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* mailbox: qcom-ipcc: fix incorrect num_chans countingJonathan Marek2023-09-051-3/+1
| | | | | | | | | Breaking out early when a match is found leads to an incorrect num_chans value when more than one ipcc mailbox channel is used by the same device. Fixes: e9d50e4b4d04 ("mailbox: qcom-ipcc: Dynamic alloc for channel arrangement") Signed-off-by: Jonathan Marek <jonathan@marek.ca> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: Explicitly include correct DT includesRob Herring2023-09-0516-10/+15
| | | | | | | | | | | | | | The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: ti-msgmgr: Use devm_platform_ioremap_resource_byname()Li Zetao2023-09-051-10/+6
| | | | | | | | | Convert platform_get_resource_byname() + devm_ioremap_resource() to a single call to devm_platform_ioremap_resource_byname(), as this is exactly what this function does. Signed-off-by: Li Zetao <lizetao1@huawei.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: platform-mhu: Remove redundant dev_err()Ruan Jinjie2023-09-051-3/+1
| | | | | | | | | There is no need to call the dev_err() function directly to print a custom message when handling an error from platform_get_irq() function as it is going to display an appropriate error message in case of a failure. Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: bcm-pdc: Fix some kernel-doc commentsYang Li2023-09-051-3/+3
| | | | | | | | | | | | | | Fix some kernel-doc comments to silence the warnings: drivers/mailbox/bcm-pdc-mailbox.c:707: warning: Function parameter or member 'pdcs' not described in 'pdc_tx_list_sg_add' drivers/mailbox/bcm-pdc-mailbox.c:707: warning: Excess function parameter 'spu_idx' description in 'pdc_tx_list_sg_add' drivers/mailbox/bcm-pdc-mailbox.c:875: warning: Function parameter or member 'pdcs' not described in 'pdc_rx_list_sg_add' drivers/mailbox/bcm-pdc-mailbox.c:875: warning: Excess function parameter 'spu_idx' description in 'pdc_rx_list_sg_add' drivers/mailbox/bcm-pdc-mailbox.c:966: warning: Function parameter or member 't' not described in 'pdc_tasklet_cb' drivers/mailbox/bcm-pdc-mailbox.c:966: warning: Excess function parameter 'data' description in 'pdc_tasklet_cb' Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: mailbox-test: Fix an error check in mbox_test_probe()Minjie Du2023-09-051-1/+1
| | | | | | | | | mbox_test_request_channel() function returns NULL or error value embedded in the pointer (PTR_ERR). Evaluate the return value using IS_ERR_OR_NULL. Signed-off-by: Minjie Du <duminjie@vivo.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: tegra-hsp: Convert to devm_platform_ioremap_resource()Yangtao Li2023-09-051-3/+1
| | | | | | | Use devm_platform_ioremap_resource() to simplify code. Signed-off-by: Yangtao Li <frank.li@vivo.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: rockchip: Use devm_platform_get_and_ioremap_resource()Yangtao Li2023-09-051-5/+1
| | | | | | | | | Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li <frank.li@vivo.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: mailbox-test: Use devm_platform_get_and_ioremap_resource()Yangtao Li2023-09-051-4/+2
| | | | | | | | | Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li <frank.li@vivo.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: bcm-pdc: Use devm_platform_get_and_ioremap_resource()Yangtao Li2023-09-051-9/+3
| | | | | | | | | Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li <frank.li@vivo.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: bcm-ferxrm-mailbox: Use devm_platform_get_and_ioremap_resource()Yangtao Li2023-09-051-7/+3
| | | | | | | | | Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li <frank.li@vivo.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: ti-msgmgr: Fill non-message tx data fields with 0x0Nishanth Menon2023-07-011-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sec proxy/message manager data buffer is 60 bytes with the last of the registers indicating transmission completion. This however poses a bit of a challenge. The backing memory for sec_proxy / message manager is regular memory, and all sec proxy does is to trigger a burst of all 60 bytes of data over to the target thread backing ring accelerator. It doesn't do a memory scrub when it moves data out in the burst. When we transmit multiple messages, remnants of previous message is also transmitted which results in some random data being set in TISCI fields of messages that have been expanded forward. The entire concept of backward compatibility hinges on the fact that the unused message fields remain 0x0 allowing for 0x0 value to be specially considered when backward compatibility of message extension is done. So, instead of just writing the completion register, we continue to fill the message buffer up with 0x0 (note: for partial message involving completion, we already do this). This allows us to scale and introduce ABI changes back also work with other boot stages that may have left data in the internal memory. While at this, be consistent and explicit with the data_reg pointer increment. Fixes: aace66b170ce ("mailbox: Introduce TI message manager driver") Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: tegra: add support for Tegra264Stefan Kristiansson2023-07-011-2/+14
