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347 lines
11 KiB
347 lines
11 KiB
1 year ago
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/* USB EHCI Host for Teensy 3.6
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* Copyright 2017 Paul Stoffregen (paul@pjrc.com)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <Arduino.h>
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#include "USBHost_t36.h" // Read this header first for key info
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// Printing of specific data structures. When this is enabled,
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// a tremendous amount of debug printing occurs. It's done all
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// from interrupt context, so this should never normally be
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// enabled for regular programs that print from the Arduino sketch.
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#ifdef USBHOST_PRINT_DEBUG
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void USBHost::print_(const Transfer_t *transfer)
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{
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if (!((uint32_t)transfer & 0xFFFFFFE0)) return;
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USBHDBGSerial.print("Transfer @ ");
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USBHDBGSerial.println(((uint32_t)transfer & 0xFFFFFFE0), HEX);
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USBHDBGSerial.print(" next: ");
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USBHDBGSerial.println(transfer->qtd.next, HEX);
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USBHDBGSerial.print(" anext: ");
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USBHDBGSerial.println(transfer->qtd.alt_next, HEX);
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USBHDBGSerial.print(" token: ");
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USBHDBGSerial.println(transfer->qtd.token, HEX);
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USBHDBGSerial.print(" bufs: ");
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for (int i=0; i < 5; i++) {
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USBHDBGSerial.print(transfer->qtd.buffer[i], HEX);
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if (i < 4) USBHDBGSerial.print(',');
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}
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USBHDBGSerial.println();
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}
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void USBHost::print_(const Transfer_t *first, const Transfer_t *last)
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{
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USBHDBGSerial.print("Transfer Followup List ");
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USBHDBGSerial.print((uint32_t)first, HEX);
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USBHDBGSerial.print(" to ");
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USBHDBGSerial.println((uint32_t)last, HEX);
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USBHDBGSerial.println(" forward:");
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while (first) {
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USBHDBGSerial.print(" ");
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USBHDBGSerial.print((uint32_t)first, HEX);
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print_token(first->qtd.token);
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first = first->next_followup;
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}
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USBHDBGSerial.println(" backward:");
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while (last) {
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USBHDBGSerial.print(" ");
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USBHDBGSerial.print((uint32_t)last, HEX);
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print_token(last->qtd.token);
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last = last->prev_followup;
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}
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}
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void USBHost::print_token(uint32_t token)
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{
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switch ((token >> 8) & 3) {
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case 0:
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USBHDBGSerial.print(" OUT ");
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USBHDBGSerial.println((token >> 16) & 0x7FFF);
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break;
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case 1:
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USBHDBGSerial.print(" IN ");
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USBHDBGSerial.println((token >> 16) & 0x7FFF);
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break;
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case 2:
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USBHDBGSerial.println(" SETUP");
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break;
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default:
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USBHDBGSerial.println(" unknown");
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}
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}
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void USBHost::print_(const Pipe_t *pipe)
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{
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if (!((uint32_t)pipe & 0xFFFFFFE0)) return;
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USBHDBGSerial.print("Pipe ");
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if (pipe->type == 0) USBHDBGSerial.print("control");
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else if (pipe->type == 1) USBHDBGSerial.print("isochronous");
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else if (pipe->type == 2) USBHDBGSerial.print("bulk");
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else if (pipe->type == 3) USBHDBGSerial.print("interrupt");
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USBHDBGSerial.print(pipe->direction ? " IN" : " OUT");
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USBHDBGSerial.print(" @ ");
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USBHDBGSerial.println((uint32_t)pipe, HEX);
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USBHDBGSerial.print(" horiz link: ");
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USBHDBGSerial.println(pipe->qh.horizontal_link, HEX);
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USBHDBGSerial.print(" capabilities: ");
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USBHDBGSerial.print(pipe->qh.capabilities[0], HEX);
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USBHDBGSerial.print(',');
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USBHDBGSerial.println(pipe->qh.capabilities[1], HEX);
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USBHDBGSerial.println(" overlay:");
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USBHDBGSerial.print(" cur: ");
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USBHDBGSerial.println(pipe->qh.current, HEX);
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USBHDBGSerial.print(" next: ");
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USBHDBGSerial.println(pipe->qh.next, HEX);
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USBHDBGSerial.print(" anext: ");
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USBHDBGSerial.println(pipe->qh.alt_next, HEX);
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USBHDBGSerial.print(" token: ");
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USBHDBGSerial.println(pipe->qh.token, HEX);
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USBHDBGSerial.print(" bufs: ");
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for (int i=0; i < 5; i++) {
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USBHDBGSerial.print(pipe->qh.buffer[i], HEX);
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if (i < 4) USBHDBGSerial.print(',');
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}
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USBHDBGSerial.println();
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const Transfer_t *t = (Transfer_t *)pipe->qh.next;
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while (((uint32_t)t & 0xFFFFFFE0)) {
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print_(t);
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t = (Transfer_t *)t->qtd.next;
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}
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//USBHDBGSerial.print();
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}
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void USBHost::print_driverlist(const char *name, const USBDriver *driver)
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{
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USBHDBGSerial.print("USBDriver (");
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USBHDBGSerial.print(name);
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USBHDBGSerial.print(") list: ");
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if (driver == NULL) {
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USBHDBGSerial.println("(empty");
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return;
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}
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uint32_t count=0;
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for (const USBDriver *p = driver; p; p = p->next) {
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USBHDBGSerial.print((uint32_t)p, HEX);
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if (p->next) USBHDBGSerial.print(" -> ");
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if (++count > 30) {
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USBHDBGSerial.println("abort:list too long");
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return;
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}
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}
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USBHDBGSerial.println();
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}
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void USBHost::print_qh_list(const Pipe_t *list)
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{
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if (!list) {
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USBHDBGSerial.println("(empty)");
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return;
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}
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const Pipe_t *node = list;
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uint8_t max_print = 32; // max number of items..
