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authorDaniel Drake <dsd@gentoo.org>2006-06-02 12:11:32 -0400
committerJeff Garzik <jeff@garzik.org>2006-07-05 13:42:58 -0400
commite85d0918b54fbd9b38003752f7d665416b06edd8 (patch)
tree6f53e6bb10562eec331defc6811fb6d434eb21e5 /drivers/net/wireless/zd1211rw/zd_chip.c
parent4a232e725b5cc1bc7fc5b177424a9ff8313b23ad (diff)
[PATCH] ZyDAS ZD1211 USB-WLAN driver
There are 60+ USB wifi adapters available on the market based on the ZyDAS ZD1211 chip. Unlike the predecessor (ZD1201), ZD1211 does not have a hardware MAC, so most data operations are coordinated by the device driver. The ZD1211 chip sits alongside an RF transceiver which is also controlled by the driver. Our driver currently supports 2 RF types, we know of one other available in a few marketed products which we will be supporting soon. Our driver also supports the newer revision of ZD1211, called ZD1211B. The initialization and RF operations are slightly different for the new revision, but the main difference is 802.11e support. Our driver does not support the QoS features yet, but we think we know how to use them. This driver is based on ZyDAS's own GPL driver available from www.zydas.com.tw. ZyDAS engineers have been responsive and supportive of our efforts, so thumbs up to them. Additionally, the firmware is redistributable and they have provided device specs. This driver has been written primarily by Ulrich Kunitz and myself. Graham Gower, Greg KH, Remco and Bryan Rittmeyer have also contributed. The developers of ieee80211 and softmac have made our lives so much easier- thanks! We maintain a small info-page: http://zd1211.ath.cx/wiki/DriverRewrite If there is enough time for review, we would like to aim for inclusion in 2.6.18. The driver works nicely as a STA, and can connect to both open and encrypted networks (we are using software-based encryption for now). We will work towards supporting more advanced features in the future (ad-hoc, master mode, 802.11a, ...). Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/zd1211rw/zd_chip.c')
-rw-r--r--drivers/net/wireless/zd1211rw/zd_chip.c1615
1 files changed, 1615 insertions, 0 deletions
diff --git a/drivers/net/wireless/zd1211rw/zd_chip.c b/drivers/net/wireless/zd1211rw/zd_chip.c
new file mode 100644
index 000000000000..efc9c4bd826f
--- /dev/null
+++ b/drivers/net/wireless/zd1211rw/zd_chip.c
@@ -0,0 +1,1615 @@
1/* zd_chip.c
2 *
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2 of the License, or
6 * (at your option) any later version.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 */
17
18/* This file implements all the hardware specific functions for the ZD1211
19 * and ZD1211B chips. Support for the ZD1211B was possible after Timothy
20 * Legge sent me a ZD1211B device. Thank you Tim. -- Uli
21 */
22
23#include <linux/kernel.h>
24#include <linux/errno.h>
25
26#include "zd_def.h"
27#include "zd_chip.h"
28#include "zd_ieee80211.h"
29#include "zd_mac.h"
30#include "zd_rf.h"
31#include "zd_util.h"
32
33void zd_chip_init(struct zd_chip *chip,
34 struct net_device *netdev,
35 struct usb_interface *intf)
36{
37 memset(chip, 0, sizeof(*chip));
38 mutex_init(&chip->mutex);
39 zd_usb_init(&chip->usb, netdev, intf);
40 zd_rf_init(&chip->rf);
41}
42
43void zd_chip_clear(struct zd_chip *chip)
44{
45 mutex_lock(&chip->mutex);
46 zd_usb_clear(&chip->usb);
47 zd_rf_clear(&chip->rf);
48 mutex_unlock(&chip->mutex);
49 mutex_destroy(&chip->mutex);
50 memset(chip, 0, sizeof(*chip));
51}
52
53static int scnprint_mac_oui(const u8 *addr, char *buffer, size_t size)
54{
55 return scnprintf(buffer, size, "%02x-%02x-%02x",
56 addr[0], addr[1], addr[2]);
57}
58
59/* Prints an identifier line, which will support debugging. */
60static int scnprint_id(struct zd_chip *chip, char *buffer, size_t size)
61{
62 int i = 0;
63
64 i = scnprintf(buffer, size, "zd1211%s chip ",
65 chip->is_zd1211b ? "b" : "");
66 i += zd_usb_scnprint_id(&chip->usb, buffer+i, size-i);
67 i += scnprintf(buffer+i, size-i, " ");
68 i += scnprint_mac_oui(chip->e2p_mac, buffer+i, size-i);
69 i += scnprintf(buffer+i, size-i, " ");
70 i += zd_rf_scnprint_id(&chip->rf, buffer+i, size-i);
71 i += scnprintf(buffer+i, size-i, " pa%1x %c%c%c", chip->pa_type,
72 chip->patch_cck_gain ? 'g' : '-',
73 chip->patch_cr157 ? '7' : '-',
74 chip->patch_6m_band_edge ? '6' : '-');
75 return i;
76}
77
78static void print_id(struct zd_chip *chip)
79{
80 char buffer[80];
81
82 scnprint_id(chip, buffer, sizeof(buffer));
83 buffer[sizeof(buffer)-1] = 0;
84 dev_info(zd_chip_dev(chip), "%s\n", buffer);
85}
86
87/* Read a variable number of 32-bit values. Parameter count is not allowed to
88 * exceed USB_MAX_IOREAD32_COUNT.
