Commit Graph

28 Commits

Author SHA1 Message Date
Philippe Mathieu-Daudé a50fe66846 hw/timer/exynos4210_mct: Replace hw_error() by qemu_log_mask()
hw_error() calls exit(). This a bit overkill when we can log
the accesses as unimplemented or guest error.

When fuzzing the devices, we don't want the whole process to
exit. Replace some hw_error() calls by qemu_log_mask().

Per the datasheet "Exynos 4412 RISC Microprocessor Rev 1.00"
Chapter 25 "Multi Core Timer (MCT)" figure 1 and table 4,
the default value on the APB bus is 0.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20200518140309.5220-5-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-21 22:05:27 +01:00
Chen Qun 237d8f0963 timer/exynos4210_mct: Remove redundant statement in exynos4210_mct_write()
Clang static code analyzer show warning:
hw/timer/exynos4210_mct.c:1370:9: warning: Value stored to 'index' is never read
        index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
        ^       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
hw/timer/exynos4210_mct.c:1399:9: warning: Value stored to 'index' is never read
        index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
        ^       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
hw/timer/exynos4210_mct.c:1441:9: warning: Value stored to 'index' is never read
        index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
        ^       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200325025919.21316-4-kuhn.chenqun@huawei.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-05-04 11:17:27 +02:00
Guenter Roeck 1a391e20c3 hw/timer/exynos4210_mct: Initialize ptimer before starting it
When booting a recent Linux kernel, the qemu message "Timer with delta
zero, disabling" is seen, apparently because a ptimer is started before
being initialized.  Fix the problem by initializing the offending ptimer
before starting it.

The bug is effectively harmless in the old QEMUBH setup
because the sequence of events is:
 * the delta zero means the timer expires immediately
 * ptimer_reload() arranges for exynos4210_gfrc_event() to be called
 * ptimer_reload() notices the zero delta and disables the timer
 * later, the QEMUBH runs, and exynos4210_gfrc_event() correctly
   configures the timer and restarts it

In the new transaction based API the bug is still harmless,
but differences of when the callback function runs mean the
message is not printed any more:
 * ptimer_run() does nothing as it's inside a transaction block
 * ptimer_transaction_commit() sees it has work to do and
   calls ptimer_reload()
 * the zero delta means the timer expires immediately
 * ptimer_reload() calls exynos4210_gfrc_event() directly
 * exynos4210_gfrc_event() configures the timer
 * the delta is no longer zero so ptimer_reload() doesn't complain
   (the zero-delta test is after the trigger-callback in
   the ptimer_reload() function)

Regardless, the behaviour here was not intentional, and we should
just program the ptimer correctly to start with.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20191018143149.9216-1-peter.maydell@linaro.org
[PMM: Expansion/clarification of the commit message:
 the message is about a zero delta, not a zero period;
 added detail to the commit message of the analysis of what
 is happening and why the kernel boots even with the message;
 added note that the message goes away with the new ptimer API]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-10-22 17:44:00 +01:00
Peter Maydell 6c27ee94f3 hw/timer/exynos4210_mct.c: Switch ltick to transaction-based ptimer API
Switch the ltick ptimer over to the ptimer transaction API.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191008171740.9679-14-peter.maydell@linaro.org
2019-10-15 18:09:02 +01:00
Peter Maydell 50f07d76f4 hw/timer/exynos4210_mct.c: Switch LFRC to transaction-based ptimer API
Switch the exynos MCT LFRC timers over to the ptimer transaction API.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191008171740.9679-13-peter.maydell@linaro.org
2019-10-15 18:09:02 +01:00
Peter Maydell 9ede4ec094 hw/timer/exynos4210_mct.c: Switch GFRC to transaction-based ptimer API
We want to switch the exynos MCT code away from bottom-half based ptimers to
the new transaction-based ptimer API. The MCT is complicated
and uses multiple different ptimers, so it's clearer to switch
it a piece at a time. Here we change over only the GFRC.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191008171740.9679-12-peter.maydell@linaro.org
2019-10-15 18:09:02 +01:00
Peter Maydell b01422622b ptimer: Rename ptimer_init() to ptimer_init_with_bh()
Currently the ptimer design uses a QEMU bottom-half as its
mechanism for calling back into the device model using the
ptimer when the timer has expired. Unfortunately this design
is fatally flawed, because it means that there is a lag
between the ptimer updating its own state and the device
callback function updating device state, and guest accesses
to device registers between the two can return inconsistent
device state.

