Chris Lew | 2555cd7 | 2017-04-10 17:11:24 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2014-2017, The Linux Foundation. All rights reserved. |
Chris Lew | fa6135e | 2016-08-01 13:29:46 -0700 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | #include <linux/err.h> |
| 13 | #include <linux/ipc_logging.h> |
| 14 | #include <linux/list.h> |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/random.h> |
| 18 | #include <linux/uio.h> |
| 19 | #include <soc/qcom/glink.h> |
| 20 | #include <soc/qcom/tracer_pkt.h> |
| 21 | #include "glink_loopback_commands.h" |
| 22 | |
| 23 | |
| 24 | /* Number of internal IPC Logging log pages */ |
| 25 | #define GLINK_LBSRV_NUM_LOG_PAGES 3 |
| 26 | |
| 27 | static void *glink_lbsrv_log_ctx; |
| 28 | |
| 29 | #define GLINK_LBSRV_IPC_LOG_STR(x...) do { \ |
| 30 | if (glink_lbsrv_log_ctx) \ |
| 31 | ipc_log_string(glink_lbsrv_log_ctx, x); \ |
| 32 | } while (0) |
| 33 | |
| 34 | #define LBSRV_INFO(x...) GLINK_LBSRV_IPC_LOG_STR("<LBSRV> " x) |
| 35 | |
| 36 | #define LBSRV_ERR(x...) do { \ |
| 37 | pr_err("<LBSRV> " x); \ |
| 38 | GLINK_LBSRV_IPC_LOG_STR("<LBSRV> " x); \ |
| 39 | } while (0) |
| 40 | |
| 41 | enum ch_type { |
| 42 | CTL, |
| 43 | DATA, |
| 44 | }; |
| 45 | |
| 46 | enum buf_type { |
| 47 | LINEAR, |
| 48 | VECTOR, |
| 49 | }; |
| 50 | |
| 51 | struct tx_config_info { |
| 52 | uint32_t random_delay; |
| 53 | uint32_t delay_ms; |
| 54 | uint32_t echo_count; |
| 55 | uint32_t transform_type; |
| 56 | }; |
| 57 | |
| 58 | struct rx_done_config_info { |
| 59 | uint32_t random_delay; |
| 60 | uint32_t delay_ms; |
| 61 | }; |
| 62 | |
| 63 | struct rmt_rx_intent_req_work_info { |
| 64 | size_t req_intent_size; |
| 65 | struct delayed_work work; |
| 66 | struct ch_info *work_ch_info; |
| 67 | }; |
| 68 | |
| 69 | struct queue_rx_intent_work_info { |
| 70 | uint32_t req_id; |
| 71 | bool deferred; |
| 72 | struct ch_info *req_ch_info; |
| 73 | uint32_t num_intents; |
| 74 | uint32_t intent_size; |
| 75 | uint32_t random_delay; |
| 76 | uint32_t delay_ms; |
| 77 | struct delayed_work work; |
| 78 | struct ch_info *work_ch_info; |
| 79 | }; |
| 80 | |
| 81 | struct lbsrv_vec { |
| 82 | uint32_t num_bufs; |
| 83 | struct kvec vec[0]; |
| 84 | }; |
| 85 | |
| 86 | struct tx_work_info { |
| 87 | struct tx_config_info tx_config; |
| 88 | struct delayed_work work; |
| 89 | struct ch_info *tx_ch_info; |
| 90 | void *data; |
| 91 | bool tracer_pkt; |
| 92 | uint32_t buf_type; |
| 93 | size_t size; |
| 94 | void * (*vbuf_provider)(void *iovec, size_t offset, size_t *size); |
| 95 | void * (*pbuf_provider)(void *iovec, size_t offset, size_t *size); |
| 96 | }; |
| 97 | |
| 98 | struct rx_done_work_info { |
| 99 | struct delayed_work work; |
| 100 | struct ch_info *rx_done_ch_info; |
| 101 | void *ptr; |
| 102 | }; |
| 103 | |
| 104 | struct rx_work_info { |
| 105 | struct ch_info *rx_ch_info; |
| 106 | void *pkt_priv; |
| 107 | void *ptr; |
| 108 | bool tracer_pkt; |
| 109 | uint32_t buf_type; |
| 110 | size_t size; |
| 111 | void * (*vbuf_provider)(void *iovec, size_t offset, size_t *size); |
| 112 | void * (*pbuf_provider)(void *iovec, size_t offset, size_t *size); |
| 113 | struct delayed_work work; |
| 114 | }; |
| 115 | |
| 116 | struct ch_info { |
| 117 | struct list_head list; |
| 118 | struct mutex ch_info_lock; |
| 119 | char name[MAX_NAME_LEN]; |
| 120 | char edge[GLINK_NAME_SIZE]; |
| 121 | char transport[GLINK_NAME_SIZE]; |
| 122 | void *handle; |
| 123 | bool fully_opened; |
| 124 | uint32_t type; |
| 125 | struct delayed_work open_work; |
| 126 | struct delayed_work close_work; |
| 127 | struct tx_config_info tx_config; |
| 128 | struct rx_done_config_info rx_done_config; |
| 129 | struct queue_rx_intent_work_info *queue_rx_intent_work_info; |
| 130 | }; |
| 131 | |
| 132 | struct ctl_ch_info { |
| 133 | char name[MAX_NAME_LEN]; |
| 134 | char edge[GLINK_NAME_SIZE]; |
| 135 | char transport[GLINK_NAME_SIZE]; |
| 136 | }; |
| 137 | |
| 138 | static struct ctl_ch_info ctl_ch_tbl[] = { |
| 139 | {"LOCAL_LOOPBACK_SRV", "local", "lloop"}, |
| 140 | {"LOOPBACK_CTL_APSS", "mpss", "smem"}, |
| 141 | {"LOOPBACK_CTL_APSS", "lpass", "smem"}, |
| 142 | {"LOOPBACK_CTL_APSS", "dsps", "smem"}, |
Chris Lew | b99ce08 | 2017-04-25 16:42:00 -0700 | [diff] [blame] | 143 | {"LOOPBACK_CTL_APPS", "cdsp", "smem"}, |
Chris Lew | fa6135e | 2016-08-01 13:29:46 -0700 | [diff] [blame] | 144 | {"LOOPBACK_CTL_APSS", "spss", "mailbox"}, |
Chris Lew | 2555cd7 | 2017-04-10 17:11:24 -0700 | [diff] [blame] | 145 | {"LOOPBACK_CTL_APSS", "wdsp", "spi"}, |
Chris Lew | fa6135e | 2016-08-01 13:29:46 -0700 | [diff] [blame] | 146 | }; |
| 147 | |
| 148 | static DEFINE_MUTEX(ctl_ch_list_lock); |
| 149 | static LIST_HEAD(ctl_ch_list); |
| 150 | static DEFINE_MUTEX(data_ch_list_lock); |
| 151 | static LIST_HEAD(data_ch_list); |
| 152 | |
| 153 | struct workqueue_struct *glink_lbsrv_wq; |
| 154 | |
| 155 | /** |
| 156 | * link_state_work_info - Information about work handling link state updates |
| 157 | * edge: Remote subsystem name in the link. |
| 158 | * transport: Name of the transport/link. |
| 159 | * link_state: State of the transport/link. |
| 160 | * work: Reference to the work item. |
| 161 | */ |
| 162 | struct link_state_work_info { |
| 163 | char edge[GLINK_NAME_SIZE]; |
| 164 | char transport[GLINK_NAME_SIZE]; |
| 165 | enum glink_link_state link_state; |
| 166 | struct delayed_work work; |
| 167 | }; |
| 168 | |
| 169 | static void glink_lbsrv_link_state_cb(struct glink_link_state_cb_info *cb_info, |
| 170 | void *priv); |
| 171 | static struct glink_link_info glink_lbsrv_link_info = { |
| 172 | NULL, NULL, glink_lbsrv_link_state_cb}; |
| 173 | static void *glink_lbsrv_link_state_notif_handle; |
| 174 | |
| 175 | static void glink_lbsrv_open_worker(struct work_struct *work); |
| 176 | static void glink_lbsrv_close_worker(struct work_struct *work); |
| 177 | static void glink_lbsrv_rmt_rx_intent_req_worker(struct work_struct *work); |
| 178 | static void glink_lbsrv_queue_rx_intent_worker(struct work_struct *work); |
| 179 | static void glink_lbsrv_rx_worker(struct work_struct *work); |
| 180 | static void glink_lbsrv_rx_done_worker(struct work_struct *work); |
| 181 | static void glink_lbsrv_tx_worker(struct work_struct *work); |
| 182 | |
| 183 | int glink_lbsrv_send_response(void *handle, uint32_t req_id, uint32_t req_type, |
