Bug Summary

File:dev/usb/uticom.c
Warning:line 882, column 3
Value stored to 'error' is never read

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.4 -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name uticom.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model static -mframe-pointer=all -relaxed-aliasing -ffp-contract=on -fno-rounding-math -mconstructor-aliases -ffreestanding -mcmodel=kernel -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -target-feature -sse2 -target-feature -sse -target-feature -3dnow -target-feature -mmx -target-feature +save-args -target-feature +retpoline-external-thunk -disable-red-zone -no-implicit-float -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -nostdsysteminc -nobuiltininc -resource-dir /usr/local/llvm16/lib/clang/16 -I /usr/src/sys -I /usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -I /usr/src/sys/arch -I /usr/src/sys/dev/pci/drm/include -I /usr/src/sys/dev/pci/drm/include/uapi -I /usr/src/sys/dev/pci/drm/amd/include/asic_reg -I /usr/src/sys/dev/pci/drm/amd/include -I /usr/src/sys/dev/pci/drm/amd/amdgpu -I /usr/src/sys/dev/pci/drm/amd/display -I /usr/src/sys/dev/pci/drm/amd/display/include -I /usr/src/sys/dev/pci/drm/amd/display/dc -I /usr/src/sys/dev/pci/drm/amd/display/amdgpu_dm -I /usr/src/sys/dev/pci/drm/amd/pm/inc -I /usr/src/sys/dev/pci/drm/amd/pm/legacy-dpm -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/inc -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu11 -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu12 -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu13 -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/inc -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/hwmgr -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/smumgr -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/inc -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/inc/pmfw_if -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc/hw -I /usr/src/sys/dev/pci/drm/amd/display/dc/clk_mgr -I /usr/src/sys/dev/pci/drm/amd/display/modules/inc -I /usr/src/sys/dev/pci/drm/amd/display/modules/hdcp -I /usr/src/sys/dev/pci/drm/amd/display/dmub/inc -I /usr/src/sys/dev/pci/drm/i915 -D DDB -D DIAGNOSTIC -D KTRACE -D ACCOUNTING -D KMEMSTATS -D PTRACE -D POOL_DEBUG -D CRYPTO -D SYSVMSG -D SYSVSEM -D SYSVSHM -D UVM_SWAP_ENCRYPT -D FFS -D FFS2 -D FFS_SOFTUPDATES -D UFS_DIRHASH -D QUOTA -D EXT2FS -D MFS -D NFSCLIENT -D NFSSERVER -D CD9660 -D UDF -D MSDOSFS -D FIFO -D FUSE -D SOCKET_SPLICE -D TCP_ECN -D TCP_SIGNATURE -D INET6 -D IPSEC -D PPP_BSDCOMP -D PPP_DEFLATE -D PIPEX -D MROUTING -D MPLS -D BOOT_CONFIG -D USER_PCICONF -D APERTURE -D MTRR -D NTFS -D SUSPEND -D HIBERNATE -D PCIVERBOSE -D USBVERBOSE -D WSDISPLAY_COMPAT_USL -D WSDISPLAY_COMPAT_RAWKBD -D WSDISPLAY_DEFAULTSCREENS=6 -D X86EMU -D ONEWIREVERBOSE -D MULTIPROCESSOR -D MAXUSERS=80 -D _KERNEL -O2 -Wno-pointer-sign -Wno-address-of-packed-member -Wno-constant-conversion -Wno-unused-but-set-variable -Wno-gnu-folding-constant -fdebug-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fcf-protection=branch -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -o /home/ben/Projects/scan/2024-01-11-110808-61670-1 -x c /usr/src/sys/dev/usb/uticom.c
1/* $OpenBSD: uticom.c,v 1.35 2022/04/09 20:07:44 naddy Exp $ */
2/*
3 * Copyright (c) 2005 Dmitry Komissaroff <dxi@mail.ru>.
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
18 * FOR 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
27#include <sys/param.h>
28#include <sys/systm.h>
29#include <sys/kernel.h>
30#include <sys/device.h>
31#include <sys/malloc.h>
32#include <sys/conf.h>
33#include <sys/tty.h>
34
35#include <machine/bus.h>
36
37#include <dev/usb/usb.h>
38#include <dev/usb/usbdi.h>
39#include <dev/usb/usbdivar.h>
40#include <dev/usb/usbdi_util.h>
41#include <dev/usb/usbdevs.h>
42#include <dev/usb/usbcdc.h>
43
44#include <dev/usb/ucomvar.h>
45
46#ifdef UTICOM_DEBUG
47static int uticomdebug = 0;
48#define DPRINTFN(n, x) do { if (uticomdebug > (n)) printf x; } while (0)
49#else
50#define DPRINTFN(n, x)
51#endif
52
53#define DPRINTF(x) DPRINTFN(0, x)
54
55#define UTICOM_CONFIG_INDEX1 1
56#define UTICOM_ACTIVE_INDEX2 2
57
58#define UTICOM_IFACE_INDEX0 0
59
60/*
61 * These are the maximum number of bytes transferred per frame.
62 * The output buffer size cannot be increased due to the size encoding.