We want to replace the bottom-half design with one where
the guest device's callback is called either immediately
(when the ptimer triggers by timeout) or when the device
model code closes a transaction-begin/end section (when the
ptimer triggers because the device model changed the
ptimer's count value or other state). As the first step,
rename ptimer_init() to ptimer_init_with_bh(), to free up
the ptimer_init() name for the new API. We can then convert
all the ptimer users away from ptimer_init_with_bh() before
removing it entirely.

(Commit created with
 git grep -l ptimer_init | xargs sed -i -e 's/ptimer_init/ptimer_init_with_bh/'
and three overlong lines folded by hand.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191008171740.9679-2-peter.maydell@linaro.org
2019-10-15 18:09:02 +01:00
Markus Armbruster a27bd6c779 Include hw/qdev-properties.h less
In my "build everything" tree, changing hw/qdev-properties.h triggers
a recompile of some 2700 out of 6600 objects (not counting tests and
objects that don't depend on qemu/osdep.h).

Many places including hw/qdev-properties.h (directly or via hw/qdev.h)
actually need only hw/qdev-core.h.  Include hw/qdev-core.h there
instead.

hw/qdev.h is actually pointless: all it does is include hw/qdev-core.h
and hw/qdev-properties.h, which in turn includes hw/qdev-core.h.
Replace the remaining uses of hw/qdev.h by hw/qdev-properties.h.

While there, delete a few superfluous inclusions of hw/qdev-core.h.

Touching hw/qdev-properties.h now recompiles some 1200 objects.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Daniel P. Berrangé" <berrange@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20190812052359.30071-22-armbru@redhat.com>
2019-08-16 13:31:53 +02:00
Markus Armbruster 650d103d3e Include hw/hw.h exactly where needed
In my "build everything" tree, changing hw/hw.h triggers a recompile
of some 2600 out of 6600 objects (not counting tests and objects that
don't depend on qemu/osdep.h).

The previous commits have left only the declaration of hw_error() in
hw/hw.h.  This permits dropping most of its inclusions.  Touching it
now recompiles less than 200 objects.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20190812052359.30071-19-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-08-16 13:31:52 +02:00
Markus Armbruster d645427057 Include migration/vmstate.h less
In my "build everything" tree, changing migration/vmstate.h triggers a
recompile of some 2700 out of 6600 objects (not counting tests and
objects that don't depend on qemu/osdep.h).

hw/hw.h supposedly includes it for convenience.  Several other headers
include it just to get VMStateDescription.  The previous commit made
that unnecessary.

Include migration/vmstate.h only where it's still needed.  Touching it
now recompiles only some 1600 objects.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20190812052359.30071-16-armbru@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-08-16 13:31:52 +02:00
Markus Armbruster 64552b6be4 Include hw/irq.h a lot less
In my "build everything" tree, changing hw/irq.h triggers a recompile
of some 5400 out of 6600 objects (not counting tests and objects that
don't depend on qemu/osdep.h).

hw/hw.h supposedly includes it for convenience.  Several other headers
include it just to get qemu_irq and.or qemu_irq_handler.

Move the qemu_irq and qemu_irq_handler typedefs from hw/irq.h to
qemu/typedefs.h, and then include hw/irq.h only where it's still
needed.  Touching it now recompiles only some 500 objects.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190812052359.30071-13-armbru@redhat.com>
2019-08-16 13:31:52 +02:00
Markus Armbruster 0b8fa32f55 Include qemu/module.h where needed, drop it from qemu-common.h
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190523143508.25387-4-armbru@redhat.com>
[Rebased with conflicts resolved automatically, except for
hw/usb/dev-hub.c hw/misc/exynos4210_rng.c hw/misc/bcm2835_rng.c
hw/misc/aspeed_scu.c hw/display/virtio-vga.c hw/arm/stm32f205_soc.c;
ui/cocoa.m fixed up]
2019-06-12 13:18:33 +02:00
Krzysztof Kozlowski 986924f875 hw/timer/exynos4210_mct: Remove unused defines
Remove defines not used anywhere.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-06-13 14:56:57 +01:00
Krzysztof Kozlowski 54ab9927d1 hw/timer/exynos4210_mct: Cleanup indentation and empty new lines
Statements under 'case' were in some places wrongly indented bringing
confusion and making the code less readable.  Remove also few unneeded
blank lines.  No functional changes.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-06-13 14:56:57 +01:00
Krzysztof Kozlowski 92e5d7e222 hw/timer/exynos4210_mct: Fix checkpatch style errors
Fix checkpatch errors:
1. ERROR: spaces required around that '+' (ctx:VxV)
2. ERROR: spaces required around that '&' (ctx:VxV)

