dm thin metadata: fix __udivdi3 undefined on 32-bit
[linux/fpc-iii.git] / drivers / nfc / nfcmrvl / fw_dnld.c
blobb4f31dad40d6ef842916152f502d6202bede35d0
1 /*
2 * Marvell NFC driver: Firmware downloader
4 * Copyright (C) 2015, Marvell International Ltd.
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available on the worldwide web at
11 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
14 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
15 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
16 * this warranty disclaimer.
19 #include <linux/module.h>
20 #include <asm/unaligned.h>
21 #include <linux/firmware.h>
22 #include <linux/nfc.h>
23 #include <net/nfc/nci.h>
24 #include <net/nfc/nci_core.h>
25 #include "nfcmrvl.h"
27 #define FW_DNLD_TIMEOUT 15000
29 #define NCI_OP_PROPRIETARY_BOOT_CMD nci_opcode_pack(NCI_GID_PROPRIETARY, \
30 NCI_OP_PROP_BOOT_CMD)
32 /* FW download states */
34 enum {
35 STATE_RESET = 0,
36 STATE_INIT,
37 STATE_SET_REF_CLOCK,
38 STATE_SET_HI_CONFIG,
39 STATE_OPEN_LC,
40 STATE_FW_DNLD,
41 STATE_CLOSE_LC,
42 STATE_BOOT
45 enum {
46 SUBSTATE_WAIT_COMMAND = 0,
47 SUBSTATE_WAIT_ACK_CREDIT,
48 SUBSTATE_WAIT_NACK_CREDIT,
49 SUBSTATE_WAIT_DATA_CREDIT,
53 ** Patterns for responses
56 static const uint8_t nci_pattern_core_reset_ntf[] = {
57 0x60, 0x00, 0x02, 0xA0, 0x01
60 static const uint8_t nci_pattern_core_init_rsp[] = {
61 0x40, 0x01, 0x11
64 static const uint8_t nci_pattern_core_set_config_rsp[] = {
65 0x40, 0x02, 0x02, 0x00, 0x00
68 static const uint8_t nci_pattern_core_conn_create_rsp[] = {
69 0x40, 0x04, 0x04, 0x00
72 static const uint8_t nci_pattern_core_conn_close_rsp[] = {
73 0x40, 0x05, 0x01, 0x00
76 static const uint8_t nci_pattern_core_conn_credits_ntf[] = {
77 0x60, 0x06, 0x03, 0x01, NCI_CORE_LC_CONNID_PROP_FW_DL, 0x01
80 static const uint8_t nci_pattern_proprietary_boot_rsp[] = {
81 0x4F, 0x3A, 0x01, 0x00
84 static struct sk_buff *alloc_lc_skb(struct nfcmrvl_private *priv, uint8_t plen)
86 struct sk_buff *skb;
87 struct nci_data_hdr *hdr;
89 skb = nci_skb_alloc(priv->ndev, (NCI_DATA_HDR_SIZE + plen), GFP_KERNEL);
90 if (!skb) {
91 pr_err("no memory for data\n");
92 return NULL;
95 hdr = (struct nci_data_hdr *) skb_put(skb, NCI_DATA_HDR_SIZE);
96 hdr->conn_id = NCI_CORE_LC_CONNID_PROP_FW_DL;
97 hdr->rfu = 0;
98 hdr->plen = plen;
100 nci_mt_set((__u8 *)hdr, NCI_MT_DATA_PKT);
101 nci_pbf_set((__u8 *)hdr, NCI_PBF_LAST);
103 return skb;
106 static void fw_dnld_over(struct nfcmrvl_private *priv, u32 error)
108 if (priv->fw_dnld.fw) {
109 release_firmware(priv->fw_dnld.fw);
110 priv->fw_dnld.fw = NULL;
111 priv->fw_dnld.header = NULL;
112 priv->fw_dnld.binary_config = NULL;
115 atomic_set(&priv->ndev->cmd_cnt, 0);
117 if (timer_pending(&priv->ndev->cmd_timer))
118 del_timer_sync(&priv->ndev->cmd_timer);
120 if (timer_pending(&priv->fw_dnld.timer))
121 del_timer_sync(&priv->fw_dnld.timer);
123 nfc_info(priv->dev, "FW loading over (%d)]\n", error);
125 if (error != 0) {
126 /* failed, halt the chip to avoid power consumption */
