With all of the pre-existing code that would not compile gone,
this is the earliest point at which the target can be enabled.
There is no machine defined yet, so this will crash on startup.
Enable the target anyway, to make sure that further compilation
problems do not creep back in.
Delete all the code that tried to emulate the real IPRs of some
unnamed CPU. Replace those with just 3 slots that we can use to
communicate trap information between the helper functions that
signal exceptions and the OS trap handler.
target-alpha: Fix translation of PALmode memory insns.
All of the "raw" memory accesses should be "phys" instead. Fix
some confusion about argument ordering of the store routines.
Fix the implementation of store-conditional.
Delete the "alt-mode" helpers. Because we only implement two
mmu modes, let /a imply user-mode unconditionally.
Leave some combinations of virt access without permission
checks as unimplemented. There are too many hoops through
which to jump, and these insns will not be needed in the
emulation palcode.
target-alpha: Single-step properly across branches.
We were failing to generate EXC_DEBUG in the EXIT_PC_UPDATED path.
This caused us not to stop at the instruction after a branch, but
on the instruction afterward.
Marcus Comstedt [Sat, 28 May 2011 14:55:52 +0000 (16:55 +0200)]
bitbang_i2c: Fix spurious slave read after NACK
After NACKing a read operation, a raising SCL should not trigger a new
read from the slave. Introduce a new state which just waits for a stop
or start condition after NACK.
virtio-serial-bus needs to treat "virtconsole" devices specially. It
uses VirtIOSerialPort member is_console to recognize them. It gets
its value via property initialization. Cute hack, except it lets
users mess with it: "-device virtconsole,is_console=0" isn't plugged
into port 0 as it should.
Move the flag to VirtIOSerialPortInfo. Keep the property for backward
compatibility; its value has no effect.
Alon Levy [Fri, 29 Apr 2011 11:25:06 +0000 (14:25 +0300)]
virtio-serial-bus: use bh for unthrottling
Instead of calling flush_queued_data when unthrottling, schedule
a bh. That way we can return immediately to the caller, and the
flush uses the same call path as a have_data for callbackee.
No migration change is required because bh are called from vm_stop.
Paolo Bonzini [Mon, 18 Apr 2011 12:29:16 +0000 (14:29 +0200)]
scsi-generic: Handle queue full
The sg driver currently has a hardcoded limit of commands it
can handle simultaneously. When this limit is reached the
driver will return -EDOM. So we need to capture this to
enable proper return values here.
Hannes Reinecke [Mon, 18 Apr 2011 10:57:22 +0000 (12:57 +0200)]
scsi-disk: add data direction checking
scsi_req_parse() already provides for a data direction setting,
so we should be using it to check for correct direction.
And we should return the sense code 'INVALID FIELD IN CDB'
in these cases.
Hannes Reinecke [Mon, 18 Apr 2011 11:36:02 +0000 (13:36 +0200)]
scsi: Implement 'get_sense' callback
The get_sense callback copies existing sense information into
the provided buffer. This is required if sense information
should be transferred together with the command response.
Hannes Reinecke [Mon, 18 Apr 2011 10:53:14 +0000 (12:53 +0200)]
scsi: Update sense code handling
The SCSI spec has a quite detailed list of sense codes available.
It even mandates the use of specific ones for some failure cases.
The current implementation just has one type of generic error
which is actually a violation of the spec in certain cases.
This patch introduces various predefined sense codes to have the
sense code reporting more in line with the spec.
On top of Hannes's patch I fixed the reply to REQUEST SENSE commands
with DESC=0 and a small (<18) length.
Paolo Bonzini [Mon, 18 Apr 2011 20:53:08 +0000 (22:53 +0200)]
scsi: introduce scsi_req_cancel
This is for when the request must be dropped in the void,
but still memory should be freed. To this end, the devices
register a second callback in SCSIBusOps.
Hannes Reinecke [Mon, 18 Apr 2011 10:35:39 +0000 (12:35 +0200)]
scsi: Use 'SCSIRequest' directly
Currently the SCSIRequest structure is abstracted away and cannot accessed
directly from the driver. This requires the handler to do a lookup on
an abstract 'tag' which identifies the SCSIRequest structure.
With this patch the SCSIRequest structure is exposed to the driver. This
allows use to use it directly as an argument to the SCSIDeviceInfo
callback functions and remove the lookup.
A new callback function 'alloc_req' is introduced matching 'free
req'; unref'ing to free up resources after use is moved into the
scsi_command_complete callbacks.
This temporarily introduces a leak of requests that are cancelled,
when they are removed from the queue and not from the driver. This
is fixed later by introducing scsi_req_cancel. That patch in turn
depends on this one, because the argument to scsi_req_cancel is a
SCSIRequest.
