/* $NetBSD: sbbrz.c,v 1.9 2022/03/03 06:27:21 riastradh Exp $ */
/*
* Copyright 2000, 2001
* Broadcom Corporation. All rights reserved.
*
* This software is furnished under license and may be used and copied only
* in accordance with the following terms and conditions. Subject to these
* conditions, you may download, copy, install, use, modify and distribute
* modified or unmodified copies of this software in source and/or binary
* form. No title or ownership is transferred hereby.
*
* 1) Any source code used, modified or distributed must reproduce and
* retain this copyright notice and list of conditions as they appear in
* the source file.
*
* 2) No right is granted to use any trade name, trademark, or logo of
* Broadcom Corporation. Neither the "Broadcom Corporation" name nor any
* trademark or logo of Broadcom Corporation may be used to endorse or
* promote products derived from this software without the prior written
* permission of Broadcom Corporation.
*
* 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE
* FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE
* LIABLE FOR 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), EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* from: $NetBSD: apecs.c,v 1.38 2000/06/29 08:58:45 mrg Exp */
/*-
* Copyright (c) 2000, 2010 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* Driver for SB-1250 I/O bridge 0, which provides the PCI and LDT
* interfaces.
*/
#define _MIPS_BUS_DMA_PRIVATE
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <mips/locore.h>
#include <mips/sibyte/include/sb1250_regs.h>
#include <mips/sibyte/include/sb1250_scd.h>
#include <mips/sibyte/include/zbbusvar.h>
#include <mips/sibyte/pci/sbbrzvar.h>
static int sbbrz_match(device_t, cfdata_t, void *);
static void sbbrz_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(sbbrz, 0, sbbrz_match, sbbrz_attach, NULL, NULL);
static int sbbrz_print(void *, const char *pnp);
/* There can be only one. */
struct sbbrz_softc sbbrz_softc;
static int
sbbrz_match(device_t parent, cfdata_t match, void *aux)
{
struct zbbus_attach_args *zap = aux;
if (zap->za_locs.za_type != ZBBUS_ENTTYPE_BRZ)
return (0);
if (sbbrz_softc.sc_dev != NULL)
return (0);
return 1;
}
/*
* Set up the chipset's function pointers.
*/
static void
sbbrz_init(struct sbbrz_softc *sc)
{
int error;
sbbrz_bus_io_init(&sc->sc_iot, sc);
sbbrz_bus_mem_init(&sc->sc_memt, sc);
bus_dma_tag_t t = &sc->sc_dmat64;
t->_cookie = sc;
t->_wbase = 0;
t->_bounce_alloc_lo = 0;
t->_bounce_alloc_hi = 0;
t->_dmamap_ops = mips_bus_dmamap_ops;
t->_dmamem_ops = mips_bus_dmamem_ops;
t->_dmatag_ops = mips_bus_dmatag_ops;
error = bus_dmatag_subregion(t, 0, __MASK(32), &sc->sc_dmat32, 0);
if (error)
panic("%s: failed to create 32bit dma tag: %d",
__func__, error);
sbbrz_pci_init(&sc->sc_pc, sc);
}
static void
sbbrz_attach(device_t parent, device_t self, void *aux)
{
struct sbbrz_softc *sc = &sbbrz_softc;
struct pcibus_attach_args pba;
uint64_t regval;
bool host;
/* Tell the user whether it's host or device mode. */
regval = mips3_ld((register_t)MIPS_PHYS_TO_KSEG1(A_SCD_SYSTEM_CFG));
host = (regval & M_SYS_PCI_HOST) != 0;
aprint_normal(": %s pci mode\n", host ? "host" : "device");
/* note that we've attached the bridge; can't have two. */
sc->sc_dev = self;
device_set_private(self, sc);
/*
* set up the bridge's info; done once at console init time
* (maybe), but doesn't hurt to do twice.
*/
sbbrz_init(sc);
#if _has_pba_busname
pba.pba_busname = "pci";
#endif
pba.pba_iot = &sc->sc_iot;
pba.pba_memt = &sc->sc_memt;
pba.pba_dmat64 = &sc->sc_dmat64;
pba.pba_dmat = sc->sc_dmat32;
pba.pba_pc = &sc->sc_pc;
pba.pba_bus = 0;
pba.pba_bridgetag = NULL;
pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY |
PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY;
config_found(self, &pba, sbbrz_print, CFARGS_NONE);
}
static int
sbbrz_print(void *aux, const char *pnp)
{
struct pcibus_attach_args *pba = aux;
/* only PCIs can attach to sbbrz; easy. */
if (pnp)
#if _has_pba_busname
aprint_normal("%s at %s\n", pba->pba_busname, pnp);
#else
aprint_normal("\n* sbbrz_pci at %s", pnp);
#endif
aprint_normal(" bus %d", pba->pba_bus);
return (UNCONF);
}