Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Texas Instruments System Control Interface Driver |
| 3 | * Based on Linux and U-Boot implementation |
| 4 | * |
| 5 | * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/ |
| 6 | * |
| 7 | * SPDX-License-Identifier: BSD-3-Clause |
| 8 | */ |
| 9 | |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 10 | #include <errno.h> |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 11 | #include <stdbool.h> |
| 12 | #include <stddef.h> |
| 13 | #include <string.h> |
| 14 | |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 15 | #include <platform_def.h> |
| 16 | |
| 17 | #include <common/debug.h> |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 18 | #include <sec_proxy.h> |
| 19 | |
| 20 | #include "ti_sci_protocol.h" |
| 21 | #include "ti_sci.h" |
| 22 | |
| 23 | /** |
| 24 | * struct ti_sci_desc - Description of SoC integration |
| 25 | * @host_id: Host identifier representing the compute entity |
| 26 | * @max_msg_size: Maximum size of data per message that can be handled |
| 27 | */ |
| 28 | struct ti_sci_desc { |
| 29 | uint8_t host_id; |
| 30 | int max_msg_size; |
| 31 | }; |
| 32 | |
| 33 | /** |
| 34 | * struct ti_sci_info - Structure representing a TI SCI instance |
| 35 | * @desc: SoC description for this instance |
| 36 | * @seq: Seq id used for verification for tx and rx message |
| 37 | */ |
| 38 | struct ti_sci_info { |
| 39 | const struct ti_sci_desc desc; |
| 40 | uint8_t seq; |
| 41 | }; |
| 42 | |
| 43 | static struct ti_sci_info info = { |
| 44 | .desc = { |
| 45 | .host_id = TI_SCI_HOST_ID, |
| 46 | .max_msg_size = TI_SCI_MAX_MESSAGE_SIZE, |
| 47 | }, |
| 48 | .seq = 0x0a, |
| 49 | }; |
| 50 | |
| 51 | /** |
| 52 | * struct ti_sci_xfer - Structure representing a message flow |
| 53 | * @tx_message: Transmit message |
| 54 | * @rx_message: Receive message |
| 55 | */ |
| 56 | struct ti_sci_xfer { |
| 57 | struct k3_sec_proxy_msg tx_message; |
| 58 | struct k3_sec_proxy_msg rx_message; |
| 59 | }; |
| 60 | |
| 61 | /** |
| 62 | * ti_sci_setup_one_xfer() - Setup one message type |
| 63 | * |
| 64 | * @msg_type: Message type |
| 65 | * @msg_flags: Flag to set for the message |
| 66 | * @tx_buf: Buffer to be sent to mailbox channel |
| 67 | * @tx_message_size: transmit message size |
| 68 | * @rx_buf: Buffer to be received from mailbox channel |
| 69 | * @rx_message_size: receive message size |
| 70 | * |
| 71 | * Helper function which is used by various command functions that are |
| 72 | * exposed to clients of this driver for allocating a message traffic event. |
| 73 | * |
| 74 | * Return: 0 if all goes well, else appropriate error message |
| 75 | */ |
| 76 | static int ti_sci_setup_one_xfer(uint16_t msg_type, uint32_t msg_flags, |
| 77 | void *tx_buf, |
| 78 | size_t tx_message_size, |
| 79 | void *rx_buf, |
| 80 | size_t rx_message_size, |
| 81 | struct ti_sci_xfer *xfer) |
| 82 | { |
| 83 | struct ti_sci_msg_hdr *hdr; |
| 84 | |
| 85 | /* Ensure we have sane transfer sizes */ |
| 86 | if (rx_message_size > info.desc.max_msg_size || |
| 87 | tx_message_size > info.desc.max_msg_size || |
| 88 | rx_message_size < sizeof(*hdr) || |
| 89 | tx_message_size < sizeof(*hdr)) |
| 90 | return -ERANGE; |
| 91 | |
| 92 | info.seq++; |
| 93 | |
| 94 | hdr = (struct ti_sci_msg_hdr *)tx_buf; |
| 95 | hdr->seq = info.seq; |
| 96 | hdr->type = msg_type; |
| 97 | hdr->host = info.desc.host_id; |
| 98 | hdr->flags = msg_flags; |
| 99 | |
| 100 | xfer->tx_message.buf = tx_buf; |
| 101 | xfer->tx_message.len = tx_message_size; |
| 102 | |
| 103 | xfer->rx_message.buf = rx_buf; |
| 104 | xfer->rx_message.len = rx_message_size; |
| 105 | |
| 106 | return 0; |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * ti_sci_get_response() - Receive response from mailbox channel |
| 111 | * |
| 112 | * @xfer: Transfer to initiate and wait for response |
| 113 | * @chan: Channel to receive the response |
| 114 | * |
| 115 | * Return: 0 if all goes well, else appropriate error message |
| 116 | */ |
| 117 | static inline int ti_sci_get_response(struct ti_sci_xfer *xfer, |
| 118 | enum k3_sec_proxy_chan_id chan) |
| 119 | { |
| 120 | struct k3_sec_proxy_msg *msg = &xfer->rx_message; |
| 121 | struct ti_sci_msg_hdr *hdr; |
| 122 | int ret; |
| 123 | |
| 124 | /* Receive the response */ |
| 125 | ret = k3_sec_proxy_recv(chan, msg); |
| 126 | if (ret) { |
| 127 | ERROR("Message receive failed (%d)\n", ret); |
| 128 | return ret; |
| 129 | } |
| 130 | |
| 131 | /* msg is updated by Secure Proxy driver */ |
| 132 | hdr = (struct ti_sci_msg_hdr *)msg->buf; |
| 133 | |
| 134 | /* Sanity check for message response */ |
| 135 | if (hdr->seq != info.seq) { |
| 136 | ERROR("Message for %d is not expected\n", hdr->seq); |
| 137 | return -EINVAL; |
| 138 | } |
| 139 | |
| 140 | if (msg->len > info.desc.max_msg_size) { |
| 141 | ERROR("Unable to handle %lu xfer (max %d)\n", |
| 142 | msg->len, info.desc.max_msg_size); |
| 143 | return -EINVAL; |
| 144 | } |
| 145 | |
| 146 | return 0; |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * ti_sci_do_xfer() - Do one transfer |
| 151 | * |
| 152 | * @xfer: Transfer to initiate and wait for response |
| 153 | * |
| 154 | * Return: 0 if all goes well, else appropriate error message |
| 155 | */ |
| 156 | static inline int ti_sci_do_xfer(struct ti_sci_xfer *xfer) |
| 157 | { |
| 158 | struct k3_sec_proxy_msg *msg = &xfer->tx_message; |
| 159 | int ret; |
| 160 | |
Andrew F. Davis | 18d371d | 2019-01-04 12:49:16 -0600 | [diff] [blame] | 161 | /* Clear any spurious messages in receive queue */ |
| 162 | ret = k3_sec_proxy_clear_rx_thread(SP_RESPONSE); |
| 163 | if (ret) { |
| 164 | ERROR("Could not clear response queue (%d)\n", ret); |
| 165 | return ret; |
| 166 | } |
| 167 | |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 168 | /* Send the message */ |
| 169 | ret = k3_sec_proxy_send(SP_HIGH_PRIORITY, msg); |
| 170 | if (ret) { |
| 171 | ERROR("Message sending failed (%d)\n", ret); |
| 172 | return ret; |
| 173 | } |
| 174 | |
Andrew F. Davis | 18d371d | 2019-01-04 12:49:16 -0600 | [diff] [blame] | 175 | /* Get the response */ |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 176 | ret = ti_sci_get_response(xfer, SP_RESPONSE); |
| 177 | if (ret) { |
| 178 | ERROR("Failed to get response (%d)\n", ret); |
| 179 | return ret; |
| 180 | } |
| 181 | |
| 182 | return 0; |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * ti_sci_get_revision() - Get the revision of the SCI entity |
| 187 | * |
| 188 | * Updates the SCI information in the internal data structure. |
| 189 | * |
| 190 | * Return: 0 if all goes well, else appropriate error message |
| 191 | */ |
| 192 | int ti_sci_get_revision(struct ti_sci_msg_resp_version *rev_info) |
| 193 | { |
| 194 | struct ti_sci_msg_hdr hdr; |
| 195 | struct ti_sci_xfer xfer; |
| 196 | int ret; |
| 197 | |
| 198 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_VERSION, 0x0, |
| 199 | &hdr, sizeof(hdr), |
| 200 | rev_info, sizeof(*rev_info), |
| 201 | &xfer); |
| 202 | if (ret) { |
| 203 | ERROR("Message alloc failed (%d)\n", ret); |
| 204 | return ret; |
| 205 | } |
| 206 | |
| 207 | ret = ti_sci_do_xfer(&xfer); |
| 208 | if (ret) { |
| 209 | ERROR("Transfer send failed (%d)\n", ret); |
| 210 | return ret; |
| 211 | } |
| 212 | |
| 213 | return 0; |
| 214 | } |
| 215 | |
| 216 | /** |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 217 | * ti_sci_is_response_ack() - Generic ACK/NACK message check |
| 218 | * |
