- 15 Feb, 2019 1 commit
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Tomas Winkler authored
commit efe814e9 upstream. Add icelake mei device id. Cc: <stable@vger.kernel.org> Signed-off-by:
Tomas Winkler <tomas.winkler@intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 31 Jan, 2019 2 commits
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Tomas Winkler authored
commit f7ee8ead upstream. Add the Denverton innovation engine (IE) device ids. The IE is an ME-like device which provides HW security offloading. Cc: <stable@vger.kernel.org> Signed-off-by:
Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by:
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Alexander Usyskin authored
commit 173436ba upstream. The LBG server platform sports DMA support. Cc: <stable@vger.kernel.org> #v5.0+ Signed-off-by:
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- 20 Feb, 2018 2 commits
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Tomas Winkler authored
Add cannon point device ids for 4th (itouch) device. Cc: <stable@vger.kernel.org> 4.14+ Signed-off-by:
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Alexander Usyskin authored
Add CNP LP and CNP H device ids for cannon lake and coffee lake platforms. Cc: <stable@vger.kernel.org> 4.14+ Signed-off-by:
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- 02 Jan, 2018 1 commit
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Tomas Winkler authored
>From the pci power documentation: "The driver itself should not call pm_runtime_allow(), though. Instead, it should let user space or some platform-specific code do that (user space can do it via sysfs as stated above)..." However, the S0ix residency cannot be reached without MEI device getting into low power state. Hence, for mei devices that support D0i3, it's better to make runtime power management mandatory and not rely on the system integration such as udev rules. This policy cannot be applied globally as some older platforms were found to have broken power management. Cc: <stable@vger.kernel.org> v4.13+ Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
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- 06 Nov, 2017 1 commit
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Rafael J. Wysocki authored
Replace the PCI-specific flag PCI_DEV_FLAGS_NEEDS_RESUME with the PM core's DPM_FLAG_NEVER_SKIP one everywhere and drop it. Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by:
Bjorn Helgaas <bhelgaas@google.com> Reviewed-by:
Ulf Hansson <ulf.hansson@linaro.org>
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- 04 Oct, 2017 2 commits
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Tomas Winkler authored
Add Gemini Lake (GLK) device id. Signed-off-by:
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Alexander Usyskin authored
This patch fixes a regression caused by the new changes in the "run wake" handlers. The mei devices that support D0i3 are no longer receiving an interrupt after entering runtime suspend state and will stall. pci_dev_run_wake function now returns "true" for some devices (including mei) for which it used to return "false", arguably incorrectly as "run wake" used to mean that wakeup signals can be generated for a device in the working state of the system, so it could not be enabled or disabled before too. MEI maps runtime suspend/resume to its own defined power gating (PG) states, (D0i3 or other depending on generation), hence we need to go around the native PCI runtime service which eventually brings the device into D3cold/hot state, but the mei devices cannot wake up from D3 unlike from D0i3/PG state, which keeps irq running. To get around PCI device native runtime pm, MEI uses runtime pm domain handlers which take precedence. Cc: <stable@vger.kernel.org> #4.13+ Signed-off-by:
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- 10 Aug, 2017 1 commit
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Alexander Usyskin authored
MEI device performs link reset during system suspend sequence. The link reset cannot be performed while device is in runtime suspend state. The resume sequence is bypassed with suspend direct complete optimization,so the optimization should be disabled for mei devices. Fixes: [ 192.940537] Restarting tasks ... [ 192.940610] PGI is not set [ 192.940619] ------------[ cut here ]------------ [ 192.940623] WARNING: CPU: 0 me.c:653 mei_me_pg_exit_sync+0x351/0x360 [ 192.940624] Modules linked in: [ 192.940627] CPU: 0 PID: 1661 Comm: kworker/0:3 Not tainted 4.13.0-rc2+ #2 [ 192.940628] Hardware name: Dell Inc. XPS 13 9343/0TM99H, BIOS A11 12/08/2016 [ 192.940630] Workqueue: pm pm_runtime_work <snip> [ 192.940642] Call Trace: [ 192.940646] ? pci_pme_active+0x1de/0x1f0 [ 192.940649] ? pci_restore_standard_config+0x50/0x50 [ 192.940651] ? kfree+0x172/0x190 [ 192.940653] ? kfree+0x172/0x190 [ 192.940655] ? pci_restore_standard_config+0x50/0x50 [ 192.940663] mei_me_pm_runtime_resume+0x3f/0xc0 [ 192.940665] pci_pm_runtime_resume+0x7a/0xa0 [ 192.940667] __rpm_callback+0xb9/0x1e0 [ 192.940668] ? preempt_count_add+0x6d/0xc0 [ 192.940670] rpm_callback+0x24/0x90 [ 192.940672] ? pci_restore_standard_config+0x50/0x50 [ 192.940674] rpm_resume+0x4e8/0x800 [ 192.940676] pm_runtime_work+0x55/0xb0 [ 192.940678] process_one_work+0x184/0x3e0 [ 192.940680] worker_thread+0x4d/0x3a0 [ 192.940681] ? preempt_count_sub+0x9b/0x100 [ 192.940683] kthread+0x122/0x140 [ 192.940684] ? process_one_work+0x3e0/0x3e0 [ 192.940685] ? __kthread_create_on_node+0x1a0/0x1a0 [ 192.940688] ret_from_fork+0x27/0x40 [ 192.940690] Code: 96 3a 9e ff 48 8b 7d 98 e8 cd 21 58 00 83 bb bc 01 00 00 04 0f 85 40 fe ff ff e9 41 fe ff ff 48 c7 c7 5f 04 99 96 e8 93 6b 9f ff <0f> ff e9 5d fd ff ff e8 33 fe 99 ff 0f 1f 00 0f 1f 44 00 00 55 [ 192.940719] ---[ end trace a86955597774ead8 ]--- [ 192.942540] done. Suggested-by:
