Commit Graph

455 Commits

Author SHA1 Message Date
Mark Cave-Ayland
ba0b17dd8f dbdma: always define DBDMA_DPRINTF and enable debug with DEBUG_DBDMA
Enabling DBDMA_DPRINTF unconditionally ensures that any errors in debug
statements are picked up immediately.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-07-18 10:40:27 +10:00
Cédric Le Goater
79a9f323a8 ast2400: externalize revision numbers
AST2400_A0_SILICON_REV is defined twice. Fix this by including the
definition in the header file as well as the routine to check if a
silicon revision is supported. It will useful to reuse in other
controllers.

Let's add also AST2500_A0_SILICON_REV for future use.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-id: 1467994016-11678-5-git-send-email-clg@kaod.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-07-14 16:51:39 +01:00
Cédric Le Goater
2ddfa2817b hw/misc: fix typo in Aspeed SCU hw-strap2 property name
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-id: 1467994016-11678-2-git-send-email-clg@kaod.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-07-14 16:51:38 +01:00
Peter Maydell
190c93c982 * SCSI scanner support
* fixes to qemu-char and net exit
 * FreeBSD fixes
 * Other small bugfixes
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* SCSI scanner support
* fixes to qemu-char and net exit
* FreeBSD fixes
* Other small bugfixes

# gpg: Signature made Wed 13 Jul 2016 12:30:11 BST
# gpg:                using RSA key 0xBFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream:
  hostmem: detect host backend memory is being used properly
  hostmem: fix QEMU crash by 'info memdev'
  char: do not use atexit cleanup handler
  net: do not use atexit for cleanup
  slirp: use exit notifier for slirp_smb_cleanup
  tap: use an exit notifier to call down_script
  util: Fix MIN_NON_ZERO
  qemu-sockets: use qapi_free_SocketAddress in cleanup
  disas: avoid including everything in headers compiled from C++
  json-streamer: fix double-free on exiting during a parse
  main-loop: check return value before using pointer
  Use "-s" instead of "--quiet" to resolve non-fatal build error on FreeBSD.
  scsi-bus: Use longer sense buffer with scanners
  scsi-bus: Add SCSI scanner support

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-07-14 13:44:06 +01:00
Xiao Guangrong
2aece63c8a hostmem: detect host backend memory is being used properly
Currently, we use memory_region_is_mapped() to detect if the host
backend memory is being used. This works if the memory is directly
mapped into guest's address space, however, it is not true for
nvdimm as it uses aliased memory region to map the memory. This is
why this bug can happen:
   https://bugzilla.redhat.com/show_bug.cgi?id=1352769

Fix it by introduce a new filed, is_mapped, to HostMemoryBackend,
we set/clear this filed accordingly when the device link/unlink to
host backend memory

Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-07-13 13:30:04 +02:00
Markus Armbruster
a9c94277f0 Use #include "..." for our own headers, <...> for others
Tracked down with an ugly, brittle and probably buggy Perl script.

Also move includes converted to <...> up so they get included before
ours where that's obviously okay.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-07-12 16:19:16 +02:00
Peter Maydell
74e1b782b3 MIPS patches 2016-07-12
Changes:
 * support 10-bit ASIDs
 * MIPS64R6-generic renamed to I6400
 * initial GIC support
 * implement RESET_BASE register in CM GCR
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Merge remote-tracking branch 'remotes/lalrae/tags/mips-20160712' into staging

MIPS patches 2016-07-12

Changes:
* support 10-bit ASIDs
* MIPS64R6-generic renamed to I6400
* initial GIC support
* implement RESET_BASE register in CM GCR

# gpg: Signature made Tue 12 Jul 2016 11:49:50 BST
# gpg:                using RSA key 0x52118E3C0B29DA6B
# gpg: Good signature from "Leon Alrae <leon.alrae@imgtec.com>"
# Primary key fingerprint: 8DD3 2F98 5495 9D66 35D4  4FC0 5211 8E3C 0B29 DA6B

* remotes/lalrae/tags/mips-20160712:
  target-mips: enable 10-bit ASIDs in I6400 CPU
  target-mips: support CP0.Config4.AE bit
  target-mips: change ASID type to hold more than 8 bits
  target-mips: add ASID mask field and replace magic values
  target-mips: replace MIPS64R6-generic with the real I6400 CPU model
  hw/mips_cmgcr: implement RESET_BASE register in CM GCR
  hw/mips_cpc: make VP correctly start from the reset vector
  target-mips: add exception base to MIPS CPU
  hw/mips/cps: create GIC block inside CPS
  hw/mips: implement Global Interrupt Controller
  hw/mips: implement GIC Interval Timer

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-07-12 12:34:41 +01:00
Leon Alrae
c09199fe73 hw/mips_cmgcr: implement RESET_BASE register in CM GCR
Implement RESET_BASE register which is local to each VP and a write to
it changes VP's reset exception base. Also, add OTHER register to
allow a software running on one VP to access other VP's local registers.

Guest can use this mechanism to specify custom address from which a VP
will start execution.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-07-12 09:10:16 +01:00
Leon Alrae
dff94251f0 hw/mips_cpc: make VP correctly start from the reset vector
When VP enters the Run state it starts execution from the reset vector.
Currently used CPU_INTERRUPT_WAKE does not do that if reset exception
base has been modified. Therefore fix that by simply resetting given VP.

Drop the usage of CPU_INTERRUPT_WAKE also in VP_STOP and instead raise
the CPU_INTERRUPT_HALT to halt a VP.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-07-12 09:10:15 +01:00
Leon Alrae
19494f811a hw/mips/cps: create GIC block inside CPS
Add GIC to CPS and expose its interrupt pins instead of CPU's.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-07-12 09:10:13 +01:00
Jean-Christophe Dubois
66542f6399 i.MX: split the GPT timer implementation into per SOC definitions
In various Freescale SOCs, the GPT timers can be configured to select
its input clock.

Depending on the SOC the set of available input clocks may vary.

The actual single GPT definition was no good enough and because of it
booting the sabrelite board with a i.MX6DL device tree would fail
because of an incorrect input clock definition for the i.MX6DL SOC.

This patch fixes the i.MX6DL boot failure by adding the ability to
define a different set of input clocks depending on the considered SOC.

A different class has been defined for i.MX25, i.MX31 and i.MX6 each with
its specific set of input clocks.

The patch has been tested by booting KZM, i.MX25 PDK, i.MX6Q sabrelite
and i.MX6DL sabrelite.

