// SPDX-License-Identifier: GPL-2.0+ /* * Texas Instruments System Control Interface Protocol Driver * Based on drivers/firmware/ti_sci.c from Linux. * * Copyright (C) 2018 Texas Instruments Incorporated - https://www.ti.com/ * Lokesh Vutla */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ti_sci.h" #include "ti_sci_static_data.h" /* List of all TI SCI devices active in system */ static LIST_HEAD(ti_sci_list); /** * struct ti_sci_xfer - Structure representing a message flow * @tx_message: Transmit message * @rx_len: Receive message length */ struct ti_sci_xfer { struct k3_sec_proxy_msg tx_message; u8 rx_len; }; /** * struct ti_sci_rm_type_map - Structure representing TISCI Resource * management representation of dev_ids. * @dev_id: TISCI device ID * @type: Corresponding id as identified by TISCI RM. * * Note: This is used only as a work around for using RM range apis * for AM654 SoC. For future SoCs dev_id will be used as type * for RM range APIs. In order to maintain ABI backward compatibility * type is not being changed for AM654 SoC. */ struct ti_sci_rm_type_map { u32 dev_id; u16 type; }; /** * struct ti_sci_desc - Description of SoC integration * @default_host_id: Host identifier representing the compute entity * @max_rx_timeout_ms: Timeout for communication with SoC (in Milliseconds) * @max_msgs: Maximum number of messages that can be pending * simultaneously in the system * @max_msg_size: Maximum size of data per message that can be handled. */ struct ti_sci_desc { u8 default_host_id; int max_rx_timeout_ms; int max_msgs; int max_msg_size; }; /** * struct ti_sci_info - Structure representing a TI SCI instance * @dev: Device pointer * @desc: SoC description for this instance * @handle: Instance of TI SCI handle to send to clients. * @chan_tx: Transmit mailbox channel * @chan_rx: Receive mailbox channel * @xfer: xfer info * @list: list head * @is_secure: Determines if the communication is through secure threads. * @host_id: Host identifier representing the compute entity * @seq: Seq id used for verification for tx and rx message. */ struct ti_sci_info { struct udevice *dev; const struct ti_sci_desc *desc; struct ti_sci_handle handle; struct mbox_chan chan_tx; struct mbox_chan chan_rx; struct mbox_chan chan_notify; struct ti_sci_xfer xfer; struct list_head list; struct list_head dev_list; bool is_secure; u8 host_id; u8 seq; }; struct ti_sci_exclusive_dev { u32 id; u32 count; struct list_head list; }; #define handle_to_ti_sci_info(h) container_of(h, struct ti_sci_info, handle) /** * ti_sci_setup_one_xfer() - Setup one message type * @info: Pointer to SCI entity information * @msg_type: Message type * @msg_flags: Flag to set for the message * @buf: Buffer to be send to mailbox channel * @tx_message_size: transmit message size * @rx_message_size: receive message size. may be set to zero for send-only * transactions. * * Helper function which is used by various command functions that are * exposed to clients of this driver for allocating a message traffic event. * * Return: Corresponding ti_sci_xfer pointer if all went fine, * else appropriate error pointer. */ static struct ti_sci_xfer *ti_sci_setup_one_xfer(struct ti_sci_info *info, u16 msg_type, u32 msg_flags, u32 *buf, size_t tx_message_size, size_t rx_message_size) { struct ti_sci_xfer *xfer = &info->xfer; struct ti_sci_msg_hdr *hdr; /* Ensure we have sane transfer sizes */ if (rx_message_size > info->desc->max_msg_size || tx_message_size > info->desc->max_msg_size || (rx_message_size > 0 && rx_message_size < sizeof(*hdr)) || tx_message_size < sizeof(*hdr)) { dev_err(info->dev, "TI-SCI message transfer size not sane\n"); return ERR_PTR(-ERANGE); } info->seq = ~info->seq; xfer->tx_message.buf = buf; xfer->tx_message.len = tx_message_size; xfer->rx_len = (u8)rx_message_size; hdr = (struct ti_sci_msg_hdr *)buf; hdr->seq = info->seq; hdr->type = msg_type; hdr->host = info->host_id; hdr->flags = msg_flags; return xfer; } /** * ti_sci_get_response() - Receive response from mailbox channel * @info: Pointer to SCI entity information * @xfer: Transfer to initiate and wait for response * @chan: Channel to receive the response * * Return: -ETIMEDOUT in case of no response, if transmit error, * return corresponding error, else if all goes well, * return 0. */ static int ti_sci_get_response(struct ti_sci_info *info, struct ti_sci_xfer *xfer, struct mbox_chan *chan) { struct k3_sec_proxy_msg *msg = &xfer->tx_message; struct ti_sci_secure_msg_hdr *secure_hdr; struct ti_sci_msg_hdr *hdr; int ret; /* Receive the response */ ret = mbox_recv(chan, msg, info->desc->max_rx_timeout_ms * 1000); if (ret) { dev_err(info->dev, "%s: Message receive failed. ret = %d\n", __func__, ret); return ret; } /* ToDo: Verify checksum */ if (info->is_secure) { secure_hdr = (struct ti_sci_secure_msg_hdr *)msg->buf; msg->buf = (u32 *)((void *)msg->buf + sizeof(*secure_hdr)); } /* msg is updated by mailbox driver */ hdr = (struct ti_sci_msg_hdr *)msg->buf; /* Sanity check for message response */ if (hdr->seq != info->seq) { dev_dbg(info->dev, "%s: Message for %d is not expected\n", __func__, hdr->seq); return ret; } if (msg->len > info->desc->max_msg_size) { dev_err(info->dev, "%s: Unable to handle %zu xfer (max %d)\n", __func__, msg->len, info->desc->max_msg_size); return -EINVAL; } if (msg->len < xfer->rx_len) { dev_err(info->dev, "%s: Recv xfer %zu < expected %d length\n", __func__, msg->len, xfer->rx_len); } return ret; } /** * ti_sci_is_response_ack() - Generic ACK/NACK message checkup * @r: pointer to response buffer * * Return: true if the response was an ACK, else returns false. */ static bool ti_sci_is_response_ack(void *r) { struct ti_sci_msg_hdr *hdr = r; return hdr->flags & TI_SCI_FLAG_RESP_GENERIC_ACK ? true : false; } /** * ti_sci_do_xfer() - Do one transfer * @info: Pointer to SCI entity information * @xfer: Transfer to initiate and wait for response * * Return: 0 if all went fine, else return appropriate error. */ static int ti_sci_do_xfer(struct ti_sci_info *info, struct ti_sci_xfer *xfer) { struct k3_sec_proxy_msg *msg = &xfer->tx_message; u8 secure_buf[info->desc->max_msg_size]; struct ti_sci_secure_msg_hdr *secure_hdr = (struct ti_sci_secure_msg_hdr *)secure_buf; int ret; /* * The reason why we need the is_secure code is because of boot R5. * boot R5 starts off in "secure mode" when it hands off from Boot * ROM over to the Secondary bootloader. The initial set of calls * we have to make need to be on a secure pipe. */ if (info->is_secure) { /* ToDo: get checksum of the entire message */ secure_hdr->checksum = 0; secure_hdr->reserved = 0; memcpy(&secure_buf[sizeof(*secure_hdr)], xfer->tx_message.buf, xfer->tx_message.len); xfer->tx_message.buf = (u32 *)secure_buf; xfer->tx_message.len += sizeof(*secure_hdr); if (xfer->rx_len) xfer->rx_len += sizeof(*secure_hdr); } /* Send the message */ ret = mbox_send(&info->chan_tx, msg); if (ret) { dev_err(info->dev, "%s: Message sending failed. ret = %d\n", __func__, ret); return ret; } /* Get response if requested */ if (xfer->rx_len) { ret = ti_sci_get_response(info, xfer, &info->chan_rx); if (!ti_sci_is_response_ack(xfer->tx_message.buf)) { dev_err(info->dev, "Message not acknowledged\n"); ret = -ENODEV; } } return ret; } /** * ti_sci_cmd_get_revision() - command to get the revision of the SCI entity * @handle: pointer to TI SCI handle * * Updates the SCI information in the internal data structure. * * Return: 0 if all went fine, else return appropriate error. */ static int ti_sci_cmd_get_revision(struct ti_sci_handle *handle) { struct ti_sci_msg_resp_version *rev_info; struct ti_sci_version_info *ver; struct ti_sci_msg_hdr hdr; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_VERSION, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&hdr, sizeof(struct ti_sci_msg_hdr), sizeof(*rev_info)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; rev_info = (struct ti_sci_msg_resp_version *)xfer->tx_message.buf; ver = &handle->version; ver->abi_major = rev_info->abi_major; ver->abi_minor = rev_info->abi_minor; ver->firmware_revision = rev_info->firmware_revision; strncpy(ver->firmware_description, rev_info->firmware_description, sizeof(ver->firmware_description)); return 0; } /** * cmd_set_board_config_using_msg() - Common command to send board configuration * message * @handle: pointer to TI SCI handle * @msg_type: One of the TISCI message types to set board configuration * @addr: Address where the board config structure is located * @size: Size of the board config structure * * Return: 0 if all went well, else returns appropriate error value. */ static int cmd_set_board_config_using_msg(const struct ti_sci_handle *handle, u16 msg_type, u64 addr, u32 size) { struct ti_sci_msg_board_config req; struct ti_sci_msg_hdr *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, msg_type, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.boardcfgp_high = (addr >> 32) & 0xffffffff; req.boardcfgp_low = addr & 0xffffffff; req.boardcfg_size = size; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; return ret; } /** * ti_sci_cmd_set_board_config() - Command to send board configuration message * @handle: pointer to TI SCI handle * @addr: Address where the board config structure is located * @size: Size of the board config structure * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_set_board_config(const struct ti_sci_handle *handle, u64 addr, u32 size) { return cmd_set_board_config_using_msg(handle, TI_SCI_MSG_BOARD_CONFIG, addr, size); } /** * ti_sci_cmd_set_board_config_rm() - Command to send board resource * management configuration * @handle: pointer to TI SCI handle * @addr: Address where the board RM config structure is located * @size: Size of the RM config structure * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_set_board_config_rm(const struct ti_sci_handle *handle, u64 addr, u32 size) { return cmd_set_board_config_using_msg(handle, TI_SCI_MSG_BOARD_CONFIG_RM, addr, size); } /** * ti_sci_cmd_set_board_config_security() - Command to send board security * configuration message * @handle: pointer to TI SCI handle * @addr: Address where the board security config structure is located * @size: Size of the security config structure * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_set_board_config_security(const struct ti_sci_handle *handle, u64 addr, u32 size) { return cmd_set_board_config_using_msg(handle, TI_SCI_MSG_BOARD_CONFIG_SECURITY, addr, size); } /** * ti_sci_cmd_set_board_config_pm() - Command to send board power and clock * configuration message * @handle: pointer to TI SCI handle * @addr: Address where the board PM config structure is located * @size: Size of the PM config structure * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_set_board_config_pm(const struct ti_sci_handle *handle, u64 addr, u32 size) { return cmd_set_board_config_using_msg(handle, TI_SCI_MSG_BOARD_CONFIG_PM, addr, size); } static struct ti_sci_exclusive_dev *ti_sci_get_exclusive_dev(struct list_head *dev_list, u32 id) { struct ti_sci_exclusive_dev *dev; list_for_each_entry(dev, dev_list, list) if (dev->id == id) return dev; return NULL; } static void ti_sci_add_exclusive_dev(struct ti_sci_info *info, u32 id) { struct ti_sci_exclusive_dev *dev; dev = ti_sci_get_exclusive_dev(&info->dev_list, id); if (dev) { dev->count++; return; } dev = kzalloc(sizeof(*dev), GFP_KERNEL); dev->id = id; dev->count = 1; INIT_LIST_HEAD(&dev->list); list_add_tail(&dev->list, &info->dev_list); } static void ti_sci_delete_exclusive_dev(struct ti_sci_info *info, u32 id) { struct ti_sci_exclusive_dev *dev; dev = ti_sci_get_exclusive_dev(&info->dev_list, id); if (!dev) return; if (dev->count > 0) dev->count--; } /** * ti_sci_set_device_state() - Set device state helper * @handle: pointer to TI SCI handle * @id: Device identifier * @flags: flags to setup for the device * @state: State to move the device to * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_set_device_state(const struct ti_sci_handle *handle, u32 id, u32 flags, u8 state) { struct ti_sci_msg_req_set_device_state req; struct ti_sci_msg_hdr *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_DEVICE_STATE, flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.id = id; req.state = state; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; if (state == MSG_DEVICE_SW_STATE_AUTO_OFF) ti_sci_delete_exclusive_dev(info, id); else if (flags & MSG_FLAG_DEVICE_EXCLUSIVE) ti_sci_add_exclusive_dev(info, id); return ret; } /** * ti_sci_set_device_state_no_wait() - Set device state helper without * requesting or waiting for a response. * @handle: pointer to TI SCI handle * @id: Device identifier * @flags: flags to setup for the device * @state: State to move the device to * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_set_device_state_no_wait(const struct ti_sci_handle *handle, u32 id, u32 flags, u8 state) { struct ti_sci_msg_req_set_device_state req; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_DEVICE_STATE, flags | TI_SCI_FLAG_REQ_GENERIC_NORESPONSE, (u32 *)&req, sizeof(req), 0); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.id = id; req.state = state; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; return ret; } /** * ti_sci_get_device_state() - Get device state helper * @handle: Handle to the device * @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 went fine, else return appropriate error. */ static int ti_sci_get_device_state(const struct ti_sci_handle *handle, u32 id, u32 *clcnt, u32 *resets, u8 *p_state, u8 *c_state) { struct ti_sci_msg_resp_get_device_state *resp; struct ti_sci_msg_req_get_device_state req; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; if (!clcnt && !resets && !p_state && !c_state) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_DEVICE_STATE, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.id = id; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; resp = (struct ti_sci_msg_resp_get_device_state *)xfer->tx_message.buf; 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 ret; } /** * ti_sci_cmd_get_device() - command to request for device managed by TISCI * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle * @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: The request is for exclusive access for the processor. * * Return: 0 if all went fine, else return appropriate error. */ static int ti_sci_cmd_get_device(const struct ti_sci_handle *handle, u32 id) { return ti_sci_set_device_state(handle, id, 0, MSG_DEVICE_SW_STATE_ON); } static int ti_sci_cmd_get_device_exclusive(const struct ti_sci_handle *handle, u32 id) { return ti_sci_set_device_state(handle, id, MSG_FLAG_DEVICE_EXCLUSIVE, MSG_DEVICE_SW_STATE_ON); } /** * ti_sci_cmd_idle_device() - Command to idle a device managed by TISCI * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle * @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 went fine, else return appropriate error. */ static int ti_sci_cmd_idle_device(const struct ti_sci_handle *handle, u32 id) { return ti_sci_set_device_state(handle, id, 0, MSG_DEVICE_SW_STATE_RETENTION); } static int ti_sci_cmd_idle_device_exclusive(const struct ti_sci_handle *handle, u32 id) { return ti_sci_set_device_state(handle, id, MSG_FLAG_DEVICE_EXCLUSIVE, MSG_DEVICE_SW_STATE_RETENTION); } /** * ti_sci_cmd_put_device() - command to release a device managed by TISCI * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle * @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 went fine, else return appropriate error. */ static int ti_sci_cmd_put_device(const struct ti_sci_handle *handle, u32 id) { return ti_sci_set_device_state(handle, id, 0, MSG_DEVICE_SW_STATE_AUTO_OFF); } static int ti_sci_cmd_release_exclusive_devices(const struct ti_sci_handle *handle) { struct ti_sci_exclusive_dev *dev, *tmp; struct ti_sci_info *info; int i, cnt; info = handle_to_ti_sci_info(handle); list_for_each_entry_safe(dev, tmp, &info->dev_list, list) { cnt = dev->count; debug("%s: id = %d, cnt = %d\n", __func__, dev->id, cnt); for (i = 0; i < cnt; i++) ti_sci_cmd_put_device(handle, dev->id); } return 0; } /** * ti_sci_cmd_dev_is_valid() - Is the device valid * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle * @id: Device Identifier * * Return: 0 if all