Skylar Chang | df5f234 | 2017-06-05 09:27:48 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2015-2017 The Linux Foundation. All rights reserved. |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [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 | |
| 13 | #include <linux/mutex.h> |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/platform_device.h> |
| 16 | #include <linux/debugfs.h> |
| 17 | #include <linux/ipa.h> |
| 18 | #include <linux/ipa_usb.h> |
| 19 | #include <linux/rndis_ipa.h> |
| 20 | #include <linux/ecm_ipa.h> |
| 21 | #include "../ipa_v3/ipa_i.h" |
| 22 | #include "../ipa_rm_i.h" |
| 23 | |
| 24 | #define IPA_USB_RM_TIMEOUT_MSEC 10000 |
| 25 | #define IPA_USB_DEV_READY_TIMEOUT_MSEC 10000 |
| 26 | |
| 27 | #define IPA_HOLB_TMR_EN 0x1 |
| 28 | |
| 29 | /* GSI channels weights */ |
| 30 | #define IPA_USB_DL_CHAN_LOW_WEIGHT 0x5 |
| 31 | #define IPA_USB_UL_CHAN_LOW_WEIGHT 0x4 |
| 32 | |
| 33 | #define IPA_USB_MAX_MSG_LEN 4096 |
| 34 | |
| 35 | #define IPA_USB_DRV_NAME "ipa_usb" |
| 36 | |
| 37 | #define IPA_USB_DBG(fmt, args...) \ |
| 38 | do { \ |
| 39 | pr_debug(IPA_USB_DRV_NAME " %s:%d " fmt, \ |
| 40 | __func__, __LINE__, ## args); \ |
| 41 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf(), \ |
| 42 | IPA_USB_DRV_NAME " %s:%d " fmt, ## args); \ |
| 43 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf_low(), \ |
| 44 | IPA_USB_DRV_NAME " %s:%d " fmt, ## args); \ |
| 45 | } while (0) |
| 46 | |
| 47 | #define IPA_USB_DBG_LOW(fmt, args...) \ |
| 48 | do { \ |
| 49 | pr_debug(IPA_USB_DRV_NAME " %s:%d " fmt, \ |
| 50 | __func__, __LINE__, ## args); \ |
| 51 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf_low(), \ |
| 52 | IPA_USB_DRV_NAME " %s:%d " fmt, ## args); \ |
| 53 | } while (0) |
| 54 | |
| 55 | #define IPA_USB_ERR(fmt, args...) \ |
| 56 | do { \ |
| 57 | pr_err(IPA_USB_DRV_NAME " %s:%d " fmt, \ |
| 58 | __func__, __LINE__, ## args); \ |
| 59 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf(), \ |
| 60 | IPA_USB_DRV_NAME " %s:%d " fmt, ## args); \ |
| 61 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf_low(), \ |
| 62 | IPA_USB_DRV_NAME " %s:%d " fmt, ## args); \ |
| 63 | } while (0) |
| 64 | |
| 65 | #define IPA_USB_INFO(fmt, args...) \ |
| 66 | do { \ |
| 67 | pr_info(IPA_USB_DRV_NAME " %s:%d " fmt, \ |
| 68 | __func__, __LINE__, ## args); \ |
| 69 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf(), \ |
| 70 | IPA_USB_DRV_NAME " %s:%d " fmt, ## args); \ |
| 71 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf_low(), \ |
| 72 | IPA_USB_DRV_NAME " %s:%d " fmt, ## args); \ |
| 73 | } while (0) |
| 74 | |
| 75 | struct ipa_usb_xdci_connect_params_internal { |
| 76 | enum ipa_usb_max_usb_packet_size max_pkt_size; |
| 77 | u32 ipa_to_usb_clnt_hdl; |
| 78 | u8 ipa_to_usb_xferrscidx; |
| 79 | bool ipa_to_usb_xferrscidx_valid; |
| 80 | u32 usb_to_ipa_clnt_hdl; |
| 81 | u8 usb_to_ipa_xferrscidx; |
| 82 | bool usb_to_ipa_xferrscidx_valid; |
| 83 | enum ipa_usb_teth_prot teth_prot; |
| 84 | struct ipa_usb_teth_prot_params teth_prot_params; |
| 85 | u32 max_supported_bandwidth_mbps; |
| 86 | }; |
| 87 | |
| 88 | enum ipa3_usb_teth_prot_state { |
| 89 | IPA_USB_TETH_PROT_INITIALIZED, |
| 90 | IPA_USB_TETH_PROT_CONNECTED, |
| 91 | IPA_USB_TETH_PROT_INVALID |
| 92 | }; |
| 93 | |
| 94 | struct ipa3_usb_teth_prot_context { |
| 95 | union { |
| 96 | struct ipa_usb_init_params rndis; |
| 97 | struct ecm_ipa_params ecm; |
| 98 | struct teth_bridge_init_params teth_bridge; |
| 99 | } teth_prot_params; |
| 100 | enum ipa3_usb_teth_prot_state state; |
| 101 | void *user_data; |
| 102 | }; |
| 103 | |
| 104 | enum ipa3_usb_cons_state { |
| 105 | IPA_USB_CONS_GRANTED, |
| 106 | IPA_USB_CONS_RELEASED |
| 107 | }; |
| 108 | |
| 109 | struct ipa3_usb_rm_context { |
| 110 | struct ipa_rm_create_params prod_params; |
| 111 | struct ipa_rm_create_params cons_params; |
| 112 | bool prod_valid; |
| 113 | bool cons_valid; |
| 114 | struct completion prod_comp; |
| 115 | enum ipa3_usb_cons_state cons_state; |
| 116 | /* consumer was requested*/ |
| 117 | bool cons_requested; |
| 118 | /* consumer was requested and released before it was granted*/ |
| 119 | bool cons_requested_released; |
| 120 | }; |
| 121 | |
| 122 | enum ipa3_usb_state { |
| 123 | IPA_USB_INVALID, |
| 124 | IPA_USB_INITIALIZED, |
| 125 | IPA_USB_CONNECTED, |
| 126 | IPA_USB_STOPPED, |
| 127 | IPA_USB_SUSPEND_REQUESTED, |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 128 | IPA_USB_SUSPENDED, |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 129 | IPA_USB_SUSPENDED_NO_RWAKEUP, |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 130 | IPA_USB_RESUME_IN_PROGRESS |
| 131 | }; |
| 132 | |
| 133 | enum ipa3_usb_transport_type { |
| 134 | IPA_USB_TRANSPORT_TETH, |
| 135 | IPA_USB_TRANSPORT_DPL, |
| 136 | IPA_USB_TRANSPORT_MAX |
| 137 | }; |
| 138 | |
| 139 | /* Get transport type from tethering protocol */ |
| 140 | #define IPA3_USB_GET_TTYPE(__teth_prot) \ |
| 141 | (((__teth_prot) == IPA_USB_DIAG) ? \ |
| 142 | IPA_USB_TRANSPORT_DPL : IPA_USB_TRANSPORT_TETH) |
| 143 | |
| 144 | /* Does the given transport type is DPL? */ |
| 145 | #define IPA3_USB_IS_TTYPE_DPL(__ttype) \ |
| 146 | ((__ttype) == IPA_USB_TRANSPORT_DPL) |
| 147 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 148 | struct ipa3_usb_teth_prot_conn_params { |
| 149 | u32 usb_to_ipa_clnt_hdl; |
| 150 | u32 ipa_to_usb_clnt_hdl; |
| 151 | struct ipa_usb_teth_prot_params params; |
| 152 | }; |
| 153 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 154 | /** |
| 155 | * Transport type - could be either data tethering or DPL |
| 156 | * Each transport has it's own RM resources and statuses |
| 157 | */ |
| 158 | struct ipa3_usb_transport_type_ctx { |
| 159 | struct ipa3_usb_rm_context rm_ctx; |
| 160 | int (*ipa_usb_notify_cb)(enum ipa_usb_notify_event, void *user_data); |
| 161 | void *user_data; |
| 162 | enum ipa3_usb_state state; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 163 | struct ipa_usb_xdci_chan_params ch_params; |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 164 | struct ipa3_usb_teth_prot_conn_params teth_conn_params; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 165 | }; |
| 166 | |
| 167 | struct ipa3_usb_smmu_reg_map { |
| 168 | int cnt; |
| 169 | phys_addr_t addr; |
| 170 | }; |
| 171 | |
| 172 | struct ipa3_usb_context { |
| 173 | struct ipa3_usb_teth_prot_context |
| 174 | teth_prot_ctx[IPA_USB_MAX_TETH_PROT_SIZE]; |
| 175 | int num_init_prot; /* without dpl */ |
| 176 | struct teth_bridge_init_params teth_bridge_params; |
| 177 | struct completion dev_ready_comp; |
| 178 | u32 qmi_req_id; |
| 179 | spinlock_t state_lock; |
| 180 | bool dl_data_pending; |
| 181 | struct workqueue_struct *wq; |
| 182 | struct mutex general_mutex; |
| 183 | struct ipa3_usb_transport_type_ctx |
| 184 | ttype_ctx[IPA_USB_TRANSPORT_MAX]; |
| 185 | struct dentry *dfile_state_info; |
| 186 | struct dentry *dent; |
| 187 | struct ipa3_usb_smmu_reg_map smmu_reg_map; |
| 188 | }; |
| 189 | |
| 190 | enum ipa3_usb_op { |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 191 | IPA_USB_OP_INIT_TETH_PROT, |
| 192 | IPA_USB_OP_REQUEST_CHANNEL, |
| 193 | IPA_USB_OP_CONNECT, |
| 194 | IPA_USB_OP_DISCONNECT, |
| 195 | IPA_USB_OP_RELEASE_CHANNEL, |
| 196 | IPA_USB_OP_DEINIT_TETH_PROT, |
| 197 | IPA_USB_OP_SUSPEND, |
| 198 | IPA_USB_OP_SUSPEND_NO_RWAKEUP, |
| 199 | IPA_USB_OP_RESUME |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 200 | }; |
| 201 | |
| 202 | struct ipa3_usb_status_dbg_info { |
| 203 | const char *teth_state; |
| 204 | const char *dpl_state; |
| 205 | int num_init_prot; |
| 206 | const char *inited_prots[IPA_USB_MAX_TETH_PROT_SIZE]; |
| 207 | const char *teth_connected_prot; |
| 208 | const char *dpl_connected_prot; |
| 209 | const char *teth_cons_state; |
| 210 | const char *dpl_cons_state; |
| 211 | }; |
| 212 | |
| 213 | static void ipa3_usb_wq_notify_remote_wakeup(struct work_struct *work); |
| 214 | static void ipa3_usb_wq_dpl_notify_remote_wakeup(struct work_struct *work); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 215 | static DECLARE_WORK(ipa3_usb_notify_remote_wakeup_work, |
| 216 | ipa3_usb_wq_notify_remote_wakeup); |
| 217 | static DECLARE_WORK(ipa3_usb_dpl_notify_remote_wakeup_work, |
| 218 | ipa3_usb_wq_dpl_notify_remote_wakeup); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 219 | |
| 220 | struct ipa3_usb_context *ipa3_usb_ctx; |
| 221 | |
| 222 | static char *ipa3_usb_op_to_string(enum ipa3_usb_op op) |
| 223 | { |
| 224 | switch (op) { |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 225 | case IPA_USB_OP_INIT_TETH_PROT: |
| 226 | return "IPA_USB_OP_INIT_TETH_PROT"; |
| 227 | case IPA_USB_OP_REQUEST_CHANNEL: |
| 228 | return "IPA_USB_OP_REQUEST_CHANNEL"; |
| 229 | case IPA_USB_OP_CONNECT: |
| 230 | return "IPA_USB_OP_CONNECT"; |
| 231 | case IPA_USB_OP_DISCONNECT: |
| 232 | return "IPA_USB_OP_DISCONNECT"; |
| 233 | case IPA_USB_OP_RELEASE_CHANNEL: |
| 234 | return "IPA_USB_OP_RELEASE_CHANNEL"; |
| 235 | case IPA_USB_OP_DEINIT_TETH_PROT: |
| 236 | return "IPA_USB_OP_DEINIT_TETH_PROT"; |
| 237 | case IPA_USB_OP_SUSPEND: |
| 238 | return "IPA_USB_OP_SUSPEND"; |
| 239 | case IPA_USB_OP_SUSPEND_NO_RWAKEUP: |
| 240 | return "IPA_USB_OP_SUSPEND_NO_RWAKEUP"; |
| 241 | case IPA_USB_OP_RESUME: |
| 242 | return "IPA_USB_OP_RESUME"; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 243 | } |
| 244 | |
| 245 | return "UNSUPPORTED"; |
| 246 | } |
| 247 | |
| 248 | static char *ipa3_usb_state_to_string(enum ipa3_usb_state state) |
| 249 | { |
| 250 | switch (state) { |
| 251 | case IPA_USB_INVALID: |
| 252 | return "IPA_USB_INVALID"; |
| 253 | case IPA_USB_INITIALIZED: |
| 254 | return "IPA_USB_INITIALIZED"; |
| 255 | case IPA_USB_CONNECTED: |
| 256 | return "IPA_USB_CONNECTED"; |
| 257 | case IPA_USB_STOPPED: |
| 258 | return "IPA_USB_STOPPED"; |
| 259 | case IPA_USB_SUSPEND_REQUESTED: |
| 260 | return "IPA_USB_SUSPEND_REQUESTED"; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 261 | case IPA_USB_SUSPENDED: |
| 262 | return "IPA_USB_SUSPENDED"; |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 263 | case IPA_USB_SUSPENDED_NO_RWAKEUP: |
| 264 | return "IPA_USB_SUSPENDED_NO_RWAKEUP"; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 265 | case IPA_USB_RESUME_IN_PROGRESS: |
| 266 | return "IPA_USB_RESUME_IN_PROGRESS"; |
| 267 | } |
| 268 | |
| 269 | return "UNSUPPORTED"; |
| 270 | } |
| 271 | |
| 272 | static char *ipa3_usb_notify_event_to_string(enum ipa_usb_notify_event event) |
| 273 | { |
| 274 | switch (event) { |
| 275 | case IPA_USB_DEVICE_READY: |
| 276 | return "IPA_USB_DEVICE_READY"; |
| 277 | case IPA_USB_REMOTE_WAKEUP: |
| 278 | return "IPA_USB_REMOTE_WAKEUP"; |
| 279 | case IPA_USB_SUSPEND_COMPLETED: |
| 280 | return "IPA_USB_SUSPEND_COMPLETED"; |
| 281 | } |
| 282 | |
| 283 | return "UNSUPPORTED"; |
| 284 | } |
| 285 | |
| 286 | static bool ipa3_usb_set_state(enum ipa3_usb_state new_state, bool err_permit, |
| 287 | enum ipa3_usb_transport_type ttype) |
| 288 | { |
| 289 | unsigned long flags; |
| 290 | int state_legal = false; |
| 291 | enum ipa3_usb_state state; |
| 292 | struct ipa3_usb_rm_context *rm_ctx; |
| 293 | |
| 294 | spin_lock_irqsave(&ipa3_usb_ctx->state_lock, flags); |
| 295 | state = ipa3_usb_ctx->ttype_ctx[ttype].state; |
| 296 | switch (new_state) { |
| 297 | case IPA_USB_INVALID: |
| 298 | if (state == IPA_USB_INITIALIZED) |
| 299 | state_legal = true; |
| 300 | break; |
| 301 | case IPA_USB_INITIALIZED: |
| 302 | if (state == IPA_USB_STOPPED || state == IPA_USB_INVALID || |
| 303 | ((!IPA3_USB_IS_TTYPE_DPL(ttype)) && |
| 304 | (state == IPA_USB_INITIALIZED))) |
| 305 | state_legal = true; |
| 306 | break; |
| 307 | case IPA_USB_CONNECTED: |
| 308 | if (state == IPA_USB_INITIALIZED || |
| 309 | state == IPA_USB_STOPPED || |
| 310 | state == IPA_USB_RESUME_IN_PROGRESS || |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 311 | state == IPA_USB_SUSPENDED_NO_RWAKEUP || |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 312 | /* |
| 313 | * In case of failure during suspend request |
| 314 | * handling, state is reverted to connected. |
| 315 | */ |
Skylar Chang | df5f234 | 2017-06-05 09:27:48 -0700 | [diff] [blame] | 316 | (err_permit && state == IPA_USB_SUSPEND_REQUESTED)) |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 317 | state_legal = true; |
| 318 | break; |
| 319 | case IPA_USB_STOPPED: |
Skylar Chang | df5f234 | 2017-06-05 09:27:48 -0700 | [diff] [blame] | 320 | if (state == IPA_USB_CONNECTED || |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 321 | state == IPA_USB_SUSPENDED || |
| 322 | state == IPA_USB_SUSPENDED_NO_RWAKEUP) |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 323 | state_legal = true; |
| 324 | break; |
| 325 | case IPA_USB_SUSPEND_REQUESTED: |
| 326 | if (state == IPA_USB_CONNECTED) |
| 327 | state_legal = true; |
| 328 | break; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 329 | case IPA_USB_SUSPENDED: |
| 330 | if (state == IPA_USB_SUSPEND_REQUESTED || |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 331 | /* |
| 332 | * In case of failure during resume, state is reverted |
| 333 | * to original, which could be suspended. Allow it |
| 334 | */ |
| 335 | (err_permit && state == IPA_USB_RESUME_IN_PROGRESS)) |
| 336 | state_legal = true; |
| 337 | break; |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 338 | case IPA_USB_SUSPENDED_NO_RWAKEUP: |
| 339 | if (state == IPA_USB_CONNECTED) |
| 340 | state_legal = true; |
| 341 | break; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 342 | case IPA_USB_RESUME_IN_PROGRESS: |
Skylar Chang | df5f234 | 2017-06-05 09:27:48 -0700 | [diff] [blame] | 343 | if (state == IPA_USB_SUSPENDED) |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 344 | state_legal = true; |
| 345 | break; |
| 346 | default: |
| 347 | state_legal = false; |
| 348 | break; |
| 349 | |
| 350 | } |
| 351 | if (state_legal) { |
| 352 | if (state != new_state) { |
| 353 | IPA_USB_DBG("ipa_usb %s state changed %s -> %s\n", |
| 354 | IPA3_USB_IS_TTYPE_DPL(ttype) ? "DPL" : "", |
