plat/amd/versal2/scmi.c - filogic/atf - Gitiles

 /*
  * Copyright (c) 2023-2024, Advanced Micro Devices, Inc. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */

 #include <assert.h>
 #include <errno.h>
 #include <inttypes.h>

 #include <drivers/scmi-msg.h>
 #include <drivers/scmi.h>
 #include <lib/mmio.h>
 #include <lib/utils_def.h>
 #include <platform_def.h>
 #include <scmi.h>

 #include "plat_private.h"

 #define HIGH (1)
 #define LOW (0)

 struct scmi_clk {
 	unsigned long clock_id;
 	unsigned long rate;
 	const char *name;
 	bool enabled;
 };

 #define CLOCK_CELL(_scmi_id, _id, _name, _init_enabled, _rate) \
 	[_scmi_id] = { \
 		.clock_id = (_id), \
 		.name = (_name), \
 		.enabled = (_init_enabled), \
 		.rate = (_rate), \
 	}

 static struct scmi_clk scmi0_clock[] = {
 	CLOCK_CELL(CLK_GEM0_0, CLK_GEM0_0, "gem0_pclk", true, 100000000),
 	CLOCK_CELL(CLK_GEM0_1, CLK_GEM0_1, "gem0_hclk", true, 100000000),
 	CLOCK_CELL(CLK_GEM0_2, CLK_GEM0_2, "gem0_tx_clk", true, 125000000),
 	CLOCK_CELL(CLK_GEM0_3, CLK_GEM0_3, "gem0_rx_clk", true, 100000000),
 	CLOCK_CELL(CLK_GEM0_4, CLK_GEM0_4, "gem0_tsu_clk", true, 100000000),
 	CLOCK_CELL(CLK_GEM1_0, CLK_GEM1_0, "gem1_pclk", true, 100000000),
 	CLOCK_CELL(CLK_GEM1_1, CLK_GEM1_1, "gem1_hclk", true, 100000000),
 	CLOCK_CELL(CLK_GEM1_2, CLK_GEM1_2, "gem1_tx_clk", true, 125000000),
 	CLOCK_CELL(CLK_GEM1_3, CLK_GEM1_3, "gem1_rx_clk", true, 100000000),
 	CLOCK_CELL(CLK_GEM1_4, CLK_GEM1_4, "gem1_tsu_clk", true, 100000000),
 	CLOCK_CELL(CLK_SERIAL0_0, CLK_SERIAL0_0, "uart0_uartclk", true, 100000000),
 	CLOCK_CELL(CLK_SERIAL0_1, CLK_SERIAL0_1, "uart0_apb_pclk", true, 100000000),
 	CLOCK_CELL(CLK_SERIAL1_0, CLK_SERIAL1_0, "uart1_uartclk", true, 100000000),
 	CLOCK_CELL(CLK_SERIAL1_1, CLK_SERIAL1_1, "uart1_apb_pclk", true, 100000000),
 	CLOCK_CELL(CLK_UFS0_0, CLK_UFS0_0, "ufs_core_clk", true, 100000000),
 	CLOCK_CELL(CLK_UFS0_1, CLK_UFS0_1, "ufs_phy_clk", true, 26000000),
 	CLOCK_CELL(CLK_UFS0_2, CLK_UFS0_2, "ufs_ref_pclk", true, 26000000),
 	CLOCK_CELL(CLK_USB0_0, CLK_USB0_0, "usb0_bus_clk", true, 100000000),
 	CLOCK_CELL(CLK_USB0_1, CLK_USB0_1, "usb0_ref_clk", true, 100000000),
 	CLOCK_CELL(CLK_USB0_2, CLK_USB0_2, "usb0_dwc_clk", true, 100000000),
 	CLOCK_CELL(CLK_USB1_0, CLK_USB1_0, "usb1_bus_clk", true, 100000000),
 	CLOCK_CELL(CLK_USB1_1, CLK_USB1_1, "usb1_ref_clk", true, 100000000),
 	CLOCK_CELL(CLK_USB1_2, CLK_USB1_2, "usb1_dwc_clk", true, 100000000),
 	CLOCK_CELL(CLK_MMC0_0, CLK_MMC0_0, "mmc0_xin_clk", true, 100000000),
 	CLOCK_CELL(CLK_MMC0_1, CLK_MMC0_1, "mmc0_ahb_clk", true, 100000000),
 	CLOCK_CELL(CLK_MMC0_2, CLK_MMC0_2, "mmc0_gate_clk", true, 100000000),
 	CLOCK_CELL(CLK_MMC1_0, CLK_MMC1_0, "mmc1_xin_clk", true, 100000000),
 	CLOCK_CELL(CLK_MMC1_1, CLK_MMC1_1, "mmc1_ahb_clk", true, 100000000),
 	CLOCK_CELL(CLK_MMC1_2, CLK_MMC1_2, "mmc1_gate_clk", true, 100000000),
 	CLOCK_CELL(CLK_TTC0_0, CLK_TTC0_0, "ttc0_clk", true, 100000000),
 	CLOCK_CELL(CLK_TTC1_0, CLK_TTC1_0, "ttc1_clk", true, 100000000),
 	CLOCK_CELL(CLK_TTC2_0, CLK_TTC2_0, "ttc2_clk", true, 100000000),
 	CLOCK_CELL(CLK_TTC3_0, CLK_TTC3_0, "ttc3_clk", true, 100000000),
 	CLOCK_CELL(CLK_TTC4_0, CLK_TTC4_0, "ttc4_clk", true, 100000000),
 	CLOCK_CELL(CLK_TTC5_0, CLK_TTC5_0, "ttc5_clk", true, 100000000),
 	CLOCK_CELL(CLK_TTC6_0, CLK_TTC6_0, "ttc6_clk", true, 100000000),
 	CLOCK_CELL(CLK_TTC7_0, CLK_TTC7_0, "ttc7_clk", true, 100000000),
 	CLOCK_CELL(CLK_I2C0_0, CLK_I2C0_0, "i2c0_clk", true, 100000000),
 	CLOCK_CELL(CLK_I2C1_0, CLK_I2C1_0, "i2c1_clk", true, 100000000),
 	CLOCK_CELL(CLK_I2C2_0, CLK_I2C2_0, "i2c2_clk", true, 100000000),
 	CLOCK_CELL(CLK_I2C3_0, CLK_I2C3_0, "i2c3_clk", true, 100000000),
 	CLOCK_CELL(CLK_I2C4_0, CLK_I2C4_0, "i2c4_clk", true, 100000000),
 	CLOCK_CELL(CLK_I2C5_0, CLK_I2C5_0, "i2c5_clk", true, 100000000),
 	CLOCK_CELL(CLK_I2C6_0, CLK_I2C6_0, "i2c6_clk", true, 100000000),
 	CLOCK_CELL(CLK_I2C7_0, CLK_I2C7_0, "i2c7_clk", true, 100000000),
 	CLOCK_CELL(CLK_OSPI0_0, CLK_OSPI0_0, "ospi0_clk", true, 100000000),
 	CLOCK_CELL(CLK_QSPI0_0, CLK_QSPI0_0, "qpsi0_ref_clk", true, 100000000),
 	CLOCK_CELL(CLK_QSPI0_1, CLK_QSPI0_1, "qspi0_pclk", true, 100000000),
 	CLOCK_CELL(CLK_WWDT0_0, CLK_WWDT0_0, "wwdt0_clk", true, 100000000),
 	CLOCK_CELL(CLK_WWDT1_0, CLK_WWDT1_0, "wwdt1_clk", true, 100000000),
 	CLOCK_CELL(CLK_WWDT2_0, CLK_WWDT2_0, "wwdt2_clk", true, 100000000),
 	CLOCK_CELL(CLK_WWDT3_0, CLK_WWDT3_0, "wwdt3_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA0_0, CLK_ADMA0_0, "adma0_main_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA0_1, CLK_ADMA0_1, "adma0_apb_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA1_0, CLK_ADMA1_0, "adma1_main_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA1_1, CLK_ADMA1_1, "adma1_apb_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA2_0, CLK_ADMA2_0, "adma2_main_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA2_1, CLK_ADMA2_1, "adma2_apb_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA3_0, CLK_ADMA3_0, "adma3_main_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA3_1, CLK_ADMA3_1, "adma3_apb_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA4_0, CLK_ADMA4_0, "adma4_main_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA4_1, CLK_ADMA4_1, "adma4_apb_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA5_0, CLK_ADMA5_0, "adma5_main_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA5_1, CLK_ADMA5_1, "adma5_apb_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA6_0, CLK_ADMA6_0, "adma6_main_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA6_1, CLK_ADMA6_1, "adma6_apb_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA7_0, CLK_ADMA7_0, "adma7_main_clk", true, 100000000),
 	CLOCK_CELL(CLK_ADMA7_1, CLK_ADMA7_1, "adma7_apb_clk", true, 100000000),
 	CLOCK_CELL(CLK_CAN0_0, CLK_CAN0_0, "can0_can_clk", true, 100000000),
 	CLOCK_CELL(CLK_CAN0_1, CLK_CAN0_1, "can0_axi_clk", true, 100000000),
 	CLOCK_CELL(CLK_CAN1_0, CLK_CAN1_0, "can1_can_clk", true, 100000000),
 	CLOCK_CELL(CLK_CAN1_1, CLK_CAN1_1, "can1_axi_clk", true, 100000000),
 	CLOCK_CELL(CLK_CAN2_0, CLK_CAN2_0, "can2_can_clk", true, 100000000),
 	CLOCK_CELL(CLK_CAN2_1, CLK_CAN2_1, "can2_axi_clk", true, 100000000),
 	CLOCK_CELL(CLK_CAN3_0, CLK_CAN3_0, "can3_can_clk", true, 100000000),
 	CLOCK_CELL(CLK_CAN3_1, CLK_CAN3_1, "can3_axi_clk", true, 100000000),
 	CLOCK_CELL(CLK_PS_GPIO_0, CLK_PS_GPIO_0, "ps_gpio_clk", true, 100000000),
 	CLOCK_CELL(CLK_PMC_GPIO_0, CLK_PMC_GPIO_0, "pmc_gpio_clk", true, 100000000),
 	CLOCK_CELL(CLK_SPI0_0, CLK_SPI0_0, "spi0_ref_clk", true, 100000000),
 	CLOCK_CELL(CLK_SPI0_1, CLK_SPI0_1, "spi0_pclk", true, 100000000),
 	CLOCK_CELL(CLK_SPI1_0, CLK_SPI1_0, "spi1_ref_clk", true, 100000000),
 	CLOCK_CELL(CLK_SPI1_1, CLK_SPI1_1, "spi1_pclk", true, 100000000),
 	CLOCK_CELL(CLK_I3C0_0, CLK_I3C0_0, "i3c0_clk", true, 100000000),
 	CLOCK_CELL(CLK_I3C1_0, CLK_I3C1_0, "i3c1_clk", true, 100000000),
 	CLOCK_CELL(CLK_I3C2_0, CLK_I3C2_0, "i3c2_clk", true, 100000000),
 	CLOCK_CELL(CLK_I3C3_0, CLK_I3C3_0, "i3c3_clk", true, 100000000),
 	CLOCK_CELL(CLK_I3C4_0, CLK_I3C4_0, "i3c4_clk", true, 100000000),
 	CLOCK_CELL(CLK_I3C5_0, CLK_I3C5_0, "i3c5_clk", true, 100000000),
 	CLOCK_CELL(CLK_I3C6_0, CLK_I3C6_0, "i3c6_clk", true, 100000000),
 	CLOCK_CELL(CLK_I3C7_0, CLK_I3C7_0, "i3c7_clk", true, 100000000),
 };

