| /* |
| * Texas Instruments System Control Interface Driver |
| * Based on Linux and U-Boot implementation |
| * |
| * Copyright (C) 2018-2022 Texas Instruments Incorporated - https://www.ti.com/ |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <errno.h> |
| #include <stdbool.h> |
| #include <stddef.h> |
| #include <string.h> |
| |
| #include <platform_def.h> |
| #include <lib/bakery_lock.h> |
| |
| #include <common/debug.h> |
| #include <sec_proxy.h> |
| |
| #include "ti_sci_protocol.h" |
| #include "ti_sci.h" |
| |
| #if USE_COHERENT_MEM |
| __section(".tzfw_coherent_mem") |
| #endif |
| static uint8_t message_sequence; |
| |
| DEFINE_BAKERY_LOCK(ti_sci_xfer_lock); |
| |
| /** |
| * struct ti_sci_xfer - Structure representing a message flow |
| * @tx_message: Transmit message |
| * @rx_message: Receive message |
| */ |
| struct ti_sci_xfer { |
| struct k3_sec_proxy_msg tx_message; |
| struct k3_sec_proxy_msg rx_message; |
| }; |
| |
| /** |
| * ti_sci_setup_one_xfer() - Setup one message type |
| * |
| * @msg_type: Message type |
| * @msg_flags: Flag to set for the message |
| * @tx_buf: Buffer to be sent to mailbox channel |
| * @tx_message_size: transmit message size |
| * @rx_buf: Buffer to be received from mailbox channel |
| * @rx_message_size: receive message size |
| * |
| * Helper function which is used by various command functions that are |
| * exposed to clients of this driver for allocating a message traffic event. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| static int ti_sci_setup_one_xfer(uint16_t msg_type, uint32_t msg_flags, |
| void *tx_buf, |
| size_t tx_message_size, |
| void *rx_buf, |
| size_t rx_message_size, |
| struct ti_sci_xfer *xfer) |
| { |
| struct ti_sci_msg_hdr *hdr; |
| |
| /* Ensure we have sane transfer sizes */ |
| if (rx_message_size > TI_SCI_MAX_MESSAGE_SIZE || |
| tx_message_size > TI_SCI_MAX_MESSAGE_SIZE || |
| tx_message_size < sizeof(*hdr)) |
| return -ERANGE; |
| |
| hdr = (struct ti_sci_msg_hdr *)tx_buf; |
| hdr->seq = ++message_sequence; |
| hdr->type = msg_type; |
| hdr->host = TI_SCI_HOST_ID; |
| hdr->flags = msg_flags; |
| /* Request a response if rx_message_size is non-zero */ |
| if (rx_message_size != 0U) { |
| hdr->flags |= TI_SCI_FLAG_REQ_ACK_ON_PROCESSED; |
| } |
| |
| xfer->tx_message.buf = tx_buf; |
| xfer->tx_message.len = tx_message_size; |
| |
| xfer->rx_message.buf = rx_buf; |
| xfer->rx_message.len = rx_message_size; |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_get_response() - Receive response from mailbox channel |
| * |
| * @xfer: Transfer to initiate and wait for response |
| * @chan: Channel to receive the response |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| static int ti_sci_get_response(struct k3_sec_proxy_msg *msg, |
| enum k3_sec_proxy_chan_id chan) |
| { |
| struct ti_sci_msg_hdr *hdr; |
| unsigned int retry = 5; |
| int ret; |
| |
| for (; retry > 0; retry--) { |
| /* Receive the response */ |
| ret = k3_sec_proxy_recv(chan, msg); |
| if (ret) { |
| ERROR("Message receive failed (%d)\n", ret); |
| return ret; |
| } |
| |
| /* msg is updated by Secure Proxy driver */ |
| hdr = (struct ti_sci_msg_hdr *)msg->buf; |
| |
| /* Sanity check for message response */ |
| if (hdr->seq == message_sequence) |
| break; |
| else |
| WARN("Message with sequence ID %u is not expected\n", hdr->seq); |
| } |
| if (!retry) { |
| ERROR("Timed out waiting for message\n"); |
| return -EINVAL; |
| } |
| |
| if (msg->len > TI_SCI_MAX_MESSAGE_SIZE) { |
| ERROR("Unable to handle %lu xfer (max %d)\n", |
| msg->len, TI_SCI_MAX_MESSAGE_SIZE); |
| return -EINVAL; |
| } |
| |
| if (!(hdr->flags & TI_SCI_FLAG_RESP_GENERIC_ACK)) |
| return -ENODEV; |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_do_xfer() - Do one transfer |
| * |
| * @xfer: Transfer to initiate and wait for response |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| static int ti_sci_do_xfer(struct ti_sci_xfer *xfer) |
| { |
| struct k3_sec_proxy_msg *tx_msg = &xfer->tx_message; |
| struct k3_sec_proxy_msg *rx_msg = &xfer->rx_message; |
| int ret; |
| |
| bakery_lock_get(&ti_sci_xfer_lock); |
| |
| /* Clear any spurious messages in receive queue */ |
| ret = k3_sec_proxy_clear_rx_thread(SP_RESPONSE); |
| if (ret) { |
| ERROR("Could not clear response queue (%d)\n", ret); |
| return ret; |
| } |
| |
| /* Send the message */ |
| ret = k3_sec_proxy_send(SP_HIGH_PRIORITY, tx_msg); |
| if (ret) { |
| ERROR("Message sending failed (%d)\n", ret); |
| return ret; |
| } |
| |
| /* Get the response if requested */ |
| if (rx_msg->len != 0U) { |
| ret = ti_sci_get_response(rx_msg, SP_RESPONSE); |
| if (ret != 0U) { |
| ERROR("Failed to get response (%d)\n", ret); |
| return ret; |
| } |
| } |
| |
| bakery_lock_release(&ti_sci_xfer_lock); |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_get_revision() - Get the revision of the SCI entity |
| * |
| * Updates the SCI information in the internal data structure. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_get_revision(struct ti_sci_msg_resp_version *rev_info) |
| { |
| struct ti_sci_msg_hdr hdr; |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_VERSION, 0x0, |
| &hdr, sizeof(hdr), |
