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 | * |
Dave Gerlach | 7a94ce8 | 2021-11-30 15:35:08 -0600 | [diff] [blame] | 5 | * Copyright (C) 2018-2022 Texas Instruments Incorporated - https://www.ti.com/ |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 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> |
Andrew Davis | 617d035 | 2023-03-13 13:56:27 -0500 | [diff] [blame] | 16 | #include <lib/bakery_lock.h> |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 17 | |
| 18 | #include <common/debug.h> |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 19 | #include <sec_proxy.h> |
| 20 | |
| 21 | #include "ti_sci_protocol.h" |
| 22 | #include "ti_sci.h" |
| 23 | |
Andrew F. Davis | e1bcbd4 | 2020-01-16 15:58:34 -0600 | [diff] [blame] | 24 | #if USE_COHERENT_MEM |
Chris Kay | 33bfc5e | 2023-02-14 11:30:04 +0000 | [diff] [blame] | 25 | __section(".tzfw_coherent_mem") |
Andrew F. Davis | e1bcbd4 | 2020-01-16 15:58:34 -0600 | [diff] [blame] | 26 | #endif |
Andrew F. Davis | 5daafa1 | 2020-01-16 15:34:31 -0600 | [diff] [blame] | 27 | static uint8_t message_sequence; |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 28 | |
Andrew Davis | 617d035 | 2023-03-13 13:56:27 -0500 | [diff] [blame] | 29 | DEFINE_BAKERY_LOCK(ti_sci_xfer_lock); |
| 30 | |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 31 | /** |
| 32 | * struct ti_sci_xfer - Structure representing a message flow |
| 33 | * @tx_message: Transmit message |
| 34 | * @rx_message: Receive message |
| 35 | */ |
| 36 | struct ti_sci_xfer { |
| 37 | struct k3_sec_proxy_msg tx_message; |
| 38 | struct k3_sec_proxy_msg rx_message; |
| 39 | }; |
| 40 | |
| 41 | /** |
| 42 | * ti_sci_setup_one_xfer() - Setup one message type |
| 43 | * |
| 44 | * @msg_type: Message type |
| 45 | * @msg_flags: Flag to set for the message |
| 46 | * @tx_buf: Buffer to be sent to mailbox channel |
| 47 | * @tx_message_size: transmit message size |
| 48 | * @rx_buf: Buffer to be received from mailbox channel |
| 49 | * @rx_message_size: receive message size |
| 50 | * |
| 51 | * Helper function which is used by various command functions that are |
| 52 | * exposed to clients of this driver for allocating a message traffic event. |
| 53 | * |
| 54 | * Return: 0 if all goes well, else appropriate error message |
| 55 | */ |
| 56 | static int ti_sci_setup_one_xfer(uint16_t msg_type, uint32_t msg_flags, |
| 57 | void *tx_buf, |
| 58 | size_t tx_message_size, |
| 59 | void *rx_buf, |
| 60 | size_t rx_message_size, |
| 61 | struct ti_sci_xfer *xfer) |
| 62 | { |
| 63 | struct ti_sci_msg_hdr *hdr; |
| 64 | |
| 65 | /* Ensure we have sane transfer sizes */ |
Andrew F. Davis | 5daafa1 | 2020-01-16 15:34:31 -0600 | [diff] [blame] | 66 | if (rx_message_size > TI_SCI_MAX_MESSAGE_SIZE || |
| 67 | tx_message_size > TI_SCI_MAX_MESSAGE_SIZE || |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 68 | tx_message_size < sizeof(*hdr)) |
| 69 | return -ERANGE; |
| 70 | |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 71 | hdr = (struct ti_sci_msg_hdr *)tx_buf; |
Andrew F. Davis | 5daafa1 | 2020-01-16 15:34:31 -0600 | [diff] [blame] | 72 | hdr->seq = ++message_sequence; |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 73 | hdr->type = msg_type; |
Andrew F. Davis | 5daafa1 | 2020-01-16 15:34:31 -0600 | [diff] [blame] | 74 | hdr->host = TI_SCI_HOST_ID; |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 75 | hdr->flags = msg_flags; |
| 76 | /* Request a response if rx_message_size is non-zero */ |
| 77 | if (rx_message_size != 0U) { |
| 78 | hdr->flags |= TI_SCI_FLAG_REQ_ACK_ON_PROCESSED; |
| 79 | } |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 80 | |
| 81 | xfer->tx_message.buf = tx_buf; |
| 82 | xfer->tx_message.len = tx_message_size; |
| 83 | |
| 84 | xfer->rx_message.buf = rx_buf; |
| 85 | xfer->rx_message.len = rx_message_size; |
| 86 | |
| 87 | return 0; |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * ti_sci_get_response() - Receive response from mailbox channel |
| 92 | * |
| 93 | * @xfer: Transfer to initiate and wait for response |
| 94 | * @chan: Channel to receive the response |
| 95 | * |
| 96 | * Return: 0 if all goes well, else appropriate error message |
| 97 | */ |
Andrew Davis | 817bdbb | 2022-11-11 12:49:38 -0600 | [diff] [blame] | 98 | static int ti_sci_get_response(struct k3_sec_proxy_msg *msg, |
| 99 | enum k3_sec_proxy_chan_id chan) |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 100 | { |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 101 | struct ti_sci_msg_hdr *hdr; |
Andrew F. Davis | dff1182 | 2019-04-10 12:40:12 -0400 | [diff] [blame] | 102 | unsigned int retry = 5; |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 103 | int ret; |
| 104 | |
Andrew F. Davis | dff1182 | 2019-04-10 12:40:12 -0400 | [diff] [blame] | 105 | for (; retry > 0; retry--) { |
| 106 | /* Receive the response */ |
| 107 | ret = k3_sec_proxy_recv(chan, msg); |
| 108 | if (ret) { |
| 109 | ERROR("Message receive failed (%d)\n", ret); |
| 110 | return ret; |
| 111 | } |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 112 | |
Andrew F. Davis | dff1182 | 2019-04-10 12:40:12 -0400 | [diff] [blame] | 113 | /* msg is updated by Secure Proxy driver */ |
| 114 | hdr = (struct ti_sci_msg_hdr *)msg->buf; |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 115 | |
Andrew F. Davis | dff1182 | 2019-04-10 12:40:12 -0400 | [diff] [blame] | 116 | /* Sanity check for message response */ |
Andrew F. Davis | 5daafa1 | 2020-01-16 15:34:31 -0600 | [diff] [blame] | 117 | if (hdr->seq == message_sequence) |
Andrew F. Davis | dff1182 | 2019-04-10 12:40:12 -0400 | [diff] [blame] | 118 | break; |
| 119 | else |
| 120 | WARN("Message with sequence ID %u is not expected\n", hdr->seq); |
| 121 | } |
| 122 | if (!retry) { |
| 123 | ERROR("Timed out waiting for message\n"); |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 124 | return -EINVAL; |
| 125 | } |
| 126 | |
Andrew F. Davis | 5daafa1 | 2020-01-16 15:34:31 -0600 | [diff] [blame] | 127 | if (msg->len > TI_SCI_MAX_MESSAGE_SIZE) { |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 128 | ERROR("Unable to handle %lu xfer (max %d)\n", |
Andrew F. Davis | 5daafa1 | 2020-01-16 15:34:31 -0600 | [diff] [blame] | 129 | msg->len, TI_SCI_MAX_MESSAGE_SIZE); |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 130 | return -EINVAL; |
| 131 | } |
| 132 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 133 | if (!(hdr->flags & TI_SCI_FLAG_RESP_GENERIC_ACK)) |
| 134 | return -ENODEV; |
| 135 | |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 136 | return 0; |
| 137 | } |
| 138 | |
| 139 | /** |
| 140 | * ti_sci_do_xfer() - Do one transfer |
| 141 | * |
| 142 | * @xfer: Transfer to initiate and wait for response |
| 143 | * |
| 144 | * Return: 0 if all goes well, else appropriate error message |
| 145 | */ |
Andrew Davis | 817bdbb | 2022-11-11 12:49:38 -0600 | [diff] [blame] | 146 | static int ti_sci_do_xfer(struct ti_sci_xfer *xfer) |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 147 | { |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 148 | struct k3_sec_proxy_msg *tx_msg = &xfer->tx_message; |
| 149 | struct k3_sec_proxy_msg *rx_msg = &xfer->rx_message; |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 150 | int ret; |
| 151 | |
Andrew Davis | 617d035 | 2023-03-13 13:56:27 -0500 | [diff] [blame] | 152 | bakery_lock_get(&ti_sci_xfer_lock); |
| 153 | |
Andrew F. Davis | 18d371d | 2019-01-04 12:49:16 -0600 | [diff] [blame] | 154 | /* Clear any spurious messages in receive queue */ |
| 155 | ret = k3_sec_proxy_clear_rx_thread(SP_RESPONSE); |
| 156 | if (ret) { |
| 157 | ERROR("Could not clear response queue (%d)\n", ret); |
| 158 | return ret; |
| 159 | } |
| 160 | |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 161 | /* Send the message */ |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 162 | ret = k3_sec_proxy_send(SP_HIGH_PRIORITY, tx_msg); |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 163 | if (ret) { |
| 164 | ERROR("Message sending failed (%d)\n", ret); |
| 165 | return ret; |
| 166 | } |
| 167 | |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 168 | /* Get the response if requested */ |
| 169 | if (rx_msg->len != 0U) { |
| 170 | ret = ti_sci_get_response(rx_msg, SP_RESPONSE); |
| 171 | if (ret != 0U) { |
| 172 | ERROR("Failed to get response (%d)\n", ret); |
| 173 | return ret; |
| 174 | } |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 175 | } |
| 176 | |
Andrew Davis | 617d035 | 2023-03-13 13:56:27 -0500 | [diff] [blame] | 177 | bakery_lock_release(&ti_sci_xfer_lock); |
