source: mainline/uspace/drv/bus/usb/ohci/ohci_batch.c@ 790318e

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 790318e was 790318e, checked in by Jan Vesely <jano.vesely@…>, 14 years ago

uhci,ohci: Remove direction from initialization table.
  • Property mode set to 100644
File size: 12.8 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 drvusbohci
29 * @{
30 */
31/** @file
32 * @brief OHCI driver USB transaction structure
33 */
34#include <errno.h>
35#include <str_error.h>
36
37#include <usb/usb.h>
38#include <usb/debug.h>
39
40#include "ohci_batch.h"
41#include "ohci_endpoint.h"
42#include "utils/malloc32.h"
43
44static void (*const batch_setup[])(ohci_transfer_batch_t*, usb_direction_t);
45/*----------------------------------------------------------------------------*/
46/** Safely destructs ohci_transfer_batch_t structure
47 *
48 * @param[in] ohci_batch Instance to destroy.
49 */
50static void ohci_transfer_batch_dispose(ohci_transfer_batch_t *ohci_batch)
51{
52 if (!ohci_batch)
53 return;
54 unsigned i = 0;
55 if (ohci_batch->tds) {
56 for (; i< ohci_batch->td_count; ++i) {
57 if (i != ohci_batch->leave_td)
58 free32(ohci_batch->tds[i]);
59 }
60 free(ohci_batch->tds);
61 }
62 usb_transfer_batch_dispose(ohci_batch->usb_batch);
63 free32(ohci_batch->device_buffer);
64 free(ohci_batch);
65}
66/*----------------------------------------------------------------------------*/
67void ohci_transfer_batch_finish_dispose(ohci_transfer_batch_t *ohci_batch)
68{
69 assert(ohci_batch);
70 assert(ohci_batch->usb_batch);
71 usb_transfer_batch_finish(ohci_batch->usb_batch,
72 ohci_batch->device_buffer + ohci_batch->usb_batch->setup_size,
73 ohci_batch->usb_batch->buffer_size);
74 ohci_transfer_batch_dispose(ohci_batch);
75}
76/*----------------------------------------------------------------------------*/
77ohci_transfer_batch_t * ohci_transfer_batch_get(usb_transfer_batch_t *usb_batch)
78{
79 assert(usb_batch);
80#define CHECK_NULL_DISPOSE_RET(ptr, message...) \
81if (ptr == NULL) { \
82 usb_log_error(message); \
83 ohci_transfer_batch_dispose(ohci_batch); \
84 return NULL; \
85} else (void)0
86
87 ohci_transfer_batch_t *ohci_batch =
88 calloc(1, sizeof(ohci_transfer_batch_t));
89 CHECK_NULL_DISPOSE_RET(ohci_batch,
90 "Failed to allocate OHCI batch data.\n");
91 link_initialize(&ohci_batch->link);
92 ohci_batch->td_count =
93 (usb_batch->buffer_size + OHCI_TD_MAX_TRANSFER - 1)
94 / OHCI_TD_MAX_TRANSFER;
95 /* Control transfer need Setup and Status stage */
96 if (usb_batch->ep->transfer_type == USB_TRANSFER_CONTROL) {
97 ohci_batch->td_count += 2;
98 }
99
100 /* We need an extra place for TD that was left at ED */
101 ohci_batch->tds = calloc(ohci_batch->td_count + 1, sizeof(td_t*));
102 CHECK_NULL_DISPOSE_RET(ohci_batch->tds,
103 "Failed to allocate OHCI transfer descriptors.\n");
104
105 /* Add TD left over by the previous transfer */
106 ohci_batch->ed = ohci_endpoint_get(usb_batch->ep)->ed;
107 ohci_batch->tds[0] = ohci_endpoint_get(usb_batch->ep)->td;
