2 * Intel Wireless UWB Link 1480
3 * MAC Firmware upload implementation
5 * Copyright (C) 2005-2006 Intel Corporation
6 * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License version
10 * 2 as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 * Implementation of the code for parsing the firmware file (extract
24 * the headers and binary code chunks) in the fw_*() functions. The
25 * code to upload pre and mac firmwares is the same, so it uses a
26 * common entry point in __mac_fw_upload(), which uses the i1480
27 * function pointers to push the firmware to the device.
29 #include <linux/delay.h>
30 #include <linux/firmware.h>
31 #include <linux/uwb.h>
32 #include "i1480-dfu.h"
35 * Descriptor for a continuous segment of MAC fw data
38 unsigned long address;
45 /* Free a chain of firmware headers */
47 void fw_hdrs_free(struct fw_hdr *hdr)
59 /* Fill a firmware header descriptor from a memory buffer */
61 int fw_hdr_load(struct i1480 *i1480, struct fw_hdr *hdr, unsigned hdr_cnt,
62 const char *_data, const u32 *data_itr, const u32 *data_top)
64 size_t hdr_offset = (const char *) data_itr - _data;
65 size_t remaining_size = (void *) data_top - (void *) data_itr;
66 if (data_itr + 2 > data_top) {
67 dev_err(i1480->dev, "fw hdr #%u/%zu: EOF reached in header at "
68 "offset %zu, limit %zu\n",
70 (const char *) data_itr + 2 - _data,
71 (const char *) data_top - _data);
75 hdr->address = le32_to_cpu(*data_itr++);
76 hdr->length = le32_to_cpu(*data_itr++);
78 if (hdr->length > remaining_size) {
79 dev_err(i1480->dev, "fw hdr #%u/%zu: EOF reached in data; "
80 "chunk too long (%zu bytes), only %zu left\n",
81 hdr_cnt, hdr_offset, hdr->length, remaining_size);
89 * Get a buffer where the firmware is supposed to be and create a
90 * chain of headers linking them together.
92 * @phdr: where to place the pointer to the first header (headers link
93 * to the next via the @hdr->next ptr); need to free the whole
96 * @_data: Pointer to the data buffer.
98 * @_data_size: Size of the data buffer (bytes); data size has to be a
99 * multiple of 4. Function will fail if not.
101 * Goes over the whole binary blob; reads the first chunk and creates
102 * a fw hdr from it (which points to where the data is in @_data and
103 * the length of the chunk); then goes on to the next chunk until
104 * done. Each header is linked to the next.
107 int fw_hdrs_load(struct i1480 *i1480, struct fw_hdr **phdr,
108 const char *_data, size_t data_size)
111 unsigned hdr_cnt = 0;
112 u32 *data = (u32 *) _data, *data_itr, *data_top;
113 struct fw_hdr *hdr, **prev_hdr = phdr;
116 /* Check size is ok and pointer is aligned */
117 if (data_size % sizeof(u32) != 0)
119 if ((unsigned long) _data % sizeof(u16) != 0)
123 data_top = (u32 *) (_data + data_size);
124 while (data_itr < data_top) {
126 hdr = kmalloc(sizeof(*hdr), GFP_KERNEL);
128 dev_err(i1480->dev, "Cannot allocate fw header "
129 "for chunk #%u\n", hdr_cnt);
132 result = fw_hdr_load(i1480, hdr, hdr_cnt,
133 _data, data_itr, data_top);
136 data_itr += 2 + hdr->length;
138 prev_hdr = &hdr->next;
154 * Compares a chunk of fw with one in the devices's memory
156 * @i1480: Device instance
157 * @hdr: Pointer to the firmware chunk
158 * @returns: 0 if equal, < 0 errno on error. If > 0, it is the offset
159 * where the difference was found (plus one).
161 * Kind of dirty and simplistic, but does the trick in both the PCI
162 * and USB version. We do a quick[er] memcmp(), and if it fails, we do
163 * a byte-by-byte to find the offset.
166 ssize_t i1480_fw_cmp(struct i1480 *i1480, struct fw_hdr *hdr)
169 u32 src_itr = 0, cnt;
170 size_t size = hdr->length*sizeof(hdr->bin[0]);
172 u8 *bin = (u8 *) hdr->bin;
175 chunk_size = size < i1480->buf_size ? size : i1480->buf_size;
176 result = i1480->read(i1480, hdr->address + src_itr, chunk_size);
178 dev_err(i1480->dev, "error reading for verification: "
182 if (memcmp(i1480->cmd_buf, bin + src_itr, result)) {
183 u8 *buf = i1480->cmd_buf;
184 for (cnt = 0; cnt < result; cnt++)
185 if (bin[src_itr + cnt] != buf[cnt]) {
186 dev_err(i1480->dev, "byte failed at "
187 "src_itr %u cnt %u [0x%02x "
188 "vs 0x%02x]\n", src_itr, cnt,
189 bin[src_itr + cnt], buf[cnt]);
190 result = src_itr + cnt + 1;
205 * Writes firmware headers to the device.
