diff options
Diffstat (limited to 'sys/i386/isa/mcd.c')
| -rw-r--r-- | sys/i386/isa/mcd.c | 54 |
1 files changed, 53 insertions, 1 deletions
diff --git a/sys/i386/isa/mcd.c b/sys/i386/isa/mcd.c index 6a7adb3..f7eecb8 100644 --- a/sys/i386/isa/mcd.c +++ b/sys/i386/isa/mcd.c @@ -40,7 +40,7 @@ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * - * $Id: mcd.c,v 1.87 1997/03/24 11:23:55 bde Exp $ + * $Id: mcd.c,v 1.88 1997/04/20 17:26:54 bde Exp $ */ static const char COPYRIGHT[] = "mcd-driver (C)1993 by H.Veit & B.Moore"; @@ -195,6 +195,7 @@ static int mcd_subchan(int unit, struct ioc_read_subchannel *sc); static int mcd_toc_header(int unit, struct ioc_toc_header *th); static int mcd_read_toc(int unit); static int mcd_toc_entrys(int unit, struct ioc_read_toc_entry *te); +static int mcd_toc_entry(int unit, struct ioc_read_toc_single_entry *te); static int mcd_stop(int unit); static int mcd_eject(int unit); static int mcd_inject(int unit); @@ -1427,6 +1428,57 @@ mcd_read_toc(int unit) } static int +mcd_toc_entry(int unit, struct ioc_read_toc_single_entry *te) +{ + struct mcd_data *cd = mcd_data + unit; + struct ioc_toc_header th; + int rc, trk; + + if (te->address_format != CD_MSF_FORMAT + && te->address_format != CD_LBA_FORMAT) + return EINVAL; + + /* Copy the toc header */ + if ((rc = mcd_toc_header(unit, &th)) != 0) + return rc; + + /* verify starting track */ + trk = te->track; + if (trk == 0) + trk = th.starting_track; + else if (trk == MCD_LASTPLUS1) + trk = th.ending_track + 1; + else if (trk < th.starting_track || trk > th.ending_track + 1) + return EINVAL; + + /* Make sure we have a valid toc */ + if ((rc=mcd_read_toc(unit)) != 0) + return rc; + + /* Copy the TOC data. */ + if (cd->toc[trk].idx_no == 0) + return EIO; + + te->entry.control = cd->toc[trk].control; + te->entry.addr_type = cd->toc[trk].addr_type; + te->entry.track = + cd->toc[trk].idx_no > 0x99 ? cd->toc[trk].idx_no : + bcd2bin(cd->toc[trk].idx_no); + switch (te->address_format) { + case CD_MSF_FORMAT: + te->entry.addr.msf.unused = 0; + te->entry.addr.msf.minute = bcd2bin(cd->toc[trk].hd_pos_msf[0]); + te->entry.addr.msf.second = bcd2bin(cd->toc[trk].hd_pos_msf[1]); + te->entry.addr.msf.frame = bcd2bin(cd->toc[trk].hd_pos_msf[2]); + break; + case CD_LBA_FORMAT: + te->entry.addr.lba = htonl(msf2hsg(cd->toc[trk].hd_pos_msf, 0)); + break; + } + return 0; +} + +static int mcd_toc_entrys(int unit, struct ioc_read_toc_entry *te) { struct mcd_data *cd = mcd_data + unit; |
