1 // SPDX-License-Identifier: GPL-2.0+
3 * Texas Instruments System Control Interface Protocol Driver
4 * Based on drivers/firmware/ti_sci.c from Linux.
6 * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
7 * Lokesh Vutla <lokeshvutla@ti.com>
14 #include <dm/device.h>
15 #include <linux/err.h>
16 #include <linux/soc/ti/k3-sec-proxy.h>
17 #include <linux/soc/ti/ti_sci_protocol.h>
21 /* List of all TI SCI devices active in system */
22 static LIST_HEAD(ti_sci_list);
25 * struct ti_sci_xfer - Structure representing a message flow
26 * @tx_message: Transmit message
27 * @rx_len: Receive message length
30 struct k3_sec_proxy_msg tx_message;
35 * struct ti_sci_desc - Description of SoC integration
36 * @host_id: Host identifier representing the compute entity
37 * @max_rx_timeout_us: Timeout for communication with SoC (in Microseconds)
38 * @max_msg_size: Maximum size of data per message that can be handled.
42 int max_rx_timeout_us;
47 * struct ti_sci_info - Structure representing a TI SCI instance
48 * @dev: Device pointer
49 * @desc: SoC description for this instance
50 * @handle: Instance of TI SCI handle to send to clients.
51 * @chan_tx: Transmit mailbox channel
52 * @chan_rx: Receive mailbox channel
55 * @is_secure: Determines if the communication is through secure threads.
56 * @host_id: Host identifier representing the compute entity
57 * @seq: Seq id used for verification for tx and rx message.
61 const struct ti_sci_desc *desc;
62 struct ti_sci_handle handle;
63 struct mbox_chan chan_tx;
64 struct mbox_chan chan_rx;
65 struct mbox_chan chan_notify;
66 struct ti_sci_xfer xfer;
67 struct list_head list;
73 #define handle_to_ti_sci_info(h) container_of(h, struct ti_sci_info, handle)
76 * ti_sci_setup_one_xfer() - Setup one message type
77 * @info: Pointer to SCI entity information
78 * @msg_type: Message type
79 * @msg_flags: Flag to set for the message
80 * @buf: Buffer to be send to mailbox channel
81 * @tx_message_size: transmit message size
82 * @rx_message_size: receive message size
84 * Helper function which is used by various command functions that are
85 * exposed to clients of this driver for allocating a message traffic event.
87 * Return: Corresponding ti_sci_xfer pointer if all went fine,
88 * else appropriate error pointer.
90 static struct ti_sci_xfer *ti_sci_setup_one_xfer(struct ti_sci_info *info,
91 u16 msg_type, u32 msg_flags,
93 size_t tx_message_size,
94 size_t rx_message_size)
96 struct ti_sci_xfer *xfer = &info->xfer;
97 struct ti_sci_msg_hdr *hdr;
99 /* Ensure we have sane transfer sizes */
100 if (rx_message_size > info->desc->max_msg_size ||
101 tx_message_size > info->desc->max_msg_size ||
102 rx_message_size < sizeof(*hdr) || tx_message_size < sizeof(*hdr))
103 return ERR_PTR(-ERANGE);
105 info->seq = ~info->seq;
106 xfer->tx_message.buf = buf;
107 xfer->tx_message.len = tx_message_size;
108 xfer->rx_len = (u8)rx_message_size;
110 hdr = (struct ti_sci_msg_hdr *)buf;
111 hdr->seq = info->seq;
112 hdr->type = msg_type;
113 hdr->host = info->host_id;
114 hdr->flags = msg_flags;
120 * ti_sci_get_response() - Receive response from mailbox channel
121 * @info: Pointer to SCI entity information
122 * @xfer: Transfer to initiate and wait for response
123 * @chan: Channel to receive the response
125 * Return: -ETIMEDOUT in case of no response, if transmit error,
126 * return corresponding error, else if all goes well,
129 static inline int ti_sci_get_response(struct ti_sci_info *info,
130 struct ti_sci_xfer *xfer,
131 struct mbox_chan *chan)
133 struct k3_sec_proxy_msg *msg = &xfer->tx_message;
134 struct ti_sci_secure_msg_hdr *secure_hdr;
135 struct ti_sci_msg_hdr *hdr;
138 /* Receive the response */
139 ret = mbox_recv(chan, msg, info->desc->max_rx_timeout_us);
141 dev_err(info->dev, "%s: Message receive failed. ret = %d\n",
146 /* ToDo: Verify checksum */
147 if (info->is_secure) {
148 secure_hdr = (struct ti_sci_secure_msg_hdr *)msg->buf;
149 msg->buf = (u32 *)((void *)msg->buf + sizeof(*secure_hdr));
152 /* msg is updated by mailbox driver */
153 hdr = (struct ti_sci_msg_hdr *)msg->buf;
155 /* Sanity check for message response */
156 if (hdr->seq != info->seq) {
157 dev_dbg(info->dev, "%s: Message for %d is not expected\n",
162 if (msg->len > info->desc->max_msg_size) {
163 dev_err(info->dev, "%s: Unable to handle %zu xfer (max %d)\n",
164 __func__, msg->len, info->desc->max_msg_size);
168 if (msg->len < xfer->rx_len) {
169 dev_err(info->dev, "%s: Recv xfer %zu < expected %d length\n",
170 __func__, msg->len, xfer->rx_len);
177 * ti_sci_do_xfer() - Do one transfer
178 * @info: Pointer to SCI entity information
179 * @xfer: Transfer to initiate and wait for response
181 * Return: 0 if all went fine, else return appropriate error.
183 static inline int ti_sci_do_xfer(struct ti_sci_info *info,
184 struct ti_sci_xfer *xfer)
186 struct k3_sec_proxy_msg *msg = &xfer->tx_message;
187 u8 secure_buf[info->desc->max_msg_size];
188 struct ti_sci_secure_msg_hdr secure_hdr;
191 if (info->is_secure) {
192 /* ToDo: get checksum of the entire message */
193 secure_hdr.checksum = 0;
194 secure_hdr.reserved = 0;
195 memcpy(&secure_buf[sizeof(secure_hdr)], xfer->tx_message.buf,
196 xfer->tx_message.len);
198 xfer->tx_message.buf = (u32 *)secure_buf;
199 xfer->tx_message.len += sizeof(secure_hdr);
200 xfer->rx_len += sizeof(secure_hdr);
203 /* Send the message */
204 ret = mbox_send(&info->chan_tx, msg);
206 dev_err(info->dev, "%s: Message sending failed. ret = %d\n",
211 return ti_sci_get_response(info, xfer, &info->chan_rx);
215 * ti_sci_cmd_get_revision() - command to get the revision of the SCI entity
216 * @handle: pointer to TI SCI handle
218 * Updates the SCI information in the internal data structure.
220 * Return: 0 if all went fine, else return appropriate error.
