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author | Christian Gmeiner <christian.gmeiner@gmail.com> | 2007-08-27 16:04:32 +0000 |
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committer | Christian Gmeiner <christian.gmeiner@gmail.com> | 2007-08-27 16:04:32 +0000 |
commit | 8181a0c905a591caef684a2d7487feedbec84c10 (patch) | |
tree | 3939183e8e73928d1b5dcfc97b40f33b6baa309b /firmware/usbstack/core/epsetup.c | |
parent | 9305c86f5b8fdfd60882428f884ba29bded8da78 (diff) | |
download | rockbox-8181a0c905a591caef684a2d7487feedbec84c10.tar.gz rockbox-8181a0c905a591caef684a2d7487feedbec84c10.zip |
Usb Stack: only setup packet handling, and not enabled by default as there is a lot to do.
* settings code is not fully ready -> changing device driver has no effect
* clean ups
* check copyriths
* find a way to detect IN transfers
* support for full and highspeed
* ...
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14470 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/usbstack/core/epsetup.c')
-rw-r--r-- | firmware/usbstack/core/epsetup.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/firmware/usbstack/core/epsetup.c b/firmware/usbstack/core/epsetup.c new file mode 100644 index 0000000000..6ae54fb9ac --- /dev/null +++ b/firmware/usbstack/core/epsetup.c | |||
@@ -0,0 +1,186 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id: $ | ||
9 | * | ||
10 | * Copyright (C) 2007 by Christian Gmeiner | ||
11 | * | ||
12 | * All files in this archive are subject to the GNU General Public License. | ||
13 | * See the file COPYING in the source tree root for full license agreement. | ||
14 | * | ||
15 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
16 | * KIND, either express or implied. | ||
17 | * | ||
18 | ****************************************************************************/ | ||
19 | |||
20 | #include <string.h> | ||
21 | #include <ctype.h> | ||
22 | #include "usbstack/core.h" | ||
23 | |||
24 | /** | ||
25 | * | ||
26 | * Naming Convention for Endpoint Names | ||
27 | * | ||
28 | * - ep1, ep2, ... address is fixed, not direction or type | ||
29 | * - ep1in, ep2out, ... address and direction are fixed, not type | ||
30 | * - ep1-bulk, ep2-bulk, ... address and type are fixed, not direction | ||
31 | * - ep1in-bulk, ep2out-iso, ... all three are fixed | ||
32 | * - ep-* ... no functionality restrictions | ||
33 | * | ||
34 | * Type suffixes are "-bulk", "-iso", or "-int". Numbers are decimal. | ||
35 | * | ||
36 | */ | ||
37 | static int ep_matches(struct usb_ep* ep, struct usb_endpoint_descriptor* desc); | ||
38 | |||
39 | void usb_ep_autoconfig_reset(void) { | ||
40 | |||
41 | struct usb_ep* ep = NULL; | ||
42 | if (usbcore.active_controller == NULL) { | ||
43 | return; | ||
44 | } | ||
45 | |||
46 | logf("resetting endpoints"); | ||
47 | list_for_each_entry(ep, &usbcore.active_controller->endpoints.list, list) { | ||
48 | logf("reset %s", ep->name); | ||
49 | ep->claimed = false; | ||
50 | } | ||
51 | } | ||
52 | |||
53 | /** | ||
54 | * Find a suitable endpoint for the requested endpoint descriptor. | ||
55 | * @param desc usb descritpro to use for seraching. | ||
56 | * @return NULL or a valid endpoint. | ||
57 | */ | ||
58 | struct usb_ep* usb_ep_autoconfig(struct usb_endpoint_descriptor* desc) { | ||
59 | |||
60 | struct usb_ep* ep = NULL; | ||
61 | if (usbcore.active_controller == NULL) { | ||
62 | logf("active controller NULL"); | ||
63 | return NULL; | ||
64 | } | ||
65 | |||
66 | list_for_each_entry(ep, &usbcore.active_controller->endpoints.list, list) { | ||
