refactor(xilinx): move versal files to common place
Moved necessary files to common place so that it can be used for
Versal NET.
Signed-off-by: Jay Buddhabhatti <jay.buddhabhatti@amd.com>
Change-Id: I611fa849207b082e6599acfb65c55d27b9c99435
diff --git a/plat/xilinx/common/pm_service/pm_svc_main.c b/plat/xilinx/common/pm_service/pm_svc_main.c
new file mode 100644
index 0000000..6fd7f0d
--- /dev/null
+++ b/plat/xilinx/common/pm_service/pm_svc_main.c
@@ -0,0 +1,410 @@
+/*
+ * Copyright (c) 2019-2022, Xilinx, Inc. All rights reserved.
+ * Copyright (c) 2022-2023, Advanced Micro Devices, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * Top-level SMC handler for Versal power management calls and
+ * IPI setup functions for communication with PMC.
+ */
+
+#include <errno.h>
+#include <plat_private.h>
+#include <stdbool.h>
+#include <common/runtime_svc.h>
+#include <plat/common/platform.h>
+#include "pm_api_sys.h"
+#include "pm_client.h"
+#include "pm_ipi.h"
+#include <drivers/arm/gicv3.h>
+#include "../drivers/arm/gic/v3/gicv3_private.h"
+
+#define MODE 0x80000000U
+
+#define XSCUGIC_SGIR_EL1_INITID_SHIFT 24U
+#define INVALID_SGI 0xFFU
+#define PM_INIT_SUSPEND_CB (30U)
+#define PM_NOTIFY_CB (32U)
+DEFINE_RENAME_SYSREG_RW_FUNCS(icc_asgi1r_el1, S3_0_C12_C11_6)
+
+/* pm_up = true - UP, pm_up = false - DOWN */
+static bool pm_up;
+static uint32_t sgi = (uint32_t)INVALID_SGI;
+
+static void notify_os(void)
+{
+ int32_t cpu;
+ uint32_t reg;
+
+ cpu = plat_my_core_pos() + 1U;
+
+ reg = (cpu | (sgi << XSCUGIC_SGIR_EL1_INITID_SHIFT));
+ write_icc_asgi1r_el1(reg);
+}
+
+static uint64_t ipi_fiq_handler(uint32_t id, uint32_t flags, void *handle,
+ void *cookie)
+{
+ uint32_t payload[4] = {0};
+ enum pm_ret_status ret;
+
+ VERBOSE("Received IPI FIQ from firmware\n");
+
+ (void)plat_ic_acknowledge_interrupt();
+
+ ret = pm_get_callbackdata(payload, ARRAY_SIZE(payload), 0, 0);
+ if (ret != PM_RET_SUCCESS) {
+ payload[0] = ret;
+ }
+
+ switch (payload[0]) {
+ case PM_INIT_SUSPEND_CB:
+ case PM_NOTIFY_CB:
+ if (sgi != INVALID_SGI) {
+ notify_os();
+ }
+ break;
+ case PM_RET_ERROR_INVALID_CRC:
+ pm_ipi_irq_clear(primary_proc);
+ WARN("Invalid CRC in the payload\n");
+ break;
+
+ default:
+ pm_ipi_irq_clear(primary_proc);
+ WARN("Invalid IPI payload\n");
+ break;
+ }
+
+ /* Clear FIQ */
+ plat_ic_end_of_interrupt(id);
+
+ return 0;
+}
+
+/**
+ * pm_register_sgi() - PM register the IPI interrupt
+ *
+ * @sgi - SGI number to be used for communication.
+ * @reset - Reset to invalid SGI when reset=1.
+ * @return On success, the initialization function must return 0.
+ * Any other return value will cause the framework to ignore
+ * the service
+ *
+ * Update the SGI number to be used.
