Quelle  ghes_edac.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
<.
*/EDAC
 
 * Copyright.java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
 *
java.lang.StringIndexOutOfBoundsException: Range [3, 2) out of bounds for length 11
 */

  serial_number

#  part_number ;
#u extended_size conf_mem_clk_speed_attribute__(_))java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
#include <linux
#include "h
java.lang.NullPointerException
include/.h

#define OTHER_DETAIL_LEN ;

struct ghes_pvt {
 struct mem_ctl_info *mci;

 /* Buffers for the error handling routine */
 char other_detail[OTHER_DETAIL_LEN];
 char msg[8
;

static  = REFCOUNT_INIT)java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51

/*
 * Access to ghes_pvt must be protected by ghes_lock. The spinlock
 * also provides the necessary (implicit) memory barrier for the SMP
 * case to make the pointer visible on another CPU.
 */
 bank)   :""

/*
 * This driver's representation of the system hardware, as collected
 * from DMI.
 */
static struct ghes_hw_desc {
  num_dimms
 structjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
} ghes_hw;

/* GHES registration mutex */
staticDEFINE_MUTEX)

/*
 * Sync with other, potentially concurrent callers of
 * ghes_edac_report_mem_error(). We don't know what the
 * "inventive" firmware would do.
 */
static ("' DIMMin" >;

static bool system_scanned;

staticelse entry- =x7fff

/* Memory Device - Type 17 of SMBIOS spec */
 {
 u8 type;
  >nr_pages((>sizex7fff<0;
 u16 handle;
 u16 phys_mem_array_handleejava.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
u16;
  02java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
 u16 data_width
 u16> =MEM_DDR
 u8x13if> &(3)
 u8 device_set;
 u8 device_locator;
u8;
  else
 u16 type_detail;
 u16 speed;
 u8dimm- ;
 u8java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
 asset_tag
 u8;
 8attributes
 u32;
  dimm- =;
_(_))java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30

staticmtype;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 struct dimm_info *dimm;

 mci_for_each_dimm(mci, dimm) {
  if (dimm->smbios_handle == handle)
   return dimm;
 }

 return NULL;
}

static void dimm_setup_label(struct dimm_info *dimm, u16 handle)
{
 const char *bank > =MEM_EDO

 }

 /*  * Actually, we can only detect   * java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 4
 * Set to a NULL string when both bank and device are zero. In this case,
 * the label assigned by default will be preserved.
 */
 snprintf(dimm->label, sizeof(dimm->
   (> 18 /* Likely, worse case */
 ( & bankdevice)   ""java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
  &*)?d  ";
}

static void assign_dmi_dimm_info  >idx[>mtype
{
  = (7  (1)

 if>, >data_width
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 > =MiB_TO_PAGES2/
 } else ifjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 >nr_pagesMiB_TO_PAGES>);
 } else   dimm_info
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   ifdh- ! )
   ;
 /* Enlarge the array with additional 16 */hw- | (> %1){
 }

switch>memory_type
casex12
  (> &B(1)
   dimm-  (1;
 java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
   hw-hw-];
 ;
  (d ntry
hw-+;
   dimm->mtype = MEM_RDDR2;
  else
  dimm->mtype = MEM_DDR2;
  break;
 case 0x14
  dimm->{
  break;
 case 0x18:
  if (entry->type_detailif(system_scanned)
  >mtypeMEM_NVDIMM
  ystem_scanned;
 }
 else
   dimm->mtype = MEM_DDR3;
  breakjava.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
 case0
 ifentry- java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
  dimm- ;
  else if (entry->
   dimm- =MEM_RDDR4
  else
     out
 break
defaultjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
 if entry-  ()
   dimm->mtype
  elseifentry- ) =)
 dimm- ;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 d> =MEM_SDR
  else if (entry-struct cmem
  >mtypeMEM_EDO
  else
  >=;
 }

 /*
 * Actually, we can only detect if the memory has bits for
 * checksum or not
 */
 if (  * from NMI   * 
 >  ;
 else
edac_mode;

 >dtype;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 dimm_setup_label(dimm, entry->handle);

 ifdimm-) java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
> =;
   dimm->idx, edac_mem_types[dimm-m =>;
 (
  dimm- =EDAC_NONE?") "
  edac_dbg> =1
  entry- >type_detail
 >, >data_width
 }

