1 /* $NetBSD: qxl_image.c,v 1.3 2021/12/18 23:45:42 riastradh Exp $ */ 2 3 /* 4 * Copyright 2013 Red Hat Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: Dave Airlie 25 * Alon Levy 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: qxl_image.c,v 1.3 2021/12/18 23:45:42 riastradh Exp $"); 30 31 #include <linux/gfp.h> 32 #include <linux/slab.h> 33 34 #include "qxl_drv.h" 35 #include "qxl_object.h" 36 37 static int 38 qxl_allocate_chunk(struct qxl_device *qdev, 39 struct qxl_release *release, 40 struct qxl_drm_image *image, 41 unsigned int chunk_size) 42 { 43 struct qxl_drm_chunk *chunk; 44 int ret; 45 46 chunk = kmalloc(sizeof(struct qxl_drm_chunk), GFP_KERNEL); 47 if (!chunk) 48 return -ENOMEM; 49 50 ret = qxl_alloc_bo_reserved(qdev, release, chunk_size, &chunk->bo); 51 if (ret) { 52 kfree(chunk); 53 return ret; 54 } 55 56 list_add_tail(&chunk->head, &image->chunk_list); 57 return 0; 58 } 59 60 int 61 qxl_image_alloc_objects(struct qxl_device *qdev, 62 struct qxl_release *release, 63 struct qxl_drm_image **image_ptr, 64 int height, int stride) 65 { 66 struct qxl_drm_image *image; 67 int ret; 68 69 image = kmalloc(sizeof(struct qxl_drm_image), GFP_KERNEL); 70 if (!image) 71 return -ENOMEM; 72 73 INIT_LIST_HEAD(&image->chunk_list); 74 75 ret = qxl_alloc_bo_reserved(qdev, release, sizeof(struct qxl_image), &image->bo); 76 if (ret) { 77 kfree(image); 78 return ret; 79 } 80 81 ret = qxl_allocate_chunk(qdev, release, image, sizeof(struct qxl_data_chunk) + stride * height); 82 if (ret) { 83 qxl_bo_unref(&image->bo); 84 kfree(image); 85 return ret; 86 } 87 *image_ptr = image; 88 return 0; 89 } 90 91 void qxl_image_free_objects(struct qxl_device *qdev, struct qxl_drm_image *dimage) 92 { 93 struct qxl_drm_chunk *chunk, *tmp; 94 95 list_for_each_entry_safe(chunk, tmp, &dimage->chunk_list, head) { 96 qxl_bo_unref(&chunk->bo); 97 kfree(chunk); 98 } 99 100 qxl_bo_unref(&dimage->bo); 101 kfree(dimage); 102 } 103 104 static int 105 qxl_image_init_helper(struct qxl_device *qdev, 106 struct qxl_release *release, 107 struct qxl_drm_image *dimage, 108 const uint8_t *data, 109 int width, int height, 110 int depth, unsigned int hash, 111 int stride) 112 { 113 struct qxl_drm_chunk *drv_chunk; 114 struct qxl_image *image; 115 struct qxl_data_chunk *chunk; 116 int i; 117 int chunk_stride; 118 int linesize = width * depth / 8; 119 struct qxl_bo *chunk_bo, *image_bo; 120 void *ptr; 121 /* Chunk */ 122 /* FIXME: Check integer overflow */ 123 /* TODO: variable number of chunks */ 124 125 drv_chunk = list_first_entry(&dimage->chunk_list, struct qxl_drm_chunk, head); 126 127 chunk_bo = drv_chunk->bo; 128 chunk_stride = stride; /* TODO: should use linesize, but it renders 129 wrong (check the bitmaps are sent correctly 130 first) */ 131 132 ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, 0); 133 chunk = ptr; 134 chunk->data_size = height * chunk_stride; 135 chunk->prev_chunk = 0; 136 chunk->next_chunk = 0; 137 qxl_bo_kunmap_atomic_page(qdev, chunk_bo, ptr); 138 139 { 140 void *k_data, *i_data; 141 int remain; 142 int page; 143 int size; 144 145 if (stride == linesize && chunk_stride == stride) { 146 remain = linesize * height; 147 page = 0; 148 i_data = (void *)data; 149 150 while (remain > 0) { 151 ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, page << PAGE_SHIFT); 152 153 if (page == 0) { 154 chunk = ptr; 155 k_data = chunk->data; 156 size = PAGE_SIZE - offsetof(struct qxl_data_chunk, data); 157 } else { 158 k_data = ptr; 159 size = PAGE_SIZE; 160 } 161 size = min(size, remain); 162 163 memcpy(k_data, i_data, size); 164 165 qxl_bo_kunmap_atomic_page(qdev, chunk_bo, ptr); 166 i_data += size; 167 remain -= size; 168 page++; 169 } 170 } else { 171 unsigned int page_base, page_offset, out_offset; 172 173 for (i = 0 ; i < height ; ++i) { 174 i_data = (void *)data + i * stride; 175 remain = linesize; 176 out_offset = offsetof(struct qxl_data_chunk, data) + i * chunk_stride; 177 178 while (remain > 0) { 179 page_base = out_offset & PAGE_MASK; 180 page_offset = offset_in_page(out_offset); 181 size = min((int)(PAGE_SIZE - page_offset), remain); 182 183 ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, page_base); 184 k_data = ptr + page_offset; 185 memcpy(k_data, i_data, size); 186 qxl_bo_kunmap_atomic_page(qdev, chunk_bo, ptr); 187 remain -= size; 188 i_data += size; 189 out_offset += size; 190 } 191 } 192 } 193 } 194 qxl_bo_kunmap(chunk_bo); 195 196 image_bo = dimage->bo; 197 ptr = qxl_bo_kmap_atomic_page(qdev, image_bo, 0); 198 image = ptr; 199 200 image->descriptor.id = 0; 201 image->descriptor.type = SPICE_IMAGE_TYPE_BITMAP; 202 203 image->descriptor.flags = 0; 204 image->descriptor.width = width; 205 image->descriptor.height = height; 206 207 switch (depth) { 208 case 1: 209 /* TODO: BE? check by arch? */ 210 image->u.bitmap.format = SPICE_BITMAP_FMT_1BIT_BE; 211 break; 212 case 24: 213 image->u.bitmap.format = SPICE_BITMAP_FMT_24BIT; 214 break; 215 case 32: 216 image->u.bitmap.format = SPICE_BITMAP_FMT_32BIT; 217 break; 218 default: 219 DRM_ERROR("unsupported image bit depth\n"); 220 return -EINVAL; /* TODO: cleanup */ 221 } 222 image->u.bitmap.flags = QXL_BITMAP_TOP_DOWN; 223 image->u.bitmap.x = width; 224 image->u.bitmap.y = height; 225 image->u.bitmap.stride = chunk_stride; 226 image->u.bitmap.palette = 0; 227 image->u.bitmap.data = qxl_bo_physical_address(qdev, chunk_bo, 0); 228 229 qxl_bo_kunmap_atomic_page(qdev, image_bo, ptr); 230 231 return 0; 232 } 233 234 int qxl_image_init(struct qxl_device *qdev, 235 struct qxl_release *release, 236 struct qxl_drm_image *dimage, 237 const uint8_t *data, 238 int x, int y, int width, int height, 239 int depth, int stride) 240 { 241 data += y * stride + x * (depth / 8); 242 return qxl_image_init_helper(qdev, release, dimage, data, 243 width, height, depth, 0, stride); 244 } 245
Indexes created Sat Sep 20 22:09:52 GMT 2025