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-rw-r--r--arch/powerpc/include/asm/epapr_hcalls.h502
-rw-r--r--arch/powerpc/include/asm/fsl_hcalls.h655
2 files changed, 1157 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/epapr_hcalls.h b/arch/powerpc/include/asm/epapr_hcalls.h
new file mode 100644
index 000000000000..f3b0c2cc9fea
--- /dev/null
+++ b/arch/powerpc/include/asm/epapr_hcalls.h
@@ -0,0 +1,502 @@
1/*
2 * ePAPR hcall interface
3 *
4 * Copyright 2008-2011 Freescale Semiconductor, Inc.
5 *
6 * Author: Timur Tabi <timur@freescale.com>
7 *
8 * This file is provided under a dual BSD/GPL license. When using or
9 * redistributing this file, you may do so under either license.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions are met:
13 * * Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * * Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * * Neither the name of Freescale Semiconductor nor the
19 * names of its contributors may be used to endorse or promote products
20 * derived from this software without specific prior written permission.
21 *
22 *
23 * ALTERNATIVELY, this software may be distributed under the terms of the
24 * GNU General Public License ("GPL") as published by the Free Software
25 * Foundation, either version 2 of that License or (at your option) any
26 * later version.
27 *
28 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
29 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
30 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
31 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
32 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
33 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
34 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
35 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
36 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
37 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 */
39
40/* A "hypercall" is an "sc 1" instruction. This header file file provides C
41 * wrapper functions for the ePAPR hypervisor interface. It is inteded
42 * for use by Linux device drivers and other operating systems.
43 *
44 * The hypercalls are implemented as inline assembly, rather than assembly
45 * language functions in a .S file, for optimization. It allows
46 * the caller to issue the hypercall instruction directly, improving both
47 * performance and memory footprint.
48 */
49
50#ifndef _EPAPR_HCALLS_H
51#define _EPAPR_HCALLS_H
52
53#include <linux/types.h>
54#include <linux/errno.h>
55#include <asm/byteorder.h>
56
57#define EV_BYTE_CHANNEL_SEND 1
58#define EV_BYTE_CHANNEL_RECEIVE 2
59#define EV_BYTE_CHANNEL_POLL 3
60#define EV_INT_SET_CONFIG 4
61#define EV_INT_GET_CONFIG 5
62#define EV_INT_SET_MASK 6
63#define EV_INT_GET_MASK 7
64#define EV_INT_IACK 9
65#define EV_INT_EOI 10
66#define EV_INT_SEND_IPI 11
67#define EV_INT_SET_TASK_PRIORITY 12
68#define EV_INT_GET_TASK_PRIORITY 13
69#define EV_DOORBELL_SEND 14
70#define EV_MSGSND 15
71#define EV_IDLE 16
72
73/* vendor ID: epapr */
74#define EV_LOCAL_VENDOR_ID 0 /* for private use */
75#define EV_EPAPR_VENDOR_ID 1
76#define EV_FSL_VENDOR_ID 2 /* Freescale Semiconductor */
77#define EV_IBM_VENDOR_ID 3 /* IBM */
78#define EV_GHS_VENDOR_ID 4 /* Green Hills Software */
79#define EV_ENEA_VENDOR_ID 5 /* Enea */
80#define EV_WR_VENDOR_ID 6 /* Wind River Systems */
81#define EV_AMCC_VENDOR_ID 7 /* Applied Micro Circuits */
82#define EV_KVM_VENDOR_ID 42 /* KVM */
83
84/* The max number of bytes that a byte channel can send or receive per call */
85#define EV_BYTE_CHANNEL_MAX_BYTES 16
86
87
88#define _EV_HCALL_TOKEN(id, num) (((id) << 16) | (num))
89#define EV_HCALL_TOKEN(hcall_num) _EV_HCALL_TOKEN(EV_EPAPR_VENDOR_ID, hcall_num)
90
91/* epapr error codes */
92#define EV_EPERM 1 /* Operation not permitted */
93#define EV_ENOENT 2 /* Entry Not Found */
94#define EV_EIO 3 /* I/O error occured */
95#define EV_EAGAIN 4 /* The operation had insufficient
96 * resources to complete and should be
97 * retried
98 */
99#define EV_ENOMEM 5 /* There was insufficient memory to
100 * complete the operation */
101#define EV_EFAULT 6 /* Bad guest address */
102#define EV_ENODEV 7 /* No such device */
103#define EV_EINVAL 8 /* An argument supplied to the hcall
104 was out of range or invalid */
105#define EV_INTERNAL 9 /* An internal error occured */
106#define EV_CONFIG 10 /* A configuration error was detected */
107#define EV_INVALID_STATE 11 /* The object is in an invalid state */
108#define EV_UNIMPLEMENTED 12 /* Unimplemented hypercall */
109#define EV_BUFFER_OVERFLOW 13 /* Caller-supplied buffer too small */
110
111/*
112 * Hypercall register clobber list
113 *
114 * These macros are used to define the list of clobbered registers during a
115 * hypercall. Technically, registers r0 and r3-r12 are always clobbered,
116 * but the gcc inline assembly syntax does not allow us to specify registers
117 * on the clobber list that are also on the input/output list. Therefore,
118 * the lists of clobbered registers depends on the number of register
119 * parmeters ("+r" and "=r") passed to the hypercall.
