Commit Graph

27907 Commits

Author SHA1 Message Date
Marcel Apfelbaum
3d1237fb2a qemu-help: Sort devices by logical functionality
Categorize devices that appear as output to "-device ?" command
by logical functionality. Sort the devices by logical categories
before showing them to user.

The sort is done by functionality rather than alphabetical.

Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
Message-id: 1375107465-25767-3-git-send-email-marcel.a@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 10:37:09 -05:00
Marcel Apfelbaum
949fc82314 hw: import bitmap operations in qdev-core header
Made small tweaks in code to prevent compilation issues
when importing qemu/bitmap.h in qdev-core

Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
Message-id: 1375107465-25767-2-git-send-email-marcel.a@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 10:37:09 -05:00
Alexey Kardashevskiy
dbd94f8e4a spapr-vscsi: fix SOLNT bit in SRP_RSP
The driver calculates SOLNT bit from UCSOLNT and  SCSOLNT bits from
the request. The iu pointer has a type of srp_iu* which points to a union,
so cmd and rsp overlap. As the vscsi_send_rsp function calls
memset(iu, 0, sizeof(rsp)), it clears first 36 bytes of both cmd and rsp
so cmd.sol_not is always zero at the moment of calculating rsp.sol_not.

This fixes the bug.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-id: 1375073319-17488-1-git-send-email-aik@ozlabs.ru
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 10:37:09 -05:00
Anthony Liguori
c04d6cfa3f xics: rename types to be sane and follow coding style
Basically, in HW the layout of the interrupt network is:

     - One ICP per processor thread (the "presenter"). This contains the
    registers to fetch a pending interrupt (ack), EOI, and control the
    processor priority.

     - One ICS per logical source of interrupts (ie, one per PCI host
    bridge, and a few others here or there). This contains the per-interrupt
    source configuration (target processor(s), priority, mask) and the
    per-interrupt internal state.

    Under PAPR, there is a single "virtual" ICS ... somewhat (it's a bit
    oddball what pHyp does here, arguably there are two but we can ignore
    that distinction). There is no register level access. A pair of firmware
    (RTAS) calls is used to configure each virtual interrupt.

    So our model here is somewhat the same. We have one ICS in the emulated
    XICS which arguably *is* the emulated XICS, there's no point making it a
    separate "device", that would just be gross, and each VCPU has an
    associated ICP.

Yet we call the "XICS" struct icp_state and then the ICPs
'struct icp_server_state'.  It's particularly confusing when all of the
functions have xics_prefixes yet take *icp arguments.

Rename:

  struct icp_state -> XICSState
  struct icp_server_state -> ICPState
  struct ics_state -> ICSState
  struct ics_irq_state -> ICSIRQState

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-id: 1374175984-8930-12-git-send-email-aliguori@us.ibm.com
[aik: added ics_resend() on post_load]
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 10:37:09 -05:00
Alexey Kardashevskiy
e68cb8b4fa pseries: savevm support with KVM
At present, the savevm / migration support for the pseries machine will not
work when KVM is enabled.  That's because KVM manages the guest's hash page
table in the host kernel, so qemu has no visibility of it.  This patch
fixes this by using new kernel interfaces to extract and reinsert the
guest's hash table during the migration process.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Message-id: 1374175984-8930-11-git-send-email-aliguori@us.ibm.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 10:37:09 -05:00
David Gibson
1112cf94c8 pseries: savevm support for PCI host bridge
This adds the necessary support for saving the state of the PAPR virtual
PCI host bridge (or host bridges).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Message-id: 1374175984-8930-10-git-send-email-aliguori@us.ibm.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 10:37:09 -05:00
David Gibson
4be21d561d pseries: savevm support for pseries machine
This adds the necessary pieces to implement savevm / migration for the
pseries machine.  The most complex part here is migrating the hash
table - for the paravirtualized pseries machine the guest's hash page
table is not stored within guest memory, but externally and the guest
accesses it via hypercalls.

This patch uses a hypervisor reserved bit of the HPTE as a dirty bit
(tracking changes to the HPTE itself, not the page it references).
This is used to implement a live migration style incremental save and
restore of the hash table contents.

Normally a hash table is 16MB but it can get bigger depending on how
much RAM the guest has. Due to its nature, updates to it are random so
the live migration style is used for it.

