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/* $OpenBSD: tmscp.c,v 1.2 2002/03/14 03:16:02 millert Exp $ */
/* $NetBSD: tmscp.c,v 1.3 1999/06/30 18:19:26 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 "arch/vax/mscp/mscp.h"
#include "arch/vax/mscp/mscpreg.h"
#include "vaxstand.h"
static command(int,int);
/*
* These routines for TMSCP tape standalone boot is very simple,
* assuming a lots of thing like that we only working at one tape at
* a time, no separate routines for uba driver etc..
* This code is directly copied from ra disk driver.
*/
struct ra_softc {
int udaddr;
int ubaddr;
int unit;
};
static volatile struct uda {
struct mscp_1ca uda_ca; /* communications area */
struct mscp uda_rsp; /* response packets */
struct mscp uda_cmd; /* command packets */
} uda;
struct udadevice {
short udaip;
short udasa;
};
static volatile struct uda *ubauda;
static volatile struct udadevice *udacsr;
static struct ra_softc ra_softc;
static int curblock;
tmscpopen(f, adapt, ctlr, unit, part)
struct open_file *f;
int ctlr, unit, part;
{
char *msg;
extern u_int tmsaddr;
volatile struct ra_softc *ra=&ra_softc;
volatile u_int *nisse;
unsigned short johan;
int i,err;
curblock = 0;
if(adapt>nuba) return(EADAPT);
if(ctlr>nuda) return(ECTLR);
ra->udaddr=uioaddr[adapt]+tmsaddr;
ra->ubaddr=(int)ubaaddr[adapt];
ra->unit=unit;
udacsr=(void *)ra->udaddr;
nisse=((u_int *)ubaaddr[adapt]) + 512;
nisse[494]=PG_V|(((u_int)&uda)>>9);
nisse[495]=nisse[494]+1;
ubauda=(void *)0x3dc00+(((u_int)(&uda))&0x1ff);
/*
* Init of this tmscp ctlr.
*/
udacsr->udaip=0; /* Start init */
while((udacsr->udasa&MP_STEP1) == 0);
udacsr->udasa=0x8000;
while((udacsr->udasa&MP_STEP2) == 0);
johan=(((u_int)ubauda)&0xffff)+8;
udacsr->udasa=johan;
while((udacsr->udasa&MP_STEP3) == 0);
udacsr->udasa=3;
while((udacsr->udasa&MP_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;
uda.uda_cmd.mscp_un.un_seq.seq_addr = (long *)&uda.uda_ca.ca_cmddsc;
uda.uda_rsp.mscp_un.un_seq.seq_addr = (long *)&uda.uda_ca.ca_rspdsc;
uda.uda_cmd.mscp_vcid = 1;
uda.uda_cmd.mscp_un.un_sccc.sccc_ctlrflags = 0;
command(M_OP_SETCTLRC, 0);
uda.uda_cmd.mscp_unit=ra->unit;
command(M_OP_ONLINE, 0);
if (part) {
uda.uda_cmd.mscp_un.un_seq.seq_buffer = part;
command(M_OP_POS, 0);
uda.uda_cmd.mscp_un.un_seq.seq_buffer = 0;
}
f->f_devdata=(void *)ra;
return(0);
}
static
command(cmd, arg)
{
volatile int hej;
uda.uda_cmd.mscp_opcode = cmd;
uda.uda_cmd.mscp_modifier = arg;
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) {
if (uda.uda_ca.ca_cmdint)
uda.uda_ca.ca_cmdint = 0;
}
}
tmscpstrategy(ra, func, dblk, size, buf, rsize)
struct ra_softc *ra;
int func;
daddr_t dblk;
char *buf;
u_int size, *rsize;
{
u_int i,j,pfnum, mapnr, nsize, bn, cn, sn, tn;
volatile struct udadevice *udadev=(void *)ra->udaddr;
volatile u_int *ptmapp = (u_int *)ra->ubaddr + 512;
volatile int hej;
pfnum=(u_int)buf>>VAX_PGSHIFT;
for(mapnr=0, nsize=size;(nsize+VAX_NBPG)>0;nsize-=VAX_NBPG)
ptmapp[mapnr++]=PG_V|pfnum++;
/*
* First position tape. Remember where we are.
*/
if (dblk < curblock) {
uda.uda_cmd.mscp_seq.seq_bytecount = curblock - dblk;
command(M_OP_POS, 12); /* 12 == step block backward */
} else {
uda.uda_cmd.mscp_seq.seq_bytecount = dblk - curblock;
command(M_OP_POS, 4); /* 4 == step block forward */
}
curblock = size/512 + dblk;
/*
* Read in the number of blocks we need.
* Why doesn't read of multiple blocks work?????
*/
for (i = 0 ; i < size/512 ; i++) {
uda.uda_cmd.mscp_seq.seq_lbn = 1;
uda.uda_cmd.mscp_seq.seq_bytecount = 512;
uda.uda_cmd.mscp_seq.seq_buffer =
(((u_int)buf) & 0x1ff) + i * 512;
uda.uda_cmd.mscp_unit = ra->unit;
command(M_OP_READ, 0);
}
*rsize=size;
return 0;
}
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