Commit Graph

40 Commits

Author SHA1 Message Date
Peter Maydell
e3d0814368 hw: Use device_class_set_legacy_reset() instead of opencoding
Use device_class_set_legacy_reset() instead of opencoding an
assignment to DeviceClass::reset. This change was produced
with:
 spatch --macro-file scripts/cocci-macro-file.h \
    --sp-file scripts/coccinelle/device-reset.cocci \
    --keep-comments --smpl-spacing --in-place --dir hw

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240830145812.1967042-8-peter.maydell@linaro.org
2024-09-13 15:31:44 +01:00
Richard Henderson
ba324b3fb4 hw/timer: Constify VMState
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20231221031652.119827-57-richard.henderson@linaro.org>
2023-12-30 07:38:06 +11:00
Axel Heider
25d758175d hw/timer/imx_epit: fix limit check
Fix the limit check. If the limit is less than the compare value,
the timer can never reach this value, thus it will never fire.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1491
Signed-off-by: Axel Heider <axel.heider@hensoldt.net>
Message-id: 168070611775.20412.2883242077302841473-2@git.sr.ht
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-04-20 10:21:14 +01:00
Axel Heider
542fd43d79 hw/timer/imx_epit: don't shadow variable
Fix issue reported by Coverity.

Signed-off-by: Axel Heider <axel.heider@hensoldt.net>
Message-id: 168070611775.20412.2883242077302841473-1@git.sr.ht
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-04-20 10:21:14 +01:00
Axel Heider
8d71beaf1e hw/timer/imx_epit: fix compare timer handling
- fix #1263 for CR writes
- rework compare time handling
  - The compare timer has to run even if CR.OCIEN is not set,
    as SR.OCIF must be updated.
  - The compare timer fires exactly once when the
    compare value is less than the current value, but the
    reload values is less than the compare value.
  - The compare timer will never fire if the reload value is
    less than the compare value. Disable it in this case.

Signed-off-by: Axel Heider <axel.heider@hensoldt.net>
[PMM: fixed minor style nits]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-01-05 12:14:43 +00:00
Axel Heider
e662449aa6 hw/timer/imx_epit: remove explicit fields cnt and freq
The CNT register is a read-only register. There is no need to
store it's value, it can be calculated on demand.
The calculated frequency is needed temporarily only.

Note that this is a migration compatibility break for all boards
types that use the EPIT peripheral.

Signed-off-by: Axel Heider <axel.heider@hensoldt.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-01-05 12:14:43 +00:00
Axel Heider
793a6ea075 hw/timer/imx_epit: factor out register write handlers
Signed-off-by: Axel Heider <axel.heider@hensoldt.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-01-05 12:14:43 +00:00
Axel Heider
3d46158125 hw/timer/imx_epit: hard reset initializes CR with 0
Signed-off-by: Axel Heider <axel.heider@hensoldt.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-01-05 12:14:43 +00:00
Axel Heider
2ca267fd36 hw/timer/imx_epit: update interrupt state on CR write access
The interrupt state can change due to:
- reset clears both SR.OCIF and CR.OCIE
- write to CR.EN or CR.OCIE

Signed-off-by: Axel Heider <axel.heider@hensoldt.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-01-05 12:14:43 +00:00
Axel Heider
1ead962edf hw/timer/imx_epit: define SR_OCIF
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-01-05 12:14:43 +00:00
Axel Heider
018ee7948f hw/timer/imx_epit: cleanup CR defines
remove unused defines, add needed defines

Signed-off-by: Axel Heider <axel.heider@hensoldt.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-01-05 12:14:43 +00:00
Axel Heider
b9c993aaf8 hw/timer/imx_epit: improve comments
Fix typos, add background information

