/* $OpenBSD: ucycom.c,v 1.15 2009/10/13 19:33:17 pirofti Exp $ */ /* $NetBSD: ucycom.c,v 1.3 2005/08/05 07:27:47 skrll Exp $ */ /* * Copyright (c) 2005 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Nick Hudson * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * This code is based on the ucom driver. */ /* * Device driver for Cypress CY7C637xx and CY7C640/1xx series USB to * RS232 bridges. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef UCYCOM_DEBUG #define DPRINTF(x) if (ucycomdebug) printf x #define DPRINTFN(n, x) if (ucycomdebug > (n)) printf x int ucycomdebug = 200; #else #define DPRINTF(x) #define DPRINTFN(n,x) #endif /* Configuration Byte */ #define UCYCOM_RESET 0x80 #define UCYCOM_PARITY_TYPE_MASK 0x20 #define UCYCOM_PARITY_ODD 0x20 #define UCYCOM_PARITY_EVEN 0x00 #define UCYCOM_PARITY_MASK 0x10 #define UCYCOM_PARITY_ON 0x10 #define UCYCOM_PARITY_OFF 0x00 #define UCYCOM_STOP_MASK 0x08 #define UCYCOM_STOP_BITS_2 0x08 #define UCYCOM_STOP_BITS_1 0x00 #define UCYCOM_DATA_MASK 0x03 #define UCYCOM_DATA_BITS_8 0x03 #define UCYCOM_DATA_BITS_7 0x02 #define UCYCOM_DATA_BITS_6 0x01 #define UCYCOM_DATA_BITS_5 0x00 /* Modem (Input) status byte */ #define UCYCOM_RI 0x80 #define UCYCOM_DCD 0x40 #define UCYCOM_DSR 0x20 #define UCYCOM_CTS 0x10 #define UCYCOM_ERROR 0x08 #define UCYCOM_LMASK 0x07 /* Modem (Output) control byte */ #define UCYCOM_DTR 0x20 #define UCYCOM_RTS 0x10 #define UCYCOM_ORESET 0x08 struct ucycom_softc { struct uhidev sc_hdev; usbd_device_handle sc_udev; /* uhidev parameters */ size_t sc_flen; /* feature report length */ size_t sc_ilen; /* input report length */ size_t sc_olen; /* output report length */ uint8_t *sc_obuf; uint8_t *sc_ibuf; uint32_t sc_icnt; /* settings */ uint32_t sc_baud; uint8_t sc_cfg; /* Data format */ uint8_t sc_mcr; /* Modem control */ uint8_t sc_msr; /* Modem status */ uint8_t sc_newmsr; /* from HID intr */ int sc_swflags; struct device *sc_subdev; /* flags */ u_char sc_dying; }; /* Callback routines */ void ucycom_set(void *, int, int, int); int ucycom_param(void *, int, struct termios *); void ucycom_get_status(void *, int, u_char *, u_char *); int ucycom_open(void *, int); void ucycom_close(void *, int); void ucycom_write(void *, int, u_char *, u_char *, u_int32_t *); void ucycom_read(void *, int, u_char **, u_int32_t *); struct ucom_methods ucycom_methods = { NULL, /* ucycom_get_status, */ ucycom_set, ucycom_param, NULL, ucycom_open, ucycom_close, ucycom_read, ucycom_write, }; void ucycom_intr(struct uhidev *, void *, u_int); void ucycom_get_cfg(struct ucycom_softc *); const struct usb_devno ucycom_devs[] = { { USB_VENDOR_CYPRESS, USB_PRODUCT_CYPRESS_USBRS232 }, { USB_VENDOR_DELORME, USB_PRODUCT_DELORME_EMUSB }, { USB_VENDOR_DELORME, USB_PRODUCT_DELORME_EMLT20 }, }; #define ucycom_lookup(v, p) usb_lookup(ucycom_devs, v, p) int ucycom_match(struct device *, void *, void *); void ucycom_attach(struct device *, struct device *, void *); int ucycom_detach(struct device *, int); int ucycom_activate(struct device *, int); struct cfdriver ucycom_cd = { NULL, "ucycom", DV_DULL }; const struct cfattach ucycom_ca = { sizeof(struct ucycom_softc), ucycom_match, ucycom_attach, ucycom_detach, ucycom_activate, }; int ucycom_match(struct device *parent, void *match, void *aux) { struct uhidev_attach_arg *uha = aux; DPRINTF(("ucycom match\n")); return (ucycom_lookup(uha->uaa->vendor, uha->uaa->product) != NULL ? UMATCH_VENDOR_PRODUCT : UMATCH_NONE); } void ucycom_attach(struct device *parent, struct device *self, void *aux) { struct ucycom_softc *sc = (struct ucycom_softc *)self; struct usb_attach_arg *uaa = aux; struct uhidev_attach_arg *uha = (struct uhidev_attach_arg *)uaa; usbd_device_handle dev = uha->parent->sc_udev; struct ucom_attach_args uca; int size, repid, err; void *desc; sc->sc_hdev.sc_intr = ucycom_intr; sc->sc_hdev.sc_parent = uha->parent; sc->sc_hdev.sc_report_id = uha->reportid; uhidev_get_report_desc(uha->parent, &desc, &size); repid = uha->reportid; sc->sc_ilen = hid_report_size(desc, size, hid_input, repid); sc->sc_olen = hid_report_size(desc, size, hid_output, repid); sc->sc_flen = hid_report_size(desc, size, hid_feature, repid); DPRINTF(("ucycom_open: olen %d ilen %d flen %d\n", sc->sc_ilen, sc->sc_olen, sc->sc_flen)); printf("\n"); sc->sc_udev = dev; sc->sc_msr = sc->sc_mcr = 0; err = uhidev_open(&sc->sc_hdev); if (err) { DPRINTF(("ucycom_open: uhidev_open %d\n", err)); return; } DPRINTF(("ucycom attach: sc %p opipe %p ipipe %p report_id %d\n", sc, sc->sc_hdev.sc_parent->sc_opipe, sc->sc_hdev.sc_parent->sc_ipipe, uha->reportid)); /* bulkin, bulkout set above */ bzero(&uca, sizeof uca); uca.bulkin = uca.bulkout = -1; uca.uhidev = sc->sc_hdev.sc_parent; uca.ibufsize = sc->sc_ilen - 1; uca.obufsize = sc->sc_olen - 1; uca.ibufsizepad = 1; uca.opkthdrlen = 0; uca.device = uaa->device; uca.iface = uaa->iface; uca.methods = &ucycom_methods; uca.arg = sc; uca.info = NULL; usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, &sc->sc_hdev.sc_dev); sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch); DPRINTF(("ucycom_attach: complete %p\n", sc->sc_subdev)); } void ucycom_get_status(void *addr, int portno, u_char *lsr, u_char *msr) { struct ucycom_softc *sc = addr; DPRINTF(("ucycom_get_status:\n")); #if 0 if (lsr != NULL) *lsr = sc->sc_lsr; #endif if (msr != NULL) *msr = sc->sc_msr; } int ucycom_open(void *addr, int portno) { struct ucycom_softc *sc = addr; struct termios t; int err; DPRINTF(("ucycom_open: complete\n")); if (sc->sc_dying) return (EIO); /* Allocate an output report buffer */ sc->sc_obuf = malloc(sc->sc_olen, M_USBDEV, M_WAITOK | M_ZERO); /* Allocate an input report buffer */ sc->sc_ibuf = malloc(sc->sc_ilen, M_USBDEV, M_WAITOK); DPRINTF(("ucycom_open: sc->sc_ibuf=%p sc->sc_obuf=%p \n", sc->sc_ibuf, sc->sc_obuf)); t.c_ospeed = 9600; t.c_cflag = CSTOPB | CS8; (void)ucycom_param(sc, portno, &t); sc->sc_mcr = UCYCOM_DTR | UCYCOM_RTS; sc->sc_obuf[0] = sc->sc_mcr; err = uhidev_write(sc->sc_hdev.sc_parent, sc->sc_obuf, sc->sc_olen); if (err) { DPRINTF(("ucycom_open: set RTS err=%d\n", err)); return (EIO); } return (0); } void ucycom_close(void *addr, int portno) { struct ucycom_softc *sc = addr; int s; if (sc->sc_dying) return; s = splusb(); if (sc->sc_obuf != NULL) { free(sc->sc_obuf, M_USBDEV); sc->sc_obuf = NULL; } if (sc->sc_ibuf != NULL) { free(sc->sc_ibuf, M_USBDEV); sc->sc_ibuf = NULL; } splx(s); } void ucycom_read(void *addr, int portno, u_char **ptr, u_int32_t *count) { struct ucycom_softc *sc = addr; if (sc->sc_newmsr ^ sc->sc_msr) { DPRINTF(("ucycom_read: msr %d new %d\n", sc->sc_msr, sc->sc_newmsr)); sc->sc_msr = sc->sc_newmsr; ucom_status_change((struct ucom_softc *)sc->sc_subdev); } DPRINTF(("ucycom_read: buf %p chars %d\n", sc->sc_ibuf, sc->sc_icnt)); *ptr = sc->sc_ibuf; *count = sc->sc_icnt; } void ucycom_write(void *addr, int portno, u_char *to, u_char *data, u_int32_t *cnt) { struct ucycom_softc *sc = addr; u_int32_t len; #ifdef UCYCOM_DEBUG u_int32_t want = *cnt; #endif /* * The 8 byte output report uses byte 0 for control and byte * count. * * The 32 byte output report uses byte 0 for control. Byte 1 * is used for byte count. */ len = sc->sc_olen; memset(to, 0, len); switch (sc->sc_olen) { case 8: to[0] = *cnt | sc->sc_mcr; memcpy(&to[1], data, *cnt); DPRINTF(("ucycomstart(8): to[0] = %d | %d = %d\n", *cnt, sc->sc_mcr, to[0])); break; case 32: to[0] = sc->sc_mcr; to[1] = *cnt; memcpy(&to[2], data, *cnt); DPRINTF(("ucycomstart(32): to[0] = %d\nto[1] = %d\n", to[0], to[1])); break; } #ifdef UCYCOM_DEBUG if (ucycomdebug > 5) { int i; if (len != 0) { DPRINTF(("ucycomstart: to[0..%d) =", len-1)); for (i = 0; i < len; i++) DPRINTF((" %02x", to[i])); DPRINTF(("\n")); } } #endif *cnt = len; #if 0 ucycom_get_cfg(sc); #endif DPRINTFN(4,("ucycomstart: req %d chars did %d chars\n", want, len)); } int ucycom_param(void *addr, int portno, struct termios *t) { struct ucycom_softc *sc = addr; uint8_t report[5]; uint32_t baud = 0; uint8_t cfg; int err; if (sc->sc_dying) return (EIO); switch (t->c_ospeed) { case 600: case 1200: case 2400: case 4800: case 9600: case 19200: case 38400: case 57600: #if 0 /* * Stock chips only support standard baud rates in the 600 - 57600 * range, but higher rates can be achieved using custom firmware. */ case 115200: case 153600: case 192000: #endif baud = t->c_ospeed; break; default: return (EINVAL); } if (t->c_cflag & CIGNORE) { cfg = sc->sc_cfg; } else { cfg = 0; switch (t->c_cflag & CSIZE) { case CS8: cfg |= UCYCOM_DATA_BITS_8; break; case CS7: cfg |= UCYCOM_DATA_BITS_7; break; case CS6: cfg |= UCYCOM_DATA_BITS_6; break; case CS5: cfg |= UCYCOM_DATA_BITS_5; break; default: return (EINVAL); } cfg |= ISSET(t->c_cflag, CSTOPB) ? UCYCOM_STOP_BITS_2 : UCYCOM_STOP_BITS_1; cfg |= ISSET(t->c_cflag, PARENB) ? UCYCOM_PARITY_ON : UCYCOM_PARITY_OFF; cfg |= ISSET(t->c_cflag, PARODD) ? UCYCOM_PARITY_ODD : UCYCOM_PARITY_EVEN; } DPRINTF(("ucycom_param: setting %d baud, %d-%c-%d (%d)\n", baud, 5 + (cfg & UCYCOM_DATA_MASK), (cfg & UCYCOM_PARITY_MASK) ? ((cfg & UCYCOM_PARITY_TYPE_MASK) ? 