In addition it adds VMStateDescription information to save and restore
the (few) remaining pieces of state information needed by the pseries
machine.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Message-id: 1374175984-8930-9-git-send-email-aliguori@us.ibm.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 10:37:08 -05:00
David Gibson
1168ec7da1 pseries: savevm support for PAPR virtual SCSI
This patch adds the necessary support for saving the state of the PAPR VIO
virtual SCSI device. This also saves and restores active SCSI requests.

[aik: implemented vscsi_req save/restore]
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-id: 1374175984-8930-8-git-send-email-aliguori@us.ibm.com
Cc: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 10:37:08 -05:00
Alexey Kardashevskiy
8ca8a17c9a pseries: rework PAPR virtual SCSI
The patch reimplements handling of indirect requests in order to
simplify upcoming live migration support.
- all pointers (except SCSIRequest*) were replaces with integer
indexes and offsets;
- DMA'ed srp_direct_buf kept untouched (ie. BE format);
- vscsi_fetch_desc() is added, now it is the only place where
descriptors are fetched and byteswapped;
- vscsi_req struct fields converted to migration-friendly types;
- many dprintf()'s fixed.

This also removed an unused field 'lun' from the spapr_vscsi device
which is assigned, but never used.  So, remove it.

[David Gibson: removed unused 'lun']
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-id: 1374175984-8930-7-git-send-email-aliguori@us.ibm.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 10:37:08 -05:00
Anthony Liguori
a83000f5e3 spapr-tce: make sPAPRTCETable a proper device
Model TCE tables as a device that's hooked up as a child object to
the owner.  Besides the code cleanup, we get a few nice benefits:

1) free actually works now (it was dead code before)

2) the TCE information is visible in the device tree

3) we can expose table information as properties such that if we
   change the window_size, we can use globals to keep migration
   working.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-id: 1374175984-8930-6-git-send-email-aliguori@us.ibm.com
[dwg: pseries: savevm support for PAPR TCE tables]
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
[alexey: ppc kvm: fix to compile]
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 10:37:08 -05:00
David Gibson
db1b58e937 pseries: savevm support for PAPR VIO logical tty
This patch adds the necessary VMStateDescription information to support
savevm/loadvm for the spapr_tty (PAPR logical serial) device.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Message-id: 1374175984-8930-5-git-send-email-aliguori@us.ibm.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 10:37:08 -05:00
David Gibson
686fefe483 pseries: savevm support for PAPR VIO logical lan
This patch adds the necessary VMStateDescription information to support
savevm/loadvm for the spapr_llan (PAPR logical lan) device.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Message-id: 1374175984-8930-4-git-send-email-aliguori@us.ibm.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 10:37:08 -05:00
David Gibson
b368a7d864 pseries: savevm support for VIO devices
This patch adds helpers to allow PAPR VIO devices to save state common
to all VIO devices during savevm.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Message-id: 1374175984-8930-3-git-send-email-aliguori@us.ibm.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 10:37:08 -05:00
Alexey Kardashevskiy
a90db1584a target-ppc: Convert ppc cpu savevm to VMStateDescription
The savevm code for the powerpc cpu emulation is currently based around
the old register_savevm() rather than register_vmstate() method.  It's also
rather broken, missing some important state on some CPU models.

This patch completely rewrites the savevm for target-ppc, using the new
VMStateDescription approach.  Exactly what needs to be saved in what
configurations has been more carefully examined, too.  This introduces a
new version (5) of the cpu save format.  The old load function is retained
to support version 4 images.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-id: 1374175984-8930-2-git-send-email-aliguori@us.ibm.com
[aik: ppc cpu savevm convertion fixed to use PowerPCCPU instead of CPUPPCState]
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 10:37:04 -05:00
Anthony Liguori
fdc43322c9 Merge remote-tracking branch 'sstabellini/xen-130729' into staging
# By Paul Durrant (1) and Stefano Stabellini (1)
# Via Stefano Stabellini
* sstabellini/xen-130729:
  Xen PV Device
  xen_disk: support "direct-io-safe" backend option

