1 // SPDX-License-Identifier: GPL-2.0
3 * Texas Instruments System Control Interface Protocol Driver
5 * Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/
9 #define pr_fmt(fmt) "%s: " fmt, __func__
11 #include <linux/bitmap.h>
12 #include <linux/debugfs.h>
13 #include <linux/export.h>
15 #include <linux/kernel.h>
16 #include <linux/mailbox_client.h>
17 #include <linux/module.h>
18 #include <linux/of_device.h>
19 #include <linux/semaphore.h>
20 #include <linux/slab.h>
21 #include <linux/soc/ti/ti-msgmgr.h>
22 #include <linux/soc/ti/ti_sci_protocol.h>
23 #include <linux/reboot.h>
27 /* List of all TI SCI devices active in system */
28 static LIST_HEAD(ti_sci_list);
29 /* Protection for the entire list */
30 static DEFINE_MUTEX(ti_sci_list_mutex);
33 * struct ti_sci_xfer - Structure representing a message flow
34 * @tx_message: Transmit message
35 * @rx_len: Receive message length
36 * @xfer_buf: Preallocated buffer to store receive message
37 * Since we work with request-ACK protocol, we can
38 * reuse the same buffer for the rx path as we
39 * use for the tx path.
40 * @done: completion event
43 struct ti_msgmgr_message tx_message;
46 struct completion done;
50 * struct ti_sci_xfers_info - Structure to manage transfer information
51 * @sem_xfer_count: Counting Semaphore for managing max simultaneous
53 * @xfer_block: Preallocated Message array
54 * @xfer_alloc_table: Bitmap table for allocated messages.
55 * Index of this bitmap table is also used for message
56 * sequence identifier.
57 * @xfer_lock: Protection for message allocation
59 struct ti_sci_xfers_info {
60 struct semaphore sem_xfer_count;
61 struct ti_sci_xfer *xfer_block;
62 unsigned long *xfer_alloc_table;
63 /* protect transfer allocation */
68 * struct ti_sci_rm_type_map - Structure representing TISCI Resource
69 * management representation of dev_ids.
70 * @dev_id: TISCI device ID
71 * @type: Corresponding id as identified by TISCI RM.
73 * Note: This is used only as a work around for using RM range apis
74 * for AM654 SoC. For future SoCs dev_id will be used as type
75 * for RM range APIs. In order to maintain ABI backward compatibility
76 * type is not being changed for AM654 SoC.
78 struct ti_sci_rm_type_map {
84 * struct ti_sci_desc - Description of SoC integration
85 * @default_host_id: Host identifier representing the compute entity
86 * @max_rx_timeout_ms: Timeout for communication with SoC (in Milliseconds)
87 * @max_msgs: Maximum number of messages that can be pending
88 * simultaneously in the system
89 * @max_msg_size: Maximum size of data per message that can be handled.
90 * @rm_type_map: RM resource type mapping structure.
94 int max_rx_timeout_ms;
97 struct ti_sci_rm_type_map *rm_type_map;
101 * struct ti_sci_info - Structure representing a TI SCI instance
102 * @dev: Device pointer
103 * @desc: SoC description for this instance
104 * @nb: Reboot Notifier block
105 * @d: Debugfs file entry
106 * @debug_region: Memory region where the debug message are available
107 * @debug_region_size: Debug region size
108 * @debug_buffer: Buffer allocated to copy debug messages.
109 * @handle: Instance of TI SCI handle to send to clients.
110 * @cl: Mailbox Client
111 * @chan_tx: Transmit mailbox channel
112 * @chan_rx: Receive mailbox channel
113 * @minfo: Message info
116 * @users: Number of users of this instance
120 struct notifier_block nb;
121 const struct ti_sci_desc *desc;
123 void __iomem *debug_region;
125 size_t debug_region_size;
126 struct ti_sci_handle handle;
127 struct mbox_client cl;
128 struct mbox_chan *chan_tx;
129 struct mbox_chan *chan_rx;
130 struct ti_sci_xfers_info minfo;
131 struct list_head node;
133 /* protected by ti_sci_list_mutex */
138 #define cl_to_ti_sci_info(c) container_of(c, struct ti_sci_info, cl)
139 #define handle_to_ti_sci_info(h) container_of(h, struct ti_sci_info, handle)
140 #define reboot_to_ti_sci_info(n) container_of(n, struct ti_sci_info, nb)
142 #ifdef CONFIG_DEBUG_FS
145 * ti_sci_debug_show() - Helper to dump the debug log
146 * @s: sequence file pointer
151 static int ti_sci_debug_show(struct seq_file *s, void *unused)
153 struct ti_sci_info *info = s->private;
155 memcpy_fromio(info->debug_buffer, info->debug_region,
156 info->debug_region_size);
158 * We don't trust firmware to leave NULL terminated last byte (hence
159 * we have allocated 1 extra 0 byte). Since we cannot guarantee any
160 * specific data format for debug messages, We just present the data
161 * in the buffer as is - we expect the messages to be self explanatory.
163 seq_puts(s, info->debug_buffer);
167 /* Provide the log file operations interface*/
168 DEFINE_SHOW_ATTRIBUTE(ti_sci_debug);
171 * ti_sci_debugfs_create() - Create log debug file
172 * @pdev: platform device pointer
173 * @info: Pointer to SCI entity information
175 * Return: 0 if all went fine, else corresponding error.
177 static int ti_sci_debugfs_create(struct platform_device *pdev,
178 struct ti_sci_info *info)
180 struct device *dev = &pdev->dev;
181 struct resource *res;
182 char debug_name[50] = "ti_sci_debug@";
184 /* Debug region is optional */
185 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
187 info->debug_region = devm_ioremap_resource(dev, res);
188 if (IS_ERR(info->debug_region))
190 info->debug_region_size = resource_size(res);
192 info->debug_buffer = devm_kcalloc(dev, info->debug_region_size + 1,
193 sizeof(char), GFP_KERNEL);
194 if (!info->debug_buffer)
196 /* Setup NULL termination */
197 info->debug_buffer[info->debug_region_size] = 0;
199 info->d = debugfs_create_file(strncat(debug_name, dev_name(dev),
201 sizeof("ti_sci_debug@")),
202 0444, NULL, info, &ti_sci_debug_fops);
204 return PTR_ERR(info->d);
206 dev_dbg(dev, "Debug region => %p, size = %zu bytes, resource: %pr\n",
207 info->debug_region, info->debug_region_size, res);
212 * ti_sci_debugfs_destroy() - clean up log debug file
213 * @pdev: platform device pointer
214 * @info: Pointer to SCI entity information
216 static void ti_sci_debugfs_destroy(struct platform_device *pdev,
217 struct ti_sci_info *info)
219 if (IS_ERR(info->debug_region))
222 debugfs_remove(info->d);
224 #else /* CONFIG_DEBUG_FS */
225 static inline int ti_sci_debugfs_create(struct platform_device *dev,
226 struct ti_sci_info *info)
231 static inline void ti_sci_debugfs_destroy(struct platform_device *dev,
232 struct ti_sci_info *info)
235 #endif /* CONFIG_DEBUG_FS */
238 * ti_sci_dump_header_dbg() - Helper to dump a message header.
239 * @dev: Device pointer corresponding to the SCI entity
240 * @hdr: pointer to header.
242 static inline void ti_sci_dump_header_dbg(struct device *dev,
243 struct ti_sci_msg_hdr *hdr)
245 dev_dbg(dev, "MSGHDR:type=0x%04x host=0x%02x seq=0x%02x flags=0x%08x\n",
246 hdr->type, hdr->host, hdr->seq, hdr->flags);
250 * ti_sci_rx_callback() - mailbox client callback for receive messages
251 * @cl: client pointer
252 * @m: mailbox message
254 * Processes one received message to appropriate transfer information and
255 * signals completion of the transfer.
257 * NOTE: This function will be invoked in IRQ context, hence should be
258 * as optimal as possible.
260 static void ti_sci_rx_callback(struct mbox_client *cl, void *m)
262 struct ti_sci_info *info = cl_to_ti_sci_info(cl);
263 struct device *dev = info->dev;
264 struct ti_sci_xfers_info *minfo = &info->minfo;
265 struct ti_msgmgr_message *mbox_msg = m;
266 struct ti_sci_msg_hdr *hdr = (struct ti_sci_msg_hdr *)mbox_msg->buf;
267 struct ti_sci_xfer *xfer;
273 * Are we even expecting this?
274 * NOTE: barriers were implicit in locks used for modifying the bitmap
276 if (!test_bit(xfer_id, minfo->xfer_alloc_table)) {
277 dev_err(dev, "Message for %d is not expected!\n", xfer_id);
281 xfer = &minfo->xfer_block[xfer_id];
283 /* Is the message of valid length? */
284 if (mbox_msg->len > info->desc->max_msg_size) {
285 dev_err(dev, "Unable to handle %zu xfer(max %d)\n",
286 mbox_msg->len, info->desc->max_msg_size);
287 ti_sci_dump_header_dbg(dev, hdr);
290 if (mbox_msg->len < xfer->rx_len) {
291 dev_err(dev, "Recv xfer %zu < expected %d length\n",
292 mbox_msg->len, xfer->rx_len);
293 ti_sci_dump_header_dbg(dev, hdr);
297 ti_sci_dump_header_dbg(dev, hdr);
298 /* Take a copy to the rx buffer.. */
299 memcpy(xfer->xfer_buf, mbox_msg->buf, xfer->rx_len);
300 complete(&xfer->done);
304 * ti_sci_get_one_xfer() - Allocate one message
305 * @info: Pointer to SCI entity information
306 * @msg_type: Message type
307 * @msg_flags: Flag to set for the message
308 * @tx_message_size: transmit message size
309 * @rx_message_size: receive message size
311 * Helper function which is used by various command functions that are
312 * exposed to clients of this driver for allocating a message traffic event.
314 * This function can sleep depending on pending requests already in the system
315 * for the SCI entity. Further, this also holds a spinlock to maintain integrity
316 * of internal data structures.
318 * Return: 0 if all went fine, else corresponding error.
320 static struct ti_sci_xfer *ti_sci_get_one_xfer(struct ti_sci_info *info,
321 u16 msg_type, u32 msg_flags,
322 size_t tx_message_size,
323 size_t rx_message_size)
325 struct ti_sci_xfers_info *minfo = &info->minfo;
326 struct ti_sci_xfer *xfer;
327 struct ti_sci_msg_hdr *hdr;
329 unsigned long bit_pos;
334 /* Ensure we have sane transfer sizes */
335 if (rx_message_size > info->desc->max_msg_size ||
336 tx_message_size > info->desc->max_msg_size ||
337 rx_message_size < sizeof(*hdr) || tx_message_size < sizeof(*hdr))
338 return ERR_PTR(-ERANGE);
341 * Ensure we have only controlled number of pending messages.
342 * Ideally, we might just have to wait a single message, be
343 * conservative and wait 5 times that..
345 timeout = msecs_to_jiffies(info->desc->max_rx_timeout_ms) * 5;
346 ret = down_timeout(&minfo->sem_xfer_count, timeout);
350 /* Keep the locked section as small as possible */
351 spin_lock_irqsave(&minfo->xfer_lock, flags);
352 bit_pos = find_first_zero_bit(minfo->xfer_alloc_table,
353 info->desc->max_msgs);
354 set_bit(bit_pos, minfo->xfer_alloc_table);
355 spin_unlock_irqrestore(&minfo->xfer_lock, flags);
358 * We already ensured in probe that we can have max messages that can
359 * fit in hdr.seq - NOTE: this improves access latencies
360 * to predictable O(1) access, BUT, it opens us to risk if
361 * remote misbehaves with corrupted message sequence responses.
362 * If that happens, we are going to be messed up anyways..
364 xfer_id = (u8)bit_pos;
366 xfer = &minfo->xfer_block[xfer_id];
368 hdr = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
369 xfer->tx_message.len = tx_message_size;
370 xfer->rx_len = (u8)rx_message_size;
372 reinit_completion(&xfer->done);
375 hdr->type = msg_type;
376 hdr->host = info->host_id;
377 hdr->flags = msg_flags;
383 * ti_sci_put_one_xfer() - Release a message
384 * @minfo: transfer info pointer
385 * @xfer: message that was reserved by ti_sci_get_one_xfer
387 * This holds a spinlock to maintain integrity of internal data structures.
389 static void ti_sci_put_one_xfer(struct ti_sci_xfers_info *minfo,
390 struct ti_sci_xfer *xfer)
393 struct ti_sci_msg_hdr *hdr;
396 hdr = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
400 * Keep the locked section as small as possible
401 * NOTE: we might escape with smp_mb and no lock here..
402 * but just be conservative and symmetric.
404 spin_lock_irqsave(&minfo->xfer_lock, flags);
405 clear_bit(xfer_id, minfo->xfer_alloc_table);
406 spin_unlock_irqrestore(&minfo->xfer_lock, flags);
408 /* Increment the count for the next user to get through */
409 up(&minfo->sem_xfer_count);
413 * ti_sci_do_xfer() - Do one transfer
414 * @info: Pointer to SCI entity information
415 * @xfer: Transfer to initiate and wait for response
417 * Return: -ETIMEDOUT in case of no response, if transmit error,
418 * return corresponding error, else if all goes well,
421 static inline int ti_sci_do_xfer(struct ti_sci_info *info,
422 struct ti_sci_xfer *xfer)
426 struct device *dev = info->dev;
428 ret = mbox_send_message(info->chan_tx, &xfer->tx_message);
434 /* And we wait for the response. */
435 timeout = msecs_to_jiffies(info->desc->max_rx_timeout_ms);
436 if (!wait_for_completion_timeout(&xfer->done, timeout)) {
437 dev_err(dev, "Mbox timedout in resp(caller: %pS)\n",
442 * NOTE: we might prefer not to need the mailbox ticker to manage the
443 * transfer queueing since the protocol layer queues things by itself.