+ *
+ */
+int32_t pm_register_sgi(uint32_t sgi_num, uint32_t reset)
+{
+ if (reset == 1U) {
+ sgi = INVALID_SGI;
+ return 0;
+ }
+
+ if (sgi != INVALID_SGI) {
+ return -EBUSY;
+ }
+
+ if (sgi_num >= GICV3_MAX_SGI_TARGETS) {
+ return -EINVAL;
+ }
+
+ sgi = (uint32_t)sgi_num;
+ return 0;
+}
+
+/**
+ * pm_setup() - PM service setup
+ *
+ * @return On success, the initialization function must return 0.
+ * Any other return value will cause the framework to ignore
+ * the service
+ *
+ * Initialization functions for Versal power management for
+ * communicaton with PMC.
+ *
+ * Called from sip_svc_setup initialization function with the
+ * rt_svc_init signature.
+ */
+int32_t pm_setup(void)
+{
+ int32_t ret = 0;
+
+ pm_ipi_init(primary_proc);
+ pm_up = true;
+
+ /*
+ * Enable IPI IRQ
+ * assume the rich OS is OK to handle callback IRQs now.
+ * Even if we were wrong, it would not enable the IRQ in
+ * the GIC.
+ */
+ pm_ipi_irq_enable(primary_proc);
+
+ ret = request_intr_type_el3(PLAT_VERSAL_IPI_IRQ, ipi_fiq_handler);
+ if (ret != 0) {
+ WARN("BL31: registering IPI interrupt failed\n");
+ }
+
+ gicd_write_irouter(gicv3_driver_data->gicd_base, PLAT_VERSAL_IPI_IRQ, MODE);
+ return ret;
+}
+
+/**
+ * eemi_for_compatibility() - EEMI calls handler for deprecated calls
+ *
+ * @return - If EEMI API found then, uintptr_t type address, else 0
+ *
+ * Some EEMI API's use case needs to be changed in Linux driver, so they
+ * can take advantage of common EEMI handler in TF-A. As of now the old
+ * implementation of these APIs are required to maintain backward compatibility
+ * until their use case in linux driver changes.
+ */
+static uintptr_t eemi_for_compatibility(uint32_t api_id, uint32_t *pm_arg,
+ void *handle, uint32_t security_flag)
+{
+ enum pm_ret_status ret;
+
+ switch (api_id) {
+
+ case PM_IOCTL:
+ {
+ uint32_t value = 0U;
+
+ ret = pm_api_ioctl(pm_arg[0], pm_arg[1], pm_arg[2],
+ pm_arg[3], pm_arg[4],
+ &value, security_flag);
+ if (ret == PM_RET_ERROR_NOTSUPPORTED)
+ return (uintptr_t)0;
+
+ SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32U);
+ }
+
+ case PM_QUERY_DATA:
+ {
+ uint32_t data[PAYLOAD_ARG_CNT] = { 0 };
+
+ ret = pm_query_data(pm_arg[0], pm_arg[1], pm_arg[2],
+ pm_arg[3], data, security_flag);
+
+ SMC_RET2(handle, (uint64_t)ret | ((uint64_t)data[0] << 32U),
+ (uint64_t)data[1] | ((uint64_t)data[2] << 32U));
+ }
+
+ case PM_FEATURE_CHECK:
+ {
+ uint32_t result[PAYLOAD_ARG_CNT] = {0U};
+
+ ret = pm_feature_check(pm_arg[0], result, security_flag);
+ SMC_RET2(handle, (uint64_t)ret | ((uint64_t)result[0] << 32U),
+ (uint64_t)result[1] | ((uint64_t)result[2] << 32U));
+ }
+
+ case PM_LOAD_PDI:
+ {
+ ret = pm_load_pdi(pm_arg[0], pm_arg[1], pm_arg[2],
+ security_flag);
+ SMC_RET1(handle, (uint64_t)ret);
+ }
+
+ default:
+ return (uintptr_t)0;
+ }
+}
+
+/**
+ * eemi_psci_debugfs_handler() - EEMI API invoked from PSCI
+ *
+ * These EEMI APIs performs CPU specific power management tasks.
