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      1  1.6  riastrad /*	$NetBSD: bonito_mainbus.c,v 1.6 2022/03/03 06:27:21 riastradh Exp $	*/
      2  1.1    bouyer 
      3  1.1    bouyer /*-
      4  1.1    bouyer  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  1.1    bouyer  * All rights reserved.
      6  1.1    bouyer  *
      7  1.1    bouyer  * This code is derived from software contributed to The NetBSD Foundation
      8  1.1    bouyer  * by Jason R. Thorpe.
      9  1.1    bouyer  *
     10  1.1    bouyer  * Redistribution and use in source and binary forms, with or without
     11  1.1    bouyer  * modification, are permitted provided that the following conditions
     12  1.1    bouyer  * are met:
     13  1.1    bouyer  * 1. Redistributions of source code must retain the above copyright
     14  1.1    bouyer  *    notice, this list of conditions and the following disclaimer.
     15  1.1    bouyer  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.1    bouyer  *    notice, this list of conditions and the following disclaimer in the
     17  1.1    bouyer  *    documentation and/or other materials provided with the distribution.
     18  1.1    bouyer  *
     19  1.1    bouyer  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  1.1    bouyer  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  1.1    bouyer  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  1.1    bouyer  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  1.1    bouyer  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  1.1    bouyer  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  1.1    bouyer  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  1.1    bouyer  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  1.1    bouyer  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  1.1    bouyer  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  1.1    bouyer  * POSSIBILITY OF SUCH DAMAGE.
     30  1.1    bouyer  */
     31  1.1    bouyer 
     32  1.1    bouyer #include <sys/cdefs.h>
     33  1.6  riastrad __KERNEL_RCSID(0, "$NetBSD: bonito_mainbus.c,v 1.6 2022/03/03 06:27:21 riastradh Exp $");
     34  1.1    bouyer 
     35  1.1    bouyer #include <sys/param.h>
     36  1.1    bouyer #include <sys/systm.h>
     37  1.1    bouyer #include <sys/conf.h>
     38  1.1    bouyer #include <sys/reboot.h>
     39  1.1    bouyer #include <sys/device.h>
     40  1.1    bouyer 
     41  1.1    bouyer #include <sys/bus.h>
     42  1.1    bouyer 
     43  1.3  macallan #include <mips/cpuregs.h>
     44  1.1    bouyer #include <mips/bonito/bonitoreg.h>
     45  1.1    bouyer 
     46  1.1    bouyer #include <evbmips/loongson/autoconf.h>
     47  1.1    bouyer #include <evbmips/loongson/loongson_bus_defs.h>
     48  1.1    bouyer #include <dev/pci/pcivar.h>
     49  1.1    bouyer 
     50  1.1    bouyer static int	bonito_mainbus_match(device_t, cfdata_t, void *);
     51  1.1    bouyer static void	bonito_mainbus_attach(device_t, device_t, void *);
     52  1.1    bouyer 
     53  1.1    bouyer CFATTACH_DECL_NEW(bonito_mainbus, 0,
     54  1.1    bouyer     bonito_mainbus_match, bonito_mainbus_attach, NULL, NULL);
     55  1.1    bouyer 
     56  1.1    bouyer extern struct cfdriver bonito_cd;
     57  1.1    bouyer 
     58  1.1    bouyer int
     59  1.1    bouyer bonito_mainbus_match(device_t parent, cfdata_t cf, void *aux)
     60  1.1    bouyer {
     61  1.1    bouyer 	struct mainbus_attach_args * const maa = aux;
     62  1.1    bouyer 
     63  1.1    bouyer 	if (strcmp(maa->maa_name, bonito_cd.cd_name) == 0)
     64  1.1    bouyer 		return (1);
     65  1.1    bouyer 
     66  1.1    bouyer 	return (0);
     67  1.1    bouyer }
     68  1.1    bouyer 
     69  1.1    bouyer void
     70  1.1    bouyer bonito_mainbus_attach(device_t parent, device_t self, void *aux)
     71  1.1    bouyer {
     72  1.1    bouyer 	struct pcibus_attach_args pba;
     73  1.1    bouyer 	pcireg_t rev;
     74  1.2    nonaka 	bool compatible;
     75  1.1    bouyer 
     76  1.6  riastrad 	device_set_private(self, __UNCONST(&sys_platform->bonito_config));
     77  1.1    bouyer 
     78  1.1    bouyer 	/*
     79  1.2    nonaka 	 * Loongson 2F processors do not use a real Bonito64 chip but
     80  1.2    nonaka 	 * their own derivative, which is no longer 100% compatible.
     81  1.2    nonaka 	 * We need to make sure we never try to access an unimplemented
     82  1.2    nonaka 	 * register...
     83  1.2    nonaka 	 */
     84  1.2    nonaka 	if (loongson_ver >= 0x2f)
     85  1.2    nonaka 		compatible = false;
     86  1.2    nonaka 	else
     87  1.2    nonaka 		compatible = true;
     88  1.2    nonaka 
     89  1.2    nonaka 	/*
     90  1.1    bouyer 	 * There is only one PCI controller on a Loongson chip.
     91  1.1    bouyer 	 */
     92  1.1    bouyer 
     93  1.1    bouyer 	rev = PCI_REVISION(REGVAL(BONITO_PCICLASS));
     94  1.2    nonaka 	if (compatible) {
     95  1.2    nonaka 		aprint_normal(": BONITO Memory and PCI controller,"
     96  1.2    nonaka 		    " %s rev. %d.%d\n", BONITO_REV_FPGA(rev) ? "FPGA" : "ASIC",
     97  1.2    nonaka 		    BONITO_REV_MAJOR(rev), BONITO_REV_MINOR(rev));
     98  1.2    nonaka 	} else {
     99  1.2    nonaka 		aprint_normal(": Memory and PCI-X controller, rev. %d\n",
    100  1.2    nonaka 		    PCI_REVISION(rev));
    101  1.2    nonaka 	}
    102  1.1    bouyer 
    103  1.2    nonaka 	/*
    104  1.2    nonaka 	 * Attach PCI bus.
    105  1.2    nonaka 	 */
    106  1.1    bouyer 
    107  1.1    bouyer 	pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY;
    108  1.1    bouyer 	pba.pba_bus = 0;
    109  1.1    bouyer 	pba.pba_bridgetag = NULL;
    110  1.1    bouyer 
    111  1.1    bouyer 	pba.pba_iot = &bonito_iot;
    112  1.1    bouyer 	pba.pba_memt = &bonito_memt;
    113  1.1    bouyer 	pba.pba_dmat = &bonito_dmat;
    114  1.1    bouyer 	pba.pba_dmat64 = NULL;
    115  1.1    bouyer 	pba.pba_pc = &bonito_pc;
    116  1.1    bouyer 
    117  1.5   thorpej 	config_found(self, &pba, pcibusprint, CFARGS_NONE);
    118  1.1    bouyer }
    119