Kévin Redon | 69b92d9 | 2019-01-24 16:39:20 +0100 | [diff] [blame] | 1 | /** |
| 2 | * \file |
| 3 | * |
| 4 | * \brief SAM USB device HAL |
| 5 | * |
| 6 | * Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries. |
| 7 | * |
| 8 | * \asf_license_start |
| 9 | * |
| 10 | * \page License |
| 11 | * |
| 12 | * Subject to your compliance with these terms, you may use Microchip |
| 13 | * software and any derivatives exclusively with Microchip products. |
| 14 | * It is your responsibility to comply with third party license terms applicable |
| 15 | * to your use of third party software (including open source software) that |
| 16 | * may accompany Microchip software. |
| 17 | * |
| 18 | * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, |
| 19 | * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, |
| 20 | * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, |
| 21 | * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE |
| 22 | * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL |
| 23 | * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE |
| 24 | * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE |
| 25 | * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT |
| 26 | * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY |
| 27 | * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY, |
| 28 | * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE. |
| 29 | * |
| 30 | * \asf_license_stop |
| 31 | * |
| 32 | */ |
| 33 | |
| 34 | #include "hal_usb_device.h" |
| 35 | #include "hal_atomic.h" |
| 36 | |
| 37 | #include <string.h> |
| 38 | |
| 39 | #ifdef __cplusplus |
| 40 | extern "C" { |
| 41 | #endif |
| 42 | |
| 43 | /** USB device HAL driver version. */ |
| 44 | #define USB_D_VERSION 0x00000001u |
| 45 | |
| 46 | /** |
| 47 | * Endpoint callbacks for data transfer. |
| 48 | */ |
| 49 | struct usb_d_ep_callbacks { |
| 50 | /** Callback that is invoked when setup packet is received. */ |
| 51 | usb_d_ep_cb_setup_t req; |
| 52 | /** Callback invoked when buffer is done, but last packet is full size |
| 53 | * packet without ZLP. Return \c true if new transfer has been submitted. |
| 54 | */ |
| 55 | usb_d_ep_cb_more_t more; |
| 56 | /** Callback invoked when transfer is finished/halted/aborted or error |
| 57 | * occurs. |
| 58 | */ |
| 59 | usb_d_ep_cb_xfer_t xfer; |
| 60 | }; |
| 61 | |
| 62 | /** |
| 63 | * Endpoint transfer descriptor header. |
| 64 | */ |
| 65 | struct usb_ep_xfer_hdr { |
| 66 | /** Transfer type, reuse \ref usb_ep_type. */ |
| 67 | uint8_t type; |
| 68 | /** Endpoint address. */ |
| 69 | uint8_t ep; |
| 70 | /** Endpoint state. */ |
| 71 | uint8_t state; |
| 72 | /** Last status code. */ |
| 73 | uint8_t status; |
| 74 | }; |
| 75 | |
| 76 | /** |
| 77 | * Transfer descriptor. |
| 78 | */ |
| 79 | struct usb_ep_xfer { |
| 80 | /** General transfer descriptor. */ |
| 81 | struct usb_ep_xfer_hdr hdr; |