| 178 | |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 179 | return 0; |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * ti_sci_get_revision() - Get the revision of the SCI entity |
| 184 | * |
| 185 | * Updates the SCI information in the internal data structure. |
| 186 | * |
| 187 | * Return: 0 if all goes well, else appropriate error message |
| 188 | */ |
| 189 | int ti_sci_get_revision(struct ti_sci_msg_resp_version *rev_info) |
| 190 | { |
| 191 | struct ti_sci_msg_hdr hdr; |
| 192 | struct ti_sci_xfer xfer; |
| 193 | int ret; |
| 194 | |
| 195 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_VERSION, 0x0, |
| 196 | &hdr, sizeof(hdr), |
| 197 | rev_info, sizeof(*rev_info), |
| 198 | &xfer); |
| 199 | if (ret) { |
| 200 | ERROR("Message alloc failed (%d)\n", ret); |
| 201 | return ret; |
| 202 | } |
| 203 | |
| 204 | ret = ti_sci_do_xfer(&xfer); |
| 205 | if (ret) { |
| 206 | ERROR("Transfer send failed (%d)\n", ret); |
| 207 | return ret; |
| 208 | } |
| 209 | |
| 210 | return 0; |
| 211 | } |
| 212 | |
| 213 | /** |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 214 | * ti_sci_device_set_state() - Set device state |
| 215 | * |
| 216 | * @id: Device identifier |
| 217 | * @flags: flags to setup for the device |
| 218 | * @state: State to move the device to |
| 219 | * |
| 220 | * Return: 0 if all goes well, else appropriate error message |
| 221 | */ |
Andrew F. Davis | 8335bc2 | 2019-02-11 12:55:25 -0600 | [diff] [blame] | 222 | 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] | 223 | { |
| 224 | struct ti_sci_msg_req_set_device_state req; |
| 225 | struct ti_sci_msg_hdr resp; |
| 226 | |
| 227 | struct ti_sci_xfer xfer; |
| 228 | int ret; |
| 229 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 230 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_DEVICE_STATE, flags, |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 231 | &req, sizeof(req), |
| 232 | &resp, sizeof(resp), |
| 233 | &xfer); |
| 234 | if (ret) { |
| 235 | ERROR("Message alloc failed (%d)\n", ret); |
| 236 | return ret; |
| 237 | } |
| 238 | |
| 239 | req.id = id; |
| 240 | req.state = state; |
| 241 | |
| 242 | ret = ti_sci_do_xfer(&xfer); |
| 243 | if (ret) { |
| 244 | ERROR("Transfer send failed (%d)\n", ret); |
| 245 | return ret; |
| 246 | } |
| 247 | |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 248 | return 0; |
| 249 | } |
| 250 | |
| 251 | /** |
| 252 | * ti_sci_device_get_state() - Get device state |
| 253 | * |
| 254 | * @id: Device Identifier |
| 255 | * @clcnt: Pointer to Context Loss Count |
| 256 | * @resets: pointer to resets |
| 257 | * @p_state: pointer to p_state |
| 258 | * @c_state: pointer to c_state |
| 259 | * |
| 260 | * Return: 0 if all goes well, else appropriate error message |
| 261 | */ |
Andrew F. Davis | 8335bc2 | 2019-02-11 12:55:25 -0600 | [diff] [blame] | 262 | static int ti_sci_device_get_state(uint32_t id, uint32_t *clcnt, |
| 263 | uint32_t *resets, uint8_t *p_state, |
| 264 | uint8_t *c_state) |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 265 | { |
| 266 | struct ti_sci_msg_req_get_device_state req; |
| 267 | struct ti_sci_msg_resp_get_device_state resp; |
| 268 | |
| 269 | struct ti_sci_xfer xfer; |
| 270 | int ret; |
| 271 | |
| 272 | if (!clcnt && !resets && !p_state && !c_state) |
| 273 | return -EINVAL; |
| 274 | |
| 275 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_DEVICE_STATE, 0, |
| 276 | &req, sizeof(req), |
| 277 | &resp, sizeof(resp), |
| 278 | &xfer); |
| 279 | if (ret) { |
| 280 | ERROR("Message alloc failed (%d)\n", ret); |
| 281 | return ret; |
| 282 | } |
| 283 | |
| 284 | req.id = id; |
| 285 | |
| 286 | ret = ti_sci_do_xfer(&xfer); |
| 287 | if (ret) { |
| 288 | ERROR("Transfer send failed (%d)\n", ret); |
| 289 | return ret; |
| 290 | } |
| 291 | |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 292 | if (clcnt) |
| 293 | *clcnt = resp.context_loss_count; |
| 294 | if (resets) |
| 295 | *resets = resp.resets; |
| 296 | if (p_state) |
| 297 | *p_state = resp.programmed_state; |
| 298 | if (c_state) |
| 299 | *c_state = resp.current_state; |
| 300 | |
| 301 | return 0; |
| 302 | } |
| 303 | |
| 304 | /** |
| 305 | * ti_sci_device_get() - Request for device managed by TISCI |
| 306 | * |
| 307 | * @id: Device Identifier |
| 308 | * |
| 309 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 310 | * usage count by balancing get_device with put_device. No refcounting is |
| 311 | * managed by driver for that purpose. |
| 312 | * |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 313 | * Return: 0 if all goes well, else appropriate error message |
| 314 | */ |
| 315 | int ti_sci_device_get(uint32_t id) |
| 316 | { |
Andrew F. Davis | fbe6c06 | 2019-02-11 12:58:32 -0600 | [diff] [blame] | 317 | return ti_sci_device_set_state(id, 0, MSG_DEVICE_SW_STATE_ON); |
| 318 | } |
| 319 | |
| 320 | /** |
| 321 | * ti_sci_device_get_exclusive() - Exclusive request for device managed by TISCI |
| 322 | * |
| 323 | * @id: Device Identifier |
| 324 | * |
| 325 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 326 | * usage count by balancing get_device with put_device. No refcounting is |
| 327 | * managed by driver for that purpose. |
| 328 | * |
| 329 | * NOTE: This _exclusive version of the get API is for exclusive access to the |
| 330 | * device. Any other host in the system will fail to get this device after this |
| 331 | * call until exclusive access is released with device_put or a non-exclusive |
| 332 | * set call. |
| 333 | * |
| 334 | * Return: 0 if all goes well, else appropriate error message |
| 335 | */ |
| 336 | int ti_sci_device_get_exclusive(uint32_t id) |
| 337 | { |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 338 | return ti_sci_device_set_state(id, |
| 339 | MSG_FLAG_DEVICE_EXCLUSIVE, |
| 340 | MSG_DEVICE_SW_STATE_ON); |
| 341 | } |
| 342 | |
| 343 | /** |
| 344 | * ti_sci_device_idle() - Idle a device managed by TISCI |
| 345 | * |
| 346 | * @id: Device Identifier |
| 347 | * |
| 348 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 349 | * usage count by balancing get_device with put_device. No refcounting is |
| 350 | * managed by driver for that purpose. |
| 351 | * |
| 352 | * Return: 0 if all goes well, else appropriate error message |
| 353 | */ |
| 354 | int ti_sci_device_idle(uint32_t id) |
| 355 | { |
Andrew F. Davis | fbe6c06 | 2019-02-11 12:58:32 -0600 | [diff] [blame] | 356 | return ti_sci_device_set_state(id, 0, MSG_DEVICE_SW_STATE_RETENTION); |
| 357 | } |
| 358 | |
| 359 | /** |
| 360 | * ti_sci_device_idle_exclusive() - Exclusive idle a device managed by TISCI |
| 361 | * |
| 362 | * @id: Device Identifier |
| 363 | * |
| 364 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 365 | * usage count by balancing get_device with put_device. No refcounting is |
| 366 | * managed by driver for that purpose. |
| 367 | * |
| 368 | * NOTE: This _exclusive version of the idle API is for exclusive access to |
| 369 | * the device. Any other host in the system will fail to get this device after |
| 370 | * this call until exclusive access is released with device_put or a |
| 371 | * non-exclusive set call. |
| 372 | * |
| 373 | * Return: 0 if all goes well, else appropriate error message |
| 374 | */ |
| 375 | int ti_sci_device_idle_exclusive(uint32_t id) |
| 376 | { |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 377 | return ti_sci_device_set_state(id, |
| 378 | MSG_FLAG_DEVICE_EXCLUSIVE, |
| 379 | MSG_DEVICE_SW_STATE_RETENTION); |
| 380 | } |
| 381 | |
| 382 | /** |
| 383 | * ti_sci_device_put() - Release a device managed by TISCI |
| 384 | * |
| 385 | * @id: Device Identifier |
| 386 | * |
| 387 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 388 | * usage count by balancing get_device with put_device. No refcounting is |
| 389 | * managed by driver for that purpose. |
| 390 | * |
| 391 | * Return: 0 if all goes well, else appropriate error message |
| 392 | */ |
| 393 | int ti_sci_device_put(uint32_t id) |
| 394 | { |
| 395 | return ti_sci_device_set_state(id, 0, MSG_DEVICE_SW_STATE_AUTO_OFF); |
| 396 | } |
| 397 | |
| 398 | /** |
Andrew F. Davis | a29578d | 2019-02-11 14:18:53 -0600 | [diff] [blame] | 399 | * ti_sci_device_put_no_wait() - Release a device without requesting or waiting |
| 400 | * for a response. |
| 401 | * |
| 402 | * @id: Device Identifier |
| 403 | * |
| 404 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 405 | * usage count by balancing get_device with put_device. No refcounting is |
| 406 | * managed by driver for that purpose. |
| 407 | * |
| 408 | * Return: 0 if all goes well, else appropriate error message |
