Tejas Patel | 9d09ff9 | 2019-01-08 01:46:35 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2019, Xilinx, Inc. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | /* |
| 8 | * Versal system level PM-API functions and communication with PMC via |
| 9 | * IPI interrupts |
| 10 | */ |
| 11 | |
| 12 | #include <pm_common.h> |
| 13 | #include <pm_ipi.h> |
| 14 | #include "pm_api_sys.h" |
| 15 | #include "pm_client.h" |
| 16 | |
| 17 | /********************************************************************* |
| 18 | * Target module IDs macros |
| 19 | ********************************************************************/ |
| 20 | #define LIBPM_MODULE_ID 0x2 |
| 21 | #define LOADER_MODULE_ID 0x7 |
| 22 | |
| 23 | /** |
| 24 | * Assigning of argument values into array elements. |
| 25 | */ |
| 26 | #define PM_PACK_PAYLOAD1(pl, mid, arg0) { \ |
| 27 | pl[0] = (uint32_t)((uint32_t)((arg0) & 0xFF) | (mid << 8)); \ |
| 28 | } |
| 29 | |
| 30 | /* PM API functions */ |
| 31 | |
| 32 | /** |
| 33 | * pm_get_api_version() - Get version number of PMC PM firmware |
| 34 | * @version Returns 32-bit version number of PMC Power Management Firmware |
| 35 | * |
| 36 | * @return Returns status, either success or error+reason |
| 37 | */ |
| 38 | enum pm_ret_status pm_get_api_version(unsigned int *version) |
| 39 | { |
| 40 | uint32_t payload[PAYLOAD_ARG_CNT]; |
| 41 | |
| 42 | /* Send request to the PMC */ |
| 43 | PM_PACK_PAYLOAD1(payload, LIBPM_MODULE_ID, PM_GET_API_VERSION); |
| 44 | return pm_ipi_send_sync(primary_proc, payload, version, 1); |
| 45 | } |