| 82 | /** Pointer to data buffer. */ |
| 83 | uint8_t *buf; |
| 84 | /** Transfer size. */ |
| 85 | uint32_t size; |
| 86 | /** Control request packet. */ |
| 87 | uint8_t req[8]; |
| 88 | }; |
| 89 | |
| 90 | /** |
| 91 | * USB device endpoint descriptor. |
| 92 | */ |
| 93 | struct usb_d_ep { |
| 94 | /** On-going transfer on the endpoint. */ |
| 95 | struct usb_ep_xfer xfer; |
| 96 | /** Endpoint callbacks. */ |
| 97 | struct usb_d_ep_callbacks callbacks; |
| 98 | }; |
| 99 | |
| 100 | /** |
| 101 | * USB device HAL driver descriptor. |
| 102 | */ |
| 103 | struct usb_d_descriptor { |
| 104 | /** USB device endpoints. */ |
| 105 | struct usb_d_ep ep[CONF_USB_D_NUM_EP_SP]; |
| 106 | }; |
| 107 | |
| 108 | /** The USB HAL driver descriptor instance. */ |
| 109 | static struct usb_d_descriptor usb_d_inst; |
| 110 | |
| 111 | /** \brief Find the endpoint. |
| 112 | * \param[in] ep Endpoint address. |
| 113 | * \return Index of endpoint descriptor. |
| 114 | * \retval >=0 The index. |
| 115 | * \retval <0 Not found (endpoint is not initialized). |
| 116 | */ |
| 117 | static int8_t _usb_d_find_ep(const uint8_t ep) |
| 118 | { |
| 119 | int8_t i; |
| 120 | for (i = 0; i < CONF_USB_D_NUM_EP_SP; i++) { |
| 121 | if (usb_d_inst.ep[i].xfer.hdr.ep == ep) { |
| 122 | return i; |
| 123 | } |
| 124 | if (usb_d_inst.ep[i].xfer.hdr.type == USB_EP_XTYPE_CTRL |
| 125 | && (ep & USB_EP_N_MASK) == usb_d_inst.ep[i].xfer.hdr.ep) { |
| 126 | return i; |
| 127 | } |
| 128 | } |
| 129 | return -1; |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * \brief Start transactions |
| 134 | * \param[in] ep Endpoint address. |
| 135 | * \param[in] dir Endpoint transfer direction. |
| 136 | * \param[in] buf Pointer to transfer buffer. |
| 137 | * \param[in] size Transfer size. |
| 138 | * \param[in] zlp Auto append ZLP for IN, or wait ZLP for OUT. |
| 139 | */ |
| 140 | static inline int32_t _usb_d_trans(const uint8_t ep, const bool dir, const uint8_t *buf, const uint32_t size, |
| 141 | const uint8_t zlp) |
| 142 | { |
| 143 | struct usb_d_transfer trans |
| 144 | = {(uint8_t *)buf, size, dir ? (uint8_t)(ep | USB_EP_DIR) : (uint8_t)(ep & USB_EP_N_MASK), zlp}; |
| 145 | |
| 146 | return _usb_d_dev_ep_trans(&trans); |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * \brief Dummy callback that returns false |
| 151 | * \param[in] unused0 Unused parameter. |
| 152 | * \param[in] unused1 Unused parameter. |
| 153 | * \param[in] unused2 Unused parameter. |
| 154 | * \return Always \c false. |
| 155 | */ |
| 156 | static bool usb_d_dummy_cb_false(uint32_t unused0, uint32_t unused1, uint32_t unused2) |
| 157 | { |
| 158 | (void)unused0; |
| 159 | (void)unused1; |
| 160 | (void)unused2; |
| 161 | return false; |
| 162 | } |
| 163 | |
| 164 | /** |
| 165 | * \brief Callback invoked when SETUP packet is ready |