120 *
121 * Each assembly block should use one of the HCALL_CLOBBERSx macros. As a
122 * general rule, 'x' is the number of parameters passed to the assembly
123 * block *except* for r11.
124 *
125 * If you're not sure, just use the smallest value of 'x' that does not
126 * generate a compilation error. Because these are static inline functions,
127 * the compiler will only check the clobber list for a function if you
128 * compile code that calls that function.
129 *
130 * r3 and r11 are not included in any clobbers list because they are always
131 * listed as output registers.
132 *
133 * XER, CTR, and LR are currently listed as clobbers because it's uncertain
134 * whether they will be clobbered.
135 *
136 * Note that r11 can be used as an output parameter.
137*/
138
139/* List of common clobbered registers. Do not use this macro. */
140#define EV_HCALL_CLOBBERS "r0", "r12", "xer", "ctr", "lr", "cc"
141
142#define EV_HCALL_CLOBBERS8 EV_HCALL_CLOBBERS
143#define EV_HCALL_CLOBBERS7 EV_HCALL_CLOBBERS8, "r10"
144#define EV_HCALL_CLOBBERS6 EV_HCALL_CLOBBERS7, "r9"
145#define EV_HCALL_CLOBBERS5 EV_HCALL_CLOBBERS6, "r8"
146#define EV_HCALL_CLOBBERS4 EV_HCALL_CLOBBERS5, "r7"
147#define EV_HCALL_CLOBBERS3 EV_HCALL_CLOBBERS4, "r6"
148#define EV_HCALL_CLOBBERS2 EV_HCALL_CLOBBERS3, "r5"
149#define EV_HCALL_CLOBBERS1 EV_HCALL_CLOBBERS2, "r4"
150
151
152/*
153 * We use "uintptr_t" to define a register because it's guaranteed to be a
154 * 32-bit integer on a 32-bit platform, and a 64-bit integer on a 64-bit
155 * platform.
156 *
157 * All registers are either input/output or output only. Registers that are
158 * initialized before making the hypercall are input/output. All
159 * input/output registers are represented with "+r". Output-only registers
160 * are represented with "=r". Do not specify any unused registers. The
161 * clobber list will tell the compiler that the hypercall modifies those
162 * registers, which is good enough.
163 */
164
165/**
166 * ev_int_set_config - configure the specified interrupt
167 * @interrupt: the interrupt number
168 * @config: configuration for this interrupt
169 * @priority: interrupt priority
170 * @destination: destination CPU number
171 *
172 * Returns 0 for success, or an error code.
173 */
174static inline unsigned int ev_int_set_config(unsigned int interrupt,
175 uint32_t config, unsigned int priority, uint32_t destination)
176{
177 register uintptr_t r11 __asm__("r11");
178 register uintptr_t r3 __asm__("r3");
179 register uintptr_t r4 __asm__("r4");
180 register uintptr_t r5 __asm__("r5");
181 register uintptr_t r6 __asm__("r6");
182
183 r11 = EV_HCALL_TOKEN(EV_INT_SET_CONFIG);
184 r3 = interrupt;
185 r4 = config;
186 r5 = priority;
187 r6 = destination;
188
189 __asm__ __volatile__ ("sc 1"
190 : "+r" (r11), "+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6)
191 : : EV_HCALL_CLOBBERS4
192 );
193
194 return r3;
195}
196
197/**
198 * ev_int_get_config - return the config of the specified interrupt
199 * @interrupt: the interrupt number
200 * @config: returned configuration for this interrupt
201 * @priority: returned interrupt priority
202 * @destination: returned destination CPU number
203 *
204 * Returns 0 for success, or an error code.
205 */
206static inline unsigned int ev_int_get_config(unsigned int interrupt,
207 uint32_t *config, unsigned int *priority, uint32_t *destination)
208{
209 register uintptr_t r11 __asm__("r11");
210 register uintptr_t r3 __asm__("r3");
211 register uintptr_t r4 __asm__("r4");
212 register uintptr_t r5 __asm__("r5");
213 register uintptr_t r6 __asm__("r6");
214
215 r11 = EV_HCALL_TOKEN(EV_INT_GET_CONFIG);
216 r3 = interrupt;
217
218 __asm__ __volatile__ ("sc 1"
219 : "+r" (r11), "+r" (r3), "=r" (r4), "=r" (r5), "=r" (r6)
220 : : EV_HCALL_CLOBBERS4
221 );
222
223 *config = r4;
224 *priority = r5;
225 *destination = r6;
226
227 return r3;
228}
229
230/**
231 * ev_int_set_mask - sets the mask for the specified interrupt source
232 * @interrupt: the interrupt number
233 * @mask: 0=enable interrupts, 1=disable interrupts
234 *
235 * Returns 0 for success, or an error code.
236 */
237static inline unsigned int ev_int_set_mask(unsigned int interrupt,
238 unsigned int mask)
239{
240 register uintptr_t r11 __asm__("r11");
241 register uintptr_t r3 __asm__("r3");
242 register uintptr_t r4 __asm__("r4");
243
244 r11 = EV_HCALL_TOKEN(EV_INT_SET_MASK);
245 r3 = interrupt;
246 r4 = mask;
247
248 __asm__ __volatile__ ("sc 1"
249 : "+r" (r11), "+r" (r3), "+r" (r4)
250 : : EV_HCALL_CLOBBERS2
251 );
252
253 return r3;
254}
255
256/**
257 * ev_int_get_mask - returns the mask for the specified interrupt source
258 * @interrupt: the interrupt number
259 * @mask: returned mask for this interrupt (0=enabled, 1=disabled)
260 *
261 * Returns 0 for success, or an error code.
