Commit Graph

103 Commits

Author SHA1 Message Date
Eddie James
8919dfcb31 fsi: scom: Don't abort operations for minor errors
The scom driver currently fails out of operations if certain system
errors are flagged in the status register; system checkstop, special
attention, or recoverable error. These errors won't impact the ability
of the scom engine to perform operations, so the driver should continue
under these conditions.
Also, don't do a PIB reset for these conditions, since it won't help.

Fixes: 6b293258cd ("fsi: scom: Major overhaul")
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Cc: stable <stable@vger.kernel.org>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20190827041249.13381-1-jk@ozlabs.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-28 22:59:18 +02:00
Eddie James
7ce98fb6c5 fsi: sbefifo: Don't fail operations when in SBE IPL state
SBE fifo operations should be allowed while the SBE is in any of the
"IPL" states. Operations should succeed in this state.

Fixes: 9f4a8a2d7f fsi/sbefifo: Add driver for the SBE FIFO
Reviewed-by: Joel Stanley <joel@jms.id.au>
Tested-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/1561575415-3282-1-git-send-email-eajames@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-03 21:17:11 +02:00
Greg Kroah-Hartman
b9b667a0c7 FSI changes for 5.3
- Add MAINTAINERS entry. There is now a git tree and a mailing
  list/patchwork for collecting FSI patches
 
  - Bug fix for error driver registration error paths
 
  - Correction for the OCC hwmon driver to meet the spec
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Merge tag 'fsi-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/fsi into char-misc-next

Joel writes:

FSI changes for 5.3

 - Add MAINTAINERS entry. There is now a git tree and a mailing
 list/patchwork for collecting FSI patches

 - Bug fix for error driver registration error paths

 - Correction for the OCC hwmon driver to meet the spec

* tag 'fsi-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/fsi:
  fsi/core: Fix error paths on CFAM init
  OCC: FSI and hwmon: Add sequence numbering
  MAINTAINERS: Add FSI subsystem
2019-07-03 09:21:25 +02:00
Jeremy Kerr
371975b0b0 fsi/core: Fix error paths on CFAM init
Change d1dcd67825 re-worked the struct fsi_slave initialisation in
fsi_slave_init, but introduced a few inconsitencies: the slave->dev is
now registered through cdev_device_add, but we may kfree() the device
out from underneath the cdev registration. We may also leave an IDA
allocated.

This change fixes the error paths, so that we kfree() only before the
device is registered with the core code. We also move the smode write to
before we start creating proper devices, as it's the most likely to
fail. We also remove the IDA-allocated minor on error, and properly
clean up the of_node.

Fixes: d1dcd67825 ("fsi: Add cfam char devices")
Reported-by: Lei YU <mine260309@gmail.com>
Tested-by: John Wang <wangzqbj@inspur.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>
2019-07-03 10:42:53 +09:30
Eddie James
afd26118f0 OCC: FSI and hwmon: Add sequence numbering
Sequence numbering of the commands submitted to the OCC is required by
the OCC interface specification. Add sequence numbering and check for
the correct sequence number on the response.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Lei YU <mine260309@gmail.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
2019-07-03 10:41:22 +09:30
Greg Kroah-Hartman
8083f3d788 Merge 5.2-rc6 into char-misc-next
We need the char-misc fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-23 09:23:33 +02:00
Nishad Kamdar
7603eab4a5 fsi: cf-fsi-fw: Use the correct style for SPDX License Identifier
This patch corrects the SPDX License Identifier style
in header file related to Drivers for FRU Support Interface.
For C header files Documentation/process/license-rules.rst
mandates C-like comments (opposed to C source files where
C++ style should be used)

Changes made by using a script provided by Joe Perches here:
https://lkml.org/lkml/2019/2/7/46

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 19:35:51 +02:00
Thomas Gleixner
6b99076ced treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 469
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of mergchantability or
  fitness for a particular purpose see the gnu general public license
  for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 2 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Enrico Weigelt <info@metux.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081202.997941624@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:11 +02:00
Thomas Gleixner
1802d0beec treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 655 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:41 -07:00
Thomas Gleixner
ec8f24b7fa treewide: Add SPDX license identifier - Makefile/Kconfig
Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 10:50:46 +02:00
Thomas Gleixner
09c434b8a0 treewide: Add SPDX license identifier for more missed files
Add SPDX license identifiers to all files which:

 - Have no license information of any form

 - Have MODULE_LICENCE("GPL*") inside which was used in the initial
   scan/conversion to ignore the file

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 10:50:45 +02:00
Eddie James
7ed98dddb7 fsi: Add On-Chip Controller (OCC) driver
The OCC is a device embedded on a POWER processor that collects and
aggregates sensor data from the processor and system. The OCC can
provide the raw sensor data as well as perform thermal and power
management on the system.

