1 /*-
2 * Copyright (c) 2010 Nathan Whitehorn
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: releng/10.1/sys/powerpc/ps3/platform_ps3.c 271114 2014-09-04 18:28:30Z nwhitehorn $");
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/kernel.h>
33 #include <sys/bus.h>
34 #include <sys/pcpu.h>
35 #include <sys/proc.h>
36 #include <sys/reboot.h>
37 #include <sys/smp.h>
38
39 #include <vm/vm.h>
40 #include <vm/pmap.h>
41
42 #include <machine/bus.h>
43 #include <machine/cpu.h>
44 #include <machine/hid.h>
45 #include <machine/platform.h>
46 #include <machine/platformvar.h>
47 #include <machine/pmap.h>
48 #include <machine/smp.h>
49 #include <machine/spr.h>
50 #include <machine/vmparam.h>
51
52 #include "platform_if.h"
53 #include "ps3-hvcall.h"
54
55 #ifdef SMP
56 extern void *ap_pcpu;
57 #endif
58
59 static int ps3_probe(platform_t);
60 static int ps3_attach(platform_t);
61 static void ps3_mem_regions(platform_t, struct mem_region *phys, int *physsz,
62 struct mem_region *avail, int *availsz);
63 static vm_offset_t ps3_real_maxaddr(platform_t);
64 static u_long ps3_timebase_freq(platform_t, struct cpuref *cpuref);
65 #ifdef SMP
66 static int ps3_smp_first_cpu(platform_t, struct cpuref *cpuref);
67 static int ps3_smp_next_cpu(platform_t, struct cpuref *cpuref);
68 static int ps3_smp_get_bsp(platform_t, struct cpuref *cpuref);
69 static int ps3_smp_start_cpu(platform_t, struct pcpu *cpu);
70 static struct cpu_group *ps3_smp_topo(platform_t);
71 #endif
72 static void ps3_reset(platform_t);
73 static void ps3_cpu_idle(sbintime_t);
74
75 static platform_method_t ps3_methods[] = {
76 PLATFORMMETHOD(platform_probe, ps3_probe),
77 PLATFORMMETHOD(platform_attach, ps3_attach),
78 PLATFORMMETHOD(platform_mem_regions, ps3_mem_regions),
79 PLATFORMMETHOD(platform_real_maxaddr, ps3_real_maxaddr),
80 PLATFORMMETHOD(platform_timebase_freq, ps3_timebase_freq),
81
82 #ifdef SMP
83 PLATFORMMETHOD(platform_smp_first_cpu, ps3_smp_first_cpu),
84 PLATFORMMETHOD(platform_smp_next_cpu, ps3_smp_next_cpu),
85 PLATFORMMETHOD(platform_smp_get_bsp, ps3_smp_get_bsp),
86 PLATFORMMETHOD(platform_smp_start_cpu, ps3_smp_start_cpu),
87 PLATFORMMETHOD(platform_smp_topo, ps3_smp_topo),
88 #endif
89
90 PLATFORMMETHOD(platform_reset, ps3_reset),
91
92 PLATFORMMETHOD_END
93 };
94
95 static platform_def_t ps3_platform = {
96 "ps3",
97 ps3_methods,
98 0
99 };
100
101 PLATFORM_DEF(ps3_platform);
102
103 static int
104 ps3_probe(platform_t plat)
105 {
106
107 return (BUS_PROBE_NOWILDCARD);
108 }
109
110 static int
111 ps3_attach(platform_t plat)
112 {
113
114 pmap_mmu_install("mmu_ps3", BUS_PROBE_SPECIFIC);
115 cpu_idle_hook = ps3_cpu_idle;
116
117 /* Set a breakpoint to make NULL an invalid address */
118 lv1_set_dabr(0x7 /* read and write, MMU on */, 2 /* kernel accesses */);
119
120 return (0);
121 }
122
123 void
124 ps3_mem_regions(platform_t plat, struct mem_region *phys, int *physsz,
125 struct mem_region *avail_regions, int *availsz)
126 {
127 uint64_t lpar_id, junk, ppe_id;
128
129 /* Get real mode memory region */
130 avail_regions[0].mr_start = 0;
131 lv1_get_logical_partition_id(&lpar_id);
