Lokesh Vutla | 1e0a601 | 2018-05-04 23:10:23 -0700 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 2 | /* |
| 3 | * Texas Instruments System Control Interface Protocol Driver |
| 4 | * |
Dave Gerlach | b9e8a7d | 2022-04-12 14:21:38 -0500 | [diff] [blame] | 5 | * Copyright (C) 2015-2022 Texas Instruments Incorporated - https://www.ti.com/ |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 6 | * Nishanth Menon |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 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> |
Dave Gerlach | b9e8a7d | 2022-04-12 14:21:38 -0500 | [diff] [blame] | 15 | #include <linux/iopoll.h> |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 16 | #include <linux/kernel.h> |
| 17 | #include <linux/mailbox_client.h> |
| 18 | #include <linux/module.h> |
Rob Herring | 05e5f73 | 2023-10-06 17:46:38 -0500 | [diff] [blame] | 19 | #include <linux/of.h> |
| 20 | #include <linux/of_platform.h> |
| 21 | #include <linux/platform_device.h> |
| 22 | #include <linux/property.h> |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 23 | #include <linux/semaphore.h> |
| 24 | #include <linux/slab.h> |
| 25 | #include <linux/soc/ti/ti-msgmgr.h> |
| 26 | #include <linux/soc/ti/ti_sci_protocol.h> |
Nishanth Menon | 912cffb | 2016-10-18 18:08:37 -0500 | [diff] [blame] | 27 | #include <linux/reboot.h> |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 28 | |
| 29 | #include "ti_sci.h" |
| 30 | |
| 31 | /* List of all TI SCI devices active in system */ |
| 32 | static LIST_HEAD(ti_sci_list); |
| 33 | /* Protection for the entire list */ |
| 34 | static DEFINE_MUTEX(ti_sci_list_mutex); |
| 35 | |
| 36 | /** |
| 37 | * struct ti_sci_xfer - Structure representing a message flow |
| 38 | * @tx_message: Transmit message |
| 39 | * @rx_len: Receive message length |
| 40 | * @xfer_buf: Preallocated buffer to store receive message |
| 41 | * Since we work with request-ACK protocol, we can |
| 42 | * reuse the same buffer for the rx path as we |
| 43 | * use for the tx path. |
| 44 | * @done: completion event |
| 45 | */ |
| 46 | struct ti_sci_xfer { |
| 47 | struct ti_msgmgr_message tx_message; |
| 48 | u8 rx_len; |
| 49 | u8 *xfer_buf; |
| 50 | struct completion done; |
| 51 | }; |
| 52 | |
| 53 | /** |
| 54 | * struct ti_sci_xfers_info - Structure to manage transfer information |
| 55 | * @sem_xfer_count: Counting Semaphore for managing max simultaneous |
| 56 | * Messages. |
| 57 | * @xfer_block: Preallocated Message array |
| 58 | * @xfer_alloc_table: Bitmap table for allocated messages. |
| 59 | * Index of this bitmap table is also used for message |
| 60 | * sequence identifier. |
| 61 | * @xfer_lock: Protection for message allocation |
| 62 | */ |
| 63 | struct ti_sci_xfers_info { |
| 64 | struct semaphore sem_xfer_count; |
| 65 | struct ti_sci_xfer *xfer_block; |
| 66 | unsigned long *xfer_alloc_table; |
| 67 | /* protect transfer allocation */ |
| 68 | spinlock_t xfer_lock; |
| 69 | }; |
| 70 | |
| 71 | /** |
| 72 | * struct ti_sci_desc - Description of SoC integration |
Nishanth Menon | e69a355 | 2018-08-28 13:22:13 -0700 | [diff] [blame] | 73 | * @default_host_id: Host identifier representing the compute entity |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 74 | * @max_rx_timeout_ms: Timeout for communication with SoC (in Milliseconds) |
| 75 | * @max_msgs: Maximum number of messages that can be pending |
| 76 | * simultaneously in the system |
| 77 | * @max_msg_size: Maximum size of data per message that can be handled. |
| 78 | */ |
| 79 | struct ti_sci_desc { |
Nishanth Menon | e69a355 | 2018-08-28 13:22:13 -0700 | [diff] [blame] | 80 | u8 default_host_id; |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 81 | int max_rx_timeout_ms; |
| 82 | int max_msgs; |
| 83 | int max_msg_size; |
| 84 | }; |
| 85 | |
| 86 | /** |
| 87 | * struct ti_sci_info - Structure representing a TI SCI instance |
| 88 | * @dev: Device pointer |
| 89 | * @desc: SoC description for this instance |
| 90 | * @d: Debugfs file entry |
| 91 | * @debug_region: Memory region where the debug message are available |
| 92 | * @debug_region_size: Debug region size |
| 93 | * @debug_buffer: Buffer allocated to copy debug messages. |
| 94 | * @handle: Instance of TI SCI handle to send to clients. |
| 95 | * @cl: Mailbox Client |
| 96 | * @chan_tx: Transmit mailbox channel |
| 97 | * @chan_rx: Receive mailbox channel |
| 98 | * @minfo: Message info |
| 99 | * @node: list head |
Nishanth Menon | e69a355 | 2018-08-28 13:22:13 -0700 | [diff] [blame] | 100 | * @host_id: Host ID |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 101 | * @users: Number of users of this instance |
| 102 | */ |
| 103 | struct ti_sci_info { |
| 104 | struct device *dev; |
| 105 | const struct ti_sci_desc *desc; |
| 106 | struct dentry *d; |
| 107 | void __iomem *debug_region; |
| 108 | char *debug_buffer; |
| 109 | size_t debug_region_size; |
| 110 | struct ti_sci_handle handle; |
| 111 | struct mbox_client cl; |
| 112 | struct mbox_chan *chan_tx; |
| 113 | struct mbox_chan *chan_rx; |
| 114 | struct ti_sci_xfers_info minfo; |
| 115 | struct list_head node; |
Nishanth Menon | e69a355 | 2018-08-28 13:22:13 -0700 | [diff] [blame] | 116 | u8 host_id; |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 117 | /* protected by ti_sci_list_mutex */ |
| 118 | int users; |
| 119 | }; |
| 120 | |
| 121 | #define cl_to_ti_sci_info(c) container_of(c, struct ti_sci_info, cl) |
| 122 | #define handle_to_ti_sci_info(h) container_of(h, struct ti_sci_info, handle) |
| 123 | |
| 124 | #ifdef CONFIG_DEBUG_FS |
| 125 | |
| 126 | /** |
| 127 | * ti_sci_debug_show() - Helper to dump the debug log |
| 128 | * @s: sequence file pointer |
| 129 | * @unused: unused. |
| 130 | * |
| 131 | * Return: 0 |
| 132 | */ |
| 133 | static int ti_sci_debug_show(struct seq_file *s, void *unused) |
| 134 | { |
| 135 | struct ti_sci_info *info = s->private; |
| 136 | |
| 137 | memcpy_fromio(info->debug_buffer, info->debug_region, |
| 138 | info->debug_region_size); |
| 139 | /* |
| 140 | * We don't trust firmware to leave NULL terminated last byte (hence |
| 141 | * we have allocated 1 extra 0 byte). Since we cannot guarantee any |
| 142 | * specific data format for debug messages, We just present the data |
| 143 | * in the buffer as is - we expect the messages to be self explanatory. |
| 144 | */ |
| 145 | seq_puts(s, info->debug_buffer); |
| 146 | return 0; |
| 147 | } |
| 148 | |
Yangtao Li | 5953c88 | 2019-01-30 10:21:44 -0800 | [diff] [blame] | 149 | /* Provide the log file operations interface*/ |
| 150 | DEFINE_SHOW_ATTRIBUTE(ti_sci_debug); |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 151 | |
| 152 | /** |
| 153 | * ti_sci_debugfs_create() - Create log debug file |
| 154 | * @pdev: platform device pointer |
| 155 | * @info: Pointer to SCI entity information |
| 156 | * |
| 157 | * Return: 0 if all went fine, else corresponding error. |
| 158 | */ |
| 159 | static int ti_sci_debugfs_create(struct platform_device *pdev, |
| 160 | struct ti_sci_info *info) |
| 161 | { |
| 162 | struct device *dev = &pdev->dev; |
| 163 | struct resource *res; |
Christophe JAILLET | 964946b | 2023-10-30 11:12:26 +0100 | [diff] [blame] | 164 | char debug_name[50]; |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 165 | |
| 166 | /* Debug region is optional */ |
| 167 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 168 | "debug_messages"); |
| 169 | info->debug_region = devm_ioremap_resource(dev, res); |
| 170 | if (IS_ERR(info->debug_region)) |
| 171 | return 0; |
| 172 | info->debug_region_size = resource_size(res); |
| 173 | |
| 174 | info->debug_buffer = devm_kcalloc(dev, info->debug_region_size + 1, |
| 175 | sizeof(char), GFP_KERNEL); |
| 176 | if (!info->debug_buffer) |
| 177 | return -ENOMEM; |
| 178 | /* Setup NULL termination */ |
| 179 | info->debug_buffer[info->debug_region_size] = 0; |
| 180 | |
Christophe JAILLET | 964946b | 2023-10-30 11:12:26 +0100 | [diff] [blame] | 181 | snprintf(debug_name, sizeof(debug_name), "ti_sci_debug@%s", |
| 182 | dev_name(dev)); |
| 183 | info->d = debugfs_create_file(debug_name, 0444, NULL, info, |
| 184 | &ti_sci_debug_fops); |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 185 | if (IS_ERR(info->d)) |
| 186 | return PTR_ERR(info->d); |
| 187 | |
| 188 | dev_dbg(dev, "Debug region => %p, size = %zu bytes, resource: %pr\n", |
| 189 | info->debug_region, info->debug_region_size, res); |
| 190 | return 0; |
| 191 | } |
| 192 | |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 193 | #else /* CONFIG_DEBUG_FS */ |
| 194 | static inline int ti_sci_debugfs_create(struct platform_device *dev, |
| 195 | struct ti_sci_info *info) |
| 196 | { |
| 197 | return 0; |
| 198 | } |
| 199 | |
| 200 | static inline void ti_sci_debugfs_destroy(struct platform_device *dev, |
| 201 | struct ti_sci_info *info) |
| 202 | { |
| 203 | } |
| 204 | #endif /* CONFIG_DEBUG_FS */ |
| 205 | |
| 206 | /** |
| 207 | * ti_sci_dump_header_dbg() - Helper to dump a message header. |
| 208 | * @dev: Device pointer corresponding to the SCI entity |
| 209 | * @hdr: pointer to header. |
| 210 | */ |
| 211 | static inline void ti_sci_dump_header_dbg(struct device *dev, |
| 212 | struct ti_sci_msg_hdr *hdr) |
| 213 | { |
| 214 | dev_dbg(dev, "MSGHDR:type=0x%04x host=0x%02x seq=0x%02x flags=0x%08x\n", |
| 215 | hdr->type, hdr->host, hdr->seq, hdr->flags); |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * ti_sci_rx_callback() - mailbox client callback for receive messages |
| 220 | * @cl: client pointer |
| 221 | * @m: mailbox message |
| 222 | * |
| 223 | * Processes one received message to appropriate transfer information and |
| 224 | * signals completion of the transfer. |
| 225 | * |
| 226 | * NOTE: This function will be invoked in IRQ context, hence should be |
| 227 | * as optimal as possible. |
| 228 | */ |
| 229 | static void ti_sci_rx_callback(struct mbox_client *cl, void *m) |
| 230 | { |
| 231 | struct ti_sci_info *info = cl_to_ti_sci_info(cl); |
| 232 | struct device *dev = info->dev; |
| 233 | struct ti_sci_xfers_info *minfo = &info->minfo; |
| 234 | struct ti_msgmgr_message *mbox_msg = m; |
| 235 | struct ti_sci_msg_hdr *hdr = (struct ti_sci_msg_hdr *)mbox_msg->buf; |
| 236 | struct ti_sci_xfer *xfer; |
| 237 | u8 xfer_id; |
| 238 | |
| 239 | xfer_id = hdr->seq; |
| 240 | |
| 241 | /* |
| 242 | * Are we even expecting this? |
| 243 | * NOTE: barriers were implicit in locks used for modifying the bitmap |
| 244 | */ |
| 245 | if (!test_bit(xfer_id, minfo->xfer_alloc_table)) { |
| 246 | dev_err(dev, "Message for %d is not expected!\n", xfer_id); |
| 247 | return; |
| 248 | } |
| 249 | |
| 250 | xfer = &minfo->xfer_block[xfer_id]; |
| 251 | |
| 252 | /* Is the message of valid length? */ |
| 253 | if (mbox_msg->len > info->desc->max_msg_size) { |
Nishanth Menon | bd0fa74 | 2017-12-16 14:41:33 -0800 | [diff] [blame] | 254 | dev_err(dev, "Unable to handle %zu xfer(max %d)\n", |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 255 | mbox_msg->len, info->desc->max_msg_size); |
| 256 | ti_sci_dump_header_dbg(dev, hdr); |
| 257 | return; |
| 258 | } |
| 259 | if (mbox_msg->len < xfer->rx_len) { |
Nishanth Menon | bd0fa74 | 2017-12-16 14:41:33 -0800 | [diff] [blame] | 260 | dev_err(dev, "Recv xfer %zu < expected %d length\n", |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 261 | mbox_msg->len, xfer->rx_len); |
| 262 | ti_sci_dump_header_dbg(dev, hdr); |
| 263 | return; |
| 264 | } |
| 265 | |
| 266 | ti_sci_dump_header_dbg(dev, hdr); |
| 267 | /* Take a copy to the rx buffer.. */ |
| 268 | memcpy(xfer->xfer_buf, mbox_msg->buf, xfer->rx_len); |
| 269 | complete(&xfer->done); |
| 270 | } |
| 271 | |
| 272 | /** |
| 273 | * ti_sci_get_one_xfer() - Allocate one message |
| 274 | * @info: Pointer to SCI entity information |
| 275 | * @msg_type: Message type |
| 276 | * @msg_flags: Flag to set for the message |
| 277 | * @tx_message_size: transmit message size |
| 278 | * @rx_message_size: receive message size |
| 279 | * |
| 280 | * Helper function which is used by various command functions that are |
| 281 | * exposed to clients of this driver for allocating a message traffic event. |
| 282 | * |
| 283 | * This function can sleep depending on pending requests already in the system |
| 284 | * for the SCI entity. Further, this also holds a spinlock to maintain integrity |
| 285 | * of internal data structures. |
| 286 | * |
| 287 | * Return: 0 if all went fine, else corresponding error. |
| 288 | */ |
| 289 | static struct ti_sci_xfer *ti_sci_get_one_xfer(struct ti_sci_info *info, |
| 290 | u16 msg_type, u32 msg_flags, |
| 291 | size_t tx_message_size, |
| 292 | size_t rx_message_size) |
| 293 | { |
| 294 | struct ti_sci_xfers_info *minfo = &info->minfo; |
| 295 | struct ti_sci_xfer *xfer; |
| 296 | struct ti_sci_msg_hdr *hdr; |
| 297 | unsigned long flags; |
| 298 | unsigned long bit_pos; |
| 299 | u8 xfer_id; |
| 300 | int ret; |
| 301 | int timeout; |
| 302 | |
| 303 | /* Ensure we have sane transfer sizes */ |
| 304 | if (rx_message_size > info->desc->max_msg_size || |
| 305 | tx_message_size > info->desc->max_msg_size || |
| 306 | rx_message_size < sizeof(*hdr) || tx_message_size < sizeof(*hdr)) |
| 307 | return ERR_PTR(-ERANGE); |
| 308 | |
| 309 | /* |
| 310 | * Ensure we have only controlled number of pending messages. |
| 311 | * Ideally, we might just have to wait a single message, be |
| 312 | * conservative and wait 5 times that.. |
| 313 | */ |
| 314 | timeout = msecs_to_jiffies(info->desc->max_rx_timeout_ms) * 5; |
| 315 | ret = down_timeout(&minfo->sem_xfer_count, timeout); |
| 316 | if (ret < 0) |
| 317 | return ERR_PTR(ret); |
| 318 | |
| 319 | /* Keep the locked section as small as possible */ |
| 320 | spin_lock_irqsave(&minfo->xfer_lock, flags); |
| 321 | bit_pos = find_first_zero_bit(minfo->xfer_alloc_table, |
| 322 | info->desc->max_msgs); |
| 323 | set_bit(bit_pos, minfo->xfer_alloc_table); |
| 324 | spin_unlock_irqrestore(&minfo->xfer_lock, flags); |
| 325 | |
| 326 | /* |
| 327 | * We already ensured in probe that we can have max messages that can |
| 328 | * fit in hdr.seq - NOTE: this improves access latencies |
| 329 | * to predictable O(1) access, BUT, it opens us to risk if |
| 330 | * remote misbehaves with corrupted message sequence responses. |
| 331 | * If that happens, we are going to be messed up anyways.. |
| 332 | */ |
| 333 | xfer_id = (u8)bit_pos; |
| 334 | |
| 335 | xfer = &minfo->xfer_block[xfer_id]; |
| 336 | |
| 337 | hdr = (struct ti_sci_msg_hdr *)xfer->tx_message.buf; |
| 338 | xfer->tx_message.len = tx_message_size; |
Dave Gerlach | b9e8a7d | 2022-04-12 14:21:38 -0500 | [diff] [blame] | 339 | xfer->tx_message.chan_rx = info->chan_rx; |
| 340 | xfer->tx_message.timeout_rx_ms = info->desc->max_rx_timeout_ms; |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 341 | xfer->rx_len = (u8)rx_message_size; |
| 342 | |
| 343 | reinit_completion(&xfer->done); |
| 344 | |
| 345 | hdr->seq = xfer_id; |
| 346 | hdr->type = msg_type; |
Nishanth Menon | e69a355 | 2018-08-28 13:22:13 -0700 | [diff] [blame] | 347 | hdr->host = info->host_id; |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 348 | hdr->flags = msg_flags; |
| 349 | |
| 350 | return xfer; |
| 351 | } |
| 352 | |
| 353 | /** |
| 354 | * ti_sci_put_one_xfer() - Release a message |
| 355 | * @minfo: transfer info pointer |
| 356 | * @xfer: message that was reserved by ti_sci_get_one_xfer |
| 357 | * |
| 358 | * This holds a spinlock to maintain integrity of internal data structures. |
| 359 | */ |
| 360 | static void ti_sci_put_one_xfer(struct ti_sci_xfers_info *minfo, |
| 361 | struct ti_sci_xfer *xfer) |
| 362 | { |
| 363 | unsigned long flags; |
| 364 | struct ti_sci_msg_hdr *hdr; |
| 365 | u8 xfer_id; |
| 366 | |
| 367 | hdr = (struct ti_sci_msg_hdr *)xfer->tx_message.buf; |
| 368 | xfer_id = hdr->seq; |
| 369 | |
| 370 | /* |
| 371 | * Keep the locked section as small as possible |
| 372 | * NOTE: we might escape with smp_mb and no lock here.. |
| 373 | * but just be conservative and symmetric. |
| 374 | */ |
| 375 | spin_lock_irqsave(&minfo->xfer_lock, flags); |
| 376 | clear_bit(xfer_id, minfo->xfer_alloc_table); |
| 377 | spin_unlock_irqrestore(&minfo->xfer_lock, flags); |
| 378 | |
| 379 | /* Increment the count for the next user to get through */ |
| 380 | up(&minfo->sem_xfer_count); |
| 381 | } |
| 382 | |
| 383 | /** |
| 384 | * ti_sci_do_xfer() - Do one transfer |
| 385 | * @info: Pointer to SCI entity information |
| 386 | * @xfer: Transfer to initiate and wait for response |
| 387 | * |
| 388 | * Return: -ETIMEDOUT in case of no response, if transmit error, |
| 389 | * return corresponding error, else if all goes well, |
| 390 | * return 0. |
| 391 | */ |
| 392 | static inline int ti_sci_do_xfer(struct ti_sci_info *info, |
| 393 | struct ti_sci_xfer *xfer) |
| 394 | { |
| 395 | int ret; |
| 396 | int timeout; |
| 397 | struct device *dev = info->dev; |
Dave Gerlach | b9e8a7d | 2022-04-12 14:21:38 -0500 | [diff] [blame] | 398 | bool done_state = true; |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 399 | |
| 400 | ret = mbox_send_message(info->chan_tx, &xfer->tx_message); |
| 401 | if (ret < 0) |
| 402 | return ret; |
| 403 | |
| 404 | ret = 0; |
| 405 | |
Nishanth Menon | 9225bcd | 2023-06-20 08:03:29 -0500 | [diff] [blame] | 406 | if (system_state <= SYSTEM_RUNNING) { |
Dave Gerlach | b9e8a7d | 2022-04-12 14:21:38 -0500 | [diff] [blame] | 407 | /* And we wait for the response. */ |
| 408 | timeout = msecs_to_jiffies(info->desc->max_rx_timeout_ms); |
| 409 | if (!wait_for_completion_timeout(&xfer->done, timeout)) |
| 410 | ret = -ETIMEDOUT; |
| 411 | } else { |
| 412 | /* |
Nishanth Menon | 9225bcd | 2023-06-20 08:03:29 -0500 | [diff] [blame] | 413 | * If we are !running, we cannot use wait_for_completion_timeout |
Dave Gerlach | b9e8a7d | 2022-04-12 14:21:38 -0500 | [diff] [blame] | 414 | * during noirq phase, so we must manually poll the completion. |
| 415 | */ |
| 416 | ret = read_poll_timeout_atomic(try_wait_for_completion, done_state, |
Georgi Vlaev | b13b2c3 | 2022-10-21 21:57:04 +0300 | [diff] [blame] | 417 | done_state, 1, |
Dave Gerlach | b9e8a7d | 2022-04-12 14:21:38 -0500 | [diff] [blame] | 418 | info->desc->max_rx_timeout_ms * 1000, |
| 419 | false, &xfer->done); |
| 420 | } |
| 421 | |
Georgi Vlaev | b13b2c3 | 2022-10-21 21:57:04 +0300 | [diff] [blame] | 422 | if (ret == -ETIMEDOUT) |
Helge Deller | 595f3a9 | 2017-10-09 09:54:14 -0700 | [diff] [blame] | 423 | dev_err(dev, "Mbox timedout in resp(caller: %pS)\n", |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 424 | (void *)_RET_IP_); |