208 * @hdr: Processed firmware
209 * @returns: 0 if ok, < 0 errno on error.
212 int mac_fw_hdrs_push(struct i1480 *i1480, struct fw_hdr *hdr,
213 const char *fw_name, const char *fw_tag)
215 struct device *dev = i1480->dev;
217 struct fw_hdr *hdr_itr;
218 int verif_retry_count;
220 /* Now, header by header, push them to the hw */
221 for (hdr_itr = hdr; hdr_itr != NULL; hdr_itr = hdr_itr->next) {
222 verif_retry_count = 0;
224 dev_dbg(dev, "fw chunk (%zu @ 0x%08lx)\n",
225 hdr_itr->length * sizeof(hdr_itr->bin[0]),
227 result = i1480->write(i1480, hdr_itr->address, hdr_itr->bin,
228 hdr_itr->length*sizeof(hdr_itr->bin[0]));
230 dev_err(dev, "%s fw '%s': write failed (%zuB @ 0x%lx):"
231 " %zd\n", fw_tag, fw_name,
232 hdr_itr->length * sizeof(hdr_itr->bin[0]),
233 hdr_itr->address, result);
236 result = i1480_fw_cmp(i1480, hdr_itr);
238 dev_err(dev, "%s fw '%s': verification read "
239 "failed (%zuB @ 0x%lx): %zd\n",
241 hdr_itr->length * sizeof(hdr_itr->bin[0]),
242 hdr_itr->address, result);
245 if (result > 0) { /* Offset where it failed + 1 */
247 dev_err(dev, "%s fw '%s': WARNING: verification "
248 "failed at 0x%lx: retrying\n",
249 fw_tag, fw_name, hdr_itr->address + result);
250 if (++verif_retry_count < 3)
251 goto retry; /* write this block again! */
252 dev_err(dev, "%s fw '%s': verification failed at 0x%lx: "
253 "tried %d times\n", fw_tag, fw_name,
254 hdr_itr->address + result, verif_retry_count);
263 /** Puts the device in firmware upload mode.*/
265 int mac_fw_upload_enable(struct i1480 *i1480)
268 u32 reg = 0x800000c0;
269 u32 *buffer = (u32 *)i1480->cmd_buf;
271 if (i1480->hw_rev > 1)
273 result = i1480->read(i1480, reg, sizeof(u32));
276 *buffer &= ~i1480_FW_UPLOAD_MODE_MASK;
277 result = i1480->write(i1480, reg, buffer, sizeof(u32));
282 dev_err(i1480->dev, "can't enable fw upload mode: %d\n", result);
287 /** Gets the device out of firmware upload mode. */
289 int mac_fw_upload_disable(struct i1480 *i1480)
292 u32 reg = 0x800000c0;
293 u32 *buffer = (u32 *)i1480->cmd_buf;
295 if (i1480->hw_rev > 1)
297 result = i1480->read(i1480, reg, sizeof(u32));
300 *buffer |= i1480_FW_UPLOAD_MODE_MASK;
301 result = i1480->write(i1480, reg, buffer, sizeof(u32));
306 dev_err(i1480->dev, "can't disable fw upload mode: %d\n", result);
313 * Generic function for uploading a MAC firmware.
315 * @i1480: Device instance
316 * @fw_name: Name of firmware file to upload.
317 * @fw_tag: Name of the firmware type (for messages)
319 * @do_wait: Wait for device to emit initialization done message (0
320 * for PRE fws, 1 for MAC fws).
321 * @returns: 0 if ok, < 0 errno on error.
324 int __mac_fw_upload(struct i1480 *i1480, const char *fw_name,
328 const struct firmware *fw;
329 struct fw_hdr *fw_hdrs;
331 result = request_firmware(&fw, fw_name, i1480->dev);
332 if (result < 0) /* Up to caller to complain on -ENOENT */
334 result = fw_hdrs_load(i1480, &fw_hdrs, fw->data, fw->size);
336 dev_err(i1480->dev, "%s fw '%s': failed to parse firmware "
337 "file: %d\n", fw_tag, fw_name, result);
340 result = mac_fw_upload_enable(i1480);
342 goto out_hdrs_release;
343 result = mac_fw_hdrs_push(i1480, fw_hdrs, fw_name, fw_tag);
344 mac_fw_upload_disable(i1480);
347 dev_info(i1480->dev, "%s fw '%s': uploaded\n", fw_tag, fw_name);
349 dev_err(i1480->dev, "%s fw '%s': failed to upload (%d), "
350 "power cycle device\n", fw_tag, fw_name, result);
351 fw_hdrs_free(fw_hdrs);
353 release_firmware(fw);
360 * Upload a pre-PHY firmware
363 int i1480_pre_fw_upload(struct i1480 *i1480)
366 result = __mac_fw_upload(i1480, i1480->pre_fw_name, "PRE");
374 * Reset a the MAC and PHY
376 * @i1480: Device's instance
377 * @returns: 0 if ok, < 0 errno code on error
379 * We put the command on kmalloc'ed memory as some arches cannot do
380 * USB from the stack. The reply event is copied from an stage buffer,
381 * so it can be in the stack. See WUSB1.0[8.6.2.4] for more details.
