BMC/Intel-BMC/linux.git/Documentation/userspace-api/ioctl, branch dev-5.15-intel

mailbox: ioctl to fetch mailbox size

2021-11-05T07:22:15+00:00

The size of mailbox differ from AST2500, AST2600 A0 and A1. Add an ioctl support to fetch the mailbox size. Tested: Verfied ioctl call returns mailbox size as expected. Change-Id: I4e261aaf8aa3fb108d6ad152d30a17b114d70ccd Signed-off-by: Arun P. Mohanan

Documentation jtag: Add JTAG core driver ioctl number

2021-11-05T07:22:08+00:00

JTAG class driver provide infrastructure to support hardware/software JTAG platform drivers. It provide user layer API interface for flashing and debugging external devices which equipped with JTAG interface using standard transactions. Driver exposes set of IOCTL to user space for: - XFER: SIR (Scan Instruction Register, IEEE 1149.1 Data Register scan); SDR (Scan Data Register, IEEE 1149.1 Instruction Register scan); - GIOCSTATUS read the current TAPC state of the JTAG controller - SIOCSTATE Forces the JTAG TAPC to go into a particular state. - SIOCFREQ/GIOCFREQ for setting and reading JTAG frequency. - IOCBITBANG for low level control of JTAG signals. Signed-off-by: Oleksandr Shamray Signed-off-by: Ernesto Corona Acked-by: Philippe Ombredanne Cc: Jonathan Corbet Cc: Greg Kroah-Hartman Cc: Gustavo Pimentel Cc: Lorenzo Pieralisi Cc: Kishon Vijay Abraham I Cc: Darrick J. Wong Cc: Bryant G. Ly Cc: Eric Sandeen Cc: Randy Dunlap Cc: Tomohiro Kusumi Cc: Arnd Bergmann Cc: Mauro Carvalho Chehab Cc: Alexandre Belloni Cc: "Theodore Ts'o" Cc: Eric Biggers Cc: Steven Filary Cc: Jiri Pirko Cc: Vadim Pasternak Cc: Amithash Prasad Cc: Patrick Williams Cc: Rgrs v29->v30 v28->v29 Move ioctl number to userspace-api/ioctl/ioctl-number.rst

Documentation: ioctl: Add ioctl numbers for PECI subsystem

2021-11-05T07:22:04+00:00

This commit updates ioctl-number.rst to reflect ioctl numbers used by the PECI subsystem. Signed-off-by: Jae Hyun Yoo

ptp: Document the PTP_CLK_MAGIC ioctl number

2021-10-28T00:02:51+00:00

Add PTP_CLK_MAGIC to the userspace-api/ioctl/ioctl-number.rst documentation file. Fixes: d94ba80ebbea ("ptp: Added a brand new class driver for ptp clocks.") Signed-off-by: Randy Dunlap Cc: Richard Cochran Cc: John Stultz Cc: Jonathan Corbet Link: https://lore.kernel.org/r/20211024163831.10200-1-rdunlap@infradead.org Signed-off-by: Jakub Kicinski

Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

2021-09-11T21:48:42+00:00

Pull virtio updates from Michael Tsirkin: - vduse driver ("vDPA Device in Userspace") supporting emulated virtio block devices - virtio-vsock support for end of record with SEQPACKET - vdpa: mac and mq support for ifcvf and mlx5 - vdpa: management netlink for ifcvf - virtio-i2c, gpio dt bindings - misc fixes and cleanups * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (39 commits) Documentation: Add documentation for VDUSE vduse: Introduce VDUSE - vDPA Device in Userspace vduse: Implement an MMU-based software IOTLB vdpa: Support transferring virtual addressing during DMA mapping vdpa: factor out vhost_vdpa_pa_map() and vhost_vdpa_pa_unmap() vdpa: Add an opaque pointer for vdpa_config_ops.dma_map() vhost-iotlb: Add an opaque pointer for vhost IOTLB vhost-vdpa: Handle the failure of vdpa_reset() vdpa: Add reset callback in vdpa_config_ops vdpa: Fix some coding style issues file: Export receive_fd() to modules eventfd: Export eventfd_wake_count to modules iova: Export alloc_iova_fast() and free_iova_fast() virtio-blk: remove unneeded "likely" statements virtio-balloon: Use virtio_find_vqs() helper vdpa: Make use of PFN_PHYS/PFN_UP/PFN_DOWN helper macro vsock_test: update message bounds test for MSG_EOR af_vsock: rename variables in receive loop virtio/vsock: support MSG_EOR bit processing vhost/vsock: support MSG_EOR bit processing ...

