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Diffstat (limited to 'sys/arch/vax/uba/udareg.h')
| -rw-r--r-- | sys/arch/vax/uba/udareg.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/sys/arch/vax/uba/udareg.h b/sys/arch/vax/uba/udareg.h new file mode 100644 index 00000000000..f6107a49605 --- /dev/null +++ b/sys/arch/vax/uba/udareg.h @@ -0,0 +1,107 @@ +/* $NetBSD: udareg.h,v 1.2 1994/10/26 08:02:51 cgd Exp $ */ + +/* + * 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; +}; |