Merge 3.15-rc2 into staging-next

This resolves a bunch of merge errors with other fixes that are already
in Linus's tree.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2014-04-22 10:08:40 -07:00
commit 3eb9992caf
949 changed files with 9084 additions and 27625 deletions

View File

@ -99,6 +99,7 @@ Sachin P Sant <ssant@in.ibm.com>
Sam Ravnborg <sam@mars.ravnborg.org>
Sascha Hauer <s.hauer@pengutronix.de>
S.Çağlar Onur <caglar@pardus.org.tr>
Shiraz Hashim <shiraz.linux.kernel@gmail.com> <shiraz.hashim@st.com>
Simon Kelley <simon@thekelleys.org.uk>
Stéphane Witzmann <stephane.witzmann@ubpmes.univ-bpclermont.fr>
Stephen Hemminger <shemminger@osdl.org>

View File

@ -276,7 +276,7 @@ X!Isound/sound_firmware.c
</para>
<sect1><title>Frame Buffer Memory</title>
!Edrivers/video/fbmem.c
!Edrivers/video/fbdev/core/fbmem.c
</sect1>
<!--
<sect1><title>Frame Buffer Console</title>
@ -284,7 +284,7 @@ X!Edrivers/video/console/fbcon.c
</sect1>
-->
<sect1><title>Frame Buffer Colormap</title>
!Edrivers/video/fbcmap.c
!Edrivers/video/fbdev/core/fbcmap.c
</sect1>
<!-- FIXME:
drivers/video/fbgen.c has no docs, which stuffs up the sgml. Comment
@ -294,11 +294,11 @@ X!Idrivers/video/fbgen.c
</sect1>
KAO -->
<sect1><title>Frame Buffer Video Mode Database</title>
!Idrivers/video/modedb.c
!Edrivers/video/modedb.c
!Idrivers/video/fbdev/core/modedb.c
!Edrivers/video/fbdev/core/modedb.c
</sect1>
<sect1><title>Frame Buffer Macintosh Video Mode Database</title>
!Edrivers/video/macmodes.c
!Edrivers/video/fbdev/macmodes.c
</sect1>
<sect1><title>Frame Buffer Fonts</title>
<para>

View File

@ -2285,6 +2285,11 @@ void intel_crt_init(struct drm_device *dev)
<sect2>
<title>Modeset Helper Functions Reference</title>
!Edrivers/gpu/drm/drm_crtc_helper.c
</sect2>
<sect2>
<title>Output Probing Helper Functions Reference</title>
!Pdrivers/gpu/drm/drm_probe_helper.c output probing helper overview
!Edrivers/gpu/drm/drm_probe_helper.c
</sect2>
<sect2>
<title>fbdev Helper Functions Reference</title>

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@ -0,0 +1,97 @@
Marvell Kirkwood SoC Family Device Tree Bindings
------------------------------------------------
Boards with a SoC of the Marvell Kirkwook family, eg 88f6281
* Required root node properties:
compatible: must contain "marvell,kirkwood"
In addition, the above compatible shall be extended with the specific
SoC. Currently known SoC compatibles are:
"marvell,kirkwood-88f6192"
"marvell,kirkwood-88f6281"
"marvell,kirkwood-88f6282"
"marvell,kirkwood-88f6283"
"marvell,kirkwood-88f6702"
"marvell,kirkwood-98DX4122"
And in addition, the compatible shall be extended with the specific
board. Currently known boards are:
"buffalo,lschlv2"
"buffalo,lsxhl"
"buffalo,lsxl"
"dlink,dns-320"
"dlink,dns-320-a1"
"dlink,dns-325"
"dlink,dns-325-a1"
"dlink,dns-kirkwood"
"excito,b3"
"globalscale,dreamplug-003-ds2001"
"globalscale,guruplug"
"globalscale,guruplug-server-plus"
"globalscale,sheevaplug"
"globalscale,sheevaplug"
"globalscale,sheevaplug-esata"
"globalscale,sheevaplug-esata-rev13"
"iom,iconnect"
"iom,iconnect-1.1"
"iom,ix2-200"
"keymile,km_kirkwood"
"lacie,cloudbox"
"lacie,inetspace_v2"
"lacie,laplug"
"lacie,netspace_lite_v2"
"lacie,netspace_max_v2"
"lacie,netspace_mini_v2"
"lacie,netspace_v2"
"marvell,db-88f6281-bp"
"marvell,db-88f6282-bp"
"marvell,mv88f6281gtw-ge"
"marvell,rd88f6281"
"marvell,rd88f6281"
"marvell,rd88f6281-a0"
"marvell,rd88f6281-a1"
"mpl,cec4"
"mpl,cec4-10"
"netgear,readynas"
"netgear,readynas"
"netgear,readynas-duo-v2"
"netgear,readynas-nv+-v2"
"plathome,openblocks-a6"
"plathome,openblocks-a7"
"raidsonic,ib-nas6210"
"raidsonic,ib-nas6210-b"
"raidsonic,ib-nas6220"
"raidsonic,ib-nas6220-b"
"raidsonic,ib-nas62x0"
"seagate,dockstar"
"seagate,goflexnet"
"synology,ds109"
"synology,ds110jv10"
"synology,ds110jv20"
"synology,ds110jv30"
"synology,ds111"
"synology,ds209"
"synology,ds210jv10"
"synology,ds210jv20"
"synology,ds212"
"synology,ds212jv10"
"synology,ds212jv20"
"synology,ds212pv10"
"synology,ds409"
"synology,ds409slim"
"synology,ds410j"
"synology,ds411"
"synology,ds411j"
"synology,ds411slim"
"synology,ds413jv10"
"synology,rs212"
"synology,rs409"
"synology,rs411"
"synology,rs812"
"usi,topkick"
"usi,topkick-1281P2"
"zyxel,nsa310"
"zyxel,nsa310a"

View File

@ -13,8 +13,22 @@ ad,ad7414 SMBus/I2C Digital Temperature Sensor in 6-Pin SOT with SMBus Alert an
ad,adm9240 ADM9240: Complete System Hardware Monitor for uProcessor-Based Systems
adi,adt7461 +/-1C TDM Extended Temp Range I.C
adt7461 +/-1C TDM Extended Temp Range I.C
adi,adt7473 +/-1C TDM Extended Temp Range I.C
adi,adt7475 +/-1C TDM Extended Temp Range I.C
adi,adt7476 +/-1C TDM Extended Temp Range I.C
adi,adt7490 +/-1C TDM Extended Temp Range I.C
at,24c08 i2c serial eeprom (24cxx)
atmel,24c00 i2c serial eeprom (24cxx)
atmel,24c01 i2c serial eeprom (24cxx)
atmel,24c02 i2c serial eeprom (24cxx)
atmel,24c04 i2c serial eeprom (24cxx)
atmel,24c16 i2c serial eeprom (24cxx)
atmel,24c32 i2c serial eeprom (24cxx)
atmel,24c64 i2c serial eeprom (24cxx)
atmel,24c128 i2c serial eeprom (24cxx)
atmel,24c256 i2c serial eeprom (24cxx)
atmel,24c512 i2c serial eeprom (24cxx)
atmel,24c1024 i2c serial eeprom (24cxx)
atmel,at97sc3204t i2c trusted platform module (TPM)
capella,cm32181 CM32181: Ambient Light Sensor
catalyst,24c32 i2c serial eeprom
@ -46,8 +60,10 @@ maxim,ds1050 5 Bit Programmable, Pulse-Width Modulator
maxim,max1237 Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs
maxim,max6625 9-Bit/12-Bit Temperature Sensors with I²C-Compatible Serial Interface
mc,rv3029c2 Real Time Clock Module with I2C-Bus
national,lm63 Temperature sensor with integrated fan control
national,lm75 I2C TEMP SENSOR
national,lm80 Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor
national,lm85 Temperature sensor with integrated fan control
national,lm92 ±0.33°C Accurate, 12-Bit + Sign Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
nuvoton,npct501 i2c trusted platform module (TPM)
nxp,pca9556 Octal SMBus and I2C registered interface

View File

@ -10,7 +10,7 @@ The following properties are common to the Ethernet controllers:
- max-frame-size: number, maximum transfer unit (IEEE defined MTU), rather than
the maximum frame size (there's contradiction in ePAPR).
- phy-mode: string, operation mode of the PHY interface; supported values are
"mii", "gmii", "sgmii", "tbi", "rev-mii", "rmii", "rgmii", "rgmii-id",
"mii", "gmii", "sgmii", "qsgmii", "tbi", "rev-mii", "rmii", "rgmii", "rgmii-id",
"rgmii-rxid", "rgmii-txid", "rtbi", "smii", "xgmii"; this is now a de-facto
standard property;
- phy-connection-type: the same as "phy-mode" property but described in ePAPR;

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@ -119,7 +119,7 @@ Optional Properties (for HDMI pins):
Example:
// pin controller node
pinctrl@35004800 {
compatible = "brcmbcm11351-pinctrl";
compatible = "brcm,bcm11351-pinctrl";
reg = <0x35004800 0x430>;
// pin configuration node

View File

@ -1,7 +1,7 @@
* Energymicro efm32 UART
Required properties:
- compatible : Should be "efm32,uart"
- compatible : Should be "energymicro,efm32-uart"
- reg : Address and length of the register set
- interrupts : Should contain uart interrupt
@ -13,7 +13,7 @@ Optional properties:
Example:
uart@0x4000c400 {
compatible = "efm32,uart";
compatible = "energymicro,efm32-uart";
reg = <0x4000c400 0x400>;
interrupts = <15>;
efm32,location = <0>;

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@ -22,6 +22,7 @@ auo AU Optronics Corporation
avago Avago Technologies
bosch Bosch Sensortec GmbH
brcm Broadcom Corporation
buffalo Buffalo, Inc.
calxeda Calxeda
capella Capella Microsystems, Inc
cavium Cavium, Inc.
@ -33,15 +34,18 @@ cortina Cortina Systems, Inc.
crystalfontz Crystalfontz America, Inc.
dallas Maxim Integrated Products (formerly Dallas Semiconductor)
davicom DAVICOM Semiconductor, Inc.
dlink D-Link Systems, Inc.
denx Denx Software Engineering
digi Digi International Inc.
dlink D-Link Corporation
dmo Data Modul AG
ebv EBV Elektronik
edt Emerging Display Technologies
emmicro EM Microelectronic
epfl Ecole Polytechnique Fédérale de Lausanne
epson Seiko Epson Corp.
est ESTeem Wireless Modems
eukrea Eukréa Electromatique
excito Excito
fsl Freescale Semiconductor
GEFanuc GE Fanuc Intelligent Platforms Embedded Systems, Inc.
gef GE Fanuc Intelligent Platforms Embedded Systems, Inc.
@ -53,13 +57,17 @@ haoyu Haoyu Microelectronic Co. Ltd.
hisilicon Hisilicon Limited.
honeywell Honeywell
hp Hewlett Packard
i2se I2SE GmbH
ibm International Business Machines (IBM)
idt Integrated Device Technologies, Inc.
iom Iomega Corporation
img Imagination Technologies Ltd.
intel Intel Corporation
intercontrol Inter Control Group
isee ISEE 2007 S.L.
isl Intersil
karo Ka-Ro electronics GmbH
keymile Keymile GmbH
lacie LaCie
lantiq Lantiq Semiconductor
lg LG Corporation
@ -70,9 +78,12 @@ maxim Maxim Integrated Products
microchip Microchip Technology Inc.
mosaixtech Mosaix Technologies, Inc.
moxa Moxa
mpl MPL AG
mxicy Macronix International Co., Ltd.
national National Semiconductor
neonode Neonode Inc.
netgear NETGEAR
newhaven Newhaven Display International
nintendo Nintendo
nokia Nokia
nvidia NVIDIA
@ -82,10 +93,12 @@ opencores OpenCores.org
panasonic Panasonic Corporation
phytec PHYTEC Messtechnik GmbH
picochip Picochip Ltd
plathome Plat'Home Co., Ltd.
powervr PowerVR (deprecated, use img)
qca Qualcomm Atheros, Inc.
qcom Qualcomm Technologies, Inc
qnap QNAP Systems, Inc.
raidsonic RaidSonic Technology GmbH
ralink Mediatek/Ralink Technology Corp.
ramtron Ramtron International
realtek Realtek Semiconductor Corp.
@ -95,6 +108,7 @@ rockchip Fuzhou Rockchip Electronics Co., Ltd
samsung Samsung Semiconductor
sbs Smart Battery System
schindler Schindler
seagate Seagate Technology PLC
sil Silicon Image
silabs Silicon Laboratories
simtek
@ -111,6 +125,7 @@ ti Texas Instruments
tlm Trusted Logic Mobility
toshiba Toshiba Corporation
toumaz Toumaz
usi Universal Scientifc Industrial Co., Ltd.
v3 V3 Semiconductor
via VIA Technologies, Inc.
voipac Voipac Technologies s.r.o.
@ -119,3 +134,4 @@ wlf Wolfson Microelectronics
wm Wondermedia Technologies, Inc.
xes Extreme Engineering Solutions (X-ES)
xlnx Xilinx
zyxel ZyXEL Communications Corp.

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@ -315,7 +315,7 @@ Andrew Morton が Linux-kernel メーリングリストにカーネルリリー
もし、3.x.y カーネルが存在しない場合には、番号が一番大きい 3.x が
最新の安定版カーネルです。
3.x.y は "stable" チーム <stable@kernel.org> でメンテされており、必
3.x.y は "stable" チーム <stable@vger.kernel.org> でメンテされており、必
要に応じてリリースされます。通常のリリース期間は 2週間毎ですが、差し迫っ
た問題がなければもう少し長くなることもあります。セキュリティ関連の問題
の場合はこれに対してだいたいの場合、すぐにリリースがされます。

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@ -50,16 +50,16 @@ linux-2.6.29/Documentation/stable_kernel_rules.txt
-stable ツリーにパッチを送付する手続き-
- 上記の規則に従っているかを確認した後に、stable@kernel.org にパッチ
- 上記の規則に従っているかを確認した後に、stable@vger.kernel.org にパッチ
を送る。
- 送信者はパッチがキューに受け付けられた際には ACK を、却下された場合
には NAK を受け取る。この反応は開発者たちのスケジュールによって、数
日かかる場合がある。
- もし受け取られたら、パッチは他の開発者たちと関連するサブシステムの
メンテナーによるレビューのために -stable キューに追加される。
- パッチに stable@kernel.org のアドレスが付加されているときには、それ
- パッチに stable@vger.kernel.org のアドレスが付加されているときには、それ
が Linus のツリーに入る時に自動的に stable チームに email される。
- セキュリティパッチはこのエイリアス (stable@kernel.org) に送られるべ
- セキュリティパッチはこのエイリアス (stable@vger.kernel.org) に送られるべ
きではなく、代わりに security@kernel.org のアドレスに送られる。
レビューサイクル-

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@ -804,13 +804,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
dhash_entries= [KNL]
Set number of hash buckets for dentry cache.
digi= [HW,SERIAL]
IO parameters + enable/disable command.
digiepca= [HW,SERIAL]
See drivers/char/README.epca and
Documentation/serial/digiepca.txt.
disable= [IPV6]
See Documentation/networking/ipv6.txt.
@ -2939,9 +2932,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
rhash_entries= [KNL,NET]
Set number of hash buckets for route cache
riscom8= [HW,SERIAL]
Format: <io_board1>[,<io_board2>[,...<io_boardN>]]
ro [KNL] Mount root device read-only on boot
root= [KNL] Root filesystem
@ -3083,9 +3073,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
sonypi.*= [HW] Sony Programmable I/O Control Device driver
See Documentation/laptops/sonypi.txt
specialix= [HW,SERIAL] Specialix multi-serial port adapter
See Documentation/serial/specialix.txt.
spia_io_base= [HW,MTD]
spia_fio_base=
spia_pedr=

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@ -63,8 +63,6 @@ Magic Name Number Structure File
PG_MAGIC 'P' pg_{read,write}_hdr include/linux/pg.h
CMAGIC 0x0111 user include/linux/a.out.h
MKISS_DRIVER_MAGIC 0x04bf mkiss_channel drivers/net/mkiss.h
RISCOM8_MAGIC 0x0907 riscom_port drivers/char/riscom8.h
SPECIALIX_MAGIC 0x0907 specialix_port drivers/char/specialix_io8.h
HDLC_MAGIC 0x239e n_hdlc drivers/char/n_hdlc.c
APM_BIOS_MAGIC 0x4101 apm_user arch/x86/kernel/apm_32.c
CYCLADES_MAGIC 0x4359 cyclades_port include/linux/cyclades.h
@ -82,7 +80,6 @@ STRIP_MAGIC 0x5303 strip drivers/net/strip.c
X25_ASY_MAGIC 0x5303 x25_asy drivers/net/x25_asy.h
SIXPACK_MAGIC 0x5304 sixpack drivers/net/hamradio/6pack.h
AX25_MAGIC 0x5316 ax_disp drivers/net/mkiss.h
ESP_MAGIC 0x53ee esp_struct drivers/char/esp.h
TTY_MAGIC 0x5401 tty_struct include/linux/tty.h
MGSL_MAGIC 0x5401 mgsl_info drivers/char/synclink.c
TTY_DRIVER_MAGIC 0x5402 tty_driver include/linux/tty_driver.h
@ -94,13 +91,10 @@ USB_BLUETOOTH_MAGIC 0x6d02 usb_bluetooth drivers/usb/class/bluetty.c
RFCOMM_TTY_MAGIC 0x6d02 net/bluetooth/rfcomm/tty.c
USB_SERIAL_PORT_MAGIC 0x7301 usb_serial_port drivers/usb/serial/usb-serial.h
CG_MAGIC 0x00090255 ufs_cylinder_group include/linux/ufs_fs.h
A2232_MAGIC 0x000a2232 gs_port drivers/char/ser_a2232.h
RPORT_MAGIC 0x00525001 r_port drivers/char/rocket_int.h
LSEMAGIC 0x05091998 lse drivers/fc4/fc.c
GDTIOCTL_MAGIC 0x06030f07 gdth_iowr_str drivers/scsi/gdth_ioctl.h
RIEBL_MAGIC 0x09051990 drivers/net/atarilance.c
RIO_MAGIC 0x12345678 gs_port drivers/char/rio/rio_linux.c
SX_MAGIC 0x12345678 gs_port drivers/char/sx.h
NBD_REQUEST_MAGIC 0x12560953 nbd_request include/linux/nbd.h
RED_MAGIC2 0x170fc2a5 (any) mm/slab.c
BAYCOM_MAGIC 0x19730510 baycom_state drivers/net/baycom_epp.c
@ -116,7 +110,6 @@ ISDN_ASYNC_MAGIC 0x49344C01 modem_info include/linux/isdn.h
CTC_ASYNC_MAGIC 0x49344C01 ctc_tty_info drivers/s390/net/ctctty.c
ISDN_NET_MAGIC 0x49344C02 isdn_net_local_s drivers/isdn/i4l/isdn_net_lib.h
SAVEKMSG_MAGIC2 0x4B4D5347 savekmsg arch/*/amiga/config.c
STLI_BOARDMAGIC 0x4bc6c825 stlibrd include/linux/istallion.h
CS_STATE_MAGIC 0x4c4f4749 cs_state sound/oss/cs46xx.c
SLAB_C_MAGIC 0x4f17a36d kmem_cache mm/slab.c
COW_MAGIC 0x4f4f4f4d cow_header_v1 arch/um/drivers/ubd_user.c
@ -127,10 +120,8 @@ SCC_MAGIC 0x52696368 gs_port drivers/char/scc.h
SAVEKMSG_MAGIC1 0x53415645 savekmsg arch/*/amiga/config.c
GDA_MAGIC 0x58464552 gda arch/mips/include/asm/sn/gda.h
RED_MAGIC1 0x5a2cf071 (any) mm/slab.c
STL_PORTMAGIC 0x5a7182c9 stlport include/linux/stallion.h
EEPROM_MAGIC_VALUE 0x5ab478d2 lanai_dev drivers/atm/lanai.c
HDLCDRV_MAGIC 0x5ac6e778 hdlcdrv_state include/linux/hdlcdrv.h
EPCA_MAGIC 0x5c6df104 channel include/linux/epca.h
PCXX_MAGIC 0x5c6df104 channel drivers/char/pcxx.h
KV_MAGIC 0x5f4b565f kernel_vars_s arch/mips/include/asm/sn/klkernvars.h
I810_STATE_MAGIC 0x63657373 i810_state sound/oss/i810_audio.c
@ -142,17 +133,14 @@ SLOT_MAGIC 0x67267322 slot drivers/hotplug/acpiphp.h
LO_MAGIC 0x68797548 nbd_device include/linux/nbd.h
OPROFILE_MAGIC 0x6f70726f super_block drivers/oprofile/oprofilefs.h
M3_STATE_MAGIC 0x734d724d m3_state sound/oss/maestro3.c
STL_PANELMAGIC 0x7ef621a1 stlpanel include/linux/stallion.h
VMALLOC_MAGIC 0x87654320 snd_alloc_track sound/core/memory.c
KMALLOC_MAGIC 0x87654321 snd_alloc_track sound/core/memory.c
PWC_MAGIC 0x89DC10AB pwc_device drivers/usb/media/pwc.h
NBD_REPLY_MAGIC 0x96744668 nbd_reply include/linux/nbd.h
STL_BOARDMAGIC 0xa2267f52 stlbrd include/linux/stallion.h
ENI155_MAGIC 0xa54b872d midway_eprom drivers/atm/eni.h
SCI_MAGIC 0xbabeface gs_port drivers/char/sh-sci.h
CODA_MAGIC 0xC0DAC0DA coda_file_info fs/coda/coda_fs_i.h
DPMEM_MAGIC 0xc0ffee11 gdt_pci_sram drivers/scsi/gdth.h
STLI_PORTMAGIC 0xe671c7a1 stliport include/linux/istallion.h
YAM_MAGIC 0xF10A7654 yam_port drivers/net/hamradio/yam.c
CCB_MAGIC 0xf2691ad2 ccb drivers/scsi/ncr53c8xx.c
QUEUE_MAGIC_FREE 0xf7e1c9a3 queue_entry drivers/scsi/arm/queue.c