| 219 | * @r: pointer to response buffer |
| 220 | * |
| 221 | * Return: true if the response was an ACK, else returns false |
| 222 | */ |
| 223 | static inline bool ti_sci_is_response_ack(void *r) |
| 224 | { |
| 225 | struct ti_sci_msg_hdr *hdr = r; |
| 226 | |
| 227 | return hdr->flags & TI_SCI_FLAG_RESP_GENERIC_ACK ? true : false; |
| 228 | } |
| 229 | |
| 230 | /** |
| 231 | * ti_sci_device_set_state() - Set device state |
| 232 | * |
| 233 | * @id: Device identifier |
| 234 | * @flags: flags to setup for the device |
| 235 | * @state: State to move the device to |
| 236 | * |
| 237 | * Return: 0 if all goes well, else appropriate error message |
| 238 | */ |
Andrew F. Davis | 8335bc2 | 2019-02-11 12:55:25 -0600 | [diff] [blame] | 239 | static int ti_sci_device_set_state(uint32_t id, uint32_t flags, uint8_t state) |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 240 | { |
| 241 | struct ti_sci_msg_req_set_device_state req; |
| 242 | struct ti_sci_msg_hdr resp; |
| 243 | |
| 244 | struct ti_sci_xfer xfer; |
| 245 | int ret; |
| 246 | |
| 247 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_DEVICE_STATE, |
| 248 | flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 249 | &req, sizeof(req), |
| 250 | &resp, sizeof(resp), |
| 251 | &xfer); |
| 252 | if (ret) { |
| 253 | ERROR("Message alloc failed (%d)\n", ret); |
| 254 | return ret; |
| 255 | } |
| 256 | |
| 257 | req.id = id; |
| 258 | req.state = state; |
| 259 | |
| 260 | ret = ti_sci_do_xfer(&xfer); |
| 261 | if (ret) { |
| 262 | ERROR("Transfer send failed (%d)\n", ret); |
| 263 | return ret; |
| 264 | } |
| 265 | |
| 266 | if (!ti_sci_is_response_ack(&resp)) |
| 267 | return -ENODEV; |
| 268 | |
| 269 | return 0; |
| 270 | } |
| 271 | |
| 272 | /** |
| 273 | * ti_sci_device_get_state() - Get device state |
| 274 | * |
| 275 | * @id: Device Identifier |
| 276 | * @clcnt: Pointer to Context Loss Count |
| 277 | * @resets: pointer to resets |
| 278 | * @p_state: pointer to p_state |
| 279 | * @c_state: pointer to c_state |
| 280 | * |
| 281 | * Return: 0 if all goes well, else appropriate error message |
| 282 | */ |
Andrew F. Davis | 8335bc2 | 2019-02-11 12:55:25 -0600 | [diff] [blame] | 283 | static int ti_sci_device_get_state(uint32_t id, uint32_t *clcnt, |
| 284 | uint32_t *resets, uint8_t *p_state, |
| 285 | uint8_t *c_state) |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 286 | { |
| 287 | struct ti_sci_msg_req_get_device_state req; |
| 288 | struct ti_sci_msg_resp_get_device_state resp; |
| 289 | |
| 290 | struct ti_sci_xfer xfer; |
| 291 | int ret; |
| 292 | |
| 293 | if (!clcnt && !resets && !p_state && !c_state) |
| 294 | return -EINVAL; |
| 295 | |
| 296 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_DEVICE_STATE, 0, |
| 297 | &req, sizeof(req), |
| 298 | &resp, sizeof(resp), |
| 299 | &xfer); |
| 300 | if (ret) { |
| 301 | ERROR("Message alloc failed (%d)\n", ret); |
| 302 | return ret; |
| 303 | } |
| 304 | |
| 305 | req.id = id; |
| 306 | |
| 307 | ret = ti_sci_do_xfer(&xfer); |
| 308 | if (ret) { |
| 309 | ERROR("Transfer send failed (%d)\n", ret); |
| 310 | return ret; |
| 311 | } |
| 312 | |
| 313 | if (!ti_sci_is_response_ack(&resp)) |
| 314 | return -ENODEV; |
| 315 | |
| 316 | if (clcnt) |
| 317 | *clcnt = resp.context_loss_count; |
| 318 | if (resets) |
| 319 | *resets = resp.resets; |
| 320 | if (p_state) |
| 321 | *p_state = resp.programmed_state; |
| 322 | if (c_state) |
| 323 | *c_state = resp.current_state; |
| 324 | |
| 325 | return 0; |
| 326 | } |
| 327 | |
| 328 | /** |
| 329 | * ti_sci_device_get() - Request for device managed by TISCI |
| 330 | * |
| 331 | * @id: Device Identifier |
| 332 | * |
| 333 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 334 | * usage count by balancing get_device with put_device. No refcounting is |
| 335 | * managed by driver for that purpose. |
| 336 | * |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 337 | * Return: 0 if all goes well, else appropriate error message |
| 338 | */ |
| 339 | int ti_sci_device_get(uint32_t id) |
| 340 | { |
Andrew F. Davis | fbe6c06 | 2019-02-11 12:58:32 -0600 | [diff] [blame^] | 341 | return ti_sci_device_set_state(id, 0, MSG_DEVICE_SW_STATE_ON); |
| 342 | } |
| 343 | |
| 344 | /** |
| 345 | * ti_sci_device_get_exclusive() - Exclusive request for device managed by TISCI |
| 346 | * |
| 347 | * @id: Device Identifier |
| 348 | * |
| 349 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 350 | * usage count by balancing get_device with put_device. No refcounting is |
| 351 | * managed by driver for that purpose. |
| 352 | * |
| 353 | * NOTE: This _exclusive version of the get API is for exclusive access to the |
| 354 | * device. Any other host in the system will fail to get this device after this |
| 355 | * call until exclusive access is released with device_put or a non-exclusive |
| 356 | * set call. |
| 357 | * |
| 358 | * Return: 0 if all goes well, else appropriate error message |
| 359 | */ |
| 360 | int ti_sci_device_get_exclusive(uint32_t id) |
| 361 | { |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 362 | return ti_sci_device_set_state(id, |
| 363 | MSG_FLAG_DEVICE_EXCLUSIVE, |
| 364 | MSG_DEVICE_SW_STATE_ON); |
| 365 | } |
| 366 | |
| 367 | /** |
| 368 | * ti_sci_device_idle() - Idle a device managed by TISCI |
| 369 | * |
| 370 | * @id: Device Identifier |
| 371 | * |
| 372 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 373 | * usage count by balancing get_device with put_device. No refcounting is |
| 374 | * managed by driver for that purpose. |
| 375 | * |
| 376 | * Return: 0 if all goes well, else appropriate error message |
| 377 | */ |
| 378 | int ti_sci_device_idle(uint32_t id) |
| 379 | { |
Andrew F. Davis | fbe6c06 | 2019-02-11 12:58:32 -0600 | [diff] [blame^] | 380 | return ti_sci_device_set_state(id, 0, MSG_DEVICE_SW_STATE_RETENTION); |
| 381 | } |
| 382 | |
| 383 | /** |
| 384 | * ti_sci_device_idle_exclusive() - Exclusive idle a device managed by TISCI |
| 385 | * |
| 386 | * @id: Device Identifier |
| 387 | * |
| 388 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 389 | * usage count by balancing get_device with put_device. No refcounting is |
| 390 | * managed by driver for that purpose. |
| 391 | * |
| 392 | * NOTE: This _exclusive version of the idle API is for exclusive access to |
| 393 | * the device. Any other host in the system will fail to get this device after |
| 394 | * this call until exclusive access is released with device_put or a |
| 395 | * non-exclusive set call. |
| 396 | * |
| 397 | * Return: 0 if all goes well, else appropriate error message |
| 398 | */ |
| 399 | int ti_sci_device_idle_exclusive(uint32_t id) |
| 400 | { |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 401 | return ti_sci_device_set_state(id, |
| 402 | MSG_FLAG_DEVICE_EXCLUSIVE, |
| 403 | MSG_DEVICE_SW_STATE_RETENTION); |
| 404 | } |
| 405 | |
| 406 | /** |
| 407 | * ti_sci_device_put() - Release a device managed by TISCI |
| 408 | * |
| 409 | * @id: Device Identifier |
| 410 | * |
| 411 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 412 | * usage count by balancing get_device with put_device. No refcounting is |
| 413 | * managed by driver for that purpose. |
| 414 | * |
| 415 | * Return: 0 if all goes well, else appropriate error message |
| 416 | */ |
| 417 | int ti_sci_device_put(uint32_t id) |
| 418 | { |
| 419 | return ti_sci_device_set_state(id, 0, MSG_DEVICE_SW_STATE_AUTO_OFF); |
| 420 | } |
| 421 | |
| 422 | /** |
