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[/] [gecko4/] [trunk/] [GECKO4com/] [fx2_firmware/] [c/] [usb_common.c] - Blame information for rev 2

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/* -*- c++ -*- */
/*
 * Copyright 2003 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * GNU Radio is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3, or (at your option)
 * any later version.
 *
 * GNU Radio is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */
 
#include <stdint.h>
#include <stdio.h>
 
#include "usb_common.h"
#include "fx2regs.h"
#include "syncdelay.h"
#include "fx2utils.h"
#include "isr.h"
#include "usb_descriptors.h"
#include "usb_requests.h"
 
extern xdata char str0[];
extern xdata char str1[];
extern xdata char str2[];
extern xdata char str3[];
extern xdata char str4[];
extern xdata char str5[];
 
 
sbit at 0x80+0 PA0;
sbit at 0x80+1 PA1;
sbit at 0x80+2 PA2;
sbit at 0x80+3 PA3;
sbit at 0x80+4 PA4;
sbit at 0x80+5 PA5;
sbit at 0x80+6 PA6;
sbit at 0x80+7 PA7;
 
#define MSB(x)  (((unsigned short) x) >> 8)
#define LSB(x)  (((unsigned short) x) & 0xff)
 
volatile bit _usb_got_SUDAV;
 
unsigned char   _usb_config = 0;
unsigned char   _usb_alt_setting = 0;    // FIXME really 1/interface
 
xdata unsigned char *current_device_descr;
xdata unsigned char *current_devqual_descr;
xdata unsigned char *current_config_descr;
xdata unsigned char *other_config_descr;
 
static void
setup_descriptors (void)
{
  if (USBCS & bmHSM){           // high speed mode
    current_device_descr  = high_speed_device_descr;
    current_devqual_descr = high_speed_devqual_descr;
    current_config_descr  = high_speed_config_descr;
    other_config_descr    = full_speed_config_descr;
    PA3 = 1; /* Indicate to the FPGA that we are in full speed */
  }
  else {
    current_device_descr  = full_speed_device_descr;
    current_devqual_descr = full_speed_devqual_descr;
    current_config_descr  = full_speed_config_descr;
    other_config_descr    = high_speed_config_descr;
    PA3 = 0; /* Indicate to the FPGA that we are in high speed */
  }
 
  // whack the type fields
  // FIXME, may not be required.
  // current_config_descr[1] = DT_CONFIG;
  // other_config_descr[1]   = DT_OTHER_SPEED;
}
 
static void
isr_SUDAV (void) interrupt
{
  clear_usb_irq ();
  _usb_got_SUDAV = 1;
}
 
static void
isr_USBRESET (void) interrupt
{
  clear_usb_irq ();
  setup_descriptors ();
 
}
 
static void
isr_HIGHSPEED (void) interrupt
{
  clear_usb_irq ();
  setup_descriptors ();
}
 
void
usb_install_handlers (void)
{
  setup_descriptors ();     // ensure that they're set before use
 
  hook_uv (UV_SUDAV,     (unsigned short) isr_SUDAV);
  hook_uv (UV_USBRESET,  (unsigned short) isr_USBRESET);
  hook_uv (UV_HIGHSPEED, (unsigned short) isr_HIGHSPEED);
 
  USBIE = bmSUDAV | bmURES | bmHSGRANT;
}
 
/** On the FX2 the only plausible endpoints are 0, 1, 2, 4, 6, 8
 * This doesn't check to see that they're enabled */
unsigned char
plausible_endpoint (unsigned char ep)
{
  ep &= ~0x80;  // ignore direction bit
 
  if (ep > 8)
    return 0;
 
  if (ep == 1)
    return 1;
 
  return (ep & 0x1) == 0;        // must be even
}
 
/** return pointer to control and status register for endpoint.
 * only called with plausible_endpoints */
xdata volatile unsigned char *
epcs (unsigned char ep)
{
  if (ep == 0x01)               // ep1 has different in and out CS regs
    return &EP1OUTCS;
 
  if (ep == 0x81)
    return &EP1INCS;
 
  ep &= ~0x80;                  // ignore direction bit
 
  if (ep == 0x00)               // ep0
    return &EP0CS;
 
