/* $NetBSD: uba_mainbus.c,v 1.14 2017/05/22 17:15:45 ragge Exp $ */
/*
* Copyright (c) 1982, 1986 The Regents of the University of California.
* 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. 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.
*
* @(#)uba.c 7.10 (Berkeley) 12/16/90
* @(#)autoconf.c 7.20 (Berkeley) 5/9/91
*/
/*
* Copyright (c) 1996 Jonathan Stone.
* Copyright (c) 1994, 1996 Ludd, University of Lule}, Sweden.
*
* 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.
*
* 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.
*
* @(#)uba.c 7.10 (Berkeley) 12/16/90
* @(#)autoconf.c 7.20 (Berkeley) 5/9/91
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uba_mainbus.c,v 1.14 2017/05/22 17:15:45 ragge Exp $");
#define _VAX_BUS_DMA_PRIVATE
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/cpu.h>
#include <sys/device.h>
#include <machine/nexus.h>
#include <machine/sgmap.h>
#include <machine/mainbus.h>
#include <dev/qbus/ubavar.h>
#include <vax/uba/uba_common.h>
#include "ioconf.h"
/* Some Qbus-specific defines */
#define QBASIZE (8192 * VAX_NBPG)
#define QBAMAP 0x20088000
#define QBAMEM 0x30000000
#define QIOPAGE 0x20000000
/*
* The Q22 bus is the main IO bus on MicroVAX II/MicroVAX III systems.
* It has an address space of 4MB (22 address bits), therefore the name,
* and is hardware compatible with all 16 and 18 bits Q-bus devices.
*/
static int qba_match(device_t, cfdata_t, void *);
static void qba_attach(device_t, device_t, void *);
static void qba_beforescan(struct uba_softc*);
static void qba_init(struct uba_softc*);
CFATTACH_DECL_NEW(uba_mainbus, sizeof(struct uba_vsoftc),
qba_match, qba_attach, NULL, NULL);
extern struct vax_bus_space vax_mem_bus_space;
int
qba_match(device_t parent, cfdata_t cf, void *aux)
{
struct mainbus_attach_args * const ma = aux;
return !strcmp(uba_cd.cd_name, ma->ma_type);
}
void
qba_attach(device_t parent, device_t self, void *aux)
{
struct mainbus_attach_args * const ma = aux;
struct uba_vsoftc * const sc = device_private(self);
paddr_t paddr;
vaddr_t vaddr;
int *mapp;
int pgnum;
//int val;
int start;
aprint_normal(": Q22\n");
sc->uv_sc.uh_dev = self;
/*
* Fill in bus specific data.
*/
sc->uv_sc.uh_beforescan = qba_beforescan;
sc->uv_sc.uh_ubainit = qba_init;
sc->uv_sc.uh_iot = ma->ma_iot;
sc->uv_sc.uh_dmat = &sc->uv_dmat;
/*
* Fill in variables used by the sgmap system.
*/
sc->uv_size = QBASIZE; /* Size in bytes of Qbus space */
sc->uv_addr = QBAMAP; /* Physical address of map registers */
uba_dma_init(sc);
mapp = (int *)vax_map_physmem(QBAMAP, QBASIZE/VAX_NBPG);
//val = 0;
for (paddr = QBAMEM, pgnum = 0, start = -1;
paddr < QBAMEM + QBASIZE - 8192;
paddr += VAX_NBPG, pgnum += 1) {
//val = mapp[pgnum];
mapp[pgnum] = 0;
vaddr = vax_map_physmem(paddr, 1);
if (badaddr((void *)vaddr, 2) == 0) {
if (start < 0)
start = pgnum;
} else if (start >= 0) {
aprint_normal("sgmap exclusion at %#x - %#x\n",
start*VAX_NBPG, pgnum*VAX_NBPG - 1);
vax_sgmap_reserve(start*VAX_NBPG,
(pgnum - start)*VAX_NBPG, &sc->uv_sgmap);
start = -1;
}
vax_unmap_physmem(vaddr, 1);
//mapp[pgnum] = val;
}
vax_unmap_physmem((vaddr_t)mapp, QBASIZE/VAX_NBPG);
if (start >= 0) {
aprint_normal("sgmap exclusion at %#x - %#x\n",
start*VAX_NBPG, pgnum*VAX_NBPG - 1);
vax_sgmap_reserve(start*VAX_NBPG, (pgnum - start)*VAX_NBPG,
&sc->uv_sgmap);
}
/* reserve I/O space within Qbus */
vax_sgmap_reserve(0x3fe000, 0x400000 - 0x3fe000, &sc->uv_sgmap);
uba_attach(&sc->uv_sc, QIOPAGE);
}
/*
* Called when the QBA is set up; to enable DMA access from
* QBA devices to main memory.
*/
void
qba_beforescan(struct uba_softc *sc)
{
#define QIPCR 0x1f40
#define Q_LMEAE 0x20
bus_space_write_2(sc->uh_iot, sc->uh_ioh, QIPCR, Q_LMEAE);
}
void
qba_init(struct uba_softc *sc)
{
mtpr(0, PR_IUR);
DELAY(500000);
qba_beforescan(sc);
}