Stephen Warren | 91ea288 | 2013-01-29 16:37:36 +0000 | [diff] [blame] | 1 | /* |
Stephen Warren | 8780f22 | 2015-02-16 12:16:14 -0700 | [diff] [blame] | 2 | * (C) Copyright 2012,2015 Stephen Warren |
Stephen Warren | 91ea288 | 2013-01-29 16:37:36 +0000 | [diff] [blame] | 3 | * |
Wolfgang Denk | d79de1d | 2013-07-08 09:37:19 +0200 | [diff] [blame] | 4 | * SPDX-License-Identifier: GPL-2.0+ |
Stephen Warren | 91ea288 | 2013-01-29 16:37:36 +0000 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #ifndef _BCM2835_MBOX_H |
| 8 | #define _BCM2835_MBOX_H |
| 9 | |
| 10 | #include <linux/compiler.h> |
| 11 | |
| 12 | /* |
| 13 | * The BCM2835 SoC contains (at least) two CPUs; the VideoCore (a/k/a "GPU") |
| 14 | * and the ARM CPU. The ARM CPU is often thought of as the main CPU. |
| 15 | * However, the VideoCore actually controls the initial SoC boot, and hides |
| 16 | * much of the hardware behind a protocol. This protocol is transported |
| 17 | * using the SoC's mailbox hardware module. |
| 18 | * |
| 19 | * The mailbox hardware supports passing 32-bit values back and forth. |
| 20 | * Presumably by software convention of the firmware, the bottom 4 bits of the |
| 21 | * value are used to indicate a logical channel, and the upper 28 bits are the |
| 22 | * actual payload. Various channels exist using these simple raw messages. See |
| 23 | * https://github.com/raspberrypi/firmware/wiki/Mailboxes for a list. As an |
| 24 | * example, the messages on the power management channel are a bitmask of |
| 25 | * devices whose power should be enabled. |
| 26 | * |
| 27 | * The property mailbox channel passes messages that contain the (16-byte |
| 28 | * aligned) ARM physical address of a memory buffer. This buffer is passed to |
| 29 | * the VC for processing, is modified in-place by the VC, and the address then |
| 30 | * passed back to the ARM CPU as the response mailbox message to indicate |
| 31 | * request completion. The buffers have a generic and extensible format; each |
| 32 | * buffer contains a standard header, a list of "tags", and a terminating zero |
| 33 | * entry. Each tag contains an ID indicating its type, and length fields for |
| 34 | * generic parsing. With some limitations, an arbitrary set of tags may be |
| 35 | * combined together into a single message buffer. This file defines structs |
| 36 | * representing the header and many individual tag layouts and IDs. |
| 37 | */ |
| 38 | |
| 39 | /* Raw mailbox HW */ |
| 40 | |
Stephen Warren | 8780f22 | 2015-02-16 12:16:14 -0700 | [diff] [blame] | 41 | #ifdef CONFIG_BCM2836 |
| 42 | #define BCM2835_MBOX_PHYSADDR 0x3f00b880 |
| 43 | #else |
Stephen Warren | 91ea288 | 2013-01-29 16:37:36 +0000 | [diff] [blame] | 44 | #define BCM2835_MBOX_PHYSADDR 0x2000b880 |
Stephen Warren | 8780f22 | 2015-02-16 12:16:14 -0700 | [diff] [blame] | 45 | #endif |
Stephen Warren | 91ea288 | 2013-01-29 16:37:36 +0000 | [diff] [blame] | 46 | |
| 47 | struct bcm2835_mbox_regs { |
| 48 | u32 read; |
| 49 | u32 rsvd0[5]; |
| 50 | u32 status; |
| 51 | u32 config; |
| 52 | u32 write; |
| 53 | }; |
| 54 | |
| 55 | #define BCM2835_MBOX_STATUS_WR_FULL 0x80000000 |
| 56 | #define BCM2835_MBOX_STATUS_RD_EMPTY 0x40000000 |
