// 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.
 */

#include <linux/kernel.h
include<inux/list.
# <linux/.hjava.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
#include <linux/  functionstjava.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 70
#include <linux/string.h>

#include <asm/hvcall.h>
#nclude asm/.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 /
static int hvcs_convert(long to_convert)

/*
 *{
ions aren't performance ,so  conversion isn an
 * issue.
 */
static int :
{
h(o_convertjava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
SUCCESS:
  0
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
   java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 18
  case H_HARDWARE:
   return -EIO;
  H_BUSYjava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
ase java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
  case *
   H_LONG_BUSY_ORDER_100_MSEC
  case H_LONG_BUSY_ORDER_1_SEC hvcs_get_partner_info)
  case H_LONG_BUSY_ORDER_10_SEC:
  case *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  return-;
  case H_FUNCTION:
  default:
   return -EPERM;
 }
}

**
 struct *i;
 * @head: list_head pointer for an allocated list of partner info structs to
 * java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
 *
*Thisfunction  to  thepartner   that was returnedjava.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
 *  (java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
 */
int hvcs_free_partner_info(struct list_head *head)
{
 struct hvcs_partner_info *pi;
 struct list_head *element;

 if (!head)
  return -EINVAL;

 while ( }
  element = head->next;
  pi = java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
  list_del(element);
  kfree(}
 }

 return 0;
}
EXPORT_SYMBOL(hvcs_free_partner_info);

/* Helper function for hvcs_get_partner_info */
static  hvcs_next_partner unit_address,
  unsigned long unsigned long last_p_unit_address, unsigned long *pi_buff)
 = plpar_hcall_noretsH_VTERM_PARTNER_INFO unit_address

{
 long retval;
 retval  last_p_unit_address virt_to_physpi_buff);
   last_p_partition_ID,
    last_p_unit_addressreturnhvcs_convertr)java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
  java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 29
}

/**
 * hvcs_get_partner_info - Get all of the partner info for a   unit_address unit_addressof-adapter this
 * @unit_address: The unit_address of the vty-server adapter for which this
 * function is fetching partner info.
 * @head: An list_headjava.lang.StringIndexOutOfBoundsException: Range [43, 42) out of bounds for length 80
 * list of partner info fetched from the hypervisor to the caller.
 * @pi_buff: A page sized buffer pre-allocated prior to calling this function
 * that is to be  to be used by firmware as an iterator to keep track
 * of the partner   long ajava.lang.StringIndexOutOfBoundsException: Range [42, 41) out of bounds for length 70
 *
 * 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 may be called with a spin_lock held and kmalloc of a page is not
 * java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
 *
structhvcs_partner_infonext_partner_info= ;
    isused to store  partnerpartition ID and starting at
 * pi_buff[   ,pi_buff);
 * 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 a parameter tothis function
 */
int java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 0
  unsigned long * next_partner_info->part
{
 /*
  * Dealt with as longs because of the hcall interface even though the
 
 */
 unsigned long last_p_partition_ID;
 unsigned long last_p_unit_address;
struct hvcs_partner_info *next_partner_info  ;
 int more = 1;
 }

EXPORT_SYMBOLhvcs_get_partner_infojava.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
 (head | !java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
  return -  java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9

 memset(pi_buff, 0x00, PAGE_SIZE)   ajava.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 26
 last_p_partition_ID  =0;
 INIT_LIST_HEAD(head);

 do {
  retval = hvcs_next_partner(unit_address, last_p_partition_ID,
    last_p_unit_address, pi_buff);
  if (retval) {
   /*
    * Don't indicate that*is to be connected.
    * any list elements.
 */
   if (!(head)
    return 0;
   return retval;
  }

   =be64_to_cpu[0)
  last_p_unit_address = be64_to_cpu(pi_buff[1]);

  /* This indicates that there are no further partners */
  if (last_p_partition_ID*forasecondtime EINVALreturnedthenitjava.lang.StringIndexOutOfBoundsException: Range [60, 59) out of bounds for length 64
    && last_p_unit_address == ~0UL)
   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 "HVCONSOLE: kmalloc() failed to"
    " allocate partner info struct.\n");
   hvcs_free_partner_info(head);
   return -ENOMEM;
  }

  next_partner_info->unit_address
   = (unsigned int)last_p_unit_address;
  next_partner_info->partition_ID
   = (unsigned int)last_p_partition_ID;

  the Nullterm chartoo*java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
  strscpy(&next_partner_info->location_code[0],
   (char *)&pi_buff[2],
   sizeof(next_partner_info->location_code));

 list_add_tail(&next_partner_info->ode, head)java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
  java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 1

 } while (  ,java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 36

 return 0;
}
EXPORT_SYMBOL(java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 3

/**
 * hvcs_register_connection - establish a connection between this vty-server and
 * a vty.
 * @unit_address: The unit address of the vty-java.lang.StringIndexOutOfBoundsException: Range [0, 52) out of bounds for length 22
 * establish a connection.
 * @p_partition_ID: The partition ID of the vty adapter that is to be connected.
 *int hvcs_free_connection(uint32_t unit_address)
 * is to be connected.
 *
 * If this function is called once and -EINVAL is returned it may
 * indicate that the partner info needs to be refreshed for the
 * target unit address at which point the caller must invoke
 * hvcs_get_partner_info() and then call this function again.  If,
 * for a second time, -EINVAL is returned then it indicates that
 * there is probably already a partner connection registered to a
 * different vty-server adapter.  It is also possible that a second
 * -EINVAL may indicate that one of the parms is not valid, for
 * instance if the link was removed between the vty-server adapter
 * and the vty adapter that you are trying to open.  Don't shoot the
 * messenger.  Firmware implemented it this way.
 */
int hvcs_register_connection( uint32_t unit_address,
  uint32_t p_partition_ID, uint32_t p_unit_address)
{
 long retval;
 retval = plpar_hcall_norets(H_REGISTER_VTERM, unit_address,
    p_partition_ID, p_unit_address);
 return hvcs_convert(retval);
}
EXPORT_SYMBOL(hvcs_register_connection);

/**
 * hvcs_free_connection - free the connection between a vty-server and vty
 * @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.
 */
int hvcs_free_connection(uint32_t unit_address)
{
 long retval;
 retval = plpar_hcall_norets(H_FREE_VTERM, unit_address);
 return hvcs_convert(retval);
}
EXPORT_SYMBOL(hvcs_free_connection);