Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | |
| 3 | /* Copyright (c) 2013-2018, The Linux Foundation. All rights reserved. |
Alex Elder | a4388da | 2022-09-30 17:45:49 -0500 | [diff] [blame] | 4 | * Copyright (C) 2018-2022 Linaro Ltd. |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #include <linux/types.h> |
| 8 | #include <linux/string.h> |
| 9 | #include <linux/slab.h> |
| 10 | #include <linux/qrtr.h> |
| 11 | #include <linux/soc/qcom/qmi.h> |
| 12 | |
| 13 | #include "ipa.h" |
| 14 | #include "ipa_endpoint.h" |
| 15 | #include "ipa_mem.h" |
| 16 | #include "ipa_table.h" |
| 17 | #include "ipa_modem.h" |
| 18 | #include "ipa_qmi_msg.h" |
| 19 | |
| 20 | /** |
| 21 | * DOC: AP/Modem QMI Handshake |
| 22 | * |
| 23 | * The AP and modem perform a "handshake" at initialization time to ensure |
| 24 | * both sides know when everything is ready to begin operating. The AP |
| 25 | * driver (this code) uses two QMI handles (endpoints) for this; a client |
| 26 | * using a service on the modem, and server to service modem requests (and |
| 27 | * to supply an indication message from the AP). Once the handshake is |
| 28 | * complete, the AP and modem may begin IPA operation. This occurs |
| 29 | * only when the AP IPA driver, modem IPA driver, and IPA microcontroller |
| 30 | * are ready. |
| 31 | * |
| 32 | * The QMI service on the modem expects to receive an INIT_DRIVER request from |
| 33 | * the AP, which contains parameters used by the modem during initialization. |
| 34 | * The AP sends this request as soon as it is knows the modem side service |
| 35 | * is available. The modem responds to this request, and if this response |
| 36 | * contains a success result, the AP knows the modem IPA driver is ready. |
| 37 | * |
| 38 | * The modem is responsible for loading firmware on the IPA microcontroller. |
| 39 | * This occurs only during the initial modem boot. The modem sends a |
| 40 | * separate DRIVER_INIT_COMPLETE request to the AP to report that the |
| 41 | * microcontroller is ready. The AP may assume the microcontroller is |
| 42 | * ready and remain so (even if the modem reboots) once it has received |
| 43 | * and responded to this request. |
| 44 | * |
| 45 | * There is one final exchange involved in the handshake. It is required |
| 46 | * on the initial modem boot, but optional (but in practice does occur) on |
| 47 | * subsequent boots. The modem expects to receive a final INIT_COMPLETE |
| 48 | * indication message from the AP when it is about to begin its normal |
| 49 | * operation. The AP will only send this message after it has received |
| 50 | * and responded to an INDICATION_REGISTER request from the modem. |
| 51 | * |
| 52 | * So in summary: |
| 53 | * - Whenever the AP learns the modem has booted and its IPA QMI service |
| 54 | * is available, it sends an INIT_DRIVER request to the modem. The |
| 55 | * modem supplies a success response when it is ready to operate. |
| 56 | * - On the initial boot, the modem sets up the IPA microcontroller, and |
| 57 | * sends a DRIVER_INIT_COMPLETE request to the AP when this is done. |
| 58 | * - When the modem is ready to receive an INIT_COMPLETE indication from |
| 59 | * the AP, it sends an INDICATION_REGISTER request to the AP. |