89 */
90int zd_ioread32v_locked(struct zd_chip *chip, u32 *values, const zd_addr_t *addr,
91 unsigned int count)
92{
93 int r;
94 int i;
95 zd_addr_t *a16 = (zd_addr_t *)NULL;
96 u16 *v16;
97 unsigned int count16;
98
99 if (count > USB_MAX_IOREAD32_COUNT)
100 return -EINVAL;
101
102 /* Allocate a single memory block for values and addresses. */
103 count16 = 2*count;
104 a16 = (zd_addr_t *)kmalloc(count16 * (sizeof(zd_addr_t) + sizeof(u16)),
105 GFP_NOFS);
106 if (!a16) {
107 dev_dbg_f(zd_chip_dev(chip),
108 "error ENOMEM in allocation of a16\n");
109 r = -ENOMEM;
110 goto out;
111 }
112 v16 = (u16 *)(a16 + count16);
113
114 for (i = 0; i < count; i++) {
115 int j = 2*i;
116 /* We read the high word always first. */
117 a16[j] = zd_inc_word(addr[i]);
118 a16[j+1] = addr[i];
119 }
120
121 r = zd_ioread16v_locked(chip, v16, a16, count16);
122 if (r) {
123 dev_dbg_f(zd_chip_dev(chip),
124 "error: zd_ioread16v_locked. Error number %d\n", r);
125 goto out;
126 }
127
128 for (i = 0; i < count; i++) {
129 int j = 2*i;
130 values[i] = (v16[j] << 16) | v16[j+1];
131 }
132
133out:
134 kfree((void *)a16);
135 return r;
136}
137
138int _zd_iowrite32v_locked(struct zd_chip *chip, const struct zd_ioreq32 *ioreqs,
139 unsigned int count)
140{
141 int i, j, r;
142 struct zd_ioreq16 *ioreqs16;
143 unsigned int count16;
144
145 ZD_ASSERT(mutex_is_locked(&chip->mutex));
146
147 if (count == 0)
148 return 0;
149 if (count > USB_MAX_IOWRITE32_COUNT)
150 return -EINVAL;
151
152 /* Allocate a single memory block for values and addresses. */
153 count16 = 2*count;
154 ioreqs16 = kmalloc(count16 * sizeof(struct zd_ioreq16), GFP_NOFS);
155 if (!ioreqs16) {
156 r = -ENOMEM;
157 dev_dbg_f(zd_chip_dev(chip),
158 "error %d in ioreqs16 allocation\n", r);
159 goto out;
160 }
161
162 for (i = 0; i < count; i++) {
163 j = 2*i;
164 /* We write the high word always first. */
165 ioreqs16[j].value = ioreqs[i].value >> 16;
166 ioreqs16[j].addr = zd_inc_word(ioreqs[i].addr);
167 ioreqs16[j+1].value = ioreqs[i].value;
168 ioreqs16[j+1].addr = ioreqs[i].addr;
169 }
170
171 r = zd_usb_iowrite16v(&chip->usb, ioreqs16, count16);
172#ifdef DEBUG
173 if (r) {
174 dev_dbg_f(zd_chip_dev(chip),
175 "error %d in zd_usb_write16v\n", r);
176 }
177#endif /* DEBUG */
178out:
179 kfree(ioreqs16);
180 return r;
181}
182
183int zd_iowrite16a_locked(struct zd_chip *chip,
184 const struct zd_ioreq16 *ioreqs, unsigned int count)
185{
186 int r;
187 unsigned int i, j, t, max;
188
189 ZD_ASSERT(mutex_is_locked(&chip->mutex));
190 for (i = 0; i < count; i += j + t) {
191 t = 0;
192 max = count-i;
193 if (max > USB_MAX_IOWRITE16_COUNT)
194 max = USB_MAX_IOWRITE16_COUNT;
195 for (j = 0; j < max; j++) {
196 if (!ioreqs[i+j].addr) {
197 t = 1;
