Maria Yu | 4c12e92 | 2018-05-10 16:18:20 +0800 | [diff] [blame] | 1 | /* Copyright (c) 2013-2015, 2018, The Linux Foundation. All rights reserved. |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 2 | * |
| 3 | * Redistribution and use in source and binary forms, with or without |
| 4 | * modification, are permitted provided that the following conditions are |
| 5 | * met: |
| 6 | * * Redistributions of source code must retain the above copyright |
| 7 | * notice, this list of conditions and the following disclaimer. |
| 8 | * * Redistributions in binary form must reproduce the above |
| 9 | * copyright notice, this list of conditions and the following |
| 10 | * disclaimer in the documentation and/or other materials provided |
| 11 | * with the distribution. |
| 12 | * * Neither the name of The Linux Foundation nor the names of its |
| 13 | * contributors may be used to endorse or promote products derived |
| 14 | * from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| 20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 23 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 25 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| 26 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | /* This code implements the DesignWare Cores USB 3.0 driver. This file only |
| 30 | * implements the state machine and higher level logic as described in the |
| 31 | * SNPS DesignWare Cores SS USB3.0 Controller databook. |
| 32 | * Another file (dwc_hw.c) file implements the functions to interact with |
| 33 | * the dwc hardware registers directly. |
| 34 | */ |
| 35 | |
| 36 | #include <debug.h> |
| 37 | #include <reg.h> |
| 38 | #include <bits.h> |
| 39 | #include <string.h> |
| 40 | #include <malloc.h> |
| 41 | #include <stdlib.h> |
| 42 | #include <arch/defines.h> |
| 43 | #include <platform/timer.h> |
| 44 | #include <platform/interrupts.h> |
| 45 | #include <platform/irqs.h> |
| 46 | #include <kernel/event.h> |
| 47 | #include <usb30_dwc.h> |
| 48 | #include <usb30_dwc_hw.h> |
| 49 | #include <usb30_dwc_hwio.h> |
| 50 | |
| 51 | //#define DEBUG_USB |
| 52 | |
| 53 | #ifdef DEBUG_USB |
| 54 | #define DBG(...) dprintf(ALWAYS, __VA_ARGS__) |
| 55 | #else |
| 56 | #define DBG(...) |
| 57 | #endif |
| 58 | |
| 59 | #define ERR(...) dprintf(ALWAYS, __VA_ARGS__) |
| 60 | |
| 61 | /* debug only: enum string lookup for debug purpose */ |
| 62 | char* ss_link_state_lookup[20]; |
| 63 | char* hs_link_state_lookup[20]; |
| 64 | char* event_lookup_device[20]; |
| 65 | char* event_lookup_ep[20]; |
| 66 | char* dev_ctrl_state_lookup[20]; |
| 67 | char* ep_state_lookup[20]; |
| 68 | char* speed_lookup[20]; |
| 69 | char* cmd_lookup[20]; |
| 70 | |
| 71 | /* debug only: initialize the enum lookup */ |
| 72 | void dwc_debug_lookup_init(void) |
| 73 | { |
| 74 | /* EP event */ |
| 75 | event_lookup_ep[DWC_EVENT_EP_CMD_COMPLETE] = "DWC_EVENT_EP_CMD_COMPLETE "; |
| 76 | event_lookup_ep[DWC_EVENT_EP_XFER_NOT_READY] = "DWC_EVENT_EP_XFER_NOT_READY "; |
| 77 | event_lookup_ep[DWC_EVENT_EP_XFER_IN_PROGRESS] = "DWC_EVENT_EP_XFER_IN_PROGRESS"; |
| 78 | event_lookup_ep[DWC_EVENT_EP_XFER_COMPLETE] = "DWC_EVENT_EP_XFER_COMPLETE "; |
| 79 | |
| 80 | /* Device event */ |
| 81 | event_lookup_device[DWC_EVENT_DEVICE_EVENT_ID_VENDOR_DEVICE_TEST_LMP] = "DWC_EVENT_DEVICE_EVENT_ID_VENDOR_DEVICE_TEST_LMP"; |
| 82 | event_lookup_device[DWC_EVENT_DEVICE_EVENT_ID_BUFFER_OVERFLOW] = "DWC_EVENT_DEVICE_EVENT_ID_BUFFER_OVERFLOW "; |
| 83 | event_lookup_device[DWC_EVENT_DEVICE_EVENT_ID_GENERIC_CMD_COMPLETE] = "DWC_EVENT_DEVICE_EVENT_ID_GENERIC_CMD_COMPLETE "; |
| 84 | event_lookup_device[DWC_EVENT_DEVICE_EVENT_ID_ERRATIC_ERROR] = "DWC_EVENT_DEVICE_EVENT_ID_ERRATIC_ERROR "; |
| 85 | event_lookup_device[DWC_EVENT_DEVICE_EVENT_ID_SOF] = "DWC_EVENT_DEVICE_EVENT_ID_SOF "; |
| 86 | event_lookup_device[DWC_EVENT_DEVICE_EVENT_ID_SUSPEND_ENTRY] = "DWC_EVENT_DEVICE_EVENT_ID_SUSPEND_ENTRY "; |
| 87 | event_lookup_device[DWC_EVENT_DEVICE_EVENT_ID_HIBER] = "DWC_EVENT_DEVICE_EVENT_ID_HIBER "; |
| 88 | event_lookup_device[DWC_EVENT_DEVICE_EVENT_ID_WAKEUP] = "DWC_EVENT_DEVICE_EVENT_ID_WAKEUP "; |
| 89 | event_lookup_device[DWC_EVENT_DEVICE_EVENT_ID_USB_LINK_STATUS_CHANGE] = "DWC_EVENT_DEVICE_EVENT_ID_USB_LINK_STATUS_CHANGE"; |
| 90 | event_lookup_device[DWC_EVENT_DEVICE_EVENT_ID_CONNECT_DONE] = "DWC_EVENT_DEVICE_EVENT_ID_CONNECT_DONE "; |
| 91 | event_lookup_device[DWC_EVENT_DEVICE_EVENT_ID_USB_RESET] = "DWC_EVENT_DEVICE_EVENT_ID_USB_RESET "; |
| 92 | event_lookup_device[DWC_EVENT_DEVICE_EVENT_ID_DISCONNECT] = "DWC_EVENT_DEVICE_EVENT_ID_DISCONNECT "; |
| 93 | |
| 94 | /* Control state */ |
| 95 | dev_ctrl_state_lookup[EP_FSM_INIT] = "EP_FSM_INIT "; |
| 96 | dev_ctrl_state_lookup[EP_FSM_SETUP] = "EP_FSM_SETUP "; |
| 97 | dev_ctrl_state_lookup[EP_FSM_CTRL_DATA] = "EP_FSM_CTRL_DATA "; |
| 98 | dev_ctrl_state_lookup[EP_FSM_WAIT_FOR_HOST_2] = "EP_FSM_WAIT_FOR_HOST_2"; |
| 99 | dev_ctrl_state_lookup[EP_FSM_WAIT_FOR_HOST_3] = "EP_FSM_WAIT_FOR_HOST_3"; |
| 100 | dev_ctrl_state_lookup[EP_FSM_STATUS_2] = "EP_FSM_STATUS_2 "; |
| 101 | dev_ctrl_state_lookup[EP_FSM_STATUS_3] = "EP_FSM_STATUS_3 "; |
| 102 | dev_ctrl_state_lookup[EP_FSM_STALL] = "EP_FSM_STALL "; |
| 103 | |
| 104 | /* EP state */ |
| 105 | ep_state_lookup[EP_STATE_INIT] = "EP_STATE_INIT"; |
| 106 | ep_state_lookup[EP_STATE_INACTIVE] = "EP_STATE_INACTIVE"; |
| 107 | ep_state_lookup[EP_STATE_START_TRANSFER] = "EP_STATE_START_TRANSFER"; |
| 108 | ep_state_lookup[EP_STATE_XFER_IN_PROG] = "EP_STATE_XFER_IN_PROG"; |
| 109 | |
| 110 | /* HS link status */ |
| 111 | hs_link_state_lookup[ON] = "ON "; |
| 112 | hs_link_state_lookup[L1] = "L1 "; |
| 113 | hs_link_state_lookup[L2] = "L2 "; |
| 114 | hs_link_state_lookup[DISCONNECTED] = "DISCONNECTED "; |
| 115 | hs_link_state_lookup[EARLY_SUSPEND] = "EARLY_SUSPEND"; |
| 116 | hs_link_state_lookup[RESET] = "RESET "; |
| 117 | hs_link_state_lookup[RESUME] = "RESUME "; |
| 118 | |
| 119 | /* SS link status */ |
| 120 | ss_link_state_lookup[U0] = "U0 "; |
| 121 | ss_link_state_lookup[U1] = "U1 "; |
| 122 | ss_link_state_lookup[U2] = "U2 "; |
| 123 | ss_link_state_lookup[U3] = "U3 "; |
| 124 | ss_link_state_lookup[SS_DIS] = "SS_DIS "; |
| 125 | ss_link_state_lookup[RX_DET] = "RX_DET "; |
| 126 | ss_link_state_lookup[SS_INACT] = "SS_INACT "; |
| 127 | ss_link_state_lookup[POLL] = "POLL "; |
| 128 | ss_link_state_lookup[RECOV] = "RECOV "; |
| 129 | ss_link_state_lookup[HRESET] = "HRESET "; |
| 130 | ss_link_state_lookup[CMPLY] = "CMPLY "; |
| 131 | ss_link_state_lookup[LPBK] = "LPBK "; |
| 132 | ss_link_state_lookup[RESUME_RESET] = "RESUME_RESET"; |
| 133 | |
| 134 | /* connection speed */ |
| 135 | speed_lookup[DSTS_CONNECTSPD_HS] = "DSTS_CONNECTSPD_HS "; |
| 136 | speed_lookup[DSTS_CONNECTSPD_FS1] = "DSTS_CONNECTSPD_FS1"; |
| 137 | speed_lookup[DSTS_CONNECTSPD_LS] = "DSTS_CONNECTSPD_LS "; |
| 138 | speed_lookup[DSTS_CONNECTSPD_FS2] = "DSTS_CONNECTSPD_FS1"; |
| 139 | speed_lookup[DSTS_CONNECTSPD_SS] = "DSTS_CONNECTSPD_SS "; |
| 140 | |
| 141 | /* dwc command */ |
| 142 | cmd_lookup[DEPCMD_CMD_SET_EP_CONF] = "DEPCMD_CMD_SET_EP_CONF "; |
| 143 | cmd_lookup[DEPCMD_CMD_SET_TR_CONF] = "DEPCMD_CMD_SET_TR_CONF "; |
| 144 | cmd_lookup[DEPCMD_CMD_GET_EP_STATE] = "DEPCMD_CMD_GET_EP_STATE "; |
| 145 | cmd_lookup[DEPCMD_CMD_SET_STALL] = "DEPCMD_CMD_SET_STALL "; |
| 146 | cmd_lookup[DEPCMD_CMD_CLEAR_STALL] = "DEPCMD_CMD_CLEAR_STALL "; |
| 147 | cmd_lookup[DEPCMD_CMD_START_TRANSFER] = "DEPCMD_CMD_START_TRANSFER "; |
| 148 | cmd_lookup[DEPCMD_CMD_UPDATE_TRANSFER] = "DEPCMD_CMD_UPDATE_TRANSFER"; |
| 149 | cmd_lookup[DEPCMD_CMD_END_TRANSFER] = "DEPCMD_CMD_END_TRANSFER "; |
| 150 | cmd_lookup[DEPCMD_CMD_START_NEW_CONF] = "DEPCMD_CMD_START_NEW_CONF "; |
| 151 | } |
| 152 | |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 153 | static void dwc_print_ep_event_details(dwc_dev_t *dev, uint32_t *event) |
| 154 | { |
| 155 | dwc_event_ep_event_id_t event_id = DWC_EVENT_EP_EVENT_ID(*event); |
| 156 | uint8_t ep_phy_num = DWC_EVENT_EP_EVENT_EP_NUM(*event); |
| 157 | uint8_t event_ctrl_stage = DWC_EVENT_EP_EVENT_CTRL_STAGE(*event); |
| 158 | uint8_t event_status = DWC_EVENT_EP_EVENT_STATUS(*event); |
| 159 | uint8_t xfer_res_idx = DWC_EVENT_EP_EVENT_XFER_RES_IDX(*event); |
| 160 | uint16_t event_param = DWC_EVENT_EP_EVENT_PARAM(*event); |
| 161 | dwc_dep_cmd_id_t cmd = DWC_EVENT_EP_EVENT_CMD_TYPE(*event); |
| 162 | |
| 163 | ERR("\n\n"); |
| 164 | ERR("EP event (0x%x) details\n", *event); |
| 165 | ERR("event_id = %d, %s\n", event_id, event_lookup_ep[event_id]); |
| 166 | ERR("ep_phy_num = %d\n", ep_phy_num); |
| 167 | ERR("event_ctrl_stage = %d, %s\n", event_ctrl_stage, dev_ctrl_state_lookup[event_ctrl_stage]); |
| 168 | ERR("event_status = %d\n", event_status); |
| 169 | ERR("xfer_res_idx = %d\n", xfer_res_idx); |
| 170 | ERR("event_param = %d\n", event_param); |
| 171 | ERR("event_cmd_type = %d, %s\n", cmd, cmd_lookup[cmd]); |
| 172 | ERR("\n"); |
| 173 | } |
| 174 | |
| 175 | static void dwc_print_ep_details(dwc_dev_t *dev, uint8_t ep_index) |
| 176 | { |
| 177 | ERR("\n"); |
| 178 | ERR("EP ( index = %d) status: \n", ep_index); |
| 179 | ERR("phy_num = %d \n", dev->ep[ep_index].phy_num); |
| 180 | ERR("usb ep num = %d \n", dev->ep[ep_index].number); |
| 181 | ERR("dir = %d \n", dev->ep[ep_index].dir); |
| 182 | ERR("type = %d \n", dev->ep[ep_index].type); |
| 183 | ERR("resource_idx = %d \n", dev->ep[ep_index].resource_idx); |
| 184 | ERR("trb_queued = %d \n", dev->ep[ep_index].trb_queued); |
| 185 | ERR("bytes_queued = %d \n", dev->ep[ep_index].bytes_queued); |
| 186 | ERR("state = %d, %s \n", dev->ep[ep_index].state, ep_state_lookup[dev->ep[ep_index].state]); |
| 187 | ERR("ep req len = %d trbctl = %d\n", dev->ep[ep_index].req.len, dev->ep[ep_index].req.trbctl); |
| 188 | ERR("\n"); |
| 189 | } |
| 190 | |
| 191 | static void dwc_print_current_state(dwc_dev_t *dev) |
| 192 | { |
| 193 | uint8_t i = 0; |
| 194 | |
| 195 | ERR("\n"); |
| 196 | ERR("dwc core = 0x%x\n", dev->core_id); |
| 197 | ERR("ctrl_state = %d, %s\n", dev->ctrl_state, dev_ctrl_state_lookup[dev->ctrl_state]); |
| 198 | |
| 199 | for (i = 0; i < DWC_MAX_NUM_OF_EP; i++) |
| 200 | { |
| 201 | dwc_print_ep_details(dev, i); |
| 202 | } |
| 203 | |
| 204 | ERR("\n"); |
| 205 | } |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 206 | |