63 */
64#define UTICOM_IBUFSZ64 64
65#define UTICOM_OBUFSZ64 64
66
67#define UTICOM_FW_BUFSZ16284 16284
68
69#define UTICOM_INTR_INTERVAL100 100 /* ms */
70
71#define UTICOM_RQ_LINE0 0
72/* Used to sync data0/1-toggle on reopen bulk pipe. */
73#define UTICOM_RQ_SOF1 1
74#define UTICOM_RQ_SON2 2
75
76#define UTICOM_RQ_BAUD3 3
77#define UTICOM_RQ_LCR4 4
78#define UTICOM_RQ_FCR5 5
79#define UTICOM_RQ_RTS6 6
80#define UTICOM_RQ_DTR7 7
81#define UTICOM_RQ_BREAK8 8
82#define UTICOM_RQ_CRTSCTS9 9
83
84#define UTICOM_BRATE_REF923077 923077
85
86#define UTICOM_SET_DATA_BITS(x)(x - 5) (x - 5)
87
88#define UTICOM_STOP_BITS_10x00 0x00
89#define UTICOM_STOP_BITS_20x40 0x40
90
91#define UTICOM_PARITY_NONE0x00 0x00
92#define UTICOM_PARITY_ODD0x08 0x08
93#define UTICOM_PARITY_EVEN0x18 0x18
94
95#define UTICOM_LCR_OVR0x1 0x1
96#define UTICOM_LCR_PTE0x2 0x2
97#define UTICOM_LCR_FRE0x4 0x4
98#define UTICOM_LCR_BRK0x8 0x8
99
100#define UTICOM_MCR_CTS0x1 0x1
101#define UTICOM_MCR_DSR0x2 0x2
102#define UTICOM_MCR_CD0x4 0x4
103#define UTICOM_MCR_RI0x8 0x8
104
105/* Structures */
106struct uticom_fw_header {
107 uint16_t length;
108 uint8_t checkSum;
109} __packed__attribute__((__packed__));
110
111struct uticom_buf {
112 unsigned int buf_size;
113 char *buf_buf;
114 char *buf_get;
115 char *buf_put;
116};
117
118struct uticom_softc {
119 struct device sc_dev; /* base device */
120 struct usbd_device *sc_udev; /* device */
121 struct usbd_interface *sc_iface; /* interface */
122
123 struct usbd_interface *sc_intr_iface; /* interrupt interface */
124 int sc_intr_number; /* interrupt number */
125 struct usbd_pipe *sc_intr_pipe; /* interrupt pipe */
126 u_char *sc_intr_buf; /* interrupt buffer */
127 int sc_isize;
128
129 u_char sc_dtr; /* current DTR state */
130 u_char sc_rts; /* current RTS state */
131 u_char sc_status;
132
133 u_char sc_lsr; /* Local status register */
134 u_char sc_msr; /* uticom status register */
135
136 struct device *sc_subdev;
137};
138
139static usbd_status uticom_reset(struct uticom_softc *);
140static usbd_status uticom_set_crtscts(struct uticom_softc *);
141static void uticom_intr(struct usbd_xfer *, void *, usbd_status);
142
143static void uticom_set(void *, int, int, int);
144static void uticom_dtr(struct uticom_softc *, int);
145static void uticom_rts(struct uticom_softc *, int);
146static void uticom_break(struct uticom_softc *, int);
147static void uticom_get_status(void *, int, u_char *, u_char *);
148static int uticom_param(void *, int, struct termios *);
149static int uticom_open(void *, int);
150static void uticom_close(void *, int);
151
152void uticom_attach_hook(struct device *);
153
154static int uticom_download_fw(struct uticom_softc *sc, int pipeno,
155 struct usbd_device *dev);
156
157const struct ucom_methods uticom_methods = {
158 uticom_get_status,
159 uticom_set,
160 uticom_param,
161 NULL((void *)0),
162 uticom_open,
163 uticom_close,
164 NULL((void *)0),
165 NULL((void *)0)
166};
167
168int uticom_match(struct device *, void *, void *);
169void uticom_attach(struct device *, struct device *, void *);
170int uticom_detach(struct device *, int);
171
172struct cfdriver uticom_cd = {
173 NULL((void *)0), "uticom", DV_DULL
174};
175
176const struct cfattach uticom_ca = {
177 sizeof(struct uticom_softc), uticom_match, uticom_attach, uticom_detach
178};
179
180static const struct usb_devno uticom_devs[] = {
181 { USB_VENDOR_TI0x0451, USB_PRODUCT_TI_TUSB34100x3410 },
182 { USB_VENDOR_TI0x0451, USB_PRODUCT_TI_MSP430_JTAG0xf430 },
183 { USB_VENDOR_STARTECH0x14b0, USB_PRODUCT_STARTECH_ICUSB232X0x3410 },
184 { USB_VENDOR_MOXA0x110a, USB_PRODUCT_MOXA_UPORT11100x1110 },
185 { USB_VENDOR_ABBOTT0x1a61, USB_PRODUCT_ABBOTT_STEREO_PLUG0x3410 }
186};
187
188int
189uticom_match(struct device *parent, void *match, void *aux)
190{
191 struct usb_attach_arg *uaa = aux;
192
193 if (uaa->iface != NULL((void *)0))
194 return (UMATCH_NONE0);
195
196 return (usb_lookup(uticom_devs, uaa->vendor, uaa->product)usbd_match_device((const struct usb_devno *)(uticom_devs), sizeof
(uticom_devs) / sizeof ((uticom_devs)[0]), sizeof ((uticom_devs
)[0]), (uaa->vendor), (uaa->product)) != NULL((void *)0) ?
