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/* $OpenBSD: vsvar.h,v 1.7 2003/10/05 20:27:48 miod Exp $ */
/*
* Copyright (c) 1999 Steve Murphree, Jr.
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Van Jacobson of Lawrence Berkeley Laboratory.
*
* 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. 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.
*/
#ifndef _VSVAR_H_
#define _VSVAR_H_
/*
* The largest single request will be MAXPHYS bytes which will require
* at most MAXPHYS/NBPG+1 chain elements to describe, i.e. if none of
* the buffer pages are physically contiguous (MAXPHYS/NBPG) and the
* buffer is not page aligned (+1).
*/
#define DMAMAXIO (MAXPHYS/NBPG+1)
#define LO(x) (u_short)((unsigned long)x & 0x0000FFFF)
#define HI(x) (u_short)((unsigned long)x >> 16)
#define OFF(x) (u_short)((long)kvtop((vaddr_t)x) - (long)kvtop((vaddr_t)sc->sc_vsreg))
#define vs_name(sc) (sc)->sc_dev.dv_xname
/**************** Scater/Gather Stuff *******************/
typedef struct {
union {
unsigned short bytes :16;
#define MAX_SG_BLOCK_SIZE (1<<16) /* the size *has* to be always *smaller* */
struct {
unsigned short :8;
unsigned short gather :8;
} scatter;
} count;
LONGV address;
unsigned short link :1;
unsigned short :3;
unsigned short transfer_type :2;
/* 0x0 is reserved */
#define SHORT_TREANSFER 0x1
#define LONG_TRANSFER 0x2
#define SCATTER_GATTER_LIST_IN_SHORT_IO 0x3
unsigned short memory_type :2;
#define NORMAL_TYPE 0x0
#define BLOCK_MODE 0x1
/* 0x2 is reserved */
/* 0x3 is reserved */
unsigned short address_modifier :8;
} sg_list_element_t;
typedef sg_list_element_t * scatter_gather_list_t;
#define MAX_SG_ELEMENTS 64
struct m328_sg {
struct m328_sg *up;
int elements;
int level;
struct m328_sg *down[MAX_SG_ELEMENTS];
sg_list_element_t list[MAX_SG_ELEMENTS];
};
typedef struct m328_sg *M328_SG;
typedef struct {
struct scsi_xfer *xs;
M328_SG top_sg_list;
} M328_CMD;
/**************** END Scater/Gather Stuff *******************/
struct vs_tinfo {
int cmds; /* #commands processed */
int dconns; /* #disconnects */
int touts; /* #timeouts */
int perrs; /* #parity errors */
int senses; /* #request sense commands sent */
ushort lubusy; /* What local units/subr. are busy? */
u_char flags;
u_char period; /* Period suggestion */
u_char offset; /* Offset suggestion */
int avail; /* Is there a device there */
} tinfo_t;
struct vs_softc {
struct device sc_dev;
struct intrhand sc_ih_e;
struct intrhand sc_ih_n;
struct evcnt sc_intrcnt_e;
struct evcnt sc_intrcnt_n;
u_short sc_ipl;
u_short sc_evec;
u_short sc_nvec;
struct scsi_link sc_link; /* proto for sub devices */
u_long sc_chnl; /* channel 0 or 1 for dual bus cards */
u_long sc_qhp; /* Command queue head pointer */
struct vsreg *sc_vsreg;
#define SSH_NACB 8
struct vs_tinfo sc_tinfo[SSH_NACB];
u_char sc_flags;
u_char sc_sien;
u_char sc_dien;
u_char sc_minsync;
struct map *hus_map;
/* one for each target */
struct syncpar {
u_char state;
u_char sxfer;
u_char sbcl;
} sc_sync[8];
};
/* sync states */
#define SYNC_START 0 /* no sync handshake started */
#define SYNC_SENT 1 /* we sent sync request, no answer yet */
#define SYNC_DONE 2 /* target accepted our (or inferior) settings,
or it rejected the request and we stay async */
#define IOPB_SCSI 0x20
#define IOPB_RESET 0x22
#define IOPB_INIT 0x41
#define IOPB_WQINIT 0x42
#define IOPB_DEV_RESET 0x4D
#define OPT_INTEN 0x0001
#define OPT_INTDIS 0x0000
#define OPT_SG 0x0002
#define OPT_SST 0x0004
#define OPT_SIT 0x0040
#define OPT_READ 0x0000
#define OPT_WRITE 0x0100
#define AM_S32 0x01
#define AM_S16 0x05
#define AM_16 0x0100
#define AM_32 0x0200
#define AM_SHORT 0x0300
#define AM_NORMAL 0x0000
#define AM_BLOCK 0x0400
#define AM_D64BLOCK 0x0C00
#define WQO_AE 0x0001 /* abort enable bit */
#define WQO_FOE 0x0004 /* freeze on error */
#define WQO_PE 0x0008 /* parity enable bit */
#define WQO_ARE 0x0010 /* autosense recovery enable bit */
#define WQO_RFWQ 0x0020 /* report frozen work queue bit */
#define WQO_INIT 0x8000 /* work queue init bit */
void vs_minphys(struct buf *bp);
int vs_scsicmd(struct scsi_xfer *);
/*
* Scatter/gather functions
*/
M328_SG vs_alloc_scatter_gather(void);
void vs_dealloc_scatter_gather(M328_SG sg);
void vs_link_scatter_gather_element(sg_list_element_t *element,
vaddr_t phys_add,
int len);
void vs_link_scatter_gather_list(sg_list_element_t *list,
vaddr_t phys_add,
int elements);
M328_SG vs_build_memory_structure(struct scsi_xfer *xs, M328_IOPB *iopb);
#endif /* _M328VAR_H */
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