Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 1 | #ifndef _POWERPC_RTAS_H |
| 2 | #define _POWERPC_RTAS_H |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 3 | #ifdef __KERNEL__ |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 4 | |
| 5 | #include <linux/spinlock.h> |
| 6 | #include <asm/page.h> |
| 7 | |
| 8 | /* |
| 9 | * Definitions for talking to the RTAS on CHRP machines. |
| 10 | * |
| 11 | * Copyright (C) 2001 Peter Bergner |
| 12 | * Copyright (C) 2001 PPC 64 Team, IBM Corp |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or |
| 15 | * modify it under the terms of the GNU General Public License |
| 16 | * as published by the Free Software Foundation; either version |
| 17 | * 2 of the License, or (at your option) any later version. |
| 18 | */ |
| 19 | |
| 20 | #define RTAS_UNKNOWN_SERVICE (-1) |
Ingo Molnar | fe33332 | 2009-01-06 14:26:03 +0000 | [diff] [blame] | 21 | #define RTAS_INSTANTIATE_MAX (1ULL<<30) /* Don't instantiate rtas at/above this value */ |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 22 | |
| 23 | /* Buffer size for ppc_rtas system call. */ |
| 24 | #define RTAS_RMOBUF_MAX (64 * 1024) |
| 25 | |
| 26 | /* RTAS return status codes */ |
Dave C Boutcher | 368a6ba | 2006-06-12 19:49:20 -0500 | [diff] [blame] | 27 | #define RTAS_NOT_SUSPENDABLE -9004 |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 28 | #define RTAS_BUSY -2 /* RTAS Busy */ |
| 29 | #define RTAS_EXTENDED_DELAY_MIN 9900 |
| 30 | #define RTAS_EXTENDED_DELAY_MAX 9905 |
| 31 | |
| 32 | /* |
| 33 | * In general to call RTAS use rtas_token("string") to lookup |
| 34 | * an RTAS token for the given string (e.g. "event-scan"). |
| 35 | * To actually perform the call use |
| 36 | * ret = rtas_call(token, n_in, n_out, ...) |
| 37 | * Where n_in is the number of input parameters and |
| 38 | * n_out is the number of output parameters |
| 39 | * |
| 40 | * If the "string" is invalid on this system, RTAS_UNKNOWN_SERVICE |
| 41 | * will be returned as a token. rtas_call() does look for this |
| 42 | * token and error out gracefully so rtas_call(rtas_token("str"), ...) |
| 43 | * may be safely used for one-shot calls to RTAS. |
| 44 | * |
| 45 | */ |
| 46 | |
| 47 | typedef u32 rtas_arg_t; |
| 48 | |
| 49 | struct rtas_args { |
| 50 | u32 token; |
| 51 | u32 nargs; |
| 52 | u32 nret; |
| 53 | rtas_arg_t args[16]; |
| 54 | rtas_arg_t *rets; /* Pointer to return values in args[]. */ |
| 55 | }; |
| 56 | |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 57 | struct rtas_t { |
| 58 | unsigned long entry; /* physical address pointer */ |
| 59 | unsigned long base; /* physical address pointer */ |
| 60 | unsigned long size; |
Thomas Gleixner | 445c895 | 2009-12-02 19:49:50 +0100 | [diff] [blame] | 61 | arch_spinlock_t lock; |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 62 | struct rtas_args args; |
| 63 | struct device_node *dev; /* virtual address pointer */ |
| 64 | }; |
| 65 | |
Brian King | 8fe93f8 | 2010-07-07 12:31:01 +0000 | [diff] [blame] | 66 | struct rtas_suspend_me_data { |
| 67 | atomic_t working; /* number of cpus accessing this struct */ |
| 68 | atomic_t done; |
| 69 | int token; /* ibm,suspend-me */ |
