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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2#ifndef _POWERPC_RTAS_H
3#define _POWERPC_RTAS_H
4#ifdef __KERNEL__
5
6#include <linux/mutex.h>
7#include <linux/spinlock.h>
8#include <asm/page.h>
9#include <asm/rtas-types.h>
10#include <linux/time.h>
11#include <linux/cpumask.h>
12
13/*
14 * Definitions for talking to the RTAS on CHRP machines.
15 *
16 * Copyright (C) 2001 Peter Bergner
17 * Copyright (C) 2001 PPC 64 Team, IBM Corp
18 */
19
20enum rtas_function_index {
21 RTAS_FNIDX__CHECK_EXCEPTION,
22 RTAS_FNIDX__DISPLAY_CHARACTER,
23 RTAS_FNIDX__EVENT_SCAN,
24 RTAS_FNIDX__FREEZE_TIME_BASE,
25 RTAS_FNIDX__GET_POWER_LEVEL,
26 RTAS_FNIDX__GET_SENSOR_STATE,
27 RTAS_FNIDX__GET_TERM_CHAR,
28 RTAS_FNIDX__GET_TIME_OF_DAY,
29 RTAS_FNIDX__IBM_ACTIVATE_FIRMWARE,
30 RTAS_FNIDX__IBM_CBE_START_PTCAL,
31 RTAS_FNIDX__IBM_CBE_STOP_PTCAL,
32 RTAS_FNIDX__IBM_CHANGE_MSI,
33 RTAS_FNIDX__IBM_CLOSE_ERRINJCT,
34 RTAS_FNIDX__IBM_CONFIGURE_BRIDGE,
35 RTAS_FNIDX__IBM_CONFIGURE_CONNECTOR,
36 RTAS_FNIDX__IBM_CONFIGURE_KERNEL_DUMP,
37 RTAS_FNIDX__IBM_CONFIGURE_PE,
38 RTAS_FNIDX__IBM_CREATE_PE_DMA_WINDOW,
39 RTAS_FNIDX__IBM_DISPLAY_MESSAGE,
40 RTAS_FNIDX__IBM_ERRINJCT,
41 RTAS_FNIDX__IBM_EXTI2C,
42 RTAS_FNIDX__IBM_GET_CONFIG_ADDR_INFO,
43 RTAS_FNIDX__IBM_GET_CONFIG_ADDR_INFO2,
44 RTAS_FNIDX__IBM_GET_DYNAMIC_SENSOR_STATE,
45 RTAS_FNIDX__IBM_GET_INDICES,
46 RTAS_FNIDX__IBM_GET_RIO_TOPOLOGY,
47 RTAS_FNIDX__IBM_GET_SYSTEM_PARAMETER,
48 RTAS_FNIDX__IBM_GET_VPD,
49 RTAS_FNIDX__IBM_GET_XIVE,
50 RTAS_FNIDX__IBM_INT_OFF,
51 RTAS_FNIDX__IBM_INT_ON,
52 RTAS_FNIDX__IBM_IO_QUIESCE_ACK,
53 RTAS_FNIDX__IBM_LPAR_PERFTOOLS,
54 RTAS_FNIDX__IBM_MANAGE_FLASH_IMAGE,
55 RTAS_FNIDX__IBM_MANAGE_STORAGE_PRESERVATION,
56 RTAS_FNIDX__IBM_NMI_INTERLOCK,
57 RTAS_FNIDX__IBM_NMI_REGISTER,
58 RTAS_FNIDX__IBM_OPEN_ERRINJCT,
59 RTAS_FNIDX__IBM_OPEN_SRIOV_ALLOW_UNFREEZE,
60 RTAS_FNIDX__IBM_OPEN_SRIOV_MAP_PE_NUMBER,
61 RTAS_FNIDX__IBM_OS_TERM,
62 RTAS_FNIDX__IBM_PARTNER_CONTROL,
63 RTAS_FNIDX__IBM_PHYSICAL_ATTESTATION,
64 RTAS_FNIDX__IBM_PLATFORM_DUMP,
65 RTAS_FNIDX__IBM_POWER_OFF_UPS,
66 RTAS_FNIDX__IBM_QUERY_INTERRUPT_SOURCE_NUMBER,
67 RTAS_FNIDX__IBM_QUERY_PE_DMA_WINDOW,
68 RTAS_FNIDX__IBM_READ_PCI_CONFIG,
69 RTAS_FNIDX__IBM_READ_SLOT_RESET_STATE,
70 RTAS_FNIDX__IBM_READ_SLOT_RESET_STATE2,
71 RTAS_FNIDX__IBM_REMOVE_PE_DMA_WINDOW,
72 RTAS_FNIDX__IBM_RESET_PE_DMA_WINDOW,
73 RTAS_FNIDX__IBM_SCAN_LOG_DUMP,
74 RTAS_FNIDX__IBM_SET_DYNAMIC_INDICATOR,
75 RTAS_FNIDX__IBM_SET_EEH_OPTION,
76 RTAS_FNIDX__IBM_SET_SLOT_RESET,
77 RTAS_FNIDX__IBM_SET_SYSTEM_PARAMETER,
78 RTAS_FNIDX__IBM_SET_XIVE,
79 RTAS_FNIDX__IBM_SLOT_ERROR_DETAIL,
80 RTAS_FNIDX__IBM_SUSPEND_ME,
81 RTAS_FNIDX__IBM_TUNE_DMA_PARMS,
82 RTAS_FNIDX__IBM_UPDATE_FLASH_64_AND_REBOOT,
83 RTAS_FNIDX__IBM_UPDATE_NODES,
84 RTAS_FNIDX__IBM_UPDATE_PROPERTIES,
85 RTAS_FNIDX__IBM_VALIDATE_FLASH_IMAGE,
86 RTAS_FNIDX__IBM_WRITE_PCI_CONFIG,
87 RTAS_FNIDX__NVRAM_FETCH,
88 RTAS_FNIDX__NVRAM_STORE,
89 RTAS_FNIDX__POWER_OFF,
90 RTAS_FNIDX__PUT_TERM_CHAR,
91 RTAS_FNIDX__QUERY_CPU_STOPPED_STATE,
92 RTAS_FNIDX__READ_PCI_CONFIG,
93 RTAS_FNIDX__RTAS_LAST_ERROR,
94 RTAS_FNIDX__SET_INDICATOR,
95 RTAS_FNIDX__SET_POWER_LEVEL,
96 RTAS_FNIDX__SET_TIME_FOR_POWER_ON,
97 RTAS_FNIDX__SET_TIME_OF_DAY,
98 RTAS_FNIDX__START_CPU,
99 RTAS_FNIDX__STOP_SELF,
100 RTAS_FNIDX__SYSTEM_REBOOT,
101 RTAS_FNIDX__THAW_TIME_BASE,
102 RTAS_FNIDX__WRITE_PCI_CONFIG,
103};
104
105/*
106 * Opaque handle for client code to refer to RTAS functions. All valid
107 * function handles are build-time constants prefixed with RTAS_FN_.
