Stefan Weil [Sat, 7 May 2011 20:10:53 +0000 (22:10 +0200)]
usb-linux: Add missing break statement
cppcheck report:
usb-linux.c:661: warning: Redundant assignment of "len" in switch
Cc: Hans de Goede <hdegoede@redhat.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Gerd Hoffmann [Mon, 9 May 2011 07:44:03 +0000 (09:44 +0200)]
usb-musb: uninline functions
Prototype without "inline" keyword breaks the build with some gcc
versions. Noticed by Alexander Graf.
Fix this by removing the inline keywork everywhere. Some functions
can't be inlined anyway as the are referenced using function pointers.
Beside that gcc does a pretty good job on auto-inlining these days.
This mask contains all of the bits that should be ignored while single
stepping in the debugger. The mask contains 2 bits that are not currently
cleared, but are also never set. The bits are included in the mask for
consistency in handling of the CPU_INTERRUPT_TGT_EXT_N bits.
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
These defines will be place-holders for cpu-specific functionality.
Generic code will, at the end of the patch series, no longer have to
concern itself about how SMI, NMI, etc should be handled. Instead,
generic code will know only that the interrupt is internal or external.
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Hannes Reinecke [Mon, 2 May 2011 07:54:05 +0000 (09:54 +0200)]
lsi53c895a: Rename 'sense' to 'status'
The 'sense' field in the HBA status structure is misnamed, as it
actually carries the SCSI status. Rename it.
Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Cc: qemu-trivial@nongnu.org Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Stefan Weil [Sun, 8 May 2011 06:58:11 +0000 (08:58 +0200)]
ac97: Remove unused local variables
cppcheck report:
hw/ac97.c:1004: style:
Variable 'written' is assigned a value that is never used
hw/ac97.c:1072: style:
Variable 'written' is assigned a value that is never used
Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
John Baboval [Tue, 22 Mar 2011 14:52:09 +0000 (14:52 +0000)]
pci: Use of qemu_put_ram_ptr in pci_add_option_rom.
Prevent a deadlock caused by leaving a map cache bucket locked by the
preceding qemu_get_ram_ptr() call.
Signed-off-By: John Baboval <john.baboval@virtualcomputer.com> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Anthony PERARD [Thu, 16 Sep 2010 12:57:49 +0000 (13:57 +0100)]
Introduce qemu_put_ram_ptr
This function allows to unlock a ram_ptr give by qemu_get_ram_ptr. After
a call to qemu_put_ram_ptr, the pointer may be unmap from QEMU when
used with Xen.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
John Baboval [Tue, 22 Mar 2011 14:50:28 +0000 (14:50 +0000)]
xen: Adds a cap to the number of map cache entries.
Adds a cap to the number of map cache entries. This prevents the map
cache from overwhelming system memory.
I also removed the bitmap macros and #included bitmap.h instead.
Signed-off-By: John Baboval <john.baboval@virtualcomputer.com> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Jun Nakajima [Tue, 31 Aug 2010 15:41:25 +0000 (16:41 +0100)]
xen: Introduce the Xen mapcache
On IA32 host or IA32 PAE host, at present, generally, we can't create
an HVM guest with more than 2G memory, because generally it's almost
impossible for Qemu to find a large enough and consecutive virtual
address space to map an HVM guest's whole physical address space.
The attached patch fixes this issue using dynamic mapping based on
little blocks of memory.
Each call to qemu_get_ram_ptr makes a call to qemu_map_cache with the
lock option, so mapcache will not unmap these ram_ptr.
Blocks that do not belong to the RAM, but usually to a device ROM or to
a framebuffer, are handled in a separate function. So the whole RAMBlock
can be map.
Signed-off-by: Jun Nakajima <jun.nakajima@intel.com> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Anthony PERARD [Mon, 11 Apr 2011 18:48:11 +0000 (19:48 +0100)]
pc_memory_init: Move memory calculation to the caller.
This patch moves above_4g_mem_size and below_4g_mem_size calculation in
the caller of pc_memory_init (pc_init1). And the prototype of
pc_memory_init is changed because there is no need anymore to have
variable pointer and the ram_size parameter.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Anthony PERARD [Fri, 25 Feb 2011 16:20:34 +0000 (16:20 +0000)]
xen: Support new libxc calls from xen unstable.
This patch updates the libxenctrl calls in Qemu to use the new interface,
otherwise Qemu wouldn't be able to build against new versions of the
library.
