/* * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ /*! * Header file containing the public API for the System Controller (SC) * Power Management (PM) function. This includes functions for power state * control, clock control, reset control, and wake-up event control. * * @addtogroup PM_SVC (SVC) Power Management Service * * Module for the Power Management (PM) service. * * @{ */ #ifndef SCI_PM_API_H #define SCI_PM_API_H /* Includes */ #include #include /* Defines */ /*! * @name Defines for type widths */ /*@{*/ #define SC_PM_POWER_MODE_W 2 /* Width of sc_pm_power_mode_t */ #define SC_PM_CLOCK_MODE_W 3 /* Width of sc_pm_clock_mode_t */ #define SC_PM_RESET_TYPE_W 2 /* Width of sc_pm_reset_type_t */ #define SC_PM_RESET_REASON_W 3 /* Width of sc_pm_reset_reason_t */ /*@}*/ /*! * @name Defines for clock indexes (sc_pm_clk_t) */ /*@{*/ /*@}*/ /*! * @name Defines for ALL parameters */ /*@{*/ #define SC_PM_CLK_ALL UINT8_MAX /* All clocks */ /*@}*/ /*! * @name Defines for sc_pm_power_mode_t */ /*@{*/ #define SC_PM_PW_MODE_OFF 0U /* Power off */ #define SC_PM_PW_MODE_STBY 1U /* Power in standby */ #define SC_PM_PW_MODE_LP 2U /* Power in low-power */ #define SC_PM_PW_MODE_ON 3U /* Power on */ /*@}*/ /*! * @name Defines for sc_pm_clk_t */ /*@{*/ #define SC_PM_CLK_SLV_BUS 0U /* Slave bus clock */ #define SC_PM_CLK_MST_BUS 1U /* Master bus clock */ #define SC_PM_CLK_PER 2U /* Peripheral clock */ #define SC_PM_CLK_PHY 3U /* Phy clock */ #define SC_PM_CLK_MISC 4U /* Misc clock */ #define SC_PM_CLK_MISC0 0U /* Misc 0 clock */ #define SC_PM_CLK_MISC1 1U /* Misc 1 clock */ #define SC_PM_CLK_MISC2 2U /* Misc 2 clock */ #define SC_PM_CLK_MISC3 3U /* Misc 3 clock */ #define SC_PM_CLK_MISC4 4U /* Misc 4 clock */ #define SC_PM_CLK_CPU 2U /* CPU clock */ #define SC_PM_CLK_PLL 4U /* PLL */ #define SC_PM_CLK_BYPASS 4U /* Bypass clock */ /*@}*/ /*! * @name Defines for sc_pm_clk_mode_t */ /*@{*/ #define SC_PM_CLK_MODE_ROM_INIT 0U /* Clock is initialized by ROM. */ #define SC_PM_CLK_MODE_OFF 1U /* Clock is disabled */ #define SC_PM_CLK_MODE_ON 2U /* Clock is enabled. */ #define SC_PM_CLK_MODE_AUTOGATE_SW 3U /* Clock is in SW autogate mode */ #define SC_PM_CLK_MODE_AUTOGATE_HW 4U /* Clock is in HW autogate mode */ #define SC_PM_CLK_MODE_AUTOGATE_SW_HW 5U /* Clock is in SW-HW autogate mode */ /*@}*/ /*! * @name Defines for sc_pm_clk_parent_t */ /*@{*/ #define SC_PM_PARENT_XTAL 0U /* Parent is XTAL. */ #define SC_PM_PARENT_PLL0 1U /* Parent is PLL0 */ #define SC_PM_PARENT_PLL1 2U /* Parent is PLL1 or PLL0/2 */ #define SC_PM_PARENT_PLL2 3U /* Parent in PLL2 or PLL0/4 */ #define SC_PM_PARENT_BYPS 4U /* Parent is a bypass clock. */ /*@}*/ /*! * @name Defines for sc_pm_reset_type_t */ /*@{*/ #define SC_PM_RESET_TYPE_COLD 0U /* Cold reset */ #define SC_PM_RESET_TYPE_WARM 1U /* Warm reset */ #define SC_PM_RESET_TYPE_BOARD 2U /* Board reset */ /*@}*/ /*! * @name Defines for sc_pm_reset_cause_t */ /*@{*/ #define SC_PM_RESET_CAUSE_TEMP 0U /* Reset due to temp panic alarm */ #define SC_PM_RESET_CAUSE_FAULT 1U /* Reset due to fault exception */ #define SC_PM_RESET_CAUSE_IRQ 2U /* Reset due to SCU reset IRQ */ #define SC_PM_RESET_CAUSE_WDOG 3U /* Reset due to SW WDOG */ #define SC_PM_RESET_CAUSE_API 4U /* Reset due to pm_reset() or monitor */ /*@}*/ /*! * @name Defines for sc_pm_reset_reason_t */ /*@{*/ #define SC_PM_RESET_REASON_POR 0U /* Power on reset */ #define SC_PM_RESET_REASON_WARM 1U /* Warm reset */ #define SC_PM_RESET_REASON_SW 2U /* Software reset */ #define SC_PM_RESET_REASON_WDOG 3U /* Watchdog