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