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1e0a6014 | 1 | // SPDX-License-Identifier: GPL-2.0 |
aa276781 NM |
2 | /* |
3 | * Texas Instruments System Control Interface Protocol Driver | |
4 | * | |
5 | * Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/ | |
6 | * Nishanth Menon | |
aa276781 NM |
7 | */ |
8 | ||
9 | #define pr_fmt(fmt) "%s: " fmt, __func__ | |
10 | ||
11 | #include <linux/bitmap.h> | |
12 | #include <linux/debugfs.h> | |
13 | #include <linux/export.h> | |
14 | #include <linux/io.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> | |
912cffb4 | 23 | #include <linux/reboot.h> |
aa276781 NM |
24 | |
25 | #include "ti_sci.h" | |
26 | ||
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); | |
31 | ||
32 | /** | |
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 | |
41 | */ | |
42 | struct ti_sci_xfer { | |
43 | struct ti_msgmgr_message tx_message; | |
44 | u8 rx_len; | |
45 | u8 *xfer_buf; | |
46 | struct completion done; | |
47 | }; | |
48 | ||
49 | /** | |
50 | * struct ti_sci_xfers_info - Structure to manage transfer information | |
51 | * @sem_xfer_count: Counting Semaphore for managing max simultaneous | |
52 | * Messages. | |
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 | |
58 | */ | |
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 */ | |
64 | spinlock_t xfer_lock; | |
65 | }; | |
66 | ||
9c19fb68 LV |
67 | /** |
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. | |
72 | * | |
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. | |
77 | */ | |
78 | struct ti_sci_rm_type_map { | |
79 | u32 dev_id; | |
80 | u16 type; | |
81 | }; | |
82 | ||
aa276781 NM |
83 | /** |
84 | * struct ti_sci_desc - Description of SoC integration | |
e69a3553 | 85 | * @default_host_id: Host identifier representing the compute entity |
aa276781 NM |
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. | |
9c19fb68 | 90 | * @rm_type_map: RM resource type mapping structure. |
aa276781 NM |
91 | */ |
92 | struct ti_sci_desc { | |
e69a3553 | 93 | u8 default_host_id; |
aa276781 NM |
94 | int max_rx_timeout_ms; |
95 | int max_msgs; | |
96 | int max_msg_size; | |
9c19fb68 | 97 | struct ti_sci_rm_type_map *rm_type_map; |
aa276781 NM |
98 | }; |
99 | ||
100 | /** | |
101 | * struct ti_sci_info - Structure representing a TI SCI instance | |
102 | * @dev: Device pointer | |
103 | * @desc: SoC description for this instance | |
912cffb4 | 104 | * @nb: Reboot Notifier block |
aa276781 NM |
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 | |
114 | * @node: list head | |
e69a3553 | 115 | * @host_id: Host ID |
aa276781 NM |
116 | * @users: Number of users of this instance |
117 | */ | |
118 | struct ti_sci_info { | |
119 | struct device *dev; | |
912cffb4 | 120 | struct notifier_block nb; |
aa276781 NM |
121 | const struct ti_sci_desc *desc; |
122 | struct dentry *d; | |
123 | void __iomem *debug_region; | |
124 | char *debug_buffer; | |
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; | |
e69a3553 | 132 | u8 host_id; |
aa276781 NM |
133 | /* protected by ti_sci_list_mutex */ |
134 | int users; | |
912cffb4 | 135 | |
aa276781 NM |
136 | }; |
137 | ||
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) | |
912cffb4 | 140 | #define reboot_to_ti_sci_info(n) container_of(n, struct ti_sci_info, nb) |
aa276781 NM |
141 | |
142 | #ifdef CONFIG_DEBUG_FS | |
143 | ||
144 | /** | |
145 | * ti_sci_debug_show() - Helper to dump the debug log | |
146 | * @s: sequence file pointer | |
147 | * @unused: unused. | |
148 | * | |
149 | * Return: 0 | |
150 | */ | |
151 | static int ti_sci_debug_show(struct seq_file *s, void *unused) | |
152 | { | |
153 | struct ti_sci_info *info = s->private; | |
154 | ||
155 | memcpy_fromio(info->debug_buffer, info->debug_region, | |
156 | info->debug_region_size); | |
157 | /* | |
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. | |
162 | */ | |
163 | seq_puts(s, info->debug_buffer); | |
164 | return 0; | |
165 | } | |
166 | ||
5953c887 YL |
167 | /* Provide the log file operations interface*/ |
168 | DEFINE_SHOW_ATTRIBUTE(ti_sci_debug); | |
aa276781 NM |
169 | |
170 | /** | |
171 | * ti_sci_debugfs_create() - Create log debug file | |
172 | * @pdev: platform device pointer | |
173 | * @info: Pointer to SCI entity information | |
174 | * | |
175 | * Return: 0 if all went fine, else corresponding error. | |
176 | */ | |
177 | static int ti_sci_debugfs_create(struct platform_device *pdev, | |
178 | struct ti_sci_info *info) | |
179 | { | |
180 | struct device *dev = &pdev->dev; | |
181 | struct resource *res; | |
182 | char debug_name[50] = "ti_sci_debug@"; | |
183 | ||
184 | /* Debug region is optional */ | |
185 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, | |
186 | "debug_messages"); | |
187 | info->debug_region = devm_ioremap_resource(dev, res); | |
188 | if (IS_ERR(info->debug_region)) | |
189 | return 0; | |
190 | info->debug_region_size = resource_size(res); | |
191 | ||
192 | info->debug_buffer = devm_kcalloc(dev, info->debug_region_size + 1, | |
193 | sizeof(char), GFP_KERNEL); | |
194 | if (!info->debug_buffer) | |
195 | return -ENOMEM; | |
196 | /* Setup NULL termination */ | |
197 | info->debug_buffer[info->debug_region_size] = 0; | |
198 | ||
199 | info->d = debugfs_create_file(strncat(debug_name, dev_name(dev), | |
76cefef8 AB |
200 | sizeof(debug_name) - |
201 | sizeof("ti_sci_debug@")), | |
aa276781 NM |
202 | 0444, NULL, info, &ti_sci_debug_fops); |
203 | if (IS_ERR(info->d)) | |
204 | return PTR_ERR(info->d); | |
205 | ||
206 | dev_dbg(dev, "Debug region => %p, size = %zu bytes, resource: %pr\n", | |
207 | info->debug_region, info->debug_region_size, res); | |
208 | return 0; | |
209 | } | |
210 | ||
211 | /** | |
212 | * ti_sci_debugfs_destroy() - clean up log debug file | |
213 | * @pdev: platform device pointer | |
214 | * @info: Pointer to SCI entity information | |
215 | */ | |
216 | static void ti_sci_debugfs_destroy(struct platform_device *pdev, | |
217 | struct ti_sci_info *info) | |
218 | { | |
219 | if (IS_ERR(info->debug_region)) | |
220 | return; | |
221 | ||
222 | debugfs_remove(info->d); | |
223 | } | |
224 | #else /* CONFIG_DEBUG_FS */ | |
225 | static inline int ti_sci_debugfs_create(struct platform_device *dev, | |
226 | struct ti_sci_info *info) | |
227 | { | |
228 | return 0; | |
229 | } | |
230 | ||
231 | static inline void ti_sci_debugfs_destroy(struct platform_device *dev, | |
232 | struct ti_sci_info *info) | |
233 | { | |
234 | } | |
235 | #endif /* CONFIG_DEBUG_FS */ | |
236 | ||
237 | /** | |
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. | |
241 | */ | |
242 | static inline void ti_sci_dump_header_dbg(struct device *dev, | |
243 | struct ti_sci_msg_hdr *hdr) | |
244 | { | |
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); | |
247 | } | |
248 | ||
249 | /** | |
250 | * ti_sci_rx_callback() - mailbox client callback for receive messages | |
251 | * @cl: client pointer | |
252 | * @m: mailbox message | |
253 | * | |
254 | * Processes one received message to appropriate transfer information and | |
255 | * signals completion of the transfer. | |
256 | * | |
257 | * NOTE: This function will be invoked in IRQ context, hence should be | |
258 | * as optimal as possible. | |
259 | */ | |
260 | static void ti_sci_rx_callback(struct mbox_client *cl, void *m) | |
261 | { | |
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; | |
268 | u8 xfer_id; | |
269 | ||
270 | xfer_id = hdr->seq; | |
271 | ||
272 | /* | |
273 | * Are we even expecting this? | |
274 | * NOTE: barriers were implicit in locks used for modifying the bitmap | |
275 | */ | |
276 | if (!test_bit(xfer_id, minfo->xfer_alloc_table)) { | |
277 | dev_err(dev, "Message for %d is not expected!\n", xfer_id); | |
278 | return; | |
279 | } | |
280 | ||
281 | xfer = &minfo->xfer_block[xfer_id]; | |
282 | ||
283 | /* Is the message of valid length? */ | |
284 | if (mbox_msg->len > info->desc->max_msg_size) { | |
bd0fa74e | 285 | dev_err(dev, "Unable to handle %zu xfer(max %d)\n", |
aa276781 NM |
286 | mbox_msg->len, info->desc->max_msg_size); |
287 | ti_sci_dump_header_dbg(dev, hdr); | |
288 | return; | |
289 | } | |
290 | if (mbox_msg->len < xfer->rx_len) { | |
bd0fa74e | 291 | dev_err(dev, "Recv xfer %zu < expected %d length\n", |
aa276781 NM |
292 | mbox_msg->len, xfer->rx_len); |
293 | ti_sci_dump_header_dbg(dev, hdr); | |
294 | return; | |
295 | } | |
296 | ||
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); | |
301 | } | |
302 | ||
303 | /** | |
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 | |
310 | * | |
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. | |
313 | * | |
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. | |
317 | * | |
318 | * Return: 0 if all went fine, else corresponding error. | |
319 | */ | |
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) | |
324 | { | |
325 | struct ti_sci_xfers_info *minfo = &info->minfo; | |
326 | struct ti_sci_xfer *xfer; | |
327 | struct ti_sci_msg_hdr *hdr; | |
328 | unsigned long flags; | |
329 | unsigned long bit_pos; | |
330 | u8 xfer_id; | |
331 | int ret; | |
332 | int timeout; | |
333 | ||
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); | |
339 | ||
340 | /* | |
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.. | |
344 | */ | |
345 | timeout = msecs_to_jiffies(info->desc->max_rx_timeout_ms) * 5; | |
346 | ret = down_timeout(&minfo->sem_xfer_count, timeout); | |
347 | if (ret < 0) | |
348 | return ERR_PTR(ret); | |
349 | ||
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); | |
356 | ||
357 | /* | |
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.. | |
363 | */ | |
364 | xfer_id = (u8)bit_pos; | |
365 | ||
366 | xfer = &minfo->xfer_block[xfer_id]; | |
367 | ||
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; | |
371 | ||
372 | reinit_completion(&xfer->done); | |
373 | ||
374 | hdr->seq = xfer_id; | |
375 | hdr->type = msg_type; | |
e69a3553 | 376 | hdr->host = info->host_id; |
aa276781 NM |
377 | hdr->flags = msg_flags; |
378 | ||
379 | return xfer; | |
380 | } | |
381 | ||
382 | /** | |
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 | |
386 | * | |
387 | * This holds a spinlock to maintain integrity of internal data structures. | |
388 | */ | |
389 | static void ti_sci_put_one_xfer(struct ti_sci_xfers_info *minfo, | |
390 | struct ti_sci_xfer *xfer) | |
391 | { | |
392 | unsigned long flags; | |
393 | struct ti_sci_msg_hdr *hdr; | |
394 | u8 xfer_id; | |
395 | ||
396 | hdr = (struct ti_sci_msg_hdr *)xfer->tx_message.buf; | |
397 | xfer_id = hdr->seq; | |
398 | ||
399 | /* | |
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. | |
403 | */ | |
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); | |
407 | ||
408 | /* Increment the count for the next user to get through */ | |
409 | up(&minfo->sem_xfer_count); | |
410 | } | |
411 | ||
412 | /** | |
413 | * ti_sci_do_xfer() - Do one transfer | |
414 | * @info: Pointer to SCI entity information | |
415 | * @xfer: Transfer to initiate and wait for response | |
416 | * | |
417 | * Return: -ETIMEDOUT in case of no response, if transmit error, | |
418 | * return corresponding error, else if all goes well, | |
419 | * return 0. | |
420 | */ | |
421 | static inline int ti_sci_do_xfer(struct ti_sci_info *info, | |
422 | struct ti_sci_xfer *xfer) | |
423 | { | |
424 | int ret; | |
425 | int timeout; | |
426 | struct device *dev = info->dev; | |
427 | ||
428 | ret = mbox_send_message(info->chan_tx, &xfer->tx_message); | |
429 | if (ret < 0) | |
430 | return ret; | |
431 | ||
432 | ret = 0; | |
433 | ||
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)) { | |
595f3a9d | 437 | dev_err(dev, "Mbox timedout in resp(caller: %pS)\n", |
aa276781 NM |
438 | (void *)_RET_IP_); |
439 | ret = -ETIMEDOUT; | |
440 | } | |
441 | /* | |
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. | |
446 | */ | |
447 | mbox_client_txdone(info->chan_tx, ret); | |
448 | ||
449 | return ret; | |
450 | } | |
451 | ||
452 | /** | |
453 | * ti_sci_cmd_get_revision() - command to get the revision of the SCI entity | |
454 | * @info: Pointer to SCI entity information | |
455 | * | |
456 | * Updates the SCI information in the internal data structure. | |
457 | * | |
458 | * Return: 0 if all went fine, else return appropriate error. | |
459 | */ | |
460 | static int ti_sci_cmd_get_revision(struct ti_sci_info *info) | |
461 | { | |
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; | |
467 | int ret; | |
468 | ||
aa276781 | 469 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_VERSION, |
66f030ea AD |
470 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
471 | sizeof(struct ti_sci_msg_hdr), | |
aa276781 NM |
472 | sizeof(*rev_info)); |
473 | if (IS_ERR(xfer)) { | |
474 | ret = PTR_ERR(xfer); | |
475 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
476 | return ret; | |
477 | } | |
478 | ||
479 | rev_info = (struct ti_sci_msg_resp_version *)xfer->xfer_buf; | |
480 | ||
481 | ret = ti_sci_do_xfer(info, xfer); | |
482 | if (ret) { | |
483 | dev_err(dev, "Mbox send fail %d\n", ret); | |
484 | goto fail; | |
485 | } | |
486 | ||
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)); | |
492 | ||
493 | fail: | |
494 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
495 | return ret; | |
496 | } | |
497 | ||
9e7d756d NM |
498 | /** |
499 | * ti_sci_is_response_ack() - Generic ACK/NACK message checkup | |
500 | * @r: pointer to response buffer | |
501 | * | |
502 | * Return: true if the response was an ACK, else returns false. | |
503 | */ | |
504 | static inline bool ti_sci_is_response_ack(void *r) | |
505 | { | |
506 | struct ti_sci_msg_hdr *hdr = r; | |
507 | ||
508 | return hdr->flags & TI_SCI_FLAG_RESP_GENERIC_ACK ? true : false; | |
509 | } | |
510 | ||
511 | /** | |
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 | |
517 | * | |
518 | * Return: 0 if all went well, else returns appropriate error value. | |
519 | */ | |
520 | static int ti_sci_set_device_state(const struct ti_sci_handle *handle, | |
521 | u32 id, u32 flags, u8 state) | |
522 | { | |
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; | |
527 | struct device *dev; | |
528 | int ret = 0; | |
529 | ||
530 | if (IS_ERR(handle)) | |
531 | return PTR_ERR(handle); | |
532 | if (!handle) | |
533 | return -EINVAL; | |
534 | ||
535 | info = handle_to_ti_sci_info(handle); | |
536 | dev = info->dev; | |
537 | ||
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)); | |
541 | if (IS_ERR(xfer)) { | |
542 | ret = PTR_ERR(xfer); | |
543 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
544 | return ret; | |
545 | } | |
546 | req = (struct ti_sci_msg_req_set_device_state *)xfer->xfer_buf; | |
547 | req->id = id; | |
548 | req->state = state; | |
549 | ||
550 | ret = ti_sci_do_xfer(info, xfer); | |
551 | if (ret) { | |
552 | dev_err(dev, "Mbox send fail %d\n", ret); | |
553 | goto fail; | |
554 | } | |
555 | ||
556 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; | |
557 | ||
558 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; | |
559 | ||
560 | fail: | |
561 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
562 | ||
563 | return ret; | |
564 | } | |
565 | ||
566 | /** | |
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 | |
574 | * | |
575 | * Return: 0 if all went fine, else return appropriate error. | |
576 | */ | |
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) | |
580 | { | |
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; | |
585 | struct device *dev; | |
586 | int ret = 0; | |
587 | ||
588 | if (IS_ERR(handle)) | |
589 | return PTR_ERR(handle); | |
590 | if (!handle) | |
591 | return -EINVAL; | |
592 | ||
593 | if (!clcnt && !resets && !p_state && !c_state) | |
594 | return -EINVAL; | |
595 | ||
596 | info = handle_to_ti_sci_info(handle); | |
597 | dev = info->dev; | |
598 | ||
9e7d756d | 599 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_DEVICE_STATE, |
66f030ea AD |
600 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
601 | sizeof(*req), sizeof(*resp)); | |
9e7d756d NM |
602 | if (IS_ERR(xfer)) { |
603 | ret = PTR_ERR(xfer); | |
604 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
605 | return ret; | |
606 | } | |
607 | req = (struct ti_sci_msg_req_get_device_state *)xfer->xfer_buf; | |
608 | req->id = id; | |
609 | ||
610 | ret = ti_sci_do_xfer(info, xfer); | |
611 | if (ret) { | |
612 | dev_err(dev, "Mbox send fail %d\n", ret); | |
613 | goto fail; | |