| 166 | * \param[in] ep Endpoint number with transfer direction on bit 8. |
| 167 | */ |
| 168 | static void usb_d_cb_trans_setup(const uint8_t ep) |
| 169 | { |
| 170 | int8_t ep_index = _usb_d_find_ep(ep); |
| 171 | struct usb_d_ep *ept = &usb_d_inst.ep[ep_index]; |
| 172 | uint8_t * req = ept->xfer.req; |
| 173 | |
| 174 | uint8_t n = _usb_d_dev_ep_read_req(ep, req); |
| 175 | if (n != 8) { |
| 176 | _usb_d_dev_ep_stall(ep, USB_EP_STALL_SET); |
| 177 | _usb_d_dev_ep_stall(ep | USB_EP_DIR, USB_EP_STALL_SET); |
| 178 | return; |
| 179 | } |
| 180 | |
| 181 | _usb_d_dev_ep_stall(ep, USB_EP_STALL_CLR); |
| 182 | _usb_d_dev_ep_stall(ep | USB_EP_DIR, USB_EP_STALL_CLR); |
| 183 | ept->xfer.hdr.state = USB_EP_S_IDLE; |
| 184 | if (!ept->callbacks.req(ep, req)) { |
| 185 | ept->xfer.hdr.state = USB_EP_S_HALTED; |
| 186 | _usb_d_dev_ep_stall(ep, USB_EP_STALL_SET); |
| 187 | _usb_d_dev_ep_stall(ep | USB_EP_DIR, USB_EP_STALL_SET); |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | /** |
| 192 | * \brief Callback invoked when request more data |
| 193 | * \param[in] ep Endpoint number with transfer direction on bit 8. |
| 194 | * \param[in] transfered Number of bytes transfered. |
| 195 | */ |
| 196 | static bool usb_d_cb_trans_more(const uint8_t ep, const uint32_t transfered) |
| 197 | { |
| 198 | int8_t ep_index = _usb_d_find_ep(ep); |
| 199 | struct usb_d_ep *ept = &usb_d_inst.ep[ep_index]; |
| 200 | if (ept->xfer.hdr.state == USB_EP_S_X_DATA) { |
| 201 | return ept->callbacks.more(ep, transfered); |
| 202 | } |
| 203 | return false; |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * \brief Handles the case that control endpoint transactions are done |
| 208 | * \param[in,out] ept Pointer to endpoint information. |
| 209 | */ |
| 210 | static inline void usb_d_ctrl_trans_done(struct usb_d_ep *ept) |
| 211 | { |
| 212 | uint8_t state = ept->xfer.hdr.state; |
| 213 | bool req_dir = USB_GET_bmRequestType(ept->xfer.req) & USB_REQ_TYPE_IN; |
| 214 | |
| 215 | if (state == USB_EP_S_X_DATA) { |
| 216 | /* Data stage -> Status stage */ |
| 217 | bool err = ept->callbacks.xfer(ept->xfer.hdr.ep, USB_XFER_DATA, ept->xfer.req); |
| 218 | if (err) { |
| 219 | ept->xfer.hdr.state = USB_EP_S_HALTED; |
| 220 | ept->xfer.hdr.status = USB_XFER_HALT; |
| 221 | _usb_d_dev_ep_stall(req_dir ? ept->xfer.hdr.ep : (ept->xfer.hdr.ep | USB_EP_DIR), USB_EP_STALL_SET); |
| 222 | } else { |
| 223 | ept->xfer.hdr.state = USB_EP_S_X_STATUS; |
| 224 | _usb_d_trans(ept->xfer.hdr.ep, !req_dir, NULL, 0, 1); |
| 225 | } |
| 226 | } else { |
| 227 | /* Status stage done */ |
| 228 | ept->callbacks.xfer(ept->xfer.hdr.ep, USB_XFER_DONE, ept->xfer.req); |
| 229 | ept->xfer.hdr.state = USB_EP_S_X_SETUP; |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | /** |
| 234 | * Callback when USB transactions are finished. |
| 235 | */ |
| 236 | static void _usb_d_cb_trans_done(const uint8_t ep, const int32_t code, const uint32_t transferred) |
