sys/powerpc/ps3/platform_ps3.c

   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("$FreeBSD$");
  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/smp.h>
  48 #include <machine/spr.h>
  49 #include <machine/vmparam.h>
  50
  51 #include <dev/ofw/openfirm.h>
  52
  53 #include "platform_if.h"
  54 #include "ps3-hvcall.h"
  55
  56 #ifdef SMP
  57 extern void *ap_pcpu;
  58 #endif
  59
  60 static int ps3_probe(platform_t);
  61 static int ps3_attach(platform_t);
  62 static void ps3_mem_regions(platform_t, struct mem_region *phys, int *physsz,
  63     struct mem_region *avail, int *availsz);
  64 static vm_offset_t ps3_real_maxaddr(platform_t);
  65 static u_long ps3_timebase_freq(platform_t, struct cpuref *cpuref);
  66 #ifdef SMP
  67 static int ps3_smp_first_cpu(platform_t, struct cpuref *cpuref);
  68 static int ps3_smp_next_cpu(platform_t, struct cpuref *cpuref);
  69 static int ps3_smp_get_bsp(platform_t, struct cpuref *cpuref);
  70 static int ps3_smp_start_cpu(platform_t, struct pcpu *cpu);
  71 static struct cpu_group *ps3_smp_topo(platform_t);
  72 #endif
  73 static void ps3_reset(platform_t);
  74 static void ps3_cpu_idle(sbintime_t);
  75
  76 static platform_method_t ps3_methods[] = {
  77         PLATFORMMETHOD(platform_probe,          ps3_probe),
  78         PLATFORMMETHOD(platform_attach,         ps3_attach),
  79         PLATFORMMETHOD(platform_mem_regions,    ps3_mem_regions),
  80         PLATFORMMETHOD(platform_real_maxaddr,   ps3_real_maxaddr),
  81         PLATFORMMETHOD(platform_timebase_freq,  ps3_timebase_freq),
  82
  83 #ifdef SMP
  84         PLATFORMMETHOD(platform_smp_first_cpu,  ps3_smp_first_cpu),
  85         PLATFORMMETHOD(platform_smp_next_cpu,   ps3_smp_next_cpu),
  86         PLATFORMMETHOD(platform_smp_get_bsp,    ps3_smp_get_bsp),
  87         PLATFORMMETHOD(platform_smp_start_cpu,  ps3_smp_start_cpu),
  88         PLATFORMMETHOD(platform_smp_topo,       ps3_smp_topo),
  89 #endif
  90
  91         PLATFORMMETHOD(platform_reset,          ps3_reset),
  92
  93         PLATFORMMETHOD_END
  94 };
  95
  96 static platform_def_t ps3_platform = {
  97         "ps3",
  98         ps3_methods,
  99         0
 100 };
 101
 102 PLATFORM_DEF(ps3_platform);
 103
 104 static int
 105 ps3_probe(platform_t plat)
 106 {
 107         phandle_t root;
 108         char compatible[64];
 109
 110         root = OF_finddevice("/");
 111         if (OF_getprop(root, "compatible", compatible, sizeof(compatible)) <= 0)
 112                 return (BUS_PROBE_NOWILDCARD);
 113
 114         if (strncmp(compatible, "sony,ps3", sizeof(compatible)) != 0)
 115                 return (BUS_PROBE_NOWILDCARD);
 116
 117         return (BUS_PROBE_SPECIFIC);
 118 }
 119
 120 static int
 121 ps3_attach(platform_t plat)
 122 {
 123
 124         pmap_mmu_install("mmu_ps3", BUS_PROBE_SPECIFIC);
 125         cpu_idle_hook = ps3_cpu_idle;
 126
 127         /* Set a breakpoint to make NULL an invalid address */
 128         lv1_set_dabr(0x7 /* read and write, MMU on */, 2 /* kernel accesses */);
 129
 130         return (0);
 131 }
 132
 133 void
 134 ps3_mem_regions(platform_t plat, struct mem_region *phys, int *physsz,
 135     struct mem_region *avail_regions, int *availsz)
 136 {
 137         uint64_t lpar_id, junk, ppe_id;
 138
 139         /* Get real mode memory region */
 140         avail_regions[0].mr_start = 0;
 141         lv1_get_logical_partition_id(&lpar_id);
 142         lv1_get_logical_ppe_id(&ppe_id);
 143         lv1_get_repository_node_value(lpar_id,
 144             lv1_repository_string("bi") >> 32, lv1_repository_string("pu"),
