| 1 | /* |
| 2 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 3 | * |
| 4 | * QemuDmaBuf struct and helpers used for accessing its data |
| 5 | * |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 7 | * See the COPYING file in the top-level directory. |
| 8 | */ |
| 9 | |
| 10 | #include "qemu/osdep.h" |
| 11 | #include "ui/dmabuf.h" |
| 12 | |
| 13 | struct QemuDmaBuf { |
| 14 | int fd[DMABUF_MAX_PLANES]; |
| 15 | uint32_t width; |
| 16 | uint32_t height; |
| 17 | uint32_t offset[DMABUF_MAX_PLANES]; |
| 18 | uint32_t stride[DMABUF_MAX_PLANES]; |
| 19 | uint32_t num_planes; |
| 20 | uint32_t fourcc; |
| 21 | uint64_t modifier; |
| 22 | uint32_t texture; |
| 23 | uint32_t x; |
| 24 | uint32_t y; |
| 25 | uint32_t backing_width; |
| 26 | uint32_t backing_height; |
| 27 | bool y0_top; |
| 28 | void *sync; |
| 29 | int fence_fd; |
| 30 | bool allow_fences; |
| 31 | bool draw_submitted; |
| 32 | }; |
| 33 | |
| 34 | QemuDmaBuf *qemu_dmabuf_new(uint32_t width, uint32_t height, |
| 35 | const uint32_t *offset, const uint32_t *stride, |
| 36 | uint32_t x, uint32_t y, |
| 37 | uint32_t backing_width, uint32_t backing_height, |
| 38 | uint32_t fourcc, uint64_t modifier, |
| 39 | const int32_t *dmabuf_fd, uint32_t num_planes, |
| 40 | bool allow_fences, bool y0_top) { |
| 41 | QemuDmaBuf *dmabuf; |
| 42 | |
| 43 | assert(num_planes > 0 && num_planes <= DMABUF_MAX_PLANES); |
| 44 | |
| 45 | dmabuf = g_new0(QemuDmaBuf, 1); |
| 46 | |
| 47 | dmabuf->width = width; |
| 48 | dmabuf->height = height; |
| 49 | memcpy(dmabuf->offset, offset, num_planes * sizeof(*offset)); |
| 50 | memcpy(dmabuf->stride, stride, num_planes * sizeof(*stride)); |
| 51 | dmabuf->x = x; |
| 52 | dmabuf->y = y; |
| 53 | dmabuf->backing_width = backing_width; |
| 54 | dmabuf->backing_height = backing_height; |
| 55 | dmabuf->fourcc = fourcc; |
| 56 | dmabuf->modifier = modifier; |
| 57 | memcpy(dmabuf->fd, dmabuf_fd, num_planes * sizeof(*dmabuf_fd)); |
| 58 | dmabuf->allow_fences = allow_fences; |
| 59 | dmabuf->y0_top = y0_top; |
| 60 | dmabuf->fence_fd = -1; |
| 61 | dmabuf->num_planes = num_planes; |
| 62 | |
| 63 | return dmabuf; |
| 64 | } |
| 65 | |
| 66 | void qemu_dmabuf_free(QemuDmaBuf *dmabuf) |
| 67 | { |
| 68 | if (dmabuf == NULL) { |
| 69 | return; |
| 70 | } |
| 71 | |
| 72 | g_free(dmabuf); |
| 73 | } |
| 74 | |
| 75 | const int *qemu_dmabuf_get_fds(QemuDmaBuf *dmabuf, int *nfds) |
| 76 | { |
| 77 | assert(dmabuf != NULL); |
| 78 | |
| 79 | if (nfds) { |
| 80 | *nfds = ARRAY_SIZE(dmabuf->fd); |
| 81 | } |
| 82 | |
| 83 | return dmabuf->fd; |
| 84 | } |
| 85 | |
| 86 | void qemu_dmabuf_dup_fds(QemuDmaBuf *dmabuf, int *fds, int nfds) |
| 87 | { |
| 88 | int i; |
| 89 | |
| 90 | assert(dmabuf != NULL); |
| 91 | assert(nfds >= dmabuf->num_planes); |
| 92 | |
| 93 | for (i = 0; i < dmabuf->num_planes; i++) { |
| 94 | fds[i] = dmabuf->fd[i] >= 0 ? dup(dmabuf->fd[i]) : -1; |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | void qemu_dmabuf_close(QemuDmaBuf *dmabuf) |
| 99 | { |
| 100 | int i; |
| 101 | |
| 102 | assert(dmabuf != NULL); |
| 103 | |
| 104 | for (i = 0; i < dmabuf->num_planes; i++) { |
| 105 | if (dmabuf->fd[i] >= 0) { |
| 106 | close(dmabuf->fd[i]); |
| 107 | dmabuf->fd[i] = -1; |
| 108 | } |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | uint32_t qemu_dmabuf_get_width(QemuDmaBuf *dmabuf) |
| 113 | { |
| 114 | assert(dmabuf != NULL); |
| 115 | |
| 116 | return dmabuf->width; |
| 117 | } |
| 118 | |
| 119 | uint32_t qemu_dmabuf_get_height(QemuDmaBuf *dmabuf) |
| 120 | { |
| 121 | assert(dmabuf != NULL); |
| 122 | |
| 123 | return dmabuf->height; |