262 */
263static inline unsigned int ev_int_get_mask(unsigned int interrupt,
264 unsigned int *mask)
265{
266 register uintptr_t r11 __asm__("r11");
267 register uintptr_t r3 __asm__("r3");
268 register uintptr_t r4 __asm__("r4");
269
270 r11 = EV_HCALL_TOKEN(EV_INT_GET_MASK);
271 r3 = interrupt;
272
273 __asm__ __volatile__ ("sc 1"
274 : "+r" (r11), "+r" (r3), "=r" (r4)
275 : : EV_HCALL_CLOBBERS2
276 );
277
278 *mask = r4;
279
280 return r3;
281}
282
283/**
284 * ev_int_eoi - signal the end of interrupt processing
285 * @interrupt: the interrupt number
286 *
287 * This function signals the end of processing for the the specified
288 * interrupt, which must be the interrupt currently in service. By
289 * definition, this is also the highest-priority interrupt.
290 *
291 * Returns 0 for success, or an error code.
292 */
293static inline unsigned int ev_int_eoi(unsigned int interrupt)
294{
295 register uintptr_t r11 __asm__("r11");
296 register uintptr_t r3 __asm__("r3");
297
298 r11 = EV_HCALL_TOKEN(EV_INT_EOI);
299 r3 = interrupt;
300
301 __asm__ __volatile__ ("sc 1"
302 : "+r" (r11), "+r" (r3)
303 : : EV_HCALL_CLOBBERS1
304 );
305
306 return r3;
307}
308
309/**
310 * ev_byte_channel_send - send characters to a byte stream
311 * @handle: byte stream handle
312 * @count: (input) num of chars to send, (output) num chars sent
313 * @buffer: pointer to a 16-byte buffer
314 *
315 * @buffer must be at least 16 bytes long, because all 16 bytes will be
316 * read from memory into registers, even if count < 16.
317 *
318 * Returns 0 for success, or an error code.
319 */
320static inline unsigned int ev_byte_channel_send(unsigned int handle,
321 unsigned int *count, const char buffer[EV_BYTE_CHANNEL_MAX_BYTES])
322{
323 register uintptr_t r11 __asm__("r11");
324 register uintptr_t r3 __asm__("r3");
325 register uintptr_t r4 __asm__("r4");
326 register uintptr_t r5 __asm__("r5");
327 register uintptr_t r6 __asm__("r6");
328 register uintptr_t r7 __asm__("r7");
329 register uintptr_t r8 __asm__("r8");
330 const uint32_t *p = (const uint32_t *) buffer;
331
332 r11 = EV_HCALL_TOKEN(EV_BYTE_CHANNEL_SEND);
333 r3 = handle;
334 r4 = *count;
335 r5 = be32_to_cpu(p[0]);
336 r6 = be32_to_cpu(p[1]);
337 r7 = be32_to_cpu(p[2]);
338 r8 = be32_to_cpu(p[3]);
339
340 __asm__ __volatile__ ("sc 1"
341 : "+r" (r11), "+r" (r3),
342 "+r" (r4), "+r" (r5), "+r" (r6), "+r" (r7), "+r" (r8)
343 : : EV_HCALL_CLOBBERS6
344 );
345
346 *count = r4;
347
348 return r3;
349}
350
351/**
352 * ev_byte_channel_receive - fetch characters from a byte channel
353 * @handle: byte channel handle
354 * @count: (input) max num of chars to receive, (output) num chars received
355 * @buffer: pointer to a 16-byte buffer
356 *
357 * The size of @buffer must be at least 16 bytes, even if you request fewer
358 * than 16 characters, because we always write 16 bytes to @buffer. This is
359 * for performance reasons.
360 *
361 * Returns 0 for success, or an error code.
362 */
363static inline unsigned int ev_byte_channel_receive(unsigned int handle,
364 unsigned int *count, char buffer[EV_BYTE_CHANNEL_MAX_BYTES])
365{
366 register uintptr_t r11 __asm__("r11");
367 register uintptr_t r3 __asm__("r3");
368 register uintptr_t r4 __asm__("r4");
369 register uintptr_t r5 __asm__("r5");
370 register uintptr_t r6 __asm__("r6");
371 register uintptr_t r7 __asm__("r7");
372 register uintptr_t r8 __asm__("r8");
373 uint32_t *p = (uint32_t *) buffer;
374
375 r11 = EV_HCALL_TOKEN(EV_BYTE_CHANNEL_RECEIVE);
376 r3 = handle;
377 r4 = *count;
378
379 __asm__ __volatile__ ("sc 1"
380 : "+r" (r11), "+r" (r3), "+r" (r4),
381 "=r" (r5), "=r" (r6), "=r" (r7), "=r" (r8)
382 : : EV_HCALL_CLOBBERS6
383 );
384
385 *count = r4;
386 p[0] = cpu_to_be32(r5);
387 p[1] = cpu_to_be32(r6);
388 p[2] = cpu_to_be32(r7);
389 p[3] = cpu_to_be32(r8);
390
391 return r3;
392}
393
394/**
395 * ev_byte_channel_poll - returns the status of the byte channel buffers
396 * @handle: byte channel handle
397 * @rx_count: returned count of bytes in receive queue
398 * @tx_count: returned count of free space in transmit queue
399 *
400 * This function reports the amount of data in the receive queue (i.e. the
401 * number of bytes you can read), and the amount of free space in the transmit
402 * queue (i.e. the number of bytes you can write).
