sys/bus/u4b/serial/usb_serial.h

   1 /*      $NetBSD: ucomvar.h,v 1.9 2001/01/23 21:56:17 augustss Exp $     */
   2 /*      $FreeBSD$       */
   3
   4 /*-
   5  * Copyright (c) 2001-2002, Shunsuke Akiyama <akiyama@jp.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  * Copyright (c) 1999 The NetBSD Foundation, Inc.
  32  * All rights reserved.
  33  *
  34  * This code is derived from software contributed to The NetBSD Foundation
  35  * by Lennart Augustsson (lennart@augustsson.net) at
  36  * Carlstedt Research & Technology.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  * 1. Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  * 2. Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in the
  45  *    documentation and/or other materials provided with the distribution.
  46  *
  47  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  48  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  49  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  50  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  51  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  52  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  53  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  54  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  55  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  56  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  57  * POSSIBILITY OF SUCH DAMAGE.
  58  */
  59
  60 #ifndef _USB_SERIAL_H_
  61 #define _USB_SERIAL_H_
  62
  63 #include <sys/tty.h>
  64 #include <sys/ttydefaults.h>    /* for TTYDEF_* */
  65 #include <sys/fcntl.h>
  66 #include <sys/sysctl.h>
  67 #include <sys/timepps.h>
  68
  69 /* We should seriously clean this up! */
  70 #define SET(t, f)       (t) |= (f)
  71 #define CLR(t, f)       (t) &= ~((unsigned)(f))
  72 #define ISSET(t, f)     ((t) & (f))
  73
  74 /* Module interface related macros */
  75 #define UCOM_MODVER     1
  76
  77 #define UCOM_MINVER     1
  78 #define UCOM_PREFVER    UCOM_MODVER
  79 #define UCOM_MAXVER     1
  80 #define UCOM_JITTERBUF_SIZE     128     /* bytes */
  81
  82 struct usb_device;
  83 struct ucom_softc;
  84 struct usb_device_request;
  85 struct thread;
  86
  87 /*
  88  * NOTE: There is no guarantee that "ucom_cfg_close()" will
  89  * be called after "ucom_cfg_open()" if the device is detached
  90  * while it is open!
  91  */
  92 struct ucom_callback {
  93         void    (*ucom_cfg_get_status) (struct ucom_softc *, uint8_t *plsr, uint8_t *pmsr);
  94         void    (*ucom_cfg_set_dtr) (struct ucom_softc *, uint8_t);
  95         void    (*ucom_cfg_set_rts) (struct ucom_softc *, uint8_t);
  96         void    (*ucom_cfg_set_break) (struct ucom_softc *, uint8_t);
  97         void    (*ucom_cfg_set_ring) (struct ucom_softc *, uint8_t);
  98         void    (*ucom_cfg_param) (struct ucom_softc *, struct termios *);
  99         void    (*ucom_cfg_open) (struct ucom_softc *);
 100         void    (*ucom_cfg_close) (struct ucom_softc *);
 101         int     (*ucom_pre_open) (struct ucom_softc *);
 102         int     (*ucom_pre_param) (struct ucom_softc *, struct termios *);
 103         int     (*ucom_ioctl) (struct ucom_softc *, uint32_t, caddr_t, int, struct thread *);
 104         void    (*ucom_start_read) (struct ucom_softc *);
 105         void    (*ucom_stop_read) (struct ucom_softc *);
 106         void    (*ucom_start_write) (struct ucom_softc *);
 107         void    (*ucom_stop_write) (struct ucom_softc *);
 108         void    (*ucom_tty_name) (struct ucom_softc *, char *pbuf, uint16_t buflen, uint16_t unit, uint16_t subunit);
 109         void    (*ucom_poll) (struct ucom_softc *);
 110         void    (*ucom_free) (struct ucom_softc *);
 111 };
 112
 113 /* Line status register */
 114 #define ULSR_RCV_FIFO   0x80
 115 #define ULSR_TSRE       0x40            /* Transmitter empty: byte sent */
 116 #define ULSR_TXRDY      0x20            /* Transmitter buffer empty */
 117 #define ULSR_BI         0x10            /* Break detected */
 118 #define ULSR_FE         0x08            /* Framing error: bad stop bit */
 119 #define ULSR_PE         0x04            /* Parity error */
 120 #define ULSR_OE         0x02            /* Overrun, lost incoming byte */
 121 #define ULSR_RXRDY      0x01            /* Byte ready in Receive Buffer */
 122 #define ULSR_RCV_MASK   0x1f            /* Mask for incoming data or error */
 123
 124 struct ucom_cfg_task {
 125         struct usb_proc_msg hdr;
 126         struct ucom_softc *sc;
 127 };
 128
 129 struct ucom_param_task {
 130         struct usb_proc_msg hdr;
 131         struct ucom_softc *sc;
 132         struct termios termios_copy;
 133 };
 134
 135 struct ucom_super_softc {
 136         struct usb_process sc_tq;
 137         int sc_unit;
 138         int sc_subunits;
 139         int sc_refs;
 140         int sc_flag;    /* see UCOM_FLAG_XXX */
 141         struct sysctl_oid *sc_sysctl_ttyname;
 142         struct sysctl_oid *sc_sysctl_ttyports;
 143         char sc_ttyname[16];
 144 };
 145
 146 struct ucom_softc {
 147         /*
 148          * NOTE: To avoid losing level change information we use two
 149          * tasks instead of one for all commands.