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while (1) {
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USBHDBGSerial.print((uint32_t)node, HEX);
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const Pipe_t *next_node = (const Pipe_t *)(node->qh.horizontal_link & 0xFFFFFFE0);
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if (!next_node) break;
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// Lets check for loops
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const Pipe_t *nt = list;
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while (nt != node) {
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if (nt == next_node) break;
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nt = (const Pipe_t *)(nt->qh.horizontal_link & 0xFFFFFFE0);
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}
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if (nt != node) {
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USBHDBGSerial.print(" -> (loops) ");
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USBHDBGSerial.print((uint32_t)next_node, HEX);
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break;
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}
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node = next_node;
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if (!max_print--) {
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USBHDBGSerial.print(" (Probable Loop)");
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break;
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}
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USBHDBGSerial.print(" -> ");
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}
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USBHDBGSerial.println();
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}
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static void print_class_subclass_protocol(uint8_t c, uint8_t s, uint8_t p)
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{
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USBHDBGSerial.print(c);
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if (c == 3) USBHDBGSerial.print("(HID)");
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if (c == 8) USBHDBGSerial.print("(Mass Storage)");
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if (c == 9) USBHDBGSerial.print("(Hub)");
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USBHDBGSerial.print(" / ");
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USBHDBGSerial.print(s);
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if (c == 3 && s == 1) USBHDBGSerial.print("(Boot)");
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if (c == 8 && s == 6) USBHDBGSerial.print("(SCSI)");
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USBHDBGSerial.print(" / ");
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USBHDBGSerial.print(p);
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if (c == 3 && s == 1 && p == 1) USBHDBGSerial.print("(Keyboard)");
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if (c == 3 && s == 1 && p == 2) USBHDBGSerial.print("(Mouse)");
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if (c == 8 && s == 6 && p == 0x50) USBHDBGSerial.print("(Bulk Only)");
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if (c == 8 && s == 6 && p == 0x62) USBHDBGSerial.print("(UAS)");
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if (c == 9 && s == 0 && p == 1) USBHDBGSerial.print("(Single-TT)");
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if (c == 9 && s == 0 && p == 2) USBHDBGSerial.print("(Multi-TT)");
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USBHDBGSerial.println();
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}
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void USBHost::print_device_descriptor(const uint8_t *p)
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{
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USBHDBGSerial.println("Device Descriptor:");
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USBHDBGSerial.print(" ");
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print_hexbytes(p, p[0]);
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if (p[0] != 18) {
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USBHDBGSerial.println("error: device must be 18 bytes");
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return;
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}
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if (p[1] != 1) {
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USBHDBGSerial.println("error: device must type 1");
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return;
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}
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USBHDBGSerial.printf(" VendorID = %04X, ProductID = %04X, Version = %04X",
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p[8] | (p[9] << 8), p[10] | (p[11] << 8), p[12] | (p[13] << 8));
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USBHDBGSerial.println();
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USBHDBGSerial.print(" Class/Subclass/Protocol = ");
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print_class_subclass_protocol(p[4], p[5], p[6]);
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USBHDBGSerial.print(" Number of Configurations = ");
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USBHDBGSerial.println(p[17]);
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}
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void USBHost::print_config_descriptor(const uint8_t *p, uint32_t maxlen)
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{
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// Descriptor Types: (USB 2.0, page 251)
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USBHDBGSerial.println("Configuration Descriptor:");
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USBHDBGSerial.print(" ");
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print_hexbytes(p, p[0]);
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if (p[0] != 9) {
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USBHDBGSerial.println("error: config must be 9 bytes");
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return;
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}
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if (p[1] != 2) {
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USBHDBGSerial.println("error: config must type 2");
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return;
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}
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USBHDBGSerial.print(" NumInterfaces = ");
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USBHDBGSerial.println(p[4]);
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USBHDBGSerial.print(" ConfigurationValue = ");
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USBHDBGSerial.println(p[5]);