| 423 | * ti_sci_device_is_valid() - Is the device valid |
| 424 | * |
| 425 | * @id: Device Identifier |
| 426 | * |
| 427 | * Return: 0 if all goes well and the device ID is valid, else return |
| 428 | * appropriate error |
| 429 | */ |
| 430 | int ti_sci_device_is_valid(uint32_t id) |
| 431 | { |
| 432 | uint8_t unused; |
| 433 | |
| 434 | /* check the device state which will also tell us if the ID is valid */ |
| 435 | return ti_sci_device_get_state(id, NULL, NULL, NULL, &unused); |
| 436 | } |
| 437 | |
| 438 | /** |
| 439 | * ti_sci_device_get_clcnt() - Get context loss counter |
| 440 | * |
| 441 | * @id: Device Identifier |
| 442 | * @count: Pointer to Context Loss counter to populate |
| 443 | * |
| 444 | * Return: 0 if all goes well, else appropriate error message |
| 445 | */ |
| 446 | int ti_sci_device_get_clcnt(uint32_t id, uint32_t *count) |
| 447 | { |
| 448 | return ti_sci_device_get_state(id, count, NULL, NULL, NULL); |
| 449 | } |
| 450 | |
| 451 | /** |
| 452 | * ti_sci_device_is_idle() - Check if the device is requested to be idle |
| 453 | * |
| 454 | * @id: Device Identifier |
| 455 | * @r_state: true if requested to be idle |
| 456 | * |
| 457 | * Return: 0 if all goes well, else appropriate error message |
| 458 | */ |
| 459 | int ti_sci_device_is_idle(uint32_t id, bool *r_state) |
| 460 | { |
| 461 | int ret; |
| 462 | uint8_t state; |
| 463 | |
| 464 | if (!r_state) |
| 465 | return -EINVAL; |
| 466 | |
| 467 | ret = ti_sci_device_get_state(id, NULL, NULL, &state, NULL); |
| 468 | if (ret) |
| 469 | return ret; |
| 470 | |
| 471 | *r_state = (state == MSG_DEVICE_SW_STATE_RETENTION); |
| 472 | |
| 473 | return 0; |
| 474 | } |
| 475 | |
| 476 | /** |
| 477 | * ti_sci_device_is_stop() - Check if the device is requested to be stopped |
| 478 | * |
| 479 | * @id: Device Identifier |
| 480 | * @r_state: true if requested to be stopped |
| 481 | * @curr_state: true if currently stopped |
| 482 | * |
| 483 | * Return: 0 if all goes well, else appropriate error message |
| 484 | */ |
| 485 | int ti_sci_device_is_stop(uint32_t id, bool *r_state, bool *curr_state) |
| 486 | { |
| 487 | int ret; |
| 488 | uint8_t p_state, c_state; |
| 489 | |
| 490 | if (!r_state && !curr_state) |
| 491 | return -EINVAL; |
| 492 | |
| 493 | ret = ti_sci_device_get_state(id, NULL, NULL, &p_state, &c_state); |
| 494 | if (ret) |
| 495 | return ret; |
| 496 | |
| 497 | if (r_state) |
| 498 | *r_state = (p_state == MSG_DEVICE_SW_STATE_AUTO_OFF); |
| 499 | if (curr_state) |
| 500 | *curr_state = (c_state == MSG_DEVICE_HW_STATE_OFF); |
| 501 | |
| 502 | return 0; |
| 503 | } |
| 504 | |
| 505 | /** |
| 506 | * ti_sci_device_is_on() - Check if the device is requested to be ON |
| 507 | * |
| 508 | * @id: Device Identifier |
| 509 | * @r_state: true if requested to be ON |
| 510 | * @curr_state: true if currently ON and active |
| 511 | * |
| 512 | * Return: 0 if all goes well, else appropriate error message |
| 513 | */ |
| 514 | int ti_sci_device_is_on(uint32_t id, bool *r_state, bool *curr_state) |
| 515 | { |
| 516 | int ret; |
| 517 | uint8_t p_state, c_state; |
| 518 | |
| 519 | if (!r_state && !curr_state) |
| 520 | return -EINVAL; |
| 521 | |
| 522 | ret = |
| 523 | ti_sci_device_get_state(id, NULL, NULL, &p_state, &c_state); |
| 524 | if (ret) |
| 525 | return ret; |
| 526 | |
| 527 | if (r_state) |
| 528 | *r_state = (p_state == MSG_DEVICE_SW_STATE_ON); |
| 529 | if (curr_state) |
| 530 | *curr_state = (c_state == MSG_DEVICE_HW_STATE_ON); |
| 531 | |
| 532 | return 0; |
| 533 | } |
| 534 | |
| 535 | /** |
| 536 | * ti_sci_device_is_trans() - Check if the device is currently transitioning |
| 537 | * |
| 538 | * @id: Device Identifier |
| 539 | * @curr_state: true if currently transitioning |
| 540 | * |
| 541 | * Return: 0 if all goes well, else appropriate error message |
| 542 | */ |
| 543 | int ti_sci_device_is_trans(uint32_t id, bool *curr_state) |
| 544 | { |
| 545 | int ret; |
| 546 | uint8_t state; |
| 547 | |
| 548 | if (!curr_state) |
| 549 | return -EINVAL; |
| 550 | |
| 551 | ret = ti_sci_device_get_state(id, NULL, NULL, NULL, &state); |
| 552 | if (ret) |
| 553 | return ret; |
| 554 | |
| 555 | *curr_state = (state == MSG_DEVICE_HW_STATE_TRANS); |
| 556 | |
| 557 | return 0; |
| 558 | } |
| 559 | |
| 560 | /** |
| 561 | * ti_sci_device_set_resets() - Set resets for device managed by TISCI |
| 562 | * |
| 563 | * @id: Device Identifier |
| 564 | * @reset_state: Device specific reset bit field |
| 565 | * |
| 566 | * Return: 0 if all goes well, else appropriate error message |
| 567 | */ |
| 568 | int ti_sci_device_set_resets(uint32_t id, uint32_t reset_state) |
| 569 | { |
| 570 | struct ti_sci_msg_req_set_device_resets req; |
| 571 | struct ti_sci_msg_hdr resp; |
| 572 | |
| 573 | struct ti_sci_xfer xfer; |
| 574 | int ret; |
| 575 | |
| 576 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_DEVICE_RESETS, |
| 577 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 578 | &req, sizeof(req), |
| 579 | &resp, sizeof(resp), |
| 580 | &xfer); |
| 581 | if (ret) { |
| 582 | ERROR("Message alloc failed (%d)\n", ret); |
| 583 | return ret; |
| 584 | } |
| 585 | |
| 586 | req.id = id; |
| 587 | req.resets = reset_state; |
| 588 | |
| 589 | ret = ti_sci_do_xfer(&xfer); |
| 590 | if (ret) { |
| 591 | ERROR("Transfer send failed (%d)\n", ret); |
| 592 | return ret; |
| 593 | } |
| 594 | |
| 595 | if (!ti_sci_is_response_ack(&resp)) |
| 596 | return -ENODEV; |
| 597 | |
| 598 | return 0; |
| 599 | } |
| 600 | |
| 601 | /** |
| 602 | * ti_sci_device_get_resets() - Get reset state for device managed by TISCI |
| 603 | * |
| 604 | * @id: Device Identifier |
| 605 | * @reset_state: Pointer to reset state to populate |
| 606 | * |
| 607 | * Return: 0 if all goes well, else appropriate error message |
| 608 | */ |
| 609 | int ti_sci_device_get_resets(uint32_t id, uint32_t *reset_state) |
| 610 | { |
| 611 | return ti_sci_device_get_state(id, NULL, reset_state, NULL, NULL); |
| 612 | } |
| 613 | |
| 614 | /** |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 615 | * ti_sci_clock_set_state() - Set clock state helper |
| 616 | * |
| 617 | * @dev_id: Device identifier this request is for |
| 618 | * @clk_id: Clock identifier for the device for this request, |
| 619 | * Each device has its own set of clock inputs, This indexes |
| 620 | * which clock input to modify |
| 621 | * @flags: Header flags as needed |
| 622 | * @state: State to request for the clock |
| 623 | * |
| 624 | * Return: 0 if all goes well, else appropriate error message |
| 625 | */ |
| 626 | int ti_sci_clock_set_state(uint32_t dev_id, uint8_t clk_id, |
| 627 | uint32_t flags, uint8_t state) |
| 628 | { |
| 629 | struct ti_sci_msg_req_set_clock_state req; |
| 630 | struct ti_sci_msg_hdr resp; |
| 631 | |
| 632 | struct ti_sci_xfer xfer; |
| 633 | int ret; |
| 634 | |
| 635 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_CLOCK_STATE, |
| 636 | flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 637 | &req, sizeof(req), |
| 638 | &resp, sizeof(resp), |
| 639 | &xfer); |
| 640 | if (ret) { |
| 641 | ERROR("Message alloc failed (%d)\n", ret); |
| 642 | return ret; |
| 643 | } |
| 644 | |
| 645 | req.dev_id = dev_id; |
| 646 | req.clk_id = clk_id; |
| 647 | req.request_state = state; |
| 648 | |
| 649 | ret = ti_sci_do_xfer(&xfer); |
| 650 | if (ret) { |
| 651 | ERROR("Transfer send failed (%d)\n", ret); |
| 652 | return ret; |
| 653 | } |
| 654 | |
| 655 | if (!ti_sci_is_response_ack(&resp)) |
