iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge v3.13-rc6 into char-misc-next

Browse Source 
We want these fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2014-01-08 20:02:31 -08:00
commit dde86f41f4
288 changed files with 2788 additions and 1403 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

72
Documentation/block/null_blk.txt Normal file
View File

@ -0,0 +1,72 @@
Null block device driver
================================================================================
I. Overview
The null block device (/dev/nullb*) is used for benchmarking the various
block-layer implementations. It emulates a block device of X gigabytes in size.
The following instances are possible:
Single-queue block-layer
- Request-based.
- Single submission queue per device.
- Implements IO scheduling algorithms (CFQ, Deadline, noop).
Multi-queue block-layer
- Request-based.
- Configurable submission queues per device.
No block-layer (Known as bio-based)
- Bio-based. IO requests are submitted directly to the device driver.
- Directly accepts bio data structure and returns them.
All of them have a completion queue for each core in the system.
II. Module parameters applicable for all instances:
queue_mode=[0-2]: Default: 2-Multi-queue
Selects which block-layer the module should instantiate with.
0: Bio-based.
1: Single-queue.
2: Multi-queue.
home_node=[0--nr_nodes]: Default: NUMA_NO_NODE
Selects what CPU node the data structures are allocated from.
gb=[Size in GB]: Default: 250GB
The size of the device reported to the system.
bs=[Block size (in bytes)]: Default: 512 bytes
The block size reported to the system.
nr_devices=[Number of devices]: Default: 2
Number of block devices instantiated. They are instantiated as /dev/nullb0,
etc.
irq_mode=[0-2]: Default: 1-Soft-irq
The completion mode used for completing IOs to the block-layer.
0: None.
1: Soft-irq. Uses IPI to complete IOs across CPU nodes. Simulates the overhead
when IOs are issued from another CPU node than the home the device is
connected to.
2: Timer: Waits a specific period (completion_nsec) for each IO before
completion.
completion_nsec=[ns]: Default: 10.000ns
Combined with irq_mode=2 (timer). The time each completion event must wait.
submit_queues=[0..nr_cpus]:
The number of submission queues attached to the device driver. If unset, it
defaults to 1 on single-queue and bio-based instances. For multi-queue,
it is ignored when use_per_node_hctx module parameter is 1.
hw_queue_depth=[0..qdepth]: Default: 64
The hardware queue depth of the device.
III: Multi-queue specific parameters
use_per_node_hctx=[0/1]: Default: 0
0: The number of submit queues are set to the value of the submit_queues
parameter.
1: The multi-queue block layer is instantiated with a hardware dispatch
queue for each CPU node in the system.

2
Documentation/kernel-parameters.txt
View File

@ -1529,6 +1529,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
* atapi_dmadir: Enable ATAPI DMADIR bridge support
* disable: Disable this device.
If there are multiple matching configurations changing
the same attribute, the last one is used.

240
Documentation/module-signing.txt Normal file
View File

@ -0,0 +1,240 @@
==============================
KERNEL MODULE SIGNING FACILITY
==============================
CONTENTS
- Overview.
- Configuring module signing.
- Generating signing keys.
- Public keys in the kernel.
- Manually signing modules.
- Signed modules and stripping.
- Loading signed modules.
- Non-valid signatures and unsigned modules.
- Administering/protecting the private key.
========
OVERVIEW
========
The kernel module signing facility cryptographically signs modules during
installation and then checks the signature upon loading the module. This
allows increased kernel security by disallowing the loading of unsigned modules
or modules signed with an invalid key. Module signing increases security by
making it harder to load a malicious module into the kernel. The module
signature checking is done by the kernel so that it is not necessary to have
trusted userspace bits.
This facility uses X.509 ITU-T standard certificates to encode the public keys
involved. The signatures are not themselves encoded in any industrial standard
type. The facility currently only supports the RSA public key encryption
standard (though it is pluggable and permits others to be used). The possible
hash algorithms that can be used are SHA-1, SHA-224, SHA-256, SHA-384, and
SHA-512 (the algorithm is selected by data in the signature).
==========================
CONFIGURING MODULE SIGNING
==========================
The module signing facility is enabled by going to the "Enable Loadable Module
Support" section of the kernel configuration and turning on
CONFIG_MODULE_SIG "Module signature verification"
This has a number of options available:
(1) "Require modules to be validly signed" (CONFIG_MODULE_SIG_FORCE)
This specifies how the kernel should deal with a module that has a
signature for which the key is not known or a module that is unsigned.
If this is off (ie. "permissive"), then modules for which the key is not
available and modules that are unsigned are permitted, but the kernel will
be marked as being tainted.
If this is on (ie. "restrictive"), only modules that have a valid
signature that can be verified by a public key in the kernel's possession
will be loaded. All other modules will generate an error.
Irrespective of the setting here, if the module has a signature block that
cannot be parsed, it will be rejected out of hand.
(2) "Automatically sign all modules" (CONFIG_MODULE_SIG_ALL)
If this is on then modules will be automatically signed during the
modules_install phase of a build. If this is off, then the modules must
be signed manually using:
scripts/sign-file
(3) "Which hash algorithm should modules be signed with?"
This presents a choice of which hash algorithm the installation phase will
sign the modules with:
CONFIG_SIG_SHA1 "Sign modules with SHA-1"
CONFIG_SIG_SHA224 "Sign modules with SHA-224"
CONFIG_SIG_SHA256 "Sign modules with SHA-256"
CONFIG_SIG_SHA384 "Sign modules with SHA-384"
CONFIG_SIG_SHA512 "Sign modules with SHA-512"
The algorithm selected here will also be built into the kernel (rather
than being a module) so that modules signed with that algorithm can have
their signatures checked without causing a dependency loop.
=======================
GENERATING SIGNING KEYS
=======================
Cryptographic keypairs are required to generate and check signatures. A
private key is used to generate a signature and the corresponding public key is
used to check it. The private key is only needed during the build, after which
it can be deleted or stored securely. The public key gets built into the
kernel so that it can be used to check the signatures as the modules are
loaded.
Under normal conditions, the kernel build will automatically generate a new
keypair using openssl if one does not exist in the files:
signing_key.priv
signing_key.x509
during the building of vmlinux (the public part of the key needs to be built
into vmlinux) using parameters in the:
x509.genkey
file (which is also generated if it does not already exist).
It is strongly recommended that you provide your own x509.genkey file.
Most notably, in the x509.genkey file, the req_distinguished_name section
should be altered from the default:
[ req_distinguished_name ]
O = Magrathea
CN = Glacier signing key
emailAddress = slartibartfast@magrathea.h2g2
The generated RSA key size can also be set with:
[ req ]
default_bits = 4096
It is also possible to manually generate the key private/public files using the
x509.genkey key generation configuration file in the root node of the Linux
kernel sources tree and the openssl command. The following is an example to
generate the public/private key files:
openssl req -new -nodes -utf8 -sha256 -days 36500 -batch -x509 \
-config x509.genkey -outform DER -out signing_key.x509 \
-keyout signing_key.priv
=========================
PUBLIC KEYS IN THE KERNEL
=========================
The kernel contains a ring of public keys that can be viewed by root. They're
in a keyring called ".system_keyring" that can be seen by:
[root@deneb ~]# cat /proc/keys
...
223c7853 I------ 1 perm 1f030000 0 0 keyring .system_keyring: 1
302d2d52 I------ 1 perm 1f010000 0 0 asymmetri Fedora kernel signing key: d69a84e6bce3d216b979e9505b3e3ef9a7118079: X509.RSA a7118079 []
...
Beyond the public key generated specifically for module signing, any file
placed in the kernel source root directory or the kernel build root directory
whose name is suffixed with ".x509" will be assumed to be an X.509 public key
and will be added to the keyring.
Further, the architecture code may take public keys from a hardware store and
add those in also (e.g. from the UEFI key database).
Finally, it is possible to add additional public keys by doing:
keyctl padd asymmetric "" [.system_keyring-ID] <[key-file]
e.g.:
keyctl padd asymmetric "" 0x223c7853 <my_public_key.x509
Note, however, that the kernel will only permit keys to be added to
.system_keyring _if_ the new key's X.509 wrapper is validly signed by a key
that is already resident in the .system_keyring at the time the key was added.
=========================
MANUALLY SIGNING MODULES
=========================
To manually sign a module, use the scripts/sign-file tool available in
the Linux kernel source tree. The script requires 4 arguments:
1. The hash algorithm (e.g., sha256)
2. The private key filename
3. The public key filename
4. The kernel module to be signed
The following is an example to sign a kernel module:
scripts/sign-file sha512 kernel-signkey.priv \
kernel-signkey.x509 module.ko
The hash algorithm used does not have to match the one configured, but if it
doesn't, you should make sure that hash algorithm is either built into the
kernel or can be loaded without requiring itself.
============================
SIGNED MODULES AND STRIPPING
============================
A signed module has a digital signature simply appended at the end. The string
"~Module signature appended~." at the end of the module's file confirms that a
signature is present but it does not confirm that the signature is valid!
Signed modules are BRITTLE as the signature is outside of the defined ELF
container. Thus they MAY NOT be stripped once the signature is computed and
attached. Note the entire module is the signed payload, including any and all
debug information present at the time of signing.
======================
LOADING SIGNED MODULES
======================
Modules are loaded with insmod, modprobe, init_module() or finit_module(),
exactly as for unsigned modules as no processing is done in userspace. The
signature checking is all done within the kernel.
=========================================
NON-VALID SIGNATURES AND UNSIGNED MODULES
=========================================
If CONFIG_MODULE_SIG_FORCE is enabled or enforcemodulesig=1 is supplied on
the kernel command line, the kernel will only load validly signed modules
for which it has a public key. Otherwise, it will also load modules that are
unsigned. Any module for which the kernel has a key, but which proves to have
a signature mismatch will not be permitted to load.
Any module that has an unparseable signature will be rejected.
=========================================
ADMINISTERING/PROTECTING THE PRIVATE KEY
=========================================
Since the private key is used to sign modules, viruses and malware could use
the private key to sign modules and compromise the operating system. The
private key must be either destroyed or moved to a secure location and not kept
in the root node of the kernel source tree.

8
Documentation/networking/ip-sysctl.txt
View File

@ -16,8 +16,12 @@ ip_default_ttl - INTEGER
Default: 64 (as recommended by RFC1700)
ip_no_pmtu_disc - BOOLEAN
Disable Path MTU Discovery.
default FALSE
Disable Path MTU Discovery. If enabled and a
fragmentation-required ICMP is received, the PMTU to this
destination will be set to min_pmtu (see below). You will need
to raise min_pmtu to the smallest interface MTU on your system
manually if you want to avoid locally generated fragments.
Default: FALSE
min_pmtu - INTEGER
default 552 - minimum discovered Path MTU

27
MAINTAINERS
View File

@ -1008,6 +1008,8 @@ M: Santosh Shilimkar <santosh.shilimkar@ti.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: arch/arm/mach-keystone/
F: drivers/clk/keystone/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone.git
ARM/LOGICPD PXA270 MACHINE SUPPORT
M: Lennert Buytenhek <kernel@wantstofly.org>
@ -3761,9 +3763,11 @@ F: include/uapi/linux/gigaset_dev.h
GPIO SUBSYSTEM
M: Linus Walleij <linus.walleij@linaro.org>
S: Maintained
M: Alexandre Courbot <gnurou@gmail.com>
L: linux-gpio@vger.kernel.org
F: Documentation/gpio.txt
T: git git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git
S: Maintained
F: Documentation/gpio/
F: drivers/gpio/
F: include/linux/gpio*
F: include/asm-generic/gpio.h
@ -3831,6 +3835,12 @@ T: git git://linuxtv.org/media_tree.git
S: Maintained
F: drivers/media/usb/gspca/
GUID PARTITION TABLE (GPT)
M: Davidlohr Bueso <davidlohr@hp.com>
L: linux-efi@vger.kernel.org
S: Maintained
F: block/partitions/efi.*
STK1160 USB VIDEO CAPTURE DRIVER
M: Ezequiel Garcia <elezegarcia@gmail.com>
L: linux-media@vger.kernel.org
@ -5911,12 +5921,21 @@ M: Steffen Klassert <steffen.klassert@secunet.com>
M: Herbert Xu <herbert@gondor.apana.org.au>
M: "David S. Miller" <davem@davemloft.net>
L: netdev@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next.git
S: Maintained
F: net/xfrm/
F: net/key/
F: net/ipv4/xfrm*
F: net/ipv4/esp4.c
F: net/ipv4/ah4.c
F: net/ipv4/ipcomp.c
F: net/ipv4/ip_vti.c
F: net/ipv6/xfrm*
F: net/ipv6/esp6.c
F: net/ipv6/ah6.c
F: net/ipv6/ipcomp6.c
F: net/ipv6/ip6_vti.c
F: include/uapi/linux/xfrm.h
F: include/net/xfrm.h
@ -9571,7 +9590,7 @@ F: drivers/xen/*swiotlb*
XFS FILESYSTEM
P: Silicon Graphics Inc
M: Dave Chinner <dchinner@fromorbit.com>
M: Dave Chinner <david@fromorbit.com>
M: Ben Myers <bpm@sgi.com>
M: xfs@oss.sgi.com
L: xfs@oss.sgi.com

24
Makefile
View File

@ -1,7 +1,7 @@
VERSION = 3
PATCHLEVEL = 13
SUBLEVEL = 0
EXTRAVERSION = -rc4
EXTRAVERSION = -rc6
NAME = One Giant Leap for Frogkind
# *DOCUMENTATION*
@ -732,19 +732,15 @@ export mod_strip_cmd
# Select initial ramdisk compression format, default is gzip(1).
# This shall be used by the dracut(8) tool while creating an initramfs image.
#
INITRD_COMPRESS=gzip
ifeq ($(CONFIG_RD_BZIP2), y)
INITRD_COMPRESS=bzip2
else ifeq ($(CONFIG_RD_LZMA), y)
INITRD_COMPRESS=lzma
else ifeq ($(CONFIG_RD_XZ), y)
INITRD_COMPRESS=xz
else ifeq ($(CONFIG_RD_LZO), y)
INITRD_COMPRESS=lzo
else ifeq ($(CONFIG_RD_LZ4), y)
INITRD_COMPRESS=lz4
endif
export INITRD_COMPRESS
INITRD_COMPRESS-y := gzip
INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2
INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma
INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz
INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo
INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4
# do not export INITRD_COMPRESS, since we didn't actually
# choose a sane default compression above.
# export INITRD_COMPRESS := $(INITRD_COMPRESS-y)
ifdef CONFIG_MODULE_SIG_ALL
MODSECKEY = ./signing_key.priv

8
arch/arc/include/uapi/asm/unistd.h
View File

@ -8,7 +8,11 @@
/******** no-legacy-syscalls-ABI *******/
#ifndef _UAPI_ASM_ARC_UNISTD_H
/*
* Non-typical guard macro to enable inclusion twice in ARCH sys.c
* That is how the Generic syscall wrapper generator works
*/
#if !defined(_UAPI_ASM_ARC_UNISTD_H) || defined(__SYSCALL)
#define _UAPI_ASM_ARC_UNISTD_H
#define __ARCH_WANT_SYS_EXECVE
@ -36,4 +40,6 @@ __SYSCALL(__NR_arc_gettls, sys_arc_gettls)
#define __NR_sysfs (__NR_arch_specific_syscall + 3)
__SYSCALL(__NR_sysfs, sys_sysfs)
#undef __SYSCALL
#endif

28
arch/arm/boot/dts/r8a7790.dtsi
View File

@ -87,9 +87,9 @@
interrupts = <1 9 0xf04>;
};
gpio0: gpio@ffc40000 {
gpio0: gpio@e6050000 {
compatible = "renesas,gpio-r8a7790", "renesas,gpio-rcar";
reg = <0 0xffc40000 0 0x2c>;
reg = <0 0xe6050000 0 0x50>;
interrupt-parent = <&gic>;
interrupts = <0 4 0x4>;
#gpio-cells = <2>;
@ -99,9 +99,9 @@
interrupt-controller;
};
gpio1: gpio@ffc41000 {
gpio1: gpio@e6051000 {
compatible = "renesas,gpio-r8a7790", "renesas,gpio-rcar";
reg = <0 0xffc41000 0 0x2c>;
reg = <0 0xe6051000 0 0x50>;
interrupt-parent = <&gic>;
interrupts = <0 5 0x4>;
#gpio-cells = <2>;
@ -111,9 +111,9 @@
interrupt-controller;
};
gpio2: gpio@ffc42000 {
gpio2: gpio@e6052000 {
compatible = "renesas,gpio-r8a7790", "renesas,gpio-rcar";
reg = <0 0xffc42000 0 0x2c>;
reg = <0 0xe6052000 0 0x50>;
interrupt-parent = <&gic>;
interrupts = <0 6 0x4>;
#gpio-cells = <2>;
@ -123,9 +123,9 @@
interrupt-controller;
};
gpio3: gpio@ffc43000 {
gpio3: gpio@e6053000 {
compatible = "renesas,gpio-r8a7790", "renesas,gpio-rcar";
reg = <0 0xffc43000 0 0x2c>;
reg = <0 0xe6053000 0 0x50>;
interrupt-parent = <&gic>;
interrupts = <0 7 0x4>;
#gpio-cells = <2>;
@ -135,9 +135,9 @@
interrupt-controller;
};
gpio4: gpio@ffc44000 {
gpio4: gpio@e6054000 {
compatible = "renesas,gpio-r8a7790", "renesas,gpio-rcar";
reg = <0 0xffc44000 0 0x2c>;
reg = <0 0xe6054000 0 0x50>;
interrupt-parent = <&gic>;
interrupts = <0 8 0x4>;
#gpio-cells = <2>;
@ -147,9 +147,9 @@
interrupt-controller;
};
gpio5: gpio@ffc45000 {
gpio5: gpio@e6055000 {
compatible = "renesas,gpio-r8a7790", "renesas,gpio-rcar";
reg = <0 0xffc45000 0 0x2c>;
reg = <0 0xe6055000 0 0x50>;
interrupt-parent = <&gic>;
interrupts = <0 9 0x4>;
#gpio-cells = <2>;
@ -241,7 +241,7 @@
sdhi0: sdhi@ee100000 {
compatible = "renesas,sdhi-r8a7790";
reg = <0 0xee100000 0 0x100>;
reg = <0 0xee100000 0 0x200>;
interrupt-parent = <&gic>;
interrupts = <0 165 4>;
cap-sd-highspeed;
@ -250,7 +250,7 @@
sdhi1: sdhi@ee120000 {
compatible = "renesas,sdhi-r8a7790";
reg = <0 0xee120000 0 0x100>;
reg = <0 0xee120000 0 0x200>;
interrupt-parent = <&gic>;
interrupts = <0 166 4>;
cap-sd-highspeed;