198 break;
199 }
200 }
201
202 r = zd_usb_iowrite16v(&chip->usb, &ioreqs[i], j);
203 if (r) {
204 dev_dbg_f(zd_chip_dev(chip),
205 "error zd_usb_iowrite16v. Error number %d\n",
206 r);
207 return r;
208 }
209 }
210
211 return 0;
212}
213
214/* Writes a variable number of 32 bit registers. The functions will split
215 * that in several USB requests. A split can be forced by inserting an IO
216 * request with an zero address field.
217 */
218int zd_iowrite32a_locked(struct zd_chip *chip,
219 const struct zd_ioreq32 *ioreqs, unsigned int count)
220{
221 int r;
222 unsigned int i, j, t, max;
223
224 for (i = 0; i < count; i += j + t) {
225 t = 0;
226 max = count-i;
227 if (max > USB_MAX_IOWRITE32_COUNT)
228 max = USB_MAX_IOWRITE32_COUNT;
229 for (j = 0; j < max; j++) {
230 if (!ioreqs[i+j].addr) {
231 t = 1;
232 break;
233 }
234 }
235
236 r = _zd_iowrite32v_locked(chip, &ioreqs[i], j);
237 if (r) {
238 dev_dbg_f(zd_chip_dev(chip),
239 "error _zd_iowrite32v_locked."
240 " Error number %d\n", r);
241 return r;
242 }
243 }
244
245 return 0;
246}
247
248int zd_ioread16(struct zd_chip *chip, zd_addr_t addr, u16 *value)
249{
250 int r;
251
252 ZD_ASSERT(!mutex_is_locked(&chip->mutex));
253 mutex_lock(&chip->mutex);
254 r = zd_ioread16_locked(chip, value, addr);
255 mutex_unlock(&chip->mutex);
256 return r;
257}
258
259int zd_ioread32(struct zd_chip *chip, zd_addr_t addr, u32 *value)
260{
261 int r;
262
263 ZD_ASSERT(!mutex_is_locked(&chip->mutex));
264 mutex_lock(&chip->mutex);
265 r = zd_ioread32_locked(chip, value, addr);
266 mutex_unlock(&chip->mutex);
267 return r;
268}
269
270int zd_iowrite16(struct zd_chip *chip, zd_addr_t addr, u16 value)
271{
272 int r;
273
274 ZD_ASSERT(!mutex_is_locked(&chip->mutex));
275 mutex_lock(&chip->mutex);
276 r = zd_iowrite16_locked(chip, value, addr);
277 mutex_unlock(&chip->mutex);
278 return r;
279}
280
281int zd_iowrite32(struct zd_chip *chip, zd_addr_t addr, u32 value)
282{
283 int r;
284
285 ZD_ASSERT(!mutex_is_locked(&chip->mutex));
286 mutex_lock(&chip->mutex);
287 r = zd_iowrite32_locked(chip, value, addr);
288 mutex_unlock(&chip->mutex);
289 return r;
290}
291
292int zd_ioread32v(struct zd_chip *chip, const zd_addr_t *addresses,
293 u32 *values, unsigned int count)
294{
295 int r;
296
297 ZD_ASSERT(!mutex_is_locked(&chip->mutex));
298 mutex_lock(&chip->mutex);
299 r = zd_ioread32v_locked(chip, values, addresses, count);
300 mutex_unlock(&chip->mutex);
301 return r;
302}
303
304int zd_iowrite32a(struct zd_chip *chip, const struct zd_ioreq32 *ioreqs,
305 unsigned int count)
306{
307 int r;
308
309 ZD_ASSERT(!mutex_is_locked(&chip->mutex));
310 mutex_lock(&chip->mutex);
311 r = zd_iowrite32a_locked(chip, ioreqs, count);
312 mutex_unlock(&chip->mutex);
