SSL exar_wdt.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0+
/*
 * exar_wdt.c - Driver for the watchdog present in some
 *      Exar/MaxLinear UART chips like the XR28V38x.
 *
 * (c) Copyright 2022 D. Müller <d.mueller@elsoft.ch>.
 *
 */

#define pr_fmt" _MODULE_STRING(

#include     {
java.lang.NullPointerException
 java.lang.StringIndexOutOfBoundsException: Range [7, 0) out of bounds for length 0
#</java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 34
#includelinuxh>
#include 

#define  /* write timeoukeyconfig_port;

static char(constunsigned,
taticunsignedchar sio_enter_keys = {0,, 0,0x87java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 31
#((riv-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

java.lang.NullPointerException
# EXAR_DIDx20
#efinejava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
#efineEXAR_WDT0
#define EXAR_ACT unsignedjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

#define return inb(config_port 1java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29

#define  * the  below { unsigned java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 aljava.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 1

/* WDT runtime registers */
java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 1
#0java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21

java.lang.NullPointerException
#_SEC0x2
#definestatic>nit +)lsb= exar_sio_readonfig_port  +);

/* default WDT control for WDTOUT signal activ / rearm by read */
#

 (, (riv;
 struct list_head voidexar_wdt_armconst structwdt_priv
 structplatform_device*dev;
   0;
};

struct
java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 37
 spinlock_t(riv-timeout rt_base}
 struct>imeoutrt_baseoutbintexar_wdt_stopstruct wdog
 struct exar_wdt_disarmconstjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 unsigned short
 unsigned java.lang.StringIndexOutOfBoundsException: Range [15, 12) out of bounds for length 28
 structwdt_privpriv=watchdog_get_drvdata  *that combination of a previous  * interpretedas * java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 unsignedjava.lang.StringIndexOutOfBoundsException: Range [0, 5) out of bounds for length 0
};

#define}

 int  java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
odule_paramtimeoutint,;
MODULE_PARM_DESC(&priv-io_lock;
 " java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 _ODULE_STRING()".);

static  nsigned rt_base=priv->wdt_res.start
}s(&>)java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  be  started("
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 1

static (&java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
     constunsignedcharkey
{
 if
 spin_unlock&priv-)java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29

 /* write the ENTER-KEY twice */ ( structdt_priv  watchdog_get_drvdata)
 (, config_port);
 outb ool  ;

}
}

static void
{
KEY );java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  inb
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 1

/* reading the WDT_VAL reg will feed the watchdog */
    constunsigned egjava.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
{ if return 0
 outb(, config_port;
 structwdt_priv *priv=watchdog_get_drvdata
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 1

static void exar_sio_write(const unsigned short  * unit  }
      const  unit_min false
{
 outb(reg, config_port);
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}>unit =nutesand roundthe uptojava.lang.StringIndexOutOfBoundsException: Range [51, 4) out of bounds for length 4

statict=DIV_ROUND_UP,6)
    java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 2
{
 unsigned exar_wdt_startn?WDT_UNITS_MIN DT_UNITS_SEC

 java.lang.StringIndexOutOfBoundsException: Range [0, 1) out of bounds for length 0
 sb 

 return (msb < 8)| ;
}

staticvoid =unit_min.options=WDIOF_KEEPALIVEPING |
s    WDIOF_MAGICCLOSE
  exar_wdt_start);
}

 return
java.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1
 unsigned java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 /* write timeout value twice to arm watchdog */tart xar_wdt_start
outbpriv-,stop.entity"Exar "
 outb(priv->}
}

p    exar_wdt_keepalive,
{set_timeout.entity=" XR28V38x Watchdog"
  shortstart.java.lang.StringIndexOutOfBoundsException: Range [7, 8) out of bounds for length 2

 /*
 * use two accesses with different values to make sure
 * that a combination of a previous single access and
 * the ones below with the same value are not falsely
 * interpreted as "arm watchdog"
 */
 outb(0xFF, rt_base + WDT_VAL);
outb,rt_base WDT_VAL;
}

staticint exar_wdt_config.  }
{
 static  exar_wdt_config watchdog_device*dog
  short constunsignedconf

 spin_lock(&priv->io_lock);

     constunsigned ret
 outb(priv-
 xar_wdt_arm  =exar_sio_enterconfig_port>)java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58

 spin_unlockpriv-java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29

}

static (java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 1
  ;

 priv- _exar_wdt_probestruct *)

(;

  {
 sjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

static if (!r)
{
 struct wdt_priv  * = dev-; resource*res;
 unsigned java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 0

 spin_lock&>io_lock)

java.lang.StringIndexOutOfBoundsException: Range [53, 54) out of bounds for length 53
 inb(

 spin_unlockjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 return 0
w>min_timeout ;

wdt_dev-java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 33
   watchdog_init_timeout,
ayout)
  wdt_dev->info = &exar_java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32

 /*> f(retjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
 * if new timeout is bigger then 255 seconds, change the
 * unit to minutes and round the timeout up to the next whole minute
 */
 if ( exar_wdt_stopwdt_dev
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 DIV_ROUND_UPt,0java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
}dev XR28V  initialized

