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2016-08-04dma-mapping: use unsigned long for dma_attrsKrzysztof Kozlowski1-4/+3
The dma-mapping core and the implementations do not change the DMA attributes passed by pointer. Thus the pointer can point to const data. However the attributes do not have to be a bitfield. Instead unsigned long will do fine: 1. This is just simpler. Both in terms of reading the code and setting attributes. Instead of initializing local attributes on the stack and passing pointer to it to dma_set_attr(), just set the bits. 2. It brings safeness and checking for const correctness because the attributes are passed by value. Semantic patches for this change (at least most of them): virtual patch virtual context @r@ identifier f, attrs; @@ f(..., - struct dma_attrs *attrs + unsigned long attrs , ...) { ... } @@ identifier r.f; @@ f(..., - NULL + 0 ) and // Options: --all-includes virtual patch virtual context @r@ identifier f, attrs; type t; @@ t f(..., struct dma_attrs *attrs); @@ identifier r.f; @@ f(..., - NULL + 0 ) Link: http://lkml.kernel.org/r/1468399300-5399-2-git-send-email-k.kozlowski@samsung.com Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Vineet Gupta <vgupta@synopsys.com> Acked-by: Robin Murphy <robin.murphy@arm.com> Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> Acked-by: Mark Salter <msalter@redhat.com> [c6x] Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> [cris] Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> [drm] Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Acked-by: Joerg Roedel <jroedel@suse.de> [iommu] Acked-by: Fabien Dessenne <fabien.dessenne@st.com> [bdisp] Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com> [vb2-core] Acked-by: David Vrabel <david.vrabel@citrix.com> [xen] Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> [xen swiotlb] Acked-by: Joerg Roedel <jroedel@suse.de> [iommu] Acked-by: Richard Kuo <rkuo@codeaurora.org> [hexagon] Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k] Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> [s390] Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> [avr32] Acked-by: Vineet Gupta <vgupta@synopsys.com> [arc] Acked-by: Robin Murphy <robin.murphy@arm.com> [arm64 and dma-iommu] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-07-15remoteproc: qcom: hexagon: Clean up mpss validationBjorn Andersson1-11/+7
As reported by Dan the unsigned "val" can't be negative. But instead correcting the check for early errors here followed by a wait for the validation result to show the error or success we can consolidate these two parts of the validation process into the validation function. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-07-15remoteproc: qcom: remove redundant dev_err call in q6v5_init_mem()Wei Yongjun1-6/+2
There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-07-13remoteproc: qcom: Driver for the self-authenticating Hexagon v5Bjorn Andersson5-0/+1124
This driver supports bringing the Q6V5 out of reset, load and drive the self-authenticating boot loader and use this to load the mdt and subsequent bXX files. Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-06-14remoteproc: Fix potential race condition in rproc_addDave Gerlach1-6/+9
rproc_add adds the newly created remoteproc to a list for use by rproc_get_by_phandle and then does some additional processing to finish adding the remoteproc. This leaves a small window of time in which the rproc is available in the list but not yet fully initialized, so if another driver comes along and gets a handle to the rproc, it will be invalid. Rearrange the code in rproc_add to make sure the rproc is added to the list only after it has been successfuly initialized. Fixes: fec47d863587 ("remoteproc: introduce rproc_get_by_phandle API") Cc: stable@vger.kernel.org Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-05-13remoteproc: Add additional crash reasonsBjorn Andersson1-0/+2
The Qualcomm WCNSS can crash by watchdog or a fatal software error. Add these types to the list of remoteproc crash reasons. Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-05-13remoteproc: core: Make the loaded resource table optionalBjorn Andersson1-6/+2
Remote processors like the ones found in the Qualcomm SoCs does not have a resource table passed to them, so make it optional by only populating it if it does exist. Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-05-06remoteproc: core: Task sync during rproc_fw_boot()Lee Jones3-3/+29
By default, rproc_fw_boot() needs to wait for rproc to be configured, but a race may occur when using rpmsg/virtio. In this case, it can be called locally in a safe manor. This patch represents two usecases: - External call (via exported rproc_boot()), which waits - Internal call can use 'nowait' version of rproc_boot() Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-03-29remoteproc: st: fix check of syscon_regmap_lookup_by_phandle() return valueVladimir Zapolskiy1-2/+2
syscon_regmap_lookup_by_phandle() returns either a valid pointer to struct regmap or ERR_PTR() error value, check for NULL is invalid and on error path may lead to oops, the change corrects the check. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-01-30remoteproc: Supply controller driver for ST's Remote ProcessorsLee Jones3-0/+307
Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-01-30remoteproc: debugfs: Add ability to boot remote processor using debugfsLee Jones1-0/+34