614 | } | |
615 | ||
616 | resp = (struct ti_sci_msg_resp_get_device_state *)xfer->xfer_buf; | |
617 | if (!ti_sci_is_response_ack(resp)) { | |
618 | ret = -ENODEV; | |
619 | goto fail; | |
620 | } | |
621 | ||
622 | if (clcnt) | |
623 | *clcnt = resp->context_loss_count; | |
624 | if (resets) | |
625 | *resets = resp->resets; | |
626 | if (p_state) | |
627 | *p_state = resp->programmed_state; | |
628 | if (c_state) | |
629 | *c_state = resp->current_state; | |
630 | fail: | |
631 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
632 | ||
633 | return ret; | |
634 | } | |
635 | ||
636 | /** | |
637 | * ti_sci_cmd_get_device() - command to request for device managed by TISCI | |
45b659ee | 638 | * that can be shared with other hosts. |
9e7d756d NM |
639 | * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle |
640 | * @id: Device Identifier | |
641 | * | |
642 | * Request for the device - NOTE: the client MUST maintain integrity of | |
643 | * usage count by balancing get_device with put_device. No refcounting is | |
644 | * managed by driver for that purpose. | |
645 | * | |
9e7d756d NM |
646 | * Return: 0 if all went fine, else return appropriate error. |
647 | */ | |
648 | static int ti_sci_cmd_get_device(const struct ti_sci_handle *handle, u32 id) | |
45b659ee LV |
649 | { |
650 | return ti_sci_set_device_state(handle, id, 0, | |
651 | MSG_DEVICE_SW_STATE_ON); | |
652 | } | |
653 | ||
654 | /** | |
655 | * ti_sci_cmd_get_device_exclusive() - command to request for device managed by | |
656 | * TISCI that is exclusively owned by the | |
657 | * requesting host. | |
658 | * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle | |
659 | * @id: Device Identifier | |
660 | * | |
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. | |
664 | * | |
665 | * Return: 0 if all went fine, else return appropriate error. | |
666 | */ | |
667 | static int ti_sci_cmd_get_device_exclusive(const struct ti_sci_handle *handle, | |
668 | u32 id) | |
9e7d756d NM |
669 | { |
670 | return ti_sci_set_device_state(handle, id, | |
671 | MSG_FLAG_DEVICE_EXCLUSIVE, | |
672 | MSG_DEVICE_SW_STATE_ON); | |
673 | } | |
674 | ||
675 | /** | |
676 | * ti_sci_cmd_idle_device() - Command to idle a device managed by TISCI | |
677 | * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle | |
678 | * @id: Device Identifier | |
679 | * | |
680 | * Request for the device - NOTE: the client MUST maintain integrity of | |
681 | * usage count by balancing get_device with put_device. No refcounting is | |
682 | * managed by driver for that purpose. | |
683 | * | |
684 | * Return: 0 if all went fine, else return appropriate error. | |
685 | */ | |
686 | static int ti_sci_cmd_idle_device(const struct ti_sci_handle *handle, u32 id) | |
45b659ee LV |
687 | { |
688 | return ti_sci_set_device_state(handle, id, 0, | |
689 | MSG_DEVICE_SW_STATE_RETENTION); | |
690 | } | |
691 | ||
692 | /** | |
693 | * ti_sci_cmd_idle_device_exclusive() - Command to idle a device managed by | |
694 | * TISCI that is exclusively owned by | |
695 | * requesting host. | |
696 | * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle | |
697 | * @id: Device Identifier | |
698 | * | |
699 | * Request for the device - NOTE: the client MUST maintain integrity of | |
700 | * usage count by balancing get_device with put_device. No refcounting is | |
701 | * managed by driver for that purpose. | |
702 | * | |
703 | * Return: 0 if all went fine, else return appropriate error. | |
704 | */ | |
705 | static int ti_sci_cmd_idle_device_exclusive(const struct ti_sci_handle *handle, | |
706 | u32 id) | |
9e7d756d NM |
707 | { |
708 | return ti_sci_set_device_state(handle, id, | |
709 | MSG_FLAG_DEVICE_EXCLUSIVE, | |
710 | MSG_DEVICE_SW_STATE_RETENTION); | |
711 | } | |
712 | ||
713 | /** | |
714 | * ti_sci_cmd_put_device() - command to release a device managed by TISCI | |
715 | * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle | |
716 | * @id: Device Identifier | |
717 | * | |
718 | * Request for the device - NOTE: the client MUST maintain integrity of | |
719 | * usage count by balancing get_device with put_device. No refcounting is | |
720 | * managed by driver for that purpose. | |
721 | * | |
722 | * Return: 0 if all went fine, else return appropriate error. | |
723 | */ | |
724 | static int ti_sci_cmd_put_device(const struct ti_sci_handle *handle, u32 id) | |
725 | { | |
726 | return ti_sci_set_device_state(handle, id, | |
727 | 0, MSG_DEVICE_SW_STATE_AUTO_OFF); | |
728 | } | |
729 | ||
730 | /** | |
731 | * ti_sci_cmd_dev_is_valid() - Is the device valid | |
732 | * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle | |
733 | * @id: Device Identifier | |
734 | * | |
735 | * Return: 0 if all went fine and the device ID is valid, else return | |
736 | * appropriate error. | |
737 | */ | |
738 | static int ti_sci_cmd_dev_is_valid(const struct ti_sci_handle *handle, u32 id) | |
739 | { | |
740 | u8 unused; | |
741 | ||
742 | /* check the device state which will also tell us if the ID is valid */ | |
743 | return ti_sci_get_device_state(handle, id, NULL, NULL, NULL, &unused); | |
744 | } | |
745 | ||
746 | /** | |
747 | * ti_sci_cmd_dev_get_clcnt() - Get context loss counter | |
748 | * @handle: Pointer to TISCI handle | |
749 | * @id: Device Identifier | |
750 | * @count: Pointer to Context Loss counter to populate | |
751 | * | |
752 | * Return: 0 if all went fine, else return appropriate error. | |
753 | */ | |
754 | static int ti_sci_cmd_dev_get_clcnt(const struct ti_sci_handle *handle, u32 id, | |
755 | u32 *count) | |
756 | { | |
757 | return ti_sci_get_device_state(handle, id, count, NULL, NULL, NULL); | |
758 | } | |
759 | ||
760 | /** | |
761 | * ti_sci_cmd_dev_is_idle() - Check if the device is requested to be idle | |
762 | * @handle: Pointer to TISCI handle | |
763 | * @id: Device Identifier | |
764 | * @r_state: true if requested to be idle | |
765 | * | |
766 | * Return: 0 if all went fine, else return appropriate error. | |
767 | */ | |
768 | static int ti_sci_cmd_dev_is_idle(const struct ti_sci_handle *handle, u32 id, | |
769 | bool *r_state) | |
770 | { | |
771 | int ret; | |
772 | u8 state; | |
773 | ||
774 | if (!r_state) | |
775 | return -EINVAL; | |
776 | ||
777 | ret = ti_sci_get_device_state(handle, id, NULL, NULL, &state, NULL); | |
778 | if (ret) | |
779 | return ret; | |
780 | ||
781 | *r_state = (state == MSG_DEVICE_SW_STATE_RETENTION); | |
782 | ||
783 | return 0; | |
784 | } | |
785 | ||
786 | /** | |
787 | * ti_sci_cmd_dev_is_stop() - Check if the device is requested to be stopped | |
788 | * @handle: Pointer to TISCI handle | |
789 | * @id: Device Identifier | |
790 | * @r_state: true if requested to be stopped | |
791 | * @curr_state: true if currently stopped. | |
792 | * | |
793 | * Return: 0 if all went fine, else return appropriate error. | |
794 | */ | |
795 | static int ti_sci_cmd_dev_is_stop(const struct ti_sci_handle *handle, u32 id, | |
796 | bool *r_state, bool *curr_state) | |
797 | { | |
798 | int ret; | |
799 | u8 p_state, c_state; | |
800 | ||
801 | if (!r_state && !curr_state) | |
802 | return -EINVAL; | |
803 | ||
804 | ret = | |
805 | ti_sci_get_device_state(handle, id, NULL, NULL, &p_state, &c_state); | |
806 | if (ret) | |
807 | return ret; | |
808 | ||
809 | if (r_state) | |
810 | *r_state = (p_state == MSG_DEVICE_SW_STATE_AUTO_OFF); | |
811 | if (curr_state) | |
812 | *curr_state = (c_state == MSG_DEVICE_HW_STATE_OFF); | |
813 | ||
814 | return 0; | |
815 | } | |
816 | ||
817 | /** | |
818 | * ti_sci_cmd_dev_is_on() - Check if the device is requested to be ON | |
819 | * @handle: Pointer to TISCI handle | |
820 | * @id: Device Identifier | |
821 | * @r_state: true if requested to be ON | |
822 | * @curr_state: true if currently ON and active | |
823 | * | |
824 | * Return: 0 if all went fine, else return appropriate error. | |
825 | */ | |
826 | static int ti_sci_cmd_dev_is_on(const struct ti_sci_handle *handle, u32 id, | |
827 | bool *r_state, bool *curr_state) | |
828 | { | |
829 | int ret; | |
830 | u8 p_state, c_state; | |
831 | ||
832 | if (!r_state && !curr_state) | |
833 | return -EINVAL; | |
834 | ||
835 | ret = | |
836 | ti_sci_get_device_state(handle, id, NULL, NULL, &p_state, &c_state); | |
837 | if (ret) | |
838 | return ret; | |
839 | ||
840 | if (r_state) | |
841 | *r_state = (p_state == MSG_DEVICE_SW_STATE_ON); | |
842 | if (curr_state) | |
843 | *curr_state = (c_state == MSG_DEVICE_HW_STATE_ON); | |
844 | ||
845 | return 0; | |
846 | } | |
847 | ||
848 | /** | |
849 | * ti_sci_cmd_dev_is_trans() - Check if the device is currently transitioning | |
850 | * @handle: Pointer to TISCI handle | |
851 | * @id: Device Identifier | |
852 | * @curr_state: true if currently transitioning. | |
853 | * | |
854 | * Return: 0 if all went fine, else return appropriate error. | |
855 | */ | |
856 | static int ti_sci_cmd_dev_is_trans(const struct ti_sci_handle *handle, u32 id, | |
857 | bool *curr_state) | |
858 | { | |
859 | int ret; | |
860 | u8 state; | |
861 | ||
862 | if (!curr_state) | |
863 | return -EINVAL; | |
864 | ||
865 | ret = ti_sci_get_device_state(handle, id, NULL, NULL, NULL, &state); | |
866 | if (ret) | |
867 | return ret; | |
868 | ||
869 | *curr_state = (state == MSG_DEVICE_HW_STATE_TRANS); | |
870 | ||
871 | return 0; | |
872 | } | |
873 | ||
874 | /** | |
875 | * ti_sci_cmd_set_device_resets() - command to set resets for device managed | |
876 | * by TISCI | |
877 | * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle | |
878 | * @id: Device Identifier | |
879 | * @reset_state: Device specific reset bit field | |
880 | * | |
881 | * Return: 0 if all went fine, else return appropriate error. | |
882 | */ | |
883 | static int ti_sci_cmd_set_device_resets(const struct ti_sci_handle *handle, | |
884 | u32 id, u32 reset_state) | |
885 | { | |
886 | struct ti_sci_info *info; | |
887 | struct ti_sci_msg_req_set_device_resets *req; | |
888 | struct ti_sci_msg_hdr *resp; | |
889 | struct ti_sci_xfer *xfer; | |
890 | struct device *dev; | |
891 | int ret = 0; | |
892 | ||
893 | if (IS_ERR(handle)) | |
894 | return PTR_ERR(handle); | |
895 | if (!handle) | |
896 | return -EINVAL; | |
897 | ||
898 | info = handle_to_ti_sci_info(handle); | |
899 | dev = info->dev; | |
900 | ||
901 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_DEVICE_RESETS, | |
902 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
903 | sizeof(*req), sizeof(*resp)); | |
904 | if (IS_ERR(xfer)) { | |
905 | ret = PTR_ERR(xfer); | |
906 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
907 | return ret; | |
908 | } | |
909 | req = (struct ti_sci_msg_req_set_device_resets *)xfer->xfer_buf; | |
910 | req->id = id; | |
911 | req->resets = reset_state; | |
912 | ||
913 | ret = ti_sci_do_xfer(info, xfer); | |
914 | if (ret) { | |
915 | dev_err(dev, "Mbox send fail %d\n", ret); | |
916 | goto fail; | |
917 | } | |
918 | ||
919 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; | |
920 | ||
921 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; | |
922 | ||
923 | fail: | |
924 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
925 | ||
926 | return ret; | |
927 | } | |
928 | ||
929 | /** | |
930 | * ti_sci_cmd_get_device_resets() - Get reset state for device managed | |
931 | * by TISCI | |
932 | * @handle: Pointer to TISCI handle | |
933 | * @id: Device Identifier | |
934 | * @reset_state: Pointer to reset state to populate | |
935 | * | |
936 | * Return: 0 if all went fine, else return appropriate error. | |
937 | */ | |
938 | static int ti_sci_cmd_get_device_resets(const struct ti_sci_handle *handle, | |
939 | u32 id, u32 *reset_state) | |
940 | { | |
941 | return ti_sci_get_device_state(handle, id, NULL, reset_state, NULL, | |
942 | NULL); | |
943 | } | |
944 | ||
9f723220 NM |
945 | /** |
946 | * ti_sci_set_clock_state() - Set clock state helper | |
947 | * @handle: pointer to TI SCI handle | |
948 | * @dev_id: Device identifier this request is for | |
949 | * @clk_id: Clock identifier for the device for this request. | |
950 | * Each device has it's own set of clock inputs. This indexes | |
951 | * which clock input to modify. | |
952 | * @flags: Header flags as needed | |
953 | * @state: State to request for the clock. | |
954 | * | |
955 | * Return: 0 if all went well, else returns appropriate error value. | |
956 | */ | |
957 | static int ti_sci_set_clock_state(const struct ti_sci_handle *handle, | |
81f4458c | 958 | u32 dev_id, u32 clk_id, |
9f723220 NM |
959 | u32 flags, u8 state) |
960 | { | |
961 | struct ti_sci_info *info; | |
962 | struct ti_sci_msg_req_set_clock_state *req; | |
963 | struct ti_sci_msg_hdr *resp; | |
964 | struct ti_sci_xfer *xfer; | |
965 | struct device *dev; | |
966 | int ret = 0; | |
967 | ||
968 | if (IS_ERR(handle)) | |
969 | return PTR_ERR(handle); | |
970 | if (!handle) | |
971 | return -EINVAL; | |
972 | ||
973 | info = handle_to_ti_sci_info(handle); | |
974 | dev = info->dev; | |
975 | ||
976 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CLOCK_STATE, | |
977 | flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
978 | sizeof(*req), sizeof(*resp)); | |
979 | if (IS_ERR(xfer)) { | |
980 | ret = PTR_ERR(xfer); | |
981 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
982 | return ret; | |
983 | } | |
984 | req = (struct ti_sci_msg_req_set_clock_state *)xfer->xfer_buf; | |
985 | req->dev_id = dev_id; | |
81f4458c TK |
986 | if (clk_id < 255) { |
987 | req->clk_id = clk_id; | |
988 | } else { | |
989 | req->clk_id = 255; | |
990 | req->clk_id_32 = clk_id; | |
991 | } | |
9f723220 NM |
992 | req->request_state = state; |
993 | ||
994 | ret = ti_sci_do_xfer(info, xfer); | |
995 | if (ret) { | |
996 | dev_err(dev, "Mbox send fail %d\n", ret); | |
997 | goto fail; | |
998 | } | |
999 | ||
1000 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; | |
1001 | ||
1002 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; | |
1003 | ||
1004 | fail: | |
1005 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
1006 | ||
1007 | return ret; | |
1008 | } | |
1009 | ||
1010 | /** | |
1011 | * ti_sci_cmd_get_clock_state() - Get clock state helper | |
1012 | * @handle: pointer to TI SCI handle | |
1013 | * @dev_id: Device identifier this request is for | |
1014 | * @clk_id: Clock identifier for the device for this request. | |
1015 | * Each device has it's own set of clock inputs. This indexes | |
1016 | * which clock input to modify. | |
1017 | * @programmed_state: State requested for clock to move to | |
1018 | * @current_state: State that the clock is currently in | |
1019 | * | |
1020 | * Return: 0 if all went well, else returns appropriate error value. | |
1021 | */ | |
1022 | static int ti_sci_cmd_get_clock_state(const struct ti_sci_handle *handle, | |
81f4458c | 1023 | u32 dev_id, u32 clk_id, |
9f723220 NM |
1024 | u8 *programmed_state, u8 *current_state) |
1025 | { | |
1026 | struct ti_sci_info *info; | |
1027 | struct ti_sci_msg_req_get_clock_state *req; | |
1028 | struct ti_sci_msg_resp_get_clock_state *resp; | |
1029 | struct ti_sci_xfer *xfer; | |
1030 | struct device *dev; | |
1031 | int ret = 0; | |
1032 | ||
1033 | if (IS_ERR(handle)) | |
1034 | return PTR_ERR(handle); | |
1035 | if (!handle) | |
1036 | return -EINVAL; | |
1037 | ||
1038 | if (!programmed_state && !current_state) | |
1039 | return -EINVAL; | |
1040 | ||
1041 | info = handle_to_ti_sci_info(handle); | |
1042 | dev = info->dev; | |
1043 | ||
1044 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_CLOCK_STATE, | |
1045 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
1046 | sizeof(*req), sizeof(*resp)); | |
1047 | if (IS_ERR(xfer)) { | |
1048 | ret = PTR_ERR(xfer); | |
1049 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
1050 | return ret; | |
1051 | } | |
1052 | req = (struct ti_sci_msg_req_get_clock_state *)xfer->xfer_buf; | |
1053 | req->dev_id = dev_id; | |
81f4458c TK |
1054 | if (clk_id < 255) { |
1055 | req->clk_id = clk_id; | |
1056 | } else { | |
1057 | req->clk_id = 255; | |
1058 | req->clk_id_32 = clk_id; | |
1059 | } | |
9f723220 NM |
1060 | |
1061 | ret = ti_sci_do_xfer(info, xfer); | |
1062 | if (ret) { | |
1063 | dev_err(dev, "Mbox send fail %d\n", ret); | |
1064 | goto fail; | |
1065 | } | |
1066 | ||
1067 | resp = (struct ti_sci_msg_resp_get_clock_state *)xfer->xfer_buf; | |
1068 | ||
1069 | if (!ti_sci_is_response_ack(resp)) { | |
1070 | ret = -ENODEV; | |
1071 | goto fail; | |
