diff options
Diffstat (limited to 'drivers/gpu/drm/qxl/qxl_image.c')
-rw-r--r-- | drivers/gpu/drm/qxl/qxl_image.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/drivers/gpu/drm/qxl/qxl_image.c b/drivers/gpu/drm/qxl/qxl_image.c new file mode 100644 index 000000000000..cf856206996b --- /dev/null +++ b/drivers/gpu/drm/qxl/qxl_image.c | |||
@@ -0,0 +1,176 @@ | |||
1 | /* | ||
2 | * Copyright 2013 Red Hat Inc. | ||
3 | * | ||
4 | * Permission is hereby granted, free of charge, to any person obtaining a | ||
5 | * copy of this software and associated documentation files (the "Software"), | ||
6 | * to deal in the Software without restriction, including without limitation | ||
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | ||
8 | * and/or sell copies of the Software, and to permit persons to whom the | ||
9 | * Software is furnished to do so, subject to the following conditions: | ||
10 | * | ||
11 | * The above copyright notice and this permission notice shall be included in | ||
12 | * all copies or substantial portions of the Software. | ||
13 | * | ||
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | ||
17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | ||
18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | ||
19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | ||
20 | * OTHER DEALINGS IN THE SOFTWARE. | ||
21 | * | ||
22 | * Authors: Dave Airlie | ||
23 | * Alon Levy | ||
24 | */ | ||
25 | |||
26 | #include <linux/gfp.h> | ||
27 | #include <linux/slab.h> | ||
28 | |||
29 | #include "qxl_drv.h" | ||
30 | #include "qxl_object.h" | ||
31 | |||
32 | static int | ||
33 | qxl_image_create_helper(struct qxl_device *qdev, | ||
34 | struct qxl_release *release, | ||
35 | struct qxl_bo **image_bo, | ||
36 | const uint8_t *data, | ||
37 | int width, int height, | ||
38 | int depth, unsigned int hash, | ||
39 | int stride) | ||
40 | { | ||
41 | struct qxl_image *image; | ||
42 | struct qxl_data_chunk *chunk; | ||
43 | int i; | ||
44 | int chunk_stride; | ||
45 | int linesize = width * depth / 8; | ||
46 | struct qxl_bo *chunk_bo; | ||
47 | int ret; | ||
48 | void *ptr; | ||
49 | /* Chunk */ | ||
50 | /* FIXME: Check integer overflow */ | ||
51 | /* TODO: variable number of chunks */ | ||
52 | chunk_stride = stride; /* TODO: should use linesize, but it renders | ||
53 | wrong (check the bitmaps are sent correctly | ||
54 | first) */ | ||
55 | ret = qxl_alloc_bo_reserved(qdev, sizeof(*chunk) + height * chunk_stride, | ||
56 | &chunk_bo); | ||
57 | |||
58 | ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, 0); | ||
59 | chunk = ptr; | ||
60 | chunk->data_size = height * chunk_stride; | ||
61 | chunk->prev_chunk = 0; | ||
62 | chunk->next_chunk = 0; | ||
63 | qxl_bo_kunmap_atomic_page(qdev, chunk_bo, ptr); | ||
64 | |||
65 | { | ||
66 | void *k_data, *i_data; | ||
67 | int remain; | ||
68 | int page; | ||
69 | int size; | ||
70 | if (stride == linesize && chunk_stride == stride) { | ||
71 | remain = linesize * height; | ||
72 | page = 0; | ||
73 | i_data = (void *)data; | ||
74 | |||
75 | while (remain > 0) { | ||
76 | ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, page << PAGE_SHIFT); | ||
77 | |||
78 | if (page == 0) { | ||
79 | chunk = ptr; | ||
80 | k_data = chunk->data; | ||
