| 1 | /* |
| 2 | * ========== Copyright Header Begin ========================================== |
| 3 | * |
| 4 | * Hypervisor Software File: strand.h |
| 5 | * |
| 6 | * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. |
| 7 | * |
| 8 | * - Do no alter or remove copyright notices |
| 9 | * |
| 10 | * - Redistribution and use of this software in source and binary forms, with |
| 11 | * or without modification, are permitted provided that the following |
| 12 | * conditions are met: |
| 13 | * |
| 14 | * - Redistribution of source code must retain the above copyright notice, |
| 15 | * this list of conditions and the following disclaimer. |
| 16 | * |
| 17 | * - Redistribution in binary form must reproduce the above copyright notice, |
| 18 | * this list of conditions and the following disclaimer in the |
| 19 | * documentation and/or other materials provided with the distribution. |
| 20 | * |
| 21 | * Neither the name of Sun Microsystems, Inc. or the names of contributors |
| 22 | * may be used to endorse or promote products derived from this software |
| 23 | * without specific prior written permission. |
| 24 | * |
| 25 | * This software is provided "AS IS," without a warranty of any kind. |
| 26 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, |
| 27 | * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A |
| 28 | * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN |
| 29 | * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR |
| 30 | * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR |
| 31 | * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN |
| 32 | * OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR |
| 33 | * FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE |
| 34 | * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, |
| 35 | * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF |
| 36 | * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. |
| 37 | * |
| 38 | * You acknowledge that this software is not designed, licensed or |
| 39 | * intended for use in the design, construction, operation or maintenance of |
| 40 | * any nuclear facility. |
| 41 | * |
| 42 | * ========== Copyright Header End ============================================ |
| 43 | */ |
| 44 | /* |
| 45 | * Copyright 2007 Sun Microsystems, Inc. All rights reserved. |
| 46 | * Use is subject to license terms. |
| 47 | */ |
| 48 | |
| 49 | #ifndef _PLATFORM_STRAND_H |
| 50 | #define _PLATFORM_STRAND_H |
| 51 | |
| 52 | #pragma ident "@(#)strand.h 1.3 07/07/25 SMI" |
| 53 | |
| 54 | #ifdef __cplusplus |
| 55 | extern "C" { |
| 56 | #endif |
| 57 | |
| 58 | #include <config.h> |
| 59 | #include <cyclic.h> |
| 60 | |
| 61 | /* |
| 62 | * Size of svc code's per-cpu scratch area in 64-bit words |
| 63 | */ |
| 64 | #define NSVCSCRATCHREGS 6 |
| 65 | |
| 66 | |
| 67 | /* |
| 68 | * Number of per-cpu scratch locations |
| 69 | */ |
| 70 | #define NCPUSCRATCH 8 |
| 71 | |
| 72 | |
| 73 | /* |
| 74 | * Stack depth for each cpu |
| 75 | */ |
| 76 | #define STACKDEPTH 12 |
| 77 | |
| 78 | #ifndef _ASM |
| 79 | |
| 80 | typedef uint64_t cpuset_t; |
| 81 | |
| 82 | /* |
| 83 | * Structures for saving watchdog failure state |
| 84 | */ |
| 85 | struct trapstate { |
| 86 | uint64_t htstate; |
| 87 | uint64_t tstate; |
| 88 | uint64_t tt; |
| 89 | uint64_t tpc; |
| 90 | uint64_t tnpc; |
| 91 | }; |
| 92 | |
| 93 | struct trapglobals { |
| 94 | uint64_t g[8]; |
| 95 | }; |
| 96 | |
| 97 | /* |
| 98 | * Stack support |
| 99 | * |
| 100 | * Each CPU has a very simple stack. Only two operations are supported: |
| 101 | * Push and Pop. In the event the stack gets full or under poped, hv will |
| 102 | * abort. |
| 103 | */ |
| 104 | struct stack { |
| 105 | uint64_t top; /* top of the stack */ |
| 106 | uint64_t val[STACKDEPTH]; /* reg value */ |
| 107 | }; |
| 108 | |
| 109 | #if NSTRANDS > 256 |
| 110 | #error The strand id field is encoded in an 8bit value |
| 111 | #error for more than 256 strands this needs to have its type changed |
| 112 | #endif |
| 113 | |
| 114 | struct strand { |
| 115 | uint8_t id; /* physical strand number */ |
