ia64/xen-unstable

view xen/include/asm-ia64/linux-xen/linux/efi.h @ 19848:5839491bbf20

[IA64] replace MAX_VCPUS with d->max_vcpus where necessary.

don't use MAX_VCPUS, and use vcpu::max_vcpus.
The changeset of 2f9e1348aa98 introduced max_vcpus to allow more vcpus
per guest. This patch is ia64 counter part.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author Isaku Yamahata <yamahata@valinux.co.jp>
date Mon Jun 29 11:26:05 2009 +0900 (2009-06-29)
parents 4e22d660ece3
children
line source
1 #ifndef _LINUX_EFI_H
2 #define _LINUX_EFI_H
4 #ifndef __ASSEMBLY__
6 /*
7 * Extensible Firmware Interface
8 * Based on 'Extensible Firmware Interface Specification' version 0.9, April 30, 1999
9 *
10 * Copyright (C) 1999 VA Linux Systems
11 * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
12 * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co.
13 * David Mosberger-Tang <davidm@hpl.hp.com>
14 * Stephane Eranian <eranian@hpl.hp.com>
15 */
16 #include <linux/init.h>
17 #include <linux/string.h>
18 #include <linux/time.h>
19 #include <linux/types.h>
20 #include <linux/proc_fs.h>
21 #include <linux/rtc.h>
22 #include <linux/ioport.h>
24 #include <asm/page.h>
25 #include <asm/system.h>
26 #ifdef XEN
27 #include <asm/pgtable.h>
28 #endif
30 #define EFI_SUCCESS 0
31 #define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1)))
32 #define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1)))
33 #define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1)))
34 #define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1)))
35 #define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1)))
36 #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1)))
38 typedef unsigned long efi_status_t;
39 typedef u8 efi_bool_t;
40 typedef u16 efi_char16_t; /* UNICODE character */
43 typedef struct {
44 u8 b[16];
45 } efi_guid_t;
47 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
48 ((efi_guid_t) \
49 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
50 (b) & 0xff, ((b) >> 8) & 0xff, \
51 (c) & 0xff, ((c) >> 8) & 0xff, \
52 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
54 /*
55 * Generic EFI table header
56 */
57 typedef struct {
58 u64 signature;
59 u32 revision;
60 u32 headersize;
61 u32 crc32;
62 u32 reserved;
63 } efi_table_hdr_t;
65 /*
66 * Memory map descriptor:
67 */
69 /* Memory types: */
70 #define EFI_RESERVED_TYPE 0
71 #define EFI_LOADER_CODE 1
72 #define EFI_LOADER_DATA 2
73 #define EFI_BOOT_SERVICES_CODE 3
74 #define EFI_BOOT_SERVICES_DATA 4
75 #define EFI_RUNTIME_SERVICES_CODE 5
76 #define EFI_RUNTIME_SERVICES_DATA 6
77 #define EFI_CONVENTIONAL_MEMORY 7
78 #define EFI_UNUSABLE_MEMORY 8
79 #define EFI_ACPI_RECLAIM_MEMORY 9
80 #define EFI_ACPI_MEMORY_NVS 10
81 #define EFI_MEMORY_MAPPED_IO 11
82 #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12
83 #define EFI_PAL_CODE 13
84 #define EFI_MAX_MEMORY_TYPE 14
86 /* Attribute values: */
87 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */
88 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */
89 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */
90 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */
91 #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */
92 #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
93 #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */
94 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */
95 #define EFI_MEMORY_DESCRIPTOR_VERSION 1
97 #define EFI_PAGE_SHIFT 12
99 typedef struct {
100 u32 type;
101 u32 pad;
102 u64 phys_addr;
103 u64 virt_addr;
104 u64 num_pages;
105 u64 attribute;
106 } efi_memory_desc_t;
108 typedef int (*efi_freemem_callback_t) (unsigned long start, unsigned long end, void *arg);
110 /*
111 * Types and defines for Time Services
112 */