This driver provides an atomic communications channel between a service
processor (e.g. a BMC) and the OCC. The driver is dependent on the FSI
SBEFIFO driver to get hardware access through the SBE to the OCC SRAM.
Commands are issued to the SBE to send or fetch data to the SRAM.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2018-12-02 16:25:28 -08:00
Brajeswar Ghosh
d20810530b fsi: fsi-scom.c: Remove duplicate header
Remove linux/cdev.h which is included more than once

Signed-off-by: Brajeswar Ghosh <brajeswar.linux@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-11-26 10:13:04 +11:00
Arnd Bergmann
64999fa7aa fsi: master-ast-cf: select GENERIC_ALLOCATOR
In randconfig builds without CONFIG_GENERIC_ALLOCATOR, this driver
fails to link:

ERROR: "gen_pool_alloc_algo" [drivers/fsi/fsi-master-ast-cf.ko] undefined!
ERROR: "gen_pool_fixed_alloc" [drivers/fsi/fsi-master-ast-cf.ko] undefined!
ERROR: "of_gen_pool_get" [drivers/fsi/fsi-master-ast-cf.ko] undefined!
ERROR: "gen_pool_free" [drivers/fsi/fsi-master-ast-cf.ko] undefined!

Select the dependency as all other users do.

Fixes: 6a794a27da ("fsi: master-ast-cf: Add new FSI master using Aspeed ColdFire")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-11-26 10:11:43 +11:00
David Howells
aa563d7bca iov_iter: Separate type from direction and use accessor functions
In the iov_iter struct, separate the iterator type from the iterator
direction and use accessor functions to access them in most places.

Convert a bunch of places to use switch-statements to access them rather
then chains of bitwise-AND statements.  This makes it easier to add further
iterator types.  Also, this can be more efficient as to implement a switch
of small contiguous integers, the compiler can use ~50% fewer compare
instructions than it has to use bitwise-and instructions.

Further, cease passing the iterator type into the iterator setup function.
The iterator function can set that itself.  Only the direction is required.

Signed-off-by: David Howells <dhowells@redhat.com>
2018-10-24 00:41:07 +01:00
Benjamin Herrenschmidt
15e2a7218c fsi: sbefifo: Bump max command length
Otherwise cronus putmem fails istep and BML fails to upload skiboot

To do that, we still use our one-page command buffer for small commands
for speed, and for anything bigger, with a limit of 1MB plus a page,
we vmalloc a temporary buffer.

The limit was chosen because Cronus will break up any data transfer
into 1M chunks (the extra page is for the command header).

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
2018-08-08 15:44:47 +10:00
Benjamin Herrenschmidt
aa1221b258 fsi: scom: Fix NULL dereference
The chardev conversion forgot to copy the fsi_dev,
silly mistake, compounded by a testing mistake on
my side, this specific driver wasn't being tested
properly.

Fixes: d8f4587655 "fsi: scom: Convert to use the new chardev"
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-08-06 12:27:04 +10:00
Benjamin Herrenschmidt
9840fcd8cc fsi: Prevent multiple concurrent rescans
The bus scanning process isn't terribly good at parallel attempts
at rescanning the same bus. Let's have a per-master mutex protecting
the scanning process.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-07-27 09:58:12 +10:00
Benjamin Herrenschmidt
d1dcd67825 fsi: Add cfam char devices
This aims to deprecate the "raw" sysfs file used for directly
accessing the CFAM and instead use a char device like the
other sub drivers.

Since it reworks the slave creation code and adds a cfam device
type, we also use the opportunity to convert the attributes
to attribute groups and add a couple more.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-07-27 09:58:05 +10:00
Benjamin Herrenschmidt
d8f4587655 fsi: scom: Convert to use the new chardev
This converts FSI scom to use the new fsi-core controlled
chardev allocator and use a real cdev instead of a miscdev.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-07-27 09:57:55 +10:00
Benjamin Herrenschmidt
8b052dd64f fsi: sbefifo: Convert to use the new chardev
This converts FSI sbefifo to use the new fsi-core controlled
chardev allocator and use a real cdev instead of a miscdev.

