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17 commits

Author SHA1 Message Date
Ingo Molnar
693bf0aa01 x86/boot: Fix memremap() related build failure
The following commit:

  5997efb967 ("x86/boot: Use memremap() to map the MPF and MPC data")

causes new build failures on certain randconfigs:

  drivers/sfi/sfi_core.c: In function ‘sfi_map_memory’:
  drivers/sfi/sfi_core.c:104:10: error: implicit declaration of function ‘memremap’ [-Werror=implicit-function-declaration]
  drivers/sfi/sfi_core.c:104:31: error: ‘MEMREMAP_WB’ undeclared (first use in this function)

This is a case of parasitic header dependencies: the sfi_core.c file indirectly
includes <linux/io.h> for typical - but not all configs.

Including <linux/io.h> explicitly solves the build failure.

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: arnd@arndb.de
Cc: aryabinin@virtuozzo.com
Cc: bp@alien8.de
Cc: bp@suse.de
Cc: brijesh.singh@amd.com
Cc: corbet@lwn.net
Cc: dvyukov@google.com
Cc: dyoung@redhat.com
Cc: glider@google.com
Cc: konrad.wilk@oracle.com
Cc: linux-tip-commits@vger.kernel.org
Cc: luto@kernel.org
Cc: lwoodman@redhat.com
Cc: matt@codeblueprint.co.uk
Cc: mst@redhat.com
Cc: pbonzini@redhat.com
Cc: riel@redhat.com
Cc: rkrcmar@redhat.com
Cc: thomas.lendacky@amd.com
Cc: toshi.kani@hpe.com
Link: http://lkml.kernel.org/r/20170720092307.6xslahuaclmsiffe@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-07-20 11:37:58 +02:00
Tom Lendacky
f7750a7956 x86, mpparse, x86/acpi, x86/PCI, x86/dmi, SFI: Use memremap() for RAM mappings
The ioremap() function is intended for mapping MMIO. For RAM, the
memremap() function should be used. Convert calls from ioremap() to
memremap() when re-mapping RAM.

This will be used later by SME to control how the encryption mask is
applied to memory mappings, with certain memory locations being mapped
decrypted vs encrypted.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Larry Woodman <lwoodman@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Toshimitsu Kani <toshi.kani@hpe.com>
Cc: kasan-dev@googlegroups.com
Cc: kvm@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Cc: linux-efi@vger.kernel.org
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/b13fccb9abbd547a7eef7b1fdfc223431b211c88.1500319216.git.thomas.lendacky@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-07-18 11:37:58 +02:00
Andy Shevchenko
108cc2e7d2 SFI: fix compiler warnings
drivers/sfi/sfi_core.c:164:26: warning: no previous prototype for ‘sfi_map_table’ [-Wmissing-prototypes]
drivers/sfi/sfi_core.c:192:6: warning: no previous prototype for ‘sfi_unmap_table’ [-Wmissing-prototypes]

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2014-12-03 18:49:20 -05:00
Lv Zheng
c099eacbca SFI / ACPI: Fix warnings reported during builds with W=1
The following warnings can be seen in W=1 builds, because the original
sfi_acpi.[ch] header inclusions are incorrect:

include/linux/sfi_acpi.h:72:2: error: implicit declaration of function 'acpi_table_parse' [-Werror=implicit-function-declaration]
drivers/sfi/sfi_acpi.c:154:5: warning: no previous prototype for 'sfi_acpi_table_parse' [-Wmissing-prototypes]

Fix linux/sfi_acpi.h and modify drivers/sfi/sfi_acpi.c accordingly.

Reported-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
[rjw: Subject and changelog]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-12-07 01:24:33 +01:00
Lv Zheng
8b48463f89 ACPI: Clean up inclusions of ACPI header files
Replace direct inclusions of <acpi/acpi.h>, <acpi/acpi_bus.h> and
<acpi/acpi_drivers.h>, which are incorrect, with <linux/acpi.h>
inclusions and remove some inclusions of those files that aren't
necessary.

First of all, <acpi/acpi.h>, <acpi/acpi_bus.h> and <acpi/acpi_drivers.h>
should not be included directly from any files that are built for
CONFIG_ACPI unset, because that generally leads to build warnings about
undefined symbols in !CONFIG_ACPI builds.  For CONFIG_ACPI set,
<linux/acpi.h> includes those files and for CONFIG_ACPI unset it
provides stub ACPI symbols to be used in that case.