 150          *
 151          * Level changes are transitions like:
 152          *
 153          * ON->OFF
 154          * OFF->ON
 155          * OPEN->CLOSE
 156          * CLOSE->OPEN
 157          */
 158         struct ucom_cfg_task    sc_start_task[2];
 159         struct ucom_cfg_task    sc_open_task[2];
 160         struct ucom_cfg_task    sc_close_task[2];
 161         struct ucom_cfg_task    sc_line_state_task[2];
 162         struct ucom_cfg_task    sc_status_task[2];
 163         struct ucom_param_task  sc_param_task[2];
 164         /* pulse capturing support, PPS */
 165         struct pps_state        sc_pps;
 166         /* Used to set "UCOM_FLAG_GP_DATA" flag: */
 167         struct usb_proc_msg     *sc_last_start_xfer;
 168         const struct ucom_callback *sc_callback;
 169         struct ucom_super_softc *sc_super;
 170         struct tty *sc_tty;
 171         struct dev *sc_dev;
 172         cdev_t sc_cdev;                 /* this is the /dev/ttyUX */
 173         cdev_t sc_cdev_init;            /* /dev/ttyUX.init */
 174         cdev_t sc_cdev_lock;            /* /dev/ttyUX.lock */
 175         cdev_t sc_cdev2;                /* /dev/cuaUX */
 176         cdev_t sc_cdev2_init;           /* /dev/cuaUX.init */
 177         cdev_t sc_cdev2_lock;           /* /dev/cuaUX.lock */
 178         struct termios sc_it_in;        /* Initial state in */
 179         struct termios sc_it_out;       /* Initial state out */
 180         struct termios sc_lt_in;        /* Lockstate in */
 181         struct termios sc_lt_out;       /* Lockstate out */
 182         struct lock *sc_lock;
 183         void   *sc_parent;
 184         int sc_subunit;
 185         uint16_t sc_jitterbuf_in;
 186         uint16_t sc_jitterbuf_out;
 187         uint16_t sc_portno;
 188         uint16_t sc_flag;
 189 #define UCOM_FLAG_RTS_IFLOW     0x01    /* use RTS input flow control */
 190 #define UCOM_FLAG_GONE          0x02    /* the device is gone */
 191 #define UCOM_FLAG_ATTACHED      0x04    /* set if attached */
 192 #define UCOM_FLAG_GP_DATA       0x08    /* set if get and put data is possible */
 193 #define UCOM_FLAG_LL_READY      0x20    /* set if low layer is ready */
 194 #define UCOM_FLAG_HL_READY      0x40    /* set if high layer is ready */
 195 #define UCOM_FLAG_CONSOLE       0x80    /* set if device is a console */
 196 #define UCOM_FLAG_WAIT_REFS   0x0100    /* set if we must wait for refs */
 197 #define UCOM_FLAG_FREE_UNIT   0x0200    /* set if we must free the unit */
 198 #define UCOM_FLAG_INWAKEUP    0x0400    /* set if we are in the tsw_inwakeup callback */
 199         uint8_t sc_lsr;
 200         uint8_t sc_msr;
 201         uint8_t sc_mcr;
 202         /* programmed line state bits */
 203         uint8_t sc_pls_set;             /* set bits */
 204         uint8_t sc_pls_clr;             /* cleared bits */
 205         uint8_t sc_pls_curr;            /* last state */
 206 #define UCOM_LS_DTR     0x01
 207 #define UCOM_LS_RTS     0x02
 208 #define UCOM_LS_BREAK   0x04
 209 #define UCOM_LS_RING    0x08
 210         u_char  hotchar;
 211         uint8_t sc_jitterbuf[UCOM_JITTERBUF_SIZE];
 212 };
 213
 214 #define UCOM_MTX_ASSERT(sc, what) KKASSERT(lockowned((sc)->sc_lock))
 215 #define UCOM_MTX_LOCK(sc) lockmgr((sc)->sc_lock, LK_EXCLUSIVE)
 216 #define UCOM_MTX_UNLOCK(sc) lockmgr((sc)->sc_lock, LK_RELEASE)
 217 #define UCOM_UNLOAD_DRAIN(x) \
 218 SYSUNINIT(var, SI_SUB_KLD - 3, SI_ORDER_ANY, ucom_drain_all, 0)
 219
 220 #define ucom_cfg_do_request(udev,com,req,ptr,flags,timo) \
 221     usbd_do_request_proc(udev,&(com)->sc_super->sc_tq,req,ptr,flags,NULL,timo)
 222
 223 int     ucom_attach(struct ucom_super_softc *,
 224             struct ucom_softc *, int, void *,
 225             const struct ucom_callback *callback, struct lock *);
 226 void    ucom_detach(struct ucom_super_softc *, struct ucom_softc *);
 227 void    ucom_set_pnpinfo_usb(struct ucom_super_softc *, device_t);
 228 void    ucom_status_change(struct ucom_softc *);
 229 uint8_t ucom_get_data(struct ucom_softc *, struct usb_page_cache *,
 230             uint32_t, uint32_t, uint32_t *);
 231 void    ucom_put_data(struct ucom_softc *, struct usb_page_cache *,
 232             uint32_t, uint32_t);
 233 uint8_t ucom_cfg_is_gone(struct ucom_softc *);
 234 void    ucom_drain(struct ucom_super_softc *);
 235 void    ucom_drain_all(void *);
 236 void    ucom_ref(struct ucom_super_softc *);
 237 int     ucom_unref(struct ucom_super_softc *);
 238 #endif                                  /* _USB_SERIAL_H_ */