113 #define EFI_TIME_ADJUST_DAYLIGHT 0x1
114 #define EFI_TIME_IN_DAYLIGHT 0x2
115 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff
117 typedef struct {
118 u16 year;
119 u8 month;
120 u8 day;
121 u8 hour;
122 u8 minute;
123 u8 second;
124 u8 pad1;
125 u32 nanosecond;
126 s16 timezone;
127 u8 daylight;
128 u8 pad2;
129 } efi_time_t;
131 typedef struct {
132 u32 resolution;
133 u32 accuracy;
134 u8 sets_to_zero;
135 } efi_time_cap_t;
137 /*
138 * Types and defines for EFI ResetSystem
139 */
140 #define EFI_RESET_COLD 0
141 #define EFI_RESET_WARM 1
142 #define EFI_RESET_SHUTDOWN 2
144 /*
145 * EFI Runtime Services table
146 */
147 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
148 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000
150 typedef struct {
151 efi_table_hdr_t hdr;
152 unsigned long get_time;
153 unsigned long set_time;
154 unsigned long get_wakeup_time;
155 unsigned long set_wakeup_time;
156 unsigned long set_virtual_address_map;
157 unsigned long convert_pointer;
158 unsigned long get_variable;
159 unsigned long get_next_variable;
160 unsigned long set_variable;
161 unsigned long get_next_high_mono_count;
162 unsigned long reset_system;
163 } efi_runtime_services_t;
165 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc);
166 typedef efi_status_t efi_set_time_t (efi_time_t *tm);
167 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending,
168 efi_time_t *tm);
169 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm);
170 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr,
171 unsigned long *data_size, void *data);
172 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name,
173 efi_guid_t *vendor);
174 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor,
175 unsigned long attr, unsigned long data_size,
176 void *data);
177 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count);
178 typedef void efi_reset_system_t (int reset_type, efi_status_t status,
179 unsigned long data_size, efi_char16_t *data);
180 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size,
181 unsigned long descriptor_size,
182 u32 descriptor_version,
183 efi_memory_desc_t *virtual_map);
185 /*
186 * EFI Configuration Table and GUID definitions
187 */
188 #define NULL_GUID \
189 EFI_GUID( 0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 )
191 #define MPS_TABLE_GUID \
192 EFI_GUID( 0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
194 #define ACPI_TABLE_GUID \
195 EFI_GUID( 0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
197 #define ACPI_20_TABLE_GUID \
198 EFI_GUID( 0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 )
200 #define SMBIOS_TABLE_GUID \
201 EFI_GUID( 0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
203 #define SAL_SYSTEM_TABLE_GUID \
204 EFI_GUID( 0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
206 #define HCDP_TABLE_GUID \
207 EFI_GUID( 0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 )
209 #define UGA_IO_PROTOCOL_GUID \
210 EFI_GUID( 0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 )
212 #define EFI_GLOBAL_VARIABLE_GUID \
213 EFI_GUID( 0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c )
215 typedef struct {
216 efi_guid_t guid;
217 unsigned long table;
218 } efi_config_table_t;
220 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
222 typedef struct {
223 efi_table_hdr_t hdr;
224 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */
225 u32 fw_revision;
226 unsigned long con_in_handle;
227 unsigned long con_in;
228 unsigned long con_out_handle;
229 unsigned long con_out;
230 unsigned long stderr_handle;
231 unsigned long stderr;
232 efi_runtime_services_t *runtime;
233 unsigned long boottime;
234 unsigned long nr_tables;
235 unsigned long tables;
236 } efi_system_table_t;
238 struct efi_memory_map {
239 #ifndef XEN
