- 05 6月, 2015 2 次提交
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由 Jeremy Kerr 提交于
The (upcoming) opal-prd driver needs to access the message notifier and xscom code, so add EXPORT_SYMBOL_GPL macros for these. Signed-off-by: NJeremy Kerr <jk@ozlabs.org> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Jeremy Kerr 提交于
opal_ipmi_init and opal_flash_init are equivalent, except for the compatbile string. Merge these two into a common opal_pdev_init function. Signed-off-by: NJeremy Kerr <jk@ozlabs.org> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 04 6月, 2015 1 次提交
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由 Cédric Le Goater 提交于
The opal_{get,set}_param calls return internal error codes which need to be translated in errnos in Linux. Signed-off-by: NCédric Le Goater <clg@fr.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 22 5月, 2015 4 次提交
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由 Alistair Popple 提交于
All users of the old opal events notifier have been converted over to the irq domain so remove the event notifier functions. Signed-off-by: NAlistair Popple <alistair@popple.id.au> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Alistair Popple 提交于
This patch converts the opal message event to use the new opal irq domain. Signed-off-by: NAlistair Popple <alistair@popple.id.au> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Alistair Popple 提交于
Whenever an interrupt is received for opal the linux kernel gets a bitfield indicating certain events that have occurred and need handling by the various device drivers. Currently this is handled using a notifier interface where we call every device driver that has registered to receive opal events. This approach has several drawbacks. For example each driver has to do its own checking to see if the event is relevant as well as event masking. There is also no easy method of recording the number of times we receive particular events. This patch solves these issues by exposing opal events via the standard interrupt APIs by adding a new interrupt chip and domain. Drivers can then register for the appropriate events using standard kernel calls such as irq_of_parse_and_map(). Signed-off-by: NAlistair Popple <alistair@popple.id.au> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Alistair Popple 提交于
Most of the OPAL subsystems are always compiled in for PowerNV and many of them need to be initialised before or after other OPAL subsystems. Rather than trying to control this ordering through machine initcalls it is clearer and easier to control initialisation order with explicit calls in opal_init. Signed-off-by: NAlistair Popple <alistair@popple.id.au> Cc: Mahesh Jagannath Salgaonkar <mahesh@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 11 4月, 2015 1 次提交
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由 Cyril Bur 提交于
This change adds the OPAL interface definitions to allow Linux to read, write and erase from system flash devices. We register platform devices for the flash devices exported by firmware. We clash with the existing opal_flash_init function, which is really for the FSP flash update functionality, so we rename that initcall to opal_flash_update_init(). A future change will add an mtd driver that uses this interface. Changes from Joel Stanley and Jeremy Kerr. Signed-off-by: NCyril Bur <cyrilbur@gmail.com> Signed-off-by: NJeremy Kerr <jk@ozlabs.org> Signed-off-by: NJoel Stanley <joel@jms.id.au> Acked-by: NStewart Smith <stewart@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 31 3月, 2015 1 次提交
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由 Cédric Le Goater 提交于
OPAL has its own list of return codes. The patch provides a translation of such codes in errnos for the opal_sensor_read call, and possibly others if needed. Signed-off-by: NCédric Le Goater <clg@fr.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 25 3月, 2015 3 次提交
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由 Neelesh Gupta 提交于
Provide an unregister interface for the opal message notifiers to be called when not needed like during driver unload/remove. Signed-off-by: NNeelesh Gupta <neelegup@linux.vnet.ibm.com> Reviewed-by: NVasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Neelesh Gupta 提交于
Fixes the condition check of incoming message type which can otherwise shoot beyond the message notifiers head array. Signed-off-by: NNeelesh Gupta <neelegup@linux.vnet.ibm.com> Reviewed-by: NVasant Hegde <hegdevasant@linux.vnet.ibm.com> Reviewed-by: NAnshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Benjamin Herrenschmidt 提交于
