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_allocate_chunk(struct qxl_device *qdev, 34 struct qxl_release *release, 35 struct qxl_drm_image *image, 36 unsigned int chunk_size) 37 { 38 struct qxl_drm_chunk *chunk; 39 int ret; 40 41 chunk = kmalloc(sizeof(struct qxl_drm_chunk), GFP_KERNEL); 42 if (!chunk) 43 return -ENOMEM; 44 45 ret = qxl_alloc_bo_reserved(qdev, release, chunk_size, &chunk->bo); 46 if (ret) { 47 kfree(chunk); 48 return ret; 49 } 50 51 list_add_tail(&chunk->head, &image->chunk_list); 52 return 0; 53 } 54 55 int 56 qxl_image_alloc_objects(struct qxl_device *qdev, 57 struct qxl_release *release, 58 struct qxl_drm_image **image_ptr, 59 int height, int stride) 60 { 61 struct qxl_drm_image *image; 62 int ret; 63 64 image = kmalloc(sizeof(struct qxl_drm_image), GFP_KERNEL); 65 if (!image) 66 return -ENOMEM; 67 68 INIT_LIST_HEAD(&image->chunk_list); 69 70 ret = qxl_alloc_bo_reserved(qdev, release, sizeof(struct qxl_image), &image->bo); 71 if (ret) { 72 kfree(image); 73 return ret; 74 } 75 76 ret = qxl_allocate_chunk(qdev, release, image, sizeof(struct qxl_data_chunk) + stride * height); 77 if (ret) { 78 qxl_bo_unref(&image->bo); 79 kfree(image); 80 return ret; 81 } 82 *image_ptr = image; 83 return 0; 84 } 85 86 void qxl_image_free_objects(struct qxl_device *qdev, struct qxl_drm_image *dimage) 87 { 88 struct qxl_drm_chunk *chunk, *tmp; 89 90 list_for_each_entry_safe(chunk, tmp, &dimage->chunk_list, head) { 91 qxl_bo_unref(&chunk->bo); 92 kfree(chunk); 93 } 94 95 qxl_bo_unref(&dimage->bo); 96 kfree(dimage); 97 } 98 99 static int 100 qxl_image_init_helper(struct qxl_device *qdev, 101 struct qxl_release *release, 102 struct qxl_drm_image *dimage, 103 const uint8_t *data, 104 int width, int height, 105 int depth, unsigned int hash, 106 int stride) 107 { 108 struct qxl_drm_chunk *drv_chunk; 109 struct qxl_image *image; 110 struct qxl_data_chunk *chunk; 111 int i; 112 int chunk_stride; 113 int linesize = width * depth / 8; 114 struct qxl_bo *chunk_bo, *image_bo; 115 void *ptr; 116 /* Chunk */ 117 /* FIXME: Check integer overflow */ 118 /* TODO: variable number of chunks */ 119 120 drv_chunk = list_first_entry(&dimage->chunk_list, struct qxl_drm_chunk, head); 121 122 chunk_bo = drv_chunk->bo; 123 chunk_stride = stride; /* TODO: should use linesize, but it renders 124 wrong (check the bitmaps are sent correctly 125 first) */ 126 127 ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, 0); 128 chunk = ptr; 129 chunk->data_size = height * chunk_stride; 130 chunk->prev_chunk = 0; 131 chunk->next_chunk = 0; 132 qxl_bo_kunmap_atomic_page(qdev, chunk_bo, ptr); 133 134 { 135 void *k_data, *i_data; 136 int remain; 137 int page; 138 int size; 139 140 if (stride == linesize && chunk_stride == stride) { 141 remain = linesize * height; 142 page = 0; 143 i_data = (void *)data; 144 145 while (remain > 0) { 146 ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, page << PAGE_SHIFT); 147 148 if (page == 0) { 149 chunk = ptr; 150 k_data = chunk->data; 151 size = PAGE_SIZE - offsetof(struct qxl_data_chunk, data); 152 } else { 153 k_data = ptr; 154 size = PAGE_SIZE; 155 } 156 size = min(size, remain); 157 158 memcpy(k_data, i_data, size); 159 160 qxl_bo_kunmap_atomic_page(qdev, chunk_bo, ptr); 161 i_data += size; 162 remain -= size; 163 page++; 164 } 165 } else { 166 unsigned int page_base, page_offset, out_offset; 167 168 for (i = 0 ; i < height ; ++i) { 169 i_data = (void *)data + i * stride; 170 remain = linesize; 171 out_offset = offsetof(struct qxl_data_chunk, data) + i * chunk_stride; 172 173 while (remain > 0) { 174 page_base = out_offset & PAGE_MASK; 175 page_offset = offset_in_page(out_offset); 176 size = min((int)(PAGE_SIZE - page_offset), remain); 177 178 ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, page_base); 179 k_data = ptr + page_offset; 180 memcpy(k_data, i_data, size); 181 qxl_bo_kunmap_atomic_page(qdev, chunk_bo, ptr); 182 remain -= size; 183 i_data += size; 184 out_offset += size; 185 } 186 } 187 } 188 } 189 qxl_bo_kunmap(chunk_bo); 190 191 image_bo = dimage->bo; 192 ptr = qxl_bo_kmap_atomic_page(qdev, image_bo, 0); 193 image = ptr; 194 195 image->descriptor.id = 0; 196 image->descriptor.type = SPICE_IMAGE_TYPE_BITMAP; 197 198 image->descriptor.flags = 0; 199 image->descriptor.width = width; 200 image->descriptor.height = height; 201 202 switch (depth) { 203 case 1: 204 /* TODO: BE? check by arch? */ 205 image->u.bitmap.format = SPICE_BITMAP_FMT_1BIT_BE; 206 break; 207 case 24: 208 image->u.bitmap.format = SPICE_BITMAP_FMT_24BIT; 209 break; 210 case 32: 211 image->u.bitmap.format = SPICE_BITMAP_FMT_32BIT; 212 break; 213 default: 214 DRM_ERROR("unsupported image bit depth\n"); 215 qxl_bo_kunmap_atomic_page(qdev, image_bo, ptr); 216 return -EINVAL; 217 } 218 image->u.bitmap.flags = QXL_BITMAP_TOP_DOWN; 219 image->u.bitmap.x = width; 220 image->u.bitmap.y = height; 221 image->u.bitmap.stride = chunk_stride; 222 image->u.bitmap.palette = 0; 223 image->u.bitmap.data = qxl_bo_physical_address(qdev, chunk_bo, 0); 224 225 qxl_bo_kunmap_atomic_page(qdev, image_bo, ptr); 226 227 return 0; 228 } 229 230 int qxl_image_init(struct qxl_device *qdev, 231 struct qxl_release *release, 232 struct qxl_drm_image *dimage, 233 const uint8_t *data, 234 int x, int y, int width, int height, 235 int depth, int stride) 236 { 237 data += y * stride + x * (depth / 8); 238 return qxl_image_init_helper(qdev, release, dimage, data, 239 width, height, depth, 0, stride); 240 } 241