Dave Gerlach | b9e8a7d | 2022-04-12 14:21:38 -0500 | [diff] [blame] | 425 | |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 426 | /* |
| 427 | * NOTE: we might prefer not to need the mailbox ticker to manage the |
| 428 | * transfer queueing since the protocol layer queues things by itself. |
| 429 | * Unfortunately, we have to kick the mailbox framework after we have |
| 430 | * received our message. |
| 431 | */ |
| 432 | mbox_client_txdone(info->chan_tx, ret); |
| 433 | |
| 434 | return ret; |
| 435 | } |
| 436 | |
| 437 | /** |
| 438 | * ti_sci_cmd_get_revision() - command to get the revision of the SCI entity |
| 439 | * @info: Pointer to SCI entity information |
| 440 | * |
| 441 | * Updates the SCI information in the internal data structure. |
| 442 | * |
| 443 | * Return: 0 if all went fine, else return appropriate error. |
| 444 | */ |
| 445 | static int ti_sci_cmd_get_revision(struct ti_sci_info *info) |
| 446 | { |
| 447 | struct device *dev = info->dev; |
| 448 | struct ti_sci_handle *handle = &info->handle; |
| 449 | struct ti_sci_version_info *ver = &handle->version; |
| 450 | struct ti_sci_msg_resp_version *rev_info; |
| 451 | struct ti_sci_xfer *xfer; |
| 452 | int ret; |
| 453 | |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 454 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_VERSION, |
Andrew F. Davis | 66f030e | 2019-05-28 11:55:10 -0400 | [diff] [blame] | 455 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 456 | sizeof(struct ti_sci_msg_hdr), |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 457 | sizeof(*rev_info)); |
| 458 | if (IS_ERR(xfer)) { |
| 459 | ret = PTR_ERR(xfer); |
| 460 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 461 | return ret; |
| 462 | } |
| 463 | |
| 464 | rev_info = (struct ti_sci_msg_resp_version *)xfer->xfer_buf; |
| 465 | |
| 466 | ret = ti_sci_do_xfer(info, xfer); |
| 467 | if (ret) { |
| 468 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 469 | goto fail; |
| 470 | } |
| 471 | |
| 472 | ver->abi_major = rev_info->abi_major; |
| 473 | ver->abi_minor = rev_info->abi_minor; |
| 474 | ver->firmware_revision = rev_info->firmware_revision; |
Justin Stitt | d8cce0d | 2023-09-13 20:23:02 +0000 | [diff] [blame] | 475 | strscpy(ver->firmware_description, rev_info->firmware_description, |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 476 | sizeof(ver->firmware_description)); |
| 477 | |
| 478 | fail: |
| 479 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 480 | return ret; |
| 481 | } |
| 482 | |
| 483 | /** |
Nishanth Menon | 9e7d756 | 2016-10-18 18:08:35 -0500 | [diff] [blame] | 484 | * ti_sci_is_response_ack() - Generic ACK/NACK message checkup |
| 485 | * @r: pointer to response buffer |
| 486 | * |
| 487 | * Return: true if the response was an ACK, else returns false. |
| 488 | */ |
| 489 | static inline bool ti_sci_is_response_ack(void *r) |
| 490 | { |
| 491 | struct ti_sci_msg_hdr *hdr = r; |
| 492 | |
| 493 | return hdr->flags & TI_SCI_FLAG_RESP_GENERIC_ACK ? true : false; |
| 494 | } |
| 495 | |
| 496 | /** |
| 497 | * ti_sci_set_device_state() - Set device state helper |
| 498 | * @handle: pointer to TI SCI handle |
| 499 | * @id: Device identifier |
| 500 | * @flags: flags to setup for the device |
| 501 | * @state: State to move the device to |
| 502 | * |
| 503 | * Return: 0 if all went well, else returns appropriate error value. |
| 504 | */ |
| 505 | static int ti_sci_set_device_state(const struct ti_sci_handle *handle, |
| 506 | u32 id, u32 flags, u8 state) |
| 507 | { |
| 508 | struct ti_sci_info *info; |
| 509 | struct ti_sci_msg_req_set_device_state *req; |
| 510 | struct ti_sci_msg_hdr *resp; |
| 511 | struct ti_sci_xfer *xfer; |
| 512 | struct device *dev; |
| 513 | int ret = 0; |
| 514 | |
| 515 | if (IS_ERR(handle)) |
| 516 | return PTR_ERR(handle); |
| 517 | if (!handle) |
| 518 | return -EINVAL; |
| 519 | |
| 520 | info = handle_to_ti_sci_info(handle); |
| 521 | dev = info->dev; |
| 522 | |
| 523 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_DEVICE_STATE, |
| 524 | flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 525 | sizeof(*req), sizeof(*resp)); |
| 526 | if (IS_ERR(xfer)) { |
| 527 | ret = PTR_ERR(xfer); |
| 528 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 529 | return ret; |
| 530 | } |
| 531 | req = (struct ti_sci_msg_req_set_device_state *)xfer->xfer_buf; |
| 532 | req->id = id; |
| 533 | req->state = state; |
| 534 | |
| 535 | ret = ti_sci_do_xfer(info, xfer); |
| 536 | if (ret) { |
| 537 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 538 | goto fail; |
| 539 | } |
| 540 | |
| 541 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; |
| 542 | |
| 543 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; |
| 544 | |
| 545 | fail: |
| 546 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 547 | |
| 548 | return ret; |
| 549 | } |
| 550 | |
| 551 | /** |
| 552 | * ti_sci_get_device_state() - Get device state helper |
| 553 | * @handle: Handle to the device |
| 554 | * @id: Device Identifier |
| 555 | * @clcnt: Pointer to Context Loss Count |
| 556 | * @resets: pointer to resets |
| 557 | * @p_state: pointer to p_state |
| 558 | * @c_state: pointer to c_state |
| 559 | * |
| 560 | * Return: 0 if all went fine, else return appropriate error. |
| 561 | */ |
| 562 | static int ti_sci_get_device_state(const struct ti_sci_handle *handle, |
| 563 | u32 id, u32 *clcnt, u32 *resets, |
| 564 | u8 *p_state, u8 *c_state) |
| 565 | { |
| 566 | struct ti_sci_info *info; |
| 567 | struct ti_sci_msg_req_get_device_state *req; |
| 568 | struct ti_sci_msg_resp_get_device_state *resp; |
| 569 | struct ti_sci_xfer *xfer; |
| 570 | struct device *dev; |
| 571 | int ret = 0; |
| 572 | |
| 573 | if (IS_ERR(handle)) |
| 574 | return PTR_ERR(handle); |
| 575 | if (!handle) |
| 576 | return -EINVAL; |
| 577 | |
| 578 | if (!clcnt && !resets && !p_state && !c_state) |
| 579 | return -EINVAL; |
| 580 | |
| 581 | info = handle_to_ti_sci_info(handle); |
| 582 | dev = info->dev; |
| 583 | |
Nishanth Menon | 9e7d756 | 2016-10-18 18:08:35 -0500 | [diff] [blame] | 584 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_DEVICE_STATE, |
Andrew F. Davis | 66f030e | 2019-05-28 11:55:10 -0400 | [diff] [blame] | 585 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 586 | sizeof(*req), sizeof(*resp)); |
Nishanth Menon | 9e7d756 | 2016-10-18 18:08:35 -0500 | [diff] [blame] | 587 | if (IS_ERR(xfer)) { |
| 588 | ret = PTR_ERR(xfer); |
| 589 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 590 | return ret; |
| 591 | } |
| 592 | req = (struct ti_sci_msg_req_get_device_state *)xfer->xfer_buf; |
| 593 | req->id = id; |
| 594 | |
| 595 | ret = ti_sci_do_xfer(info, xfer); |
| 596 | if (ret) { |
| 597 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 598 | goto fail; |
| 599 | } |
| 600 | |
| 601 | resp = (struct ti_sci_msg_resp_get_device_state *)xfer->xfer_buf; |
| 602 | if (!ti_sci_is_response_ack(resp)) { |
| 603 | ret = -ENODEV; |
| 604 | goto fail; |
| 605 | } |
| 606 | |
| 607 | if (clcnt) |
| 608 | *clcnt = resp->context_loss_count; |
| 609 | if (resets) |
| 610 | *resets = resp->resets; |
| 611 | if (p_state) |
| 612 | *p_state = resp->programmed_state; |
| 613 | if (c_state) |
| 614 | *c_state = resp->current_state; |
| 615 | fail: |
| 616 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 617 | |
| 618 | return ret; |
| 619 | } |
| 620 | |
| 621 | /** |
| 622 | * ti_sci_cmd_get_device() - command to request for device managed by TISCI |
Lokesh Vutla | 45b659e | 2019-08-26 20:00:40 -0700 | [diff] [blame] | 623 | * that can be shared with other hosts. |
Nishanth Menon | 9e7d756 | 2016-10-18 18:08:35 -0500 | [diff] [blame] | 624 | * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle |
| 625 | * @id: Device Identifier |
| 626 | * |
| 627 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 628 | * usage count by balancing get_device with put_device. No refcounting is |
| 629 | * managed by driver for that purpose. |
| 630 | * |
Nishanth Menon | 9e7d756 | 2016-10-18 18:08:35 -0500 | [diff] [blame] | 631 | * Return: 0 if all went fine, else return appropriate error. |
| 632 | */ |
| 633 | static int ti_sci_cmd_get_device(const struct ti_sci_handle *handle, u32 id) |
| 634 | { |
Lokesh Vutla | 45b659e | 2019-08-26 20:00:40 -0700 | [diff] [blame] | 635 | return ti_sci_set_device_state(handle, id, 0, |
| 636 | MSG_DEVICE_SW_STATE_ON); |
| 637 | } |
| 638 | |
| 639 | /** |
| 640 | * ti_sci_cmd_get_device_exclusive() - command to request for device managed by |
| 641 | * TISCI that is exclusively owned by the |
| 642 | * requesting host. |
| 643 | * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle |
| 644 | * @id: Device Identifier |
| 645 | * |
| 646 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 647 | * usage count by balancing get_device with put_device. No refcounting is |
| 648 | * managed by driver for that purpose. |
| 649 | * |
| 650 | * Return: 0 if all went fine, else return appropriate error. |
| 651 | */ |
| 652 | static int ti_sci_cmd_get_device_exclusive(const struct ti_sci_handle *handle, |
| 653 | u32 id) |
| 654 | { |
Nishanth Menon | 9e7d756 | 2016-10-18 18:08:35 -0500 | [diff] [blame] | 655 | return ti_sci_set_device_state(handle, id, |
| 656 | MSG_FLAG_DEVICE_EXCLUSIVE, |
| 657 | MSG_DEVICE_SW_STATE_ON); |
| 658 | } |
| 659 | |
| 660 | /** |
| 661 | * ti_sci_cmd_idle_device() - Command to idle a device managed by TISCI |
| 662 | * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle |
| 663 | * @id: Device Identifier |
| 664 | * |
| 665 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 666 | * usage count by balancing get_device with put_device. No refcounting is |
| 667 | * managed by driver for that purpose. |
| 668 | * |
| 669 | * Return: 0 if all went fine, else return appropriate error. |
| 670 | */ |
| 671 | static int ti_sci_cmd_idle_device(const struct ti_sci_handle *handle, u32 id) |
| 672 | { |
Lokesh Vutla | 45b659e | 2019-08-26 20:00:40 -0700 | [diff] [blame] | 673 | return ti_sci_set_device_state(handle, id, 0, |
| 674 | MSG_DEVICE_SW_STATE_RETENTION); |
| 675 | } |
| 676 | |
| 677 | /** |
| 678 | * ti_sci_cmd_idle_device_exclusive() - Command to idle a device managed by |
| 679 | * TISCI that is exclusively owned by |
| 680 | * requesting host. |
| 681 | * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle |
| 682 | * @id: Device Identifier |
| 683 | * |
| 684 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 685 | * usage count by balancing get_device with put_device. No refcounting is |
| 686 | * managed by driver for that purpose. |
| 687 | * |
| 688 | * Return: 0 if all went fine, else return appropriate error. |
| 689 | */ |
| 690 | static int ti_sci_cmd_idle_device_exclusive(const struct ti_sci_handle *handle, |
| 691 | u32 id) |
| 692 | { |
Nishanth Menon | 9e7d756 | 2016-10-18 18:08:35 -0500 | [diff] [blame] | 693 | return ti_sci_set_device_state(handle, id, |
| 694 | MSG_FLAG_DEVICE_EXCLUSIVE, |
| 695 | MSG_DEVICE_SW_STATE_RETENTION); |
| 696 | } |
| 697 | |
| 698 | /** |
| 699 | * ti_sci_cmd_put_device() - command to release a device managed by TISCI |
| 700 | * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle |
| 701 | * @id: Device Identifier |
| 702 | * |
| 703 | * Request for the device - NOTE: the client MUST maintain integrity of |
| 704 | * usage count by balancing get_device with put_device. No refcounting is |
| 705 | * managed by driver for that purpose. |
| 706 | * |
| 707 | * Return: 0 if all went fine, else return appropriate error. |
| 708 | */ |
| 709 | static int ti_sci_cmd_put_device(const struct ti_sci_handle *handle, u32 id) |
| 710 | { |
| 711 | return ti_sci_set_device_state(handle, id, |
| 712 | 0, MSG_DEVICE_SW_STATE_AUTO_OFF); |
| 713 | } |
| 714 | |
| 715 | /** |
| 716 | * ti_sci_cmd_dev_is_valid() - Is the device valid |
| 717 | * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle |
| 718 | * @id: Device Identifier |
| 719 | * |
| 720 | * Return: 0 if all went fine and the device ID is valid, else return |
| 721 | * appropriate error. |
| 722 | */ |
| 723 | static int ti_sci_cmd_dev_is_valid(const struct ti_sci_handle *handle, u32 id) |
| 724 | { |
| 725 | u8 unused; |
| 726 | |
| 727 | /* check the device state which will also tell us if the ID is valid */ |
| 728 | return ti_sci_get_device_state(handle, id, NULL, NULL, NULL, &unused); |
| 729 | } |
| 730 | |
| 731 | /** |
| 732 | * ti_sci_cmd_dev_get_clcnt() - Get context loss counter |
| 733 | * @handle: Pointer to TISCI handle |
| 734 | * @id: Device Identifier |
| 735 | * @count: Pointer to Context Loss counter to populate |
| 736 | * |
| 737 | * Return: 0 if all went fine, else return appropriate error. |
| 738 | */ |
| 739 | static int ti_sci_cmd_dev_get_clcnt(const struct ti_sci_handle *handle, u32 id, |
| 740 | u32 *count) |
| 741 | { |
| 742 | return ti_sci_get_device_state(handle, id, count, NULL, NULL, NULL); |
| 743 | } |
| 744 | |
| 745 | /** |
| 746 | * ti_sci_cmd_dev_is_idle() - Check if the device is requested to be idle |
| 747 | * @handle: Pointer to TISCI handle |
| 748 | * @id: Device Identifier |
| 749 | * @r_state: true if requested to be idle |
| 750 | * |
| 751 | * Return: 0 if all went fine, else return appropriate error. |
| 752 | */ |
| 753 | static int ti_sci_cmd_dev_is_idle(const struct ti_sci_handle *handle, u32 id, |
| 754 | bool *r_state) |
| 755 | { |
| 756 | int ret; |
| 757 | u8 state; |
| 758 | |
| 759 | if (!r_state) |
| 760 | return -EINVAL; |
| 761 | |
| 762 | ret = ti_sci_get_device_state(handle, id, NULL, NULL, &state, NULL); |
| 763 | if (ret) |
| 764 | return ret; |
| 765 | |
| 766 | *r_state = (state == MSG_DEVICE_SW_STATE_RETENTION); |
| 767 | |
| 768 | return 0; |
| 769 | } |
| 770 | |
| 771 | /** |
| 772 | * ti_sci_cmd_dev_is_stop() - Check if the device is requested to be stopped |
| 773 | * @handle: Pointer to TISCI handle |
| 774 | * @id: Device Identifier |
| 775 | * @r_state: true if requested to be stopped |
| 776 | * @curr_state: true if currently stopped. |
| 777 | * |
| 778 | * Return: 0 if all went fine, else return appropriate error. |
| 779 | */ |
| 780 | static int ti_sci_cmd_dev_is_stop(const struct ti_sci_handle *handle, u32 id, |
| 781 | bool *r_state, bool *curr_state) |
| 782 | { |
| 783 | int ret; |
| 784 | u8 p_state, c_state; |
| 785 | |
| 786 | if (!r_state && !curr_state) |
| 787 | return -EINVAL; |
| 788 | |
| 789 | ret = |
| 790 | ti_sci_get_device_state(handle, id, NULL, NULL, &p_state, &c_state); |
| 791 | if (ret) |
| 792 | return ret; |
| 793 | |
| 794 | if (r_state) |
| 795 | *r_state = (p_state == MSG_DEVICE_SW_STATE_AUTO_OFF); |
| 796 | if (curr_state) |
| 797 | *curr_state = (c_state == MSG_DEVICE_HW_STATE_OFF); |
| 798 | |
| 799 | return 0; |
| 800 | } |
| 801 | |
| 802 | /** |
| 803 | * ti_sci_cmd_dev_is_on() - Check if the device is requested to be ON |
| 804 | * @handle: Pointer to TISCI handle |
| 805 | * @id: Device Identifier |
| 806 | * @r_state: true if requested to be ON |
| 807 | * @curr_state: true if currently ON and active |
| 808 | * |
| 809 | * Return: 0 if all went fine, else return appropriate error. |
| 810 | */ |
| 811 | static int ti_sci_cmd_dev_is_on(const struct ti_sci_handle *handle, u32 id, |
| 812 | bool *r_state, bool *curr_state) |
| 813 | { |
| 814 | int ret; |
| 815 | u8 p_state, c_state; |
| 816 | |
| 817 | if (!r_state && !curr_state) |
| 818 | return -EINVAL; |
| 819 | |
| 820 | ret = |
| 821 | ti_sci_get_device_state(handle, id, NULL, NULL, &p_state, &c_state); |
| 822 | if (ret) |
| 823 | return ret; |
| 824 | |
| 825 | if (r_state) |
| 826 | *r_state = (p_state == MSG_DEVICE_SW_STATE_ON); |
| 827 | if (curr_state) |
| 828 | *curr_state = (c_state == MSG_DEVICE_HW_STATE_ON); |
| 829 | |
| 830 | return 0; |
| 831 | } |
| 832 | |
| 833 | /** |
| 834 | * ti_sci_cmd_dev_is_trans() - Check if the device is currently transitioning |
| 835 | * @handle: Pointer to TISCI handle |
| 836 | * @id: Device Identifier |
| 837 | * @curr_state: true if currently transitioning. |
| 838 | * |
| 839 | * Return: 0 if all went fine, else return appropriate error. |
| 840 | */ |
| 841 | static int ti_sci_cmd_dev_is_trans(const struct ti_sci_handle *handle, u32 id, |
| 842 | bool *curr_state) |
| 843 | { |
| 844 | int ret; |
| 845 | u8 state; |
| 846 | |
| 847 | if (!curr_state) |
| 848 | return -EINVAL; |
| 849 | |
| 850 | ret = ti_sci_get_device_state(handle, id, NULL, NULL, NULL, &state); |
| 851 | if (ret) |
| 852 | return ret; |
| 853 | |
| 854 | *curr_state = (state == MSG_DEVICE_HW_STATE_TRANS); |
| 855 | |
| 856 | return 0; |
| 857 | } |
| 858 | |
| 859 | /** |
| 860 | * ti_sci_cmd_set_device_resets() - command to set resets for device managed |
| 861 | * by TISCI |
| 862 | * @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle |
| 863 | * @id: Device Identifier |
| 864 | * @reset_state: Device specific reset bit field |
| 865 | * |
| 866 | * Return: 0 if all went fine, else return appropriate error. |
| 867 | */ |
| 868 | static int ti_sci_cmd_set_device_resets(const struct ti_sci_handle *handle, |
| 869 | u32 id, u32 reset_state) |
| 870 | { |
| 871 | struct ti_sci_info *info; |
| 872 | struct ti_sci_msg_req_set_device_resets *req; |
| 873 | struct ti_sci_msg_hdr *resp; |
| 874 | struct ti_sci_xfer *xfer; |
| 875 | struct device *dev; |
| 876 | int ret = 0; |
| 877 | |
| 878 | if (IS_ERR(handle)) |
| 879 | return PTR_ERR(handle); |
| 880 | if (!handle) |
| 881 | return -EINVAL; |
| 882 | |
| 883 | info = handle_to_ti_sci_info(handle); |
| 884 | dev = info->dev; |
| 885 | |
| 886 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_DEVICE_RESETS, |
| 887 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 888 | sizeof(*req), sizeof(*resp)); |
| 889 | if (IS_ERR(xfer)) { |
| 890 | ret = PTR_ERR(xfer); |
| 891 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 892 | return ret; |
| 893 | } |
| 894 | req = (struct ti_sci_msg_req_set_device_resets *)xfer->xfer_buf; |
| 895 | req->id = id; |
| 896 | req->resets = reset_state; |
| 897 | |
| 898 | ret = ti_sci_do_xfer(info, xfer); |
| 899 | if (ret) { |
| 900 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 901 | goto fail; |
| 902 | } |
| 903 | |
| 904 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; |
| 905 | |
| 906 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; |
| 907 | |
| 908 | fail: |
| 909 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 910 | |
| 911 | return ret; |
| 912 | } |
| 913 | |
| 914 | /** |
| 915 | * ti_sci_cmd_get_device_resets() - Get reset state for device managed |
