xref: /openbmc/linux/include/xen/interface/platform.h (revision 934ef33e)
1 /* SPDX-License-Identifier: MIT */
2 /******************************************************************************
3  * platform.h
4  *
5  * Hardware platform operations. Intended for use by domain-0 kernel.
6  *
7  * Copyright (c) 2002-2006, K Fraser
8  */
9 
10 #ifndef __XEN_PUBLIC_PLATFORM_H__
11 #define __XEN_PUBLIC_PLATFORM_H__
12 
13 #include <xen/interface/xen.h>
14 
15 #define XENPF_INTERFACE_VERSION 0x03000001
16 
17 /*
18  * Set clock such that it would read <secs,nsecs> after 00:00:00 UTC,
19  * 1 January, 1970 if the current system time was <system_time>.
20  */
21 #define XENPF_settime32             17
22 struct xenpf_settime32 {
23 	/* IN variables. */
24 	uint32_t secs;
25 	uint32_t nsecs;
26 	uint64_t system_time;
27 };
28 DEFINE_GUEST_HANDLE_STRUCT(xenpf_settime32_t);
29 #define XENPF_settime64           62
30 struct xenpf_settime64 {
31     /* IN variables. */
32     uint64_t secs;
33     uint32_t nsecs;
34     uint32_t mbz;
35     uint64_t system_time;
36 };
37 DEFINE_GUEST_HANDLE_STRUCT(xenpf_settime64_t);
38 
39 /*
40  * Request memory range (@mfn, @mfn+@nr_mfns-1) to have type @type.
41  * On x86, @type is an architecture-defined MTRR memory type.
42  * On success, returns the MTRR that was used (@reg) and a handle that can
43  * be passed to XENPF_DEL_MEMTYPE to accurately tear down the new setting.
44  * (x86-specific).
45  */
46 #define XENPF_add_memtype         31
47 struct xenpf_add_memtype {
48 	/* IN variables. */
49 	xen_pfn_t mfn;
50 	uint64_t nr_mfns;
51 	uint32_t type;
52 	/* OUT variables. */
53 	uint32_t handle;
54 	uint32_t reg;
55 };
56 DEFINE_GUEST_HANDLE_STRUCT(xenpf_add_memtype_t);
57 
58 /*
59  * Tear down an existing memory-range type. If @handle is remembered then it
60  * should be passed in to accurately tear down the correct setting (in case
61  * of overlapping memory regions with differing types). If it is not known
62  * then @handle should be set to zero. In all cases @reg must be set.
63  * (x86-specific).
64  */
65 #define XENPF_del_memtype         32
66 struct xenpf_del_memtype {
67 	/* IN variables. */
68 	uint32_t handle;
69 	uint32_t reg;
70 };
71 DEFINE_GUEST_HANDLE_STRUCT(xenpf_del_memtype_t);
72 
73 /* Read current type of an MTRR (x86-specific). */
74 #define XENPF_read_memtype        33
75 struct xenpf_read_memtype {
76 	/* IN variables. */
77 	uint32_t reg;
78 	/* OUT variables. */
79 	xen_pfn_t mfn;
80 	uint64_t nr_mfns;
81 	uint32_t type;
82 };
83 DEFINE_GUEST_HANDLE_STRUCT(xenpf_read_memtype_t);
84 
85 #define XENPF_microcode_update    35
86 struct xenpf_microcode_update {
87 	/* IN variables. */
88 	GUEST_HANDLE(void) data;          /* Pointer to microcode data */
89 	uint32_t length;                  /* Length of microcode data. */
90 };
91 DEFINE_GUEST_HANDLE_STRUCT(xenpf_microcode_update_t);
92 
93 #define XENPF_platform_quirk      39
94 #define QUIRK_NOIRQBALANCING      1 /* Do not restrict IO-APIC RTE targets */
95 #define QUIRK_IOAPIC_BAD_REGSEL   2 /* IO-APIC REGSEL forgets its value    */
96 #define QUIRK_IOAPIC_GOOD_REGSEL  3 /* IO-APIC REGSEL behaves properly     */
97 struct xenpf_platform_quirk {
98 	/* IN variables. */
99 	uint32_t quirk_id;
100 };
101 DEFINE_GUEST_HANDLE_STRUCT(xenpf_platform_quirk_t);
102 
103 #define XENPF_efi_runtime_call    49
104 #define XEN_EFI_get_time                      1
105 #define XEN_EFI_set_time                      2
106 #define XEN_EFI_get_wakeup_time               3
107 #define XEN_EFI_set_wakeup_time               4
108 #define XEN_EFI_get_next_high_monotonic_count 5
109 #define XEN_EFI_get_variable                  6
110 #define XEN_EFI_set_variable                  7
111 #define XEN_EFI_get_next_variable_name        8
112 #define XEN_EFI_query_variable_info           9
113 #define XEN_EFI_query_capsule_capabilities   10
114 #define XEN_EFI_update_capsule               11
115 
116 struct xenpf_efi_runtime_call {
117 	uint32_t function;
118 	/*
119 	 * This field is generally used for per sub-function flags (defined
120 	 * below), except for the XEN_EFI_get_next_high_monotonic_count case,
121 	 * where it holds the single returned value.