If OPAL requests it, call it back via opal_poll_events() at a regular interval. Some versions of OPAL on some machines require this to operate some internal timeouts properly. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 16 3月, 2015 2 次提交
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由 Michael Ellerman 提交于
This commit gets opal-api.h to mostly match the version in Skiboot as of commit ea7d806ab0ba. The exceptions are things which are not (currently) used in Linux. Most of this is just whitespace and a few things moving around. I think the diff is readable. Also OpalMessageType became opal_msg_type, requiring a change in the Linux code. Finally Skiboot and Linux disagree on CAPI vs CXL, because CAPI means something else in Linux. To handle that we just point the Linux wrapper, which is named "cxl" to the OPAL token OPAL_PCI_SET_PHB_CAPI_MODE. Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au> Reviewed-by: NStewart Smith <stewart@linux.vnet.ibm.com>
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由 Stewart Smith 提交于
Correct use of REGISTER/UNREGISTER is to check if the token exists before calling. If we don't we get a "OPAL: Called with bad token 101 !" error, which is harmless but may be alarming to some. Signed-off-by: NStewart Smith <stewart@linux.vnet.ibm.com> Acked-by: NVasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 28 1月, 2015 3 次提交
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由 Gavin Shan 提交于
On PowerNV platform, the OPAL interrupts are exported by firmware through device-node property (/ibm,opal::opal-interrupts). Under some extreme circumstances (e.g. simulator), we don't have this property found from the device tree. For that case, we shouldn't allocate the interrupt map. Otherwise, slab complains allocating zero sized memory chunk. Signed-off-by: NGavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Gavin Shan 提交于
The patch put the OPAL interrupt setup logic in opal_init() into seperate function opal_irq_init() for easier code maintaining. The patch doesn't introduce logic changes except: * Rename variable names. * Release virtual IRQ upon error from request_irq(). * Don't cache the virtual IRQ to opal_irqs[] upon error from request_irq(). Suggested-by: NMichael Ellerman <mpe@ellerman.id.au> Signed-off-by: NGavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Michael Ellerman 提交于
In commit c8742f85 "powerpc/powernv: Expose OPAL firmware symbol map" I added pr_fmt() to opal.c. This left some existing pr_xxx()s with duplicate "opal" prefixes, eg: opal: opal: Found 0 interrupts reserved for OPAL Fix them all up. Also make the "Not not found" message a bit more verbose. Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 27 1月, 2015 1 次提交
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由 Pranith Kumar 提交于
When CONFIG_PRINTK=n, log_buf_addr_get() returns NULL and log_buf_len_get() return 0. Check for these return values and skip registering the dump buffer. Signed-off-by: NPranith Kumar <bobby.prani@gmail.com> Reviewed-by: NStewart Smith <stewart@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 15 12月, 2014 1 次提交
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由 Benjamin Herrenschmidt 提交于
Newer versions of OPAL will provide this, so let's expose it to user space so tools like perf can use it to properly decode samples in firmware space. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 14 12月, 2014 1 次提交
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由 Neelesh Gupta 提交于
The patch exposes the available i2c busses on the PowerNV platform to the kernel and implements the bus driver to support i2c and smbus commands. The driver uses the platform device infrastructure to probe the busses on the platform and registers them with the i2c driver framework. Signed-off-by: NNeelesh Gupta <neelegup@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Wolfram Sang <wsa@the-dreams.de> (I2C part, excluding the bindings) Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 02 12月, 2014 1 次提交
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由 Mahesh Salgaonkar 提交于
Cleanup OpalMCE_* definitions/declarations and other related code which is not used anymore. Signed-off-by: NMahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Acked-by: NBenjamin Herrrenschmidt <benh@kernel.crashing.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 17 11月, 2014 1 次提交
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由 Neelesh Gupta 提交于