 145             ppe_id, lv1_repository_string("rm_size"),
 146             &avail_regions[0].mr_size, &junk);
 147
 148         /* Now get extended memory region */
 149         lv1_get_repository_node_value(lpar_id,
 150             lv1_repository_string("bi") >> 32,
 151             lv1_repository_string("rgntotal"), 0, 0,
 152             &avail_regions[1].mr_size, &junk);
 153
 154         /* Convert to maximum amount we can allocate in 16 MB pages */
 155         avail_regions[1].mr_size -= avail_regions[0].mr_size;
 156         avail_regions[1].mr_size -= avail_regions[1].mr_size % (16*1024*1024);
 157
 158         /* Allocate extended memory region */
 159         lv1_allocate_memory(avail_regions[1].mr_size, 24 /* 16 MB pages */,
 160             0, 0x04 /* any address */, &avail_regions[1].mr_start, &junk);
 161
 162         *availsz = 2;
 163
 164         if (phys != NULL) {
 165                 memcpy(phys, avail_regions, sizeof(*phys)*2);
 166                 *physsz = 2;
 167         }
 168 }
 169
 170 static u_long
 171 ps3_timebase_freq(platform_t plat, struct cpuref *cpuref)
 172 {
 173         uint64_t ticks, node_id, junk;
 174
 175         lv1_get_repository_node_value(PS3_LPAR_ID_PME,
 176             lv1_repository_string("be") >> 32, 0, 0, 0, &node_id, &junk);
 177         lv1_get_repository_node_value(PS3_LPAR_ID_PME,
 178             lv1_repository_string("be") >> 32, node_id,
 179             lv1_repository_string("clock"), 0, &ticks, &junk);
 180
 181         return (ticks);
 182 }
 183
 184 #ifdef SMP
 185 static int
 186 ps3_smp_first_cpu(platform_t plat, struct cpuref *cpuref)
 187 {
 188
 189         cpuref->cr_cpuid = 0;
 190         cpuref->cr_hwref = cpuref->cr_cpuid;
 191
 192         return (0);
 193 }
 194
 195 static int
 196 ps3_smp_next_cpu(platform_t plat, struct cpuref *cpuref)
 197 {
 198
 199         if (cpuref->cr_cpuid >= 1)
 200                 return (ENOENT);
 201
 202         cpuref->cr_cpuid++;
 203         cpuref->cr_hwref = cpuref->cr_cpuid;
 204
 205         return (0);
 206 }
 207
 208 static int
 209 ps3_smp_get_bsp(platform_t plat, struct cpuref *cpuref)
 210 {
 211
 212         cpuref->cr_cpuid = 0;
 213         cpuref->cr_hwref = cpuref->cr_cpuid;
 214
 215         return (0);
 216 }
 217
 218 static int
 219 ps3_smp_start_cpu(platform_t plat, struct pcpu *pc)
 220 {
 221         /* loader(8) is spinning on 0x40 == 0 right now */
 222         uint32_t *secondary_spin_sem = (uint32_t *)(0x40);
 223         int timeout;
 224
 225         if (pc->pc_hwref != 1)
 226                 return (ENXIO);
 227
 228         ap_pcpu = pc;
 229         *secondary_spin_sem = 1;
 230         powerpc_sync();
 231         DELAY(1);
 232
 233         timeout = 10000;
 234         while (!pc->pc_awake && timeout--)
 235                 DELAY(100);
 236
 237         return ((pc->pc_awake) ? 0 : EBUSY);
 238 }
 239
 240 static struct cpu_group *
 241 ps3_smp_topo(platform_t plat)
 242 {
 243         return (smp_topo_1level(CG_SHARE_L1, 2, CG_FLAG_SMT));
 244 }
 245 #endif
 246
 247 static void
 248 ps3_reset(platform_t plat)
 249 {
 250         lv1_panic(1);
 251 }
 252
 253 static vm_offset_t
 254 ps3_real_maxaddr(platform_t plat)
 255 {
 256         struct mem_region *phys, *avail;
 257         int nphys, navail;
 258
 259         mem_regions(&phys, &nphys, &avail, &navail);
 260
 261         return (phys[0].mr_start + phys[0].mr_size);
 262 }
 263
 264 static void
 265 ps3_cpu_idle(sbintime_t sbt)
 266 {
 267         lv1_pause(0);
 268 }
 269