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Message-id: 1467325619-8374-1-git-send-email-jcd@tribudubois.net
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: fixed spacing round '/' operator]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-07-07 13:47:01 +01:00
Peter Maydell
e0dadc1e9e aux: Rename aux.[ch] to auxbus.[ch] for the benefit of Windows
On Windows 'aux.*' is a reserved name and cannot be used for
filenames; see
  https://msdn.microsoft.com/en-gb/library/windows/desktop/aa365247(v=vs.85).aspx

This prevents cloning the QEMU git repo on Windows:

C:\Java\sources\kvm> git clone https://github.com/qemu/qemu.git
Cloning into 'qemu'...
remote: Counting objects: 279563, done.
remote: Total 279563 (delta 0), reused 0 (delta 0), pack-reused 279563R
Receiving objects: 100% (279563/279563), 122.45 MiB | 3.52 MiB/s, done.
Resolving deltas: 100% (221942/221942), done.
Checking connectivity... done.
error: unable to create file hw/misc/aux.c (No such file or directory)
error: unable to create file include/hw/misc/aux.h (No such file or directory)
Checking out files: 100% (4795/4795), done.
fatal: unable to checkout working tree
warning: Clone succeeded, but checkout failed.
You can inspect what was checked out with 'git status'
and retry the checkout with 'git checkout -f HEAD'

(bug https://bugs.launchpad.net/bugs/1595240)

Rename the offending files for the benefit of Windows.

Reported-by: Алексей Курган <akurgan@yandex.ru>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Wei Huang <wei@redhat.com>
Tested-by: KONRAD Frederic <fred.konrad@greensocs.com>
Message-id: 1467377145-32385-1-git-send-email-peter.maydell@linaro.org
2016-07-07 13:47:01 +01:00
Paolo Bonzini
5229f45bd9 aux: fix break that wanted to break two levels out
The last "ret = AUX_I2C_NACK;" is dead, because it is always overridden
by AUX_I2C_ACK.  What really the code wants is to jump out of the switch
statement, and a "return" will not cut it because it would omit a debug
printf.

Change the logic so that we can break out of the while loop.  For clarity,
hoist the bus->last_* assignments up, right after i2c_start_transfer.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-07-07 13:47:00 +01:00
Cédric Le Goater
7673bb4cd3 ssi: change ssi_slave_init to be a realize ops
This enables qemu to handle late inits and report errors. All the SSI
slave routine names were changed accordingly. Code was modified to
handle errors when possible (m25p80 and ssi-sd)

Tested with the m25p80 slave object.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-id: 1467138270-32481-2-git-send-email-clg@kaod.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-07-04 13:15:22 +01:00
Peter Maydell
1ec20c2a3a * serial port fixes (Paolo)
* Q35 modeling improvements (Paolo, Vasily)
 * chardev cleanup improvements (Marc-André)
 * iscsi bugfix (Peter L.)
 * cpu_exec patch from multi-arch patches (Peter C.)
 * pci-assign tweak (Lin Ma)
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* serial port fixes (Paolo)
* Q35 modeling improvements (Paolo, Vasily)
* chardev cleanup improvements (Marc-André)
* iscsi bugfix (Peter L.)
* cpu_exec patch from multi-arch patches (Peter C.)
* pci-assign tweak (Lin Ma)

# gpg: Signature made Wed 29 Jun 2016 15:56:30 BST
# gpg:                using RSA key 0xBFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (35 commits)
  socket: unlink unix socket on remove
  socket: add listen feature
  char: clean up remaining chardevs when leaving
  vhost-user: disable chardev handlers on close
  vhost-user-test: fix g_cond_wait_until compat implementation
  vl: smp_parse: fix regression
  ich9: implement SCI_IRQ_SEL register
  ich9: implement ACPI_EN register
  serial: reinstate watch after migration
  serial: remove watch on reset
  char: change qemu_chr_fe_add_watch to return unsigned
  serial: separate serial_xmit and serial_watch_cb
  serial: simplify tsr_retry reset
  serial: make tsr_retry unsigned
  iscsi: fix assertion in is_sector_request_lun_aligned
  target-*: Don't redefine cpu_exec()
  pci-assign: Move "Invalid ROM" error message to pci-assign-load-rom.c
  vnc: generalize "VNC server running on ..." message
  scsi: esp: fix migration
  MC146818 RTC: add GPIO access to output IRQ
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-06-29 19:14:48 +01:00
Efimov Vasily
936a6447c8 vmport: identify vmport type by macro TYPE_VMPORT
Currently vmport device is identified by the string literal. Using a
preprocessor alias instead is preferable.

Signed-off-by: Efimov Vasily <real@ispras.ru>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-06-29 14:03:45 +02:00
Pranith Kumar
aa4b04a09c misc/aspeed_scu: Fix build error caused by missing header
Tracing configurations error out currently as follows:

/home/travis/build/pranith/qemu/hw/misc/aspeed_scu.c: In function ‘aspeed_scu_read’:
/home/travis/build/pranith/qemu/hw/misc/aspeed_scu.c:130:9: error: implicit declaration of function ‘qemu_log_mask’ [-Werror=implicit-function-declaration]
/home/travis/build/pranith/qemu/hw/misc/aspeed_scu.c:130:9: error: nested extern declaration of ‘qemu_log_mask’ [-Werror=nested-externs]
/home/travis/build/pranith/qemu/hw/misc/aspeed_scu.c:130:23: error: ‘LOG_GUEST_ERROR’ undeclared (first use in this function)
/home/travis/build/pranith/qemu/hw/misc/aspeed_scu.c:130:23: note: each undeclared identifier is reported only once for each function it appears in
/home/travis/build/pranith/qemu/hw/misc/aspeed_scu.c: In function ‘aspeed_scu_write’:
/home/travis/build/pranith/qemu/hw/misc/aspeed_scu.c:154:23: error: ‘LOG_GUEST_ERROR’ undeclared (first use in this function)

This is caused by a missing header file. Fix it.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Message-id: 20160627215304.821-1-bobby.prani@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-06-28 09:41:30 +01:00
Andrew Jeffery
1c8a2388aa hw/misc: Add a model for the ASPEED System Control Unit
The SCU is a collection of chip-level control registers that manage the
various functions supported by ASPEED SoCs. Typically the bits control
interactions with clocks, external hardware or reset behaviour, and we
can largly take a hands-off approach to reads and writes.

Firmware makes heavy use of the state to determine how to boot, but the
reset values vary from SoC to SoC (eg AST2400 vs AST2500). A qdev
property is exposed so that the integrating SoC model can configure the
silicon revision, which in-turn selects the appropriate reset values.
Further qdev properties are exposed so the board model can configure the
board-dependent hardware strapping.

