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
cpunode_rmixl_match(device_t parent,cfdata_t cf,void * aux)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
cpunode_rmixl_attach(device_t parent,device_t self,void * aux)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
cpunode_rmixl_print(void * aux,const char * pnp)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