601 lines
14 KiB
C
601 lines
14 KiB
C
#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*-
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* Copyright (c) 2004 Dag-Erling Coïdan Smørgrav
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Device driver for Cypress CY7C637xx and CY7C640/1xx series USB to
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* RS232 bridges.
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*/
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#include <dev/usb2/include/usb2_devid.h>
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#include <dev/usb2/include/usb2_standard.h>
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#include <dev/usb2/include/usb2_mfunc.h>
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#include <dev/usb2/include/usb2_error.h>
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#include <dev/usb2/include/usb2_cdc.h>
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#include <dev/usb2/include/usb2_ioctl.h>
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#include <dev/usb2/include/usb2_hid.h>
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#define USB_DEBUG_VAR usb2_debug
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#include <dev/usb2/core/usb2_core.h>
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#include <dev/usb2/core/usb2_debug.h>
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#include <dev/usb2/core/usb2_process.h>
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#include <dev/usb2/core/usb2_request.h>
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#include <dev/usb2/core/usb2_lookup.h>
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#include <dev/usb2/core/usb2_util.h>
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#include <dev/usb2/core/usb2_busdma.h>
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#include <dev/usb2/core/usb2_hid.h>
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#include <dev/usb2/serial/usb2_serial.h>
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#define UCYCOM_MAX_IOLEN (1024 + 2) /* bytes */
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#define UCYCOM_IFACE_INDEX 0
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enum {
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UCYCOM_CTRL_RD,
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UCYCOM_INTR_RD,
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UCYCOM_INTR_CS,
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UCYCOM_N_TRANSFER = 3,
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};
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struct ucycom_softc {
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struct usb2_com_super_softc sc_super_ucom;
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struct usb2_com_softc sc_ucom;
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struct usb2_device *sc_udev;
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struct usb2_xfer *sc_xfer[UCYCOM_N_TRANSFER];
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uint32_t sc_model;
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#define MODEL_CY7C63743 0x63743
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#define MODEL_CY7C64013 0x64013
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uint16_t sc_flen; /* feature report length */
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uint16_t sc_ilen; /* input report length */
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uint16_t sc_olen; /* output report length */
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uint8_t sc_fid; /* feature report id */
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uint8_t sc_iid; /* input report id */
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uint8_t sc_oid; /* output report id */
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uint8_t sc_cfg;
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#define UCYCOM_CFG_RESET 0x80
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#define UCYCOM_CFG_PARODD 0x20
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#define UCYCOM_CFG_PAREN 0x10
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#define UCYCOM_CFG_STOPB 0x08
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#define UCYCOM_CFG_DATAB 0x03
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uint8_t sc_ist; /* status flags from last input */
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uint8_t sc_flags;
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#define UCYCOM_FLAG_INTR_STALL 0x01
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uint8_t sc_name[16];
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uint8_t sc_iface_no;
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uint8_t sc_temp_cfg[32];
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};
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/* prototypes */
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static device_probe_t ucycom_probe;
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static device_attach_t ucycom_attach;
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static device_detach_t ucycom_detach;
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static usb2_callback_t ucycom_ctrl_write_callback;
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static usb2_callback_t ucycom_intr_read_clear_stall_callback;
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static usb2_callback_t ucycom_intr_read_callback;
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static void ucycom_cfg_open(struct usb2_com_softc *);
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static void ucycom_start_read(struct usb2_com_softc *);
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static void ucycom_stop_read(struct usb2_com_softc *);
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static void ucycom_start_write(struct usb2_com_softc *);
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static void ucycom_stop_write(struct usb2_com_softc *);
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static void ucycom_cfg_write(struct ucycom_softc *, uint32_t, uint8_t);
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static int ucycom_pre_param(struct usb2_com_softc *, struct termios *);
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static void ucycom_cfg_param(struct usb2_com_softc *, struct termios *);
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static const struct usb2_config ucycom_config[UCYCOM_N_TRANSFER] = {
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[UCYCOM_CTRL_RD] = {
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.type = UE_CONTROL,
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.endpoint = 0x00, /* Control pipe */
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.direction = UE_DIR_ANY,
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.mh.bufsize = (sizeof(struct usb2_device_request) + UCYCOM_MAX_IOLEN),
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.mh.flags = {},
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.mh.callback = &ucycom_ctrl_write_callback,
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.mh.timeout = 1000, /* 1 second */
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},
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[UCYCOM_INTR_RD] = {
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.type = UE_INTERRUPT,
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.endpoint = UE_ADDR_ANY,
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.direction = UE_DIR_IN,
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.mh.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
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.mh.bufsize = UCYCOM_MAX_IOLEN,
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.mh.callback = &ucycom_intr_read_callback,
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},
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[UCYCOM_INTR_CS] = {
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.type = UE_CONTROL,
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.endpoint = 0x00, /* Control pipe */
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.direction = UE_DIR_ANY,
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.mh.bufsize = sizeof(struct usb2_device_request),
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.mh.flags = {},
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.mh.callback = &ucycom_intr_read_clear_stall_callback,
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.mh.timeout = 1000, /* 1 second */
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.mh.interval = 50, /* 50ms */
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},
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};
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static const struct usb2_com_callback ucycom_callback = {
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.usb2_com_cfg_param = &ucycom_cfg_param,
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.usb2_com_cfg_open = &ucycom_cfg_open,
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.usb2_com_pre_param = &ucycom_pre_param,
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.usb2_com_start_read = &ucycom_start_read,
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.usb2_com_stop_read = &ucycom_stop_read,
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.usb2_com_start_write = &ucycom_start_write,
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.usb2_com_stop_write = &ucycom_stop_write,
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};
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static device_method_t ucycom_methods[] = {
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DEVMETHOD(device_probe, ucycom_probe),
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DEVMETHOD(device_attach, ucycom_attach),
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DEVMETHOD(device_detach, ucycom_detach),
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{0, 0}
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};
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static devclass_t ucycom_devclass;
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static driver_t ucycom_driver = {
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.name = "ucycom",
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.methods = ucycom_methods,
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.size = sizeof(struct ucycom_softc),
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};
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DRIVER_MODULE(ucycom, ushub, ucycom_driver, ucycom_devclass, NULL, 0);
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MODULE_DEPEND(ucycom, usb2_serial, 1, 1, 1);
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MODULE_DEPEND(ucycom, usb2_core, 1, 1, 1);
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/*
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* Supported devices
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*/
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static const struct usb2_device_id ucycom_devs[] = {
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{USB_VPI(USB_VENDOR_DELORME, USB_PRODUCT_DELORME_EARTHMATE, MODEL_CY7C64013)},
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};
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#define UCYCOM_DEFAULT_RATE 4800
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#define UCYCOM_DEFAULT_CFG 0x03 /* N-8-1 */
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static int
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ucycom_probe(device_t dev)
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{
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struct usb2_attach_arg *uaa = device_get_ivars(dev);
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if (uaa->usb2_mode != USB_MODE_HOST) {
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return (ENXIO);
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}
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if (uaa->info.bConfigIndex != 0) {
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return (ENXIO);
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}
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if (uaa->info.bIfaceIndex != UCYCOM_IFACE_INDEX) {
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return (ENXIO);
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}
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return (usb2_lookup_id_by_uaa(ucycom_devs, sizeof(ucycom_devs), uaa));
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}
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static int
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ucycom_attach(device_t dev)
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{
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struct usb2_attach_arg *uaa = device_get_ivars(dev);
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struct ucycom_softc *sc = device_get_softc(dev);
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void *urd_ptr = NULL;
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int32_t error;
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uint16_t urd_len;
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uint8_t iface_index;
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sc->sc_udev = uaa->device;
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device_set_usb2_desc(dev);
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snprintf(sc->sc_name, sizeof(sc->sc_name),
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"%s", device_get_nameunit(dev));
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DPRINTF("\n");
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/* get chip model */
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sc->sc_model = USB_GET_DRIVER_INFO(uaa);
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if (sc->sc_model == 0) {
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device_printf(dev, "unsupported device\n");
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goto detach;
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}
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device_printf(dev, "Cypress CY7C%X USB to RS232 bridge\n", sc->sc_model);
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/* get report descriptor */
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error = usb2_req_get_hid_desc
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(uaa->device, &Giant,
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&urd_ptr, &urd_len, M_USBDEV,
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UCYCOM_IFACE_INDEX);
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if (error) {