7
arch/arm/mach-omap2/board-ldp.c
View File

@ -242,12 +242,18 @@ static void __init ldp_display_init(void)
static int ldp_twl_gpio_setup(struct device *dev, unsigned gpio, unsigned ngpio)
{
int res;
/* LCD enable GPIO */
ldp_lcd_pdata.enable_gpio = gpio + 7;
/* Backlight enable GPIO */
ldp_lcd_pdata.backlight_gpio = gpio + 15;
res = platform_device_register(&ldp_lcd_device);
if (res)
pr_err("Unable to register LCD: %d\n", res);
return 0;
}
@ -346,7 +352,6 @@ static struct omap2_hsmmc_info mmc[] __initdata = {
static struct platform_device *ldp_devices[] __initdata = {
&ldp_gpio_keys_device,
&ldp_lcd_device,
};
#ifdef CONFIG_OMAP_MUX

38
arch/arm/mach-omap2/display.c
View File

@ -101,13 +101,51 @@ static const struct omap_dss_hwmod_data omap4_dss_hwmod_data[] __initconst = {
{ "dss_hdmi", "omapdss_hdmi", -1 },
};
static int omap4_dsi_mux_pads(int dsi_id, unsigned lanes)
{
u32 enable_mask, enable_shift;
u32 pipd_mask, pipd_shift;
u32 reg;
if (dsi_id == 0) {
enable_mask = OMAP4_DSI1_LANEENABLE_MASK;
enable_shift = OMAP4_DSI1_LANEENABLE_SHIFT;
pipd_mask = OMAP4_DSI1_PIPD_MASK;
pipd_shift = OMAP4_DSI1_PIPD_SHIFT;
} else if (dsi_id == 1) {
enable_mask = OMAP4_DSI2_LANEENABLE_MASK;
enable_shift = OMAP4_DSI2_LANEENABLE_SHIFT;
pipd_mask = OMAP4_DSI2_PIPD_MASK;
pipd_shift = OMAP4_DSI2_PIPD_SHIFT;
} else {
return -ENODEV;
}
reg = omap4_ctrl_pad_readl(OMAP4_CTRL_MODULE_PAD_CORE_CONTROL_DSIPHY);
reg &= ~enable_mask;
reg &= ~pipd_mask;
reg |= (lanes << enable_shift) & enable_mask;
reg |= (lanes << pipd_shift) & pipd_mask;
omap4_ctrl_pad_writel(reg, OMAP4_CTRL_MODULE_PAD_CORE_CONTROL_DSIPHY);
return 0;
}
static int omap_dsi_enable_pads(int dsi_id, unsigned lane_mask)
{
if (cpu_is_omap44xx())
return omap4_dsi_mux_pads(dsi_id, lane_mask);
return 0;
}
static void omap_dsi_disable_pads(int dsi_id, unsigned lane_mask)
{
if (cpu_is_omap44xx())
omap4_dsi_mux_pads(dsi_id, 0);
}
static int omap_dss_set_min_bus_tput(struct device *dev, unsigned long tput)

4
arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c
View File

@ -796,7 +796,7 @@ struct omap_hwmod omap2xxx_counter_32k_hwmod = {
/* gpmc */
static struct omap_hwmod_irq_info omap2xxx_gpmc_irqs[] = {
{ .irq = 20 },
{ .irq = 20 + OMAP_INTC_START, },
{ .irq = -1 }
};
@ -841,7 +841,7 @@ static struct omap_hwmod_class omap2_rng_hwmod_class = {
};
static struct omap_hwmod_irq_info omap2_rng_mpu_irqs[] = {
{ .irq = 52 },
{ .irq = 52 + OMAP_INTC_START, },
{ .irq = -1 }
};

6
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
View File

@ -2165,7 +2165,7 @@ static struct omap_hwmod_class omap3xxx_gpmc_hwmod_class = {
};
static struct omap_hwmod_irq_info omap3xxx_gpmc_irqs[] = {
{ .irq = 20 },
{ .irq = 20 + OMAP_INTC_START, },
{ .irq = -1 }
};
@ -2999,7 +2999,7 @@ static struct omap_mmu_dev_attr mmu_isp_dev_attr = {
static struct omap_hwmod omap3xxx_mmu_isp_hwmod;
static struct omap_hwmod_irq_info omap3xxx_mmu_isp_irqs[] = {
{ .irq = 24 },
{ .irq = 24 + OMAP_INTC_START, },
{ .irq = -1 }
};
@ -3041,7 +3041,7 @@ static struct omap_mmu_dev_attr mmu_iva_dev_attr = {
static struct omap_hwmod omap3xxx_mmu_iva_hwmod;
static struct omap_hwmod_irq_info omap3xxx_mmu_iva_irqs[] = {
{ .irq = 28 },
{ .irq = 28 + OMAP_INTC_START, },
{ .irq = -1 }
};

2
arch/arm/mach-omap2/omap_hwmod_7xx_data.c
View File

@ -1637,7 +1637,7 @@ static struct omap_hwmod dra7xx_uart1_hwmod = {
.class = &dra7xx_uart_hwmod_class,
.clkdm_name = "l4per_clkdm",
.main_clk = "uart1_gfclk_mux",
.flags = HWMOD_SWSUP_SIDLE_ACT,
.flags = HWMOD_SWSUP_SIDLE_ACT | DEBUG_OMAP2UART1_FLAGS,
.prcm = {
.omap4 = {
.clkctrl_offs = DRA7XX_CM_L4PER_UART1_CLKCTRL_OFFSET,

2
arch/arm/mach-pxa/include/mach/lubbock.h
View File

@ -10,6 +10,8 @@
* published by the Free Software Foundation.
*/
#include <mach/irqs.h>
#define LUBBOCK_ETH_PHYS PXA_CS3_PHYS
#define LUBBOCK_FPGA_PHYS PXA_CS2_PHYS

11
arch/arm/mach-s3c64xx/mach-s3c64xx-dt.c
View File

@ -8,8 +8,6 @@
* published by the Free Software Foundation.
*/
#include <linux/clk-provider.h>
#include <linux/irqchip.h>
#include <linux/of_platform.h>
#include <asm/mach/arch.h>
@ -48,15 +46,9 @@ static void __init s3c64xx_dt_map_io(void)
panic("SoC is not S3C64xx!");
}
static void __init s3c64xx_dt_init_irq(void)
{
of_clk_init(NULL);
samsung_wdt_reset_of_init();
irqchip_init();
};
static void __init s3c64xx_dt_init_machine(void)
{
samsung_wdt_reset_of_init();
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
@ -79,7 +71,6 @@ DT_MACHINE_START(S3C6400_DT, "Samsung S3C64xx (Flattened Device Tree)")
/* Maintainer: Tomasz Figa <tomasz.figa@gmail.com> */
.dt_compat = s3c64xx_dt_compat,
.map_io = s3c64xx_dt_map_io,
.init_irq = s3c64xx_dt_init_irq,
.init_machine = s3c64xx_dt_init_machine,
.restart = s3c64xx_dt_restart,
MACHINE_END

7
arch/arm/mach-shmobile/board-armadillo800eva.c
View File

@ -614,6 +614,11 @@ static struct regulator_consumer_supply fixed3v3_power_consumers[] = {
REGULATOR_SUPPLY("vqmmc", "sh_mmcif"),
};
/* Fixed 3.3V regulator used by LCD backlight */
static struct regulator_consumer_supply fixed5v0_power_consumers[] = {
REGULATOR_SUPPLY("power", "pwm-backlight.0"),
};
/* Fixed 3.3V regulator to be used by SDHI0 */
static struct regulator_consumer_supply vcc_sdhi0_consumers[] = {
REGULATOR_SUPPLY("vmmc", "sh_mobile_sdhi.0"),
@ -1196,6 +1201,8 @@ static void __init eva_init(void)
regulator_register_always_on(0, "fixed-3.3V", fixed3v3_power_consumers,
ARRAY_SIZE(fixed3v3_power_consumers), 3300000);
regulator_register_always_on(3, "fixed-5.0V", fixed5v0_power_consumers,
ARRAY_SIZE(fixed5v0_power_consumers), 5000000);
pinctrl_register_mappings(eva_pinctrl_map, ARRAY_SIZE(eva_pinctrl_map));
pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup));

2
arch/arm/mach-shmobile/board-bockw.c
View File

@ -679,7 +679,7 @@ static void __init bockw_init(void)
.id = i,
.data = &rsnd_card_info[i],
.size_data = sizeof(struct asoc_simple_card_info),
.dma_mask = ~0,
.dma_mask = DMA_BIT_MASK(32),
};
platform_device_register_full(&cardinfo);

4
arch/arm/mach-shmobile/board-lager.c
View File

@ -245,7 +245,9 @@ static void __init lager_init(void)
{
lager_add_standard_devices();
phy_register_fixup_for_id("r8a7790-ether-ff:01", lager_ksz8041_fixup);
if (IS_ENABLED(CONFIG_PHYLIB))
phy_register_fixup_for_id("r8a7790-ether-ff:01",
lager_ksz8041_fixup);
}
static const char * const lager_boards_compat_dt[] __initconst = {

6
arch/arm/xen/enlighten.c
View File

@ -96,7 +96,7 @@ static int remap_pte_fn(pte_t *ptep, pgtable_t token, unsigned long addr,
struct remap_data *info = data;
struct page *page = info->pages[info->index++];
unsigned long pfn = page_to_pfn(page);
pte_t pte = pfn_pte(pfn, info->prot);
pte_t pte = pte_mkspecial(pfn_pte(pfn, info->prot));
if (map_foreign_page(pfn, info->fgmfn, info->domid))
return -EFAULT;
@ -224,10 +224,10 @@ static int __init xen_guest_init(void)
}
if (of_address_to_resource(node, GRANT_TABLE_PHYSADDR, &res))
return 0;
xen_hvm_resume_frames = res.start >> PAGE_SHIFT;
xen_hvm_resume_frames = res.start;
xen_events_irq = irq_of_parse_and_map(node, 0);
pr_info("Xen %s support found, events_irq=%d gnttab_frame_pfn=%lx\n",
version, xen_events_irq, xen_hvm_resume_frames);
version, xen_events_irq, (xen_hvm_resume_frames >> PAGE_SHIFT));
xen_domain_type = XEN_HVM_DOMAIN;
xen_setup_features();

4
arch/arm64/include/asm/xen/page-coherent.h
View File

@ -23,25 +23,21 @@ static inline void xen_dma_map_page(struct device *hwdev, struct page *page,
unsigned long offset, size_t size, enum dma_data_direction dir,
struct dma_attrs *attrs)
{
__generic_dma_ops(hwdev)->map_page(hwdev, page, offset, size, dir, attrs);
}
static inline void xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
size_t size, enum dma_data_direction dir,
struct dma_attrs *attrs)
{
__generic_dma_ops(hwdev)->unmap_page(hwdev, handle, size, dir, attrs);
}
static inline void xen_dma_sync_single_for_cpu(struct device *hwdev,
dma_addr_t handle, size_t size, enum dma_data_direction dir)
{
__generic_dma_ops(hwdev)->sync_single_for_cpu(hwdev, handle, size, dir);
}
static inline void xen_dma_sync_single_for_device(struct device *hwdev,
dma_addr_t handle, size_t size, enum dma_data_direction dir)
{
__generic_dma_ops(hwdev)->sync_single_for_device(hwdev, handle, size, dir);
}
#endif /* _ASM_ARM64_XEN_PAGE_COHERENT_H */

36
arch/arm64/kernel/ptrace.c
View File

@ -214,31 +214,29 @@ static int ptrace_hbp_fill_attr_ctrl(unsigned int note_type,
{
int err, len, type, disabled = !ctrl.enabled;
if (disabled) {
len = 0;
type = HW_BREAKPOINT_EMPTY;
} else {
err = arch_bp_generic_fields(ctrl, &len, &type);
if (err)
return err;
attr->disabled = disabled;
if (disabled)
return 0;
switch (note_type) {
case NT_ARM_HW_BREAK:
if ((type & HW_BREAKPOINT_X) != type)
return -EINVAL;
break;
case NT_ARM_HW_WATCH:
if ((type & HW_BREAKPOINT_RW) != type)
return -EINVAL;
break;
default:
err = arch_bp_generic_fields(ctrl, &len, &type);
if (err)
return err;
switch (note_type) {
case NT_ARM_HW_BREAK:
if ((type & HW_BREAKPOINT_X) != type)
return -EINVAL;
}
break;
case NT_ARM_HW_WATCH:
if ((type & HW_BREAKPOINT_RW) != type)
return -EINVAL;
break;
default:
return -EINVAL;
}
attr->bp_len = len;
attr->bp_type = type;
attr->disabled = disabled;
return 0;
}

4
arch/powerpc/include/asm/kvm_book3s.h
View File

@ -192,6 +192,10 @@ extern void kvmppc_load_up_vsx(void);
extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
extern void kvmppc_copy_to_svcpu(struct kvmppc_book3s_shadow_vcpu *svcpu,
struct kvm_vcpu *vcpu);
extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu,
struct kvmppc_book3s_shadow_vcpu *svcpu);
static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
{

2
arch/powerpc/include/asm/kvm_book3s_asm.h
View File

@ -79,6 +79,7 @@ struct kvmppc_host_state {
ulong vmhandler;
ulong scratch0;
ulong scratch1;
ulong scratch2;
u8 in_guest;
u8 restore_hid5;
u8 napping;
@ -106,6 +107,7 @@ struct kvmppc_host_state {
};
struct kvmppc_book3s_shadow_vcpu {
bool in_use;
ulong gpr[14];
u32 cr;
u32 xer;

4
arch/powerpc/include/asm/opal.h
View File

@ -720,13 +720,13 @@ int64_t opal_pci_next_error(uint64_t phb_id, uint64_t *first_frozen_pe,
int64_t opal_pci_poll(uint64_t phb_id);
int64_t opal_return_cpu(void);
int64_t opal_xscom_read(uint32_t gcid, uint32_t pcb_addr, uint64_t *val);
int64_t opal_xscom_read(uint32_t gcid, uint32_t pcb_addr, __be64 *val);
int64_t opal_xscom_write(uint32_t gcid, uint32_t pcb_addr, uint64_t val);
int64_t opal_lpc_write(uint32_t chip_id, enum OpalLPCAddressType addr_type,
uint32_t addr, uint32_t data, uint32_t sz);
int64_t opal_lpc_read(uint32_t chip_id, enum OpalLPCAddressType addr_type,
uint32_t addr, uint32_t *data, uint32_t sz);
uint32_t addr, __be32 *data, uint32_t sz);
int64_t opal_validate_flash(uint64_t buffer, uint32_t *size, uint32_t *result);
int64_t opal_manage_flash(uint8_t op);
int64_t opal_update_flash(uint64_t blk_list);

2
arch/powerpc/include/asm/switch_to.h
View File

@ -35,7 +35,7 @@ extern void giveup_vsx(struct task_struct *);
extern void enable_kernel_spe(void);
extern void giveup_spe(struct task_struct *);
extern void load_up_spe(struct task_struct *);
extern void switch_booke_debug_regs(struct thread_struct *new_thread);
extern void switch_booke_debug_regs(struct debug_reg *new_debug);
#ifndef CONFIG_SMP
extern void discard_lazy_cpu_state(void);

1
arch/powerpc/kernel/asm-offsets.c
View File

@ -576,6 +576,7 @@ int main(void)
HSTATE_FIELD(HSTATE_VMHANDLER, vmhandler);
HSTATE_FIELD(HSTATE_SCRATCH0, scratch0);
HSTATE_FIELD(HSTATE_SCRATCH1, scratch1);
HSTATE_FIELD(HSTATE_SCRATCH2, scratch2);
HSTATE_FIELD(HSTATE_IN_GUEST, in_guest);
HSTATE_FIELD(HSTATE_RESTORE_HID5, restore_hid5);
HSTATE_FIELD(HSTATE_NAPPING, napping);

6
arch/powerpc/kernel/crash_dump.c
View File

@ -124,15 +124,15 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
void crash_free_reserved_phys_range(unsigned long begin, unsigned long end)
{
unsigned long addr;
const u32 *basep, *sizep;
const __be32 *basep, *sizep;
unsigned int rtas_start = 0, rtas_end = 0;
basep = of_get_property(rtas.dev, "linux,rtas-base", NULL);
sizep = of_get_property(rtas.dev, "rtas-size", NULL);
if (basep && sizep) {
rtas_start = *basep;
rtas_end = *basep + *sizep;
rtas_start = be32_to_cpup(basep);
rtas_end = rtas_start + be32_to_cpup(sizep);
}
for (addr = begin; addr < end; addr += PAGE_SIZE) {

