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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-02-02 01:09:25 +0300
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-02-02 01:09:25 +0300
commit17802998d2c8007d06565c39101d218f579c4454 (patch)
tree7d3c636f124ae4378bea28848a9f7d62af909947 /drivers/ide/ide-cd_ioctl.c
parent139c829d9d83cfd6b51682f11a431283121e24b7 (diff)
downloadlinux-17802998d2c8007d06565c39101d218f579c4454.tar.xz
ide-cd: move code handling cdrom.c IOCTLs to ide-cd_ioctl.c
There should be no functionality changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-cd_ioctl.c')
-rw-r--r--drivers/ide/ide-cd_ioctl.c265
1 files changed, 265 insertions, 0 deletions
diff --git a/drivers/ide/ide-cd_ioctl.c b/drivers/ide/ide-cd_ioctl.c
new file mode 100644
index 000000000000..ec698c44e8bf
--- /dev/null
+++ b/drivers/ide/ide-cd_ioctl.c
@@ -0,0 +1,265 @@
+/*
+ * cdrom.c IOCTLs handling for ide-cd 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>
+ */
+
+#include <linux/kernel.h>
+#include <linux/cdrom.h>
+#include <linux/ide.h>
+
+#include "ide-cd.h"
+
+int ide_cdrom_lock_door(struct cdrom_device_info *cdi, int lock)
+{
+ ide_drive_t *drive = cdi->handle;
+
+ return ide_cd_lockdoor(drive, lock, NULL);
+}
+
+/*
+ * ATAPI devices are free to select the speed you request or any slower
+ * rate. :-( Requesting too fast a speed will _not_ produce an error.
+ */
+int ide_cdrom_select_speed(struct cdrom_device_info *cdi, int speed)
+{
+ ide_drive_t *drive = cdi->handle;
+ struct cdrom_info *cd = drive->driver_data;
+ struct request rq;
+ struct request_sense sense;
+ u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
+ int stat;
+
+ ide_cd_init_rq(drive, &rq);
+
+ rq.sense = &sense;
+
+ if (speed == 0)
+ speed = 0xffff; /* set to max */
+ else
+ speed *= 177; /* Nx to kbytes/s */
+
+ rq.cmd[0] = GPCMD_SET_SPEED;
+ /* Read Drive speed in kbytes/second MSB/LSB */
+ rq.cmd[2] = (speed >> 8) & 0xff;
+ rq.cmd[3] = speed & 0xff;
+ if ((cdi->mask & (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) !=
+ (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) {
+ /* Write Drive speed in kbytes/second MSB/LSB */
+ rq.cmd[4] = (speed >> 8) & 0xff;
+ rq.cmd[5] = speed & 0xff;
+ }
+
+ stat = ide_cd_queue_pc(drive, &rq);
+
+ if (!ide_cdrom_get_capabilities(drive, buf)) {
+ ide_cdrom_update_speed(drive, buf);
+ cdi->speed = cd->current_speed;
+ }
+
+ return 0;
+}
+
+int ide_cdrom_get_last_session(struct cdrom_device_info *cdi,
+ struct cdrom_multisession *ms_info)
+{
+ struct atapi_toc *toc;
+ ide_drive_t *drive = cdi->handle;
+ struct cdrom_info *info = drive->driver_data;
+ struct request_sense sense;
+ int ret;
+
+ if ((info->cd_flags & IDE_CD_FLAG_TOC_VALID) == 0 || !info->toc) {
+ ret = ide_cd_read_toc(drive, &sense);
+ if (ret)
+ return ret;
+ }
+
+ toc = info->toc;
+ ms_info->addr.lba = toc->last_session_lba;
+ ms_info->xa_flag = toc->xa_flag;
+
+ return 0;
+}
+
+int ide_cdrom_get_mcn(struct cdrom_device_info *cdi,
+ struct cdrom_mcn *mcn_info)
+{
+ ide_drive_t *drive = cdi->handle;
+ int stat, mcnlen;
+ struct request rq;
+ char buf[24];
+
+ ide_cd_init_rq(drive, &rq);
+
+ rq.data = buf;
+ rq.data_len = sizeof(buf);
+
+ rq.cmd[0] = GPCMD_READ_SUBCHANNEL;
+ rq.cmd[1] = 2; /* MSF addressing */
+ rq.cmd[2] = 0x40; /* request subQ data */
+ rq.cmd[3] = 2; /* format */
+ rq.cmd[8] = sizeof(buf);
+
+ stat = ide_cd_queue_pc(drive, &rq);
+ if (stat)
+ return stat;
+
+ mcnlen = sizeof(mcn_info->medium_catalog_number) - 1;
+ memcpy(mcn_info->medium_catalog_number, buf + 9, mcnlen);
+ mcn_info->medium_catalog_number[mcnlen] = '\0';
+
+ return 0;
+}
+
+int ide_cdrom_reset(struct cdrom_device_info *cdi)
+{
+ ide_drive_t *drive = cdi->handle;
+ struct cdrom_info *cd = drive->driver_data;
+ struct request_sense sense;
+ struct request req;
+ int ret;
+
+ ide_cd_init_rq(drive, &req);
+ req.cmd_type = REQ_TYPE_SPECIAL;
+ req.cmd_flags = REQ_QUIET;
+ ret = ide_do_drive_cmd(drive, &req, ide_wait);
+
+ /*
+ * A reset will unlock the door. If it was previously locked,
+ * lock it again.