This functionality is especially useful during the testing phase. When used in conjunction with Mailbox's Test Framework we can trivially conduct end-to-end testing i.e. boot co-processor, send and receive messages to the co-processor, then shut it down again (repeat as required). Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-01-30remoteproc: debugfs: Return error on invalid 'count' valueLee Jones1-1/+1
If 'count' value is invalid, return -EINVAL. Signed-off-by: Lee Jones <lee.jones@linaro.org> [bjorn: changed commit message] Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-01-30remoteproc/wkup_m3: Use MODULE_DEVICE_TABLE to export aliasDave Gerlach1-0/+1
Use MODULE_DEVICE_TABLE with wkup_m3_rproc_of_match so the module alias is exported and the wkup_m3_rproc driver can automatically probe. Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2016-01-30remoteproc: report error if resource table doesn't existStefan Agner1-1/+3
Currently, if the resource table is completely missing in the firmware, powering up the remoteproc fails silently. Add a message indicating that the resource table is missing in the firmware. Signed-off-by: Stefan Agner <stefan@agner.ch> Acked-by: Suman Anna <s-anna@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2016-01-12virtio: make find_vqs() checkpatch.pl-friendlyStefan Hajnoczi1-1/+1
checkpatch.pl wants arrays of strings declared as follows: static const char * const names[] = { "vq-1", "vq-2", "vq-3" }; Currently the find_vqs() function takes a const char *names[] argument so passing checkpatch.pl's const char * const names[] results in a compiler error due to losing the second const. This patch adjusts the find_vqs() prototype and updates all virtio transports. This makes it possible for virtio_balloon.c, virtio_input.c, virtgpu_kms.c, and virtio_rpmsg_bus.c to use the checkpatch.pl-friendly type. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
2015-11-26remoteproc: fix memory leak of remoteproc ida cache layersSuman Anna1-0/+2
The remoteproc core uses a static ida named rproc_dev_index for assigning an automatic index number to a registered remoteproc. The ida core may allocate some internal idr cache layers and ida bitmap upon any ida allocation, and all these layers are truely freed only upon the ida destruction. The rproc_dev_index ida is not destroyed at present, leading to a memory leak when using the remoteproc core as a module and atleast one rproc device is registered and unregistered. Fix this by invoking ida_destroy() in the remoteproc core module exit. Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2015-11-26remoteproc: avoid stack overflow in debugfs fileArnd Bergmann1-1/+1
Recent gcc versions warn about reading from a negative offset of an on-stack array: drivers/remoteproc/remoteproc_debugfs.c: In function 'rproc_recovery_write': drivers/remoteproc/remoteproc_debugfs.c:167:9: warning: 'buf[4294967295u]' may be used uninitialized in this function [-Wmaybe-uninitialized] I don't see anything in sys_write() that prevents us from being called with a zero 'count' argument, so we should add an extra check in rproc_recovery_write() to prevent the access and avoid the warning. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 2e37abb89a2e ("remoteproc: create a 'recovery' debugfs entry") Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2015-06-18remoteproc: fix !CONFIG_OF build breakageOhad Ben-Cohen1-0/+7
Fix this: drivers/remoteproc/remoteproc_core.c: In function 'rproc_get_by_phandle': >> drivers/remoteproc/remoteproc_core.c:1167:2: error: implicit declaration of function 'of_find_node_by_phandle' [-Werror=implicit-function-declaration] np = of_find_node_by_phandle(phandle); Reported-by: kbuild test robot <fengguang.wu@intel.com> Cc: Dave Gerlach <d-gerlach@ti.com> Cc: Suman Anna <s-anna@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2015-06-17remoteproc/wkup_m3: add a remoteproc driver for TI Wakeup M3Dave Gerlach3-0/+271
Add a remoteproc driver to load the firmware and boot a small Wakeup M3 processor present on TI AM33xx and AM43xx SoCs. This Wakeup M3 remote processor is an integrated Cortex M3 that allows the SoC to enter the lowest possible power state by taking control from the MPU after it has gone into its own low power state and shutting off any additional peripherals. The Wakeup M3 processor has two internal memory regions - 16 kB of unified instruction memory called UMEM used to store executable code, and 8 kB of data memory called DMEM used for all data sections. The Wakeup M3 processor executes its code entirely from within the UMEM and uses the DMEM for any data. It does not use any external memory or any other external resources. The device address view has the UMEM at address 0x0 and DMEM at address 0x80000, and these are computed automatically within the driver based on relative address calculation from the corresponding device tree IOMEM resources. These device addresses are used to aid the core remoteproc ELF loader code to properly translate and load the firmware segments through the .rproc_da_to_va ops. Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2015-06-17remoteproc: add a rproc ops for performing address translationSuman Anna1-6/+25
