31 lines
800 B
C
31 lines
800 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* hvconsole.h
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* Copyright (C) 2004 Ryan S Arnold, IBM Corporation
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*
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* LPAR console support.
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*/
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#ifndef _PPC64_HVCONSOLE_H
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#define _PPC64_HVCONSOLE_H
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#ifdef __KERNEL__
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/*
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* PSeries firmware will only send/recv up to 16 bytes of character data per
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* hcall.
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*/
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#define MAX_VIO_PUT_CHARS 16
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#define SIZE_VIO_GET_CHARS 16
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/*
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* Vio firmware always attempts to fetch MAX_VIO_GET_CHARS chars. The 'count'
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* parm is included to conform to put_chars() function pointer template
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*/
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extern ssize_t hvc_get_chars(uint32_t vtermno, u8 *buf, size_t count);
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extern ssize_t hvc_put_chars(uint32_t vtermno, const u8 *buf, size_t count);
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/* Provided by HVC VIO */
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void hvc_vio_init_early(void);
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#endif /* __KERNEL__ */
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#endif /* _PPC64_HVCONSOLE_H */
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