1 /* 2 * Texas Instruments System Control Interface API 3 * Based on Linux and U-Boot implementation 4 * 5 * Copyright (C) 2018-2022 Texas Instruments Incorporated - https://www.ti.com/ 6 * 7 * SPDX-License-Identifier: BSD-3-Clause 8 */ 9 10 #ifndef TI_SCI_H 11 #define TI_SCI_H 12 13 #include <stdint.h> 14 #include <stdbool.h> 15 16 /** 17 * Device control operations 18 * 19 * - ti_sci_device_get - command to request for device managed by TISCI 20 * - ti_sci_device_get_exclusive - exclusively request a device 21 * - ti_sci_device_idle - Command to idle a device managed by TISCI 22 * - ti_sci_device_idle_exclusive - exclusively idle a device 23 * - ti_sci_device_put - command to release a device managed by TISCI 24 * - ti_sci_device_put_no_wait - release a device without waiting for response 25 * - ti_sci_device_is_valid - Is the device valid 26 * - ti_sci_device_get_clcnt - Get context loss counter 27 * @count: Pointer to Context Loss counter to populate 28 * - ti_sci_device_is_idle - Check if the device is requested to be idle 29 * @r_state: true if requested to be idle 30 * - ti_sci_device_is_stop - Check if the device is requested to be stopped 31 * @r_state: true if requested to be stopped 32 * @curr_state: true if currently stopped. 33 * - ti_sci_device_is_on - Check if the device is requested to be ON 34 * @r_state: true if requested to be ON 35 * @curr_state: true if currently ON and active 36 * - ti_sci_device_is_trans - Check if the device is currently transitioning 37 * @curr_state: true if currently transitioning. 38 * - ti_sci_device_set_resets - Command to set resets for 39 * device managed by TISCI 40 * @reset_state: Device specific reset bit field 41 * - ti_sci_device_get_resets - Get reset state for device managed by TISCI 42 * @reset_state: Pointer to reset state to populate 43 * 44 * NOTE: for all these functions, the following are generic in nature: 45 * @id: Device Identifier 46 * Returns 0 for successful request, else returns corresponding error message. 47 * 48 * Request for the device - NOTE: the client MUST maintain integrity of 49 * usage count by balancing get_device with put_device. No refcounting is 50 * managed by driver for that purpose. 51 */ 52 int ti_sci_device_get(uint32_t id); 53 int ti_sci_device_get_exclusive(uint32_t id); 54 int ti_sci_device_idle(uint32_t id); 55 int ti_sci_device_idle_exclusive(uint32_t id); 56 int ti_sci_device_put(uint32_t id); 57 int ti_sci_device_put_no_wait(uint32_t id); 58 int ti_sci_device_is_valid(uint32_t id); 59 int ti_sci_device_get_clcnt(uint32_t id, uint32_t *count); 60 int ti_sci_device_is_idle(uint32_t id, bool *r_state); 61 int ti_sci_device_is_stop(uint32_t id, bool *r_state, bool *curr_state); 62 int ti_sci_device_is_on(uint32_t id, bool *r_state, bool *curr_state); 63 int ti_sci_device_is_trans(uint32_t id, bool *curr_state); 64 int ti_sci_device_set_resets(uint32_t id, uint32_t reset_state); 65 int ti_sci_device_get_resets(uint32_t id, uint32_t *reset_state); 66 67 /** 68 * Clock control operations 69 * 70 * - ti_sci_clock_get - Get control of a clock from TI SCI 71 * @needs_ssc: 'true' iff Spread Spectrum clock is desired 72 * @can_change_freq: 'true' iff frequency change is desired 73 * @enable_input_term: 'true' iff input termination is desired 74 * - ti_sci_clock_idle - Idle a clock which is in our control 75 * - ti_sci_clock_put - Release a clock from our control 76 * - ti_sci_clock_is_auto - Is the clock being auto managed 77 * @req_state: state indicating if the clock is auto managed 78 * - ti_sci_clock_is_on - Is the clock ON 79 * @req_state: state indicating if