108 ohci_batch->leave_td = 0;
109 unsigned i = 1;
110 for (; i <= ohci_batch->td_count; ++i) {
111 ohci_batch->tds[i] = malloc32(sizeof(td_t));
112 CHECK_NULL_DISPOSE_RET(ohci_batch->tds[i],
113 "Failed to allocate TD %d.\n", i );
114 }
115
116
117 /* NOTE: OHCI is capable of handling buffer that crosses page boundaries
118 * it is, however, not capable of handling buffer that occupies more
119 * than two pages (the first page is computed using start pointer, the
120 * other using the end pointer) */
121 if (usb_batch->setup_size + usb_batch->buffer_size > 0) {
122 /* Use one buffer for setup and data stage */
123 ohci_batch->device_buffer =
124 malloc32(usb_batch->setup_size + usb_batch->buffer_size);
125 CHECK_NULL_DISPOSE_RET(ohci_batch->device_buffer,
126 "Failed to allocate device accessible buffer.\n");
127 /* Copy setup data */
128 memcpy(ohci_batch->device_buffer, usb_batch->setup_buffer,
129 usb_batch->setup_size);
130 /* Copy generic data */
131 if (usb_batch->ep->direction != USB_DIRECTION_IN)
132 memcpy(
133 ohci_batch->device_buffer + usb_batch->setup_size,
134 usb_batch->buffer, usb_batch->buffer_size);
135 }
136 ohci_batch->usb_batch = usb_batch;
137
138 const usb_direction_t dir = usb_transfer_batch_direction(usb_batch);
139 assert(batch_setup[usb_batch->ep->transfer_type]);
140 batch_setup[usb_batch->ep->transfer_type](ohci_batch, dir);
141
142 return ohci_batch;
143#undef CHECK_NULL_DISPOSE_RET
144}
145/*----------------------------------------------------------------------------*/
146/** Check batch TDs' status.
147 *
148 * @param[in] ohci_batch Batch structure to use.
149 * @return False, if there is an active TD, true otherwise.
150 *
151 * Walk all TDs (usually there is just one). Stop with false if there is an
152 * active TD. Stop with true if an error is found. Return true if the walk
153 * completes with the last TD.
154 */
155bool ohci_transfer_batch_is_complete(ohci_transfer_batch_t *ohci_batch)
156{
157 assert(ohci_batch);
158 assert(ohci_batch->usb_batch);
159
160 usb_log_debug("Batch %p checking %zu td(s) for completion.\n",
161 ohci_batch->usb_batch, ohci_batch->td_count);
162 usb_log_debug2("ED: %x:%x:%x:%x.\n",
163 ohci_batch->ed->status, ohci_batch->ed->td_head,
164 ohci_batch->ed->td_tail, ohci_batch->ed->next);
165
166 size_t i = 0;
167 for (; i < ohci_batch->td_count; ++i) {
168 assert(ohci_batch->tds[i] != NULL);
169 usb_log_debug("TD %zu: %x:%x:%x:%x.\n", i,
170 ohci_batch->tds[i]->status, ohci_batch->tds[i]->cbp,
171 ohci_batch->tds[i]->next, ohci_batch->tds[i]->be);
172 if (!td_is_finished(ohci_batch->tds[i])) {
173 return false;
174 }
175 ohci_batch->usb_batch->error = td_error(ohci_batch->tds[i]);
176 if (ohci_batch->usb_batch->error != EOK) {
177 usb_log_debug("Batch %p found error TD(%zu):%x.\n",
178 ohci_batch->usb_batch, i,
179 ohci_batch->tds[i]->status);
180 /* Make sure TD queue is empty (one TD),
181 * ED should be marked as halted */
182 ohci_batch->ed->td_tail =
183 (ohci_batch->ed->td_head & ED_TDTAIL_PTR_MASK);