| 656 | return -ENODEV; |
| 657 | |
| 658 | return 0; |
| 659 | } |
| 660 | |
| 661 | /** |
| 662 | * ti_sci_clock_get_state() - Get clock state helper |
| 663 | * |
| 664 | * @dev_id: Device identifier this request is for |
| 665 | * @clk_id: Clock identifier for the device for this request. |
| 666 | * Each device has its own set of clock inputs. This indexes |
| 667 | * which clock input to modify. |
| 668 | * @programmed_state: State requested for clock to move to |
| 669 | * @current_state: State that the clock is currently in |
| 670 | * |
| 671 | * Return: 0 if all goes well, else appropriate error message |
| 672 | */ |
| 673 | int ti_sci_clock_get_state(uint32_t dev_id, uint8_t clk_id, |
| 674 | uint8_t *programmed_state, |
| 675 | uint8_t *current_state) |
| 676 | { |
| 677 | struct ti_sci_msg_req_get_clock_state req; |
| 678 | struct ti_sci_msg_resp_get_clock_state resp; |
| 679 | |
| 680 | struct ti_sci_xfer xfer; |
| 681 | int ret; |
| 682 | |
| 683 | if (!programmed_state && !current_state) |
| 684 | return -EINVAL; |
| 685 | |
| 686 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_CLOCK_STATE, |
| 687 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 688 | &req, sizeof(req), |
| 689 | &resp, sizeof(resp), |
| 690 | &xfer); |
| 691 | if (ret) { |
| 692 | ERROR("Message alloc failed (%d)\n", ret); |
| 693 | return ret; |
| 694 | } |
| 695 | |
| 696 | req.dev_id = dev_id; |
| 697 | req.clk_id = clk_id; |
| 698 | |
| 699 | ret = ti_sci_do_xfer(&xfer); |
| 700 | if (ret) { |
| 701 | ERROR("Transfer send failed (%d)\n", ret); |
| 702 | return ret; |
| 703 | } |
| 704 | |
| 705 | if (!ti_sci_is_response_ack(&resp)) |
| 706 | return -ENODEV; |
| 707 | |
| 708 | if (programmed_state) |
| 709 | *programmed_state = resp.programmed_state; |
| 710 | if (current_state) |
| 711 | *current_state = resp.current_state; |
| 712 | |
| 713 | return 0; |
| 714 | } |
| 715 | |
| 716 | /** |
| 717 | * ti_sci_clock_get() - Get control of a clock from TI SCI |
| 718 | |
| 719 | * @dev_id: Device identifier this request is for |
| 720 | * @clk_id: Clock identifier for the device for this request. |
| 721 | * Each device has its own set of clock inputs. This indexes |
| 722 | * which clock input to modify. |
| 723 | * @needs_ssc: 'true' iff Spread Spectrum clock is desired |
| 724 | * @can_change_freq: 'true' iff frequency change is desired |
| 725 | * @enable_input_term: 'true' iff input termination is desired |
| 726 | * |
| 727 | * Return: 0 if all goes well, else appropriate error message |
| 728 | */ |
| 729 | int ti_sci_clock_get(uint32_t dev_id, uint8_t clk_id, |
| 730 | bool needs_ssc, bool can_change_freq, |
| 731 | bool enable_input_term) |
| 732 | { |
| 733 | uint32_t flags = 0; |
| 734 | |
| 735 | flags |= needs_ssc ? MSG_FLAG_CLOCK_ALLOW_SSC : 0; |
| 736 | flags |= can_change_freq ? MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE : 0; |
| 737 | flags |= enable_input_term ? MSG_FLAG_CLOCK_INPUT_TERM : 0; |
| 738 | |
| 739 | return ti_sci_clock_set_state(dev_id, clk_id, flags, |
| 740 | MSG_CLOCK_SW_STATE_REQ); |
| 741 | } |
| 742 | |
| 743 | /** |
| 744 | * ti_sci_clock_idle() - Idle a clock which is in our control |
| 745 | |
| 746 | * @dev_id: Device identifier this request is for |
| 747 | * @clk_id: Clock identifier for the device for this request. |
| 748 | * Each device has its own set of clock inputs. This indexes |
| 749 | * which clock input to modify. |
| 750 | * |
| 751 | * NOTE: This clock must have been requested by get_clock previously. |
| 752 | * |
| 753 | * Return: 0 if all goes well, else appropriate error message |
| 754 | */ |
| 755 | int ti_sci_clock_idle(uint32_t dev_id, uint8_t clk_id) |
| 756 | { |
| 757 | return ti_sci_clock_set_state(dev_id, clk_id, 0, |
| 758 | MSG_CLOCK_SW_STATE_UNREQ); |
| 759 | } |
| 760 | |
| 761 | /** |
| 762 | * ti_sci_clock_put() - Release a clock from our control |
| 763 | * |
| 764 | * @dev_id: Device identifier this request is for |
| 765 | * @clk_id: Clock identifier for the device for this request. |
| 766 | * Each device has its own set of clock inputs. This indexes |
| 767 | * which clock input to modify. |
| 768 | * |
| 769 | * NOTE: This clock must have been requested by get_clock previously. |
| 770 | * |
| 771 | * Return: 0 if all goes well, else appropriate error message |
| 772 | */ |
| 773 | int ti_sci_clock_put(uint32_t dev_id, uint8_t clk_id) |
| 774 | { |
| 775 | return ti_sci_clock_set_state(dev_id, clk_id, 0, |
| 776 | MSG_CLOCK_SW_STATE_AUTO); |
| 777 | } |
| 778 | |
| 779 | /** |
| 780 | * ti_sci_clock_is_auto() - Is the clock being auto managed |
| 781 | * |
| 782 | * @dev_id: Device identifier this request is for |
| 783 | * @clk_id: Clock identifier for the device for this request. |
| 784 | * Each device has its own set of clock inputs. This indexes |
| 785 | * which clock input to modify. |
| 786 | * @req_state: state indicating if the clock is auto managed |
| 787 | * |
| 788 | * Return: 0 if all goes well, else appropriate error message |
| 789 | */ |
| 790 | int ti_sci_clock_is_auto(uint32_t dev_id, uint8_t clk_id, bool *req_state) |
| 791 | { |
| 792 | uint8_t state = 0; |
| 793 | int ret; |
| 794 | |
| 795 | if (!req_state) |
| 796 | return -EINVAL; |
| 797 | |
| 798 | ret = ti_sci_clock_get_state(dev_id, clk_id, &state, NULL); |
| 799 | if (ret) |
| 800 | return ret; |
| 801 | |
| 802 | *req_state = (state == MSG_CLOCK_SW_STATE_AUTO); |
| 803 | |
| 804 | return 0; |
| 805 | } |
| 806 | |
| 807 | /** |
| 808 | * ti_sci_clock_is_on() - Is the clock ON |
| 809 | * |
| 810 | * @dev_id: Device identifier this request is for |
| 811 | * @clk_id: Clock identifier for the device for this request. |
| 812 | * Each device has its own set of clock inputs. This indexes |
| 813 | * which clock input to modify. |
| 814 | * @req_state: state indicating if the clock is managed by us and enabled |
| 815 | * @curr_state: state indicating if the clock is ready for operation |
| 816 | * |
| 817 | * Return: 0 if all goes well, else appropriate error message |
| 818 | */ |
| 819 | int ti_sci_clock_is_on(uint32_t dev_id, uint8_t clk_id, |
| 820 | bool *req_state, bool *curr_state) |
| 821 | { |
| 822 | uint8_t c_state = 0, r_state = 0; |
| 823 | int ret; |
| 824 | |
| 825 | if (!req_state && !curr_state) |
| 826 | return -EINVAL; |
| 827 | |
| 828 | ret = ti_sci_clock_get_state(dev_id, clk_id, &r_state, &c_state); |
| 829 | if (ret) |
| 830 | return ret; |
| 831 | |
| 832 | if (req_state) |
| 833 | *req_state = (r_state == MSG_CLOCK_SW_STATE_REQ); |
| 834 | if (curr_state) |
| 835 | *curr_state = (c_state == MSG_CLOCK_HW_STATE_READY); |
| 836 | |
| 837 | return 0; |
| 838 | } |
| 839 | |
| 840 | /** |
| 841 | * ti_sci_clock_is_off() - Is the clock OFF |
| 842 | * |
| 843 | * @dev_id: Device identifier this request is for |
| 844 | * @clk_id: Clock identifier for the device for this request. |
| 845 | * Each device has its own set of clock inputs. This indexes |
| 846 | * which clock input to modify. |
| 847 | * @req_state: state indicating if the clock is managed by us and disabled |
| 848 | * @curr_state: state indicating if the clock is NOT ready for operation |
| 849 | * |
| 850 | * Return: 0 if all goes well, else appropriate error message |
| 851 | */ |
| 852 | int ti_sci_clock_is_off(uint32_t dev_id, uint8_t clk_id, |
| 853 | bool *req_state, bool *curr_state) |
| 854 | { |
| 855 | uint8_t c_state = 0, r_state = 0; |
| 856 | int ret; |
| 857 | |
