Annotation of src/sys/dev/usb/umcs.c, Revision 1.15.10.2
1.15.10.2! thorpej 1: /* $NetBSD: umcs.c,v 1.15.10.1 2021/03/22 02:01:02 thorpej Exp $ */
1.1 martin 2: /* $FreeBSD: head/sys/dev/usb/serial/umcs.c 260559 2014-01-12 11:44:28Z hselasky $ */
3:
4: /*-
5: * Copyright (c) 2010 Lev Serebryakov <lev@FreeBSD.org>.
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: */
29:
30: /*
31: * This driver supports several multiport USB-to-RS232 serial adapters driven
32: * by MosChip mos7820 and mos7840, bridge chips.
33: * The adapters are sold under many different brand names.
34: *
35: * Datasheets are available at MosChip www site at
36: * http://www.moschip.com. The datasheets don't contain full
37: * programming information for the chip.
38: *
39: * It is nornal to have only two enabled ports in devices, based on
40: * quad-port mos7840.
41: *
42: */
43: #include <sys/cdefs.h>
1.15.10.2! thorpej 44: __KERNEL_RCSID(0, "$NetBSD: umcs.c,v 1.15.10.1 2021/03/22 02:01:02 thorpej Exp $");
1.1 martin 45:
46: #include <sys/param.h>
47: #include <sys/systm.h>
48: #include <sys/atomic.h>
49: #include <sys/kernel.h>
50: #include <sys/conf.h>
51: #include <sys/tty.h>
52: #include <sys/device.h>
1.3 martin 53: #include <sys/kmem.h>
1.1 martin 54:
55: #include <dev/usb/usb.h>
56: #include <dev/usb/usbdi.h>
57: #include <dev/usb/usbdi_util.h>
58: #include <dev/usb/usbdevs.h>
59:
60: #include <dev/usb/usbdevs.h>
61: #include <dev/usb/ucomvar.h>
62:
63: #include "umcs.h"
64:
65: #if 0
66: #define DPRINTF(ARG) printf ARG
67: #else
68: #define DPRINTF(ARG)
69: #endif
70:
71: /*
72: * Two-port devices (both with 7820 chip and 7840 chip configured as two-port)
73: * have ports 0 and 2, with ports 1 and 3 omitted.
74: * So, PHYSICAL port numbers on two-port device will be 0 and 2.
75: *
76: * We use an array of the following struct, indexed by ucom port index,
77: * and include the physical port number in it.
78: */
79: struct umcs7840_softc_oneport {
80: device_t sc_port_ucom; /* ucom subdevice */
81: unsigned int sc_port_phys; /* physical port number */
82: uint8_t sc_port_lcr; /* local line control register */
83: uint8_t sc_port_mcr; /* local modem control register */
84: };
85:
86: struct umcs7840_softc {
87: device_t sc_dev; /* ourself */
1.14 maxv 88: enum {
89: UMCS_INIT_NONE,
90: UMCS_INIT_INITED
91: } sc_init_state;
1.9 skrll 92: struct usbd_interface *sc_iface; /* the usb interface */
93: struct usbd_device *sc_udev; /* the usb device */
94: struct usbd_pipe *sc_intr_pipe; /* interrupt pipe */
1.1 martin 95: uint8_t *sc_intr_buf; /* buffer for interrupt xfer */
1.3 martin 96: unsigned int sc_intr_buflen; /* size of buffer */
1.5 martin 97: struct usb_task sc_change_task; /* async status changes */
1.6 riastrad 98: volatile uint32_t sc_change_mask; /* mask of port changes */
1.1 martin 99: struct umcs7840_softc_oneport sc_ports[UMCS7840_MAX_PORTS];
100: /* data for each port */
101: uint8_t sc_numports; /* number of ports (subunits) */
102: bool sc_init_done; /* special one time init in open */
103: bool sc_dying; /* we have been deactivated */
104: };
105:
1.9 skrll 106: static int umcs7840_get_reg(struct umcs7840_softc *, uint8_t, uint8_t *);
107: static int umcs7840_set_reg(struct umcs7840_softc *, uint8_t, uint8_t);
108: static int umcs7840_get_UART_reg(struct umcs7840_softc *, uint8_t, uint8_t, uint8_t *);
109: static int umcs7840_set_UART_reg(struct umcs7840_softc *, uint8_t, uint8_t, uint8_t );
110: static int umcs7840_calc_baudrate(uint32_t, uint16_t *, uint8_t *);
111: static void umcs7840_dtr(struct umcs7840_softc *, int, bool);
112: static void umcs7840_rts(struct umcs7840_softc *, int, bool);
113: static void umcs7840_break(struct umcs7840_softc *, int, bool );
1.1 martin 114:
115: static int umcs7840_match(device_t, cfdata_t, void *);
116: static void umcs7840_attach(device_t, device_t, void *);
117: static int umcs7840_detach(device_t, int);
1.9 skrll 118: static void umcs7840_intr(struct usbd_xfer *, void *, usbd_status);