 /*
  * struct scmi_reset - Data for the exposed reset controller
  * @reset_id: Reset identifier in RCC reset driver
  * @name: Reset string ID exposed to agent
  */
 struct scmi_reset {
 	unsigned long reset_id;
 	const char *name;
 };

 #define RESET_CELL(_scmi_id, _id, _name) \
 	[_scmi_id] = { \
 		.reset_id = (_id), \
 		.name = (_name), \
 	}

 static struct scmi_reset scmi0_reset[] = {
 	RESET_CELL(RESET_GEM0_0, RESET_GEM0_0, "gem0"),
 	RESET_CELL(RESET_GEM1_0, RESET_GEM1_0, "gem1"),
 	RESET_CELL(RESET_SERIAL0_0, RESET_SERIAL0_0, "serial0"),
 	RESET_CELL(RESET_SERIAL1_0, RESET_SERIAL1_0, "serial1"),
 	RESET_CELL(RESET_UFS0_0, RESET_UFS0_0, "ufs0"),
 	RESET_CELL(RESET_I2C0_0, RESET_I2C0_0, "i2c0"),
 	RESET_CELL(RESET_I2C1_0, RESET_I2C1_0, "i2c1"),
 	RESET_CELL(RESET_I2C2_0, RESET_I2C2_0, "i2c2"),
 	RESET_CELL(RESET_I2C3_0, RESET_I2C3_0, "i2c3"),
 	RESET_CELL(RESET_I2C4_0, RESET_I2C4_0, "i2c4"),
 	RESET_CELL(RESET_I2C5_0, RESET_I2C5_0, "i2c5"),
 	RESET_CELL(RESET_I2C6_0, RESET_I2C6_0, "i2c6"),
 	RESET_CELL(RESET_I2C7_0, RESET_I2C7_0, "i2c7"),
 	RESET_CELL(RESET_I2C8_0, RESET_I2C8_0, "i2c8"),
 	RESET_CELL(RESET_OSPI0_0, RESET_OSPI0_0, "ospi"),
 	RESET_CELL(RESET_USB0_0, RESET_USB0_0, "usb0_0"),
 	RESET_CELL(RESET_USB0_1, RESET_USB0_1, "usb0_1"),
 	RESET_CELL(RESET_USB0_2, RESET_USB0_2, "usb0_2"),
 	RESET_CELL(RESET_USB1_0, RESET_USB1_0, "usb1_0"),
 	RESET_CELL(RESET_USB1_1, RESET_USB1_1, "usb1_1"),
 	RESET_CELL(RESET_USB1_2, RESET_USB1_2, "usb1_2"),
 	RESET_CELL(RESET_MMC0_0, RESET_MMC0_0, "mmc0"),
 	RESET_CELL(RESET_MMC1_0, RESET_MMC1_0, "mmc1"),
 	RESET_CELL(RESET_SPI0_0, RESET_SPI0_0, "spi0"),
 	RESET_CELL(RESET_SPI1_0, RESET_SPI1_0, "spi1"),
 	RESET_CELL(RESET_QSPI0_0, RESET_QSPI0_0, "qspi"),
 	RESET_CELL(RESET_I3C0_0, RESET_I3C0_0, "i3c0"),
 	RESET_CELL(RESET_I3C1_0, RESET_I3C1_0, "i3c1"),
 	RESET_CELL(RESET_I3C2_0, RESET_I3C2_0, "i3c2"),
 	RESET_CELL(RESET_I3C3_0, RESET_I3C3_0, "i3c3"),
 	RESET_CELL(RESET_I3C4_0, RESET_I3C4_0, "i3c4"),
 	RESET_CELL(RESET_I3C5_0, RESET_I3C5_0, "i3c5"),
 	RESET_CELL(RESET_I3C6_0, RESET_I3C6_0, "i3c6"),
 	RESET_CELL(RESET_I3C7_0, RESET_I3C7_0, "i3c7"),
 	RESET_CELL(RESET_I3C8_0, RESET_I3C8_0, "i3c8"),
 	RESET_CELL(RESET_UFSPHY_0, RESET_UFSPHY_0, "ufsphy0"),
 };

