u; "
				"setting default block size to 2048\n",
				drive->name, blocklen);
		blocklen = 2048;
		break;
	}

	*capacity = 1 + be32_to_cpu(capbuf.lba);
	*sectors_per_frame = blocklen >> SECTOR_BITS;

	ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu",
				     *capacity, *sectors_per_frame);

	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe7637.81%212.50%


Borislav Petkov6029.85%425.00%


FUJITA Tomonori3215.92%16.25%


Petr Tesarik125.97%16.25%


David S. Miller115.47%16.25%


Frans Pop31.49%16.25%


Bartlomiej Zolnierkiewicz31.49%318.75%


Harvey Harrison21.00%16.25%


Christoph Hellwig10.50%16.25%


Linus Torvalds10.50%16.25%


Total201100.00%16100.00%






static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
				int format, char *buf, int buflen,
				struct request_sense *sense)
{
	unsigned char cmd[BLK_MAX_CDB];

	ide_debug_log(IDE_DBG_FUNC, "enter");

	memset(cmd, 0, BLK_MAX_CDB);

	cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
	cmd[6] = trackno;
	cmd[7] = (buflen >> 8);
	cmd[8] = (buflen & 0xff);
	cmd[9] = (format << 6);

	if (msf_flag)
		cmd[1] = 2;

	return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, RQF_QUIET);
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe7858.65%112.50%


Borislav Petkov2418.05%337.50%


FUJITA Tomonori2317.29%112.50%


Linus Torvalds64.51%112.50%


Bartlomiej Zolnierkiewicz10.75%112.50%


Christoph Hellwig10.75%112.50%


Total133100.00%8100.00%



/* Try to read the entire TOC for the disk into our internal buffer. */



int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
{
	int stat, ntracks, i;
	struct cdrom_info *info = drive->driver_data;
	struct cdrom_device_info *cdi = &info->devinfo;
	struct atapi_toc *toc = info->toc;
	struct {
		struct atapi_toc_header hdr;
		struct atapi_toc_entry  ent;
	} ms_tmp;
	long last_written;
	unsigned long sectors_per_frame = SECTORS_PER_FRAME;

	ide_debug_log(IDE_DBG_FUNC, "enter");

	if (toc == NULL) {
		/* try to allocate space */
		toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
		if (toc == NULL) {
			printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
					drive->name);
			return -ENOMEM;
		}
		info->toc = toc;
	}

	/*
         * Check to see if the existing data is still valid. If it is,
         * just return.
         */
	(void) cdrom_check_status(drive, sense);

	if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
		return 0;

	/* try to get the total cdrom capacity and sector size */
	stat = cdrom_read_capacity(drive, &toc->capacity, &sectors_per_frame,
				   sense);
	if (stat)
		toc->capacity = 0x1fffff;

	set_capacity(info->disk, toc->capacity * sectors_per_frame);
	/* save a private copy of the TOC capacity for error handling */
	drive->probed_capacity = toc->capacity * sectors_per_frame;

	blk_queue_logical_block_size(drive->queue,
				     sectors_per_frame << SECTOR_BITS);

	/* first read just the header, so we know how long the TOC is */
	stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
				    sizeof(struct atapi_toc_header), sense);
	if (stat)
		return stat;

	if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
		toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
		toc->hdr.last_track  = bcd2bin(toc->hdr.last_track);
	}

	ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
	if (ntracks <= 0)
		return -EIO;
	if (ntracks > MAX_TRACKS)
		ntracks = MAX_TRACKS;

	/* now read the whole schmeer */
	stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
				  (char *)&toc->hdr,
				   sizeof(struct atapi_toc_header) +
				   (ntracks + 1) *
				   sizeof(struct atapi_toc_entry), sense);

	if (stat && toc->hdr.first_track > 1) {
		/*
                 * Cds with CDI tracks only don't have any TOC entries, despite
                 * of this the returned values are
                 * first_track == last_track = number of CDI tracks + 1,
                 * so that this case is indistinguishable from the same layout
                 * plus an additional audio track. If we get an error for the
                 * regular case, we assume a CDI without additional audio
                 * tracks. In this case the readable TOC is empty (CDI tracks
                 * are not included) and only holds the Leadout entry.
                 *
                 * Heiko Eißfeldt.
                 */
		ntracks = 0;
		stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
					   (char *)&toc->hdr,
					   sizeof(struct atapi_toc_header) +
					   (ntracks + 1) *
					   sizeof(struct atapi_toc_entry),
					   sense);
		if (stat)
			return stat;

		if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
			toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT);
			toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT);
		} else {
			toc->hdr.first_track = CDROM_LEADOUT;
			toc->hdr.last_track = CDROM_LEADOUT;
		}
	}

	if (stat)
		return stat;

	toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);

	if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
		toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
		toc->hdr.last_track  = bcd2bin(toc->hdr.last_track);
	}

	for (i = 0; i <= ntracks; i++) {
		if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
			if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
				toc->ent[i].track = bcd2bin(toc->ent[i].track);
			msf_from_bcd(&toc->ent[i].addr.msf);
		}
		toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
						  toc->ent[i].addr.msf.second,
						  toc->ent[i].addr.msf.frame);
	}

	if (toc->hdr.first_track != CDROM_LEADOUT) {
		/* read the multisession information */
		stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
					   sizeof(ms_tmp), sense);
		if (stat)
			return stat;

		toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
	} else {
		ms_tmp.hdr.last_track = CDROM_LEADOUT;
		ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
		toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
	}

	if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
		/* re-read multisession information using MSF format */
		stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
					   sizeof(ms_tmp), sense);
		if (stat)
			return stat;

		msf_from_bcd(&ms_tmp.ent.addr.msf);
		toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
						   ms_tmp.ent.addr.msf.second,
						   ms_tmp.ent.addr.msf.frame);
	}

	toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);

	/* now try to get the total cdrom capacity */
	stat = cdrom_get_last_written(cdi, &last_written);
	if (!stat && (last_written > toc->capacity)) {
		toc->capacity = last_written;
		set_capacity(info->disk, toc->capacity * sectors_per_frame);
		drive->probed_capacity = toc->capacity * sectors_per_frame;
	}

	/* Remember that we've read this stuff. */
	drive->atapi_flags |= IDE_AFLAG_TOC_VALID;

	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe72275.44%314.29%


Andrew Morton656.79%29.52%


Luca Tettamanti616.37%14.76%


Borislav Petkov535.54%628.57%


Alan Cox202.09%14.76%


Bartlomiej Zolnierkiewicz171.78%419.05%


Adrian Bunk70.73%14.76%


Jesper Juhl60.63%14.76%


Al Viro50.52%14.76%


Martin K. Petersen10.10%14.76%


Total957100.00%21100.00%






int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
{
	struct cdrom_info *info = drive->driver_data;
	struct cdrom_device_info *cdi = &info->devinfo;
	struct packet_command cgc;
	int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;

	ide_debug_log(IDE_DBG_FUNC, "enter");

	if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
		size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;

	init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
	do {
		/* we seem to get stat=0x01,err=0x00 the first time (??) */
		stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
		if (!stat)
			break;
	} while (--attempts);
	return stat;
}


Contributors
PersonTokensPropCommitsCommitProp
Éric Piel6556.52%112.50%


Bartlomiej Zolnierkiewicz2118.26%337.50%


Jens Axboe1916.52%112.50%


Borislav Petkov108.70%337.50%


Total115100.00%8100.00%






void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
{
	struct cdrom_info *cd = drive->driver_data;
	u16 curspeed, maxspeed;

	ide_debug_log(IDE_DBG_FUNC, "enter");

	if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
		curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
		maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
	} else {
		curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
		maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
	}

	ide_debug_log(IDE_DBG_PROBE, "curspeed: %u, maxspeed: %u",
				     curspeed, maxspeed);

	cd->current_speed = DIV_ROUND_CLOSEST(curspeed, 176);
	cd->max_speed = DIV_ROUND_CLOSEST(maxspeed, 176);
}


Contributors
PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz5537.16%545.45%


Harvey Harrison4027.03%19.09%


Éric Piel2718.24%19.09%


Borislav Petkov1812.16%327.27%


Julia Lawall85.41%19.09%


Total148100.00%11100.00%




#define IDE_CD_CAPABILITIES \
	(CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
         CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
         CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
         CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
         CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)


static const struct cdrom_device_ops ide_cdrom_dops = {
	.open			= ide_cdrom_open_real,
	.release		= ide_cdrom_release_real,
	.drive_status		= ide_cdrom_drive_status,
	.check_events		= ide_cdrom_check_events_real,
	.tray_move		= ide_cdrom_tray_move,
	.lock_door		= ide_cdrom_lock_door,
	.select_speed		= ide_cdrom_select_speed,
	.get_last_session	= ide_cdrom_get_last_session,
	.get_mcn		= ide_cdrom_get_mcn,
	.reset			= ide_cdrom_reset,
	.audio_ioctl		= ide_cdrom_audio_ioctl,
	.capability		= IDE_CD_CAPABILITIES,
	.generic_packet		= ide_cdrom_packet,
};