132 lv1_get_logical_ppe_id(&ppe_id);
133 lv1_get_repository_node_value(lpar_id,
134 lv1_repository_string("bi") >> 32, lv1_repository_string("pu"),
135 ppe_id, lv1_repository_string("rm_size"),
136 &avail_regions[0].mr_size, &junk);
137
138 /* Now get extended memory region */
139 lv1_get_repository_node_value(lpar_id,
140 lv1_repository_string("bi") >> 32,
141 lv1_repository_string("rgntotal"), 0, 0,
142 &avail_regions[1].mr_size, &junk);
143
144 /* Convert to maximum amount we can allocate in 16 MB pages */
145 avail_regions[1].mr_size -= avail_regions[0].mr_size;
146 avail_regions[1].mr_size -= avail_regions[1].mr_size % (16*1024*1024);
147
148 /* Allocate extended memory region */
149 lv1_allocate_memory(avail_regions[1].mr_size, 24 /* 16 MB pages */,
150 0, 0x04 /* any address */, &avail_regions[1].mr_start, &junk);
151
152 *availsz = 2;
153
154 if (phys != NULL) {
155 memcpy(phys, avail_regions, sizeof(*phys)*2);
156 *physsz = 2;
157 }
158 }
159
160 static u_long
161 ps3_timebase_freq(platform_t plat, struct cpuref *cpuref)
162 {
163 uint64_t ticks, node_id, junk;
164
165 lv1_get_repository_node_value(PS3_LPAR_ID_PME,
166 lv1_repository_string("be") >> 32, 0, 0, 0, &node_id, &junk);
167 lv1_get_repository_node_value(PS3_LPAR_ID_PME,
168 lv1_repository_string("be") >> 32, node_id,
169 lv1_repository_string("clock"), 0, &ticks, &junk);
170
171 return (ticks);
172 }
173
174 #ifdef SMP
175 static int
176 ps3_smp_first_cpu(platform_t plat, struct cpuref *cpuref)
177 {
178
179 cpuref->cr_cpuid = 0;
180 cpuref->cr_hwref = cpuref->cr_cpuid;
181
182 return (0);
183 }
184
185 static int
186 ps3_smp_next_cpu(platform_t plat, struct cpuref *cpuref)
187 {
188
189 if (cpuref->cr_cpuid >= 1)
190 return (ENOENT);
191
192 cpuref->cr_cpuid++;
193 cpuref->cr_hwref = cpuref->cr_cpuid;
194
195 return (0);
196 }
197
198 static int
199 ps3_smp_get_bsp(platform_t plat, struct cpuref *cpuref)
200 {
201
202 cpuref->cr_cpuid = 0;
203 cpuref->cr_hwref = cpuref->cr_cpuid;
204
205 return (0);
206 }
207
208 static int
209 ps3_smp_start_cpu(platform_t plat, struct pcpu *pc)
210 {
211 /* loader(8) is spinning on 0x40 == 0 right now */
212 uint32_t *secondary_spin_sem = (uint32_t *)(0x40);
213 int timeout;
214
215 if (pc->pc_hwref != 1)
216 return (ENXIO);
217
218 ap_pcpu = pc;
219 *secondary_spin_sem = 1;
220 powerpc_sync();
221 DELAY(1);
222
223 timeout = 10000;
224 while (!pc->pc_awake && timeout--)
225 DELAY(100);
226
227 return ((pc->pc_awake) ? 0 : EBUSY);
228 }
229
230 static struct cpu_group *
231 ps3_smp_topo(platform_t plat)
232 {
233 return (smp_topo_1level(CG_SHARE_L1, 2, CG_FLAG_SMT));
234 }
235 #endif
236
237 static void
238 ps3_reset(platform_t plat)
239 {
240 lv1_panic(1);
241 }
242
243 static vm_offset_t
244 ps3_real_maxaddr(platform_t plat)
245 {
246 struct mem_region *phys, *avail;
247 int nphys, navail;
248
249 mem_regions(&phys, &nphys, &avail, &navail);
250
251 return (phys[0].mr_start + phys[0].mr_size);
252 }
253
254 static void
255 ps3_cpu_idle(sbintime_t sbt)
256 {
257 lv1_pause(0);
258 }
259
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