197 UMATCH_VENDOR_PRODUCT13 : UMATCH_NONE0);
198}
199
200void
201uticom_attach(struct device *parent, struct device *self, void *aux)
202{
203 struct uticom_softc *sc = (struct uticom_softc *)self;
204 struct usb_attach_arg *uaa = aux;
205 struct usbd_device *dev = uaa->device;
206
207 sc->sc_udev = dev;
208 sc->sc_iface = uaa->iface;
209
210 config_mountroot(self, uticom_attach_hook);
211}
212
213void
214uticom_attach_hook(struct device *self)
215{
216 struct uticom_softc *sc = (struct uticom_softc *)self;
217 usb_config_descriptor_t *cdesc;
218 usb_interface_descriptor_t *id;
219 usb_endpoint_descriptor_t *ed;
220 usbd_status err;
221 int status, i;
222 usb_device_descriptor_t *dd;
223 struct ucom_attach_args uca;
224
225 /* Initialize endpoints. */
226 uca.bulkin = uca.bulkout = -1;
227 sc->sc_intr_number = -1;
228 sc->sc_intr_pipe = NULL((void *)0);
229
230 dd = usbd_get_device_descriptor(sc->sc_udev);
231 DPRINTF(("%s: uticom_attach: num of configurations %d\n",
232 sc->sc_dev.dv_xname, dd->bNumConfigurations));
233
234 /* The device without firmware has single configuration with single
235 * bulk out interface. */
236 if (dd->bNumConfigurations > 1)
237 goto fwload_done;
238
239 /* Loading firmware. */
240 DPRINTF(("%s: uticom_attach: starting loading firmware\n",
241 sc->sc_dev.dv_xname));
242
243 err = usbd_set_config_index(sc->sc_udev, UTICOM_CONFIG_INDEX1, 1);
244 if (err) {
245 printf("%s: failed to set configuration: %s\n",
246 sc->sc_dev.dv_xname, usbd_errstr(err));
247 usbd_deactivate(sc->sc_udev);
248 return;
249 }
250
251 /* Get the config descriptor. */
252 cdesc = usbd_get_config_descriptor(sc->sc_udev);
253
254 if (cdesc == NULL((void *)0)) {
255 printf("%s: failed to get configuration descriptor\n",
256 sc->sc_dev.dv_xname);
257 usbd_deactivate(sc->sc_udev);
258 return;
259 }
260
261 err = usbd_device2interface_handle(sc->sc_udev, UTICOM_IFACE_INDEX0,
262 &sc->sc_iface);
263 if (err) {
264 printf("%s: failed to get interface: %s\n",
265 sc->sc_dev.dv_xname, usbd_errstr(err));
266 usbd_deactivate(sc->sc_udev);
267 return;
268 }
269
270 /* Find the bulk out interface used to upload firmware. */
271 id = usbd_get_interface_descriptor(sc->sc_iface);
272
273 for (i = 0; i < id->bNumEndpoints; i++) {
274 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
275 if (ed == NULL((void *)0)) {
276 printf("%s: no endpoint descriptor for %d\n",
277 sc->sc_dev.dv_xname, i);
278 usbd_deactivate(sc->sc_udev);
279 return;
280 }
281
282 if (UE_GET_DIR(ed->bEndpointAddress)((ed->bEndpointAddress) & 0x80) == UE_DIR_OUT0x00 &&
283 UE_GET_XFERTYPE(ed->bmAttributes)((ed->bmAttributes) & 0x03) == UE_BULK0x02) {
284 uca.bulkout = ed->bEndpointAddress;
285 DPRINTF(("%s: uticom_attach: data bulk out num: %d\n",
286 sc->sc_dev.dv_xname, ed->bEndpointAddress));
287 }
288
289 if (uca.bulkout == -1) {
290 printf("%s: could not find data bulk out\n",
291 sc->sc_dev.dv_xname);
292 usbd_deactivate(sc->sc_udev);
293 return;
294 }
295 }
296
297 status = uticom_download_fw(sc, uca.bulkout, sc->sc_udev);
298
299 if (status) {
300 printf("%s: firmware download failed\n",
301 sc->sc_dev.dv_xname);
302 usbd_deactivate(sc->sc_udev);
303 return;
304 } else {
305 DPRINTF(("%s: firmware download succeeded\n",
306 sc->sc_dev.dv_xname));
307 }
308
309 status = usbd_reload_device_desc(sc->sc_udev);
310 if (status) {
311 printf("%s: error reloading device descriptor\n",
312 sc->sc_dev.dv_xname);
313 usbd_deactivate(sc->sc_udev);
314 return;
315 }
316
317fwload_done:
318 dd = usbd_get_device_descriptor(sc->sc_udev);
319 DPRINTF(("%s: uticom_attach: num of configurations %d\n",
320 sc->sc_dev.dv_xname, dd->bNumConfigurations));
321
322 err = usbd_set_config_index(sc->sc_udev, UTICOM_ACTIVE_INDEX2, 1);
323 if (err) {
324 printf("%s: failed to set configuration: %s\n",
325 sc->sc_dev.dv_xname, usbd_errstr(err));
326 usbd_deactivate(sc->sc_udev);
327 return;
328 }
329
330 /* Get the config descriptor. */
331 cdesc = usbd_get_config_descriptor(sc->sc_udev);
332 if (cdesc == NULL((void *)0)) {
333 printf("%s: failed to get configuration descriptor\n",
334 sc->sc_dev.dv_xname);
335 usbd_deactivate(sc->sc_udev);
336 return;
337 }
338
339 /* Get the interface (XXX: multiport chips are not supported yet). */
340 err = usbd_device2interface_handle(sc->sc_udev, UTICOM_IFACE_INDEX0,
341 &sc->sc_iface);
342 if (err) {
343 printf("%s: failed to get interface: %s\n",
344 sc->sc_dev.dv_xname, usbd_errstr(err));
345 usbd_deactivate(sc->sc_udev);
346 return;
347 }
348
349 /* Find the interrupt endpoints. */
350 id = usbd_get_interface_descriptor(sc->sc_iface);
351
352 for (i = 0; i < id->bNumEndpoints; i++) {
353 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
354 if (ed == NULL((void *)0)) {
355 printf("%s: no endpoint descriptor for %d\n",
356 sc->sc_dev.dv_xname, i);
357 usbd_deactivate(sc->sc_udev);
358 return;
359 }
360
361 if (UE_GET_DIR(ed->bEndpointAddress)((ed->bEndpointAddress) & 0x80) == UE_DIR_IN0x80 &&
362 UE_GET_XFERTYPE(ed->bmAttributes)((ed->bmAttributes) & 0x03) == UE_INTERRUPT0x03) {
363 sc->sc_intr_number = ed->bEndpointAddress;
364 sc->sc_isize = UGETW(ed->wMaxPacketSize)(*(u_int16_t *)(ed->wMaxPacketSize));
365
366 }
367 }
368
369 if (sc->sc_intr_number == -1) {
370 printf("%s: could not find interrupt in\n",
371 sc->sc_dev.dv_xname);
372 usbd_deactivate(sc->sc_udev);
373 return;
374 }
375
376 /* Keep interface for interrupt. */
377 sc->sc_intr_iface = sc->sc_iface;
378
379 /* Find the bulk{in,out} endpoints. */
380 id = usbd_get_interface_descriptor(sc->sc_iface);
381
382 for (i = 0; i < id->bNumEndpoints; i++) {
383 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
384 if (ed == NULL((void *)0)) {
385 printf("%s: no endpoint descriptor for %d\n",
386 sc->sc_dev.dv_xname, i);
387 usbd_deactivate(sc->sc_udev);
388 return;
389 }
390
391 if (UE_GET_DIR(ed->bEndpointAddress)((ed->bEndpointAddress) & 0x80) == UE_DIR_IN0x80 &&
392 UE_GET_XFERTYPE(ed->bmAttributes)((ed->bmAttributes) & 0x03) == UE_BULK0x02) {
393 uca.bulkin = ed->bEndpointAddress;
394 } else if (UE_GET_DIR(ed->bEndpointAddress)((ed->bEndpointAddress) & 0x80) == UE_DIR_OUT0x00 &&
395 UE_GET_XFERTYPE(ed->bmAttributes)((ed->bmAttributes) & 0x03) == UE_BULK0x02) {
396 uca.bulkout = ed->bEndpointAddress;
397 }
398 }
399
400 if (uca.bulkin == -1) {
401 printf("%s: could not find data bulk in\n",
402 sc->sc_dev.dv_xname);
403 usbd_deactivate(sc->sc_udev);
404 return;
405 }
406
407 if (uca.bulkout == -1) {
408 printf("%s: could not find data bulk out\n",
409 sc->sc_dev.dv_xname);
410 usbd_deactivate(sc->sc_udev);
411 return;
412 }
413
414 sc->sc_dtr = sc->sc_rts = -1;
415
416 uca.portno = UCOM_UNK_PORTNO-1;
417 uca.ibufsize = UTICOM_IBUFSZ64;
418 uca.obufsize = UTICOM_OBUFSZ64;
419 uca.ibufsizepad = UTICOM_IBUFSZ64;
420 uca.device = sc->sc_udev;
421 uca.iface = sc->sc_iface;
422 uca.opkthdrlen = 0;
423 uca.methods = &uticom_methods;
424 uca.arg = sc;
425 uca.info = NULL((void *)0);
426
427 err = uticom_reset(sc);
428 if (err) {
429 printf("%s: reset failed: %s\n",