One side effect is to fix the object lifetime by removing
the use of devm_kzalloc() for something that contains kobjects,
and using proper reference counting.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-07-27 09:57:31 +10:00
Benjamin Herrenschmidt
0ab5fe5374 fsi: Add new central chardev support
The various FSI devices (sbefifo, occ, scom, more to come)
currently use misc devices.

This is problematic as the minor device space for misc is
limited and there can be a lot of them. Also it limits our
ability to move them to a dedicated /dev/fsi directory or
to be smart about device naming and numbering.

It also means we have IDAs on every single of these drivers

This creates a common fsi "device_type" for the optional
/dev/fsi grouping and a dev_t allocator for all FSI devices.

"Legacy" devices get to use a backward compatible numbering
scheme (as long as chip id <16 and there's only one copy
of a given unit type per chip).

A single major number and a single IDA are shared for all
FSI devices.

This doesn't convert the FSI device drivers to use the new
scheme yet, they will be converted individually.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-07-27 09:57:23 +10:00
Benjamin Herrenschmidt
537052df22 fsi: master-ast-cf: Rename dump_trace() to avoid name collision
s390 defines a global dump_trace() symbol. Rename ours to
dump_ucode_trace() to avoid a collision in build tests.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-07-26 14:49:50 +10:00
Gustavo A. R. Silva
502defbb47 fsi: master-ast-cf: Fix memory leak
In case memory resources for *fw* were allocated, release them
before return.

Addresses-Coverity-ID: 1472044 ("Resource leak")
Fixes: 6a794a27da ("fsi: master-ast-cf: Add new FSI master using Aspeed ColdFire")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-07-26 09:56:17 +10:00
Benjamin Herrenschmidt
375cac7010 fsi: master-ast-cf: Mask unused bits in RTAG/RCRC
Then reading the RTAG/RCRC "registers" from the coprocessor after
a command is complete, mask out the top bits, only keep the relevant
bits. Microcode v5 will leave garbage in those top bits as a
result of a performance optimization.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
2018-07-25 16:04:53 +10:00
Benjamin Herrenschmidt
d0cff240b8 fsi: master-ast-cf: Fix build warnings on 64-bit platforms
A couple of places forgot the 'z' qualifier for dev_dbg
when printing a size_t

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-07-24 16:35:03 +10:00
Benjamin Herrenschmidt
0a213777d1 fsi: Add support for device-tree provided chip IDs
They get retrieved from the device-tree and exposed
as an attribute in sysfs

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-07-23 16:27:32 +10:00
Benjamin Herrenschmidt
4fcdc2d1b0 fsi: sbefifo: Fix inconsistent use of ffdc mutex
Some of the exit path missed the unlock. Move the mutex to
an outer function to avoid the problem completely

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-07-23 16:27:32 +10:00
Benjamin Herrenschmidt
6a794a27da fsi: master-ast-cf: Add new FSI master using Aspeed ColdFire
The Aspeed AST2x00 can contain a ColdFire v1 coprocessor which
is currently unused on OpenPower systems.

This adds an alternative to the fsi-master-gpio driver that
uses that coprocessor instead of bit banging from the ARM
core itself. The end result is about 4 times faster.

The firmware for the coprocessor and its source code can be
found at https://github.com/ozbenh/cf-fsi and is system specific.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-07-23 15:22:52 +10:00
Benjamin Herrenschmidt
fea9cf321c fsi: Move various master definitions to a common header
This moves the definitions for various protocol details
(message & response codes, delays etc...) out of
fsi-master-gpio.c to fsi-master.h in order to share them
with other master implementations.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
2018-07-12 12:06:02 +10:00
Benjamin Herrenschmidt
8ef9ccf810 fsi: master-gpio: Add missing release function
The embedded struct device needs a release function to be
able to successfully remove the driver.