222 static int ti_sci_cmd_get_revision(struct ti_sci_handle *handle)
224 struct ti_sci_msg_resp_version *rev_info;
225 struct ti_sci_version_info *ver;
226 struct ti_sci_msg_hdr hdr;
227 struct ti_sci_info *info;
228 struct ti_sci_xfer *xfer;
232 return PTR_ERR(handle);
236 info = handle_to_ti_sci_info(handle);
238 xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_VERSION, 0x0,
239 (u32 *)&hdr, sizeof(struct ti_sci_msg_hdr),
243 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
247 ret = ti_sci_do_xfer(info, xfer);
249 dev_err(info->dev, "Mbox communication fail %d\n", ret);
253 rev_info = (struct ti_sci_msg_resp_version *)xfer->tx_message.buf;
255 ver = &handle->version;
256 ver->abi_major = rev_info->abi_major;
257 ver->abi_minor = rev_info->abi_minor;
258 ver->firmware_revision = rev_info->firmware_revision;
259 strncpy(ver->firmware_description, rev_info->firmware_description,
260 sizeof(ver->firmware_description));
266 * ti_sci_is_response_ack() - Generic ACK/NACK message checkup
267 * @r: pointer to response buffer
269 * Return: true if the response was an ACK, else returns false.
271 static inline bool ti_sci_is_response_ack(void *r)
273 struct ti_sci_msg_hdr *hdr = r;
275 return hdr->flags & TI_SCI_FLAG_RESP_GENERIC_ACK ? true : false;
279 * cmd_set_board_config_using_msg() - Common command to send board configuration
281 * @handle: pointer to TI SCI handle
282 * @msg_type: One of the TISCI message types to set board configuration
283 * @addr: Address where the board config structure is located
284 * @size: Size of the board config structure
286 * Return: 0 if all went well, else returns appropriate error value.
288 static int cmd_set_board_config_using_msg(const struct ti_sci_handle *handle,
289 u16 msg_type, u64 addr, u32 size)
291 struct ti_sci_msg_board_config req;
292 struct ti_sci_msg_hdr *resp;
293 struct ti_sci_info *info;
294 struct ti_sci_xfer *xfer;
298 return PTR_ERR(handle);
302 info = handle_to_ti_sci_info(handle);
304 xfer = ti_sci_setup_one_xfer(info, msg_type,
305 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
306 (u32 *)&req, sizeof(req), sizeof(*resp));
309 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
312 req.boardcfgp_high = (addr >> 32) & 0xffffffff;
313 req.boardcfgp_low = addr & 0xffffffff;
314 req.boardcfg_size = size;
316 ret = ti_sci_do_xfer(info, xfer);
318 dev_err(info->dev, "Mbox send fail %d\n", ret);
322 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
324 if (!ti_sci_is_response_ack(resp))
331 * ti_sci_cmd_set_board_config() - Command to send board configuration message
332 * @handle: pointer to TI SCI handle
333 * @addr: Address where the board config structure is located
334 * @size: Size of the board config structure
336 * Return: 0 if all went well, else returns appropriate error value.
338 static int ti_sci_cmd_set_board_config(const struct ti_sci_handle *handle,
341 return cmd_set_board_config_using_msg(handle,
342 TI_SCI_MSG_BOARD_CONFIG,
347 * ti_sci_cmd_set_board_config_rm() - Command to send board resource
348 * management configuration
349 * @handle: pointer to TI SCI handle
350 * @addr: Address where the board RM config structure is located
351 * @size: Size of the RM config structure
353 * Return: 0 if all went well, else returns appropriate error value.
356 int ti_sci_cmd_set_board_config_rm(const struct ti_sci_handle *handle,
359 return cmd_set_board_config_using_msg(handle,
360 TI_SCI_MSG_BOARD_CONFIG_RM,
365 * ti_sci_cmd_set_board_config_security() - Command to send board security
366 * configuration message
367 * @handle: pointer to TI SCI handle
368 * @addr: Address where the board security config structure is located
369 * @size: Size of the security config structure
371 * Return: 0 if all went well, else returns appropriate error value.
374 int ti_sci_cmd_set_board_config_security(const struct ti_sci_handle *handle,
377 return cmd_set_board_config_using_msg(handle,
378 TI_SCI_MSG_BOARD_CONFIG_SECURITY,
383 * ti_sci_cmd_set_board_config_pm() - Command to send board power and clock
384 * configuration message
385 * @handle: pointer to TI SCI handle
386 * @addr: Address where the board PM config structure is located
387 * @size: Size of the PM config structure
389 * Return: 0 if all went well, else returns appropriate error value.
391 static int ti_sci_cmd_set_board_config_pm(const struct ti_sci_handle *handle,
394 return cmd_set_board_config_using_msg(handle,
395 TI_SCI_MSG_BOARD_CONFIG_PM,
400 * ti_sci_set_device_state() - Set device state helper
401 * @handle: pointer to TI SCI handle
402 * @id: Device identifier
403 * @flags: flags to setup for the device
404 * @state: State to move the device to
406 * Return: 0 if all went well, else returns appropriate error value.
408 static int ti_sci_set_device_state(const struct ti_sci_handle *handle,
409 u32 id, u32 flags, u8 state)
411 struct ti_sci_msg_req_set_device_state req;
412 struct ti_sci_msg_hdr *resp;
413 struct ti_sci_info *info;
414 struct ti_sci_xfer *xfer;
418 return PTR_ERR(handle);
422 info = handle_to_ti_sci_info(handle);
424 xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_DEVICE_STATE,
425 flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
426 (u32 *)&req, sizeof(req), sizeof(*resp));
429 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
435 ret = ti_sci_do_xfer(info, xfer);
437 dev_err(info->dev, "Mbox send fail %d\n", ret);
441 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
443 if (!ti_sci_is_response_ack(resp))
450 * ti_sci_get_device_state() - Get device state helper
451 * @handle: Handle to the device
452 * @id: Device Identifier
453 * @clcnt: Pointer to Context Loss Count
454 * @resets: pointer to resets
455 * @p_state: pointer to p_state
456 * @c_state: pointer to c_state
458 * Return: 0 if all went fine, else return appropriate error.
460 static int ti_sci_get_device_state(const struct ti_sci_handle *handle,
461 u32 id, u32 *clcnt, u32 *resets,
462 u8 *p_state, u8 *c_state)
464 struct ti_sci_msg_resp_get_device_state *resp;
465 struct ti_sci_msg_req_get_device_state req;
466 struct ti_sci_info *info;
467 struct ti_sci_xfer *xfer;
471 return PTR_ERR(handle);
475 if (!clcnt && !resets && !p_state && !c_state)
478 info = handle_to_ti_sci_info(handle);
480 /* Response is expected, so need of any flags */
481 xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_DEVICE_STATE, 0,
482 (u32 *)&req, sizeof(req), sizeof(*resp));
485 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
490 ret = ti_sci_do_xfer(info, xfer);
492 dev_err(dev, "Mbox send fail %d\n", ret);
496 resp = (struct ti_sci_msg_resp_get_device_state *)xfer->tx_message.buf;
497 if (!ti_sci_is_response_ack(resp))
501 *clcnt = resp->context_loss_count;
503 *resets = resp->resets;
505 *p_state = resp->programmed_state;
507 *c_state = resp->current_state;
513 * ti_sci_cmd_get_device() - command to request for device managed by TISCI
514 * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle
515 * @id: Device Identifier
517 * Request for the device - NOTE: the client MUST maintain integrity of
518 * usage count by balancing get_device with put_device. No refcounting is
519 * managed by driver for that purpose.
521 * NOTE: The request is for exclusive access for the processor.
523 * Return: 0 if all went fine, else return appropriate error.
