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Siva Durga Prasad Paladugufe4af662018-09-25 18:44:58 +05301/*
Michal Simek2a47faa2023-04-14 08:43:51 +02002 * Copyright (c) 2018-2021, Arm Limited and Contributors. All rights reserved.
Siva Durga Prasad Paladugufe4af662018-09-25 18:44:58 +05303 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7/* Top level SMC handler for SiP calls. Dispatch PM calls to PM SMC handler. */
8
Michal Simek6e45f942023-02-15 12:39:22 +01009#include <inttypes.h>
10
Antonio Nino Diaze0f90632018-12-14 00:18:21 +000011#include <common/debug.h>
12#include <common/runtime_svc.h>
13#include <tools_share/uuid.h>
Wendy Lianga4494de2019-01-21 13:45:49 +053014
15#include "ipi_mailbox_svc.h"
Tejas Patel354fe572018-12-14 00:55:37 -080016#include "pm_svc_main.h"
Siva Durga Prasad Paladugufe4af662018-09-25 18:44:58 +053017
18/* SMC function IDs for SiP Service queries */
Abhyuday Godhasara589afa52021-08-11 06:15:13 -070019#define VERSAL_SIP_SVC_CALL_COUNT U(0x8200ff00)
20#define VERSAL_SIP_SVC_UID U(0x8200ff01)
21#define VERSAL_SIP_SVC_VERSION U(0x8200ff03)
Siva Durga Prasad Paladugufe4af662018-09-25 18:44:58 +053022
23/* SiP Service Calls version numbers */
Abhyuday Godhasara096f5cc2021-08-13 06:45:32 -070024#define SIP_SVC_VERSION_MAJOR U(0)
25#define SIP_SVC_VERSION_MINOR U(1)
Siva Durga Prasad Paladugufe4af662018-09-25 18:44:58 +053026
27/* These macros are used to identify PM calls from the SMC function ID */
Michal Simek6e45f942023-02-15 12:39:22 +010028#define SIP_FID_MASK GENMASK(23, 16)
29#define XLNX_FID_MASK GENMASK(23, 12)
Siva Durga Prasad Paladugufe4af662018-09-25 18:44:58 +053030#define PM_FID_VALUE 0u
Wendy Lianga4494de2019-01-21 13:45:49 +053031#define IPI_FID_VALUE 0x1000u
Michal Simek6e45f942023-02-15 12:39:22 +010032#define is_pm_fid(_fid) (((_fid) & XLNX_FID_MASK) == PM_FID_VALUE)
33#define is_ipi_fid(_fid) (((_fid) & XLNX_FID_MASK) == IPI_FID_VALUE)
Siva Durga Prasad Paladugufe4af662018-09-25 18:44:58 +053034
35/* SiP Service UUID */
36DEFINE_SVC_UUID2(versal_sip_uuid,
Abhyuday Godhasara096f5cc2021-08-13 06:45:32 -070037 0x2ab9e4ecU, 0x93b9U, 0x11e7U, 0xa0U, 0x19U,
38 0xdfU, 0xe0U, 0xdbU, 0xadU, 0x0aU, 0xe0U);
Siva Durga Prasad Paladugufe4af662018-09-25 18:44:58 +053039
40/**
41 * sip_svc_setup() - Setup SiP Service
42 *
43 * Invokes PM setup
44 */
45static int32_t sip_svc_setup(void)
46{
Tejas Patel354fe572018-12-14 00:55:37 -080047 /* PM implementation as SiP Service */
Abhyuday Godhasaraf435a142021-08-20 00:04:33 -070048 (void)pm_setup();
Tejas Patel354fe572018-12-14 00:55:37 -080049
Siva Durga Prasad Paladugufe4af662018-09-25 18:44:58 +053050 return 0;
51}
52
53/**
54 * sip_svc_smc_handler() - Top-level SiP Service SMC handler
55 *
56 * Handler for all SiP SMC calls. Handles standard SIP requests
57 * and calls PM SMC handler if the call is for a PM-API function.
58 */
59uintptr_t sip_svc_smc_handler(uint32_t smc_fid,
60 u_register_t x1,
61 u_register_t x2,
62 u_register_t x3,
63 u_register_t x4,
64 void *cookie,
65 void *handle,
66 u_register_t flags)
67{
Michal Simek6e45f942023-02-15 12:39:22 +010068 VERBOSE("SMCID: 0x%08x, x1: 0x%016" PRIx64 ", x2: 0x%016" PRIx64 ", x3: 0x%016" PRIx64 ", x4: 0x%016" PRIx64 "\n",
69 smc_fid, x1, x2, x3, x4);
70
71 if (smc_fid & SIP_FID_MASK) {
72 WARN("SMC out of SiP assinged range: 0x%x\n", smc_fid);
73 SMC_RET1(handle, SMC_UNK);
74 }
75
Siva Durga Prasad Paladugufe4af662018-09-25 18:44:58 +053076 /* Let PM SMC handler deal with PM-related requests */
Tejas Patel59c608a2019-01-09 04:10:29 -080077 if (is_pm_fid(smc_fid)) {
78 return pm_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
79 flags);
80 }
81
Wendy Lianga4494de2019-01-21 13:45:49 +053082 /* Let IPI SMC handler deal with IPI-related requests */
83 if (is_ipi_fid(smc_fid)) {
84 return ipi_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
85 flags);
86 }
87
Tejas Patel59c608a2019-01-09 04:10:29 -080088 /* Let PM SMC handler deal with PM-related requests */
Siva Durga Prasad Paladugufe4af662018-09-25 18:44:58 +053089 switch (smc_fid) {
90 case VERSAL_SIP_SVC_CALL_COUNT:
91 /* PM functions + default functions */
92 SMC_RET1(handle, 2);
93
94 case VERSAL_SIP_SVC_UID:
95 SMC_UUID_RET(handle, versal_sip_uuid);
96
97 case VERSAL_SIP_SVC_VERSION:
98 SMC_RET2(handle, SIP_SVC_VERSION_MAJOR, SIP_SVC_VERSION_MINOR);
99
100 default:
101 WARN("Unimplemented SiP Service Call: 0x%x\n", smc_fid);
102 SMC_RET1(handle, SMC_UNK);
103 }
104}
105
106/* Register PM Service Calls as runtime service */
107DECLARE_RT_SVC(
108 sip_svc,
109 OEN_SIP_START,
110 OEN_SIP_END,
111 SMC_TYPE_FAST,
112 sip_svc_setup,
113 sip_svc_smc_handler);