444 * Unfortunately, we have to kick the mailbox framework after we have
445 * received our message.
447 mbox_client_txdone(info->chan_tx, ret);
453 * ti_sci_cmd_get_revision() - command to get the revision of the SCI entity
454 * @info: Pointer to SCI entity information
456 * Updates the SCI information in the internal data structure.
458 * Return: 0 if all went fine, else return appropriate error.
460 static int ti_sci_cmd_get_revision(struct ti_sci_info *info)
462 struct device *dev = info->dev;
463 struct ti_sci_handle *handle = &info->handle;
464 struct ti_sci_version_info *ver = &handle->version;
465 struct ti_sci_msg_resp_version *rev_info;
466 struct ti_sci_xfer *xfer;
469 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_VERSION,
470 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
471 sizeof(struct ti_sci_msg_hdr),
475 dev_err(dev, "Message alloc failed(%d)\n", ret);
479 rev_info = (struct ti_sci_msg_resp_version *)xfer->xfer_buf;
481 ret = ti_sci_do_xfer(info, xfer);
483 dev_err(dev, "Mbox send fail %d\n", ret);
487 ver->abi_major = rev_info->abi_major;
488 ver->abi_minor = rev_info->abi_minor;
489 ver->firmware_revision = rev_info->firmware_revision;
490 strncpy(ver->firmware_description, rev_info->firmware_description,
491 sizeof(ver->firmware_description));
494 ti_sci_put_one_xfer(&info->minfo, xfer);
499 * ti_sci_is_response_ack() - Generic ACK/NACK message checkup
500 * @r: pointer to response buffer
502 * Return: true if the response was an ACK, else returns false.
504 static inline bool ti_sci_is_response_ack(void *r)
506 struct ti_sci_msg_hdr *hdr = r;
508 return hdr->flags & TI_SCI_FLAG_RESP_GENERIC_ACK ? true : false;
512 * ti_sci_set_device_state() - Set device state helper
513 * @handle: pointer to TI SCI handle
514 * @id: Device identifier
515 * @flags: flags to setup for the device
516 * @state: State to move the device to
518 * Return: 0 if all went well, else returns appropriate error value.
520 static int ti_sci_set_device_state(const struct ti_sci_handle *handle,
521 u32 id, u32 flags, u8 state)
523 struct ti_sci_info *info;
524 struct ti_sci_msg_req_set_device_state *req;
525 struct ti_sci_msg_hdr *resp;
526 struct ti_sci_xfer *xfer;
531 return PTR_ERR(handle);
535 info = handle_to_ti_sci_info(handle);
538 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_DEVICE_STATE,
539 flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
540 sizeof(*req), sizeof(*resp));
543 dev_err(dev, "Message alloc failed(%d)\n", ret);
546 req = (struct ti_sci_msg_req_set_device_state *)xfer->xfer_buf;
550 ret = ti_sci_do_xfer(info, xfer);
552 dev_err(dev, "Mbox send fail %d\n", ret);
556 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
558 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
561 ti_sci_put_one_xfer(&info->minfo, xfer);
567 * ti_sci_get_device_state() - Get device state helper
568 * @handle: Handle to the device
569 * @id: Device Identifier
570 * @clcnt: Pointer to Context Loss Count
571 * @resets: pointer to resets
572 * @p_state: pointer to p_state
573 * @c_state: pointer to c_state
575 * Return: 0 if all went fine, else return appropriate error.
577 static int ti_sci_get_device_state(const struct ti_sci_handle *handle,
578 u32 id, u32 *clcnt, u32 *resets,
579 u8 *p_state, u8 *c_state)
581 struct ti_sci_info *info;
582 struct ti_sci_msg_req_get_device_state *req;
583 struct ti_sci_msg_resp_get_device_state *resp;
584 struct ti_sci_xfer *xfer;
589 return PTR_ERR(handle);
593 if (!clcnt && !resets && !p_state && !c_state)
596 info = handle_to_ti_sci_info(handle);
599 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_DEVICE_STATE,
600 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
601 sizeof(*req), sizeof(*resp));
604 dev_err(dev, "Message alloc failed(%d)\n", ret);
607 req = (struct ti_sci_msg_req_get_device_state *)xfer->xfer_buf;
610 ret = ti_sci_do_xfer(info, xfer);
612 dev_err(dev, "Mbox send fail %d\n", ret);
616 resp = (struct ti_sci_msg_resp_get_device_state *)xfer->xfer_buf;
617 if (!ti_sci_is_response_ack(resp)) {
623 *clcnt = resp->context_loss_count;
625 *resets = resp->resets;
627 *p_state = resp->programmed_state;
629 *c_state = resp->current_state;
631 ti_sci_put_one_xfer(&info->minfo, xfer);
637 * ti_sci_cmd_get_device() - command to request for device managed by TISCI
638 * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle
639 * @id: Device Identifier
641 * Request for the device - NOTE: the client MUST maintain integrity of
642 * usage count by balancing get_device with put_device. No refcounting is
643 * managed by driver for that purpose.
645 * NOTE: The request is for exclusive access for the processor.
647 * Return: 0 if all went fine, else return appropriate error.
649 static int ti_sci_cmd_get_device(const struct ti_sci_handle *handle, u32 id)
651 return ti_sci_set_device_state(handle, id,
652 MSG_FLAG_DEVICE_EXCLUSIVE,
653 MSG_DEVICE_SW_STATE_ON);
657 * ti_sci_cmd_idle_device() - Command to idle a device managed by TISCI
658 * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle
659 * @id: Device Identifier
661 * Request for the device - NOTE: the client MUST maintain integrity of
662 * usage count by balancing get_device with put_device. No refcounting is
663 * managed by driver for that purpose.
665 * Return: 0 if all went fine, else return appropriate error.
667 static int ti_sci_cmd_idle_device(const struct ti_sci_handle *handle, u32 id)
669 return ti_sci_set_device_state(handle, id,
670 MSG_FLAG_DEVICE_EXCLUSIVE,
671 MSG_DEVICE_SW_STATE_RETENTION);
675 * ti_sci_cmd_put_device() - command to release a device managed by TISCI
676 * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle
677 * @id: Device Identifier
679 * Request for the device - NOTE: the client MUST maintain integrity of
680 * usage count by balancing get_device with put_device. No refcounting is
681 * managed by driver for that purpose.
683 * Return: 0 if all went fine, else return appropriate error.
685 static int ti_sci_cmd_put_device(const struct ti_sci_handle *handle, u32 id)
687 return ti_sci_set_device_state(handle, id,
688 0, MSG_DEVICE_SW_STATE_AUTO_OFF);
692 * ti_sci_cmd_dev_is_valid() - Is the device valid
693 * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle
694 * @id: Device Identifier
696 * Return: 0 if all went fine and the device ID is valid, else return
699 static int ti_sci_cmd_dev_is_valid(const struct ti_sci_handle *handle, u32 id)
703 /* check the device state which will also tell us if the ID is valid */
704 return ti_sci_get_device_state(handle, id, NULL, NULL, NULL, &unused);
708 * ti_sci_cmd_dev_get_clcnt() - Get context loss counter
709 * @handle: Pointer to TISCI handle
710 * @id: Device Identifier
711 * @count: Pointer to Context Loss counter to populate
713 * Return: 0 if all went fine, else return appropriate error.
715 static int ti_sci_cmd_dev_get_clcnt(const struct ti_sci_handle *handle, u32 id,
718 return ti_sci_get_device_state(handle, id, count, NULL, NULL, NULL);
722 * ti_sci_cmd_dev_is_idle() - Check if the device is requested to be idle
723 * @handle: Pointer to TISCI handle
724 * @id: Device Identifier
725 * @r_state: true if requested to be idle
727 * Return: 0 if all went fine, else return appropriate error.
729 static int ti_sci_cmd_dev_is_idle(const struct ti_sci_handle *handle, u32 id,
738 ret = ti_sci_get_device_state(handle, id, NULL, NULL, &state, NULL);
742 *r_state = (state == MSG_DEVICE_SW_STATE_RETENTION);
748 * ti_sci_cmd_dev_is_stop() - Check if the device is requested to be stopped
749 * @handle: Pointer to TISCI handle
750 * @id: Device Identifier
751 * @r_state: true if requested to be stopped
752 * @curr_state: true if currently stopped.
754 * Return: 0 if all went fine, else return appropriate error.
756 static int ti_sci_cmd_dev_is_stop(const struct ti_sci_handle *handle, u32 id,
757 bool *r_state, bool *curr_state)
762 if (!r_state && !curr_state)
766 ti_sci_get_device_state(handle, id, NULL, NULL, &p_state, &c_state);
771 *r_state = (p_state == MSG_DEVICE_SW_STATE_AUTO_OFF);
773 *curr_state = (c_state == MSG_DEVICE_HW_STATE_OFF);
779 * ti_sci_cmd_dev_is_on() - Check if the device is requested to be ON
780 * @handle: Pointer to TISCI handle
781 * @id: Device Identifier
782 * @r_state: true if requested to be ON
783 * @curr_state: true if currently ON and active
785 * Return: 0 if all went fine, else return appropriate error.
787 static int ti_sci_cmd_dev_is_on(const struct ti_sci_handle *handle, u32 id,
788 bool *r_state, bool *curr_state)
793 if (!r_state && !curr_state)
797 ti_sci_get_device_state(handle, id, NULL, NULL, &p_state, &c_state);
802 *r_state = (p_state == MSG_DEVICE_SW_STATE_ON);
804 *curr_state = (c_state == MSG_DEVICE_HW_STATE_ON);
810 * ti_sci_cmd_dev_is_trans() - Check if the device is currently transitioning
811 * @handle: Pointer to TISCI handle
812 * @id: Device Identifier
813 * @curr_state: true if currently transitioning.
815 * Return: 0 if all went fine, else return appropriate error.
817 static int ti_sci_cmd_dev_is_trans(const struct ti_sci_handle *handle, u32 id,
826 ret = ti_sci_get_device_state(handle, id, NULL, NULL, NULL, &state);
830 *curr_state = (state == MSG_DEVICE_HW_STATE_TRANS);
836 * ti_sci_cmd_set_device_resets() - command to set resets for device managed
838 * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle
839 * @id: Device Identifier
840 * @reset_state: Device specific reset bit field
842 * Return: 0 if all went fine, else return appropriate error.
844 static int ti_sci_cmd_set_device_resets(const struct ti_sci_handle *handle,
845 u32 id, u32 reset_state)
847 struct ti_sci_info *info;
848 struct ti_sci_msg_req_set_device_resets *req;
849 struct ti_sci_msg_hdr *resp;
850 struct ti_sci_xfer *xfer;
855 return PTR_ERR(handle);
859 info = handle_to_ti_sci_info(handle);
862 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_DEVICE_RESETS,
863 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
864 sizeof(*req), sizeof(*resp));
867 dev_err(dev, "Message alloc failed(%d)\n", ret);
870 req = (struct ti_sci_msg_req_set_device_resets *)xfer->xfer_buf;
872 req->resets = reset_state;
874 ret = ti_sci_do_xfer(info, xfer);
876 dev_err(dev, "Mbox send fail %d\n", ret);
880 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
882 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
885 ti_sci_put_one_xfer(&info->minfo, xfer);
891 * ti_sci_cmd_get_device_resets() - Get reset state for device managed
893 * @handle: Pointer to TISCI handle
894 * @id: Device Identifier
895 * @reset_state: Pointer to reset state to populate
897 * Return: 0 if all went fine, else return appropriate error.
899 static int ti_sci_cmd_get_device_resets(const struct ti_sci_handle *handle,
900 u32 id, u32 *reset_state)
902 return ti_sci_get_device_state(handle, id, NULL, reset_state, NULL,
907 * ti_sci_set_clock_state() - Set clock state helper
908 * @handle: pointer to TI SCI handle
909 * @dev_id: Device identifier this request is for
910 * @clk_id: Clock identifier for the device for this request.
911 * Each device has it's own set of clock inputs. This indexes
912 * which clock input to modify.
913 * @flags: Header flags as needed
914 * @state: State to request for the clock.
916 * Return: 0 if all went well, else returns appropriate error value.
918 static int ti_sci_set_clock_state(const struct ti_sci_handle *handle,
919 u32 dev_id, u8 clk_id,
922 struct ti_sci_info *info;
923 struct ti_sci_msg_req_set_clock_state *req;
924 struct ti_sci_msg_hdr *resp;
925 struct ti_sci_xfer *xfer;
930 return PTR_ERR(handle);
934 info = handle_to_ti_sci_info(handle);
937 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CLOCK_STATE,
938 flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
939 sizeof(*req), sizeof(*resp));
942 dev_err(dev, "Message alloc failed(%d)\n", ret);
945 req = (struct ti_sci_msg_req_set_clock_state *)xfer->xfer_buf;
946 req->dev_id = dev_id;
947 req->clk_id = clk_id;
948 req->request_state = state;
950 ret = ti_sci_do_xfer(info, xfer);
952 dev_err(dev, "Mbox send fail %d\n", ret);
956 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
958 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
961 ti_sci_put_one_xfer(&info->minfo, xfer);
967 * ti_sci_cmd_get_clock_state() - Get clock state helper
968 * @handle: pointer to TI SCI handle
969 * @dev_id: Device identifier this request is for
970 * @clk_id: Clock identifier for the device for this request.
971 * Each device has it's own set of clock inputs. This indexes
972 * which clock input to modify.
973 * @programmed_state: State requested for clock to move to
974 * @current_state: State that the clock is currently in
976 * Return: 0 if all went well, else returns appropriate error value.