| 184 | uint32_t response) |
| 185 | { |
| 186 | struct resp *resp_pkt = kzalloc(sizeof(struct resp), GFP_KERNEL); |
| 187 | |
| 188 | if (!resp_pkt) { |
| 189 | LBSRV_ERR("%s: Error allocating response packet\n", __func__); |
| 190 | return -ENOMEM; |
| 191 | } |
| 192 | |
| 193 | resp_pkt->req_id = req_id; |
| 194 | resp_pkt->req_type = req_type; |
| 195 | resp_pkt->response = response; |
| 196 | |
| 197 | return glink_tx(handle, (void *)LINEAR, (void *)resp_pkt, |
| 198 | sizeof(struct resp), 0); |
| 199 | } |
| 200 | |
| 201 | static uint32_t calc_delay_ms(uint32_t random_delay, uint32_t delay_ms) |
| 202 | { |
| 203 | uint32_t tmp_delay_ms; |
| 204 | |
| 205 | if (random_delay && delay_ms) |
| 206 | tmp_delay_ms = prandom_u32() % delay_ms; |
| 207 | else if (random_delay) |
| 208 | tmp_delay_ms = prandom_u32(); |
| 209 | else |
| 210 | tmp_delay_ms = delay_ms; |
| 211 | |
| 212 | return tmp_delay_ms; |
| 213 | } |
| 214 | |
| 215 | static int create_ch_info(char *name, char *edge, char *transport, |
| 216 | uint32_t type, struct ch_info **ret_ch_info) |
| 217 | { |
| 218 | struct ch_info *tmp_ch_info; |
| 219 | |
| 220 | tmp_ch_info = kzalloc(sizeof(struct ch_info), GFP_KERNEL); |
| 221 | if (!tmp_ch_info) { |
| 222 | LBSRV_ERR("%s: Error allocation ch_info\n", __func__); |
| 223 | return -ENOMEM; |
| 224 | } |
| 225 | |
| 226 | INIT_LIST_HEAD(&tmp_ch_info->list); |
| 227 | mutex_init(&tmp_ch_info->ch_info_lock); |
| 228 | strlcpy(tmp_ch_info->name, name, MAX_NAME_LEN); |
| 229 | strlcpy(tmp_ch_info->edge, edge, GLINK_NAME_SIZE); |
| 230 | strlcpy(tmp_ch_info->transport, transport, GLINK_NAME_SIZE); |
| 231 | tmp_ch_info->type = type; |
| 232 | INIT_DELAYED_WORK(&tmp_ch_info->open_work, |
| 233 | glink_lbsrv_open_worker); |
| 234 | INIT_DELAYED_WORK(&tmp_ch_info->close_work, |
| 235 | glink_lbsrv_close_worker); |
| 236 | tmp_ch_info->tx_config.echo_count = 1; |
| 237 | |
| 238 | if (type == CTL) { |
| 239 | mutex_lock(&ctl_ch_list_lock); |
| 240 | list_add_tail(&tmp_ch_info->list, &ctl_ch_list); |
| 241 | mutex_unlock(&ctl_ch_list_lock); |
| 242 | } else if (type == DATA) { |
| 243 | mutex_lock(&data_ch_list_lock); |
| 244 | list_add_tail(&tmp_ch_info->list, &data_ch_list); |
| 245 | mutex_unlock(&data_ch_list_lock); |
| 246 | } else { |
| 247 | LBSRV_ERR("%s:%s:%s %s: Invalid ch type %d\n", transport, |
| 248 | edge, name, __func__, type); |
| 249 | kfree(tmp_ch_info); |
| 250 | return -EINVAL; |
| 251 | } |
| 252 | *ret_ch_info = tmp_ch_info; |
| 253 | return 0; |
| 254 | } |
| 255 | |
| 256 | struct ch_info *lookup_ch_list(char *name, char *edge, char *transport, |
| 257 | uint32_t type) |
| 258 | { |
| 259 | struct list_head *ch_list; |
| 260 | struct mutex *lock; |
| 261 | struct ch_info *tmp_ch_info; |
| 262 | |
| 263 | if (type == DATA) { |
| 264 | ch_list = &data_ch_list; |
| 265 | lock = &data_ch_list_lock; |
| 266 | } else if (type == CTL) { |
| 267 | ch_list = &ctl_ch_list; |
| 268 | lock = &ctl_ch_list_lock; |
| 269 | } else { |
| 270 | LBSRV_ERR("%s:%s:%s %s: Invalid ch type %d\n", transport, |
| 271 | edge, name, __func__, type); |
| 272 | return NULL; |
| 273 | } |
| 274 | |
| 275 | mutex_lock(lock); |
| 276 | list_for_each_entry(tmp_ch_info, ch_list, list) { |
| 277 | if (!strcmp(name, tmp_ch_info->name) && |
| 278 | !strcmp(edge, tmp_ch_info->edge) && |
| 279 | !strcmp(transport, tmp_ch_info->transport)) { |
| 280 | mutex_unlock(lock); |
| 281 | return tmp_ch_info; |
| 282 | } |
| 283 | } |
| 284 | mutex_unlock(lock); |
| 285 | return NULL; |
| 286 | } |
| 287 | |
| 288 | int glink_lbsrv_handle_open_req(struct ch_info *rx_ch_info, |
| 289 | struct open_req req) |
| 290 | { |
| 291 | struct ch_info *tmp_ch_info; |
| 292 | int ret; |
| 293 | char name[MAX_NAME_LEN]; |
| 294 | char *temp; |
| 295 | |
| 296 | strlcpy(name, req.ch_name, MAX_NAME_LEN); |
| 297 | if (!strcmp(rx_ch_info->transport, "lloop")) { |
| 298 | temp = strnstr(name, "_CLNT", MAX_NAME_LEN); |
| 299 | if (temp) |
| 300 | *temp = '\0'; |
| 301 | strlcat(name, "_SRV", MAX_NAME_LEN); |
| 302 | } |
| 303 | LBSRV_INFO("%s:%s:%s %s: delay_ms[%d]\n", |
| 304 | rx_ch_info->transport, rx_ch_info->edge, |
| 305 | name, __func__, req.delay_ms); |
| 306 | tmp_ch_info = lookup_ch_list(name, rx_ch_info->edge, |
| 307 | rx_ch_info->transport, DATA); |
| 308 | if (tmp_ch_info) |
| 309 | goto queue_open_work; |
| 310 | |
| 311 | ret = create_ch_info(name, rx_ch_info->edge, rx_ch_info->transport, |
| 312 | DATA, &tmp_ch_info); |
| 313 | if (ret) |
| 314 | return ret; |
| 315 | queue_open_work: |
| 316 | queue_delayed_work(glink_lbsrv_wq, &tmp_ch_info->open_work, |
| 317 | msecs_to_jiffies(req.delay_ms)); |
| 318 | return 0; |
| 319 | } |
| 320 | |
| 321 | int glink_lbsrv_handle_close_req(struct ch_info *rx_ch_info, |
| 322 | struct close_req req) |
| 323 | { |
| 324 | struct ch_info *tmp_ch_info; |
| 325 | char name[MAX_NAME_LEN]; |
| 326 | char *temp; |
| 327 | |
| 328 | strlcpy(name, req.ch_name, MAX_NAME_LEN); |
| 329 | if (!strcmp(rx_ch_info->transport, "lloop")) { |
| 330 | temp = strnstr(name, "_CLNT", MAX_NAME_LEN); |
| 331 | if (temp) |
| 332 | *temp = '\0'; |
| 333 | strlcat(name, "_SRV", MAX_NAME_LEN); |
| 334 | } |
| 335 | LBSRV_INFO("%s:%s:%s %s: delay_ms[%d]\n", |
| 336 | rx_ch_info->transport, rx_ch_info->edge, |
| 337 | name, __func__, req.delay_ms); |
| 338 | tmp_ch_info = lookup_ch_list(name, rx_ch_info->edge, |
| 339 | rx_ch_info->transport, DATA); |
| 340 | if (tmp_ch_info) |
| 341 | queue_delayed_work(glink_lbsrv_wq, &tmp_ch_info->close_work, |
| 342 | msecs_to_jiffies(req.delay_ms)); |
| 343 | return 0; |
| 344 | } |
| 345 | |
| 346 | int glink_lbsrv_handle_queue_rx_intent_config_req(struct ch_info *rx_ch_info, |
| 347 | struct queue_rx_intent_config_req req, uint32_t req_id) |
| 348 | { |
| 349 | struct ch_info *tmp_ch_info; |
| 350 | struct queue_rx_intent_work_info *tmp_work_info; |
| 351 | char name[MAX_NAME_LEN]; |
| 352 | char *temp; |
| 353 | uint32_t delay_ms; |
| 354 | |
| 355 | strlcpy(name, req.ch_name, MAX_NAME_LEN); |
| 356 | if (!strcmp(rx_ch_info->transport, "lloop")) { |
| 357 | temp = strnstr(name, "_CLNT", MAX_NAME_LEN); |
| 358 | if (temp) |
| 359 | *temp = '\0'; |
| 360 | strlcat(name, "_SRV", MAX_NAME_LEN); |
| 361 | } |
| 362 | LBSRV_INFO("%s:%s:%s %s: num_intents[%d] size[%d]\n", |
| 363 | rx_ch_info->transport, rx_ch_info->edge, name, __func__, |