| 207 | /******************************** DWC global **********************************/ |
| 208 | /* Initialize DWC driver. */ |
| 209 | dwc_dev_t* dwc_init(dwc_config_t *config) |
| 210 | { |
| 211 | dwc_dev_t *dev = (dwc_dev_t*) malloc(sizeof(dwc_dev_t)); |
| 212 | ASSERT(dev); |
| 213 | |
Channagoud Kadabi | 700c068 | 2014-06-05 19:15:02 -0700 | [diff] [blame] | 214 | memset(dev, 0, sizeof(dwc_dev_t)); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 215 | |
| 216 | /* save config info */ |
| 217 | dev->base = config->base; |
| 218 | dev->event_buf.buf = config->event_buf; |
| 219 | dev->event_buf.buf_size = config->event_buf_size; |
| 220 | dev->event_buf.index = 0; |
| 221 | dev->event_buf.max_index = (config->event_buf_size)/4 - 1; /* (max num of 4 byte events) - 1 */ |
| 222 | |
| 223 | dev->notify_context = config->notify_context; |
| 224 | dev->notify = config->notify; |
| 225 | |
| 226 | /* allocate buffer for receiving setup packet */ |
| 227 | dev->setup_pkt = memalign(CACHE_LINE, ROUNDUP(DWC_SETUP_PKT_LEN, CACHE_LINE)); |
| 228 | ASSERT(dev->setup_pkt); |
| 229 | |
| 230 | /* callback function to handler setup packet */ |
| 231 | dev->setup_context = config->setup_context; |
| 232 | dev->setup_handler = config->setup_handler; |
| 233 | |
| 234 | /* read core version from h/w */ |
| 235 | dev->core_id = dwc_coreid(dev); |
| 236 | |
| 237 | /* register for interrupt */ |
| 238 | register_int_handler(USB30_EE1_IRQ, dwc_irq_handler_ee1, dev); |
| 239 | |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 240 | /* note: only for debug */ |
| 241 | dwc_debug_lookup_init(); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 242 | |
| 243 | return dev; |
| 244 | } |
| 245 | |
| 246 | /* interrupt handler */ |
| 247 | static enum handler_return dwc_irq_handler_ee1(void* context) |
| 248 | { |
| 249 | dwc_dev_t *dev; |
| 250 | uint16_t event_size; /* number of bytes used by the event */ |
| 251 | uint32_t event[3] = {0x0, 0x0, 0x0}; |
| 252 | |
| 253 | /* get the device on which this interrupt occurred */ |
| 254 | dev = (dwc_dev_t *) context; |
| 255 | |
| 256 | /* while there are events to be processed */ |
| 257 | while((event_size = dwc_event_get_next(dev, event))) |
| 258 | { |
| 259 | /* device event? */ |
| 260 | if(DWC_EVENT_IS_DEVICE_EVENT(*event)) |
| 261 | { |
| 262 | /* handle device events */ |
| 263 | dwc_event_handler_device(dev, event); |
| 264 | } |
| 265 | else |
| 266 | { |
| 267 | /* endpoint event */ |
| 268 | uint8_t ep_phy_num = DWC_EVENT_EP_EVENT_EP_NUM(*event); |
| 269 | |
| 270 | if ((ep_phy_num == 0) || |
| 271 | (ep_phy_num == 1)) |
| 272 | { |
| 273 | /* handle control ep event */ |
| 274 | dwc_event_handler_ep_ctrl(dev, event); |
| 275 | } |
| 276 | else |
| 277 | { |
| 278 | /* handle non-control ep event. only bulk ep is supported.*/ |
| 279 | dwc_event_handler_ep_bulk(dev, event); |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | /* update number of bytes processed */ |
| 284 | dwc_event_processed(dev, event_size); |
| 285 | } |
| 286 | |
| 287 | return INT_NO_RESCHEDULE; |
| 288 | } |
| 289 | |
| 290 | /*====================== DWC Event configuration/handling functions========== */ |
| 291 | |
| 292 | /* handles all device specific events */ |
| 293 | void dwc_event_handler_device(dwc_dev_t *dev, uint32_t *event) |
| 294 | { |
| 295 | dwc_event_device_event_id_t event_id = DWC_EVENT_DEVICE_EVENT_ID(*event); |
| 296 | |
| 297 | DBG("\nDEVICE_EVENT: %s in %s \n", event_lookup_device[event_id], |
| 298 | dev_ctrl_state_lookup[dev->ctrl_state]); |
| 299 | |
| 300 | switch (event_id) |
| 301 | { |
| 302 | case DWC_EVENT_DEVICE_EVENT_ID_VENDOR_DEVICE_TEST_LMP: |
| 303 | case DWC_EVENT_DEVICE_EVENT_ID_BUFFER_OVERFLOW: |
| 304 | case DWC_EVENT_DEVICE_EVENT_ID_GENERIC_CMD_COMPLETE: |
| 305 | case DWC_EVENT_DEVICE_EVENT_ID_ERRATIC_ERROR: |
| 306 | case DWC_EVENT_DEVICE_EVENT_ID_SOF: |
| 307 | case DWC_EVENT_DEVICE_EVENT_ID_SUSPEND_ENTRY: |
| 308 | case DWC_EVENT_DEVICE_EVENT_ID_HIBER: |
| 309 | case DWC_EVENT_DEVICE_EVENT_ID_WAKEUP: |
| 310 | break; |
| 311 | case DWC_EVENT_DEVICE_EVENT_ID_USB_LINK_STATUS_CHANGE: |
| 312 | { |
| 313 | dwc_event_device_link_status_change(dev, event); |
| 314 | } |
| 315 | break; |
| 316 | case DWC_EVENT_DEVICE_EVENT_ID_CONNECT_DONE: |
| 317 | { |
| 318 | dwc_event_device_connect_done(dev); |
| 319 | } |
| 320 | break; |
| 321 | case DWC_EVENT_DEVICE_EVENT_ID_USB_RESET: |
| 322 | { |
| 323 | dwc_event_device_reset(dev); |
| 324 | } |
| 325 | break; |
| 326 | case DWC_EVENT_DEVICE_EVENT_ID_DISCONNECT: |
| 327 | { |
| 328 | dwc_event_device_disconnect(dev); |
| 329 | } |
| 330 | break; |
| 331 | |
| 332 | default: |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 333 | ERR("\nUnhandled DEVICE_EVENT: %s in %s \n", |
| 334 | event_lookup_device[event_id], |
| 335 | dev_ctrl_state_lookup[dev->ctrl_state]); |
| 336 | dwc_print_current_state(dev); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 337 | ASSERT(0); |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | /* handle link status change event: does nothing for now. |
| 342 | * only for debug purpose. |
| 343 | */ |
| 344 | static void dwc_event_device_link_status_change(dwc_dev_t *dev, uint32_t *event) |
| 345 | { |
| 346 | #ifdef DEBUG_USB |
| 347 | uint8_t event_info = DWC_EVENT_DEVICE_EVENT_INFO(*event); |
| 348 | uint8_t ss_event = DWC_EVENT_DEVICE_EVENT_INFO_SS_EVENT(*event); |
| 349 | uint8_t link_state = DWC_EVENT_DEVICE_EVENT_INFO_LINK_STATE(event_info); |
| 350 | |
| 351 | if(ss_event) |
| 352 | { |
| 353 | DBG("\n SS link state = %s (%d)\n", ss_link_state_lookup[link_state], link_state); |
| 354 | } |
| 355 | else |
| 356 | { |
| 357 | DBG("\n HS link state = %s (%d)\n", hs_link_state_lookup[link_state], link_state); |
| 358 | } |
| 359 | #endif |
| 360 | } |
| 361 | |
| 362 | /* handle disconnect event */ |
| 363 | static void dwc_event_device_disconnect(dwc_dev_t *dev) |
| 364 | { |
| 365 | /* inform client that device is disconnected */ |
| 366 | if (dev->notify) |
| 367 | dev->notify(dev->notify_context, DWC_NOTIFY_EVENT_DISCONNECTED); |
| 368 | } |
| 369 | |
| 370 | /* handle connect event: snps 8.1.3 */ |
| 371 | static void dwc_event_device_connect_done(dwc_dev_t *dev) |
| 372 | { |
| 373 | uint8_t speed; |
| 374 | uint16_t max_pkt_size = 0; |
| 375 | dwc_notify_event_t dwc_event = DWC_NOTIFY_EVENT_DISCONNECTED; |
| 376 | |
| 377 | /* get connection speed */ |
| 378 | speed = dwc_connectspeed(dev); |
| 379 | |
| 380 | switch (speed) |
| 381 | { |
| 382 | case DSTS_CONNECTSPD_SS: |
| 383 | { |
| 384 | max_pkt_size = 512; |
| 385 | dwc_event = DWC_NOTIFY_EVENT_CONNECTED_SS; |
| 386 | } |
| 387 | break; |
| 388 | case DSTS_CONNECTSPD_HS: |
| 389 | { |
| 390 | max_pkt_size = 64; |
| 391 | dwc_event = DWC_NOTIFY_EVENT_CONNECTED_HS; |
| 392 | } |
| 393 | break; |
| 394 | case DSTS_CONNECTSPD_FS1: |
| 395 | case DSTS_CONNECTSPD_FS2: |
| 396 | { |
| 397 | max_pkt_size = 64; |
| 398 | dwc_event = DWC_NOTIFY_EVENT_CONNECTED_FS; |
| 399 | } |
| 400 | break; |
| 401 | case DSTS_CONNECTSPD_LS: |
| 402 | { |
| 403 | max_pkt_size = 8; |
| 404 | dwc_event = DWC_NOTIFY_EVENT_CONNECTED_LS; |
| 405 | } |
| 406 | break; |
| 407 | default: |
| 408 | ASSERT(0); |
| 409 | } |
| 410 | |
| 411 | DBG("\nspeed = %d : %s max_pkt_size %d \n", speed, |
| 412 | speed_lookup[speed], |
| 413 | max_pkt_size); |
| 414 | |
| 415 | |
| 416 | /* save max pkt size for control endpoints */ |
| 417 | dev->ep[0].max_pkt_size = max_pkt_size; |
| 418 | dev->ep[1].max_pkt_size = max_pkt_size; |
| 419 | |
| 420 | /* Issue a DEPCFG command (with Config Action set to "Modify") for |
| 421 | * physical endpoints 0 & 1 using the same endpoint characteristics from |
| 422 | * Power-On Reset, but set |
| 423 | * MaxPacketSize to 512 (SuperSpeed), 64 (High-Speed), |
| 424 | * 8/16/32/64 (Full-Speed), or 8 (Low-Speed). |
| 425 | */ |
| 426 | dwc_ep_cmd_set_config(dev, 0, SET_CONFIG_ACTION_MODIFY); |
| 427 | dwc_ep_cmd_set_config(dev, 1, SET_CONFIG_ACTION_MODIFY); |
| 428 | |
| 429 | /* TODO: future optimization: |
| 430 | * GUSB2CFG/GUSB3PIPECTL |
| 431 | * Depending on the connected speed, write to the other PHY's control |
| 432 | * register to suspend it. |
| 433 | * GTXFIFOSIZn (optional) Based on the new MaxPacketSize of IN endpoint 0, |
| 434 | * software may choose to re-allocate |
| 435 | * the TX FIFO sizes by writing to these registers. |
| 436 | */ |
| 437 | |
| 438 | /* inform client that device is connected */ |
| 439 | if (dev->notify) |
| 440 | dev->notify(dev->notify_context, dwc_event); |
| 441 | } |
| 442 | |
| 443 | /* handle usb reset event: |
| 444 | * snps 8.1.2: |
| 445 | * Set DevAddr to 0 |
| 446 | * end transfer for any active transfers (except for the default control EP) |
| 447 | */ |
| 448 | void dwc_event_device_reset(dwc_dev_t *dev) |
| 449 | { |
| 450 | /* set dev address to 0 */ |
| 451 | dwc_device_set_addr(dev, 0x0); |
| 452 | |
| 453 | /* Send "stop transfer" on any non-control ep |
| 454 | * which has a transfer in progress: snps 8.2.5 |
| 455 | */ |
| 456 | for (uint8_t ep_index = 2; ep_index < DWC_MAX_NUM_OF_EP; ep_index++) |
| 457 | { |
| 458 | dwc_ep_t *ep = &dev->ep[ep_index]; |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 459 | ASSERT(ep != NULL); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 460 | |
| 461 | DBG("\n RESET on EP = %d while state = %s", ep_index, |
| 462 | ep_state_lookup[ep->state]); |
| 463 | |
| 464 | if ((ep->state == EP_STATE_START_TRANSFER) || |
| 465 | (ep->state == EP_STATE_XFER_IN_PROG)) |
| 466 | { |
| 467 | DBG("\n NEED to do end transfer"); |
| 468 | |
| 469 | dwc_ep_cmd_end_transfer(dev, ep->phy_num); |
| 470 | } |
| 471 | } |
| 472 | |
| 473 | /* inform client that device is offline */ |
| 474 | if (dev->notify) |
| 475 | { |
| 476 | DBG("\n calling Notify for OFFLINE event.\n"); |
| 477 | dev->notify(dev->notify_context, DWC_NOTIFY_EVENT_OFFLINE); |
| 478 | } |
| 479 | } |
| 480 | |
| 481 | /* handle control endpoint specific events: |
| 482 | * implements the control transfer programming model as described |
| 483 | * in snps chapter 8.4, figure 8-2. |
| 484 | */ |
| 485 | void dwc_event_handler_ep_ctrl(dwc_dev_t *dev, uint32_t *event) |
| 486 | { |
| 487 | #ifdef DEBUG_USB |
| 488 | uint8_t ep_phy_num = DWC_EVENT_EP_EVENT_EP_NUM(*event); |
