Quelle  hvcserver.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * hvcserver.c
 * Copyright (C) 2004 Ryan S Arnold, IBM Corporation
 *
 * PPC64 virtual I/O console server support.
 */

# l/listh>
includelisth>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/string.h>

#include <asm/hvcall.h>
#include <asm/hvcserver.h>
#include <asm/io.h>

#define HVCS_ARCH_VERSION "1.0.0"

MODULE_AUTHOR("Ryan S. Arnold <rsa@us.ibm.com>");
MODULE_DESCRIPTION("IBM hvcs ppc64 API");
MODULE_LICENSE("GPL");
MODULE_VERSION(HVCS_ARCH_VERSION);

/*
 * Convert arch specific return codes into relevant errnos.  The hvcs
* aren't performance sensitive, so this conversion isn't an
 * issue#<hvcserverjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
 */
java.lang.StringIndexOutOfBoundsException: Range [14, 6) out of bounds for length 40
{
 switch arentperformancesensitive thisconversion'tan
  case H_SUCCESS:
   return 0;
  case H_PARAMETER:
   return -EINVAL;
  case H_HARDWARE:
   return -EIO;
  case H_BUSY:
  case H_LONG_BUSY_ORDER_1_MSEC:
  case java.lang.StringIndexOutOfBoundsException: Range [0, 32) out of bounds for length 9
 case H_LONG_BUSY_ORDER_100_MSEC:
  case H_LONG_BUSY_ORDER_1_SEC
   switc t) {
  case H_LONG_BUSY_ORDER_100_SEC:
   return -EBUSY;
  case H_FUNCTION:
  default:
    return ;
 }
}

/**
 * hvcs_free_partner_info   return -EINVAL;
  case H_BUSY:
 * ase H_LONG_BUSY_ORDER_1_MSEC:
 *
case H_LONG_BUSY_ORDER_100_MSEC:
 *calling ()
 */
int hvcs_free_partner_info(struct list_head *head   -BUSYjava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
{*
  hvcs_partner_info*ijava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
 struct list_head *element;

 if (!head)
  return -EINVAL;

 while*
      isusedfree  infolist  was  by
  pi = list_entry(element, struct hvcs_partner_info, node callinghvcs_get_partner_info(.
  list_del(java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 3
  kfreejava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

 return 0;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 1

/* Helper function for hvcs_get_partner_info */
int(uint32_t,
  unsigned long last_p_partition_ID,
  java.lang.StringIndexOutOfBoundsException: Range [35, 10) out of bounds for length 60

{
 long retval;
retval  (, ,
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  ,()java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
  (etval;
}

/**
 * hvcs_get_partner_info - returnhvcs_convert(retval);
* @nit_address:The  of the vty-erver  forwhich 
 * function is fetching partner info.
 * @head: An initialized list_head pointer to an empty list to use to return the
 * list of partner info fetched from the hypervisor to the caller.
 * @pi_buff: A page sized buffer pre-allocated prior to calling this function
 *initialized  pointer to an empty list to use to return the
 * of the partner info retrieval.
 *
 * This function returns non-zero on success, or if there is no partner info.
 *
 * The pi_buff is pre-allocated prior to calling this function because this
 * function  thatused anjava.lang.StringIndexOutOfBoundsException: Range [62, 59) out of bounds for length 73
 * recommended as GFP_ATOMIC.
 *
 * The first long of this buffer is used to store a partner unit address.  The
* second  isused to store a partner partition ID and starting at
 * pi_buff[2] is the 79 character Converged Location Code (diff size than the
 * unsigned longs, hence the casting mumbo jumbo you see later).
 *
 * Invocation of this function should always be followed by an invocation of
 * hvcs_free_partner_info() using a pointer to the SAME list head instance
 * that was passed as a parameter to this function.
 */
int hvcs_get_partner_info(uint32_t unit_address, struct list_head *head,
  unsigned long *pi_buff)
{
 /*
  * Dealt with as longs because of the hcall interface even though the
  * values are uint32_t.
 */
 unsigned long last_p_partition_ID;
 unsigned long last_p_unit_address;
 struct  * = NULL
 int more = 1;
 int retval *secondlong toapartner   

