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* remoteproc: convert to idr_alloc()Tejun Heo2013-02-281-7/+3Star
| | | | | | | | | Convert to the much saner new idr interface. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* remoteproc: don't use idr_remove_all()Tejun Heo2013-02-281-1/+0Star
| | | | | | | | | | idr_destroy() can destroy idr by itself and idr_remove_all() is being deprecated. Drop its usage. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge tag 'virtio-next-for-linus' of ↵Linus Torvalds2013-02-261-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull virtio updates from Rusty Russell: "All trivial, thanks to the stuff which didn't quite make it time" * tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: virtio_console: Initialize guest_connected=true for rproc_serial virtio: use module_virtio_driver. virtio: Add module driver macro for virtio drivers. virtio_console: Use virtio device index to generate port name virtio: make pci_device_id const virtio: make config_ops const virtio-mmio: fix wrong comment about register offset virtio_console: Let unconnected rproc device receive data.
| * virtio: make config_ops constStephen Hemminger2013-02-111-1/+1
| | | | | | | | | | | | | | | | It is just a table of function pointers, make it const for cleanliness and security reasons. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | Merge tag 'multiplatform' of ↵Linus Torvalds2013-02-221-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC multiplatform support from Arnd Bergmann: "Converting more ARM platforms to multiplatform support. This time, OMAP gets converted, which is a major step since this is by far the largest platform in terms of code size. The same thing happens to the vt8500 platform." * tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: net: cwdavinci_cpdma: export symbols for cpsw remoteproc: omap: depend on OMAP_MBOX_FWK [media] davinci: do not include mach/hardware.h ARM: OMAP2+: Make sure files with omap initcalls include soc.h ARM: OMAP2+: Include soc.h to drm.c to fix compiling ARM: OMAP2+: Fix warning for hwspinlock omap_postcore_initcall ARM: multi_v7_defconfig: add ARCH_ZYNQ ARM: multi_v7_defconfig: remove unnecessary CONFIG_GPIOLIB arm: vt8500: Remove remaining mach includes arm: vt8500: Convert debug-macro.S to be multiplatform friendly arm: vt8500: Remove single platform Kconfig options ARM: OMAP2+: Remove now obsolete uncompress.h and debug-macro.S ARM: OMAP2+: Add minimal support for booting vexpress ARM: OMAP2+: Enable ARCH_MULTIPLATFORM support ARM: OMAP2+: Disable code that currently does not work with multiplaform ARM: OMAP2+: Add multiplatform debug_ll support ARM: OMAP: Fix dmaengine init for multiplatform ARM: OMAP: Fix i2c cmdline initcall for multiplatform ARM: OMAP2+: Use omap initcalls ARM: OMAP2+: Limit omap initcalls to omap only on multiplatform kernels
| * | remoteproc: omap: depend on OMAP_MBOX_FWKArnd Bergmann2013-02-151-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch a62a6e98 "ARM: OMAP2+: Disable code that currently does not work with multiplaform" makes the OMAP_MBOX_FWK option depend on !MULTIPLATFORM, which means we cannot simply select that symbol from OMAP_REMOTEPROC. Turning the 'select' into 'depends on' ensures that all dependencies are correct until OMAP_MBOX_FWK loses its dependency. Without this patch, building allmodconfig results in: drivers/remoteproc/omap_remoteproc.c:31:26: fatal error: plat/mailbox.h: No such file or directory Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Ohad Ben-Cohen <ohad@wizery.com>
* / drivers/remoteproc: remove depends on CONFIG_EXPERIMENTALKees Cook2013-01-211-4/+1Star
|/ | | | | | | | | | The CONFIG_EXPERIMENTAL config item has not carried much meaning for a while now and is almost always enabled by default. As agreed during the Linux kernel summit, remove it from any "depends on" lines in Kconfigs. CC: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Drivers: misc: remove __dev* attributes.Greg Kroah-Hartman2013-01-041-3/+3
| | | | | | | | | | | | | | CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2012-12-131-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial branch from Jiri Kosina: "Usual stuff -- comment/printk typo fixes, documentation updates, dead code elimination." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits) HOWTO: fix double words typo x86 mtrr: fix comment typo in mtrr_bp_init propagate name change to comments in kernel source doc: Update the name of profiling based on sysfs treewide: Fix typos in various drivers treewide: Fix typos in various Kconfig wireless: mwifiex: Fix typo in wireless/mwifiex driver messages: i2o: Fix typo in messages/i2o scripts/kernel-doc: check that non-void fcts describe their return value Kernel-doc: Convention: Use a "Return" section to describe return values radeon: Fix typo and copy/paste error in comments doc: Remove unnecessary declarations from Documentation/accounting/getdelays.c various: Fix spelling of "asynchronous" in comments. Fix misspellings of "whether" in comments. eisa: Fix spelling of "asynchronous". various: Fix spelling of "registered" in comments. doc: fix quite a few typos within Documentation target: iscsi: fix comment typos in target/iscsi drivers treewide: fix typo of "suport" in various comments and Kconfig treewide: fix typo of "suppport" in various comments ...
