Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 | /*
* Copyright (C) 2013-2017 Oracle Corporation
* This file is based on ast_fb.c
* Copyright 2012 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* Authors: Dave Airlie <airlied@redhat.com>
* Michael Thayer <michael.thayer@oracle.com,
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/sysrq.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_crtc_helper.h>
#include "vbox_drv.h"
#include "vboxvideo.h"
#ifdef CONFIG_DRM_KMS_FB_HELPER
static struct fb_deferred_io vbox_defio = {
.delay = HZ / 30,
.deferred_io = drm_fb_helper_deferred_io,
};
#endif
static struct fb_ops vboxfb_ops = {
.owner = THIS_MODULE,
.fb_check_var = drm_fb_helper_check_var,
.fb_set_par = drm_fb_helper_set_par,
.fb_fillrect = drm_fb_helper_sys_fillrect,
.fb_copyarea = drm_fb_helper_sys_copyarea,
.fb_imageblit = drm_fb_helper_sys_imageblit,
.fb_pan_display = drm_fb_helper_pan_display,
.fb_blank = drm_fb_helper_blank,
.fb_setcmap = drm_fb_helper_setcmap,
.fb_debug_enter = drm_fb_helper_debug_enter,
.fb_debug_leave = drm_fb_helper_debug_leave,
};
static int vboxfb_create_object(struct vbox_fbdev *fbdev,
struct DRM_MODE_FB_CMD *mode_cmd,
struct drm_gem_object **gobj_p)
{
struct drm_device *dev = fbdev->helper.dev;
u32 size;
struct drm_gem_object *gobj;
u32 pitch = mode_cmd->pitches[0];
int ret;
size = pitch * mode_cmd->height;
ret = vbox_gem_create(dev, size, true, &gobj);
if (ret)
return ret;
*gobj_p = gobj;
return 0;
}
static int vboxfb_create(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
struct vbox_fbdev *fbdev =
container_of(helper, struct vbox_fbdev, helper);
struct drm_device *dev = fbdev->helper.dev;
struct DRM_MODE_FB_CMD mode_cmd;
struct drm_framebuffer *fb;
struct fb_info *info;
struct drm_gem_object *gobj;
struct vbox_bo *bo;
int size, ret;
u32 pitch;
mode_cmd.width = sizes->surface_width;
mode_cmd.height = sizes->surface_height;
pitch = mode_cmd.width * ((sizes->surface_bpp + 7) / 8);
mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
sizes->surface_depth);
mode_cmd.pitches[0] = pitch;
size = pitch * mode_cmd.height;
ret = vboxfb_create_object(fbdev, &mode_cmd, &gobj);
if (ret) {
DRM_ERROR("failed to create fbcon backing object %d\n", ret);
return ret;
}
ret = vbox_framebuffer_init(dev, &fbdev->afb, &mode_cmd, gobj);
if (ret)
return ret;
bo = gem_to_vbox_bo(gobj);
ret = vbox_bo_reserve(bo, false);
if (ret)
return ret;
ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, NULL);
if (ret) {
vbox_bo_unreserve(bo);
return ret;
}
ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
vbox_bo_unreserve(bo);
if (ret) {
DRM_ERROR("failed to kmap fbcon\n");
return ret;
}
info = drm_fb_helper_alloc_fbi(helper);
if (IS_ERR(info))
return -PTR_ERR(info);
info->par = fbdev;
fbdev->size = size;
fb = &fbdev->afb.base;
fbdev->helper.fb = fb;
strcpy(info->fix.id, "vboxdrmfb");
/*
* The last flag forces a mode set on VT switches even if the kernel
* does not think it is needed.
*/
info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT |
FBINFO_MISC_ALWAYS_SETPAR;
info->fbops = &vboxfb_ops;
/*
* This seems to be done for safety checking that the framebuffer
* is not registered twice by different drivers.
*/
info->apertures->ranges[0].base = pci_resource_start(dev->pdev, 0);
info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 0);
drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth);
drm_fb_helper_fill_var(info, &fbdev->helper, sizes->fb_width,
sizes->fb_height);
info->screen_base = bo->kmap.virtual;
info->screen_size = size;
#ifdef CONFIG_DRM_KMS_FB_HELPER
info->fbdefio = &vbox_defio;
fb_deferred_io_init(info);
#endif
info->pixmap.flags = FB_PIXMAP_SYSTEM;
DRM_DEBUG_KMS("allocated %dx%d\n", fb->width, fb->height);
return 0;
}
static struct drm_fb_helper_funcs vbox_fb_helper_funcs = {
.fb_probe = vboxfb_create,
};
void vbox_fbdev_fini(struct drm_device *dev)
{
struct vbox_private *vbox = dev->dev_private;
struct vbox_fbdev *fbdev = vbox->fbdev;
struct vbox_framebuffer *afb = &fbdev->afb;
#ifdef CONFIG_DRM_KMS_FB_HELPER
if (fbdev->helper.fbdev && fbdev->helper.fbdev->fbdefio)
fb_deferred_io_cleanup(fbdev->helper.fbdev);
#endif
drm_fb_helper_unregister_fbi(&fbdev->helper);
if (afb->obj) {
struct vbox_bo *bo = gem_to_vbox_bo(afb->obj);
if (!vbox_bo_reserve(bo, false)) {
if (bo->kmap.virtual)
ttm_bo_kunmap(&bo->kmap);
/*
* QXL does this, but is it really needed before
* freeing?
*/
if (bo->pin_count)
vbox_bo_unpin(bo);
vbox_bo_unreserve(bo);
}
drm_gem_object_put_unlocked(afb->obj);
afb->obj = NULL;
}
drm_fb_helper_fini(&fbdev->helper);
drm_framebuffer_unregister_private(&afb->base);
drm_framebuffer_cleanup(&afb->base);
}
int vbox_fbdev_init(struct drm_device *dev)
{
struct vbox_private *vbox = dev->dev_private;
struct vbox_fbdev *fbdev;
int ret;
fbdev = devm_kzalloc(dev->dev, sizeof(*fbdev), GFP_KERNEL);
if (!fbdev)
return -ENOMEM;
vbox->fbdev = fbdev;
spin_lock_init(&fbdev->dirty_lock);
drm_fb_helper_prepare(dev, &fbdev->helper, &vbox_fb_helper_funcs);
ret = drm_fb_helper_init(dev, &fbdev->helper, vbox->num_crtcs);
if (ret)
return ret;
ret = drm_fb_helper_single_add_all_connectors(&fbdev->helper);
if (ret)
goto err_fini;
/* disable all the possible outputs/crtcs before entering KMS mode */
drm_helper_disable_unused_functions(dev);
ret = drm_fb_helper_initial_config(&fbdev->helper, 32);
if (ret)
goto err_fini;
return 0;
err_fini:
drm_fb_helper_fini(&fbdev->helper);
return ret;
}
void vbox_fbdev_set_base(struct vbox_private *vbox, unsigned long gpu_addr)
{
struct fb_info *fbdev = vbox->fbdev->helper.fbdev;
fbdev->fix.smem_start = fbdev->apertures->ranges[0].base + gpu_addr;
fbdev->fix.smem_len = vbox->available_vram_size - gpu_addr;
}
|