| 858 | if (!req_state && !curr_state) |
| 859 | return -EINVAL; |
| 860 | |
| 861 | ret = ti_sci_clock_get_state(dev_id, clk_id, &r_state, &c_state); |
| 862 | if (ret) |
| 863 | return ret; |
| 864 | |
| 865 | if (req_state) |
| 866 | *req_state = (r_state == MSG_CLOCK_SW_STATE_UNREQ); |
| 867 | if (curr_state) |
| 868 | *curr_state = (c_state == MSG_CLOCK_HW_STATE_NOT_READY); |
| 869 | |
| 870 | return 0; |
| 871 | } |
| 872 | |
| 873 | /** |
| 874 | * ti_sci_clock_set_parent() - Set the clock source of a specific device clock |
| 875 | * |
| 876 | * @dev_id: Device identifier this request is for |
| 877 | * @clk_id: Clock identifier for the device for this request. |
| 878 | * Each device has its own set of clock inputs. This indexes |
| 879 | * which clock input to modify. |
| 880 | * @parent_id: Parent clock identifier to set |
| 881 | * |
| 882 | * Return: 0 if all goes well, else appropriate error message |
| 883 | */ |
| 884 | int ti_sci_clock_set_parent(uint32_t dev_id, uint8_t clk_id, uint8_t parent_id) |
| 885 | { |
| 886 | struct ti_sci_msg_req_set_clock_parent req; |
| 887 | struct ti_sci_msg_hdr resp; |
| 888 | |
| 889 | struct ti_sci_xfer xfer; |
| 890 | int ret; |
| 891 | |
| 892 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_CLOCK_PARENT, |
| 893 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 894 | &req, sizeof(req), |
| 895 | &resp, sizeof(resp), |
| 896 | &xfer); |
| 897 | if (ret) { |
| 898 | ERROR("Message alloc failed (%d)\n", ret); |
| 899 | return ret; |
| 900 | } |
| 901 | |
| 902 | req.dev_id = dev_id; |
| 903 | req.clk_id = clk_id; |
| 904 | req.parent_id = parent_id; |
| 905 | |
| 906 | ret = ti_sci_do_xfer(&xfer); |
| 907 | if (ret) { |
| 908 | ERROR("Transfer send failed (%d)\n", ret); |
| 909 | return ret; |
| 910 | } |
| 911 | |
| 912 | if (!ti_sci_is_response_ack(&resp)) |
| 913 | return -ENODEV; |
| 914 | |
| 915 | return 0; |
| 916 | } |
| 917 | |
| 918 | /** |
| 919 | * ti_sci_clock_get_parent() - Get current parent clock source |
| 920 | * |
| 921 | * @dev_id: Device identifier this request is for |
| 922 | * @clk_id: Clock identifier for the device for this request. |
| 923 | * Each device has its own set of clock inputs. This indexes |
| 924 | * which clock input to modify. |
| 925 | * @parent_id: Current clock parent |
| 926 | * |
| 927 | * Return: 0 if all goes well, else appropriate error message |
| 928 | */ |
| 929 | int ti_sci_clock_get_parent(uint32_t dev_id, uint8_t clk_id, uint8_t *parent_id) |
| 930 | { |
| 931 | struct ti_sci_msg_req_get_clock_parent req; |
| 932 | struct ti_sci_msg_resp_get_clock_parent resp; |
| 933 | |
| 934 | struct ti_sci_xfer xfer; |
| 935 | int ret; |
| 936 | |
| 937 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_CLOCK_PARENT, |
| 938 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 939 | &req, sizeof(req), |
| 940 | &resp, sizeof(resp), |
| 941 | &xfer); |
| 942 | if (ret) { |
| 943 | ERROR("Message alloc failed (%d)\n", ret); |
| 944 | return ret; |
| 945 | } |
| 946 | |
| 947 | req.dev_id = dev_id; |
| 948 | req.clk_id = clk_id; |
| 949 | |
| 950 | ret = ti_sci_do_xfer(&xfer); |
| 951 | if (ret) { |
| 952 | ERROR("Transfer send failed (%d)\n", ret); |
| 953 | return ret; |
| 954 | } |
| 955 | |
| 956 | if (!ti_sci_is_response_ack(&resp)) |
| 957 | return -ENODEV; |
| 958 | |
| 959 | *parent_id = resp.parent_id; |
| 960 | |
| 961 | return 0; |
| 962 | } |
| 963 | |
| 964 | /** |
| 965 | * ti_sci_clock_get_num_parents() - Get num parents of the current clk source |
| 966 | * |
| 967 | * @dev_id: Device identifier this request is for |
| 968 | * @clk_id: Clock identifier for the device for this request. |
| 969 | * Each device has its own set of clock inputs. This indexes |
| 970 | * which clock input to modify. |
| 971 | * @num_parents: Returns he number of parents to the current clock. |
| 972 | * |
| 973 | * Return: 0 if all goes well, else appropriate error message |
| 974 | */ |
| 975 | int ti_sci_clock_get_num_parents(uint32_t dev_id, uint8_t clk_id, |
| 976 | uint8_t *num_parents) |
| 977 | { |
| 978 | struct ti_sci_msg_req_get_clock_num_parents req; |
| 979 | struct ti_sci_msg_resp_get_clock_num_parents resp; |
| 980 | |
| 981 | struct ti_sci_xfer xfer; |
| 982 | int ret; |
| 983 | |
| 984 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_NUM_CLOCK_PARENTS, |
| 985 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 986 | &req, sizeof(req), |
| 987 | &resp, sizeof(resp), |
| 988 | &xfer); |
| 989 | if (ret) { |
| 990 | ERROR("Message alloc failed (%d)\n", ret); |
| 991 | return ret; |
| 992 | } |
| 993 | |
| 994 | req.dev_id = dev_id; |
| 995 | req.clk_id = clk_id; |
| 996 | |
| 997 | ret = ti_sci_do_xfer(&xfer); |
| 998 | if (ret) { |
| 999 | ERROR("Transfer send failed (%d)\n", ret); |
| 1000 | return ret; |
| 1001 | } |
| 1002 | |
| 1003 | if (!ti_sci_is_response_ack(&resp)) |
| 1004 | return -ENODEV; |
| 1005 | |
| 1006 | *num_parents = resp.num_parents; |
| 1007 | |
| 1008 | return 0; |
| 1009 | } |
| 1010 | |
| 1011 | /** |
| 1012 | * ti_sci_clock_get_match_freq() - Find a good match for frequency |
| 1013 | * |
| 1014 | * @dev_id: Device identifier this request is for |
| 1015 | * @clk_id: Clock identifier for the device for this request. |
| 1016 | * Each device has its own set of clock inputs. This indexes |
| 1017 | * which clock input to modify. |
| 1018 | * @min_freq: The minimum allowable frequency in Hz. This is the minimum |
| 1019 | * allowable programmed frequency and does not account for clock |
| 1020 | * tolerances and jitter. |
| 1021 | * @target_freq: The target clock frequency in Hz. A frequency will be |
| 1022 | * processed as close to this target frequency as possible. |
| 1023 | * @max_freq: The maximum allowable frequency in Hz. This is the maximum |
| 1024 | * allowable programmed frequency and does not account for clock |
| 1025 | * tolerances and jitter. |
| 1026 | * @match_freq: Frequency match in Hz response. |
| 1027 | * |
| 1028 | * Return: 0 if all goes well, else appropriate error message |
| 1029 | */ |
| 1030 | int ti_sci_clock_get_match_freq(uint32_t dev_id, uint8_t clk_id, |
| 1031 | uint64_t min_freq, uint64_t target_freq, |
| 1032 | uint64_t max_freq, uint64_t *match_freq) |
| 1033 | { |
| 1034 | struct ti_sci_msg_req_query_clock_freq req; |
| 1035 | struct ti_sci_msg_resp_query_clock_freq resp; |
| 1036 | |
| 1037 | struct ti_sci_xfer xfer; |
| 1038 | int ret; |
| 1039 | |
| 1040 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_QUERY_CLOCK_FREQ, |
| 1041 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1042 | &req, sizeof(req), |
| 1043 | &resp, sizeof(resp), |
| 1044 | &xfer); |
| 1045 | if (ret) { |
| 1046 | ERROR("Message alloc failed (%d)\n", ret); |
| 1047 | return ret; |
| 1048 | } |
| 1049 | |
| 1050 | req.dev_id = dev_id; |
| 1051 | req.clk_id = clk_id; |
| 1052 | req.min_freq_hz = min_freq; |
| 1053 | req.target_freq_hz = target_freq; |
| 1054 | req.max_freq_hz = max_freq; |
| 1055 | |
| 1056 | ret = ti_sci_do_xfer(&xfer); |
| 1057 | if (ret) { |
| 1058 | ERROR("Transfer send failed (%d)\n", ret); |
| 1059 | return ret; |
| 1060 | } |
| 1061 | |
| 1062 | if (!ti_sci_is_response_ack(&resp)) |
| 1063 | return -ENODEV; |
| 1064 | |
| 1065 | *match_freq = resp.freq_hz; |
| 1066 | |
| 1067 | return 0; |
| 1068 | } |
| 1069 | |
| 1070 | /** |
| 1071 | * ti_sci_clock_set_freq() - Set a frequency for clock |
| 1072 | * |
| 1073 | * @dev_id: Device identifier this request is for |