| 57 | |
| 58 | /* Lower 4-bits are channel ID */ |
| 59 | #define BCM2835_CHAN_MASK 0xf |
| 60 | #define BCM2835_MBOX_PACK(chan, data) (((data) & (~BCM2835_CHAN_MASK)) | \ |
| 61 | (chan & BCM2835_CHAN_MASK)) |
| 62 | #define BCM2835_MBOX_UNPACK_CHAN(val) ((val) & BCM2835_CHAN_MASK) |
| 63 | #define BCM2835_MBOX_UNPACK_DATA(val) ((val) & (~BCM2835_CHAN_MASK)) |
| 64 | |
| 65 | /* Property mailbox buffer structures */ |
| 66 | |
| 67 | #define BCM2835_MBOX_PROP_CHAN 8 |
| 68 | |
| 69 | /* All message buffers must start with this header */ |
| 70 | struct bcm2835_mbox_hdr { |
| 71 | u32 buf_size; |
| 72 | u32 code; |
| 73 | }; |
| 74 | |
| 75 | #define BCM2835_MBOX_REQ_CODE 0 |
| 76 | #define BCM2835_MBOX_RESP_CODE_SUCCESS 0x80000000 |
| 77 | |
| 78 | #define BCM2835_MBOX_INIT_HDR(_m_) { \ |
| 79 | memset((_m_), 0, sizeof(*(_m_))); \ |
| 80 | (_m_)->hdr.buf_size = sizeof(*(_m_)); \ |
| 81 | (_m_)->hdr.code = 0; \ |
| 82 | (_m_)->end_tag = 0; \ |
| 83 | } |
| 84 | |
| 85 | /* |
| 86 | * A message buffer contains a list of tags. Each tag must also start with |
| 87 | * a standardized header. |
| 88 | */ |
| 89 | struct bcm2835_mbox_tag_hdr { |
| 90 | u32 tag; |
| 91 | u32 val_buf_size; |
| 92 | u32 val_len; |
| 93 | }; |
| 94 | |
| 95 | #define BCM2835_MBOX_INIT_TAG(_t_, _id_) { \ |
| 96 | (_t_)->tag_hdr.tag = BCM2835_MBOX_TAG_##_id_; \ |
| 97 | (_t_)->tag_hdr.val_buf_size = sizeof((_t_)->body); \ |
| 98 | (_t_)->tag_hdr.val_len = sizeof((_t_)->body.req); \ |
| 99 | } |
| 100 | |
| 101 | #define BCM2835_MBOX_INIT_TAG_NO_REQ(_t_, _id_) { \ |
| 102 | (_t_)->tag_hdr.tag = BCM2835_MBOX_TAG_##_id_; \ |
| 103 | (_t_)->tag_hdr.val_buf_size = sizeof((_t_)->body); \ |
| 104 | (_t_)->tag_hdr.val_len = 0; \ |
| 105 | } |
| 106 | |
| 107 | /* When responding, the VC sets this bit in val_len to indicate a response */ |
| 108 | #define BCM2835_MBOX_TAG_VAL_LEN_RESPONSE 0x80000000 |
| 109 | |
| 110 | /* |
| 111 | * Below we define the ID and struct for many possible tags. This header only |
| 112 | * defines individual tag structs, not entire message structs, since in |
| 113 | * general an arbitrary set of tags may be combined into a single message. |
| 114 | * Clients of the mbox API are expected to define their own overall message |
| 115 | * structures by combining the header, a set of tags, and a terminating |
| 116 | * entry. For example, |
| 117 | * |
| 118 | * struct msg { |
| 119 | * struct bcm2835_mbox_hdr hdr; |
| 120 | * struct bcm2835_mbox_tag_get_arm_mem get_arm_mem; |
| 121 | * ... perhaps other tags here ... |
| 122 | * u32 end_tag; |
| 123 | * }; |
| 124 | */ |
| 125 | |
Stephen Warren | cd210c1 | 2014-11-18 21:40:21 -0700 | [diff] [blame] | 126 | #define BCM2835_MBOX_TAG_GET_BOARD_REV 0x00010002 |
| 127 | |
Stephen Warren | dc7ea68 | 2015-02-16 12:16:15 -0700 | [diff] [blame] | 128 | #ifdef CONFIG_BCM2836 |
| 129 | #define BCM2836_BOARD_REV_2_B 0x4 |
| 130 | #else |
Stephen Warren | cd210c1 | 2014-11-18 21:40:21 -0700 | [diff] [blame] | 131 | /* |
| 132 | * 0x2..0xf from: |
| 133 | * http://raspberryalphaomega.org.uk/2013/02/06/automatic-raspberry-pi-board-revision-detection-model-a-b1-and-b2/ |