108 */
109typedef struct {
110 const enum rtas_function_index index;
111} rtas_fn_handle_t;
112
113
114#define rtas_fn_handle(x_) ((const rtas_fn_handle_t) { .index = x_, })
115
116#define RTAS_FN_CHECK_EXCEPTION rtas_fn_handle(RTAS_FNIDX__CHECK_EXCEPTION)
117#define RTAS_FN_DISPLAY_CHARACTER rtas_fn_handle(RTAS_FNIDX__DISPLAY_CHARACTER)
118#define RTAS_FN_EVENT_SCAN rtas_fn_handle(RTAS_FNIDX__EVENT_SCAN)
119#define RTAS_FN_FREEZE_TIME_BASE rtas_fn_handle(RTAS_FNIDX__FREEZE_TIME_BASE)
120#define RTAS_FN_GET_POWER_LEVEL rtas_fn_handle(RTAS_FNIDX__GET_POWER_LEVEL)
121#define RTAS_FN_GET_SENSOR_STATE rtas_fn_handle(RTAS_FNIDX__GET_SENSOR_STATE)
122#define RTAS_FN_GET_TERM_CHAR rtas_fn_handle(RTAS_FNIDX__GET_TERM_CHAR)
123#define RTAS_FN_GET_TIME_OF_DAY rtas_fn_handle(RTAS_FNIDX__GET_TIME_OF_DAY)
124#define RTAS_FN_IBM_ACTIVATE_FIRMWARE rtas_fn_handle(RTAS_FNIDX__IBM_ACTIVATE_FIRMWARE)
125#define RTAS_FN_IBM_CBE_START_PTCAL rtas_fn_handle(RTAS_FNIDX__IBM_CBE_START_PTCAL)
126#define RTAS_FN_IBM_CBE_STOP_PTCAL rtas_fn_handle(RTAS_FNIDX__IBM_CBE_STOP_PTCAL)
127#define RTAS_FN_IBM_CHANGE_MSI rtas_fn_handle(RTAS_FNIDX__IBM_CHANGE_MSI)
128#define RTAS_FN_IBM_CLOSE_ERRINJCT rtas_fn_handle(RTAS_FNIDX__IBM_CLOSE_ERRINJCT)
129#define RTAS_FN_IBM_CONFIGURE_BRIDGE rtas_fn_handle(RTAS_FNIDX__IBM_CONFIGURE_BRIDGE)
130#define RTAS_FN_IBM_CONFIGURE_CONNECTOR rtas_fn_handle(RTAS_FNIDX__IBM_CONFIGURE_CONNECTOR)
131#define RTAS_FN_IBM_CONFIGURE_KERNEL_DUMP rtas_fn_handle(RTAS_FNIDX__IBM_CONFIGURE_KERNEL_DUMP)
132#define RTAS_FN_IBM_CONFIGURE_PE rtas_fn_handle(RTAS_FNIDX__IBM_CONFIGURE_PE)
133#define RTAS_FN_IBM_CREATE_PE_DMA_WINDOW rtas_fn_handle(RTAS_FNIDX__IBM_CREATE_PE_DMA_WINDOW)
134#define RTAS_FN_IBM_DISPLAY_MESSAGE rtas_fn_handle(RTAS_FNIDX__IBM_DISPLAY_MESSAGE)
135#define RTAS_FN_IBM_ERRINJCT rtas_fn_handle(RTAS_FNIDX__IBM_ERRINJCT)
136#define RTAS_FN_IBM_EXTI2C rtas_fn_handle(RTAS_FNIDX__IBM_EXTI2C)
137#define RTAS_FN_IBM_GET_CONFIG_ADDR_INFO rtas_fn_handle(RTAS_FNIDX__IBM_GET_CONFIG_ADDR_INFO)
138#define RTAS_FN_IBM_GET_CONFIG_ADDR_INFO2 rtas_fn_handle(RTAS_FNIDX__IBM_GET_CONFIG_ADDR_INFO2)
139#define RTAS_FN_IBM_GET_DYNAMIC_SENSOR_STATE rtas_fn_handle(RTAS_FNIDX__IBM_GET_DYNAMIC_SENSOR_STATE)
140#define RTAS_FN_IBM_GET_INDICES rtas_fn_handle(RTAS_FNIDX__IBM_GET_INDICES)
141#define RTAS_FN_IBM_GET_RIO_TOPOLOGY rtas_fn_handle(RTAS_FNIDX__IBM_GET_RIO_TOPOLOGY)
142#define RTAS_FN_IBM_GET_SYSTEM_PARAMETER rtas_fn_handle(RTAS_FNIDX__IBM_GET_SYSTEM_PARAMETER)
143#define RTAS_FN_IBM_GET_VPD rtas_fn_handle(RTAS_FNIDX__IBM_GET_VPD)
144#define RTAS_FN_IBM_GET_XIVE rtas_fn_handle(RTAS_FNIDX__IBM_GET_XIVE)
145#define RTAS_FN_IBM_INT_OFF rtas_fn_handle(RTAS_FNIDX__IBM_INT_OFF)
146#define RTAS_FN_IBM_INT_ON rtas_fn_handle(RTAS_FNIDX__IBM_INT_ON)
147#define RTAS_FN_IBM_IO_QUIESCE_ACK rtas_fn_handle(RTAS_FNIDX__IBM_IO_QUIESCE_ACK)
148#define RTAS_FN_IBM_LPAR_PERFTOOLS rtas_fn_handle(RTAS_FNIDX__IBM_LPAR_PERFTOOLS)
149#define RTAS_FN_IBM_MANAGE_FLASH_IMAGE rtas_fn_handle(RTAS_FNIDX__IBM_MANAGE_FLASH_IMAGE)
150#define RTAS_FN_IBM_MANAGE_STORAGE_PRESERVATION rtas_fn_handle(RTAS_FNIDX__IBM_MANAGE_STORAGE_PRESERVATION)
151#define RTAS_FN_IBM_NMI_INTERLOCK rtas_fn_handle(RTAS_FNIDX__IBM_NMI_INTERLOCK)
152#define RTAS_FN_IBM_NMI_REGISTER rtas_fn_handle(RTAS_FNIDX__IBM_NMI_REGISTER)
153#define RTAS_FN_IBM_OPEN_ERRINJCT rtas_fn_handle(RTAS_FNIDX__IBM_OPEN_ERRINJCT)
154#define RTAS_FN_IBM_OPEN_SRIOV_ALLOW_UNFREEZE rtas_fn_handle(RTAS_FNIDX__IBM_OPEN_SRIOV_ALLOW_UNFREEZE)
155#define RTAS_FN_IBM_OPEN_SRIOV_MAP_PE_NUMBER rtas_fn_handle(RTAS_FNIDX__IBM_OPEN_SRIOV_MAP_PE_NUMBER)
156#define RTAS_FN_IBM_OS_TERM rtas_fn_handle(RTAS_FNIDX__IBM_OS_TERM)
157#define RTAS_FN_IBM_PARTNER_CONTROL rtas_fn_handle(RTAS_FNIDX__IBM_PARTNER_CONTROL)
158#define RTAS_FN_IBM_PHYSICAL_ATTESTATION rtas_fn_handle(RTAS_FNIDX__IBM_PHYSICAL_ATTESTATION)
159#define RTAS_FN_IBM_PLATFORM_DUMP rtas_fn_handle(RTAS_FNIDX__IBM_PLATFORM_DUMP)