1072 | } | |
1073 | ||
1074 | if (programmed_state) | |
1075 | *programmed_state = resp->programmed_state; | |
1076 | if (current_state) | |
1077 | *current_state = resp->current_state; | |
1078 | ||
1079 | fail: | |
1080 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
1081 | ||
1082 | return ret; | |
1083 | } | |
1084 | ||
1085 | /** | |
1086 | * ti_sci_cmd_get_clock() - Get control of a clock from TI SCI | |
1087 | * @handle: pointer to TI SCI handle | |
1088 | * @dev_id: Device identifier this request is for | |
1089 | * @clk_id: Clock identifier for the device for this request. | |
1090 | * Each device has it's own set of clock inputs. This indexes | |
1091 | * which clock input to modify. | |
1092 | * @needs_ssc: 'true' if Spread Spectrum clock is desired, else 'false' | |
1093 | * @can_change_freq: 'true' if frequency change is desired, else 'false' | |
1094 | * @enable_input_term: 'true' if input termination is desired, else 'false' | |
1095 | * | |
1096 | * Return: 0 if all went well, else returns appropriate error value. | |
1097 | */ | |
1098 | static int ti_sci_cmd_get_clock(const struct ti_sci_handle *handle, u32 dev_id, | |
81f4458c TK |
1099 | u32 clk_id, bool needs_ssc, |
1100 | bool can_change_freq, bool enable_input_term) | |
9f723220 NM |
1101 | { |
1102 | u32 flags = 0; | |
1103 | ||
1104 | flags |= needs_ssc ? MSG_FLAG_CLOCK_ALLOW_SSC : 0; | |
1105 | flags |= can_change_freq ? MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE : 0; | |
1106 | flags |= enable_input_term ? MSG_FLAG_CLOCK_INPUT_TERM : 0; | |
1107 | ||
1108 | return ti_sci_set_clock_state(handle, dev_id, clk_id, flags, | |
1109 | MSG_CLOCK_SW_STATE_REQ); | |
1110 | } | |
1111 | ||
1112 | /** | |
1113 | * ti_sci_cmd_idle_clock() - Idle a clock which is in our control | |
1114 | * @handle: pointer to TI SCI handle | |
1115 | * @dev_id: Device identifier this request is for | |
1116 | * @clk_id: Clock identifier for the device for this request. | |
1117 | * Each device has it's own set of clock inputs. This indexes | |
1118 | * which clock input to modify. | |
1119 | * | |
1120 | * NOTE: This clock must have been requested by get_clock previously. | |
1121 | * | |
1122 | * Return: 0 if all went well, else returns appropriate error value. | |
1123 | */ | |
1124 | static int ti_sci_cmd_idle_clock(const struct ti_sci_handle *handle, | |
81f4458c | 1125 | u32 dev_id, u32 clk_id) |
9f723220 NM |
1126 | { |
1127 | return ti_sci_set_clock_state(handle, dev_id, clk_id, 0, | |
1128 | MSG_CLOCK_SW_STATE_UNREQ); | |
1129 | } | |
1130 | ||
1131 | /** | |
1132 | * ti_sci_cmd_put_clock() - Release a clock from our control back to TISCI | |
1133 | * @handle: pointer to TI SCI handle | |
1134 | * @dev_id: Device identifier this request is for | |
1135 | * @clk_id: Clock identifier for the device for this request. | |
1136 | * Each device has it's own set of clock inputs. This indexes | |
1137 | * which clock input to modify. | |
1138 | * | |
1139 | * NOTE: This clock must have been requested by get_clock previously. | |
1140 | * | |
1141 | * Return: 0 if all went well, else returns appropriate error value. | |
1142 | */ | |
1143 | static int ti_sci_cmd_put_clock(const struct ti_sci_handle *handle, | |
81f4458c | 1144 | u32 dev_id, u32 clk_id) |
9f723220 NM |
1145 | { |
1146 | return ti_sci_set_clock_state(handle, dev_id, clk_id, 0, | |
1147 | MSG_CLOCK_SW_STATE_AUTO); | |
1148 | } | |
1149 | ||
1150 | /** | |
1151 | * ti_sci_cmd_clk_is_auto() - Is the clock being auto managed | |
1152 | * @handle: pointer to TI SCI handle | |
1153 | * @dev_id: Device identifier this request is for | |
1154 | * @clk_id: Clock identifier for the device for this request. | |
1155 | * Each device has it's own set of clock inputs. This indexes | |
1156 | * which clock input to modify. | |
1157 | * @req_state: state indicating if the clock is auto managed | |
1158 | * | |
1159 | * Return: 0 if all went well, else returns appropriate error value. | |
1160 | */ | |
1161 | static int ti_sci_cmd_clk_is_auto(const struct ti_sci_handle *handle, | |
81f4458c | 1162 | u32 dev_id, u32 clk_id, bool *req_state) |
9f723220 NM |
1163 | { |
1164 | u8 state = 0; | |
1165 | int ret; | |
1166 | ||
1167 | if (!req_state) | |
1168 | return -EINVAL; | |
1169 | ||
1170 | ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id, &state, NULL); | |
1171 | if (ret) | |
1172 | return ret; | |
1173 | ||
1174 | *req_state = (state == MSG_CLOCK_SW_STATE_AUTO); | |
1175 | return 0; | |
1176 | } | |
1177 | ||
1178 | /** | |
1179 | * ti_sci_cmd_clk_is_on() - Is the clock ON | |
1180 | * @handle: pointer to TI SCI handle | |
1181 | * @dev_id: Device identifier this request is for | |
1182 | * @clk_id: Clock identifier for the device for this request. | |
1183 | * Each device has it's own set of clock inputs. This indexes | |
1184 | * which clock input to modify. | |
1185 | * @req_state: state indicating if the clock is managed by us and enabled | |
1186 | * @curr_state: state indicating if the clock is ready for operation | |
1187 | * | |
1188 | * Return: 0 if all went well, else returns appropriate error value. | |
1189 | */ | |
1190 | static int ti_sci_cmd_clk_is_on(const struct ti_sci_handle *handle, u32 dev_id, | |
81f4458c | 1191 | u32 clk_id, bool *req_state, bool *curr_state) |
9f723220 NM |
1192 | { |
1193 | u8 c_state = 0, r_state = 0; | |
1194 | int ret; | |
1195 | ||
1196 | if (!req_state && !curr_state) | |
1197 | return -EINVAL; | |
1198 | ||
1199 | ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id, | |
1200 | &r_state, &c_state); | |
1201 | if (ret) | |
1202 | return ret; | |
1203 | ||
1204 | if (req_state) | |
1205 | *req_state = (r_state == MSG_CLOCK_SW_STATE_REQ); | |
1206 | if (curr_state) | |
1207 | *curr_state = (c_state == MSG_CLOCK_HW_STATE_READY); | |
1208 | return 0; | |
1209 | } | |
1210 | ||
1211 | /** | |
1212 | * ti_sci_cmd_clk_is_off() - Is the clock OFF | |
1213 | * @handle: pointer to TI SCI handle | |
1214 | * @dev_id: Device identifier this request is for | |
1215 | * @clk_id: Clock identifier for the device for this request. | |
1216 | * Each device has it's own set of clock inputs. This indexes | |
1217 | * which clock input to modify. | |
1218 | * @req_state: state indicating if the clock is managed by us and disabled | |
1219 | * @curr_state: state indicating if the clock is NOT ready for operation | |
1220 | * | |
1221 | * Return: 0 if all went well, else returns appropriate error value. | |
1222 | */ | |
1223 | static int ti_sci_cmd_clk_is_off(const struct ti_sci_handle *handle, u32 dev_id, | |
81f4458c | 1224 | u32 clk_id, bool *req_state, bool *curr_state) |
9f723220 NM |
1225 | { |
1226 | u8 c_state = 0, r_state = 0; | |
1227 | int ret; | |
1228 | ||
1229 | if (!req_state && !curr_state) | |
1230 | return -EINVAL; | |
1231 | ||
1232 | ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id, | |
1233 | &r_state, &c_state); | |
1234 | if (ret) | |
1235 | return ret; | |
1236 | ||
1237 | if (req_state) | |
1238 | *req_state = (r_state == MSG_CLOCK_SW_STATE_UNREQ); | |
1239 | if (curr_state) | |
1240 | *curr_state = (c_state == MSG_CLOCK_HW_STATE_NOT_READY); | |
1241 | return 0; | |
1242 | } | |
1243 | ||
1244 | /** | |
1245 | * ti_sci_cmd_clk_set_parent() - Set the clock source of a specific device clock | |
1246 | * @handle: pointer to TI SCI handle | |
1247 | * @dev_id: Device identifier this request is for | |
1248 | * @clk_id: Clock identifier for the device for this request. | |
1249 | * Each device has it's own set of clock inputs. This indexes | |
1250 | * which clock input to modify. | |
1251 | * @parent_id: Parent clock identifier to set | |
1252 | * | |
1253 | * Return: 0 if all went well, else returns appropriate error value. | |
1254 | */ | |
1255 | static int ti_sci_cmd_clk_set_parent(const struct ti_sci_handle *handle, | |
81f4458c | 1256 | u32 dev_id, u32 clk_id, u32 parent_id) |
9f723220 NM |
1257 | { |
1258 | struct ti_sci_info *info; | |
1259 | struct ti_sci_msg_req_set_clock_parent *req; | |
1260 | struct ti_sci_msg_hdr *resp; | |
1261 | struct ti_sci_xfer *xfer; | |
1262 | struct device *dev; | |
1263 | int ret = 0; | |
1264 | ||
1265 | if (IS_ERR(handle)) | |
1266 | return PTR_ERR(handle); | |
1267 | if (!handle) | |
1268 | return -EINVAL; | |
1269 | ||
1270 | info = handle_to_ti_sci_info(handle); | |
1271 | dev = info->dev; | |
1272 | ||
1273 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CLOCK_PARENT, | |
1274 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
1275 | sizeof(*req), sizeof(*resp)); | |
1276 | if (IS_ERR(xfer)) { | |
1277 | ret = PTR_ERR(xfer); | |
1278 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
1279 | return ret; | |
1280 | } | |
1281 | req = (struct ti_sci_msg_req_set_clock_parent *)xfer->xfer_buf; | |
1282 | req->dev_id = dev_id; | |
81f4458c TK |
1283 | if (clk_id < 255) { |
1284 | req->clk_id = clk_id; | |
1285 | } else { | |
1286 | req->clk_id = 255; | |
1287 | req->clk_id_32 = clk_id; | |
1288 | } | |
1289 | if (parent_id < 255) { | |
1290 | req->parent_id = parent_id; | |
1291 | } else { | |
1292 | req->parent_id = 255; | |
1293 | req->parent_id_32 = parent_id; | |
1294 | } | |
9f723220 NM |
1295 | |
1296 | ret = ti_sci_do_xfer(info, xfer); | |
1297 | if (ret) { | |
1298 | dev_err(dev, "Mbox send fail %d\n", ret); | |
1299 | goto fail; | |
1300 | } | |
1301 | ||
1302 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; | |
1303 | ||
1304 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; | |
1305 | ||
1306 | fail: | |
1307 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
1308 | ||
1309 | return ret; | |
1310 | } | |
1311 | ||
1312 | /** | |
1313 | * ti_sci_cmd_clk_get_parent() - Get current parent clock source | |
1314 | * @handle: pointer to TI SCI handle | |
1315 | * @dev_id: Device identifier this request is for | |
1316 | * @clk_id: Clock identifier for the device for this request. | |
1317 | * Each device has it's own set of clock inputs. This indexes | |
1318 | * which clock input to modify. | |
1319 | * @parent_id: Current clock parent | |
1320 | * | |
1321 | * Return: 0 if all went well, else returns appropriate error value. | |
1322 | */ | |
1323 | static int ti_sci_cmd_clk_get_parent(const struct ti_sci_handle *handle, | |
81f4458c | 1324 | u32 dev_id, u32 clk_id, u32 *parent_id) |
9f723220 NM |
1325 | { |
1326 | struct ti_sci_info *info; | |
1327 | struct ti_sci_msg_req_get_clock_parent *req; | |
1328 | struct ti_sci_msg_resp_get_clock_parent *resp; | |
1329 | struct ti_sci_xfer *xfer; | |
1330 | struct device *dev; | |
1331 | int ret = 0; | |
1332 | ||
1333 | if (IS_ERR(handle)) | |
1334 | return PTR_ERR(handle); | |
1335 | if (!handle || !parent_id) | |
1336 | return -EINVAL; | |
1337 | ||
1338 | info = handle_to_ti_sci_info(handle); | |
1339 | dev = info->dev; | |
1340 | ||
1341 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_CLOCK_PARENT, | |
1342 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
1343 | sizeof(*req), sizeof(*resp)); | |
1344 | if (IS_ERR(xfer)) { | |
1345 | ret = PTR_ERR(xfer); | |
1346 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
1347 | return ret; | |
1348 | } | |
1349 | req = (struct ti_sci_msg_req_get_clock_parent *)xfer->xfer_buf; | |
1350 | req->dev_id = dev_id; | |
81f4458c TK |
1351 | if (clk_id < 255) { |
1352 | req->clk_id = clk_id; | |
1353 | } else { | |
1354 | req->clk_id = 255; | |
1355 | req->clk_id_32 = clk_id; | |
1356 | } | |
9f723220 NM |
1357 | |
1358 | ret = ti_sci_do_xfer(info, xfer); | |
1359 | if (ret) { | |
1360 | dev_err(dev, "Mbox send fail %d\n", ret); | |
1361 | goto fail; | |
1362 | } | |
1363 | ||
1364 | resp = (struct ti_sci_msg_resp_get_clock_parent *)xfer->xfer_buf; | |
1365 | ||
81f4458c | 1366 | if (!ti_sci_is_response_ack(resp)) { |
9f723220 | 1367 | ret = -ENODEV; |
81f4458c TK |
1368 | } else { |
1369 | if (resp->parent_id < 255) | |
1370 | *parent_id = resp->parent_id; | |
1371 | else | |
1372 | *parent_id = resp->parent_id_32; | |
1373 | } | |
9f723220 NM |
1374 | |
1375 | fail: | |
1376 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
1377 | ||
1378 | return ret; | |
1379 | } | |
1380 | ||
1381 | /** | |
1382 | * ti_sci_cmd_clk_get_num_parents() - Get num parents of the current clk source | |
1383 | * @handle: pointer to TI SCI handle | |
1384 | * @dev_id: Device identifier this request is for | |
1385 | * @clk_id: Clock identifier for the device for this request. | |
1386 | * Each device has it's own set of clock inputs. This indexes | |
1387 | * which clock input to modify. | |
1388 | * @num_parents: Returns he number of parents to the current clock. | |
1389 | * | |
1390 | * Return: 0 if all went well, else returns appropriate error value. | |
1391 | */ | |
1392 | static int ti_sci_cmd_clk_get_num_parents(const struct ti_sci_handle *handle, | |
81f4458c TK |
1393 | u32 dev_id, u32 clk_id, |
1394 | u32 *num_parents) | |
9f723220 NM |
1395 | { |
1396 | struct ti_sci_info *info; | |
1397 | struct ti_sci_msg_req_get_clock_num_parents *req; | |
1398 | struct ti_sci_msg_resp_get_clock_num_parents *resp; | |
1399 | struct ti_sci_xfer *xfer; | |
1400 | struct device *dev; | |
1401 | int ret = 0; | |
1402 | ||
1403 | if (IS_ERR(handle)) | |
1404 | return PTR_ERR(handle); | |
1405 | if (!handle || !num_parents) | |
1406 | return -EINVAL; | |
1407 | ||
1408 | info = handle_to_ti_sci_info(handle); | |
1409 | dev = info->dev; | |
1410 | ||
1411 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_NUM_CLOCK_PARENTS, | |
1412 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
1413 | sizeof(*req), sizeof(*resp)); | |
1414 | if (IS_ERR(xfer)) { | |
1415 | ret = PTR_ERR(xfer); | |
1416 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
1417 | return ret; | |
1418 | } | |
1419 | req = (struct ti_sci_msg_req_get_clock_num_parents *)xfer->xfer_buf; | |
1420 | req->dev_id = dev_id; | |
81f4458c TK |
1421 | if (clk_id < 255) { |
1422 | req->clk_id = clk_id; | |
1423 | } else { | |
1424 | req->clk_id = 255; | |
1425 | req->clk_id_32 = clk_id; | |
1426 | } | |
9f723220 NM |
1427 | |
1428 | ret = ti_sci_do_xfer(info, xfer); | |
1429 | if (ret) { | |
1430 | dev_err(dev, "Mbox send fail %d\n", ret); | |
1431 | goto fail; | |
1432 | } | |
1433 | ||
1434 | resp = (struct ti_sci_msg_resp_get_clock_num_parents *)xfer->xfer_buf; | |
1435 | ||
81f4458c | 1436 | if (!ti_sci_is_response_ack(resp)) { |
9f723220 | 1437 | ret = -ENODEV; |
81f4458c TK |
1438 | } else { |
1439 | if (resp->num_parents < 255) | |
1440 | *num_parents = resp->num_parents; | |
1441 | else | |
1442 | *num_parents = resp->num_parents_32; | |
1443 | } | |
9f723220 NM |
1444 | |
1445 | fail: | |
1446 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
1447 | ||
1448 | return ret; | |
1449 | } | |
1450 | ||
1451 | /** | |
1452 | * ti_sci_cmd_clk_get_match_freq() - Find a good match for frequency | |
1453 | * @handle: pointer to TI SCI handle | |
1454 | * @dev_id: Device identifier this request is for | |
1455 | * @clk_id: Clock identifier for the device for this request. | |
1456 | * Each device has it's own set of clock inputs. This indexes | |
1457 | * which clock input to modify. | |
1458 | * @min_freq: The minimum allowable frequency in Hz. This is the minimum | |
1459 | * allowable programmed frequency and does not account for clock | |
1460 | * tolerances and jitter. | |
1461 | * @target_freq: The target clock frequency in Hz. A frequency will be | |
1462 | * processed as close to this target frequency as possible. | |
1463 | * @max_freq: The maximum allowable frequency in Hz. This is the maximum | |
1464 | * allowable programmed frequency and does not account for clock | |
1465 | * tolerances and jitter. | |
1466 | * @match_freq: Frequency match in Hz response. | |
1467 | * | |
1468 | * Return: 0 if all went well, else returns appropriate error value. | |
1469 | */ | |
1470 | static int ti_sci_cmd_clk_get_match_freq(const struct ti_sci_handle *handle, | |
81f4458c | 1471 | u32 dev_id, u32 clk_id, u64 min_freq, |
9f723220 NM |
1472 | u64 target_freq, u64 max_freq, |
1473 | u64 *match_freq) | |
1474 | { | |
1475 | struct ti_sci_info *info; | |
1476 | struct ti_sci_msg_req_query_clock_freq *req; | |
1477 | struct ti_sci_msg_resp_query_clock_freq *resp; | |
1478 | struct ti_sci_xfer *xfer; | |
1479 | struct device *dev; | |
1480 | int ret = 0; | |
1481 | ||
1482 | if (IS_ERR(handle)) | |
1483 | return PTR_ERR(handle); | |