| 237 | { |
| 238 | int8_t ep_index = _usb_d_find_ep(ep); |
| 239 | struct usb_d_ep *ept = &usb_d_inst.ep[ep_index]; |
| 240 | |
| 241 | if (code == USB_TRANS_DONE) { |
| 242 | ept->xfer.hdr.status = USB_XFER_DONE; |
| 243 | if (ept->xfer.hdr.type == USB_EP_XTYPE_CTRL) { |
| 244 | usb_d_ctrl_trans_done(ept); |
| 245 | return; |
| 246 | } |
| 247 | ept->xfer.hdr.state = USB_EP_S_IDLE; |
| 248 | } else if (code == USB_TRANS_STALL) { |
| 249 | ept->xfer.hdr.status = USB_XFER_HALT; |
| 250 | if (ept->xfer.hdr.type == USB_EP_XTYPE_CTRL) { |
| 251 | ept->xfer.hdr.state = USB_EP_S_X_SETUP; |
| 252 | _usb_d_dev_ep_stall(ep, USB_EP_STALL_CLR); |
| 253 | } else { |
| 254 | ept->xfer.hdr.state = USB_EP_S_HALTED; |
| 255 | } |
| 256 | } else if (code == USB_TRANS_ABORT) { |
| 257 | ept->xfer.hdr.status = USB_XFER_ABORT; |
| 258 | if (ept->xfer.hdr.type == USB_EP_XTYPE_CTRL) { |
| 259 | ept->xfer.hdr.state = USB_EP_S_X_SETUP; |
| 260 | return; |
| 261 | } |
| 262 | ept->xfer.hdr.state = USB_EP_S_IDLE; |
| 263 | } else if (code == USB_TRANS_RESET) { |
| 264 | ept->xfer.hdr.state = USB_EP_S_DISABLED; |
| 265 | ept->xfer.hdr.status = USB_XFER_RESET; |
| 266 | } else { |
| 267 | ept->xfer.hdr.state = USB_EP_S_ERROR; |
| 268 | ept->xfer.hdr.status = USB_XFER_ERROR; |
| 269 | } |
| 270 | |
| 271 | ept->callbacks.xfer(ep, (enum usb_xfer_code)ept->xfer.hdr.status, (void *)transferred); |
| 272 | } |
| 273 | |
| 274 | int32_t usb_d_init(void) |
| 275 | { |
| 276 | int32_t rc = _usb_d_dev_init(); |
| 277 | uint8_t i; |
| 278 | if (rc < 0) { |
| 279 | return rc; |
| 280 | } |
| 281 | memset(usb_d_inst.ep, 0x00, sizeof(struct usb_d_ep) * CONF_USB_D_NUM_EP_SP); |
| 282 | for (i = 0; i < CONF_USB_D_NUM_EP_SP; i++) { |
| 283 | usb_d_inst.ep[i].xfer.hdr.ep = 0xFF; |
| 284 | usb_d_inst.ep[i].callbacks.req = (usb_d_ep_cb_setup_t)usb_d_dummy_cb_false; |
| 285 | usb_d_inst.ep[i].callbacks.more = (usb_d_ep_cb_more_t)usb_d_dummy_cb_false; |
| 286 | usb_d_inst.ep[i].callbacks.xfer = (usb_d_ep_cb_xfer_t)usb_d_dummy_cb_false; |
| 287 | } |
| 288 | /* Handles device driver endpoint callbacks to build transfer. */ |
| 289 | _usb_d_dev_register_ep_callback(USB_D_DEV_EP_CB_SETUP, (FUNC_PTR)usb_d_cb_trans_setup); |
| 290 | _usb_d_dev_register_ep_callback(USB_D_DEV_EP_CB_MORE, (FUNC_PTR)usb_d_cb_trans_more); |
| 291 | _usb_d_dev_register_ep_callback(USB_D_DEV_EP_CB_DONE, (FUNC_PTR)_usb_d_cb_trans_done); |
| 292 | return ERR_NONE; |
| 293 | } |
| 294 | |
| 295 | void usb_d_deinit(void) |
| 296 | { |
| 297 | _usb_d_dev_deinit(); |
| 298 | } |
| 299 | |
| 300 | void usb_d_register_callback(const enum usb_d_cb_type type, const FUNC_PTR func) |
| 301 | { |
| 302 | /* Directly uses device driver callback. */ |
| 303 | _usb_d_dev_register_callback(type, func); |
| 304 | } |
| 305 | |
| 306 | int32_t usb_d_enable(void) |
| 307 | { |
| 308 | return _usb_d_dev_enable(); |