978 static int ti_sci_cmd_get_clock_state(const struct ti_sci_handle *handle,
979 u32 dev_id, u8 clk_id,
980 u8 *programmed_state, u8 *current_state)
982 struct ti_sci_info *info;
983 struct ti_sci_msg_req_get_clock_state *req;
984 struct ti_sci_msg_resp_get_clock_state *resp;
985 struct ti_sci_xfer *xfer;
990 return PTR_ERR(handle);
994 if (!programmed_state && !current_state)
997 info = handle_to_ti_sci_info(handle);
1000 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_CLOCK_STATE,
1001 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1002 sizeof(*req), sizeof(*resp));
1004 ret = PTR_ERR(xfer);
1005 dev_err(dev, "Message alloc failed(%d)\n", ret);
1008 req = (struct ti_sci_msg_req_get_clock_state *)xfer->xfer_buf;
1009 req->dev_id = dev_id;
1010 req->clk_id = clk_id;
1012 ret = ti_sci_do_xfer(info, xfer);
1014 dev_err(dev, "Mbox send fail %d\n", ret);
1018 resp = (struct ti_sci_msg_resp_get_clock_state *)xfer->xfer_buf;
1020 if (!ti_sci_is_response_ack(resp)) {
1025 if (programmed_state)
1026 *programmed_state = resp->programmed_state;
1028 *current_state = resp->current_state;
1031 ti_sci_put_one_xfer(&info->minfo, xfer);
1037 * ti_sci_cmd_get_clock() - Get control of a clock from TI SCI
1038 * @handle: pointer to TI SCI handle
1039 * @dev_id: Device identifier this request is for
1040 * @clk_id: Clock identifier for the device for this request.
1041 * Each device has it's own set of clock inputs. This indexes
1042 * which clock input to modify.
1043 * @needs_ssc: 'true' if Spread Spectrum clock is desired, else 'false'
1044 * @can_change_freq: 'true' if frequency change is desired, else 'false'
1045 * @enable_input_term: 'true' if input termination is desired, else 'false'
1047 * Return: 0 if all went well, else returns appropriate error value.
1049 static int ti_sci_cmd_get_clock(const struct ti_sci_handle *handle, u32 dev_id,
1050 u8 clk_id, bool needs_ssc, bool can_change_freq,
1051 bool enable_input_term)
1055 flags |= needs_ssc ? MSG_FLAG_CLOCK_ALLOW_SSC : 0;
1056 flags |= can_change_freq ? MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE : 0;
1057 flags |= enable_input_term ? MSG_FLAG_CLOCK_INPUT_TERM : 0;
1059 return ti_sci_set_clock_state(handle, dev_id, clk_id, flags,
1060 MSG_CLOCK_SW_STATE_REQ);
1064 * ti_sci_cmd_idle_clock() - Idle a clock which is in our control
1065 * @handle: pointer to TI SCI handle
1066 * @dev_id: Device identifier this request is for
1067 * @clk_id: Clock identifier for the device for this request.
1068 * Each device has it's own set of clock inputs. This indexes
1069 * which clock input to modify.
1071 * NOTE: This clock must have been requested by get_clock previously.
1073 * Return: 0 if all went well, else returns appropriate error value.
1075 static int ti_sci_cmd_idle_clock(const struct ti_sci_handle *handle,
1076 u32 dev_id, u8 clk_id)
1078 return ti_sci_set_clock_state(handle, dev_id, clk_id, 0,
1079 MSG_CLOCK_SW_STATE_UNREQ);
1083 * ti_sci_cmd_put_clock() - Release a clock from our control back to TISCI
1084 * @handle: pointer to TI SCI handle
1085 * @dev_id: Device identifier this request is for
1086 * @clk_id: Clock identifier for the device for this request.
1087 * Each device has it's own set of clock inputs. This indexes
1088 * which clock input to modify.
1090 * NOTE: This clock must have been requested by get_clock previously.
1092 * Return: 0 if all went well, else returns appropriate error value.
1094 static int ti_sci_cmd_put_clock(const struct ti_sci_handle *handle,
1095 u32 dev_id, u8 clk_id)
1097 return ti_sci_set_clock_state(handle, dev_id, clk_id, 0,
1098 MSG_CLOCK_SW_STATE_AUTO);
1102 * ti_sci_cmd_clk_is_auto() - Is the clock being auto managed
1103 * @handle: pointer to TI SCI handle
1104 * @dev_id: Device identifier this request is for
1105 * @clk_id: Clock identifier for the device for this request.
1106 * Each device has it's own set of clock inputs. This indexes
1107 * which clock input to modify.
1108 * @req_state: state indicating if the clock is auto managed
1110 * Return: 0 if all went well, else returns appropriate error value.
1112 static int ti_sci_cmd_clk_is_auto(const struct ti_sci_handle *handle,
1113 u32 dev_id, u8 clk_id, bool *req_state)
1121 ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id, &state, NULL);
1125 *req_state = (state == MSG_CLOCK_SW_STATE_AUTO);
1130 * ti_sci_cmd_clk_is_on() - Is the clock ON
1131 * @handle: pointer to TI SCI handle
1132 * @dev_id: Device identifier this request is for
1133 * @clk_id: Clock identifier for the device for this request.
1134 * Each device has it's own set of clock inputs. This indexes
1135 * which clock input to modify.
1136 * @req_state: state indicating if the clock is managed by us and enabled
1137 * @curr_state: state indicating if the clock is ready for operation
1139 * Return: 0 if all went well, else returns appropriate error value.
1141 static int ti_sci_cmd_clk_is_on(const struct ti_sci_handle *handle, u32 dev_id,
1142 u8 clk_id, bool *req_state, bool *curr_state)
1144 u8 c_state = 0, r_state = 0;
1147 if (!req_state && !curr_state)
1150 ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id,
1151 &r_state, &c_state);
1156 *req_state = (r_state == MSG_CLOCK_SW_STATE_REQ);
1158 *curr_state = (c_state == MSG_CLOCK_HW_STATE_READY);
1163 * ti_sci_cmd_clk_is_off() - Is the clock OFF
1164 * @handle: pointer to TI SCI handle
1165 * @dev_id: Device identifier this request is for
1166 * @clk_id: Clock identifier for the device for this request.
1167 * Each device has it's own set of clock inputs. This indexes
1168 * which clock input to modify.
1169 * @req_state: state indicating if the clock is managed by us and disabled
1170 * @curr_state: state indicating if the clock is NOT ready for operation
1172 * Return: 0 if all went well, else returns appropriate error value.
1174 static int ti_sci_cmd_clk_is_off(const struct ti_sci_handle *handle, u32 dev_id,
1175 u8 clk_id, bool *req_state, bool *curr_state)
1177 u8 c_state = 0, r_state = 0;
1180 if (!req_state && !curr_state)
1183 ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id,
1184 &r_state, &c_state);
1189 *req_state = (r_state == MSG_CLOCK_SW_STATE_UNREQ);
1191 *curr_state = (c_state == MSG_CLOCK_HW_STATE_NOT_READY);
1196 * ti_sci_cmd_clk_set_parent() - Set the clock source of a specific device clock
1197 * @handle: pointer to TI SCI handle
1198 * @dev_id: Device identifier this request is for
1199 * @clk_id: Clock identifier for the device for this request.
1200 * Each device has it's own set of clock inputs. This indexes
1201 * which clock input to modify.
1202 * @parent_id: Parent clock identifier to set
1204 * Return: 0 if all went well, else returns appropriate error value.
1206 static int ti_sci_cmd_clk_set_parent(const struct ti_sci_handle *handle,
1207 u32 dev_id, u8 clk_id, u8 parent_id)
1209 struct ti_sci_info *info;
1210 struct ti_sci_msg_req_set_clock_parent *req;
1211 struct ti_sci_msg_hdr *resp;
1212 struct ti_sci_xfer *xfer;
1217 return PTR_ERR(handle);
1221 info = handle_to_ti_sci_info(handle);
1224 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CLOCK_PARENT,
1225 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1226 sizeof(*req), sizeof(*resp));
1228 ret = PTR_ERR(xfer);
1229 dev_err(dev, "Message alloc failed(%d)\n", ret);
1232 req = (struct ti_sci_msg_req_set_clock_parent *)xfer->xfer_buf;
1233 req->dev_id = dev_id;
1234 req->clk_id = clk_id;
1235 req->parent_id = parent_id;
1237 ret = ti_sci_do_xfer(info, xfer);
1239 dev_err(dev, "Mbox send fail %d\n", ret);
1243 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
1245 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
1248 ti_sci_put_one_xfer(&info->minfo, xfer);
1254 * ti_sci_cmd_clk_get_parent() - Get current parent clock source
1255 * @handle: pointer to TI SCI handle
1256 * @dev_id: Device identifier this request is for
1257 * @clk_id: Clock identifier for the device for this request.
1258 * Each device has it's own set of clock inputs. This indexes
1259 * which clock input to modify.
1260 * @parent_id: Current clock parent
1262 * Return: 0 if all went well, else returns appropriate error value.
1264 static int ti_sci_cmd_clk_get_parent(const struct ti_sci_handle *handle,
1265 u32 dev_id, u8 clk_id, u8 *parent_id)
1267 struct ti_sci_info *info;
1268 struct ti_sci_msg_req_get_clock_parent *req;
1269 struct ti_sci_msg_resp_get_clock_parent *resp;
1270 struct ti_sci_xfer *xfer;
1275 return PTR_ERR(handle);
1276 if (!handle || !parent_id)
1279 info = handle_to_ti_sci_info(handle);
1282 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_CLOCK_PARENT,
1283 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1284 sizeof(*req), sizeof(*resp));
1286 ret = PTR_ERR(xfer);
1287 dev_err(dev, "Message alloc failed(%d)\n", ret);
1290 req = (struct ti_sci_msg_req_get_clock_parent *)xfer->xfer_buf;
1291 req->dev_id = dev_id;
1292 req->clk_id = clk_id;
1294 ret = ti_sci_do_xfer(info, xfer);
1296 dev_err(dev, "Mbox send fail %d\n", ret);
1300 resp = (struct ti_sci_msg_resp_get_clock_parent *)xfer->xfer_buf;
1302 if (!ti_sci_is_response_ack(resp))
1305 *parent_id = resp->parent_id;
1308 ti_sci_put_one_xfer(&info->minfo, xfer);
1314 * ti_sci_cmd_clk_get_num_parents() - Get num parents of the current clk source
1315 * @handle: pointer to TI SCI handle
1316 * @dev_id: Device identifier this request is for
1317 * @clk_id: Clock identifier for the device for this request.
1318 * Each device has it's own set of clock inputs. This indexes
1319 * which clock input to modify.
1320 * @num_parents: Returns he number of parents to the current clock.
1322 * Return: 0 if all went well, else returns appropriate error value.
1324 static int ti_sci_cmd_clk_get_num_parents(const struct ti_sci_handle *handle,
1325 u32 dev_id, u8 clk_id,
1328 struct ti_sci_info *info;
1329 struct ti_sci_msg_req_get_clock_num_parents *req;
1330 struct ti_sci_msg_resp_get_clock_num_parents *resp;
1331 struct ti_sci_xfer *xfer;
1336 return PTR_ERR(handle);
1337 if (!handle || !num_parents)
1340 info = handle_to_ti_sci_info(handle);
1343 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_NUM_CLOCK_PARENTS,
1344 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1345 sizeof(*req), sizeof(*resp));
1347 ret = PTR_ERR(xfer);
1348 dev_err(dev, "Message alloc failed(%d)\n", ret);
1351 req = (struct ti_sci_msg_req_get_clock_num_parents *)xfer->xfer_buf;
1352 req->dev_id = dev_id;
1353 req->clk_id = clk_id;
1355 ret = ti_sci_do_xfer(info, xfer);
1357 dev_err(dev, "Mbox send fail %d\n", ret);
1361 resp = (struct ti_sci_msg_resp_get_clock_num_parents *)xfer->xfer_buf;
1363 if (!ti_sci_is_response_ack(resp))
1366 *num_parents = resp->num_parents;
1369 ti_sci_put_one_xfer(&info->minfo, xfer);
1375 * ti_sci_cmd_clk_get_match_freq() - Find a good match for frequency
1376 * @handle: pointer to TI SCI handle
1377 * @dev_id: Device identifier this request is for
1378 * @clk_id: Clock identifier for the device for this request.
1379 * Each device has it's own set of clock inputs. This indexes
1380 * which clock input to modify.
1381 * @min_freq: The minimum allowable frequency in Hz. This is the minimum
1382 * allowable programmed frequency and does not account for clock
1383 * tolerances and jitter.
1384 * @target_freq: The target clock frequency in Hz. A frequency will be
1385 * processed as close to this target frequency as possible.
1386 * @max_freq: The maximum allowable frequency in Hz. This is the maximum
1387 * allowable programmed frequency and does not account for clock
1388 * tolerances and jitter.
1389 * @match_freq: Frequency match in Hz response.
1391 * Return: 0 if all went well, else returns appropriate error value.
