Linaro-acpi

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820 discussions

by Tomasz Nowicki

These commits were created to make APEI tables testable. All should be pushed to some test brunch so anybody could test it on his own, reused etc. Tomasz Nowicki (3): acpi, apei, erst: Reserve no cachable region for persistent storage. acpi, apei, einj: Hack EINJ driver to enable injection GHES and kernel panic from userspace. apci, apei, arm64: Make some space for APEI blob. arch/arm64/boot/dts/foundation-v8-acpi.dts | 2 +- drivers/acpi/apei/einj.c | 27 +++++++++++++++++++++++++++ drivers/acpi/apei/erst.c | 2 +- 3 files changed, 29 insertions(+), 2 deletions(-) -- 1.7.9.5

11 years, 7 months

Cherry-picked early_ioremap patch for aarch64

by Al Stone

The patch below adds in an early_ioremap for aarch64 allowing the ACPI code to function. It's still under discussion upstream and will likely change but it will allow work to continue on aarch64 in the short-term. Please test and let us know if it works or if it uncovers any other interesting issues. -- ciao, al ----------------------------------- Al Stone Software Engineer Linaro Enterprise Group al.stone(a)linaro.org -----------------------------------

11 years, 7 months

[PATCH 0/2] Boot Error Record Table (BERT) support

by Tomasz Nowicki

This is re-use existing patch submitted by Huang Ying <ying.huang(a)intel.com> with one small modification (see commits). The first idea was to use just printk to inform about any errors that were not consumed by OS. Errors listed in HEST table should point to the same "Error status block" ESB structures as BERT does. OS handling errors should clear errors status bit in ESB for given error at the end of error recovery procedure. Case where error appeared to be too serious OS can reset machine immediately without clearing bit in ESB. During boot, kernel examine each error status bit from ESB list (pointed from BERT) and see if there are any unhandled errors. BERT table was tested along with HEST and EINJ driver, in the following way: 1. Fill in ESB using EINJ hacked driver and do not clear erros status in ESB, this way unhandler error is simulated and BERT table could be used later: root@localhost:~# echo 1 > /sys/kernel/debug/apei/einj/error_inject 2. Reboot machin and check whether BERT driver notice injected error: ... [ 2.518179] [Hardware Error]: Error record from previous boot: [ 2.523342] [Hardware Error]: APEI generic hardware error status [ 2.548457] [Hardware Error]: severity: 1, fatal [ 2.574705] [Hardware Error]: section: 0, severity: 0, recoverable [ 2.584010] [Hardware Error]: flags: 0x00 [ 2.587937] [Hardware Error]: section_type: memory error ... 3. Kernel clear status bit so next boot would not print it again.

11 years, 7 months

[PATCH 0/1] arm acpi ioremap changes

by Graeme Gregory

This is a cleaned up version of patches posted earlier by Al Stone. I have split them into patches with attempt to make only one change per patch. Graeme

11 years, 7 months

[PATCH] ARM: with certain kernel configs, a stub function definition was missing.

by al.stone＠linaro.org

From: Al Stone <ahs3(a)redhat.com> This patch adds a stub function for arch_fix_phys_package_id() for those kernel configurations that need it. Found while trying to build a VExpress configuration. Signed-off-by: Al Stone <al.stone(a)linaro.org> --- arch/arm/include/asm/topology.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/include/asm/topology.h b/arch/arm/include/asm/topology.h index a6ff5cc..70d9c47 100644 --- a/arch/arm/include/asm/topology.h +++ b/arch/arm/include/asm/topology.h @@ -66,6 +66,7 @@ static inline void init_cpu_topology(void) { } static inline void store_cpu_topology(unsigned int cpuid) { } static inline int cluster_to_logical_mask(unsigned int socket_id, cpumask_t *cluster_mask) { return -EINVAL; } +static inline void arch_fix_phys_package_id(int num, u32 slot) { }; #endif -- 1.8.3.1

11 years, 7 months

[PATCH 0/4] driver core: Introduce initcall_driver() to eliminate boilerplate code

by Hanjun Guo

Lots of device drivers especially for platform/I2C/SPI bus devices, they want to be initialized earlier than other devices, so the driver use initcall such as subsys_initcall for the device initialization. But for those drivers, lots of them just do nothing special in xxx_initcall/module_exit, and produce lots of boilerplate. This patch set introduces a helper macro initcall_driver() to eliminate lots of boilerplate just like module_driver() did, and use it for platform/I2C/SPI bus devices. I use following command under the lastest kernel source code: $grep -r -E "*_initcall" drivers/ | cut -d":" -f1 |xargs grep -E "return platform_driver_register|return i2c_add_driver|return spi_register_driver" | cut -d":" -f1 | xargs grep "module_exit" | wc -l and get 205 hits, so if we use helper macro initcall_driver(), we can reduce thousands lines of code. Hanjun Guo (4): driver core: introduce helper macro initcall_driver() platform device: introduce helper macro initcall_platform_driver() i2c: introduce helper macro initcall_i2c_driver() spi: introduce helper macro initcall_spi_driver() include/linux/device.h | 27 +++++++++++++++++++++++++++ include/linux/i2c.h | 11 +++++++++++ include/linux/platform_device.h | 11 +++++++++++ include/linux/spi/spi.h | 11 +++++++++++ 4 files changed, 60 insertions(+) -- 1.7.9.5

