1 /* cyangadget.c - Linux USB Gadget driver file for the Cypress West Bridge
2 ## ===========================
3 ## Copyright (C) 2010 Cypress Semiconductor
5 ## This program is free software; you can redistribute it and/or
6 ## modify it under the terms of the GNU General Public License
7 ## as published by the Free Software Foundation; either version 2
8 ## of the License, or (at your option) any later version.
10 ## This program is distributed in the hope that it will be useful,
11 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 ## GNU General Public License for more details.
15 ## You should have received a copy of the GNU General Public License
16 ## along with this program; if not, write to the Free Software
17 ## Foundation, Inc., 51 Franklin Street, Fifth Floor
18 ## Boston, MA 02110-1301, USA.
19 ## ===========================
23 * Cypress West Bridge high/full speed usb device controller code
24 * Based on the Netchip 2280 device controller by David Brownell
25 * in the linux 2.6.10 kernel
27 * linux/drivers/usb/gadget/net2280.c
31 * Copyright (C) 2002 NetChip Technology, Inc. (http://www.netchip.com)
32 * Copyright (C) 2003 David Brownell
34 * This program is free software; you can redistribute it and/or modify
35 * it under the terms of the GNU General Public License as published by
36 * the Free Software Foundation; either version 2 of the License, or
37 * (at your option) any later version.
39 * This program is distributed in the hope that it will be useful,
40 * but WITHOUT ANY WARRANTY; without even the implied warranty of
41 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
42 * GNU General Public License for more details.
44 * You should have received a copy of the GNU General Public License
45 * along with this program; if not, write to the Free Software
46 * Foundation, Inc., 59 Temple Place, Suite 330
47 * Boston, MA 02111-1307 USA
50 #include "cyasgadget.h"
52 #define CY_AS_DRIVER_DESC "cypress west bridge usb gadget"
53 #define CY_AS_DRIVER_VERSION "REV B"
54 #define DMA_ADDR_INVALID (~(dma_addr_t)0)
56 static const char cy_as_driver_name[] = "cy_astoria_gadget";
57 static const char cy_as_driver_desc[] = CY_AS_DRIVER_DESC;
59 static const char cy_as_ep0name[] = "EP0";
60 static const char *cy_as_ep_names[] = {
62 "EP2", "EP3", "EP4", "EP5", "EP6", "EP7", "EP8",
63 "EP9", "EP10", "EP11", "EP12", "EP13", "EP14", "EP15"
66 /* forward declarations */
69 struct cyasgadget_ep *an_ep);
72 cyasgadget_fifo_status(
76 cyasgadget_stallcallback(
77 cy_as_device_handle h,
78 cy_as_return_status_t status,
80 cy_as_funct_c_b_type cbtype,
84 static cyasgadget *cy_as_gadget_controller;
86 static int append_mtp;
87 module_param(append_mtp, bool, S_IRUGO | S_IWUSR);
88 MODULE_PARM_DESC(append_mtp,
89 "west bridge to append descriptors for mtp 0=no 1=yes");
91 static int msc_enum_bus_0;
92 module_param(msc_enum_bus_0, bool, S_IRUGO | S_IWUSR);
93 MODULE_PARM_DESC(msc_enum_bus_0,
94 "west bridge to enumerate bus 0 as msc 0=no 1=yes");
96 static int msc_enum_bus_1;
97 module_param(msc_enum_bus_1, bool, S_IRUGO | S_IWUSR);
98 MODULE_PARM_DESC(msc_enum_bus_1,
99 "west bridge to enumerate bus 1 as msc 0=no 1=yes");
101 /* all Callbacks are placed in this subsection*/
102 static void cy_as_gadget_usb_event_callback(
103 cy_as_device_handle h,
108 cyasgadget *cy_as_dev;
109 #ifndef WESTBRIDGE_NDEBUG
110 struct usb_ctrlrequest *ctrlreq;
113 /* cy_as_dev = container_of(h, cyasgadget, dev_handle); */
114 cy_as_dev = cy_as_gadget_controller;
116 case cy_as_event_usb_suspend:
117 #ifndef WESTBRIDGE_NDEBUG
118 cy_as_hal_print_message(
119 "<1>_cy_as_event_usb_suspend received\n");
121 cy_as_dev->driver->suspend(&cy_as_dev->gadget);
124 case cy_as_event_usb_resume:
125 #ifndef WESTBRIDGE_NDEBUG
126 cy_as_hal_print_message(
127 "<1>_cy_as_event_usb_resume received\n");
129 cy_as_dev->driver->resume(&cy_as_dev->gadget);
132 case cy_as_event_usb_reset:
133 #ifndef WESTBRIDGE_NDEBUG
134 cy_as_hal_print_message(
135 "<1>_cy_as_event_usb_reset received\n");
139 case cy_as_event_usb_speed_change:
140 #ifndef WESTBRIDGE_NDEBUG
141 cy_as_hal_print_message(
142 "<1>_cy_as_event_usb_speed_change received\n");
146 case cy_as_event_usb_set_config:
147 #ifndef WESTBRIDGE_NDEBUG
148 cy_as_hal_print_message(
149 "<1>_cy_as_event_usb_set_config received\n");
153 case cy_as_event_usb_setup_packet:
154 #ifndef WESTBRIDGE_NDEBUG
155 ctrlreq = (struct usb_ctrlrequest *)evdata;
157 cy_as_hal_print_message("<1>_cy_as_event_usb_setup_packet "
164 ctrlreq->bRequestType,
171 cy_as_dev->outsetupreq = 0;
172 if ((((uint8_t *)evdata)[0] & USB_DIR_IN) == USB_DIR_OUT)
173 cy_as_dev->outsetupreq = 1;
174 cy_as_dev->driver->setup(&cy_as_dev->gadget,
175 (struct usb_ctrlrequest *)evdata);
178 case cy_as_event_usb_status_packet:
179 #ifndef WESTBRIDGE_NDEBUG
180 cy_as_hal_print_message(
181 "<1>_cy_as_event_usb_status_packet received\n");
185 case cy_as_event_usb_inquiry_before:
186 #ifndef WESTBRIDGE_NDEBUG
187 cy_as_hal_print_message(
188 "<1>_cy_as_event_usb_inquiry_before received\n");
192 case cy_as_event_usb_inquiry_after:
193 #ifndef WESTBRIDGE_NDEBUG
194 cy_as_hal_print_message(
195 "<1>_cy_as_event_usb_inquiry_after received\n");
199 case cy_as_event_usb_start_stop:
200 #ifndef WESTBRIDGE_NDEBUG
201 cy_as_hal_print_message(
202 "<1>_cy_as_event_usb_start_stop received\n");
211 static void cy_as_gadget_mtp_event_callback(
212 cy_as_device_handle handle,
213 cy_as_mtp_event evtype,
218 cyasgadget *dev = cy_as_gadget_controller;
222 case cy_as_mtp_send_object_complete:
224 cy_as_mtp_send_object_complete_data *send_obj_data =
225 (cy_as_mtp_send_object_complete_data *) evdata;
227 #ifndef WESTBRIDGE_NDEBUG
228 cy_as_hal_print_message(
229 "<6>MTP EVENT: send_object_complete\n");
230 cy_as_hal_print_message(
231 "<6>_bytes sent = %d\n_send status = %d",
232 send_obj_data->byte_count,
233 send_obj_data->status);
236 dev->tmtp_send_complete_data.byte_count =
237 send_obj_data->byte_count;
238 dev->tmtp_send_complete_data.status =
239 send_obj_data->status;
240 dev->tmtp_send_complete_data.transaction_id =
