[774afaae] | 1 | /*
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| 2 | * Copyright (c) 2010 Vojtech Horky
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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 |
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[bd8c753d] | 29 | /** @addtogroup drvusbvhc
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[774afaae] | 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | * @brief Virtual USB hub operations.
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| 34 | */
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[58563585] | 35 |
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[774afaae] | 36 | #include <errno.h>
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| 37 | #include <usb/classes/hub.h>
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[6cb58e6] | 38 | #include <usbvirt/device.h>
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[774afaae] | 39 | #include "virthub.h"
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| 40 | #include "hub.h"
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| 41 |
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| 42 | /** Callback when device changes states. */
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[6cb58e6] | 43 | static void on_state_change(usbvirt_device_t *dev,
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[774afaae] | 44 | usbvirt_device_state_t old_state, usbvirt_device_state_t new_state)
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| 45 | {
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| 46 | hub_t *hub = (hub_t *)dev->device_data;
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| 47 |
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| 48 | hub_acquire(hub);
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| 49 |
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| 50 | switch (new_state) {
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[3bacee1] | 51 | case USBVIRT_STATE_CONFIGURED:
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| 52 | hub_set_port_state_all(hub, HUB_PORT_STATE_POWERED_OFF);
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| 53 | break;
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| 54 | case USBVIRT_STATE_ADDRESS:
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| 55 | hub_set_port_state_all(hub, HUB_PORT_STATE_NOT_CONFIGURED);
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| 56 | break;
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| 57 | default:
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| 58 | break;
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[774afaae] | 59 | }
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| 60 |
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| 61 | hub_release(hub);
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| 62 | }
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| 63 |
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| 64 | /** Callback for data request. */
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[5a6cc679] | 65 | static errno_t req_on_status_change_pipe(usbvirt_device_t *dev,
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[6cb58e6] | 66 | usb_endpoint_t endpoint, usb_transfer_type_t tr_type,
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| 67 | void *buffer, size_t buffer_size, size_t *actual_size)
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[774afaae] | 68 | {
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| 69 | if (endpoint != HUB_STATUS_CHANGE_PIPE) {
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[6cb58e6] | 70 | return ESTALL;
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| 71 | }
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| 72 | if (tr_type != USB_TRANSFER_INTERRUPT) {
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| 73 | return ESTALL;
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[774afaae] | 74 | }
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[a35b458] | 75 |
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[6cb58e6] | 76 | hub_t *hub = dev->device_data;
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[774afaae] | 77 |
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| 78 | hub_acquire(hub);
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| 79 |
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[6cb58e6] | 80 | if (!hub->signal_changes) {
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| 81 | hub_release(hub);
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| 82 |
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| 83 | return ENAK;
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| 84 | }
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| 85 |
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[774afaae] | 86 | uint8_t change_map = hub_get_status_change_bitmap(hub);
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[6cb58e6] | 87 |
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[774afaae] | 88 | uint8_t *b = (uint8_t *) buffer;
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[6cb58e6] | 89 | if (buffer_size > 0) {
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[774afaae] | 90 | *b = change_map;
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| 91 | *actual_size = 1;
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[6cb58e6] | 92 | } else {
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| 93 | *actual_size = 0;
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[774afaae] | 94 | }
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[a35b458] | 95 |
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[6cb58e6] | 96 | hub->signal_changes = false;
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| 97 |
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[774afaae] | 98 | hub_release(hub);
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| 99 |
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| 100 | return EOK;
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| 101 | }
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| 102 |
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[70e5ad5] | 103 | /** Handle ClearHubFeature request.
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| 104 | *
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| 105 | * @param dev Virtual device representing the hub.
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| 106 | * @param request The SETUP packet of the control request.
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| 107 | * @param data Extra data (when DATA stage present).
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| 108 | * @return Error code.