View File

@ -2,23 +2,15 @@
- this file.
README.cycladesZ
- info on Cyclades-Z firmware loading.
digiepca.txt
- info on Digi Intl. {PC,PCI,EISA}Xx and Xem series cards.
driver
- intro to the low level serial driver.
moxa-smartio
- file with info on installing/using Moxa multiport serial driver.
n_gsm.txt
- GSM 0710 tty multiplexer howto.
riscom8.txt
- notes on using the RISCom/8 multi-port serial driver.
rocket.txt
- info on the Comtrol RocketPort multiport serial driver.
serial-rs485.txt
- info about RS485 structures and support in the kernel.
specialix.txt
- info on hardware/driver for specialix IO8+ multiport serial card.
sx.txt
- info on the Specialix SX/SI multiport serial driver.
tty.txt
- guide to the locking policies of the tty layer.

View File

@ -1,98 +0,0 @@
NOTE: This driver is obsolete. Digi provides a 2.6 driver (dgdm) at
http://www.digi.com for PCI cards. They no longer maintain this driver,
and have no 2.6 driver for ISA cards.
This driver requires a number of user-space tools. They can be acquired from
http://www.digi.com, but only works with 2.4 kernels.
The Digi Intl. epca driver.
----------------------------
The Digi Intl. epca driver for Linux supports the following boards:
Digi PC/Xem, PC/Xr, PC/Xe, PC/Xi, PC/Xeve
Digi EISA/Xem, PCI/Xem, PCI/Xr
Limitations:
------------
Currently the driver only autoprobes for supported PCI boards.
The Linux MAKEDEV command does not support generating the Digiboard
Devices. Users executing digiConfig to setup EISA and PC series cards
will have their device nodes automatically constructed (cud?? for ~CLOCAL,
and ttyD?? for CLOCAL). Users wishing to boot their board from the LILO
prompt, or those users booting PCI cards may use buildDIGI to construct
the necessary nodes.
Notes:
------
This driver may be configured via LILO. For users who have already configured
their driver using digiConfig, configuring from LILO will override previous
settings. Multiple boards may be configured by issuing multiple LILO command
lines. For examples see the bottom of this document.
Device names start at 0 and continue up. Beware of this as previous Digi
drivers started device names with 1.
PCI boards are auto-detected and configured by the driver. PCI boards will
be allocated device numbers (internally) beginning with the lowest PCI slot
first. In other words a PCI card in slot 3 will always have higher device
nodes than a PCI card in slot 1.
LILO config examples:
---------------------
Using LILO's APPEND command, a string of comma separated identifiers or
integers can be used to configure supported boards. The six values in order
are:
Enable/Disable this card or Override,
Type of card: PC/Xe (AccelePort) (0), PC/Xeve (1), PC/Xem or PC/Xr (2),
EISA/Xem (3), PC/64Xe (4), PC/Xi (5),
Enable/Disable alternate pin arrangement,
Number of ports on this card,
I/O Port where card is configured (in HEX if using string identifiers),
Base of memory window (in HEX if using string identifiers),
NOTE : PCI boards are auto-detected and configured. Do not attempt to
configure PCI boards with the LILO append command. If you wish to override
previous configuration data (As set by digiConfig), but you do not wish to
configure any specific card (Example if there are PCI cards in the system)
the following override command will accomplish this:
-> append="digi=2"
Samples:
append="digiepca=E,PC/Xe,D,16,200,D0000"
or
append="digi=1,0,0,16,512,851968"
Supporting Tools:
-----------------
Supporting tools include digiDload, digiConfig, buildPCI, and ditty. See
drivers/char/README.epca for more details. Note,
this driver REQUIRES that digiDload be executed prior to it being used.
Failure to do this will result in an ENODEV error.
Documentation:
--------------
Complete documentation for this product may be found in the tool package.
Sources of information and support:
-----------------------------------
Digi Intl. support site for this product:
-> http://www.digi.com
Acknowledgments:
----------------
Much of this work (And even text) was derived from a similar document
supporting the original public domain DigiBoard driver Copyright (C)
1994,1995 Troy De Jongh. Many thanks to Christoph Lameter
(christoph@lameter.com) and Mike McLagan (mike.mclagan@linux.org) who authored
and contributed to the original document.
Changelog:
----------
10-29-04: Update status of driver, remove dead links in document
James Nelson <james4765@gmail.com>
2000 (?) Original Document

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@ -1,36 +0,0 @@
* NOTE - this is an unmaintained driver. The original author cannot be located.
SDL Communications is now SBS Technologies, and does not have any
information on these ancient ISA cards on their website.
James Nelson <james4765@gmail.com> - 12-12-2004
This is the README for RISCom/8 multi-port serial driver
(C) 1994-1996 D.Gorodchanin
See file LICENSE for terms and conditions.
NOTE: English is not my native language.
I'm sorry for any mistakes in this text.
Misc. notes for RISCom/8 serial driver, in no particular order :)
1) This driver can support up to 4 boards at time.
Use string "riscom8=0xXXX,0xXXX,0xXXX,0xXXX" at LILO prompt, for
setting I/O base addresses for boards. If you compile driver
as module use modprobe options "iobase=0xXXX iobase1=0xXXX iobase2=..."
2) The driver partially supports famous 'setserial' program, you can use almost
any of its options, excluding port & irq settings.
3) There are some misc. defines at the beginning of riscom8.c, please read the
comments and try to change some of them in case of problems.
4) I consider the current state of the driver as BETA.
5) SDL Communications WWW page is http://www.sdlcomm.com.
6) You can use the MAKEDEV program to create RISCom/8 /dev/ttyL* entries.
7) Minor numbers for first board are 0-7, for second 8-15, etc.
22 Apr 1996.

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@ -1,383 +0,0 @@
specialix.txt -- specialix IO8+ multiport serial driver readme.
Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl)
Specialix pays for the development and support of this driver.
Please DO contact io8-linux@specialix.co.uk if you require
support.
This driver was developed in the BitWizard linux device
driver service. If you require a linux device driver for your
product, please contact devices@BitWizard.nl for a quote.
This code is firmly based on the riscom/8 serial driver,
written by Dmitry Gorodchanin. The specialix IO8+ card
programming information was obtained from the CL-CD1865 Data
Book, and Specialix document number 6200059: IO8+ Hardware
Functional Specification, augmented by document number 6200088:
Merak Hardware Functional Specification. (IO8+/PCI is also
called Merak)
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
This program is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
USA.
Intro
=====
This file contains some random information, that I like to have online
instead of in a manual that can get lost. Ever misplace your Linux
kernel sources? And the manual of one of the boards in your computer?
Addresses and interrupts
========================
Address dip switch settings:
The dip switch sets bits 2-9 of the IO address.
9 8 7 6 5 4 3 2
+-----------------+
0 | X X X X X X X |
| | = IoBase = 0x100
1 | X |
+-----------------+ ------ RS232 connectors ---->
| | |
edge connector
| | |
V V V
Base address 0x100 caused a conflict in one of my computers once. I
haven't the foggiest why. My Specialix card is now at 0x180. My
other computer runs just fine with the Specialix card at 0x100....
The card occupies 4 addresses, but actually only two are really used.
The PCI version doesn't have any dip switches. The BIOS assigns
an IO address.
The driver now still autoprobes at 0x100, 0x180, 0x250 and 0x260. If
that causes trouble for you, please report that. I'll remove
autoprobing then.
The driver will tell the card what IRQ to use, so you don't have to
change any jumpers to change the IRQ. Just use a command line
argument (irq=xx) to the insmod program to set the interrupt.
The BIOS assigns the IRQ on the PCI version. You have no say in what
IRQ to use in that case.
If your specialix cards are not at the default locations, you can use
the kernel command line argument "specialix=io0,irq0,io1,irq1...".
Here "io0" is the io address for the first card, and "irq0" is the
irq line that the first card should use. And so on.
Examples.
You use the driver as a module and have three cards at 0x100, 0x250
and 0x180. And some way or another you want them detected in that
order. Moreover irq 12 is taken (e.g. by your PS/2 mouse).
insmod specialix.o iobase=0x100,0x250,0x180 irq=9,11,15
The same three cards, but now in the kernel would require you to
add
specialix=0x100,9,0x250,11,0x180,15
to the command line. This would become
append="specialix=0x100,9,0x250,11,0x180,15"
in your /etc/lilo.conf file if you use lilo.
The Specialix driver is slightly odd: It allows you to have the second
or third card detected without having a first card. This has
advantages and disadvantages. A slot that isn't filled by an ISA card,
might be filled if a PCI card is detected. Thus if you have an ISA
card at 0x250 and a PCI card, you would get:
sx0: specialix IO8+ Board at 0x100 not found.
sx1: specialix IO8+ Board at 0x180 not found.
sx2: specialix IO8+ board detected at 0x250, IRQ 12, CD1865 Rev. B.
sx3: specialix IO8+ Board at 0x260 not found.
sx0: specialix IO8+ board detected at 0xd800, IRQ 9, CD1865 Rev. B.
This would happen if you don't give any probe hints to the driver.
If you would specify:
specialix=0x250,11
you'd get the following messages:
sx0: specialix IO8+ board detected at 0x250, IRQ 11, CD1865 Rev. B.
sx1: specialix IO8+ board detected at 0xd800, IRQ 9, CD1865 Rev. B.
ISA probing is aborted after the IO address you gave is exhausted, and
the PCI card is now detected as the second card. The ISA card is now
also forced to IRQ11....
Baud rates
==========
The rev 1.2 and below boards use a CL-CD1864. These chips can only
do 64kbit. The rev 1.3 and newer boards use a CL-CD1865. These chips
are officially capable of 115k2.
The Specialix card uses a 25MHz crystal (in times two mode, which in
fact is a divided by two mode). This is not enough to reach the rated
115k2 on all ports at the same time. With this clock rate you can only
do 37% of this rate. This means that at 115k2 on all ports you are
going to lose characters (The chip cannot handle that many incoming
bits at this clock rate.) (Yes, you read that correctly: there is a
limit to the number of -=bits=- per second that the chip can handle.)
If you near the "limit" you will first start to see a graceful
degradation in that the chip cannot keep the transmitter busy at all
times. However with a central clock this slow, you can also get it to
miss incoming characters. The driver will print a warning message when
you are outside the official specs. The messages usually show up in
the file /var/log/messages .
The specialix card cannot reliably do 115k2. If you use it, you have
to do "extensive testing" (*) to verify if it actually works.
When "mgetty" communicates with my modem at 115k2 it reports:
got: +++[0d]ATQ0V1H0[0d][0d][8a]O[cb][0d][8a]
^^^^ ^^^^ ^^^^
The three characters that have the "^^^" under them have suffered a
bit error in the highest bit. In conclusion: I've tested it, and found
that it simply DOESN'T work for me. I also suspect that this is also
caused by the baud rate being just a little bit out of tune.
I upgraded the crystal to 66Mhz on one of my Specialix cards. Works
great! Contact me for details. (Voids warranty, requires a steady hand
and more such restrictions....)
(*) Cirrus logic CD1864 databook, page 40.
Cables for the Specialix IO8+
=============================
The pinout of the connectors on the IO8+ is:
pin short direction long name
name
Pin 1 DCD input Data Carrier Detect
Pin 2 RXD input Receive
Pin 3 DTR/RTS output Data Terminal Ready/Ready To Send
Pin 4 GND - Ground
Pin 5 TXD output Transmit
Pin 6 CTS input Clear To Send
-- 6 5 4 3 2 1 --
| |
| |
| |
| |
+----- -----+
|__________|
clip
Front view of an RJ12 connector. Cable moves "into" the paper.
(the plug is ready to plug into your mouth this way...)
NULL cable. I don't know who is going to use these except for
testing purposes, but I tested the cards with this cable. (It
took quite a while to figure out, so I'm not going to delete
it. So there! :-)
This end goes This end needs
straight into the some twists in
RJ12 plug. the wiring.
IO8+ RJ12 IO8+ RJ12
1 DCD white -
- - 1 DCD
2 RXD black 5 TXD
3 DTR/RTS red 6 CTS
4 GND green 4 GND
5 TXD yellow 2 RXD
6 CTS blue 3 DTR/RTS
Same NULL cable, but now sorted on the second column.
1 DCD white -
- - 1 DCD
5 TXD yellow 2 RXD
6 CTS blue 3 DTR/RTS
4 GND green 4 GND
2 RXD black 5 TXD
3 DTR/RTS red 6 CTS
This is a modem cable usable for hardware handshaking:
RJ12 DB25 DB9
1 DCD white 8 DCD 1 DCD
2 RXD black 3 RXD 2 RXD
3 DTR/RTS red 4 RTS 7 RTS
4 GND green 7 GND 5 GND
5 TXD yellow 2 TXD 3 TXD
6 CTS blue 5 CTS 8 CTS
+---- 6 DSR 6 DSR
+---- 20 DTR 4 DTR
This is a modem cable usable for software handshaking:
It allows you to reset the modem using the DTR ioctls.
I (REW) have never tested this, "but xxxxxxxxxxxxx
says that it works." If you test this, please
tell me and I'll fill in your name on the xxx's.
RJ12 DB25 DB9
1 DCD white 8 DCD 1 DCD
2 RXD black 3 RXD 2 RXD
3 DTR/RTS red 20 DTR 4 DTR
4 GND green 7 GND 5 GND
5 TXD yellow 2 TXD 3 TXD
6 CTS blue 5 CTS 8 CTS
+---- 6 DSR 6 DSR
+---- 4 RTS 7 RTS
I bought a 6 wire flat cable. It was colored as indicated.
Check that yours is the same before you trust me on this.
Hardware handshaking issues.
============================
The driver can be told to operate in two different ways. The default
behaviour is specialix.sx_rtscts = 0 where the pin behaves as DTR when
hardware handshaking is off. It behaves as the RTS hardware
handshaking signal when hardware handshaking is selected.
When you use this, you have to use the appropriate cable. The
cable will either be compatible with hardware handshaking or with
software handshaking. So switching on the fly is not really an
option.
I actually prefer to use the "specialix.sx_rtscts=1" option.
This makes the DTR/RTS pin always an RTS pin, and ioctls to
change DTR are always ignored. I have a cable that is configured
for this.
Ports and devices
=================
Port 0 is the one furthest from the card-edge connector.
Devices:
You should make the devices as follows:
bash
cd /dev
for i in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 \
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
do
echo -n "$i "
mknod /dev/ttyW$i c 75 $i
mknod /dev/cuw$i c 76 $i
done
echo ""
If your system doesn't come with these devices preinstalled, bug your
linux-vendor about this. They have had ample time to get this
implemented by now.
You cannot have more than 4 boards in one computer. The card only
supports 4 different interrupts. If you really want this, contact me
about this and I'll give you a few tips (requires soldering iron)....
If you have enough PCI slots, you can probably use more than 4 PCI
versions of the card though....
The PCI version of the card cannot adhere to the mechanical part of
the PCI spec because the 8 serial connectors are simply too large. If
it doesn't fit in your computer, bring back the card.
------------------------------------------------------------------------
Fixed bugs and restrictions:
- During initialization, interrupts are blindly turned on.
Having a shadow variable would cause an extra memory
access on every IO instruction.
- The interrupt (on the card) should be disabled when we
don't allocate the Linux end of the interrupt. This allows
a different driver/card to use it while all ports are not in
use..... (a la standard serial port)
== An extra _off variant of the sx_in and sx_out macros are
now available. They don't set the interrupt enable bit.
These are used during initialization. Normal operation uses
the old variant which enables the interrupt line.
- RTS/DTR issue needs to be implemented according to
specialix' spec.
I kind of like the "determinism" of the current
implementation. Compile time flag?
== Ok. Compile time flag! Default is how Specialix likes it.
== Now a config time flag! Gets saved in your config file. Neat!
- Can you set the IO address from the lilo command line?
If you need this, bug me about it, I'll make it.
== Hah! No bugging needed. Fixed! :-)
- Cirrus logic hasn't gotten back to me yet why the CD1865 can
and the CD1864 can't do 115k2. I suspect that this is
because the CD1864 is not rated for 33MHz operation.
Therefore the CD1864 versions of the card can't do 115k2 on
all ports just like the CD1865 versions. The driver does
not block 115k2 on CD1864 cards.
== I called the Cirrus Logic representative here in Holland.
The CD1864 databook is identical to the CD1865 databook,
except for an extra warning at the end. Similar Bit errors
have been observed in testing at 115k2 on both an 1865 and
a 1864 chip. I see no reason why I would prohibit 115k2 on
1864 chips and not do it on 1865 chips. Actually there is
reason to prohibit it on BOTH chips. I print a warning.
If you use 115k2, you're on your own.
- A spiky CD may send spurious HUPs. Also in CLOCAL???
-- A fix for this turned out to be counter productive.
Different fix? Current behaviour is acceptable?
-- Maybe the current implementation is correct. If anybody
gets bitten by this, please report, and it will get fixed.
-- Testing revealed that when in CLOCAL, the problem doesn't
occur. As warned for in the CD1865 manual, the chip may
send modem intr's on a spike. We could filter those out,
but that would be a cludge anyway (You'd still risk getting
a spurious HUP when two spikes occur.).....
Bugs & restrictions:
- This is a difficult card to autoprobe.
You have to WRITE to the address register to even
read-probe a CD186x register. Disable autodetection?
-- Specialix: any suggestions?