| * treewide: Fix typos in various driversMasanari Iida2012-12-031-2/+2
| | | | | | | | | | | | | | Fix typos in printk within various drivers. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | remoteproc: fix error path of ->find_vqsOhad Ben-Cohen2012-11-291-6/+12
|/ | | | | | | | Eliminate an erroneous invocation of rproc_shutdown inside the error path of rproc_virtio_find_vqs. Reported-by: Ido Yariv <ido@wizery.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
* Merge branch 'virtio-next' of ↵Linus Torvalds2012-10-071-1/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull virtio changes from Rusty Russell: "New workflow: same git trees pulled by linux-next get sent straight to Linus. Git is awkward at shuffling patches compared with quilt or mq, but that doesn't happen often once things get into my -next branch." * 'virtio-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: (24 commits) lguest: fix occasional crash in example launcher. virtio-blk: Disable callback in virtblk_done() virtio_mmio: Don't attempt to create empty virtqueues virtio_mmio: fix off by one error allocating queue drivers/virtio/virtio_pci.c: fix error return code virtio: don't crash when device is buggy virtio: remove CONFIG_VIRTIO_RING virtio: add help to CONFIG_VIRTIO option. virtio: support reserved vqs virtio: introduce an API to set affinity for a virtqueue virtio-ring: move queue_index to vring_virtqueue virtio_balloon: not EXPERIMENTAL any more. virtio-balloon: dependency fix virtio-blk: fix NULL checking in virtblk_alloc_req() virtio-blk: Add REQ_FLUSH and REQ_FUA support to bio path virtio-blk: Add bio-based IO path for virtio-blk virtio: console: fix error handling in init() function tools: Fix pthread flag for Makefile of trace-agent used by virtio-trace tools: Add guest trace agent as a user tool virtio/console: Allocate scatterlist according to the current pipe size ...