  //return EP2CS + (ep >> 1);   // 2, 4, 6, 8 are consecutive
  return &EP1INCS + (ep >> 1);  // EP2CS -1; 2, 4, 6, 8 are consecutive
}
 
void
usb_handle_setup_packet (void)
{
  _usb_got_SUDAV = 0;
 
  switch (bRequestType & bmRT_TYPE_MASK){
 
  case bmRT_TYPE_CLASS:
    // call the application code class requests.
    // If it handles the command it returns non-zero
 
    if (!app_class_cmd ())
      fx2_stall_ep0 ();
    break;
 
  case bmRT_TYPE_RESERVED:
    fx2_stall_ep0 ();           // we don't handle these.  indicate error
    break;
 
  case bmRT_TYPE_VENDOR:
    // call the application code for vendor commands.
    // If it handles the command it returns non-zero
 
    if (!app_vendor_cmd ())
      fx2_stall_ep0 ();
    break;
 
  case bmRT_TYPE_STD:
    // these are the standard requests...
 
    if ((bRequestType & bmRT_DIR_MASK) == bmRT_DIR_IN){
 
      ////////////////////////////////////
      //    handle the IN requests
      ////////////////////////////////////
 
      switch (bRequest){
 
      case RQ_GET_CONFIG:
        EP0BUF[0] = _usb_config; // FIXME app should handle
        EP0BCH = 0;
        EP0BCL = 1;
        break;
 
      // --------------------------------
 
      case RQ_GET_INTERFACE:
        EP0BUF[0] = _usb_alt_setting;    // FIXME app should handle
        EP0BCH = 0;
        EP0BCL = 1;
        break;
 
      // --------------------------------
 
      case RQ_GET_DESCR:
        switch (wValueH){
 
        case DT_DEVICE:
          SUDPTRH = MSB (current_device_descr);
          SUDPTRL = LSB (current_device_descr);
          break;
 
        case DT_DEVQUAL:
          SUDPTRH = MSB (current_devqual_descr);
          SUDPTRL = LSB (current_devqual_descr);
          break;
 
        case DT_CONFIG:
          if (0 && wValueL != 1) // FIXME only a single configuration
            fx2_stall_ep0 ();
          else {
            SUDPTRH = MSB (current_config_descr);
            SUDPTRL = LSB (current_config_descr);
          }
          break;
 
        case DT_OTHER_SPEED:
          if (0 && wValueL != 1) // FIXME only a single configuration
            fx2_stall_ep0 ();
          else {
            SUDPTRH = MSB (other_config_descr);
            SUDPTRL = LSB (other_config_descr);
          }
          break;
 
        case DT_STRING:
          if (wValueL >= nstring_descriptors)
            fx2_stall_ep0 ();
          else {
            xdata char *p = string_descriptors[wValueL];
            SUDPTRH = MSB (p);
            SUDPTRL = LSB (p);
          }
          break;
 
        default:
          fx2_stall_ep0 ();     // invalid request
          break;
        }
        break;
 
      // --------------------------------
 
      case RQ_GET_STATUS:
        switch (bRequestType & bmRT_RECIP_MASK){
        case bmRT_RECIP_DEVICE:
          EP0BUF[0] = bmGSDA_SELF_POWERED;       // FIXME app should handle
          EP0BUF[1] = 0;
          EP0BCH = 0;
          EP0BCL = 2;
          break;
 
        case bmRT_RECIP_INTERFACE:
          EP0BUF[0] = 0;
          EP0BUF[1] = 0;
          EP0BCH = 0;
          EP0BCL = 2;
          break;
 
        case bmRT_RECIP_ENDPOINT:
          if (plausible_endpoint (wIndexL)){
            EP0BUF[0] = *epcs (wIndexL) & bmEPSTALL;
            EP0BUF[1] = 0;
            EP0BCH = 0;
            EP0BCL = 2;
          }
          else
            fx2_stall_ep0 ();
          break;
 
        default:
          fx2_stall_ep0 ();
          break;
        }
        break;
 