| rev_info, sizeof(*rev_info), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_device_set_state() - Set device state |
| * |
| * @id: Device identifier |
| * @flags: flags to setup for the device |
| * @state: State to move the device to |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| static int ti_sci_device_set_state(uint32_t id, uint32_t flags, uint8_t state) |
| { |
| struct ti_sci_msg_req_set_device_state req; |
| struct ti_sci_msg_hdr resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_DEVICE_STATE, flags, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.id = id; |
| req.state = state; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_device_get_state() - Get device state |
| * |
| * @id: Device Identifier |
| * @clcnt: Pointer to Context Loss Count |
| * @resets: pointer to resets |
| * @p_state: pointer to p_state |
| * @c_state: pointer to c_state |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| static int ti_sci_device_get_state(uint32_t id, uint32_t *clcnt, |
| uint32_t *resets, uint8_t *p_state, |
| uint8_t *c_state) |
| { |
| struct ti_sci_msg_req_get_device_state req; |
| struct ti_sci_msg_resp_get_device_state resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| if (!clcnt && !resets && !p_state && !c_state) |
| return -EINVAL; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_DEVICE_STATE, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.id = id; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| if (clcnt) |
| *clcnt = resp.context_loss_count; |
| if (resets) |
| *resets = resp.resets; |
| if (p_state) |
| *p_state = resp.programmed_state; |
| if (c_state) |
| *c_state = resp.current_state; |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_device_get() - Request for device managed by TISCI |
| * |
| * @id: Device Identifier |
| * |
| * Request for the device - NOTE: the client MUST maintain integrity of |
| * usage count by balancing get_device with put_device. No refcounting is |
| * managed by driver for that purpose. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_device_get(uint32_t id) |
| { |
| return ti_sci_device_set_state(id, 0, MSG_DEVICE_SW_STATE_ON); |
| } |
| |
| /** |
| * ti_sci_device_get_exclusive() - Exclusive request for device managed by TISCI |
| * |
| * @id: Device Identifier |
| * |
| * Request for the device - NOTE: the client MUST maintain integrity of |
| * usage count by balancing get_device with put_device. No refcounting is |
| * managed by driver for that purpose. |
| * |
| * NOTE: This _exclusive version of the get API is for exclusive access to the |
| * device. Any other host in the system will fail to get this device after this |
| * call until exclusive access is released with device_put or a non-exclusive |
| * set call. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_device_get_exclusive(uint32_t id) |
| { |
| return ti_sci_device_set_state(id, |
| MSG_FLAG_DEVICE_EXCLUSIVE, |
| MSG_DEVICE_SW_STATE_ON); |
| } |
| |
| /** |
| * ti_sci_device_idle() - Idle a device managed by TISCI |
| * |
| * @id: Device Identifier |
| * |
| * Request for the device - NOTE: the client MUST maintain integrity of |
| * usage count by balancing get_device with put_device. No refcounting is |
| * managed by driver for that purpose. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_device_idle(uint32_t id) |
| { |
| return ti_sci_device_set_state(id, 0, MSG_DEVICE_SW_STATE_RETENTION); |
| } |
| |
| /** |
| * ti_sci_device_idle_exclusive() - Exclusive idle a device managed by TISCI |
| * |
| * @id: Device Identifier |
| * |
| * Request for the device - NOTE: the client MUST maintain integrity of |
| * usage count by balancing get_device with put_device. No refcounting is |
| * managed by driver for that purpose. |
| * |
| * NOTE: This _exclusive version of the idle API is for exclusive access to |
| * the device. Any other host in the system will fail to get this device after |
| * this call until exclusive access is released with device_put or a |
| * non-exclusive set call. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_device_idle_exclusive(uint32_t id) |
| { |
| return ti_sci_device_set_state(id, |
| MSG_FLAG_DEVICE_EXCLUSIVE, |
| MSG_DEVICE_SW_STATE_RETENTION); |
| } |
| |
| /** |
| * ti_sci_device_put() - Release a device managed by TISCI |
| * |
| * @id: Device Identifier |
| * |
| * Request for the device - NOTE: the client MUST maintain integrity of |
| * usage count by balancing get_device with put_device. No refcounting is |
| * managed by driver for that purpose. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_device_put(uint32_t id) |
| { |
| return ti_sci_device_set_state(id, 0, MSG_DEVICE_SW_STATE_AUTO_OFF); |
| } |
| |
| /** |
| * ti_sci_device_put_no_wait() - Release a device without requesting or waiting |
| * for a response. |
| * |
| * @id: Device Identifier |
| * |
| * Request for the device - NOTE: the client MUST maintain integrity of |
| * usage count by balancing get_device with put_device. No refcounting is |
| * managed by driver for that purpose. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_device_put_no_wait(uint32_t id) |
| { |
| struct ti_sci_msg_req_set_device_state req; |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_DEVICE_STATE, 0, |