| 916 | * by TISCI |
| 917 | * @handle: Pointer to TISCI handle |
| 918 | * @id: Device Identifier |
| 919 | * @reset_state: Pointer to reset state to populate |
| 920 | * |
| 921 | * Return: 0 if all went fine, else return appropriate error. |
| 922 | */ |
| 923 | static int ti_sci_cmd_get_device_resets(const struct ti_sci_handle *handle, |
| 924 | u32 id, u32 *reset_state) |
| 925 | { |
| 926 | return ti_sci_get_device_state(handle, id, NULL, reset_state, NULL, |
| 927 | NULL); |
| 928 | } |
| 929 | |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 930 | /** |
| 931 | * ti_sci_set_clock_state() - Set clock state helper |
| 932 | * @handle: pointer to TI SCI handle |
| 933 | * @dev_id: Device identifier this request is for |
| 934 | * @clk_id: Clock identifier for the device for this request. |
| 935 | * Each device has it's own set of clock inputs. This indexes |
| 936 | * which clock input to modify. |
| 937 | * @flags: Header flags as needed |
| 938 | * @state: State to request for the clock. |
| 939 | * |
| 940 | * Return: 0 if all went well, else returns appropriate error value. |
| 941 | */ |
| 942 | static int ti_sci_set_clock_state(const struct ti_sci_handle *handle, |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 943 | u32 dev_id, u32 clk_id, |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 944 | u32 flags, u8 state) |
| 945 | { |
| 946 | struct ti_sci_info *info; |
| 947 | struct ti_sci_msg_req_set_clock_state *req; |
| 948 | struct ti_sci_msg_hdr *resp; |
| 949 | struct ti_sci_xfer *xfer; |
| 950 | struct device *dev; |
| 951 | int ret = 0; |
| 952 | |
| 953 | if (IS_ERR(handle)) |
| 954 | return PTR_ERR(handle); |
| 955 | if (!handle) |
| 956 | return -EINVAL; |
| 957 | |
| 958 | info = handle_to_ti_sci_info(handle); |
| 959 | dev = info->dev; |
| 960 | |
| 961 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CLOCK_STATE, |
| 962 | flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 963 | sizeof(*req), sizeof(*resp)); |
| 964 | if (IS_ERR(xfer)) { |
| 965 | ret = PTR_ERR(xfer); |
| 966 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 967 | return ret; |
| 968 | } |
| 969 | req = (struct ti_sci_msg_req_set_clock_state *)xfer->xfer_buf; |
| 970 | req->dev_id = dev_id; |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 971 | if (clk_id < 255) { |
| 972 | req->clk_id = clk_id; |
| 973 | } else { |
| 974 | req->clk_id = 255; |
| 975 | req->clk_id_32 = clk_id; |
| 976 | } |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 977 | req->request_state = state; |
| 978 | |
| 979 | ret = ti_sci_do_xfer(info, xfer); |
| 980 | if (ret) { |
| 981 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 982 | goto fail; |
| 983 | } |
| 984 | |
| 985 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; |
| 986 | |
| 987 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; |
| 988 | |
| 989 | fail: |
| 990 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 991 | |
| 992 | return ret; |
| 993 | } |
| 994 | |
| 995 | /** |
| 996 | * ti_sci_cmd_get_clock_state() - Get clock state helper |
| 997 | * @handle: pointer to TI SCI handle |
| 998 | * @dev_id: Device identifier this request is for |
| 999 | * @clk_id: Clock identifier for the device for this request. |
| 1000 | * Each device has it's own set of clock inputs. This indexes |
| 1001 | * which clock input to modify. |
| 1002 | * @programmed_state: State requested for clock to move to |
| 1003 | * @current_state: State that the clock is currently in |
| 1004 | * |
| 1005 | * Return: 0 if all went well, else returns appropriate error value. |
| 1006 | */ |
| 1007 | static int ti_sci_cmd_get_clock_state(const struct ti_sci_handle *handle, |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1008 | u32 dev_id, u32 clk_id, |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1009 | u8 *programmed_state, u8 *current_state) |
| 1010 | { |
| 1011 | struct ti_sci_info *info; |
| 1012 | struct ti_sci_msg_req_get_clock_state *req; |
| 1013 | struct ti_sci_msg_resp_get_clock_state *resp; |
| 1014 | struct ti_sci_xfer *xfer; |
| 1015 | struct device *dev; |
| 1016 | int ret = 0; |
| 1017 | |
| 1018 | if (IS_ERR(handle)) |
| 1019 | return PTR_ERR(handle); |
| 1020 | if (!handle) |
| 1021 | return -EINVAL; |
| 1022 | |
| 1023 | if (!programmed_state && !current_state) |
| 1024 | return -EINVAL; |
| 1025 | |
| 1026 | info = handle_to_ti_sci_info(handle); |
| 1027 | dev = info->dev; |
| 1028 | |
| 1029 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_CLOCK_STATE, |
| 1030 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1031 | sizeof(*req), sizeof(*resp)); |
| 1032 | if (IS_ERR(xfer)) { |
| 1033 | ret = PTR_ERR(xfer); |
| 1034 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 1035 | return ret; |
| 1036 | } |
| 1037 | req = (struct ti_sci_msg_req_get_clock_state *)xfer->xfer_buf; |
| 1038 | req->dev_id = dev_id; |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1039 | if (clk_id < 255) { |
| 1040 | req->clk_id = clk_id; |
| 1041 | } else { |
| 1042 | req->clk_id = 255; |
| 1043 | req->clk_id_32 = clk_id; |
| 1044 | } |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1045 | |
| 1046 | ret = ti_sci_do_xfer(info, xfer); |
| 1047 | if (ret) { |
| 1048 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 1049 | goto fail; |
| 1050 | } |
| 1051 | |
| 1052 | resp = (struct ti_sci_msg_resp_get_clock_state *)xfer->xfer_buf; |
| 1053 | |
| 1054 | if (!ti_sci_is_response_ack(resp)) { |
| 1055 | ret = -ENODEV; |
| 1056 | goto fail; |
| 1057 | } |
| 1058 | |
| 1059 | if (programmed_state) |
| 1060 | *programmed_state = resp->programmed_state; |
| 1061 | if (current_state) |
| 1062 | *current_state = resp->current_state; |
| 1063 | |
| 1064 | fail: |
| 1065 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 1066 | |
| 1067 | return ret; |
| 1068 | } |
| 1069 | |
| 1070 | /** |
| 1071 | * ti_sci_cmd_get_clock() - Get control of a clock from TI SCI |
| 1072 | * @handle: pointer to TI SCI handle |
| 1073 | * @dev_id: Device identifier this request is for |
| 1074 | * @clk_id: Clock identifier for the device for this request. |
| 1075 | * Each device has it's own set of clock inputs. This indexes |
| 1076 | * which clock input to modify. |
| 1077 | * @needs_ssc: 'true' if Spread Spectrum clock is desired, else 'false' |
| 1078 | * @can_change_freq: 'true' if frequency change is desired, else 'false' |
| 1079 | * @enable_input_term: 'true' if input termination is desired, else 'false' |
| 1080 | * |
| 1081 | * Return: 0 if all went well, else returns appropriate error value. |
| 1082 | */ |
| 1083 | static int ti_sci_cmd_get_clock(const struct ti_sci_handle *handle, u32 dev_id, |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1084 | u32 clk_id, bool needs_ssc, |
| 1085 | bool can_change_freq, bool enable_input_term) |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1086 | { |
| 1087 | u32 flags = 0; |
| 1088 | |
| 1089 | flags |= needs_ssc ? MSG_FLAG_CLOCK_ALLOW_SSC : 0; |
| 1090 | flags |= can_change_freq ? MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE : 0; |
| 1091 | flags |= enable_input_term ? MSG_FLAG_CLOCK_INPUT_TERM : 0; |
| 1092 | |
| 1093 | return ti_sci_set_clock_state(handle, dev_id, clk_id, flags, |
| 1094 | MSG_CLOCK_SW_STATE_REQ); |
| 1095 | } |
| 1096 | |
| 1097 | /** |
| 1098 | * ti_sci_cmd_idle_clock() - Idle a clock which is in our control |
| 1099 | * @handle: pointer to TI SCI handle |
| 1100 | * @dev_id: Device identifier this request is for |
| 1101 | * @clk_id: Clock identifier for the device for this request. |
| 1102 | * Each device has it's own set of clock inputs. This indexes |
| 1103 | * which clock input to modify. |
| 1104 | * |
| 1105 | * NOTE: This clock must have been requested by get_clock previously. |
| 1106 | * |
| 1107 | * Return: 0 if all went well, else returns appropriate error value. |
| 1108 | */ |
| 1109 | static int ti_sci_cmd_idle_clock(const struct ti_sci_handle *handle, |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1110 | u32 dev_id, u32 clk_id) |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1111 | { |
Tero Kristo | 71b6108 | 2020-09-11 21:47:08 -0700 | [diff] [blame] | 1112 | return ti_sci_set_clock_state(handle, dev_id, clk_id, |
| 1113 | MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE, |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1114 | MSG_CLOCK_SW_STATE_UNREQ); |
| 1115 | } |
| 1116 | |
| 1117 | /** |
| 1118 | * ti_sci_cmd_put_clock() - Release a clock from our control back to TISCI |
| 1119 | * @handle: pointer to TI SCI handle |
| 1120 | * @dev_id: Device identifier this request is for |
| 1121 | * @clk_id: Clock identifier for the device for this request. |
| 1122 | * Each device has it's own set of clock inputs. This indexes |
| 1123 | * which clock input to modify. |
| 1124 | * |
| 1125 | * NOTE: This clock must have been requested by get_clock previously. |
| 1126 | * |
| 1127 | * Return: 0 if all went well, else returns appropriate error value. |
| 1128 | */ |
| 1129 | static int ti_sci_cmd_put_clock(const struct ti_sci_handle *handle, |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1130 | u32 dev_id, u32 clk_id) |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1131 | { |
Tero Kristo | 71b6108 | 2020-09-11 21:47:08 -0700 | [diff] [blame] | 1132 | return ti_sci_set_clock_state(handle, dev_id, clk_id, |
| 1133 | MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE, |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1134 | MSG_CLOCK_SW_STATE_AUTO); |
| 1135 | } |
| 1136 | |
| 1137 | /** |
| 1138 | * ti_sci_cmd_clk_is_auto() - Is the clock being auto managed |
| 1139 | * @handle: pointer to TI SCI handle |
| 1140 | * @dev_id: Device identifier this request is for |
| 1141 | * @clk_id: Clock identifier for the device for this request. |
| 1142 | * Each device has it's own set of clock inputs. This indexes |
| 1143 | * which clock input to modify. |
| 1144 | * @req_state: state indicating if the clock is auto managed |
| 1145 | * |
| 1146 | * Return: 0 if all went well, else returns appropriate error value. |
| 1147 | */ |
| 1148 | static int ti_sci_cmd_clk_is_auto(const struct ti_sci_handle *handle, |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1149 | u32 dev_id, u32 clk_id, bool *req_state) |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1150 | { |
| 1151 | u8 state = 0; |
| 1152 | int ret; |
| 1153 | |
| 1154 | if (!req_state) |
| 1155 | return -EINVAL; |
| 1156 | |
| 1157 | ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id, &state, NULL); |
| 1158 | if (ret) |
| 1159 | return ret; |
| 1160 | |
| 1161 | *req_state = (state == MSG_CLOCK_SW_STATE_AUTO); |
| 1162 | return 0; |
| 1163 | } |
| 1164 | |
| 1165 | /** |
| 1166 | * ti_sci_cmd_clk_is_on() - Is the clock ON |
| 1167 | * @handle: pointer to TI SCI handle |
| 1168 | * @dev_id: Device identifier this request is for |
| 1169 | * @clk_id: Clock identifier for the device for this request. |
| 1170 | * Each device has it's own set of clock inputs. This indexes |
| 1171 | * which clock input to modify. |
| 1172 | * @req_state: state indicating if the clock is managed by us and enabled |
| 1173 | * @curr_state: state indicating if the clock is ready for operation |
| 1174 | * |
| 1175 | * Return: 0 if all went well, else returns appropriate error value. |
| 1176 | */ |
| 1177 | static int ti_sci_cmd_clk_is_on(const struct ti_sci_handle *handle, u32 dev_id, |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1178 | u32 clk_id, bool *req_state, bool *curr_state) |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1179 | { |
| 1180 | u8 c_state = 0, r_state = 0; |
| 1181 | int ret; |
| 1182 | |
| 1183 | if (!req_state && !curr_state) |
| 1184 | return -EINVAL; |
| 1185 | |
| 1186 | ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id, |
| 1187 | &r_state, &c_state); |
| 1188 | if (ret) |
| 1189 | return ret; |
| 1190 | |
| 1191 | if (req_state) |
| 1192 | *req_state = (r_state == MSG_CLOCK_SW_STATE_REQ); |
| 1193 | if (curr_state) |
| 1194 | *curr_state = (c_state == MSG_CLOCK_HW_STATE_READY); |
| 1195 | return 0; |
| 1196 | } |
| 1197 | |
| 1198 | /** |
| 1199 | * ti_sci_cmd_clk_is_off() - Is the clock OFF |
| 1200 | * @handle: pointer to TI SCI handle |
| 1201 | * @dev_id: Device identifier this request is for |
| 1202 | * @clk_id: Clock identifier for the device for this request. |
| 1203 | * Each device has it's own set of clock inputs. This indexes |
| 1204 | * which clock input to modify. |
| 1205 | * @req_state: state indicating if the clock is managed by us and disabled |
| 1206 | * @curr_state: state indicating if the clock is NOT ready for operation |
| 1207 | * |
| 1208 | * Return: 0 if all went well, else returns appropriate error value. |
| 1209 | */ |
| 1210 | static int ti_sci_cmd_clk_is_off(const struct ti_sci_handle *handle, u32 dev_id, |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1211 | u32 clk_id, bool *req_state, bool *curr_state) |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1212 | { |
| 1213 | u8 c_state = 0, r_state = 0; |
| 1214 | int ret; |
| 1215 | |
| 1216 | if (!req_state && !curr_state) |
| 1217 | return -EINVAL; |
| 1218 | |
| 1219 | ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id, |
| 1220 | &r_state, &c_state); |
| 1221 | if (ret) |
| 1222 | return ret; |
| 1223 | |
| 1224 | if (req_state) |
| 1225 | *req_state = (r_state == MSG_CLOCK_SW_STATE_UNREQ); |
| 1226 | if (curr_state) |
| 1227 | *curr_state = (c_state == MSG_CLOCK_HW_STATE_NOT_READY); |
| 1228 | return 0; |
| 1229 | } |
| 1230 | |
| 1231 | /** |
| 1232 | * ti_sci_cmd_clk_set_parent() - Set the clock source of a specific device clock |
| 1233 | * @handle: pointer to TI SCI handle |
| 1234 | * @dev_id: Device identifier this request is for |
| 1235 | * @clk_id: Clock identifier for the device for this request. |
| 1236 | * Each device has it's own set of clock inputs. This indexes |
| 1237 | * which clock input to modify. |
| 1238 | * @parent_id: Parent clock identifier to set |
| 1239 | * |
| 1240 | * Return: 0 if all went well, else returns appropriate error value. |
| 1241 | */ |
| 1242 | static int ti_sci_cmd_clk_set_parent(const struct ti_sci_handle *handle, |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1243 | u32 dev_id, u32 clk_id, u32 parent_id) |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1244 | { |
| 1245 | struct ti_sci_info *info; |
| 1246 | struct ti_sci_msg_req_set_clock_parent *req; |
| 1247 | struct ti_sci_msg_hdr *resp; |
| 1248 | struct ti_sci_xfer *xfer; |
| 1249 | struct device *dev; |
| 1250 | int ret = 0; |
| 1251 | |
| 1252 | if (IS_ERR(handle)) |
| 1253 | return PTR_ERR(handle); |
| 1254 | if (!handle) |
| 1255 | return -EINVAL; |
| 1256 | |
| 1257 | info = handle_to_ti_sci_info(handle); |
| 1258 | dev = info->dev; |
| 1259 | |
| 1260 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CLOCK_PARENT, |
| 1261 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1262 | sizeof(*req), sizeof(*resp)); |
| 1263 | if (IS_ERR(xfer)) { |
| 1264 | ret = PTR_ERR(xfer); |
| 1265 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 1266 | return ret; |
| 1267 | } |
| 1268 | req = (struct ti_sci_msg_req_set_clock_parent *)xfer->xfer_buf; |
| 1269 | req->dev_id = dev_id; |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1270 | if (clk_id < 255) { |
| 1271 | req->clk_id = clk_id; |
| 1272 | } else { |
| 1273 | req->clk_id = 255; |
| 1274 | req->clk_id_32 = clk_id; |
| 1275 | } |
| 1276 | if (parent_id < 255) { |
| 1277 | req->parent_id = parent_id; |
| 1278 | } else { |
| 1279 | req->parent_id = 255; |
| 1280 | req->parent_id_32 = parent_id; |
| 1281 | } |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1282 | |
| 1283 | ret = ti_sci_do_xfer(info, xfer); |
| 1284 | if (ret) { |
| 1285 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 1286 | goto fail; |
| 1287 | } |
| 1288 | |
| 1289 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; |
| 1290 | |
| 1291 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; |
| 1292 | |
| 1293 | fail: |
| 1294 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 1295 | |
| 1296 | return ret; |
| 1297 | } |
| 1298 | |
| 1299 | /** |
| 1300 | * ti_sci_cmd_clk_get_parent() - Get current parent clock source |
| 1301 | * @handle: pointer to TI SCI handle |
| 1302 | * @dev_id: Device identifier this request is for |
| 1303 | * @clk_id: Clock identifier for the device for this request. |
| 1304 | * Each device has it's own set of clock inputs. This indexes |
| 1305 | * which clock input to modify. |
| 1306 | * @parent_id: Current clock parent |
| 1307 | * |
| 1308 | * Return: 0 if all went well, else returns appropriate error value. |
| 1309 | */ |
| 1310 | static int ti_sci_cmd_clk_get_parent(const struct ti_sci_handle *handle, |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1311 | u32 dev_id, u32 clk_id, u32 *parent_id) |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1312 | { |
| 1313 | struct ti_sci_info *info; |
| 1314 | struct ti_sci_msg_req_get_clock_parent *req; |
| 1315 | struct ti_sci_msg_resp_get_clock_parent *resp; |
| 1316 | struct ti_sci_xfer *xfer; |
| 1317 | struct device *dev; |
| 1318 | int ret = 0; |
| 1319 | |
| 1320 | if (IS_ERR(handle)) |
| 1321 | return PTR_ERR(handle); |
| 1322 | if (!handle || !parent_id) |
| 1323 | return -EINVAL; |
| 1324 | |
| 1325 | info = handle_to_ti_sci_info(handle); |
| 1326 | dev = info->dev; |
| 1327 | |
| 1328 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_CLOCK_PARENT, |
| 1329 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1330 | sizeof(*req), sizeof(*resp)); |
| 1331 | if (IS_ERR(xfer)) { |
| 1332 | ret = PTR_ERR(xfer); |
| 1333 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 1334 | return ret; |
| 1335 | } |
| 1336 | req = (struct ti_sci_msg_req_get_clock_parent *)xfer->xfer_buf; |
| 1337 | req->dev_id = dev_id; |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1338 | if (clk_id < 255) { |
| 1339 | req->clk_id = clk_id; |
| 1340 | } else { |
| 1341 | req->clk_id = 255; |
| 1342 | req->clk_id_32 = clk_id; |
| 1343 | } |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1344 | |
| 1345 | ret = ti_sci_do_xfer(info, xfer); |
| 1346 | if (ret) { |
| 1347 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 1348 | goto fail; |
| 1349 | } |
| 1350 | |
| 1351 | resp = (struct ti_sci_msg_resp_get_clock_parent *)xfer->xfer_buf; |
| 1352 | |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1353 | if (!ti_sci_is_response_ack(resp)) { |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1354 | ret = -ENODEV; |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1355 | } else { |