| 364 | req.num_intents, req.intent_size); |
| 365 | tmp_ch_info = lookup_ch_list(name, rx_ch_info->edge, |
| 366 | rx_ch_info->transport, DATA); |
| 367 | if (!tmp_ch_info) { |
| 368 | LBSRV_ERR("%s:%s:%s %s: Channel info not found\n", |
| 369 | rx_ch_info->transport, rx_ch_info->edge, |
| 370 | name, __func__); |
| 371 | return -EINVAL; |
| 372 | } |
| 373 | |
| 374 | tmp_work_info = kzalloc(sizeof(struct queue_rx_intent_work_info), |
| 375 | GFP_KERNEL); |
| 376 | if (!tmp_work_info) { |
| 377 | LBSRV_ERR("%s: Error allocating work_info\n", __func__); |
| 378 | return -ENOMEM; |
| 379 | } |
| 380 | |
| 381 | tmp_work_info->req_id = req_id; |
| 382 | tmp_work_info->req_ch_info = rx_ch_info; |
| 383 | tmp_work_info->num_intents = req.num_intents; |
| 384 | tmp_work_info->intent_size = req.intent_size; |
| 385 | tmp_work_info->random_delay = req.random_delay; |
| 386 | tmp_work_info->delay_ms = req.delay_ms; |
| 387 | INIT_DELAYED_WORK(&tmp_work_info->work, |
| 388 | glink_lbsrv_queue_rx_intent_worker); |
| 389 | tmp_work_info->work_ch_info = tmp_ch_info; |
| 390 | |
| 391 | mutex_lock(&tmp_ch_info->ch_info_lock); |
| 392 | if (tmp_ch_info->fully_opened) { |
| 393 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 394 | delay_ms = calc_delay_ms(tmp_work_info->random_delay, |
| 395 | tmp_work_info->delay_ms); |
| 396 | queue_delayed_work(glink_lbsrv_wq, &tmp_work_info->work, |
| 397 | msecs_to_jiffies(delay_ms)); |
| 398 | |
| 399 | if (tmp_work_info->random_delay || tmp_work_info->delay_ms) |
| 400 | glink_lbsrv_send_response(rx_ch_info->handle, req_id, |
| 401 | QUEUE_RX_INTENT_CONFIG, 0); |
| 402 | } else { |
| 403 | tmp_work_info->deferred = true; |
| 404 | tmp_ch_info->queue_rx_intent_work_info = tmp_work_info; |
| 405 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 406 | |
| 407 | glink_lbsrv_send_response(rx_ch_info->handle, req_id, |
| 408 | QUEUE_RX_INTENT_CONFIG, 0); |
| 409 | } |
| 410 | |
| 411 | return 0; |
| 412 | } |
| 413 | |
| 414 | int glink_lbsrv_handle_tx_config_req(struct ch_info *rx_ch_info, |
| 415 | struct tx_config_req req) |
| 416 | { |
| 417 | struct ch_info *tmp_ch_info; |
| 418 | char name[MAX_NAME_LEN]; |
| 419 | char *temp; |
| 420 | |
| 421 | strlcpy(name, req.ch_name, MAX_NAME_LEN); |
| 422 | if (!strcmp(rx_ch_info->transport, "lloop")) { |
| 423 | temp = strnstr(name, "_CLNT", MAX_NAME_LEN); |
| 424 | if (temp) |
| 425 | *temp = '\0'; |
| 426 | strlcat(name, "_SRV", MAX_NAME_LEN); |
| 427 | } |
| 428 | LBSRV_INFO("%s:%s:%s %s: echo_count[%d] transform[%d]\n", |
| 429 | rx_ch_info->transport, rx_ch_info->edge, name, __func__, |
| 430 | req.echo_count, req.transform_type); |
| 431 | tmp_ch_info = lookup_ch_list(name, rx_ch_info->edge, |
| 432 | rx_ch_info->transport, DATA); |
| 433 | if (!tmp_ch_info) { |
| 434 | LBSRV_ERR("%s:%s:%s %s: Channel info not found\n", |
| 435 | rx_ch_info->transport, rx_ch_info->edge, |
| 436 | name, __func__); |
| 437 | return -EINVAL; |
| 438 | } |
| 439 | |
| 440 | mutex_lock(&tmp_ch_info->ch_info_lock); |
| 441 | tmp_ch_info->tx_config.random_delay = req.random_delay; |
| 442 | tmp_ch_info->tx_config.delay_ms = req.delay_ms; |
| 443 | tmp_ch_info->tx_config.echo_count = req.echo_count; |
| 444 | tmp_ch_info->tx_config.transform_type = req.transform_type; |
| 445 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 446 | return 0; |
| 447 | } |
| 448 | |
| 449 | int glink_lbsrv_handle_rx_done_config_req(struct ch_info *rx_ch_info, |
| 450 | struct rx_done_config_req req) |
| 451 | { |
| 452 | struct ch_info *tmp_ch_info; |
| 453 | char name[MAX_NAME_LEN]; |
| 454 | char *temp; |
| 455 | |
| 456 | strlcpy(name, req.ch_name, MAX_NAME_LEN); |
| 457 | if (!strcmp(rx_ch_info->transport, "lloop")) { |
| 458 | temp = strnstr(name, "_CLNT", MAX_NAME_LEN); |
| 459 | if (temp) |
| 460 | *temp = '\0'; |
| 461 | strlcat(name, "_SRV", MAX_NAME_LEN); |
| 462 | } |
| 463 | LBSRV_INFO("%s:%s:%s %s: delay_ms[%d] random_delay[%d]\n", |
| 464 | rx_ch_info->transport, rx_ch_info->edge, name, |
| 465 | __func__, req.delay_ms, req.random_delay); |
| 466 | tmp_ch_info = lookup_ch_list(name, rx_ch_info->edge, |
| 467 | rx_ch_info->transport, DATA); |
| 468 | if (!tmp_ch_info) { |
| 469 | LBSRV_ERR("%s:%s:%s %s: Channel info not found\n", |
| 470 | rx_ch_info->transport, rx_ch_info->edge, |
| 471 | name, __func__); |
| 472 | return -EINVAL; |
| 473 | } |
| 474 | |
| 475 | mutex_lock(&tmp_ch_info->ch_info_lock); |
| 476 | tmp_ch_info->rx_done_config.random_delay = req.random_delay; |
| 477 | tmp_ch_info->rx_done_config.delay_ms = req.delay_ms; |
| 478 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 479 | return 0; |
| 480 | } |
| 481 | |
| 482 | /** |
| 483 | * glink_lbsrv_handle_req() - Handle the request commands received by clients |
| 484 | * |
| 485 | * rx_ch_info: Channel info on which the request is received |
| 486 | * pkt: Request structure received from client |
| 487 | * |
| 488 | * This function handles the all supported request types received from client |
| 489 | * and send the response back to client |
| 490 | */ |
| 491 | void glink_lbsrv_handle_req(struct ch_info *rx_ch_info, struct req pkt) |
| 492 | { |
| 493 | int ret; |
| 494 | |
| 495 | LBSRV_INFO("%s:%s:%s %s: Request packet type[%d]:id[%d]\n", |
| 496 | rx_ch_info->transport, rx_ch_info->edge, |
| 497 | rx_ch_info->name, __func__, pkt.hdr.req_type, |
| 498 | pkt.hdr.req_id); |
| 499 | switch (pkt.hdr.req_type) { |
| 500 | case OPEN: |
| 501 | ret = glink_lbsrv_handle_open_req(rx_ch_info, |
| 502 | pkt.payload.open); |
| 503 | break; |
| 504 | case CLOSE: |
| 505 | ret = glink_lbsrv_handle_close_req(rx_ch_info, |
| 506 | pkt.payload.close); |
| 507 | break; |
| 508 | case QUEUE_RX_INTENT_CONFIG: |
| 509 | ret = glink_lbsrv_handle_queue_rx_intent_config_req( |
| 510 | rx_ch_info, pkt.payload.q_rx_int_conf, pkt.hdr.req_id); |
| 511 | break; |
| 512 | case TX_CONFIG: |
| 513 | ret = glink_lbsrv_handle_tx_config_req(rx_ch_info, |
| 514 | pkt.payload.tx_conf); |
| 515 | break; |
| 516 | case RX_DONE_CONFIG: |
| 517 | ret = glink_lbsrv_handle_rx_done_config_req(rx_ch_info, |
| 518 | pkt.payload.rx_done_conf); |
| 519 | break; |
| 520 | default: |
| 521 | LBSRV_ERR("%s:%s:%s %s: Invalid Request type [%d]\n", |
| 522 | rx_ch_info->transport, rx_ch_info->edge, |
| 523 | rx_ch_info->name, __func__, pkt.hdr.req_type); |