Almost all provided AST2400 reset values are specified by the datasheet.
The notable exception is SOC_SCRATCH1, where we mark the DRAM as
successfully initialised to avoid unnecessary dark corners in the SoC's
u-boot support.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Message-id: 1466744305-23163-2-git-send-email-andrew@aj.id.au
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: drop unnecessary inttypes.h include]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-06-27 15:37:33 +01:00
Peter Maydell
b0ad00b8c9 -----BEGIN PGP SIGNATURE-----
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Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging

# gpg: Signature made Mon 20 Jun 2016 21:29:27 BST
# gpg:                using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/tracing-pull-request: (42 commits)
  trace: split out trace events for linux-user/ directory
  trace: split out trace events for qom/ directory
  trace: split out trace events for target-ppc/ directory
  trace: split out trace events for target-s390x/ directory
  trace: split out trace events for target-sparc/ directory
  trace: split out trace events for net/ directory
  trace: split out trace events for audio/ directory
  trace: split out trace events for ui/ directory
  trace: split out trace events for hw/alpha/ directory
  trace: split out trace events for hw/arm/ directory
  trace: split out trace events for hw/acpi/ directory
  trace: split out trace events for hw/vfio/ directory
  trace: split out trace events for hw/s390x/ directory
  trace: split out trace events for hw/pci/ directory
  trace: split out trace events for hw/ppc/ directory
  trace: split out trace events for hw/9pfs/ directory
  trace: split out trace events for hw/i386/ directory
  trace: split out trace events for hw/isa/ directory
  trace: split out trace events for hw/sd/ directory
  trace: split out trace events for hw/sparc/ directory
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-06-20 22:30:34 +01:00
Daniel P. Berrange
6b5bacf6af trace: split out trace events for hw/misc/ directory
Move all trace-events for files in the hw/misc/ directory to
their own file.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 1466066426-16657-14-git-send-email-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-06-20 17:22:15 +01:00
Michael Walle
6dbbe24337 milkymist: update specification URLs
The old milkymist.org domain just forwards to mm-labs.hk nowadays. I've
created a mirror of the documents.

Signed-off-by: Michael Walle <michael@walle.cc>
2016-06-20 18:12:04 +02:00
Paolo Bonzini
02d0e09503 os-posix: include sys/mman.h
qemu/osdep.h checks whether MAP_ANONYMOUS is defined, but this check
is bogus without a previous inclusion of sys/mman.h.  Include it in
sysemu/os-posix.h and remove it from everywhere else.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-06-16 18:39:03 +02:00
KONRAD Frederic
6fc7f77fd2 introduce aux-bus
This introduces a new bus: aux-bus.

It contains an address space for aux slaves devices and a bridge to an I2C bus
for I2C through AUX transactions.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Tested-By: Hyun Kwon <hyun.kwon@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 1465833014-21982-5-git-send-email-fred.konrad@greensocs.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-06-14 15:59:15 +01:00
xiaoqiang zhao
e2d4f17e55 hw/misc: QOM'ify mst_fpga.c
Drop the old SysBus init function and use instance_init

Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 1465815255-21776-11-git-send-email-zxq_yx_007@163.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-06-14 15:59:14 +01:00
xiaoqiang zhao
b4ebbab9a1 hw/misc: QOM'ify exynos4210_pmu.c
Drop the old SysBus init function and use instance_init

Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 1465815255-21776-10-git-send-email-zxq_yx_007@163.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-06-14 15:59:14 +01:00
xiaoqiang zhao
da8060bfc0 hw/misc: QOM'ify arm_l2x0.c
Drop the old SysBus init function and use instance_init

Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 1465815255-21776-9-git-send-email-zxq_yx_007@163.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-06-14 15:59:14 +01:00
Mark Cave-Ayland
8865588133 dbdma: use DMA memory interface for memory accesses
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-06-07 10:17:45 +10:00
Paolo Bonzini
4ff87573df memory: remove qemu_get_ram_fd, qemu_set_ram_fd, qemu_ram_block_host_ptr
Remove direct uses of ram_addr_t and optimize memory_region_{get,set}_fd
now that a MemoryRegion knows its RAMBlock directly.

Reviewed-by: Marc-André Lureau <marcandre.lureau@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-05-29 09:11:12 +02:00
Paolo Bonzini
63c915526d cpu: move exec-all.h inclusion out of cpu.h
exec-all.h contains TCG-specific definitions.  It is not needed outside
TCG-specific files such as translate.c, exec.c or *helper.c.

One generic function had snuck into include/exec/exec-all.h; move it to
include/qom/cpu.h.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-05-19 16:42:29 +02:00
Paolo Bonzini
03dd024ff5 hw: explicitly include qemu/log.h
Move the inclusion out of hw/hw.h, most files do not need it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-05-19 16:42:29 +02:00
Paolo Bonzini
33c11879fd qemu-common: push cpu.h inclusion out of qemu-common.h
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-05-19 16:42:29 +02:00
Paolo Bonzini
77ac58ddc6 dma: do not depend on kvm_enabled()
Memory barriers are needed also by Xen and, when the ioeventfd
bugs are fixed, by TCG as well.

sysemu/kvm.h is not anymore needed in sysemu/dma.h, move it to
the actual users.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-05-19 16:42:28 +02:00
Jean-Christophe DUBOIS
1983057470 i.MX: Add i.MX6 System Reset Controller device.
This controller is also present in i.MX5X devices but they are not
yet emulated by QEMU.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-05-12 13:22:28 +01:00
Sylvain Garrigues
27a5dc7be6 bcm2835_property: use cached values when querying framebuffer
As the framebuffer settings are copied into the result message before it is
reconfigured, inconsistent behavior can happen when, for instance, you set with
a single message the width, height, and depth, and ask at the same time to
allocate the buffer and get the pitch and the size.

In this case, the reported pitch and size would be incorrect as they were
computed with the initial values of width, height and depth, not the ones the
client requested.

Signed-off-by: Sylvain Garrigues <sylvain@sylvaingarrigues.com>
Reviewed-by: Andrew Baumann <Andrew.Baumann@microsoft.com>
Message-id: 1461325343-24995-1-git-send-email-sylvain@sylvaingarrigues.com
[PMM: folded a couple of long lines]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-05-12 13:22:25 +01:00
Aurelien Jarno
ed3d807b0a cuda: fix off-by-one error in SET_TIME command
With the new framework the cuda_cmd_set_time command directly receive
the data, without the command byte. Therefore the time is stored at
in_data[0], not at in_data[1].

This fixes the "hwclock --systohc" command in a guest.