241 send_obj_data->transaction_id;
242 dev->tmtp_send_complete = cy_true;
245 case cy_as_mtp_get_object_complete:
247 cy_as_mtp_get_object_complete_data *get_obj_data =
248 (cy_as_mtp_get_object_complete_data *) evdata;
250 #ifndef WESTBRIDGE_NDEBUG
251 cy_as_hal_print_message(
252 "<6>MTP EVENT: get_object_complete\n");
253 cy_as_hal_print_message(
254 "<6>_bytes got = %d\n_get status = %d",
255 get_obj_data->byte_count, get_obj_data->status);
258 dev->tmtp_get_complete_data.byte_count =
259 get_obj_data->byte_count;
260 dev->tmtp_get_complete_data.status =
261 get_obj_data->status;
262 dev->tmtp_get_complete = cy_true;
265 case cy_as_mtp_block_table_needed:
267 dev->tmtp_need_new_blk_tbl = cy_true;
268 #ifndef WESTBRIDGE_NDEBUG
269 cy_as_hal_print_message(
270 "<6>MTP EVENT: cy_as_mtp_block_table_needed\n");
280 cyasgadget_setupreadcallback(
281 cy_as_device_handle h,
282 cy_as_end_point_number_t ep,
285 cy_as_return_status_t status)
287 cyasgadget_ep *an_ep;
288 cyasgadget_req *an_req;
289 cyasgadget *cy_as_dev;
294 cy_as_dev = cy_as_gadget_controller;
295 if (cy_as_dev->driver == NULL)
298 an_ep = &cy_as_dev->an_gadget_ep[ep];
299 spin_lock_irqsave(&cy_as_dev->lock, flags);
300 stopped = an_ep->stopped;
302 #ifndef WESTBRIDGE_NDEBUG
303 cy_as_hal_print_message(
304 "%s: ep=%d, count=%d, "
305 "status=%d\n", __func__, ep, count, status);
308 an_req = list_entry(an_ep->queue.next,
309 cyasgadget_req, queue);
310 list_del_init(&an_req->queue);
312 if (status == CY_AS_ERROR_SUCCESS)
313 an_req->req.status = 0;
315 an_req->req.status = -status;
316 an_req->req.actual = count;
319 spin_unlock_irqrestore(&cy_as_dev->lock, flags);
321 an_req->req.complete(&an_ep->usb_ep_inst, &an_req->req);
323 an_ep->stopped = stopped;
326 /*called when the write of a setup packet has been completed*/
327 static void cyasgadget_setupwritecallback(
328 cy_as_device_handle h,
329 cy_as_end_point_number_t ep,
332 cy_as_return_status_t status
335 cyasgadget_ep *an_ep;
336 cyasgadget_req *an_req;
337 cyasgadget *cy_as_dev;
343 #ifndef WESTBRIDGE_NDEBUG
344 cy_as_hal_print_message("<1>%s called status=0x%x\n",
348 cy_as_dev = cy_as_gadget_controller;
350 if (cy_as_dev->driver == NULL)
353 an_ep = &cy_as_dev->an_gadget_ep[ep];
355 spin_lock_irqsave(&cy_as_dev->lock, flags);
357 stopped = an_ep->stopped;
359 #ifndef WESTBRIDGE_NDEBUG
360 cy_as_hal_print_message("setup_write_callback: ep=%d, "
361 "count=%d, status=%d\n", ep, count, status);
364 an_req = list_entry(an_ep->queue.next, cyasgadget_req, queue);
365 list_del_init(&an_req->queue);
367 an_req->req.actual = count;
368 an_req->req.status = 0;
371 spin_unlock_irqrestore(&cy_as_dev->lock, flags);
373 an_req->req.complete(&an_ep->usb_ep_inst, &an_req->req);
375 an_ep->stopped = stopped;
379 /* called when a read operation has completed.*/
380 static void cyasgadget_readcallback(
381 cy_as_device_handle h,
382 cy_as_end_point_number_t ep,
385 cy_as_return_status_t status
388 cyasgadget_ep *an_ep;
389 cyasgadget_req *an_req;
390 cyasgadget *cy_as_dev;
392 cy_as_return_status_t ret;
398 cy_as_dev = cy_as_gadget_controller;
400 if (cy_as_dev->driver == NULL)
403 an_ep = &cy_as_dev->an_gadget_ep[ep];
404 stopped = an_ep->stopped;
406 #ifndef WESTBRIDGE_NDEBUG
407 cy_as_hal_print_message("%s: ep=%d, count=%d, status=%d\n",
408 __func__, ep, count, status);
411 if (status == CY_AS_ERROR_CANCELED)
414 spin_lock_irqsave(&cy_as_dev->lock, flags);
416 an_req = list_entry(an_ep->queue.next, cyasgadget_req, queue);
417 list_del_init(&an_req->queue);
419 if (status == CY_AS_ERROR_SUCCESS)
420 an_req->req.status = 0;
422 an_req->req.status = -status;
424 an_req->complete = 1;
425 an_req->req.actual = count;
428 spin_unlock_irqrestore(&cy_as_dev->lock, flags);
429 an_req->req.complete(&an_ep->usb_ep_inst, &an_req->req);
431 an_ep->stopped = stopped;
433 /* We need to call ReadAsync on this end-point
434 * again, so as to not miss any data packets. */
435 if (!an_ep->stopped) {
436 spin_lock_irqsave(&cy_as_dev->lock, flags);
438 if (!list_empty(&an_ep->queue))
439 an_req = list_entry(an_ep->queue.next,
440 cyasgadget_req, queue);
442 spin_unlock_irqrestore(&cy_as_dev->lock, flags);
444 if ((an_req) && (an_req->req.status == -EINPROGRESS)) {
445 ret = cy_as_usb_read_data_async(cy_as_dev->dev_handle,
446 an_ep->num, cy_false, an_req->req.length,
447 an_req->req.buf, cyasgadget_readcallback);
449 if (ret != CY_AS_ERROR_SUCCESS)
450 cy_as_hal_print_message("<1>_cy_as_gadget: "
451 "cy_as_usb_read_data_async failed "
452 "with error code %d\n", ret);
454 an_req->req.status = -EALREADY;
459 /* function is called when a usb write operation has completed*/
460 static void cyasgadget_writecallback(
461 cy_as_device_handle h,
462 cy_as_end_point_number_t ep,
465 cy_as_return_status_t status
468 cyasgadget_ep *an_ep;
469 cyasgadget_req *an_req;
470 cyasgadget *cy_as_dev;
471 unsigned stopped = 0;
472 cy_as_return_status_t ret;
478 cy_as_dev = cy_as_gadget_controller;
479 if (cy_as_dev->driver == NULL)
482 an_ep = &cy_as_dev->an_gadget_ep[ep];
484 if (status == CY_AS_ERROR_CANCELED)
487 #ifndef WESTBRIDGE_NDEBUG
488 cy_as_hal_print_message("%s: ep=%d, count=%d, status=%d\n",
489 __func__, ep, count, status);
492 spin_lock_irqsave(&cy_as_dev->lock, flags);
494 an_req = list_entry(an_ep->queue.next, cyasgadget_req, queue);
495 list_del_init(&an_req->queue);
496 an_req->req.actual = count;
498 /* Verify the status value before setting req.status to zero */
499 if (status == CY_AS_ERROR_SUCCESS)
500 an_req->req.status = 0;
502 an_req->req.status = -status;
506 spin_unlock_irqrestore(&cy_as_dev->lock, flags);
508 an_req->req.complete(&an_ep->usb_ep_inst, &an_req->req);
509 an_ep->stopped = stopped;
511 /* We need to call WriteAsync on this end-point again, so as to not
512 miss any data packets. */
513 if (!an_ep->stopped) {
514 spin_lock_irqsave(&cy_as_dev->lock, flags);
516 if (!list_empty(&an_ep->queue))
517 an_req = list_entry(an_ep->queue.next,
518 cyasgadget_req, queue);
519 spin_unlock_irqrestore(&cy_as_dev->lock, flags);