| 309 | } |
| 310 | |
| 311 | void usb_d_disable(void) |
| 312 | { |
| 313 | _usb_d_dev_disable(); |
| 314 | } |
| 315 | |
| 316 | void usb_d_attach(void) |
| 317 | { |
| 318 | _usb_d_dev_attach(); |
| 319 | } |
| 320 | |
| 321 | void usb_d_detach(void) |
| 322 | { |
| 323 | _usb_d_dev_detach(); |
| 324 | } |
| 325 | |
| 326 | enum usb_speed usb_d_get_speed(void) |
| 327 | { |
| 328 | return _usb_d_dev_get_speed(); |
| 329 | } |
| 330 | |
| 331 | uint16_t usb_d_get_frame_num(void) |
| 332 | { |
| 333 | return _usb_d_dev_get_frame_n(); |
| 334 | } |
| 335 | |
| 336 | uint8_t usb_d_get_uframe_num(void) |
| 337 | { |
| 338 | return _usb_d_dev_get_uframe_n(); |
| 339 | } |
| 340 | |
| 341 | void usb_d_set_address(const uint8_t addr) |
| 342 | { |
| 343 | _usb_d_dev_set_address(addr); |
| 344 | } |
| 345 | |
| 346 | void usb_d_send_remotewakeup(void) |
| 347 | { |
| 348 | _usb_d_dev_send_remotewakeup(); |
| 349 | } |
| 350 | |
| 351 | int32_t usb_d_ep0_init(const uint8_t max_pkt_size) |
| 352 | { |
| 353 | return usb_d_ep_init(0, USB_EP_XTYPE_CTRL, max_pkt_size); |
| 354 | } |
| 355 | |
| 356 | int32_t usb_d_ep_init(const uint8_t ep, const uint8_t attr, const uint16_t max_pkt_size) |
| 357 | { |
| 358 | int32_t rc; |
| 359 | int8_t ep_index = _usb_d_find_ep(ep); |
| 360 | struct usb_d_ep *ept = &usb_d_inst.ep[ep_index]; |
| 361 | if (ep_index >= 0) { |
| 362 | return -USB_ERR_REDO; |
| 363 | } else { |
| 364 | ep_index = _usb_d_find_ep(0xFF); |
| 365 | if (ep_index < 0) { |
| 366 | return -USB_ERR_ALLOC_FAIL; |
| 367 | } |
| 368 | ept = &usb_d_inst.ep[ep_index]; |
| 369 | } |
| 370 | rc = _usb_d_dev_ep_init(ep, attr, max_pkt_size); |
| 371 | if (rc < 0) { |
| 372 | return rc; |
| 373 | } |
| 374 | ept->xfer.hdr.ep = ep; |
| 375 | ept->xfer.hdr.type = attr & USB_EP_XTYPE_MASK; |
| 376 | return ERR_NONE; |
| 377 | } |
| 378 | |
| 379 | void usb_d_ep_deinit(const uint8_t ep) |
| 380 | { |
| 381 | int8_t ep_index = _usb_d_find_ep(ep); |
| 382 | struct usb_d_ep *ept = &usb_d_inst.ep[ep_index]; |
| 383 | if (ep_index < 0) { |
| 384 | return; |
| 385 | } |
| 386 | _usb_d_dev_ep_deinit(ep); |
| 387 | ept->xfer.hdr.ep = 0xFF; |
| 388 | } |
| 389 | |
| 390 | int32_t usb_d_ep_enable(const uint8_t ep) |
| 391 | { |
| 392 | int8_t ep_index = _usb_d_find_ep(ep); |
| 393 | struct usb_d_ep *ept = &usb_d_inst.ep[ep_index]; |
| 394 | int32_t rc; |
| 395 | if (ep_index < 0) { |
| 396 | return -USB_ERR_PARAM; |
| 397 | } |
| 398 | ept->xfer.hdr.state = (ept->xfer.hdr.type == USB_EP_XTYPE_CTRL) ? USB_EP_S_X_SETUP : USB_EP_S_IDLE; |
| 399 | rc = _usb_d_dev_ep_enable(ep); |
| 400 | if (rc < 0) { |
| 401 | ept->xfer.hdr.state = USB_EP_S_DISABLED; |
| 402 | } |
| 403 | return rc; |
| 404 | } |
| 405 | |
| 406 | void usb_d_ep_disable(const uint8_t ep) |
| 407 | { |
| 408 | int8_t ep_index = _usb_d_find_ep(ep); |
| 409 | struct usb_d_ep *ept = &usb_d_inst.ep[ep_index]; |