| | | | | | | | | | Tegra264 has a slightly different doorbell register layout than previous chips. Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Stefan Kristiansson <stefank@nvidia.com> Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: mailbox-test: fix a locking issue in mbox_test_message_write()Dan Carpenter2023-05-311-4/+6
| | | | | | | | | | | There was a bug where this code forgot to unlock the tdev->mutex if the kzalloc() failed. Fix this issue, by moving the allocation outside the lock. Fixes: 2d1e952a2b8e ("mailbox: mailbox-test: Fix potential double-free in mbox_test_message_write()") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by: Lee Jones <lee@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* Merge tag 'mailbox-v6.4' of ↵Linus Torvalds2023-05-079-99/+136
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.linaro.org/landing-teams/working/fujitsu/integration Pull mailbox updates from Jassi Brar: - mailbox api: allow direct registration to a channel and convert omap and pcc to use mbox_bind_client - omap and hi6220 : use of_property_read_bool - test: fix double-free and use spinlock header - rockchip and bcm-pdc: drop of_match_ptr - mpfs: change config symbol - mediatek gce: support MT6795 - qcom apcs: consolidate of_device_id and support IPQ9574 * tag 'mailbox-v6.4' of git://git.linaro.org/landing-teams/working/fujitsu/integration: dt-bindings: mailbox: qcom: add compatible for IPQ9574 SoC mailbox: qcom-apcs-ipc: do not grow the of_device_id dt-bindings: mailbox: qcom,apcs-kpss-global: use fallbacks for few variants dt-bindings: mailbox: mediatek,gce-mailbox: Add support for MT6795 mailbox: mpfs: convert SOC_MICROCHIP_POLARFIRE to ARCH_MICROCHIP_POLARFIRE mailbox: bcm-pdc: drop of_match_ptr for ID table mailbox: rockchip: drop of_match_ptr for ID table mailbox: mailbox-test: Fix potential double-free in mbox_test_message_write() mailbox: mailbox-test: Explicitly include header for spinlock support mailbox: Use of_property_read_bool() for boolean properties mailbox: pcc: Use mbox_bind_client mailbox: omap: Use mbox_bind_client mailbox: Allow direct registration to a channel
| * mailbox: qcom-apcs-ipc: do not grow the of_device_idKrzysztof Kozlowski2023-05-041-5/+6
| | | | | | | | | | | | | | | | | | | | Re-organize the compatible devices and add a comment to avoid unneeded of_device_id growth with every new SoC. These devices have quite a lot of similarities and they can use only one compatible fallback for driver binding. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: mpfs: convert SOC_MICROCHIP_POLARFIRE to ARCH_MICROCHIP_POLARFIREConor Dooley2023-05-041-1/+1
| | | | | | | | | | | | | | | | | | As part of converting RISC-V SOC_FOO symbols to ARCH_FOO to match the use of such symbols on other architectures, convert the Microchip FPGA mailbox driver to use the new symbol. Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: bcm-pdc: drop of_match_ptr for ID tableKrzysztof Kozlowski2023-05-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | The driver can match only via the DT table so the table should be always used and the of_match_ptr does not have any sense (this also allows ACPI matching via PRP0001, even though it might not be relevant here). drivers/mailbox/bcm-pdc-mailbox.c:1474:34: error: ‘pdc_mbox_of_match’ defined but not used [-Werror=unused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: rockchip: drop of_match_ptr for ID tableKrzysztof Kozlowski2023-05-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | The driver can match only via the DT table so the table should be always used and the of_match_ptr does not have any sense (this also allows ACPI matching via PRP0001, even though it might not be relevant here). drivers/mailbox/rockchip-mailbox.c:158:34: error: ‘rockchip_mbox_of_match’ defined but not used [-Werror=unused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: mailbox-test: Fix potential double-free in mbox_test_message_write()Lee Jones2023-05-041-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a user can make copy_from_user() fail, there is a potential for UAF/DF due to a lack of locking around the allocation, use and freeing of the data buffers. This issue is not theoretical. I managed to author a POC for it: BUG: KASAN: double-free in kfree+0x5c/0xac Free of addr ffff29280be5de00 by task poc/356 CPU: 1 PID: 356 Comm: poc Not tainted 6.1.0-00001-g961aa6552c04-dirty #20 Hardware name: linux,dummy-virt (DT) Call trace: dump_backtrace.part.0+0xe0/0xf0 show_stack+0x18/0x40 dump_stack_lvl+0x64/0x80 print_report+0x188/0x48c kasan_report_invalid_free+0xa0/0xc0 ____kasan_slab_free+0x174/0x1b0 __kasan_slab_free+0x18/0x24 __kmem_cache_free+0x130/0x2e0 kfree+0x5c/0xac mbox_test_message_write+0x208/0x29c full_proxy_write+0x90/0xf0 vfs_write+0x154/0x440 ksys_write+0xcc/0x180 __arm64_sys_write+0x44/0x60 invoke_syscall+0x60/0x190 el0_svc_common.constprop.0+0x7c/0x160 do_el0_svc+0x40/0xf0 el0_svc+0x2c/0x6c el0t_64_sync_handler+0xf4/0x120 el0t_64_sync+0x18c/0x190 Allocated by task 356: kasan_save_stack+0x3c/0x70 kasan_set_track+0x2c/0x40 kasan_save_alloc_info+0x24/0x34 __kasan_kmalloc+0xb8/0xc0 kmalloc_trace+0x58/0x70 mbox_test_message_write+0x6c/0x29c full_proxy_write+0x90/0xf0 vfs_write+0x154/0x440 ksys_write+0xcc/0x180 __arm64_sys_write+0x44/0x60 invoke_syscall+0x60/0x190 el0_svc_common.constprop.0+0x7c/0x160 do_el0_svc+0x40/0xf0 el0_svc+0x2c/0x6c el0t_64_sync_handler+0xf4/0x120 el0t_64_sync+0x18c/0x190 Freed by task 357: kasan_save_stack+0x3c/0x70 kasan_set_track+0x2c/0x40 kasan_save_free_info+0x38/0x5c ____kasan_slab_free+0x13c/0x1b0 __kasan_slab_free+0x18/0x24 __kmem_cache_free+0x130/0x2e0 kfree+0x5c/0xac mbox_test_message_write+0x208/0x29c full_proxy_write+0x90/0xf0 vfs_write+0x154/0x440 ksys_write+0xcc/0x180 __arm64_sys_write+0x44/0x60 invoke_syscall+0x60/0x190 el0_svc_common.constprop.0+0x7c/0x160 do_el0_svc+0x40/0xf0 el0_svc+0x2c/0x6c el0t_64_sync_handler+0xf4/0x120 el0t_64_sync+0x18c/0x190 Signed-off-by: Lee Jones <lee@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: mailbox-test: Explicitly include header for spinlock supportLee Jones2023-05-041-0/+1
| | | | | | | | | | | | | | Presently the support appears to be implied. Signed-off-by: Lee Jones <lee@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: Use of_property_read_bool() for boolean propertiesRob Herring2023-04-182-6/+2
| | | | | | | | | | | | | | | | | | | | It is preferred to use typed property access functions (i.e. of_property_read_<type> functions) rather than low-level of_get_property/of_find_property functions for reading properties. Convert reading boolean properties to to of_property_read_bool(). Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: pcc: Use mbox_bind_clientElliot Berman2023-04-181-39/+45
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use generic mbox_bind_client() to bind omap mailbox channel to a client. mbox_bind_client is identical to the replaced lines, except that it: - Does the operation under con_mutex which prevents possible races in removal path - Sets TXDONE_BY_ACK if pcc uses TXDONE_BY_POLL and the client knows when tx is done. TXDONE_BY_ACK is already set if there's no interrupt, so this is not applicable. - Calls chan->mbox->ops->startup. This is usecase for requesting irq: move the devm_request_irq into the startup callback and unregister it in the shutdown path. Tested-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: omap: Use mbox_bind_clientElliot Berman2023-04-181-18/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use generic mbox_bind_client() to bind omap mailbox channel to a client. mbox_bind_client is identical to the replaced lines, except that it: - Does the operation under con_mutex which prevents possible races in removal path - Sets TXDONE_BY_ACK if omap uses TXDONE_BY_POLL. omap uses TXDONE_BY_IRQ, so this check is not applicable. - Calls chan->mbox->ops->startup, if available. omap doesn't have, so this is not applicable. Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: Allow direct registration to a channelElliot Berman2023-04-181-28/+68
| | | | | | | | | | | | | | | | | | | | Support virtual mailbox controllers and clients which are not platform devices or come from the devicetree by allowing them to match client to channel via some other mechanism. Tested-by: Sudeep Holla <sudeep.holla@arm.com> (pcc) Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* | Merge tag 'modules-6.4-rc1' of ↵Linus Torvalds2023-04-282-2/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux Pull module updates from Luis Chamberlain: "The summary of the changes for this pull requests is: - Song Liu's new struct module_memory replacement - Nick Alcock's MODULE_LICENSE() removal for non-modules - My cleanups and enhancements to reduce the areas where we vmalloc module memory for duplicates, and the respective debug code which proves the remaining vmalloc pressure comes from userspace. Most of the changes have been in linux-next for quite some time except the minor fixes I made to check if a module was already loaded prior to allocating the final module memory with vmalloc and the respective debug code it introduces to help clarify the issue. Although the functional change is small it is rather safe as it can only *help* reduce vmalloc space for duplicates and is confirmed to fix a bootup issue with over 400 CPUs with KASAN enabled. I don't expect stable kernels to pick up that fix as the cleanups would have also had to have been picked up. Folks on larger CPU systems with modules will want to just upgrade if vmalloc space