| 355 | ipa3_usb_state_to_string(state), |
| 356 | ipa3_usb_state_to_string(new_state)); |
| 357 | ipa3_usb_ctx->ttype_ctx[ttype].state = new_state; |
| 358 | } |
| 359 | } else { |
| 360 | IPA_USB_ERR("invalid state change %s -> %s\n", |
| 361 | ipa3_usb_state_to_string(state), |
| 362 | ipa3_usb_state_to_string(new_state)); |
| 363 | } |
| 364 | |
| 365 | if (state_legal && (new_state == IPA_USB_CONNECTED)) { |
| 366 | rm_ctx = &ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx; |
| 367 | if ((rm_ctx->cons_state == IPA_USB_CONS_GRANTED) || |
| 368 | rm_ctx->cons_requested_released) { |
| 369 | rm_ctx->cons_requested = false; |
| 370 | rm_ctx->cons_requested_released = |
| 371 | false; |
| 372 | } |
| 373 | /* Notify RM that consumer is granted */ |
| 374 | if (rm_ctx->cons_requested) { |
| 375 | ipa_rm_notify_completion( |
| 376 | IPA_RM_RESOURCE_GRANTED, |
| 377 | rm_ctx->cons_params.name); |
| 378 | rm_ctx->cons_state = IPA_USB_CONS_GRANTED; |
| 379 | rm_ctx->cons_requested = false; |
| 380 | } |
| 381 | } |
| 382 | |
| 383 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, flags); |
| 384 | return state_legal; |
| 385 | } |
| 386 | |
| 387 | static bool ipa3_usb_check_legal_op(enum ipa3_usb_op op, |
| 388 | enum ipa3_usb_transport_type ttype) |
| 389 | { |
| 390 | unsigned long flags; |
| 391 | bool is_legal = false; |
| 392 | enum ipa3_usb_state state; |
| 393 | bool is_dpl; |
| 394 | |
| 395 | if (ipa3_usb_ctx == NULL) { |
| 396 | IPA_USB_ERR("ipa_usb_ctx is not initialized!\n"); |
| 397 | return false; |
| 398 | } |
| 399 | |
| 400 | is_dpl = IPA3_USB_IS_TTYPE_DPL(ttype); |
| 401 | |
| 402 | spin_lock_irqsave(&ipa3_usb_ctx->state_lock, flags); |
| 403 | state = ipa3_usb_ctx->ttype_ctx[ttype].state; |
| 404 | switch (op) { |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 405 | case IPA_USB_OP_INIT_TETH_PROT: |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 406 | if (state == IPA_USB_INVALID || |
| 407 | (!is_dpl && state == IPA_USB_INITIALIZED)) |
| 408 | is_legal = true; |
| 409 | break; |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 410 | case IPA_USB_OP_REQUEST_CHANNEL: |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 411 | if (state == IPA_USB_INITIALIZED) |
| 412 | is_legal = true; |
| 413 | break; |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 414 | case IPA_USB_OP_CONNECT: |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 415 | if (state == IPA_USB_INITIALIZED || state == IPA_USB_STOPPED) |
| 416 | is_legal = true; |
| 417 | break; |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 418 | case IPA_USB_OP_DISCONNECT: |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 419 | if (state == IPA_USB_CONNECTED || |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 420 | state == IPA_USB_SUSPENDED || |
| 421 | state == IPA_USB_SUSPENDED_NO_RWAKEUP) |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 422 | is_legal = true; |
| 423 | break; |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 424 | case IPA_USB_OP_RELEASE_CHANNEL: |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 425 | /* when releasing 1st channel state will be changed already */ |
| 426 | if (state == IPA_USB_STOPPED || |
| 427 | (!is_dpl && state == IPA_USB_INITIALIZED)) |
| 428 | is_legal = true; |
| 429 | break; |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 430 | case IPA_USB_OP_DEINIT_TETH_PROT: |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 431 | /* |
| 432 | * For data tethering we should allow deinit an inited protocol |
| 433 | * always. E.g. rmnet is inited and rndis is connected. |
| 434 | * USB can deinit rmnet first and then disconnect rndis |
| 435 | * on cable disconnect. |
| 436 | */ |
| 437 | if (!is_dpl || state == IPA_USB_INITIALIZED) |
| 438 | is_legal = true; |
| 439 | break; |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 440 | case IPA_USB_OP_SUSPEND: |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 441 | if (state == IPA_USB_CONNECTED) |
| 442 | is_legal = true; |
| 443 | break; |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 444 | case IPA_USB_OP_SUSPEND_NO_RWAKEUP: |
| 445 | if (state == IPA_USB_CONNECTED) |
| 446 | is_legal = true; |
| 447 | break; |
| 448 | case IPA_USB_OP_RESUME: |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 449 | if (state == IPA_USB_SUSPENDED || |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 450 | state == IPA_USB_SUSPENDED_NO_RWAKEUP) |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 451 | is_legal = true; |
| 452 | break; |
| 453 | default: |
| 454 | is_legal = false; |
| 455 | break; |
| 456 | } |
| 457 | |
| 458 | if (!is_legal) { |
| 459 | IPA_USB_ERR("Illegal %s operation: state=%s operation=%s\n", |
| 460 | is_dpl ? "DPL" : "", |
| 461 | ipa3_usb_state_to_string(state), |
| 462 | ipa3_usb_op_to_string(op)); |
| 463 | } |
| 464 | |
| 465 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, flags); |
| 466 | return is_legal; |
| 467 | } |
| 468 | |
| 469 | static void ipa3_usb_notify_do(enum ipa3_usb_transport_type ttype, |
| 470 | enum ipa_usb_notify_event event) |
| 471 | { |
| 472 | int (*cb)(enum ipa_usb_notify_event, void *user_data); |
| 473 | void *user_data; |
| 474 | int res; |
| 475 | |
| 476 | IPA_USB_DBG("Trying to notify USB with %s\n", |
| 477 | ipa3_usb_notify_event_to_string(event)); |
| 478 | |
| 479 | cb = ipa3_usb_ctx->ttype_ctx[ttype].ipa_usb_notify_cb; |
| 480 | user_data = ipa3_usb_ctx->ttype_ctx[ttype].user_data; |
| 481 | |
| 482 | if (cb) { |
| 483 | res = cb(event, user_data); |
| 484 | IPA_USB_DBG("Notified USB with %s. is_dpl=%d result=%d\n", |
| 485 | ipa3_usb_notify_event_to_string(event), |
| 486 | IPA3_USB_IS_TTYPE_DPL(ttype), res); |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | /* |
| 491 | * This call-back is called from ECM or RNDIS drivers. |
| 492 | * Both drivers are data tethering drivers and not DPL |
| 493 | */ |
| 494 | void ipa3_usb_device_ready_notify_cb(void) |
| 495 | { |
| 496 | IPA_USB_DBG_LOW("entry\n"); |
| 497 | ipa3_usb_notify_do(IPA_USB_TRANSPORT_TETH, |
| 498 | IPA_USB_DEVICE_READY); |
| 499 | IPA_USB_DBG_LOW("exit\n"); |
| 500 | } |
| 501 | |
| 502 | static void ipa3_usb_prod_notify_cb_do(enum ipa_rm_event event, |
| 503 | enum ipa3_usb_transport_type ttype) |
| 504 | { |
| 505 | struct ipa3_usb_rm_context *rm_ctx; |
| 506 | |
| 507 | IPA_USB_DBG_LOW("entry\n"); |
| 508 | |
| 509 | rm_ctx = &ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx; |
| 510 | |
| 511 | switch (event) { |
| 512 | case IPA_RM_RESOURCE_GRANTED: |
| 513 | IPA_USB_DBG(":%s granted\n", |
| 514 | ipa_rm_resource_str(rm_ctx->prod_params.name)); |
| 515 | complete_all(&rm_ctx->prod_comp); |
| 516 | break; |
| 517 | case IPA_RM_RESOURCE_RELEASED: |
| 518 | IPA_USB_DBG(":%s released\n", |
| 519 | ipa_rm_resource_str(rm_ctx->prod_params.name)); |
| 520 | complete_all(&rm_ctx->prod_comp); |
| 521 | break; |
| 522 | } |
| 523 | IPA_USB_DBG_LOW("exit\n"); |
| 524 | } |
| 525 | |
| 526 | static void ipa3_usb_prod_notify_cb(void *user_data, enum ipa_rm_event event, |
| 527 | unsigned long data) |
| 528 | { |
| 529 | ipa3_usb_prod_notify_cb_do(event, IPA_USB_TRANSPORT_TETH); |
| 530 | } |
| 531 | |
| 532 | static void ipa3_usb_dpl_dummy_prod_notify_cb(void *user_data, |
| 533 | enum ipa_rm_event event, unsigned long data) |
| 534 | { |
| 535 | ipa3_usb_prod_notify_cb_do(event, IPA_USB_TRANSPORT_TETH); |
| 536 | } |
| 537 | |
| 538 | static void ipa3_usb_wq_notify_remote_wakeup(struct work_struct *work) |
| 539 | { |
| 540 | ipa3_usb_notify_do(IPA_USB_TRANSPORT_TETH, IPA_USB_REMOTE_WAKEUP); |
| 541 | } |
| 542 | |
| 543 | static void ipa3_usb_wq_dpl_notify_remote_wakeup(struct work_struct *work) |
| 544 | { |
| 545 | ipa3_usb_notify_do(IPA_USB_TRANSPORT_DPL, IPA_USB_REMOTE_WAKEUP); |
| 546 | } |
| 547 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 548 | static int ipa3_usb_cons_request_resource_cb_do( |
| 549 | enum ipa3_usb_transport_type ttype, |
| 550 | struct work_struct *remote_wakeup_work) |
| 551 | { |
| 552 | struct ipa3_usb_rm_context *rm_ctx; |
| 553 | unsigned long flags; |
| 554 | int result; |
| 555 | |
| 556 | IPA_USB_DBG_LOW("entry\n"); |
| 557 | rm_ctx = &ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx; |
| 558 | spin_lock_irqsave(&ipa3_usb_ctx->state_lock, flags); |
| 559 | IPA_USB_DBG("state is %s\n", |
| 560 | ipa3_usb_state_to_string( |
| 561 | ipa3_usb_ctx->ttype_ctx[ttype].state)); |
| 562 | switch (ipa3_usb_ctx->ttype_ctx[ttype].state) { |
| 563 | case IPA_USB_CONNECTED: |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 564 | case IPA_USB_SUSPENDED_NO_RWAKEUP: |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 565 | rm_ctx->cons_state = IPA_USB_CONS_GRANTED; |
| 566 | result = 0; |
| 567 | break; |
| 568 | case IPA_USB_SUSPEND_REQUESTED: |
| 569 | rm_ctx->cons_requested = true; |
| 570 | if (rm_ctx->cons_state == IPA_USB_CONS_GRANTED) |
| 571 | result = 0; |
| 572 | else |
| 573 | result = -EINPROGRESS; |
| 574 | break; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 575 | case IPA_USB_SUSPENDED: |
| 576 | if (!rm_ctx->cons_requested) { |
| 577 | rm_ctx->cons_requested = true; |
| 578 | queue_work(ipa3_usb_ctx->wq, remote_wakeup_work); |
| 579 | } |
| 580 | result = -EINPROGRESS; |
| 581 | break; |
| 582 | default: |
| 583 | rm_ctx->cons_requested = true; |
| 584 | result = -EINPROGRESS; |
| 585 | break; |
| 586 | } |
| 587 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, flags); |
| 588 | IPA_USB_DBG_LOW("exit with %d\n", result); |
| 589 | return result; |
| 590 | } |
| 591 | |
| 592 | static int ipa3_usb_cons_request_resource_cb(void) |
| 593 | { |
| 594 | return ipa3_usb_cons_request_resource_cb_do(IPA_USB_TRANSPORT_TETH, |
| 595 | &ipa3_usb_notify_remote_wakeup_work); |
| 596 | } |
| 597 | |
| 598 | static int ipa3_usb_dpl_cons_request_resource_cb(void) |
| 599 | { |
| 600 | return ipa3_usb_cons_request_resource_cb_do(IPA_USB_TRANSPORT_DPL, |
| 601 | &ipa3_usb_dpl_notify_remote_wakeup_work); |
| 602 | } |
| 603 | |
| 604 | static int ipa3_usb_cons_release_resource_cb_do( |
| 605 | enum ipa3_usb_transport_type ttype) |
| 606 | { |
| 607 | unsigned long flags; |
| 608 | struct ipa3_usb_rm_context *rm_ctx; |
| 609 | |
| 610 | IPA_USB_DBG_LOW("entry\n"); |
| 611 | rm_ctx = &ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx; |
| 612 | spin_lock_irqsave(&ipa3_usb_ctx->state_lock, flags); |
| 613 | IPA_USB_DBG("state is %s\n", |
| 614 | ipa3_usb_state_to_string( |
| 615 | ipa3_usb_ctx->ttype_ctx[ttype].state)); |
| 616 | switch (ipa3_usb_ctx->ttype_ctx[ttype].state) { |
Skylar Chang | df5f234 | 2017-06-05 09:27:48 -0700 | [diff] [blame] | 617 | case IPA_USB_SUSPENDED: |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 618 | /* Proceed with the suspend if no DL/DPL data */ |
| 619 | if (rm_ctx->cons_requested) |
| 620 | rm_ctx->cons_requested_released = true; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 621 | break; |
| 622 | case IPA_USB_SUSPEND_REQUESTED: |
| 623 | if (rm_ctx->cons_requested) |
| 624 | rm_ctx->cons_requested_released = true; |
| 625 | break; |
| 626 | case IPA_USB_STOPPED: |
| 627 | case IPA_USB_RESUME_IN_PROGRESS: |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 628 | case IPA_USB_SUSPENDED_NO_RWAKEUP: |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 629 | if (rm_ctx->cons_requested) |
| 630 | rm_ctx->cons_requested = false; |
| 631 | break; |
| 632 | case IPA_USB_CONNECTED: |
| 633 | case IPA_USB_INITIALIZED: |
| 634 | break; |
| 635 | default: |
| 636 | IPA_USB_ERR("received cons_release_cb in bad state: %s!\n", |
| 637 | ipa3_usb_state_to_string( |
| 638 | ipa3_usb_ctx->ttype_ctx[ttype].state)); |
| 639 | WARN_ON(1); |
| 640 | break; |
| 641 | } |
| 642 | |
| 643 | rm_ctx->cons_state = IPA_USB_CONS_RELEASED; |
| 644 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, flags); |
| 645 | IPA_USB_DBG_LOW("exit\n"); |
| 646 | return 0; |
| 647 | } |
| 648 | |
| 649 | static int ipa3_usb_cons_release_resource_cb(void) |
| 650 | { |
| 651 | return ipa3_usb_cons_release_resource_cb_do(IPA_USB_TRANSPORT_TETH); |
| 652 | } |
| 653 | |
| 654 | static int ipa3_usb_dpl_cons_release_resource_cb(void) |
| 655 | { |
| 656 | return ipa3_usb_cons_release_resource_cb_do(IPA_USB_TRANSPORT_DPL); |
| 657 | } |
| 658 | |
| 659 | static char *ipa3_usb_teth_prot_to_string(enum ipa_usb_teth_prot teth_prot) |
| 660 | { |
| 661 | switch (teth_prot) { |
| 662 | case IPA_USB_RNDIS: |
| 663 | return "rndis_ipa"; |
| 664 | case IPA_USB_ECM: |
| 665 | return "ecm_ipa"; |
| 666 | case IPA_USB_RMNET: |
| 667 | case IPA_USB_MBIM: |
| 668 | return "teth_bridge"; |
| 669 | case IPA_USB_DIAG: |
| 670 | return "dpl"; |
| 671 | default: |
| 672 | break; |
| 673 | } |
| 674 | |
| 675 | return "unsupported"; |
| 676 | } |
| 677 | |
| 678 | static char *ipa3_usb_teth_bridge_prot_to_string( |
| 679 | enum ipa_usb_teth_prot teth_prot) |
| 680 | { |
| 681 | switch (teth_prot) { |
| 682 | case IPA_USB_RMNET: |
| 683 | return "rmnet"; |
| 684 | case IPA_USB_MBIM: |
| 685 | return "mbim"; |
| 686 | default: |
| 687 | break; |
| 688 | } |
| 689 | |
| 690 | return "unsupported"; |
| 691 | } |
| 692 | |
| 693 | static int ipa3_usb_init_teth_bridge(void) |
| 694 | { |
| 695 | int result; |
| 696 | |
| 697 | result = teth_bridge_init(&ipa3_usb_ctx->teth_bridge_params); |
| 698 | if (result) { |
| 699 | IPA_USB_ERR("Failed to initialize teth_bridge.\n"); |
| 700 | return result; |
| 701 | } |
| 702 | |
| 703 | return 0; |
| 704 | } |
| 705 | |
| 706 | static int ipa3_usb_create_rm_resources(enum ipa3_usb_transport_type ttype) |
| 707 | { |
| 708 | struct ipa3_usb_rm_context *rm_ctx; |
| 709 | int result = -EFAULT; |
| 710 | bool created = false; |
| 711 | |
| 712 | rm_ctx = &ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx; |
| 713 | |
| 714 | /* create PROD */ |
| 715 | if (!rm_ctx->prod_valid) { |
| 716 | rm_ctx->prod_params.name = IPA3_USB_IS_TTYPE_DPL(ttype) ? |
| 717 | IPA_RM_RESOURCE_USB_DPL_DUMMY_PROD : |
| 718 | IPA_RM_RESOURCE_USB_PROD; |