430 sc->sc_dev.dv_xname, usbd_errstr(err));
431 usbd_deactivate(sc->sc_udev);
432 return;
433 }
434
435 DPRINTF(("%s: uticom_attach: in = 0x%x, out = 0x%x, intr = 0x%x\n",
436 sc->sc_dev.dv_xname, uca.bulkin,
437 uca.bulkout, sc->sc_intr_number));
438
439 sc->sc_subdev = config_found_sm((struct device *)sc, &uca, ucomprint, ucomsubmatch);
440}
441
442int
443uticom_detach(struct device *self, int flags)
444{
445 struct uticom_softc *sc = (struct uticom_softc *)self;
446
447 DPRINTF(("%s: uticom_detach: sc = %p\n",
448 sc->sc_dev.dv_xname, sc));
449
450 if (sc->sc_subdev != NULL((void *)0)) {
451 config_detach(sc->sc_subdev, flags);
452 sc->sc_subdev = NULL((void *)0);
453 }
454
455 if (sc->sc_intr_pipe != NULL((void *)0)) {
456 usbd_close_pipe(sc->sc_intr_pipe);
457 free(sc->sc_intr_buf, M_USBDEV102, sc->sc_isize);
458 sc->sc_intr_pipe = NULL((void *)0);
459 }
460
461 return (0);
462}
463
464static usbd_status
465uticom_reset(struct uticom_softc *sc)
466{
467 usb_device_request_t req;
468 usbd_status err;
469
470 req.bmRequestType = UT_WRITE_VENDOR_DEVICE(0x00 | 0x40 | 0x00);
471 req.bRequest = UTICOM_RQ_SON2;
472 USETW(req.wValue, 0)(*(u_int16_t *)(req.wValue) = (0));
473 USETW(req.wIndex, 0)(*(u_int16_t *)(req.wIndex) = (0));
474 USETW(req.wLength, 0)(*(u_int16_t *)(req.wLength) = (0));
475
476 err = usbd_do_request(sc->sc_udev, &req, NULL((void *)0));
477 if (err){
478 printf("%s: uticom_reset: %s\n",
479 sc->sc_dev.dv_xname, usbd_errstr(err));
480 return (EIO5);
481 }
482
483 DPRINTF(("%s: uticom_reset: done\n", sc->sc_dev.dv_xname));
484 return (0);
485}
486
487static void
488uticom_set(void *addr, int portno, int reg, int onoff)
489{
490 struct uticom_softc *sc = addr;
491
492 switch (reg) {
493 case UCOM_SET_DTR1:
494 uticom_dtr(sc, onoff);
495 break;
496 case UCOM_SET_RTS2:
497 uticom_rts(sc, onoff);
498 break;
499 case UCOM_SET_BREAK3:
500 uticom_break(sc, onoff);
501 break;
502 default:
503 break;
504 }
505}
506
507static void
508uticom_dtr(struct uticom_softc *sc, int onoff)
509{
510 usb_device_request_t req;
511 usbd_status err;
512
513 DPRINTF(("%s: uticom_dtr: onoff = %d\n", sc->sc_dev.dv_xname,
514 onoff));
515
516 if (sc->sc_dtr == onoff)
517 return;
518 sc->sc_dtr = onoff;
519
520 req.bmRequestType = UT_WRITE_VENDOR_DEVICE(0x00 | 0x40 | 0x00);
521 req.bRequest = UTICOM_RQ_DTR7;
522 USETW(req.wValue, sc->sc_dtr ? UCDC_LINE_DTR : 0)(*(u_int16_t *)(req.wValue) = (sc->sc_dtr ? 0x0001 : 0));
523 USETW(req.wIndex, 0)(*(u_int16_t *)(req.wIndex) = (0));
524 USETW(req.wLength, 0)(*(u_int16_t *)(req.wLength) = (0));
525
526 err = usbd_do_request(sc->sc_udev, &req, NULL((void *)0));
527 if (err)
528 printf("%s: uticom_dtr: %s\n",
529 sc->sc_dev.dv_xname, usbd_errstr(err));
530}
531
532static void
533uticom_rts(struct uticom_softc *sc, int onoff)
534{
535 usb_device_request_t req;
536 usbd_status err;
537
538 DPRINTF(("%s: uticom_rts: onoff = %d\n", sc->sc_dev.dv_xname,
539 onoff));
540
541 if (sc->sc_rts == onoff)
542 return;
543 sc->sc_rts = onoff;
544 req.bmRequestType = UT_WRITE_VENDOR_DEVICE(0x00 | 0x40 | 0x00);
545 req.bRequest = UTICOM_RQ_RTS6;
546 USETW(req.wValue, sc->sc_rts ? UCDC_LINE_RTS : 0)(*(u_int16_t *)(req.wValue) = (sc->sc_rts ? 0x0002 : 0));
547 USETW(req.wIndex, 0)(*(u_int16_t *)(req.wIndex) = (0));
548 USETW(req.wLength, 0)(*(u_int16_t *)(req.wLength) = (0));
549
550 err = usbd_do_request(sc->sc_udev, &req, NULL((void *)0));
551 if (err)
552 printf("%s: uticom_rts: %s\n",
553 sc->sc_dev.dv_xname, usbd_errstr(err));