has been an issue on bootup. Given the size of this request, here's some more elaborate details: The functional change change in this pull request is the very first patch from Song Liu which replaces the 'struct module_layout' with a new 'struct module_memory'. The old data structure tried to put together all types of supported module memory types in one data structure, the new one abstracts the differences in memory types in a module to allow each one to provide their own set of details. This paves the way in the future so we can deal with them in a cleaner way. If you look at changes they also provide a nice cleanup of how we handle these different memory areas in a module. This change has been in linux-next since before the merge window opened for v6.3 so to provide more than a full kernel cycle of testing. It's a good thing as quite a bit of fixes have been found for it. Jason Baron then made dynamic debug a first class citizen module user by using module notifier callbacks to allocate / remove module specific dynamic debug information. Nick Alcock has done quite a bit of work cross-tree to remove module license tags from things which cannot possibly be module at my request so to: a) help him with his longer term tooling goals which require a deterministic evaluation if a piece a symbol code could ever be part of a module or not. But quite recently it is has been made clear that tooling is not the only one that would benefit. Disambiguating symbols also helps efforts such as live patching, kprobes and BPF, but for other reasons and R&D on this area is active with no clear solution in sight. b) help us inch closer to the now generally accepted long term goal of automating all the MODULE_LICENSE() tags from SPDX license tags In so far as a) is concerned, although module license tags are a no-op for non-modules, tools which would want create a mapping of possible modules can only rely on the module license tag after the commit 8b41fc4454e ("kbuild: create modules.builtin without Makefile.modbuiltin or tristate.conf"). Nick has been working on this *for years* and AFAICT I was the only one to suggest two alternatives to this approach for tooling. The complexity in one of my suggested approaches lies in that we'd need a possible-obj-m and a could-be-module which would check if the object being built is part of any kconfig build which could ever lead to it being part of a module, and if so define a new define -DPOSSIBLE_MODULE [0]. A more obvious yet theoretical approach I've suggested would be to have a tristate in kconfig imply the same new -DPOSSIBLE_MODULE as well but that means getting kconfig symbol names mapping to modules always, and I don't think that's the case today. I am not aware of Nick or anyone exploring either of these options. Quite recently Josh Poimboeuf has pointed out that live patching, kprobes and BPF would benefit from resolving some part of the disambiguation as well but for other reasons. The function granularity KASLR (fgkaslr) patches were mentioned but Joe Lawrence has clarified this effort has been dropped with no clear solution in sight [1]. In the meantime removing module license tags from code which could never be modules is welcomed for both objectives mentioned above. Some developers have also welcomed these changes as it has helped clarify when a module was never possible and they forgot to clean this up, and so you'll see quite a bit of Nick's patches in other pull requests for this merge window. I just picked up the stragglers after rc3. LWN has good coverage on the motivation behind this work [2] and the typical cross-tree issues he ran into along the way. The only concrete blocker issue he ran into was that we should not remove the MODULE_LICENSE() tags from files which have no SPDX tags yet, even if they can never be modules. Nick ended up giving up on his efforts due to having to do this vetting and backlash he ran into from folks who really did *not understand* the core of the issue nor were providing any alternative / guidance. I've gone through his changes and dropped the patches which dropped the module license tags where an SPDX license tag was missing, it only consisted of 11 drivers. To see if a pull request deals with a file which lacks SPDX tags you can just use: ./scripts/spdxcheck.py -f \ $(git diff --name-only commid-id | xargs echo) You'll see a core module file in this pull request for the above, but that's not related to his changes. WE just need to add the SPDX license tag for the kernel/module/kmod.c file in the future but it demonstrates the effectiveness of the script. Most of Nick's changes were spread out through different trees, and I just picked up the slack after rc3 for the last kernel was out. Those changes have been in linux-next for over two weeks. The cleanups, debug code I added and final fix I added for modules were motivated by David Hildenbrand's report of boot failing on a systems with over 400 CPUs