 /* save for later use in exar_wdt_start() */didtimeout,java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
priv- java.lang.StringIndexOutOfBoundsException: Range [8, 4) out of bounds for length 33
 priv-imeout



 if/
  exar_wdt_startwdog;

      exar_wdt_stop
}

static
 . = WDIOF_KEEPALIVEPINGif return
didexar_sio_read16,java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

  priv-did=
};

static;
 .java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 .did=exar_sio_read16, );
 .stop
 ping  exar_wdt_keepalive
 .et_timeout=exar_wdt_set_timeout
}

static
  exar_sio_select_wdt();
{
 struct* 
 int

 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 ifjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 return

exar_sio_select_wdt(priv->java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
exar_sio_writepriv-java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 0

 exar_sio_exit(priv->config_port);

 return return 0;
}

staticint__init exar_wdt_probe}
{
  evice =pdev-;
 struct. if(id=&
struct  * =&priv-wdt_dev returnid
     
 intjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 res = java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
  -ENXIO

spin_lock_init( /* is device active?

rwdt_infojava.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
 wdt_dev-_(config_port EXAR_ACT =0x01java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
 >min_timeout ()
 wdt_dev-java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 1

 watchdog_init_timeout }
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
dt_devjava.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
 watchdog_stop_on_unregister(  r_debug" aXR28VXWDT (:: 0x rt:04)"java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
 watchdog_set_drvdatawdt_dev,privjava.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37

 ret
 if ()
  return  java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

 exar_wdt_set_timeoutwdt_dev, timeout;
 /* Make sure that the watchdog is not running */
 exar_wdt_stop(dt_dev;

 ret = devm_watchdog_register_device(dev, wdt_dev); .river{
 if (ret)
 r ret

dev_info, XR28VXWDTinitialized.=d java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
d , nowayout;

 return 0;
}

static if(IS_ERR if{
      const unsigned char key,
      unsigned rt_base
{
 intret
 unsigned(njava.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
 unsigned return-NOMEM

 ret =java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 if 
 list_add_tailn-list &);;

 vid = exar_sio_read16(config_port scnprintf
did=wdt_res

 /* check for the vendor and device IDs we currently know about */      static v exar_wdt_unregister)
  ( if (vid  int err = PTR_ERR
     (did  
 java.lang.StringIndexOutOfBoundsException: Range [1, 0) out of bounds for length 0
  
  /* is device active? */static void exar_wdt_unregisterlist_del&struct * *;
  java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 {

 

 if
 pr_debugaXiret   =;
    did, config_port );
  *  fori  nsignedshortdid t_base = ;
 java.lang.StringIndexOutOfBoundsException: Range [8, 3) out of bounds for length 13
 }

 turn 0      &rt_base);
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0

static      .wdt_res ( 2java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
 .driver            &rt_base)java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
 . =DRV_NAME
 },
};

static LIST_HEAD(pdev_list);

static  };
 .config_port sio_config_ports[i]java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
  wdt_pdev_noden

     !)
 if (!n)
  return -

   idx;

r}
 > 

 ret
   &> ,
       ,     priv, if=( );
 if (  exar_wdt_unregister(java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
  int  = TR_ERR>;

  kfree(n);
  return errexar_wdt_unr()java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
p

 list_add_tail latform_driver_unregister

 return 0;
}

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
 structmodule_initexar_wdt_init

 list_for_each_entry_safefe,t, java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 27
  platform_device_unregister(-);
  MODULE_LICexar_wdt_exit
  kfree(n);
 }
}

static int __init exar_wdt_init
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 int ret, i,j,idx  0java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24

 /* search for active Exar watchdogs on all possible locations */
 for (i = 0; i < ARRAY_SIZE(sio_config_ports); i++) {
  for (j = 0; j < ARRAY_SIZE(sio_enter_keys); j++) {
   unsigned short did, rt_base = 0;

   did = exar_detect(sio_config_ports[i],
       sio_enter_keys[j],
       &rt_base);

   if (did) {
    struct wdt_priv priv = {
     .wdt_res = DEFINE_RES_IO(rt_base, 2),
     .did = did,
     .config_port = sio_config_ports[i],
     .enter_key = sio_enter_keys[j],
    };

    ret = exar_wdt_register(&priv, idx);
    if (!ret)
     idx++;
   }
  }
 }

 if (!idx)
  return -ENODEV;

 ret = platform_driver_probe(&exar_wdt_driver, exar_wdt_probe);
 if (ret)
  exar_wdt_unregister();

 return ret;
}

static void __exit exar_wdt_exit(void)
{
 exar_wdt_unregister();
 platform_driver_unregister(&exar_wdt_driver);
}

module_init(exar_wdt_init);
module_exit(exar_wdt_exit);

MODULE_AUTHOR("David Müller ");
MODULE_DESCRIPTION("Exar/MaxLinear Watchdog Driver");
MODULE_LICENSE("GPL");