aurel32 [Sat, 24 Jan 2009 15:07:42 +0000 (15:07 +0000)]
target-ppc: Change core powerpc gdbstub bits to be XML-aware
Define GDB_CORE_XML and hack things similarly to ARM so that despite the
FP registers coming in between the GPRs and some status registers,
everything works out OK no matter which kind of GDB we're communicating
with.
It matters whether we're built to target 64-bit or 32-bit cores. I
think there are still problems if we are debugging 32-bit programs on a
built-for-64-bit QEMU (QEMU will always send 64-bit registers), but I
don't know if there's a good way around that at the time being.
aurel32 [Sat, 24 Jan 2009 15:07:34 +0000 (15:07 +0000)]
target-ppc: Add XML files for PowerPC registers
These files are nearly identical to the XML files provided with GDB.
The only difference is that power-{fpu,spe}.xml do not assign register
numbers; the internal QEMU machinery takes care of that.
Define gdb_xml_files for ppc targets in configure as well.
blueswir1 [Sat, 24 Jan 2009 12:09:52 +0000 (12:09 +0000)]
Floppy: Properly handle Sense Interrupt Status after FDC Reset
Original text below.
Attached is a patch that changes how the emulated floppy controller replies to Sense Interrupt Status commands immediately after a controller reset. The specs state that after a Reset the 82078 goes into polling mode which needs four Sense Interrupt Status commands to be issued afterwards to clear the status of each drive. Currently we always respond to Sense Interrupt Status with a SEEK END instead of POLLING. This causes a problem with the SCO Openserver installer which is expects a POLLING state after reset. This patch returns a POLLING status for four Sense Interrupt Status requests immediately after a controller reset. This approach mirrors the way Bochs handles this situation. With the attached patch applied Openserver gets further when trying to load storage drivers from the floppy disk (blocked by another issue, patch on its way). I have successfully tested the floppy drive on the following OSs after applying this patch: Windows 98, Windows XP SP2, Linux x86 (SysRescCD 1.1.3 and Ubuntu 8.10).
Justin
Changelog:
Properly handle Sense Interrupt Status after FDC Reset
malc [Fri, 23 Jan 2009 19:56:19 +0000 (19:56 +0000)]
fix endianness problem sharing the videoram buffer
[ The following text is in the "UTF-8" character set. ]
[ Your display is set for the "koi8-r" character set. ]
[ Some characters may be displayed incorrectly. ]
This patch fixes vga rendering when the guest endianness differs from
the host endianness: in this case we can only share the buffer if the
bpp is 32 and we must change the pixelformat accordingly.
aliguori [Thu, 22 Jan 2009 18:57:34 +0000 (18:57 +0000)]
qcow2 format: keep 'num_free_bytes', and show it upon 'info blockstats' (Uri Lublin)
'num_free_bytes' is the number of non-allocated bytes below highest-allocation.
It's useful, together with the highest-allocation, to figure out how
fragmented the image is, and how likely it will run out-of-space soon.
For example when the highest allocation is high (almost end-of-disk), but
many bytes (clusters) are free, and can be re-allocated when neeeded, than
we know it's probably not going to reach end-of-disk-space soon.
Added bookkeeping to block-qcow2.c
Export it using BlockDeviceInfo
Show it upon 'info blockstats' if BlockDeviceInfo exists
We want to know the highest written offset for qcow2 images.
This gives a pretty good (and easy to calculate) estimation to how
much more allocation can be done for the block device.
It can be usefull for allocating more diskspace for that image
(if possible, e.g. lvm) before we run out-of-disk-space
aliguori [Thu, 22 Jan 2009 17:15:21 +0000 (17:15 +0000)]
install man-pages as non-executables (Andre Przywara)
make install-doc omits an explicit permission mask for the man-pages. This
defaults to have the executable bits set. Adding "-m 644" (for rw-r--r--)
fixes that.
aliguori [Thu, 22 Jan 2009 16:59:24 +0000 (16:59 +0000)]
Vectored block device API (Avi Kivity)
Most devices that are capable of DMA are also capable of scatter-gather.
With the memory mapping API, this means that the device code needs to be
able to access discontiguous host memory regions.