| 70 | atomic_t error; |
| 71 | struct completion *complete; /* wait on this until working == 0 */ |
| 72 | }; |
| 73 | |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 74 | /* RTAS event classes */ |
| 75 | #define RTAS_INTERNAL_ERROR 0x80000000 /* set bit 0 */ |
| 76 | #define RTAS_EPOW_WARNING 0x40000000 /* set bit 1 */ |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 77 | #define RTAS_HOTPLUG_EVENTS 0x10000000 /* set bit 3 */ |
Anton Blanchard | 4a9f9506 | 2009-03-31 20:13:27 +0000 | [diff] [blame] | 78 | #define RTAS_IO_EVENTS 0x08000000 /* set bit 4 */ |
| 79 | #define RTAS_EVENT_SCAN_ALL_EVENTS 0xffffffff |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 80 | |
| 81 | /* RTAS event severity */ |
| 82 | #define RTAS_SEVERITY_FATAL 0x5 |
| 83 | #define RTAS_SEVERITY_ERROR 0x4 |
| 84 | #define RTAS_SEVERITY_ERROR_SYNC 0x3 |
| 85 | #define RTAS_SEVERITY_WARNING 0x2 |
| 86 | #define RTAS_SEVERITY_EVENT 0x1 |
| 87 | #define RTAS_SEVERITY_NO_ERROR 0x0 |
| 88 | |
| 89 | /* RTAS event disposition */ |
| 90 | #define RTAS_DISP_FULLY_RECOVERED 0x0 |
| 91 | #define RTAS_DISP_LIMITED_RECOVERY 0x1 |
| 92 | #define RTAS_DISP_NOT_RECOVERED 0x2 |
| 93 | |
| 94 | /* RTAS event initiator */ |
| 95 | #define RTAS_INITIATOR_UNKNOWN 0x0 |
| 96 | #define RTAS_INITIATOR_CPU 0x1 |
| 97 | #define RTAS_INITIATOR_PCI 0x2 |
| 98 | #define RTAS_INITIATOR_ISA 0x3 |
| 99 | #define RTAS_INITIATOR_MEMORY 0x4 |
| 100 | #define RTAS_INITIATOR_POWERMGM 0x5 |
| 101 | |
| 102 | /* RTAS event target */ |
| 103 | #define RTAS_TARGET_UNKNOWN 0x0 |
| 104 | #define RTAS_TARGET_CPU 0x1 |
| 105 | #define RTAS_TARGET_PCI 0x2 |
| 106 | #define RTAS_TARGET_ISA 0x3 |
| 107 | #define RTAS_TARGET_MEMORY 0x4 |
| 108 | #define RTAS_TARGET_POWERMGM 0x5 |
| 109 | |
| 110 | /* RTAS event type */ |
| 111 | #define RTAS_TYPE_RETRY 0x01 |
| 112 | #define RTAS_TYPE_TCE_ERR 0x02 |
| 113 | #define RTAS_TYPE_INTERN_DEV_FAIL 0x03 |
| 114 | #define RTAS_TYPE_TIMEOUT 0x04 |
| 115 | #define RTAS_TYPE_DATA_PARITY 0x05 |
| 116 | #define RTAS_TYPE_ADDR_PARITY 0x06 |
| 117 | #define RTAS_TYPE_CACHE_PARITY 0x07 |
| 118 | #define RTAS_TYPE_ADDR_INVALID 0x08 |
| 119 | #define RTAS_TYPE_ECC_UNCORR 0x09 |
| 120 | #define RTAS_TYPE_ECC_CORR 0x0a |
| 121 | #define RTAS_TYPE_EPOW 0x40 |
| 122 | #define RTAS_TYPE_PLATFORM 0xE0 |
| 123 | #define RTAS_TYPE_IO 0xE1 |
| 124 | #define RTAS_TYPE_INFO 0xE2 |
| 125 | #define RTAS_TYPE_DEALLOC 0xE3 |
| 126 | #define RTAS_TYPE_DUMP 0xE4 |
| 127 | /* I don't add PowerMGM events right now, this is a different topic */ |
| 128 | #define RTAS_TYPE_PMGM_POWER_SW_ON 0x60 |
| 129 | #define RTAS_TYPE_PMGM_POWER_SW_OFF 0x61 |
| 130 | #define RTAS_TYPE_PMGM_LID_OPEN 0x62 |
| 131 | #define RTAS_TYPE_PMGM_LID_CLOSE 0x63 |
| 132 | #define RTAS_TYPE_PMGM_SLEEP_BTN 0x64 |
| 133 | #define RTAS_TYPE_PMGM_WAKE_BTN 0x65 |
| 134 | #define RTAS_TYPE_PMGM_BATTERY_WARN 0x66 |
| 135 | #define RTAS_TYPE_PMGM_BATTERY_CRIT 0x67 |
| 136 | #define RTAS_TYPE_PMGM_SWITCH_TO_BAT 0x68 |
| 137 | #define RTAS_TYPE_PMGM_SWITCH_TO_AC 0x69 |
| 138 | #define RTAS_TYPE_PMGM_KBD_OR_MOUSE 0x6a |
| 139 | #define RTAS_TYPE_PMGM_ENCLOS_OPEN 0x6b |
| 140 | #define RTAS_TYPE_PMGM_ENCLOS_CLOSED 0x6c |