383 * We issue the reset to make sure the UWB controller reinits the PHY;
384 * this way we can now if the PHY init went ok.
387 int i1480_cmd_reset(struct i1480 *i1480)
390 struct uwb_rccb *cmd = (void *) i1480->cmd_buf;
391 struct i1480_evt_reset {
392 struct uwb_rceb rceb;
394 } __attribute__((packed)) *reply = (void *) i1480->evt_buf;
397 cmd->bCommandType = UWB_RC_CET_GENERAL;
398 cmd->wCommand = cpu_to_le16(UWB_RC_CMD_RESET);
399 reply->rceb.bEventType = UWB_RC_CET_GENERAL;
400 reply->rceb.wEvent = UWB_RC_CMD_RESET;
401 result = i1480_cmd(i1480, "RESET", sizeof(*cmd), sizeof(*reply));
404 if (reply->bResultCode != UWB_RC_RES_SUCCESS) {
405 dev_err(i1480->dev, "RESET: command execution failed: %u\n",
415 /* Wait for the MAC FW to start running */
417 int i1480_fw_is_running_q(struct i1480 *i1480)
421 u32 *val = (u32 *) i1480->cmd_buf;
423 for (cnt = 0; cnt < 10; cnt++) {
425 result = i1480->read(i1480, 0x80080000, 4);
427 dev_err(i1480->dev, "Can't read 0x8008000: %d\n", result);
430 if (*val == 0x55555555UL) /* fw running? cool */
433 dev_err(i1480->dev, "Timed out waiting for fw to start\n");
442 * Upload MAC firmware, wait for it to start
444 * @i1480: Device instance
445 * @fw_name: Name of the file that contains the firmware
447 * This has to be called after the pre fw has been uploaded (if
450 int i1480_mac_fw_upload(struct i1480 *i1480)
452 int result = 0, deprecated_name = 0;
453 struct i1480_rceb *rcebe = (void *) i1480->evt_buf;
455 result = __mac_fw_upload(i1480, i1480->mac_fw_name, "MAC");
456 if (result == -ENOENT) {
457 result = __mac_fw_upload(i1480, i1480->mac_fw_name_deprecate,
463 if (deprecated_name == 1)
465 "WARNING: firmware file name %s is deprecated, "
466 "please rename to %s\n",
467 i1480->mac_fw_name_deprecate, i1480->mac_fw_name);
468 result = i1480_fw_is_running_q(i1480);
470 goto error_fw_not_running;
471 result = i1480->rc_setup ? i1480->rc_setup(i1480) : 0;
473 dev_err(i1480->dev, "Cannot setup after MAC fw upload: %d\n",
477 result = i1480->wait_init_done(i1480); /* wait init'on */
479 dev_err(i1480->dev, "MAC fw '%s': Initialization timed out "
480 "(%d)\n", i1480->mac_fw_name, result);
481 goto error_init_timeout;
483 /* verify we got the right initialization done event */
484 if (i1480->evt_result != sizeof(*rcebe)) {
485 dev_err(i1480->dev, "MAC fw '%s': initialization event returns "
486 "wrong size (%zu bytes vs %zu needed)\n",
487 i1480->mac_fw_name, i1480->evt_result, sizeof(*rcebe));
491 if (i1480_rceb_check(i1480, &rcebe->rceb, NULL, 0, i1480_CET_VS1,
492 i1480_EVT_RM_INIT_DONE) < 0) {
493 dev_err(i1480->dev, "wrong initialization event 0x%02x/%04x/%02x "
494 "received; expected 0x%02x/%04x/00\n",
495 rcebe->rceb.bEventType, le16_to_cpu(rcebe->rceb.wEvent),
496 rcebe->rceb.bEventContext, i1480_CET_VS1,
497 i1480_EVT_RM_INIT_DONE);
498 goto error_init_timeout;
500 result = i1480_cmd_reset(i1480);
502 dev_err(i1480->dev, "MAC fw '%s': MBOA reset failed (%d)\n",
503 i1480->mac_fw_name, result);
504 error_fw_not_running: