1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) 2021 ARM Ltd.
4 */
5
6 #ifndef _LINUX_ARM_FFA_H
7 #define _LINUX_ARM_FFA_H
8
9 #include <linux/bitfield.h>
10 #include <linux/device.h>
11 #include <linux/module.h>
12 #include <linux/types.h>
13 #include <linux/uuid.h>
14
15 #define FFA_SMC(calling_convention, func_num) \
16 ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, (calling_convention), \
17 ARM_SMCCC_OWNER_STANDARD, (func_num))
18
19 #define FFA_SMC_32(func_num) FFA_SMC(ARM_SMCCC_SMC_32, (func_num))
20 #define FFA_SMC_64(func_num) FFA_SMC(ARM_SMCCC_SMC_64, (func_num))
21
22 #define FFA_ERROR FFA_SMC_32(0x60)
23 #define FFA_SUCCESS FFA_SMC_32(0x61)
24 #define FFA_FN64_SUCCESS FFA_SMC_64(0x61)
25 #define FFA_INTERRUPT FFA_SMC_32(0x62)
26 #define FFA_VERSION FFA_SMC_32(0x63)
27 #define FFA_FEATURES FFA_SMC_32(0x64)
28 #define FFA_RX_RELEASE FFA_SMC_32(0x65)
29 #define FFA_RXTX_MAP FFA_SMC_32(0x66)
30 #define FFA_FN64_RXTX_MAP FFA_SMC_64(0x66)
31 #define FFA_RXTX_UNMAP FFA_SMC_32(0x67)
32 #define FFA_PARTITION_INFO_GET FFA_SMC_32(0x68)
33 #define FFA_ID_GET FFA_SMC_32(0x69)
34 #define FFA_MSG_POLL FFA_SMC_32(0x6A)
35 #define FFA_MSG_WAIT FFA_SMC_32(0x6B)
36 #define FFA_YIELD FFA_SMC_32(0x6C)
37 #define FFA_RUN FFA_SMC_32(0x6D)
38 #define FFA_MSG_SEND FFA_SMC_32(0x6E)
39 #define FFA_MSG_SEND_DIRECT_REQ FFA_SMC_32(0x6F)
40 #define FFA_FN64_MSG_SEND_DIRECT_REQ FFA_SMC_64(0x6F)
41 #define FFA_MSG_SEND_DIRECT_RESP FFA_SMC_32(0x70)
42 #define FFA_FN64_MSG_SEND_DIRECT_RESP FFA_SMC_64(0x70)
43 #define FFA_MEM_DONATE FFA_SMC_32(0x71)
44 #define FFA_FN64_MEM_DONATE FFA_SMC_64(0x71)
45 #define FFA_MEM_LEND FFA_SMC_32(0x72)
46 #define FFA_FN64_MEM_LEND FFA_SMC_64(0x72)
47 #define FFA_MEM_SHARE FFA_SMC_32(0x73)
48 #define FFA_FN64_MEM_SHARE FFA_SMC_64(0x73)
49 #define FFA_MEM_RETRIEVE_REQ FFA_SMC_32(0x74)
50 #define FFA_FN64_MEM_RETRIEVE_REQ FFA_SMC_64(0x74)
51 #define FFA_MEM_RETRIEVE_RESP FFA_SMC_32(0x75)
52 #define FFA_MEM_RELINQUISH FFA_SMC_32(0x76)
53 #define FFA_MEM_RECLAIM FFA_SMC_32(0x77)
54 #define FFA_MEM_OP_PAUSE FFA_SMC_32(0x78)
55 #define FFA_MEM_OP_RESUME FFA_SMC_32(0x79)
56 #define FFA_MEM_FRAG_RX FFA_SMC_32(0x7A)
57 #define FFA_MEM_FRAG_TX FFA_SMC_32(0x7B)
58 #define FFA_NORMAL_WORLD_RESUME FFA_SMC_32(0x7C)
59 #define FFA_NOTIFICATION_BITMAP_CREATE FFA_SMC_32(0x7D)
60 #define FFA_NOTIFICATION_BITMAP_DESTROY FFA_SMC_32(0x7E)
61 #define FFA_NOTIFICATION_BIND FFA_SMC_32(0x7F)
62 #define FFA_NOTIFICATION_UNBIND FFA_SMC_32(0x80)
63 #define FFA_NOTIFICATION_SET FFA_SMC_32(0x81)