240 void *phys_map;
241 void *map;
242 #else
243 efi_memory_desc_t *phys_map;
244 efi_memory_desc_t *map;
245 #endif
246 void *map_end;
247 int nr_map;
248 unsigned long desc_version;
249 unsigned long desc_size;
250 };
252 #define EFI_INVALID_TABLE_ADDR (~0UL)
254 /*
255 * All runtime access to EFI goes through this structure:
256 */
257 extern struct efi {
258 efi_system_table_t *systab; /* EFI system table */
259 unsigned long mps; /* MPS table */
260 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */
261 unsigned long acpi20; /* ACPI table (ACPI 2.0) */
262 unsigned long smbios; /* SM BIOS table */
263 unsigned long sal_systab; /* SAL system table */
264 unsigned long boot_info; /* boot info table */
265 unsigned long hcdp; /* HCDP table */
266 unsigned long uga; /* UGA table */
267 efi_get_time_t *get_time;
268 efi_set_time_t *set_time;
269 efi_get_wakeup_time_t *get_wakeup_time;
270 efi_set_wakeup_time_t *set_wakeup_time;
271 efi_get_variable_t *get_variable;
272 efi_get_next_variable_t *get_next_variable;
273 efi_set_variable_t *set_variable;
274 efi_get_next_high_mono_count_t *get_next_high_mono_count;
275 efi_reset_system_t *reset_system;
276 efi_set_virtual_address_map_t *set_virtual_address_map;
277 } efi;
279 static inline int
280 efi_guidcmp (efi_guid_t left, efi_guid_t right)
281 {
282 return memcmp(&left, &right, sizeof (efi_guid_t));
283 }
285 static inline char *
286 efi_guid_unparse(efi_guid_t *guid, char *out)
287 {
288 #ifndef XEN
289 sprintf(out, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
290 #else
291 snprintf(out, 37, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
292 #endif
293 guid->b[3], guid->b[2], guid->b[1], guid->b[0],
294 guid->b[5], guid->b[4], guid->b[7], guid->b[6],
295 guid->b[8], guid->b[9], guid->b[10], guid->b[11],
296 guid->b[12], guid->b[13], guid->b[14], guid->b[15]);
297 return out;
298 }
300 extern void efi_init (void);
301 extern void *efi_get_pal_addr (void);
302 extern void efi_map_pal_code (void);
303 #ifdef XEN
304 extern void efi_unmap_pal_code (void);
305 #endif
306 extern void efi_map_memmap(void);
307 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
308 extern void efi_gettimeofday (struct timespec *ts);
309 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */
310 extern u64 efi_get_iobase (void);
311 extern u32 efi_mem_type (unsigned long phys_addr);
312 extern u64 efi_mem_attributes (unsigned long phys_addr);
313 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
314 extern int efi_mem_attribute_range (unsigned long phys_addr, unsigned long size,
315 u64 attr);
316 extern int __init efi_uart_console_only (void);
317 extern void efi_initialize_iomem_resources(struct resource *code_resource,
318 struct resource *data_resource);
319 extern unsigned long efi_get_time(void);
320 extern int efi_set_rtc_mmss(unsigned long nowtime);
321 extern int is_available_memory(efi_memory_desc_t * md);
322 extern struct efi_memory_map memmap;
324 /**
325 * efi_range_is_wc - check the WC bit on an address range
326 * @start: starting kvirt address
327 * @len: length of range
328 *
329 * Consult the EFI memory map and make sure it's ok to set this range WC.
330 * Returns true or false.
331 */
332 static inline int efi_range_is_wc(unsigned long start, unsigned long len)
333 {
334 unsigned long i;
336 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) {
337 unsigned long paddr = __pa(start + i);
338 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC))
339 return 0;
340 }
341 /* The range checked out */
342 return 1;
343 }
345 #ifdef CONFIG_EFI_PCDP
346 extern int __init efi_setup_pcdp_console(char *);
347 #endif
349 /*
350 * We play games with efi_enabled so that the compiler will, if possible, remove
351 * EFI-related code altogether.