| 60 | * - On the initial modem boot, everything is ready when: |
| 61 | * - AP has received a success response from its INIT_DRIVER request |
| 62 | * - AP has responded to a DRIVER_INIT_COMPLETE request |
| 63 | * - AP has responded to an INDICATION_REGISTER request from the modem |
| 64 | * - AP has sent an INIT_COMPLETE indication to the modem |
| 65 | * - On subsequent modem boots, everything is ready when: |
| 66 | * - AP has received a success response from its INIT_DRIVER request |
| 67 | * - AP has responded to a DRIVER_INIT_COMPLETE request |
| 68 | * - The INDICATION_REGISTER request and INIT_COMPLETE indication are |
| 69 | * optional for non-initial modem boots, and have no bearing on the |
| 70 | * determination of when things are "ready" |
| 71 | */ |
| 72 | |
| 73 | #define IPA_HOST_SERVICE_SVC_ID 0x31 |
| 74 | #define IPA_HOST_SVC_VERS 1 |
| 75 | #define IPA_HOST_SERVICE_INS_ID 1 |
| 76 | |
| 77 | #define IPA_MODEM_SERVICE_SVC_ID 0x31 |
| 78 | #define IPA_MODEM_SERVICE_INS_ID 2 |
| 79 | #define IPA_MODEM_SVC_VERS 1 |
| 80 | |
| 81 | #define QMI_INIT_DRIVER_TIMEOUT 60000 /* A minute in milliseconds */ |
| 82 | |
| 83 | /* Send an INIT_COMPLETE indication message to the modem */ |
| 84 | static void ipa_server_init_complete(struct ipa_qmi *ipa_qmi) |
| 85 | { |
| 86 | struct ipa *ipa = container_of(ipa_qmi, struct ipa, qmi); |
| 87 | struct qmi_handle *qmi = &ipa_qmi->server_handle; |
| 88 | struct sockaddr_qrtr *sq = &ipa_qmi->modem_sq; |
| 89 | struct ipa_init_complete_ind ind = { }; |
| 90 | int ret; |
| 91 | |
| 92 | ind.status.result = QMI_RESULT_SUCCESS_V01; |
| 93 | ind.status.error = QMI_ERR_NONE_V01; |
| 94 | |
| 95 | ret = qmi_send_indication(qmi, sq, IPA_QMI_INIT_COMPLETE, |
| 96 | IPA_QMI_INIT_COMPLETE_IND_SZ, |
| 97 | ipa_init_complete_ind_ei, &ind); |
| 98 | if (ret) |
| 99 | dev_err(&ipa->pdev->dev, |
| 100 | "error %d sending init complete indication\n", ret); |
| 101 | else |
| 102 | ipa_qmi->indication_sent = true; |
| 103 | } |
| 104 | |
| 105 | /* If requested (and not already sent) send the INIT_COMPLETE indication */ |
| 106 | static void ipa_qmi_indication(struct ipa_qmi *ipa_qmi) |
| 107 | { |
| 108 | if (!ipa_qmi->indication_requested) |
| 109 | return; |
| 110 | |
| 111 | if (ipa_qmi->indication_sent) |
| 112 | return; |
| 113 | |
| 114 | ipa_server_init_complete(ipa_qmi); |
| 115 | } |
| 116 | |
| 117 | /* Determine whether everything is ready to start normal operation. |
| 118 | * We know everything (else) is ready when we know the IPA driver on |
| 119 | * the modem is ready, and the microcontroller is ready. |
| 120 | * |
| 121 | * When the modem boots (or reboots), the handshake sequence starts |
| 122 | * with the AP sending the modem an INIT_DRIVER request. Within |
| 123 | * that request, the uc_loaded flag will be zero (false) for an |
| 124 | * initial boot, non-zero (true) for a subsequent (SSR) boot. |
| 125 | */ |
| 126 | static void ipa_qmi_ready(struct ipa_qmi *ipa_qmi) |
| 127 | { |
Alex Elder | 8d017ef | 2022-05-12 10:10:33 -0500 | [diff] [blame] | 128 | struct ipa *ipa; |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 129 | int ret; |
| 130 | |
| 131 | /* We aren't ready until the modem and microcontroller are */ |