View File

@ -1,294 +0,0 @@
sx.txt -- specialix SX/SI multiport serial driver readme.
Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl)
Specialix pays for the development and support of this driver.
Please DO contact support@specialix.co.uk if you require
support.
This driver was developed in the BitWizard linux device
driver service. If you require a linux device driver for your
product, please contact devices@BitWizard.nl for a quote.
(History)
There used to be an SI driver by Simon Allan. This is a complete
rewrite from scratch. Just a few lines-of-code have been snatched.
(Sources)
Specialix document number 6210028: SX Host Card and Download Code
Software Functional Specification.
(Copying)
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
This program is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
USA.
(Addendum)
I'd appreciate it that if you have fixes, that you send them
to me first.
Introduction
============
This file contains some random information, that I like to have online
instead of in a manual that can get lost. Ever misplace your Linux
kernel sources? And the manual of one of the boards in your computer?
Theory of operation
===================
An important thing to know is that the driver itself doesn't have the
firmware for the card. This means that you need the separate package
"sx_firmware". For now you can get the source at
ftp://ftp.bitwizard.nl/specialix/sx_firmware_<version>.tgz
The firmware load needs a "misc" device, so you'll need to enable the
"Support for user misc device modules" in your kernel configuration.
The misc device needs to be called "/dev/specialix_sxctl". It needs
misc major 10, and minor number 167 (assigned by HPA). The section
on creating device files below also creates this device.
After loading the sx.o module into your kernel, the driver will report
the number of cards detected, but because it doesn't have any
firmware, it will not be able to determine the number of ports. Only
when you then run "sx_firmware" will the firmware be downloaded and
the rest of the driver initialized. At that time the sx_firmware
program will report the number of ports installed.
In contrast with many other multi port serial cards, some of the data
structures are only allocated when the card knows the number of ports
that are connected. This means we won't waste memory for 120 port
descriptor structures when you only have 8 ports. If you experience
problems due to this, please report them: I haven't seen any.
Interrupts
==========
A multi port serial card, would generate a horrendous amount of
interrupts if it would interrupt the CPU for every received
character. Even more than 10 years ago, the trick not to use
interrupts but to poll the serial cards was invented.
The SX card allow us to do this two ways. First the card limits its
own interrupt rate to a rate that won't overwhelm the CPU. Secondly,
we could forget about the cards interrupt completely and use the
internal timer for this purpose.
Polling the card can take up to a few percent of your CPU. Using the
interrupts would be better if you have most of the ports idle. Using
timer-based polling is better if your card almost always has work to
do. You save the separate interrupt in that case.
In any case, it doesn't really matter all that much.
The most common problem with interrupts is that for ISA cards in a PCI
system the BIOS has to be told to configure that interrupt as "legacy
ISA". Otherwise the card can pull on the interrupt line all it wants
but the CPU won't see this.
If you can't get the interrupt to work, remember that polling mode is
more efficient (provided you actually use the card intensively).
Allowed Configurations
======================
Some configurations are disallowed. Even though at a glance they might
seem to work, they are known to lockup the bus between the host card
and the device concentrators. You should respect the drivers decision
not to support certain configurations. It's there for a reason.
Warning: Seriously technical stuff ahead. Executive summary: Don't use
SX cards except configured at a 64k boundary. Skip the next paragraph.
The SX cards can theoretically be placed at a 32k boundary. So for
instance you can put an SX card at 0xc8000-0xd7fff. This is not a
"recommended configuration". ISA cards have to tell the bus controller
how they like their timing. Due to timing issues they have to do this
based on which 64k window the address falls into. This means that the
32k window below and above the SX card have to use exactly the same
timing as the SX card. That reportedly works for other SX cards. But
you're still left with two useless 32k windows that should not be used
by anybody else.
Configuring the driver
======================
PCI cards are always detected. The driver auto-probes for ISA cards at
some sensible addresses. Please report if the auto-probe causes trouble
in your system, or when a card isn't detected.
I'm afraid I haven't implemented "kernel command line parameters" yet.
This means that if the default doesn't work for you, you shouldn't use
the compiled-into-the-kernel version of the driver. Use a module
instead. If you convince me that you need this, I'll make it for
you. Deal?
I'm afraid that the module parameters are a bit clumsy. If you have a
better idea, please tell me.
You can specify several parameters:
sx_poll: number of jiffies between timer-based polls.
Set this to "0" to disable timer based polls.
Initialization of cards without a working interrupt
will fail.
Set this to "1" if you want a polling driver.
(on Intel: 100 polls per second). If you don't use
fast baud rates, you might consider a value like "5".
(If you don't know how to do the math, use 1).
sx_slowpoll: Number of jiffies between timer-based polls.
Set this to "100" to poll once a second.
This should get the card out of a stall if the driver
ever misses an interrupt. I've never seen this happen,
and if it does, that's a bug. Tell me.
sx_maxints: Number of interrupts to request from the card.
The card normally limits interrupts to about 100 per
second to offload the host CPU. You can increase this
number to reduce latency on the card a little.
Note that if you give a very high number you can overload
your CPU as well as the CPU on the host card. This setting
is inaccurate and not recommended for SI cards (But it
works).
sx_irqmask: The mask of allowable IRQs to use. I suggest you set
this to 0 (disable IRQs all together) and use polling if
the assignment of IRQs becomes problematic. This is defined
as the sum of (1 << irq) 's that you want to allow. So
sx_irqmask of 8 (1 << 3) specifies that only irq 3 may
be used by the SX driver. If you want to specify to the
driver: "Either irq 11 or 12 is ok for you to use", then
specify (1 << 11) | (1 << 12) = 0x1800 .
sx_debug: You can enable different sorts of debug traces with this.
At "-1" all debugging traces are active. You'll get several
times more debugging output than you'll get characters
transmitted.
Baud rates
==========
Theoretically new SXDCs should be capable of more than 460k
baud. However the line drivers usually give up before that. Also the
CPU on the card may not be able to handle 8 channels going at full
blast at that speed. Moreover, the buffers are not large enough to
allow operation with 100 interrupts per second. You'll have to realize
that the card has a 256 byte buffer, so you'll have to increase the
number of interrupts per second if you have more than 256*100 bytes
per second to transmit. If you do any performance testing in this
area, I'd be glad to hear from you...
(Psst Linux users..... I think the Linux driver is more efficient than
the driver for other OSes. If you can and want to benchmark them
against each other, be my guest, and report your findings...... :-)
Ports and devices
=================
Port 0 is the top connector on the module closest to the host
card. Oh, the ports on the SXDCs and TAs are labelled from 1 to 8
instead of from 0 to 7, as they are numbered by linux. I'm stubborn in
this: I know for sure that I wouldn't be able to calculate which port
is which anymore if I would change that....
Devices:
You should make the device files as follows:
#!/bin/sh
# (I recommend that you cut-and-paste this into a file and run that)
cd /dev
t=0
mknod specialix_sxctl c 10 167
while [ $t -lt 64 ]
do
echo -n "$t "
mknod ttyX$t c 32 $t
mknod cux$t c 33 $t
t=`expr $t + 1`
done
echo ""
rm /etc/psdevtab
ps > /dev/null
This creates 64 devices. If you have more, increase the constant on
the line with "while". The devices start at 0, as is customary on
Linux. Specialix seems to like starting the numbering at 1.
If your system doesn't come with these devices pre-installed, bug your
linux-vendor about this. They should have these devices
"pre-installed" before the new millennium. The "ps" stuff at the end
is to "tell" ps that the new devices exist.
Officially the maximum number of cards per computer is 4. This driver
however supports as many cards in one machine as you want. You'll run
out of interrupts after a few, but you can switch to polled operation
then. At about 256 ports (More than 8 cards), we run out of minor
device numbers. Sorry. I suggest you buy a second computer.... (Or
switch to RIO).
------------------------------------------------------------------------
Fixed bugs and restrictions:
- Hangup processing.
-- Done.
- the write path in generic_serial (lockup / oops).
-- Done (Ugly: not the way I want it. Copied from serial.c).
- write buffer isn't flushed at close.
-- Done. I still seem to lose a few chars at close.
Sorry. I think that this is a firmware issue. (-> Specialix)
- drain hardware before changing termios
- Change debug on the fly.
- ISA free irq -1. (no firmware loaded).
- adding c8000 as a probe address. Added warning.
- Add a RAMtest for the RAM on the card.c
- Crash when opening a port "way" of the number of allowed ports.
(for example opening port 60 when there are only 24 ports attached)
- Sometimes the use-count strays a bit. After a few hours of
testing the use count is sometimes "3". If you are not like
me and can remember what you did to get it that way, I'd
appreciate an Email. Possibly fixed. Tell me if anyone still
sees this.
- TAs don't work right if you don't connect all the modem control
signals. SXDCs do. T225 firmware problem -> Specialix.
(Mostly fixed now, I think. Tell me if you encounter this!)
Bugs & restrictions:
- Arbitrary baud rates. Requires firmware update. (-> Specialix)
- Low latency (mostly firmware, -> Specialix)

View File

@ -39,7 +39,7 @@ Procedure for submitting patches to the -stable tree:
the stable tree without anything else needing to be done by the author
or subsystem maintainer.
- If the patch requires other patches as prerequisites which can be
cherry-picked than this can be specified in the following format in
cherry-picked, then this can be specified in the following format in
the sign-off area:
Cc: <stable@vger.kernel.org> # 3.3.x: a1f84a3: sched: Check for idle

View File

@ -174,7 +174,6 @@ Components of Memory Policies
allocation fails, the kernel will search other nodes, in order of
increasing distance from the preferred node based on information
provided by the platform firmware.
containing the cpu where the allocation takes place.
Internally, the Preferred policy uses a single node--the
preferred_node member of struct mempolicy. When the internal
@ -275,9 +274,9 @@ Components of Memory Policies
For example, consider a task that is attached to a cpuset with
mems 2-5 that sets an Interleave policy over the same set with
MPOL_F_RELATIVE_NODES. If the cpuset's mems change to 3-7, the
interleave now occurs over nodes 3,5-6. If the cpuset's mems
interleave now occurs over nodes 3,5-7. If the cpuset's mems
then change to 0,2-3,5, then the interleave occurs over nodes
0,3,5.
0,2-3,5.
Thanks to the consistent remapping, applications preparing
nodemasks to specify memory policies using this flag should

View File

@ -237,7 +237,7 @@ kernel.org网站的pub/linux/kernel/v2.6/目录下找到它。它的开发遵循
如果没有2.6.x.y版本内核存在那么最新的2.6.x版本内核就相当于是当前的稳定
版内核。
2.6.x.y版本由“稳定版”小组邮件地址<stable@kernel.org>)维护,一般隔周发
2.6.x.y版本由“稳定版”小组邮件地址<stable@vger.kernel.org>)维护,一般隔周发
布新版本。
内核源码中的Documentation/stable_kernel_rules.txt文件具体描述了可被稳定

View File

@ -0,0 +1,67 @@
Chinese translated version of Documentation/io_orderings.txt
If you have any comment or update to the content, please contact the
original document maintainer directly. However, if you have a problem
communicating in English you can also ask the Chinese maintainer for
help. Contact the Chinese maintainer if this translation is outdated
or if there is a problem with the translation.
Chinese maintainer: Lin Yongting <linyongting@gmail.com>
---------------------------------------------------------------------
Documentation/io_ordering.txt 的中文翻译
如果想评论或更新本文的内容,请直接联系原文档的维护者。如果你使用英文
交流有困难的话,也可以向中文版维护者求助。如果本翻译更新不及时或者翻
译存在问题,请联系中文版维护者。
中文版维护者: 林永听 Lin Yongting <linyongting@gmail.com>
中文版翻译者: 林永听 Lin Yongting <linyongting@gmail.com>
中文版校译者: 林永听 Lin Yongting <linyongting@gmail.com>
以下为正文
---------------------------------------------------------------------
在某些平台上所谓的内存映射I/O是弱顺序。在这些平台上驱动开发者有责任
保证I/O内存映射地址的写操作按程序图意的顺序达到设备。通常读取一个“安全”
设备寄存器或桥寄存器触发IO芯片清刷未处理的写操作到达设备后才处理读操作
而达到保证目的。驱动程序通常在spinlock保护的临界区退出之前使用这种技术。
这也可以保证后面的写操作只在前面的写操作之后到达设备(这非常类似于内存
屏障操作mb()不过仅适用于I/O
假设一个设备驱动程的具体例子:
...
CPU A: spin_lock_irqsave(&dev_lock, flags)
CPU A: val = readl(my_status);
CPU A: ...
CPU A: writel(newval, ring_ptr);
CPU A: spin_unlock_irqrestore(&dev_lock, flags)
...
CPU B: spin_lock_irqsave(&dev_lock, flags)
CPU B: val = readl(my_status);
CPU B: ...
CPU B: writel(newval2, ring_ptr);
CPU B: spin_unlock_irqrestore(&dev_lock, flags)
...
上述例子中设备可能会先接收到newval2的值然后接收到newval的值问题就
发生了。不过很容易通过下面方法来修复:
...
CPU A: spin_lock_irqsave(&dev_lock, flags)
CPU A: val = readl(my_status);
CPU A: ...
CPU A: writel(newval, ring_ptr);
CPU A: (void)readl(safe_register); /* 配置寄存器?*/
CPU A: spin_unlock_irqrestore(&dev_lock, flags)
...
CPU B: spin_lock_irqsave(&dev_lock, flags)
CPU B: val = readl(my_status);
CPU B: ...
CPU B: writel(newval2, ring_ptr);
CPU B: (void)readl(safe_register); /* 配置寄存器?*/
CPU B: spin_unlock_irqrestore(&dev_lock, flags)
在解决方案中读取safe_register寄存器触发IO芯片清刷未处理的写操作
再处理后面的读操作,防止引发数据不一致问题。

View File

@ -63,8 +63,6 @@ struct tty_ldisc {
PG_MAGIC 'P' pg_{read,write}_hdr include/linux/pg.h
CMAGIC 0x0111 user include/linux/a.out.h
MKISS_DRIVER_MAGIC 0x04bf mkiss_channel drivers/net/mkiss.h
RISCOM8_MAGIC 0x0907 riscom_port drivers/char/riscom8.h
SPECIALIX_MAGIC 0x0907 specialix_port drivers/char/specialix_io8.h
HDLC_MAGIC 0x239e n_hdlc drivers/char/n_hdlc.c
APM_BIOS_MAGIC 0x4101 apm_user arch/x86/kernel/apm_32.c
CYCLADES_MAGIC 0x4359 cyclades_port include/linux/cyclades.h
@ -82,7 +80,6 @@ STRIP_MAGIC 0x5303 strip drivers/net/strip.c
X25_ASY_MAGIC 0x5303 x25_asy drivers/net/x25_asy.h
SIXPACK_MAGIC 0x5304 sixpack drivers/net/hamradio/6pack.h
AX25_MAGIC 0x5316 ax_disp drivers/net/mkiss.h
ESP_MAGIC 0x53ee esp_struct drivers/char/esp.h
TTY_MAGIC 0x5401 tty_struct include/linux/tty.h
MGSL_MAGIC 0x5401 mgsl_info drivers/char/synclink.c
TTY_DRIVER_MAGIC 0x5402 tty_driver include/linux/tty_driver.h
@ -94,13 +91,10 @@ USB_BLUETOOTH_MAGIC 0x6d02 usb_bluetooth drivers/usb/class/bluetty.c
RFCOMM_TTY_MAGIC 0x6d02 net/bluetooth/rfcomm/tty.c
USB_SERIAL_PORT_MAGIC 0x7301 usb_serial_port drivers/usb/serial/usb-serial.h
CG_MAGIC 0x00090255 ufs_cylinder_group include/linux/ufs_fs.h
A2232_MAGIC 0x000a2232 gs_port drivers/char/ser_a2232.h
RPORT_MAGIC 0x00525001 r_port drivers/char/rocket_int.h
LSEMAGIC 0x05091998 lse drivers/fc4/fc.c
GDTIOCTL_MAGIC 0x06030f07 gdth_iowr_str drivers/scsi/gdth_ioctl.h
RIEBL_MAGIC 0x09051990 drivers/net/atarilance.c
RIO_MAGIC 0x12345678 gs_port drivers/char/rio/rio_linux.c
SX_MAGIC 0x12345678 gs_port drivers/char/sx.h
NBD_REQUEST_MAGIC 0x12560953 nbd_request include/linux/nbd.h
RED_MAGIC2 0x170fc2a5 (any) mm/slab.c
BAYCOM_MAGIC 0x19730510 baycom_state drivers/net/baycom_epp.c
@ -116,7 +110,6 @@ ISDN_ASYNC_MAGIC 0x49344C01 modem_info include/linux/isdn.h
CTC_ASYNC_MAGIC 0x49344C01 ctc_tty_info drivers/s390/net/ctctty.c
ISDN_NET_MAGIC 0x49344C02 isdn_net_local_s drivers/isdn/i4l/isdn_net_lib.h
SAVEKMSG_MAGIC2 0x4B4D5347 savekmsg arch/*/amiga/config.c
STLI_BOARDMAGIC 0x4bc6c825 stlibrd include/linux/istallion.h
CS_STATE_MAGIC 0x4c4f4749 cs_state sound/oss/cs46xx.c
SLAB_C_MAGIC 0x4f17a36d kmem_cache mm/slab.c
COW_MAGIC 0x4f4f4f4d cow_header_v1 arch/um/drivers/ubd_user.c
@ -127,10 +120,8 @@ SCC_MAGIC 0x52696368 gs_port drivers/char/scc.h
SAVEKMSG_MAGIC1 0x53415645 savekmsg arch/*/amiga/config.c
GDA_MAGIC 0x58464552 gda arch/mips/include/asm/sn/gda.h
RED_MAGIC1 0x5a2cf071 (any) mm/slab.c
STL_PORTMAGIC 0x5a7182c9 stlport include/linux/stallion.h
EEPROM_MAGIC_VALUE 0x5ab478d2 lanai_dev drivers/atm/lanai.c
HDLCDRV_MAGIC 0x5ac6e778 hdlcdrv_state include/linux/hdlcdrv.h
EPCA_MAGIC 0x5c6df104 channel include/linux/epca.h
PCXX_MAGIC 0x5c6df104 channel drivers/char/pcxx.h
KV_MAGIC 0x5f4b565f kernel_vars_s arch/mips/include/asm/sn/klkernvars.h
I810_STATE_MAGIC 0x63657373 i810_state sound/oss/i810_audio.c
@ -142,17 +133,14 @@ SLOT_MAGIC 0x67267322 slot drivers/hotplug/acpiphp.h
LO_MAGIC 0x68797548 nbd_device include/linux/nbd.h
OPROFILE_MAGIC 0x6f70726f super_block drivers/oprofile/oprofilefs.h
M3_STATE_MAGIC 0x734d724d m3_state sound/oss/maestro3.c
STL_PANELMAGIC 0x7ef621a1 stlpanel include/linux/stallion.h
VMALLOC_MAGIC 0x87654320 snd_alloc_track sound/core/memory.c
KMALLOC_MAGIC 0x87654321 snd_alloc_track sound/core/memory.c
PWC_MAGIC 0x89DC10AB pwc_device drivers/usb/media/pwc.h
NBD_REPLY_MAGIC 0x96744668 nbd_reply include/linux/nbd.h
STL_BOARDMAGIC 0xa2267f52 stlbrd include/linux/stallion.h
ENI155_MAGIC 0xa54b872d midway_eprom drivers/atm/eni.h
SCI_MAGIC 0xbabeface gs_port drivers/char/sh-sci.h
CODA_MAGIC 0xC0DAC0DA coda_file_info include/linux/coda_fs_i.h
DPMEM_MAGIC 0xc0ffee11 gdt_pci_sram drivers/scsi/gdth.h
STLI_PORTMAGIC 0xe671c7a1 stliport include/linux/istallion.h
YAM_MAGIC 0xF10A7654 yam_port drivers/net/hamradio/yam.c
CCB_MAGIC 0xf2691ad2 ccb drivers/scsi/ncr53c8xx.c
QUEUE_MAGIC_FREE 0xf7e1c9a3 queue_entry drivers/scsi/arm/queue.c

