Add tickless kernel support. Sets timer always in one
shot mode to the time the kernel scheduler needs the
next timer event. Uses mili seconds as the scheduling
time unit.
Jira: ZEP-1817
Change-Id: Ia2e63711cdd9d7d9c241b9ff08a606aa79575012
Signed-off-by: Ramesh Thomas <ramesh.thomas@intel.com>
Convert code to use u{8,16,32,64}_t and s{8,16,32,64}_t instead of C99
integer types. This handles the remaining includes and kernel, plus
touching up various points that we skipped because of include
dependancies. We also convert the PRI printf formatters in the arch
code over to normal formatters.
Jira: ZEP-2051
Change-Id: Iecbb12601a3ee4ea936fd7ddea37788a645b08b0
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Convert code to use u{8,16,32,64}_t and s{8,16,32,64}_t instead of C99
integer types.
Jira: ZEP-2051
Change-Id: I08f51e2bfd475f6245771c1bd2df7ffc744c48c4
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
CONFIG_* usually come from Kconfig, rename variables that are locally
defined to avoid confusion about where they are set.
Change-Id: I83b8459913c5deb68dc1b9f5386b8934363a6d1f
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
It's possible the timer interrupt could occur when performing the
computation, resulting in incorrect values returned.
It's still possible for bad values to be returned if the function is
called with interrupts locked, but that is only fixable with a second
timer source.
Issue: ZEP-1546
Change-Id: I16d5b04c3e32377f7249eb4fb1bf2f7c22bd0836
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Some arches may want to define this as an inline function, or
define in core arch code instead of timer driver code.
Unfortunately, this means we need to remove from the footprint
tests, but this is not typically a large function.
Issue: ZEP-1546
Change-Id: Ic0d7a33507da855995838f4703d872cd613a2ca2
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Replace the existing Apache 2.0 boilerplate header with an SPDX tag
throughout the zephyr code tree. This patch was generated via a
script run over the master branch.
Also updated doc/porting/application.rst that had a dependency on
line numbers in a literal include.
Manually updated subsys/logging/sys_log.c that had a malformed
header in the original file. Also cleanup several cases that already
had a SPDX tag and we either got a duplicate or missed updating.
Jira: ZEP-1457
Change-Id: I6131a1d4ee0e58f5b938300c2d2fc77d2e69572c
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Force-align all variables defined via asm .word to ensure 4-byte
alignment.
The straddled_tick_on_idle_enter variable was a bool, which resolved in
an one-byte quantity. Changing it to a 32-bit integer. It would have
occupied 4 bytes anyway with alignment.
Fixes ZEP-1549.
Change-Id: If5e0aa1a75dbc73d896b44616f059d221fe191c6
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
When going into DEEP_SLEEP state, the ARC timer
needs to be restored.
This implements the function to restore the timer
after sleep.
As the time spent during sleep is not currently known,
the timer is expired to reschedule the application task.
Jira: ZEP-1224
Change-Id: I22a30d0fd79f177cf166b9a29dc78d68f7d7fbad
Signed-off-by: Julien Delayen <julien.delayen@intel.com>
This commit replaces the nanokernel.h include by kernel.h.
Change-Id: Ib42fbf2d9f77a73c0831f569b3dbbfb342ea2e1d
Signed-off-by: Flavio Santes <flavio.santes@intel.com>
Defined in all SoCs, but never referenced anywhere. That definition has
been replaced by CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC.
Change-Id: I1801f72a03925717ded6fbfdef22b1993f843461
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
A previous re-work of IRQ priorities was led astray by an incorrect
comment. Priority level 1 is not a non-maskable interrupt priority.
In addition, zero latency IRQs are not implemented on ARC.
Timer driver now doesn't specify IRQ_ZERO_LATENCY (as that wouldn't be
correct) and its IRQ priority is now tunable in Kconfig. The default is 0.
IPM driver on both ARC and x86 side were being configured with hard-coded
priority of 2, which wasn't valid for ARC and caused an assertion failure.
The priority level is now tunable with Kconfig and defaults to 1 for ARC.
Issue: ZEP-693
Change-Id: If76dbfee214be7630d787be0bce4549a1ecbcb5b
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
We have already done this on x86 and ARM. The policy is as follows:
* IRQ priority levels starting at 0 all have the same semantics and
do not have special properties. The priority level is either ignored
on arches which do not support programmable priority levels, or lower
priority levels take precedence over higher ones.
* Special-case priorty levels are specified via flags, in which case
the supplied priority level is ignored.
Issue: ZEP-60
Change-Id: Ic603f49299ee1426fb9350ca29d0b8ef96a1d53a
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Building microkernel for ARC causes a compiler error
due to missing declaration of _sys_idle_elapsed_ticks.
Declare this as extern.
Jira: ZEP-397
Change-Id: I83701f693fea0fcb1ae2c30e0c52abe7987de1f1
Signed-off-by: Ramesh Thomas <ramesh.thomas@intel.com>
The timer implementation for ARC currently requires timer0 to be present.
I've added a comment that this is an assumption and to encourage developers
to build the ARC CPU with Timer0, when it is to be used with Zephyr.
There is also an optional provision for a Timer1. In future, this
code could be conditional to use either timer.
Change-Id: I4eb3aec59ba4e85f8b70d5531b21bdaab00b93bb
Signed-off-by: Chuck Jordan <cjordan@synopsys.com>
ASSERT are put each time the timer0 limit register or the timer0 count register
is modified.
Change-Id: I38684d57803de285f4e26c68b449c71396e4c750
Signed-off-by: Simon Desfarges <simon.desfarges@intel.com>
When exiting from tickless idle uppon an external IRQ, the TICK timer
is set to fire at next TICK boundary. The current algorithm can lead
to a point that timer0_count register is higher than the timer0_limit
register.