reset */ #define SC_PM_RESET_REASON_LOCKUP 4U /* Lockup reset */ #define SC_PM_RESET_REASON_TAMPER 5U /* Tamper reset */ #define SC_PM_RESET_REASON_TEMP 6U /* Temp reset */ #define SC_PM_RESET_REASON_LOW_VOLT 7U /* Low voltage reset */ /*@}*/ /*! * @name Defines for sc_pm_sys_if_t */ /*@{*/ #define SC_PM_SYS_IF_INTERCONNECT 0U /* System interconnect */ #define SC_PM_SYS_IF_MU 1U /* AP -> SCU message units */ #define SC_PM_SYS_IF_OCMEM 2U /* On-chip memory (ROM/OCRAM) */ #define SC_PM_SYS_IF_DDR 3U /* DDR memory */ /*@}*/ /*! * @name Defines for sc_pm_wake_src_t */ /*@{*/ #define SC_PM_WAKE_SRC_NONE 0U /* No wake source, used for self-kill */ #define SC_PM_WAKE_SRC_SCU 1U /* Wakeup from SCU to resume CPU (IRQSTEER & GIC powered down) */ #define SC_PM_WAKE_SRC_IRQSTEER 2U /* Wakeup from IRQSTEER to resume CPU (GIC powered down) */ #define SC_PM_WAKE_SRC_IRQSTEER_GIC 3U /* Wakeup from IRQSTEER+GIC to wake CPU (GIC clock gated) */ #define SC_PM_WAKE_SRC_GIC 4U /* Wakeup from GIC to wake CPU */ /*@}*/ /* Types */ /*! * This type is used to declare a power mode. Note resources only use * SC_PM_PW_MODE_OFF and SC_PM_PW_MODE_ON. The other modes are used only * as system power modes. */ typedef uint8_t sc_pm_power_mode_t; /*! * This type is used to declare a clock. */ typedef uint8_t sc_pm_clk_t; /*! * This type is used to declare a clock mode. */ typedef uint8_t sc_pm_clk_mode_t; /*! * This type is used to declare the clock parent. */ typedef uint8_t sc_pm_clk_parent_t; /*! * This type is used to declare clock rates. */ typedef uint32_t sc_pm_clock_rate_t; /*! * This type is used to declare a desired reset type. */ typedef uint8_t sc_pm_reset_type_t; /*! * This type is used to declare a desired reset type. */ typedef uint8_t sc_pm_reset_cause; /*! * This type is used to declare a reason for a reset. */ typedef uint8_t sc_pm_reset_reason_t; /*! * This type is used to specify a system-level interface to be power managed. */ typedef uint8_t sc_pm_sys_if_t; /*! * This type is used to specify a wake source for CPU resources. */ typedef uint8_t sc_pm_wake_src_t; /* Functions */ /*! * @name Power Functions * @{ */ /*! * This function sets the system power mode. Only the owner of the * SC_R_SYSTEM resource can do this. * * @param[in] ipc IPC handle * @param[in] mode power mode to apply * * @return Returns an error code (SC_ERR_NONE = success). * * Return errors: * - SC_ERR_PARM if invalid mode, * - SC_ERR_NOACCESS if caller not the owner of SC_R_SYSTEM * * @see sc_pm_set_sys_power_mode(). */ sc_err_t sc_pm_set_sys_power_mode(sc_ipc_t ipc, sc_pm_power_mode_t mode); /*! * This function sets the power mode of a partition. * * @param[in] ipc IPC handle * @param[in] pt handle of partition * @param[in] mode power mode to apply * * @return Returns an error code (SC_ERR_NONE = success). * * Return errors: * - SC_ERR_PARM if invalid partition or mode, * - SC_ERR_NOACCESS if caller's partition is not the owner or * parent of \a pt * * The power mode of the partitions is a max power any resource will * be set to. Calling this will result in all resources owned * by \a pt to have their power changed to the lower of \a mode or the * individual resource mode set using sc_pm_set_resource_power_mode(). */ sc_err_t sc_pm_set_partition_power_mode(sc_ipc_t ipc, sc_rm_pt_t pt, sc_pm_power_mode_t mode); /*! * This function gets the power mode of a partition. * * @param[in] ipc IPC handle * @param[in] pt handle of partition * @param[out] mode pointer to return power mode * * @return Returns an error code (SC_ERR_NONE = success). * * Return errors: * - SC_ERR_PARM if invalid partition */ sc_err_t sc_pm_get_sys_power_mode(sc_ipc_t ipc, sc_rm_pt_t pt, sc_pm_power_mode_t *mode); /*! * This function sets the power mode of a resource. * * @param[in] ipc IPC handle * @param[in] resource ID of the resource * @param[in] mode power mode to apply * * @return Returns an error code (SC_ERR_NONE = success). * * Return errors: * - SC_ERR_PARM if invalid resource or mode, * - SC_ERR_NOACCESS if caller's partition is not the resource owner * or parent of the owner * * This function will record the individual resource power mode * and change it if the requested mode is lower than or equal to the * partition power mode set with sc_pm_set_partition_power_mode(). * In other words, the power mode of the resource will be the minimum * of the resource power mode and the partition power mode. * * Note some resources are still not accessible even when powered up if bus * transactions go through a fabric not powered up. Examples of this are * resources in display and capture subsystems which require the display * controller or the imaging subsytem to be powered up first. * * Not that resources are grouped into power domains by the underlying * hardware. If any resource in the domain is on, the entire power domain * will be on. Other power domains required to access the resource will * also be turned on. Clocks required to access the peripheral will be * turned on. Refer to the SoC RM for more info on power domains and access * infrastructure (bus fabrics, clock domains, etc.). */ sc_err_t sc_pm_set_resource_power_mode(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_power_mode_t mode); /*! * This function gets the power mode of a resource. * * @param[in] ipc IPC handle * @param[in] resource ID of the resource * @param[out] mode pointer to return power mode * * @return Returns an error code (SC_ERR_NONE = success). * * Note only SC_PM_PW_MODE_OFF and SC_PM_PW_MODE_ON are valid. The value * returned does not reflect the power mode of the partition.. */ sc_err_t sc_pm_get_resource_power_mode(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_power_mode_t *mode); /*! * This function requests the low power mode some of the resources * can enter based on their state. This API is only valid for the * following resources : SC_R_A53, SC_R_A53_0, SC_R_A53_1, SC_A53_2, * SC_A53_3, SC_R_A72, SC_R_A72_0, SC_R_A72_1, SC_R_CC1, SC_R_A35, * SC_R_A35_0, SC_R_A35_1, SC_R_A35_2, SC_R_A35_3. * For all other resources it will return SC_ERR_PARAM. * This function will set the low power mode the cores, cluster * and cluster associated resources will enter when all the cores * in a given cluster execute WFI * * @param[in] ipc IPC handle * @param[in] resource ID of the resource * @param[in] mode power mode to apply * * @return Returns an error code (SC_ERR_NONE = success). * */ sc_err_t sc_pm_req_low_power_mode(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_power_mode_t mode); /*! * This function requests low-power mode entry for CPU/cluster * resources. This API is only valid for the following resources: * SC_R_A53, SC_R_A53_x, SC_R_A72, SC_R_A72_x, SC_R_A35, SC_R_A35_x, * SC_R_CCI. For all other resources it will return SC_ERR_PARAM. * For individual core resources, the specified power mode * and wake source will be applied after the core has entered * WFI. For cluster resources, the specified power mode is * applied after all cores in the cluster have entered low-power mode. * For multicluster resources, the