1 /* $NetBSD: vbox_drv.h,v 1.2 2021/12/18 23:45:44 riastradh Exp $ */ 2 3 /* SPDX-License-Identifier: MIT */ 4 /* 5 * Copyright (C) 2013-2017 Oracle Corporation 6 * This file is based on ast_drv.h 7 * Copyright 2012 Red Hat Inc. 8 * Authors: Dave Airlie <airlied (at) redhat.com> 9 * Michael Thayer <michael.thayer (at) oracle.com, 10 * Hans de Goede <hdegoede (at) redhat.com> 11 */ 12 #ifndef __VBOX_DRV_H__ 13 #define __VBOX_DRV_H__ 14 15 #include <linux/genalloc.h> 16 #include <linux/io.h> 17 #include <linux/irqreturn.h> 18 #include <linux/string.h> 19 20 #include <drm/drm_encoder.h> 21 #include <drm/drm_gem.h> 22 #include <drm/drm_gem_vram_helper.h> 23 24 #include "vboxvideo_guest.h" 25 #include "vboxvideo_vbe.h" 26 #include "hgsmi_ch_setup.h" 27 28 #define DRIVER_NAME "vboxvideo" 29 #define DRIVER_DESC "Oracle VM VirtualBox Graphics Card" 30 #define DRIVER_DATE "20130823" 31 32 #define DRIVER_MAJOR 1 33 #define DRIVER_MINOR 0 34 #define DRIVER_PATCHLEVEL 0 35 36 #define VBOX_MAX_CURSOR_WIDTH 64 37 #define VBOX_MAX_CURSOR_HEIGHT 64 38 #define CURSOR_PIXEL_COUNT (VBOX_MAX_CURSOR_WIDTH * VBOX_MAX_CURSOR_HEIGHT) 39 #define CURSOR_DATA_SIZE (CURSOR_PIXEL_COUNT * 4 + CURSOR_PIXEL_COUNT / 8) 40 41 #define VBOX_MAX_SCREENS 32 42 43 #define GUEST_HEAP_OFFSET(vbox) ((vbox)->full_vram_size - \ 44 VBVA_ADAPTER_INFORMATION_SIZE) 45 #define GUEST_HEAP_SIZE VBVA_ADAPTER_INFORMATION_SIZE 46 #define GUEST_HEAP_USABLE_SIZE (VBVA_ADAPTER_INFORMATION_SIZE - \ 47 sizeof(struct hgsmi_host_flags)) 48 #define HOST_FLAGS_OFFSET GUEST_HEAP_USABLE_SIZE 49 50 struct vbox_private { 51 /* Must be first; or we must define our own release callback */ 52 struct drm_device ddev; 53 54 u8 __iomem *guest_heap; 55 u8 __iomem *vbva_buffers; 56 struct gen_pool *guest_pool; 57 struct vbva_buf_ctx *vbva_info; 58 bool any_pitch; 59 u32 num_crtcs; 60 /* Amount of available VRAM, including space used for buffers. */ 61 u32 full_vram_size; 62 /* Amount of available VRAM, not including space used for buffers. */ 63 u32 available_vram_size; 64 /* Array of structures for receiving mode hints. */ 65 struct vbva_modehint *last_mode_hints; 66 67 int fb_mtrr; 68 69 struct mutex hw_mutex; /* protects modeset and accel/vbva accesses */ 70 struct work_struct hotplug_work; 71 u32 input_mapping_width; 72 u32 input_mapping_height; 73 /* 74 * Is user-space using an X.Org-style layout of one large frame-buffer 75 * encompassing all screen ones or is the fbdev console active? 76 */ 77 bool single_framebuffer; 78 u8 cursor_data[CURSOR_DATA_SIZE]; 79 }; 80 81 #undef CURSOR_PIXEL_COUNT 82 #undef CURSOR_DATA_SIZE 83 84 struct vbox_connector { 85 struct drm_connector base; 86 char name[32]; 87 struct vbox_crtc *vbox_crtc; 88 struct { 89 u32 width; 90 u32 height; 91 bool disconnected; 92 } mode_hint; 93 }; 94 95 struct vbox_crtc { 96 struct drm_crtc base; 97 bool disconnected; 98 unsigned int crtc_id; 99 u32 fb_offset; 100 bool cursor_enabled; 101 u32 x_hint; 102 u32 y_hint; 103 /* 104 * When setting a mode we not only pass the mode to the hypervisor, 105 * but also information on how to map / translate input coordinates 106 * for the emulated USB tablet. This input-mapping may change when 107 * the mode on *another* crtc changes. 108 * 109 * This means that sometimes we must do a modeset on other crtc-s then 110 * the one being changed to update the input-mapping. Including crtc-s 111 * which may be disabled inside the guest (shown as a black window 112 * on the host unless closed by the user). 113 * 114 * With atomic modesetting the mode-info of disabled crtcs gets zeroed 115 * yet we need it when updating the input-map to avoid resizing the 116 * window as a side effect of a mode_set on another crtc. Therefor we 117 * cache the info of the last mode below. 118 */ 119 u32 width; 120 u32 height; 121 u32 x; 122 u32 y; 123 }; 124 125 struct vbox_encoder { 126 struct drm_encoder base; 127 }; 128 129 #define to_vbox_crtc(x) container_of(x, struct vbox_crtc, base) 130 #define to_vbox_connector(x) container_of(x, struct vbox_connector, base) 131 #define to_vbox_encoder(x) container_of(x, struct vbox_encoder, base) 132 133 bool vbox_check_supported(u16 id); 134 int vbox_hw_init(struct vbox_private *vbox); 135 void vbox_hw_fini(struct vbox_private *vbox); 136 137 int vbox_mode_init(struct vbox_private *vbox); 138 void vbox_mode_fini(struct vbox_private *vbox); 139 140 void vbox_report_caps(struct vbox_private *vbox); 141 142 int vbox_mm_init(struct vbox_private *vbox); 143 void vbox_mm_fini(struct vbox_private *vbox); 144 145 /* vbox_irq.c */ 146 int vbox_irq_init(struct vbox_private *vbox); 147 void vbox_irq_fini(struct vbox_private *vbox); 148 void vbox_report_hotplug(struct vbox_private *vbox); 149 irqreturn_t vbox_irq_handler(int irq, void *arg); 150 151 /* vbox_hgsmi.c */ 152 void *hgsmi_buffer_alloc(struct gen_pool *guest_pool, size_t size, 153 u8 channel, u16 channel_info); 154 void hgsmi_buffer_free(struct gen_pool *guest_pool, void *buf); 155 int hgsmi_buffer_submit(struct gen_pool *guest_pool, void *buf); 156 157 static inline void vbox_write_ioport(u16 index, u16 data) 158 { 159 outw(index, VBE_DISPI_IOPORT_INDEX); 160 outw(data, VBE_DISPI_IOPORT_DATA); 161 } 162 163 #endif 164
Indexes created Fri Sep 26 08:10:20 GMT 2025