81 | size = PAGE_SIZE - offsetof(struct qxl_data_chunk, data); | ||
82 | } else { | ||
83 | k_data = ptr; | ||
84 | size = PAGE_SIZE; | ||
85 | } | ||
86 | size = min(size, remain); | ||
87 | |||
88 | memcpy(k_data, i_data, size); | ||
89 | |||
90 | qxl_bo_kunmap_atomic_page(qdev, chunk_bo, ptr); | ||
91 | i_data += size; | ||
92 | remain -= size; | ||
93 | page++; | ||
94 | } | ||
95 | } else { | ||
96 | unsigned page_base, page_offset, out_offset; | ||
97 | for (i = 0 ; i < height ; ++i) { | ||
98 | i_data = (void *)data + i * stride; | ||
99 | remain = linesize; | ||
100 | out_offset = offsetof(struct qxl_data_chunk, data) + i * chunk_stride; | ||
101 | |||
102 | while (remain > 0) { | ||
103 | page_base = out_offset & PAGE_MASK; | ||
104 | page_offset = offset_in_page(out_offset); | ||
105 | |||
106 | size = min((int)(PAGE_SIZE - page_offset), remain); | ||
107 | |||
108 | ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, page_base); | ||
109 | k_data = ptr + page_offset; | ||
110 | memcpy(k_data, i_data, size); | ||
111 | qxl_bo_kunmap_atomic_page(qdev, chunk_bo, ptr); | ||
112 | remain -= size; | ||
113 | i_data += size; | ||
114 | out_offset += size; | ||
115 | } | ||
116 | } | ||
117 | } | ||
118 | } | ||
119 | |||
120 | |||
121 | qxl_bo_kunmap(chunk_bo); | ||
122 | |||
123 | /* Image */ | ||
124 | ret = qxl_alloc_bo_reserved(qdev, sizeof(*image), image_bo); | ||
125 | |||
126 | ptr = qxl_bo_kmap_atomic_page(qdev, *image_bo, 0); | ||
127 | image = ptr; | ||
128 | |||
129 | image->descriptor.id = 0; | ||
130 | image->descriptor.type = SPICE_IMAGE_TYPE_BITMAP; | ||
131 | |||
132 | image->descriptor.flags = 0; | ||
133 | image->descriptor.width = width; | ||
134 | image->descriptor.height = height; | ||
135 | |||
136 | switch (depth) { | ||
137 | case 1: | ||
138 | /* TODO: BE? check by arch? */ | ||
139 | image->u.bitmap.format = SPICE_BITMAP_FMT_1BIT_BE; | ||
140 | break; | ||
141 | case 24: | ||
142 | image->u.bitmap.format = SPICE_BITMAP_FMT_24BIT; | ||
143 | break; | ||
144 | case 32: | ||
145 | image->u.bitmap.format = SPICE_BITMAP_FMT_32BIT; | ||
146 | break; | ||
147 | default: | ||
148 | DRM_ERROR("unsupported image bit depth\n"); | ||
149 | return -EINVAL; /* TODO: cleanup */ | ||
150 | } | ||
151 | image->u.bitmap.flags = QXL_BITMAP_TOP_DOWN; | ||
152 | image->u.bitmap.x = width; | ||
153 | image->u.bitmap.y = height; | ||
154 | image->u.bitmap.stride = chunk_stride; | ||
155 | image->u.bitmap.palette = 0; | ||
156 | image->u.bitmap.data = qxl_bo_physical_address(qdev, chunk_bo, 0); | ||
157 | qxl_release_add_res(qdev, release, chunk_bo); | ||
158 | qxl_bo_unreserve(chunk_bo); | ||
159 | qxl_bo_unref(&chunk_bo); | ||
160 | |||
161 | qxl_bo_kunmap_atomic_page(qdev, *image_bo, ptr); | ||
162 | |||
163 | return 0; | ||
164 | } | ||
165 | |||
166 | int qxl_image_create(struct qxl_device *qdev, | ||
167 | struct qxl_release *release, | ||
168 | struct qxl_bo **image_bo, | ||
169 | const uint8_t *data, | ||
170 | int x, int y, int width, int height, | ||
171 | int depth, int stride) | ||
172 | { | ||
173 | data += y * stride + x * (depth / 8); | ||
174 | return qxl_image_create_helper(qdev, release, image_bo, data, | ||
175 | width, height, depth, 0, stride); | ||
176 | } | ||