| 1356 | if (resp->parent_id < 255) |
| 1357 | *parent_id = resp->parent_id; |
| 1358 | else |
| 1359 | *parent_id = resp->parent_id_32; |
| 1360 | } |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1361 | |
| 1362 | fail: |
| 1363 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 1364 | |
| 1365 | return ret; |
| 1366 | } |
| 1367 | |
| 1368 | /** |
| 1369 | * ti_sci_cmd_clk_get_num_parents() - Get num parents of the current clk source |
| 1370 | * @handle: pointer to TI SCI handle |
| 1371 | * @dev_id: Device identifier this request is for |
| 1372 | * @clk_id: Clock identifier for the device for this request. |
| 1373 | * Each device has it's own set of clock inputs. This indexes |
| 1374 | * which clock input to modify. |
| 1375 | * @num_parents: Returns he number of parents to the current clock. |
| 1376 | * |
| 1377 | * Return: 0 if all went well, else returns appropriate error value. |
| 1378 | */ |
| 1379 | static int ti_sci_cmd_clk_get_num_parents(const struct ti_sci_handle *handle, |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1380 | u32 dev_id, u32 clk_id, |
| 1381 | u32 *num_parents) |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1382 | { |
| 1383 | struct ti_sci_info *info; |
| 1384 | struct ti_sci_msg_req_get_clock_num_parents *req; |
| 1385 | struct ti_sci_msg_resp_get_clock_num_parents *resp; |
| 1386 | struct ti_sci_xfer *xfer; |
| 1387 | struct device *dev; |
| 1388 | int ret = 0; |
| 1389 | |
| 1390 | if (IS_ERR(handle)) |
| 1391 | return PTR_ERR(handle); |
| 1392 | if (!handle || !num_parents) |
| 1393 | return -EINVAL; |
| 1394 | |
| 1395 | info = handle_to_ti_sci_info(handle); |
| 1396 | dev = info->dev; |
| 1397 | |
| 1398 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_NUM_CLOCK_PARENTS, |
| 1399 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1400 | sizeof(*req), sizeof(*resp)); |
| 1401 | if (IS_ERR(xfer)) { |
| 1402 | ret = PTR_ERR(xfer); |
| 1403 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 1404 | return ret; |
| 1405 | } |
| 1406 | req = (struct ti_sci_msg_req_get_clock_num_parents *)xfer->xfer_buf; |
| 1407 | req->dev_id = dev_id; |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1408 | if (clk_id < 255) { |
| 1409 | req->clk_id = clk_id; |
| 1410 | } else { |
| 1411 | req->clk_id = 255; |
| 1412 | req->clk_id_32 = clk_id; |
| 1413 | } |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1414 | |
| 1415 | ret = ti_sci_do_xfer(info, xfer); |
| 1416 | if (ret) { |
| 1417 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 1418 | goto fail; |
| 1419 | } |
| 1420 | |
| 1421 | resp = (struct ti_sci_msg_resp_get_clock_num_parents *)xfer->xfer_buf; |
| 1422 | |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1423 | if (!ti_sci_is_response_ack(resp)) { |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1424 | ret = -ENODEV; |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1425 | } else { |
| 1426 | if (resp->num_parents < 255) |
| 1427 | *num_parents = resp->num_parents; |
| 1428 | else |
| 1429 | *num_parents = resp->num_parents_32; |
| 1430 | } |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1431 | |
| 1432 | fail: |
| 1433 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 1434 | |
| 1435 | return ret; |
| 1436 | } |
| 1437 | |
| 1438 | /** |
| 1439 | * ti_sci_cmd_clk_get_match_freq() - Find a good match for frequency |
| 1440 | * @handle: pointer to TI SCI handle |
| 1441 | * @dev_id: Device identifier this request is for |
| 1442 | * @clk_id: Clock identifier for the device for this request. |
| 1443 | * Each device has it's own set of clock inputs. This indexes |
| 1444 | * which clock input to modify. |
| 1445 | * @min_freq: The minimum allowable frequency in Hz. This is the minimum |
| 1446 | * allowable programmed frequency and does not account for clock |
| 1447 | * tolerances and jitter. |
| 1448 | * @target_freq: The target clock frequency in Hz. A frequency will be |
| 1449 | * processed as close to this target frequency as possible. |
| 1450 | * @max_freq: The maximum allowable frequency in Hz. This is the maximum |
| 1451 | * allowable programmed frequency and does not account for clock |
| 1452 | * tolerances and jitter. |
| 1453 | * @match_freq: Frequency match in Hz response. |
| 1454 | * |
| 1455 | * Return: 0 if all went well, else returns appropriate error value. |
| 1456 | */ |
| 1457 | static int ti_sci_cmd_clk_get_match_freq(const struct ti_sci_handle *handle, |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1458 | u32 dev_id, u32 clk_id, u64 min_freq, |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1459 | u64 target_freq, u64 max_freq, |
| 1460 | u64 *match_freq) |
| 1461 | { |
| 1462 | struct ti_sci_info *info; |
| 1463 | struct ti_sci_msg_req_query_clock_freq *req; |
| 1464 | struct ti_sci_msg_resp_query_clock_freq *resp; |
| 1465 | struct ti_sci_xfer *xfer; |
| 1466 | struct device *dev; |
| 1467 | int ret = 0; |
| 1468 | |
| 1469 | if (IS_ERR(handle)) |
| 1470 | return PTR_ERR(handle); |
| 1471 | if (!handle || !match_freq) |
| 1472 | return -EINVAL; |
| 1473 | |
| 1474 | info = handle_to_ti_sci_info(handle); |
| 1475 | dev = info->dev; |
| 1476 | |
| 1477 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_QUERY_CLOCK_FREQ, |
| 1478 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1479 | sizeof(*req), sizeof(*resp)); |
| 1480 | if (IS_ERR(xfer)) { |
| 1481 | ret = PTR_ERR(xfer); |
| 1482 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 1483 | return ret; |
| 1484 | } |
| 1485 | req = (struct ti_sci_msg_req_query_clock_freq *)xfer->xfer_buf; |
| 1486 | req->dev_id = dev_id; |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1487 | if (clk_id < 255) { |
| 1488 | req->clk_id = clk_id; |
| 1489 | } else { |
| 1490 | req->clk_id = 255; |
| 1491 | req->clk_id_32 = clk_id; |
| 1492 | } |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1493 | req->min_freq_hz = min_freq; |
| 1494 | req->target_freq_hz = target_freq; |
| 1495 | req->max_freq_hz = max_freq; |
| 1496 | |
| 1497 | ret = ti_sci_do_xfer(info, xfer); |
| 1498 | if (ret) { |
| 1499 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 1500 | goto fail; |
| 1501 | } |
| 1502 | |
| 1503 | resp = (struct ti_sci_msg_resp_query_clock_freq *)xfer->xfer_buf; |
| 1504 | |
| 1505 | if (!ti_sci_is_response_ack(resp)) |
| 1506 | ret = -ENODEV; |
| 1507 | else |
| 1508 | *match_freq = resp->freq_hz; |
| 1509 | |
| 1510 | fail: |
| 1511 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 1512 | |
| 1513 | return ret; |
| 1514 | } |
| 1515 | |
| 1516 | /** |
| 1517 | * ti_sci_cmd_clk_set_freq() - Set a frequency for clock |
| 1518 | * @handle: pointer to TI SCI handle |
| 1519 | * @dev_id: Device identifier this request is for |
| 1520 | * @clk_id: Clock identifier for the device for this request. |
| 1521 | * Each device has it's own set of clock inputs. This indexes |
| 1522 | * which clock input to modify. |
| 1523 | * @min_freq: The minimum allowable frequency in Hz. This is the minimum |
| 1524 | * allowable programmed frequency and does not account for clock |
| 1525 | * tolerances and jitter. |
| 1526 | * @target_freq: The target clock frequency in Hz. A frequency will be |
| 1527 | * processed as close to this target frequency as possible. |
| 1528 | * @max_freq: The maximum allowable frequency in Hz. This is the maximum |
| 1529 | * allowable programmed frequency and does not account for clock |
| 1530 | * tolerances and jitter. |
| 1531 | * |
| 1532 | * Return: 0 if all went well, else returns appropriate error value. |
| 1533 | */ |
| 1534 | static int ti_sci_cmd_clk_set_freq(const struct ti_sci_handle *handle, |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1535 | u32 dev_id, u32 clk_id, u64 min_freq, |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1536 | u64 target_freq, u64 max_freq) |
| 1537 | { |
| 1538 | struct ti_sci_info *info; |
| 1539 | struct ti_sci_msg_req_set_clock_freq *req; |
| 1540 | struct ti_sci_msg_hdr *resp; |
| 1541 | struct ti_sci_xfer *xfer; |
| 1542 | struct device *dev; |
| 1543 | int ret = 0; |
| 1544 | |
| 1545 | if (IS_ERR(handle)) |
| 1546 | return PTR_ERR(handle); |
| 1547 | if (!handle) |
| 1548 | return -EINVAL; |
| 1549 | |
| 1550 | info = handle_to_ti_sci_info(handle); |
| 1551 | dev = info->dev; |
| 1552 | |
| 1553 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CLOCK_FREQ, |
| 1554 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1555 | sizeof(*req), sizeof(*resp)); |
| 1556 | if (IS_ERR(xfer)) { |
| 1557 | ret = PTR_ERR(xfer); |
| 1558 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 1559 | return ret; |
| 1560 | } |
| 1561 | req = (struct ti_sci_msg_req_set_clock_freq *)xfer->xfer_buf; |
| 1562 | req->dev_id = dev_id; |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1563 | if (clk_id < 255) { |
| 1564 | req->clk_id = clk_id; |
| 1565 | } else { |
| 1566 | req->clk_id = 255; |
| 1567 | req->clk_id_32 = clk_id; |
| 1568 | } |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1569 | req->min_freq_hz = min_freq; |
| 1570 | req->target_freq_hz = target_freq; |
| 1571 | req->max_freq_hz = max_freq; |
| 1572 | |
| 1573 | ret = ti_sci_do_xfer(info, xfer); |
| 1574 | if (ret) { |
| 1575 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 1576 | goto fail; |
| 1577 | } |
| 1578 | |
| 1579 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; |
| 1580 | |
| 1581 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; |
| 1582 | |
| 1583 | fail: |
| 1584 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 1585 | |
| 1586 | return ret; |
| 1587 | } |
| 1588 | |
| 1589 | /** |
| 1590 | * ti_sci_cmd_clk_get_freq() - Get current frequency |
| 1591 | * @handle: pointer to TI SCI handle |
| 1592 | * @dev_id: Device identifier this request is for |
| 1593 | * @clk_id: Clock identifier for the device for this request. |
| 1594 | * Each device has it's own set of clock inputs. This indexes |
| 1595 | * which clock input to modify. |
| 1596 | * @freq: Currently frequency in Hz |
| 1597 | * |
| 1598 | * Return: 0 if all went well, else returns appropriate error value. |
| 1599 | */ |
| 1600 | static int ti_sci_cmd_clk_get_freq(const struct ti_sci_handle *handle, |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1601 | u32 dev_id, u32 clk_id, u64 *freq) |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1602 | { |
| 1603 | struct ti_sci_info *info; |
| 1604 | struct ti_sci_msg_req_get_clock_freq *req; |
| 1605 | struct ti_sci_msg_resp_get_clock_freq *resp; |
| 1606 | struct ti_sci_xfer *xfer; |
| 1607 | struct device *dev; |
| 1608 | int ret = 0; |
| 1609 | |
| 1610 | if (IS_ERR(handle)) |
| 1611 | return PTR_ERR(handle); |
| 1612 | if (!handle || !freq) |
| 1613 | return -EINVAL; |
| 1614 | |
| 1615 | info = handle_to_ti_sci_info(handle); |
| 1616 | dev = info->dev; |
| 1617 | |
| 1618 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_CLOCK_FREQ, |
| 1619 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1620 | sizeof(*req), sizeof(*resp)); |
| 1621 | if (IS_ERR(xfer)) { |
| 1622 | ret = PTR_ERR(xfer); |
| 1623 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 1624 | return ret; |
| 1625 | } |
| 1626 | req = (struct ti_sci_msg_req_get_clock_freq *)xfer->xfer_buf; |
| 1627 | req->dev_id = dev_id; |
Tero Kristo | 81f4458 | 2019-05-28 16:10:24 +0300 | [diff] [blame] | 1628 | if (clk_id < 255) { |
| 1629 | req->clk_id = clk_id; |
| 1630 | } else { |
| 1631 | req->clk_id = 255; |
| 1632 | req->clk_id_32 = clk_id; |
| 1633 | } |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 1634 | |
| 1635 | ret = ti_sci_do_xfer(info, xfer); |
| 1636 | if (ret) { |
| 1637 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 1638 | goto fail; |
| 1639 | } |
| 1640 | |
| 1641 | resp = (struct ti_sci_msg_resp_get_clock_freq *)xfer->xfer_buf; |
| 1642 | |
| 1643 | if (!ti_sci_is_response_ack(resp)) |
| 1644 | ret = -ENODEV; |
| 1645 | else |
| 1646 | *freq = resp->freq_hz; |
| 1647 | |
| 1648 | fail: |
| 1649 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 1650 | |
| 1651 | return ret; |
| 1652 | } |
| 1653 | |
Nishanth Menon | 912cffb | 2016-10-18 18:08:37 -0500 | [diff] [blame] | 1654 | static int ti_sci_cmd_core_reboot(const struct ti_sci_handle *handle) |
| 1655 | { |
| 1656 | struct ti_sci_info *info; |
| 1657 | struct ti_sci_msg_req_reboot *req; |
| 1658 | struct ti_sci_msg_hdr *resp; |
| 1659 | struct ti_sci_xfer *xfer; |
| 1660 | struct device *dev; |
| 1661 | int ret = 0; |
| 1662 | |
| 1663 | if (IS_ERR(handle)) |
| 1664 | return PTR_ERR(handle); |
| 1665 | if (!handle) |
| 1666 | return -EINVAL; |
| 1667 | |
| 1668 | info = handle_to_ti_sci_info(handle); |
| 1669 | dev = info->dev; |
| 1670 | |
| 1671 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SYS_RESET, |
| 1672 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1673 | sizeof(*req), sizeof(*resp)); |
| 1674 | if (IS_ERR(xfer)) { |
| 1675 | ret = PTR_ERR(xfer); |
| 1676 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 1677 | return ret; |
| 1678 | } |
| 1679 | req = (struct ti_sci_msg_req_reboot *)xfer->xfer_buf; |
| 1680 | |
| 1681 | ret = ti_sci_do_xfer(info, xfer); |
| 1682 | if (ret) { |
| 1683 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 1684 | goto fail; |
| 1685 | } |
| 1686 | |
| 1687 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; |
| 1688 | |
| 1689 | if (!ti_sci_is_response_ack(resp)) |
| 1690 | ret = -ENODEV; |
| 1691 | else |
| 1692 | ret = 0; |
| 1693 | |
| 1694 | fail: |
| 1695 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 1696 | |
| 1697 | return ret; |
| 1698 | } |
| 1699 | |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 1700 | /** |
| 1701 | * ti_sci_get_resource_range - Helper to get a range of resources assigned |
| 1702 | * to a host. Resource is uniquely identified by |
| 1703 | * type and subtype. |
| 1704 | * @handle: Pointer to TISCI handle. |
| 1705 | * @dev_id: TISCI device ID. |
| 1706 | * @subtype: Resource assignment subtype that is being requested |
| 1707 | * from the given device. |
| 1708 | * @s_host: Host processor ID to which the resources are allocated |
Peter Ujfalusi | 967a020 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 1709 | * @desc: Pointer to ti_sci_resource_desc to be updated with the |
| 1710 | * resource range start index and number of resources |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 1711 | * |
| 1712 | * Return: 0 if all went fine, else return appropriate error. |
| 1713 | */ |
| 1714 | static int ti_sci_get_resource_range(const struct ti_sci_handle *handle, |
| 1715 | u32 dev_id, u8 subtype, u8 s_host, |
Peter Ujfalusi | 967a020 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 1716 | struct ti_sci_resource_desc *desc) |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 1717 | { |
| 1718 | struct ti_sci_msg_resp_get_resource_range *resp; |
| 1719 | struct ti_sci_msg_req_get_resource_range *req; |
| 1720 | struct ti_sci_xfer *xfer; |
| 1721 | struct ti_sci_info *info; |
| 1722 | struct device *dev; |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 1723 | int ret = 0; |
| 1724 | |
| 1725 | if (IS_ERR(handle)) |
| 1726 | return PTR_ERR(handle); |
Peter Ujfalusi | 967a020 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 1727 | if (!handle || !desc) |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 1728 | return -EINVAL; |
| 1729 | |
| 1730 | info = handle_to_ti_sci_info(handle); |
| 1731 | dev = info->dev; |
| 1732 | |
| 1733 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_RESOURCE_RANGE, |
| 1734 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1735 | sizeof(*req), sizeof(*resp)); |
| 1736 | if (IS_ERR(xfer)) { |
| 1737 | ret = PTR_ERR(xfer); |
| 1738 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 1739 | return ret; |
| 1740 | } |
| 1741 | |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 1742 | req = (struct ti_sci_msg_req_get_resource_range *)xfer->xfer_buf; |
| 1743 | req->secondary_host = s_host; |
Lokesh Vutla | 9b98e02 | 2020-08-06 13:18:15 +0530 | [diff] [blame] | 1744 | req->type = dev_id & MSG_RM_RESOURCE_TYPE_MASK; |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 1745 | req->subtype = subtype & MSG_RM_RESOURCE_SUBTYPE_MASK; |
| 1746 | |
| 1747 | ret = ti_sci_do_xfer(info, xfer); |
| 1748 | if (ret) { |
| 1749 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 1750 | goto fail; |
| 1751 | } |
| 1752 | |
| 1753 | resp = (struct ti_sci_msg_resp_get_resource_range *)xfer->xfer_buf; |
| 1754 | |
| 1755 | if (!ti_sci_is_response_ack(resp)) { |
| 1756 | ret = -ENODEV; |
Peter Ujfalusi | 519c5c0 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 1757 | } else if (!resp->range_num && !resp->range_num_sec) { |
| 1758 | /* Neither of the two resource range is valid */ |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 1759 | ret = -ENODEV; |
| 1760 | } else { |
Peter Ujfalusi | 967a020 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 1761 | desc->start = resp->range_start; |
| 1762 | desc->num = resp->range_num; |
Peter Ujfalusi | 519c5c0 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 1763 | desc->start_sec = resp->range_start_sec; |
| 1764 | desc->num_sec = resp->range_num_sec; |
Jason Wang | 7c1c1d3 | 2021-11-14 13:53:33 +0800 | [diff] [blame] | 1765 | } |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 1766 | |
| 1767 | fail: |
| 1768 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 1769 | |
| 1770 | return ret; |
| 1771 | } |
| 1772 | |
| 1773 | /** |
| 1774 | * ti_sci_cmd_get_resource_range - Get a range of resources assigned to host |
| 1775 | * that is same as ti sci interface host. |
| 1776 | * @handle: Pointer to TISCI handle. |
| 1777 | * @dev_id: TISCI device ID. |
| 1778 | * @subtype: Resource assignment subtype that is being requested |
| 1779 | * from the given device. |
Peter Ujfalusi | 967a020 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 1780 | * @desc: Pointer to ti_sci_resource_desc to be updated with the |
| 1781 | * resource range start index and number of resources |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 1782 | * |
| 1783 | * Return: 0 if all went fine, else return appropriate error. |
| 1784 | */ |
| 1785 | static int ti_sci_cmd_get_resource_range(const struct ti_sci_handle *handle, |
| 1786 | u32 dev_id, u8 subtype, |
Peter Ujfalusi | 967a020 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 1787 | struct ti_sci_resource_desc *desc) |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 1788 | { |