403 *
404 * Returns 0 for success, or an error code.
405 */
406static inline unsigned int ev_byte_channel_poll(unsigned int handle,
407 unsigned int *rx_count, unsigned int *tx_count)
408{
409 register uintptr_t r11 __asm__("r11");
410 register uintptr_t r3 __asm__("r3");
411 register uintptr_t r4 __asm__("r4");
412 register uintptr_t r5 __asm__("r5");
413
414 r11 = EV_HCALL_TOKEN(EV_BYTE_CHANNEL_POLL);
415 r3 = handle;
416
417 __asm__ __volatile__ ("sc 1"
418 : "+r" (r11), "+r" (r3), "=r" (r4), "=r" (r5)
419 : : EV_HCALL_CLOBBERS3
420 );
421
422 *rx_count = r4;
423 *tx_count = r5;
424
425 return r3;
426}
427
428/**
429 * ev_int_iack - acknowledge an interrupt
430 * @handle: handle to the target interrupt controller
431 * @vector: returned interrupt vector
432 *
433 * If handle is zero, the function returns the next interrupt source
434 * number to be handled irrespective of the hierarchy or cascading
435 * of interrupt controllers. If non-zero, specifies a handle to the
436 * interrupt controller that is the target of the acknowledge.
437 *
438 * Returns 0 for success, or an error code.
439 */
440static inline unsigned int ev_int_iack(unsigned int handle,
441 unsigned int *vector)
442{
443 register uintptr_t r11 __asm__("r11");
444 register uintptr_t r3 __asm__("r3");
445 register uintptr_t r4 __asm__("r4");
446
447 r11 = EV_HCALL_TOKEN(EV_INT_IACK);
448 r3 = handle;
449
450 __asm__ __volatile__ ("sc 1"
451 : "+r" (r11), "+r" (r3), "=r" (r4)
452 : : EV_HCALL_CLOBBERS2
453 );
454
455 *vector = r4;
456
457 return r3;
458}
459
460/**
461 * ev_doorbell_send - send a doorbell to another partition
462 * @handle: doorbell send handle
463 *
464 * Returns 0 for success, or an error code.
465 */
466static inline unsigned int ev_doorbell_send(unsigned int handle)
467{
468 register uintptr_t r11 __asm__("r11");
469 register uintptr_t r3 __asm__("r3");
470
471 r11 = EV_HCALL_TOKEN(EV_DOORBELL_SEND);
472 r3 = handle;
473
474 __asm__ __volatile__ ("sc 1"
475 : "+r" (r11), "+r" (r3)
476 : : EV_HCALL_CLOBBERS1
477 );
478
479 return r3;
480}
481
482/**
483 * ev_idle -- wait for next interrupt on this core
484 *
485 * Returns 0 for success, or an error code.
486 */
487static inline unsigned int ev_idle(void)
488{
489 register uintptr_t r11 __asm__("r11");
490 register uintptr_t r3 __asm__("r3");
491
492 r11 = EV_HCALL_TOKEN(EV_IDLE);
493
494 __asm__ __volatile__ ("sc 1"
495 : "+r" (r11), "=r" (r3)
496 : : EV_HCALL_CLOBBERS1
497 );
498
499 return r3;
500}
501
502#endif
diff --git a/arch/powerpc/include/asm/fsl_hcalls.h b/arch/powerpc/include/asm/fsl_hcalls.h
new file mode 100644
index 000000000000..922d9b5fe3d5
--- /dev/null
+++ b/arch/powerpc/include/asm/fsl_hcalls.h
@@ -0,0 +1,655 @@
1/*
2 * Freescale hypervisor call interface
3 *
4 * Copyright 2008-2010 Freescale Semiconductor, Inc.
5 *
6 * Author: Timur Tabi <timur@freescale.com>
7 *
8 * This file is provided under a dual BSD/GPL license. When using or
9 * redistributing this file, you may do so under either license.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions are met:
13 * * Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * * Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * * Neither the name of Freescale Semiconductor nor the
19 * names of its contributors may be used to endorse or promote products
20 * derived from this software without specific prior written permission.
21 *
22 *
23 * ALTERNATIVELY, this software may be distributed under the terms of the
24 * GNU General Public License ("GPL") as published by the Free Software
25 * Foundation, either version 2 of that License or (at your option) any
26 * later version.