1.5 martin 119: static void umcs7840_change_task(void *arg);
1.1 martin 120: static void umcs7840_childdet(device_t, device_t);
121:
122: static void umcs7840_get_status(void *, int, u_char *, u_char *);
123: static void umcs7840_set(void *, int, int, int);
124: static int umcs7840_param(void *, int, struct termios *);
1.9 skrll 125: static int umcs7840_port_open(void *, int);
126: static void umcs7840_port_close(void *, int);
1.1 martin 127:
1.15 maxv 128: static const struct ucom_methods umcs7840_methods = {
1.2 martin 129: .ucom_get_status = umcs7840_get_status,
130: .ucom_set = umcs7840_set,
131: .ucom_param = umcs7840_param,
132: .ucom_open = umcs7840_port_open,
133: .ucom_close = umcs7840_port_close,
1.1 martin 134: };
135:
136: static const struct usb_devno umcs7840_devs[] = {
137: { USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7703 },
138: { USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7810 },
139: { USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7820 },
140: { USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7840 },
141: { USB_VENDOR_ATEN, USB_PRODUCT_ATEN_UC2324 }
142: };
143: #define umcs7840_lookup(v, p) usb_lookup(umcs7840_devs, v, p)
144:
145: CFATTACH_DECL2_NEW(umcs, sizeof(struct umcs7840_softc), umcs7840_match,
1.13 mrg 146: umcs7840_attach, umcs7840_detach, NULL, NULL,
1.1 martin 147: umcs7840_childdet);
148:
149: static inline int
150: umcs7840_reg_sp(int phyport)
151: {
152: KASSERT(phyport >= 0 && phyport < 4);
153: switch (phyport) {
154: default:
155: case 0: return MCS7840_DEV_REG_SP1;
156: case 1: return MCS7840_DEV_REG_SP2;
157: case 2: return MCS7840_DEV_REG_SP3;
158: case 3: return MCS7840_DEV_REG_SP4;
159: }
160: }
161:
162: static inline int
163: umcs7840_reg_ctrl(int phyport)
164: {
165: KASSERT(phyport >= 0 && phyport < 4);
166: switch (phyport) {
167: default:
168: case 0: return MCS7840_DEV_REG_CONTROL1;
169: case 1: return MCS7840_DEV_REG_CONTROL2;
170: case 2: return MCS7840_DEV_REG_CONTROL3;
171: case 3: return MCS7840_DEV_REG_CONTROL4;
172: }
173: }
174:
175: static int
176: umcs7840_match(device_t dev, cfdata_t match, void *aux)
177: {
178: struct usb_attach_arg *uaa = aux;
179:
1.9 skrll 180: return umcs7840_lookup(uaa->uaa_vendor, uaa->uaa_product) != NULL ?
181: UMATCH_VENDOR_PRODUCT : UMATCH_NONE;
1.1 martin 182: }
183:
184: static void
1.9 skrll 185: umcs7840_attach(device_t parent, device_t self, void *aux)
1.1 martin 186: {
187: struct umcs7840_softc *sc = device_private(self);
188: struct usb_attach_arg *uaa = aux;
1.9 skrll 189: struct usbd_device *dev = uaa->uaa_device;
1.1 martin 190: usb_interface_descriptor_t *id;
191: usb_endpoint_descriptor_t *ed;
192: char *devinfop;
1.9 skrll 193: struct ucom_attach_args ucaa;
1.1 martin 194: int error, i, intr_addr;
195: uint8_t data;
196:
197: sc->sc_dev = self;
1.9 skrll 198: sc->sc_udev = uaa->uaa_device;
1.13 mrg 199: sc->sc_dying = false;
1.14 maxv 200: sc->sc_init_state = UMCS_INIT_NONE;
1.1 martin 201:
202: if (usbd_set_config_index(sc->sc_udev, MCS7840_CONFIG_INDEX, 1) != 0) {
203: aprint_error(": could not set configuration no\n");
1.13 mrg 204: sc->sc_dying = true;
1.1 martin 205: return;
206: }
207:
208: /* get the first interface handle */
209: error = usbd_device2interface_handle(sc->sc_udev, MCS7840_IFACE_INDEX,
210: &sc->sc_iface);
211: if (error != 0) {
212: aprint_error(": could not get interface handle\n");
1.13 mrg 213: sc->sc_dying = true;
1.1 martin 214: return;
215: }
216:
217: /*
218: * Get number of ports
219: * Documentation (full datasheet) says, that number of ports is
220: * set as MCS7840_DEV_MODE_SELECT24S bit in MODE R/Only
221: * register. But vendor driver uses these undocumented
222: * register & bit.
223: *
224: * Experiments show, that MODE register can have `0'
225: * (4 ports) bit on 2-port device, so use vendor driver's way.
226: *
227: * Also, see notes in header file for these constants.