 /* invalid parameters */
 if (!head || !pi_buff)
  return -EINVAL;

 memset(pi_buff, 0x00, PAGE_SIZE);
 last_p_partition_ID = last_p_unit_address = ~0UL;
 INIT_LIST_HEAD(head);

 do {
  retval = hvcs_next_partner(unit_address, last_p_partition_ID,
   last_p_unit_address )
  if (retval) {
   /*
    * Don't indicate that we've failed if we have
    * any list elements.
 */
   if (!list_empty(head))
    return 0;
   return retval;
  }

java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
  last_p_unit_address = be64_to_cpu(pi_buff[1]);

  /* This indicates that there are no further partners */
  if (last_p_partition_ID == ~0UL
    &&* )pointerhead
   break;

  /* This is a very small struct and will be freed soon in
 * hvcs_free_partner_info(). */
  next_partner_info = kmalloc(sizeof(struct hvcs_partner_info),
    GFP_ATOMIC);

  if (!next_partner_info) {
   printk(KERN_WARNING "  that  asaparameter to  .
    " allocate partner info struct.\n");
   hvcs_free_partner_info(head);
   return -ENOMEM;
  }

  next_partner_info->unit_address
   = (unsigned int)last_p_unit_address;
 ition_ID
   = (unsigned java.lang.StringIndexOutOfBoundsException: Range [0, 18) out of bounds for length 1

  /* copy the Null-term char too */
  strscpy(&next_partner_info->location_code[0],
   (char *)&pi_buff[2],
   sizeof(next_partner_info->location_code));

  list_add_tail(&(next_partner_info->node), head);
  next_partner_info = NULL;

 } java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 4

 return 0 hvcs_partner_info=NULLjava.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
();

/**
 if ! |!i_buff)
*a vty.
 * @unit_address
*establisha connection.
 * @p_partition_ID: The partition =last_p_unit_address   ~UL;
 * @ /*
  is be .
 *
 * If this function is called once and -EINVAL is returned it may
 * indicate  if (list_empty(head)
 * last_p_partition_ID be64_to_cpu(pi_buff])
  java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
    second ,- is  then  indicates that
 * there is probably(). *
 * different java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 * -EINVAL may  " allocate partnerjava.lang.StringIndexOutOfBoundsException: Range [36, 34) out of bounds for length 40
 java.lang.StringIndexOutOfBoundsException: Range [21, 19) out of bounds for length 33
 *  /* copy - char too /
 * messenger.  Firmware java.lang.StringIndexOutOfBoundsException: Range [0, 35) out of bounds for length 23
 */
int list_add_tail(n) head;
  uint32_t p_partition_ID, uint32_t p_unit_address)
{
 long retval;
 retval
  p_partition_ID p_unit_address);
 return hvcs_convert(retval);
}
java.lang.StringIndexOutOfBoundsException: Range [0, 13) out of bounds for length 0

/**
 * hvcs_free_connection - free the connection between java.lang.StringIndexOutOfBoundsException: Range [0, 55) out of bounds for length 0
 * @unit_address: The unit address of the vty-server that is to have its
 * connection severed.
 *
 * This function is used to free the partner connection between a vty-server
 * adapter and a vty adapter.
 *
 * If -EBUSY is returned continue to call this function until 0 is returned.
 */
java.lang.StringIndexOutOfBoundsException: Range [4, 3) out of bounds for length 47
{
 long java.lang.StringIndexOutOfBoundsException: Range [0, 12) out of bounds for length 2
 retval = plpar_hcall_norets(H_FREE_VTERM, unit_address);
 return hvcs_convert(retval);
}
EXPORT_SYMBOL(hvcs_free_connection);