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1 /*-
2  * Copyright (c) 2000 Iwasa Kazmi
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  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions, and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
18  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * This code is based on ugen.c and ulpt.c developed by Lennart Augustsson.
27  * This code includes software developed by the NetBSD Foundation, Inc. and
28  * its contributors.
29  */
30
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
33
34
35 /*
36  * 2000/3/24  added NetBSD/OpenBSD support (from Alex Nemirovsky)
37  * 2000/3/07  use two bulk-pipe handles for read and write (Dirk)
38  * 2000/3/06  change major number(143), and copyright header
39  *            some fix for 4.0 (Dirk)
40  * 2000/3/05  codes for FreeBSD 4.x - CURRENT (Thanks to Dirk-Willem van Gulik)
41  * 2000/3/01  remove retry code from urioioctl()
42  *            change method of bulk transfer (no interrupt)
43  * 2000/2/28  small fixes for new rio_usb.h
44  * 2000/2/24  first version.
45  */
46
47 #include <sys/stdint.h>
48 #include <sys/stddef.h>
49 #include <sys/param.h>
50 #include <sys/queue.h>
51 #include <sys/types.h>
52 #include <sys/systm.h>
53 #include <sys/kernel.h>
54 #include <sys/bus.h>
55 #include <sys/linker_set.h>
56 #include <sys/module.h>
57 #include <sys/lock.h>
58 #include <sys/mutex.h>
59 #include <sys/condvar.h>
60 #include <sys/sysctl.h>
61 #include <sys/sx.h>
62 #include <sys/unistd.h>
63 #include <sys/callout.h>
64 #include <sys/malloc.h>
65 #include <sys/priv.h>
66 #include <sys/conf.h>
67 #include <sys/fcntl.h>
68
69 #include <dev/usb/usb.h>
70 #include <dev/usb/usbdi.h>
71 #include "usbdevs.h"
72
73 #include <dev/usb/usb_ioctl.h>
74 #include <dev/usb/usb_generic.h>
75
76 #define USB_DEBUG_VAR urio_debug
77 #include <dev/usb/usb_debug.h>
78
79 #include <dev/usb/storage/rio500_usb.h>
80
81 #ifdef USB_DEBUG
82 static int urio_debug = 0;
83
84 SYSCTL_NODE(_hw_usb, OID_AUTO, urio, CTLFLAG_RW, 0, "USB urio");
85 SYSCTL_INT(_hw_usb_urio, OID_AUTO, debug, CTLFLAG_RW,
86     &urio_debug, 0, "urio debug level");
87 #endif
88
89 #define URIO_T_WR     0
90 #define URIO_T_RD     1
91 #define URIO_T_WR_CS  2
92 #define URIO_T_RD_CS  3
93 #define URIO_T_MAX    4
94
95 #define URIO_BSIZE      (1<<12)         /* bytes */
96 #define URIO_IFQ_MAXLEN      2          /* units */
97
98 struct urio_softc {
99         struct usb_fifo_sc sc_fifo;
100         struct mtx sc_mtx;
101
102         struct usb_device *sc_udev;
103         struct usb_xfer *sc_xfer[URIO_T_MAX];
104
105         uint8_t sc_flags;
106 #define URIO_FLAG_READ_STALL    0x01    /* read transfer stalled */
107 #define URIO_FLAG_WRITE_STALL   0x02    /* write transfer stalled */
108
109         uint8_t sc_name[16];
110 };
111
112 /* prototypes */
113
114 static device_probe_t urio_probe;
115 static device_attach_t urio_attach;
116 static device_detach_t urio_detach;
117
118 static usb_callback_t urio_write_callback;
119 static usb_callback_t urio_write_clear_stall_callback;
120 static usb_callback_t urio_read_callback;
121 static usb_callback_t urio_read_clear_stall_callback;
122
123 static usb_fifo_close_t urio_close;
124 static usb_fifo_cmd_t urio_start_read;
125 static usb_fifo_cmd_t urio_start_write;
126 static usb_fifo_cmd_t urio_stop_read;
127 static usb_fifo_cmd_t urio_stop_write;
128 static usb_fifo_ioctl_t urio_ioctl;
129 static usb_fifo_open_t urio_open;
130
131 static struct usb_fifo_methods urio_fifo_methods = {
132         .f_close = &urio_close,
133         .f_ioctl = &urio_ioctl,
134         .f_open = &urio_open,
135         .f_start_read = &urio_start_read,
136         .f_start_write = &urio_start_write,
137         .f_stop_read = &urio_stop_read,
138         .f_stop_write = &urio_stop_write,
139         .basename[0] = "urio",
140 };
141
142 static const struct usb_config urio_config[URIO_T_MAX] = {
143         [URIO_T_WR] = {
