This driver exposes the Keyboard Controller Style (KCS) interface on
Novoton NPCM7xx SoCs as a character device. Such SOCs are commonly used
as a BaseBoard Management Controller (BMC) on a server board, and KCS
interface is commonly used to perform the in-band IPMI communication
between the server and its BMC.
Signed-off-by: Avi Fishman <avifishman70@gmail.com>
Signed-off-by: Haiyue Wang <haiyue.wang@linux.intel.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Signed-off-by: Corey Minyard <cminyard@mvista.com>

There is already an intf_num in the main IPMI device structure, use
a different name in the ipmi_si code to avoid confusion.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Due to changes in the way shutdown is done, it is no longer
required to check that the interface is set.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Signed-off-by: Corey Minyard <cminyard@mvista.com>

Convert over to struct ipmi_user * and struct ipmi_smi *.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Signed-off-by: Corey Minyard <cminyard@mvista.com>

Signed-off-by: Corey Minyard <cminyard@mvista.com>

All the users are now gone.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Now that we can handle hot remove there is no need for usecounts
for interfaces.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Now that the interfaces have shutdown handlers, this no longer
needs to be conditional.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Move the shutdown handling to a shutdown function called from
the IPMI core code.  That makes for a cleaner shutdown.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Move the shutdown handling to a shutdown function called from
the IPMI core code.  That makes for a cleaner shutdown.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

To handle hot remove of interfaces, a lot of rework had to be
done to the locking.  Several things were switched over to srcu
and shutdown for users and interfaces was added for cleaner
shutdown.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Counters would not be pegged properly on some errors.  Have
deliver_response() return an error so the counters can be
incremented properly.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Get rid of this coding style violation in the user files.  Include
files will come later.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Get rid of that non-compliance in the user files.  Include files
will come later.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Since things that IPMI uses can be hot-swapped, the users and
interfaces really need to be able to handle this.

Add the functions so the users and interfaces can implement
them, the actual function will be added after everything is
ready.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

The mutex didn't really serve any useful purpose, from what I can
tell, and it would just get in the way.  So remove it.

Removing that required a mutex around the default value setting and
getting, so just use the receive mutex for that.

Also pull the fasync stuff outside of the lock for adding the data
to the queue, since it didn't need to be there.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Signed-off-by: Corey Minyard <cminyard@mvista.com>

It was huge, and easily broken into pieces.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Make the comments correct and consistent.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Signed-off-by: Corey Minyard <cminyard@mvista.com>

Replace ifdefs in the code with a simple function.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

This is a cleaner interface and the main IPMI panic handler does setup
required by the watchdog handler.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Users of the IPMI code had their own panic handlers, but the
order was not necessarily right, the base IPMI code would
need to handle the panic first, and the user had no way to
know if the IPMI interface could run at panic time.

Add a panic handler to the user interface, it is called if
non-NULL and the interface the user is on is capable of panic
handling.  It also cleans up the panic log handling a bit to
reuse the existing interface loop in the main panic handler.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

And clean broken strings.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Simplify things by creating one set of message handling data for
setting the watchdog and doing a heartbeat.  Rework the locking
to avoid some (probably not very important) races and to avoid
a fairly unlikely infinite recursion.

Get rid of ipmi_ignore_heartbeat, it wasn't used, and use
watchdog_user to tell if we have a working IPMI device below
us.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

If you send a command to another BMC that might take some extra
time, increase the timeouts temporarily.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

By default the retry timeout is 1 second.  Allow that to be modified,
primarily for slow operations, like firmware writes.

Also, the timeout was driven by a 1 second timer, so 1 second really
meant between 0 and 1 second.  Set the default to 2 seconds so it
means between 1 and 2 seconds.

Also allow the time the interface automatically stays in mainenance
mode to be modified from it's default 30 seconds.

Also consolidate some of the timeout and retry setup.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

more

Pull parisc build fix from Helge Deller:
 "Fix build error because of missing binfmt_elf32.o file which is still
  mentioned in the Makefile"

* 'parisc-4.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Fix missing binfmt_elf32.o build error

Pull missed timer updates from Thomas Gleixner:
 "This is a branch which got forgotten during the merge window, but it
  contains only fixes and hardware enablement. No fundamental changes.

