| [a045ab1] | 1 | /*
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| 2 | * Copyright (c) 2011 Jan Vesely
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| [dbb7e3b] | 3 | * Copyright (c) 2011 Vojtech Horky
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| [a045ab1] | 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * - Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | * - Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | * - The name of the author may not be used to endorse or promote products
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| 16 | * derived from this software without specific prior written permission.
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| 17 | *
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 28 | */
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| 29 |
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| 30 | #include <usb/dev.h>
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| 31 | #include <errno.h>
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| 32 | #include <usb_iface.h>
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| [dbb7e3b] | 33 | #include <str.h>
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| 34 | #include <stdio.h>
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| 35 |
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| 36 | /** Resolve handle and address of USB device from its path.
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| 37 | *
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| 38 | * This is a wrapper working on best effort principle.
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| 39 | * If the resolving fails, if will not give much details about what
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| 40 | * is wrong.
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| 41 | * Typically, error from this function would be reported to the user
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| 42 | * as "bad device specification" or "device does not exist".
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| 43 | *
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| 44 | * The path can be specified in following format:
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| 45 | * - devman path (e.g. /hw/pci0/.../usb01_a5
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| 46 | * - bus number and device address (e.g. 5.1)
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| 47 | * - bus number, device address and device function (e.g. 2.1/HID0/keyboard)
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| 48 | *
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| 49 | * @param[in] dev_path Path to the device.
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| 50 | * @param[out] out_hc_handle Where to store handle of a parent host controller.
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| 51 | * @param[out] out_dev_addr Where to store device (USB) address.
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| 52 | * @param[out] out_dev_handle Where to store device handle.
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| 53 | * @return Error code.
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| 54 | */
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| [b7fd2a0] | 55 | errno_t usb_resolve_device_handle(const char *dev_path, devman_handle_t *dev_handle)
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| [dbb7e3b] | 56 | {
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| [5debe97] | 57 | if (dev_path == NULL || dev_handle == NULL) {
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| [dbb7e3b] | 58 | return EBADMEM;
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| 59 | }
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| 60 |
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| [f3922c2] | 61 | /* First, try to get the device handle. */
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| [b7fd2a0] | 62 | errno_t rc = devman_fun_get_handle(dev_path, dev_handle, 0);
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| [dbb7e3b] | 63 |
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| [f3922c2] | 64 | /* Next, try parsing dev_handle from the provided string */
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| [dbb7e3b] | 65 | if (rc != EOK) {
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| [f3922c2] | 66 | *dev_handle = strtoul(dev_path, NULL, 10);
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| 67 | //FIXME: check errno
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| 68 | rc = EOK;
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| [dbb7e3b] | 69 | }
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| [f3922c2] | 70 | return rc;
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| [dbb7e3b] | 71 | }
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