1393 static int ti_sci_cmd_clk_get_match_freq(const struct ti_sci_handle *handle,
1394 u32 dev_id, u8 clk_id, u64 min_freq,
1395 u64 target_freq, u64 max_freq,
1398 struct ti_sci_info *info;
1399 struct ti_sci_msg_req_query_clock_freq *req;
1400 struct ti_sci_msg_resp_query_clock_freq *resp;
1401 struct ti_sci_xfer *xfer;
1406 return PTR_ERR(handle);
1407 if (!handle || !match_freq)
1410 info = handle_to_ti_sci_info(handle);
1413 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_QUERY_CLOCK_FREQ,
1414 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1415 sizeof(*req), sizeof(*resp));
1417 ret = PTR_ERR(xfer);
1418 dev_err(dev, "Message alloc failed(%d)\n", ret);
1421 req = (struct ti_sci_msg_req_query_clock_freq *)xfer->xfer_buf;
1422 req->dev_id = dev_id;
1423 req->clk_id = clk_id;
1424 req->min_freq_hz = min_freq;
1425 req->target_freq_hz = target_freq;
1426 req->max_freq_hz = max_freq;
1428 ret = ti_sci_do_xfer(info, xfer);
1430 dev_err(dev, "Mbox send fail %d\n", ret);
1434 resp = (struct ti_sci_msg_resp_query_clock_freq *)xfer->xfer_buf;
1436 if (!ti_sci_is_response_ack(resp))
1439 *match_freq = resp->freq_hz;
1442 ti_sci_put_one_xfer(&info->minfo, xfer);
1448 * ti_sci_cmd_clk_set_freq() - Set a frequency for clock
1449 * @handle: pointer to TI SCI handle
1450 * @dev_id: Device identifier this request is for
1451 * @clk_id: Clock identifier for the device for this request.
1452 * Each device has it's own set of clock inputs. This indexes
1453 * which clock input to modify.
1454 * @min_freq: The minimum allowable frequency in Hz. This is the minimum
1455 * allowable programmed frequency and does not account for clock
1456 * tolerances and jitter.
1457 * @target_freq: The target clock frequency in Hz. A frequency will be
1458 * processed as close to this target frequency as possible.
1459 * @max_freq: The maximum allowable frequency in Hz. This is the maximum
1460 * allowable programmed frequency and does not account for clock
1461 * tolerances and jitter.
1463 * Return: 0 if all went well, else returns appropriate error value.
1465 static int ti_sci_cmd_clk_set_freq(const struct ti_sci_handle *handle,
1466 u32 dev_id, u8 clk_id, u64 min_freq,
1467 u64 target_freq, u64 max_freq)
1469 struct ti_sci_info *info;
1470 struct ti_sci_msg_req_set_clock_freq *req;
1471 struct ti_sci_msg_hdr *resp;
1472 struct ti_sci_xfer *xfer;
1477 return PTR_ERR(handle);
1481 info = handle_to_ti_sci_info(handle);
1484 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CLOCK_FREQ,
1485 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1486 sizeof(*req), sizeof(*resp));
1488 ret = PTR_ERR(xfer);
1489 dev_err(dev, "Message alloc failed(%d)\n", ret);
1492 req = (struct ti_sci_msg_req_set_clock_freq *)xfer->xfer_buf;
1493 req->dev_id = dev_id;
1494 req->clk_id = clk_id;
1495 req->min_freq_hz = min_freq;
1496 req->target_freq_hz = target_freq;
1497 req->max_freq_hz = max_freq;
1499 ret = ti_sci_do_xfer(info, xfer);
1501 dev_err(dev, "Mbox send fail %d\n", ret);
1505 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
1507 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
1510 ti_sci_put_one_xfer(&info->minfo, xfer);
1516 * ti_sci_cmd_clk_get_freq() - Get current frequency
1517 * @handle: pointer to TI SCI handle
1518 * @dev_id: Device identifier this request is for
1519 * @clk_id: Clock identifier for the device for this request.
1520 * Each device has it's own set of clock inputs. This indexes
1521 * which clock input to modify.
1522 * @freq: Currently frequency in Hz
1524 * Return: 0 if all went well, else returns appropriate error value.
1526 static int ti_sci_cmd_clk_get_freq(const struct ti_sci_handle *handle,
1527 u32 dev_id, u8 clk_id, u64 *freq)
1529 struct ti_sci_info *info;
1530 struct ti_sci_msg_req_get_clock_freq *req;
1531 struct ti_sci_msg_resp_get_clock_freq *resp;
1532 struct ti_sci_xfer *xfer;
1537 return PTR_ERR(handle);
1538 if (!handle || !freq)
1541 info = handle_to_ti_sci_info(handle);
1544 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_CLOCK_FREQ,
1545 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1546 sizeof(*req), sizeof(*resp));
1548 ret = PTR_ERR(xfer);
1549 dev_err(dev, "Message alloc failed(%d)\n", ret);
1552 req = (struct ti_sci_msg_req_get_clock_freq *)xfer->xfer_buf;
1553 req->dev_id = dev_id;
1554 req->clk_id = clk_id;
1556 ret = ti_sci_do_xfer(info, xfer);
1558 dev_err(dev, "Mbox send fail %d\n", ret);
1562 resp = (struct ti_sci_msg_resp_get_clock_freq *)xfer->xfer_buf;
1564 if (!ti_sci_is_response_ack(resp))
1567 *freq = resp->freq_hz;
1570 ti_sci_put_one_xfer(&info->minfo, xfer);
1575 static int ti_sci_cmd_core_reboot(const struct ti_sci_handle *handle)
1577 struct ti_sci_info *info;
1578 struct ti_sci_msg_req_reboot *req;
1579 struct ti_sci_msg_hdr *resp;
1580 struct ti_sci_xfer *xfer;
1585 return PTR_ERR(handle);
1589 info = handle_to_ti_sci_info(handle);
1592 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SYS_RESET,
1593 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1594 sizeof(*req), sizeof(*resp));
1596 ret = PTR_ERR(xfer);
1597 dev_err(dev, "Message alloc failed(%d)\n", ret);
1600 req = (struct ti_sci_msg_req_reboot *)xfer->xfer_buf;
1602 ret = ti_sci_do_xfer(info, xfer);
1604 dev_err(dev, "Mbox send fail %d\n", ret);
1608 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
1610 if (!ti_sci_is_response_ack(resp))
1616 ti_sci_put_one_xfer(&info->minfo, xfer);
1621 static int ti_sci_get_resource_type(struct ti_sci_info *info, u16 dev_id,
1624 struct ti_sci_rm_type_map *rm_type_map = info->desc->rm_type_map;
1628 /* If map is not provided then assume dev_id is used as type */
1634 for (i = 0; rm_type_map[i].dev_id; i++) {
1635 if (rm_type_map[i].dev_id == dev_id) {
1636 *type = rm_type_map[i].type;
1649 * ti_sci_get_resource_range - Helper to get a range of resources assigned
1650 * to a host. Resource is uniquely identified by
1652 * @handle: Pointer to TISCI handle.
1653 * @dev_id: TISCI device ID.
1654 * @subtype: Resource assignment subtype that is being requested
1655 * from the given device.
1656 * @s_host: Host processor ID to which the resources are allocated
1657 * @range_start: Start index of the resource range
1658 * @range_num: Number of resources in the range
1660 * Return: 0 if all went fine, else return appropriate error.
1662 static int ti_sci_get_resource_range(const struct ti_sci_handle *handle,
1663 u32 dev_id, u8 subtype, u8 s_host,
1664 u16 *range_start, u16 *range_num)
1666 struct ti_sci_msg_resp_get_resource_range *resp;
1667 struct ti_sci_msg_req_get_resource_range *req;
1668 struct ti_sci_xfer *xfer;
1669 struct ti_sci_info *info;
1675 return PTR_ERR(handle);
1679 info = handle_to_ti_sci_info(handle);
1682 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_RESOURCE_RANGE,
1683 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1684 sizeof(*req), sizeof(*resp));
1686 ret = PTR_ERR(xfer);
1687 dev_err(dev, "Message alloc failed(%d)\n", ret);
1691 ret = ti_sci_get_resource_type(info, dev_id, &type);
1693 dev_err(dev, "rm type lookup failed for %u\n", dev_id);
1697 req = (struct ti_sci_msg_req_get_resource_range *)xfer->xfer_buf;
1698 req->secondary_host = s_host;
1699 req->type = type & MSG_RM_RESOURCE_TYPE_MASK;
1700 req->subtype = subtype & MSG_RM_RESOURCE_SUBTYPE_MASK;
1702 ret = ti_sci_do_xfer(info, xfer);
1704 dev_err(dev, "Mbox send fail %d\n", ret);
1708 resp = (struct ti_sci_msg_resp_get_resource_range *)xfer->xfer_buf;
1710 if (!ti_sci_is_response_ack(resp)) {
1712 } else if (!resp->range_start && !resp->range_num) {
1715 *range_start = resp->range_start;
1716 *range_num = resp->range_num;
1720 ti_sci_put_one_xfer(&info->minfo, xfer);
1726 * ti_sci_cmd_get_resource_range - Get a range of resources assigned to host
1727 * that is same as ti sci interface host.
1728 * @handle: Pointer to TISCI handle.
1729 * @dev_id: TISCI device ID.
1730 * @subtype: Resource assignment subtype that is being requested
1731 * from the given device.
1732 * @range_start: Start index of the resource range
1733 * @range_num: Number of resources in the range
1735 * Return: 0 if all went fine, else return appropriate error.
1737 static int ti_sci_cmd_get_resource_range(const struct ti_sci_handle *handle,
1738 u32 dev_id, u8 subtype,
1739 u16 *range_start, u16 *range_num)
1741 return ti_sci_get_resource_range(handle, dev_id, subtype,
1742 TI_SCI_IRQ_SECONDARY_HOST_INVALID,
1743 range_start, range_num);
1747 * ti_sci_cmd_get_resource_range_from_shost - Get a range of resources
1748 * assigned to a specified host.
1749 * @handle: Pointer to TISCI handle.
1750 * @dev_id: TISCI device ID.
1751 * @subtype: Resource assignment subtype that is being requested
1752 * from the given device.
1753 * @s_host: Host processor ID to which the resources are allocated
1754 * @range_start: Start index of the resource range
1755 * @range_num: Number of resources in the range
1757 * Return: 0 if all went fine, else return appropriate error.
1760 int ti_sci_cmd_get_resource_range_from_shost(const struct ti_sci_handle *handle,
1761 u32 dev_id, u8 subtype, u8 s_host,
1762 u16 *range_start, u16 *range_num)
1764 return ti_sci_get_resource_range(handle, dev_id, subtype, s_host,
1765 range_start, range_num);
1769 * ti_sci_manage_irq() - Helper api to configure/release the irq route between
1770 * the requested source and destination
1771 * @handle: Pointer to TISCI handle.
1772 * @valid_params: Bit fields defining the validity of certain params
1773 * @src_id: Device ID of the IRQ source
1774 * @src_index: IRQ source index within the source device
1775 * @dst_id: Device ID of the IRQ destination
1776 * @dst_host_irq: IRQ number of the destination device
1777 * @ia_id: Device ID of the IA, if the IRQ flows through this IA
1778 * @vint: Virtual interrupt to be used within the IA
1779 * @global_event: Global event number to be used for the requesting event
1780 * @vint_status_bit: Virtual interrupt status bit to be used for the event
1781 * @s_host: Secondary host ID to which the irq/event is being
1783 * @type: Request type irq set or release.
1785 * Return: 0 if all went fine, else return appropriate error.
1787 static int ti_sci_manage_irq(const struct ti_sci_handle *handle,
1788 u32 valid_params, u16 src_id, u16 src_index,
1789 u16 dst_id, u16 dst_host_irq, u16 ia_id, u16 vint,
1790 u16 global_event, u8 vint_status_bit, u8 s_host,
1793 struct ti_sci_msg_req_manage_irq *req;
1794 struct ti_sci_msg_hdr *resp;
1795 struct ti_sci_xfer *xfer;
1796 struct ti_sci_info *info;
1801 return PTR_ERR(handle);
1805 info = handle_to_ti_sci_info(handle);
1808 xfer = ti_sci_get_one_xfer(info, type, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1809 sizeof(*req), sizeof(*resp));
1811 ret = PTR_ERR(xfer);
1812 dev_err(dev, "Message alloc failed(%d)\n", ret);
1815 req = (struct ti_sci_msg_req_manage_irq *)xfer->xfer_buf;
1816 req->valid_params = valid_params;
1817 req->src_id = src_id;
1818 req->src_index = src_index;
1819 req->dst_id = dst_id;
1820 req->dst_host_irq = dst_host_irq;
1823 req->global_event = global_event;
1824 req->vint_status_bit = vint_status_bit;
1825 req->secondary_host = s_host;
1827 ret = ti_sci_do_xfer(info, xfer);
1829 dev_err(dev, "Mbox send fail %d\n", ret);
1833 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
1835 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
1838 ti_sci_put_one_xfer(&info->minfo, xfer);
1844 * ti_sci_set_irq() - Helper api to configure the irq route between the
1845 * requested source and destination
1846 * @handle: Pointer to TISCI handle.
1847 * @valid_params: Bit fields defining the validity of certain params
1848 * @src_id: Device ID of the IRQ source
1849 * @src_index: IRQ source index within the source device
1850 * @dst_id: Device ID of the IRQ destination
1851 * @dst_host_irq: IRQ number of the destination device
1852 * @ia_id: Device ID of the IA, if the IRQ flows through this IA
1853 * @vint: Virtual interrupt to be used within the IA
1854 * @global_event: Global event number to be used for the requesting event
1855 * @vint_status_bit: Virtual interrupt status bit to be used for the event
1856 * @s_host: Secondary host ID to which the irq/event is being
1859 * Return: 0 if all went fine, else return appropriate error.
1861 static int ti_sci_set_irq(const struct ti_sci_handle *handle, u32 valid_params,
1862 u16 src_id, u16 src_index, u16 dst_id,
1863 u16 dst_host_irq, u16 ia_id, u16 vint,
1864 u16 global_event, u8 vint_status_bit, u8 s_host)
1866 pr_debug("%s: IRQ set with valid_params = 0x%x from src = %d, index = %d, to dst = %d, irq = %d,via ia_id = %d, vint = %d, global event = %d,status_bit = %d\n",
1867 __func__, valid_params, src_id, src_index,
1868 dst_id, dst_host_irq, ia_id, vint, global_event,
1871 return ti_sci_manage_irq(handle, valid_params, src_id, src_index,
1872 dst_id, dst_host_irq, ia_id, vint,
1873 global_event, vint_status_bit, s_host,
1874 TI_SCI_MSG_SET_IRQ);
1878 * ti_sci_free_irq() - Helper api to free the irq route between the
1879 * requested source and destination
1880 * @handle: Pointer to TISCI handle.