static int ide_cdrom_register(ide_drive_t *drive, int nslots)
{
	struct cdrom_info *info = drive->driver_data;
	struct cdrom_device_info *devinfo = &info->devinfo;

	ide_debug_log(IDE_DBG_PROBE, "nslots: %d", nslots);

	devinfo->ops = &ide_cdrom_dops;
	devinfo->speed = info->current_speed;
	devinfo->capacity = nslots;
	devinfo->handle = drive;
	strcpy(devinfo->name, drive->name);

	if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
		devinfo->mask |= CDC_SELECT_SPEED;

	devinfo->disk = info->disk;
	return register_cdrom(devinfo);
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe7166.36%112.50%


Éric Piel1211.21%112.50%


Borislav Petkov1211.21%337.50%


Bartlomiej Zolnierkiewicz1211.21%337.50%


Total107100.00%8100.00%






static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
{
	struct cdrom_info *cd = drive->driver_data;
	struct cdrom_device_info *cdi = &cd->devinfo;
	u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
	mechtype_t mechtype;
	int nslots = 1;

	ide_debug_log(IDE_DBG_PROBE, "media: 0x%x, atapi_flags: 0x%lx",
				     drive->media, drive->atapi_flags);

	cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
		     CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
		     CDC_MO_DRIVE | CDC_RAM);

	if (drive->media == ide_optical) {
		cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
		printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
				drive->name);
		return nslots;
	}

	if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
		drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
		cdi->mask &= ~CDC_PLAY_AUDIO;
		return nslots;
	}

	/*
         * We have to cheat a little here. the packet will eventually be queued
         * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
         * Since this device hasn't been registered with the Uniform layer yet,
         * it can't do this. Same goes for cdi->ops.
         */
	cdi->handle = drive;
	cdi->ops = &ide_cdrom_dops;

	if (ide_cdrom_get_capabilities(drive, buf))
		return 0;

	if ((buf[8 + 6] & 0x01) == 0)
		drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
	if (buf[8 + 6] & 0x08)
		drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
	if (buf[8 + 3] & 0x01)
		cdi->mask &= ~CDC_CD_R;
	if (buf[8 + 3] & 0x02)
		cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
	if (buf[8 + 2] & 0x38)
		cdi->mask &= ~CDC_DVD;
	if (buf[8 + 3] & 0x20)
		cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
	if (buf[8 + 3] & 0x10)
		cdi->mask &= ~CDC_DVD_R;
	if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
		cdi->mask &= ~CDC_PLAY_AUDIO;

	mechtype = buf[8 + 6] >> 5;
	if (mechtype == mechtype_caddy ||
	    mechtype == mechtype_popup ||
	    (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE))
		cdi->mask |= CDC_CLOSE_TRAY;

	if (cdi->sanyo_slot > 0) {
		cdi->mask &= ~CDC_SELECT_DISC;
		nslots = 3;
	} else if (mechtype == mechtype_individual_changer ||
		   mechtype == mechtype_cartridge_changer) {
		nslots = cdrom_number_of_slots(cdi);
		if (nslots > 1)
			cdi->mask &= ~CDC_SELECT_DISC;
	}

	ide_cdrom_update_speed(drive, buf);

	printk(KERN_INFO PFX "%s: ATAPI", drive->name);

	/* don't print speed if the drive reported 0 */
	if (cd->max_speed)
		printk(KERN_CONT " %dX", cd->max_speed);

	printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");

	if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
		printk(KERN_CONT " DVD%s%s",
				 (cdi->mask & CDC_DVD_R) ? "" : "-R",
				 (cdi->mask & CDC_DVD_RAM) ? "" : "/RAM");

	if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
		printk(KERN_CONT " CD%s%s",
				 (cdi->mask & CDC_CD_R) ? "" : "-R",
				 (cdi->mask & CDC_CD_RW) ? "" : "/RW");

	if ((cdi->mask & CDC_SELECT_DISC) == 0)
		printk(KERN_CONT " changer w/%d slots", nslots);
	else
		printk(KERN_CONT " drive");

	printk(KERN_CONT ", %dkB Cache\n",
			 be16_to_cpup((__be16 *)&buf[8 + 12]));

	return nslots;
}


Contributors
PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz29847.53%834.78%