In this situation the next TICK will fire after the counter has
wrapped and performed another cycle (~133 seconds).
This condition appears when the counter reaches the limit after the
Interrupt Pending flag is checked. At this point the counter is
automatically wrapped to 0, but is set just next to the limit to fire
at next TICK boundary by SW. At exit of the _timer_idle_exit function,
the timer handler is called, and sets the limit to 1 TICK. At this
point the situation is:
- limit register == 1 TICK
- count register is just below the old limit register and higher than
1 TICK
To fix this issue, at _timer_idle_exit, the limit register is always
set to 1 TICK and the count register set such as the next TICK fires
on time.
Change-Id: Ifa002809d426aa04109592e53d2b02a224f51101
Signed-off-by: Simon Desfarges <simon.desfarges@intel.com>
The timer counts from 0 to programmed_limit included.
Change-Id: Ifc8585210c319f5452fafc911d4f6d72c4b91eaa
Signed-off-by: Simon Desfarges <simon.desfarges@intel.com>
It's not a function and requires all its arguments to be build-time
constants. Make this more obvious to the end user to ease confusion.
Change-Id: I64107cf4d9db9f0e853026ce78e477060570fe6f
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
The interrupt API has been redesigned:
- irq_connect() for dynamic interrupts renamed to irq_connect_dynamic().
It will be used in situations where the new static irq_connect()
won't work, i.e. the value of arguments can't be computed at build time
- a new API for static interrupts replaces irq_connect(). it is used
exactly the same way as its dynamic counterpart. The old static irq
macros will be removed
- Separate stub assembly files are no longer needed as the stubs are now
generated inline with irq_connect()
ReST documentation updated for the changed API. Some detail about the
IDT in ROM added, and an oblique reference to the internal-only
_irq_handler_set() API removed; we don't talk about internal APIs in
the official documentation.
Change-Id: I280519993da0e0fe671eb537a876f67de33d3cd4
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Change-Id: Id2ee328458c5a1be944e90c34bbc2158464be325
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Removed old style file description and documnetation and apply
doxygen synatx.
Change-Id: I3ac9f06d4f574bf3c79c6f6044cec3a7e2f6e4c8
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Removes the following deprecated routines:
nano_cycle_get_32()
task_cycle_get_32()
fiber_cycle_get_32()
isr_cycle_get_32()
Those routines have all been replaced by sys_cycle_get_32().
Change-Id: I8709952633bb87c8963e88caffe1036fb9add527
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Renames _sys_clock_cycle_get() (provided by the timer driver)
to sys_cycle_get_32(). It is the preferred method to read the
hardware clock.
Change-Id: Ifea5213d8c04a8bf7b9114b048c5db0ccee61549
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Flags allow passing IRQ triggering option for x86 architecture.
Each platform defines flags for a particular device and then
device driver uses them when registers the interrupt handler.
The change in API means that device drivers and sample
applications need to use the new API.
IRQ triggering configuration is now handled by device drivers
by using flags passed to interrupt registering API:
IRQ_CONNECT_STATIC() or irq_connect()
Change-Id: Ibc4312ea2b4032a2efc5b913c6389f780a2a11d1
Signed-off-by: Dmitriy Korovkin <dmitriy.korovkin@windriver.com>
Rename them to SYSTEM_CLOCK_DISABLE and sys_clock_disable to put
the symbols in the proper namespace and to align with the rest of
the timer APIs.
Change-Id: I341cdb1bd6cc01e5662d8526c293d4e0acd6ec24
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
The \NOMANUAL tag is a remnant from days of yore and is no longer
needed or useful. Cleaning up the code references to this.
Change-Id: I1b8cc9c9560d1dbb711f05fa63fd23386789875c
Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>
Change-Id: I6da43e41f9c6efee577b70513ec368ae3cce0144
Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Change-Id: I8f51f861e2250c87c296b697ef5b6610ce644b34
Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Change all the Intel and Wind River code license from BSD-3 to Apache 2.
Change-Id: Id8be2c1c161a06ea8a0b9f38e17660e11dbb384b
Signed-off-by: Javier B Perez Hernandez <javier.b.perez.hernandez@linux.intel.com>
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
The drivers provide _sys_clock_cycle_get(): moving the public APIs to
the drivers allow them to be aliases of it.
Change-Id: Ic5975a048f2b51f94510f0c3cd5e6ab3a8907718
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Removes references to obsolete BSP terminology. Where appropriate, replaces it
with platform terminology.
Change-Id: Ifb17f98bc12d3a28198810351629a109abdc18a5
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Prepares the _sys_clock_driver_init() routine to interface with the new driver
model. To this end, it must accept a pointer to a device structure and return
an integer.
Change-Id: I3c600ce1efb49c0864aae7b09663ca40d6289372
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
The revised name conforms to Zephyr OS naming conventions.
Change-Id: I5bcdaf1df7da9d8ce5787a08b29ead91dd8f24ce
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Removing the parameter to timer_driver() as it is not used.
Change-Id: I09275287eeb541be0dd315056b4f2bc6cbc2573c
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Remove function name from comment and add @brief instead.
Also capitilize first letter.
Change-Id: Ib708b49bf02e5bc89b0066637a55874e659637e0
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Previous comment style used RETRURNS:, use @return to comply
with javadoc style.
Change-Id: Ib1dffd92da1d97d60063ec5309b08049828f6661
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
The change replaces multiple asterisks to ** at
the beginning of comments and adds a space before
the asterisks at the beginning of lines.
Change-Id: I7656bde3bf4d9a31e38941e43b580520432dabc1
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Anas Nashif