122 	 */
123 	uint32_t misc;
124 	xen_ulong_t status;
125 	union {
126 #define XEN_EFI_GET_TIME_SET_CLEARS_NS 0x00000001
127 		struct {
128 			struct xenpf_efi_time {
129 				uint16_t year;
130 				uint8_t month;
131 				uint8_t day;
132 				uint8_t hour;
133 				uint8_t min;
134 				uint8_t sec;
135 				uint32_t ns;
136 				int16_t tz;
137 				uint8_t daylight;
138 			} time;
139 			uint32_t resolution;
140 			uint32_t accuracy;
141 		} get_time;
142 
143 		struct xenpf_efi_time set_time;
144 
145 #define XEN_EFI_GET_WAKEUP_TIME_ENABLED 0x00000001
146 #define XEN_EFI_GET_WAKEUP_TIME_PENDING 0x00000002
147 		struct xenpf_efi_time get_wakeup_time;
148 
149 #define XEN_EFI_SET_WAKEUP_TIME_ENABLE      0x00000001
150 #define XEN_EFI_SET_WAKEUP_TIME_ENABLE_ONLY 0x00000002
151 		struct xenpf_efi_time set_wakeup_time;
152 
153 #define XEN_EFI_VARIABLE_NON_VOLATILE       0x00000001
154 #define XEN_EFI_VARIABLE_BOOTSERVICE_ACCESS 0x00000002
155 #define XEN_EFI_VARIABLE_RUNTIME_ACCESS     0x00000004
156 		struct {
157 			GUEST_HANDLE(void) name;  /* UCS-2/UTF-16 string */
158 			xen_ulong_t size;
159 			GUEST_HANDLE(void) data;
160 			struct xenpf_efi_guid {
161 				uint32_t data1;
162 				uint16_t data2;
163 				uint16_t data3;
164 				uint8_t data4[8];
165 			} vendor_guid;
166 		} get_variable, set_variable;
167 
168 		struct {
169 			xen_ulong_t size;
170 			GUEST_HANDLE(void) name;  /* UCS-2/UTF-16 string */
171 			struct xenpf_efi_guid vendor_guid;
172 		} get_next_variable_name;
173 
174 		struct {
175 			uint32_t attr;
176 			uint64_t max_store_size;
177 			uint64_t remain_store_size;
178 			uint64_t max_size;
179 		} query_variable_info;
180 
181 		struct {
182 			GUEST_HANDLE(void) capsule_header_array;
183 			xen_ulong_t capsule_count;
184 			uint64_t max_capsule_size;
185 			uint32_t reset_type;
186 		} query_capsule_capabilities;
187 
188 		struct {
189 			GUEST_HANDLE(void) capsule_header_array;
190 			xen_ulong_t capsule_count;
191 			uint64_t sg_list; /* machine address */
192 		} update_capsule;
193 	} u;
194 };
195 DEFINE_GUEST_HANDLE_STRUCT(xenpf_efi_runtime_call);
196 
197 #define  XEN_FW_EFI_VERSION        0
198 #define  XEN_FW_EFI_CONFIG_TABLE   1
199 #define  XEN_FW_EFI_VENDOR         2
200 #define  XEN_FW_EFI_MEM_INFO       3
201 #define  XEN_FW_EFI_RT_VERSION     4
202 
203 #define XENPF_firmware_info       50
204 #define XEN_FW_DISK_INFO          1 /* from int 13 AH=08/41/48 */
205 #define XEN_FW_DISK_MBR_SIGNATURE 2 /* from MBR offset 0x1b8 */
206 #define XEN_FW_VBEDDC_INFO        3 /* from int 10 AX=4f15 */
207 #define XEN_FW_EFI_INFO           4 /* from EFI */
208 #define XEN_FW_KBD_SHIFT_FLAGS    5 /* Int16, Fn02: Get keyboard shift flags. */
209 
210 struct xenpf_firmware_info {
211 	/* IN variables. */
212 	uint32_t type;
213 	uint32_t index;
214 	/* OUT variables. */
215 	union {
216 		struct {
217 			/* Int13, Fn48: Check Extensions Present. */
218 			uint8_t device;                   /* %dl: bios device number */