      // --------------------------------
 
      case RQ_SYNCH_FRAME:      // not implemented
      default:
        fx2_stall_ep0 ();
        break;
      }
    }
 
    else {
 
      ////////////////////////////////////
      //    handle the OUT requests
      ////////////////////////////////////
 
      switch (bRequest){
 
      case RQ_SET_CONFIG:
        _usb_config = wValueL;          // FIXME app should handle
        break;
 
      case RQ_SET_INTERFACE:
        _usb_alt_setting = wValueL;     // FIXME app should handle
        break;
 
      // --------------------------------
 
      case RQ_CLEAR_FEATURE:
        switch (bRequestType & bmRT_RECIP_MASK){
 
        case bmRT_RECIP_DEVICE:
          switch (wValueL){
          case FS_DEV_REMOTE_WAKEUP:
          default:
            fx2_stall_ep0 ();
          }
          break;
 
        case bmRT_RECIP_ENDPOINT:
          if (wValueL == FS_ENDPOINT_HALT && plausible_endpoint (wIndexL)){
            *epcs (wIndexL) &= ~bmEPSTALL;
            EP2CS &= ~bmEPSTALL;
            fx2_reset_data_toggle (wIndexL);
          }
          else
            fx2_stall_ep0 ();
          break;
 
        default:
          fx2_stall_ep0 ();
          break;
        }
        break;
 
      // --------------------------------
 
      case RQ_SET_FEATURE:
        switch (bRequestType & bmRT_RECIP_MASK){
 
        case bmRT_RECIP_DEVICE:
          switch (wValueL){
          case FS_TEST_MODE:
            // hardware handles this after we complete SETUP phase handshake
            break;
 
          case FS_DEV_REMOTE_WAKEUP:
          default:
            fx2_stall_ep0 ();
            break;
          }
        }
        break;
 
      case bmRT_RECIP_ENDPOINT:
        switch (wValueL){
        case FS_ENDPOINT_HALT:
          if (plausible_endpoint (wIndexL))
            *epcs (wIndexL) |= bmEPSTALL;
          else
            fx2_stall_ep0 ();
          break;
 
        default:
          fx2_stall_ep0 ();
          break;
        }
        break;
 
      // --------------------------------
 
      case RQ_SET_ADDRESS:      // handled by fx2 hardware
      case RQ_SET_DESCR:        // not implemented
      default:
        fx2_stall_ep0 ();
      }
 
    }
    break;
 
  }     // bmRT_TYPE_MASK
 
  // ack handshake phase of device request
  EP0CS |= bmHSNAK;
}

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Subversion Repositories gecko4

[/] [gecko4/] [trunk/] [GECKO4com/] [fx2_firmware/] [c/] [usb_common.c] - Blame information for rev 2