| 524 | ret = -1; |
| 525 | break; |
| 526 | } |
| 527 | |
| 528 | if (pkt.hdr.req_type != QUEUE_RX_INTENT_CONFIG) |
| 529 | glink_lbsrv_send_response(rx_ch_info->handle, pkt.hdr.req_id, |
| 530 | pkt.hdr.req_type, ret); |
| 531 | } |
| 532 | |
| 533 | static void *glink_lbsrv_vbuf_provider(void *iovec, size_t offset, |
| 534 | size_t *buf_size) |
| 535 | { |
| 536 | struct lbsrv_vec *tmp_vec_info = (struct lbsrv_vec *)iovec; |
| 537 | uint32_t i; |
| 538 | size_t temp_size = 0; |
| 539 | |
| 540 | for (i = 0; i < tmp_vec_info->num_bufs; i++) { |
| 541 | temp_size += tmp_vec_info->vec[i].iov_len; |
| 542 | if (offset >= temp_size) |
| 543 | continue; |
| 544 | *buf_size = temp_size - offset; |
| 545 | return (void *)tmp_vec_info->vec[i].iov_base + |
| 546 | tmp_vec_info->vec[i].iov_len - *buf_size; |
| 547 | } |
| 548 | *buf_size = 0; |
| 549 | return NULL; |
| 550 | } |
| 551 | |
| 552 | static void glink_lbsrv_free_data(void *data, uint32_t buf_type) |
| 553 | { |
| 554 | struct lbsrv_vec *tmp_vec_info; |
| 555 | uint32_t i; |
| 556 | |
| 557 | if (buf_type == LINEAR) { |
| 558 | kfree(data); |
| 559 | } else { |
| 560 | tmp_vec_info = (struct lbsrv_vec *)data; |
| 561 | for (i = 0; i < tmp_vec_info->num_bufs; i++) { |
| 562 | kfree(tmp_vec_info->vec[i].iov_base); |
| 563 | tmp_vec_info->vec[i].iov_base = NULL; |
| 564 | } |
| 565 | kfree(tmp_vec_info); |
| 566 | } |
| 567 | } |
| 568 | |
| 569 | static void *copy_linear_data(struct rx_work_info *tmp_rx_work_info) |
| 570 | { |
| 571 | char *data; |
| 572 | struct ch_info *rx_ch_info = tmp_rx_work_info->rx_ch_info; |
| 573 | |
| 574 | data = kmalloc(tmp_rx_work_info->size, GFP_KERNEL); |
| 575 | if (data) |
| 576 | memcpy(data, tmp_rx_work_info->ptr, tmp_rx_work_info->size); |
| 577 | else |
| 578 | LBSRV_ERR("%s:%s:%s %s: Error allocating the data\n", |
| 579 | rx_ch_info->transport, rx_ch_info->edge, |
| 580 | rx_ch_info->name, __func__); |
| 581 | return data; |
| 582 | } |
| 583 | |
| 584 | static void *copy_vector_data(struct rx_work_info *tmp_rx_work_info) |
| 585 | { |
| 586 | uint32_t num_bufs = 0; |
| 587 | struct ch_info *rx_ch_info = tmp_rx_work_info->rx_ch_info; |
| 588 | struct lbsrv_vec *tmp_vec_info; |
| 589 | void *buf, *pbuf, *dest_buf; |
| 590 | size_t offset = 0; |
| 591 | size_t buf_size; |
| 592 | uint32_t i; |
| 593 | |
| 594 | do { |
| 595 | if (tmp_rx_work_info->vbuf_provider) |
| 596 | buf = tmp_rx_work_info->vbuf_provider( |
| 597 | tmp_rx_work_info->ptr, offset, &buf_size); |
| 598 | else |
| 599 | buf = tmp_rx_work_info->pbuf_provider( |
| 600 | tmp_rx_work_info->ptr, offset, &buf_size); |
| 601 | if (!buf) |
| 602 | break; |
| 603 | offset += buf_size; |
| 604 | num_bufs++; |
| 605 | } while (buf); |
| 606 | |
| 607 | tmp_vec_info = kzalloc(sizeof(*tmp_vec_info) + |
| 608 | num_bufs * sizeof(struct kvec), GFP_KERNEL); |
| 609 | if (!tmp_vec_info) { |
| 610 | LBSRV_ERR("%s:%s:%s %s: Error allocating vector info\n", |
| 611 | rx_ch_info->transport, rx_ch_info->edge, |
| 612 | rx_ch_info->name, __func__); |
| 613 | return NULL; |
| 614 | } |
| 615 | tmp_vec_info->num_bufs = num_bufs; |
| 616 | |
| 617 | offset = 0; |
| 618 | for (i = 0; i < num_bufs; i++) { |
| 619 | if (tmp_rx_work_info->vbuf_provider) { |
| 620 | buf = tmp_rx_work_info->vbuf_provider( |
| 621 | tmp_rx_work_info->ptr, offset, &buf_size); |
| 622 | } else { |
| 623 | pbuf = tmp_rx_work_info->pbuf_provider( |
| 624 | tmp_rx_work_info->ptr, offset, &buf_size); |
| 625 | buf = phys_to_virt((unsigned long)pbuf); |
| 626 | } |
| 627 | dest_buf = kmalloc(buf_size, GFP_KERNEL); |
| 628 | if (!dest_buf) { |
| 629 | LBSRV_ERR("%s:%s:%s %s: Error allocating data\n", |
| 630 | rx_ch_info->transport, rx_ch_info->edge, |
| 631 | rx_ch_info->name, __func__); |
| 632 | goto out_copy_vector_data; |
| 633 | } |
| 634 | memcpy(dest_buf, buf, buf_size); |
| 635 | tmp_vec_info->vec[i].iov_base = dest_buf; |
| 636 | tmp_vec_info->vec[i].iov_len = buf_size; |
| 637 | offset += buf_size; |
| 638 | } |
| 639 | return tmp_vec_info; |
| 640 | out_copy_vector_data: |
| 641 | glink_lbsrv_free_data((void *)tmp_vec_info, VECTOR); |
| 642 | return NULL; |
| 643 | } |
| 644 | |
| 645 | static void *glink_lbsrv_copy_data(struct rx_work_info *tmp_rx_work_info) |
| 646 | { |
| 647 | if (tmp_rx_work_info->buf_type == LINEAR) |
| 648 | return copy_linear_data(tmp_rx_work_info); |
| 649 | else |
| 650 | return copy_vector_data(tmp_rx_work_info); |
| 651 | } |
| 652 | |
| 653 | static int glink_lbsrv_handle_data(struct rx_work_info *tmp_rx_work_info) |
| 654 | { |
| 655 | void *data; |
| 656 | int ret; |
| 657 | struct ch_info *rx_ch_info = tmp_rx_work_info->rx_ch_info; |
| 658 | struct tx_work_info *tmp_tx_work_info; |
| 659 | struct rx_done_work_info *tmp_rx_done_work_info; |
| 660 | uint32_t delay_ms; |
| 661 | |
| 662 | data = glink_lbsrv_copy_data(tmp_rx_work_info); |
| 663 | if (!data) { |
| 664 | ret = -ENOMEM; |
| 665 | goto out_handle_data; |
| 666 | } |
| 667 | |
| 668 | tmp_rx_done_work_info = kmalloc(sizeof(struct rx_done_work_info), |
| 669 | GFP_KERNEL); |
| 670 | if (!tmp_rx_done_work_info) { |
| 671 | LBSRV_ERR("%s:%s:%s %s: Error allocating rx_done_work_info\n", |
| 672 | rx_ch_info->transport, rx_ch_info->edge, |
| 673 | rx_ch_info->name, __func__); |
| 674 | glink_lbsrv_free_data(data, tmp_rx_work_info->buf_type); |
| 675 | ret = -ENOMEM; |
| 676 | goto out_handle_data; |
| 677 | } |
| 678 | INIT_DELAYED_WORK(&tmp_rx_done_work_info->work, |
| 679 | glink_lbsrv_rx_done_worker); |
| 680 | tmp_rx_done_work_info->rx_done_ch_info = rx_ch_info; |
| 681 | tmp_rx_done_work_info->ptr = tmp_rx_work_info->ptr; |
| 682 | delay_ms = calc_delay_ms(rx_ch_info->rx_done_config.random_delay, |
| 683 | rx_ch_info->rx_done_config.delay_ms); |
| 684 | queue_delayed_work(glink_lbsrv_wq, &tmp_rx_done_work_info->work, |
| 685 | msecs_to_jiffies(delay_ms)); |
| 686 | |
| 687 | tmp_tx_work_info = kmalloc(sizeof(struct tx_work_info), GFP_KERNEL); |
| 688 | if (!tmp_tx_work_info) { |
| 689 | LBSRV_ERR("%s:%s:%s %s: Error allocating tx_work_info\n", |
| 690 | rx_ch_info->transport, rx_ch_info->edge, |
| 691 | rx_ch_info->name, __func__); |
| 692 | glink_lbsrv_free_data(data, tmp_rx_work_info->buf_type); |
| 693 | return -ENOMEM; |
| 694 | } |
| 695 | mutex_lock(&rx_ch_info->ch_info_lock); |
| 696 | tmp_tx_work_info->tx_config.random_delay = |