27 *
28 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
29 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
30 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
31 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
32 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
33 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
34 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
35 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
36 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
37 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 */
39
40#ifndef _FSL_HCALLS_H
41#define _FSL_HCALLS_H
42
43#include <linux/types.h>
44#include <linux/errno.h>
45#include <asm/byteorder.h>
46#include <asm/epapr_hcalls.h>
47
48#define FH_API_VERSION 1
49
50#define FH_ERR_GET_INFO 1
51#define FH_PARTITION_GET_DTPROP 2
52#define FH_PARTITION_SET_DTPROP 3
53#define FH_PARTITION_RESTART 4
54#define FH_PARTITION_GET_STATUS 5
55#define FH_PARTITION_START 6
56#define FH_PARTITION_STOP 7
57#define FH_PARTITION_MEMCPY 8
58#define FH_DMA_ENABLE 9
59#define FH_DMA_DISABLE 10
60#define FH_SEND_NMI 11
61#define FH_VMPIC_GET_MSIR 12
62#define FH_SYSTEM_RESET 13
63#define FH_GET_CORE_STATE 14
64#define FH_ENTER_NAP 15
65#define FH_EXIT_NAP 16
66#define FH_CLAIM_DEVICE 17
67#define FH_PARTITION_STOP_DMA 18
68
69/* vendor ID: Freescale Semiconductor */
70#define FH_HCALL_TOKEN(num) _EV_HCALL_TOKEN(EV_FSL_VENDOR_ID, num)
71
72/*
73 * We use "uintptr_t" to define a register because it's guaranteed to be a
74 * 32-bit integer on a 32-bit platform, and a 64-bit integer on a 64-bit
75 * platform.
76 *
77 * All registers are either input/output or output only. Registers that are
78 * initialized before making the hypercall are input/output. All
79 * input/output registers are represented with "+r". Output-only registers
80 * are represented with "=r". Do not specify any unused registers. The
81 * clobber list will tell the compiler that the hypercall modifies those
82 * registers, which is good enough.
83 */
84
85/**
86 * fh_send_nmi - send NMI to virtual cpu(s).
87 * @vcpu_mask: send NMI to virtual cpu(s) specified by this mask.
88 *
89 * Returns 0 for success, or EINVAL for invalid vcpu_mask.
90 */
91static inline unsigned int fh_send_nmi(unsigned int vcpu_mask)
92{
93 register uintptr_t r11 __asm__("r11");
94 register uintptr_t r3 __asm__("r3");
95
96 r11 = FH_HCALL_TOKEN(FH_SEND_NMI);
97 r3 = vcpu_mask;
98
99 __asm__ __volatile__ ("sc 1"
100 : "+r" (r11), "+r" (r3)
101 : : EV_HCALL_CLOBBERS1
102 );
103
104 return r3;
105}
106
107/* Arbitrary limits to avoid excessive memory allocation in hypervisor */
108#define FH_DTPROP_MAX_PATHLEN 4096
109#define FH_DTPROP_MAX_PROPLEN 32768
110
111/**
112 * fh_partiton_get_dtprop - get a property from a guest device tree.
113 * @handle: handle of partition whose device tree is to be accessed
114 * @dtpath_addr: physical address of device tree path to access
115 * @propname_addr: physical address of name of property
116 * @propvalue_addr: physical address of property value buffer
117 * @propvalue_len: length of buffer on entry, length of property on return
118 *
119 * Returns zero on success, non-zero on error.
120 */
121static inline unsigned int fh_partition_get_dtprop(int handle,
122 uint64_t dtpath_addr,
123 uint64_t propname_addr,
124 uint64_t propvalue_addr,
125 uint32_t *propvalue_len)
126{
127 register uintptr_t r11 __asm__("r11");
128 register uintptr_t r3 __asm__("r3");
129 register uintptr_t r4 __asm__("r4");
130 register uintptr_t r5 __asm__("r5");
131 register uintptr_t r6 __asm__("r6");
132 register uintptr_t r7 __asm__("r7");
133 register uintptr_t r8 __asm__("r8");
134 register uintptr_t r9 __asm__("r9");
135 register uintptr_t r10 __asm__("r10");
136
137 r11 = FH_HCALL_TOKEN(FH_PARTITION_GET_DTPROP);
138 r3 = handle;
139
140#ifdef CONFIG_PHYS_64BIT
141 r4 = dtpath_addr >> 32;
142 r6 = propname_addr >> 32;
143 r8 = propvalue_addr >> 32;
144#else
145 r4 = 0;
146 r6 = 0;
147 r8 = 0;
148#endif
149 r5 = (uint32_t)dtpath_addr;
150 r7 = (uint32_t)propname_addr;
151 r9 = (uint32_t)propvalue_addr;
152 r10 = *propvalue_len;
153
154 __asm__ __volatile__ ("sc 1"
155 : "+r" (r11),
156 "+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6), "+r" (r7),
157 "+r" (r8), "+r" (r9), "+r" (r10)
158 : : EV_HCALL_CLOBBERS8
159 );
160
161 *propvalue_len = r4;
162 return r3;
163}
164
165/**
166 * Set a property in a guest device tree.
167 * @handle: handle of partition whose device tree is to be accessed
168 * @dtpath_addr: physical address of device tree path to access
169 * @propname_addr: physical address of name of property
170 * @propvalue_addr: physical address of property value
171 * @propvalue_len: length of property
172 *
173 * Returns zero on success, non-zero on error.
