Soren Brinkmann | c828440 | 2016-03-06 20:16:27 -0800 | [diff] [blame] | 1 | /* |
Wendy Liang | e8ffe79 | 2017-09-06 09:39:55 -0700 | [diff] [blame] | 2 | * Copyright (c) 2013-2017, ARM Limited and Contributors. All rights reserved. |
Soren Brinkmann | c828440 | 2016-03-06 20:16:27 -0800 | [diff] [blame] | 3 | * |
dp-arm | 82cb2c1 | 2017-05-03 09:38:09 +0100 | [diff] [blame] | 4 | * SPDX-License-Identifier: BSD-3-Clause |
Soren Brinkmann | c828440 | 2016-03-06 20:16:27 -0800 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | /* Top level SMC handler for SiP calls. Dispatch PM calls to PM SMC handler. */ |
| 8 | |
| 9 | #include <runtime_svc.h> |
| 10 | #include <uuid.h> |
Wendy Liang | e8ffe79 | 2017-09-06 09:39:55 -0700 | [diff] [blame] | 11 | #include "ipi_mailbox_svc.h" |
Soren Brinkmann | c828440 | 2016-03-06 20:16:27 -0800 | [diff] [blame] | 12 | #include "pm_svc_main.h" |
Wendy Liang | e8ffe79 | 2017-09-06 09:39:55 -0700 | [diff] [blame] | 13 | #include "zynqmp_ipi.h" |
Soren Brinkmann | c828440 | 2016-03-06 20:16:27 -0800 | [diff] [blame] | 14 | |
| 15 | /* SMC function IDs for SiP Service queries */ |
| 16 | #define ZYNQMP_SIP_SVC_CALL_COUNT 0x8200ff00 |
| 17 | #define ZYNQMP_SIP_SVC_UID 0x8200ff01 |
| 18 | #define ZYNQMP_SIP_SVC_VERSION 0x8200ff03 |
| 19 | |
| 20 | /* SiP Service Calls version numbers */ |
| 21 | #define SIP_SVC_VERSION_MAJOR 0 |
| 22 | #define SIP_SVC_VERSION_MINOR 1 |
| 23 | |
Wendy Liang | e8ffe79 | 2017-09-06 09:39:55 -0700 | [diff] [blame] | 24 | /* These macros are used to identify PM, IPI calls from the SMC function ID */ |
Soren Brinkmann | c828440 | 2016-03-06 20:16:27 -0800 | [diff] [blame] | 25 | #define PM_FID_MASK 0xf000u |
| 26 | #define PM_FID_VALUE 0u |
Wendy Liang | e8ffe79 | 2017-09-06 09:39:55 -0700 | [diff] [blame] | 27 | #define IPI_FID_VALUE 0x1000u |
Soren Brinkmann | c828440 | 2016-03-06 20:16:27 -0800 | [diff] [blame] | 28 | #define is_pm_fid(_fid) (((_fid) & PM_FID_MASK) == PM_FID_VALUE) |
Wendy Liang | e8ffe79 | 2017-09-06 09:39:55 -0700 | [diff] [blame] | 29 | #define is_ipi_fid(_fid) (((_fid) & PM_FID_MASK) == IPI_FID_VALUE) |
Soren Brinkmann | c828440 | 2016-03-06 20:16:27 -0800 | [diff] [blame] | 30 | |
| 31 | /* SiP Service UUID */ |
Roberto Vargas | 0336486 | 2018-04-26 13:36:53 +0100 | [diff] [blame] | 32 | DEFINE_SVC_UUID2(zynqmp_sip_uuid, |
| 33 | 0x5c9b1b2a, 0x0586, 0x2340, 0xa6, 0x1b, |
| 34 | 0xb9, 0x25, 0x82, 0x2d, 0xe3, 0xa5); |
Soren Brinkmann | c828440 | 2016-03-06 20:16:27 -0800 | [diff] [blame] | 35 | |
| 36 | /** |
| 37 | * sip_svc_setup() - Setup SiP Service |
| 38 | * |
| 39 | * Invokes PM setup |
| 40 | */ |
| 41 | static int32_t sip_svc_setup(void) |
| 42 | { |
| 43 | /* PM implementation as SiP Service */ |
| 44 | pm_setup(); |
| 45 | |
| 46 | return 0; |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * sip_svc_smc_handler() - Top-level SiP Service SMC handler |
| 51 | * |
| 52 | * Handler for all SiP SMC calls. Handles standard SIP requests |
| 53 | * and calls PM SMC handler if the call is for a PM-API function. |
| 54 | */ |
Masahiro Yamada | 57d1e5f | 2018-04-19 01:18:48 +0900 | [diff] [blame] | 55 | uintptr_t sip_svc_smc_handler(uint32_t smc_fid, |
| 56 | u_register_t x1, |
| 57 | u_register_t x2, |
| 58 | u_register_t x3, |
| 59 | u_register_t x4, |
| 60 | void *cookie, |
| 61 | void *handle, |
| 62 | u_register_t flags) |
Soren Brinkmann | c828440 | 2016-03-06 20:16:27 -0800 | [diff] [blame] | 63 | { |
| 64 | /* Let PM SMC handler deal with PM-related requests */ |
| 65 | if (is_pm_fid(smc_fid)) { |
| 66 | return pm_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, |
| 67 | flags); |
| 68 | } |
| 69 | |
Wendy Liang | e8ffe79 | 2017-09-06 09:39:55 -0700 | [diff] [blame] | 70 | /* Let IPI SMC handler deal with IPI-related requests */ |
| 71 | if (is_ipi_fid(smc_fid)) { |
| 72 | return ipi_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, |
| 73 | flags); |
| 74 | } |
| 75 | |
Soren Brinkmann | c828440 | 2016-03-06 20:16:27 -0800 | [diff] [blame] | 76 | switch (smc_fid) { |
| 77 | case ZYNQMP_SIP_SVC_CALL_COUNT: |
| 78 | /* PM functions + default functions */ |
| 79 | SMC_RET1(handle, PM_API_MAX + 2); |
| 80 | |
| 81 | case ZYNQMP_SIP_SVC_UID: |
| 82 | SMC_UUID_RET(handle, zynqmp_sip_uuid); |
| 83 | |
| 84 | case ZYNQMP_SIP_SVC_VERSION: |
| 85 | SMC_RET2(handle, SIP_SVC_VERSION_MAJOR, SIP_SVC_VERSION_MINOR); |
| 86 | |
| 87 | default: |
| 88 | WARN("Unimplemented SiP Service Call: 0x%x\n", smc_fid); |
| 89 | SMC_RET1(handle, SMC_UNK); |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | /* Register PM Service Calls as runtime service */ |
| 94 | DECLARE_RT_SVC( |
| 95 | sip_svc, |
| 96 | OEN_SIP_START, |
| 97 | OEN_SIP_END, |
| 98 | SMC_TYPE_FAST, |
| 99 | sip_svc_setup, |
| 100 | sip_svc_smc_handler); |