Skylar Chang | 448d8b8 | 2017-08-08 17:30:32 -0700 | [diff] [blame] | 719 | rm_ctx->prod_params.floor_voltage = IPA_VOLTAGE_SVS2; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 720 | rm_ctx->prod_params.reg_params.user_data = NULL; |
| 721 | rm_ctx->prod_params.reg_params.notify_cb = |
| 722 | IPA3_USB_IS_TTYPE_DPL(ttype) ? |
| 723 | ipa3_usb_dpl_dummy_prod_notify_cb : |
| 724 | ipa3_usb_prod_notify_cb; |
| 725 | rm_ctx->prod_params.request_resource = NULL; |
| 726 | rm_ctx->prod_params.release_resource = NULL; |
| 727 | result = ipa_rm_create_resource(&rm_ctx->prod_params); |
| 728 | if (result) { |
| 729 | IPA_USB_ERR("Failed to create %s RM resource\n", |
| 730 | ipa_rm_resource_str(rm_ctx->prod_params.name)); |
| 731 | return result; |
| 732 | } |
| 733 | rm_ctx->prod_valid = true; |
| 734 | created = true; |
| 735 | IPA_USB_DBG("Created %s RM resource\n", |
| 736 | ipa_rm_resource_str(rm_ctx->prod_params.name)); |
| 737 | } |
| 738 | |
| 739 | /* Create CONS */ |
| 740 | if (!rm_ctx->cons_valid) { |
| 741 | rm_ctx->cons_params.name = IPA3_USB_IS_TTYPE_DPL(ttype) ? |
| 742 | IPA_RM_RESOURCE_USB_DPL_CONS : |
| 743 | IPA_RM_RESOURCE_USB_CONS; |
Skylar Chang | 448d8b8 | 2017-08-08 17:30:32 -0700 | [diff] [blame] | 744 | rm_ctx->cons_params.floor_voltage = IPA_VOLTAGE_SVS2; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 745 | rm_ctx->cons_params.reg_params.user_data = NULL; |
| 746 | rm_ctx->cons_params.reg_params.notify_cb = NULL; |
| 747 | rm_ctx->cons_params.request_resource = |
| 748 | IPA3_USB_IS_TTYPE_DPL(ttype) ? |
| 749 | ipa3_usb_dpl_cons_request_resource_cb : |
| 750 | ipa3_usb_cons_request_resource_cb; |
| 751 | rm_ctx->cons_params.release_resource = |
| 752 | IPA3_USB_IS_TTYPE_DPL(ttype) ? |
| 753 | ipa3_usb_dpl_cons_release_resource_cb : |
| 754 | ipa3_usb_cons_release_resource_cb; |
| 755 | result = ipa_rm_create_resource(&rm_ctx->cons_params); |
| 756 | if (result) { |
| 757 | IPA_USB_ERR("Failed to create %s RM resource\n", |
| 758 | ipa_rm_resource_str(rm_ctx->cons_params.name)); |
| 759 | goto create_cons_rsc_fail; |
| 760 | } |
| 761 | rm_ctx->cons_valid = true; |
| 762 | IPA_USB_DBG("Created %s RM resource\n", |
| 763 | ipa_rm_resource_str(rm_ctx->cons_params.name)); |
| 764 | } |
| 765 | |
| 766 | return 0; |
| 767 | |
| 768 | create_cons_rsc_fail: |
| 769 | if (created) { |
| 770 | rm_ctx->prod_valid = false; |
| 771 | ipa_rm_delete_resource(rm_ctx->prod_params.name); |
| 772 | } |
| 773 | return result; |
| 774 | } |
| 775 | |
| 776 | int ipa_usb_init_teth_prot(enum ipa_usb_teth_prot teth_prot, |
| 777 | struct ipa_usb_teth_params *teth_params, |
| 778 | int (*ipa_usb_notify_cb)(enum ipa_usb_notify_event, |
| 779 | void *), |
| 780 | void *user_data) |
| 781 | { |
| 782 | int result = -EFAULT; |
| 783 | enum ipa3_usb_transport_type ttype; |
| 784 | |
| 785 | mutex_lock(&ipa3_usb_ctx->general_mutex); |
| 786 | IPA_USB_DBG_LOW("entry\n"); |
| 787 | if (teth_prot > IPA_USB_MAX_TETH_PROT_SIZE || |
| 788 | ((teth_prot == IPA_USB_RNDIS || teth_prot == IPA_USB_ECM) && |
| 789 | teth_params == NULL) || ipa_usb_notify_cb == NULL || |
| 790 | user_data == NULL) { |
| 791 | IPA_USB_ERR("bad parameters.\n"); |
| 792 | result = -EINVAL; |
| 793 | goto bad_params; |
| 794 | } |
| 795 | |
| 796 | ttype = IPA3_USB_GET_TTYPE(teth_prot); |
| 797 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 798 | if (!ipa3_usb_check_legal_op(IPA_USB_OP_INIT_TETH_PROT, ttype)) { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 799 | IPA_USB_ERR("Illegal operation.\n"); |
| 800 | result = -EPERM; |
| 801 | goto bad_params; |
| 802 | } |
| 803 | |
| 804 | /* Create IPA RM USB resources */ |
| 805 | result = ipa3_usb_create_rm_resources(ttype); |
| 806 | if (result) { |
| 807 | IPA_USB_ERR("Failed creating IPA RM USB resources\n"); |
| 808 | goto bad_params; |
| 809 | } |
| 810 | |
| 811 | if (!ipa3_usb_ctx->ttype_ctx[ttype].ipa_usb_notify_cb) { |
| 812 | ipa3_usb_ctx->ttype_ctx[ttype].ipa_usb_notify_cb = |
| 813 | ipa_usb_notify_cb; |
| 814 | } else if (!IPA3_USB_IS_TTYPE_DPL(ttype)) { |
| 815 | if (ipa3_usb_ctx->ttype_ctx[ttype].ipa_usb_notify_cb != |
| 816 | ipa_usb_notify_cb) { |
| 817 | IPA_USB_ERR("Got different notify_cb\n"); |
| 818 | result = -EINVAL; |
| 819 | goto bad_params; |
| 820 | } |
| 821 | } else { |
| 822 | IPA_USB_ERR("Already has dpl_notify_cb\n"); |
| 823 | result = -EINVAL; |
| 824 | goto bad_params; |
| 825 | } |
| 826 | |
| 827 | /* Initialize tethering protocol */ |
| 828 | switch (teth_prot) { |
| 829 | case IPA_USB_RNDIS: |
| 830 | case IPA_USB_ECM: |
| 831 | if (ipa3_usb_ctx->teth_prot_ctx[teth_prot].state != |
| 832 | IPA_USB_TETH_PROT_INVALID) { |
| 833 | IPA_USB_DBG("%s already initialized\n", |
| 834 | ipa3_usb_teth_prot_to_string(teth_prot)); |
| 835 | result = -EPERM; |
| 836 | goto bad_params; |
| 837 | } |
| 838 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].user_data = user_data; |
| 839 | if (teth_prot == IPA_USB_RNDIS) { |
| 840 | ipa3_usb_ctx->teth_prot_ctx[teth_prot]. |
| 841 | teth_prot_params.rndis.device_ready_notify = |
| 842 | ipa3_usb_device_ready_notify_cb; |
| 843 | memcpy(ipa3_usb_ctx->teth_prot_ctx[teth_prot]. |
| 844 | teth_prot_params.rndis.host_ethaddr, |
| 845 | teth_params->host_ethaddr, |
| 846 | sizeof(teth_params->host_ethaddr)); |
| 847 | memcpy(ipa3_usb_ctx->teth_prot_ctx[teth_prot]. |
| 848 | teth_prot_params.rndis.device_ethaddr, |
| 849 | teth_params->device_ethaddr, |
| 850 | sizeof(teth_params->device_ethaddr)); |
| 851 | |
| 852 | result = rndis_ipa_init(&ipa3_usb_ctx-> |
| 853 | teth_prot_ctx[teth_prot]. |
| 854 | teth_prot_params.rndis); |
| 855 | if (result) { |
| 856 | IPA_USB_ERR("Failed to initialize %s\n", |
| 857 | ipa3_usb_teth_prot_to_string( |
| 858 | teth_prot)); |
| 859 | goto teth_prot_init_fail; |
| 860 | } |
| 861 | } else { |
| 862 | ipa3_usb_ctx->teth_prot_ctx[teth_prot]. |
| 863 | teth_prot_params.ecm.device_ready_notify = |
| 864 | ipa3_usb_device_ready_notify_cb; |
| 865 | memcpy(ipa3_usb_ctx->teth_prot_ctx[teth_prot]. |
| 866 | teth_prot_params.ecm.host_ethaddr, |
| 867 | teth_params->host_ethaddr, |
| 868 | sizeof(teth_params->host_ethaddr)); |
| 869 | memcpy(ipa3_usb_ctx->teth_prot_ctx[teth_prot]. |
| 870 | teth_prot_params.ecm.device_ethaddr, |
| 871 | teth_params->device_ethaddr, |
| 872 | sizeof(teth_params->device_ethaddr)); |
| 873 | |
| 874 | result = ecm_ipa_init(&ipa3_usb_ctx-> |
| 875 | teth_prot_ctx[teth_prot].teth_prot_params.ecm); |
| 876 | if (result) { |
| 877 | IPA_USB_ERR("Failed to initialize %s\n", |
| 878 | ipa3_usb_teth_prot_to_string( |
| 879 | teth_prot)); |
| 880 | goto teth_prot_init_fail; |
| 881 | } |
| 882 | } |
| 883 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].state = |
| 884 | IPA_USB_TETH_PROT_INITIALIZED; |
| 885 | ipa3_usb_ctx->num_init_prot++; |
| 886 | IPA_USB_DBG("initialized %s\n", |
| 887 | ipa3_usb_teth_prot_to_string(teth_prot)); |
| 888 | break; |
| 889 | case IPA_USB_RMNET: |
| 890 | case IPA_USB_MBIM: |
| 891 | if (ipa3_usb_ctx->teth_prot_ctx[teth_prot].state != |
| 892 | IPA_USB_TETH_PROT_INVALID) { |
| 893 | IPA_USB_DBG("%s already initialized\n", |
| 894 | ipa3_usb_teth_prot_to_string(teth_prot)); |
| 895 | result = -EPERM; |
| 896 | goto bad_params; |
| 897 | } |
| 898 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].user_data = user_data; |
| 899 | result = ipa3_usb_init_teth_bridge(); |
| 900 | if (result) |
| 901 | goto teth_prot_init_fail; |
| 902 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].state = |
| 903 | IPA_USB_TETH_PROT_INITIALIZED; |
| 904 | ipa3_usb_ctx->num_init_prot++; |
| 905 | IPA_USB_DBG("initialized %s %s\n", |
| 906 | ipa3_usb_teth_prot_to_string(teth_prot), |
| 907 | ipa3_usb_teth_bridge_prot_to_string(teth_prot)); |
| 908 | break; |
| 909 | case IPA_USB_DIAG: |
| 910 | if (ipa3_usb_ctx->teth_prot_ctx[teth_prot].state != |
| 911 | IPA_USB_TETH_PROT_INVALID) { |
| 912 | IPA_USB_DBG("DPL already initialized\n"); |
| 913 | result = -EPERM; |
| 914 | goto bad_params; |
| 915 | } |
| 916 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].user_data = user_data; |
| 917 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].state = |
| 918 | IPA_USB_TETH_PROT_INITIALIZED; |
| 919 | IPA_USB_DBG("initialized DPL\n"); |
| 920 | break; |
| 921 | default: |
| 922 | IPA_USB_ERR("unexpected tethering protocol\n"); |
| 923 | result = -EINVAL; |
| 924 | goto bad_params; |
| 925 | } |
| 926 | |
| 927 | if (!ipa3_usb_set_state(IPA_USB_INITIALIZED, false, ttype)) |
| 928 | IPA_USB_ERR("failed to change state to initialized\n"); |
| 929 | |
| 930 | IPA_USB_DBG_LOW("exit\n"); |
| 931 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 932 | return 0; |
| 933 | |
| 934 | teth_prot_init_fail: |
| 935 | if ((IPA3_USB_IS_TTYPE_DPL(ttype)) |
| 936 | || (ipa3_usb_ctx->num_init_prot == 0)) { |
| 937 | ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx.prod_valid = false; |
| 938 | ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx.cons_valid = false; |
| 939 | ipa_rm_delete_resource( |
| 940 | ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx.prod_params.name); |
| 941 | ipa_rm_delete_resource( |
| 942 | ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx.cons_params.name); |
| 943 | } |
| 944 | bad_params: |
| 945 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 946 | return result; |
| 947 | } |
| 948 | EXPORT_SYMBOL(ipa_usb_init_teth_prot); |
| 949 | |
| 950 | void ipa3_usb_gsi_evt_err_cb(struct gsi_evt_err_notify *notify) |
| 951 | { |
| 952 | IPA_USB_DBG_LOW("entry\n"); |
| 953 | if (!notify) |
| 954 | return; |
| 955 | IPA_USB_ERR("Received event error %d, description: %d\n", |
| 956 | notify->evt_id, notify->err_desc); |
| 957 | IPA_USB_DBG_LOW("exit\n"); |
| 958 | } |
| 959 | |
| 960 | void ipa3_usb_gsi_chan_err_cb(struct gsi_chan_err_notify *notify) |
| 961 | { |
| 962 | IPA_USB_DBG_LOW("entry\n"); |
| 963 | if (!notify) |
| 964 | return; |
| 965 | IPA_USB_ERR("Received channel error %d, description: %d\n", |
| 966 | notify->evt_id, notify->err_desc); |
| 967 | IPA_USB_DBG_LOW("exit\n"); |
| 968 | } |
| 969 | |
| 970 | static bool ipa3_usb_check_chan_params(struct ipa_usb_xdci_chan_params *params) |
| 971 | { |
| 972 | IPA_USB_DBG_LOW("gevntcount_low_addr = %x\n", |
| 973 | params->gevntcount_low_addr); |
| 974 | IPA_USB_DBG_LOW("gevntcount_hi_addr = %x\n", |
| 975 | params->gevntcount_hi_addr); |
| 976 | IPA_USB_DBG_LOW("dir = %d\n", params->dir); |
| 977 | IPA_USB_DBG_LOW("xfer_ring_len = %d\n", params->xfer_ring_len); |
| 978 | IPA_USB_DBG_LOW("xfer_ring_base_addr = %llx\n", |
| 979 | params->xfer_ring_base_addr); |
| 980 | IPA_USB_DBG_LOW("last_trb_addr_iova = %x\n", |
| 981 | params->xfer_scratch.last_trb_addr_iova); |
| 982 | IPA_USB_DBG_LOW("const_buffer_size = %d\n", |
| 983 | params->xfer_scratch.const_buffer_size); |
| 984 | IPA_USB_DBG_LOW("depcmd_low_addr = %x\n", |
| 985 | params->xfer_scratch.depcmd_low_addr); |
| 986 | IPA_USB_DBG_LOW("depcmd_hi_addr = %x\n", |
| 987 | params->xfer_scratch.depcmd_hi_addr); |
| 988 | |
| 989 | if (params->client >= IPA_CLIENT_MAX || |
| 990 | params->teth_prot > IPA_USB_MAX_TETH_PROT_SIZE || |
| 991 | params->xfer_ring_len % GSI_CHAN_RE_SIZE_16B || |
| 992 | params->xfer_scratch.const_buffer_size < 1 || |
| 993 | params->xfer_scratch.const_buffer_size > 31) { |
| 994 | IPA_USB_ERR("Invalid params\n"); |
| 995 | return false; |
| 996 | } |
| 997 | switch (params->teth_prot) { |
| 998 | case IPA_USB_DIAG: |
| 999 | if (!IPA_CLIENT_IS_CONS(params->client)) { |
| 1000 | IPA_USB_ERR("DPL supports only DL channel\n"); |
| 1001 | return false; |
| 1002 | } |
| 1003 | case IPA_USB_RNDIS: |
| 1004 | case IPA_USB_ECM: |
| 1005 | if (ipa3_usb_ctx->teth_prot_ctx[params->teth_prot].state == |
| 1006 | IPA_USB_TETH_PROT_INVALID) { |
| 1007 | IPA_USB_ERR("%s is not initialized\n", |
| 1008 | ipa3_usb_teth_prot_to_string( |
| 1009 | params->teth_prot)); |
| 1010 | return false; |
| 1011 | } |
| 1012 | break; |
| 1013 | case IPA_USB_RMNET: |
| 1014 | case IPA_USB_MBIM: |
| 1015 | if (ipa3_usb_ctx->teth_prot_ctx[params->teth_prot].state == |
| 1016 | IPA_USB_TETH_PROT_INVALID) { |
| 1017 | IPA_USB_ERR("%s is not initialized\n", |
| 1018 | ipa3_usb_teth_bridge_prot_to_string( |
| 1019 | params->teth_prot)); |
| 1020 | return false; |
| 1021 | } |
| 1022 | break; |
| 1023 | default: |
| 1024 | IPA_USB_ERR("Unknown tethering protocol (%d)\n", |
| 1025 | params->teth_prot); |
| 1026 | return false; |
| 1027 | } |
| 1028 | return true; |
| 1029 | } |
| 1030 | |
| 1031 | static int ipa3_usb_smmu_map_xdci_channel( |
| 1032 | struct ipa_usb_xdci_chan_params *params, bool map) |
| 1033 | { |
| 1034 | int result; |
| 1035 | u32 gevntcount_r = rounddown(params->gevntcount_low_addr, PAGE_SIZE); |
| 1036 | u32 xfer_scratch_r = |
| 1037 | rounddown(params->xfer_scratch.depcmd_low_addr, PAGE_SIZE); |
| 1038 | |
| 1039 | if (gevntcount_r != xfer_scratch_r) { |
| 1040 | IPA_USB_ERR("No support more than 1 page map for USB regs\n"); |
| 1041 | WARN_ON(1); |
| 1042 | return -EINVAL; |
| 1043 | } |
| 1044 | |
| 1045 | if (map) { |
| 1046 | if (ipa3_usb_ctx->smmu_reg_map.cnt == 0) { |
| 1047 | ipa3_usb_ctx->smmu_reg_map.addr = gevntcount_r; |
| 1048 | result = ipa3_smmu_map_peer_reg( |
| 1049 | ipa3_usb_ctx->smmu_reg_map.addr, true); |
| 1050 | if (result) { |
| 1051 | IPA_USB_ERR("failed to map USB regs %d\n", |
| 1052 | result); |
| 1053 | return result; |
| 1054 | } |
| 1055 | } else { |
| 1056 | if (gevntcount_r != ipa3_usb_ctx->smmu_reg_map.addr) { |
| 1057 | IPA_USB_ERR( |
| 1058 | "No support for map different reg\n"); |
| 1059 | return -EINVAL; |
| 1060 | } |
| 1061 | } |
| 1062 | ipa3_usb_ctx->smmu_reg_map.cnt++; |
| 1063 | } else { |
| 1064 | if (gevntcount_r != ipa3_usb_ctx->smmu_reg_map.addr) { |
| 1065 | IPA_USB_ERR( |
| 1066 | "No support for map different reg\n"); |
| 1067 | return -EINVAL; |
| 1068 | } |
| 1069 | |
| 1070 | if (ipa3_usb_ctx->smmu_reg_map.cnt == 1) { |
| 1071 | result = ipa3_smmu_map_peer_reg( |
| 1072 | ipa3_usb_ctx->smmu_reg_map.addr, false); |
| 1073 | if (result) { |
| 1074 | IPA_USB_ERR("failed to unmap USB regs %d\n", |
| 1075 | result); |