Dominik Brodowski <linux@dominikbrodowski.net> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by:
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- 17 Jul, 2017 2 commits
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Tomas Winkler authored
Device 'new_id' interface is useful for testing of not yet published hardware on older kernels and for internally used device ids on simulation platforms. However currently with the device configuration held in device_id driver data as a pointer to mei_cfg structure it is hard, as one need to locate the address of the correct structure. A recommended way of doing that is to use and index instead of a pointer. This patch adds a new list of configuration mei_cfg_list[] indexed via enum mei_cfg_idx. In addition it cleanups ich platform naming, renames legacy generation to ich and what was ich to ich10. Signed-off-by:
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Alexander Usyskin authored
On some platforms, currently Broxton, Apollo Lake and Kaby Lake, ME FW may be busy with internal bookkeeping and answering late to the start message. As a mitigation, the driver requests for a synchronous probing to prevent stalling of the overall boot process. For example, on a Apollo Lake platform the overall boot time has reduced from ~0.9 to ~0.6 seconds on average. Signed-off-by:
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- 08 Apr, 2017 1 commit
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Tomas Winkler authored
The shutdown handler quiesces the device, it performs link reset in order to close all connections and notify the device that is not longer managed by the driver. This is essentially a stripped down version of the PCI remove() function where only the necessary amount of work is done to stop any further activity. Signed-off-by:
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- 31 Jan, 2017 1 commit
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Tomas Winkler authored
Use devm_ and pcim_ functions to make error handling simpler and code smaller and tidier. Based on original patch by mei: me: use managed functions pcim_* and devm_* https://lkml.org/lkml/2016/2/1/339 Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
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- 29 Nov, 2016 1 commit
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Tomas Winkler authored
Add MEI Lewisburg PCH IDs for Purley based workstations. Cc: <stable@vger.kernel.org> # 4.8.x Signed-off-by:
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- 27 Sep, 2016 1 commit
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Alexander Usyskin authored
The stall timer worker checks periodically if there is a stalled i/o transaction. The issue with the current implementation is that the timer is ticking also when there is no pending i/o transaction. This patch provides a simple change that prevents rescheduling of the delayed work when there is no pending i/o. Cc: Andy Lutomirski <luto@kernel.org> Signed-off-by:
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- 12 Sep, 2016 1 commit
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Alexander Usyskin authored
Add device ids for Intel Kabypoint PCH (Kabylake) Cc: <stable@vger.kernel.org> #4.6+ Signed-off-by:
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- 30 Aug, 2016 2 commits
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Alexander Usyskin authored
Schedule link reset if failed to perform runtime suspend or resume. Set active runtime pm stte on link reset to clean runtimr pm error, if present. Signed-off-by:
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Tomas Winkler authored
Sunrise Point PCH with SPS Firmware doesn't expose working MEI interface, we need to quirk it out. The SPS Firmware is identifiable only on the first PCI function of the device. Cc: <stable@vger.kernel.org> #4.6+ Tested-by:
Sujith Pandel <sujith_pandel@dell.com> Signed-off-by:
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- 02 Mar, 2016 1 commit
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Tomas Winkler authored
Add device ids for Broxton SoC based devices. Signed-off-by:
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- 07 Feb, 2016 1 commit
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Alexander Usyskin authored
If registering of character device failed stop the device properly. Signed-off-by:
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- 08 Jan, 2016 1 commit
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Tomeu Vizoso authored
Adds a function that sets the pointer to dev_pm_domain in struct device and that warns if the device has already finished probing. The reason why we want to enforce that is because in the general case that can cause problems and also that we can simplify code quite a bit if we can always assume that. This patch also changes all current code that directly sets the dev.pm_domain pointer. Signed-off-by:
Tomeu Vizoso <tomeu.vizoso@collabora.com> Reviewed-by:
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- 04 Aug, 2015 2 commits