219 			uint8_t version;                  /* %ah: major version      */
220 			uint16_t interface_support;       /* %cx: support bitmap     */
221 			/* Int13, Fn08: Legacy Get Device Parameters. */
222 			uint16_t legacy_max_cylinder;     /* %cl[7:6]:%ch: max cyl # */
223 			uint8_t legacy_max_head;          /* %dh: max head #         */
224 			uint8_t legacy_sectors_per_track; /* %cl[5:0]: max sector #  */
225 			/* Int13, Fn41: Get Device Parameters (as filled into %ds:%esi). */
226 			/* NB. First uint16_t of buffer must be set to buffer size.      */
227 			GUEST_HANDLE(void) edd_params;
228 		} disk_info; /* XEN_FW_DISK_INFO */
229 		struct {
230 			uint8_t device;                   /* bios device number  */
231 			uint32_t mbr_signature;           /* offset 0x1b8 in mbr */
232 		} disk_mbr_signature; /* XEN_FW_DISK_MBR_SIGNATURE */
233 		struct {
234 			/* Int10, AX=4F15: Get EDID info. */
235 			uint8_t capabilities;
236 			uint8_t edid_transfer_time;
237 			/* must refer to 128-byte buffer */
238 			GUEST_HANDLE(uchar) edid;
239 		} vbeddc_info; /* XEN_FW_VBEDDC_INFO */
240 
241 		union xenpf_efi_info {
242 			uint32_t version;
243 			struct {
244 				uint64_t addr;   /* EFI_CONFIGURATION_TABLE */
245 				uint32_t nent;
246 			} cfg;
247 			struct {
248 				uint32_t revision;
249 				uint32_t bufsz;  /* input, in bytes */
250 				GUEST_HANDLE(void) name;
251 				/* UCS-2/UTF-16 string */
252 			} vendor;
253 			struct {
254 				uint64_t addr;
255 				uint64_t size;
256 				uint64_t attr;
257 				uint32_t type;
258 			} mem;
259 		} efi_info; /* XEN_FW_EFI_INFO */
260 
261 		uint8_t kbd_shift_flags; /* XEN_FW_KBD_SHIFT_FLAGS */
262 	} u;
263 };
264 DEFINE_GUEST_HANDLE_STRUCT(xenpf_firmware_info_t);
265 
266 #define XENPF_enter_acpi_sleep    51
267 struct xenpf_enter_acpi_sleep {
268 	/* IN variables */
269 	uint16_t val_a;             /* PM1a control / sleep type A. */
270 	uint16_t val_b;             /* PM1b control / sleep type B. */
271 	uint32_t sleep_state;       /* Which state to enter (Sn). */
272 #define XENPF_ACPI_SLEEP_EXTENDED 0x00000001
273 	uint32_t flags;             /* XENPF_ACPI_SLEEP_*. */
274 };
275 DEFINE_GUEST_HANDLE_STRUCT(xenpf_enter_acpi_sleep_t);
276 
277 #define XENPF_change_freq         52
278 struct xenpf_change_freq {
279 	/* IN variables */
280 	uint32_t flags; /* Must be zero. */
281 	uint32_t cpu;   /* Physical cpu. */
282 	uint64_t freq;  /* New frequency (Hz). */
283 };
284 DEFINE_GUEST_HANDLE_STRUCT(xenpf_change_freq_t);
285 
286 /*
287  * Get idle times (nanoseconds since boot) for physical CPUs specified in the
288  * @cpumap_bitmap with range [0..@cpumap_nr_cpus-1]. The @idletime array is
289  * indexed by CPU number; only entries with the corresponding @cpumap_bitmap
290  * bit set are written to. On return, @cpumap_bitmap is modified so that any
291  * non-existent CPUs are cleared. Such CPUs have their @idletime array entry
292  * cleared.