 /**
  * struct scmi_pd - Data for the exposed power domain controller
  * @pd_id: pd identifier in RCC reset driver
  * @name: pd string ID exposed to agent
  * @state: keep state setting
  */
 struct scmi_pd {
 	unsigned long pd_id;
 	const char *name;
 	unsigned int state;
 };

 #define PD_CELL(_scmi_id, _id, _name, _state) \
 	[_scmi_id] = { \
 		.pd_id = _id, \
 		.name = _name, \
 		.state = _state, \
 	}

 static struct scmi_pd scmi0_pd[] = {
 	PD_CELL(PD_USB0, PD_USB0, "usb0", 0),
 	PD_CELL(PD_USB1, PD_USB1, "usb1", 0),
 };

 struct scmi_resources {
 	struct scmi_clk *clock;
 	size_t clock_count;
 	struct scmi_reset *reset;
 	size_t reset_count;
 	struct scmi_pd *pd;
 	size_t pd_count;
 };

 static const struct scmi_resources resources[] = {
 	[0] = {
 		.clock = scmi0_clock,
 		.clock_count = ARRAY_SIZE(scmi0_clock),
 		.reset = scmi0_reset,
 		.reset_count = ARRAY_SIZE(scmi0_reset),
 		.pd = scmi0_pd,
 		.pd_count = ARRAY_SIZE(scmi0_pd),
 	},
 };

 static const struct scmi_resources *find_resource(unsigned int agent_id)
 {
 	assert(agent_id < ARRAY_SIZE(resources));

 	return &resources[agent_id];
 }

 static struct scmi_clk *clk_find(unsigned int agent_id, unsigned int scmi_id)
 {
 	const struct scmi_resources *resource = find_resource(agent_id);
 	size_t n = 0U;
 	struct scmi_clk *ret = NULL;

 	if (resource != NULL) {
 		for (n = 0U; n < resource->clock_count; n++) {
 			if (n == scmi_id) {
 				ret = &resource->clock[n];
 				break;
 			}
 		}
 	}

 	return ret;
 }

 size_t plat_scmi_clock_count(unsigned int agent_id)
 {
 	const struct scmi_resources *resource = find_resource(agent_id);
 	size_t ret;

 	if (resource == NULL) {
 		ret = 0U;
 	} else {
 		VERBOSE("SCMI: CLK: %d clocks\n", (unsigned int)resource->clock_count);

 		ret = resource->clock_count;
 	}
 	return ret;
 }

 const char *plat_scmi_clock_get_name(unsigned int agent_id, unsigned int scmi_id)
 {
 	const struct scmi_clk *clock = clk_find(agent_id, scmi_id);
 	const char *ret;

 	if (clock == NULL) {
 		ret = NULL;
 	} else {
 		VERBOSE("SCMI: CLK: id: %d, get_name: %s\n", scmi_id, clock->name);

 		ret = clock->name;
 	}
 	return ret;
 };

 /* Called by Linux */
 int32_t plat_scmi_clock_rates_array(unsigned int agent_id, unsigned int scmi_id,
 				    unsigned long *array, size_t *nb_elts,
 				    uint32_t start_idx)
 {
 	const struct scmi_clk *clock = clk_find(agent_id, scmi_id);

 	if (clock == NULL) {
 		return SCMI_NOT_FOUND;
 	}

 	if (start_idx > 0) {
 		return SCMI_OUT_OF_RANGE;
 	}

 	if (array == NULL) {
 		*nb_elts = 1U;
 	} else if (*nb_elts == 1U) {
 		*array = clock->rate;
 		VERBOSE("SCMI: CLK: id: %d, clk_name: %s, get_rate %lu\n",
 		     scmi_id, clock->name, *array);
 	} else {
 		return SCMI_GENERIC_ERROR;
 	}

 	return SCMI_SUCCESS;
 }

 unsigned long plat_scmi_clock_get_rate(unsigned int agent_id, unsigned int scmi_id)
 {
 	const struct scmi_clk *clock = clk_find(agent_id, scmi_id);
 	unsigned long ret;

 	if ((clock == NULL)) {
 		ret = SCMI_NOT_FOUND;
 	} else {
 		VERBOSE("SCMI: CLK: id: %d, get_rate: %lu\n", scmi_id, clock->rate);
 		ret = clock->rate;
 	}
 	return ret;
 }

 int32_t plat_scmi_clock_set_rate(unsigned int agent_id, unsigned int scmi_id,
 				 unsigned long rate)
 {
 	struct scmi_clk *clock = clk_find(agent_id, scmi_id);
 	unsigned long ret = UL(SCMI_SUCCESS);

 	if ((clock == NULL)) {
 		ret = SCMI_NOT_FOUND;
 	} else {
 		VERBOSE("SCMI: CLK: id: %d, set_rate: %lu\n", scmi_id, rate);
 		clock->rate = rate;
 	}
 	return ret;
 }

 int32_t plat_scmi_clock_get_state(unsigned int agent_id, unsigned int scmi_id)
 {
 	const struct scmi_clk *clock = clk_find(agent_id, scmi_id);
 	int32_t ret;

 	if ((clock == NULL)) {
 		ret = SCMI_NOT_FOUND;
 	} else {
 		VERBOSE("SCMI: CLK: id: %d, get_state: %d\n", scmi_id, clock->enabled);

 		if (clock->enabled) {
 			ret = HIGH;
 		} else {
 			ret = LOW;
 		}
 	}
 	return ret;
 }

 int32_t plat_scmi_clock_set_state(unsigned int agent_id, unsigned int scmi_id,
 				  bool enable_not_disable)
 {
 	struct scmi_clk *clock = clk_find(agent_id, scmi_id);
 	int32_t ret;

 	if (clock == NULL) {
 		ret = SCMI_NOT_FOUND;
 	} else {
 		if (enable_not_disable) {
 			if (!clock->enabled) {
 				VERBOSE("SCMI: clock: %u enable\n", scmi_id);
 				clock->enabled = true;
 			}
 		} else {
 			if (clock->enabled) {
 				VERBOSE("SCMI: clock: %u disable\n", scmi_id);
 				clock->enabled = false;
 			}
 		}

