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* remoteproc: Drop wait in __rproc_boot()Bjorn Andersson2016-12-091-19/+3
| | | | | | | | | | | | | | In the event that rproc_boot() is called before the firmware loaded completion has been flagged it will wait with the mutex held, obstructing the request_firmware_nowait() callback from completing the wait. As rproc_fw_config_virtio() has been reduced to only triggering auto-boot there is no longer a reason for waiting in rproc_boot(), so drop this. Cc: Sarangdhar Joshi <spjoshi@codeaurora.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* remoteproc/ste: Delete unused driverJean Delvare2016-12-093-353/+0
| | | | | | | | | | | | | | | | | | | | Back in July 2014 I asked around what was the intended target platform for the STE Modem remoteproc driver, so that I could add the proper hardware dependency to its config option. The answer I got was that there was no known publicly available hardware needing it and it was unlikely that there ever would. So I think it's time to delete this driver to lower the maintenance burden. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Ohad Ben-Cohen <ohad@wizery.com> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Suman Anna <s-anna@ti.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Loic Pallardy <loic.pallardy@st.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* remoteproc: Remove "experimental" warningBjorn Andersson2016-12-091-3/+0
| | | | | | | | | | | Warning users that remoteproc and it's binary format are under development doesn't serve much of a purpose. Different drivers support different image formats and the resource table has a version field that would need to be bumped when incompatible changes are introduced. So lets drop this warning to clean up the kernel log. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* remoteproc: qcom_adsp_pil: select qcom_scmArnd Bergmann2016-12-091-0/+1
| | | | | | | | | | | | | | | | | | The adsp-pil driver relies on SCM and causes a build error without it: ERROR: "qcom_scm_pas_supported" [drivers/remoteproc/qcom_adsp_pil.ko] undefined! ERROR: "qcom_scm_is_available" [drivers/remoteproc/qcom_adsp_pil.ko] undefined! ERROR: "qcom_scm_pas_auth_and_reset" [drivers/remoteproc/qcom_adsp_pil.ko] undefined! ERROR: "qcom_scm_pas_shutdown" [drivers/remoteproc/qcom_adsp_pil.ko] undefined! ERROR: "qcom_scm_pas_mem_setup" [drivers/remoteproc/qcom_adsp_pil.ko] undefined! ERROR: "qcom_scm_pas_init_image" [drivers/remoteproc/qcom_adsp_pil.ko] undefined! This adds a 'select', as SCM is a silent Kconfig symbol that gets enabled implicitly by all its users. Fixes: b9e718e950c3 ("remoteproc: Introduce Qualcomm ADSP PIL") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* remoteproc: qcom: mdt_loader: add include for sizesStanimir Varbanov2016-12-021-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | Add linux/sizes.h to prevent build failure on non ARM architectures as: CC [M] drivers/remoteproc/qcom_mdt_loader.o In file included from include/linux/cache.h:4:0, from include/linux/printk.h:8, from include/linux/kernel.h:13, from include/asm-generic/bug.h:13, from arch/x86/include/asm/bug.h:35, from include/linux/bug.h:4, from include/linux/thread_info.h:11, from arch/x86/include/asm/elf.h:7, from include/linux/elf.h:4, from drivers/remoteproc/qcom_mdt_loader.c:18: drivers/remoteproc/qcom_mdt_loader.c: In function ‘qcom_mdt_parse’: drivers/remoteproc/qcom_mdt_loader.c:90:52: error: ‘SZ_4K’ undeclared (first use in this function) Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* remoteproc: Update last rproc_put users to rproc_freeBjorn Andersson2016-11-192-4/+4
| | | | | | | | The transition from rproc_put to rproc_free raced with the review of the Qualcomm ADSP and ST SLIMproc drivers and these where not updated accordingly. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* remoteproc: qcom: adsp: Add missing MODULE_DEVICE_TABLEBjorn Andersson2016-11-191-0/+1
| | | | Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* remoteproc: wcnss-pil: add QCOM_SMD dependencyArnd Bergmann2016-11-181-0/+1
| | | | | | | | | | | | | | | | When qcom_smd is a loadable module and wcnss-pil is built-in, we get a link error: drivers/remoteproc/qcom_wcnss_pil.o: In function `wcnss_smd_remove': qcom_wcnss_iris.c:(.text.wcnss_smd_remove+0x10): undefined reference to `qcom_smd_unregister_edge' drivers/remoteproc/qcom_wcnss_pil.o: In function `wcnss_smd_probe': qcom_wcnss_iris.c:(.text.wcnss_smd_probe+0x12): undefined reference to `qcom_smd_register_edge' This adds a Kconfig dependency to avoid this. We can still allow build-testing with SMD disabled. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* Merge branch 'topic/st_fdma' of ↵Bjorn Andersson2016-11-181-0/+1