| &req, sizeof(req), |
| NULL, 0, |
| &xfer); |
| if (ret != 0U) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.id = id; |
| req.state = MSG_DEVICE_SW_STATE_AUTO_OFF; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret != 0U) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_device_is_valid() - Is the device valid |
| * |
| * @id: Device Identifier |
| * |
| * Return: 0 if all goes well and the device ID is valid, else return |
| * appropriate error |
| */ |
| int ti_sci_device_is_valid(uint32_t id) |
| { |
| uint8_t unused; |
| |
| /* check the device state which will also tell us if the ID is valid */ |
| return ti_sci_device_get_state(id, NULL, NULL, NULL, &unused); |
| } |
| |
| /** |
| * ti_sci_device_get_clcnt() - Get context loss counter |
| * |
| * @id: Device Identifier |
| * @count: Pointer to Context Loss counter to populate |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_device_get_clcnt(uint32_t id, uint32_t *count) |
| { |
| return ti_sci_device_get_state(id, count, NULL, NULL, NULL); |
| } |
| |
| /** |
| * ti_sci_device_is_idle() - Check if the device is requested to be idle |
| * |
| * @id: Device Identifier |
| * @r_state: true if requested to be idle |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_device_is_idle(uint32_t id, bool *r_state) |
| { |
| int ret; |
| uint8_t state; |
| |
| if (!r_state) |
| return -EINVAL; |
| |
| ret = ti_sci_device_get_state(id, NULL, NULL, &state, NULL); |
| if (ret) |
| return ret; |
| |
| *r_state = (state == MSG_DEVICE_SW_STATE_RETENTION); |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_device_is_stop() - Check if the device is requested to be stopped |
| * |
| * @id: Device Identifier |
| * @r_state: true if requested to be stopped |
| * @curr_state: true if currently stopped |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_device_is_stop(uint32_t id, bool *r_state, bool *curr_state) |
| { |
| int ret; |
| uint8_t p_state, c_state; |
| |
| if (!r_state && !curr_state) |
| return -EINVAL; |
| |
| ret = ti_sci_device_get_state(id, NULL, NULL, &p_state, &c_state); |
| if (ret) |
| return ret; |
| |
| if (r_state) |
| *r_state = (p_state == MSG_DEVICE_SW_STATE_AUTO_OFF); |
| if (curr_state) |
| *curr_state = (c_state == MSG_DEVICE_HW_STATE_OFF); |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_device_is_on() - Check if the device is requested to be ON |
| * |
| * @id: Device Identifier |
| * @r_state: true if requested to be ON |
| * @curr_state: true if currently ON and active |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_device_is_on(uint32_t id, bool *r_state, bool *curr_state) |
| { |
| int ret; |
| uint8_t p_state, c_state; |
| |
| if (!r_state && !curr_state) |
| return -EINVAL; |
| |
| ret = |
| ti_sci_device_get_state(id, NULL, NULL, &p_state, &c_state); |
| if (ret) |
| return ret; |
| |
| if (r_state) |
| *r_state = (p_state == MSG_DEVICE_SW_STATE_ON); |
| if (curr_state) |
| *curr_state = (c_state == MSG_DEVICE_HW_STATE_ON); |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_device_is_trans() - Check if the device is currently transitioning |
| * |
| * @id: Device Identifier |
| * @curr_state: true if currently transitioning |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_device_is_trans(uint32_t id, bool *curr_state) |
| { |
| int ret; |
| uint8_t state; |
| |
| if (!curr_state) |
| return -EINVAL; |
| |
| ret = ti_sci_device_get_state(id, NULL, NULL, NULL, &state); |
| if (ret) |
| return ret; |
| |
| *curr_state = (state == MSG_DEVICE_HW_STATE_TRANS); |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_device_set_resets() - Set resets for device managed by TISCI |
| * |
| * @id: Device Identifier |
| * @reset_state: Device specific reset bit field |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_device_set_resets(uint32_t id, uint32_t reset_state) |
| { |
| struct ti_sci_msg_req_set_device_resets req; |
| struct ti_sci_msg_hdr resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_DEVICE_RESETS, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.id = id; |
| req.resets = reset_state; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_device_get_resets() - Get reset state for device managed by TISCI |
| * |
| * @id: Device Identifier |
| * @reset_state: Pointer to reset state to populate |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_device_get_resets(uint32_t id, uint32_t *reset_state) |
| { |
| return ti_sci_device_get_state(id, NULL, reset_state, NULL, NULL); |
| } |
| |
| /** |
| * ti_sci_clock_set_state() - Set clock state helper |
| * |
| * @dev_id: Device identifier this request is for |
| * @clk_id: Clock identifier for the device for this request, |
| * Each device has its own set of clock inputs, This indexes |
| * which clock input to modify |
| * @flags: Header flags as needed |
| * @state: State to request for the clock |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_clock_set_state(uint32_t dev_id, uint8_t clk_id, |
| uint32_t flags, uint8_t state) |
| { |
| struct ti_sci_msg_req_set_clock_state req; |
| struct ti_sci_msg_hdr resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_CLOCK_STATE, flags, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.dev_id = dev_id; |