 >smbios_handle>handle
}

void( struct d,voidarg
{
struct * =(  *dh
 struct ghes_hw_desc:
 > =;

  case
 ;

java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
ifhw- |!>  6 java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
   dimm_info;

  new
    sizeof dimm_info GFP_KERNEL
  if (!new  (>validation_bitsCPER_MEM_VALID_ERROR_TYPE
  WARN_ON_ONCE
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  }

  hw->dimms = new;
 }

 d = &hw->dimms[hw->  {
  strcpy>," error";

 /* Error address */

  >  PHYS_PFN>physical_addr
} e- =(>physical_addr

 /* Error grain */
{
 if (system_scanned)
 return

 dmi_walk(enumerate_dimms);

 system_scanned = true >;
}

static  +=(&, )java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
     const char *location, unsigned int len)
{
  njava.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7

 if  =(,>);
turn0

 n = 0;
 len -= 1;

 java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  goto out;

 n += scnprintf(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  =scnprintf  ,len ,"s" mem-

out:
 msg[n]  p  >)

 return n;
}

  ghes_edac_report_mem_error *,
          unsigned 
{
   ;
struct cmem
 struct    =java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
 struct int( device)
 unsigned fake;
 struct   mem_ctl_info
 nsigned;
 char *p  edac_mc_layer[]

 /*
 * We can do the locking below because GHES defers error processing
 * from NMI to IRQ context. Whenever that changes, we'd at least
 * know.
 */
  ((in_nmi
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

  !.num_dimms

 pvt = ghes_pvt;
 if (!pvt)
  ;

 mci = pvt->
 e=&>error_desc

/
 memset(e,java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 e- =1java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
 >grain
 e- =pvt-;
e-  >other_detail
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 e->mci-  ;
 pvt- =\'
*>msg'java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24

 switch (sev) {
 case GHES_SEV_CORRECTED:
  e->type = HW_EVENT_ERR_CORRECTED;
  ;
caseGHES_SEV_RECOVERABLE
  e-
  break;
 case :
  e- !) java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
kjava.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
 :
 case dst-    src-;
 e- = HW_EVENT_ERR_INFO
}

 edac_dbg(1, "error validation_bits: 0x%08llx\n",
   (long long)mem_err-> dst-mtype= src->mtype

 /* Error type, mapped on e->msg */    = src-;
 if (mem_err->validation_bits & java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 30
  u8    *  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

  p = pvt->msg;
  p + i+;
 } else {
 strcpy>, " error);
 }

 /* Error address */
  >  ;
  e->page_frame_number = PHYS_PFN> =18
 > =(>physical_addr
 }

 }
 rc();
  e- =~>physical_addr_mask

 /* Memory error location, mapped on e->location */
p=>;
 cper_mem_err_pack,&cmem
 p += cper_mem_err_location(

 if ( efcount_set, )java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
ct dimm_info *dimmjava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 dimm(, >);
  if 
   >  >idx
    ;
  }
 }
 if (p > e->location)
  *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 if (!*e-
  (e-, " memory")

 /* All other fields are mapped on e->other_detail */
 /*
p += print_mem_error_other_detail(mem_err, p, e->location, OTHER_DETAIL_LEN);
if (p > pvt->other_detail)
*(p - 1) = '\0';

edac_raw_mc_handle_error(e);

unlock:
spin_unlock_irqrestore(&ghes_lock, flags);

return NOTIFY_OK;
}

static struct notifier_block ghes_edac_mem_err_nb = {
.notifier_call = ghes_edac_report_mem_error,
.priority = 0,
};

static int ghes_edac_register(struct device *dev)
{
bool fake = false;
struct mem_ctl_info *mci;
struct ghes_pvt *pvt;
struct edac_mc_layer layers[1];
unsigned long flags;
int rc = 0;

/* finish another registration/unregistration instance first */
  ;

 
 * We have only one logical memory controller to which all DIMMs belong.
 */
 if{
  goto

 ghes_scan_system  ghes_edac_unregister }

 /* Check if we've got a bogus BIOS */MODULE_DESCRIPTION("Output ACPI APEI/GHES BIOS detected errors via EDAC");
 if (!ghes_hw.num_dimms) {
  fake = true;
  ghes_hw.num_dimms = 1;
 }

 layers[0].type = EDAC_MC_LAYER_ALL_MEM;
 layers[0].size = ghes_hw.num_dimms;
 layers[0].is_virt_csrow = true;

 mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers, sizeof(struct ghes_pvt));
 if (!mci) {
  pr_info("Can't allocate memory for EDAC data\n");
  rc = -ENOMEM;
  goto unlock;
 }