554}
555
556static void
557uticom_break(struct uticom_softc *sc, int onoff)
558{
559 usb_device_request_t req;
560 usbd_status err;
561
562 DPRINTF(("%s: uticom_break: onoff = %d\n", sc->sc_dev.dv_xname,
563 onoff));
564
565 req.bmRequestType = UT_WRITE_VENDOR_DEVICE(0x00 | 0x40 | 0x00);
566 req.bRequest = UTICOM_RQ_BREAK8;
567 USETW(req.wValue, onoff ? 1 : 0)(*(u_int16_t *)(req.wValue) = (onoff ? 1 : 0));
568 USETW(req.wIndex, 0)(*(u_int16_t *)(req.wIndex) = (0));
569 USETW(req.wLength, 0)(*(u_int16_t *)(req.wLength) = (0));
570
571 err = usbd_do_request(sc->sc_udev, &req, NULL((void *)0));
572 if (err)
573 printf("%s: uticom_break: %s\n",
574 sc->sc_dev.dv_xname, usbd_errstr(err));
575}
576
577static usbd_status
578uticom_set_crtscts(struct uticom_softc *sc)
579{
580 usb_device_request_t req;
581 usbd_status err;
582
583 DPRINTF(("%s: uticom_set_crtscts: on\n", sc->sc_dev.dv_xname));
584
585 req.bmRequestType = UT_WRITE_VENDOR_DEVICE(0x00 | 0x40 | 0x00);
586 req.bRequest = UTICOM_RQ_CRTSCTS9;
587 USETW(req.wValue, 1)(*(u_int16_t *)(req.wValue) = (1));
588 USETW(req.wIndex, 0)(*(u_int16_t *)(req.wIndex) = (0));
589 USETW(req.wLength, 0)(*(u_int16_t *)(req.wLength) = (0));
590
591 err = usbd_do_request(sc->sc_udev, &req, NULL((void *)0));
592 if (err) {
593 printf("%s: uticom_set_crtscts: %s\n",
594 sc->sc_dev.dv_xname, usbd_errstr(err));
595 return (err);
596 }
597
598 return (USBD_NORMAL_COMPLETION);
599}
600
601static int
602uticom_param(void *vsc, int portno, struct termios *t)
603{
604 struct uticom_softc *sc = (struct uticom_softc *)vsc;
605 usb_device_request_t req;
606 usbd_status err;
607 uint8_t data;
608
609 DPRINTF(("%s: uticom_param\n", sc->sc_dev.dv_xname));
610
611 switch (t->c_ospeed) {
612 case 1200:
613 case 2400:
614 case 4800:
615 case 7200:
616 case 9600:
617 case 14400:
618 case 19200:
619 case 38400:
620 case 57600:
621 case 115200:
622 case 230400:
623 case 460800:
624 case 921600:
625 req.bmRequestType = UT_WRITE_VENDOR_DEVICE(0x00 | 0x40 | 0x00);
626 req.bRequest = UTICOM_RQ_BAUD3;
627 USETW(req.wValue, (UTICOM_BRATE_REF / t->c_ospeed))(*(u_int16_t *)(req.wValue) = ((923077 / t->c_ospeed)));
628 USETW(req.wIndex, 0)(*(u_int16_t *)(req.wIndex) = (0));
629 USETW(req.wLength, 0)(*(u_int16_t *)(req.wLength) = (0));
630
631 err = usbd_do_request(sc->sc_udev, &req, 0);
632 if (err) {
633 printf("%s: uticom_param: %s\n",
634 sc->sc_dev.dv_xname, usbd_errstr(err));
635 return (EIO5);
636 }
637 break;
638 default:
639 printf("%s: uticom_param: unsupported baud rate %d\n",
640 sc->sc_dev.dv_xname, t->c_ospeed);
641 return (EINVAL22);
642 }
643
644 switch (ISSET(t->c_cflag, CSIZE)((t->c_cflag) & (0x00000300))) {
645 case CS50x00000000:
646 data = UTICOM_SET_DATA_BITS(5)(5 - 5);
647 break;
648 case CS60x00000100:
649 data = UTICOM_SET_DATA_BITS(6)(6 - 5);
650 break;
651 case CS70x00000200:
652 data = UTICOM_SET_DATA_BITS(7)(7 - 5);
653 break;
654 case CS80x00000300:
655 data = UTICOM_SET_DATA_BITS(8)(8 - 5);
656 break;
657 default:
658 return (EIO5);
659 }
660
661 if (ISSET(t->c_cflag, CSTOPB)((t->c_cflag) & (0x00000400)))
662 data |= UTICOM_STOP_BITS_20x40;
663 else
664 data |= UTICOM_STOP_BITS_10x00;
665
666 if (ISSET(t->c_cflag, PARENB)((t->c_cflag) & (0x00001000))) {
667 if (ISSET(t->c_cflag, PARODD)((t->c_cflag) & (0x00002000)))
668 data |= UTICOM_PARITY_ODD0x08;
669 else
670 data |= UTICOM_PARITY_EVEN0x18;
671 } else
672 data |= UTICOM_PARITY_NONE0x00;
673
674 req.bmRequestType = UT_WRITE_VENDOR_DEVICE(0x00 | 0x40 | 0x00);