144                 .type = UE_BULK,
145                 .endpoint = UE_ADDR_ANY,
146                 .direction = UE_DIR_OUT,
147                 .bufsize = URIO_BSIZE,
148                 .flags = {.pipe_bof = 1,.force_short_xfer = 1,.proxy_buffer = 1,},
149                 .callback = &urio_write_callback,
150         },
151
152         [URIO_T_RD] = {
153                 .type = UE_BULK,
154                 .endpoint = UE_ADDR_ANY,
155                 .direction = UE_DIR_IN,
156                 .bufsize = URIO_BSIZE,
157                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,.proxy_buffer = 1,},
158                 .callback = &urio_read_callback,
159         },
160
161         [URIO_T_WR_CS] = {
162                 .type = UE_CONTROL,
163                 .endpoint = 0x00,       /* Control pipe */
164                 .direction = UE_DIR_ANY,
165                 .bufsize = sizeof(struct usb_device_request),
166                 .callback = &urio_write_clear_stall_callback,
167                 .timeout = 1000,        /* 1 second */
168                 .interval = 50, /* 50ms */
169         },
170
171         [URIO_T_RD_CS] = {
172                 .type = UE_CONTROL,
173                 .endpoint = 0x00,       /* Control pipe */
174                 .direction = UE_DIR_ANY,
175                 .bufsize = sizeof(struct usb_device_request),
176                 .callback = &urio_read_clear_stall_callback,
177                 .timeout = 1000,        /* 1 second */
178                 .interval = 50, /* 50ms */
179         },
180 };
181
182 static devclass_t urio_devclass;
183
184 static device_method_t urio_methods[] = {
185         /* Device interface */
186         DEVMETHOD(device_probe, urio_probe),
187         DEVMETHOD(device_attach, urio_attach),
188         DEVMETHOD(device_detach, urio_detach),
189         {0, 0}
190 };
191
192 static driver_t urio_driver = {
193         .name = "urio",
194         .methods = urio_methods,
195         .size = sizeof(struct urio_softc),
196 };
197
198 DRIVER_MODULE(urio, uhub, urio_driver, urio_devclass, NULL, 0);
199 MODULE_DEPEND(urio, usb, 1, 1, 1);
200
201 static int
202 urio_probe(device_t dev)
203 {
204         struct usb_attach_arg *uaa = device_get_ivars(dev);
205
206         if (uaa->usb_mode != USB_MODE_HOST) {
207                 return (ENXIO);
208         }
209         if ((((uaa->info.idVendor == USB_VENDOR_DIAMOND) &&
210             (uaa->info.idProduct == USB_PRODUCT_DIAMOND_RIO500USB)) ||
211             ((uaa->info.idVendor == USB_VENDOR_DIAMOND2) &&
212             ((uaa->info.idProduct == USB_PRODUCT_DIAMOND2_RIO600USB) ||
213             (uaa->info.idProduct == USB_PRODUCT_DIAMOND2_RIO800USB)))))
214                 return (0);
215         else
216                 return (ENXIO);
217 }
218
219 static int
220 urio_attach(device_t dev)
221 {
222         struct usb_attach_arg *uaa = device_get_ivars(dev);
223         struct urio_softc *sc = device_get_softc(dev);
224         int error;
225
226         device_set_usb_desc(dev);
227
228         sc->sc_udev = uaa->device;
229
230         mtx_init(&sc->sc_mtx, "urio lock", NULL, MTX_DEF | MTX_RECURSE);
231
232         snprintf(sc->sc_name, sizeof(sc->sc_name),
233             "%s", device_get_nameunit(dev));
234
235         error = usbd_transfer_setup(uaa->device,
236             &uaa->info.bIfaceIndex, sc->sc_xfer,
237             urio_config, URIO_T_MAX, sc, &sc->sc_mtx);
238
239         if (error) {
240                 DPRINTF("error=%s\n", usbd_errstr(error));
241                 goto detach;
242         }
243
244         error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx,
245             &urio_fifo_methods, &sc->sc_fifo,
246             device_get_unit(dev), 0 - 1, uaa->info.bIfaceIndex,
247             UID_ROOT, GID_OPERATOR, 0644);
248         if (error) {
249                 goto detach;
250         }
251         return (0);                     /* success */
252