Cc: Hervé Poussineau <hpoussin@reactos.org>
Cc: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Hervé Poussineau <hpoussin@reactos.org>
[this fixes a regression introduced by e647317 "cuda: port SET_TIME
 command to new framework"]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-04-19 11:39:23 +10:00
Marc-André Lureau
6dc64780c2 ivshmem: fix ivshmem-{plain,doorbell} crash without arg
"qemu -device ivshmem-{plain,doorbell}" will crash, because the device
doesn't check that the required argument is provided. (screwed up in
commit 5400c02)

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
2016-04-13 12:01:47 +02:00
Peter Maydell
9628af036f MIPS patches 2016-04-08
Changes:
 * fix off-by-one error in ITU
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Merge remote-tracking branch 'remotes/lalrae/tags/mips-20160408' into staging

MIPS patches 2016-04-08

Changes:
* fix off-by-one error in ITU

# gpg: Signature made Fri 08 Apr 2016 10:43:16 BST using RSA key ID 0B29DA6B
# gpg: Good signature from "Leon Alrae <leon.alrae@imgtec.com>"

* remotes/lalrae/tags/mips-20160408:
  hw/mips_itu: fix off-by-one reported by Coverity

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-04-08 13:45:52 +01:00
Leon Alrae
f2eb665a11 hw/mips_itu: fix off-by-one reported by Coverity
Fix off-by-one error in ITC Tag read.

Remove the switch as we just want to check if index is in valid range
rather than test against list of values.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-04-08 09:19:26 +01:00
Michael S. Tsirkin
45aa4e8e39 pci-testdev: fast mmio support
Teach PCI testdev to use fast MMIO when kvm makes it available.

Before:
    mmio-wildcard-eventfd:pci-mem 2271
After:
    mmio-wildcard-eventfd:pci-mem 1218

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-04-07 19:57:33 +03:00
Leon Alrae
25a611e3e4 hw/mips: implement ITC Storage - Bypass View
Bypass View does not cause issuing thread to block and does not affect
any of the cells state bit.

Read from a FIFO cell returns the value of the oldest entry.
Store to a FIFO cell changes the value of the newest entry.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
40dc9dc339 hw/mips: implement ITC Storage - P/V Sync and Try Views
P/V Synchronized and Try Views can be used to access Semaphore cells.
Load returns current value and post-decrements the value in the cell
(until it reaches zero). Stores increment the value (until it saturates
at 0xFFFF).

P/V Synchronized View causes the issuing thread to block on read if value
is 0. P/V Try View does not block the thread, it returns 0 in this case.

Cell's Empty and Full bits are not modified.

Trap bit (i.e. Gating Storage exceptions) not implemented.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
4051089d61 hw/mips: implement ITC Storage - Empty/Full Sync and Try Views
Empty/Full Synchronized and Try views can be used to access FIFO cells.
Store to the FIFO cell pushes the value into the queue, load pops the oldest
element from the queue. Cell's Full and Empty bits are automatically updated
to reflect new state of the cell.

Empty/Full Synchronized View causes the issuing thread to block when FIFO is
empty while thread is performing a read, or FIFO is full while thread is
performing a write.

Empty/Full Try View never blocks the thread. If cell is full then write is
ignored, if cell is empty then load returns 0.

Trap bit (i.e. Gating Storage exceptions) not implemented.
Store Conditional support for E/F Try View (i.e. indicate failure if FIFO
is full) not implemented.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
5924c869c0 hw/mips: implement ITC Storage - Control View
Control view is used to access the ITC Storage Cell Tags. It never causes
the issuing thread to block.

Guest can empty the FIFO cell by setting Empty bit to 1.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
34fa7e83e1 hw/mips: implement ITC Configuration Tags and Storage Cells
Implement ITC as a single object consisting of two memory regions:

1) tag_io: ITC Configuration Tags (i.e. ITCAddressMap{0,1} registers) which
are accessible by the CPU via CACHE instruction. Also adding
MemoryRegion *itc_tag to the CPUMIPSState so that CACHE instruction will
dispatch reads/writes directly.

2) storage_io: memory-mapped ITC Storage whose address space is configurable
(i.e. enabled/remapped/resized) by writing to ITCAddressMap{0,1} registers.

ITC Storage contains FIFO and Semaphore cells. Read-only FIFO bit in the
ITC cell tag indicates the type of the cell. If the ITC Storage contains
both types of cells then FIFOs are located before Semaphores.

Since issuing thread can get blocked on the access to a cell (in E/F
Synchronized and P/V Synchronized Views) each cell has a bitmap to track
which threads are currently blocked.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
2edd5261ff hw/mips/cps: create CPC block inside CPS
Create Cluster Power Controller and add a link to the CPC MemoryRegion
in GCR. Guest can enable / map CPC to any physical address by writing to
the memory-mapped GCR_CPC_BASE register.

Set vp-start-reset property to 1 to allow only first VP to run from reset.
Others are brought up by the guest via CPC memory-mapped registers.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
1f93a6e4f3 hw/mips: add initial Cluster Power Controller support
Cluster Power Controller (CPC) is responsible for power management in
multiprocessing system. It provides registers to control the power and the
clock frequency of the individual elements in the system.

This patch implements only three registers that are used to control the
power state of each VP on a single core:
* VP Run is a write-only register used to set each VP to the run state
* VP Stop is a write-only register used to set each VP to the suspend state
* VP Running is a read-only register indicating the run state of each VP

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Yongbok Kim
3994215db4 hw/mips: add initial Global Config Register support
Add initial GCR support to indicate number of VPs present in the system,
L2 bypass mode and revision number.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
[leon.alrae@imgtec.com:
 * removed GIC part,
 * changed commit message,
 * replaced %lx format spec. with PRIx64,
 * renamed mips_gcr.{c,h} to mips_cmgcr.{c,h},
 * replaced CONFIG_MIPS_GIC with CONFIG_MIPS_CPS]
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Peter Maydell
84a5a80148 * Log filtering from Alex and Peter
* Chardev fix from Marc-André
 * config.status tweak from David
 * Header file tweaks from Markus, myself and Veronia (Outreachy candidate)
 * get_ticks_per_sec() removal from Rutuja (Outreachy candidate)
 * Coverity fix from myself
 * PKE implementation from myself, based on rth's XSAVE support
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* Log filtering from Alex and Peter
* Chardev fix from Marc-André
* config.status tweak from David
* Header file tweaks from Markus, myself and Veronia (Outreachy candidate)
* get_ticks_per_sec() removal from Rutuja (Outreachy candidate)
* Coverity fix from myself
* PKE implementation from myself, based on rth's XSAVE support

