ipmi_si: Rework some include files

ipmi_si_sm.h was getting included in lots of places it didn't
belong. Rework things a bit to remove all the dependencies,
mostly just moving things between include files that were in
the wrong place and removing bogus includes.

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

ipmi: Add the i2c-addr property for SSIF interfaces

This is required for SSIF to work.

There was no way to know if the interface being added was SI
or SSIF from the platform data, but that was required so the
i2c-addr is only added for SSIF interfaces. So add a field
for that.

Also rework the logic a bit so that ipmi-type is not set
for SSIF interfaces, as it is not necessary for that.

Fixes: 3cd83bac481d ("ipmi: Consolidate the adding of platform devices")
Reported-by: Kamlakant Patel <kamlakantp@marvell.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: stable@vger.kernel.org # 5.1

ipmi: Fix failure on SMBIOS specified devices

An extra memset was put into a place that cleared the interface
type.

Reported-by: Tony Camuso <tcamuso@redhat.com>
Fixes: 3cd83bac481dc4 ("ipmi: Consolidate the adding of platform devices")
Signed-off-by: Corey Minyard <cminyard@mvista.com>

ipmi: Consolidate the adding of platform devices

It was being done in two different places now that hard-coded devices
use platform devices, and it's about to be three with hotmod switching
to platform devices. So put the code in one place.

This required some rework on some interfaces to make the type space
clean.

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

ipmi: Remove platform driver overrides and use the id_table

The IPMI DMI code was adding platform overrides, which is not
really an ideal solution. Switch to using the id_table in
the drivers to identify the devices.

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

ipmi:dmi: Ignore IPMI SMBIOS entries with a zero base address

Looking at logs from systems all over the place, it looks like tons
of broken systems exist that set the base address to zero. I can
only guess that is some sort of non-standard idea to mark the
interface as not being present. It can't be zero, anyway, so just
complain and ignore it.

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

ipmi:dmi: Use pr_fmt in the IPMI DMI code

It make things a little neater and saves some memory.

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

ipmi: Add or fix SPDX-License-Identifier in all files

And get rid of the license text that is no longer necessary.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Alistair Popple <alistair@popple.id.au>
Cc: Jeremy Kerr <jk@ozlabs.org>
Cc: Joel Stanley <joel@jms.id.au>
Cc: Rocky Craig <rocky.craig@hp.com>

ipmi: Re-use existing macros for built-in properties

Replace home grown set_prop_entry() macro by generic
PROPERTY_ENTRY_INTEGER()-like ones.

Cc: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>

ipmi: use dynamic memory for DMI driver override

Currently a crash can be seen if we reach the "err"
label in dmi_add_platform_ipmi(), calling
platform_device_put(), like here:
[ 7.270584] (null): ipmi:dmi: Unable to add resources: -16
[ 7.330229] ------------[ cut here ]------------
[ 7.334889] kernel BUG at mm/slub.c:3894!
[ 7.338936] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[ 7.344475] Modules linked in:
[ 7.347556] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.15.0-rc2-00004-gbe9cb7b-dirty #114
[ 7.355907] Hardware name: Huawei Taishan 2280 /D05, BIOS Hisilicon D05 IT17 Nemo 2.0 RC0 11/29/2017
[ 7.365137] task: 00000000c211f6d3 task.stack: 00000000f276e9af
[ 7.371116] pstate: 60000005 (nZCv daif -PAN -UAO)
[ 7.375957] pc : kfree+0x194/0x1b4
[ 7.379389] lr : platform_device_release+0xcc/0xd8
[ 7.384225] sp : ffff0000092dba90
[ 7.387567] x29: ffff0000092dba90 x28: ffff000008a83000
[ 7.392933] x27: ffff0000092dbc10 x26: 00000000000000e6
[ 7.398297] x25: 0000000000000003 x24: ffff0000085b51e8
[ 7.403662] x23: 0000000000000100 x22: ffff7e0000234cc0
[ 7.409027] x21: ffff000008af3660 x20: ffff8017d21acc10
[ 7.414392] x19: ffff8017d21acc00 x18: 0000000000000002
[ 7.419757] x17: 0000000000000001 x16: 0000000000000008
[ 7.425121] x15: 0000000000000001 x14: 6666666678303d65
[ 7.430486] x13: 6469727265766f5f x12: 7265766972642e76
[ 7.435850] x11: 6564703e2d617020 x10: 6530326435373638
[ 7.441215] x9 : 3030303030303030 x8 : 3d76656420657361
[ 7.446580] x7 : ffff000008f59df8 x6 : ffff8017fbe0ea50
[ 7.451945] x5 : 0000000000000000 x4 : 0000000000000000
[ 7.457309] x3 : ffffffffffffffff x2 : 0000000000000000
[ 7.462674] x1 : 0fffc00000000800 x0 : ffff7e0000234ce0
[ 7.468039] Process swapper/0 (pid: 1, stack limit = 0x00000000f276e9af)
[ 7.474809] Call trace:
[ 7.477272] kfree+0x194/0x1b4
[ 7.480351] platform_device_release+0xcc/0xd8
[ 7.484837] device_release+0x34/0x90
[ 7.488531] kobject_put+0x70/0xcc
[ 7.491961] put_device+0x14/0x1c
[ 7.495304] platform_device_put+0x14/0x1c
[ 7.499439] dmi_add_platform_ipmi+0x348/0x3ac
[ 7.503923] scan_for_dmi_ipmi+0xfc/0x10c
[ 7.507970] do_one_initcall+0x38/0x124
[ 7.511840] kernel_init_freeable+0x188/0x228
[ 7.516238] kernel_init+0x10/0x100
[ 7.519756] ret_from_fork+0x10/0x18
[ 7.523362] Code: f94002c0 37780080 f94012c0 37000040 (d4210000)
[ 7.529552] ---[ end trace 11750e4787deef9e ]---
[ 7.534228] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[ 7.534228]

This is because when the device is released in
platform_device_release(), we try to free
pdev.driver_override. This is a const string, hence
the crash.
Fix by using dynamic memory for pdev->driver_override.

Signed-off-by: John Garry <john.garry@huawei.com>
[Removed the free of driver_override from ipmi_si_remove_by_dev(). The
free is done in platform_device_release(), and would result in a double
free, and ipmi_si_remove_by_dev() is called by non-platform devices.]
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: <stable@vger.kernel.org> # 4.14+

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.

For non */uapi/* files that summary was:

SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139

and resulted in the first patch in this series.

If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:

SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930

and resulted in the second patch in this series.

- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:

SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1

and that resulted in the third patch in this series.

- when the two scanners agreed on the detected license(s), that became
the concluded license(s).

- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.

- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).

- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.

- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct

This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

ipmi: pr_err() strings should end with newlines

pr_err() messages should terminated with a new-line to avoid
other messages being concatenated onto the end.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>

ipmi: Make the DMI probe into a generic platform probe

Rework the DMI probe function to be a generic platform probe, and
then rework the DMI code (and a few other things) to use the more
generic information. This is so other things can declare platform
IPMI devices.

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

ipmi: Create a platform device for a DMI-specified IPMI interface

Create a platform device for each IPMI device in the DMI table,
a separate kind of device for SSIF types and for KCS, BT, and
SMIC types. This is so auto-loading IPMI devices will work
from just SMBIOS tables.

This also adds the ability to extract the slave address from
the SMBIOS tables, so that when the driver uses ACPI-specified
interfaces, it can still extract the slave address from SMBIOS.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: Andy Lutomirski <luto@kernel.org>