|\ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/slave-dma into rproc-next * 'topic/st_fdma' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/slave-dma: dmaengine: st_fdma: Revert: "Revert: Update st_fdma to 'depends on REMOTEPROC'"
| * dmaengine: st_fdma: Revert: "Revert: Update st_fdma to 'depends on REMOTEPROC'"Vinod Koul2016-11-171-0/+1
| | | | | | | | | | | | | | | | | | This reverts commit 6d066389d598b3c3818c3c841179c2f95bbfe702 "(dmaengine: st_fdma: Revert: Update st_fdma to 'depends on REMOTEPROC')" as the commit it reverted was fine. Reported-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* | remoteproc: Add support for xo clockSarangdhar Joshi2016-11-161-1/+29
| | | | | | | | | | | | | | | | | | | | Add xo clock support required to boot up Qualcomm ADSP processor. The ADSP remoteproc driver keeps xo clock enabled until the driver receives "handover" irq, in order to allow ADSP processor to vote for xo clock with rpm. Signed-off-by: Sarangdhar Joshi <spjoshi@codeaurora.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: adsp-pil: fix recursive dependencyArnd Bergmann2016-11-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The newly added driver tries to 'select' a symbol that it has an implicit dependency on, which confuses Kconfig: subsection "Kconfig recursive dependency limitations" drivers/remoteproc/Kconfig:3: symbol REMOTEPROC is selected by QCOM_ADSP_PIL As REMOTEPROC is itself user-visible, we clearly should not select it from a driver, removing the line fixes the problem. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | Merge branch 'topic/st_fdma' of ↵Bjorn Andersson2016-11-167-9/+1533
|\| | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/slave-dma into rproc-next
| * dmaengine: st_fdma: Revert: Update st_fdma to 'depends on REMOTEPROC'Vinod Koul2016-11-141-1/+0
| | | | | | | | | | | | | | | | This reverts commit 184e13969fe68e57f863be7b6daf202f2cc18818 ("dmaengine: st_fdma: Update st_fdma to 'depends on REMOTEPROC'") due to objection from Bjorn. Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * dmaengine: st_fdma: Update st_fdma to 'depends on REMOTEPROC'.Peter Griffin2016-11-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | During randconfig builds you can get the following warning "warning: (ST_FDMA) selects ST_SLIM_REMOTEPROC which has unmet direct dependencies (REMOTEPROC)" randconfig builds should always build without any warnings so update fdma to depend on REMOTEPROC so this can not happen. Signed-off-by: Peter Griffin <peter.griffin@linaro.org> Reported-by: Arnd Bergmann <arnd@arndb.de> Tested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * dmaengine: st_fdma: Fix the error return code in st_fdma_probe()Wei Yongjun2016-10-191-1/+1
| | | | | | | | | | | | | | | | | | | | In case of error, the function st_slim_rproc_alloc() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * dmaengine: st_fdma: fix uninitialized variable accessArnd Bergmann2016-10-191-12/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The newly added st_fdma driver introduces a build warning for allmodconfig when we add '-Wmaybe-uninitialized': drivers/dma/st_fdma.c: In function 'st_fdma_probe': drivers/dma/st_fdma.c:777:5: error: 'ret' may be used uninitialized in this function [-Werror=maybe-uninitialized] The warning is correct, though this can't happen in practice as the check is redundant (we don't get to this function if the pointer is NULL). Even if the function were called with a NULL of_node, the check is not needed because of_property_read_u32 can deal with a NULL argument by returning an error. Removing the unnecessary code simplifies the function and avoids the condition that we get the warning for. Fixes: 6b4cd727eaf1 ("dmaengine: st_fdma: Add STMicroelectronics FDMA engine driver support") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * dmaengine: st_fdma: Add STMicroelectronics FDMA engine driver supportPeter Griffin2016-10-183-0/+913
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for the Flexible Direct Memory Access (FDMA) core driver. The FDMA is a slim core CPU with a dedicated firmware. It is a general purpose DMA controller capable of supporting 16 independent DMA channels. Data moves maybe from memory to memory or between memory and paced latency critical real time targets and it is found on al STi based chipsets. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * dmaengine: st_fdma: Add STMicroelectronics FDMA driver header filePeter Griffin2016-10-181-0/+249