521 if ((an_req) && (an_req->req.status == -EINPROGRESS)) {
522 ret = cy_as_usb_write_data_async(cy_as_dev->dev_handle,
523 an_ep->num, an_req->req.length, an_req->req.buf,
524 cy_false, cyasgadget_writecallback);
526 if (ret != CY_AS_ERROR_SUCCESS)
527 cy_as_hal_print_message("<1>_cy_as_gadget: "
528 "cy_as_usb_write_data_async "
529 "failed with error code %d\n", ret);
531 an_req->req.status = -EALREADY;
536 static void cyasgadget_stallcallback(
537 cy_as_device_handle h,
538 cy_as_return_status_t status,
540 cy_as_funct_c_b_type cbtype,
544 #ifndef WESTBRIDGE_NDEBUG
545 if (status != CY_AS_ERROR_SUCCESS)
546 cy_as_hal_print_message("<1>_set/_clear stall "
547 "failed with status %d\n", status);
552 /*******************************************************************/
553 /* All usb_ep_ops (cyasgadget_ep_ops) are placed in this subsection*/
554 /*******************************************************************/
555 static int cyasgadget_enable(
557 const struct usb_endpoint_descriptor *desc
561 cyasgadget_ep *an_ep;
565 an_ep = container_of(_ep, cyasgadget_ep, usb_ep_inst);
566 if (!_ep || !desc || an_ep->desc || _ep->name == cy_as_ep0name
567 || desc->bDescriptorType != USB_DT_ENDPOINT)
571 if (!an_dev->driver || an_dev->gadget.speed == USB_SPEED_UNKNOWN)
574 max = le16_to_cpu(desc->wMaxPacketSize) & 0x1fff;
576 spin_lock_irqsave(&an_dev->lock, flags);
577 _ep->maxpacket = max & 0x7ff;
580 /* ep_reset() has already been called */
582 an_ep->out_overflow = 0;
584 if (an_ep->cyepconfig.enabled != cy_true) {
585 #ifndef WESTBRIDGE_NDEBUG
586 cy_as_hal_print_message("<1>_cy_as_gadget: "
587 "cy_as_usb_end_point_config EP %s mismatch "
588 "on enabled\n", an_ep->usb_ep_inst.name);
590 spin_unlock_irqrestore(&an_dev->lock, flags);
594 tmp = (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
595 an_ep->is_iso = (tmp == USB_ENDPOINT_XFER_ISOC) ? 1 : 0;
597 spin_unlock_irqrestore(&an_dev->lock, flags);
600 case USB_ENDPOINT_XFER_ISOC:
601 if (an_ep->cyepconfig.type != cy_as_usb_iso) {
602 #ifndef WESTBRIDGE_NDEBUG
603 cy_as_hal_print_message("<1>_cy_as_gadget: "
604 "cy_as_usb_end_point_config EP %s mismatch "
605 "on type %d %d\n", an_ep->usb_ep_inst.name,
606 an_ep->cyepconfig.type, cy_as_usb_iso);
611 case USB_ENDPOINT_XFER_INT:
612 if (an_ep->cyepconfig.type != cy_as_usb_int) {
613 #ifndef WESTBRIDGE_NDEBUG
614 cy_as_hal_print_message("<1>_cy_as_gadget: "
615 "cy_as_usb_end_point_config EP %s mismatch "
616 "on type %d %d\n", an_ep->usb_ep_inst.name,
617 an_ep->cyepconfig.type, cy_as_usb_int);
623 if (an_ep->cyepconfig.type != cy_as_usb_bulk) {
624 #ifndef WESTBRIDGE_NDEBUG
625 cy_as_hal_print_message("<1>_cy_as_gadget: "
626 "cy_as_usb_end_point_config EP %s mismatch "
627 "on type %d %d\n", an_ep->usb_ep_inst.name,
628 an_ep->cyepconfig.type, cy_as_usb_bulk);
635 tmp = desc->bEndpointAddress;
636 an_ep->is_in = (tmp & USB_DIR_IN) != 0;
638 if ((an_ep->cyepconfig.dir == cy_as_usb_in) &&
640 #ifndef WESTBRIDGE_NDEBUG
641 cy_as_hal_print_message("<1>_cy_as_gadget: "
642 "cy_as_usb_end_point_config EP %s mismatch "
643 "on dir %d %d\n", an_ep->usb_ep_inst.name,
644 an_ep->cyepconfig.dir, cy_as_usb_in);
647 } else if ((an_ep->cyepconfig.dir == cy_as_usb_out) &&
649 #ifndef WESTBRIDGE_NDEBUG
650 cy_as_hal_print_message("<1>_cy_as_gadget: "
651 "cy_as_usb_end_point_config EP %s mismatch "
652 "on dir %d %d\n", an_ep->usb_ep_inst.name,
653 an_ep->cyepconfig.dir, cy_as_usb_out);
658 cy_as_usb_clear_stall(an_dev->dev_handle, an_ep->num,
659 cyasgadget_stallcallback, 0);
661 cy_as_hal_print_message("%s enabled %s (ep%d-%d) max %04x\n",
662 __func__, _ep->name, an_ep->num, tmp, max);
667 static int cyasgadget_disable(
671 cyasgadget_ep *an_ep;
674 an_ep = container_of(_ep, cyasgadget_ep, usb_ep_inst);
675 if (!_ep || !an_ep->desc || _ep->name == cy_as_ep0name)
678 spin_lock_irqsave(&an_ep->dev->lock, flags);
679 cyas_ep_reset(an_ep);
681 spin_unlock_irqrestore(&an_ep->dev->lock, flags);
685 static struct usb_request *cyasgadget_alloc_request(
686 struct usb_ep *_ep, gfp_t gfp_flags
689 cyasgadget_ep *an_ep;
690 cyasgadget_req *an_req;
695 an_ep = container_of(_ep, cyasgadget_ep, usb_ep_inst);
697 an_req = kzalloc(sizeof(cyasgadget_req), gfp_flags);
701 an_req->req.dma = DMA_ADDR_INVALID;
702 INIT_LIST_HEAD(&an_req->queue);
707 static void cyasgadget_free_request(
709 struct usb_request *_req
712 cyasgadget_req *an_req;
717 an_req = container_of(_req, cyasgadget_req, req);
722 /* Load a packet into the fifo we use for usb IN transfers.
723 * works for all endpoints. */
724 static int cyasgadget_queue(
726 struct usb_request *_req,
730 cyasgadget_req *as_req;
731 cyasgadget_ep *as_ep;
732 cyasgadget *cy_as_dev;
734 cy_as_return_status_t ret = 0;
736 as_req = container_of(_req, cyasgadget_req, req);
737 if (!_req || !_req->complete || !_req->buf
738 || !list_empty(&as_req->queue))
741 as_ep = container_of(_ep, cyasgadget_ep, usb_ep_inst);
743 if (!_ep || (!as_ep->desc && (as_ep->num != 0)))
746 cy_as_dev = as_ep->dev;
747 if (!cy_as_dev->driver ||
748 cy_as_dev->gadget.speed == USB_SPEED_UNKNOWN)
751 spin_lock_irqsave(&cy_as_dev->lock, flags);
753 _req->status = -EINPROGRESS;
756 spin_unlock_irqrestore(&cy_as_dev->lock, flags);
758 /* Call Async functions */
760 #ifndef WESTBRIDGE_NDEBUG
761 cy_as_hal_print_message("<1>_cy_as_gadget: "
762 "cy_as_usb_write_data_async being called "
763 "on ep %d\n", as_ep->num);
766 ret = cy_as_usb_write_data_async(cy_as_dev->dev_handle,
767 as_ep->num, _req->length, _req->buf,
768 cy_false, cyasgadget_writecallback);
769 if (ret != CY_AS_ERROR_SUCCESS)
770 cy_as_hal_print_message("<1>_cy_as_gadget: "
771 "cy_as_usb_write_data_async failed with "
772 "error code %d\n", ret);
774 _req->status = -EALREADY;
775 } else if (as_ep->num == 0) {
777 ret = cy_as_usb_write_data_async(cy_as_dev->dev_handle,
778 as_ep->num, _req->length, _req->buf, cy_false,
779 cyasgadget_setupwritecallback);
781 if (ret != CY_AS_ERROR_SUCCESS)
782 cy_as_hal_print_message("<1>_cy_as_gadget: "
783 "cy_as_usb_write_data_async failed with error "