174 */
175static inline unsigned int fh_partition_set_dtprop(int handle,
176 uint64_t dtpath_addr,
177 uint64_t propname_addr,
178 uint64_t propvalue_addr,
179 uint32_t propvalue_len)
180{
181 register uintptr_t r11 __asm__("r11");
182 register uintptr_t r3 __asm__("r3");
183 register uintptr_t r4 __asm__("r4");
184 register uintptr_t r6 __asm__("r6");
185 register uintptr_t r8 __asm__("r8");
186 register uintptr_t r5 __asm__("r5");
187 register uintptr_t r7 __asm__("r7");
188 register uintptr_t r9 __asm__("r9");
189 register uintptr_t r10 __asm__("r10");
190
191 r11 = FH_HCALL_TOKEN(FH_PARTITION_SET_DTPROP);
192 r3 = handle;
193
194#ifdef CONFIG_PHYS_64BIT
195 r4 = dtpath_addr >> 32;
196 r6 = propname_addr >> 32;
197 r8 = propvalue_addr >> 32;
198#else
199 r4 = 0;
200 r6 = 0;
201 r8 = 0;
202#endif
203 r5 = (uint32_t)dtpath_addr;
204 r7 = (uint32_t)propname_addr;
205 r9 = (uint32_t)propvalue_addr;
206 r10 = propvalue_len;
207
208 __asm__ __volatile__ ("sc 1"
209 : "+r" (r11),
210 "+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6), "+r" (r7),
211 "+r" (r8), "+r" (r9), "+r" (r10)
212 : : EV_HCALL_CLOBBERS8
213 );
214
215 return r3;
216}
217
218/**
219 * fh_partition_restart - reboot the current partition
220 * @partition: partition ID
221 *
222 * Returns an error code if reboot failed. Does not return if it succeeds.
223 */
224static inline unsigned int fh_partition_restart(unsigned int partition)
225{
226 register uintptr_t r11 __asm__("r11");
227 register uintptr_t r3 __asm__("r3");
228
229 r11 = FH_HCALL_TOKEN(FH_PARTITION_RESTART);
230 r3 = partition;
231
232 __asm__ __volatile__ ("sc 1"
233 : "+r" (r11), "+r" (r3)
234 : : EV_HCALL_CLOBBERS1
235 );
236
237 return r3;
238}
239
240#define FH_PARTITION_STOPPED 0
241#define FH_PARTITION_RUNNING 1
242#define FH_PARTITION_STARTING 2
243#define FH_PARTITION_STOPPING 3
244#define FH_PARTITION_PAUSING 4
245#define FH_PARTITION_PAUSED 5
246#define FH_PARTITION_RESUMING 6
247
248/**
249 * fh_partition_get_status - gets the status of a partition
250 * @partition: partition ID
251 * @status: returned status code
252 *
253 * Returns 0 for success, or an error code.
254 */
255static inline unsigned int fh_partition_get_status(unsigned int partition,
256 unsigned int *status)
257{
258 register uintptr_t r11 __asm__("r11");
259 register uintptr_t r3 __asm__("r3");
260 register uintptr_t r4 __asm__("r4");
261
262 r11 = FH_HCALL_TOKEN(FH_PARTITION_GET_STATUS);
263 r3 = partition;
264
265 __asm__ __volatile__ ("sc 1"
266 : "+r" (r11), "+r" (r3), "=r" (r4)
267 : : EV_HCALL_CLOBBERS2
268 );
269
270 *status = r4;
271
272 return r3;
273}
274
275/**
276 * fh_partition_start - boots and starts execution of the specified partition
277 * @partition: partition ID
278 * @entry_point: guest physical address to start execution
279 *
280 * The hypervisor creates a 1-to-1 virtual/physical IMA mapping, so at boot
281 * time, guest physical address are the same as guest virtual addresses.
282 *
283 * Returns 0 for success, or an error code.
284 */
285static inline unsigned int fh_partition_start(unsigned int partition,
286 uint32_t entry_point, int load)
287{
288 register uintptr_t r11 __asm__("r11");
289 register uintptr_t r3 __asm__("r3");
290 register uintptr_t r4 __asm__("r4");
291 register uintptr_t r5 __asm__("r5");
292
293 r11 = FH_HCALL_TOKEN(FH_PARTITION_START);
294 r3 = partition;
295 r4 = entry_point;
296 r5 = load;
297
298 __asm__ __volatile__ ("sc 1"
299 : "+r" (r11), "+r" (r3), "+r" (r4), "+r" (r5)
300 : : EV_HCALL_CLOBBERS3
301 );
302
303 return r3;
304}
305
306/**
307 * fh_partition_stop - stops another partition
308 * @partition: partition ID
309 *
310 * Returns 0 for success, or an error code.
311 */
312static inline unsigned int fh_partition_stop(unsigned int partition)
313{
314 register uintptr_t r11 __asm__("r11");
315 register uintptr_t r3 __asm__("r3");
316
317 r11 = FH_HCALL_TOKEN(FH_PARTITION_STOP);
318 r3 = partition;
319
320 __asm__ __volatile__ ("sc 1"
321 : "+r" (r11), "+r" (r3)
322 : : EV_HCALL_CLOBBERS1
323 );
324
325 return r3;
326}
327
328/**
329 * struct fh_sg_list: definition of the fh_partition_memcpy S/G list
330 * @source: guest physical address to copy from
331 * @target: guest physical address to copy to
332 * @size: number of bytes to copy
333 * @reserved: reserved, must be zero
334 *
335 * The scatter/gather list for fh_partition_memcpy() is an array of these
336 * structures. The array must be guest physically contiguous.
