140 lines
4.9 KiB
C
140 lines
4.9 KiB
C
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/* $NetBSD: ncr5380var.h,v 1.1 1996/02/22 21:07:12 leo Exp $ */
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/*
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* Copyright (c) 1996 Leo Weppelman.
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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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* 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Leo Weppelman.
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* 4. 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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _NCR5380VAR_H
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#define _NCR5380VAR_H
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struct ncr_softc {
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struct device sc_dev;
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struct scsi_link sc_link;
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/*
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* Some (pre-SCSI2) devices don't support select with ATN.
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* If the device responds to select with ATN by going into
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* command phase (ignoring ATN), then we flag it in the
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* following bitmask.
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* We also keep track of which devices have been selected
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* before. This allows us to not even try raising ATN if
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* the target doesn't respond to it the first time.
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*/
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u_int8_t sc_noselatn;
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u_int8_t sc_selected;
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};
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/*
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* Max. number of dma-chains per request
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*/
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#define MAXDMAIO (MAXPHYS/NBPG + 1)
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/*
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* Some requests are not contiguous in physical memory. We need to break them
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* up into contiguous parts for DMA.
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*/
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struct dma_chain {
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u_int dm_count;
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u_long dm_addr;
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};
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/*
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* Define our issue, free and disconnect queue's.
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*/
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typedef struct req_q {
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struct req_q *next; /* next in free, issue or discon queue */
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struct req_q *link; /* next linked command to execute */
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struct scsi_xfer *xs; /* request from high-level driver */
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u_short dr_flag; /* driver state */
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u_char phase; /* current SCSI phase */
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u_char msgout; /* message to send when requested */
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u_char targ_id; /* target for command */
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u_char targ_lun; /* lun for command */
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u_char status; /* returned status byte */
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u_char message; /* returned message byte */
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u_char *bounceb; /* allocated bounce buffer */
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u_char *bouncerp; /* bounce read-pointer */
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struct dma_chain dm_chain[MAXDMAIO];
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struct dma_chain *dm_cur; /* current dma-request */
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struct dma_chain *dm_last; /* last dma-request */
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long xdata_len; /* length of transfer */
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u_char *xdata_ptr; /* virtual address of transfer */
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struct scsi_generic xcmd; /* command to execute */
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} SC_REQ;
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/*
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* Values for dr_flag:
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*/
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#define DRIVER_IN_DMA 0x01 /* Non-polled DMA activated */
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#define DRIVER_AUTOSEN 0x02 /* Doing automatic sense */
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#define DRIVER_NOINT 0x04 /* We are booting: no interrupts */
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#define DRIVER_DMAOK 0x08 /* DMA can be used on this request */
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#define DRIVER_BOUNCING 0x10 /* Using the bounce buffer */
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#define DRIVER_LINKCHK 0x20 /* Doing the linked command check */
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static SC_REQ *issue_q = NULL; /* Commands waiting to be issued*/
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static SC_REQ *discon_q = NULL; /* Commands disconnected */
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static SC_REQ *connected = NULL; /* Command currently connected */
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/*
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* Various debug definitions
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*/
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#ifdef DBG_NOSTATIC
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# define static
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#endif
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#ifdef DBG_SEL
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# define DBG_SELPRINT(a,b) printf(a,b)
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#else
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# define DBG_SELPRINT(a,b)
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#endif
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#ifdef DBG_PIO
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# define DBG_PIOPRINT(a,b,c) printf(a,b,c)
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#else
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# define DBG_PIOPRINT(a,b,c)
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#endif
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#ifdef DBG_INF
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# define DBG_INFPRINT(a,b,c) a(b,c)
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#else
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# define DBG_INFPRINT(a,b,c)
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#endif
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#ifdef DBG_PID
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/* static char *last_hit = NULL, *olast_hit = NULL; */
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static char *last_hit[DBG_PID];
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# define PID(a) \
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{ int i; \
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for (i=0; i< DBG_PID-1; i++) \
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last_hit[i] = last_hit[i+1]; \
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last_hit[DBG_PID-1] = a; } \
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/* olast_hit = last_hit; last_hit = a; */
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#else
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# define PID(a)
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#endif
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#endif /* _NCR5380VAR_H */
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