| 141 | #define RTAS_TYPE_PMGM_RING_INDICATE 0x6d |
| 142 | #define RTAS_TYPE_PMGM_LAN_ATTENTION 0x6e |
| 143 | #define RTAS_TYPE_PMGM_TIME_ALARM 0x6f |
| 144 | #define RTAS_TYPE_PMGM_CONFIG_CHANGE 0x70 |
| 145 | #define RTAS_TYPE_PMGM_SERVICE_PROC 0x71 |
| 146 | |
Mark Nelson | b08e281 | 2010-05-26 21:40:39 +0000 | [diff] [blame] | 147 | /* RTAS check-exception vector offset */ |
| 148 | #define RTAS_VECTOR_EXTERNAL_INTERRUPT 0x500 |
| 149 | |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 150 | struct rtas_error_log { |
| 151 | unsigned long version:8; /* Architectural version */ |
| 152 | unsigned long severity:3; /* Severity level of error */ |
| 153 | unsigned long disposition:2; /* Degree of recovery */ |
| 154 | unsigned long extended:1; /* extended log present? */ |
| 155 | unsigned long /* reserved */ :2; /* Reserved for future use */ |
| 156 | unsigned long initiator:4; /* Initiator of event */ |
| 157 | unsigned long target:4; /* Target of failed operation */ |
| 158 | unsigned long type:8; /* General event or error*/ |
| 159 | unsigned long extended_log_length:32; /* length in bytes */ |
Tseng-Hui (Frank) Lin | 4cb4638 | 2011-05-03 18:28:43 +0000 | [diff] [blame] | 160 | unsigned char buffer[1]; /* Start of extended log */ |
| 161 | /* Variable length. */ |
| 162 | }; |
| 163 | |
| 164 | #define RTAS_V6EXT_LOG_FORMAT_EVENT_LOG 14 |
| 165 | |
| 166 | #define RTAS_V6EXT_COMPANY_ID_IBM (('I' << 24) | ('B' << 16) | ('M' << 8)) |
| 167 | |
| 168 | /* RTAS general extended event log, Version 6. The extended log starts |
| 169 | * from "buffer" field of struct rtas_error_log defined above. |
| 170 | */ |
| 171 | struct rtas_ext_event_log_v6 { |
| 172 | /* Byte 0 */ |
| 173 | uint32_t log_valid:1; /* 1:Log valid */ |
| 174 | uint32_t unrecoverable_error:1; /* 1:Unrecoverable error */ |
| 175 | uint32_t recoverable_error:1; /* 1:recoverable (correctable */ |
| 176 | /* or successfully retried) */ |
| 177 | uint32_t degraded_operation:1; /* 1:Unrecoverable err, bypassed*/ |
| 178 | /* - degraded operation (e.g. */ |
| 179 | /* CPU or mem taken off-line) */ |
| 180 | uint32_t predictive_error:1; |
| 181 | uint32_t new_log:1; /* 1:"New" log (Always 1 for */ |
| 182 | /* data returned from RTAS */ |
| 183 | uint32_t big_endian:1; /* 1: Big endian */ |
| 184 | uint32_t :1; /* reserved */ |
| 185 | /* Byte 1 */ |
| 186 | uint32_t :8; /* reserved */ |
| 187 | /* Byte 2 */ |
| 188 | uint32_t powerpc_format:1; /* Set to 1 (indicating log is */ |
| 189 | /* in PowerPC format */ |
| 190 | uint32_t :3; /* reserved */ |
| 191 | uint32_t log_format:4; /* Log format indicator. Define */ |
| 192 | /* format used for byte 12-2047 */ |
| 193 | /* Byte 3 */ |
| 194 | uint32_t :8; /* reserved */ |
| 195 | /* Byte 4-11 */ |
| 196 | uint8_t reserved[8]; /* reserved */ |
| 197 | /* Byte 12-15 */ |
| 198 | uint32_t company_id; /* Company ID of the company */ |
| 199 | /* that defines the format for */ |
| 200 | /* the vendor specific log type */ |
| 201 | /* Byte 16-end of log */ |
| 202 | uint8_t vendor_log[1]; /* Start of vendor specific log */ |
| 203 | /* Variable length. */ |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 204 | }; |