| * virtio: support reserved vqsMichael S. Tsirkin2012-09-281-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | virtio network device multiqueue support reserves vq 3 for future use (useful both for future extensions and to make it pretty - this way receive vqs have even and transmit - odd numbers). Make it possible to skip initialization for specific vq numbers by specifying NULL for name. Document this usage as well as (existing) NULL callback. Drivers using this not coded up yet, so I simply tested with virtio-pci and verified that this patch does not break existing drivers. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * virtio-ring: move queue_index to vring_virtqueueJason Wang2012-09-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | Instead of storing the queue index in transport-specific virtio structs, this patch moves them to vring_virtqueue and introduces an helper to get the value. This lets drivers simplify their management and tracing of virtqueues. Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | Merge tag 'remoteproc-for-3.7' of ↵Linus Torvalds2012-10-047-42/+593
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc Pull remoteproc update from Ohad Ben-Cohen: - Remoteproc Recovery - by Fernando Guzman Lugo When a remote processor crash is detected, this mechanism will remove all virtio children devices, wait until their drivers let go, hard reset the remote processor and reload the firmware (resulting in the relevant virtio children devices re-added). Essentially the entire software stack is reset, together with the relevant hardware, so users don't have to reset the entire phone. - STE Modem driver is added - by Sjur Brændeland - OMAP DSP boot address support is added - by Juan Gutierrez - A handful of fixes/cleanups - Sjur Brændeland, Dan Carpenter, Emil Goode * tag 'remoteproc-for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc: remoteproc: Fix use of format specifyer remoteproc: fix a potential NULL-dereference on cleanup remoteproc: select VIRTIO to avoid build breakage remoteproc: return -EFAULT on copy_from_user failure remoteproc: snprintf() can return more than was printed remoteproc: Add STE modem driver remtoteproc: maintain max notifyid remoteproc: create a 'recovery' debugfs entry remoteproc: add actual recovery implementation remoteproc: add rproc_report_crash function to notify rproc crashes remoteproc: Add dependency to HAS_DMA remoteproc/omap: set bootaddr support
| * | remoteproc: Fix use of format specifyerEmil Goode2012-10-021-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The dma_addr_t type can be either u32 or u64 depending on the configuration. We should use a format specifyer for the larger type and explicitly cast to it. Sparse warnings: drivers/remoteproc/remoteproc_core.c:234:2: warning: format ‘%x’ expects argument of type ‘unsigned int’, but argument 6 has type ‘dma_addr_t’ [-Wformat] drivers/remoteproc/remoteproc_core.c:596:2: warning: format ‘%x’ expects argument of type ‘unsigned int’, but argument 5 has type ‘dma_addr_t’ [-Wformat] drivers/remoteproc/remoteproc_core.c:634:3: warning: format ‘%x’ expects argument of type ‘unsigned int’, but argument 5 has type ‘dma_addr_t’ [-Wformat] Signed-off-by: Emil Goode <emilgoode@gmail.com> [fix commit log typos] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * | remoteproc: fix a potential NULL-dereference on cleanupDan Carpenter2012-10-021-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We only need to allocate mapping if there is an IOMMU domain. Otherwise, when the mappings are released, the assumption that an IOMMU domain is there will crash and burn. CC: stable@vger.kernel.org Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> [ohad: revise commit log] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * | remoteproc: select VIRTIO to avoid build breakageOhad Ben-Cohen2012-10-021-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/built-in.o: In function `rproc_virtio_finalize_features': remoteproc_virtio.c:(.text+0x2f9a02): undefined reference to `vring_transport_features' drivers/built-in.o: In function `rproc_virtio_del_vqs': remoteproc_virtio.c:(.text+0x2f9a74): undefined reference to `vring_del_virtqueue' drivers/built-in.o: In function `rproc_virtio_find_vqs': remoteproc_virtio.c:(.text+0x2f9c44): undefined reference to `vring_new_virtqueue' drivers/built-in.o: In function `rproc_add_virtio_dev': (.text+0x2f9e2c): undefined reference to `register_virtio_device' drivers/built-in.o: In function `rproc_vq_interrupt': (.text+0x2f9db7): undefined reference to `vring_interrupt' drivers/built-in.o: In function `rproc_remove_virtio_dev': (.text+0x2f9e9f): undefined reference to `unregister_virtio_device' Cc: stable@vger.kernel.org Reported-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * | remoteproc: return -EFAULT on copy_from_user failureDan Carpenter2012-09-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | copy_from_user() returns the number of bytes remaining to be copied, but we want to return an error code here. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * | remoteproc: snprintf() can return more than was printedDan Carpenter2012-09-301-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | snprintf() returns the number of characters which would have been printed if there were enough space. For example, on the first print if we fill up the 28 character string then it would return a number more than 30. Use scnprintf() instead because that returns the actual number of characters printed. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * | remoteproc: Add STE modem driverSjur Brændeland2012-09-223-0/+334
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for the STE modem shared memory driver. This driver hooks into the remoteproc framework in order to manage configuration and the virtio devices. This driver adds custom firmware handlers, because STE modem uses a custom firmware layout. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> cc: Linus Walleij <linus.walleij@linaro.org> cc: Alan Cox <alan@lxorguk.ukuu.org.uk> [ohad: validate mdev->ops, move setup() to probe/remove, trivial style changes] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * | remtoteproc: maintain max notifyidSjur Brændeland2012-09-181-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some of the rproc drivers (STE modem specifically) needs to know the range of the notification IDs used for notifying the device. Maintain a variable in struct rproc holding the largest allocated notification id, so low-level rproc drivers could access it. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> [ohad: rebase, slightly edit commit log] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * | remoteproc: create a 'recovery' debugfs entryFernando Guzman Lugo2012-09-182-1/+83
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a 'recovery' debugfs entry to dynamically disable/enable recovery at runtime. This is useful when one is trying to debug an rproc crash; without it, a recovery will immediately take place, making it harder to debug the crash. Contributions from Subramaniam Chanderashekarapuram. Examples: - disabling recovery: $ echo disabled > <debugfs>/remoteproc/remoteproc0/recovery - in case you want to recover a crash, but keep recovery disabled (useful in debugging sessions when you expect additional crashes you want to debug): $ echo recover > <debugfs>/remoteproc/remoteproc0/recovery - enabling recovery: $ echo enabled > <debugfs>/remoteproc/remoteproc0/recovery Signed-off-by: Fernando Guzman Lugo <fernando.lugo@ti.com> [ohad: some white space, commentary and commit log changes] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * | remoteproc: add actual recovery implementationFernando Guzman Lugo2012-09-182-22/+63
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add rproc_trigger_recovery() which takes care of the recovery itself, by removing, and re-adding, all of the remoteproc's virtio devices. This resets all virtio users of the remote processor, during which the remote processor is powered off and on again. Signed-off-by: Fernando Guzman Lugo <fernando.lugo@ti.com> [ohad: introduce rproc_add_virtio_devices to avoid 1.copying code 2.anomaly] [ohad: some white space, naming and commit log changes] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * | remoteproc: add rproc_report_crash function to notify rproc crashesFernando Guzman Lugo2012-09-181-4/+75
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow low-level remoteproc drivers to report rproc crashes by exporting a new rproc_report_crash() function (invoking this from non-rproc drivers is probably wrong, and should be carefully scrutinized if ever needed). rproc_report_crash() can be called from any context; it offloads the tasks of handling the crash to a separate thread. Handling the crash from a separate thread is helpful because: - Ability to call invoke rproc_report_crash() from atomic context, due to the fact that many crashes trigger an interrupt, so this function can be called directly from ISR context. - Avoiding deadlocks which could happen if rproc_report_crash() is called from a function which indirectly holds the rproc lock. Handling the crash might involve: - Remoteproc register dump - Remoteproc stack dump - Remoteproc core dump - Saving Remoteproc traces so they can be read after the crash - Reseting the remoteproc in order to make it functional again (hard recovery) Right now, we only print the crash type which was detected, and only the mmufault type is supported. Remoteproc low-level drivers can add more types when needed. Signed-off-by: Fernando Guzman Lugo <fernando.lugo@ti.com> [ohad: some commentary, white space and commit log changes] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * | remoteproc: Add dependency to HAS_DMASjur Brændeland2012-09-181-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | Remoteproc relies on HAS_DMA, add this dependency in Kconfig. Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * | remoteproc/omap: set bootaddr supportJuan Gutierrez2012-09-111-0/+3