the clock is managed by us and enabled 80 * @curr_state: state indicating if the clock is ready for operation 81 * - ti_sci_clock_is_off - Is the clock OFF 82 * @req_state: state indicating if the clock is managed by us and disabled 83 * @curr_state: state indicating if the clock is NOT ready for operation 84 * - ti_sci_clock_set_parent - Set the clock source of a specific device clock 85 * @parent_id: Parent clock identifier to set 86 * - ti_sci_clock_get_parent - Get current parent clock source 87 * @parent_id: Current clock parent 88 * - ti_sci_clock_get_num_parents - Get num parents of the current clk source 89 * @num_parents: Returns he number of parents to the current clock. 90 * - ti_sci_clock_get_match_freq - Find a good match for frequency 91 * @match_freq: Frequency match in Hz response. 92 * - ti_sci_clock_set_freq - Set a frequency for clock 93 * - ti_sci_clock_get_freq - Get current frequency 94 * @freq: Currently frequency in Hz 95 * 96 * NOTE: for all these functions, the following are generic in nature: 97 * @dev_id: Device identifier this request is for 98 * @clk_id: Clock identifier for the device for this request. 99 * Each device has its own set of clock inputs. This indexes 100 * which clock input to modify. 101 * @min_freq: The minimum allowable frequency in Hz. This is the minimum 102 * allowable programmed frequency and does not account for clock 103 * tolerances and jitter. 104 * @target_freq: The target clock frequency in Hz. A frequency will be 105 * processed as close to this target frequency as possible. 106 * @max_freq: The maximum allowable frequency in Hz. This is the maximum 107 * allowable programmed frequency and does not account for clock 108 * tolerances and jitter. 109 * Returns 0 for successful request, else returns corresponding error message. 110 * 111 * Request for the clock - NOTE: the client MUST maintain integrity of 112 * usage count by balancing get_clock with put_clock. No refcounting is 113 * managed by driver for that purpose. 114 */ 115 int ti_sci_clock_get(uint32_t dev_id, uint8_t clk_id, 116 bool needs_ssc, bool can_change_freq, 117 bool enable_input_term); 118 int ti_sci_clock_idle(uint32_t dev_id, uint8_t clk_id); 119 int ti_sci_clock_put(uint32_t dev_id, uint8_t clk_id); 120 int ti_sci_clock_is_auto(uint32_t dev_id, uint8_t clk_id, 121 bool *req_state); 122 int ti_sci_clock_is_on(uint32_t dev_id, uint8_t clk_id, 123 bool *req_state, bool *curr_state); 124 int ti_sci_clock_is_off(uint32_t dev_id, uint8_t clk_id, 125 bool *req_state, bool *curr_state); 126 int ti_sci_clock_set_parent(uint32_t dev_id, uint8_t clk_id, 127 uint8_t parent_id); 128 int ti_sci_clock_get_parent(uint32_t dev_id, uint8_t clk_id, 129 uint8_t *parent_id); 130 int ti_sci_clock_get_num_parents(uint32_t dev_id, uint8_t clk_id, 131 uint8_t *num_parents); 132 int ti_sci_clock_get_match_freq(uint32_t dev_id, uint8_t clk_id, 133 uint64_t min_freq, uint64_t target_freq, 134 uint64_t max_freq, uint64_t *match_freq); 135 int ti_sci_clock_set_freq(uint32_t dev_id, uint8_t clk_id, 136 uint64_t min_freq, uint64_t target_freq, 137 uint64_t max_freq); 138 int ti_sci_clock_get_freq(uint32_t dev_id, uint8_t clk_id, uint64_t *freq); 139 140 /** 141 * Core control operations 142 * 143 * - ti_sci_core_reboot() - Command to request system reset 144 * 145 * Return: 0 if all went well, else returns appropriate error value. 