diff options
Diffstat (limited to 'sys/dev/usb/serial/uvisor.c')
| -rw-r--r-- | sys/dev/usb/serial/uvisor.c | 610 |
1 files changed, 610 insertions, 0 deletions
diff --git a/sys/dev/usb/serial/uvisor.c b/sys/dev/usb/serial/uvisor.c new file mode 100644 index 0000000..854f972 --- /dev/null +++ b/sys/dev/usb/serial/uvisor.c @@ -0,0 +1,610 @@ +/* $NetBSD: uvisor.c,v 1.9 2001/01/23 14:04:14 augustss Exp $ */ +/* $FreeBSD$ */ + +/* Also already merged from NetBSD: + * $NetBSD: uvisor.c,v 1.12 2001/11/13 06:24:57 lukem Exp $ + * $NetBSD: uvisor.c,v 1.13 2002/02/11 15:11:49 augustss Exp $ + * $NetBSD: uvisor.c,v 1.14 2002/02/27 23:00:03 augustss Exp $ + * $NetBSD: uvisor.c,v 1.15 2002/06/16 15:01:31 augustss Exp $ + * $NetBSD: uvisor.c,v 1.16 2002/07/11 21:14:36 augustss Exp $ + * $NetBSD: uvisor.c,v 1.17 2002/08/13 11:38:15 augustss Exp $ + * $NetBSD: uvisor.c,v 1.18 2003/02/05 00:50:14 augustss Exp $ + * $NetBSD: uvisor.c,v 1.19 2003/02/07 18:12:37 augustss Exp $ + * $NetBSD: uvisor.c,v 1.20 2003/04/11 01:30:10 simonb Exp $ + */ + +/*- + * Copyright (c) 2000 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Lennart Augustsson (lennart@augustsson.net) at + * Carlstedt Research & Technology. + * + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 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. + */ + +/* + * Handspring Visor (Palmpilot compatible PDA) driver + */ + +#include "usbdevs.h" +#include <dev/usb/usb.h> +#include <dev/usb/usb_mfunc.h> +#include <dev/usb/usb_error.h> +#include <dev/usb/usb_cdc.h> +#include <dev/usb/usb_ioctl.h> + +#define USB_DEBUG_VAR uvisor_debug + +#include <dev/usb/usb_core.h> +#include <dev/usb/usb_debug.h> +#include <dev/usb/usb_process.h> +#include <dev/usb/usb_request.h> +#include <dev/usb/usb_lookup.h> +#include <dev/usb/usb_util.h> +#include <dev/usb/usb_busdma.h> + +#include <dev/usb/serial/usb_serial.h> + +#if USB_DEBUG +static int uvisor_debug = 0; + +SYSCTL_NODE(_hw_usb2, OID_AUTO, uvisor, CTLFLAG_RW, 0, "USB uvisor"); +SYSCTL_INT(_hw_usb2_uvisor, OID_AUTO, debug, CTLFLAG_RW, + &uvisor_debug, 0, "Debug level"); +#endif + +#define UVISOR_CONFIG_INDEX 0 +#define UVISOR_IFACE_INDEX 0 +#define UVISOR_BUFSIZE 1024 /* bytes */ + +/* From the Linux driver */ +/* + * UVISOR_REQUEST_BYTES_AVAILABLE asks the visor for the number of bytes that + * are available to be transfered to the host for the specified endpoint. + * Currently this is not used, and always returns 0x0001 + */ +#define UVISOR_REQUEST_BYTES_AVAILABLE 0x01 + +/* + * UVISOR_CLOSE_NOTIFICATION is set to the device to notify it that the host + * is now closing the pipe. An empty packet is sent in response. + */ +#define UVISOR_CLOSE_NOTIFICATION 0x02 + +/* + * UVISOR_GET_CONNECTION_INFORMATION is sent by the host during enumeration to + * get the endpoints used by the connection. + */ +#define UVISOR_GET_CONNECTION_INFORMATION 0x03 + +/* + * UVISOR_GET_CONNECTION_INFORMATION returns data in the following format + */ +#define UVISOR_MAX_CONN 8 +struct uvisor_connection_info { + uWord num_ports; + struct { + uByte port_function_id; + uByte port; + } __packed connections[UVISOR_MAX_CONN]; +} __packed; + +#define UVISOR_CONNECTION_INFO_SIZE 18 + +/* struct uvisor_connection_info.connection[x].port defines: */ +#define UVISOR_ENDPOINT_1 0x01 +#define UVISOR_ENDPOINT_2 0x02 + +/* struct uvisor_connection_info.connection[x].port_function_id defines: */ +#define UVISOR_FUNCTION_GENERIC 0x00 +#define UVISOR_FUNCTION_DEBUGGER 0x01 +#define UVISOR_FUNCTION_HOTSYNC 0x02 +#define UVISOR_FUNCTION_CONSOLE 0x03 +#define UVISOR_FUNCTION_REMOTE_FILE_SYS 0x04 + +/* + * Unknown PalmOS stuff. + */ +#define UVISOR_GET_PALM_INFORMATION 0x04 +#define UVISOR_GET_PALM_INFORMATION_LEN 0x44 + +struct uvisor_palm_connection_info { + uByte num_ports; + uByte endpoint_numbers_different; + uWord reserved1; + struct { + uDWord port_function_id; + uByte port; + uByte end_point_info; + uWord reserved; + } __packed connections[UVISOR_MAX_CONN]; +} __packed; + +enum { + UVISOR_BULK_DT_WR, + UVISOR_BULK_DT_RD, + UVISOR_N_TRANSFER, +}; + +struct uvisor_softc { + struct usb2_com_super_softc sc_super_ucom; + struct usb2_com_softc sc_ucom; + + struct usb2_xfer *sc_xfer[UVISOR_N_TRANSFER]; + struct usb2_device *sc_udev; + + uint16_t sc_flag; +#define UVISOR_FLAG_PALM4 0x0001 +#define UVISOR_FLAG_VISOR 0x0002 +#define UVISOR_FLAG_PALM35 0x0004 +#define UVISOR_FLAG_SEND_NOTIFY 0x0008 + + uint8_t sc_iface_no; + uint8_t sc_iface_index; +}; + +/* prototypes */ + +static device_probe_t uvisor_probe; +static device_attach_t uvisor_attach; +static device_detach_t uvisor_detach; + +static usb2_callback_t uvisor_write_callback; +static usb2_callback_t uvisor_read_callback; + +static usb2_error_t uvisor_init(struct uvisor_softc *, struct usb2_device *, + struct usb2_config *); +static void uvisor_cfg_open(struct usb2_com_softc *); +static void uvisor_cfg_close(struct usb2_com_softc *); +static void uvisor_start_read(struct usb2_com_softc *); +static void uvisor_stop_read(struct usb2_com_softc *); +static void uvisor_start_write(struct usb2_com_softc *); +static void uvisor_stop_write(struct usb2_com_softc *); + +static const struct usb2_config uvisor_config[UVISOR_N_TRANSFER] = { + + [UVISOR_BULK_DT_WR] = { + .type = UE_BULK, + .endpoint = UE_ADDR_ANY, + .direction = UE_DIR_OUT, + .mh.bufsize = UVISOR_BUFSIZE, /* bytes */ + .mh.flags = {.pipe_bof = 1,.force_short_xfer = 1,}, + .mh.callback = &uvisor_write_callback, + }, + + [UVISOR_BULK_DT_RD] = { + .type = UE_BULK, + .endpoint = UE_ADDR_ANY, + .direction = UE_DIR_IN, + .mh.bufsize = UVISOR_BUFSIZE, /* bytes */ + .mh.flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, + .mh.callback = &uvisor_read_callback, + }, +}; + +static const struct usb2_com_callback uvisor_callback = { + .usb2_com_cfg_open = &uvisor_cfg_open, + .usb2_com_cfg_close = &uvisor_cfg_close, + .usb2_com_start_read = &uvisor_start_read, + .usb2_com_stop_read = &uvisor_stop_read, + .usb2_com_start_write = &uvisor_start_write, + .usb2_com_stop_write = &uvisor_stop_write, +}; + +static device_method_t uvisor_methods[] = { + DEVMETHOD(device_probe, uvisor_probe), + DEVMETHOD(device_attach, uvisor_attach), + DEVMETHOD(device_detach, uvisor_detach), + {0, 0} +}; + +static devclass_t uvisor_devclass; + +static driver_t uvisor_driver = { + .name = "uvisor", + .methods = uvisor_methods, + .size = sizeof(struct uvisor_softc), +}; + +DRIVER_MODULE(uvisor, ushub, uvisor_driver, uvisor_devclass, NULL, 0); +MODULE_DEPEND(uvisor, ucom, 1, 1, 1); +MODULE_DEPEND(uvisor, usb, 1, 1, 1); + +static const struct usb2_device_id