View File

@ -42,7 +42,7 @@ Documentation/stable_kernel_rules.txt 的中文翻译
向稳定版代码树提交补丁的过程:
- 在确认了补丁符合以上的规则后将补丁发送到stable@kernel.org。
- 在确认了补丁符合以上的规则后将补丁发送到stable@vger.kernel.org。
- 如果补丁被接受到队列里发送者会收到一个ACK回复如果没有被接受
到的是NAK回复。回复需要几天的时间这取决于开发者的时间安排。
- 被接受的补丁会被加到稳定版本队列里,等待其他开发者的审查。

View File

@ -6782,7 +6782,7 @@ PERFORMANCE EVENTS SUBSYSTEM
M: Peter Zijlstra <a.p.zijlstra@chello.nl>
M: Paul Mackerras <paulus@samba.org>
M: Ingo Molnar <mingo@redhat.com>
M: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
M: Arnaldo Carvalho de Melo <acme@kernel.org>
L: linux-kernel@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf/core
S: Supported
@ -8315,7 +8315,7 @@ F: include/linux/compiler.h
SPEAR PLATFORM SUPPORT
M: Viresh Kumar <viresh.linux@gmail.com>
M: Shiraz Hashim <shiraz.hashim@st.com>
M: Shiraz Hashim <shiraz.linux.kernel@gmail.com>
L: spear-devel@list.st.com
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
W: http://www.st.com/spear

View File

@ -1,7 +1,7 @@
VERSION = 3
PATCHLEVEL = 15
SUBLEVEL = 0
EXTRAVERSION = -rc1
EXTRAVERSION = -rc2
NAME = Shuffling Zombie Juror
# *DOCUMENTATION*

View File

@ -1,37 +0,0 @@
/*
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM_BARRIER_H
#define __ASM_BARRIER_H
#ifndef __ASSEMBLY__
/* TODO-vineetg: Need to see what this does, don't we need sync anywhere */
#define mb() __asm__ __volatile__ ("" : : : "memory")
#define rmb() mb()
#define wmb() mb()
#define set_mb(var, value) do { var = value; mb(); } while (0)
#define set_wmb(var, value) do { var = value; wmb(); } while (0)
#define read_barrier_depends() mb()
/* TODO-vineetg verify the correctness of macros here */
#ifdef CONFIG_SMP
#define smp_mb() mb()
#define smp_rmb() rmb()
#define smp_wmb() wmb()
#else
#define smp_mb() barrier()
#define smp_rmb() barrier()
#define smp_wmb() barrier()
#endif
#define smp_read_barrier_depends() do { } while (0)
#endif
#endif

View File

@ -1,7 +1,7 @@
/*
* DTS file for SPEAr320 Evaluation Baord
*
* Copyright 2012 Shiraz Hashim <shiraz.hashim@st.com>
* Copyright 2012 Shiraz Hashim <shiraz.linux.kernel@gmail.com>
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License

View File

@ -132,7 +132,7 @@ CONFIG_CRC_ITU_T=y
CONFIG_CRC7=y
CONFIG_XZ_DEC=y
CONFIG_AVERAGE=y
CONFIG_PINCTRL_CAPRI=y
CONFIG_PINCTRL_BCM281XX=y
CONFIG_WATCHDOG=y
CONFIG_BCM_KONA_WDT=y
CONFIG_BCM_KONA_WDT_DEBUG=y

View File

@ -3,7 +3,7 @@
*
* Picked from realview
* Copyright (c) 2012 ST Microelectronics Limited
* Shiraz Hashim <shiraz.hashim@st.com>
* Shiraz Hashim <shiraz.linux.kernel@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as

View File

@ -4,7 +4,7 @@
* based upon linux/arch/arm/mach-realview/platsmp.c
*
* Copyright (C) 2012 ST Microelectronics Ltd.
* Shiraz Hashim <shiraz.hashim@st.com>
* Shiraz Hashim <shiraz.linux.kernel@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as

View File

@ -2,7 +2,7 @@
* arch/arm/plat-spear/time.c
*
* Copyright (C) 2010 ST Microelectronics
* Shiraz Hashim<shiraz.hashim@st.com>
* Shiraz Hashim<shiraz.linux.kernel@gmail.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any

View File

@ -259,7 +259,7 @@ start_ap:
* Switch into virtual mode:
*/
movl r16=(IA64_PSR_IT|IA64_PSR_IC|IA64_PSR_DT|IA64_PSR_RT|IA64_PSR_DFH|IA64_PSR_BN \
|IA64_PSR_DI|IA64_PSR_AC)
|IA64_PSR_DI)
;;
mov cr.ipsr=r16
movl r17=1f

View File

@ -58,7 +58,7 @@
#include <asm/unistd.h>
#include <asm/errno.h>
#if 1
#if 0
# define PSR_DEFAULT_BITS psr.ac
#else
# define PSR_DEFAULT_BITS 0

View File

@ -64,7 +64,7 @@
#include "kvm_minstate.h"
#include "vti.h"
#if 1
#if 0
# define PSR_DEFAULT_BITS psr.ac
#else
# define PSR_DEFAULT_BITS 0

View File

@ -29,15 +29,15 @@ void (*flush_cache_range)(struct vm_area_struct *vma, unsigned long start,
void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page,
unsigned long pfn);
void (*flush_icache_range)(unsigned long start, unsigned long end);
EXPORT_SYMBOL_GPL(flush_icache_range);
void (*local_flush_icache_range)(unsigned long start, unsigned long end);
void (*__flush_cache_vmap)(void);
void (*__flush_cache_vunmap)(void);
void (*__flush_kernel_vmap_range)(unsigned long vaddr, int size);
void (*__invalidate_kernel_vmap_range)(unsigned long vaddr, int size);
EXPORT_SYMBOL_GPL(__flush_kernel_vmap_range);
void (*__invalidate_kernel_vmap_range)(unsigned long vaddr, int size);
/* MIPS specific cache operations */
void (*flush_cache_sigtramp)(unsigned long addr);

View File

@ -1,8 +1,7 @@
#ifndef _ASMPARISC_SHMPARAM_H
#define _ASMPARISC_SHMPARAM_H
#define __ARCH_FORCE_SHMLBA 1
#define SHMLBA 0x00400000 /* attach addr needs to be 4 Mb aligned */
#define SHMLBA PAGE_SIZE /* attach addr a multiple of this */
#define SHM_COLOUR 0x00400000 /* shared mappings colouring */
#endif /* _ASMPARISC_SHMPARAM_H */

View File

@ -323,7 +323,8 @@ void flush_dcache_page(struct page *page)
* specifically accesses it, of course) */
flush_tlb_page(mpnt, addr);
if (old_addr == 0 || (old_addr & (SHMLBA - 1)) != (addr & (SHMLBA - 1))) {
if (old_addr == 0 || (old_addr & (SHM_COLOUR - 1))
!= (addr & (SHM_COLOUR - 1))) {
__flush_cache_page(mpnt, addr, page_to_phys(page));
if (old_addr)
printk(KERN_ERR "INEQUIVALENT ALIASES 0x%lx and 0x%lx in file %s\n", old_addr, addr, mpnt->vm_file ? (char *)mpnt->vm_file->f_path.dentry->d_name.name : "(null)");

View File

@ -45,7 +45,7 @@
static int get_offset(unsigned int last_mmap)
{
return (last_mmap & (SHMLBA-1)) >> PAGE_SHIFT;
return (last_mmap & (SHM_COLOUR-1)) >> PAGE_SHIFT;
}
static unsigned long shared_align_offset(unsigned int last_mmap,
@ -57,8 +57,8 @@ static unsigned long shared_align_offset(unsigned int last_mmap,
static inline unsigned long COLOR_ALIGN(unsigned long addr,
unsigned int last_mmap, unsigned long pgoff)
{
unsigned long base = (addr+SHMLBA-1) & ~(SHMLBA-1);
unsigned long off = (SHMLBA-1) &
unsigned long base = (addr+SHM_COLOUR-1) & ~(SHM_COLOUR-1);
unsigned long off = (SHM_COLOUR-1) &
(shared_align_offset(last_mmap, pgoff) << PAGE_SHIFT);
return base + off;
@ -101,7 +101,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
if (flags & MAP_FIXED) {
if ((flags & MAP_SHARED) && last_mmap &&
(addr - shared_align_offset(last_mmap, pgoff))
& (SHMLBA - 1))
& (SHM_COLOUR - 1))
return -EINVAL;
goto found_addr;
}
@ -122,7 +122,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
info.length = len;
info.low_limit = mm->mmap_legacy_base;
info.high_limit = mmap_upper_limit();
info.align_mask = last_mmap ? (PAGE_MASK & (SHMLBA - 1)) : 0;
info.align_mask = last_mmap ? (PAGE_MASK & (SHM_COLOUR - 1)) : 0;
info.align_offset = shared_align_offset(last_mmap, pgoff);
addr = vm_unmapped_area(&info);
@ -161,7 +161,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
if (flags & MAP_FIXED) {
if ((flags & MAP_SHARED) && last_mmap &&
(addr - shared_align_offset(last_mmap, pgoff))
& (SHMLBA - 1))
& (SHM_COLOUR - 1))
return -EINVAL;
goto found_addr;
}
@ -182,7 +182,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
info.length = len;
info.low_limit = PAGE_SIZE;
info.high_limit = mm->mmap_base;
info.align_mask = last_mmap ? (PAGE_MASK & (SHMLBA - 1)) : 0;
info.align_mask = last_mmap ? (PAGE_MASK & (SHM_COLOUR - 1)) : 0;
info.align_offset = shared_align_offset(last_mmap, pgoff);
addr = vm_unmapped_area(&info);
if (!(addr & ~PAGE_MASK))

View File

@ -392,7 +392,7 @@
ENTRY_COMP(vmsplice)
ENTRY_COMP(move_pages) /* 295 */
ENTRY_SAME(getcpu)
ENTRY_SAME(epoll_pwait)
ENTRY_COMP(epoll_pwait)
ENTRY_COMP(statfs64)
ENTRY_COMP(fstatfs64)
ENTRY_COMP(kexec_load) /* 300 */

View File

@ -470,7 +470,7 @@ static unsigned long pa_memcpy(void *dstp, const void *srcp, unsigned long len)
return 0;
/* if a load or store fault occured we can get the faulty addr */
d = &__get_cpu_var(exception_data);
d = this_cpu_ptr(&exception_data);
fault_addr = d->fault_addr;
/* error in load or store? */

View File

@ -151,7 +151,7 @@ int fixup_exception(struct pt_regs *regs)
fix = search_exception_tables(regs->iaoq[0]);
if (fix) {
struct exception_data *d;
d = &__get_cpu_var(exception_data);
d = this_cpu_ptr(&exception_data);
d->fault_ip = regs->iaoq[0];
d->fault_space = regs->isr;
d->fault_addr = regs->ior;

View File

@ -208,7 +208,7 @@ long sys_pciconfig_iobase(long which, unsigned long in_bus,
unsigned long in_devfn)
{
struct pci_controller* hose;
struct pci_bus *bus = NULL;
struct pci_bus *tmp_bus, *bus = NULL;
struct device_node *hose_node;
/* Argh ! Please forgive me for that hack, but that's the
@ -229,10 +229,12 @@ long sys_pciconfig_iobase(long which, unsigned long in_bus,
* used on pre-domains setup. We return the first match
*/
list_for_each_entry(bus, &pci_root_buses, node) {
if (in_bus >= bus->number && in_bus <= bus->busn_res.end)
list_for_each_entry(tmp_bus, &pci_root_buses, node) {
if (in_bus >= tmp_bus->number &&
in_bus <= tmp_bus->busn_res.end) {
bus = tmp_bus;
break;
bus = NULL;
}
}
if (bus == NULL || bus->dev.of_node == NULL)
return -ENODEV;

View File

@ -232,6 +232,7 @@ int __node_distance(int a, int b)
return distance;
}
EXPORT_SYMBOL(__node_distance);
static void initialize_distance_lookup_table(int nid,
const __be32 *associativity)

View File

@ -31,4 +31,23 @@
#define SIGP_STATUS_INCORRECT_STATE 0x00000200UL
#define SIGP_STATUS_NOT_RUNNING 0x00000400UL
#ifndef __ASSEMBLY__
static inline int __pcpu_sigp(u16 addr, u8 order, u32 parm, u32 *status)
{
register unsigned int reg1 asm ("1") = parm;
int cc;
asm volatile(
" sigp %1,%2,0(%3)\n"
" ipm %0\n"
" srl %0,28\n"
: "=d" (cc), "+d" (reg1) : "d" (addr), "a" (order) : "cc");
if (status && cc == 1)
*status = reg1;
return cc;
}
#endif /* __ASSEMBLY__ */
#endif /* __S390_ASM_SIGP_H */

View File

@ -7,6 +7,8 @@
#ifndef __ASM_SMP_H
#define __ASM_SMP_H
#include <asm/sigp.h>
#ifdef CONFIG_SMP
#include <asm/lowcore.h>
@ -50,9 +52,18 @@ static inline int smp_store_status(int cpu) { return 0; }
static inline int smp_vcpu_scheduled(int cpu) { return 1; }
static inline void smp_yield_cpu(int cpu) { }
static inline void smp_yield(void) { }
static inline void smp_stop_cpu(void) { }
static inline void smp_fill_possible_mask(void) { }
static inline void smp_stop_cpu(void)
{
u16 pcpu = stap();
for (;;) {
__pcpu_sigp(pcpu, SIGP_STOP, 0, NULL);
cpu_relax();
}
}
#endif /* CONFIG_SMP */
#ifdef CONFIG_HOTPLUG_CPU

View File

@ -282,7 +282,8 @@
#define __NR_finit_module 344
#define __NR_sched_setattr 345
#define __NR_sched_getattr 346
#define NR_syscalls 345
#define __NR_renameat2 347
#define NR_syscalls 348
/*
* There are some system calls that are not present on 64 bit, some

View File

@ -1,5 +1,5 @@
/*
* Compat sytem call wrappers.
* Compat system call wrappers.
*
* Copyright IBM Corp. 2014
*/
@ -213,3 +213,4 @@ COMPAT_SYSCALL_WRAP5(kcmp, pid_t, pid1, pid_t, pid2, int, type, unsigned long, i
COMPAT_SYSCALL_WRAP3(finit_module, int, fd, const char __user *, uargs, int, flags);
COMPAT_SYSCALL_WRAP3(sched_setattr, pid_t, pid, struct sched_attr __user *, attr, unsigned int, flags);
COMPAT_SYSCALL_WRAP4(sched_getattr, pid_t, pid, struct sched_attr __user *, attr, unsigned int, size, unsigned int, flags);
COMPAT_SYSCALL_WRAP5(renameat2, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname, unsigned int, flags);

View File

@ -144,10 +144,10 @@ void show_registers(struct pt_regs *regs)
char *mode;
mode = user_mode(regs) ? "User" : "Krnl";
printk("%s PSW : %p %p (%pSR)\n",
mode, (void *) regs->psw.mask,
(void *) regs->psw.addr,
(void *) regs->psw.addr);
printk("%s PSW : %p %p", mode, (void *)regs->psw.mask, (void *)regs->psw.addr);
if (!user_mode(regs))
printk(" (%pSR)", (void *)regs->psw.addr);
printk("\n");
printk(" R:%x T:%x IO:%x EX:%x Key:%x M:%x W:%x "
"P:%x AS:%x CC:%x PM:%x", mask_bits(regs, PSW_MASK_PER),
mask_bits(regs, PSW_MASK_DAT), mask_bits(regs, PSW_MASK_IO),

View File

@ -64,7 +64,7 @@ void update_cr_regs(struct task_struct *task)
if (task->thread.per_flags & PER_FLAG_NO_TE)
cr_new &= ~(1UL << 55);
if (cr_new != cr)
__ctl_load(cr, 0, 0);
__ctl_load(cr_new, 0, 0);
/* Set or clear transaction execution TDC bits 62 and 63. */
__ctl_store(cr, 2, 2);
cr_new = cr & ~3UL;

View File

@ -1027,3 +1027,35 @@ void __init setup_arch(char **cmdline_p)
/* Setup zfcpdump support */
setup_zfcpdump();
}
#ifdef CONFIG_32BIT
static int no_removal_warning __initdata;
static int __init parse_no_removal_warning(char *str)
{
no_removal_warning = 1;
return 0;
}
__setup("no_removal_warning", parse_no_removal_warning);
static int __init removal_warning(void)
{
if (no_removal_warning)
return 0;
printk(KERN_ALERT "\n\n");
printk(KERN_CONT "Warning - you are using a 31 bit kernel!\n\n");
printk(KERN_CONT "We plan to remove 31 bit kernel support from the kernel sources in March 2015.\n");
printk(KERN_CONT "Currently we assume that nobody is using the 31 bit kernel on old 31 bit\n");
printk(KERN_CONT "hardware anymore. If you think that the code should not be removed and also\n");
printk(KERN_CONT "future versions of the Linux kernel should be able to run in 31 bit mode\n");
printk(KERN_CONT "please let us know. Please write to:\n");
printk(KERN_CONT "linux390@de.ibm.com (mail address) and/or\n");
printk(KERN_CONT "linux-s390@vger.kernel.org (mailing list).\n\n");
printk(KERN_CONT "Thank you!\n\n");
printk(KERN_CONT "If this kernel runs on a 64 bit machine you may consider using a 64 bit kernel.\n");
printk(KERN_CONT "This message can be disabled with the \"no_removal_warning\" kernel parameter.\n");
schedule_timeout_uninterruptible(300 * HZ);
return 0;
}
early_initcall(removal_warning);
#endif