293  */
294 #define XENPF_getidletime         53
295 struct xenpf_getidletime {
296 	/* IN/OUT variables */
297 	/* IN: CPUs to interrogate; OUT: subset of IN which are present */
298 	GUEST_HANDLE(uchar) cpumap_bitmap;
299 	/* IN variables */
300 	/* Size of cpumap bitmap. */
301 	uint32_t cpumap_nr_cpus;
302 	/* Must be indexable for every cpu in cpumap_bitmap. */
303 	GUEST_HANDLE(uint64_t) idletime;
304 	/* OUT variables */
305 	/* System time when the idletime snapshots were taken. */
306 	uint64_t now;
307 };
308 DEFINE_GUEST_HANDLE_STRUCT(xenpf_getidletime_t);
309 
310 #define XENPF_set_processor_pminfo      54
311 
312 /* ability bits */
313 #define XEN_PROCESSOR_PM_CX	1
314 #define XEN_PROCESSOR_PM_PX	2
315 #define XEN_PROCESSOR_PM_TX	4
316 
317 /* cmd type */
318 #define XEN_PM_CX   0
319 #define XEN_PM_PX   1
320 #define XEN_PM_TX   2
321 #define XEN_PM_PDC  3
322 /* Px sub info type */
323 #define XEN_PX_PCT   1
324 #define XEN_PX_PSS   2
325 #define XEN_PX_PPC   4
326 #define XEN_PX_PSD   8
327 
328 struct xen_power_register {
329 	uint32_t     space_id;
330 	uint32_t     bit_width;
331 	uint32_t     bit_offset;
332 	uint32_t     access_size;
333 	uint64_t     address;
334 };
335 
336 struct xen_processor_csd {
337 	uint32_t    domain;      /* domain number of one dependent group */
338 	uint32_t    coord_type;  /* coordination type */
339 	uint32_t    num;         /* number of processors in same domain */
340 };
341 DEFINE_GUEST_HANDLE_STRUCT(xen_processor_csd);
342 
343 struct xen_processor_cx {
344 	struct xen_power_register  reg; /* GAS for Cx trigger register */
345 	uint8_t     type;     /* cstate value, c0: 0, c1: 1, ... */
346 	uint32_t    latency;  /* worst latency (ms) to enter/exit this cstate */
347 	uint32_t    power;    /* average power consumption(mW) */
348 	uint32_t    dpcnt;    /* number of dependency entries */
349 	GUEST_HANDLE(xen_processor_csd) dp; /* NULL if no dependency */
350 };
351 DEFINE_GUEST_HANDLE_STRUCT(xen_processor_cx);
352 
353 struct xen_processor_flags {
354 	uint32_t bm_control:1;
355 	uint32_t bm_check:1;
356 	uint32_t has_cst:1;
357 	uint32_t power_setup_done:1;
358 	uint32_t bm_rld_set:1;
359 };
360 
361 struct xen_processor_power {
362 	uint32_t count;  /* number of C state entries in array below */
363 	struct xen_processor_flags flags;  /* global flags of this processor */
364 	GUEST_HANDLE(xen_processor_cx) states; /* supported c states */
365 };
366 
367 struct xen_pct_register {
368 	uint8_t  descriptor;
369 	uint16_t length;
370 	uint8_t  space_id;
371 	uint8_t  bit_width;
372 	uint8_t  bit_offset;
373 	uint8_t  reserved;
374 	uint64_t address;
375 };
376 
377 struct xen_processor_px {
378 	uint64_t core_frequency; /* megahertz */
379 	uint64_t power;      /* milliWatts */
380 	uint64_t transition_latency; /* microseconds */
381 	uint64_t bus_master_latency; /* microseconds */
382 	uint64_t control;        /* control value */
383 	uint64_t status;     /* success indicator */
384 };
385 DEFINE_GUEST_HANDLE_STRUCT(xen_processor_px);
386 
387 struct xen_psd_package {
388 	uint64_t num_entries;
389 	uint64_t revision;
390 	uint64_t domain;
391 	uint64_t coord_type;
392 	uint64_t num_processors;
393 };
394 
395 struct xen_processor_performance {
396 	uint32_t flags;     /* flag for Px sub info type */
397 	uint32_t platform_limit;  /* Platform limitation on freq usage */
398 	struct xen_pct_register control_register;
399 	struct xen_pct_register status_register;
400 	uint32_t state_count;     /* total available performance states */
401 	GUEST_HANDLE(xen_processor_px) states;
402 	struct xen_psd_package domain_info;
403 	uint32_t shared_type;     /* coordination type of this processor */