Paolo Bonzini [Mon, 18 Apr 2011 14:01:56 +0000 (16:01 +0200)]
scsi: reference-count requests
With the next patch, a device may hold SCSIRequest for an indefinite
time. Split a rather big patch, and protect against access errors,
by reference counting them.
There is some ugliness in scsi_send_command implementation due to
the need to unref the request when it fails. This will go away
with the next patches, which move the unref'ing to the devices.
Paolo Bonzini [Mon, 18 Apr 2011 15:11:14 +0000 (17:11 +0200)]
scsi: introduce SCSIBusOps
There are more operations than a SCSI bus can handle, besides completing
commands. One example, which this series will introduce, is cleaning up
after a request is cancelled.
More long term, a "SCSI bus" can represent the LUNs attached to a
target; in this case, while all commands will ultimately reach a logical
unit, it is the target who is in charge of answering REPORT LUNs.
Paolo Bonzini [Tue, 3 May 2011 12:15:59 +0000 (14:15 +0200)]
scsi-generic: Remove bogus double complete
scsi-generic scsi_read_complete() should not -both- call the client
complete callback with SCSI_REASON_DATA -and- call
scsi_command_complete(). The former will cause the client to queue a
new read or write request, while the later will free the request data
structure, thus causing the new read or write request to use a
freed/stale structure when it completes.
This patch fixes the bug, fixing a crash with scsi-generic & RHEL5.5
installer.
Gerd Hoffmann [Fri, 3 Dec 2010 15:17:28 +0000 (16:17 +0100)]
usb: add ehci adapter
This patch finally merges the EHCI host adapter aka USB 2.0 support.
Based on the ehci bits collected @ git://git.kiszka.org/qemu.git ehci
EHCI has a long out-of-tree history. Project was started by Mark
Burkley, with contributions by Niels de Vos. David S. Ahern continued
working on it. Kevin Wolf, Jan Kiszka and Vincent Palatin contributed
bugfixes.
/me (Gerd Hoffmann) picked it up where it left off, prepared the code
for merge, fixed a few bugs and added basic user docs.
Gerd Hoffmann [Thu, 12 May 2011 11:20:39 +0000 (13:20 +0200)]
usb: add usb_handle_packet
Add a usb_handle_packet function, put it into use everywhere.
Right now it just calls dev->info->handle_packet(), that will
change in future patches though.
Gerd Hoffmann [Mon, 16 May 2011 12:25:59 +0000 (14:25 +0200)]
usb-storage: don't call usb_packet_complete twice
usb_msd_copy_data() may cause a recursive call to
usb_msd_command_complete() which in turn may complete
the packet, setting s->packet to NULL in case it does.
Recheck s->packet before calling usb_packet_complete()
to fix the double call.
Gerd Hoffmann [Mon, 16 May 2011 09:30:57 +0000 (11:30 +0200)]
usb-linux: fix max_packet_size for highspeed.
Calculate the max packet size correctly. Only bits 0..11 specify the size,
bits 11+12 specify the number of (highspeed) microframes the endpoint wants
to use.
Gerd Hoffmann [Mon, 16 May 2011 08:21:51 +0000 (10:21 +0200)]
usb-linux: split large xfers
Add support for splitting large transfers into multiple smaller ones.
This is needed for the upcoming EHCI emulation which allows guests
to submit requests up to 20k in size. The linux kernel allows 16k
max size though.
Based on a patch from David Ahern, see
http://www.mail-archive.com/[email protected]/msg30337.html
Gerd Hoffmann [Mon, 16 May 2011 07:20:06 +0000 (09:20 +0200)]
usb-linux: walk async urb list in cancel
Lookup async urbs which are to be canceled using the linked list
instead of the direct opaque pointer. There are two reasons we
are doing that: First, to avoid the opaque poiner to the callback,
which is needed for upcoming cleanups. Second, because we might
need multiple urbs per request for highspeed support, so a single
opaque pointer doesn't cut it any more anyway.
Gerd Hoffmann [Mon, 16 May 2011 07:13:05 +0000 (09:13 +0200)]
usb-linux: track aurbs in list
This patch adds code to track all async urbs in a linked list,
so we can find them without having to pass around a opaque
pointer to them. Prerequisite for the cleanups.
Gerd Hoffmann [Tue, 10 May 2011 10:07:42 +0000 (12:07 +0200)]
usb-linux: add hostport property
This patch adds a hostport property which allows to specify the host usb
devices to pass through by bus number and physical port. This means you
can basically hand over one (or more) of the usb plugs on your host to
the guest and whatever device is plugged in there will show up in the
guest.
Usage:
-device usb-host,hostbus=1,hostport=1
You can figure the port numbers by plugging in some usb device, then
find it in "info usbhost" and pick bus and port specified there.