160#define RTAS_FN_IBM_POWER_OFF_UPS rtas_fn_handle(RTAS_FNIDX__IBM_POWER_OFF_UPS)
161#define RTAS_FN_IBM_QUERY_INTERRUPT_SOURCE_NUMBER rtas_fn_handle(RTAS_FNIDX__IBM_QUERY_INTERRUPT_SOURCE_NUMBER)
162#define RTAS_FN_IBM_QUERY_PE_DMA_WINDOW rtas_fn_handle(RTAS_FNIDX__IBM_QUERY_PE_DMA_WINDOW)
163#define RTAS_FN_IBM_READ_PCI_CONFIG rtas_fn_handle(RTAS_FNIDX__IBM_READ_PCI_CONFIG)
164#define RTAS_FN_IBM_READ_SLOT_RESET_STATE rtas_fn_handle(RTAS_FNIDX__IBM_READ_SLOT_RESET_STATE)
165#define RTAS_FN_IBM_READ_SLOT_RESET_STATE2 rtas_fn_handle(RTAS_FNIDX__IBM_READ_SLOT_RESET_STATE2)
166#define RTAS_FN_IBM_REMOVE_PE_DMA_WINDOW rtas_fn_handle(RTAS_FNIDX__IBM_REMOVE_PE_DMA_WINDOW)
167#define RTAS_FN_IBM_RESET_PE_DMA_WINDOW rtas_fn_handle(RTAS_FNIDX__IBM_RESET_PE_DMA_WINDOW)
168#define RTAS_FN_IBM_SCAN_LOG_DUMP rtas_fn_handle(RTAS_FNIDX__IBM_SCAN_LOG_DUMP)
169#define RTAS_FN_IBM_SET_DYNAMIC_INDICATOR rtas_fn_handle(RTAS_FNIDX__IBM_SET_DYNAMIC_INDICATOR)
170#define RTAS_FN_IBM_SET_EEH_OPTION rtas_fn_handle(RTAS_FNIDX__IBM_SET_EEH_OPTION)
171#define RTAS_FN_IBM_SET_SLOT_RESET rtas_fn_handle(RTAS_FNIDX__IBM_SET_SLOT_RESET)
172#define RTAS_FN_IBM_SET_SYSTEM_PARAMETER rtas_fn_handle(RTAS_FNIDX__IBM_SET_SYSTEM_PARAMETER)
173#define RTAS_FN_IBM_SET_XIVE rtas_fn_handle(RTAS_FNIDX__IBM_SET_XIVE)
174#define RTAS_FN_IBM_SLOT_ERROR_DETAIL rtas_fn_handle(RTAS_FNIDX__IBM_SLOT_ERROR_DETAIL)
175#define RTAS_FN_IBM_SUSPEND_ME rtas_fn_handle(RTAS_FNIDX__IBM_SUSPEND_ME)
176#define RTAS_FN_IBM_TUNE_DMA_PARMS rtas_fn_handle(RTAS_FNIDX__IBM_TUNE_DMA_PARMS)
177#define RTAS_FN_IBM_UPDATE_FLASH_64_AND_REBOOT rtas_fn_handle(RTAS_FNIDX__IBM_UPDATE_FLASH_64_AND_REBOOT)
178#define RTAS_FN_IBM_UPDATE_NODES rtas_fn_handle(RTAS_FNIDX__IBM_UPDATE_NODES)
179#define RTAS_FN_IBM_UPDATE_PROPERTIES rtas_fn_handle(RTAS_FNIDX__IBM_UPDATE_PROPERTIES)
180#define RTAS_FN_IBM_VALIDATE_FLASH_IMAGE rtas_fn_handle(RTAS_FNIDX__IBM_VALIDATE_FLASH_IMAGE)
181#define RTAS_FN_IBM_WRITE_PCI_CONFIG rtas_fn_handle(RTAS_FNIDX__IBM_WRITE_PCI_CONFIG)
182#define RTAS_FN_NVRAM_FETCH rtas_fn_handle(RTAS_FNIDX__NVRAM_FETCH)
183#define RTAS_FN_NVRAM_STORE rtas_fn_handle(RTAS_FNIDX__NVRAM_STORE)
184#define RTAS_FN_POWER_OFF rtas_fn_handle(RTAS_FNIDX__POWER_OFF)
185#define RTAS_FN_PUT_TERM_CHAR rtas_fn_handle(RTAS_FNIDX__PUT_TERM_CHAR)
186#define RTAS_FN_QUERY_CPU_STOPPED_STATE rtas_fn_handle(RTAS_FNIDX__QUERY_CPU_STOPPED_STATE)
187#define RTAS_FN_READ_PCI_CONFIG rtas_fn_handle(RTAS_FNIDX__READ_PCI_CONFIG)
188#define RTAS_FN_RTAS_LAST_ERROR rtas_fn_handle(RTAS_FNIDX__RTAS_LAST_ERROR)
189#define RTAS_FN_SET_INDICATOR rtas_fn_handle(RTAS_FNIDX__SET_INDICATOR)
190#define RTAS_FN_SET_POWER_LEVEL rtas_fn_handle(RTAS_FNIDX__SET_POWER_LEVEL)
191#define RTAS_FN_SET_TIME_FOR_POWER_ON rtas_fn_handle(RTAS_FNIDX__SET_TIME_FOR_POWER_ON)
192#define RTAS_FN_SET_TIME_OF_DAY rtas_fn_handle(RTAS_FNIDX__SET_TIME_OF_DAY)
193#define RTAS_FN_START_CPU rtas_fn_handle(RTAS_FNIDX__START_CPU)
194#define RTAS_FN_STOP_SELF rtas_fn_handle(RTAS_FNIDX__STOP_SELF)
195#define RTAS_FN_SYSTEM_REBOOT rtas_fn_handle(RTAS_FNIDX__SYSTEM_REBOOT)
196#define RTAS_FN_THAW_TIME_BASE rtas_fn_handle(RTAS_FNIDX__THAW_TIME_BASE)
197#define RTAS_FN_WRITE_PCI_CONFIG rtas_fn_handle(RTAS_FNIDX__WRITE_PCI_CONFIG)
198
199#define RTAS_UNKNOWN_SERVICE (-1)
200#define RTAS_INSTANTIATE_MAX (1ULL<<30) /* Don't instantiate rtas at/above this value */
201
202/* Memory set aside for sys_rtas to use with calls that need a work area. */
203#define RTAS_USER_REGION_SIZE (64 * 1024)
204
205/*
206 * Common RTAS function return values, derived from the table "RTAS
207 * Status Word Values" in PAPR+ v2.13 7.2.8: "Return Codes". If a
208 * function can return a value in this table then generally it has the
209 * meaning listed here. More extended commentary in the documentation
210 * for rtas_call().
211 *
212 * RTAS functions may use negative and positive numbers not in this
213 * set for function-specific error and success conditions,
214 * respectively.