| | | | | | | | | | | | | | | | | | This header file will also be used by the dma xbar driver in the future. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * remoteproc: Update Kconfig setup to 'depends on REMOTEPROC'Peter Griffin2016-10-181-8/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make REMOTEPROC core a selectable kconfig option, and update remoteproc client drivers to 'depends on' the core. This avoids some nasty Kconfig recursive dependency issues. Also when using menuconfig client drivers will be hidden until the core has been enabled. Documentation/kbuild/kconfig-language.txt: Note: select should be used with care. select will force a symbol to a value without visiting the dependencies. By abusing select you are able to select a symbol FOO even if FOO depends on BAR that is not set. In general use select only for non-visible symbols (no prompts anywhere) and for symbols with no dependencies. That will limit the usefulness but on the other hand avoid the illegal configurations all over. Signed-off-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * remoteproc: st_slim_rproc: add a slimcore rproc driverPeter Griffin2016-10-183-2/+370
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | slim core is used as a basis for many IPs in the STi chipsets such as fdma and demux. To avoid duplicating the elf loading code in each device driver a slim rproc driver has been created. This driver is designed to be used by other device drivers such as fdma, or demux whose IP is based around a slim core. The device driver can call slim_rproc_alloc() to allocate a slim rproc and slim_rproc_put() when finished. This driver takes care of ioremapping the slim registers (dmem, imem, slimcore, peripherals), whose offsets and sizes can change between IP's. It also obtains and enables any clocks used by the device. This approach avoids having a double mapping of the registers as slim_rproc does not register its own platform device. It also maps well to device tree abstraction as it allows us to have one dt node for the whole device. All of the generic rproc elf loading code can be reused, and we provide start() stop() hooks to start and stop the slim core once the firmware has been loaded. This has been tested successfully with fdma driver. Signed-off-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* | remoteproc: Introduce Qualcomm ADSP PILBjorn Andersson2016-11-153-0/+411
| | | | | | | | | | | | | | | | | | The Qualcomm ADSP Peripheral Image Loader is used on a variety of different Qualcomm platforms for loading firmware into and controlling the Hexagon based ADSP. Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: qcom_wcnss: Fix circular module dependencyBjorn Andersson2016-11-145-16/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The tie between the main WCNSS driver and the IRIS driver causes a circular dependency between the two modules. Neither part makes sense to have on their own so lets merge them into one module. For the sake of picking up the clock and regulator resources described in the iris of_node we need an associated struct device. But, to keep the size of the patch down we continue to represent the IRIS part as its own platform_driver, within the same module, rather than setting up a dummy device. Fixes: aed361adca9f ("remoteproc: qcom: Introduce WCNSS peripheral image loader") Reported-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: Merge table_ptr and cached_table pointersBjorn Andersson2016-11-141-16/+10
| | | | | | | | | | | | | | | | | | | | | | | | As all vdev resources are allocated before we boot the remote processor we no longer need to support modifying the resource table while the remote is running. This saves us from the table_ptr dance, but more importantly allow the remote processor to enable security lock down of the loaded table memory region. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: Remove custom vdev handler listBjorn Andersson2016-11-141-11/+0
| | | | | | | | | | | | | | The vdev handler is now just another resource allocator, so handle all resource types in a single pass. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: Update max_notifyid as we allocate vringsBjorn Andersson2016-11-141-10/+5
