| 1 | /*
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| 2 | * Copyright (c) 2014 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 drvusbehci
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| 29 | * @{
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| 30 | */
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| 31 | /** @file
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| 32 | * @brief EHCI driver
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| 33 | */
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| 34 |
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| 35 | #include <assert.h>
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| 36 | #include <stdlib.h>
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| 37 | #include <usb/debug.h>
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| 38 | #include <usb/host/utils/malloc32.h>
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| 39 |
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| 40 | #include "ehci_endpoint.h"
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| 41 | #include "hc.h"
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| 42 |
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| 43 | /** Callback to set toggle on ED.
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| 44 | *
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| 45 | * @param[in] hcd_ep hcd endpoint structure
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| 46 | * @param[in] toggle new value of toggle bit
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| 47 | */
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| 48 | static void ehci_ep_toggle_set(void *ehci_ep, int toggle)
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| 49 | {
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| 50 | ehci_endpoint_t *instance = ehci_ep;
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| 51 | assert(instance);
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| 52 | assert(instance->qh);
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| 53 | if (qh_toggle_from_td(instance->qh))
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| 54 | usb_log_warning("EP(%p): Setting toggle bit for transfer "
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| 55 | "directed EP", instance);
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| 56 | qh_toggle_set(instance->qh, toggle);
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| 57 | }
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| 58 |
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| 59 | /** Callback to get value of toggle bit.
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| 60 | *
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| 61 | * @param[in] hcd_ep hcd endpoint structure
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| 62 | * @return Current value of toggle bit.
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| 63 | */
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| 64 | static int ehci_ep_toggle_get(void *ehci_ep)
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| 65 | {
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| 66 | ehci_endpoint_t *instance = ehci_ep;
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| 67 | assert(instance);
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| 68 | assert(instance->qh);
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| 69 | if (qh_toggle_from_td(instance->qh))
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| 70 | usb_log_warning("EP(%p): Reading useless toggle bit", instance);
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| 71 | return qh_toggle_get(instance->qh);
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| 72 | }
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| 73 |
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| 74 | /** Creates new hcd endpoint representation.
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| 75 | *
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| 76 | * @param[in] ep USBD endpoint structure
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| 77 | * @return Error code.
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| 78 | */
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| 79 | int ehci_endpoint_init(hcd_t *hcd, endpoint_t *ep)
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| 80 | {
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| 81 | assert(ep);
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| 82 | hc_t *hc = hcd_get_driver_data(hcd);
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| 83 |
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| 84 | ehci_endpoint_t *ehci_ep = malloc(sizeof(ehci_endpoint_t));
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| 85 | if (ehci_ep == NULL)
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| 86 | return ENOMEM;
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| 87 |
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| 88 | ehci_ep->qh = malloc32(sizeof(qh_t));
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| 89 | if (ehci_ep->qh == NULL) {
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| 90 | free(ehci_ep);
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| 91 | return ENOMEM;
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| 92 | }
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| 93 |
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| 94 | usb_log_debug2("EP(%p): Creating for %p", ehci_ep, ep);
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| 95 | link_initialize(&ehci_ep->link);
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| 96 | qh_init(ehci_ep->qh, ep);
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| 97 | endpoint_set_hc_data(
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| 98 | ep, ehci_ep, ehci_ep_toggle_get, ehci_ep_toggle_set);
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| 99 | hc_enqueue_endpoint(hc, ep);
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| 100 | return EOK;
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| 101 | }
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| 102 |
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| 103 | /** Disposes hcd endpoint structure
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| 104 | *
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| 105 | * @param[in] hcd driver using this instance.
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| 106 | * @param[in] ep endpoint structure.
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| 107 | */
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| 108 | void ehci_endpoint_fini(hcd_t *hcd, endpoint_t *ep)
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| 109 | {
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| 110 | assert(hcd);
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| 111 | assert(ep);
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| 112 | hc_t *hc = hcd_get_driver_data(hcd);
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| 113 |
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| 114 | ehci_endpoint_t *instance = ehci_endpoint_get(ep);
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| 115 | hc_dequeue_endpoint(hc, ep);
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| 116 | endpoint_clear_hc_data(ep);
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| 117 | usb_log_debug2("EP(%p): Destroying for %p", instance, ep);
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| 118 | if (instance) {
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| 119 | free32(instance->qh);
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| 120 | free(instance);
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| 121 | }
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| 122 | }
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| 123 | /**
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| 124 | * @}
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| 125 | */
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| 126 |
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