specified power mode is applied * after all clusters have reached low-power mode. * * @param[in] ipc IPC handle * @param[in] resource ID of the resource * @param[in] mode power mode to apply * @param[in] wake_src wake source for low-power exit * * @return Returns an error code (SC_ERR_NONE = success). * */ sc_err_t sc_pm_req_cpu_low_power_mode(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_power_mode_t mode, sc_pm_wake_src_t wake_src); /*! * This function is used to set the resume address of a CPU. * * @param[in] ipc IPC handle * @param[in] resource ID of the CPU resource * @param[in] address 64-bit resume address * * @return Returns an error code (SC_ERR_NONE = success). * * Return errors: * - SC_ERR_PARM if invalid resource or address, * - SC_ERR_NOACCESS if caller's partition is not the parent of the * resource (CPU) owner */ sc_err_t sc_pm_set_cpu_resume_addr(sc_ipc_t ipc, sc_rsrc_t resource, sc_faddr_t address); /*! * This function is used to set parameters for CPU resume from * low-power mode. * * @param[in] ipc IPC handle * @param[in] resource ID of the CPU resource * @param[in] isPrimary set SC_TRUE if primary wake CPU * @param[in] address 64-bit resume address * * @return Returns an error code (SC_ERR_NONE = success). * * Return errors: * - SC_ERR_PARM if invalid resource or address, * - SC_ERR_NOACCESS if caller's partition is not the parent of the * resource (CPU) owner */ sc_err_t sc_pm_set_cpu_resume(sc_ipc_t ipc, sc_rsrc_t resource, sc_bool_t isPrimary, sc_faddr_t address); /*! * This function requests the power mode configuration for system-level * interfaces including messaging units, interconnect, and memories. This API * is only valid for the following resources : SC_R_A53, SC_R_A72, and * SC_R_M4_x_PID_y. For all other resources, it will return SC_ERR_PARAM. * The requested power mode will be captured and applied to system-level * resources as system conditions allow. * * @param[in] ipc IPC handle * @param[in] resource ID of the resource * @param[in] sys_if system-level interface to be configured * @param[in] hpm high-power mode for the system interface * @param[in] lpm low-power mode for the system interface * * @return Returns an error code (SC_ERR_NONE = success). * */ sc_err_t sc_pm_req_sys_if_power_mode(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_sys_if_t sys_if, sc_pm_power_mode_t hpm, sc_pm_power_mode_t lpm); /* @} */ /*! * @name Clock/PLL Functions * @{ */ /*! * This function sets the rate of a resource's clock/PLL. * * @param[in] ipc IPC handle * @param[in] resource ID of the resource * @param[in] clk clock/PLL to affect * @param[in,out] rate pointer to rate to set, * return actual rate * @return Returns an error code (SC_ERR_NONE = success). * * Return errors: * - SC_ERR_PARM if invalid resource or clock/PLL, * - SC_ERR_NOACCESS if caller's partition is not the resource owner * or parent of the owner, * - SC_ERR_UNAVAILABLE if clock/PLL not applicable to this resource, * - SC_ERR_LOCKED if rate locked (usually because shared clock/PLL) * * Refer to the [Clock List](@ref CLOCKS) for valid clock/PLL values. */ sc_err_t sc_pm_set_clock_rate(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_clk_t clk, sc_pm_clock_rate_t *rate); /*! * This function gets the rate of a resource's clock/PLL. * * @param[in] ipc IPC handle * @param[in] resource ID of the resource * @param[in] clk clock/PLL to affect * @param[out] rate pointer to return rate * * @return Returns an error code (SC_ERR_NONE = success). * * Return errors: * - SC_ERR_PARM if invalid resource or clock/PLL, * - SC_ERR_NOACCESS if caller's partition is not the resource owner * or parent of the owner, * - SC_ERR_UNAVAILABLE if clock/PLL not applicable to this resource * * Refer to the [Clock List](@ref CLOCKS) for valid clock/PLL values. */ sc_err_t sc_pm_get_clock_rate(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_clk_t clk, sc_pm_clock_rate_t *rate); /*! * This function enables/disables a resource's clock. * * @param[in] ipc IPC handle * @param[in] resource ID of the resource * @param[in] clk clock to affect * @param[in] enable enable if SC_TRUE; otherwise disabled * @param[in] autog HW auto clock gating * * If \a resource is SC_R_ALL then all resources owned will be affected. * No error will be returned. * * If \a clk is SC_PM_CLK_ALL, then an error will be returned if any * of the available clocks returns an error. * * @return Returns an error code (SC_ERR_NONE = success). * * Return errors: * - SC_ERR_PARM if invalid resource or clock, * - SC_ERR_NOACCESS if caller's partition is not the resource owner * or parent of the owner, * - SC_ERR_UNAVAILABLE if clock not applicable to this resource * * Refer to the [Clock List](@ref CLOCKS) for valid clock values. */ sc_err_t sc_pm_clock_enable(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_clk_t clk, sc_bool_t enable, sc_bool_t autog); /*! * This function sets the parent of a resource's clock. * This function should only be called when the clock is disabled. * * @param[in] ipc IPC handle * @param[in] resource ID of the resource * @param[in] clk clock to affect * @param[in] parent New parent of the clock. * * @return Returns an error code (SC_ERR_NONE = success). * * Return errors: * - SC_ERR_PARM if invalid resource or clock, * - SC_ERR_NOACCESS if caller's partition is not the resource owner * or parent of the owner, * - SC_ERR_UNAVAILABLE if clock not applicable to this resource * - SC_ERR_BUSY if clock is currently enabled. * - SC_ERR_NOPOWER if resource not powered * * Refer to the [Clock List](@ref CLOCKS) for valid clock values. */ sc_err_t sc_pm_set_clock_parent(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_clk_t clk, sc_pm_clk_parent_t parent); /*! * This function gets the parent of a resource's clock. * * @param[in] ipc IPC handle * @param[in] resource ID of the resource * @param[in] clk clock to affect * @param[out] parent pointer to return parent of clock. * * @return Returns an error code (SC_ERR_NONE = success). * * Return errors: * - SC_ERR_PARM if invalid resource or clock, * - SC_ERR_NOACCESS if caller's partition is not the resource owner * or parent of the owner, * - SC_ERR_UNAVAILABLE if clock not applicable to this resource * * Refer to the [Clock List](@ref CLOCKS) for valid clock values. */ sc_err_t sc_pm_get_clock_parent(sc_ipc_t ipc, sc_rsrc_t resource, sc_pm_clk_t clk, sc_pm_clk_parent_t *parent); /* @} */ /*! * @name Reset Functions * @{ */ /*! * This function is used to reset the system. Only the owner of the * SC_R_SYSTEM resource can do this. * * @param[in] ipc IPC handle * @param[in] type reset type * * @return Returns an error code (SC_ERR_NONE = success). * * Return errors: * - SC_ERR_PARM if invalid type, * - SC_ERR_NOACCESS if caller not the owner of SC_R_SYSTEM * * If this function returns, then the reset did not occur due to an * invalid parameter. */ sc_err_t sc_pm_reset(sc_ipc_t ipc, sc_pm_reset_type_t type); /*! * This function gets a caller's reset reason. * * @param[in] ipc IPC handle * @param[out] reason pointer to return reset