when KASAN was enabled due to running out of virtual memory space. Although the functional change only consists of 3 lines in the patch "module: avoid allocation if module is already present and ready", proving that this was the best we can do on the modules side took quite a bit of effort and new debug code. The initial cleanups I did on the modules side of things has been in linux-next since around rc3 of the last kernel, the actual final fix for and debug code however have only been in linux-next for about a week or so but I think it is worth getting that code in for this merge window as it does help fix / prove / evaluate the issues reported with larger number of CPUs. Userspace is not yet fixed as it is taking a bit of time for folks to understand the crux of the issue and find a proper resolution. Worst come to worst, I have a kludge-of-concept [3] of how to make kernel_read*() calls for modules unique / converge them, but I'm currently inclined to just see if userspace can fix this instead" Link: https://lore.kernel.org/all/Y/kXDqW+7d71C4wz@bombadil.infradead.org/ [0] Link: https://lkml.kernel.org/r/025f2151-ce7c-5630-9b90-98742c97ac65@redhat.com [1] Link: https://lwn.net/Articles/927569/ [2] Link: https://lkml.kernel.org/r/20230414052840.1994456-3-mcgrof@kernel.org [3] * tag 'modules-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux: (121 commits) module: add debugging auto-load duplicate module support module: stats: fix invalid_mod_bytes typo module: remove use of uninitialized variable len module: fix building stats for 32-bit targets module: stats: include uapi/linux/module.h module: avoid allocation if module is already present and ready module: add debug stats to help identify memory pressure module: extract patient module check into helper modules/kmod: replace implementation with a semaphore Change DEFINE_SEMAPHORE() to take a number argument module: fix kmemleak annotations for non init ELF sections module: Ignore L0 and rename is_arm_mapping_symbol() module: Move is_arm_mapping_symbol() to module_symbol.h module: Sync code of is_arm_mapping_symbol() scripts/gdb: use mem instead of core_layout to get the module address interconnect: remove module-related code interconnect: remove MODULE_LICENSE in non-modules zswap: remove MODULE_LICENSE in non-modules zpool: remove MODULE_LICENSE in non-modules x86/mm/dump_pagetables: remove MODULE_LICENSE in non-modules ...
| * | mailbox: zynq: make modularNick Alcock2023-04-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver has a MODULE_LICENSE but is not tristate so cannot be built as a module, unlike all its peers: make it modular to match. Signed-off-by: Nick Alcock <nick.alcock@oracle.com> Suggested-by: Michal Simek <michal.simek@xilinx.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: linux-modules@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Hitomi Hasegawa <hasegawa-hitomi@fujitsu.com> Cc: Jassi Brar <jassisinghbrar@gmail.com> Cc: Michal Simek <michal.simek@xilinx.com> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
| * | mailbox: rockchip: remove MODULE_LICENSE in non-modulesNick Alcock2023-04-131-1/+0
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 8b41fc4454e ("kbuild: create modules.builtin without Makefile.modbuiltin or tristate.conf"), MODULE_LICENSE declarations are used to identify modules. As a consequence, uses of the macro in non-modules will cause modprobe to misidentify their containing object file as a module when it is not (false positives), and modprobe might succeed rather than failing with a suitable error message. So remove it in the files in this commit, none of which can be built as modules. Signed-off-by: Nick Alcock <nick.alcock@oracle.com> Suggested-by: Luis Chamberlain <mcgrof@kernel.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: linux-modules@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Hitomi Hasegawa <hasegawa-hitomi@fujitsu.com> Cc: Jassi Brar <jassisinghbrar@gmail.com> Cc: Heiko Stuebner <heiko@sntech.de> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-rockchip@lists.infradead.org Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
* | Merge tag 'rproc-v6.4' of ↵Linus Torvalds2023-04-261-4/+9
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux Pull remoteproc updates from Bjorn Andersson: - Unnecessary type casts from the 'void *' rproc->priv pointer are dropped throughout the subsystem. - A kernel-doc error is corrected in the Mediatek SCPI IPI implementation - The firmware loading onto the IMX DSP remote processors is reworked to avoid non-32bit memory operations. A module parameter is introduced to assist development of firmware without communication abilities in place. Error paths in imx_dsp_rproc_mbox_alloc() is cleaned up - The cluster configuration handling in the TI K3 R5 driver is corrected and support for the single-R5 core found in the TI AM62x SoC family is introduced - The TI PRU driver device- to virtual-address