1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2010 Nathan Whitehorn 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 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 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/bus.h> 36 #include <sys/pcpu.h> 37 #include <sys/proc.h> 38 #include <sys/reboot.h> 39 #include <sys/smp.h> 40 41 #include <vm/vm.h> 42 #include <vm/pmap.h> 43 44 #include <machine/bus.h> 45 #include <machine/cpu.h> 46 #include <machine/hid.h> 47 #include <machine/platform.h> 48 #include <machine/platformvar.h> 49 #include <machine/smp.h> 50 #include <machine/spr.h> 51 #include <machine/vmparam.h> 52 53 #include <dev/ofw/openfirm.h> 54 55 #include "platform_if.h" 56 #include "ps3-hvcall.h" 57 58 #ifdef SMP 59 extern void *ap_pcpu; 60 #endif 61 62 static int ps3_probe(platform_t); 63 static int ps3_attach(platform_t); 64 static void ps3_mem_regions(platform_t, struct mem_region *phys, int *physsz, 65 struct mem_region *avail, int *availsz); 66 static vm_offset_t ps3_real_maxaddr(platform_t); 67 static u_long ps3_timebase_freq(platform_t, struct cpuref *cpuref); 68 #ifdef SMP 69 static int ps3_smp_first_cpu(platform_t, struct cpuref *cpuref); 70 static int ps3_smp_next_cpu(platform_t, struct cpuref *cpuref); 71 static int ps3_smp_get_bsp(platform_t, struct cpuref *cpuref); 72 static int ps3_smp_start_cpu(platform_t, struct pcpu *cpu); 73 static struct cpu_group *ps3_smp_topo(platform_t); 74 #endif 75 static void ps3_reset(platform_t); 76 static void ps3_cpu_idle(sbintime_t); 77 78 static platform_method_t ps3_methods[] = { 79 PLATFORMMETHOD(platform_probe, ps3_probe), 80 PLATFORMMETHOD(platform_attach, ps3_attach), 81 PLATFORMMETHOD(platform_mem_regions, ps3_mem_regions), 82 PLATFORMMETHOD(platform_real_maxaddr, ps3_real_maxaddr), 83 PLATFORMMETHOD(platform_timebase_freq, ps3_timebase_freq), 84 85 #ifdef SMP 86 PLATFORMMETHOD(platform_smp_first_cpu, ps3_smp_first_cpu), 87 PLATFORMMETHOD(platform_smp_next_cpu, ps3_smp_next_cpu), 88 PLATFORMMETHOD(platform_smp_get_bsp, ps3_smp_get_bsp), 89 PLATFORMMETHOD(platform_smp_start_cpu, ps3_smp_start_cpu), 90 PLATFORMMETHOD(platform_smp_topo, ps3_smp_topo), 91 #endif 92 93 PLATFORMMETHOD(platform_reset, ps3_reset), 94 95 PLATFORMMETHOD_END 96 }; 97 98 static platform_def_t ps3_platform = { 99 "ps3", 100 ps3_methods, 101 0 102 }; 103 104 PLATFORM_DEF(ps3_platform); 105 106 static int 107 ps3_probe(platform_t plat) 108 { 109 phandle_t root; 110 char compatible[64]; 111 112 root = OF_finddevice("/"); 113 if (OF_getprop(root, "compatible", compatible, sizeof(compatible)) <= 0) 114 return (BUS_PROBE_NOWILDCARD); 115 116 if (strncmp(compatible, "sony,ps3", sizeof(compatible)) != 0) 117 return (BUS_PROBE_NOWILDCARD); 118 119 return (BUS_PROBE_SPECIFIC); 120 } 121 122 static int 123 ps3_attach(platform_t plat) 124 { 125 126 pmap_mmu_install("mmu_ps3", BUS_PROBE_SPECIFIC); 127 cpu_idle_hook = ps3_cpu_idle; 128 129 /* Set a breakpoint to make NULL an invalid address */ 130 lv1_set_dabr(0x7 /* read and write, MMU on */, 2 /* kernel accesses */); 131 132 return (0); 133 } 134 135 void 136 ps3_mem_regions(platform_t plat, struct mem_region *phys, int *physsz, 137 struct mem_region *avail_regions, int *availsz) 138 { 139 uint64_t lpar_id, junk, ppe_id; 140 141 /* Get real mode memory region */ 142 avail_regions[0].mr_start = 0; 143 lv1_get_logical_partition_id(&lpar_id); 144 lv1_get_logical_ppe_id(&ppe_id); 145 lv1_get_repository_node_value(lpar_id, 146 lv1_repository_string("bi") >> 32, lv1_repository_string("pu"), 147 ppe_id, lv1_repository_string("rm_size"), 148 &avail_regions[0].mr_size, &junk); 149 150 /* Now get extended memory region */ 151 lv1_get_repository_node_value(lpar_id, 152 lv1_repository_string("bi") >> 32, 153 lv1_repository_string("rgntotal"), 0, 0, 154 &avail_regions[1].mr_size, &junk); 155 156 /* Convert to maximum amount we can allocate in 16 MB pages */ 157 avail_regions[1].mr_size -= avail_regions[0].mr_size; 158 avail_regions[1].mr_size -= avail_regions[1].mr_size % (16*1024*1024); 159 160 /* Allocate extended memory region */ 161 lv1_allocate_memory(avail_regions[1].mr_size, 24 /* 16 MB pages */, 162 0, 0x04 /* any address */, &avail_regions[1].mr_start, &junk); 163 164 *availsz = 2; 165 166 if (phys != NULL) { 167 memcpy(phys, avail_regions, sizeof(*phys)*2); 168 *physsz = 2; 169 } 170 } 171 172 static u_long 173 ps3_timebase_freq(platform_t plat, struct cpuref *cpuref) 174 { 175 uint64_t ticks, node_id, junk; 176 177 lv1_get_repository_node_value(PS3_LPAR_ID_PME, 178 lv1_repository_string("be") >> 32, 0, 0, 0, &node_id, &junk); 179 lv1_get_repository_node_value(PS3_LPAR_ID_PME, 180 lv1_repository_string("be") >> 32, node_id, 181 lv1_repository_string("clock"), 0, &ticks, &junk); 182 183 return (ticks); 184 } 185 186 #ifdef SMP 187 static int 188 ps3_smp_first_cpu(platform_t plat, struct cpuref *cpuref) 189 { 190 191 cpuref->cr_cpuid = 0; 192 cpuref->cr_hwref = cpuref->cr_cpuid; 193 194 return (0); 195 } 196 197 static int 198 ps3_smp_next_cpu(platform_t plat, struct cpuref *cpuref) 199 { 200 201 if (cpuref->cr_cpuid >= 1) 202 return (ENOENT); 203 204 cpuref->cr_cpuid++; 205 cpuref->cr_hwref = cpuref->cr_cpuid; 206 207 return (0); 208 } 209 210 static int 211 ps3_smp_get_bsp(platform_t plat, struct cpuref *cpuref) 212 { 213 214 cpuref->cr_cpuid = 0; 215 cpuref->cr_hwref = cpuref->cr_cpuid; 216 217 return (0); 218 } 219 220 static int 221 ps3_smp_start_cpu(platform_t plat, struct pcpu *pc) 222 { 223 /* loader(8) is spinning on 0x40 == 0 right now */ 224 uint32_t *secondary_spin_sem = (uint32_t *)(0x40); 225 int timeout; 226 227 if (pc->pc_hwref != 1) 228 return (ENXIO); 229 230 ap_pcpu = pc; 231 *secondary_spin_sem = 1; 232 powerpc_sync(); 233 DELAY(1); 234 235 timeout = 10000; 236 while (!pc->pc_awake && timeout--) 237 DELAY(100); 238 239 return ((pc->pc_awake) ? 0 : EBUSY); 240 } 241 242 static struct cpu_group * 243 ps3_smp_topo(platform_t plat) 244 { 245 return (smp_topo_1level(CG_SHARE_L1, 2, CG_FLAG_SMT)); 246 } 247 #endif 248 249 static void 250 ps3_reset(platform_t plat) 251 { 252 lv1_panic(1); 253 } 254 255 static vm_offset_t 256 ps3_real_maxaddr(platform_t plat) 257 { 258 struct mem_region *phys, *avail; 259 int nphys, navail; 260 261 mem_regions(&phys, &nphys, &avail, &navail); 262 263 return (phys[0].mr_start + phys[0].mr_size); 264 } 265 266 static void 267 ps3_cpu_idle(sbintime_t sbt) 268 { 269 lv1_pause(0); 270 } 271 272