reason * * @return Returns an error code (SC_ERR_NONE = success). */ sc_err_t sc_pm_reset_reason(sc_ipc_t ipc, sc_pm_reset_reason_t *reason); /*! * This function is used to boot a partition. * * @param[in] ipc IPC handle * @param[in] pt handle of partition to boot * @param[in] resource_cpu ID of the CPU resource to start * @param[in] boot_addr 64-bit boot address * @param[in] resource_mu ID of the MU that must be powered * @param[in] resource_dev ID of the boot device that must be powered * * @return Returns an error code (SC_ERR_NONE = success). * * Return errors: * - SC_ERR_PARM if invalid partition, resource, or addr, * - SC_ERR_NOACCESS if caller's partition is not the parent of the * partition to boot */ sc_err_t sc_pm_boot(sc_ipc_t ipc, sc_rm_pt_t pt, sc_rsrc_t resource_cpu, sc_faddr_t boot_addr, sc_rsrc_t resource_mu, sc_rsrc_t resource_dev); /*! * This function is used to reboot the caller's partition. * * @param[in] ipc IPC handle * @param[in] type reset type * * If \a type is SC_PM_RESET_TYPE_COLD, then most peripherals owned by * the calling partition will be reset if possible. SC state (partitions, * power, clocks, etc.) is reset. The boot SW of the booting CPU must be * able to handle peripherals that that are not reset. * * If \a type is SC_PM_RESET_TYPE_WARM, then only the boot CPU is reset. * SC state (partitions, power, clocks, etc.) are NOT reset. The boot SW * of the booting CPU must be able to handle peripherals and SC state that * that are not reset. * * If \a type is SC_PM_RESET_TYPE_BOARD, then return with no action. * * If this function returns, then the reset did not occur due to an * invalid parameter. */ void sc_pm_reboot(sc_ipc_t ipc, sc_pm_reset_type_t type); /*! * This function is used to reboot a partition. * * @param[in] ipc IPC handle * @param[in] pt handle of partition to reboot * @param[in] type reset type * * If \a type is SC_PM_RESET_TYPE_COLD, then most peripherals owned by * the calling partition will be reset if possible. SC state (partitions, * power, clocks, etc.) is reset. The boot SW of the booting CPU must be * able to handle peripherals that that are not reset. * * If \a type is SC_PM_RESET_TYPE_WARM, then only the boot CPU is reset. * SC state (partitions, power, clocks, etc.) are NOT reset. The boot SW * of the booting CPU must be able to handle peripherals and SC state that * that are not reset. * * If \a type is SC_PM_RESET_TYPE_BOARD, then return with no action. * * @return Returns an error code (SC_ERR_NONE = success). * * Return errors: * - SC_ERR_PARM if invalid partition or type * - SC_ERR_NOACCESS if caller's partition is not the parent of \a pt, * * Most peripherals owned by the partition will be reset if * possible. SC state (partitions, power, clocks, etc.) is reset. The * boot SW of the booting CPU must be able to handle peripherals that * that are not reset. */ sc_err_t sc_pm_reboot_partition(sc_ipc_t ipc, sc_rm_pt_t pt, sc_pm_reset_type_t type); /*! * This function is used to start/stop a CPU. * * @param[in] ipc IPC handle * @param[in] resource ID of the CPU resource * @param[in] enable start if SC_TRUE; otherwise stop * @param[in] address 64-bit boot address * * @return Returns an error code (SC_ERR_NONE = success). * * Return errors: * - SC_ERR_PARM if invalid resource or address, * - SC_ERR_NOACCESS if caller's partition is not the parent of the * resource (CPU) owner */ sc_err_t sc_pm_cpu_start(sc_ipc_t ipc, sc_rsrc_t resource, sc_bool_t enable, sc_faddr_t address); /* @} */ #endif /* SCI_PM_API_H */ /**@}*/