# gpg: Signature made Thu 24 Mar 2016 20:15:11 GMT using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"

* remotes/bonzini/tags/for-upstream: (28 commits)
  target-i386: implement PKE for TCG
  config.status: Pass extra parameters
  char: translate from QIOChannel error to errno
  exec: fix error handling in file_ram_alloc
  cputlb: modernise the debug support
  qemu-log: support simple pid substitution for logs
  target-arm: dfilter support for in_asm
  qemu-log: dfilter-ise exec, out_asm, op and opt_op
  qemu-log: new option -dfilter to limit output
  qemu-log: Improve the "exec" TB execution logging
  qemu-log: Avoid function call for disabled qemu_log_mask logging
  qemu-log: correct help text for -d cpu
  tcg: pass down TranslationBlock to tcg_code_gen
  util: move declarations out of qemu-common.h
  Replaced get_tick_per_sec() by NANOSECONDS_PER_SECOND
  hw: explicitly include qemu-common.h and cpu.h
  include/crypto: Include qapi-types.h or qemu/bswap.h instead of qemu-common.h
  isa: Move DMA_transfer_handler from qemu-common.h to hw/isa/isa.h
  Move ParallelIOArg from qemu-common.h to sysemu/char.h
  Move QEMU_ALIGN_*() from qemu-common.h to qemu/osdep.h
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Conflicts:
	scripts/clean-includes
2016-03-24 21:42:40 +00:00
Veronia Bahaa
f348b6d1a5 util: move declarations out of qemu-common.h
Move declarations out of qemu-common.h for functions declared in
utils/ files: e.g. include/qemu/path.h for utils/path.c.
Move inline functions out of qemu-common.h and into new files (e.g.
include/qemu/bcd.h)

Signed-off-by: Veronia Bahaa <veroniabahaa@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:17 +01:00
Rutuja Shah
73bcb24d93 Replaced get_tick_per_sec() by NANOSECONDS_PER_SECOND
This patch replaces get_ticks_per_sec() calls with the macro
NANOSECONDS_PER_SECOND. Also, as there are no callers, get_ticks_per_sec()
is then removed.  This replacement improves the readability and
understandability of code.

For example,

    timer_mod(fdctrl->result_timer,
	      qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + (get_ticks_per_sec() / 50));

NANOSECONDS_PER_SECOND makes it obvious that qemu_clock_get_ns
matches the unit of the expression on the right side of the plus.

Signed-off-by: Rutuja Shah <rutu.shah.26@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:17 +01:00
Markus Armbruster
0137fdc094 include/hw/hw.h: Don't include qemu-common.h
qemu-common.h should only be included by .c files.  Its file comment
explains why: "No header file should depend on qemu-common.h, as this
would easily lead to circular header dependencies."

hw/hw.h includes qemu-common.h, but its users generally need only
hw_error() and qemu/module.h from it.  Move the former to hw/hw.h,
include the latter there, and drop the ill-advised include.
hw/misc/cbus.c now misses hw_error(), so include hw/hw.h there.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:16 +01:00
Markus Armbruster
da34e65cb4 include/qemu/osdep.h: Don't include qapi/error.h
Commit 57cb38b included qapi/error.h into qemu/osdep.h to get the
Error typedef.  Since then, we've moved to include qemu/osdep.h
everywhere.  Its file comment explains: "To avoid getting into
possible circular include dependencies, this file should not include
any other QEMU headers, with the exceptions of config-host.h,
compiler.h, os-posix.h and os-win32.h, all of which are doing a
similar job to this file and are under similar constraints."
qapi/error.h doesn't do a similar job, and it doesn't adhere to
similar constraints: it includes qapi-types.h.  That's in excess of
100KiB of crap most .c files don't actually need.

Add the typedef to qemu/typedefs.h, and include that instead of
qapi/error.h.  Include qapi/error.h in .c files that need it and don't
get it now.  Include qapi-types.h in qom/object.h for uint16List.

Update scripts/clean-includes accordingly.  Update it further to match
reality: replace config.h by config-target.h, add sysemu/os-posix.h,
sysemu/os-win32.h.  Update the list of includes in the qemu/osdep.h
comment quoted above similarly.

This reduces the number of objects depending on qapi/error.h from "all
of them" to less than a third.  Unfortunately, the number depending on
qapi-types.h shrinks only a little.  More work is needed for that one.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
[Fix compilation without the spice devel packages. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:15 +01:00
Markus Armbruster
62a830b688 ivshmem: Require master to have ID zero
Migration with ivshmem needs to be carefully orchestrated to work.
Exactly one peer (the "master") migrates to the destination, all other
peers need to unplug (and disconnect), migrate, plug back (and
reconnect).  This is sort of documented in qemu-doc.

If peers connect on the destination before migration completes, the
shared memory can get messed up.  This isn't documented anywhere.  Fix
that in qemu-doc.

To avoid messing up register IVPosition on migration, the server must
assign the same ID on source and destination.  ivshmem-spec.txt leaves
ID assignment unspecified, however.

Amend ivshmem-spec.txt to require the first client to receive ID zero.
The example ivshmem-server complies: it always assigns the first
unused ID.

For a bit of additional safety, enforce ID zero for the master.  This
does nothing when we're not using a server, because the ID is zero for
all peers then.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-40-git-send-email-armbru@redhat.com>
2016-03-21 21:29:03 +01:00
Markus Armbruster
13fd2cb689 ivshmem: Drop ivshmem property x-memdev
Use ivshmem-plain instead.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-39-git-send-email-armbru@redhat.com>
2016-03-21 21:29:03 +01:00
Markus Armbruster
ddc8528443 ivshmem: Clean up after the previous commit
Move code to more sensible places.  Use the opportunity to reorder and
document IVShmemState members.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-38-git-send-email-armbru@redhat.com>
2016-03-21 21:29:03 +01:00
Markus Armbruster
5400c02b90 ivshmem: Split ivshmem-plain, ivshmem-doorbell off ivshmem
ivshmem can be configured with and without interrupt capability
(a.k.a. "doorbell").  The two configurations have largely disjoint
options, which makes for a confusing (and badly checked) user
interface.  Moreover, the device can't tell the guest whether its
doorbell is enabled.

Create two new device models ivshmem-plain and ivshmem-doorbell, and
deprecate the old one.

Changes from ivshmem:

* PCI revision is 1 instead of 0.  The new revision is fully backwards
  compatible for guests.  Guests may elect to require at least
  revision 1 to make sure they're not exposed to the funny "no shared
  memory, yet" state.

* Property "role" replaced by "master".  role=master becomes
  master=on, role=peer becomes master=off.  Default is off instead of
  auto.

* Property "use64" is gone.  The new devices always have 64 bit BARs.

Changes from ivshmem to ivshmem-plain:

* The Interrupt Pin register in PCI config space is zero (does not use
  an interrupt pin) instead of one (uses INTA).

* Property "x-memdev" is renamed to "memdev".

* Properties "shm" and "size" are gone.  Use property "memdev"
  instead.

