root/drivers/gpu/drm/vboxvideo/vbox_drv.h

INCLUDED FROM

DEFINITIONS

1. vbox_write_ioport

   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