linux/drivers/watchdog/mv64x60_wdt.c
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   1/*
   2 * mv64x60_wdt.c - MV64X60 (Marvell Discovery) watchdog userspace interface
   3 *
   4 * Author: James Chapman <jchapman@katalix.com>
   5 *
   6 * Platform-specific setup code should configure the dog to generate
   7 * interrupt or reset as required.  This code only enables/disables
   8 * and services the watchdog.
   9 *
  10 * Derived from mpc8xx_wdt.c, with the following copyright.
  11 *
  12 * 2002 (c) Florian Schirmer <jolt@tuxbox.org> This file is licensed under
  13 * the terms of the GNU General Public License version 2. This program
  14 * is licensed "as is" without any warranty of any kind, whether express
  15 * or implied.
  16 */
  17
  18#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  19
  20#include <linux/fs.h>
  21#include <linux/init.h>
  22#include <linux/kernel.h>
  23#include <linux/miscdevice.h>
  24#include <linux/module.h>
  25#include <linux/watchdog.h>
  26#include <linux/platform_device.h>
  27#include <linux/mv643xx.h>
  28#include <linux/uaccess.h>
  29#include <linux/io.h>
  30
  31#define MV64x60_WDT_WDC_OFFSET  0
  32
  33/*
  34 * The watchdog configuration register contains a pair of 2-bit fields,
  35 *   1.  a reload field, bits 27-26, which triggers a reload of
  36 *       the countdown register, and
  37 *   2.  an enable field, bits 25-24, which toggles between
  38 *       enabling and disabling the watchdog timer.
  39 * Bit 31 is a read-only field which indicates whether the
  40 * watchdog timer is currently enabled.
  41 *
  42 * The low 24 bits contain the timer reload value.
  43 */
  44#define MV64x60_WDC_ENABLE_SHIFT        24
  45#define MV64x60_WDC_SERVICE_SHIFT       26

  v2.6.27.42
  
  
  
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fm41#define "drivers/watchdog/mv64x60_wdt.c#L33" id="L35chdog/mv54x60_wdt.c#L44" id="L445 clas53e  5     search unsignedid=nam"+code=KBUILD_M" c_flagsclass="sref">fm" c_flags    "drivers/watchdog/mv64x60_wdt.c#L31" id="L35og/mv64x660_wdt.c#L6" id="L6" claFTfm" c_searus    "drivers/watchdog/mv64x60_wdt.c#L31" id="L35
  
  
56    search voidm"+code=KBUILD_M__iomemclass="sref">fm__iomem#*"+code=KBUILD_Mt.c#L31" id_"> sclass="sref">fmt.c#L31" id_"> s    "drivers/watchdog/mv64x60_wdt.c#L31" id="L3525-24, w5ich toggles between
  19
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   19
/*
  19
  19

  v2.6.27.WATCHnOG_NOWAYOU
    "drivers/watchdog/mv64x60_wdt.c#L31" id="L36s="sref"6MV64x60_WDC_ENABLE_SHIF6 6, _paramclass="sref">fmt5_param_MODNAME   19
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    ) ers/watchdog/mv64x60_wdt.c#)9" id="L19" co"drivers/watchdog/mv64x60_wdt.c#L31" id="L36 the wat6hdog timer.
/*
  " ic19">  19
  " ic_MODNintm"+code=KBUILD_M1  19
  19
 * interrupt or reset as required.enabled.7/span>
 * interrupt or reset as required.hdog/mv67x60_wdt.c#L42" id="L42"7class71#define "+code=KBUILD_Mu"line" name/a>

#define "+code=KBUILD_Mu"line" name/a>
  19
  19
 74class="comment">/*
#define "+code=KBUILD_Mspin_lock19">  19
  19

  19
  sclass="sref">fmt.c#L31" id_"> s     +rs/watchdog/mv64x60_wdt.c#L32" id="L32" class="line" name="L32">  32
  19
 

  v2.6.27.41
  
  /*
   2  " nam"L8"estediass="lif41

  19
  19
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  19
  19
  19
 
 sclass="sref">fmt.c#L31" id_"> s     +rs/watchdog/mv64x60_wdt.c#L32" id="L32" class="line" name="L32">  32
 84class="comment">/*
#define #define "+code=KBUILD_Mdataine" name/a>
  19
  19
  19
 
 sclass="sref">fmt.c#L31" id_"> s     +rs/watchdog/mv64x60_wdt.c#L32" id="L32" class="line" name="L32">  32
  19
  19
  19
#define 