| 697 | rx_ch_info->tx_config.random_delay; |
| 698 | tmp_tx_work_info->tx_config.delay_ms = rx_ch_info->tx_config.delay_ms; |
| 699 | tmp_tx_work_info->tx_config.echo_count = |
| 700 | rx_ch_info->tx_config.echo_count; |
| 701 | tmp_tx_work_info->tx_config.transform_type = |
| 702 | rx_ch_info->tx_config.transform_type; |
| 703 | mutex_unlock(&rx_ch_info->ch_info_lock); |
| 704 | INIT_DELAYED_WORK(&tmp_tx_work_info->work, glink_lbsrv_tx_worker); |
| 705 | tmp_tx_work_info->tx_ch_info = rx_ch_info; |
| 706 | tmp_tx_work_info->data = data; |
| 707 | tmp_tx_work_info->tracer_pkt = tmp_rx_work_info->tracer_pkt; |
| 708 | tmp_tx_work_info->buf_type = tmp_rx_work_info->buf_type; |
| 709 | tmp_tx_work_info->size = tmp_rx_work_info->size; |
| 710 | if (tmp_tx_work_info->buf_type == VECTOR) |
| 711 | tmp_tx_work_info->vbuf_provider = glink_lbsrv_vbuf_provider; |
| 712 | else |
| 713 | tmp_tx_work_info->vbuf_provider = NULL; |
| 714 | tmp_tx_work_info->pbuf_provider = NULL; |
| 715 | delay_ms = calc_delay_ms(tmp_tx_work_info->tx_config.random_delay, |
| 716 | tmp_tx_work_info->tx_config.delay_ms); |
| 717 | queue_delayed_work(glink_lbsrv_wq, &tmp_tx_work_info->work, |
| 718 | msecs_to_jiffies(delay_ms)); |
| 719 | return 0; |
| 720 | out_handle_data: |
| 721 | glink_rx_done(rx_ch_info->handle, tmp_rx_work_info->ptr, false); |
| 722 | return ret; |
| 723 | } |
| 724 | |
| 725 | void glink_lpbsrv_notify_rx(void *handle, const void *priv, |
| 726 | const void *pkt_priv, const void *ptr, size_t size) |
| 727 | { |
| 728 | struct rx_work_info *tmp_work_info; |
| 729 | struct ch_info *rx_ch_info = (struct ch_info *)priv; |
| 730 | |
| 731 | LBSRV_INFO( |
| 732 | "%s:%s:%s %s: end (Success) RX priv[%p] data[%p] size[%zu]\n", |
| 733 | rx_ch_info->transport, rx_ch_info->edge, rx_ch_info->name, |
| 734 | __func__, pkt_priv, (char *)ptr, size); |
| 735 | tmp_work_info = kzalloc(sizeof(struct rx_work_info), GFP_ATOMIC); |
| 736 | if (!tmp_work_info) { |
| 737 | LBSRV_ERR("%s:%s:%s %s: Error allocating rx_work\n", |
| 738 | rx_ch_info->transport, rx_ch_info->edge, |
| 739 | rx_ch_info->name, __func__); |
| 740 | return; |
| 741 | } |
| 742 | |
| 743 | tmp_work_info->rx_ch_info = rx_ch_info; |
| 744 | tmp_work_info->pkt_priv = (void *)pkt_priv; |
| 745 | tmp_work_info->ptr = (void *)ptr; |
| 746 | tmp_work_info->buf_type = LINEAR; |
| 747 | tmp_work_info->size = size; |
| 748 | INIT_DELAYED_WORK(&tmp_work_info->work, glink_lbsrv_rx_worker); |
| 749 | queue_delayed_work(glink_lbsrv_wq, &tmp_work_info->work, 0); |
| 750 | } |
| 751 | |
| 752 | void glink_lpbsrv_notify_rxv(void *handle, const void *priv, |
| 753 | const void *pkt_priv, void *ptr, size_t size, |
| 754 | void * (*vbuf_provider)(void *iovec, size_t offset, size_t *size), |
| 755 | void * (*pbuf_provider)(void *iovec, size_t offset, size_t *size)) |
| 756 | { |
| 757 | struct rx_work_info *tmp_work_info; |
| 758 | struct ch_info *rx_ch_info = (struct ch_info *)priv; |
| 759 | |
| 760 | LBSRV_INFO("%s:%s:%s %s: priv[%p] data[%p] size[%zu]\n", |
| 761 | rx_ch_info->transport, rx_ch_info->edge, rx_ch_info->name, |
| 762 | __func__, pkt_priv, (char *)ptr, size); |
| 763 | tmp_work_info = kzalloc(sizeof(struct rx_work_info), GFP_ATOMIC); |
| 764 | if (!tmp_work_info) { |
| 765 | LBSRV_ERR("%s:%s:%s %s: Error allocating rx_work\n", |
| 766 | rx_ch_info->transport, rx_ch_info->edge, |
| 767 | rx_ch_info->name, __func__); |
| 768 | return; |
| 769 | } |
| 770 | |
| 771 | tmp_work_info->rx_ch_info = rx_ch_info; |
| 772 | tmp_work_info->pkt_priv = (void *)pkt_priv; |
| 773 | tmp_work_info->ptr = (void *)ptr; |
| 774 | tmp_work_info->buf_type = VECTOR; |
| 775 | tmp_work_info->size = size; |
| 776 | tmp_work_info->vbuf_provider = vbuf_provider; |
| 777 | tmp_work_info->pbuf_provider = pbuf_provider; |
| 778 | INIT_DELAYED_WORK(&tmp_work_info->work, glink_lbsrv_rx_worker); |
| 779 | queue_delayed_work(glink_lbsrv_wq, &tmp_work_info->work, 0); |
| 780 | } |
| 781 | |
| 782 | void glink_lpbsrv_notify_rx_tp(void *handle, const void *priv, |
| 783 | const void *pkt_priv, const void *ptr, size_t size) |
| 784 | { |
| 785 | struct rx_work_info *tmp_work_info; |
| 786 | struct ch_info *rx_ch_info = (struct ch_info *)priv; |
| 787 | |
| 788 | LBSRV_INFO( |
| 789 | "%s:%s:%s %s: end (Success) RX priv[%p] data[%p] size[%zu]\n", |
| 790 | rx_ch_info->transport, rx_ch_info->edge, rx_ch_info->name, |
| 791 | __func__, pkt_priv, (char *)ptr, size); |
| 792 | tracer_pkt_log_event((void *)ptr, LOOPBACK_SRV_RX); |
| 793 | tmp_work_info = kmalloc(sizeof(struct rx_work_info), GFP_ATOMIC); |
| 794 | if (!tmp_work_info) { |
| 795 | LBSRV_ERR("%s:%s:%s %s: Error allocating rx_work\n", |
| 796 | rx_ch_info->transport, rx_ch_info->edge, |
| 797 | rx_ch_info->name, __func__); |
| 798 | return; |
| 799 | } |
| 800 | |
| 801 | tmp_work_info->rx_ch_info = rx_ch_info; |
| 802 | tmp_work_info->pkt_priv = (void *)pkt_priv; |
| 803 | tmp_work_info->ptr = (void *)ptr; |
| 804 | tmp_work_info->tracer_pkt = true; |
| 805 | tmp_work_info->buf_type = LINEAR; |
| 806 | tmp_work_info->size = size; |
| 807 | INIT_DELAYED_WORK(&tmp_work_info->work, glink_lbsrv_rx_worker); |
| 808 | queue_delayed_work(glink_lbsrv_wq, &tmp_work_info->work, 0); |
| 809 | } |
| 810 | |
| 811 | void glink_lpbsrv_notify_tx_done(void *handle, const void *priv, |
| 812 | const void *pkt_priv, const void *ptr) |
| 813 | { |
| 814 | struct ch_info *tx_done_ch_info = (struct ch_info *)priv; |
| 815 | |
| 816 | LBSRV_INFO("%s:%s:%s %s: end (Success) TX_DONE ptr[%p]\n", |
| 817 | tx_done_ch_info->transport, tx_done_ch_info->edge, |
| 818 | tx_done_ch_info->name, __func__, ptr); |
| 819 | |
| 820 | if (pkt_priv != (const void *)0xFFFFFFFF) |
| 821 | glink_lbsrv_free_data((void *)ptr, |
| 822 | (uint32_t)(uintptr_t)pkt_priv); |
| 823 | } |
| 824 | |
| 825 | void glink_lpbsrv_notify_state(void *handle, const void *priv, |
| 826 | unsigned int event) |
| 827 | { |
| 828 | int ret; |
| 829 | uint32_t delay_ms; |
| 830 | struct ch_info *tmp_ch_info = (struct ch_info *)priv; |
| 831 | struct queue_rx_intent_work_info *tmp_work_info = NULL; |
| 832 | |
| 833 | LBSRV_INFO("%s:%s:%s %s: event[%d]\n", |
| 834 | tmp_ch_info->transport, tmp_ch_info->edge, |
| 835 | tmp_ch_info->name, __func__, event); |
| 836 | if (tmp_ch_info->type == CTL) { |
| 837 | if (event == GLINK_CONNECTED) { |