786 if ((cy_as_dev->outsetupreq) && (_req->length)) {
787 #ifndef WESTBRIDGE_NDEBUG
788 cy_as_hal_print_message("<1>_cy_as_gadget: "
789 "cy_as_usb_read_data_async "
790 "being called on ep %d\n",
794 ret = cy_as_usb_read_data_async (
795 cy_as_dev->dev_handle, as_ep->num,
796 cy_true, _req->length, _req->buf,
797 cyasgadget_setupreadcallback);
799 if (ret != CY_AS_ERROR_SUCCESS)
800 cy_as_hal_print_message("<1>_cy_as_gadget: "
801 "cy_as_usb_read_data_async failed with "
802 "error code %d\n", ret);
805 #ifndef WESTBRIDGE_NDEBUG
806 cy_as_hal_print_message("<1>_cy_as_gadget: "
807 "cy_as_usb_write_data_async "
808 "being called on ep %d\n",
812 ret = cy_as_usb_write_data_async(cy_as_dev->dev_handle,
813 as_ep->num, _req->length, _req->buf, cy_false,
814 cyasgadget_setupwritecallback);
816 if (ret != CY_AS_ERROR_SUCCESS)
817 cy_as_hal_print_message("<1>_cy_as_gadget: "
818 "cy_as_usb_write_data_async failed with "
819 "error code %d\n", ret);
822 } else if (list_empty(&as_ep->queue)) {
823 #ifndef WESTBRIDGE_NDEBUG
824 cy_as_hal_print_message("<1>_cy_as_gadget: "
825 "cy_as_usb_read_data_async being called since "
826 "ep queue empty%d\n", ret);
829 ret = cy_as_usb_read_data_async(cy_as_dev->dev_handle,
830 as_ep->num, cy_false, _req->length, _req->buf,
831 cyasgadget_readcallback);
832 if (ret != CY_AS_ERROR_SUCCESS)
833 cy_as_hal_print_message("<1>_cy_as_gadget: "
834 "cy_as_usb_read_data_async failed with error "
837 _req->status = -EALREADY;
840 spin_lock_irqsave(&cy_as_dev->lock, flags);
843 list_add_tail(&as_req->queue, &as_ep->queue);
845 spin_unlock_irqrestore(&cy_as_dev->lock, flags);
850 /* dequeue request */
851 static int cyasgadget_dequeue(
853 struct usb_request *_req
856 cyasgadget_ep *an_ep;
858 an_ep = container_of(_ep, cyasgadget_ep, usb_ep_inst);
861 #ifndef WESTBRIDGE_NDEBUG
862 cy_as_hal_print_message("<1>%s called\n", __func__);
865 cy_as_usb_cancel_async(dev->dev_handle, an_ep->num);
870 static int cyasgadget_set_halt(
875 cyasgadget_ep *an_ep;
878 #ifndef WESTBRIDGE_NDEBUG
879 cy_as_hal_print_message("<1>%s called\n", __func__);
882 an_ep = container_of(_ep, cyasgadget_ep, usb_ep_inst);
883 if (!_ep || (!an_ep->desc && an_ep->num != 0))
886 if (!an_ep->dev->driver || an_ep->dev->gadget.speed ==
890 if (an_ep->desc /* not ep0 */ &&
891 (an_ep->desc->bmAttributes & 0x03) == USB_ENDPOINT_XFER_ISOC)
894 if (!list_empty(&an_ep->queue))
896 else if (an_ep->is_in && value &&
897 cyasgadget_fifo_status(_ep) != 0)
901 cy_as_usb_set_stall(an_ep->dev->dev_handle,
902 an_ep->num, cyasgadget_stallcallback, 0);
904 cy_as_usb_clear_stall(an_ep->dev->dev_handle,
905 an_ep->num, cyasgadget_stallcallback, 0);
912 static int cyasgadget_fifo_status(
916 #ifndef WESTBRIDGE_NDEBUG
917 cy_as_hal_print_message("<1>%s called\n", __func__);
923 static void cyasgadget_fifo_flush(
927 #ifndef WESTBRIDGE_NDEBUG
928 cy_as_hal_print_message("<1>%s called\n", __func__);
932 static struct usb_ep_ops cyasgadget_ep_ops = {
933 .enable = cyasgadget_enable,
934 .disable = cyasgadget_disable,
935 .alloc_request = cyasgadget_alloc_request,
936 .free_request = cyasgadget_free_request,
937 .queue = cyasgadget_queue,
938 .dequeue = cyasgadget_dequeue,
939 .set_halt = cyasgadget_set_halt,
940 .fifo_status = cyasgadget_fifo_status,
941 .fifo_flush = cyasgadget_fifo_flush,
944 /*************************************************************/
945 /*This subsection contains all usb_gadget_ops cyasgadget_ops */
946 /*************************************************************/
947 static int cyasgadget_get_frame(
948 struct usb_gadget *_gadget
951 #ifndef WESTBRIDGE_NDEBUG
952 cy_as_hal_print_message("<1>%s called\n", __func__);
957 static int cyasgadget_wakeup(
958 struct usb_gadget *_gadget
961 #ifndef WESTBRIDGE_NDEBUG
962 cy_as_hal_print_message("<1>%s called\n", __func__);
967 static int cyasgadget_set_selfpowered(
968 struct usb_gadget *_gadget,
972 #ifndef WESTBRIDGE_NDEBUG
973 cy_as_hal_print_message("<1>%s called\n", __func__);
978 static int cyasgadget_pullup(
979 struct usb_gadget *_gadget,
983 struct cyasgadget *cy_as_dev;
986 #ifndef WESTBRIDGE_NDEBUG
987 cy_as_hal_print_message("<1>%s called\n", __func__);
993 cy_as_dev = container_of(_gadget, cyasgadget, gadget);
995 spin_lock_irqsave(&cy_as_dev->lock, flags);
996 cy_as_dev->softconnect = (is_on != 0);
998 cy_as_usb_connect(cy_as_dev->dev_handle, 0, 0);
1000 cy_as_usb_disconnect(cy_as_dev->dev_handle, 0, 0);
1002 spin_unlock_irqrestore(&cy_as_dev->lock, flags);
1007 static int cyasgadget_ioctl(
1008 struct usb_gadget *_gadget,
1016 cyasgadget *dev = cy_as_gadget_controller;
1018 #ifndef WESTBRIDGE_NDEBUG
1019 cy_as_hal_print_message("<1>%s called, code=%d, param=%ld\n",
1020 __func__, code, param);
1023 * extract the type and number bitfields, and don't decode
1024 * wrong cmds: return ENOTTY (inappropriate ioctl) before access_ok()
1026 if (_IOC_TYPE(code) != CYASGADGET_IOC_MAGIC) {
1027 #ifndef WESTBRIDGE_NDEBUG
1028 cy_as_hal_print_message("%s, bad magic number = 0x%x\n",
1029 __func__, _IOC_TYPE(code));
1034 if (_IOC_NR(code) > CYASGADGET_IOC_MAXNR) {
1035 #ifndef WESTBRIDGE_NDEBUG
1036 cy_as_hal_print_message("%s, bad ioctl code = 0x%x\n",
1037 __func__, _IOC_NR(code));
1043 * the direction is a bitmask, and VERIFY_WRITE catches R/W
1044 * transfers. `Type' is user-oriented, while
1045 * access_ok is kernel-oriented, so the concept of "read" and
1046 * "write" is reversed
1048 if (_IOC_DIR(code) & _IOC_READ)
1049 err = !access_ok(VERIFY_WRITE,
1050 (void __user *)param, _IOC_SIZE(code));
1051 else if (_IOC_DIR(code) & _IOC_WRITE)
1052 err = !access_ok(VERIFY_READ,
1053 (void __user *)param, _IOC_SIZE(code));
1056 cy_as_hal_print_message("%s, bad ioctl dir = 0x%x\n",
1057 __func__, _IOC_DIR(code));
1062 case CYASGADGET_GETMTPSTATUS:
1064 cy_as_gadget_ioctl_tmtp_status *usr_d =
1065 (cy_as_gadget_ioctl_tmtp_status *)param;
1067 #ifndef WESTBRIDGE_NDEBUG
1068 cy_as_hal_print_message("%s: got CYASGADGET_GETMTPSTATUS\n",
1072 retval = __put_user(dev->tmtp_send_complete,
1073 (uint32_t __user *)(&(usr_d->tmtp_send_complete)));