404 };
405 DEFINE_GUEST_HANDLE_STRUCT(xen_processor_performance);
406 
407 struct xenpf_set_processor_pminfo {
408 	/* IN variables */
409 	uint32_t id;    /* ACPI CPU ID */
410 	uint32_t type;  /* {XEN_PM_CX, XEN_PM_PX} */
411 	union {
412 		struct xen_processor_power          power;/* Cx: _CST/_CSD */
413 		struct xen_processor_performance    perf; /* Px: _PPC/_PCT/_PSS/_PSD */
414 		GUEST_HANDLE(uint32_t)              pdc;
415 	};
416 };
417 DEFINE_GUEST_HANDLE_STRUCT(xenpf_set_processor_pminfo);
418 
419 #define XENPF_get_cpuinfo 55
420 struct xenpf_pcpuinfo {
421 	/* IN */
422 	uint32_t xen_cpuid;
423 	/* OUT */
424 	/* The maxium cpu_id that is present */
425 	uint32_t max_present;
426 #define XEN_PCPU_FLAGS_ONLINE   1
427 	/* Correponding xen_cpuid is not present*/
428 #define XEN_PCPU_FLAGS_INVALID  2
429 	uint32_t flags;
430 	uint32_t apic_id;
431 	uint32_t acpi_id;
432 };
433 DEFINE_GUEST_HANDLE_STRUCT(xenpf_pcpuinfo);
434 
435 #define XENPF_cpu_online	56
436 #define XENPF_cpu_offline	57
437 struct xenpf_cpu_ol {
438 	uint32_t cpuid;
439 };
440 DEFINE_GUEST_HANDLE_STRUCT(xenpf_cpu_ol);
441 
442 #define XENPF_cpu_hotadd	58
443 struct xenpf_cpu_hotadd {
444 	uint32_t apic_id;
445 	uint32_t acpi_id;
446 	uint32_t pxm;
447 };
448 
449 #define XENPF_mem_hotadd	59
450 struct xenpf_mem_hotadd {
451 	uint64_t spfn;
452 	uint64_t epfn;
453 	uint32_t pxm;
454 	uint32_t flags;
455 };
456 
457 #define XENPF_core_parking     60
458 struct xenpf_core_parking {
459 	/* IN variables */
460 #define XEN_CORE_PARKING_SET   1
461 #define XEN_CORE_PARKING_GET   2
462 	uint32_t type;
463 	/* IN variables:  set cpu nums expected to be idled */
464 	/* OUT variables: get cpu nums actually be idled */
465 	uint32_t idle_nums;
466 };
467 DEFINE_GUEST_HANDLE_STRUCT(xenpf_core_parking);
468 
469 #define XENPF_get_symbol      63
470 struct xenpf_symdata {
471 	/* IN/OUT variables */
472 	uint32_t	namelen; /* size of 'name' buffer */
473 
474 	/* IN/OUT variables */
475 	uint32_t	symnum; /* IN:  Symbol to read                       */
476 				/* OUT: Next available symbol. If same as IN */
477 				/* then  we reached the end                  */
478 
479 	/* OUT variables */
480 	GUEST_HANDLE(char) name;
481 	uint64_t	address;
482 	char            type;
483 };
484 DEFINE_GUEST_HANDLE_STRUCT(xenpf_symdata);
485 
486 #define XENPF_get_dom0_console 64
487 
488 struct xen_platform_op {
489 	uint32_t cmd;
490 	uint32_t interface_version; /* XENPF_INTERFACE_VERSION */
491 	union {
492 		struct xenpf_settime32         settime32;
493 		struct xenpf_settime64         settime64;
494 		struct xenpf_add_memtype       add_memtype;
495 		struct xenpf_del_memtype       del_memtype;
496 		struct xenpf_read_memtype      read_memtype;
497 		struct xenpf_microcode_update  microcode;
498 		struct xenpf_platform_quirk    platform_quirk;
499 		struct xenpf_efi_runtime_call  efi_runtime_call;
500 		struct xenpf_firmware_info     firmware_info;
501 		struct xenpf_enter_acpi_sleep  enter_acpi_sleep;
502 		struct xenpf_change_freq       change_freq;
503 		struct xenpf_getidletime       getidletime;
504 		struct xenpf_set_processor_pminfo set_pminfo;
505 		struct xenpf_pcpuinfo          pcpu_info;
506 		struct xenpf_cpu_ol            cpu_ol;
507 		struct xenpf_cpu_hotadd        cpu_add;
508 		struct xenpf_mem_hotadd        mem_add;
509 		struct xenpf_core_parking      core_parking;
510 		struct xenpf_symdata           symdata;
511 		struct dom0_vga_console_info   dom0_console;
512 		uint8_t                        pad[128];
513 	} u;
514 };
515 DEFINE_GUEST_HANDLE_STRUCT(xen_platform_op_t);
516 
517 #endif /* __XEN_PUBLIC_PLATFORM_H__ */
518