The patch implements the OPAL rtc driver that binds with the rtc driver subsystem. The driver uses the platform device infrastructure to probe the rtc device and register it to rtc class framework. The 'wakeup' is supported depending upon the property 'has-tpo' present in the OF node. It provides a way to load the generic rtc driver in in the absence of an OPAL driver. The patch also moves the existing OPAL rtc get/set time interfaces to the new driver and exposes the necessary OPAL calls using EXPORT_SYMBOL_GPL. Test results: ------------- Host: [root@tul169p1 ~]# ls -l /sys/class/rtc/ total 0 lrwxrwxrwx 1 root root 0 Oct 14 03:07 rtc0 -> ../../devices/opal-rtc/rtc/rtc0 [root@tul169p1 ~]# cat /sys/devices/opal-rtc/rtc/rtc0/time 08:10:07 [root@tul169p1 ~]# echo `date '+%s' -d '+ 2 minutes'` > /sys/class/rtc/rtc0/wakealarm [root@tul169p1 ~]# cat /sys/class/rtc/rtc0/wakealarm 1413274345 [root@tul169p1 ~]# FSP: $ smgr mfgState standby $ rtim timeofday System time is valid: 2014/10/14 08:12:04.225115 $ smgr mfgState ipling $ CC: devicetree@vger.kernel.org CC: tglx@linutronix.de CC: rtc-linux@googlegroups.com CC: a.zummo@towertech.it Signed-off-by: NNeelesh Gupta <neelegup@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 12 11月, 2014 1 次提交
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由 Jeremy Kerr 提交于
Recent OPAL firmare adds a couple of functions to send and receive IPMI messages: https://github.com/open-power/skiboot/commit/b2a374da This change updates the token list and wrappers to suit, and adds the platform devices for any IPMI interfaces. Signed-off-by: NJeremy Kerr <jk@ozlabs.org> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 13 10月, 2014 1 次提交
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由 Mahesh Salgaonkar 提交于
Recently we moved HMI handling into Linux kernel instead of taking HMI directly in OPAL. This new change is dependent on new OPAL call for HMI recovery which was introduced in newer firmware. While this new change works fine with latest OPAL firmware, we broke the HMI handling if we run newer kernel on old OPAL firmware that results in system hang. This patch fixes this issue by falling back to old HMI behavior on older OPAL firmware. This patch introduces a check for opal token OPAL_HANDLE_HMI to see if we are running on newer firmware or old firmware. On newer firmware this check would return OPAL_TOKEN_PRESENT, otherwise we are running on old firmware and fallback to old HMI behavior. Old firmware: POWER8 System Firmware Release as of today <= SV810_087 Action: Let OPAL handle HMIs Newer firmware: in development/yet to be released. Action: Let Linux host handle HMIs. This patch depends on opal check token patch posted at ppc-devel https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-August/120224.htmlSigned-off-by: NMahesh Salgaonkar <mahesh@linux.vnet.ibm.com> [mpe: Minor comment and printk rewording] Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 02 10月, 2014 1 次提交
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由 Anton Blanchard 提交于
Add printk levels to powernv platform code, and convert to pr_err() etc while here. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 01 9月, 2014 1 次提交
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由 Masanari Iida 提交于
This patch fix spelling typo in printk. Signed-off-by: NMasanari Iida <standby24x7@gmail.com> Acked-by: NGeert Uytterhoeven <geert@linux-m68k.org> Acked-by: NRandy Dunlap <rdunlap@infradead.org> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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- 13 8月, 2014 1 次提交
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由 Vasant Hegde 提交于
PowerNV platform is capable of capturing host memory region when system crashes (because of host/firmware). We have new OPAL API to register/ unregister memory region to be captured when system crashes. This patch adds support for new API. Also during boot time we register kernel log buffer and unregister before doing kexec. Signed-off-by: NVasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 05 8月, 2014 2 次提交
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由 Mahesh Salgaonkar 提交于
When we hit the HMI in Linux, invoke opal call to handle/recover from HMI errors in real mode and then in virtual mode during check_irq_replay() invoke opal_poll_events()/opal_do_notifier() to retrieve HMI event from OPAL and act accordingly. Now that we are ready to handle HMI interrupt directly in linux, remove the HMI interrupt registration with firmware. Signed-off-by: NMahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Mahesh Salgaonkar 提交于
Handle Hypervisor Maintenance Interrupt (HMI) in Linux. This patch implements basic infrastructure to handle HMI in Linux host. The design is to invoke opal handle hmi in real mode for recovery and set irq_pending when we hit HMI. During check_irq_replay pull opal hmi event and print hmi info on console. Signed-off-by: NMahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 28 7月, 2014 1 次提交