Signed-off-by: Axel Heider <axel.heider@hensoldt.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-01-05 12:14:43 +00:00
Axel Heider
7719419deb target/imx: reload cmp timer outside of the reload ptimer transaction
When running seL4 tests (https://docs.sel4.systems/projects/sel4test)
on the sabrelight platform, the timer tests fail. The arm/imx6 EPIT
timer interrupt does not fire properly, instead of a e.g. second in
can take up to a minute to finally see the interrupt.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1263

Signed-off-by: Axel Heider <axel.heider@hensoldt.net>
Message-id: 166663118138.13362.1229967229046092876-0@git.sr.ht
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-10-27 10:27:23 +01:00
Peter Maydell
9598c1bb39 ptimer: Rename PTIMER_POLICY_DEFAULT to PTIMER_POLICY_LEGACY
The traditional ptimer behaviour includes a collection of weird edge
case behaviours.  In 2016 we improved the ptimer implementation to
fix these and generally make the behaviour more flexible, with
ptimers opting in to the new behaviour by passing an appropriate set
of policy flags to ptimer_init().  For backwards-compatibility, we
defined PTIMER_POLICY_DEFAULT (which sets no flags) to give the old
weird behaviour.

This turns out to be a poor choice of name, because people writing
new devices which use ptimers are misled into thinking that the
default is probably a sensible choice of flags, when in fact it is
almost always not what you want.  Rename PTIMER_POLICY_DEFAULT to
PTIMER_POLICY_LEGACY and beef up the comment to more clearly say that
new devices should not be using it.

The code-change part of this commit was produced by
  sed -i -e 's/PTIMER_POLICY_DEFAULT/PTIMER_POLICY_LEGACY/g' $(git grep -l PTIMER_POLICY_DEFAULT)
with the exception of a test name string change in
tests/unit/ptimer-test.c which was added manually.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Francisco Iglesias <francisco.iglesias@amd.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220516103058.162280-1-peter.maydell@linaro.org
2022-05-19 16:19:03 +01:00
Peter Maydell
13557fd392 hw/timer/imx_epit: Avoid assertion when CR.SWR is written
The imx_epit device has a software-controllable reset triggered by
setting the SWR bit in the CR register. An error in commit cc2722ec83
means that we will end up assert()ing if the guest does this, because
the code in imx_epit_write() starts ptimer transactions, and then
imx_epit_reset() also starts ptimer transactions, triggering
"ptimer_transaction_begin: Assertion `!s->in_transaction' failed".

The cleanest way to avoid this double-transaction is to move the
start-transaction for the CR write handling down below the check of
the SWR bit.

Fixes: https://bugs.launchpad.net/qemu/+bug/1880424
Fixes: cc2722ec83
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200727154550.3409-1-peter.maydell@linaro.org
2020-08-03 17:56:11 +01:00
Peter Maydell
cc2722ec83 hw/timer/imx_epit.c: Switch to transaction-based ptimer API
Switch the imx_epit.c code away from bottom-half based ptimers to
the new transaction-based ptimer API.  This just requires adding
begin/commit calls around the various places that modify the ptimer
state, and using the new ptimer_init() function to create the timer.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191008171740.9679-18-peter.maydell@linaro.org
2019-10-15 18:09:03 +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
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
Peter Maydell
d675765a02 imx: Use 'const char', not 'char const'
'char const' means the same thing as 'const char', but we
use the former in only a handful of places and we use the
latter over six thousand times. Switch the imx reg_name()
functions to bring them in line with everything else.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-09-22 18:13:09 +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
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
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
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
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
Jean-Christophe Dubois
aaa9ec3b4d i.MX: rename i.MX CCM get_clock() function and CLK ID enum names
This is to prepare for CCM code refactoring.

This is just a bit of function and enum values renaming.

We also remove some useless intermediate variables.

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 53c4d9b9611988a5f56f178f285e04490747925e.1449528242.git.jcd@tribudubois.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-12-17 13:37:15 +00:00
Jean-Christophe Dubois
4929f6563c i.MX: Standardize i.MX EPIT debug
The goal is to have debug code always compiled during build.