| 132 | if (!ipa_qmi->modem_ready || !ipa_qmi->uc_ready) |
| 133 | return; |
| 134 | |
| 135 | /* Send the indication message if it was requested */ |
| 136 | ipa_qmi_indication(ipa_qmi); |
| 137 | |
| 138 | /* The initial boot requires us to send the indication. */ |
| 139 | if (ipa_qmi->initial_boot) { |
| 140 | if (!ipa_qmi->indication_sent) |
| 141 | return; |
| 142 | |
| 143 | /* The initial modem boot completed successfully */ |
| 144 | ipa_qmi->initial_boot = false; |
| 145 | } |
| 146 | |
| 147 | /* We're ready. Start up normal operation */ |
| 148 | ipa = container_of(ipa_qmi, struct ipa, qmi); |
| 149 | ret = ipa_modem_start(ipa); |
| 150 | if (ret) |
| 151 | dev_err(&ipa->pdev->dev, "error %d starting modem\n", ret); |
| 152 | } |
| 153 | |
| 154 | /* All QMI clients from the modem node are gone (modem shut down or crashed). */ |
| 155 | static void ipa_server_bye(struct qmi_handle *qmi, unsigned int node) |
| 156 | { |
| 157 | struct ipa_qmi *ipa_qmi; |
| 158 | |
| 159 | ipa_qmi = container_of(qmi, struct ipa_qmi, server_handle); |
| 160 | |
| 161 | /* The modem client and server go away at the same time */ |
| 162 | memset(&ipa_qmi->modem_sq, 0, sizeof(ipa_qmi->modem_sq)); |
| 163 | |
| 164 | /* initial_boot doesn't change when modem reboots */ |
| 165 | /* uc_ready doesn't change when modem reboots */ |
| 166 | ipa_qmi->modem_ready = false; |
| 167 | ipa_qmi->indication_requested = false; |
| 168 | ipa_qmi->indication_sent = false; |
| 169 | } |
| 170 | |
Rikard Falkeborn | b5094a3 | 2020-11-23 00:40:30 +0100 | [diff] [blame] | 171 | static const struct qmi_ops ipa_server_ops = { |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 172 | .bye = ipa_server_bye, |
| 173 | }; |
| 174 | |
| 175 | /* Callback function to handle an INDICATION_REGISTER request message from the |
| 176 | * modem. This informs the AP that the modem is now ready to receive the |
| 177 | * INIT_COMPLETE indication message. |
| 178 | */ |
| 179 | static void ipa_server_indication_register(struct qmi_handle *qmi, |
| 180 | struct sockaddr_qrtr *sq, |
| 181 | struct qmi_txn *txn, |
| 182 | const void *decoded) |
| 183 | { |
| 184 | struct ipa_indication_register_rsp rsp = { }; |
| 185 | struct ipa_qmi *ipa_qmi; |
| 186 | struct ipa *ipa; |
| 187 | int ret; |
| 188 | |
| 189 | ipa_qmi = container_of(qmi, struct ipa_qmi, server_handle); |
| 190 | ipa = container_of(ipa_qmi, struct ipa, qmi); |
| 191 | |
| 192 | rsp.rsp.result = QMI_RESULT_SUCCESS_V01; |
| 193 | rsp.rsp.error = QMI_ERR_NONE_V01; |
| 194 | |
| 195 | ret = qmi_send_response(qmi, sq, txn, IPA_QMI_INDICATION_REGISTER, |
| 196 | IPA_QMI_INDICATION_REGISTER_RSP_SZ, |
| 197 | ipa_indication_register_rsp_ei, &rsp); |
| 198 | if (!ret) { |
| 199 | ipa_qmi->indication_requested = true; |
| 200 | ipa_qmi_ready(ipa_qmi); /* We might be ready now */ |
| 201 | } else { |
| 202 | dev_err(&ipa->pdev->dev, |
| 203 | "error %d sending register indication response\n", ret); |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | /* Respond to a DRIVER_INIT_COMPLETE request message from the modem. */ |
| 208 | static void ipa_server_driver_init_complete(struct qmi_handle *qmi, |
| 209 | struct sockaddr_qrtr *sq, |
| 210 | struct qmi_txn *txn, |
| 211 | const void *decoded) |