| | | | | | | | | | | | | | | | Vrings are now allocated as we parse the resource table, before we boot the rproc or register any virtio devices, so it's safe to bump max_notifyid as part of this process. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: Decouple vdev resources and devicesBjorn Andersson2016-11-141-15/+20
| | | | | | | | | | | | | | | | Represent the virtio device part of the vdev resources as remoteproc subdevices to finalize the decoupling of the virtio resource and device handling. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: Further extend the vdev life cycleBjorn Andersson2016-11-141-1/+6
| | | | | | | | | | | | | | | | Tie the vdev (and hence vring) life cycle to the resource parsing and resource cleanup operations, allowing us to safely register and unregister virtio devices on the go. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: virtio: Anchor vring life cycle in vdevBjorn Andersson2016-11-142-6/+21
| | | | | | | | | | | | | | | | | | Instead of having the vrings being allocated and freed as they are requested by the virtio device tie their life cycle to the vdev resource. This allows us to decouple the vdev resource management from the virtio device management. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: Assign kref to rproc_vdevBjorn Andersson2016-11-143-4/+17
| | | | | | | | | | | | No functional change Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: wcnss: Bond SMD edge to remoteprocBjorn Andersson2016-11-141-0/+27
| | | | | | | | | | | | | | | | | | | | | | | | Allow the wcnss smd edge to be described as a child of the wcnss remoteproc node and make the edge life cycle follow the running state of the remoteproc. This bond is necessary to clean up the smd state when the remote processor is suddenly removed, and in some cases even when it shut down in a controlled fasion. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | rpmsg: smd: Expose edge registration functionsBjorn Andersson2016-11-141-0/+1
| | | | | | | | | | | | | | | | The edge registration functions is to be used from a remoteproc driver to register and unregister an edge as the remote processor comes and goes. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: Introduce subdevicesBjorn Andersson2016-11-091-0/+72
| | | | | | | | | | | | | | | | | | A subdevice is an abstract entity that can be used to tie actions to the booting and shutting down of a remote processor. The subdevice object is expected to be embedded in concrete implementations, allowing for a variety of use cases to be implemented. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: st: Fix error return code in st_rproc_probe()Wei Yongjun2016-10-311-1/+3
| | | | | | | | | | | | | | | | | | Fix to return a negative error code from the st_rproc_state() error handling case instead of 0, as done elsewhere in this function. Fixes: 63edb0310a5c ("remoteproc: Supply controller driver for ST's Remote Processors") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: debugfs: Remove state entry which is duplicated is sysfsMatt Redfearn2016-10-311-71/+0
| | | | | | | | | | | | | | | | Since there is now an always available state file in sysfs with the same function as this one in debugfs, remove the redundant entry. Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: Add a sysfs interface for firmware and stateMatt Redfearn2016-10-314-0/+160
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a sysfs interface to rproc allowing the firmware name and processor state to be changed dynamically. State was previously available in debugfs, and is replicated here. The firmware file allows retrieval of the running firmware name, and a new one to be specified at run time, so long as the remote processor has been stopped. Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: qcom: wcnss_iris: Fix module autoloadJavier Martinez Canillas2016-10-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the driver is built as a module, autoload won't work because the module alias information is not filled. So user-space can't match the registered device with the corresponding module. Export the module alias information using the MODULE_DEVICE_TABLE() macro. Before this patch: $ modinfo drivers/remoteproc/qcom_wcnss_iris.ko | grep alias $ After this patch: $ modinfo drivers/remoteproc/qcom_wcnss_iris.ko | grep alias alias: of:N*T*Cqcom,wcn3680C* alias: of:N*T*Cqcom,wcn3680 alias: of:N*T*Cqcom,wcn3660C* alias: of:N*T*Cqcom,wcn3660 alias: of:N*T*Cqcom,wcn3620C* alias: of:N*T*Cqcom,wcn3620 Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: qcom: wcnss: Fix module autoloadJavier Martinez Canillas2016-10-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the driver is built as a module, autoload won't work because the module alias information is not filled. So user-space can't match the registered device with the corresponding module. Export the module alias information using the MODULE_DEVICE_TABLE() macro. Before this patch: $ modinfo drivers/remoteproc/qcom_wcnss.ko | grep alias $ After this patch: $ modinfo drivers/remoteproc/qcom_wcnss.ko | grep alias alias: of:N*T*Cqcom,pronto-v2-pilC* alias: of:N*T*Cqcom,pronto-v2-pil alias: of:N*T*Cqcom,pronto-v1-pilC* alias: of:N*T*Cqcom,pronto-v1-pil alias: of:N*T*Cqcom,riva-pilC* alias: of:N*T*Cqcom,riva-pil Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: qcom: q6v5_pil: Fix module autoloadJavier Martinez Canillas2016-10-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the driver is built as a module, autoload won't work because the module alias information is not filled. So user-space can't match the registered device with the corresponding module. Export the module alias information using the MODULE_DEVICE_TABLE() macro. Before this patch: $ modinfo drivers/remoteproc/qcom_q6v5_pil.ko | grep alias $ After this patch: $ modinfo drivers/remoteproc/qcom_q6v5_pil.ko | grep alias alias: of:N*T*Cqcom,q6v5-pilC* alias: of:N*T*Cqcom,q6v5-pil Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* | remoteproc: Keep local copy of firmware nameMatt Redfearn2016-10-181-15/+16
|/ | | | | | | | | | | | | Storage of the firmware name was inconsistent, either storing a pointer to a name stored with unknown ownership, or a variable length tacked onto the end of the struct proc allocated in rproc_alloc. In preparation for allowing the firmware of an already allocated struct rproc to be changed, instead always keep a locally maintained copy of the firmware name. Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
* Merge tag 'gcc-plugins-v4.9-rc1' of ↵Linus Torvalds2016-10-151-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull gcc plugins update from Kees Cook: "This adds a new gcc plugin named "latent_entropy". It is designed to extract as much possible uncertainty from a running system at boot time as possible, hoping to capitalize on any possible variation in CPU operation (due to runtime data differences, hardware differences, SMP ordering, thermal timing variation, cache behavior, etc). At the very least, this plugin is a much more comprehensive example for how to manipulate kernel code using the gcc plugin internals" * tag 'gcc-plugins-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: latent_entropy: Mark functions with __latent_entropy gcc-plugins: Add latent_entropy plugin
| * latent_entropy: Mark functions with __latent_entropyEmese Revfy2016-10-101-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The __latent_entropy gcc attribute can be used only on functions and variables. If it is on a function then the plugin will instrument it for gathering control-flow entropy. If the attribute is on a variable then the plugin will initialize it with random contents. The variable must be an integer, an integer array type or a structure with integer fields. These specific functions have been selected because they are init functions (to help gather boot-time entropy), are called at unpredictable times, or they have variable loops, each of which provide some level of latent entropy. Signed-off-by: Emese Revfy <re.emese@gmail.com> [kees: expanded commit message] Signed-off-by: Kees Cook <keescook@chromium.org>
* | Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds2016-10-1511-255/+467
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MIPS updates from Ralf Baechle: "This is the main MIPS pull request for 4.9: MIPS core arch code: - traps: 64bit kernels should read CP0_EBase 64bit - traps: Convert ebase to KSEG0 - c-r4k: Drop bc_wback_inv() from icache flush - c-r4k: Split user/kernel flush_icache_range() - cacheflush: Use __flush_icache_user_range() - uprobes: Flush icache via kernel address - KVM: Use __local_flush_icache_user_range() - c-r4k: Fix flush_icache_range() for EVA - Fix -mabi=64 build of vdso.lds - VDSO: Drop duplicated -I*/-E* aflags - tracing: move insn_has_delay_slot to a shared header - tracing: disable uprobe/kprobe on compact branch instructions - ptrace: Fix regs_return_value for kernel context - Squash lines for simple wrapper functions - Move identification of VP(E) into proc.c from smp-mt.c - Add