| 1 | /*
|
|---|
| 2 | * Copyright (c) 2011 Jan Vesely
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 | /** @addtogroup usb
|
|---|
| 29 | * @{
|
|---|
| 30 | */
|
|---|
| 31 | /** @file
|
|---|
| 32 | * @brief UHCI driver
|
|---|
| 33 | */
|
|---|
| 34 | #include <usb/debug.h>
|
|---|
| 35 |
|
|---|
| 36 | #include "transfer_descriptor.h"
|
|---|
| 37 |
|
|---|
| 38 | void transfer_descriptor_init(transfer_descriptor_t *instance,
|
|---|
| 39 | int error_count, size_t size, bool isochronous, usb_target_t target,
|
|---|
| 40 | int pid, void *buffer)
|
|---|
| 41 | {
|
|---|
| 42 | assert(instance);
|
|---|
| 43 |
|
|---|
| 44 | instance->next =
|
|---|
| 45 | 0 | LINK_POINTER_TERMINATE_FLAG;
|
|---|
| 46 |
|
|---|
| 47 |
|
|---|
| 48 | assert(size < 1024);
|
|---|
| 49 | instance->status = 0
|
|---|
| 50 | | ((error_count & TD_STATUS_ERROR_COUNT_MASK) << TD_STATUS_ERROR_COUNT_POS)
|
|---|
| 51 | | TD_STATUS_ERROR_ACTIVE;
|
|---|
| 52 |
|
|---|
| 53 | instance->device = 0
|
|---|
| 54 | | (((size - 1) & TD_DEVICE_MAXLEN_MASK) << TD_DEVICE_MAXLEN_POS)
|
|---|
| 55 | | ((target.address & TD_DEVICE_ADDRESS_MASK) << TD_DEVICE_ADDRESS_POS)
|
|---|
| 56 | | ((target.endpoint & TD_DEVICE_ENDPOINT_MASK) << TD_DEVICE_ENDPOINT_POS)
|
|---|
| 57 | | ((pid & TD_DEVICE_PID_MASK) << TD_DEVICE_PID_POS);
|
|---|
| 58 |
|
|---|
| 59 | instance->buffer_ptr = 0;
|
|---|
| 60 |
|
|---|
| 61 | instance->next_va = NULL;
|
|---|
| 62 | instance->callback = NULL;
|
|---|
| 63 |
|
|---|
| 64 | if (size) {
|
|---|
| 65 | instance->buffer_ptr = (uintptr_t)addr_to_phys(buffer);
|
|---|
| 66 | }
|
|---|
| 67 |
|
|---|
| 68 | usb_log_info("Created TD: %X:%X:%X:%X(%p).\n",
|
|---|
| 69 | instance->next, instance->status, instance->device,
|
|---|
| 70 | instance->buffer_ptr, buffer);
|
|---|
| 71 | #if 0
|
|---|
| 72 | if (size) {
|
|---|
| 73 | unsigned char * buff = buffer;
|
|---|
| 74 | uhci_print_verbose("TD Buffer dump(%p-%dB): ", buffer, size);
|
|---|
| 75 | unsigned i = 0;
|
|---|
| 76 | /* TODO: Verbose? */
|
|---|
| 77 | for (; i < size; ++i) {
|
|---|
| 78 | printf((i & 1) ? "%x " : "%x", buff[i]);
|
|---|
| 79 | }
|
|---|
| 80 | printf("\n");
|
|---|
| 81 | }
|
|---|
| 82 | #endif
|
|---|
| 83 | }
|
|---|
| 84 |
|
|---|
| 85 | static inline usb_transaction_outcome_t convert_outcome(uint32_t status)
|
|---|
| 86 | {
|
|---|
| 87 | /*TODO: refactor into something sane */
|
|---|
| 88 | /*TODO: add additional usb_errors to usb_outcome_t */
|
|---|
| 89 |
|
|---|
| 90 | if (status & TD_STATUS_ERROR_STALLED)
|
|---|
| 91 | return USB_OUTCOME_CRCERROR;
|
|---|
| 92 |
|
|---|
| 93 | if (status & TD_STATUS_ERROR_BUFFER)
|
|---|
| 94 | return USB_OUTCOME_CRCERROR;
|
|---|
| 95 |
|
|---|
| 96 | if (status & TD_STATUS_ERROR_BABBLE)
|
|---|
| 97 | return USB_OUTCOME_BABBLE;
|
|---|
| 98 |
|
|---|
| 99 | if (status & TD_STATUS_ERROR_NAK)
|
|---|
| 100 | return USB_OUTCOME_CRCERROR;
|
|---|
| 101 |
|
|---|
| 102 | if (status & TD_STATUS_ERROR_CRC)
|
|---|
| 103 | return USB_OUTCOME_CRCERROR;
|
|---|
| 104 |
|
|---|
| 105 | if (status & TD_STATUS_ERROR_BIT_STUFF)
|
|---|
| 106 | return USB_OUTCOME_CRCERROR;
|
|---|
| 107 |
|
|---|
| 108 | assert((((status >> TD_STATUS_ERROR_POS) & TD_STATUS_ERROR_MASK)
|
|---|
| 109 | | TD_STATUS_ERROR_RESERVED) == TD_STATUS_ERROR_RESERVED);
|
|---|
| 110 | return USB_OUTCOME_OK;
|
|---|
| 111 | }
|
|---|
| 112 |
|
|---|
| 113 | void transfer_descriptor_fini(transfer_descriptor_t *instance)
|
|---|
| 114 | {
|
|---|
| 115 | assert(instance);
|
|---|
| 116 | callback_run(instance->callback,
|
|---|
| 117 | convert_outcome(instance->status),
|
|---|
| 118 | ((instance->status >> TD_STATUS_ACTLEN_POS) + 1) & TD_STATUS_ACTLEN_MASK
|
|---|
| 119 | );
|
|---|
| 120 | }
|
|---|
| 121 | /**
|
|---|
| 122 | * @}
|
|---|
| 123 | */
|
|---|
