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
|
// SPDX-License-Identifier: MIT
/*
* Copyright (C) 2013-2017 Oracle Corporation
* This file is based on ast_fb.c
* Copyright 2012 Red Hat Inc.
* Authors: Dave Airlie <airlied@redhat.com>
* Michael Thayer <michael.thayer@oracle.com,
*/
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/string.h>
#include <linux/sysrq.h>
#include <linux/tty.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_fourcc.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,
DRM_FB_HELPER_DEFAULT_OPS,
.fb_fillrect = drm_fb_helper_sys_fillrect,
.fb_copyarea = drm_fb_helper_sys_copyarea,
.fb_imageblit = drm_fb_helper_sys_imageblit,
};
int vboxfb_create(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
struct vbox_private *vbox =
container_of(helper, struct vbox_private, fb_helper);
struct pci_dev *pdev = vbox->ddev.pdev;
struct drm_mode_fb_cmd2 mode_cmd;
struct drm_framebuffer *fb;
struct fb_info *info;
struct drm_gem_object *gobj;
struct vbox_bo *bo;
int size, ret;
u64 gpu_addr;
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 = vbox_gem_create(vbox, size, true, &gobj);
if (ret) {
DRM_ERROR("failed to create fbcon backing object %d\n", ret);
return ret;
}
ret = vbox_framebuffer_init(vbox, &vbox->afb, &mode_cmd, gobj);
if (ret)
return ret;
bo = gem_to_vbox_bo(gobj);
ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM);
if (ret)
return ret;
info = drm_fb_helper_alloc_fbi(helper);
if (IS_ERR(info))
return PTR_ERR(info);
info->screen_size = size;
info->screen_base = (char __iomem *)vbox_bo_kmap(bo);
if (IS_ERR(info->screen_base))
return PTR_ERR(info->screen_base);
fb = &vbox->afb.base;
helper->fb = fb;
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(pdev, 0);
info->apertures->ranges[0].size = pci_resource_len(pdev, 0);
drm_fb_helper_fill_info(info, helper, sizes);
gpu_addr = vbox_bo_gpu_offset(bo);
info->fix.smem_start = info->apertures->ranges[0].base + gpu_addr;
info->fix.smem_len = vbox->available_vram_size - gpu_addr;
#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;
}
void vbox_fbdev_fini(struct vbox_private *vbox)
{
struct vbox_framebuffer *afb = &vbox->afb;
#ifdef CONFIG_DRM_KMS_FB_HELPER
if (vbox->fb_helper.fbdev && vbox->fb_helper.fbdev->fbdefio)
fb_deferred_io_cleanup(vbox->fb_helper.fbdev);
#endif
drm_fb_helper_unregister_fbi(&vbox->fb_helper);
if (afb->obj) {
struct vbox_bo *bo = gem_to_vbox_bo(afb->obj);
vbox_bo_kunmap(bo);
if (bo->pin_count)
vbox_bo_unpin(bo);
drm_gem_object_put_unlocked(afb->obj);
afb->obj = NULL;
}
drm_fb_helper_fini(&vbox->fb_helper);
drm_framebuffer_unregister_private(&afb->base);
drm_framebuffer_cleanup(&afb->base);
}
|