228: */
229: umcs7840_get_reg(sc, MCS7840_DEV_REG_GPIO, &data);
230: if (data & MCS7840_DEV_GPIO_4PORTS) {
231: sc->sc_numports = 4;
232: /* physical port no are : 0, 1, 2, 3 */
233: } else {
1.9 skrll 234: if (uaa->uaa_product == USB_PRODUCT_MOSCHIP_MCS7810)
1.1 martin 235: sc->sc_numports = 1;
236: else {
237: sc->sc_numports = 2;
238: /* physical port no are : 0 and 2 */
239: }
240: }
241: devinfop = usbd_devinfo_alloc(dev, 0);
242: aprint_normal(": %s\n", devinfop);
243: usbd_devinfo_free(devinfop);
244: aprint_verbose_dev(self, "found %d active ports\n", sc->sc_numports);
245:
246: if (!umcs7840_get_reg(sc, MCS7840_DEV_REG_MODE, &data)) {
247: aprint_verbose_dev(self, "On-die confguration: RST: active %s, "
248: "HRD: %s, PLL: %s, POR: %s, Ports: %s, EEPROM write %s, "
249: "IrDA is %savailable\n",
250: (data & MCS7840_DEV_MODE_RESET) ? "low" : "high",
251: (data & MCS7840_DEV_MODE_SER_PRSNT) ? "yes" : "no",
252: (data & MCS7840_DEV_MODE_PLLBYPASS) ? "bypassed" : "avail",
253: (data & MCS7840_DEV_MODE_PORBYPASS) ? "bypassed" : "avail",
254: (data & MCS7840_DEV_MODE_SELECT24S) ? "2" : "4",
255: (data & MCS7840_DEV_MODE_EEPROMWR) ? "enabled" : "disabled",
256: (data & MCS7840_DEV_MODE_IRDA) ? "" : "not ");
257: }
258:
259: /*
260: * Set up the interrupt pipe
261: */
262: id = usbd_get_interface_descriptor(sc->sc_iface);
263: intr_addr = -1;
264: for (i = 0 ; i < id->bNumEndpoints ; i++) {
265: ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
266: if (ed == NULL) continue;
267: if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN
268: || UE_GET_XFERTYPE(ed->bmAttributes) != UE_INTERRUPT)
269: continue;
1.3 martin 270: sc->sc_intr_buflen = UGETW(ed->wMaxPacketSize);
1.1 martin 271: intr_addr = ed->bEndpointAddress;
272: break;
273: }
274: if (intr_addr < 0) {
275: aprint_error_dev(self, "interrupt pipe not found\n");
1.13 mrg 276: sc->sc_dying = true;
1.1 martin 277: return;
278: }
1.3 martin 279: sc->sc_intr_buf = kmem_alloc(sc->sc_intr_buflen, KM_SLEEP);
1.1 martin 280:
281: error = usbd_open_pipe_intr(sc->sc_iface, intr_addr,
282: USBD_SHORT_XFER_OK, &sc->sc_intr_pipe, sc, sc->sc_intr_buf,
1.3 martin 283: sc->sc_intr_buflen, umcs7840_intr, 100);
1.1 martin 284: if (error) {
285: aprint_error_dev(self, "cannot open interrupt pipe "
286: "(addr %d)\n", intr_addr);
1.13 mrg 287: sc->sc_dying = true;
1.1 martin 288: return;
289: }
290:
1.5 martin 291: usb_init_task(&sc->sc_change_task, umcs7840_change_task, sc,
292: USB_TASKQ_MPSAFE);
1.1 martin 293:
1.10 msaitoh 294: usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev);
1.1 martin 295:
1.14 maxv 296: sc->sc_init_state = UMCS_INIT_INITED;
297:
1.9 skrll 298: memset(&ucaa, 0, sizeof(ucaa));
299: ucaa.ucaa_ibufsize = 256;
300: ucaa.ucaa_obufsize = 256;
301: ucaa.ucaa_ibufsizepad = 256;
302: ucaa.ucaa_opkthdrlen = 0;
303: ucaa.ucaa_device = sc->sc_udev;
304: ucaa.ucaa_iface = sc->sc_iface;
305: ucaa.ucaa_methods = &umcs7840_methods;
306: ucaa.ucaa_arg = sc;
1.1 martin 307:
308: for (i = 0; i < sc->sc_numports; i++) {
1.9 skrll 309: ucaa.ucaa_bulkin = ucaa.ucaa_bulkout = -1;
1.1 martin 310:
311: /*
312: * On four port cards, endpoints are 0/1 for first,
313: * 2/3 for second, ...
314: * On two port cards, they are 0/1 for first, 4/5 for second.
315: * On single port, just 0/1 will be used.