215 */
216#define RTAS_SUCCESS 0 /* Success. */
217#define RTAS_HARDWARE_ERROR -1 /* Hardware or other unspecified error. */
218#define RTAS_BUSY -2 /* Retry immediately. */
219#define RTAS_INVALID_PARAMETER -3 /* Invalid indicator/domain/sensor etc. */
220#define RTAS_UNEXPECTED_STATE_CHANGE -7 /* Seems limited to EEH and slot reset. */
221#define RTAS_EXTENDED_DELAY_MIN 9900 /* Retry after delaying for ~1ms. */
222#define RTAS_EXTENDED_DELAY_MAX 9905 /* Retry after delaying for ~100s. */
223#define RTAS_ML_ISOLATION_ERROR -9000 /* Multi-level isolation error. */
224
225/* statuses specific to ibm,suspend-me */
226#define RTAS_SUSPEND_ABORTED 9000 /* Suspension aborted */
227#define RTAS_NOT_SUSPENDABLE -9004 /* Partition not suspendable */
228#define RTAS_THREADS_ACTIVE -9005 /* Multiple processor threads active */
229#define RTAS_OUTSTANDING_COPROC -9006 /* Outstanding coprocessor operations */
230
231/* RTAS event classes */
232#define RTAS_INTERNAL_ERROR 0x80000000 /* set bit 0 */
233#define RTAS_EPOW_WARNING 0x40000000 /* set bit 1 */
234#define RTAS_HOTPLUG_EVENTS 0x10000000 /* set bit 3 */
235#define RTAS_IO_EVENTS 0x08000000 /* set bit 4 */
236#define RTAS_EVENT_SCAN_ALL_EVENTS 0xffffffff
237
238/* RTAS event severity */
239#define RTAS_SEVERITY_FATAL 0x5
240#define RTAS_SEVERITY_ERROR 0x4
241#define RTAS_SEVERITY_ERROR_SYNC 0x3
242#define RTAS_SEVERITY_WARNING 0x2
243#define RTAS_SEVERITY_EVENT 0x1
244#define RTAS_SEVERITY_NO_ERROR 0x0
245
246/* RTAS event disposition */
247#define RTAS_DISP_FULLY_RECOVERED 0x0
248#define RTAS_DISP_LIMITED_RECOVERY 0x1
249#define RTAS_DISP_NOT_RECOVERED 0x2
250
251/* RTAS event initiator */
252#define RTAS_INITIATOR_UNKNOWN 0x0
253#define RTAS_INITIATOR_CPU 0x1
254#define RTAS_INITIATOR_PCI 0x2
255#define RTAS_INITIATOR_ISA 0x3
256#define RTAS_INITIATOR_MEMORY 0x4
257#define RTAS_INITIATOR_POWERMGM 0x5
258
259/* RTAS event target */
260#define RTAS_TARGET_UNKNOWN 0x0
261#define RTAS_TARGET_CPU 0x1
262#define RTAS_TARGET_PCI 0x2
263#define RTAS_TARGET_ISA 0x3
264#define RTAS_TARGET_MEMORY 0x4
265#define RTAS_TARGET_POWERMGM 0x5
266
267/* RTAS event type */
268#define RTAS_TYPE_RETRY 0x01
269#define RTAS_TYPE_TCE_ERR 0x02
270#define RTAS_TYPE_INTERN_DEV_FAIL 0x03
271#define RTAS_TYPE_TIMEOUT 0x04
272#define RTAS_TYPE_DATA_PARITY 0x05
273#define RTAS_TYPE_ADDR_PARITY 0x06
274#define RTAS_TYPE_CACHE_PARITY 0x07
275#define RTAS_TYPE_ADDR_INVALID 0x08
276#define RTAS_TYPE_ECC_UNCORR 0x09
277#define RTAS_TYPE_ECC_CORR 0x0a
278#define RTAS_TYPE_EPOW 0x40
279#define RTAS_TYPE_PLATFORM 0xE0
280#define RTAS_TYPE_IO 0xE1
281#define RTAS_TYPE_INFO 0xE2
282#define RTAS_TYPE_DEALLOC 0xE3
283#define RTAS_TYPE_DUMP 0xE4
284#define RTAS_TYPE_HOTPLUG 0xE5
285/* I don't add PowerMGM events right now, this is a different topic */
286#define RTAS_TYPE_PMGM_POWER_SW_ON 0x60
287#define RTAS_TYPE_PMGM_POWER_SW_OFF 0x61
288#define RTAS_TYPE_PMGM_LID_OPEN 0x62
289#define RTAS_TYPE_PMGM_LID_CLOSE 0x63
290#define RTAS_TYPE_PMGM_SLEEP_BTN 0x64
291#define RTAS_TYPE_PMGM_WAKE_BTN 0x65
292#define RTAS_TYPE_PMGM_BATTERY_WARN 0x66
293#define RTAS_TYPE_PMGM_BATTERY_CRIT 0x67
294#define RTAS_TYPE_PMGM_SWITCH_TO_BAT 0x68
295#define RTAS_TYPE_PMGM_SWITCH_TO_AC 0x69
296#define RTAS_TYPE_PMGM_KBD_OR_MOUSE 0x6a
297#define RTAS_TYPE_PMGM_ENCLOS_OPEN 0x6b
298#define RTAS_TYPE_PMGM_ENCLOS_CLOSED 0x6c
299#define RTAS_TYPE_PMGM_RING_INDICATE 0x6d
300#define RTAS_TYPE_PMGM_LAN_ATTENTION 0x6e
301#define RTAS_TYPE_PMGM_TIME_ALARM 0x6f
302#define RTAS_TYPE_PMGM_CONFIG_CHANGE 0x70
303#define RTAS_TYPE_PMGM_SERVICE_PROC 0x71
304/* Platform Resource Reassignment Notification */
305#define RTAS_TYPE_PRRN 0xA0
306
307/* RTAS check-exception vector offset */
308#define RTAS_VECTOR_EXTERNAL_INTERRUPT 0x500
309
310static inline uint8_t rtas_error_severity(const struct rtas_error_log *elog)
311{
312 return (elog->byte1 & 0xE0) >> 5;
313}
314
315static inline uint8_t rtas_error_disposition(const struct rtas_error_log *elog)
316{
317 return (elog->byte1 & 0x18) >> 3;
318}
319
320static inline
321void rtas_set_disposition_recovered(struct rtas_error_log *elog)
322{
323 elog->byte1 &= ~0x18;
324 elog->byte1 |= (RTAS_DISP_FULLY_RECOVERED << 3);
325}
326
327static inline uint8_t rtas_error_extended(const struct rtas_error_log *elog)
328{
329 return (elog->byte1 & 0x04) >> 2;
330}
331
332static inline uint8_t rtas_error_initiator(const struct rtas_error_log *elog)
333{
334 return (elog->byte2 & 0xf0) >> 4;
335}
336
337#define rtas_error_type(x) ((x)->byte3)
338
339static inline
340uint32_t rtas_error_extended_log_length(const struct rtas_error_log *elog)
341{
342 return be32_to_cpu(elog->extended_log_length);
343}
344
345#define RTAS_V6EXT_LOG_FORMAT_EVENT_LOG 14
346
347#define RTAS_V6EXT_COMPANY_ID_IBM (('I' << 24) | ('B' << 16) | ('M' << 8))
348
349static
350inline uint8_t rtas_ext_event_log_format(struct rtas_ext_event_log_v6 *ext_log)
351{
352 return ext_log->byte2 & 0x0F;
353}
354
355static
356inline uint32_t rtas_ext_event_company_id(struct rtas_ext_event_log_v6 *ext_log)
357{
358 return be32_to_cpu(ext_log->company_id);
359}
360
361/* pSeries event log format */
362
363/* Two bytes ASCII section IDs */
364#define PSERIES_ELOG_SECT_ID_PRIV_HDR (('P' << 8) | 'H')
365#define PSERIES_ELOG_SECT_ID_USER_HDR (('U' << 8) | 'H')
366#define PSERIES_ELOG_SECT_ID_PRIMARY_SRC (('P' << 8) | 'S')
367#define PSERIES_ELOG_SECT_ID_EXTENDED_UH (('E' << 8) | 'H')
368#define PSERIES_ELOG_SECT_ID_FAILING_MTMS (('M' << 8) | 'T')
369#define PSERIES_ELOG_SECT_ID_SECONDARY_SRC (('S' << 8) | 'S')
370#define PSERIES_ELOG_SECT_ID_DUMP_LOCATOR (('D' << 8) | 'H')
371#define PSERIES_ELOG_SECT_ID_FW_ERROR (('S' << 8) | 'W')
