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      1 /*	$NetBSD: rmixl_cpunode.c,v 1.6 2022/09/29 07:00:47 skrll Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994,1995 Mark Brinicombe.
      5  * Copyright (c) 1994 Brini.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by Brini.
     19  * 4. The name of the company nor the name of the author may be used to
     20  *    endorse or promote products derived from this software without specific
     21  *    prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
     24  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     26  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     27  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     28  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     29  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  * RiscBSD kernel project
     36  *
     37  * mainbus.c
     38  *
     39  * cpunode configuration
     40  *
     41  * Created      : 15/12/94
     42  */
     43 
     44 #include <sys/cdefs.h>
     45 __KERNEL_RCSID(0, "$NetBSD: rmixl_cpunode.c,v 1.6 2022/09/29 07:00:47 skrll Exp $");
     46 
     47 #include <sys/param.h>
     48 #include <sys/systm.h>
     49 #include <sys/kernel.h>
     50 #include <sys/conf.h>
     51 #include <sys/device.h>
     52 
     53 #include <evbmips/rmixl/autoconf.h>
     54 
     55 #include <mips/rmi/rmixlvar.h>
     56 #include <mips/rmi/rmixl_cpunodevar.h>
     57 
     58 #include <sys/bus.h>
     59 #include "locators.h"
     60 
     61 static int  cpunode_rmixl_match(device_t, cfdata_t, void *);
     62 static void cpunode_rmixl_attach(device_t, device_t, void *);
     63 static int  cpunode_rmixl_print(void *, const char *);
     64 
     65 CFATTACH_DECL_NEW(cpunode_rmixl, sizeof(struct cpunode_softc),
     66 	cpunode_rmixl_match, cpunode_rmixl_attach, NULL, NULL);
     67 
     68 static int
     69 cpunode_rmixl_match(device_t parent, cfdata_t cf, void *aux)
     70 {
     71 	struct mainbus_attach_args *ma = aux;
     72 
     73 	if (!cpu_rmixl(mips_options.mips_cpu))
     74 		return 0;
     75 
     76 	/* XXX for now attach one node only */
     77 	if (ma->ma_node != 0)
     78 		return 0;
     79 
     80 	return 1;
     81 }
     82 
     83 static void
     84 cpunode_rmixl_attach(device_t parent, device_t self, void *aux)
     85 {
     86 	u_int sz;
     87 	u_int ncores;
     88 	struct cpunode_softc *sc = device_private(self);
     89 	struct mainbus_attach_args *ma = aux;
     90 	struct cpunode_attach_args na;
     91 	const u_int cpu_cidflags = mips_options.mips_cpu->cpu_cidflags;
     92 
     93 	aprint_naive("\n");
     94 	aprint_normal("\n");
     95 
     96 	sc->sc_dev = self;
     97 	sc->sc_node = ma->ma_node;
     98 	sc->sc_attached = 1;
     99 
    100 	switch (cpu_cidflags & MIPS_CIDFL_RMI_TYPE) {
    101 	case CIDFL_RMI_TYPE_XLR:
    102 	case CIDFL_RMI_TYPE_XLS:
    103 		/*
    104 		 * L2 is unified on XLR, XLS
    105 		 */
    106 		sz = (size_t)MIPS_CIDFL_RMI_L2SZ(cpu_cidflags);
    107 		aprint_normal("%s: %dKB/32B %d-banked 8-way set associative"
    108 			" unified L2 cache\n", device_xname(self),
    109 			sz/1024, sz/(256 * 1024));
    110 		break;
    111 	case CIDFL_RMI_TYPE_XLP:
    112 		/* TBD */
    113 		break;
    114 	}
    115 
    116 	ncores = MIPS_CIDFL_RMI_NCORES(cpu_cidflags);
    117 	aprint_normal("%s: %d %s on node\n", device_xname(self), ncores,
    118 		ncores == 1 ? "core" : "cores");
    119 
    120 	/*
    121 	 * Attach cpu (RMI thread) devices
    122 	 */
    123 	for (int i=0; i < ncores; i++) {
    124 		na.na_name = "cpucore";
    125 		na.na_node = ma->ma_node;
    126 		na.na_core = i;
    127 		config_found(self, &na, cpunode_rmixl_print, CFARGS_NONE);
    128 	}
    129 
    130 	/*
    131 	 * Attach obio
    132 	 */
    133 	na.na_name = "obio";
    134 	config_found(self, &na, NULL, CFARGS_NONE);
    135 }
    136 
    137 static int
    138 cpunode_rmixl_print(void *aux, const char *pnp)
    139 {
    140 	struct cpunode_attach_args *na = aux;
    141 
    142 	if (pnp != NULL)
    143 		aprint_normal("%s:", pnp);
    144 	aprint_normal(" core %d", na->na_core);
    145 
    146 	return (UNCONF);
    147 }
    148