64 #define FFA_NOTIFICATION_GET FFA_SMC_32(0x82)
65 #define FFA_NOTIFICATION_INFO_GET FFA_SMC_32(0x83)
66 #define FFA_FN64_NOTIFICATION_INFO_GET FFA_SMC_64(0x83)
67 #define FFA_RX_ACQUIRE FFA_SMC_32(0x84)
68 #define FFA_SPM_ID_GET FFA_SMC_32(0x85)
69 #define FFA_MSG_SEND2 FFA_SMC_32(0x86)
70 #define FFA_SECONDARY_EP_REGISTER FFA_SMC_32(0x87)
71 #define FFA_FN64_SECONDARY_EP_REGISTER FFA_SMC_64(0x87)
72 #define FFA_MEM_PERM_GET FFA_SMC_32(0x88)
73 #define FFA_FN64_MEM_PERM_GET FFA_SMC_64(0x88)
74 #define FFA_MEM_PERM_SET FFA_SMC_32(0x89)
75 #define FFA_FN64_MEM_PERM_SET FFA_SMC_64(0x89)
76 #define FFA_CONSOLE_LOG FFA_SMC_32(0x8A)
77 #define FFA_PARTITION_INFO_GET_REGS FFA_SMC_64(0x8B)
78 #define FFA_EL3_INTR_HANDLE FFA_SMC_32(0x8C)
79 #define FFA_MSG_SEND_DIRECT_REQ2 FFA_SMC_64(0x8D)
80 #define FFA_MSG_SEND_DIRECT_RESP2 FFA_SMC_64(0x8E)
81
82 /*
83 * For some calls it is necessary to use SMC64 to pass or return 64-bit values.
84 * For such calls FFA_FN_NATIVE(name) will choose the appropriate
85 * (native-width) function ID.
86 */
87 #ifdef CONFIG_64BIT
88 #define FFA_FN_NATIVE(name) FFA_FN64_##name
89 #else
90 #define FFA_FN_NATIVE(name) FFA_##name
91 #endif
92
93 /* FFA error codes. */
94 #define FFA_RET_SUCCESS (0)
95 #define FFA_RET_NOT_SUPPORTED (-1)
96 #define FFA_RET_INVALID_PARAMETERS (-2)
97 #define FFA_RET_NO_MEMORY (-3)
98 #define FFA_RET_BUSY (-4)
99 #define FFA_RET_INTERRUPTED (-5)
100 #define FFA_RET_DENIED (-6)
101 #define FFA_RET_RETRY (-7)
102 #define FFA_RET_ABORTED (-8)
103 #define FFA_RET_NO_DATA (-9)
104
105 /* FFA version encoding */
106 #define FFA_MAJOR_VERSION_MASK GENMASK(30, 16)
107 #define FFA_MINOR_VERSION_MASK GENMASK(15, 0)
108 #define FFA_MAJOR_VERSION(x) ((u16)(FIELD_GET(FFA_MAJOR_VERSION_MASK, (x))))
109 #define FFA_MINOR_VERSION(x) ((u16)(FIELD_GET(FFA_MINOR_VERSION_MASK, (x))))
110 #define FFA_PACK_VERSION_INFO(major, minor) \
111 (FIELD_PREP(FFA_MAJOR_VERSION_MASK, (major)) | \
112 FIELD_PREP(FFA_MINOR_VERSION_MASK, (minor)))
113 #define FFA_VERSION_1_0 FFA_PACK_VERSION_INFO(1, 0)
114 #define FFA_VERSION_1_1 FFA_PACK_VERSION_INFO(1, 1)
115 #define FFA_VERSION_1_2 FFA_PACK_VERSION_INFO(1, 2)
116
117 /**
118 * FF-A specification mentions explicitly about '4K pages'. This should
119 * not be confused with the kernel PAGE_SIZE, which is the translation
120 * granule kernel is configured and may be one among 4K, 16K and 64K.
121 */
122 #define FFA_PAGE_SIZE SZ_4K
123
124 /*
125 * Minimum buffer size/alignment encodings returned by an FFA_FEATURES
126 * query for FFA_RXTX_MAP.
