smccc.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause
    3  *
    4  * Copyright (c) 2018 Andrew Turner
    5  *
    6  * This software was developed by SRI International and the University of
    7  * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237
    8  * ("CTSRD"), as part of the DARPA CRASH research programme.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. 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  *
   19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  * $FreeBSD$
   32  */
   33 
   34 #ifndef _PSCI_SMCCC_H_
   35 #define _PSCI_SMCCC_H_
   36 
   37 #define SMCCC_VERSION_MAJOR(ver)        (((ver) >> 16) & 0x7fff)
   38 #define SMCCC_VERSION_MINOR(ver)        ((ver) & 0xffff)
   39 
   40 #define SMCCC_FUNC_ID(type, call_conv, range, func)     \
   41         (((type) << 31) |                               \
   42          ((call_conv) << 30) |                          \
   43          (((range) & 0x3f) << 24) |                             \
   44          ((func) & 0xffff))
   45 
   46 #define SMCCC_YIELDING_CALL     0
   47 #define SMCCC_FAST_CALL         1
   48 
   49 #define SMCCC_32BIT_CALL        0
   50 #define SMCCC_64BIT_CALL        1
   51 
   52 #define SMCCC_ARM_ARCH_CALLS            0
   53 #define SMCCC_CPU_SERVICE_CALLS         1
   54 #define SMCCC_SIP_SERVICE_CALLS         2
   55 #define SMCCC_OEM_SERVICE_CALLS         3
   56 #define SMCCC_STD_SECURE_SERVICE_CALLS  4
   57 #define SMCCC_STD_HYP_SERVICE_CALLS     5
   58 #define SMCCC_VENDOR_HYP_SERVICE_CALLS  6
   59 
   60 struct arm_smccc_res {
   61         register_t a0;
   62         register_t a1;
   63         register_t a2;
   64         register_t a3;
   65 };
   66 
   67 /*
   68  * Arm Architecture Calls.
   69  * These are documented in the document ARM DEN 0070A.
   70  */
   71 #define SMCCC_VERSION                                                   \
   72     SMCCC_FUNC_ID(SMCCC_FAST_CALL, SMCCC_32BIT_CALL, 0, 0)
   73 #define SMCCC_ARCH_FEATURES                                             \
   74     SMCCC_FUNC_ID(SMCCC_FAST_CALL, SMCCC_32BIT_CALL, 0, 1)
   75 #define SMCCC_ARCH_WORKAROUND_1                                         \
   76     SMCCC_FUNC_ID(SMCCC_FAST_CALL, SMCCC_32BIT_CALL, 0, 0x8000)
   77 #define SMCCC_ARCH_WORKAROUND_2                                         \
   78     SMCCC_FUNC_ID(SMCCC_FAST_CALL, SMCCC_32BIT_CALL, 0, 0x7fff)
   79 
   80 /* The return values from ARM DEN 0070A. */
   81 #define SMCCC_RET_SUCCESS               0
   82 #define SMCCC_RET_NOT_SUPPORTED         -1
   83 #define SMCCC_RET_NOT_REQUIRED          -2
   84 
   85 int32_t smccc_arch_features(uint32_t);
   86 int smccc_arch_workaround_1(void);
   87 int smccc_arch_workaround_2(int);
   88 
   89 int arm_smccc_smc(register_t, register_t, register_t, register_t, register_t,
   90     register_t, register_t, register_t, struct arm_smccc_res *res);
   91 int arm_smccc_hvc(register_t, register_t, register_t, register_t, register_t,
   92     register_t, register_t, register_t, struct arm_smccc_res *res);
   93 
   94 struct arm_smccc_1_2_regs {
   95         register_t a0;
   96         register_t a1;
   97         register_t a2;
   98         register_t a3;
   99         register_t a4;
  100         register_t a5;
  101         register_t a6;
  102         register_t a7;
  103         register_t a8;
  104         register_t a9;
  105         register_t a10;
  106         register_t a11;
  107         register_t a12;
  108         register_t a13;
  109         register_t a14;
  110         register_t a15;
  111         register_t a16;
  112         register_t a17;
  113 };
  114 
  115 int arm_smccc_1_2_hvc(const struct arm_smccc_1_2_regs *args,
  116     struct arm_smccc_1_2_regs *res);
  117 int arm_smccc_1_2_smc(const struct arm_smccc_1_2_regs *args,
  118     struct arm_smccc_1_2_regs *res);
  119 #endif /* _PSCI_SMCCC_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/dev/psci/smccc.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/psci/smccc.h