Merge tag 'for-linus-4.17' of git://github.com/cminyard/linux-ipmi

Pull IPMI updates from Corey Minyard:
 "Mostly small changes, as usual.

  This does add an IPMI BMC server-side driver, to allow a Linux system
  to act as an IPMI controller. That's the biggest change, but it is
  just a new driver that is fairly narrow in use.

  The other largish change is removing ACPI SPMI probe support, which
  should have never really been there in the beginning"

* tag 'for-linus-4.17' of git://github.com/cminyard/linux-ipmi:
  ipmi/parisc: Add IPMI chassis poweroff for certain HP PA-RISC and IA-64 servers
  ipmi_ssif: Fix kernel panic at msg_done_handler
  ipmi:pci: Blacklist a Realtek "IPMI" device
  ipmi: Remove ACPI SPMI probing from the system interface driver
  ipmi: Remove ACPI SPMI probing from the SSIF (I2C) driver
  ipmi: missing error code in try_smi_init()
  ipmi: use ARRAY_SIZE for poweroff_functions array sizing calculation
  ipmi: Consolidate cleanup code
  ipmi: Remove some unnecessary initializations
  ipmi: Fix some error cleanup issues
  ipmi: Add or fix SPDX-License-Identifier in all files
  ipmi: Re-use existing macros for built-in properties
  ipmi:pci: Make the PCI defines consistent with normal Linux ones
  ipmi: kcs_bmc: coding-style fixes and use new poll type
  char/ipmi: add documentation for sysfs interface
  ipmi: kcs_bmc: mark expected switch fall-through in kcs_bmc_handle_data
  ipmi: add an Aspeed KCS IPMI BMC driver
  ipmi: add a KCS IPMI BMC driver