184 ++i;
185 break;
186 }
187 }
188
189 assert(i <= ohci_batch->td_count);
190 ohci_batch->leave_td = i;
191
192 ohci_endpoint_t *ohci_ep = ohci_endpoint_get(ohci_batch->usb_batch->ep);
193 assert(ohci_ep);
194 ohci_ep->td = ohci_batch->tds[ohci_batch->leave_td];
195 assert(i > 0);
196 ohci_batch->usb_batch->transfered_size =
197 ohci_batch->usb_batch->buffer_size;
198 for (--i;i < ohci_batch->td_count; ++i)
199 ohci_batch->usb_batch->transfered_size
200 -= td_remain_size(ohci_batch->tds[i]);
201
202 /* Clear possible ED HALT */
203 ohci_batch->ed->td_head &= ~ED_TDHEAD_HALTED_FLAG;
204 /* just make sure that we are leaving the right TD behind */
205 const uint32_t pa = addr_to_phys(ohci_ep->td);
206 assert(pa == (ohci_batch->ed->td_head & ED_TDHEAD_PTR_MASK));
207 assert(pa == (ohci_batch->ed->td_tail & ED_TDTAIL_PTR_MASK));
208
209 return true;
210}
211/*----------------------------------------------------------------------------*/
212/** Starts execution of the TD list
213 *
214 * @param[in] ohci_batch Batch structure to use
215 */
216void ohci_transfer_batch_commit(ohci_transfer_batch_t *ohci_batch)
217{
218 assert(ohci_batch);
219 ed_set_end_td(ohci_batch->ed, ohci_batch->tds[ohci_batch->td_count]);
220}
221/*----------------------------------------------------------------------------*/
222/** Prepare generic control transfer
223 *
224 * @param[in] ohci_batch Batch structure to use.
225 * @param[in] dir Communication direction
226 *
227 * Setup stage with toggle 0 and direction BOTH(SETUP_PID)
228 * Data stage with alternating toggle and direction supplied by parameter.
229 * Status stage with toggle 1 and direction supplied by parameter.
230 */
231static void batch_control(ohci_transfer_batch_t *ohci_batch, usb_direction_t dir)
232{
233 assert(ohci_batch);
234 assert(ohci_batch->usb_batch);
235 assert(dir == USB_DIRECTION_IN || dir == USB_DIRECTION_OUT);
236 usb_log_debug("Using ED(%p): %x:%x:%x:%x.\n", ohci_batch->ed,
237 ohci_batch->ed->status, ohci_batch->ed->td_tail,
238 ohci_batch->ed->td_head, ohci_batch->ed->next);
239 static const usb_direction_t reverse_dir[] = {
240 [USB_DIRECTION_IN] = USB_DIRECTION_OUT,
241 [USB_DIRECTION_OUT] = USB_DIRECTION_IN,
242 };
243
244 int toggle = 0;
245 const char* buffer = ohci_batch->device_buffer;
246 const usb_direction_t data_dir = dir;
247 const usb_direction_t status_dir = reverse_dir[dir];
248
249 /* setup stage */
250 td_init(ohci_batch->tds[0], USB_DIRECTION_BOTH, buffer,
251 ohci_batch->usb_batch->setup_size, toggle);
252 td_set_next(ohci_batch->tds[0], ohci_batch->tds[1]);
253 usb_log_debug("Created CONTROL SETUP TD: %x:%x:%x:%x.\n",
254 ohci_batch->tds[0]->status, ohci_batch->tds[0]->cbp,
255 ohci_batch->tds[0]->next, ohci_batch->tds[0]->be);
256 buffer += ohci_batch->usb_batch->setup_size;
257
258 /* data stage */
259 size_t td_current = 1;
260 size_t remain_size = ohci_batch->usb_batch->buffer_size;
261 while (remain_size > 0) {
262 const size_t transfer_size =
263 remain_size > OHCI_TD_MAX_TRANSFER ?