The rproc_da_to_va API is currently used to perform any device to kernel address translations to meet the different needs of the remoteproc core/drivers (eg: loading). The functionality is achieved within the remoteproc core, and is limited only for carveouts allocated within the core. A new rproc ops, da_to_va, is added to provide flexibility to platform implementations to perform the address translation themselves when the above conditions cannot be met by the implementations. The rproc_da_to_va() API is extended to invoke this ops if present, and fallback to regular processing if the platform implementation cannot provide the translation. This will allow any remoteproc implementations to translate addresses for dedicated memories like internal memories. While at this, also update the rproc_da_to_va() documentation since it is an exported function. Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2015-06-16remoteproc: introduce rproc_get_by_phandle APIDave Gerlach1-0/+50
Allow users of remoteproc the ability to get a handle to an rproc by passing a phandle supplied in the user's device tree node. This is useful in situations that require manual booting of the rproc. This patch uses the code removed by commit 40e575b1d0b3 ("remoteproc: remove the get_by_name/put API") for the ref counting but is modified to use a simple list and locking mechanism and has rproc_get_by_name replaced with an rproc_get_by_phandle API. Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Suman Anna <s-anna@ti.com> [fix order of Signed-off-by tags] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2015-05-02remoteproc: fix various checkpatch warningsSuman Anna2-19/+10
Fix all the checkpatch warnings in the core remoteproc code. The fixes cover the following warnings: 1. WARNING: void function return statements are not generally useful 2. WARNING: Possible unnecessary 'out of memory' message 3. WARNING: line over 80 characters 4. WARNING: braces {} are not necessary for single statement blocks 5. WARNING: Unnecessary space before function pointer arguments Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2015-05-02remoteproc/davinci: fix quoted split string checkpatch warningSuman Anna1-2/+1
Fix the following checkpatch warning, WARNING: quoted string split across lines + "\n\t\tName of DSP firmware file in /lib/firmware" + " (if not specified defaults to 'rproc-dsp-fw')"); Signed-off-by: Suman Anna <s-anna@ti.com> [remove leading whitespace as well] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2015-05-02remoteproc/ste: add blank lines after declarationsSuman Anna1-2/+2
Fix couple of checkpatch warnings of the type, "WARNING: Missing a blank line after declarations" Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2015-03-12remoteproc: add IOMMU hardware capability flagSuman Anna4-13/+6
The remoteproc framework currently relies on iommu_present() on the bus the device is on, to perform MMU management. However, this logic doesn't scale for multi-arch, especially for processors that do not have an IOMMU. Replace this logic instead by using a h/w capability flag for the presence of IOMMU in the rproc structure. This issue is seen on OMAP platforms when trying to add a remoteproc driver for a small Cortex M3 called the WkupM3 used for suspend / resume management on TI AM335/AM437x SoCs. This processor does not have an MMU. Same is the case with another processor subsystem PRU-ICSS on AM335/AM437x. All these are platform devices, and the current iommu_present check will not scale for the same kernel image to support OMAP4/OMAP5 and AM335/AM437x. The existing platform implementation drivers - OMAP remoteproc, STE Modem remoteproc and DA8xx remoteproc, are updated as well to properly configure the newly added rproc field. Cc: Robert Tivy <rtivy@ti.com> Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Suman Anna <s-anna@ti.com> [small change in the commit title and in a single comment] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2014-12-15Merge tag 'driver-core-3.19-rc1' of ↵Linus Torvalds3-3/+0
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
2014-12-11Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds1-3/+8
Pull virtio updates from Michael Tsirkin: "virtio: virtio 1.0 support, misc patches This adds a lot of infrastructure for virtio 1.0 support. Notable missing pieces: virtio pci, virtio balloon (needs spec extension), vhost scsi. Plus, there are some minor fixes in a couple of places. Note: some net drivers are affected by these patches. David said he's fine with merging these patches through my tree. Rusty's on vacation, he acked using my tree for these, too" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (70 commits) virtio_ccw: finalize_features error handling virtio_ccw: future-proof finalize_features virtio_pci: rename virtio_pci -> virtio_pci_common virtio_pci: update file descriptions and copyright virtio_pci: split out legacy device support virtio_pci: setup config vector indirectly virtio_pci: setup vqs indirectly virtio_pci: delete vqs indirectly virtio_pci: use priv for vq notification virtio_pci: free up vq->priv virtio_pci: fix coding style for structs virtio_pci: add isr field virtio: drop legacy_only driver flag virtio_balloon: drop legacy_only driver flag virtio_ccw: rev 1 devices set VIRTIO_F_VERSION_1 virtio: allow finalize_features to fail virtio_ccw: legacy: don't negotiate rev 1/features virtio: add API to detect legacy devices virtio_console: fix sparse warnings vhost: remove unnecessary forward declarations in vhost.h ...