337 *
338 * This structure must be aligned on 32-byte boundary, so that no single
339 * strucuture can span two pages.
340 */
341struct fh_sg_list {
342 uint64_t source; /**< guest physical address to copy from */
343 uint64_t target; /**< guest physical address to copy to */
344 uint64_t size; /**< number of bytes to copy */
345 uint64_t reserved; /**< reserved, must be zero */
346} __attribute__ ((aligned(32)));
347
348/**
349 * fh_partition_memcpy - copies data from one guest to another
350 * @source: the ID of the partition to copy from
351 * @target: the ID of the partition to copy to
352 * @sg_list: guest physical address of an array of &fh_sg_list structures
353 * @count: the number of entries in @sg_list
354 *
355 * Returns 0 for success, or an error code.
356 */
357static inline unsigned int fh_partition_memcpy(unsigned int source,
358 unsigned int target, phys_addr_t sg_list, unsigned int count)
359{
360 register uintptr_t r11 __asm__("r11");
361 register uintptr_t r3 __asm__("r3");
362 register uintptr_t r4 __asm__("r4");
363 register uintptr_t r5 __asm__("r5");
364 register uintptr_t r6 __asm__("r6");
365 register uintptr_t r7 __asm__("r7");
366
367 r11 = FH_HCALL_TOKEN(FH_PARTITION_MEMCPY);
368 r3 = source;
369 r4 = target;
370 r5 = (uint32_t) sg_list;
371
372#ifdef CONFIG_PHYS_64BIT
373 r6 = sg_list >> 32;
374#else
375 r6 = 0;
376#endif
377 r7 = count;
378
379 __asm__ __volatile__ ("sc 1"
380 : "+r" (r11),
381 "+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6), "+r" (r7)
382 : : EV_HCALL_CLOBBERS5
383 );
384
385 return r3;
386}
387
388/**
389 * fh_dma_enable - enable DMA for the specified device
390 * @liodn: the LIODN of the I/O device for which to enable DMA
391 *
392 * Returns 0 for success, or an error code.
393 */
394static inline unsigned int fh_dma_enable(unsigned int liodn)
395{
396 register uintptr_t r11 __asm__("r11");
397 register uintptr_t r3 __asm__("r3");
398
399 r11 = FH_HCALL_TOKEN(FH_DMA_ENABLE);
400 r3 = liodn;
401
402 __asm__ __volatile__ ("sc 1"
403 : "+r" (r11), "+r" (r3)
404 : : EV_HCALL_CLOBBERS1
405 );
406
407 return r3;
408}
409
410/**
411 * fh_dma_disable - disable DMA for the specified device
412 * @liodn: the LIODN of the I/O device for which to disable DMA
413 *
414 * Returns 0 for success, or an error code.
415 */
416static inline unsigned int fh_dma_disable(unsigned int liodn)
417{
418 register uintptr_t r11 __asm__("r11");
419 register uintptr_t r3 __asm__("r3");
420
421 r11 = FH_HCALL_TOKEN(FH_DMA_DISABLE);
422 r3 = liodn;
423
424 __asm__ __volatile__ ("sc 1"
425 : "+r" (r11), "+r" (r3)
426 : : EV_HCALL_CLOBBERS1
427 );
428
429 return r3;
430}
431
432
433/**
434 * fh_vmpic_get_msir - returns the MPIC-MSI register value
435 * @interrupt: the interrupt number
436 * @msir_val: returned MPIC-MSI register value
437 *
438 * Returns 0 for success, or an error code.
439 */
440static inline unsigned int fh_vmpic_get_msir(unsigned int interrupt,
441 unsigned int *msir_val)
442{
443 register uintptr_t r11 __asm__("r11");
444 register uintptr_t r3 __asm__("r3");
445 register uintptr_t r4 __asm__("r4");
446
447 r11 = FH_HCALL_TOKEN(FH_VMPIC_GET_MSIR);
448 r3 = interrupt;
449
450 __asm__ __volatile__ ("sc 1"
451 : "+r" (r11), "+r" (r3), "=r" (r4)
452 : : EV_HCALL_CLOBBERS2
453 );
454
455 *msir_val = r4;
456
457 return r3;
458}
459
460/**
461 * fh_system_reset - reset the system
462 *
463 * Returns 0 for success, or an error code.
464 */
465static inline unsigned int fh_system_reset(void)
466{
467 register uintptr_t r11 __asm__("r11");
468 register uintptr_t r3 __asm__("r3");
469
470 r11 = FH_HCALL_TOKEN(FH_SYSTEM_RESET);
471
472 __asm__ __volatile__ ("sc 1"
473 : "+r" (r11), "=r" (r3)
474 : : EV_HCALL_CLOBBERS1
475 );
476
477 return r3;
478}
479
480
481/**
482 * fh_err_get_info - get platform error information
483 * @queue id:
484 * 0 for guest error event queue
485 * 1 for global error event queue
486 *
487 * @pointer to store the platform error data:
488 * platform error data is returned in registers r4 - r11
489 *
490 * Returns 0 for success, or an error code.