We remove the devm_gpiod_put() as they are unnecessary
(the resources will be released automatically) and because
fsi_master_unregister() will cause the master structure to
be freed.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
2018-07-12 12:05:22 +10:00
Benjamin Herrenschmidt
265aac26bc fsi: Don't use device_unregister() in fsi_master_register()
In the error path of fsi_master_register(), we currently
use device_unregister(). This will cause the last reference
to the structure to be dropped, thus freeing the enclosing
structure, which isn't what the callers want.

Use device_del() instead so that we return to the caller
with a refcount of 1. The caller can then assume that it
must use put_device() after a call to fsi_master_register()
regardless of whether the latter suceeded or failed.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-07-12 12:05:11 +10:00
Benjamin Herrenschmidt
55382d301f fsi: master-gpio: Remove "GPIO" prefix on some definitions
Some definitions are generic to the FSI protocol or any
give master implementation. Rename them to remove the
"GPIO" prefix in preparation for moving them to a common
header.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>

# Conflicts:
#	drivers/fsi/fsi-master-gpio.c
2018-07-12 12:04:24 +10:00
Benjamin Herrenschmidt
8b2e475113 fsi: master-gpio: Remove unused definitions
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
2018-07-12 12:02:59 +10:00
Benjamin Herrenschmidt
777fd524ba fsi: master-gpio: Add more tracepoints
This adds a few more tracepoints that have proven useful when
debugging issues with the FSI bus.

This also makes echo_delay() use clock_zeros() instead of
open-code it in order to share the tracepoint.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
2018-07-12 12:02:31 +10:00
Benjamin Herrenschmidt
75854c148f fsi: master-gpio: Add support for link_config
To configure the send and echo delays

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
2018-07-12 12:00:11 +10:00
Benjamin Herrenschmidt
edc2485148 fsi: master-gpio: Rename and adjust send delay
What the driver called "FSI_GPIO_PRIME_SLAVE_CLOCKS" is what
the FSI spec calls tSendDelay and should be 16 clocks by
default.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
2018-07-12 11:59:48 +10:00
Benjamin Herrenschmidt
a2e7da86cc fsi: Add mechanism to set the tSendDelay and tEchoDelay values
Those values control the amount of "dummy" clocks between commands and
between a command and its response.

This adds a way to configure them from sysfs (to be later extended to
defaults in the device-tree). The default remains 16 (the HW default).

This is only supported if the backend supports the new link_config()
callback to configure the generation of those delays.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
---
2018-07-12 11:59:13 +10:00
Benjamin Herrenschmidt
935f963638 fsi: Move code around to avoid forward declaration
Move fsi_slave_set_smode() and its helpers to before it's
first user and remove the corresponding forward declaration.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
2018-07-12 11:58:25 +10:00
Benjamin Herrenschmidt
d5c66e61e7 fsi: sbefifo: Fix checker warning about late NULL check
"dev" is dereferences before it's checked.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-07-12 11:53:37 +10:00
Guenter Roeck
32f7f89d30 fsi/sbefifo: Add dependency on OF_ADDRESS
The driver calls of_platform_device_create() which is only available
if OF_ADDRESS is enabled. When building sparc64 images, this results
in

ERROR: "of_platform_device_create" [drivers/fsi/fsi-sbefifo.ko] undefined!

Fixes: 9f4a8a2d7f ("fsi/sbefifo: Add driver for the SBE FIFO")
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-07-12 11:51:19 +10:00
Eddie James
c00bac8876 fsi: sbefifo: Add missing mutex_unlock
There was no unlock of the FFDC mutex.

Fixes: 9f4a8a2d7f ("fsi/sbefifo: Add driver for the SBE FIFO")
Signed-off-by: Eddie James <eajames@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-07-12 11:51:12 +10:00
Benjamin Herrenschmidt
6b293258cd fsi: scom: Major overhaul
This was too hard to split ... this adds a number of features
to the SCOM user interface:

 - Support for indirect SCOMs

 - read()/write() interface now handle errors and retries

 - New ioctl() "raw" interface for use by debuggers

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Eddie James <eajames@linux.vnet.ibm.com>
Reviewed-by: Alistair Popple <alistair@popple.id.au>
2018-06-18 15:11:53 +10:00
Benjamin Herrenschmidt
f143304442 fsi: scom: Add register definitions
Add a few more register and bit definitions, also define and use
SCOM_READ_CMD (which is 0 but it makes the code clearer)