| 212 | { |
| 213 | struct ipa_driver_init_complete_rsp rsp = { }; |
| 214 | struct ipa_qmi *ipa_qmi; |
| 215 | struct ipa *ipa; |
| 216 | int ret; |
| 217 | |
| 218 | ipa_qmi = container_of(qmi, struct ipa_qmi, server_handle); |
| 219 | ipa = container_of(ipa_qmi, struct ipa, qmi); |
| 220 | |
| 221 | rsp.rsp.result = QMI_RESULT_SUCCESS_V01; |
| 222 | rsp.rsp.error = QMI_ERR_NONE_V01; |
| 223 | |
| 224 | ret = qmi_send_response(qmi, sq, txn, IPA_QMI_DRIVER_INIT_COMPLETE, |
| 225 | IPA_QMI_DRIVER_INIT_COMPLETE_RSP_SZ, |
| 226 | ipa_driver_init_complete_rsp_ei, &rsp); |
| 227 | if (!ret) { |
| 228 | ipa_qmi->uc_ready = true; |
| 229 | ipa_qmi_ready(ipa_qmi); /* We might be ready now */ |
| 230 | } else { |
| 231 | dev_err(&ipa->pdev->dev, |
| 232 | "error %d sending init complete response\n", ret); |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | /* The server handles two request message types sent by the modem. */ |
Rikard Falkeborn | b5094a3 | 2020-11-23 00:40:30 +0100 | [diff] [blame] | 237 | static const struct qmi_msg_handler ipa_server_msg_handlers[] = { |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 238 | { |
| 239 | .type = QMI_REQUEST, |
| 240 | .msg_id = IPA_QMI_INDICATION_REGISTER, |
| 241 | .ei = ipa_indication_register_req_ei, |
| 242 | .decoded_size = IPA_QMI_INDICATION_REGISTER_REQ_SZ, |
| 243 | .fn = ipa_server_indication_register, |
| 244 | }, |
| 245 | { |
| 246 | .type = QMI_REQUEST, |
| 247 | .msg_id = IPA_QMI_DRIVER_INIT_COMPLETE, |
| 248 | .ei = ipa_driver_init_complete_req_ei, |
| 249 | .decoded_size = IPA_QMI_DRIVER_INIT_COMPLETE_REQ_SZ, |
| 250 | .fn = ipa_server_driver_init_complete, |
| 251 | }, |
Alex Elder | 3a9ef3e | 2021-03-12 09:12:48 -0600 | [diff] [blame] | 252 | { }, |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 253 | }; |
| 254 | |
| 255 | /* Handle an INIT_DRIVER response message from the modem. */ |
| 256 | static void ipa_client_init_driver(struct qmi_handle *qmi, |
| 257 | struct sockaddr_qrtr *sq, |
| 258 | struct qmi_txn *txn, const void *decoded) |
| 259 | { |
| 260 | txn->result = 0; /* IPA_QMI_INIT_DRIVER request was successful */ |
| 261 | complete(&txn->completion); |
| 262 | } |
| 263 | |
| 264 | /* The client handles one response message type sent by the modem. */ |
Rikard Falkeborn | b5094a3 | 2020-11-23 00:40:30 +0100 | [diff] [blame] | 265 | static const struct qmi_msg_handler ipa_client_msg_handlers[] = { |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 266 | { |
| 267 | .type = QMI_RESPONSE, |
| 268 | .msg_id = IPA_QMI_INIT_DRIVER, |
| 269 | .ei = ipa_init_modem_driver_rsp_ei, |
| 270 | .decoded_size = IPA_QMI_INIT_DRIVER_RSP_SZ, |
| 271 | .fn = ipa_client_init_driver, |
| 272 | }, |
Alex Elder | 3a9ef3e | 2021-03-12 09:12:48 -0600 | [diff] [blame] | 273 | { }, |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 274 | }; |
| 275 | |
| 276 | /* Return a pointer to an init modem driver request structure, which contains |
| 277 | * configuration parameters for the modem. The modem may be started multiple |
| 278 | * times, but generally these parameters don't change so we can reuse the |
| 279 | * request structure once it's initialized. The only exception is the |