| 410 | if (ep_index < 0) { |
| 411 | return; |
| 412 | } |
| 413 | _usb_d_dev_ep_disable(ep); |
| 414 | ept->xfer.hdr.state = USB_EP_S_DISABLED; |
| 415 | } |
| 416 | |
| 417 | uint8_t *usb_d_ep_get_req(const uint8_t ep) |
| 418 | { |
| 419 | int8_t ep_index = _usb_d_find_ep(ep); |
| 420 | if (ep_index < 0) { |
| 421 | return NULL; |
| 422 | } |
| 423 | return usb_d_inst.ep[ep_index].xfer.req; |
| 424 | } |
| 425 | |
| 426 | int32_t usb_d_ep_transfer(const struct usb_d_transfer *xfer) |
| 427 | { |
| 428 | int8_t ep_index = _usb_d_find_ep(xfer->ep); |
| 429 | struct usb_d_ep * ept = &usb_d_inst.ep[ep_index]; |
| 430 | bool dir = USB_EP_GET_DIR(xfer->ep), zlp = xfer->zlp; |
| 431 | uint32_t len = xfer->size; |
| 432 | int32_t rc; |
| 433 | volatile uint8_t state; |
| 434 | volatile hal_atomic_t flags; |
| 435 | |
| 436 | if (ep_index < 0) { |
| 437 | return -USB_ERR_PARAM; |
| 438 | } |
| 439 | |
| 440 | atomic_enter_critical(&flags); |
| 441 | state = ept->xfer.hdr.state; |
| 442 | if (state == USB_EP_S_IDLE) { |
| 443 | ept->xfer.hdr.state = USB_EP_S_X_DATA; |
| 444 | atomic_leave_critical(&flags); |
| 445 | } else { |
| 446 | atomic_leave_critical(&flags); |
| 447 | switch (state) { |
| 448 | case USB_EP_S_HALTED: |
| 449 | return USB_HALTED; |
| 450 | case USB_EP_S_ERROR: |
| 451 | return -USB_ERROR; |
| 452 | case USB_EP_S_DISABLED: |
| 453 | return -USB_ERR_FUNC; |
| 454 | default: /* USB_EP_S_X_xxxx */ |
| 455 | return USB_BUSY; |
| 456 | } |
| 457 | } |
| 458 | |
| 459 | if (ept->xfer.hdr.type == USB_EP_XTYPE_CTRL) { |
| 460 | uint16_t req_len = USB_GET_wLength(ept->xfer.req); |
| 461 | /* SETUP without data: ZLP IN as status. */ |
| 462 | if (req_len == 0) { |
| 463 | dir = true; |
| 464 | len = 0; |
| 465 | zlp = true; |
| 466 | ept->xfer.hdr.state = USB_EP_S_X_STATUS; |
| 467 | } else { |
| 468 | dir = (USB_GET_bmRequestType(ept->xfer.req) & USB_REQ_TYPE_IN); |
| 469 | /* Data length not exceed requested. */ |
| 470 | if (len > req_len) { |
| 471 | len = req_len; |
| 472 | } |
| 473 | if (dir) { |
| 474 | /* Setup -> In */ |
| 475 | zlp = (req_len > len); |
| 476 | } else { |
| 477 | zlp = false; |
| 478 | } |
| 479 | } |
| 480 | } |
| 481 | |
| 482 | rc = _usb_d_trans(xfer->ep, dir, xfer->buf, len, zlp); |
| 483 | return rc; |
| 484 | } |
| 485 | |
| 486 | void usb_d_ep_abort(const uint8_t ep) |
| 487 | { |
| 488 | int8_t ep_index = _usb_d_find_ep(ep); |
| 489 | struct usb_d_ep *ept = &usb_d_inst.ep[ep_index]; |
| 490 | if (ep_index < 0) { |
| 491 | return; |
| 492 | } |
| 493 | _usb_d_dev_ep_abort(ep); |
| 494 | ept->xfer.hdr.state = USB_EP_S_IDLE; |
| 495 | ept->xfer.hdr.status = USB_XFER_ABORT; |
| 496 | } |
| 497 | |
| 498 | int32_t usb_d_ep_get_status(const uint8_t ep, struct usb_d_ep_status *stat) |
| 499 | { |
| 500 | int8_t ep_index = _usb_d_find_ep(ep); |
| 501 | struct usb_d_ep * ept = &usb_d_inst.ep[ep_index]; |