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| 109 | */
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[5a6cc679] | 110 | static errno_t req_clear_hub_feature(usbvirt_device_t *dev,
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[6cb58e6] | 111 | const usb_device_request_setup_packet_t *request, uint8_t *data,
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| 112 | size_t *act_size)
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[774afaae] | 113 | {
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| 114 | return ENOTSUP;
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| 115 | }
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| 116 |
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[70e5ad5] | 117 | /** Handle ClearPortFeature request.
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| 118 | *
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| 119 | * @param dev Virtual device representing the hub.
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| 120 | * @param request The SETUP packet of the control request.
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| 121 | * @param data Extra data (when DATA stage present).
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| 122 | * @return Error code.
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| 123 | */
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[5a6cc679] | 124 | static errno_t req_clear_port_feature(usbvirt_device_t *dev,
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[6cb58e6] | 125 | const usb_device_request_setup_packet_t *request, uint8_t *data,
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| 126 | size_t *act_size)
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[774afaae] | 127 | {
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[5a6cc679] | 128 | errno_t rc;
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[774afaae] | 129 | size_t port = request->index - 1;
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| 130 | usb_hub_class_feature_t feature = request->value;
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| 131 | hub_t *hub = (hub_t *) dev->device_data;
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| 132 |
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| 133 | hub_acquire(hub);
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| 134 |
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| 135 | hub_port_state_t port_state = hub_get_port_state(hub, port);
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| 136 |
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| 137 | switch (feature) {
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[3bacee1] | 138 | case USB2_HUB_FEATURE_PORT_ENABLE:
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| 139 | if ((port_state != HUB_PORT_STATE_NOT_CONFIGURED) &&
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| 140 | (port_state != HUB_PORT_STATE_POWERED_OFF)) {
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| 141 | hub_set_port_state(hub, port, HUB_PORT_STATE_DISABLED);
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| 142 | }
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| 143 | rc = EOK;
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| 144 | break;
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| 145 |
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| 146 | case USB2_HUB_FEATURE_PORT_SUSPEND:
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| 147 | if (port_state != HUB_PORT_STATE_SUSPENDED) {
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[774afaae] | 148 | rc = EOK;
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| 149 | break;
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[3bacee1] | 150 | }
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| 151 | hub_set_port_state(hub, port, HUB_PORT_STATE_RESUMING);
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| 152 | rc = EOK;
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| 153 | break;
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| 154 |
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| 155 | case USB_HUB_FEATURE_PORT_POWER:
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| 156 | if (port_state != HUB_PORT_STATE_NOT_CONFIGURED) {
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| 157 | hub_set_port_state(hub, port, HUB_PORT_STATE_POWERED_OFF);
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| 158 | }
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| 159 | rc = EOK;
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| 160 | break;
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| 161 |
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| 162 | case USB_HUB_FEATURE_C_PORT_CONNECTION:
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| 163 | hub_clear_port_status_change(hub, port, HUB_STATUS_C_PORT_CONNECTION);
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| 164 | rc = EOK;
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| 165 | break;
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| 166 |
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| 167 | case USB2_HUB_FEATURE_C_PORT_ENABLE:
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| 168 | hub_clear_port_status_change(hub, port, HUB_STATUS_C_PORT_ENABLE);
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| 169 | rc = EOK;
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| 170 | break;
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| 171 |
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| 172 | case USB2_HUB_FEATURE_C_PORT_SUSPEND:
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| 173 | hub_clear_port_status_change(hub, port, HUB_STATUS_C_PORT_SUSPEND);
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| 174 | rc = EOK;
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| 175 | break;
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| 176 |
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| 177 | case USB_HUB_FEATURE_C_PORT_OVER_CURRENT:
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| 178 | hub_clear_port_status_change(hub, port, HUB_STATUS_C_PORT_OVER_CURRENT);
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| 179 | rc = EOK;
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| 180 | break;
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| 181 |
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| 182 | case USB_HUB_FEATURE_C_PORT_RESET:
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| 183 | hub_clear_port_status_change(hub, port, HUB_STATUS_C_PORT_RESET);
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| 184 | rc = EOK;
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| 185 | break;
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| 186 |
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| 187 | default:
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| 188 | rc = ENOTSUP;
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| 189 | break;
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[774afaae] | 190 | }
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| 191 |
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| 192 | hub_release(hub);
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| 193 |
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| 194 | return rc;
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| 195 | }
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| 196 |
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[70e5ad5] | 197 | /** Handle GetBusState request.