| req.clk_id = clk_id; |
| req.request_state = state; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_clock_get_state() - Get clock state helper |
| * |
| * @dev_id: Device identifier this request is for |
| * @clk_id: Clock identifier for the device for this request. |
| * Each device has its own set of clock inputs. This indexes |
| * which clock input to modify. |
| * @programmed_state: State requested for clock to move to |
| * @current_state: State that the clock is currently in |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_clock_get_state(uint32_t dev_id, uint8_t clk_id, |
| uint8_t *programmed_state, |
| uint8_t *current_state) |
| { |
| struct ti_sci_msg_req_get_clock_state req; |
| struct ti_sci_msg_resp_get_clock_state resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| if (!programmed_state && !current_state) |
| return -EINVAL; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_CLOCK_STATE, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.dev_id = dev_id; |
| req.clk_id = clk_id; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| if (programmed_state) |
| *programmed_state = resp.programmed_state; |
| if (current_state) |
| *current_state = resp.current_state; |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_clock_get() - Get control of a clock from TI SCI |
| |
| * @dev_id: Device identifier this request is for |
| * @clk_id: Clock identifier for the device for this request. |
| * Each device has its own set of clock inputs. This indexes |
| * which clock input to modify. |
| * @needs_ssc: 'true' iff Spread Spectrum clock is desired |
| * @can_change_freq: 'true' iff frequency change is desired |
| * @enable_input_term: 'true' iff input termination is desired |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_clock_get(uint32_t dev_id, uint8_t clk_id, |
| bool needs_ssc, bool can_change_freq, |
| bool enable_input_term) |
| { |
| uint32_t flags = 0; |
| |
| flags |= needs_ssc ? MSG_FLAG_CLOCK_ALLOW_SSC : 0; |
| flags |= can_change_freq ? MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE : 0; |
| flags |= enable_input_term ? MSG_FLAG_CLOCK_INPUT_TERM : 0; |
| |
| return ti_sci_clock_set_state(dev_id, clk_id, flags, |
| MSG_CLOCK_SW_STATE_REQ); |
| } |
| |
| /** |
| * ti_sci_clock_idle() - Idle a clock which is in our control |
| |
| * @dev_id: Device identifier this request is for |
| * @clk_id: Clock identifier for the device for this request. |
| * Each device has its own set of clock inputs. This indexes |
| * which clock input to modify. |
| * |
| * NOTE: This clock must have been requested by get_clock previously. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_clock_idle(uint32_t dev_id, uint8_t clk_id) |
| { |
| return ti_sci_clock_set_state(dev_id, clk_id, 0, |
| MSG_CLOCK_SW_STATE_UNREQ); |
| } |
| |
| /** |
| * ti_sci_clock_put() - Release a clock from our control |
| * |
| * @dev_id: Device identifier this request is for |
| * @clk_id: Clock identifier for the device for this request. |
| * Each device has its own set of clock inputs. This indexes |
| * which clock input to modify. |
| * |
| * NOTE: This clock must have been requested by get_clock previously. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_clock_put(uint32_t dev_id, uint8_t clk_id) |
| { |
| return ti_sci_clock_set_state(dev_id, clk_id, 0, |
| MSG_CLOCK_SW_STATE_AUTO); |
| } |
| |
| /** |
| * ti_sci_clock_is_auto() - Is the clock being auto managed |
| * |
| * @dev_id: Device identifier this request is for |
| * @clk_id: Clock identifier for the device for this request. |
| * Each device has its own set of clock inputs. This indexes |
| * which clock input to modify. |
| * @req_state: state indicating if the clock is auto managed |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_clock_is_auto(uint32_t dev_id, uint8_t clk_id, bool *req_state) |
| { |
| uint8_t state = 0; |
| int ret; |
| |
| if (!req_state) |
| return -EINVAL; |
| |
| ret = ti_sci_clock_get_state(dev_id, clk_id, &state, NULL); |
| if (ret) |
| return ret; |
| |
| *req_state = (state == MSG_CLOCK_SW_STATE_AUTO); |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_clock_is_on() - Is the clock ON |
| * |
| * @dev_id: Device identifier this request is for |
| * @clk_id: Clock identifier for the device for this request. |
| * Each device has its own set of clock inputs. This indexes |
| * which clock input to modify. |
| * @req_state: state indicating if the clock is managed by us and enabled |
| * @curr_state: state indicating if the clock is ready for operation |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_clock_is_on(uint32_t dev_id, uint8_t clk_id, |
| bool *req_state, bool *curr_state) |
| { |
| uint8_t c_state = 0, r_state = 0; |
| int ret; |
| |
| if (!req_state && !curr_state) |
| return -EINVAL; |
| |
| ret = ti_sci_clock_get_state(dev_id, clk_id, &r_state, &c_state); |
| if (ret) |
| return ret; |
| |
| if (req_state) |
| *req_state = (r_state == MSG_CLOCK_SW_STATE_REQ); |
| if (curr_state) |
| *curr_state = (c_state == MSG_CLOCK_HW_STATE_READY); |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_clock_is_off() - Is the clock OFF |
| * |
| * @dev_id: Device identifier this request is for |