Gerd Hoffmann [Tue, 10 May 2011 09:43:57 +0000 (11:43 +0200)]
usb-linux: fix device path aka physical port handling
The device path isn't just a number. It specifies the physical port
the device is connected to and in case the device is connected via
usb hub you'll have two numbers there, like this: "5.1". The first
specifies the root port where the hub is plugged into, the second
specifies the port number of the hub where the device is plugged in.
With multiple hubs chained the string can become longer.
This patch renames devpath to port and makes it a string. It also
adapts the sysfs parsing code accordingly. The parser code is also more
strict now and skips the root hubs (which can't be assigned anyway).
The "info usbhost" monitor command now prints bus number, (os-assigned)
device address and physical port for each device.
Hans de Goede [Wed, 2 Feb 2011 16:36:29 +0000 (17:36 +0100)]
usb-linux: use usb_generic_handle_packet()
Make the linux usb host passthrough code use the usb_generic_handle_packet()
function, rather then the curent DYI code. This removes 200 lines of almost
identical code.
Hans de Goede [Wed, 2 Feb 2011 15:33:13 +0000 (16:33 +0100)]
usb: Pass the packet to the device's handle_control callback
This allows using the generic usb_generic_handle_packet function from
device code which does ASYNC control requests (such as the linux host
pass through code).
usb: add support for "grouped" interfaces and the Interface Association Descriptor
This is used for some devices that have multiple interfaces that form a logic
device. An example is Video Class, which has a Control interface and a
Streaming interface. There can be additional interfaces on the same (physical)
devices (e.g. a microphone), and Interface Association Descriptor handles this
case.
Peter Maydell [Thu, 19 May 2011 13:46:16 +0000 (14:46 +0100)]
target-arm: Signal InvalidOp for Neon GE and GT compares of QNaN
If the input to a Neon float comparison is a quiet NaN, the ARM ARM
specifies that we should raise InvalidOp if the comparison is GE or GT
but not for EQ. (Signaling NaNs raise InvalidOp regardless). This means
only EQ should use the _quiet version of the comparison function.
We implement this by cleaning up the comparison helpers to call the
appopriate versions of the softfloat simple comparison functions
(float32_le and friends) rather than the generic float32_compare functions.
This makes them simple enough that they are clearer opencoded rather
than macroised.
Peter Maydell [Thu, 19 May 2011 13:46:19 +0000 (14:46 +0100)]
target-arm: Use correct float status for Neon int-float conversions
The Neon versions of int-float conversions must use the "standard FPSCR"
rather than the default FPSCR. Implement this by having the helper
functions take a pointer to the appropriate float_status value rather
than simply taking a pointer to the entire CPUState, and making
translate.c pass a pointer to vfp.fp_status or vfp.standard_fp_status
appropriately for whether the instruction being translated is Neon
or VFP.
Peter Maydell [Thu, 19 May 2011 13:46:18 +0000 (14:46 +0100)]
target-arm: Signal Underflow when denormal flushed to zero on output
On ARM the architecture mandates that when an output denormal is flushed to
zero we must set the FPSCR UFC (underflow) bit, so map softfloat's
float_flag_output_denormal accordingly.
Peter Maydell [Thu, 19 May 2011 13:46:17 +0000 (14:46 +0100)]
softfloat: Add new flag for when denormal result is flushed to zero
Add a new float_flag_output_denormal which is set when the result
of a floating point operation would be denormal but is flushed to
zero because we are in flush_to_zero mode. This is necessary because
some architectures signal this condition as an underflow and others
signal it as an inexact result.
Peter Maydell [Thu, 19 May 2011 13:46:15 +0000 (14:46 +0100)]
target-arm: Signal InputDenormal for VRECPE, VRSQRTE, VRECPS, VRSQRTS
The helpers for VRECPE.F32, VSQRTE.F32, VRECPS and VRSQRTS handle denormals
as special cases, so we must set the InputDenormal exception flag ourselves.
Peter Maydell [Thu, 19 May 2011 13:46:14 +0000 (14:46 +0100)]
target-arm: Don't set FP exceptions in recip, recip_sqrt estimate fns
The functions which do the core estimation algorithms for the VRSQRTE
and VRECPE instructions should not set floating point exception flags,
so use a local fp status for doing these calculations.
Aurelien Jarno [Tue, 17 May 2011 16:25:45 +0000 (18:25 +0200)]
tcg: don't keep dead outputs in registers
If an op with dead outputs is not removed, because it has side effects
or has multiple output and only one dead, mark the registers as dead
instead of saving them. This avoid a few register spills on TCG targets
with low register count, especially with div2 and mul2 ops, or when a
qemu_ld* result is not used (prefetch emulation for example).