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some remote processors (like OMAP4's DSP) require we explicitly set a boot address from which they'd start executing code when taken out of reset. Support for this is now being added to the omap-specific remoteproc driver through a set_bootaddr function in the platform data which, if needed, must be set according to the backend remote processor. For OMAP4's dsp we can use the following control function: .set_bootaddr = omap_ctrl_write_dsp_boot_addr Signed-off-by: Juan Gutierrez <jgutierrez@ti.com> Signed-off-by: Suman Anna <s-anna@ti.com> [ohad: slight changes to the commit log] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
* / ARM: omap: move platform_data definitionsArnd Bergmann2012-09-191-1/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Platform data for device drivers should be defined in include/linux/platform_data/*.h, not in the architecture and platform specific directories. This moves such data out of the omap include directories Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Tony Lindgren <tony@atomide.com> Cc: Kevin Hilman <khilman@ti.com> Cc: "Benoît Cousson" <b-cousson@ti.com> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Ohad Ben-Cohen <ohad@wizery.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Omar Ramirez Luna <omar.ramirez@ti.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Peter Ujfalusi <peter.ujfalusi@ti.com> Cc: Jarkko Nikula <jarkko.nikula@bitmer.com> Cc: Liam Girdwood <lrg@ti.com> Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Cc: Jean Pihet <j-pihet@ti.com> Cc: J Keerthy <j-keerthy@ti.com> Cc: linux-omap@vger.kernel.org
* Merge tag 'remoteproc-for-3.6' of ↵Linus Torvalds2012-07-277-561/+587
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc Pull remoteproc update from Ohad Ben-Cohen: - custom binary format support from Sjur Brændeland - groundwork for recovery and runtime pm support - some cleanups and API simplifications Fix up conflicts in drivers/remoteproc/remoteproc_core.c due to clashes with earlier cleanups by Sjur Brændeland (with part of the cleanups moved into the new remoteproc_elf_loader.c file). * tag 'remoteproc-for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc: MAINTAINERS: add remoteproc's git remoteproc: Support custom firmware handlers remoteproc: Move Elf related functions to separate file remoteproc: Add function rproc_get_boot_addr remoteproc: Pass struct fw to load_segments and find_rsc_table. remoteproc: adopt the driver core's alloc/add/del/put naming remoteproc: remove the get_by_name/put API remoteproc: support non-iommu carveout assignment remoteproc: simplify unregister/free interfaces remoteproc: remove the now-redundant kref remoteproc: maintain a generic child device for each rproc remoteproc: allocate vrings on demand, free when not needed
| * remoteproc: Support custom firmware handlersSjur Brændeland2012-07-153-16/+77
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Firmware handling is made customizable. This is done by creating a separate ops structure for the firmware functions that depends on a particular firmware format (such as ELF). The ELF functions are default used unless the HW driver explicitly injects another firmware handler by updating rproc->fw_ops. The function rproc_da_to_va() is exported, as custom firmware handlers may need to use this function. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> [ohad: namespace fixes, whitespace fixes, style fixes] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * remoteproc: Move Elf related functions to separate fileSjur Brændeland2012-07-154-248/+300
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Prepare for introduction of custom firmware loaders by moving all ELF related handling into a separate file. The functions: rproc_find_rsc_table(), rproc_fw_sanity_check(), rproc_find_rsc_table() and rproc_get_boot_addr() are moved to the new file remoteproc_elf_loader.c. The function rproc_da_to_va() is made non-static and is declared in remoteproc_internal.h No functional changes are introduced in this patch. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> [ohad: rebase, fix kerneldoc, put prototypes in remoteproc_internal.h] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * remoteproc: Add function rproc_get_boot_addrSjur Brændeland2012-07-151-9/+19
