61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
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/*
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* Copyright 2010 Tilera Corporation. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for
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* more details.
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*
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* This header defines a wrapper interface for managing hypervisor
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* device calls that will result in an interrupt at some later time.
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* In particular, this provides wrappers for hv_preada() and
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* hv_pwritea().
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*/
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#ifndef _ASM_TILE_HV_DRIVER_H
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#define _ASM_TILE_HV_DRIVER_H
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#include <hv/hypervisor.h>
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struct hv_driver_cb;
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/* A callback to be invoked when an operation completes. */
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typedef void hv_driver_callback_t(struct hv_driver_cb *cb, __hv32 result);
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/*
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* A structure to hold information about an outstanding call.
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* The driver must allocate a separate structure for each call.
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*/
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struct hv_driver_cb {
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hv_driver_callback_t *callback; /* Function to call on interrupt. */
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void *dev; /* Driver-specific state variable. */
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};
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/* Wrapper for invoking hv_dev_preada(). */
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static inline int
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tile_hv_dev_preada(int devhdl, __hv32 flags, __hv32 sgl_len,
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HV_SGL sgl[/* sgl_len */], __hv64 offset,
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struct hv_driver_cb *callback)
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{
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return hv_dev_preada(devhdl, flags, sgl_len, sgl,
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offset, (HV_IntArg)callback);
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}
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/* Wrapper for invoking hv_dev_pwritea(). */
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static inline int
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tile_hv_dev_pwritea(int devhdl, __hv32 flags, __hv32 sgl_len,
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HV_SGL sgl[/* sgl_len */], __hv64 offset,
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struct hv_driver_cb *callback)
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{
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return hv_dev_pwritea(devhdl, flags, sgl_len, sgl,
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offset, (HV_IntArg)callback);
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}
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#endif /* _ASM_TILE_HV_DRIVER_H */
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