 		VERBOSE("SCMI: CLK: id: %d, set_state: %d\n", scmi_id, clock->enabled);

 		ret = SCMI_SUCCESS;
 	}

 	return ret;
 }


 /*
  * Platform SCMI reset domains
  */
 static struct scmi_reset *find_reset(unsigned int agent_id,
 					 unsigned int scmi_id)
 {
 	const struct scmi_resources *resource = find_resource(agent_id);
 	size_t n;

 	if (resource != NULL) {
 		for (n = 0U; n < resource->reset_count; n++) {
 			if (n == scmi_id) {
 				return &resource->reset[n];
 			}
 		}
 	}

 	return NULL;
 }

 const char *plat_scmi_rstd_get_name(unsigned int agent_id, unsigned int scmi_id)
 {
 	const struct scmi_reset *reset = find_reset(agent_id, scmi_id);

 	if (reset == NULL) {
 		return NULL;
 	}

 	return reset->name;
 }

 size_t plat_scmi_rstd_count(unsigned int agent_id)
 {
 	const struct scmi_resources *resource = find_resource(agent_id);

 	if (resource == NULL) {
 		return 0U;
 	}

 	return resource->reset_count;
 }

 int32_t plat_scmi_rstd_autonomous(unsigned int agent_id, unsigned int scmi_id,
 				uint32_t state)
 {
 	const struct scmi_reset *reset = find_reset(agent_id, scmi_id);

 	if (reset == NULL) {
 		return SCMI_NOT_FOUND;
 	}

 	/* Supports only reset with context loss */
 	if (state != 0U) {
 		return SCMI_NOT_SUPPORTED;
 	}

 	NOTICE("SCMI reset on ID %lu/%s\n",
 	       reset->reset_id, plat_scmi_rstd_get_name(agent_id, scmi_id));

 	return SCMI_SUCCESS;
 }

 int32_t plat_scmi_rstd_set_state(unsigned int agent_id, unsigned int scmi_id,
 				 bool assert_not_deassert)
 {
 	const struct scmi_reset *reset = find_reset(agent_id, scmi_id);

 	if (reset == NULL) {
 		return SCMI_NOT_FOUND;
 	}

 	if (assert_not_deassert) {
 		NOTICE("SCMI reset %lu/%s set\n",
 		       reset->reset_id, plat_scmi_rstd_get_name(agent_id, scmi_id));

 		switch (scmi_id) {
 		case RESET_UFS0_0:
 			mmio_write_32(PMXC_CRP_RST_UFS, 1);
 			break;
 		case RESET_UFSPHY_0:
 			mmio_write_32(PMXC_IOU_SLCR_PHY_RESET, 1);
 			break;
 		default:
 			break;
 		}
 	} else {
 		NOTICE("SCMI reset %lu/%s release\n",
 		       reset->reset_id, plat_scmi_rstd_get_name(agent_id, scmi_id));

 		switch (scmi_id) {
 		case RESET_UFS0_0:
 			mmio_write_32(PMXC_CRP_RST_UFS, 0);
 			break;
 		case RESET_UFSPHY_0:
 			mmio_write_32(PMXC_IOU_SLCR_PHY_RESET, 0);
 			break;
 		default:
 			break;
 		}
 	}

 	return SCMI_SUCCESS;
 }

 /*
  * Platform SCMI reset domains
  */
 static struct scmi_pd *find_pd(unsigned int agent_id, unsigned int pd_id)
 {
 	const struct scmi_resources *resource = find_resource(agent_id);
 	size_t n;

 	if (resource != NULL) {
 		for (n = 0U; n < resource->pd_count; n++) {
 			if (n == pd_id) {
 				return &resource->pd[n];
 			}
 		}
 	}

 	return NULL;
 }

 size_t plat_scmi_pd_count(unsigned int agent_id)
 {
 	const struct scmi_resources *resource = find_resource(agent_id);
 	size_t ret;

 	if (resource == NULL) {
 		ret = 0U;
 	} else {
 		ret = resource->pd_count;

 		NOTICE("SCMI: PD: %d\n", (unsigned int)ret);
 	}
 	return ret;
 }

 const char *plat_scmi_pd_get_name(unsigned int agent_id, unsigned int pd_id)
 {
 	const struct scmi_pd *pd = find_pd(agent_id, pd_id);

 	if (pd == NULL) {
 		return NULL;
 	}

 	return pd->name;
 }

 unsigned int plat_scmi_pd_statistics(unsigned int agent_id, unsigned long *pd_id)
 {
 	return 0U;
 }

 unsigned int plat_scmi_pd_get_attributes(unsigned int agent_id, unsigned int pd_id)
 {
 	return 0U;
 }

 unsigned int plat_scmi_pd_get_state(unsigned int agent_id, unsigned int pd_id)
 {
 	const struct scmi_pd *pd = find_pd(agent_id, pd_id);

 	if (pd == NULL) {
 		return SCMI_NOT_SUPPORTED;
 	}

 	NOTICE("SCMI: PD: get id: %d, state: %x\n", pd_id, pd->state);

 	return pd->state;
 }

 int32_t plat_scmi_pd_set_state(unsigned int agent_id, unsigned int flags, unsigned int pd_id,
 			       unsigned int state)
 {
 	struct scmi_pd *pd = find_pd(agent_id, pd_id);

 	if (pd == NULL) {
 		return SCMI_NOT_SUPPORTED;
 	}

 	NOTICE("SCMI: PD: set id: %d, orig state: %x, new state: %x,  flags: %x\n",
 	       pd_id, pd->state, state, flags);

 	pd->state = state;

 	return 0U;
 }


 /* Currently only one channel is supported. Expectation is that channel 0 is used by NS SW */
 static struct scmi_msg_channel scmi_channel[] = {
 	[0] = {
 		.shm_addr = SMT_BUFFER_BASE,
 		.shm_size = SMT_BUF_SLOT_SIZE,
 	},
 };

 struct scmi_msg_channel *plat_scmi_get_channel(unsigned int agent_id)
 {
 	assert(agent_id < ARRAY_SIZE(scmi_channel));

 	VERBOSE("%d: SCMI asking for channel\n", agent_id);

 	/* Just in case that code is reused */
 	return &scmi_channel[agent_id];
 }

 /* Base protocol implementations */
 const char *plat_scmi_vendor_name(void)
 {
 	return SCMI_VENDOR;
 }

 const char *plat_scmi_sub_vendor_name(void)
 {
 	return SCMI_PRODUCT;
 }

 /* Currently supporting Clocks and Reset Domains */
 static const uint8_t plat_protocol_list[] = {
 	SCMI_PROTOCOL_ID_BASE,
 	SCMI_PROTOCOL_ID_CLOCK,
 	SCMI_PROTOCOL_ID_RESET_DOMAIN,
 	SCMI_PROTOCOL_ID_POWER_DOMAIN,
 	/* SCMI_PROTOCOL_ID_SENSOR, */
 	0U /* Null termination */
 };

 size_t plat_scmi_protocol_count(void)
 {
 	const size_t count = ARRAY_SIZE(plat_protocol_list) - 1U;

 	VERBOSE("SCMI: Protocol count: %d\n", (int32_t)count);

 	return count;
 }

 const uint8_t *plat_scmi_protocol_list(unsigned int agent_id __unused)
 {
 	return plat_protocol_list;
 }

 void init_scmi_server(void)
 {
 	size_t i;
 	int32_t ret;

 	for (i = 0U; i < ARRAY_SIZE(scmi_channel); i++)
 		scmi_smt_init_agent_channel(&scmi_channel[i]);

 	INFO("SCMI: Server initialized\n");

 	if (platform_id == QEMU) {
 		/* default setting is for QEMU */
 	} else if (platform_id == SPP) {
 		for (i = 0U; i < ARRAY_SIZE(scmi0_clock); i++) {

 			/* Keep i2c on 100MHz to calculate rates properly */
 			if ((i >= CLK_I2C0_0) && (i <= CLK_I2C7_0))
 				continue;

 			/* Keep UFS clocks to default values to get the expected rates */
 			if (i >= CLK_UFS0_0 && i <= CLK_UFS0_2)
 				continue;