Jens Axboe26141.63%313.04%


Borislav Petkov457.18%730.43%


Andrew Morton182.87%28.70%


Peter Osterlund20.32%14.35%


Harvey Harrison20.32%14.35%


Éric Piel10.16%14.35%


Total627100.00%23100.00%



/* standard prep_rq_fn that builds 10 byte cmds */



static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
{
	int hard_sect = queue_logical_block_size(q);
	long block = (long)blk_rq_pos(rq) / (hard_sect >> 9);
	unsigned long blocks = blk_rq_sectors(rq) / (hard_sect >> 9);
	struct scsi_request *req = scsi_req(rq);

	memset(req->cmd, 0, BLK_MAX_CDB);

	if (rq_data_dir(rq) == READ)
		req->cmd[0] = GPCMD_READ_10;
	else
		req->cmd[0] = GPCMD_WRITE_10;

	/*
         * fill in lba
         */
	req->cmd[2] = (block >> 24) & 0xff;
	req->cmd[3] = (block >> 16) & 0xff;
	req->cmd[4] = (block >>  8) & 0xff;
	req->cmd[5] = block & 0xff;

	/*
         * and transfer length
         */
	req->cmd[7] = (blocks >> 8) & 0xff;
	req->cmd[8] = blocks & 0xff;
	req->cmd_len = 10;
	return BLKPREP_OK;
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe16181.31%333.33%


Christoph Hellwig2010.10%111.11%


Tejun Heo63.03%111.11%


Linus Torvalds52.53%111.11%


Andrew Morton42.02%111.11%


Martin K. Petersen10.51%111.11%


FUJITA Tomonori10.51%111.11%


Total198100.00%9100.00%



/*
 * Most of the SCSI commands are supported directly by ATAPI devices.
 * This transform handles the few exceptions.
 */



static int ide_cdrom_prep_pc(struct request *rq)
{
	u8 *c = scsi_req(rq)->cmd;

	/* transform 6-byte read/write commands to the 10-byte version */
	if (c[0] == READ_6 || c[0] == WRITE_6) {
		c[8] = c[4];
		c[5] = c[3];
		c[4] = c[2];
		c[3] = c[1] & 0x1f;
		c[2] = 0;
		c[1] &= 0xe0;
		c[0] += (READ_10 - READ_6);
		scsi_req(rq)->cmd_len = 10;
		return BLKPREP_OK;
	}

	/*
         * it's silly to pretend we understand 6-byte sense commands, just
         * reject with ILLEGAL_REQUEST and the caller should take the
         * appropriate action
         */
	if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
		scsi_req(rq)->result = ILLEGAL_REQUEST;
		return BLKPREP_KILL;
	}

	return BLKPREP_OK;
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe13788.96%120.00%


Christoph Hellwig106.49%240.00%


Linus Torvalds63.90%120.00%


Borislav Petkov10.65%120.00%


Total154100.00%5100.00%






static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
{
	if (!blk_rq_is_passthrough(rq))
		return ide_cdrom_prep_fs(q, rq);
	else if (blk_rq_is_scsi(rq))
		return ide_cdrom_prep_pc(rq);

	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe4285.71%375.00%


Christoph Hellwig714.29%125.00%


Total49100.00%4100.00%




struct cd_list_entry {
	
const char	*id_model;
	
const char	*id_firmware;
	
unsigned int	cd_flags;
};

#ifdef CONFIG_IDE_PROC_FS



static sector_t ide_cdrom_capacity(ide_drive_t *drive)
{
	unsigned long capacity, sectors_per_frame;

	if (cdrom_read_capacity(drive, &capacity, &sectors_per_frame, NULL))
		return 0;

	return capacity * sectors_per_frame;
}


Contributors
PersonTokensPropCommitsCommitProp
Borislav Petkov39100.00%1100.00%


Total39100.00%1100.00%






static int idecd_capacity_proc_show(struct seq_file *m, void *v)
{
	ide_drive_t *drive = m->private;

	seq_printf(m, "%llu\n", (long long)ide_cdrom_capacity(drive));
	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Borislav Petkov2866.67%150.00%


Alexey Dobriyan1433.33%150.00%


Total42100.00%2100.00%






static int idecd_capacity_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, idecd_capacity_proc_show, PDE_DATA(inode));
}