264 OHCI_TD_MAX_TRANSFER : remain_size;
265 toggle = 1 - toggle;
266
267 td_init(ohci_batch->tds[td_current], data_dir, buffer,
268 transfer_size, toggle);
269 td_set_next(ohci_batch->tds[td_current],
270 ohci_batch->tds[td_current + 1]);
271 usb_log_debug("Created CONTROL DATA TD: %x:%x:%x:%x.\n",
272 ohci_batch->tds[td_current]->status,
273 ohci_batch->tds[td_current]->cbp,
274 ohci_batch->tds[td_current]->next,
275 ohci_batch->tds[td_current]->be);
276
277 buffer += transfer_size;
278 remain_size -= transfer_size;
279 assert(td_current < ohci_batch->td_count - 1);
280 ++td_current;
281 }
282
283 /* status stage */
284 assert(td_current == ohci_batch->td_count - 1);
285 td_init(ohci_batch->tds[td_current], status_dir, NULL, 0, 1);
286 td_set_next(ohci_batch->tds[td_current],
287 ohci_batch->tds[td_current + 1]);
288 usb_log_debug("Created CONTROL STATUS TD: %x:%x:%x:%x.\n",
289 ohci_batch->tds[td_current]->status,
290 ohci_batch->tds[td_current]->cbp,
291 ohci_batch->tds[td_current]->next,
292 ohci_batch->tds[td_current]->be);
293 usb_log_debug2(
294 "Batch %p %s %s " USB_TRANSFER_BATCH_FMT " initialized.\n", \
295 ohci_batch->usb_batch,
296 usb_str_transfer_type(ohci_batch->usb_batch->ep->transfer_type),
297 usb_str_direction(dir),
298 USB_TRANSFER_BATCH_ARGS(*ohci_batch->usb_batch));
299}
300/*----------------------------------------------------------------------------*/
301/** Prepare generic data transfer
302 *
303 * @param[in] ohci_batch Batch structure to use.
304 * @paramp[in] dir Communication direction.
305 *
306 * Direction is supplied by the associated ep and toggle is maintained by the
307 * OHCI hw in ED.
308 */
309static void batch_data(ohci_transfer_batch_t *ohci_batch, usb_direction_t dir)
310{
311 assert(ohci_batch);
312 assert(ohci_batch->usb_batch);
313 assert(dir == USB_DIRECTION_IN || dir == USB_DIRECTION_OUT);
314 usb_log_debug("Using ED(%p): %x:%x:%x:%x.\n", ohci_batch->ed,
315 ohci_batch->ed->status, ohci_batch->ed->td_tail,
316 ohci_batch->ed->td_head, ohci_batch->ed->next);
317
318 size_t td_current = 0;
319 size_t remain_size = ohci_batch->usb_batch->buffer_size;
320 char *buffer = ohci_batch->device_buffer;
321 while (remain_size > 0) {
322 const size_t transfer_size = remain_size > OHCI_TD_MAX_TRANSFER
323 ? OHCI_TD_MAX_TRANSFER : remain_size;
324
325 td_init(ohci_batch->tds[td_current], dir, buffer,
326 transfer_size, -1);
327 td_set_next(ohci_batch->tds[td_current],
328 ohci_batch->tds[td_current + 1]);
329
330 usb_log_debug("Created DATA TD: %x:%x:%x:%x.\n",
331 ohci_batch->tds[td_current]->status,
332 ohci_batch->tds[td_current]->cbp,
333 ohci_batch->tds[td_current]->next,
334 ohci_batch->tds[td_current]->be);
335
336 buffer += transfer_size;
337 remain_size -= transfer_size;
338 assert(td_current < ohci_batch->td_count);
339 ++td_current;
340 }
341 usb_log_debug2(
342 "Batch %p %s %s " USB_TRANSFER_BATCH_FMT " initialized.\n", \
343 ohci_batch->usb_batch,
344 usb_str_transfer_type(ohci_batch->usb_batch->ep->transfer_type),
345 usb_str_direction(dir),
346 USB_TRANSFER_BATCH_ARGS(*ohci_batch->usb_batch));
347}
348/*----------------------------------------------------------------------------*/
349static void (*const batch_setup[])(ohci_transfer_batch_t*, usb_direction_t) =
350{
351 [USB_TRANSFER_CONTROL] = batch_control,
352 [USB_TRANSFER_BULK] = batch_data,
353 [USB_TRANSFER_INTERRUPT] = batch_data,
354 [USB_TRANSFER_ISOCHRONOUS] = NULL,
355};
356/**
357 * @}
358 */
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