View File

@ -82,21 +82,6 @@ DEFINE_MUTEX(smp_cpu_state_mutex);
/*
* Signal processor helper functions.
*/
static inline int __pcpu_sigp(u16 addr, u8 order, u32 parm, u32 *status)
{
register unsigned int reg1 asm ("1") = parm;
int cc;
asm volatile(
" sigp %1,%2,0(%3)\n"
" ipm %0\n"
" srl %0,28\n"
: "=d" (cc), "+d" (reg1) : "d" (addr), "a" (order) : "cc");
if (status && cc == 1)
*status = reg1;
return cc;
}
static inline int __pcpu_sigp_relax(u16 addr, u8 order, u32 parm, u32 *status)
{
int cc;

View File

@ -355,3 +355,4 @@ SYSCALL(sys_kcmp,sys_kcmp,compat_sys_kcmp)
SYSCALL(sys_finit_module,sys_finit_module,compat_sys_finit_module)
SYSCALL(sys_sched_setattr,sys_sched_setattr,compat_sys_sched_setattr) /* 345 */
SYSCALL(sys_sched_getattr,sys_sched_getattr,compat_sys_sched_getattr)
SYSCALL(sys_renameat2,sys_renameat2,compat_sys_renameat2)

View File

@ -338,9 +338,6 @@ static inline unsigned long strnlen_user_srst(const char __user *src,
register unsigned long reg0 asm("0") = 0;
unsigned long tmp1, tmp2;
if (unlikely(!size))
return 0;
update_primary_asce(current);
asm volatile(
" la %2,0(%1)\n"
" la %3,0(%0,%1)\n"
@ -359,6 +356,8 @@ static inline unsigned long strnlen_user_srst(const char __user *src,
unsigned long __strnlen_user(const char __user *src, unsigned long size)
{
if (unlikely(!size))
return 0;
update_primary_asce(current);
return strnlen_user_srst(src, size);
}

View File

@ -126,6 +126,133 @@ static inline int user_space_fault(struct pt_regs *regs)
return 0;
}
static int bad_address(void *p)
{
unsigned long dummy;
return probe_kernel_address((unsigned long *)p, dummy);
}
#ifdef CONFIG_64BIT
static void dump_pagetable(unsigned long asce, unsigned long address)
{
unsigned long *table = __va(asce & PAGE_MASK);
pr_alert("AS:%016lx ", asce);
switch (asce & _ASCE_TYPE_MASK) {
case _ASCE_TYPE_REGION1:
table = table + ((address >> 53) & 0x7ff);
if (bad_address(table))
goto bad;
pr_cont("R1:%016lx ", *table);
if (*table & _REGION_ENTRY_INVALID)
goto out;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
/* fallthrough */
case _ASCE_TYPE_REGION2:
table = table + ((address >> 42) & 0x7ff);
if (bad_address(table))
goto bad;
pr_cont("R2:%016lx ", *table);
if (*table & _REGION_ENTRY_INVALID)
goto out;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
/* fallthrough */
case _ASCE_TYPE_REGION3:
table = table + ((address >> 31) & 0x7ff);
if (bad_address(table))
goto bad;
pr_cont("R3:%016lx ", *table);
if (*table & (_REGION_ENTRY_INVALID | _REGION3_ENTRY_LARGE))
goto out;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
/* fallthrough */
case _ASCE_TYPE_SEGMENT:
table = table + ((address >> 20) & 0x7ff);
if (bad_address(table))
goto bad;
pr_cont(KERN_CONT "S:%016lx ", *table);
if (*table & (_SEGMENT_ENTRY_INVALID | _SEGMENT_ENTRY_LARGE))
goto out;
table = (unsigned long *)(*table & _SEGMENT_ENTRY_ORIGIN);
}
table = table + ((address >> 12) & 0xff);
if (bad_address(table))
goto bad;
pr_cont("P:%016lx ", *table);
out:
pr_cont("\n");
return;
bad:
pr_cont("BAD\n");
}
#else /* CONFIG_64BIT */
static void dump_pagetable(unsigned long asce, unsigned long address)
{
unsigned long *table = __va(asce & PAGE_MASK);
pr_alert("AS:%08lx ", asce);
table = table + ((address >> 20) & 0x7ff);
if (bad_address(table))
goto bad;
pr_cont("S:%08lx ", *table);
if (*table & _SEGMENT_ENTRY_INVALID)
goto out;
table = (unsigned long *)(*table & _SEGMENT_ENTRY_ORIGIN);
table = table + ((address >> 12) & 0xff);
if (bad_address(table))
goto bad;
pr_cont("P:%08lx ", *table);
out:
pr_cont("\n");
return;
bad:
pr_cont("BAD\n");
}
#endif /* CONFIG_64BIT */
static void dump_fault_info(struct pt_regs *regs)
{
unsigned long asce;
pr_alert("Fault in ");
switch (regs->int_parm_long & 3) {
case 3:
pr_cont("home space ");
break;
case 2:
pr_cont("secondary space ");
break;
case 1:
pr_cont("access register ");
break;
case 0:
pr_cont("primary space ");
break;
}
pr_cont("mode while using ");
if (!user_space_fault(regs)) {
asce = S390_lowcore.kernel_asce;
pr_cont("kernel ");
}
#ifdef CONFIG_PGSTE
else if ((current->flags & PF_VCPU) && S390_lowcore.gmap) {
struct gmap *gmap = (struct gmap *)S390_lowcore.gmap;
asce = gmap->asce;
pr_cont("gmap ");
}
#endif
else {
asce = S390_lowcore.user_asce;
pr_cont("user ");
}
pr_cont("ASCE.\n");
dump_pagetable(asce, regs->int_parm_long & __FAIL_ADDR_MASK);
}
static inline void report_user_fault(struct pt_regs *regs, long signr)
{
if ((task_pid_nr(current) > 1) && !show_unhandled_signals)
@ -138,8 +265,9 @@ static inline void report_user_fault(struct pt_regs *regs, long signr)
regs->int_code);
print_vma_addr(KERN_CONT "in ", regs->psw.addr & PSW_ADDR_INSN);
printk(KERN_CONT "\n");
printk(KERN_ALERT "failing address: %lX\n",
regs->int_parm_long & __FAIL_ADDR_MASK);
printk(KERN_ALERT "failing address: %016lx TEID: %016lx\n",
regs->int_parm_long & __FAIL_ADDR_MASK, regs->int_parm_long);
dump_fault_info(regs);
show_regs(regs);
}
@ -177,11 +305,13 @@ static noinline void do_no_context(struct pt_regs *regs)
address = regs->int_parm_long & __FAIL_ADDR_MASK;
if (!user_space_fault(regs))
printk(KERN_ALERT "Unable to handle kernel pointer dereference"
" at virtual kernel address %p\n", (void *)address);
" in virtual kernel address space\n");
else
printk(KERN_ALERT "Unable to handle kernel paging request"
" at virtual user address %p\n", (void *)address);
" in virtual user address space\n");
printk(KERN_ALERT "failing address: %016lx TEID: %016lx\n",
regs->int_parm_long & __FAIL_ADDR_MASK, regs->int_parm_long);
dump_fault_info(regs);
die(regs, "Oops");
do_exit(SIGKILL);
}

View File

@ -250,8 +250,8 @@ archclean:
PHONY += kvmconfig
kvmconfig:
$(if $(wildcard $(objtree)/.config),, $(error You need an existing .config for this target))
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m -O $(objtree) $(objtree)/.config arch/x86/configs/kvm_guest.config
$(Q)yes "" | $(MAKE) oldconfig
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m -O $(objtree) $(objtree)/.config $(srctree)/arch/x86/configs/kvm_guest.config
$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig
define archhelp
echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'

View File

@ -60,7 +60,7 @@
| X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
| X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \
| X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_FSGSBASE \
| X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
| X86_CR4_OSXMMEXCPT | X86_CR4_VMXE | X86_CR4_SMAP))
#define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)

View File

@ -598,7 +598,6 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b)
{
struct mce m;
int i;
unsigned long *v;
this_cpu_inc(mce_poll_count);
@ -618,8 +617,7 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b)
if (!(m.status & MCI_STATUS_VAL))
continue;
v = &get_cpu_var(mce_polled_error);
set_bit(0, v);
this_cpu_write(mce_polled_error, 1);
/*
* Uncorrected or signalled events are handled by the exception
* handler when it is enabled, so don't process those here.

View File

@ -42,7 +42,7 @@ static DEFINE_PER_CPU(mce_banks_t, mce_banks_owned);
* cmci_discover_lock protects against parallel discovery attempts
* which could race against each other.
*/
static DEFINE_RAW_SPINLOCK(cmci_discover_lock);
static DEFINE_SPINLOCK(cmci_discover_lock);
#define CMCI_THRESHOLD 1
#define CMCI_POLL_INTERVAL (30 * HZ)
@ -144,14 +144,14 @@ static void cmci_storm_disable_banks(void)
int bank;
u64 val;
raw_spin_lock_irqsave(&cmci_discover_lock, flags);
spin_lock_irqsave(&cmci_discover_lock, flags);
owned = __get_cpu_var(mce_banks_owned);
for_each_set_bit(bank, owned, MAX_NR_BANKS) {
rdmsrl(MSR_IA32_MCx_CTL2(bank), val);
val &= ~MCI_CTL2_CMCI_EN;
wrmsrl(MSR_IA32_MCx_CTL2(bank), val);
}
raw_spin_unlock_irqrestore(&cmci_discover_lock, flags);
spin_unlock_irqrestore(&cmci_discover_lock, flags);
}
static bool cmci_storm_detect(void)
@ -211,7 +211,7 @@ static void cmci_discover(int banks)
int i;
int bios_wrong_thresh = 0;
raw_spin_lock_irqsave(&cmci_discover_lock, flags);
spin_lock_irqsave(&cmci_discover_lock, flags);
for (i = 0; i < banks; i++) {
u64 val;
int bios_zero_thresh = 0;
@ -266,7 +266,7 @@ static void cmci_discover(int banks)
WARN_ON(!test_bit(i, __get_cpu_var(mce_poll_banks)));
}
}
raw_spin_unlock_irqrestore(&cmci_discover_lock, flags);
spin_unlock_irqrestore(&cmci_discover_lock, flags);
if (mca_cfg.bios_cmci_threshold && bios_wrong_thresh) {
pr_info_once(
"bios_cmci_threshold: Some banks do not have valid thresholds set\n");
@ -316,10 +316,10 @@ void cmci_clear(void)
if (!cmci_supported(&banks))
return;
raw_spin_lock_irqsave(&cmci_discover_lock, flags);
spin_lock_irqsave(&cmci_discover_lock, flags);
for (i = 0; i < banks; i++)
__cmci_disable_bank(i);
raw_spin_unlock_irqrestore(&cmci_discover_lock, flags);
spin_unlock_irqrestore(&cmci_discover_lock, flags);
}
static void cmci_rediscover_work_func(void *arg)
@ -360,9 +360,9 @@ void cmci_disable_bank(int bank)
if (!cmci_supported(&banks))
return;
raw_spin_lock_irqsave(&cmci_discover_lock, flags);
spin_lock_irqsave(&cmci_discover_lock, flags);
__cmci_disable_bank(bank);
raw_spin_unlock_irqrestore(&cmci_discover_lock, flags);
spin_unlock_irqrestore(&cmci_discover_lock, flags);
}
static void intel_init_cmci(void)

View File

@ -59,7 +59,7 @@
#define INTEL_RAPL_PKG 0x2 /* pseudo-encoding */
#define RAPL_IDX_RAM_NRG_STAT 2 /* DRAM */
#define INTEL_RAPL_RAM 0x3 /* pseudo-encoding */
#define RAPL_IDX_PP1_NRG_STAT 3 /* DRAM */
#define RAPL_IDX_PP1_NRG_STAT 3 /* gpu */
#define INTEL_RAPL_PP1 0x4 /* pseudo-encoding */
/* Clients have PP0, PKG */
@ -72,6 +72,12 @@
1<<RAPL_IDX_PKG_NRG_STAT|\
1<<RAPL_IDX_RAM_NRG_STAT)
/* Servers have PP0, PKG, RAM, PP1 */
#define RAPL_IDX_HSW (1<<RAPL_IDX_PP0_NRG_STAT|\
1<<RAPL_IDX_PKG_NRG_STAT|\
1<<RAPL_IDX_RAM_NRG_STAT|\
1<<RAPL_IDX_PP1_NRG_STAT)
/*
* event code: LSB 8 bits, passed in attr->config
* any other bit is reserved
@ -425,6 +431,24 @@ static struct attribute *rapl_events_cln_attr[] = {
NULL,
};
static struct attribute *rapl_events_hsw_attr[] = {
EVENT_PTR(rapl_cores),
EVENT_PTR(rapl_pkg),
EVENT_PTR(rapl_gpu),
EVENT_PTR(rapl_ram),
EVENT_PTR(rapl_cores_unit),
EVENT_PTR(rapl_pkg_unit),
EVENT_PTR(rapl_gpu_unit),
EVENT_PTR(rapl_ram_unit),
EVENT_PTR(rapl_cores_scale),
EVENT_PTR(rapl_pkg_scale),
EVENT_PTR(rapl_gpu_scale),
EVENT_PTR(rapl_ram_scale),
NULL,
};
static struct attribute_group rapl_pmu_events_group = {
.name = "events",
.attrs = NULL, /* patched at runtime */
@ -511,6 +535,7 @@ static int rapl_cpu_prepare(int cpu)
struct rapl_pmu *pmu = per_cpu(rapl_pmu, cpu);
int phys_id = topology_physical_package_id(cpu);
u64 ms;
u64 msr_rapl_power_unit_bits;
if (pmu)
return 0;
@ -518,6 +543,9 @@ static int rapl_cpu_prepare(int cpu)
if (phys_id < 0)
return -1;
if (!rdmsrl_safe(MSR_RAPL_POWER_UNIT, &msr_rapl_power_unit_bits))
return -1;
pmu = kzalloc_node(sizeof(*pmu), GFP_KERNEL, cpu_to_node(cpu));
if (!pmu)
return -1;
@ -531,8 +559,7 @@ static int rapl_cpu_prepare(int cpu)
*
* we cache in local PMU instance
*/
rdmsrl(MSR_RAPL_POWER_UNIT, pmu->hw_unit);
pmu->hw_unit = (pmu->hw_unit >> 8) & 0x1FULL;
pmu->hw_unit = (msr_rapl_power_unit_bits >> 8) & 0x1FULL;
pmu->pmu = &rapl_pmu_class;
/*
@ -631,11 +658,14 @@ static int __init rapl_pmu_init(void)
switch (boot_cpu_data.x86_model) {
case 42: /* Sandy Bridge */
case 58: /* Ivy Bridge */
case 60: /* Haswell */
case 69: /* Haswell-Celeron */
rapl_cntr_mask = RAPL_IDX_CLN;
rapl_pmu_events_group.attrs = rapl_events_cln_attr;
break;
case 60: /* Haswell */
case 69: /* Haswell-Celeron */
rapl_cntr_mask = RAPL_IDX_HSW;
rapl_pmu_events_group.attrs = rapl_events_hsw_attr;
break;
case 45: /* Sandy Bridge-EP */
case 62: /* IvyTown */
rapl_cntr_mask = RAPL_IDX_SRV;
@ -650,7 +680,9 @@ static int __init rapl_pmu_init(void)
cpu_notifier_register_begin();
for_each_online_cpu(cpu) {
rapl_cpu_prepare(cpu);
ret = rapl_cpu_prepare(cpu);
if (ret)
goto out;
rapl_cpu_init(cpu);
}
@ -673,6 +705,7 @@ static int __init rapl_pmu_init(void)
hweight32(rapl_cntr_mask),
ktime_to_ms(pmu->timer_interval));
out:
cpu_notifier_register_done();
return 0;

View File

@ -240,7 +240,7 @@ static u32 __init intel_stolen_base(int num, int slot, int func, size_t stolen_s
return base;
}
#define KB(x) ((x) * 1024)
#define KB(x) ((x) * 1024UL)
#define MB(x) (KB (KB (x)))
#define GB(x) (MB (KB (x)))

View File

@ -897,9 +897,10 @@ int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
struct kprobe *cur = kprobe_running();
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
switch (kcb->kprobe_status) {
case KPROBE_HIT_SS:
case KPROBE_REENTER:
if (unlikely(regs->ip == (unsigned long)cur->ainsn.insn)) {
/* This must happen on single-stepping */
WARN_ON(kcb->kprobe_status != KPROBE_HIT_SS &&
kcb->kprobe_status != KPROBE_REENTER);
/*
* We are here because the instruction being single
* stepped caused a page fault. We reset the current
@ -914,9 +915,8 @@ int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
else
reset_current_kprobe();
preempt_enable_no_resched();
break;
case KPROBE_HIT_ACTIVE:
case KPROBE_HIT_SSDONE:
} else if (kcb->kprobe_status == KPROBE_HIT_ACTIVE ||
kcb->kprobe_status == KPROBE_HIT_SSDONE) {
/*
* We increment the nmissed count for accounting,
* we can also use npre/npostfault count for accounting
@ -945,10 +945,8 @@ int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
* fixup routine could not handle it,
* Let do_page_fault() fix it.
*/
break;
default:
break;
}
return 0;
}