32
arch/powerpc/kernel/process.c
View File

@ -339,7 +339,7 @@ static void set_debug_reg_defaults(struct thread_struct *thread)
#endif
}
static void prime_debug_regs(struct thread_struct *thread)
static void prime_debug_regs(struct debug_reg *debug)
{
/*
* We could have inherited MSR_DE from userspace, since
@ -348,22 +348,22 @@ static void prime_debug_regs(struct thread_struct *thread)
*/
mtmsr(mfmsr() & ~MSR_DE);
mtspr(SPRN_IAC1, thread->debug.iac1);
mtspr(SPRN_IAC2, thread->debug.iac2);
mtspr(SPRN_IAC1, debug->iac1);
mtspr(SPRN_IAC2, debug->iac2);
#if CONFIG_PPC_ADV_DEBUG_IACS > 2
mtspr(SPRN_IAC3, thread->debug.iac3);
mtspr(SPRN_IAC4, thread->debug.iac4);
mtspr(SPRN_IAC3, debug->iac3);
mtspr(SPRN_IAC4, debug->iac4);
#endif
mtspr(SPRN_DAC1, thread->debug.dac1);
mtspr(SPRN_DAC2, thread->debug.dac2);
mtspr(SPRN_DAC1, debug->dac1);
mtspr(SPRN_DAC2, debug->dac2);
#if CONFIG_PPC_ADV_DEBUG_DVCS > 0
mtspr(SPRN_DVC1, thread->debug.dvc1);
mtspr(SPRN_DVC2, thread->debug.dvc2);
mtspr(SPRN_DVC1, debug->dvc1);
mtspr(SPRN_DVC2, debug->dvc2);
#endif
mtspr(SPRN_DBCR0, thread->debug.dbcr0);
mtspr(SPRN_DBCR1, thread->debug.dbcr1);
mtspr(SPRN_DBCR0, debug->dbcr0);
mtspr(SPRN_DBCR1, debug->dbcr1);
#ifdef CONFIG_BOOKE
mtspr(SPRN_DBCR2, thread->debug.dbcr2);
mtspr(SPRN_DBCR2, debug->dbcr2);
#endif
}
/*
@ -371,11 +371,11 @@ static void prime_debug_regs(struct thread_struct *thread)
* debug registers, set the debug registers from the values
* stored in the new thread.
*/
void switch_booke_debug_regs(struct thread_struct *new_thread)
void switch_booke_debug_regs(struct debug_reg *new_debug)
{
if ((current->thread.debug.dbcr0 & DBCR0_IDM)
|| (new_thread->debug.dbcr0 & DBCR0_IDM))
prime_debug_regs(new_thread);
|| (new_debug->dbcr0 & DBCR0_IDM))
prime_debug_regs(new_debug);
}
EXPORT_SYMBOL_GPL(switch_booke_debug_regs);
#else /* !CONFIG_PPC_ADV_DEBUG_REGS */
@ -683,7 +683,7 @@ struct task_struct *__switch_to(struct task_struct *prev,
#endif /* CONFIG_SMP */
#ifdef CONFIG_PPC_ADV_DEBUG_REGS
switch_booke_debug_regs(&new->thread);
switch_booke_debug_regs(&new->thread.debug);
#else
/*
* For PPC_BOOK3S_64, we use the hw-breakpoint interfaces that would

4
arch/powerpc/kernel/ptrace.c
View File

@ -1555,7 +1555,7 @@ long arch_ptrace(struct task_struct *child, long request,
flush_fp_to_thread(child);
if (fpidx < (PT_FPSCR - PT_FPR0))
memcpy(&tmp, &child->thread.fp_state.fpr,
memcpy(&tmp, &child->thread.TS_FPR(fpidx),
sizeof(long));
else
tmp = child->thread.fp_state.fpscr;
@ -1588,7 +1588,7 @@ long arch_ptrace(struct task_struct *child, long request,
flush_fp_to_thread(child);
if (fpidx < (PT_FPSCR - PT_FPR0))
memcpy(&child->thread.fp_state.fpr, &data,
memcpy(&child->thread.TS_FPR(fpidx), &data,
sizeof(long));
else
child->thread.fp_state.fpscr = data;

4
arch/powerpc/kernel/setup-common.c
View File

@ -479,7 +479,7 @@ void __init smp_setup_cpu_maps(void)
if (machine_is(pseries) && firmware_has_feature(FW_FEATURE_LPAR) &&
(dn = of_find_node_by_path("/rtas"))) {
int num_addr_cell, num_size_cell, maxcpus;
const unsigned int *ireg;
const __be32 *ireg;
num_addr_cell = of_n_addr_cells(dn);
num_size_cell = of_n_size_cells(dn);
@ -489,7 +489,7 @@ void __init smp_setup_cpu_maps(void)
if (!ireg)
goto out;
maxcpus = ireg[num_addr_cell + num_size_cell];
maxcpus = be32_to_cpup(ireg + num_addr_cell + num_size_cell);
/* Double maxcpus for processors which have SMT capability */
if (cpu_has_feature(CPU_FTR_SMT))

4
arch/powerpc/kernel/smp.c
View File

@ -580,7 +580,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *tidle)
int cpu_to_core_id(int cpu)
{
struct device_node *np;
const int *reg;
const __be32 *reg;
int id = -1;
np = of_get_cpu_node(cpu, NULL);
@ -591,7 +591,7 @@ int cpu_to_core_id(int cpu)
if (!reg)
goto out;
id = *reg;
id = be32_to_cpup(reg);
out:
of_node_put(np);
return id;

18
arch/powerpc/kvm/book3s_64_mmu_hv.c
View File

@ -469,11 +469,14 @@ static int kvmppc_mmu_book3s_64_hv_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
slb_v = vcpu->kvm->arch.vrma_slb_v;
}
preempt_disable();
/* Find the HPTE in the hash table */
index = kvmppc_hv_find_lock_hpte(kvm, eaddr, slb_v,
HPTE_V_VALID | HPTE_V_ABSENT);
if (index < 0)
if (index < 0) {
preempt_enable();
return -ENOENT;
}
hptep = (unsigned long *)(kvm->arch.hpt_virt + (index << 4));
v = hptep[0] & ~HPTE_V_HVLOCK;
gr = kvm->arch.revmap[index].guest_rpte;
@ -481,6 +484,7 @@ static int kvmppc_mmu_book3s_64_hv_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
/* Unlock the HPTE */
asm volatile("lwsync" : : : "memory");
hptep[0] = v;
preempt_enable();
gpte->eaddr = eaddr;
gpte->vpage = ((v & HPTE_V_AVPN) << 4) | ((eaddr >> 12) & 0xfff);
@ -665,6 +669,7 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
return -EFAULT;
} else {
page = pages[0];
pfn = page_to_pfn(page);
if (PageHuge(page)) {
page = compound_head(page);
pte_size <<= compound_order(page);
@ -689,7 +694,6 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
}
rcu_read_unlock_sched();
}
pfn = page_to_pfn(page);
}
ret = -EFAULT;
@ -707,8 +711,14 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
r = (r & ~(HPTE_R_W|HPTE_R_I|HPTE_R_G)) | HPTE_R_M;
}
/* Set the HPTE to point to pfn */
r = (r & ~(HPTE_R_PP0 - pte_size)) | (pfn << PAGE_SHIFT);
/*
* Set the HPTE to point to pfn.
* Since the pfn is at PAGE_SIZE granularity, make sure we
* don't mask out lower-order bits if psize < PAGE_SIZE.
*/
if (psize < PAGE_SIZE)
psize = PAGE_SIZE;
r = (r & ~(HPTE_R_PP0 - psize)) | ((pfn << PAGE_SHIFT) & ~(psize - 1));
if (hpte_is_writable(r) && !write_ok)
r = hpte_make_readonly(r);
ret = RESUME_GUEST;

24
arch/powerpc/kvm/book3s_hv.c
View File

@ -131,8 +131,9 @@ static void kvmppc_fast_vcpu_kick_hv(struct kvm_vcpu *vcpu)
static void kvmppc_core_vcpu_load_hv(struct kvm_vcpu *vcpu, int cpu)
{
struct kvmppc_vcore *vc = vcpu->arch.vcore;
unsigned long flags;
spin_lock(&vcpu->arch.tbacct_lock);
spin_lock_irqsave(&vcpu->arch.tbacct_lock, flags);
if (vc->runner == vcpu && vc->vcore_state != VCORE_INACTIVE &&
vc->preempt_tb != TB_NIL) {
vc->stolen_tb += mftb() - vc->preempt_tb;
@ -143,19 +144,20 @@ static void kvmppc_core_vcpu_load_hv(struct kvm_vcpu *vcpu, int cpu)
vcpu->arch.busy_stolen += mftb() - vcpu->arch.busy_preempt;
vcpu->arch.busy_preempt = TB_NIL;
}
spin_unlock(&vcpu->arch.tbacct_lock);
spin_unlock_irqrestore(&vcpu->arch.tbacct_lock, flags);
}
static void kvmppc_core_vcpu_put_hv(struct kvm_vcpu *vcpu)
{
struct kvmppc_vcore *vc = vcpu->arch.vcore;
unsigned long flags;
spin_lock(&vcpu->arch.tbacct_lock);
spin_lock_irqsave(&vcpu->arch.tbacct_lock, flags);
if (vc->runner == vcpu && vc->vcore_state != VCORE_INACTIVE)
vc->preempt_tb = mftb();
if (vcpu->arch.state == KVMPPC_VCPU_BUSY_IN_HOST)
vcpu->arch.busy_preempt = mftb();
spin_unlock(&vcpu->arch.tbacct_lock);
spin_unlock_irqrestore(&vcpu->arch.tbacct_lock, flags);
}
static void kvmppc_set_msr_hv(struct kvm_vcpu *vcpu, u64 msr)
@ -486,11 +488,11 @@ static u64 vcore_stolen_time(struct kvmppc_vcore *vc, u64 now)
*/
if (vc->vcore_state != VCORE_INACTIVE &&
vc->runner->arch.run_task != current) {
spin_lock(&vc->runner->arch.tbacct_lock);
spin_lock_irq(&vc->runner->arch.tbacct_lock);
p = vc->stolen_tb;
if (vc->preempt_tb != TB_NIL)
p += now - vc->preempt_tb;
spin_unlock(&vc->runner->arch.tbacct_lock);
spin_unlock_irq(&vc->runner->arch.tbacct_lock);
} else {
p = vc->stolen_tb;
}
@ -512,10 +514,10 @@ static void kvmppc_create_dtl_entry(struct kvm_vcpu *vcpu,
core_stolen = vcore_stolen_time(vc, now);
stolen = core_stolen - vcpu->arch.stolen_logged;
vcpu->arch.stolen_logged = core_stolen;
spin_lock(&vcpu->arch.tbacct_lock);
spin_lock_irq(&vcpu->arch.tbacct_lock);
stolen += vcpu->arch.busy_stolen;
vcpu->arch.busy_stolen = 0;
spin_unlock(&vcpu->arch.tbacct_lock);
spin_unlock_irq(&vcpu->arch.tbacct_lock);
if (!dt || !vpa)
return;
memset(dt, 0, sizeof(struct dtl_entry));
@ -589,7 +591,9 @@ int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu)
if (list_empty(&vcpu->kvm->arch.rtas_tokens))
return RESUME_HOST;
idx = srcu_read_lock(&vcpu->kvm->srcu);
rc = kvmppc_rtas_hcall(vcpu);
srcu_read_unlock(&vcpu->kvm->srcu, idx);
if (rc == -ENOENT)
return RESUME_HOST;
@ -1115,13 +1119,13 @@ static void kvmppc_remove_runnable(struct kvmppc_vcore *vc,
if (vcpu->arch.state != KVMPPC_VCPU_RUNNABLE)
return;
spin_lock(&vcpu->arch.tbacct_lock);
spin_lock_irq(&vcpu->arch.tbacct_lock);
now = mftb();
vcpu->arch.busy_stolen += vcore_stolen_time(vc, now) -
vcpu->arch.stolen_logged;
vcpu->arch.busy_preempt = now;
vcpu->arch.state = KVMPPC_VCPU_BUSY_IN_HOST;
spin_unlock(&vcpu->arch.tbacct_lock);
spin_unlock_irq(&vcpu->arch.tbacct_lock);
--vc->n_runnable;
list_del(&vcpu->arch.run_list);
}

9
arch/powerpc/kvm/book3s_hv_rm_mmu.c
View File

@ -225,6 +225,7 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
is_io = pa & (HPTE_R_I | HPTE_R_W);
pte_size = PAGE_SIZE << (pa & KVMPPC_PAGE_ORDER_MASK);
pa &= PAGE_MASK;
pa |= gpa & ~PAGE_MASK;
} else {
/* Translate to host virtual address */
hva = __gfn_to_hva_memslot(memslot, gfn);
@ -238,13 +239,13 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
ptel = hpte_make_readonly(ptel);
is_io = hpte_cache_bits(pte_val(pte));
pa = pte_pfn(pte) << PAGE_SHIFT;
pa |= hva & (pte_size - 1);
pa |= gpa & ~PAGE_MASK;
}
}
if (pte_size < psize)
return H_PARAMETER;
if (pa && pte_size > psize)
pa |= gpa & (pte_size - 1);
ptel &= ~(HPTE_R_PP0 - psize);
ptel |= pa;
@ -749,6 +750,10 @@ static int slb_base_page_shift[4] = {
20, /* 1M, unsupported */
};
/* When called from virtmode, this func should be protected by
* preempt_disable(), otherwise, the holding of HPTE_V_HVLOCK
* can trigger deadlock issue.
*/
long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr, unsigned long slb_v,
unsigned long valid)
{

23
arch/powerpc/kvm/book3s_hv_rmhandlers.S
View File

@ -153,7 +153,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206)
13: b machine_check_fwnmi
/*
* We come in here when wakened from nap mode on a secondary hw thread.
* Relocation is off and most register values are lost.
@ -224,6 +223,11 @@ kvm_start_guest:
/* Clear our vcpu pointer so we don't come back in early */
li r0, 0
std r0, HSTATE_KVM_VCPU(r13)
/*
* Make sure we clear HSTATE_KVM_VCPU(r13) before incrementing
* the nap_count, because once the increment to nap_count is
* visible we could be given another vcpu.
*/
lwsync
/* Clear any pending IPI - we're an offline thread */
ld r5, HSTATE_XICS_PHYS(r13)
@ -241,7 +245,6 @@ kvm_start_guest:
/* increment the nap count and then go to nap mode */
ld r4, HSTATE_KVM_VCORE(r13)
addi r4, r4, VCORE_NAP_COUNT
lwsync /* make previous updates visible */
51: lwarx r3, 0, r4
addi r3, r3, 1
stwcx. r3, 0, r4
@ -751,15 +754,14 @@ kvmppc_interrupt_hv:
* guest CR, R12 saved in shadow VCPU SCRATCH1/0
* guest R13 saved in SPRN_SCRATCH0
*/
/* abuse host_r2 as third scratch area; we get r2 from PACATOC(r13) */
std r9, HSTATE_HOST_R2(r13)
std r9, HSTATE_SCRATCH2(r13)
lbz r9, HSTATE_IN_GUEST(r13)
cmpwi r9, KVM_GUEST_MODE_HOST_HV
beq kvmppc_bad_host_intr
#ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
cmpwi r9, KVM_GUEST_MODE_GUEST
ld r9, HSTATE_HOST_R2(r13)
ld r9, HSTATE_SCRATCH2(r13)
beq kvmppc_interrupt_pr
#endif
/* We're now back in the host but in guest MMU context */
@ -779,7 +781,7 @@ kvmppc_interrupt_hv:
std r6, VCPU_GPR(R6)(r9)
std r7, VCPU_GPR(R7)(r9)
std r8, VCPU_GPR(R8)(r9)
ld r0, HSTATE_HOST_R2(r13)
ld r0, HSTATE_SCRATCH2(r13)
std r0, VCPU_GPR(R9)(r9)
std r10, VCPU_GPR(R10)(r9)
std r11, VCPU_GPR(R11)(r9)
@ -990,14 +992,13 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_201)
*/
/* Increment the threads-exiting-guest count in the 0xff00
bits of vcore->entry_exit_count */
lwsync
ld r5,HSTATE_KVM_VCORE(r13)
addi r6,r5,VCORE_ENTRY_EXIT
41: lwarx r3,0,r6
addi r0,r3,0x100
stwcx. r0,0,r6
bne 41b
lwsync
isync /* order stwcx. vs. reading napping_threads */
/*
* At this point we have an interrupt that we have to pass
@ -1030,6 +1031,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_201)
sld r0,r0,r4
andc. r3,r3,r0 /* no sense IPI'ing ourselves */
beq 43f
/* Order entry/exit update vs. IPIs */
sync
mulli r4,r4,PACA_SIZE /* get paca for thread 0 */
subf r6,r4,r13
42: andi. r0,r3,1
@ -1638,10 +1641,10 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_206)
bge kvm_cede_exit
stwcx. r4,0,r6
bne 31b
/* order napping_threads update vs testing entry_exit_count */
isync
li r0,1
stb r0,HSTATE_NAPPING(r13)
/* order napping_threads update vs testing entry_exit_count */
lwsync
mr r4,r3
lwz r7,VCORE_ENTRY_EXIT(r5)
cmpwi r7,0x100

19
arch/powerpc/kvm/book3s_interrupts.S
View File

@ -129,29 +129,32 @@ kvm_start_lightweight:
* R12 = exit handler id
* R13 = PACA
* SVCPU.* = guest *
* MSR.EE = 1
*
*/
PPC_LL r3, GPR4(r1) /* vcpu pointer */
/*
* kvmppc_copy_from_svcpu can clobber volatile registers, save
* the exit handler id to the vcpu and restore it from there later.
*/
stw r12, VCPU_TRAP(r3)
/* Transfer reg values from shadow vcpu back to vcpu struct */
/* On 64-bit, interrupts are still off at this point */
PPC_LL r3, GPR4(r1) /* vcpu pointer */
GET_SHADOW_VCPU(r4)
bl FUNC(kvmppc_copy_from_svcpu)
nop
#ifdef CONFIG_PPC_BOOK3S_64
/* Re-enable interrupts */
ld r3, HSTATE_HOST_MSR(r13)
ori r3, r3, MSR_EE
MTMSR_EERI(r3)
/*
* Reload kernel SPRG3 value.
* No need to save guest value as usermode can't modify SPRG3.
*/
ld r3, PACA_SPRG3(r13)
mtspr SPRN_SPRG3, r3
#endif /* CONFIG_PPC_BOOK3S_64 */
/* R7 = vcpu */
@ -177,7 +180,7 @@ kvm_start_lightweight:
PPC_STL r31, VCPU_GPR(R31)(r7)
/* Pass the exit number as 3rd argument to kvmppc_handle_exit */
mr r5, r12
lwz r5, VCPU_TRAP(r7)
/* Restore r3 (kvm_run) and r4 (vcpu) */
REST_2GPRS(3, r1)

22
arch/powerpc/kvm/book3s_pr.c
View File

@ -66,6 +66,7 @@ static void kvmppc_core_vcpu_load_pr(struct kvm_vcpu *vcpu, int cpu)
struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
memcpy(svcpu->slb, to_book3s(vcpu)->slb_shadow, sizeof(svcpu->slb));
svcpu->slb_max = to_book3s(vcpu)->slb_shadow_max;
svcpu->in_use = 0;
svcpu_put(svcpu);
#endif
vcpu->cpu = smp_processor_id();
@ -78,6 +79,9 @@ static void kvmppc_core_vcpu_put_pr(struct kvm_vcpu *vcpu)
{
#ifdef CONFIG_PPC_BOOK3S_64
struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
if (svcpu->in_use) {
kvmppc_copy_from_svcpu(vcpu, svcpu);
}
memcpy(to_book3s(vcpu)->slb_shadow, svcpu->slb, sizeof(svcpu->slb));
to_book3s(vcpu)->slb_shadow_max = svcpu->slb_max;
svcpu_put(svcpu);
@ -110,12 +114,26 @@ void kvmppc_copy_to_svcpu(struct kvmppc_book3s_shadow_vcpu *svcpu,
svcpu->ctr = vcpu->arch.ctr;
svcpu->lr = vcpu->arch.lr;
svcpu->pc = vcpu->arch.pc;
svcpu->in_use = true;
}
/* Copy data touched by real-mode code from shadow vcpu back to vcpu */
void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu,
struct kvmppc_book3s_shadow_vcpu *svcpu)
{
/*
* vcpu_put would just call us again because in_use hasn't
* been updated yet.
*/
preempt_disable();
/*
* Maybe we were already preempted and synced the svcpu from
* our preempt notifiers. Don't bother touching this svcpu then.
*/
if (!svcpu->in_use)
goto out;
vcpu->arch.gpr[0] = svcpu->gpr[0];
vcpu->arch.gpr[1] = svcpu->gpr[1];
vcpu->arch.gpr[2] = svcpu->gpr[2];
@ -139,6 +157,10 @@ void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu,
vcpu->arch.fault_dar = svcpu->fault_dar;
vcpu->arch.fault_dsisr = svcpu->fault_dsisr;
vcpu->arch.last_inst = svcpu->last_inst;
svcpu->in_use = false;
out:
preempt_enable();
}
static int kvmppc_core_check_requests_pr(struct kvm_vcpu *vcpu)

6
arch/powerpc/kvm/book3s_rmhandlers.S
View File

@ -153,15 +153,11 @@ _GLOBAL(kvmppc_entry_trampoline)
li r6, MSR_IR | MSR_DR
andc r6, r5, r6 /* Clear DR and IR in MSR value */
#ifdef CONFIG_PPC_BOOK3S_32
/*
* Set EE in HOST_MSR so that it's enabled when we get into our
* C exit handler function. On 64-bit we delay enabling
* interrupts until we have finished transferring stuff
* to or from the PACA.
* C exit handler function.
*/
ori r5, r5, MSR_EE
#endif
mtsrr0 r7
mtsrr1 r6
RFI

12
arch/powerpc/kvm/booke.c
View File

@ -681,7 +681,7 @@ int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
{
int ret, s;
struct thread_struct thread;
struct debug_reg debug;
#ifdef CONFIG_PPC_FPU
struct thread_fp_state fp;
int fpexc_mode;
@ -723,9 +723,9 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
#endif
/* Switch to guest debug context */
thread.debug = vcpu->arch.shadow_dbg_reg;
switch_booke_debug_regs(&thread);
thread.debug = current->thread.debug;
debug = vcpu->arch.shadow_dbg_reg;
switch_booke_debug_regs(&debug);
debug = current->thread.debug;
current->thread.debug = vcpu->arch.shadow_dbg_reg;
kvmppc_fix_ee_before_entry();
@ -736,8 +736,8 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
We also get here with interrupts enabled. */
/* Switch back to user space debug context */
switch_booke_debug_regs(&thread);
current->thread.debug = thread.debug;
switch_booke_debug_regs(&debug);
current->thread.debug = debug;
#ifdef CONFIG_PPC_FPU
kvmppc_save_guest_fp(vcpu);

12
arch/powerpc/platforms/powernv/opal-lpc.c
View File

@ -24,25 +24,25 @@ static int opal_lpc_chip_id = -1;
static u8 opal_lpc_inb(unsigned long port)
{
int64_t rc;
uint32_t data;
__be32 data;
if (opal_lpc_chip_id < 0 || port > 0xffff)
return 0xff;
rc = opal_lpc_read(opal_lpc_chip_id, OPAL_LPC_IO, port, &data, 1);
return rc ? 0xff : data;
return rc ? 0xff : be32_to_cpu(data);
}
static __le16 __opal_lpc_inw(unsigned long port)
{
int64_t rc;
uint32_t data;
__be32 data;
if (opal_lpc_chip_id < 0 || port > 0xfffe)
return 0xffff;
if (port & 1)
return (__le16)opal_lpc_inb(port) << 8 | opal_lpc_inb(port + 1);
rc = opal_lpc_read(opal_lpc_chip_id, OPAL_LPC_IO, port, &data, 2);
return rc ? 0xffff : data;
return rc ? 0xffff : be32_to_cpu(data);
}
static u16 opal_lpc_inw(unsigned long port)
{
@ -52,7 +52,7 @@ static u16 opal_lpc_inw(unsigned long port)
static __le32 __opal_lpc_inl(unsigned long port)
{
int64_t rc;
uint32_t data;
__be32 data;
if (opal_lpc_chip_id < 0 || port > 0xfffc)
return 0xffffffff;
@ -62,7 +62,7 @@ static __le32 __opal_lpc_inl(unsigned long port)
(__le32)opal_lpc_inb(port + 2) << 8 |
opal_lpc_inb(port + 3);
rc = opal_lpc_read(opal_lpc_chip_id, OPAL_LPC_IO, port, &data, 4);
return rc ? 0xffffffff : data;
return rc ? 0xffffffff : be32_to_cpu(data);
}
static u32 opal_lpc_inl(unsigned long port)

4
arch/powerpc/platforms/powernv/opal-xscom.c
View File

@ -96,9 +96,11 @@ static int opal_scom_read(scom_map_t map, u64 reg, u64 *value)
{
struct opal_scom_map *m = map;
int64_t rc;
__be64 v;
reg = opal_scom_unmangle(reg);
rc = opal_xscom_read(m->chip, m->addr + reg, (uint64_t *)__pa(value));
rc = opal_xscom_read(m->chip, m->addr + reg, (__be64 *)__pa(&v));
*value = be64_to_cpu(v);
return opal_xscom_err_xlate(rc);
}

12
arch/powerpc/platforms/pseries/lparcfg.c
View File

@ -157,7 +157,7 @@ static void parse_ppp_data(struct seq_file *m)
{
struct hvcall_ppp_data ppp_data;
struct device_node *root;
const int *perf_level;
const __be32 *perf_level;
int rc;
rc = h_get_ppp(&ppp_data);
@ -201,7 +201,7 @@ static void parse_ppp_data(struct seq_file *m)
perf_level = of_get_property(root,
"ibm,partition-performance-parameters-level",
NULL);
if (perf_level && (*perf_level >= 1)) {
if (perf_level && (be32_to_cpup(perf_level) >= 1)) {
seq_printf(m,
"physical_procs_allocated_to_virtualization=%d\n",
ppp_data.phys_platform_procs);
@ -435,7 +435,7 @@ static int pseries_lparcfg_data(struct seq_file *m, void *v)
int partition_potential_processors;
int partition_active_processors;
struct device_node *rtas_node;
const int *lrdrp = NULL;
const __be32 *lrdrp = NULL;
rtas_node = of_find_node_by_path("/rtas");
if (rtas_node)
@ -444,7 +444,7 @@ static int pseries_lparcfg_data(struct seq_file *m, void *v)
if (lrdrp == NULL) {
partition_potential_processors = vdso_data->processorCount;
} else {
partition_potential_processors = *(lrdrp + 4);
partition_potential_processors = be32_to_cpup(lrdrp + 4);
}
of_node_put(rtas_node);
@ -654,7 +654,7 @@ static int lparcfg_data(struct seq_file *m, void *v)
const char *model = "";
const char *system_id = "";
const char *tmp;
const unsigned int *lp_index_ptr;
const __be32 *lp_index_ptr;
unsigned int lp_index = 0;
seq_printf(m, "%s %s\n", MODULE_NAME, MODULE_VERS);
@ -670,7 +670,7 @@ static int lparcfg_data(struct seq_file *m, void *v)
lp_index_ptr = of_get_property(rootdn, "ibm,partition-no",
NULL);
if (lp_index_ptr)
lp_index = *lp_index_ptr;
lp_index = be32_to_cpup(lp_index_ptr);
of_node_put(rootdn);
}
seq_printf(m, "serial_number=%s\n", system_id);

28
arch/powerpc/platforms/pseries/msi.c
View File

@ -130,7 +130,8 @@ static int check_req(struct pci_dev *pdev, int nvec, char *prop_name)
{
struct device_node *dn;
struct pci_dn *pdn;
const u32 *req_msi;
const __be32 *p;
u32 req_msi;
pdn = pci_get_pdn(pdev);
if (!pdn)
@ -138,19 +139,20 @@ static int check_req(struct pci_dev *pdev, int nvec, char *prop_name)
dn = pdn->node;
req_msi = of_get_property(dn, prop_name, NULL);
if (!req_msi) {
p = of_get_property(dn, prop_name, NULL);
if (!p) {
pr_debug("rtas_msi: No %s on %s\n", prop_name, dn->full_name);
return -ENOENT;
}
if (*req_msi < nvec) {
req_msi = be32_to_cpup(p);
if (req_msi < nvec) {
pr_debug("rtas_msi: %s requests < %d MSIs\n", prop_name, nvec);
if (*req_msi == 0) /* Be paranoid */
if (req_msi == 0) /* Be paranoid */
return -ENOSPC;
return *req_msi;
return req_msi;
}
return 0;
@ -171,7 +173,7 @@ static int check_req_msix(struct pci_dev *pdev, int nvec)
static struct device_node *find_pe_total_msi(struct pci_dev *dev, int *total)
{
struct device_node *dn;
const u32 *p;
const __be32 *p;
dn = of_node_get(pci_device_to_OF_node(dev));
while (dn) {
@ -179,7 +181,7 @@ static struct device_node *find_pe_total_msi(struct pci_dev *dev, int *total)
if (p) {
pr_debug("rtas_msi: found prop on dn %s\n",
dn->full_name);
*total = *p;
*total = be32_to_cpup(p);
return dn;
}
@ -232,13 +234,13 @@ struct msi_counts {
static void *count_non_bridge_devices(struct device_node *dn, void *data)
{
struct msi_counts *counts = data;
const u32 *p;
const __be32 *p;
u32 class;
pr_debug("rtas_msi: counting %s\n", dn->full_name);
p = of_get_property(dn, "class-code", NULL);
class = p ? *p : 0;
class = p ? be32_to_cpup(p) : 0;
if ((class >> 8) != PCI_CLASS_BRIDGE_PCI)
counts->num_devices++;
@ -249,7 +251,7 @@ static void *count_non_bridge_devices(struct device_node *dn, void *data)
static void *count_spare_msis(struct device_node *dn, void *data)
{
struct msi_counts *counts = data;
const u32 *p;
const __be32 *p;
int req;
if (dn == counts->requestor)
@ -260,11 +262,11 @@ static void *count_spare_msis(struct device_node *dn, void *data)
req = 0;
p = of_get_property(dn, "ibm,req#msi", NULL);
if (p)
req = *p;
req = be32_to_cpup(p);
p = of_get_property(dn, "ibm,req#msi-x", NULL);
if (p)
req = max(req, (int)*p);
req = max(req, (int)be32_to_cpup(p));
}
if (req < counts->quota)

46
arch/powerpc/platforms/pseries/nvram.c
View File

@ -43,8 +43,8 @@ static char nvram_buf[NVRW_CNT]; /* assume this is in the first 4GB */
static DEFINE_SPINLOCK(nvram_lock);
struct err_log_info {
int error_type;
unsigned int seq_num;
__be32 error_type;
__be32 seq_num;
};
struct nvram_os_partition {
@ -79,9 +79,9 @@ static const char *pseries_nvram_os_partitions[] = {
};
struct oops_log_info {
u16 version;
u16 report_length;
u64 timestamp;
__be16 version;
__be16 report_length;
__be64 timestamp;
} __attribute__((packed));
static void oops_to_nvram(struct kmsg_dumper *dumper,
@ -291,8 +291,8 @@ int nvram_write_os_partition(struct nvram_os_partition *part, char * buff,
length = part->size;
}
info.error_type = err_type;
info.seq_num = error_log_cnt;
info.error_type = cpu_to_be32(err_type);
info.seq_num = cpu_to_be32(error_log_cnt);
tmp_index = part->index;
@ -364,8 +364,8 @@ int nvram_read_partition(struct nvram_os_partition *part, char *buff,
}
if (part->os_partition) {
*error_log_cnt = info.seq_num;
*err_type = info.error_type;
*error_log_cnt = be32_to_cpu(info.seq_num);
*err_type = be32_to_cpu(info.error_type);
}
return 0;
@ -529,9 +529,9 @@ static int zip_oops(size_t text_len)
pr_err("nvram: logging uncompressed oops/panic report\n");
return -1;
}
oops_hdr->version = OOPS_HDR_VERSION;
oops_hdr->report_length = (u16) zipped_len;
oops_hdr->timestamp = get_seconds();
oops_hdr->version = cpu_to_be16(OOPS_HDR_VERSION);
oops_hdr->report_length = cpu_to_be16(zipped_len);
oops_hdr->timestamp = cpu_to_be64(get_seconds());
return 0;
}
@ -574,9 +574,9 @@ static int nvram_pstore_write(enum pstore_type_id type,
clobbering_unread_rtas_event())
return -1;
oops_hdr->version = OOPS_HDR_VERSION;
oops_hdr->report_length = (u16) size;
oops_hdr->timestamp = get_seconds();
oops_hdr->version = cpu_to_be16(OOPS_HDR_VERSION);
oops_hdr->report_length = cpu_to_be16(size);
oops_hdr->timestamp = cpu_to_be64(get_seconds());
if (compressed)
err_type = ERR_TYPE_KERNEL_PANIC_GZ;
@ -670,16 +670,16 @@ static ssize_t nvram_pstore_read(u64 *id, enum pstore_type_id *type,
size_t length, hdr_size;
oops_hdr = (struct oops_log_info *)buff;
if (oops_hdr->version < OOPS_HDR_VERSION) {
if (be16_to_cpu(oops_hdr->version) < OOPS_HDR_VERSION) {
/* Old format oops header had 2-byte record size */
hdr_size = sizeof(u16);
length = oops_hdr->version;
length = be16_to_cpu(oops_hdr->version);
time->tv_sec = 0;
time->tv_nsec = 0;
} else {
hdr_size = sizeof(*oops_hdr);
length = oops_hdr->report_length;
time->tv_sec = oops_hdr->timestamp;
length = be16_to_cpu(oops_hdr->report_length);
time->tv_sec = be64_to_cpu(oops_hdr->timestamp);
time->tv_nsec = 0;
}
*buf = kmalloc(length, GFP_KERNEL);
@ -889,13 +889,13 @@ static void oops_to_nvram(struct kmsg_dumper *dumper,
kmsg_dump_get_buffer(dumper, false,
oops_data, oops_data_sz, &text_len);
err_type = ERR_TYPE_KERNEL_PANIC;
oops_hdr->version = OOPS_HDR_VERSION;
oops_hdr->report_length = (u16) text_len;
oops_hdr->timestamp = get_seconds();
oops_hdr->version = cpu_to_be16(OOPS_HDR_VERSION);
oops_hdr->report_length = cpu_to_be16(text_len);
oops_hdr->timestamp = cpu_to_be64(get_seconds());
}
(void) nvram_write_os_partition(&oops_log_partition, oops_buf,
(int) (sizeof(*oops_hdr) + oops_hdr->report_length), err_type,
(int) (sizeof(*oops_hdr) + text_len), err_type,
++oops_count);
spin_unlock_irqrestore(&lock, flags);