| * @clk_id: Clock identifier for the device for this request. |
| * Each device has its own set of clock inputs. This indexes |
| * which clock input to modify. |
| * @req_state: state indicating if the clock is managed by us and disabled |
| * @curr_state: state indicating if the clock is NOT ready for operation |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_clock_is_off(uint32_t dev_id, uint8_t clk_id, |
| bool *req_state, bool *curr_state) |
| { |
| uint8_t c_state = 0, r_state = 0; |
| int ret; |
| |
| if (!req_state && !curr_state) |
| return -EINVAL; |
| |
| ret = ti_sci_clock_get_state(dev_id, clk_id, &r_state, &c_state); |
| if (ret) |
| return ret; |
| |
| if (req_state) |
| *req_state = (r_state == MSG_CLOCK_SW_STATE_UNREQ); |
| if (curr_state) |
| *curr_state = (c_state == MSG_CLOCK_HW_STATE_NOT_READY); |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_clock_set_parent() - Set the clock source of a specific device clock |
| * |
| * @dev_id: Device identifier this request is for |
| * @clk_id: Clock identifier for the device for this request. |
| * Each device has its own set of clock inputs. This indexes |
| * which clock input to modify. |
| * @parent_id: Parent clock identifier to set |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_clock_set_parent(uint32_t dev_id, uint8_t clk_id, uint8_t parent_id) |
| { |
| struct ti_sci_msg_req_set_clock_parent req; |
| struct ti_sci_msg_hdr resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_CLOCK_PARENT, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.dev_id = dev_id; |
| req.clk_id = clk_id; |
| req.parent_id = parent_id; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_clock_get_parent() - Get current parent clock source |
| * |
| * @dev_id: Device identifier this request is for |
| * @clk_id: Clock identifier for the device for this request. |
| * Each device has its own set of clock inputs. This indexes |
| * which clock input to modify. |
| * @parent_id: Current clock parent |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_clock_get_parent(uint32_t dev_id, uint8_t clk_id, uint8_t *parent_id) |
| { |
| struct ti_sci_msg_req_get_clock_parent req; |
| struct ti_sci_msg_resp_get_clock_parent resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_CLOCK_PARENT, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.dev_id = dev_id; |
| req.clk_id = clk_id; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| *parent_id = resp.parent_id; |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_clock_get_num_parents() - Get num parents of the current clk source |
| * |
| * @dev_id: Device identifier this request is for |
| * @clk_id: Clock identifier for the device for this request. |
| * Each device has its own set of clock inputs. This indexes |
| * which clock input to modify. |
| * @num_parents: Returns he number of parents to the current clock. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_clock_get_num_parents(uint32_t dev_id, uint8_t clk_id, |
| uint8_t *num_parents) |
| { |
| struct ti_sci_msg_req_get_clock_num_parents req; |
| struct ti_sci_msg_resp_get_clock_num_parents resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_NUM_CLOCK_PARENTS, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.dev_id = dev_id; |
| req.clk_id = clk_id; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| *num_parents = resp.num_parents; |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_clock_get_match_freq() - Find a good match for frequency |
| * |
| * @dev_id: Device identifier this request is for |
| * @clk_id: Clock identifier for the device for this request. |
| * Each device has its own set of clock inputs. This indexes |
| * which clock input to modify. |
| * @min_freq: The minimum allowable frequency in Hz. This is the minimum |
| * allowable programmed frequency and does not account for clock |
| * tolerances and jitter. |
| * @target_freq: The target clock frequency in Hz. A frequency will be |
| * processed as close to this target frequency as possible. |
| * @max_freq: The maximum allowable frequency in Hz. This is the maximum |
| * allowable programmed frequency and does not account for clock |
| * tolerances and jitter. |
| * @match_freq: Frequency match in Hz response. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_clock_get_match_freq(uint32_t dev_id, uint8_t clk_id, |
| uint64_t min_freq, uint64_t target_freq, |
| uint64_t max_freq, uint64_t *match_freq) |
| { |
| struct ti_sci_msg_req_query_clock_freq req; |
| struct ti_sci_msg_resp_query_clock_freq resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_QUERY_CLOCK_FREQ, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.dev_id = dev_id; |
| req.clk_id = clk_id; |
| req.min_freq_hz = min_freq; |
| req.target_freq_hz = target_freq; |
| req.max_freq_hz = max_freq; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| *match_freq = resp.freq_hz; |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_clock_set_freq() - Set a frequency for clock |
| * |
| * @dev_id: Device identifier this request is for |
| * @clk_id: Clock identifier for the device for this request. |
| * Each device has its own set of clock inputs. This indexes |
| * which clock input to modify. |
