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/*
* Copyright(c) 2011-2015 Intel Corporation. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _I915_VGPU_H_
#define _I915_VGPU_H_
/* The MMIO offset of the shared info between guest and host emulator */
#define VGT_PVINFO_PAGE 0x78000
#define VGT_PVINFO_SIZE 0x1000
/*
* The following structure pages are defined in GEN MMIO space
* for virtualization. (One page for now)
*/
#define VGT_MAGIC 0x4776544776544776ULL /* 'vGTvGTvG' */
#define VGT_VERSION_MAJOR 1
#define VGT_VERSION_MINOR 0
#define INTEL_VGT_IF_VERSION_ENCODE(major, minor) ((major) << 16 | (minor))
#define INTEL_VGT_IF_VERSION \
INTEL_VGT_IF_VERSION_ENCODE(VGT_VERSION_MAJOR, VGT_VERSION_MINOR)
struct vgt_if {
uint64_t magic; /* VGT_MAGIC */
uint16_t version_major;
uint16_t version_minor;
uint32_t vgt_id; /* ID of vGT instance */
uint32_t rsv1[12]; /* pad to offset 0x40 */
/*
* Data structure to describe the balooning info of resources.
* Each VM can only have one portion of continuous area for now.
* (May support scattered resource in future)
* (starting from offset 0x40)
*/
struct {
/* Aperture register balooning */
struct {
uint32_t base;
uint32_t size;
} mappable_gmadr; /* aperture */
/* GMADR register balooning */
struct {
uint32_t base;
uint32_t size;
} nonmappable_gmadr; /* non aperture */
/* allowed fence registers */
uint32_t fence_num;
uint32_t rsv2[3];
} avail_rs; /* available/assigned resource */
uint32_t rsv3[0x200 - 24]; /* pad to half page */
/*
* The bottom half page is for response from Gfx driver to hypervisor.
* Set to reserved fields temporarily by now.
*/
uint32_t rsv4;
uint32_t display_ready; /* ready for display owner switch */
uint32_t rsv5[0x200 - 2]; /* pad to one page */
} __packed;
#define vgtif_reg(x) \
(VGT_PVINFO_PAGE + (long)&((struct vgt_if *)NULL)->x)
/* vGPU display status to be used by the host side */
#define VGT_DRV_DISPLAY_NOT_READY 0
#define VGT_DRV_DISPLAY_READY 1 /* ready for display switch */
extern void i915_check_vgpu(struct drm_device *dev);
extern int intel_vgt_balloon(struct drm_device *dev);
extern void intel_vgt_deballoon(void);
#endif /* _I915_VGPU_H_ */
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