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/* $NetBSD: ra.c,v 1.3 1995/09/16 13:34:22 ragge Exp $ */
/*
* Copyright (c) 1995 Ludd, University of Lule}, Sweden.
* All rights reserved.
*
* 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 at Ludd, University of Lule}.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/* All bugs are subject to removal without further notice */
#define NRSP 0 /* Kludge */
#define NCMD 0 /* Kludge */
#include "sys/param.h"
#include "sys/disklabel.h"
#include "lib/libsa/stand.h"
#include "../include/pte.h"
#include "../include/macros.h"
#include "../uba/ubareg.h"
#include "../uba/udareg.h"
#include "../vax/mscp.h"
#include "vaxstand.h"
static command(int);
/*
* These routines for RA disk standalone boot is wery simple,
* assuming a lots of thing like that we only working at one ra disk
* a time, no separate routines for uba driver etc..
* This code is foolish and should need a cleanup.
* But it works :)
*/
struct ra_softc {
int udaddr;
int ubaddr;
int part;
int unit;
};
volatile struct uda {
struct uda1ca uda_ca; /* communications area */
struct mscp uda_rsp; /* response packets */
struct mscp uda_cmd; /* command packets */
} uda;
volatile struct uda *ubauda;
volatile struct udadevice *udacsr;
struct disklabel ralabel;
struct ra_softc ra_softc;
char io_buf[MAXBSIZE];
raopen(f, adapt, ctlr, unit, part)
struct open_file *f;
int ctlr, unit, part;
{
char *msg;
struct disklabel *lp=&ralabel;
volatile struct ra_softc *ra=&ra_softc;
volatile struct uba_regs *mr=(void *)ubaaddr[adapt];
volatile u_int *nisse;
unsigned short johan;
int i,err;
if(adapt>nuba) return(EADAPT);
if(ctlr>nuda) return(ECTLR);
bzero(lp, sizeof(struct disklabel));
ra->udaddr=uioaddr[adapt]+udaaddr[ctlr];
ra->ubaddr=(int)mr;
ra->unit=unit;
ra->part = part;
udacsr=(void*)ra->udaddr;
nisse=&mr->uba_map[0];
nisse[494]=PG_V|(((u_int)&uda)>>9);
nisse[495]=nisse[494]+1;
ubauda=(void*)0x3dc00+(((u_int)(&uda))&0x1ff);
/* Init of this uda */
udacsr->udaip=0; /* Start init */
while((udacsr->udasa&UDA_STEP1) == 0);
udacsr->udasa=0x8000;
while((udacsr->udasa&UDA_STEP2) == 0);
johan=(((u_int)ubauda)&0xffff)+8;
udacsr->udasa=johan;
while((udacsr->udasa&UDA_STEP3) == 0);
udacsr->udasa=3;
while((udacsr->udasa&UDA_STEP4) == 0);
udacsr->udasa=0x0001;
uda.uda_ca.ca_rspdsc=(int)&ubauda->uda_rsp.mscp_cmdref;
uda.uda_ca.ca_cmddsc=(int)&ubauda->uda_cmd.mscp_cmdref;
command(M_OP_SETCTLRC);
uda.uda_cmd.mscp_unit=ra->unit;
command(M_OP_ONLINE);
err=rastrategy(ra,F_READ, LABELSECTOR, DEV_BSIZE, io_buf, &i);
if(err){
printf("reading disklabel: %s\n",strerror(err));
return 0;
}
msg=getdisklabel(io_buf+LABELOFFSET, lp);
if(msg) {
printf("getdisklabel: %s\n",msg);
}
f->f_devdata=(void *)ra;
return(0);
}
static
command(cmd)
{
volatile int hej;
uda.uda_cmd.mscp_opcode=cmd;
uda.uda_cmd.mscp_msglen=MSCP_MSGLEN;
uda.uda_rsp.mscp_msglen=MSCP_MSGLEN;
uda.uda_ca.ca_rspdsc |= MSCP_OWN|MSCP_INT;
uda.uda_ca.ca_cmddsc |= MSCP_OWN|MSCP_INT;
hej=udacsr->udaip;
while(uda.uda_ca.ca_rspdsc<0);
}
rastrategy(ra, func, dblk, size, buf, rsize)
struct ra_softc *ra;
int func;
daddr_t dblk;
char *buf;
u_int size, *rsize;
{
volatile struct uba_regs *ur;
volatile struct udadevice *udadev;
volatile u_int *ptmapp;
struct disklabel *lp;
u_int i, j, pfnum, mapnr, nsize;
volatile int hej;
ur = (void *)ra->ubaddr;
udadev = (void*)ra->udaddr;
ptmapp = &ur->uba_map[0];
lp = &ralabel;
pfnum = (u_int)buf >> PGSHIFT;
for(mapnr = 0, nsize = size; (nsize + NBPG) > 0; nsize -= NBPG)
ptmapp[mapnr++] = PG_V | pfnum++;
uda.uda_cmd.mscp_seq.seq_lbn =
dblk + lp->d_partitions[ra->part].p_offset;
uda.uda_cmd.mscp_seq.seq_bytecount = size;
uda.uda_cmd.mscp_seq.seq_buffer = ((u_int)buf) & 0x1ff;
uda.uda_cmd.mscp_unit = ra->unit;
if (func == F_WRITE)
command(M_OP_WRITE);
else
command(M_OP_READ);
*rsize = size;
return 0;
}
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