We standardize all debug output on the following format:

[QOM_TYPE_NAME]reporting_function: debug message

We also replace IPRINTF with qemu_log_mask(). The qemu_log_mask() output
is following the same format as the above debug.

Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Message-id: 5bbad71517ca728d8865f7b9f998baa0df022794.1445781957.git.jcd@tribudubois.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-10-27 15:59:46 +00:00
Jean-Christophe Dubois
f044ac4980 i.MX: KZM: use standalone i.MX31 SOC support
Convert the KZM board to use the i.MX31 SoC defintition instead of
redefining the entire SoC on the machine level. Major rewrite of the
machine init code.

While touching the memory map comment de-indent to the correct level
of indentation.

This obsoletes the legacy i.MX device device creation helpers which are removed.

Tested by booting a minimal Linux system on the emulated platform

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 5e783561f092e1c939562fdff001f1ab1194b07f.1441057361.git.jcd@tribudubois.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-09-07 10:39:30 +01:00
Jean-Christophe Dubois
565328fcc3 i.MX: Fix Coding style for EPIT emulator
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: d8d70683c6a48ac318c1635595619cfb0eb31681.1437080501.git.jcd@tribudubois.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-08-13 11:26:20 +01:00
Jean-Christophe Dubois
951cd00e92 i.MX: Split EPIT emulator in a header file and a source file
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 948927cab0c85da9a753c5f6d5501323d5604c8e.1437080501.git.jcd@tribudubois.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-08-13 11:26:20 +01:00
Michael Tokarev
203d65a470 hw/timer/imx_*: fix TIMER_MAX clash with system symbol
The symbol TIMER_MAX used in imx_epit.c and imx_gpt.c
clashes with system symbol with the same name.  Because
all qemu source files includes qemu-common.h which, in
turn, includes limits.h, which is not unusual to define
it.  Rename local symbol to have a reasonable prefix.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-08-09 00:06:32 +04:00
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
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
Peter Chubb
230058106a hw/timer/imx_epit: Simplify and fix imx_epit implementation
When imx_epit.c was last refactored, a common usecase (comparison
register zero) broke.  This patch fixes that, and simplifies the code
yet more.  It also fixes a major thinko in the reset path --- the
wrong bits in the control register were being cleared.

Signed-off-by: Peter Chubb <peter.chubb@nicta.com.au>
Reviewed-by: Jean-Christophe DUBOIS <jcd@tribudubois.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-08-20 14:54:32 +01:00
Peter Maydell
6783ecf144 hw: Avoid use of QOM type name macros in VMStateDescriptions
The name field in a VMStateDescription is part of the migration state
versioning, so changing it will break migration.  It's therefore a
bad idea to use a QOM typename macro to initialize it, because in
general we're free to rename QOM types as part of code refactoring
and cleanup.  For the handful of devices that were doing this by
mistake, replace the QOM typenames with the corresponding literal
strings.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
[AF: Use TYPE_PVSCSI for TypeInfo instead]
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23 00:37:32 +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
Jean-Christophe DUBOIS
95669e6984 i.MX: Improve EPIT timer code.
* Unify function and type naming
* use dynamic cast whenever possible
* simplify Debug printf.
* use new style device intialization.

Signed-off-by: Jean-Christophe DUBOIS <jcd@tribudubois.net>
Reviewed-by: Peter Chubb <peter.chubb@nicta.com.au>
Message-id: 1369839656-24466-1-git-send-email-jcd@tribudubois.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-06-03 17:17:46 +01:00
Jean-Christophe DUBOIS
a50c0d6f72 i.MX: split GPT and EPIT timer implementation
There is no common code between these 2 timer implementation.
So it is better to split them.

Signed-off-by: Jean-Christophe DUBOIS <jcd@tribudubois.net>
Message-id: 1368990197-19694-1-git-send-email-jcd@tribudubois.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-06-03 17:17:45 +01:00