| 280 | * skip_uc_load field, which will be set only after the microcontroller has |
| 281 | * reported it has completed its initialization. |
| 282 | */ |
| 283 | static const struct ipa_init_modem_driver_req * |
| 284 | init_modem_driver_req(struct ipa_qmi *ipa_qmi) |
| 285 | { |
| 286 | struct ipa *ipa = container_of(ipa_qmi, struct ipa, qmi); |
Alex Elder | 8defab8 | 2022-10-25 14:51:42 -0500 | [diff] [blame] | 287 | u32 modem_route_count = ipa->modem_route_count; |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 288 | static struct ipa_init_modem_driver_req req; |
| 289 | const struct ipa_mem *mem; |
| 290 | |
| 291 | /* The microcontroller is initialized on the first boot */ |
| 292 | req.skip_uc_load_valid = 1; |
| 293 | req.skip_uc_load = ipa->uc_loaded ? 1 : 0; |
| 294 | |
| 295 | /* We only have to initialize most of it once */ |
| 296 | if (req.platform_type_valid) |
| 297 | return &req; |
| 298 | |
| 299 | req.platform_type_valid = 1; |
| 300 | req.platform_type = IPA_QMI_PLATFORM_TYPE_MSM_ANDROID; |
| 301 | |
Alex Elder | 5e3bc1e | 2021-06-10 14:23:07 -0500 | [diff] [blame] | 302 | mem = ipa_mem_find(ipa, IPA_MEM_MODEM_HEADER); |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 303 | if (mem->size) { |
| 304 | req.hdr_tbl_info_valid = 1; |
| 305 | req.hdr_tbl_info.start = ipa->mem_offset + mem->offset; |
| 306 | req.hdr_tbl_info.end = req.hdr_tbl_info.start + mem->size - 1; |
| 307 | } |
| 308 | |
Alex Elder | 5e3bc1e | 2021-06-10 14:23:07 -0500 | [diff] [blame] | 309 | mem = ipa_mem_find(ipa, IPA_MEM_V4_ROUTE); |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 310 | req.v4_route_tbl_info_valid = 1; |
| 311 | req.v4_route_tbl_info.start = ipa->mem_offset + mem->offset; |
Alex Elder | 8defab8 | 2022-10-25 14:51:42 -0500 | [diff] [blame] | 312 | req.v4_route_tbl_info.end = modem_route_count - 1; |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 313 | |
Alex Elder | 5e3bc1e | 2021-06-10 14:23:07 -0500 | [diff] [blame] | 314 | mem = ipa_mem_find(ipa, IPA_MEM_V6_ROUTE); |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 315 | req.v6_route_tbl_info_valid = 1; |
| 316 | req.v6_route_tbl_info.start = ipa->mem_offset + mem->offset; |
Alex Elder | 8defab8 | 2022-10-25 14:51:42 -0500 | [diff] [blame] | 317 | req.v6_route_tbl_info.end = modem_route_count - 1; |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 318 | |
Alex Elder | 5e3bc1e | 2021-06-10 14:23:07 -0500 | [diff] [blame] | 319 | mem = ipa_mem_find(ipa, IPA_MEM_V4_FILTER); |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 320 | req.v4_filter_tbl_start_valid = 1; |
| 321 | req.v4_filter_tbl_start = ipa->mem_offset + mem->offset; |
| 322 | |
Alex Elder | 5e3bc1e | 2021-06-10 14:23:07 -0500 | [diff] [blame] | 323 | mem = ipa_mem_find(ipa, IPA_MEM_V6_FILTER); |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 324 | req.v6_filter_tbl_start_valid = 1; |
| 325 | req.v6_filter_tbl_start = ipa->mem_offset + mem->offset; |
| 326 | |
Alex Elder | 5e3bc1e | 2021-06-10 14:23:07 -0500 | [diff] [blame] | 327 | mem = ipa_mem_find(ipa, IPA_MEM_MODEM); |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 328 | if (mem->size) { |
| 329 | req.modem_mem_info_valid = 1; |
| 330 | req.modem_mem_info.start = ipa->mem_offset + mem->offset; |