* Property "msi" is gone.  The new device can't have MSI-X capability.
  It can't interrupt anyway.

* Properties "ioeventfd" and "vectors" are gone.  They're meaningless
  without interrupts anyway.

Changes from ivshmem to ivshmem-doorbell:

* Property "msi" is gone.  The new device always has MSI-X capability.

* Property "ioeventfd" defaults to on instead of off.

* Property "size" is gone.  The new device can only map all the shared
  memory received from the server.

Guests can easily find out whether the device is configured for
interrupts by checking for MSI-X capability.

Note: some code added in sub-optimal places to make the diff easier to
review.  The next commit will move it to more sensible places.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-37-git-send-email-armbru@redhat.com>
2016-03-21 21:29:03 +01:00
Markus Armbruster
2a845da736 ivshmem: Replace int role_val by OnOffAuto master
In preparation of making it a qdev property.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-36-git-send-email-armbru@redhat.com>
2016-03-21 21:29:02 +01:00
Markus Armbruster
8baeb22bfc ivshmem: Inline check_shm_size() into its only caller
Improve the error messages while there.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1458066895-20632-34-git-send-email-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2016-03-21 21:29:02 +01:00
Markus Armbruster
c2d8019cd7 ivshmem: Simplify memory regions for BAR 2 (shared memory)
ivshmem_realize() puts the shared memory region in a container region.
Used to be necessary to permit delayed mapping of the shared memory.
However, we recently moved to synchronous mapping, in "ivshmem:
Receive shared memory synchronously in realize()" and the commit
following it.  The container is redundant since then.  Drop it.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1458066895-20632-33-git-send-email-armbru@redhat.com>
2016-03-21 21:29:02 +01:00
Markus Armbruster
5503e28504 ivshmem: Implement shm=... with a memory backend
ivshmem has its very own code to create and map shared memory.
Replace that with an implicitly created memory backend.  Reduces the
number of ways we create BAR 2 from three to two.

The memory-backend-file is currently available only with CONFIG_LINUX,
so this adds a second Linuxism to ivshmem (the other one is eventfd).
Should we ever need to make it portable to systems where
memory-backend-file can't be made to serve, we could create a
memory-backend-shmem that allocates memory with shm_open().

Bonus fix: shared memory files are now created with permissions 0655
instead of 0777.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1458066895-20632-32-git-send-email-armbru@redhat.com>
2016-03-21 21:29:02 +01:00
Markus Armbruster
08183c20b8 ivshmem: Tighten check of property "size"
If size_t is narrower than 64 bits, passing uint64_t ivshmem_size to
mmap() truncates.  Reject such sizes.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-31-git-send-email-armbru@redhat.com>
2016-03-21 21:29:02 +01:00
Markus Armbruster
ee276391a3 ivshmem: Simplify how we cope with short reads from server
Short reads from a UNIX domain sockets are exceedingly unlikely when
the other side always sends eight bytes and we always read eight
bytes.  We cope with them anyway.  However, the code doing that is
rather convoluted.  Dumb it down radically.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-30-git-send-email-armbru@redhat.com>
2016-03-21 21:29:01 +01:00
Markus Armbruster
ba5970a178 ivshmem: Drop the hackish test for UNIX domain chardev
The chardev must be capable of transmitting SCM_RIGHTS ancillary
messages.  We check it by comparing CharDriverState member filename to
"unix:".  That's almost as brittle as it is disgusting.

When the actual transmission all happened asynchronously, this check
was all we could do in realize(), and thus better than nothing.  But
now we receive at least one SCM_RIGHTS synchronously in realize(),
it's not worth its keep anymore.  Drop it.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-29-git-send-email-armbru@redhat.com>
2016-03-21 21:29:01 +01:00
Markus Armbruster
a3feb08639 ivshmem: Rely on server sending the ID right after the version
The protocol specification (ivshmem-spec.txt, formerly
ivshmem_device_spec.txt) has always required the ID message to be sent
right at the beginning, and ivshmem-server has always complied.  The
device, however, accepts it out of order.  If an interrupt setup
arrived before it, though, it would be misinterpreted as connect
notification.  Fix the latent bug by relying on the spec and
ivshmem-server's actual behavior.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-28-git-send-email-armbru@redhat.com>
2016-03-21 21:29:01 +01:00
Markus Armbruster
1309cf448a ivshmem: Propagate errors through ivshmem_recv_setup()
This kills off the funny state described in the previous commit.

Simplify ivshmem_io_read() accordingly, and update documentation.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1458066895-20632-27-git-send-email-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2016-03-21 21:29:01 +01:00
Markus Armbruster
3a55fc0f24 ivshmem: Receive shared memory synchronously in realize()
When configured for interrupts (property "chardev" given), we receive
the shared memory from an ivshmem server.  We do so asynchronously
after realize() completes, by setting up callbacks with
qemu_chr_add_handlers().

Keeping server I/O out of realize() that way avoids delays due to a
slow server.  This is probably relevant only for hot plug.

However, this funny "no shared memory, yet" state of the device also
causes a raft of issues that are hard or impossible to work around:

* The guest is exposed to this state: when we enter and leave it its
  shared memory contents is apruptly replaced, and device register
  IVPosition changes.

  This is a known issue.  We document that guests should not access
  the shared memory after device initialization until the IVPosition
  register becomes non-negative.

  For cold plug, the funny state is unlikely to be visible in
  practice, because we normally receive the shared memory long before
  the guest gets around to mess with the device.

  For hot plug, the timing is tighter, but the relative slowness of
  PCI device configuration has a good chance to hide the funny state.

  In either case, guests complying with the documented procedure are
  safe.

* Migration becomes racy.

  If migration completes before the shared memory setup completes on
  the source, shared memory contents is silently lost.  Fortunately,
  migration is rather unlikely to win this race.

  If the shared memory's ramblock arrives at the destination before
  shared memory setup completes, migration fails.

  There is no known way for a management application to wait for
  shared memory setup to complete.

  All you can do is retry failed migration.  You can improve your
  chances by leaving more time between running the destination QEMU
  and the migrate command.

  To mitigate silent memory loss, you need to ensure the server
  initializes shared memory exactly the same on source and
  destination.

  These issues are entirely undocumented so far.

I'd expect the server to be almost always fast enough to hide these
issues.  But then rare catastrophic races are in a way the worst kind.

This is way more trouble than I'm willing to take from any device.
Kill the funny state by receiving shared memory synchronously in
realize().  If your hot plug hangs, go kill your ivshmem server.

