FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/comvar.h

     /*      $NetBSD: comvar.h,v 1.47 2003/11/08 01:59:38 simonb Exp $       */
     
     /*
      * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
      *
      * 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 Christopher G. Demetriou
     *      for the NetBSD Project.
     * 4. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
     */
    
    #include "rnd.h"
    #include "opt_multiprocessor.h"
    #include "opt_lockdebug.h"
    #include "opt_com.h"
    #include "opt_kgdb.h"
    
    #if NRND > 0 && defined(RND_COM)
    #include <sys/rnd.h>
    #endif
    
    #include <sys/callout.h>
    #include <sys/timepps.h>
    #if (defined(MULTIPROCESSOR) || defined(LOCKDEBUG)) && defined(COM_MPLOCK)
    #include <sys/lock.h>
    #endif
    
    int comcnattach __P((bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t));
    
    #ifdef KGDB
    int com_kgdb_attach __P((bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t));
    #endif
    
    int com_is_console __P((bus_space_tag_t, bus_addr_t, bus_space_handle_t *));
    
    /* Hardware flag masks */
    #define COM_HW_NOIEN    0x01
    #define COM_HW_FIFO     0x02
                    /*      0x04    free for use */
    #define COM_HW_FLOW     0x08
    #define COM_HW_DEV_OK   0x20
    #define COM_HW_CONSOLE  0x40
    #define COM_HW_KGDB     0x80
    #define COM_HW_TXFIFO_DISABLE   0x100
    #define COM_HW_NO_TXPRELOAD     0x200
    
    /* Buffer size for character buffer */
    #define COM_RING_SIZE   2048
    
    struct com_softc {
            struct device sc_dev;
            void *sc_si;
            struct tty *sc_tty;
    
            struct callout sc_diag_callout;
    
            bus_addr_t sc_iobase;                   /* XXX ISA-centric name */
            int sc_frequency;
    
            bus_space_tag_t sc_iot;
            bus_space_handle_t sc_ioh;
            bus_space_handle_t sc_hayespioh;
    
            u_int sc_overflows,
                  sc_floods,
                  sc_errors;
    
            int sc_hwflags,
                sc_swflags;
            u_int sc_fifolen;
    
            u_int sc_r_hiwat,
                  sc_r_lowat;
            u_char *volatile sc_rbget,
                   *volatile sc_rbput;
            volatile u_int sc_rbavail;
            u_char *sc_rbuf,
                   *sc_ebuf;
   
           u_char *sc_tba;
           u_int sc_tbc,
                 sc_heldtbc;
   
           volatile u_char sc_rx_flags,
   #define RX_TTY_BLOCKED          0x01
   #define RX_TTY_OVERFLOWED       0x02
   #define RX_IBUF_BLOCKED         0x04
   #define RX_IBUF_OVERFLOWED      0x08
   #define RX_ANY_BLOCK            0x0f
                           sc_tx_busy,
                           sc_tx_done,
                           sc_tx_stopped,
                           sc_st_check,
                           sc_rx_ready;
   
           volatile u_char sc_heldchange;
           volatile u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr,
               sc_mcr_active, sc_lcr, sc_ier, sc_fifo, sc_dlbl, sc_dlbh, sc_efr;
           u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd;
   
   #ifdef COM_HAYESP
           u_char sc_prescaler;
   #endif
   
           /*
            * There are a great many almost-ns16550-compatible UARTs out
            * there, which have minor differences.  The type field here
            * lets us distinguish between them.
            */
           int sc_type;
   #define COM_TYPE_NORMAL         0       /* normal 16x50 */
   #define COM_TYPE_HAYESP         1       /* Hayes ESP modem */
   #define COM_TYPE_PXA2x0         2       /* Intel PXA2x0 processor built-in */
   #define COM_TYPE_AU1x00         3       /* AMD/Alchemy Au1x000 proc. built-in */
   
           /* power management hooks */
           int (*enable) __P((struct com_softc *));
           void (*disable) __P((struct com_softc *));
           int enabled;
   
           /* PPS signal on DCD, with or without inkernel clock disciplining */
           u_char  sc_ppsmask;                     /* pps signal mask */
           u_char  sc_ppsassert;                   /* pps leading edge */
           u_char  sc_ppsclear;                    /* pps trailing edge */
           pps_info_t ppsinfo;
           pps_params_t ppsparam;
   
   #if NRND > 0 && defined(RND_COM)
           rndsource_element_t  rnd_source;
   #endif
   #if (defined(MULTIPROCESSOR) || defined(LOCKDEBUG)) && defined(COM_MPLOCK)
           struct simplelock       sc_lock;
   #endif
   };
   
   /* Macros to clear/set/test flags. */
   #define SET(t, f)       (t) |= (f)
   #define CLR(t, f)       (t) &= ~(f)
   #define ISSET(t, f)     ((t) & (f))
   
   int comprobe1 __P((bus_space_tag_t, bus_space_handle_t));
   int comintr __P((void *));
   void com_attach_subr __P((struct com_softc *));
   int com_detach __P((struct device *, int));
   int com_activate __P((struct device *, enum devact));
   
   #ifndef __HAVE_GENERIC_SOFT_INTERRUPTS
   #ifdef __NO_SOFT_SERIAL_INTERRUPT
   #define IPL_SERIAL      IPL_TTY
   #define splserial()     spltty()
   #define IPL_SOFTSERIAL  IPL_TTY
   #define splsoftserial() spltty()
   #endif
   #endif

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