525 static int ti_sci_cmd_get_device(const struct ti_sci_handle *handle, u32 id)
527 return ti_sci_set_device_state(handle, id,
528 MSG_FLAG_DEVICE_EXCLUSIVE,
529 MSG_DEVICE_SW_STATE_ON);
533 * ti_sci_cmd_idle_device() - Command to idle a device managed by TISCI
534 * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle
535 * @id: Device Identifier
537 * Request for the device - NOTE: the client MUST maintain integrity of
538 * usage count by balancing get_device with put_device. No refcounting is
539 * managed by driver for that purpose.
541 * Return: 0 if all went fine, else return appropriate error.
543 static int ti_sci_cmd_idle_device(const struct ti_sci_handle *handle, u32 id)
545 return ti_sci_set_device_state(handle, id,
546 MSG_FLAG_DEVICE_EXCLUSIVE,
547 MSG_DEVICE_SW_STATE_RETENTION);
551 * ti_sci_cmd_put_device() - command to release a device managed by TISCI
552 * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle
553 * @id: Device Identifier
555 * Request for the device - NOTE: the client MUST maintain integrity of
556 * usage count by balancing get_device with put_device. No refcounting is
557 * managed by driver for that purpose.
559 * Return: 0 if all went fine, else return appropriate error.
561 static int ti_sci_cmd_put_device(const struct ti_sci_handle *handle, u32 id)
563 return ti_sci_set_device_state(handle, id,
564 0, MSG_DEVICE_SW_STATE_AUTO_OFF);
568 * ti_sci_cmd_dev_is_valid() - Is the device valid
569 * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle
570 * @id: Device Identifier
572 * Return: 0 if all went fine and the device ID is valid, else return
575 static int ti_sci_cmd_dev_is_valid(const struct ti_sci_handle *handle, u32 id)
579 /* check the device state which will also tell us if the ID is valid */
580 return ti_sci_get_device_state(handle, id, NULL, NULL, NULL, &unused);
584 * ti_sci_cmd_dev_get_clcnt() - Get context loss counter
585 * @handle: Pointer to TISCI handle
586 * @id: Device Identifier
587 * @count: Pointer to Context Loss counter to populate
589 * Return: 0 if all went fine, else return appropriate error.
591 static int ti_sci_cmd_dev_get_clcnt(const struct ti_sci_handle *handle, u32 id,
594 return ti_sci_get_device_state(handle, id, count, NULL, NULL, NULL);
598 * ti_sci_cmd_dev_is_idle() - Check if the device is requested to be idle
599 * @handle: Pointer to TISCI handle
600 * @id: Device Identifier
601 * @r_state: true if requested to be idle
603 * Return: 0 if all went fine, else return appropriate error.
605 static int ti_sci_cmd_dev_is_idle(const struct ti_sci_handle *handle, u32 id,
614 ret = ti_sci_get_device_state(handle, id, NULL, NULL, &state, NULL);
618 *r_state = (state == MSG_DEVICE_SW_STATE_RETENTION);
624 * ti_sci_cmd_dev_is_stop() - Check if the device is requested to be stopped
625 * @handle: Pointer to TISCI handle
626 * @id: Device Identifier
627 * @r_state: true if requested to be stopped
628 * @curr_state: true if currently stopped.
630 * Return: 0 if all went fine, else return appropriate error.
632 static int ti_sci_cmd_dev_is_stop(const struct ti_sci_handle *handle, u32 id,
633 bool *r_state, bool *curr_state)
638 if (!r_state && !curr_state)
642 ti_sci_get_device_state(handle, id, NULL, NULL, &p_state, &c_state);
647 *r_state = (p_state == MSG_DEVICE_SW_STATE_AUTO_OFF);
649 *curr_state = (c_state == MSG_DEVICE_HW_STATE_OFF);
655 * ti_sci_cmd_dev_is_on() - Check if the device is requested to be ON
656 * @handle: Pointer to TISCI handle
657 * @id: Device Identifier
658 * @r_state: true if requested to be ON
659 * @curr_state: true if currently ON and active
661 * Return: 0 if all went fine, else return appropriate error.
663 static int ti_sci_cmd_dev_is_on(const struct ti_sci_handle *handle, u32 id,
664 bool *r_state, bool *curr_state)
669 if (!r_state && !curr_state)
673 ti_sci_get_device_state(handle, id, NULL, NULL, &p_state, &c_state);
678 *r_state = (p_state == MSG_DEVICE_SW_STATE_ON);
680 *curr_state = (c_state == MSG_DEVICE_HW_STATE_ON);
686 * ti_sci_cmd_dev_is_trans() - Check if the device is currently transitioning
687 * @handle: Pointer to TISCI handle
688 * @id: Device Identifier
689 * @curr_state: true if currently transitioning.
691 * Return: 0 if all went fine, else return appropriate error.
693 static int ti_sci_cmd_dev_is_trans(const struct ti_sci_handle *handle, u32 id,
702 ret = ti_sci_get_device_state(handle, id, NULL, NULL, NULL, &state);
706 *curr_state = (state == MSG_DEVICE_HW_STATE_TRANS);
712 * ti_sci_cmd_set_device_resets() - command to set resets for device managed
714 * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle
715 * @id: Device Identifier
716 * @reset_state: Device specific reset bit field
718 * Return: 0 if all went fine, else return appropriate error.
720 static int ti_sci_cmd_set_device_resets(const struct ti_sci_handle *handle,
721 u32 id, u32 reset_state)
723 struct ti_sci_msg_req_set_device_resets req;
724 struct ti_sci_msg_hdr *resp;
725 struct ti_sci_info *info;
726 struct ti_sci_xfer *xfer;
730 return PTR_ERR(handle);
734 info = handle_to_ti_sci_info(handle);
736 xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_DEVICE_RESETS,
737 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
738 (u32 *)&req, sizeof(req), sizeof(*resp));
741 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
745 req.resets = reset_state;
747 ret = ti_sci_do_xfer(info, xfer);
749 dev_err(info->dev, "Mbox send fail %d\n", ret);
753 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
755 if (!ti_sci_is_response_ack(resp))
762 * ti_sci_cmd_get_device_resets() - Get reset state for device managed
764 * @handle: Pointer to TISCI handle
765 * @id: Device Identifier
766 * @reset_state: Pointer to reset state to populate
768 * Return: 0 if all went fine, else return appropriate error.
770 static int ti_sci_cmd_get_device_resets(const struct ti_sci_handle *handle,
771 u32 id, u32 *reset_state)
773 return ti_sci_get_device_state(handle, id, NULL, reset_state, NULL,
778 * ti_sci_set_clock_state() - Set clock state helper
779 * @handle: pointer to TI SCI handle
780 * @dev_id: Device identifier this request is for
781 * @clk_id: Clock identifier for the device for this request.
782 * Each device has it's own set of clock inputs. This indexes
783 * which clock input to modify.
784 * @flags: Header flags as needed
785 * @state: State to request for the clock.
787 * Return: 0 if all went well, else returns appropriate error value.