| 1074 | * @clk_id: Clock identifier for the device for this request. |
| 1075 | * Each device has its own set of clock inputs. This indexes |
| 1076 | * which clock input to modify. |
| 1077 | * @min_freq: The minimum allowable frequency in Hz. This is the minimum |
| 1078 | * allowable programmed frequency and does not account for clock |
| 1079 | * tolerances and jitter. |
| 1080 | * @target_freq: The target clock frequency in Hz. A frequency will be |
| 1081 | * processed as close to this target frequency as possible. |
| 1082 | * @max_freq: The maximum allowable frequency in Hz. This is the maximum |
| 1083 | * allowable programmed frequency and does not account for clock |
| 1084 | * tolerances and jitter. |
| 1085 | * |
| 1086 | * Return: 0 if all goes well, else appropriate error message |
| 1087 | */ |
| 1088 | int ti_sci_clock_set_freq(uint32_t dev_id, uint8_t clk_id, uint64_t min_freq, |
| 1089 | uint64_t target_freq, uint64_t max_freq) |
| 1090 | { |
| 1091 | struct ti_sci_msg_req_set_clock_freq req; |
| 1092 | struct ti_sci_msg_hdr resp; |
| 1093 | |
| 1094 | struct ti_sci_xfer xfer; |
| 1095 | int ret; |
| 1096 | |
| 1097 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_CLOCK_FREQ, |
| 1098 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1099 | &req, sizeof(req), |
| 1100 | &resp, sizeof(resp), |
| 1101 | &xfer); |
| 1102 | if (ret) { |
| 1103 | ERROR("Message alloc failed (%d)\n", ret); |
| 1104 | return ret; |
| 1105 | } |
| 1106 | req.dev_id = dev_id; |
| 1107 | req.clk_id = clk_id; |
| 1108 | req.min_freq_hz = min_freq; |
| 1109 | req.target_freq_hz = target_freq; |
| 1110 | req.max_freq_hz = max_freq; |
| 1111 | |
| 1112 | ret = ti_sci_do_xfer(&xfer); |
| 1113 | if (ret) { |
| 1114 | ERROR("Transfer send failed (%d)\n", ret); |
| 1115 | return ret; |
| 1116 | } |
| 1117 | |
| 1118 | if (!ti_sci_is_response_ack(&resp)) |
| 1119 | return -ENODEV; |
| 1120 | |
| 1121 | return 0; |
| 1122 | } |
| 1123 | |
| 1124 | /** |
| 1125 | * ti_sci_clock_get_freq() - Get current frequency |
| 1126 | * |
| 1127 | * @dev_id: Device identifier this request is for |
| 1128 | * @clk_id: Clock identifier for the device for this request. |
| 1129 | * Each device has its own set of clock inputs. This indexes |
| 1130 | * which clock input to modify. |
| 1131 | * @freq: Currently frequency in Hz |
| 1132 | * |
| 1133 | * Return: 0 if all goes well, else appropriate error message |
| 1134 | */ |
| 1135 | int ti_sci_clock_get_freq(uint32_t dev_id, uint8_t clk_id, uint64_t *freq) |
| 1136 | { |
| 1137 | struct ti_sci_msg_req_get_clock_freq req; |
| 1138 | struct ti_sci_msg_resp_get_clock_freq resp; |
| 1139 | |
| 1140 | struct ti_sci_xfer xfer; |
| 1141 | int ret; |
| 1142 | |
| 1143 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_CLOCK_FREQ, |
| 1144 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1145 | &req, sizeof(req), |
| 1146 | &resp, sizeof(resp), |
| 1147 | &xfer); |
| 1148 | if (ret) { |
| 1149 | ERROR("Message alloc failed (%d)\n", ret); |
| 1150 | return ret; |
| 1151 | } |
| 1152 | |
| 1153 | req.dev_id = dev_id; |
| 1154 | req.clk_id = clk_id; |
| 1155 | |
| 1156 | ret = ti_sci_do_xfer(&xfer); |
| 1157 | if (ret) { |
| 1158 | ERROR("Transfer send failed (%d)\n", ret); |
| 1159 | return ret; |
| 1160 | } |
| 1161 | |
| 1162 | if (!ti_sci_is_response_ack(&resp)) |
| 1163 | return -ENODEV; |
| 1164 | |
| 1165 | *freq = resp.freq_hz; |
| 1166 | |
| 1167 | return 0; |
| 1168 | } |
| 1169 | |
| 1170 | /** |
Andrew F. Davis | 0d44930 | 2018-05-04 19:06:12 +0000 | [diff] [blame] | 1171 | * ti_sci_core_reboot() - Command to request system reset |
| 1172 | * |
| 1173 | * Return: 0 if all goes well, else appropriate error message |
| 1174 | */ |
| 1175 | int ti_sci_core_reboot(void) |
| 1176 | { |
| 1177 | struct ti_sci_msg_req_reboot req; |
| 1178 | struct ti_sci_msg_hdr resp; |
| 1179 | |
| 1180 | struct ti_sci_xfer xfer; |
| 1181 | int ret; |
| 1182 | |
| 1183 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SYS_RESET, |
| 1184 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1185 | &req, sizeof(req), |
| 1186 | &resp, sizeof(resp), |
| 1187 | &xfer); |
| 1188 | if (ret) { |
| 1189 | ERROR("Message alloc failed (%d)\n", ret); |
| 1190 | return ret; |
| 1191 | } |
| 1192 | |
| 1193 | ret = ti_sci_do_xfer(&xfer); |
| 1194 | if (ret) { |
| 1195 | ERROR("Transfer send failed (%d)\n", ret); |
| 1196 | return ret; |
| 1197 | } |
| 1198 | |
| 1199 | if (!ti_sci_is_response_ack(&resp)) |
| 1200 | return -ENODEV; |
| 1201 | |
| 1202 | return 0; |
| 1203 | } |
| 1204 | |
| 1205 | /** |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1206 | * ti_sci_proc_request() - Request a physical processor control |
| 1207 | * |
| 1208 | * @proc_id: Processor ID this request is for |
| 1209 | * |
| 1210 | * Return: 0 if all goes well, else appropriate error message |
| 1211 | */ |
| 1212 | int ti_sci_proc_request(uint8_t proc_id) |
| 1213 | { |
| 1214 | struct ti_sci_msg_req_proc_request req; |
| 1215 | struct ti_sci_msg_hdr resp; |
| 1216 | |
| 1217 | struct ti_sci_xfer xfer; |
| 1218 | int ret; |
| 1219 | |
| 1220 | ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_REQUEST, |
| 1221 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1222 | &req, sizeof(req), |
| 1223 | &resp, sizeof(resp), |
| 1224 | &xfer); |
| 1225 | if (ret) { |
| 1226 | ERROR("Message alloc failed (%d)\n", ret); |
| 1227 | return ret; |
| 1228 | } |
| 1229 | |
| 1230 | req.processor_id = proc_id; |
| 1231 | |
| 1232 | ret = ti_sci_do_xfer(&xfer); |
| 1233 | if (ret) { |
| 1234 | ERROR("Transfer send failed (%d)\n", ret); |
| 1235 | return ret; |
| 1236 | } |
| 1237 | |
| 1238 | if (!ti_sci_is_response_ack(&resp)) |
| 1239 | return -ENODEV; |
| 1240 | |
| 1241 | return 0; |
| 1242 | } |
| 1243 | |
| 1244 | /** |
| 1245 | * ti_sci_proc_release() - Release a physical processor control |
| 1246 | * |
| 1247 | * @proc_id: Processor ID this request is for |
| 1248 | * |
| 1249 | * Return: 0 if all goes well, else appropriate error message |
| 1250 | */ |
| 1251 | int ti_sci_proc_release(uint8_t proc_id) |
| 1252 | { |
| 1253 | struct ti_sci_msg_req_proc_release req; |
| 1254 | struct ti_sci_msg_hdr resp; |
| 1255 | |
| 1256 | struct ti_sci_xfer xfer; |
| 1257 | int ret; |
| 1258 | |
| 1259 | ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_RELEASE, |
| 1260 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1261 | &req, sizeof(req), |
| 1262 | &resp, sizeof(resp), |
| 1263 | &xfer); |
| 1264 | if (ret) { |
| 1265 | ERROR("Message alloc failed (%d)\n", ret); |
| 1266 | return ret; |
| 1267 | } |
| 1268 | |
| 1269 | req.processor_id = proc_id; |
| 1270 | |
| 1271 | ret = ti_sci_do_xfer(&xfer); |
| 1272 | if (ret) { |
| 1273 | ERROR("Transfer send failed (%d)\n", ret); |
| 1274 | return ret; |
| 1275 | } |
| 1276 | |
| 1277 | if (!ti_sci_is_response_ack(&resp)) |
| 1278 | return -ENODEV; |
| 1279 | |
| 1280 | return 0; |
| 1281 | } |
| 1282 | |
| 1283 | /** |
| 1284 | * ti_sci_proc_handover() - Handover a physical processor control to a host in |
| 1285 | * the processor's access control list. |
| 1286 | * |
| 1287 | * @proc_id: Processor ID this request is for |
| 1288 | * @host_id: Host ID to get the control of the processor |
| 1289 | * |
| 1290 | * Return: 0 if all goes well, else appropriate error message |
| 1291 | */ |
| 1292 | int ti_sci_proc_handover(uint8_t proc_id, uint8_t host_id) |
| 1293 | { |
| 1294 | struct ti_sci_msg_req_proc_handover req; |
| 1295 | struct ti_sci_msg_hdr resp; |