675 req.bRequest = UTICOM_RQ_LCR4;
676 USETW(req.wIndex, 0)(*(u_int16_t *)(req.wIndex) = (0));
677 USETW(req.wLength, 0)(*(u_int16_t *)(req.wLength) = (0));
678 USETW(req.wValue, data)(*(u_int16_t *)(req.wValue) = (data));
679
680 err = usbd_do_request(sc->sc_udev, &req, NULL((void *)0));
681 if (err) {
682 printf("%s: uticom_param: %s\n",
683 sc->sc_dev.dv_xname, usbd_errstr(err));
684 return (err);
685 }
686
687 if (ISSET(t->c_cflag, CRTSCTS)((t->c_cflag) & (0x00010000))) {
688 err = uticom_set_crtscts(sc);
689 if (err)
690 return (EIO5);
691 }
692
693 return (0);
694}
695
696static int
697uticom_open(void *addr, int portno)
698{
699 struct uticom_softc *sc = addr;
700 usbd_status err;
701
702 if (usbd_is_dying(sc->sc_udev))
703 return (ENXIO6);
704
705 DPRINTF(("%s: uticom_open\n", sc->sc_dev.dv_xname));
706
707 sc->sc_status = 0; /* clear status bit */
708
709 if (sc->sc_intr_number != -1 && sc->sc_intr_pipe == NULL((void *)0)) {
710 sc->sc_intr_buf = malloc(sc->sc_isize, M_USBDEV102, M_WAITOK0x0001);
711 err = usbd_open_pipe_intr(sc->sc_intr_iface, sc->sc_intr_number,
712 USBD_SHORT_XFER_OK0x04, &sc->sc_intr_pipe, sc, sc->sc_intr_buf,
713 sc->sc_isize, uticom_intr, UTICOM_INTR_INTERVAL100);
714 if (err) {
715 printf("%s: cannot open interrupt pipe (addr %d)\n",
716 sc->sc_dev.dv_xname, sc->sc_intr_number);
717 return (EIO5);
718 }
719 }
720
721 DPRINTF(("%s: uticom_open: port opened\n", sc->sc_dev.dv_xname));
722 return (0);
723}
724
725static void
726uticom_close(void *addr, int portno)
727{
728 struct uticom_softc *sc = addr;
729 usb_device_request_t req;
730 usbd_status err;
731
732 if (usbd_is_dying(sc->sc_udev))
733 return;
734
735 req.bmRequestType = UT_WRITE_VENDOR_DEVICE(0x00 | 0x40 | 0x00);
736 req.bRequest = UTICOM_RQ_SON2;
737 USETW(req.wValue, 0)(*(u_int16_t *)(req.wValue) = (0));
738 USETW(req.wIndex, 0)(*(u_int16_t *)(req.wIndex) = (0));
739 USETW(req.wLength, 0)(*(u_int16_t *)(req.wLength) = (0));
740
741 /* Try to reset UART part of chip. */
742 err = usbd_do_request(sc->sc_udev, &req, NULL((void *)0));
743 if (err) {
744 printf("%s: uticom_close: %s\n",
745 sc->sc_dev.dv_xname, usbd_errstr(err));
746 return;
747 }
748
749 DPRINTF(("%s: uticom_close: close\n", sc->sc_dev.dv_xname));
750
751 if (sc->sc_intr_pipe != NULL((void *)0)) {
752 err = usbd_close_pipe(sc->sc_intr_pipe);
753 if (err)
754 printf("%s: close interrupt pipe failed: %s\n",
755 sc->sc_dev.dv_xname, usbd_errstr(err));
756 free(sc->sc_intr_buf, M_USBDEV102, sc->sc_isize);
757 sc->sc_intr_pipe = NULL((void *)0);
758 }
759}
760
761static void
762uticom_intr(struct usbd_xfer *xfer, void *priv, usbd_status status)
763{
764 struct uticom_softc *sc = priv;
765 u_char *buf = sc->sc_intr_buf;
766
767 if (usbd_is_dying(sc->sc_udev))
768 return;
769
770 if (status != USBD_NORMAL_COMPLETION) {
771 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
772 DPRINTF(("%s: uticom_intr: int status: %s\n",
773 sc->sc_dev.dv_xname, usbd_errstr(status)));
774 return;
775 }
776
777 DPRINTF(("%s: uticom_intr: abnormal status: %s\n",
778 sc->sc_dev.dv_xname, usbd_errstr(status)));
779 usbd_clear_endpoint_stall_async(sc->sc_intr_pipe);
780 return;
781 }
782
783 if (!xfer->actlen)
784 return;
785
786 DPRINTF(("%s: xfer_length = %d\n", sc->sc_dev.dv_xname,
787 xfer->actlen));
788
789 sc->sc_lsr = sc->sc_msr = 0;
790
791 if (buf[0] == 0) {
792 /* msr registers */
793 if (buf[1] & UTICOM_MCR_CTS0x1)
794 sc->sc_msr |= UMSR_CTS0x10;
795 if (buf[1] & UTICOM_MCR_DSR0x2)
796 sc->sc_msr |= UMSR_DSR0x20;