translation is updated to avoid compiler warning about the unsigned device-address always being larger than 0 - The ST remoteproc driver is transitioned to use of_property_present() - Issues with kicks arriving after the STM32 remote processor has been shut down are mitigated by checking the processor's state before handling them. - Support for mailbox channels for communication with the remote processors are added to the Xilinx R5 remoteproc driver. The naming of carveouts are corrected and their parsing is reworked. For this a couple of fixes targeting the mailbox subsystem are picked up here as well. - Reference counting of of_nodes are corrected in the ST, STM32, RCAR and IMX remoteproc drivers * tag 'rproc-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux: (24 commits) remoteproc: st: Use of_property_present() for testing DT property presence dt-bindings: remoteproc: Drop unneeded quotes remoteproc: imx_dsp_rproc: Fix kernel test robot sparse warning remoteproc: imx_dsp_rproc: Improve exception handling in imx_dsp_rproc_mbox_alloc() remoteproc: pru: Remove always true check positive unsigned value dt-bindings: remoteproc: stm32-rproc: Typo fix remoteproc: stm32_rproc: Add mutex protection for workqueue remoteproc: Remove unnecessary (void*) conversions remoteproc: imx_dsp_rproc: Call of_node_put() on iteration error remoteproc: imx_rproc: Call of_node_put() on iteration error remoteproc: rcar_rproc: Call of_node_put() on iteration error remoteproc: st: Call of_node_put() on iteration error remoteproc: stm32: Call of_node_put() on iteration error remoteproc: k3-r5: Use separate compatible string for TI AM62x SoC family dt-bindings: remoteproc: ti: Add new compatible for AM62 SoC family remoteproc: k3-r5: Simplify cluster mode setting usage remoteproc/mtk_scpi_ipi: Fix one kernel-doc comment remoteproc: xilinx: Add mailbox channels for rpmsg drivers: remoteproc: xilinx: Fix carveout names mailbox: zynqmp: Fix typo in IPI documentation ...
| * | mailbox: zynqmp: Fix IPI isr handlingTanmay Shah2023-03-141-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Multiple IPI channels are mapped to same interrupt handler. Current isr implementation handles only one channel per isr. Fix this behavior by checking isr status bit of all child mailbox nodes. Fixes: 4981b82ba2ff ("mailbox: ZynqMP IPI mailbox controller") Signed-off-by: Tanmay Shah <tanmay.shah@amd.com> Acked-by: Michal Simek <michal.simek@amd.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230311012407.1292118-3-tanmay.shah@amd.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
| * | mailbox: zynqmp: Fix counts of child nodesTanmay Shah2023-03-141-1/+6
| |/ | | | | | | | | | | | | | | | | | | | | | | | | If child mailbox node status is disabled it causes crash in interrupt handler. Fix this by assigning only available child node during driver probe. Fixes: 4981b82ba2ff ("mailbox: ZynqMP IPI mailbox controller") Signed-off-by: Tanmay Shah <tanmay.shah@amd.com> Acked-by: Michal Simek <michal.simek@amd.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230311012407.1292118-2-tanmay.shah@amd.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
* | mailbox: mpfs: check the service status in .tx_done()Conor Dooley2023-04-031-16/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Services are supposed to generate an interrupt once completed, whether or not they have do so successfully. What appears to be a bug in the system controller means that interrupts are only generated for *successful* services. Currently, the status of a service is only checked in the mpfs_mbox_rx_data() once an interrupt is received. As it turns out, this is not really helpful where the potentially buggy behaviour is present, as we'll only see the status for successes where it is moot anyway. Jassi suggested moving the check to the .tx_done() callback instead. This makes sense, as the busy bit that tx_done() is polling will be lowered on completion, regardless of whether the service passed or failed. That allows us to check the status bits for all services, whether they generate an interrupt or not & pass something more informative than -EBADMSG back to the drivers implementing individual services. Suggested-by: Jassi Brar <jassisinghbrar@gmail.com> Acked-by: Jassi Brar <jaswinder.singh@linaro.org> Tested-by: Valentina Fernandez <valentina.fernandezalanis@microchip.com> Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
* | mailbox: mpfs: ditch a useless busy checkConor Dooley2023-04-031-6/+4
| | | | | | | | | | | | | | | | | | | | | | | | mpfs_mbox_rx_data() already checks if the system controller is busy before attempting to do anything, so drop the second check before reading any data. No functional change intended. Acked-by: Jassi Brar <jaswinder.singh@linaro.org> Tested-by: Valentina Fernandez <valentina.fernandezalanis@microchip.com> Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