| 134 | * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=32733 |
| 135 | * 0x10, 0x11 from swarren's testing |
| 136 | */ |
| 137 | #define BCM2835_BOARD_REV_B_I2C0_2 0x2 |
| 138 | #define BCM2835_BOARD_REV_B_I2C0_3 0x3 |
| 139 | #define BCM2835_BOARD_REV_B_I2C1_4 0x4 |
| 140 | #define BCM2835_BOARD_REV_B_I2C1_5 0x5 |
| 141 | #define BCM2835_BOARD_REV_B_I2C1_6 0x6 |
| 142 | #define BCM2835_BOARD_REV_A_7 0x7 |
| 143 | #define BCM2835_BOARD_REV_A_8 0x8 |
| 144 | #define BCM2835_BOARD_REV_A_9 0x9 |
| 145 | #define BCM2835_BOARD_REV_B_REV2_d 0xd |
| 146 | #define BCM2835_BOARD_REV_B_REV2_e 0xe |
| 147 | #define BCM2835_BOARD_REV_B_REV2_f 0xf |
| 148 | #define BCM2835_BOARD_REV_B_PLUS 0x10 |
| 149 | #define BCM2835_BOARD_REV_CM 0x11 |
Stephen Warren | 18a5fc6 | 2014-12-23 20:01:43 -0700 | [diff] [blame] | 150 | #define BCM2835_BOARD_REV_A_PLUS 0x12 |
Stephen Warren | dc7ea68 | 2015-02-16 12:16:15 -0700 | [diff] [blame] | 151 | #endif |
Stephen Warren | cd210c1 | 2014-11-18 21:40:21 -0700 | [diff] [blame] | 152 | |
| 153 | struct bcm2835_mbox_tag_get_board_rev { |
| 154 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 155 | union { |
| 156 | struct { |
| 157 | } req; |
| 158 | struct { |
| 159 | u32 rev; |
| 160 | } resp; |
| 161 | } body; |
| 162 | }; |
| 163 | |
Stephen Warren | af6e20d | 2014-09-26 20:51:39 -0600 | [diff] [blame] | 164 | #define BCM2835_MBOX_TAG_GET_MAC_ADDRESS 0x00010003 |
| 165 | |
| 166 | struct bcm2835_mbox_tag_get_mac_address { |
| 167 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 168 | union { |
| 169 | struct { |
| 170 | } req; |
| 171 | struct { |
| 172 | u8 mac[6]; |
| 173 | u8 pad[2]; |
| 174 | } resp; |
| 175 | } body; |
| 176 | }; |
| 177 | |
Stephen Warren | 91ea288 | 2013-01-29 16:37:36 +0000 | [diff] [blame] | 178 | #define BCM2835_MBOX_TAG_GET_ARM_MEMORY 0x00010005 |
| 179 | |
| 180 | struct bcm2835_mbox_tag_get_arm_mem { |
| 181 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 182 | union { |
| 183 | struct { |
| 184 | } req; |
| 185 | struct { |
| 186 | u32 mem_base; |
| 187 | u32 mem_size; |
| 188 | } resp; |
| 189 | } body; |
| 190 | }; |
| 191 | |
Stephen Warren | 8672d20 | 2014-01-13 19:50:11 -0700 | [diff] [blame] | 192 | #define BCM2835_MBOX_POWER_DEVID_SDHCI 0 |
| 193 | #define BCM2835_MBOX_POWER_DEVID_UART0 1 |
| 194 | #define BCM2835_MBOX_POWER_DEVID_UART1 2 |
| 195 | #define BCM2835_MBOX_POWER_DEVID_USB_HCD 3 |
| 196 | #define BCM2835_MBOX_POWER_DEVID_I2C0 4 |
| 197 | #define BCM2835_MBOX_POWER_DEVID_I2C1 5 |
| 198 | #define BCM2835_MBOX_POWER_DEVID_I2C2 6 |
| 199 | #define BCM2835_MBOX_POWER_DEVID_SPI 7 |
| 200 | #define BCM2835_MBOX_POWER_DEVID_CCP2TX 8 |
| 201 | |
Stephen Warren | 4152368 | 2014-02-05 20:42:25 -0700 | [diff] [blame] | 202 | #define BCM2835_MBOX_POWER_STATE_RESP_ON (1 << 0) |
Stephen Warren | 8672d20 | 2014-01-13 19:50:11 -0700 | [diff] [blame] | 203 | /* Device doesn't exist */ |
| 204 | #define BCM2835_MBOX_POWER_STATE_RESP_NODEV (1 << 1) |
| 205 | |
| 206 | #define BCM2835_MBOX_TAG_GET_POWER_STATE 0x00020001 |
| 207 | |
| 208 | struct bcm2835_mbox_tag_get_power_state { |
| 209 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 210 | union { |