| 116 | struct config *configp; |
| 117 | |
| 118 | /* |
| 119 | * This list is used to assign work to this strand. |
| 120 | * The current_slot points to the slot action in progress |
| 121 | * We only allow the local strand to manipulate its slots |
| 122 | * which means (along as interrupts are off) we've no need |
| 123 | * for locks around this structure. |
| 124 | */ |
| 125 | uint16_t current_slot; |
| 126 | struct sched_slot slot[NUM_SCHED_SLOTS]; |
| 127 | |
| 128 | /* |
| 129 | * This is the HV strand X-Call mailbox. |
| 130 | * This should evolve into an LDC channel with endpoints between |
| 131 | * each of the strands, (an N*N matrix), and a mondo queue indicating |
| 132 | * which incomming endpoints need servicing, but that happens when |
| 133 | * we assign guest0 as the HV's context - later. |
| 134 | */ |
| 135 | struct xcall_mbox xc_mb; |
| 136 | uint64_t hv_txmondo[8]; |
| 137 | uint64_t hv_rxmondo[8]; |
| 138 | |
| 139 | /* |
| 140 | * Initialisation support .. FIXME .. we could use scratch |
| 141 | * values instead as these are only used at the beginning of time |
| 142 | */ |
| 143 | uint64_t scrub_basepa; |
| 144 | uint64_t scrub_size; |
| 145 | |
| 146 | /* |
| 147 | * The mini-stack used for the PUSH & POP macros. |
| 148 | */ |
| 149 | struct mini_stack mini_stack; |
| 150 | |
| 151 | uint64_t scr[NCPUSCRATCH]; /* scratch space */ |
| 152 | |
| 153 | /* |
| 154 | * hstick interrupt support |
| 155 | */ |
| 156 | struct cyclic cyclic; |
| 157 | |
| 158 | /* |
| 159 | * Error handling support |
| 160 | */ |
| 161 | |
| 162 | /* |
| 163 | * support for when we get a UE with TSTATE.GL == GL |
| 164 | */ |
| 165 | uint64_t ue_tmp1; |
| 166 | uint64_t ue_tmp2; |
| 167 | uint64_t ue_tmp3; |
| 168 | struct trapglobals ue_globals[MAXTL]; |
| 169 | uint64_t err_seq_no; /* unique sequence # */ |
| 170 | uint32_t err_flag; /* error handling flags */ |
| 171 | void *strand_diag_buf[MAXTL]; |
| 172 | void *strand_sun4v_rprt_buf[MAXTL]; |
| 173 | void *strand_err_table_entry[MAXTL]; |
| 174 | uint64_t strand_err_isfsr[MAXTL]; |
| 175 | uint64_t strand_err_dsfsr[MAXTL]; |
| 176 | uint64_t strand_err_dsfar[MAXTL]; |
| 177 | uint64_t strand_err_desr[MAXTL]; |
| 178 | uint64_t strand_err_dfesr[MAXTL]; |
| 179 | uint64_t strand_err_return_addr[MAXTL]; |
| 180 | uint64_t io_prot; /* i/o error protection flag */ |
| 181 | uint64_t io_error; /* i/o error flag */ |
| 182 | uint64_t nrpending; /* pending non-resumable on this CPU */ |
| 183 | uint64_t rerouted_cpu; /* rerouting CPU -or- CPU in error */ |
| 184 | uint64_t rerouted_ehdl; /* EHDL rerouted to this CPU */ |
| 185 | uint64_t rerouted_addr; /* PA rerouted to this CPU */ |
| 186 | uint64_t rerouted_stick; /* %stick rerouted to this CPU */ |
| 187 | uint64_t rerouted_attr; /* ATTR rerouted to this CPU */ |
| 188 | uint64_t abort_pc; /* %pc of hvabort caller */ |
| 189 | uint64_t err_globals_saved; /* globals saved OK on TL == MAXGL */ |
| 190 | |
| 191 | /* |
| 192 | * Config |
| 193 | */ |
| 194 | uint64_t dtnode; |
| 195 | |
| 196 | /* |
| 197 | * Saved failure state |
| 198 | */ |
| 199 | uint64_t fail_tl; |
| 200 | uint64_t fail_gl; |
| 201 | struct trapstate trapstate[MAXTL]; |
| 202 | struct trapglobals trapglobals[MAXGL]; |
| 203 | |
| 204 | /* |
| 205 | * save a "clean" copy of the MRA data: |
| 206 | * |
| 207 | * mra[0:3]: z_tsb_cfg |
| 208 | * mra[4:7]: nz_tsb_cfg |
| 209 | */ |
| 210 | uint64_t mra[MAX_NMRA]; |
| 211 | |
| 212 | /* |
| 213 | * This is the real stack used for the C environment |
| 214 | */ |
| 215 | uint64_t strand_stack[STRAND_STACK_SIZE / sizeof (uint64_t)]; |
| 216 | }; |
| 217 | |
| 218 | #endif /* !_ASM */ |
| 219 | |
| 220 | /* |
| 221 | * struct cpu.wip: Work In Progress |
| 222 | */ |
| 223 | #define CPU_WIP_CE (1 << 0) /* ce processing */ |
| 224 | #define CPU_WIP_UE (1 << 1) /* ue processing */ |
| 225 | #define CPU_WIP_CI (1 << 2) /* cmpr interrupt processing */ |
| 226 | #define CPU_WIP_ERRPOLL (1 << 4) /* polling for errors */ |
| 227 | |
| 228 | #ifdef __cplusplus |
| 229 | } |
| 230 | #endif |
| 231 | |
| 232 | #endif /* _PLATFORM_STRAND_H */ |