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- /*
- * Copyright (c) 1988 Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Chris Torek.
- *
- * 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 University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
- *
- * @(#)udareg.h 7.3 (Berkeley) 5/8/91
- */
-
- /*
- * UDA50 registers and structures
- */
-
- /*
- * Writing any value to udaip starts initialisation. Reading from it
- * when the UDA is running makes the UDA look through the command ring
- * to find any new commands. Reading udasa gives status; writing it
- * during initialisation sets things up.
- */
- struct udadevice {
- u_short udaip; /* initialisation and polling */
- u_short udasa; /* status and address */
- };
-
- /*
- * Bits in UDA status register during initialisation
- */
- #define UDA_ERR 0x8000 /* error */
- #define UDA_STEP4 0x4000 /* step 4 has started */
- #define UDA_STEP3 0x2000 /* step 3 has started */
- #define UDA_STEP2 0x1000 /* step 2 has started */
- #define UDA_STEP1 0x0800 /* step 1 has started */
- #define UDA_NV 0x0400 /* no host settable interrupt vector */
- #define UDA_QB 0x0200 /* controller supports Q22 bus */
- #define UDA_DI 0x0100 /* controller implements diagnostics */
- #define UDA_IE 0x0080 /* interrupt enable */
- #define UDA_NCNRMASK 0x003f /* in STEP1, bits 0-2=NCMDL2, 3-5=NRSPL2 */
- #define UDA_IVECMASK 0x007f /* in STEP2, bits 0-6 are interruptvec / 4 */
- #define UDA_PI 0x0001 /* host requests adapter purge interrupts */
-
- /*
- * Bits in UDA status register after initialisation
- */
- #define UDA_GO 0x0001 /* run */
-
- #define UDASR_BITS \
- "\20\20ERR\17STEP4\16STEP3\15STEP2\14STEP1\13NV\12QB\11DI\10IE\1GO"
-
- /*
- * UDA Communications Area. Note that this structure definition
- * requires NRSP and NCMD to be defined already.
- */
- struct udaca {
- short ca_xxx1; /* unused */
- char ca_xxx2; /* unused */
- char ca_bdp; /* BDP to purge */
- short ca_cmdint; /* command ring transition flag */
- short ca_rspint; /* response ring transition flag */
- long ca_rspdsc[NRSP];/* response descriptors */
- long ca_cmddsc[NCMD];/* command descriptors */
- };
-
- /*
- * Simplified routines (e.g., uddump) reprogram the UDA50 for one command
- * and one response at a time; uda1ca is like udaca except that it provides
- * exactly one command and response descriptor.
- */
- struct uda1ca {
- short ca_xxx1;
- char ca_xxx2;
- char ca_bdp;
- short ca_cmdint;
- short ca_rspint;
- long ca_rspdsc;
- long ca_cmddsc;
- };
-