| 1296 | |
| 1297 | struct ti_sci_xfer xfer; |
| 1298 | int ret; |
| 1299 | |
| 1300 | ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_HANDOVER, |
| 1301 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1302 | &req, sizeof(req), |
| 1303 | &resp, sizeof(resp), |
| 1304 | &xfer); |
| 1305 | if (ret) { |
| 1306 | ERROR("Message alloc failed (%d)\n", ret); |
| 1307 | return ret; |
| 1308 | } |
| 1309 | |
| 1310 | req.processor_id = proc_id; |
| 1311 | req.host_id = host_id; |
| 1312 | |
| 1313 | ret = ti_sci_do_xfer(&xfer); |
| 1314 | if (ret) { |
| 1315 | ERROR("Transfer send failed (%d)\n", ret); |
| 1316 | return ret; |
| 1317 | } |
| 1318 | |
| 1319 | if (!ti_sci_is_response_ack(&resp)) |
| 1320 | return -ENODEV; |
| 1321 | |
| 1322 | return 0; |
| 1323 | } |
| 1324 | |
| 1325 | /** |
| 1326 | * ti_sci_proc_set_boot_cfg() - Set the processor boot configuration flags |
| 1327 | * |
| 1328 | * @proc_id: Processor ID this request is for |
| 1329 | * @config_flags_set: Configuration flags to be set |
| 1330 | * @config_flags_clear: Configuration flags to be cleared |
| 1331 | * |
| 1332 | * Return: 0 if all goes well, else appropriate error message |
| 1333 | */ |
| 1334 | int ti_sci_proc_set_boot_cfg(uint8_t proc_id, uint64_t bootvector, |
| 1335 | uint32_t config_flags_set, |
| 1336 | uint32_t config_flags_clear) |
| 1337 | { |
| 1338 | struct ti_sci_msg_req_set_proc_boot_config req; |
| 1339 | struct ti_sci_msg_hdr resp; |
| 1340 | |
| 1341 | struct ti_sci_xfer xfer; |
| 1342 | int ret; |
| 1343 | |
| 1344 | ret = ti_sci_setup_one_xfer(TISCI_MSG_SET_PROC_BOOT_CONFIG, |
| 1345 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1346 | &req, sizeof(req), |
| 1347 | &resp, sizeof(resp), |
| 1348 | &xfer); |
| 1349 | if (ret) { |
| 1350 | ERROR("Message alloc failed (%d)\n", ret); |
| 1351 | return ret; |
| 1352 | } |
| 1353 | |
| 1354 | req.processor_id = proc_id; |
| 1355 | req.bootvector_low = bootvector & TISCI_ADDR_LOW_MASK; |
| 1356 | req.bootvector_high = (bootvector & TISCI_ADDR_HIGH_MASK) >> |
| 1357 | TISCI_ADDR_HIGH_SHIFT; |
| 1358 | req.config_flags_set = config_flags_set; |
| 1359 | req.config_flags_clear = config_flags_clear; |
| 1360 | |
| 1361 | ret = ti_sci_do_xfer(&xfer); |
| 1362 | if (ret) { |
| 1363 | ERROR("Transfer send failed (%d)\n", ret); |
| 1364 | return ret; |
| 1365 | } |
| 1366 | |
| 1367 | if (!ti_sci_is_response_ack(&resp)) |
| 1368 | return -ENODEV; |
| 1369 | |
| 1370 | return 0; |
| 1371 | } |
| 1372 | |
| 1373 | /** |
| 1374 | * ti_sci_proc_set_boot_ctrl() - Set the processor boot control flags |
| 1375 | * |
| 1376 | * @proc_id: Processor ID this request is for |
| 1377 | * @control_flags_set: Control flags to be set |
| 1378 | * @control_flags_clear: Control flags to be cleared |
| 1379 | * |
| 1380 | * Return: 0 if all goes well, else appropriate error message |
| 1381 | */ |
| 1382 | int ti_sci_proc_set_boot_ctrl(uint8_t proc_id, uint32_t control_flags_set, |
| 1383 | uint32_t control_flags_clear) |
| 1384 | { |
| 1385 | struct ti_sci_msg_req_set_proc_boot_ctrl req; |
| 1386 | struct ti_sci_msg_hdr resp; |
| 1387 | |
| 1388 | struct ti_sci_xfer xfer; |
| 1389 | int ret; |
| 1390 | |
| 1391 | ret = ti_sci_setup_one_xfer(TISCI_MSG_SET_PROC_BOOT_CTRL, |
| 1392 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1393 | &req, sizeof(req), |
| 1394 | &resp, sizeof(resp), |
| 1395 | &xfer); |
| 1396 | if (ret) { |
| 1397 | ERROR("Message alloc failed (%d)\n", ret); |
| 1398 | return ret; |
| 1399 | } |
| 1400 | |
| 1401 | req.processor_id = proc_id; |
| 1402 | req.control_flags_set = control_flags_set; |
| 1403 | req.control_flags_clear = control_flags_clear; |
| 1404 | |
| 1405 | ret = ti_sci_do_xfer(&xfer); |
| 1406 | if (ret) { |
| 1407 | ERROR("Transfer send failed (%d)\n", ret); |
| 1408 | return ret; |
| 1409 | } |
| 1410 | |
| 1411 | if (!ti_sci_is_response_ack(&resp)) |
| 1412 | return -ENODEV; |
| 1413 | |
| 1414 | return 0; |
| 1415 | } |
| 1416 | |
| 1417 | /** |
| 1418 | * ti_sci_proc_auth_boot_image() - Authenticate and load image and then set the |
| 1419 | * processor configuration flags |
| 1420 | * |
| 1421 | * @proc_id: Processor ID this request is for |
| 1422 | * @cert_addr: Memory address at which payload image certificate is located |
| 1423 | * |
| 1424 | * Return: 0 if all goes well, else appropriate error message |
| 1425 | */ |
| 1426 | int ti_sci_proc_auth_boot_image(uint8_t proc_id, uint64_t cert_addr) |
| 1427 | { |
| 1428 | struct ti_sci_msg_req_proc_auth_boot_image req; |
| 1429 | struct ti_sci_msg_hdr resp; |
| 1430 | |
| 1431 | struct ti_sci_xfer xfer; |
| 1432 | int ret; |
| 1433 | |
| 1434 | ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_AUTH_BOOT_IMIAGE, |
| 1435 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1436 | &req, sizeof(req), |
| 1437 | &resp, sizeof(resp), |
| 1438 | &xfer); |
| 1439 | if (ret) { |
| 1440 | ERROR("Message alloc failed (%d)\n", ret); |
| 1441 | return ret; |
| 1442 | } |
| 1443 | |
| 1444 | req.processor_id = proc_id; |
| 1445 | req.cert_addr_low = cert_addr & TISCI_ADDR_LOW_MASK; |
| 1446 | req.cert_addr_high = (cert_addr & TISCI_ADDR_HIGH_MASK) >> |
| 1447 | TISCI_ADDR_HIGH_SHIFT; |
| 1448 | |
| 1449 | ret = ti_sci_do_xfer(&xfer); |
| 1450 | if (ret) { |
| 1451 | ERROR("Transfer send failed (%d)\n", ret); |
| 1452 | return ret; |
| 1453 | } |
| 1454 | |
| 1455 | if (!ti_sci_is_response_ack(&resp)) |
| 1456 | return -ENODEV; |
| 1457 | |
| 1458 | return 0; |
| 1459 | } |
| 1460 | |
| 1461 | /** |
| 1462 | * ti_sci_proc_get_boot_status() - Get the processor boot status |
| 1463 | * |
| 1464 | * @proc_id: Processor ID this request is for |
| 1465 | * |
| 1466 | * Return: 0 if all goes well, else appropriate error message |
| 1467 | */ |
| 1468 | int ti_sci_proc_get_boot_status(uint8_t proc_id, uint64_t *bv, |
| 1469 | uint32_t *cfg_flags, |
| 1470 | uint32_t *ctrl_flags, |
| 1471 | uint32_t *sts_flags) |
| 1472 | { |
| 1473 | struct ti_sci_msg_req_get_proc_boot_status req; |
| 1474 | struct ti_sci_msg_resp_get_proc_boot_status resp; |
| 1475 | |
| 1476 | struct ti_sci_xfer xfer; |
| 1477 | int ret; |
| 1478 | |
| 1479 | ret = ti_sci_setup_one_xfer(TISCI_MSG_GET_PROC_BOOT_STATUS, |
| 1480 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1481 | &req, sizeof(req), |
| 1482 | &resp, sizeof(resp), |
| 1483 | &xfer); |
| 1484 | if (ret) { |
| 1485 | ERROR("Message alloc failed (%d)\n", ret); |
| 1486 | return ret; |
| 1487 | } |
| 1488 | |
| 1489 | req.processor_id = proc_id; |
| 1490 | |
| 1491 | ret = ti_sci_do_xfer(&xfer); |
| 1492 | if (ret) { |
| 1493 | ERROR("Transfer send failed (%d)\n", ret); |
| 1494 | return ret; |
| 1495 | } |
| 1496 | |
| 1497 | if (!ti_sci_is_response_ack(&resp)) |
| 1498 | return -ENODEV; |
| 1499 | |
| 1500 | *bv = (resp.bootvector_low & TISCI_ADDR_LOW_MASK) | |
| 1501 | (((uint64_t)resp.bootvector_high << TISCI_ADDR_HIGH_SHIFT) & |
| 1502 | TISCI_ADDR_HIGH_MASK); |
| 1503 | *cfg_flags = resp.config_flags; |
| 1504 | *ctrl_flags = resp.control_flags; |
| 1505 | *sts_flags = resp.status_flags; |
| 1506 | |
| 1507 | return 0; |
| 1508 | } |
| 1509 | |
| 1510 | /** |
Andrew F. Davis | b62cc1e | 2018-12-18 13:21:12 -0600 | [diff] [blame] | 1511 | * ti_sci_proc_wait_boot_status() - Wait for a processor boot status |
| 1512 | * |
| 1513 | * @proc_id: Processor ID this request is for |
| 1514 | * @num_wait_iterations Total number of iterations we will check before |
| 1515 | * we will timeout and give up |