316: */
317: int phyport = i * (sc->sc_numports == 2 ? 2 : 1);
318:
319: ed = usbd_interface2endpoint_descriptor(sc->sc_iface,
320: phyport*2);
321: if (ed == NULL) {
322: aprint_error_dev(self,
323: "no bulk in endpoint found for %d\n", i);
1.13 mrg 324: sc->sc_dying = true;
1.1 martin 325: return;
326: }
1.9 skrll 327: ucaa.ucaa_bulkin = ed->bEndpointAddress;
1.1 martin 328:
329: ed = usbd_interface2endpoint_descriptor(sc->sc_iface,
330: phyport*2 + 1);
331: if (ed == NULL) {
332: aprint_error_dev(self,
333: "no bulk out endpoint found for %d\n", i);
334: return;
335: }
1.9 skrll 336: ucaa.ucaa_bulkout = ed->bEndpointAddress;
337: ucaa.ucaa_portno = i;
1.1 martin 338: DPRINTF(("port %d physical port %d bulk-in %d bulk-out %d\n",
1.9 skrll 339: i, phyport, ucaa.ucaa_bulkin, ucaa.ucaa_bulkout));
1.1 martin 340:
341: sc->sc_ports[i].sc_port_phys = phyport;
342: sc->sc_ports[i].sc_port_ucom =
1.15.10.1 thorpej 343: config_found(self, &ucaa, ucomprint,
344: CFARG_SUBMATCH, ucomsubmatch,
345: CFARG_EOL);
1.1 martin 346: }
347: }
348:
349: static int
350: umcs7840_get_reg(struct umcs7840_softc *sc, uint8_t reg, uint8_t *data)
351: {
352: usb_device_request_t req;
353: int err;
354:
355: req.bmRequestType = UT_READ_VENDOR_DEVICE;
356: req.bRequest = MCS7840_RDREQ;
357: USETW(req.wValue, 0);
358: USETW(req.wIndex, reg);
359: USETW(req.wLength, UMCS7840_READ_LENGTH);
360:
361: err = usbd_do_request(sc->sc_udev, &req, data);
362: if (err)
363: aprint_normal_dev(sc->sc_dev,
364: "Reading register %d failed: %s\n", reg, usbd_errstr(err));
365: return err;
366: }
367:
368: static int
369: umcs7840_set_reg(struct umcs7840_softc *sc, uint8_t reg, uint8_t data)
370: {
371: usb_device_request_t req;
372: int err;
373:
374: req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
375: req.bRequest = MCS7840_WRREQ;
376: USETW(req.wValue, data);
377: USETW(req.wIndex, reg);
378: USETW(req.wLength, 0);
379:
380: err = usbd_do_request(sc->sc_udev, &req, 0);
381: if (err)
382: aprint_normal_dev(sc->sc_dev, "Writing register %d failed: %s\n", reg, usbd_errstr(err));
383:
384: return err;
385: }
386:
387: static int
388: umcs7840_get_UART_reg(struct umcs7840_softc *sc, uint8_t portno,
389: uint8_t reg, uint8_t *data)
390: {
391: usb_device_request_t req;
392: uint16_t wVal;
393: int err;
394:
395: /* portno is port number */
396: wVal = ((uint16_t)(portno + 1)) << 8;
397:
398: req.bmRequestType = UT_READ_VENDOR_DEVICE;
399: req.bRequest = MCS7840_RDREQ;
400: USETW(req.wValue, wVal);
401: USETW(req.wIndex, reg);
402: USETW(req.wLength, UMCS7840_READ_LENGTH);
403:
404: err = usbd_do_request(sc->sc_udev, &req, data);
405: if (err)
406: aprint_normal_dev(sc->sc_dev, "Reading UART %d register %d failed: %s\n", portno, reg, usbd_errstr(err));
407: return err;
408: }
409:
410: static int
411: umcs7840_set_UART_reg(struct umcs7840_softc *sc, uint8_t portno, uint8_t reg, uint8_t data)
412: {
413: usb_device_request_t req;
414: int err;
415: uint16_t wVal;
416:
417: /* portno is the physical port number */
418: wVal = ((uint16_t)(portno + 1)) << 8 | data;
419:
420: req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
421: req.bRequest = MCS7840_WRREQ;
422: USETW(req.wValue, wVal);
423: USETW(req.wIndex, reg);
424: USETW(req.wLength, 0);
425:
426: err = usbd_do_request(sc->sc_udev, &req, NULL);
427: if (err)
1.3 martin 428: aprint_error_dev(sc->sc_dev,
429: "Writing UART %d register %d failed: %s\n",
430: portno, reg, usbd_errstr(err));
1.1 martin 431: return err;
432: }
433:
434: static int
1.8 martin 435: umcs7840_set_baudrate(struct umcs7840_softc *sc, uint8_t portno,
436: uint32_t rate)
1.1 martin 437: {
438: int err;
439: uint16_t divisor;
440: uint8_t clk;
441: uint8_t data;