8
arch/powerpc/platforms/pseries/pci.c
View File

@ -113,7 +113,7 @@ int pseries_root_bridge_prepare(struct pci_host_bridge *bridge)
{
struct device_node *dn, *pdn;
struct pci_bus *bus;
const uint32_t *pcie_link_speed_stats;
const __be32 *pcie_link_speed_stats;
bus = bridge->bus;
@ -122,7 +122,7 @@ int pseries_root_bridge_prepare(struct pci_host_bridge *bridge)
return 0;
for (pdn = dn; pdn != NULL; pdn = of_get_next_parent(pdn)) {
pcie_link_speed_stats = (const uint32_t *) of_get_property(pdn,
pcie_link_speed_stats = of_get_property(pdn,
"ibm,pcie-link-speed-stats", NULL);
if (pcie_link_speed_stats)
break;
@ -135,7 +135,7 @@ int pseries_root_bridge_prepare(struct pci_host_bridge *bridge)
return 0;
}
switch (pcie_link_speed_stats[0]) {
switch (be32_to_cpup(pcie_link_speed_stats)) {
case 0x01:
bus->max_bus_speed = PCIE_SPEED_2_5GT;
break;
@ -147,7 +147,7 @@ int pseries_root_bridge_prepare(struct pci_host_bridge *bridge)
break;
}
switch (pcie_link_speed_stats[1]) {
switch (be32_to_cpup(pcie_link_speed_stats)) {
case 0x01:
bus->cur_bus_speed = PCIE_SPEED_2_5GT;
break;

2
arch/sh/lib/Makefile
View File

@ -6,7 +6,7 @@ lib-y = delay.o memmove.o memchr.o \
checksum.o strlen.o div64.o div64-generic.o
# Extracted from libgcc
lib-y += movmem.o ashldi3.o ashrdi3.o lshrdi3.o \
obj-y += movmem.o ashldi3.o ashrdi3.o lshrdi3.o \
ashlsi3.o ashrsi3.o ashiftrt.o lshrsi3.o \
udiv_qrnnd.o

4
arch/sparc/include/asm/pgtable_64.h
View File

@ -619,7 +619,7 @@ static inline unsigned long pte_present(pte_t pte)
}
#define pte_accessible pte_accessible
static inline unsigned long pte_accessible(pte_t a)
static inline unsigned long pte_accessible(struct mm_struct *mm, pte_t a)
{
return pte_val(a) & _PAGE_VALID;
}
@ -847,7 +847,7 @@ static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr,
* SUN4V NOTE: _PAGE_VALID is the same value in both the SUN4U
* and SUN4V pte layout, so this inline test is fine.
*/
if (likely(mm != &init_mm) && pte_accessible(orig))
if (likely(mm != &init_mm) && pte_accessible(mm, orig))
tlb_batch_add(mm, addr, ptep, orig, fullmm);
}

1
arch/x86/Kconfig
View File

@ -26,6 +26,7 @@ config X86
select HAVE_AOUT if X86_32
select HAVE_UNSTABLE_SCHED_CLOCK
select ARCH_SUPPORTS_NUMA_BALANCING
select ARCH_SUPPORTS_INT128 if X86_64
select ARCH_WANTS_PROT_NUMA_PROT_NONE
select HAVE_IDE
select HAVE_OPROFILE

11
arch/x86/include/asm/pgtable.h
View File

@ -452,9 +452,16 @@ static inline int pte_present(pte_t a)
}
#define pte_accessible pte_accessible
static inline int pte_accessible(pte_t a)
static inline bool pte_accessible(struct mm_struct *mm, pte_t a)
{
return pte_flags(a) & _PAGE_PRESENT;
if (pte_flags(a) & _PAGE_PRESENT)
return true;
if ((pte_flags(a) & (_PAGE_PROTNONE | _PAGE_NUMA)) &&
mm_tlb_flush_pending(mm))
return true;
return false;
}
static inline int pte_hidden(pte_t pte)

11
arch/x86/include/asm/preempt.h
View File

@ -7,6 +7,12 @@
DECLARE_PER_CPU(int, __preempt_count);
/*
* We use the PREEMPT_NEED_RESCHED bit as an inverted NEED_RESCHED such
* that a decrement hitting 0 means we can and should reschedule.
*/
#define PREEMPT_ENABLED (0 + PREEMPT_NEED_RESCHED)
/*
* We mask the PREEMPT_NEED_RESCHED bit so as not to confuse all current users
* that think a non-zero value indicates we cannot preempt.
@ -74,6 +80,11 @@ static __always_inline void __preempt_count_sub(int val)
__this_cpu_add_4(__preempt_count, -val);
}
/*
* Because we keep PREEMPT_NEED_RESCHED set when we do _not_ need to reschedule
* a decrement which hits zero means we have no preempt_count and should
* reschedule.
*/
static __always_inline bool __preempt_count_dec_and_test(void)
{
GEN_UNARY_RMWcc("decl", __preempt_count, __percpu_arg(0), "e");

3
arch/x86/kernel/cpu/intel.c
View File

@ -387,7 +387,8 @@ static void init_intel(struct cpuinfo_x86 *c)
set_cpu_cap(c, X86_FEATURE_PEBS);
}
if (c->x86 == 6 && c->x86_model == 29 && cpu_has_clflush)
if (c->x86 == 6 && cpu_has_clflush &&
(c->x86_model == 29 || c->x86_model == 46 || c->x86_model == 47))
set_cpu_cap(c, X86_FEATURE_CLFLUSH_MONITOR);
#ifdef CONFIG_X86_64

15
arch/x86/kernel/cpu/perf_event.h
View File

@ -262,11 +262,20 @@ struct cpu_hw_events {
__EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK, \
HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST_HSW)
#define EVENT_CONSTRAINT_END \
EVENT_CONSTRAINT(0, 0, 0)
/*
* We define the end marker as having a weight of -1
* to enable blacklisting of events using a counter bitmask
* of zero and thus a weight of zero.
* The end marker has a weight that cannot possibly be
* obtained from counting the bits in the bitmask.
*/
#define EVENT_CONSTRAINT_END { .weight = -1 }
/*
* Check for end marker with weight == -1
*/
#define for_each_event_constraint(e, c) \
for ((e) = (c); (e)->weight; (e)++)
for ((e) = (c); (e)->weight != -1; (e)++)
/*
* Extra registers for specific events.

13
arch/x86/mm/gup.c
View File

@ -83,6 +83,12 @@ static noinline int gup_pte_range(pmd_t pmd, unsigned long addr,
pte_t pte = gup_get_pte(ptep);
struct page *page;
/* Similar to the PMD case, NUMA hinting must take slow path */
if (pte_numa(pte)) {
pte_unmap(ptep);
return 0;
}
if ((pte_flags(pte) & (mask | _PAGE_SPECIAL)) != mask) {
pte_unmap(ptep);
return 0;
@ -167,6 +173,13 @@ static int gup_pmd_range(pud_t pud, unsigned long addr, unsigned long end,
if (pmd_none(pmd) || pmd_trans_splitting(pmd))
return 0;
if (unlikely(pmd_large(pmd))) {
/*
* NUMA hinting faults need to be handled in the GUP
* slowpath for accounting purposes and so that they
* can be serialised against THP migration.
*/
if (pmd_numa(pmd))
return 0;
if (!gup_huge_pmd(pmd, addr, next, write, pages, nr))
return 0;
} else {

13
block/blk-mq-sysfs.c
View File

@ -335,9 +335,22 @@ static struct kobj_type blk_mq_hw_ktype = {
void blk_mq_unregister_disk(struct gendisk *disk)
{
struct request_queue *q = disk->queue;
struct blk_mq_hw_ctx *hctx;
struct blk_mq_ctx *ctx;
int i, j;
queue_for_each_hw_ctx(q, hctx, i) {
hctx_for_each_ctx(hctx, ctx, j) {
kobject_del(&ctx->kobj);
kobject_put(&ctx->kobj);
}
kobject_del(&hctx->kobj);
kobject_put(&hctx->kobj);
}
kobject_uevent(&q->mq_kobj, KOBJ_REMOVE);
kobject_del(&q->mq_kobj);
kobject_put(&q->mq_kobj);
kobject_put(&disk_to_dev(disk)->kobj);
}

1
drivers/acpi/Kconfig
View File

@ -348,7 +348,6 @@ source "drivers/acpi/apei/Kconfig"
config ACPI_EXTLOG
tristate "Extended Error Log support"
depends on X86_MCE && X86_LOCAL_APIC
select EFI
select UEFI_CPER
default n
help

1
drivers/acpi/acpi_lpss.c
View File

@ -162,6 +162,7 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = {
{ "80860F14", (unsigned long)&byt_sdio_dev_desc },
{ "80860F41", (unsigned long)&byt_i2c_dev_desc },
{ "INT33B2", },
{ "INT33FC", },
{ "INT3430", (unsigned long)&lpt_dev_desc },
{ "INT3431", (unsigned long)&lpt_dev_desc },

1
drivers/acpi/apei/Kconfig
View File

@ -2,7 +2,6 @@ config ACPI_APEI
bool "ACPI Platform Error Interface (APEI)"
select MISC_FILESYSTEMS
select PSTORE
select EFI
select UEFI_CPER
depends on X86
help

1
drivers/acpi/apei/erst.c
View File

@ -942,6 +942,7 @@ static int erst_clearer(enum pstore_type_id type, u64 id, int count,
static struct pstore_info erst_info = {
.owner = THIS_MODULE,
.name = "erst",
.flags = PSTORE_FLAGS_FRAGILE,
.open = erst_open_pstore,
.close = erst_close_pstore,
.read = erst_reader,

18
drivers/ata/ahci.c
View File

@ -1238,15 +1238,6 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if (rc)
return rc;
/* AHCI controllers often implement SFF compatible interface.
* Grab all PCI BARs just in case.
*/
rc = pcim_iomap_regions_request_all(pdev, 1 << ahci_pci_bar, DRV_NAME);
if (rc == -EBUSY)
pcim_pin_device(pdev);
if (rc)
return rc;
if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
(pdev->device == 0x2652 || pdev->device == 0x2653)) {
u8 map;
@ -1263,6 +1254,15 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
}
}
/* AHCI controllers often implement SFF compatible interface.
* Grab all PCI BARs just in case.
*/
rc = pcim_iomap_regions_request_all(pdev, 1 << ahci_pci_bar, DRV_NAME);
if (rc == -EBUSY)
pcim_pin_device(pdev);
if (rc)
return rc;
hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
if (!hpriv)
return -ENOMEM;

3
drivers/ata/ahci_imx.c
View File

@ -113,7 +113,7 @@ static int imx6q_sata_init(struct device *dev, void __iomem *mmio)
/*
* set PHY Paremeters, two steps to configure the GPR13,
* one write for rest of parameters, mask of first write
* is 0x07fffffd, and the other one write for setting
* is 0x07ffffff, and the other one write for setting
* the mpll_clk_en.
*/
regmap_update_bits(imxpriv->gpr, 0x34, IMX6Q_GPR13_SATA_RX_EQ_VAL_MASK
@ -124,6 +124,7 @@ static int imx6q_sata_init(struct device *dev, void __iomem *mmio)
| IMX6Q_GPR13_SATA_TX_ATTEN_MASK
| IMX6Q_GPR13_SATA_TX_BOOST_MASK
| IMX6Q_GPR13_SATA_TX_LVL_MASK
| IMX6Q_GPR13_SATA_MPLL_CLK_EN
| IMX6Q_GPR13_SATA_TX_EDGE_RATE
, IMX6Q_GPR13_SATA_RX_EQ_VAL_3_0_DB
| IMX6Q_GPR13_SATA_RX_LOS_LVL_SATA2M

19
drivers/ata/libata-core.c
View File

@ -2149,9 +2149,16 @@ static int ata_dev_config_ncq(struct ata_device *dev,
"failed to get NCQ Send/Recv Log Emask 0x%x\n",
err_mask);
} else {
u8 *cmds = dev->ncq_send_recv_cmds;
dev->flags |= ATA_DFLAG_NCQ_SEND_RECV;
memcpy(dev->ncq_send_recv_cmds, ap->sector_buf,
ATA_LOG_NCQ_SEND_RECV_SIZE);
memcpy(cmds, ap->sector_buf, ATA_LOG_NCQ_SEND_RECV_SIZE);
if (dev->horkage & ATA_HORKAGE_NO_NCQ_TRIM) {
ata_dev_dbg(dev, "disabling queued TRIM support\n");
cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &=
~ATA_LOG_NCQ_SEND_RECV_DSM_TRIM;
}
}
}
@ -4156,6 +4163,9 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
{ "ST3320[68]13AS", "SD1[5-9]", ATA_HORKAGE_NONCQ |
ATA_HORKAGE_FIRMWARE_WARN },
/* Seagate Momentus SpinPoint M8 seem to have FPMDA_AA issues */
{ "ST1000LM024 HN-M101MBB", "2AR10001", ATA_HORKAGE_BROKEN_FPDMA_AA },
/* Blacklist entries taken from Silicon Image 3124/3132
Windows driver .inf file - also several Linux problem reports */
{ "HTS541060G9SA00", "MB3OC60D", ATA_HORKAGE_NONCQ, },
@ -4202,6 +4212,10 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
{ "PIONEER DVD-RW DVR-212D", NULL, ATA_HORKAGE_NOSETXFER },
{ "PIONEER DVD-RW DVR-216D", NULL, ATA_HORKAGE_NOSETXFER },
/* devices that don't properly handle queued TRIM commands */
{ "Micron_M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM, },
{ "Crucial_CT???M500SSD1", NULL, ATA_HORKAGE_NO_NCQ_TRIM, },
/* End Marker */
{ }
};
@ -6519,6 +6533,7 @@ static int __init ata_parse_force_one(char **cur,
{ "norst", .lflags = ATA_LFLAG_NO_HRST | ATA_LFLAG_NO_SRST },
{ "rstonce", .lflags = ATA_LFLAG_RST_ONCE },
{ "atapi_dmadir", .horkage_on = ATA_HORKAGE_ATAPI_DMADIR },
{ "disable", .horkage_on = ATA_HORKAGE_DISABLE },
};
char *start = *cur, *p = *cur;
char *id, *val, *endp;

21
drivers/ata/libata-scsi.c
View File

@ -3872,6 +3872,27 @@ void ata_scsi_hotplug(struct work_struct *work)
return;
}
/*
* XXX - UGLY HACK
*
* The block layer suspend/resume path is fundamentally broken due
* to freezable kthreads and workqueue and may deadlock if a block
* device gets removed while resume is in progress. I don't know
* what the solution is short of removing freezable kthreads and
* workqueues altogether.
*
* The following is an ugly hack to avoid kicking off device
* removal while freezer is active. This is a joke but does avoid
* this particular deadlock scenario.
*
* https://bugzilla.kernel.org/show_bug.cgi?id=62801
* http://marc.info/?l=linux-kernel&m=138695698516487
*/
#ifdef CONFIG_FREEZER
while (pm_freezing)
msleep(10);
#endif
DPRINTK("ENTER\n");
mutex_lock(&ap->scsi_scan_mutex);