We check libxenctrl version in configure, from Xen 3.3.0 to Xen
unstable.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
Anthony PERARD [Mon, 22 Nov 2010 15:44:15 +0000 (15:44 +0000)]
machine, Add default_machine_opts to QEMUMachine.
With this new field, we can specified which accelerator use to run the
machine, if the accelerator is not already specified by either a
configuration file or the command line options.
Currently, the only use will be made in the xenfv machine.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Anthony PERARD [Tue, 21 Sep 2010 19:05:31 +0000 (20:05 +0100)]
Introduce -machine command option.
This option gives the ability to switch one "accelerator" like kvm, xen
or the default one tcg. We can specify more than one accelerator by
separate them by a colon. QEMU will try each one and use the first whose
works.
So,
./qemu -machine accel=xen:kvm:tcg
which would try Xen support first, then KVM and finally TCG if none of
the other works.
By default, QEMU will use TCG. But we can specify another default in the
global configuration file.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Alex Williamson [Tue, 3 May 2011 18:36:46 +0000 (12:36 -0600)]
CPUPhysMemoryClient: Pass guest physical address not region offset
When we're trying to get a newly registered phys memory client updated
with the current page mappings, we end up passing the region offset
(a ram_addr_t) as the start address rather than the actual guest
physical memory address (target_phys_addr_t). If your guest has less
than 3.5G of memory, these are coincidentally the same thing. If
there's more, the region offset for the memory above 4G starts over
at 0, so the set_memory client will overwrite it's lower memory entries.
Instead, keep track of the guest phsyical address as we're walking the
tables and pass that to the set_memory client.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Alex Williamson [Tue, 3 May 2011 18:36:32 +0000 (12:36 -0600)]
CPUPhysMemoryClient: Fix typo in phys memory client registration
When we register a physical memory client, we try to walk the page
tables, calling the set_memory hook for every entry. Effectively
playing catchup for the client for everything already registered.
With this type, we only walk the 2nd entry of the l1 table,
typically missing all of the registered memory.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Stefan Weil [Sat, 30 Apr 2011 20:40:07 +0000 (22:40 +0200)]
eepro100: Pad received short frames
QEMU sends frames smaller than 60 bytes to ethernet nics.
Such frames are rejected by real NICs and their emulations.
To avoid this behaviour, other NIC emulations pad received
frames. This patch enables this workaround for eepro100, too.
All related code is marked with CONFIG_PAD_RECEIVED_FRAMES,
so we can drop this in case QEMU's networking code is
ever changed.
Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Stefan Weil [Sat, 30 Apr 2011 20:40:04 +0000 (22:40 +0200)]
eepro100: Avoid duplicate debug messages
When DEBUG_EEPRO100 was enabled, unsupported writes were logged twice.
Now logging in eepro100_write1 and eepro100_write2 is similar to the
logging in eepro100_write4 (which already was correct).
Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Gerd Hoffmann [Wed, 4 May 2011 14:49:56 +0000 (16:49 +0200)]
usb: mass storage fix
Initialize scsi_len with zero when starting a new request, so any
stuff leftover from the previous request is cleared out. This may
happen in case the data returned by the scsi command doesn't fit
into the buffer provided by the guest.
Hans de Goede [Wed, 2 Feb 2011 16:46:00 +0000 (17:46 +0100)]
usb: control buffer fixes
Windows allows control transfers to pass up to 4k of data, so raise our
control buffer size to 4k. For control out transfers the usb core code copies
the control request data to a buffer before calling the device's handle_control
callback. Add a check for overflowing the buffer before copying the data.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Hans de Goede [Fri, 26 Nov 2010 14:02:16 +0000 (15:02 +0100)]
usb-linux: We only need to keep track of 15 endpoints
Currently we reserve room for endpoint data for 16 endpoints, but given
that we only use endpoint data for endpoints 1-15, and always index the
array with the endpoint-number - 1, 15 is enough.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Hans de Goede [Fri, 26 Nov 2010 13:59:35 +0000 (14:59 +0100)]
usb-linux: Refuse iso packets when max packet size is 0 (alt setting 0)
Refuse iso usb packets when then max packet size for the endpoint is 0,
this avoids an abort in usb_host_alloc_iso() caused by trying to qemu_malloc
a 0 bytes large buffer.