67 | if (ep_matches (ep, desc)) { | ||
68 | return ep; | ||
69 | } | ||
70 | } | ||
71 | |||
72 | return NULL; | ||
73 | } | ||
74 | |||
75 | static int ep_matches(struct usb_ep* ep, struct usb_endpoint_descriptor* desc) { | ||
76 | |||
77 | uint8_t type; | ||
78 | const char* tmp; | ||
79 | uint16_t max; | ||
80 | |||
81 | /* endpoint already claimed? */ | ||
82 | if (ep->claimed) { | ||
83 | logf("!! claimed !!"); | ||
84 | return 0; | ||
85 | } | ||
86 | |||
87 | /* only support ep0 for portable CONTROL traffic */ | ||
88 | type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; | ||
89 | if (type == USB_ENDPOINT_XFER_CONTROL) { | ||
90 | logf("type == control"); | ||
91 | return 0; | ||
92 | } | ||
93 | |||
94 | /* some other naming convention */ | ||
95 | if (ep->name[0] != 'e') { | ||
96 | logf("wrong name"); | ||
97 | return 0; | ||
98 | } | ||
99 | |||
100 | /* type-restriction: "-iso", "-bulk", or "-int". | ||
101 | * direction-restriction: "in", "out". | ||
102 | */ | ||
103 | if (ep->name[2] != '-' ) { | ||
104 | tmp = strrchr (ep->name, '-'); | ||
105 | if (tmp) { | ||
106 | switch (type) { | ||
107 | case USB_ENDPOINT_XFER_INT: | ||
108 | /* bulk endpoints handle interrupt transfers, | ||
109 | * except the toggle-quirky iso-synch kind | ||
110 | */ | ||
111 | if (tmp[2] == 's') { // == "-iso" | ||
112 | return 0; | ||
113 | } | ||
114 | break; | ||
115 | case USB_ENDPOINT_XFER_BULK: | ||
116 | if (tmp[1] != 'b') { // != "-bulk" | ||
117 | return 0; | ||
118 | } | ||
119 | break; | ||
120 | case USB_ENDPOINT_XFER_ISOC: | ||
121 | if (tmp[2] != 's') { // != "-iso" | ||
122 | return 0; | ||
123 | } | ||
124 | } | ||
125 | } else { | ||
126 | tmp = ep->name + strlen (ep->name); | ||
127 | } | ||
128 | |||
129 | /* direction-restriction: "..in-..", "out-.." */ | ||
130 | tmp--; | ||
131 | if (!isdigit(*tmp)) { | ||
132 | if (desc->bEndpointAddress & USB_DIR_IN) { | ||
133 | if ('n' != *tmp) { | ||
134 | return 0; | ||
135 | } | ||
136 | } else { | ||
137 | if ('t' != *tmp) { | ||
138 | return 0; | ||
139 | } | ||
140 | } | ||
141 | } | ||
142 | } | ||
143 | |||
144 | |||
145 | /* endpoint maxpacket size is an input parameter, except for bulk | ||
146 | * where it's an output parameter representing the full speed limit. | ||
147 | * the usb spec fixes high speed bulk maxpacket at 512 bytes. | ||
148 | */ | ||
149 | max = 0x7ff & desc->wMaxPacketSize; | ||
150 | |||
151 | switch (type) { | ||
152 | case USB_ENDPOINT_XFER_INT: | ||
153 | /* INT: limit 64 bytes full speed, 1024 high speed */ | ||
154 | if ((usbcore.active_controller->speed != USB_SPEED_HIGH) && (max > 64)) { | ||
155 | return 0; | ||
156 | } | ||
157 | /* FALLTHROUGH */ | ||
158 | |||
159 | case USB_ENDPOINT_XFER_ISOC: | ||
160 | if ((usbcore.active_controller->speed != USB_SPEED_HIGH) && (max > 1023)) { | ||
161 | return 0; | ||
162 | } | ||
163 | break; | ||
164 | } | ||
165 | |||
166 | /* MATCH!! */ | ||
167 | |||
168 | /* report address */ | ||
169 | desc->bEndpointAddress |= ep->ep_num; | ||
170 | |||
171 | /* report (variable) full speed bulk maxpacket */ | ||
172 | if (type == USB_ENDPOINT_XFER_BULK) { | ||
173 | int size = max; | ||
174 | |||
175 | /* min() doesn't work on bitfields with gcc-3.5 */ | ||
176 | if (size > 64) { | ||
177 | size = 64; | ||
178 | } | ||
179 | desc->wMaxPacketSize = size; | ||
180 | } | ||
181 | |||
182 | /* save desc in endpoint */ | ||
183 | ep->desc = desc; | ||
184 | |||
185 | return 1; | ||
186 | } | ||