1881 * @valid_params: Bit fields defining the validity of certain params
1882 * @src_id: Device ID of the IRQ source
1883 * @src_index: IRQ source index within the source device
1884 * @dst_id: Device ID of the IRQ destination
1885 * @dst_host_irq: IRQ number of the destination device
1886 * @ia_id: Device ID of the IA, if the IRQ flows through this IA
1887 * @vint: Virtual interrupt to be used within the IA
1888 * @global_event: Global event number to be used for the requesting event
1889 * @vint_status_bit: Virtual interrupt status bit to be used for the event
1890 * @s_host: Secondary host ID to which the irq/event is being
1893 * Return: 0 if all went fine, else return appropriate error.
1895 static int ti_sci_free_irq(const struct ti_sci_handle *handle, u32 valid_params,
1896 u16 src_id, u16 src_index, u16 dst_id,
1897 u16 dst_host_irq, u16 ia_id, u16 vint,
1898 u16 global_event, u8 vint_status_bit, u8 s_host)
1900 pr_debug("%s: IRQ release with valid_params = 0x%x from src = %d, index = %d, to dst = %d, irq = %d,via ia_id = %d, vint = %d, global event = %d,status_bit = %d\n",
1901 __func__, valid_params, src_id, src_index,
1902 dst_id, dst_host_irq, ia_id, vint, global_event,
1905 return ti_sci_manage_irq(handle, valid_params, src_id, src_index,
1906 dst_id, dst_host_irq, ia_id, vint,
1907 global_event, vint_status_bit, s_host,
1908 TI_SCI_MSG_FREE_IRQ);
1912 * ti_sci_cmd_set_irq() - Configure a host irq route between the requested
1913 * source and destination.
1914 * @handle: Pointer to TISCI handle.
1915 * @src_id: Device ID of the IRQ source
1916 * @src_index: IRQ source index within the source device
1917 * @dst_id: Device ID of the IRQ destination
1918 * @dst_host_irq: IRQ number of the destination device
1919 * @vint_irq: Boolean specifying if this interrupt belongs to
1920 * Interrupt Aggregator.
1922 * Return: 0 if all went fine, else return appropriate error.
1924 static int ti_sci_cmd_set_irq(const struct ti_sci_handle *handle, u16 src_id,
1925 u16 src_index, u16 dst_id, u16 dst_host_irq)
1927 u32 valid_params = MSG_FLAG_DST_ID_VALID | MSG_FLAG_DST_HOST_IRQ_VALID;
1929 return ti_sci_set_irq(handle, valid_params, src_id, src_index, dst_id,
1930 dst_host_irq, 0, 0, 0, 0, 0);
1934 * ti_sci_cmd_set_event_map() - Configure an event based irq route between the
1935 * requested source and Interrupt Aggregator.
1936 * @handle: Pointer to TISCI handle.
1937 * @src_id: Device ID of the IRQ source
1938 * @src_index: IRQ source index within the source device
1939 * @ia_id: Device ID of the IA, if the IRQ flows through this IA
1940 * @vint: Virtual interrupt to be used within the IA
1941 * @global_event: Global event number to be used for the requesting event
1942 * @vint_status_bit: Virtual interrupt status bit to be used for the event
1944 * Return: 0 if all went fine, else return appropriate error.
1946 static int ti_sci_cmd_set_event_map(const struct ti_sci_handle *handle,
1947 u16 src_id, u16 src_index, u16 ia_id,
1948 u16 vint, u16 global_event,
1951 u32 valid_params = MSG_FLAG_IA_ID_VALID | MSG_FLAG_VINT_VALID |
1952 MSG_FLAG_GLB_EVNT_VALID |
1953 MSG_FLAG_VINT_STS_BIT_VALID;
1955 return ti_sci_set_irq(handle, valid_params, src_id, src_index, 0, 0,
1956 ia_id, vint, global_event, vint_status_bit, 0);
1960 * ti_sci_cmd_free_irq() - Free a host irq route between the between the
1961 * requested source and destination.
1962 * @handle: Pointer to TISCI handle.
1963 * @src_id: Device ID of the IRQ source
1964 * @src_index: IRQ source index within the source device
1965 * @dst_id: Device ID of the IRQ destination
1966 * @dst_host_irq: IRQ number of the destination device
1967 * @vint_irq: Boolean specifying if this interrupt belongs to
1968 * Interrupt Aggregator.
1970 * Return: 0 if all went fine, else return appropriate error.
1972 static int ti_sci_cmd_free_irq(const struct ti_sci_handle *handle, u16 src_id,
1973 u16 src_index, u16 dst_id, u16 dst_host_irq)
1975 u32 valid_params = MSG_FLAG_DST_ID_VALID | MSG_FLAG_DST_HOST_IRQ_VALID;
1977 return ti_sci_free_irq(handle, valid_params, src_id, src_index, dst_id,
1978 dst_host_irq, 0, 0, 0, 0, 0);
1982 * ti_sci_cmd_free_event_map() - Free an event map between the requested source
1983 * and Interrupt Aggregator.
1984 * @handle: Pointer to TISCI handle.
1985 * @src_id: Device ID of the IRQ source
1986 * @src_index: IRQ source index within the source device
1987 * @ia_id: Device ID of the IA, if the IRQ flows through this IA
1988 * @vint: Virtual interrupt to be used within the IA
1989 * @global_event: Global event number to be used for the requesting event
1990 * @vint_status_bit: Virtual interrupt status bit to be used for the event
1992 * Return: 0 if all went fine, else return appropriate error.
1994 static int ti_sci_cmd_free_event_map(const struct ti_sci_handle *handle,
1995 u16 src_id, u16 src_index, u16 ia_id,
1996 u16 vint, u16 global_event,
1999 u32 valid_params = MSG_FLAG_IA_ID_VALID |
2000 MSG_FLAG_VINT_VALID | MSG_FLAG_GLB_EVNT_VALID |
2001 MSG_FLAG_VINT_STS_BIT_VALID;
2003 return ti_sci_free_irq(handle, valid_params, src_id, src_index, 0, 0,
2004 ia_id, vint, global_event, vint_status_bit, 0);
2008 * ti_sci_cmd_ring_config() - configure RA ring
2009 * @handle: Pointer to TI SCI handle.
2010 * @valid_params: Bitfield defining validity of ring configuration
2012 * @nav_id: Device ID of Navigator Subsystem from which the ring is
2014 * @index: Ring index
2015 * @addr_lo: The ring base address lo 32 bits
2016 * @addr_hi: The ring base address hi 32 bits
2017 * @count: Number of ring elements
2018 * @mode: The mode of the ring
2019 * @size: The ring element size.
2020 * @order_id: Specifies the ring's bus order ID
2022 * Return: 0 if all went well, else returns appropriate error value.
2024 * See @ti_sci_msg_rm_ring_cfg_req for more info.
2026 static int ti_sci_cmd_ring_config(const struct ti_sci_handle *handle,
2027 u32 valid_params, u16 nav_id, u16 index,
2028 u32 addr_lo, u32 addr_hi, u32 count,
2029 u8 mode, u8 size, u8 order_id)
2031 struct ti_sci_msg_rm_ring_cfg_req *req;
2032 struct ti_sci_msg_hdr *resp;
2033 struct ti_sci_xfer *xfer;
2034 struct ti_sci_info *info;
2038 if (IS_ERR_OR_NULL(handle))
2041 info = handle_to_ti_sci_info(handle);
2044 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_RING_CFG,
2045 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2046 sizeof(*req), sizeof(*resp));
2048 ret = PTR_ERR(xfer);
2049 dev_err(dev, "RM_RA:Message config failed(%d)\n", ret);
2052 req = (struct ti_sci_msg_rm_ring_cfg_req *)xfer->xfer_buf;
2053 req->valid_params = valid_params;
2054 req->nav_id = nav_id;
2056 req->addr_lo = addr_lo;
2057 req->addr_hi = addr_hi;
2061 req->order_id = order_id;
2063 ret = ti_sci_do_xfer(info, xfer);
2065 dev_err(dev, "RM_RA:Mbox config send fail %d\n", ret);
2069 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
2070 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
2073 ti_sci_put_one_xfer(&info->minfo, xfer);
2074 dev_dbg(dev, "RM_RA:config ring %u ret:%d\n", index, ret);
2079 * ti_sci_cmd_ring_get_config() - get RA ring configuration
2080 * @handle: Pointer to TI SCI handle.
2081 * @nav_id: Device ID of Navigator Subsystem from which the ring is
2083 * @index: Ring index
2084 * @addr_lo: Returns ring's base address lo 32 bits
2085 * @addr_hi: Returns ring's base address hi 32 bits
2086 * @count: Returns number of ring elements
2087 * @mode: Returns mode of the ring
2088 * @size: Returns ring element size
2089 * @order_id: Returns ring's bus order ID
2091 * Return: 0 if all went well, else returns appropriate error value.
2093 * See @ti_sci_msg_rm_ring_get_cfg_req for more info.
2095 static int ti_sci_cmd_ring_get_config(const struct ti_sci_handle *handle,
2096 u32 nav_id, u32 index, u8 *mode,
2097 u32 *addr_lo, u32 *addr_hi,
2098 u32 *count, u8 *size, u8 *order_id)
2100 struct ti_sci_msg_rm_ring_get_cfg_resp *resp;
2101 struct ti_sci_msg_rm_ring_get_cfg_req *req;
2102 struct ti_sci_xfer *xfer;
2103 struct ti_sci_info *info;
2107 if (IS_ERR_OR_NULL(handle))
2110 info = handle_to_ti_sci_info(handle);
2113 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_RING_GET_CFG,
2114 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2115 sizeof(*req), sizeof(*resp));
2117 ret = PTR_ERR(xfer);
2119 "RM_RA:Message get config failed(%d)\n", ret);
2122 req = (struct ti_sci_msg_rm_ring_get_cfg_req *)xfer->xfer_buf;
2123 req->nav_id = nav_id;
2126 ret = ti_sci_do_xfer(info, xfer);
2128 dev_err(dev, "RM_RA:Mbox get config send fail %d\n", ret);
2132 resp = (struct ti_sci_msg_rm_ring_get_cfg_resp *)xfer->xfer_buf;
2134 if (!ti_sci_is_response_ack(resp)) {
2140 *addr_lo = resp->addr_lo;
2142 *addr_hi = resp->addr_hi;
2144 *count = resp->count;
2148 *order_id = resp->order_id;
2152 ti_sci_put_one_xfer(&info->minfo, xfer);
2153 dev_dbg(dev, "RM_RA:get config ring %u ret:%d\n", index, ret);
2158 * ti_sci_cmd_rm_psil_pair() - Pair PSI-L source to destination thread
2159 * @handle: Pointer to TI SCI handle.
2160 * @nav_id: Device ID of Navigator Subsystem which should be used for
2162 * @src_thread: Source PSI-L thread ID
2163 * @dst_thread: Destination PSI-L thread ID
2165 * Return: 0 if all went well, else returns appropriate error value.
2167 static int ti_sci_cmd_rm_psil_pair(const struct ti_sci_handle *handle,
2168 u32 nav_id, u32 src_thread, u32 dst_thread)
2170 struct ti_sci_msg_psil_pair *req;
2171 struct ti_sci_msg_hdr *resp;
2172 struct ti_sci_xfer *xfer;
2173 struct ti_sci_info *info;
2178 return PTR_ERR(handle);
2182 info = handle_to_ti_sci_info(handle);
2185 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_PSIL_PAIR,
2186 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2187 sizeof(*req), sizeof(*resp));
2189 ret = PTR_ERR(xfer);
2190 dev_err(dev, "RM_PSIL:Message reconfig failed(%d)\n", ret);
2193 req = (struct ti_sci_msg_psil_pair *)xfer->xfer_buf;
2194 req->nav_id = nav_id;
2195 req->src_thread = src_thread;
2196 req->dst_thread = dst_thread;
2198 ret = ti_sci_do_xfer(info, xfer);
2200 dev_err(dev, "RM_PSIL:Mbox send fail %d\n", ret);
2204 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
2205 ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
2208 ti_sci_put_one_xfer(&info->minfo, xfer);
2214 * ti_sci_cmd_rm_psil_unpair() - Unpair PSI-L source from destination thread
2215 * @handle: Pointer to TI SCI handle.
2216 * @nav_id: Device ID of Navigator Subsystem which should be used for
2218 * @src_thread: Source PSI-L thread ID
2219 * @dst_thread: Destination PSI-L thread ID
2221 * Return: 0 if all went well, else returns appropriate error value.
2223 static int ti_sci_cmd_rm_psil_unpair(const struct ti_sci_handle *handle,
2224 u32 nav_id, u32 src_thread, u32 dst_thread)
2226 struct ti_sci_msg_psil_unpair *req;
2227 struct ti_sci_msg_hdr *resp;
2228 struct ti_sci_xfer *xfer;
2229 struct ti_sci_info *info;
2234 return PTR_ERR(handle);
2238 info = handle_to_ti_sci_info(handle);
2241 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_PSIL_UNPAIR,
2242 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2243 sizeof(*req), sizeof(*resp));
2245 ret = PTR_ERR(xfer);
2246 dev_err(dev, "RM_PSIL:Message reconfig failed(%d)\n", ret);
2249 req = (struct ti_sci_msg_psil_unpair *)xfer->xfer_buf;
2250 req->nav_id = nav_id;
2251 req->src_thread = src_thread;
2252 req->dst_thread = dst_thread;
2254 ret = ti_sci_do_xfer(info, xfer);
2256 dev_err(dev, "RM_PSIL:Mbox send fail %d\n", ret);
2260 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
2261 ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
2264 ti_sci_put_one_xfer(&info->minfo, xfer);
2270 * ti_sci_cmd_rm_udmap_tx_ch_cfg() - Configure a UDMAP TX channel
2271 * @handle: Pointer to TI SCI handle.