789 static int ti_sci_set_clock_state(const struct ti_sci_handle *handle,
790 u32 dev_id, u8 clk_id,
793 struct ti_sci_msg_req_set_clock_state req;
794 struct ti_sci_msg_hdr *resp;
795 struct ti_sci_info *info;
796 struct ti_sci_xfer *xfer;
800 return PTR_ERR(handle);
804 info = handle_to_ti_sci_info(handle);
806 xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_CLOCK_STATE,
807 flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
808 (u32 *)&req, sizeof(req), sizeof(*resp));
811 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
816 req.request_state = state;
818 ret = ti_sci_do_xfer(info, xfer);
820 dev_err(info->dev, "Mbox send fail %d\n", ret);
824 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
826 if (!ti_sci_is_response_ack(resp))
833 * ti_sci_cmd_get_clock_state() - Get clock state helper
834 * @handle: pointer to TI SCI handle
835 * @dev_id: Device identifier this request is for
836 * @clk_id: Clock identifier for the device for this request.
837 * Each device has it's own set of clock inputs. This indexes
838 * which clock input to modify.
839 * @programmed_state: State requested for clock to move to
840 * @current_state: State that the clock is currently in
842 * Return: 0 if all went well, else returns appropriate error value.
844 static int ti_sci_cmd_get_clock_state(const struct ti_sci_handle *handle,
845 u32 dev_id, u8 clk_id,
846 u8 *programmed_state, u8 *current_state)
848 struct ti_sci_msg_resp_get_clock_state *resp;
849 struct ti_sci_msg_req_get_clock_state req;
850 struct ti_sci_info *info;
851 struct ti_sci_xfer *xfer;
855 return PTR_ERR(handle);
859 if (!programmed_state && !current_state)
862 info = handle_to_ti_sci_info(handle);
864 xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_CLOCK_STATE,
865 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
866 (u32 *)&req, sizeof(req), sizeof(*resp));
869 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
875 ret = ti_sci_do_xfer(info, xfer);
877 dev_err(info->dev, "Mbox send fail %d\n", ret);
881 resp = (struct ti_sci_msg_resp_get_clock_state *)xfer->tx_message.buf;
883 if (!ti_sci_is_response_ack(resp))
886 if (programmed_state)
887 *programmed_state = resp->programmed_state;
889 *current_state = resp->current_state;
895 * ti_sci_cmd_get_clock() - Get control of a clock from TI SCI
896 * @handle: pointer to TI SCI handle
897 * @dev_id: Device identifier this request is for
898 * @clk_id: Clock identifier for the device for this request.
899 * Each device has it's own set of clock inputs. This indexes
900 * which clock input to modify.
901 * @needs_ssc: 'true' if Spread Spectrum clock is desired, else 'false'
902 * @can_change_freq: 'true' if frequency change is desired, else 'false'
903 * @enable_input_term: 'true' if input termination is desired, else 'false'
905 * Return: 0 if all went well, else returns appropriate error value.
907 static int ti_sci_cmd_get_clock(const struct ti_sci_handle *handle, u32 dev_id,
908 u8 clk_id, bool needs_ssc, bool can_change_freq,
909 bool enable_input_term)
913 flags |= needs_ssc ? MSG_FLAG_CLOCK_ALLOW_SSC : 0;
914 flags |= can_change_freq ? MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE : 0;
915 flags |= enable_input_term ? MSG_FLAG_CLOCK_INPUT_TERM : 0;
917 return ti_sci_set_clock_state(handle, dev_id, clk_id, flags,
918 MSG_CLOCK_SW_STATE_REQ);
922 * ti_sci_cmd_idle_clock() - Idle a clock which is in our control
923 * @handle: pointer to TI SCI handle
924 * @dev_id: Device identifier this request is for
925 * @clk_id: Clock identifier for the device for this request.
926 * Each device has it's own set of clock inputs. This indexes
927 * which clock input to modify.
929 * NOTE: This clock must have been requested by get_clock previously.
931 * Return: 0 if all went well, else returns appropriate error value.
933 static int ti_sci_cmd_idle_clock(const struct ti_sci_handle *handle,
934 u32 dev_id, u8 clk_id)
936 return ti_sci_set_clock_state(handle, dev_id, clk_id, 0,
937 MSG_CLOCK_SW_STATE_UNREQ);
941 * ti_sci_cmd_put_clock() - Release a clock from our control back to TISCI
942 * @handle: pointer to TI SCI handle
943 * @dev_id: Device identifier this request is for
944 * @clk_id: Clock identifier for the device for this request.
945 * Each device has it's own set of clock inputs. This indexes
946 * which clock input to modify.
948 * NOTE: This clock must have been requested by get_clock previously.
950 * Return: 0 if all went well, else returns appropriate error value.
952 static int ti_sci_cmd_put_clock(const struct ti_sci_handle *handle,
953 u32 dev_id, u8 clk_id)
955 return ti_sci_set_clock_state(handle, dev_id, clk_id, 0,
956 MSG_CLOCK_SW_STATE_AUTO);
960 * ti_sci_cmd_clk_is_auto() - Is the clock being auto managed
961 * @handle: pointer to TI SCI handle
962 * @dev_id: Device identifier this request is for
963 * @clk_id: Clock identifier for the device for this request.
964 * Each device has it's own set of clock inputs. This indexes
965 * which clock input to modify.
966 * @req_state: state indicating if the clock is auto managed
968 * Return: 0 if all went well, else returns appropriate error value.
970 static int ti_sci_cmd_clk_is_auto(const struct ti_sci_handle *handle,
971 u32 dev_id, u8 clk_id, bool *req_state)
979 ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id, &state, NULL);
983 *req_state = (state == MSG_CLOCK_SW_STATE_AUTO);
988 * ti_sci_cmd_clk_is_on() - Is the clock ON
989 * @handle: pointer to TI SCI handle
990 * @dev_id: Device identifier this request is for
991 * @clk_id: Clock identifier for the device for this request.
992 * Each device has it's own set of clock inputs. This indexes
993 * which clock input to modify.
994 * @req_state: state indicating if the clock is managed by us and enabled
995 * @curr_state: state indicating if the clock is ready for operation
997 * Return: 0 if all went well, else returns appropriate error value.
999 static int ti_sci_cmd_clk_is_on(const struct ti_sci_handle *handle, u32 dev_id,
1000 u8 clk_id, bool *req_state, bool *curr_state)
1002 u8 c_state = 0, r_state = 0;
1005 if (!req_state && !curr_state)
1008 ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id,
1009 &r_state, &c_state);
1014 *req_state = (r_state == MSG_CLOCK_SW_STATE_REQ);
1016 *curr_state = (c_state == MSG_CLOCK_HW_STATE_READY);
1021 * ti_sci_cmd_clk_is_off() - Is the clock OFF
1022 * @handle: pointer to TI SCI handle
1023 * @dev_id: Device identifier this request is for
1024 * @clk_id: Clock identifier for the device for this request.
1025 * Each device has it's own set of clock inputs. This indexes
1026 * which clock input to modify.
1027 * @req_state: state indicating if the clock is managed by us and disabled
1028 * @curr_state: state indicating if the clock is NOT ready for operation
1030 * Return: 0 if all went well, else returns appropriate error value.
1032 static int ti_sci_cmd_clk_is_off(const struct ti_sci_handle *handle, u32 dev_id,
1033 u8 clk_id, bool *req_state, bool *curr_state)
1035 u8 c_state = 0, r_state = 0;
1038 if (!req_state && !curr_state)
1041 ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id,
1042 &r_state, &c_state);
1047 *req_state = (r_state == MSG_CLOCK_SW_STATE_UNREQ);
1049 *curr_state = (c_state == MSG_CLOCK_HW_STATE_NOT_READY);
1054 * ti_sci_cmd_clk_set_parent() - Set the clock source of a specific device clock
1055 * @handle: pointer to TI SCI handle
1056 * @dev_id: Device identifier this request is for
1057 * @clk_id: Clock identifier for the device for this request.