146 */ 147 int ti_sci_core_reboot(void); 148 149 /** 150 * Processor control operations 151 * 152 * - ti_sci_proc_request - Command to request a physical processor control 153 * - ti_sci_proc_release - Command to release a physical processor control 154 * - ti_sci_proc_handover - Command to handover a physical processor control to 155 * a host in the processor's access control list. 156 * @host_id: Host ID to get the control of the processor 157 * - ti_sci_proc_set_boot_cfg - Command to set the processor boot configuration flags 158 * @config_flags_set: Configuration flags to be set 159 * @config_flags_clear: Configuration flags to be cleared. 160 * - ti_sci_proc_set_boot_ctrl - Command to set the processor boot control flags 161 * @control_flags_set: Control flags to be set 162 * @control_flags_clear: Control flags to be cleared 163 * - ti_sci_proc_set_boot_ctrl_no_wait - Same as above without waiting for response 164 * - ti_sci_proc_auth_boot_image - Command to authenticate and load the image 165 * and then set the processor configuration flags. 166 * @cert_addr: Memory address at which payload image certificate is located. 167 * - ti_sci_proc_get_boot_status - Command to get the processor boot status 168 * - ti_sci_proc_wait_boot_status - Command to wait for a processor boot status 169 * - ti_sci_proc_wait_boot_status_no_wait - Same as above without waiting for response 170 * 171 * NOTE: for all these functions, the following are generic in nature: 172 * @proc_id: Processor ID 173 * Returns 0 for successful request, else returns corresponding error message. 174 */ 175 int ti_sci_proc_request(uint8_t proc_id); 176 int ti_sci_proc_release(uint8_t proc_id); 177 int ti_sci_proc_handover(uint8_t proc_id, uint8_t host_id); 178 int ti_sci_proc_set_boot_cfg(uint8_t proc_id, uint64_t bootvector, 179 uint32_t config_flags_set, 180 uint32_t config_flags_clear); 181 int ti_sci_proc_set_boot_ctrl(uint8_t proc_id, uint32_t control_flags_set, 182 uint32_t control_flags_clear); 183 int ti_sci_proc_set_boot_ctrl_no_wait(uint8_t proc_id, 184 uint32_t control_flags_set, 185 uint32_t control_flags_clear); 186 int ti_sci_proc_auth_boot_image(uint8_t proc_id, uint64_t cert_addr); 187 int ti_sci_proc_get_boot_status(uint8_t proc_id, uint64_t *bv, 188 uint32_t *cfg_flags, 189 uint32_t *ctrl_flags, 190 uint32_t *sts_flags); 191 int ti_sci_proc_wait_boot_status(uint8_t proc_id, uint8_t num_wait_iterations, 192 uint8_t num_match_iterations, 193 uint8_t delay_per_iteration_us, 194 uint8_t delay_before_iterations_us, 195 uint32_t status_flags_1_set_all_wait, 196 uint32_t status_flags_1_set_any_wait, 197 uint32_t status_flags_1_clr_all_wait, 198 uint32_t status_flags_1_clr_any_wait); 199 int ti_sci_proc_wait_boot_status_no_wait(uint8_t proc_id, 200 uint8_t num_wait_iterations, 201 uint8_t num_match_iterations, 202 uint8_t delay_per_iteration_us, 203 uint8_t delay_before_iterations_us, 204 uint32_t status_flags_1_set_all_wait, 205 uint32_t status_flags_1_set_any_wait, 206 uint32_t status_flags_1_clr_all_wait, 207 uint32_t status_flags_1_clr_any_wait); 208 209 /** 210 * System Low Power Operations 211 * 212 * - ti_sci_enter_sleep - Command to initiate system transition into suspend. 213 * @proc_id: Processor ID. 214 * @mode: Low power mode to enter. 215 * @core_resume_addr: Address that core should be resumed from 216 * after low power transition. 217 * 218 * NOTE: for all these functions, the following are generic in nature: 219 * Returns 0 for successful request, else returns corresponding error message. 220 */ 221 int ti_sci_enter_sleep(uint8_t proc_id, 222 uint8_t mode, 223 uint64_t core_resume_addr); 224 225 /** 226 * ti_sci_init() - Basic initialization 227 * 228 * Return: 0 if all goes good, else appropriate error message. 229 */ 230 int ti_sci_init(void); 231 232 #endif /* TI_SCI_H */ 233