| 409 | */ |
| 410 | int ti_sci_device_put_no_wait(uint32_t id) |
| 411 | { |
| 412 | struct ti_sci_msg_req_set_device_state req; |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 413 | struct ti_sci_xfer xfer; |
Andrew F. Davis | a29578d | 2019-02-11 14:18:53 -0600 | [diff] [blame] | 414 | int ret; |
| 415 | |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 416 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_DEVICE_STATE, 0, |
| 417 | &req, sizeof(req), |
| 418 | NULL, 0, |
| 419 | &xfer); |
| 420 | if (ret != 0U) { |
| 421 | ERROR("Message alloc failed (%d)\n", ret); |
| 422 | return ret; |
| 423 | } |
Andrew F. Davis | a29578d | 2019-02-11 14:18:53 -0600 | [diff] [blame] | 424 | |
| 425 | req.id = id; |
| 426 | req.state = MSG_DEVICE_SW_STATE_AUTO_OFF; |
| 427 | |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 428 | ret = ti_sci_do_xfer(&xfer); |
| 429 | if (ret != 0U) { |
| 430 | ERROR("Transfer send failed (%d)\n", ret); |
Andrew F. Davis | a29578d | 2019-02-11 14:18:53 -0600 | [diff] [blame] | 431 | return ret; |
| 432 | } |
| 433 | |
Andrew F. Davis | a29578d | 2019-02-11 14:18:53 -0600 | [diff] [blame] | 434 | return 0; |
| 435 | } |
| 436 | |
| 437 | /** |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 438 | * ti_sci_device_is_valid() - Is the device valid |
| 439 | * |
| 440 | * @id: Device Identifier |
| 441 | * |
| 442 | * Return: 0 if all goes well and the device ID is valid, else return |
| 443 | * appropriate error |
| 444 | */ |
| 445 | int ti_sci_device_is_valid(uint32_t id) |
| 446 | { |
| 447 | uint8_t unused; |
| 448 | |
| 449 | /* check the device state which will also tell us if the ID is valid */ |
| 450 | return ti_sci_device_get_state(id, NULL, NULL, NULL, &unused); |
| 451 | } |
| 452 | |
| 453 | /** |
| 454 | * ti_sci_device_get_clcnt() - Get context loss counter |
| 455 | * |
| 456 | * @id: Device Identifier |
| 457 | * @count: Pointer to Context Loss counter to populate |
| 458 | * |
| 459 | * Return: 0 if all goes well, else appropriate error message |
| 460 | */ |
| 461 | int ti_sci_device_get_clcnt(uint32_t id, uint32_t *count) |
| 462 | { |
| 463 | return ti_sci_device_get_state(id, count, NULL, NULL, NULL); |
| 464 | } |
| 465 | |
| 466 | /** |
| 467 | * ti_sci_device_is_idle() - Check if the device is requested to be idle |
| 468 | * |
| 469 | * @id: Device Identifier |
| 470 | * @r_state: true if requested to be idle |
| 471 | * |
| 472 | * Return: 0 if all goes well, else appropriate error message |
| 473 | */ |
| 474 | int ti_sci_device_is_idle(uint32_t id, bool *r_state) |
| 475 | { |
| 476 | int ret; |
| 477 | uint8_t state; |
| 478 | |
| 479 | if (!r_state) |
| 480 | return -EINVAL; |
| 481 | |
| 482 | ret = ti_sci_device_get_state(id, NULL, NULL, &state, NULL); |
| 483 | if (ret) |
| 484 | return ret; |
| 485 | |
| 486 | *r_state = (state == MSG_DEVICE_SW_STATE_RETENTION); |
| 487 | |
| 488 | return 0; |
| 489 | } |
| 490 | |
| 491 | /** |
| 492 | * ti_sci_device_is_stop() - Check if the device is requested to be stopped |
| 493 | * |
| 494 | * @id: Device Identifier |
| 495 | * @r_state: true if requested to be stopped |
| 496 | * @curr_state: true if currently stopped |
| 497 | * |
| 498 | * Return: 0 if all goes well, else appropriate error message |
| 499 | */ |
| 500 | int ti_sci_device_is_stop(uint32_t id, bool *r_state, bool *curr_state) |
| 501 | { |
| 502 | int ret; |
| 503 | uint8_t p_state, c_state; |
| 504 | |
| 505 | if (!r_state && !curr_state) |
| 506 | return -EINVAL; |
| 507 | |
| 508 | ret = ti_sci_device_get_state(id, NULL, NULL, &p_state, &c_state); |
| 509 | if (ret) |
| 510 | return ret; |
| 511 | |
| 512 | if (r_state) |
| 513 | *r_state = (p_state == MSG_DEVICE_SW_STATE_AUTO_OFF); |
| 514 | if (curr_state) |
| 515 | *curr_state = (c_state == MSG_DEVICE_HW_STATE_OFF); |
| 516 | |
| 517 | return 0; |
| 518 | } |
| 519 | |
| 520 | /** |
| 521 | * ti_sci_device_is_on() - Check if the device is requested to be ON |
| 522 | * |
| 523 | * @id: Device Identifier |
| 524 | * @r_state: true if requested to be ON |
| 525 | * @curr_state: true if currently ON and active |
| 526 | * |
| 527 | * Return: 0 if all goes well, else appropriate error message |
| 528 | */ |
| 529 | int ti_sci_device_is_on(uint32_t id, bool *r_state, bool *curr_state) |
| 530 | { |
| 531 | int ret; |
| 532 | uint8_t p_state, c_state; |
| 533 | |
| 534 | if (!r_state && !curr_state) |
| 535 | return -EINVAL; |
| 536 | |
| 537 | ret = |
| 538 | ti_sci_device_get_state(id, NULL, NULL, &p_state, &c_state); |
| 539 | if (ret) |
| 540 | return ret; |
| 541 | |
| 542 | if (r_state) |
| 543 | *r_state = (p_state == MSG_DEVICE_SW_STATE_ON); |
| 544 | if (curr_state) |
| 545 | *curr_state = (c_state == MSG_DEVICE_HW_STATE_ON); |
| 546 | |
| 547 | return 0; |
| 548 | } |
| 549 | |
| 550 | /** |
| 551 | * ti_sci_device_is_trans() - Check if the device is currently transitioning |
| 552 | * |
| 553 | * @id: Device Identifier |
| 554 | * @curr_state: true if currently transitioning |
| 555 | * |
| 556 | * Return: 0 if all goes well, else appropriate error message |
| 557 | */ |
| 558 | int ti_sci_device_is_trans(uint32_t id, bool *curr_state) |
| 559 | { |
| 560 | int ret; |
| 561 | uint8_t state; |
| 562 | |
| 563 | if (!curr_state) |
| 564 | return -EINVAL; |
| 565 | |
| 566 | ret = ti_sci_device_get_state(id, NULL, NULL, NULL, &state); |
| 567 | if (ret) |
| 568 | return ret; |
| 569 | |
| 570 | *curr_state = (state == MSG_DEVICE_HW_STATE_TRANS); |
| 571 | |
| 572 | return 0; |
| 573 | } |
| 574 | |
| 575 | /** |
| 576 | * ti_sci_device_set_resets() - Set resets for device managed by TISCI |
| 577 | * |
| 578 | * @id: Device Identifier |
| 579 | * @reset_state: Device specific reset bit field |
| 580 | * |
| 581 | * Return: 0 if all goes well, else appropriate error message |
| 582 | */ |
| 583 | int ti_sci_device_set_resets(uint32_t id, uint32_t reset_state) |
| 584 | { |
| 585 | struct ti_sci_msg_req_set_device_resets req; |
| 586 | struct ti_sci_msg_hdr resp; |
| 587 | |
| 588 | struct ti_sci_xfer xfer; |
| 589 | int ret; |
| 590 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 591 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_DEVICE_RESETS, 0, |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 592 | &req, sizeof(req), |
| 593 | &resp, sizeof(resp), |
| 594 | &xfer); |
| 595 | if (ret) { |
| 596 | ERROR("Message alloc failed (%d)\n", ret); |
| 597 | return ret; |
| 598 | } |
| 599 | |
| 600 | req.id = id; |
| 601 | req.resets = reset_state; |
| 602 | |
| 603 | ret = ti_sci_do_xfer(&xfer); |
| 604 | if (ret) { |
| 605 | ERROR("Transfer send failed (%d)\n", ret); |
| 606 | return ret; |
| 607 | } |
| 608 | |
Andrew F. Davis | 4f2a055 | 2018-05-04 19:06:10 +0000 | [diff] [blame] | 609 | return 0; |
| 610 | } |
| 611 | |
| 612 | /** |
| 613 | * ti_sci_device_get_resets() - Get reset state for device managed by TISCI |
| 614 | * |
| 615 | * @id: Device Identifier |
| 616 | * @reset_state: Pointer to reset state to populate |
| 617 | * |
| 618 | * Return: 0 if all goes well, else appropriate error message |
| 619 | */ |
| 620 | int ti_sci_device_get_resets(uint32_t id, uint32_t *reset_state) |
| 621 | { |
| 622 | return ti_sci_device_get_state(id, NULL, reset_state, NULL, NULL); |
| 623 | } |
| 624 | |
| 625 | /** |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 626 | * ti_sci_clock_set_state() - Set clock state helper |
| 627 | * |
| 628 | * @dev_id: Device identifier this request is for |
| 629 | * @clk_id: Clock identifier for the device for this request, |
| 630 | * Each device has its own set of clock inputs, This indexes |
| 631 | * which clock input to modify |
| 632 | * @flags: Header flags as needed |
| 633 | * @state: State to request for the clock |
| 634 | * |
| 635 | * Return: 0 if all goes well, else appropriate error message |
| 636 | */ |
| 637 | int ti_sci_clock_set_state(uint32_t dev_id, uint8_t clk_id, |
| 638 | uint32_t flags, uint8_t state) |
| 639 | { |
| 640 | struct ti_sci_msg_req_set_clock_state req; |
| 641 | struct ti_sci_msg_hdr resp; |
| 642 | |
| 643 | struct ti_sci_xfer xfer; |
| 644 | int ret; |
| 645 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 646 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_CLOCK_STATE, flags, |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 647 | &req, sizeof(req), |
| 648 | &resp, sizeof(resp), |
| 649 | &xfer); |
| 650 | if (ret) { |
| 651 | ERROR("Message alloc failed (%d)\n", ret); |
| 652 | return ret; |
| 653 | } |
| 654 | |
| 655 | req.dev_id = dev_id; |
| 656 | req.clk_id = clk_id; |