| 489 | dwc_event_ep_event_id_t event_id = DWC_EVENT_EP_EVENT_ID(*event); |
| 490 | uint8_t event_status = DWC_EVENT_EP_EVENT_STATUS(*event); |
| 491 | uint16_t event_param = DWC_EVENT_EP_EVENT_PARAM(*event); |
| 492 | |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 493 | ASSERT(DWC_EP_PHY_TO_INDEX(ep_phy_num) < DWC_MAX_NUM_OF_EP); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 494 | dwc_ep_t *ep = &dev->ep[DWC_EP_PHY_TO_INDEX(ep_phy_num)]; |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 495 | ASSERT(ep != NULL); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 496 | |
| 497 | DBG("\n\n\n++EP_EVENT: %s in ctrl_state: %s ep_state[%d]: %s", |
| 498 | event_lookup_ep[event_id], |
| 499 | dev_ctrl_state_lookup[dev->ctrl_state], |
| 500 | ep_phy_num, |
| 501 | ep_state_lookup[ep->state]); |
| 502 | |
| 503 | DBG("\n ep_phy_num = %d param = 0x%x status = 0x%x", ep_phy_num, |
| 504 | event_param, |
| 505 | event_status); |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 506 | #endif |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 507 | |
| 508 | /* call the handler for the current control state */ |
| 509 | switch (dev->ctrl_state) |
| 510 | { |
| 511 | case EP_FSM_SETUP: |
| 512 | { |
| 513 | dwc_event_handler_ep_ctrl_state_setup(dev, event); |
| 514 | } |
| 515 | break; |
| 516 | case EP_FSM_CTRL_DATA: |
| 517 | { |
| 518 | dwc_event_handler_ep_ctrl_state_data(dev, event); |
| 519 | } |
| 520 | break; |
| 521 | case EP_FSM_WAIT_FOR_HOST_2: |
| 522 | { |
| 523 | dwc_event_handler_ep_ctrl_state_wait_for_host_2(dev, event); |
| 524 | } |
| 525 | break; |
| 526 | case EP_FSM_WAIT_FOR_HOST_3: |
| 527 | { |
| 528 | dwc_event_handler_ep_ctrl_state_wait_for_host_3(dev, event); |
| 529 | } |
| 530 | break; |
| 531 | case EP_FSM_STATUS_2: |
| 532 | { |
| 533 | dwc_event_handler_ep_ctrl_state_status_2(dev, event); |
| 534 | } |
| 535 | break; |
| 536 | case EP_FSM_STATUS_3: |
| 537 | { |
| 538 | dwc_event_handler_ep_ctrl_state_status_3(dev, event); |
| 539 | } |
| 540 | break; |
| 541 | case EP_FSM_STALL: |
| 542 | { |
| 543 | dwc_event_handler_ep_ctrl_state_stall(dev, event); |
| 544 | } |
| 545 | break; |
| 546 | |
| 547 | default: |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 548 | ERR("Invalid ctrl_state = %d\n", dev->ctrl_state); |
| 549 | dwc_print_ep_event_details(dev, event); |
| 550 | dwc_print_current_state(dev); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 551 | ASSERT(0); |
| 552 | } |
| 553 | |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 554 | #ifdef DEBUG_USB |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 555 | DBG("\n--EP_EVENT: %s in ctrl_state: %s ep_state[%d]: %s", |
| 556 | event_lookup_ep[event_id], |
| 557 | dev_ctrl_state_lookup[dev->ctrl_state], |
| 558 | ep_phy_num, |
| 559 | ep_state_lookup[ep->state]); |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 560 | #endif |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 561 | } |
| 562 | |
| 563 | /* check status of transfer: |
| 564 | * returns TRB status: non-zero value indicates failure to complete transfer. |
| 565 | * Also updates the "bytes_in_buf". This field indicates the number of bytes |
| 566 | * still remaining to be transferred. This field will be zero when all the |
| 567 | * requested data is transferred. |
| 568 | */ |
| 569 | uint8_t dwc_event_check_trb_status(dwc_dev_t *dev, |
| 570 | uint32_t *event, |
| 571 | uint8_t index, |
| 572 | uint32_t *bytes_in_buf) |
| 573 | { |
| 574 | uint8_t status = 0; |
| 575 | uint8_t trb_updated = 0; |
| 576 | uint8_t event_status = DWC_EVENT_EP_EVENT_STATUS(*event); |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 577 | |
| 578 | ASSERT(index < DWC_MAX_NUM_OF_EP); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 579 | dwc_ep_t *ep = &dev->ep[index]; |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 580 | ASSERT(ep != NULL); |
| 581 | |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 582 | dwc_trb_t *trb = ep->trb; |
| 583 | uint32_t num_of_trb = ep->trb_queued; |
| 584 | uint32_t bytes_remaining = 0; |
| 585 | |
| 586 | /* sanity ck. */ |
| 587 | ASSERT(num_of_trb); |
| 588 | |
| 589 | /* invalidate trb data before reading */ |
Maria Yu | 4c12e92 | 2018-05-10 16:18:20 +0800 | [diff] [blame] | 590 | arch_invalidate_cache_range((addr_t) trb, ROUNDUP(sizeof(dwc_trb_t)*num_of_trb, CACHE_LINE)); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 591 | |
| 592 | while (num_of_trb) |
| 593 | { |
| 594 | bytes_remaining += REG_READ_FIELD_LOCAL(&trb->f3, TRB_F3, BUFSIZ); |
| 595 | |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 596 | /* The first non-zero status indicates the transfer status. Update |
| 597 | * "status" only once but still go through all the TRBs to find out |
| 598 | * the bytes still remaining to be transferred. |
| 599 | */ |
| 600 | if (!status) |
| 601 | { |
| 602 | status = REG_READ_FIELD_LOCAL(&trb->f3, TRB_F3, TRBSTS); |
| 603 | } |
| 604 | |
| 605 | if ((event_status & DWC_XFER_COMPLETE_EVT_STATUS_SHORT_PKT) && |
| 606 | (REG_READ_FIELD_LOCAL(&trb->f4, TRB_F4, HWO))) |
| 607 | { |
| 608 | /* This TRB needs to be reclaimed since transfer completed due to |
| 609 | * reception of a short pkt. |
| 610 | * "fast-forward" condition as described in snps 8.2.3.2. |
| 611 | */ |
| 612 | DBG("\n TRB needs to be reclaimed by sw. trb = 0x%x\n", (uint32_t) trb); |
| 613 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, HWO, 0x0); |
| 614 | trb_updated = 1; |
| 615 | } |
Channagoud Kadabi | c075a6f | 2014-02-18 12:10:30 -0800 | [diff] [blame] | 616 | |
| 617 | /* point to next trb */ |
| 618 | trb++; |
| 619 | |
| 620 | /* decrement trb count */ |
| 621 | num_of_trb--; |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 622 | } |
| 623 | |
| 624 | /* flush out any updates to trb before continuing */ |
| 625 | if (trb_updated) |
| 626 | { |
| 627 | arch_clean_invalidate_cache_range((addr_t) ep->trb, |
| 628 | sizeof(dwc_trb_t)*ep->trb_queued); |
| 629 | } |
| 630 | |
| 631 | /* reset the EP's queued trb count */ |
| 632 | ep->trb_queued = 0; |
| 633 | |
| 634 | *bytes_in_buf = bytes_remaining; |
| 635 | |
| 636 | DBG("\n trb_status: %d total buf size = 0x%x \n", status, *bytes_in_buf); |
| 637 | |
| 638 | return status; |
| 639 | } |
| 640 | |
| 641 | /* handle all events occurring in Control-Setup state */ |
| 642 | static void dwc_event_handler_ep_ctrl_state_setup(dwc_dev_t *dev, |
| 643 | uint32_t *event) |
| 644 | { |
| 645 | uint8_t ep_phy_num = DWC_EVENT_EP_EVENT_EP_NUM(*event); |
| 646 | dwc_event_ep_event_id_t event_id = DWC_EVENT_EP_EVENT_ID(*event); |
| 647 | uint8_t event_status = DWC_EVENT_EP_EVENT_STATUS(*event); |
| 648 | |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 649 | ASSERT(DWC_EP_PHY_TO_INDEX(ep_phy_num) < DWC_MAX_NUM_OF_EP); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 650 | dwc_ep_t *ep = &dev->ep[DWC_EP_PHY_TO_INDEX(ep_phy_num)]; |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 651 | ASSERT(ep != NULL); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 652 | |
| 653 | switch (event_id) |
| 654 | { |
| 655 | case DWC_EVENT_EP_CMD_COMPLETE: |
| 656 | { |
| 657 | dwc_dep_cmd_id_t cmd = DWC_EVENT_EP_EVENT_CMD_TYPE(*event); |
| 658 | |
| 659 | if (cmd == DEPCMD_CMD_START_TRANSFER) |
| 660 | { |
| 661 | ASSERT(ep->state == EP_STATE_START_TRANSFER); |
| 662 | |
| 663 | ASSERT(event_status == 0); |
| 664 | |
| 665 | /* save the resource id assigned to this ep. */ |
| 666 | ep->state = EP_STATE_XFER_IN_PROG; |
| 667 | ep->resource_idx = DWC_EVENT_EP_EVENT_XFER_RES_IDX(*event); |
| 668 | } |
| 669 | else |
| 670 | { |
| 671 | DBG("\n cmd = %s has no action. ignored.", cmd_lookup[cmd]); |
| 672 | } |
| 673 | } |
| 674 | break; |
| 675 | |
| 676 | case DWC_EVENT_EP_XFER_NOT_READY: |
| 677 | { |
| 678 | /* attempting to start data/status before setup. snps 8.4.2 #2 */ |
| 679 | DBG("\nattempting to start data/status before setup. stalling..\n"); |
| 680 | |
| 681 | dwc_ep_cmd_stall(dev, ep_phy_num); |
| 682 | |
| 683 | /* new state is stall */ |
| 684 | dev->ctrl_state = EP_FSM_STALL; |
| 685 | } |
| 686 | break; |
| 687 | |
| 688 | case DWC_EVENT_EP_XFER_COMPLETE: |
| 689 | { |
| 690 | uint32_t bytes_remaining = 0; |
| 691 | uint8_t status = 0; |
| 692 | |
| 693 | /* cannot happen on any other ep */ |
| 694 | ASSERT(ep_phy_num == 0); |
| 695 | |
| 696 | /* Assert if ep state is not xfer_in_prog. fatal error. */ |
| 697 | ASSERT(ep->state == EP_STATE_XFER_IN_PROG); |
| 698 | |
| 699 | /* update ep state to inactive. */ |
| 700 | ep->state = EP_STATE_INACTIVE; |
| 701 | |
| 702 | /* check transfer status. */ |
| 703 | status = dwc_event_check_trb_status(dev, |
| 704 | event, |
| 705 | DWC_EP_PHY_TO_INDEX(ep_phy_num), |
| 706 | &bytes_remaining); |
| 707 | |
| 708 | if (status || bytes_remaining) |
| 709 | { |
| 710 | /* transfer failed. queue another transfer. */ |
| 711 | dwc_ep_ctrl_state_setup_enter(dev); |
| 712 | } |
| 713 | else |
| 714 | { |
| 715 | int ret; |
| 716 | uint8_t *data = dev->setup_pkt; /* setup pkt data */ |
| 717 | |
| 718 | /* invalidate any cached setup data before reading */ |
Maria Yu | 4c12e92 | 2018-05-10 16:18:20 +0800 | [diff] [blame] | 719 | arch_invalidate_cache_range((addr_t) data, ROUNDUP(DWC_SETUP_PKT_LEN, CACHE_LINE)); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 720 | |
| 721 | /* call setup handler */ |
| 722 | ret = dev->setup_handler(dev->setup_context, data); |
| 723 | |
| 724 | if (ret == DWC_SETUP_2_STAGE) |
| 725 | { |
| 726 | /* this is a 2 stage setup. */ |
| 727 | dev->ctrl_state = EP_FSM_WAIT_FOR_HOST_2; |
| 728 | } |
| 729 | else if (ret == DWC_SETUP_3_STAGE) |
| 730 | { |
| 731 | /* this is a 3 stage setup. */ |
| 732 | dev->ctrl_state = EP_FSM_CTRL_DATA; |
| 733 | } |
| 734 | else |
| 735 | { |
| 736 | /* bad setup bytes. stall */ |
| 737 | dwc_ep_cmd_stall(dev, ep_phy_num); |
| 738 | |
| 739 | /* new state is stall */ |
| 740 | dev->ctrl_state = EP_FSM_STALL; |
| 741 | } |
| 742 | } |
| 743 | } |
| 744 | break; |
| 745 | case DWC_EVENT_EP_XFER_IN_PROGRESS: |
| 746 | default: |
| 747 | /* event is not expected in this state */ |
Channagoud Kadabi | 9ac7246 | 2014-04-15 15:29:41 -0700 | [diff] [blame] | 748 | ERR("\n Ignore the unexpected EP event: %s\n", event_lookup_ep[event_id]); |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 749 | dwc_print_ep_event_details(dev, event); |