Contributors
PersonTokensPropCommitsCommitProp
Alexey Dobriyan2379.31%133.33%


Borislav Petkov517.24%133.33%


Al Viro13.45%133.33%


Total29100.00%3100.00%




static const struct file_operations idecd_capacity_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= idecd_capacity_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};


static ide_proc_entry_t idecd_proc[] = {
	{ "capacity", S_IFREG|S_IRUGO, &idecd_capacity_proc_fops },
	{}
};




static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive)
{
	return idecd_proc;
}


Contributors
PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz14100.00%1100.00%


Total14100.00%1100.00%






static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive)
{
	return NULL;
}

Contributors
PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz16100.00%2100.00%


Total16100.00%2100.00%



#endif


static const struct cd_list_entry ide_cd_quirks_list[] = {
	/* SCR-3231 doesn't support the SET_CD_SPEED command. */
	{ "SAMSUNG CD-ROM SCR-3231", NULL,   IDE_AFLAG_NO_SPEED_SELECT	     },
	/* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
	{ "NEC CD-ROM DRIVE:260",    "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
					     IDE_AFLAG_PRE_ATAPI12,            },
	/* Vertos 300, some versions of this drive like to talk BCD. */
	{ "V003S0DS",		     NULL,   IDE_AFLAG_VERTOS_300_SSD,            },
	/* Vertos 600 ESD. */
	{ "V006E0DS",		     NULL,   IDE_AFLAG_VERTOS_600_ESD,            },
	/*
         * Sanyo 3 CD changer uses a non-standard command for CD changing
         * (by default standard ATAPI support for CD changers is used).
         */
	{ "CD-ROM CDR-C3 G",	     NULL,   IDE_AFLAG_SANYO_3CD	     },
	{ "CD-ROM CDR-C3G",	     NULL,   IDE_AFLAG_SANYO_3CD	     },
	{ "CD-ROM CDR_C36",	     NULL,   IDE_AFLAG_SANYO_3CD	     },
	/* Stingray 8X CD-ROM. */
	{ "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
	/*
         * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
         * mode sense page capabilities size, but older drives break.
         */
	{ "ATAPI CD ROM DRIVE 50X MAX",	NULL,	IDE_AFLAG_FULL_CAPS_PAGE     },
	{ "WPI CDS-32X",		NULL,	IDE_AFLAG_FULL_CAPS_PAGE     },
	/* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
	{ "",			     "241N", IDE_AFLAG_LE_SPEED_FIELDS       },
	/*
         * Some drives used by Apple don't advertise audio play
         * but they do support reading TOC & audio datas.
         */
	{ "MATSHITADVD-ROM SR-8187", NULL,   IDE_AFLAG_PLAY_AUDIO_OK	     },
	{ "MATSHITADVD-ROM SR-8186", NULL,   IDE_AFLAG_PLAY_AUDIO_OK	     },
	{ "MATSHITADVD-ROM SR-8176", NULL,   IDE_AFLAG_PLAY_AUDIO_OK	     },
	{ "MATSHITADVD-ROM SR-8174", NULL,   IDE_AFLAG_PLAY_AUDIO_OK	     },
	{ "Optiarc DVD RW AD-5200A", NULL,   IDE_AFLAG_PLAY_AUDIO_OK	     },
	{ "Optiarc DVD RW AD-7200A", NULL,   IDE_AFLAG_PLAY_AUDIO_OK	     },
	{ "Optiarc DVD RW AD-7543A", NULL,   IDE_AFLAG_NO_AUTOCLOSE	     },
	{ "TEAC CD-ROM CD-224E",     NULL,   IDE_AFLAG_NO_AUTOCLOSE	     },
	{ NULL, NULL, 0 }
};




static unsigned int ide_cd_flags(u16 *id)
{
	const struct cd_list_entry *cle = ide_cd_quirks_list;

	while (cle->id_model) {
		if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
		    (cle->id_firmware == NULL ||
		     strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
			return cle->cd_flags;
		cle++;
	}

