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 48 struct 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 82 struct 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 93 struct 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 }; 122 123 struct 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) 131 132 bool vbox_check_supported(u16 id); 133 int vbox_hw_init(struct vbox_private *vbox); 134 void vbox_hw_fini(struct vbox_private *vbox); 135 136 int vbox_mode_init(struct vbox_private *vbox); 137 void vbox_mode_fini(struct vbox_private *vbox); 138 139 void vbox_report_caps(struct vbox_private *vbox); 140 141 int vbox_mm_init(struct vbox_private *vbox); 142 143 /* vbox_irq.c */ 144 int vbox_irq_init(struct vbox_private *vbox); 145 void vbox_irq_fini(struct vbox_private *vbox); 146 void vbox_report_hotplug(struct vbox_private *vbox); 147 148 /* vbox_hgsmi.c */ 149 void *hgsmi_buffer_alloc(struct gen_pool *guest_pool, size_t size, 150 u8 channel, u16 channel_info); 151 void hgsmi_buffer_free(struct gen_pool *guest_pool, void *buf); 152 int hgsmi_buffer_submit(struct gen_pool *guest_pool, void *buf); 153 154 static 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 161