     "+code=KBUILD_MreL19">  19
}drivers/watchdog/mv64x60_wdt.c#L31" id="L39chdog/mv94x60_wdt.c#L44" id="L449 clas93e  9     search voidm"+code=KBUILD_Mt.c#L31" id_se="L9"19">  19
 * interrupt or reset as required9og/mv64x960_wdt.c#L6" id="L6" cl9FT * interrupt or reset as required9hould co9nfigure the dog to gene9	  >
96#define "+code=KBUILD_Mt.c#L31" id_e8">  " ic19">  19
  " ic_MODN"+code=KBUILD_M41
  
  fm41
  
  ,drivers/watchdog/mv64x60_wdt.c#L31" id="L39.  This 9code only enables/disab9n>
#define         #define        href="drivers/watchdog/mv64x60_wdt.c#L46" id="L4	  >
  v2.6.23.8
<19">  19
<_MODNvoid)comment"> * interrupt or reset as required10hdog/mv640x60_wdt.c#L12" id="L12" 01atcan1    {comment"> * interrupt or reset as required10t;jolt@tu0xbox.org> This file i02atcan2#define if ("+code=KBUILD_Mt.c#L31" id_e8">  " ic19">  19
  " ic_MODN"+code=KBUILD_M41
  
  fm41
  
  ,drivers/watchdog/mv64x60_wdt.c#L31" id="L310 Public L0icense version 2. This p03atcan3#define #define     #define        href="drivers/watchdog/mv6460_wdt.c#L45" id="L45" class="line" name="L45">  45)) {comment"> * interrupt or reset as required10; without0 any warranty of any kin04atcan4#define         "+code=KBUILD_Mt.c#L31" id_se="L9"19">  19
  19
#define }drivers/watchdog/mv64x60_wdt.c#L31" id="L310" class="0line" name="L18">  18}drivers/watchdog/mv64x60_wdt.c#L31" id="L310>(/*
  20  19
 * interrupt or reset as required1with the ffollowing copyright.
<110    {comment"> * interrupt or reset as required1chdog/mv64xx60_wdt.c#L12" id="L12" c1atca11#define if ("+code=KBUILD_Mt.c#L31" id_e8">  " ic19">  19
  " ic_MODN"+code=KBUILD_M41
  
  fm41
  
  ,drivers/watchdog/mv64x60_wdt.c#L31" id="L31lt;jolt@tuuxbox.org> This file iis li112#define #define     #define        href="drivers/watchdog/mv6460_wdt.c#L45" id="L45" class="line" name="L45">  45))drivers/watchdog/mv64x60_wdt.c#L31" id="L31l Public LLicense version 2. This pprogr113#define #define "+code=KBUILD_Mpr_notL9"19">  19
  19
  19
  18#de1ine  * interrupt or reset as required1c>(fm118#define "ame="L2">   2  20#in119#define if ("+code=KBUILD_Me="LouL19">  19
  19
linux/1fs.h>
  19
  19
linu1x/init.h>
  19
  19
  19
linux/miscdevice.h1>
123#define "+code=KBUILD_Mt.c#L31" id_e="LouL19">  19
  19
1linux/watchdog.h>1
linux/platform_de1vice.126    search intm"+code=KBUILD_Mt.c#L31" id_op>  19
<_MODNmv6uctm"+code=KBUILD_MinLD_/d">  19
  19
  19
  19
 * interrupt or reset as required1="fref">l1inux/uaccess.h>
<1a hre128#define if ("+code=KBUILD_Meest_and_sed_biL19">  19
fm41, &"+code=KBUILD_M" c_flagsclass="sref">fm" c_flags    ))drivers/watchdog/mv64x60_wdt.c#L31" id="L31f">linux/1io.h>
fmEBUSY_MOD"drivers/watchdog/mv64x60_wdt.c#L31" id="L311" class=1"line" name="L31">  31#de1ine M1V64x60_WDT_WDC_OFFSET  0
131#define if ("+code=KBUILD_MnowayouL19">  19
  33#define #define "+code=KBUILD_M__t5_geL19">  19
_geL_MODN"+code=KBUILD_MTHIS_4ODU4519">  19
#define "+code=KBUILD_Mt.c#L31" id_handler_e<19">  19
<_MODNo"drivers/watchdog/mv64x60_wdt.c#L31" id="L31c="fref">1ich triggers a reload of1#define 