127 nfcmrvl_chip_halt(priv);
130 nfc_fw_download_done(priv->ndev->nfc_dev, priv->fw_dnld.name, error);
133 static void fw_dnld_timeout(unsigned long arg)
135 struct nfcmrvl_private *priv = (struct nfcmrvl_private *) arg;
137 nfc_err(priv->dev, "FW loading timeout");
138 priv->fw_dnld.state = STATE_RESET;
139 fw_dnld_over(priv, -ETIMEDOUT);
142 static int process_state_reset(struct nfcmrvl_private *priv,
143 struct sk_buff *skb)
145 if (sizeof(nci_pattern_core_reset_ntf) != skb->len ||
146 memcmp(skb->data, nci_pattern_core_reset_ntf,
147 sizeof(nci_pattern_core_reset_ntf)))
148 return -EINVAL;
150 nfc_info(priv->dev, "BootROM reset, start fw download\n");
152 /* Start FW download state machine */
153 priv->fw_dnld.state = STATE_INIT;
154 nci_send_cmd(priv->ndev, NCI_OP_CORE_INIT_CMD, 0, NULL);
156 return 0;
159 static int process_state_init(struct nfcmrvl_private *priv, struct sk_buff *skb)
161 struct nci_core_set_config_cmd cmd;
163 if (sizeof(nci_pattern_core_init_rsp) >= skb->len ||
164 memcmp(skb->data, nci_pattern_core_init_rsp,
165 sizeof(nci_pattern_core_init_rsp)))
166 return -EINVAL;
168 cmd.num_params = 1;
169 cmd.param.id = NFCMRVL_PROP_REF_CLOCK;
170 cmd.param.len = 4;
171 memcpy(cmd.param.val, &priv->fw_dnld.header->ref_clock, 4);
173 nci_send_cmd(priv->ndev, NCI_OP_CORE_SET_CONFIG_CMD, 3 + cmd.param.len,
174 &cmd);
176 priv->fw_dnld.state = STATE_SET_REF_CLOCK;
177 return 0;
180 static void create_lc(struct nfcmrvl_private *priv)
182 uint8_t param[2] = { NCI_CORE_LC_PROP_FW_DL, 0x0 };
184 priv->fw_dnld.state = STATE_OPEN_LC;
185 nci_send_cmd(priv->ndev, NCI_OP_CORE_CONN_CREATE_CMD, 2, param);
188 static int process_state_set_ref_clock(struct nfcmrvl_private *priv,
189 struct sk_buff *skb)
191 struct nci_core_set_config_cmd cmd;
193 if (sizeof(nci_pattern_core_set_config_rsp) != skb->len ||
194 memcmp(skb->data, nci_pattern_core_set_config_rsp, skb->len))
195 return -EINVAL;
197 cmd.num_params = 1;
198 cmd.param.id = NFCMRVL_PROP_SET_HI_CONFIG;
200 switch (priv->phy) {
201 case NFCMRVL_PHY_UART:
202 cmd.param.len = 5;
203 memcpy(cmd.param.val,
204 &priv->fw_dnld.binary_config->uart.baudrate,
206 cmd.param.val[4] =
207 priv->fw_dnld.binary_config->uart.flow_control;
208 break;
209 case NFCMRVL_PHY_I2C:
210 cmd.param.len = 5;
211 memcpy(cmd.param.val,
212 &priv->fw_dnld.binary_config->i2c.clk,
214 cmd.param.val[4] = 0;
215 break;
216 case NFCMRVL_PHY_SPI:
217 cmd.param.len = 5;
218 memcpy(cmd.param.val,
219 &priv->fw_dnld.binary_config->spi.clk,
221 cmd.param.val[4] = 0;
222 break;
223 default:
224 create_lc(priv);
225 return 0;
228 priv->fw_dnld.state = STATE_SET_HI_CONFIG;
229 nci_send_cmd(priv->ndev, NCI_OP_CORE_SET_CONFIG_CMD, 3 + cmd.param.len,
230 &cmd);
231 return 0;
234 static int process_state_set_hi_config(struct nfcmrvl_private *priv,
235 struct sk_buff *skb)
237 if (sizeof(nci_pattern_core_set_config_rsp) != skb->len ||
238 memcmp(skb->data, nci_pattern_core_set_config_rsp, skb->len))