372#define PSERIES_ELOG_SECT_ID_IMPACT_PART_ID (('L' << 8) | 'P')
373#define PSERIES_ELOG_SECT_ID_LOGIC_RESOURCE_ID (('L' << 8) | 'R')
374#define PSERIES_ELOG_SECT_ID_HMC_ID (('H' << 8) | 'M')
375#define PSERIES_ELOG_SECT_ID_EPOW (('E' << 8) | 'P')
376#define PSERIES_ELOG_SECT_ID_IO_EVENT (('I' << 8) | 'E')
377#define PSERIES_ELOG_SECT_ID_MANUFACT_INFO (('M' << 8) | 'I')
378#define PSERIES_ELOG_SECT_ID_CALL_HOME (('C' << 8) | 'H')
379#define PSERIES_ELOG_SECT_ID_USER_DEF (('U' << 8) | 'D')
380#define PSERIES_ELOG_SECT_ID_HOTPLUG (('H' << 8) | 'P')
381#define PSERIES_ELOG_SECT_ID_MCE (('M' << 8) | 'C')
382
383static
384inline uint16_t pseries_errorlog_id(struct pseries_errorlog *sect)
385{
386 return be16_to_cpu(sect->id);
387}
388
389static
390inline uint16_t pseries_errorlog_length(struct pseries_errorlog *sect)
391{
392 return be16_to_cpu(sect->length);
393}
394
395#define PSERIES_HP_ELOG_RESOURCE_CPU 1
396#define PSERIES_HP_ELOG_RESOURCE_MEM 2
397#define PSERIES_HP_ELOG_RESOURCE_SLOT 3
398#define PSERIES_HP_ELOG_RESOURCE_PHB 4
399#define PSERIES_HP_ELOG_RESOURCE_PMEM 6
400
401#define PSERIES_HP_ELOG_ACTION_ADD 1
402#define PSERIES_HP_ELOG_ACTION_REMOVE 2
403
404#define PSERIES_HP_ELOG_ID_DRC_NAME 1
405#define PSERIES_HP_ELOG_ID_DRC_INDEX 2
406#define PSERIES_HP_ELOG_ID_DRC_COUNT 3
407#define PSERIES_HP_ELOG_ID_DRC_IC 4
408
409struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log,
410 uint16_t section_id);
411
412/*
413 * This can be set by the rtas_flash module so that it can get called
414 * as the absolutely last thing before the kernel terminates.
415 */
416extern void (*rtas_flash_term_hook)(int);
417
418extern struct rtas_t rtas;
419
420s32 rtas_function_token(const rtas_fn_handle_t handle);
421static inline bool rtas_function_implemented(const rtas_fn_handle_t handle)
422{
423 return rtas_function_token(handle) != RTAS_UNKNOWN_SERVICE;
424}
425int rtas_token(const char *service);
426int rtas_call(int token, int nargs, int nret, int *outputs, ...);
427void rtas_call_unlocked(struct rtas_args *args, int token, int nargs,
428 int nret, ...);
429void __noreturn rtas_restart(char *cmd);
430void rtas_power_off(void);
431void __noreturn rtas_halt(void);
432void rtas_os_term(char *str);
433void rtas_activate_firmware(void);
434int rtas_get_sensor(int sensor, int index, int *state);
435int rtas_get_sensor_fast(int sensor, int index, int *state);
436int rtas_get_power_level(int powerdomain, int *level);
437int rtas_set_power_level(int powerdomain, int level, int *setlevel);
438bool rtas_indicator_present(int token, int *maxindex);
439int rtas_set_indicator(int indicator, int index, int new_value);
440int rtas_set_indicator_fast(int indicator, int index, int new_value);
441void rtas_progress(char *s, unsigned short hex);
442int rtas_ibm_suspend_me(int *fw_status);
443int rtas_error_rc(int rtas_rc);
444
445struct rtc_time;
446time64_t rtas_get_boot_time(void);
447void rtas_get_rtc_time(struct rtc_time *rtc_time);
448int rtas_set_rtc_time(struct rtc_time *rtc_time);
449
450unsigned int rtas_busy_delay_time(int status);
451bool rtas_busy_delay(int status);
452
453int early_init_dt_scan_rtas(unsigned long node, const char *uname, int depth, void *data);
454
455void pSeries_log_error(char *buf, unsigned int err_type, int fatal);
456
457#ifdef CONFIG_PPC_PSERIES
458extern time64_t last_rtas_event;
459int clobbering_unread_rtas_event(void);
460int rtas_syscall_dispatch_ibm_suspend_me(u64 handle);
461#else
462static inline int clobbering_unread_rtas_event(void) { return 0; }
463static inline int rtas_syscall_dispatch_ibm_suspend_me(u64 handle)
464{
465 return -EINVAL;
466}
467#endif
468
469#ifdef CONFIG_PPC_RTAS_DAEMON
470void rtas_cancel_event_scan(void);
471#else
472static inline void rtas_cancel_event_scan(void) { }
473#endif
474
475/* Error types logged. */
476#define ERR_FLAG_ALREADY_LOGGED 0x0
477#define ERR_FLAG_BOOT 0x1 /* log was pulled from NVRAM on boot */
478#define ERR_TYPE_RTAS_LOG 0x2 /* from rtas event-scan */
479#define ERR_TYPE_KERNEL_PANIC 0x4 /* from die()/panic() */
480#define ERR_TYPE_KERNEL_PANIC_GZ 0x8 /* ditto, compressed */
481
482/* All the types and not flags */
483#define ERR_TYPE_MASK \
484 (ERR_TYPE_RTAS_LOG | ERR_TYPE_KERNEL_PANIC | ERR_TYPE_KERNEL_PANIC_GZ)
485
486#define RTAS_DEBUG KERN_DEBUG "RTAS: "
487
488#define RTAS_ERROR_LOG_MAX 2048
489
490/*
491 * Return the firmware-specified size of the error log buffer
492 * for all rtas calls that require an error buffer argument.
493 * This includes 'check-exception' and 'rtas-last-error'.
494 */
495int rtas_get_error_log_max(void);
496
497/* Event Scan Parameters */
498#define EVENT_SCAN_ALL_EVENTS 0xf0000000
499#define SURVEILLANCE_TOKEN 9000
500#define LOG_NUMBER 64 /* must be a power of two */
501#define LOG_NUMBER_MASK (LOG_NUMBER-1)
502
503/* Some RTAS ops require a data buffer and that buffer must be < 4G.
504 * Rather than having a memory allocator, just use this buffer
505 * (get the lock first), make the RTAS call. Copy the data instead
506 * of holding the buffer for long.
507 */
508
509#define RTAS_DATA_BUF_SIZE 4096
510extern spinlock_t rtas_data_buf_lock;
511extern char rtas_data_buf[RTAS_DATA_BUF_SIZE];
512
513/* RMO buffer reserved for user-space RTAS use */
514extern unsigned long rtas_rmo_buf;
515
516extern struct mutex rtas_ibm_get_vpd_lock;
517
518#define GLOBAL_INTERRUPT_QUEUE 9005
519
520/**
521 * rtas_config_addr - Format a busno, devfn and reg for RTAS.
522 * @busno: The bus number.
523 * @devfn: The device and function number as encoded by PCI_DEVFN().
524 * @reg: The register number.
525 *
526 * This function encodes the given busno, devfn and register number as
527 * required for RTAS calls that take a "config_addr" parameter.