442: uint8_t physport = sc->sc_ports[portno].sc_port_phys;
443: int spreg = umcs7840_reg_sp(physport);
444:
445: if (umcs7840_calc_baudrate(rate, &divisor, &clk)) {
446: DPRINTF(("Port %d bad speed: %d\n", portno, rate));
1.9 skrll 447: return -1;
1.1 martin 448: }
449: if (divisor == 0 || (clk & MCS7840_DEV_SPx_CLOCK_MASK) != clk) {
1.8 martin 450: DPRINTF(("Port %d bad speed calculation: %d\n", portno,
451: rate));
1.9 skrll 452: return -1;
1.1 martin 453: }
454: DPRINTF(("Port %d set speed: %d (%02x / %d)\n", portno, rate, clk, divisor));
455:
456: /* Set clock source for standard BAUD frequences */
457: err = umcs7840_get_reg(sc, spreg, &data);
458: if (err)
459: return err;
460: data &= MCS7840_DEV_SPx_CLOCK_MASK;
461: data |= clk;
462: err = umcs7840_set_reg(sc, spreg, data);
463: if (err)
464: return err;
465:
466: /* Set divider */
467: sc->sc_ports[portno].sc_port_lcr |= MCS7840_UART_LCR_DIVISORS;
468: err = umcs7840_set_UART_reg(sc, physport, MCS7840_UART_REG_LCR, sc->sc_ports[portno].sc_port_lcr);
469: if (err)
470: return err;
471:
472: err = umcs7840_set_UART_reg(sc, physport, MCS7840_UART_REG_DLL, (uint8_t)(divisor & 0xff));
473: if (err)
474: return err;
475: err = umcs7840_set_UART_reg(sc, physport, MCS7840_UART_REG_DLM, (uint8_t)((divisor >> 8) & 0xff));
476: if (err)
477: return err;
478:
479: /* Turn off access to DLL/DLM registers of UART */
480: sc->sc_ports[portno].sc_port_lcr &= ~MCS7840_UART_LCR_DIVISORS;
481: err = umcs7840_set_UART_reg(sc, physport, MCS7840_UART_REG_LCR, sc->sc_ports[portno].sc_port_lcr);
482: if (err)
483: return err;
1.9 skrll 484: return 0;
1.1 martin 485: }
486:
487: static int
488: umcs7840_calc_baudrate(uint32_t rate, uint16_t *divisor, uint8_t *clk)
489: {
490: /* Maximum speeds for standard frequences, when PLL is not used */
491: static const uint32_t umcs7840_baudrate_divisors[] =
492: {0, 115200, 230400, 403200, 460800, 806400, 921600,
493: 1572864, 3145728,};
494: static const uint8_t umcs7840_baudrate_divisors_len =
495: __arraycount(umcs7840_baudrate_divisors);
496: uint8_t i = 0;
497:
498: if (rate > umcs7840_baudrate_divisors[umcs7840_baudrate_divisors_len - 1])
1.9 skrll 499: return -1;
1.1 martin 500:
501: for (i = 0; i < umcs7840_baudrate_divisors_len - 1
502: && !(rate > umcs7840_baudrate_divisors[i]
503: && rate <= umcs7840_baudrate_divisors[i + 1]); ++i);
504: *divisor = umcs7840_baudrate_divisors[i + 1] / rate;
505: /* 0x00 .. 0x70 */
506: *clk = i << MCS7840_DEV_SPx_CLOCK_SHIFT;
1.9 skrll 507: return 0;
1.1 martin 508: }
509:
1.9 skrll 510: static int
1.1 martin 511: umcs7840_detach(device_t self, int flags)
512: {
513: struct umcs7840_softc *sc = device_private(self);
514: int rv = 0, i;
515:
1.4 martin 516: sc->sc_dying = true;
1.3 martin 517:
1.1 martin 518: /* close interrupt pipe */
519: if (sc->sc_intr_pipe != NULL) {
1.13 mrg 520: usbd_abort_pipe(sc->sc_intr_pipe);
521: usbd_close_pipe(sc->sc_intr_pipe);
522: sc->sc_intr_pipe = NULL;
523: }
524: if (sc->sc_intr_buf != NULL) {
1.3 martin 525: kmem_free(sc->sc_intr_buf, sc->sc_intr_buflen);
1.13 mrg 526: sc->sc_intr_buf = NULL;
1.1 martin 527: }
1.14 maxv 528:
529: if (sc->sc_init_state < UMCS_INIT_INITED)
530: return 0;
531:
1.12 skrll 532: usb_rem_task_wait(sc->sc_udev, &sc->sc_change_task, USB_TASKQ_DRIVER,
533: NULL);
1.1 martin 534:
1.4 martin 535: /* detach children */
536: for (i = 0; i < sc->sc_numports; i++) {
537: if (sc->sc_ports[i].sc_port_ucom) {
1.13 mrg 538: rv |= config_detach(sc->sc_ports[i].sc_port_ucom,
1.4 martin 539: flags);
1.13 mrg 540: sc->sc_ports[i].sc_port_ucom = NULL;
1.4 martin 541: }
542: }
543:
1.10 msaitoh 544: usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev);
1.1 martin 545:
546: return rv;
547: }