* | mailbox: mpfs: switch to txdone_pollConor Dooley2023-04-031-2/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The system controller on PolarFire SoC has no interrupt to signify that the TX has been completed. The interrupt instead signals that a service requested by the mailbox client has succeeded. If a service fails, there will be no interrupt delivered. Switch to polling the busy register to determine whether transmission has completed. Fixes: 83d7b1560810 ("mbox: add polarfire soc system controller mailbox") Acked-by: Jassi Brar <jaswinder.singh@linaro.org> Tested-by: Valentina Fernandez <valentina.fernandezalanis@microchip.com> Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
* | mailbox: mpfs: fix an incorrect mask widthConor Dooley2023-04-031-1/+2
|/ | | | | | | | | | | | | | | | The system controller registers on PolarFire SoC are 32 bits wide, so 16 + 16 as the first input to GENMASK_ULL() gives a 33 bit wide mask. It probably should have been immediately obvious when it was pointed out during review that the width required using GENMASK_ULL() - but I scarcely knew what I was doing at the time and missed it. The mistake ends up being moot as it is a mask after all, but it is incorrect and should be fixed. No functional change intended. Acked-by: Jassi Brar <jaswinder.singh@linaro.org> Tested-by: Valentina Fernandez <valentina.fernandezalanis@microchip.com> Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
* mailbox: qcom-apcs-ipc: add IPQ5332 APSS clock supportKathiravan T2023-02-231-0/+1
| | | | | | | | | | | | | IPQ5332 has the APSS clock controller utilizing the same register space as the APCS, so provide access to the APSS utilizing a child device like other IPQ chipsets. Like IPQ6018, the same controller and driver is used, so utilize IPQ6018 match data for IPQ5332. Signed-off-by: Kathiravan T <quic_kathirav@quicinc.com> Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: qcom-apcs-ipc: enable APCS clock device for MSM8996Dmitry Baryshkov2023-02-231-1/+1
| | | | | | | | | MSM8996 also has the clock-related part of the APCS mailbox device. Follow the usual pattern and create a child device to handle these clocks. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: zynq: Switch to flexible array to simplify codeChristophe JAILLET2023-02-231-4/+2
| | | | | | | | | | Using flexible array is more straight forward. It - saves 1 pointer in the 'zynqmp_ipi_pdata' structure - saves an indirection when using this array - saves some LoC and avoids some always spurious pointer arithmetic Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* Merge tag 'mailbox-v6.2' of ↵Linus Torvalds2022-12-217-57/+118
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.linaro.org/landing-teams/working/fujitsu/integration Pull mailbox updates from Jassi Brar: - qcom: enable sc8280xp, sm8550 and sm4250 support - ti: default to ARCH_K3 for msg manager - mediatek: - add mt8188 and mt8186 support - request irq only after got ready - zynq-ipi: fix error handling after device_register - mpfs: check sys-con status - rockchip: simplify by using device_get_match_data * tag 'mailbox-v6.2' of git://git.linaro.org/landing-teams/working/fujitsu/integration: dt-bindings: mailbox: qcom-ipcc: Add compatible for SM8550 mailbox: mtk-cmdq: Do not request irq until we are ready mailbox: zynq-ipi: fix error handling while device_register() fails mailbox: mtk-cmdq-mailbox: Use platform data directly instead of copying mailbox: arm_mhuv2: Fix return value check in mhuv2_probe() dt-bindings: mailbox: mediatek,gce-mailbox: add mt8188 compatible name dt-bindings: mailbox: add GCE header file for mt8188 mailbox: mpfs: read the system controller's status mailbox: mtk-cmdq: add MT8186 support mailbox: mtk-cmdq: add gce ddr enable support flow mailbox: mtk-cmdq: add gce software ddr enable private data mailbox: mtk-cmdq: Use GCE_CTRL_BY_SW definition instead of number mailbox: rockchip: Use device_get_match_data() to simplify the code dt-bindings: mailbox: qcom-ipcc: Add sc8280xp compatible mailbox: config: ti-msgmgr: Default set to ARCH_K3 for TI msg manager mailbox: qcom-apcs-ipc: Add SM4250 APCS IPC support dt-bindings: mailbox: qcom: Add SM4250 APCS compatible
| * mailbox: mtk-cmdq: Do not request irq until we are readyRicardo Ribalda2022-12-191-6/+7