1058 * Each device has it's own set of clock inputs. This indexes
1059 * which clock input to modify.
1060 * @parent_id: Parent clock identifier to set
1062 * Return: 0 if all went well, else returns appropriate error value.
1064 static int ti_sci_cmd_clk_set_parent(const struct ti_sci_handle *handle,
1065 u32 dev_id, u8 clk_id, u8 parent_id)
1067 struct ti_sci_msg_req_set_clock_parent req;
1068 struct ti_sci_msg_hdr *resp;
1069 struct ti_sci_info *info;
1070 struct ti_sci_xfer *xfer;
1074 return PTR_ERR(handle);
1078 info = handle_to_ti_sci_info(handle);
1080 xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_CLOCK_PARENT,
1081 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1082 (u32 *)&req, sizeof(req), sizeof(*resp));
1084 ret = PTR_ERR(xfer);
1085 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
1088 req.dev_id = dev_id;
1089 req.clk_id = clk_id;
1090 req.parent_id = parent_id;
1092 ret = ti_sci_do_xfer(info, xfer);
1094 dev_err(info->dev, "Mbox send fail %d\n", ret);
1098 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
1100 if (!ti_sci_is_response_ack(resp))
1107 * ti_sci_cmd_clk_get_parent() - Get current parent clock source
1108 * @handle: pointer to TI SCI handle
1109 * @dev_id: Device identifier this request is for
1110 * @clk_id: Clock identifier for the device for this request.
1111 * Each device has it's own set of clock inputs. This indexes
1112 * which clock input to modify.
1113 * @parent_id: Current clock parent
1115 * Return: 0 if all went well, else returns appropriate error value.
1117 static int ti_sci_cmd_clk_get_parent(const struct ti_sci_handle *handle,
1118 u32 dev_id, u8 clk_id, u8 *parent_id)
1120 struct ti_sci_msg_resp_get_clock_parent *resp;
1121 struct ti_sci_msg_req_get_clock_parent req;
1122 struct ti_sci_info *info;
1123 struct ti_sci_xfer *xfer;
1127 return PTR_ERR(handle);
1128 if (!handle || !parent_id)
1131 info = handle_to_ti_sci_info(handle);
1133 xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_CLOCK_PARENT,
1134 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1135 (u32 *)&req, sizeof(req), sizeof(*resp));
1137 ret = PTR_ERR(xfer);
1138 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
1141 req.dev_id = dev_id;
1142 req.clk_id = clk_id;
1144 ret = ti_sci_do_xfer(info, xfer);
1146 dev_err(info->dev, "Mbox send fail %d\n", ret);
1150 resp = (struct ti_sci_msg_resp_get_clock_parent *)xfer->tx_message.buf;
1152 if (!ti_sci_is_response_ack(resp))
1155 *parent_id = resp->parent_id;
1161 * ti_sci_cmd_clk_get_num_parents() - Get num parents of the current clk source
1162 * @handle: pointer to TI SCI handle
1163 * @dev_id: Device identifier this request is for
1164 * @clk_id: Clock identifier for the device for this request.
1165 * Each device has it's own set of clock inputs. This indexes
1166 * which clock input to modify.
1167 * @num_parents: Returns he number of parents to the current clock.
1169 * Return: 0 if all went well, else returns appropriate error value.
1171 static int ti_sci_cmd_clk_get_num_parents(const struct ti_sci_handle *handle,
1172 u32 dev_id, u8 clk_id,
1175 struct ti_sci_msg_resp_get_clock_num_parents *resp;
1176 struct ti_sci_msg_req_get_clock_num_parents req;
1177 struct ti_sci_info *info;
1178 struct ti_sci_xfer *xfer;
1182 return PTR_ERR(handle);
1183 if (!handle || !num_parents)
1186 info = handle_to_ti_sci_info(handle);
1188 xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_NUM_CLOCK_PARENTS,
1189 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1190 (u32 *)&req, sizeof(req), sizeof(*resp));
1192 ret = PTR_ERR(xfer);
1193 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
1196 req.dev_id = dev_id;
1197 req.clk_id = clk_id;
1199 ret = ti_sci_do_xfer(info, xfer);
1201 dev_err(info->dev, "Mbox send fail %d\n", ret);
1205 resp = (struct ti_sci_msg_resp_get_clock_num_parents *)
1206 xfer->tx_message.buf;
1208 if (!ti_sci_is_response_ack(resp))
1211 *num_parents = resp->num_parents;
1217 * ti_sci_cmd_clk_get_match_freq() - Find a good match for frequency
1218 * @handle: pointer to TI SCI handle
1219 * @dev_id: Device identifier this request is for
1220 * @clk_id: Clock identifier for the device for this request.
1221 * Each device has it's own set of clock inputs. This indexes
1222 * which clock input to modify.
1223 * @min_freq: The minimum allowable frequency in Hz. This is the minimum
1224 * allowable programmed frequency and does not account for clock
1225 * tolerances and jitter.
1226 * @target_freq: The target clock frequency in Hz. A frequency will be
1227 * processed as close to this target frequency as possible.
1228 * @max_freq: The maximum allowable frequency in Hz. This is the maximum
1229 * allowable programmed frequency and does not account for clock
1230 * tolerances and jitter.
1231 * @match_freq: Frequency match in Hz response.
1233 * Return: 0 if all went well, else returns appropriate error value.
1235 static int ti_sci_cmd_clk_get_match_freq(const struct ti_sci_handle *handle,
1236 u32 dev_id, u8 clk_id, u64 min_freq,
1237 u64 target_freq, u64 max_freq,
1240 struct ti_sci_msg_resp_query_clock_freq *resp;
1241 struct ti_sci_msg_req_query_clock_freq req;
1242 struct ti_sci_info *info;
1243 struct ti_sci_xfer *xfer;
1247 return PTR_ERR(handle);
1248 if (!handle || !match_freq)
1251 info = handle_to_ti_sci_info(handle);
1253 xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_QUERY_CLOCK_FREQ,
1254 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1255 (u32 *)&req, sizeof(req), sizeof(*resp));
1257 ret = PTR_ERR(xfer);
1258 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
1261 req.dev_id = dev_id;
1262 req.clk_id = clk_id;
1263 req.min_freq_hz = min_freq;
1264 req.target_freq_hz = target_freq;
1265 req.max_freq_hz = max_freq;
1267 ret = ti_sci_do_xfer(info, xfer);
1269 dev_err(info->dev, "Mbox send fail %d\n", ret);
1273 resp = (struct ti_sci_msg_resp_query_clock_freq *)xfer->tx_message.buf;
1275 if (!ti_sci_is_response_ack(resp))
1278 *match_freq = resp->freq_hz;
1284 * ti_sci_cmd_clk_set_freq() - Set a frequency for clock
1285 * @handle: pointer to TI SCI handle
1286 * @dev_id: Device identifier this request is for
1287 * @clk_id: Clock identifier for the device for this request.
1288 * Each device has it's own set of clock inputs. This indexes
1289 * which clock input to modify.
