1 /*- 2 * Copyright (c) 2013, 2014 Robin Randhawa 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _MACHINE_PSCI_H_ 30 #define _MACHINE_PSCI_H_ 31 32 #include <sys/types.h> 33 34 typedef int (*psci_initfn_t)(device_t dev); 35 typedef int (*psci_callfn_t)(register_t, register_t, register_t, register_t); 36 37 extern int psci_present; 38 39 void psci_reset(void); 40 int psci_cpu_on(unsigned long, unsigned long, unsigned long); 41 int psci_hvc_despatch(register_t, register_t, register_t, register_t); 42 int psci_smc_despatch(register_t, register_t, register_t, register_t); 43 44 int psci_get_version(void); 45 46 /* 47 * PSCI return codes. 48 */ 49 #define PSCI_RETVAL_SUCCESS 0 50 #define PSCI_RETVAL_NOT_SUPPORTED -1 51 #define PSCI_RETVAL_INVALID_PARAMS -2 52 #define PSCI_RETVAL_DENIED -3 53 #define PSCI_RETVAL_ALREADY_ON -4 54 #define PSCI_RETVAL_ON_PENDING -5 55 #define PSCI_RETVAL_INTERNAL_FAILURE -6 56 #define PSCI_RETVAL_NOT_PRESENT -7 57 #define PSCI_RETVAL_DISABLED -8 58 /* 59 * Used to signal PSCI is not available, e.g. to start a CPU. 60 */ 61 #define PSCI_MISSING 1 62 63 /* 64 * PSCI function codes (as per PSCI v0.2). 65 */ 66 #ifdef __aarch64__ 67 #define PSCI_FNID_VERSION 0x84000000 68 #define PSCI_FNID_CPU_SUSPEND 0xc4000001 69 #define PSCI_FNID_CPU_OFF 0x84000002 70 #define PSCI_FNID_CPU_ON 0xc4000003 71 #define PSCI_FNID_AFFINITY_INFO 0xc4000004 72 #define PSCI_FNID_MIGRATE 0xc4000005 73 #define PSCI_FNID_MIGRATE_INFO_TYPE 0x84000006 74 #define PSCI_FNID_MIGRATE_INFO_UP_CPU 0xc4000007 75 #define PSCI_FNID_SYSTEM_OFF 0x84000008 76 #define PSCI_FNID_SYSTEM_RESET 0x84000009 77 #else 78 #define PSCI_FNID_VERSION 0x84000000 79 #define PSCI_FNID_CPU_SUSPEND 0x84000001 80 #define PSCI_FNID_CPU_OFF 0x84000002 81 #define PSCI_FNID_CPU_ON 0x84000003 82 #define PSCI_FNID_AFFINITY_INFO 0x84000004 83 #define PSCI_FNID_MIGRATE 0x84000005 84 #define PSCI_FNID_MIGRATE_INFO_TYPE 0x84000006 85 #define PSCI_FNID_MIGRATE_INFO_UP_CPU 0x84000007 86 #define PSCI_FNID_SYSTEM_OFF 0x84000008 87 #define PSCI_FNID_SYSTEM_RESET 0x84000009 88 #endif 89 90 #define PSCI_VER_MAJOR(v) (((v) >> 16) & 0xFF) 91 #define PSCI_VER_MINOR(v) ((v) & 0xFF) 92 93 enum psci_fn { 94 PSCI_FN_VERSION, 95 PSCI_FN_CPU_SUSPEND, 96 PSCI_FN_CPU_OFF, 97 PSCI_FN_CPU_ON, 98 PSCI_FN_AFFINITY_INFO, 99 PSCI_FN_MIGRATE, 100 PSCI_FN_MIGRATE_INFO_TYPE, 101 PSCI_FN_MIGRATE_INFO_UP_CPU, 102 PSCI_FN_SYSTEM_OFF, 103 PSCI_FN_SYSTEM_RESET, 104 PSCI_FN_MAX 105 }; 106 107 #endif /* _MACHINE_PSCI_H_ */ 108