     "+code=KBUILD_Mnonseek/a><_op>  19
<_op><_MODN"+code=KBUILD_MinLD_/d">  19
  19
/*
  19
  19
  19
  19
  19
 * interrupt or reset as required1chdog/mv614x60_wdt.c#L42" id="L42"1 clas141#define if ("+code=KBUILD_Mexpecd_ lose19">  19

  19
#define else {comment"> * interrupt or reset as required1ss="sref"1>MV64x60_WDC_ENABLE_SHIF1T144#define         "+code=KBUILD_Mpr_criL19">  19
MV64x60_WDC_SERVICE_SH1IFT#define #define "+code=KBUILD_Mt.c#L31" id_se="L9"19">  19
146#define }drivers/watchdog/mv64x60_wdt.c#L31" id="L31>25-24, w14ich toggles between
<147#define "+code=KBUILD_Mexpecd_ lose19">  19
/*
  19
fm41, &"+code=KBUILD_M" c_flagsclass="sref">fm" c_flags    )"drivers/watchdog/mv64x60_wdt.c#L31" id="L315enabled.15/span>
#define 

     0"drivers/watchdog/mv64x60_wdt.c#L31" id="L315timer re15oad value.
15     search "+code=KBUILD_Mssize_L19">  19
#"+code=KBUILD_Mt.c#L31" id_wri4019">  19
  19
  19
  19

#define #define                  "+code=KBUILD_Msize_L19">  19
#"+code=KBUILD_Ml>  19
<_MOD, "+code=KBUILD_Mloff_L19">  19
fmppos_MOD)drivers/watchdog/mv64x60_wdt.c#L31" id="L315
  
  156    {comment"> * interrupt or reset as required1525-24, w15ich toggles between
<157#define if ("+code=KBUILD_Ml>  19
<_MOD) {comment"> * interrupt or reset as required15 the wat15hdog timer.
  19
 * interrupt or reset as required15which in15icates whether the
#define #define         "+code=KBUILD_Msize_L19">  19
#"+code=KBUILD_Mi/d">  19
#define #define #define "+code=KBUILD_Mexpecd_ lose19">  19
/*
  19
  19
  19
<_MOD"#"+code=KBUILD_Mi/d">  19
 * interrupt or reset as required16s="sref"16MV64x60_WDC_ENABLE_SHIF16164#define                         charm"+code=KBUILD_Mc19">  19
#define #define                 if ("+code=KBUILD_Mget_"L3"19">  19
  19

  19
166#define                                 

     -"+code=KBUILD_MEFAUL5" id="L45" clasEFAUL5_MOD"drivers/watchdog/mv64x60_wdt.c#L31" id="L31625-24, w16ich toggles between
<167#define         #define         if ("+code=KBUILD_Mc19">  19
#define #define                         "+code=KBUILD_Mexpecd_ lose19">  19
#define #define }drivers/watchdog/mv64x60_wdt.c#L31" id="L31.hdog/mv617x60_wdt.c#L42" id="L42"17clas171#define #define "+code=KBUILD_Mt.c#L31" id_se="L9"19">  19
#define }drivers/watchdog/mv64x60_wdt.c#L31" id="L31.chdog/mv174x60_wdt.c#L44" id="L4417 cla173e 174#define 

