feat(versal-net): add support for IPI
Add support to send IPI to firmware.
Signed-off-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Akshay Belsare <Akshay.Belsare@amd.com>
Change-Id: I8cd54c05b6a726e0d398dfc1cdcc7f4cf09ba725
diff --git a/plat/xilinx/versal_net/aarch64/versal_net_common.c b/plat/xilinx/versal_net/aarch64/versal_net_common.c
index 416121c..46ebc3e 100644
--- a/plat/xilinx/versal_net/aarch64/versal_net_common.c
+++ b/plat/xilinx/versal_net/aarch64/versal_net_common.c
@@ -12,6 +12,7 @@
#include <lib/mmio.h>
#include <lib/xlat_tables/xlat_tables_v2.h>
#include <plat/common/platform.h>
+#include <plat_ipi.h>
#include <plat_private.h>
#include <versal_net_def.h>
@@ -28,6 +29,7 @@
MAP_REGION_FLAT(DEVICE1_BASE, DEVICE1_SIZE, MT_DEVICE | MT_RW | MT_SECURE),
MAP_REGION_FLAT(DEVICE2_BASE, DEVICE2_SIZE, MT_DEVICE | MT_RW | MT_SECURE),
MAP_REGION_FLAT(CRF_BASE, CRF_SIZE, MT_DEVICE | MT_RW | MT_SECURE),
+ MAP_REGION_FLAT(IPI_BASE, IPI_SIZE, MT_DEVICE | MT_RW | MT_SECURE),
{ 0 }
};
diff --git a/plat/xilinx/versal_net/include/plat_ipi.h b/plat/xilinx/versal_net/include/plat_ipi.h
new file mode 100644
index 0000000..5255f8f
--- /dev/null
+++ b/plat/xilinx/versal_net/include/plat_ipi.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2022, Xilinx, Inc. All rights reserved.
+ * Copyright (C) 2022, Advanced Micro Devices, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/* Versal IPI management enums and defines */
+
+#ifndef PLAT_IPI_H
+#define PLAT_IPI_H
+
+#include <stdint.h>
+
+#include <ipi.h>
+
+/*********************************************************************
+ * IPI agent IDs macros
+ ********************************************************************/
+#define IPI_ID_PMC 1U
+#define IPI_ID_APU 2U
+#define IPI_ID_RPU0 3U
+#define IPI_ID_RPU1 4U
+#define IPI_ID_3 5U
+#define IPI_ID_4 6U
+#define IPI_ID_5 7U
+#define IPI_ID_MAX 8U
+
+/*********************************************************************
+ * IPI message buffers
+ ********************************************************************/
+#define IPI_BUFFER_BASEADDR (0xEB3F0000U)
+
+#define IPI_BUFFER_APU_BASE (IPI_BUFFER_BASEADDR + 0x400U)
+#define IPI_BUFFER_PMC_BASE (IPI_BUFFER_BASEADDR + 0x200U)
+
+#define IPI_BUFFER_TARGET_APU_OFFSET 0x80U
+#define IPI_BUFFER_TARGET_PMC_OFFSET 0x40U
+
+#define IPI_BUFFER_LOCAL_BASE IPI_BUFFER_APU_BASE
+#define IPI_BUFFER_REMOTE_BASE IPI_BUFFER_PMC_BASE
+
+#define IPI_BUFFER_TARGET_LOCAL_OFFSET IPI_BUFFER_TARGET_APU_OFFSET
+#define IPI_BUFFER_TARGET_REMOTE_OFFSET IPI_BUFFER_TARGET_PMC_OFFSET
+
+#define IPI_BUFFER_MAX_WORDS 8
+
+#define IPI_BUFFER_REQ_OFFSET 0x0U
+#define IPI_BUFFER_RESP_OFFSET 0x20U
+
+/*********************************************************************
+ * Platform specific IPI API declarations
+ ********************************************************************/
+
+/* Configure IPI table for versal_net */
+void versal_net_ipi_config_table_init(void);
+
+#endif /* PLAT_IPI_H */
diff --git a/plat/xilinx/versal_net/include/versal_net_def.h b/plat/xilinx/versal_net/include/versal_net_def.h
index c2dab92..9b80683 100644
--- a/plat/xilinx/versal_net/include/versal_net_def.h
+++ b/plat/xilinx/versal_net/include/versal_net_def.h
@@ -77,6 +77,8 @@
#define DEVICE2_SIZE U(0x01000000)
#define CRF_BASE U(0xFD1A0000)
#define CRF_SIZE U(0x00600000)
+#define IPI_BASE U(0xEB300000)
+#define IPI_SIZE U(0x00100000)
/* CRL */
#define VERSAL_NET_CRL U(0xEB5E0000)
diff --git a/plat/xilinx/versal_net/platform.mk b/plat/xilinx/versal_net/platform.mk
index 32594c7..f361dfe 100644
--- a/plat/xilinx/versal_net/platform.mk
+++ b/plat/xilinx/versal_net/platform.mk
@@ -46,6 +46,7 @@
PLAT_INCLUDES := -Iinclude/plat/arm/common/ \
-Iplat/xilinx/common/include/ \
+ -Iplat/xilinx/common/ipi_mailbox_service/ \
-I${PLAT_PATH}/include/ \
-Iplat/xilinx/versal/pm_service/
@@ -70,6 +71,8 @@
plat/common/plat_psci_common.c \
${PLAT_PATH}/plat_psci.c \
plat/xilinx/common/plat_startup.c \
+ plat/xilinx/common/ipi.c \
+ plat/xilinx/common/ipi_mailbox_service/ipi_mailbox_svc.c \
${PLAT_PATH}/bl31_versal_net_setup.c \
${PLAT_PATH}/plat_topology.c \
common/fdt_fixup.c \
diff --git a/plat/xilinx/versal_net/sip_svc_setup.c b/plat/xilinx/versal_net/sip_svc_setup.c
index 9a8d519..0e3940f 100644
--- a/plat/xilinx/versal_net/sip_svc_setup.c
+++ b/plat/xilinx/versal_net/sip_svc_setup.c
@@ -14,6 +14,7 @@
#include <common/runtime_svc.h>
#include <tools_share/uuid.h>
+#include "ipi_mailbox_svc.h"
#include "plat_private.h"
#include "pm_svc_main.h"
@@ -26,6 +27,13 @@
#define SIP_SVC_VERSION_MAJOR (0U)
#define SIP_SVC_VERSION_MINOR (1U)
+/* These macros are used to identify PM calls from the SMC function ID */
+#define PM_FID_MASK 0xf000u
+#define PM_FID_VALUE 0u
+#define IPI_FID_VALUE 0x1000u
+#define is_pm_fid(_fid) (((_fid) & PM_FID_MASK) == PM_FID_VALUE)
+#define is_ipi_fid(_fid) (((_fid) & PM_FID_MASK) == IPI_FID_VALUE)
+
/* SiP Service UUID */
DEFINE_SVC_UUID2(versal_net_sip_uuid,
0x80d4c25a, 0xebaf, 0x11eb, 0x94, 0x68,
@@ -55,6 +63,17 @@
u_register_t flags)
{
/* Let PM SMC handler deal with PM-related requests */
+ if (is_pm_fid(smc_fid)) {
+ return smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
+ flags);
+ }
+
+ /* Let IPI SMC handler deal with IPI-related requests if platform */
+ if (is_ipi_fid(smc_fid)) {
+ return ipi_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, flags);
+ }
+
+ /* Let PM SMC handler deal with PM-related requests */
switch (smc_fid) {
case VERSAL_NET_SIP_SVC_CALL_COUNT:
/* PM functions + default functions */