uvisor_devs[] = { + {USB_VPI(USB_VENDOR_ACEECA, USB_PRODUCT_ACEECA_MEZ1000, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_GARMIN, USB_PRODUCT_GARMIN_IQUE_3600, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_FOSSIL, USB_PRODUCT_FOSSIL_WRISTPDA, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_HANDSPRING, USB_PRODUCT_HANDSPRING_VISOR, UVISOR_FLAG_VISOR)}, + {USB_VPI(USB_VENDOR_HANDSPRING, USB_PRODUCT_HANDSPRING_TREO, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_HANDSPRING, USB_PRODUCT_HANDSPRING_TREO600, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_PALM, USB_PRODUCT_PALM_M500, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_PALM, USB_PRODUCT_PALM_M505, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_PALM, USB_PRODUCT_PALM_M515, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_PALM, USB_PRODUCT_PALM_I705, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_PALM, USB_PRODUCT_PALM_M125, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_PALM, USB_PRODUCT_PALM_M130, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_PALM, USB_PRODUCT_PALM_TUNGSTEN_Z, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_PALM, USB_PRODUCT_PALM_TUNGSTEN_T, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_PALM, USB_PRODUCT_PALM_ZIRE, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_PALM, USB_PRODUCT_PALM_ZIRE31, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_SAMSUNG, USB_PRODUCT_SAMSUNG_I500, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_SONY, USB_PRODUCT_SONY_CLIE_40, 0)}, + {USB_VPI(USB_VENDOR_SONY, USB_PRODUCT_SONY_CLIE_41, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_SONY, USB_PRODUCT_SONY_CLIE_S360, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_SONY, USB_PRODUCT_SONY_CLIE_NX60, UVISOR_FLAG_PALM4)}, + {USB_VPI(USB_VENDOR_SONY, USB_PRODUCT_SONY_CLIE_35, UVISOR_FLAG_PALM35)}, +/* {USB_VPI(USB_VENDOR_SONY, USB_PRODUCT_SONY_CLIE_25, UVISOR_FLAG_PALM4 )}, */ + {USB_VPI(USB_VENDOR_SONY, USB_PRODUCT_SONY_CLIE_TJ37, UVISOR_FLAG_PALM4)}, +/* {USB_VPI(USB_VENDOR_SONY, USB_PRODUCT_SONY_CLIE_TH55, UVISOR_FLAG_PALM4 )}, See PR 80935 */ + {USB_VPI(USB_VENDOR_TAPWAVE, USB_PRODUCT_TAPWAVE_ZODIAC, UVISOR_FLAG_PALM4)}, +}; + +static int +uvisor_probe(device_t dev) +{ + struct usb2_attach_arg *uaa = device_get_ivars(dev); + + if (uaa->usb2_mode != USB_MODE_HOST) { + return (ENXIO); + } + if (uaa->info.bConfigIndex != UVISOR_CONFIG_INDEX) { + return (ENXIO); + } + if (uaa->info.bIfaceIndex != UVISOR_IFACE_INDEX) { + return (ENXIO); + } + return (usb2_lookup_id_by_uaa(uvisor_devs, sizeof(uvisor_devs), uaa)); +} + +static int +uvisor_attach(device_t dev) +{ + struct usb2_attach_arg *uaa = device_get_ivars(dev); + struct uvisor_softc *sc = device_get_softc(dev); + struct usb2_config uvisor_config_copy[UVISOR_N_TRANSFER]; + int error; + + DPRINTF("sc=%p\n", sc); + bcopy(uvisor_config, uvisor_config_copy, + sizeof(uvisor_config_copy)); + device_set_usb2_desc(dev); + + sc->sc_udev = uaa->device; + + /* configure the device */ + + sc->sc_flag = USB_GET_DRIVER_INFO(uaa); + sc->sc_iface_no = uaa->info.bIfaceNum; + sc->sc_iface_index = UVISOR_IFACE_INDEX; + + error = uvisor_init(sc, uaa->device, uvisor_config_copy); + + if (error) { + DPRINTF("init failed, error=%s\n", + usb2_errstr(error)); + goto detach; + } + error = usb2_transfer_setup(uaa->device, &sc->sc_iface_index, + sc->sc_xfer, uvisor_config_copy, UVISOR_N_TRANSFER, + sc, &Giant); + if (error) { + DPRINTF("could not allocate all pipes\n"); + goto detach; + } + /* clear