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replace boilerplate "should we use ->saved_sigmask or ->blocked?"
with calls of obvious inlined helper...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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first fruits of ..._restore_sigmask() helpers: now we can take
boilerplate "signal didn't have a handler, clear RESTORE_SIGMASK
and restore the blocked mask from ->saved_mask" into a common
helper. Open-coded instances switched...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull second pile of signal handling patches from Al Viro:
"This one is just task_work_add() series + remaining prereqs for it.
There probably will be another pull request from that tree this
cycle - at least for helpers, to get them out of the way for per-arch
fixes remaining in the tree."
Fix trivial conflict in kernel/irq/manage.c: the merge of Andrew's pile
had brought in commit 97fd75b7b8e0 ("kernel/irq/manage.c: use the
pr_foo() infrastructure to prefix printks") which changed one of the
pr_err() calls that this merge moves around.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal:
keys: kill task_struct->replacement_session_keyring
keys: kill the dummy key_replace_session_keyring()
keys: change keyctl_session_to_parent() to use task_work_add()
genirq: reimplement exit_irq_thread() hook via task_work_add()
task_work_add: generic process-context callbacks
avr32: missed _TIF_NOTIFY_RESUME on one of do_notify_resume callers
parisc: need to check NOTIFY_RESUME when exiting from syscall
move key_repace_session_keyring() into tracehook_notify_resume()
TIF_NOTIFY_RESUME is defined on all targets now
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Pull MIPS updates from Ralf Baechle:
"The whole series has been sitting in -next for quite a while with no
complaints. The last change to the series was before the weekend the
removal of an SPI patch which Grant - even though previously acked by
himself - appeared to raise objections. So I removed it until the
situation is clarified. Other than that all the patches have the acks
from their respective maintainers, all MIPS and x86 defconfigs are
building fine and I'm not aware of any problems introduced by this
series.
Among the key features for this patch series is a sizable patchset for
Lantiq which among other things introduces support for Lantiq's
flagship product, the FALCON SOC. It also means that the opensource
developers behind this patchset have overtaken Lantiq's competing
inhouse development team that was working behind closed doors.
Less noteworthy the ath79 patchset which adds support for a few more
chip variants, cleanups and fixes. Finally the usual dose of tweaking
of generic code."
Fix up trivial conflicts in arch/mips/lantiq/xway/gpio_{ebu,stp}.c where
printk spelling fixes clashed with file move and eventual removal of the
printk.
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (81 commits)
MIPS: lantiq: remove orphaned code
MIPS: Remove all -Wall and almost all -Werror usage from arch/mips.
MIPS: lantiq: implement support for FALCON soc
MTD: MIPS: lantiq: verify that the NOR interface is available on falcon soc
MTD: MIPS: lantiq: implement OF support
watchdog: MIPS: lantiq: implement OF support and minor fixes
SERIAL: MIPS: lantiq: implement OF support
GPIO: MIPS: lantiq: convert gpio-stp-xway to OF
GPIO: MIPS: lantiq: convert gpio-mm-lantiq to OF and of_mm_gpio
GPIO: MIPS: lantiq: move gpio-stp and gpio-ebu to the subsystem folder
MIPS: pci: convert lantiq driver to OF
MIPS: lantiq: convert dma to platform driver
MIPS: lantiq: implement support for clkdev api
MIPS: lantiq: drop ltq_gpio_request() and gpio_to_irq()
OF: MIPS: lantiq: implement irq_domain support
OF: MIPS: lantiq: implement OF support
MIPS: lantiq: drop mips_machine support
OF: PCI: const usage needed by MIPS
MIPS: Cavium: Remove smp_reserve_lock.
MIPS: Move cache setup to setup_arch().
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'next/ath79' and 'next/lantiq' into mips-for-linux-next
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Now that all drivers are converted to OF we are able to remove some remaining
pieces of orphaned code.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3841/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Adds support for the FALCON SoC. This SoC is from the FTTH/GPON SoC family.