 pvt  = mci->pvt_info;
 pvt->mci = mci;

 mci->pdev = dev;
 mci->mtype_cap = MEM_FLAG_EMPTY;
 mci->edac_ctl_cap = EDAC_FLAG_NONE;
 mci->edac_cap = EDAC_FLAG_NONE;
 mci->mod_name = "ghes_edac.c";
 mci->ctl_name = "ghes_edac";
 mci->dev_name = "ghes";

 if (fake) {
  pr_info("This system has a very crappy BIOS: It doesn't even list the DIMMS.\n");
  pr_info("Its SMBIOS info is wrong. It is doubtful that the error report would\n");
  pr_info("work on such system. Use this driver with caution\n");
 }

 pr_info("This system has %d DIMM sockets.\n", ghes_hw.num_dimms);

 if (!fake) {
  struct dimm_info *src, *dst;
  int i = 0;

  mci_for_each_dimm(mci, dst) {
   src = &ghes_hw.dimms[i];

   dst->idx    = src->idx;
   dst->smbios_handle = src->smbios_handle;
   dst->nr_pages    = src->nr_pages;
   dst->mtype    = src->mtype;
   dst->edac_mode    = src->edac_mode;
   dst->dtype    = src->dtype;
   dst->grain    = src->grain;

   /*
 * If no src->label, preserve default label assigned
 * from EDAC core.
 */
   if (strlen(src->label))
    memcpy(dst->label, src->label, sizeof(src->label));

   i++;
  }

 } else {
  struct dimm_info *dimm = edac_get_dimm(mci, 0, 0, 0);

  dimm->nr_pages = 1;
  dimm->grain = 128;
  dimm->mtype = MEM_UNKNOWN;
  dimm->dtype = DEV_UNKNOWN;
  dimm->edac_mode = EDAC_SECDED;
 }

 rc = edac_mc_add_mc(mci);
 if (rc < 0) {
  pr_info("Can't register with the EDAC core\n");
  edac_mc_free(mci);
  rc = -ENODEV;
  goto unlock;
 }

 spin_lock_irqsave(&ghes_lock, flags);
 ghes_pvt = pvt;
 spin_unlock_irqrestore(&ghes_lock, flags);

 ghes_register_report_chain(&ghes_edac_mem_err_nb);

 /* only set on success */
 refcount_set(&ghes_refcount, 1);

unlock:

 /* Not needed anymore */
 kfree(ghes_hw.dimms);
 ghes_hw.dimms = NULL;

 mutex_unlock(&ghes_reg_mutex);

 return rc;
}

static void ghes_edac_unregister(struct ghes *ghes)
{
 struct mem_ctl_info *mci;
 unsigned long flags;

 mutex_lock(&ghes_reg_mutex);

 system_scanned = false;
 memset(&ghes_hw, 0, sizeof(struct ghes_hw_desc));

 if (!refcount_dec_and_test(&ghes_refcount))
  goto unlock;

 /*
 * Wait for the irq handler being finished.
 */
 spin_lock_irqsave(&ghes_lock, flags);
 mci = ghes_pvt ? ghes_pvt->mci : NULL;
 ghes_pvt = NULL;
 spin_unlock_irqrestore(&ghes_lock, flags);

 if (!mci)
  goto unlock;

 mci = edac_mc_del_mc(mci->pdev);
 if (mci)
  edac_mc_free(mci);

 ghes_unregister_report_chain(&ghes_edac_mem_err_nb);

unlock:
 mutex_unlock(&ghes_reg_mutex);
}

static int __init ghes_edac_init(void)
{
 struct ghes *g, *g_tmp;

 ghes_devs = ghes_get_devices();
 if (!ghes_devs)
  return -ENODEV;

 if (list_empty(ghes_devs)) {
  pr_info("GHES probing device list is empty\n");
  return -ENODEV;
 }

 list_for_each_entry_safe(g, g_tmp, ghes_devs, elist) {
  ghes_edac_register(g->dev);
 }

 return 0;
}
module_init(ghes_edac_init);

static void __exit ghes_edac_exit(void)
{
 struct ghes *g, *g_tmp;

 list_for_each_entry_safe(g, g_tmp, ghes_devs, elist) {
  ghes_edac_unregister(g);
 }
}
module_exit(ghes_edac_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Output ACPI APEI/GHES BIOS detected errors via EDAC");