linux_dsm_epyc7002/drivers/gpu/drm/i915/i915_pvinfo.h
Zhi Wang b2a5d1e716 drm/i915: Use offsetof() to calculate the offset of members in PVINFO page
To get the offset of the members in PVINFO page, offsetof() looks much
better than the tricky approach in current code.

v7:

- Move "offsetof()" modification into a dedicated patch. (Joonas)

Suggested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1466078825-6662-3-git-send-email-zhi.a.wang@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2016-06-17 19:44:25 +01:00

114 lines
3.4 KiB
C

/*
* 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_
/* 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)
/*
* 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,
};
struct vgt_if {
u64 magic; /* VGT_MAGIC */
uint16_t version_major;
uint16_t version_minor;
u32 vgt_id; /* ID of vGT instance */
u32 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 {
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[7];
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_reg(x) \
_MMIO((VGT_PVINFO_PAGE + offsetof(struct vgt_if, 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_ */