No functional changes.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-06-13 14:56:56 +01:00
Krzysztof Kozlowski f2ad5140fa hw/arm/exynos: Convert fprintf to qemu_log_mask/error_report
qemu_log_mask() and error_report() are preferred over fprintf() for
logging errors.  Also remove square brackets [] and additional new line
characters in printed messages.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20170313184750.429-2-krzk@kernel.org
[PMM: wrapped long line]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-04-20 17:39:17 +01:00
Dmitry Osipenko e7ea81c37d hw/ptimer: Introduce timer policy feature
Some of the timer devices may behave differently from what ptimer
provides. Introduce ptimer policy feature that allows ptimer users to
change default and wrong timer behaviour, for example to continuously
trigger periodic timer when load value is equal to "0".

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Message-id: 994cd608ec392da6e58f0643800dda595edb9d97.1473252818.git.digetx@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-09-22 18:13:06 +01:00
xiaoqiang.zhao 7a53a140f0 hw/timer: QOM'ify exynos4210_mct
assign exynos4210_mct_init to exynos4210_mct_info.instance_init
and drop the SysBusDeviceClass::init

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-18 14:50:50 +00:00
Peter Maydell 8ef94f0bc9 arm: Clean up includes
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1453832250-766-13-git-send-email-peter.maydell@linaro.org
2016-01-29 15:07:23 +00:00
Peter Maydell c3a699be3c hw/timer/exynos4210_mct: Avoid overflow in exynos4210_ltick_recalc_count
Add casts to avoid potentially overflowing the multiplications
of 32 bit quantities in exynos4210_ltick_recalc_count().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-05-13 16:09:39 +01:00
Juan Quintela 8f1e884b38 savevm: Remove all the unneeded version_minimum_id_old (arm)
After commit 767adce2d, they are redundant.  This way we don't assign them
except when needed.  Once there, there were lots of cases where the ".fields"
indentation was wrong:

     .fields = (VMStateField []) {
and
     .fields =      (VMStateField []) {

Change all the combinations to:

     .fields = (VMStateField[]){

The biggest problem (apart from aesthetics) was that checkpatch complained
when we copy&pasted the code from one place to another.

Signed-off-by: Juan Quintela <quintela@redhat.com>
[PMM: fixed minor conflict, corrected commit message typos]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-13 16:09:35 +01:00
Alex Bligh bc72ad6754 aio / timers: Switch entire codebase to the new timer API
This is an autogenerated patch using scripts/switch-timer-api.

Switch the entire code base to using the new timer API.

Note this patch may introduce some line length issues.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-08-22 19:14:24 +02:00
Alex Bligh 6a1751b7aa aio / timers: Untangle include files
include/qemu/timer.h has no need to include main-loop.h and
doing so causes an issue for the next patch. Unfortunately
various files assume including timers.h will pull in main-loop.h.
Untangle this mess.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-08-22 19:10:27 +02:00
Andreas Färber 81e1010d0f exynos4210_mct: QOM cast cleanup
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-29 21:07:01 +02:00
Paolo Bonzini 853dca1205 hw/t*: pass owner to memory_region_init* functions
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-07-04 17:42:48 +02:00
Paolo Bonzini 2c9b15cab1 memory: add owner argument to initialization functions
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-07-04 17:42:44 +02:00
Stefan Weil 6681fca3fc Remove unnecessary break statements
Fix these warnings from cppcheck:

hw/display/cirrus_vga.c:2603:
hw/sd/sd.c:348:
hw/timer/exynos4210_mct.c:1033:
target-arm/translate.c:9886:
target-s390x/mem_helper.c:518:
target-unicore32/translate.c:1936:
 style: Consecutive return, break, continue, goto or throw statements are unnecessary.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-06-01 14:25:38 +04:00
Paolo Bonzini 3bd884511f hw: move timer devices to hw/timer/, configure with default-configs/
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08 18:13:14 +02:00