 			/*
 			 * SPP supports multiple versions.
 			 * The cpu_clock value is set to corresponding SPP
 			 * version in early platform setup, resuse the same
 			 * value here.
 			 */
 			ret = plat_scmi_clock_set_rate(0, i, cpu_clock);
 			if (ret < 0) {
 				NOTICE("Failed to set clock rate for SPP scmi_id=%ld\n", i);
 			}
 		}
 	} else {
 		 /* Making MISRA C 2012 15.7 compliant */
 	}
 }
	/*
	* Copyright (c) 2023-2024, Advanced Micro Devices, Inc. All rights reserved.
	*
	* SPDX-License-Identifier: BSD-3-Clause
	*/

	#include <assert.h>
	#include <errno.h>
	#include <inttypes.h>

	#include <drivers/scmi-msg.h>
	#include <drivers/scmi.h>
	#include <lib/mmio.h>
	#include <lib/utils_def.h>
	#include <platform_def.h>
	#include <scmi.h>

	#include "plat_private.h"

	#define HIGH (1)
	#define LOW (0)

	struct scmi_clk {
	unsigned long clock_id;
	unsigned long rate;
	const char *name;
	bool enabled;
	};

	#define CLOCK_CELL(_scmi_id, _id, _name, _init_enabled, _rate) \
	[_scmi_id] = { \
	.clock_id = (_id), \
	.name = (_name), \
	.enabled = (_init_enabled), \
	.rate = (_rate), \
	}

	static struct scmi_clk scmi0_clock[] = {
	CLOCK_CELL(CLK_GEM0_0, CLK_GEM0_0, "gem0_pclk", true, 100000000),
	CLOCK_CELL(CLK_GEM0_1, CLK_GEM0_1, "gem0_hclk", true, 100000000),
	CLOCK_CELL(CLK_GEM0_2, CLK_GEM0_2, "gem0_tx_clk", true, 125000000),
	CLOCK_CELL(CLK_GEM0_3, CLK_GEM0_3, "gem0_rx_clk", true, 100000000),
	CLOCK_CELL(CLK_GEM0_4, CLK_GEM0_4, "gem0_tsu_clk", true, 100000000),
	CLOCK_CELL(CLK_GEM1_0, CLK_GEM1_0, "gem1_pclk", true, 100000000),
	CLOCK_CELL(CLK_GEM1_1, CLK_GEM1_1, "gem1_hclk", true, 100000000),
	CLOCK_CELL(CLK_GEM1_2, CLK_GEM1_2, "gem1_tx_clk", true, 125000000),
	CLOCK_CELL(CLK_GEM1_3, CLK_GEM1_3, "gem1_rx_clk", true, 100000000),
	CLOCK_CELL(CLK_GEM1_4, CLK_GEM1_4, "gem1_tsu_clk", true, 100000000),
	CLOCK_CELL(CLK_SERIAL0_0, CLK_SERIAL0_0, "uart0_uartclk", true, 100000000),
	CLOCK_CELL(CLK_SERIAL0_1, CLK_SERIAL0_1, "uart0_apb_pclk", true, 100000000),
	CLOCK_CELL(CLK_SERIAL1_0, CLK_SERIAL1_0, "uart1_uartclk", true, 100000000),
	CLOCK_CELL(CLK_SERIAL1_1, CLK_SERIAL1_1, "uart1_apb_pclk", true, 100000000),
	CLOCK_CELL(CLK_UFS0_0, CLK_UFS0_0, "ufs_core_clk", true, 100000000),
	CLOCK_CELL(CLK_UFS0_1, CLK_UFS0_1, "ufs_phy_clk", true, 26000000),
	CLOCK_CELL(CLK_UFS0_2, CLK_UFS0_2, "ufs_ref_pclk", true, 26000000),
	CLOCK_CELL(CLK_USB0_0, CLK_USB0_0, "usb0_bus_clk", true, 100000000),
	CLOCK_CELL(CLK_USB0_1, CLK_USB0_1, "usb0_ref_clk", true, 100000000),
	CLOCK_CELL(CLK_USB0_2, CLK_USB0_2, "usb0_dwc_clk", true, 100000000),
	CLOCK_CELL(CLK_USB1_0, CLK_USB1_0, "usb1_bus_clk", true, 100000000),
	CLOCK_CELL(CLK_USB1_1, CLK_USB1_1, "usb1_ref_clk", true, 100000000),
	CLOCK_CELL(CLK_USB1_2, CLK_USB1_2, "usb1_dwc_clk", true, 100000000),
	CLOCK_CELL(CLK_MMC0_0, CLK_MMC0_0, "mmc0_xin_clk", true, 100000000),
	CLOCK_CELL(CLK_MMC0_1, CLK_MMC0_1, "mmc0_ahb_clk", true, 100000000),
	CLOCK_CELL(CLK_MMC0_2, CLK_MMC0_2, "mmc0_gate_clk", true, 100000000),
	CLOCK_CELL(CLK_MMC1_0, CLK_MMC1_0, "mmc1_xin_clk", true, 100000000),
	CLOCK_CELL(CLK_MMC1_1, CLK_MMC1_1, "mmc1_ahb_clk", true, 100000000),
	CLOCK_CELL(CLK_MMC1_2, CLK_MMC1_2, "mmc1_gate_clk", true, 100000000),
	CLOCK_CELL(CLK_TTC0_0, CLK_TTC0_0, "ttc0_clk", true, 100000000),
	CLOCK_CELL(CLK_TTC1_0, CLK_TTC1_0, "ttc1_clk", true, 100000000),
	CLOCK_CELL(CLK_TTC2_0, CLK_TTC2_0, "ttc2_clk", true, 100000000),
	CLOCK_CELL(CLK_TTC3_0, CLK_TTC3_0, "ttc3_clk", true, 100000000),
	CLOCK_CELL(CLK_TTC4_0, CLK_TTC4_0, "ttc4_clk", true, 100000000),
	CLOCK_CELL(CLK_TTC5_0, CLK_TTC5_0, "ttc5_clk", true, 100000000),
	CLOCK_CELL(CLK_TTC6_0, CLK_TTC6_0, "ttc6_clk", true, 100000000),
	CLOCK_CELL(CLK_TTC7_0, CLK_TTC7_0, "ttc7_clk", true, 100000000),
	CLOCK_CELL(CLK_I2C0_0, CLK_I2C0_0, "i2c0_clk", true, 100000000),
	CLOCK_CELL(CLK_I2C1_0, CLK_I2C1_0, "i2c1_clk", true, 100000000),
	CLOCK_CELL(CLK_I2C2_0, CLK_I2C2_0, "i2c2_clk", true, 100000000),
	CLOCK_CELL(CLK_I2C3_0, CLK_I2C3_0, "i2c3_clk", true, 100000000),
	CLOCK_CELL(CLK_I2C4_0, CLK_I2C4_0, "i2c4_clk", true, 100000000),
	CLOCK_CELL(CLK_I2C5_0, CLK_I2C5_0, "i2c5_clk", true, 100000000),
	CLOCK_CELL(CLK_I2C6_0, CLK_I2C6_0, "i2c6_clk", true, 100000000),
	CLOCK_CELL(CLK_I2C7_0, CLK_I2C7_0, "i2c7_clk", true, 100000000),
	CLOCK_CELL(CLK_OSPI0_0, CLK_OSPI0_0, "ospi0_clk", true, 100000000),
	CLOCK_CELL(CLK_QSPI0_0, CLK_QSPI0_0, "qpsi0_ref_clk", true, 100000000),
	CLOCK_CELL(CLK_QSPI0_1, CLK_QSPI0_1, "qspi0_pclk", true, 100000000),
	CLOCK_CELL(CLK_WWDT0_0, CLK_WWDT0_0, "wwdt0_clk", true, 100000000),
	CLOCK_CELL(CLK_WWDT1_0, CLK_WWDT1_0, "wwdt1_clk", true, 100000000),
	CLOCK_CELL(CLK_WWDT2_0, CLK_WWDT2_0, "wwdt2_clk", true, 100000000),
	CLOCK_CELL(CLK_WWDT3_0, CLK_WWDT3_0, "wwdt3_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA0_0, CLK_ADMA0_0, "adma0_main_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA0_1, CLK_ADMA0_1, "adma0_apb_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA1_0, CLK_ADMA1_0, "adma1_main_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA1_1, CLK_ADMA1_1, "adma1_apb_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA2_0, CLK_ADMA2_0, "adma2_main_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA2_1, CLK_ADMA2_1, "adma2_apb_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA3_0, CLK_ADMA3_0, "adma3_main_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA3_1, CLK_ADMA3_1, "adma3_apb_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA4_0, CLK_ADMA4_0, "adma4_main_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA4_1, CLK_ADMA4_1, "adma4_apb_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA5_0, CLK_ADMA5_0, "adma5_main_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA5_1, CLK_ADMA5_1, "adma5_apb_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA6_0, CLK_ADMA6_0, "adma6_main_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA6_1, CLK_ADMA6_1, "adma6_apb_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA7_0, CLK_ADMA7_0, "adma7_main_clk", true, 100000000),
	CLOCK_CELL(CLK_ADMA7_1, CLK_ADMA7_1, "adma7_apb_clk", true, 100000000),
	CLOCK_CELL(CLK_CAN0_0, CLK_CAN0_0, "can0_can_clk", true, 100000000),
	CLOCK_CELL(CLK_CAN0_1, CLK_CAN0_1, "can0_axi_clk", true, 100000000),
	CLOCK_CELL(CLK_CAN1_0, CLK_CAN1_0, "can1_can_clk", true, 100000000),
	CLOCK_CELL(CLK_CAN1_1, CLK_CAN1_1, "can1_axi_clk", true, 100000000),
	CLOCK_CELL(CLK_CAN2_0, CLK_CAN2_0, "can2_can_clk", true, 100000000),
	CLOCK_CELL(CLK_CAN2_1, CLK_CAN2_1, "can2_axi_clk", true, 100000000),
	CLOCK_CELL(CLK_CAN3_0, CLK_CAN3_0, "can3_can_clk", true, 100000000),
	CLOCK_CELL(CLK_CAN3_1, CLK_CAN3_1, "can3_axi_clk", true, 100000000),
	CLOCK_CELL(CLK_PS_GPIO_0, CLK_PS_GPIO_0, "ps_gpio_clk", true, 100000000),
	CLOCK_CELL(CLK_PMC_GPIO_0, CLK_PMC_GPIO_0, "pmc_gpio_clk", true, 100000000),
	CLOCK_CELL(CLK_SPI0_0, CLK_SPI0_0, "spi0_ref_clk", true, 100000000),
	CLOCK_CELL(CLK_SPI0_1, CLK_SPI0_1, "spi0_pclk", true, 100000000),
	CLOCK_CELL(CLK_SPI1_0, CLK_SPI1_0, "spi1_ref_clk", true, 100000000),
	CLOCK_CELL(CLK_SPI1_1, CLK_SPI1_1, "spi1_pclk", true, 100000000),
	CLOCK_CELL(CLK_I3C0_0, CLK_I3C0_0, "i3c0_clk", true, 100000000),
	CLOCK_CELL(CLK_I3C1_0, CLK_I3C1_0, "i3c1_clk", true, 100000000),
	CLOCK_CELL(CLK_I3C2_0, CLK_I3C2_0, "i3c2_clk", true, 100000000),
	CLOCK_CELL(CLK_I3C3_0, CLK_I3C3_0, "i3c3_clk", true, 100000000),
	CLOCK_CELL(CLK_I3C4_0, CLK_I3C4_0, "i3c4_clk", true, 100000000),
	CLOCK_CELL(CLK_I3C5_0, CLK_I3C5_0, "i3c5_clk", true, 100000000),
	CLOCK_CELL(CLK_I3C6_0, CLK_I3C6_0, "i3c6_clk", true, 100000000),
	CLOCK_CELL(CLK_I3C7_0, CLK_I3C7_0, "i3c7_clk", true, 100000000),
	};

