/* $NetBSD: ulpt.c,v 1.60 2003/10/04 21:19:50 augustss Exp $ */ /*- * Copyright (c) 1998, 2003 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. * * 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. */ /* * Printer Class spec: http://www.usb.org/developers/data/devclass/usbprint109.PDF * Printer Class spec: http://www.usb.org/developers/devclass_docs/usbprint11.pdf */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "usbdevs.h" #define USB_DEBUG_VAR ulpt_debug #include #include #ifdef USB_DEBUG static int ulpt_debug = 0; static SYSCTL_NODE(_hw_usb, OID_AUTO, ulpt, CTLFLAG_RW, 0, "USB ulpt"); SYSCTL_INT(_hw_usb_ulpt, OID_AUTO, debug, CTLFLAG_RW, &ulpt_debug, 0, "Debug level"); #endif #define ULPT_BSIZE (1<<15) /* bytes */ #define ULPT_IFQ_MAXLEN 2 /* units */ #define UR_GET_DEVICE_ID 0x00 #define UR_GET_PORT_STATUS 0x01 #define UR_SOFT_RESET 0x02 #define LPS_NERR 0x08 /* printer no error */ #define LPS_SELECT 0x10 /* printer selected */ #define LPS_NOPAPER 0x20 /* printer out of paper */ #define LPS_INVERT (LPS_SELECT|LPS_NERR) #define LPS_MASK (LPS_SELECT|LPS_NERR|LPS_NOPAPER) enum { ULPT_BULK_DT_WR, ULPT_BULK_DT_RD, ULPT_INTR_DT_RD, ULPT_N_TRANSFER, }; struct ulpt_softc { struct usb_fifo_sc sc_fifo; struct usb_fifo_sc sc_fifo_noreset; struct lock sc_lock; struct usb_callout sc_watchdog; device_t sc_dev; struct usb_device *sc_udev; struct usb_fifo *sc_fifo_open[2]; struct usb_xfer *sc_xfer[ULPT_N_TRANSFER]; int sc_fflags; /* current open flags, FREAD and * FWRITE */ uint8_t sc_iface_no; uint8_t sc_last_status; uint8_t sc_zlps; /* number of consequtive zero length * packets received */ }; /* prototypes */ static device_probe_t ulpt_probe; static device_attach_t ulpt_attach; static device_detach_t ulpt_detach; static usb_callback_t ulpt_write_callback; static usb_callback_t ulpt_read_callback; static usb_callback_t ulpt_status_callback; static void ulpt_reset(struct ulpt_softc *); static void ulpt_watchdog(void *); static usb_fifo_close_t ulpt_close; static usb_fifo_cmd_t ulpt_start_read; static usb_fifo_cmd_t ulpt_start_write; static usb_fifo_cmd_t ulpt_stop_read; static usb_fifo_cmd_t ulpt_stop_write; static usb_fifo_ioctl_t ulpt_ioctl; static usb_fifo_open_t ulpt_open; static usb_fifo_open_t unlpt_open; static struct usb_fifo_methods ulpt_fifo_methods = { .f_close = &ulpt_close, .f_ioctl = &ulpt_ioctl, .f_open = &ulpt_open, .f_start_read = &ulpt_start_read, .f_start_write = &ulpt_start_write, .f_stop_read = &ulpt_stop_read, .f_stop_write = &ulpt_stop_write, .basename[0] = "ulpt", }; static struct usb_fifo_methods unlpt_fifo_methods = { .f_close = &ulpt_close, .f_ioctl = &ulpt_ioctl, .f_open = &unlpt_open, .f_start_read = &ulpt_start_read, .f_start_write = &ulpt_start_write, .f_stop_read = &ulpt_stop_read, .f_stop_write = &ulpt_stop_write, .basename[0] = "unlpt", }; static void ulpt_reset(struct ulpt_softc *sc) { struct usb_device_request req; DPRINTFN(2, "\n"); req.bRequest = UR_SOFT_RESET; USETW(req.wValue, 0); USETW(req.wIndex, sc->sc_iface_no); USETW(req.wLength, 0); /* * There was a mistake in the USB printer 1.0 spec that gave the * request type as UT_WRITE_CLASS_OTHER; it should have been * UT_WRITE_CLASS_INTERFACE. Many printers use the old one, * so we try both. */ lockmgr(&sc->sc_lock, LK_EXCLUSIVE); req.bmRequestType = UT_WRITE_CLASS_OTHER; if (usbd_do_request_flags(sc->sc_udev, &sc->sc_lock, &req, NULL, 0, NULL, 2 * USB_MS_HZ)) { /* 1.0 */ req.bmRequestType = UT_WRITE_CLASS_INTERFACE; if (usbd_do_request_flags(sc->sc_udev, &sc->sc_lock, &req, NULL, 0, NULL, 2 * USB_MS_HZ)) { /* 1.1 */ /* ignore error */ } } lockmgr(&sc->sc_lock, LK_RELEASE); } static void ulpt_write_callback(struct usb_xfer *xfer, usb_error_t error) { struct ulpt_softc *sc = usbd_xfer_softc(xfer); struct usb_fifo *f = sc->sc_fifo_open[USB_FIFO_TX]; struct usb_page_cache *pc; int actlen, max; usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); if (f == NULL) { /* should not happen */ DPRINTF("no FIFO\n"); return; } DPRINTF("state=0x%x actlen=%d\n", USB_GET_STATE(xfer), actlen); switch (USB_GET_STATE(xfer)) { case USB_ST_TRANSFERRED: case USB_ST_SETUP: tr_setup: pc = usbd_xfer_get_frame(xfer, 0); max = usbd_xfer_max_len(xfer); if (usb_fifo_get_data(f, pc, 0, max, &actlen, 0)) { usbd_xfer_set_frame_len(xfer, 0, actlen); usbd_transfer_submit(xfer); } break; default: /* Error */ if (error != USB_ERR_CANCELLED) { /* try to clear stall first */ usbd_xfer_set_stall(xfer); goto tr_setup; } break; } } static void ulpt_read_callback(struct usb_xfer *xfer, usb_error_t error) { struct ulpt_softc *sc = usbd_xfer_softc(xfer); struct usb_fifo *f = sc->sc_fifo_open[USB_FIFO_RX]; struct usb_page_cache *pc; int actlen; usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); if (f == NULL) { /* should not happen */ DPRINTF("no FIFO\n"); return; } DPRINTF("state=0x%x\n", USB_GET_STATE(xfer)); switch (USB_GET_STATE(xfer)) { case USB_ST_TRANSFERRED: if (actlen == 0) { if (sc->sc_zlps == 4) { /* enable BULK throttle */ usbd_xfer_set_interval(xfer, 500); /* ms */ } else { sc->sc_zlps++; } } else { /* disable BULK throttle */ usbd_xfer_set_interval(xfer, 0); sc->sc_zlps = 0; } pc = usbd_xfer_get_frame(xfer, 0); usb_fifo_put_data(f, pc, 0, actlen, 1); case USB_ST_SETUP: tr_setup: if (usb_fifo_put_bytes_max(f) != 0) { usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); usbd_transfer_submit(xfer); } break; default: /* Error */ /* disable BULK throttle */ usbd_xfer_set_interval(xfer, 0); sc->sc_zlps = 0; if (error != USB_ERR_CANCELLED) { /* try to clear stall first */ usbd_xfer_set_stall(xfer); goto tr_setup; } break; } } static void ulpt_status_callback(struct usb_xfer *xfer, usb_error_t error) { struct ulpt_softc *sc = usbd_xfer_softc(xfer); struct usb_device_request req; struct usb_page_cache *pc; uint8_t cur_status; uint8_t new_status; switch (USB_GET_STATE(xfer)) { case USB_ST_TRANSFERRED: pc = usbd_xfer_get_frame(xfer, 1); usbd_copy_out(pc, 0, &cur_status, 1); cur_status = (cur_status ^ LPS_INVERT) & LPS_MASK; new_status = cur_status & ~sc->sc_last_status; sc->sc_last_status = cur_status; if (new_status & LPS_SELECT) log(LOG_NOTICE, "%s: offline\n", device_get_nameunit(sc->sc_dev)); else if (new_status & LPS_NOPAPER) log(LOG_NOTICE, "%s: out of paper\n", device_get_nameunit(sc->sc_dev)); else if (new_status & LPS_NERR) log(LOG_NOTICE, "%s: output error\n", device_get_nameunit(sc->sc_dev)); break; case USB_ST_SETUP: req.bmRequestType = UT_READ_CLASS_INTERFACE; req.bRequest = UR_GET_PORT_STATUS; USETW(req.wValue, 0); req.wIndex[0] = sc->sc_iface_no; req.wIndex[1] = 0; USETW(req.wLength, 1); pc = usbd_xfer_get_frame(xfer, 0); usbd_copy_in(pc, 0, &req, sizeof(req)); usbd_xfer_set_frame_len(xfer, 0, sizeof(req)); usbd_xfer_set_frame_len(xfer, 1, 1); usbd_xfer_set_frames(xfer, 2); usbd_transfer_submit(xfer); break; default: /* Error */ DPRINTF("error=%s\n", usbd_errstr(error)); if (error != USB_ERR_CANCELLED) { /* wait for next watchdog timeout */ } break; } } static const struct usb_config ulpt_config[ULPT_N_TRANSFER] = { [ULPT_BULK_DT_WR] = { .type = UE_BULK, .endpoint = UE_ADDR_ANY, .direction = UE_DIR_OUT, .bufsize = ULPT_BSIZE, .flags = {.pipe_bof = 1,.proxy_buffer = 1}, .callback = &ulpt_write_callback, }, [ULPT_BULK_DT_RD] = { .type = UE_BULK, .endpoint = UE_ADDR_ANY, .direction = UE_DIR_IN, .bufsize = ULPT_BSIZE, .flags = {.pipe_bof = 1,.short_xfer_ok = 1,.proxy_buffer = 1}, .callback = &ulpt_read_callback, }, [ULPT_INTR_DT_RD] = { .type = UE_CONTROL, .endpoint = 0x00, /* Control pipe */ .direction = UE_DIR_ANY, .bufsize = sizeof(struct usb_device_request) + 1, .callback = &ulpt_status_callback, .timeout = 1000, /* 1 second */ }, }; static void ulpt_start_read(struct usb_fifo *fifo) { struct ulpt_softc *sc = usb_fifo_softc(fifo); usbd_transfer_start(sc->sc_xfer[ULPT_BULK_DT_RD]); } static void ulpt_stop_read(struct usb_fifo *fifo) { struct ulpt_softc *sc = usb_fifo_softc(fifo); usbd_transfer_stop(sc->sc_xfer[ULPT_BULK_DT_RD]); } static void ulpt_start_write(struct usb_fifo *fifo) { struct ulpt_softc *sc = usb_fifo_softc(fifo); usbd_transfer_start(sc->sc_xfer[ULPT_BULK_DT_WR]); } static void ulpt_stop_write(struct usb_fifo *fifo) { struct ulpt_softc *sc = usb_fifo_softc(fifo); usbd_transfer_stop(sc->sc_xfer[ULPT_BULK_DT_WR]); } static int ulpt_open(struct usb_fifo *fifo, int fflags) { struct ulpt_softc *sc = usb_fifo_softc(fifo); /* we assume that open is a serial process */ if (sc->sc_fflags == 0) { /* reset USB paralell port */ ulpt_reset(sc); } return (unlpt_open(fifo, fflags)); } static int unlpt_open(struct usb_fifo *fifo, int fflags) { struct ulpt_softc *sc = usb_fifo_softc(fifo); if (sc->sc_fflags & fflags) { return (EBUSY); } if (fflags & FREAD) { /* clear stall first */ lockmgr(&sc->sc_lock, LK_EXCLUSIVE); usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_RD]); lockmgr(&sc->sc_lock, LK_RELEASE); if (usb_fifo_alloc_buffer(fifo, usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_RD]), ULPT_IFQ_MAXLEN)) { return (ENOMEM); } /* set which FIFO is opened */ sc->sc_fifo_open[USB_FIFO_RX] = fifo; } if (fflags & FWRITE) { /* clear stall first */ lockmgr(&sc->sc_lock, LK_EXCLUSIVE); usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_WR]); lockmgr(&sc->sc_lock, LK_RELEASE); if (usb_fifo_alloc_buffer(fifo, usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_WR]), ULPT_IFQ_MAXLEN)) { return (ENOMEM); } /* set which FIFO is opened */ sc->sc_fifo_open[USB_FIFO_TX] = fifo; } sc->sc_fflags |= fflags & (FREAD | FWRITE); return (0); } static void ulpt_close(struct usb_fifo *fifo, int fflags) { struct ulpt_softc *sc = usb_fifo_softc(fifo); sc->sc_fflags &= ~(fflags & (FREAD | FWRITE)); if (fflags & (FREAD | FWRITE)) { usb_fifo_free_buffer(fifo); } } static int ulpt_ioctl(struct usb_fifo *fifo, u_long cmd, void *data, int fflags) { return (ENODEV); } static const STRUCT_USB_HOST_ID ulpt_devs[] = { /* Uni-directional USB printer */ {USB_IFACE_CLASS(UICLASS_PRINTER), USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), USB_IFACE_PROTOCOL(UIPROTO_PRINTER_UNI)}, /* Bi-directional USB printer */ {USB_IFACE_CLASS(UICLASS_PRINTER), USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), USB_IFACE_PROTOCOL(UIPROTO_PRINTER_BI)}, /* 1284 USB printer */ {USB_IFACE_CLASS(UICLASS_PRINTER), USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), USB_IFACE_PROTOCOL(UIPROTO_PRINTER_1284)}, }; static int ulpt_probe(device_t dev) { struct usb_attach_arg *uaa = device_get_ivars(dev); int error; DPRINTFN(11, "\n"); if (uaa->usb_mode != USB_MODE_HOST) return (ENXIO); error = usbd_lookup_id_by_uaa(ulpt_devs, sizeof(ulpt_devs), uaa); if (error) return (error); return (BUS_PROBE_GENERIC); } static int ulpt_attach(device_t dev) { struct usb_attach_arg *uaa = device_get_ivars(dev); struct ulpt_softc *sc = device_get_softc(dev); struct usb_interface_descriptor *id; int unit = device_get_unit(dev); int error; uint8_t iface_index = uaa->info.bIfaceIndex; uint8_t alt_index; DPRINTFN(11, "sc=%p\n", sc); sc->sc_dev = dev; sc->sc_udev = uaa->device; device_set_usb_desc(dev); lockinit(&sc->sc_lock, "ulpt lock", 0, LK_CANRECURSE); usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_lock, 0); /* search through all the descriptors looking for bidir mode */ id = usbd_get_interface_descriptor(uaa->iface); alt_index = 0 - 1; while (1) { if (id == NULL) { break; } if ((id->bDescriptorType == UDESC_INTERFACE) && (id->bLength >= sizeof(*id))) { if (id->bInterfaceNumber != uaa->info.bIfaceNum) { break; } else { alt_index++; if ((id->bInterfaceClass == UICLASS_PRINTER) && (id->bInterfaceSubClass == UISUBCLASS_PRINTER) && (id->bInterfaceProtocol == UIPROTO_PRINTER_BI)) { goto found; } } } id = (void *)usb_desc_foreach( usbd_get_config_descriptor(uaa->device), (void *)id); } goto detach; found: DPRINTF("setting alternate " "config number: %d\n", alt_index); if (alt_index) { error = usbd_set_alt_interface_index (uaa->device, iface_index, alt_index); if (error) { DPRINTF("could not set alternate " "config, error=%s\n", usbd_errstr(error)); goto detach; } } sc->sc_iface_no = id->bInterfaceNumber; error = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer, ulpt_config, ULPT_N_TRANSFER, sc, &sc->sc_lock); if (error) { DPRINTF("error=%s\n", usbd_errstr(error)); goto detach; } device_printf(sc->sc_dev, "using bi-directional mode\n"); #if 0 /* * This code is disabled because for some mysterious reason it causes * printing not to work. But only sometimes, and mostly with * UHCI and less often with OHCI. *sigh* */ { struct usb_config_descriptor *cd = usbd_get_config_descriptor(dev); struct usb_device_request req; int len, alen; req.bmRequestType = UT_READ_CLASS_INTERFACE; req.bRequest = UR_GET_DEVICE_ID; USETW(req.wValue, cd->bConfigurationValue); USETW2(req.wIndex, id->bInterfaceNumber, id->bAlternateSetting); USETW(req.wLength, sizeof devinfo - 1); error = usbd_do_request_flags(dev, &req, devinfo, USB_SHORT_XFER_OK, &alen, USB_DEFAULT_TIMEOUT); if (error) { device_printf(sc->sc_dev, "cannot get device id\n"); } else if (alen <= 2) { device_printf(sc->sc_dev, "empty device id, no " "printer connected?