2 files changed, 263 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-devices-platform-ipmi b/Documentation/ABI/testing/sysfs-devices-platform-ipmi
new file mode 100644
index 000000000000..2a781e7513b7
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-platform-ipmi
@@ -0,0 +1,238 @@
+What:		/sys/devices/platform/ipmi_bmc.*/firmware_revision
+Date:		Mar, 2006
+KernelVersion:	v2.6.17
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+		(RO) The major and minor revision of the firmware.
+
+
+What:		/sys/devices/platform/ipmi_bmc.*/aux_firmware_revision
+Date:		Mar, 2006
+KernelVersion:	v2.6.17
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+		(RO) Holds additional information about the firmware revision,
+		such as boot block or internal data structure version numbers.
+		The meanings of the numbers are specific to the vendor
+		identified by Manufacturer ID.
+
+
+What:		/sys/devices/platform/ipmi_bmc.*/revision
+Date:		Mar, 2006
+KernelVersion:	v2.6.17
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+		(RO) Device revision. Useful for identifying if significant
+		hardware changes have been made to the implementation of the
+		management controller.
+
+
+What:		/sys/devices/platform/ipmi_bmc.*/provides_device_sdrs
+Date:		Mar, 2006
+KernelVersion:	v2.6.17
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+		(RO) Indicates whether device provides device sensor data
+		records (1) or not (0).
+
+
+What:		/sys/devices/platform/ipmi_bmc.*/device_id
+Date:		Mar, 2006
+KernelVersion:	v2.6.17
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+		(RO) Device id is specified by the manufacturer identified by
+		the Manufacturer ID field. This field allows controller specific
+		software to identify the unique application command, OEM
+		fields, and functionality that are provided by the controller
+
+
+What:		/sys/devices/platform/ipmi_bmc.*/additional_device_support
+Date:		Mar, 2006
+KernelVersion:	v2.6.17
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+		(RO) Lists the IPMI ‘logical device’ commands and functions
+		that the controller supports that are in addition to the
+		mandatory IPM and Application commands.
+
+
+What:		/sys/devices/platform/ipmi_bmc.*/ipmi_version
+Date:		Mar, 2006
+KernelVersion:	v2.6.17
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+		(RO) Displays the IPMI Command Specification Version.
+
+
+What:		/sys/devices/platform/ipmi_bmc.*/manufacturer_id
+Date:		Mar, 2006
+KernelVersion:	v2.6.17
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+		(RO) Identifies the manufacturer responsible for the
+		specification of functionality of the vendor (OEM)-specific
+		commands, codes, and interfaces used in the controller.
+
+
+What:		/sys/devices/platform/ipmi_bmc.*/product_id
+Date:		Mar, 2006
+KernelVersion:	v2.6.17
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+		(RO) Displays a number that identifies a particular system,
+		module, add-in card, or board set. The number is specified
+		according to the manufacturer given by Manufacturer ID.
+
+For detailed definitions of the above attributes, refer to section 20.1 'Get
+Device ID Command' of the IPMI specification v2.0.
+
+
+What:		/sys/devices/platform/ipmi_bmc.*/guid
+Date:		Mar, 2006
+KernelVersion:	v2.6.17
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+		(RO) A GUID (Globally Unique ID), also referred to as a UUID
+		(Universally Unique Identifier), for the management controller,
+		as described in section 20.8 'Get Device GUID Command' of the
+		IPMI specification v2.0.
+
+
+What:		/sys/devices/platform/ipmi_si.*/type
+Date:		Sep, 2017
+KernelVersion:	v4.15
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+		(RO) The device interface for IPMI "kcs", "smic", "bt" or
+		"invalid"
+
+What:		/sys/devices/platform/ipmi_si.*/idles
+What:		/sys/devices/platform/ipmi_si.*/watchdog_pretimeouts
+What:		/sys/devices/platform/ipmi_si.*/complete_transactions
+What:		/sys/devices/platform/ipmi_si.*/events
+What:		/sys/devices/platform/ipmi_si.*/interrupts
+What:		/sys/devices/platform/ipmi_si.*/hosed_count
+What:		/sys/devices/platform/ipmi_si.*/long_timeouts
+What:		/sys/devices/platform/ipmi_si.*/flag_fetches
+What:		/sys/devices/platform/ipmi_si.*/attentions
+What:		/sys/devices/platform/ipmi_si.*/incoming_messages
+What:		/sys/devices/platform/ipmi_si.*/short_timeouts
+Date:		Sep, 2017
+KernelVersion:	v4.15
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+
+		idles:			(RO) Number of times the interface was
+					idle while being polled.
+
+		watchdog_pretimeouts:	(RO) Number of watchdog pretimeouts.
+
+		complete_transactions:	(RO) Number of completed messages.
+
+		events:			(RO) Number of IPMI events received from
+					the hardware.
+
+		interrupts:		(RO) Number of interrupts the driver
+					handled.
+
+		hosed_count:		(RO) Number of times the hardware didn't
+					follow the state machine.
+
+		long_timeouts:		(RO) Number of times the driver
+					requested a timer while nothing was in
+					progress.
+
+		flag_fetches:		(RO) Number of times the driver
+					requested flags from the hardware.
+
+		attentions:		(RO) Number of time the driver got an
+					ATTN from the hardware.
+
+		incoming_messages:	(RO) Number of asynchronous messages
+					received.
+
+		short_timeouts:		(RO) Number of times the driver
+					requested a timer while an operation was
+					in progress.
+
+
+What:		/sys/devices/platform/ipmi_si.*/interrupts_enabled
+Date:		Sep, 2017
+KernelVersion:	v4.15
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+		(RO) Indicates whether interrupts are enabled or not. The driver
+		disables interrupts when it gets into a situation where it
+		cannot handle messages due to lack of memory. Once that
+		situation clears up, it will re-enable interrupts.
+
+
+What:		/sys/devices/platform/ipmi_si.*/params
+Date:		Sep, 2017
+KernelVersion:	v4.15
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+		[to be documented]
+
+
+What:		/sys/devices/platform/dmi-ipmi-ssif.*/type
+Date:		Sep, 2017
+KernelVersion:	v4.15
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+		(RO) Shows the IMPI device interface type - "ssif" here.
+
+
+What:		/sys/devices/platform/dmi-ipmi-ssif.*/hosed
+What:		/sys/devices/platform/dmi-ipmi-ssif.*/alerts
+What:		/sys/devices/platform/dmi-ipmi-ssif.*/sent_messages
+What:		/sys/devices/platform/dmi-ipmi-ssif.*/sent_messages_parts
+What:		/sys/devices/platform/dmi-ipmi-ssif.*/received_messages
+What:		/sys/devices/platform/dmi-ipmi-ssif.*/received_message_parts
+What:		/sys/devices/platform/dmi-ipmi-ssif.*/events
+What:		/sys/devices/platform/dmi-ipmi-ssif.*/watchdog_pretimeouts
+What:		/sys/devices/platform/dmi-ipmi-ssif.*/flag_fetches
+What:		/sys/devices/platform/dmi-ipmi-ssif.*/send_retries
+What:		/sys/devices/platform/dmi-ipmi-ssif.*/receive_retries
+What:		/sys/devices/platform/dmi-ipmi-ssif.*/send_errors
+What:		/sys/devices/platform/dmi-ipmi-ssif.*/receive_errors
+Date:		Sep, 2017
+KernelVersion:	v4.15
+Contact:	openipmi-developer@lists.sourceforge.net
+Description:
+		hosed:			(RO) Number of times the hardware didn't
+					follow the state machine.
+
+		alerts:			(RO) Number of alerts received.
+
+		sent_messages:		(RO) Number of total messages sent.
+
+		sent_message_parts:	(RO) Number of message parts sent.
+					Messages may be broken into parts if
+					they are long.
+
+		receieved_messages:	(RO) Number of message responses
+					received.
+
+		received_message_parts: (RO) Number of message fragments
+					received.
+
+		events:			(RO) Number of received events.
+
+		watchdog_pretimeouts:	(RO) Number of watchdog pretimeouts.
+
+		flag_fetches:		(RO) Number of times a flag fetch was
+					requested.
+
+		send_retries:		(RO) Number of time a message was
+					retried.
+
+		receive_retries:	(RO) Number of times the receive of a
+					message was retried.
+
+		send_errors:		(RO) Number of times the send of a
+					message failed.
+
+		receive_errors:		(RO) Number of errors in receiving
+					messages.
diff --git a/Documentation/devicetree/bindings/ipmi/aspeed-kcs-bmc.txt b/Documentation/devicetree/bindings/ipmi/aspeed-kcs-bmc.txt
new file mode 100644
index 000000000000..d98a9bf45d6c
--- /dev/null
+++ b/Documentation/devicetree/bindings/ipmi/aspeed-kcs-bmc.txt
@@ -0,0 +1,25 @@
+* Aspeed KCS (Keyboard Controller Style) IPMI interface
+
+The Aspeed SOCs (AST2400 and AST2500) are commonly used as BMCs
+(Baseboard Management Controllers) and the KCS interface can be
+used to perform in-band IPMI communication with their host.
+
+Required properties:
+- compatible : should be one of
+    "aspeed,ast2400-kcs-bmc"
+    "aspeed,ast2500-kcs-bmc"
+- interrupts : interrupt generated by the controller
+- kcs_chan : The LPC channel number in the controller
+- kcs_addr : The host CPU IO map address
+
+
+Example:
+
+    kcs3: kcs3@0 {
+        compatible = "aspeed,ast2500-kcs-bmc";
+        reg = <0x0 0x80>;
+        interrupts = <8>;
+        kcs_chan = <3>;
+        kcs_addr = <0xCA2>;
+        status = "okay";
+    };