102
drivers/block/null_blk.c
View File

@ -1,4 +1,5 @@
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/sched.h>
#include <linux/fs.h>
@ -65,7 +66,7 @@ enum {
NULL_Q_MQ = 2,
};
static int submit_queues = 1;
static int submit_queues;
module_param(submit_queues, int, S_IRUGO);
MODULE_PARM_DESC(submit_queues, "Number of submission queues");
@ -101,9 +102,9 @@ static int hw_queue_depth = 64;
module_param(hw_queue_depth, int, S_IRUGO);
MODULE_PARM_DESC(hw_queue_depth, "Queue depth for each hardware queue. Default: 64");
static bool use_per_node_hctx = true;
static bool use_per_node_hctx = false;
module_param(use_per_node_hctx, bool, S_IRUGO);
MODULE_PARM_DESC(use_per_node_hctx, "Use per-node allocation for hardware context queues. Default: true");
MODULE_PARM_DESC(use_per_node_hctx, "Use per-node allocation for hardware context queues. Default: false");
static void put_tag(struct nullb_queue *nq, unsigned int tag)
{
@ -346,8 +347,37 @@ static int null_queue_rq(struct blk_mq_hw_ctx *hctx, struct request *rq)
static struct blk_mq_hw_ctx *null_alloc_hctx(struct blk_mq_reg *reg, unsigned int hctx_index)
{
return kzalloc_node(sizeof(struct blk_mq_hw_ctx), GFP_KERNEL,
hctx_index);
int b_size = DIV_ROUND_UP(reg->nr_hw_queues, nr_online_nodes);
int tip = (reg->nr_hw_queues % nr_online_nodes);
int node = 0, i, n;
/*
* Split submit queues evenly wrt to the number of nodes. If uneven,
* fill the first buckets with one extra, until the rest is filled with
* no extra.
*/
for (i = 0, n = 1; i < hctx_index; i++, n++) {
if (n % b_size == 0) {
n = 0;
node++;
tip--;
if (!tip)
b_size = reg->nr_hw_queues / nr_online_nodes;
}
}
/*
* A node might not be online, therefore map the relative node id to the
* real node id.
*/
for_each_online_node(n) {
if (!node)
break;
node--;
}
return kzalloc_node(sizeof(struct blk_mq_hw_ctx), GFP_KERNEL, n);
}
static void null_free_hctx(struct blk_mq_hw_ctx *hctx, unsigned int hctx_index)
@ -355,16 +385,24 @@ static void null_free_hctx(struct blk_mq_hw_ctx *hctx, unsigned int hctx_index)
kfree(hctx);
}
static void null_init_queue(struct nullb *nullb, struct nullb_queue *nq)
{
BUG_ON(!nullb);
BUG_ON(!nq);
init_waitqueue_head(&nq->wait);
nq->queue_depth = nullb->queue_depth;
}
static int null_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,
unsigned int index)
{
struct nullb *nullb = data;
struct nullb_queue *nq = &nullb->queues[index];
init_waitqueue_head(&nq->wait);
nq->queue_depth = nullb->queue_depth;
nullb->nr_queues++;
hctx->driver_data = nq;
null_init_queue(nullb, nq);
nullb->nr_queues++;
return 0;
}
@ -417,13 +455,13 @@ static int setup_commands(struct nullb_queue *nq)
nq->cmds = kzalloc(nq->queue_depth * sizeof(*cmd), GFP_KERNEL);
if (!nq->cmds)
return 1;
return -ENOMEM;
tag_size = ALIGN(nq->queue_depth, BITS_PER_LONG) / BITS_PER_LONG;
nq->tag_map = kzalloc(tag_size * sizeof(unsigned long), GFP_KERNEL);
if (!nq->tag_map) {
kfree(nq->cmds);
return 1;
return -ENOMEM;
}
for (i = 0; i < nq->queue_depth; i++) {
@ -454,33 +492,37 @@ static void cleanup_queues(struct nullb *nullb)
static int setup_queues(struct nullb *nullb)
{
struct nullb_queue *nq;
int i;
nullb->queues = kzalloc(submit_queues * sizeof(*nq), GFP_KERNEL);
nullb->queues = kzalloc(submit_queues * sizeof(struct nullb_queue),
GFP_KERNEL);
if (!nullb->queues)
return 1;
return -ENOMEM;
nullb->nr_queues = 0;
nullb->queue_depth = hw_queue_depth;
if (queue_mode == NULL_Q_MQ)
return 0;
return 0;
}
static int init_driver_queues(struct nullb *nullb)
{
struct nullb_queue *nq;
int i, ret = 0;
for (i = 0; i < submit_queues; i++) {
nq = &nullb->queues[i];
init_waitqueue_head(&nq->wait);
nq->queue_depth = hw_queue_depth;
if (setup_commands(nq))
break;
null_init_queue(nullb, nq);
ret = setup_commands(nq);
if (ret)
goto err_queue;
nullb->nr_queues++;
}
if (i == submit_queues)
return 0;
return 0;
err_queue:
cleanup_queues(nullb);
return 1;
return ret;
}
static int null_add_dev(void)
@ -518,11 +560,13 @@ static int null_add_dev(void)
} else if (queue_mode == NULL_Q_BIO) {
nullb->q = blk_alloc_queue_node(GFP_KERNEL, home_node);
blk_queue_make_request(nullb->q, null_queue_bio);
init_driver_queues(nullb);
} else {
nullb->q = blk_init_queue_node(null_request_fn, &nullb->lock, home_node);
blk_queue_prep_rq(nullb->q, null_rq_prep_fn);
if (nullb->q)
blk_queue_softirq_done(nullb->q, null_softirq_done_fn);
init_driver_queues(nullb);
}
if (!nullb->q)
@ -579,7 +623,13 @@ static int __init null_init(void)
}
#endif
if (submit_queues > nr_cpu_ids)
if (queue_mode == NULL_Q_MQ && use_per_node_hctx) {
if (submit_queues < nr_online_nodes) {
pr_warn("null_blk: submit_queues param is set to %u.",
nr_online_nodes);
submit_queues = nr_online_nodes;
}
} else if (submit_queues > nr_cpu_ids)
submit_queues = nr_cpu_ids;
else if (!submit_queues)
submit_queues = 1;

4
drivers/block/skd_main.c
View File

@ -5269,7 +5269,7 @@ const char *skd_skdev_state_to_str(enum skd_drvr_state state)
}
}
const char *skd_skmsg_state_to_str(enum skd_fit_msg_state state)
static const char *skd_skmsg_state_to_str(enum skd_fit_msg_state state)
{
switch (state) {
case SKD_MSG_STATE_IDLE:
@ -5281,7 +5281,7 @@ const char *skd_skmsg_state_to_str(enum skd_fit_msg_state state)
}
}
const char *skd_skreq_state_to_str(enum skd_req_state state)
static const char *skd_skreq_state_to_str(enum skd_req_state state)
{
switch (state) {
case SKD_REQ_STATE_IDLE:

6
drivers/clk/clk-s2mps11.c
View File

@ -60,7 +60,7 @@ static int s2mps11_clk_prepare(struct clk_hw *hw)
struct s2mps11_clk *s2mps11 = to_s2mps11_clk(hw);
int ret;
ret = regmap_update_bits(s2mps11->iodev->regmap,
ret = regmap_update_bits(s2mps11->iodev->regmap_pmic,
S2MPS11_REG_RTC_CTRL,
s2mps11->mask, s2mps11->mask);
if (!ret)
@ -74,7 +74,7 @@ static void s2mps11_clk_unprepare(struct clk_hw *hw)
struct s2mps11_clk *s2mps11 = to_s2mps11_clk(hw);
int ret;
ret = regmap_update_bits(s2mps11->iodev->regmap, S2MPS11_REG_RTC_CTRL,
ret = regmap_update_bits(s2mps11->iodev->regmap_pmic, S2MPS11_REG_RTC_CTRL,
s2mps11->mask, ~s2mps11->mask);
if (!ret)
@ -174,7 +174,7 @@ static int s2mps11_clk_probe(struct platform_device *pdev)
s2mps11_clk->hw.init = &s2mps11_clks_init[i];
s2mps11_clk->mask = 1 << i;
ret = regmap_read(s2mps11_clk->iodev->regmap,
ret = regmap_read(s2mps11_clk->iodev->regmap_pmic,
S2MPS11_REG_RTC_CTRL, &val);
if (ret < 0)
goto err_reg;

1
drivers/clocksource/Kconfig
View File

@ -75,6 +75,7 @@ config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
config CLKSRC_EFM32
bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
select CLKSRC_MMIO
default ARCH_EFM32
help
Support to use the timers of EFM32 SoCs as clock source and clock

1
drivers/clocksource/clksrc-of.c
View File

@ -35,6 +35,5 @@ void __init clocksource_of_init(void)
init_func = match->data;
init_func(np);
of_node_put(np);
}
}

7
drivers/clocksource/dw_apb_timer_of.c
View File

@ -108,12 +108,11 @@ static void __init add_clocksource(struct device_node *source_timer)
static u64 read_sched_clock(void)
{
return __raw_readl(sched_io_base);
return ~__raw_readl(sched_io_base);
}
static const struct of_device_id sptimer_ids[] __initconst = {
{ .compatible = "picochip,pc3x2-rtc" },
{ .compatible = "snps,dw-apb-timer-sp" },
{ /* Sentinel */ },
};
@ -151,4 +150,6 @@ static void __init dw_apb_timer_init(struct device_node *timer)
num_called++;
}
CLOCKSOURCE_OF_DECLARE(pc3x2_timer, "picochip,pc3x2-timer", dw_apb_timer_init);
CLOCKSOURCE_OF_DECLARE(apb_timer, "snps,dw-apb-timer-osc", dw_apb_timer_init);
CLOCKSOURCE_OF_DECLARE(apb_timer_osc, "snps,dw-apb-timer-osc", dw_apb_timer_init);
CLOCKSOURCE_OF_DECLARE(apb_timer_sp, "snps,dw-apb-timer-sp", dw_apb_timer_init);
CLOCKSOURCE_OF_DECLARE(apb_timer, "snps,dw-apb-timer", dw_apb_timer_init);

3
drivers/clocksource/sun4i_timer.c
View File

@ -179,6 +179,9 @@ static void __init sun4i_timer_init(struct device_node *node)
writel(TIMER_CTL_CLK_SRC(TIMER_CTL_CLK_SRC_OSC24M),
timer_base + TIMER_CTL_REG(0));
/* Make sure timer is stopped before playing with interrupts */
sun4i_clkevt_time_stop(0);
ret = setup_irq(irq, &sun4i_timer_irq);
if (ret)
pr_warn("failed to setup irq %d\n", irq);

10
drivers/clocksource/time-armada-370-xp.c
View File

@ -255,11 +255,6 @@ static void __init armada_370_xp_timer_common_init(struct device_node *np)
ticks_per_jiffy = (timer_clk + HZ / 2) / HZ;
/*
* Set scale and timer for sched_clock.
*/
sched_clock_register(armada_370_xp_read_sched_clock, 32, timer_clk);
/*
* Setup free-running clocksource timer (interrupts
* disabled).
@ -270,6 +265,11 @@ static void __init armada_370_xp_timer_common_init(struct device_node *np)
timer_ctrl_clrset(0, TIMER0_EN | TIMER0_RELOAD_EN |
TIMER0_DIV(TIMER_DIVIDER_SHIFT));
/*
* Set scale and timer for sched_clock.
*/
sched_clock_register(armada_370_xp_read_sched_clock, 32, timer_clk);
clocksource_mmio_init(timer_base + TIMER0_VAL_OFF,
"armada_370_xp_clocksource",
timer_clk, 300, 32, clocksource_mmio_readl_down);

69
drivers/cpufreq/cpufreq.c
View File

@ -828,6 +828,12 @@ static void cpufreq_init_policy(struct cpufreq_policy *policy)
int ret = 0;
memcpy(&new_policy, policy, sizeof(*policy));
/* Use the default policy if its valid. */
if (cpufreq_driver->setpolicy)
cpufreq_parse_governor(policy->governor->name,
&new_policy.policy, NULL);
/* assure that the starting sequence is run in cpufreq_set_policy */
policy->governor = NULL;
@ -845,8 +851,7 @@ static void cpufreq_init_policy(struct cpufreq_policy *policy)
#ifdef CONFIG_HOTPLUG_CPU
static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy,
unsigned int cpu, struct device *dev,
bool frozen)
unsigned int cpu, struct device *dev)
{
int ret = 0;
unsigned long flags;
@ -877,11 +882,7 @@ static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy,
}
}
/* Don't touch sysfs links during light-weight init */
if (!frozen)
ret = sysfs_create_link(&dev->kobj, &policy->kobj, "cpufreq");
return ret;
return sysfs_create_link(&dev->kobj, &policy->kobj, "cpufreq");
}
#endif
@ -926,6 +927,27 @@ err_free_policy:
return NULL;
}
static void cpufreq_policy_put_kobj(struct cpufreq_policy *policy)
{
struct kobject *kobj;
struct completion *cmp;
down_read(&policy->rwsem);
kobj = &policy->kobj;
cmp = &policy->kobj_unregister;
up_read(&policy->rwsem);
kobject_put(kobj);
/*
* We need to make sure that the underlying kobj is
* actually not referenced anymore by anybody before we
* proceed with unloading.
*/
pr_debug("waiting for dropping of refcount\n");
wait_for_completion(cmp);
pr_debug("wait complete\n");
}
static void cpufreq_policy_free(struct cpufreq_policy *policy)
{
free_cpumask_var(policy->related_cpus);
@ -986,7 +1008,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
list_for_each_entry(tpolicy, &cpufreq_policy_list, policy_list) {
if (cpumask_test_cpu(cpu, tpolicy->related_cpus)) {
read_unlock_irqrestore(&cpufreq_driver_lock, flags);
ret = cpufreq_add_policy_cpu(tpolicy, cpu, dev, frozen);
ret = cpufreq_add_policy_cpu(tpolicy, cpu, dev);
up_read(&cpufreq_rwsem);
return ret;
}
@ -1096,7 +1118,10 @@ err_get_freq:
if (cpufreq_driver->exit)
cpufreq_driver->exit(policy);
err_set_policy_cpu:
if (frozen)
cpufreq_policy_put_kobj(policy);
cpufreq_policy_free(policy);
nomem_out:
up_read(&cpufreq_rwsem);
@ -1118,7 +1143,7 @@ static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
}
static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy,
unsigned int old_cpu, bool frozen)
unsigned int old_cpu)
{
struct device *cpu_dev;
int ret;
@ -1126,10 +1151,6 @@ static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy,
/* first sibling now owns the new sysfs dir */
cpu_dev = get_cpu_device(cpumask_any_but(policy->cpus, old_cpu));
/* Don't touch sysfs files during light-weight tear-down */
if (frozen)
return cpu_dev->id;
sysfs_remove_link(&cpu_dev->kobj, "cpufreq");
ret = kobject_move(&policy->kobj, &cpu_dev->kobj);
if (ret) {
@ -1196,7 +1217,7 @@ static int __cpufreq_remove_dev_prepare(struct device *dev,
if (!frozen)
sysfs_remove_link(&dev->kobj, "cpufreq");
} else if (cpus > 1) {
new_cpu = cpufreq_nominate_new_policy_cpu(policy, cpu, frozen);
new_cpu = cpufreq_nominate_new_policy_cpu(policy, cpu);
if (new_cpu >= 0) {
update_policy_cpu(policy, new_cpu);
@ -1218,8 +1239,6 @@ static int __cpufreq_remove_dev_finish(struct device *dev,
int ret;
unsigned long flags;
struct cpufreq_policy *policy;
struct kobject *kobj;
struct completion *cmp;
read_lock_irqsave(&cpufreq_driver_lock, flags);
policy = per_cpu(cpufreq_cpu_data, cpu);
@ -1249,22 +1268,8 @@ static int __cpufreq_remove_dev_finish(struct device *dev,
}
}
if (!frozen) {
down_read(&policy->rwsem);
kobj = &policy->kobj;
cmp = &policy->kobj_unregister;
up_read(&policy->rwsem);
kobject_put(kobj);
/*
* We need to make sure that the underlying kobj is
* actually not referenced anymore by anybody before we
* proceed with unloading.
*/
pr_debug("waiting for dropping of refcount\n");
wait_for_completion(cmp);
pr_debug("wait complete\n");
}
if (!frozen)
cpufreq_policy_put_kobj(policy);
/*
* Perform the ->exit() even during light-weight tear-down,

7
drivers/dma/Kconfig
View File

@ -62,6 +62,7 @@ config INTEL_IOATDMA
tristate "Intel I/OAT DMA support"
depends on PCI && X86
select DMA_ENGINE
select DMA_ENGINE_RAID
select DCA
help
Enable support for the Intel(R) I/OAT DMA engine present
@ -112,6 +113,7 @@ config MV_XOR
bool "Marvell XOR engine support"
depends on PLAT_ORION
select DMA_ENGINE
select DMA_ENGINE_RAID
select ASYNC_TX_ENABLE_CHANNEL_SWITCH
---help---
Enable support for the Marvell XOR engine.
@ -187,6 +189,7 @@ config AMCC_PPC440SPE_ADMA
tristate "AMCC PPC440SPe ADMA support"
depends on 440SPe || 440SP
select DMA_ENGINE
select DMA_ENGINE_RAID
select ARCH_HAS_ASYNC_TX_FIND_CHANNEL
select ASYNC_TX_ENABLE_CHANNEL_SWITCH
help
@ -352,6 +355,7 @@ config NET_DMA
bool "Network: TCP receive copy offload"
depends on DMA_ENGINE && NET
default (INTEL_IOATDMA || FSL_DMA)
depends on BROKEN
help
This enables the use of DMA engines in the network stack to
offload receive copy-to-user operations, freeing CPU cycles.
@ -377,4 +381,7 @@ config DMATEST
Simple DMA test client. Say N unless you're debugging a
DMA Device driver.
config DMA_ENGINE_RAID
bool
endif

4
drivers/dma/at_hdmac_regs.h
View File

@ -347,10 +347,6 @@ static struct device *chan2dev(struct dma_chan *chan)
{
return &chan->dev->device;
}
static struct device *chan2parent(struct dma_chan *chan)
{
return chan->dev->device.parent;
}
#if defined(VERBOSE_DEBUG)
static void vdbg_dump_regs(struct at_dma_chan *atchan)

4
drivers/dma/dmaengine.c
View File

@ -912,7 +912,7 @@ struct dmaengine_unmap_pool {
#define __UNMAP_POOL(x) { .size = x, .name = "dmaengine-unmap-" __stringify(x) }
static struct dmaengine_unmap_pool unmap_pool[] = {
__UNMAP_POOL(2),
#if IS_ENABLED(CONFIG_ASYNC_TX_DMA)
#if IS_ENABLED(CONFIG_DMA_ENGINE_RAID)
__UNMAP_POOL(16),
__UNMAP_POOL(128),
__UNMAP_POOL(256),
@ -1054,7 +1054,7 @@ dma_async_memcpy_pg_to_pg(struct dma_chan *chan, struct page *dest_pg,
dma_cookie_t cookie;
unsigned long flags;
unmap = dmaengine_get_unmap_data(dev->dev, 2, GFP_NOIO);
unmap = dmaengine_get_unmap_data(dev->dev, 2, GFP_NOWAIT);
if (!unmap)
return -ENOMEM;

8
drivers/dma/dmatest.c
View File

@ -539,9 +539,9 @@ static int dmatest_func(void *data)
um->len = params->buf_size;
for (i = 0; i < src_cnt; i++) {
unsigned long buf = (unsigned long) thread->srcs[i];
void *buf = thread->srcs[i];
struct page *pg = virt_to_page(buf);
unsigned pg_off = buf & ~PAGE_MASK;
unsigned pg_off = (unsigned long) buf & ~PAGE_MASK;
um->addr[i] = dma_map_page(dev->dev, pg, pg_off,
um->len, DMA_TO_DEVICE);
@ -559,9 +559,9 @@ static int dmatest_func(void *data)
/* map with DMA_BIDIRECTIONAL to force writeback/invalidate */
dsts = &um->addr[src_cnt];
for (i = 0; i < dst_cnt; i++) {
unsigned long buf = (unsigned long) thread->dsts[i];
void *buf = thread->dsts[i];
struct page *pg = virt_to_page(buf);
unsigned pg_off = buf & ~PAGE_MASK;
unsigned pg_off = (unsigned long) buf & ~PAGE_MASK;
dsts[i] = dma_map_page(dev->dev, pg, pg_off, um->len,
DMA_BIDIRECTIONAL);

