blob: f6240f3345ba9ed496e5fd33ab8b4c4dbef98b3a [file] [log] [blame]
Michal Simek91794362022-08-31 16:45:14 +02001/*
Michal Simek2a47faa2023-04-14 08:43:51 +02002 * Copyright (c) 2018-2019, Arm Limited and Contributors. All rights reserved.
Michal Simek91794362022-08-31 16:45:14 +02003 * Copyright (c) 2018-2022, Xilinx, Inc. All rights reserved.
Michal Simek01297072023-04-25 14:14:06 +02004 * Copyright (c) 2022, Advanced Micro Devices, Inc. All rights reserved.
Michal Simek91794362022-08-31 16:45:14 +02005 *
6 * SPDX-License-Identifier: BSD-3-Clause
7 */
8
9/* Top level SMC handler for SiP calls. Dispatch PM calls to PM SMC handler. */
10
Michal Simekdc708ac2022-09-19 13:52:54 +020011#include <errno.h>
Michal Simek6e45f942023-02-15 12:39:22 +010012#include <inttypes.h>
Michal Simekdc708ac2022-09-19 13:52:54 +020013
Michal Simek91794362022-08-31 16:45:14 +020014#include <common/debug.h>
15#include <common/runtime_svc.h>
16#include <tools_share/uuid.h>
17
Michal Simekaa5443e2022-09-19 14:04:55 +020018#include "ipi_mailbox_svc.h"
Michal Simekdc708ac2022-09-19 13:52:54 +020019#include "plat_private.h"
20#include "pm_svc_main.h"
21
Michal Simek91794362022-08-31 16:45:14 +020022/* SMC function IDs for SiP Service queries */
23#define VERSAL_NET_SIP_SVC_CALL_COUNT (0x8200ff00U)
24#define VERSAL_NET_SIP_SVC_UID (0x8200ff01U)
25#define VERSAL_NET_SIP_SVC_VERSION (0x8200ff03U)
26
27/* SiP Service Calls version numbers */
28#define SIP_SVC_VERSION_MAJOR (0U)
29#define SIP_SVC_VERSION_MINOR (1U)
30
Michal Simekaa5443e2022-09-19 14:04:55 +020031/* These macros are used to identify PM calls from the SMC function ID */
Michal Simek6e45f942023-02-15 12:39:22 +010032#define SIP_FID_MASK GENMASK(23, 16)
33#define XLNX_FID_MASK GENMASK(23, 12)
Michal Simekaa5443e2022-09-19 14:04:55 +020034#define PM_FID_VALUE 0u
35#define IPI_FID_VALUE 0x1000u
Michal Simek6e45f942023-02-15 12:39:22 +010036#define is_pm_fid(_fid) (((_fid) & XLNX_FID_MASK) == PM_FID_VALUE)
37#define is_ipi_fid(_fid) (((_fid) & XLNX_FID_MASK) == IPI_FID_VALUE)
Michal Simekaa5443e2022-09-19 14:04:55 +020038
Michal Simek91794362022-08-31 16:45:14 +020039/* SiP Service UUID */
40DEFINE_SVC_UUID2(versal_net_sip_uuid,
41 0x80d4c25a, 0xebaf, 0x11eb, 0x94, 0x68,
42 0x0b, 0x4e, 0x3b, 0x8f, 0xc3, 0x60);
43
44/**
45 * sip_svc_setup() - Setup SiP Service
46 */
47static int32_t sip_svc_setup(void)
48{
Michal Simekdc708ac2022-09-19 13:52:54 +020049 return sip_svc_setup_init();
Michal Simek91794362022-08-31 16:45:14 +020050}
51
52/*
53 * sip_svc_smc_handler() - Top-level SiP Service SMC handler
54 *
55 * Handler for all SiP SMC calls. Handles standard SIP requests
56 * and calls PM SMC handler if the call is for a PM-API function.
57 */
58static uintptr_t sip_svc_smc_handler(uint32_t smc_fid,
59 u_register_t x1,
60 u_register_t x2,
61 u_register_t x3,
62 u_register_t x4,
63 void *cookie,
64 void *handle,
65 u_register_t flags)
66{
Michal Simek6e45f942023-02-15 12:39:22 +010067 VERBOSE("SMCID: 0x%08x, x1: 0x%016" PRIx64 ", x2: 0x%016" PRIx64 ", x3: 0x%016" PRIx64 ", x4: 0x%016" PRIx64 "\n",
68 smc_fid, x1, x2, x3, x4);
69
70 if (smc_fid & SIP_FID_MASK) {
71 WARN("SMC out of SiP assinged range: 0x%x\n", smc_fid);
72 SMC_RET1(handle, SMC_UNK);
73 }
74
Michal Simek91794362022-08-31 16:45:14 +020075 /* Let PM SMC handler deal with PM-related requests */
Michal Simekaa5443e2022-09-19 14:04:55 +020076 if (is_pm_fid(smc_fid)) {
77 return smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
78 flags);
79 }
80
81 /* Let IPI SMC handler deal with IPI-related requests if platform */
82 if (is_ipi_fid(smc_fid)) {
83 return ipi_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, flags);
84 }
85
86 /* Let PM SMC handler deal with PM-related requests */
Michal Simek91794362022-08-31 16:45:14 +020087 switch (smc_fid) {
88 case VERSAL_NET_SIP_SVC_CALL_COUNT:
89 /* PM functions + default functions */
90 SMC_RET1(handle, 2);
91
92 case VERSAL_NET_SIP_SVC_UID:
93 SMC_UUID_RET(handle, versal_net_sip_uuid);
94
95 case VERSAL_NET_SIP_SVC_VERSION:
96 SMC_RET2(handle, SIP_SVC_VERSION_MAJOR, SIP_SVC_VERSION_MINOR);
97
98 default:
99 WARN("Unimplemented SiP Service Call: 0x%x\n", smc_fid);
100 SMC_RET1(handle, SMC_UNK);
101 }
102}
103
104/* Register PM Service Calls as runtime service */
105DECLARE_RT_SVC(
106 sip_svc,
107 OEN_SIP_START,
108 OEN_SIP_END,
109 SMC_TYPE_FAST,
110 sip_svc_setup,
111 sip_svc_smc_handler);