| 331 | req.modem_mem_info.size = mem->size; |
| 332 | } |
| 333 | |
| 334 | req.ctrl_comm_dest_end_pt_valid = 1; |
| 335 | req.ctrl_comm_dest_end_pt = |
| 336 | ipa->name_map[IPA_ENDPOINT_AP_MODEM_RX]->endpoint_id; |
| 337 | |
| 338 | /* skip_uc_load_valid and skip_uc_load are set above */ |
| 339 | |
Alex Elder | 5e3bc1e | 2021-06-10 14:23:07 -0500 | [diff] [blame] | 340 | mem = ipa_mem_find(ipa, IPA_MEM_MODEM_PROC_CTX); |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 341 | if (mem->size) { |
| 342 | req.hdr_proc_ctx_tbl_info_valid = 1; |
| 343 | req.hdr_proc_ctx_tbl_info.start = |
| 344 | ipa->mem_offset + mem->offset; |
| 345 | req.hdr_proc_ctx_tbl_info.end = |
| 346 | req.hdr_proc_ctx_tbl_info.start + mem->size - 1; |
| 347 | } |
| 348 | |
| 349 | /* Nothing to report for the compression table (zip_tbl_info) */ |
| 350 | |
Alex Elder | 5e3bc1e | 2021-06-10 14:23:07 -0500 | [diff] [blame] | 351 | mem = ipa_mem_find(ipa, IPA_MEM_V4_ROUTE_HASHED); |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 352 | if (mem->size) { |
| 353 | req.v4_hash_route_tbl_info_valid = 1; |
| 354 | req.v4_hash_route_tbl_info.start = |
| 355 | ipa->mem_offset + mem->offset; |
Alex Elder | 8defab8 | 2022-10-25 14:51:42 -0500 | [diff] [blame] | 356 | req.v4_hash_route_tbl_info.end = modem_route_count - 1; |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 357 | } |
| 358 | |
Alex Elder | 5e3bc1e | 2021-06-10 14:23:07 -0500 | [diff] [blame] | 359 | mem = ipa_mem_find(ipa, IPA_MEM_V6_ROUTE_HASHED); |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 360 | if (mem->size) { |
| 361 | req.v6_hash_route_tbl_info_valid = 1; |
| 362 | req.v6_hash_route_tbl_info.start = |
| 363 | ipa->mem_offset + mem->offset; |
Alex Elder | 8defab8 | 2022-10-25 14:51:42 -0500 | [diff] [blame] | 364 | req.v6_hash_route_tbl_info.end = modem_route_count - 1; |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 365 | } |
| 366 | |
Alex Elder | 5e3bc1e | 2021-06-10 14:23:07 -0500 | [diff] [blame] | 367 | mem = ipa_mem_find(ipa, IPA_MEM_V4_FILTER_HASHED); |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 368 | if (mem->size) { |
| 369 | req.v4_hash_filter_tbl_start_valid = 1; |
| 370 | req.v4_hash_filter_tbl_start = ipa->mem_offset + mem->offset; |
| 371 | } |
| 372 | |
Alex Elder | 5e3bc1e | 2021-06-10 14:23:07 -0500 | [diff] [blame] | 373 | mem = ipa_mem_find(ipa, IPA_MEM_V6_FILTER_HASHED); |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 374 | if (mem->size) { |
| 375 | req.v6_hash_filter_tbl_start_valid = 1; |
| 376 | req.v6_hash_filter_tbl_start = ipa->mem_offset + mem->offset; |
| 377 | } |
| 378 | |
Alex Elder | 5e3bc1e | 2021-06-10 14:23:07 -0500 | [diff] [blame] | 379 | /* The stats fields are only valid for IPA v4.0+ */ |
Alex Elder | d7f3087b | 2021-03-24 08:15:23 -0500 | [diff] [blame] | 380 | if (ipa->version >= IPA_VERSION_4_0) { |
Alex Elder | 5e3bc1e | 2021-06-10 14:23:07 -0500 | [diff] [blame] | 381 | mem = ipa_mem_find(ipa, IPA_MEM_STATS_QUOTA_MODEM); |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 382 | if (mem->size) { |
| 383 | req.hw_stats_quota_base_addr_valid = 1; |
| 384 | req.hw_stats_quota_base_addr = |
| 385 | ipa->mem_offset + mem->offset; |
| 386 | req.hw_stats_quota_size_valid = 1; |