31
drivers/dma/fsldma.c
View File

@ -86,11 +86,6 @@ static void set_desc_cnt(struct fsldma_chan *chan,
hw->count = CPU_TO_DMA(chan, count, 32);
}
static u32 get_desc_cnt(struct fsldma_chan *chan, struct fsl_desc_sw *desc)
{
return DMA_TO_CPU(chan, desc->hw.count, 32);
}
static void set_desc_src(struct fsldma_chan *chan,
struct fsl_dma_ld_hw *hw, dma_addr_t src)
{
@ -101,16 +96,6 @@ static void set_desc_src(struct fsldma_chan *chan,
hw->src_addr = CPU_TO_DMA(chan, snoop_bits | src, 64);
}
static dma_addr_t get_desc_src(struct fsldma_chan *chan,
struct fsl_desc_sw *desc)
{
u64 snoop_bits;
snoop_bits = ((chan->feature & FSL_DMA_IP_MASK) == FSL_DMA_IP_85XX)
? ((u64)FSL_DMA_SATR_SREADTYPE_SNOOP_READ << 32) : 0;
return DMA_TO_CPU(chan, desc->hw.src_addr, 64) & ~snoop_bits;
}
static void set_desc_dst(struct fsldma_chan *chan,
struct fsl_dma_ld_hw *hw, dma_addr_t dst)
{
@ -121,16 +106,6 @@ static void set_desc_dst(struct fsldma_chan *chan,
hw->dst_addr = CPU_TO_DMA(chan, snoop_bits | dst, 64);
}
static dma_addr_t get_desc_dst(struct fsldma_chan *chan,
struct fsl_desc_sw *desc)
{
u64 snoop_bits;
snoop_bits = ((chan->feature & FSL_DMA_IP_MASK) == FSL_DMA_IP_85XX)
? ((u64)FSL_DMA_DATR_DWRITETYPE_SNOOP_WRITE << 32) : 0;
return DMA_TO_CPU(chan, desc->hw.dst_addr, 64) & ~snoop_bits;
}
static void set_desc_next(struct fsldma_chan *chan,
struct fsl_dma_ld_hw *hw, dma_addr_t next)
{
@ -408,7 +383,7 @@ static dma_cookie_t fsl_dma_tx_submit(struct dma_async_tx_descriptor *tx)
struct fsl_desc_sw *desc = tx_to_fsl_desc(tx);
struct fsl_desc_sw *child;
unsigned long flags;
dma_cookie_t cookie;
dma_cookie_t cookie = -EINVAL;
spin_lock_irqsave(&chan->desc_lock, flags);
@ -854,10 +829,6 @@ static void fsldma_cleanup_descriptor(struct fsldma_chan *chan,
struct fsl_desc_sw *desc)
{
struct dma_async_tx_descriptor *txd = &desc->async_tx;
struct device *dev = chan->common.device->dev;
dma_addr_t src = get_desc_src(chan, desc);
dma_addr_t dst = get_desc_dst(chan, desc);
u32 len = get_desc_cnt(chan, desc);
/* Run the link descriptor callback function */
if (txd->callback) {

103
drivers/dma/mv_xor.c
View File

@ -54,12 +54,6 @@ static void mv_desc_init(struct mv_xor_desc_slot *desc, unsigned long flags)
hw_desc->desc_command = (1 << 31);
}
static u32 mv_desc_get_dest_addr(struct mv_xor_desc_slot *desc)
{
struct mv_xor_desc *hw_desc = desc->hw_desc;
return hw_desc->phy_dest_addr;
}
static void mv_desc_set_byte_count(struct mv_xor_desc_slot *desc,
u32 byte_count)
{
@ -787,7 +781,6 @@ static void mv_xor_issue_pending(struct dma_chan *chan)
/*
* Perform a transaction to verify the HW works.
*/
#define MV_XOR_TEST_SIZE 2000
static int mv_xor_memcpy_self_test(struct mv_xor_chan *mv_chan)
{
@ -797,20 +790,21 @@ static int mv_xor_memcpy_self_test(struct mv_xor_chan *mv_chan)
struct dma_chan *dma_chan;
dma_cookie_t cookie;
struct dma_async_tx_descriptor *tx;
struct dmaengine_unmap_data *unmap;
int err = 0;
src = kmalloc(sizeof(u8) * MV_XOR_TEST_SIZE, GFP_KERNEL);
src = kmalloc(sizeof(u8) * PAGE_SIZE, GFP_KERNEL);
if (!src)
return -ENOMEM;
dest = kzalloc(sizeof(u8) * MV_XOR_TEST_SIZE, GFP_KERNEL);
dest = kzalloc(sizeof(u8) * PAGE_SIZE, GFP_KERNEL);
if (!dest) {
kfree(src);
return -ENOMEM;
}
/* Fill in src buffer */
for (i = 0; i < MV_XOR_TEST_SIZE; i++)
for (i = 0; i < PAGE_SIZE; i++)
((u8 *) src)[i] = (u8)i;
dma_chan = &mv_chan->dmachan;
@ -819,14 +813,26 @@ static int mv_xor_memcpy_self_test(struct mv_xor_chan *mv_chan)
goto out;
}
dest_dma = dma_map_single(dma_chan->device->dev, dest,
MV_XOR_TEST_SIZE, DMA_FROM_DEVICE);
unmap = dmaengine_get_unmap_data(dma_chan->device->dev, 2, GFP_KERNEL);
if (!unmap) {
err = -ENOMEM;
goto free_resources;
}
src_dma = dma_map_single(dma_chan->device->dev, src,
MV_XOR_TEST_SIZE, DMA_TO_DEVICE);
src_dma = dma_map_page(dma_chan->device->dev, virt_to_page(src), 0,
PAGE_SIZE, DMA_TO_DEVICE);
unmap->to_cnt = 1;
unmap->addr[0] = src_dma;
dest_dma = dma_map_page(dma_chan->device->dev, virt_to_page(dest), 0,
PAGE_SIZE, DMA_FROM_DEVICE);
unmap->from_cnt = 1;
unmap->addr[1] = dest_dma;
unmap->len = PAGE_SIZE;
tx = mv_xor_prep_dma_memcpy(dma_chan, dest_dma, src_dma,
MV_XOR_TEST_SIZE, 0);
PAGE_SIZE, 0);
cookie = mv_xor_tx_submit(tx);
mv_xor_issue_pending(dma_chan);
async_tx_ack(tx);
@ -841,8 +847,8 @@ static int mv_xor_memcpy_self_test(struct mv_xor_chan *mv_chan)
}
dma_sync_single_for_cpu(dma_chan->device->dev, dest_dma,
MV_XOR_TEST_SIZE, DMA_FROM_DEVICE);
if (memcmp(src, dest, MV_XOR_TEST_SIZE)) {
PAGE_SIZE, DMA_FROM_DEVICE);
if (memcmp(src, dest, PAGE_SIZE)) {
dev_err(dma_chan->device->dev,
"Self-test copy failed compare, disabling\n");
err = -ENODEV;
@ -850,6 +856,7 @@ static int mv_xor_memcpy_self_test(struct mv_xor_chan *mv_chan)
}
free_resources:
dmaengine_unmap_put(unmap);
mv_xor_free_chan_resources(dma_chan);
out:
kfree(src);
@ -867,13 +874,15 @@ mv_xor_xor_self_test(struct mv_xor_chan *mv_chan)
dma_addr_t dma_srcs[MV_XOR_NUM_SRC_TEST];
dma_addr_t dest_dma;
struct dma_async_tx_descriptor *tx;
struct dmaengine_unmap_data *unmap;
struct dma_chan *dma_chan;
dma_cookie_t cookie;
u8 cmp_byte = 0;
u32 cmp_word;
int err = 0;
int src_count = MV_XOR_NUM_SRC_TEST;
for (src_idx = 0; src_idx < MV_XOR_NUM_SRC_TEST; src_idx++) {
for (src_idx = 0; src_idx < src_count; src_idx++) {
xor_srcs[src_idx] = alloc_page(GFP_KERNEL);
if (!xor_srcs[src_idx]) {
while (src_idx--)
@ -890,13 +899,13 @@ mv_xor_xor_self_test(struct mv_xor_chan *mv_chan)
}
/* Fill in src buffers */
for (src_idx = 0; src_idx < MV_XOR_NUM_SRC_TEST; src_idx++) {
for (src_idx = 0; src_idx < src_count; src_idx++) {
u8 *ptr = page_address(xor_srcs[src_idx]);
for (i = 0; i < PAGE_SIZE; i++)
ptr[i] = (1 << src_idx);
}
for (src_idx = 0; src_idx < MV_XOR_NUM_SRC_TEST; src_idx++)
for (src_idx = 0; src_idx < src_count; src_idx++)
cmp_byte ^= (u8) (1 << src_idx);
cmp_word = (cmp_byte << 24) | (cmp_byte << 16) |
@ -910,16 +919,29 @@ mv_xor_xor_self_test(struct mv_xor_chan *mv_chan)
goto out;
}
/* test xor */
dest_dma = dma_map_page(dma_chan->device->dev, dest, 0, PAGE_SIZE,
DMA_FROM_DEVICE);
unmap = dmaengine_get_unmap_data(dma_chan->device->dev, src_count + 1,
GFP_KERNEL);
if (!unmap) {
err = -ENOMEM;
goto free_resources;
}
for (i = 0; i < MV_XOR_NUM_SRC_TEST; i++)
dma_srcs[i] = dma_map_page(dma_chan->device->dev, xor_srcs[i],
0, PAGE_SIZE, DMA_TO_DEVICE);
/* test xor */
for (i = 0; i < src_count; i++) {
unmap->addr[i] = dma_map_page(dma_chan->device->dev, xor_srcs[i],
0, PAGE_SIZE, DMA_TO_DEVICE);
dma_srcs[i] = unmap->addr[i];
unmap->to_cnt++;
}
unmap->addr[src_count] = dma_map_page(dma_chan->device->dev, dest, 0, PAGE_SIZE,
DMA_FROM_DEVICE);
dest_dma = unmap->addr[src_count];
unmap->from_cnt = 1;
unmap->len = PAGE_SIZE;
tx = mv_xor_prep_dma_xor(dma_chan, dest_dma, dma_srcs,
MV_XOR_NUM_SRC_TEST, PAGE_SIZE, 0);
src_count, PAGE_SIZE, 0);
cookie = mv_xor_tx_submit(tx);
mv_xor_issue_pending(dma_chan);
@ -948,9 +970,10 @@ mv_xor_xor_self_test(struct mv_xor_chan *mv_chan)
}
free_resources:
dmaengine_unmap_put(unmap);
mv_xor_free_chan_resources(dma_chan);
out:
src_idx = MV_XOR_NUM_SRC_TEST;
src_idx = src_count;
while (src_idx--)
__free_page(xor_srcs[src_idx]);
__free_page(dest);
@ -1176,6 +1199,7 @@ static int mv_xor_probe(struct platform_device *pdev)
int i = 0;
for_each_child_of_node(pdev->dev.of_node, np) {
struct mv_xor_chan *chan;
dma_cap_mask_t cap_mask;
int irq;
@ -1193,21 +1217,21 @@ static int mv_xor_probe(struct platform_device *pdev)
goto err_channel_add;
}
xordev->channels[i] =
mv_xor_channel_add(xordev, pdev, i,
cap_mask, irq);
if (IS_ERR(xordev->channels[i])) {
ret = PTR_ERR(xordev->channels[i]);
xordev->channels[i] = NULL;
chan = mv_xor_channel_add(xordev, pdev, i,
cap_mask, irq);
if (IS_ERR(chan)) {
ret = PTR_ERR(chan);
irq_dispose_mapping(irq);
goto err_channel_add;
}
xordev->channels[i] = chan;
i++;
}
} else if (pdata && pdata->channels) {
for (i = 0; i < MV_XOR_MAX_CHANNELS; i++) {
struct mv_xor_channel_data *cd;
struct mv_xor_chan *chan;
int irq;
cd = &pdata->channels[i];
@ -1222,13 +1246,14 @@ static int mv_xor_probe(struct platform_device *pdev)
goto err_channel_add;
}
xordev->channels[i] =
mv_xor_channel_add(xordev, pdev, i,
cd->cap_mask, irq);
if (IS_ERR(xordev->channels[i])) {
ret = PTR_ERR(xordev->channels[i]);
chan = mv_xor_channel_add(xordev, pdev, i,
cd->cap_mask, irq);
if (IS_ERR(chan)) {
ret = PTR_ERR(chan);
goto err_channel_add;
}
xordev->channels[i] = chan;
}
}

5
drivers/dma/pl330.c
View File

@ -2492,12 +2492,9 @@ static dma_cookie_t pl330_tx_submit(struct dma_async_tx_descriptor *tx)
static inline void _init_desc(struct dma_pl330_desc *desc)
{
desc->pchan = NULL;
desc->req.x = &desc->px;
desc->req.token = desc;
desc->rqcfg.swap = SWAP_NO;
desc->rqcfg.privileged = 0;
desc->rqcfg.insnaccess = 0;
desc->rqcfg.scctl = SCCTRL0;
desc->rqcfg.dcctl = DCCTRL0;
desc->req.cfg = &desc->rqcfg;
@ -2517,7 +2514,7 @@ static int add_desc(struct dma_pl330_dmac *pdmac, gfp_t flg, int count)
if (!pdmac)
return 0;
desc = kmalloc(count * sizeof(*desc), flg);
desc = kcalloc(count, sizeof(*desc), flg);
if (!desc)
return 0;

27
drivers/dma/ppc4xx/adma.c
View File

@ -532,29 +532,6 @@ static void ppc440spe_desc_init_memcpy(struct ppc440spe_adma_desc_slot *desc,
hw_desc->opc = DMA_CDB_OPC_MV_SG1_SG2;
}
/**
* ppc440spe_desc_init_memset - initialize the descriptor for MEMSET operation
*/
static void ppc440spe_desc_init_memset(struct ppc440spe_adma_desc_slot *desc,
int value, unsigned long flags)
{
struct dma_cdb *hw_desc = desc->hw_desc;
memset(desc->hw_desc, 0, sizeof(struct dma_cdb));
desc->hw_next = NULL;
desc->src_cnt = 1;
desc->dst_cnt = 1;
if (flags & DMA_PREP_INTERRUPT)
set_bit(PPC440SPE_DESC_INT, &desc->flags);
else
clear_bit(PPC440SPE_DESC_INT, &desc->flags);
hw_desc->sg1u = hw_desc->sg1l = cpu_to_le32((u32)value);
hw_desc->sg3u = hw_desc->sg3l = cpu_to_le32((u32)value);
hw_desc->opc = DMA_CDB_OPC_DFILL128;
}
/**
* ppc440spe_desc_set_src_addr - set source address into the descriptor
*/
@ -1504,8 +1481,6 @@ static dma_cookie_t ppc440spe_adma_run_tx_complete_actions(
struct ppc440spe_adma_chan *chan,
dma_cookie_t cookie)
{
int i;
BUG_ON(desc->async_tx.cookie < 0);
if (desc->async_tx.cookie > 0) {
cookie = desc->async_tx.cookie;
@ -3898,7 +3873,7 @@ static void ppc440spe_adma_init_capabilities(struct ppc440spe_adma_device *adev)
ppc440spe_adma_prep_dma_interrupt;
}
pr_info("%s: AMCC(R) PPC440SP(E) ADMA Engine: "
"( %s%s%s%s%s%s%s)\n",
"( %s%s%s%s%s%s)\n",
dev_name(adev->dev),
dma_has_cap(DMA_PQ, adev->common.cap_mask) ? "pq " : "",
dma_has_cap(DMA_PQ_VAL, adev->common.cap_mask) ? "pq_val " : "",

1
drivers/dma/txx9dmac.c
View File

@ -406,7 +406,6 @@ txx9dmac_descriptor_complete(struct txx9dmac_chan *dc,
dma_async_tx_callback callback;
void *param;
struct dma_async_tx_descriptor *txd = &desc->txd;
struct txx9dmac_slave *ds = dc->chan.private;
dev_vdbg(chan2dev(&dc->chan), "descriptor %u %p complete\n",
txd->cookie, desc);

1
drivers/firewire/sbp2.c
View File

@ -1623,7 +1623,6 @@ static struct scsi_host_template scsi_driver_template = {
.cmd_per_lun = 1,
.can_queue = 1,
.sdev_attrs = sbp2_scsi_sysfs_attrs,
.no_write_same = 1,
};
MODULE_AUTHOR("Kristian Hoegsberg <krh@bitplanet.net>");

1
drivers/firmware/Makefile
View File

@ -14,3 +14,4 @@ obj-$(CONFIG_FIRMWARE_MEMMAP) += memmap.o
obj-$(CONFIG_GOOGLE_FIRMWARE) += google/
obj-$(CONFIG_EFI) += efi/
obj-$(CONFIG_UEFI_CPER) += efi/

6
drivers/firmware/efi/Kconfig
View File

@ -36,7 +36,7 @@ config EFI_VARS_PSTORE_DEFAULT_DISABLE
backend for pstore by default. This setting can be overridden
using the efivars module's pstore_disable parameter.
config UEFI_CPER
def_bool n
endmenu
config UEFI_CPER
bool

2
drivers/firmware/efi/Makefile
View File

@ -1,7 +1,7 @@
#
# Makefile for linux kernel
#
obj-y += efi.o vars.o
obj-$(CONFIG_EFI) += efi.o vars.o
obj-$(CONFIG_EFI_VARS) += efivars.o
obj-$(CONFIG_EFI_VARS_PSTORE) += efi-pstore.o
obj-$(CONFIG_UEFI_CPER) += cper.o