1290 * @min_freq: The minimum allowable frequency in Hz. This is the minimum
1291 * allowable programmed frequency and does not account for clock
1292 * tolerances and jitter.
1293 * @target_freq: The target clock frequency in Hz. A frequency will be
1294 * processed as close to this target frequency as possible.
1295 * @max_freq: The maximum allowable frequency in Hz. This is the maximum
1296 * allowable programmed frequency and does not account for clock
1297 * tolerances and jitter.
1299 * Return: 0 if all went well, else returns appropriate error value.
1301 static int ti_sci_cmd_clk_set_freq(const struct ti_sci_handle *handle,
1302 u32 dev_id, u8 clk_id, u64 min_freq,
1303 u64 target_freq, u64 max_freq)
1305 struct ti_sci_msg_req_set_clock_freq req;
1306 struct ti_sci_msg_hdr *resp;
1307 struct ti_sci_info *info;
1308 struct ti_sci_xfer *xfer;
1312 return PTR_ERR(handle);
1316 info = handle_to_ti_sci_info(handle);
1318 xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_CLOCK_FREQ,
1319 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1320 (u32 *)&req, sizeof(req), sizeof(*resp));
1322 ret = PTR_ERR(xfer);
1323 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
1326 req.dev_id = dev_id;
1327 req.clk_id = clk_id;
1328 req.min_freq_hz = min_freq;
1329 req.target_freq_hz = target_freq;
1330 req.max_freq_hz = max_freq;
1332 ret = ti_sci_do_xfer(info, xfer);
1334 dev_err(info->dev, "Mbox send fail %d\n", ret);
1338 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
1340 if (!ti_sci_is_response_ack(resp))
1347 * ti_sci_cmd_clk_get_freq() - Get current frequency
1348 * @handle: pointer to TI SCI handle
1349 * @dev_id: Device identifier this request is for
1350 * @clk_id: Clock identifier for the device for this request.
1351 * Each device has it's own set of clock inputs. This indexes
1352 * which clock input to modify.
1353 * @freq: Currently frequency in Hz
1355 * Return: 0 if all went well, else returns appropriate error value.
1357 static int ti_sci_cmd_clk_get_freq(const struct ti_sci_handle *handle,
1358 u32 dev_id, u8 clk_id, u64 *freq)
1360 struct ti_sci_msg_resp_get_clock_freq *resp;
1361 struct ti_sci_msg_req_get_clock_freq req;
1362 struct ti_sci_info *info;
1363 struct ti_sci_xfer *xfer;
1367 return PTR_ERR(handle);
1368 if (!handle || !freq)
1371 info = handle_to_ti_sci_info(handle);
1373 xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_CLOCK_FREQ,
1374 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1375 (u32 *)&req, sizeof(req), sizeof(*resp));
1377 ret = PTR_ERR(xfer);
1378 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
1381 req.dev_id = dev_id;
1382 req.clk_id = clk_id;
1384 ret = ti_sci_do_xfer(info, xfer);
1386 dev_err(info->dev, "Mbox send fail %d\n", ret);
1390 resp = (struct ti_sci_msg_resp_get_clock_freq *)xfer->tx_message.buf;
1392 if (!ti_sci_is_response_ack(resp))
1395 *freq = resp->freq_hz;
1401 * ti_sci_cmd_core_reboot() - Command to request system reset
1402 * @handle: pointer to TI SCI handle
1404 * Return: 0 if all went well, else returns appropriate error value.
1406 static int ti_sci_cmd_core_reboot(const struct ti_sci_handle *handle)
1408 struct ti_sci_msg_req_reboot req;
1409 struct ti_sci_msg_hdr *resp;
1410 struct ti_sci_info *info;
1411 struct ti_sci_xfer *xfer;
1415 return PTR_ERR(handle);
1419 info = handle_to_ti_sci_info(handle);
1421 xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SYS_RESET,
1422 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1423 (u32 *)&req, sizeof(req), sizeof(*resp));
1425 ret = PTR_ERR(xfer);
1426 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
1430 ret = ti_sci_do_xfer(info, xfer);
1432 dev_err(dev, "Mbox send fail %d\n", ret);
1436 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
1438 if (!ti_sci_is_response_ack(resp))
1445 * ti_sci_cmd_proc_request() - Command to request a physical processor control
1446 * @handle: Pointer to TI SCI handle
1447 * @proc_id: Processor ID this request is for
1449 * Return: 0 if all went well, else returns appropriate error value.
1451 static int ti_sci_cmd_proc_request(const struct ti_sci_handle *handle,
1454 struct ti_sci_msg_req_proc_request req;
1455 struct ti_sci_msg_hdr *resp;
1456 struct ti_sci_info *info;
1457 struct ti_sci_xfer *xfer;
1461 return PTR_ERR(handle);
1465 info = handle_to_ti_sci_info(handle);
1467 xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_PROC_REQUEST,
1468 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1469 (u32 *)&req, sizeof(req), sizeof(*resp));
1471 ret = PTR_ERR(xfer);
1472 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
1475 req.processor_id = proc_id;
1477 ret = ti_sci_do_xfer(info, xfer);
1479 dev_err(info->dev, "Mbox send fail %d\n", ret);
1483 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
1485 if (!ti_sci_is_response_ack(resp))
1492 * ti_sci_cmd_proc_release() - Command to release a physical processor control
1493 * @handle: Pointer to TI SCI handle
1494 * @proc_id: Processor ID this request is for
1496 * Return: 0 if all went well, else returns appropriate error value.
1498 static int ti_sci_cmd_proc_release(const struct ti_sci_handle *handle,
1501 struct ti_sci_msg_req_proc_release req;
1502 struct ti_sci_msg_hdr *resp;
1503 struct ti_sci_info *info;
1504 struct ti_sci_xfer *xfer;
1508 return PTR_ERR(handle);
1512 info = handle_to_ti_sci_info(handle);
1514 xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_PROC_RELEASE,
1515 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1516 (u32 *)&req, sizeof(req), sizeof(*resp));
1518 ret = PTR_ERR(xfer);
1519 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
1522 req.processor_id = proc_id;
1524 ret = ti_sci_do_xfer(info, xfer);
1526 dev_err(info->dev, "Mbox send fail %d\n", ret);
1530 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
1532 if (!ti_sci_is_response_ack(resp))
1539 * ti_sci_cmd_proc_handover() - Command to handover a physical processor
1540 * control to a host in the processor's access
1542 * @handle: Pointer to TI SCI handle
1543 * @proc_id: Processor ID this request is for
1544 * @host_id: Host ID to get the control of the processor
1546 * Return: 0 if all went well, else returns appropriate error value.
1548 static int ti_sci_cmd_proc_handover(const struct ti_sci_handle *handle,
1549 u8 proc_id, u8 host_id)
1551 struct ti_sci_msg_req_proc_handover req;
1552 struct ti_sci_msg_hdr *resp;
1553 struct ti_sci_info *info;
1554 struct ti_sci_xfer *xfer;
1558 return PTR_ERR(handle);
1562 info = handle_to_ti_sci_info(handle);
1564 xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_PROC_HANDOVER,
1565 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1566 (u32 *)&req, sizeof(req), sizeof(*resp));
1568 ret = PTR_ERR(xfer);
1569 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
1572 req.processor_id = proc_id;
1573 req.host_id = host_id;
1575 ret = ti_sci_do_xfer(info, xfer);
1577 dev_err(info->dev, "Mbox send fail %d\n", ret);
1581 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
1583 if (!ti_sci_is_response_ack(resp))
1590 * ti_sci_cmd_set_proc_boot_cfg() - Command to set the processor boot
1591 * configuration flags
1592 * @handle: Pointer to TI SCI handle
1593 * @proc_id: Processor ID this request is for
1594 * @config_flags_set: Configuration flags to be set
1595 * @config_flags_clear: Configuration flags to be cleared.