11 years, 7 months

[RFC PATCH 0/3] ACPI: ARM: Register irq with ACPI and not DT.

by Amit Daniel Kachhap

hi, The patches in the series are just in work in progress and intended to clear some doubts as pointed below. Any comment/direction is helpful from the linaro acpi group. 1) Basic controllers like GIC and timer need to be initialised before platform drivers are ready so question is how to invoke the __init of these devices. Is there any function to raw parse the ACPI tables similar to existing DT API's? 2) Some important elements like clock frequency is missing from the GTDT table. how to get them? Thanks in advance. Amit Daniel Kachhap (3): irqdomain: Add a new API irq_create_default_mapping ACPI: ARM: Update acpi_register_gsi to register with the core IRQ subsystem ACPI: clocksource: arch_timer: Use GTDT table to gather data drivers/acpi/plat/arm/boot.c | 27 ++++++++++++++-- drivers/clocksource/arm_arch_timer.c | 58 ++++++++++++++++++++++++++++++++++ include/linux/irqdomain.h | 2 + kernel/irq/irqdomain.c | 35 ++++++++++++++++++++ 4 files changed, 119 insertions(+), 3 deletions(-)

11 years, 7 months

[PATCH 00/10] Convert to module_platform_driver() in video driver

by Hanjun Guo

This patch set just did one simple thing: convert to module_platform_driver() in video driver to simplify the code. Hanjun Guo (10): Video / hecubafb: Use module_platform_driver() to simplify code Video / bfin-t350mcqb-fb: Use module_platform_driver() to simplify code Video / metronomefb: Use module_platform_driver() to simplify code Video / jz4740_fb: Use module_platform_driver() to simplify code Video / da8xx-fb: Use module_platform_driver() to simplify code Video / cobalt_lcdfb: Use module_platform_driver() to simplify code Video / broadsheetfb: Use module_platform_driver() to simplify code Video / bf54x-lq043fb: Use module_platform_driver() to simplify code Video / au1200fb: Use module_platform_driver() to simplify code Video / au1100fb: Use module_platform_driver() to simplify code drivers/video/au1100fb.c | 14 +------------- drivers/video/au1200fb.c | 16 +--------------- drivers/video/bf54x-lq043fb.c | 14 +------------- drivers/video/bfin-t350mcqb-fb.c | 14 +------------- drivers/video/broadsheetfb.c | 14 +------------- drivers/video/cobalt_lcdfb.c | 14 +------------- drivers/video/da8xx-fb.c | 14 +------------- drivers/video/hecubafb.c | 14 +------------- drivers/video/jz4740_fb.c | 13 +------------ drivers/video/metronomefb.c | 14 +------------- 10 files changed, 10 insertions(+), 131 deletions(-) -- 1.7.9.5

11 years, 7 months

[PATCH 1/2] ide / au1xxx-ide: Use module_platform_driver() to simplify code

by Hanjun Guo

Convert to module_platform_driver() to simplify code. Signed-off-by: Hanjun Guo <hanjun.guo(a)linaro.org> --- drivers/ide/au1xxx-ide.c | 14 +------------- 1 file changed, 1 insertion(+), 13 deletions(-) diff --git a/drivers/ide/au1xxx-ide.c b/drivers/ide/au1xxx-ide.c index 259786c..bdaf8a5 100644 --- a/drivers/ide/au1xxx-ide.c +++ b/drivers/ide/au1xxx-ide.c @@ -591,19 +591,7 @@ static struct platform_driver au1200_ide_driver = { .probe = au_ide_probe, .remove = au_ide_remove, }; - -static int __init au_ide_init(void) -{ - return platform_driver_register(&au1200_ide_driver); -} - -static void __exit au_ide_exit(void) -{ - platform_driver_unregister(&au1200_ide_driver); -} +module_paltform_driver(au1200_ide_driver); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("AU1200 IDE driver"); - -module_init(au_ide_init); -module_exit(au_ide_exit); -- 1.7.9.5

11 years, 7 months

[PATCH] Staging / quickstart: remove reduplicate if(acpi_disabled) check

by Hanjun Guo

In acpi_bus_register_driver(), there is an if (acpi_disabled) check, so the if(acpi_disabled) before it is reduplicate, remove it. Signed-off-by: Hanjun Guo <hanjun.guo(a)linaro.org> --- drivers/staging/quickstart/quickstart.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/staging/quickstart/quickstart.c b/drivers/staging/quickstart/quickstart.c index 4247d60..9f6ebdb 100644 --- a/drivers/staging/quickstart/quickstart.c +++ b/drivers/staging/quickstart/quickstart.c @@ -390,10 +390,6 @@ static int __init quickstart_init(void) { int ret; - /* ACPI Check */ - if (acpi_disabled) - return -ENODEV; - /* ACPI driver register */ ret = acpi_bus_register_driver(&quickstart_acpi_driver); if (ret) -- 1.7.9.5

11 years, 7 months

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