239 return -EINVAL;
241 create_lc(priv);
242 return 0;
245 static int process_state_open_lc(struct nfcmrvl_private *priv,
246 struct sk_buff *skb)
248 if (sizeof(nci_pattern_core_conn_create_rsp) >= skb->len ||
249 memcmp(skb->data, nci_pattern_core_conn_create_rsp,
250 sizeof(nci_pattern_core_conn_create_rsp)))
251 return -EINVAL;
253 priv->fw_dnld.state = STATE_FW_DNLD;
254 priv->fw_dnld.substate = SUBSTATE_WAIT_COMMAND;
255 priv->fw_dnld.offset = priv->fw_dnld.binary_config->offset;
256 return 0;
259 static int process_state_fw_dnld(struct nfcmrvl_private *priv,
260 struct sk_buff *skb)
262 uint16_t len;
263 uint16_t comp_len;
264 struct sk_buff *out_skb;
266 switch (priv->fw_dnld.substate) {
267 case SUBSTATE_WAIT_COMMAND:
269 * Command format:
270 * B0..2: NCI header
271 * B3 : Helper command (0xA5)
272 * B4..5: le16 data size
273 * B6..7: le16 data size complement (~)
274 * B8..N: payload
277 /* Remove NCI HDR */
278 skb_pull(skb, 3);
279 if (skb->data[0] != HELPER_CMD_PACKET_FORMAT || skb->len != 5) {
280 nfc_err(priv->dev, "bad command");
281 return -EINVAL;
283 skb_pull(skb, 1);
284 memcpy(&len, skb->data, 2);
285 skb_pull(skb, 2);
286 memcpy(&comp_len, skb->data, 2);
287 skb_pull(skb, 2);
288 len = get_unaligned_le16(&len);
289 comp_len = get_unaligned_le16(&comp_len);
290 if (((~len) & 0xFFFF) != comp_len) {
291 nfc_err(priv->dev, "bad len complement: %x %x %x",
292 len, comp_len, (~len & 0xFFFF));
293 out_skb = alloc_lc_skb(priv, 1);
294 if (!out_skb)
295 return -ENOMEM;
296 *skb_put(out_skb, 1) = 0xBF;
297 nci_send_frame(priv->ndev, out_skb);
298 priv->fw_dnld.substate = SUBSTATE_WAIT_NACK_CREDIT;
299 return 0;
301 priv->fw_dnld.chunk_len = len;
302 out_skb = alloc_lc_skb(priv, 1);
303 if (!out_skb)
304 return -ENOMEM;
305 *skb_put(out_skb, 1) = HELPER_ACK_PACKET_FORMAT;
306 nci_send_frame(priv->ndev, out_skb);
307 priv->fw_dnld.substate = SUBSTATE_WAIT_ACK_CREDIT;
308 break;
310 case SUBSTATE_WAIT_ACK_CREDIT:
311 if (sizeof(nci_pattern_core_conn_credits_ntf) != skb->len ||
312 memcmp(nci_pattern_core_conn_credits_ntf, skb->data,
313 skb->len)) {
314 nfc_err(priv->dev, "bad packet: waiting for credit");
315 return -EINVAL;
317 if (priv->fw_dnld.chunk_len == 0) {
318 /* FW Loading is done */
319 uint8_t conn_id = NCI_CORE_LC_CONNID_PROP_FW_DL;
321 priv->fw_dnld.state = STATE_CLOSE_LC;
322 nci_send_cmd(priv->ndev, NCI_OP_CORE_CONN_CLOSE_CMD,
323 1, &conn_id);
324 } else {
325 out_skb = alloc_lc_skb(priv, priv->fw_dnld.chunk_len);
326 if (!out_skb)
327 return -ENOMEM;
328 memcpy(skb_put(out_skb, priv->fw_dnld.chunk_len),
329 ((uint8_t *)priv->fw_dnld.fw->data) +
330 priv->fw_dnld.offset,
331 priv->fw_dnld.chunk_len);
332 nci_send_frame(priv->ndev, out_skb);
333 priv->fw_dnld.substate = SUBSTATE_WAIT_DATA_CREDIT;
335 break;
337 case SUBSTATE_WAIT_DATA_CREDIT:
338 if (sizeof(nci_pattern_core_conn_credits_ntf) != skb->len ||
339 memcmp(nci_pattern_core_conn_credits_ntf, skb->data,
340 skb->len)) {
341 nfc_err(priv->dev, "bad packet: waiting for credit");
