| Sandrine Bailleux | 798140d | 2014-07-17 16:06:39 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are met: |
| 6 | * |
| 7 | * Redistributions of source code must retain the above copyright notice, this |
| 8 | * list of conditions and the following disclaimer. |
| 9 | * |
| 10 | * Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * Neither the name of ARM nor the names of its contributors may be used |
| 15 | * to endorse or promote products derived from this software without specific |
| 16 | * prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| 22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 28 | * POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #ifndef __SCPI_H__ |
| 32 | #define __SCPI_H__ |
| 33 | |
| 34 | #include <stddef.h> |
| 35 | #include <stdint.h> |
| 36 | |
| 37 | extern void *scpi_secure_message_start(void); |
| 38 | extern void scpi_secure_message_send(unsigned command, size_t size); |
| 39 | extern unsigned scpi_secure_message_receive(void **message_out, size_t *size_out); |
| 40 | extern void scpi_secure_message_end(void); |
| 41 | |
| 42 | |
| 43 | enum { |
| 44 | SCP_OK = 0, /* Success */ |
| 45 | SCP_E_PARAM, /* Invalid parameter(s) */ |
| 46 | SCP_E_ALIGN, /* Invalid alignment */ |
| 47 | SCP_E_SIZE, /* Invalid size */ |
| 48 | SCP_E_HANDLER, /* Invalid handler or callback */ |
| 49 | SCP_E_ACCESS, /* Invalid access or permission denied */ |
| 50 | SCP_E_RANGE, /* Value out of range */ |
| 51 | SCP_E_TIMEOUT, /* Time out has ocurred */ |
| 52 | SCP_E_NOMEM, /* Invalid memory area or pointer */ |
| 53 | SCP_E_PWRSTATE, /* Invalid power state */ |
| 54 | SCP_E_SUPPORT, /* Feature not supported or disabled */ |
| 55 | }; |
| 56 | |
| 57 | typedef uint32_t scpi_status_t; |
| 58 | |
| 59 | typedef enum { |
| 60 | SCPI_CMD_SCP_READY = 0x01, |
| 61 | SCPI_CMD_SET_CSS_POWER_STATE = 0x04, |
| 62 | } scpi_command_t; |
| 63 | |
| 64 | typedef enum { |
| 65 | scpi_power_on = 0, |
| 66 | scpi_power_retention = 1, |
| 67 | scpi_power_off = 3, |
| 68 | } scpi_power_state_t; |
| 69 | |
| 70 | extern int scpi_wait_ready(void); |
| 71 | extern void scpi_set_css_power_state(unsigned mpidr, scpi_power_state_t cpu_state, |
| 72 | scpi_power_state_t cluster_state, scpi_power_state_t css_state); |
| 73 | |
| 74 | #endif /* __SCPI_H__ */ |