313 return r;
314}
315
316static int read_pod(struct zd_chip *chip, u8 *rf_type)
317{
318 int r;
319 u32 value;
320
321 ZD_ASSERT(mutex_is_locked(&chip->mutex));
322 r = zd_ioread32_locked(chip, &value, E2P_POD);
323 if (r)
324 goto error;
325 dev_dbg_f(zd_chip_dev(chip), "E2P_POD %#010x\n", value);
326
327 /* FIXME: AL2230 handling (Bit 7 in POD) */
328 *rf_type = value & 0x0f;
329 chip->pa_type = (value >> 16) & 0x0f;
330 chip->patch_cck_gain = (value >> 8) & 0x1;
331 chip->patch_cr157 = (value >> 13) & 0x1;
332 chip->patch_6m_band_edge = (value >> 21) & 0x1;
333
334 dev_dbg_f(zd_chip_dev(chip),
335 "RF %s %#01x PA type %#01x patch CCK %d patch CR157 %d "
336 "patch 6M %d\n",
337 zd_rf_name(*rf_type), *rf_type,
338 chip->pa_type, chip->patch_cck_gain,
339 chip->patch_cr157, chip->patch_6m_band_edge);
340 return 0;
341error:
342 *rf_type = 0;
343 chip->pa_type = 0;
344 chip->patch_cck_gain = 0;
345 chip->patch_cr157 = 0;
346 chip->patch_6m_band_edge = 0;
347 return r;
348}
349
350static int _read_mac_addr(struct zd_chip *chip, u8 *mac_addr,
351 const zd_addr_t *addr)
352{
353 int r;
354 u32 parts[2];
355
356 r = zd_ioread32v_locked(chip, parts, (const zd_addr_t *)addr, 2);
357 if (r) {
358 dev_dbg_f(zd_chip_dev(chip),
359 "error: couldn't read e2p macs. Error number %d\n", r);
360 return r;
361 }
362
363 mac_addr[0] = parts[0];
364 mac_addr[1] = parts[0] >> 8;
365 mac_addr[2] = parts[0] >> 16;
366 mac_addr[3] = parts[0] >> 24;
367 mac_addr[4] = parts[1];
368 mac_addr[5] = parts[1] >> 8;
369
370 return 0;
371}
372
373static int read_e2p_mac_addr(struct zd_chip *chip)
374{
375 static const zd_addr_t addr[2] = { E2P_MAC_ADDR_P1, E2P_MAC_ADDR_P2 };
376
377 ZD_ASSERT(mutex_is_locked(&chip->mutex));
378 return _read_mac_addr(chip, chip->e2p_mac, (const zd_addr_t *)addr);
379}
380
381/* MAC address: if custom mac addresses are to to be used CR_MAC_ADDR_P1 and
382 * CR_MAC_ADDR_P2 must be overwritten
383 */
384void zd_get_e2p_mac_addr(struct zd_chip *chip, u8 *mac_addr)
385{
386 mutex_lock(&chip->mutex);
387 memcpy(mac_addr, chip->e2p_mac, ETH_ALEN);
388 mutex_unlock(&chip->mutex);
389}
390
391static int read_mac_addr(struct zd_chip *chip, u8 *mac_addr)
392{
393 static const zd_addr_t addr[2] = { CR_MAC_ADDR_P1, CR_MAC_ADDR_P2 };
394 return _read_mac_addr(chip, mac_addr, (const zd_addr_t *)addr);
395}
396
397int zd_read_mac_addr(struct zd_chip *chip, u8 *mac_addr)
398{
399 int r;
400
401 dev_dbg_f(zd_chip_dev(chip), "\n");
402 mutex_lock(&chip->mutex);
403 r = read_mac_addr(chip, mac_addr);
404 mutex_unlock(&chip->mutex);
405 return r;
406}
407
408int zd_write_mac_addr(struct zd_chip *chip, const u8 *mac_addr)
409{
410 int r;
411 struct zd_ioreq32 reqs[2] = {
412 [0] = { .addr = CR_MAC_ADDR_P1 },
