linux/arch/powerpc/platforms/iseries/hvlog.c
<<
>>
Prefs
   1/*
   2 * Copyright (C) 2001  Mike Corrigan IBM Corporation
   3 * 
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License as published by
   6 * the Free Software Foundation; either version 2 of the License, or
   7 * (at your option) any later version.
   8 */
   9
  10#include <asm/page.h>
  11#include <asm/abs_addr.h>
  12#include <asm/iseries/hv_call.h>
  13#include <asm/iseries/hv_call_sc.h>
  14#include <asm/iseries/hv_types.h>
  15
  16
  17void HvCall_writeLogBuffer(const void *buffer, u64 len)
  18{
  19        struct HvLpBufferList hv_buf;
  20        u64 left_this_page;
  21        u64 cur = virt_to_abs(buffer);
  22
  23        while (len) {
  24                hv_buf.addr = cur;
  25                left_this_page = ((cur & HW_PAGE_MASK) + HW_PAGE_SIZE) - cur;
  26                if (left_this_page > len)
  27                        left_this_page = len;
  28                hv_buf.len = left_this_page;
  29                len -= left_this_page;
  30                HvCall2(HvCallBaseWriteLogBuffer,
  31                                virt_to_abs(&hv_buf),
  32                                left_this_page);
  33                cur = (cur & HW_PAGE_MASK) + HW_PAGE_SIZE;
  34        }
  35}
  36