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615c16a9d8
during the emulation of virtual reset: 1. only reset the engine related mmio ending with MMIO offset Master_IRQ, not include display stuff. 2. fences are not required to set default value as well to prevent screen flicking. this will fix the issue of Guest screen hang while running Force tdr in Linux guest. v2: - only reset the engine related mmio. (Zhenyu & Zhiyuan) v3: - IMR/Ring mode registers are not save/restored. (Changbin) v4: - redefine the MMIO reset offset for easy understanding. (Zhenyu) - pvinfo can be reset. (Zhenyu) v5: - add more comments for mmio reset. (Zhenyu) Cc: Changbin Du <changbin.du@intel.com> Cc: Zhenyu Wang <zhenyuw@linux.intel.com> Cc: Lv zhiyuan <zhiyuan.lv@intel.com> Cc: Zhang Yulei <yulei.zhang@intel.com> Signed-off-by: fred gao <fred.gao@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
102 lines
3.3 KiB
C
102 lines
3.3 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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* Ke Yu
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* Kevin Tian <kevin.tian@intel.com>
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* Dexuan Cui
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*
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* Contributors:
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* Tina Zhang <tina.zhang@intel.com>
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* Min He <min.he@intel.com>
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* Niu Bing <bing.niu@intel.com>
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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_MMIO_H_
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#define _GVT_MMIO_H_
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struct intel_gvt;
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struct intel_vgpu;
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#define D_BDW (1 << 0)
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#define D_SKL (1 << 1)
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#define D_KBL (1 << 2)
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#define D_GEN9PLUS (D_SKL | D_KBL)
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#define D_GEN8PLUS (D_BDW | D_SKL | D_KBL)
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#define D_SKL_PLUS (D_SKL | D_KBL)
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#define D_BDW_PLUS (D_BDW | D_SKL | D_KBL)
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#define D_PRE_SKL (D_BDW)
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#define D_ALL (D_BDW | D_SKL | D_KBL)
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typedef int (*gvt_mmio_func)(struct intel_vgpu *, unsigned int, void *,
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unsigned int);
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struct intel_gvt_mmio_info {
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u32 offset;
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u64 ro_mask;
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u32 device;
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gvt_mmio_func read;
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gvt_mmio_func write;
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u32 addr_range;
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struct hlist_node node;
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};
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unsigned long intel_gvt_get_device_type(struct intel_gvt *gvt);
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bool intel_gvt_match_device(struct intel_gvt *gvt, unsigned long device);
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int intel_gvt_setup_mmio_info(struct intel_gvt *gvt);
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void intel_gvt_clean_mmio_info(struct intel_gvt *gvt);
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#define INTEL_GVT_MMIO_OFFSET(reg) ({ \
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typeof(reg) __reg = reg; \
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u32 *offset = (u32 *)&__reg; \
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*offset; \
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})
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int intel_vgpu_init_mmio(struct intel_vgpu *vgpu);
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void intel_vgpu_reset_mmio(struct intel_vgpu *vgpu, bool dmlr);
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void intel_vgpu_clean_mmio(struct intel_vgpu *vgpu);
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int intel_vgpu_gpa_to_mmio_offset(struct intel_vgpu *vgpu, u64 gpa);
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int intel_vgpu_emulate_mmio_read(struct intel_vgpu *vgpu, u64 pa,
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void *p_data, unsigned int bytes);
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int intel_vgpu_emulate_mmio_write(struct intel_vgpu *vgpu, u64 pa,
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void *p_data, unsigned int bytes);
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int intel_vgpu_default_mmio_read(struct intel_vgpu *vgpu, unsigned int offset,
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void *p_data, unsigned int bytes);
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int intel_vgpu_default_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
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void *p_data, unsigned int bytes);
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bool intel_gvt_in_force_nonpriv_whitelist(struct intel_gvt *gvt,
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unsigned int offset);
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int intel_vgpu_mmio_reg_rw(struct intel_vgpu *vgpu, unsigned int offset,
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void *pdata, unsigned int bytes, bool is_read);
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#endif
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