drivers/gpu/drm/i915/gvt/hypercall.h

   1 /*
   2  * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors:
  24  *    Eddie Dong <eddie.dong@intel.com>
  25  *    Dexuan Cui
  26  *    Jike Song <jike.song@intel.com>
  27  *
  28  * Contributors:
  29  *    Zhi Wang <zhi.a.wang@intel.com>
  30  *
  31  */
  32
  33 #ifndef _GVT_HYPERCALL_H_
  34 #define _GVT_HYPERCALL_H_
  35
  36 struct intel_gvt_io_emulation_ops {
  37         int (*emulate_cfg_read)(void *, unsigned int, void *, unsigned int);
  38         int (*emulate_cfg_write)(void *, unsigned int, void *, unsigned int);
  39         int (*emulate_mmio_read)(void *, u64, void *, unsigned int);
  40         int (*emulate_mmio_write)(void *, u64, void *, unsigned int);
  41 };
  42
  43 extern struct intel_gvt_io_emulation_ops intel_gvt_io_emulation_ops;
  44
  45 /*
  46  * Specific GVT-g MPT modules function collections. Currently GVT-g supports
  47  * both Xen and KVM by providing dedicated hypervisor-related MPT modules.
  48  */
  49 struct intel_gvt_mpt {
  50         int (*detect_host)(void);
  51         int (*attach_vgpu)(void *vgpu, unsigned long *handle);
  52         void (*detach_vgpu)(unsigned long handle);
  53         int (*inject_msi)(unsigned long handle, u32 addr, u16 data);
  54         unsigned long (*from_virt_to_mfn)(void *p);
  55         int (*set_wp_page)(unsigned long handle, u64 gfn);
  56         int (*unset_wp_page)(unsigned long handle, u64 gfn);
  57         int (*read_gpa)(unsigned long handle, unsigned long gpa, void *buf,
  58                         unsigned long len);
  59         int (*write_gpa)(unsigned long handle, unsigned long gpa, void *buf,
  60                          unsigned long len);
  61         unsigned long (*gfn_to_mfn)(unsigned long handle, unsigned long gfn);
  62         int (*map_gfn_to_mfn)(unsigned long handle, unsigned long gfn,
  63                               unsigned long mfn, unsigned int nr, bool map,
  64                               int type);
  65         int (*set_trap_area)(unsigned long handle, u64 start, u64 end,
  66                              bool map);
  67 };
  68
  69 extern struct intel_gvt_mpt xengt_mpt;
  70 extern struct intel_gvt_mpt kvmgt_mpt;
  71
  72 #endif /* _GVT_HYPERCALL_H_ */