1484 | if (!handle || !match_freq) | |
1485 | return -EINVAL; | |
1486 | ||
1487 | info = handle_to_ti_sci_info(handle); | |
1488 | dev = info->dev; | |
1489 | ||
1490 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_QUERY_CLOCK_FREQ, | |
1491 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
1492 | sizeof(*req), sizeof(*resp)); | |
1493 | if (IS_ERR(xfer)) { | |
1494 | ret = PTR_ERR(xfer); | |
1495 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
1496 | return ret; | |
1497 | } | |
1498 | req = (struct ti_sci_msg_req_query_clock_freq *)xfer->xfer_buf; | |
1499 | req->dev_id = dev_id; | |
81f4458c TK |
1500 | if (clk_id < 255) { |
1501 | req->clk_id = clk_id; | |
1502 | } else { | |
1503 | req->clk_id = 255; | |
1504 | req->clk_id_32 = clk_id; | |
1505 | } | |
9f723220 NM |
1506 | req->min_freq_hz = min_freq; |
1507 | req->target_freq_hz = target_freq; | |
1508 | req->max_freq_hz = max_freq; | |
1509 | ||
1510 | ret = ti_sci_do_xfer(info, xfer); | |
1511 | if (ret) { | |
1512 | dev_err(dev, "Mbox send fail %d\n", ret); | |
1513 | goto fail; | |
1514 | } | |
1515 | ||
1516 | resp = (struct ti_sci_msg_resp_query_clock_freq *)xfer->xfer_buf; | |
1517 | ||
1518 | if (!ti_sci_is_response_ack(resp)) | |
1519 | ret = -ENODEV; | |
1520 | else | |
1521 | *match_freq = resp->freq_hz; | |
1522 | ||
1523 | fail: | |
1524 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
1525 | ||
1526 | return ret; | |
1527 | } | |
1528 | ||
1529 | /** | |
1530 | * ti_sci_cmd_clk_set_freq() - Set a frequency for clock | |
1531 | * @handle: pointer to TI SCI handle | |
1532 | * @dev_id: Device identifier this request is for | |
1533 | * @clk_id: Clock identifier for the device for this request. | |
1534 | * Each device has it's own set of clock inputs. This indexes | |
1535 | * which clock input to modify. | |
1536 | * @min_freq: The minimum allowable frequency in Hz. This is the minimum | |
1537 | * allowable programmed frequency and does not account for clock | |
1538 | * tolerances and jitter. | |
1539 | * @target_freq: The target clock frequency in Hz. A frequency will be | |
1540 | * processed as close to this target frequency as possible. | |
1541 | * @max_freq: The maximum allowable frequency in Hz. This is the maximum | |
1542 | * allowable programmed frequency and does not account for clock | |
1543 | * tolerances and jitter. | |
1544 | * | |
1545 | * Return: 0 if all went well, else returns appropriate error value. | |
1546 | */ | |
1547 | static int ti_sci_cmd_clk_set_freq(const struct ti_sci_handle *handle, | |
81f4458c | 1548 | u32 dev_id, u32 clk_id, u64 min_freq, |
9f723220 NM |
1549 | u64 target_freq, u64 max_freq) |
1550 | { | |
1551 | struct ti_sci_info *info; | |
1552 | struct ti_sci_msg_req_set_clock_freq *req; | |
1553 | struct ti_sci_msg_hdr *resp; | |
1554 | struct ti_sci_xfer *xfer; | |
1555 | struct device *dev; | |
1556 | int ret = 0; | |
1557 | ||
1558 | if (IS_ERR(handle)) | |
1559 | return PTR_ERR(handle); | |
1560 | if (!handle) | |
1561 | return -EINVAL; | |
1562 | ||
1563 | info = handle_to_ti_sci_info(handle); | |
1564 | dev = info->dev; | |
1565 | ||
1566 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CLOCK_FREQ, | |
1567 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
1568 | sizeof(*req), sizeof(*resp)); | |
1569 | if (IS_ERR(xfer)) { | |
1570 | ret = PTR_ERR(xfer); | |
1571 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
1572 | return ret; | |
1573 | } | |
1574 | req = (struct ti_sci_msg_req_set_clock_freq *)xfer->xfer_buf; | |
1575 | req->dev_id = dev_id; | |
81f4458c TK |
1576 | if (clk_id < 255) { |
1577 | req->clk_id = clk_id; | |
1578 | } else { | |
1579 | req->clk_id = 255; | |
1580 | req->clk_id_32 = clk_id; | |
1581 | } | |
9f723220 NM |
1582 | req->min_freq_hz = min_freq; |
1583 | req->target_freq_hz = target_freq; | |
1584 | req->max_freq_hz = max_freq; | |
1585 | ||
1586 | ret = ti_sci_do_xfer(info, xfer); | |
1587 | if (ret) { | |
1588 | dev_err(dev, "Mbox send fail %d\n", ret); | |
1589 | goto fail; | |
1590 | } | |
1591 | ||
1592 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; | |
1593 | ||
1594 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; | |
1595 | ||
1596 | fail: | |
1597 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
1598 | ||
1599 | return ret; | |
1600 | } | |
1601 | ||
1602 | /** | |
1603 | * ti_sci_cmd_clk_get_freq() - Get current frequency | |
1604 | * @handle: pointer to TI SCI handle | |
1605 | * @dev_id: Device identifier this request is for | |
1606 | * @clk_id: Clock identifier for the device for this request. | |
1607 | * Each device has it's own set of clock inputs. This indexes | |
1608 | * which clock input to modify. | |
1609 | * @freq: Currently frequency in Hz | |
1610 | * | |
1611 | * Return: 0 if all went well, else returns appropriate error value. | |
1612 | */ | |
1613 | static int ti_sci_cmd_clk_get_freq(const struct ti_sci_handle *handle, | |
81f4458c | 1614 | u32 dev_id, u32 clk_id, u64 *freq) |
9f723220 NM |
1615 | { |
1616 | struct ti_sci_info *info; | |
1617 | struct ti_sci_msg_req_get_clock_freq *req; | |
1618 | struct ti_sci_msg_resp_get_clock_freq *resp; | |
1619 | struct ti_sci_xfer *xfer; | |
1620 | struct device *dev; | |
1621 | int ret = 0; | |
1622 | ||
1623 | if (IS_ERR(handle)) | |
1624 | return PTR_ERR(handle); | |
1625 | if (!handle || !freq) | |
1626 | return -EINVAL; | |
1627 | ||
1628 | info = handle_to_ti_sci_info(handle); | |
1629 | dev = info->dev; | |
1630 | ||
1631 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_CLOCK_FREQ, | |
1632 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
1633 | sizeof(*req), sizeof(*resp)); | |
1634 | if (IS_ERR(xfer)) { | |
1635 | ret = PTR_ERR(xfer); | |
1636 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
1637 | return ret; | |
1638 | } | |
1639 | req = (struct ti_sci_msg_req_get_clock_freq *)xfer->xfer_buf; | |
1640 | req->dev_id = dev_id; | |
81f4458c TK |
1641 | if (clk_id < 255) { |
1642 | req->clk_id = clk_id; | |
1643 | } else { | |
1644 | req->clk_id = 255; | |
1645 | req->clk_id_32 = clk_id; | |
1646 | } | |
9f723220 NM |
1647 | |
1648 | ret = ti_sci_do_xfer(info, xfer); | |
1649 | if (ret) { | |
1650 | dev_err(dev, "Mbox send fail %d\n", ret); | |
1651 | goto fail; | |
1652 | } | |
1653 | ||
1654 | resp = (struct ti_sci_msg_resp_get_clock_freq *)xfer->xfer_buf; | |
1655 | ||
1656 | if (!ti_sci_is_response_ack(resp)) | |
1657 | ret = -ENODEV; | |
1658 | else | |
1659 | *freq = resp->freq_hz; | |
1660 | ||
1661 | fail: | |
1662 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
1663 | ||
1664 | return ret; | |
1665 | } | |
1666 | ||
912cffb4 NM |
1667 | static int ti_sci_cmd_core_reboot(const struct ti_sci_handle *handle) |
1668 | { | |
1669 | struct ti_sci_info *info; | |
1670 | struct ti_sci_msg_req_reboot *req; | |
1671 | struct ti_sci_msg_hdr *resp; | |
1672 | struct ti_sci_xfer *xfer; | |
1673 | struct device *dev; | |
1674 | int ret = 0; | |
1675 | ||
1676 | if (IS_ERR(handle)) | |
1677 | return PTR_ERR(handle); | |
1678 | if (!handle) | |
1679 | return -EINVAL; | |
1680 | ||
1681 | info = handle_to_ti_sci_info(handle); | |
1682 | dev = info->dev; | |
1683 | ||
1684 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SYS_RESET, | |
1685 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
1686 | sizeof(*req), sizeof(*resp)); | |
1687 | if (IS_ERR(xfer)) { | |
1688 | ret = PTR_ERR(xfer); | |
1689 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
1690 | return ret; | |
1691 | } | |
1692 | req = (struct ti_sci_msg_req_reboot *)xfer->xfer_buf; | |
1693 | ||
1694 | ret = ti_sci_do_xfer(info, xfer); | |
1695 | if (ret) { | |
1696 | dev_err(dev, "Mbox send fail %d\n", ret); | |
1697 | goto fail; | |
1698 | } | |
1699 | ||
1700 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; | |
1701 | ||
1702 | if (!ti_sci_is_response_ack(resp)) | |
1703 | ret = -ENODEV; | |
1704 | else | |
1705 | ret = 0; | |
1706 | ||
1707 | fail: | |
1708 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
1709 | ||
1710 | return ret; | |
1711 | } | |
1712 | ||
9c19fb68 LV |
1713 | static int ti_sci_get_resource_type(struct ti_sci_info *info, u16 dev_id, |
1714 | u16 *type) | |
1715 | { | |
1716 | struct ti_sci_rm_type_map *rm_type_map = info->desc->rm_type_map; | |
1717 | bool found = false; | |
1718 | int i; | |
1719 | ||
1720 | /* If map is not provided then assume dev_id is used as type */ | |
1721 | if (!rm_type_map) { | |
1722 | *type = dev_id; | |
1723 | return 0; | |
1724 | } | |
1725 | ||
1726 | for (i = 0; rm_type_map[i].dev_id; i++) { | |
1727 | if (rm_type_map[i].dev_id == dev_id) { | |
1728 | *type = rm_type_map[i].type; | |
1729 | found = true; | |
1730 | break; | |
1731 | } | |
1732 | } | |
1733 | ||
1734 | if (!found) | |
1735 | return -EINVAL; | |
1736 | ||
1737 | return 0; | |
1738 | } | |
1739 | ||
1740 | /** | |
1741 | * ti_sci_get_resource_range - Helper to get a range of resources assigned | |
1742 | * to a host. Resource is uniquely identified by | |
1743 | * type and subtype. | |
1744 | * @handle: Pointer to TISCI handle. | |
1745 | * @dev_id: TISCI device ID. | |
1746 | * @subtype: Resource assignment subtype that is being requested | |
1747 | * from the given device. | |
1748 | * @s_host: Host processor ID to which the resources are allocated | |
1749 | * @range_start: Start index of the resource range | |
1750 | * @range_num: Number of resources in the range | |
1751 | * | |
1752 | * Return: 0 if all went fine, else return appropriate error. | |
1753 | */ | |
1754 | static int ti_sci_get_resource_range(const struct ti_sci_handle *handle, | |
1755 | u32 dev_id, u8 subtype, u8 s_host, | |
1756 | u16 *range_start, u16 *range_num) | |
1757 | { | |
1758 | struct ti_sci_msg_resp_get_resource_range *resp; | |
1759 | struct ti_sci_msg_req_get_resource_range *req; | |
1760 | struct ti_sci_xfer *xfer; | |
1761 | struct ti_sci_info *info; | |
1762 | struct device *dev; | |
1763 | u16 type; | |
1764 | int ret = 0; | |
1765 | ||
1766 | if (IS_ERR(handle)) | |
1767 | return PTR_ERR(handle); | |
1768 | if (!handle) | |
1769 | return -EINVAL; | |
1770 | ||
1771 | info = handle_to_ti_sci_info(handle); | |
1772 | dev = info->dev; | |
1773 | ||
1774 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_RESOURCE_RANGE, | |
1775 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
1776 | sizeof(*req), sizeof(*resp)); | |
1777 | if (IS_ERR(xfer)) { | |
1778 | ret = PTR_ERR(xfer); | |
1779 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
1780 | return ret; | |
1781 | } | |
1782 | ||
1783 | ret = ti_sci_get_resource_type(info, dev_id, &type); | |
1784 | if (ret) { | |
1785 | dev_err(dev, "rm type lookup failed for %u\n", dev_id); | |
1786 | goto fail; | |
1787 | } | |
1788 | ||
1789 | req = (struct ti_sci_msg_req_get_resource_range *)xfer->xfer_buf; | |
1790 | req->secondary_host = s_host; | |
1791 | req->type = type & MSG_RM_RESOURCE_TYPE_MASK; | |
1792 | req->subtype = subtype & MSG_RM_RESOURCE_SUBTYPE_MASK; | |
1793 | ||
1794 | ret = ti_sci_do_xfer(info, xfer); | |
1795 | if (ret) { | |
1796 | dev_err(dev, "Mbox send fail %d\n", ret); | |
1797 | goto fail; | |
1798 | } | |
1799 | ||
1800 | resp = (struct ti_sci_msg_resp_get_resource_range *)xfer->xfer_buf; | |
1801 | ||
1802 | if (!ti_sci_is_response_ack(resp)) { | |
1803 | ret = -ENODEV; | |
1804 | } else if (!resp->range_start && !resp->range_num) { | |
1805 | ret = -ENODEV; | |
1806 | } else { | |
1807 | *range_start = resp->range_start; | |
1808 | *range_num = resp->range_num; | |
1809 | }; | |
1810 | ||
1811 | fail: | |
1812 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
1813 | ||
1814 | return ret; | |
1815 | } | |
1816 | ||
1817 | /** | |
1818 | * ti_sci_cmd_get_resource_range - Get a range of resources assigned to host | |
1819 | * that is same as ti sci interface host. | |
1820 | * @handle: Pointer to TISCI handle. | |
1821 | * @dev_id: TISCI device ID. | |
1822 | * @subtype: Resource assignment subtype that is being requested | |
1823 | * from the given device. | |
1824 | * @range_start: Start index of the resource range | |
1825 | * @range_num: Number of resources in the range | |
1826 | * | |
1827 | * Return: 0 if all went fine, else return appropriate error. | |
1828 | */ | |
1829 | static int ti_sci_cmd_get_resource_range(const struct ti_sci_handle *handle, | |
1830 | u32 dev_id, u8 subtype, | |
1831 | u16 *range_start, u16 *range_num) | |
1832 | { | |
1833 | return ti_sci_get_resource_range(handle, dev_id, subtype, | |
1834 | TI_SCI_IRQ_SECONDARY_HOST_INVALID, | |
1835 | range_start, range_num); | |
1836 | } | |
1837 | ||
1838 | /** | |
1839 | * ti_sci_cmd_get_resource_range_from_shost - Get a range of resources | |
1840 | * assigned to a specified host. | |
1841 | * @handle: Pointer to TISCI handle. | |
1842 | * @dev_id: TISCI device ID. | |
1843 | * @subtype: Resource assignment subtype that is being requested | |
1844 | * from the given device. | |
1845 | * @s_host: Host processor ID to which the resources are allocated | |
1846 | * @range_start: Start index of the resource range | |
1847 | * @range_num: Number of resources in the range | |
1848 | * | |
1849 | * Return: 0 if all went fine, else return appropriate error. | |
1850 | */ | |
1851 | static | |
1852 | int ti_sci_cmd_get_resource_range_from_shost(const struct ti_sci_handle *handle, | |
1853 | u32 dev_id, u8 subtype, u8 s_host, | |
1854 | u16 *range_start, u16 *range_num) | |
1855 | { | |
1856 | return ti_sci_get_resource_range(handle, dev_id, subtype, s_host, | |
1857 | range_start, range_num); | |
1858 | } | |
1859 | ||
997b001f LV |
1860 | /** |
1861 | * ti_sci_manage_irq() - Helper api to configure/release the irq route between | |
1862 | * the requested source and destination | |
1863 | * @handle: Pointer to TISCI handle. | |
1864 | * @valid_params: Bit fields defining the validity of certain params | |
1865 | * @src_id: Device ID of the IRQ source | |
1866 | * @src_index: IRQ source index within the source device | |
1867 | * @dst_id: Device ID of the IRQ destination | |
1868 | * @dst_host_irq: IRQ number of the destination device | |
1869 | * @ia_id: Device ID of the IA, if the IRQ flows through this IA | |
1870 | * @vint: Virtual interrupt to be used within the IA | |
1871 | * @global_event: Global event number to be used for the requesting event | |
1872 | * @vint_status_bit: Virtual interrupt status bit to be used for the event | |
1873 | * @s_host: Secondary host ID to which the irq/event is being | |
1874 | * requested for. | |
1875 | * @type: Request type irq set or release. | |
1876 | * | |
1877 | * Return: 0 if all went fine, else return appropriate error. | |
1878 | */ | |
1879 | static int ti_sci_manage_irq(const struct ti_sci_handle *handle, | |
1880 | u32 valid_params, u16 src_id, u16 src_index, | |
1881 | u16 dst_id, u16 dst_host_irq, u16 ia_id, u16 vint, | |
1882 | u16 global_event, u8 vint_status_bit, u8 s_host, | |
1883 | u16 type) | |
1884 | { | |
1885 | struct ti_sci_msg_req_manage_irq *req; | |
1886 | struct ti_sci_msg_hdr *resp; | |
1887 | struct ti_sci_xfer *xfer; | |
1888 | struct ti_sci_info *info; | |
1889 | struct device *dev; | |
1890 | int ret = 0; | |
1891 | ||
1892 | if (IS_ERR(handle)) | |
1893 | return PTR_ERR(handle); | |
1894 | if (!handle) | |
1895 | return -EINVAL; | |
1896 | ||
1897 | info = handle_to_ti_sci_info(handle); | |
1898 | dev = info->dev; | |
1899 | ||
1900 | xfer = ti_sci_get_one_xfer(info, type, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
1901 | sizeof(*req), sizeof(*resp)); | |
1902 | if (IS_ERR(xfer)) { | |
1903 | ret = PTR_ERR(xfer); | |
1904 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
1905 | return ret; | |
1906 | } | |
1907 | req = (struct ti_sci_msg_req_manage_irq *)xfer->xfer_buf; | |
1908 | req->valid_params = valid_params; | |
1909 | req->src_id = src_id; | |
1910 | req->src_index = src_index; | |
1911 | req->dst_id = dst_id; | |
1912 | req->dst_host_irq = dst_host_irq; | |
1913 | req->ia_id = ia_id; | |
1914 | req->vint = vint; | |
1915 | req->global_event = global_event; | |
1916 | req->vint_status_bit = vint_status_bit; | |
1917 | req->secondary_host = s_host; | |
1918 | ||
1919 | ret = ti_sci_do_xfer(info, xfer); | |
1920 | if (ret) { | |
1921 | dev_err(dev, "Mbox send fail %d\n", ret); | |
1922 | goto fail; | |
1923 | } | |
1924 | ||
1925 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; | |
1926 | ||
