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rmixl_cpunode.c revision 1.5 
      1 /*	$NetBSD: rmixl_cpunode.c,v 1.5 2021/08/07 16:18:59 thorpej 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 1.5 2021/08/07 16:18:59 thorpej 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/malloc.h>
     52 #include <sys/device.h>
     53 
     54 #include <evbmips/rmixl/autoconf.h>
     55 
     56 #include <mips/rmi/rmixlvar.h>
     57 #include <mips/rmi/rmixl_cpunodevar.h>
     58 
     59 #include <sys/bus.h>
     60 #include "locators.h"
     61 
     62 static int  cpunode_rmixl_match(device_t, cfdata_t, void *);
     63 static void cpunode_rmixl_attach(device_t, device_t, void *);
     64 static int  cpunode_rmixl_print(void *, const char *);
     65 
     66 CFATTACH_DECL_NEW(cpunode_rmixl, sizeof(struct cpunode_softc),
     67 	cpunode_rmixl_match, cpunode_rmixl_attach, NULL, NULL);
     68 
     69 static int
     70 cpunode_rmixl_match(device_t parent, cfdata_t cf, void *aux)
     71 {
     72 	struct mainbus_attach_args *ma = aux;
     73 
     74 	if (!cpu_rmixl(mips_options.mips_cpu))
     75 		return 0;
     76 
     77 	/* XXX for now attach one node only */
     78 	if (ma->ma_node != 0)
     79 		return 0;
     80 
     81 	return 1;
     82 }
     83 
     84 static void
     85 cpunode_rmixl_attach(device_t parent, device_t self, void *aux)
     86 {
     87 	u_int sz;
     88 	u_int ncores;
     89 	struct cpunode_softc *sc = device_private(self);
     90 	struct mainbus_attach_args *ma = aux;
     91 	struct cpunode_attach_args na;
     92 	const u_int cpu_cidflags = mips_options.mips_cpu->cpu_cidflags;
     93 
     94 	aprint_naive("\n");
     95 	aprint_normal("\n");
     96 
     97 	sc->sc_dev = self;
     98 	sc->sc_node = ma->ma_node;
     99 	sc->sc_attached = 1;
    100 
    101 	switch (cpu_cidflags & MIPS_CIDFL_RMI_TYPE) {
    102 	case CIDFL_RMI_TYPE_XLR:
    103 	case CIDFL_RMI_TYPE_XLS:
    104 		/*
    105 		 * L2 is unified on XLR, XLS
    106 		 */
    107 		sz = (size_t)MIPS_CIDFL_RMI_L2SZ(cpu_cidflags);
    108 		aprint_normal("%s: %dKB/32B %d-banked 8-way set associative"
    109 			" unified L2 cache\n", device_xname(self),
    110 			sz/1024, sz/(256 * 1024));
    111 		break;
    112 	case CIDFL_RMI_TYPE_XLP:
    113 		/* TBD */
    114 		break;
    115 	}
    116 
    117 	ncores = MIPS_CIDFL_RMI_NCORES(cpu_cidflags);
    118 	aprint_normal("%s: %d %s on node\n", device_xname(self), ncores,
    119 		ncores == 1 ? "core" : "cores");
    120 
    121 	/*
    122 	 * Attach cpu (RMI thread) devices
    123 	 */
    124 	for (int i=0; i < ncores; i++) {
    125 		na.na_name = "cpucore";
    126 		na.na_node = ma->ma_node;
    127 		na.na_core = i;
    128 		config_found(self, &na, cpunode_rmixl_print, CFARGS_NONE);
    129 	}
    130 
    131 	/*
    132 	 * Attach obio
    133 	 */
    134 	na.na_name = "obio";
    135 	config_found(self, &na, NULL, CFARGS_NONE);
    136 }
    137 
    138 static int
    139 cpunode_rmixl_print(void *aux, const char *pnp)
    140 {
    141 	struct cpunode_attach_args *na = aux;
    142 
    143 	if (pnp != NULL)
    144 		aprint_normal("%s:", pnp);
    145 	aprint_normal(" core %d", na->na_core);
    146 
    147 	return (UNCONF);
    148 }
    149