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/*
* Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Authors:
* Eddie Dong <eddie.dong@intel.com>
* Dexuan Cui
* Jike Song <jike.song@intel.com>
*
* Contributors:
* Zhi Wang <zhi.a.wang@intel.com>
*
*/
#ifndef _GVT_MPT_H_
#define _GVT_MPT_H_
#include "gvt.h"
/**
* DOC: Hypervisor Service APIs for GVT-g Core Logic
*
* This is the glue layer between specific hypervisor MPT modules and GVT-g core
* logic. Each kind of hypervisor MPT module provides a collection of function
* callbacks and will be attached to GVT host when the driver is loading.
* GVT-g core logic will call these APIs to request specific services from
* hypervisor.
*/
/**
* intel_gvt_hypervisor_host_init - init GVT-g host side
*
* Returns:
* Zero on success, negative error code if failed
*/
static inline int intel_gvt_hypervisor_host_init(struct device *dev, void *gvt)
{
if (!intel_gvt_host.mpt->host_init)
return -ENODEV;
return intel_gvt_host.mpt->host_init(dev, gvt);
}
/**
* intel_gvt_hypervisor_host_exit - exit GVT-g host side
*/
static inline void intel_gvt_hypervisor_host_exit(struct device *dev, void *gvt)
{
/* optional to provide */
if (!intel_gvt_host.mpt->host_exit)
return;
intel_gvt_host.mpt->host_exit(dev, gvt);
}
/**
* intel_gvt_hypervisor_dma_map_guest_page - setup dma map for guest page
* @vgpu: a vGPU
* @gfn: guest pfn
* @size: page size
* @dma_addr: retrieve allocated dma addr
*
* Returns:
* 0 on success, negative error code if failed.
*/
static inline int intel_gvt_hypervisor_dma_map_guest_page(
struct intel_vgpu *vgpu, unsigned long gfn, unsigned long size,
dma_addr_t *dma_addr)
{
return intel_gvt_host.mpt->dma_map_guest_page(vgpu, gfn, size,
dma_addr);
}
/**
* intel_gvt_hypervisor_dma_unmap_guest_page - cancel dma map for guest page
* @vgpu: a vGPU
* @dma_addr: the mapped dma addr
*/
static inline void intel_gvt_hypervisor_dma_unmap_guest_page(
struct intel_vgpu *vgpu, dma_addr_t dma_addr)
{
intel_gvt_host.mpt->dma_unmap_guest_page(vgpu, dma_addr);
}
/**
* intel_gvt_hypervisor_dma_pin_guest_page - pin guest dma buf
* @vgpu: a vGPU
* @dma_addr: guest dma addr
*
* Returns:
* 0 on success, negative error code if failed.
*/
static inline int
intel_gvt_hypervisor_dma_pin_guest_page(struct intel_vgpu *vgpu,
dma_addr_t dma_addr)
{
return intel_gvt_host.mpt->dma_pin_guest_page(vgpu, dma_addr);
}
#endif /* _GVT_MPT_H_ */
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