   - Various fixes for the imx-tpm clocksource driver

   - A new timer driver for the NCPM7xx SoC family"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource/drivers/imx-tpm: Add different counter width support
  clocksource/drivers/imx-tpm: Correct some registers operation flow
  clocksource/drivers/imx-tpm: Fix typo of clock name
  dt-bindings: timer: tpm: fix typo of clock name
  clocksource/drivers/npcm: Add NPCM7xx timer driver
  dt-binding: timer: document NPCM7xx timer DT bindings

Pull kvm fixes from Paolo Bonzini:
 "Bug fixes, plus a new test case and the associated infrastructure for
  writing nested virtualization tests"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm: selftests: add vmx_tsc_adjust_test
  kvm: x86: move MSR_IA32_TSC handling to x86.c
  X86/KVM: Properly update 'tsc_offset' to represent the running guest
  kvm: selftests: add -std=gnu99 cflags
  x86: Add check for APIC access address for vmentry of L2 guests
  KVM: X86: fix incorrect reference of trace_kvm_pi_irte_update
  X86/KVM: Do not allow DISABLE_EXITS_MWAIT when LAPIC ARAT is not available
  kvm: selftests: fix spelling mistake: "divisable" and "divisible"
  X86/VMX: Disable VMX preemption timer if MWAIT is not intercepted

The |= operator will let us end up with an invalid PTE. Use
the correct &= instead.

[ The bug was also independently reported by Shuah Khan ]

Fixes: fb43d6cb ('x86/mm: Do not auto-massage page protections')
Acked-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

The test checks the behavior of setting MSR_IA32_TSC in a nested guest,
and the TSC_OFFSET VMCS field in general.  It also introduces the testing
infrastructure for Intel nested virtualization.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

This is not specific to Intel/AMD anymore.  The TSC offset is available
in vcpu->arch.tsc_offset.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Update 'tsc_offset' on vmentry/vmexit of L2 guests to ensure that it always
captures the TSC_OFFSET of the running guest whether it is the L1 or L2
guest.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Jim Mattson <jmattson@google.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de>
[AMD changes, fix update_ia32_tsc_adjust_msr. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Pull more btrfs updates from David Sterba:
 "We have queued a few more fixes (error handling, log replay,
  softlockup) and the rest is SPDX updates that touche almost all files
  so the diffstat is long"

* tag 'for-4.17-part2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: Only check first key for committed tree blocks
  btrfs: add SPDX header to Kconfig
  btrfs: replace GPL boilerplate by SPDX -- sources
  btrfs: replace GPL boilerplate by SPDX -- headers
  Btrfs: fix loss of prealloc extents past i_size after fsync log replay
  Btrfs: clean up resources during umount after trans is aborted
  btrfs: Fix possible softlock on single core machines
  Btrfs: bail out on error during replay_dir_deletes
  Btrfs: fix NULL pointer dereference in log_dir_items

Pull cifs fixes from Steve French:
 "SMB3 fixes, a few for stable, and some important cleanup work from
  Ronnie of the smb3 transport code"

* tag '4.17-rc1SMB3-Fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: change validate_buf to validate_iov
  cifs: remove rfc1002 hardcoded constants from cifs_discard_remaining_data()
  cifs: Change SMB2_open to return an iov for the error parameter
  cifs: add resp_buf_size to the mid_q_entry structure
  smb3.11: replace a 4 with server->vals->header_preamble_size
  cifs: replace a 4 with server->vals->header_preamble_size
  cifs: add pdu_size to the TCP_Server_Info structure
  SMB311: Improve checking of negotiate security contexts
  SMB3: Fix length checking of SMB3.11 negotiate request
  CIFS: add ONCE flag for cifs_dbg type
  cifs: Use ULL suffix for 64-bit constant
  SMB3: Log at least once if tree connect fails during reconnect
  cifs: smb2pdu: Fix potential NULL pointer dereference