	/*
	* struct scmi_reset - Data for the exposed reset controller
	* @reset_id: Reset identifier in RCC reset driver
	* @name: Reset string ID exposed to agent
	*/
	struct scmi_reset {
	unsigned long reset_id;
	const char *name;
	};

	#define RESET_CELL(_scmi_id, _id, _name) \
	[_scmi_id] = { \
	.reset_id = (_id), \
	.name = (_name), \
	}

	static struct scmi_reset scmi0_reset[] = {
	RESET_CELL(RESET_GEM0_0, RESET_GEM0_0, "gem0"),
	RESET_CELL(RESET_GEM1_0, RESET_GEM1_0, "gem1"),
	RESET_CELL(RESET_SERIAL0_0, RESET_SERIAL0_0, "serial0"),
	RESET_CELL(RESET_SERIAL1_0, RESET_SERIAL1_0, "serial1"),
	RESET_CELL(RESET_UFS0_0, RESET_UFS0_0, "ufs0"),
	RESET_CELL(RESET_I2C0_0, RESET_I2C0_0, "i2c0"),
	RESET_CELL(RESET_I2C1_0, RESET_I2C1_0, "i2c1"),
	RESET_CELL(RESET_I2C2_0, RESET_I2C2_0, "i2c2"),
	RESET_CELL(RESET_I2C3_0, RESET_I2C3_0, "i2c3"),
	RESET_CELL(RESET_I2C4_0, RESET_I2C4_0, "i2c4"),
	RESET_CELL(RESET_I2C5_0, RESET_I2C5_0, "i2c5"),
	RESET_CELL(RESET_I2C6_0, RESET_I2C6_0, "i2c6"),
	RESET_CELL(RESET_I2C7_0, RESET_I2C7_0, "i2c7"),
	RESET_CELL(RESET_I2C8_0, RESET_I2C8_0, "i2c8"),
	RESET_CELL(RESET_OSPI0_0, RESET_OSPI0_0, "ospi"),
	RESET_CELL(RESET_USB0_0, RESET_USB0_0, "usb0_0"),
	RESET_CELL(RESET_USB0_1, RESET_USB0_1, "usb0_1"),
	RESET_CELL(RESET_USB0_2, RESET_USB0_2, "usb0_2"),
	RESET_CELL(RESET_USB1_0, RESET_USB1_0, "usb1_0"),
	RESET_CELL(RESET_USB1_1, RESET_USB1_1, "usb1_1"),
	RESET_CELL(RESET_USB1_2, RESET_USB1_2, "usb1_2"),
	RESET_CELL(RESET_MMC0_0, RESET_MMC0_0, "mmc0"),
	RESET_CELL(RESET_MMC1_0, RESET_MMC1_0, "mmc1"),
	RESET_CELL(RESET_SPI0_0, RESET_SPI0_0, "spi0"),
	RESET_CELL(RESET_SPI1_0, RESET_SPI1_0, "spi1"),
	RESET_CELL(RESET_QSPI0_0, RESET_QSPI0_0, "qspi"),
	RESET_CELL(RESET_I3C0_0, RESET_I3C0_0, "i3c0"),
	RESET_CELL(RESET_I3C1_0, RESET_I3C1_0, "i3c1"),
	RESET_CELL(RESET_I3C2_0, RESET_I3C2_0, "i3c2"),
	RESET_CELL(RESET_I3C3_0, RESET_I3C3_0, "i3c3"),
	RESET_CELL(RESET_I3C4_0, RESET_I3C4_0, "i3c4"),
	RESET_CELL(RESET_I3C5_0, RESET_I3C5_0, "i3c5"),
	RESET_CELL(RESET_I3C6_0, RESET_I3C6_0, "i3c6"),
	RESET_CELL(RESET_I3C7_0, RESET_I3C7_0, "i3c7"),
	RESET_CELL(RESET_I3C8_0, RESET_I3C8_0, "i3c8"),
	RESET_CELL(RESET_UFSPHY_0, RESET_UFSPHY_0, "ufsphy0"),
	};