| | | | | | | | | | | | | | | | | | | | | | | | Prepare for introduction of custom firmware loaders by moving the function operating on ELF data-structures into separate functions. Move lookup of the boot_addr in the ELF binary to the function rproc_get_boot_addr(). Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> [rproc_get_boot_addr's kerneldoc: add missing @rproc line] [rproc_get_boot_addr's kerneldoc: minor style changes] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * remoteproc: Pass struct fw to load_segments and find_rsc_table.Sjur Brændeland2012-07-151-12/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | Prepare for introduction of custom firmware loaders by changing the functions rproc_find_rcs_table() and rproc_load_segments() to use struct firmware as parameter. When the custom loader framework is introduced all calls into the firmware specific function must use struct firmware as parameter. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * remoteproc: adopt the driver core's alloc/add/del/put namingOhad Ben-Cohen2012-07-052-20/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To make remoteproc's API more intuitive for developers, we adopt the driver core's naming, i.e. alloc -> add -> del -> put. We'll also add register/unregister when their first user shows up. Otherwise - there's no functional change here. Suggested by Russell King <linux@arm.linux.org.uk>. Cc: Russell King <linux@arm.linux.org.uk> Cc: Fernando Guzman Lugo <fernando.lugo@ti.com> Cc: Sjur Brændeland <sjur.brandeland@stericsson.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * remoteproc: remove the get_by_name/put APIOhad Ben-Cohen2012-07-051-130/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove rproc_get_by_name() and rproc_put(), and the associated remoteproc infrastructure that supports it (i.e. klist and friends), because: 1. No one uses them 2. Using them is highly discouraged, and any potential user will be deeply scrutinized and encouraged to move. If a user, that absolutely can't live with the direct boot/shutdown model, does show up one day, then bringing this functionality back is going to be trivial. At this point though, keeping this functionality around is way too much of a maintenance burden. Cc: Sjur Brændeland <sjur.brandeland@stericsson.com> Cc: Loic Pallardy <loic.pallardy@stericsson.com> Cc: Ludovic BARRE <ludovic.barre@stericsson.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Fernando Guzman Lugo <fernando.lugo@ti.com> Cc: Suman Anna <s-anna@ti.com> Cc: Mark Grosen <mgrosen@ti.com> Acked-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * remoteproc: support non-iommu carveout assignmentOhad Ben-Cohen2012-07-051-15/+19
| | | | | | | | | | | | | | Publish carveout addresses on non-iommu setups too. Reported-and-acked-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * remoteproc: simplify unregister/free interfacesOhad Ben-Cohen2012-07-052-18/+12Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Simplify the unregister/free interfaces, and make them easier to understand and use, by moving to a symmetric and consistent alloc() -> register() -> unregister() -> free() flow. To create and register an rproc instance, one needed to invoke rproc_alloc() followed by rproc_register(). To unregister and free an rproc instance, one now needs to invoke rproc_unregister() followed by rproc_free(). Cc: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * remoteproc: remove the now-redundant krefOhad Ben-Cohen2012-07-052-43/+15Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that every rproc instance contains a device, we don't need a kref anymore to maintain the refcount of the rproc instances: that's what device are good with! This patch removes the now-redundant kref, and switches to {get, put}_device instead of kref_{get, put}. We also don't need the kref's release function anymore, and instead, we just utilize the class's release handler (which is now responsible for all memory de-allocations). Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Fernando Guzman Lugo <fernando.lugo@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * remoteproc: maintain a generic child device for each rprocOhad Ben-Cohen2012-07-054-58/+111