| 750 | dwc_print_current_state(dev); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 751 | } |
| 752 | } |
| 753 | |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 754 | |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 755 | /* handle all events occurring in Control-Data state */ |
| 756 | static void dwc_event_handler_ep_ctrl_state_data(dwc_dev_t *dev, |
| 757 | uint32_t *event) |
| 758 | { |
| 759 | uint8_t ep_phy_num = DWC_EVENT_EP_EVENT_EP_NUM(*event); |
| 760 | dwc_event_ep_event_id_t event_id = DWC_EVENT_EP_EVENT_ID(*event); |
| 761 | uint8_t event_ctrl_stage = DWC_EVENT_EP_EVENT_CTRL_STAGE(*event); |
| 762 | uint8_t event_status = DWC_EVENT_EP_EVENT_STATUS(*event); |
| 763 | |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 764 | ASSERT(DWC_EP_PHY_TO_INDEX(ep_phy_num) < DWC_MAX_NUM_OF_EP); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 765 | dwc_ep_t *ep = &dev->ep[DWC_EP_PHY_TO_INDEX(ep_phy_num)]; |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 766 | ASSERT(ep != NULL); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 767 | |
| 768 | switch (event_id) |
| 769 | { |
| 770 | case DWC_EVENT_EP_CMD_COMPLETE: |
| 771 | { |
| 772 | dwc_dep_cmd_id_t cmd = DWC_EVENT_EP_EVENT_CMD_TYPE(*event); |
| 773 | |
| 774 | if (cmd == DEPCMD_CMD_START_TRANSFER) |
| 775 | { |
| 776 | ASSERT(ep->state == EP_STATE_START_TRANSFER); |
| 777 | |
| 778 | ASSERT(event_status == 0); |
| 779 | |
| 780 | /* save the resource id assigned to this ep. */ |
| 781 | ep->state = EP_STATE_XFER_IN_PROG; |
| 782 | ep->resource_idx = DWC_EVENT_EP_EVENT_XFER_RES_IDX(*event); |
| 783 | } |
| 784 | else |
| 785 | { |
| 786 | DBG("\n cmd = %s has no action. ignored.", cmd_lookup[cmd]); |
| 787 | } |
| 788 | } |
| 789 | break; |
| 790 | |
| 791 | case DWC_EVENT_EP_XFER_NOT_READY: |
| 792 | { |
| 793 | /* confirm that this is control data request. |
| 794 | * control_status_request is invalid event in this state. |
| 795 | * assert if it ever occurs. |
| 796 | * something must be wrong in fsm implementation. |
| 797 | */ |
| 798 | ASSERT(event_ctrl_stage == CONTROL_DATA_REQUEST); |
| 799 | |
| 800 | /* In this state, the ep must be in transfer state. |
| 801 | * otherwise this came on an ep that we are not expecting any data. |
| 802 | */ |
| 803 | if((ep->state == EP_STATE_START_TRANSFER) || |
| 804 | (ep->state == EP_STATE_XFER_IN_PROG)) |
| 805 | { |
| 806 | DBG("\n Host requested data on ep_phy_num = %d." |
| 807 | "Transfer already started. No action....", ep_phy_num); |
| 808 | } |
| 809 | else |
| 810 | { |
| 811 | /* host attempting to move data in wrong direction. |
| 812 | * end transfer for the direction that we started and stall. |
| 813 | */ |
| 814 | uint8_t end_ep_phy_num; |
| 815 | |
| 816 | /* end the other ep */ |
| 817 | end_ep_phy_num = (ep_phy_num == 0) ? 1 : 0; |
| 818 | |
| 819 | DBG("\nAttempting to move data in wrong direction. stalling. "); |
| 820 | |
| 821 | dwc_ep_cmd_end_transfer(dev, end_ep_phy_num); |
| 822 | |
| 823 | /* stall */ |
| 824 | dwc_ep_cmd_stall(dev, end_ep_phy_num); |
| 825 | |
| 826 | /* move to stall state. */ |
| 827 | dev->ctrl_state = EP_FSM_STALL; |
| 828 | } |
| 829 | } |
| 830 | break; |
| 831 | case DWC_EVENT_EP_XFER_COMPLETE: |
| 832 | { |
| 833 | uint32_t bytes_remaining; |
| 834 | uint8_t status; |
| 835 | |
| 836 | /* should never happen in any other state. |
| 837 | * something wrong in fsm implementation. |
| 838 | */ |
| 839 | ASSERT(ep->state == EP_STATE_XFER_IN_PROG); |
| 840 | |
| 841 | /* transfer is complete */ |
| 842 | ep->state = EP_STATE_INACTIVE; |
| 843 | |
| 844 | /* check transfer status */ |
| 845 | status = dwc_event_check_trb_status(dev, |
| 846 | event, |
| 847 | DWC_EP_PHY_TO_INDEX(ep_phy_num), |
| 848 | &bytes_remaining); |
| 849 | |
| 850 | if (status || bytes_remaining) |
| 851 | { |
| 852 | DBG("\n\n ********DATA TRANSFER FAILED ************* " |
| 853 | "status = %d bytes_remaining = %d\n\n", |
| 854 | status, bytes_remaining); |
| 855 | } |
| 856 | |
| 857 | /* wait for host to request status */ |
| 858 | dev->ctrl_state = EP_FSM_WAIT_FOR_HOST_3; |
| 859 | } |
| 860 | break; |
| 861 | case DWC_EVENT_EP_XFER_IN_PROGRESS: |
| 862 | default: |
| 863 | /* event is not expected in this state */ |
Channagoud Kadabi | 9ac7246 | 2014-04-15 15:29:41 -0700 | [diff] [blame] | 864 | ERR("\n Ignore the unexpected EP event: %s\n", event_lookup_ep[event_id]); |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 865 | dwc_print_ep_event_details(dev, event); |
| 866 | dwc_print_current_state(dev); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 867 | } |
| 868 | } |
| 869 | |
| 870 | /* handle all events occurring in Wait-for-Host-2 state */ |
| 871 | static void dwc_event_handler_ep_ctrl_state_wait_for_host_2(dwc_dev_t *dev, |
| 872 | uint32_t *event) |
| 873 | { |
| 874 | uint8_t ep_phy_num = DWC_EVENT_EP_EVENT_EP_NUM(*event); |
| 875 | dwc_event_ep_event_id_t event_id = DWC_EVENT_EP_EVENT_ID(*event); |
| 876 | uint8_t event_ctrl_stage = DWC_EVENT_EP_EVENT_CTRL_STAGE(*event); |
| 877 | |
| 878 | switch (event_id) |
| 879 | { |
Channagoud Kadabi | 49c82bf | 2014-02-12 17:08:42 -0800 | [diff] [blame] | 880 | case DWC_EVENT_EP_CMD_COMPLETE: |
| 881 | { |
Veera Sundaram Sankaran | 0018151 | 2014-12-09 11:23:39 -0800 | [diff] [blame] | 882 | DBG("\n cmd = %s has no action. ignored.", |
| 883 | cmd_lookup[DWC_EVENT_EP_EVENT_CMD_TYPE(*event)]); |
Channagoud Kadabi | 49c82bf | 2014-02-12 17:08:42 -0800 | [diff] [blame] | 884 | } |
| 885 | break; |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 886 | case DWC_EVENT_EP_XFER_NOT_READY: |
| 887 | { |
| 888 | if (event_ctrl_stage == CONTROL_DATA_REQUEST) |
| 889 | { |
| 890 | DBG("\n\n attempting to start data when setup did not indicate" |
| 891 | "data stage. stall...\n\n"); |
| 892 | |
| 893 | dwc_ep_cmd_stall(dev, ep_phy_num); |
| 894 | |
| 895 | /* move to stall state. */ |
| 896 | dev->ctrl_state = EP_FSM_STALL; |
| 897 | } |
| 898 | else if (event_ctrl_stage == CONTROL_STATUS_REQUEST) |
| 899 | { |
| 900 | /* status cannot happen on phy = 0 */ |
| 901 | ASSERT(ep_phy_num == 1); |
| 902 | |
| 903 | dwc_request_t req; |
| 904 | |
| 905 | req.callback = 0x0; |
| 906 | req.context = 0x0; |
| 907 | req.data = 0x0; |
| 908 | req.len = 0x0; |
| 909 | req.trbctl = TRBCTL_CONTROL_STATUS_2; |
| 910 | |
| 911 | dwc_request_queue(dev, ep_phy_num, &req); |
| 912 | |
| 913 | dev->ctrl_state = EP_FSM_STATUS_2; |
| 914 | } |
| 915 | else |
| 916 | { |
| 917 | ASSERT(0); |
| 918 | } |
| 919 | } |
| 920 | break; |
| 921 | case DWC_EVENT_EP_XFER_IN_PROGRESS: |
| 922 | case DWC_EVENT_EP_XFER_COMPLETE: |
| 923 | default: |
| 924 | /* event not expected in this state. */ |
Channagoud Kadabi | 9ac7246 | 2014-04-15 15:29:41 -0700 | [diff] [blame] | 925 | ERR("\n Ignore the unexpected EP event: %s\n", event_lookup_ep[event_id]); |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 926 | dwc_print_ep_event_details(dev, event); |
| 927 | dwc_print_current_state(dev); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 928 | } |
| 929 | } |
| 930 | |
| 931 | /* handle all events occurring in Wait-for-Host-3 state */ |
| 932 | static void dwc_event_handler_ep_ctrl_state_wait_for_host_3(dwc_dev_t *dev, |
| 933 | uint32_t *event) |
| 934 | { |
| 935 | uint8_t ep_phy_num = DWC_EVENT_EP_EVENT_EP_NUM(*event); |
| 936 | dwc_event_ep_event_id_t event_id = DWC_EVENT_EP_EVENT_ID(*event); |
| 937 | uint8_t event_ctrl_stage = DWC_EVENT_EP_EVENT_CTRL_STAGE(*event); |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 938 | |
| 939 | ASSERT(DWC_EP_PHY_TO_INDEX(ep_phy_num) < DWC_MAX_NUM_OF_EP); |
Matthew Qin | 365014b | 2014-09-04 19:26:57 +0800 | [diff] [blame] | 940 | dwc_ep_t *ep = &dev->ep[DWC_EP_PHY_TO_INDEX(ep_phy_num)]; |
| 941 | ASSERT(ep != NULL); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 942 | |
| 943 | switch (event_id) |
| 944 | { |
Channagoud Kadabi | 49c82bf | 2014-02-12 17:08:42 -0800 | [diff] [blame] | 945 | case DWC_EVENT_EP_CMD_COMPLETE: |
| 946 | { |
Veera Sundaram Sankaran | 0018151 | 2014-12-09 11:23:39 -0800 | [diff] [blame] | 947 | DBG("\n cmd = %s has no action. ignored.", |
| 948 | cmd_lookup[DWC_EVENT_EP_EVENT_CMD_TYPE(*event)]); |
Channagoud Kadabi | 49c82bf | 2014-02-12 17:08:42 -0800 | [diff] [blame] | 949 | } |
| 950 | break; |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 951 | case DWC_EVENT_EP_XFER_NOT_READY: |
| 952 | { |
| 953 | if (event_ctrl_stage == CONTROL_DATA_REQUEST)/* data request */ |
| 954 | { |
Matthew Qin | 365014b | 2014-09-04 19:26:57 +0800 | [diff] [blame] | 955 | if (ep->state == EP_STATE_START_TRANSFER || |
| 956 | ep->state == EP_STATE_XFER_IN_PROG) { |
| 957 | /* |
| 958 | * special case handling when data stage transfer length |
| 959 | * was exact multiple of max_pkt_size. |
| 960 | * Need to setup a TRB to complete data stage with a zero |
| 961 | * length pkt transfer. |
| 962 | */ |
| 963 | |
| 964 | dwc_request_t req; |
| 965 | |
| 966 | req.callback = 0x0; |
| 967 | req.context = 0x0; |
| 968 | req.data = 0x0; |
| 969 | req.len = 0x0; |
| 970 | req.trbctl = TRBCTL_CONTROL_DATA; |
| 971 | |
| 972 | DBG("\n Sending the elp to host as the end of xfer\n"); |
| 973 | dwc_request_queue(dev, ep_phy_num, &req); |
| 974 | dev->ctrl_state = EP_FSM_CTRL_DATA; |
| 975 | } else { |
| 976 | DBG("\n attempting to start data when setup did not indicate" |
| 977 | "data stage. stall...\n\n"); |
| 978 | dwc_ep_cmd_stall(dev, ep_phy_num); |
| 979 | dev->ctrl_state = EP_FSM_STALL; |
| 980 | } |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 981 | } |
| 982 | else if (event_ctrl_stage == CONTROL_STATUS_REQUEST)/* stat req */ |
| 983 | { |
| 984 | dwc_request_t req; |
| 985 | |
| 986 | req.callback = 0x0; |
| 987 | req.context = 0x0; |
| 988 | req.data = 0x0; |
| 989 | req.len = 0x0; |
| 990 | req.trbctl = TRBCTL_CONTROL_STATUS_3; |
| 991 | |
| 992 | dwc_request_queue(dev, ep_phy_num, &req); |
| 993 | |
| 994 | dev->ctrl_state = EP_FSM_STATUS_3; |
| 995 | } |
| 996 | else |
| 997 | { |
| 998 | ASSERT(0); |
| 999 | } |
| 1000 | } |
| 1001 | break; |
| 1002 | case DWC_EVENT_EP_XFER_IN_PROGRESS: |
| 1003 | case DWC_EVENT_EP_XFER_COMPLETE: |
| 1004 | default: |
| 1005 | /* event is not expected in this state */ |