	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz7083.33%480.00%


Jens Axboe1416.67%120.00%


Total84100.00%5100.00%






static int ide_cdrom_setup(ide_drive_t *drive)
{
	struct cdrom_info *cd = drive->driver_data;
	struct cdrom_device_info *cdi = &cd->devinfo;
	struct request_queue *q = drive->queue;
	u16 *id = drive->id;
	char *fw_rev = (char *)&id[ATA_ID_FW_REV];
	int nslots;

	ide_debug_log(IDE_DBG_PROBE, "enter");

	blk_queue_prep_rq(q, ide_cdrom_prep_fn);
	blk_queue_dma_alignment(q, 31);
	blk_queue_update_dma_pad(q, 15);

	drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
	drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id);

	if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
	    fw_rev[4] == '1' && fw_rev[6] <= '2')
		drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
				     IDE_AFLAG_TOCADDR_AS_BCD);
	else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
		 fw_rev[4] == '1' && fw_rev[6] <= '2')
		drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
	else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
		/* 3 => use CD in slot 0 */
		cdi->sanyo_slot = 3;

	nslots = ide_cdrom_probe_capabilities(drive);

	blk_queue_logical_block_size(q, CD_FRAMESIZE);

	if (ide_cdrom_register(drive, nslots)) {
		printk(KERN_ERR PFX "%s: %s failed to register device with the"
				" cdrom driver.\n", drive->name, __func__);
		cd->devinfo.handle = NULL;
		return 1;
	}

	ide_proc_register_driver(drive, cd->driver);
	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz11044.35%844.44%


Jens Axboe9638.71%15.56%


Borislav Petkov3413.71%633.33%


FUJITA Tomonori62.42%15.56%


Andrew Morton10.40%15.56%


Martin K. Petersen10.40%15.56%


Total248100.00%18100.00%






static void ide_cd_remove(ide_drive_t *drive)
{
	struct cdrom_info *info = drive->driver_data;

	ide_debug_log(IDE_DBG_FUNC, "enter");

	ide_proc_unregister_driver(drive, info->driver);
	device_del(&info->dev);
	del_gendisk(info->disk);

	mutex_lock(&idecd_ref_mutex);
	put_device(&info->dev);
	mutex_unlock(&idecd_ref_mutex);
}


Contributors
PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz4361.43%550.00%


Al Viro1724.29%220.00%


Borislav Petkov710.00%220.00%


Russell King34.29%110.00%


Total70100.00%10100.00%






static void ide_cd_release(struct device *dev)
{
	struct cdrom_info *info = to_ide_drv(dev, cdrom_info);
	struct cdrom_device_info *devinfo = &info->devinfo;
	ide_drive_t *drive = info->drive;
	struct gendisk *g = info->disk;

	ide_debug_log(IDE_DBG_FUNC, "enter");

	kfree(info->toc);
	if (devinfo->handle == drive)
		unregister_cdrom(devinfo);
	drive->driver_data = NULL;
	blk_queue_prep_rq(drive->queue, NULL);
	g->private_data = NULL;
	put_disk(g);
	kfree(info);
}


Contributors
PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz5853.70%333.33%


Al Viro3027.78%111.11%


Borislav Petkov109.26%333.33%


Alan Cox98.33%111.11%


Akinobu Mita10.93%111.11%


Total108100.00%9100.00%



static int ide_cd_probe(ide_drive_t *);


static struct ide_driver ide_cdrom_driver = {
	.gen_driver = {
		.owner		= THIS_MODULE,
		.name		= "ide-cdrom",
		.bus		= &ide_bus_type,
        },
	.probe			= ide_cd_probe,
	.remove			= ide_cd_remove,
	.version		= IDECD_VERSION,
	.do_request		= ide_cd_do_request,
#ifdef CONFIG_IDE_PROC_FS
	.proc_entries		= ide_cd_proc_entries,
	.proc_devsets		= ide_cd_proc_devsets,
#endif
};




static int idecd_open(struct block_device *bdev, fmode_t mode)
{
	struct cdrom_info *info;
	int rc = -ENXIO;

	mutex_lock(&ide_cd_mutex);
	info = ide_cd_get(bdev->bd_disk);
	if (!info)
		goto out;

	rc = cdrom_open(&info->devinfo, bdev, mode);
	if (rc < 0)
		ide_cd_put(info);
out:
	mutex_unlock(&ide_cd_mutex);
	return rc;
}