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uint32_t len = p[2] | (p[3] << 8);
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if (len > maxlen) len = maxlen;
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len -= p[0];
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p += 9;
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while (len > 0) {
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if (p[0] > len) {
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USBHDBGSerial.print(" ");
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print_hexbytes(p, len);
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USBHDBGSerial.println(" error: length beyond total data size");
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break;
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}
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USBHDBGSerial.print(" ");
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print_hexbytes(p, p[0]);
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if (p[0] == 9 && p[1] == 4) { // Interface Descriptor
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USBHDBGSerial.print(" Interface = ");
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USBHDBGSerial.println(p[2]);
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USBHDBGSerial.print(" Number of endpoints = ");
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USBHDBGSerial.println(p[4]);
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USBHDBGSerial.print(" Class/Subclass/Protocol = ");
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print_class_subclass_protocol(p[5], p[6], p[7]);
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} else if (p[0] >= 7 && p[0] <= 9 && p[1] == 5) { // Endpoint Descriptor
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USBHDBGSerial.print(" Endpoint = ");
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USBHDBGSerial.print(p[2] & 15);
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USBHDBGSerial.println((p[2] & 128) ? " IN" : " OUT");
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USBHDBGSerial.print(" Type = ");
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switch (p[3] & 3) {
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case 0: USBHDBGSerial.println("Control"); break;
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case 1: USBHDBGSerial.println("Isochronous"); break;
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case 2: USBHDBGSerial.println("Bulk"); break;
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case 3: USBHDBGSerial.println("Interrupt"); break;
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}
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USBHDBGSerial.print(" Max Size = ");
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USBHDBGSerial.println(p[4] | (p[5] << 8));
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USBHDBGSerial.print(" Polling Interval = ");
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USBHDBGSerial.println(p[6]);
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} else if (p[0] == 8 && p[1] == 11) { // IAD
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USBHDBGSerial.print(" Interface Association = ");
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USBHDBGSerial.print(p[2]);
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USBHDBGSerial.print(" through ");
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USBHDBGSerial.println(p[2] + p[3] - 1);
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USBHDBGSerial.print(" Class / Subclass / Protocol = ");
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print_class_subclass_protocol(p[4], p[5], p[7]);
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} else if (p[0] >= 9 && p[1] == 0x21) { // HID
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USBHDBGSerial.print(" HID, ");
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USBHDBGSerial.print(p[5]);
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USBHDBGSerial.print(" report descriptor");
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if (p[5] != 1) USBHDBGSerial.print('s');
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USBHDBGSerial.println();
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}
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len -= p[0];
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p += p[0];
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}
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}
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void USBHost::print_string_descriptor(const char *name, const uint8_t *p)
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{
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uint32_t len = p[0];
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if (len < 4) return;
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USBHDBGSerial.print(name);
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len -= 2;
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p += 2;
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while (len >= 2) {
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uint32_t c = p[0] | (p[1] << 8);
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if (c < 0x80) {
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USBHDBGSerial.write(c);
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} else if (c < 0x800) {
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USBHDBGSerial.write((c >> 6) | 0xC0);
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USBHDBGSerial.write((c & 0x3F) | 0x80);
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} else {
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USBHDBGSerial.write((c >> 12) | 0xE0);
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USBHDBGSerial.write(((c >> 6) & 0x3F) | 0x80);
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USBHDBGSerial.write((c & 0x3F) | 0x80);
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}
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len -= 2;
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p += 2;
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}
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USBHDBGSerial.println();
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//print_hexbytes(p, p[0]);
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}
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void USBHost::print_hexbytes(const void *ptr, uint32_t len)
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{
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|
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if (ptr == NULL || len == 0) return;
|
||
|
|
const uint8_t *p = (const uint8_t *)ptr;
|
||
|
|
do {
|
||
|
|
if (*p < 16) USBHDBGSerial.print('0');
|
||
|
|
USBHDBGSerial.print(*p++, HEX);
|
||
|
|
USBHDBGSerial.print(' ');
|
||
|
|
} while (--len);
|
||
|
|
USBHDBGSerial.println();
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|