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| 198 | *
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| 199 | * @param dev Virtual device representing the hub.
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| 200 | * @param request The SETUP packet of the control request.
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| 201 | * @param data Extra data (when DATA stage present).
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| 202 | * @return Error code.
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| 203 | */
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[5a6cc679] | 204 | static errno_t req_get_bus_state(usbvirt_device_t *dev,
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[6cb58e6] | 205 | const usb_device_request_setup_packet_t *request, uint8_t *data,
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| 206 | size_t *act_size)
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[774afaae] | 207 | {
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| 208 | return ENOTSUP;
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| 209 | }
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| 210 |
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[70e5ad5] | 211 | /** Handle GetDescriptor request.
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| 212 | *
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| 213 | * @param dev Virtual device representing the hub.
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| 214 | * @param request The SETUP packet of the control request.
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| 215 | * @param data Extra data (when DATA stage present).
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| 216 | * @return Error code.
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| 217 | */
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[5a6cc679] | 218 | static errno_t req_get_descriptor(usbvirt_device_t *dev,
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[6cb58e6] | 219 | const usb_device_request_setup_packet_t *request, uint8_t *data,
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| 220 | size_t *act_size)
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[774afaae] | 221 | {
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| 222 | if (request->value_high == USB_DESCTYPE_HUB) {
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[6cb58e6] | 223 | usbvirt_control_reply_helper(request, data, act_size,
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[774afaae] | 224 | &hub_descriptor, hub_descriptor.length);
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| 225 |
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[6cb58e6] | 226 | return EOK;
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[774afaae] | 227 | }
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| 228 | /* Let the framework handle all the rest. */
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| 229 | return EFORWARD;
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| 230 | }
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| 231 |
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[70e5ad5] | 232 | /** Handle GetHubStatus request.
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| 233 | *
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| 234 | * @param dev Virtual device representing the hub.
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| 235 | * @param request The SETUP packet of the control request.
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| 236 | * @param data Extra data (when DATA stage present).
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| 237 | * @return Error code.
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| 238 | */
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[5a6cc679] | 239 | static errno_t req_get_hub_status(usbvirt_device_t *dev,
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[6cb58e6] | 240 | const usb_device_request_setup_packet_t *request, uint8_t *data,
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| 241 | size_t *act_size)
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[774afaae] | 242 | {
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| 243 | uint32_t hub_status = 0;
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| 244 |
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[6cb58e6] | 245 | usbvirt_control_reply_helper(request, data, act_size,
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[774afaae] | 246 | &hub_status, sizeof(hub_status));
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[6cb58e6] | 247 |
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| 248 | return EOK;
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[774afaae] | 249 | }
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| 250 |
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[70e5ad5] | 251 | /** Handle GetPortStatus request.
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| 252 | *
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| 253 | * @param dev Virtual device representing the hub.
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| 254 | * @param request The SETUP packet of the control request.
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| 255 | * @param data Extra data (when DATA stage present).
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| 256 | * @return Error code.
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| 257 | */
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[5a6cc679] | 258 | static errno_t req_get_port_status(usbvirt_device_t *dev,
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[6cb58e6] | 259 | const usb_device_request_setup_packet_t *request, uint8_t *data,
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| 260 | size_t *act_size)
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[774afaae] | 261 | {
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| 262 | hub_t *hub = (hub_t *) dev->device_data;
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| 263 |
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| 264 | hub_acquire(hub);
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| 265 |
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| 266 | uint32_t status = hub_get_port_status(hub, request->index - 1);
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| 267 |
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| 268 | hub_release(hub);
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| 269 |
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[6cb58e6] | 270 | usbvirt_control_reply_helper(request, data, act_size,
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| 271 | &status, sizeof(status));
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| 272 |
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| 273 | return EOK;
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[774afaae] | 274 | }
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| 275 |
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[70e5ad5] | 276 | /** Handle SetHubFeature request.