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For each registered rproc, maintain a generic remoteproc device whose parent is the low level platform-specific device (commonly a pdev, but it may certainly be any other type of device too). With this in hand, the resulting device hierarchy might then look like: omap-rproc.0 | - remoteproc0 <---- new ! | - virtio0 | - virtio1 | - rpmsg0 | - rpmsg1 | - rpmsg2 Where: - omap-rproc.0 is the low level device that's bound to the driver which invokes rproc_register() - remoteproc0 is the result of this patch, and will be added by the remoteproc framework when rproc_register() is invoked - virtio0 and virtio1 are vdevs that are registered by remoteproc when it realizes that they are supported by the firmware of the physical remote processor represented by omap-rproc.0 - rpmsg0, rpmsg1 and rpmsg2 are rpmsg devices that represent rpmsg channels, and are registerd by the rpmsg bus when it gets notified about their existence Technically, this patch: - changes 'struct rproc' to contain this generic remoteproc.x device - creates a new "remoteproc" type, to which this new generic remoteproc.x device belong to. - adds a super simple enumeration method for the indices of the remoteproc.x devices - updates all dev_* messaging to use the generic remoteproc.x device instead of the low level platform-specific device - updates all dma_* allocations to use the parent of remoteproc.x (where the platform-specific memory pools, most commonly CMA, are to be found) Adding this generic device has several merits: - we can now add remoteproc runtime PM support simply by hooking onto the new "remoteproc" type - all remoteproc log messages will now carry a common name prefix instead of having a platform-specific one - having a device as part of the rproc struct makes it possible to simplify refcounting (see subsequent patch) Thanks to Stephen Boyd <sboyd@codeaurora.org> for suggesting and discussing these ideas in one of the remoteproc review threads and to Fernando Guzman Lugo <fernando.lugo@ti.com> for trying them out with the (upcoming) runtime PM support for remoteproc. Cc: Fernando Guzman Lugo <fernando.lugo@ti.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
| * remoteproc: allocate vrings on demand, free when not neededOhad Ben-Cohen2012-07-043-57/+67
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Dynamically allocate the vrings' DMA when the remote processor is about to be powered on (i.e. when ->find_vqs() is invoked), and release them as soon as it is powered off (i.e. when ->del_vqs() is invoked). The obvious and immediate benefit is better memory utilization, since memory for the vrings is now only allocated when the relevant remote processor is used. Additionally, this approach also makes recovery of a (crashing) remote processor easier: one just needs to remove the relevant vdevs, and the entire vrings cleanup takes place automagically. Tested-by: Fernando Guzman Lugo <fernando.lugo@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
* | remoteproc: fix missing CONFIG_FW_LOADER configurationsOhad Ben-Cohen2012-07-041-0/+1
| | | | | | | | | | | | | | | | | | | | Remoteproc requires user space firmware loading support, so let's select FW_LOADER explicitly to avoid painful misconfigurations (which only show up in runtime). Cc: stable <stable@vger.kernel.org> Reported-by: Mark Grosen <mgrosen@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
* | remoteproc/omap: fix randconfig unmet direct dependenciesOhad Ben-Cohen2012-07-041-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | OMAP_REMOTEPROC selects REMOTEPROC and RPMSG, both of which depend on EXPERIMENTAL, so let's have OMAP_REMOTEPROC depend on EXPERIMENTAL too, in order to avoid the below randconfig warnings. warning: (OMAP_REMOTEPROC) selects REMOTEPROC which has unmet direct dependencies (EXPERIMENTAL) warning: (OMAP_REMOTEPROC) selects RPMSG which has unmet direct dependencies (EXPERIMENTAL) Cc: stable <stable@vger.kernel.org> Reported-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
* | remoteproc/omap: fix dev_err typoOhad Ben-Cohen2012-06-171-1/+1
| | | | | | | | | | | | | | | | For some reason one of the dev_err invocations is using a wrong device so fix that. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Cc: stable@vger.kernel.org
* | remoteproc: fix missing fault indication in error-pathSjur Brændeland2012-06-101-1/+3
| | | | | | | | | | | | | | | | | | | | If rproc_find_rsc_table() fails, rproc_fw_boot() must set return-value before jumping to clean_up label. Otherwise no error value is returned. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Cc: stable@vger.kernel.org
* | remoteproc: fix print format warningsSjur Brændeland2012-06-101-3/+3