352 */
353 #ifdef CONFIG_EFI
354 # ifdef CONFIG_X86
355 extern int efi_enabled;
356 # else
357 # define efi_enabled 1
358 # endif
359 #else
360 # define efi_enabled 0
361 #endif
363 /*
364 * Variable Attributes
365 */
366 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
367 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
368 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
370 /*
371 * EFI Device Path information
372 */
373 #define EFI_DEV_HW 0x01
374 #define EFI_DEV_PCI 1
375 #define EFI_DEV_PCCARD 2
376 #define EFI_DEV_MEM_MAPPED 3
377 #define EFI_DEV_VENDOR 4
378 #define EFI_DEV_CONTROLLER 5
379 #define EFI_DEV_ACPI 0x02
380 #define EFI_DEV_BASIC_ACPI 1
381 #define EFI_DEV_EXPANDED_ACPI 2
382 #define EFI_DEV_MSG 0x03
383 #define EFI_DEV_MSG_ATAPI 1
384 #define EFI_DEV_MSG_SCSI 2
385 #define EFI_DEV_MSG_FC 3
386 #define EFI_DEV_MSG_1394 4
387 #define EFI_DEV_MSG_USB 5
388 #define EFI_DEV_MSG_USB_CLASS 15
389 #define EFI_DEV_MSG_I20 6
390 #define EFI_DEV_MSG_MAC 11
391 #define EFI_DEV_MSG_IPV4 12
392 #define EFI_DEV_MSG_IPV6 13
393 #define EFI_DEV_MSG_INFINIBAND 9
394 #define EFI_DEV_MSG_UART 14
395 #define EFI_DEV_MSG_VENDOR 10
396 #define EFI_DEV_MEDIA 0x04
397 #define EFI_DEV_MEDIA_HARD_DRIVE 1
398 #define EFI_DEV_MEDIA_CDROM 2
399 #define EFI_DEV_MEDIA_VENDOR 3
400 #define EFI_DEV_MEDIA_FILE 4
401 #define EFI_DEV_MEDIA_PROTOCOL 5
402 #define EFI_DEV_BIOS_BOOT 0x05
403 #define EFI_DEV_END_PATH 0x7F
404 #define EFI_DEV_END_PATH2 0xFF
405 #define EFI_DEV_END_INSTANCE 0x01
406 #define EFI_DEV_END_ENTIRE 0xFF
408 struct efi_generic_dev_path {
409 u8 type;
410 u8 sub_type;
411 u16 length;
412 } __attribute ((packed));
414 #ifdef XEN
415 /*
416 * According to xen/arch/ia64/xen/regionreg.c the RID space is broken up
417 * into large-blocks. Each block belongs to a domain, except 0th block,
418 * which is broken up into small-blocks. The small-blocks are used for
419 * metaphysical mappings, again one per domain, except for the 0th
420 * small-block which is unused other than very early on in the
421 * hypervisor boot.
422 *
423 * By default each large-block is 18 bits wide, which is also the minimum
424 * allowed width for a block. Each small-block is by default 1/64 the width
425 * of a large-block, which is the maximum division allowed. In other words
426 * each small-block is at least 12 bits wide.
427 *
428 * The portion of the 0th small-block that is used early on during
429 * the hypervisor boot relates to IA64_REGION_ID_KERNEL, which is
430 * used to form an RID using the following scheme which seems to be
431 * have been inherited from Linux:
432 *
433 * a: bits 0-2: Region Number (0-7)
434 * b: 3-N: IA64_REGION_ID_KERNEL (0)
435 * c: N-23: reserved (0)
436 *
437 * N is defined by the platform.
438 *
439 * For EFI we use the following RID:
440 *
441 * a: bits 0-2: Region Number (0-7)
442 * e: bits 3-N: IA64_REGION_ID_KERNEL (1)
443 * f: bits N-53: reserved (0)
444 *
445 * + Only 6 and 7 are used as we only need two RIDs. Its not really important
446 * what this number is, so long as its between 0 and 7.
447 *
448 * The nice thing about this is that we are only using 4 bits of RID
449 * space, so it shouldn't have any chance of running into an adjacent
450 * small-block since small-blocks are at least 12 bits wide.
451 *
452 * It would actually be possible to just use a IA64_REGION_ID_KERNEL
453 * based RID for EFI use. The important thing is that it is in the 0th
454 * small block, and thus not available to domains. But as we have
455 * lots of space, its seems to be nice and clean to just use a separate
456 * RID for EFI.