528 * See PAPR requirement 7.3.4-1 for more info.
529 */
530static inline u32 rtas_config_addr(int busno, int devfn, int reg)
531{
532 return ((reg & 0xf00) << 20) | ((busno & 0xff) << 16) |
533 (devfn << 8) | (reg & 0xff);
534}
535
536void rtas_give_timebase(void);
537void rtas_take_timebase(void);
538
539#ifdef CONFIG_PPC_RTAS
540static inline int page_is_rtas_user_buf(unsigned long pfn)
541{
542 unsigned long paddr = (pfn << PAGE_SHIFT);
543 if (paddr >= rtas_rmo_buf && paddr < (rtas_rmo_buf + RTAS_USER_REGION_SIZE))
544 return 1;
545 return 0;
546}
547
548/* Not the best place to put pSeries_coalesce_init, will be fixed when we
549 * move some of the rtas suspend-me stuff to pseries */
550void pSeries_coalesce_init(void);
551void rtas_initialize(void);
552#else
553static inline int page_is_rtas_user_buf(unsigned long pfn) { return 0;}
554static inline void pSeries_coalesce_init(void) { }
555static inline void rtas_initialize(void) { }
556#endif
557
558#ifdef CONFIG_HV_PERF_CTRS
559void read_24x7_sys_info(void);
560#else
561static inline void read_24x7_sys_info(void) { }
562#endif
563
564#endif /* __KERNEL__ */
565#endif /* _POWERPC_RTAS_H */
1#ifndef _POWERPC_RTAS_H
2#define _POWERPC_RTAS_H
3#ifdef __KERNEL__
4
5#include <linux/spinlock.h>
6#include <asm/page.h>
7#include <linux/time.h>
8
9/*
10 * Definitions for talking to the RTAS on CHRP machines.
11 *
12 * Copyright (C) 2001 Peter Bergner
13 * Copyright (C) 2001 PPC 64 Team, IBM Corp
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation; either version
18 * 2 of the License, or (at your option) any later version.
19 */
20
21#define RTAS_UNKNOWN_SERVICE (-1)
22#define RTAS_INSTANTIATE_MAX (1ULL<<30) /* Don't instantiate rtas at/above this value */
23
24/* Buffer size for ppc_rtas system call. */
25#define RTAS_RMOBUF_MAX (64 * 1024)
26
27/* RTAS return status codes */
28#define RTAS_NOT_SUSPENDABLE -9004
29#define RTAS_BUSY -2 /* RTAS Busy */
30#define RTAS_EXTENDED_DELAY_MIN 9900
31#define RTAS_EXTENDED_DELAY_MAX 9905
32
33/*
34 * In general to call RTAS use rtas_token("string") to lookup
35 * an RTAS token for the given string (e.g. "event-scan").
36 * To actually perform the call use
37 * ret = rtas_call(token, n_in, n_out, ...)
38 * Where n_in is the number of input parameters and
39 * n_out is the number of output parameters
40 *
41 * If the "string" is invalid on this system, RTAS_UNKNOWN_SERVICE
42 * will be returned as a token. rtas_call() does look for this
43 * token and error out gracefully so rtas_call(rtas_token("str"), ...)
44 * may be safely used for one-shot calls to RTAS.
45 *
46 */
47
48typedef __be32 rtas_arg_t;
49
50struct rtas_args {
51 __be32 token;
52 __be32 nargs;
53 __be32 nret;
54 rtas_arg_t args[16];
55 rtas_arg_t *rets; /* Pointer to return values in args[]. */
56};
57
58struct rtas_t {
59 unsigned long entry; /* physical address pointer */
60 unsigned long base; /* physical address pointer */
61 unsigned long size;
62 arch_spinlock_t lock;
63 struct rtas_args args;
64 struct device_node *dev; /* virtual address pointer */
65};
66
67struct rtas_suspend_me_data {
68 atomic_t working; /* number of cpus accessing this struct */
69 atomic_t done;
70 int token; /* ibm,suspend-me */
71 atomic_t error;
72 struct completion *complete; /* wait on this until working == 0 */
73};
74
75/* RTAS event classes */
76#define RTAS_INTERNAL_ERROR 0x80000000 /* set bit 0 */
77#define RTAS_EPOW_WARNING 0x40000000 /* set bit 1 */
78#define RTAS_HOTPLUG_EVENTS 0x10000000 /* set bit 3 */
79#define RTAS_IO_EVENTS 0x08000000 /* set bit 4 */
80#define RTAS_EVENT_SCAN_ALL_EVENTS 0xffffffff
81
82/* RTAS event severity */
83#define RTAS_SEVERITY_FATAL 0x5
84#define RTAS_SEVERITY_ERROR 0x4
85#define RTAS_SEVERITY_ERROR_SYNC 0x3
86#define RTAS_SEVERITY_WARNING 0x2
87#define RTAS_SEVERITY_EVENT 0x1
88#define RTAS_SEVERITY_NO_ERROR 0x0
89
90/* RTAS event disposition */
91#define RTAS_DISP_FULLY_RECOVERED 0x0
92#define RTAS_DISP_LIMITED_RECOVERY 0x1
93#define RTAS_DISP_NOT_RECOVERED 0x2
94
95/* RTAS event initiator */
96#define RTAS_INITIATOR_UNKNOWN 0x0
97#define RTAS_INITIATOR_CPU 0x1
98#define RTAS_INITIATOR_PCI 0x2
99#define RTAS_INITIATOR_ISA 0x3
100#define RTAS_INITIATOR_MEMORY 0x4
101#define RTAS_INITIATOR_POWERMGM 0x5
102
103/* RTAS event target */
104#define RTAS_TARGET_UNKNOWN 0x0
105#define RTAS_TARGET_CPU 0x1
106#define RTAS_TARGET_PCI 0x2
107#define RTAS_TARGET_ISA 0x3
108#define RTAS_TARGET_MEMORY 0x4
109#define RTAS_TARGET_POWERMGM 0x5
110
111/* RTAS event type */
112#define RTAS_TYPE_RETRY 0x01
113#define RTAS_TYPE_TCE_ERR 0x02
114#define RTAS_TYPE_INTERN_DEV_FAIL 0x03
115#define RTAS_TYPE_TIMEOUT 0x04
116#define RTAS_TYPE_DATA_PARITY 0x05
117#define RTAS_TYPE_ADDR_PARITY 0x06
118#define RTAS_TYPE_CACHE_PARITY 0x07
119#define RTAS_TYPE_ADDR_INVALID 0x08
120#define RTAS_TYPE_ECC_UNCORR 0x09
121#define RTAS_TYPE_ECC_CORR 0x0a
122#define RTAS_TYPE_EPOW 0x40
123#define RTAS_TYPE_PLATFORM 0xE0
124#define RTAS_TYPE_IO 0xE1
125#define RTAS_TYPE_INFO 0xE2
126#define RTAS_TYPE_DEALLOC 0xE3
127#define RTAS_TYPE_DUMP 0xE4
128/* I don't add PowerMGM events right now, this is a different topic */
129#define RTAS_TYPE_PMGM_POWER_SW_ON 0x60
130#define RTAS_TYPE_PMGM_POWER_SW_OFF 0x61
131#define RTAS_TYPE_PMGM_LID_OPEN 0x62
132#define RTAS_TYPE_PMGM_LID_CLOSE 0x63
133#define RTAS_TYPE_PMGM_SLEEP_BTN 0x64
134#define RTAS_TYPE_PMGM_WAKE_BTN 0x65
135#define RTAS_TYPE_PMGM_BATTERY_WARN 0x66
136#define RTAS_TYPE_PMGM_BATTERY_CRIT 0x67
137#define RTAS_TYPE_PMGM_SWITCH_TO_BAT 0x68
138#define RTAS_TYPE_PMGM_SWITCH_TO_AC 0x69
139#define RTAS_TYPE_PMGM_KBD_OR_MOUSE 0x6a
140#define RTAS_TYPE_PMGM_ENCLOS_OPEN 0x6b
141#define RTAS_TYPE_PMGM_ENCLOS_CLOSED 0x6c
142#define RTAS_TYPE_PMGM_RING_INDICATE 0x6d
143#define RTAS_TYPE_PMGM_LAN_ATTENTION 0x6e
144#define RTAS_TYPE_PMGM_TIME_ALARM 0x6f
145#define RTAS_TYPE_PMGM_CONFIG_CHANGE 0x70
146#define RTAS_TYPE_PMGM_SERVICE_PROC 0x71
147/* Platform Resource Reassignment Notification */
148#define RTAS_TYPE_PRRN 0xA0
149
150/* RTAS check-exception vector offset */
151#define RTAS_VECTOR_EXTERNAL_INTERRUPT 0x500
152
153struct rtas_error_log {
154 /* Byte 0 */
155 uint8_t byte0; /* Architectural version */
156
157 /* Byte 1 */
158 uint8_t byte1;
159 /* XXXXXXXX
160 * XXX 3: Severity level of error
161 * XX 2: Degree of recovery
162 * X 1: Extended log present?