Second, there are ordering dependencies between those files that always
have to be met.  Namely, it is required that <acpi/acpi_bus.h> be included
prior to <acpi/acpi_drivers.h> so that the acpi_pci_root declarations the
latter depends on are always there.  And <acpi/acpi.h> which provides
basic ACPICA type declarations should always be included prior to any other
ACPI headers in CONFIG_ACPI builds.  That also is taken care of including
<linux/acpi.h> as appropriate.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com> (drivers/pci stuff)
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> (Xen stuff)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-12-07 01:03:14 +01:00
Randy Dunlap
d2185c4440 drivers/sfi: sfi_acpi.c needs sysfs.h
sfi_acpi.c needs to include linux/sysfs.h for data types.

drivers/sfi/sfi_core.h:66: error: field 'attr' has incomplete type
drivers/sfi/sfi_acpi.c:179: warning: 'struct kobject' declared inside parameter list
drivers/sfi/sfi_acpi.c:179: warning: its scope is only this definition or declaration, which is probably not what you want
drivers/sfi/sfi_acpi.c:182: warning: type defaults to 'int' in declaration of '__mptr'
drivers/sfi/sfi_acpi.c:182: warning: initialization from incompatible pointer type

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:31:57 -04:00
Lucas De Marchi
25985edced Fix common misspellings
Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-31 11:26:23 -03:00
Len Brown
5b026c4e3a SFI: use ioremap_cache() instead of ioremap()
We copied ACPI's oversight of using ioremap() and creating
non-cached table mappings when we should have been using
ioremap_cache().

Signed-off-by: Len Brown <len.brown@intel.com>
2011-01-11 23:27:25 -05:00
Dan Carpenter
e29df91e67 SFI: do not return freed pointer
We never actually use the return value of sfi_sysfs_install_table() but
it still seems wrong to return a freed pointer.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2010-06-01 12:04:35 -04:00
Feng Tang
dce80a5626 SFI: add sysfs interface for SFI tables.
Analogous to ACPI's /sys/firmware/acpi/tables/...

create /sys/firmware/sfi/tables/

The tables are primariy for the kernel,
but sometimes it is useful for user-space to be
able to read them.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2010-05-27 12:46:20 -04:00
Feng Tang
5487ab4a5a SFI: add support for v0.81 spec
There are 2 major changes from v0.81 to v0.7:
1. Consolidating the SPIB/I2CB tables into a new DEVS table,
   which is more expandable and can support other bus types
   than spi/i2c.
2. Creating a new GPIO table, which list all the GPIO pins
   used in the platform.

However, to avoid breaking current platforms who use SFI v0.7
version firmware, the definitions for SPIB/I2CB will still
be kept for a while

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2010-05-25 11:41:43 -04:00
Arjan van de Ven
011a606d06 SFI: remove __init from sfi_verify_table
sfi_verify_table() is called at runtime, and thus cannot be __init

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-10-03 01:16:12 -04:00
Rakib Mullick
01674da6f5 SFI: fix section mismatch warnings in sfi_core.c
The function sfi_map_memory/sfi_unmap_memory uses
early_ioremap/early_iounmap respectively, which refers to a __init
function.  And function sfi_check_table also refers to a __init function
sfi_verify_table.  Since the references are valid, so use __ref to get rid
of the warnings.

 We were warned by the following warnings:

  LD      vmlinux.o
  MODPOST vmlinux.o
WARNING: vmlinux.o(.text+0xb6ba3a): Section mismatch in reference from
the function sfi_map_memory() to the function
.init.text:early_ioremap()
The function sfi_map_memory() references
the function __init early_ioremap().
This is often because sfi_map_memory lacks a __init
annotation or the annotation of early_ioremap is wrong.

WARNING: vmlinux.o(.text+0xb6bab6): Section mismatch in reference from
the function sfi_unmap_memory() to the function
.init.text:early_iounmap()
The function sfi_unmap_memory() references
the function __init early_iounmap().
This is often because sfi_unmap_memory lacks a __init
annotation or the annotation of early_iounmap is wrong.

WARNING: vmlinux.o(.text+0xb6be30): Section mismatch in reference from
the function sfi_check_table() to the function
.init.text:sfi_verify_table()
The function sfi_check_table() references
the function __init sfi_verify_table().
This is often because sfi_check_table lacks a __init
annotation or the annotation of sfi_verify_table is wrong.

Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-10-03 01:03:11 -04:00
Feng Tang
3834f47291 SFI: remove unneeded includes
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-09-15 15:08:40 -04:00
Feng Tang
13e82d023c SFI: add capability to parse ACPI tables
Extend SFI to access standard ACPI tables.
(eg. the PCI MCFG) using sfi_acpi_table_parse().

Note that this is _not_ a hybrid ACPI + SFI mode.
The platform boots in either ACPI mode or SFI mode.

SFI runs only with acpi_disabled=1, which can be set
at build-time via CONFIG_ACPI=n, or at boot time by
the failure to find ACPI platform support.

So this extension simply allows SFI-platforms to
re-use existing standard table formats that happen to
be defined to live in ACPI envelopes.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28 19:57:33 -04:00
Feng Tang
6ae6996a46 SFI: add platform-independent core support
drivers/sfi/sfi_core.c contains the generic SFI implementation.
It has a private header, sfi_core.h, for its own use and the
private use of future files in drivers/sfi/

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28 19:57:33 -04:00
Len Brown
6349d9979b SFI: Simple Firmware Interface - MAINTAINERS, Kconfig
CONFIG_SFI=y enables the kernel to boot and run optimally
on platforms that support the Simple Firmware Interface.

Thanks to Jacob Pan for prototyping the initial Linux SFI support,
and to Feng Tang for Linux bring-up and debug both in emulation
and on Moorestown hardware.

See http://simplefirmware.org for more information on SFI.

Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28 19:57:29 -04:00