Line No.	Rev	Author	Line
1	2	ktt1	`/* -- c++ -- */`
2			`/*`
3			`* Copyright 2003 Free Software Foundation, Inc.`
4			`*`
5			`* This file is part of GNU Radio`
6			`*`
7			`* GNU Radio is free software; you can redistribute it and/or modify`
8			`* it under the terms of the GNU General Public License as published by`
9			`* the Free Software Foundation; either version 3, or (at your option)`
10			`* any later version.`
11			`*`
12			`* GNU Radio is distributed in the hope that it will be useful,`
13			`* but WITHOUT ANY WARRANTY; without even the implied warranty of`
14			`* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
15			`* GNU General Public License for more details.`
16			`*`
17			`* You should have received a copy of the GNU General Public License`
18			`* along with GNU Radio; see the file COPYING. If not, write to`
19			`* the Free Software Foundation, Inc., 51 Franklin Street,`
20			`* Boston, MA 02110-1301, USA.`
21			`*/`
22
23			`#include <stdint.h>`
24			`#include <stdio.h>`
25
26			`#include "usb_common.h"`
27			`#include "fx2regs.h"`
28			`#include "syncdelay.h"`
29			`#include "fx2utils.h"`
30			`#include "isr.h"`
31			`#include "usb_descriptors.h"`
32			`#include "usb_requests.h"`
33
34			`extern xdata char str0[];`
35			`extern xdata char str1[];`
36			`extern xdata char str2[];`
37			`extern xdata char str3[];`
38			`extern xdata char str4[];`
39			`extern xdata char str5[];`
40
41
42			`sbit at 0x80+0 PA0;`
43			`sbit at 0x80+1 PA1;`
44			`sbit at 0x80+2 PA2;`
45			`sbit at 0x80+3 PA3;`
46			`sbit at 0x80+4 PA4;`
47			`sbit at 0x80+5 PA5;`
48			`sbit at 0x80+6 PA6;`
49			`sbit at 0x80+7 PA7;`
50
51			`#define MSB(x) (((unsigned short) x) >> 8)`
52			`#define LSB(x) (((unsigned short) x) & 0xff)`
53
54			`volatile bit _usb_got_SUDAV;`
55
56			`unsigned char _usb_config = 0;`
57			`unsigned char _usb_alt_setting = 0; // FIXME really 1/interface`
58
59			`xdata unsigned char *current_device_descr;`
60			`xdata unsigned char *current_devqual_descr;`
61			`xdata unsigned char *current_config_descr;`
62			`xdata unsigned char *other_config_descr;`
63
64			`static void`
65			`setup_descriptors (void)`
66			`{`
67			`if (USBCS & bmHSM){ // high speed mode`
68			`current_device_descr = high_speed_device_descr;`
69			`current_devqual_descr = high_speed_devqual_descr;`
70			`current_config_descr = high_speed_config_descr;`
71			`other_config_descr = full_speed_config_descr;`
72			`PA3 = 1; /* Indicate to the FPGA that we are in full speed */`
73			`}`
74			`else {`
75			`current_device_descr = full_speed_device_descr;`
76			`current_devqual_descr = full_speed_devqual_descr;`
77			`current_config_descr = full_speed_config_descr;`
78			`other_config_descr = high_speed_config_descr;`
79			`PA3 = 0; /* Indicate to the FPGA that we are in high speed */`
80			`}`
81
82			`// whack the type fields`
83			`// FIXME, may not be required.`
84			`// current_config_descr[1] = DT_CONFIG;`
85			`// other_config_descr[1] = DT_OTHER_SPEED;`
86			`}`
87
88			`static void`
89			`isr_SUDAV (void) interrupt`
90			`{`
91			`clear_usb_irq ();`
92			`_usb_got_SUDAV = 1;`
93			`}`
94
95			`static void`
96			`isr_USBRESET (void) interrupt`
97			`{`
98			`clear_usb_irq ();`
99			`setup_descriptors ();`
100
101			`}`
102
103			`static void`
104			`isr_HIGHSPEED (void) interrupt`
105			`{`
106			`clear_usb_irq ();`
107			`setup_descriptors ();`
108			`}`
109
110			`void`
111			`usb_install_handlers (void)`
112			`{`
113			`setup_descriptors (); // ensure that they're set before use`