| 1076 | return result; |
| 1077 | } |
| 1078 | } |
| 1079 | ipa3_usb_ctx->smmu_reg_map.cnt--; |
| 1080 | } |
| 1081 | |
| 1082 | result = ipa3_smmu_map_peer_buff(params->xfer_ring_base_addr_iova, |
| 1083 | params->xfer_ring_base_addr, params->xfer_ring_len, map); |
| 1084 | if (result) { |
| 1085 | IPA_USB_ERR("failed to map Xfer ring %d\n", result); |
| 1086 | return result; |
| 1087 | } |
| 1088 | |
| 1089 | result = ipa3_smmu_map_peer_buff(params->data_buff_base_addr_iova, |
| 1090 | params->data_buff_base_addr, params->data_buff_base_len, map); |
| 1091 | if (result) { |
| 1092 | IPA_USB_ERR("failed to map TRBs buff %d\n", result); |
| 1093 | return result; |
| 1094 | } |
| 1095 | |
| 1096 | return 0; |
| 1097 | } |
| 1098 | |
| 1099 | static int ipa3_usb_request_xdci_channel( |
| 1100 | struct ipa_usb_xdci_chan_params *params, |
| 1101 | struct ipa_req_chan_out_params *out_params) |
| 1102 | { |
| 1103 | int result = -EFAULT; |
| 1104 | struct ipa_request_gsi_channel_params chan_params; |
| 1105 | enum ipa3_usb_transport_type ttype; |
| 1106 | |
| 1107 | IPA_USB_DBG_LOW("entry\n"); |
| 1108 | if (params == NULL || out_params == NULL || |
| 1109 | !ipa3_usb_check_chan_params(params)) { |
| 1110 | IPA_USB_ERR("bad parameters\n"); |
| 1111 | return -EINVAL; |
| 1112 | } |
| 1113 | |
| 1114 | ttype = IPA3_USB_GET_TTYPE(params->teth_prot); |
| 1115 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1116 | if (!ipa3_usb_check_legal_op(IPA_USB_OP_REQUEST_CHANNEL, ttype)) { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1117 | IPA_USB_ERR("Illegal operation\n"); |
| 1118 | return -EPERM; |
| 1119 | } |
| 1120 | |
| 1121 | memset(&chan_params, 0, sizeof(struct ipa_request_gsi_channel_params)); |
| 1122 | memcpy(&chan_params.ipa_ep_cfg, ¶ms->ipa_ep_cfg, |
| 1123 | sizeof(struct ipa_ep_cfg)); |
| 1124 | chan_params.client = params->client; |
| 1125 | switch (params->teth_prot) { |
| 1126 | case IPA_USB_RNDIS: |
| 1127 | chan_params.priv = ipa3_usb_ctx->teth_prot_ctx[IPA_USB_RNDIS]. |
| 1128 | teth_prot_params.rndis.private; |
| 1129 | if (params->dir == GSI_CHAN_DIR_FROM_GSI) |
| 1130 | chan_params.notify = |
| 1131 | ipa3_usb_ctx->teth_prot_ctx[IPA_USB_RNDIS]. |
| 1132 | teth_prot_params.rndis.ipa_tx_notify; |
| 1133 | else |
| 1134 | chan_params.notify = |
| 1135 | ipa3_usb_ctx->teth_prot_ctx[IPA_USB_RNDIS]. |
| 1136 | teth_prot_params.rndis.ipa_rx_notify; |
| 1137 | chan_params.skip_ep_cfg = |
| 1138 | ipa3_usb_ctx->teth_prot_ctx[IPA_USB_RNDIS]. |
| 1139 | teth_prot_params.rndis.skip_ep_cfg; |
| 1140 | break; |
| 1141 | case IPA_USB_ECM: |
| 1142 | chan_params.priv = ipa3_usb_ctx->teth_prot_ctx[IPA_USB_ECM]. |
| 1143 | teth_prot_params.ecm.private; |
| 1144 | if (params->dir == GSI_CHAN_DIR_FROM_GSI) |
| 1145 | chan_params.notify = |
| 1146 | ipa3_usb_ctx->teth_prot_ctx[IPA_USB_ECM]. |
| 1147 | teth_prot_params.ecm.ecm_ipa_tx_dp_notify; |
| 1148 | else |
| 1149 | chan_params.notify = |
| 1150 | ipa3_usb_ctx->teth_prot_ctx[IPA_USB_ECM]. |
| 1151 | teth_prot_params.ecm.ecm_ipa_rx_dp_notify; |
| 1152 | chan_params.skip_ep_cfg = |
| 1153 | ipa3_usb_ctx->teth_prot_ctx[IPA_USB_ECM]. |
| 1154 | teth_prot_params.ecm.skip_ep_cfg; |
| 1155 | break; |
| 1156 | case IPA_USB_RMNET: |
| 1157 | case IPA_USB_MBIM: |
| 1158 | chan_params.priv = |
| 1159 | ipa3_usb_ctx->teth_bridge_params.private_data; |
| 1160 | chan_params.notify = |
| 1161 | ipa3_usb_ctx->teth_bridge_params.usb_notify_cb; |
| 1162 | chan_params.skip_ep_cfg = |
| 1163 | ipa3_usb_ctx->teth_bridge_params.skip_ep_cfg; |
| 1164 | break; |
| 1165 | case IPA_USB_DIAG: |
| 1166 | chan_params.priv = NULL; |
| 1167 | chan_params.notify = NULL; |
| 1168 | chan_params.skip_ep_cfg = true; |
| 1169 | break; |
| 1170 | default: |
| 1171 | break; |
| 1172 | } |
| 1173 | |
| 1174 | result = ipa3_usb_smmu_map_xdci_channel(params, true); |
| 1175 | if (result) { |
| 1176 | IPA_USB_ERR("failed to smmu map %d\n", result); |
| 1177 | return result; |
| 1178 | } |
| 1179 | |
| 1180 | /* store channel params for SMMU unmap */ |
| 1181 | ipa3_usb_ctx->ttype_ctx[ttype].ch_params = *params; |
| 1182 | |
| 1183 | chan_params.keep_ipa_awake = params->keep_ipa_awake; |
| 1184 | chan_params.evt_ring_params.intf = GSI_EVT_CHTYPE_XDCI_EV; |
| 1185 | chan_params.evt_ring_params.intr = GSI_INTR_IRQ; |
| 1186 | chan_params.evt_ring_params.re_size = GSI_EVT_RING_RE_SIZE_16B; |
| 1187 | chan_params.evt_ring_params.ring_len = params->xfer_ring_len - |
| 1188 | chan_params.evt_ring_params.re_size; |
| 1189 | chan_params.evt_ring_params.ring_base_addr = |
| 1190 | params->xfer_ring_base_addr; |
| 1191 | chan_params.evt_ring_params.ring_base_vaddr = NULL; |
| 1192 | chan_params.evt_ring_params.int_modt = 0; |
| 1193 | chan_params.evt_ring_params.int_modt = 0; |
| 1194 | chan_params.evt_ring_params.intvec = 0; |
| 1195 | chan_params.evt_ring_params.msi_addr = 0; |
| 1196 | chan_params.evt_ring_params.rp_update_addr = 0; |
| 1197 | chan_params.evt_ring_params.exclusive = true; |
| 1198 | chan_params.evt_ring_params.err_cb = ipa3_usb_gsi_evt_err_cb; |
| 1199 | chan_params.evt_ring_params.user_data = NULL; |
| 1200 | chan_params.evt_scratch.xdci.gevntcount_low_addr = |
| 1201 | params->gevntcount_low_addr; |
| 1202 | chan_params.evt_scratch.xdci.gevntcount_hi_addr = |
| 1203 | params->gevntcount_hi_addr; |
| 1204 | chan_params.chan_params.prot = GSI_CHAN_PROT_XDCI; |
| 1205 | chan_params.chan_params.dir = params->dir; |
| 1206 | /* chan_id is set in ipa3_request_gsi_channel() */ |
| 1207 | chan_params.chan_params.re_size = GSI_CHAN_RE_SIZE_16B; |
| 1208 | chan_params.chan_params.ring_len = params->xfer_ring_len; |
| 1209 | chan_params.chan_params.ring_base_addr = |
| 1210 | params->xfer_ring_base_addr; |
| 1211 | chan_params.chan_params.ring_base_vaddr = NULL; |
| 1212 | chan_params.chan_params.use_db_eng = GSI_CHAN_DB_MODE; |
| 1213 | chan_params.chan_params.max_prefetch = GSI_ONE_PREFETCH_SEG; |
| 1214 | if (params->dir == GSI_CHAN_DIR_FROM_GSI) |
| 1215 | chan_params.chan_params.low_weight = |
| 1216 | IPA_USB_DL_CHAN_LOW_WEIGHT; |
| 1217 | else |
| 1218 | chan_params.chan_params.low_weight = |
| 1219 | IPA_USB_UL_CHAN_LOW_WEIGHT; |
| 1220 | chan_params.chan_params.xfer_cb = NULL; |
| 1221 | chan_params.chan_params.err_cb = ipa3_usb_gsi_chan_err_cb; |
| 1222 | chan_params.chan_params.chan_user_data = NULL; |
| 1223 | chan_params.chan_scratch.xdci.last_trb_addr = |
| 1224 | params->xfer_scratch.last_trb_addr_iova; |
| 1225 | /* xferrscidx will be updated later */ |
| 1226 | chan_params.chan_scratch.xdci.xferrscidx = 0; |
| 1227 | chan_params.chan_scratch.xdci.const_buffer_size = |
| 1228 | params->xfer_scratch.const_buffer_size; |
| 1229 | chan_params.chan_scratch.xdci.depcmd_low_addr = |
| 1230 | params->xfer_scratch.depcmd_low_addr; |
| 1231 | chan_params.chan_scratch.xdci.depcmd_hi_addr = |
| 1232 | params->xfer_scratch.depcmd_hi_addr; |
| 1233 | chan_params.chan_scratch.xdci.outstanding_threshold = |
| 1234 | ((params->teth_prot == IPA_USB_MBIM) ? 1 : 2) * |
| 1235 | chan_params.chan_params.re_size; |
| 1236 | /* max_outstanding_tre is set in ipa3_request_gsi_channel() */ |
| 1237 | result = ipa3_request_gsi_channel(&chan_params, out_params); |
| 1238 | if (result) { |
| 1239 | IPA_USB_ERR("failed to allocate GSI channel\n"); |
| 1240 | ipa3_usb_smmu_map_xdci_channel(params, false); |
| 1241 | return result; |
| 1242 | } |
| 1243 | |
| 1244 | IPA_USB_DBG_LOW("exit\n"); |
| 1245 | return 0; |
| 1246 | } |
| 1247 | |
| 1248 | static int ipa3_usb_release_xdci_channel(u32 clnt_hdl, |
| 1249 | enum ipa3_usb_transport_type ttype) |
| 1250 | { |
| 1251 | int result = 0; |
| 1252 | |
| 1253 | IPA_USB_DBG_LOW("entry\n"); |
| 1254 | if (ttype > IPA_USB_TRANSPORT_MAX) { |
| 1255 | IPA_USB_ERR("bad parameter.\n"); |
| 1256 | return -EINVAL; |
| 1257 | } |
| 1258 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1259 | if (!ipa3_usb_check_legal_op(IPA_USB_OP_RELEASE_CHANNEL, ttype)) { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1260 | IPA_USB_ERR("Illegal operation.\n"); |
| 1261 | return -EPERM; |
| 1262 | } |
| 1263 | |
| 1264 | /* Release channel */ |
| 1265 | result = ipa3_release_gsi_channel(clnt_hdl); |
| 1266 | if (result) { |
| 1267 | IPA_USB_ERR("failed to deallocate channel.\n"); |
| 1268 | return result; |
| 1269 | } |
| 1270 | |
| 1271 | result = ipa3_usb_smmu_map_xdci_channel( |
| 1272 | &ipa3_usb_ctx->ttype_ctx[ttype].ch_params, false); |
| 1273 | |
| 1274 | /* Change ipa_usb state to INITIALIZED */ |
| 1275 | if (!ipa3_usb_set_state(IPA_USB_INITIALIZED, false, ttype)) |
| 1276 | IPA_USB_ERR("failed to change state to initialized\n"); |
| 1277 | |
| 1278 | IPA_USB_DBG_LOW("exit\n"); |
| 1279 | return 0; |
| 1280 | } |
| 1281 | |
| 1282 | static int ipa3_usb_request_prod(enum ipa3_usb_transport_type ttype) |
| 1283 | { |
| 1284 | int result; |
| 1285 | struct ipa3_usb_rm_context *rm_ctx; |
| 1286 | const char *rsrc_str; |
| 1287 | |
| 1288 | rm_ctx = &ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx; |
| 1289 | rsrc_str = ipa_rm_resource_str(rm_ctx->prod_params.name); |
| 1290 | |
| 1291 | IPA_USB_DBG_LOW("requesting %s\n", rsrc_str); |
| 1292 | init_completion(&rm_ctx->prod_comp); |
| 1293 | result = ipa_rm_request_resource(rm_ctx->prod_params.name); |
| 1294 | if (result) { |
| 1295 | if (result != -EINPROGRESS) { |
| 1296 | IPA_USB_ERR("failed to request %s: %d\n", |
| 1297 | rsrc_str, result); |
| 1298 | return result; |
| 1299 | } |
| 1300 | result = wait_for_completion_timeout(&rm_ctx->prod_comp, |
| 1301 | msecs_to_jiffies(IPA_USB_RM_TIMEOUT_MSEC)); |
| 1302 | if (result == 0) { |
| 1303 | IPA_USB_ERR("timeout request %s\n", rsrc_str); |
| 1304 | return -ETIME; |
| 1305 | } |
| 1306 | } |
| 1307 | |
| 1308 | IPA_USB_DBG_LOW("%s granted\n", rsrc_str); |
| 1309 | return 0; |
| 1310 | } |
| 1311 | |
| 1312 | static int ipa3_usb_release_prod(enum ipa3_usb_transport_type ttype) |
| 1313 | { |
| 1314 | int result; |
| 1315 | struct ipa3_usb_rm_context *rm_ctx; |
| 1316 | const char *rsrc_str; |
| 1317 | |
| 1318 | rm_ctx = &ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx; |
| 1319 | rsrc_str = ipa_rm_resource_str(rm_ctx->prod_params.name); |
| 1320 | |
| 1321 | IPA_USB_DBG_LOW("releasing %s\n", rsrc_str); |
| 1322 | |
| 1323 | init_completion(&rm_ctx->prod_comp); |
| 1324 | result = ipa_rm_release_resource(rm_ctx->prod_params.name); |
| 1325 | if (result) { |
| 1326 | if (result != -EINPROGRESS) { |
| 1327 | IPA_USB_ERR("failed to release %s: %d\n", |
| 1328 | rsrc_str, result); |
| 1329 | return result; |
| 1330 | } |
| 1331 | result = wait_for_completion_timeout(&rm_ctx->prod_comp, |
| 1332 | msecs_to_jiffies(IPA_USB_RM_TIMEOUT_MSEC)); |
| 1333 | if (result == 0) { |
| 1334 | IPA_USB_ERR("timeout release %s\n", rsrc_str); |
| 1335 | return -ETIME; |
| 1336 | } |
| 1337 | } |
| 1338 | |
| 1339 | IPA_USB_DBG_LOW("%s released\n", rsrc_str); |
| 1340 | return 0; |
| 1341 | } |
| 1342 | |
| 1343 | static bool ipa3_usb_check_connect_params( |
| 1344 | struct ipa_usb_xdci_connect_params_internal *params) |
| 1345 | { |
| 1346 | IPA_USB_DBG_LOW("ul xferrscidx = %d\n", params->usb_to_ipa_xferrscidx); |
| 1347 | IPA_USB_DBG_LOW("dl xferrscidx = %d\n", params->ipa_to_usb_xferrscidx); |
| 1348 | IPA_USB_DBG_LOW("max_supported_bandwidth_mbps = %d\n", |
| 1349 | params->max_supported_bandwidth_mbps); |
| 1350 | |
| 1351 | if (params->max_pkt_size < IPA_USB_HIGH_SPEED_512B || |
| 1352 | params->max_pkt_size > IPA_USB_SUPER_SPEED_1024B || |
| 1353 | params->ipa_to_usb_xferrscidx < 0 || |
| 1354 | params->ipa_to_usb_xferrscidx > 127 || |
| 1355 | (params->teth_prot != IPA_USB_DIAG && |
| 1356 | (params->usb_to_ipa_xferrscidx < 0 || |
| 1357 | params->usb_to_ipa_xferrscidx > 127)) || |
| 1358 | params->teth_prot > IPA_USB_MAX_TETH_PROT_SIZE) { |
| 1359 | IPA_USB_ERR("Invalid params\n"); |
| 1360 | return false; |
| 1361 | } |
| 1362 | |
| 1363 | if (ipa3_usb_ctx->teth_prot_ctx[params->teth_prot].state == |
| 1364 | IPA_USB_TETH_PROT_INVALID) { |
| 1365 | IPA_USB_ERR("%s is not initialized\n", |
| 1366 | ipa3_usb_teth_prot_to_string( |
| 1367 | params->teth_prot)); |
| 1368 | return false; |
| 1369 | } |
| 1370 | |
| 1371 | return true; |
| 1372 | } |
| 1373 | |
| 1374 | static int ipa3_usb_connect_teth_bridge( |
| 1375 | struct teth_bridge_connect_params *params) |
| 1376 | { |
| 1377 | int result; |
| 1378 | |
| 1379 | result = teth_bridge_connect(params); |
| 1380 | if (result) { |
| 1381 | IPA_USB_ERR("failed to connect teth_bridge (%s)\n", |
| 1382 | params->tethering_mode == TETH_TETHERING_MODE_RMNET ? |
| 1383 | "rmnet" : "mbim"); |
| 1384 | return result; |
| 1385 | } |
| 1386 | |
| 1387 | return 0; |
| 1388 | } |
| 1389 | |
| 1390 | static int ipa3_usb_connect_dpl(void) |
| 1391 | { |
| 1392 | int res = 0; |
| 1393 | |
| 1394 | /* |
| 1395 | * Add DPL dependency to RM dependency graph, first add_dependency call |
| 1396 | * is sync in order to make sure the IPA clocks are up before we |
| 1397 | * continue and notify the USB driver it may continue. |
| 1398 | */ |
| 1399 | res = ipa_rm_add_dependency_sync(IPA_RM_RESOURCE_USB_DPL_DUMMY_PROD, |
| 1400 | IPA_RM_RESOURCE_Q6_CONS); |
| 1401 | if (res < 0) { |
| 1402 | IPA_USB_ERR("ipa_rm_add_dependency_sync() failed.\n"); |
| 1403 | return res; |
| 1404 | } |
| 1405 | |
| 1406 | /* |
| 1407 | * this add_dependency call can't be sync since it will block until DPL |
| 1408 | * status is connected (which can happen only later in the flow), |
| 1409 | * the clocks are already up so the call doesn't need to block. |
| 1410 | */ |
| 1411 | res = ipa_rm_add_dependency(IPA_RM_RESOURCE_Q6_PROD, |
| 1412 | IPA_RM_RESOURCE_USB_DPL_CONS); |
| 1413 | if (res < 0 && res != -EINPROGRESS) { |
| 1414 | IPA_USB_ERR("ipa_rm_add_dependency() failed.\n"); |
| 1415 | ipa_rm_delete_dependency(IPA_RM_RESOURCE_USB_DPL_DUMMY_PROD, |
| 1416 | IPA_RM_RESOURCE_Q6_CONS); |
| 1417 | return res; |
| 1418 | } |
| 1419 | |
| 1420 | return 0; |
| 1421 | } |
| 1422 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1423 | static int ipa3_usb_connect_teth_prot(enum ipa_usb_teth_prot teth_prot) |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1424 | { |