| 387 | req.hw_stats_quota_size = ipa->mem_offset + mem->size; |
| 388 | } |
| 389 | |
Alex Elder | 5e3bc1e | 2021-06-10 14:23:07 -0500 | [diff] [blame] | 390 | /* If the DROP stats region is defined, include it */ |
| 391 | mem = ipa_mem_find(ipa, IPA_MEM_STATS_DROP); |
| 392 | if (mem && mem->size) { |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 393 | req.hw_stats_drop_base_addr_valid = 1; |
| 394 | req.hw_stats_drop_base_addr = |
| 395 | ipa->mem_offset + mem->offset; |
| 396 | req.hw_stats_drop_size_valid = 1; |
| 397 | req.hw_stats_drop_size = ipa->mem_offset + mem->size; |
| 398 | } |
| 399 | } |
| 400 | |
| 401 | return &req; |
| 402 | } |
| 403 | |
| 404 | /* Send an INIT_DRIVER request to the modem, and wait for it to complete. */ |
| 405 | static void ipa_client_init_driver_work(struct work_struct *work) |
| 406 | { |
| 407 | unsigned long timeout = msecs_to_jiffies(QMI_INIT_DRIVER_TIMEOUT); |
| 408 | const struct ipa_init_modem_driver_req *req; |
| 409 | struct ipa_qmi *ipa_qmi; |
| 410 | struct qmi_handle *qmi; |
| 411 | struct qmi_txn txn; |
| 412 | struct device *dev; |
| 413 | struct ipa *ipa; |
| 414 | int ret; |
| 415 | |
| 416 | ipa_qmi = container_of(work, struct ipa_qmi, init_driver_work); |
Zheng Yongjun | e65f3df | 2020-12-09 21:40:03 +0800 | [diff] [blame] | 417 | qmi = &ipa_qmi->client_handle; |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 418 | |
| 419 | ipa = container_of(ipa_qmi, struct ipa, qmi); |
| 420 | dev = &ipa->pdev->dev; |
| 421 | |
| 422 | ret = qmi_txn_init(qmi, &txn, NULL, NULL); |
| 423 | if (ret < 0) { |
| 424 | dev_err(dev, "error %d preparing init driver request\n", ret); |
| 425 | return; |
| 426 | } |
| 427 | |
| 428 | /* Send the request, and if successful wait for its response */ |
| 429 | req = init_modem_driver_req(ipa_qmi); |
| 430 | ret = qmi_send_request(qmi, &ipa_qmi->modem_sq, &txn, |
| 431 | IPA_QMI_INIT_DRIVER, IPA_QMI_INIT_DRIVER_REQ_SZ, |
| 432 | ipa_init_modem_driver_req_ei, req); |
| 433 | if (ret) |
| 434 | dev_err(dev, "error %d sending init driver request\n", ret); |
| 435 | else if ((ret = qmi_txn_wait(&txn, timeout))) |
| 436 | dev_err(dev, "error %d awaiting init driver response\n", ret); |
| 437 | |
| 438 | if (!ret) { |
| 439 | ipa_qmi->modem_ready = true; |
| 440 | ipa_qmi_ready(ipa_qmi); /* We might be ready now */ |
| 441 | } else { |
| 442 | /* If any error occurs we need to cancel the transaction */ |
| 443 | qmi_txn_cancel(&txn); |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | /* The modem server is now available. We will send an INIT_DRIVER request |
| 448 | * to the modem, but can't wait for it to complete in this callback thread. |
| 449 | * Schedule a worker on the global workqueue to do that for us. |
| 450 | */ |
| 451 | static int |
| 452 | ipa_client_new_server(struct qmi_handle *qmi, struct qmi_service *svc) |
| 453 | { |
| 454 | struct ipa_qmi *ipa_qmi; |
| 455 | |
| 456 | ipa_qmi = container_of(qmi, struct ipa_qmi, client_handle); |
| 457 | |
| 458 | ipa_qmi->modem_sq.sq_family = AF_QIPCRTR; |
| 459 | ipa_qmi->modem_sq.sq_node = svc->node; |
| 460 | ipa_qmi->modem_sq.sq_port = svc->port; |
| 461 | |
| 462 | schedule_work(&ipa_qmi->init_driver_work); |
| 463 | |
| 464 | return 0; |
| 465 | } |
