37507c1bd2
operands that are set during seqeuncer program download instead of at assembly time. Convert the sequencer code to use" downloaded constants" for four run time constants that vary depending on the board type. This frees up 4 bytes of sequencer scratch ram space where these constants used to be stored and also removes the additional instructions required to load their values into the accumulator prior to using them. Remove the REJBYTE sram variable. The host driver can just as easly read the accumulator to get this value. The scratch ram savings is important as the old code used to clober the SCSICONF register on 274X cards which sits near the top of scratch ram space. The SCSICONF register controls bus termination, and clobbering it is not a good thing. Now we have 4 bytes to spare. This should fix the reported problems with cards that don't have devices attached to them failing with a stream of "Somone reset bus X" messages. Doug Ledford determined the cause of the problem, fixes by me.
146 lines
3.5 KiB
C
146 lines
3.5 KiB
C
/*
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* Aic7xxx SCSI host adapter firmware asssembler symbol table definitions
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*
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* Copyright (c) 1997 Justin T. Gibbs.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: aicasm_symbol.h,v 1.2 1997/06/27 19:38:56 gibbs Exp $
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*/
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#include <sys/queue.h>
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typedef enum {
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UNINITIALIZED,
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REGISTER,
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ALIAS,
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SCBLOC,
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SRAMLOC,
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MASK,
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BIT,
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CONST,
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DOWNLOAD_CONST,
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LABEL,
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CONDITIONAL
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}symtype;
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typedef enum {
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RO = 0x01,
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WO = 0x02,
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RW = 0x03
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}amode_t;
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struct reg_info {
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u_int8_t address;
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int size;
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amode_t mode;
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u_int8_t valid_bitmask;
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int typecheck_masks;
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};
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typedef SLIST_HEAD(symlist, symbol_node) symlist_t;
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struct mask_info {
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symlist_t symrefs;
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u_int8_t mask;
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};
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struct const_info {
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u_int8_t value;
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int define;
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};
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struct alias_info {
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struct symbol *parent;
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};
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struct label_info {
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int address;
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};
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struct cond_info {
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int value;
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};
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typedef struct expression_info {
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symlist_t referenced_syms;
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int value;
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} expression_t;
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typedef struct symbol {
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char *name;
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symtype type;
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union {
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struct reg_info *rinfo;
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struct mask_info *minfo;
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struct const_info *cinfo;
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struct alias_info *ainfo;
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struct label_info *linfo;
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struct cond_info *condinfo;
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}info;
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} symbol_t;
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typedef struct symbol_ref {
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symbol_t *symbol;
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int offset;
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} symbol_ref_t;
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typedef struct symbol_node {
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SLIST_ENTRY(symbol_node) links;
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symbol_t *symbol;
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}symbol_node_t;
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typedef struct patch {
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STAILQ_ENTRY(patch) links;
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int negative;
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int begin;
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int end;
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int options;
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} patch_t;
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void symbol_delete __P((symbol_t *symbol));
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void symtable_open __P((void));
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void symtable_close __P((void));
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symbol_t *
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symtable_get __P((char *name));
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symbol_node_t *
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symlist_search __P((symlist_t *symlist, char *symname));
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void
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symlist_add __P((symlist_t *symlist, symbol_t *symbol, int how));
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#define SYMLIST_INSERT_HEAD 0x00
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#define SYMLIST_SORT 0x01
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void symlist_free __P((symlist_t *symlist));
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void symlist_merge __P((symlist_t *symlist_dest, symlist_t *symlist_src1,
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symlist_t *symlist_src2));
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void symtable_dump __P((FILE *ofile));
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