1927 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; | |
1928 | ||
1929 | fail: | |
1930 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
1931 | ||
1932 | return ret; | |
1933 | } | |
1934 | ||
1935 | /** | |
1936 | * ti_sci_set_irq() - Helper api to configure the irq route between the | |
1937 | * requested source and destination | |
1938 | * @handle: Pointer to TISCI handle. | |
1939 | * @valid_params: Bit fields defining the validity of certain params | |
1940 | * @src_id: Device ID of the IRQ source | |
1941 | * @src_index: IRQ source index within the source device | |
1942 | * @dst_id: Device ID of the IRQ destination | |
1943 | * @dst_host_irq: IRQ number of the destination device | |
1944 | * @ia_id: Device ID of the IA, if the IRQ flows through this IA | |
1945 | * @vint: Virtual interrupt to be used within the IA | |
1946 | * @global_event: Global event number to be used for the requesting event | |
1947 | * @vint_status_bit: Virtual interrupt status bit to be used for the event | |
1948 | * @s_host: Secondary host ID to which the irq/event is being | |
1949 | * requested for. | |
1950 | * | |
1951 | * Return: 0 if all went fine, else return appropriate error. | |
1952 | */ | |
1953 | static int ti_sci_set_irq(const struct ti_sci_handle *handle, u32 valid_params, | |
1954 | u16 src_id, u16 src_index, u16 dst_id, | |
1955 | u16 dst_host_irq, u16 ia_id, u16 vint, | |
1956 | u16 global_event, u8 vint_status_bit, u8 s_host) | |
1957 | { | |
1958 | 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", | |
1959 | __func__, valid_params, src_id, src_index, | |
1960 | dst_id, dst_host_irq, ia_id, vint, global_event, | |
1961 | vint_status_bit); | |
1962 | ||
1963 | return ti_sci_manage_irq(handle, valid_params, src_id, src_index, | |
1964 | dst_id, dst_host_irq, ia_id, vint, | |
1965 | global_event, vint_status_bit, s_host, | |
1966 | TI_SCI_MSG_SET_IRQ); | |
1967 | } | |
1968 | ||
1969 | /** | |
1970 | * ti_sci_free_irq() - Helper api to free the irq route between the | |
1971 | * requested source and destination | |
1972 | * @handle: Pointer to TISCI handle. | |
1973 | * @valid_params: Bit fields defining the validity of certain params | |
1974 | * @src_id: Device ID of the IRQ source | |
1975 | * @src_index: IRQ source index within the source device | |
1976 | * @dst_id: Device ID of the IRQ destination | |
1977 | * @dst_host_irq: IRQ number of the destination device | |
1978 | * @ia_id: Device ID of the IA, if the IRQ flows through this IA | |
1979 | * @vint: Virtual interrupt to be used within the IA | |
1980 | * @global_event: Global event number to be used for the requesting event | |
1981 | * @vint_status_bit: Virtual interrupt status bit to be used for the event | |
1982 | * @s_host: Secondary host ID to which the irq/event is being | |
1983 | * requested for. | |
1984 | * | |
1985 | * Return: 0 if all went fine, else return appropriate error. | |
1986 | */ | |
1987 | static int ti_sci_free_irq(const struct ti_sci_handle *handle, u32 valid_params, | |
1988 | u16 src_id, u16 src_index, u16 dst_id, | |
1989 | u16 dst_host_irq, u16 ia_id, u16 vint, | |
1990 | u16 global_event, u8 vint_status_bit, u8 s_host) | |
1991 | { | |
1992 | 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", | |
1993 | __func__, valid_params, src_id, src_index, | |
1994 | dst_id, dst_host_irq, ia_id, vint, global_event, | |
1995 | vint_status_bit); | |
1996 | ||
1997 | return ti_sci_manage_irq(handle, valid_params, src_id, src_index, | |
1998 | dst_id, dst_host_irq, ia_id, vint, | |
1999 | global_event, vint_status_bit, s_host, | |
2000 | TI_SCI_MSG_FREE_IRQ); | |
2001 | } | |
2002 | ||
2003 | /** | |
2004 | * ti_sci_cmd_set_irq() - Configure a host irq route between the requested | |
2005 | * source and destination. | |
2006 | * @handle: Pointer to TISCI handle. | |
2007 | * @src_id: Device ID of the IRQ source | |
2008 | * @src_index: IRQ source index within the source device | |
2009 | * @dst_id: Device ID of the IRQ destination | |
2010 | * @dst_host_irq: IRQ number of the destination device | |
2011 | * @vint_irq: Boolean specifying if this interrupt belongs to | |
2012 | * Interrupt Aggregator. | |
2013 | * | |
2014 | * Return: 0 if all went fine, else return appropriate error. | |
2015 | */ | |
2016 | static int ti_sci_cmd_set_irq(const struct ti_sci_handle *handle, u16 src_id, | |
2017 | u16 src_index, u16 dst_id, u16 dst_host_irq) | |
2018 | { | |
2019 | u32 valid_params = MSG_FLAG_DST_ID_VALID | MSG_FLAG_DST_HOST_IRQ_VALID; | |
2020 | ||
2021 | return ti_sci_set_irq(handle, valid_params, src_id, src_index, dst_id, | |
2022 | dst_host_irq, 0, 0, 0, 0, 0); | |
2023 | } | |
2024 | ||
2025 | /** | |
2026 | * ti_sci_cmd_set_event_map() - Configure an event based irq route between the | |
2027 | * requested source and Interrupt Aggregator. | |
2028 | * @handle: Pointer to TISCI handle. | |
2029 | * @src_id: Device ID of the IRQ source | |
2030 | * @src_index: IRQ source index within the source device | |
2031 | * @ia_id: Device ID of the IA, if the IRQ flows through this IA | |
2032 | * @vint: Virtual interrupt to be used within the IA | |
2033 | * @global_event: Global event number to be used for the requesting event | |
2034 | * @vint_status_bit: Virtual interrupt status bit to be used for the event | |
2035 | * | |
2036 | * Return: 0 if all went fine, else return appropriate error. | |
2037 | */ | |
2038 | static int ti_sci_cmd_set_event_map(const struct ti_sci_handle *handle, | |
2039 | u16 src_id, u16 src_index, u16 ia_id, | |
2040 | u16 vint, u16 global_event, | |
2041 | u8 vint_status_bit) | |
2042 | { | |
2043 | u32 valid_params = MSG_FLAG_IA_ID_VALID | MSG_FLAG_VINT_VALID | | |
2044 | MSG_FLAG_GLB_EVNT_VALID | | |
2045 | MSG_FLAG_VINT_STS_BIT_VALID; | |
2046 | ||
2047 | return ti_sci_set_irq(handle, valid_params, src_id, src_index, 0, 0, | |
2048 | ia_id, vint, global_event, vint_status_bit, 0); | |
2049 | } | |
2050 | ||
2051 | /** | |
2052 | * ti_sci_cmd_free_irq() - Free a host irq route between the between the | |
2053 | * requested source and destination. | |
2054 | * @handle: Pointer to TISCI handle. | |
2055 | * @src_id: Device ID of the IRQ source | |
2056 | * @src_index: IRQ source index within the source device | |
2057 | * @dst_id: Device ID of the IRQ destination | |
2058 | * @dst_host_irq: IRQ number of the destination device | |
2059 | * @vint_irq: Boolean specifying if this interrupt belongs to | |
2060 | * Interrupt Aggregator. | |
2061 | * | |
2062 | * Return: 0 if all went fine, else return appropriate error. | |
2063 | */ | |
2064 | static int ti_sci_cmd_free_irq(const struct ti_sci_handle *handle, u16 src_id, | |
2065 | u16 src_index, u16 dst_id, u16 dst_host_irq) | |
2066 | { | |
2067 | u32 valid_params = MSG_FLAG_DST_ID_VALID | MSG_FLAG_DST_HOST_IRQ_VALID; | |
2068 | ||
2069 | return ti_sci_free_irq(handle, valid_params, src_id, src_index, dst_id, | |
2070 | dst_host_irq, 0, 0, 0, 0, 0); | |
2071 | } | |
2072 | ||
2073 | /** | |
2074 | * ti_sci_cmd_free_event_map() - Free an event map between the requested source | |
2075 | * and Interrupt Aggregator. | |
2076 | * @handle: Pointer to TISCI handle. | |
2077 | * @src_id: Device ID of the IRQ source | |
2078 | * @src_index: IRQ source index within the source device | |
2079 | * @ia_id: Device ID of the IA, if the IRQ flows through this IA | |
2080 | * @vint: Virtual interrupt to be used within the IA | |
2081 | * @global_event: Global event number to be used for the requesting event | |
2082 | * @vint_status_bit: Virtual interrupt status bit to be used for the event | |
2083 | * | |
2084 | * Return: 0 if all went fine, else return appropriate error. | |
2085 | */ | |
2086 | static int ti_sci_cmd_free_event_map(const struct ti_sci_handle *handle, | |
2087 | u16 src_id, u16 src_index, u16 ia_id, | |
2088 | u16 vint, u16 global_event, | |
2089 | u8 vint_status_bit) | |
2090 | { | |
2091 | u32 valid_params = MSG_FLAG_IA_ID_VALID | | |
2092 | MSG_FLAG_VINT_VALID | MSG_FLAG_GLB_EVNT_VALID | | |
2093 | MSG_FLAG_VINT_STS_BIT_VALID; | |
2094 | ||
2095 | return ti_sci_free_irq(handle, valid_params, src_id, src_index, 0, 0, | |
2096 | ia_id, vint, global_event, vint_status_bit, 0); | |
2097 | } | |
2098 | ||
68608b5e PU |
2099 | /** |
2100 | * ti_sci_cmd_ring_config() - configure RA ring | |
2101 | * @handle: Pointer to TI SCI handle. | |
2102 | * @valid_params: Bitfield defining validity of ring configuration | |
2103 | * parameters | |
2104 | * @nav_id: Device ID of Navigator Subsystem from which the ring is | |
2105 | * allocated | |
2106 | * @index: Ring index | |
2107 | * @addr_lo: The ring base address lo 32 bits | |
2108 | * @addr_hi: The ring base address hi 32 bits | |
2109 | * @count: Number of ring elements | |
2110 | * @mode: The mode of the ring | |
2111 | * @size: The ring element size. | |
2112 | * @order_id: Specifies the ring's bus order ID | |
2113 | * | |
2114 | * Return: 0 if all went well, else returns appropriate error value. | |
2115 | * | |
2116 | * See @ti_sci_msg_rm_ring_cfg_req for more info. | |
9e7d756d | 2117 | */ |
68608b5e PU |
2118 | static int ti_sci_cmd_ring_config(const struct ti_sci_handle *handle, |
2119 | u32 valid_params, u16 nav_id, u16 index, | |
2120 | u32 addr_lo, u32 addr_hi, u32 count, | |
2121 | u8 mode, u8 size, u8 order_id) | |
9e7d756d | 2122 | { |
68608b5e PU |
2123 | struct ti_sci_msg_rm_ring_cfg_req *req; |
2124 | struct ti_sci_msg_hdr *resp; | |
2125 | struct ti_sci_xfer *xfer; | |
2126 | struct ti_sci_info *info; | |
2127 | struct device *dev; | |
2128 | int ret = 0; | |
9e7d756d | 2129 | |
68608b5e PU |
2130 | if (IS_ERR_OR_NULL(handle)) |
2131 | return -EINVAL; | |
9f723220 | 2132 | |
68608b5e PU |
2133 | info = handle_to_ti_sci_info(handle); |
2134 | dev = info->dev; | |
9f723220 | 2135 | |
68608b5e PU |
2136 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_RING_CFG, |
2137 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
2138 | sizeof(*req), sizeof(*resp)); | |
2139 | if (IS_ERR(xfer)) { | |
2140 | ret = PTR_ERR(xfer); | |
4c960505 | 2141 | dev_err(dev, "RM_RA:Message config failed(%d)\n", ret); |
68608b5e PU |
2142 | return ret; |
2143 | } | |
2144 | req = (struct ti_sci_msg_rm_ring_cfg_req *)xfer->xfer_buf; | |
2145 | req->valid_params = valid_params; | |
2146 | req->nav_id = nav_id; | |
2147 | req->index = index; | |
2148 | req->addr_lo = addr_lo; | |
2149 | req->addr_hi = addr_hi; | |
2150 | req->count = count; | |
2151 | req->mode = mode; | |
2152 | req->size = size; | |
2153 | req->order_id = order_id; | |
9f723220 | 2154 | |
68608b5e PU |
2155 | ret = ti_sci_do_xfer(info, xfer); |
2156 | if (ret) { | |
4c960505 | 2157 | dev_err(dev, "RM_RA:Mbox config send fail %d\n", ret); |
68608b5e PU |
2158 | goto fail; |
2159 | } | |
9c19fb68 | 2160 | |
68608b5e PU |
2161 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; |
2162 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; | |
997b001f | 2163 | |
68608b5e PU |
2164 | fail: |
2165 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
4c960505 | 2166 | dev_dbg(dev, "RM_RA:config ring %u ret:%d\n", index, ret); |
68608b5e | 2167 | return ret; |
9e7d756d NM |
2168 | } |
2169 | ||
aa276781 | 2170 | /** |
68608b5e PU |
2171 | * ti_sci_cmd_ring_get_config() - get RA ring configuration |
2172 | * @handle: Pointer to TI SCI handle. | |
2173 | * @nav_id: Device ID of Navigator Subsystem from which the ring is | |
2174 | * allocated | |
2175 | * @index: Ring index | |
2176 | * @addr_lo: Returns ring's base address lo 32 bits | |
2177 | * @addr_hi: Returns ring's base address hi 32 bits | |
2178 | * @count: Returns number of ring elements | |
2179 | * @mode: Returns mode of the ring | |
2180 | * @size: Returns ring element size | |
2181 | * @order_id: Returns ring's bus order ID | |
aa276781 | 2182 | * |
68608b5e PU |
2183 | * Return: 0 if all went well, else returns appropriate error value. |
2184 | * | |
2185 | * See @ti_sci_msg_rm_ring_get_cfg_req for more info. | |
aa276781 | 2186 | */ |
68608b5e PU |
2187 | static int ti_sci_cmd_ring_get_config(const struct ti_sci_handle *handle, |
2188 | u32 nav_id, u32 index, u8 *mode, | |
2189 | u32 *addr_lo, u32 *addr_hi, | |
2190 | u32 *count, u8 *size, u8 *order_id) | |
aa276781 | 2191 | { |
68608b5e PU |
2192 | struct ti_sci_msg_rm_ring_get_cfg_resp *resp; |
2193 | struct ti_sci_msg_rm_ring_get_cfg_req *req; | |
2194 | struct ti_sci_xfer *xfer; | |
aa276781 | 2195 | struct ti_sci_info *info; |
68608b5e PU |
2196 | struct device *dev; |
2197 | int ret = 0; | |
aa276781 | 2198 | |
68608b5e PU |
2199 | if (IS_ERR_OR_NULL(handle)) |
2200 | return -EINVAL; | |
2201 | ||
2202 | info = handle_to_ti_sci_info(handle); | |
2203 | dev = info->dev; | |
2204 | ||
2205 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_RING_GET_CFG, | |
2206 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
2207 | sizeof(*req), sizeof(*resp)); | |
2208 | if (IS_ERR(xfer)) { | |
2209 | ret = PTR_ERR(xfer); | |
4c960505 | 2210 | dev_err(dev, |
68608b5e PU |
2211 | "RM_RA:Message get config failed(%d)\n", ret); |
2212 | return ret; | |
aa276781 | 2213 | } |
68608b5e PU |
2214 | req = (struct ti_sci_msg_rm_ring_get_cfg_req *)xfer->xfer_buf; |
2215 | req->nav_id = nav_id; | |
2216 | req->index = index; | |
aa276781 | 2217 | |
68608b5e PU |
2218 | ret = ti_sci_do_xfer(info, xfer); |
2219 | if (ret) { | |
4c960505 | 2220 | dev_err(dev, "RM_RA:Mbox get config send fail %d\n", ret); |
68608b5e | 2221 | goto fail; |
aa276781 | 2222 | } |
aa276781 | 2223 | |
68608b5e | 2224 | resp = (struct ti_sci_msg_rm_ring_get_cfg_resp *)xfer->xfer_buf; |
aa276781 | 2225 | |
68608b5e PU |
2226 | if (!ti_sci_is_response_ack(resp)) { |
2227 | ret = -ENODEV; | |
2228 | } else { | |
2229 | if (mode) | |
2230 | *mode = resp->mode; | |
2231 | if (addr_lo) | |
2232 | *addr_lo = resp->addr_lo; | |
2233 | if (addr_hi) | |
2234 | *addr_hi = resp->addr_hi; | |
2235 | if (count) | |
2236 | *count = resp->count; | |
2237 | if (size) | |
2238 | *size = resp->size; | |
2239 | if (order_id) | |
2240 | *order_id = resp->order_id; | |
2241 | }; | |
2242 | ||
2243 | fail: | |
2244 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
4c960505 | 2245 | dev_dbg(dev, "RM_RA:get config ring %u ret:%d\n", index, ret); |
68608b5e | 2246 | return ret; |
aa276781 | 2247 | } |
aa276781 NM |
2248 | |
2249 | /** | |
68608b5e PU |
2250 | * ti_sci_cmd_rm_psil_pair() - Pair PSI-L source to destination thread |
2251 | * @handle: Pointer to TI SCI handle. | |
2252 | * @nav_id: Device ID of Navigator Subsystem which should be used for | |
2253 | * pairing | |
2254 | * @src_thread: Source PSI-L thread ID | |
2255 | * @dst_thread: Destination PSI-L thread ID | |
aa276781 | 2256 | * |
68608b5e | 2257 | * Return: 0 if all went well, else returns appropriate error value. |
aa276781 | 2258 | */ |
68608b5e PU |
2259 | static int ti_sci_cmd_rm_psil_pair(const struct ti_sci_handle *handle, |
2260 | u32 nav_id, u32 src_thread, u32 dst_thread) | |
aa276781 | 2261 | { |
68608b5e PU |
2262 | struct ti_sci_msg_psil_pair *req; |
2263 | struct ti_sci_msg_hdr *resp; | |
2264 | struct ti_sci_xfer *xfer; | |
aa276781 | 2265 | struct ti_sci_info *info; |
68608b5e PU |
2266 | struct device *dev; |
2267 | int ret = 0; | |
aa276781 NM |
2268 | |
2269 | if (IS_ERR(handle)) | |
2270 | return PTR_ERR(handle); | |
2271 | if (!handle) | |
2272 | return -EINVAL; | |
2273 | ||
2274 | info = handle_to_ti_sci_info(handle); | |
68608b5e | 2275 | dev = info->dev; |
aa276781 | 2276 | |
68608b5e PU |
2277 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_PSIL_PAIR, |
2278 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
2279 | sizeof(*req), sizeof(*resp)); | |
2280 | if (IS_ERR(xfer)) { | |
2281 | ret = PTR_ERR(xfer); | |
2282 | dev_err(dev, "RM_PSIL:Message reconfig failed(%d)\n", ret); | |
2283 | return ret; | |
2284 | } | |
2285 | req = (struct ti_sci_msg_psil_pair *)xfer->xfer_buf; | |
2286 | req->nav_id = nav_id; | |
2287 | req->src_thread = src_thread; | |
2288 | req->dst_thread = dst_thread; | |
aa276781 | 2289 | |
68608b5e PU |
2290 | ret = ti_sci_do_xfer(info, xfer); |
2291 | if (ret) { | |
2292 | dev_err(dev, "RM_PSIL:Mbox send fail %d\n", ret); | |
2293 | goto fail; | |
2294 | } | |
aa276781 | 2295 | |
68608b5e PU |
2296 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; |
2297 | ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL; | |
2298 | ||
2299 | fail: | |
2300 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