| * @min_freq: The minimum allowable frequency in Hz. This is the minimum |
| * allowable programmed frequency and does not account for clock |
| * tolerances and jitter. |
| * @target_freq: The target clock frequency in Hz. A frequency will be |
| * processed as close to this target frequency as possible. |
| * @max_freq: The maximum allowable frequency in Hz. This is the maximum |
| * allowable programmed frequency and does not account for clock |
| * tolerances and jitter. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_clock_set_freq(uint32_t dev_id, uint8_t clk_id, uint64_t min_freq, |
| uint64_t target_freq, uint64_t max_freq) |
| { |
| struct ti_sci_msg_req_set_clock_freq req; |
| struct ti_sci_msg_hdr resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SET_CLOCK_FREQ, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| req.dev_id = dev_id; |
| req.clk_id = clk_id; |
| req.min_freq_hz = min_freq; |
| req.target_freq_hz = target_freq; |
| req.max_freq_hz = max_freq; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_clock_get_freq() - Get current frequency |
| * |
| * @dev_id: Device identifier this request is for |
| * @clk_id: Clock identifier for the device for this request. |
| * Each device has its own set of clock inputs. This indexes |
| * which clock input to modify. |
| * @freq: Currently frequency in Hz |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_clock_get_freq(uint32_t dev_id, uint8_t clk_id, uint64_t *freq) |
| { |
| struct ti_sci_msg_req_get_clock_freq req; |
| struct ti_sci_msg_resp_get_clock_freq resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_CLOCK_FREQ, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.dev_id = dev_id; |
| req.clk_id = clk_id; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| *freq = resp.freq_hz; |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_core_reboot() - Command to request system reset |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_core_reboot(void) |
| { |
| struct ti_sci_msg_req_reboot req; |
| struct ti_sci_msg_hdr resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_SYS_RESET, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| req.domain = TI_SCI_DOMAIN_FULL_SOC_RESET; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_proc_request() - Request a physical processor control |
| * |
| * @proc_id: Processor ID this request is for |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_proc_request(uint8_t proc_id) |
| { |
| struct ti_sci_msg_req_proc_request req; |
| struct ti_sci_msg_hdr resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_REQUEST, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.processor_id = proc_id; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_proc_release() - Release a physical processor control |
| * |
| * @proc_id: Processor ID this request is for |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_proc_release(uint8_t proc_id) |
| { |
| struct ti_sci_msg_req_proc_release req; |
| struct ti_sci_msg_hdr resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_RELEASE, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.processor_id = proc_id; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_proc_handover() - Handover a physical processor control to a host in |
| * the processor's access control list. |
| * |
| * @proc_id: Processor ID this request is for |
| * @host_id: Host ID to get the control of the processor |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_proc_handover(uint8_t proc_id, uint8_t host_id) |
| { |
| struct ti_sci_msg_req_proc_handover req; |
| struct ti_sci_msg_hdr resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_HANDOVER, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.processor_id = proc_id; |
| req.host_id = host_id; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_proc_set_boot_cfg() - Set the processor boot configuration flags |
| * |
| * @proc_id: Processor ID this request is for |
| * @config_flags_set: Configuration flags to be set |
| * @config_flags_clear: Configuration flags to be cleared |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_proc_set_boot_cfg(uint8_t proc_id, uint64_t bootvector, |
| uint32_t config_flags_set, |
| uint32_t config_flags_clear) |
| { |
| struct ti_sci_msg_req_set_proc_boot_config req; |
| struct ti_sci_msg_hdr resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TISCI_MSG_SET_PROC_BOOT_CONFIG, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.processor_id = proc_id; |
| req.bootvector_low = bootvector & TISCI_ADDR_LOW_MASK; |
| req.bootvector_high = (bootvector & TISCI_ADDR_HIGH_MASK) >> |
| TISCI_ADDR_HIGH_SHIFT; |
| req.config_flags_set = config_flags_set; |
| req.config_flags_clear = config_flags_clear; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_proc_set_boot_ctrl() - Set the processor boot control flags |
| * |
| * @proc_id: Processor ID this request is for |
| * @control_flags_set: Control flags to be set |
| * @control_flags_clear: Control flags to be cleared |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_proc_set_boot_ctrl(uint8_t proc_id, uint32_t control_flags_set, |
| uint32_t control_flags_clear) |
| { |
| struct ti_sci_msg_req_set_proc_boot_ctrl req; |
