[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH 3/4] atapi: implement READ DISC INFORMATION
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 3/4] atapi: implement READ DISC INFORMATION |
Date: |
Mon, 11 Jun 2012 07:24:05 +0200 |
This command is not necessary for CD-ROM and DVD-ROM, but some versions of
udev trip on its absence.
Cc: Kevin Wolf <address@hidden>
Cc: Markus Armbruster <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
Kevin, ok to merge these ATAPI changes via the SCSI tree?
hw/ide/atapi.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/hw/ide/atapi.c b/hw/ide/atapi.c
index 5919cf5..7510886 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;
@@ -1048,6 +1078,7 @@ static const struct {
[ 0x5a ] = { cmd_mode_sense, /* (10) */ 0 },
[ 0xa8 ] = { cmd_read, /* (12) */ CHECK_READY },
[ 0xad ] = { cmd_read_dvd_structure, CHECK_READY },
+ [ 0x51 ] = { cmd_read_disc_information, CHECK_READY },
[ 0xbb ] = { cmd_set_speed, 0 },
[ 0xbd ] = { cmd_mechanism_status, 0 },
[ 0xbe ] = { cmd_read_cd, CHECK_READY },
--
1.7.10.1