| 1425 | int result; |
| 1426 | struct teth_bridge_connect_params teth_bridge_params; |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1427 | struct ipa3_usb_teth_prot_conn_params *teth_conn_params; |
| 1428 | enum ipa3_usb_transport_type ttype; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1429 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1430 | IPA_USB_DBG("connecting protocol = %s\n", |
| 1431 | ipa3_usb_teth_prot_to_string(teth_prot)); |
| 1432 | |
| 1433 | ttype = IPA3_USB_GET_TTYPE(teth_prot); |
| 1434 | |
| 1435 | teth_conn_params = &(ipa3_usb_ctx->ttype_ctx[ttype].teth_conn_params); |
| 1436 | |
| 1437 | switch (teth_prot) { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1438 | case IPA_USB_RNDIS: |
| 1439 | if (ipa3_usb_ctx->teth_prot_ctx[IPA_USB_RNDIS].state == |
| 1440 | IPA_USB_TETH_PROT_CONNECTED) { |
| 1441 | IPA_USB_DBG("%s is already connected.\n", |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1442 | ipa3_usb_teth_prot_to_string(teth_prot)); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1443 | break; |
| 1444 | } |
| 1445 | ipa3_usb_ctx->ttype_ctx[ttype].user_data = |
| 1446 | ipa3_usb_ctx->teth_prot_ctx[IPA_USB_RNDIS].user_data; |
| 1447 | result = rndis_ipa_pipe_connect_notify( |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1448 | teth_conn_params->usb_to_ipa_clnt_hdl, |
| 1449 | teth_conn_params->ipa_to_usb_clnt_hdl, |
| 1450 | teth_conn_params->params.max_xfer_size_bytes_to_dev, |
| 1451 | teth_conn_params->params.max_packet_number_to_dev, |
| 1452 | teth_conn_params->params.max_xfer_size_bytes_to_host, |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1453 | ipa3_usb_ctx->teth_prot_ctx[IPA_USB_RNDIS]. |
| 1454 | teth_prot_params.rndis.private); |
| 1455 | if (result) { |
| 1456 | IPA_USB_ERR("failed to connect %s.\n", |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1457 | ipa3_usb_teth_prot_to_string(teth_prot)); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1458 | ipa3_usb_ctx->ttype_ctx[ttype].user_data = NULL; |
| 1459 | return result; |
| 1460 | } |
| 1461 | ipa3_usb_ctx->teth_prot_ctx[IPA_USB_RNDIS].state = |
| 1462 | IPA_USB_TETH_PROT_CONNECTED; |
| 1463 | IPA_USB_DBG("%s is connected.\n", |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1464 | ipa3_usb_teth_prot_to_string(teth_prot)); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1465 | break; |
| 1466 | case IPA_USB_ECM: |
| 1467 | if (ipa3_usb_ctx->teth_prot_ctx[IPA_USB_ECM].state == |
| 1468 | IPA_USB_TETH_PROT_CONNECTED) { |
| 1469 | IPA_USB_DBG("%s is already connected.\n", |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1470 | ipa3_usb_teth_prot_to_string(teth_prot)); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1471 | break; |
| 1472 | } |
| 1473 | ipa3_usb_ctx->ttype_ctx[ttype].user_data = |
| 1474 | ipa3_usb_ctx->teth_prot_ctx[IPA_USB_ECM].user_data; |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1475 | result = ecm_ipa_connect(teth_conn_params->usb_to_ipa_clnt_hdl, |
| 1476 | teth_conn_params->ipa_to_usb_clnt_hdl, |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1477 | ipa3_usb_ctx->teth_prot_ctx[IPA_USB_ECM]. |
| 1478 | teth_prot_params.ecm.private); |
| 1479 | if (result) { |
| 1480 | IPA_USB_ERR("failed to connect %s.\n", |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1481 | ipa3_usb_teth_prot_to_string(teth_prot)); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1482 | ipa3_usb_ctx->ttype_ctx[ttype].user_data = NULL; |
| 1483 | return result; |
| 1484 | } |
| 1485 | ipa3_usb_ctx->teth_prot_ctx[IPA_USB_ECM].state = |
| 1486 | IPA_USB_TETH_PROT_CONNECTED; |
| 1487 | IPA_USB_DBG("%s is connected.\n", |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1488 | ipa3_usb_teth_prot_to_string(teth_prot)); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1489 | break; |
| 1490 | case IPA_USB_RMNET: |
| 1491 | case IPA_USB_MBIM: |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1492 | if (ipa3_usb_ctx->teth_prot_ctx[teth_prot].state == |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1493 | IPA_USB_TETH_PROT_CONNECTED) { |
| 1494 | IPA_USB_DBG("%s is already connected.\n", |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1495 | ipa3_usb_teth_prot_to_string(teth_prot)); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1496 | break; |
| 1497 | } |
| 1498 | result = ipa3_usb_init_teth_bridge(); |
| 1499 | if (result) |
| 1500 | return result; |
| 1501 | |
| 1502 | ipa3_usb_ctx->ttype_ctx[ttype].user_data = |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1503 | ipa3_usb_ctx->teth_prot_ctx[teth_prot]. |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1504 | user_data; |
| 1505 | teth_bridge_params.ipa_usb_pipe_hdl = |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1506 | teth_conn_params->ipa_to_usb_clnt_hdl; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1507 | teth_bridge_params.usb_ipa_pipe_hdl = |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1508 | teth_conn_params->usb_to_ipa_clnt_hdl; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1509 | teth_bridge_params.tethering_mode = |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1510 | (teth_prot == IPA_USB_RMNET) ? |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1511 | (TETH_TETHERING_MODE_RMNET):(TETH_TETHERING_MODE_MBIM); |
| 1512 | teth_bridge_params.client_type = IPA_CLIENT_USB_PROD; |
| 1513 | result = ipa3_usb_connect_teth_bridge(&teth_bridge_params); |
| 1514 | if (result) { |
| 1515 | ipa3_usb_ctx->ttype_ctx[ttype].user_data = NULL; |
| 1516 | return result; |
| 1517 | } |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1518 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].state = |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1519 | IPA_USB_TETH_PROT_CONNECTED; |
| 1520 | ipa3_usb_notify_do(ttype, IPA_USB_DEVICE_READY); |
| 1521 | IPA_USB_DBG("%s (%s) is connected.\n", |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1522 | ipa3_usb_teth_prot_to_string(teth_prot), |
| 1523 | ipa3_usb_teth_bridge_prot_to_string(teth_prot)); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1524 | break; |
| 1525 | case IPA_USB_DIAG: |
| 1526 | if (ipa3_usb_ctx->teth_prot_ctx[IPA_USB_DIAG].state == |
| 1527 | IPA_USB_TETH_PROT_CONNECTED) { |
| 1528 | IPA_USB_DBG("%s is already connected.\n", |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1529 | ipa3_usb_teth_prot_to_string(teth_prot)); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1530 | break; |
| 1531 | } |
| 1532 | |
| 1533 | ipa3_usb_ctx->ttype_ctx[ttype].user_data = |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1534 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].user_data; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1535 | result = ipa3_usb_connect_dpl(); |
| 1536 | if (result) { |
| 1537 | IPA_USB_ERR("Failed connecting DPL result=%d\n", |
| 1538 | result); |
| 1539 | ipa3_usb_ctx->ttype_ctx[ttype].user_data = NULL; |
| 1540 | return result; |
| 1541 | } |
| 1542 | ipa3_usb_ctx->teth_prot_ctx[IPA_USB_DIAG].state = |
| 1543 | IPA_USB_TETH_PROT_CONNECTED; |
| 1544 | ipa3_usb_notify_do(ttype, IPA_USB_DEVICE_READY); |
| 1545 | IPA_USB_DBG("%s is connected.\n", |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1546 | ipa3_usb_teth_prot_to_string(teth_prot)); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1547 | break; |
| 1548 | default: |
| 1549 | IPA_USB_ERR("Invalid tethering protocol\n"); |
| 1550 | return -EFAULT; |
| 1551 | } |
| 1552 | |
| 1553 | return 0; |
| 1554 | } |
| 1555 | |
| 1556 | static int ipa3_usb_disconnect_teth_bridge(void) |
| 1557 | { |
| 1558 | int result; |
| 1559 | |
| 1560 | result = teth_bridge_disconnect(IPA_CLIENT_USB_PROD); |
| 1561 | if (result) { |
| 1562 | IPA_USB_ERR("failed to disconnect teth_bridge.\n"); |
| 1563 | return result; |
| 1564 | } |
| 1565 | |
| 1566 | return 0; |
| 1567 | } |
| 1568 | |
| 1569 | static int ipa3_usb_disconnect_dpl(void) |
| 1570 | { |
| 1571 | int res; |
| 1572 | |
| 1573 | /* Remove DPL RM dependency */ |
| 1574 | res = ipa_rm_delete_dependency(IPA_RM_RESOURCE_USB_DPL_DUMMY_PROD, |
| 1575 | IPA_RM_RESOURCE_Q6_CONS); |
| 1576 | if (res) |
| 1577 | IPA_USB_ERR("deleting DPL_DUMMY_PROD rsrc dependency fail\n"); |
| 1578 | |
| 1579 | res = ipa_rm_delete_dependency(IPA_RM_RESOURCE_Q6_PROD, |
| 1580 | IPA_RM_RESOURCE_USB_DPL_CONS); |
| 1581 | if (res) |
| 1582 | IPA_USB_ERR("deleting DPL_CONS rsrc dependencty fail\n"); |
| 1583 | |
| 1584 | return 0; |
| 1585 | } |
| 1586 | |
| 1587 | static int ipa3_usb_disconnect_teth_prot(enum ipa_usb_teth_prot teth_prot) |
| 1588 | { |
| 1589 | int result = 0; |
| 1590 | enum ipa3_usb_transport_type ttype; |
| 1591 | |
| 1592 | ttype = IPA3_USB_GET_TTYPE(teth_prot); |
| 1593 | |
| 1594 | switch (teth_prot) { |
| 1595 | case IPA_USB_RNDIS: |
| 1596 | case IPA_USB_ECM: |
| 1597 | if (ipa3_usb_ctx->teth_prot_ctx[teth_prot].state != |
| 1598 | IPA_USB_TETH_PROT_CONNECTED) { |
| 1599 | IPA_USB_DBG("%s is not connected.\n", |
| 1600 | ipa3_usb_teth_prot_to_string(teth_prot)); |
| 1601 | return -EPERM; |
| 1602 | } |
| 1603 | if (teth_prot == IPA_USB_RNDIS) { |
| 1604 | result = rndis_ipa_pipe_disconnect_notify( |
| 1605 | ipa3_usb_ctx->teth_prot_ctx[teth_prot]. |
| 1606 | teth_prot_params.rndis.private); |
| 1607 | } else { |
| 1608 | result = ecm_ipa_disconnect( |
| 1609 | ipa3_usb_ctx->teth_prot_ctx[teth_prot]. |
| 1610 | teth_prot_params.ecm.private); |
| 1611 | } |
| 1612 | if (result) { |
| 1613 | IPA_USB_ERR("failed to disconnect %s.\n", |
| 1614 | ipa3_usb_teth_prot_to_string(teth_prot)); |
| 1615 | break; |
| 1616 | } |
| 1617 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].state = |
| 1618 | IPA_USB_TETH_PROT_INITIALIZED; |
| 1619 | IPA_USB_DBG("disconnected %s\n", |
| 1620 | ipa3_usb_teth_prot_to_string(teth_prot)); |
| 1621 | break; |
| 1622 | case IPA_USB_RMNET: |
| 1623 | case IPA_USB_MBIM: |
| 1624 | if (ipa3_usb_ctx->teth_prot_ctx[teth_prot].state != |
| 1625 | IPA_USB_TETH_PROT_CONNECTED) { |
| 1626 | IPA_USB_DBG("%s (%s) is not connected.\n", |
| 1627 | ipa3_usb_teth_prot_to_string(teth_prot), |
| 1628 | ipa3_usb_teth_bridge_prot_to_string(teth_prot)); |
| 1629 | return -EPERM; |
| 1630 | } |
| 1631 | result = ipa3_usb_disconnect_teth_bridge(); |
| 1632 | if (result) |
| 1633 | break; |
| 1634 | |
| 1635 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].state = |
| 1636 | IPA_USB_TETH_PROT_INITIALIZED; |
| 1637 | IPA_USB_DBG("disconnected %s (%s)\n", |
| 1638 | ipa3_usb_teth_prot_to_string(teth_prot), |
| 1639 | ipa3_usb_teth_bridge_prot_to_string(teth_prot)); |
| 1640 | break; |
| 1641 | case IPA_USB_DIAG: |
| 1642 | if (ipa3_usb_ctx->teth_prot_ctx[teth_prot].state != |
| 1643 | IPA_USB_TETH_PROT_CONNECTED) { |
| 1644 | IPA_USB_DBG("%s is not connected.\n", |
| 1645 | ipa3_usb_teth_prot_to_string(teth_prot)); |
| 1646 | return -EPERM; |
| 1647 | } |
| 1648 | result = ipa3_usb_disconnect_dpl(); |
| 1649 | if (result) |
| 1650 | break; |
| 1651 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].state = |
| 1652 | IPA_USB_TETH_PROT_INITIALIZED; |
| 1653 | IPA_USB_DBG("disconnected %s\n", |
| 1654 | ipa3_usb_teth_prot_to_string(teth_prot)); |
| 1655 | break; |
| 1656 | default: |
| 1657 | break; |
| 1658 | } |
| 1659 | |
| 1660 | ipa3_usb_ctx->ttype_ctx[ttype].user_data = NULL; |
| 1661 | return result; |
| 1662 | } |
| 1663 | |
| 1664 | static int ipa3_usb_xdci_connect_internal( |
| 1665 | struct ipa_usb_xdci_connect_params_internal *params) |
| 1666 | { |
| 1667 | int result = -EFAULT; |
| 1668 | struct ipa_rm_perf_profile profile; |
| 1669 | enum ipa3_usb_transport_type ttype; |
| 1670 | |
| 1671 | IPA_USB_DBG_LOW("entry\n"); |
| 1672 | if (params == NULL || !ipa3_usb_check_connect_params(params)) { |
| 1673 | IPA_USB_ERR("bad parameters.\n"); |
| 1674 | return -EINVAL; |
| 1675 | } |
| 1676 | |
| 1677 | ttype = (params->teth_prot == IPA_USB_DIAG) ? IPA_USB_TRANSPORT_DPL : |
| 1678 | IPA_USB_TRANSPORT_TETH; |
| 1679 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1680 | if (!ipa3_usb_check_legal_op(IPA_USB_OP_CONNECT, ttype)) { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1681 | IPA_USB_ERR("Illegal operation.\n"); |
| 1682 | return -EPERM; |
| 1683 | } |
| 1684 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1685 | ipa3_usb_ctx->ttype_ctx[ttype].teth_conn_params.ipa_to_usb_clnt_hdl |
| 1686 | = params->ipa_to_usb_clnt_hdl; |
| 1687 | if (!IPA3_USB_IS_TTYPE_DPL(ttype)) |
| 1688 | ipa3_usb_ctx->ttype_ctx[ttype].teth_conn_params. |
| 1689 | usb_to_ipa_clnt_hdl = params->usb_to_ipa_clnt_hdl; |
| 1690 | ipa3_usb_ctx->ttype_ctx[ttype].teth_conn_params.params |
| 1691 | = params->teth_prot_params; |
| 1692 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1693 | /* Set EE xDCI specific scratch */ |
| 1694 | result = ipa3_set_usb_max_packet_size(params->max_pkt_size); |
| 1695 | if (result) { |
| 1696 | IPA_USB_ERR("failed setting xDCI EE scratch field\n"); |
| 1697 | return result; |
| 1698 | } |
| 1699 | |
| 1700 | /* Set RM PROD & CONS perf profile */ |
| 1701 | profile.max_supported_bandwidth_mbps = |
| 1702 | params->max_supported_bandwidth_mbps; |
| 1703 | result = ipa_rm_set_perf_profile( |
| 1704 | ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx.prod_params.name, |
| 1705 | &profile); |
| 1706 | if (result) { |
| 1707 | IPA_USB_ERR("failed to set %s perf profile\n", |
| 1708 | ipa_rm_resource_str(ipa3_usb_ctx->ttype_ctx[ttype]. |
| 1709 | rm_ctx.prod_params.name)); |
| 1710 | return result; |
| 1711 | } |
| 1712 | result = ipa_rm_set_perf_profile( |
| 1713 | ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx.cons_params.name, |
| 1714 | &profile); |
| 1715 | if (result) { |
| 1716 | IPA_USB_ERR("failed to set %s perf profile\n", |
| 1717 | ipa_rm_resource_str(ipa3_usb_ctx->ttype_ctx[ttype]. |
| 1718 | rm_ctx.cons_params.name)); |
| 1719 | return result; |
| 1720 | } |
| 1721 | |
| 1722 | /* Request PROD */ |
| 1723 | result = ipa3_usb_request_prod(ttype); |
| 1724 | if (result) |
| 1725 | return result; |
| 1726 | |