548:
549: static void
550: umcs7840_childdet(device_t self, device_t child)
551: {
552: struct umcs7840_softc *sc = device_private(self);
553: int i;
554:
555: for (i = 0; i < sc->sc_numports; i++) {
556: if (child == sc->sc_ports[i].sc_port_ucom) {
557: sc->sc_ports[i].sc_port_ucom = NULL;
558: return;
559: }
560: }
561: }
562:
563: static void
564: umcs7840_get_status(void *self, int portno, u_char *lsr, u_char *msr)
565: {
566: struct umcs7840_softc *sc = self;
567: uint8_t pn = sc->sc_ports[portno].sc_port_phys;
568: uint8_t hw_lsr = 0; /* local line status register */
569: uint8_t hw_msr = 0; /* local modem status register */
570:
1.4 martin 571: if (sc->sc_dying)
572: return;
573:
1.1 martin 574: /* Read LSR & MSR */
575: umcs7840_get_UART_reg(sc, pn, MCS7840_UART_REG_LSR, &hw_lsr);
576: umcs7840_get_UART_reg(sc, pn, MCS7840_UART_REG_MSR, &hw_msr);
577:
578: *lsr = hw_lsr;
579: *msr = hw_msr;
580: }
581:
582: static void
583: umcs7840_set(void *self, int portno, int reg, int onoff)
584: {
585: struct umcs7840_softc *sc = self;
586:
587: if (sc->sc_dying)
588: return;
589:
590: switch (reg) {
591: case UCOM_SET_DTR:
1.8 martin 592: umcs7840_dtr(sc, portno, onoff);
1.1 martin 593: break;
594: case UCOM_SET_RTS:
1.8 martin 595: umcs7840_rts(sc, portno, onoff);
1.1 martin 596: break;
597: case UCOM_SET_BREAK:
1.8 martin 598: umcs7840_break(sc, portno, onoff);
1.1 martin 599: break;
600: default:
601: break;
602: }
603: }
604:
605: static int
606: umcs7840_param(void *self, int portno, struct termios *t)
607: {
608: struct umcs7840_softc *sc = self;
609: int pn = sc->sc_ports[portno].sc_port_phys;
610: uint8_t lcr = sc->sc_ports[portno].sc_port_lcr;
611: uint8_t mcr = sc->sc_ports[portno].sc_port_mcr;
612:
1.13 mrg 613: if (sc->sc_dying)
614: return EIO;
615:
1.1 martin 616: if (t->c_cflag & CSTOPB) {
617: lcr |= MCS7840_UART_LCR_STOPB2;
618: } else {
619: lcr |= MCS7840_UART_LCR_STOPB1;
620: }
621:
622: lcr &= ~MCS7840_UART_LCR_PARITYMASK;
623: if (t->c_cflag & PARENB) {
624: lcr |= MCS7840_UART_LCR_PARITYON;
625: if (t->c_cflag & PARODD) {
626: lcr = MCS7840_UART_LCR_PARITYODD;
627: } else {
628: lcr = MCS7840_UART_LCR_PARITYEVEN;
629: }
630: } else {
631: lcr &= ~MCS7840_UART_LCR_PARITYON;
632: }
633:
634: lcr &= ~MCS7840_UART_LCR_DATALENMASK;
635: switch (t->c_cflag & CSIZE) {
636: case CS5:
637: lcr |= MCS7840_UART_LCR_DATALEN5;
638: break;
639: case CS6:
640: lcr |= MCS7840_UART_LCR_DATALEN6;
641: break;
642: case CS7:
643: lcr |= MCS7840_UART_LCR_DATALEN7;
644: break;
645: case CS8:
646: lcr |= MCS7840_UART_LCR_DATALEN8;
647: break;
648: }
649:
650: if (t->c_cflag & CRTSCTS)
651: mcr |= MCS7840_UART_MCR_CTSRTS;
652: else
653: mcr &= ~MCS7840_UART_MCR_CTSRTS;
654:
655: if (t->c_cflag & CLOCAL)
656: mcr &= ~MCS7840_UART_MCR_DTRDSR;
657: else
658: mcr |= MCS7840_UART_MCR_DTRDSR;
659:
660: sc->sc_ports[portno].sc_port_lcr = lcr;
661: umcs7840_set_UART_reg(sc, pn, MCS7840_UART_REG_LCR,
662: sc->sc_ports[pn].sc_port_lcr);
663:
664: sc->sc_ports[portno].sc_port_mcr = mcr;
665: umcs7840_set_UART_reg(sc, pn, MCS7840_UART_REG_MCR,
666: sc->sc_ports[pn].sc_port_mcr);
667:
1.8 martin 668: if (umcs7840_set_baudrate(sc, portno, t->c_ospeed))
1.1 martin 669: return EIO;
670:
671: return 0;
672: }
673:
674: static void
675: umcs7840_dtr(struct umcs7840_softc *sc, int portno, bool onoff)
676: {
677: int pn = sc->sc_ports[portno].sc_port_phys;
678: uint8_t mcr = sc->sc_ports[portno].sc_port_mcr;
679:
680: if (onoff)
681: mcr |= MCS7840_UART_MCR_DTR;
682: else
683: mcr &= ~MCS7840_UART_MCR_DTR;
684:
685: sc->sc_ports[portno].sc_port_mcr = mcr;
686: umcs7840_set_UART_reg(sc, pn, MCS7840_UART_REG_MCR,
687: sc->sc_ports[pn].sc_port_mcr);
688: }
689:
690: static void
