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