| 466 | |
Rikard Falkeborn | b5094a3 | 2020-11-23 00:40:30 +0100 | [diff] [blame] | 467 | static const struct qmi_ops ipa_client_ops = { |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 468 | .new_server = ipa_client_new_server, |
| 469 | }; |
| 470 | |
Alex Elder | 63961f5 | 2021-07-26 15:11:32 -0500 | [diff] [blame] | 471 | /* Set up for QMI message exchange */ |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 472 | int ipa_qmi_setup(struct ipa *ipa) |
| 473 | { |
| 474 | struct ipa_qmi *ipa_qmi = &ipa->qmi; |
| 475 | int ret; |
| 476 | |
| 477 | ipa_qmi->initial_boot = true; |
| 478 | |
| 479 | /* The server handle is used to handle the DRIVER_INIT_COMPLETE |
| 480 | * request on the first modem boot. It also receives the |
| 481 | * INDICATION_REGISTER request on the first boot and (optionally) |
| 482 | * subsequent boots. The INIT_COMPLETE indication message is |
| 483 | * sent over the server handle if requested. |
| 484 | */ |
| 485 | ret = qmi_handle_init(&ipa_qmi->server_handle, |
| 486 | IPA_QMI_SERVER_MAX_RCV_SZ, &ipa_server_ops, |
| 487 | ipa_server_msg_handlers); |
| 488 | if (ret) |
| 489 | return ret; |
| 490 | |
| 491 | ret = qmi_add_server(&ipa_qmi->server_handle, IPA_HOST_SERVICE_SVC_ID, |
| 492 | IPA_HOST_SVC_VERS, IPA_HOST_SERVICE_INS_ID); |
| 493 | if (ret) |
| 494 | goto err_server_handle_release; |
| 495 | |
| 496 | /* The client handle is only used for sending an INIT_DRIVER request |
| 497 | * to the modem, and receiving its response message. |
| 498 | */ |
| 499 | ret = qmi_handle_init(&ipa_qmi->client_handle, |
| 500 | IPA_QMI_CLIENT_MAX_RCV_SZ, &ipa_client_ops, |
| 501 | ipa_client_msg_handlers); |
| 502 | if (ret) |
| 503 | goto err_server_handle_release; |
| 504 | |
| 505 | /* We need this ready before the service lookup is added */ |
| 506 | INIT_WORK(&ipa_qmi->init_driver_work, ipa_client_init_driver_work); |
| 507 | |
| 508 | ret = qmi_add_lookup(&ipa_qmi->client_handle, IPA_MODEM_SERVICE_SVC_ID, |
| 509 | IPA_MODEM_SVC_VERS, IPA_MODEM_SERVICE_INS_ID); |
| 510 | if (ret) |
| 511 | goto err_client_handle_release; |
| 512 | |
| 513 | return 0; |
| 514 | |
| 515 | err_client_handle_release: |
| 516 | /* Releasing the handle also removes registered lookups */ |
| 517 | qmi_handle_release(&ipa_qmi->client_handle); |
| 518 | memset(&ipa_qmi->client_handle, 0, sizeof(ipa_qmi->client_handle)); |
| 519 | err_server_handle_release: |
| 520 | /* Releasing the handle also removes registered services */ |
| 521 | qmi_handle_release(&ipa_qmi->server_handle); |
| 522 | memset(&ipa_qmi->server_handle, 0, sizeof(ipa_qmi->server_handle)); |
| 523 | |
| 524 | return ret; |
| 525 | } |
| 526 | |
Alex Elder | 63961f5 | 2021-07-26 15:11:32 -0500 | [diff] [blame] | 527 | /* Tear down IPA QMI handles */ |
Alex Elder | 530f921 | 2020-03-05 22:28:28 -0600 | [diff] [blame] | 528 | void ipa_qmi_teardown(struct ipa *ipa) |
| 529 | { |
| 530 | cancel_work_sync(&ipa->qmi.init_driver_work); |
| 531 | |
| 532 | qmi_handle_release(&ipa->qmi.client_handle); |
| 533 | memset(&ipa->qmi.client_handle, 0, sizeof(ipa->qmi.client_handle)); |
| 534 | |
| 535 | qmi_handle_release(&ipa->qmi.server_handle); |
| 536 | memset(&ipa->qmi.server_handle, 0, sizeof(ipa->qmi.server_handle)); |
| 537 | } |