| 124 | } |
| 125 | |
| 126 | const uint32_t *qemu_dmabuf_get_offsets(QemuDmaBuf *dmabuf, int *noffsets) |
| 127 | { |
| 128 | assert(dmabuf != NULL); |
| 129 | |
| 130 | if (noffsets) { |
| 131 | *noffsets = ARRAY_SIZE(dmabuf->offset); |
| 132 | } |
| 133 | |
| 134 | return dmabuf->offset; |
| 135 | } |
| 136 | |
| 137 | const uint32_t *qemu_dmabuf_get_strides(QemuDmaBuf *dmabuf, int *nstrides) |
| 138 | { |
| 139 | assert(dmabuf != NULL); |
| 140 | |
| 141 | if (nstrides) { |
| 142 | *nstrides = ARRAY_SIZE(dmabuf->stride); |
| 143 | } |
| 144 | |
| 145 | return dmabuf->stride; |
| 146 | } |
| 147 | |
| 148 | uint32_t qemu_dmabuf_get_num_planes(QemuDmaBuf *dmabuf) |
| 149 | { |
| 150 | assert(dmabuf != NULL); |
| 151 | |
| 152 | return dmabuf->num_planes; |
| 153 | } |
| 154 | |
| 155 | uint32_t qemu_dmabuf_get_fourcc(QemuDmaBuf *dmabuf) |
| 156 | { |
| 157 | assert(dmabuf != NULL); |
| 158 | |
| 159 | return dmabuf->fourcc; |
| 160 | } |
| 161 | |
| 162 | uint64_t qemu_dmabuf_get_modifier(QemuDmaBuf *dmabuf) |
| 163 | { |
| 164 | assert(dmabuf != NULL); |
| 165 | |
| 166 | return dmabuf->modifier; |
| 167 | } |
| 168 | |
| 169 | uint32_t qemu_dmabuf_get_texture(QemuDmaBuf *dmabuf) |
| 170 | { |
| 171 | assert(dmabuf != NULL); |
| 172 | |
| 173 | return dmabuf->texture; |
| 174 | } |
| 175 | |
| 176 | uint32_t qemu_dmabuf_get_x(QemuDmaBuf *dmabuf) |
| 177 | { |
| 178 | assert(dmabuf != NULL); |
| 179 | |
| 180 | return dmabuf->x; |
| 181 | } |
| 182 | |
| 183 | uint32_t qemu_dmabuf_get_y(QemuDmaBuf *dmabuf) |
| 184 | { |
| 185 | assert(dmabuf != NULL); |
| 186 | |
| 187 | return dmabuf->y; |
| 188 | } |
| 189 | |
| 190 | uint32_t qemu_dmabuf_get_backing_width(QemuDmaBuf *dmabuf) |
| 191 | { |
| 192 | assert(dmabuf != NULL); |
| 193 | |
| 194 | return dmabuf->backing_width; |
| 195 | } |
| 196 | |
| 197 | uint32_t qemu_dmabuf_get_backing_height(QemuDmaBuf *dmabuf) |
| 198 | { |
| 199 | assert(dmabuf != NULL); |
| 200 | |
| 201 | return dmabuf->backing_height; |
| 202 | } |
| 203 | |
| 204 | bool qemu_dmabuf_get_y0_top(QemuDmaBuf *dmabuf) |
| 205 | { |
| 206 | assert(dmabuf != NULL); |
| 207 | |
| 208 | return dmabuf->y0_top; |
| 209 | } |
| 210 | |
| 211 | void *qemu_dmabuf_get_sync(QemuDmaBuf *dmabuf) |
| 212 | { |
| 213 | assert(dmabuf != NULL); |
| 214 | |
| 215 | return dmabuf->sync; |
| 216 | } |
| 217 | |
| 218 | int32_t qemu_dmabuf_get_fence_fd(QemuDmaBuf *dmabuf) |
| 219 | { |
| 220 | assert(dmabuf != NULL); |
| 221 | |
| 222 | return dmabuf->fence_fd; |
| 223 | } |
| 224 | |
| 225 | bool qemu_dmabuf_get_allow_fences(QemuDmaBuf *dmabuf) |
| 226 | { |
| 227 | assert(dmabuf != NULL); |
| 228 | |
| 229 | return dmabuf->allow_fences; |
| 230 | } |
| 231 | |
| 232 | bool qemu_dmabuf_get_draw_submitted(QemuDmaBuf *dmabuf) |
| 233 | { |
| 234 | assert(dmabuf != NULL); |
| 235 | |
| 236 | return dmabuf->draw_submitted; |
| 237 | } |
| 238 | |
| 239 | void qemu_dmabuf_set_texture(QemuDmaBuf *dmabuf, uint32_t texture) |
| 240 | { |
| 241 | assert(dmabuf != NULL); |
| 242 | dmabuf->texture = texture; |
| 243 | } |
| 244 | |
| 245 | void qemu_dmabuf_set_fence_fd(QemuDmaBuf *dmabuf, int32_t fence_fd) |
| 246 | { |
| 247 | assert(dmabuf != NULL); |
| 248 | dmabuf->fence_fd = fence_fd; |
| 249 | } |
| 250 | |
| 251 | void qemu_dmabuf_set_sync(QemuDmaBuf *dmabuf, void *sync) |
| 252 | { |
| 253 | assert(dmabuf != NULL); |
| 254 | dmabuf->sync = sync; |
| 255 | } |
| 256 | |
| 257 | void qemu_dmabuf_set_draw_submitted(QemuDmaBuf *dmabuf, bool draw_submitted) |
| 258 | { |
| 259 | assert(dmabuf != NULL); |
| 260 | dmabuf->draw_submitted = draw_submitted; |
| 261 | } |