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Tomas Winkler authored
Add MEI devices ids for Intel Sunrisepoint Skylake (PCH) Signed-off-by:
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Alexander Usyskin authored
D0i3 adds additional interrupt reason bit, therefore we add a variable intr_source to save the interrupt causes for further dispatching. The interrupt cause is saved in the irq quick handler to achieve unified behavior for both MSI enabled and shared interrupt platforms. Signed-off-by:
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- 26 Mar, 2015 1 commit
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Christoph Hellwig authored
struct kiocb now is a generic I/O container, so move it to fs.h. Also do a #include diet for aio.h while we're at it. Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk>
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- 02 Mar, 2015 1 commit
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Alexander Usyskin authored
The current power gating naming was confusing, we wish to swap meanings of register and flow level power gating terms, For registers writing level use terms set and unset: mei_me_pg_set, mei_me_pg_unset For flow/high level use power gating enter and power gating exit terms mei_me_pg_enter_sync, mei_me_pg_exit_sync Signed-off-by:
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- 05 Dec, 2014 1 commit
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Rafael J. Wysocki authored
After commit b2b49ccb (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is selected) PM_RUNTIME is always set if PM is set, so #ifdef blocks depending on CONFIG_PM_RUNTIME may now be changed to depend on CONFIG_PM. Replace CONFIG_PM_RUNTIME with CONFIG_PM everywhere under drivers/misc/. Signed-off-by:
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- 27 Nov, 2014 1 commit
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Alexander Usyskin authored
ME devices prior to PCH8 (Lynx Point) have two FW status registers, on PCH8 and newer excluding txe there are six FW status registers. Signed-off-by:
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- 29 Sep, 2014 4 commits
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Alexander Usyskin authored
Add missed parameters descriptions and return values descriptions Signed-off-by:
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Alexander Usyskin authored
Fix Kdoc documentation formatting warnings genertaed by ./scripts/kernel-doc Signed-off-by:
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Tomas Winkler authored
For purpose of adding testing HW we would like to get rid of pci dependency in generic mei code. Signed-off-by:
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Tomas Winkler authored
For purpose of adding testing HW we would like to get rid of pci dependency in generic mei code This patch provides only straight forward changes FW status and prob quirks need to be handled separately Signed-off-by:
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- 26 Sep, 2014 1 commit
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Geert Uytterhoeven authored
Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Acked-by:
Jiri Kosina <jkosina@suse.cz>
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- 18 Jul, 2014 1 commit
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Alexander Usyskin authored
Calling pm_schedule_suspend from the runtime pm idle callback may reschedule existing timer, thus in case of frequent runtime rpm idle call the suspend maybe starved. Instead we call pm_runtime_autosuspend which is checking if the timer is already charged. An example is monitoring device pci config space. Pci config sysfs handlers calls pci_config_pm_runtime_put/get helpers which in turns calls to device idle callback Cc: stable@vger.kernel.org # 3.15+ Signed-off-by:
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- 09 Jul, 2014 2 commits
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Alexander Usyskin authored
Add WPT second mei interface. Signed-off-by:
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Alexander Usyskin authored
We need to support more then one mei interface hence the simple misc devices is not longer an option In order not break the user space a device with pci function 0 need to be linked to /dev/mei Signed-off-by:
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- 27 May, 2014 2 commits
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Tomas Winkler authored
Move quirk FW type detector to cfg structure Signed-off-by:
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Alexander Usyskin authored
Add mei_cfg structure that holds per device configuration data and hooks, as the first step we add firmware status register offsets Signed-off-by:
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- 03 May, 2014 2 commits
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Tomas Winkler authored
For non wakeable devices we can't use pci runtime framework as we are not able to wakeup from D3 states. Instead we create new pg runtime domain that only drives ME power gating protocol to reduce the power consumption. Signed-off-by:
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Tomas Winkler authored
Add runtime pm framework for ME devices. The runtime pm handlers are used to run me power gating isolation protocol Signed-off-by:
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