tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
29#define DRIVER_MAJOR 1
30#define DRIVER_MINOR 0
31#define DRIVER_PATCHLEVEL 0
32
33#define VBOX_MAX_CURSOR_WIDTH 64
34#define VBOX_MAX_CURSOR_HEIGHT 64
35#define CURSOR_PIXEL_COUNT (VBOX_MAX_CURSOR_WIDTH * VBOX_MAX_CURSOR_HEIGHT)
36#define CURSOR_DATA_SIZE (CURSOR_PIXEL_COUNT * 4 + CURSOR_PIXEL_COUNT / 8)
37
38#define VBOX_MAX_SCREENS 32
39
40#define GUEST_HEAP_OFFSET(vbox) ((vbox)->full_vram_size - \
41 VBVA_ADAPTER_INFORMATION_SIZE)
42#define GUEST_HEAP_SIZE VBVA_ADAPTER_INFORMATION_SIZE
43#define GUEST_HEAP_USABLE_SIZE (VBVA_ADAPTER_INFORMATION_SIZE - \
44 sizeof(struct hgsmi_host_flags))
45#define HOST_FLAGS_OFFSET GUEST_HEAP_USABLE_SIZE
46
47struct vbox_private {
48 /* Must be first; or we must define our own release callback */
49 struct drm_device ddev;
50
51 u8 __iomem *guest_heap;
52 u8 __iomem *vbva_buffers;
53 struct gen_pool *guest_pool;
54 struct vbva_buf_ctx *vbva_info;
55 bool any_pitch;
56 u32 num_crtcs;
57 /* Amount of available VRAM, including space used for buffers. */
58 u32 full_vram_size;
59 /* Amount of available VRAM, not including space used for buffers. */
60 u32 available_vram_size;
61 /* Array of structures for receiving mode hints. */
62 struct vbva_modehint *last_mode_hints;
63
64 int fb_mtrr;
65
66 struct mutex hw_mutex; /* protects modeset and accel/vbva accesses */
67 struct work_struct hotplug_work;
68 u32 input_mapping_width;
69 u32 input_mapping_height;
70 /*
71 * Is user-space using an X.Org-style layout of one large frame-buffer
72 * encompassing all screen ones or is the fbdev console active?
73 */
74 bool single_framebuffer;
75 u8 cursor_data[CURSOR_DATA_SIZE];
76};
77
78#undef CURSOR_PIXEL_COUNT
79#undef CURSOR_DATA_SIZE
80
81struct vbox_connector {
82 struct drm_connector base;
83 char name[32];
84 struct vbox_crtc *vbox_crtc;
85 struct {
86 u32 width;
87 u32 height;
88 bool disconnected;
89 } mode_hint;
90};
91
92struct vbox_crtc {
93 struct drm_crtc base;
94 bool disconnected;
95 unsigned int crtc_id;
96 u32 fb_offset;
97 bool cursor_enabled;
98 u32 x_hint;
99 u32 y_hint;
100 /*
101 * When setting a mode we not only pass the mode to the hypervisor,
102 * but also information on how to map / translate input coordinates
103 * for the emulated USB tablet. This input-mapping may change when
104 * the mode on *another* crtc changes.
105 *
106 * This means that sometimes we must do a modeset on other crtc-s then
107 * the one being changed to update the input-mapping. Including crtc-s
108 * which may be disabled inside the guest (shown as a black window
109 * on the host unless closed by the user).
110 *
111 * With atomic modesetting the mode-info of disabled crtcs gets zeroed
112 * yet we need it when updating the input-map to avoid resizing the
113 * window as a side effect of a mode_set on another crtc. Therefor we
114 * cache the info of the last mode below.
115 */
116 u32 width;
117 u32 height;
118 u32 x;
119 u32 y;
120};
121
122struct vbox_encoder {
123 struct drm_encoder base;
124};
125
126#define to_vbox_crtc(x) container_of(x, struct vbox_crtc, base)
127#define to_vbox_connector(x) container_of(x, struct vbox_connector, base)
128#define to_vbox_encoder(x) container_of(x, struct vbox_encoder, base)
129#define to_vbox_dev(x) container_of(x, struct vbox_private, ddev)
130
131bool vbox_check_supported(u16 id);
132int vbox_hw_init(struct vbox_private *vbox);
133void vbox_hw_fini(struct vbox_private *vbox);
134
135int vbox_mode_init(struct vbox_private *vbox);
136void vbox_mode_fini(struct vbox_private *vbox);
137
138void vbox_report_caps(struct vbox_private *vbox);
139
140int vbox_mm_init(struct vbox_private *vbox);
141
142/* vbox_irq.c */
143int vbox_irq_init(struct vbox_private *vbox);
144void vbox_irq_fini(struct vbox_private *vbox);
145void vbox_report_hotplug(struct vbox_private *vbox);
146
147/* vbox_hgsmi.c */
148void *hgsmi_buffer_alloc(struct gen_pool *guest_pool, size_t size,
149 u8 channel, u16 channel_info);
150void hgsmi_buffer_free(struct gen_pool *guest_pool, void *buf);
151int hgsmi_buffer_submit(struct gen_pool *guest_pool, void *buf);
152
153static inline void vbox_write_ioport(u16 index, u16 data)
154{
155 outw(index, VBE_DISPI_IOPORT_INDEX);
156 outw(data, VBE_DISPI_IOPORT_DATA);
157}
158
159#endif