     "+code=KBUILD_Ml>  19
<_MOD" href="+code=MV64x60_WDT_WDC_OFFSET" class17ss="sref1760_wdt.c#L6" id="L6" cl17FT}drivers/watchdog/mv64x60_wdt.c#L31" id="L31.chdog/mv67nfigure the dog to gene17	  >176drivers/watchdog/mv64x60_wdt.c#L31" id="L31." class="lline" name="L18">  18n>
<177    search d=nam"+code=KBUILD_Mt.c#L31" id_ioctl19">  19
  19
  19
#define #define                         unsignediintm"+code=KBUILD_Mcms19">  19
  19
 * interrupt or reset as required18enabled.18/span>
  19
#define intm"+code=KBUILD_M/mv64xsclass="sref">fm/mv64xs_MOD" href="+code=MV64x60_WDT_WDC_OFFSET" class18timer re18oad value.
  19
  19
  19
  19
fm"0_WDT_W_info#"+code=KBUILD_Minfoclass="sref">fminfo#= {comment"> * interrupt or reset as required18s="sref"18MV64x60_WDC_ENABLE_SHIF18184#define         ."+code=KBUILD_M/mv64xsclass="sref">fm/mv64xs_MOD#= fine "+code=KBUILD_MWDIOF_SETTIMEOU
	  >
  v2.6.27.WDIOF_SETTIMEOU
#define |comment"> * interrupt or reset as required18ss="sref1860_wdt.c#L6" id="L6" cl18FT#define #define #define #define "+code=KBUILD_MWDIOF_MAGICCLOS class="sref">fmWDIOF_MAGICCLOS #define |comment"> * interrupt or reset as required18chdog/mv68nfigure the dog to gene18	  >186#define         #define #define "+code=KBUILD_MWDIOF_KEEPALIVEPINGclass="sref">fmWDIOF_KEEPALIVEPING_MOD,drivers/watchdog/mv64x60_wdt.c#L31" id="L318.  This 18code only enables/disab18n>
<187#define         ."+code=KBUILD_Mfirmware_dog/64x19">  19
fmidentity_MOD =v"rs/watchdog/mv64x60_wdt.c#41
#define swi_WD ("+code=KBUILD_Mcms19">  19
 * interrupt or reset as required19timer re19oad value.

  v2.6.27.WDIOC_GETSUPPOR
:comment"> * interrupt or reset as required19chdog/mv194x60_wdt.c#L44" id="L4419 cla193#define #define if ("+code=KBUILD_Mcopy_to_"L3"19">  19
  19
fminfo, sizeofN"+code=KBUILD_Minfoclass="sref">fminfo)))drivers/watchdog/mv64x60_wdt.c#L31" id="L319s="sref"19MV64x60_WDC_ENABLE_SHIF19194#define                 

     -"+code=KBUILD_MEFAUL5" id="L45" clasEFAUL5_MOD"drivers/watchdog/mv64x60_wdt.c#L31" id="L319og/mv64x1960_wdt.c#L6" id="L6" cl19FT#define #define break"drivers/watchdog/mv64x60_wdt.c#L31" id="L319chdog/mv69nfigure the dog to gene19	  >196drivers/watchdog/mv64x60_wdt.c#L31" id="L319.  This 19code only enables/disab19n>
<197#define casf="+code=KBUILD_MWDIOC_GETSTATUS	  >
  v2.6.27.WDIOC_GETSTATUS:comment"> * interrupt or reset as required19>(#define casf="+code=KBUILD_MWDIOC_GETBOOTSTATUS	  >
  v2.6.27.WDIOC_GETBOOTSTATUS:comment"> * interrupt or reset as required19" class="lline" name="L20">  20>
#define #define if ("+code=KBUILD_Mput_"L3"19">  19
fm" c_searus    , Nintm"+code=KBUILD_M__"L3"19">  19
  19
#define #define "+code=KBUILD_Mw c_searusclass="sref">fm" c_searus     &= ~"+code=KBUILD_MWDIOF_KEEPALIVEPINGclass="sref">fmWDIOF_KEEPALIVEPING_MOD"drivers/watchdog/mv64x60_wdt.c#L31" id="L320fref">lin0xbox.org> This file 202atc202#define #define break"drivers/watchdog/mv64x60_wdt.c#L31" id="L320 Public 20icense version 2. This 203atc203e #define casf="+code=KBUILD_MWDIOC_GETTEMP	  >
  v2.6.27.WDIOC_GETTEMP:comment"> * interrupt or reset as required20drivers/20atchdog/mv64x60_wdt.c#L205atc2n5#define #define 