2301 | ||
2302 | return ret; | |
aa276781 NM |
2303 | } |
2304 | ||
2305 | /** | |
68608b5e PU |
2306 | * ti_sci_cmd_rm_psil_unpair() - Unpair PSI-L source from destination thread |
2307 | * @handle: Pointer to TI SCI handle. | |
2308 | * @nav_id: Device ID of Navigator Subsystem which should be used for | |
2309 | * unpairing | |
2310 | * @src_thread: Source PSI-L thread ID | |
2311 | * @dst_thread: Destination PSI-L thread ID | |
aa276781 | 2312 | * |
68608b5e | 2313 | * Return: 0 if all went well, else returns appropriate error value. |
aa276781 | 2314 | */ |
68608b5e PU |
2315 | static int ti_sci_cmd_rm_psil_unpair(const struct ti_sci_handle *handle, |
2316 | u32 nav_id, u32 src_thread, u32 dst_thread) | |
aa276781 | 2317 | { |
68608b5e PU |
2318 | struct ti_sci_msg_psil_unpair *req; |
2319 | struct ti_sci_msg_hdr *resp; | |
2320 | struct ti_sci_xfer *xfer; | |
2321 | struct ti_sci_info *info; | |
2322 | struct device *dev; | |
2323 | int ret = 0; | |
aa276781 | 2324 | |
68608b5e PU |
2325 | if (IS_ERR(handle)) |
2326 | return PTR_ERR(handle); | |
2327 | if (!handle) | |
2328 | return -EINVAL; | |
aa276781 | 2329 | |
68608b5e PU |
2330 | info = handle_to_ti_sci_info(handle); |
2331 | dev = info->dev; | |
2332 | ||
2333 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_PSIL_UNPAIR, | |
2334 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
2335 | sizeof(*req), sizeof(*resp)); | |
2336 | if (IS_ERR(xfer)) { | |
2337 | ret = PTR_ERR(xfer); | |
2338 | dev_err(dev, "RM_PSIL:Message reconfig failed(%d)\n", ret); | |
2339 | return ret; | |
aa276781 | 2340 | } |
68608b5e PU |
2341 | req = (struct ti_sci_msg_psil_unpair *)xfer->xfer_buf; |
2342 | req->nav_id = nav_id; | |
2343 | req->src_thread = src_thread; | |
2344 | req->dst_thread = dst_thread; | |
aa276781 | 2345 | |
68608b5e PU |
2346 | ret = ti_sci_do_xfer(info, xfer); |
2347 | if (ret) { | |
2348 | dev_err(dev, "RM_PSIL:Mbox send fail %d\n", ret); | |
2349 | goto fail; | |
2350 | } | |
2351 | ||
2352 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; | |
2353 | ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL; | |
2354 | ||
2355 | fail: | |
2356 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
2357 | ||
2358 | return ret; | |
aa276781 | 2359 | } |
aa276781 | 2360 | |
905c3047 | 2361 | /** |
68608b5e PU |
2362 | * ti_sci_cmd_rm_udmap_tx_ch_cfg() - Configure a UDMAP TX channel |
2363 | * @handle: Pointer to TI SCI handle. | |
2364 | * @params: Pointer to ti_sci_msg_rm_udmap_tx_ch_cfg TX channel config | |
2365 | * structure | |
905c3047 | 2366 | * |
68608b5e PU |
2367 | * Return: 0 if all went well, else returns appropriate error value. |
2368 | * | |
2369 | * See @ti_sci_msg_rm_udmap_tx_ch_cfg and @ti_sci_msg_rm_udmap_tx_ch_cfg_req for | |
2370 | * more info. | |
905c3047 | 2371 | */ |
68608b5e PU |
2372 | static int ti_sci_cmd_rm_udmap_tx_ch_cfg(const struct ti_sci_handle *handle, |
2373 | const struct ti_sci_msg_rm_udmap_tx_ch_cfg *params) | |
905c3047 | 2374 | { |
68608b5e PU |
2375 | struct ti_sci_msg_rm_udmap_tx_ch_cfg_req *req; |
2376 | struct ti_sci_msg_hdr *resp; | |
2377 | struct ti_sci_xfer *xfer; | |
905c3047 | 2378 | struct ti_sci_info *info; |
68608b5e PU |
2379 | struct device *dev; |
2380 | int ret = 0; | |
905c3047 | 2381 | |
68608b5e PU |
2382 | if (IS_ERR_OR_NULL(handle)) |
2383 | return -EINVAL; | |
2384 | ||
2385 | info = handle_to_ti_sci_info(handle); | |
2386 | dev = info->dev; | |
2387 | ||
2388 | xfer = ti_sci_get_one_xfer(info, TISCI_MSG_RM_UDMAP_TX_CH_CFG, | |
2389 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
2390 | sizeof(*req), sizeof(*resp)); | |
2391 | if (IS_ERR(xfer)) { | |
2392 | ret = PTR_ERR(xfer); | |
4c960505 | 2393 | dev_err(dev, "Message TX_CH_CFG alloc failed(%d)\n", ret); |
68608b5e PU |
2394 | return ret; |
2395 | } | |
2396 | req = (struct ti_sci_msg_rm_udmap_tx_ch_cfg_req *)xfer->xfer_buf; | |
2397 | req->valid_params = params->valid_params; | |
2398 | req->nav_id = params->nav_id; | |
2399 | req->index = params->index; | |
2400 | req->tx_pause_on_err = params->tx_pause_on_err; | |
2401 | req->tx_filt_einfo = params->tx_filt_einfo; | |
2402 | req->tx_filt_pswords = params->tx_filt_pswords; | |
2403 | req->tx_atype = params->tx_atype; | |
2404 | req->tx_chan_type = params->tx_chan_type; | |
2405 | req->tx_supr_tdpkt = params->tx_supr_tdpkt; | |
2406 | req->tx_fetch_size = params->tx_fetch_size; | |
2407 | req->tx_credit_count = params->tx_credit_count; | |
2408 | req->txcq_qnum = params->txcq_qnum; | |
2409 | req->tx_priority = params->tx_priority; | |
2410 | req->tx_qos = params->tx_qos; | |
2411 | req->tx_orderid = params->tx_orderid; | |
2412 | req->fdepth = params->fdepth; | |
2413 | req->tx_sched_priority = params->tx_sched_priority; | |
2414 | req->tx_burst_size = params->tx_burst_size; | |
2415 | ||
2416 | ret = ti_sci_do_xfer(info, xfer); | |
2417 | if (ret) { | |
4c960505 | 2418 | dev_err(dev, "Mbox send TX_CH_CFG fail %d\n", ret); |
68608b5e PU |
2419 | goto fail; |
2420 | } | |
2421 | ||
2422 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; | |
2423 | ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL; | |
2424 | ||
2425 | fail: | |
2426 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
4c960505 | 2427 | dev_dbg(dev, "TX_CH_CFG: chn %u ret:%u\n", params->index, ret); |
68608b5e PU |
2428 | return ret; |
2429 | } | |
2430 | ||
2431 | /** | |
2432 | * ti_sci_cmd_rm_udmap_rx_ch_cfg() - Configure a UDMAP RX channel | |
2433 | * @handle: Pointer to TI SCI handle. | |
2434 | * @params: Pointer to ti_sci_msg_rm_udmap_rx_ch_cfg RX channel config | |
2435 | * structure | |
2436 | * | |
2437 | * Return: 0 if all went well, else returns appropriate error value. | |
2438 | * | |
2439 | * See @ti_sci_msg_rm_udmap_rx_ch_cfg and @ti_sci_msg_rm_udmap_rx_ch_cfg_req for | |
2440 | * more info. | |
2441 | */ | |
2442 | static int ti_sci_cmd_rm_udmap_rx_ch_cfg(const struct ti_sci_handle *handle, | |
2443 | const struct ti_sci_msg_rm_udmap_rx_ch_cfg *params) | |
2444 | { | |
2445 | struct ti_sci_msg_rm_udmap_rx_ch_cfg_req *req; | |
2446 | struct ti_sci_msg_hdr *resp; | |
2447 | struct ti_sci_xfer *xfer; | |
2448 | struct ti_sci_info *info; | |
2449 | struct device *dev; | |
2450 | int ret = 0; | |
2451 | ||
2452 | if (IS_ERR_OR_NULL(handle)) | |
2453 | return -EINVAL; | |
2454 | ||
2455 | info = handle_to_ti_sci_info(handle); | |
2456 | dev = info->dev; | |
2457 | ||
2458 | xfer = ti_sci_get_one_xfer(info, TISCI_MSG_RM_UDMAP_RX_CH_CFG, | |
2459 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
2460 | sizeof(*req), sizeof(*resp)); | |
2461 | if (IS_ERR(xfer)) { | |
2462 | ret = PTR_ERR(xfer); | |
4c960505 | 2463 | dev_err(dev, "Message RX_CH_CFG alloc failed(%d)\n", ret); |
68608b5e PU |
2464 | return ret; |
2465 | } | |
2466 | req = (struct ti_sci_msg_rm_udmap_rx_ch_cfg_req *)xfer->xfer_buf; | |
2467 | req->valid_params = params->valid_params; | |
2468 | req->nav_id = params->nav_id; | |
2469 | req->index = params->index; | |
2470 | req->rx_fetch_size = params->rx_fetch_size; | |
2471 | req->rxcq_qnum = params->rxcq_qnum; | |
2472 | req->rx_priority = params->rx_priority; | |
2473 | req->rx_qos = params->rx_qos; | |
2474 | req->rx_orderid = params->rx_orderid; | |
2475 | req->rx_sched_priority = params->rx_sched_priority; | |
2476 | req->flowid_start = params->flowid_start; | |
2477 | req->flowid_cnt = params->flowid_cnt; | |
2478 | req->rx_pause_on_err = params->rx_pause_on_err; | |
2479 | req->rx_atype = params->rx_atype; | |
2480 | req->rx_chan_type = params->rx_chan_type; | |
2481 | req->rx_ignore_short = params->rx_ignore_short; | |
2482 | req->rx_ignore_long = params->rx_ignore_long; | |
2483 | req->rx_burst_size = params->rx_burst_size; | |
2484 | ||
2485 | ret = ti_sci_do_xfer(info, xfer); | |
2486 | if (ret) { | |
4c960505 | 2487 | dev_err(dev, "Mbox send RX_CH_CFG fail %d\n", ret); |
68608b5e PU |
2488 | goto fail; |
2489 | } | |
2490 | ||
2491 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; | |
2492 | ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL; | |
2493 | ||
2494 | fail: | |
2495 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
4c960505 | 2496 | dev_dbg(dev, "RX_CH_CFG: chn %u ret:%d\n", params->index, ret); |
68608b5e PU |
2497 | return ret; |
2498 | } | |
2499 | ||
2500 | /** | |
2501 | * ti_sci_cmd_rm_udmap_rx_flow_cfg() - Configure UDMAP RX FLOW | |
2502 | * @handle: Pointer to TI SCI handle. | |
2503 | * @params: Pointer to ti_sci_msg_rm_udmap_flow_cfg RX FLOW config | |
2504 | * structure | |
2505 | * | |
2506 | * Return: 0 if all went well, else returns appropriate error value. | |
2507 | * | |
2508 | * See @ti_sci_msg_rm_udmap_flow_cfg and @ti_sci_msg_rm_udmap_flow_cfg_req for | |
2509 | * more info. | |
2510 | */ | |
2511 | static int ti_sci_cmd_rm_udmap_rx_flow_cfg(const struct ti_sci_handle *handle, | |
2512 | const struct ti_sci_msg_rm_udmap_flow_cfg *params) | |
2513 | { | |
2514 | struct ti_sci_msg_rm_udmap_flow_cfg_req *req; | |
2515 | struct ti_sci_msg_hdr *resp; | |
2516 | struct ti_sci_xfer *xfer; | |
2517 | struct ti_sci_info *info; | |
2518 | struct device *dev; | |
2519 | int ret = 0; | |
2520 | ||
2521 | if (IS_ERR_OR_NULL(handle)) | |
2522 | return -EINVAL; | |
2523 | ||
2524 | info = handle_to_ti_sci_info(handle); | |
2525 | dev = info->dev; | |
2526 | ||
2527 | xfer = ti_sci_get_one_xfer(info, TISCI_MSG_RM_UDMAP_FLOW_CFG, | |
2528 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
2529 | sizeof(*req), sizeof(*resp)); | |
2530 | if (IS_ERR(xfer)) { | |
2531 | ret = PTR_ERR(xfer); | |
2532 | dev_err(dev, "RX_FL_CFG: Message alloc failed(%d)\n", ret); | |
2533 | return ret; | |
2534 | } | |
2535 | req = (struct ti_sci_msg_rm_udmap_flow_cfg_req *)xfer->xfer_buf; | |
2536 | req->valid_params = params->valid_params; | |
2537 | req->nav_id = params->nav_id; | |
2538 | req->flow_index = params->flow_index; | |
2539 | req->rx_einfo_present = params->rx_einfo_present; | |
2540 | req->rx_psinfo_present = params->rx_psinfo_present; | |
2541 | req->rx_error_handling = params->rx_error_handling; | |
2542 | req->rx_desc_type = params->rx_desc_type; | |
2543 | req->rx_sop_offset = params->rx_sop_offset; | |
2544 | req->rx_dest_qnum = params->rx_dest_qnum; | |
2545 | req->rx_src_tag_hi = params->rx_src_tag_hi; | |
2546 | req->rx_src_tag_lo = params->rx_src_tag_lo; | |
2547 | req->rx_dest_tag_hi = params->rx_dest_tag_hi; | |
2548 | req->rx_dest_tag_lo = params->rx_dest_tag_lo; | |
2549 | req->rx_src_tag_hi_sel = params->rx_src_tag_hi_sel; | |
2550 | req->rx_src_tag_lo_sel = params->rx_src_tag_lo_sel; | |
2551 | req->rx_dest_tag_hi_sel = params->rx_dest_tag_hi_sel; | |
2552 | req->rx_dest_tag_lo_sel = params->rx_dest_tag_lo_sel; | |
2553 | req->rx_fdq0_sz0_qnum = params->rx_fdq0_sz0_qnum; | |
2554 | req->rx_fdq1_qnum = params->rx_fdq1_qnum; | |
2555 | req->rx_fdq2_qnum = params->rx_fdq2_qnum; | |
2556 | req->rx_fdq3_qnum = params->rx_fdq3_qnum; | |
2557 | req->rx_ps_location = params->rx_ps_location; | |
2558 | ||
2559 | ret = ti_sci_do_xfer(info, xfer); | |
2560 | if (ret) { | |
2561 | dev_err(dev, "RX_FL_CFG: Mbox send fail %d\n", ret); | |
2562 | goto fail; | |
2563 | } | |
2564 | ||
2565 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; | |
2566 | ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL; | |
2567 | ||
2568 | fail: | |
2569 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
2570 | dev_dbg(info->dev, "RX_FL_CFG: %u ret:%d\n", params->flow_index, ret); | |
2571 | return ret; | |
2572 | } | |
2573 | ||
1e407f33 SA |
2574 | /** |
2575 | * ti_sci_cmd_proc_request() - Command to request a physical processor control | |
2576 | * @handle: Pointer to TI SCI handle | |
2577 | * @proc_id: Processor ID this request is for | |
2578 | * | |
2579 | * Return: 0 if all went well, else returns appropriate error value. | |
2580 | */ | |
2581 | static int ti_sci_cmd_proc_request(const struct ti_sci_handle *handle, | |
2582 | u8 proc_id) | |
2583 | { | |
2584 | struct ti_sci_msg_req_proc_request *req; | |
2585 | struct ti_sci_msg_hdr *resp; | |
2586 | struct ti_sci_info *info; | |
2587 | struct ti_sci_xfer *xfer; | |
2588 | struct device *dev; | |
2589 | int ret = 0; | |
2590 | ||
2591 | if (!handle) | |
2592 | return -EINVAL; | |
2593 | if (IS_ERR(handle)) | |
2594 | return PTR_ERR(handle); | |
2595 | ||
2596 | info = handle_to_ti_sci_info(handle); | |
2597 | dev = info->dev; | |
2598 | ||
2599 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_PROC_REQUEST, | |
2600 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
2601 | sizeof(*req), sizeof(*resp)); | |
2602 | if (IS_ERR(xfer)) { | |
2603 | ret = PTR_ERR(xfer); | |
2604 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
2605 | return ret; | |
2606 | } | |
2607 | req = (struct ti_sci_msg_req_proc_request *)xfer->xfer_buf; | |
2608 | req->processor_id = proc_id; | |
2609 | ||
2610 | ret = ti_sci_do_xfer(info, xfer); | |
2611 | if (ret) { | |
2612 | dev_err(dev, "Mbox send fail %d\n", ret); | |
2613 | goto fail; | |
2614 | } | |
2615 | ||
2616 | resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf; | |
2617 | ||
2618 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; | |
2619 | ||
2620 | fail: | |
2621 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
2622 | ||
2623 | return ret; | |
2624 | } | |
2625 | ||
2626 | /** | |
2627 | * ti_sci_cmd_proc_release() - Command to release a physical processor control | |
2628 | * @handle: Pointer to TI SCI handle | |
2629 | * @proc_id: Processor ID this request is for | |
2630 | * | |
2631 | * Return: 0 if all went well, else returns appropriate error value. | |
2632 | */ | |
2633 | static int ti_sci_cmd_proc_release(const struct ti_sci_handle *handle, | |
2634 | u8 proc_id) | |
2635 | { | |
2636 | struct ti_sci_msg_req_proc_release *req; | |
2637 | struct ti_sci_msg_hdr *resp; | |
2638 | struct ti_sci_info *info; | |
2639 | struct ti_sci_xfer *xfer; | |
2640 | struct device *dev; | |
2641 | int ret = 0; | |
2642 | ||
2643 | if (!handle) | |
2644 | return -EINVAL; | |
2645 | if (IS_ERR(handle)) | |
2646 | return PTR_ERR(handle); | |
2647 | ||
2648 | info = handle_to_ti_sci_info(handle); | |
2649 | dev = info->dev; | |
2650 | ||
2651 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_PROC_RELEASE, | |
2652 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
2653 | sizeof(*req), sizeof(*resp)); | |
2654 | if (IS_ERR(xfer)) { | |
2655 | ret = PTR_ERR(xfer); | |
2656 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
2657 | return ret; | |
2658 | } | |
2659 | req = (struct ti_sci_msg_req_proc_release *)xfer->xfer_buf; | |
2660 | req->processor_id = proc_id; | |
2661 | ||
2662 | ret = ti_sci_do_xfer(info, xfer); | |
2663 | if (ret) { | |
2664 | dev_err(dev, "Mbox send fail %d\n", ret); | |
2665 | goto fail; | |
2666 | } | |
2667 | ||
2668 | resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf; | |
2669 | ||
2670 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; | |
2671 | ||
2672 | fail: | |
2673 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
2674 | ||
2675 | return ret; | |
2676 | } | |
2677 | ||
2678 | /** | |
2679 | * ti_sci_cmd_proc_handover() - Command to handover a physical processor | |
2680 | * control to a host in the processor's access | |
2681 | * control list. | |
2682 | * @handle: Pointer to TI SCI handle | |
2683 | * @proc_id: Processor ID this request is for | |
2684 | * @host_id: Host ID to get the control of the processor | |
2685 | * | |
2686 | * Return: 0 if all went well, else returns appropriate error value. | |
2687 | */ | |
2688 | static int ti_sci_cmd_proc_handover(const struct ti_sci_handle *handle, | |
2689 | u8 proc_id, u8 host_id) | |
2690 | { | |
2691 | struct ti_sci_msg_req_proc_handover *req; | |
2692 | struct ti_sci_msg_hdr *resp; | |
2693 | struct ti_sci_info *info; | |
2694 | struct ti_sci_xfer *xfer; | |
2695 | struct device *dev; | |
2696 | int ret = 0; | |
2697 | ||
2698 | if (!handle) | |
2699 | return -EINVAL; | |
2700 | if (IS_ERR(handle)) | |
2701 | return PTR_ERR(handle); | |
2702 | ||
2703 | info = handle_to_ti_sci_info(handle); | |
2704 | dev = info->dev; | |
2705 | ||
2706 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_PROC_HANDOVER, | |
2707 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
2708 | sizeof(*req), sizeof(*resp)); | |
2709 | if (IS_ERR(xfer)) { | |
2710 | ret = PTR_ERR(xfer); | |
2711 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