| 1789 | return ti_sci_get_resource_range(handle, dev_id, subtype, |
| 1790 | TI_SCI_IRQ_SECONDARY_HOST_INVALID, |
Peter Ujfalusi | 967a020 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 1791 | desc); |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 1792 | } |
| 1793 | |
| 1794 | /** |
| 1795 | * ti_sci_cmd_get_resource_range_from_shost - Get a range of resources |
| 1796 | * assigned to a specified host. |
| 1797 | * @handle: Pointer to TISCI handle. |
| 1798 | * @dev_id: TISCI device ID. |
| 1799 | * @subtype: Resource assignment subtype that is being requested |
| 1800 | * from the given device. |
| 1801 | * @s_host: Host processor ID to which the resources are allocated |
Peter Ujfalusi | 967a020 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 1802 | * @desc: Pointer to ti_sci_resource_desc to be updated with the |
| 1803 | * resource range start index and number of resources |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 1804 | * |
| 1805 | * Return: 0 if all went fine, else return appropriate error. |
| 1806 | */ |
| 1807 | static |
| 1808 | int ti_sci_cmd_get_resource_range_from_shost(const struct ti_sci_handle *handle, |
| 1809 | u32 dev_id, u8 subtype, u8 s_host, |
Peter Ujfalusi | 967a020 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 1810 | struct ti_sci_resource_desc *desc) |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 1811 | { |
Peter Ujfalusi | 967a020 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 1812 | return ti_sci_get_resource_range(handle, dev_id, subtype, s_host, desc); |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 1813 | } |
| 1814 | |
Lokesh Vutla | 997b001 | 2019-04-30 15:42:19 +0530 | [diff] [blame] | 1815 | /** |
| 1816 | * ti_sci_manage_irq() - Helper api to configure/release the irq route between |
| 1817 | * the requested source and destination |
| 1818 | * @handle: Pointer to TISCI handle. |
| 1819 | * @valid_params: Bit fields defining the validity of certain params |
| 1820 | * @src_id: Device ID of the IRQ source |
| 1821 | * @src_index: IRQ source index within the source device |
| 1822 | * @dst_id: Device ID of the IRQ destination |
| 1823 | * @dst_host_irq: IRQ number of the destination device |
| 1824 | * @ia_id: Device ID of the IA, if the IRQ flows through this IA |
| 1825 | * @vint: Virtual interrupt to be used within the IA |
| 1826 | * @global_event: Global event number to be used for the requesting event |
| 1827 | * @vint_status_bit: Virtual interrupt status bit to be used for the event |
| 1828 | * @s_host: Secondary host ID to which the irq/event is being |
| 1829 | * requested for. |
| 1830 | * @type: Request type irq set or release. |
| 1831 | * |
| 1832 | * Return: 0 if all went fine, else return appropriate error. |
| 1833 | */ |
| 1834 | static int ti_sci_manage_irq(const struct ti_sci_handle *handle, |
| 1835 | u32 valid_params, u16 src_id, u16 src_index, |
| 1836 | u16 dst_id, u16 dst_host_irq, u16 ia_id, u16 vint, |
| 1837 | u16 global_event, u8 vint_status_bit, u8 s_host, |
| 1838 | u16 type) |
| 1839 | { |
| 1840 | struct ti_sci_msg_req_manage_irq *req; |
| 1841 | struct ti_sci_msg_hdr *resp; |
| 1842 | struct ti_sci_xfer *xfer; |
| 1843 | struct ti_sci_info *info; |
| 1844 | struct device *dev; |
| 1845 | int ret = 0; |
| 1846 | |
| 1847 | if (IS_ERR(handle)) |
| 1848 | return PTR_ERR(handle); |
| 1849 | if (!handle) |
| 1850 | return -EINVAL; |
| 1851 | |
| 1852 | info = handle_to_ti_sci_info(handle); |
| 1853 | dev = info->dev; |
| 1854 | |
| 1855 | xfer = ti_sci_get_one_xfer(info, type, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 1856 | sizeof(*req), sizeof(*resp)); |
| 1857 | if (IS_ERR(xfer)) { |
| 1858 | ret = PTR_ERR(xfer); |
| 1859 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 1860 | return ret; |
| 1861 | } |
| 1862 | req = (struct ti_sci_msg_req_manage_irq *)xfer->xfer_buf; |
| 1863 | req->valid_params = valid_params; |
| 1864 | req->src_id = src_id; |
| 1865 | req->src_index = src_index; |
| 1866 | req->dst_id = dst_id; |
| 1867 | req->dst_host_irq = dst_host_irq; |
| 1868 | req->ia_id = ia_id; |
| 1869 | req->vint = vint; |
| 1870 | req->global_event = global_event; |
| 1871 | req->vint_status_bit = vint_status_bit; |
| 1872 | req->secondary_host = s_host; |
| 1873 | |
| 1874 | ret = ti_sci_do_xfer(info, xfer); |
| 1875 | if (ret) { |
| 1876 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 1877 | goto fail; |
| 1878 | } |
| 1879 | |
| 1880 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; |
| 1881 | |
| 1882 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; |
| 1883 | |
| 1884 | fail: |
| 1885 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 1886 | |
| 1887 | return ret; |
| 1888 | } |
| 1889 | |
| 1890 | /** |
| 1891 | * ti_sci_set_irq() - Helper api to configure the irq route between the |
| 1892 | * requested source and destination |
| 1893 | * @handle: Pointer to TISCI handle. |
| 1894 | * @valid_params: Bit fields defining the validity of certain params |
| 1895 | * @src_id: Device ID of the IRQ source |
| 1896 | * @src_index: IRQ source index within the source device |
| 1897 | * @dst_id: Device ID of the IRQ destination |
| 1898 | * @dst_host_irq: IRQ number of the destination device |
| 1899 | * @ia_id: Device ID of the IA, if the IRQ flows through this IA |
| 1900 | * @vint: Virtual interrupt to be used within the IA |
| 1901 | * @global_event: Global event number to be used for the requesting event |
| 1902 | * @vint_status_bit: Virtual interrupt status bit to be used for the event |
| 1903 | * @s_host: Secondary host ID to which the irq/event is being |
| 1904 | * requested for. |
| 1905 | * |
| 1906 | * Return: 0 if all went fine, else return appropriate error. |
| 1907 | */ |
| 1908 | static int ti_sci_set_irq(const struct ti_sci_handle *handle, u32 valid_params, |
| 1909 | u16 src_id, u16 src_index, u16 dst_id, |
| 1910 | u16 dst_host_irq, u16 ia_id, u16 vint, |
| 1911 | u16 global_event, u8 vint_status_bit, u8 s_host) |
| 1912 | { |
| 1913 | 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", |
| 1914 | __func__, valid_params, src_id, src_index, |
| 1915 | dst_id, dst_host_irq, ia_id, vint, global_event, |
| 1916 | vint_status_bit); |
| 1917 | |
| 1918 | return ti_sci_manage_irq(handle, valid_params, src_id, src_index, |
| 1919 | dst_id, dst_host_irq, ia_id, vint, |
| 1920 | global_event, vint_status_bit, s_host, |
| 1921 | TI_SCI_MSG_SET_IRQ); |
| 1922 | } |
| 1923 | |
| 1924 | /** |
| 1925 | * ti_sci_free_irq() - Helper api to free the irq route between the |
| 1926 | * requested source and destination |
| 1927 | * @handle: Pointer to TISCI handle. |
| 1928 | * @valid_params: Bit fields defining the validity of certain params |
| 1929 | * @src_id: Device ID of the IRQ source |
| 1930 | * @src_index: IRQ source index within the source device |
| 1931 | * @dst_id: Device ID of the IRQ destination |
| 1932 | * @dst_host_irq: IRQ number of the destination device |
| 1933 | * @ia_id: Device ID of the IA, if the IRQ flows through this IA |
| 1934 | * @vint: Virtual interrupt to be used within the IA |
| 1935 | * @global_event: Global event number to be used for the requesting event |
| 1936 | * @vint_status_bit: Virtual interrupt status bit to be used for the event |
| 1937 | * @s_host: Secondary host ID to which the irq/event is being |
| 1938 | * requested for. |
| 1939 | * |
| 1940 | * Return: 0 if all went fine, else return appropriate error. |
| 1941 | */ |
| 1942 | static int ti_sci_free_irq(const struct ti_sci_handle *handle, u32 valid_params, |
| 1943 | u16 src_id, u16 src_index, u16 dst_id, |
| 1944 | u16 dst_host_irq, u16 ia_id, u16 vint, |
| 1945 | u16 global_event, u8 vint_status_bit, u8 s_host) |
| 1946 | { |
| 1947 | 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", |
| 1948 | __func__, valid_params, src_id, src_index, |
| 1949 | dst_id, dst_host_irq, ia_id, vint, global_event, |
| 1950 | vint_status_bit); |
| 1951 | |
| 1952 | return ti_sci_manage_irq(handle, valid_params, src_id, src_index, |
| 1953 | dst_id, dst_host_irq, ia_id, vint, |
| 1954 | global_event, vint_status_bit, s_host, |
| 1955 | TI_SCI_MSG_FREE_IRQ); |
| 1956 | } |
| 1957 | |
| 1958 | /** |
| 1959 | * ti_sci_cmd_set_irq() - Configure a host irq route between the requested |
| 1960 | * source and destination. |
| 1961 | * @handle: Pointer to TISCI handle. |
| 1962 | * @src_id: Device ID of the IRQ source |
| 1963 | * @src_index: IRQ source index within the source device |
| 1964 | * @dst_id: Device ID of the IRQ destination |
| 1965 | * @dst_host_irq: IRQ number of the destination device |
Lokesh Vutla | 997b001 | 2019-04-30 15:42:19 +0530 | [diff] [blame] | 1966 | * |
| 1967 | * Return: 0 if all went fine, else return appropriate error. |
| 1968 | */ |
| 1969 | static int ti_sci_cmd_set_irq(const struct ti_sci_handle *handle, u16 src_id, |
| 1970 | u16 src_index, u16 dst_id, u16 dst_host_irq) |
| 1971 | { |
| 1972 | u32 valid_params = MSG_FLAG_DST_ID_VALID | MSG_FLAG_DST_HOST_IRQ_VALID; |
| 1973 | |
| 1974 | return ti_sci_set_irq(handle, valid_params, src_id, src_index, dst_id, |
| 1975 | dst_host_irq, 0, 0, 0, 0, 0); |
| 1976 | } |
| 1977 | |
| 1978 | /** |
| 1979 | * ti_sci_cmd_set_event_map() - Configure an event based irq route between the |
| 1980 | * requested source and Interrupt Aggregator. |
| 1981 | * @handle: Pointer to TISCI handle. |
| 1982 | * @src_id: Device ID of the IRQ source |
| 1983 | * @src_index: IRQ source index within the source device |
| 1984 | * @ia_id: Device ID of the IA, if the IRQ flows through this IA |
| 1985 | * @vint: Virtual interrupt to be used within the IA |
| 1986 | * @global_event: Global event number to be used for the requesting event |
| 1987 | * @vint_status_bit: Virtual interrupt status bit to be used for the event |
| 1988 | * |
| 1989 | * Return: 0 if all went fine, else return appropriate error. |
| 1990 | */ |
| 1991 | static int ti_sci_cmd_set_event_map(const struct ti_sci_handle *handle, |
| 1992 | u16 src_id, u16 src_index, u16 ia_id, |
| 1993 | u16 vint, u16 global_event, |
| 1994 | u8 vint_status_bit) |
| 1995 | { |
| 1996 | u32 valid_params = MSG_FLAG_IA_ID_VALID | MSG_FLAG_VINT_VALID | |
| 1997 | MSG_FLAG_GLB_EVNT_VALID | |
| 1998 | MSG_FLAG_VINT_STS_BIT_VALID; |
| 1999 | |
| 2000 | return ti_sci_set_irq(handle, valid_params, src_id, src_index, 0, 0, |
| 2001 | ia_id, vint, global_event, vint_status_bit, 0); |
| 2002 | } |
| 2003 | |
| 2004 | /** |
| 2005 | * ti_sci_cmd_free_irq() - Free a host irq route between the between the |
| 2006 | * requested source and destination. |
| 2007 | * @handle: Pointer to TISCI handle. |
| 2008 | * @src_id: Device ID of the IRQ source |
| 2009 | * @src_index: IRQ source index within the source device |
| 2010 | * @dst_id: Device ID of the IRQ destination |
| 2011 | * @dst_host_irq: IRQ number of the destination device |
Lokesh Vutla | 997b001 | 2019-04-30 15:42:19 +0530 | [diff] [blame] | 2012 | * |
| 2013 | * Return: 0 if all went fine, else return appropriate error. |
| 2014 | */ |
| 2015 | static int ti_sci_cmd_free_irq(const struct ti_sci_handle *handle, u16 src_id, |
| 2016 | u16 src_index, u16 dst_id, u16 dst_host_irq) |
| 2017 | { |
| 2018 | u32 valid_params = MSG_FLAG_DST_ID_VALID | MSG_FLAG_DST_HOST_IRQ_VALID; |
| 2019 | |
| 2020 | return ti_sci_free_irq(handle, valid_params, src_id, src_index, dst_id, |
| 2021 | dst_host_irq, 0, 0, 0, 0, 0); |
| 2022 | } |
| 2023 | |
| 2024 | /** |
| 2025 | * ti_sci_cmd_free_event_map() - Free an event map between the requested source |
| 2026 | * and Interrupt Aggregator. |
| 2027 | * @handle: Pointer to TISCI handle. |
| 2028 | * @src_id: Device ID of the IRQ source |
| 2029 | * @src_index: IRQ source index within the source device |
| 2030 | * @ia_id: Device ID of the IA, if the IRQ flows through this IA |
| 2031 | * @vint: Virtual interrupt to be used within the IA |
| 2032 | * @global_event: Global event number to be used for the requesting event |
| 2033 | * @vint_status_bit: Virtual interrupt status bit to be used for the event |
| 2034 | * |
| 2035 | * Return: 0 if all went fine, else return appropriate error. |
| 2036 | */ |
| 2037 | static int ti_sci_cmd_free_event_map(const struct ti_sci_handle *handle, |
| 2038 | u16 src_id, u16 src_index, u16 ia_id, |
| 2039 | u16 vint, u16 global_event, |
| 2040 | u8 vint_status_bit) |
| 2041 | { |
| 2042 | u32 valid_params = MSG_FLAG_IA_ID_VALID | |
| 2043 | MSG_FLAG_VINT_VALID | MSG_FLAG_GLB_EVNT_VALID | |
| 2044 | MSG_FLAG_VINT_STS_BIT_VALID; |
| 2045 | |
| 2046 | return ti_sci_free_irq(handle, valid_params, src_id, src_index, 0, 0, |
| 2047 | ia_id, vint, global_event, vint_status_bit, 0); |
| 2048 | } |
| 2049 | |
Peter Ujfalusi | 68608b5 | 2019-06-10 12:18:56 +0300 | [diff] [blame] | 2050 | /** |
Peter Ujfalusi | 3c20175 | 2020-10-25 12:10:06 -0700 | [diff] [blame] | 2051 | * ti_sci_cmd_rm_ring_cfg() - Configure a NAVSS ring |
| 2052 | * @handle: Pointer to TI SCI handle. |
| 2053 | * @params: Pointer to ti_sci_msg_rm_ring_cfg ring config structure |
| 2054 | * |
| 2055 | * Return: 0 if all went well, else returns appropriate error value. |
| 2056 | * |
| 2057 | * See @ti_sci_msg_rm_ring_cfg and @ti_sci_msg_rm_ring_cfg_req for |
| 2058 | * more info. |
| 2059 | */ |
| 2060 | static int ti_sci_cmd_rm_ring_cfg(const struct ti_sci_handle *handle, |
| 2061 | const struct ti_sci_msg_rm_ring_cfg *params) |
| 2062 | { |
| 2063 | struct ti_sci_msg_rm_ring_cfg_req *req; |
| 2064 | struct ti_sci_msg_hdr *resp; |
| 2065 | struct ti_sci_xfer *xfer; |
| 2066 | struct ti_sci_info *info; |
| 2067 | struct device *dev; |
| 2068 | int ret = 0; |
| 2069 | |
| 2070 | if (IS_ERR_OR_NULL(handle)) |
| 2071 | return -EINVAL; |
| 2072 | |
| 2073 | info = handle_to_ti_sci_info(handle); |
| 2074 | dev = info->dev; |
| 2075 | |
| 2076 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_RING_CFG, |
| 2077 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 2078 | sizeof(*req), sizeof(*resp)); |
| 2079 | if (IS_ERR(xfer)) { |
| 2080 | ret = PTR_ERR(xfer); |
| 2081 | dev_err(dev, "RM_RA:Message config failed(%d)\n", ret); |
| 2082 | return ret; |
| 2083 | } |
| 2084 | req = (struct ti_sci_msg_rm_ring_cfg_req *)xfer->xfer_buf; |
| 2085 | req->valid_params = params->valid_params; |
| 2086 | req->nav_id = params->nav_id; |
| 2087 | req->index = params->index; |
| 2088 | req->addr_lo = params->addr_lo; |
| 2089 | req->addr_hi = params->addr_hi; |
| 2090 | req->count = params->count; |
| 2091 | req->mode = params->mode; |
| 2092 | req->size = params->size; |
| 2093 | req->order_id = params->order_id; |
| 2094 | req->virtid = params->virtid; |
| 2095 | req->asel = params->asel; |
| 2096 | |
| 2097 | ret = ti_sci_do_xfer(info, xfer); |
| 2098 | if (ret) { |
| 2099 | dev_err(dev, "RM_RA:Mbox config send fail %d\n", ret); |
| 2100 | goto fail; |
| 2101 | } |
| 2102 | |
| 2103 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; |
| 2104 | ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL; |
| 2105 | |
| 2106 | fail: |
| 2107 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 2108 | dev_dbg(dev, "RM_RA:config ring %u ret:%d\n", params->index, ret); |
| 2109 | return ret; |
| 2110 | } |
| 2111 | |
| 2112 | /** |
Peter Ujfalusi | 68608b5 | 2019-06-10 12:18:56 +0300 | [diff] [blame] | 2113 | * ti_sci_cmd_rm_psil_pair() - Pair PSI-L source to destination thread |
| 2114 | * @handle: Pointer to TI SCI handle. |
| 2115 | * @nav_id: Device ID of Navigator Subsystem which should be used for |
| 2116 | * pairing |
| 2117 | * @src_thread: Source PSI-L thread ID |
| 2118 | * @dst_thread: Destination PSI-L thread ID |
| 2119 | * |
| 2120 | * Return: 0 if all went well, else returns appropriate error value. |
| 2121 | */ |
| 2122 | static int ti_sci_cmd_rm_psil_pair(const struct ti_sci_handle *handle, |
| 2123 | u32 nav_id, u32 src_thread, u32 dst_thread) |
| 2124 | { |
| 2125 | struct ti_sci_msg_psil_pair *req; |
| 2126 | struct ti_sci_msg_hdr *resp; |
| 2127 | struct ti_sci_xfer *xfer; |
| 2128 | struct ti_sci_info *info; |
| 2129 | struct device *dev; |
| 2130 | int ret = 0; |
| 2131 | |
| 2132 | if (IS_ERR(handle)) |
| 2133 | return PTR_ERR(handle); |
| 2134 | if (!handle) |
| 2135 | return -EINVAL; |
| 2136 | |
| 2137 | info = handle_to_ti_sci_info(handle); |
| 2138 | dev = info->dev; |
| 2139 | |
| 2140 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_PSIL_PAIR, |
| 2141 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 2142 | sizeof(*req), sizeof(*resp)); |
| 2143 | if (IS_ERR(xfer)) { |
| 2144 | ret = PTR_ERR(xfer); |
| 2145 | dev_err(dev, "RM_PSIL:Message reconfig failed(%d)\n", ret); |
| 2146 | return ret; |
| 2147 | } |
| 2148 | req = (struct ti_sci_msg_psil_pair *)xfer->xfer_buf; |
| 2149 | req->nav_id = nav_id; |
| 2150 | req->src_thread = src_thread; |
| 2151 | req->dst_thread = dst_thread; |
| 2152 | |
| 2153 | ret = ti_sci_do_xfer(info, xfer); |
| 2154 | if (ret) { |
| 2155 | dev_err(dev, "RM_PSIL:Mbox send fail %d\n", ret); |
| 2156 | goto fail; |
| 2157 | } |
| 2158 | |
| 2159 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; |
| 2160 | ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL; |
| 2161 | |
| 2162 | fail: |
| 2163 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 2164 | |
| 2165 | return ret; |
| 2166 | } |
| 2167 | |
| 2168 | /** |
| 2169 | * ti_sci_cmd_rm_psil_unpair() - Unpair PSI-L source from destination thread |
| 2170 | * @handle: Pointer to TI SCI handle. |
| 2171 | * @nav_id: Device ID of Navigator Subsystem which should be used for |
| 2172 | * unpairing |
| 2173 | * @src_thread: Source PSI-L thread ID |
| 2174 | * @dst_thread: Destination PSI-L thread ID |
| 2175 | * |
| 2176 | * Return: 0 if all went well, else returns appropriate error value. |
| 2177 | */ |
| 2178 | static int ti_sci_cmd_rm_psil_unpair(const struct ti_sci_handle *handle, |
| 2179 | u32 nav_id, u32 src_thread, u32 dst_thread) |
| 2180 | { |
| 2181 | struct ti_sci_msg_psil_unpair *req; |
| 2182 | struct ti_sci_msg_hdr *resp; |
| 2183 | struct ti_sci_xfer *xfer; |
| 2184 | struct ti_sci_info *info; |
| 2185 | struct device *dev; |
| 2186 | int ret = 0; |
| 2187 | |
| 2188 | if (IS_ERR(handle)) |
| 2189 | return PTR_ERR(handle); |
| 2190 | if (!handle) |
| 2191 | return -EINVAL; |
| 2192 | |
| 2193 | info = handle_to_ti_sci_info(handle); |
| 2194 | dev = info->dev; |
| 2195 | |
| 2196 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_PSIL_UNPAIR, |
| 2197 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 2198 | sizeof(*req), sizeof(*resp)); |
| 2199 | if (IS_ERR(xfer)) { |
| 2200 | ret = PTR_ERR(xfer); |