2272 * @params: Pointer to ti_sci_msg_rm_udmap_tx_ch_cfg TX channel config
2275 * Return: 0 if all went well, else returns appropriate error value.
2277 * See @ti_sci_msg_rm_udmap_tx_ch_cfg and @ti_sci_msg_rm_udmap_tx_ch_cfg_req for
2280 static int ti_sci_cmd_rm_udmap_tx_ch_cfg(const struct ti_sci_handle *handle,
2281 const struct ti_sci_msg_rm_udmap_tx_ch_cfg *params)
2283 struct ti_sci_msg_rm_udmap_tx_ch_cfg_req *req;
2284 struct ti_sci_msg_hdr *resp;
2285 struct ti_sci_xfer *xfer;
2286 struct ti_sci_info *info;
2290 if (IS_ERR_OR_NULL(handle))
2293 info = handle_to_ti_sci_info(handle);
2296 xfer = ti_sci_get_one_xfer(info, TISCI_MSG_RM_UDMAP_TX_CH_CFG,
2297 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2298 sizeof(*req), sizeof(*resp));
2300 ret = PTR_ERR(xfer);
2301 dev_err(dev, "Message TX_CH_CFG alloc failed(%d)\n", ret);
2304 req = (struct ti_sci_msg_rm_udmap_tx_ch_cfg_req *)xfer->xfer_buf;
2305 req->valid_params = params->valid_params;
2306 req->nav_id = params->nav_id;
2307 req->index = params->index;
2308 req->tx_pause_on_err = params->tx_pause_on_err;
2309 req->tx_filt_einfo = params->tx_filt_einfo;
2310 req->tx_filt_pswords = params->tx_filt_pswords;
2311 req->tx_atype = params->tx_atype;
2312 req->tx_chan_type = params->tx_chan_type;
2313 req->tx_supr_tdpkt = params->tx_supr_tdpkt;
2314 req->tx_fetch_size = params->tx_fetch_size;
2315 req->tx_credit_count = params->tx_credit_count;
2316 req->txcq_qnum = params->txcq_qnum;
2317 req->tx_priority = params->tx_priority;
2318 req->tx_qos = params->tx_qos;
2319 req->tx_orderid = params->tx_orderid;
2320 req->fdepth = params->fdepth;
2321 req->tx_sched_priority = params->tx_sched_priority;
2322 req->tx_burst_size = params->tx_burst_size;
2324 ret = ti_sci_do_xfer(info, xfer);
2326 dev_err(dev, "Mbox send TX_CH_CFG fail %d\n", ret);
2330 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
2331 ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
2334 ti_sci_put_one_xfer(&info->minfo, xfer);
2335 dev_dbg(dev, "TX_CH_CFG: chn %u ret:%u\n", params->index, ret);
2340 * ti_sci_cmd_rm_udmap_rx_ch_cfg() - Configure a UDMAP RX channel
2341 * @handle: Pointer to TI SCI handle.
2342 * @params: Pointer to ti_sci_msg_rm_udmap_rx_ch_cfg RX channel config
2345 * Return: 0 if all went well, else returns appropriate error value.
2347 * See @ti_sci_msg_rm_udmap_rx_ch_cfg and @ti_sci_msg_rm_udmap_rx_ch_cfg_req for
2350 static int ti_sci_cmd_rm_udmap_rx_ch_cfg(const struct ti_sci_handle *handle,
2351 const struct ti_sci_msg_rm_udmap_rx_ch_cfg *params)
2353 struct ti_sci_msg_rm_udmap_rx_ch_cfg_req *req;
2354 struct ti_sci_msg_hdr *resp;
2355 struct ti_sci_xfer *xfer;
2356 struct ti_sci_info *info;
2360 if (IS_ERR_OR_NULL(handle))
2363 info = handle_to_ti_sci_info(handle);
2366 xfer = ti_sci_get_one_xfer(info, TISCI_MSG_RM_UDMAP_RX_CH_CFG,
2367 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2368 sizeof(*req), sizeof(*resp));
2370 ret = PTR_ERR(xfer);
2371 dev_err(dev, "Message RX_CH_CFG alloc failed(%d)\n", ret);
2374 req = (struct ti_sci_msg_rm_udmap_rx_ch_cfg_req *)xfer->xfer_buf;
2375 req->valid_params = params->valid_params;
2376 req->nav_id = params->nav_id;
2377 req->index = params->index;
2378 req->rx_fetch_size = params->rx_fetch_size;
2379 req->rxcq_qnum = params->rxcq_qnum;
2380 req->rx_priority = params->rx_priority;
2381 req->rx_qos = params->rx_qos;
2382 req->rx_orderid = params->rx_orderid;
2383 req->rx_sched_priority = params->rx_sched_priority;
2384 req->flowid_start = params->flowid_start;
2385 req->flowid_cnt = params->flowid_cnt;
2386 req->rx_pause_on_err = params->rx_pause_on_err;
2387 req->rx_atype = params->rx_atype;
2388 req->rx_chan_type = params->rx_chan_type;
2389 req->rx_ignore_short = params->rx_ignore_short;
2390 req->rx_ignore_long = params->rx_ignore_long;
2391 req->rx_burst_size = params->rx_burst_size;
2393 ret = ti_sci_do_xfer(info, xfer);
2395 dev_err(dev, "Mbox send RX_CH_CFG fail %d\n", ret);
2399 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
2400 ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
2403 ti_sci_put_one_xfer(&info->minfo, xfer);
2404 dev_dbg(dev, "RX_CH_CFG: chn %u ret:%d\n", params->index, ret);
2409 * ti_sci_cmd_rm_udmap_rx_flow_cfg() - Configure UDMAP RX FLOW
2410 * @handle: Pointer to TI SCI handle.
2411 * @params: Pointer to ti_sci_msg_rm_udmap_flow_cfg RX FLOW config
2414 * Return: 0 if all went well, else returns appropriate error value.
2416 * See @ti_sci_msg_rm_udmap_flow_cfg and @ti_sci_msg_rm_udmap_flow_cfg_req for
2419 static int ti_sci_cmd_rm_udmap_rx_flow_cfg(const struct ti_sci_handle *handle,
2420 const struct ti_sci_msg_rm_udmap_flow_cfg *params)
2422 struct ti_sci_msg_rm_udmap_flow_cfg_req *req;
2423 struct ti_sci_msg_hdr *resp;
2424 struct ti_sci_xfer *xfer;
2425 struct ti_sci_info *info;
2429 if (IS_ERR_OR_NULL(handle))
2432 info = handle_to_ti_sci_info(handle);
2435 xfer = ti_sci_get_one_xfer(info, TISCI_MSG_RM_UDMAP_FLOW_CFG,
2436 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2437 sizeof(*req), sizeof(*resp));
2439 ret = PTR_ERR(xfer);
2440 dev_err(dev, "RX_FL_CFG: Message alloc failed(%d)\n", ret);
2443 req = (struct ti_sci_msg_rm_udmap_flow_cfg_req *)xfer->xfer_buf;
2444 req->valid_params = params->valid_params;
2445 req->nav_id = params->nav_id;
2446 req->flow_index = params->flow_index;
2447 req->rx_einfo_present = params->rx_einfo_present;
2448 req->rx_psinfo_present = params->rx_psinfo_present;
2449 req->rx_error_handling = params->rx_error_handling;
2450 req->rx_desc_type = params->rx_desc_type;
2451 req->rx_sop_offset = params->rx_sop_offset;
2452 req->rx_dest_qnum = params->rx_dest_qnum;
2453 req->rx_src_tag_hi = params->rx_src_tag_hi;
2454 req->rx_src_tag_lo = params->rx_src_tag_lo;
2455 req->rx_dest_tag_hi = params->rx_dest_tag_hi;
2456 req->rx_dest_tag_lo = params->rx_dest_tag_lo;
2457 req->rx_src_tag_hi_sel = params->rx_src_tag_hi_sel;
2458 req->rx_src_tag_lo_sel = params->rx_src_tag_lo_sel;
2459 req->rx_dest_tag_hi_sel = params->rx_dest_tag_hi_sel;
2460 req->rx_dest_tag_lo_sel = params->rx_dest_tag_lo_sel;
2461 req->rx_fdq0_sz0_qnum = params->rx_fdq0_sz0_qnum;
2462 req->rx_fdq1_qnum = params->rx_fdq1_qnum;
2463 req->rx_fdq2_qnum = params->rx_fdq2_qnum;
2464 req->rx_fdq3_qnum = params->rx_fdq3_qnum;
2465 req->rx_ps_location = params->rx_ps_location;
2467 ret = ti_sci_do_xfer(info, xfer);
2469 dev_err(dev, "RX_FL_CFG: Mbox send fail %d\n", ret);
2473 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
2474 ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
2477 ti_sci_put_one_xfer(&info->minfo, xfer);
2478 dev_dbg(info->dev, "RX_FL_CFG: %u ret:%d\n", params->flow_index, ret);
2483 * ti_sci_cmd_proc_request() - Command to request a physical processor control
2484 * @handle: Pointer to TI SCI handle
2485 * @proc_id: Processor ID this request is for
2487 * Return: 0 if all went well, else returns appropriate error value.
2489 static int ti_sci_cmd_proc_request(const struct ti_sci_handle *handle,
2492 struct ti_sci_msg_req_proc_request *req;
2493 struct ti_sci_msg_hdr *resp;
2494 struct ti_sci_info *info;
2495 struct ti_sci_xfer *xfer;
2502 return PTR_ERR(handle);
2504 info = handle_to_ti_sci_info(handle);
2507 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_PROC_REQUEST,
2508 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2509 sizeof(*req), sizeof(*resp));
2511 ret = PTR_ERR(xfer);
2512 dev_err(dev, "Message alloc failed(%d)\n", ret);
2515 req = (struct ti_sci_msg_req_proc_request *)xfer->xfer_buf;
2516 req->processor_id = proc_id;
2518 ret = ti_sci_do_xfer(info, xfer);
2520 dev_err(dev, "Mbox send fail %d\n", ret);
2524 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
2526 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
2529 ti_sci_put_one_xfer(&info->minfo, xfer);
2535 * ti_sci_cmd_proc_release() - Command to release a physical processor control
2536 * @handle: Pointer to TI SCI handle
2537 * @proc_id: Processor ID this request is for
2539 * Return: 0 if all went well, else returns appropriate error value.
2541 static int ti_sci_cmd_proc_release(const struct ti_sci_handle *handle,
2544 struct ti_sci_msg_req_proc_release *req;
2545 struct ti_sci_msg_hdr *resp;
2546 struct ti_sci_info *info;
2547 struct ti_sci_xfer *xfer;
2554 return PTR_ERR(handle);
2556 info = handle_to_ti_sci_info(handle);
2559 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_PROC_RELEASE,
2560 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2561 sizeof(*req), sizeof(*resp));
2563 ret = PTR_ERR(xfer);
2564 dev_err(dev, "Message alloc failed(%d)\n", ret);
2567 req = (struct ti_sci_msg_req_proc_release *)xfer->xfer_buf;
2568 req->processor_id = proc_id;
2570 ret = ti_sci_do_xfer(info, xfer);
2572 dev_err(dev, "Mbox send fail %d\n", ret);
2576 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
2578 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
2581 ti_sci_put_one_xfer(&info->minfo, xfer);
2587 * ti_sci_cmd_proc_handover() - Command to handover a physical processor
2588 * control to a host in the processor's access
2590 * @handle: Pointer to TI SCI handle
2591 * @proc_id: Processor ID this request is for
2592 * @host_id: Host ID to get the control of the processor
2594 * Return: 0 if all went well, else returns appropriate error value.
2596 static int ti_sci_cmd_proc_handover(const struct ti_sci_handle *handle,
2597 u8 proc_id, u8 host_id)
2599 struct ti_sci_msg_req_proc_handover *req;
2600 struct ti_sci_msg_hdr *resp;
2601 struct ti_sci_info *info;
2602 struct ti_sci_xfer *xfer;
2609 return PTR_ERR(handle);
2611 info = handle_to_ti_sci_info(handle);
2614 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_PROC_HANDOVER,
2615 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2616 sizeof(*req), sizeof(*resp));
2618 ret = PTR_ERR(xfer);
2619 dev_err(dev, "Message alloc failed(%d)\n", ret);
2622 req = (struct ti_sci_msg_req_proc_handover *)xfer->xfer_buf;
2623 req->processor_id = proc_id;
2624 req->host_id = host_id;
2626 ret = ti_sci_do_xfer(info, xfer);
2628 dev_err(dev, "Mbox send fail %d\n", ret);
2632 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
2634 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
2637 ti_sci_put_one_xfer(&info->minfo, xfer);
2643 * ti_sci_cmd_proc_set_config() - Command to set the processor boot
2644 * configuration flags
2645 * @handle: Pointer to TI SCI handle
2646 * @proc_id: Processor ID this request is for
2647 * @config_flags_set: Configuration flags to be set
2648 * @config_flags_clear: Configuration flags to be cleared.
2650 * Return: 0 if all went well, else returns appropriate error value.