For easier review, this commit only makes the receive synchronous, it
doesn't add the necessary error propagation.  Without that, the funny
state persists.  The next commit will do that, and kill it off for
real.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-26-git-send-email-armbru@redhat.com>
2016-03-21 21:29:01 +01:00
Markus Armbruster
9db51b4d64 ivshmem: Plug leaks on unplug, fix peer disconnect
close_peer_eventfds() cleans up three things: ioeventfd triggers if
they exist, eventfds, and the array to store them.

Commit 98609cd (v1.2.0) fixed it not to clean up ioeventfd triggers
when they don't exist (property ioeventfd=off, which is the default).
Unfortunately, the fix also made it skip cleanup of the eventfds and
the array then.  This is a memory and file descriptor leak on unplug.

Additionally, the reset of nb_eventfds is skipped.  Doesn't matter on
unplug.  On peer disconnect, however, this permanently wedges the
interrupt vectors used for that peer's ID.  The eventfds stay behind,
but aren't connected to a peer anymore.  When the ID gets recycled for
a new peer, the new peer's eventfds get assigned to vectors after the
old ones.  Commonly, the device's number of vectors matches the
server's, so the new ones get dropped with a "Too many eventfd
received" message.  Interrupts either don't work (common case) or go
to the wrong vector.

Fix by narrowing the conditional to just the ioeventfd trigger
cleanup.

While there, move the "invalid" peer check to the only caller where it
can actually happen, and tighten it to reject own ID.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-25-git-send-email-armbru@redhat.com>
2016-03-21 21:29:01 +01:00
Markus Armbruster
ca0b7566cc ivshmem: Disentangle ivshmem_read()
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-24-git-send-email-armbru@redhat.com>
2016-03-21 21:29:01 +01:00
Markus Armbruster
cd9953f720 ivshmem: Simplify rejection of invalid peer ID from server
ivshmem_read() processes server messages.  These are 64 bit signed
integers.  -1 is shared memory setup, 16 bit unsigned is a peer ID,
anything else is invalid.

ivshmem_read() rejects invalid negative messages right away, silently.

Invalid positive messages get rejected only in resize_peers(), and
ivshmem_read() then prints the rather cryptic message "failed to
resize peers array".

Extend the first check to cover all invalid messages, make it report
"server sent invalid message", and drop the second check.

Now resize_peers() can't fail anymore; simplify.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-23-git-send-email-armbru@redhat.com>
2016-03-21 21:29:01 +01:00
Markus Armbruster
3c27969b3e ivshmem: Assert interrupts are set up once
An interrupt is set up when the interrupt's file descriptor is
received.  Each message applies to the next interrupt vector.
Therefore, each vector cannot be set up more than once.

ivshmem_add_kvm_msi_virq() half-heartedly tries not to rely on this by
doing nothing then, but that's not going to recover from this error
should it become possible in the future.  watch_vector_notifier()
doesn't even try.

Simply assert what is the case, so we get alerted if we ever screw it
up.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-22-git-send-email-armbru@redhat.com>
2016-03-21 21:29:01 +01:00
Markus Armbruster
2d1d422d11 ivshmem: Leave INTx alone when using MSI-X
The ivshmem device can either use MSI-X or legacy INTx for interrupts.

With MSI-X enabled, peer interrupt events trigger an MSI as they
should.  But software can still raise INTx via interrupt status and
mask register in BAR 0.  This is explicitly prohibited by PCI Local
Bus Specification Revision 3.0, section 6.8.3.3:

    While enabled for MSI or MSI-X operation, a function is prohibited
    from using its INTx# pin (if implemented) to request service (MSI,
    MSI-X, and INTx# are mutually exclusive).

Fix the device model to leave INTx alone when using MSI-X.

Document that we claim to use INTx in config space even when we don't.
Unlike other devices, ivshmem does *not* use INTx when configured for
MSI-X and MSI-X isn't enabled by software.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1458066895-20632-21-git-send-email-armbru@redhat.com>
2016-03-21 21:29:01 +01:00
Markus Armbruster
082751e82b ivshmem: Clean up MSI-X conditions
There are three predicates related to MSI-X:

* ivshmem_has_feature(s, IVSHMEM_MSI) is true unless the non-MSI-X
  variant of the device is selected with msi=off.

* msix_present() is true when the device has the PCI capability MSI-X.
  It's initially false, and becomes true during successful realize of
  the MSI-X variant of the device.  Thus, it's the same as
  ivshmem_has_feature(s, IVSHMEM_MSI) for realized devices.

* msix_enabled() is true when msix_present() is true and guest software
  has enabled MSI-X.

Code that differs between the non-MSI-X and the MSI-X variant of the
device needs to be guarded by ivshmem_has_feature(s, IVSHMEM_MSI) or
by msix_present(), except the latter works only for realized devices.

Code that depends on whether MSI-X is in use needs to be guarded with
msix_enabled().

Code review led me to two minor messes:

* ivshmem_vector_notify() calls msix_notify() even when
  !msix_enabled(), unlike most other MSI-X-capable devices.  As far as
  I can tell, msix_notify() does nothing when !msix_enabled().  Add
  the guard anyway.

* Most callers of ivshmem_use_msix() guard it with
  ivshmem_has_feature(s, IVSHMEM_MSI).  Not necessary, because
  ivshmem_use_msix() does nothing when !msix_present().  That's
  ivshmem's only use of msix_present(), though.  Guard it
  consistently, and drop the now redundant msix_present() check.
  While there, rename ivshmem_use_msix() to ivshmem_msix_vector_use().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1458066895-20632-20-git-send-email-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2016-03-21 21:29:00 +01:00
Markus Armbruster
434ad76db5 ivshmem: Clean up register callbacks
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-19-git-send-email-armbru@redhat.com>
2016-03-21 21:29:00 +01:00
Markus Armbruster
d855e27565 ivshmem: Failed realize() can leave migration blocker behind
If pci_ivshmem_realize() fails after it created its migration blocker,
the blocker is left in place.  Fix that by creating it last.

Likewise, if it fails after it called fifo8_create(), it leaks fifo
memory.  Fix that the same way.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-18-git-send-email-armbru@redhat.com>
2016-03-21 21:29:00 +01:00
Markus Armbruster
9cf70c5225 ivshmem: Fix harmless misuse of Error
We reuse errp after passing it host_memory_backend_get_memory().  If
both host_memory_backend_get_memory() and the reuse set an error, the
reuse will fail the assertion in error_setv().  Fortunately,
host_memory_backend_get_memory() can't fail.

Pass it &error_abort to make our assumption explicit, and to get the
assertion failure in the right place should it become invalid.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-17-git-send-email-armbru@redhat.com>
2016-03-21 21:29:00 +01:00
Markus Armbruster
71c265816d ivshmem: Don't destroy the chardev on version mismatch
Yes, the chardev is commonly useless after we read a bad version from
it, but destroying it is inappropriate anyway: the user created it, so
the user should be able to hold on to it as long as he likes.  We
don't destroy it on other errors.  Screwed up in commit 5105b1d.