Contributors
PersonTokensPropCommitsCommitProp
Arnd Bergmann2630.95%225.00%


Al Viro2327.38%337.50%


Jens Axboe1821.43%112.50%


Bartlomiej Zolnierkiewicz1315.48%112.50%


Paolo Ciarrocchi44.76%112.50%


Total84100.00%8100.00%






static void idecd_release(struct gendisk *disk, fmode_t mode)
{
	struct cdrom_info *info = ide_drv_g(disk, cdrom_info);

	mutex_lock(&ide_cd_mutex);
	cdrom_release(&info->devinfo, mode);

	ide_cd_put(info);
	mutex_unlock(&ide_cd_mutex);
}


Contributors
PersonTokensPropCommitsCommitProp
Al Viro1732.08%444.44%


Arnd Bergmann1222.64%222.22%


Jens Axboe1120.75%111.11%


Bartlomiej Zolnierkiewicz1018.87%111.11%


Borislav Petkov35.66%111.11%


Total53100.00%9100.00%






static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
{
	struct packet_command cgc;
	char buffer[16];
	int stat;
	char spindown;

	if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
		return -EFAULT;

	init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);

	stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
	if (stat)
		return stat;

	buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
	return cdrom_mode_select(cdi, &cgc);
}


Contributors
PersonTokensPropCommitsCommitProp
Christoph Hellwig120100.00%1100.00%


Total120100.00%1100.00%






static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
{
	struct packet_command cgc;
	char buffer[16];
	int stat;
	char spindown;

	init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);

	stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
	if (stat)
		return stat;

	spindown = buffer[11] & 0x0f;
	if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
		return -EFAULT;
	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Christoph Hellwig103100.00%1100.00%


Total103100.00%1100.00%






static int idecd_locked_ioctl(struct block_device *bdev, fmode_t mode,
			unsigned int cmd, unsigned long arg)
{
	struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
	int err;

	switch (cmd) {
	case CDROMSETSPINDOWN:
		return idecd_set_spindown(&info->devinfo, arg);
	case CDROMGETSPINDOWN:
		return idecd_get_spindown(&info->devinfo, arg);
	default:
		break;
	}

	err = generic_ide_ioctl(info->drive, bdev, cmd, arg);
	if (err == -EINVAL)
		err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg);

	return err;
}


Contributors
PersonTokensPropCommitsCommitProp
Al Viro4336.44%436.36%


Christoph Hellwig3630.51%19.09%


Jens Axboe2319.49%218.18%


Bartlomiej Zolnierkiewicz1210.17%218.18%


Borislav Petkov32.54%19.09%


Arnd Bergmann10.85%19.09%


Total118100.00%11100.00%






static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
			     unsigned int cmd, unsigned long arg)
{
	int ret;

	mutex_lock(&ide_cd_mutex);
	ret = idecd_locked_ioctl(bdev, mode, cmd, arg);
	mutex_unlock(&ide_cd_mutex);

	return ret;
}



Contributors
PersonTokensPropCommitsCommitProp
Arnd Bergmann53100.00%2100.00%


Total53100.00%2100.00%






static unsigned int idecd_check_events(struct gendisk *disk,
				       unsigned int clearing)
{
	struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
	return cdrom_check_events(&info->devinfo, clearing);
}


Contributors
PersonTokensPropCommitsCommitProp
Al Viro2256.41%233.33%


Tejun Heo923.08%116.67%


Bartlomiej Zolnierkiewicz37.69%116.67%


Borislav Petkov37.69%116.67%


Jens Axboe25.13%116.67%


Total39100.00%6100.00%






static int idecd_revalidate_disk(struct gendisk *disk)
{
	struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
	struct request_sense sense;

	ide_cd_read_toc(info->drive, &sense);

	return  0;
}


Contributors
PersonTokensPropCommitsCommitProp
Al Viro2665.00%233.33%


Bartlomiej Zolnierkiewicz820.00%233.33%


Borislav Petkov37.50%116.67%


Jens Axboe37.50%116.67%


Total40100.00%6100.00%




static const struct block_device_operations idecd_ops = {
	.owner			= THIS_MODULE,
	.open			= idecd_open,
	.release		= idecd_release,
	.ioctl			= idecd_ioctl,
	.check_events		= idecd_check_events,
	.revalidate_disk	= idecd_revalidate_disk
};

/* module options */

static unsigned long debug_mask;
module_param(debug_mask, ulong, 0644);

