* [Bug 1863441] [NEW] cmd_mode_sense always reports 0x70, no CDROM present
@ 2020-02-15 20:48 Benjamin David Lunt
2020-04-06 19:21 ` [Bug 1863441] " John Snow
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: Benjamin David Lunt @ 2020-02-15 20:48 UTC (permalink / raw)
To: qemu-devel
Public bug reported:
cmd_mode_sense
https://git.qemu.org/?p=qemu.git;a=blob;f=hw/ide/atapi.c;hb=refs/heads/master#l852
always reports 0x70 in byte 2 returned, indicating no CD-ROM present.
If CD-ROM is present, should report 0x01 (or 0x11).
If CD-ROM absent, should report 0x70.
** Affects: qemu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1863441
Title:
cmd_mode_sense always reports 0x70, no CDROM present
Status in QEMU:
New
Bug description:
cmd_mode_sense
https://git.qemu.org/?p=qemu.git;a=blob;f=hw/ide/atapi.c;hb=refs/heads/master#l852
always reports 0x70 in byte 2 returned, indicating no CD-ROM present.
If CD-ROM is present, should report 0x01 (or 0x11).
If CD-ROM absent, should report 0x70.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1863441/+subscriptions
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug 1863441] Re: cmd_mode_sense always reports 0x70, no CDROM present
2020-02-15 20:48 [Bug 1863441] [NEW] cmd_mode_sense always reports 0x70, no CDROM present Benjamin David Lunt
@ 2020-04-06 19:21 ` John Snow
2020-04-07 2:01 ` Benjamin David Lunt
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: John Snow @ 2020-04-06 19:21 UTC (permalink / raw)
To: qemu-devel
Hi, if you can quote the relevant spec, would you like to include that
in a commit message and send a patch?
Also, does this result in a bug anywhere visible that we can test
against?
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https://bugs.launchpad.net/bugs/1863441
Title:
cmd_mode_sense always reports 0x70, no CDROM present
Status in QEMU:
New
Bug description:
cmd_mode_sense
https://git.qemu.org/?p=qemu.git;a=blob;f=hw/ide/atapi.c;hb=refs/heads/master#l852
always reports 0x70 in byte 2 returned, indicating no CD-ROM present.
If CD-ROM is present, should report 0x01 (or 0x11).
If CD-ROM absent, should report 0x70.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1863441/+subscriptions
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug 1863441] Re: cmd_mode_sense always reports 0x70, no CDROM present
2020-02-15 20:48 [Bug 1863441] [NEW] cmd_mode_sense always reports 0x70, no CDROM present Benjamin David Lunt
2020-04-06 19:21 ` [Bug 1863441] " John Snow
@ 2020-04-07 2:01 ` Benjamin David Lunt
2020-04-10 2:56 ` John Snow
2020-04-11 12:18 ` Thomas Huth
3 siblings, 0 replies; 5+ messages in thread
From: Benjamin David Lunt @ 2020-04-07 2:01 UTC (permalink / raw)
To: qemu-devel
Since I posted this bug report, I have done a little more research and
this specific part of this command is actually quite obsolete. It use
to be documented (MMC v1.2 Draft), but later versions have actually
removed this part of the command, even stating "obsolete" in some of the
documentation.
If you want to still allow it, it actually does state 0x70 is an empty
drive. However, being it is so obsolete, you may wish to change this
status to closed.
Thanks for asking. I don't mind if you close this bug report.
Ben
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You received this bug notification because you are a member of qemu-
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https://bugs.launchpad.net/bugs/1863441
Title:
cmd_mode_sense always reports 0x70, no CDROM present
Status in QEMU:
New
Bug description:
cmd_mode_sense
https://git.qemu.org/?p=qemu.git;a=blob;f=hw/ide/atapi.c;hb=refs/heads/master#l852
always reports 0x70 in byte 2 returned, indicating no CD-ROM present.
If CD-ROM is present, should report 0x01 (or 0x11).
If CD-ROM absent, should report 0x70.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1863441/+subscriptions
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug 1863441] Re: cmd_mode_sense always reports 0x70, no CDROM present
2020-02-15 20:48 [Bug 1863441] [NEW] cmd_mode_sense always reports 0x70, no CDROM present Benjamin David Lunt
2020-04-06 19:21 ` [Bug 1863441] " John Snow
2020-04-07 2:01 ` Benjamin David Lunt
@ 2020-04-10 2:56 ` John Snow
2020-04-11 12:18 ` Thomas Huth
3 siblings, 0 replies; 5+ messages in thread
From: John Snow @ 2020-04-10 2:56 UTC (permalink / raw)
To: qemu-devel
Roger that, thanks!
I don't think we're very careful about which version we try to emulate.
In practice it's "Whatever seems to work across the largest swatch of
guest operating systems simultaneously".
If this comes up again, feel free to file against a specific guest OS
that appears to be non-functioning.
Thanks!
--js
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You received this bug notification because you are a member of qemu-
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https://bugs.launchpad.net/bugs/1863441
Title:
cmd_mode_sense always reports 0x70, no CDROM present
Status in QEMU:
New
Bug description:
cmd_mode_sense
https://git.qemu.org/?p=qemu.git;a=blob;f=hw/ide/atapi.c;hb=refs/heads/master#l852
always reports 0x70 in byte 2 returned, indicating no CD-ROM present.
If CD-ROM is present, should report 0x01 (or 0x11).
If CD-ROM absent, should report 0x70.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1863441/+subscriptions
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug 1863441] Re: cmd_mode_sense always reports 0x70, no CDROM present
2020-02-15 20:48 [Bug 1863441] [NEW] cmd_mode_sense always reports 0x70, no CDROM present Benjamin David Lunt
` (2 preceding siblings ...)
2020-04-10 2:56 ` John Snow
@ 2020-04-11 12:18 ` Thomas Huth
3 siblings, 0 replies; 5+ messages in thread
From: Thomas Huth @ 2020-04-11 12:18 UTC (permalink / raw)
To: qemu-devel
** Changed in: qemu
Status: New => Won't Fix
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You received this bug notification because you are a member of qemu-
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https://bugs.launchpad.net/bugs/1863441
Title:
cmd_mode_sense always reports 0x70, no CDROM present
Status in QEMU:
Won't Fix
Bug description:
cmd_mode_sense
https://git.qemu.org/?p=qemu.git;a=blob;f=hw/ide/atapi.c;hb=refs/heads/master#l852
always reports 0x70 in byte 2 returned, indicating no CD-ROM present.
If CD-ROM is present, should report 0x01 (or 0x11).
If CD-ROM absent, should report 0x70.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1863441/+subscriptions
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2020-04-11 12:26 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-02-15 20:48 [Bug 1863441] [NEW] cmd_mode_sense always reports 0x70, no CDROM present Benjamin David Lunt
2020-04-06 19:21 ` [Bug 1863441] " John Snow
2020-04-07 2:01 ` Benjamin David Lunt
2020-04-10 2:56 ` John Snow
2020-04-11 12:18 ` Thomas Huth
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