127 */
128 #define FFA_FEAT_RXTX_MIN_SZ_4K 0
129 #define FFA_FEAT_RXTX_MIN_SZ_64K 1
130 #define FFA_FEAT_RXTX_MIN_SZ_16K 2
131 #define FFA_FEAT_RXTX_MIN_SZ_MASK GENMASK(1, 0)
132
133 /* FFA Bus/Device/Driver related */
134 struct ffa_device {
135 u32 id;
136 u32 properties;
137 int vm_id;
138 bool mode_32bit;
139 uuid_t uuid;
140 struct device dev;
141 const struct ffa_ops *ops;
142 };
143
144 #define to_ffa_dev(d) container_of(d, struct ffa_device, dev)
145
146 struct ffa_device_id {
147 uuid_t uuid;
148 };
149
150 struct ffa_driver {
151 const char *name;
152 int (*probe)(struct ffa_device *sdev);
153 void (*remove)(struct ffa_device *sdev);
154 const struct ffa_device_id *id_table;
155
156 struct device_driver driver;
157 };
158
159 #define to_ffa_driver(d) container_of_const(d, struct ffa_driver, driver)
160
ffa_dev_set_drvdata(struct ffa_device * fdev,void * data)161 static inline void ffa_dev_set_drvdata(struct ffa_device *fdev, void *data)
162 {
163 dev_set_drvdata(&fdev->dev, data);
164 }
165
ffa_dev_get_drvdata(struct ffa_device * fdev)166 static inline void *ffa_dev_get_drvdata(struct ffa_device *fdev)
167 {
168 return dev_get_drvdata(&fdev->dev);
169 }
170
171 struct ffa_partition_info;
172
173 #if IS_REACHABLE(CONFIG_ARM_FFA_TRANSPORT)
174 struct ffa_device *
175 ffa_device_register(const struct ffa_partition_info *part_info,
176 const struct ffa_ops *ops);
177 void ffa_device_unregister(struct ffa_device *ffa_dev);
178 int ffa_driver_register(struct ffa_driver *driver, struct module *owner,
179 const char *mod_name);
180 void ffa_driver_unregister(struct ffa_driver *driver);
181 void ffa_devices_unregister(void);
182 bool ffa_device_is_valid(struct ffa_device *ffa_dev);
183
184 #else
185 static inline struct ffa_device *
ffa_device_register(const struct ffa_partition_info * part_info,const struct ffa_ops * ops)186 ffa_device_register(const struct ffa_partition_info *part_info,
187 const struct ffa_ops *ops)
188 {
189 return NULL;
190 }
191
ffa_device_unregister(struct ffa_device * dev)192 static inline void ffa_device_unregister(struct ffa_device *dev) {}
193
ffa_devices_unregister(void)194 static inline void ffa_devices_unregister(void) {}
195
196 static inline int
ffa_driver_register(struct ffa_driver * driver,struct module * owner,const char * mod_name)197 ffa_driver_register(struct ffa_driver *driver, struct module *owner,
198 const char *mod_name)
199 {
200 return -EINVAL;
201 }
202
ffa_driver_unregister(struct ffa_driver * driver)203 static inline void ffa_driver_unregister(struct ffa_driver *driver) {}
204
205 static inline
ffa_device_is_valid(struct ffa_device * ffa_dev)206 bool ffa_device_is_valid(struct ffa_device *ffa_dev) { return false; }
207
208 #endif /* CONFIG_ARM_FFA_TRANSPORT */
209
210 #define ffa_register(driver) \
211 ffa_driver_register(driver, THIS_MODULE, KBUILD_MODNAME)
212 #define ffa_unregister(driver) \
213 ffa_driver_unregister(driver)
214
215 /**
216 * module_ffa_driver() - Helper macro for registering a psa_ffa driver
217 * @__ffa_driver: ffa_driver structure
218 *
219 * Helper macro for psa_ffa drivers to set up proper module init / exit
220 * functions. Replaces module_init() and module_exit() and keeps people from
221 * printing pointless things to the kernel log when their driver is loaded.