+ */
+ if (cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED)
+ (void)ide_cd_lockdoor(drive, 1, &sense);
+
+ return ret;
+}
+
+static int ide_cd_get_toc_entry(ide_drive_t *drive, int track,
+ struct atapi_toc_entry **ent)
+{
+ struct cdrom_info *info = drive->driver_data;
+ struct atapi_toc *toc = info->toc;
+ int ntracks;
+
+ /*
+ * don't serve cached data, if the toc isn't valid
+ */
+ if ((info->cd_flags & IDE_CD_FLAG_TOC_VALID) == 0)
+ return -EINVAL;
+
+ /* Check validity of requested track number. */
+ ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
+
+ if (toc->hdr.first_track == CDROM_LEADOUT)
+ ntracks = 0;
+
+ if (track == CDROM_LEADOUT)
+ *ent = &toc->ent[ntracks];
+ else if (track < toc->hdr.first_track || track > toc->hdr.last_track)
+ return -EINVAL;
+ else
+ *ent = &toc->ent[track - toc->hdr.first_track];
+
+ return 0;
+}
+
+static int ide_cd_fake_play_trkind(ide_drive_t *drive, void *arg)
+{
+ struct cdrom_ti *ti = arg;
+ struct atapi_toc_entry *first_toc, *last_toc;
+ unsigned long lba_start, lba_end;
+ int stat;
+ struct request rq;
+ struct request_sense sense;
+
+ stat = ide_cd_get_toc_entry(drive, ti->cdti_trk0, &first_toc);
+ if (stat)
+ return stat;
+
+ stat = ide_cd_get_toc_entry(drive, ti->cdti_trk1, &last_toc);
+ if (stat)
+ return stat;
+
+ if (ti->cdti_trk1 != CDROM_LEADOUT)
+ ++last_toc;
+ lba_start = first_toc->addr.lba;
+ lba_end = last_toc->addr.lba;
+
+ if (lba_end <= lba_start)
+ return -EINVAL;
+
+ ide_cd_init_rq(drive, &rq);
+
+ rq.sense = &sense;
+ rq.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
+ lba_to_msf(lba_start, &rq.cmd[3], &rq.cmd[4], &rq.cmd[5]);
+ lba_to_msf(lba_end - 1, &rq.cmd[6], &rq.cmd[7], &rq.cmd[8]);
+
+ return ide_cd_queue_pc(drive, &rq);
+}
+
+static int ide_cd_read_tochdr(ide_drive_t *drive, void *arg)
+{
+ struct cdrom_info *cd = drive->driver_data;
+ struct cdrom_tochdr *tochdr = arg;
+ struct atapi_toc *toc;
+ int stat;
+
+ /* Make sure our saved TOC is valid. */
+ stat = ide_cd_read_toc(drive, NULL);
+ if (stat)
+ return stat;
+
+ toc = cd->toc;
+ tochdr->cdth_trk0 = toc->hdr.first_track;
+ tochdr->cdth_trk1 = toc->hdr.last_track;
+
+ return 0;
+}
+
+static int ide_cd_read_tocentry(ide_drive_t *drive, void *arg)
+{
+ struct cdrom_tocentry *tocentry = arg;
+ struct atapi_toc_entry *toce;
+ int stat;
+
+ stat = ide_cd_get_toc_entry(drive, tocentry->cdte_track, &toce);
+ if (stat)
+ return stat;
+
+ tocentry->cdte_ctrl = toce->control;
+ tocentry->cdte_adr = toce->adr;
+ if (tocentry->cdte_format == CDROM_MSF) {
+ lba_to_msf(toce->addr.lba,
+ &tocentry->cdte_addr.msf.minute,
+ &tocentry->cdte_addr.msf.second,
+ &tocentry->cdte_addr.msf.frame);
+ } else
+ tocentry->cdte_addr.lba = toce->addr.lba;
+
+ return 0;
+}
+
+int ide_cdrom_audio_ioctl(struct cdrom_device_info *cdi,
+ unsigned int cmd, void *arg)
+{
+ ide_drive_t *drive = cdi->handle;
+
+ switch (cmd) {
+ /*
+ * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since
+ * atapi doesn't support it
+ */
+ case CDROMPLAYTRKIND:
+ return ide_cd_fake_play_trkind(drive, arg);
+ case CDROMREADTOCHDR:
+ return ide_cd_read_tochdr(drive, arg);
+ case CDROMREADTOCENTRY:
+ return ide_cd_read_tocentry(drive, arg);
+ default:
+ return -EINVAL;
+ }
+}