| 205 | |
Anton Blanchard | 6431f20 | 2012-03-21 15:47:07 +0000 | [diff] [blame] | 206 | /* pSeries event log format */ |
| 207 | |
| 208 | /* Two bytes ASCII section IDs */ |
| 209 | #define PSERIES_ELOG_SECT_ID_PRIV_HDR (('P' << 8) | 'H') |
| 210 | #define PSERIES_ELOG_SECT_ID_USER_HDR (('U' << 8) | 'H') |
| 211 | #define PSERIES_ELOG_SECT_ID_PRIMARY_SRC (('P' << 8) | 'S') |
| 212 | #define PSERIES_ELOG_SECT_ID_EXTENDED_UH (('E' << 8) | 'H') |
| 213 | #define PSERIES_ELOG_SECT_ID_FAILING_MTMS (('M' << 8) | 'T') |
| 214 | #define PSERIES_ELOG_SECT_ID_SECONDARY_SRC (('S' << 8) | 'S') |
| 215 | #define PSERIES_ELOG_SECT_ID_DUMP_LOCATOR (('D' << 8) | 'H') |
| 216 | #define PSERIES_ELOG_SECT_ID_FW_ERROR (('S' << 8) | 'W') |
| 217 | #define PSERIES_ELOG_SECT_ID_IMPACT_PART_ID (('L' << 8) | 'P') |
| 218 | #define PSERIES_ELOG_SECT_ID_LOGIC_RESOURCE_ID (('L' << 8) | 'R') |
| 219 | #define PSERIES_ELOG_SECT_ID_HMC_ID (('H' << 8) | 'M') |
| 220 | #define PSERIES_ELOG_SECT_ID_EPOW (('E' << 8) | 'P') |
| 221 | #define PSERIES_ELOG_SECT_ID_IO_EVENT (('I' << 8) | 'E') |
| 222 | #define PSERIES_ELOG_SECT_ID_MANUFACT_INFO (('M' << 8) | 'I') |
| 223 | #define PSERIES_ELOG_SECT_ID_CALL_HOME (('C' << 8) | 'H') |
| 224 | #define PSERIES_ELOG_SECT_ID_USER_DEF (('U' << 8) | 'D') |
| 225 | |
| 226 | /* Vendor specific Platform Event Log Format, Version 6, section header */ |
| 227 | struct pseries_errorlog { |
| 228 | uint16_t id; /* 0x00 2-byte ASCII section ID */ |
| 229 | uint16_t length; /* 0x02 Section length in bytes */ |
| 230 | uint8_t version; /* 0x04 Section version */ |
| 231 | uint8_t subtype; /* 0x05 Section subtype */ |
| 232 | uint16_t creator_component; /* 0x06 Creator component ID */ |
| 233 | uint8_t data[]; /* 0x08 Start of section data */ |
| 234 | }; |
| 235 | |
| 236 | struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log, |
| 237 | uint16_t section_id); |
| 238 | |
Paul Mackerras | f4fcbbe | 2005-11-03 14:41:19 +1100 | [diff] [blame] | 239 | /* |
| 240 | * This can be set by the rtas_flash module so that it can get called |
| 241 | * as the absolutely last thing before the kernel terminates. |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 242 | */ |
Paul Mackerras | f4fcbbe | 2005-11-03 14:41:19 +1100 | [diff] [blame] | 243 | extern void (*rtas_flash_term_hook)(int); |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 244 | |
| 245 | extern struct rtas_t rtas; |
| 246 | |
| 247 | extern void enter_rtas(unsigned long); |
| 248 | extern int rtas_token(const char *service); |
Nathan Lynch | f2d6d2d | 2006-12-06 18:50:45 -0600 | [diff] [blame] | 249 | extern int rtas_service_present(const char *service); |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 250 | extern int rtas_call(int token, int, int, int *, ...); |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 251 | extern void rtas_restart(char *cmd); |
| 252 | extern void rtas_power_off(void); |
| 253 | extern void rtas_halt(void); |
Paul Mackerras | 8f51506 | 2007-12-03 09:30:04 +1100 | [diff] [blame] | 254 | extern void rtas_os_term(char *str); |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 255 | extern int rtas_get_sensor(int sensor, int index, int *state); |