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device_printf(dev, "failed to get report "
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"descriptor: %s\n",
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usb2_errstr(error));
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goto detach;
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}
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/* get report sizes */
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sc->sc_flen = hid_report_size(urd_ptr, urd_len, hid_feature, &sc->sc_fid);
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sc->sc_ilen = hid_report_size(urd_ptr, urd_len, hid_input, &sc->sc_iid);
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sc->sc_olen = hid_report_size(urd_ptr, urd_len, hid_output, &sc->sc_oid);
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if ((sc->sc_ilen > UCYCOM_MAX_IOLEN) || (sc->sc_ilen < 1) ||
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(sc->sc_olen > UCYCOM_MAX_IOLEN) || (sc->sc_olen < 2) ||
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(sc->sc_flen > UCYCOM_MAX_IOLEN) || (sc->sc_flen < 5)) {
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device_printf(dev, "invalid report size i=%d, o=%d, f=%d, max=%d\n",
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sc->sc_ilen, sc->sc_olen, sc->sc_flen,
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UCYCOM_MAX_IOLEN);
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goto detach;
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}
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sc->sc_iface_no = uaa->info.bIfaceNum;
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iface_index = UCYCOM_IFACE_INDEX;
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error = usb2_transfer_setup(uaa->device, &iface_index,
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sc->sc_xfer, ucycom_config, UCYCOM_N_TRANSFER,
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sc, &Giant);
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if (error) {
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device_printf(dev, "allocating USB "
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"transfers failed!\n");
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goto detach;
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}
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error = usb2_com_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
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&ucycom_callback, &Giant);
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if (error) {
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goto detach;
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}
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if (urd_ptr) {
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free(urd_ptr, M_USBDEV);
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}
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return (0); /* success */
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detach:
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if (urd_ptr) {
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free(urd_ptr, M_USBDEV);
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}
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ucycom_detach(dev);
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return (ENXIO);
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}
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static int
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ucycom_detach(device_t dev)
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{
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struct ucycom_softc *sc = device_get_softc(dev);
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usb2_com_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1);
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usb2_transfer_unsetup(sc->sc_xfer, UCYCOM_N_TRANSFER);
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return (0);
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}
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static void
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ucycom_cfg_open(struct usb2_com_softc *ucom)
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{
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struct ucycom_softc *sc = ucom->sc_parent;
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/* set default configuration */
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ucycom_cfg_write(sc, UCYCOM_DEFAULT_RATE, UCYCOM_DEFAULT_CFG);
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}
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static void
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ucycom_start_read(struct usb2_com_softc *ucom)
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{
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struct ucycom_softc *sc = ucom->sc_parent;
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usb2_transfer_start(sc->sc_xfer[UCYCOM_INTR_RD]);
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}
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static void
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ucycom_stop_read(struct usb2_com_softc *ucom)
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{
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struct ucycom_softc *sc = ucom->sc_parent;
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usb2_transfer_stop(sc->sc_xfer[UCYCOM_INTR_CS]);
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usb2_transfer_stop(sc->sc_xfer[UCYCOM_INTR_RD]);
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}
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static void
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ucycom_start_write(struct usb2_com_softc *ucom)
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{
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struct ucycom_softc *sc = ucom->sc_parent;
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usb2_transfer_start(sc->sc_xfer[UCYCOM_CTRL_RD]);
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}
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static void
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ucycom_stop_write(struct usb2_com_softc *ucom)
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{
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struct ucycom_softc *sc = ucom->sc_parent;
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usb2_transfer_stop(sc->sc_xfer[UCYCOM_CTRL_RD]);
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}
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static void
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ucycom_ctrl_write_callback(struct usb2_xfer *xfer)
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{
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struct ucycom_softc *sc = xfer->priv_sc;
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struct usb2_device_request req;
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uint8_t data[2];
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uint8_t offset;
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uint32_t actlen;
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switch (USB_GET_STATE(xfer)) {