stall at first run */ + usb2_transfer_set_stall(sc->sc_xfer[UVISOR_BULK_DT_WR]); + usb2_transfer_set_stall(sc->sc_xfer[UVISOR_BULK_DT_RD]); + + error = usb2_com_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, + &uvisor_callback, &Giant); + if (error) { + DPRINTF("usb2_com_attach failed\n"); + goto detach; + } + return (0); + +detach: + uvisor_detach(dev); + return (ENXIO); +} + +static int +uvisor_detach(device_t dev) +{ + struct uvisor_softc *sc = device_get_softc(dev); + + DPRINTF("sc=%p\n", sc); + + usb2_com_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1); + + usb2_transfer_unsetup(sc->sc_xfer, UVISOR_N_TRANSFER); + + return (0); +} + +static usb2_error_t +uvisor_init(struct uvisor_softc *sc, struct usb2_device *udev, struct usb2_config *config) +{ + usb2_error_t err = 0; + struct usb2_device_request req; + struct uvisor_connection_info coninfo; + struct uvisor_palm_connection_info pconinfo; + uint16_t actlen; + uWord wAvail; + uint8_t buffer[256]; + + if (sc->sc_flag & UVISOR_FLAG_VISOR) { + DPRINTF("getting connection info\n"); + req.bmRequestType = UT_READ_VENDOR_ENDPOINT; + req.bRequest = UVISOR_GET_CONNECTION_INFORMATION; + USETW(req.wValue, 0); + USETW(req.wIndex, 0); + USETW(req.wLength, UVISOR_CONNECTION_INFO_SIZE); + err = usb2_do_request_flags + (udev, &Giant, &req, &coninfo, USB_SHORT_XFER_OK, + &actlen, USB_DEFAULT_TIMEOUT); + + if (err) { + goto done; + } + } +#if USB_DEBUG + if (sc->sc_flag & UVISOR_FLAG_VISOR) { + uint16_t i, np; + const char *desc; + + np = UGETW(coninfo.num_ports); + if (np > UVISOR_MAX_CONN) { + np = UVISOR_MAX_CONN; + } + DPRINTF("Number of ports: %d\n", np); + + for (i = 0; i < np; ++i) { + switch (coninfo.connections[i].port_function_id) { + case UVISOR_FUNCTION_GENERIC: + desc = "Generic"; + break; + case UVISOR_FUNCTION_DEBUGGER: + desc = "Debugger"; + break; + case UVISOR_FUNCTION_HOTSYNC: + desc = "HotSync"; + break; + case UVISOR_FUNCTION_REMOTE_FILE_SYS: + desc = "Remote File System"; + break; + default: + desc = "unknown"; + break; + } + DPRINTF("Port %d is for %s\n", + coninfo.connections[i].port, desc); + } + } +#endif + + if (sc->sc_flag & UVISOR_FLAG_PALM4) { + uint8_t port; + + /* Palm OS 4.0 Hack */ + req.bmRequestType = UT_READ_VENDOR_ENDPOINT; + req.bRequest = UVISOR_GET_PALM_INFORMATION; + USETW(req.wValue, 0); + USETW(req.wIndex, 0); + USETW(req.wLength, UVISOR_GET_PALM_INFORMATION_LEN); + + err = usb2_do_request_flags + (udev, &Giant, &req, &pconinfo, USB_SHORT_XFER_OK, + &actlen, USB_DEFAULT_TIMEOUT); + + if (err) { + goto done; + } + if (actlen < 12) { + DPRINTF("too little data\n"); + err = USB_ERR_INVAL; + goto done; + } + if (pconinfo.endpoint_numbers_different) { + port = pconinfo.connections[0].end_point_info; + config[0].endpoint = (port & 0xF); /* output */ + config[1].endpoint = (port >> 4); /* input */ + } else { + port = pconinfo.connections[0].port; + config[0].endpoint = (port & 0xF); /* output */ + config[1].endpoint = (port & 0xF); /* input */ + } +#if 0 + req.bmRequestType = UT_READ_VENDOR_ENDPOINT; + req.bRequest = UVISOR_GET_PALM_INFORMATION; + USETW(req.wValue, 0); + USETW(req.wIndex, 0); + USETW(req.wLength, UVISOR_GET_PALM_INFORMATION_LEN); + err = usb2_do_request(udev, &req, buffer); + if (err) { + goto done; + } +#endif + } + if (sc->sc_flag & UVISOR_FLAG_PALM35) { + /* get the config number */ + DPRINTF("getting config