2014-12-09virtio: allow finalize_features to failMichael S. Tsirkin1-1/+3
This will make it easy for transports to validate features and return failure. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-09virtio: assert 32 bit features in transportsMichael S. Tsirkin1-0/+3
At this point, no transports set any of the high 32 feature bits. Since transports generally can't (yet) cope with such bits, add BUG_ON checks to make sure they are not set by mistake. Based on rproc patch by Rusty. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-12-09virtio: add support for 64 bit features.Michael S. Tsirkin1-1/+1
Change u32 to u64, and use BIT_ULL and 1ULL everywhere. Note: transports are unchanged, and only set low 32 bit. This guarantees that no transport sets e.g. VERSION_1 by mistake without proper support. Based on patch by Rusty. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-12-09virtio: use u32, not bitmap for featuresMichael S. Tsirkin1-1/+1
It seemed like a good idea to use bitmap for features in struct virtio_device, but it's actually a pain, and seems to become even more painful when we get more than 32 feature bits. Just change it to a u32 for now. Based on patch by Rusty. Suggested-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-11-27mailbox/omap: adapt to the new mailbox frameworkSuman Anna1-24/+27
The OMAP mailbox driver and its existing clients (remoteproc for OMAP4+) are adapted to use the generic mailbox framework. The main changes for the adaptation are: - The tasklet used for Tx is replaced with the state machine from the generic mailbox framework. The workqueue used for processing the received messages stays intact for minimizing the effects on the OMAP mailbox clients. - The existing exported client API, omap_mbox_get, omap_mbox_put and omap_mbox_send_msg are deleted, as the framework provides equivalent functionality. A OMAP-specific omap_mbox_request_channel is added though to support non-DT way of requesting mailboxes. - The OMAP mailbox driver is integrated with the mailbox framework through the proper implementations of mbox_chan_ops, except for .last_tx_done and .peek_data. The OMAP mailbox driver does not need these ops, as it is completely interrupt driven. - The OMAP mailbox driver uses a custom of_xlate controller ops that allows phandles for the pargs specifier instead of indexing to avoid any channel registration order dependencies. - The new framework does not support multiple clients operating on a single channel, so the reference counting logic is simplified. - The remoteproc driver (current client) is adapted to use the new API. The notifier callbacks used within this client is replaced with the regular callbacks from the newer framework. - The exported OMAP mailbox API are limited to omap_mbox_save_ctx, omap_mbox_restore_ctx, omap_mbox_enable_irq & omap_mbox_disable_irq, with the signature modified to take in the new mbox_chan handle instead of the OMAP specific omap_mbox handle. The first 2 will be removed when the OMAP mailbox driver is adapted to runtime_pm. The other exported API omap_mbox_request_channel will be removed once existing legacy users are converted to DT. Signed-off-by: Suman Anna <s-anna@ti.com> Cc: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2014-10-20remoteproc: drop owner assignment from platform_driversWolfram Sang3-3/+0
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-06-17remoteproc: da8xx: don't select CMA on no-MMUArnd Bergmann1-1/+1
We can only use CMA on systems that have an MMU, because of the requirement to use memory migration. NOMMU systems are rather constrained to start with, but it seems reasonable to assume that DMA allocations can still succeed in the constrained case for remoteproc on NOMMU, so this patch changes the da8xx implementation to not rely on CMA when the MMU is disabled. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Ohad Ben-Cohen <ohad@wizery.com> Cc: Robert Tivy <rtivy@ti.com>
2014-02-24remoteproc/ste_modem: staticize local symbolsJingoo Han1-2/+2
These local symbols are used only in this file. Fix the following sparse warnings: drivers/remoteproc/ste_modem_rproc.c:167:27: warning: symbol 'sproc_fw_ops' was not declared. Should it be static? drivers/remoteproc/ste_modem_rproc.c:196:25: warning: symbol 'sproc_dev_cb' was not declared. Should it be static? Signed-off-by: Jingoo Han <jg1.han@samsung.com> [standartize patch title] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2014-02-24remoteproc/davinci: simplify use of devm_ioremap_resourceJulia Lawall1-13/+1