1597 * Return: 0 if all went well, else returns appropriate error value.
1599 static int ti_sci_cmd_set_proc_boot_cfg(const struct ti_sci_handle *handle,
1600 u8 proc_id, u64 bootvector,
1601 u32 config_flags_set,
1602 u32 config_flags_clear)
1604 struct ti_sci_msg_req_set_proc_boot_config req;
1605 struct ti_sci_msg_hdr *resp;
1606 struct ti_sci_info *info;
1607 struct ti_sci_xfer *xfer;
1611 return PTR_ERR(handle);
1615 info = handle_to_ti_sci_info(handle);
1617 xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_SET_PROC_BOOT_CONFIG,
1618 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1619 (u32 *)&req, sizeof(req), sizeof(*resp));
1621 ret = PTR_ERR(xfer);
1622 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
1625 req.processor_id = proc_id;
1626 req.bootvector_low = bootvector & TISCI_ADDR_LOW_MASK;
1627 req.bootvector_high = (bootvector & TISCI_ADDR_HIGH_MASK) >>
1628 TISCI_ADDR_HIGH_SHIFT;
1629 req.config_flags_set = config_flags_set;
1630 req.config_flags_clear = config_flags_clear;
1632 ret = ti_sci_do_xfer(info, xfer);
1634 dev_err(info->dev, "Mbox send fail %d\n", ret);
1638 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
1640 if (!ti_sci_is_response_ack(resp))
1647 * ti_sci_cmd_set_proc_boot_ctrl() - Command to set the processor boot
1649 * @handle: Pointer to TI SCI handle
1650 * @proc_id: Processor ID this request is for
1651 * @control_flags_set: Control flags to be set
1652 * @control_flags_clear: Control flags to be cleared
1654 * Return: 0 if all went well, else returns appropriate error value.
1656 static int ti_sci_cmd_set_proc_boot_ctrl(const struct ti_sci_handle *handle,
1657 u8 proc_id, u32 control_flags_set,
1658 u32 control_flags_clear)
1660 struct ti_sci_msg_req_set_proc_boot_ctrl req;
1661 struct ti_sci_msg_hdr *resp;
1662 struct ti_sci_info *info;
1663 struct ti_sci_xfer *xfer;
1667 return PTR_ERR(handle);
1671 info = handle_to_ti_sci_info(handle);
1673 xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_SET_PROC_BOOT_CTRL,
1674 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1675 (u32 *)&req, sizeof(req), sizeof(*resp));
1677 ret = PTR_ERR(xfer);
1678 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
1681 req.processor_id = proc_id;
1682 req.control_flags_set = control_flags_set;
1683 req.control_flags_clear = control_flags_clear;
1685 ret = ti_sci_do_xfer(info, xfer);
1687 dev_err(info->dev, "Mbox send fail %d\n", ret);
1691 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
1693 if (!ti_sci_is_response_ack(resp))
1700 * ti_sci_cmd_proc_auth_boot_image() - Command to authenticate and load the
1701 * image and then set the processor configuration flags.
1702 * @handle: Pointer to TI SCI handle
1703 * @proc_id: Processor ID this request is for
1704 * @cert_addr: Memory address at which payload image certificate is located.
1706 * Return: 0 if all went well, else returns appropriate error value.
1708 static int ti_sci_cmd_proc_auth_boot_image(const struct ti_sci_handle *handle,
1709 u8 proc_id, u64 cert_addr)
1711 struct ti_sci_msg_req_proc_auth_boot_image req;
1712 struct ti_sci_msg_hdr *resp;
1713 struct ti_sci_info *info;
1714 struct ti_sci_xfer *xfer;
1718 return PTR_ERR(handle);
1722 info = handle_to_ti_sci_info(handle);
1724 xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_PROC_AUTH_BOOT_IMIAGE,
1725 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1726 (u32 *)&req, sizeof(req), sizeof(*resp));
1728 ret = PTR_ERR(xfer);
1729 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
1732 req.processor_id = proc_id;
1733 req.cert_addr_low = cert_addr & TISCI_ADDR_LOW_MASK;
1734 req.cert_addr_high = (cert_addr & TISCI_ADDR_HIGH_MASK) >>
1735 TISCI_ADDR_HIGH_SHIFT;
1737 ret = ti_sci_do_xfer(info, xfer);
1739 dev_err(info->dev, "Mbox send fail %d\n", ret);
1743 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
1745 if (!ti_sci_is_response_ack(resp))
1752 * ti_sci_cmd_get_proc_boot_status() - Command to get the processor boot status
1753 * @handle: Pointer to TI SCI handle
1754 * @proc_id: Processor ID this request is for
1756 * Return: 0 if all went well, else returns appropriate error value.