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case USB_ST_TRANSFERRED:
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tr_transferred:
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case USB_ST_SETUP:
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switch (sc->sc_model) {
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case MODEL_CY7C63743:
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offset = 1;
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break;
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case MODEL_CY7C64013:
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offset = 2;
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break;
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default:
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offset = 0;
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break;
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}
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if (usb2_com_get_data(&sc->sc_ucom, xfer->frbuffers + 1, offset,
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sc->sc_olen - offset, &actlen)) {
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req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
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req.bRequest = UR_SET_REPORT;
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USETW2(req.wValue, UHID_OUTPUT_REPORT, sc->sc_oid);
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req.wIndex[0] = sc->sc_iface_no;
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req.wIndex[1] = 0;
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USETW(req.wLength, sc->sc_olen);
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switch (sc->sc_model) {
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case MODEL_CY7C63743:
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data[0] = actlen;
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break;
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case MODEL_CY7C64013:
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data[0] = 0;
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data[1] = actlen;
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break;
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default:
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break;
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}
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usb2_copy_in(xfer->frbuffers, 0, &req, sizeof(req));
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usb2_copy_in(xfer->frbuffers + 1, 0, data, offset);
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xfer->frlengths[0] = sizeof(req);
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xfer->frlengths[1] = sc->sc_olen;
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xfer->nframes = xfer->frlengths[1] ? 2 : 1;
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usb2_start_hardware(xfer);
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}
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return;
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default: /* Error */
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if (xfer->error == USB_ERR_CANCELLED) {
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return;
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}
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DPRINTF("error=%s\n",
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usb2_errstr(xfer->error));
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goto tr_transferred;
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}
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}
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static void
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ucycom_cfg_write(struct ucycom_softc *sc, uint32_t baud, uint8_t cfg)
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{
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struct usb2_device_request req;
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uint16_t len;
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usb2_error_t err;
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len = sc->sc_flen;
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if (len > sizeof(sc->sc_temp_cfg)) {
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len = sizeof(sc->sc_temp_cfg);
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}
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sc->sc_cfg = cfg;
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req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
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req.bRequest = UR_SET_REPORT;
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USETW2(req.wValue, UHID_FEATURE_REPORT, sc->sc_fid);
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req.wIndex[0] = sc->sc_iface_no;
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req.wIndex[1] = 0;
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USETW(req.wLength, len);
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sc->sc_temp_cfg[0] = (baud & 0xff);
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sc->sc_temp_cfg[1] = (baud >> 8) & 0xff;
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sc->sc_temp_cfg[2] = (baud >> 16) & 0xff;
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sc->sc_temp_cfg[3] = (baud >> 24) & 0xff;
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sc->sc_temp_cfg[4] = cfg;
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if (usb2_com_cfg_is_gone(&sc->sc_ucom)) {
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return;
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}
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err = usb2_do_request_flags
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(sc->sc_udev, &Giant, &req, sc->sc_temp_cfg, 0, NULL, 1000);
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if (err) {
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DPRINTFN(0, "device request failed, err=%s "
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"(ignored)\n", usb2_errstr(err));
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}
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}
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static int
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ucycom_pre_param(struct usb2_com_softc *ucom, struct termios *t)
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{
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switch (t->c_ospeed) {
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case 600:
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case 1200:
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case 2400:
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case 4800:
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case 9600:
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case 19200:
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case 38400:
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case 57600:
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#if 0
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/*
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* Stock chips only support standard baud rates in the 600 - 57600
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* range, but higher rates can be achieved using custom firmware.