MODULE_DESCRIPTION("ATAPI CD-ROM Driver");




static int ide_cd_probe(ide_drive_t *drive)
{
	struct cdrom_info *info;
	struct gendisk *g;
	struct request_sense sense;

	ide_debug_log(IDE_DBG_PROBE, "driver_req: %s, media: 0x%x",
				     drive->driver_req, drive->media);

	if (!strstr("ide-cdrom", drive->driver_req))
		goto failed;

	if (drive->media != ide_cdrom && drive->media != ide_optical)
		goto failed;

	drive->debug_mask = debug_mask;
	drive->irq_handler = cdrom_newpc_intr;

	info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
	if (info == NULL) {
		printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
				drive->name);
		goto failed;
	}

	g = alloc_disk(1 << PARTN_BITS);
	if (!g)
		goto out_free_cd;

	ide_init_disk(g, drive);

	info->dev.parent = &drive->gendev;
	info->dev.release = ide_cd_release;
	dev_set_name(&info->dev, "%s", dev_name(&drive->gendev));

	if (device_register(&info->dev))
		goto out_free_disk;

	info->drive = drive;
	info->driver = &ide_cdrom_driver;
	info->disk = g;

	g->private_data = &info->driver;

	drive->driver_data = info;

	g->minors = 1;
	g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
	if (ide_cdrom_setup(drive)) {
		put_device(&info->dev);
		goto failed;
	}

	ide_cd_read_toc(drive, &sense);
	g->fops = &idecd_ops;
	g->flags |= GENHD_FL_REMOVABLE | GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE;
	device_add_disk(&drive->gendev, g);
	return 0;

out_free_disk:
	put_disk(g);
out_free_cd:
	kfree(info);
failed:
	return -ENODEV;
}


Contributors
PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz12439.62%726.92%


Al Viro8025.56%623.08%


Jens Axboe5818.53%27.69%


Borislav Petkov309.58%415.38%


Andrew Morton82.56%27.69%


Dan J Williams61.92%13.85%


Kees Cook20.64%13.85%


Russell King20.64%13.85%


Tejun Heo20.64%13.85%


Deepak Saxena10.32%13.85%


Total313100.00%26100.00%






static void __exit ide_cdrom_exit(void)
{
	driver_unregister(&ide_cdrom_driver.gen_driver);
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe1376.47%133.33%


Bartlomiej Zolnierkiewicz317.65%133.33%


Al Viro15.88%133.33%


Total17100.00%3100.00%






static int __init ide_cdrom_init(void)
{
	printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
	return driver_register(&ide_cdrom_driver.gen_driver);
}


Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe1142.31%116.67%


Borislav Petkov830.77%116.67%


Bartlomiej Zolnierkiewicz519.23%233.33%


Al Viro27.69%233.33%


Total26100.00%6100.00%



MODULE_ALIAS("ide:*m-cdrom*");
MODULE_ALIAS("ide-cd");

module_init(ide_cdrom_init);

module_exit(ide_cdrom_exit);
MODULE_LICENSE("GPL");

Overall Contributors
PersonTokensPropCommitsCommitProp
Jens Axboe279933.78%198.23%


Bartlomiej Zolnierkiewicz212525.65%8335.93%


Borislav Petkov103012.43%3716.02%


Christoph Hellwig6517.86%83.46%


Al Viro3183.84%156.49%


FUJITA Tomonori2242.70%52.16%


Alan Cox2102.53%20.87%


Andrew Morton1471.77%83.46%


Tejun Heo1071.29%104.33%


Éric Piel1051.27%10.43%


Arnd Bergmann991.19%31.30%


Alexey Dobriyan770.93%20.87%


Linus Torvalds700.84%31.30%


Luca Tettamanti610.74%10.43%


Harvey Harrison450.54%10.43%


Art Haas380.46%10.43%


Roel Kluin140.17%10.43%


Arjan van de Ven130.16%10.43%


Erik Andersen130.16%10.43%


Petr Tesarik120.14%10.43%


David S. Miller110.13%10.43%


Adrian Bunk100.12%10.43%


Kiyoshi Ueda90.11%20.87%


Márton Németh80.10%10.43%


Peter Osterlund80.10%20.87%


Julia Lawall80.10%10.43%


Bodo Eggert80.10%10.43%


Russell King70.08%10.43%


Martin K. Petersen70.08%10.43%


Dan J Williams60.07%10.43%


Jesper Juhl60.07%10.43%


Kay Sievers50.06%10.43%


Rainer Weikusat40.05%10.43%


Paolo Ciarrocchi40.05%10.43%


Laurent Riffard40.05%10.43%


Connor Hansen30.04%10.43%


Frans Pop30.04%10.43%


Ingo Molnar30.04%10.43%


Alexander Beregalov30.04%10.43%


Kees Cook30.04%20.87%


Helge Deller20.02%10.43%


Andreas Schwab20.02%10.43%


Mel Gorman10.01%10.43%


Deepak Saxena10.01%10.43%


Akinobu Mita10.01%10.43%


Total8285100.00%231100.00%


Directory: drivers/ide



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