222 */
223 #define module_ffa_driver(__ffa_driver) \
224 module_driver(__ffa_driver, ffa_register, ffa_unregister)
225
226 extern const struct bus_type ffa_bus_type;
227
228 /* The FF-A 1.0 partition structure lacks the uuid[4] */
229 #define FFA_1_0_PARTITON_INFO_SZ (8)
230
231 /* FFA transport related */
232 struct ffa_partition_info {
233 u16 id;
234 u16 exec_ctxt;
235 /* partition supports receipt of direct requests */
236 #define FFA_PARTITION_DIRECT_RECV BIT(0)
237 /* partition can send direct requests. */
238 #define FFA_PARTITION_DIRECT_SEND BIT(1)
239 /* partition can send and receive indirect messages. */
240 #define FFA_PARTITION_INDIRECT_MSG BIT(2)
241 /* partition can receive notifications */
242 #define FFA_PARTITION_NOTIFICATION_RECV BIT(3)
243 /* partition runs in the AArch64 execution state. */
244 #define FFA_PARTITION_AARCH64_EXEC BIT(8)
245 /* partition supports receipt of direct request2 */
246 #define FFA_PARTITION_DIRECT_REQ2_RECV BIT(9)
247 /* partition can send direct request2. */
248 #define FFA_PARTITION_DIRECT_REQ2_SEND BIT(10)
249 u32 properties;
250 uuid_t uuid;
251 };
252
253 static inline
ffa_partition_check_property(struct ffa_device * dev,u32 property)254 bool ffa_partition_check_property(struct ffa_device *dev, u32 property)
255 {
256 return dev->properties & property;
257 }
258
259 #define ffa_partition_supports_notify_recv(dev) \
260 ffa_partition_check_property(dev, FFA_PARTITION_NOTIFICATION_RECV)
261
262 #define ffa_partition_supports_indirect_msg(dev) \
263 ffa_partition_check_property(dev, FFA_PARTITION_INDIRECT_MSG)
264
265 #define ffa_partition_supports_direct_recv(dev) \
266 ffa_partition_check_property(dev, FFA_PARTITION_DIRECT_RECV)
267
268 #define ffa_partition_supports_direct_req2_recv(dev) \
269 (ffa_partition_check_property(dev, FFA_PARTITION_DIRECT_REQ2_RECV) && \
270 !dev->mode_32bit)
271
272 /* For use with FFA_MSG_SEND_DIRECT_{REQ,RESP} which pass data via registers */
273 struct ffa_send_direct_data {
274 unsigned long data0; /* w3/x3 */
275 unsigned long data1; /* w4/x4 */
276 unsigned long data2; /* w5/x5 */
277 unsigned long data3; /* w6/x6 */
278 unsigned long data4; /* w7/x7 */
279 };
280
281 struct ffa_indirect_msg_hdr {
282 u32 flags;
283 u32 res0;
284 u32 offset;
285 u32 send_recv_id;
286 u32 size;
287 u32 res1;
288 uuid_t uuid;
289 };
290
291 /* For use with FFA_MSG_SEND_DIRECT_{REQ,RESP}2 which pass data via registers */
292 struct ffa_send_direct_data2 {
293 unsigned long data[14]; /* x4-x17 */
294 };
295
296 struct ffa_mem_region_addr_range {
297 /* The base IPA of the constituent memory region, aligned to 4 kiB */
298 u64 address;
299 /* The number of 4 kiB pages in the constituent memory region. */
300 u32 pg_cnt;
301 u32 reserved;
302 };
303
304 struct ffa_composite_mem_region {
305 /*
306 * The total number of 4 kiB pages included in this memory region. This
307 * must be equal to the sum of page counts specified in each
308 * `struct ffa_mem_region_addr_range`.
309 */
310 u32 total_pg_cnt;
311 /* The number of constituents included in this memory region range */
312 u32 addr_range_cnt;
313 u64 reserved;
314 /** An array of `addr_range_cnt` memory region constituents. */
315 struct ffa_mem_region_addr_range constituents[];
316 };
317
318 struct ffa_mem_region_attributes {
319 /* The ID of the VM to which the memory is being given or shared. */
320 u16 receiver;
321 /*
322 * The permissions with which the memory region should be mapped in the
323 * receiver's page table.
324 */
325 #define FFA_MEM_EXEC BIT(3)
326 #define FFA_MEM_NO_EXEC BIT(2)
327 #define FFA_MEM_RW BIT(1)
328 #define FFA_MEM_RO BIT(0)
329 u8 attrs;
330 /*
331 * Flags used during FFA_MEM_RETRIEVE_REQ and FFA_MEM_RETRIEVE_RESP
332 * for memory regions with multiple borrowers.