2652 static int ti_sci_cmd_proc_set_config(const struct ti_sci_handle *handle,
2653 u8 proc_id, u64 bootvector,
2654 u32 config_flags_set,
2655 u32 config_flags_clear)
2657 struct ti_sci_msg_req_set_config *req;
2658 struct ti_sci_msg_hdr *resp;
2659 struct ti_sci_info *info;
2660 struct ti_sci_xfer *xfer;
2667 return PTR_ERR(handle);
2669 info = handle_to_ti_sci_info(handle);
2672 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CONFIG,
2673 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2674 sizeof(*req), sizeof(*resp));
2676 ret = PTR_ERR(xfer);
2677 dev_err(dev, "Message alloc failed(%d)\n", ret);
2680 req = (struct ti_sci_msg_req_set_config *)xfer->xfer_buf;
2681 req->processor_id = proc_id;
2682 req->bootvector_low = bootvector & TI_SCI_ADDR_LOW_MASK;
2683 req->bootvector_high = (bootvector & TI_SCI_ADDR_HIGH_MASK) >>
2684 TI_SCI_ADDR_HIGH_SHIFT;
2685 req->config_flags_set = config_flags_set;
2686 req->config_flags_clear = config_flags_clear;
2688 ret = ti_sci_do_xfer(info, xfer);
2690 dev_err(dev, "Mbox send fail %d\n", ret);
2694 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
2696 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
2699 ti_sci_put_one_xfer(&info->minfo, xfer);
2705 * ti_sci_cmd_proc_set_control() - Command to set the processor boot
2707 * @handle: Pointer to TI SCI handle
2708 * @proc_id: Processor ID this request is for
2709 * @control_flags_set: Control flags to be set
2710 * @control_flags_clear: Control flags to be cleared
2712 * Return: 0 if all went well, else returns appropriate error value.
2714 static int ti_sci_cmd_proc_set_control(const struct ti_sci_handle *handle,
2715 u8 proc_id, u32 control_flags_set,
2716 u32 control_flags_clear)
2718 struct ti_sci_msg_req_set_ctrl *req;
2719 struct ti_sci_msg_hdr *resp;
2720 struct ti_sci_info *info;
2721 struct ti_sci_xfer *xfer;
2728 return PTR_ERR(handle);
2730 info = handle_to_ti_sci_info(handle);
2733 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CTRL,
2734 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2735 sizeof(*req), sizeof(*resp));
2737 ret = PTR_ERR(xfer);
2738 dev_err(dev, "Message alloc failed(%d)\n", ret);
2741 req = (struct ti_sci_msg_req_set_ctrl *)xfer->xfer_buf;
2742 req->processor_id = proc_id;
2743 req->control_flags_set = control_flags_set;
2744 req->control_flags_clear = control_flags_clear;
2746 ret = ti_sci_do_xfer(info, xfer);
2748 dev_err(dev, "Mbox send fail %d\n", ret);
2752 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
2754 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
2757 ti_sci_put_one_xfer(&info->minfo, xfer);
2763 * ti_sci_cmd_get_boot_status() - Command to get the processor boot status
2764 * @handle: Pointer to TI SCI handle
2765 * @proc_id: Processor ID this request is for
2767 * Return: 0 if all went well, else returns appropriate error value.
2769 static int ti_sci_cmd_proc_get_status(const struct ti_sci_handle *handle,
2770 u8 proc_id, u64 *bv, u32 *cfg_flags,
2771 u32 *ctrl_flags, u32 *sts_flags)
2773 struct ti_sci_msg_resp_get_status *resp;
2774 struct ti_sci_msg_req_get_status *req;
2775 struct ti_sci_info *info;
2776 struct ti_sci_xfer *xfer;
2783 return PTR_ERR(handle);
2785 info = handle_to_ti_sci_info(handle);
2788 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_STATUS,
2789 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2790 sizeof(*req), sizeof(*resp));
2792 ret = PTR_ERR(xfer);
2793 dev_err(dev, "Message alloc failed(%d)\n", ret);
2796 req = (struct ti_sci_msg_req_get_status *)xfer->xfer_buf;
2797 req->processor_id = proc_id;
2799 ret = ti_sci_do_xfer(info, xfer);
2801 dev_err(dev, "Mbox send fail %d\n", ret);
2805 resp = (struct ti_sci_msg_resp_get_status *)xfer->tx_message.buf;
2807 if (!ti_sci_is_response_ack(resp)) {
2810 *bv = (resp->bootvector_low & TI_SCI_ADDR_LOW_MASK) |
2811 (((u64)resp->bootvector_high << TI_SCI_ADDR_HIGH_SHIFT) &
2812 TI_SCI_ADDR_HIGH_MASK);
2813 *cfg_flags = resp->config_flags;
2814 *ctrl_flags = resp->control_flags;
2815 *sts_flags = resp->status_flags;
2819 ti_sci_put_one_xfer(&info->minfo, xfer);
2825 * ti_sci_setup_ops() - Setup the operations structures
2826 * @info: pointer to TISCI pointer
2828 static void ti_sci_setup_ops(struct ti_sci_info *info)
2830 struct ti_sci_ops *ops = &info->handle.ops;
2831 struct ti_sci_core_ops *core_ops = &ops->core_ops;
2832 struct ti_sci_dev_ops *dops = &ops->dev_ops;
2833 struct ti_sci_clk_ops *cops = &ops->clk_ops;
2834 struct ti_sci_rm_core_ops *rm_core_ops = &ops->rm_core_ops;
2835 struct ti_sci_rm_irq_ops *iops = &ops->rm_irq_ops;
2836 struct ti_sci_rm_ringacc_ops *rops = &ops->rm_ring_ops;
2837 struct ti_sci_rm_psil_ops *psilops = &ops->rm_psil_ops;
2838 struct ti_sci_rm_udmap_ops *udmap_ops = &ops->rm_udmap_ops;
2839 struct ti_sci_proc_ops *pops = &ops->proc_ops;
2841 core_ops->reboot_device = ti_sci_cmd_core_reboot;
2843 dops->get_device = ti_sci_cmd_get_device;
2844 dops->idle_device = ti_sci_cmd_idle_device;
2845 dops->put_device = ti_sci_cmd_put_device;
2847 dops->is_valid = ti_sci_cmd_dev_is_valid;
2848 dops->get_context_loss_count = ti_sci_cmd_dev_get_clcnt;
2849 dops->is_idle = ti_sci_cmd_dev_is_idle;
2850 dops->is_stop = ti_sci_cmd_dev_is_stop;
2851 dops->is_on = ti_sci_cmd_dev_is_on;
2852 dops->is_transitioning = ti_sci_cmd_dev_is_trans;
2853 dops->set_device_resets = ti_sci_cmd_set_device_resets;
2854 dops->get_device_resets = ti_sci_cmd_get_device_resets;
2856 cops->get_clock = ti_sci_cmd_get_clock;
2857 cops->idle_clock = ti_sci_cmd_idle_clock;
2858 cops->put_clock = ti_sci_cmd_put_clock;
2859 cops->is_auto = ti_sci_cmd_clk_is_auto;
2860 cops->is_on = ti_sci_cmd_clk_is_on;
2861 cops->is_off = ti_sci_cmd_clk_is_off;
2863 cops->set_parent = ti_sci_cmd_clk_set_parent;
2864 cops->get_parent = ti_sci_cmd_clk_get_parent;
2865 cops->get_num_parents = ti_sci_cmd_clk_get_num_parents;
2867 cops->get_best_match_freq = ti_sci_cmd_clk_get_match_freq;
2868 cops->set_freq = ti_sci_cmd_clk_set_freq;
2869 cops->get_freq = ti_sci_cmd_clk_get_freq;
2871 rm_core_ops->get_range = ti_sci_cmd_get_resource_range;
2872 rm_core_ops->get_range_from_shost =
2873 ti_sci_cmd_get_resource_range_from_shost;
2875 iops->set_irq = ti_sci_cmd_set_irq;
2876 iops->set_event_map = ti_sci_cmd_set_event_map;
2877 iops->free_irq = ti_sci_cmd_free_irq;
2878 iops->free_event_map = ti_sci_cmd_free_event_map;
2880 rops->config = ti_sci_cmd_ring_config;
2881 rops->get_config = ti_sci_cmd_ring_get_config;
2883 psilops->pair = ti_sci_cmd_rm_psil_pair;
2884 psilops->unpair = ti_sci_cmd_rm_psil_unpair;
2886 udmap_ops->tx_ch_cfg = ti_sci_cmd_rm_udmap_tx_ch_cfg;
2887 udmap_ops->rx_ch_cfg = ti_sci_cmd_rm_udmap_rx_ch_cfg;
2888 udmap_ops->rx_flow_cfg = ti_sci_cmd_rm_udmap_rx_flow_cfg;
2890 pops->request = ti_sci_cmd_proc_request;
2891 pops->release = ti_sci_cmd_proc_release;
2892 pops->handover = ti_sci_cmd_proc_handover;
2893 pops->set_config = ti_sci_cmd_proc_set_config;
2894 pops->set_control = ti_sci_cmd_proc_set_control;
2895 pops->get_status = ti_sci_cmd_proc_get_status;
2899 * ti_sci_get_handle() - Get the TI SCI handle for a device
2900 * @dev: Pointer to device for which we want SCI handle
2902 * NOTE: The function does not track individual clients of the framework
2903 * and is expected to be maintained by caller of TI SCI protocol library.
2904 * ti_sci_put_handle must be balanced with successful ti_sci_get_handle
2905 * Return: pointer to handle if successful, else:
2906 * -EPROBE_DEFER if the instance is not ready
2907 * -ENODEV if the required node handler is missing
2908 * -EINVAL if invalid conditions are encountered.
2910 const struct ti_sci_handle *ti_sci_get_handle(struct device *dev)
2912 struct device_node *ti_sci_np;
2913 struct list_head *p;
2914 struct ti_sci_handle *handle = NULL;
2915 struct ti_sci_info *info;
2918 pr_err("I need a device pointer\n");
2919 return ERR_PTR(-EINVAL);
2921 ti_sci_np = of_get_parent(dev->of_node);
2923 dev_err(dev, "No OF information\n");
2924 return ERR_PTR(-EINVAL);
2927 mutex_lock(&ti_sci_list_mutex);
2928 list_for_each(p, &ti_sci_list) {
2929 info = list_entry(p, struct ti_sci_info, node);
2930 if (ti_sci_np == info->dev->of_node) {
2931 handle = &info->handle;
2936 mutex_unlock(&ti_sci_list_mutex);
2937 of_node_put(ti_sci_np);
2940 return ERR_PTR(-EPROBE_DEFER);
2944 EXPORT_SYMBOL_GPL(ti_sci_get_handle);
2947 * ti_sci_put_handle() - Release the handle acquired by ti_sci_get_handle
2948 * @handle: Handle acquired by ti_sci_get_handle
2950 * NOTE: The function does not track individual clients of the framework
2951 * and is expected to be maintained by caller of TI SCI protocol library.
2952 * ti_sci_put_handle must be balanced with successful ti_sci_get_handle
2954 * Return: 0 is successfully released
2955 * if an error pointer was passed, it returns the error value back,
2956 * if null was passed, it returns -EINVAL;
2958 int ti_sci_put_handle(const struct ti_sci_handle *handle)
2960 struct ti_sci_info *info;
2963 return PTR_ERR(handle);
2967 info = handle_to_ti_sci_info(handle);
2968 mutex_lock(&ti_sci_list_mutex);
2969 if (!WARN_ON(!info->users))
2971 mutex_unlock(&ti_sci_list_mutex);
2975 EXPORT_SYMBOL_GPL(ti_sci_put_handle);
2977 static void devm_ti_sci_release(struct device *dev, void *res)
2979 const struct ti_sci_handle **ptr = res;
2980 const struct ti_sci_handle *handle = *ptr;
2983 ret = ti_sci_put_handle(handle);
2985 dev_err(dev, "failed to put handle %d\n", ret);
2989 * devm_ti_sci_get_handle() - Managed get handle
2990 * @dev: device for which we want SCI handle for.
2992 * NOTE: This releases the handle once the device resources are
2993 * no longer needed. MUST NOT BE released with ti_sci_put_handle.
2994 * The function does not track individual clients of the framework
2995 * and is expected to be maintained by caller of TI SCI protocol library.
2997 * Return: 0 if all went fine, else corresponding error.
2999 const struct ti_sci_handle *devm_ti_sci_get_handle(struct device *dev)
3001 const struct ti_sci_handle **ptr;
3002 const struct ti_sci_handle *handle;
3004 ptr = devres_alloc(devm_ti_sci_release, sizeof(*ptr), GFP_KERNEL);
3006 return ERR_PTR(-ENOMEM);
3007 handle = ti_sci_get_handle(dev);
3009 if (!IS_ERR(handle)) {
3011 devres_add(dev, ptr);
3018 EXPORT_SYMBOL_GPL(devm_ti_sci_get_handle);
3021 * ti_sci_get_by_phandle() - Get the TI SCI handle using DT phandle
3023 * @property: property name containing phandle on TISCI node
3025 * NOTE: The function does not track individual clients of the framework
3026 * and is expected to be maintained by caller of TI SCI protocol library.
3027 * ti_sci_put_handle must be balanced with successful ti_sci_get_by_phandle
3028 * Return: pointer to handle if successful, else:
3029 * -EPROBE_DEFER if the instance is not ready
3030 * -ENODEV if the required node handler is missing
3031 * -EINVAL if invalid conditions are encountered.