Message-id: 1375096790-12815-1-git-send-email-stefano.stabellini@eu.citrix.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 07:30:31 -05:00
Anthony Liguori
b0a71c3b39 Merge remote-tracking branch 'agraf/s390-for-upstream' into staging
# By Alexander Graf (1) and others
# Via Alexander Graf
* agraf/s390-for-upstream:
  s390: update s390-ccw.img
  s390/ipl: Fix boot order
  s390/IPL: Allow boot from other ssid than 0

Message-id: 1375092324-23943-1-git-send-email-agraf@suse.de
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 07:30:21 -05:00
Anthony Liguori
f60a0d6ab9 Merge remote-tracking branch 'sweil/w32' into staging
# By Stefan Weil (10) and others
# Via Aurelien Jarno (1) and Stefan Weil (1)
* sweil/w32: (27 commits)
  w32, w64: Add build rule for installer
  target-mips: fix mipsdsp_mul_q31_q31
  mips_malta: fix copy of the 0x1fc00000 region
  linux-user: correct argument number for sys_mremap and sys_splice
  target-mips: Remove assignment to a variable which is never used
  target-mips: fix mipsdsp_trunc16_sat16_round
  hw/mips: align initrd to 64KB to avoid kernel error
  pflash_cfi01: duplicate status byte from bits 23:16 for 32bit reads
  mips_malta: generate SMBUS EEPROM data
  mips_malta: cap BIOS endian swap length at 0x3e0000 bytes
  mips_malta: generate SPD EEPROM data at runtime
  mips_malta: correct reading MIPS revision at 0x1fc00010
  mips_malta: fix BIOS endianness swapping
  mips_malta: QOM cast cleanup
  target-mips: fix branch in likely delay slot tcg assert
  target-mips: fix multiplication in mipsdsp_rndq15_mul_q15_q15
  target-mips: Remove assignment to a variable which is never used
  misc: Use g_assert_not_reached for code which is expected to be unreachable
  qemu-options: mention C-a h in the -nographic doc
  misc: Fix new typos in comments and strings
  ...

Message-id: 1374989579-24933-1-git-send-email-sw@weilnetz.de
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29 07:30:06 -05:00
Paul Durrant
8fbab3b62a Xen PV Device
Introduces a new Xen PV PCI device which will act as a binding point for
PV drivers for Xen.
The device has parameterized vendor-id, device-id and revision to allow to
be configured as a binding point for any vendor's PV drivers.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
2013-07-29 11:13:44 +00:00
Stefano Stabellini
454ae734f1 xen_disk: support "direct-io-safe" backend option
Support backend option "direct-io-safe".  This is documented as
follows in the Xen backend specification:

 * direct-io-safe
 *      Values:         0/1 (boolean)
 *      Default Value:  0
 *
 *      The underlying storage is not affected by the direct IO memory
 *      lifetime bug.  See:
 *        http://lists.xen.org/archives/html/xen-devel/2012-12/msg01154.html
 *
 *      Therefore this option gives the backend permission to use
 *      O_DIRECT, notwithstanding that bug.
 *
 *      That is, if this option is enabled, use of O_DIRECT is safe,
 *      in circumstances where we would normally have avoided it as a
 *      workaround for that bug.  This option is not relevant for all
 *      backends, and even not necessarily supported for those for
 *      which it is relevant.  A backend which knows that it is not
 *      affected by the bug can ignore this option.
 *
 *      This option doesn't require a backend to use O_DIRECT, so it
 *      should not be used to try to control the caching behaviour.

Also, BDRV_O_NATIVE_AIO is ignored if BDRV_O_NOCACHE, so clarify the
default flags passed to the qemu block layer.

The original proposal for a "cache" backend option has been dropped
because it was believed too wide, especially considering that at the
moment the backend doesn't have a way to tell the toolstack that it is
capable of supporting it.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
2013-07-29 11:03:48 +00:00
Alexander Graf
867b18db21 s390: update s390-ccw.img
This enables the following patches:

  s390/IPL: Allow boot from other ssid than 0
  s390/ipl: Fix spurious errors in virtio

Signed-off-by: Alexander Graf <agraf@suse.de>
2013-07-29 12:02:00 +02:00
Christian Borntraeger
5c8ded6ef5 s390/ipl: Fix boot order
The latest ipl code adaptions collided with some of the virtio
refactoring rework. This resulted in always booting the first
disk. Let's fix booting from a given ID.
The new code also checks for command lines without bootindex to
avoid random behaviour when accessing dev_st (==0).