691: umcs7840_rts(struct umcs7840_softc *sc, int portno, bool onoff)
692: {
693: int pn = sc->sc_ports[portno].sc_port_phys;
694: uint8_t mcr = sc->sc_ports[portno].sc_port_mcr;
695:
696: if (onoff)
697: mcr |= MCS7840_UART_MCR_RTS;
698: else
699: mcr &= ~MCS7840_UART_MCR_RTS;
700:
701: sc->sc_ports[portno].sc_port_mcr = mcr;
702: umcs7840_set_UART_reg(sc, pn, MCS7840_UART_REG_MCR,
703: sc->sc_ports[pn].sc_port_mcr);
704: }
705:
706: static void
707: umcs7840_break(struct umcs7840_softc *sc, int portno, bool onoff)
708: {
709: int pn = sc->sc_ports[portno].sc_port_phys;
710: uint8_t lcr = sc->sc_ports[portno].sc_port_lcr;
711:
712: if (onoff)
713: lcr |= MCS7840_UART_LCR_BREAK;
714: else
715: lcr &= ~MCS7840_UART_LCR_BREAK;
716:
717: sc->sc_ports[portno].sc_port_lcr = lcr;
718: umcs7840_set_UART_reg(sc, pn, MCS7840_UART_REG_LCR,
719: sc->sc_ports[pn].sc_port_lcr);
720: }
721:
722: static int
723: umcs7840_port_open(void *self, int portno)
724: {
725: struct umcs7840_softc *sc = self;
726: int pn = sc->sc_ports[portno].sc_port_phys;
727: int spreg = umcs7840_reg_sp(pn);
728: int ctrlreg = umcs7840_reg_ctrl(pn);
729: uint8_t data;
730:
731: if (sc->sc_dying)
732: return EIO;
733:
734: /* If it very first open, finish global configuration */
735: if (!sc->sc_init_done) {
736: if (umcs7840_get_reg(sc, MCS7840_DEV_REG_CONTROL1, &data))
737: return EIO;
738: data |= MCS7840_DEV_CONTROL1_DRIVER_DONE;
739: if (umcs7840_set_reg(sc, MCS7840_DEV_REG_CONTROL1, data))
740: return EIO;
741: sc->sc_init_done = 1;
742: }
743:
744: /* Toggle reset bit on-off */
745: if (umcs7840_get_reg(sc, spreg, &data))
746: return EIO;
747: data |= MCS7840_DEV_SPx_UART_RESET;
748: if (umcs7840_set_reg(sc, spreg, data))
749: return EIO;
750: data &= ~MCS7840_DEV_SPx_UART_RESET;
751: if (umcs7840_set_reg(sc, spreg, data))
752: return EIO;
753:
754: /* Set RS-232 mode */
755: if (umcs7840_set_UART_reg(sc, pn, MCS7840_UART_REG_SCRATCHPAD,
756: MCS7840_UART_SCRATCHPAD_RS232))
757: return EIO;
758:
759: /* Disable RX on time of initialization */
760: if (umcs7840_get_reg(sc, ctrlreg, &data))
761: return EIO;
762: data |= MCS7840_DEV_CONTROLx_RX_DISABLE;
763: if (umcs7840_set_reg(sc, ctrlreg, data))
764: return EIO;
765:
766: /* Disable all interrupts */
767: if (umcs7840_set_UART_reg(sc, pn, MCS7840_UART_REG_IER, 0))
768: return EIO;
769:
770: /* Reset FIFO -- documented */
771: if (umcs7840_set_UART_reg(sc, pn, MCS7840_UART_REG_FCR, 0))
772: return EIO;
773: if (umcs7840_set_UART_reg(sc, pn, MCS7840_UART_REG_FCR,
774: MCS7840_UART_FCR_ENABLE | MCS7840_UART_FCR_FLUSHRHR |
775: MCS7840_UART_FCR_FLUSHTHR | MCS7840_UART_FCR_RTL_1_14))
776: return EIO;
777:
778: /* Set 8 bit, no parity, 1 stop bit -- documented */
779: sc->sc_ports[pn].sc_port_lcr =
780: MCS7840_UART_LCR_DATALEN8 | MCS7840_UART_LCR_STOPB1;
781: if (umcs7840_set_UART_reg(sc, pn, MCS7840_UART_REG_LCR,
782: sc->sc_ports[pn].sc_port_lcr))
783: return EIO;
784:
785: /*
786: * Enable DTR/RTS on modem control, enable modem interrupts --
787: * documented
788: */
789: sc->sc_ports[pn].sc_port_mcr = MCS7840_UART_MCR_DTR
790: | MCS7840_UART_MCR_RTS | MCS7840_UART_MCR_IE;
791: if (umcs7840_set_UART_reg(sc, pn, MCS7840_UART_REG_MCR,
792: sc->sc_ports[pn].sc_port_mcr))
793: return EIO;
794:
795: /* Clearing Bulkin and Bulkout FIFO */
796: if (umcs7840_get_reg(sc, spreg, &data))
797: return EIO;
798: data |= MCS7840_DEV_SPx_RESET_OUT_FIFO | MCS7840_DEV_SPx_RESET_IN_FIFO;
799: if (umcs7840_set_reg(sc, spreg, data))
800: return EIO;
801: data &= ~(MCS7840_DEV_SPx_RESET_OUT_FIFO
802: | MCS7840_DEV_SPx_RESET_IN_FIFO);
803: if (umcs7840_set_reg(sc, spreg, data))
804: return EIO;
805:
806: /* Set speed 9600 */
1.8 martin 807: if (umcs7840_set_baudrate(sc, portno, 9600))