| 211 | struct { |
| 212 | u32 device_id; |
| 213 | } req; |
| 214 | struct { |
| 215 | u32 device_id; |
| 216 | u32 state; |
| 217 | } resp; |
| 218 | } body; |
| 219 | }; |
| 220 | |
| 221 | #define BCM2835_MBOX_TAG_SET_POWER_STATE 0x00028001 |
| 222 | |
| 223 | #define BCM2835_MBOX_SET_POWER_STATE_REQ_ON (1 << 0) |
| 224 | #define BCM2835_MBOX_SET_POWER_STATE_REQ_WAIT (1 << 1) |
| 225 | |
| 226 | struct bcm2835_mbox_tag_set_power_state { |
| 227 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 228 | union { |
| 229 | struct { |
| 230 | u32 device_id; |
| 231 | u32 state; |
| 232 | } req; |
| 233 | struct { |
| 234 | u32 device_id; |
| 235 | u32 state; |
| 236 | } resp; |
| 237 | } body; |
| 238 | }; |
| 239 | |
Stephen Warren | c4ab971 | 2013-01-29 16:37:42 +0000 | [diff] [blame] | 240 | #define BCM2835_MBOX_TAG_GET_CLOCK_RATE 0x00030002 |
| 241 | |
| 242 | #define BCM2835_MBOX_CLOCK_ID_EMMC 1 |
| 243 | #define BCM2835_MBOX_CLOCK_ID_UART 2 |
| 244 | #define BCM2835_MBOX_CLOCK_ID_ARM 3 |
| 245 | #define BCM2835_MBOX_CLOCK_ID_CORE 4 |
| 246 | #define BCM2835_MBOX_CLOCK_ID_V3D 5 |
| 247 | #define BCM2835_MBOX_CLOCK_ID_H264 6 |
| 248 | #define BCM2835_MBOX_CLOCK_ID_ISP 7 |
| 249 | #define BCM2835_MBOX_CLOCK_ID_SDRAM 8 |
| 250 | #define BCM2835_MBOX_CLOCK_ID_PIXEL 9 |
| 251 | #define BCM2835_MBOX_CLOCK_ID_PWM 10 |
| 252 | |
| 253 | struct bcm2835_mbox_tag_get_clock_rate { |
| 254 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 255 | union { |
| 256 | struct { |
| 257 | u32 clock_id; |
| 258 | } req; |
| 259 | struct { |
| 260 | u32 clock_id; |
| 261 | u32 rate_hz; |
| 262 | } resp; |
| 263 | } body; |
| 264 | }; |
| 265 | |
Stephen Warren | 91ea288 | 2013-01-29 16:37:36 +0000 | [diff] [blame] | 266 | #define BCM2835_MBOX_TAG_ALLOCATE_BUFFER 0x00040001 |
| 267 | |
| 268 | struct bcm2835_mbox_tag_allocate_buffer { |
| 269 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 270 | union { |
| 271 | struct { |
| 272 | u32 alignment; |
| 273 | } req; |
| 274 | struct { |
| 275 | u32 fb_address; |
| 276 | u32 fb_size; |
| 277 | } resp; |
| 278 | } body; |
| 279 | }; |
| 280 | |
| 281 | #define BCM2835_MBOX_TAG_RELEASE_BUFFER 0x00048001 |
| 282 | |
| 283 | struct bcm2835_mbox_tag_release_buffer { |
| 284 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 285 | union { |
| 286 | struct { |
| 287 | } req; |
| 288 | struct { |
| 289 | } resp; |
| 290 | } body; |
| 291 | }; |
| 292 | |
| 293 | #define BCM2835_MBOX_TAG_BLANK_SCREEN 0x00040002 |
| 294 | |
| 295 | struct bcm2835_mbox_tag_blank_screen { |
| 296 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 297 | union { |
| 298 | struct { |
| 299 | /* bit 0 means on, other bots reserved */ |
| 300 | u32 state; |
| 301 | } req; |
| 302 | struct { |
| 303 | u32 state; |
| 304 | } resp; |
| 305 | } body; |
| 306 | }; |
| 307 | |
| 308 | /* Physical means output signal */ |
| 309 | #define BCM2835_MBOX_TAG_GET_PHYSICAL_W_H 0x00040003 |
| 310 | #define BCM2835_MBOX_TAG_TEST_PHYSICAL_W_H 0x00044003 |
| 311 | #define BCM2835_MBOX_TAG_SET_PHYSICAL_W_H 0x00048003 |
| 312 | |
| 313 | struct bcm2835_mbox_tag_physical_w_h { |
| 314 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 315 | union { |