+ * These EEMI APIs are invoked either from PSCI or from debugfs in kernel.
+ * These calls require CPU specific processing before sending IPI request to
+ * Platform Management Controller. For example enable/disable CPU specific
+ * interrupts. This requires separate handler for these calls and may not be
+ * handled using common eemi handler
+ */
+static uintptr_t eemi_psci_debugfs_handler(uint32_t api_id, uint32_t *pm_arg,
+ void *handle, uint32_t security_flag)
+{
+ enum pm_ret_status ret;
+
+ switch (api_id) {
+
+ case PM_SELF_SUSPEND:
+ ret = pm_self_suspend(pm_arg[0], pm_arg[1], pm_arg[2],
+ pm_arg[3], security_flag);
+ SMC_RET1(handle, (u_register_t)ret);
+
+ case PM_FORCE_POWERDOWN:
+ ret = pm_force_powerdown(pm_arg[0], pm_arg[1], security_flag);
+ SMC_RET1(handle, (u_register_t)ret);
+
+ case PM_REQ_SUSPEND:
+ ret = pm_req_suspend(pm_arg[0], pm_arg[1], pm_arg[2],
+ pm_arg[3], security_flag);
+ SMC_RET1(handle, (u_register_t)ret);
+
+ case PM_ABORT_SUSPEND:
+ ret = pm_abort_suspend(pm_arg[0], security_flag);
+ SMC_RET1(handle, (u_register_t)ret);
+
+ case PM_SYSTEM_SHUTDOWN:
+ ret = pm_system_shutdown(pm_arg[0], pm_arg[1], security_flag);
+ SMC_RET1(handle, (u_register_t)ret);
+
+ default:
+ return (uintptr_t)0;
+ }
+}
+
+/**
+ * TF_A_specific_handler() - SMC handler for TF-A specific functionality
+ *
+ * These EEMI calls performs functionality that does not require
+ * IPI transaction. The handler ends in TF-A and returns requested data to
+ * kernel from TF-A.
+ */
+static uintptr_t TF_A_specific_handler(uint32_t api_id, uint32_t *pm_arg,
+ void *handle, uint32_t security_flag)
+{
+ switch (api_id) {
+
+ case TF_A_PM_REGISTER_SGI:
+ {
+ int32_t ret;
+
+ ret = pm_register_sgi(pm_arg[0], pm_arg[1]);
+ if (ret != 0) {
+ SMC_RET1(handle, (uint32_t)PM_RET_ERROR_ARGS);
+ }
+
+ SMC_RET1(handle, (uint32_t)PM_RET_SUCCESS);
+ }
+
+ case PM_GET_CALLBACK_DATA:
+ {
+ uint32_t result[4] = {0};
+ enum pm_ret_status ret;
+
+ ret = pm_get_callbackdata(result, ARRAY_SIZE(result), security_flag, 1U);
+ if (ret != 0) {
+ result[0] = ret;
+ }
+
+ SMC_RET2(handle,
+ (uint64_t)result[0] | ((uint64_t)result[1] << 32U),
+ (uint64_t)result[2] | ((uint64_t)result[3] << 32U));
+ }
+
+ case PM_GET_TRUSTZONE_VERSION:
+ SMC_RET1(handle, (uint64_t)PM_RET_SUCCESS |
+ ((uint64_t)TZ_VERSION << 32U));
+
+ default:
+ return (uintptr_t)0;
+ }
+}
+
+/**
+ * eemi_handler() - Prepare EEMI payload and perform IPI transaction
+ *
+ * EEMI - Embedded Energy Management Interface is Xilinx proprietary protocol
+ * to allow communication between power management controller and different
+ * processing clusters.
+ *
+ * This handler prepares EEMI protocol payload received from kernel and performs
+ * IPI transaction.