457 *
458 * This can be trivially changed by updating the definition of XEN_EFI_RR.
459 *
460 * For reference, the RID is used to produce the value inserted
461 * in to a region register in the following way:
462 *
463 * A: bit 0: VHPT (0 = off, 1 = on)
464 * B: bit 1: reserved (0)
465 * C: bits 2-7: log 2 page_size
466 * D: bits 8-N: RID
467 * E: bits N-53: reserved (0)
468 */
470 /* rr7 (and rr6) may already be set to XEN_EFI_RR7 (and XEN_EFI_RR6), which
471 * would indicate a nested EFI, SAL or PAL call, such
472 * as from an MCA. This may have occurred during a call
473 * to set_one_rr_efi(). To be safe, repin everything anyway.
474 */
476 #define XEN_EFI_RR_ENTER(rr6, rr7) do { \
477 rr6 = ia64_get_rr(6UL << 61); \
478 rr7 = ia64_get_rr(7UL << 61); \
479 set_one_rr_efi(6UL << 61, XEN_EFI_RR6); \
480 set_one_rr_efi(7UL << 61, XEN_EFI_RR7); \
481 efi_map_pal_code(); \
482 } while (0)
484 /* There is no need to do anything if the saved rr7 (and rr6)
485 * is XEN_EFI_RR, as it would just switch them from XEN_EFI_RR to XEN_EFI_RR
486 * Furthermore, if this is a nested call it is important not
487 * to unpin efi_unmap_pal_code() until the outermost call is finished
488 */
490 #define XEN_EFI_RR_LEAVE(rr6, rr7) do { \
491 if (rr7 != XEN_EFI_RR7) { \
492 efi_unmap_pal_code(); \
493 set_one_rr_efi_restore(6UL << 61, rr6); \
494 set_one_rr_efi_restore(7UL << 61, rr7); \
495 } \
496 } while (0)
498 #else
499 /* Just use rr6 and rr7 in a dummy fashion here to get
500 * rid of compiler warnings - a better solution should
501 * be found if this code is ever actually used */
502 #define XEN_EFI_RR_ENTER(rr6, rr7) do { rr6 = 0; rr7 = 0; } while (0)
503 #define XEN_EFI_RR_LEAVE(rr6, rr7) do {} while (0)
504 #endif /* XEN */
506 #define XEN_EFI_RR_DECLARE(rr6, rr7) unsigned long rr6, rr7;
508 #endif /* !__ASSEMBLY__ */
510 #ifdef XEN
511 #include <asm/mmu_context.h> /* For IA64_REGION_ID_EFI and ia64_rid() */
512 #include <asm/pgtable.h> /* IA64_GRANULE_SHIFT */
514 /* macro version of vmMangleRID() */
515 #define XEN_EFI_VM_MANGLE_RRVAL(rrval) \
516 ((((rrval) & 0xff000000) >> 16) | \
517 ((rrval) & 0x00ff0000) | \
518 (((rrval) & 0x0000ff00) << 16 ) | \
519 ((rrval) & 0x000000ff))
521 #define XEN_EFI_REGION6 __IA64_UL_CONST(6)
522 #define XEN_EFI_REGION7 __IA64_UL_CONST(7)
523 #define _XEN_EFI_RR6 ((ia64_rid(XEN_IA64_REGION_ID_EFI, \
524 XEN_EFI_REGION6) << 8) | \
525 (IA64_GRANULE_SHIFT << 2))
526 #define _XEN_EFI_RR7 ((ia64_rid(XEN_IA64_REGION_ID_EFI, \
527 XEN_EFI_REGION7) << 8) | \
528 (IA64_GRANULE_SHIFT << 2))
529 #define XEN_EFI_RR6 XEN_EFI_VM_MANGLE_RRVAL(_XEN_EFI_RR6)
530 #define XEN_EFI_RR7 XEN_EFI_VM_MANGLE_RRVAL(_XEN_EFI_RR7)
532 #endif /* XEN */
534 #endif /* _LINUX_EFI_H */