Signed-off-by: Thomas Langer <thomas.langer@lantiq.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3814/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add support for OF. We also apply the following small fixes
* reduce boiler plate by using devm_request_and_ioremap
* sane error path for the clock
* move LTQ_RST_CAUSE_WDTRST to a soc specific header file
* add a message to show that the driver loaded
Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: Wim Van Sebroeck <wim@iguana.be>
Cc: linux-watchdog@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3810/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Move the 2 drivers from arch/mips/lantiq/xway/ to the subsystem and make them
buildable.
The following 2 patches will convert the drivers to OF.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Patchwork: https://patchwork.linux-mips.org/patch/3838/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Implement support for OF inside the lantiq PCI driver. The patch also splits
pcibios_plat_dev_init and pcibios_map_irq out into their own file to accomodate
coexistance with the upcoming pcie driver.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3806/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add code to make the dma driver load as a platform device from the devicetree.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3824/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This patch unifies all clock generation and gating code into one file.
All drivers will now be able to request their clocks via their device.
This patch also adds support for the clockout feature, which allows
clock generation on external pins.
Support for COMMON_CLK will be provided in the next series.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3804/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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As part of the conversion to OF we also implement pinctrl drivers. Previously
we used ltq_gpio_request() to set pinmuxing. This is now obselete and we can
hence drop the function.
Additionally we remove gpio_to_irq() from the gpio driver and move it to a
header file.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3801/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add support for irq_domain on lantiq socs. The conversion is straight forward
as the ICU found inside the socs allows the usage of irq_domain_add_linear.
Harware IRQ 0->7 are the generic MIPS IRQs. 8->199 are the Lantiq IRQ Modules.
Our irq_chip callbacks need to substract 8 (MIPS_CPU_IRQ_CASCADE) from d->hwirq
to find out the correct offset into the Interrupt Modules register range.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: devicetree-discuss@lists.ozlabs.org
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3802/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Activate USE_OF, add a sample DTS file and convert the core soc code to OF.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: devicetree-discuss@lists.ozlabs.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3803/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Before we are able to add OF support, we really want to drop all the bloat
needed to register all the platform devices.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3800/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add 2 new soc specifc handlers and remove superflous pr_notice calls.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3705/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add the soc ids for additional xway socs. The patch also merges the amazon_se
code with the other socs.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3707/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The code tested if the KSEG1 mapped address of argv was != 0. We need to use
CPHYSADDR instead to make the conditional actually work.
Signed-off-by: Thomas Langer <thomas.langer@lantiq.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3722/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The code was using a 32bit write operations in the early_printk code. This
resulted in 3 zero bytes also being written to the serial port. This patch
changes the memory access to 8bit.
Signed-off-by: Thomas Langer <thomas.langer@lantiq.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3721/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add IPI handlers to the interrupt code. This patch makes MIPS_MT_SMP work
on lantiq socs. The code is based on the malta implementation.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3704/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This patch sets the performance counters irq on Lantiq SoCs.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3720/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Due to missing brackets, the irq modules were not properly reset on boot.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3719/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Trivial fix that removes an orphaned prototype.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3701/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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For clock device lookup tables to work on MIPS, we need to provide this
architecture specific header file.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3700/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Call early_init_devtree from inside __dt_setup_arch to allow parsing of the
chosen node.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3718/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add __dt_setup_arch() that can be called to load a builtin DT.
Additionally we add a macro to allow loading a specific symbol
from the __dtb_* section.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3715/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Without I/O ports won't work.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3697/
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Implement pci_load_of_ranges on MIPS. Due to lack of test hardware only 32bit
bus width is supported. This function is based on pci_process_bridge_OF_ranges
from powerpc.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3729/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Make the oprofile code use the performance counters irq.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3723/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Cc: linux-mips@linux-mips.org
Cc: mcgrof@infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/3517/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Cc: linux-mips@linux-mips.org
Cc: mcgrof@infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/3516/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The AR724X specific PCI code can be used for the
AR934X SoCs, however it can be selected only if
SOC_AR724X is set.