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Eddie James <eajames@linux.vnet.ibm.com>
2018-06-18 14:33:56 +10:00
Benjamin Herrenschmidt
5a3c2f7656 fsi: scom: Fixup endian annotations
Use the proper annotated type __be32 and fixup the
accessor used for get_scom()

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Eddie James <eajames@linux.vnet.ibm.com>
2018-06-18 14:33:56 +10:00
Benjamin Herrenschmidt
bd21336457 fsi: scom: Whitespace fixes
No functional changes

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Eddie James <eajames@linux.vnet.ibm.com>
2018-06-18 14:33:56 +10:00
Benjamin Herrenschmidt
162c394673 fsi: scom: Add mutex around FSI2PIB accesses
Otherwise, multiple clients can open the driver and attempt
to access the PIB at the same time, thus clobbering each other
in the process.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Eddie James <eajames@linux.vnet.ibm.com>
2018-06-18 14:33:56 +10:00
Joel Stanley
11454d6dc8 fsi: core: Fix sparse warnings
fsi-core.c:210:9: warning: cast to restricted __be32
fsi-core.c:210:9: warning: cast to restricted __be32
fsi-core.c:210:9: warning: cast to restricted __be32
fsi-core.c:210:9: warning: cast to restricted __be32
fsi-core.c:210:9: warning: cast to restricted __be32
fsi-core.c:210:9: warning: cast to restricted __be32
fsi-core.c:210:9: warning: cast to restricted __be32
fsi-core.c:210:9: warning: cast to restricted __be32
fsi-core.c:210:9: warning: cast to restricted __be32
fsi-core.c:210:9: warning: cast to restricted __be32
fsi-core.c:210:9: warning: cast to restricted __be32
fsi-core.c:210:9: warning: cast to restricted __be32
fsi-core.c:606:15: warning: incorrect type in assignment (different base types)
fsi-core.c:606:15:    expected unsigned int [unsigned] [assigned] [usertype] smode
fsi-core.c:606:15:    got restricted __be32 [usertype] <noident>
fsi-core.c:492:28: warning: expression using sizeof(void)
fsi-core.c:520:29: warning: expression using sizeof(void)
fsi-core.c:682:19: warning: cast to restricted __be32
fsi-core.c:682:19: warning: cast to restricted __be32
fsi-core.c:682:19: warning: cast to restricted __be32
fsi-core.c:682:19: warning: cast to restricted __be32
fsi-core.c:682:19: warning: cast to restricted __be32
fsi-core.c:682:19: warning: cast to restricted __be32
fsi-core.c:706:24: warning: incorrect type in assignment (different base types)
fsi-core.c:706:24:    expected unsigned int [unsigned] [usertype] llmode
fsi-core.c:706:24:    got restricted __be32 [usertype] <noident>

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-06-18 14:33:56 +10:00
Joel Stanley
fbdb5eac5c fsi: master-hub: Fix sparse warnings
fsi-master-hub.c:128:13: warning: incorrect type in assignment (different base types)
fsi-master-hub.c:128:13:    expected unsigned int [unsigned] [usertype] cmd
fsi-master-hub.c:128:13:    got restricted __be32 [usertype] <noident>
fsi-master-hub.c:208:13: warning: incorrect type in assignment (different base types)
fsi-master-hub.c:208:13:    expected restricted __be32 [addressable] [assigned] [usertype] reg
fsi-master-hub.c:208:13:    got int

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-06-18 14:33:56 +10:00
Joel Stanley
2992513877 fsi: sbefifo: Fix sparse warnings
fsi-sbefifo.c:547:58: warning: incorrect type in argument 2 (different base types)
fsi-sbefifo.c:547:58:    expected restricted __be32 [usertype] *word
fsi-sbefifo.c:547:58:    got unsigned int *<noident>
fsi-sbefifo.c:635:16: warning: incorrect type in assignment (different base types)
fsi-sbefifo.c:635:16:    expected unsigned int [unsigned] <noident>
fsi-sbefifo.c:635:16:    got restricted __be32 [usertype] <noident>
fsi-sbefifo.c:636:16: warning: incorrect type in assignment (different base types)
fsi-sbefifo.c:636:16:    expected unsigned int [unsigned] <noident>
fsi-sbefifo.c:636:16:    got restricted __be32 [usertype] <noident>

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-06-18 14:33:56 +10:00