| 1516 | * @num_match_iterations How many iterations should we have continued |
| 1517 | * status to account for status bits glitching. |
| 1518 | * This is to make sure that match occurs for |
| 1519 | * consecutive checks. This implies that the |
| 1520 | * worst case should consider that the stable |
| 1521 | * time should at the worst be num_wait_iterations |
| 1522 | * num_match_iterations to prevent timeout. |
| 1523 | * @delay_per_iteration_us Specifies how long to wait (in micro seconds) |
| 1524 | * between each status checks. This is the minimum |
| 1525 | * duration, and overhead of register reads and |
| 1526 | * checks are on top of this and can vary based on |
| 1527 | * varied conditions. |
| 1528 | * @delay_before_iterations_us Specifies how long to wait (in micro seconds) |
| 1529 | * before the very first check in the first |
| 1530 | * iteration of status check loop. This is the |
| 1531 | * minimum duration, and overhead of register |
| 1532 | * reads and checks are. |
| 1533 | * @status_flags_1_set_all_wait If non-zero, Specifies that all bits of the |
| 1534 | * status matching this field requested MUST be 1. |
| 1535 | * @status_flags_1_set_any_wait If non-zero, Specifies that at least one of the |
| 1536 | * bits matching this field requested MUST be 1. |
| 1537 | * @status_flags_1_clr_all_wait If non-zero, Specifies that all bits of the |
| 1538 | * status matching this field requested MUST be 0. |
| 1539 | * @status_flags_1_clr_any_wait If non-zero, Specifies that at least one of the |
| 1540 | * bits matching this field requested MUST be 0. |
| 1541 | * |
| 1542 | * Return: 0 if all goes well, else appropriate error message |
| 1543 | */ |
| 1544 | int ti_sci_proc_wait_boot_status(uint8_t proc_id, uint8_t num_wait_iterations, |
| 1545 | uint8_t num_match_iterations, |
| 1546 | uint8_t delay_per_iteration_us, |
| 1547 | uint8_t delay_before_iterations_us, |
| 1548 | uint32_t status_flags_1_set_all_wait, |
| 1549 | uint32_t status_flags_1_set_any_wait, |
| 1550 | uint32_t status_flags_1_clr_all_wait, |
| 1551 | uint32_t status_flags_1_clr_any_wait) |
| 1552 | { |
| 1553 | struct ti_sci_msg_req_wait_proc_boot_status req; |
| 1554 | struct ti_sci_msg_hdr resp; |
| 1555 | |
| 1556 | struct ti_sci_xfer xfer; |
| 1557 | int ret; |
| 1558 | |
| 1559 | ret = ti_sci_setup_one_xfer(TISCI_MSG_WAIT_PROC_BOOT_STATUS, |
| 1560 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1561 | &req, sizeof(req), |
| 1562 | &resp, sizeof(resp), |
| 1563 | &xfer); |
| 1564 | if (ret) { |
| 1565 | ERROR("Message alloc failed (%d)\n", ret); |
| 1566 | return ret; |
| 1567 | } |
| 1568 | |
| 1569 | req.processor_id = proc_id; |
| 1570 | req.num_wait_iterations = num_wait_iterations; |
| 1571 | req.num_match_iterations = num_match_iterations; |
| 1572 | req.delay_per_iteration_us = delay_per_iteration_us; |
| 1573 | req.delay_before_iterations_us = delay_before_iterations_us; |
| 1574 | req.status_flags_1_set_all_wait = status_flags_1_set_all_wait; |
| 1575 | req.status_flags_1_set_any_wait = status_flags_1_set_any_wait; |
| 1576 | req.status_flags_1_clr_all_wait = status_flags_1_clr_all_wait; |
| 1577 | req.status_flags_1_clr_any_wait = status_flags_1_clr_any_wait; |
| 1578 | |
| 1579 | ret = ti_sci_do_xfer(&xfer); |
| 1580 | if (ret) { |
| 1581 | ERROR("Transfer send failed (%d)\n", ret); |
| 1582 | return ret; |
| 1583 | } |
| 1584 | |
| 1585 | if (!ti_sci_is_response_ack(&resp)) |
| 1586 | return -ENODEV; |
| 1587 | |
| 1588 | return 0; |
| 1589 | } |
| 1590 | |
| 1591 | /** |
Andrew F. Davis | ed8a4f8 | 2019-01-03 13:23:52 -0600 | [diff] [blame] | 1592 | * ti_sci_proc_shutdown() - Shutdown Processor without waiting for ACKs |
| 1593 | * |
| 1594 | * @proc_id: Processor ID this request is for |
| 1595 | * @dev_id: Device identifier this request is for |
| 1596 | * |
| 1597 | * Return: 0 if all goes well, else appropriate error message |
| 1598 | */ |
| 1599 | int ti_sci_proc_shutdown(uint8_t proc_id, uint32_t dev_id) |
| 1600 | { |
| 1601 | struct ti_sci_msg_req_wait_proc_boot_status wait_req; |
| 1602 | struct ti_sci_msg_req_set_device_state set_req; |
| 1603 | /* |
| 1604 | * We will not be waiting for this response, but declare one anyway |
| 1605 | * to pass to the setup function so the checks will still pass |
| 1606 | */ |
| 1607 | struct ti_sci_msg_hdr resp; |
| 1608 | |
| 1609 | struct ti_sci_xfer xfer; |
| 1610 | int ret; |
| 1611 | |
| 1612 | /* Start by sending wait command */ |
| 1613 | |
| 1614 | /* Setup with NORESPONSE flag to keep response queue clean */ |
| 1615 | ret = ti_sci_setup_one_xfer(TISCI_MSG_WAIT_PROC_BOOT_STATUS, |
| 1616 | TI_SCI_FLAG_REQ_GENERIC_NORESPONSE, |
| 1617 | &wait_req, sizeof(wait_req), |
| 1618 | &resp, sizeof(resp), |
| 1619 | &xfer); |
| 1620 | if (ret) { |
| 1621 | ERROR("Message alloc failed (%d)\n", ret); |
| 1622 | return ret; |
| 1623 | } |
| 1624 | |
| 1625 | wait_req.processor_id = proc_id; |
| 1626 | /* |
| 1627 | * Wait maximum time to give us the best chance to get |
| 1628 | * to WFI before this command timeouts |
| 1629 | */ |
| 1630 | wait_req.delay_before_iterations_us = UINT8_MAX; |
| 1631 | wait_req.num_wait_iterations = UINT8_MAX; |
| 1632 | wait_req.delay_per_iteration_us = UINT8_MAX; /* TODO: optimize time */ |
| 1633 | wait_req.num_match_iterations = 2; |
| 1634 | wait_req.status_flags_1_set_all_wait = 0; |
| 1635 | /* Wait for either WFE or WFI */ |
| 1636 | wait_req.status_flags_1_set_any_wait = PROC_BOOT_STATUS_FLAG_ARMV8_WFE | |
| 1637 | PROC_BOOT_STATUS_FLAG_ARMV8_WFI; |
| 1638 | wait_req.status_flags_1_clr_all_wait = 0; |
| 1639 | wait_req.status_flags_1_clr_any_wait = 0; |
| 1640 | |
| 1641 | /* Send wait message */ |
| 1642 | ret = k3_sec_proxy_send(SP_HIGH_PRIORITY, &xfer.tx_message); |
| 1643 | if (ret) { |
| 1644 | ERROR("Message sending failed (%d)\n", ret); |
| 1645 | return ret; |
| 1646 | } |
| 1647 | |
| 1648 | /* Now queue up the shutdown request */ |
| 1649 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_DEVICE_STATE, |
| 1650 | TI_SCI_FLAG_REQ_GENERIC_NORESPONSE, |
| 1651 | &set_req, sizeof(set_req), |
| 1652 | &resp, sizeof(resp), |
| 1653 | &xfer); |
| 1654 | if (ret) { |
| 1655 | ERROR("Message alloc failed (%d)\n", ret); |
| 1656 | return ret; |
| 1657 | } |
| 1658 | |
| 1659 | set_req.id = dev_id; |
| 1660 | set_req.state = MSG_DEVICE_SW_STATE_AUTO_OFF; |
| 1661 | |
| 1662 | /* Send shutdown message */ |
| 1663 | ret = k3_sec_proxy_send(SP_HIGH_PRIORITY, &xfer.tx_message); |
| 1664 | if (ret) { |
| 1665 | ERROR("Message sending failed (%d)\n", ret); |
| 1666 | return ret; |
| 1667 | } |
| 1668 | |
| 1669 | /* Return without waiting for responses */ |
| 1670 | return 0; |
| 1671 | } |
| 1672 | |
| 1673 | /** |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 1674 | * ti_sci_init() - Basic initialization |
| 1675 | * |
| 1676 | * Return: 0 if all goes well, else appropriate error message |
| 1677 | */ |
| 1678 | int ti_sci_init(void) |
| 1679 | { |
| 1680 | struct ti_sci_msg_resp_version rev_info; |
| 1681 | int ret; |
| 1682 | |
| 1683 | ret = ti_sci_get_revision(&rev_info); |
| 1684 | if (ret) { |
| 1685 | ERROR("Unable to communicate with control firmware (%d)\n", ret); |
| 1686 | return ret; |
| 1687 | } |
| 1688 | |
| 1689 | INFO("SYSFW ABI: %d.%d (firmware rev 0x%04x '%s')\n", |
| 1690 | rev_info.abi_major, rev_info.abi_minor, |
| 1691 | rev_info.firmware_revision, |
| 1692 | rev_info.firmware_description); |
| 1693 | |
| 1694 | return 0; |
| 1695 | } |