definitions of SYNC barrierstype values - traps: Ensure full EBase is written - tlb-r4k: If there are wired entries, don't use TLBINVF - Sanitise coherentio semantics - dma-default: Don't check hw_coherentio if device is non-coherent - Support per-device DMA coherence - Adjust MIPS64 CAC_BASE to reflect Config.K0 - Support generating Flattened Image Trees (.itb) - generic: Introduce generic DT-based board support - generic: Convert SEAD-3 to a generic board - Enable hardened usercopy - Don't specify STACKPROTECTOR in defconfigs Octeon: - Delete dead code and files across the platform. - Change to use all memory into use by default. - Rename upper case variables in setup code to lowercase. - Delete legacy hack for broken bootloaders. - Leave maintaining the link state to the actual ethernet/PHY drivers. - Add DTS for D-Link DSR-500N. - Fix PCI interrupt routing on D-Link DSR-500N. Pistachio: - Remove ANDROID_TIMED_OUTPUT from defconfig TX39xx: - Move GPIO setup from .mem_setup() to .arch_init() - Convert to Common Clock Framework TX49xx: - Move GPIO setup from .mem_setup() to .arch_init() - Convert to Common Clock Framework txx9wdt: - Add missing clock (un)prepare calls for CCF BMIPS: - Add PW, GPIO SDHCI and NAND device node names - Support APPENDED_DTB - Add missing bcm97435svmb to DT_NONE - Rename bcm96358nb4ser to bcm6358-neufbox4-sercom - Add DT examples for BCM63268, BCM3368 and BCM6362 - Add support for BCM3368 and BCM6362 PCI - Reduce stack frame usage - Use struct list_head lists - Support for CONFIG_PCI_DOMAINS_GENERIC - Make pcibios_set_cache_line_size an initcall - Inline pcibios_assign_all_busses - Split pci.c into pci.c & pci-legacy.c - Introduce CONFIG_PCI_DRIVERS_LEGACY - Support generic drivers CPC - Convert bare 'unsigned' to 'unsigned int' - Avoid lock when MIPS CM >= 3 is present GIC: - Delete unused file smp-gic.c mt7620: - Delete unnecessary assignment for the field "owner" from PCI BCM63xx: - Let clk_disable() return immediately if clk is NULL pm-cps: - Change FSB workaround to CPU blacklist - Update comments on barrier instructions - Use MIPS standard lightweight ordering barrier - Use MIPS standard completion barrier - Remove selection of sync types - Add MIPSr6 CPU support - Support CM3 changes to Coherence Enable Register SMP: - Wrap call to mips_cpc_lock_other in mips_cm_lock_other - Introduce mechanism for freeing and allocating IPIs cpuidle: - cpuidle-cps: Enable use with MIPSr6 CPUs. SEAD3: - Rewrite to use DT and generic kernel feature. USB: - host: ehci-sead3: Remove SEAD-3 EHCI code FBDEV: - cobalt_lcdfb: Drop SEAD3 support dt-bindings: - Document a binding for simple ASCII LCDs auxdisplay: - img-ascii-lcd: driver for simple ASCII LCD displays irqchip i8259: - i8259: Add domain before mapping parent irq - i8259: Allow platforms to override poll function - i8259: Remove unused i8259A_irq_pending Malta: - Rewrite to use DT of/platform: - Probe "isa" busses by default CM: - Print CM error reports upon bus errors Module: - Migrate exception table users off module.h and onto extable.h - Make various drivers explicitly non-modular: - Audit and remove any unnecessary uses of module.h mailmap: - Canonicalize to Qais' current email address. Documentation: - MIPS supports HAVE_REGS_AND_STACK_ACCESS_API Loongson1C: - Add CPU support for Loongson1C - Add board support - Add defconfig - Add RTC support for Loongson1C board All this except one Documentation fix has sat in linux-next and has survived Imagination's automated build test system" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (127 commits) Documentation: MIPS supports HAVE_REGS_AND_STACK_ACCESS_API MIPS: ptrace: Fix regs_return_value for kernel context MIPS: VDSO: Drop duplicated -I*/-E* aflags MIPS: Fix -mabi=64 build of vdso.lds MIPS: Enable hardened usercopy MIPS: generic: Convert SEAD-3 to a generic board MIPS: generic: Introduce generic DT-based board support MIPS: Support generating Flattened Image Trees (.itb) MIPS: Adjust MIPS64 CAC_BASE to reflect Config.K0 MIPS: Print CM error reports upon bus errors MIPS: Support per-device DMA coherence MIPS: dma-default: Don't check hw_coherentio if device is non-coherent MIPS: Sanitise coherentio semantics MIPS: PCI: Support generic drivers MIPS: PCI: Introduce CONFIG_PCI_DRIVERS_LEGACY MIPS: PCI: Split pci.c into pci.c & pci-legacy.c MIPS: PCI: Inline pcibios_assign_all_busses MIPS: PCI: Make pcibios_set_cache_line_size an initcall MIPS: PCI: Support for CONFIG_PCI_DOMAINS_GENERIC MIPS: PCI: Use struct list_head lists ...