'O' : 'E') : 'N', (cfg & UCYCOM_STOP_MASK) ? 2 : 1, cfg)); report[0] = baud & 0xff; report[1] = (baud >> 8) & 0xff; report[2] = (baud >> 16) & 0xff; report[3] = (baud >> 24) & 0xff; report[4] = cfg; err = uhidev_set_report(&sc->sc_hdev, UHID_FEATURE_REPORT, report, sc->sc_flen); if (err != 0) { DPRINTF(("ucycom_param: uhidev_set_report %d %s\n", err, usbd_errstr(err))); return EIO; } sc->sc_baud = baud; return (err); } void ucycom_intr(struct uhidev *addr, void *ibuf, u_int len) { extern void ucomreadcb(usbd_xfer_handle, usbd_private_handle, usbd_status); struct ucycom_softc *sc = (struct ucycom_softc *)addr; uint8_t *cp = ibuf; int n, st, s; /* not accepting data anymore.. */ if (sc->sc_ibuf == NULL) return; /* We understand 8 byte and 32 byte input records */ switch (len) { case 8: n = cp[0] & UCYCOM_LMASK; st = cp[0] & ~UCYCOM_LMASK; cp++; break; case 32: st = cp[0]; n = cp[1]; cp += 2; break; default: DPRINTFN(3,("ucycom_intr: Unknown input report length\n")); return; } #ifdef UCYCOM_DEBUG if (ucycomdebug > 5) { u_int32_t i; if (n != 0) { DPRINTF(("ucycom_intr: ibuf[0..%d) =", n)); for (i = 0; i < n; i++) DPRINTF((" %02x", cp[i])); DPRINTF(("\n")); } } #endif if (n > 0 || st != sc->sc_msr) { s = spltty(); sc->sc_newmsr = st; bcopy(cp, sc->sc_ibuf, n); sc->sc_icnt = n; ucomreadcb(addr->sc_parent->sc_ixfer, sc->sc_subdev, USBD_NORMAL_COMPLETION); splx(s); } } void ucycom_set(void *addr, int portno, int reg, int onoff) { struct ucycom_softc *sc = addr; int err; switch (reg) { case UCOM_SET_DTR: if (onoff) SET(sc->sc_mcr, UCYCOM_DTR); else CLR(sc->sc_mcr, UCYCOM_DTR); break; case UCOM_SET_RTS: if (onoff) SET(sc->sc_mcr, UCYCOM_RTS); else CLR(sc->sc_mcr, UCYCOM_RTS); break; case UCOM_SET_BREAK: break; } memset(sc->sc_obuf, 0, sc->sc_olen); sc->sc_obuf[0] = sc->sc_mcr; err = uhidev_write(sc->sc_hdev.sc_parent, sc->sc_obuf, sc->sc_olen); if (err) DPRINTF(("ucycom_set_status: err=%d\n", err)); } void ucycom_get_cfg(struct ucycom_softc *sc) { int err, cfg, baud; uint8_t report[5]; err = uhidev_get_report(&sc->sc_hdev, UHID_FEATURE_REPORT, report, sc->sc_flen); cfg = report[4]; baud = (report[3] << 24) + (report[2] << 16) + (report[1] << 8) + report[0]; DPRINTF(("ucycom_configure: device reports %d baud, %d-%c-%d (%d)\n", baud, 5 + (cfg & UCYCOM_DATA_MASK), (cfg & UCYCOM_PARITY_MASK) ? ((cfg & UCYCOM_PARITY_TYPE_MASK) ? 'O' : 'E') : 'N', (cfg & UCYCOM_STOP_MASK) ? 2 : 1, cfg)); } int ucycom_detach(struct device *self, int flags) { struct ucycom_softc *sc = (struct ucycom_softc *)self; DPRINTF(("ucycom_detach: sc=%p flags=%d\n", sc, flags)); sc->sc_dying = 1; if (sc->sc_subdev != NULL) { config_detach(sc->sc_subdev, flags); sc->sc_subdev = NULL; } return (0); } int ucycom_activate(struct device *self, int act) { struct ucycom_softc *sc = (struct ucycom_softc *)self; int rv = 0; DPRINTFN(5,("ucycom_activate: %d\n", act)); switch (act) { case DVACT_ACTIVATE: break; case DVACT_DEACTIVATE: if (sc->sc_subdev != NULL) rv = config_deactivate(sc->sc_subdev); sc->sc_dying = 1; break; } return (rv); }