1074 retval = __put_user(dev->tmtp_get_complete,
1075 (uint32_t __user *)(&(usr_d->tmtp_get_complete)));
1076 retval = __put_user(dev->tmtp_need_new_blk_tbl,
1077 (uint32_t __user *)(&(usr_d->tmtp_need_new_blk_tbl)));
1079 if (copy_to_user((&(usr_d->tmtp_send_complete_data)),
1080 (&(dev->tmtp_send_complete_data)),
1081 sizeof(cy_as_gadget_ioctl_send_object)))
1084 if (copy_to_user((&(usr_d->tmtp_get_complete_data)),
1085 (&(dev->tmtp_get_complete_data)),
1086 sizeof(cy_as_gadget_ioctl_get_object)))
1090 case CYASGADGET_CLEARTMTPSTATUS:
1092 #ifndef WESTBRIDGE_NDEBUG
1093 cy_as_hal_print_message("%s got CYASGADGET_CLEARTMTPSTATUS\n",
1097 dev->tmtp_send_complete = 0;
1098 dev->tmtp_get_complete = 0;
1099 dev->tmtp_need_new_blk_tbl = 0;
1103 case CYASGADGET_INITSOJ:
1105 cy_as_gadget_ioctl_i_s_o_j_d k_d;
1106 cy_as_gadget_ioctl_i_s_o_j_d *usr_d =
1107 (cy_as_gadget_ioctl_i_s_o_j_d *)param;
1108 cy_as_mtp_block_table blk_table;
1109 struct scatterlist sg;
1110 char *alloc_filename;
1111 struct file *file_to_allocate;
1113 #ifndef WESTBRIDGE_NDEBUG
1114 cy_as_hal_print_message("%s got CYASGADGET_INITSOJ\n",
1118 memset(&blk_table, 0, sizeof(blk_table));
1120 /* Get user argument structure */
1121 if (copy_from_user(&k_d, usr_d,
1122 sizeof(cy_as_gadget_ioctl_i_s_o_j_d)))
1125 /* better use fixed size buff*/
1126 alloc_filename = kmalloc(k_d.name_length + 1, GFP_KERNEL);
1127 if (alloc_filename == NULL)
1130 /* get the filename */
1131 if (copy_from_user(alloc_filename, k_d.file_name,
1132 k_d.name_length + 1)) {
1133 #ifndef WESTBRIDGE_NDEBUG
1134 cy_as_hal_print_message("%s: CYASGADGET_INITSOJ, "
1135 "copy file name from user space failed\n",
1138 kfree(alloc_filename);
1142 file_to_allocate = filp_open(alloc_filename, O_RDWR, 0);
1144 if (!IS_ERR(file_to_allocate)) {
1146 struct address_space *mapping =
1147 file_to_allocate->f_mapping;
1148 const struct address_space_operations *a_ops =
1150 struct inode *inode = mapping->host;
1151 struct inode *alloc_inode =
1152 file_to_allocate->f_path.dentry->d_inode;
1153 uint32_t num_clusters = 0;
1154 struct buffer_head bh;
1159 #ifndef WESTBRIDGE_NDEBUG
1160 cy_as_hal_print_message("%s: fhandle is OK, "
1161 "calling vfs_getattr\n", __func__);
1164 ret_stat = vfs_getattr(file_to_allocate->f_path.mnt,
1165 file_to_allocate->f_path.dentry, &stat);
1167 #ifndef WESTBRIDGE_NDEBUG
1168 cy_as_hal_print_message("%s: returned from "
1169 "vfs_getattr() stat->blksize=0x%lx\n",
1170 __func__, stat.blksize);
1173 /* TODO: get this from disk properties
1174 * (from blockdevice)*/
1175 #define SECTOR_SIZE 512
1176 if (stat.blksize != 0) {
1177 num_clusters = (k_d.num_bytes) / SECTOR_SIZE;
1179 if (((k_d.num_bytes) % SECTOR_SIZE) != 0)
1182 goto initsoj_safe_exit;
1187 /* block size is arbitrary , we'll use sector size*/
1188 bh.b_size = SECTOR_SIZE;
1192 /* clear dirty pages in page cache
1193 * (if were any allocated) */
1194 nr_pages = (k_d.num_bytes) / (PAGE_CACHE_SIZE);
1196 if (((k_d.num_bytes) % (PAGE_CACHE_SIZE)) != 0)
1199 #ifndef WESTBRIDGE_NDEBUG
1200 /*check out how many pages where actually allocated */
1201 if (mapping->nrpages != nr_pages)
1202 cy_as_hal_print_message("%s mpage_cleardirty "
1203 "mapping->nrpages %d != num_pages %d\n",
1204 __func__, (int) mapping->nrpages,
1207 cy_as_hal_print_message("%s: calling "
1208 "mpage_cleardirty() "
1209 "for %d pages\n", __func__, nr_pages);
1212 ret_stat = mpage_cleardirty(mapping, nr_pages);
1214 /*fill up the the block table from the addr mapping */
1216 int8_t blk_table_idx = -1;
1217 uint32_t file_block_idx = 0;
1218 uint32_t last_blk_addr_map = 0,
1219 curr_blk_addr_map = 0;
1221 #ifndef WESTBRIDGE_NDEBUG
1222 if (alloc_inode->i_bytes == 0)
1223 cy_as_hal_print_message(
1224 "%s: alloc_inode->ibytes =0\n",
1228 /* iterate through the list of
1229 * blocks (not clusters)*/
1230 for (file_block_idx = 0;
1231 file_block_idx < num_clusters
1232 /*inode->i_bytes*/; file_block_idx++) {
1234 /* returns starting sector number */
1236 a_ops->bmap(mapping,
1239 /*no valid mapping*/
1240 if (curr_blk_addr_map == 0) {
1241 #ifndef WESTBRIDGE_NDEBUG
1242 cy_as_hal_print_message(
1244 "mapping\n", __func__);
1247 } else if (curr_blk_addr_map !=
1248 (last_blk_addr_map + 1) ||
1249 (blk_table.num_blocks
1250 [blk_table_idx] == 65535)) {
1252 /* next table entry */
1254 /* starting sector of a
1255 * scattered cluster*/
1256 blk_table.start_blocks
1259 /* ++ num of blocks in cur
1262 num_blocks[blk_table_idx]++;
1264 #ifndef WESTBRIDGE_NDEBUG
1265 if (file_block_idx != 0)
1266 cy_as_hal_print_message(
1268 "entry:%d required\n",
1272 /*add contiguous block*/
1273 blk_table.num_blocks
1275 } /*if (curr_blk_addr_map == 0)*/
1277 last_blk_addr_map = curr_blk_addr_map;
1278 } /* end for (file_block_idx = 0; file_block_idx
1279 < inode->i_bytes;) */
1281 #ifndef WESTBRIDGE_NDEBUG
1282 /*print result for verification*/
1285 cy_as_hal_print_message(
1286 "%s: print block table "
1289 for (i = 0; i <= blk_table_idx; i++) {
1290 cy_as_hal_print_message(
1291 "<1> %d 0x%x 0x%x\n", i,
1292 blk_table.start_blocks[i],
1293 blk_table.num_blocks[i]);
1298 /* copy the block table to user
1299 * space (for debug purposes) */
1300 retval = __put_user(
1301 blk_table.start_blocks[blk_table_idx],
1303 (&(usr_d->blk_addr_p)));
1305 retval = __put_user(
1306 blk_table.num_blocks[blk_table_idx],
1308 (&(usr_d->blk_count_p)));
1311 retval = __put_user(blk_table_idx,
1313 (&(usr_d->item_count)));
1315 } /*end if (a_ops->bmap)*/
1317 filp_close(file_to_allocate, NULL);
1319 dev->tmtp_send_complete = 0;
1320 dev->tmtp_need_new_blk_tbl = 0;
1322 #ifndef WESTBRIDGE_NDEBUG
1323 cy_as_hal_print_message(
1324 "%s: calling cy_as_mtp_init_send_object()\n",
1327 sg_init_one(&sg, &blk_table, sizeof(blk_table));
1328 ret_stat = cy_as_mtp_init_send_object(dev->dev_handle,
1329 (cy_as_mtp_block_table *)&sg,
1330 k_d.num_bytes, 0, 0);
1331 #ifndef WESTBRIDGE_NDEBUG
1332 cy_as_hal_print_message("%s: returned from "
1333 "cy_as_mtp_init_send_object()\n", __func__);
1337 #ifndef WESTBRIDGE_NDEBUG
1339 cy_as_hal_print_message(