1
drivers/firmware/efi/efi-pstore.c
View File

@ -356,6 +356,7 @@ static int efi_pstore_erase(enum pstore_type_id type, u64 id, int count,
static struct pstore_info efi_pstore_info = {
.owner = THIS_MODULE,
.name = "efi",
.flags = PSTORE_FLAGS_FRAGILE,
.open = efi_pstore_open,
.close = efi_pstore_close,
.read = efi_pstore_read,

4
drivers/gpio/gpio-msm-v2.c
View File

@ -252,7 +252,7 @@ static void msm_gpio_irq_mask(struct irq_data *d)
spin_lock_irqsave(&tlmm_lock, irq_flags);
writel(TARGET_PROC_NONE, GPIO_INTR_CFG_SU(gpio));
clear_gpio_bits(INTR_RAW_STATUS_EN | INTR_ENABLE, GPIO_INTR_CFG(gpio));
clear_gpio_bits(BIT(INTR_RAW_STATUS_EN) | BIT(INTR_ENABLE), GPIO_INTR_CFG(gpio));
__clear_bit(gpio, msm_gpio.enabled_irqs);
spin_unlock_irqrestore(&tlmm_lock, irq_flags);
}
@ -264,7 +264,7 @@ static void msm_gpio_irq_unmask(struct irq_data *d)
spin_lock_irqsave(&tlmm_lock, irq_flags);
__set_bit(gpio, msm_gpio.enabled_irqs);
set_gpio_bits(INTR_RAW_STATUS_EN | INTR_ENABLE, GPIO_INTR_CFG(gpio));
set_gpio_bits(BIT(INTR_RAW_STATUS_EN) | BIT(INTR_ENABLE), GPIO_INTR_CFG(gpio));
writel(TARGET_PROC_SCORPION, GPIO_INTR_CFG_SU(gpio));
spin_unlock_irqrestore(&tlmm_lock, irq_flags);
}

3
drivers/gpio/gpio-rcar.c
View File

@ -169,7 +169,8 @@ static irqreturn_t gpio_rcar_irq_handler(int irq, void *dev_id)
u32 pending;
unsigned int offset, irqs_handled = 0;
while ((pending = gpio_rcar_read(p, INTDT))) {
while ((pending = gpio_rcar_read(p, INTDT) &
gpio_rcar_read(p, INTMSK))) {
offset = __ffs(pending);
gpio_rcar_write(p, INTCLR, BIT(offset));
generic_handle_irq(irq_find_mapping(p->irq_domain, offset));

15
drivers/gpio/gpio-twl4030.c
View File

@ -300,7 +300,7 @@ static int twl_direction_in(struct gpio_chip *chip, unsigned offset)
if (offset < TWL4030_GPIO_MAX)
ret = twl4030_set_gpio_direction(offset, 1);
else
ret = -EINVAL;
ret = -EINVAL; /* LED outputs can't be set as input */
if (!ret)
priv->direction &= ~BIT(offset);
@ -354,11 +354,20 @@ static void twl_set(struct gpio_chip *chip, unsigned offset, int value)
static int twl_direction_out(struct gpio_chip *chip, unsigned offset, int value)
{
struct gpio_twl4030_priv *priv = to_gpio_twl4030(chip);
int ret = -EINVAL;
int ret = 0;
mutex_lock(&priv->mutex);
if (offset < TWL4030_GPIO_MAX)
if (offset < TWL4030_GPIO_MAX) {
ret = twl4030_set_gpio_direction(offset, 0);
if (ret) {
mutex_unlock(&priv->mutex);
return ret;
}
}
/*
* LED gpios i.e. offset >= TWL4030_GPIO_MAX are always output
*/
priv->direction |= BIT(offset);
mutex_unlock(&priv->mutex);

1
drivers/gpu/drm/armada/armada_drm.h
View File

@ -103,6 +103,7 @@ void armada_drm_queue_unref_work(struct drm_device *,
extern const struct drm_mode_config_funcs armada_drm_mode_config_funcs;
int armada_fbdev_init(struct drm_device *);
void armada_fbdev_lastclose(struct drm_device *);
void armada_fbdev_fini(struct drm_device *);
int armada_overlay_plane_create(struct drm_device *, unsigned long);

7
drivers/gpu/drm/armada/armada_drv.c
View File

@ -321,6 +321,11 @@ static struct drm_ioctl_desc armada_ioctls[] = {
DRM_UNLOCKED),
};
static void armada_drm_lastclose(struct drm_device *dev)
{
armada_fbdev_lastclose(dev);
}
static const struct file_operations armada_drm_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
@ -337,7 +342,7 @@ static struct drm_driver armada_drm_driver = {
.open = NULL,
.preclose = NULL,
.postclose = NULL,
.lastclose = NULL,
.lastclose = armada_drm_lastclose,
.unload = armada_drm_unload,
.get_vblank_counter = drm_vblank_count,
.enable_vblank = armada_drm_enable_vblank,

20
drivers/gpu/drm/armada/armada_fbdev.c
View File

@ -105,9 +105,9 @@ static int armada_fb_create(struct drm_fb_helper *fbh,
drm_fb_helper_fill_fix(info, dfb->fb.pitches[0], dfb->fb.depth);
drm_fb_helper_fill_var(info, fbh, sizes->fb_width, sizes->fb_height);
DRM_DEBUG_KMS("allocated %dx%d %dbpp fb: 0x%08x\n",
dfb->fb.width, dfb->fb.height,
dfb->fb.bits_per_pixel, obj->phys_addr);
DRM_DEBUG_KMS("allocated %dx%d %dbpp fb: 0x%08llx\n",
dfb->fb.width, dfb->fb.height, dfb->fb.bits_per_pixel,
(unsigned long long)obj->phys_addr);
return 0;
@ -177,6 +177,16 @@ int armada_fbdev_init(struct drm_device *dev)
return ret;
}
void armada_fbdev_lastclose(struct drm_device *dev)
{
struct armada_private *priv = dev->dev_private;
drm_modeset_lock_all(dev);
if (priv->fbdev)
drm_fb_helper_restore_fbdev_mode(priv->fbdev);
drm_modeset_unlock_all(dev);
}
void armada_fbdev_fini(struct drm_device *dev)
{
struct armada_private *priv = dev->dev_private;
@ -192,11 +202,11 @@ void armada_fbdev_fini(struct drm_device *dev)
framebuffer_release(info);
}
drm_fb_helper_fini(fbh);
if (fbh->fb)
fbh->fb->funcs->destroy(fbh->fb);
drm_fb_helper_fini(fbh);
priv->fbdev = NULL;
}
}

7
drivers/gpu/drm/armada/armada_gem.c
View File

@ -172,8 +172,9 @@ armada_gem_linear_back(struct drm_device *dev, struct armada_gem_object *obj)
obj->dev_addr = obj->linear->start;
}
DRM_DEBUG_DRIVER("obj %p phys %#x dev %#x\n",
obj, obj->phys_addr, obj->dev_addr);
DRM_DEBUG_DRIVER("obj %p phys %#llx dev %#llx\n", obj,
(unsigned long long)obj->phys_addr,
(unsigned long long)obj->dev_addr);
return 0;
}
@ -557,7 +558,6 @@ armada_gem_prime_import(struct drm_device *dev, struct dma_buf *buf)
* refcount on the gem object itself.
*/
drm_gem_object_reference(obj);
dma_buf_put(buf);
return obj;
}
}
@ -573,6 +573,7 @@ armada_gem_prime_import(struct drm_device *dev, struct dma_buf *buf)
}
dobj->obj.import_attach = attach;
get_dma_buf(buf);
/*
* Don't call dma_buf_map_attachment() here - it maps the

8
drivers/gpu/drm/drm_edid.c
View File

@ -68,6 +68,8 @@
#define EDID_QUIRK_DETAILED_SYNC_PP (1 << 6)
/* Force reduced-blanking timings for detailed modes */
#define EDID_QUIRK_FORCE_REDUCED_BLANKING (1 << 7)
/* Force 8bpc */
#define EDID_QUIRK_FORCE_8BPC (1 << 8)
struct detailed_mode_closure {
struct drm_connector *connector;
@ -128,6 +130,9 @@ static struct edid_quirk {
/* Medion MD 30217 PG */
{ "MED", 0x7b8, EDID_QUIRK_PREFER_LARGE_75 },
/* Panel in Samsung NP700G7A-S01PL notebook reports 6bpc */
{ "SEC", 0xd033, EDID_QUIRK_FORCE_8BPC },
};
/*
@ -3435,6 +3440,9 @@ int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
drm_add_display_info(edid, &connector->display_info);
if (quirks & EDID_QUIRK_FORCE_8BPC)
connector->display_info.bpc = 8;
return num_modes;
}
EXPORT_SYMBOL(drm_add_edid_modes);

6
drivers/gpu/drm/drm_stub.c
View File

@ -566,11 +566,11 @@ err_unload:
if (dev->driver->unload)
dev->driver->unload(dev);
err_primary_node:
drm_put_minor(dev->primary);
drm_unplug_minor(dev->primary);
err_render_node:
drm_put_minor(dev->render);
drm_unplug_minor(dev->render);
err_control_node:
drm_put_minor(dev->control);
drm_unplug_minor(dev->control);
err_agp:
if (dev->driver->bus->agp_destroy)
dev->driver->bus->agp_destroy(dev);

20
drivers/gpu/drm/i915/i915_dma.c
View File

@ -83,6 +83,14 @@ void i915_update_dri1_breadcrumb(struct drm_device *dev)
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_i915_master_private *master_priv;
/*
* The dri breadcrumb update races against the drm master disappearing.
* Instead of trying to fix this (this is by far not the only ums issue)
* just don't do the update in kms mode.
*/
if (drm_core_check_feature(dev, DRIVER_MODESET))
return;
if (dev->primary->master) {
master_priv = dev->primary->master->driver_priv;
if (master_priv->sarea_priv)
@ -1490,16 +1498,9 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
spin_lock_init(&dev_priv->uncore.lock);
spin_lock_init(&dev_priv->mm.object_stat_lock);
mutex_init(&dev_priv->dpio_lock);
mutex_init(&dev_priv->rps.hw_lock);
mutex_init(&dev_priv->modeset_restore_lock);
mutex_init(&dev_priv->pc8.lock);
dev_priv->pc8.requirements_met = false;
dev_priv->pc8.gpu_idle = false;
dev_priv->pc8.irqs_disabled = false;
dev_priv->pc8.enabled = false;
dev_priv->pc8.disable_count = 2; /* requirements_met + gpu_idle */
INIT_DELAYED_WORK(&dev_priv->pc8.enable_work, hsw_enable_pc8_work);
intel_pm_setup(dev);
intel_display_crc_init(dev);
@ -1603,7 +1604,6 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
}
intel_irq_init(dev);
intel_pm_init(dev);
intel_uncore_sanitize(dev);
/* Try to make sure MCHBAR is enabled before poking at it */
@ -1848,8 +1848,10 @@ void i915_driver_lastclose(struct drm_device * dev)
void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
{
mutex_lock(&dev->struct_mutex);
i915_gem_context_close(dev, file_priv);
i915_gem_release(dev, file_priv);
mutex_unlock(&dev->struct_mutex);
}
void i915_driver_postclose(struct drm_device *dev, struct drm_file *file)

1
drivers/gpu/drm/i915/i915_drv.c
View File

@ -651,6 +651,7 @@ static int __i915_drm_thaw(struct drm_device *dev, bool restore_gtt_mappings)
intel_modeset_init_hw(dev);
drm_modeset_lock_all(dev);
drm_mode_config_reset(dev);
intel_modeset_setup_hw_state(dev, true);
drm_modeset_unlock_all(dev);

9
drivers/gpu/drm/i915/i915_drv.h
View File

@ -1755,8 +1755,13 @@ struct drm_i915_file_private {
#define IS_MOBILE(dev) (INTEL_INFO(dev)->is_mobile)
#define IS_HSW_EARLY_SDV(dev) (IS_HASWELL(dev) && \
((dev)->pdev->device & 0xFF00) == 0x0C00)
#define IS_ULT(dev) (IS_HASWELL(dev) && \
#define IS_BDW_ULT(dev) (IS_BROADWELL(dev) && \
(((dev)->pdev->device & 0xf) == 0x2 || \
((dev)->pdev->device & 0xf) == 0x6 || \
((dev)->pdev->device & 0xf) == 0xe))
#define IS_HSW_ULT(dev) (IS_HASWELL(dev) && \
((dev)->pdev->device & 0xFF00) == 0x0A00)
#define IS_ULT(dev) (IS_HSW_ULT(dev) || IS_BDW_ULT(dev))
#define IS_HSW_GT3(dev) (IS_HASWELL(dev) && \
((dev)->pdev->device & 0x00F0) == 0x0020)
#define IS_PRELIMINARY_HW(intel_info) ((intel_info)->is_preliminary)
@ -1901,9 +1906,7 @@ void i915_queue_hangcheck(struct drm_device *dev);
void i915_handle_error(struct drm_device *dev, bool wedged);
extern void intel_irq_init(struct drm_device *dev);
extern void intel_pm_init(struct drm_device *dev);
extern void intel_hpd_init(struct drm_device *dev);
extern void intel_pm_init(struct drm_device *dev);
extern void intel_uncore_sanitize(struct drm_device *dev);
extern void intel_uncore_early_sanitize(struct drm_device *dev);

34
drivers/gpu/drm/i915/i915_gem.c
View File

@ -2343,15 +2343,24 @@ static void i915_gem_free_request(struct drm_i915_gem_request *request)
kfree(request);
}
static void i915_gem_reset_ring_lists(struct drm_i915_private *dev_priv,
struct intel_ring_buffer *ring)
static void i915_gem_reset_ring_status(struct drm_i915_private *dev_priv,
struct intel_ring_buffer *ring)
{
u32 completed_seqno;
u32 acthd;
u32 completed_seqno = ring->get_seqno(ring, false);
u32 acthd = intel_ring_get_active_head(ring);
struct drm_i915_gem_request *request;
acthd = intel_ring_get_active_head(ring);
completed_seqno = ring->get_seqno(ring, false);
list_for_each_entry(request, &ring->request_list, list) {
if (i915_seqno_passed(completed_seqno, request->seqno))
continue;
i915_set_reset_status(ring, request, acthd);
}
}
static void i915_gem_reset_ring_cleanup(struct drm_i915_private *dev_priv,
struct intel_ring_buffer *ring)
{
while (!list_empty(&ring->request_list)) {
struct drm_i915_gem_request *request;
@ -2359,9 +2368,6 @@ static void i915_gem_reset_ring_lists(struct drm_i915_private *dev_priv,
struct drm_i915_gem_request,
list);
if (request->seqno > completed_seqno)
i915_set_reset_status(ring, request, acthd);
i915_gem_free_request(request);
}
@ -2403,8 +2409,16 @@ void i915_gem_reset(struct drm_device *dev)
struct intel_ring_buffer *ring;
int i;
/*
* Before we free the objects from the requests, we need to inspect
* them for finding the guilty party. As the requests only borrow
* their reference to the objects, the inspection must be done first.
*/
for_each_ring(ring, dev_priv, i)
i915_gem_reset_ring_lists(dev_priv, ring);
i915_gem_reset_ring_status(dev_priv, ring);
for_each_ring(ring, dev_priv, i)
i915_gem_reset_ring_cleanup(dev_priv, ring);
i915_gem_cleanup_ringbuffer(dev);

16
drivers/gpu/drm/i915/i915_gem_context.c
View File

@ -347,10 +347,8 @@ void i915_gem_context_close(struct drm_device *dev, struct drm_file *file)
{
struct drm_i915_file_private *file_priv = file->driver_priv;
mutex_lock(&dev->struct_mutex);
idr_for_each(&file_priv->context_idr, context_idr_cleanup, NULL);
idr_destroy(&file_priv->context_idr);
mutex_unlock(&dev->struct_mutex);
}
static struct i915_hw_context *
@ -423,11 +421,21 @@ static int do_switch(struct i915_hw_context *to)
if (ret)
return ret;
/* Clear this page out of any CPU caches for coherent swap-in/out. Note
/*
* Pin can switch back to the default context if we end up calling into
* evict_everything - as a last ditch gtt defrag effort that also
* switches to the default context. Hence we need to reload from here.
*/
from = ring->last_context;
/*
* Clear this page out of any CPU caches for coherent swap-in/out. Note
* that thanks to write = false in this call and us not setting any gpu
* write domains when putting a context object onto the active list
* (when switching away from it), this won't block.
* XXX: We need a real interface to do this instead of trickery. */
*
* XXX: We need a real interface to do this instead of trickery.
*/
ret = i915_gem_object_set_to_gtt_domain(to->obj, false);
if (ret) {
i915_gem_object_unpin(to->obj);

14
drivers/gpu/drm/i915/i915_gem_evict.c
View File

@ -88,6 +88,7 @@ i915_gem_evict_something(struct drm_device *dev, struct i915_address_space *vm,
} else
drm_mm_init_scan(&vm->mm, min_size, alignment, cache_level);
search_again:
/* First see if there is a large enough contiguous idle region... */
list_for_each_entry(vma, &vm->inactive_list, mm_list) {
if (mark_free(vma, &unwind_list))
@ -115,10 +116,17 @@ none:
list_del_init(&vma->exec_list);
}
/* We expect the caller to unpin, evict all and try again, or give up.
* So calling i915_gem_evict_vm() is unnecessary.
/* Can we unpin some objects such as idle hw contents,
* or pending flips?
*/
return -ENOSPC;
ret = nonblocking ? -ENOSPC : i915_gpu_idle(dev);
if (ret)
return ret;
/* Only idle the GPU and repeat the search once */
i915_gem_retire_requests(dev);
nonblocking = true;
goto search_again;
found:
/* drm_mm doesn't allow any other other operations while

Some files were not shown because too many files have changed in this diff Show More