	/**
	* struct scmi_pd - Data for the exposed power domain controller
	* @pd_id: pd identifier in RCC reset driver
	* @name: pd string ID exposed to agent
	* @state: keep state setting
	*/
	struct scmi_pd {
	unsigned long pd_id;
	const char *name;
	unsigned int state;
	};

	#define PD_CELL(_scmi_id, _id, _name, _state) \
	[_scmi_id] = { \
	.pd_id = _id, \
	.name = _name, \
	.state = _state, \
	}

	static struct scmi_pd scmi0_pd[] = {
	PD_CELL(PD_USB0, PD_USB0, "usb0", 0),
	PD_CELL(PD_USB1, PD_USB1, "usb1", 0),
	};

	struct scmi_resources {
	struct scmi_clk *clock;
	size_t clock_count;
	struct scmi_reset *reset;
	size_t reset_count;
	struct scmi_pd *pd;
	size_t pd_count;
	};

	static const struct scmi_resources resources[] = {
	[0] = {
	.clock = scmi0_clock,
	.clock_count = ARRAY_SIZE(scmi0_clock),
	.reset = scmi0_reset,
	.reset_count = ARRAY_SIZE(scmi0_reset),
	.pd = scmi0_pd,
	.pd_count = ARRAY_SIZE(scmi0_pd),
	},
	};

	static const struct scmi_resources *find_resource(unsigned int agent_id)
	{
	assert(agent_id < ARRAY_SIZE(resources));

	return &resources[agent_id];
	}

	static struct scmi_clk *clk_find(unsigned int agent_id, unsigned int scmi_id)
	{
	const struct scmi_resources *resource = find_resource(agent_id);
	size_t n = 0U;
	struct scmi_clk *ret = NULL;

	if (resource != NULL) {
	for (n = 0U; n < resource->clock_count; n++) {
	if (n == scmi_id) {
	ret = &resource->clock[n];
	break;
	}
	}
	}

	return ret;
	}

	size_t plat_scmi_clock_count(unsigned int agent_id)
	{
	const struct scmi_resources *resource = find_resource(agent_id);
	size_t ret;

	if (resource == NULL) {
	ret = 0U;
	} else {
	VERBOSE("SCMI: CLK: %d clocks\n", (unsigned int)resource->clock_count);

	ret = resource->clock_count;
	}
	return ret;
	}

	const char *plat_scmi_clock_get_name(unsigned int agent_id, unsigned int scmi_id)
	{
	const struct scmi_clk *clock = clk_find(agent_id, scmi_id);
	const char *ret;

	if (clock == NULL) {
	ret = NULL;
	} else {
	VERBOSE("SCMI: CLK: id: %d, get_name: %s\n", scmi_id, clock->name);

	ret = clock->name;
	}
	return ret;
	};

	/* Called by Linux */
	int32_t plat_scmi_clock_rates_array(unsigned int agent_id, unsigned int scmi_id,
	unsigned long array, size_t nb_elts,
	uint32_t start_idx)
	{
	const struct scmi_clk *clock = clk_find(agent_id, scmi_id);

	if (clock == NULL) {
	return SCMI_NOT_FOUND;
	}

	if (start_idx > 0) {
	return SCMI_OUT_OF_RANGE;
	}

	if (array == NULL) {
	*nb_elts = 1U;
	} else if (*nb_elts == 1U) {
	*array = clock->rate;
	VERBOSE("SCMI: CLK: id: %d, clk_name: %s, get_rate %lu\n",
	scmi_id, clock->name, *array);
	} else {
	return SCMI_GENERIC_ERROR;
	}

	return SCMI_SUCCESS;
	}

	unsigned long plat_scmi_clock_get_rate(unsigned int agent_id, unsigned int scmi_id)
	{
	const struct scmi_clk *clock = clk_find(agent_id, scmi_id);
	unsigned long ret;

	if ((clock == NULL)) {
	ret = SCMI_NOT_FOUND;
	} else {
	VERBOSE("SCMI: CLK: id: %d, get_rate: %lu\n", scmi_id, clock->rate);
	ret = clock->rate;
	}
	return ret;
	}

	int32_t plat_scmi_clock_set_rate(unsigned int agent_id, unsigned int scmi_id,
	unsigned long rate)
	{
	struct scmi_clk *clock = clk_find(agent_id, scmi_id);
	unsigned long ret = UL(SCMI_SUCCESS);

	if ((clock == NULL)) {
	ret = SCMI_NOT_FOUND;
	} else {
	VERBOSE("SCMI: CLK: id: %d, set_rate: %lu\n", scmi_id, rate);
	clock->rate = rate;
	}
	return ret;
	}

	int32_t plat_scmi_clock_get_state(unsigned int agent_id, unsigned int scmi_id)
	{
	const struct scmi_clk *clock = clk_find(agent_id, scmi_id);
	int32_t ret;

	if ((clock == NULL)) {
	ret = SCMI_NOT_FOUND;
	} else {
	VERBOSE("SCMI: CLK: id: %d, get_state: %d\n", scmi_id, clock->enabled);

	if (clock->enabled) {
	ret = HIGH;
	} else {
	ret = LOW;
	}
	}
	return ret;
	}

	int32_t plat_scmi_clock_set_state(unsigned int agent_id, unsigned int scmi_id,
	bool enable_not_disable)
	{
	struct scmi_clk *clock = clk_find(agent_id, scmi_id);
	int32_t ret;

	if (clock == NULL) {
	ret = SCMI_NOT_FOUND;
	} else {
	if (enable_not_disable) {
	if (!clock->enabled) {
	VERBOSE("SCMI: clock: %u enable\n", scmi_id);
	clock->enabled = true;
	}
	} else {
	if (clock->enabled) {
	VERBOSE("SCMI: clock: %u disable\n", scmi_id);
	clock->enabled = false;
	}
	}