1340 "%s: failed to allocate the file %s\n",
1341 __func__, alloc_filename);
1342 } /* end if (file_to_allocate)*/
1344 kfree(alloc_filename);
1347 retval = __put_user(ret_stat,
1348 (uint32_t __user *)(&(usr_d->ret_val)));
1352 case CYASGADGET_INITGOJ:
1354 cy_as_gadget_ioctl_i_g_o_j_d k_d;
1355 cy_as_gadget_ioctl_i_g_o_j_d *usr_d =
1356 (cy_as_gadget_ioctl_i_g_o_j_d *)param;
1357 cy_as_mtp_block_table blk_table;
1358 struct scatterlist sg;
1360 struct file *file_to_map;
1362 #ifndef WESTBRIDGE_NDEBUG
1363 cy_as_hal_print_message(
1364 "%s: got CYASGADGET_INITGOJ\n",
1368 memset(&blk_table, 0, sizeof(blk_table));
1370 /* Get user argument sturcutre */
1371 if (copy_from_user(&k_d, usr_d,
1372 sizeof(cy_as_gadget_ioctl_i_g_o_j_d)))
1375 map_filename = kmalloc(k_d.name_length + 1, GFP_KERNEL);
1376 if (map_filename == NULL)
1378 if (copy_from_user(map_filename, k_d.file_name,
1379 k_d.name_length + 1)) {
1380 #ifndef WESTBRIDGE_NDEBUG
1381 cy_as_hal_print_message("%s: copy file name from "
1382 "user space failed\n", __func__);
1384 kfree(map_filename);
1388 #ifndef WESTBRIDGE_NDEBUG
1389 cy_as_hal_print_message("<*>%s: opening %s for kernel "
1390 "mode access map\n", __func__, map_filename);
1392 file_to_map = filp_open(map_filename, O_RDWR, 0);
1394 struct address_space *mapping = file_to_map->f_mapping;
1395 const struct address_space_operations
1396 *a_ops = mapping->a_ops;
1397 struct inode *inode = mapping->host;
1399 int8_t blk_table_idx = -1;
1400 uint32_t file_block_idx = 0;
1401 uint32_t last_blk_addr_map = 0, curr_blk_addr_map = 0;
1403 /*verify operation exists*/
1405 #ifndef WESTBRIDGE_NDEBUG
1406 cy_as_hal_print_message(
1407 "<*>%s: bmap found, i_bytes=0x%x, "
1408 "i_size=0x%x, i_blocks=0x%x\n",
1409 __func__, inode->i_bytes,
1410 (unsigned int) inode->i_size,
1411 (unsigned int) inode->i_blocks);
1414 k_d.num_bytes = inode->i_size;
1416 #ifndef WESTBRIDGE_NDEBUG
1417 cy_as_hal_print_message(
1418 "<*>%s: k_d.num_bytes=0x%x\n",
1419 __func__, k_d.num_bytes);
1422 for (file_block_idx = 0;
1423 file_block_idx < inode->i_size;
1426 a_ops->bmap(mapping,
1429 if (curr_blk_addr_map == 0) {
1430 /*no valid mapping*/
1431 #ifndef WESTBRIDGE_NDEBUG
1432 cy_as_hal_print_message(
1434 "mapping\n", __func__);
1437 } else if (curr_blk_addr_map !=
1438 (last_blk_addr_map + 1)) {
1439 /*non-contiguous break*/
1441 blk_table.start_blocks
1444 blk_table.num_blocks
1446 #ifndef WESTBRIDGE_NDEBUG
1447 cy_as_hal_print_message(
1453 /*add contiguous block*/
1454 blk_table.num_blocks
1457 last_blk_addr_map = curr_blk_addr_map;
1460 /*print result for verification*/
1461 #ifndef WESTBRIDGE_NDEBUG
1465 for (i = 0; i <= blk_table_idx; i++) {
1466 cy_as_hal_print_message(
1467 "%s %d 0x%x 0x%x\n",
1469 blk_table.start_blocks[i],
1470 blk_table.num_blocks[i]);
1475 #ifndef WESTBRIDGE_NDEBUG
1476 cy_as_hal_print_message(
1477 "%s: could not find "
1478 "a_ops->bmap\n", __func__);
1483 filp_close(file_to_map, NULL);
1485 dev->tmtp_get_complete = 0;
1486 dev->tmtp_need_new_blk_tbl = 0;
1488 ret_stat = __put_user(
1489 blk_table.start_blocks[blk_table_idx],
1490 (uint32_t __user *)(&(usr_d->blk_addr_p)));
1492 ret_stat = __put_user(
1493 blk_table.num_blocks[blk_table_idx],
1494 (uint32_t __user *)(&(usr_d->blk_count_p)));
1496 sg_init_one(&sg, &blk_table, sizeof(blk_table));
1498 #ifndef WESTBRIDGE_NDEBUG
1499 cy_as_hal_print_message(
1500 "%s: calling cy_as_mtp_init_get_object() "
1501 "start=0x%x, num =0x%x, tid=0x%x, "
1504 blk_table.start_blocks[0],
1505 blk_table.num_blocks[0],
1510 ret_stat = cy_as_mtp_init_get_object(
1512 (cy_as_mtp_block_table *)&sg,
1513 k_d.num_bytes, k_d.tid, 0, 0);
1514 if (ret_stat != CY_AS_ERROR_SUCCESS) {
1515 #ifndef WESTBRIDGE_NDEBUG
1516 cy_as_hal_print_message(
1517 "%s: cy_as_mtp_init_get_object "
1518 "failed ret_stat=0x%x\n",
1519 __func__, ret_stat);
1523 #ifndef WESTBRIDGE_NDEBUG
1525 cy_as_hal_print_message(
1526 "%s: failed to open file %s\n",
1527 __func__, map_filename);
1530 kfree(map_filename);
1533 retval = __put_user(ret_stat, (uint32_t __user *)
1534 (&(usr_d->ret_val)));
1537 case CYASGADGET_CANCELSOJ:
1539 cy_as_gadget_ioctl_cancel *usr_d =
1540 (cy_as_gadget_ioctl_cancel *)param;
1542 #ifndef WESTBRIDGE_NDEBUG
1543 cy_as_hal_print_message(
1544 "%s: got CYASGADGET_CANCELSOJ\n",
1548 ret_stat = cy_as_mtp_cancel_send_object(dev->dev_handle, 0, 0);
1550 retval = __put_user(ret_stat, (uint32_t __user *)
1551 (&(usr_d->ret_val)));
1554 case CYASGADGET_CANCELGOJ:
1556 cy_as_gadget_ioctl_cancel *usr_d =
1557 (cy_as_gadget_ioctl_cancel *)param;
1559 #ifndef WESTBRIDGE_NDEBUG
1560 cy_as_hal_print_message("%s: got CYASGADGET_CANCELGOJ\n",
1564 ret_stat = cy_as_mtp_cancel_get_object(dev->dev_handle, 0, 0);
1566 retval = __put_user(ret_stat,
1567 (uint32_t __user *)(&(usr_d->ret_val)));
1572 #ifndef WESTBRIDGE_NDEBUG
1573 cy_as_hal_print_message("%s: unknown ioctl received: %d\n",
1576 cy_as_hal_print_message("%s: known codes:\n"
1577 "CYASGADGET_GETMTPSTATUS=%d\n"
1578 "CYASGADGET_CLEARTMTPSTATUS=%d\n"
1579 "CYASGADGET_INITSOJ=%d\n"
1580 "CYASGADGET_INITGOJ=%d\n"
1581 "CYASGADGET_CANCELSOJ=%d\n"
1582 "CYASGADGET_CANCELGOJ=%d\n",
1584 CYASGADGET_GETMTPSTATUS,
1585 CYASGADGET_CLEARTMTPSTATUS,
1588 CYASGADGET_CANCELSOJ,
1589 CYASGADGET_CANCELGOJ);
1598 static int cyasgadget_start(struct usb_gadget_driver *driver,
1599 int (*bind)(struct usb_gadget *));
1600 static int cyasgadget_stop(struct usb_gadget_driver *driver);
1602 static const struct usb_gadget_ops cyasgadget_ops = {
1603 .get_frame = cyasgadget_get_frame,
1604 .wakeup = cyasgadget_wakeup,
1605 .set_selfpowered = cyasgadget_set_selfpowered,
1606 .pullup = cyasgadget_pullup,
1607 .ioctl = cyasgadget_ioctl,
1608 .start = cyasgadget_start,
1609 .stop = cyasgadget_stop,
1613 /* keeping it simple:
1614 * - one bus driver, initted first;
1615 * - one function driver, initted second
1617 * most of the work to support multiple controllers would
1618 * be to associate this gadget driver with all of them, or
1619 * perhaps to bind specific drivers to specific devices.