333 */
334 #define FFA_MEM_RETRIEVE_SELF_BORROWER BIT(0)
335 u8 flag;
336 /*
337 * Offset in bytes from the start of the outer `ffa_memory_region` to
338 * an `struct ffa_mem_region_addr_range`.
339 */
340 u32 composite_off;
341 u8 impdef_val[16];
342 u64 reserved;
343 };
344
345 struct ffa_mem_region {
346 /* The ID of the VM/owner which originally sent the memory region */
347 u16 sender_id;
348 #define FFA_MEM_NORMAL BIT(5)
349 #define FFA_MEM_DEVICE BIT(4)
350
351 #define FFA_MEM_WRITE_BACK (3 << 2)
352 #define FFA_MEM_NON_CACHEABLE (1 << 2)
353
354 #define FFA_DEV_nGnRnE (0 << 2)
355 #define FFA_DEV_nGnRE (1 << 2)
356 #define FFA_DEV_nGRE (2 << 2)
357 #define FFA_DEV_GRE (3 << 2)
358
359 #define FFA_MEM_NON_SHAREABLE (0)
360 #define FFA_MEM_OUTER_SHAREABLE (2)
361 #define FFA_MEM_INNER_SHAREABLE (3)
362 /* Memory region attributes, upper byte MBZ pre v1.1 */
363 u16 attributes;
364 /*
365 * Clear memory region contents after unmapping it from the sender and
366 * before mapping it for any receiver.
367 */
368 #define FFA_MEM_CLEAR BIT(0)
369 /*
370 * Whether the hypervisor may time slice the memory sharing or retrieval
371 * operation.
372 */
373 #define FFA_TIME_SLICE_ENABLE BIT(1)
374
375 #define FFA_MEM_RETRIEVE_TYPE_IN_RESP (0 << 3)
376 #define FFA_MEM_RETRIEVE_TYPE_SHARE (1 << 3)
377 #define FFA_MEM_RETRIEVE_TYPE_LEND (2 << 3)
378 #define FFA_MEM_RETRIEVE_TYPE_DONATE (3 << 3)
379
380 #define FFA_MEM_RETRIEVE_ADDR_ALIGN_HINT BIT(9)
381 #define FFA_MEM_RETRIEVE_ADDR_ALIGN(x) ((x) << 5)
382 /* Flags to control behaviour of the transaction. */
383 u32 flags;
384 #define HANDLE_LOW_MASK GENMASK_ULL(31, 0)
385 #define HANDLE_HIGH_MASK GENMASK_ULL(63, 32)
386 #define HANDLE_LOW(x) ((u32)(FIELD_GET(HANDLE_LOW_MASK, (x))))
387 #define HANDLE_HIGH(x) ((u32)(FIELD_GET(HANDLE_HIGH_MASK, (x))))
388
389 #define PACK_HANDLE(l, h) \
390 (FIELD_PREP(HANDLE_LOW_MASK, (l)) | FIELD_PREP(HANDLE_HIGH_MASK, (h)))
391 /*
392 * A globally-unique ID assigned by the hypervisor for a region
393 * of memory being sent between VMs.
394 */
395 u64 handle;
396 /*
397 * An implementation defined value associated with the receiver and the
398 * memory region.
399 */
400 u64 tag;
401 /* Size of each endpoint memory access descriptor, MBZ pre v1.1 */
402 u32 ep_mem_size;
403 /*
404 * The number of `ffa_mem_region_attributes` entries included in this
405 * transaction.