| 838 | ret = glink_queue_rx_intent(handle, |
| 839 | priv, sizeof(struct req)); |
| 840 | LBSRV_INFO( |
| 841 | "%s:%s:%s %s: QUEUE RX INTENT size[%zu] ret[%d]\n", |
| 842 | tmp_ch_info->transport, |
| 843 | tmp_ch_info->edge, |
| 844 | tmp_ch_info->name, |
| 845 | __func__, sizeof(struct req), ret); |
| 846 | } else if (event == GLINK_LOCAL_DISCONNECTED) { |
| 847 | queue_delayed_work(glink_lbsrv_wq, |
| 848 | &tmp_ch_info->open_work, |
| 849 | msecs_to_jiffies(0)); |
| 850 | } else if (event == GLINK_REMOTE_DISCONNECTED) |
| 851 | if (!IS_ERR_OR_NULL(tmp_ch_info->handle)) |
| 852 | queue_delayed_work(glink_lbsrv_wq, |
| 853 | &tmp_ch_info->close_work, 0); |
| 854 | } else if (tmp_ch_info->type == DATA) { |
| 855 | |
| 856 | if (event == GLINK_CONNECTED) { |
| 857 | mutex_lock(&tmp_ch_info->ch_info_lock); |
| 858 | tmp_ch_info->fully_opened = true; |
| 859 | tmp_work_info = tmp_ch_info->queue_rx_intent_work_info; |
| 860 | tmp_ch_info->queue_rx_intent_work_info = NULL; |
| 861 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 862 | |
| 863 | if (tmp_work_info) { |
| 864 | delay_ms = calc_delay_ms( |
| 865 | tmp_work_info->random_delay, |
| 866 | tmp_work_info->delay_ms); |
| 867 | queue_delayed_work(glink_lbsrv_wq, |
| 868 | &tmp_work_info->work, |
| 869 | msecs_to_jiffies(delay_ms)); |
| 870 | } |
| 871 | } else if (event == GLINK_LOCAL_DISCONNECTED || |
| 872 | event == GLINK_REMOTE_DISCONNECTED) { |
| 873 | |
| 874 | mutex_lock(&tmp_ch_info->ch_info_lock); |
| 875 | tmp_ch_info->fully_opened = false; |
| 876 | /* |
| 877 | * If the state has changed to LOCAL_DISCONNECTED, |
| 878 | * the channel has been fully closed and can now be |
| 879 | * re-opened. If the handle value is -EBUSY, an earlier |
| 880 | * open request failed because the channel was in the |
| 881 | * process of closing. Requeue the work from the open |
| 882 | * request. |
| 883 | */ |
| 884 | if (event == GLINK_LOCAL_DISCONNECTED && |
| 885 | tmp_ch_info->handle == ERR_PTR(-EBUSY)) { |
| 886 | queue_delayed_work(glink_lbsrv_wq, |
| 887 | &tmp_ch_info->open_work, |
| 888 | msecs_to_jiffies(0)); |
| 889 | } |
| 890 | if (event == GLINK_REMOTE_DISCONNECTED) |
| 891 | if (!IS_ERR_OR_NULL(tmp_ch_info->handle)) |
| 892 | queue_delayed_work( |
| 893 | glink_lbsrv_wq, |
| 894 | &tmp_ch_info->close_work, 0); |
| 895 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 896 | } |
| 897 | } |
| 898 | } |
| 899 | |
| 900 | bool glink_lpbsrv_rmt_rx_intent_req_cb(void *handle, const void *priv, |
| 901 | size_t sz) |
| 902 | { |
| 903 | struct rmt_rx_intent_req_work_info *tmp_work_info; |
| 904 | struct ch_info *tmp_ch_info = (struct ch_info *)priv; |
| 905 | |
| 906 | LBSRV_INFO("%s:%s:%s %s: QUEUE RX INTENT to receive size[%zu]\n", |
| 907 | tmp_ch_info->transport, tmp_ch_info->edge, tmp_ch_info->name, |
| 908 | __func__, sz); |
| 909 | |
| 910 | tmp_work_info = kmalloc(sizeof(struct rmt_rx_intent_req_work_info), |
| 911 | GFP_ATOMIC); |
| 912 | if (!tmp_work_info) { |
| 913 | LBSRV_ERR("%s:%s:%s %s: Error allocating rx_work\n", |
| 914 | tmp_ch_info->transport, tmp_ch_info->edge, |
| 915 | tmp_ch_info->name, __func__); |
| 916 | return false; |
| 917 | } |
| 918 | tmp_work_info->req_intent_size = sz; |
| 919 | tmp_work_info->work_ch_info = tmp_ch_info; |
| 920 | |
| 921 | INIT_DELAYED_WORK(&tmp_work_info->work, |
| 922 | glink_lbsrv_rmt_rx_intent_req_worker); |
| 923 | queue_delayed_work(glink_lbsrv_wq, &tmp_work_info->work, 0); |
| 924 | return true; |
| 925 | } |
| 926 | |
| 927 | void glink_lpbsrv_notify_rx_sigs(void *handle, const void *priv, |
| 928 | uint32_t old_sigs, uint32_t new_sigs) |
| 929 | { |
| 930 | LBSRV_INFO(" %s old_sigs[0x%x] New_sigs[0x%x]\n", |
| 931 | __func__, old_sigs, new_sigs); |
| 932 | glink_sigs_set(handle, new_sigs); |
| 933 | } |
| 934 | |
| 935 | static void glink_lbsrv_rx_worker(struct work_struct *work) |
| 936 | { |
| 937 | struct delayed_work *rx_work = to_delayed_work(work); |
| 938 | struct rx_work_info *tmp_rx_work_info = |
| 939 | container_of(rx_work, struct rx_work_info, work); |
| 940 | struct ch_info *rx_ch_info = tmp_rx_work_info->rx_ch_info; |
| 941 | struct req request_pkt; |
| 942 | int ret; |
| 943 | |
| 944 | if (rx_ch_info->type == CTL) { |
| 945 | request_pkt = *((struct req *)tmp_rx_work_info->ptr); |
| 946 | glink_rx_done(rx_ch_info->handle, tmp_rx_work_info->ptr, false); |
| 947 | ret = glink_queue_rx_intent(rx_ch_info->handle, rx_ch_info, |
| 948 | sizeof(struct req)); |
| 949 | LBSRV_INFO("%s:%s:%s %s: QUEUE RX INTENT size[%zu] ret[%d]\n", |
| 950 | rx_ch_info->transport, rx_ch_info->edge, |
| 951 | rx_ch_info->name, __func__, |
| 952 | sizeof(struct req), ret); |
| 953 | glink_lbsrv_handle_req(rx_ch_info, request_pkt); |
| 954 | } else { |
| 955 | ret = glink_lbsrv_handle_data(tmp_rx_work_info); |
| 956 | } |
| 957 | kfree(tmp_rx_work_info); |
| 958 | } |
| 959 | |
| 960 | static void glink_lbsrv_open_worker(struct work_struct *work) |
| 961 | { |
| 962 | struct delayed_work *open_work = to_delayed_work(work); |
| 963 | struct ch_info *tmp_ch_info = |
| 964 | container_of(open_work, struct ch_info, open_work); |
| 965 | struct glink_open_config open_cfg; |
| 966 | |
| 967 | LBSRV_INFO("%s: glink_loopback_server_init\n", __func__); |
| 968 | mutex_lock(&tmp_ch_info->ch_info_lock); |
| 969 | if (!IS_ERR_OR_NULL(tmp_ch_info->handle)) { |
| 970 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 971 | return; |
| 972 | } |
| 973 | |
| 974 | memset(&open_cfg, 0, sizeof(struct glink_open_config)); |
| 975 | open_cfg.transport = tmp_ch_info->transport; |
| 976 | open_cfg.edge = tmp_ch_info->edge; |
| 977 | open_cfg.name = tmp_ch_info->name; |
| 978 | |
| 979 | open_cfg.notify_rx = glink_lpbsrv_notify_rx; |
| 980 | if (tmp_ch_info->type == DATA) |
| 981 | open_cfg.notify_rxv = glink_lpbsrv_notify_rxv; |
| 982 | open_cfg.notify_tx_done = glink_lpbsrv_notify_tx_done; |
| 983 | open_cfg.notify_state = glink_lpbsrv_notify_state; |
| 984 | open_cfg.notify_rx_intent_req = glink_lpbsrv_rmt_rx_intent_req_cb; |
| 985 | open_cfg.notify_rx_sigs = glink_lpbsrv_notify_rx_sigs; |
| 986 | open_cfg.notify_rx_abort = NULL; |
| 987 | open_cfg.notify_tx_abort = NULL; |
| 988 | open_cfg.notify_rx_tracer_pkt = glink_lpbsrv_notify_rx_tp; |
| 989 | open_cfg.priv = tmp_ch_info; |
| 990 | |
| 991 | tmp_ch_info->handle = glink_open(&open_cfg); |
