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>

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;
+        }
+}