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| 277 | *
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| 278 | * @param dev Virtual device representing the hub.
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| 279 | * @param request The SETUP packet of the control request.
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| 280 | * @param data Extra data (when DATA stage present).
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| 281 | * @return Error code.
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| 282 | */
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[5a6cc679] | 283 | static errno_t req_set_hub_feature(usbvirt_device_t *dev,
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[6cb58e6] | 284 | const usb_device_request_setup_packet_t *request, uint8_t *data,
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| 285 | size_t *act_size)
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[774afaae] | 286 | {
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| 287 | return ENOTSUP;
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| 288 | }
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| 289 |
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[70e5ad5] | 290 | /** Handle SetPortFeature request.
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| 291 | *
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| 292 | * @param dev Virtual device representing the hub.
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| 293 | * @param request The SETUP packet of the control request.
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| 294 | * @param data Extra data (when DATA stage present).
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| 295 | * @return Error code.
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| 296 | */
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[5a6cc679] | 297 | static errno_t req_set_port_feature(usbvirt_device_t *dev,
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[6cb58e6] | 298 | const usb_device_request_setup_packet_t *request, uint8_t *data,
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| 299 | size_t *act_size)
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[774afaae] | 300 | {
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[5a6cc679] | 301 | errno_t rc = ENOTSUP;
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[774afaae] | 302 | size_t port = request->index - 1;
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| 303 | usb_hub_class_feature_t feature = request->value;
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| 304 | hub_t *hub = (hub_t *) dev->device_data;
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| 305 |
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| 306 | hub_acquire(hub);
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| 307 |
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| 308 | hub_port_state_t port_state = hub_get_port_state(hub, port);
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| 309 |
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| 310 | switch (feature) {
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[3bacee1] | 311 | case USB_HUB_FEATURE_PORT_RESET:
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| 312 | if (port_state != HUB_PORT_STATE_POWERED_OFF) {
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| 313 | hub_set_port_state(hub, port, HUB_PORT_STATE_RESETTING);
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| 314 | }
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| 315 | rc = EOK;
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| 316 | break;
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| 317 |
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| 318 | case USB2_HUB_FEATURE_PORT_SUSPEND:
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| 319 | if (port_state == HUB_PORT_STATE_ENABLED) {
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| 320 | hub_set_port_state(hub, port, HUB_PORT_STATE_SUSPENDED);
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| 321 | }
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| 322 | rc = EOK;
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| 323 | break;
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| 324 |
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| 325 | case USB_HUB_FEATURE_PORT_POWER:
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| 326 | if (port_state == HUB_PORT_STATE_POWERED_OFF) {
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| 327 | hub_set_port_state(hub, port, HUB_PORT_STATE_DISCONNECTED);
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| 328 | }
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| 329 | rc = EOK;
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| 330 | break;
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| 331 |
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| 332 | default:
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| 333 | break;
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[774afaae] | 334 | }
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| 335 |
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| 336 | hub_release(hub);
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| 337 |
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| 338 | return rc;
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| 339 | }
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| 340 |
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[70e5ad5] | 341 | /** Recipient: other. */
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[6cb58e6] | 342 | #define REC_OTHER USB_REQUEST_RECIPIENT_OTHER
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[70e5ad5] | 343 | /** Recipient: device. */
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[6cb58e6] | 344 | #define REC_DEVICE USB_REQUEST_RECIPIENT_DEVICE
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[774afaae] | 345 |
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| 346 | /** Hub operations on control endpoint zero. */
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[6cb58e6] | 347 | static usbvirt_control_request_handler_t endpoint_zero_handlers[] = {