Hans de Goede [Fri, 26 Nov 2010 10:41:08 +0000 (11:41 +0100)]
usb-linux: Add support for buffering iso usb packets
Currently we are submitting iso packets to the host one at a time, as we
receive them from the emulated host controller. This has 2 problems:
1) If we were fast enough to submit every packet in time for the next host host
controller usb frame, we would be generating 1000 hardware interrupts per
second on the host
2) We are not fast enough to submit every packet in time for the next host host
controller usb frame, causing us to not submit iso urbs in some usb frames
which causes devices with an endpoint with an interval of 1 ms (so every
frame) to loose data. This causes for example ubs-1.1 webcams to not work
properly (usb-2.0 is not supported at all atm).
This patch fixes both problems by changing the iso packet pass through handling
to buffer packets. This version only does so for iso input packets (webcams,
audio in) I'm working on a second patch extending this to iso output packets
(audio out).
This patch makes use of the linux batching of iso packets in one urb.
When an iso in packet gets received from the emulated host controller,
it immediately submits 3 urbs with 32 iso in packets each. This causes
the host to only get an hw interrupt every 32 packets dropping the
interrupt rate to 32 interrupts per second and gives it a queue of urbs
to work from once the first 32 iso in packets have been received to make sure
no packets are dropped.
Besides submitting a whole bunch or urbs as soon as the first urb is
received, effectively creating a buffer inside the kernel, this patch also
gets rid of the asynchroneous completion for iso in urbs. Instead they are
only marked as complete in the fd write callback (which usbfs uses to signal
complete urbs). These complete packets then get consumed by returning them
synchroneously to the emulated host controller when it submits an iso in
packet for the ep in question. When no complete packets are ready (which
happens when the stream is starting) a 0 length packet gets returned to
the emulated host controller.
With this patch I've several usb-1.1 webcams working well with usb pass
through, where as without this patch none of them work.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Hans de Goede [Wed, 24 Nov 2010 11:57:59 +0000 (12:57 +0100)]
usb-linux: Get the alt. setting from sysfs rather then asking the dev
At least one device I have lies when receiving a USB_REQ_GET_INTERFACE,
always returning 0 even if the alternate setting is different. This is
likely caused because in practice this control message is never used as
the operating system's usb stack knows which alternate setting it has
told the device to get into, and thus this ctrl message does not get
tested by device manufacturers.
When usb_fs_type == USB_FS_SYS, the active alt. setting can be read directly
from sysfs, which allows using this device through qemu's usb redirection.
More in general it seems a good idea to not send needless control msg's to
devices, esp. as the code in question is called every time a set_interface
is done. Which happens multiple times during virtual machine startup, and
when device drivers are activating the usb device.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Hans de Goede [Wed, 24 Nov 2010 11:50:00 +0000 (12:50 +0100)]
usb-linux: introduce a usb_linux_alt_setting function
The next patch in this series introduces multiple ways to get the
alt setting dependent upon usb_fs_type, it is cleaner to put this
into its own function.
Note that this patch also changes the assumed alt setting in case
of an error getting the alt setting to be 0 (a sane default) rather
then the interface numberwhich makes no sense.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
We don't use qemu internals from spice server context any more.
Thus we don't also need to grab the iothread mutex from spice
server context. And we don't have to temporarely release the
lock to avoid deadlocks. Drop all the calls.
spice: don't call displaystate callbacks from spice server context.
This patch moves the displaystate callback calls for setting the cursor
and the mouse pointer from spice server to qemu (iothread) context.
This allows us to simplify locking.
spice: don't create updates in spice server context.
This patch moves the creation of spice screen updates from the spice
server context to qemu iothread context (display refresh timer to be
exact). This way we avoid accessing qemu internals (display surface)
from spice thread context which in turn allows us to simplify locking.
Jes Sorensen [Tue, 1 Feb 2011 14:53:23 +0000 (15:53 +0100)]
Make spice dummy functions inline to fix calls not checking return values
qemu_spice_set_passwd() and qemu_spice_set_pw_expire() dummy functions
needs to be inline, in order to handle the case where they are called
without checking the return value.
Amit Shah [Thu, 28 Apr 2011 14:34:41 +0000 (20:04 +0530)]
atapi: Explain why we need a 'media not present' state
After the re-org of the atapi code, it might not be intuitive for a
reader of the code to understand why we're inserting a 'media not
present' state between cd changes.
Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Kevin Wolf [Fri, 29 Apr 2011 08:58:12 +0000 (10:58 +0200)]
qemu-img resize: Fix option parsing
For shrinking images, you're supposed to use a negative size. However, the
leading minus makes getopt think that it's an option and so you get the help
text if you don't use -- like in 'qemu-img resize test.img -- -1G'.
This patch handles the size first and removes it from the argument list so that
getopt won't even try to interpret it and you don't need -- any more.
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