went fine and the device ID is valid, else return * appropriate error. */ static int ti_sci_cmd_dev_is_valid(const struct ti_sci_handle *handle, u32 id) { u8 unused; /* check the device state which will also tell us if the ID is valid */ return ti_sci_get_device_state(handle, id, NULL, NULL, NULL, &unused); } /** * ti_sci_cmd_dev_get_clcnt() - Get context loss counter * @handle: Pointer to TISCI handle * @id: Device Identifier * @count: Pointer to Context Loss counter to populate * * Return: 0 if all went fine, else return appropriate error. */ static int ti_sci_cmd_dev_get_clcnt(const struct ti_sci_handle *handle, u32 id, u32 *count) { return ti_sci_get_device_state(handle, id, count, NULL, NULL, NULL); } /** * ti_sci_cmd_dev_is_idle() - Check if the device is requested to be idle * @handle: Pointer to TISCI handle * @id: Device Identifier * @r_state: true if requested to be idle * * Return: 0 if all went fine, else return appropriate error. */ static int ti_sci_cmd_dev_is_idle(const struct ti_sci_handle *handle, u32 id, bool *r_state) { int ret; u8 state; if (!r_state) return -EINVAL; ret = ti_sci_get_device_state(handle, id, NULL, NULL, &state, NULL); if (ret) return ret; *r_state = (state == MSG_DEVICE_SW_STATE_RETENTION); return 0; } /** * ti_sci_cmd_dev_is_stop() - Check if the device is requested to be stopped * @handle: Pointer to TISCI handle * @id: Device Identifier * @r_state: true if requested to be stopped * @curr_state: true if currently stopped. * * Return: 0 if all went fine, else return appropriate error. */ static int ti_sci_cmd_dev_is_stop(const struct ti_sci_handle *handle, u32 id, bool *r_state, bool *curr_state) { int ret; u8 p_state, c_state; if (!r_state && !curr_state) return -EINVAL; ret = ti_sci_get_device_state(handle, 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_cmd_dev_is_on() - Check if the device is requested to be ON * @handle: Pointer to TISCI handle * @id: Device Identifier * @r_state: true if requested to be ON * @curr_state: true if currently ON and active * * Return: 0 if all went fine, else return appropriate error. */ static int ti_sci_cmd_dev_is_on(const struct ti_sci_handle *handle, u32 id, bool *r_state, bool *curr_state) { int ret; u8 p_state, c_state; if (!r_state && !curr_state) return -EINVAL; ret = ti_sci_get_device_state(handle, 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_cmd_dev_is_trans() - Check if the device is currently transitioning * @handle: Pointer to TISCI handle * @id: Device Identifier * @curr_state: true if currently transitioning. * * Return: 0 if all went fine, else return appropriate error. */ static int ti_sci_cmd_dev_is_trans(const struct ti_sci_handle *handle, u32 id, bool *curr_state) { int ret; u8 state; if (!curr_state) return -EINVAL; ret = ti_sci_get_device_state(handle, id, NULL, NULL, NULL, &state); if (ret) return ret; *curr_state = (state == MSG_DEVICE_HW_STATE_TRANS); return 0; } /** * ti_sci_cmd_set_device_resets() - command to set resets for device managed * by TISCI * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle * @id: Device Identifier * @reset_state: Device specific reset bit field * * Return: 0 if all went fine, else return appropriate error. */ static int ti_sci_cmd_set_device_resets(const struct ti_sci_handle *handle, u32 id, u32 reset_state) { struct ti_sci_msg_req_set_device_resets req; struct ti_sci_msg_hdr *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_DEVICE_RESETS, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.id = id; req.resets = reset_state; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; return ret; } /** * ti_sci_cmd_get_device_resets() - Get reset state for device managed * by TISCI * @handle: Pointer to TISCI handle * @id: Device Identifier * @reset_state: Pointer to reset state to populate * * Return: 0 if all went fine, else return appropriate error. */ static int ti_sci_cmd_get_device_resets(const struct ti_sci_handle *handle, u32 id, u32 *reset_state) { return ti_sci_get_device_state(handle, id, NULL, reset_state, NULL, NULL); } /** * ti_sci_set_clock_state() - Set clock state helper * @handle: pointer to TI SCI handle * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's 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 went well, else returns appropriate error value. */ static int ti_sci_set_clock_state(const struct ti_sci_handle *handle, u32 dev_id, u8 clk_id, u32 flags, u8 state) { struct ti_sci_msg_req_set_clock_state req; struct ti_sci_msg_hdr *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_CLOCK_STATE, flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.dev_id = dev_id; req.clk_id = clk_id; req.request_state = state; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; return ret; } /** * ti_sci_cmd_get_clock_state() - Get clock state helper * @handle: pointer to TI SCI handle * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's 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 went well, else returns appropriate error value. */ static int ti_sci_cmd_get_clock_state(const struct ti_sci_handle *handle, u32 dev_id, u8 clk_id, u8 *programmed_state, u8 *current_state) { struct ti_sci_msg_resp_get_clock_state *resp; struct ti_sci_msg_req_get_clock_state req; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; if (!programmed_state && !current_state) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_CLOCK_STATE, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.dev_id = dev_id; req.clk_id = clk_id; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; resp = (struct ti_sci_msg_resp_get_clock_state *)xfer->tx_message.buf; if (programmed_state) *programmed_state = resp->programmed_state; if (current_state) *current_state = resp->current_state; return ret; } /** * ti_sci_cmd_get_clock() - Get control of a clock from TI SCI * @handle: pointer to TI SCI handle * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's own set of clock inputs. This indexes * which clock input to modify. * @needs_ssc: 'true' if Spread Spectrum clock is desired, else 'false' * @can_change_freq: 'true' if frequency change is desired, else 'false' * @enable_input_term: 'true' if input termination is desired, else 'false' * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_get_clock(const struct ti_sci_handle *handle, u32 dev_id, u8 clk_id, bool needs_ssc, bool can_change_freq, bool enable_input_term) { u32 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_set_clock_state(handle, dev_id, clk_id, flags, MSG_CLOCK_SW_STATE_REQ); } /** * ti_sci_cmd_idle_clock() - Idle a clock which is in our control * @handle: pointer to TI SCI handle * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's 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 went well, else returns appropriate error value. */ static int ti_sci_cmd_idle_clock(const struct ti_sci_handle *handle, u32 dev_id, u8 clk_id) { return ti_sci_set_clock_state(handle, dev_id, clk_id, 0, MSG_CLOCK_SW_STATE_UNREQ); } /** * ti_sci_cmd_put_clock() - Release a clock from our control back to TISCI * @handle: pointer to TI SCI handle * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's 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 went well, else returns appropriate error value. */ static int ti_sci_cmd_put_clock(const struct ti_sci_handle *handle, u32 dev_id, u8 clk_id) { return ti_sci_set_clock_state(handle, dev_id, clk_id, 0, MSG_CLOCK_SW_STATE_AUTO); } /** * ti_sci_cmd_clk_is_auto() - Is the clock being auto managed * @handle: pointer to TI SCI handle * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's 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 went well, else returns appropriate error value. */ static int ti_sci_cmd_clk_is_auto(const struct ti_sci_handle *handle, u32 dev_id, u8 clk_id, bool *req_state) { u8 state = 0; int ret; if (!req_state) return -EINVAL; ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id, &state, NULL); if (ret) return ret; *req_state = (state == MSG_CLOCK_SW_STATE_AUTO); return 0; } /** * ti_sci_cmd_clk_is_on() - Is the clock ON * @handle: pointer to TI SCI handle * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's 