     -"+code=KBUILD_MEOPNOTSUPP" id="L45" clasEOPNOTSUPP_MOD"drivers/watchdog/mv64x60_wdt.c#L31" id="L320" class="04x60_wdt.c#L17" id="L17206atc206drivers/watchdog/mv64x60_wdt.c#L31" id="L320" class=20line" name="L18">  18#define casf="+code=KBUILD_MWDIOC_SETOPTIONS	  >
  v2.6.27.WDIOC_SETOPTIONS:comment"> * interrupt or reset as required20"fref">li0="+code=fmt" class="sre208atc208#define #define if ("+code=KBUILD_Mget_"L3"19">  19
fm/mv64xs_MOD, Nintm"+code=KBUILD_M__"L3"19">  19
  19
linux/i0line" name="L20">  20#define #define         

     -"+code=KBUILD_MEFAUL5" id="L45" clasEFAUL5_MOD"drivers/watchdog/mv64x60_wdt.c#L31" id="L32with the 2following copyright.
<21ne #define #define if ("+code=KBUILD_M/mv64xsclass="sref">fm/mv64xs_MOD#& "+code=KBUILD_MWDIOS_DIS"L45CARDclass="sref">fmWDIOS_DIS"L45CARD_MOD)drivers/watchdog/mv64x60_wdt.c#L31" id="L32lt;jolt@t2uxbox.org> This file 2is li212#define #define     #def"+code=KBUILD_Mt.c#L31" id_handler_a>  19
#define         if ("+code=KBUILD_M/mv64xsclass="sref">fm/mv64xs_MOD#& "+code=KBUILD_MWDIOS_e="L45CARDclass="sref">fmWDIOS_e="L45CARD_MOD)drivers/watchdog/mv64x60_wdt.c#L31" id="L32ldrivers/2watchdog/mv64x60_wdt.c#L216" i215#define #define #define "+code=KBUILD_Mt.c#L31" id_handler_e<19">  19
<_MODNo"drivers/watchdog/mv64x60_wdt.c#L31" id="L32"chdog/mv264x60_wdt.c#L17" id="L172" cla216#define         break"drivers/watchdog/mv64x60_wdt.c#L31" id="L32l" class=2"line" name="L18">  18#de21ne pr_fmt(fm218#define casf="+code=KBUILD_MWDIOC_KEEPALIVE	  >
  v2.6.27.WDIOC_KEEPALIVE:comment"> * interrupt or reset as required20" class=2"line" name="L20">  20#in219#define #define "+code=KBUILD_Mt.c#L31" id_se="L9"19">  19
linux/2fs.h>
fm" c_searus     |=ve+code=KBUILD_MWDIOF_KEEPALIVEPINGclass="sref">fmWDIOF_KEEPALIVEPING_MOD"drivers/watchdog/mv64x60_wdt.c#L31" id="L32ref">linu2x/init.h>
/*
linux/miscdevice.h2>
223#define casf="+code=KBUILD_MWDIOC_SETTIMEOU
	  >
  v2.6.27.WDIOC_SETTIMEOU
:comment"> * interrupt or reset as required2r; withou2nux/module.h>
#define         if ("+code=KBUILD_Mget_"L3"19">  19
  19
  19
  19
2linux/watchdog.h>2
#define #define #define 

     -"+code=KBUILD_MEFAUL5" id="L45" clasEFAUL5_MOD"drivers/watchdog/mv64x60_wdt.c#L31" id="L32h" class=2"fref">linux/platform_de2vice.226#define         e+code=KBUILD_Mt.c#L31" id_sed_e="LouL19">  19
  19
>
<2a hre227#define         "ame="L2">   2l2inux/uaccess.h>
<2a hre228class="comment">/*
linux/2io.h>

  v2.6.27.WDIOC_GETTIMEOU
:comment"> * interrupt or reset as required21" class=2"line" name="L31">  31#de230#define #define if ("+code=KBUILD_Mput_"L3"19">  19
  19
  19
  19
M2V64x60_WDT_WDC_OFFSET  0
231#define #define #define 