2712 | return ret; | |
2713 | } | |
2714 | req = (struct ti_sci_msg_req_proc_handover *)xfer->xfer_buf; | |
2715 | req->processor_id = proc_id; | |
2716 | req->host_id = host_id; | |
2717 | ||
2718 | ret = ti_sci_do_xfer(info, xfer); | |
2719 | if (ret) { | |
2720 | dev_err(dev, "Mbox send fail %d\n", ret); | |
2721 | goto fail; | |
2722 | } | |
2723 | ||
2724 | resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf; | |
2725 | ||
2726 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; | |
2727 | ||
2728 | fail: | |
2729 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
2730 | ||
2731 | return ret; | |
2732 | } | |
2733 | ||
2734 | /** | |
2735 | * ti_sci_cmd_proc_set_config() - Command to set the processor boot | |
2736 | * configuration flags | |
2737 | * @handle: Pointer to TI SCI handle | |
2738 | * @proc_id: Processor ID this request is for | |
2739 | * @config_flags_set: Configuration flags to be set | |
2740 | * @config_flags_clear: Configuration flags to be cleared. | |
2741 | * | |
2742 | * Return: 0 if all went well, else returns appropriate error value. | |
2743 | */ | |
2744 | static int ti_sci_cmd_proc_set_config(const struct ti_sci_handle *handle, | |
2745 | u8 proc_id, u64 bootvector, | |
2746 | u32 config_flags_set, | |
2747 | u32 config_flags_clear) | |
2748 | { | |
2749 | struct ti_sci_msg_req_set_config *req; | |
2750 | struct ti_sci_msg_hdr *resp; | |
2751 | struct ti_sci_info *info; | |
2752 | struct ti_sci_xfer *xfer; | |
2753 | struct device *dev; | |
2754 | int ret = 0; | |
2755 | ||
2756 | if (!handle) | |
2757 | return -EINVAL; | |
2758 | if (IS_ERR(handle)) | |
2759 | return PTR_ERR(handle); | |
2760 | ||
2761 | info = handle_to_ti_sci_info(handle); | |
2762 | dev = info->dev; | |
2763 | ||
2764 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CONFIG, | |
2765 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
2766 | sizeof(*req), sizeof(*resp)); | |
2767 | if (IS_ERR(xfer)) { | |
2768 | ret = PTR_ERR(xfer); | |
2769 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
2770 | return ret; | |
2771 | } | |
2772 | req = (struct ti_sci_msg_req_set_config *)xfer->xfer_buf; | |
2773 | req->processor_id = proc_id; | |
2774 | req->bootvector_low = bootvector & TI_SCI_ADDR_LOW_MASK; | |
2775 | req->bootvector_high = (bootvector & TI_SCI_ADDR_HIGH_MASK) >> | |
2776 | TI_SCI_ADDR_HIGH_SHIFT; | |
2777 | req->config_flags_set = config_flags_set; | |
2778 | req->config_flags_clear = config_flags_clear; | |
2779 | ||
2780 | ret = ti_sci_do_xfer(info, xfer); | |
2781 | if (ret) { | |
2782 | dev_err(dev, "Mbox send fail %d\n", ret); | |
2783 | goto fail; | |
2784 | } | |
2785 | ||
2786 | resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf; | |
2787 | ||
2788 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; | |
2789 | ||
2790 | fail: | |
2791 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
2792 | ||
2793 | return ret; | |
2794 | } | |
2795 | ||
2796 | /** | |
2797 | * ti_sci_cmd_proc_set_control() - Command to set the processor boot | |
2798 | * control flags | |
2799 | * @handle: Pointer to TI SCI handle | |
2800 | * @proc_id: Processor ID this request is for | |
2801 | * @control_flags_set: Control flags to be set | |
2802 | * @control_flags_clear: Control flags to be cleared | |
2803 | * | |
2804 | * Return: 0 if all went well, else returns appropriate error value. | |
2805 | */ | |
2806 | static int ti_sci_cmd_proc_set_control(const struct ti_sci_handle *handle, | |
2807 | u8 proc_id, u32 control_flags_set, | |
2808 | u32 control_flags_clear) | |
2809 | { | |
2810 | struct ti_sci_msg_req_set_ctrl *req; | |
2811 | struct ti_sci_msg_hdr *resp; | |
2812 | struct ti_sci_info *info; | |
2813 | struct ti_sci_xfer *xfer; | |
2814 | struct device *dev; | |
2815 | int ret = 0; | |
2816 | ||
2817 | if (!handle) | |
2818 | return -EINVAL; | |
2819 | if (IS_ERR(handle)) | |
2820 | return PTR_ERR(handle); | |
2821 | ||
2822 | info = handle_to_ti_sci_info(handle); | |
2823 | dev = info->dev; | |
2824 | ||
2825 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CTRL, | |
2826 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
2827 | sizeof(*req), sizeof(*resp)); | |
2828 | if (IS_ERR(xfer)) { | |
2829 | ret = PTR_ERR(xfer); | |
2830 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
2831 | return ret; | |
2832 | } | |
2833 | req = (struct ti_sci_msg_req_set_ctrl *)xfer->xfer_buf; | |
2834 | req->processor_id = proc_id; | |
2835 | req->control_flags_set = control_flags_set; | |
2836 | req->control_flags_clear = control_flags_clear; | |
2837 | ||
2838 | ret = ti_sci_do_xfer(info, xfer); | |
2839 | if (ret) { | |
2840 | dev_err(dev, "Mbox send fail %d\n", ret); | |
2841 | goto fail; | |
2842 | } | |
2843 | ||
2844 | resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf; | |
2845 | ||
2846 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; | |
2847 | ||
2848 | fail: | |
2849 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
2850 | ||
2851 | return ret; | |
2852 | } | |
2853 | ||
2854 | /** | |
2855 | * ti_sci_cmd_get_boot_status() - Command to get the processor boot status | |
2856 | * @handle: Pointer to TI SCI handle | |
2857 | * @proc_id: Processor ID this request is for | |
2858 | * | |
2859 | * Return: 0 if all went well, else returns appropriate error value. | |
2860 | */ | |
2861 | static int ti_sci_cmd_proc_get_status(const struct ti_sci_handle *handle, | |
2862 | u8 proc_id, u64 *bv, u32 *cfg_flags, | |
2863 | u32 *ctrl_flags, u32 *sts_flags) | |
2864 | { | |
2865 | struct ti_sci_msg_resp_get_status *resp; | |
2866 | struct ti_sci_msg_req_get_status *req; | |
2867 | struct ti_sci_info *info; | |
2868 | struct ti_sci_xfer *xfer; | |
2869 | struct device *dev; | |
2870 | int ret = 0; | |
2871 | ||
2872 | if (!handle) | |
2873 | return -EINVAL; | |
2874 | if (IS_ERR(handle)) | |
2875 | return PTR_ERR(handle); | |
2876 | ||
2877 | info = handle_to_ti_sci_info(handle); | |
2878 | dev = info->dev; | |
2879 | ||
2880 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_STATUS, | |
2881 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, | |
2882 | sizeof(*req), sizeof(*resp)); | |
2883 | if (IS_ERR(xfer)) { | |
2884 | ret = PTR_ERR(xfer); | |
2885 | dev_err(dev, "Message alloc failed(%d)\n", ret); | |
2886 | return ret; | |
2887 | } | |
2888 | req = (struct ti_sci_msg_req_get_status *)xfer->xfer_buf; | |
2889 | req->processor_id = proc_id; | |
2890 | ||
2891 | ret = ti_sci_do_xfer(info, xfer); | |
2892 | if (ret) { | |
2893 | dev_err(dev, "Mbox send fail %d\n", ret); | |
2894 | goto fail; | |
2895 | } | |
2896 | ||
2897 | resp = (struct ti_sci_msg_resp_get_status *)xfer->tx_message.buf; | |
2898 | ||
2899 | if (!ti_sci_is_response_ack(resp)) { | |
2900 | ret = -ENODEV; | |
2901 | } else { | |
2902 | *bv = (resp->bootvector_low & TI_SCI_ADDR_LOW_MASK) | | |
2903 | (((u64)resp->bootvector_high << TI_SCI_ADDR_HIGH_SHIFT) & | |
2904 | TI_SCI_ADDR_HIGH_MASK); | |
2905 | *cfg_flags = resp->config_flags; | |
2906 | *ctrl_flags = resp->control_flags; | |
2907 | *sts_flags = resp->status_flags; | |
2908 | } | |
2909 | ||
2910 | fail: | |
2911 | ti_sci_put_one_xfer(&info->minfo, xfer); | |
2912 | ||
2913 | return ret; | |
2914 | } | |
2915 | ||
9e7d756d NM |
2916 | /* |
2917 | * ti_sci_setup_ops() - Setup the operations structures | |
2918 | * @info: pointer to TISCI pointer | |
2919 | */ | |
2920 | static void ti_sci_setup_ops(struct ti_sci_info *info) | |
2921 | { | |
2922 | struct ti_sci_ops *ops = &info->handle.ops; | |
912cffb4 | 2923 | struct ti_sci_core_ops *core_ops = &ops->core_ops; |
9e7d756d | 2924 | struct ti_sci_dev_ops *dops = &ops->dev_ops; |
9f723220 | 2925 | struct ti_sci_clk_ops *cops = &ops->clk_ops; |
9c19fb68 | 2926 | struct ti_sci_rm_core_ops *rm_core_ops = &ops->rm_core_ops; |
997b001f | 2927 | struct ti_sci_rm_irq_ops *iops = &ops->rm_irq_ops; |
68608b5e PU |
2928 | struct ti_sci_rm_ringacc_ops *rops = &ops->rm_ring_ops; |
2929 | struct ti_sci_rm_psil_ops *psilops = &ops->rm_psil_ops; | |
2930 | struct ti_sci_rm_udmap_ops *udmap_ops = &ops->rm_udmap_ops; | |
1e407f33 | 2931 | struct ti_sci_proc_ops *pops = &ops->proc_ops; |
9e7d756d | 2932 | |
912cffb4 NM |
2933 | core_ops->reboot_device = ti_sci_cmd_core_reboot; |
2934 | ||
9e7d756d | 2935 | dops->get_device = ti_sci_cmd_get_device; |
45b659ee | 2936 | dops->get_device_exclusive = ti_sci_cmd_get_device_exclusive; |
9e7d756d | 2937 | dops->idle_device = ti_sci_cmd_idle_device; |
45b659ee | 2938 | dops->idle_device_exclusive = ti_sci_cmd_idle_device_exclusive; |
9e7d756d NM |
2939 | dops->put_device = ti_sci_cmd_put_device; |
2940 | ||
2941 | dops->is_valid = ti_sci_cmd_dev_is_valid; | |
2942 | dops->get_context_loss_count = ti_sci_cmd_dev_get_clcnt; | |
2943 | dops->is_idle = ti_sci_cmd_dev_is_idle; | |
2944 | dops->is_stop = ti_sci_cmd_dev_is_stop; | |
2945 | dops->is_on = ti_sci_cmd_dev_is_on; | |
2946 | dops->is_transitioning = ti_sci_cmd_dev_is_trans; | |
2947 | dops->set_device_resets = ti_sci_cmd_set_device_resets; | |
2948 | dops->get_device_resets = ti_sci_cmd_get_device_resets; | |
9f723220 NM |
2949 | |
2950 | cops->get_clock = ti_sci_cmd_get_clock; | |
2951 | cops->idle_clock = ti_sci_cmd_idle_clock; | |
2952 | cops->put_clock = ti_sci_cmd_put_clock; | |
2953 | cops->is_auto = ti_sci_cmd_clk_is_auto; | |
2954 | cops->is_on = ti_sci_cmd_clk_is_on; | |
2955 | cops->is_off = ti_sci_cmd_clk_is_off; | |
2956 | ||
2957 | cops->set_parent = ti_sci_cmd_clk_set_parent; | |
2958 | cops->get_parent = ti_sci_cmd_clk_get_parent; | |
2959 | cops->get_num_parents = ti_sci_cmd_clk_get_num_parents; | |
2960 | ||
2961 | cops->get_best_match_freq = ti_sci_cmd_clk_get_match_freq; | |
2962 | cops->set_freq = ti_sci_cmd_clk_set_freq; | |
2963 | cops->get_freq = ti_sci_cmd_clk_get_freq; | |
9c19fb68 LV |
2964 | |
2965 | rm_core_ops->get_range = ti_sci_cmd_get_resource_range; | |
2966 | rm_core_ops->get_range_from_shost = | |
2967 | ti_sci_cmd_get_resource_range_from_shost; | |
997b001f LV |
2968 | |
2969 | iops->set_irq = ti_sci_cmd_set_irq; | |
2970 | iops->set_event_map = ti_sci_cmd_set_event_map; | |
2971 | iops->free_irq = ti_sci_cmd_free_irq; | |
2972 | iops->free_event_map = ti_sci_cmd_free_event_map; | |
68608b5e PU |
2973 | |
2974 | rops->config = ti_sci_cmd_ring_config; | |
2975 | rops->get_config = ti_sci_cmd_ring_get_config; | |
2976 | ||
2977 | psilops->pair = ti_sci_cmd_rm_psil_pair; | |
2978 | psilops->unpair = ti_sci_cmd_rm_psil_unpair; | |
2979 | ||
2980 | udmap_ops->tx_ch_cfg = ti_sci_cmd_rm_udmap_tx_ch_cfg; | |
2981 | udmap_ops->rx_ch_cfg = ti_sci_cmd_rm_udmap_rx_ch_cfg; | |
2982 | udmap_ops->rx_flow_cfg = ti_sci_cmd_rm_udmap_rx_flow_cfg; | |
1e407f33 SA |
2983 | |
2984 | pops->request = ti_sci_cmd_proc_request; | |
2985 | pops->release = ti_sci_cmd_proc_release; | |
2986 | pops->handover = ti_sci_cmd_proc_handover; | |
2987 | pops->set_config = ti_sci_cmd_proc_set_config; | |
2988 | pops->set_control = ti_sci_cmd_proc_set_control; | |
2989 | pops->get_status = ti_sci_cmd_proc_get_status; | |
9e7d756d NM |
2990 | } |
2991 | ||
aa276781 NM |
2992 | /** |
2993 | * ti_sci_get_handle() - Get the TI SCI handle for a device | |
2994 | * @dev: Pointer to device for which we want SCI handle | |
2995 | * | |
2996 | * NOTE: The function does not track individual clients of the framework | |
2997 | * and is expected to be maintained by caller of TI SCI protocol library. | |
2998 | * ti_sci_put_handle must be balanced with successful ti_sci_get_handle | |
2999 | * Return: pointer to handle if successful, else: | |
3000 | * -EPROBE_DEFER if the instance is not ready | |
3001 | * -ENODEV if the required node handler is missing | |
3002 | * -EINVAL if invalid conditions are encountered. | |
3003 | */ | |
3004 | const struct ti_sci_handle *ti_sci_get_handle(struct device *dev) | |
3005 | { | |
3006 | struct device_node *ti_sci_np; | |
3007 | struct list_head *p; | |
3008 | struct ti_sci_handle *handle = NULL; | |
3009 | struct ti_sci_info *info; | |
3010 | ||
3011 | if (!dev) { | |
3012 | pr_err("I need a device pointer\n"); | |
3013 | return ERR_PTR(-EINVAL); | |
3014 | } | |
3015 | ti_sci_np = of_get_parent(dev->of_node); | |
3016 | if (!ti_sci_np) { | |
3017 | dev_err(dev, "No OF information\n"); | |
3018 | return ERR_PTR(-EINVAL); | |
3019 | } | |
3020 | ||
3021 | mutex_lock(&ti_sci_list_mutex); | |
3022 | list_for_each(p, &ti_sci_list) { | |
3023 | info = list_entry(p, struct ti_sci_info, node); | |
3024 | if (ti_sci_np == info->dev->of_node) { | |
3025 | handle = &info->handle; | |
3026 | info->users++; | |
3027 | break; | |
3028 | } | |
3029 | } | |
3030 | mutex_unlock(&ti_sci_list_mutex); | |
3031 | of_node_put(ti_sci_np); | |
3032 | ||
3033 | if (!handle) | |
3034 | return ERR_PTR(-EPROBE_DEFER); | |
3035 | ||
3036 | return handle; | |
3037 | } | |
3038 | EXPORT_SYMBOL_GPL(ti_sci_get_handle); | |
3039 | ||
3040 | /** | |
3041 | * ti_sci_put_handle() - Release the handle acquired by ti_sci_get_handle | |
3042 | * @handle: Handle acquired by ti_sci_get_handle | |
3043 | * | |
3044 | * NOTE: The function does not track individual clients of the framework | |
3045 | * and is expected to be maintained by caller of TI SCI protocol library. | |
3046 | * ti_sci_put_handle must be balanced with successful ti_sci_get_handle | |
3047 | * | |
3048 | * Return: 0 is successfully released | |
3049 | * if an error pointer was passed, it returns the error value back, | |
3050 | * if null was passed, it returns -EINVAL; | |
3051 | */ | |
3052 | int ti_sci_put_handle(const struct ti_sci_handle *handle) | |
3053 | { | |
3054 | struct ti_sci_info *info; | |
3055 | ||
3056 | if (IS_ERR(handle)) | |
3057 | return PTR_ERR(handle); | |
3058 | if (!handle) | |
3059 | return -EINVAL; | |
3060 | ||
3061 | info = handle_to_ti_sci_info(handle); | |
3062 | mutex_lock(&ti_sci_list_mutex); | |
3063 | if (!WARN_ON(!info->users)) | |
3064 | info->users--; | |
3065 | mutex_unlock(&ti_sci_list_mutex); | |
3066 | ||
3067 | return 0; | |
3068 | } | |
3069 | EXPORT_SYMBOL_GPL(ti_sci_put_handle); | |
3070 | ||
3071 | static void devm_ti_sci_release(struct device *dev, void *res) | |
3072 | { | |
3073 | const struct ti_sci_handle **ptr = res; | |
3074 | const struct ti_sci_handle *handle = *ptr; | |
3075 | int ret; | |
3076 | ||
3077 | ret = ti_sci_put_handle(handle); | |
3078 | if (ret) | |
3079 | dev_err(dev, "failed to put handle %d\n", ret); | |
3080 | } | |
3081 | ||
3082 | /** | |
3083 | * devm_ti_sci_get_handle() - Managed get handle | |
3084 | * @dev: device for which we want SCI handle for. | |
3085 | * | |
3086 | * NOTE: This releases the handle once the device resources are | |
3087 | * no longer needed. MUST NOT BE released with ti_sci_put_handle. | |
3088 | * The function does not track individual clients of the framework | |
3089 | * and is expected to be maintained by caller of TI SCI protocol library. | |
3090 | * | |
3091 | * Return: 0 if all went fine, else corresponding error. | |
3092 | */ | |
3093 | const struct ti_sci_handle *devm_ti_sci_get_handle(struct device *dev) | |
3094 | { | |
3095 | const struct ti_sci_handle **ptr; | |
3096 | const struct ti_sci_handle *handle; | |
3097 | ||
3098 | ptr = devres_alloc(devm_ti_sci_release, sizeof(*ptr), GFP_KERNEL); | |
3099 | if (!ptr) | |
3100 | return ERR_PTR(-ENOMEM); | |
3101 | handle = ti_sci_get_handle(dev); | |
3102 | ||
3103 | if (!IS_ERR(handle)) { | |
3104 | *ptr = handle; | |
3105 | devres_add(dev, ptr); | |
3106 | } else { | |
3107 | devres_free(ptr); | |
3108 | } | |
3109 | ||
3110 | return handle; | |
3111 | } | |
3112 | EXPORT_SYMBOL_GPL(devm_ti_sci_get_handle); | |
3113 | ||
905c3047 GS |
3114 | /** |
3115 | * ti_sci_get_by_phandle() - Get the TI SCI handle using DT phandle | |
3116 | * @np: device node | |
3117 | * @property: property name containing phandle on TISCI node | |
3118 | * | |
3119 | * NOTE: The function does not track individual clients of the framework | |
3120 | * and is expected to be maintained by caller of TI SCI protocol library. | |
3121 | * ti_sci_put_handle must be balanced with successful ti_sci_get_by_phandle | |
3122 | * Return: pointer to handle if successful, else: | |
3123 | * -EPROBE_DEFER if the instance is not ready | |
3124 | * -ENODEV if the required node handler is missing | |
3125 | * -EINVAL if invalid conditions are encountered. | |
3126 | */ | |
3127 | const struct ti_sci_handle *ti_sci_get_by_phandle(struct device_node *np, | |