| 2201 | dev_err(dev, "RM_PSIL:Message reconfig failed(%d)\n", ret); |
| 2202 | return ret; |
| 2203 | } |
| 2204 | req = (struct ti_sci_msg_psil_unpair *)xfer->xfer_buf; |
| 2205 | req->nav_id = nav_id; |
| 2206 | req->src_thread = src_thread; |
| 2207 | req->dst_thread = dst_thread; |
| 2208 | |
| 2209 | ret = ti_sci_do_xfer(info, xfer); |
| 2210 | if (ret) { |
| 2211 | dev_err(dev, "RM_PSIL:Mbox send fail %d\n", ret); |
| 2212 | goto fail; |
| 2213 | } |
| 2214 | |
| 2215 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; |
| 2216 | ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL; |
| 2217 | |
| 2218 | fail: |
| 2219 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 2220 | |
| 2221 | return ret; |
| 2222 | } |
| 2223 | |
| 2224 | /** |
| 2225 | * ti_sci_cmd_rm_udmap_tx_ch_cfg() - Configure a UDMAP TX channel |
| 2226 | * @handle: Pointer to TI SCI handle. |
| 2227 | * @params: Pointer to ti_sci_msg_rm_udmap_tx_ch_cfg TX channel config |
| 2228 | * structure |
| 2229 | * |
| 2230 | * Return: 0 if all went well, else returns appropriate error value. |
| 2231 | * |
| 2232 | * See @ti_sci_msg_rm_udmap_tx_ch_cfg and @ti_sci_msg_rm_udmap_tx_ch_cfg_req for |
| 2233 | * more info. |
| 2234 | */ |
| 2235 | static int ti_sci_cmd_rm_udmap_tx_ch_cfg(const struct ti_sci_handle *handle, |
| 2236 | const struct ti_sci_msg_rm_udmap_tx_ch_cfg *params) |
| 2237 | { |
| 2238 | struct ti_sci_msg_rm_udmap_tx_ch_cfg_req *req; |
| 2239 | struct ti_sci_msg_hdr *resp; |
| 2240 | struct ti_sci_xfer *xfer; |
| 2241 | struct ti_sci_info *info; |
| 2242 | struct device *dev; |
| 2243 | int ret = 0; |
| 2244 | |
| 2245 | if (IS_ERR_OR_NULL(handle)) |
| 2246 | return -EINVAL; |
| 2247 | |
| 2248 | info = handle_to_ti_sci_info(handle); |
| 2249 | dev = info->dev; |
| 2250 | |
| 2251 | xfer = ti_sci_get_one_xfer(info, TISCI_MSG_RM_UDMAP_TX_CH_CFG, |
| 2252 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 2253 | sizeof(*req), sizeof(*resp)); |
| 2254 | if (IS_ERR(xfer)) { |
| 2255 | ret = PTR_ERR(xfer); |
YueHaibing | 4c96050 | 2019-06-18 21:32:25 -0700 | [diff] [blame] | 2256 | dev_err(dev, "Message TX_CH_CFG alloc failed(%d)\n", ret); |
Peter Ujfalusi | 68608b5 | 2019-06-10 12:18:56 +0300 | [diff] [blame] | 2257 | return ret; |
| 2258 | } |
| 2259 | req = (struct ti_sci_msg_rm_udmap_tx_ch_cfg_req *)xfer->xfer_buf; |
| 2260 | req->valid_params = params->valid_params; |
| 2261 | req->nav_id = params->nav_id; |
| 2262 | req->index = params->index; |
| 2263 | req->tx_pause_on_err = params->tx_pause_on_err; |
| 2264 | req->tx_filt_einfo = params->tx_filt_einfo; |
| 2265 | req->tx_filt_pswords = params->tx_filt_pswords; |
| 2266 | req->tx_atype = params->tx_atype; |
| 2267 | req->tx_chan_type = params->tx_chan_type; |
| 2268 | req->tx_supr_tdpkt = params->tx_supr_tdpkt; |
| 2269 | req->tx_fetch_size = params->tx_fetch_size; |
| 2270 | req->tx_credit_count = params->tx_credit_count; |
| 2271 | req->txcq_qnum = params->txcq_qnum; |
| 2272 | req->tx_priority = params->tx_priority; |
| 2273 | req->tx_qos = params->tx_qos; |
| 2274 | req->tx_orderid = params->tx_orderid; |
| 2275 | req->fdepth = params->fdepth; |
| 2276 | req->tx_sched_priority = params->tx_sched_priority; |
| 2277 | req->tx_burst_size = params->tx_burst_size; |
Peter Ujfalusi | 1c552e0 | 2020-10-25 12:10:02 -0700 | [diff] [blame] | 2278 | req->tx_tdtype = params->tx_tdtype; |
Peter Ujfalusi | ce1feed | 2020-10-25 12:10:05 -0700 | [diff] [blame] | 2279 | req->extended_ch_type = params->extended_ch_type; |
Peter Ujfalusi | 68608b5 | 2019-06-10 12:18:56 +0300 | [diff] [blame] | 2280 | |
| 2281 | ret = ti_sci_do_xfer(info, xfer); |
| 2282 | if (ret) { |
YueHaibing | 4c96050 | 2019-06-18 21:32:25 -0700 | [diff] [blame] | 2283 | dev_err(dev, "Mbox send TX_CH_CFG fail %d\n", ret); |
Peter Ujfalusi | 68608b5 | 2019-06-10 12:18:56 +0300 | [diff] [blame] | 2284 | goto fail; |
| 2285 | } |
| 2286 | |
| 2287 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; |
| 2288 | ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL; |
| 2289 | |
| 2290 | fail: |
| 2291 | ti_sci_put_one_xfer(&info->minfo, xfer); |
YueHaibing | 4c96050 | 2019-06-18 21:32:25 -0700 | [diff] [blame] | 2292 | dev_dbg(dev, "TX_CH_CFG: chn %u ret:%u\n", params->index, ret); |
Peter Ujfalusi | 68608b5 | 2019-06-10 12:18:56 +0300 | [diff] [blame] | 2293 | return ret; |
| 2294 | } |
| 2295 | |
| 2296 | /** |
| 2297 | * ti_sci_cmd_rm_udmap_rx_ch_cfg() - Configure a UDMAP RX channel |
| 2298 | * @handle: Pointer to TI SCI handle. |
| 2299 | * @params: Pointer to ti_sci_msg_rm_udmap_rx_ch_cfg RX channel config |
| 2300 | * structure |
| 2301 | * |
| 2302 | * Return: 0 if all went well, else returns appropriate error value. |
| 2303 | * |
| 2304 | * See @ti_sci_msg_rm_udmap_rx_ch_cfg and @ti_sci_msg_rm_udmap_rx_ch_cfg_req for |
| 2305 | * more info. |
| 2306 | */ |
| 2307 | static int ti_sci_cmd_rm_udmap_rx_ch_cfg(const struct ti_sci_handle *handle, |
| 2308 | const struct ti_sci_msg_rm_udmap_rx_ch_cfg *params) |
| 2309 | { |
| 2310 | struct ti_sci_msg_rm_udmap_rx_ch_cfg_req *req; |
| 2311 | struct ti_sci_msg_hdr *resp; |
| 2312 | struct ti_sci_xfer *xfer; |
| 2313 | struct ti_sci_info *info; |
| 2314 | struct device *dev; |
| 2315 | int ret = 0; |
| 2316 | |
| 2317 | if (IS_ERR_OR_NULL(handle)) |
| 2318 | return -EINVAL; |
| 2319 | |
| 2320 | info = handle_to_ti_sci_info(handle); |
| 2321 | dev = info->dev; |
| 2322 | |
| 2323 | xfer = ti_sci_get_one_xfer(info, TISCI_MSG_RM_UDMAP_RX_CH_CFG, |
| 2324 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 2325 | sizeof(*req), sizeof(*resp)); |
| 2326 | if (IS_ERR(xfer)) { |
| 2327 | ret = PTR_ERR(xfer); |
YueHaibing | 4c96050 | 2019-06-18 21:32:25 -0700 | [diff] [blame] | 2328 | dev_err(dev, "Message RX_CH_CFG alloc failed(%d)\n", ret); |
Peter Ujfalusi | 68608b5 | 2019-06-10 12:18:56 +0300 | [diff] [blame] | 2329 | return ret; |
| 2330 | } |
| 2331 | req = (struct ti_sci_msg_rm_udmap_rx_ch_cfg_req *)xfer->xfer_buf; |
| 2332 | req->valid_params = params->valid_params; |
| 2333 | req->nav_id = params->nav_id; |
| 2334 | req->index = params->index; |
| 2335 | req->rx_fetch_size = params->rx_fetch_size; |
| 2336 | req->rxcq_qnum = params->rxcq_qnum; |
| 2337 | req->rx_priority = params->rx_priority; |
| 2338 | req->rx_qos = params->rx_qos; |
| 2339 | req->rx_orderid = params->rx_orderid; |
| 2340 | req->rx_sched_priority = params->rx_sched_priority; |
| 2341 | req->flowid_start = params->flowid_start; |
| 2342 | req->flowid_cnt = params->flowid_cnt; |
| 2343 | req->rx_pause_on_err = params->rx_pause_on_err; |
| 2344 | req->rx_atype = params->rx_atype; |
| 2345 | req->rx_chan_type = params->rx_chan_type; |
| 2346 | req->rx_ignore_short = params->rx_ignore_short; |
| 2347 | req->rx_ignore_long = params->rx_ignore_long; |
| 2348 | req->rx_burst_size = params->rx_burst_size; |
| 2349 | |
| 2350 | ret = ti_sci_do_xfer(info, xfer); |
| 2351 | if (ret) { |
YueHaibing | 4c96050 | 2019-06-18 21:32:25 -0700 | [diff] [blame] | 2352 | dev_err(dev, "Mbox send RX_CH_CFG fail %d\n", ret); |
Peter Ujfalusi | 68608b5 | 2019-06-10 12:18:56 +0300 | [diff] [blame] | 2353 | goto fail; |
| 2354 | } |
| 2355 | |
| 2356 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; |
| 2357 | ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL; |
| 2358 | |
| 2359 | fail: |
| 2360 | ti_sci_put_one_xfer(&info->minfo, xfer); |
YueHaibing | 4c96050 | 2019-06-18 21:32:25 -0700 | [diff] [blame] | 2361 | dev_dbg(dev, "RX_CH_CFG: chn %u ret:%d\n", params->index, ret); |
Peter Ujfalusi | 68608b5 | 2019-06-10 12:18:56 +0300 | [diff] [blame] | 2362 | return ret; |
| 2363 | } |
| 2364 | |
| 2365 | /** |
| 2366 | * ti_sci_cmd_rm_udmap_rx_flow_cfg() - Configure UDMAP RX FLOW |
| 2367 | * @handle: Pointer to TI SCI handle. |
| 2368 | * @params: Pointer to ti_sci_msg_rm_udmap_flow_cfg RX FLOW config |
| 2369 | * structure |
| 2370 | * |
| 2371 | * Return: 0 if all went well, else returns appropriate error value. |
| 2372 | * |
| 2373 | * See @ti_sci_msg_rm_udmap_flow_cfg and @ti_sci_msg_rm_udmap_flow_cfg_req for |
| 2374 | * more info. |
| 2375 | */ |
| 2376 | static int ti_sci_cmd_rm_udmap_rx_flow_cfg(const struct ti_sci_handle *handle, |
| 2377 | const struct ti_sci_msg_rm_udmap_flow_cfg *params) |
| 2378 | { |
| 2379 | struct ti_sci_msg_rm_udmap_flow_cfg_req *req; |
| 2380 | struct ti_sci_msg_hdr *resp; |
| 2381 | struct ti_sci_xfer *xfer; |
| 2382 | struct ti_sci_info *info; |
| 2383 | struct device *dev; |
| 2384 | int ret = 0; |
| 2385 | |
| 2386 | if (IS_ERR_OR_NULL(handle)) |
| 2387 | return -EINVAL; |
| 2388 | |
| 2389 | info = handle_to_ti_sci_info(handle); |
| 2390 | dev = info->dev; |
| 2391 | |
| 2392 | xfer = ti_sci_get_one_xfer(info, TISCI_MSG_RM_UDMAP_FLOW_CFG, |
| 2393 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 2394 | sizeof(*req), sizeof(*resp)); |
| 2395 | if (IS_ERR(xfer)) { |
| 2396 | ret = PTR_ERR(xfer); |
| 2397 | dev_err(dev, "RX_FL_CFG: Message alloc failed(%d)\n", ret); |
| 2398 | return ret; |
| 2399 | } |
| 2400 | req = (struct ti_sci_msg_rm_udmap_flow_cfg_req *)xfer->xfer_buf; |
| 2401 | req->valid_params = params->valid_params; |
| 2402 | req->nav_id = params->nav_id; |
| 2403 | req->flow_index = params->flow_index; |
| 2404 | req->rx_einfo_present = params->rx_einfo_present; |
| 2405 | req->rx_psinfo_present = params->rx_psinfo_present; |
| 2406 | req->rx_error_handling = params->rx_error_handling; |
| 2407 | req->rx_desc_type = params->rx_desc_type; |
| 2408 | req->rx_sop_offset = params->rx_sop_offset; |
| 2409 | req->rx_dest_qnum = params->rx_dest_qnum; |
| 2410 | req->rx_src_tag_hi = params->rx_src_tag_hi; |
| 2411 | req->rx_src_tag_lo = params->rx_src_tag_lo; |
| 2412 | req->rx_dest_tag_hi = params->rx_dest_tag_hi; |
| 2413 | req->rx_dest_tag_lo = params->rx_dest_tag_lo; |
| 2414 | req->rx_src_tag_hi_sel = params->rx_src_tag_hi_sel; |
| 2415 | req->rx_src_tag_lo_sel = params->rx_src_tag_lo_sel; |
| 2416 | req->rx_dest_tag_hi_sel = params->rx_dest_tag_hi_sel; |
| 2417 | req->rx_dest_tag_lo_sel = params->rx_dest_tag_lo_sel; |
| 2418 | req->rx_fdq0_sz0_qnum = params->rx_fdq0_sz0_qnum; |
| 2419 | req->rx_fdq1_qnum = params->rx_fdq1_qnum; |
| 2420 | req->rx_fdq2_qnum = params->rx_fdq2_qnum; |
| 2421 | req->rx_fdq3_qnum = params->rx_fdq3_qnum; |
| 2422 | req->rx_ps_location = params->rx_ps_location; |
| 2423 | |
| 2424 | ret = ti_sci_do_xfer(info, xfer); |
| 2425 | if (ret) { |
| 2426 | dev_err(dev, "RX_FL_CFG: Mbox send fail %d\n", ret); |
| 2427 | goto fail; |
| 2428 | } |
| 2429 | |
| 2430 | resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf; |
| 2431 | ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL; |
| 2432 | |
| 2433 | fail: |
| 2434 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 2435 | dev_dbg(info->dev, "RX_FL_CFG: %u ret:%d\n", params->flow_index, ret); |
| 2436 | return ret; |
| 2437 | } |
| 2438 | |
Suman Anna | 1e407f3 | 2019-06-05 17:33:34 -0500 | [diff] [blame] | 2439 | /** |
| 2440 | * ti_sci_cmd_proc_request() - Command to request a physical processor control |
| 2441 | * @handle: Pointer to TI SCI handle |
| 2442 | * @proc_id: Processor ID this request is for |
| 2443 | * |
| 2444 | * Return: 0 if all went well, else returns appropriate error value. |
| 2445 | */ |
| 2446 | static int ti_sci_cmd_proc_request(const struct ti_sci_handle *handle, |
| 2447 | u8 proc_id) |
| 2448 | { |
| 2449 | struct ti_sci_msg_req_proc_request *req; |
| 2450 | struct ti_sci_msg_hdr *resp; |
| 2451 | struct ti_sci_info *info; |
| 2452 | struct ti_sci_xfer *xfer; |
| 2453 | struct device *dev; |
| 2454 | int ret = 0; |
| 2455 | |
| 2456 | if (!handle) |
| 2457 | return -EINVAL; |
| 2458 | if (IS_ERR(handle)) |
| 2459 | return PTR_ERR(handle); |
| 2460 | |
| 2461 | info = handle_to_ti_sci_info(handle); |
| 2462 | dev = info->dev; |
| 2463 | |
| 2464 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_PROC_REQUEST, |
| 2465 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 2466 | sizeof(*req), sizeof(*resp)); |
| 2467 | if (IS_ERR(xfer)) { |
| 2468 | ret = PTR_ERR(xfer); |
| 2469 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 2470 | return ret; |
| 2471 | } |
| 2472 | req = (struct ti_sci_msg_req_proc_request *)xfer->xfer_buf; |
| 2473 | req->processor_id = proc_id; |
| 2474 | |
| 2475 | ret = ti_sci_do_xfer(info, xfer); |
| 2476 | if (ret) { |
| 2477 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 2478 | goto fail; |
| 2479 | } |
| 2480 | |
| 2481 | resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf; |
| 2482 | |
| 2483 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; |
| 2484 | |
| 2485 | fail: |
| 2486 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 2487 | |
| 2488 | return ret; |
| 2489 | } |
| 2490 | |
| 2491 | /** |
| 2492 | * ti_sci_cmd_proc_release() - Command to release a physical processor control |
| 2493 | * @handle: Pointer to TI SCI handle |
| 2494 | * @proc_id: Processor ID this request is for |
| 2495 | * |
| 2496 | * Return: 0 if all went well, else returns appropriate error value. |
| 2497 | */ |
| 2498 | static int ti_sci_cmd_proc_release(const struct ti_sci_handle *handle, |
| 2499 | u8 proc_id) |
| 2500 | { |
| 2501 | struct ti_sci_msg_req_proc_release *req; |
| 2502 | struct ti_sci_msg_hdr *resp; |
| 2503 | struct ti_sci_info *info; |
| 2504 | struct ti_sci_xfer *xfer; |
| 2505 | struct device *dev; |
| 2506 | int ret = 0; |
| 2507 | |
| 2508 | if (!handle) |
| 2509 | return -EINVAL; |
| 2510 | if (IS_ERR(handle)) |
| 2511 | return PTR_ERR(handle); |
| 2512 | |
| 2513 | info = handle_to_ti_sci_info(handle); |
| 2514 | dev = info->dev; |
| 2515 | |
| 2516 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_PROC_RELEASE, |
| 2517 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 2518 | sizeof(*req), sizeof(*resp)); |
| 2519 | if (IS_ERR(xfer)) { |
| 2520 | ret = PTR_ERR(xfer); |
| 2521 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 2522 | return ret; |
| 2523 | } |
| 2524 | req = (struct ti_sci_msg_req_proc_release *)xfer->xfer_buf; |
| 2525 | req->processor_id = proc_id; |
| 2526 | |
| 2527 | ret = ti_sci_do_xfer(info, xfer); |
| 2528 | if (ret) { |
| 2529 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 2530 | goto fail; |
| 2531 | } |
| 2532 | |
| 2533 | resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf; |
| 2534 | |
| 2535 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; |
| 2536 | |
| 2537 | fail: |
| 2538 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 2539 | |
| 2540 | return ret; |
| 2541 | } |
| 2542 | |
| 2543 | /** |
| 2544 | * ti_sci_cmd_proc_handover() - Command to handover a physical processor |
| 2545 | * control to a host in the processor's access |
| 2546 | * control list. |
| 2547 | * @handle: Pointer to TI SCI handle |
| 2548 | * @proc_id: Processor ID this request is for |
| 2549 | * @host_id: Host ID to get the control of the processor |
| 2550 | * |
| 2551 | * Return: 0 if all went well, else returns appropriate error value. |
| 2552 | */ |
| 2553 | static int ti_sci_cmd_proc_handover(const struct ti_sci_handle *handle, |
| 2554 | u8 proc_id, u8 host_id) |
| 2555 | { |
| 2556 | struct ti_sci_msg_req_proc_handover *req; |
| 2557 | struct ti_sci_msg_hdr *resp; |
| 2558 | struct ti_sci_info *info; |
| 2559 | struct ti_sci_xfer *xfer; |
| 2560 | struct device *dev; |
| 2561 | int ret = 0; |
| 2562 | |
| 2563 | if (!handle) |
| 2564 | return -EINVAL; |
| 2565 | if (IS_ERR(handle)) |
| 2566 | return PTR_ERR(handle); |
| 2567 | |
| 2568 | info = handle_to_ti_sci_info(handle); |
| 2569 | dev = info->dev; |
| 2570 | |
| 2571 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_PROC_HANDOVER, |
| 2572 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 2573 | sizeof(*req), sizeof(*resp)); |
| 2574 | if (IS_ERR(xfer)) { |
| 2575 | ret = PTR_ERR(xfer); |
| 2576 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 2577 | return ret; |
| 2578 | } |
| 2579 | req = (struct ti_sci_msg_req_proc_handover *)xfer->xfer_buf; |
| 2580 | req->processor_id = proc_id; |
| 2581 | req->host_id = host_id; |
| 2582 | |
| 2583 | ret = ti_sci_do_xfer(info, xfer); |
| 2584 | if (ret) { |
| 2585 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 2586 | goto fail; |
| 2587 | } |
| 2588 | |
| 2589 | resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf; |
| 2590 | |
| 2591 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; |
| 2592 | |
| 2593 | fail: |
| 2594 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 2595 | |
| 2596 | return ret; |
| 2597 | } |
| 2598 | |
| 2599 | /** |
| 2600 | * ti_sci_cmd_proc_set_config() - Command to set the processor boot |
| 2601 | * configuration flags |
| 2602 | * @handle: Pointer to TI SCI handle |
| 2603 | * @proc_id: Processor ID this request is for |
Nishanth Menon | 3e67fd8 | 2023-06-20 21:16:19 -0500 | [diff] [blame] | 2604 | * @bootvector: Processor Boot vector (start address) |
Suman Anna | 1e407f3 | 2019-06-05 17:33:34 -0500 | [diff] [blame] | 2605 | * @config_flags_set: Configuration flags to be set |
| 2606 | * @config_flags_clear: Configuration flags to be cleared. |
| 2607 | * |
| 2608 | * Return: 0 if all went well, else returns appropriate error value. |
| 2609 | */ |
| 2610 | static int ti_sci_cmd_proc_set_config(const struct ti_sci_handle *handle, |
| 2611 | u8 proc_id, u64 bootvector, |
| 2612 | u32 config_flags_set, |
| 2613 | u32 config_flags_clear) |
| 2614 | { |
| 2615 | struct ti_sci_msg_req_set_config *req; |
| 2616 | struct ti_sci_msg_hdr *resp; |
| 2617 | struct ti_sci_info *info; |
| 2618 | struct ti_sci_xfer *xfer; |
| 2619 | struct device *dev; |
| 2620 | int ret = 0; |
| 2621 | |
| 2622 | if (!handle) |
| 2623 | return -EINVAL; |
| 2624 | if (IS_ERR(handle)) |
| 2625 | return PTR_ERR(handle); |
| 2626 | |
| 2627 | info = handle_to_ti_sci_info(handle); |
| 2628 | dev = info->dev; |
| 2629 | |
| 2630 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CONFIG, |
| 2631 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 2632 | sizeof(*req), sizeof(*resp)); |
| 2633 | if (IS_ERR(xfer)) { |
| 2634 | ret = PTR_ERR(xfer); |
| 2635 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 2636 | return ret; |
| 2637 | } |
| 2638 | req = (struct ti_sci_msg_req_set_config *)xfer->xfer_buf; |
| 2639 | req->processor_id = proc_id; |
| 2640 | req->bootvector_low = bootvector & TI_SCI_ADDR_LOW_MASK; |
| 2641 | req->bootvector_high = (bootvector & TI_SCI_ADDR_HIGH_MASK) >> |
| 2642 | TI_SCI_ADDR_HIGH_SHIFT; |
| 2643 | req->config_flags_set = config_flags_set; |
| 2644 | req->config_flags_clear = config_flags_clear; |
| 2645 | |
| 2646 | ret = ti_sci_do_xfer(info, xfer); |