1758 static int ti_sci_cmd_get_proc_boot_status(const struct ti_sci_handle *handle,
1759 u8 proc_id, u64 *bv, u32 *cfg_flags,
1760 u32 *ctrl_flags, u32 *sts_flags)
1762 struct ti_sci_msg_resp_get_proc_boot_status *resp;
1763 struct ti_sci_msg_req_get_proc_boot_status req;
1764 struct ti_sci_info *info;
1765 struct ti_sci_xfer *xfer;
1769 return PTR_ERR(handle);
1773 info = handle_to_ti_sci_info(handle);
1775 xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_GET_PROC_BOOT_STATUS,
1776 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1777 (u32 *)&req, sizeof(req), sizeof(*resp));
1779 ret = PTR_ERR(xfer);
1780 dev_err(info->dev, "Message alloc failed(%d)\n", ret);
1783 req.processor_id = proc_id;
1785 ret = ti_sci_do_xfer(info, xfer);
1787 dev_err(info->dev, "Mbox send fail %d\n", ret);
1791 resp = (struct ti_sci_msg_resp_get_proc_boot_status *)
1792 xfer->tx_message.buf;
1794 if (!ti_sci_is_response_ack(resp))
1796 *bv = (resp->bootvector_low & TISCI_ADDR_LOW_MASK) |
1797 (((u64)resp->bootvector_high <<
1798 TISCI_ADDR_HIGH_SHIFT) & TISCI_ADDR_HIGH_MASK);
1799 *cfg_flags = resp->config_flags;
1800 *ctrl_flags = resp->control_flags;
1801 *sts_flags = resp->status_flags;
1807 * ti_sci_setup_ops() - Setup the operations structures
1808 * @info: pointer to TISCI pointer
1810 static void ti_sci_setup_ops(struct ti_sci_info *info)
1812 struct ti_sci_ops *ops = &info->handle.ops;
1813 struct ti_sci_board_ops *bops = &ops->board_ops;
1814 struct ti_sci_dev_ops *dops = &ops->dev_ops;
1815 struct ti_sci_clk_ops *cops = &ops->clk_ops;
1816 struct ti_sci_core_ops *core_ops = &ops->core_ops;
1817 struct ti_sci_proc_ops *pops = &ops->proc_ops;
1819 bops->board_config = ti_sci_cmd_set_board_config;
1820 bops->board_config_rm = ti_sci_cmd_set_board_config_rm;
1821 bops->board_config_security = ti_sci_cmd_set_board_config_security;
1822 bops->board_config_pm = ti_sci_cmd_set_board_config_pm;
1824 dops->get_device = ti_sci_cmd_get_device;
1825 dops->idle_device = ti_sci_cmd_idle_device;
1826 dops->put_device = ti_sci_cmd_put_device;
1827 dops->is_valid = ti_sci_cmd_dev_is_valid;
1828 dops->get_context_loss_count = ti_sci_cmd_dev_get_clcnt;
1829 dops->is_idle = ti_sci_cmd_dev_is_idle;
1830 dops->is_stop = ti_sci_cmd_dev_is_stop;
1831 dops->is_on = ti_sci_cmd_dev_is_on;
1832 dops->is_transitioning = ti_sci_cmd_dev_is_trans;
1833 dops->set_device_resets = ti_sci_cmd_set_device_resets;
1834 dops->get_device_resets = ti_sci_cmd_get_device_resets;
1836 cops->get_clock = ti_sci_cmd_get_clock;
1837 cops->idle_clock = ti_sci_cmd_idle_clock;
1838 cops->put_clock = ti_sci_cmd_put_clock;
1839 cops->is_auto = ti_sci_cmd_clk_is_auto;
1840 cops->is_on = ti_sci_cmd_clk_is_on;
1841 cops->is_off = ti_sci_cmd_clk_is_off;
1843 cops->set_parent = ti_sci_cmd_clk_set_parent;
1844 cops->get_parent = ti_sci_cmd_clk_get_parent;
1845 cops->get_num_parents = ti_sci_cmd_clk_get_num_parents;
1847 cops->get_best_match_freq = ti_sci_cmd_clk_get_match_freq;
1848 cops->set_freq = ti_sci_cmd_clk_set_freq;
1849 cops->get_freq = ti_sci_cmd_clk_get_freq;
1851 core_ops->reboot_device = ti_sci_cmd_core_reboot;
1853 pops->proc_request = ti_sci_cmd_proc_request;
1854 pops->proc_release = ti_sci_cmd_proc_release;
1855 pops->proc_handover = ti_sci_cmd_proc_handover;
1856 pops->set_proc_boot_cfg = ti_sci_cmd_set_proc_boot_cfg;
1857 pops->set_proc_boot_ctrl = ti_sci_cmd_set_proc_boot_ctrl;
1858 pops->proc_auth_boot_image = ti_sci_cmd_proc_auth_boot_image;
1859 pops->get_proc_boot_status = ti_sci_cmd_get_proc_boot_status;
1863 * ti_sci_get_handle_from_sysfw() - Get the TI SCI handle of the SYSFW
1864 * @dev: Pointer to the SYSFW device
1866 * Return: pointer to handle if successful, else EINVAL if invalid conditions
1870 struct ti_sci_handle *ti_sci_get_handle_from_sysfw(struct udevice *sci_dev)
1873 return ERR_PTR(-EINVAL);
1875 struct ti_sci_info *info = dev_get_priv(sci_dev);
1878 return ERR_PTR(-EINVAL);
1880 struct ti_sci_handle *handle = &info->handle;
1883 return ERR_PTR(-EINVAL);
1889 * ti_sci_get_handle() - Get the TI SCI handle for a device
1890 * @dev: Pointer to device for which we want SCI handle
1892 * Return: pointer to handle if successful, else EINVAL if invalid conditions
1895 const struct ti_sci_handle *ti_sci_get_handle(struct udevice *dev)
1898 return ERR_PTR(-EINVAL);
1900 struct udevice *sci_dev = dev_get_parent(dev);
1902 return ti_sci_get_handle_from_sysfw(sci_dev);
1906 * ti_sci_get_by_phandle() - Get the TI SCI handle using DT phandle
1908 * @propname: property name containing phandle on TISCI node
1910 * Return: pointer to handle if successful, else appropriate error value.
1912 const struct ti_sci_handle *ti_sci_get_by_phandle(struct udevice *dev,
1913 const char *property)
1915 struct ti_sci_info *entry, *info = NULL;
1919 err = ofnode_read_u32(dev_ofnode(dev), property, &phandle);
1921 return ERR_PTR(err);
1923 node = ofnode_get_by_phandle(phandle);
1924 if (!ofnode_valid(node))
1925 return ERR_PTR(-EINVAL);
1927 list_for_each_entry(entry, &ti_sci_list, list)
1928 if (ofnode_equal(dev_ofnode(entry->dev), node)) {
1934 return ERR_PTR(-ENODEV);
1936 return &info->handle;
1940 * ti_sci_of_to_info() - generate private data from device tree
1941 * @dev: corresponding system controller interface device
1942 * @info: pointer to driver specific private data
1944 * Return: 0 if all goes good, else appropriate error message.
1946 static int ti_sci_of_to_info(struct udevice *dev, struct ti_sci_info *info)
1950 ret = mbox_get_by_name(dev, "tx", &info->chan_tx);
1952 dev_err(dev, "%s: Acquiring Tx channel failed. ret = %d\n",
1957 ret = mbox_get_by_name(dev, "rx", &info->chan_rx);
1959 dev_err(dev, "%s: Acquiring Rx channel failed. ret = %d\n",
1964 /* Notify channel is optional. Enable only if populated */
1965 ret = mbox_get_by_name(dev, "notify", &info->chan_notify);
1967 dev_dbg(dev, "%s: Acquiring notify channel failed. ret = %d\n",
1971 info->host_id = dev_read_u32_default(dev, "ti,host-id",
1972 info->desc->host_id);
1974 info->is_secure = dev_read_bool(dev, "ti,secure-host");
1980 * ti_sci_probe() - Basic probe
1981 * @dev: corresponding system controller interface device
1983 * Return: 0 if all goes good, else appropriate error message.
1985 static int ti_sci_probe(struct udevice *dev)
1987 struct ti_sci_info *info;
1990 debug("%s(dev=%p)\n", __func__, dev);
1992 info = dev_get_priv(dev);
1993 info->desc = (void *)dev_get_driver_data(dev);
1995 ret = ti_sci_of_to_info(dev, info);
1997 dev_err(dev, "%s: Probe failed with error %d\n", __func__, ret);
2004 list_add_tail(&info->list, &ti_sci_list);
2005 ti_sci_setup_ops(info);
2007 ret = ti_sci_cmd_get_revision(&info->handle);
2012 /* Description for AM654 */
2013 static const struct ti_sci_desc ti_sci_sysfw_am654_desc = {
2015 .max_rx_timeout_us = 1000000,
2019 static const struct udevice_id ti_sci_ids[] = {
2021 .compatible = "ti,k2g-sci",
2022 .data = (ulong)&ti_sci_sysfw_am654_desc
2027 U_BOOT_DRIVER(ti_sci) = {
2029 .id = UCLASS_FIRMWARE,
2030 .of_match = ti_sci_ids,
2031 .probe = ti_sci_probe,
2032 .priv_auto_alloc_size = sizeof(struct ti_sci_info),