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_fb_helper.h> 20 #include <drm/drm_gem.h> 21 #include <drm/drm_gem_vram_helper.h> 22 23 #include <drm/drm_vram_mm_helper.h> 24 25 #include "vboxvideo_guest.h" 26 #include "vboxvideo_vbe.h" 27 #include "hgsmi_ch_setup.h" 28 29 #define DRIVER_NAME "vboxvideo" 30 #define DRIVER_DESC "Oracle VM VirtualBox Graphics Card" 31 #define DRIVER_DATE "20130823" 32 33 #define DRIVER_MAJOR 1 34 #define DRIVER_MINOR 0 35 #define DRIVER_PATCHLEVEL 0 36 37 #define VBOX_MAX_CURSOR_WIDTH 64 38 #define VBOX_MAX_CURSOR_HEIGHT 64 39 #define CURSOR_PIXEL_COUNT (VBOX_MAX_CURSOR_WIDTH * VBOX_MAX_CURSOR_HEIGHT) 40 #define CURSOR_DATA_SIZE (CURSOR_PIXEL_COUNT * 4 + CURSOR_PIXEL_COUNT / 8) 41 42 #define VBOX_MAX_SCREENS 32 43 44 #define GUEST_HEAP_OFFSET(vbox) ((vbox)->full_vram_size - \ 45 VBVA_ADAPTER_INFORMATION_SIZE) 46 #define GUEST_HEAP_SIZE VBVA_ADAPTER_INFORMATION_SIZE 47 #define GUEST_HEAP_USABLE_SIZE (VBVA_ADAPTER_INFORMATION_SIZE - \ 48 sizeof(struct hgsmi_host_flags)) 49 #define HOST_FLAGS_OFFSET GUEST_HEAP_USABLE_SIZE 50 51 struct vbox_framebuffer { 52 struct drm_framebuffer base; 53 struct drm_gem_object *obj; 54 }; 55 56 struct vbox_private { 57 /* Must be first; or we must define our own release callback */ 58 struct drm_device ddev; 59 struct drm_fb_helper fb_helper; 60 struct vbox_framebuffer afb; 61 62 u8 __iomem *guest_heap; 63 u8 __iomem *vbva_buffers; 64 struct gen_pool *guest_pool; 65 struct vbva_buf_ctx *vbva_info; 66 bool any_pitch; 67 u32 num_crtcs; 68 /* Amount of available VRAM, including space used for buffers. */ 69 u32 full_vram_size; 70 /* Amount of available VRAM, not including space used for buffers. */ 71 u32 available_vram_size; 72 /* Array of structures for receiving mode hints. */ 73 struct vbva_modehint *last_mode_hints; 74 75 int fb_mtrr; 76 77 struct mutex hw_mutex; /* protects modeset and accel/vbva accesses */ 78 struct work_struct hotplug_work; 79 u32 input_mapping_width; 80 u32 input_mapping_height; 81 /* 82 * Is user-space using an X.Org-style layout of one large frame-buffer 83 * encompassing all screen ones or is the fbdev console active? 84 */ 85 bool single_framebuffer; 86 u8 cursor_data[CURSOR_DATA_SIZE]; 87 }; 88 89 #undef CURSOR_PIXEL_COUNT 90 #undef CURSOR_DATA_SIZE 91 92 struct vbox_connector { 93 struct drm_connector base; 94 char name[32]; 95 struct vbox_crtc *vbox_crtc; 96 struct { 97 u32 width; 98 u32 height; 99 bool disconnected; 100 } mode_hint; 101 }; 102 103 struct vbox_crtc { 104 struct drm_crtc base; 105 bool disconnected; 106 unsigned int crtc_id; 107 u32 fb_offset; 108 bool cursor_enabled; 109 u32 x_hint; 110 u32 y_hint; 111 /* 112 * When setting a mode we not only pass the mode to the hypervisor, 113 * but also information on how to map / translate input coordinates 114 * for the emulated USB tablet. This input-mapping may change when 115 * the mode on *another* crtc changes. 116 * 117 * This means that sometimes we must do a modeset on other crtc-s then 118 * the one being changed to update the input-mapping. Including crtc-s 119 * which may be disabled inside the guest (shown as a black window 120 * on the host unless closed by the user). 121 * 122 * With atomic modesetting the mode-info of disabled crtcs gets zeroed 123 * yet we need it when updating the input-map to avoid resizing the 124 * window as a side effect of a mode_set on another crtc. Therefor we 125 * cache the info of the last mode below. 126 */ 127 u32 width; 128 u32 height; 129 u32 x; 130 u32 y; 131 }; 132 133 struct vbox_encoder { 134 struct drm_encoder base; 135 }; 136 137 #define to_vbox_crtc(x) container_of(x, struct vbox_crtc, base) 138 #define to_vbox_connector(x) container_of(x, struct vbox_connector, base) 139 #define to_vbox_encoder(x) container_of(x, struct vbox_encoder, base) 140 #define to_vbox_framebuffer(x) container_of(x, struct vbox_framebuffer, base) 141 142 bool vbox_check_supported(u16 id); 143 int vbox_hw_init(struct vbox_private *vbox); 144 void vbox_hw_fini(struct vbox_private *vbox); 145 146 int vbox_mode_init(struct vbox_private *vbox); 147 void vbox_mode_fini(struct vbox_private *vbox); 148 149 void vbox_report_caps(struct vbox_private *vbox); 150 151 void vbox_framebuffer_dirty_rectangles(struct drm_framebuffer *fb, 152 struct drm_clip_rect *rects, 153 unsigned int num_rects); 154 155 int vbox_framebuffer_init(struct vbox_private *vbox, 156 struct vbox_framebuffer *vbox_fb, 157 const struct drm_mode_fb_cmd2 *mode_cmd, 158 struct drm_gem_object *obj); 159 160 int vboxfb_create(struct drm_fb_helper *helper, 161 struct drm_fb_helper_surface_size *sizes); 162 void vbox_fbdev_fini(struct vbox_private *vbox); 163 164 int vbox_mm_init(struct vbox_private *vbox); 165 void vbox_mm_fini(struct vbox_private *vbox); 166 167 int vbox_gem_create(struct vbox_private *vbox, 168 u32 size, bool iskernel, struct drm_gem_object **obj); 169 170 /* vbox_irq.c */ 171 int vbox_irq_init(struct vbox_private *vbox); 172 void vbox_irq_fini(struct vbox_private *vbox); 173 void vbox_report_hotplug(struct vbox_private *vbox); 174 irqreturn_t vbox_irq_handler(int irq, void *arg); 175 176 /* vbox_hgsmi.c */ 177 void *hgsmi_buffer_alloc(struct gen_pool *guest_pool, size_t size, 178 u8 channel, u16 channel_info); 179 void hgsmi_buffer_free(struct gen_pool *guest_pool, void *buf); 180 int hgsmi_buffer_submit(struct gen_pool *guest_pool, void *buf); 181 182 static inline void vbox_write_ioport(u16 index, u16 data) 183 { 184 outw(index, VBE_DISPI_IOPORT_INDEX); 185 outw(data, VBE_DISPI_IOPORT_DATA); 186 } 187 188 #endif 189