platform_ps3.c revision 266020 
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: stable/10/sys/powerpc/ps3/platform_ps3.c 266020 2014-05-14 14:17:51Z ian $");
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
56extern void *ap_pcpu;
57#endif
58
59static int ps3_probe(platform_t);
60static int ps3_attach(platform_t);
61static void ps3_mem_regions(platform_t, struct mem_region *phys, int *physsz,
62    struct mem_region *avail, int *availsz);
63static vm_offset_t ps3_real_maxaddr(platform_t);
64static u_long ps3_timebase_freq(platform_t, struct cpuref *cpuref);
65#ifdef SMP
66static int ps3_smp_first_cpu(platform_t, struct cpuref *cpuref);
67static int ps3_smp_next_cpu(platform_t, struct cpuref *cpuref);
68static int ps3_smp_get_bsp(platform_t, struct cpuref *cpuref);
69static int ps3_smp_start_cpu(platform_t, struct pcpu *cpu);
70static struct cpu_group *ps3_smp_topo(platform_t);
71#endif
72static void ps3_reset(platform_t);
73static void ps3_cpu_idle(sbintime_t);
74
75static 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
95static platform_def_t ps3_platform = {
96	"ps3",
97	ps3_methods,
98	0
99};
100
101PLATFORM_DEF(ps3_platform);
102
103static int
104ps3_probe(platform_t plat)
105{
106
107	return (BUS_PROBE_NOWILDCARD);
108}
109
110static int
111ps3_attach(platform_t plat)
112{
113	uint64_t junk;
114	int count;
115	struct mem_region avail_regions[2];
116
117	ps3_mem_regions(plat, NULL, NULL, avail_regions, &count);
118
119	lv1_allocate_memory(avail_regions[1].mr_size, 24 /* 16 MB pages */,
120	    0, 0x04 /* any address */, &avail_regions[1].mr_start, &junk);
121
122	pmap_mmu_install("mmu_ps3", BUS_PROBE_SPECIFIC);
123	cpu_idle_hook = ps3_cpu_idle;
124
125	/* Set a breakpoint to make NULL an invalid address */
126	lv1_set_dabr(0x7 /* read and write, MMU on */, 2 /* kernel accesses */);
127
128	return (0);
129}
130
131void
132ps3_mem_regions(platform_t plat, struct mem_region *phys, int *physsz,
133    struct mem_region *avail_regions, int *availsz)
134{
135	uint64_t lpar_id, junk, ppe_id;
136
137	/* Get real mode memory region */
138	avail_regions[0].mr_start = 0;
139	lv1_get_logical_partition_id(&lpar_id);
140	lv1_get_logical_ppe_id(&ppe_id);
141	lv1_get_repository_node_value(lpar_id,
142	    lv1_repository_string("bi") >> 32, lv1_repository_string("pu"),
143	    ppe_id, lv1_repository_string("rm_size"),
144	    &avail_regions[0].mr_size, &junk);
145
146	/* Now get extended memory region */
147	lv1_get_repository_node_value(lpar_id,
148	    lv1_repository_string("bi") >> 32,
149	    lv1_repository_string("rgntotal"), 0, 0,
150	    &avail_regions[1].mr_size, &junk);
151
152	/* Convert to maximum amount we can allocate in 16 MB pages */
153	avail_regions[1].mr_size -= avail_regions[0].mr_size;
154	avail_regions[1].mr_size -= avail_regions[1].mr_size % (16*1024*1024);
155	*availsz = 2;
156
157	if (phys != NULL) {
158		memcpy(phys, avail_regions, sizeof(*phys)*2);
159		*physsz = 2;
160	}
161}
162
163static u_long
164ps3_timebase_freq(platform_t plat, struct cpuref *cpuref)
165{
166	uint64_t ticks, node_id, junk;
167
168	lv1_get_repository_node_value(PS3_LPAR_ID_PME,
169	    lv1_repository_string("be") >> 32, 0, 0, 0, &node_id, &junk);
170	lv1_get_repository_node_value(PS3_LPAR_ID_PME,
171	    lv1_repository_string("be") >> 32, node_id,
172	    lv1_repository_string("clock"), 0, &ticks, &junk);
173
174	return (ticks);
175}
176
177#ifdef SMP
178static int
179ps3_smp_first_cpu(platform_t plat, struct cpuref *cpuref)
180{
181
182	cpuref->cr_cpuid = 0;
183	cpuref->cr_hwref = cpuref->cr_cpuid;
184
185	return (0);
186}
187
188static int
189ps3_smp_next_cpu(platform_t plat, struct cpuref *cpuref)
190{
191
192	if (cpuref->cr_cpuid >= 1)
193		return (ENOENT);
194
195	cpuref->cr_cpuid++;
196	cpuref->cr_hwref = cpuref->cr_cpuid;
197
198	return (0);
199}
200
201static int
202ps3_smp_get_bsp(platform_t plat, struct cpuref *cpuref)
203{
204
205	cpuref->cr_cpuid = 0;
206	cpuref->cr_hwref = cpuref->cr_cpuid;
207
208	return (0);
209}
210
211static int
212ps3_smp_start_cpu(platform_t plat, struct pcpu *pc)
213{
214	/* loader(8) is spinning on 0x40 == 0 right now */
215	uint32_t *secondary_spin_sem = (uint32_t *)(0x40);
216	int timeout;
217
218	if (pc->pc_hwref != 1)
219		return (ENXIO);
220
221	ap_pcpu = pc;
222	*secondary_spin_sem = 1;
223	powerpc_sync();
224	DELAY(1);
225
226	timeout = 10000;
227	while (!pc->pc_awake && timeout--)
228		DELAY(100);
229
230	return ((pc->pc_awake) ? 0 : EBUSY);
231}
232
233static struct cpu_group *
234ps3_smp_topo(platform_t plat)
235{
236	return (smp_topo_1level(CG_SHARE_L1, 2, CG_FLAG_SMT));
237}
238#endif
239
240static void
241ps3_reset(platform_t plat)
242{
243	lv1_panic(1);
244}
245
246static vm_offset_t
247ps3_real_maxaddr(platform_t plat)
248{
249	struct mem_region *phys, *avail;
250	int nphys, navail;
251
252	mem_regions(&phys, &nphys, &avail, &navail);
253
254	return (phys[0].mr_start + phys[0].mr_size);
255}
256
257static void
258ps3_cpu_idle(sbintime_t sbt)
259{
260	lv1_pause(0);
261}
262
263