cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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vbox_drv.h (4747B)

      1/* SPDX-License-Identifier: MIT */
      2/*
      3 * Copyright (C) 2013-2017 Oracle Corporation
      4 * This file is based on ast_drv.h
      5 * Copyright 2012 Red Hat Inc.
      6 * Authors: Dave Airlie <airlied@redhat.com>
      7 *          Michael Thayer <michael.thayer@oracle.com,
      8 *          Hans de Goede <hdegoede@redhat.com>
      9 */
     10#ifndef __VBOX_DRV_H__
     11#define __VBOX_DRV_H__
     12
     13#include <linux/genalloc.h>
     14#include <linux/io.h>
     15#include <linux/irqreturn.h>
     16#include <linux/string.h>
     17
     18#include <drm/drm_encoder.h>
     19#include <drm/drm_gem.h>
     20#include <drm/drm_gem_vram_helper.h>
     21
     22#include "vboxvideo_guest.h"
     23#include "vboxvideo_vbe.h"
     24#include "hgsmi_ch_setup.h"
     25
     26#define DRIVER_NAME         "vboxvideo"
     27#define DRIVER_DESC         "Oracle VM VirtualBox Graphics Card"
     28#define DRIVER_DATE         "20130823"
     29
     30#define DRIVER_MAJOR        1
     31#define DRIVER_MINOR        0
     32#define DRIVER_PATCHLEVEL   0
     33
     34#define VBOX_MAX_CURSOR_WIDTH  64
     35#define VBOX_MAX_CURSOR_HEIGHT 64
     36#define CURSOR_PIXEL_COUNT (VBOX_MAX_CURSOR_WIDTH * VBOX_MAX_CURSOR_HEIGHT)
     37#define CURSOR_DATA_SIZE (CURSOR_PIXEL_COUNT * 4 + CURSOR_PIXEL_COUNT / 8)
     38
     39#define VBOX_MAX_SCREENS  32
     40
     41#define GUEST_HEAP_OFFSET(vbox) ((vbox)->full_vram_size - \
     42				 VBVA_ADAPTER_INFORMATION_SIZE)
     43#define GUEST_HEAP_SIZE   VBVA_ADAPTER_INFORMATION_SIZE
     44#define GUEST_HEAP_USABLE_SIZE (VBVA_ADAPTER_INFORMATION_SIZE - \
     45				sizeof(struct hgsmi_host_flags))
     46#define HOST_FLAGS_OFFSET GUEST_HEAP_USABLE_SIZE
     47
     48struct vbox_private {
     49	/* Must be first; or we must define our own release callback */
     50	struct drm_device ddev;
     51
     52	u8 __iomem *guest_heap;
     53	u8 __iomem *vbva_buffers;
     54	struct gen_pool *guest_pool;
     55	struct vbva_buf_ctx *vbva_info;
     56	bool any_pitch;
     57	u32 num_crtcs;
     58	/* Amount of available VRAM, including space used for buffers. */
     59	u32 full_vram_size;
     60	/* Amount of available VRAM, not including space used for buffers. */
     61	u32 available_vram_size;
     62	/* Array of structures for receiving mode hints. */
     63	struct vbva_modehint *last_mode_hints;
     64
     65	int fb_mtrr;
     66
     67	struct mutex hw_mutex; /* protects modeset and accel/vbva accesses */
     68	struct work_struct hotplug_work;
     69	u32 input_mapping_width;
     70	u32 input_mapping_height;
     71	/*
     72	 * Is user-space using an X.Org-style layout of one large frame-buffer
     73	 * encompassing all screen ones or is the fbdev console active?
     74	 */
     75	bool single_framebuffer;
     76	u8 cursor_data[CURSOR_DATA_SIZE];
     77};
     78
     79#undef CURSOR_PIXEL_COUNT
     80#undef CURSOR_DATA_SIZE
     81
     82struct vbox_connector {
     83	struct drm_connector base;
     84	char name[32];
     85	struct vbox_crtc *vbox_crtc;
     86	struct {
     87		u32 width;
     88		u32 height;
     89		bool disconnected;
     90	} mode_hint;
     91};
     92
     93struct vbox_crtc {
     94	struct drm_crtc base;
     95	bool disconnected;
     96	unsigned int crtc_id;
     97	u32 fb_offset;
     98	bool cursor_enabled;
     99	u32 x_hint;
    100	u32 y_hint;
    101	/*
    102	 * When setting a mode we not only pass the mode to the hypervisor,
    103	 * but also information on how to map / translate input coordinates
    104	 * for the emulated USB tablet.  This input-mapping may change when
    105	 * the mode on *another* crtc changes.
    106	 *
    107	 * This means that sometimes we must do a modeset on other crtc-s then
    108	 * the one being changed to update the input-mapping. Including crtc-s
    109	 * which may be disabled inside the guest (shown as a black window
    110	 * on the host unless closed by the user).
    111	 *
    112	 * With atomic modesetting the mode-info of disabled crtcs gets zeroed
    113	 * yet we need it when updating the input-map to avoid resizing the
    114	 * window as a side effect of a mode_set on another crtc. Therefor we
    115	 * cache the info of the last mode below.
    116	 */
    117	u32 width;
    118	u32 height;
    119	u32 x;
    120	u32 y;
    121};
    122
    123struct vbox_encoder {
    124	struct drm_encoder base;
    125};
    126
    127#define to_vbox_crtc(x) container_of(x, struct vbox_crtc, base)
    128#define to_vbox_connector(x) container_of(x, struct vbox_connector, base)
    129#define to_vbox_encoder(x) container_of(x, struct vbox_encoder, base)
    130#define to_vbox_dev(x) container_of(x, struct vbox_private, ddev)
    131
    132bool vbox_check_supported(u16 id);
    133int vbox_hw_init(struct vbox_private *vbox);
    134void vbox_hw_fini(struct vbox_private *vbox);
    135
    136int vbox_mode_init(struct vbox_private *vbox);
    137void vbox_mode_fini(struct vbox_private *vbox);
    138
    139void vbox_report_caps(struct vbox_private *vbox);
    140
    141int vbox_mm_init(struct vbox_private *vbox);
    142
    143/* vbox_irq.c */
    144int vbox_irq_init(struct vbox_private *vbox);
    145void vbox_irq_fini(struct vbox_private *vbox);
    146void vbox_report_hotplug(struct vbox_private *vbox);
    147
    148/* vbox_hgsmi.c */
    149void *hgsmi_buffer_alloc(struct gen_pool *guest_pool, size_t size,
    150			 u8 channel, u16 channel_info);
    151void hgsmi_buffer_free(struct gen_pool *guest_pool, void *buf);
    152int hgsmi_buffer_submit(struct gen_pool *guest_pool, void *buf);
    153
    154static inline void vbox_write_ioport(u16 index, u16 data)
    155{
    156	outw(index, VBE_DISPI_IOPORT_INDEX);
    157	outw(data, VBE_DISPI_IOPORT_DATA);
    158}
    159
    160#endif