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 47 struct 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 81 struct 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 92 struct 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 }; 121 122 struct 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) 130 131 bool vbox_check_supported(u16 id); 132 int vbox_hw_init(struct vbox_private *vbox); 133 void vbox_hw_fini(struct vbox_private *vbox); 134 135 int vbox_mode_init(struct vbox_private *vbox); 136 void vbox_mode_fini(struct vbox_private *vbox); 137 138 void vbox_report_caps(struct vbox_private *vbox); 139 140 int vbox_mm_init(struct vbox_private *vbox); 141 142 /* vbox_irq.c */ 143 int vbox_irq_init(struct vbox_private *vbox); 144 void vbox_irq_fini(struct vbox_private *vbox); 145 void vbox_report_hotplug(struct vbox_private *vbox); 146 147 /* vbox_hgsmi.c */ 148 void *hgsmi_buffer_alloc(struct gen_pool *guest_pool, size_t size, 149 u8 channel, u16 channel_info); 150 void hgsmi_buffer_free(struct gen_pool *guest_pool, void *buf); 151 int hgsmi_buffer_submit(struct gen_pool *guest_pool, void *buf); 152 153 static 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 160