| 992 | if (IS_ERR_OR_NULL(tmp_ch_info->handle)) { |
| 993 | LBSRV_ERR("%s:%s:%s %s: unable to open channel\n", |
| 994 | open_cfg.transport, open_cfg.edge, open_cfg.name, |
| 995 | __func__); |
| 996 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 997 | return; |
| 998 | } |
| 999 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 1000 | LBSRV_INFO("%s:%s:%s %s: Open complete\n", open_cfg.transport, |
| 1001 | open_cfg.edge, open_cfg.name, __func__); |
| 1002 | } |
| 1003 | |
| 1004 | static void glink_lbsrv_close_worker(struct work_struct *work) |
| 1005 | { |
| 1006 | struct delayed_work *close_work = to_delayed_work(work); |
| 1007 | struct ch_info *tmp_ch_info = |
| 1008 | container_of(close_work, struct ch_info, close_work); |
| 1009 | |
| 1010 | mutex_lock(&tmp_ch_info->ch_info_lock); |
| 1011 | if (!IS_ERR_OR_NULL(tmp_ch_info->handle)) { |
| 1012 | glink_close(tmp_ch_info->handle); |
| 1013 | tmp_ch_info->handle = NULL; |
| 1014 | } |
| 1015 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 1016 | LBSRV_INFO("%s:%s:%s %s: Close complete\n", tmp_ch_info->transport, |
| 1017 | tmp_ch_info->edge, tmp_ch_info->name, __func__); |
| 1018 | } |
| 1019 | |
| 1020 | static void glink_lbsrv_rmt_rx_intent_req_worker(struct work_struct *work) |
| 1021 | { |
| 1022 | |
| 1023 | struct delayed_work *rmt_rx_intent_req_work = to_delayed_work(work); |
| 1024 | struct rmt_rx_intent_req_work_info *tmp_work_info = |
| 1025 | container_of(rmt_rx_intent_req_work, |
| 1026 | struct rmt_rx_intent_req_work_info, work); |
| 1027 | struct ch_info *tmp_ch_info = tmp_work_info->work_ch_info; |
| 1028 | int ret; |
| 1029 | |
| 1030 | mutex_lock(&tmp_ch_info->ch_info_lock); |
| 1031 | if (IS_ERR_OR_NULL(tmp_ch_info->handle)) { |
| 1032 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 1033 | LBSRV_ERR("%s:%s:%s %s: Invalid CH handle\n", |
| 1034 | tmp_ch_info->transport, |
| 1035 | tmp_ch_info->edge, |
| 1036 | tmp_ch_info->name, __func__); |
| 1037 | kfree(tmp_work_info); |
| 1038 | return; |
| 1039 | } |
| 1040 | ret = glink_queue_rx_intent(tmp_ch_info->handle, |
| 1041 | (void *)tmp_ch_info, tmp_work_info->req_intent_size); |
| 1042 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 1043 | LBSRV_INFO("%s:%s:%s %s: QUEUE RX INTENT size[%zu] ret[%d]\n", |
| 1044 | tmp_ch_info->transport, tmp_ch_info->edge, |
| 1045 | tmp_ch_info->name, __func__, tmp_work_info->req_intent_size, |
| 1046 | ret); |
| 1047 | if (ret < 0) { |
| 1048 | LBSRV_ERR("%s:%s:%s %s: Err %d q'ing intent size %zu\n", |
| 1049 | tmp_ch_info->transport, tmp_ch_info->edge, |
| 1050 | tmp_ch_info->name, __func__, ret, |
| 1051 | tmp_work_info->req_intent_size); |
| 1052 | } |
| 1053 | kfree(tmp_work_info); |
| 1054 | } |
| 1055 | |
| 1056 | static void glink_lbsrv_queue_rx_intent_worker(struct work_struct *work) |
| 1057 | { |
| 1058 | struct delayed_work *queue_rx_intent_work = to_delayed_work(work); |
| 1059 | struct queue_rx_intent_work_info *tmp_work_info = |
| 1060 | container_of(queue_rx_intent_work, |
| 1061 | struct queue_rx_intent_work_info, work); |
| 1062 | struct ch_info *tmp_ch_info = tmp_work_info->work_ch_info; |
| 1063 | int ret; |
| 1064 | uint32_t delay_ms; |
| 1065 | |
| 1066 | while (1) { |
| 1067 | mutex_lock(&tmp_ch_info->ch_info_lock); |
| 1068 | if (IS_ERR_OR_NULL(tmp_ch_info->handle)) { |
| 1069 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 1070 | return; |
| 1071 | } |
| 1072 | |
| 1073 | ret = glink_queue_rx_intent(tmp_ch_info->handle, |
| 1074 | (void *)tmp_ch_info, tmp_work_info->intent_size); |
| 1075 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 1076 | if (ret < 0) { |
| 1077 | LBSRV_ERR("%s:%s:%s %s: Err %d q'ing intent size %d\n", |
| 1078 | tmp_ch_info->transport, tmp_ch_info->edge, |
| 1079 | tmp_ch_info->name, __func__, ret, |
| 1080 | tmp_work_info->intent_size); |
| 1081 | kfree(tmp_work_info); |
| 1082 | return; |
| 1083 | } |
| 1084 | LBSRV_INFO("%s:%s:%s %s: Queued rx intent of size %d\n", |
| 1085 | tmp_ch_info->transport, tmp_ch_info->edge, |
| 1086 | tmp_ch_info->name, __func__, |
| 1087 | tmp_work_info->intent_size); |
| 1088 | tmp_work_info->num_intents--; |
| 1089 | if (!tmp_work_info->num_intents) |
| 1090 | break; |
| 1091 | |
| 1092 | delay_ms = calc_delay_ms(tmp_work_info->random_delay, |
| 1093 | tmp_work_info->delay_ms); |
| 1094 | if (delay_ms) { |
| 1095 | queue_delayed_work(glink_lbsrv_wq, &tmp_work_info->work, |
| 1096 | msecs_to_jiffies(delay_ms)); |
| 1097 | return; |
| 1098 | } |
| 1099 | } |
| 1100 | LBSRV_INFO("%s:%s:%s %s: Queued all intents. size:%d\n", |
| 1101 | tmp_ch_info->transport, tmp_ch_info->edge, tmp_ch_info->name, |
| 1102 | __func__, tmp_work_info->intent_size); |
| 1103 | |
| 1104 | if (!tmp_work_info->deferred && !tmp_work_info->random_delay && |
| 1105 | !tmp_work_info->delay_ms) |
| 1106 | glink_lbsrv_send_response(tmp_work_info->req_ch_info->handle, |
| 1107 | tmp_work_info->req_id, QUEUE_RX_INTENT_CONFIG, |
| 1108 | 0); |
| 1109 | kfree(tmp_work_info); |
| 1110 | } |
| 1111 | |
| 1112 | static void glink_lbsrv_rx_done_worker(struct work_struct *work) |
| 1113 | { |
| 1114 | struct delayed_work *rx_done_work = to_delayed_work(work); |
| 1115 | struct rx_done_work_info *tmp_work_info = |
| 1116 | container_of(rx_done_work, struct rx_done_work_info, work); |
| 1117 | struct ch_info *tmp_ch_info = tmp_work_info->rx_done_ch_info; |
| 1118 | |
| 1119 | mutex_lock(&tmp_ch_info->ch_info_lock); |
| 1120 | if (!IS_ERR_OR_NULL(tmp_ch_info->handle)) |
| 1121 | glink_rx_done(tmp_ch_info->handle, tmp_work_info->ptr, false); |
| 1122 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 1123 | kfree(tmp_work_info); |
| 1124 | } |
| 1125 | |
| 1126 | static void glink_lbsrv_tx_worker(struct work_struct *work) |
| 1127 | { |
| 1128 | struct delayed_work *tx_work = to_delayed_work(work); |
| 1129 | struct tx_work_info *tmp_work_info = |
| 1130 | container_of(tx_work, struct tx_work_info, work); |
| 1131 | struct ch_info *tmp_ch_info = tmp_work_info->tx_ch_info; |
| 1132 | int ret; |
| 1133 | uint32_t delay_ms; |
| 1134 | uint32_t flags; |
| 1135 | |
| 1136 | LBSRV_INFO("%s:%s:%s %s: start TX data[%p] size[%zu]\n", |
| 1137 | tmp_ch_info->transport, tmp_ch_info->edge, tmp_ch_info->name, |
| 1138 | __func__, tmp_work_info->data, tmp_work_info->size); |
| 1139 | while (1) { |
| 1140 | mutex_lock(&tmp_ch_info->ch_info_lock); |