114
115			`hook_uv (UV_SUDAV, (unsigned short) isr_SUDAV);`
116			`hook_uv (UV_USBRESET, (unsigned short) isr_USBRESET);`
117			`hook_uv (UV_HIGHSPEED, (unsigned short) isr_HIGHSPEED);`
118
119			`USBIE = bmSUDAV \| bmURES \| bmHSGRANT;`
120			`}`
121
122			`/** On the FX2 the only plausible endpoints are 0, 1, 2, 4, 6, 8`
123			`* This doesn't check to see that they're enabled */`
124			`unsigned char`
125			`plausible_endpoint (unsigned char ep)`
126			`{`
127			`ep &= ~0x80; // ignore direction bit`
128
129			`if (ep > 8)`
130			`return 0;`
131
132			`if (ep == 1)`
133			`return 1;`
134
135			`return (ep & 0x1) == 0; // must be even`
136			`}`
137
138			`/** return pointer to control and status register for endpoint.`
139			`* only called with plausible_endpoints */`
140			`xdata volatile unsigned char *`
141			`epcs (unsigned char ep)`
142			`{`
143			`if (ep == 0x01) // ep1 has different in and out CS regs`
144			`return &EP1OUTCS;`
145
146			`if (ep == 0x81)`
147			`return &EP1INCS;`
148
149			`ep &= ~0x80; // ignore direction bit`
150
151			`if (ep == 0x00) // ep0`
152			`return &EP0CS;`
153
154			`//return EP2CS + (ep >> 1); // 2, 4, 6, 8 are consecutive`
155			`return &EP1INCS + (ep >> 1); // EP2CS -1; 2, 4, 6, 8 are consecutive`
156			`}`
157
158			`void`
159			`usb_handle_setup_packet (void)`
160			`{`
161			`_usb_got_SUDAV = 0;`
162
163			`switch (bRequestType & bmRT_TYPE_MASK){`
164
165			`case bmRT_TYPE_CLASS:`
166			`// call the application code class requests.`
167			`// If it handles the command it returns non-zero`
168
169			`if (!app_class_cmd ())`
170			`fx2_stall_ep0 ();`
171			`break;`
172
173			`case bmRT_TYPE_RESERVED:`
174			`fx2_stall_ep0 (); // we don't handle these. indicate error`
175			`break;`
176
177			`case bmRT_TYPE_VENDOR:`
178			`// call the application code for vendor commands.`
179			`// If it handles the command it returns non-zero`
180
181			`if (!app_vendor_cmd ())`
182			`fx2_stall_ep0 ();`
183			`break;`
184
185			`case bmRT_TYPE_STD:`
186			`// these are the standard requests...`
187
188			`if ((bRequestType & bmRT_DIR_MASK) == bmRT_DIR_IN){`
189
190			`////////////////////////////////////`
191			`// handle the IN requests`
192			`////////////////////////////////////`
193
194			`switch (bRequest){`
195
196			`case RQ_GET_CONFIG:`
197			`EP0BUF[0] = _usb_config; // FIXME app should handle`
198			`EP0BCH = 0;`
199			`EP0BCL = 1;`
200			`break;`
201
202			`// --------------------------------`
203
204			`case RQ_GET_INTERFACE:`
205			`EP0BUF[0] = _usb_alt_setting; // FIXME app should handle`
206			`EP0BCH = 0;`
207			`EP0BCL = 1;`
208			`break;`
209
210			`// --------------------------------`
211
212			`case RQ_GET_DESCR:`
213			`switch (wValueH){`
214
215			`case DT_DEVICE:`
216			`SUDPTRH = MSB (current_device_descr);`
217			`SUDPTRL = LSB (current_device_descr);`
218			`break;`
219
220			`case DT_DEVQUAL:`
221			`SUDPTRH = MSB (current_devqual_descr);`
222			`SUDPTRL = LSB (current_devqual_descr);`
223			`break;`
224
225			`case DT_CONFIG:`
226			`if (0 && wValueL != 1) // FIXME only a single configuration`
227			`fx2_stall_ep0 ();`
228			`else {`
229			`SUDPTRH = MSB (current_config_descr);`
230			`SUDPTRL = LSB (current_config_descr);`
231			`}`
232			`break;`
233
234			`case DT_OTHER_SPEED:`
235			`if (0 && wValueL != 1) // FIXME only a single configuration`
236			`fx2_stall_ep0 ();`
237			`else {`
238			`SUDPTRH = MSB (other_config_descr);`
239			`SUDPTRL = LSB (other_config_descr);`
240			`}`
