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| author | Paolo Bonzini <pbonzini@redhat.com> | 2012-05-25 12:59:31 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2012-07-02 10:18:41 +0200 |
| commit | 55042b955b56e633120027ad0cdc6c059ab9954d (patch) | |
| tree | b88c5c4735f12849fc07ab2d3c2d923c253fda55 | |
| parent | 27395add759ff4caeb04a97c1bb0e8bdd7db12fb (diff) | |
| download | qemu-55042b955b56e633120027ad0cdc6c059ab9954d.tar.gz | |
atapi: implement READ DISC INFORMATION
This command is not necessary for CD-ROM and DVD-ROM, but some versions of
udev trip on its absence.
Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | hw/ide/atapi.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/hw/ide/atapi.c b/hw/ide/atapi.c index 5919cf52d8..f7f714c726 100644 --- a/hw/ide/atapi.c +++ b/hw/ide/atapi.c @@ -956,6 +956,36 @@ static void cmd_read_cdvd_capacity(IDEState *s, uint8_t* buf) ide_atapi_cmd_reply(s, 8, 8); } +static void cmd_read_disc_information(IDEState *s, uint8_t* buf) +{ + uint8_t type = buf[1] & 7; + uint32_t max_len = ube16_to_cpu(buf + 7); + + /* Types 1/2 are only defined for Blu-Ray. */ + if (type != 0) { + ide_atapi_cmd_error(s, ILLEGAL_REQUEST, + ASC_INV_FIELD_IN_CMD_PACKET); + return; + } + + memset(buf, 0, 34); + buf[1] = 32; + buf[2] = 0xe; /* last session complete, disc finalized */ + buf[3] = 1; /* first track on disc */ + buf[4] = 1; /* # of sessions */ + buf[5] = 1; /* first track of last session */ + buf[6] = 1; /* last track of last session */ + buf[7] = 0x20; /* unrestricted use */ + buf[8] = 0x00; /* CD-ROM or DVD-ROM */ + /* 9-10-11: most significant byte corresponding bytes 4-5-6 */ + /* 12-23: not meaningful for CD-ROM or DVD-ROM */ + /* 24-31: disc bar code */ + /* 32: disc application code */ + /* 33: number of OPC tables */ + + ide_atapi_cmd_reply(s, 34, max_len); +} + static void cmd_read_dvd_structure(IDEState *s, uint8_t* buf) { int max_len; @@ -1045,6 +1075,7 @@ static const struct { [ 0x43 ] = { cmd_read_toc_pma_atip, CHECK_READY }, [ 0x46 ] = { cmd_get_configuration, ALLOW_UA }, [ 0x4a ] = { cmd_get_event_status_notification, ALLOW_UA }, + [ 0x51 ] = { cmd_read_disc_information, CHECK_READY }, [ 0x5a ] = { cmd_mode_sense, /* (10) */ 0 }, [ 0xa8 ] = { cmd_read, /* (12) */ CHECK_READY }, [ 0xad ] = { cmd_read_dvd_structure, CHECK_READY }, |