1.1 martin 808: return EIO;
809:
810:
811: /* Finally enable all interrupts -- documented */
812: /*
813: * Copied from vendor driver, I don't know why we should read LCR
814: * here
815: */
816: if (umcs7840_get_UART_reg(sc, pn, MCS7840_UART_REG_LCR,
817: &sc->sc_ports[pn].sc_port_lcr))
818: return EIO;
819: if (umcs7840_set_UART_reg(sc, pn, MCS7840_UART_REG_IER,
820: MCS7840_UART_IER_RXSTAT | MCS7840_UART_IER_MODEM))
821: return EIO;
822:
823: /* Enable RX */
824: if (umcs7840_get_reg(sc, ctrlreg, &data))
825: return EIO;
826: data &= ~MCS7840_DEV_CONTROLx_RX_DISABLE;
827: if (umcs7840_set_reg(sc, ctrlreg, data))
828: return EIO;
829: return 0;
830: }
831:
832: static void
833: umcs7840_port_close(void *self, int portno)
834: {
835: struct umcs7840_softc *sc = self;
836: int pn = sc->sc_ports[portno].sc_port_phys;
837: int ctrlreg = umcs7840_reg_ctrl(pn);
838: uint8_t data;
839:
1.4 martin 840: if (sc->sc_dying)
841: return;
842:
1.1 martin 843: umcs7840_set_UART_reg(sc, pn, MCS7840_UART_REG_MCR, 0);
844: umcs7840_set_UART_reg(sc, pn, MCS7840_UART_REG_IER, 0);
845:
846: /* Disable RX */
847: if (umcs7840_get_reg(sc, ctrlreg, &data))
848: return;
849: data |= MCS7840_DEV_CONTROLx_RX_DISABLE;
850: if (umcs7840_set_reg(sc, ctrlreg, data))
851: return;
852: }
853:
854: static void
1.9 skrll 855: umcs7840_intr(struct usbd_xfer *xfer, void *priv,
1.1 martin 856: usbd_status status)
857: {
858: struct umcs7840_softc *sc = priv;
859: u_char *buf = sc->sc_intr_buf;
860: int actlen;
1.5 martin 861: int subunit;
1.1 martin 862:
1.13 mrg 863: if (sc->sc_dying)
864: return;
865:
1.4 martin 866: if (status == USBD_NOT_STARTED || status == USBD_CANCELLED
867: || status == USBD_IOERROR)
1.1 martin 868: return;
869:
870: if (status != USBD_NORMAL_COMPLETION) {
871: aprint_error_dev(sc->sc_dev,
872: "umcs7840_intr: abnormal status: %s\n",
873: usbd_errstr(status));
874: usbd_clear_endpoint_stall_async(sc->sc_intr_pipe);
875: return;
876: }
877:
878: usbd_get_xfer_status(xfer, NULL, NULL, &actlen, NULL);
879: if (actlen == 5 || actlen == 13) {
1.6 riastrad 880: uint32_t change_mask = 0;
1.1 martin 881: /* Check status of all ports */
882: for (subunit = 0; subunit < sc->sc_numports; subunit++) {
883: uint8_t pn = sc->sc_ports[subunit].sc_port_phys;
884: if (buf[pn] & MCS7840_UART_ISR_NOPENDING)
885: continue;
886: DPRINTF(("Port %d has pending interrupt: %02x "
887: "(FIFO: %02x)\n", pn,
888: buf[pn] & MCS7840_UART_ISR_INTMASK,
889: buf[pn] & (~MCS7840_UART_ISR_INTMASK)));
890: switch (buf[pn] & MCS7840_UART_ISR_INTMASK) {
891: case MCS7840_UART_ISR_RXERR:
892: case MCS7840_UART_ISR_RXHASDATA:
893: case MCS7840_UART_ISR_RXTIMEOUT:
894: case MCS7840_UART_ISR_MSCHANGE:
1.6 riastrad 895: change_mask |= (1U << subunit);
1.1 martin 896: break;
897: default:
898: /* Do nothing */
899: break;
900: }
901: }
1.5 martin 902:
1.6 riastrad 903: if (change_mask != 0) {
904: atomic_or_32(&sc->sc_change_mask, change_mask);
905: usb_add_task(sc->sc_udev, &sc->sc_change_task,
906: USB_TASKQ_DRIVER);
907: }
1.1 martin 908: } else {
1.3 martin 909: aprint_error_dev(sc->sc_dev,
910: "Invalid interrupt data length %d", actlen);
1.1 martin 911: }
912: }
913:
914: static void
1.5 martin 915: umcs7840_change_task(void *arg)
1.1 martin 916: {
917: struct umcs7840_softc *sc = arg;
1.6 riastrad 918: uint32_t change_mask;
1.1 martin 919: int i;
920:
1.6 riastrad 921: change_mask = atomic_swap_32(&sc->sc_change_mask, 0);
1.1 martin 922: for (i = 0; i < sc->sc_numports; i++) {
1.6 riastrad 923: if (ISSET(change_mask, (1U << i)))
1.1 martin 924: ucom_status_change(device_private(
925: sc->sc_ports[i].sc_port_ucom));
926: }
927: }
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