| 1141 | if (IS_ERR_OR_NULL(tmp_ch_info->handle)) { |
| 1142 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 1143 | return; |
| 1144 | } |
| 1145 | |
| 1146 | flags = 0; |
| 1147 | if (tmp_work_info->tracer_pkt) { |
| 1148 | flags |= GLINK_TX_TRACER_PKT; |
| 1149 | tracer_pkt_log_event(tmp_work_info->data, |
| 1150 | LOOPBACK_SRV_TX); |
| 1151 | } |
| 1152 | if (tmp_work_info->buf_type == LINEAR) |
| 1153 | ret = glink_tx(tmp_ch_info->handle, |
| 1154 | (tmp_work_info->tx_config.echo_count > 1 ? |
| 1155 | (void *)0xFFFFFFFF : |
| 1156 | (void *)(uintptr_t) |
| 1157 | tmp_work_info->buf_type), |
| 1158 | (void *)tmp_work_info->data, |
| 1159 | tmp_work_info->size, flags); |
| 1160 | else |
| 1161 | ret = glink_txv(tmp_ch_info->handle, |
| 1162 | (tmp_work_info->tx_config.echo_count > 1 ? |
| 1163 | (void *)0xFFFFFFFF : |
| 1164 | (void *)(uintptr_t) |
| 1165 | tmp_work_info->buf_type), |
| 1166 | (void *)tmp_work_info->data, |
| 1167 | tmp_work_info->size, |
| 1168 | tmp_work_info->vbuf_provider, |
| 1169 | tmp_work_info->pbuf_provider, |
| 1170 | flags); |
| 1171 | mutex_unlock(&tmp_ch_info->ch_info_lock); |
| 1172 | if (ret < 0 && ret != -EAGAIN) { |
| 1173 | LBSRV_ERR("%s:%s:%s %s: TX Error %d\n", |
| 1174 | tmp_ch_info->transport, |
| 1175 | tmp_ch_info->edge, |
| 1176 | tmp_ch_info->name, __func__, ret); |
| 1177 | glink_lbsrv_free_data(tmp_work_info->data, |
| 1178 | tmp_work_info->buf_type); |
| 1179 | kfree(tmp_work_info); |
| 1180 | return; |
| 1181 | } |
| 1182 | if (ret != -EAGAIN) |
| 1183 | tmp_work_info->tx_config.echo_count--; |
| 1184 | if (!tmp_work_info->tx_config.echo_count) |
| 1185 | break; |
| 1186 | |
| 1187 | delay_ms = calc_delay_ms(tmp_work_info->tx_config.random_delay, |
| 1188 | tmp_work_info->tx_config.delay_ms); |
| 1189 | if (delay_ms) { |
| 1190 | queue_delayed_work(glink_lbsrv_wq, &tmp_work_info->work, |
| 1191 | msecs_to_jiffies(delay_ms)); |
| 1192 | return; |
| 1193 | } |
| 1194 | } |
| 1195 | kfree(tmp_work_info); |
| 1196 | } |
| 1197 | |
| 1198 | /** |
| 1199 | * glink_lbsrv_link_state_worker() - Function to handle link state updates |
| 1200 | * work: Pointer to the work item in the link_state_work_info. |
| 1201 | * |
| 1202 | * This worker function is scheduled when there is a link state update. Since |
| 1203 | * the loopback server registers for all transports, it receives all link state |
| 1204 | * updates about all transports that get registered in the system. |
| 1205 | */ |
| 1206 | static void glink_lbsrv_link_state_worker(struct work_struct *work) |
| 1207 | { |
| 1208 | struct delayed_work *ls_work = to_delayed_work(work); |
| 1209 | struct link_state_work_info *ls_info = |
| 1210 | container_of(ls_work, struct link_state_work_info, work); |
| 1211 | struct ch_info *tmp_ch_info; |
| 1212 | |
| 1213 | if (ls_info->link_state == GLINK_LINK_STATE_UP) { |
| 1214 | LBSRV_INFO("%s: LINK_STATE_UP %s:%s\n", |
| 1215 | __func__, ls_info->edge, ls_info->transport); |
| 1216 | mutex_lock(&ctl_ch_list_lock); |
| 1217 | list_for_each_entry(tmp_ch_info, &ctl_ch_list, list) { |
| 1218 | if (strcmp(tmp_ch_info->edge, ls_info->edge) || |
| 1219 | strcmp(tmp_ch_info->transport, ls_info->transport)) |
| 1220 | continue; |
| 1221 | queue_delayed_work(glink_lbsrv_wq, |
| 1222 | &tmp_ch_info->open_work, 0); |
| 1223 | } |
| 1224 | mutex_unlock(&ctl_ch_list_lock); |
| 1225 | } else if (ls_info->link_state == GLINK_LINK_STATE_DOWN) { |
| 1226 | LBSRV_INFO("%s: LINK_STATE_DOWN %s:%s\n", |
| 1227 | __func__, ls_info->edge, ls_info->transport); |
| 1228 | |
| 1229 | } |
| 1230 | kfree(ls_info); |
| 1231 | } |
| 1232 | |
| 1233 | /** |
| 1234 | * glink_lbsrv_link_state_cb() - Callback to receive link state updates |
| 1235 | * cb_info: Information containing link & its state. |
| 1236 | * priv: Private data passed during the link state registration. |
| 1237 | * |
| 1238 | * This function is called by the GLINK core to notify the loopback server |
| 1239 | * regarding the link state updates. This function is registered with the |
| 1240 | * GLINK core by the loopback server during glink_register_link_state_cb(). |
| 1241 | */ |
| 1242 | static void glink_lbsrv_link_state_cb(struct glink_link_state_cb_info *cb_info, |
| 1243 | void *priv) |
| 1244 | { |
| 1245 | struct link_state_work_info *ls_info; |
| 1246 | |
| 1247 | if (!cb_info) |
| 1248 | return; |
| 1249 | |
| 1250 | LBSRV_INFO("%s: %s:%s\n", __func__, cb_info->edge, cb_info->transport); |
| 1251 | ls_info = kmalloc(sizeof(*ls_info), GFP_KERNEL); |
| 1252 | if (!ls_info) { |
| 1253 | LBSRV_ERR("%s: Error allocating link state info\n", __func__); |
| 1254 | return; |
| 1255 | } |
| 1256 | |
| 1257 | strlcpy(ls_info->edge, cb_info->edge, GLINK_NAME_SIZE); |
| 1258 | strlcpy(ls_info->transport, cb_info->transport, GLINK_NAME_SIZE); |
| 1259 | ls_info->link_state = cb_info->link_state; |
| 1260 | INIT_DELAYED_WORK(&ls_info->work, glink_lbsrv_link_state_worker); |
| 1261 | queue_delayed_work(glink_lbsrv_wq, &ls_info->work, 0); |
| 1262 | } |
| 1263 | |
| 1264 | static int glink_loopback_server_init(void) |
| 1265 | { |
| 1266 | int i; |
| 1267 | int ret; |
| 1268 | struct ch_info *tmp_ch_info; |
| 1269 | |
| 1270 | glink_lbsrv_log_ctx = ipc_log_context_create(GLINK_LBSRV_NUM_LOG_PAGES, |
| 1271 | "glink_lbsrv", 0); |
| 1272 | if (!glink_lbsrv_log_ctx) |
| 1273 | pr_err("%s: unable to create log context\n", __func__); |
| 1274 | |
| 1275 | glink_lbsrv_wq = create_singlethread_workqueue("glink_lbsrv"); |
| 1276 | if (!glink_lbsrv_wq) { |
| 1277 | LBSRV_ERR("%s: Error creating glink_lbsrv_wq\n", __func__); |
| 1278 | return -EFAULT; |
| 1279 | } |
| 1280 | |
| 1281 | for (i = 0; i < ARRAY_SIZE(ctl_ch_tbl); i++) { |
| 1282 | ret = create_ch_info(ctl_ch_tbl[i].name, ctl_ch_tbl[i].edge, |
| 1283 | ctl_ch_tbl[i].transport, CTL, |
| 1284 | &tmp_ch_info); |
| 1285 | if (ret < 0) { |
| 1286 | LBSRV_ERR("%s: Error creating ctl ch index %d\n", |
| 1287 | __func__, i); |
| 1288 | continue; |
| 1289 | } |
| 1290 | } |
| 1291 | glink_lbsrv_link_state_notif_handle = glink_register_link_state_cb( |
| 1292 | &glink_lbsrv_link_info, NULL); |
| 1293 | return 0; |
| 1294 | } |
| 1295 | |
| 1296 | module_init(glink_loopback_server_init); |
| 1297 | |
| 1298 | MODULE_DESCRIPTION("MSM Generic Link (G-Link) Loopback Server"); |
| 1299 | MODULE_LICENSE("GPL v2"); |