Aurelien Jarno [Mon, 23 May 2011 20:35:37 +0000 (22:35 +0200)]
Merge branch 'ppc-next' of git://repo.or.cz/qemu/agraf
* 'ppc-next' of git://repo.or.cz/qemu/agraf:
Fix a bug in mtsr/mtsrin emulation on ppc64
pSeries: Clean up write-only variables
w32: Fix compilation and replace non-portable usage of ulong
Aurelien Jarno [Mon, 23 May 2011 20:33:39 +0000 (22:33 +0200)]
Merge branch 's390-next' of git://repo.or.cz/qemu/agraf
* 's390-next' of git://repo.or.cz/qemu/agraf:
s390x: complain when allocating ram fails
s390x: fix memory detection for guests > 64GB
s390x: change mapping base to allow guests > 2GB
s390x: Fix debugging for unknown sigp order codes
s390x: build s390x by default
s390x: remove compatibility cc field
s390x: Adjust GDB stub
s390x: translate engine for s390x CPU
s390x: Adjust internal kvm code
s390x: Implement opcode helpers
s390x: helper functions for system emulation
s390x: Shift variables in CPUState for memset(0)
s390x: keep hint on virtio managing size
s390x: make kvm exported functions conditional on kvm
s390x: s390x-linux-user support
tcg: extend max tcg opcodes when using 64-on-32bit
s390x: fix smp support for kvm
Peter Maydell [Fri, 20 May 2011 09:11:53 +0000 (10:11 +0100)]
hw/sd.c: Don't complain about SDIO commands CMD52/CMD53
The SDIO specification introduces new commands 52 and 53.
Handle as illegal command but do not complain on stderr,
as SDIO-aware OSes (including Linux) may legitimately use
these in their probing for presence of an SDIO card.
Blue Swirl [Sat, 14 May 2011 11:55:30 +0000 (11:55 +0000)]
Delete unused tb_invalidate_page_range
tb_invalidate_page_range() was intended to be used to invalidate an
area of a TB which the guest explicitly flushes from i-cache. However,
QEMU detects writes to code areas where TBs have been generated, so
his has never been useful.
David Gibson [Fri, 20 May 2011 03:34:59 +0000 (13:34 +1000)]
Fix a bug in mtsr/mtsrin emulation on ppc64
Early ppc64 CPUs include a hack to partially simulate the ppc32 segment
registers, by translating writes to them into writes to the SLB. This is
not used by any current Linux kernel, but it is used by the openbios used
in the qemu mac99 model.
Commit 81762d6dd0d430d87024f2c83e9c4dcc4329fb7d, cleaning up the SLB
handling introduced a bug in this code, breaking the openbios currently in
qemu. Specifically, there was an off by one error bitshuffling the
register format used by mtsr into the format needed for the SLB load,
causing the flag bits to end up in the wrong place. This caused the
storage keys to be wrong under openbios, meaning that the translation code
incorrectly thought a legitimate access was a permission violation.
This patch fixes the bug, at the same time it fixes some build bug in the
MMU debugging code (only exposed when DEBUG_MMU is enabled).
David Gibson [Tue, 17 May 2011 06:47:04 +0000 (16:47 +1000)]
pSeries: Clean up write-only variables
A few pieces of the pSeries emulation code have variables which are set
but never used, which causes warnings on gcc 4.6. This patch removes
these instances.
Stefan Weil [Sat, 14 May 2011 23:38:04 +0000 (23:38 +0000)]
w32: Fix compilation and replace non-portable usage of ulong
ulong is undefined for w32 (and maybe other) compilations.
Replace it by uintptr_t (which also fixes compilation for w64
and is a better choice for pointer to integer conversions).
Alexander Graf [Fri, 20 May 2011 15:33:28 +0000 (17:33 +0200)]
s390x: complain when allocating ram fails
While trying out the > 64GB guest RAM patch, I hit some virtual address
limitations of my host system, which resulted in mmap failing. Unfortunately,
qemu didn't tell me about this failure, but just used the NULL pointer
happily, resulting in either segmentation faults or other fun errors.
To spare other users from tracing this down, let's print a nice message
instead so the user can figure out what's wrong from there.
the s390 memory detection has a 16bit field that specifies the amount of
increments. This patch adopts the memory size to always fit into that
scheme. This also fixes virtio detection for these guests, since the
descriptor page is located after the main memory.
which limits the amount of available memory to <2GB.
This patch moves the guest pages to 32GB to not collide with the binary
and to leave some space for the program break of qemu.
On unknown sigp order codes we print a debug message. This patch
fixes the output, since we want to see the order_code and not
the register numbers.
Patch applies on agraf tree.
Alexander Graf [Wed, 23 Mar 2011 09:58:07 +0000 (10:58 +0100)]
s390x: Adjust GDB stub
We have successfully lazilized cc computation, so we need to manually
trigger its calculation when gdb wants to fetch it. We also changed the
variable name, so writing it writes into a different field now.
projects / qemu.git / log