e9848d62ab
This file is only exporting symbols and so should use export.h and not module.h header. But in doing the conversion, we will uncover that it was implicitly using errno.h via module.h: CC arch/powerpc/platforms/pseries/hvconsole.o arch/powerpc/platforms/pseries/hvconsole.c: In function 'hvc_put_chars': arch/powerpc/platforms/pseries/hvconsole.c:77: error: 'EIO' undeclared (first use in this function) Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
/*
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* hvconsole.c
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* Copyright (C) 2004 Hollis Blanchard, IBM Corporation
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* Copyright (C) 2004 IBM Corporation
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*
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* Additional Author(s):
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* Ryan S. Arnold <rsa@us.ibm.com>
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*
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* LPAR console support.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/export.h>
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#include <linux/errno.h>
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#include <asm/hvcall.h>
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#include <asm/hvconsole.h>
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#include "plpar_wrappers.h"
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/**
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* hvc_get_chars - retrieve characters from firmware for denoted vterm adatper
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* @vtermno: The vtermno or unit_address of the adapter from which to fetch the
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* data.
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* @buf: The character buffer into which to put the character data fetched from
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* firmware.
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* @count: not used?
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*/
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int hvc_get_chars(uint32_t vtermno, char *buf, int count)
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{
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unsigned long got;
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if (plpar_get_term_char(vtermno, &got, buf) == H_SUCCESS)
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return got;
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return 0;
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}
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EXPORT_SYMBOL(hvc_get_chars);
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/**
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* hvc_put_chars: send characters to firmware for denoted vterm adapter
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* @vtermno: The vtermno or unit_address of the adapter from which the data
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* originated.
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* @buf: The character buffer that contains the character data to send to
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* firmware.
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* @count: Send this number of characters.
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*/
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int hvc_put_chars(uint32_t vtermno, const char *buf, int count)
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{
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unsigned long *lbuf = (unsigned long *) buf;
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long ret;
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/* hcall will ret H_PARAMETER if 'count' exceeds firmware max.*/
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if (count > MAX_VIO_PUT_CHARS)
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count = MAX_VIO_PUT_CHARS;
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ret = plpar_hcall_norets(H_PUT_TERM_CHAR, vtermno, count, lbuf[0],
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lbuf[1]);
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if (ret == H_SUCCESS)
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return count;
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if (ret == H_BUSY)
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return -EAGAIN;
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return -EIO;
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}
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EXPORT_SYMBOL(hvc_put_chars);
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