342 return -EINVAL;
344 priv->fw_dnld.offset += priv->fw_dnld.chunk_len;
345 priv->fw_dnld.chunk_len = 0;
346 priv->fw_dnld.substate = SUBSTATE_WAIT_COMMAND;
347 break;
349 case SUBSTATE_WAIT_NACK_CREDIT:
350 if (sizeof(nci_pattern_core_conn_credits_ntf) != skb->len ||
351 memcmp(nci_pattern_core_conn_credits_ntf, skb->data,
352 skb->len)) {
353 nfc_err(priv->dev, "bad packet: waiting for credit");
354 return -EINVAL;
356 priv->fw_dnld.substate = SUBSTATE_WAIT_COMMAND;
357 break;
359 return 0;
362 static int process_state_close_lc(struct nfcmrvl_private *priv,
363 struct sk_buff *skb)
365 if (sizeof(nci_pattern_core_conn_close_rsp) != skb->len ||
366 memcmp(skb->data, nci_pattern_core_conn_close_rsp, skb->len))
367 return -EINVAL;
369 priv->fw_dnld.state = STATE_BOOT;
370 nci_send_cmd(priv->ndev, NCI_OP_PROPRIETARY_BOOT_CMD, 0, NULL);
371 return 0;
374 static int process_state_boot(struct nfcmrvl_private *priv, struct sk_buff *skb)
376 if (sizeof(nci_pattern_proprietary_boot_rsp) != skb->len ||
377 memcmp(skb->data, nci_pattern_proprietary_boot_rsp, skb->len))
378 return -EINVAL;
381 * Update HI config to use the right configuration for the next
382 * data exchanges.
384 priv->if_ops->nci_update_config(priv,
385 &priv->fw_dnld.binary_config->config);
387 if (priv->fw_dnld.binary_config == &priv->fw_dnld.header->helper) {
389 * This is the case where an helper was needed and we have
390 * uploaded it. Now we have to wait the next RESET NTF to start
391 * FW download.
393 priv->fw_dnld.state = STATE_RESET;
394 priv->fw_dnld.binary_config = &priv->fw_dnld.header->firmware;
395 nfc_info(priv->dev, "FW loading: helper loaded");
396 } else {
397 nfc_info(priv->dev, "FW loading: firmware loaded");
398 fw_dnld_over(priv, 0);
400 return 0;
403 static void fw_dnld_rx_work(struct work_struct *work)
405 int ret;
406 struct sk_buff *skb;
407 struct nfcmrvl_fw_dnld *fw_dnld = container_of(work,
408 struct nfcmrvl_fw_dnld,
409 rx_work);
410 struct nfcmrvl_private *priv = container_of(fw_dnld,
411 struct nfcmrvl_private,
412 fw_dnld);
414 while ((skb = skb_dequeue(&fw_dnld->rx_q))) {
415 nfc_send_to_raw_sock(priv->ndev->nfc_dev, skb,
416 RAW_PAYLOAD_NCI, NFC_DIRECTION_RX);
417 switch (fw_dnld->state) {
418 case STATE_RESET:
419 ret = process_state_reset(priv, skb);
420 break;
421 case STATE_INIT:
422 ret = process_state_init(priv, skb);
423 break;
424 case STATE_SET_REF_CLOCK:
425 ret = process_state_set_ref_clock(priv, skb);
426 break;
427 case STATE_SET_HI_CONFIG:
428 ret = process_state_set_hi_config(priv, skb);
429 break;
430 case STATE_OPEN_LC:
431 ret = process_state_open_lc(priv, skb);
432 break;
433 case STATE_FW_DNLD:
434 ret = process_state_fw_dnld(priv, skb);
435 break;
436 case STATE_CLOSE_LC:
437 ret = process_state_close_lc(priv, skb);
438 break;
439 case STATE_BOOT:
440 ret = process_state_boot(priv, skb);
441 break;
442 default:
443 ret = -EFAULT;
446 kfree_skb(skb);
448 if (ret != 0) {
449 nfc_err(priv->dev, "FW loading error");