| 256 | extern int rtas_get_power_level(int powerdomain, int *level); |
| 257 | extern int rtas_set_power_level(int powerdomain, int level, int *setlevel); |
Nathan Lynch | edc72ac | 2008-12-11 09:14:25 +0000 | [diff] [blame] | 258 | extern bool rtas_indicator_present(int token, int *maxindex); |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 259 | extern int rtas_set_indicator(int indicator, int index, int new_value); |
Haren Myneni | 81b73dd | 2006-07-27 14:29:00 -0700 | [diff] [blame] | 260 | extern int rtas_set_indicator_fast(int indicator, int index, int new_value); |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 261 | extern void rtas_progress(char *s, unsigned short hex); |
| 262 | extern void rtas_initialize(void); |
Brian King | 8fe93f8 | 2010-07-07 12:31:01 +0000 | [diff] [blame] | 263 | extern int rtas_suspend_cpu(struct rtas_suspend_me_data *data); |
| 264 | extern int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data); |
Nathan Fontenot | d8862be | 2010-09-10 09:41:35 +0000 | [diff] [blame] | 265 | extern int rtas_ibm_suspend_me(struct rtas_args *); |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 266 | |
| 267 | struct rtc_time; |
Paul Mackerras | 143a1de | 2005-10-19 23:11:21 +1000 | [diff] [blame] | 268 | extern unsigned long rtas_get_boot_time(void); |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 269 | extern void rtas_get_rtc_time(struct rtc_time *rtc_time); |
| 270 | extern int rtas_set_rtc_time(struct rtc_time *rtc_time); |
| 271 | |
John Rose | 507279d | 2006-06-05 16:31:48 -0500 | [diff] [blame] | 272 | extern unsigned int rtas_busy_delay_time(int status); |
| 273 | extern unsigned int rtas_busy_delay(int status); |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 274 | |
Michael Ellerman | 458148c | 2006-06-23 18:20:13 +1000 | [diff] [blame] | 275 | extern int early_init_dt_scan_rtas(unsigned long node, |
| 276 | const char *uname, int depth, void *data); |
| 277 | |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 278 | extern void pSeries_log_error(char *buf, unsigned int err_type, int fatal); |
| 279 | |
Ravi K. Nittala | df17f56 | 2011-10-03 21:49:53 +0000 | [diff] [blame] | 280 | #ifdef CONFIG_PPC_RTAS_DAEMON |
| 281 | extern void rtas_cancel_event_scan(void); |
| 282 | #else |
| 283 | static inline void rtas_cancel_event_scan(void) { } |
| 284 | #endif |
| 285 | |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 286 | /* Error types logged. */ |
| 287 | #define ERR_FLAG_ALREADY_LOGGED 0x0 |
| 288 | #define ERR_FLAG_BOOT 0x1 /* log was pulled from NVRAM on boot */ |
| 289 | #define ERR_TYPE_RTAS_LOG 0x2 /* from rtas event-scan */ |
Jim Keniston | 6c49368 | 2011-07-25 07:54:50 +0000 | [diff] [blame] | 290 | #define ERR_TYPE_KERNEL_PANIC 0x4 /* from die()/panic() */ |
| 291 | #define ERR_TYPE_KERNEL_PANIC_GZ 0x8 /* ditto, compressed */ |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 292 | |
| 293 | /* All the types and not flags */ |
Jim Keniston | 6c49368 | 2011-07-25 07:54:50 +0000 | [diff] [blame] | 294 | #define ERR_TYPE_MASK \ |
| 295 | (ERR_TYPE_RTAS_LOG | ERR_TYPE_KERNEL_PANIC | ERR_TYPE_KERNEL_PANIC_GZ) |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 296 | |