| 657 | req.request_state = state; |
| 658 | |
| 659 | ret = ti_sci_do_xfer(&xfer); |
| 660 | if (ret) { |
| 661 | ERROR("Transfer send failed (%d)\n", ret); |
| 662 | return ret; |
| 663 | } |
| 664 | |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 665 | return 0; |
| 666 | } |
| 667 | |
| 668 | /** |
| 669 | * ti_sci_clock_get_state() - Get clock state helper |
| 670 | * |
| 671 | * @dev_id: Device identifier this request is for |
| 672 | * @clk_id: Clock identifier for the device for this request. |
| 673 | * Each device has its own set of clock inputs. This indexes |
| 674 | * which clock input to modify. |
| 675 | * @programmed_state: State requested for clock to move to |
| 676 | * @current_state: State that the clock is currently in |
| 677 | * |
| 678 | * Return: 0 if all goes well, else appropriate error message |
| 679 | */ |
| 680 | int ti_sci_clock_get_state(uint32_t dev_id, uint8_t clk_id, |
| 681 | uint8_t *programmed_state, |
| 682 | uint8_t *current_state) |
| 683 | { |
| 684 | struct ti_sci_msg_req_get_clock_state req; |
| 685 | struct ti_sci_msg_resp_get_clock_state resp; |
| 686 | |
| 687 | struct ti_sci_xfer xfer; |
| 688 | int ret; |
| 689 | |
| 690 | if (!programmed_state && !current_state) |
| 691 | return -EINVAL; |
| 692 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 693 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_CLOCK_STATE, 0, |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 694 | &req, sizeof(req), |
| 695 | &resp, sizeof(resp), |
| 696 | &xfer); |
| 697 | if (ret) { |
| 698 | ERROR("Message alloc failed (%d)\n", ret); |
| 699 | return ret; |
| 700 | } |
| 701 | |
| 702 | req.dev_id = dev_id; |
| 703 | req.clk_id = clk_id; |
| 704 | |
| 705 | ret = ti_sci_do_xfer(&xfer); |
| 706 | if (ret) { |
| 707 | ERROR("Transfer send failed (%d)\n", ret); |
| 708 | return ret; |
| 709 | } |
| 710 | |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 711 | if (programmed_state) |
| 712 | *programmed_state = resp.programmed_state; |
| 713 | if (current_state) |
| 714 | *current_state = resp.current_state; |
| 715 | |
| 716 | return 0; |
| 717 | } |
| 718 | |
| 719 | /** |
| 720 | * ti_sci_clock_get() - Get control of a clock from TI SCI |
| 721 | |
| 722 | * @dev_id: Device identifier this request is for |
| 723 | * @clk_id: Clock identifier for the device for this request. |
| 724 | * Each device has its own set of clock inputs. This indexes |
| 725 | * which clock input to modify. |
| 726 | * @needs_ssc: 'true' iff Spread Spectrum clock is desired |
| 727 | * @can_change_freq: 'true' iff frequency change is desired |
| 728 | * @enable_input_term: 'true' iff input termination is desired |
| 729 | * |
| 730 | * Return: 0 if all goes well, else appropriate error message |
| 731 | */ |
| 732 | int ti_sci_clock_get(uint32_t dev_id, uint8_t clk_id, |
| 733 | bool needs_ssc, bool can_change_freq, |
| 734 | bool enable_input_term) |
| 735 | { |
| 736 | uint32_t flags = 0; |
| 737 | |
| 738 | flags |= needs_ssc ? MSG_FLAG_CLOCK_ALLOW_SSC : 0; |
| 739 | flags |= can_change_freq ? MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE : 0; |
| 740 | flags |= enable_input_term ? MSG_FLAG_CLOCK_INPUT_TERM : 0; |
| 741 | |
| 742 | return ti_sci_clock_set_state(dev_id, clk_id, flags, |
| 743 | MSG_CLOCK_SW_STATE_REQ); |
| 744 | } |
| 745 | |
| 746 | /** |
| 747 | * ti_sci_clock_idle() - Idle a clock which is in our control |
| 748 | |
| 749 | * @dev_id: Device identifier this request is for |
| 750 | * @clk_id: Clock identifier for the device for this request. |
| 751 | * Each device has its own set of clock inputs. This indexes |
| 752 | * which clock input to modify. |
| 753 | * |
| 754 | * NOTE: This clock must have been requested by get_clock previously. |
| 755 | * |
| 756 | * Return: 0 if all goes well, else appropriate error message |
| 757 | */ |
| 758 | int ti_sci_clock_idle(uint32_t dev_id, uint8_t clk_id) |
| 759 | { |
| 760 | return ti_sci_clock_set_state(dev_id, clk_id, 0, |
| 761 | MSG_CLOCK_SW_STATE_UNREQ); |
| 762 | } |
| 763 | |
| 764 | /** |
| 765 | * ti_sci_clock_put() - Release a clock from our control |
| 766 | * |
| 767 | * @dev_id: Device identifier this request is for |
| 768 | * @clk_id: Clock identifier for the device for this request. |
| 769 | * Each device has its own set of clock inputs. This indexes |
| 770 | * which clock input to modify. |
| 771 | * |
| 772 | * NOTE: This clock must have been requested by get_clock previously. |
| 773 | * |
| 774 | * Return: 0 if all goes well, else appropriate error message |
| 775 | */ |
| 776 | int ti_sci_clock_put(uint32_t dev_id, uint8_t clk_id) |
| 777 | { |
| 778 | return ti_sci_clock_set_state(dev_id, clk_id, 0, |
| 779 | MSG_CLOCK_SW_STATE_AUTO); |
| 780 | } |
| 781 | |
| 782 | /** |
| 783 | * ti_sci_clock_is_auto() - Is the clock being auto managed |
| 784 | * |
| 785 | * @dev_id: Device identifier this request is for |
| 786 | * @clk_id: Clock identifier for the device for this request. |
| 787 | * Each device has its own set of clock inputs. This indexes |
| 788 | * which clock input to modify. |
| 789 | * @req_state: state indicating if the clock is auto managed |
| 790 | * |
| 791 | * Return: 0 if all goes well, else appropriate error message |
| 792 | */ |
| 793 | int ti_sci_clock_is_auto(uint32_t dev_id, uint8_t clk_id, bool *req_state) |
| 794 | { |
| 795 | uint8_t state = 0; |
| 796 | int ret; |
| 797 | |
| 798 | if (!req_state) |
| 799 | return -EINVAL; |
| 800 | |
| 801 | ret = ti_sci_clock_get_state(dev_id, clk_id, &state, NULL); |
| 802 | if (ret) |
| 803 | return ret; |
| 804 | |
| 805 | *req_state = (state == MSG_CLOCK_SW_STATE_AUTO); |
| 806 | |
| 807 | return 0; |
| 808 | } |
| 809 | |
| 810 | /** |
| 811 | * ti_sci_clock_is_on() - Is the clock ON |
| 812 | * |
| 813 | * @dev_id: Device identifier this request is for |
| 814 | * @clk_id: Clock identifier for the device for this request. |
| 815 | * Each device has its own set of clock inputs. This indexes |
| 816 | * which clock input to modify. |
| 817 | * @req_state: state indicating if the clock is managed by us and enabled |
| 818 | * @curr_state: state indicating if the clock is ready for operation |
| 819 | * |
| 820 | * Return: 0 if all goes well, else appropriate error message |
| 821 | */ |
| 822 | int ti_sci_clock_is_on(uint32_t dev_id, uint8_t clk_id, |
| 823 | bool *req_state, bool *curr_state) |
| 824 | { |
| 825 | uint8_t c_state = 0, r_state = 0; |
| 826 | int ret; |
| 827 | |
| 828 | if (!req_state && !curr_state) |
| 829 | return -EINVAL; |
| 830 | |
| 831 | ret = ti_sci_clock_get_state(dev_id, clk_id, &r_state, &c_state); |
| 832 | if (ret) |
| 833 | return ret; |
| 834 | |
| 835 | if (req_state) |
| 836 | *req_state = (r_state == MSG_CLOCK_SW_STATE_REQ); |
| 837 | if (curr_state) |
| 838 | *curr_state = (c_state == MSG_CLOCK_HW_STATE_READY); |
| 839 | |
| 840 | return 0; |
| 841 | } |
| 842 | |
| 843 | /** |
| 844 | * ti_sci_clock_is_off() - Is the clock OFF |
| 845 | * |
| 846 | * @dev_id: Device identifier this request is for |
| 847 | * @clk_id: Clock identifier for the device for this request. |
| 848 | * Each device has its own set of clock inputs. This indexes |
| 849 | * which clock input to modify. |
| 850 | * @req_state: state indicating if the clock is managed by us and disabled |
| 851 | * @curr_state: state indicating if the clock is NOT ready for operation |
| 852 | * |
| 853 | * Return: 0 if all goes well, else appropriate error message |
| 854 | */ |
| 855 | int ti_sci_clock_is_off(uint32_t dev_id, uint8_t clk_id, |
| 856 | bool *req_state, bool *curr_state) |
| 857 | { |
| 858 | uint8_t c_state = 0, r_state = 0; |
| 859 | int ret; |
| 860 | |
| 861 | if (!req_state && !curr_state) |
| 862 | return -EINVAL; |
| 863 | |
| 864 | ret = ti_sci_clock_get_state(dev_id, clk_id, &r_state, &c_state); |
| 865 | if (ret) |
| 866 | return ret; |
| 867 | |
| 868 | if (req_state) |
| 869 | *req_state = (r_state == MSG_CLOCK_SW_STATE_UNREQ); |
| 870 | if (curr_state) |
| 871 | *curr_state = (c_state == MSG_CLOCK_HW_STATE_NOT_READY); |
| 872 | |
| 873 | return 0; |
| 874 | } |
| 875 | |
| 876 | /** |
| 877 | * ti_sci_clock_set_parent() - Set the clock source of a specific device clock |
| 878 | * |
| 879 | * @dev_id: Device identifier this request is for |
| 880 | * @clk_id: Clock identifier for the device for this request. |
| 881 | * Each device has its own set of clock inputs. This indexes |
| 882 | * which clock input to modify. |
| 883 | * @parent_id: Parent clock identifier to set |
| 884 | * |
| 885 | * Return: 0 if all goes well, else appropriate error message |
| 886 | */ |
| 887 | int ti_sci_clock_set_parent(uint32_t dev_id, uint8_t clk_id, uint8_t parent_id) |
| 888 | { |
| 889 | struct ti_sci_msg_req_set_clock_parent req; |
| 890 | struct ti_sci_msg_hdr resp; |
| 891 | |
| 892 | struct ti_sci_xfer xfer; |
| 893 | int ret; |
| 894 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 895 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_CLOCK_PARENT, 0, |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 896 | &req, sizeof(req), |
| 897 | &resp, sizeof(resp), |
| 898 | &xfer); |
| 899 | if (ret) { |
| 900 | ERROR("Message alloc failed (%d)\n", ret); |
| 901 | return ret; |
| 902 | } |
| 903 | |
| 904 | req.dev_id = dev_id; |
| 905 | req.clk_id = clk_id; |
| 906 | req.parent_id = parent_id; |
| 907 | |
| 908 | ret = ti_sci_do_xfer(&xfer); |
| 909 | if (ret) { |
| 910 | ERROR("Transfer send failed (%d)\n", ret); |
| 911 | return ret; |
| 912 | } |
| 913 | |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 914 | return 0; |
| 915 | } |
| 916 | |
| 917 | /** |
| 918 | * ti_sci_clock_get_parent() - Get current parent clock source |
| 919 | * |
| 920 | * @dev_id: Device identifier this request is for |
| 921 | * @clk_id: Clock identifier for the device for this request. |
| 922 | * Each device has its own set of clock inputs. This indexes |
| 923 | * which clock input to modify. |
| 924 | * @parent_id: Current clock parent |
| 925 | * |
| 926 | * Return: 0 if all goes well, else appropriate error message |
| 927 | */ |
| 928 | int ti_sci_clock_get_parent(uint32_t dev_id, uint8_t clk_id, uint8_t *parent_id) |
| 929 | { |
| 930 | struct ti_sci_msg_req_get_clock_parent req; |
| 931 | struct ti_sci_msg_resp_get_clock_parent resp; |
| 932 | |
| 933 | struct ti_sci_xfer xfer; |
| 934 | int ret; |
| 935 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 936 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_CLOCK_PARENT, 0, |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 937 | &req, sizeof(req), |
| 938 | &resp, sizeof(resp), |
| 939 | &xfer); |
| 940 | if (ret) { |
| 941 | ERROR("Message alloc failed (%d)\n", ret); |
| 942 | return ret; |
| 943 | } |
| 944 | |
| 945 | req.dev_id = dev_id; |
| 946 | req.clk_id = clk_id; |
| 947 | |
| 948 | ret = ti_sci_do_xfer(&xfer); |
| 949 | if (ret) { |
| 950 | ERROR("Transfer send failed (%d)\n", ret); |
| 951 | return ret; |
| 952 | } |
| 953 | |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 954 | *parent_id = resp.parent_id; |
| 955 | |
| 956 | return 0; |
| 957 | } |
| 958 | |
| 959 | /** |
| 960 | * ti_sci_clock_get_num_parents() - Get num parents of the current clk source |
| 961 | * |
| 962 | * @dev_id: Device identifier this request is for |
| 963 | * @clk_id: Clock identifier for the device for this request. |
| 964 | * Each device has its own set of clock inputs. This indexes |
| 965 | * which clock input to modify. |
| 966 | * @num_parents: Returns he number of parents to the current clock. |
| 967 | * |
| 968 | * Return: 0 if all goes well, else appropriate error message |
| 969 | */ |
| 970 | int ti_sci_clock_get_num_parents(uint32_t dev_id, uint8_t clk_id, |
| 971 | uint8_t *num_parents) |
| 972 | { |
| 973 | struct ti_sci_msg_req_get_clock_num_parents req; |
| 974 | struct ti_sci_msg_resp_get_clock_num_parents resp; |
| 975 | |
| 976 | struct ti_sci_xfer xfer; |
| 977 | int ret; |
| 978 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 979 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_NUM_CLOCK_PARENTS, 0, |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 980 | &req, sizeof(req), |
| 981 | &resp, sizeof(resp), |
| 982 | &xfer); |
| 983 | if (ret) { |
| 984 | ERROR("Message alloc failed (%d)\n", ret); |
| 985 | return ret; |
| 986 | } |
| 987 | |
| 988 | req.dev_id = dev_id; |
| 989 | req.clk_id = clk_id; |
| 990 | |
| 991 | ret = ti_sci_do_xfer(&xfer); |
| 992 | if (ret) { |
| 993 | ERROR("Transfer send failed (%d)\n", ret); |
| 994 | return ret; |
| 995 | } |
| 996 | |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 997 | *num_parents = resp.num_parents; |
| 998 | |
| 999 | return 0; |
| 1000 | } |
| 1001 | |
| 1002 | /** |
| 1003 | * ti_sci_clock_get_match_freq() - Find a good match for frequency |
| 1004 | * |
| 1005 | * @dev_id: Device identifier this request is for |
| 1006 | * @clk_id: Clock identifier for the device for this request. |
| 1007 | * Each device has its own set of clock inputs. This indexes |
| 1008 | * which clock input to modify. |
| 1009 | * @min_freq: The minimum allowable frequency in Hz. This is the minimum |
| 1010 | * allowable programmed frequency and does not account for clock |
| 1011 | * tolerances and jitter. |
| 1012 | * @target_freq: The target clock frequency in Hz. A frequency will be |
| 1013 | * processed as close to this target frequency as possible. |
| 1014 | * @max_freq: The maximum allowable frequency in Hz. This is the maximum |
| 1015 | * allowable programmed frequency and does not account for clock |
| 1016 | * tolerances and jitter. |
| 1017 | * @match_freq: Frequency match in Hz response. |
| 1018 | * |
| 1019 | * Return: 0 if all goes well, else appropriate error message |
| 1020 | */ |
| 1021 | int ti_sci_clock_get_match_freq(uint32_t dev_id, uint8_t clk_id, |
| 1022 | uint64_t min_freq, uint64_t target_freq, |
| 1023 | uint64_t max_freq, uint64_t *match_freq) |
| 1024 | { |
| 1025 | struct ti_sci_msg_req_query_clock_freq req; |
| 1026 | struct ti_sci_msg_resp_query_clock_freq resp; |
| 1027 | |
| 1028 | struct ti_sci_xfer xfer; |
| 1029 | int ret; |
| 1030 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 1031 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_QUERY_CLOCK_FREQ, 0, |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 1032 | &req, sizeof(req), |
| 1033 | &resp, sizeof(resp), |
| 1034 | &xfer); |
| 1035 | if (ret) { |
| 1036 | ERROR("Message alloc failed (%d)\n", ret); |
| 1037 | return ret; |
| 1038 | } |
| 1039 | |
| 1040 | req.dev_id = dev_id; |
| 1041 | req.clk_id = clk_id; |
| 1042 | req.min_freq_hz = min_freq; |
| 1043 | req.target_freq_hz = target_freq; |
| 1044 | req.max_freq_hz = max_freq; |
| 1045 | |
| 1046 | ret = ti_sci_do_xfer(&xfer); |
| 1047 | if (ret) { |
| 1048 | ERROR("Transfer send failed (%d)\n", ret); |
| 1049 | return ret; |
| 1050 | } |
| 1051 | |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 1052 | *match_freq = resp.freq_hz; |
| 1053 | |
| 1054 | return 0; |
| 1055 | } |
| 1056 | |
| 1057 | /** |
| 1058 | * ti_sci_clock_set_freq() - Set a frequency for clock |
| 1059 | * |
| 1060 | * @dev_id: Device identifier this request is for |
| 1061 | * @clk_id: Clock identifier for the device for this request. |
| 1062 | * Each device has its own set of clock inputs. This indexes |
| 1063 | * which clock input to modify. |
| 1064 | * @min_freq: The minimum allowable frequency in Hz. This is the minimum |
| 1065 | * allowable programmed frequency and does not account for clock |
| 1066 | * tolerances and jitter. |
| 1067 | * @target_freq: The target clock frequency in Hz. A frequency will be |
| 1068 | * processed as close to this target frequency as possible. |
| 1069 | * @max_freq: The maximum allowable frequency in Hz. This is the maximum |
| 1070 | * allowable programmed frequency and does not account for clock |
| 1071 | * tolerances and jitter. |
| 1072 | * |
| 1073 | * Return: 0 if all goes well, else appropriate error message |
| 1074 | */ |
| 1075 | int ti_sci_clock_set_freq(uint32_t dev_id, uint8_t clk_id, uint64_t min_freq, |
| 1076 | uint64_t target_freq, uint64_t max_freq) |
| 1077 | { |
| 1078 | struct ti_sci_msg_req_set_clock_freq req; |
| 1079 | struct ti_sci_msg_hdr resp; |
| 1080 | |
| 1081 | struct ti_sci_xfer xfer; |
| 1082 | int ret; |
| 1083 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 1084 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_CLOCK_FREQ, 0, |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 1085 | &req, sizeof(req), |
| 1086 | &resp, sizeof(resp), |
| 1087 | &xfer); |
| 1088 | if (ret) { |
| 1089 | ERROR("Message alloc failed (%d)\n", ret); |
| 1090 | return ret; |
| 1091 | } |
| 1092 | req.dev_id = dev_id; |
| 1093 | req.clk_id = clk_id; |
| 1094 | req.min_freq_hz = min_freq; |
| 1095 | req.target_freq_hz = target_freq; |
| 1096 | req.max_freq_hz = max_freq; |
| 1097 | |
| 1098 | ret = ti_sci_do_xfer(&xfer); |
| 1099 | if (ret) { |
| 1100 | ERROR("Transfer send failed (%d)\n", ret); |
| 1101 | return ret; |
| 1102 | } |
| 1103 | |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 1104 | return 0; |
| 1105 | } |
| 1106 | |
| 1107 | /** |
| 1108 | * ti_sci_clock_get_freq() - Get current frequency |
| 1109 | * |
| 1110 | * @dev_id: Device identifier this request is for |
| 1111 | * @clk_id: Clock identifier for the device for this request. |
| 1112 | * Each device has its own set of clock inputs. This indexes |
| 1113 | * which clock input to modify. |
| 1114 | * @freq: Currently frequency in Hz |
| 1115 | * |
| 1116 | * Return: 0 if all goes well, else appropriate error message |
| 1117 | */ |
| 1118 | int ti_sci_clock_get_freq(uint32_t dev_id, uint8_t clk_id, uint64_t *freq) |
| 1119 | { |
| 1120 | struct ti_sci_msg_req_get_clock_freq req; |
| 1121 | struct ti_sci_msg_resp_get_clock_freq resp; |
| 1122 | |
| 1123 | struct ti_sci_xfer xfer; |
| 1124 | int ret; |
| 1125 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 1126 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_CLOCK_FREQ, 0, |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 1127 | &req, sizeof(req), |
| 1128 | &resp, sizeof(resp), |
| 1129 | &xfer); |
| 1130 | if (ret) { |
| 1131 | ERROR("Message alloc failed (%d)\n", ret); |
| 1132 | return ret; |
| 1133 | } |
| 1134 | |
| 1135 | req.dev_id = dev_id; |
| 1136 | req.clk_id = clk_id; |
| 1137 | |
| 1138 | ret = ti_sci_do_xfer(&xfer); |
| 1139 | if (ret) { |
| 1140 | ERROR("Transfer send failed (%d)\n", ret); |
| 1141 | return ret; |
| 1142 | } |
| 1143 | |
Andrew F. Davis | dc08adf | 2018-05-04 19:06:11 +0000 | [diff] [blame] | 1144 | *freq = resp.freq_hz; |
| 1145 | |
| 1146 | return 0; |
| 1147 | } |
| 1148 | |
| 1149 | /** |
Andrew F. Davis | 0d44930 | 2018-05-04 19:06:12 +0000 | [diff] [blame] | 1150 | * ti_sci_core_reboot() - Command to request system reset |
| 1151 | * |
| 1152 | * Return: 0 if all goes well, else appropriate error message |
| 1153 | */ |
| 1154 | int ti_sci_core_reboot(void) |
| 1155 | { |
| 1156 | struct ti_sci_msg_req_reboot req; |
| 1157 | struct ti_sci_msg_hdr resp; |
| 1158 | |
| 1159 | struct ti_sci_xfer xfer; |
| 1160 | int ret; |
| 1161 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 1162 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SYS_RESET, 0, |
Andrew F. Davis | 0d44930 | 2018-05-04 19:06:12 +0000 | [diff] [blame] | 1163 | &req, sizeof(req), |
| 1164 | &resp, sizeof(resp), |
| 1165 | &xfer); |
| 1166 | if (ret) { |
| 1167 | ERROR("Message alloc failed (%d)\n", ret); |
| 1168 | return ret; |
| 1169 | } |
Suman Anna | 0cb2bb1 | 2020-10-24 01:28:54 +0000 | [diff] [blame] | 1170 | req.domain = TI_SCI_DOMAIN_FULL_SOC_RESET; |
Andrew F. Davis | 0d44930 | 2018-05-04 19:06:12 +0000 | [diff] [blame] | 1171 | |
| 1172 | ret = ti_sci_do_xfer(&xfer); |
| 1173 | if (ret) { |
| 1174 | ERROR("Transfer send failed (%d)\n", ret); |
| 1175 | return ret; |
| 1176 | } |
| 1177 | |
Andrew F. Davis | 0d44930 | 2018-05-04 19:06:12 +0000 | [diff] [blame] | 1178 | return 0; |
| 1179 | } |
| 1180 | |
| 1181 | /** |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1182 | * ti_sci_proc_request() - Request a physical processor control |
| 1183 | * |
| 1184 | * @proc_id: Processor ID this request is for |
| 1185 | * |
| 1186 | * Return: 0 if all goes well, else appropriate error message |
| 1187 | */ |
| 1188 | int ti_sci_proc_request(uint8_t proc_id) |
| 1189 | { |
| 1190 | struct ti_sci_msg_req_proc_request req; |
| 1191 | struct ti_sci_msg_hdr resp; |
| 1192 | |
| 1193 | struct ti_sci_xfer xfer; |
| 1194 | int ret; |
| 1195 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 1196 | ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_REQUEST, 0, |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1197 | &req, sizeof(req), |
| 1198 | &resp, sizeof(resp), |
| 1199 | &xfer); |
| 1200 | if (ret) { |
| 1201 | ERROR("Message alloc failed (%d)\n", ret); |
| 1202 | return ret; |
| 1203 | } |
| 1204 | |
| 1205 | req.processor_id = proc_id; |
| 1206 | |
| 1207 | ret = ti_sci_do_xfer(&xfer); |
| 1208 | if (ret) { |
| 1209 | ERROR("Transfer send failed (%d)\n", ret); |
| 1210 | return ret; |
| 1211 | } |
| 1212 | |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1213 | return 0; |
| 1214 | } |
| 1215 | |
| 1216 | /** |
| 1217 | * ti_sci_proc_release() - Release a physical processor control |
| 1218 | * |
| 1219 | * @proc_id: Processor ID this request is for |
| 1220 | * |
| 1221 | * Return: 0 if all goes well, else appropriate error message |
| 1222 | */ |
| 1223 | int ti_sci_proc_release(uint8_t proc_id) |
| 1224 | { |
| 1225 | struct ti_sci_msg_req_proc_release req; |
| 1226 | struct ti_sci_msg_hdr resp; |
| 1227 | |
| 1228 | struct ti_sci_xfer xfer; |
| 1229 | int ret; |
| 1230 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 1231 | ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_RELEASE, 0, |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1232 | &req, sizeof(req), |
| 1233 | &resp, sizeof(resp), |
| 1234 | &xfer); |
| 1235 | if (ret) { |
| 1236 | ERROR("Message alloc failed (%d)\n", ret); |
| 1237 | return ret; |
| 1238 | } |
| 1239 | |
| 1240 | req.processor_id = proc_id; |
| 1241 | |
| 1242 | ret = ti_sci_do_xfer(&xfer); |
| 1243 | if (ret) { |
| 1244 | ERROR("Transfer send failed (%d)\n", ret); |
| 1245 | return ret; |
| 1246 | } |
| 1247 | |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1248 | return 0; |
| 1249 | } |
| 1250 | |
| 1251 | /** |
| 1252 | * ti_sci_proc_handover() - Handover a physical processor control to a host in |
| 1253 | * the processor's access control list. |
| 1254 | * |
| 1255 | * @proc_id: Processor ID this request is for |
| 1256 | * @host_id: Host ID to get the control of the processor |
| 1257 | * |
| 1258 | * Return: 0 if all goes well, else appropriate error message |
| 1259 | */ |
| 1260 | int ti_sci_proc_handover(uint8_t proc_id, uint8_t host_id) |
| 1261 | { |
| 1262 | struct ti_sci_msg_req_proc_handover req; |
| 1263 | struct ti_sci_msg_hdr resp; |
| 1264 | |
| 1265 | struct ti_sci_xfer xfer; |
| 1266 | int ret; |
| 1267 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 1268 | ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_HANDOVER, 0, |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1269 | &req, sizeof(req), |
| 1270 | &resp, sizeof(resp), |
| 1271 | &xfer); |
| 1272 | if (ret) { |
| 1273 | ERROR("Message alloc failed (%d)\n", ret); |
| 1274 | return ret; |
| 1275 | } |
| 1276 | |
| 1277 | req.processor_id = proc_id; |
| 1278 | req.host_id = host_id; |
| 1279 | |
| 1280 | ret = ti_sci_do_xfer(&xfer); |
| 1281 | if (ret) { |
| 1282 | ERROR("Transfer send failed (%d)\n", ret); |
| 1283 | return ret; |
| 1284 | } |
| 1285 | |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1286 | return 0; |
| 1287 | } |
| 1288 | |
| 1289 | /** |
| 1290 | * ti_sci_proc_set_boot_cfg() - Set the processor boot configuration flags |
| 1291 | * |
| 1292 | * @proc_id: Processor ID this request is for |
| 1293 | * @config_flags_set: Configuration flags to be set |
| 1294 | * @config_flags_clear: Configuration flags to be cleared |
| 1295 | * |
| 1296 | * Return: 0 if all goes well, else appropriate error message |
| 1297 | */ |
| 1298 | int ti_sci_proc_set_boot_cfg(uint8_t proc_id, uint64_t bootvector, |
| 1299 | uint32_t config_flags_set, |
| 1300 | uint32_t config_flags_clear) |
| 1301 | { |
| 1302 | struct ti_sci_msg_req_set_proc_boot_config req; |
| 1303 | struct ti_sci_msg_hdr resp; |
| 1304 | |
| 1305 | struct ti_sci_xfer xfer; |
| 1306 | int ret; |
| 1307 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 1308 | ret = ti_sci_setup_one_xfer(TISCI_MSG_SET_PROC_BOOT_CONFIG, 0, |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1309 | &req, sizeof(req), |
| 1310 | &resp, sizeof(resp), |
| 1311 | &xfer); |
| 1312 | if (ret) { |
| 1313 | ERROR("Message alloc failed (%d)\n", ret); |
| 1314 | return ret; |
| 1315 | } |
| 1316 | |
| 1317 | req.processor_id = proc_id; |
| 1318 | req.bootvector_low = bootvector & TISCI_ADDR_LOW_MASK; |
| 1319 | req.bootvector_high = (bootvector & TISCI_ADDR_HIGH_MASK) >> |
| 1320 | TISCI_ADDR_HIGH_SHIFT; |
| 1321 | req.config_flags_set = config_flags_set; |
| 1322 | req.config_flags_clear = config_flags_clear; |
| 1323 | |
| 1324 | ret = ti_sci_do_xfer(&xfer); |
| 1325 | if (ret) { |
| 1326 | ERROR("Transfer send failed (%d)\n", ret); |
| 1327 | return ret; |
| 1328 | } |
| 1329 | |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1330 | return 0; |
| 1331 | } |
| 1332 | |
| 1333 | /** |
| 1334 | * ti_sci_proc_set_boot_ctrl() - Set the processor boot control flags |
| 1335 | * |
| 1336 | * @proc_id: Processor ID this request is for |
| 1337 | * @control_flags_set: Control flags to be set |
| 1338 | * @control_flags_clear: Control flags to be cleared |
| 1339 | * |
| 1340 | * Return: 0 if all goes well, else appropriate error message |
| 1341 | */ |
| 1342 | int ti_sci_proc_set_boot_ctrl(uint8_t proc_id, uint32_t control_flags_set, |
| 1343 | uint32_t control_flags_clear) |
| 1344 | { |
| 1345 | struct ti_sci_msg_req_set_proc_boot_ctrl req; |
| 1346 | struct ti_sci_msg_hdr resp; |
| 1347 | |
| 1348 | struct ti_sci_xfer xfer; |
| 1349 | int ret; |
| 1350 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 1351 | ret = ti_sci_setup_one_xfer(TISCI_MSG_SET_PROC_BOOT_CTRL, 0, |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1352 | &req, sizeof(req), |
| 1353 | &resp, sizeof(resp), |
| 1354 | &xfer); |
| 1355 | if (ret) { |
| 1356 | ERROR("Message alloc failed (%d)\n", ret); |
| 1357 | return ret; |
| 1358 | } |
| 1359 | |
| 1360 | req.processor_id = proc_id; |
| 1361 | req.control_flags_set = control_flags_set; |
| 1362 | req.control_flags_clear = control_flags_clear; |
| 1363 | |
| 1364 | ret = ti_sci_do_xfer(&xfer); |
| 1365 | if (ret) { |
| 1366 | ERROR("Transfer send failed (%d)\n", ret); |
| 1367 | return ret; |
| 1368 | } |
| 1369 | |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1370 | return 0; |
| 1371 | } |
| 1372 | |
| 1373 | /** |
Andrew F. Davis | a29578d | 2019-02-11 14:18:53 -0600 | [diff] [blame] | 1374 | * ti_sci_proc_set_boot_ctrl_no_wait() - Set the processor boot control flags |
| 1375 | * without requesting or waiting for a |
| 1376 | * response. |
| 1377 | * |
| 1378 | * @proc_id: Processor ID this request is for |
| 1379 | * @control_flags_set: Control flags to be set |
| 1380 | * @control_flags_clear: Control flags to be cleared |
| 1381 | * |
| 1382 | * Return: 0 if all goes well, else appropriate error message |
| 1383 | */ |
| 1384 | int ti_sci_proc_set_boot_ctrl_no_wait(uint8_t proc_id, |
| 1385 | uint32_t control_flags_set, |
| 1386 | uint32_t control_flags_clear) |
| 1387 | { |
| 1388 | struct ti_sci_msg_req_set_proc_boot_ctrl req; |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 1389 | struct ti_sci_xfer xfer; |
Andrew F. Davis | a29578d | 2019-02-11 14:18:53 -0600 | [diff] [blame] | 1390 | int ret; |
| 1391 | |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 1392 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_DEVICE_STATE, 0, |
| 1393 | &req, sizeof(req), |
| 1394 | NULL, 0, |
| 1395 | &xfer); |
| 1396 | if (ret != 0U) { |
| 1397 | ERROR("Message alloc failed (%d)\n", ret); |
| 1398 | return ret; |
| 1399 | } |
Andrew F. Davis | a29578d | 2019-02-11 14:18:53 -0600 | [diff] [blame] | 1400 | |
| 1401 | req.processor_id = proc_id; |
| 1402 | req.control_flags_set = control_flags_set; |
| 1403 | req.control_flags_clear = control_flags_clear; |
| 1404 | |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 1405 | ret = ti_sci_do_xfer(&xfer); |
| 1406 | if (ret != 0U) { |
| 1407 | ERROR("Transfer send failed (%d)\n", ret); |
Andrew F. Davis | a29578d | 2019-02-11 14:18:53 -0600 | [diff] [blame] | 1408 | return ret; |
| 1409 | } |
| 1410 | |
Andrew F. Davis | a29578d | 2019-02-11 14:18:53 -0600 | [diff] [blame] | 1411 | return 0; |
| 1412 | } |
| 1413 | |
| 1414 | /** |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1415 | * ti_sci_proc_auth_boot_image() - Authenticate and load image and then set the |
| 1416 | * processor configuration flags |
| 1417 | * |
| 1418 | * @proc_id: Processor ID this request is for |
| 1419 | * @cert_addr: Memory address at which payload image certificate is located |
| 1420 | * |
| 1421 | * Return: 0 if all goes well, else appropriate error message |
| 1422 | */ |
| 1423 | int ti_sci_proc_auth_boot_image(uint8_t proc_id, uint64_t cert_addr) |
| 1424 | { |
| 1425 | struct ti_sci_msg_req_proc_auth_boot_image req; |
| 1426 | struct ti_sci_msg_hdr resp; |
| 1427 | |
| 1428 | struct ti_sci_xfer xfer; |
| 1429 | int ret; |
| 1430 | |
Andrew Davis | c39841f | 2023-01-10 12:34:20 -0600 | [diff] [blame] | 1431 | ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_AUTH_BOOT_IMAGE, 0, |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1432 | &req, sizeof(req), |
| 1433 | &resp, sizeof(resp), |
| 1434 | &xfer); |
| 1435 | if (ret) { |
| 1436 | ERROR("Message alloc failed (%d)\n", ret); |
| 1437 | return ret; |
| 1438 | } |
| 1439 | |
| 1440 | req.processor_id = proc_id; |
| 1441 | req.cert_addr_low = cert_addr & TISCI_ADDR_LOW_MASK; |
| 1442 | req.cert_addr_high = (cert_addr & TISCI_ADDR_HIGH_MASK) >> |
| 1443 | TISCI_ADDR_HIGH_SHIFT; |
| 1444 | |
| 1445 | ret = ti_sci_do_xfer(&xfer); |
| 1446 | if (ret) { |
| 1447 | ERROR("Transfer send failed (%d)\n", ret); |
| 1448 | return ret; |
| 1449 | } |
| 1450 | |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1451 | return 0; |
| 1452 | } |
| 1453 | |
| 1454 | /** |
| 1455 | * ti_sci_proc_get_boot_status() - Get the processor boot status |
| 1456 | * |
| 1457 | * @proc_id: Processor ID this request is for |
| 1458 | * |
| 1459 | * Return: 0 if all goes well, else appropriate error message |
| 1460 | */ |
| 1461 | int ti_sci_proc_get_boot_status(uint8_t proc_id, uint64_t *bv, |
| 1462 | uint32_t *cfg_flags, |
| 1463 | uint32_t *ctrl_flags, |
| 1464 | uint32_t *sts_flags) |
| 1465 | { |
| 1466 | struct ti_sci_msg_req_get_proc_boot_status req; |
| 1467 | struct ti_sci_msg_resp_get_proc_boot_status resp; |
| 1468 | |
| 1469 | struct ti_sci_xfer xfer; |
| 1470 | int ret; |
| 1471 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 1472 | ret = ti_sci_setup_one_xfer(TISCI_MSG_GET_PROC_BOOT_STATUS, 0, |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1473 | &req, sizeof(req), |
| 1474 | &resp, sizeof(resp), |
| 1475 | &xfer); |
| 1476 | if (ret) { |
| 1477 | ERROR("Message alloc failed (%d)\n", ret); |
| 1478 | return ret; |
| 1479 | } |
| 1480 | |
| 1481 | req.processor_id = proc_id; |
| 1482 | |
| 1483 | ret = ti_sci_do_xfer(&xfer); |
| 1484 | if (ret) { |
| 1485 | ERROR("Transfer send failed (%d)\n", ret); |
| 1486 | return ret; |
| 1487 | } |
| 1488 | |
Andrew F. Davis | d92fdfb | 2018-05-04 19:06:13 +0000 | [diff] [blame] | 1489 | *bv = (resp.bootvector_low & TISCI_ADDR_LOW_MASK) | |
| 1490 | (((uint64_t)resp.bootvector_high << TISCI_ADDR_HIGH_SHIFT) & |
| 1491 | TISCI_ADDR_HIGH_MASK); |
| 1492 | *cfg_flags = resp.config_flags; |
| 1493 | *ctrl_flags = resp.control_flags; |
| 1494 | *sts_flags = resp.status_flags; |
| 1495 | |
| 1496 | return 0; |
| 1497 | } |
| 1498 | |
| 1499 | /** |
Andrew F. Davis | b62cc1e | 2018-12-18 13:21:12 -0600 | [diff] [blame] | 1500 | * ti_sci_proc_wait_boot_status() - Wait for a processor boot status |
| 1501 | * |
| 1502 | * @proc_id: Processor ID this request is for |
| 1503 | * @num_wait_iterations Total number of iterations we will check before |
| 1504 | * we will timeout and give up |
| 1505 | * @num_match_iterations How many iterations should we have continued |
| 1506 | * status to account for status bits glitching. |
| 1507 | * This is to make sure that match occurs for |
| 1508 | * consecutive checks. This implies that the |
| 1509 | * worst case should consider that the stable |
| 1510 | * time should at the worst be num_wait_iterations |
| 1511 | * num_match_iterations to prevent timeout. |
| 1512 | * @delay_per_iteration_us Specifies how long to wait (in micro seconds) |
| 1513 | * between each status checks. This is the minimum |
| 1514 | * duration, and overhead of register reads and |
| 1515 | * checks are on top of this and can vary based on |
| 1516 | * varied conditions. |
| 1517 | * @delay_before_iterations_us Specifies how long to wait (in micro seconds) |
| 1518 | * before the very first check in the first |
| 1519 | * iteration of status check loop. This is the |
| 1520 | * minimum duration, and overhead of register |
| 1521 | * reads and checks are. |
| 1522 | * @status_flags_1_set_all_wait If non-zero, Specifies that all bits of the |
| 1523 | * status matching this field requested MUST be 1. |
| 1524 | * @status_flags_1_set_any_wait If non-zero, Specifies that at least one of the |
| 1525 | * bits matching this field requested MUST be 1. |
| 1526 | * @status_flags_1_clr_all_wait If non-zero, Specifies that all bits of the |
| 1527 | * status matching this field requested MUST be 0. |
| 1528 | * @status_flags_1_clr_any_wait If non-zero, Specifies that at least one of the |
| 1529 | * bits matching this field requested MUST be 0. |
| 1530 | * |
| 1531 | * Return: 0 if all goes well, else appropriate error message |
| 1532 | */ |
| 1533 | int ti_sci_proc_wait_boot_status(uint8_t proc_id, uint8_t num_wait_iterations, |
| 1534 | uint8_t num_match_iterations, |
| 1535 | uint8_t delay_per_iteration_us, |
| 1536 | uint8_t delay_before_iterations_us, |
