drivers/gpu/drm/i915/i915_vgpu.h

   1 /*
   2  * Copyright(c) 2011-2015 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
  24 #ifndef _I915_VGPU_H_
  25 #define _I915_VGPU_H_
  26
  27 /* The MMIO offset of the shared info between guest and host emulator */
  28 #define VGT_PVINFO_PAGE 0x78000
  29 #define VGT_PVINFO_SIZE 0x1000
  30
  31 /*
  32  * The following structure pages are defined in GEN MMIO space
  33  * for virtualization. (One page for now)
  34  */
  35 #define VGT_MAGIC         0x4776544776544776ULL /* 'vGTvGTvG' */
  36 #define VGT_VERSION_MAJOR 1
  37 #define VGT_VERSION_MINOR 0
  38
  39 #define INTEL_VGT_IF_VERSION_ENCODE(major, minor) ((major) << 16 | (minor))
  40 #define INTEL_VGT_IF_VERSION \
  41         INTEL_VGT_IF_VERSION_ENCODE(VGT_VERSION_MAJOR, VGT_VERSION_MINOR)
  42
  43 /*
  44  * notifications from guest to vgpu device model
  45  */
  46 enum vgt_g2v_type {
  47         VGT_G2V_PPGTT_L3_PAGE_TABLE_CREATE = 2,
  48         VGT_G2V_PPGTT_L3_PAGE_TABLE_DESTROY,
  49         VGT_G2V_PPGTT_L4_PAGE_TABLE_CREATE,
  50         VGT_G2V_PPGTT_L4_PAGE_TABLE_DESTROY,
  51         VGT_G2V_EXECLIST_CONTEXT_CREATE,
  52         VGT_G2V_EXECLIST_CONTEXT_DESTROY,
  53         VGT_G2V_MAX,
  54 };
  55
  56 struct vgt_if {
  57         uint64_t magic;         /* VGT_MAGIC */
  58         uint16_t version_major;
  59         uint16_t version_minor;
  60         uint32_t vgt_id;        /* ID of vGT instance */
  61         uint32_t rsv1[12];      /* pad to offset 0x40 */
  62         /*
  63          *  Data structure to describe the balooning info of resources.
  64          *  Each VM can only have one portion of continuous area for now.
  65          *  (May support scattered resource in future)
  66          *  (starting from offset 0x40)
  67          */
  68         struct {
  69                 /* Aperture register balooning */
  70                 struct {
  71                         uint32_t base;
  72                         uint32_t size;
  73                 } mappable_gmadr;       /* aperture */
  74                 /* GMADR register balooning */
  75                 struct {
  76                         uint32_t base;
  77                         uint32_t size;
  78                 } nonmappable_gmadr;    /* non aperture */
  79                 /* allowed fence registers */
  80                 uint32_t fence_num;
  81                 uint32_t rsv2[3];
  82         } avail_rs;             /* available/assigned resource */
  83         uint32_t rsv3[0x200 - 24];      /* pad to half page */
  84         /*
  85          * The bottom half page is for response from Gfx driver to hypervisor.
  86          */
  87         uint32_t rsv4;
  88         uint32_t display_ready; /* ready for display owner switch */
  89
  90         uint32_t rsv5[4];
  91
  92         uint32_t g2v_notify;
  93         uint32_t rsv6[7];
  94
  95         struct {
  96                 uint32_t lo;
  97                 uint32_t hi;
  98         } pdp[4];
  99
 100         uint32_t execlist_context_descriptor_lo;
 101         uint32_t execlist_context_descriptor_hi;
 102
 103         uint32_t  rsv7[0x200 - 24];    /* pad to one page */
 104 } __packed;
 105
 106 #define vgtif_reg(x) \
 107         _MMIO((VGT_PVINFO_PAGE + (long)&((struct vgt_if *)NULL)->x))
 108
 109 /* vGPU display status to be used by the host side */
 110 #define VGT_DRV_DISPLAY_NOT_READY 0
 111 #define VGT_DRV_DISPLAY_READY     1  /* ready for display switch */
 112
 113 extern void i915_check_vgpu(struct drm_device *dev);
 114 extern int intel_vgt_balloon(struct drm_device *dev);
 115 extern void intel_vgt_deballoon(void);
 116
 117 #endif /* _I915_VGPU_H_ */