163 * XX 2: Reserved
164 */
165
166 /* Byte 2 */
167 uint8_t byte2;
168 /* XXXXXXXX
169 * XXXX 4: Initiator of event
170 * XXXX 4: Target of failed operation
171 */
172 uint8_t byte3; /* General event or error*/
173 __be32 extended_log_length; /* length in bytes */
174 unsigned char buffer[1]; /* Start of extended log */
175 /* Variable length. */
176};
177
178static inline uint8_t rtas_error_severity(const struct rtas_error_log *elog)
179{
180 return (elog->byte1 & 0xE0) >> 5;
181}
182
183static inline uint8_t rtas_error_disposition(const struct rtas_error_log *elog)
184{
185 return (elog->byte1 & 0x18) >> 3;
186}
187
188static inline uint8_t rtas_error_extended(const struct rtas_error_log *elog)
189{
190 return (elog->byte1 & 0x04) >> 2;
191}
192
193#define rtas_error_type(x) ((x)->byte3)
194
195static inline
196uint32_t rtas_error_extended_log_length(const struct rtas_error_log *elog)
197{
198 return be32_to_cpu(elog->extended_log_length);
199}
200
201#define RTAS_V6EXT_LOG_FORMAT_EVENT_LOG 14
202
203#define RTAS_V6EXT_COMPANY_ID_IBM (('I' << 24) | ('B' << 16) | ('M' << 8))
204
205/* RTAS general extended event log, Version 6. The extended log starts
206 * from "buffer" field of struct rtas_error_log defined above.
207 */
208struct rtas_ext_event_log_v6 {
209 /* Byte 0 */
210 uint8_t byte0;
211 /* XXXXXXXX
212 * X 1: Log valid
213 * X 1: Unrecoverable error
214 * X 1: Recoverable (correctable or successfully retried)
215 * X 1: Bypassed unrecoverable error (degraded operation)
216 * X 1: Predictive error
217 * X 1: "New" log (always 1 for data returned from RTAS)
218 * X 1: Big Endian
219 * X 1: Reserved
220 */
221
222 /* Byte 1 */
223 uint8_t byte1; /* reserved */
224
225 /* Byte 2 */
226 uint8_t byte2;
227 /* XXXXXXXX
228 * X 1: Set to 1 (indicating log is in PowerPC format)
229 * XXX 3: Reserved
230 * XXXX 4: Log format used for bytes 12-2047
231 */
232
233 /* Byte 3 */
234 uint8_t byte3; /* reserved */
235 /* Byte 4-11 */
236 uint8_t reserved[8]; /* reserved */
237 /* Byte 12-15 */
238 __be32 company_id; /* Company ID of the company */
239 /* that defines the format for */
240 /* the vendor specific log type */
241 /* Byte 16-end of log */
242 uint8_t vendor_log[1]; /* Start of vendor specific log */
243 /* Variable length. */
244};
245
246static
247inline uint8_t rtas_ext_event_log_format(struct rtas_ext_event_log_v6 *ext_log)
248{
249 return ext_log->byte2 & 0x0F;
250}
251
252static
253inline uint32_t rtas_ext_event_company_id(struct rtas_ext_event_log_v6 *ext_log)
254{
255 return be32_to_cpu(ext_log->company_id);
256}
257
258/* pSeries event log format */
259
260/* Two bytes ASCII section IDs */
261#define PSERIES_ELOG_SECT_ID_PRIV_HDR (('P' << 8) | 'H')
262#define PSERIES_ELOG_SECT_ID_USER_HDR (('U' << 8) | 'H')
263#define PSERIES_ELOG_SECT_ID_PRIMARY_SRC (('P' << 8) | 'S')
264#define PSERIES_ELOG_SECT_ID_EXTENDED_UH (('E' << 8) | 'H')
265#define PSERIES_ELOG_SECT_ID_FAILING_MTMS (('M' << 8) | 'T')
266#define PSERIES_ELOG_SECT_ID_SECONDARY_SRC (('S' << 8) | 'S')
267#define PSERIES_ELOG_SECT_ID_DUMP_LOCATOR (('D' << 8) | 'H')
268#define PSERIES_ELOG_SECT_ID_FW_ERROR (('S' << 8) | 'W')
269#define PSERIES_ELOG_SECT_ID_IMPACT_PART_ID (('L' << 8) | 'P')
270#define PSERIES_ELOG_SECT_ID_LOGIC_RESOURCE_ID (('L' << 8) | 'R')
271#define PSERIES_ELOG_SECT_ID_HMC_ID (('H' << 8) | 'M')
272#define PSERIES_ELOG_SECT_ID_EPOW (('E' << 8) | 'P')
273#define PSERIES_ELOG_SECT_ID_IO_EVENT (('I' << 8) | 'E')
274#define PSERIES_ELOG_SECT_ID_MANUFACT_INFO (('M' << 8) | 'I')
275#define PSERIES_ELOG_SECT_ID_CALL_HOME (('C' << 8) | 'H')
276#define PSERIES_ELOG_SECT_ID_USER_DEF (('U' << 8) | 'D')
277#define PSERIES_ELOG_SECT_ID_HOTPLUG (('H' << 8) | 'P')
278
279/* Vendor specific Platform Event Log Format, Version 6, section header */
280struct pseries_errorlog {
281 __be16 id; /* 0x00 2-byte ASCII section ID */
282 __be16 length; /* 0x02 Section length in bytes */
283 uint8_t version; /* 0x04 Section version */
284 uint8_t subtype; /* 0x05 Section subtype */
285 __be16 creator_component; /* 0x06 Creator component ID */
286 uint8_t data[]; /* 0x08 Start of section data */
287};
288
289static
290inline uint16_t pseries_errorlog_id(struct pseries_errorlog *sect)
291{
292 return be16_to_cpu(sect->id);
293}
294
295static
296inline uint16_t pseries_errorlog_length(struct pseries_errorlog *sect)
297{
298 return be16_to_cpu(sect->length);
299}
300
301/* RTAS pseries hotplug errorlog section */
302struct pseries_hp_errorlog {
303 u8 resource;
304 u8 action;
305 u8 id_type;
306 u8 reserved;
307 union {
308 __be32 drc_index;
309 __be32 drc_count;
310 char drc_name[1];
311 } _drc_u;
312};
313
314#define PSERIES_HP_ELOG_RESOURCE_CPU 1
315#define PSERIES_HP_ELOG_RESOURCE_MEM 2
316#define PSERIES_HP_ELOG_RESOURCE_SLOT 3
317#define PSERIES_HP_ELOG_RESOURCE_PHB 4
318
319#define PSERIES_HP_ELOG_ACTION_ADD 1
320#define PSERIES_HP_ELOG_ACTION_REMOVE 2
321
322#define PSERIES_HP_ELOG_ID_DRC_NAME 1
323#define PSERIES_HP_ELOG_ID_DRC_INDEX 2
324#define PSERIES_HP_ELOG_ID_DRC_COUNT 3
325
326struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log,
327 uint16_t section_id);
328
329/*
330 * This can be set by the rtas_flash module so that it can get called
331 * as the absolutely last thing before the kernel terminates.