253 detach:
254         urio_detach(dev);
255         return (ENOMEM);                /* failure */
256 }
257
258 static void
259 urio_write_callback(struct usb_xfer *xfer, usb_error_t error)
260 {
261         struct urio_softc *sc = usbd_xfer_softc(xfer);
262         struct usb_fifo *f = sc->sc_fifo.fp[USB_FIFO_TX];
263         struct usb_page_cache *pc;
264         uint32_t actlen;
265
266         switch (USB_GET_STATE(xfer)) {
267         case USB_ST_TRANSFERRED:
268         case USB_ST_SETUP:
269                 if (sc->sc_flags & URIO_FLAG_WRITE_STALL) {
270                         usbd_transfer_start(sc->sc_xfer[URIO_T_WR_CS]);
271                         return;
272                 }
273                 pc = usbd_xfer_get_frame(xfer, 0);
274                 if (usb_fifo_get_data(f, pc, 0,
275                     usbd_xfer_max_len(xfer), &actlen, 0)) {
276
277                         usbd_xfer_set_frame_len(xfer, 0, actlen);
278                         usbd_transfer_submit(xfer);
279                 }
280                 return;
281
282         default:                        /* Error */
283                 if (error != USB_ERR_CANCELLED) {
284                         /* try to clear stall first */
285                         sc->sc_flags |= URIO_FLAG_WRITE_STALL;
286                         usbd_transfer_start(sc->sc_xfer[URIO_T_WR_CS]);
287                 }
288                 return;
289         }
290 }
291
292 static void
293 urio_write_clear_stall_callback(struct usb_xfer *xfer, usb_error_t error)
294 {
295         struct urio_softc *sc = usbd_xfer_softc(xfer);
296         struct usb_xfer *xfer_other = sc->sc_xfer[URIO_T_WR];
297
298         if (usbd_clear_stall_callback(xfer, xfer_other)) {
299                 DPRINTF("stall cleared\n");
300                 sc->sc_flags &= ~URIO_FLAG_WRITE_STALL;
301                 usbd_transfer_start(xfer_other);
302         }
303 }
304
305 static void
306 urio_read_callback(struct usb_xfer *xfer, usb_error_t error)
307 {
308         struct urio_softc *sc = usbd_xfer_softc(xfer);
309         struct usb_fifo *f = sc->sc_fifo.fp[USB_FIFO_RX];
310         struct usb_page_cache *pc;
311         int actlen;
312
313         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
314
315         switch (USB_GET_STATE(xfer)) {
316         case USB_ST_TRANSFERRED:
317                 pc = usbd_xfer_get_frame(xfer, 0);
318                 usb_fifo_put_data(f, pc, 0, actlen, 1);
319
320         case USB_ST_SETUP:
321                 if (sc->sc_flags & URIO_FLAG_READ_STALL) {
322                         usbd_transfer_start(sc->sc_xfer[URIO_T_RD_CS]);
323                         return;
324                 }
325                 if (usb_fifo_put_bytes_max(f) != 0) {
326                         usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
327                         usbd_transfer_submit(xfer);
328                 }
329                 return;
330
331         default:                        /* Error */
332                 if (error != USB_ERR_CANCELLED) {
333                         /* try to clear stall first */
334                         sc->sc_flags |= URIO_FLAG_READ_STALL;
335                         usbd_transfer_start(sc->sc_xfer[URIO_T_RD_CS]);
336                 }
337                 return;
338         }
339 }
340
341 static void
342 urio_read_clear_stall_callback(struct usb_xfer *xfer, usb_error_t error)
343 {
344         struct urio_softc *sc = usbd_xfer_softc(xfer);
345         struct usb_xfer *xfer_other = sc->sc_xfer[URIO_T_RD];
346
347         if (usbd_clear_stall_callback(xfer, xfer_other)) {
348                 DPRINTF("stall cleared\n");
349                 sc->sc_flags &= ~URIO_FLAG_READ_STALL;
350                 usbd_transfer_start(xfer_other);
351         }
352 }
353
354 static void
355 urio_start_read(struct usb_fifo *fifo)
356 {
357         struct urio_softc *sc = usb_fifo_softc(fifo);
358
359         usbd_transfer_start(sc->sc_xfer[URIO_T_RD]);