\n"); } else { /* devinfo now contains an IEEE-1284 device ID */ len = ((devinfo[0] & 0xff) << 8) | (devinfo[1] & 0xff); if (len > sizeof devinfo - 3) len = sizeof devinfo - 3; devinfo[len] = 0; printf("%s: device id <", device_get_nameunit(sc->sc_dev)); ieee1284_print_id(devinfo + 2); printf(">\n"); } } #endif error = usb_fifo_attach(uaa->device, sc, &sc->sc_lock, &ulpt_fifo_methods, &sc->sc_fifo, unit, 0 - 1, uaa->info.bIfaceIndex, UID_ROOT, GID_OPERATOR, 0644); if (error) { goto detach; } error = usb_fifo_attach(uaa->device, sc, &sc->sc_lock, &unlpt_fifo_methods, &sc->sc_fifo_noreset, unit, 0 - 1, uaa->info.bIfaceIndex, UID_ROOT, GID_OPERATOR, 0644); if (error) { goto detach; } /* start reading of status */ lockmgr(&sc->sc_lock, LK_EXCLUSIVE); ulpt_watchdog(sc); lockmgr(&sc->sc_lock, LK_RELEASE); return (0); detach: ulpt_detach(dev); return (ENOMEM); } static int ulpt_detach(device_t dev) { struct ulpt_softc *sc = device_get_softc(dev); DPRINTF("sc=%p\n", sc); usb_fifo_detach(&sc->sc_fifo); usb_fifo_detach(&sc->sc_fifo_noreset); lockmgr(&sc->sc_lock, LK_EXCLUSIVE); usb_callout_stop(&sc->sc_watchdog); lockmgr(&sc->sc_lock, LK_RELEASE); usbd_transfer_unsetup(sc->sc_xfer, ULPT_N_TRANSFER); usb_callout_drain(&sc->sc_watchdog); lockuninit(&sc->sc_lock); return (0); } #if 0 /* XXX This does not belong here. */ /* * Compare two strings until the second ends. */ static uint8_t ieee1284_compare(const char *a, const char *b) { while (1) { if (*b == 0) { break; } if (*a != *b) { return 1; } b++; a++; } return 0; } /* * Print select parts of an IEEE 1284 device ID. */ void ieee1284_print_id(char *str) { char *p, *q; for (p = str - 1; p; p = strchr(p, ';')) { p++; /* skip ';' */ if (ieee1284_compare(p, "MFG:") == 0 || ieee1284_compare(p, "MANUFACTURER:") == 0 || ieee1284_compare(p, "MDL:") == 0 || ieee1284_compare(p, "MODEL:") == 0) { q = strchr(p, ';'); if (q) printf("%.*s", (int)(q - p + 1), p); } } } #endif static void ulpt_watchdog(void *arg) { struct ulpt_softc *sc = arg; KKASSERT(lockowned(&sc->sc_lock)); /* * Only read status while the device is not opened, due to * possible hardware or firmware bug in some printers. */ if (sc->sc_fflags == 0) usbd_transfer_start(sc->sc_xfer[ULPT_INTR_DT_RD]); usb_callout_reset(&sc->sc_watchdog, hz, &ulpt_watchdog, sc); } static devclass_t ulpt_devclass; static device_method_t ulpt_methods[] = { DEVMETHOD(device_probe, ulpt_probe), DEVMETHOD(device_attach, ulpt_attach), DEVMETHOD(device_detach, ulpt_detach), DEVMETHOD_END }; static driver_t ulpt_driver = { .name = "ulpt", .methods = ulpt_methods, .size = sizeof(struct ulpt_softc), }; DRIVER_MODULE(ulpt, uhub, ulpt_driver, ulpt_devclass, NULL, NULL); MODULE_DEPEND(ulpt, usb, 1, 1, 1); MODULE_VERSION(ulpt, 1);