| 2647 | if (ret) { |
| 2648 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 2649 | goto fail; |
| 2650 | } |
| 2651 | |
| 2652 | resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf; |
| 2653 | |
| 2654 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; |
| 2655 | |
| 2656 | fail: |
| 2657 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 2658 | |
| 2659 | return ret; |
| 2660 | } |
| 2661 | |
| 2662 | /** |
| 2663 | * ti_sci_cmd_proc_set_control() - Command to set the processor boot |
| 2664 | * control flags |
| 2665 | * @handle: Pointer to TI SCI handle |
| 2666 | * @proc_id: Processor ID this request is for |
| 2667 | * @control_flags_set: Control flags to be set |
| 2668 | * @control_flags_clear: Control flags to be cleared |
| 2669 | * |
| 2670 | * Return: 0 if all went well, else returns appropriate error value. |
| 2671 | */ |
| 2672 | static int ti_sci_cmd_proc_set_control(const struct ti_sci_handle *handle, |
| 2673 | u8 proc_id, u32 control_flags_set, |
| 2674 | u32 control_flags_clear) |
| 2675 | { |
| 2676 | struct ti_sci_msg_req_set_ctrl *req; |
| 2677 | struct ti_sci_msg_hdr *resp; |
| 2678 | struct ti_sci_info *info; |
| 2679 | struct ti_sci_xfer *xfer; |
| 2680 | struct device *dev; |
| 2681 | int ret = 0; |
| 2682 | |
| 2683 | if (!handle) |
| 2684 | return -EINVAL; |
| 2685 | if (IS_ERR(handle)) |
| 2686 | return PTR_ERR(handle); |
| 2687 | |
| 2688 | info = handle_to_ti_sci_info(handle); |
| 2689 | dev = info->dev; |
| 2690 | |
| 2691 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CTRL, |
| 2692 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 2693 | sizeof(*req), sizeof(*resp)); |
| 2694 | if (IS_ERR(xfer)) { |
| 2695 | ret = PTR_ERR(xfer); |
| 2696 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 2697 | return ret; |
| 2698 | } |
| 2699 | req = (struct ti_sci_msg_req_set_ctrl *)xfer->xfer_buf; |
| 2700 | req->processor_id = proc_id; |
| 2701 | req->control_flags_set = control_flags_set; |
| 2702 | req->control_flags_clear = control_flags_clear; |
| 2703 | |
| 2704 | ret = ti_sci_do_xfer(info, xfer); |
| 2705 | if (ret) { |
| 2706 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 2707 | goto fail; |
| 2708 | } |
| 2709 | |
| 2710 | resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf; |
| 2711 | |
| 2712 | ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV; |
| 2713 | |
| 2714 | fail: |
| 2715 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 2716 | |
| 2717 | return ret; |
| 2718 | } |
| 2719 | |
| 2720 | /** |
Nishanth Menon | 3e67fd8 | 2023-06-20 21:16:19 -0500 | [diff] [blame] | 2721 | * ti_sci_cmd_proc_get_status() - Command to get the processor boot status |
Suman Anna | 1e407f3 | 2019-06-05 17:33:34 -0500 | [diff] [blame] | 2722 | * @handle: Pointer to TI SCI handle |
| 2723 | * @proc_id: Processor ID this request is for |
Nishanth Menon | 3e67fd8 | 2023-06-20 21:16:19 -0500 | [diff] [blame] | 2724 | * @bv: Processor Boot vector (start address) |
| 2725 | * @cfg_flags: Processor specific configuration flags |
| 2726 | * @ctrl_flags: Processor specific control flags |
| 2727 | * @sts_flags: Processor specific status flags |
Suman Anna | 1e407f3 | 2019-06-05 17:33:34 -0500 | [diff] [blame] | 2728 | * |
| 2729 | * Return: 0 if all went well, else returns appropriate error value. |
| 2730 | */ |
| 2731 | static int ti_sci_cmd_proc_get_status(const struct ti_sci_handle *handle, |
| 2732 | u8 proc_id, u64 *bv, u32 *cfg_flags, |
| 2733 | u32 *ctrl_flags, u32 *sts_flags) |
| 2734 | { |
| 2735 | struct ti_sci_msg_resp_get_status *resp; |
| 2736 | struct ti_sci_msg_req_get_status *req; |
| 2737 | struct ti_sci_info *info; |
| 2738 | struct ti_sci_xfer *xfer; |
| 2739 | struct device *dev; |
| 2740 | int ret = 0; |
| 2741 | |
| 2742 | if (!handle) |
| 2743 | return -EINVAL; |
| 2744 | if (IS_ERR(handle)) |
| 2745 | return PTR_ERR(handle); |
| 2746 | |
| 2747 | info = handle_to_ti_sci_info(handle); |
| 2748 | dev = info->dev; |
| 2749 | |
| 2750 | xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_STATUS, |
| 2751 | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
| 2752 | sizeof(*req), sizeof(*resp)); |
| 2753 | if (IS_ERR(xfer)) { |
| 2754 | ret = PTR_ERR(xfer); |
| 2755 | dev_err(dev, "Message alloc failed(%d)\n", ret); |
| 2756 | return ret; |
| 2757 | } |
| 2758 | req = (struct ti_sci_msg_req_get_status *)xfer->xfer_buf; |
| 2759 | req->processor_id = proc_id; |
| 2760 | |
| 2761 | ret = ti_sci_do_xfer(info, xfer); |
| 2762 | if (ret) { |
| 2763 | dev_err(dev, "Mbox send fail %d\n", ret); |
| 2764 | goto fail; |
| 2765 | } |
| 2766 | |
| 2767 | resp = (struct ti_sci_msg_resp_get_status *)xfer->tx_message.buf; |
| 2768 | |
| 2769 | if (!ti_sci_is_response_ack(resp)) { |
| 2770 | ret = -ENODEV; |
| 2771 | } else { |
| 2772 | *bv = (resp->bootvector_low & TI_SCI_ADDR_LOW_MASK) | |
| 2773 | (((u64)resp->bootvector_high << TI_SCI_ADDR_HIGH_SHIFT) & |
| 2774 | TI_SCI_ADDR_HIGH_MASK); |
| 2775 | *cfg_flags = resp->config_flags; |
| 2776 | *ctrl_flags = resp->control_flags; |
| 2777 | *sts_flags = resp->status_flags; |
| 2778 | } |
| 2779 | |
| 2780 | fail: |
| 2781 | ti_sci_put_one_xfer(&info->minfo, xfer); |
| 2782 | |
| 2783 | return ret; |
| 2784 | } |
| 2785 | |
Nishanth Menon | 9e7d756 | 2016-10-18 18:08:35 -0500 | [diff] [blame] | 2786 | /* |
| 2787 | * ti_sci_setup_ops() - Setup the operations structures |
| 2788 | * @info: pointer to TISCI pointer |
| 2789 | */ |
| 2790 | static void ti_sci_setup_ops(struct ti_sci_info *info) |
| 2791 | { |
| 2792 | struct ti_sci_ops *ops = &info->handle.ops; |
Nishanth Menon | 912cffb | 2016-10-18 18:08:37 -0500 | [diff] [blame] | 2793 | struct ti_sci_core_ops *core_ops = &ops->core_ops; |
Nishanth Menon | 9e7d756 | 2016-10-18 18:08:35 -0500 | [diff] [blame] | 2794 | struct ti_sci_dev_ops *dops = &ops->dev_ops; |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 2795 | struct ti_sci_clk_ops *cops = &ops->clk_ops; |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 2796 | struct ti_sci_rm_core_ops *rm_core_ops = &ops->rm_core_ops; |
Lokesh Vutla | 997b001 | 2019-04-30 15:42:19 +0530 | [diff] [blame] | 2797 | struct ti_sci_rm_irq_ops *iops = &ops->rm_irq_ops; |
Peter Ujfalusi | 68608b5 | 2019-06-10 12:18:56 +0300 | [diff] [blame] | 2798 | struct ti_sci_rm_ringacc_ops *rops = &ops->rm_ring_ops; |
| 2799 | struct ti_sci_rm_psil_ops *psilops = &ops->rm_psil_ops; |
| 2800 | struct ti_sci_rm_udmap_ops *udmap_ops = &ops->rm_udmap_ops; |
Suman Anna | 1e407f3 | 2019-06-05 17:33:34 -0500 | [diff] [blame] | 2801 | struct ti_sci_proc_ops *pops = &ops->proc_ops; |
Nishanth Menon | 9e7d756 | 2016-10-18 18:08:35 -0500 | [diff] [blame] | 2802 | |
Nishanth Menon | 912cffb | 2016-10-18 18:08:37 -0500 | [diff] [blame] | 2803 | core_ops->reboot_device = ti_sci_cmd_core_reboot; |
| 2804 | |
Nishanth Menon | 9e7d756 | 2016-10-18 18:08:35 -0500 | [diff] [blame] | 2805 | dops->get_device = ti_sci_cmd_get_device; |
Lokesh Vutla | 45b659e | 2019-08-26 20:00:40 -0700 | [diff] [blame] | 2806 | dops->get_device_exclusive = ti_sci_cmd_get_device_exclusive; |
Nishanth Menon | 9e7d756 | 2016-10-18 18:08:35 -0500 | [diff] [blame] | 2807 | dops->idle_device = ti_sci_cmd_idle_device; |
Lokesh Vutla | 45b659e | 2019-08-26 20:00:40 -0700 | [diff] [blame] | 2808 | dops->idle_device_exclusive = ti_sci_cmd_idle_device_exclusive; |
Nishanth Menon | 9e7d756 | 2016-10-18 18:08:35 -0500 | [diff] [blame] | 2809 | dops->put_device = ti_sci_cmd_put_device; |
| 2810 | |
| 2811 | dops->is_valid = ti_sci_cmd_dev_is_valid; |
| 2812 | dops->get_context_loss_count = ti_sci_cmd_dev_get_clcnt; |
| 2813 | dops->is_idle = ti_sci_cmd_dev_is_idle; |
| 2814 | dops->is_stop = ti_sci_cmd_dev_is_stop; |
| 2815 | dops->is_on = ti_sci_cmd_dev_is_on; |
| 2816 | dops->is_transitioning = ti_sci_cmd_dev_is_trans; |
| 2817 | dops->set_device_resets = ti_sci_cmd_set_device_resets; |
| 2818 | dops->get_device_resets = ti_sci_cmd_get_device_resets; |
Nishanth Menon | 9f72322 | 2016-10-18 18:08:36 -0500 | [diff] [blame] | 2819 | |
| 2820 | cops->get_clock = ti_sci_cmd_get_clock; |
| 2821 | cops->idle_clock = ti_sci_cmd_idle_clock; |
| 2822 | cops->put_clock = ti_sci_cmd_put_clock; |
| 2823 | cops->is_auto = ti_sci_cmd_clk_is_auto; |
| 2824 | cops->is_on = ti_sci_cmd_clk_is_on; |
| 2825 | cops->is_off = ti_sci_cmd_clk_is_off; |
| 2826 | |
| 2827 | cops->set_parent = ti_sci_cmd_clk_set_parent; |
| 2828 | cops->get_parent = ti_sci_cmd_clk_get_parent; |
| 2829 | cops->get_num_parents = ti_sci_cmd_clk_get_num_parents; |
| 2830 | |
| 2831 | cops->get_best_match_freq = ti_sci_cmd_clk_get_match_freq; |
| 2832 | cops->set_freq = ti_sci_cmd_clk_set_freq; |
| 2833 | cops->get_freq = ti_sci_cmd_clk_get_freq; |
Lokesh Vutla | 9c19fb6 | 2019-04-30 15:42:18 +0530 | [diff] [blame] | 2834 | |
| 2835 | rm_core_ops->get_range = ti_sci_cmd_get_resource_range; |
| 2836 | rm_core_ops->get_range_from_shost = |
| 2837 | ti_sci_cmd_get_resource_range_from_shost; |
Lokesh Vutla | 997b001 | 2019-04-30 15:42:19 +0530 | [diff] [blame] | 2838 | |
| 2839 | iops->set_irq = ti_sci_cmd_set_irq; |
| 2840 | iops->set_event_map = ti_sci_cmd_set_event_map; |
| 2841 | iops->free_irq = ti_sci_cmd_free_irq; |
| 2842 | iops->free_event_map = ti_sci_cmd_free_event_map; |
Peter Ujfalusi | 68608b5 | 2019-06-10 12:18:56 +0300 | [diff] [blame] | 2843 | |
Peter Ujfalusi | 3c20175 | 2020-10-25 12:10:06 -0700 | [diff] [blame] | 2844 | rops->set_cfg = ti_sci_cmd_rm_ring_cfg; |
Peter Ujfalusi | 68608b5 | 2019-06-10 12:18:56 +0300 | [diff] [blame] | 2845 | |
| 2846 | psilops->pair = ti_sci_cmd_rm_psil_pair; |
| 2847 | psilops->unpair = ti_sci_cmd_rm_psil_unpair; |
| 2848 | |
| 2849 | udmap_ops->tx_ch_cfg = ti_sci_cmd_rm_udmap_tx_ch_cfg; |
| 2850 | udmap_ops->rx_ch_cfg = ti_sci_cmd_rm_udmap_rx_ch_cfg; |
| 2851 | udmap_ops->rx_flow_cfg = ti_sci_cmd_rm_udmap_rx_flow_cfg; |
Suman Anna | 1e407f3 | 2019-06-05 17:33:34 -0500 | [diff] [blame] | 2852 | |
| 2853 | pops->request = ti_sci_cmd_proc_request; |
| 2854 | pops->release = ti_sci_cmd_proc_release; |
| 2855 | pops->handover = ti_sci_cmd_proc_handover; |
| 2856 | pops->set_config = ti_sci_cmd_proc_set_config; |
| 2857 | pops->set_control = ti_sci_cmd_proc_set_control; |
| 2858 | pops->get_status = ti_sci_cmd_proc_get_status; |
Nishanth Menon | 9e7d756 | 2016-10-18 18:08:35 -0500 | [diff] [blame] | 2859 | } |
| 2860 | |
| 2861 | /** |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 2862 | * ti_sci_get_handle() - Get the TI SCI handle for a device |
| 2863 | * @dev: Pointer to device for which we want SCI handle |
| 2864 | * |
| 2865 | * NOTE: The function does not track individual clients of the framework |
| 2866 | * and is expected to be maintained by caller of TI SCI protocol library. |
| 2867 | * ti_sci_put_handle must be balanced with successful ti_sci_get_handle |
| 2868 | * Return: pointer to handle if successful, else: |
| 2869 | * -EPROBE_DEFER if the instance is not ready |
| 2870 | * -ENODEV if the required node handler is missing |
| 2871 | * -EINVAL if invalid conditions are encountered. |
| 2872 | */ |
| 2873 | const struct ti_sci_handle *ti_sci_get_handle(struct device *dev) |
| 2874 | { |
| 2875 | struct device_node *ti_sci_np; |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 2876 | struct ti_sci_handle *handle = NULL; |
| 2877 | struct ti_sci_info *info; |
| 2878 | |
| 2879 | if (!dev) { |
| 2880 | pr_err("I need a device pointer\n"); |
| 2881 | return ERR_PTR(-EINVAL); |
| 2882 | } |
| 2883 | ti_sci_np = of_get_parent(dev->of_node); |
| 2884 | if (!ti_sci_np) { |
| 2885 | dev_err(dev, "No OF information\n"); |
| 2886 | return ERR_PTR(-EINVAL); |
| 2887 | } |
| 2888 | |
| 2889 | mutex_lock(&ti_sci_list_mutex); |
Jinjie Ruan | be6d43e | 2023-08-30 17:03:44 +0800 | [diff] [blame] | 2890 | list_for_each_entry(info, &ti_sci_list, node) { |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 2891 | if (ti_sci_np == info->dev->of_node) { |
| 2892 | handle = &info->handle; |
| 2893 | info->users++; |
| 2894 | break; |
| 2895 | } |
| 2896 | } |
| 2897 | mutex_unlock(&ti_sci_list_mutex); |
| 2898 | of_node_put(ti_sci_np); |
| 2899 | |
| 2900 | if (!handle) |
| 2901 | return ERR_PTR(-EPROBE_DEFER); |
| 2902 | |
| 2903 | return handle; |
| 2904 | } |
| 2905 | EXPORT_SYMBOL_GPL(ti_sci_get_handle); |
| 2906 | |
| 2907 | /** |
| 2908 | * ti_sci_put_handle() - Release the handle acquired by ti_sci_get_handle |
| 2909 | * @handle: Handle acquired by ti_sci_get_handle |
| 2910 | * |
| 2911 | * NOTE: The function does not track individual clients of the framework |
| 2912 | * and is expected to be maintained by caller of TI SCI protocol library. |
| 2913 | * ti_sci_put_handle must be balanced with successful ti_sci_get_handle |
| 2914 | * |
| 2915 | * Return: 0 is successfully released |
| 2916 | * if an error pointer was passed, it returns the error value back, |
| 2917 | * if null was passed, it returns -EINVAL; |
| 2918 | */ |
| 2919 | int ti_sci_put_handle(const struct ti_sci_handle *handle) |
| 2920 | { |
| 2921 | struct ti_sci_info *info; |
| 2922 | |
| 2923 | if (IS_ERR(handle)) |
| 2924 | return PTR_ERR(handle); |
| 2925 | if (!handle) |
| 2926 | return -EINVAL; |
| 2927 | |
| 2928 | info = handle_to_ti_sci_info(handle); |
| 2929 | mutex_lock(&ti_sci_list_mutex); |
| 2930 | if (!WARN_ON(!info->users)) |
| 2931 | info->users--; |
| 2932 | mutex_unlock(&ti_sci_list_mutex); |
| 2933 | |
| 2934 | return 0; |
| 2935 | } |
| 2936 | EXPORT_SYMBOL_GPL(ti_sci_put_handle); |
| 2937 | |
| 2938 | static void devm_ti_sci_release(struct device *dev, void *res) |
| 2939 | { |
| 2940 | const struct ti_sci_handle **ptr = res; |
| 2941 | const struct ti_sci_handle *handle = *ptr; |
| 2942 | int ret; |
| 2943 | |
| 2944 | ret = ti_sci_put_handle(handle); |
| 2945 | if (ret) |
| 2946 | dev_err(dev, "failed to put handle %d\n", ret); |
| 2947 | } |
| 2948 | |
| 2949 | /** |
| 2950 | * devm_ti_sci_get_handle() - Managed get handle |
| 2951 | * @dev: device for which we want SCI handle for. |
| 2952 | * |
| 2953 | * NOTE: This releases the handle once the device resources are |
| 2954 | * no longer needed. MUST NOT BE released with ti_sci_put_handle. |
| 2955 | * The function does not track individual clients of the framework |
| 2956 | * and is expected to be maintained by caller of TI SCI protocol library. |
| 2957 | * |
| 2958 | * Return: 0 if all went fine, else corresponding error. |
| 2959 | */ |
| 2960 | const struct ti_sci_handle *devm_ti_sci_get_handle(struct device *dev) |
| 2961 | { |
| 2962 | const struct ti_sci_handle **ptr; |
| 2963 | const struct ti_sci_handle *handle; |
| 2964 | |
| 2965 | ptr = devres_alloc(devm_ti_sci_release, sizeof(*ptr), GFP_KERNEL); |
| 2966 | if (!ptr) |
| 2967 | return ERR_PTR(-ENOMEM); |
| 2968 | handle = ti_sci_get_handle(dev); |
| 2969 | |
| 2970 | if (!IS_ERR(handle)) { |
| 2971 | *ptr = handle; |
| 2972 | devres_add(dev, ptr); |
| 2973 | } else { |
| 2974 | devres_free(ptr); |
| 2975 | } |
| 2976 | |
| 2977 | return handle; |
| 2978 | } |
| 2979 | EXPORT_SYMBOL_GPL(devm_ti_sci_get_handle); |
| 2980 | |
Grygorii Strashko | 905c304 | 2019-04-30 15:42:17 +0530 | [diff] [blame] | 2981 | /** |
| 2982 | * ti_sci_get_by_phandle() - Get the TI SCI handle using DT phandle |
| 2983 | * @np: device node |
| 2984 | * @property: property name containing phandle on TISCI node |
| 2985 | * |
| 2986 | * NOTE: The function does not track individual clients of the framework |
| 2987 | * and is expected to be maintained by caller of TI SCI protocol library. |
| 2988 | * ti_sci_put_handle must be balanced with successful ti_sci_get_by_phandle |
| 2989 | * Return: pointer to handle if successful, else: |
| 2990 | * -EPROBE_DEFER if the instance is not ready |
| 2991 | * -ENODEV if the required node handler is missing |
| 2992 | * -EINVAL if invalid conditions are encountered. |
| 2993 | */ |
| 2994 | const struct ti_sci_handle *ti_sci_get_by_phandle(struct device_node *np, |
| 2995 | const char *property) |
| 2996 | { |
| 2997 | struct ti_sci_handle *handle = NULL; |
| 2998 | struct device_node *ti_sci_np; |
| 2999 | struct ti_sci_info *info; |
Grygorii Strashko | 905c304 | 2019-04-30 15:42:17 +0530 | [diff] [blame] | 3000 | |
| 3001 | if (!np) { |
| 3002 | pr_err("I need a device pointer\n"); |
| 3003 | return ERR_PTR(-EINVAL); |
| 3004 | } |
| 3005 | |
| 3006 | ti_sci_np = of_parse_phandle(np, property, 0); |
| 3007 | if (!ti_sci_np) |
| 3008 | return ERR_PTR(-ENODEV); |
| 3009 | |
| 3010 | mutex_lock(&ti_sci_list_mutex); |
Jinjie Ruan | be6d43e | 2023-08-30 17:03:44 +0800 | [diff] [blame] | 3011 | list_for_each_entry(info, &ti_sci_list, node) { |
Grygorii Strashko | 905c304 | 2019-04-30 15:42:17 +0530 | [diff] [blame] | 3012 | if (ti_sci_np == info->dev->of_node) { |
| 3013 | handle = &info->handle; |
| 3014 | info->users++; |
| 3015 | break; |
| 3016 | } |
| 3017 | } |
| 3018 | mutex_unlock(&ti_sci_list_mutex); |
| 3019 | of_node_put(ti_sci_np); |
| 3020 | |
| 3021 | if (!handle) |
| 3022 | return ERR_PTR(-EPROBE_DEFER); |
| 3023 | |
| 3024 | return handle; |
| 3025 | } |
| 3026 | EXPORT_SYMBOL_GPL(ti_sci_get_by_phandle); |
| 3027 | |
| 3028 | /** |
| 3029 | * devm_ti_sci_get_by_phandle() - Managed get handle using phandle |
| 3030 | * @dev: Device pointer requesting TISCI handle |
| 3031 | * @property: property name containing phandle on TISCI node |
| 3032 | * |
| 3033 | * NOTE: This releases the handle once the device resources are |
| 3034 | * no longer needed. MUST NOT BE released with ti_sci_put_handle. |
| 3035 | * The function does not track individual clients of the framework |
| 3036 | * and is expected to be maintained by caller of TI SCI protocol library. |
| 3037 | * |
| 3038 | * Return: 0 if all went fine, else corresponding error. |
| 3039 | */ |
| 3040 | const struct ti_sci_handle *devm_ti_sci_get_by_phandle(struct device *dev, |
| 3041 | const char *property) |
| 3042 | { |
| 3043 | const struct ti_sci_handle *handle; |
| 3044 | const struct ti_sci_handle **ptr; |
| 3045 | |
| 3046 | ptr = devres_alloc(devm_ti_sci_release, sizeof(*ptr), GFP_KERNEL); |
| 3047 | if (!ptr) |
| 3048 | return ERR_PTR(-ENOMEM); |
| 3049 | handle = ti_sci_get_by_phandle(dev_of_node(dev), property); |
| 3050 | |
| 3051 | if (!IS_ERR(handle)) { |
| 3052 | *ptr = handle; |
| 3053 | devres_add(dev, ptr); |
| 3054 | } else { |
| 3055 | devres_free(ptr); |
| 3056 | } |
| 3057 | |
| 3058 | return handle; |
| 3059 | } |
| 3060 | EXPORT_SYMBOL_GPL(devm_ti_sci_get_by_phandle); |
| 3061 | |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3062 | /** |
| 3063 | * ti_sci_get_free_resource() - Get a free resource from TISCI resource. |
