/*
* Copyright(c) 2011-2016 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_PVINFO_H_
#define _I915_PVINFO_H_
#include <linux/types.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
/*
* notifications from guest to vgpu device model
*/
enum vgt_g2v_type {
VGT_G2V_PPGTT_L3_PAGE_TABLE_CREATE = 2,
VGT_G2V_PPGTT_L3_PAGE_TABLE_DESTROY,
VGT_G2V_PPGTT_L4_PAGE_TABLE_CREATE,
VGT_G2V_PPGTT_L4_PAGE_TABLE_DESTROY,
VGT_G2V_EXECLIST_CONTEXT_CREATE,
VGT_G2V_EXECLIST_CONTEXT_DESTROY,
VGT_G2V_MAX,
};
/*
* VGT capabilities type
*/
#define VGT_CAPS_FULL_PPGTT BIT(2)
#define VGT_CAPS_HWSP_EMULATION BIT(3)
#define VGT_CAPS_HUGE_GTT BIT(4)
struct vgt_if {
u64 magic; /* VGT_MAGIC */
u16 version_major;
u16 version_minor;
u32 vgt_id; /* ID of vGT instance */
u32 vgt_caps; /* VGT capabilities */
u32 rsv1[11]; /* 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 {
u32 base;
u32 size;
} mappable_gmadr; /* aperture */
/* GMADR register balooning */
struct {
u32 base;
u32 size;
} nonmappable_gmadr; /* non aperture */
/* allowed fence registers */
u32 fence_num;
u32 rsv2[3];
} avail_rs; /* available/assigned resource */
u32 rsv3[0x200 - 24]; /* pad to half page */
/*
* The bottom half page is for response from Gfx driver to hypervisor.
*/
u32 rsv4;
u32 display_ready; /* ready for display owner switch */
u32 rsv5[4];
u32 g2v_notify;
u32 rsv6[5];
u32 cursor_x_hot;
u32 cursor_y_hot;
struct {
u32 lo;
u32 hi;
} pdp[4];
u32 execlist_context_descriptor_lo;
u32 execlist_context_descriptor_hi;
u32 rsv7[0x200 - 24]; /* pad to one page */
} __packed;
#define vgtif_offset(x) (offsetof(struct vgt_if, x))
#define vgtif_reg(x) _MMIO(VGT_PVINFO_PAGE + vgtif_offset(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 */
#endif /* _I915_PVINFO_H_ */
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