332 */
333extern void (*rtas_flash_term_hook)(int);
334
335extern struct rtas_t rtas;
336
337extern int rtas_token(const char *service);
338extern int rtas_service_present(const char *service);
339extern int rtas_call(int token, int, int, int *, ...);
340void rtas_call_unlocked(struct rtas_args *args, int token, int nargs,
341 int nret, ...);
342extern void __noreturn rtas_restart(char *cmd);
343extern void rtas_power_off(void);
344extern void __noreturn rtas_halt(void);
345extern void rtas_os_term(char *str);
346extern int rtas_get_sensor(int sensor, int index, int *state);
347extern int rtas_get_sensor_fast(int sensor, int index, int *state);
348extern int rtas_get_power_level(int powerdomain, int *level);
349extern int rtas_set_power_level(int powerdomain, int level, int *setlevel);
350extern bool rtas_indicator_present(int token, int *maxindex);
351extern int rtas_set_indicator(int indicator, int index, int new_value);
352extern int rtas_set_indicator_fast(int indicator, int index, int new_value);
353extern void rtas_progress(char *s, unsigned short hex);
354extern int rtas_suspend_cpu(struct rtas_suspend_me_data *data);
355extern int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data);
356extern int rtas_online_cpus_mask(cpumask_var_t cpus);
357extern int rtas_offline_cpus_mask(cpumask_var_t cpus);
358extern int rtas_ibm_suspend_me(u64 handle);
359
360struct rtc_time;
361extern unsigned long rtas_get_boot_time(void);
362extern void rtas_get_rtc_time(struct rtc_time *rtc_time);
363extern int rtas_set_rtc_time(struct rtc_time *rtc_time);
364
365extern unsigned int rtas_busy_delay_time(int status);
366extern unsigned int rtas_busy_delay(int status);
367
368extern int early_init_dt_scan_rtas(unsigned long node,
369 const char *uname, int depth, void *data);
370
371extern void pSeries_log_error(char *buf, unsigned int err_type, int fatal);
372
373#ifdef CONFIG_PPC_PSERIES
374extern time64_t last_rtas_event;
375extern int clobbering_unread_rtas_event(void);
376extern int pseries_devicetree_update(s32 scope);
377extern void post_mobility_fixup(void);
378#else
379static inline int clobbering_unread_rtas_event(void) { return 0; }
380#endif
381
382#ifdef CONFIG_PPC_RTAS_DAEMON
383extern void rtas_cancel_event_scan(void);
384#else
385static inline void rtas_cancel_event_scan(void) { }
386#endif
387
388/* Error types logged. */
389#define ERR_FLAG_ALREADY_LOGGED 0x0
390#define ERR_FLAG_BOOT 0x1 /* log was pulled from NVRAM on boot */
391#define ERR_TYPE_RTAS_LOG 0x2 /* from rtas event-scan */
392#define ERR_TYPE_KERNEL_PANIC 0x4 /* from die()/panic() */
393#define ERR_TYPE_KERNEL_PANIC_GZ 0x8 /* ditto, compressed */
394
395/* All the types and not flags */
396#define ERR_TYPE_MASK \
397 (ERR_TYPE_RTAS_LOG | ERR_TYPE_KERNEL_PANIC | ERR_TYPE_KERNEL_PANIC_GZ)
398
399#define RTAS_DEBUG KERN_DEBUG "RTAS: "
400
401#define RTAS_ERROR_LOG_MAX 2048
402
403/*
404 * Return the firmware-specified size of the error log buffer
405 * for all rtas calls that require an error buffer argument.
406 * This includes 'check-exception' and 'rtas-last-error'.
407 */
408extern int rtas_get_error_log_max(void);
409
410/* Event Scan Parameters */
411#define EVENT_SCAN_ALL_EVENTS 0xf0000000
412#define SURVEILLANCE_TOKEN 9000
413#define LOG_NUMBER 64 /* must be a power of two */
414#define LOG_NUMBER_MASK (LOG_NUMBER-1)
415
416/* Some RTAS ops require a data buffer and that buffer must be < 4G.
417 * Rather than having a memory allocator, just use this buffer
418 * (get the lock first), make the RTAS call. Copy the data instead
419 * of holding the buffer for long.
420 */
421
422#define RTAS_DATA_BUF_SIZE 4096
423extern spinlock_t rtas_data_buf_lock;
424extern char rtas_data_buf[RTAS_DATA_BUF_SIZE];
425
426/* RMO buffer reserved for user-space RTAS use */
427extern unsigned long rtas_rmo_buf;
428
429#define GLOBAL_INTERRUPT_QUEUE 9005
430
431/**
432 * rtas_config_addr - Format a busno, devfn and reg for RTAS.
433 * @busno: The bus number.
434 * @devfn: The device and function number as encoded by PCI_DEVFN().
435 * @reg: The register number.
436 *
437 * This function encodes the given busno, devfn and register number as
438 * required for RTAS calls that take a "config_addr" parameter.
439 * See PAPR requirement 7.3.4-1 for more info.
440 */
441static inline u32 rtas_config_addr(int busno, int devfn, int reg)
442{
443 return ((reg & 0xf00) << 20) | ((busno & 0xff) << 16) |
444 (devfn << 8) | (reg & 0xff);
445}
446
447extern void rtas_give_timebase(void);
448extern void rtas_take_timebase(void);
449
450#ifdef CONFIG_PPC_RTAS
451static inline int page_is_rtas_user_buf(unsigned long pfn)
452{
453 unsigned long paddr = (pfn << PAGE_SHIFT);
454 if (paddr >= rtas_rmo_buf && paddr < (rtas_rmo_buf + RTAS_RMOBUF_MAX))
455 return 1;
456 return 0;
457}
458
459/* Not the best place to put pSeries_coalesce_init, will be fixed when we
460 * move some of the rtas suspend-me stuff to pseries */
461extern void pSeries_coalesce_init(void);
462void rtas_initialize(void);
463#else
464static inline int page_is_rtas_user_buf(unsigned long pfn) { return 0;}
465static inline void pSeries_coalesce_init(void) { }
466static inline void rtas_initialize(void) { };
467#endif
468
469extern int call_rtas(const char *, int, int, unsigned long *, ...);
470
471#endif /* __KERNEL__ */
472#endif /* _POWERPC_RTAS_H */