| 297 | #define RTAS_DEBUG KERN_DEBUG "RTAS: " |
| 298 | |
| 299 | #define RTAS_ERROR_LOG_MAX 2048 |
| 300 | |
| 301 | /* |
| 302 | * Return the firmware-specified size of the error log buffer |
| 303 | * for all rtas calls that require an error buffer argument. |
| 304 | * This includes 'check-exception' and 'rtas-last-error'. |
| 305 | */ |
| 306 | extern int rtas_get_error_log_max(void); |
| 307 | |
| 308 | /* Event Scan Parameters */ |
| 309 | #define EVENT_SCAN_ALL_EVENTS 0xf0000000 |
| 310 | #define SURVEILLANCE_TOKEN 9000 |
| 311 | #define LOG_NUMBER 64 /* must be a power of two */ |
| 312 | #define LOG_NUMBER_MASK (LOG_NUMBER-1) |
| 313 | |
| 314 | /* Some RTAS ops require a data buffer and that buffer must be < 4G. |
| 315 | * Rather than having a memory allocator, just use this buffer |
| 316 | * (get the lock first), make the RTAS call. Copy the data instead |
| 317 | * of holding the buffer for long. |
| 318 | */ |
| 319 | |
| 320 | #define RTAS_DATA_BUF_SIZE 4096 |
| 321 | extern spinlock_t rtas_data_buf_lock; |
| 322 | extern char rtas_data_buf[RTAS_DATA_BUF_SIZE]; |
| 323 | |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 324 | /* RMO buffer reserved for user-space RTAS use */ |
| 325 | extern unsigned long rtas_rmo_buf; |
| 326 | |
| 327 | #define GLOBAL_INTERRUPT_QUEUE 9005 |
| 328 | |
Michael Ellerman | 6f3d5d3 | 2006-08-16 22:04:14 +1000 | [diff] [blame] | 329 | /** |
| 330 | * rtas_config_addr - Format a busno, devfn and reg for RTAS. |
| 331 | * @busno: The bus number. |
| 332 | * @devfn: The device and function number as encoded by PCI_DEVFN(). |
| 333 | * @reg: The register number. |
| 334 | * |
| 335 | * This function encodes the given busno, devfn and register number as |
| 336 | * required for RTAS calls that take a "config_addr" parameter. |
| 337 | * See PAPR requirement 7.3.4-1 for more info. |
| 338 | */ |
| 339 | static inline u32 rtas_config_addr(int busno, int devfn, int reg) |
| 340 | { |
| 341 | return ((reg & 0xf00) << 20) | ((busno & 0xff) << 16) | |
| 342 | (devfn << 8) | (reg & 0xff); |
| 343 | } |
| 344 | |
Benjamin Herrenschmidt | c4007a2 | 2009-06-16 16:42:50 +0000 | [diff] [blame] | 345 | extern void __cpuinit rtas_give_timebase(void); |
| 346 | extern void __cpuinit rtas_take_timebase(void); |
| 347 | |
sukadev@linux.vnet.ibm.com | 8a3e3d3 | 2011-12-02 12:26:23 +0000 | [diff] [blame] | 348 | #ifdef CONFIG_PPC_RTAS |
| 349 | static inline int page_is_rtas_user_buf(unsigned long pfn) |
| 350 | { |
| 351 | unsigned long paddr = (pfn << PAGE_SHIFT); |
| 352 | if (paddr >= rtas_rmo_buf && paddr < (rtas_rmo_buf + RTAS_RMOBUF_MAX)) |
| 353 | return 1; |
| 354 | return 0; |
| 355 | } |
| 356 | #else |
| 357 | static inline int page_is_rtas_user_buf(unsigned long pfn) { return 0;} |
| 358 | #endif |
| 359 | |
David Howells | ae3a197 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 360 | extern int call_rtas(const char *, int, int, unsigned long *, ...); |
| 361 | |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 362 | #endif /* __KERNEL__ */ |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 363 | #endif /* _POWERPC_RTAS_H */ |