1622 static void cyas_ep_reset(
1623 cyasgadget_ep *an_ep
1626 #ifndef WESTBRIDGE_NDEBUG
1627 cy_as_hal_print_message("<1>%s called\n", __func__);
1631 INIT_LIST_HEAD(&an_ep->queue);
1636 an_ep->usb_ep_inst.maxpacket = ~0;
1637 an_ep->usb_ep_inst.ops = &cyasgadget_ep_ops;
1640 static void cyas_usb_reset(
1641 cyasgadget *cy_as_dev
1644 cy_as_return_status_t ret;
1645 cy_as_usb_enum_control config;
1647 #ifndef WESTBRIDGE_NDEBUG
1648 cy_as_device *dev_p = (cy_as_device *)cy_as_dev->dev_handle;
1650 cy_as_hal_print_message("<1>%s called mtp_firmware=0x%x\n",
1651 __func__, dev_p->is_mtp_firmware);
1654 ret = cy_as_misc_release_resource(cy_as_dev->dev_handle,
1656 if (ret != CY_AS_ERROR_SUCCESS && ret !=
1657 CY_AS_ERROR_RESOURCE_NOT_OWNED) {
1658 cy_as_hal_print_message("<1>_cy_as_gadget: cannot "
1659 "release usb resource: failed with error code %d\n",
1664 cy_as_dev->gadget.speed = USB_SPEED_HIGH;
1666 ret = cy_as_usb_start(cy_as_dev->dev_handle, 0, 0);
1667 if (ret != CY_AS_ERROR_SUCCESS) {
1668 cy_as_hal_print_message("<1>_cy_as_gadget: "
1669 "cy_as_usb_start failed with error code %d\n",
1673 /* P port will do enumeration, not West Bridge */
1674 config.antioch_enumeration = cy_false;
1675 /* 1 2 : 1-BUS_NUM , 2:Storage_device number, SD - is bus 1*/
1677 /* TODO: add module param to enumerate mass storage */
1678 config.mass_storage_interface = 0;
1681 ret = cy_as_mtp_start(cy_as_dev->dev_handle,
1682 cy_as_gadget_mtp_event_callback, 0, 0);
1683 if (ret == CY_AS_ERROR_SUCCESS) {
1684 cy_as_hal_print_message("MTP start passed, enumerating "
1686 config.mtp_interface = append_mtp;
1687 /*Do not enumerate NAND storage*/
1688 config.devices_to_enumerate[0][0] = cy_false;
1690 /*enumerate SD storage as MTP*/
1691 config.devices_to_enumerate[1][0] = cy_true;
1694 cy_as_hal_print_message("MTP start not attempted, not "
1695 "enumerating MTP interface\n");
1696 config.mtp_interface = 0;
1697 /* enumerate mass storage based on module parameters */
1698 config.devices_to_enumerate[0][0] = msc_enum_bus_0;
1699 config.devices_to_enumerate[1][0] = msc_enum_bus_1;
1702 ret = cy_as_usb_set_enum_config(cy_as_dev->dev_handle,
1704 if (ret != CY_AS_ERROR_SUCCESS) {
1705 cy_as_hal_print_message("<1>_cy_as_gadget: "
1706 "cy_as_usb_set_enum_config failed with error "
1711 cy_as_usb_set_physical_configuration(cy_as_dev->dev_handle, 1);
1715 static void cyas_usb_reinit(
1716 cyasgadget *cy_as_dev
1720 cyasgadget_ep *an_ep_p;
1721 cy_as_return_status_t ret;
1722 cy_as_device *dev_p = (cy_as_device *)cy_as_dev->dev_handle;
1724 INIT_LIST_HEAD(&cy_as_dev->gadget.ep_list);
1726 #ifndef WESTBRIDGE_NDEBUG
1727 cy_as_hal_print_message("<1>%s called, is_mtp_firmware = "
1728 "0x%x\n", __func__, dev_p->is_mtp_firmware);
1731 /* Init the end points */
1732 for (index = 1; index <= 15; index++) {
1733 an_ep_p = &cy_as_dev->an_gadget_ep[index];
1734 cyas_ep_reset(an_ep_p);
1735 an_ep_p->usb_ep_inst.name = cy_as_ep_names[index];
1736 an_ep_p->dev = cy_as_dev;
1737 an_ep_p->num = index;
1738 memset(&an_ep_p->cyepconfig, 0, sizeof(an_ep_p->cyepconfig));
1740 /* EP0, EPs 2,4,6,8 need not be added */
1741 if ((index <= 8) && (index % 2 == 0) &&
1742 (!dev_p->is_mtp_firmware)) {
1743 /* EP0 is 64 and EPs 2,4,6,8 not allowed */
1744 cy_as_dev->an_gadget_ep[index].fifo_size = 0;
1747 an_ep_p->fifo_size = 64;
1749 an_ep_p->fifo_size = 512;
1750 list_add_tail(&an_ep_p->usb_ep_inst.ep_list,
1751 &cy_as_dev->gadget.ep_list);
1754 /* need to setendpointconfig before usb connect, this is not
1755 * quite compatible with gadget methodology (ep_enable called
1756 * by gadget after connect), therefore need to set config in
1757 * initialization and verify compatibility in ep_enable,
1758 * kick up error otherwise*/
1759 an_ep_p = &cy_as_dev->an_gadget_ep[3];
1760 an_ep_p->cyepconfig.enabled = cy_true;
1761 an_ep_p->cyepconfig.dir = cy_as_usb_out;
1762 an_ep_p->cyepconfig.type = cy_as_usb_bulk;
1763 an_ep_p->cyepconfig.size = 0;
1764 an_ep_p->cyepconfig.physical = 1;
1765 ret = cy_as_usb_set_end_point_config(an_ep_p->dev->dev_handle,
1766 3, &an_ep_p->cyepconfig);
1767 if (ret != CY_AS_ERROR_SUCCESS) {
1768 cy_as_hal_print_message("cy_as_usb_set_end_point_config "
1769 "failed with error code %d\n", ret);
1772 cy_as_usb_set_stall(an_ep_p->dev->dev_handle, 3, 0, 0);
1774 an_ep_p = &cy_as_dev->an_gadget_ep[5];
1775 an_ep_p->cyepconfig.enabled = cy_true;
1776 an_ep_p->cyepconfig.dir = cy_as_usb_in;
1777 an_ep_p->cyepconfig.type = cy_as_usb_bulk;
1778 an_ep_p->cyepconfig.size = 0;
1779 an_ep_p->cyepconfig.physical = 2;
1780 ret = cy_as_usb_set_end_point_config(an_ep_p->dev->dev_handle,
1781 5, &an_ep_p->cyepconfig);
1782 if (ret != CY_AS_ERROR_SUCCESS) {
1783 cy_as_hal_print_message("cy_as_usb_set_end_point_config "
1784 "failed with error code %d\n", ret);
1787 cy_as_usb_set_stall(an_ep_p->dev->dev_handle, 5, 0, 0);
1789 an_ep_p = &cy_as_dev->an_gadget_ep[9];
1790 an_ep_p->cyepconfig.enabled = cy_true;
1791 an_ep_p->cyepconfig.dir = cy_as_usb_in;
1792 an_ep_p->cyepconfig.type = cy_as_usb_bulk;
1793 an_ep_p->cyepconfig.size = 0;
1794 an_ep_p->cyepconfig.physical = 4;
1795 ret = cy_as_usb_set_end_point_config(an_ep_p->dev->dev_handle,
1796 9, &an_ep_p->cyepconfig);
1797 if (ret != CY_AS_ERROR_SUCCESS) {
1798 cy_as_hal_print_message("cy_as_usb_set_end_point_config "
1799 "failed with error code %d\n", ret);
1802 cy_as_usb_set_stall(an_ep_p->dev->dev_handle, 9, 0, 0);
1804 if (dev_p->mtp_count != 0) {
1805 /* these need to be set for compatibility with
1806 * the gadget_enable logic */
1807 an_ep_p = &cy_as_dev->an_gadget_ep[2];
1808 an_ep_p->cyepconfig.enabled = cy_true;
1809 an_ep_p->cyepconfig.dir = cy_as_usb_out;
1810 an_ep_p->cyepconfig.type = cy_as_usb_bulk;
1811 an_ep_p->cyepconfig.size = 0;
1812 an_ep_p->cyepconfig.physical = 0;
1813 cy_as_usb_set_stall(an_ep_p->dev->dev_handle, 2, 0, 0);
1815 an_ep_p = &cy_as_dev->an_gadget_ep[6];
1816 an_ep_p->cyepconfig.enabled = cy_true;
1817 an_ep_p->cyepconfig.dir = cy_as_usb_in;
1818 an_ep_p->cyepconfig.type = cy_as_usb_bulk;
1819 an_ep_p->cyepconfig.size = 0;
1820 an_ep_p->cyepconfig.physical = 0;
1821 cy_as_usb_set_stall(an_ep_p->dev->dev_handle, 6, 0, 0);
1824 cyas_ep_reset(&cy_as_dev->an_gadget_ep[0]);
1825 cy_as_dev->an_gadget_ep[0].usb_ep_inst.name = cy_as_ep_names[0];
1826 cy_as_dev->an_gadget_ep[0].dev = cy_as_dev;
1827 cy_as_dev->an_gadget_ep[0].num = 0;
1828 cy_as_dev->an_gadget_ep[0].fifo_size = 64;
1830 cy_as_dev->an_gadget_ep[0].usb_ep_inst.maxpacket = 64;
1831 cy_as_dev->gadget.ep0 = &cy_as_dev->an_gadget_ep[0].usb_ep_inst;
1832 cy_as_dev->an_gadget_ep[0].stopped = 0;
1833 INIT_LIST_HEAD(&cy_as_dev->gadget.ep0->ep_list);
1836 static void cyas_ep0_start(
1840 cy_as_return_status_t ret;
1842 #ifndef WESTBRIDGE_NDEBUG
1843 cy_as_hal_print_message("<1>%s called\n", __func__);
1846 ret = cy_as_usb_register_callback(dev->dev_handle,
1847 cy_as_gadget_usb_event_callback);
1848 if (ret != CY_AS_ERROR_SUCCESS) {
1849 #ifndef WESTBRIDGE_NDEBUG
1850 cy_as_hal_print_message("%s: cy_as_usb_register_callback "
1851 "failed with error code %d\n", __func__, ret);
1856 ret = cy_as_usb_commit_config(dev->dev_handle, 0, 0);
1857 if (ret != CY_AS_ERROR_SUCCESS) {
1858 #ifndef WESTBRIDGE_NDEBUG
1859 cy_as_hal_print_message("%s: cy_as_usb_commit_config "
1860 "failed with error code %d\n", __func__, ret);
1865 #ifndef WESTBRIDGE_NDEBUG
1866 cy_as_hal_print_message("%s: cy_as_usb_commit_config "
1867 "message sent\n", __func__);
1870 ret = cy_as_usb_connect(dev->dev_handle, 0, 0);
1871 if (ret != CY_AS_ERROR_SUCCESS) {
1872 #ifndef WESTBRIDGE_NDEBUG
1873 cy_as_hal_print_message("%s: cy_as_usb_connect failed "
1874 "with error code %d\n", __func__, ret);
1879 #ifndef WESTBRIDGE_NDEBUG
1880 cy_as_hal_print_message("%s: cy_as_usb_connect message "
1881 "sent\n", __func__);
1886 * When a driver is successfully registered, it will receive
1887 * control requests including set_configuration(), which enables
1888 * non-control requests. then usb traffic follows until a
1889 * disconnect is reported. then a host may connect again, or
1890 * the driver might get unbound.