| 316 | /* req not used for get */ |
| 317 | struct { |
| 318 | u32 width; |
| 319 | u32 height; |
| 320 | } req; |
| 321 | struct { |
| 322 | u32 width; |
| 323 | u32 height; |
| 324 | } resp; |
| 325 | } body; |
| 326 | }; |
| 327 | |
| 328 | /* Virtual means display buffer */ |
| 329 | #define BCM2835_MBOX_TAG_GET_VIRTUAL_W_H 0x00040004 |
| 330 | #define BCM2835_MBOX_TAG_TEST_VIRTUAL_W_H 0x00044004 |
| 331 | #define BCM2835_MBOX_TAG_SET_VIRTUAL_W_H 0x00048004 |
| 332 | |
| 333 | struct bcm2835_mbox_tag_virtual_w_h { |
| 334 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 335 | union { |
| 336 | /* req not used for get */ |
| 337 | struct { |
| 338 | u32 width; |
| 339 | u32 height; |
| 340 | } req; |
| 341 | struct { |
| 342 | u32 width; |
| 343 | u32 height; |
| 344 | } resp; |
| 345 | } body; |
| 346 | }; |
| 347 | |
| 348 | #define BCM2835_MBOX_TAG_GET_DEPTH 0x00040005 |
| 349 | #define BCM2835_MBOX_TAG_TEST_DEPTH 0x00044005 |
| 350 | #define BCM2835_MBOX_TAG_SET_DEPTH 0x00048005 |
| 351 | |
| 352 | struct bcm2835_mbox_tag_depth { |
| 353 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 354 | union { |
| 355 | /* req not used for get */ |
| 356 | struct { |
| 357 | u32 bpp; |
| 358 | } req; |
| 359 | struct { |
| 360 | u32 bpp; |
| 361 | } resp; |
| 362 | } body; |
| 363 | }; |
| 364 | |
| 365 | #define BCM2835_MBOX_TAG_GET_PIXEL_ORDER 0x00040006 |
| 366 | #define BCM2835_MBOX_TAG_TEST_PIXEL_ORDER 0x00044005 |
| 367 | #define BCM2835_MBOX_TAG_SET_PIXEL_ORDER 0x00048006 |
| 368 | |
| 369 | #define BCM2835_MBOX_PIXEL_ORDER_BGR 0 |
| 370 | #define BCM2835_MBOX_PIXEL_ORDER_RGB 1 |
| 371 | |
| 372 | struct bcm2835_mbox_tag_pixel_order { |
| 373 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 374 | union { |
| 375 | /* req not used for get */ |
| 376 | struct { |
| 377 | u32 order; |
| 378 | } req; |
| 379 | struct { |
| 380 | u32 order; |
| 381 | } resp; |
| 382 | } body; |
| 383 | }; |
| 384 | |
| 385 | #define BCM2835_MBOX_TAG_GET_ALPHA_MODE 0x00040007 |
| 386 | #define BCM2835_MBOX_TAG_TEST_ALPHA_MODE 0x00044007 |
| 387 | #define BCM2835_MBOX_TAG_SET_ALPHA_MODE 0x00048007 |
| 388 | |
| 389 | #define BCM2835_MBOX_ALPHA_MODE_0_OPAQUE 0 |
| 390 | #define BCM2835_MBOX_ALPHA_MODE_0_TRANSPARENT 1 |
| 391 | #define BCM2835_MBOX_ALPHA_MODE_IGNORED 2 |
| 392 | |
| 393 | struct bcm2835_mbox_tag_alpha_mode { |
| 394 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 395 | union { |
| 396 | /* req not used for get */ |
| 397 | struct { |
| 398 | u32 alpha; |
| 399 | } req; |
| 400 | struct { |
| 401 | u32 alpha; |
| 402 | } resp; |
| 403 | } body; |
| 404 | }; |
| 405 | |
| 406 | #define BCM2835_MBOX_TAG_GET_PITCH 0x00040008 |
| 407 | |
| 408 | struct bcm2835_mbox_tag_pitch { |
| 409 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 410 | union { |
| 411 | struct { |
| 412 | } req; |
| 413 | struct { |
| 414 | u32 pitch; |
| 415 | } resp; |
| 416 | } body; |
| 417 | }; |
| 418 | |
| 419 | /* Offset of display window within buffer */ |
| 420 | #define BCM2835_MBOX_TAG_GET_VIRTUAL_OFFSET 0x00040009 |
| 421 | #define BCM2835_MBOX_TAG_TEST_VIRTUAL_OFFSET 0x00044009 |