+ */
+static uintptr_t eemi_handler(uint32_t api_id, uint32_t *pm_arg,
+ void *handle, uint32_t security_flag)
+{
+ enum pm_ret_status ret;
+ uint32_t buf[PAYLOAD_ARG_CNT] = {0};
+
+ ret = pm_handle_eemi_call(security_flag, api_id, pm_arg[0], pm_arg[1],
+ pm_arg[2], pm_arg[3], pm_arg[4],
+ (uint64_t *)buf);
+ /*
+ * Two IOCTLs, to get clock name and pinctrl name of pm_query_data API
+ * receives 5 words of respoonse from firmware. Currently linux driver can
+ * receive only 4 words from TF-A. So, this needs to be handled separately
+ * than other eemi calls.
+ */
+ if (api_id == PM_QUERY_DATA) {
+ if ((pm_arg[0] == XPM_QID_CLOCK_GET_NAME ||
+ pm_arg[0] == XPM_QID_PINCTRL_GET_FUNCTION_NAME) &&
+ ret == PM_RET_SUCCESS) {
+ SMC_RET2(handle, (uint64_t)buf[0] | ((uint64_t)buf[1] << 32U),
+ (uint64_t)buf[2] | ((uint64_t)buf[3] << 32U));
+ }
+ }
+
+ SMC_RET2(handle, (uint64_t)ret | ((uint64_t)buf[0] << 32U),
+ (uint64_t)buf[1] | ((uint64_t)buf[2] << 32U));
+}
+
+/**
+ * pm_smc_handler() - SMC handler for PM-API calls coming from EL1/EL2.
+ * @smc_fid - Function Identifier
+ * @x1 - x4 - SMC64 Arguments from kernel
+ * x3 (upper 32-bits) and x4 are Unused
+ * @cookie - Unused
+ * @handler - Pointer to caller's context structure
+ *
+ * @return - Unused
+ *
+ * Determines that smc_fid is valid and supported PM SMC Function ID from the
+ * list of pm_api_ids, otherwise completes the request with
+ * the unknown SMC Function ID
+ *
+ * The SMC calls for PM service are forwarded from SIP Service SMC handler
+ * function with rt_svc_handle signature
+ */
+uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3,
+ uint64_t x4, const void *cookie, void *handle, uint64_t flags)
+{
+ uintptr_t ret;
+ uint32_t pm_arg[PAYLOAD_ARG_CNT] = {0};
+ uint32_t security_flag = SECURE_FLAG;
+ uint32_t api_id;
+
+ /* Handle case where PM wasn't initialized properly */
+ if (pm_up == false) {
+ SMC_RET1(handle, SMC_UNK);
+ }
+
+ /*
+ * Mark BIT24 payload (i.e 1st bit of pm_arg[3] ) as non-secure (1)
+ * if smc called is non secure
+ */
+ if (is_caller_non_secure(flags) != 0) {
+ security_flag = NON_SECURE_FLAG;
+ }
+
+ pm_arg[0] = (uint32_t)x1;
+ pm_arg[1] = (uint32_t)(x1 >> 32U);
+ pm_arg[2] = (uint32_t)x2;
+ pm_arg[3] = (uint32_t)(x2 >> 32U);
+ pm_arg[4] = (uint32_t)x3;
+ (void)(x4);
+ api_id = smc_fid & FUNCID_NUM_MASK;
+
+ ret = eemi_for_compatibility(api_id, pm_arg, handle, security_flag);
+ if (ret != (uintptr_t)0) {
+ return ret;
+ }
+
+ ret = eemi_psci_debugfs_handler(api_id, pm_arg, handle, flags);
+ if (ret != (uintptr_t)0) {
+ return ret;
+ }
+
+ ret = TF_A_specific_handler(api_id, pm_arg, handle, security_flag);
+ if (ret != (uintptr_t)0) {
+ return ret;
+ }
+
+ ret = eemi_handler(api_id, pm_arg, handle, security_flag);
+
+ return ret;
+}