1892 static int cyasgadget_start(struct usb_gadget_driver *driver,
1893 int (*bind)(struct usb_gadget *))
1895 cyasgadget *dev = cy_as_gadget_controller;
1898 #ifndef WESTBRIDGE_NDEBUG
1899 cy_as_hal_print_message("<1>%s called driver=0x%x\n",
1900 __func__, (unsigned int) driver);
1903 /* insist on high speed support from the driver, since
1904 * "must not be used in normal operation"
1918 /* hook up the driver ... */
1919 dev->softconnect = 1;
1920 driver->driver.bus = NULL;
1921 dev->driver = driver;
1922 dev->gadget.dev.driver = &driver->driver;
1924 /* Do the needful */
1925 cyas_usb_reset(dev); /* External usb */
1926 cyas_usb_reinit(dev); /* Internal */
1928 retval = bind(&dev->gadget);
1930 #ifndef WESTBRIDGE_NDEBUG
1931 cy_as_hal_print_message("%s bind to driver %s --> %d\n",
1932 __func__, driver->driver.name, retval);
1936 dev->gadget.dev.driver = NULL;
1940 /* ... then enable host detection and ep0; and we're ready
1941 * for set_configuration as well as eventual disconnect.
1943 cyas_ep0_start(dev);
1948 static void cyasgadget_nuke(
1949 cyasgadget_ep *an_ep
1952 cyasgadget *dev = cy_as_gadget_controller;
1954 #ifndef WESTBRIDGE_NDEBUG
1955 cy_as_hal_print_message("<1>%s called\n", __func__);
1958 cy_as_usb_cancel_async(dev->dev_handle, an_ep->num);
1961 while (!list_empty(&an_ep->queue)) {
1962 cyasgadget_req *an_req = list_entry
1963 (an_ep->queue.next, cyasgadget_req, queue);
1964 list_del_init(&an_req->queue);
1965 an_req->req.status = -ESHUTDOWN;
1966 an_req->req.complete(&an_ep->usb_ep_inst, &an_req->req);
1970 static void cyasgadget_stop_activity(
1972 struct usb_gadget_driver *driver
1977 #ifndef WESTBRIDGE_NDEBUG
1978 cy_as_hal_print_message("<1>%s called\n", __func__);
1981 /* don't disconnect if it's not connected */
1982 if (dev->gadget.speed == USB_SPEED_UNKNOWN)
1985 if (spin_is_locked(&dev->lock))
1986 spin_unlock(&dev->lock);
1988 /* Stop hardware; prevent new request submissions;
1989 * and kill any outstanding requests.
1991 cy_as_usb_disconnect(dev->dev_handle, 0, 0);
1993 for (index = 3; index <= 7; index += 2) {
1994 cyasgadget_ep *an_ep_p = &dev->an_gadget_ep[index];
1995 cyasgadget_nuke(an_ep_p);
1998 for (index = 9; index <= 15; index++) {
1999 cyasgadget_ep *an_ep_p = &dev->an_gadget_ep[index];
2000 cyasgadget_nuke(an_ep_p);
2003 /* report disconnect; the driver is already quiesced */
2005 driver->disconnect(&dev->gadget);
2007 #ifndef WESTBRIDGE_NDEBUG
2008 cy_as_hal_print_message("cy_as_usb_disconnect returned success");
2012 cy_as_usb_stop(dev->dev_handle, 0, 0);
2014 #ifndef WESTBRIDGE_NDEBUG
2015 cy_as_hal_print_message("cy_as_usb_stop returned success");
2019 static int cyasgadget_stop(
2020 struct usb_gadget_driver *driver
2023 cyasgadget *dev = cy_as_gadget_controller;
2025 #ifndef WESTBRIDGE_NDEBUG
2026 cy_as_hal_print_message("<1>%s called\n", __func__);
2032 if (!driver || driver != dev->driver)
2035 cyasgadget_stop_activity(dev, driver);
2037 driver->unbind(&dev->gadget);
2038 dev->gadget.dev.driver = NULL;
2041 #ifndef WESTBRIDGE_NDEBUG
2042 cy_as_hal_print_message("unregistered driver '%s'\n",
2043 driver->driver.name);
2049 static void cyas_gadget_release(
2053 cyasgadget *dev = dev_get_drvdata(_dev);
2055 #ifndef WESTBRIDGE_NDEBUG
2056 cy_as_hal_print_message("<1>%s called\n", __func__);
2062 /* DeInitialize gadget driver */
2063 static void cyasgadget_deinit(
2064 cyasgadget *cy_as_dev
2067 #ifndef WESTBRIDGE_NDEBUG
2068 cy_as_hal_print_message("<1>_cy_as_gadget deinitialize called\n");
2072 #ifndef WESTBRIDGE_NDEBUG
2073 cy_as_hal_print_message("<1>_cy_as_gadget_deinit: "
2074 "invalid cyasgadget device\n");
2078 usb_del_gadget_udc(&cy_as_dev->gadget);
2080 if (cy_as_dev->driver) {
2081 /* should have been done already by driver model core */
2082 #ifndef WESTBRIDGE_NDEBUG
2083 cy_as_hal_print_message("<1> cy_as_gadget: '%s' "
2084 "is still registered\n",
2085 cy_as_dev->driver->driver.name);
2087 usb_gadget_unregister_driver(cy_as_dev->driver);
2091 cy_as_gadget_controller = NULL;
2094 /* Initialize gadget driver */
2095 static int cyasgadget_initialize(void)
2097 cyasgadget *cy_as_dev = 0;
2100 #ifndef WESTBRIDGE_NDEBUG
2101 cy_as_hal_print_message("<1>_cy_as_gadget [V1.1] initialize called\n");
2104 if (cy_as_gadget_controller != 0) {
2105 cy_as_hal_print_message("<1> cy_as_gadget: the device has "
2106 "already been initilaized. ignoring\n");
2110 cy_as_dev = kzalloc(sizeof(cyasgadget), GFP_ATOMIC);
2111 if (cy_as_dev == NULL) {
2112 cy_as_hal_print_message("<1> cy_as_gadget: memory "
2113 "allocation failed\n");
2117 spin_lock_init(&cy_as_dev->lock);
2118 cy_as_dev->gadget.ops = &cyasgadget_ops;
2119 cy_as_dev->gadget.is_dualspeed = 1;
2121 /* the "gadget" abstracts/virtualizes the controller */
2122 /*strcpy(cy_as_dev->gadget.dev.bus_id, "cyasgadget");*/
2123 cy_as_dev->gadget.dev.release = cyas_gadget_release;
2124 cy_as_dev->gadget.name = cy_as_driver_name;
2126 /* Get the device handle */
2127 cy_as_dev->dev_handle = cyasdevice_getdevhandle();
2128 if (0 == cy_as_dev->dev_handle) {
2130 cy_as_hal_print_message("<1> cy_as_gadget: "
2131 "no west bridge device\n");
2137 /* We are done now */
2138 cy_as_gadget_controller = cy_as_dev;
2140 pdev is the platform_device or pci_device or whatever is used here
2141 retval = usb_add_gadget_udc(&pdev->dev, &cy_as_dev->gadget);
2149 * in case of an error
2153 cyasgadget_deinit(cy_as_dev);
2158 static int __init cyas_init(void)
2162 init_res = cyasgadget_initialize();
2164 if (init_res != 0) {
2165 printk(KERN_WARNING "<1> gadget ctl instance "
2166 "init error:%d\n", init_res);
2168 /* force -E/0 linux convention */
2169 init_res = init_res * -1;
2175 module_init(cyas_init);
2177 static void __exit cyas_cleanup(void)
2179 if (cy_as_gadget_controller != NULL)
2180 cyasgadget_deinit(cy_as_gadget_controller);
2182 module_exit(cyas_cleanup);
2185 MODULE_LICENSE("GPL");
2186 MODULE_DESCRIPTION(CY_AS_DRIVER_DESC);
2187 MODULE_AUTHOR("cypress semiconductor");