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2013-07-29 12:02:00 +02:00
Dominik Dingel
c8cda8748e s390/IPL: Allow boot from other ssid than 0
We now take the subchannel set id also into account to find the boot device.
If we want to use a subchannel set other than the default set 0, we first
need to enable the mss facility.

Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2013-07-29 12:02:00 +02:00
Stefan Weil
f53ec69992 w32, w64: Add build rule for installer
The new rules in Makefile allow building installers for QEMU on Windows
using NSIS, a package which is also available for Linux distributions
(so cross builds are possible).

The rules for NSIS are in qemu.nsi which also uses two new images.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
2013-07-29 11:43:37 +02:00
Aurelien Jarno
461bdb3414 Merge branch 'trivial-patches' of git://git.corpit.ru/qemu
* 'trivial-patches' of git://git.corpit.ru/qemu:
  target-mips: Remove assignment to a variable which is never used
  misc: Use g_assert_not_reached for code which is expected to be unreachable
  qemu-options: mention C-a h in the -nographic doc
  misc: Fix new typos in comments and strings
  linux-user: correct argument number for sys_mremap and sys_splice
  PPC: dbdma: macio: Fix format specifiers (build regression)
  watchdog: Remove break after exit
  exec: Remove env from list of poisoned names
  hw/9pfs: Fix potential memory leak and avoid reuse of freed memory
  timer: make timers_state static
  aes: Remove unused code (NDEBUG, u16)
2013-07-29 09:03:23 +02:00
Petar Jovanovic
b6a9f4682e target-mips: fix mipsdsp_mul_q31_q31
Multiplication of two fractional word elements is not correct when sign
extension/promotion is needed. This change fixes it by adding correct
casts from unsigned to signed values.
In addition, the tests (dpaq_sa_l_w.c and dpsq_sa_l_w.c) have been extended
to trigger the current issue.

Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-29 07:48:17 +02:00
Aurelien Jarno
f05d4d94d6 mips_malta: fix copy of the 0x1fc00000 region
Copy the whole 0x1fe000000 region into 0x1fc00000, independently of the
loaded BIOS size. This fix the MIPS make check tests.

Reported-by: Andreas Färber <afaerber@suse.de>
Tested-by: Andreas Färber <afaerber@suse.de>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-29 07:48:09 +02:00
Petar Jovanovic
b0932e0617 linux-user: correct argument number for sys_mremap and sys_splice
sys_mremap missed 5th argument (new_address), which caused examples that
remap to a specific address to fail.
sys_splice missed 5th and 6th argument which caused different examples to
fail.
This change has an effect on MIPS target only.

Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-29 00:37:14 +02:00
Stefan Weil
d2e46d59ca target-mips: Remove assignment to a variable which is never used
This assignment causes a compiler warning for compilations with the compiler
option -Wunused-but-set-variable (which is included with -Wextra).

Removing it allows using -Wextra for QEMU code without suppressing too many
extra warnings.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-29 00:31:43 +02:00
Petar Jovanovic
d36c231f4b target-mips: fix mipsdsp_trunc16_sat16_round
This change corrects rounding and saturation of Q31 fractional value in
mipsdsp_trunc16_sat16_round(). Overflow detection was incorrect for the
corner case for PRECRQ_RS.PH, and this test case is also part of the change.

Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-29 00:27:36 +02:00
James Hogan
05b3274b6b hw/mips: align initrd to 64KB to avoid kernel error
The Linux kernel can be configured to use 64KB pages, but it also
requires initrd to be page aligned. Therefore, to be safe, align the
initrd to 64KB using a new INITRD_PAGE_MASK rather than
TARGET_PAGE_MASK.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-29 00:27:35 +02:00
Paul Burton
ea0a4f3441 pflash_cfi01: duplicate status byte from bits 23:16 for 32bit reads
The firmware commonly used with MIPS Malta boards (YAMON) reads the
status of the pflash with a 32bit memory access. On real hardware
this results in the status byte being mirrored in the upper 16 bits
of the read value. For example if the status byte is represented by
SS then the hardware reads 0x00SS00SS. The YAMON firmware compares the
status against 32bit values expecting the mirrored value and fails
without it.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-28 19:59:23 +02:00
Paul Burton
35c648078a mips_malta: generate SMBUS EEPROM data
The malta contains 2 EEPROMs, one containing SPD data for the SDRAM and
another containing board information such as serial number and MAC
address. These are both exposed via the PIIX4 SMBUS. Generating this
data and providing it to smbus_eeprom_init will allow YAMON to read a
serial number for the board and prevent it from warning that the EEPROM
data is invalid.