Stop reading instead.

Also note QEMU's behavior in ivshmem-spec.txt.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-16-git-send-email-armbru@redhat.com>
2016-03-21 21:29:00 +01:00
Markus Armbruster
c20fc0c3ee ivshmem: Drop ivshmem_event() stub
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-15-git-send-email-armbru@redhat.com>
2016-03-21 21:29:00 +01:00
Markus Armbruster
e64befe929 ivshmem: Clean up after commit 9940c32
IVShmemState member eventfd_chr is useless since commit 9940c32.  Drop
it.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-14-git-send-email-armbru@redhat.com>
2016-03-21 21:29:00 +01:00
Markus Armbruster
a4fa93bf20 ivshmem: Compile debug prints unconditionally to prevent bit-rot
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-13-git-send-email-armbru@redhat.com>
2016-03-21 21:29:00 +01:00
Markus Armbruster
97553976dd ivshmem: Add missing newlines to debug printfs
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1458066895-20632-12-git-send-email-armbru@redhat.com>
2016-03-21 21:29:00 +01:00
Grégory ESTRADE
355a8ccc5c bcm2835_property: implement framebuffer control/configuration properties
The property channel driver now interfaces with the framebuffer device
to query and set framebuffer parameters. As a result of this, the "get
ARM RAM size" query now correctly returns the video RAM base address
(not total RAM size), and the ram-size property is no longer relevant
here.

Signed-off-by: Grégory ESTRADE <gregory.estrade@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com>
Message-id: 1457467526-8840-5-git-send-email-Andrew.Baumann@microsoft.com
[AB: cleanup/refactoring for upstream submission]
Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-16 17:42:18 +00:00
Jean-Christophe Dubois
a66d815cd5 i.MX: Add i.MX6 CCM and ANALOG device.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Message-id: 9fa80b4d8c5d0f50c94e77d74f952a7a665e168f.1456868959.git.jcd@tribudubois.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-16 17:42:18 +00:00
Jean-Christophe Dubois
d552f675fb i.MX: Add the CLK_IPG_HIGH clock
EPIT, GPT and other i.MX timers are using "abstract" clocks among which
a CLK_IPG_HIGH clock.

On i.MX25 and i.MX31 CLK_IPG and CLK_IPG_HIGH are mapped to the same clock
but on other SOC like i.MX6 they are mapped to distinct clocks.

This patch add the CLK_IPG_HIGH to prepare for SOC where these 2 clocks are
different.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Message-id: 224bf650194760284cb40630e985867e1373276a.1456868959.git.jcd@tribudubois.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-16 17:42:18 +00:00
Jean-Christophe Dubois
f4b2add6cc i.MX: Remove CCM useless clock computation handling.
Most clocks supported by the CCM are useless to the qemu framework.

Only clocks related to timers (EPIT, GPT, PWM, WATCHDOG, ...) are usefull
to QEMU code.

Therefore this patch removes clock computation handling for all clocks but:
* CLK_NONE,
* CLK_IPG,
* CLK_32k

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Message-id: 9e7222efb349801032e60c0f6b0fbad0e5dcf648.1456868959.git.jcd@tribudubois.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-16 17:42:18 +00:00
Jean-Christophe Dubois
c91a5883c3 i.MX: Rename CCM NOCLK to CLK_NONE for naming consistency.
This way all CCM clock defines/enums are named CLK_XXX

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Message-id: 8537df765c1713625c7a8b9aca4c7ca60b42e0c0.1456868959.git.jcd@tribudubois.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-16 17:42:18 +00:00
Fam Zheng
8e41fb63c5 memory: Drop MemoryRegion.ram_addr
All references to mr->ram_addr are replaced by
memory_region_get_ram_addr(mr) (except for a few assertions that are
replaced with mr->ram_block).

Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1456813104-25902-5-git-send-email-famz@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07 13:26:29 +01:00
Andrew Baumann
eab713941a bcm2835_mbox/property: replace ldl_phys/stl_phys with endian-specific accesses
PMM pointed out that ldl_phys and stl_phys are dependent on the CPU's
endianness, whereas device model code should be independent of
it. This changes the relevant Raspberry Pi devices to explicitly call
the little-endian variants.

Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com>
Message-id: 1456880233-22568-1-git-send-email-Andrew.Baumann@microsoft.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04 11:30:18 +00:00
Hervé Poussineau
2d7d06d847 dbdma: warn when using unassigned channel
With this, it's easier to know if a guest uses an invalid and/or unimplemented
DMA channel.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-02-28 16:19:02 +11:00
Hervé Poussineau
e4d162d72f cuda: remove CUDA_GET_SET_IIC/CUDA_COMBINED_FORMAT_IIC commands
We currently don't emulate the I2C bus provided by CUDA.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-02-17 09:59:31 +11:00
Hervé Poussineau
e230d43e80 cuda: remove GET_6805_ADDR command
It doesn't seem to be used, and operating systems should accept a 'unknown command' answer.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-02-17 09:59:31 +11:00
Hervé Poussineau
e647317892 cuda: port SET_TIME command to new framework
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-02-17 09:59:31 +11:00
Hervé Poussineau
547a4d1969 cuda: port GET_TIME command to new framework
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-02-17 09:59:31 +11:00
Hervé Poussineau
15b7b09b1d cuda: port SET_POWER_MESSAGES command to new framework
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-02-17 09:59:31 +11:00
Hervé Poussineau
f5b941120e cuda: port FILE_SERVER_FLAG command to new framework
This command tells if computer should automatically wake-up after a power loss.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-02-17 09:59:30 +11:00
Hervé Poussineau
54e894442e cuda: port RESET_SYSTEM command to new framework
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-02-17 09:59:30 +11:00
Hervé Poussineau
017da0b568 cuda: port POWERDOWN command to new framework
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-02-17 09:59:30 +11:00
Hervé Poussineau
216c906e62 cuda: port SET_DEVICE_LIST command to new framework
Also implement the command, by taking device list mask into account
when polling ADB devices.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-02-17 09:59:30 +11:00
Hervé Poussineau
374312e7c5 cuda: port SET_AUTO_RATE command to new framework
Also implement the command, by removing the hardcoded period of 20 ms/50 Hz
and replacing it by the one requested by user.
Update VMState version to store this new parameter.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-02-17 09:59:30 +11:00
Hervé Poussineau
1cdab10446 cuda: port AUTOPOLL command to new framework
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-02-17 09:59:30 +11:00
Hervé Poussineau
0e8176e809 cuda: move unknown commands reject out of switch
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-02-17 09:59:30 +11:00