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*/
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case 115200:
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case 153600:
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case 192000:
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#endif
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break;
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default:
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return (EINVAL);
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}
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return (0);
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}
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static void
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ucycom_cfg_param(struct usb2_com_softc *ucom, struct termios *t)
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{
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struct ucycom_softc *sc = ucom->sc_parent;
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uint8_t cfg;
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DPRINTF("\n");
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if (t->c_cflag & CIGNORE) {
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cfg = sc->sc_cfg;
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} else {
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cfg = 0;
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switch (t->c_cflag & CSIZE) {
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default:
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case CS8:
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++cfg;
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case CS7:
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++cfg;
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case CS6:
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++cfg;
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case CS5:
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break;
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}
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|
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if (t->c_cflag & CSTOPB)
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cfg |= UCYCOM_CFG_STOPB;
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if (t->c_cflag & PARENB)
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cfg |= UCYCOM_CFG_PAREN;
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if (t->c_cflag & PARODD)
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cfg |= UCYCOM_CFG_PARODD;
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}
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|
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ucycom_cfg_write(sc, t->c_ospeed, cfg);
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}
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|
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static void
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ucycom_intr_read_clear_stall_callback(struct usb2_xfer *xfer)
|
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{
|
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struct ucycom_softc *sc = xfer->priv_sc;
|
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struct usb2_xfer *xfer_other = sc->sc_xfer[UCYCOM_INTR_RD];
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|
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if (usb2_clear_stall_callback(xfer, xfer_other)) {
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DPRINTF("stall cleared\n");
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sc->sc_flags &= ~UCYCOM_FLAG_INTR_STALL;
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usb2_transfer_start(xfer_other);
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}
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}
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|
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static void
|
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ucycom_intr_read_callback(struct usb2_xfer *xfer)
|
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{
|
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struct ucycom_softc *sc = xfer->priv_sc;
|
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uint8_t buf[2];
|
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uint32_t offset;
|
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uint32_t len;
|
|
|
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switch (USB_GET_STATE(xfer)) {
|
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case USB_ST_TRANSFERRED:
|
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switch (sc->sc_model) {
|
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case MODEL_CY7C63743:
|
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if (xfer->actlen < 1) {
|
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goto tr_setup;
|
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}
|
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usb2_copy_out(xfer->frbuffers, 0, buf, 1);
|
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|
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sc->sc_ist = buf[0] & ~0x07;
|
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len = buf[0] & 0x07;
|
|
|
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(xfer->actlen)--;
|
|
|
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offset = 1;
|
|
|
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break;
|
|
|
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case MODEL_CY7C64013:
|
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if (xfer->actlen < 2) {
|
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goto tr_setup;
|
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}
|
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usb2_copy_out(xfer->frbuffers, 0, buf, 2);
|
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|
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sc->sc_ist = buf[0] & ~0x07;
|
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len = buf[1];
|
|
|
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(xfer->actlen) -= 2;
|
|
|
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offset = 2;
|
|
|
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break;
|
|
|
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default:
|
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DPRINTFN(0, "unsupported model number!\n");
|
|
goto tr_setup;
|
|
}
|
|
|
|
if (len > xfer->actlen) {
|
|
len = xfer->actlen;
|
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}
|
|
if (len) {
|
|
usb2_com_put_data(&sc->sc_ucom, xfer->frbuffers,
|
|
offset, len);
|
|
}
|
|
case USB_ST_SETUP:
|
|
tr_setup:
|
|
if (sc->sc_flags & UCYCOM_FLAG_INTR_STALL) {
|
|
usb2_transfer_start(sc->sc_xfer[UCYCOM_INTR_CS]);
|
|
} else {
|
|
xfer->frlengths[0] = sc->sc_ilen;
|
|
usb2_start_hardware(xfer);
|
|
}
|
|
return;
|
|
|
|
default: /* Error */
|
|
if (xfer->error != USB_ERR_CANCELLED) {
|
|
sc->sc_flags |= UCYCOM_FLAG_INTR_STALL;
|
|
usb2_transfer_start(sc->sc_xfer[UCYCOM_INTR_CS]);
|
|
}
|
|
return;
|
|
|
|
}
|
|
}
|