info\n"); + req.bmRequestType = UT_READ; + req.bRequest = UR_GET_CONFIG; + USETW(req.wValue, 0); + USETW(req.wIndex, 0); + USETW(req.wLength, 1); + + err = usb2_do_request(udev, &Giant, &req, buffer); + if (err) { + goto done; + } + /* get the interface number */ + DPRINTF("get the interface number\n"); + req.bmRequestType = UT_READ_DEVICE; + req.bRequest = UR_GET_INTERFACE; + USETW(req.wValue, 0); + USETW(req.wIndex, 0); + USETW(req.wLength, 1); + err = usb2_do_request(udev, &Giant, &req, buffer); + if (err) { + goto done; + } + } + DPRINTF("getting available bytes\n"); + req.bmRequestType = UT_READ_VENDOR_ENDPOINT; + req.bRequest = UVISOR_REQUEST_BYTES_AVAILABLE; + USETW(req.wValue, 0); + USETW(req.wIndex, 5); + USETW(req.wLength, sizeof(wAvail)); + err = usb2_do_request(udev, &Giant, &req, &wAvail); + if (err) { + goto done; + } + DPRINTF("avail=%d\n", UGETW(wAvail)); + + DPRINTF("done\n"); +done: + return (err); +} + +static void +uvisor_cfg_open(struct usb2_com_softc *ucom) +{ + return; +} + +static void +uvisor_cfg_close(struct usb2_com_softc *ucom) +{ + struct uvisor_softc *sc = ucom->sc_parent; + uint8_t buffer[UVISOR_CONNECTION_INFO_SIZE]; + struct usb2_device_request req; + usb2_error_t err; + + req.bmRequestType = UT_READ_VENDOR_ENDPOINT; /* XXX read? */ + req.bRequest = UVISOR_CLOSE_NOTIFICATION; + USETW(req.wValue, 0); + USETW(req.wIndex, 0); + USETW(req.wLength, UVISOR_CONNECTION_INFO_SIZE); + + err = usb2_com_cfg_do_request(sc->sc_udev, &sc->sc_ucom, + &req, buffer, 0, 1000); + if (err) { + DPRINTFN(0, "close notification failed, error=%s\n", + usb2_errstr(err)); + } +} + +static void +uvisor_start_read(struct usb2_com_softc *ucom) +{ + struct uvisor_softc *sc = ucom->sc_parent; + + usb2_transfer_start(sc->sc_xfer[UVISOR_BULK_DT_RD]); +} + +static void +uvisor_stop_read(struct usb2_com_softc *ucom) +{ + struct uvisor_softc *sc = ucom->sc_parent; + + usb2_transfer_stop(sc->sc_xfer[UVISOR_BULK_DT_RD]); +} + +static void +uvisor_start_write(struct usb2_com_softc *ucom) +{ + struct uvisor_softc *sc = ucom->sc_parent; + + usb2_transfer_start(sc->sc_xfer[UVISOR_BULK_DT_WR]); +} + +static void +uvisor_stop_write(struct usb2_com_softc *ucom) +{ + struct uvisor_softc *sc = ucom->sc_parent; + + usb2_transfer_stop(sc->sc_xfer[UVISOR_BULK_DT_WR]); +} + +static void +uvisor_write_callback(struct usb2_xfer *xfer) +{ + struct uvisor_softc *sc = xfer->priv_sc; + uint32_t actlen; + + switch (USB_GET_STATE(xfer)) { + case USB_ST_SETUP: + case USB_ST_TRANSFERRED: +tr_setup: + if (usb2_com_get_data(&sc->sc_ucom, xfer->frbuffers, 0, + UVISOR_BUFSIZE, &actlen)) { + + xfer->frlengths[0] = actlen; + usb2_start_hardware(xfer); + } + return; + + default: /* Error */ + if (xfer->error != USB_ERR_CANCELLED) { + /* try to clear stall first */ + xfer->flags.stall_pipe = 1; + goto tr_setup; + } + return; + } +} + +static void +uvisor_read_callback(struct usb2_xfer *xfer) +{ + struct uvisor_softc *sc = xfer->priv_sc; + + switch (USB_GET_STATE(xfer)) { + case USB_ST_TRANSFERRED: + usb2_com_put_data(&sc->sc_ucom, xfer->frbuffers, 0, xfer->actlen); + + case USB_ST_SETUP: +tr_setup: + xfer->frlengths[0] = xfer->max_data_length; + usb2_start_hardware(xfer); + return; + + default: /* Error */ + if (xfer->error != USB_ERR_CANCELLED) { + /* try to clear stall first */ + xfer->flags.stall_pipe = 1; + goto tr_setup; + } + return; + } +} |