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由 Michael Ellerman 提交于
A lot of the code in platforms/powernv is using non-machine initcalls. That means if a kernel built with powernv support runs on another platform, for example pseries, the initcalls will still run. That is usually OK, because the initcalls will check for something in the device tree or elsewhere before doing anything, so on other platforms they will usually just return. But it's fishy for powernv code to be running on other platforms, so switch them all to be machine initcalls. If we want any of them to run on other platforms in future they should move to sysdev. Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 05 6月, 2014 1 次提交
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由 Benjamin Herrenschmidt 提交于
When running as a powernv "host" system on P8, we need to switch the endianness of interrupt handlers. This does it via the appropriate call to the OPAL firmware which may result in just switching HID0:HILE but depending on the processor version might need to do a few more things. This call must be done early before any other processor has been brought out of firmware. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAndy Whitcroft <apw@canonical.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 30 4月, 2014 1 次提交
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由 Rob Herring 提交于
Make of_get_flat_dt_prop arguments compatible with libfdt fdt_getprop call in preparation to convert FDT code to use libfdt. Make the return value const and the property length ptr type an int. Signed-off-by: NRob Herring <robh@kernel.org> Tested-by: NMichal Simek <michal.simek@xilinx.com> Tested-by: NGrant Likely <grant.likely@linaro.org> Tested-by: NStephen Chivers <schivers@csc.com>
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- 28 4月, 2014 2 次提交
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由 Anton Blanchard 提交于
We have two copies of code that creates an OPAL sg list. Consolidate these into a common set of helpers and fix the endian issues. The flash interface embedded a version number in the num_entries field, whereas the dump interface did did not. Since versioning wasn't added to the flash interface and it is impossible to add this in a backwards compatible way, just remove it. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
The bitmap in opal_poll_events and opal_handle_interrupt is big endian, so we need to byteswap it on little endian builds. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 09 4月, 2014 3 次提交
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由 Joel Stanley 提交于
This call will not be understood by OPAL, and cause it to add an error to it's log. Among other things, this is useful for testing the behaviour of the log as it fills up. Signed-off-by: NJoel Stanley <joel@jms.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Joel Stanley 提交于
OPAL provides an in-memory circular buffer containing a message log populated with various runtime messages produced by the firmware. Provide a sysfs interface /sys/firmware/opal/msglog for userspace to view the messages. Signed-off-by: NJoel Stanley <joel@jms.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Mahesh Salgaonkar 提交于
Currently we wrongly allocate mc_recoverable_range buffer (to hold recoverable ranges) based on size of the property "mcheck-recoverable-ranges". This results in allocating less memory to hold available recoverable range entries from /proc/device-tree/ibm,opal/mcheck-recoverable-ranges. This patch fixes this issue by allocating mc_recoverable_range buffer based on number of entries of recoverable ranges instead of device property size. Without this change we end up allocating less memory and run into memory corruption issue. Signed-off-by: NMahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 07 4月, 2014 2 次提交
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由 Anton Blanchard 提交于
OPAL defines opal_msg as a big endian struct so we have to byte swap it on little endian builds. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Benjamin Herrenschmidt 提交于
opal_notifier_register() is missing a pending "unregister" variant and should be exposed to modules. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 24 3月, 2014 1 次提交
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由 Neelesh Gupta 提交于
This patch enables reading and updating of system parameters through OPAL call. Signed-off-by: NNeelesh Gupta <neelegup@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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