797 if (buf[1] & UTICOM_MCR_CD0x4)
798 sc->sc_msr |= UMSR_DCD0x80;
799 if (buf[1] & UTICOM_MCR_RI0x8)
800 sc->sc_msr |= UMSR_RI0x40;
801 } else {
802 /* lsr registers */
803 if (buf[0] & UTICOM_LCR_OVR0x1)
804 sc->sc_lsr |= ULSR_OE0x02;
805 if (buf[0] & UTICOM_LCR_PTE0x2)
806 sc->sc_lsr |= ULSR_PE0x04;
807 if (buf[0] & UTICOM_LCR_FRE0x4)
808 sc->sc_lsr |= ULSR_FE0x08;
809 if (buf[0] & UTICOM_LCR_BRK0x8)
810 sc->sc_lsr |= ULSR_BI0x10;
811 }
812
813// if (uticomstickdsr)
814// sc->sc_msr |= UMSR_DSR;
815
816 ucom_status_change((struct ucom_softc *)sc->sc_subdev);
817}
818
819static void
820uticom_get_status(void *addr, int portno, u_char *lsr, u_char *msr)
821{
822#if 0 /* TODO */
823 struct uticom_softc *sc = addr;
824
825 DPRINTF(("uticom_get_status:\n"));
826
827 if (lsr != NULL((void *)0))
828 *lsr = sc->sc_lsr;
829 if (msr != NULL((void *)0))
830 *msr = sc->sc_msr;
831#endif
832 return;
833}
834
835static int
836uticom_download_fw(struct uticom_softc *sc, int pipeno,
837 struct usbd_device *dev)
838{
839 u_char *obuf, *firmware;
840 size_t firmware_size;
841 int buffer_size, pos;
842 uint8_t cs = 0, *buffer;
843 usbd_status err;
844 struct uticom_fw_header *header;
845 struct usbd_xfer *oxfer = 0;
846 usbd_status error = 0;
847 struct usbd_pipe *pipe;
848
849 error = loadfirmware("tusb3410", &firmware, &firmware_size);
850 if (error)
851 return (error);
852
853 buffer_size = UTICOM_FW_BUFSZ16284 + sizeof(struct uticom_fw_header);
854 buffer = malloc(buffer_size, M_USBDEV102, M_WAITOK0x0001 | M_CANFAIL0x0004);
855
856 if (!buffer) {
857 printf("%s: uticom_download_fw: out of memory\n",
858 sc->sc_dev.dv_xname);
859 free(firmware, M_DEVBUF2, firmware_size);
860 return ENOMEM12;
861 }
862
863 memcpy(buffer, firmware, firmware_size)__builtin_memcpy((buffer), (firmware), (firmware_size));
864 memset(buffer + firmware_size, 0xff, buffer_size - firmware_size)__builtin_memset((buffer + firmware_size), (0xff), (buffer_size
- firmware_size));
865
866 for (pos = sizeof(struct uticom_fw_header); pos < buffer_size; pos++)
867 cs = (uint8_t)(cs + buffer[pos]);
868
869 header = (struct uticom_fw_header*)buffer;
870 header->length = (uint16_t)(buffer_size -
871 sizeof(struct uticom_fw_header));
872 header->checkSum = cs;
873
874 DPRINTF(("%s: downloading firmware ...\n",
875 sc->sc_dev.dv_xname));
876
877 err = usbd_open_pipe(sc->sc_iface, pipeno, USBD_EXCLUSIVE_USE0x01,
878 &pipe);
879 if (err) {
880 printf("%s: open bulk out error (addr %d): %s\n",
881 sc->sc_dev.dv_xname, pipeno, usbd_errstr(err));
882 error = EIO5;
Value stored to 'error' is never read
883 goto finish;
884 }
885
886 oxfer = usbd_alloc_xfer(dev);
887 if (oxfer == NULL((void *)0)) {
888 error = ENOMEM12;
889 goto finish;
890 }
891
892 obuf = usbd_alloc_buffer(oxfer, buffer_size);
893 if (obuf == NULL((void *)0)) {
894 error = ENOMEM12;
895 goto finish;
896 }
897
898 memcpy(obuf, buffer, buffer_size)__builtin_memcpy((obuf), (buffer), (buffer_size));
899
900 usbd_setup_xfer(oxfer, pipe, (void *)sc, obuf, buffer_size,
901 USBD_NO_COPY0x01 | USBD_SYNCHRONOUS0x02, USBD_NO_TIMEOUT0, 0);
902 err = usbd_transfer(oxfer);
903
904 if (err != USBD_NORMAL_COMPLETION)
905 printf("%s: uticom_download_fw: error: %s\n",
906 sc->sc_dev.dv_xname, usbd_errstr(err));
907
908finish:
909 free(firmware, M_DEVBUF2, firmware_size);
910 usbd_free_buffer(oxfer);
911 usbd_free_xfer(oxfer);
912 oxfer = NULL((void *)0);
913 usbd_close_pipe(pipe);
914 free(buffer, M_USBDEV102, buffer_size);
915 return err;
916}