Remove unneeded error handling on the result of a call to platform_get_resource when the value is passed to devm_ioremap_resource. Move the call to platform_get_resource adjacent to the call to devm_ioremap_resource to make the connection between them more clear. A simplified version of the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression pdev,res,n,e,e1; expression ret != 0; identifier l; @@ - res = platform_get_resource(pdev, IORESOURCE_MEM, n); ... when != res - if (res == NULL) { ... \(goto l;\|return ret;\) } ... when != res + res = platform_get_resource(pdev, IORESOURCE_MEM, n); e = devm_ioremap_resource(e1, res); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> [simplify patch title] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2014-02-24remoteproc/davinci: drop needless devm_clk_putUwe Kleine-König1-2/+0
The comment above disable_irq says that it is needed to ensure that the "devm subsystem might end up releasing things before freeing the irq, thus allowing an interrupt to sneak in while the device is being removed." disable_irq is enough for this purpose and there is no need to manually free the reference to the clock. Cc: Robert Tivy <rtivy@ti.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> [moved the Cc line into the commit message] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2013-10-29virtio_ring: change host notification APIHeinz Graalfs1-1/+2
Currently a host kick error is silently ignored and not reflected in the virtqueue of a particular virtio device. Changing the notify API for guest->host notification seems to be one prerequisite in order to be able to handle such errors in the context where the kick is triggered. This patch changes the notify API. The notify function must return a bool return value. It returns false if the host notification failed. Signed-off-by: Heinz Graalfs <graalfs@linux.vnet.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2013-07-15remoteproc: don't use PTR_RET().Rusty Russell1-1/+1
We've already tested that it's an error. Cc: Robert Tivy <rtivy@ti.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Ohad Ben-Cohen <ohad@wizery.com>
2013-07-11Merge tag 'remoteproc-3.11-fixes' of ↵Linus Torvalds3-16/+15
git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc Pull remoteproc fixes from Ohad Ben-Cohen: "Trivial remoteproc fixes by Suman Anna, Wei Yongjun and Thomas Meyer" * tag 'remoteproc-3.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc: remoteproc: Cocci spatch "memdup.spatch" remoteproc: free carveout memories only after unmapping them remoteproc/omap: fix a sparse warning remoteproc: fix checkpatch errors in remoteproc code remoteproc: fix error return code in rproc_fw_boot()
2013-07-01remoteproc: Cocci spatch "memdup.spatch"Thomas Meyer1-2/+1
Use kmemdup instead of kmalloc + memcpy. Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2013-07-01remoteproc: free carveout memories only after unmapping themSuman Anna1-7/+7
It is not preferable to have the allocated pages for carveout memories freed before they are unmapped. The code that deals with the cleanup of carveout memories is therefore moved after the corresponding mapping entries were cleaned up. This is mostly a no-op since the remote processors are already stopped when the cleanup function is called, but this will make the cleanup code follow the exact reverse path of allocation. Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2013-06-30remoteproc: fix checkpatch errors in remoteproc codeSuman Anna2-4/+3
This patch fixes relevant checkpatch errors and warnings in the remoteproc source files. Signed-off-by: Suman Anna <s-anna@ti.com> [drop 80-char-lines checkpatch fixes and update commit log accordingly] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2013-06-30remoteproc: fix error return code in rproc_fw_boot()Wei Yongjun1-3/+4
Set 'ret' to -EINVAL when needed, so a sensible return value is returned on errors. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> [fix additional instances of this bug as well, update commit log] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2013-06-11mailbox/omap: move the OMAP mailbox framework to driversSuman Anna2-2/+3