Channagoud Kadabi | 9ac7246 | 2014-04-15 15:29:41 -0700 | [diff] [blame] | 1006 | ERR("\n Ignore the unexpected EP event: %s\n", event_lookup_ep[event_id]); |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 1007 | dwc_print_ep_event_details(dev, event); |
| 1008 | dwc_print_current_state(dev); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1009 | } |
| 1010 | } |
| 1011 | |
| 1012 | |
| 1013 | /* handle all events occurring in Status-2 state */ |
| 1014 | static void dwc_event_handler_ep_ctrl_state_status_2(dwc_dev_t *dev, |
| 1015 | uint32_t *event) |
| 1016 | { |
| 1017 | uint8_t ep_phy_num = DWC_EVENT_EP_EVENT_EP_NUM(*event); |
| 1018 | dwc_event_ep_event_id_t event_id = DWC_EVENT_EP_EVENT_ID(*event); |
| 1019 | uint8_t event_status = DWC_EVENT_EP_EVENT_STATUS(*event); |
| 1020 | |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 1021 | ASSERT(DWC_EP_PHY_TO_INDEX(ep_phy_num) < DWC_MAX_NUM_OF_EP); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1022 | dwc_ep_t *ep = &dev->ep[DWC_EP_PHY_TO_INDEX(ep_phy_num)]; |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 1023 | ASSERT(ep != NULL); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1024 | |
| 1025 | switch (event_id) |
| 1026 | { |
| 1027 | case DWC_EVENT_EP_CMD_COMPLETE: |
| 1028 | { |
| 1029 | dwc_dep_cmd_id_t cmd = DWC_EVENT_EP_EVENT_CMD_TYPE(*event); |
| 1030 | |
| 1031 | if (cmd == DEPCMD_CMD_START_TRANSFER) |
| 1032 | { |
| 1033 | ASSERT(ep->state == EP_STATE_START_TRANSFER); |
| 1034 | |
| 1035 | ASSERT(event_status == 0); |
| 1036 | |
| 1037 | /* save the resource id assigned to this ep. */ |
| 1038 | ep->state = EP_STATE_XFER_IN_PROG; |
| 1039 | ep->resource_idx = DWC_EVENT_EP_EVENT_XFER_RES_IDX(*event); |
| 1040 | } |
| 1041 | else |
| 1042 | { |
| 1043 | DBG("\n cmd = %s has no action. ignored.", cmd_lookup[cmd]); |
| 1044 | } |
| 1045 | } |
| 1046 | break; |
| 1047 | case DWC_EVENT_EP_XFER_COMPLETE: |
| 1048 | { |
| 1049 | uint32_t bytes_remaining; |
| 1050 | uint8_t status; |
| 1051 | |
| 1052 | /* cannot happen on ep 0 */ |
| 1053 | ASSERT(ep_phy_num == 1); |
| 1054 | |
| 1055 | /* should never happen in any other state. |
| 1056 | * something wrong in fsm implementation. |
| 1057 | */ |
| 1058 | ASSERT(ep->state == EP_STATE_XFER_IN_PROG); |
Channagoud Kadabi | 363e740 | 2015-06-16 11:44:20 -0700 | [diff] [blame] | 1059 | if (dev->is_test_mode) |
| 1060 | { |
| 1061 | /* Write DCTL register with test mode value */ |
| 1062 | dwc_device_enter_test_mode(dev); |
| 1063 | dprintf(INFO, "Device entered test mode, please reset the device once testing is finished\n"); |
| 1064 | break; |
| 1065 | } |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1066 | |
| 1067 | ep->state = EP_STATE_INACTIVE; |
| 1068 | |
| 1069 | /* check transfer status */ |
| 1070 | status = dwc_event_check_trb_status(dev, |
| 1071 | event, |
| 1072 | DWC_EP_PHY_TO_INDEX(ep_phy_num), |
| 1073 | &bytes_remaining); |
| 1074 | |
| 1075 | if (status || bytes_remaining) |
| 1076 | { |
| 1077 | DBG("\n\n ******** TRANSFER FAILED ************* status =" |
| 1078 | " %d bytes_remaining = %d\n\n", status, bytes_remaining); |
| 1079 | } |
| 1080 | |
| 1081 | dwc_ep_ctrl_state_setup_enter(dev); |
| 1082 | } |
| 1083 | break; |
| 1084 | case DWC_EVENT_EP_XFER_NOT_READY: |
| 1085 | case DWC_EVENT_EP_XFER_IN_PROGRESS: |
| 1086 | default: |
| 1087 | /* event is not expected in this state */ |
Channagoud Kadabi | 9ac7246 | 2014-04-15 15:29:41 -0700 | [diff] [blame] | 1088 | ERR("\n Ignore the unexpected EP event: %s\n", event_lookup_ep[event_id]); |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 1089 | dwc_print_ep_event_details(dev, event); |
| 1090 | dwc_print_current_state(dev); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1091 | } |
| 1092 | } |
| 1093 | |
| 1094 | /* handle all events occurring in Status-3 state */ |
| 1095 | static void dwc_event_handler_ep_ctrl_state_status_3(dwc_dev_t *dev, |
| 1096 | uint32_t *event) |
| 1097 | { |
| 1098 | uint8_t ep_phy_num = DWC_EVENT_EP_EVENT_EP_NUM(*event); |
| 1099 | dwc_event_ep_event_id_t event_id = DWC_EVENT_EP_EVENT_ID(*event); |
| 1100 | uint8_t event_status = DWC_EVENT_EP_EVENT_STATUS(*event); |
| 1101 | |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 1102 | ASSERT(DWC_EP_PHY_TO_INDEX(ep_phy_num) < DWC_MAX_NUM_OF_EP); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1103 | dwc_ep_t *ep = &dev->ep[DWC_EP_PHY_TO_INDEX(ep_phy_num)]; |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 1104 | ASSERT(ep != NULL); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1105 | |
| 1106 | switch (event_id) |
| 1107 | { |
| 1108 | case DWC_EVENT_EP_CMD_COMPLETE: |
| 1109 | { |
| 1110 | dwc_dep_cmd_id_t cmd = DWC_EVENT_EP_EVENT_CMD_TYPE(*event); |
| 1111 | |
| 1112 | if (cmd == DEPCMD_CMD_START_TRANSFER) |
| 1113 | { |
| 1114 | /* something wrong with fsm. cannot happen in any other ep state.*/ |
| 1115 | ASSERT(ep->state == EP_STATE_START_TRANSFER); |
| 1116 | |
| 1117 | ASSERT(event_status == 0); |
| 1118 | |
| 1119 | /* save the resource id assigned to this ep. */ |
| 1120 | ep->state = EP_STATE_XFER_IN_PROG; |
| 1121 | ep->resource_idx = DWC_EVENT_EP_EVENT_XFER_RES_IDX(*event); |
| 1122 | } |
| 1123 | else |
| 1124 | { |
| 1125 | DBG("\n cmd = %s has no action. ignored.", cmd_lookup[cmd]); |
| 1126 | } |
| 1127 | } |
| 1128 | break; |
| 1129 | case DWC_EVENT_EP_XFER_COMPLETE: |
| 1130 | { |
| 1131 | uint32_t bytes_remaining; |
| 1132 | uint8_t status; |
| 1133 | |
| 1134 | /* should never happen in any other state. |
| 1135 | * something wrong in fsm implementation. |
| 1136 | */ |
| 1137 | ASSERT(ep->state == EP_STATE_XFER_IN_PROG); |
| 1138 | |
| 1139 | ep->state = EP_STATE_INACTIVE; |
| 1140 | |
| 1141 | /* check transfer status */ |
| 1142 | status = dwc_event_check_trb_status(dev, |
| 1143 | event, |
| 1144 | DWC_EP_PHY_TO_INDEX(ep_phy_num), |
| 1145 | &bytes_remaining); |
| 1146 | |
| 1147 | if (status || bytes_remaining) |
| 1148 | { |
| 1149 | DBG("\n\n ******** TRANSFER FAILED ************* status =" |
| 1150 | " %d bytes_remaining = %d\n\n", status, bytes_remaining); |
| 1151 | |
| 1152 | /* data stage failed. */ |
| 1153 | dwc_ep_cmd_stall(dev, ep_phy_num); |
| 1154 | |
| 1155 | /* move to stall state. */ |
| 1156 | dev->ctrl_state = EP_FSM_STALL; |
| 1157 | } |
| 1158 | else |
| 1159 | { |
| 1160 | dwc_ep_ctrl_state_setup_enter(dev); |
| 1161 | } |
| 1162 | } |
| 1163 | break; |
| 1164 | case DWC_EVENT_EP_XFER_NOT_READY: |
| 1165 | case DWC_EVENT_EP_XFER_IN_PROGRESS: |
| 1166 | default: |
| 1167 | /* event is not expected in this state */ |
Channagoud Kadabi | 9ac7246 | 2014-04-15 15:29:41 -0700 | [diff] [blame] | 1168 | ERR("\n Ignore the unexpected EP event: %s\n", event_lookup_ep[event_id]); |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 1169 | dwc_print_ep_event_details(dev, event); |
| 1170 | dwc_print_current_state(dev); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1171 | } |
| 1172 | } |
| 1173 | |
| 1174 | /* handle all events occurring in stall state */ |
| 1175 | static void dwc_event_handler_ep_ctrl_state_stall(dwc_dev_t *dev, |
| 1176 | uint32_t *event) |
| 1177 | { |
| 1178 | uint8_t ep_phy_num = DWC_EVENT_EP_EVENT_EP_NUM(*event); |
| 1179 | dwc_event_ep_event_id_t event_id = DWC_EVENT_EP_EVENT_ID(*event); |
| 1180 | |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 1181 | ASSERT(DWC_EP_PHY_TO_INDEX(ep_phy_num) < DWC_MAX_NUM_OF_EP); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1182 | dwc_ep_t *ep = &dev->ep[DWC_EP_PHY_TO_INDEX(ep_phy_num)]; |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 1183 | ASSERT(ep != NULL); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1184 | |
| 1185 | switch (event_id) |
| 1186 | { |
| 1187 | case DWC_EVENT_EP_CMD_COMPLETE: |
| 1188 | { |
| 1189 | dwc_dep_cmd_id_t cmd = DWC_EVENT_EP_EVENT_CMD_TYPE(*event); |
| 1190 | |
| 1191 | if (cmd == DEPCMD_CMD_SET_STALL) |
| 1192 | { |
| 1193 | /* stall complete. go back to setup state. */ |
| 1194 | dwc_ep_ctrl_state_setup_enter(dev); |
| 1195 | } |
| 1196 | else if (cmd == DEPCMD_CMD_END_TRANSFER) |
| 1197 | { |
| 1198 | /* reset state and resource index */ |
| 1199 | ep->state = EP_STATE_INACTIVE; |
| 1200 | ep->resource_idx = 0; |
| 1201 | } |
| 1202 | else |
| 1203 | { |
| 1204 | DBG("\n cmd = %s has no action. ignored.", cmd_lookup[cmd]); |
| 1205 | } |
| 1206 | } |
| 1207 | break; |
| 1208 | default: |
| 1209 | DBG("\n\n ********No Action defined for this event. ignored. \n\n"); |
| 1210 | break; |
| 1211 | } |
| 1212 | } |
| 1213 | |
| 1214 | /* event handler for INACTIVE state of bulk endpoint */ |
| 1215 | static void dwc_event_handler_ep_bulk_state_inactive(dwc_dev_t *dev, |
| 1216 | uint32_t *event) |
| 1217 | { |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1218 | dwc_event_ep_event_id_t event_id = DWC_EVENT_EP_EVENT_ID(*event); |
Channagoud Kadabi | 42f54da | 2015-06-24 12:53:30 -0700 | [diff] [blame] | 1219 | #ifdef DEBUG_USB |
| 1220 | uint8_t ep_phy_num = DWC_EVENT_EP_EVENT_EP_NUM(*event); |
| 1221 | #endif |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1222 | |
| 1223 | switch (event_id) |
| 1224 | { |
| 1225 | case DWC_EVENT_EP_CMD_COMPLETE: |
| 1226 | { |
Veera Sundaram Sankaran | 0018151 | 2014-12-09 11:23:39 -0800 | [diff] [blame] | 1227 | DBG("\n cmd = %s has no action. ignored.", |
| 1228 | cmd_lookup[DWC_EVENT_EP_EVENT_CMD_TYPE(*event)]); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1229 | } |
| 1230 | break; |
| 1231 | case DWC_EVENT_EP_XFER_NOT_READY: |
| 1232 | { |
| 1233 | /* This is a valid scenario where host is requesting data and |
| 1234 | * our client has not queued the request yet. |
| 1235 | */ |
| 1236 | DBG("\n Host requested data on ep_phy_num = %d. " |
| 1237 | "No action. ignored.", ep_phy_num); |
| 1238 | } |
| 1239 | break; |
| 1240 | case DWC_EVENT_EP_XFER_IN_PROGRESS: |
| 1241 | case DWC_EVENT_EP_XFER_COMPLETE: |
| 1242 | default: |
| 1243 | /* event is not expected in this state */ |
Channagoud Kadabi | 9ac7246 | 2014-04-15 15:29:41 -0700 | [diff] [blame] | 1244 | ERR("\n Ignore the unexpected EP event: %s\n", event_lookup_ep[event_id]); |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 1245 | dwc_print_ep_event_details(dev, event); |
| 1246 | dwc_print_current_state(dev); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1247 | } |
| 1248 | } |