Introduce a new Kconfig symbol in order to be able
to use the code for AR934X as well.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Cc: linux-mips@linux-mips.org
Cc: mcgrof@infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/3514/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Cc: linux-mips@linux-mips.org
Cc: mcgrof@infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/3513/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Cc: linux-mips@linux-mips.org
Cc: mcgrof@infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/3512/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Cc: linux-mips@linux-mips.org
Cc: mcgrof@infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/3511/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Cc: linux-mips@linux-mips.org
Cc: mcgrof@infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/3510/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The current implementation assumes that flushing the
DDR writeback buffer is required for IP2/IP3 interrupts,
however this is not true for all SoCs.
Use SoC specific IP2/IP3 handlers instead of flushing
the buffers in the dispatcher code.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Cc: linux-mips@linux-mips.org
Cc: mcgrof@infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/3509/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Cc: linux-mips@linux-mips.org
Cc: mcgrof@infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/3508/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Cc: linux-mips@linux-mips.org
Cc: mcgrof@infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/3507/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Also add 'soc_is_ar934[124x]' helper functions and a Kconfig
symbol for the AR934X SoCs.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Cc: linux-mips@linux-mips.org
Cc: mcgrof@infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/3506/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Sort the case statements alphabetically in order to improve
readability.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Cc: linux-mips@linux-mips.org
Cc: mcgrof@infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/3505/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The patch allows to see kernel messages on AR934X SoCs in
early boot stage.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Cc: linux-mips@linux-mips.org
Cc: mcgrof@infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/3504/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add copyright records according to the recent changes in
the PCI code. Also fix up the descriptions.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3503/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The PB44 reference board has two miniPCI slots. Register
the PCI controller to make those usable.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3502/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The variables set by this function are not used anymore.
Remove the function and the relevant variables as well.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3501/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The PCI controllers in the AR71XX and in the
AR724X SoCs are different, and both of them
uses different IRQ wiring.
The patch modifies the 'pcibios_map_irq' function
in order to allow to use different IRQ maps for
the different SoCs. The patch also adds a function,
which lets the board setup code to override the
default IRQ map.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3500/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The Atheros AR71XX SoCs have a built-in PCI Host Controller.
This patch adds a driver for that, and modifies the relevant
files in order to allow to register the PCI controller from
board specific setup.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3498/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Th current implementation causes NULL pointer dereference
if 'pci_data' is not set:
pci 0000:00:00.0: BAR 0: assigned [mem 0x10000000-0x1000ffff 64bit]
pci 0000:00:00.0: BAR 0: set to [mem 0x10000000-0x1000ffff 64bit] (PCI
address [0x10000000-0x1000ffff])
CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 802daca0, ra == 802e78a4
Oops[#1]:
Cpu 0
$ 0 : 00000000 80420000 00000000 00000000
$ 4 : 00000000 00000000 00000001 00000001
$ 8 : 00000001 0000032c 81c54700 00000001
$12 : 0000032d 0000000f 00000000 ffffffff
$16 : 81c14c00 00000001 802dac74 80195f98
$20 : 802ea050 00000000 00000000 00000000
$24 : 00000003 800617f0
$28 : 81c20000 81c21e70 00000000 802e78a4
Hi : 00000000
Lo : 4190ab00
epc : 802daca0 0x802daca0
Not tainted
ra : 802e78a4 0x802e78a4
Status: 1000c003 KERNEL EXL IE
Cause : 00800008
BadVA : 00000000
PrId : 00019374 (MIPS 24Kc)
Modules linked in:
Process swapper (pid: 1, threadinfo=81c20000, task=81c18000, tls=00000000)
Stack : 00000000 8027d5d8 802e8ae0 00000000 01000000 802e8b5c 81c50600 00000000
802ff290 00000000 80420000 802ea0bc 00000000 00000000 80420000 802ff290
80420000 80060930 33390000 00000000 00002308 80140a80 00000028 802d0000
00000000 800ba024 802ff004 802ff0c8 802ff290 00000000 00000000 00000000
00000000 802d897c 01234567 7f827068 00000000 0045f798 00460000 00000000
This can be avoided by calling the 'ar724x_pci_add_data'
function from the board specific setup code. However it
makes no sense to use that function for every board,
especially when the board does not needs to set the
platform_data field of any PCI device.
The patch allows the board setup code to specify a board
specific function if that is required.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3499/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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