For block devices, this translates to vectored I/O. This patch implements
an aynchronous vectored interface for the qemu block devices. At the moment
all I/O is bounced and submitted through the non-vectored API; in the future
we will convert block devices to natively support vectored I/O wherever
possible.
aliguori [Thu, 22 Jan 2009 16:59:20 +0000 (16:59 +0000)]
I/O vector helpers (Avi Kivity)
In general, it is not possible to predict the size of of an I/O vector since
a contiguous guest region may map to a disconiguous host region. Add some
helpers to manage I/O vector growth.
aliguori [Thu, 22 Jan 2009 16:59:16 +0000 (16:59 +0000)]
Add map client retry notification (Avi Kivity)
The target memory mapping API may fail if the bounce buffer resources
are exhausted. Add a notification mechanism to allow clients to retry
the mapping operation when resources become available again.
aliguori [Thu, 22 Jan 2009 16:59:11 +0000 (16:59 +0000)]
Add target memory mapping API (Avi Kivity)
Devices accessing large amounts of memory (as with DMA) will wish to obtain
a pointer to guest memory rather than access it indirectly via
cpu_physical_memory_rw(). Add a new API to convert target addresses to
host pointers.
In case the target address does not correspond to RAM, a bounce buffer is
allocated. To prevent the guest from causing the host to allocate unbounded
amounts of bounce buffer, this memory is limited (currently to one page).
aliguori [Wed, 21 Jan 2009 19:18:00 +0000 (19:18 +0000)]
re-fix screendump (Stefano Stabellini)
Removing the assumption about a single graphic console made
get_graphic_console return NULL when called by vga_screen_dump.
In this case returning NULL is correct but since NULL is not handled in
qemu_console_resize it causes a segmentation fault.
Just returning immediately from qemu_console_resize is sufficient to fix the
problem.
aliguori [Wed, 21 Jan 2009 18:59:12 +0000 (18:59 +0000)]
fix curses interface (Stefano Stabellini)
Hi all,
this patch fixes the curses interface: when we switch from one console
to another we need to change the displaystate width and height even
though in the curses case the backing buffer remains of the same size.
I am also putting back the call to text_console_resize in
text_console_invalidate so that resizeable text consoles can be properly
handled.
aliguori [Wed, 21 Jan 2009 18:59:04 +0000 (18:59 +0000)]
Stop VM on ENOSPC error. (Gleb Natapov)
This version of the patch adds new option "werror" to -drive flag.
Possible values are:
report - report errors to a guest as IO errors
ignore - continue as if nothing happened
stop - stop VM on any error and retry last command on resume
enospc - stop vm on ENOSPC error and retry last command on resume
all other errors are reported to a guest.
Default is "report" to maintain current behaviour.
aliguori [Wed, 21 Jan 2009 18:58:51 +0000 (18:58 +0000)]
Adds null check for DisplayStatus (Stefano Stabellini)
Allocate a DisplaySurface in dumb_display_init if none else does it.
The DisplaySurface will be used for the qemu monitor, serial and
parallel ports, etc.
aliguori [Wed, 21 Jan 2009 18:31:35 +0000 (18:31 +0000)]
cirrus: cleanup reset handler (Jan Kiszka)
We should not re-register the cirrus io-memory regions on each reset.
Moreover, this patch removes some dead code and pushes other static
field initializations from reset to init_common.
aliguori [Wed, 21 Jan 2009 18:31:16 +0000 (18:31 +0000)]
cirrus: stop dirty logging during remaps (Jan Kiszka)
Cleaned-up port from kvm-userspace: We have to stop any vram logging
while doing remaps. Otherwise the logger gets confused. This reward is
enormously accelerated cirrus vga in kvm mode.
aliguori [Wed, 21 Jan 2009 18:13:09 +0000 (18:13 +0000)]
Make make output quieter (Avi Kivity)
Spew out less noise when compiling. This helps review make output for
information such as compilation warnings, rather than extra long compiler
invocations.
The full output can be generated by supplying a 'V=1' parameter to make.
aliguori [Mon, 19 Jan 2009 16:34:10 +0000 (16:34 +0000)]
Remove dumb_display (Stefan Stabellini)
However I think the following fix is cleaner: we do not need a
dumb_display_init that creates an empty DisplayChangeListener any more.
We do need a dumb_display_init that allocates a zeroed DisplayState
structure if none else does it.
blueswir1 [Sat, 17 Jan 2009 20:47:10 +0000 (20:47 +0000)]
Remove unused info_str parameter to pcnet_common_init()
I noticed that pcnet_common_init() takes an unused 'info_str'
parameter, added in r2142. Since then, we always pass "pcnet"
to register_savevm() (and never "lance").
