source: mainline/uspace/drv/uhci-rhd/port.c@ 5f183dc

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 5f183dc was 0fde1d5, checked in by Jan Vesely <jano.vesely@…>, 15 years ago

properly report low speed devices
  • Property mode set to 100644
File size: 7.4 KB
Line 
1/*
2 * Copyright (c) 2011 Jan Vesely
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28/** @addtogroup usb
29 * @{
30 */
31/** @file
32 * @brief UHCI driver
33 */
34#include <errno.h>
35#include <str_error.h>
36#include <fibril_synch.h>
37
38#include <usb/usb.h> /* usb_address_t */
39#include <usb/usbdevice.h>
40#include <usb/hub.h>
41#include <usb/request.h>
42#include <usb/debug.h>
43#include <usb/recognise.h>
44
45#include "port.h"
46#include "port_status.h"
47
48static int uhci_port_new_device(uhci_port_t *port, uint16_t status);
49static int uhci_port_remove_device(uhci_port_t *port);
50static int uhci_port_set_enabled(uhci_port_t *port, bool enabled);
51static int uhci_port_check(void *port);
52static int new_device_enable_port(int portno, void *arg);
53
54int uhci_port_init(
55 uhci_port_t *port, port_status_t *address, unsigned number,
56 unsigned usec, ddf_dev_t *rh, int parent_phone)
57{
58 assert(port);
59 port->address = address;
60 port->number = number;
61 port->wait_period_usec = usec;
62 port->attached_device = 0;
63 port->rh = rh;
64 int rc = usb_hc_connection_initialize_from_device(
65 &port->hc_connection, rh);
66 if (rc != EOK) {
67 usb_log_error("Failed to initialize connection to HC.");
68 return rc;
69 }
70
71 port->checker = fibril_create(uhci_port_check, port);
72 if (port->checker == 0) {
73 usb_log_error(": failed to launch root hub fibril.");
74 return ENOMEM;
75 }
76 fibril_add_ready(port->checker);
77 usb_log_debug(
78 "Added fibril for port %d: %p.\n", number, port->checker);
79 return EOK;
80}
81/*----------------------------------------------------------------------------*/
82void uhci_port_fini(uhci_port_t *port)
83{
84// TODO: destroy fibril
85// TODO: hangup phone
86// fibril_teardown(port->checker);
87 return;
88}
89/*----------------------------------------------------------------------------*/
90int uhci_port_check(void *port)
91{
92 uhci_port_t *port_instance = port;
93 assert(port_instance);
94
95 while (1) {
96 /* read register value */
97 port_status_t port_status =
98 port_status_read(port_instance->address);
99
100 /* debug print */
101 static fibril_mutex_t dbg_mtx = FIBRIL_MUTEX_INITIALIZER(dbg_mtx);
102 fibril_mutex_lock(&dbg_mtx);
103 usb_log_debug("Port %d status at %p: 0x%04x.\n",
104 port_instance->number, port_instance->address, port_status);
105 print_port_status(port_status);
106 fibril_mutex_unlock(&dbg_mtx);
107
108 if (port_status & STATUS_CONNECTED_CHANGED) {
109 usb_log_debug("Change detected on port %d.\n", port_instance->number);
110 int rc = usb_hc_connection_open(
111 &port_instance->hc_connection);
112 if (rc != EOK) {
113 usb_log_error("Failed to connect to HC.");
114 goto next;
115 }
116
117 /* remove any old device */
118 if (port_instance->attached_device) {
119 usb_log_debug("Removing device on port %d.\n",
120 port_instance->number);
121 uhci_port_remove_device(port_instance);
122 }
123
124 port_status_write(port_instance->address, STATUS_CONNECTED_CHANGED);
125 usb_log_debug("Change status erased on port %d.\n",
126 port_instance->number);
127
128 if (port_status & STATUS_CONNECTED) {
129 /* new device */
130 uhci_port_new_device(port_instance, port_status);
131 }
132
133 rc = usb_hc_connection_close(
134 &port_instance->hc_connection);
135 if (rc != EOK) {
136 usb_log_error("Failed to disconnect from HC.");
137 goto next;
138 }
139 }
140 next:
141 async_usleep(port_instance->wait_period_usec);
142 }
143 return EOK;
144}
145
146/** Callback for enabling port during adding a new device.
147 *
148 * @param portno Port number (unused).
149 * @param arg Pointer to uhci_port_t of port with the new device.
150 * @return Error code.
151 */
152static int new_device_enable_port(int portno, void *arg)
153{
154 uhci_port_t *port = (uhci_port_t *) arg;
155
156 usb_log_debug("new_device_enable_port(%d)\n", port->number);
157
158 /*
159 * The host then waits for at least 100 ms to allow completion of
160 * an insertion process and for power at the device to become stable.
161 */
162 async_usleep(100000);
163
164
165 /* The hub maintains the reset signal to that port for 10 ms
166 * (See Section 11.5.1.5)
167 */
168 {
169 usb_log_debug("Reset Signal start on port %d.\n",
170 port->number);
171 port_status_t port_status =
172 port_status_read(port->address);
173 port_status |= STATUS_IN_RESET;
174 port_status_write(port->address, port_status);
175 async_usleep(10000);
176 port_status =
177 port_status_read(port->address);
178 port_status &= ~STATUS_IN_RESET;
179 port_status_write(port->address, port_status);
180 usb_log_debug("Reset Signal stop on port %d.\n",
181 port->number);
182 }
183
184 /* Enable the port. */
185 uhci_port_set_enabled(port, true);
186
187 return EOK;
188}
189
190/*----------------------------------------------------------------------------*/
191static int uhci_port_new_device(uhci_port_t *port, uint16_t status)
192{
193 assert(port);
194 assert(usb_hc_connection_is_opened(&port->hc_connection));
195
196 usb_log_info("Detected new device on port %u.\n", port->number);
197
198 usb_address_t dev_addr;
199 int rc = usb_hc_new_device_wrapper(port->rh, &port->hc_connection,
200 ((status & STATUS_LOW_SPEED) != 0) ? USB_SPEED_LOW : USB_SPEED_FULL,
201 new_device_enable_port, port->number, port,
202 &dev_addr, &port->attached_device, NULL, NULL, NULL);
203 if (rc != EOK) {
204 usb_log_error("Failed adding new device on port %u: %s.\n",
205 port->number, str_error(rc));
206 uhci_port_set_enabled(port, false);
207 return rc;
208 }
209
210 usb_log_info("New device on port %u has address %d (handle %zu).\n",
211 port->number, dev_addr, port->attached_device);
212
213 return EOK;
214}
215
216/*----------------------------------------------------------------------------*/
217static int uhci_port_remove_device(uhci_port_t *port)
218{
219 usb_log_error("Don't know how to remove device %#x.\n",
220 (unsigned int)port->attached_device);
221// uhci_port_set_enabled(port, false);
222 return EOK;
223}
224/*----------------------------------------------------------------------------*/
225static int uhci_port_set_enabled(uhci_port_t *port, bool enabled)
226{
227 assert(port);
228
229 /* read register value */
230 port_status_t port_status
231 = port_status_read(port->address);
232
233 /* enable port: register write */
234 if (enabled) {
235 port_status |= STATUS_ENABLED;
236 } else {
237 port_status &= ~STATUS_ENABLED;
238 }
239 port_status_write(port->address, port_status);
240
241 usb_log_info("%s port %d.\n",
242 enabled ? "Enabled" : "Disabled", port->number);
243 return EOK;
244}
245/*----------------------------------------------------------------------------*/
246/**
247 * @}
248 */
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