241			`break;`
242
243			`case DT_STRING:`
244			`if (wValueL >= nstring_descriptors)`
245			`fx2_stall_ep0 ();`
246			`else {`
247			`xdata char *p = string_descriptors[wValueL];`
248			`SUDPTRH = MSB (p);`
249			`SUDPTRL = LSB (p);`
250			`}`
251			`break;`
252
253			`default:`
254			`fx2_stall_ep0 (); // invalid request`
255			`break;`
256			`}`
257			`break;`
258
259			`// --------------------------------`
260
261			`case RQ_GET_STATUS:`
262			`switch (bRequestType & bmRT_RECIP_MASK){`
263			`case bmRT_RECIP_DEVICE:`
264			`EP0BUF[0] = bmGSDA_SELF_POWERED; // FIXME app should handle`
265			`EP0BUF[1] = 0;`
266			`EP0BCH = 0;`
267			`EP0BCL = 2;`
268			`break;`
269
270			`case bmRT_RECIP_INTERFACE:`
271			`EP0BUF[0] = 0;`
272			`EP0BUF[1] = 0;`
273			`EP0BCH = 0;`
274			`EP0BCL = 2;`
275			`break;`
276
277			`case bmRT_RECIP_ENDPOINT:`
278			`if (plausible_endpoint (wIndexL)){`
279			`EP0BUF[0] = *epcs (wIndexL) & bmEPSTALL;`
280			`EP0BUF[1] = 0;`
281			`EP0BCH = 0;`
282			`EP0BCL = 2;`
283			`}`
284			`else`
285			`fx2_stall_ep0 ();`
286			`break;`
287
288			`default:`
289			`fx2_stall_ep0 ();`
290			`break;`
291			`}`
292			`break;`
293
294			`// --------------------------------`
295
296			`case RQ_SYNCH_FRAME: // not implemented`
297			`default:`
298			`fx2_stall_ep0 ();`
299			`break;`
300			`}`
301			`}`
302
303			`else {`
304
305			`////////////////////////////////////`
306			`// handle the OUT requests`
307			`////////////////////////////////////`
308
309			`switch (bRequest){`
310
311			`case RQ_SET_CONFIG:`
312			`_usb_config = wValueL; // FIXME app should handle`
313			`break;`
314
315			`case RQ_SET_INTERFACE:`
316			`_usb_alt_setting = wValueL; // FIXME app should handle`
317			`break;`
318
319			`// --------------------------------`
320
321			`case RQ_CLEAR_FEATURE:`
322			`switch (bRequestType & bmRT_RECIP_MASK){`
323
324			`case bmRT_RECIP_DEVICE:`
325			`switch (wValueL){`
326			`case FS_DEV_REMOTE_WAKEUP:`
327			`default:`
328			`fx2_stall_ep0 ();`
329			`}`
330			`break;`
331
332			`case bmRT_RECIP_ENDPOINT:`
333			`if (wValueL == FS_ENDPOINT_HALT && plausible_endpoint (wIndexL)){`
334			`*epcs (wIndexL) &= ~bmEPSTALL;`
335			`EP2CS &= ~bmEPSTALL;`
336			`fx2_reset_data_toggle (wIndexL);`
337			`}`
338			`else`
339			`fx2_stall_ep0 ();`
340			`break;`
341
342			`default:`
343			`fx2_stall_ep0 ();`
344			`break;`
345			`}`
346			`break;`
347
348			`// --------------------------------`
349
350			`case RQ_SET_FEATURE:`
351			`switch (bRequestType & bmRT_RECIP_MASK){`
352
353			`case bmRT_RECIP_DEVICE:`
354			`switch (wValueL){`
355			`case FS_TEST_MODE:`
356			`// hardware handles this after we complete SETUP phase handshake`
357			`break;`
358
359			`case FS_DEV_REMOTE_WAKEUP:`
360			`default:`
361			`fx2_stall_ep0 ();`
362			`break;`
363			`}`
364			`}`
365			`break;`
366
367			`case bmRT_RECIP_ENDPOINT:`
368			`switch (wValueL){`
369			`case FS_ENDPOINT_HALT:`
370			`if (plausible_endpoint (wIndexL))`
371			`*epcs (wIndexL) \|= bmEPSTALL;`
372			`else`
373			`fx2_stall_ep0 ();`
374			`break;`
375
376			`default:`
377			`fx2_stall_ep0 ();`
378			`break;`
379			`}`
380			`break;`
381
382			`// --------------------------------`
383
384			`case RQ_SET_ADDRESS: // handled by fx2 hardware`
385			`case RQ_SET_DESCR: // not implemented`
386			`default:`
387			`fx2_stall_ep0 ();`
388			`}`
389
390			`}`
391			`break;`
392
393			`} // bmRT_TYPE_MASK`
394
395			`// ack handshake phase of device request`
396			`EP0CS \|= bmHSNAK;`
397			`}`