| 3064 | * @res: Pointer to the TISCI resource |
| 3065 | * |
| 3066 | * Return: resource num if all went ok else TI_SCI_RESOURCE_NULL. |
| 3067 | */ |
| 3068 | u16 ti_sci_get_free_resource(struct ti_sci_resource *res) |
| 3069 | { |
| 3070 | unsigned long flags; |
| 3071 | u16 set, free_bit; |
| 3072 | |
| 3073 | raw_spin_lock_irqsave(&res->lock, flags); |
| 3074 | for (set = 0; set < res->sets; set++) { |
Peter Ujfalusi | 519c5c0 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 3075 | struct ti_sci_resource_desc *desc = &res->desc[set]; |
| 3076 | int res_count = desc->num + desc->num_sec; |
| 3077 | |
| 3078 | free_bit = find_first_zero_bit(desc->res_map, res_count); |
| 3079 | if (free_bit != res_count) { |
Christophe JAILLET | 4dc3883 | 2022-07-08 21:23:56 +0200 | [diff] [blame] | 3080 | __set_bit(free_bit, desc->res_map); |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3081 | raw_spin_unlock_irqrestore(&res->lock, flags); |
Peter Ujfalusi | 519c5c0 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 3082 | |
| 3083 | if (desc->num && free_bit < desc->num) |
| 3084 | return desc->start + free_bit; |
| 3085 | else |
| 3086 | return desc->start_sec + free_bit; |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3087 | } |
| 3088 | } |
| 3089 | raw_spin_unlock_irqrestore(&res->lock, flags); |
| 3090 | |
| 3091 | return TI_SCI_RESOURCE_NULL; |
| 3092 | } |
| 3093 | EXPORT_SYMBOL_GPL(ti_sci_get_free_resource); |
| 3094 | |
| 3095 | /** |
| 3096 | * ti_sci_release_resource() - Release a resource from TISCI resource. |
| 3097 | * @res: Pointer to the TISCI resource |
| 3098 | * @id: Resource id to be released. |
| 3099 | */ |
| 3100 | void ti_sci_release_resource(struct ti_sci_resource *res, u16 id) |
| 3101 | { |
| 3102 | unsigned long flags; |
| 3103 | u16 set; |
| 3104 | |
| 3105 | raw_spin_lock_irqsave(&res->lock, flags); |
| 3106 | for (set = 0; set < res->sets; set++) { |
Peter Ujfalusi | 519c5c0 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 3107 | struct ti_sci_resource_desc *desc = &res->desc[set]; |
| 3108 | |
| 3109 | if (desc->num && desc->start <= id && |
| 3110 | (desc->start + desc->num) > id) |
Christophe JAILLET | 4dc3883 | 2022-07-08 21:23:56 +0200 | [diff] [blame] | 3111 | __clear_bit(id - desc->start, desc->res_map); |
Peter Ujfalusi | 519c5c0 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 3112 | else if (desc->num_sec && desc->start_sec <= id && |
| 3113 | (desc->start_sec + desc->num_sec) > id) |
Christophe JAILLET | 4dc3883 | 2022-07-08 21:23:56 +0200 | [diff] [blame] | 3114 | __clear_bit(id - desc->start_sec, desc->res_map); |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3115 | } |
| 3116 | raw_spin_unlock_irqrestore(&res->lock, flags); |
| 3117 | } |
| 3118 | EXPORT_SYMBOL_GPL(ti_sci_release_resource); |
| 3119 | |
| 3120 | /** |
| 3121 | * ti_sci_get_num_resources() - Get the number of resources in TISCI resource |
| 3122 | * @res: Pointer to the TISCI resource |
| 3123 | * |
| 3124 | * Return: Total number of available resources. |
| 3125 | */ |
| 3126 | u32 ti_sci_get_num_resources(struct ti_sci_resource *res) |
| 3127 | { |
| 3128 | u32 set, count = 0; |
| 3129 | |
| 3130 | for (set = 0; set < res->sets; set++) |
Peter Ujfalusi | 519c5c0 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 3131 | count += res->desc[set].num + res->desc[set].num_sec; |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3132 | |
| 3133 | return count; |
| 3134 | } |
| 3135 | EXPORT_SYMBOL_GPL(ti_sci_get_num_resources); |
| 3136 | |
| 3137 | /** |
Lokesh Vutla | 53bf2b0 | 2020-08-06 13:18:16 +0530 | [diff] [blame] | 3138 | * devm_ti_sci_get_resource_sets() - Get a TISCI resources assigned to a device |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3139 | * @handle: TISCI handle |
| 3140 | * @dev: Device pointer to which the resource is assigned |
| 3141 | * @dev_id: TISCI device id to which the resource is assigned |
Lokesh Vutla | 53bf2b0 | 2020-08-06 13:18:16 +0530 | [diff] [blame] | 3142 | * @sub_types: Array of sub_types assigned corresponding to device |
| 3143 | * @sets: Number of sub_types |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3144 | * |
| 3145 | * Return: Pointer to ti_sci_resource if all went well else appropriate |
| 3146 | * error pointer. |
| 3147 | */ |
Lokesh Vutla | 53bf2b0 | 2020-08-06 13:18:16 +0530 | [diff] [blame] | 3148 | static struct ti_sci_resource * |
| 3149 | devm_ti_sci_get_resource_sets(const struct ti_sci_handle *handle, |
| 3150 | struct device *dev, u32 dev_id, u32 *sub_types, |
| 3151 | u32 sets) |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3152 | { |
| 3153 | struct ti_sci_resource *res; |
Peter Ujfalusi | fa42da11 | 2019-06-06 15:13:57 +0300 | [diff] [blame] | 3154 | bool valid_set = false; |
Peter Ujfalusi | 519c5c0 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 3155 | int i, ret, res_count; |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3156 | |
| 3157 | res = devm_kzalloc(dev, sizeof(*res), GFP_KERNEL); |
| 3158 | if (!res) |
| 3159 | return ERR_PTR(-ENOMEM); |
| 3160 | |
Lokesh Vutla | 53bf2b0 | 2020-08-06 13:18:16 +0530 | [diff] [blame] | 3161 | res->sets = sets; |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3162 | res->desc = devm_kcalloc(dev, res->sets, sizeof(*res->desc), |
| 3163 | GFP_KERNEL); |
| 3164 | if (!res->desc) |
| 3165 | return ERR_PTR(-ENOMEM); |
| 3166 | |
| 3167 | for (i = 0; i < res->sets; i++) { |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3168 | ret = handle->ops.rm_core_ops.get_range(handle, dev_id, |
Lokesh Vutla | 53bf2b0 | 2020-08-06 13:18:16 +0530 | [diff] [blame] | 3169 | sub_types[i], |
Peter Ujfalusi | 967a020 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 3170 | &res->desc[i]); |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3171 | if (ret) { |
Peter Ujfalusi | fa42da11 | 2019-06-06 15:13:57 +0300 | [diff] [blame] | 3172 | dev_dbg(dev, "dev = %d subtype %d not allocated for this host\n", |
Lokesh Vutla | 53bf2b0 | 2020-08-06 13:18:16 +0530 | [diff] [blame] | 3173 | dev_id, sub_types[i]); |
Peter Ujfalusi | 519c5c0 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 3174 | memset(&res->desc[i], 0, sizeof(res->desc[i])); |
Peter Ujfalusi | fa42da11 | 2019-06-06 15:13:57 +0300 | [diff] [blame] | 3175 | continue; |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3176 | } |
| 3177 | |
Peter Ujfalusi | 519c5c0 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 3178 | dev_dbg(dev, "dev/sub_type: %d/%d, start/num: %d/%d | %d/%d\n", |
Lokesh Vutla | 53bf2b0 | 2020-08-06 13:18:16 +0530 | [diff] [blame] | 3179 | dev_id, sub_types[i], res->desc[i].start, |
Peter Ujfalusi | 519c5c0 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 3180 | res->desc[i].num, res->desc[i].start_sec, |
| 3181 | res->desc[i].num_sec); |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3182 | |
Peter Ujfalusi | fa42da11 | 2019-06-06 15:13:57 +0300 | [diff] [blame] | 3183 | valid_set = true; |
Peter Ujfalusi | 519c5c0 | 2020-10-25 12:10:03 -0700 | [diff] [blame] | 3184 | res_count = res->desc[i].num + res->desc[i].num_sec; |
Christophe JAILLET | 2f9b040 | 2022-07-08 21:23:46 +0200 | [diff] [blame] | 3185 | res->desc[i].res_map = devm_bitmap_zalloc(dev, res_count, |
| 3186 | GFP_KERNEL); |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3187 | if (!res->desc[i].res_map) |
| 3188 | return ERR_PTR(-ENOMEM); |
| 3189 | } |
| 3190 | raw_spin_lock_init(&res->lock); |
| 3191 | |
Peter Ujfalusi | fa42da11 | 2019-06-06 15:13:57 +0300 | [diff] [blame] | 3192 | if (valid_set) |
| 3193 | return res; |
| 3194 | |
| 3195 | return ERR_PTR(-EINVAL); |
Lokesh Vutla | 032a1ec5 | 2019-04-30 15:42:21 +0530 | [diff] [blame] | 3196 | } |
| 3197 | |
Lokesh Vutla | 53bf2b0 | 2020-08-06 13:18:16 +0530 | [diff] [blame] | 3198 | /** |
| 3199 | * devm_ti_sci_get_of_resource() - Get a TISCI resource assigned to a device |
| 3200 | * @handle: TISCI handle |
| 3201 | * @dev: Device pointer to which the resource is assigned |
| 3202 | * @dev_id: TISCI device id to which the resource is assigned |
| 3203 | * @of_prop: property name by which the resource are represented |
| 3204 | * |
| 3205 | * Return: Pointer to ti_sci_resource if all went well else appropriate |
| 3206 | * error pointer. |
| 3207 | */ |
| 3208 | struct ti_sci_resource * |
| 3209 | devm_ti_sci_get_of_resource(const struct ti_sci_handle *handle, |
| 3210 | struct device *dev, u32 dev_id, char *of_prop) |
| 3211 | { |
| 3212 | struct ti_sci_resource *res; |
| 3213 | u32 *sub_types; |
| 3214 | int sets; |
| 3215 | |
| 3216 | sets = of_property_count_elems_of_size(dev_of_node(dev), of_prop, |
| 3217 | sizeof(u32)); |
| 3218 | if (sets < 0) { |
| 3219 | dev_err(dev, "%s resource type ids not available\n", of_prop); |
| 3220 | return ERR_PTR(sets); |
| 3221 | } |
| 3222 | |
| 3223 | sub_types = kcalloc(sets, sizeof(*sub_types), GFP_KERNEL); |
| 3224 | if (!sub_types) |
| 3225 | return ERR_PTR(-ENOMEM); |
| 3226 | |
| 3227 | of_property_read_u32_array(dev_of_node(dev), of_prop, sub_types, sets); |
| 3228 | res = devm_ti_sci_get_resource_sets(handle, dev, dev_id, sub_types, |
| 3229 | sets); |
| 3230 | |
| 3231 | kfree(sub_types); |
| 3232 | return res; |
| 3233 | } |
| 3234 | EXPORT_SYMBOL_GPL(devm_ti_sci_get_of_resource); |
| 3235 | |
| 3236 | /** |
| 3237 | * devm_ti_sci_get_resource() - Get a resource range assigned to the device |
| 3238 | * @handle: TISCI handle |
| 3239 | * @dev: Device pointer to which the resource is assigned |
| 3240 | * @dev_id: TISCI device id to which the resource is assigned |
Nishanth Menon | 3e67fd8 | 2023-06-20 21:16:19 -0500 | [diff] [blame] | 3241 | * @sub_type: TISCI resource subytpe representing the resource. |
Lokesh Vutla | 53bf2b0 | 2020-08-06 13:18:16 +0530 | [diff] [blame] | 3242 | * |
| 3243 | * Return: Pointer to ti_sci_resource if all went well else appropriate |
| 3244 | * error pointer. |
| 3245 | */ |
| 3246 | struct ti_sci_resource * |
| 3247 | devm_ti_sci_get_resource(const struct ti_sci_handle *handle, struct device *dev, |
| 3248 | u32 dev_id, u32 sub_type) |
| 3249 | { |
| 3250 | return devm_ti_sci_get_resource_sets(handle, dev, dev_id, &sub_type, 1); |
| 3251 | } |
| 3252 | EXPORT_SYMBOL_GPL(devm_ti_sci_get_resource); |
| 3253 | |
Andrew Davis | c0e5a43 | 2024-03-26 17:37:27 -0500 | [diff] [blame] | 3254 | static int tisci_reboot_handler(struct sys_off_data *data) |
Nishanth Menon | 912cffb | 2016-10-18 18:08:37 -0500 | [diff] [blame] | 3255 | { |
Andrew Davis | c0e5a43 | 2024-03-26 17:37:27 -0500 | [diff] [blame] | 3256 | struct ti_sci_info *info = data->cb_data; |
Nishanth Menon | 912cffb | 2016-10-18 18:08:37 -0500 | [diff] [blame] | 3257 | const struct ti_sci_handle *handle = &info->handle; |
| 3258 | |
| 3259 | ti_sci_cmd_core_reboot(handle); |
| 3260 | |
| 3261 | /* call fail OR pass, we should not be here in the first place */ |
| 3262 | return NOTIFY_BAD; |
| 3263 | } |
| 3264 | |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 3265 | /* Description for K2G */ |
| 3266 | static const struct ti_sci_desc ti_sci_pmmc_k2g_desc = { |
Nishanth Menon | e69a355 | 2018-08-28 13:22:13 -0700 | [diff] [blame] | 3267 | .default_host_id = 2, |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 3268 | /* Conservative duration */ |
| 3269 | .max_rx_timeout_ms = 1000, |
| 3270 | /* Limited by MBOX_TX_QUEUE_LEN. K2G can handle upto 128 messages! */ |
| 3271 | .max_msgs = 20, |
| 3272 | .max_msg_size = 64, |
Peter Ujfalusi | 754c947 | 2019-04-30 15:42:20 +0530 | [diff] [blame] | 3273 | }; |
| 3274 | |
Peter Ujfalusi | 754c947 | 2019-04-30 15:42:20 +0530 | [diff] [blame] | 3275 | /* Description for AM654 */ |
| 3276 | static const struct ti_sci_desc ti_sci_pmmc_am654_desc = { |
| 3277 | .default_host_id = 12, |
| 3278 | /* Conservative duration */ |
| 3279 | .max_rx_timeout_ms = 10000, |
| 3280 | /* Limited by MBOX_TX_QUEUE_LEN. K2G can handle upto 128 messages! */ |
| 3281 | .max_msgs = 20, |
| 3282 | .max_msg_size = 60, |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 3283 | }; |
| 3284 | |
| 3285 | static const struct of_device_id ti_sci_of_match[] = { |
| 3286 | {.compatible = "ti,k2g-sci", .data = &ti_sci_pmmc_k2g_desc}, |
Peter Ujfalusi | 754c947 | 2019-04-30 15:42:20 +0530 | [diff] [blame] | 3287 | {.compatible = "ti,am654-sci", .data = &ti_sci_pmmc_am654_desc}, |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 3288 | { /* Sentinel */ }, |
| 3289 | }; |
| 3290 | MODULE_DEVICE_TABLE(of, ti_sci_of_match); |
| 3291 | |
| 3292 | static int ti_sci_probe(struct platform_device *pdev) |
| 3293 | { |
| 3294 | struct device *dev = &pdev->dev; |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 3295 | const struct ti_sci_desc *desc; |
| 3296 | struct ti_sci_xfer *xfer; |
| 3297 | struct ti_sci_info *info = NULL; |
| 3298 | struct ti_sci_xfers_info *minfo; |
| 3299 | struct mbox_client *cl; |
| 3300 | int ret = -EINVAL; |
| 3301 | int i; |
Nishanth Menon | e69a355 | 2018-08-28 13:22:13 -0700 | [diff] [blame] | 3302 | u32 h_id; |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 3303 | |
Rob Herring | 05e5f73 | 2023-10-06 17:46:38 -0500 | [diff] [blame] | 3304 | desc = device_get_match_data(dev); |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 3305 | |
| 3306 | info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); |
| 3307 | if (!info) |
| 3308 | return -ENOMEM; |
| 3309 | |
| 3310 | info->dev = dev; |
| 3311 | info->desc = desc; |
Nishanth Menon | e69a355 | 2018-08-28 13:22:13 -0700 | [diff] [blame] | 3312 | ret = of_property_read_u32(dev->of_node, "ti,host-id", &h_id); |
| 3313 | /* if the property is not present in DT, use a default from desc */ |
| 3314 | if (ret < 0) { |
| 3315 | info->host_id = info->desc->default_host_id; |
| 3316 | } else { |
| 3317 | if (!h_id) { |
| 3318 | dev_warn(dev, "Host ID 0 is reserved for firmware\n"); |
| 3319 | info->host_id = info->desc->default_host_id; |
| 3320 | } else { |
| 3321 | info->host_id = h_id; |
| 3322 | } |
| 3323 | } |
| 3324 | |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 3325 | INIT_LIST_HEAD(&info->node); |
| 3326 | minfo = &info->minfo; |
| 3327 | |
| 3328 | /* |
| 3329 | * Pre-allocate messages |
| 3330 | * NEVER allocate more than what we can indicate in hdr.seq |
| 3331 | * if we have data description bug, force a fix.. |
| 3332 | */ |
| 3333 | if (WARN_ON(desc->max_msgs >= |
| 3334 | 1 << 8 * sizeof(((struct ti_sci_msg_hdr *)0)->seq))) |
| 3335 | return -EINVAL; |
| 3336 | |
| 3337 | minfo->xfer_block = devm_kcalloc(dev, |
| 3338 | desc->max_msgs, |
| 3339 | sizeof(*minfo->xfer_block), |
| 3340 | GFP_KERNEL); |
| 3341 | if (!minfo->xfer_block) |
| 3342 | return -ENOMEM; |
| 3343 | |
Christophe JAILLET | 26507b03 | 2022-11-03 07:41:30 +0100 | [diff] [blame] | 3344 | minfo->xfer_alloc_table = devm_bitmap_zalloc(dev, |
| 3345 | desc->max_msgs, |
| 3346 | GFP_KERNEL); |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 3347 | if (!minfo->xfer_alloc_table) |
| 3348 | return -ENOMEM; |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 3349 | |
| 3350 | /* Pre-initialize the buffer pointer to pre-allocated buffers */ |
| 3351 | for (i = 0, xfer = minfo->xfer_block; i < desc->max_msgs; i++, xfer++) { |
| 3352 | xfer->xfer_buf = devm_kcalloc(dev, 1, desc->max_msg_size, |
| 3353 | GFP_KERNEL); |
| 3354 | if (!xfer->xfer_buf) |
| 3355 | return -ENOMEM; |
| 3356 | |
| 3357 | xfer->tx_message.buf = xfer->xfer_buf; |
| 3358 | init_completion(&xfer->done); |
| 3359 | } |
| 3360 | |
| 3361 | ret = ti_sci_debugfs_create(pdev, info); |
| 3362 | if (ret) |
| 3363 | dev_warn(dev, "Failed to create debug file\n"); |
| 3364 | |
| 3365 | platform_set_drvdata(pdev, info); |
| 3366 | |
| 3367 | cl = &info->cl; |
| 3368 | cl->dev = dev; |
| 3369 | cl->tx_block = false; |
| 3370 | cl->rx_callback = ti_sci_rx_callback; |
| 3371 | cl->knows_txdone = true; |
| 3372 | |
| 3373 | spin_lock_init(&minfo->xfer_lock); |
| 3374 | sema_init(&minfo->sem_xfer_count, desc->max_msgs); |
| 3375 | |
| 3376 | info->chan_rx = mbox_request_channel_byname(cl, "rx"); |
| 3377 | if (IS_ERR(info->chan_rx)) { |
| 3378 | ret = PTR_ERR(info->chan_rx); |
| 3379 | goto out; |
| 3380 | } |
| 3381 | |
| 3382 | info->chan_tx = mbox_request_channel_byname(cl, "tx"); |
| 3383 | if (IS_ERR(info->chan_tx)) { |
| 3384 | ret = PTR_ERR(info->chan_tx); |
| 3385 | goto out; |
| 3386 | } |
| 3387 | ret = ti_sci_cmd_get_revision(info); |
| 3388 | if (ret) { |
| 3389 | dev_err(dev, "Unable to communicate with TISCI(%d)\n", ret); |
| 3390 | goto out; |
| 3391 | } |
| 3392 | |
Nishanth Menon | 9e7d756 | 2016-10-18 18:08:35 -0500 | [diff] [blame] | 3393 | ti_sci_setup_ops(info); |
| 3394 | |
Andrew Davis | 8c8ff398 | 2024-03-26 17:37:28 -0500 | [diff] [blame] | 3395 | ret = devm_register_restart_handler(dev, tisci_reboot_handler, info); |
| 3396 | if (ret) { |
| 3397 | dev_err(dev, "reboot registration fail(%d)\n", ret); |
| 3398 | goto out; |
Nishanth Menon | 912cffb | 2016-10-18 18:08:37 -0500 | [diff] [blame] | 3399 | } |
| 3400 | |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 3401 | dev_info(dev, "ABI: %d.%d (firmware rev 0x%04x '%s')\n", |
| 3402 | info->handle.version.abi_major, info->handle.version.abi_minor, |
| 3403 | info->handle.version.firmware_revision, |
| 3404 | info->handle.version.firmware_description); |
| 3405 | |
| 3406 | mutex_lock(&ti_sci_list_mutex); |
| 3407 | list_add_tail(&info->node, &ti_sci_list); |
| 3408 | mutex_unlock(&ti_sci_list_mutex); |
| 3409 | |
| 3410 | return of_platform_populate(dev->of_node, NULL, NULL, dev); |
| 3411 | out: |
| 3412 | if (!IS_ERR(info->chan_tx)) |
| 3413 | mbox_free_channel(info->chan_tx); |
| 3414 | if (!IS_ERR(info->chan_rx)) |
| 3415 | mbox_free_channel(info->chan_rx); |
| 3416 | debugfs_remove(info->d); |
| 3417 | return ret; |
| 3418 | } |
| 3419 | |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 3420 | static struct platform_driver ti_sci_driver = { |
| 3421 | .probe = ti_sci_probe, |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 3422 | .driver = { |
| 3423 | .name = "ti-sci", |
| 3424 | .of_match_table = of_match_ptr(ti_sci_of_match), |
Dhruva Gole | 7b7a224 | 2023-09-21 14:40:26 +0530 | [diff] [blame] | 3425 | .suppress_bind_attrs = true, |
Nishanth Menon | aa27678 | 2016-10-18 18:08:34 -0500 | [diff] [blame] | 3426 | }, |
| 3427 | }; |
| 3428 | module_platform_driver(ti_sci_driver); |
| 3429 | |
| 3430 | MODULE_LICENSE("GPL v2"); |
| 3431 | MODULE_DESCRIPTION("TI System Control Interface(SCI) driver"); |
| 3432 | MODULE_AUTHOR("Nishanth Menon"); |
| 3433 | MODULE_ALIAS("platform:ti-sci"); |