| 422 | #define BCM2835_MBOX_TAG_SET_VIRTUAL_OFFSET 0x00048009 |
| 423 | |
| 424 | struct bcm2835_mbox_tag_virtual_offset { |
| 425 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 426 | union { |
| 427 | /* req not used for get */ |
| 428 | struct { |
| 429 | u32 x; |
| 430 | u32 y; |
| 431 | } req; |
| 432 | struct { |
| 433 | u32 x; |
| 434 | u32 y; |
| 435 | } resp; |
| 436 | } body; |
| 437 | }; |
| 438 | |
| 439 | #define BCM2835_MBOX_TAG_GET_OVERSCAN 0x0004000a |
| 440 | #define BCM2835_MBOX_TAG_TEST_OVERSCAN 0x0004400a |
| 441 | #define BCM2835_MBOX_TAG_SET_OVERSCAN 0x0004800a |
| 442 | |
| 443 | struct bcm2835_mbox_tag_overscan { |
| 444 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 445 | union { |
| 446 | /* req not used for get */ |
| 447 | struct { |
| 448 | u32 top; |
| 449 | u32 bottom; |
| 450 | u32 left; |
| 451 | u32 right; |
| 452 | } req; |
| 453 | struct { |
| 454 | u32 top; |
| 455 | u32 bottom; |
| 456 | u32 left; |
Andre Heider | 952ad9e | 2013-10-22 22:27:20 +0200 | [diff] [blame] | 457 | u32 right; |
Stephen Warren | 91ea288 | 2013-01-29 16:37:36 +0000 | [diff] [blame] | 458 | } resp; |
| 459 | } body; |
| 460 | }; |
| 461 | |
| 462 | #define BCM2835_MBOX_TAG_GET_PALETTE 0x0004000b |
| 463 | |
| 464 | struct bcm2835_mbox_tag_get_palette { |
| 465 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 466 | union { |
| 467 | struct { |
| 468 | } req; |
| 469 | struct { |
| 470 | u32 data[1024]; |
| 471 | } resp; |
| 472 | } body; |
| 473 | }; |
| 474 | |
| 475 | #define BCM2835_MBOX_TAG_TEST_PALETTE 0x0004400b |
| 476 | |
| 477 | struct bcm2835_mbox_tag_test_palette { |
| 478 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 479 | union { |
| 480 | struct { |
| 481 | u32 offset; |
| 482 | u32 num_entries; |
| 483 | u32 data[256]; |
| 484 | } req; |
| 485 | struct { |
| 486 | u32 is_invalid; |
| 487 | } resp; |
| 488 | } body; |
| 489 | }; |
| 490 | |
| 491 | #define BCM2835_MBOX_TAG_SET_PALETTE 0x0004800b |
| 492 | |
| 493 | struct bcm2835_mbox_tag_set_palette { |
| 494 | struct bcm2835_mbox_tag_hdr tag_hdr; |
| 495 | union { |
| 496 | struct { |
| 497 | u32 offset; |
| 498 | u32 num_entries; |
| 499 | u32 data[256]; |
| 500 | } req; |
| 501 | struct { |
| 502 | u32 is_invalid; |
| 503 | } resp; |
| 504 | } body; |
| 505 | }; |
| 506 | |
| 507 | /* |
| 508 | * Pass a raw u32 message to the VC, and receive a raw u32 back. |
| 509 | * |
| 510 | * Returns 0 for success, any other value for error. |
| 511 | */ |
| 512 | int bcm2835_mbox_call_raw(u32 chan, u32 send, u32 *recv); |
| 513 | |
| 514 | /* |
| 515 | * Pass a complete property-style buffer to the VC, and wait until it has |
| 516 | * been processed. |
| 517 | * |
| 518 | * This function expects a pointer to the mbox_hdr structure in an attempt |
| 519 | * to ensure some degree of type safety. However, some number of tags and |
| 520 | * a termination value are expected to immediately follow the header in |
| 521 | * memory, as required by the property protocol. |
| 522 | * |
| 523 | * Returns 0 for success, any other value for error. |
| 524 | */ |
| 525 | int bcm2835_mbox_call_prop(u32 chan, struct bcm2835_mbox_hdr *buffer); |
| 526 | |
| 527 | #endif |