| 1727 | if (params->teth_prot != IPA_USB_DIAG) { |
| 1728 | /* Start UL channel */ |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1729 | result = ipa3_xdci_start(params->usb_to_ipa_clnt_hdl, |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1730 | params->usb_to_ipa_xferrscidx, |
| 1731 | params->usb_to_ipa_xferrscidx_valid); |
| 1732 | if (result) { |
| 1733 | IPA_USB_ERR("failed to connect UL channel.\n"); |
| 1734 | goto connect_ul_fail; |
| 1735 | } |
| 1736 | } |
| 1737 | |
| 1738 | /* Start DL/DPL channel */ |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1739 | result = ipa3_xdci_start(params->ipa_to_usb_clnt_hdl, |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1740 | params->ipa_to_usb_xferrscidx, |
| 1741 | params->ipa_to_usb_xferrscidx_valid); |
| 1742 | if (result) { |
| 1743 | IPA_USB_ERR("failed to connect DL/DPL channel.\n"); |
| 1744 | goto connect_dl_fail; |
| 1745 | } |
| 1746 | |
| 1747 | /* Connect tethering protocol */ |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 1748 | result = ipa3_usb_connect_teth_prot(params->teth_prot); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1749 | if (result) { |
| 1750 | IPA_USB_ERR("failed to connect teth protocol\n"); |
| 1751 | goto connect_teth_prot_fail; |
| 1752 | } |
| 1753 | |
| 1754 | if (!ipa3_usb_set_state(IPA_USB_CONNECTED, false, ttype)) { |
| 1755 | IPA_USB_ERR( |
| 1756 | "failed to change state to connected\n"); |
| 1757 | goto state_change_connected_fail; |
| 1758 | } |
| 1759 | |
| 1760 | IPA_USB_DBG_LOW("exit\n"); |
| 1761 | return 0; |
| 1762 | |
| 1763 | state_change_connected_fail: |
| 1764 | ipa3_usb_disconnect_teth_prot(params->teth_prot); |
| 1765 | connect_teth_prot_fail: |
| 1766 | ipa3_xdci_disconnect(params->ipa_to_usb_clnt_hdl, false, -1); |
| 1767 | ipa3_reset_gsi_channel(params->ipa_to_usb_clnt_hdl); |
| 1768 | ipa3_reset_gsi_event_ring(params->ipa_to_usb_clnt_hdl); |
| 1769 | connect_dl_fail: |
| 1770 | if (params->teth_prot != IPA_USB_DIAG) { |
| 1771 | ipa3_xdci_disconnect(params->usb_to_ipa_clnt_hdl, false, -1); |
| 1772 | ipa3_reset_gsi_channel(params->usb_to_ipa_clnt_hdl); |
| 1773 | ipa3_reset_gsi_event_ring(params->usb_to_ipa_clnt_hdl); |
| 1774 | } |
| 1775 | connect_ul_fail: |
| 1776 | ipa3_usb_release_prod(ttype); |
| 1777 | return result; |
| 1778 | } |
| 1779 | |
| 1780 | #ifdef CONFIG_DEBUG_FS |
| 1781 | static char dbg_buff[IPA_USB_MAX_MSG_LEN]; |
| 1782 | |
| 1783 | static char *ipa3_usb_cons_state_to_string(enum ipa3_usb_cons_state state) |
| 1784 | { |
| 1785 | switch (state) { |
| 1786 | case IPA_USB_CONS_GRANTED: |
| 1787 | return "CONS_GRANTED"; |
| 1788 | case IPA_USB_CONS_RELEASED: |
| 1789 | return "CONS_RELEASED"; |
| 1790 | } |
| 1791 | |
| 1792 | return "UNSUPPORTED"; |
| 1793 | } |
| 1794 | |
| 1795 | static int ipa3_usb_get_status_dbg_info(struct ipa3_usb_status_dbg_info *status) |
| 1796 | { |
| 1797 | int res; |
| 1798 | int i; |
| 1799 | unsigned long flags; |
| 1800 | |
| 1801 | IPA_USB_DBG_LOW("entry\n"); |
| 1802 | |
| 1803 | if (ipa3_usb_ctx == NULL) { |
| 1804 | IPA_USB_ERR("IPA USB was not inited yet\n"); |
| 1805 | return -EFAULT; |
| 1806 | } |
| 1807 | |
| 1808 | mutex_lock(&ipa3_usb_ctx->general_mutex); |
| 1809 | |
| 1810 | if (!status) { |
| 1811 | IPA_USB_ERR("Invalid input\n"); |
| 1812 | res = -EINVAL; |
| 1813 | goto bail; |
| 1814 | } |
| 1815 | |
| 1816 | memset(status, 0, sizeof(struct ipa3_usb_status_dbg_info)); |
| 1817 | |
| 1818 | spin_lock_irqsave(&ipa3_usb_ctx->state_lock, flags); |
| 1819 | status->teth_state = ipa3_usb_state_to_string( |
| 1820 | ipa3_usb_ctx->ttype_ctx[IPA_USB_TRANSPORT_TETH].state); |
| 1821 | status->dpl_state = ipa3_usb_state_to_string( |
| 1822 | ipa3_usb_ctx->ttype_ctx[IPA_USB_TRANSPORT_DPL].state); |
| 1823 | if (ipa3_usb_ctx->ttype_ctx[IPA_USB_TRANSPORT_TETH].rm_ctx.cons_valid) |
| 1824 | status->teth_cons_state = ipa3_usb_cons_state_to_string( |
| 1825 | ipa3_usb_ctx->ttype_ctx[IPA_USB_TRANSPORT_TETH]. |
| 1826 | rm_ctx.cons_state); |
| 1827 | if (ipa3_usb_ctx->ttype_ctx[IPA_USB_TRANSPORT_DPL].rm_ctx.cons_valid) |
| 1828 | status->dpl_cons_state = ipa3_usb_cons_state_to_string( |
| 1829 | ipa3_usb_ctx->ttype_ctx[IPA_USB_TRANSPORT_DPL]. |
| 1830 | rm_ctx.cons_state); |
| 1831 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, flags); |
| 1832 | |
| 1833 | for (i = 0 ; i < IPA_USB_MAX_TETH_PROT_SIZE ; i++) { |
| 1834 | if (ipa3_usb_ctx->teth_prot_ctx[i].state == |
| 1835 | IPA_USB_TETH_PROT_INITIALIZED) { |
| 1836 | if ((i == IPA_USB_RMNET) || (i == IPA_USB_MBIM)) |
| 1837 | status->inited_prots[status->num_init_prot++] = |
| 1838 | ipa3_usb_teth_bridge_prot_to_string(i); |
| 1839 | else |
| 1840 | status->inited_prots[status->num_init_prot++] = |
| 1841 | ipa3_usb_teth_prot_to_string(i); |
| 1842 | } else if (ipa3_usb_ctx->teth_prot_ctx[i].state == |
| 1843 | IPA_USB_TETH_PROT_CONNECTED) { |
| 1844 | switch (i) { |
| 1845 | case IPA_USB_RMNET: |
| 1846 | case IPA_USB_MBIM: |
| 1847 | status->teth_connected_prot = |
| 1848 | ipa3_usb_teth_bridge_prot_to_string(i); |
| 1849 | break; |
| 1850 | case IPA_USB_DIAG: |
| 1851 | status->dpl_connected_prot = |
| 1852 | ipa3_usb_teth_prot_to_string(i); |
| 1853 | break; |
| 1854 | default: |
| 1855 | status->teth_connected_prot = |
| 1856 | ipa3_usb_teth_prot_to_string(i); |
| 1857 | } |
| 1858 | } |
| 1859 | } |
| 1860 | |
| 1861 | res = 0; |
| 1862 | IPA_USB_DBG_LOW("exit\n"); |
| 1863 | bail: |
| 1864 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 1865 | return res; |
| 1866 | } |
| 1867 | |
| 1868 | static ssize_t ipa3_read_usb_state_info(struct file *file, char __user *ubuf, |
| 1869 | size_t count, loff_t *ppos) |
| 1870 | { |
| 1871 | struct ipa3_usb_status_dbg_info status; |
| 1872 | int result; |
| 1873 | int nbytes; |
| 1874 | int cnt = 0; |
| 1875 | int i; |
| 1876 | |
| 1877 | result = ipa3_usb_get_status_dbg_info(&status); |
| 1878 | if (result) { |
| 1879 | nbytes = scnprintf(dbg_buff, IPA_USB_MAX_MSG_LEN, |
| 1880 | "Fail to read IPA USB status\n"); |
| 1881 | cnt += nbytes; |
| 1882 | } else { |
| 1883 | nbytes = scnprintf(dbg_buff, IPA_USB_MAX_MSG_LEN, |
| 1884 | "Tethering Data State: %s\n" |
| 1885 | "DPL State: %s\n" |
| 1886 | "Protocols in Initialized State: ", |
| 1887 | status.teth_state, |
| 1888 | status.dpl_state); |
| 1889 | cnt += nbytes; |
| 1890 | |
| 1891 | for (i = 0 ; i < status.num_init_prot ; i++) { |
| 1892 | nbytes = scnprintf(dbg_buff + cnt, |
| 1893 | IPA_USB_MAX_MSG_LEN - cnt, |
| 1894 | "%s ", status.inited_prots[i]); |
| 1895 | cnt += nbytes; |
| 1896 | } |
| 1897 | nbytes = scnprintf(dbg_buff + cnt, IPA_USB_MAX_MSG_LEN - cnt, |
| 1898 | status.num_init_prot ? "\n" : "None\n"); |
| 1899 | cnt += nbytes; |
| 1900 | |
| 1901 | nbytes = scnprintf(dbg_buff + cnt, IPA_USB_MAX_MSG_LEN - cnt, |
| 1902 | "Protocols in Connected State: "); |
| 1903 | cnt += nbytes; |
| 1904 | if (status.teth_connected_prot) { |
| 1905 | nbytes = scnprintf(dbg_buff + cnt, |
| 1906 | IPA_USB_MAX_MSG_LEN - cnt, |
| 1907 | "%s ", status.teth_connected_prot); |
| 1908 | cnt += nbytes; |
| 1909 | } |
| 1910 | if (status.dpl_connected_prot) { |
| 1911 | nbytes = scnprintf(dbg_buff + cnt, |
| 1912 | IPA_USB_MAX_MSG_LEN - cnt, |
| 1913 | "%s ", status.dpl_connected_prot); |
| 1914 | cnt += nbytes; |
| 1915 | } |
| 1916 | nbytes = scnprintf(dbg_buff + cnt, IPA_USB_MAX_MSG_LEN - cnt, |
| 1917 | (status.teth_connected_prot || |
| 1918 | status.dpl_connected_prot) ? "\n" : "None\n"); |
| 1919 | cnt += nbytes; |
| 1920 | |
| 1921 | nbytes = scnprintf(dbg_buff + cnt, IPA_USB_MAX_MSG_LEN - cnt, |
| 1922 | "USB Tethering Consumer State: %s\n", |
| 1923 | status.teth_cons_state ? |
| 1924 | status.teth_cons_state : "Invalid"); |
| 1925 | cnt += nbytes; |
| 1926 | |
| 1927 | nbytes = scnprintf(dbg_buff + cnt, IPA_USB_MAX_MSG_LEN - cnt, |
| 1928 | "DPL Consumer State: %s\n", |
| 1929 | status.dpl_cons_state ? status.dpl_cons_state : |
| 1930 | "Invalid"); |
| 1931 | cnt += nbytes; |
| 1932 | } |
| 1933 | |
| 1934 | return simple_read_from_buffer(ubuf, count, ppos, dbg_buff, cnt); |
| 1935 | } |
| 1936 | |
| 1937 | const struct file_operations ipa3_ipa_usb_ops = { |
| 1938 | .read = ipa3_read_usb_state_info, |
| 1939 | }; |
| 1940 | |
| 1941 | static void ipa_usb_debugfs_init(void) |
| 1942 | { |
| 1943 | const mode_t read_only_mode = S_IRUSR | S_IRGRP | S_IROTH; |
| 1944 | |
| 1945 | ipa3_usb_ctx->dent = debugfs_create_dir("ipa_usb", 0); |
| 1946 | if (IS_ERR(ipa3_usb_ctx->dent)) { |
Gidon Studinski | 3021a6f | 2016-11-10 12:48:48 +0200 | [diff] [blame] | 1947 | pr_err("fail to create folder in debug_fs.\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1948 | return; |
| 1949 | } |
| 1950 | |
| 1951 | ipa3_usb_ctx->dfile_state_info = debugfs_create_file("state_info", |
| 1952 | read_only_mode, ipa3_usb_ctx->dent, 0, |
| 1953 | &ipa3_ipa_usb_ops); |
| 1954 | if (!ipa3_usb_ctx->dfile_state_info || |
| 1955 | IS_ERR(ipa3_usb_ctx->dfile_state_info)) { |
Gidon Studinski | 3021a6f | 2016-11-10 12:48:48 +0200 | [diff] [blame] | 1956 | pr_err("failed to create file for state_info\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1957 | goto fail; |
| 1958 | } |
| 1959 | |
| 1960 | return; |
| 1961 | |
| 1962 | fail: |
| 1963 | debugfs_remove_recursive(ipa3_usb_ctx->dent); |
| 1964 | ipa3_usb_ctx->dent = NULL; |
| 1965 | } |
| 1966 | |
| 1967 | static void ipa_usb_debugfs_remove(void) |
| 1968 | { |
| 1969 | if (IS_ERR(ipa3_usb_ctx->dent)) { |
| 1970 | IPA_USB_ERR("ipa_usb debugfs folder was not created.\n"); |
| 1971 | return; |
| 1972 | } |
| 1973 | |
| 1974 | debugfs_remove_recursive(ipa3_usb_ctx->dent); |
| 1975 | } |
| 1976 | #else /* CONFIG_DEBUG_FS */ |
| 1977 | static void ipa_usb_debugfs_init(void){} |
| 1978 | static void ipa_usb_debugfs_remove(void){} |
| 1979 | #endif /* CONFIG_DEBUG_FS */ |
| 1980 | |
| 1981 | |
| 1982 | |
| 1983 | int ipa_usb_xdci_connect(struct ipa_usb_xdci_chan_params *ul_chan_params, |
| 1984 | struct ipa_usb_xdci_chan_params *dl_chan_params, |
| 1985 | struct ipa_req_chan_out_params *ul_out_params, |
| 1986 | struct ipa_req_chan_out_params *dl_out_params, |
| 1987 | struct ipa_usb_xdci_connect_params *connect_params) |
| 1988 | { |
| 1989 | int result = -EFAULT; |
| 1990 | struct ipa_usb_xdci_connect_params_internal conn_params; |
| 1991 | |
| 1992 | mutex_lock(&ipa3_usb_ctx->general_mutex); |
| 1993 | IPA_USB_DBG_LOW("entry\n"); |
| 1994 | if (connect_params == NULL || dl_chan_params == NULL || |
| 1995 | dl_out_params == NULL || |
| 1996 | (connect_params->teth_prot != IPA_USB_DIAG && |
| 1997 | (ul_chan_params == NULL || ul_out_params == NULL))) { |
| 1998 | IPA_USB_ERR("bad parameters.\n"); |
| 1999 | result = -EINVAL; |
| 2000 | goto bad_params; |
| 2001 | } |
| 2002 | |
| 2003 | if (connect_params->teth_prot != IPA_USB_DIAG) { |
| 2004 | result = ipa3_usb_request_xdci_channel(ul_chan_params, |
| 2005 | ul_out_params); |
| 2006 | if (result) { |
| 2007 | IPA_USB_ERR("failed to allocate UL channel.\n"); |
| 2008 | goto bad_params; |
| 2009 | } |
| 2010 | } |
| 2011 | |
| 2012 | result = ipa3_usb_request_xdci_channel(dl_chan_params, dl_out_params); |
| 2013 | if (result) { |
| 2014 | IPA_USB_ERR("failed to allocate DL/DPL channel.\n"); |
| 2015 | goto alloc_dl_chan_fail; |
| 2016 | } |
| 2017 | |
| 2018 | memset(&conn_params, 0, |
| 2019 | sizeof(struct ipa_usb_xdci_connect_params_internal)); |
| 2020 | conn_params.max_pkt_size = connect_params->max_pkt_size; |
| 2021 | conn_params.ipa_to_usb_clnt_hdl = dl_out_params->clnt_hdl; |
| 2022 | conn_params.ipa_to_usb_xferrscidx = |
| 2023 | connect_params->ipa_to_usb_xferrscidx; |
| 2024 | conn_params.ipa_to_usb_xferrscidx_valid = |
| 2025 | connect_params->ipa_to_usb_xferrscidx_valid; |
| 2026 | if (connect_params->teth_prot != IPA_USB_DIAG) { |
| 2027 | conn_params.usb_to_ipa_clnt_hdl = ul_out_params->clnt_hdl; |
| 2028 | conn_params.usb_to_ipa_xferrscidx = |
| 2029 | connect_params->usb_to_ipa_xferrscidx; |
| 2030 | conn_params.usb_to_ipa_xferrscidx_valid = |
| 2031 | connect_params->usb_to_ipa_xferrscidx_valid; |
| 2032 | } |
| 2033 | conn_params.teth_prot = connect_params->teth_prot; |
| 2034 | conn_params.teth_prot_params = connect_params->teth_prot_params; |
| 2035 | conn_params.max_supported_bandwidth_mbps = |
| 2036 | connect_params->max_supported_bandwidth_mbps; |
| 2037 | result = ipa3_usb_xdci_connect_internal(&conn_params); |
| 2038 | if (result) { |
| 2039 | IPA_USB_ERR("failed to connect.\n"); |
| 2040 | goto connect_fail; |
| 2041 | } |
| 2042 | |
| 2043 | IPA_USB_DBG_LOW("exit\n"); |
| 2044 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 2045 | return 0; |
| 2046 | |
| 2047 | connect_fail: |
| 2048 | ipa3_usb_release_xdci_channel(dl_out_params->clnt_hdl, |
Gidon Studinski | 3021a6f | 2016-11-10 12:48:48 +0200 | [diff] [blame] | 2049 | IPA3_USB_GET_TTYPE(dl_chan_params->teth_prot)); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2050 | alloc_dl_chan_fail: |
| 2051 | if (connect_params->teth_prot != IPA_USB_DIAG) |
| 2052 | ipa3_usb_release_xdci_channel(ul_out_params->clnt_hdl, |
Gidon Studinski | 3021a6f | 2016-11-10 12:48:48 +0200 | [diff] [blame] | 2053 | IPA3_USB_GET_TTYPE(ul_chan_params->teth_prot)); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2054 | bad_params: |
| 2055 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 2056 | return result; |
| 2057 | } |
| 2058 | EXPORT_SYMBOL(ipa_usb_xdci_connect); |
| 2059 | |
| 2060 | static int ipa3_usb_check_disconnect_prot(enum ipa_usb_teth_prot teth_prot) |
| 2061 | { |
| 2062 | if (teth_prot > IPA_USB_MAX_TETH_PROT_SIZE) { |
| 2063 | IPA_USB_ERR("bad parameter.\n"); |
| 2064 | return -EFAULT; |
| 2065 | } |
| 2066 | |
| 2067 | if (ipa3_usb_ctx->teth_prot_ctx[teth_prot].state != |
| 2068 | IPA_USB_TETH_PROT_CONNECTED) { |
| 2069 | IPA_USB_ERR("%s is not connected.\n", |
| 2070 | ipa3_usb_teth_prot_to_string(teth_prot)); |
| 2071 | return -EFAULT; |
| 2072 | } |
| 2073 | |
| 2074 | return 0; |
| 2075 | } |
| 2076 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 2077 | /* Assumes lock already acquired */ |