vduse: Introduce VDUSE - vDPA Device in Userspace

2021-09-06T11:20:58+00:00

This VDUSE driver enables implementing software-emulated vDPA devices in userspace. The vDPA device is created by ioctl(VDUSE_CREATE_DEV) on /dev/vduse/control. Then a char device interface (/dev/vduse/$NAME) is exported to userspace for device emulation. In order to make the device emulation more secure, the device's control path is handled in kernel. A message mechnism is introduced to forward some dataplane related control messages to userspace. And in the data path, the DMA buffer will be mapped into userspace address space through different ways depending on the vDPA bus to which the vDPA device is attached. In virtio-vdpa case, the MMU-based software IOTLB is used to achieve that. And in vhost-vdpa case, the DMA buffer is reside in a userspace memory region which can be shared to the VDUSE userspace processs via transferring the shmfd. For more details on VDUSE design and usage, please see the follow-on Documentation commit. NB(mst): when merging this with b542e383d8c0 ("eventfd: Make signal recursion protection a task bit") replace eventfd_signal_count with eventfd_signal_allowed, and drop the previous ("eventfd: Export eventfd_wake_count to modules"). Signed-off-by: Xie Yongji Acked-by: Jason Wang Link: https://lore.kernel.org/r/20210831103634.33-13-xieyongji@bytedance.com Signed-off-by: Michael S. Tsirkin

remove the lightnvm subsystem

2021-08-14T21:54:09+00:00

Lightnvm supports the OCSSD 1.x and 2.0 specs which were early attempts to produce Open Channel SSDs and never made it into the NVMe spec proper. They have since been superceeded by NVMe enhancements such as ZNS support. Remove the support per the deprecation schedule. Signed-off-by: Christoph Hellwig Link: https://lore.kernel.org/r/20210812132308.38486-1-hch@lst.de Reviewed-by: Matias Bjørling Reviewed-by: Javier González Signed-off-by: Jens Axboe

Merge tag 'platform-drivers-x86-v5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

2021-06-30T18:15:39+00:00

Pull x86 platform driver updates from Hans de Goede: "Highlights: - New think-lmi driver adding support for changing Lenovo Thinkpad BIOS settings from within Linux using the standard firmware- attributes class sysfs API - MS Surface aggregator-cdev now also supports forwarding events to user-space (for debugging / new driver development purposes only) - New intel_skl_int3472 driver this provides the necessary glue to translate ACPI table information to GPIOs, regulators, etc. for camera sensors on Intel devices with IPU3 attached MIPI cameras - A whole bunch of other fixes + device-specific quirk additions - New devm_work_autocancel() devm-helpers.h function" * tag 'platform-drivers-x86-v5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (83 commits) platform/x86: dell-wmi-sysman: Change user experience when Admin/System Password is modified platform/x86: intel_skl_int3472: Uninitialized variable in skl_int3472_handle_gpio_resources() platform/x86: think-lmi: Move kfree(setting->possible_values) to tlmi_attr_setting_release() platform/x86: think-lmi: Split current_value to reflect only the value platform/x86: think-lmi: Fix issues with duplicate attributes platform/x86: think-lmi: Return EINVAL when kbdlang gets set to a 0 length string platform/x86: intel_cht_int33fe: Move to its own subfolder platform/x86: intel_skl_int3472: Move to intel/ subfolder platform/x86: intel_skl_int3472: Provide skl_int3472_unregister_clock() platform/x86: intel_skl_int3472: Provide skl_int3472_unregister_regulator() platform/x86: intel_skl_int3472: Use ACPI GPIO resource directly platform/x86: intel_skl_int3472: Fix dependencies (drop CLKDEV_LOOKUP) platform/x86: intel_skl_int3472: Free ACPI device resources after use platform/x86: Remove "default n" entries platform/x86: ISST: Use numa node id for cpu pci dev mapping platform/x86: ISST: Optimize CPU to PCI device mapping tools/power/x86/intel-speed-select: v1.10 release tools/power/x86/intel-speed-select: Fix uncore memory frequency display extcon: extcon-max8997: Simplify driver using devm extcon: extcon-max8997: Fix IRQ freeing at error path ...

platform/surface: aggregator_cdev: Add support for forwarding events to user-space

2021-06-16T15:47:53+00:00

Currently, debugging unknown events requires writing a custom driver. This is somewhat difficult, slow to adapt, and not entirely user-friendly for quickly trying to figure out things on devices of some third-party user. We can do better. We already have a user-space interface intended for debugging SAM EC requests, so let's add support for receiving events to that. This commit provides support for receiving events by reading from the controller file. It additionally introduces two new IOCTLs to control which event categories will be forwarded. Specifically, a user-space client can specify which target categories it wants to receive events from by registering the corresponding notifier(s) via the IOCTLs and after that, read the received events by reading from the controller device. Signed-off-by: Maximilian Luz Reviewed-by: Hans de Goede Link: https://lore.kernel.org/r/20210604134755.535590-5-luzmaximilian@gmail.com Signed-off-by: Hans de Goede

ide: remove the legacy ide driver

2021-06-16T14:53:58+00:00

The legay ide driver has been replace with libata starting in 2003 and has been scheduled for removal for a while. Finally kill it off so that we can start cleaning up various bits of cruft it forced on the block layer. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe