c8fe6a6811
This patch introduces vGPU interrupt emulation framework. The vGPU intrerrupt emulation framework is an event-based interrupt emulation framework. It's responsible for emulating GEN hardware interrupts during emulating other HW behaviour. It consists several components: - Descriptions of interrupt register bit - Upper level <-> lower level interrupt mapping - GEN HW IER/IMR/IIR register emulation routines - Event-based interrupt propagation interface When a GVT-g component wants to inject an interrupt to a VM during a emulation, first it should specify the event needs to be emulated and the framework will deal with the rest of emulation: - Generating related virtual IIR bit according to virtual IER and IMRs, - Generate related virtual upper level virtual IIR bit accodring to the per-platform interrupt mapping - Injecting a MSI to VM Signed-off-by: Zhi Wang <zhi.a.wang@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
51 lines
1.8 KiB
C
51 lines
1.8 KiB
C
/*
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* Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Authors:
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* Eddie Dong <eddie.dong@intel.com>
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* Dexuan Cui
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* Jike Song <jike.song@intel.com>
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*
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* Contributors:
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* Zhi Wang <zhi.a.wang@intel.com>
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*
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*/
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#ifndef _GVT_HYPERCALL_H_
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#define _GVT_HYPERCALL_H_
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/*
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* Specific GVT-g MPT modules function collections. Currently GVT-g supports
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* both Xen and KVM by providing dedicated hypervisor-related MPT modules.
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*/
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struct intel_gvt_mpt {
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int (*detect_host)(void);
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int (*attach_vgpu)(void *vgpu, unsigned long *handle);
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void (*detach_vgpu)(unsigned long handle);
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int (*inject_msi)(unsigned long handle, u32 addr, u16 data);
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};
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extern struct intel_gvt_mpt xengt_mpt;
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extern struct intel_gvt_mpt kvmgt_mpt;
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#endif /* _GVT_HYPERCALL_H_ */
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