| 1249 | |
| 1250 | /* event handler for START_TRANSFER state of bulk endpoint */ |
| 1251 | static void dwc_event_handler_ep_bulk_state_start_transfer(dwc_dev_t *dev, |
| 1252 | uint32_t *event) |
| 1253 | { |
| 1254 | uint8_t ep_phy_num = DWC_EVENT_EP_EVENT_EP_NUM(*event); |
| 1255 | dwc_event_ep_event_id_t event_id = DWC_EVENT_EP_EVENT_ID(*event); |
| 1256 | uint8_t event_status = DWC_EVENT_EP_EVENT_STATUS(*event); |
| 1257 | |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 1258 | ASSERT(DWC_EP_PHY_TO_INDEX(ep_phy_num) < DWC_MAX_NUM_OF_EP); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1259 | dwc_ep_t *ep = &dev->ep[DWC_EP_PHY_TO_INDEX(ep_phy_num)]; |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 1260 | ASSERT(ep != NULL); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1261 | |
| 1262 | switch (event_id) |
| 1263 | { |
| 1264 | case DWC_EVENT_EP_CMD_COMPLETE: |
| 1265 | { |
| 1266 | dwc_dep_cmd_id_t cmd = DWC_EVENT_EP_EVENT_CMD_TYPE(*event); |
| 1267 | |
| 1268 | if (cmd == DEPCMD_CMD_START_TRANSFER) |
| 1269 | { |
| 1270 | if (event_status == 0) |
| 1271 | { |
| 1272 | /* save the resource id assigned to this ep. */ |
| 1273 | ep->state = EP_STATE_XFER_IN_PROG; |
| 1274 | ep->resource_idx = DWC_EVENT_EP_EVENT_XFER_RES_IDX(*event); |
| 1275 | } |
| 1276 | else |
| 1277 | { |
| 1278 | /* start transfer failed. inform client */ |
| 1279 | if (ep->req.callback) |
| 1280 | { |
| 1281 | ep->req.callback(ep->req.context, 0, -1); |
| 1282 | } |
| 1283 | |
| 1284 | /* back to inactive state */ |
| 1285 | dwc_ep_bulk_state_inactive_enter(dev, ep_phy_num); |
| 1286 | } |
| 1287 | } |
| 1288 | else |
| 1289 | { |
| 1290 | DBG("\n cmd = %s has no action. ignored.\n", cmd_lookup[cmd]); |
| 1291 | } |
| 1292 | } |
| 1293 | break; |
| 1294 | default: |
Channagoud Kadabi | 9ac7246 | 2014-04-15 15:29:41 -0700 | [diff] [blame] | 1295 | ERR("\n Ignore the unexpected EP event: %s\n", event_lookup_ep[event_id]); |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 1296 | dwc_print_ep_event_details(dev, event); |
| 1297 | dwc_print_current_state(dev); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1298 | } |
| 1299 | } |
| 1300 | |
| 1301 | /* event handler for TRANSFER_IN_PROGRESS state of bulk endpoint */ |
| 1302 | static void dwc_event_handler_ep_bulk_state_xfer_in_prog(dwc_dev_t *dev, |
| 1303 | uint32_t *event) |
| 1304 | { |
| 1305 | uint8_t ep_phy_num = DWC_EVENT_EP_EVENT_EP_NUM(*event); |
| 1306 | dwc_event_ep_event_id_t event_id = DWC_EVENT_EP_EVENT_ID(*event); |
| 1307 | |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 1308 | ASSERT(DWC_EP_PHY_TO_INDEX(ep_phy_num) < DWC_MAX_NUM_OF_EP); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1309 | dwc_ep_t *ep = &dev->ep[DWC_EP_PHY_TO_INDEX(ep_phy_num)]; |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 1310 | ASSERT(ep != NULL); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1311 | |
| 1312 | switch (event_id) |
| 1313 | { |
| 1314 | case DWC_EVENT_EP_CMD_COMPLETE: |
| 1315 | { |
| 1316 | dwc_dep_cmd_id_t cmd = DWC_EVENT_EP_EVENT_CMD_TYPE(*event); |
| 1317 | |
| 1318 | if (cmd == DEPCMD_CMD_END_TRANSFER) |
| 1319 | { |
| 1320 | /* transfer was cancelled for some reason. */ |
| 1321 | DBG("\n transfer was cancelled on ep_phy_num = %d\n", ep_phy_num); |
| 1322 | |
| 1323 | /* inform client that transfer failed. */ |
| 1324 | if (ep->req.callback) |
| 1325 | { |
| 1326 | ep->req.callback(ep->req.context, 0, -1); |
| 1327 | } |
| 1328 | |
| 1329 | /* back to inactive state */ |
| 1330 | dwc_ep_bulk_state_inactive_enter(dev, ep_phy_num); |
| 1331 | } |
| 1332 | else |
| 1333 | { |
| 1334 | DBG("\n cmd = %s has no action. ignored.\n", cmd_lookup[cmd]); |
| 1335 | } |
| 1336 | } |
| 1337 | break; |
| 1338 | case DWC_EVENT_EP_XFER_NOT_READY: |
| 1339 | { |
| 1340 | /* This is a valid scenario where host is requesting data and |
| 1341 | * we have not yet moved to start transfer state. |
| 1342 | */ |
| 1343 | DBG("\n Host requested data on ep_phy_num = %d." |
| 1344 | "No action. ignored.", ep_phy_num); |
| 1345 | } |
| 1346 | break; |
| 1347 | case DWC_EVENT_EP_XFER_COMPLETE: |
| 1348 | { |
| 1349 | uint32_t bytes_remaining; |
| 1350 | uint8_t status; |
| 1351 | |
| 1352 | /* Check how many TRBs were processed and how much data got |
| 1353 | * transferred. If there are bytes_remaining, it does not |
| 1354 | * necessarily mean failed xfer. We could have queued a 512 byte |
| 1355 | * read and receive say 13 bytes of data which is a valid scenario. |
| 1356 | */ |
| 1357 | status = dwc_event_check_trb_status(dev, |
| 1358 | event, |
| 1359 | DWC_EP_PHY_TO_INDEX(ep_phy_num), |
| 1360 | &bytes_remaining); |
| 1361 | |
| 1362 | DBG("\n\n ******DATA TRANSFER COMPLETED (ep_phy_num = %d) ********" |
| 1363 | "bytes_remaining = %d\n\n", ep_phy_num, bytes_remaining); |
| 1364 | |
| 1365 | if (ep->req.callback) |
| 1366 | { |
| 1367 | ep->req.callback(ep->req.context, |
| 1368 | ep->bytes_queued - bytes_remaining, |
| 1369 | status ? -1 : 0); |
| 1370 | } |
| 1371 | |
| 1372 | dwc_ep_bulk_state_inactive_enter(dev, ep_phy_num); |
| 1373 | } |
| 1374 | break; |
| 1375 | default: |
Channagoud Kadabi | 9ac7246 | 2014-04-15 15:29:41 -0700 | [diff] [blame] | 1376 | ERR("\n Ignore the unexpected EP event: %s\n", event_lookup_ep[event_id]); |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 1377 | dwc_print_ep_event_details(dev, event); |
| 1378 | dwc_print_current_state(dev); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1379 | } |
| 1380 | } |
| 1381 | |
| 1382 | /* bulk endpoint event handler */ |
| 1383 | void dwc_event_handler_ep_bulk(dwc_dev_t *dev, uint32_t *event) |
| 1384 | { |
| 1385 | uint8_t ep_phy_num = DWC_EVENT_EP_EVENT_EP_NUM(*event); |
| 1386 | #ifdef DEBUG_USB |
| 1387 | dwc_event_ep_event_id_t event_id = DWC_EVENT_EP_EVENT_ID(*event); |
| 1388 | uint8_t event_status = DWC_EVENT_EP_EVENT_STATUS(*event); |
| 1389 | uint16_t event_param = DWC_EVENT_EP_EVENT_PARAM(*event); |
| 1390 | #endif |
| 1391 | |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 1392 | ASSERT(DWC_EP_PHY_TO_INDEX(ep_phy_num) < DWC_MAX_NUM_OF_EP); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1393 | dwc_ep_t *ep = &dev->ep[DWC_EP_PHY_TO_INDEX(ep_phy_num)]; |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 1394 | ASSERT(ep != NULL); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1395 | |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 1396 | #ifdef DEBUG_USB |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1397 | DBG("\n\n\n++EP_EVENT: %s in ctrl_state: %s ep_state[%d]: %s", |
| 1398 | event_lookup_ep[event_id], |
| 1399 | dev_ctrl_state_lookup[dev->ctrl_state], |
| 1400 | ep_phy_num, |
| 1401 | ep_state_lookup[ep->state]); |
| 1402 | |
| 1403 | DBG("\n ep_phy_num = %d param = 0x%x status = 0x%x", |
| 1404 | ep_phy_num, event_param, event_status); |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 1405 | #endif |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1406 | |
| 1407 | switch (ep->state) |
| 1408 | { |
| 1409 | case EP_STATE_INACTIVE: |
| 1410 | { |
| 1411 | dwc_event_handler_ep_bulk_state_inactive(dev, event); |
| 1412 | } |
| 1413 | break; |
| 1414 | case EP_STATE_START_TRANSFER: |
| 1415 | { |
| 1416 | dwc_event_handler_ep_bulk_state_start_transfer(dev, event); |
| 1417 | } |
| 1418 | break; |
| 1419 | case EP_STATE_XFER_IN_PROG: |
| 1420 | { |
| 1421 | dwc_event_handler_ep_bulk_state_xfer_in_prog(dev, event); |
| 1422 | } |
| 1423 | break; |
| 1424 | default: |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 1425 | ERR("\n EP state is invalid. Asserting...\n"); |
| 1426 | dwc_print_ep_event_details(dev, event); |
| 1427 | dwc_print_current_state(dev); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1428 | ASSERT(0); |
| 1429 | } |
| 1430 | |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 1431 | #ifdef DEBUG_USB |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1432 | DBG("\n--EP_EVENT: %s in ctrl_state: %s ep_state[%d]: %s", |
| 1433 | event_lookup_ep[event_id], |
| 1434 | dev_ctrl_state_lookup[dev->ctrl_state], |
| 1435 | ep_phy_num, |
| 1436 | ep_state_lookup[ep->state]); |
Lijuan Gao | e2568e5 | 2014-07-24 15:23:18 +0800 | [diff] [blame] | 1437 | #endif |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1438 | } |
| 1439 | |
| 1440 | |
| 1441 | |
| 1442 | |
| 1443 | /******************** Endpoint related APIs **********************************/ |
| 1444 | |
| 1445 | /* Initialize and enable EP: |
| 1446 | * - set the initial configuration for an endpoint |
| 1447 | * - set transfer resources |
| 1448 | * - enable the endpoint |
| 1449 | */ |
| 1450 | static void dwc_ep_config_init_enable(dwc_dev_t *dev, uint8_t index) |
| 1451 | { |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 1452 | ASSERT(index < DWC_MAX_NUM_OF_EP); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1453 | uint8_t ep_phy_num = dev->ep[index].phy_num; |
| 1454 | |
| 1455 | dwc_ep_cmd_set_config(dev, index, SET_CONFIG_ACTION_INIT); |
| 1456 | |
| 1457 | dev->ep[index].state = EP_STATE_INACTIVE; |
| 1458 | |
| 1459 | /* Set transfer resource configs for the end points */ |
| 1460 | dwc_ep_cmd_set_transfer_resource(dev, ep_phy_num); |
| 1461 | |
| 1462 | /* enable endpoint */ |
| 1463 | dwc_ep_enable(dev, ep_phy_num); |
| 1464 | } |
| 1465 | |
| 1466 | /* Initialize control EPs: |
| 1467 | * Do the one time initialization of control EPs |
| 1468 | */ |
| 1469 | static void dwc_ep_ctrl_init(dwc_dev_t *dev) |
| 1470 | { |
| 1471 | uint8_t index; |
| 1472 | |
| 1473 | /* Control OUT */ |
| 1474 | index = DWC_EP_INDEX(0, DWC_EP_DIRECTION_OUT); |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 1475 | ASSERT(index < DWC_MAX_NUM_OF_EP); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1476 | |
| 1477 | dev->ep[index].number = 0; |
| 1478 | dev->ep[index].dir = DWC_EP_DIRECTION_OUT; |
| 1479 | dev->ep[index].phy_num = 0; |
| 1480 | dev->ep[index].type = EP_TYPE_CONTROL; |
| 1481 | dev->ep[index].state = EP_STATE_INIT; |
| 1482 | dev->ep[index].max_pkt_size = 512; |
| 1483 | dev->ep[index].burst_size = 0; |
| 1484 | dev->ep[index].tx_fifo_num = 0; |
| 1485 | dev->ep[index].zlp = 0; |
| 1486 | dev->ep[index].trb_count = 1; |
| 1487 | /* TRB must be aligned to 16 */ |
| 1488 | dev->ep[index].trb = memalign(lcm(CACHE_LINE, 16), |