View File

@ -114,8 +114,8 @@ EXPORT_SYMBOL(machine_real_restart);
*/
static int __init set_pci_reboot(const struct dmi_system_id *d)
{
if (reboot_type != BOOT_CF9) {
reboot_type = BOOT_CF9;
if (reboot_type != BOOT_CF9_FORCE) {
reboot_type = BOOT_CF9_FORCE;
pr_info("%s series board detected. Selecting %s-method for reboots.\n",
d->ident, "PCI");
}
@ -458,20 +458,23 @@ void __attribute__((weak)) mach_reboot_fixups(void)
}
/*
* Windows compatible x86 hardware expects the following on reboot:
* To the best of our knowledge Windows compatible x86 hardware expects
* the following on reboot:
*
* 1) If the FADT has the ACPI reboot register flag set, try it
* 2) If still alive, write to the keyboard controller
* 3) If still alive, write to the ACPI reboot register again
* 4) If still alive, write to the keyboard controller again
* 5) If still alive, call the EFI runtime service to reboot
* 6) If still alive, write to the PCI IO port 0xCF9 to reboot
* 7) If still alive, inform BIOS to do a proper reboot
* 6) If no EFI runtime service, call the BIOS to do a reboot
*
* If the machine is still alive at this stage, it gives up. We default to
* following the same pattern, except that if we're still alive after (7) we'll
* try to force a triple fault and then cycle between hitting the keyboard
* controller and doing that
* We default to following the same pattern. We also have
* two other reboot methods: 'triple fault' and 'PCI', which
* can be triggered via the reboot= kernel boot option or
* via quirks.
*
* This means that this function can never return, it can misbehave
* by not rebooting properly and hanging.
*/
static void native_machine_emergency_restart(void)
{
@ -492,6 +495,11 @@ static void native_machine_emergency_restart(void)
for (;;) {
/* Could also try the reset bit in the Hammer NB */
switch (reboot_type) {
case BOOT_ACPI:
acpi_reboot();
reboot_type = BOOT_KBD;
break;
case BOOT_KBD:
mach_reboot_fixups(); /* For board specific fixups */
@ -509,43 +517,29 @@ static void native_machine_emergency_restart(void)
}
break;
case BOOT_TRIPLE:
load_idt(&no_idt);
__asm__ __volatile__("int3");
/* We're probably dead after this, but... */
reboot_type = BOOT_KBD;
break;
case BOOT_BIOS:
machine_real_restart(MRR_BIOS);
/* We're probably dead after this, but... */
reboot_type = BOOT_TRIPLE;
break;
case BOOT_ACPI:
acpi_reboot();
reboot_type = BOOT_KBD;
break;
case BOOT_EFI:
if (efi_enabled(EFI_RUNTIME_SERVICES))
efi.reset_system(reboot_mode == REBOOT_WARM ?
EFI_RESET_WARM :
EFI_RESET_COLD,
EFI_SUCCESS, 0, NULL);
reboot_type = BOOT_CF9_COND;
reboot_type = BOOT_BIOS;
break;
case BOOT_CF9:
case BOOT_BIOS:
machine_real_restart(MRR_BIOS);
/* We're probably dead after this, but... */
reboot_type = BOOT_CF9_SAFE;
break;
case BOOT_CF9_FORCE:
port_cf9_safe = true;
/* Fall through */
case BOOT_CF9_COND:
case BOOT_CF9_SAFE:
if (port_cf9_safe) {
u8 reboot_code = reboot_mode == REBOOT_WARM ?
0x06 : 0x0E;
u8 reboot_code = reboot_mode == REBOOT_WARM ? 0x06 : 0x0E;
u8 cf9 = inb(0xcf9) & ~reboot_code;
outb(cf9|2, 0xcf9); /* Request hard reset */
udelay(50);
@ -553,7 +547,15 @@ static void native_machine_emergency_restart(void)
outb(cf9|reboot_code, 0xcf9);
udelay(50);
}
reboot_type = BOOT_BIOS;
reboot_type = BOOT_TRIPLE;
break;
case BOOT_TRIPLE:
load_idt(&no_idt);
__asm__ __volatile__("int3");
/* We're probably dead after this, but... */
reboot_type = BOOT_KBD;
break;
}
}

View File

@ -308,7 +308,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
const u32 kvm_supported_word9_x86_features =
F(FSGSBASE) | F(BMI1) | F(HLE) | F(AVX2) | F(SMEP) |
F(BMI2) | F(ERMS) | f_invpcid | F(RTM) | f_mpx | F(RDSEED) |
F(ADX);
F(ADX) | F(SMAP);
/* all calls to cpuid_count() should be made on the same cpu */
get_cpu();

View File

@ -48,6 +48,14 @@ static inline bool guest_cpuid_has_smep(struct kvm_vcpu *vcpu)
return best && (best->ebx & bit(X86_FEATURE_SMEP));
}
static inline bool guest_cpuid_has_smap(struct kvm_vcpu *vcpu)
{
struct kvm_cpuid_entry2 *best;
best = kvm_find_cpuid_entry(vcpu, 7, 0);
return best && (best->ebx & bit(X86_FEATURE_SMAP));
}
static inline bool guest_cpuid_has_fsgsbase(struct kvm_vcpu *vcpu)
{
struct kvm_cpuid_entry2 *best;

View File

@ -3601,20 +3601,27 @@ static void reset_rsvds_bits_mask_ept(struct kvm_vcpu *vcpu,
}
}
static void update_permission_bitmask(struct kvm_vcpu *vcpu,
void update_permission_bitmask(struct kvm_vcpu *vcpu,
struct kvm_mmu *mmu, bool ept)
{
unsigned bit, byte, pfec;
u8 map;
bool fault, x, w, u, wf, uf, ff, smep;
bool fault, x, w, u, wf, uf, ff, smapf, cr4_smap, cr4_smep, smap = 0;
smep = kvm_read_cr4_bits(vcpu, X86_CR4_SMEP);
cr4_smep = kvm_read_cr4_bits(vcpu, X86_CR4_SMEP);
cr4_smap = kvm_read_cr4_bits(vcpu, X86_CR4_SMAP);
for (byte = 0; byte < ARRAY_SIZE(mmu->permissions); ++byte) {
pfec = byte << 1;
map = 0;
wf = pfec & PFERR_WRITE_MASK;
uf = pfec & PFERR_USER_MASK;
ff = pfec & PFERR_FETCH_MASK;
/*
* PFERR_RSVD_MASK bit is set in PFEC if the access is not
* subject to SMAP restrictions, and cleared otherwise. The
* bit is only meaningful if the SMAP bit is set in CR4.
*/
smapf = !(pfec & PFERR_RSVD_MASK);
for (bit = 0; bit < 8; ++bit) {
x = bit & ACC_EXEC_MASK;
w = bit & ACC_WRITE_MASK;
@ -3626,12 +3633,33 @@ static void update_permission_bitmask(struct kvm_vcpu *vcpu,
/* Allow supervisor writes if !cr0.wp */
w |= !is_write_protection(vcpu) && !uf;
/* Disallow supervisor fetches of user code if cr4.smep */
x &= !(smep && u && !uf);
x &= !(cr4_smep && u && !uf);
/*
* SMAP:kernel-mode data accesses from user-mode
* mappings should fault. A fault is considered
* as a SMAP violation if all of the following
* conditions are ture:
* - X86_CR4_SMAP is set in CR4
* - An user page is accessed
* - Page fault in kernel mode
* - if CPL = 3 or X86_EFLAGS_AC is clear
*
* Here, we cover the first three conditions.
* The fourth is computed dynamically in
* permission_fault() and is in smapf.
*
* Also, SMAP does not affect instruction
* fetches, add the !ff check here to make it
* clearer.
*/
smap = cr4_smap && u && !uf && !ff;
} else
/* Not really needed: no U/S accesses on ept */
u = 1;
fault = (ff && !x) || (uf && !u) || (wf && !w);
fault = (ff && !x) || (uf && !u) || (wf && !w) ||
(smapf && smap);
map |= fault << bit;
}
mmu->permissions[byte] = map;

View File

@ -44,11 +44,17 @@
#define PT_DIRECTORY_LEVEL 2
#define PT_PAGE_TABLE_LEVEL 1
#define PFERR_PRESENT_MASK (1U << 0)
#define PFERR_WRITE_MASK (1U << 1)
#define PFERR_USER_MASK (1U << 2)
#define PFERR_RSVD_MASK (1U << 3)
#define PFERR_FETCH_MASK (1U << 4)
#define PFERR_PRESENT_BIT 0
#define PFERR_WRITE_BIT 1
#define PFERR_USER_BIT 2
#define PFERR_RSVD_BIT 3
#define PFERR_FETCH_BIT 4
#define PFERR_PRESENT_MASK (1U << PFERR_PRESENT_BIT)
#define PFERR_WRITE_MASK (1U << PFERR_WRITE_BIT)
#define PFERR_USER_MASK (1U << PFERR_USER_BIT)
#define PFERR_RSVD_MASK (1U << PFERR_RSVD_BIT)
#define PFERR_FETCH_MASK (1U << PFERR_FETCH_BIT)
int kvm_mmu_get_spte_hierarchy(struct kvm_vcpu *vcpu, u64 addr, u64 sptes[4]);
void kvm_mmu_set_mmio_spte_mask(u64 mmio_mask);
@ -73,6 +79,8 @@ int handle_mmio_page_fault_common(struct kvm_vcpu *vcpu, u64 addr, bool direct);
void kvm_init_shadow_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *context);
void kvm_init_shadow_ept_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *context,
bool execonly);
void update_permission_bitmask(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
bool ept);
static inline unsigned int kvm_mmu_available_pages(struct kvm *kvm)
{
@ -110,10 +118,30 @@ static inline bool is_write_protection(struct kvm_vcpu *vcpu)
* Will a fault with a given page-fault error code (pfec) cause a permission
* fault with the given access (in ACC_* format)?
*/
static inline bool permission_fault(struct kvm_mmu *mmu, unsigned pte_access,
unsigned pfec)
static inline bool permission_fault(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
unsigned pte_access, unsigned pfec)
{
return (mmu->permissions[pfec >> 1] >> pte_access) & 1;
int cpl = kvm_x86_ops->get_cpl(vcpu);
unsigned long rflags = kvm_x86_ops->get_rflags(vcpu);
/*
* If CPL < 3, SMAP prevention are disabled if EFLAGS.AC = 1.
*
* If CPL = 3, SMAP applies to all supervisor-mode data accesses
* (these are implicit supervisor accesses) regardless of the value
* of EFLAGS.AC.
*
* This computes (cpl < 3) && (rflags & X86_EFLAGS_AC), leaving
* the result in X86_EFLAGS_AC. We then insert it in place of
* the PFERR_RSVD_MASK bit; this bit will always be zero in pfec,
* but it will be one in index if SMAP checks are being overridden.
* It is important to keep this branchless.
*/
unsigned long smap = (cpl - 3) & (rflags & X86_EFLAGS_AC);
int index = (pfec >> 1) +
(smap >> (X86_EFLAGS_AC_BIT - PFERR_RSVD_BIT + 1));
return (mmu->permissions[index] >> pte_access) & 1;
}
void kvm_mmu_invalidate_zap_all_pages(struct kvm *kvm);

View File

@ -353,7 +353,7 @@ retry_walk:
walker->ptes[walker->level - 1] = pte;
} while (!is_last_gpte(mmu, walker->level, pte));
if (unlikely(permission_fault(mmu, pte_access, access))) {
if (unlikely(permission_fault(vcpu, mmu, pte_access, access))) {
errcode |= PFERR_PRESENT_MASK;
goto error;
}

View File

@ -3484,13 +3484,14 @@ static int vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
hw_cr4 &= ~X86_CR4_PAE;
hw_cr4 |= X86_CR4_PSE;
/*
* SMEP is disabled if CPU is in non-paging mode in
* hardware. However KVM always uses paging mode to
* SMEP/SMAP is disabled if CPU is in non-paging mode
* in hardware. However KVM always uses paging mode to
* emulate guest non-paging mode with TDP.
* To emulate this behavior, SMEP needs to be manually
* disabled when guest switches to non-paging mode.
* To emulate this behavior, SMEP/SMAP needs to be
* manually disabled when guest switches to non-paging
* mode.
*/
hw_cr4 &= ~X86_CR4_SMEP;
hw_cr4 &= ~(X86_CR4_SMEP | X86_CR4_SMAP);
} else if (!(cr4 & X86_CR4_PAE)) {
hw_cr4 &= ~X86_CR4_PAE;
}

View File

@ -652,6 +652,9 @@ int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
if (!guest_cpuid_has_smep(vcpu) && (cr4 & X86_CR4_SMEP))
return 1;
if (!guest_cpuid_has_smap(vcpu) && (cr4 & X86_CR4_SMAP))
return 1;
if (!guest_cpuid_has_fsgsbase(vcpu) && (cr4 & X86_CR4_FSGSBASE))
return 1;
@ -680,6 +683,9 @@ int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
(!(cr4 & X86_CR4_PCIDE) && (old_cr4 & X86_CR4_PCIDE)))
kvm_mmu_reset_context(vcpu);
if ((cr4 ^ old_cr4) & X86_CR4_SMAP)
update_permission_bitmask(vcpu, vcpu->arch.walk_mmu, false);
if ((cr4 ^ old_cr4) & X86_CR4_OSXSAVE)
kvm_update_cpuid(vcpu);
@ -1117,7 +1123,6 @@ static inline u64 get_kernel_ns(void)
{
struct timespec ts;
WARN_ON(preemptible());
ktime_get_ts(&ts);
monotonic_to_bootbased(&ts);
return timespec_to_ns(&ts);
@ -4164,7 +4169,8 @@ static int vcpu_mmio_gva_to_gpa(struct kvm_vcpu *vcpu, unsigned long gva,
| (write ? PFERR_WRITE_MASK : 0);
if (vcpu_match_mmio_gva(vcpu, gva)
&& !permission_fault(vcpu->arch.walk_mmu, vcpu->arch.access, access)) {
&& !permission_fault(vcpu, vcpu->arch.walk_mmu,
vcpu->arch.access, access)) {
*gpa = vcpu->arch.mmio_gfn << PAGE_SHIFT |
(gva & (PAGE_SIZE - 1));
trace_vcpu_match_mmio(gva, *gpa, write, false);

View File

@ -54,5 +54,7 @@ syshdr-$(CONFIG_X86_64) += syscalls_64.h
targets += $(uapisyshdr-y) $(syshdr-y)
PHONY += all
all: $(addprefix $(uapi)/,$(uapisyshdr-y))
all: $(addprefix $(out)/,$(syshdr-y))
@:

View File

@ -359,3 +359,4 @@
350 i386 finit_module sys_finit_module
351 i386 sched_setattr sys_sched_setattr
352 i386 sched_getattr sys_sched_getattr
353 i386 renameat2 sys_renameat2

View File

@ -40,4 +40,6 @@ $(obj)/insn_sanity.o: $(srctree)/arch/x86/lib/insn.c $(srctree)/arch/x86/lib/ina
HOST_EXTRACFLAGS += -I$(srctree)/tools/include
hostprogs-y += relocs
relocs-objs := relocs_32.o relocs_64.o relocs_common.o
PHONY += relocs
relocs: $(obj)/relocs
@:

View File

@ -441,10 +441,11 @@ static int xen_cpu_up(unsigned int cpu, struct task_struct *idle)
irq_ctx_init(cpu);
#else
clear_tsk_thread_flag(idle, TIF_FORK);
#endif
per_cpu(kernel_stack, cpu) =
(unsigned long)task_stack_page(idle) -
KERNEL_STACK_OFFSET + THREAD_SIZE;
#endif
xen_setup_runstate_info(cpu);
xen_setup_timer(cpu);
xen_init_lock_cpu(cpu);

View File

@ -274,7 +274,7 @@ void __init xen_init_spinlocks(void)
printk(KERN_DEBUG "xen: PV spinlocks disabled\n");
return;
}
printk(KERN_DEBUG "xen: PV spinlocks enabled\n");
pv_lock_ops.lock_spinning = PV_CALLEE_SAVE(xen_lock_spinning);
pv_lock_ops.unlock_kick = xen_unlock_kick;
}
@ -290,6 +290,9 @@ static __init int xen_init_spinlocks_jump(void)
if (!xen_pvspin)
return 0;
if (!xen_domain())
return 0;
static_key_slow_inc(&paravirt_ticketlocks_enabled);
return 0;
}

View File

@ -75,6 +75,17 @@ ENDPROC(xen_sysexit)
* stack state in whatever form its in, we keep things simple by only
* using a single register which is pushed/popped on the stack.
*/
.macro POP_FS
1:
popw %fs
.pushsection .fixup, "ax"
2: movw $0, (%esp)
jmp 1b
.popsection
_ASM_EXTABLE(1b,2b)
.endm
ENTRY(xen_iret)
/* test eflags for special cases */
testl $(X86_EFLAGS_VM | XEN_EFLAGS_NMI), 8(%esp)
@ -83,15 +94,13 @@ ENTRY(xen_iret)
push %eax
ESP_OFFSET=4 # bytes pushed onto stack
/*
* Store vcpu_info pointer for easy access. Do it this way to
* avoid having to reload %fs
*/
/* Store vcpu_info pointer for easy access */
#ifdef CONFIG_SMP
GET_THREAD_INFO(%eax)
movl %ss:TI_cpu(%eax), %eax
movl %ss:__per_cpu_offset(,%eax,4), %eax
mov %ss:xen_vcpu(%eax), %eax
pushw %fs
movl $(__KERNEL_PERCPU), %eax
movl %eax, %fs
movl %fs:xen_vcpu, %eax
POP_FS
#else
movl %ss:xen_vcpu, %eax
#endif

View File

@ -53,8 +53,8 @@ obj-y += gpu/
obj-$(CONFIG_CONNECTOR) += connector/
# i810fb and intelfb depend on char/agp/
obj-$(CONFIG_FB_I810) += video/i810/
obj-$(CONFIG_FB_INTEL) += video/intelfb/
obj-$(CONFIG_FB_I810) += video/fbdev/i810/
obj-$(CONFIG_FB_INTEL) += video/fbdev/intelfb/
obj-$(CONFIG_PARPORT) += parport/
obj-y += base/ block/ misc/ mfd/ nfc/

View File

@ -614,39 +614,6 @@ void device_remove_bin_file(struct device *dev,
}
EXPORT_SYMBOL_GPL(device_remove_bin_file);
/**
* device_schedule_callback_owner - helper to schedule a callback for a device
* @dev: device.
* @func: callback function to invoke later.
* @owner: module owning the callback routine
*
* Attribute methods must not unregister themselves or their parent device
* (which would amount to the same thing). Attempts to do so will deadlock,
* since unregistration is mutually exclusive with driver callbacks.
*
* Instead methods can call this routine, which will attempt to allocate
* and schedule a workqueue request to call back @func with @dev as its
* argument in the workqueue's process context. @dev will be pinned until
* @func returns.
*
* This routine is usually called via the inline device_schedule_callback(),
* which automatically sets @owner to THIS_MODULE.
*
* Returns 0 if the request was submitted, -ENOMEM if storage could not
* be allocated, -ENODEV if a reference to @owner isn't available.
*
* NOTE: This routine won't work if CONFIG_SYSFS isn't set! It uses an
* underlying sysfs routine (since it is intended for use by attribute
* methods), and if sysfs isn't available you'll get nothing but -ENOSYS.
*/
int device_schedule_callback_owner(struct device *dev,
void (*func)(struct device *), struct module *owner)
{
return sysfs_schedule_callback(&dev->kobj,
(void (*)(void *)) func, dev, owner);
}
EXPORT_SYMBOL_GPL(device_schedule_callback_owner);
static void klist_children_get(struct klist_node *n)
{
struct device_private *p = to_device_private_parent(n);

View File

@ -187,8 +187,8 @@ static void driver_bound(struct device *dev)
return;
}
pr_debug("driver: '%s': %s: bound to device '%s'\n", dev_name(dev),
__func__, dev->driver->name);
pr_debug("driver: '%s': %s: bound to device '%s'\n", dev->driver->name,
__func__, dev_name(dev));
klist_add_tail(&dev->p->knode_driver, &dev->driver->p->klist_devices);

View File

@ -39,8 +39,7 @@
static ssize_t show_##name(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
unsigned int cpu = dev->id; \
return sprintf(buf, "%d\n", topology_##name(cpu)); \
return sprintf(buf, "%d\n", topology_##name(dev->id)); \
}
#if defined(topology_thread_cpumask) || defined(topology_core_cpumask) || \

View File

@ -40,7 +40,7 @@ config SGI_MBCS
source "drivers/tty/serial/Kconfig"
config TTY_PRINTK
bool "TTY driver to output user messages via printk"
tristate "TTY driver to output user messages via printk"
depends on EXPERT && TTY
default n
---help---

View File

@ -61,18 +61,18 @@ static int bcm2835_rng_probe(struct platform_device *pdev)
}
bcm2835_rng_ops.priv = (unsigned long)rng_base;
/* set warm-up count & enable */
__raw_writel(RNG_WARMUP_COUNT, rng_base + RNG_STATUS);
__raw_writel(RNG_RBGEN, rng_base + RNG_CTRL);
/* register driver */
err = hwrng_register(&bcm2835_rng_ops);
if (err) {
dev_err(dev, "hwrng registration failed\n");
iounmap(rng_base);
} else {
} else
dev_info(dev, "hwrng registered\n");
/* set warm-up count & enable */
__raw_writel(RNG_WARMUP_COUNT, rng_base + RNG_STATUS);
__raw_writel(RNG_RBGEN, rng_base + RNG_CTRL);
}
return err;
}

View File

@ -50,6 +50,18 @@ config IPMI_SI
Currently, only KCS and SMIC are supported. If
you are using IPMI, you should probably say "y" here.
config IPMI_SI_PROBE_DEFAULTS
bool 'Probe for all possible IPMI system interfaces by default'
default n
depends on IPMI_SI
help
Modern systems will usually expose IPMI interfaces via a discoverable
firmware mechanism such as ACPI or DMI. Older systems do not, and so
the driver is forced to probe hardware manually. This may cause boot
delays. Say "n" here to disable this manual probing. IPMI will then
only be available on older systems if the "ipmi_si_intf.trydefaults=1"
boot argument is passed.
config IPMI_WATCHDOG
tristate 'IPMI Watchdog Timer'
help

View File

@ -352,7 +352,7 @@ static inline void write_all_bytes(struct si_sm_data *bt)
static inline int read_all_bytes(struct si_sm_data *bt)
{
unsigned char i;
unsigned int i;
/*
* length is "framing info", minimum = 4: NetFn, Seq, Cmd, cCode.