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[774afaae] | 348 | {
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[2a6e2358] | 349 | STD_REQ_IN(USB_REQUEST_RECIPIENT_DEVICE, USB_DEVREQ_GET_DESCRIPTOR),
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[cc468c7] | 350 | .name = "GetStdDescriptor",
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[774afaae] | 351 | .callback = req_get_descriptor
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| 352 | },
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| 353 | {
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[c9399c0] | 354 | CLASS_REQ_IN(REC_DEVICE, USB_DEVREQ_GET_DESCRIPTOR),
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[cc468c7] | 355 | .name = "GetClassDescriptor",
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[774afaae] | 356 | .callback = req_get_descriptor
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| 357 | },
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| 358 | {
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[c9399c0] | 359 | CLASS_REQ_IN(REC_OTHER, USB_HUB_REQUEST_GET_STATUS),
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[774afaae] | 360 | .name = "GetPortStatus",
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| 361 | .callback = req_get_port_status
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| 362 | },
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| 363 | {
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[c9399c0] | 364 | CLASS_REQ_OUT(REC_DEVICE, USB_HUB_REQUEST_CLEAR_FEATURE),
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[774afaae] | 365 | .name = "ClearHubFeature",
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| 366 | .callback = req_clear_hub_feature
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| 367 | },
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| 368 | {
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[c9399c0] | 369 | CLASS_REQ_OUT(REC_OTHER, USB_HUB_REQUEST_CLEAR_FEATURE),
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[774afaae] | 370 | .name = "ClearPortFeature",
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| 371 | .callback = req_clear_port_feature
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| 372 | },
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| 373 | {
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[c9399c0] | 374 | CLASS_REQ_IN(REC_OTHER, USB_HUB_REQUEST_GET_STATE),
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[774afaae] | 375 | .name = "GetBusState",
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| 376 | .callback = req_get_bus_state
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| 377 | },
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| 378 | {
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[c9399c0] | 379 | CLASS_REQ_IN(REC_DEVICE, USB_HUB_REQUEST_GET_DESCRIPTOR),
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[774afaae] | 380 | .name = "GetHubDescriptor",
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| 381 | .callback = req_get_descriptor
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| 382 | },
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| 383 | {
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[c9399c0] | 384 | CLASS_REQ_IN(REC_DEVICE, USB_HUB_REQUEST_GET_STATUS),
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[774afaae] | 385 | .name = "GetHubStatus",
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| 386 | .callback = req_get_hub_status
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| 387 | },
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| 388 | {
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[c9399c0] | 389 | CLASS_REQ_IN(REC_OTHER, USB_HUB_REQUEST_GET_STATUS),
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[774afaae] | 390 | .name = "GetPortStatus",
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| 391 | .callback = req_get_port_status
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| 392 | },
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| 393 | {
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[c9399c0] | 394 | CLASS_REQ_OUT(REC_DEVICE, USB_HUB_REQUEST_SET_FEATURE),
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[774afaae] | 395 | .name = "SetHubFeature",
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| 396 | .callback = req_set_hub_feature
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| 397 | },
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| 398 | {
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[c9399c0] | 399 | CLASS_REQ_OUT(REC_OTHER, USB_HUB_REQUEST_SET_FEATURE),
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[774afaae] | 400 | .name = "SetPortFeature",
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| 401 | .callback = req_set_port_feature
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| 402 | },
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[6cb58e6] | 403 | {
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| 404 | .callback = NULL
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| 405 | }
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[774afaae] | 406 | };
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| 407 |
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| 408 | /** Hub operations. */
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| 409 | usbvirt_device_ops_t hub_ops = {
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[6cb58e6] | 410 | .control = endpoint_zero_handlers,
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| 411 | .data_in[HUB_STATUS_CHANGE_PIPE] = req_on_status_change_pipe,
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| 412 | .state_changed = on_state_change,
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[774afaae] | 413 | };
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| 414 |
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| 415 | /**
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| 416 | * @}
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| 417 | */
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