diff options
Diffstat (limited to 'sys/arch/vax/mbus/uba_mbus.c')
| -rw-r--r-- | sys/arch/vax/mbus/uba_mbus.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/sys/arch/vax/mbus/uba_mbus.c b/sys/arch/vax/mbus/uba_mbus.c new file mode 100644 index 00000000000..ed78ffdcf2b --- /dev/null +++ b/sys/arch/vax/mbus/uba_mbus.c @@ -0,0 +1,174 @@ +/* $OpenBSD: uba_mbus.c,v 1.1 2008/08/18 23:19:25 miod Exp $ */ + +/* + * Copyright (c) 2008 Miodrag Vallat. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +/* + * Copyright (c) 1996 Jonathan Stone. + * Copyright (c) 1994, 1996 Ludd, University of Lule}, Sweden. + * 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 + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/device.h> + +#include <machine/bus.h> +#include <machine/cpu.h> +#include <machine/mtpr.h> +#include <machine/sgmap.h> + +#include <vax/mbus/mbusreg.h> +#include <vax/mbus/mbusvar.h> + +#include <arch/vax/qbus/ubavar.h> +#include <arch/vax/uba/uba_common.h> +#include <arch/vax/uba/ubareg.h> + +#define QBASIZE (8192 * VAX_NBPG) + +void uba_mbus_attach(struct device *, struct device *, void *); +int uba_mbus_match(struct device *, void *, void *); + +const struct cfattach uba_mbus_ca = { + sizeof(struct uba_vsoftc), uba_mbus_match, uba_mbus_attach +}; + +void uba_mbus_beforescan(struct uba_softc*); +void uba_mbus_init(struct uba_softc*); + +extern struct vax_bus_space vax_mem_bus_space; + +int +uba_mbus_match(struct device *parent, void *vcf, void *aux) +{ + struct mbus_attach_args *maa = (struct mbus_attach_args *)aux; + + /* + * There can only be one QBus adapter (because it uses range-mapped + * MBus I/O), and it has to be in slot zero for connectivity reasons. + */ + if (maa->maa_mid != 0) + return 0; + + if (maa->maa_class == CLASS_BA && maa->maa_interface == INTERFACE_FBIC) + return 1; + + return 0; +} + +void +uba_mbus_attach(struct device *parent, struct device *self, void *aux) +{ + struct mbus_attach_args *maa = (struct mbus_attach_args *)aux; + struct uba_vsoftc *sc = (void *)self; + paddr_t modaddr; + vaddr_t fbic; + + printf(": Q22\n"); + + /* + * Configure M-Bus I/O range. + * + * This will map the sgmap at 2008xxxx (QBAMAP), and the doorbell + * registers at 2000xxxx (QIOPAGE). + */ + modaddr = MBUS_SLOT_BASE(maa->maa_mid); + fbic = vax_map_physmem(modaddr + FBIC_BASE, 1); + if (fbic == NULL) { + printf("%s: can't setup M-bus range register\n"); + return; + } + *(uint32_t *)(fbic + FBIC_RANGE) = + (HOST_TO_MBUS(QBAMAP & RANGE_MATCH)) | RANGE_ENABLE | + ((QBAMAP ^ QIOPAGE) >> 16); + vax_unmap_physmem(fbic, 1); + + /* + * There is nothing special to do to enable interrupt routing; + * the CQBIC will route Q-bus interrupts to the C-bus, and + * mbus(4) has already configured our FBIC interrupt registers + * to route C-bus interrupts to the M-bus (whether they are + * generated by the FBIC or by the Q-bus), which will make them + * visible to the processor. + * + * Note that we do not enable the boards' FBIC memory error + * interrupt yet. + */ + + /* + * Fill in bus specific data. + */ + sc->uv_sc.uh_beforescan = uba_mbus_beforescan; + sc->uv_sc.uh_ubainit = uba_mbus_init; + sc->uv_sc.uh_iot = &vax_mem_bus_space; + 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); + uba_attach(&sc->uv_sc, QIOPAGE); +} + +/* + * Called when the CQBIC is set up; to enable DMA access from + * Q-bus devices to main memory. + */ +void +uba_mbus_beforescan(sc) + struct uba_softc *sc; +{ + bus_space_write_2(sc->uh_tag, sc->uh_ioh, QIPCR, Q_LMEAE); +} + +void +uba_mbus_init(sc) + struct uba_softc *sc; +{ + DELAY(500000); + uba_mbus_beforescan(sc); +} |