| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jens Axboe | 2691 | 32.88% | 20 | 8.33% |
| Bartlomiej Zolnierkiewicz | 2124 | 25.95% | 83 | 34.58% |
| Borislav Petkov | 1147 | 14.02% | 38 | 15.83% |
| Christoph Hellwig | 637 | 7.78% | 11 | 4.58% |
| Al Viro | 303 | 3.70% | 14 | 5.83% |
| FUJITA Tomonori | 218 | 2.66% | 4 | 1.67% |
| Alan Cox | 210 | 2.57% | 2 | 0.83% |
| Andrew Morton | 143 | 1.75% | 8 | 3.33% |
| Tejun Heo | 107 | 1.31% | 10 | 4.17% |
| Arnd Bergmann | 99 | 1.21% | 3 | 1.25% |
| Linus Torvalds | 67 | 0.82% | 3 | 1.25% |
| Luca Tettamanti | 59 | 0.72% | 1 | 0.42% |
| Éric Piel | 53 | 0.65% | 1 | 0.42% |
| Harvey Harrison | 45 | 0.55% | 1 | 0.42% |
| Art Haas | 38 | 0.46% | 1 | 0.42% |
| Kees Cook | 36 | 0.44% | 5 | 2.08% |
| Alexey Dobriyan | 19 | 0.23% | 2 | 0.83% |
| Roel Kluin | 14 | 0.17% | 1 | 0.42% |
| Arjan van de Ven | 13 | 0.16% | 1 | 0.42% |
| Petr Tesarik | 12 | 0.15% | 1 | 0.42% |
| Erik Andersen | 12 | 0.15% | 1 | 0.42% |
| Adrian Bunk | 10 | 0.12% | 1 | 0.42% |
| Kiyoshi Ueda | 9 | 0.11% | 2 | 0.83% |
| David S. Miller | 9 | 0.11% | 1 | 0.42% |
| Bart Van Assche | 9 | 0.11% | 2 | 0.83% |
| Peter Osterlund | 8 | 0.10% | 2 | 0.83% |
| Julia Lawall | 8 | 0.10% | 1 | 0.42% |
| Bodo Eggert | 8 | 0.10% | 1 | 0.42% |
| Márton Németh | 8 | 0.10% | 1 | 0.42% |
| Russell King | 7 | 0.09% | 1 | 0.42% |
| Martin K. Petersen | 7 | 0.09% | 1 | 0.42% |
| Jesper Juhl | 6 | 0.07% | 1 | 0.42% |
| Dan J Williams | 6 | 0.07% | 1 | 0.42% |
| Maurizio Lombardi | 5 | 0.06% | 1 | 0.42% |
| Kay Sievers | 5 | 0.06% | 1 | 0.42% |
| Paolo Ciarrocchi | 4 | 0.05% | 1 | 0.42% |
| Laurent Riffard | 4 | 0.05% | 1 | 0.42% |
| Rainer Weikusat | 4 | 0.05% | 1 | 0.42% |
| Ingo Molnar | 3 | 0.04% | 1 | 0.42% |
| Connor Hansen | 3 | 0.04% | 1 | 0.42% |
| Frans Pop | 3 | 0.04% | 1 | 0.42% |
| Alexander Beregalov | 3 | 0.04% | 1 | 0.42% |
| Hannes Reinecke | 2 | 0.02% | 1 | 0.42% |
| Helge Deller | 2 | 0.02% | 1 | 0.42% |
| Andreas Schwab | 2 | 0.02% | 1 | 0.42% |
| Deepak Saxena | 1 | 0.01% | 1 | 0.42% |
| Akinobu Mita | 1 | 0.01% | 1 | 0.42% |
| Total | 8184 | 240 |
/* * 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; } 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); } /* * 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; } 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; } 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); } 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, BLK_STS_IOERR, blk_rq_bytes(failed))) BUG(); } else cdrom_analyze_sense_data(drive, NULL); } /* * 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; } } /** * 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; } 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; } int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd, int write, void *buffer, unsigned *bufflen, struct scsi_sense_hdr *sshdr, int timeout, req_flags_t rq_flags) { struct cdrom_info *info = drive->driver_data; struct scsi_sense_hdr local_sshdr; 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); if (!sshdr) sshdr = &local_sshdr; /* 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, 0); 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; scsi_normalize_sense(scsi_req(rq)->sense, scsi_req(rq)->sense_len, sshdr); /* * 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). */ if (sshdr->sense_key == UNIT_ATTENTION) cdrom_saw_media_change(drive); else if (sshdr->sense_key == NOT_READY && sshdr->asc == 4 && sshdr->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; } /* * 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, BLK_STS_OK, nr_bytes); return true; } return false; } 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, BLK_STS_OK); 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 ? BLK_STS_OK : BLK_STS_IOERR, blk_rq_bytes(rq)); if (sense && rc == 2) ide_error(drive, "request sense failure", stat); } return ide_stopped; } 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_SHIFT; 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; } 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; } } 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 ? BLK_STS_OK : BLK_STS_IOERR, nsectors << 9); return ide_stopped; } /* * 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); } int cdrom_check_status(ide_drive_t *drive, struct scsi_sense_hdr *sshdr) { struct cdrom_info *info = drive->driver_data; struct cdrom_device_info *cdi; unsigned char cmd[BLK_MAX_CDB]; ide_debug_log(IDE_DBG_FUNC, "enter"); if (!info) return -EIO; cdi = &info->devinfo; 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, sshdr, 0, RQF_QUIET); } static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, unsigned long *sectors_per_frame) { 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, NULL, 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_SHIFT) << SECTOR_SHIFT; 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_SHIFT; ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu", *capacity, *sectors_per_frame); return 0; } static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, int format, char *buf, int buflen) { 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, NULL, 0, RQF_QUIET); } /* Try to read the entire TOC for the disk into our internal buffer. */ int ide_cd_read_toc(ide_drive_t *drive) { 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, NULL); 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, §ors_per_frame); 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_SHIFT); /* 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)); 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)); 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)); 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)); 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)); 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; } 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; } 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); } #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); } 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; } /* 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); q->initialize_rq_fn(rq); 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; } /* * 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; } 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; } 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, §ors_per_frame)) return 0; return capacity * sectors_per_frame; } 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; } static ide_proc_entry_t idecd_proc[] = { { "capacity", S_IFREG|S_IRUGO, idecd_capacity_proc_show }, {} }; static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive) { return idecd_proc; } static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive) { return NULL; } #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; } 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; } 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); } 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); } 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; check_disk_change(bdev); 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; } 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); } 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); } 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; } 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; } 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; } 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); } static int idecd_revalidate_disk(struct gendisk *disk) { struct cdrom_info *info = ide_drv_g(disk, cdrom_info); ide_cd_read_toc(info->drive); return 0; } 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; 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); g->fops = &idecd_ops; g->flags |= GENHD_FL_REMOVABLE | GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE; device_add_disk(&drive->gendev, g, NULL); return 0; out_free_disk: put_disk(g); out_free_cd: kfree(info); failed: return -ENODEV; } static void __exit ide_cdrom_exit(void) { driver_unregister(&ide_cdrom_driver.gen_driver); } static int __init ide_cdrom_init(void) { printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n"); return driver_register(&ide_cdrom_driver.gen_driver); } MODULE_ALIAS("ide:*m-cdrom*"); MODULE_ALIAS("ide-cd"); module_init(ide_cdrom_init); module_exit(ide_cdrom_exit); MODULE_LICENSE("GPL");
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