| 1489 | ROUNDUP(dev->ep[index].trb_count*sizeof(dwc_trb_t), CACHE_LINE)); |
| 1490 | ASSERT(dev->ep[index].trb); |
| 1491 | dev->ep[index].trb_queued = 0; |
| 1492 | dev->ep[index].bytes_queued = 0; |
| 1493 | |
| 1494 | /* Control IN */ |
Channagoud Kadabi | 50a17d0 | 2013-10-24 16:55:39 -0700 | [diff] [blame] | 1495 | index = DWC_EP_INDEX(0, DWC_EP_DIRECTION_IN); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1496 | |
| 1497 | dev->ep[index].number = 0; |
| 1498 | dev->ep[index].dir = DWC_EP_DIRECTION_IN; |
| 1499 | dev->ep[index].phy_num = 1; |
| 1500 | dev->ep[index].type = EP_TYPE_CONTROL; |
| 1501 | dev->ep[index].state = EP_STATE_INIT; |
| 1502 | dev->ep[index].max_pkt_size = 512; |
| 1503 | dev->ep[index].burst_size = 0; |
| 1504 | dev->ep[index].tx_fifo_num = 0; |
| 1505 | dev->ep[index].zlp = 0; |
| 1506 | dev->ep[index].trb_count = 1; |
| 1507 | /* TRB must be aligned to 16 */ |
| 1508 | dev->ep[index].trb = memalign(lcm(CACHE_LINE, 16), |
| 1509 | ROUNDUP(dev->ep[index].trb_count*sizeof(dwc_trb_t), CACHE_LINE)); |
| 1510 | ASSERT(dev->ep[index].trb); |
| 1511 | dev->ep[index].trb_queued = 0; |
| 1512 | dev->ep[index].bytes_queued = 0; |
| 1513 | |
| 1514 | /* configure and enable the endpoints */ |
| 1515 | dwc_ep_config_init_enable(dev, 0); |
| 1516 | dwc_ep_config_init_enable(dev, 1); |
| 1517 | } |
| 1518 | |
| 1519 | |
| 1520 | /* entry function into setup state for control fsm */ |
| 1521 | static void dwc_ep_ctrl_state_setup_enter(dwc_dev_t *dev) |
| 1522 | { |
| 1523 | dwc_request_t req; |
| 1524 | |
| 1525 | /* queue request to receive the first setup pkt from host */ |
| 1526 | memset(dev->setup_pkt, 0, DWC_SETUP_PKT_LEN); |
| 1527 | |
| 1528 | /* flush data */ |
| 1529 | arch_clean_invalidate_cache_range((addr_t) dev->setup_pkt, DWC_SETUP_PKT_LEN); |
| 1530 | |
| 1531 | req.data = dev->setup_pkt; |
| 1532 | req.len = DWC_SETUP_PKT_LEN; |
| 1533 | req.trbctl = TRBCTL_CONTROL_SETUP; |
| 1534 | req.callback = NULL; |
| 1535 | req.context = NULL; |
| 1536 | |
| 1537 | dwc_request_queue(dev, 0, &req); |
| 1538 | |
| 1539 | /* reset control ep state to "setup" state */ |
| 1540 | dev->ctrl_state = EP_FSM_SETUP; |
| 1541 | } |
| 1542 | |
| 1543 | /* entry function into inactive state for data transfer fsm */ |
| 1544 | static void dwc_ep_bulk_state_inactive_enter(dwc_dev_t *dev, uint8_t ep_phy_num) |
| 1545 | { |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 1546 | ASSERT(DWC_EP_PHY_TO_INDEX(ep_phy_num) < DWC_MAX_NUM_OF_EP); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1547 | dwc_ep_t *ep = &dev->ep[DWC_EP_PHY_TO_INDEX(ep_phy_num)]; |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 1548 | ASSERT(ep != NULL); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1549 | |
| 1550 | /* queue request to receive the first setup pkt from host */ |
| 1551 | ep->req.data = NULL; |
| 1552 | ep->req.len = 0; |
| 1553 | ep->req.trbctl = 0; |
| 1554 | ep->req.callback = NULL; |
| 1555 | ep->req.context = NULL; |
| 1556 | |
| 1557 | /* inactive state */ |
| 1558 | ep->state = EP_STATE_INACTIVE; |
| 1559 | |
| 1560 | /* reset the resource index, trb and bytes queued */ |
| 1561 | ep->resource_idx = 0; |
| 1562 | ep->trb_queued = 0; |
| 1563 | ep->bytes_queued = 0; |
| 1564 | } |
| 1565 | |
| 1566 | /*************************** External APIs ************************************/ |
| 1567 | |
| 1568 | /* Initialize controller for device mode operation. |
| 1569 | * Implements sequence as described in HPG. |
| 1570 | * Numbers indicate the step # in HPG. |
| 1571 | */ |
| 1572 | void dwc_device_init(dwc_dev_t *dev) |
| 1573 | { |
| 1574 | /* 15. reset device ctrl. */ |
| 1575 | dwc_device_reset(dev); |
| 1576 | |
| 1577 | /* 16. initialize global control reg for device mode operation */ |
| 1578 | dwc_gctl_init(dev); |
| 1579 | |
| 1580 | /* 17. AXI master config */ |
| 1581 | dwc_axi_master_config(dev); |
| 1582 | |
| 1583 | /* 18. */ |
| 1584 | /* a. tx fifo config */ |
| 1585 | /* reset value is good. */ |
| 1586 | /* b. rx fifo config */ |
| 1587 | /* reset value is good. */ |
| 1588 | |
| 1589 | /* 18.c */ |
| 1590 | dwc_event_init(dev); |
| 1591 | |
| 1592 | /* 18.d */ |
| 1593 | /* enable device event generation */ |
| 1594 | dwc_event_device_enable(dev, BIT(DWC_EVENT_DEVICE_EVENT_ID_DISCONNECT) | |
| 1595 | BIT(DWC_EVENT_DEVICE_EVENT_ID_USB_RESET) | |
Channagoud Kadabi | 8bc768e | 2015-01-27 11:40:51 -0800 | [diff] [blame] | 1596 | BIT(DWC_EVENT_DEVICE_EVENT_ID_SUSPEND_ENTRY) | |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1597 | BIT(DWC_EVENT_DEVICE_EVENT_ID_CONNECT_DONE)); |
| 1598 | |
| 1599 | /* 18.e initialize control end point |
| 1600 | * start new config on end point 0. only needed for ep0. |
| 1601 | * resource index must be set to 0. |
| 1602 | */ |
| 1603 | dwc_ep_cmd_start_new_config(dev, 0, 0); |
| 1604 | |
| 1605 | /* steps described in snps 8.1 */ |
| 1606 | dwc_ep_ctrl_init(dev); |
| 1607 | |
| 1608 | /* Unmask interrupts */ |
| 1609 | unmask_interrupt(USB30_EE1_IRQ); |
| 1610 | |
| 1611 | /* start the control ep fsm */ |
| 1612 | dwc_ep_ctrl_state_setup_enter(dev); |
| 1613 | } |
| 1614 | |
| 1615 | /* add a new non-control endpoint belonging to the selected USB configuration. |
| 1616 | * This is called when "set config" setup is received from host. |
| 1617 | * udc layer first adds the endpoints which are part of the selected |
| 1618 | * configuration by calling this api. |
| 1619 | * Then it calls dwc_device_set_configuration() to enable that configuration. |
| 1620 | * TODO: need better api to manage this. possibly a single api to do both. |
| 1621 | * also, currently this only works as long as same configuration is selected |
| 1622 | * every time. The cleanup during usb reset is not cleanly removing the |
| 1623 | * endpoints added during a set config. This works fine for our usecase. |
| 1624 | */ |
Sundarajan Srinivasan | 1c42191 | 2014-03-31 17:55:31 -0700 | [diff] [blame] | 1625 | void dwc_device_add_ep(dwc_dev_t *dev, dwc_ep_t *new_ep) |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1626 | { |
Sundarajan Srinivasan | 1c42191 | 2014-03-31 17:55:31 -0700 | [diff] [blame] | 1627 | uint8_t index = DWC_EP_INDEX(new_ep->number, new_ep->dir); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1628 | |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 1629 | ASSERT(index < DWC_MAX_NUM_OF_EP); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1630 | dwc_ep_t *ep = &dev->ep[index]; |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 1631 | ASSERT(ep != NULL); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1632 | |
| 1633 | memset(ep, 0, sizeof(ep)); |
| 1634 | |
| 1635 | /* copy client specified params */ |
| 1636 | |
Sundarajan Srinivasan | 1c42191 | 2014-03-31 17:55:31 -0700 | [diff] [blame] | 1637 | ep->number = new_ep->number; |
| 1638 | ep->dir = new_ep->dir; |
| 1639 | ep->type = new_ep->type; |
| 1640 | ep->max_pkt_size = new_ep->max_pkt_size; |
| 1641 | ep->burst_size = new_ep->burst_size; |
| 1642 | ep->zlp = new_ep->zlp; |
| 1643 | ep->trb_count = new_ep->trb_count; |
| 1644 | ep->trb = new_ep->trb; |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1645 | |
| 1646 | ASSERT(ep->trb); |
| 1647 | |
| 1648 | /* clear out trb memory space. */ |
| 1649 | memset(ep->trb, 0, (ep->trb_count)*sizeof(ep->trb)); |
| 1650 | arch_clean_invalidate_cache_range((addr_t) ep->trb, |
| 1651 | (ep->trb_count)*sizeof(ep->trb)); |
| 1652 | |
| 1653 | /* initialize dwc specified params */ |
| 1654 | |
| 1655 | /* map this usb ep to the next available phy ep. |
| 1656 | * we assume non-flexible endpoint mapping. |
| 1657 | * so the physical ep number is same as the index into our EP array. |
| 1658 | */ |
| 1659 | ep->phy_num = index; |
| 1660 | |
| 1661 | if (ep->dir == DWC_EP_DIRECTION_IN) |
| 1662 | { |
| 1663 | /* TODO: this works only as long as we just one IN EP (non-control). |
| 1664 | * Need to increment this for every new IN ep added. |
| 1665 | */ |
| 1666 | ep->tx_fifo_num = 1; |
| 1667 | } |
| 1668 | else |
| 1669 | { |
| 1670 | ep->tx_fifo_num = 0; /* tx fifo num must be 0 for OUT ep */ |
| 1671 | } |
| 1672 | |
| 1673 | ep->trb_queued = 0; |
| 1674 | ep->bytes_queued = 0; |
| 1675 | ep->resource_idx = 0; |
| 1676 | ep->state = EP_STATE_INIT; |
| 1677 | } |
| 1678 | |
| 1679 | /* Configure and enable non-control endpoints: |
| 1680 | * This is called when "set config" setup is received from host. |
| 1681 | * Implements sequence as described in snps databook 8.1.5. |
| 1682 | */ |
| 1683 | void dwc_device_set_configuration(dwc_dev_t *dev) |
| 1684 | { |
| 1685 | /* disable every ep other than control EPs */ |
| 1686 | dwc_ep_disable_non_control(dev); |
| 1687 | |
| 1688 | /* re-initialize TX FIFO by sending set config cmd to ep-1 */ |
| 1689 | dwc_ep_cmd_set_config(dev, 1, SET_CONFIG_ACTION_MODIFY); |
| 1690 | |
| 1691 | /* re-initialize transfer resource allocation: |
| 1692 | * only needed for ep0. |
| 1693 | * resource index must be set to 2 when doing set config |
| 1694 | */ |
| 1695 | dwc_ep_cmd_start_new_config(dev, 0, 2); |
| 1696 | |
| 1697 | /* Initialize config for each non-control EP in the new configuration */ |
| 1698 | for (uint8_t ep_index = 2; ep_index < DWC_MAX_NUM_OF_EP; ep_index++) |
| 1699 | { |
| 1700 | /* non-zero phy ep num indicates that this ep data is initialized |
| 1701 | * and ready for use. |
| 1702 | */ |
| 1703 | if (dev->ep[ep_index].phy_num) |
| 1704 | { |
| 1705 | dwc_ep_config_init_enable(dev, ep_index); |
| 1706 | } |
| 1707 | } |
| 1708 | |
| 1709 | /* optional: re-initialize tx FIFO : GTXFIFOSIZn*/ |
| 1710 | } |
| 1711 | |
| 1712 | /* Enqueue new data transfer request on an endpoint. */ |
| 1713 | static int dwc_request_queue(dwc_dev_t *dev, |
| 1714 | uint8_t ep_phy_num, |
| 1715 | dwc_request_t *req) |
| 1716 | { |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 1717 | ASSERT(DWC_EP_PHY_TO_INDEX(ep_phy_num) < DWC_MAX_NUM_OF_EP); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1718 | dwc_ep_t *ep = &dev->ep[DWC_EP_PHY_TO_INDEX(ep_phy_num)]; |
Lijuan Gao | 4e0ddbe | 2014-09-24 15:41:05 +0800 | [diff] [blame] | 1719 | ASSERT(ep != NULL); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1720 | |
| 1721 | dwc_trb_t *trb = ep->trb; |
| 1722 | uint8_t *data_ptr = req->data; |
| 1723 | uint32_t transfer_len = req->len; |
