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 ps3_boot_pir = 0; 107 108 static int 109 ps3_probe(platform_t plat) 110 { 111 phandle_t root; 112 char compatible[64]; 113 114 root = OF_finddevice("/"); 115 if (OF_getprop(root, "compatible", compatible, sizeof(compatible)) <= 0) 116 return (BUS_PROBE_NOWILDCARD); 117 118 if (strncmp(compatible, "sony,ps3", sizeof(compatible)) != 0) 119 return (BUS_PROBE_NOWILDCARD); 120 121 return (BUS_PROBE_SPECIFIC); 122 } 123 124 static int 125 ps3_attach(platform_t plat) 126 { 127 128 pmap_mmu_install("mmu_ps3", BUS_PROBE_SPECIFIC); 129 cpu_idle_hook = ps3_cpu_idle; 130 131 /* Set a breakpoint to make NULL an invalid address */ 132 lv1_set_dabr(0x7 /* read and write, MMU on */, 2 /* kernel accesses */); 133 134 /* Record our PIR at boot for later */ 135 ps3_boot_pir = mfspr(SPR_PIR); 136 137 return (0); 138 } 139 140 void 141 ps3_mem_regions(platform_t plat, struct mem_region *phys, int *physsz, 142 struct mem_region *avail_regions, int *availsz) 143 { 144 uint64_t lpar_id, junk, ppe_id; 145 146 /* Get real mode memory region */ 147 avail_regions[0].mr_start = 0; 148 lv1_get_logical_partition_id(&lpar_id); 149 lv1_get_logical_ppe_id(&ppe_id); 150 lv1_get_repository_node_value(lpar_id, 151 lv1_repository_string("bi") >> 32, lv1_repository_string("pu"), 152 ppe_id, lv1_repository_string("rm_size"), 153 &avail_regions[0].mr_size, &junk); 154 155 /* Now get extended memory region */ 156 lv1_get_repository_node_value(lpar_id, 157 lv1_repository_string("bi") >> 32, 158 lv1_repository_string("rgntotal"), 0, 0, 159 &avail_regions[1].mr_size, &junk); 160 161 /* Convert to maximum amount we can allocate in 16 MB pages */ 162 avail_regions[1].mr_size -= avail_regions[0].mr_size; 163 avail_regions[1].mr_size -= avail_regions[1].mr_size % (16*1024*1024); 164 165 /* Allocate extended memory region */ 166 lv1_allocate_memory(avail_regions[1].mr_size, 24 /* 16 MB pages */, 167 0, 0x04 /* any address */, &avail_regions[1].mr_start, &junk); 168 169 *availsz = 2; 170 171 if (phys != NULL) { 172 memcpy(phys, avail_regions, sizeof(*phys)*2); 173 *physsz = 2; 174 } 175 } 176 177 static u_long 178 ps3_timebase_freq(platform_t plat, struct cpuref *cpuref) 179 { 180 uint64_t ticks, node_id, junk; 181 182 lv1_get_repository_node_value(PS3_LPAR_ID_PME, 183 lv1_repository_string("be") >> 32, 0, 0, 0, &node_id, &junk); 184 lv1_get_repository_node_value(PS3_LPAR_ID_PME, 185 lv1_repository_string("be") >> 32, node_id, 186 lv1_repository_string("clock"), 0, &ticks, &junk); 187 188 return (ticks); 189 } 190 191 #ifdef SMP 192 static int 193 ps3_smp_first_cpu(platform_t plat, struct cpuref *cpuref) 194 { 195 196 cpuref->cr_cpuid = 0; 197 cpuref->cr_hwref = ps3_boot_pir; 198 199 return (0); 200 } 201 202 static int 203 ps3_smp_next_cpu(platform_t plat, struct cpuref *cpuref) 204 { 205 206 if (cpuref->cr_cpuid >= 1) 207 return (ENOENT); 208 209 cpuref->cr_cpuid++; 210 cpuref->cr_hwref = !ps3_boot_pir; 211 212 return (0); 213 } 214 215 static int 216 ps3_smp_get_bsp(platform_t plat, struct cpuref *cpuref) 217 { 218 219 cpuref->cr_cpuid = 0; 220 cpuref->cr_hwref = ps3_boot_pir; 221 222 return (0); 223 } 224 225 static int 226 ps3_smp_start_cpu(platform_t plat, struct pcpu *pc) 227 { 228 /* kernel is spinning on 0x40 == -1 right now */ 229 volatile uint32_t *secondary_spin_sem = (uint32_t *)(0x40); 230 int remote_pir = pc->pc_hwref; 231 int timeout; 232 233 ap_pcpu = pc; 234 235 /* Try both PIR values, looping a few times: the HV likes moving us */ 236 timeout = 10000; 237 while (!pc->pc_awake && timeout--) { 238 *secondary_spin_sem = remote_pir; 239 powerpc_sync(); 240 DELAY(100); 241 remote_pir = !remote_pir; 242 } 243 244 return ((pc->pc_awake) ? 0 : EBUSY); 245 } 246 247 static struct cpu_group * 248 ps3_smp_topo(platform_t plat) 249 { 250 return (smp_topo_1level(CG_SHARE_L1, 2, CG_FLAG_SMT)); 251 } 252 #endif 253 254 static void 255 ps3_reset(platform_t plat) 256 { 257 lv1_panic(1); 258 } 259 260 static vm_offset_t 261 ps3_real_maxaddr(platform_t plat) 262 { 263 struct mem_region *phys, *avail; 264 int nphys, navail; 265 266 mem_regions(&phys, &nphys, &avail, &navail); 267 268 return (phys[0].mr_start + phys[0].mr_size); 269 } 270 271 static void 272 ps3_cpu_idle(sbintime_t sbt) 273 { 274 lv1_pause(0); 275 } 276 277