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206 lines
6.8 KiB
C
206 lines
6.8 KiB
C
/* $NetBSD: uba_mainbus.c,v 1.12 2015/07/05 04:53:26 matt Exp $ */
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/*
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* Copyright (c) 1982, 1986 The Regents of the University of California.
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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. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)uba.c 7.10 (Berkeley) 12/16/90
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* @(#)autoconf.c 7.20 (Berkeley) 5/9/91
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*/
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/*
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* Copyright (c) 1996 Jonathan Stone.
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* Copyright (c) 1994, 1996 Ludd, University of Lule}, Sweden.
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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 the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)uba.c 7.10 (Berkeley) 12/16/90
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* @(#)autoconf.c 7.20 (Berkeley) 5/9/91
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: uba_mainbus.c,v 1.12 2015/07/05 04:53:26 matt Exp $");
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#define _VAX_BUS_DMA_PRIVATE
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/cpu.h>
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#include <sys/device.h>
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#include <machine/nexus.h>
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#include <machine/sgmap.h>
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#include <machine/mainbus.h>
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#include <dev/qbus/ubavar.h>
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#include <vax/uba/uba_common.h>
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#include "ioconf.h"
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/* Some Qbus-specific defines */
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#define QBASIZE (8192 * VAX_NBPG)
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#define QBAMAP 0x20088000
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#define QBAMEM 0x30000000
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#define QIOPAGE 0x20000000
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/*
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* The Q22 bus is the main IO bus on MicroVAX II/MicroVAX III systems.
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* It has an address space of 4MB (22 address bits), therefore the name,
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* and is hardware compatible with all 16 and 18 bits Q-bus devices.
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*/
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static int qba_match(device_t, cfdata_t, void *);
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static void qba_attach(device_t, device_t, void *);
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static void qba_beforescan(struct uba_softc*);
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static void qba_init(struct uba_softc*);
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CFATTACH_DECL_NEW(uba_mainbus, sizeof(struct uba_vsoftc),
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qba_match, qba_attach, NULL, NULL);
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extern struct vax_bus_space vax_mem_bus_space;
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int
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qba_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct mainbus_attach_args * const ma = aux;
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return !strcmp(uba_cd.cd_name, ma->ma_type);
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}
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void
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qba_attach(device_t parent, device_t self, void *aux)
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{
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struct mainbus_attach_args * const ma = aux;
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struct uba_vsoftc * const sc = device_private(self);
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paddr_t paddr;
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vaddr_t vaddr;
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int *mapp;
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int pgnum;
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//int val;
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int start;
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aprint_normal(": Q22\n");
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sc->uv_sc.uh_dev = self;
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/*
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* Fill in bus specific data.
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*/
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sc->uv_sc.uh_beforescan = qba_beforescan;
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sc->uv_sc.uh_ubainit = qba_init;
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sc->uv_sc.uh_iot = ma->ma_iot;
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sc->uv_sc.uh_dmat = &sc->uv_dmat;
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/*
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* Fill in variables used by the sgmap system.
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*/
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sc->uv_size = QBASIZE; /* Size in bytes of Qbus space */
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sc->uv_addr = QBAMAP; /* Physical address of map registers */
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uba_dma_init(sc);
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mapp = (int *)vax_map_physmem(QBAMAP, QBASIZE/VAX_NBPG);
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//val = 0;
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for (paddr = QBAMEM, pgnum = 0, start = -1;
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paddr < QBAMEM + QBASIZE - 8192;
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paddr += VAX_NBPG, pgnum += 1) {
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//val = mapp[pgnum];
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mapp[pgnum] = 0;
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vaddr = vax_map_physmem(paddr, 1);
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if (badaddr((void *)vaddr, 2) == 0) {
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if (start < 0)
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start = pgnum;
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} else if (start >= 0) {
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aprint_normal("sgmap exclusion at %#x - %#x\n",
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start*VAX_NBPG, pgnum*VAX_NBPG - 1);
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vax_sgmap_reserve(start*VAX_NBPG,
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(pgnum - start)*VAX_NBPG, &sc->uv_sgmap);
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start = -1;
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}
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vax_unmap_physmem(vaddr, 1);
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//mapp[pgnum] = val;
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}
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vax_unmap_physmem((vaddr_t)mapp, QBASIZE/VAX_NBPG);
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if (start >= 0) {
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aprint_normal("sgmap exclusion at %#x - %#x\n",
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start*VAX_NBPG, pgnum*VAX_NBPG - 1);
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vax_sgmap_reserve(start*VAX_NBPG, (pgnum - start)*VAX_NBPG,
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&sc->uv_sgmap);
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}
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/* reserve I/O space within Qbus */
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vax_sgmap_reserve(0x3fe000, 0x400000 - 0x3fe000, &sc->uv_sgmap);
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uba_attach(&sc->uv_sc, QIOPAGE);
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}
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/*
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* Called when the QBA is set up; to enable DMA access from
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* QBA devices to main memory.
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*/
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void
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qba_beforescan(struct uba_softc *sc)
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{
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#define QIPCR 0x1f40
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#define Q_LMEAE 0x20
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bus_space_write_2(sc->uh_tag, sc->uh_ioh, QIPCR, Q_LMEAE);
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}
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void
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qba_init(struct uba_softc *sc)
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{
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mtpr(0, PR_IUR);
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DELAY(500000);
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qba_beforescan(sc);
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}
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