Note that r6218 changed vc->info_str to "lance" for sun4m emulation.
On the assumption that it's not needed, this patch removes the
parameter. If reverting the change in r2142, and registering with
"lance" would be preferable, I can submit a patch to do so.
malc [Fri, 16 Jan 2009 22:32:33 +0000 (22:32 +0000)]
Avoid calling qemu_mallocz with zero size
Currently qemu_mallocz calls malloc and handling of zero by malloc is
implementation defined behaviour:
http://www.opengroup.org/onlinepubs/7990989775/xsh/malloc.html
malloc(0) on AIX returns NULL[1] and qcow2 images without snapshots
are thus unusable
[1] Unless special Linux compatibility define is used when compiling
aurel32 [Fri, 16 Jan 2009 21:38:58 +0000 (21:38 +0000)]
hpet config mask fix
I discovered a bug in the hpet code that caused Windows to boot without
hpet. The config mask I was using was preventing the guest from placing
the hpet into 32 bit mode.
aurel32 [Fri, 16 Jan 2009 21:13:58 +0000 (21:13 +0000)]
G364 video adapter enhancement
This patch improves G364 video card emulation (used in MIPS Magnum machine):
- Use memory dirty tracking to not refresh whole screen each time
- Use macros for debugging messages
- Add support for hardware cursor
- Handle Y-panning
- Raise irq at each screen redraw
- Support retrieving of some registers
- Add load/save support
The emulation has been tested in Linux 2.1 and Windows NT 3.5, in
640x480, 800x600, 1024x768 and 1280x1024 resolutions.
aliguori [Fri, 16 Jan 2009 20:23:27 +0000 (20:23 +0000)]
Fix character devices after DisplayState refactoring
The DisplayState refactoring changed the machine init function to create a
DisplayState for each VGA device instead of being passed an existing
DisplayState. This change is critical to enable multiple graphics device
support.
Unfortunately, the serial/parallel/console code is structured today to run
before machine init to fill out the CharDriverState table which the machine
init function uses to determine whether to create the required devices.
Since a 'vc' is a type of CharDriverState, the CharDriverState code requires
that a DisplayState exist before it runs creating a circular dependency.
To fix this, this splits the creation of the initial CharDriverState from
the initialization of the text console. We can then in a second step associate
a DisplayState with all TextConsoles. This allows us to create the
CharDriverState's first, machine init, then associate the TextConsoles with
a DisplayState.
aliguori [Fri, 16 Jan 2009 19:07:10 +0000 (19:07 +0000)]
fix screendump (Stefano Stabellini)
this patch fixes the screendump functionality that was recently broken;
it must be applied *after* PATCH 5, 6 and 7 of the original displaystate
change patch series.
In fact the other patches make much easier to solve the screendump
problem because they make the console switching mechanism more robust.
This patch changes the graphical_console_init function to return an
allocated DisplayState instead of a QEMUConsole.
This patch contains just the graphical_console_init change and few other
modifications mainly in console.c and vl.c.
It was necessary to move the display frontends (e.g. sdl and vnc)
initialization after machine->init in vl.c.
This patch does *not* include any required changes to any device, these
changes come with the following patches.
Patch 6/7
This patch changes the QEMUMachine init functions not to take a
DisplayState as an argument because is not needed any more;
In few places the graphic hardware initialization function was called
only if DisplayState was not NULL, now they are always called.
Apart from these cases, the rest are all mechanical substitutions.
Patch 7/7
This patch updates the graphic device code to use the new
graphical_console_init function.
As for the previous patch, in few places graphical_console_init was called
only if DisplayState was not NULL, now it is always called.
Apart from these cases, the rest are all mechanical substitutions.
This patch changes the DisplayState interface adding support for
multiple frontends at the same time (sdl and vnc) and implements most
of the benefit of the shared_buf patch without the added complexity.
Currently DisplayState is managed by sdl (or vnc) and sdl (or vnc) is
also responsible for allocating the data and setting the depth.
Vga.c (or another backend) will do any necessary conversion.
The idea is to change it so that is vga.c (or another backend) together
with console.c that fully manage the DisplayState interface allocating
data and setting the depth (either 16 or 32 bit, if the guest uses a
different resolution or is in text mode, vga.c (or another backend) is
in charge of doing the conversion seamlessly).