| 1537 | uint32_t status_flags_1_set_all_wait, |
| 1538 | uint32_t status_flags_1_set_any_wait, |
| 1539 | uint32_t status_flags_1_clr_all_wait, |
| 1540 | uint32_t status_flags_1_clr_any_wait) |
| 1541 | { |
| 1542 | struct ti_sci_msg_req_wait_proc_boot_status req; |
| 1543 | struct ti_sci_msg_hdr resp; |
| 1544 | |
| 1545 | struct ti_sci_xfer xfer; |
| 1546 | int ret; |
| 1547 | |
Andrew F. Davis | 06b3052 | 2019-02-11 13:44:31 -0600 | [diff] [blame] | 1548 | ret = ti_sci_setup_one_xfer(TISCI_MSG_WAIT_PROC_BOOT_STATUS, 0, |
Andrew F. Davis | b62cc1e | 2018-12-18 13:21:12 -0600 | [diff] [blame] | 1549 | &req, sizeof(req), |
| 1550 | &resp, sizeof(resp), |
| 1551 | &xfer); |
| 1552 | if (ret) { |
| 1553 | ERROR("Message alloc failed (%d)\n", ret); |
| 1554 | return ret; |
| 1555 | } |
| 1556 | |
| 1557 | req.processor_id = proc_id; |
| 1558 | req.num_wait_iterations = num_wait_iterations; |
| 1559 | req.num_match_iterations = num_match_iterations; |
| 1560 | req.delay_per_iteration_us = delay_per_iteration_us; |
| 1561 | req.delay_before_iterations_us = delay_before_iterations_us; |
| 1562 | req.status_flags_1_set_all_wait = status_flags_1_set_all_wait; |
| 1563 | req.status_flags_1_set_any_wait = status_flags_1_set_any_wait; |
| 1564 | req.status_flags_1_clr_all_wait = status_flags_1_clr_all_wait; |
| 1565 | req.status_flags_1_clr_any_wait = status_flags_1_clr_any_wait; |
| 1566 | |
| 1567 | ret = ti_sci_do_xfer(&xfer); |
| 1568 | if (ret) { |
| 1569 | ERROR("Transfer send failed (%d)\n", ret); |
| 1570 | return ret; |
| 1571 | } |
| 1572 | |
Andrew F. Davis | a29578d | 2019-02-11 14:18:53 -0600 | [diff] [blame] | 1573 | return 0; |
| 1574 | } |
| 1575 | |
| 1576 | /** |
| 1577 | * ti_sci_proc_wait_boot_status_no_wait() - Wait for a processor boot status |
| 1578 | * without requesting or waiting for |
| 1579 | * a response. |
| 1580 | * |
| 1581 | * @proc_id: Processor ID this request is for |
| 1582 | * @num_wait_iterations Total number of iterations we will check before |
| 1583 | * we will timeout and give up |
| 1584 | * @num_match_iterations How many iterations should we have continued |
| 1585 | * status to account for status bits glitching. |
| 1586 | * This is to make sure that match occurs for |
| 1587 | * consecutive checks. This implies that the |
| 1588 | * worst case should consider that the stable |
| 1589 | * time should at the worst be num_wait_iterations |
| 1590 | * num_match_iterations to prevent timeout. |
| 1591 | * @delay_per_iteration_us Specifies how long to wait (in micro seconds) |
| 1592 | * between each status checks. This is the minimum |
| 1593 | * duration, and overhead of register reads and |
| 1594 | * checks are on top of this and can vary based on |
| 1595 | * varied conditions. |
| 1596 | * @delay_before_iterations_us Specifies how long to wait (in micro seconds) |
| 1597 | * before the very first check in the first |
| 1598 | * iteration of status check loop. This is the |
| 1599 | * minimum duration, and overhead of register |
| 1600 | * reads and checks are. |
| 1601 | * @status_flags_1_set_all_wait If non-zero, Specifies that all bits of the |
| 1602 | * status matching this field requested MUST be 1. |
| 1603 | * @status_flags_1_set_any_wait If non-zero, Specifies that at least one of the |
| 1604 | * bits matching this field requested MUST be 1. |
| 1605 | * @status_flags_1_clr_all_wait If non-zero, Specifies that all bits of the |
| 1606 | * status matching this field requested MUST be 0. |
| 1607 | * @status_flags_1_clr_any_wait If non-zero, Specifies that at least one of the |
| 1608 | * bits matching this field requested MUST be 0. |
| 1609 | * |
| 1610 | * Return: 0 if all goes well, else appropriate error message |
| 1611 | */ |
| 1612 | int ti_sci_proc_wait_boot_status_no_wait(uint8_t proc_id, |
| 1613 | uint8_t num_wait_iterations, |
| 1614 | uint8_t num_match_iterations, |
| 1615 | uint8_t delay_per_iteration_us, |
| 1616 | uint8_t delay_before_iterations_us, |
| 1617 | uint32_t status_flags_1_set_all_wait, |
| 1618 | uint32_t status_flags_1_set_any_wait, |
| 1619 | uint32_t status_flags_1_clr_all_wait, |
| 1620 | uint32_t status_flags_1_clr_any_wait) |
| 1621 | { |
| 1622 | struct ti_sci_msg_req_wait_proc_boot_status req; |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 1623 | struct ti_sci_xfer xfer; |
Andrew F. Davis | a29578d | 2019-02-11 14:18:53 -0600 | [diff] [blame] | 1624 | int ret; |
| 1625 | |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 1626 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_DEVICE_STATE, 0, |
| 1627 | &req, sizeof(req), |
| 1628 | NULL, 0, |
| 1629 | &xfer); |
| 1630 | if (ret != 0U) { |
| 1631 | ERROR("Message alloc failed (%d)\n", ret); |
| 1632 | return ret; |
| 1633 | } |
Andrew F. Davis | a29578d | 2019-02-11 14:18:53 -0600 | [diff] [blame] | 1634 | |
| 1635 | req.processor_id = proc_id; |
| 1636 | req.num_wait_iterations = num_wait_iterations; |
| 1637 | req.num_match_iterations = num_match_iterations; |
| 1638 | req.delay_per_iteration_us = delay_per_iteration_us; |
| 1639 | req.delay_before_iterations_us = delay_before_iterations_us; |
| 1640 | req.status_flags_1_set_all_wait = status_flags_1_set_all_wait; |
| 1641 | req.status_flags_1_set_any_wait = status_flags_1_set_any_wait; |
| 1642 | req.status_flags_1_clr_all_wait = status_flags_1_clr_all_wait; |
| 1643 | req.status_flags_1_clr_any_wait = status_flags_1_clr_any_wait; |
| 1644 | |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 1645 | ret = ti_sci_do_xfer(&xfer); |
| 1646 | if (ret != 0U) { |
| 1647 | ERROR("Transfer send failed (%d)\n", ret); |
Andrew F. Davis | a29578d | 2019-02-11 14:18:53 -0600 | [diff] [blame] | 1648 | return ret; |
| 1649 | } |
| 1650 | |
Andrew F. Davis | b62cc1e | 2018-12-18 13:21:12 -0600 | [diff] [blame] | 1651 | return 0; |
| 1652 | } |
| 1653 | |
| 1654 | /** |
Dave Gerlach | 7a94ce8 | 2021-11-30 15:35:08 -0600 | [diff] [blame] | 1655 | * ti_sci_enter_sleep - Command to initiate system transition into suspend. |
| 1656 | * |
| 1657 | * @proc_id: Processor ID. |
| 1658 | * @mode: Low power mode to enter. |
| 1659 | * @core_resume_addr: Address that core should be |
| 1660 | * resumed from after low power transition. |
| 1661 | * |
| 1662 | * Return: 0 if all goes well, else appropriate error message |
| 1663 | */ |
| 1664 | int ti_sci_enter_sleep(uint8_t proc_id, |
| 1665 | uint8_t mode, |
| 1666 | uint64_t core_resume_addr) |
| 1667 | { |
| 1668 | struct ti_sci_msg_req_enter_sleep req; |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 1669 | struct ti_sci_xfer xfer; |
Dave Gerlach | 7a94ce8 | 2021-11-30 15:35:08 -0600 | [diff] [blame] | 1670 | int ret; |
| 1671 | |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 1672 | ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_DEVICE_STATE, 0, |
| 1673 | &req, sizeof(req), |
| 1674 | NULL, 0, |
| 1675 | &xfer); |
| 1676 | if (ret != 0U) { |
| 1677 | ERROR("Message alloc failed (%d)\n", ret); |
| 1678 | return ret; |
Dave Gerlach | 7a94ce8 | 2021-11-30 15:35:08 -0600 | [diff] [blame] | 1679 | } |
| 1680 | |
Dave Gerlach | 7a94ce8 | 2021-11-30 15:35:08 -0600 | [diff] [blame] | 1681 | req.processor_id = proc_id; |
| 1682 | req.mode = mode; |
| 1683 | req.core_resume_lo = core_resume_addr & TISCI_ADDR_LOW_MASK; |
| 1684 | req.core_resume_hi = (core_resume_addr & TISCI_ADDR_HIGH_MASK) >> |
| 1685 | TISCI_ADDR_HIGH_SHIFT; |
| 1686 | |
Andrew Davis | e0a676c | 2022-05-16 13:17:02 -0500 | [diff] [blame] | 1687 | ret = ti_sci_do_xfer(&xfer); |
| 1688 | if (ret != 0U) { |
| 1689 | ERROR("Transfer send failed (%d)\n", ret); |
Dave Gerlach | 7a94ce8 | 2021-11-30 15:35:08 -0600 | [diff] [blame] | 1690 | return ret; |
| 1691 | } |
| 1692 | |
Dave Gerlach | 7a94ce8 | 2021-11-30 15:35:08 -0600 | [diff] [blame] | 1693 | return 0; |
| 1694 | } |
| 1695 | |
| 1696 | /** |
Andrew F. Davis | a513b2a | 2018-05-04 19:06:09 +0000 | [diff] [blame] | 1697 | * ti_sci_init() - Basic initialization |
| 1698 | * |
| 1699 | * Return: 0 if all goes well, else appropriate error message |
| 1700 | */ |
| 1701 | int ti_sci_init(void) |
| 1702 | { |
| 1703 | struct ti_sci_msg_resp_version rev_info; |
| 1704 | int ret; |
| 1705 | |
| 1706 | ret = ti_sci_get_revision(&rev_info); |
| 1707 | if (ret) { |
| 1708 | ERROR("Unable to communicate with control firmware (%d)\n", ret); |
| 1709 | return ret; |
| 1710 | } |
| 1711 | |
| 1712 | INFO("SYSFW ABI: %d.%d (firmware rev 0x%04x '%s')\n", |
| 1713 | rev_info.abi_major, rev_info.abi_minor, |
| 1714 | rev_info.firmware_revision, |
| 1715 | rev_info.firmware_description); |
| 1716 | |
| 1717 | return 0; |
| 1718 | } |