     -"+code=KBUILD_MEFAUL5" id="L45" clasEFAUL5_MOD"drivers/watchdog/mv64x60_wdt.c#L31" id="L323" class=2"line" name="L33">  33#define #define break"drivers/watchdog/mv64x60_wdt.c#L31" id="L32chdog/mv624x60_wdt.c#L34" id="L34"2 clas233e #define a hault:comment"> * interrupt or reset as required21="fref">2ich triggers a reload of2#define #define 

     -"+code=KBUILD_MENOTTYclass="sref">fmENOTTY_MOD"drivers/watchdog/mv64x60_wdt.c#L31" id="L323" class=2pan>

<23ne pr_fmt
rav64xsclass="sref">fm sl__op>rav64xs#"+code=KBUILD_Mt.c#L31" id_fopsclass="sref">fmt.c#L31" id_fops#= {comment"> * interrupt or reset as required2 " class=2load value.
  19
  19
#define ."+code=KBUILD_Mllseek19">  19
  19
  19
  19
2">MV64x60_WDC_SERVICE_SH2IFT#define ."+code=KBUILD_Munlocked_ioctl19">  19
  19
246#define ."+code=KBUILD_M/m>  19
<_MOD =v"+code=KBUILD_Mt.c#L31" id_op>  19
<_MOD,drivers/watchdog/mv64x60_wdt.c#L31" id="L32t" class=24ich toggles between
<247#define ."+code=KBUILD_Mrelease19">  19
  19
which in24icates whether the
  19
#"+code=KBUILD_Mt.c#L31" id_tiscde"19">  19
#= {comment"> * interrupt or reset as required25hdog/mv625x60_wdt.c#L42" id="L42"25clas251#define ."+code=KBUILD_Mmino"19">  19

  v2.6.27.WATCHnOG_MINOR_MOD,drivers/watchdog/mv64x60_wdt.c#L31" id="L325timer re25oad value.

  19
fmfops#= &"+code=KBUILD_Mt.c#L31" id_fopsclass="sref">fmt.c#L31" id_fops,drivers/watchdog/mv64x60_wdt.c#L31" id="L325egister 25MV64x60_WDC_ENABLE_SHIF2525     }" href="+code=MV64x60_WDT_WDC_OFFSET" class25ss="sref2660_wdt.c#L6" id="L6" cl2aFT256    search intm"+code=KBUILD_M__de"LniL19">  19
#"+code=KBUILD_Mt.c#L31" id_probe19">  19
  19
  19
)drivers/watchdog/mv64x60_wdt.c#L31" id="L32525-24, w25ich toggles between
<25ne  * interrupt or reset as required25 the wat25hdog timer.


  19
-"ret#"+code=KBUILD_Mt.c#L31" fss=""line" name:9>#definm"L9uerrupt or reset as required25 the wat25hdetheref="d142#define #define "+code=KBe mv6uctm"+code=KBUILD_Mm.c#L31" id_pdataine"uhdog/mv624x60_wdt.c#L42" id="L42"2 clas2Resourplatform_de"L9"_MResourplLD_Mpdataine" name/a>ino"_MOD =v"+codreref="d142#define #define "+code=KBe mv6uctm
  19
#def2ne #d26hdog/mv64x60_wdt.c#L31" id="L31rt;jolt@tuxxbox.2lue.

l2inux/uadt.c#L44"2id="L4416 cla163#def2ne #d2fine     #deff_Mput_"L3"19">  19164#def2ne   2                     c"LouL19">  19
  19#"+code=KBUILD_Mta>
#def2ne #d2fine                 ic#L31" id_ namea>
  19#"+code=KBUILD_Mta>
linu1x/init2dt.c#L17"2id="L17" 	  >166#def2ne   26vers/watchdog/mv64x60_wdt.c#L31" id="L32c" class=2hich toggles bet2een
<167#def2ne   26=pr_fmt" class="sref">pr_fmt
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