|/ | | | | | | | | | | | | | | | | | Fix compile warnings from GCC 4.6.1 when printing values of type size_t. drivers/remoteproc/remoteproc_core.c:251:6: warning: format ‘%x’ expects argument of type ‘unsigned int’, but argument 4 has type ‘size_t’ [-Wformat] drivers/remoteproc/remoteproc_core.c:938:9: warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 4 has type ‘size_t’ [-Wformat] drivers/remoteproc/remoteproc_core.c:1023:2: warning: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘size_t’ [-Wformat] Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Cc: stable@vger.kernel.org
* Merge tag 'iommu-updates-v3.5' of ↵Linus Torvalds2012-05-301-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU updates from Joerg Roedel: "Not much stuff this time. The only change to the IOMMU core code is the addition of a handle to the fault handling code. A few updates to the AMD IOMMU driver to work around new errata. The other patches are mostly fixes and enhancements to the existing ARM IOMMU drivers and documentation updates. A new IOMMU driver for the Exynos platform was also underway but got merged via the Samsung tree and is not part of this tree." * tag 'iommu-updates-v3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: Documentation: kernel-parameters.txt Add amd_iommu_dump iommu/core: pass a user-provided token to fault handlers iommu/tegra: gart: Fix register offset correctly iommu: OMAP: device detach on domain destroy iommu: tegra/gart: Add device tree support iommu: tegra/gart: use correct gart_device iommu/tegra: smmu: Print device name correctly iommu/amd: Add workaround for event log erratum iommu/amd: Check for the right TLP prefix bit dma-debug: release free_entries_lock before saving stack trace
| * iommu/core: pass a user-provided token to fault handlersOhad Ben-Cohen2012-05-221-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sometimes a single IOMMU user may have to deal with several different IOMMU devices (e.g. remoteproc). When an IOMMU fault happens, such users have to regain their context in order to deal with the fault. Users can't use the private fields of neither the iommu_domain nor the IOMMU device, because those are already used by the IOMMU core and low level driver (respectively). This patch just simply allows users to pass a private token (most notably their own context pointer) to iommu_set_fault_handler(), and then makes sure it is provided back to the users whenever an IOMMU fault happens. The patch also adopts remoteproc to the new fault handling interface, but the real functionality using this (recovery of remote processors) will only be added later in a subsequent patch set. Cc: Fernando Guzman Lugo <fernando.lugo@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* | Merge branch 'for-linus' of ↵Linus Torvalds2012-05-231-2/+1Star
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial updates from Jiri Kosina: "As usual, it's mostly typo fixes, redundant code elimination and some documentation updates." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (57 commits) edac, mips: don't change code that has been removed in edac/mips tree xtensa: Change mail addresses of Hannes Weiner and Oskar Schirmer lib: Change mail address of Oskar Schirmer net: Change mail address of Oskar Schirmer arm/m68k: Change mail address of Sebastian Hess i2c: Change mail address of Oskar Schirmer net: Fix tcp_build_and_update_options comment in struct tcp_sock atomic64_32.h: fix parameter naming mismatch Kconfig: replace "--- help ---" with "---help---" c2port: fix bogus Kconfig "default no" edac: Fix spelling errors. qla1280: Remove redundant NULL check before release_firmware() call remoteproc: remove redundant NULL check before release_firmware() qla2xxx: Remove redundant NULL check before release_firmware() call. aic94xx: Get rid of redundant NULL check before release_firmware() call tehuti: delete redundant NULL check before release_firmware() qlogic: get rid of a redundant test for NULL before call to release_firmware() bna: remove redundant NULL test before release_firmware() tg3: remove redundant NULL test before release_firmware() call typhoon: get rid of redundant conditional before all to release_firmware() ...
| * remoteproc: remove redundant NULL check before release_firmware()Jesper Juhl2012-04-301-2/+1Star
| | | | | | | | | | | | | | | | release_firmware deals gracefully with NULL pointers, so checking first is redundant. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | remoteproc: fix off-by-one bug in __rproc_free_vringsSubramaniam Chanderashekarapuram2012-05-131-1/+1
|/ | | | | | | | | | Fix a nasty off-by-one bug in __rproc_free_vrings which resulted in a memory leak and (for some platforms) failures to reload the remote processor. Signed-off-by: Subramaniam Chanderashekarapuram <subramaniam.ca@ti.com> [ohad@wizery.com: reword commit log, stick with the for loop] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
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