source: mainline/uspace/drv/bus/usb/ehci/ehci_bus.h@ 61e27e80

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 61e27e80 was 35c37fc, checked in by Ondřej Hlavatý <aearsis@…>, 8 years ago

ehci: refactor to dma_buffers

One big hidden thing was refactored - now TDs are allocated in one
buffer together with setup and data buffers themselves. This reduces the
number of allocated pages per transfer to minimum.

  • Property mode set to 100644
File size: 2.6 KB
Line 
1/*
2 * Copyright (c) 2011 Jan Vesely
3 * Copyright (c) 2017 Ondrej Hlavaty <aearsis@eideo.cz>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * - Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * - Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * - The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29/** @addtogroup drvusbehci
30 * @{
31 */
32/** @file
33 * @brief EHCI driver
34 */
35#ifndef DRV_EHCI_HCD_BUS_H
36#define DRV_EHCI_HCD_BUS_H
37
38#include <assert.h>
39#include <adt/list.h>
40#include <usb/host/usb2_bus.h>
41#include <usb/host/endpoint.h>
42#include <usb/host/dma_buffer.h>
43
44#include "hw_struct/queue_head.h"
45
46/** Connector structure linking ED to to prepared TD. */
47typedef struct ehci_endpoint {
48 /* Inheritance */
49 endpoint_t base;
50
51 /** EHCI endpoint descriptor, backed by dma_buffer */
52 qh_t *qh;
53
54 dma_buffer_t dma_buffer;
55 /** Linked list used by driver software */
56 link_t link;
57} ehci_endpoint_t;
58
59typedef struct hc hc_t;
60
61typedef struct {
62 usb2_bus_t base;
63 hc_t *hc;
64} ehci_bus_t;
65
66void ehci_bus_prepare_ops(void);
67
68int ehci_bus_init(ehci_bus_t *, hc_t *);
69
70/** Get and convert assigned ehci_endpoint_t structure
71 * @param[in] ep USBD endpoint structure.
72 * @return Pointer to assigned ehci endpoint structure
73 */
74static inline ehci_endpoint_t * ehci_endpoint_get(const endpoint_t *ep)
75{
76 assert(ep);
77 return (ehci_endpoint_t *) ep;
78}
79
80static inline ehci_endpoint_t * ehci_endpoint_list_instance(link_t *l)
81{
82 return list_get_instance(l, ehci_endpoint_t, link);
83}
84
85#endif
86/**
87 * @}
88 */
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