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 #include <linux/types.h>
  37
  38 struct device;
  39
  40 enum hypervisor_type {
  41         INTEL_GVT_HYPERVISOR_XEN = 0,
  42         INTEL_GVT_HYPERVISOR_KVM,
  43 };
  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         enum hypervisor_type type;
  51         int (*host_init)(struct device *dev, void *gvt, const void *ops);
  52         void (*host_exit)(struct device *dev);
  53         int (*attach_vgpu)(void *vgpu, unsigned long *handle);
  54         void (*detach_vgpu)(void *vgpu);
  55         int (*inject_msi)(unsigned long handle, u32 addr, u16 data);
  56         unsigned long (*from_virt_to_mfn)(void *p);
  57         int (*enable_page_track)(unsigned long handle, u64 gfn);
  58         int (*disable_page_track)(unsigned long handle, u64 gfn);
  59         int (*read_gpa)(unsigned long handle, unsigned long gpa, void *buf,
  60                         unsigned long len);
  61         int (*write_gpa)(unsigned long handle, unsigned long gpa, void *buf,
  62                          unsigned long len);
  63         unsigned long (*gfn_to_mfn)(unsigned long handle, unsigned long gfn);
  64
  65         int (*dma_map_guest_page)(unsigned long handle, unsigned long gfn,
  66                                   unsigned long size, dma_addr_t *dma_addr);
  67         void (*dma_unmap_guest_page)(unsigned long handle, dma_addr_t dma_addr);
  68
  69         int (*dma_pin_guest_page)(unsigned long handle, dma_addr_t dma_addr);
  70
  71         int (*map_gfn_to_mfn)(unsigned long handle, unsigned long gfn,
  72                               unsigned long mfn, unsigned int nr, bool map);
  73         int (*set_trap_area)(unsigned long handle, u64 start, u64 end,
  74                              bool map);
  75         int (*set_opregion)(void *vgpu);
  76         int (*set_edid)(void *vgpu, int port_num);
  77         int (*get_vfio_device)(void *vgpu);
  78         void (*put_vfio_device)(void *vgpu);
  79         bool (*is_valid_gfn)(unsigned long handle, unsigned long gfn);
  80 };
  81
  82 #endif /* _GVT_HYPERCALL_H_ */