491 */
492static inline unsigned int fh_err_get_info(int queue, uint32_t *bufsize,
493 uint32_t addr_hi, uint32_t addr_lo, int peek)
494{
495 register uintptr_t r11 __asm__("r11");
496 register uintptr_t r3 __asm__("r3");
497 register uintptr_t r4 __asm__("r4");
498 register uintptr_t r5 __asm__("r5");
499 register uintptr_t r6 __asm__("r6");
500 register uintptr_t r7 __asm__("r7");
501
502 r11 = FH_HCALL_TOKEN(FH_ERR_GET_INFO);
503 r3 = queue;
504 r4 = *bufsize;
505 r5 = addr_hi;
506 r6 = addr_lo;
507 r7 = peek;
508
509 __asm__ __volatile__ ("sc 1"
510 : "+r" (r11), "+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6),
511 "+r" (r7)
512 : : EV_HCALL_CLOBBERS5
513 );
514
515 *bufsize = r4;
516
517 return r3;
518}
519
520
521#define FH_VCPU_RUN 0
522#define FH_VCPU_IDLE 1
523#define FH_VCPU_NAP 2
524
525/**
526 * fh_get_core_state - get the state of a vcpu
527 *
528 * @handle: handle of partition containing the vcpu
529 * @vcpu: vcpu number within the partition
530 * @state:the current state of the vcpu, see FH_VCPU_*
531 *
532 * Returns 0 for success, or an error code.
533 */
534static inline unsigned int fh_get_core_state(unsigned int handle,
535 unsigned int vcpu, unsigned int *state)
536{
537 register uintptr_t r11 __asm__("r11");
538 register uintptr_t r3 __asm__("r3");
539 register uintptr_t r4 __asm__("r4");
540
541 r11 = FH_HCALL_TOKEN(FH_GET_CORE_STATE);
542 r3 = handle;
543 r4 = vcpu;
544
545 __asm__ __volatile__ ("sc 1"
546 : "+r" (r11), "+r" (r3), "+r" (r4)
547 : : EV_HCALL_CLOBBERS2
548 );
549
550 *state = r4;
551 return r3;
552}
553
554/**
555 * fh_enter_nap - enter nap on a vcpu
556 *
557 * Note that though the API supports entering nap on a vcpu other
558 * than the caller, this may not be implmented and may return EINVAL.
559 *
560 * @handle: handle of partition containing the vcpu
561 * @vcpu: vcpu number within the partition
562 *
563 * Returns 0 for success, or an error code.
564 */
565static inline unsigned int fh_enter_nap(unsigned int handle, unsigned int vcpu)
566{
567 register uintptr_t r11 __asm__("r11");
568 register uintptr_t r3 __asm__("r3");
569 register uintptr_t r4 __asm__("r4");
570
571 r11 = FH_HCALL_TOKEN(FH_ENTER_NAP);
572 r3 = handle;
573 r4 = vcpu;
574
575 __asm__ __volatile__ ("sc 1"
576 : "+r" (r11), "+r" (r3), "+r" (r4)
577 : : EV_HCALL_CLOBBERS2
578 );
579
580 return r3;
581}
582
583/**
584 * fh_exit_nap - exit nap on a vcpu
585 * @handle: handle of partition containing the vcpu
586 * @vcpu: vcpu number within the partition
587 *
588 * Returns 0 for success, or an error code.
589 */
590static inline unsigned int fh_exit_nap(unsigned int handle, unsigned int vcpu)
591{
592 register uintptr_t r11 __asm__("r11");
593 register uintptr_t r3 __asm__("r3");
594 register uintptr_t r4 __asm__("r4");
595
596 r11 = FH_HCALL_TOKEN(FH_EXIT_NAP);
597 r3 = handle;
598 r4 = vcpu;
599
600 __asm__ __volatile__ ("sc 1"
601 : "+r" (r11), "+r" (r3), "+r" (r4)
602 : : EV_HCALL_CLOBBERS2
603 );
604
605 return r3;
606}
607/**
608 * fh_claim_device - claim a "claimable" shared device
609 * @handle: fsl,hv-device-handle of node to claim
610 *
611 * Returns 0 for success, or an error code.
612 */
613static inline unsigned int fh_claim_device(unsigned int handle)
614{
615 register uintptr_t r11 __asm__("r11");
616 register uintptr_t r3 __asm__("r3");
617
618 r11 = FH_HCALL_TOKEN(FH_CLAIM_DEVICE);
619 r3 = handle;
620
621 __asm__ __volatile__ ("sc 1"
622 : "+r" (r11), "+r" (r3)
623 : : EV_HCALL_CLOBBERS1
624 );
625
626 return r3;
627}
628
629/**
630 * Run deferred DMA disabling on a partition's private devices
631 *
632 * This applies to devices which a partition owns either privately,
633 * or which are claimable and still actively owned by that partition,
634 * and which do not have the no-dma-disable property.
635 *
636 * @handle: partition (must be stopped) whose DMA is to be disabled
637 *
638 * Returns 0 for success, or an error code.
639 */
640static inline unsigned int fh_partition_stop_dma(unsigned int handle)
641{
642 register uintptr_t r11 __asm__("r11");
643 register uintptr_t r3 __asm__("r3");
644
645 r11 = FH_HCALL_TOKEN(FH_PARTITION_STOP_DMA);
646 r3 = handle;
647
648 __asm__ __volatile__ ("sc 1"
649 : "+r" (r11), "+r" (r3)
650 : : EV_HCALL_CLOBBERS1
651 );
652
653 return r3;
654}
655#endif
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-26 07:28:26 -0500