We already have the contents of the SPD EEPROM which are exposed via
FPGA I2C accesses, this is provided as part of the SMBUS EEPROM data
too for consistency.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-28 19:59:23 +02:00
Paul Burton
1817f56a83 mips_malta: cap BIOS endian swap length at 0x3e0000 bytes
This preserves the final sector of the pflash which is used by YAMON to
hold environment variables. If the endianness of the environment data
is swapped then YAMON will fail to load environment variables from
pflash.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-28 19:59:23 +02:00
Paul Burton
02bccc7796 mips_malta: generate SPD EEPROM data at runtime
The SPD EEPROM specifies the amount of memory present in the system and
thus its correct contents can only be known at runtime. Calculating
parts of the data on init allows the data to accurately reflect the
amount of target memory present and allow YAMON to boot with an
arbitrary amount of SDRAM.

Where possible the SPD data will favor indicating 2 banks of SDRAM
rather than 1. For example the default 128MB of target memory will be
represented as 2x64MB banks rather than 1x128MB bank. This allows
versions of MIPS BIOS code (such as YAMON 2.22 and older) to boot
despite a bug preventing them from handling a single bank of SDRAM with
the Galileo GT64120 system controller emulated by QEMU.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-28 19:59:22 +02:00
Paul Burton
a427338b22 mips_malta: correct reading MIPS revision at 0x1fc00010
Rather than modifying the BIOS code at its original location, copy it
for the 0x1fc00000 region & modify the copy. This means the original
ROM code is correctly readable at 0x1e000010 whilst the MIPS revision
is readable at 0x1fc00010.

Additionally the code previously operated on target memory which would
later be overwritten by the BIOS image upon CPU reset if the -bios
argument was used to specify the BIOS image. This led to the written
MIPS revision being lost. Copying using rom_copy when -bios is used
fixes this issue.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-28 19:53:35 +02:00
Paul Burton
a2b8813d62 mips_malta: fix BIOS endianness swapping
If the target is little endian (mipsel) then the BIOS image endianness
is swapped so that the big endian BIOS binaries commonly produced can be
loaded correctly.

When using the -bios argument the BIOS is loaded using
load_image_targphys, however this doesn't perform the load to target
memory immediately. Instead it loads the BIOS file into a struct Rom
which will later be written to target memory upon reset. However the
endianness conversion was being performed before this, on init, and
operating on the target memory which at this point is blank & will later
be overwritten by the (big endian) BIOS image. Correct this by operating
on the data referenced by struct Rom rather than the target memory when
the -bios argument is used.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-28 19:18:07 +02:00
Andreas Färber
cba5cb67be mips_malta: QOM cast cleanup
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-28 18:57:47 +02:00
James Hogan
240ce26a05 target-mips: fix branch in likely delay slot tcg assert
When a branch delay slot contains another branch instruction, the code
generated raises an exception, however since is_branch==1,
handle_delay_slot() doesn't get called immediately. This means
ctx->bstate isn't set to BS_BRANCH, and the decoder continues decoding
until a non-branch instruction is found.

If the first branch was a branch likely instruction then each
instruction after it generates code for the unlikely case, to go to the
next tb starting after the delay slot. This results in multiple goto_tb
tcg ops being generated with the same exit number. When debug is enabled
this hits:

tcg-op.h:2589: tcg_gen_goto_tb: Assertion `(tcg_ctx.goto_tb_issue_mask & (1 << idx)) == 0' failed.

This is fixed by removing is_branch entirely, and calling
handle_delay_slot() if (ctx.hflags & MIPS_HFLAG_BMASK) was set prior to
the current instruction being decoded. This still prevents
handle_delay_slot() being called immediately after a branch but allows
it to still be called after a branch within a delay slot.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-28 18:33:44 +02:00
Petar Jovanovic
4877866ee4 target-mips: fix multiplication in mipsdsp_rndq15_mul_q15_q15
Multiplication of Q15 fractional halfword vectors was incorrect in the
previous implementation of mipsdsp_rndq15_mul_q15_q15. It failed to take
element signs into account. This change fixes it, and it adds a test case
for it.