| * | of/platform: Probe "isa" busses by defaultPaul Burton2016-10-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 44a7185c2ae6 ("of/platform: Add common method to populate default bus") platforms calling of_platform_bus_probe from an initcall is either a rather unsafe race with of_platform_default_populate_init or a no-op. The MIPS Malta board needs to probe devices under an ISA bus, which we do support in the of_busses array but until now haven't included in of_default_bus_match_table. Add an "isa" entry to of_default_bus_match_table such that we can just accept use of of_platform_default_populate_init & remove the Malta-specific match table in a later patch. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Acked-by: Rob Herring <robh@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14275/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | irqchip: i8259: Remove unused i8259A_irq_pendingPaul Burton2016-10-061-18/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The i8259A_irq_pending function is unused. Remove the dead code. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14271/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | irqchip: i8259: Allow platforms to override poll functionPaul Burton2016-10-061-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The default i8259 polling function (i8259_irq) is nicely generic but is fairly costly. Platforms often provide an alternative means of polling for an i8259 interrupt, and when using the i8259 without device tree have typically just chained its parent interrupt to their own handler function. In order to allow for platform-specific polling functions to be used in cases where the driver is probed via device tree, provide an i8259_set_poll function that accepts a pointer to an alternative poll function that will override the default. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14270/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | irqchip: i8259: Add domain before mapping parent irqPaul Burton2016-10-061-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mapping the parent IRQ will use a virq number which may conflict with the hardcoded I8259A_IRQ_BASE..I8259A_IRQ_BASE+15 range that the i8259 driver expects to be free. If this occurs then we'll hit errors when adding the i8259 IRQ domain, since one of its virq numbers will already be in use. Avoid this by adding the i8259 domain before mapping the parent IRQ, such that the i8259 virq numbers become used before the parent interrupt controller gets a chance to use any of them. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14269/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | auxdisplay: img-ascii-lcd: driver for simple ASCII LCD displaysPaul Burton2016-10-063-0/+453
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a driver for simple ASCII LCD displays found on the MIPS Boston, Malta & SEAD3 development boards. The Boston display is an independent memory mapped device with a simple memory mapped 8 byte register space containing the 8 ASCII characters to display. The Malta display is exposed as part of the Malta board registers, and provides 8 registers each of which corresponds to one of the ASCII characters to display. The SEAD3 display is slightly more complex, exposing an interface to an S6A0069 LCD controller via registers provided by the boards CPLD. However although the displays differ in their register interface, we require similar functionality on each board so abstracting away the differences within a single driver allows us to share a significant amount of code & ensure consistent behaviour. The driver displays the Linux kernel version as the default message, but allows the message to be changed via a character device. Messages longer then the number of characters that the display can show will scroll. This provides different behaviour to the existing LCD display code for the MIPS Malta or MIPS SEAD3 platforms in the following ways: - The default string to display is not "LINUX ON MALTA" or "LINUX ON SEAD3" but "Linux" followed by the version number of the kernel (UTS_RELEASE). - Since that string tends to be significantly longer it scrolls twice as fast, moving every 500ms rather than every 1s. - The LCD won't be updated until the driver is probed, so it doesn't provide the early "LINUX" string. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: Miguel Ojeda Sandonis <miguel.ojeda.sandonis@gmail.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: David S. Miller <davem@davemloft.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14062/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | FBDEV: cobalt_lcdfb: Drop SEAD3 supportPaul Burton2016-10-062-43/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SEAD3 board no longer uses the cobalt_lcdfb driver, so remove the SEAD3-specific code from it. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Ondrej Zary <linux@rainbow-software.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Robert Jarzmik <robert.jarzmik@free.fr> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Simon Horman <horms+renesas@verge.net.au> Cc: linux-mips@linux-mips.org Cc: linux-fbdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14060/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | USB: host: ehci-sead3: Remove SEAD-3 EHCI codePaul Burton2016-10-052-190/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SEAD-3 board is now probing its EHCI controller using the generic EHCI driver & its generic-ehci device tree binding. Remove the unused SEAD-3 specific EHCI code. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: linux-usb@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14052/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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