| 1 | /*
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| 2 | * Copyright (c) 2011 Jan Vesely
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 | /** @addtogroup usb
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| 29 | * @{
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| 30 | */
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| 31 | /** @file
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| 32 | * @brief UHCI driver
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| 33 | */
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| 34 | #include <errno.h>
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| 35 | #include <usb/debug.h>
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| 36 |
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| 37 | #include "transfer_descriptor.h"
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| 38 | #include "utils/malloc32.h"
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| 39 |
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| 40 | void transfer_descriptor_init(transfer_descriptor_t *instance,
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| 41 | int error_count, size_t size, bool isochronous, usb_target_t target,
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| 42 | int pid, void *buffer)
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| 43 | {
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| 44 | assert(instance);
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| 45 |
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| 46 | instance->next =
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| 47 | 0 | LINK_POINTER_TERMINATE_FLAG;
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| 48 |
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| 49 | assert(size < 1024);
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| 50 | instance->status = 0
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| 51 | | ((error_count & TD_STATUS_ERROR_COUNT_MASK) << TD_STATUS_ERROR_COUNT_POS)
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| 52 | | TD_STATUS_ERROR_ACTIVE;
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| 53 |
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| 54 | instance->device = 0
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| 55 | | (((size - 1) & TD_DEVICE_MAXLEN_MASK) << TD_DEVICE_MAXLEN_POS)
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| 56 | | ((target.address & TD_DEVICE_ADDRESS_MASK) << TD_DEVICE_ADDRESS_POS)
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| 57 | | ((target.endpoint & TD_DEVICE_ENDPOINT_MASK) << TD_DEVICE_ENDPOINT_POS)
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| 58 | | ((pid & TD_DEVICE_PID_MASK) << TD_DEVICE_PID_POS);
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| 59 |
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| 60 | instance->buffer_ptr = 0;
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| 61 |
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| 62 | if (size) {
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| 63 | instance->buffer_ptr = (uintptr_t)addr_to_phys(buffer);
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| 64 | }
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| 65 |
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| 66 | usb_log_info("Created TD: %X:%X:%X:%X(%p).\n",
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| 67 | instance->next, instance->status, instance->device,
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| 68 | instance->buffer_ptr, buffer);
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| 69 | #if 0
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| 70 | if (size) {
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| 71 | unsigned char * buff = buffer;
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| 72 | uhci_print_verbose("TD Buffer dump(%p-%dB): ", buffer, size);
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| 73 | unsigned i = 0;
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| 74 | /* TODO: Verbose? */
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| 75 | for (; i < size; ++i) {
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| 76 | printf((i & 1) ? "%x " : "%x", buff[i]);
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| 77 | }
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| 78 | printf("\n");
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| 79 | }
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| 80 | #endif
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| 81 | }
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| 82 |
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| 83 | static inline usb_transaction_outcome_t convert_outcome(uint32_t status)
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| 84 | {
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| 85 | /*TODO: refactor into something sane */
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| 86 | /*TODO: add additional usb_errors to usb_outcome_t */
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| 87 |
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| 88 | if (status & TD_STATUS_ERROR_STALLED)
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| 89 | return USB_OUTCOME_CRCERROR;
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| 90 |
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| 91 | if (status & TD_STATUS_ERROR_BUFFER)
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| 92 | return USB_OUTCOME_CRCERROR;
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| 93 |
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| 94 | if (status & TD_STATUS_ERROR_BABBLE)
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| 95 | return USB_OUTCOME_BABBLE;
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| 96 |
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| 97 | if (status & TD_STATUS_ERROR_NAK)
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| 98 | return USB_OUTCOME_CRCERROR;
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| 99 |
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| 100 | if (status & TD_STATUS_ERROR_CRC)
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| 101 | return USB_OUTCOME_CRCERROR;
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| 102 |
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| 103 | if (status & TD_STATUS_ERROR_BIT_STUFF)
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| 104 | return USB_OUTCOME_CRCERROR;
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| 105 |
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| 106 | assert((((status >> TD_STATUS_ERROR_POS) & TD_STATUS_ERROR_MASK)
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| 107 | | TD_STATUS_ERROR_RESERVED) == TD_STATUS_ERROR_RESERVED);
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| 108 | return USB_OUTCOME_OK;
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| 109 | }
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| 110 | /*----------------------------------------------------------------------------*/
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| 111 | int transfer_descriptor_status(transfer_descriptor_t *instance)
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| 112 | {
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| 113 | assert(instance);
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| 114 | if (convert_outcome(instance->status))
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| 115 | return EINVAL; //TODO: use sane error value here
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| 116 | return EOK;
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| 117 | }
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| 118 | /**
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| 119 | * @}
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| 120 | */
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