| 2078 | static int ipa_usb_xdci_dismiss_channels(u32 ul_clnt_hdl, u32 dl_clnt_hdl, |
| 2079 | enum ipa_usb_teth_prot teth_prot) |
| 2080 | { |
| 2081 | int result = 0; |
| 2082 | enum ipa3_usb_transport_type ttype; |
| 2083 | |
| 2084 | ttype = IPA3_USB_GET_TTYPE(teth_prot); |
| 2085 | |
| 2086 | IPA_USB_DBG_LOW("entry\n"); |
| 2087 | |
| 2088 | /* Reset DL channel */ |
| 2089 | result = ipa3_reset_gsi_channel(dl_clnt_hdl); |
| 2090 | if (result) { |
| 2091 | IPA_USB_ERR("failed to reset DL channel.\n"); |
| 2092 | return result; |
| 2093 | } |
| 2094 | |
| 2095 | /* Reset DL event ring */ |
| 2096 | result = ipa3_reset_gsi_event_ring(dl_clnt_hdl); |
| 2097 | if (result) { |
| 2098 | IPA_USB_ERR("failed to reset DL event ring.\n"); |
| 2099 | return result; |
| 2100 | } |
| 2101 | |
| 2102 | if (!IPA3_USB_IS_TTYPE_DPL(ttype)) { |
| 2103 | /* Reset UL channel */ |
| 2104 | result = ipa3_reset_gsi_channel(ul_clnt_hdl); |
| 2105 | if (result) { |
| 2106 | IPA_USB_ERR("failed to reset UL channel.\n"); |
| 2107 | return result; |
| 2108 | } |
| 2109 | |
| 2110 | /* Reset UL event ring */ |
| 2111 | result = ipa3_reset_gsi_event_ring(ul_clnt_hdl); |
| 2112 | if (result) { |
| 2113 | IPA_USB_ERR("failed to reset UL event ring.\n"); |
| 2114 | return result; |
| 2115 | } |
| 2116 | } |
| 2117 | |
| 2118 | /* Change state to STOPPED */ |
| 2119 | if (!ipa3_usb_set_state(IPA_USB_STOPPED, false, ttype)) |
| 2120 | IPA_USB_ERR("failed to change state to stopped\n"); |
| 2121 | |
| 2122 | if (!IPA3_USB_IS_TTYPE_DPL(ttype)) { |
| 2123 | result = ipa3_usb_release_xdci_channel(ul_clnt_hdl, ttype); |
| 2124 | if (result) { |
| 2125 | IPA_USB_ERR("failed to release UL channel.\n"); |
| 2126 | return result; |
| 2127 | } |
| 2128 | } |
| 2129 | |
| 2130 | result = ipa3_usb_release_xdci_channel(dl_clnt_hdl, ttype); |
| 2131 | if (result) { |
| 2132 | IPA_USB_ERR("failed to release DL channel.\n"); |
| 2133 | return result; |
| 2134 | } |
| 2135 | |
| 2136 | IPA_USB_DBG_LOW("exit\n"); |
| 2137 | |
| 2138 | return 0; |
| 2139 | } |
| 2140 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2141 | int ipa_usb_xdci_disconnect(u32 ul_clnt_hdl, u32 dl_clnt_hdl, |
| 2142 | enum ipa_usb_teth_prot teth_prot) |
| 2143 | { |
| 2144 | int result = 0; |
| 2145 | struct ipa_ep_cfg_holb holb_cfg; |
| 2146 | unsigned long flags; |
| 2147 | enum ipa3_usb_state orig_state; |
| 2148 | enum ipa3_usb_transport_type ttype; |
| 2149 | |
| 2150 | mutex_lock(&ipa3_usb_ctx->general_mutex); |
| 2151 | IPA_USB_DBG_LOW("entry\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2152 | |
| 2153 | ttype = IPA3_USB_GET_TTYPE(teth_prot); |
| 2154 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 2155 | if (!ipa3_usb_check_legal_op(IPA_USB_OP_DISCONNECT, ttype)) { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2156 | IPA_USB_ERR("Illegal operation.\n"); |
| 2157 | result = -EPERM; |
| 2158 | goto bad_params; |
| 2159 | } |
| 2160 | |
| 2161 | spin_lock_irqsave(&ipa3_usb_ctx->state_lock, flags); |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 2162 | if (ipa3_usb_ctx->ttype_ctx[ttype].state == |
| 2163 | IPA_USB_SUSPENDED_NO_RWAKEUP) { |
| 2164 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, flags); |
| 2165 | result = ipa_usb_xdci_dismiss_channels(ul_clnt_hdl, dl_clnt_hdl, |
| 2166 | teth_prot); |
| 2167 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 2168 | return result; |
| 2169 | } |
| 2170 | |
| 2171 | if (ipa3_usb_check_disconnect_prot(teth_prot)) { |
| 2172 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, flags); |
| 2173 | result = -EINVAL; |
| 2174 | goto bad_params; |
| 2175 | } |
| 2176 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2177 | if (ipa3_usb_ctx->ttype_ctx[ttype].state != IPA_USB_SUSPENDED) { |
| 2178 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, flags); |
| 2179 | /* Stop DL/DPL channel */ |
| 2180 | result = ipa3_xdci_disconnect(dl_clnt_hdl, false, -1); |
| 2181 | if (result) { |
| 2182 | IPA_USB_ERR("failed to disconnect DL/DPL channel.\n"); |
| 2183 | goto bad_params; |
| 2184 | } |
| 2185 | } else { |
| 2186 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, flags); |
| 2187 | memset(&holb_cfg, 0, sizeof(holb_cfg)); |
| 2188 | holb_cfg.en = IPA_HOLB_TMR_EN; |
| 2189 | holb_cfg.tmr_val = 0; |
| 2190 | ipa3_cfg_ep_holb(dl_clnt_hdl, &holb_cfg); |
| 2191 | } |
| 2192 | |
| 2193 | spin_lock_irqsave(&ipa3_usb_ctx->state_lock, flags); |
| 2194 | orig_state = ipa3_usb_ctx->ttype_ctx[ttype].state; |
| 2195 | if (!IPA3_USB_IS_TTYPE_DPL(ttype)) { |
Skylar Chang | df5f234 | 2017-06-05 09:27:48 -0700 | [diff] [blame] | 2196 | if (orig_state != IPA_USB_SUSPENDED) { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2197 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, |
| 2198 | flags); |
| 2199 | /* Stop UL channel */ |
| 2200 | result = ipa3_xdci_disconnect(ul_clnt_hdl, |
| 2201 | true, |
| 2202 | ipa3_usb_ctx->qmi_req_id); |
| 2203 | if (result) { |
| 2204 | IPA_USB_ERR("failed disconnect UL channel\n"); |
| 2205 | goto bad_params; |
| 2206 | } |
| 2207 | ipa3_usb_ctx->qmi_req_id++; |
| 2208 | } else |
| 2209 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, |
| 2210 | flags); |
| 2211 | } else |
| 2212 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, flags); |
| 2213 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 2214 | result = ipa_usb_xdci_dismiss_channels(ul_clnt_hdl, dl_clnt_hdl, |
| 2215 | teth_prot); |
| 2216 | if (result) |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2217 | goto bad_params; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2218 | |
| 2219 | /* Disconnect tethering protocol */ |
| 2220 | result = ipa3_usb_disconnect_teth_prot(teth_prot); |
| 2221 | if (result) |
| 2222 | goto bad_params; |
| 2223 | |
Skylar Chang | df5f234 | 2017-06-05 09:27:48 -0700 | [diff] [blame] | 2224 | if (orig_state != IPA_USB_SUSPENDED) { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2225 | result = ipa3_usb_release_prod(ttype); |
| 2226 | if (result) { |
| 2227 | IPA_USB_ERR("failed to release PROD.\n"); |
| 2228 | goto bad_params; |
| 2229 | } |
| 2230 | } |
| 2231 | |
| 2232 | IPA_USB_DBG_LOW("exit\n"); |
| 2233 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 2234 | return 0; |
| 2235 | |
| 2236 | bad_params: |
| 2237 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 2238 | return result; |
| 2239 | |
| 2240 | } |
| 2241 | EXPORT_SYMBOL(ipa_usb_xdci_disconnect); |
| 2242 | |
| 2243 | int ipa_usb_deinit_teth_prot(enum ipa_usb_teth_prot teth_prot) |
| 2244 | { |
| 2245 | int result = -EFAULT; |
| 2246 | enum ipa3_usb_transport_type ttype; |
| 2247 | |
| 2248 | mutex_lock(&ipa3_usb_ctx->general_mutex); |
| 2249 | IPA_USB_DBG_LOW("entry\n"); |
| 2250 | if (teth_prot > IPA_USB_MAX_TETH_PROT_SIZE) { |
| 2251 | IPA_USB_ERR("bad parameters.\n"); |
| 2252 | result = -EINVAL; |
| 2253 | goto bad_params; |
| 2254 | } |
| 2255 | |
| 2256 | ttype = IPA3_USB_GET_TTYPE(teth_prot); |
| 2257 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 2258 | if (!ipa3_usb_check_legal_op(IPA_USB_OP_DEINIT_TETH_PROT, ttype)) { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2259 | IPA_USB_ERR("Illegal operation.\n"); |
| 2260 | result = -EPERM; |
| 2261 | goto bad_params; |
| 2262 | } |
| 2263 | |
| 2264 | /* Clean-up tethering protocol */ |
| 2265 | switch (teth_prot) { |
| 2266 | case IPA_USB_RNDIS: |
| 2267 | case IPA_USB_ECM: |
| 2268 | if (ipa3_usb_ctx->teth_prot_ctx[teth_prot].state != |
| 2269 | IPA_USB_TETH_PROT_INITIALIZED) { |
| 2270 | IPA_USB_ERR("%s is not initialized\n", |
| 2271 | ipa3_usb_teth_prot_to_string(teth_prot)); |
| 2272 | result = -EINVAL; |
| 2273 | goto bad_params; |
| 2274 | } |
| 2275 | if (teth_prot == IPA_USB_RNDIS) |
| 2276 | rndis_ipa_cleanup( |
| 2277 | ipa3_usb_ctx->teth_prot_ctx[teth_prot]. |
| 2278 | teth_prot_params.rndis.private); |
| 2279 | else |
| 2280 | ecm_ipa_cleanup( |
| 2281 | ipa3_usb_ctx->teth_prot_ctx[teth_prot]. |
| 2282 | teth_prot_params.ecm.private); |
| 2283 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].user_data = NULL; |
| 2284 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].state = |
| 2285 | IPA_USB_TETH_PROT_INVALID; |
| 2286 | ipa3_usb_ctx->num_init_prot--; |
| 2287 | IPA_USB_DBG("deinitialized %s\n", |
| 2288 | ipa3_usb_teth_prot_to_string(teth_prot)); |
| 2289 | break; |
| 2290 | case IPA_USB_RMNET: |
| 2291 | case IPA_USB_MBIM: |
| 2292 | if (ipa3_usb_ctx->teth_prot_ctx[teth_prot].state != |
| 2293 | IPA_USB_TETH_PROT_INITIALIZED) { |
| 2294 | IPA_USB_ERR("%s (%s) is not initialized\n", |
| 2295 | ipa3_usb_teth_prot_to_string(teth_prot), |
| 2296 | ipa3_usb_teth_bridge_prot_to_string(teth_prot)); |
| 2297 | result = -EINVAL; |
| 2298 | goto bad_params; |
| 2299 | } |
| 2300 | |
| 2301 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].user_data = |
| 2302 | NULL; |
| 2303 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].state = |
| 2304 | IPA_USB_TETH_PROT_INVALID; |
| 2305 | ipa3_usb_ctx->num_init_prot--; |
| 2306 | IPA_USB_DBG("deinitialized %s (%s)\n", |
| 2307 | ipa3_usb_teth_prot_to_string(teth_prot), |
| 2308 | ipa3_usb_teth_bridge_prot_to_string(teth_prot)); |
| 2309 | break; |
| 2310 | case IPA_USB_DIAG: |
| 2311 | if (ipa3_usb_ctx->teth_prot_ctx[teth_prot].state != |
| 2312 | IPA_USB_TETH_PROT_INITIALIZED) { |
| 2313 | IPA_USB_ERR("%s is not initialized\n", |
| 2314 | ipa3_usb_teth_prot_to_string(teth_prot)); |
| 2315 | result = -EINVAL; |
| 2316 | goto bad_params; |
| 2317 | } |
| 2318 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].user_data = |
| 2319 | NULL; |
| 2320 | ipa3_usb_ctx->teth_prot_ctx[teth_prot].state = |
| 2321 | IPA_USB_TETH_PROT_INVALID; |
| 2322 | IPA_USB_DBG("deinitialized %s\n", |
| 2323 | ipa3_usb_teth_prot_to_string(teth_prot)); |
| 2324 | break; |
| 2325 | default: |
| 2326 | IPA_USB_ERR("unexpected tethering protocol\n"); |
| 2327 | result = -EINVAL; |
| 2328 | goto bad_params; |
| 2329 | } |
| 2330 | |
| 2331 | if (IPA3_USB_IS_TTYPE_DPL(ttype) || |
| 2332 | (ipa3_usb_ctx->num_init_prot == 0)) { |
| 2333 | if (!ipa3_usb_set_state(IPA_USB_INVALID, false, ttype)) |
| 2334 | IPA_USB_ERR("failed to change state to invalid\n"); |
| 2335 | ipa_rm_delete_resource( |
| 2336 | ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx.prod_params.name); |
| 2337 | ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx.prod_valid = false; |
| 2338 | ipa_rm_delete_resource( |
| 2339 | ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx.cons_params.name); |
| 2340 | ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx.cons_valid = false; |
| 2341 | ipa3_usb_ctx->ttype_ctx[ttype].ipa_usb_notify_cb = NULL; |
| 2342 | } |
| 2343 | |
| 2344 | IPA_USB_DBG_LOW("exit\n"); |
| 2345 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 2346 | return 0; |
| 2347 | |
| 2348 | bad_params: |
| 2349 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 2350 | return result; |
| 2351 | } |
| 2352 | EXPORT_SYMBOL(ipa_usb_deinit_teth_prot); |
| 2353 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 2354 | /* Assumes lock already acquired */ |
| 2355 | static int ipa3_usb_suspend_no_remote_wakeup(u32 ul_clnt_hdl, u32 dl_clnt_hdl, |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2356 | enum ipa_usb_teth_prot teth_prot) |
| 2357 | { |
| 2358 | int result = 0; |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 2359 | enum ipa3_usb_transport_type ttype; |
| 2360 | |
| 2361 | ttype = IPA3_USB_GET_TTYPE(teth_prot); |
| 2362 | |
| 2363 | if (!ipa3_usb_check_legal_op(IPA_USB_OP_SUSPEND_NO_RWAKEUP, ttype)) { |
| 2364 | IPA_USB_ERR("Illegal operation.\n"); |
| 2365 | result = -EPERM; |
| 2366 | goto fail_exit; |
| 2367 | } |
| 2368 | |
| 2369 | IPA_USB_DBG("Start suspend with no remote wakeup sequence: %s\n", |
| 2370 | IPA3_USB_IS_TTYPE_DPL(ttype) ? |
| 2371 | "DPL channel":"Data Tethering channels"); |
| 2372 | |
| 2373 | if (ipa3_usb_check_disconnect_prot(teth_prot)) { |
| 2374 | result = -EINVAL; |
| 2375 | goto fail_exit; |
| 2376 | } |
| 2377 | |
| 2378 | /* Stop DL/DPL channel */ |
| 2379 | result = ipa3_xdci_disconnect(dl_clnt_hdl, false, -1); |
| 2380 | if (result) { |
| 2381 | IPA_USB_ERR("failed to disconnect DL/DPL channel.\n"); |
| 2382 | goto fail_exit; |
| 2383 | } |
| 2384 | |
| 2385 | if (!IPA3_USB_IS_TTYPE_DPL(ttype)) { |
| 2386 | /* Stop UL channel */ |
| 2387 | result = ipa3_xdci_disconnect(ul_clnt_hdl, true, |
| 2388 | ipa3_usb_ctx->qmi_req_id); |
| 2389 | if (result) { |
| 2390 | IPA_USB_ERR("failed disconnect UL channel\n"); |
| 2391 | goto start_dl; |
| 2392 | } |
| 2393 | ipa3_usb_ctx->qmi_req_id++; |
| 2394 | } |
| 2395 | |
| 2396 | /* Disconnect tethering protocol */ |
| 2397 | result = ipa3_usb_disconnect_teth_prot(teth_prot); |
| 2398 | if (result) |
| 2399 | goto start_ul; |
| 2400 | |
| 2401 | result = ipa3_usb_release_prod(ttype); |
| 2402 | if (result) { |
| 2403 | IPA_USB_ERR("failed to release PROD.\n"); |
| 2404 | goto connect_teth; |
| 2405 | } |
| 2406 | |
| 2407 | /* Change ipa_usb state to SUSPENDED_NO_RWAKEUP */ |
| 2408 | if (!ipa3_usb_set_state(IPA_USB_SUSPENDED_NO_RWAKEUP, false, ttype)) |
| 2409 | IPA_USB_ERR("failed to change state to suspend no rwakeup\n"); |
| 2410 | |
| 2411 | IPA_USB_DBG_LOW("exit\n"); |
| 2412 | return 0; |
| 2413 | |
| 2414 | connect_teth: |
| 2415 | (void)ipa3_usb_connect_teth_prot(teth_prot); |
| 2416 | start_ul: |
| 2417 | if (!IPA3_USB_IS_TTYPE_DPL(ttype)) |
| 2418 | (void)ipa3_xdci_connect(ul_clnt_hdl); |
| 2419 | start_dl: |
| 2420 | (void)ipa3_xdci_connect(dl_clnt_hdl); |
| 2421 | fail_exit: |
| 2422 | return result; |
| 2423 | } |
| 2424 | |
| 2425 | int ipa_usb_xdci_suspend(u32 ul_clnt_hdl, u32 dl_clnt_hdl, |
| 2426 | enum ipa_usb_teth_prot teth_prot, bool with_remote_wakeup) |
| 2427 | { |
| 2428 | int result = 0; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2429 | unsigned long flags; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2430 | enum ipa3_usb_transport_type ttype; |
| 2431 | |
| 2432 | mutex_lock(&ipa3_usb_ctx->general_mutex); |