406 */
407 u32 ep_count;
408 /*
409 * 16-byte aligned offset from the base address of this descriptor
410 * to the first element of the endpoint memory access descriptor array
411 * Valid only from v1.1
412 */
413 u32 ep_mem_offset;
414 /* MBZ, valid only from v1.1 */
415 u32 reserved[3];
416 };
417
418 #define CONSTITUENTS_OFFSET(x) \
419 (offsetof(struct ffa_composite_mem_region, constituents[x]))
420
421 #define FFA_EMAD_HAS_IMPDEF_FIELD(version) ((version) >= FFA_VERSION_1_2)
422 #define FFA_MEM_REGION_HAS_EP_MEM_OFFSET(version) ((version) > FFA_VERSION_1_0)
423
ffa_emad_size_get(u32 ffa_version)424 static inline u32 ffa_emad_size_get(u32 ffa_version)
425 {
426 u32 sz;
427 struct ffa_mem_region_attributes *ep_mem_access;
428
429 if (FFA_EMAD_HAS_IMPDEF_FIELD(ffa_version))
430 sz = sizeof(*ep_mem_access);
431 else
432 sz = sizeof(*ep_mem_access) - sizeof(ep_mem_access->impdef_val);
433
434 return sz;
435 }
436
437 static inline u32
ffa_mem_desc_offset(struct ffa_mem_region * buf,int count,u32 ffa_version)438 ffa_mem_desc_offset(struct ffa_mem_region *buf, int count, u32 ffa_version)
439 {
440 u32 offset = count * ffa_emad_size_get(ffa_version);
441 /*
442 * Earlier to v1.1, the endpoint memory descriptor array started at
443 * offset 32(i.e. offset of ep_mem_offset in the current structure)
444 */
445 if (!FFA_MEM_REGION_HAS_EP_MEM_OFFSET(ffa_version))
446 offset += offsetof(struct ffa_mem_region, ep_mem_offset);
447 else
448 offset += sizeof(struct ffa_mem_region);
449
450 return offset;
451 }
452
453 struct ffa_mem_ops_args {
454 bool use_txbuf;
455 u32 nattrs;
456 u32 flags;
457 u64 tag;
458 u64 g_handle;
459 struct scatterlist *sg;
460 struct ffa_mem_region_attributes *attrs;
461 };
462
463 struct ffa_info_ops {
464 u32 (*api_version_get)(void);
465 int (*partition_info_get)(const char *uuid_str,
466 struct ffa_partition_info *buffer);
467 };
468
469 struct ffa_msg_ops {
470 void (*mode_32bit_set)(struct ffa_device *dev);
471 int (*sync_send_receive)(struct ffa_device *dev,
472 struct ffa_send_direct_data *data);
473 int (*indirect_send)(struct ffa_device *dev, void *buf, size_t sz);
474 int (*sync_send_receive2)(struct ffa_device *dev,
475 struct ffa_send_direct_data2 *data);
476 };
477
478 struct ffa_mem_ops {
479 int (*memory_reclaim)(u64 g_handle, u32 flags);
480 int (*memory_share)(struct ffa_mem_ops_args *args);
481 int (*memory_lend)(struct ffa_mem_ops_args *args);
482 };
483
484 struct ffa_cpu_ops {
485 int (*run)(struct ffa_device *dev, u16 vcpu);
486 };
487
488 typedef void (*ffa_sched_recv_cb)(u16 vcpu, bool is_per_vcpu, void *cb_data);
489 typedef void (*ffa_notifier_cb)(int notify_id, void *cb_data);
490 typedef void (*ffa_fwk_notifier_cb)(int notify_id, void *cb_data, void *buf);
491
492 struct ffa_notifier_ops {
493 int (*sched_recv_cb_register)(struct ffa_device *dev,
494 ffa_sched_recv_cb cb, void *cb_data);
495 int (*sched_recv_cb_unregister)(struct ffa_device *dev);
496 int (*notify_request)(struct ffa_device *dev, bool per_vcpu,
497 ffa_notifier_cb cb, void *cb_data, int notify_id);
498 int (*notify_relinquish)(struct ffa_device *dev, int notify_id);
499 int (*fwk_notify_request)(struct ffa_device *dev,
500 ffa_fwk_notifier_cb cb, void *cb_data,
501 int notify_id);
502 int (*fwk_notify_relinquish)(struct ffa_device *dev, int notify_id);
503 int (*notify_send)(struct ffa_device *dev, int notify_id, bool per_vcpu,
504 u16 vcpu);
505 };
506
507 struct ffa_ops {
508 const struct ffa_info_ops *info_ops;
509 const struct ffa_msg_ops *msg_ops;
510 const struct ffa_mem_ops *mem_ops;
511 const struct ffa_cpu_ops *cpu_ops;
512 const struct ffa_notifier_ops *notifier_ops;
513 };
514
515 #endif /* _LINUX_ARM_FFA_H */
516