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 went well, else returns appropriate error value. */ static int ti_sci_cmd_clk_is_on(const struct ti_sci_handle *handle, u32 dev_id, u8 clk_id, bool *req_state, bool *curr_state) { u8 c_state = 0, r_state = 0; int ret; if (!req_state && !curr_state) return -EINVAL; ret = ti_sci_cmd_get_clock_state(handle, 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_cmd_clk_is_off() - Is the clock OFF * @handle: pointer to TI SCI handle * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's 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 went well, else returns appropriate error value. */ static int ti_sci_cmd_clk_is_off(const struct ti_sci_handle *handle, u32 dev_id, u8 clk_id, bool *req_state, bool *curr_state) { u8 c_state = 0, r_state = 0; int ret; if (!req_state && !curr_state) return -EINVAL; ret = ti_sci_cmd_get_clock_state(handle, 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_cmd_clk_set_parent() - Set the clock source of a specific device clock * @handle: pointer to TI SCI handle * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's own set of clock inputs. This indexes * which clock input to modify. * @parent_id: Parent clock identifier to set * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_clk_set_parent(const struct ti_sci_handle *handle, u32 dev_id, u8 clk_id, u8 parent_id) { struct ti_sci_msg_req_set_clock_parent req; struct ti_sci_msg_hdr *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_CLOCK_PARENT, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.dev_id = dev_id; req.clk_id = clk_id; req.parent_id = parent_id; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; return ret; } /** * ti_sci_cmd_clk_get_parent() - Get current parent clock source * @handle: pointer to TI SCI handle * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's own set of clock inputs. This indexes * which clock input to modify. * @parent_id: Current clock parent * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_clk_get_parent(const struct ti_sci_handle *handle, u32 dev_id, u8 clk_id, u8 *parent_id) { struct ti_sci_msg_resp_get_clock_parent *resp; struct ti_sci_msg_req_get_clock_parent req; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle || !parent_id) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_CLOCK_PARENT, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.dev_id = dev_id; req.clk_id = clk_id; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; *parent_id = resp->parent_id; return ret; } /** * ti_sci_cmd_clk_get_num_parents() - Get num parents of the current clk source * @handle: pointer to TI SCI handle * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's 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 went well, else returns appropriate error value. */ static int ti_sci_cmd_clk_get_num_parents(const struct ti_sci_handle *handle, u32 dev_id, u8 clk_id, u8 *num_parents) { struct ti_sci_msg_resp_get_clock_num_parents *resp; struct ti_sci_msg_req_get_clock_num_parents req; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle || !num_parents) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_NUM_CLOCK_PARENTS, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.dev_id = dev_id; req.clk_id = clk_id; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; resp = (struct ti_sci_msg_resp_get_clock_num_parents *) xfer->tx_message.buf; *num_parents = resp->num_parents; return ret; } /** * ti_sci_cmd_clk_get_match_freq() - Find a good match for frequency * @handle: pointer to TI SCI handle * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's 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 went well, else returns appropriate error value. */ static int ti_sci_cmd_clk_get_match_freq(const struct ti_sci_handle *handle, u32 dev_id, u8 clk_id, u64 min_freq, u64 target_freq, u64 max_freq, u64 *match_freq) { struct ti_sci_msg_resp_query_clock_freq *resp; struct ti_sci_msg_req_query_clock_freq req; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle || !match_freq) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_QUERY_CLOCK_FREQ, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); 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(info, xfer); if (ret) return ret; resp = (struct ti_sci_msg_resp_query_clock_freq *)xfer->tx_message.buf; *match_freq = resp->freq_hz; return ret; } /** * ti_sci_cmd_clk_set_freq() - Set a frequency for clock * @handle: pointer to TI SCI handle * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's 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 went well, else returns appropriate error value. */ static int ti_sci_cmd_clk_set_freq(const struct ti_sci_handle *handle, u32 dev_id, u8 clk_id, u64 min_freq, u64 target_freq, u64 max_freq) { struct ti_sci_msg_req_set_clock_freq req; struct ti_sci_msg_hdr *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_CLOCK_FREQ, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); 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(info, xfer); if (ret) return ret; return ret; } /** * ti_sci_cmd_clk_get_freq() - Get current frequency * @handle: pointer to TI SCI handle * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's own set of clock inputs. This indexes * which clock input to modify. * @freq: Currently frequency in Hz * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_clk_get_freq(const struct ti_sci_handle *handle, u32 dev_id, u8 clk_id, u64 *freq) { struct ti_sci_msg_resp_get_clock_freq *resp; struct ti_sci_msg_req_get_clock_freq req; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle || !freq) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_CLOCK_FREQ, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.dev_id = dev_id; req.clk_id = clk_id; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; resp = (struct ti_sci_msg_resp_get_clock_freq *)xfer->tx_message.buf; *freq = resp->freq_hz; return ret; } /** * ti_sci_cmd_core_reboot() - Command to request system reset * @handle: pointer to TI SCI handle * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_core_reboot(const struct ti_sci_handle *handle) { struct ti_sci_msg_req_reboot req; struct ti_sci_msg_hdr *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SYS_RESET, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.domain = 0; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; return ret; } /** * ti_sci_get_resource_range - Helper to get a range of resources assigned * to a host. Resource is uniquely identified by * type and subtype. * @handle: Pointer to TISCI handle. * @dev_id: TISCI device ID. * @subtype: Resource assignment subtype that is being requested * from the given device. * @s_host: Host processor ID to which the resources are allocated * @range_start: Start index of the resource range * @range_num: Number of resources in the range * * Return: 0 if all went fine, else return appropriate error. */ static int ti_sci_get_resource_range(const struct ti_sci_handle *handle, u32 dev_id, u8 subtype, u8 s_host, u16 *range_start, u16 *range_num) { struct ti_sci_msg_resp_get_resource_range *resp; struct ti_sci_msg_req_get_resource_range req; struct ti_sci_xfer *xfer; struct ti_sci_info *info; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_RESOURCE_RANGE, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.secondary_host = s_host; req.type = dev_id & MSG_RM_RESOURCE_TYPE_MASK; req.subtype = subtype & MSG_RM_RESOURCE_SUBTYPE_MASK; ret = ti_sci_do_xfer(info, xfer); if (ret) goto fail; resp = (struct ti_sci_msg_resp_get_resource_range *)xfer->tx_message.buf; if (!resp->range_start && !resp->range_num) { ret = -ENODEV; } else { *range_start = resp->range_start; *range_num = resp->range_num; }; fail: return ret; } static int __maybe_unused ti_sci_cmd_get_resource_range_static(const struct ti_sci_handle *handle, u32 dev_id, u8 subtype, u16 *range_start, u16 *range_num) { struct ti_sci_resource_static_data *data; int i = 0; while (1) { data = &rm_static_data[i]; if (!data->dev_id) return -EINVAL; if (data->dev_id != dev_id || data->subtype != subtype) { i++; continue; } *range_start = data->range_start; *range_num = data->range_num; return 0; } return -EINVAL; } /** * ti_sci_cmd_get_resource_range - Get a range of resources assigned to host * that is same as ti sci interface host. * @handle: Pointer to TISCI handle. * @dev_id: TISCI device ID. * @subtype: Resource assignment subtype that is being requested * from the given device. * @range_start: Start index of the resource range * @range_num: Number of resources in the range * * Return: 0 if all went fine, else return appropriate error. */ static int ti_sci_cmd_get_resource_range(const struct ti_sci_handle *handle, u32 dev_id, u8 subtype, u16 *range_start, u16 *range_num) { return ti_sci_get_resource_range(handle, dev_id, subtype, TI_SCI_IRQ_SECONDARY_HOST_INVALID, range_start, range_num); } /** * ti_sci_cmd_get_resource_range_from_shost - Get a range of resources * assigned to a specified host. * @handle: Pointer to TISCI handle. * @dev_id: TISCI device ID. * @subtype: Resource assignment subtype that is being requested * from the given device. * @s_host: Host processor ID to which the resources are allocated * @range_start: Start index of the resource range * @range_num: Number of resources in the range * * Return: 0 if all went fine, else return appropriate error. */ static int ti_sci_cmd_get_resource_range_from_shost(const struct ti_sci_handle *handle, u32 dev_id, u8 subtype, u8 s_host, u16 *range_start, u16 *range_num) { return ti_sci_get_resource_range(handle, dev_id, subtype, s_host, range_start, range_num); } /** * ti_sci_cmd_query_msmc() - Command to query currently available msmc memory * @handle: pointer to TI SCI handle * @msms_start: MSMC start as returned by tisci * @msmc_end: MSMC end as returned by tisci * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_query_msmc(const struct ti_sci_handle *handle, u64 *msmc_start, u64 *msmc_end) { struct ti_sci_msg_resp_query_msmc *resp; struct ti_sci_msg_hdr req; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_QUERY_MSMC, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; resp = (struct ti_sci_msg_resp_query_msmc *)xfer->tx_message.buf; *msmc_start = ((u64)resp->msmc_start_high << TISCI_ADDR_HIGH_SHIFT) | resp->msmc_start_low; *msmc_end = ((u64)resp->msmc_end_high << TISCI_ADDR_HIGH_SHIFT) | resp->msmc_end_low; return ret; } /** * ti_sci_cmd_proc_request() - Command to request a physical processor control * @handle: Pointer to TI SCI handle * @proc_id: Processor ID this request is for * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_proc_request(const struct ti_sci_handle *handle, u8 proc_id) { struct ti_sci_msg_req_proc_request req; struct ti_sci_msg_hdr *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_PROC_REQUEST, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.processor_id = proc_id; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; return ret; } /** * ti_sci_cmd_proc_release() - Command to release a physical processor control * @handle: Pointer to TI SCI handle * @proc_id: Processor ID this request is for * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_proc_release(const struct ti_sci_handle *handle, u8 proc_id) { struct ti_sci_msg_req_proc_release req; struct ti_sci_msg_hdr *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_PROC_RELEASE, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.processor_id = proc_id; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; return ret; } /** * ti_sci_cmd_proc_handover() - Command to handover a physical processor * control to a host in the processor's access * control list. * @handle: Pointer to TI SCI handle * @proc_id: Processor ID this request is for * @host_id: Host ID to get the control of the processor * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_proc_handover(const struct ti_sci_handle *handle, u8 proc_id, u8 host_id) { struct ti_sci_msg_req_proc_handover req; struct ti_sci_msg_hdr *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_PROC_HANDOVER, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.processor_id = proc_id; req.host_id = host_id; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; return ret; } /** * ti_sci_cmd_set_proc_boot_cfg() - Command to set the processor boot * configuration flags * @handle: Pointer to TI SCI handle * @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 went well, else returns appropriate error value. */ static int ti_sci_cmd_set_proc_boot_cfg(const struct ti_sci_handle *handle, u8 proc_id, u64 bootvector, u32 config_flags_set, u32 config_flags_clear) { struct ti_sci_msg_req_set_proc_boot_config req; struct ti_sci_msg_hdr *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_SET_PROC_BOOT_CONFIG, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); 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(info, xfer); if (ret) return ret; return ret; } /** * ti_sci_cmd_set_proc_boot_ctrl() - Command to set the processor boot * control flags * @handle: Pointer to TI SCI handle * @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 went well, else returns appropriate error value. */ static int ti_sci_cmd_set_proc_boot_ctrl(const struct ti_sci_handle *handle, u8 proc_id, u32 control_flags_set, u32 control_flags_clear) { struct ti_sci_msg_req_set_proc_boot_ctrl req; struct ti_sci_msg_hdr *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_SET_PROC_BOOT_CTRL, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); 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(info, xfer); if (ret) return ret; return ret; } /** * ti_sci_cmd_proc_auth_boot_image() - Command to authenticate and load the * image and then set the processor configuration flags. * @handle: Pointer to TI SCI handle * @image_addr: Memory address at which payload image and certificate is * located in memory, this is updated if the image data is * moved during authentication. * @image_size: This is updated with the final size of the image after * authentication. * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_proc_auth_boot_image(const struct ti_sci_handle *handle, u64 *image_addr, u32 *image_size) { struct ti_sci_msg_req_proc_auth_boot_image req; struct ti_sci_msg_resp_proc_auth_boot_image *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_PROC_AUTH_BOOT_IMAGE, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.cert_addr_low = *image_addr & TISCI_ADDR_LOW_MASK; req.cert_addr_high = (*image_addr & TISCI_ADDR_HIGH_MASK) >> TISCI_ADDR_HIGH_SHIFT; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; resp = (struct ti_sci_msg_resp_proc_auth_boot_image *)xfer->tx_message.buf; *image_addr = (resp->image_addr_low & TISCI_ADDR_LOW_MASK) | (((u64)resp->image_addr_high << TISCI_ADDR_HIGH_SHIFT) & TISCI_ADDR_HIGH_MASK); *image_size = resp->image_size; return ret; } /** * ti_sci_cmd_get_proc_boot_status() - Command to get the processor boot status * @handle: Pointer to TI SCI handle * @proc_id: Processor ID this request is for * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_get_proc_boot_status(const struct ti_sci_handle *handle, u8 proc_id, u64 *bv, u32 *cfg_flags, u32 *ctrl_flags, u32 *sts_flags) { struct ti_sci_msg_resp_get_proc_boot_status *resp; struct ti_sci_msg_req_get_proc_boot_status req; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_GET_PROC_BOOT_STATUS, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.processor_id = proc_id; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; resp = (struct ti_sci_msg_resp_get_proc_boot_status *) xfer->tx_message.buf; *bv = (resp->bootvector_low & TISCI_ADDR_LOW_MASK) | (((u64)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 ret; } /** * ti_sci_proc_wait_boot_status_no_wait() - Helper function to 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 */ static int ti_sci_proc_wait_boot_status_no_wait(const struct ti_sci_handle *handle, u8 proc_id, u8 num_wait_iterations, u8 num_match_iterations, u8 delay_per_iteration_us, u8 delay_before_iterations_us, u32 status_flags_1_set_all_wait, u32 status_flags_1_set_any_wait, u32 status_flags_1_clr_all_wait, u32 status_flags_1_clr_any_wait) { struct ti_sci_msg_req_wait_proc_boot_status req; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_WAIT_PROC_BOOT_STATUS, TI_SCI_FLAG_REQ_GENERIC_NORESPONSE, (u32 *)&req, sizeof(req), 0); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); 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(info, xfer); if (ret) return ret; return ret; } /** * ti_sci_cmd_proc_shutdown_no_wait() - Command to shutdown a core without * requesting or waiting for a response. Note that this API call * should be followed by placing the respective processor into * either WFE or WFI mode. * @handle: Pointer to TI SCI handle * @proc_id: Processor ID this request is for * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_proc_shutdown_no_wait(const struct ti_sci_handle *handle, u8 proc_id) { int ret; struct ti_sci_info *info; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); /* * Send the core boot status wait message waiting for either WFE or * WFI without requesting or waiting for a TISCI response with the * maximum wait time to give us the best chance to get to the WFE/WFI * command that should follow the invocation of this API before the * DMSC-internal processing of this command times out. Note that * waiting for the R5 WFE/WFI flags will also work on an ARMV8 type * core as the related flag bit positions are the same. */ ret = ti_sci_proc_wait_boot_status_no_wait(handle, proc_id, U8_MAX, 100, U8_MAX, U8_MAX, 0, PROC_BOOT_STATUS_FLAG_R5_WFE | PROC_BOOT_STATUS_FLAG_R5_WFI, 0, 0); if (ret) { dev_err(info->dev, "Sending core %u wait message fail %d\n", proc_id, ret); return ret; } /* * Release a processor managed by TISCI without requesting or waiting * for a response. */ ret = ti_sci_set_device_state_no_wait(handle, proc_id, 0, MSG_DEVICE_SW_STATE_AUTO_OFF); if (ret) dev_err(info->dev, "Sending core %u shutdown message fail %d\n", proc_id, ret); return ret; } /** * ti_sci_cmd_ring_config() - configure RA ring * @handle: pointer to TI SCI handle * @valid_params: Bitfield defining validity of ring configuration parameters. * @nav_id: Device ID of Navigator Subsystem from which the ring is allocated * @index: Ring index. * @addr_lo: The ring base address lo 32 bits * @addr_hi: The ring base address hi 32 bits * @count: Number of ring elements. * @mode: The mode of the ring * @size: The ring element size. * @order_id: Specifies the ring's bus order ID. * * Return: 0 if all went well, else returns appropriate error value. * * See @ti_sci_msg_rm_ring_cfg_req for more info. */ static int ti_sci_cmd_ring_config(const struct ti_sci_handle *handle, u32 valid_params, u16 nav_id, u16 index, u32 addr_lo, u32 addr_hi, u32 count, u8 mode, u8 size, u8 order_id) { struct ti_sci_msg_rm_ring_cfg_resp *resp; struct ti_sci_msg_rm_ring_cfg_req req; struct ti_sci_xfer *xfer; struct ti_sci_info *info; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_RM_RING_CFG, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.valid_params = valid_params; req.nav_id = nav_id; req.index = index; req.addr_lo = addr_lo; req.addr_hi = addr_hi; req.count = count; req.mode = mode; req.size = size; req.order_id = order_id; ret = ti_sci_do_xfer(info, xfer); if (ret) goto fail; fail: dev_dbg(info->dev, "RM_RA:config ring %u ret:%d\n", index, ret); return ret; } static int ti_sci_cmd_rm_psil_pair(const struct ti_sci_handle *handle, u32 nav_id, u32 src_thread, u32 dst_thread) { struct ti_sci_msg_hdr *resp; struct ti_sci_msg_psil_pair req; struct ti_sci_xfer *xfer; struct ti_sci_info *info; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_RM_PSIL_PAIR, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.nav_id = nav_id; req.src_thread = src_thread; req.dst_thread = dst_thread; ret = ti_sci_do_xfer(info, xfer); if (ret) goto fail; fail: dev_dbg(info->dev, "RM_PSIL: nav: %u link pair %u->%u ret:%u\n", nav_id, src_thread, dst_thread, ret); return ret; } static int ti_sci_cmd_rm_psil_unpair(const struct ti_sci_handle *handle, u32 nav_id, u32 src_thread, u32 dst_thread) { struct ti_sci_msg_hdr *resp; struct ti_sci_msg_psil_unpair req; struct ti_sci_xfer *xfer; struct ti_sci_info *info; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_RM_PSIL_UNPAIR, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.nav_id = nav_id; req.src_thread = src_thread; req.dst_thread = dst_thread; ret = ti_sci_do_xfer(info, xfer); if (ret) goto fail; fail: dev_dbg(info->dev, "RM_PSIL: link unpair %u->%u ret:%u\n", src_thread, dst_thread, ret); return ret; } static int ti_sci_cmd_rm_udmap_tx_ch_cfg( const struct ti_sci_handle *handle, const struct ti_sci_msg_rm_udmap_tx_ch_cfg *params) { struct ti_sci_msg_rm_udmap_tx_ch_cfg_resp *resp; struct ti_sci_msg_rm_udmap_tx_ch_cfg_req req; struct ti_sci_xfer *xfer; struct ti_sci_info *info; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_RM_UDMAP_TX_CH_CFG, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.valid_params = params->valid_params; req.nav_id = params->nav_id; req.index = params->index; req.tx_pause_on_err = params->tx_pause_on_err; req.tx_filt_einfo = params->tx_filt_einfo; req.tx_filt_pswords = params->tx_filt_pswords; req.tx_atype = params->tx_atype; req.tx_chan_type = params->tx_chan_type; req.tx_supr_tdpkt = params->tx_supr_tdpkt; req.tx_fetch_size = params->tx_fetch_size; req.tx_credit_count = params->tx_credit_count; req.txcq_qnum = params->txcq_qnum; req.tx_priority = params->tx_priority; req.tx_qos = params->tx_qos; req.tx_orderid = params->tx_orderid; req.fdepth = params->fdepth; req.tx_sched_priority = params->tx_sched_priority; req.tx_burst_size = params->tx_burst_size; req.tx_tdtype = params->tx_tdtype; req.extended_ch_type = params->extended_ch_type; ret = ti_sci_do_xfer(info, xfer); if (ret) goto fail; fail: dev_dbg(info->dev, "TX_CH_CFG: chn %u ret:%u\n", params->index, ret); return ret; } static int ti_sci_cmd_rm_udmap_rx_ch_cfg( const struct ti_sci_handle *handle, const struct ti_sci_msg_rm_udmap_rx_ch_cfg *params) { struct ti_sci_msg_rm_udmap_rx_ch_cfg_resp *resp; struct ti_sci_msg_rm_udmap_rx_ch_cfg_req req; struct ti_sci_xfer *xfer; struct ti_sci_info *info; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_RM_UDMAP_RX_CH_CFG, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.valid_params = params->valid_params; req.nav_id = params->nav_id; req.index = params->index; req.rx_fetch_size = params->rx_fetch_size; req.rxcq_qnum = params->rxcq_qnum; req.rx_priority = params->rx_priority; req.rx_qos = params->rx_qos; req.rx_orderid = params->rx_orderid; req.rx_sched_priority = params->rx_sched_priority; req.flowid_start = params->flowid_start; req.flowid_cnt = params->flowid_cnt; req.rx_pause_on_err = params->rx_pause_on_err; req.rx_atype = params->rx_atype; req.rx_chan_type = params->rx_chan_type; req.rx_ignore_short = params->rx_ignore_short; req.rx_ignore_long = params->rx_ignore_long; ret = ti_sci_do_xfer(info, xfer); if (ret) goto fail; fail: dev_dbg(info->dev, "RX_CH_CFG: chn %u ret:%d\n", params->index, ret); return ret; } static int ti_sci_cmd_rm_udmap_rx_flow_cfg( const struct ti_sci_handle *handle, const struct ti_sci_msg_rm_udmap_flow_cfg *params) { struct ti_sci_msg_rm_udmap_flow_cfg_resp *resp; struct ti_sci_msg_rm_udmap_flow_cfg_req req; struct ti_sci_xfer *xfer; struct ti_sci_info *info; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_RM_UDMAP_FLOW_CFG, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.valid_params = params->valid_params; req.nav_id = params->nav_id; req.flow_index = params->flow_index; req.rx_einfo_present = params->rx_einfo_present; req.rx_psinfo_present = params->rx_psinfo_present; req.rx_error_handling = params->rx_error_handling; req.rx_desc_type = params->rx_desc_type; req.rx_sop_offset = params->rx_sop_offset; req.rx_dest_qnum = params->rx_dest_qnum; req.rx_src_tag_hi = params->rx_src_tag_hi; req.rx_src_tag_lo = params->rx_src_tag_lo; req.rx_dest_tag_hi = params->rx_dest_tag_hi; req.rx_dest_tag_lo = params->rx_dest_tag_lo; req.rx_src_tag_hi_sel = params->rx_src_tag_hi_sel; req.rx_src_tag_lo_sel = params->rx_src_tag_lo_sel; req.rx_dest_tag_hi_sel = params->rx_dest_tag_hi_sel; req.rx_dest_tag_lo_sel = params->rx_dest_tag_lo_sel; req.rx_fdq0_sz0_qnum = params->rx_fdq0_sz0_qnum; req.rx_fdq1_qnum = params->rx_fdq1_qnum; req.rx_fdq2_qnum = params->rx_fdq2_qnum; req.rx_fdq3_qnum = params->rx_fdq3_qnum; req.rx_ps_location = params->rx_ps_location; ret = ti_sci_do_xfer(info, xfer); if (ret) goto fail; fail: dev_dbg(info->dev, "RX_FL_CFG: %u ret:%d\n", params->flow_index, ret); return ret; } /** * ti_sci_cmd_set_fwl_region() - Request for configuring a firewall region * @handle: pointer to TI SCI handle * @region: region configuration parameters * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_set_fwl_region(const struct ti_sci_handle *handle, const struct ti_sci_msg_fwl_region *region) { struct ti_sci_msg_fwl_set_firewall_region_req req; struct ti_sci_msg_hdr *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_FWL_SET, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.fwl_id = region->fwl_id; req.region = region->region; req.n_permission_regs = region->n_permission_regs; req.control = region->control; req.permissions[0] = region->permissions[0]; req.permissions[1] = region->permissions[1]; req.permissions[2] = region->permissions[2]; req.start_address = region->start_address; req.end_address = region->end_address; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; return 0; } /** * ti_sci_cmd_get_fwl_region() - Request for getting a firewall region * @handle: pointer to TI SCI handle * @region: region configuration parameters * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_get_fwl_region(const struct ti_sci_handle *handle, struct ti_sci_msg_fwl_region *region) { struct ti_sci_msg_fwl_get_firewall_region_req req; struct ti_sci_msg_fwl_get_firewall_region_resp *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_FWL_GET, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.fwl_id = region->fwl_id; req.region = region->region; req.n_permission_regs = region->n_permission_regs; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; resp = (struct ti_sci_msg_fwl_get_firewall_region_resp *)xfer->tx_message.buf; region->fwl_id = resp->fwl_id; region->region = resp->region; region->n_permission_regs = resp->n_permission_regs; region->control = resp->control; region->permissions[0] = resp->permissions[0]; region->permissions[1] = resp->permissions[1]; region->permissions[2] = resp->permissions[2]; region->start_address = resp->start_address; region->end_address = resp->end_address; return 0; } /** * ti_sci_cmd_change_fwl_owner() - Request for changing a firewall owner * @handle: pointer to TI SCI handle * @region: region configuration parameters * * Return: 0 if all went well, else returns appropriate error value. */ static int ti_sci_cmd_change_fwl_owner(const struct ti_sci_handle *handle, struct ti_sci_msg_fwl_owner *owner) { struct ti_sci_msg_fwl_change_owner_info_req req; struct ti_sci_msg_fwl_change_owner_info_resp *resp; struct ti_sci_info *info; struct ti_sci_xfer *xfer; int ret = 0; if (IS_ERR(handle)) return PTR_ERR(handle); if (!handle) return -EINVAL; info = handle_to_ti_sci_info(handle); xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_FWL_CHANGE_OWNER, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, (u32 *)&req, sizeof(req), sizeof(*resp)); if (IS_ERR(xfer)) { ret = PTR_ERR(xfer); return ret; } req.fwl_id = owner->fwl_id; req.region = owner->region; req.owner_index = owner->owner_index; ret = ti_sci_do_xfer(info, xfer); if (ret) return ret; resp = (struct ti_sci_msg_fwl_change_owner_info_resp *)xfer->tx_message.buf; owner->fwl_id = resp->fwl_id; owner->region = resp->region; owner->owner_index = resp->owner_index; owner->owner_privid = resp->owner_privid; owner->owner_permission_bits = resp->owner_permission_bits; return ret; } /* * ti_sci_setup_ops() - Setup the operations structures * @info: pointer to TISCI pointer */ static void ti_sci_setup_ops(struct ti_sci_info *info) { struct ti_sci_ops *ops = &info->handle.ops; struct ti_sci_board_ops *bops = &ops->board_ops; struct ti_sci_dev_ops *dops = &ops->dev_ops; struct ti_sci_clk_ops *cops = &ops->clk_ops; struct ti_sci_core_ops *core_ops = &ops->core_ops; struct ti_sci_rm_core_ops *rm_core_ops = &ops->rm_core_ops; struct ti_sci_proc_ops *pops = &ops->proc_ops; struct ti_sci_rm_ringacc_ops *rops = &ops->rm_ring_ops; struct ti_sci_rm_psil_ops *psilops = &ops->rm_psil_ops; struct ti_sci_rm_udmap_ops *udmap_ops = &ops->rm_udmap_ops; struct ti_sci_fwl_ops *fwl_ops = &ops->fwl_ops; bops->board_config = ti_sci_cmd_set_board_config; bops->board_config_rm = ti_sci_cmd_set_board_config_rm; bops->board_config_security = ti_sci_cmd_set_board_config_security; bops->board_config_pm = ti_sci_cmd_set_board_config_pm; dops->get_device = ti_sci_cmd_get_device; dops->get_device_exclusive = ti_sci_cmd_get_device_exclusive; dops->idle_device = ti_sci_cmd_idle_device; dops->idle_device_exclusive = ti_sci_cmd_idle_device_exclusive; dops->put_device = ti_sci_cmd_put_device; dops->is_valid = ti_sci_cmd_dev_is_valid; dops->get_context_loss_count = ti_sci_cmd_dev_get_clcnt; dops->is_idle = ti_sci_cmd_dev_is_idle; dops->is_stop = ti_sci_cmd_dev_is_stop; dops->is_on = ti_sci_cmd_dev_is_on; dops->is_transitioning = ti_sci_cmd_dev_is_trans; dops->set_device_resets = ti_sci_cmd_set_device_resets; dops->get_device_resets = ti_sci_cmd_get_device_resets; dops->release_exclusive_devices = ti_sci_cmd_release_exclusive_devices; cops->get_clock = ti_sci_cmd_get_clock; cops->idle_clock = ti_sci_cmd_idle_clock; cops->put_clock = ti_sci_cmd_put_clock; cops->is_auto = ti_sci_cmd_clk_is_auto; cops->is_on = ti_sci_cmd_clk_is_on; cops->is_off = ti_sci_cmd_clk_is_off; cops->set_parent = ti_sci_cmd_clk_set_parent; cops->get_parent = ti_sci_cmd_clk_get_parent; cops->get_num_parents = ti_sci_cmd_clk_get_num_parents; cops->get_best_match_freq = ti_sci_cmd_clk_get_match_freq; cops->set_freq = ti_sci_cmd_clk_set_freq; cops->get_freq = ti_sci_cmd_clk_get_freq; core_ops->reboot_device = ti_sci_cmd_core_reboot; core_ops->query_msmc = ti_sci_cmd_query_msmc; rm_core_ops->get_range = ti_sci_cmd_get_resource_range; rm_core_ops->get_range_from_shost = ti_sci_cmd_get_resource_range_from_shost; pops->proc_request = ti_sci_cmd_proc_request; pops->proc_release = ti_sci_cmd_proc_release; pops->proc_handover = ti_sci_cmd_proc_handover; pops->set_proc_boot_cfg = ti_sci_cmd_set_proc_boot_cfg; pops->set_proc_boot_ctrl = ti_sci_cmd_set_proc_boot_ctrl; pops->proc_auth_boot_image = ti_sci_cmd_proc_auth_boot_image; pops->get_proc_boot_status = ti_sci_cmd_get_proc_boot_status; pops->proc_shutdown_no_wait = ti_sci_cmd_proc_shutdown_no_wait; rops->config = ti_sci_cmd_ring_config; psilops->pair = ti_sci_cmd_rm_psil_pair; psilops->unpair = ti_sci_cmd_rm_psil_unpair; udmap_ops->tx_ch_cfg = ti_sci_cmd_rm_udmap_tx_ch_cfg; udmap_ops->rx_ch_cfg = ti_sci_cmd_rm_udmap_rx_ch_cfg; udmap_ops->rx_flow_cfg = ti_sci_cmd_rm_udmap_rx_flow_cfg; fwl_ops->set_fwl_region = ti_sci_cmd_set_fwl_region; fwl_ops->get_fwl_region = ti_sci_cmd_get_fwl_region; fwl_ops->change_fwl_owner = ti_sci_cmd_change_fwl_owner; } /** * ti_sci_get_handle_from_sysfw() - Get the TI SCI handle of the SYSFW * @dev: Pointer to the SYSFW device * * Return: pointer to handle if successful, else EINVAL if invalid conditions * are encountered. */ const struct ti_sci_handle *ti_sci_get_handle_from_sysfw(struct udevice *sci_dev) { int ret; if (!sci_dev) return ERR_PTR(-EINVAL); struct ti_sci_info *info = dev_get_priv(sci_dev); if (!info) return ERR_PTR(-EINVAL); struct ti_sci_handle *handle = &info->handle; if (!handle) return ERR_PTR(-EINVAL); ret = ti_sci_cmd_get_revision(handle); if (ret) return ERR_PTR(-EINVAL); return handle; } /** * ti_sci_get_handle() - Get the TI SCI handle for a device * @dev: Pointer to device for which we want SCI handle * * Return: pointer to handle if successful, else EINVAL if invalid conditions * are encountered. */ const struct ti_sci_handle *ti_sci_get_handle(struct udevice *dev) { if (!dev) return ERR_PTR(-EINVAL); struct udevice *sci_dev = dev_get_parent(dev); return ti_sci_get_handle_from_sysfw(sci_dev); } /** * ti_sci_get_by_phandle() - Get the TI SCI handle using DT phandle * @dev: device node * @propname: property name containing phandle on TISCI node * * Return: pointer to handle if successful, else appropriate error value. */ const struct ti_sci_handle *ti_sci_get_by_phandle(struct udevice *dev, const char *property) { struct ti_sci_info *entry, *info = NULL; u32 phandle, err; ofnode node; err = ofnode_read_u32(dev_ofnode(dev), property, &phandle); if (err) return ERR_PTR(err); node = ofnode_get_by_phandle(phandle); if (!ofnode_valid(node)) return ERR_PTR(-EINVAL); list_for_each_entry(entry, &ti_sci_list, list) if (ofnode_equal(dev_ofnode(entry->dev), node)) { info = entry; break; } if (!info) return ERR_PTR(-ENODEV); return &info->handle; } /** * ti_sci_of_to_info() - generate private data from device tree * @dev: corresponding system controller interface device * @info: pointer to driver specific private data * * Return: 0 if all goes good, else appropriate error message. */ static int ti_sci_of_to_info(struct udevice *dev, struct ti_sci_info *info) { int ret; ret = mbox_get_by_name(dev, "tx", &info->chan_tx); if (ret) { dev_err(dev, "%s: Acquiring Tx channel failed. ret = %d\n", __func__, ret); return ret; } ret = mbox_get_by_name(dev, "rx", &info->chan_rx); if (ret) { dev_err(dev, "%s: Acquiring Rx channel failed. ret = %d\n", __func__, ret); return ret; } /* Notify channel is optional. Enable only if populated */ ret = mbox_get_by_name(dev, "notify", &info->chan_notify); if (ret) { dev_dbg(dev, "%s: Acquiring notify channel failed. ret = %d\n", __func__, ret); } info->host_id = dev_read_u32_default(dev, "ti,host-id", info->desc->default_host_id); info->is_secure = dev_read_bool(dev, "ti,secure-host"); return 0; } /** * ti_sci_probe() - Basic probe * @dev: corresponding system controller interface device * * Return: 0 if all goes good, else appropriate error message. */ static int ti_sci_probe(struct udevice *dev) { struct ti_sci_info *info; int ret; debug("%s(dev=%p)\n", __func__, dev); info = dev_get_priv(dev); info->desc = (void *)dev_get_driver_data(dev); ret = ti_sci_of_to_info(dev, info); if (ret) { dev_err(dev, "%s: Probe failed with error %d\n", __func__, ret); return ret; } info->dev = dev; info->seq = 0xA; list_add_tail(&info->list, &ti_sci_list); ti_sci_setup_ops(info); INIT_LIST_HEAD(&info->dev_list); if (IS_ENABLED(CONFIG_SYSRESET_TI_SCI)) { ret = device_bind_driver(dev, "ti-sci-sysreset", "sysreset", NULL); if (ret) dev_warn(dev, "cannot bind SYSRESET (ret = %d)\n", ret); } return 0; } /** * ti_sci_dm_probe() - Basic probe for DM to TIFS SCI * @dev: corresponding system controller interface device * * Return: 0 if all goes good, else appropriate error message. */ static __maybe_unused int ti_sci_dm_probe(struct udevice *dev) { struct ti_sci_rm_core_ops *rm_core_ops; struct ti_sci_rm_udmap_ops *udmap_ops; struct ti_sci_rm_ringacc_ops *rops; struct ti_sci_rm_psil_ops *psilops; struct ti_sci_ops *ops; struct ti_sci_info *info; int ret; debug("%s(dev=%p)\n", __func__, dev); info = dev_get_priv(dev); info->desc = (void *)dev_get_driver_data(dev); ret = ti_sci_of_to_info(dev, info); if (ret) { dev_err(dev, "%s: Probe failed with error %d\n", __func__, ret); return ret; } info->dev = dev; info->seq = 0xA; list_add_tail(&info->list, &ti_sci_list); ops = &info->handle.ops; rm_core_ops = &ops->rm_core_ops; rm_core_ops->get_range = ti_sci_cmd_get_resource_range_static; rops = &ops->rm_ring_ops; rops->config = ti_sci_cmd_ring_config; psilops = &ops->rm_psil_ops; psilops->pair = ti_sci_cmd_rm_psil_pair; psilops->unpair = ti_sci_cmd_rm_psil_unpair; udmap_ops = &ops->rm_udmap_ops; udmap_ops->tx_ch_cfg = ti_sci_cmd_rm_udmap_tx_ch_cfg; udmap_ops->rx_ch_cfg = ti_sci_cmd_rm_udmap_rx_ch_cfg; udmap_ops->rx_flow_cfg = ti_sci_cmd_rm_udmap_rx_flow_cfg; return ret; } /* * ti_sci_get_free_resource() - Get a free resource from TISCI resource. * @res: Pointer to the TISCI resource * * Return: resource num if all went ok else TI_SCI_RESOURCE_NULL. */ u16 ti_sci_get_free_resource(struct ti_sci_resource *res) { u16 set, free_bit; for (set = 0; set < res->sets; set++) { free_bit = find_first_zero_bit(res->desc[set].res_map, res->desc[set].num); if (free_bit != res->desc[set].num) { set_bit(free_bit, res->desc[set].res_map); return res->desc[set].start + free_bit; } } return TI_SCI_RESOURCE_NULL; } /** * ti_sci_release_resource() - Release a resource from TISCI resource. * @res: Pointer to the TISCI resource */ void ti_sci_release_resource(struct ti_sci_resource *res, u16 id) { u16 set; for (set = 0; set < res->sets; set++) { if (res->desc[set].start <= id && (res->desc[set].num + res->desc[set].start) > id) clear_bit(id - res->desc[set].start, res->desc[set].res_map); } } /** * devm_ti_sci_get_of_resource() - Get a TISCI resource assigned to a device * @handle: TISCI handle * @dev: Device pointer to which the resource is assigned * @of_prop: property name by which the resource are represented * * Note: This function expects of_prop to be in the form of tuples * . Allocates and initializes ti_sci_resource structure * for each of_prop. Client driver can directly call * ti_sci_(get_free, release)_resource apis for handling the resource. * * Return: Pointer to ti_sci_resource if all went well else appropriate * error pointer. */ struct ti_sci_resource * devm_ti_sci_get_of_resource(const struct ti_sci_handle *handle, struct udevice *dev, u32 dev_id, char *of_prop) { u32 resource_subtype; struct ti_sci_resource *res; bool valid_set = false; int sets, i, ret; u32 *temp; res = devm_kzalloc(dev, sizeof(*res), GFP_KERNEL); if (!res) return ERR_PTR(-ENOMEM); sets = dev_read_size(dev, of_prop); if (sets < 0) { dev_err(dev, "%s resource type ids not available\n", of_prop); return ERR_PTR(sets); } temp = malloc(sets); sets /= sizeof(u32); res->sets = sets; res->desc = devm_kcalloc(dev, res->sets, sizeof(*res->desc), GFP_KERNEL); if (!res->desc) return ERR_PTR(-ENOMEM); ret = dev_read_u32_array(dev, of_prop, temp, res->sets); if (ret) return ERR_PTR(-EINVAL); for (i = 0; i < res->sets; i++) { resource_subtype = temp[i]; ret = handle->ops.rm_core_ops.get_range(handle, dev_id, resource_subtype, &res->desc[i].start, &res->desc[i].num); if (ret) { dev_dbg(dev, "type %d subtype %d not allocated for host %d\n", dev_id, resource_subtype, handle_to_ti_sci_info(handle)->host_id); res->desc[i].start = 0; res->desc[i].num = 0; continue; } valid_set = true; dev_dbg(dev, "res type = %d, subtype = %d, start = %d, num = %d\n", dev_id, resource_subtype, res->desc[i].start, res->desc[i].num); res->desc[i].res_map = devm_kzalloc(dev, BITS_TO_LONGS(res->desc[i].num) * sizeof(*res->desc[i].res_map), GFP_KERNEL); if (!res->desc[i].res_map) return ERR_PTR(-ENOMEM); } if (valid_set) return res; return ERR_PTR(-EINVAL); } /* Description for K2G */ static const struct ti_sci_desc ti_sci_pmmc_k2g_desc = { .default_host_id = 2, /* Conservative duration */ .max_rx_timeout_ms = 10000, /* Limited by MBOX_TX_QUEUE_LEN. K2G can handle upto 128 messages! */ .max_msgs = 20, .max_msg_size = 64, }; /* Description for AM654 */ static const struct ti_sci_desc ti_sci_pmmc_am654_desc = { .default_host_id = 12, /* Conservative duration */ .max_rx_timeout_ms = 10000, /* Limited by MBOX_TX_QUEUE_LEN. K2G can handle upto 128 messages! */ .max_msgs = 20, .max_msg_size = 60, }; /* Description for J721e DM to DMSC communication */ static const struct ti_sci_desc ti_sci_dm_j721e_desc = { .default_host_id = 3, .max_rx_timeout_ms = 10000, .max_msgs = 20, .max_msg_size = 60, }; static const struct udevice_id ti_sci_ids[] = { { .compatible = "ti,k2g-sci", .data = (ulong)&ti_sci_pmmc_k2g_desc }, { .compatible = "ti,am654-sci", .data = (ulong)&ti_sci_pmmc_am654_desc }, { /* Sentinel */ }, }; static __maybe_unused const struct udevice_id ti_sci_dm_ids[] = { { .compatible = "ti,j721e-dm-sci", .data = (ulong)&ti_sci_dm_j721e_desc }, { /* Sentinel */ }, }; U_BOOT_DRIVER(ti_sci) = { .name = "ti_sci", .id = UCLASS_FIRMWARE, .of_match = ti_sci_ids, .probe = ti_sci_probe, .priv_auto = sizeof(struct ti_sci_info), }; #if IS_ENABLED(CONFIG_K3_DM_FW) U_BOOT_DRIVER(ti_sci_dm) = { .name = "ti_sci_dm", .id = UCLASS_FIRMWARE, .of_match = ti_sci_dm_ids, .probe = ti_sci_dm_probe, .priv_auto = sizeof(struct ti_sci_info), }; #endif