The mailbox hardware (in OMAP) uses a queued mailbox interrupt mechanism that provides a communication channel between processors through a set of registers and their associated interrupt signals by sending and receiving messages. The OMAP mailbox framework/driver code is moved to be under drivers/mailbox, in preparation for adapting to a common mailbox driver framework. This allows the build for OMAP mailbox to be enabled (it was disabled during the multi-platform support). As part of the migration from plat and mach code: - Kconfig symbols have been renamed to build OMAP1 or OMAP2+ drivers. - mailbox.h under plat-omap/plat/include has been split into a public and private header files. The public header has only the API related functions and types. - The module name mailbox.ko from plat-omap is changed to omap-mailbox.ko - The module name mailbox_mach.ko from mach-omapX is changed as mailbox_omap1.ko for OMAP1 mailbox_omap2.ko for OMAP2+ Cc: Tony Lindgren <tony@atomide.com> [gregkh@linuxfoundation.org: ack for staging part] Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Omar Ramirez Luna <omar.ramirez@copitl.com> Signed-off-by: Suman Anna <s-anna@ti.com>
2013-05-08Merge tag 'remoteproc-3.10' of ↵Linus Torvalds8-134/+668
git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc Pull remoteproc update from Ohad Ben-Cohen: - Some refactoring, cleanups and small improvements from Sjur Brændeland. The improvements are mainly about better supporting varios virtio properties (such as virtio's config space, status and features). I now see that I messed up while commiting one of Sjur's patches and erroneously put myself as the author, as well as letting a nasty typo sneak in. I will not fix this in order to avoid rebasing the patches. Sjur - sorry! - A new remoteproc driver for OMAP-L13x (technically a DaVinci platform) from Robert Tivy. - Extend OMAP support to OMAP5 as well, from Vincent Stehlé. - Fix Kconfig VIRTUALIZATION dependency, from Suman Anna (a non-critical fix which arrived late during the rc cycle). * tag 'remoteproc-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc: remoteproc: fix kconfig dependencies for VIRTIO remoteproc/davinci: add a remoteproc driver for OMAP-L13x DSP remoteproc: support default firmware name in rproc_alloc() remoteproc/omap: support OMAP5 too remoteproc: set vring addresses in resource table remoteproc: support virtio config space. remoteproc: perserve resource table data remoteproc: calculate max_notifyid by counting vrings remoteproc: code cleanup of resource parsing remoteproc: parse STE-firmware and find resource table address remoteproc: add find_loaded_rsc_table firmware ops remoteproc: refactor rproc_elf_find_rsc_table()
2013-04-30Merge branch 'for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree updates from Jiri Kosina: "Usual stuff, mostly comment fixes, typo fixes, printk fixes and small code cleanups" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (45 commits) mm: Convert print_symbol to %pSR gfs2: Convert print_symbol to %pSR m32r: Convert print_symbol to %pSR iostats.txt: add easy-to-find description for field 6 x86 cmpxchg.h: fix wrong comment treewide: Fix typo in printk and comments doc: devicetree: Fix various typos docbook: fix 8250 naming in device-drivers pata_pdc2027x: Fix compiler warning treewide: Fix typo in printks mei: Fix comments in drivers/misc/mei treewide: Fix typos in kernel messages pm44xx: Fix comment for "CONFIG_CPU_IDLE" doc: Fix typo "CONFIG_CGROUP_CGROUP_MEMCG_SWAP" mmzone: correct "pags" to "pages" in comment. kernel-parameters: remove outdated 'noresidual' parameter Remove spurious _H suffixes from ifdef comments sound: Remove stray pluses from Kconfig file radio-shark: Fix printk "CONFIG_LED_CLASS" doc: put proper reference to CONFIG_MODULE_SIG_ENFORCE ...
2013-04-24treewide: Fix typo in printk and commentsMasanari Iida1-1/+1
Fix typo in printk and comments within various drivers. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-04-21remoteproc: fix kconfig dependencies for VIRTIOSuman Anna1-0/+1
Fix this: warning: (VIRTIO_PCI && VIRTIO_MMIO && REMOTEPROC && RPMSG) selects VIRTIO which has unmet direct dependencies (VIRTUALIZATION) Cc: stable@vger.kernel.org Signed-off-by: Suman Anna <s-anna@ti.com> [edit commit log] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2013-04-15remoteproc/davinci: add a remoteproc driver for OMAP-L13x DSPRobert Tivy3-0/+348
Adding a new remoteproc driver for OMAP-L13x DSP Signed-off-by: Robert Tivy <rtivy@ti.com> [removed 'EXPERIMENTAL' and fixed some indentation issues] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
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