| 502 | struct usb_d_trans_status tmp; |
| 503 | uint8_t state = ept->xfer.hdr.state; |
| 504 | if (ep_index < 0) { |
| 505 | return -USB_ERR_PARAM; |
| 506 | } |
| 507 | if (stat) { |
| 508 | /* Check transaction status if transferring data. */ |
| 509 | _usb_d_dev_ep_get_status(ep, &tmp); |
| 510 | stat->ep = ep; |
| 511 | stat->state = state; |
| 512 | stat->code = ept->xfer.hdr.status; |
| 513 | stat->count = tmp.count; |
| 514 | stat->size = tmp.size; |
| 515 | } |
| 516 | switch (state) { |
| 517 | case USB_EP_S_IDLE: |
| 518 | return USB_OK; |
| 519 | case USB_EP_S_HALTED: |
| 520 | return USB_HALTED; |
| 521 | case USB_EP_S_ERROR: |
| 522 | return -USB_ERROR; |
| 523 | case USB_EP_S_DISABLED: |
| 524 | return -USB_ERR_FUNC; |
| 525 | default: |
| 526 | /* Busy */ |
| 527 | return USB_BUSY; |
| 528 | } |
| 529 | } |
| 530 | |
| 531 | static inline int32_t _usb_d_ep_halt_clr(const uint8_t ep) |
| 532 | { |
| 533 | int8_t ep_index = _usb_d_find_ep(ep); |
| 534 | struct usb_d_ep *ept = &usb_d_inst.ep[ep_index]; |
| 535 | int32_t rc; |
| 536 | if (ep_index < 0) { |
| 537 | return -USB_ERR_PARAM; |
| 538 | } |
| 539 | if (_usb_d_dev_ep_stall(ep, USB_EP_STALL_GET)) { |
| 540 | rc = _usb_d_dev_ep_stall(ep, USB_EP_STALL_CLR); |
| 541 | if (rc < 0) { |
| 542 | return rc; |
| 543 | } |
| 544 | ept->xfer.hdr.state = USB_EP_S_IDLE; |
| 545 | ept->xfer.hdr.status = USB_XFER_UNHALT; |
| 546 | ept->callbacks.xfer(ep, USB_XFER_UNHALT, NULL); |
| 547 | } |
| 548 | return ERR_NONE; |
| 549 | } |
| 550 | |
| 551 | int32_t usb_d_ep_halt(const uint8_t ep, const enum usb_ep_halt_ctrl ctrl) |
| 552 | { |
| 553 | if (ctrl == USB_EP_HALT_CLR) { |
| 554 | return _usb_d_ep_halt_clr(ep); |
| 555 | } else if (ctrl == USB_EP_HALT_SET) { |
| 556 | return _usb_d_dev_ep_stall(ep, USB_EP_STALL_SET); |
| 557 | } else { |
| 558 | return _usb_d_dev_ep_stall(ep, USB_EP_STALL_GET); |
| 559 | } |
| 560 | } |
| 561 | |
| 562 | void usb_d_ep_register_callback(const uint8_t ep, const enum usb_d_ep_cb_type type, const FUNC_PTR func) |
| 563 | { |
| 564 | int8_t ep_index = _usb_d_find_ep(ep); |
| 565 | struct usb_d_ep *ept = &usb_d_inst.ep[ep_index]; |
| 566 | FUNC_PTR f = func ? (FUNC_PTR)func : (FUNC_PTR)usb_d_dummy_cb_false; |
| 567 | if (ep_index < 0) { |
| 568 | return; |
| 569 | } |
| 570 | switch (type) { |
| 571 | case USB_D_EP_CB_SETUP: |
| 572 | ept->callbacks.req = (usb_d_ep_cb_setup_t)f; |
| 573 | break; |
| 574 | case USB_D_EP_CB_MORE: |
| 575 | ept->callbacks.more = (usb_d_ep_cb_more_t)f; |
| 576 | break; |
| 577 | case USB_D_EP_CB_XFER: |
| 578 | ept->callbacks.xfer = (usb_d_ep_cb_xfer_t)f; |
| 579 | break; |
| 580 | default: |
| 581 | break; |
| 582 | } |
| 583 | } |
| 584 | |
| 585 | uint32_t usb_d_get_version(void) |
| 586 | { |
| 587 | return USB_D_VERSION; |
| 588 | } |
| 589 | |
| 590 | #ifdef __cplusplus |
| 591 | } |
| 592 | #endif |