3033 const struct ti_sci_handle *ti_sci_get_by_phandle(struct device_node *np,
3034 const char *property)
3036 struct ti_sci_handle *handle = NULL;
3037 struct device_node *ti_sci_np;
3038 struct ti_sci_info *info;
3039 struct list_head *p;
3042 pr_err("I need a device pointer\n");
3043 return ERR_PTR(-EINVAL);
3046 ti_sci_np = of_parse_phandle(np, property, 0);
3048 return ERR_PTR(-ENODEV);
3050 mutex_lock(&ti_sci_list_mutex);
3051 list_for_each(p, &ti_sci_list) {
3052 info = list_entry(p, struct ti_sci_info, node);
3053 if (ti_sci_np == info->dev->of_node) {
3054 handle = &info->handle;
3059 mutex_unlock(&ti_sci_list_mutex);
3060 of_node_put(ti_sci_np);
3063 return ERR_PTR(-EPROBE_DEFER);
3067 EXPORT_SYMBOL_GPL(ti_sci_get_by_phandle);
3070 * devm_ti_sci_get_by_phandle() - Managed get handle using phandle
3071 * @dev: Device pointer requesting TISCI handle
3072 * @property: property name containing phandle on TISCI node
3074 * NOTE: This releases the handle once the device resources are
3075 * no longer needed. MUST NOT BE released with ti_sci_put_handle.
3076 * The function does not track individual clients of the framework
3077 * and is expected to be maintained by caller of TI SCI protocol library.
3079 * Return: 0 if all went fine, else corresponding error.
3081 const struct ti_sci_handle *devm_ti_sci_get_by_phandle(struct device *dev,
3082 const char *property)
3084 const struct ti_sci_handle *handle;
3085 const struct ti_sci_handle **ptr;
3087 ptr = devres_alloc(devm_ti_sci_release, sizeof(*ptr), GFP_KERNEL);
3089 return ERR_PTR(-ENOMEM);
3090 handle = ti_sci_get_by_phandle(dev_of_node(dev), property);
3092 if (!IS_ERR(handle)) {
3094 devres_add(dev, ptr);
3101 EXPORT_SYMBOL_GPL(devm_ti_sci_get_by_phandle);
3104 * ti_sci_get_free_resource() - Get a free resource from TISCI resource.
3105 * @res: Pointer to the TISCI resource
3107 * Return: resource num if all went ok else TI_SCI_RESOURCE_NULL.
3109 u16 ti_sci_get_free_resource(struct ti_sci_resource *res)
3111 unsigned long flags;
3114 raw_spin_lock_irqsave(&res->lock, flags);
3115 for (set = 0; set < res->sets; set++) {
3116 free_bit = find_first_zero_bit(res->desc[set].res_map,
3117 res->desc[set].num);
3118 if (free_bit != res->desc[set].num) {
3119 set_bit(free_bit, res->desc[set].res_map);
3120 raw_spin_unlock_irqrestore(&res->lock, flags);
3121 return res->desc[set].start + free_bit;
3124 raw_spin_unlock_irqrestore(&res->lock, flags);
3126 return TI_SCI_RESOURCE_NULL;
3128 EXPORT_SYMBOL_GPL(ti_sci_get_free_resource);
3131 * ti_sci_release_resource() - Release a resource from TISCI resource.
3132 * @res: Pointer to the TISCI resource
3133 * @id: Resource id to be released.
3135 void ti_sci_release_resource(struct ti_sci_resource *res, u16 id)
3137 unsigned long flags;
3140 raw_spin_lock_irqsave(&res->lock, flags);
3141 for (set = 0; set < res->sets; set++) {
3142 if (res->desc[set].start <= id &&
3143 (res->desc[set].num + res->desc[set].start) > id)
3144 clear_bit(id - res->desc[set].start,
3145 res->desc[set].res_map);
3147 raw_spin_unlock_irqrestore(&res->lock, flags);
3149 EXPORT_SYMBOL_GPL(ti_sci_release_resource);
3152 * ti_sci_get_num_resources() - Get the number of resources in TISCI resource
3153 * @res: Pointer to the TISCI resource
3155 * Return: Total number of available resources.
3157 u32 ti_sci_get_num_resources(struct ti_sci_resource *res)
3161 for (set = 0; set < res->sets; set++)
3162 count += res->desc[set].num;
3166 EXPORT_SYMBOL_GPL(ti_sci_get_num_resources);
3169 * devm_ti_sci_get_of_resource() - Get a TISCI resource assigned to a device
3170 * @handle: TISCI handle
3171 * @dev: Device pointer to which the resource is assigned
3172 * @dev_id: TISCI device id to which the resource is assigned
3173 * @of_prop: property name by which the resource are represented
3175 * Return: Pointer to ti_sci_resource if all went well else appropriate
3178 struct ti_sci_resource *
3179 devm_ti_sci_get_of_resource(const struct ti_sci_handle *handle,
3180 struct device *dev, u32 dev_id, char *of_prop)
3182 struct ti_sci_resource *res;
3183 bool valid_set = false;
3184 u32 resource_subtype;
3187 res = devm_kzalloc(dev, sizeof(*res), GFP_KERNEL);
3189 return ERR_PTR(-ENOMEM);
3191 res->sets = of_property_count_elems_of_size(dev_of_node(dev), of_prop,
3193 if (res->sets < 0) {
3194 dev_err(dev, "%s resource type ids not available\n", of_prop);
3195 return ERR_PTR(res->sets);
3198 res->desc = devm_kcalloc(dev, res->sets, sizeof(*res->desc),
3201 return ERR_PTR(-ENOMEM);
3203 for (i = 0; i < res->sets; i++) {
3204 ret = of_property_read_u32_index(dev_of_node(dev), of_prop, i,
3207 return ERR_PTR(-EINVAL);
3209 ret = handle->ops.rm_core_ops.get_range(handle, dev_id,
3211 &res->desc[i].start,
3214 dev_dbg(dev, "dev = %d subtype %d not allocated for this host\n",
3215 dev_id, resource_subtype);
3216 res->desc[i].start = 0;
3217 res->desc[i].num = 0;
3221 dev_dbg(dev, "dev = %d, subtype = %d, start = %d, num = %d\n",
3222 dev_id, resource_subtype, res->desc[i].start,
3226 res->desc[i].res_map =
3227 devm_kzalloc(dev, BITS_TO_LONGS(res->desc[i].num) *
3228 sizeof(*res->desc[i].res_map), GFP_KERNEL);
3229 if (!res->desc[i].res_map)
3230 return ERR_PTR(-ENOMEM);
3232 raw_spin_lock_init(&res->lock);
3237 return ERR_PTR(-EINVAL);
3240 static int tisci_reboot_handler(struct notifier_block *nb, unsigned long mode,
3243 struct ti_sci_info *info = reboot_to_ti_sci_info(nb);
3244 const struct ti_sci_handle *handle = &info->handle;
3246 ti_sci_cmd_core_reboot(handle);
3248 /* call fail OR pass, we should not be here in the first place */
3252 /* Description for K2G */
3253 static const struct ti_sci_desc ti_sci_pmmc_k2g_desc = {
3254 .default_host_id = 2,
3255 /* Conservative duration */
3256 .max_rx_timeout_ms = 1000,
3257 /* Limited by MBOX_TX_QUEUE_LEN. K2G can handle upto 128 messages! */
3260 .rm_type_map = NULL,
3263 static struct ti_sci_rm_type_map ti_sci_am654_rm_type_map[] = {
3264 {.dev_id = 56, .type = 0x00b}, /* GIC_IRQ */
3265 {.dev_id = 179, .type = 0x000}, /* MAIN_NAV_UDMASS_IA0 */
3266 {.dev_id = 187, .type = 0x009}, /* MAIN_NAV_RA */
3267 {.dev_id = 188, .type = 0x006}, /* MAIN_NAV_UDMAP */
3268 {.dev_id = 194, .type = 0x007}, /* MCU_NAV_UDMAP */
3269 {.dev_id = 195, .type = 0x00a}, /* MCU_NAV_RA */
3270 {.dev_id = 0, .type = 0x000}, /* end of table */
3273 /* Description for AM654 */
3274 static const struct ti_sci_desc ti_sci_pmmc_am654_desc = {
3275 .default_host_id = 12,
3276 /* Conservative duration */
3277 .max_rx_timeout_ms = 10000,
3278 /* Limited by MBOX_TX_QUEUE_LEN. K2G can handle upto 128 messages! */
3281 .rm_type_map = ti_sci_am654_rm_type_map,
3284 static const struct of_device_id ti_sci_of_match[] = {
3285 {.compatible = "ti,k2g-sci", .data = &ti_sci_pmmc_k2g_desc},
3286 {.compatible = "ti,am654-sci", .data = &ti_sci_pmmc_am654_desc},
3289 MODULE_DEVICE_TABLE(of, ti_sci_of_match);
3291 static int ti_sci_probe(struct platform_device *pdev)
3293 struct device *dev = &pdev->dev;
3294 const struct of_device_id *of_id;
3295 const struct ti_sci_desc *desc;
3296 struct ti_sci_xfer *xfer;
3297 struct ti_sci_info *info = NULL;
3298 struct ti_sci_xfers_info *minfo;
3299 struct mbox_client *cl;
3305 of_id = of_match_device(ti_sci_of_match, dev);
3307 dev_err(dev, "OF data missing\n");
3312 info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
3318 ret = of_property_read_u32(dev->of_node, "ti,host-id", &h_id);
3319 /* if the property is not present in DT, use a default from desc */
3321 info->host_id = info->desc->default_host_id;
3324 dev_warn(dev, "Host ID 0 is reserved for firmware\n");
3325 info->host_id = info->desc->default_host_id;
3327 info->host_id = h_id;
3331 reboot = of_property_read_bool(dev->of_node,
3332 "ti,system-reboot-controller");
3333 INIT_LIST_HEAD(&info->node);
3334 minfo = &info->minfo;
3337 * Pre-allocate messages
3338 * NEVER allocate more than what we can indicate in hdr.seq
3339 * if we have data description bug, force a fix..
3341 if (WARN_ON(desc->max_msgs >=
3342 1 << 8 * sizeof(((struct ti_sci_msg_hdr *)0)->seq)))
3345 minfo->xfer_block = devm_kcalloc(dev,
3347 sizeof(*minfo->xfer_block),
3349 if (!minfo->xfer_block)
3352 minfo->xfer_alloc_table = devm_kcalloc(dev,
3353 BITS_TO_LONGS(desc->max_msgs),
3354 sizeof(unsigned long),
3356 if (!minfo->xfer_alloc_table)
3358 bitmap_zero(minfo->xfer_alloc_table, desc->max_msgs);
3360 /* Pre-initialize the buffer pointer to pre-allocated buffers */
3361 for (i = 0, xfer = minfo->xfer_block; i < desc->max_msgs; i++, xfer++) {
3362 xfer->xfer_buf = devm_kcalloc(dev, 1, desc->max_msg_size,
3364 if (!xfer->xfer_buf)
3367 xfer->tx_message.buf = xfer->xfer_buf;
3368 init_completion(&xfer->done);
3371 ret = ti_sci_debugfs_create(pdev, info);
3373 dev_warn(dev, "Failed to create debug file\n");
3375 platform_set_drvdata(pdev, info);
3379 cl->tx_block = false;
3380 cl->rx_callback = ti_sci_rx_callback;
3381 cl->knows_txdone = true;
3383 spin_lock_init(&minfo->xfer_lock);
3384 sema_init(&minfo->sem_xfer_count, desc->max_msgs);
3386 info->chan_rx = mbox_request_channel_byname(cl, "rx");
3387 if (IS_ERR(info->chan_rx)) {
3388 ret = PTR_ERR(info->chan_rx);
3392 info->chan_tx = mbox_request_channel_byname(cl, "tx");
3393 if (IS_ERR(info->chan_tx)) {
3394 ret = PTR_ERR(info->chan_tx);
3397 ret = ti_sci_cmd_get_revision(info);
3399 dev_err(dev, "Unable to communicate with TISCI(%d)\n", ret);
3403 ti_sci_setup_ops(info);
3406 info->nb.notifier_call = tisci_reboot_handler;
3407 info->nb.priority = 128;
3409 ret = register_restart_handler(&info->nb);
3411 dev_err(dev, "reboot registration fail(%d)\n", ret);
3416 dev_info(dev, "ABI: %d.%d (firmware rev 0x%04x '%s')\n",
3417 info->handle.version.abi_major, info->handle.version.abi_minor,
3418 info->handle.version.firmware_revision,
3419 info->handle.version.firmware_description);
3421 mutex_lock(&ti_sci_list_mutex);
3422 list_add_tail(&info->node, &ti_sci_list);
3423 mutex_unlock(&ti_sci_list_mutex);
3425 return of_platform_populate(dev->of_node, NULL, NULL, dev);
3427 if (!IS_ERR(info->chan_tx))
3428 mbox_free_channel(info->chan_tx);
3429 if (!IS_ERR(info->chan_rx))
3430 mbox_free_channel(info->chan_rx);
3431 debugfs_remove(info->d);
3435 static int ti_sci_remove(struct platform_device *pdev)
3437 struct ti_sci_info *info;
3438 struct device *dev = &pdev->dev;
3441 of_platform_depopulate(dev);
3443 info = platform_get_drvdata(pdev);
3445 if (info->nb.notifier_call)
3446 unregister_restart_handler(&info->nb);
3448 mutex_lock(&ti_sci_list_mutex);
3452 list_del(&info->node);
3453 mutex_unlock(&ti_sci_list_mutex);
3456 ti_sci_debugfs_destroy(pdev, info);
3458 /* Safe to free channels since no more users */
3459 mbox_free_channel(info->chan_tx);
3460 mbox_free_channel(info->chan_rx);
3466 static struct platform_driver ti_sci_driver = {
3467 .probe = ti_sci_probe,
3468 .remove = ti_sci_remove,
3471 .of_match_table = of_match_ptr(ti_sci_of_match),
3474 module_platform_driver(ti_sci_driver);
3476 MODULE_LICENSE("GPL v2");
3477 MODULE_DESCRIPTION("TI System Control Interface(SCI) driver");
3478 MODULE_AUTHOR("Nishanth Menon");
3479 MODULE_ALIAS("platform:ti-sci");