450 fw_dnld_over(priv, ret);
451 break;
456 int nfcmrvl_fw_dnld_init(struct nfcmrvl_private *priv)
458 char name[32];
460 INIT_WORK(&priv->fw_dnld.rx_work, fw_dnld_rx_work);
461 snprintf(name, sizeof(name), "%s_nfcmrvl_fw_dnld_rx_wq",
462 dev_name(&priv->ndev->nfc_dev->dev));
463 priv->fw_dnld.rx_wq = create_singlethread_workqueue(name);
464 if (!priv->fw_dnld.rx_wq)
465 return -ENOMEM;
466 skb_queue_head_init(&priv->fw_dnld.rx_q);
467 return 0;
470 void nfcmrvl_fw_dnld_deinit(struct nfcmrvl_private *priv)
472 destroy_workqueue(priv->fw_dnld.rx_wq);
475 void nfcmrvl_fw_dnld_recv_frame(struct nfcmrvl_private *priv,
476 struct sk_buff *skb)
478 /* Discard command timer */
479 if (timer_pending(&priv->ndev->cmd_timer))
480 del_timer_sync(&priv->ndev->cmd_timer);
482 /* Allow next command */
483 atomic_set(&priv->ndev->cmd_cnt, 1);
485 /* Queue and trigger rx work */
486 skb_queue_tail(&priv->fw_dnld.rx_q, skb);
487 queue_work(priv->fw_dnld.rx_wq, &priv->fw_dnld.rx_work);
490 void nfcmrvl_fw_dnld_abort(struct nfcmrvl_private *priv)
492 fw_dnld_over(priv, -EHOSTDOWN);
495 int nfcmrvl_fw_dnld_start(struct nci_dev *ndev, const char *firmware_name)
497 struct nfcmrvl_private *priv = nci_get_drvdata(ndev);
498 struct nfcmrvl_fw_dnld *fw_dnld = &priv->fw_dnld;
499 int res;
501 if (!priv->support_fw_dnld)
502 return -ENOTSUPP;
504 if (!firmware_name || !firmware_name[0])
505 return -EINVAL;
507 strcpy(fw_dnld->name, firmware_name);
510 * Retrieve FW binary file and parse it to initialize FW download
511 * state machine.
514 /* Retrieve FW binary */
515 res = request_firmware(&fw_dnld->fw, firmware_name,
516 &ndev->nfc_dev->dev);
517 if (res < 0) {
518 nfc_err(priv->dev, "failed to retrieve FW %s", firmware_name);
519 return -ENOENT;
522 fw_dnld->header = (const struct nfcmrvl_fw *) priv->fw_dnld.fw->data;
524 if (fw_dnld->header->magic != NFCMRVL_FW_MAGIC ||
525 fw_dnld->header->phy != priv->phy) {
526 nfc_err(priv->dev, "bad firmware binary %s magic=0x%x phy=%d",
527 firmware_name, fw_dnld->header->magic,
528 fw_dnld->header->phy);
529 release_firmware(fw_dnld->fw);
530 fw_dnld->header = NULL;
531 return -EINVAL;
534 if (fw_dnld->header->helper.offset != 0) {
535 nfc_info(priv->dev, "loading helper");
536 fw_dnld->binary_config = &fw_dnld->header->helper;
537 } else {
538 nfc_info(priv->dev, "loading firmware");
539 fw_dnld->binary_config = &fw_dnld->header->firmware;
542 /* Configure a timer for timeout */
543 setup_timer(&priv->fw_dnld.timer, fw_dnld_timeout,
544 (unsigned long) priv);
545 mod_timer(&priv->fw_dnld.timer,
546 jiffies + msecs_to_jiffies(FW_DNLD_TIMEOUT));
548 /* Ronfigure HI to be sure that it is the bootrom values */
549 priv->if_ops->nci_update_config(priv,
550 &fw_dnld->header->bootrom.config);
552 /* Allow first command */
553 atomic_set(&priv->ndev->cmd_cnt, 1);
555 /* First, reset the chip */
556 priv->fw_dnld.state = STATE_RESET;
557 nfcmrvl_chip_reset(priv);
559 /* Now wait for CORE_RESET_NTF or timeout */
561 return 0;