	VERBOSE("SCMI: CLK: id: %d, set_state: %d\n", scmi_id, clock->enabled);

	ret = SCMI_SUCCESS;
	}

	return ret;
	}


	/*
	* Platform SCMI reset domains
	*/
	static struct scmi_reset *find_reset(unsigned int agent_id,
	unsigned int scmi_id)
	{
	const struct scmi_resources *resource = find_resource(agent_id);
	size_t n;

	if (resource != NULL) {
	for (n = 0U; n < resource->reset_count; n++) {
	if (n == scmi_id) {
	return &resource->reset[n];
	}
	}
	}

	return NULL;
	}

	const char *plat_scmi_rstd_get_name(unsigned int agent_id, unsigned int scmi_id)
	{
	const struct scmi_reset *reset = find_reset(agent_id, scmi_id);

	if (reset == NULL) {
	return NULL;
	}

	return reset->name;
	}

	size_t plat_scmi_rstd_count(unsigned int agent_id)
	{
	const struct scmi_resources *resource = find_resource(agent_id);

	if (resource == NULL) {
	return 0U;
	}

	return resource->reset_count;
	}

	int32_t plat_scmi_rstd_autonomous(unsigned int agent_id, unsigned int scmi_id,
	uint32_t state)
	{
	const struct scmi_reset *reset = find_reset(agent_id, scmi_id);

	if (reset == NULL) {
	return SCMI_NOT_FOUND;
	}

	/* Supports only reset with context loss */
	if (state != 0U) {
	return SCMI_NOT_SUPPORTED;
	}

	NOTICE("SCMI reset on ID %lu/%s\n",
	reset->reset_id, plat_scmi_rstd_get_name(agent_id, scmi_id));

	return SCMI_SUCCESS;
	}

	int32_t plat_scmi_rstd_set_state(unsigned int agent_id, unsigned int scmi_id,
	bool assert_not_deassert)
	{
	const struct scmi_reset *reset = find_reset(agent_id, scmi_id);

	if (reset == NULL) {
	return SCMI_NOT_FOUND;
	}

	if (assert_not_deassert) {
	NOTICE("SCMI reset %lu/%s set\n",
	reset->reset_id, plat_scmi_rstd_get_name(agent_id, scmi_id));

	switch (scmi_id) {
	case RESET_UFS0_0:
	mmio_write_32(PMXC_CRP_RST_UFS, 1);
	break;
	case RESET_UFSPHY_0:
	mmio_write_32(PMXC_IOU_SLCR_PHY_RESET, 1);
	break;
	default:
	break;
	}
	} else {
	NOTICE("SCMI reset %lu/%s release\n",
	reset->reset_id, plat_scmi_rstd_get_name(agent_id, scmi_id));

	switch (scmi_id) {
	case RESET_UFS0_0:
	mmio_write_32(PMXC_CRP_RST_UFS, 0);
	break;
	case RESET_UFSPHY_0:
	mmio_write_32(PMXC_IOU_SLCR_PHY_RESET, 0);
	break;
	default:
	break;
	}
	}

	return SCMI_SUCCESS;
	}

	/*
	* Platform SCMI reset domains
	*/
	static struct scmi_pd *find_pd(unsigned int agent_id, unsigned int pd_id)
	{
	const struct scmi_resources *resource = find_resource(agent_id);
	size_t n;

	if (resource != NULL) {
	for (n = 0U; n < resource->pd_count; n++) {
	if (n == pd_id) {
	return &resource->pd[n];
	}
	}
	}

	return NULL;
	}

	size_t plat_scmi_pd_count(unsigned int agent_id)
	{
	const struct scmi_resources *resource = find_resource(agent_id);
	size_t ret;

	if (resource == NULL) {
	ret = 0U;
	} else {
	ret = resource->pd_count;

	NOTICE("SCMI: PD: %d\n", (unsigned int)ret);
	}
	return ret;
	}

	const char *plat_scmi_pd_get_name(unsigned int agent_id, unsigned int pd_id)
	{
	const struct scmi_pd *pd = find_pd(agent_id, pd_id);

	if (pd == NULL) {
	return NULL;
	}

	return pd->name;
	}

	unsigned int plat_scmi_pd_statistics(unsigned int agent_id, unsigned long *pd_id)
	{
	return 0U;
	}

	unsigned int plat_scmi_pd_get_attributes(unsigned int agent_id, unsigned int pd_id)
	{
	return 0U;
	}

	unsigned int plat_scmi_pd_get_state(unsigned int agent_id, unsigned int pd_id)
	{
	const struct scmi_pd *pd = find_pd(agent_id, pd_id);

	if (pd == NULL) {
	return SCMI_NOT_SUPPORTED;
	}

	NOTICE("SCMI: PD: get id: %d, state: %x\n", pd_id, pd->state);

	return pd->state;
	}

	int32_t plat_scmi_pd_set_state(unsigned int agent_id, unsigned int flags, unsigned int pd_id,
	unsigned int state)
	{
	struct scmi_pd *pd = find_pd(agent_id, pd_id);

	if (pd == NULL) {
	return SCMI_NOT_SUPPORTED;
	}

	NOTICE("SCMI: PD: set id: %d, orig state: %x, new state: %x, flags: %x\n",
	pd_id, pd->state, state, flags);

	pd->state = state;

	return 0U;
	}


	/* Currently only one channel is supported. Expectation is that channel 0 is used by NS SW */
	static struct scmi_msg_channel scmi_channel[] = {
	[0] = {
	.shm_addr = SMT_BUFFER_BASE,
	.shm_size = SMT_BUF_SLOT_SIZE,
	},
	};

	struct scmi_msg_channel *plat_scmi_get_channel(unsigned int agent_id)
	{
	assert(agent_id < ARRAY_SIZE(scmi_channel));

	VERBOSE("%d: SCMI asking for channel\n", agent_id);

	/* Just in case that code is reused */
	return &scmi_channel[agent_id];
	}

	/* Base protocol implementations */
	const char *plat_scmi_vendor_name(void)
	{
	return SCMI_VENDOR;
	}

	const char *plat_scmi_sub_vendor_name(void)
	{
	return SCMI_PRODUCT;
	}

	/* Currently supporting Clocks and Reset Domains */
	static const uint8_t plat_protocol_list[] = {
	SCMI_PROTOCOL_ID_BASE,
	SCMI_PROTOCOL_ID_CLOCK,
	SCMI_PROTOCOL_ID_RESET_DOMAIN,
	SCMI_PROTOCOL_ID_POWER_DOMAIN,
	/* SCMI_PROTOCOL_ID_SENSOR, */
	0U /* Null termination */
	};

	size_t plat_scmi_protocol_count(void)
	{
	const size_t count = ARRAY_SIZE(plat_protocol_list) - 1U;

	VERBOSE("SCMI: Protocol count: %d\n", (int32_t)count);

	return count;
	}

	const uint8_t *plat_scmi_protocol_list(unsigned int agent_id __unused)
	{
	return plat_protocol_list;
	}

	void init_scmi_server(void)
	{
	size_t i;
	int32_t ret;

	for (i = 0U; i < ARRAY_SIZE(scmi_channel); i++)
	scmi_smt_init_agent_channel(&scmi_channel[i]);

	INFO("SCMI: Server initialized\n");

	if (platform_id == QEMU) {
	/* default setting is for QEMU */
	} else if (platform_id == SPP) {
	for (i = 0U; i < ARRAY_SIZE(scmi0_clock); i++) {

	/* Keep i2c on 100MHz to calculate rates properly */
	if ((i >= CLK_I2C0_0) && (i <= CLK_I2C7_0))
	continue;

	/* Keep UFS clocks to default values to get the expected rates */
	if (i >= CLK_UFS0_0 && i <= CLK_UFS0_2)
	continue;

	/*
	* SPP supports multiple versions.
	* The cpu_clock value is set to corresponding SPP
	* version in early platform setup, resuse the same
	* value here.
	*/
	ret = plat_scmi_clock_set_rate(0, i, cpu_clock);
	if (ret < 0) {
	NOTICE("Failed to set clock rate for SPP scmi_id=%ld\n", i);
	}
	}
	} else {
	/* Making MISRA C 2012 15.7 compliant */
	}
	}