| 2433 | IPA_USB_DBG_LOW("entry\n"); |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 2434 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2435 | if (teth_prot > IPA_USB_MAX_TETH_PROT_SIZE) { |
| 2436 | IPA_USB_ERR("bad parameters.\n"); |
| 2437 | result = -EINVAL; |
| 2438 | goto bad_params; |
| 2439 | } |
| 2440 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 2441 | if (!with_remote_wakeup) { |
| 2442 | result = ipa3_usb_suspend_no_remote_wakeup(ul_clnt_hdl, |
| 2443 | dl_clnt_hdl, teth_prot); |
| 2444 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 2445 | return result; |
| 2446 | } |
| 2447 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2448 | ttype = IPA3_USB_GET_TTYPE(teth_prot); |
| 2449 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 2450 | if (!ipa3_usb_check_legal_op(IPA_USB_OP_SUSPEND, ttype)) { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2451 | IPA_USB_ERR("Illegal operation.\n"); |
| 2452 | result = -EPERM; |
| 2453 | goto bad_params; |
| 2454 | } |
| 2455 | |
| 2456 | IPA_USB_DBG("Start suspend sequence: %s\n", |
| 2457 | IPA3_USB_IS_TTYPE_DPL(ttype) ? |
| 2458 | "DPL channel":"Data Tethering channels"); |
| 2459 | |
| 2460 | /* Change state to SUSPEND_REQUESTED */ |
| 2461 | if (!ipa3_usb_set_state(IPA_USB_SUSPEND_REQUESTED, false, ttype)) { |
| 2462 | IPA_USB_ERR( |
| 2463 | "fail changing state to suspend_req.\n"); |
| 2464 | result = -EFAULT; |
| 2465 | goto bad_params; |
| 2466 | } |
| 2467 | |
| 2468 | /* Stop UL channel & suspend DL/DPL EP */ |
| 2469 | result = ipa3_xdci_suspend(ul_clnt_hdl, dl_clnt_hdl, |
| 2470 | true, |
| 2471 | ipa3_usb_ctx->qmi_req_id, IPA3_USB_IS_TTYPE_DPL(ttype)); |
| 2472 | if (result) { |
| 2473 | IPA_USB_ERR("failed to suspend\n"); |
| 2474 | goto suspend_fail; |
| 2475 | } |
| 2476 | ipa3_usb_ctx->qmi_req_id++; |
| 2477 | |
| 2478 | result = ipa3_usb_release_prod(ttype); |
| 2479 | if (result) { |
| 2480 | IPA_USB_ERR("failed to release PROD\n"); |
| 2481 | goto release_prod_fail; |
| 2482 | } |
| 2483 | |
Skylar Chang | df5f234 | 2017-06-05 09:27:48 -0700 | [diff] [blame] | 2484 | /* Check if DL/DPL data pending */ |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2485 | spin_lock_irqsave(&ipa3_usb_ctx->state_lock, flags); |
Skylar Chang | df5f234 | 2017-06-05 09:27:48 -0700 | [diff] [blame] | 2486 | if (ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx.cons_state == |
| 2487 | IPA_USB_CONS_GRANTED && |
| 2488 | ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx.cons_requested) { |
| 2489 | |
| 2490 | IPA_USB_DBG("DL/DPL data pending, invoke remote wakeup\n"); |
| 2491 | queue_work(ipa3_usb_ctx->wq, |
| 2492 | IPA3_USB_IS_TTYPE_DPL(ttype) ? |
| 2493 | &ipa3_usb_dpl_notify_remote_wakeup_work : |
| 2494 | &ipa3_usb_notify_remote_wakeup_work); |
| 2495 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2496 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, flags); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2497 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2498 | /* Change state to SUSPENDED */ |
| 2499 | if (!ipa3_usb_set_state(IPA_USB_SUSPENDED, false, ttype)) |
| 2500 | IPA_USB_ERR("failed to change state to suspended\n"); |
| 2501 | |
| 2502 | /* Check if DL/DPL data pending */ |
| 2503 | spin_lock_irqsave(&ipa3_usb_ctx->state_lock, flags); |
| 2504 | if (ipa3_usb_ctx->ttype_ctx[ttype].rm_ctx.cons_requested) { |
| 2505 | IPA_USB_DBG_LOW( |
| 2506 | "DL/DPL data is pending, invoking remote wakeup\n"); |
| 2507 | queue_work(ipa3_usb_ctx->wq, IPA3_USB_IS_TTYPE_DPL(ttype) ? |
| 2508 | &ipa3_usb_dpl_notify_remote_wakeup_work : |
| 2509 | &ipa3_usb_notify_remote_wakeup_work); |
| 2510 | } |
| 2511 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, flags); |
| 2512 | |
| 2513 | IPA_USB_DBG_LOW("exit\n"); |
| 2514 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 2515 | return 0; |
| 2516 | |
| 2517 | release_prod_fail: |
| 2518 | ipa3_xdci_resume(ul_clnt_hdl, dl_clnt_hdl, |
| 2519 | IPA3_USB_IS_TTYPE_DPL(ttype)); |
| 2520 | suspend_fail: |
| 2521 | /* Change state back to CONNECTED */ |
| 2522 | if (!ipa3_usb_set_state(IPA_USB_CONNECTED, true, ttype)) |
| 2523 | IPA_USB_ERR("failed to change state back to connected\n"); |
| 2524 | bad_params: |
| 2525 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 2526 | return result; |
| 2527 | } |
| 2528 | EXPORT_SYMBOL(ipa_usb_xdci_suspend); |
| 2529 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 2530 | /* Assumes lock already acquired */ |
| 2531 | static int ipa3_usb_resume_no_remote_wakeup(u32 ul_clnt_hdl, u32 dl_clnt_hdl, |
| 2532 | enum ipa_usb_teth_prot teth_prot) |
| 2533 | { |
| 2534 | int result = -EFAULT; |
| 2535 | enum ipa3_usb_transport_type ttype; |
| 2536 | |
| 2537 | ttype = IPA3_USB_GET_TTYPE(teth_prot); |
| 2538 | |
| 2539 | IPA_USB_DBG("Start resume with no remote wakeup sequence: %s\n", |
| 2540 | IPA3_USB_IS_TTYPE_DPL(ttype) ? |
| 2541 | "DPL channel":"Data Tethering channels"); |
| 2542 | |
| 2543 | /* Request USB_PROD */ |
| 2544 | result = ipa3_usb_request_prod(ttype); |
| 2545 | if (result) |
| 2546 | goto fail_exit; |
| 2547 | |
| 2548 | /* Connect tethering protocol */ |
| 2549 | result = ipa3_usb_connect_teth_prot(teth_prot); |
| 2550 | if (result) { |
| 2551 | IPA_USB_ERR("failed to connect teth protocol\n"); |
| 2552 | goto release_prod; |
| 2553 | } |
| 2554 | |
| 2555 | if (!IPA3_USB_IS_TTYPE_DPL(ttype)) { |
| 2556 | /* Start UL channel */ |
| 2557 | result = ipa3_xdci_connect(ul_clnt_hdl); |
| 2558 | if (result) { |
| 2559 | IPA_USB_ERR("failed to start UL channel.\n"); |
| 2560 | goto disconn_teth; |
| 2561 | } |
| 2562 | } |
| 2563 | |
| 2564 | /* Start DL/DPL channel */ |
| 2565 | result = ipa3_xdci_connect(dl_clnt_hdl); |
| 2566 | if (result) { |
| 2567 | IPA_USB_ERR("failed to start DL/DPL channel.\n"); |
| 2568 | goto stop_ul; |
| 2569 | } |
| 2570 | |
| 2571 | /* Change state to CONNECTED */ |
| 2572 | if (!ipa3_usb_set_state(IPA_USB_CONNECTED, false, ttype)) { |
| 2573 | IPA_USB_ERR("failed to change state to connected\n"); |
| 2574 | result = -EFAULT; |
| 2575 | goto stop_dl; |
| 2576 | } |
| 2577 | |
| 2578 | return 0; |
| 2579 | |
| 2580 | stop_dl: |
| 2581 | (void)ipa3_xdci_disconnect(dl_clnt_hdl, false, -1); |
| 2582 | stop_ul: |
| 2583 | if (!IPA3_USB_IS_TTYPE_DPL(ttype)) { |
| 2584 | (void)ipa3_xdci_disconnect(ul_clnt_hdl, true, |
| 2585 | ipa3_usb_ctx->qmi_req_id); |
| 2586 | ipa3_usb_ctx->qmi_req_id++; |
| 2587 | } |
| 2588 | disconn_teth: |
| 2589 | (void)ipa3_usb_disconnect_teth_prot(teth_prot); |
| 2590 | release_prod: |
| 2591 | (void)ipa3_usb_release_prod(ttype); |
| 2592 | fail_exit: |
| 2593 | return result; |
| 2594 | } |
| 2595 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2596 | int ipa_usb_xdci_resume(u32 ul_clnt_hdl, u32 dl_clnt_hdl, |
| 2597 | enum ipa_usb_teth_prot teth_prot) |
| 2598 | { |
| 2599 | int result = -EFAULT; |
| 2600 | enum ipa3_usb_state prev_state; |
| 2601 | unsigned long flags; |
| 2602 | enum ipa3_usb_transport_type ttype; |
| 2603 | |
| 2604 | mutex_lock(&ipa3_usb_ctx->general_mutex); |
| 2605 | IPA_USB_DBG_LOW("entry\n"); |
| 2606 | |
| 2607 | if (teth_prot > IPA_USB_MAX_TETH_PROT_SIZE) { |
| 2608 | IPA_USB_ERR("bad parameters.\n"); |
| 2609 | result = -EINVAL; |
| 2610 | goto bad_params; |
| 2611 | } |
| 2612 | |
| 2613 | ttype = IPA3_USB_GET_TTYPE(teth_prot); |
| 2614 | |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 2615 | if (!ipa3_usb_check_legal_op(IPA_USB_OP_RESUME, ttype)) { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2616 | IPA_USB_ERR("Illegal operation.\n"); |
| 2617 | result = -EPERM; |
| 2618 | goto bad_params; |
| 2619 | } |
| 2620 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2621 | spin_lock_irqsave(&ipa3_usb_ctx->state_lock, flags); |
| 2622 | prev_state = ipa3_usb_ctx->ttype_ctx[ttype].state; |
| 2623 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, flags); |
Ghanim Fodi | 93a6111 | 2016-10-05 11:59:18 +0300 | [diff] [blame] | 2624 | if (prev_state == IPA_USB_SUSPENDED_NO_RWAKEUP) { |
| 2625 | result = ipa3_usb_resume_no_remote_wakeup(ul_clnt_hdl, |
| 2626 | dl_clnt_hdl, teth_prot); |
| 2627 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 2628 | return result; |
| 2629 | } |
| 2630 | |
| 2631 | IPA_USB_DBG("Start resume sequence: %s\n", |
| 2632 | IPA3_USB_IS_TTYPE_DPL(ttype) ? |
| 2633 | "DPL channel" : "Data Tethering channels"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2634 | |
| 2635 | /* Change state to RESUME_IN_PROGRESS */ |
| 2636 | if (!ipa3_usb_set_state(IPA_USB_RESUME_IN_PROGRESS, false, ttype)) { |
| 2637 | IPA_USB_ERR("failed to change state to resume_in_progress\n"); |
| 2638 | result = -EFAULT; |
| 2639 | goto bad_params; |
| 2640 | } |
| 2641 | |
| 2642 | /* Request USB_PROD */ |
| 2643 | result = ipa3_usb_request_prod(ttype); |
| 2644 | if (result) |
| 2645 | goto prod_req_fail; |
| 2646 | |
| 2647 | if (!IPA3_USB_IS_TTYPE_DPL(ttype)) { |
| 2648 | /* Start UL channel */ |
| 2649 | result = ipa3_start_gsi_channel(ul_clnt_hdl); |
| 2650 | if (result) { |
| 2651 | IPA_USB_ERR("failed to start UL channel.\n"); |
| 2652 | goto start_ul_fail; |
| 2653 | } |
| 2654 | } |
| 2655 | |
Skylar Chang | df5f234 | 2017-06-05 09:27:48 -0700 | [diff] [blame] | 2656 | /* Start DL/DPL channel */ |
| 2657 | result = ipa3_start_gsi_channel(dl_clnt_hdl); |
| 2658 | if (result) { |
| 2659 | IPA_USB_ERR("failed to start DL/DPL channel.\n"); |
| 2660 | goto start_dl_fail; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2661 | } |
| 2662 | |
| 2663 | /* Change state to CONNECTED */ |
| 2664 | if (!ipa3_usb_set_state(IPA_USB_CONNECTED, false, ttype)) { |
| 2665 | IPA_USB_ERR("failed to change state to connected\n"); |
| 2666 | result = -EFAULT; |
| 2667 | goto state_change_connected_fail; |
| 2668 | } |
| 2669 | |
| 2670 | IPA_USB_DBG_LOW("exit\n"); |
| 2671 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 2672 | return 0; |
| 2673 | |
| 2674 | state_change_connected_fail: |
Skylar Chang | df5f234 | 2017-06-05 09:27:48 -0700 | [diff] [blame] | 2675 | result = ipa3_stop_gsi_channel(dl_clnt_hdl); |
| 2676 | if (result) |
| 2677 | IPA_USB_ERR("Error stopping DL/DPL channel: %d\n", |
| 2678 | result); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2679 | start_dl_fail: |
| 2680 | if (!IPA3_USB_IS_TTYPE_DPL(ttype)) { |
| 2681 | result = ipa3_stop_gsi_channel(ul_clnt_hdl); |
| 2682 | if (result) |
| 2683 | IPA_USB_ERR("Error stopping UL channel: %d\n", result); |
| 2684 | } |
| 2685 | start_ul_fail: |
| 2686 | ipa3_usb_release_prod(ttype); |
| 2687 | prod_req_fail: |
| 2688 | /* Change state back to prev_state */ |
| 2689 | if (!ipa3_usb_set_state(prev_state, true, ttype)) |
| 2690 | IPA_USB_ERR("failed to change state back to %s\n", |
| 2691 | ipa3_usb_state_to_string(prev_state)); |
| 2692 | bad_params: |
| 2693 | mutex_unlock(&ipa3_usb_ctx->general_mutex); |
| 2694 | return result; |
| 2695 | } |
| 2696 | EXPORT_SYMBOL(ipa_usb_xdci_resume); |
| 2697 | |
| 2698 | static int __init ipa3_usb_init(void) |
| 2699 | { |
| 2700 | int i; |
| 2701 | unsigned long flags; |
| 2702 | int res; |
| 2703 | |
Gidon Studinski | 3021a6f | 2016-11-10 12:48:48 +0200 | [diff] [blame] | 2704 | pr_debug("entry\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2705 | ipa3_usb_ctx = kzalloc(sizeof(struct ipa3_usb_context), GFP_KERNEL); |
| 2706 | if (ipa3_usb_ctx == NULL) { |
Gidon Studinski | 3021a6f | 2016-11-10 12:48:48 +0200 | [diff] [blame] | 2707 | pr_err("failed to allocate memory\n"); |
| 2708 | pr_err(":ipa_usb init failed\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2709 | return -EFAULT; |
| 2710 | } |
| 2711 | memset(ipa3_usb_ctx, 0, sizeof(struct ipa3_usb_context)); |
| 2712 | |
| 2713 | for (i = 0; i < IPA_USB_MAX_TETH_PROT_SIZE; i++) |
| 2714 | ipa3_usb_ctx->teth_prot_ctx[i].state = |
| 2715 | IPA_USB_TETH_PROT_INVALID; |
| 2716 | ipa3_usb_ctx->num_init_prot = 0; |
| 2717 | init_completion(&ipa3_usb_ctx->dev_ready_comp); |
| 2718 | ipa3_usb_ctx->qmi_req_id = 0; |
| 2719 | spin_lock_init(&ipa3_usb_ctx->state_lock); |
| 2720 | ipa3_usb_ctx->dl_data_pending = false; |
| 2721 | mutex_init(&ipa3_usb_ctx->general_mutex); |
| 2722 | |
| 2723 | for (i = 0; i < IPA_USB_TRANSPORT_MAX; i++) { |
| 2724 | ipa3_usb_ctx->ttype_ctx[i].rm_ctx.prod_valid = false; |
| 2725 | ipa3_usb_ctx->ttype_ctx[i].rm_ctx.cons_valid = false; |
| 2726 | init_completion(&ipa3_usb_ctx->ttype_ctx[i].rm_ctx.prod_comp); |
| 2727 | ipa3_usb_ctx->ttype_ctx[i].user_data = NULL; |
| 2728 | } |
| 2729 | |
| 2730 | spin_lock_irqsave(&ipa3_usb_ctx->state_lock, flags); |
| 2731 | for (i = 0; i < IPA_USB_TRANSPORT_MAX; i++) { |
| 2732 | ipa3_usb_ctx->ttype_ctx[i].state = IPA_USB_INVALID; |
| 2733 | ipa3_usb_ctx->ttype_ctx[i].rm_ctx.cons_state = |
| 2734 | IPA_USB_CONS_RELEASED; |
| 2735 | } |
| 2736 | spin_unlock_irqrestore(&ipa3_usb_ctx->state_lock, flags); |
| 2737 | |
| 2738 | ipa3_usb_ctx->wq = create_singlethread_workqueue("ipa_usb_wq"); |
| 2739 | if (!ipa3_usb_ctx->wq) { |
Gidon Studinski | 3021a6f | 2016-11-10 12:48:48 +0200 | [diff] [blame] | 2740 | pr_err("failed to create workqueue\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2741 | res = -EFAULT; |
| 2742 | goto ipa_usb_workqueue_fail; |
| 2743 | } |
| 2744 | |
| 2745 | ipa_usb_debugfs_init(); |
| 2746 | |
Gidon Studinski | 3021a6f | 2016-11-10 12:48:48 +0200 | [diff] [blame] | 2747 | pr_info("exit: IPA_USB init success!\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2748 | |
| 2749 | return 0; |
| 2750 | |
| 2751 | ipa_usb_workqueue_fail: |
Gidon Studinski | 3021a6f | 2016-11-10 12:48:48 +0200 | [diff] [blame] | 2752 | pr_err(":init failed (%d)\n", -res); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2753 | kfree(ipa3_usb_ctx); |
| 2754 | return res; |
| 2755 | } |
| 2756 | |
| 2757 | static void ipa3_usb_exit(void) |
| 2758 | { |
| 2759 | IPA_USB_DBG_LOW("IPA_USB exit\n"); |
| 2760 | ipa_usb_debugfs_remove(); |
| 2761 | kfree(ipa3_usb_ctx); |
| 2762 | } |
| 2763 | |
| 2764 | arch_initcall(ipa3_usb_init); |
| 2765 | module_exit(ipa3_usb_exit); |
| 2766 | |
| 2767 | MODULE_LICENSE("GPL v2"); |
| 2768 | MODULE_DESCRIPTION("IPA USB client driver"); |