| | | | | | | | | | | | | | | | | | | | | | If the system comes from kexec() the peripheral might trigger an IRQ befoe we are ready for it. Triggering a crash due to an access to invalid memory. Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: zynq-ipi: fix error handling while device_register() failsYang Yingliang2022-12-191-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If device_register() fails, it has two issues: 1. The name allocated by dev_set_name() is leaked. 2. The parent of device is not NULL, device_unregister() is called in zynqmp_ipi_free_mboxes(), it will lead a kernel crash because of removing not added device. Call put_device() to give up the reference, so the name is freed in kobject_cleanup(). Add device registered check in zynqmp_ipi_free_mboxes() to avoid null-ptr-deref. Fixes: 4981b82ba2ff ("mailbox: ZynqMP IPI mailbox controller") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: mtk-cmdq-mailbox: Use platform data directly instead of copyingAngeloGioacchino Del Regno2022-12-191-49/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Copying platform data to struct cmdq serves to no purpose, as that data is never modified during runtime: it's worth at this point storing a pointer to gce_plat in gce and. Remove all duplicated `struct gce_plat` members from `struct gce` and reuse the platform data across the driver to save some memory. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: arm_mhuv2: Fix return value check in mhuv2_probe()Yang Yingliang2022-12-191-2/+2
| | | | | | | | | | | | | | | | | | | | | | If devm_of_iomap() fails, it returns ERR_PTR() and never return NULL, so replace NULL pointer check with IS_ERR() to fix this problem. Fixes: 5a6338cce9f4 ("mailbox: arm_mhuv2: Add driver") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: mpfs: read the system controller's statusConor Dooley2022-12-191-3/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some services explicitly return an error code in their response, but others rely on the system controller to set a status in its status register. The meaning of the bits varies based on what service is requested, so pass it back up to the driver that requested the service in the first place. The field in the message struct already existed, but was unused until now. If the system controller is busy, in which case we should never actually be in the interrupt handler, or if the service fails the mailbox itself should not be read. Callers should check the status before operating on the response. There's an existing, but unused, #define for the mailbox mask - but it was incorrect. It was doing a GENMASK_ULL(32, 16) which should've just been a GENMASK(31, 16), so fix that up and start using it. Fixes: 83d7b1560810 ("mbox: add polarfire soc system controller mailbox") Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: mtk-cmdq: add MT8186 supportYongqiang Niu2022-12-191-0/+9
| | | | | | | | | | | | | | | | | | add MT8186 cmdq support Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: CK Hu <ck.hu@mediatek.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: mtk-cmdq: add gce ddr enable support flowYongqiang Niu2022-12-191-0/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | add gce ddr enable control flow when gce suspend/resume when all cmdq instruction task has been processed done, we need set this gce ddr enable to disable status to tell cmdq hardware gce there is none task need process, and the hardware can go into idle mode and no access ddr anymore, then the spm can go into suspend. the original issue is gce still access ddr when cmdq suspend function call, but there is no task run. so, we need control gce access ddr with this flow. when cmdq suspend function, there is no task need process, we can disable gce access ddr, to make sure system go into suspend success. Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: CK Hu <ck.hu@mediatek.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: mtk-cmdq: add gce software ddr enable private dataYongqiang Niu2022-12-191-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | if gce work control by software, we need set software enable for MT8186 Soc there is a handshake flow between gce and ddr hardware, if not set ddr enable flag of gce, ddr will fall into idle mode, then gce instructions will not process done. we need set this flag of gce to tell ddr when gce is idle or busy controlled by software flow. 0x48[2:0] means control by software 0x48[18:16] means ddr enable 0x48[2:0] is pre-condition of 0x48[18:16]. if we want set 0x48[18:16] ddr enable, 0x48[2:0] must be set at same time. and only these bits is useful, other bits is useless bits Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com> Reviewed-by: CK Hu <ck.hu@mediatek.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: mtk-cmdq: Use GCE_CTRL_BY_SW definition instead of numberYongqiang Niu2022-12-191-1/+3
| | | | | | | | | | | | | | | | | | Use GCE_CTRL_BY_SW definition instead of number Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: CK Hu <ck.hu@mediatek.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: rockchip: Use device_get_match_data() to simplify the codeye xingchen2022-12-191-3/+1
| | | | | | | | | | | | | | Directly get the match data with device_get_match_data(). Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * mailbox: config: ti-msgmgr: Default set to ARCH_K3 for TI msg managerNicolas Frayer2022-12-191-0/+1
| | | | | | | | | | | | | | Defaulting the build to ARCH_K3 for the TI message manager driver. Signed-off-by: Nicolas Frayer <nfrayer@baylibre.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 01:03:24 +0100