The other idea is that DisplayState supports *multiple* frontends
like sdl and vnc; each of them can register some callbacks to be called
when a display event occurs.
The interesting changes are:
- the new structures and related functions in console.h and console.c
in particular the following functions are very helpful to manage a
DisplaySurface:
aliguori [Thu, 15 Jan 2009 22:07:16 +0000 (22:07 +0000)]
remove bgr (Stefano Stabellini)
Do not handle bgr host displays in the backends.
Right now a bgr flag exists so that sdl can set it, if the SDL_Surface
is bgr.
Afterwards the graphic device (e.g. vga.c) does the needed conversion.
With this patch series is sdl that is responsible for rendering the format
provided by the graphic device that must provide a DisplaySurface
(ds->surface) in 16 or 32 bpp, rgb.
Afterwards sdl creates a SDL_Surface from the given DisplaySurface and
blits it into the main SDL_Surface using SDL_BlitSurface.
Everything is handled by sdl transparently, because SDL_BlitSurface is
perfectly capable of handling bgr displays by itself.
aliguori [Thu, 15 Jan 2009 21:57:30 +0000 (21:57 +0000)]
report issues causing the kvm probe to fail (Christian Ehrhardt)
The patch applies to upstream qemu as well as kvm-userspace, but since it is
the qemu configure script I think it should go to upstream qemu (Anthony)
first and with the next merge to kvm-userspace. On the other hand it is the kvm
probe so an ack from Avi in case v3 is ok would be reasonable.
*updates*
v2 - it also reports other errors than just #error preprocessor statements
(requested by Avi)
v3 - In case awk or grep is not installed it now gracfully (silently)
fails still disabling kvm (requested by Anthony)
This patch is about reporting more details of the issue if configuring kvm
fails. Therefore this patch keeps the qemu style configure output which is a
list of "$Feature $Status", but extend the "no" result like "KVM Support no"
with some more information.
There might be a lot of things going wrong with that probe and I don't want
to handle all of them, but if it is one of the known checks e.g. for
KVM_API_VERSION then we could grep/awk that out and report it. The patch
reports in case of a known case in the style
"KVM support no - (Missing KVM capability KVM_CAP_DESTROY_MEMORY_REGION_WORKS)"
In case more than one #error is triggered it creates a comma separated list in
those brackets and in case it is something else than an #error it just reports
plain old "no".
aliguori [Thu, 15 Jan 2009 21:52:11 +0000 (21:52 +0000)]
Define macros that will become the new logging API (Eduardo Habkost)
These macros are NOT a proposal for a definitive new logging API. They
are just a step for it: a way to mark all usage patterns of the
logfile/loglevel variables on a single place.
aliguori [Thu, 15 Jan 2009 21:48:06 +0000 (21:48 +0000)]
Clean up debugging code #ifdefs (Eduardo Habkost)
Use macros to avoid #ifdefs on debugging code.
This patch doesn't try to merge logging macros from different files,
but just unify the debugging code #ifdefs onto a macro on each file. A
further cleanup can unify the debugging macros on a common header, later
aliguori [Thu, 15 Jan 2009 21:39:41 +0000 (21:39 +0000)]
Fix Windows build (Hervé Poussineau)
r6303 broke Windows build, where "noreturn" is a keyword used with __declspec.
Attached patch fixes Windows build, by moving windows.h header inclusion before Qemu noreturn define.
aliguori [Thu, 15 Jan 2009 20:47:45 +0000 (20:47 +0000)]
Handle SDL grabs failing (Mark McLoughlin)
If a X window is not viewable, XGrabPointer() fails and
returns GrabNotViewable. SDL's X backend currently handles
this by retrying the grab until the window becomes viewable
again.
This means e.g. if you Ctrl-Alt-RightArrow to switch
workspaces, QEMU tries to grab, SDL blocks because the
window isn't viewable and your guest stops executing until
you switch back to that workspace again.
See this Fedora bug for the gory details:
https://bugzilla.redhat.com/480065
Some SDL backends will return SDL_GRAB_OFF from
SDL_WM_GrabInput(), so the fix is to make the X backend do
this if the grab fails.
The only side-effect in QEMU is that if SDL_WM_GrabInput()
fails we still change the window title to indicate that it's
grabbed, when in fact it's not. This patch fixes that minor
issue.
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