The change also removes unnecessary cast in the function
mipsdsp_mul_q15_q15_overflowflag21().

Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com>
Reviewed-by: Richard Henderson  <rth@twiddle.net> 
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-28 18:26:36 +02:00
Stefan Weil
6c86f405ef target-mips: Remove assignment to a variable which is never used
This assignment causes a compiler warning for compilations with the compiler
option -Wunused-but-set-variable (which is included with -Wextra).

Removing it allows using -Wextra for QEMU code without suppressing too many
extra warnings.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-07-27 11:22:54 +04:00
Stefan Weil
dfc6f86567 misc: Use g_assert_not_reached for code which is expected to be unreachable
The macro g_assert_not_reached is a better self documenting replacement
for assert(0) or assert(false).

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-07-27 11:22:54 +04:00
Ramkumar Ramachandra
b031f413b9 qemu-options: mention C-a h in the -nographic doc
Otherwise, a new user will be wondering how to switch between the
console and monitor.

Cc: Anthony Liguori <aliguori@us.ibm.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-07-27 11:22:54 +04:00
Stefan Weil
52f350227f misc: Fix new typos in comments and strings
All these typos were found by codespell.

sould -> should
emperical -> empirical
intialization -> initialization
successfuly -> successfully
gaurantee -> guarantee

Fix also another error (before before) in the same context.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-07-27 11:22:54 +04:00
Petar Jovanovic
6064be7912 linux-user: correct argument number for sys_mremap and sys_splice
sys_mremap missed 5th argument (new_address), which caused examples that
remap to a specific address to fail.
sys_splice missed 5th and 6th argument which caused different examples to
fail.
This change has an effect on MIPS target only.

Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-07-27 11:22:54 +04:00
Stefan Weil
04dd125942 PPC: dbdma: macio: Fix format specifiers (build regression)
Fix a number of warnings for 32 bit builds (tested on MingW and Linux):

  CC    hw/ide/macio.o
qemu/hw/ide/macio.c: In function 'pmac_ide_atapi_transfer_cb':
qemu/hw/ide/macio.c:134:9: error: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'hwaddr' [-Werror=format]
qemu/hw/ide/macio.c: In function 'pmac_ide_transfer_cb':
qemu/hw/ide/macio.c:215:5: error: format '%ld' expects argument of type 'long int', but argument 5 has type 'int64_t' [-Werror=format]
qemu/hw/ide/macio.c:222:9: error: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'hwaddr' [-Werror=format]
qemu/hw/ide/macio.c:264:9: error: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'hwaddr' [-Werror=format]
cc1: all warnings being treated as errors
make: *** [hw/ide/macio.o] Error 1

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-07-27 11:22:54 +04:00
Stefan Weil
f6019e5fad watchdog: Remove break after exit
This was dead code.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-07-27 11:22:54 +04:00
Stefan Weil
0dd60ae2f4 exec: Remove env from list of poisoned names
The global variable env was removed some time ago, so this name may be
used without any restriction now.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-07-27 11:22:54 +04:00
Stefan Weil
80cba1b71e hw/9pfs: Fix potential memory leak and avoid reuse of freed memory
The leak was reported by cppcheck.

Function proxy_init also calls g_free for ctx->fs_root.
Avoid reuse of this memory by setting ctx->fs_root to NULL.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-07-27 11:22:54 +04:00
Liu Ping Fan
d9cd4007d5 timer: make timers_state static
Signed-off-by: Liu Ping Fan <pingfank@linux.vnet.ibm.com>
Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-07-27 11:22:53 +04:00
Stefan Weil
9220eeed62 aes: Remove unused code (NDEBUG, u16)
The current code includes assert.h very early (from qemu-common.h),
so the definition of NDEBUG was without any effect.

In the initial version from 2004, NDEBUG was used to disable the assertions.
Those assertions are not in time critical code, so it is no longer
reasonable to disable them and the definition of NDEBUG can be removed.

Type u16 is also unused and therefore does not need a type definition.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-07-27 11:22:53 +04:00