| struct ti_sci_msg_hdr resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TISCI_MSG_SET_PROC_BOOT_CTRL, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.processor_id = proc_id; |
| req.control_flags_set = control_flags_set; |
| req.control_flags_clear = control_flags_clear; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_proc_set_boot_ctrl_no_wait() - Set the processor boot control flags |
| * without requesting or waiting for a |
| * response. |
| * |
| * @proc_id: Processor ID this request is for |
| * @control_flags_set: Control flags to be set |
| * @control_flags_clear: Control flags to be cleared |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_proc_set_boot_ctrl_no_wait(uint8_t proc_id, |
| uint32_t control_flags_set, |
| uint32_t control_flags_clear) |
| { |
| struct ti_sci_msg_req_set_proc_boot_ctrl req; |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_DEVICE_STATE, 0, |
| &req, sizeof(req), |
| NULL, 0, |
| &xfer); |
| if (ret != 0U) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.processor_id = proc_id; |
| req.control_flags_set = control_flags_set; |
| req.control_flags_clear = control_flags_clear; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret != 0U) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_proc_auth_boot_image() - Authenticate and load image and then set the |
| * processor configuration flags |
| * |
| * @proc_id: Processor ID this request is for |
| * @cert_addr: Memory address at which payload image certificate is located |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_proc_auth_boot_image(uint8_t proc_id, uint64_t cert_addr) |
| { |
| struct ti_sci_msg_req_proc_auth_boot_image req; |
| struct ti_sci_msg_hdr resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TISCI_MSG_PROC_AUTH_BOOT_IMAGE, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.processor_id = proc_id; |
| req.cert_addr_low = cert_addr & TISCI_ADDR_LOW_MASK; |
| req.cert_addr_high = (cert_addr & TISCI_ADDR_HIGH_MASK) >> |
| TISCI_ADDR_HIGH_SHIFT; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_proc_get_boot_status() - Get the processor boot status |
| * |
| * @proc_id: Processor ID this request is for |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_proc_get_boot_status(uint8_t proc_id, uint64_t *bv, |
| uint32_t *cfg_flags, |
| uint32_t *ctrl_flags, |
| uint32_t *sts_flags) |
| { |
| struct ti_sci_msg_req_get_proc_boot_status req; |
| struct ti_sci_msg_resp_get_proc_boot_status resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TISCI_MSG_GET_PROC_BOOT_STATUS, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.processor_id = proc_id; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| *bv = (resp.bootvector_low & TISCI_ADDR_LOW_MASK) | |
| (((uint64_t)resp.bootvector_high << TISCI_ADDR_HIGH_SHIFT) & |
| TISCI_ADDR_HIGH_MASK); |
| *cfg_flags = resp.config_flags; |
| *ctrl_flags = resp.control_flags; |
| *sts_flags = resp.status_flags; |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_proc_wait_boot_status() - Wait for a processor boot status |
| * |
| * @proc_id: Processor ID this request is for |
| * @num_wait_iterations Total number of iterations we will check before |
| * we will timeout and give up |
| * @num_match_iterations How many iterations should we have continued |
| * status to account for status bits glitching. |
| * This is to make sure that match occurs for |
| * consecutive checks. This implies that the |
| * worst case should consider that the stable |
| * time should at the worst be num_wait_iterations |
| * num_match_iterations to prevent timeout. |
| * @delay_per_iteration_us Specifies how long to wait (in micro seconds) |
| * between each status checks. This is the minimum |
| * duration, and overhead of register reads and |
| * checks are on top of this and can vary based on |
| * varied conditions. |
| * @delay_before_iterations_us Specifies how long to wait (in micro seconds) |
| * before the very first check in the first |
| * iteration of status check loop. This is the |
| * minimum duration, and overhead of register |
| * reads and checks are. |
| * @status_flags_1_set_all_wait If non-zero, Specifies that all bits of the |
| * status matching this field requested MUST be 1. |
| * @status_flags_1_set_any_wait If non-zero, Specifies that at least one of the |
| * bits matching this field requested MUST be 1. |
| * @status_flags_1_clr_all_wait If non-zero, Specifies that all bits of the |
| * status matching this field requested MUST be 0. |
| * @status_flags_1_clr_any_wait If non-zero, Specifies that at least one of the |
| * bits matching this field requested MUST be 0. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_proc_wait_boot_status(uint8_t proc_id, uint8_t num_wait_iterations, |
| uint8_t num_match_iterations, |
| uint8_t delay_per_iteration_us, |
| uint8_t delay_before_iterations_us, |
| uint32_t status_flags_1_set_all_wait, |
| uint32_t status_flags_1_set_any_wait, |
| uint32_t status_flags_1_clr_all_wait, |
| uint32_t status_flags_1_clr_any_wait) |
| { |
| struct ti_sci_msg_req_wait_proc_boot_status req; |
| struct ti_sci_msg_hdr resp; |
| |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TISCI_MSG_WAIT_PROC_BOOT_STATUS, 0, |
| &req, sizeof(req), |
| &resp, sizeof(resp), |
| &xfer); |