3128 | const char *property) | |
3129 | { | |
3130 | struct ti_sci_handle *handle = NULL; | |
3131 | struct device_node *ti_sci_np; | |
3132 | struct ti_sci_info *info; | |
3133 | struct list_head *p; | |
3134 | ||
3135 | if (!np) { | |
3136 | pr_err("I need a device pointer\n"); | |
3137 | return ERR_PTR(-EINVAL); | |
3138 | } | |
3139 | ||
3140 | ti_sci_np = of_parse_phandle(np, property, 0); | |
3141 | if (!ti_sci_np) | |
3142 | return ERR_PTR(-ENODEV); | |
3143 | ||
3144 | mutex_lock(&ti_sci_list_mutex); | |
3145 | list_for_each(p, &ti_sci_list) { | |
3146 | info = list_entry(p, struct ti_sci_info, node); | |
3147 | if (ti_sci_np == info->dev->of_node) { | |
3148 | handle = &info->handle; | |
3149 | info->users++; | |
3150 | break; | |
3151 | } | |
3152 | } | |
3153 | mutex_unlock(&ti_sci_list_mutex); | |
3154 | of_node_put(ti_sci_np); | |
3155 | ||
3156 | if (!handle) | |
3157 | return ERR_PTR(-EPROBE_DEFER); | |
3158 | ||
3159 | return handle; | |
3160 | } | |
3161 | EXPORT_SYMBOL_GPL(ti_sci_get_by_phandle); | |
3162 | ||
3163 | /** | |
3164 | * devm_ti_sci_get_by_phandle() - Managed get handle using phandle | |
3165 | * @dev: Device pointer requesting TISCI handle | |
3166 | * @property: property name containing phandle on TISCI node | |
3167 | * | |
3168 | * NOTE: This releases the handle once the device resources are | |
3169 | * no longer needed. MUST NOT BE released with ti_sci_put_handle. | |
3170 | * The function does not track individual clients of the framework | |
3171 | * and is expected to be maintained by caller of TI SCI protocol library. | |
3172 | * | |
3173 | * Return: 0 if all went fine, else corresponding error. | |
3174 | */ | |
3175 | const struct ti_sci_handle *devm_ti_sci_get_by_phandle(struct device *dev, | |
3176 | const char *property) | |
3177 | { | |
3178 | const struct ti_sci_handle *handle; | |
3179 | const struct ti_sci_handle **ptr; | |
3180 | ||
3181 | ptr = devres_alloc(devm_ti_sci_release, sizeof(*ptr), GFP_KERNEL); | |
3182 | if (!ptr) | |
3183 | return ERR_PTR(-ENOMEM); | |
3184 | handle = ti_sci_get_by_phandle(dev_of_node(dev), property); | |
3185 | ||
3186 | if (!IS_ERR(handle)) { | |
3187 | *ptr = handle; | |
3188 | devres_add(dev, ptr); | |
3189 | } else { | |
3190 | devres_free(ptr); | |
3191 | } | |
3192 | ||
3193 | return handle; | |
3194 | } | |
3195 | EXPORT_SYMBOL_GPL(devm_ti_sci_get_by_phandle); | |
3196 | ||
032a1ec5 LV |
3197 | /** |
3198 | * ti_sci_get_free_resource() - Get a free resource from TISCI resource. | |
3199 | * @res: Pointer to the TISCI resource | |
3200 | * | |
3201 | * Return: resource num if all went ok else TI_SCI_RESOURCE_NULL. | |
3202 | */ | |
3203 | u16 ti_sci_get_free_resource(struct ti_sci_resource *res) | |
3204 | { | |
3205 | unsigned long flags; | |
3206 | u16 set, free_bit; | |
3207 | ||
3208 | raw_spin_lock_irqsave(&res->lock, flags); | |
3209 | for (set = 0; set < res->sets; set++) { | |
3210 | free_bit = find_first_zero_bit(res->desc[set].res_map, | |
3211 | res->desc[set].num); | |
3212 | if (free_bit != res->desc[set].num) { | |
3213 | set_bit(free_bit, res->desc[set].res_map); | |
3214 | raw_spin_unlock_irqrestore(&res->lock, flags); | |
3215 | return res->desc[set].start + free_bit; | |
3216 | } | |
3217 | } | |
3218 | raw_spin_unlock_irqrestore(&res->lock, flags); | |
3219 | ||
3220 | return TI_SCI_RESOURCE_NULL; | |
3221 | } | |
3222 | EXPORT_SYMBOL_GPL(ti_sci_get_free_resource); | |
3223 | ||
3224 | /** | |
3225 | * ti_sci_release_resource() - Release a resource from TISCI resource. | |
3226 | * @res: Pointer to the TISCI resource | |
3227 | * @id: Resource id to be released. | |
3228 | */ | |
3229 | void ti_sci_release_resource(struct ti_sci_resource *res, u16 id) | |
3230 | { | |
3231 | unsigned long flags; | |
3232 | u16 set; | |
3233 | ||
3234 | raw_spin_lock_irqsave(&res->lock, flags); | |
3235 | for (set = 0; set < res->sets; set++) { | |
3236 | if (res->desc[set].start <= id && | |
3237 | (res->desc[set].num + res->desc[set].start) > id) | |
3238 | clear_bit(id - res->desc[set].start, | |
3239 | res->desc[set].res_map); | |
3240 | } | |
3241 | raw_spin_unlock_irqrestore(&res->lock, flags); | |
3242 | } | |
3243 | EXPORT_SYMBOL_GPL(ti_sci_release_resource); | |
3244 | ||
3245 | /** | |
3246 | * ti_sci_get_num_resources() - Get the number of resources in TISCI resource | |
3247 | * @res: Pointer to the TISCI resource | |
3248 | * | |
3249 | * Return: Total number of available resources. | |
3250 | */ | |
3251 | u32 ti_sci_get_num_resources(struct ti_sci_resource *res) | |
3252 | { | |
3253 | u32 set, count = 0; | |
3254 | ||
3255 | for (set = 0; set < res->sets; set++) | |
3256 | count += res->desc[set].num; | |
3257 | ||
3258 | return count; | |
3259 | } | |
3260 | EXPORT_SYMBOL_GPL(ti_sci_get_num_resources); | |
3261 | ||
3262 | /** | |
3263 | * devm_ti_sci_get_of_resource() - Get a TISCI resource assigned to a device | |
3264 | * @handle: TISCI handle | |
3265 | * @dev: Device pointer to which the resource is assigned | |
3266 | * @dev_id: TISCI device id to which the resource is assigned | |
3267 | * @of_prop: property name by which the resource are represented | |
3268 | * | |
3269 | * Return: Pointer to ti_sci_resource if all went well else appropriate | |
3270 | * error pointer. | |
3271 | */ | |
3272 | struct ti_sci_resource * | |
3273 | devm_ti_sci_get_of_resource(const struct ti_sci_handle *handle, | |
3274 | struct device *dev, u32 dev_id, char *of_prop) | |
3275 | { | |
3276 | struct ti_sci_resource *res; | |
fa42da11 | 3277 | bool valid_set = false; |
032a1ec5 LV |
3278 | u32 resource_subtype; |
3279 | int i, ret; | |
3280 | ||
3281 | res = devm_kzalloc(dev, sizeof(*res), GFP_KERNEL); | |
3282 | if (!res) | |
3283 | return ERR_PTR(-ENOMEM); | |
3284 | ||
0b88bc92 SB |
3285 | ret = of_property_count_elems_of_size(dev_of_node(dev), of_prop, |
3286 | sizeof(u32)); | |
3287 | if (ret < 0) { | |
032a1ec5 | 3288 | dev_err(dev, "%s resource type ids not available\n", of_prop); |
0b88bc92 | 3289 | return ERR_PTR(ret); |
032a1ec5 | 3290 | } |
0b88bc92 | 3291 | res->sets = ret; |
032a1ec5 LV |
3292 | |
3293 | res->desc = devm_kcalloc(dev, res->sets, sizeof(*res->desc), | |
3294 | GFP_KERNEL); | |
3295 | if (!res->desc) | |
3296 | return ERR_PTR(-ENOMEM); | |
3297 | ||
3298 | for (i = 0; i < res->sets; i++) { | |
3299 | ret = of_property_read_u32_index(dev_of_node(dev), of_prop, i, | |
3300 | &resource_subtype); | |
3301 | if (ret) | |
3302 | return ERR_PTR(-EINVAL); | |
3303 | ||
3304 | ret = handle->ops.rm_core_ops.get_range(handle, dev_id, | |
3305 | resource_subtype, | |
3306 | &res->desc[i].start, | |
3307 | &res->desc[i].num); | |
3308 | if (ret) { | |
fa42da11 | 3309 | dev_dbg(dev, "dev = %d subtype %d not allocated for this host\n", |
032a1ec5 | 3310 | dev_id, resource_subtype); |
fa42da11 PU |
3311 | res->desc[i].start = 0; |
3312 | res->desc[i].num = 0; | |
3313 | continue; | |
032a1ec5 LV |
3314 | } |
3315 | ||
3316 | dev_dbg(dev, "dev = %d, subtype = %d, start = %d, num = %d\n", | |
3317 | dev_id, resource_subtype, res->desc[i].start, | |
3318 | res->desc[i].num); | |
3319 | ||
fa42da11 | 3320 | valid_set = true; |
032a1ec5 LV |
3321 | res->desc[i].res_map = |
3322 | devm_kzalloc(dev, BITS_TO_LONGS(res->desc[i].num) * | |
3323 | sizeof(*res->desc[i].res_map), GFP_KERNEL); | |
3324 | if (!res->desc[i].res_map) | |
3325 | return ERR_PTR(-ENOMEM); | |
3326 | } | |
3327 | raw_spin_lock_init(&res->lock); | |
3328 | ||
fa42da11 PU |
3329 | if (valid_set) |
3330 | return res; | |
3331 | ||
3332 | return ERR_PTR(-EINVAL); | |
032a1ec5 LV |
3333 | } |
3334 | ||
912cffb4 NM |
3335 | static int tisci_reboot_handler(struct notifier_block *nb, unsigned long mode, |
3336 | void *cmd) | |
3337 | { | |
3338 | struct ti_sci_info *info = reboot_to_ti_sci_info(nb); | |
3339 | const struct ti_sci_handle *handle = &info->handle; | |
3340 | ||
3341 | ti_sci_cmd_core_reboot(handle); | |
3342 | ||
3343 | /* call fail OR pass, we should not be here in the first place */ | |
3344 | return NOTIFY_BAD; | |
3345 | } | |
3346 | ||
aa276781 NM |
3347 | /* Description for K2G */ |
3348 | static const struct ti_sci_desc ti_sci_pmmc_k2g_desc = { | |
e69a3553 | 3349 | .default_host_id = 2, |
aa276781 NM |
3350 | /* Conservative duration */ |
3351 | .max_rx_timeout_ms = 1000, | |
3352 | /* Limited by MBOX_TX_QUEUE_LEN. K2G can handle upto 128 messages! */ | |
3353 | .max_msgs = 20, | |
3354 | .max_msg_size = 64, | |
754c9477 PU |
3355 | .rm_type_map = NULL, |
3356 | }; | |
3357 | ||
3358 | static struct ti_sci_rm_type_map ti_sci_am654_rm_type_map[] = { | |
3359 | {.dev_id = 56, .type = 0x00b}, /* GIC_IRQ */ | |
3360 | {.dev_id = 179, .type = 0x000}, /* MAIN_NAV_UDMASS_IA0 */ | |
3361 | {.dev_id = 187, .type = 0x009}, /* MAIN_NAV_RA */ | |
3362 | {.dev_id = 188, .type = 0x006}, /* MAIN_NAV_UDMAP */ | |
3363 | {.dev_id = 194, .type = 0x007}, /* MCU_NAV_UDMAP */ | |
3364 | {.dev_id = 195, .type = 0x00a}, /* MCU_NAV_RA */ | |
3365 | {.dev_id = 0, .type = 0x000}, /* end of table */ | |
3366 | }; | |
3367 | ||
3368 | /* Description for AM654 */ | |
3369 | static const struct ti_sci_desc ti_sci_pmmc_am654_desc = { | |
3370 | .default_host_id = 12, | |
3371 | /* Conservative duration */ | |
3372 | .max_rx_timeout_ms = 10000, | |
3373 | /* Limited by MBOX_TX_QUEUE_LEN. K2G can handle upto 128 messages! */ | |
3374 | .max_msgs = 20, | |
3375 | .max_msg_size = 60, | |
3376 | .rm_type_map = ti_sci_am654_rm_type_map, | |
aa276781 NM |
3377 | }; |
3378 | ||
3379 | static const struct of_device_id ti_sci_of_match[] = { | |
3380 | {.compatible = "ti,k2g-sci", .data = &ti_sci_pmmc_k2g_desc}, | |
754c9477 | 3381 | {.compatible = "ti,am654-sci", .data = &ti_sci_pmmc_am654_desc}, |
aa276781 NM |
3382 | { /* Sentinel */ }, |
3383 | }; | |
3384 | MODULE_DEVICE_TABLE(of, ti_sci_of_match); | |
3385 | ||
3386 | static int ti_sci_probe(struct platform_device *pdev) | |
3387 | { | |
3388 | struct device *dev = &pdev->dev; | |
3389 | const struct of_device_id *of_id; | |
3390 | const struct ti_sci_desc *desc; | |
3391 | struct ti_sci_xfer *xfer; | |
3392 | struct ti_sci_info *info = NULL; | |
3393 | struct ti_sci_xfers_info *minfo; | |
3394 | struct mbox_client *cl; | |
3395 | int ret = -EINVAL; | |
3396 | int i; | |
912cffb4 | 3397 | int reboot = 0; |
e69a3553 | 3398 | u32 h_id; |
aa276781 NM |
3399 | |
3400 | of_id = of_match_device(ti_sci_of_match, dev); | |
3401 | if (!of_id) { | |
3402 | dev_err(dev, "OF data missing\n"); | |
3403 | return -EINVAL; | |
3404 | } | |
3405 | desc = of_id->data; | |
3406 | ||
3407 | info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); | |
3408 | if (!info) | |
3409 | return -ENOMEM; | |
3410 | ||
3411 | info->dev = dev; | |
3412 | info->desc = desc; | |
e69a3553 NM |
3413 | ret = of_property_read_u32(dev->of_node, "ti,host-id", &h_id); |
3414 | /* if the property is not present in DT, use a default from desc */ | |
3415 | if (ret < 0) { | |
3416 | info->host_id = info->desc->default_host_id; | |
3417 | } else { | |
3418 | if (!h_id) { | |
3419 | dev_warn(dev, "Host ID 0 is reserved for firmware\n"); | |
3420 | info->host_id = info->desc->default_host_id; | |
3421 | } else { | |
3422 | info->host_id = h_id; | |
3423 | } | |
3424 | } | |
3425 | ||
912cffb4 NM |
3426 | reboot = of_property_read_bool(dev->of_node, |
3427 | "ti,system-reboot-controller"); | |
aa276781 NM |
3428 | INIT_LIST_HEAD(&info->node); |
3429 | minfo = &info->minfo; | |
3430 | ||
3431 | /* | |
3432 | * Pre-allocate messages | |
3433 | * NEVER allocate more than what we can indicate in hdr.seq | |
3434 | * if we have data description bug, force a fix.. | |
3435 | */ | |
3436 | if (WARN_ON(desc->max_msgs >= | |
3437 | 1 << 8 * sizeof(((struct ti_sci_msg_hdr *)0)->seq))) | |
3438 | return -EINVAL; | |
3439 | ||
3440 | minfo->xfer_block = devm_kcalloc(dev, | |
3441 | desc->max_msgs, | |
3442 | sizeof(*minfo->xfer_block), | |
3443 | GFP_KERNEL); | |
3444 | if (!minfo->xfer_block) | |
3445 | return -ENOMEM; | |
3446 | ||
a86854d0 KC |
3447 | minfo->xfer_alloc_table = devm_kcalloc(dev, |
3448 | BITS_TO_LONGS(desc->max_msgs), | |
3449 | sizeof(unsigned long), | |
aa276781 NM |
3450 | GFP_KERNEL); |
3451 | if (!minfo->xfer_alloc_table) | |
3452 | return -ENOMEM; | |
3453 | bitmap_zero(minfo->xfer_alloc_table, desc->max_msgs); | |
3454 | ||
3455 | /* Pre-initialize the buffer pointer to pre-allocated buffers */ | |
3456 | for (i = 0, xfer = minfo->xfer_block; i < desc->max_msgs; i++, xfer++) { | |
3457 | xfer->xfer_buf = devm_kcalloc(dev, 1, desc->max_msg_size, | |
3458 | GFP_KERNEL); | |
3459 | if (!xfer->xfer_buf) | |
3460 | return -ENOMEM; | |
3461 | ||
3462 | xfer->tx_message.buf = xfer->xfer_buf; | |
3463 | init_completion(&xfer->done); | |
3464 | } | |
3465 | ||
3466 | ret = ti_sci_debugfs_create(pdev, info); | |
3467 | if (ret) | |
3468 | dev_warn(dev, "Failed to create debug file\n"); | |
3469 | ||
3470 | platform_set_drvdata(pdev, info); | |
3471 | ||
3472 | cl = &info->cl; | |
3473 | cl->dev = dev; | |
3474 | cl->tx_block = false; | |
3475 | cl->rx_callback = ti_sci_rx_callback; | |
3476 | cl->knows_txdone = true; | |
3477 | ||
3478 | spin_lock_init(&minfo->xfer_lock); | |
3479 | sema_init(&minfo->sem_xfer_count, desc->max_msgs); | |
3480 | ||
3481 | info->chan_rx = mbox_request_channel_byname(cl, "rx"); | |
3482 | if (IS_ERR(info->chan_rx)) { | |
3483 | ret = PTR_ERR(info->chan_rx); | |
3484 | goto out; | |
3485 | } | |
3486 | ||
3487 | info->chan_tx = mbox_request_channel_byname(cl, "tx"); | |
3488 | if (IS_ERR(info->chan_tx)) { | |
3489 | ret = PTR_ERR(info->chan_tx); | |
3490 | goto out; | |
3491 | } | |
3492 | ret = ti_sci_cmd_get_revision(info); | |
3493 | if (ret) { | |
3494 | dev_err(dev, "Unable to communicate with TISCI(%d)\n", ret); | |
3495 | goto out; | |
3496 | } | |
3497 | ||
9e7d756d NM |
3498 | ti_sci_setup_ops(info); |
3499 | ||
912cffb4 NM |
3500 | if (reboot) { |
3501 | info->nb.notifier_call = tisci_reboot_handler; | |
3502 | info->nb.priority = 128; | |
3503 | ||
3504 | ret = register_restart_handler(&info->nb); | |
3505 | if (ret) { | |
3506 | dev_err(dev, "reboot registration fail(%d)\n", ret); | |
3507 | return ret; | |
3508 | } | |
3509 | } | |
3510 | ||
aa276781 NM |
3511 | dev_info(dev, "ABI: %d.%d (firmware rev 0x%04x '%s')\n", |
3512 | info->handle.version.abi_major, info->handle.version.abi_minor, | |
3513 | info->handle.version.firmware_revision, | |
3514 | info->handle.version.firmware_description); | |
3515 | ||
3516 | mutex_lock(&ti_sci_list_mutex); | |
3517 | list_add_tail(&info->node, &ti_sci_list); | |
3518 | mutex_unlock(&ti_sci_list_mutex); | |
3519 | ||
3520 | return of_platform_populate(dev->of_node, NULL, NULL, dev); | |
3521 | out: | |
3522 | if (!IS_ERR(info->chan_tx)) | |
3523 | mbox_free_channel(info->chan_tx); | |
3524 | if (!IS_ERR(info->chan_rx)) | |
3525 | mbox_free_channel(info->chan_rx); | |
3526 | debugfs_remove(info->d); | |
3527 | return ret; | |
3528 | } | |
3529 | ||
3530 | static int ti_sci_remove(struct platform_device *pdev) | |
3531 | { | |
3532 | struct ti_sci_info *info; | |
3533 | struct device *dev = &pdev->dev; | |
3534 | int ret = 0; | |
3535 | ||
3536 | of_platform_depopulate(dev); | |
3537 | ||
3538 | info = platform_get_drvdata(pdev); | |
3539 | ||
912cffb4 NM |
3540 | if (info->nb.notifier_call) |
3541 | unregister_restart_handler(&info->nb); | |
3542 | ||
aa276781 NM |
3543 | mutex_lock(&ti_sci_list_mutex); |
3544 | if (info->users) | |
3545 | ret = -EBUSY; | |
3546 | else | |
3547 | list_del(&info->node); | |
3548 | mutex_unlock(&ti_sci_list_mutex); | |
3549 | ||
3550 | if (!ret) { | |
3551 | ti_sci_debugfs_destroy(pdev, info); | |
3552 | ||
3553 | /* Safe to free channels since no more users */ | |
3554 | mbox_free_channel(info->chan_tx); | |
3555 | mbox_free_channel(info->chan_rx); | |
3556 | } | |
3557 | ||
3558 | return ret; | |
3559 | } | |
3560 | ||
3561 | static struct platform_driver ti_sci_driver = { | |
3562 | .probe = ti_sci_probe, | |
3563 | .remove = ti_sci_remove, | |
3564 | .driver = { | |
3565 | .name = "ti-sci", | |
3566 | .of_match_table = of_match_ptr(ti_sci_of_match), | |
3567 | }, | |
3568 | }; | |
3569 | module_platform_driver(ti_sci_driver); | |
3570 | ||
3571 | MODULE_LICENSE("GPL v2"); | |
3572 | MODULE_DESCRIPTION("TI System Control Interface(SCI) driver"); | |
3573 | MODULE_AUTHOR("Nishanth Menon"); | |
3574 | MODULE_ALIAS("platform:ti-sci"); |