View File

@ -251,8 +251,9 @@ static inline int check_obf(struct si_sm_data *kcs, unsigned char status,
if (!GET_STATUS_OBF(status)) {
kcs->obf_timeout -= time;
if (kcs->obf_timeout < 0) {
start_error_recovery(kcs, "OBF not ready in time");
return 1;
kcs->obf_timeout = OBF_RETRY_TIMEOUT;
start_error_recovery(kcs, "OBF not ready in time");
return 1;
}
return 0;
}

View File

@ -55,6 +55,7 @@ static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void);
static int ipmi_init_msghandler(void);
static void smi_recv_tasklet(unsigned long);
static void handle_new_recv_msgs(ipmi_smi_t intf);
static void need_waiter(ipmi_smi_t intf);
static int initialized;
@ -73,14 +74,28 @@ static struct proc_dir_entry *proc_ipmi_root;
*/
#define MAX_MSG_TIMEOUT 60000
/* Call every ~1000 ms. */
#define IPMI_TIMEOUT_TIME 1000
/* How many jiffies does it take to get to the timeout time. */
#define IPMI_TIMEOUT_JIFFIES ((IPMI_TIMEOUT_TIME * HZ) / 1000)
/*
* Request events from the queue every second (this is the number of
* IPMI_TIMEOUT_TIMES between event requests). Hopefully, in the
* future, IPMI will add a way to know immediately if an event is in
* the queue and this silliness can go away.
*/
#define IPMI_REQUEST_EV_TIME (1000 / (IPMI_TIMEOUT_TIME))
/*
* The main "user" data structure.
*/
struct ipmi_user {
struct list_head link;
/* Set to "0" when the user is destroyed. */
int valid;
/* Set to false when the user is destroyed. */
bool valid;
struct kref refcount;
@ -92,7 +107,7 @@ struct ipmi_user {
ipmi_smi_t intf;
/* Does this interface receive IPMI events? */
int gets_events;
bool gets_events;
};
struct cmd_rcvr {
@ -383,6 +398,9 @@ struct ipmi_smi {
unsigned int waiting_events_count; /* How many events in queue? */
char delivering_events;
char event_msg_printed;
atomic_t event_waiters;
unsigned int ticks_to_req_ev;
int last_needs_timer;
/*
* The event receiver for my BMC, only really used at panic
@ -395,7 +413,7 @@ struct ipmi_smi {
/* For handling of maintenance mode. */
int maintenance_mode;
int maintenance_mode_enable;
bool maintenance_mode_enable;
int auto_maintenance_timeout;
spinlock_t maintenance_mode_lock; /* Used in a timer... */
@ -451,7 +469,6 @@ static DEFINE_MUTEX(ipmi_interfaces_mutex);
static LIST_HEAD(smi_watchers);
static DEFINE_MUTEX(smi_watchers_mutex);
#define ipmi_inc_stat(intf, stat) \
atomic_inc(&(intf)->stats[IPMI_STAT_ ## stat])
#define ipmi_get_stat(intf, stat) \
@ -772,6 +789,7 @@ static int intf_next_seq(ipmi_smi_t intf,
*seq = i;
*seqid = intf->seq_table[i].seqid;
intf->curr_seq = (i+1)%IPMI_IPMB_NUM_SEQ;
need_waiter(intf);
} else {
rv = -EAGAIN;
}
@ -941,7 +959,7 @@ int ipmi_create_user(unsigned int if_num,
new_user->handler = handler;
new_user->handler_data = handler_data;
new_user->intf = intf;
new_user->gets_events = 0;
new_user->gets_events = false;
if (!try_module_get(intf->handlers->owner)) {
rv = -ENODEV;
@ -962,10 +980,15 @@ int ipmi_create_user(unsigned int if_num,
*/
mutex_unlock(&ipmi_interfaces_mutex);
new_user->valid = 1;
new_user->valid = true;
spin_lock_irqsave(&intf->seq_lock, flags);
list_add_rcu(&new_user->link, &intf->users);
spin_unlock_irqrestore(&intf->seq_lock, flags);
if (handler->ipmi_watchdog_pretimeout) {
/* User wants pretimeouts, so make sure to watch for them. */
if (atomic_inc_return(&intf->event_waiters) == 1)
need_waiter(intf);
}
*user = new_user;
return 0;
@ -1019,7 +1042,13 @@ int ipmi_destroy_user(ipmi_user_t user)
struct cmd_rcvr *rcvr;
struct cmd_rcvr *rcvrs = NULL;
user->valid = 0;
user->valid = false;
if (user->handler->ipmi_watchdog_pretimeout)
atomic_dec(&intf->event_waiters);
if (user->gets_events)
atomic_dec(&intf->event_waiters);
/* Remove the user from the interface's sequence table. */
spin_lock_irqsave(&intf->seq_lock, flags);
@ -1155,25 +1184,23 @@ int ipmi_set_maintenance_mode(ipmi_user_t user, int mode)
if (intf->maintenance_mode != mode) {
switch (mode) {
case IPMI_MAINTENANCE_MODE_AUTO:
intf->maintenance_mode = mode;
intf->maintenance_mode_enable
= (intf->auto_maintenance_timeout > 0);
break;
case IPMI_MAINTENANCE_MODE_OFF:
intf->maintenance_mode = mode;
intf->maintenance_mode_enable = 0;
intf->maintenance_mode_enable = false;
break;
case IPMI_MAINTENANCE_MODE_ON:
intf->maintenance_mode = mode;
intf->maintenance_mode_enable = 1;
intf->maintenance_mode_enable = true;
break;
default:
rv = -EINVAL;
goto out_unlock;
}
intf->maintenance_mode = mode;
maintenance_mode_update(intf);
}
@ -1184,7 +1211,7 @@ int ipmi_set_maintenance_mode(ipmi_user_t user, int mode)
}
EXPORT_SYMBOL(ipmi_set_maintenance_mode);
int ipmi_set_gets_events(ipmi_user_t user, int val)
int ipmi_set_gets_events(ipmi_user_t user, bool val)
{
unsigned long flags;
ipmi_smi_t intf = user->intf;
@ -1194,8 +1221,18 @@ int ipmi_set_gets_events(ipmi_user_t user, int val)
INIT_LIST_HEAD(&msgs);
spin_lock_irqsave(&intf->events_lock, flags);
if (user->gets_events == val)
goto out;
user->gets_events = val;
if (val) {
if (atomic_inc_return(&intf->event_waiters) == 1)
need_waiter(intf);
} else {
atomic_dec(&intf->event_waiters);
}
if (intf->delivering_events)
/*
* Another thread is delivering events for this, so
@ -1289,6 +1326,9 @@ int ipmi_register_for_cmd(ipmi_user_t user,
goto out_unlock;
}
if (atomic_inc_return(&intf->event_waiters) == 1)
need_waiter(intf);
list_add_rcu(&rcvr->link, &intf->cmd_rcvrs);
out_unlock:
@ -1330,6 +1370,7 @@ int ipmi_unregister_for_cmd(ipmi_user_t user,
mutex_unlock(&intf->cmd_rcvrs_mutex);
synchronize_rcu();
while (rcvrs) {
atomic_dec(&intf->event_waiters);
rcvr = rcvrs;
rcvrs = rcvr->next;
kfree(rcvr);
@ -1535,7 +1576,7 @@ static int i_ipmi_request(ipmi_user_t user,
= IPMI_MAINTENANCE_MODE_TIMEOUT;
if (!intf->maintenance_mode
&& !intf->maintenance_mode_enable) {
intf->maintenance_mode_enable = 1;
intf->maintenance_mode_enable = true;
maintenance_mode_update(intf);
}
spin_unlock_irqrestore(&intf->maintenance_mode_lock,
@ -2876,6 +2917,8 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers,
(unsigned long) intf);
atomic_set(&intf->watchdog_pretimeouts_to_deliver, 0);
spin_lock_init(&intf->events_lock);
atomic_set(&intf->event_waiters, 0);
intf->ticks_to_req_ev = IPMI_REQUEST_EV_TIME;
INIT_LIST_HEAD(&intf->waiting_events);
intf->waiting_events_count = 0;
mutex_init(&intf->cmd_rcvrs_mutex);
@ -3965,7 +4008,8 @@ smi_from_recv_msg(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg,
static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent,
struct list_head *timeouts, long timeout_period,
int slot, unsigned long *flags)
int slot, unsigned long *flags,
unsigned int *waiting_msgs)
{
struct ipmi_recv_msg *msg;
struct ipmi_smi_handlers *handlers;
@ -3977,8 +4021,10 @@ static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent,
return;
ent->timeout -= timeout_period;
if (ent->timeout > 0)
if (ent->timeout > 0) {
(*waiting_msgs)++;
return;
}
if (ent->retries_left == 0) {
/* The message has used all its retries. */
@ -3995,6 +4041,8 @@ static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent,
struct ipmi_smi_msg *smi_msg;
/* More retries, send again. */
(*waiting_msgs)++;
/*
* Start with the max timer, set to normal timer after
* the message is sent.
@ -4040,117 +4088,118 @@ static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent,
}
}
static void ipmi_timeout_handler(long timeout_period)
static unsigned int ipmi_timeout_handler(ipmi_smi_t intf, long timeout_period)
{
ipmi_smi_t intf;
struct list_head timeouts;
struct ipmi_recv_msg *msg, *msg2;
unsigned long flags;
int i;
unsigned int waiting_msgs = 0;
rcu_read_lock();
list_for_each_entry_rcu(intf, &ipmi_interfaces, link) {
tasklet_schedule(&intf->recv_tasklet);
/*
* Go through the seq table and find any messages that
* have timed out, putting them in the timeouts
* list.
*/
INIT_LIST_HEAD(&timeouts);
spin_lock_irqsave(&intf->seq_lock, flags);
for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++)
check_msg_timeout(intf, &(intf->seq_table[i]),
&timeouts, timeout_period, i,
&flags, &waiting_msgs);
spin_unlock_irqrestore(&intf->seq_lock, flags);
/*
* Go through the seq table and find any messages that
* have timed out, putting them in the timeouts
* list.
*/
INIT_LIST_HEAD(&timeouts);
spin_lock_irqsave(&intf->seq_lock, flags);
for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++)
check_msg_timeout(intf, &(intf->seq_table[i]),
&timeouts, timeout_period, i,
&flags);
spin_unlock_irqrestore(&intf->seq_lock, flags);
list_for_each_entry_safe(msg, msg2, &timeouts, link)
deliver_err_response(msg, IPMI_TIMEOUT_COMPLETION_CODE);
list_for_each_entry_safe(msg, msg2, &timeouts, link)
deliver_err_response(msg, IPMI_TIMEOUT_COMPLETION_CODE);
/*
* Maintenance mode handling. Check the timeout
* optimistically before we claim the lock. It may
* mean a timeout gets missed occasionally, but that
* only means the timeout gets extended by one period
* in that case. No big deal, and it avoids the lock
* most of the time.
*/
/*
* Maintenance mode handling. Check the timeout
* optimistically before we claim the lock. It may
* mean a timeout gets missed occasionally, but that
* only means the timeout gets extended by one period
* in that case. No big deal, and it avoids the lock
* most of the time.
*/
if (intf->auto_maintenance_timeout > 0) {
spin_lock_irqsave(&intf->maintenance_mode_lock, flags);
if (intf->auto_maintenance_timeout > 0) {
spin_lock_irqsave(&intf->maintenance_mode_lock, flags);
if (intf->auto_maintenance_timeout > 0) {
intf->auto_maintenance_timeout
-= timeout_period;
if (!intf->maintenance_mode
&& (intf->auto_maintenance_timeout <= 0)) {
intf->maintenance_mode_enable = 0;
maintenance_mode_update(intf);
}
intf->auto_maintenance_timeout
-= timeout_period;
if (!intf->maintenance_mode
&& (intf->auto_maintenance_timeout <= 0)) {
intf->maintenance_mode_enable = false;
maintenance_mode_update(intf);
}
spin_unlock_irqrestore(&intf->maintenance_mode_lock,
flags);
}
spin_unlock_irqrestore(&intf->maintenance_mode_lock,
flags);
}
rcu_read_unlock();
tasklet_schedule(&intf->recv_tasklet);
return waiting_msgs;
}
static void ipmi_request_event(void)
static void ipmi_request_event(ipmi_smi_t intf)
{
ipmi_smi_t intf;
struct ipmi_smi_handlers *handlers;
rcu_read_lock();
/*
* Called from the timer, no need to check if handlers is
* valid.
*/
list_for_each_entry_rcu(intf, &ipmi_interfaces, link) {
/* No event requests when in maintenance mode. */
if (intf->maintenance_mode_enable)
continue;
/* No event requests when in maintenance mode. */
if (intf->maintenance_mode_enable)
return;
handlers = intf->handlers;
if (handlers)
handlers->request_events(intf->send_info);
}
rcu_read_unlock();
handlers = intf->handlers;
if (handlers)
handlers->request_events(intf->send_info);
}
static struct timer_list ipmi_timer;
/* Call every ~1000 ms. */
#define IPMI_TIMEOUT_TIME 1000
/* How many jiffies does it take to get to the timeout time. */
#define IPMI_TIMEOUT_JIFFIES ((IPMI_TIMEOUT_TIME * HZ) / 1000)
/*
* Request events from the queue every second (this is the number of
* IPMI_TIMEOUT_TIMES between event requests). Hopefully, in the
* future, IPMI will add a way to know immediately if an event is in
* the queue and this silliness can go away.
*/
#define IPMI_REQUEST_EV_TIME (1000 / (IPMI_TIMEOUT_TIME))
static atomic_t stop_operation;
static unsigned int ticks_to_req_ev = IPMI_REQUEST_EV_TIME;
static void ipmi_timeout(unsigned long data)
{
ipmi_smi_t intf;
int nt = 0;
if (atomic_read(&stop_operation))
return;
ticks_to_req_ev--;
if (ticks_to_req_ev == 0) {
ipmi_request_event();
ticks_to_req_ev = IPMI_REQUEST_EV_TIME;
rcu_read_lock();
list_for_each_entry_rcu(intf, &ipmi_interfaces, link) {
int lnt = 0;
if (atomic_read(&intf->event_waiters)) {
intf->ticks_to_req_ev--;
if (intf->ticks_to_req_ev == 0) {
ipmi_request_event(intf);
intf->ticks_to_req_ev = IPMI_REQUEST_EV_TIME;
}
lnt++;
}
lnt += ipmi_timeout_handler(intf, IPMI_TIMEOUT_TIME);
lnt = !!lnt;
if (lnt != intf->last_needs_timer &&
intf->handlers->set_need_watch)
intf->handlers->set_need_watch(intf->send_info, lnt);
intf->last_needs_timer = lnt;
nt += lnt;
}
rcu_read_unlock();
ipmi_timeout_handler(IPMI_TIMEOUT_TIME);
mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES);
if (nt)
mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES);
}
static void need_waiter(ipmi_smi_t intf)
{
/* Racy, but worst case we start the timer twice. */
if (!timer_pending(&ipmi_timer))
mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES);
}
static atomic_t smi_msg_inuse_count = ATOMIC_INIT(0);
static atomic_t recv_msg_inuse_count = ATOMIC_INIT(0);