| if (ret) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.processor_id = proc_id; |
| req.num_wait_iterations = num_wait_iterations; |
| req.num_match_iterations = num_match_iterations; |
| req.delay_per_iteration_us = delay_per_iteration_us; |
| req.delay_before_iterations_us = delay_before_iterations_us; |
| req.status_flags_1_set_all_wait = status_flags_1_set_all_wait; |
| req.status_flags_1_set_any_wait = status_flags_1_set_any_wait; |
| req.status_flags_1_clr_all_wait = status_flags_1_clr_all_wait; |
| req.status_flags_1_clr_any_wait = status_flags_1_clr_any_wait; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_proc_wait_boot_status_no_wait() - Wait for a processor boot status |
| * without requesting or waiting for |
| * a response. |
| * |
| * @proc_id: Processor ID this request is for |
| * @num_wait_iterations Total number of iterations we will check before |
| * we will timeout and give up |
| * @num_match_iterations How many iterations should we have continued |
| * status to account for status bits glitching. |
| * This is to make sure that match occurs for |
| * consecutive checks. This implies that the |
| * worst case should consider that the stable |
| * time should at the worst be num_wait_iterations |
| * num_match_iterations to prevent timeout. |
| * @delay_per_iteration_us Specifies how long to wait (in micro seconds) |
| * between each status checks. This is the minimum |
| * duration, and overhead of register reads and |
| * checks are on top of this and can vary based on |
| * varied conditions. |
| * @delay_before_iterations_us Specifies how long to wait (in micro seconds) |
| * before the very first check in the first |
| * iteration of status check loop. This is the |
| * minimum duration, and overhead of register |
| * reads and checks are. |
| * @status_flags_1_set_all_wait If non-zero, Specifies that all bits of the |
| * status matching this field requested MUST be 1. |
| * @status_flags_1_set_any_wait If non-zero, Specifies that at least one of the |
| * bits matching this field requested MUST be 1. |
| * @status_flags_1_clr_all_wait If non-zero, Specifies that all bits of the |
| * status matching this field requested MUST be 0. |
| * @status_flags_1_clr_any_wait If non-zero, Specifies that at least one of the |
| * bits matching this field requested MUST be 0. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_proc_wait_boot_status_no_wait(uint8_t proc_id, |
| uint8_t num_wait_iterations, |
| uint8_t num_match_iterations, |
| uint8_t delay_per_iteration_us, |
| uint8_t delay_before_iterations_us, |
| uint32_t status_flags_1_set_all_wait, |
| uint32_t status_flags_1_set_any_wait, |
| uint32_t status_flags_1_clr_all_wait, |
| uint32_t status_flags_1_clr_any_wait) |
| { |
| struct ti_sci_msg_req_wait_proc_boot_status req; |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_DEVICE_STATE, 0, |
| &req, sizeof(req), |
| NULL, 0, |
| &xfer); |
| if (ret != 0U) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.processor_id = proc_id; |
| req.num_wait_iterations = num_wait_iterations; |
| req.num_match_iterations = num_match_iterations; |
| req.delay_per_iteration_us = delay_per_iteration_us; |
| req.delay_before_iterations_us = delay_before_iterations_us; |
| req.status_flags_1_set_all_wait = status_flags_1_set_all_wait; |
| req.status_flags_1_set_any_wait = status_flags_1_set_any_wait; |
| req.status_flags_1_clr_all_wait = status_flags_1_clr_all_wait; |
| req.status_flags_1_clr_any_wait = status_flags_1_clr_any_wait; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret != 0U) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_enter_sleep - Command to initiate system transition into suspend. |
| * |
| * @proc_id: Processor ID. |
| * @mode: Low power mode to enter. |
| * @core_resume_addr: Address that core should be |
| * resumed from after low power transition. |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_enter_sleep(uint8_t proc_id, |
| uint8_t mode, |
| uint64_t core_resume_addr) |
| { |
| struct ti_sci_msg_req_enter_sleep req; |
| struct ti_sci_xfer xfer; |
| int ret; |
| |
| ret = ti_sci_setup_one_xfer(TI_SCI_MSG_GET_DEVICE_STATE, 0, |
| &req, sizeof(req), |
| NULL, 0, |
| &xfer); |
| if (ret != 0U) { |
| ERROR("Message alloc failed (%d)\n", ret); |
| return ret; |
| } |
| |
| req.processor_id = proc_id; |
| req.mode = mode; |
| req.core_resume_lo = core_resume_addr & TISCI_ADDR_LOW_MASK; |
| req.core_resume_hi = (core_resume_addr & TISCI_ADDR_HIGH_MASK) >> |
| TISCI_ADDR_HIGH_SHIFT; |
| |
| ret = ti_sci_do_xfer(&xfer); |
| if (ret != 0U) { |
| ERROR("Transfer send failed (%d)\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ti_sci_init() - Basic initialization |
| * |
| * Return: 0 if all goes well, else appropriate error message |
| */ |
| int ti_sci_init(void) |
| { |
| struct ti_sci_msg_resp_version rev_info; |
| int ret; |
| |
| ret = ti_sci_get_revision(&rev_info); |
| if (ret) { |
| ERROR("Unable to communicate with control firmware (%d)\n", ret); |
| return ret; |
| } |
| |
| INFO("SYSFW ABI: %d.%d (firmware rev 0x%04x '%s')\n", |
| rev_info.abi_major, rev_info.abi_minor, |
| rev_info.firmware_revision, |
| rev_info.firmware_description); |
| |
| return 0; |
| } |