360 }
361
362 static void
363 urio_stop_read(struct usb_fifo *fifo)
364 {
365         struct urio_softc *sc = usb_fifo_softc(fifo);
366
367         usbd_transfer_stop(sc->sc_xfer[URIO_T_RD_CS]);
368         usbd_transfer_stop(sc->sc_xfer[URIO_T_RD]);
369 }
370
371 static void
372 urio_start_write(struct usb_fifo *fifo)
373 {
374         struct urio_softc *sc = usb_fifo_softc(fifo);
375
376         usbd_transfer_start(sc->sc_xfer[URIO_T_WR]);
377 }
378
379 static void
380 urio_stop_write(struct usb_fifo *fifo)
381 {
382         struct urio_softc *sc = usb_fifo_softc(fifo);
383
384         usbd_transfer_stop(sc->sc_xfer[URIO_T_WR_CS]);
385         usbd_transfer_stop(sc->sc_xfer[URIO_T_WR]);
386 }
387
388 static int
389 urio_open(struct usb_fifo *fifo, int fflags)
390 {
391         struct urio_softc *sc = usb_fifo_softc(fifo);
392
393         if (fflags & FREAD) {
394                 /* clear stall first */
395                 mtx_lock(&sc->sc_mtx);
396                 sc->sc_flags |= URIO_FLAG_READ_STALL;
397                 mtx_unlock(&sc->sc_mtx);
398
399                 if (usb_fifo_alloc_buffer(fifo,
400                     usbd_xfer_max_len(sc->sc_xfer[URIO_T_RD]),
401                     URIO_IFQ_MAXLEN)) {
402                         return (ENOMEM);
403                 }
404         }
405         if (fflags & FWRITE) {
406                 /* clear stall first */
407                 sc->sc_flags |= URIO_FLAG_WRITE_STALL;
408
409                 if (usb_fifo_alloc_buffer(fifo,
410                     usbd_xfer_max_len(sc->sc_xfer[URIO_T_WR]),
411                     URIO_IFQ_MAXLEN)) {
412                         return (ENOMEM);
413                 }
414         }
415         return (0);                     /* success */
416 }
417
418 static void
419 urio_close(struct usb_fifo *fifo, int fflags)
420 {
421         if (fflags & (FREAD | FWRITE)) {
422                 usb_fifo_free_buffer(fifo);
423         }
424 }
425
426 static int
427 urio_ioctl(struct usb_fifo *fifo, u_long cmd, void *addr,
428     int fflags)
429 {
430         struct usb_ctl_request ur;
431         struct RioCommand *rio_cmd;
432         int error;
433
434         switch (cmd) {
435         case RIO_RECV_COMMAND:
436                 if (!(fflags & FWRITE)) {
437                         error = EPERM;
438                         goto done;
439                 }
440                 bzero(&ur, sizeof(ur));
441                 rio_cmd = addr;
442                 ur.ucr_request.bmRequestType =
443                     rio_cmd->requesttype | UT_READ_VENDOR_DEVICE;
444                 break;
445
446         case RIO_SEND_COMMAND:
447                 if (!(fflags & FWRITE)) {
448                         error = EPERM;
449                         goto done;
450                 }
451                 bzero(&ur, sizeof(ur));
452                 rio_cmd = addr;
453                 ur.ucr_request.bmRequestType =
454                     rio_cmd->requesttype | UT_WRITE_VENDOR_DEVICE;
455                 break;
456
457         default:
458                 error = EINVAL;
459                 goto done;
460         }
461
462         DPRINTFN(2, "Sending command\n");
463
464         /* Send rio control message */
465         ur.ucr_request.bRequest = rio_cmd->request;
466         USETW(ur.ucr_request.wValue, rio_cmd->value);
467         USETW(ur.ucr_request.wIndex, rio_cmd->index);
468         USETW(ur.ucr_request.wLength, rio_cmd->length);
469         ur.ucr_data = rio_cmd->buffer;
470
471         /* reuse generic USB code */
472         error = ugen_do_request(fifo, &ur);
473
474 done:
475         return (error);
476 }
477
478 static int
479 urio_detach(device_t dev)
480 {
481         struct urio_softc *sc = device_get_softc(dev);
482
483         DPRINTF("\n");
484
485         usb_fifo_detach(&sc->sc_fifo);
486
487         usbd_transfer_unsetup(sc->sc_xfer, URIO_T_MAX);
488
489         mtx_destroy(&sc->sc_mtx);
490
491         return (0);
492 }