View File

@ -217,7 +217,7 @@ struct smi_info {
unsigned char msg_flags;
/* Does the BMC have an event buffer? */
char has_event_buffer;
bool has_event_buffer;
/*
* If set to true, this will request events the next time the
@ -230,7 +230,7 @@ struct smi_info {
* call. Generally used after a panic to make sure stuff goes
* out.
*/
int run_to_completion;
bool run_to_completion;
/* The I/O port of an SI interface. */
int port;
@ -248,19 +248,25 @@ struct smi_info {
/* The timer for this si. */
struct timer_list si_timer;
/* This flag is set, if the timer is running (timer_pending() isn't enough) */
bool timer_running;
/* The time (in jiffies) the last timeout occurred at. */
unsigned long last_timeout_jiffies;
/* Used to gracefully stop the timer without race conditions. */
atomic_t stop_operation;
/* Are we waiting for the events, pretimeouts, received msgs? */
atomic_t need_watch;
/*
* The driver will disable interrupts when it gets into a
* situation where it cannot handle messages due to lack of
* memory. Once that situation clears up, it will re-enable
* interrupts.
*/
int interrupt_disabled;
bool interrupt_disabled;
/* From the get device id response... */
struct ipmi_device_id device_id;
@ -273,7 +279,7 @@ struct smi_info {
* True if we allocated the device, false if it came from
* someplace else (like PCI).
*/
int dev_registered;
bool dev_registered;
/* Slave address, could be reported from DMI. */
unsigned char slave_addr;
@ -297,19 +303,19 @@ struct smi_info {
static int force_kipmid[SI_MAX_PARMS];
static int num_force_kipmid;
#ifdef CONFIG_PCI
static int pci_registered;
static bool pci_registered;
#endif
#ifdef CONFIG_ACPI
static int pnp_registered;
static bool pnp_registered;
#endif
#ifdef CONFIG_PARISC
static int parisc_registered;
static bool parisc_registered;
#endif
static unsigned int kipmid_max_busy_us[SI_MAX_PARMS];
static int num_max_busy_us;
static int unload_when_empty = 1;
static bool unload_when_empty = true;
static int add_smi(struct smi_info *smi);
static int try_smi_init(struct smi_info *smi);
@ -434,6 +440,13 @@ static void start_clear_flags(struct smi_info *smi_info)
smi_info->si_state = SI_CLEARING_FLAGS;
}
static void smi_mod_timer(struct smi_info *smi_info, unsigned long new_val)
{
smi_info->last_timeout_jiffies = jiffies;
mod_timer(&smi_info->si_timer, new_val);
smi_info->timer_running = true;
}
/*
* When we have a situtaion where we run out of memory and cannot
* allocate messages, we just leave them in the BMC and run the system
@ -444,10 +457,9 @@ static inline void disable_si_irq(struct smi_info *smi_info)
{
if ((smi_info->irq) && (!smi_info->interrupt_disabled)) {
start_disable_irq(smi_info);
smi_info->interrupt_disabled = 1;
smi_info->interrupt_disabled = true;
if (!atomic_read(&smi_info->stop_operation))
mod_timer(&smi_info->si_timer,
jiffies + SI_TIMEOUT_JIFFIES);
smi_mod_timer(smi_info, jiffies + SI_TIMEOUT_JIFFIES);
}
}
@ -455,7 +467,7 @@ static inline void enable_si_irq(struct smi_info *smi_info)
{
if ((smi_info->irq) && (smi_info->interrupt_disabled)) {
start_enable_irq(smi_info);
smi_info->interrupt_disabled = 0;
smi_info->interrupt_disabled = false;
}
}
@ -700,7 +712,7 @@ static void handle_transaction_done(struct smi_info *smi_info)
dev_warn(smi_info->dev,
"Maybe ok, but ipmi might run very slowly.\n");
} else
smi_info->interrupt_disabled = 0;
smi_info->interrupt_disabled = false;
smi_info->si_state = SI_NORMAL;
break;
}
@ -853,6 +865,19 @@ static enum si_sm_result smi_event_handler(struct smi_info *smi_info,
return si_sm_result;
}
static void check_start_timer_thread(struct smi_info *smi_info)
{
if (smi_info->si_state == SI_NORMAL && smi_info->curr_msg == NULL) {
smi_mod_timer(smi_info, jiffies + SI_TIMEOUT_JIFFIES);
if (smi_info->thread)
wake_up_process(smi_info->thread);
start_next_msg(smi_info);
smi_event_handler(smi_info, 0);
}
}
static void sender(void *send_info,
struct ipmi_smi_msg *msg,
int priority)
@ -906,27 +931,11 @@ static void sender(void *send_info,
else
list_add_tail(&msg->link, &smi_info->xmit_msgs);
if (smi_info->si_state == SI_NORMAL && smi_info->curr_msg == NULL) {
/*
* last_timeout_jiffies is updated here to avoid
* smi_timeout() handler passing very large time_diff
* value to smi_event_handler() that causes
* the send command to abort.
*/
smi_info->last_timeout_jiffies = jiffies;
mod_timer(&smi_info->si_timer, jiffies + SI_TIMEOUT_JIFFIES);
if (smi_info->thread)
wake_up_process(smi_info->thread);
start_next_msg(smi_info);
smi_event_handler(smi_info, 0);
}
check_start_timer_thread(smi_info);
spin_unlock_irqrestore(&smi_info->si_lock, flags);
}
static void set_run_to_completion(void *send_info, int i_run_to_completion)
static void set_run_to_completion(void *send_info, bool i_run_to_completion)
{
struct smi_info *smi_info = send_info;
enum si_sm_result result;
@ -1004,6 +1013,17 @@ static int ipmi_thread(void *data)
spin_lock_irqsave(&(smi_info->si_lock), flags);
smi_result = smi_event_handler(smi_info, 0);
/*
* If the driver is doing something, there is a possible
* race with the timer. If the timer handler see idle,
* and the thread here sees something else, the timer
* handler won't restart the timer even though it is
* required. So start it here if necessary.
*/
if (smi_result != SI_SM_IDLE && !smi_info->timer_running)
smi_mod_timer(smi_info, jiffies + SI_TIMEOUT_JIFFIES);
spin_unlock_irqrestore(&(smi_info->si_lock), flags);
busy_wait = ipmi_thread_busy_wait(smi_result, smi_info,
&busy_until);
@ -1011,9 +1031,15 @@ static int ipmi_thread(void *data)
; /* do nothing */
else if (smi_result == SI_SM_CALL_WITH_DELAY && busy_wait)
schedule();
else if (smi_result == SI_SM_IDLE)
schedule_timeout_interruptible(100);
else
else if (smi_result == SI_SM_IDLE) {
if (atomic_read(&smi_info->need_watch)) {
schedule_timeout_interruptible(100);
} else {
/* Wait to be woken up when we are needed. */
__set_current_state(TASK_INTERRUPTIBLE);
schedule();
}
} else
schedule_timeout_interruptible(1);
}
return 0;
@ -1024,7 +1050,7 @@ static void poll(void *send_info)
{
struct smi_info *smi_info = send_info;
unsigned long flags = 0;
int run_to_completion = smi_info->run_to_completion;
bool run_to_completion = smi_info->run_to_completion;
/*
* Make sure there is some delay in the poll loop so we can
@ -1049,6 +1075,17 @@ static void request_events(void *send_info)
atomic_set(&smi_info->req_events, 1);
}
static void set_need_watch(void *send_info, bool enable)
{
struct smi_info *smi_info = send_info;
unsigned long flags;
atomic_set(&smi_info->need_watch, enable);
spin_lock_irqsave(&smi_info->si_lock, flags);
check_start_timer_thread(smi_info);
spin_unlock_irqrestore(&smi_info->si_lock, flags);
}
static int initialized;
static void smi_timeout(unsigned long data)
@ -1073,10 +1110,6 @@ static void smi_timeout(unsigned long data)
* SI_USEC_PER_JIFFY);
smi_result = smi_event_handler(smi_info, time_diff);
spin_unlock_irqrestore(&(smi_info->si_lock), flags);
smi_info->last_timeout_jiffies = jiffies_now;
if ((smi_info->irq) && (!smi_info->interrupt_disabled)) {
/* Running with interrupts, only do long timeouts. */
timeout = jiffies + SI_TIMEOUT_JIFFIES;
@ -1098,7 +1131,10 @@ static void smi_timeout(unsigned long data)
do_mod_timer:
if (smi_result != SI_SM_IDLE)
mod_timer(&(smi_info->si_timer), timeout);
smi_mod_timer(smi_info, timeout);
else
smi_info->timer_running = false;
spin_unlock_irqrestore(&(smi_info->si_lock), flags);
}
static irqreturn_t si_irq_handler(int irq, void *data)
@ -1146,8 +1182,7 @@ static int smi_start_processing(void *send_info,
/* Set up the timer that drives the interface. */
setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi);
new_smi->last_timeout_jiffies = jiffies;
mod_timer(&new_smi->si_timer, jiffies + SI_TIMEOUT_JIFFIES);
smi_mod_timer(new_smi, jiffies + SI_TIMEOUT_JIFFIES);
/*
* Check if the user forcefully enabled the daemon.
@ -1188,7 +1223,7 @@ static int get_smi_info(void *send_info, struct ipmi_smi_info *data)
return 0;
}
static void set_maintenance_mode(void *send_info, int enable)
static void set_maintenance_mode(void *send_info, bool enable)
{
struct smi_info *smi_info = send_info;
@ -1202,6 +1237,7 @@ static struct ipmi_smi_handlers handlers = {
.get_smi_info = get_smi_info,
.sender = sender,
.request_events = request_events,
.set_need_watch = set_need_watch,
.set_maintenance_mode = set_maintenance_mode,
.set_run_to_completion = set_run_to_completion,
.poll = poll,
@ -1229,7 +1265,7 @@ static bool si_tryplatform = 1;
#ifdef CONFIG_PCI
static bool si_trypci = 1;
#endif
static bool si_trydefaults = 1;
static bool si_trydefaults = IS_ENABLED(CONFIG_IPMI_SI_PROBE_DEFAULTS);
static char *si_type[SI_MAX_PARMS];
#define MAX_SI_TYPE_STR 30
static char si_type_str[MAX_SI_TYPE_STR];
@ -1328,7 +1364,7 @@ module_param_array(force_kipmid, int, &num_force_kipmid, 0);
MODULE_PARM_DESC(force_kipmid, "Force the kipmi daemon to be enabled (1) or"
" disabled(0). Normally the IPMI driver auto-detects"
" this, but the value may be overridden by this parm.");
module_param(unload_when_empty, int, 0);
module_param(unload_when_empty, bool, 0);
MODULE_PARM_DESC(unload_when_empty, "Unload the module if no interfaces are"
" specified or found, default is 1. Setting to 0"
" is useful for hot add of devices using hotmod.");
@ -3336,18 +3372,19 @@ static int try_smi_init(struct smi_info *new_smi)
INIT_LIST_HEAD(&(new_smi->hp_xmit_msgs));
new_smi->curr_msg = NULL;
atomic_set(&new_smi->req_events, 0);
new_smi->run_to_completion = 0;
new_smi->run_to_completion = false;
for (i = 0; i < SI_NUM_STATS; i++)
atomic_set(&new_smi->stats[i], 0);
new_smi->interrupt_disabled = 1;
new_smi->interrupt_disabled = true;
atomic_set(&new_smi->stop_operation, 0);
atomic_set(&new_smi->need_watch, 0);
new_smi->intf_num = smi_num;
smi_num++;
rv = try_enable_event_buffer(new_smi);
if (rv == 0)
new_smi->has_event_buffer = 1;
new_smi->has_event_buffer = true;
/*
* Start clearing the flags before we enable interrupts or the
@ -3381,7 +3418,7 @@ static int try_smi_init(struct smi_info *new_smi)
rv);
goto out_err;
}
new_smi->dev_registered = 1;
new_smi->dev_registered = true;
}
rv = ipmi_register_smi(&handlers,
@ -3430,7 +3467,7 @@ static int try_smi_init(struct smi_info *new_smi)
wait_for_timer_and_thread(new_smi);
out_err:
new_smi->interrupt_disabled = 1;
new_smi->interrupt_disabled = true;
if (new_smi->intf) {
ipmi_unregister_smi(new_smi->intf);
@ -3466,7 +3503,7 @@ static int try_smi_init(struct smi_info *new_smi)
if (new_smi->dev_registered) {
platform_device_unregister(new_smi->pdev);
new_smi->dev_registered = 0;
new_smi->dev_registered = false;
}
return rv;
@ -3521,14 +3558,14 @@ static int init_ipmi_si(void)
printk(KERN_ERR PFX "Unable to register "
"PCI driver: %d\n", rv);
else
pci_registered = 1;
pci_registered = true;
}
#endif
#ifdef CONFIG_ACPI
if (si_tryacpi) {
pnp_register_driver(&ipmi_pnp_driver);
pnp_registered = 1;
pnp_registered = true;
}
#endif
@ -3544,7 +3581,7 @@ static int init_ipmi_si(void)
#ifdef CONFIG_PARISC
register_parisc_driver(&ipmi_parisc_driver);
parisc_registered = 1;
parisc_registered = true;
/* poking PC IO addresses will crash machine, don't do it */
si_trydefaults = 0;
#endif

View File

@ -15,7 +15,7 @@ config SYNCLINK_CS
This driver may be built as a module ( = code which can be
inserted in and removed from the running kernel whenever you want).
The module will be called synclinkmp. If you want to do that, say M
The module will be called synclink_cs. If you want to do that, say M
here.
config CARDMAN_4000

View File

@ -17,7 +17,7 @@
#include <linux/device.h>
#include <linux/serial.h>
#include <linux/tty.h>
#include <linux/export.h>
#include <linux/module.h>
struct ttyprintk_port {
struct tty_port port;
@ -210,10 +210,19 @@ static int __init ttyprintk_init(void)
return 0;
error:
put_tty_driver(ttyprintk_driver);
tty_port_destroy(&tpk_port.port);
return ret;
}
static void __exit ttyprintk_exit(void)
{
tty_unregister_driver(ttyprintk_driver);
put_tty_driver(ttyprintk_driver);
tty_port_destroy(&tpk_port.port);
ttyprintk_driver = NULL;
return ret;
}
device_initcall(ttyprintk_init);
module_exit(ttyprintk_exit);
MODULE_LICENSE("GPL");

View File

@ -197,7 +197,7 @@ config AMCC_PPC440SPE_ADMA
config TIMB_DMA
tristate "Timberdale FPGA DMA support"
depends on MFD_TIMBERDALE || HAS_IOMEM
depends on MFD_TIMBERDALE
select DMA_ENGINE
help
Enable support for the Timberdale FPGA DMA engine.

View File

@ -182,11 +182,13 @@ static void edma_execute(struct edma_chan *echan)
echan->ecc->dummy_slot);
}
edma_resume(echan->ch_num);
if (edesc->processed <= MAX_NR_SG) {
dev_dbg(dev, "first transfer starting %d\n", echan->ch_num);
edma_start(echan->ch_num);
} else {
dev_dbg(dev, "chan: %d: completed %d elements, resuming\n",
echan->ch_num, edesc->processed);
edma_resume(echan->ch_num);
}
/*

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@ -968,7 +968,17 @@ static struct platform_driver fsl_edma_driver = {
.remove = fsl_edma_remove,
};
module_platform_driver(fsl_edma_driver);
static int __init fsl_edma_init(void)
{
return platform_driver_register(&fsl_edma_driver);
}
subsys_initcall(fsl_edma_init);
static void __exit fsl_edma_exit(void)
{
platform_driver_unregister(&fsl_edma_driver);
}
module_exit(fsl_edma_exit);
MODULE_ALIAS("platform:fsl-edma");
MODULE_DESCRIPTION("Freescale eDMA engine driver");

View File

@ -666,7 +666,7 @@ static struct dma_chan *of_dma_sirfsoc_xlate(struct of_phandle_args *dma_spec,
struct sirfsoc_dma *sdma = ofdma->of_dma_data;
unsigned int request = dma_spec->args[0];
if (request > SIRFSOC_DMA_CHANNELS)
if (request >= SIRFSOC_DMA_CHANNELS)
return NULL;
return dma_get_slave_channel(&sdma->channels[request].chan);

View File

@ -2,7 +2,7 @@
* SPEAr platform SPI chipselect abstraction over gpiolib
*
* Copyright (C) 2012 ST Microelectronics
* Shiraz Hashim <shiraz.hashim@st.com>
* Shiraz Hashim <shiraz.linux.kernel@gmail.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
@ -205,6 +205,6 @@ static int __init spics_gpio_init(void)
}
subsys_initcall(spics_gpio_init);
MODULE_AUTHOR("Shiraz Hashim <shiraz.hashim@st.com>");
MODULE_AUTHOR("Shiraz Hashim <shiraz.linux.kernel@gmail.com>");
MODULE_DESCRIPTION("ST Microlectronics SPEAr SPI Chip Select Abstraction");
MODULE_LICENSE("GPL");

View File

@ -23,7 +23,7 @@ drm-$(CONFIG_DRM_PANEL) += drm_panel.o
drm-usb-y := drm_usb.o
drm_kms_helper-y := drm_crtc_helper.o drm_dp_helper.o
drm_kms_helper-y := drm_crtc_helper.o drm_dp_helper.o drm_probe_helper.o
drm_kms_helper-$(CONFIG_DRM_LOAD_EDID_FIRMWARE) += drm_edid_load.o
drm_kms_helper-$(CONFIG_DRM_KMS_FB_HELPER) += drm_fb_helper.o
drm_kms_helper-$(CONFIG_DRM_KMS_CMA_HELPER) += drm_fb_cma_helper.o

View File

@ -572,7 +572,7 @@ static u32 cbr_scan2(struct ast_private *ast)
for (loop = 0; loop < CBR_PASSNUM2; loop++) {
if ((data = cbr_test2(ast)) != 0) {
data2 &= data;
if (!data)
if (!data2)
return 0;
break;
}

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@ -1,5 +1,6 @@
#include <linux/io.h>
#include <linux/fb.h>
#include <linux/console.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
@ -87,8 +88,6 @@ struct bochs_device {
struct bochs_framebuffer gfb;
struct drm_fb_helper helper;
int size;
int x1, y1, x2, y2; /* dirty rect */
spinlock_t dirty_lock;
bool initialized;
} fb;
};

View File

@ -94,6 +94,49 @@ static struct drm_driver bochs_driver = {
.dumb_destroy = drm_gem_dumb_destroy,
};
/* ---------------------------------------------------------------------- */
/* pm interface */
static int bochs_pm_suspend(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *drm_dev = pci_get_drvdata(pdev);
struct bochs_device *bochs = drm_dev->dev_private;
drm_kms_helper_poll_disable(drm_dev);
if (bochs->fb.initialized) {
console_lock();
fb_set_suspend(bochs->fb.helper.fbdev, 1);
console_unlock();
}
return 0;
}
static int bochs_pm_resume(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *drm_dev = pci_get_drvdata(pdev);
struct bochs_device *bochs = drm_dev->dev_private;
drm_helper_resume_force_mode(drm_dev);
if (bochs->fb.initialized) {
console_lock();
fb_set_suspend(bochs->fb.helper.fbdev, 0);
console_unlock();
}
drm_kms_helper_poll_enable(drm_dev);
return 0;
}
static const struct dev_pm_ops bochs_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend,
bochs_pm_resume)
};
/* ---------------------------------------------------------------------- */
/* pci interface */
@ -155,6 +198,7 @@ static struct pci_driver bochs_pci_driver = {
.id_table = bochs_pci_tbl,
.probe = bochs_pci_probe,
.remove = bochs_pci_remove,
.driver.pm = &bochs_pm_ops,
};
/* ---------------------------------------------------------------------- */

View File

@ -190,7 +190,6 @@ int bochs_fbdev_init(struct bochs_device *bochs)
int ret;
bochs->fb.helper.funcs = &bochs_fb_helper_funcs;
spin_lock_init(&bochs->fb.dirty_lock);
ret = drm_fb_helper_init(bochs->dev, &bochs->fb.helper,
1, 1);

View File

@ -11,6 +11,7 @@
#include <linux/module.h>
#include <linux/console.h>
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include "cirrus_drv.h"
@ -75,6 +76,41 @@ static void cirrus_pci_remove(struct pci_dev *pdev)
drm_put_dev(dev);
}
static int cirrus_pm_suspend(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *drm_dev = pci_get_drvdata(pdev);
struct cirrus_device *cdev = drm_dev->dev_private;
drm_kms_helper_poll_disable(drm_dev);
if (cdev->mode_info.gfbdev) {
console_lock();
fb_set_suspend(cdev->mode_info.gfbdev->helper.fbdev, 1);
console_unlock();
}
return 0;
}
static int cirrus_pm_resume(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *drm_dev = pci_get_drvdata(pdev);
struct cirrus_device *cdev = drm_dev->dev_private;
drm_helper_resume_force_mode(drm_dev);
if (cdev->mode_info.gfbdev) {
console_lock();
fb_set_suspend(cdev->mode_info.gfbdev->helper.fbdev, 0);
console_unlock();
}
drm_kms_helper_poll_enable(drm_dev);
return 0;
}
static const struct file_operations cirrus_driver_fops = {
.owner = THIS_MODULE,
.open = drm_open,
@ -103,11 +139,17 @@ static struct drm_driver driver = {
.dumb_destroy = drm_gem_dumb_destroy,
};
static const struct dev_pm_ops cirrus_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(cirrus_pm_suspend,
cirrus_pm_resume)
};
static struct pci_driver cirrus_pci_driver = {
.name = DRIVER_NAME,
.id_table = pciidlist,
.probe = cirrus_pci_probe,
.remove = cirrus_pci_remove,
.driver.pm = &cirrus_pm_ops,
};
static int __init cirrus_init(void)

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