| 1724 | dwc_trb_trbctl_t trbctl = req->trbctl; |
| 1725 | |
| 1726 | uint32_t pad_len; |
| 1727 | |
| 1728 | if(ep->state != EP_STATE_INACTIVE) |
| 1729 | { |
| 1730 | DBG("\n EP must be in INACTIVE state to start queue transfer. ep_phy_num = %d current state = %s", |
| 1731 | ep_phy_num, ep_state_lookup[ep->state]); |
| 1732 | return -1; |
| 1733 | } |
| 1734 | |
| 1735 | /* trb queued must be 0 at this time. */ |
| 1736 | ASSERT(ep->trb_queued == 0); |
| 1737 | |
| 1738 | /* save the original request for this ep */ |
| 1739 | ep->req = *req; |
| 1740 | |
| 1741 | ep->bytes_queued = 0; |
| 1742 | |
Channagoud Kadabi | 5f8f1c4 | 2015-03-25 14:35:05 -0700 | [diff] [blame] | 1743 | if (ep->type == EP_TYPE_CONTROL || ep->type == EP_TYPE_INTERRUPT) |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1744 | { |
| 1745 | memset(trb, 0, sizeof(dwc_trb_t)); |
| 1746 | |
| 1747 | REG_WRITE_FIELD_LOCAL(&trb->f1, TRB_F1, PTR_LOW, (uint32_t) data_ptr); |
| 1748 | REG_WRITE_FIELD_LOCAL(&trb->f2, TRB_F2, PTR_HIGH, 0x0); |
| 1749 | REG_WRITE_FIELD_LOCAL(&trb->f3, TRB_F3, BUFSIZ, transfer_len); |
| 1750 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, LST, 0x1); |
| 1751 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, CHN, 0x0); |
| 1752 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, CSP, 0x0); |
| 1753 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, TRBCTL, trbctl); |
| 1754 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, IOC, 0x1); |
| 1755 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, HWO, 0x1); |
| 1756 | |
| 1757 | /* increment the queued trb count */ |
| 1758 | ep->trb_queued++; |
| 1759 | ep->bytes_queued += transfer_len; |
| 1760 | data_ptr += transfer_len; |
| 1761 | } |
| 1762 | else if (ep->type == EP_TYPE_BULK) |
| 1763 | { |
| 1764 | /* reserve 1 trb for pad/zero-length pkt */ |
| 1765 | uint32_t trb_available = ep->trb_count - 1; |
| 1766 | uint32_t max_bytes_per_trb; |
| 1767 | uint32_t offset; |
| 1768 | uint32_t trb_len = 0; |
| 1769 | |
| 1770 | /* snps 7.2 table 7-1. applies only to older versions of the controller: |
| 1771 | * - data_ptr in first TRB can be aligned to byte |
| 1772 | * - but the following TRBs should point to data that is aligned |
| 1773 | * to master bus data width. |
| 1774 | */ |
| 1775 | |
| 1776 | /* align default MAX_BYTES_PER_TRB to DWC_MASTER_BUS_WIDTH */ |
| 1777 | max_bytes_per_trb = ROUNDDOWN(DWC_MAX_BYTES_PER_TRB, DWC_MASTER_BUS_WIDTH); |
| 1778 | |
| 1779 | while (trb_available && transfer_len) |
| 1780 | { |
| 1781 | /* clear out trb fields */ |
| 1782 | memset(trb, 0, sizeof(dwc_trb_t)); |
| 1783 | |
| 1784 | if (ep->trb_queued == 0) |
| 1785 | { |
| 1786 | /* first trb: limit the transfer length in this TRB such that |
| 1787 | * the next trb data_ptr will be aligned to master bus width. |
| 1788 | */ |
| 1789 | offset = ((uint32_t) data_ptr) & (DWC_MASTER_BUS_WIDTH - 1); |
| 1790 | trb_len = (transfer_len <= max_bytes_per_trb) ? |
| 1791 | transfer_len : (max_bytes_per_trb - offset); |
| 1792 | } |
| 1793 | else |
| 1794 | { |
| 1795 | trb_len = (transfer_len <= max_bytes_per_trb) ? |
| 1796 | transfer_len : max_bytes_per_trb; |
| 1797 | } |
| 1798 | |
| 1799 | REG_WRITE_FIELD_LOCAL(&trb->f1, TRB_F1, PTR_LOW, (uint32_t) data_ptr); |
| 1800 | REG_WRITE_FIELD_LOCAL(&trb->f2, TRB_F2, PTR_HIGH, 0x0); |
| 1801 | REG_WRITE_FIELD_LOCAL(&trb->f3, TRB_F3, BUFSIZ, trb_len); |
| 1802 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, LST, 0x0); |
| 1803 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, CHN, 0x1); |
| 1804 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, CSP, 0x0); |
| 1805 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, TRBCTL, trbctl); |
| 1806 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, IOC, 0x0); |
| 1807 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, HWO, 0x1); |
| 1808 | |
| 1809 | /* increment the queued trb count */ |
| 1810 | ep->trb_queued++; |
| 1811 | ep->bytes_queued += trb_len; |
| 1812 | data_ptr += trb_len; |
| 1813 | |
| 1814 | /* remaining transfer len */ |
| 1815 | transfer_len -= trb_len; |
| 1816 | |
| 1817 | /* remaining trb */ |
| 1818 | trb_available--; |
| 1819 | |
| 1820 | /* point to the next trb */ |
| 1821 | trb++; |
| 1822 | } |
| 1823 | |
| 1824 | if (transfer_len) |
| 1825 | { |
| 1826 | /* TRBs not available to queue the entire request. |
| 1827 | * If more data is expected in each request, increase the number |
| 1828 | * of TRBs allocated for this EP. |
| 1829 | */ |
| 1830 | ERR("\n ERROR: Enough TRBs are not available to setup transfer\n"); |
| 1831 | ERR("\n ERROR: Increase TRB chain for the ep.\n"); |
| 1832 | ERR("\n ERROR: phy_ep_num = %d xfer len = %d\n", ep_phy_num, req->len); |
| 1833 | ASSERT(0); |
| 1834 | } |
| 1835 | |
| 1836 | /* snps 8.2.3.3: |
| 1837 | * For an OUT ep: |
| 1838 | * (a) The "buffer descriptor" must be exact multiple of max_pkt_size |
| 1839 | * "buffer descriptor" consists of one or more TRBs upto the TRB |
| 1840 | * with CHN (chain) flag is not set. |
| 1841 | * Add a TRB to pad the len if it is not exact multiple. |
| 1842 | * |
| 1843 | * (b) If the expected amount of data is exact multiple of max_pkt_size: |
| 1844 | * add a max_pkt_size trb to sink in zero-length pkt, only if |
| 1845 | * the EP expects it. |
| 1846 | */ |
| 1847 | uint32_t roundup = req->len % ep->max_pkt_size; |
| 1848 | |
| 1849 | if ( (ep->dir == DWC_EP_DIRECTION_OUT) && |
| 1850 | (roundup || ep->zlp)) |
| 1851 | { |
| 1852 | if(roundup) |
| 1853 | { |
| 1854 | /* add a TRB to make it exact multiple of max_pkt_size */ |
| 1855 | pad_len = ep->max_pkt_size - roundup; |
| 1856 | } |
| 1857 | else |
| 1858 | { |
| 1859 | /* "buffer descriptor" is exact multiple of max_pkt_size and |
| 1860 | * ep expects a zero-length pkt. |
| 1861 | * Add a TRB to sink in the zero-length pkt. |
| 1862 | */ |
| 1863 | pad_len = ep->max_pkt_size; |
| 1864 | } |
| 1865 | |
| 1866 | memset(trb, 0, sizeof(dwc_trb_t)); |
| 1867 | memset(ep->zlp_buf, 0, DWC_ZLP_BUF_SIZE); |
| 1868 | |
| 1869 | REG_WRITE_FIELD_LOCAL(&trb->f1, TRB_F1, PTR_LOW, (uint32_t) ep->zlp_buf); |
| 1870 | REG_WRITE_FIELD_LOCAL(&trb->f2, TRB_F2, PTR_HIGH, 0x0); |
| 1871 | REG_WRITE_FIELD_LOCAL(&trb->f3, TRB_F3, BUFSIZ, pad_len); |
| 1872 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, LST, 0x1); |
| 1873 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, CHN, 0x0); |
| 1874 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, CSP, 0x0); |
| 1875 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, TRBCTL, trbctl); |
| 1876 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, IOC, 0x1); |
| 1877 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, HWO, 0x1); |
| 1878 | |
| 1879 | /* increment the queued trb count */ |
| 1880 | ep->trb_queued++; |
| 1881 | ep->bytes_queued += pad_len; |
| 1882 | } |
| 1883 | else /* pad trb not needed. */ |
| 1884 | { |
| 1885 | /* point trb to the last programmed trb */ |
| 1886 | trb--; |
| 1887 | |
| 1888 | /* setup params for last TRB */ |
| 1889 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, CHN, 0x0); |
| 1890 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, LST, 0x1); |
| 1891 | REG_WRITE_FIELD_LOCAL(&trb->f4, TRB_F4, IOC, 0x1); |
| 1892 | } |
| 1893 | } |
| 1894 | else |
| 1895 | { |
| 1896 | /* invalid EP type */ |
| 1897 | ASSERT(0); |
| 1898 | } |
| 1899 | |
| 1900 | /* flush the trb data to main memory */ |
| 1901 | arch_clean_invalidate_cache_range((addr_t) ep->trb, |
Maria Yu | 4c12e92 | 2018-05-10 16:18:20 +0800 | [diff] [blame] | 1902 | ROUNDUP(sizeof(dwc_trb_t)*ep->trb_queued, CACHE_LINE)); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1903 | |
| 1904 | DBG("\n Starting new xfer on ep_phy_num = %d TRB_QUEUED = %d \n", |
| 1905 | ep_phy_num, ep->trb_queued); |
| 1906 | |
| 1907 | /* dwc_request_queue could be triggered from app and thus |
| 1908 | * outside of interrupt context. Use critical section to make sure all |
| 1909 | * states are updated properly before we handle other interrupts. |
| 1910 | */ |
| 1911 | enter_critical_section(); |
| 1912 | |
| 1913 | if(ep->state == EP_STATE_INACTIVE) |
| 1914 | { |
| 1915 | dwc_ep_cmd_start_transfer(dev, ep_phy_num); |
| 1916 | |
| 1917 | if(dwc_device_run_status(dev)) |
| 1918 | { |
| 1919 | ep->state = EP_STATE_START_TRANSFER; |
| 1920 | } |
| 1921 | else |
| 1922 | { |
| 1923 | /* no interrupt expected on completion of start transfer. |
| 1924 | * directly move to xfer in prog state. |
| 1925 | */ |
| 1926 | ep->state = EP_STATE_XFER_IN_PROG; |
| 1927 | } |
| 1928 | } |
| 1929 | else |
| 1930 | { |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 1931 | ERR("\n Attempting START_TRANSFER in invalid state: %s. .......\n", |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1932 | ep_state_lookup[ep->state]); |
Amol Jadi | 1133a30 | 2013-10-01 14:45:38 -0700 | [diff] [blame] | 1933 | dwc_print_current_state(dev); |
Amol Jadi | f3d5a89 | 2013-07-23 16:09:44 -0700 | [diff] [blame] | 1934 | ASSERT(0); |
| 1935 | } |
| 1936 | |
| 1937 | exit_critical_section(); |
| 1938 | |
| 1939 | return 0; |
| 1940 | } |
| 1941 | |
| 1942 | /* data transfer request: |
| 1943 | * NOTE: Assumes that the data to be transferred is already in main memory. |
| 1944 | * Any cache management must be done by caller . |
| 1945 | * For received data, cache mgmt must be done in callback function. |
| 1946 | */ |
| 1947 | int dwc_transfer_request(dwc_dev_t *dwc, |
| 1948 | uint8_t usb_ep, |
| 1949 | dwc_ep_direction_t dir, |
| 1950 | void *buf, |
| 1951 | uint32_t len, |
| 1952 | dwc_transfer_callback_t callback, |
| 1953 | void *callback_context) |
| 1954 | { |
| 1955 | uint8_t ep_phy_num; |
| 1956 | dwc_request_t req; |
| 1957 | |
| 1958 | /* map usb ep to physical ep */ |
| 1959 | ep_phy_num = DWC_EP_PHY_NUM(usb_ep, dir); |
| 1960 | |
| 1961 | req.data = buf; |
| 1962 | req.len = len; |
| 1963 | req.callback = callback; |
| 1964 | req.context = callback_context; |
| 1965 | |
| 1966 | if (usb_ep == 0) |
| 1967 | { |
| 1968 | /* control EP always has CONTROL_DATA trb */ |
| 1969 | req.trbctl = TRBCTL_CONTROL_DATA; |
| 1970 | } |
| 1971 | else |
| 1972 | { |
| 1973 | req.trbctl = TRBCTL_NORMAL; |
| 1974 | } |
| 1975 | |
| 1976 | return dwc_request_queue(dwc, ep_phy_num, &req); |
| 1977 | } |