413 [1] = { .addr = CR_MAC_ADDR_P2 },
414 };
415
416 reqs[0].value = (mac_addr[3] << 24)
417 | (mac_addr[2] << 16)
418 | (mac_addr[1] << 8)
419 | mac_addr[0];
420 reqs[1].value = (mac_addr[5] << 8)
421 | mac_addr[4];
422
423 dev_dbg_f(zd_chip_dev(chip),
424 "mac addr " MAC_FMT "\n", MAC_ARG(mac_addr));
425
426 mutex_lock(&chip->mutex);
427 r = zd_iowrite32a_locked(chip, reqs, ARRAY_SIZE(reqs));
428#ifdef DEBUG
429 {
430 u8 tmp[ETH_ALEN];
431 read_mac_addr(chip, tmp);
432 }
433#endif /* DEBUG */
434 mutex_unlock(&chip->mutex);
435 return r;
436}
437
438int zd_read_regdomain(struct zd_chip *chip, u8 *regdomain)
439{
440 int r;
441 u32 value;
442
443 mutex_lock(&chip->mutex);
444 r = zd_ioread32_locked(chip, &value, E2P_SUBID);
445 mutex_unlock(&chip->mutex);
446 if (r)
447 return r;
448
449 *regdomain = value >> 16;
450 dev_dbg_f(zd_chip_dev(chip), "regdomain: %#04x\n", *regdomain);
451
452 return 0;
453}
454
455static int read_values(struct zd_chip *chip, u8 *values, size_t count,
456 zd_addr_t e2p_addr, u32 guard)
457{
458 int r;
459 int i;
460 u32 v;
461
462 ZD_ASSERT(mutex_is_locked(&chip->mutex));
463 for (i = 0;;) {
464 r = zd_ioread32_locked(chip, &v, e2p_addr+i/2);
465 if (r)
466 return r;
467 v -= guard;
468 if (i+4 < count) {
469 values[i++] = v;
470 values[i++] = v >> 8;
471 values[i++] = v >> 16;
472 values[i++] = v >> 24;
473 continue;
474 }
475 for (;i < count; i++)
476 values[i] = v >> (8*(i%3));
477 return 0;
478 }
479}
480
481static int read_pwr_cal_values(struct zd_chip *chip)
482{
483 return read_values(chip, chip->pwr_cal_values,
484 E2P_CHANNEL_COUNT, E2P_PWR_CAL_VALUE1,
485 0);
486}
487
488static int read_pwr_int_values(struct zd_chip *chip)
489{
490 return read_values(chip, chip->pwr_int_values,
491 E2P_CHANNEL_COUNT, E2P_PWR_INT_VALUE1,
492 E2P_PWR_INT_GUARD);
493}
494
495static int read_ofdm_cal_values(struct zd_chip *chip)
496{
497 int r;
498 int i;
499 static const zd_addr_t addresses[] = {
500 E2P_36M_CAL_VALUE1,
501 E2P_48M_CAL_VALUE1,
502 E2P_54M_CAL_VALUE1,
503 };
504
505 for (i = 0; i < 3; i++) {
506 r = read_values(chip, chip->ofdm_cal_values[i],
507 E2P_CHANNEL_COUNT, addresses[i], 0);
508 if (r)
509 return r;
510 }
511 return 0;
512}
513
514static int read_cal_int_tables(struct zd_chip *chip)
515{
516 int r;
517
518 r = read_pwr_cal_values(chip);
519 if (r)
520 return r;
521 r = read_pwr_int_values(chip);
522 if (r)
523 return r;
524 r = read_ofdm_cal_values(chip);
525 if (r)
526 return r;
527 return 0;
528}
529
530/* phy means physical registers */
531int zd_chip_lock_phy_regs(struct zd_chip *chip)
532{
533 int r;
534 u32 tmp;
535
536 ZD_ASSERT(mutex_is_locked(&chip->mutex));
537 r = zd_ioread32_locked(chip, &tmp, CR_REG1);
538 if (r) {
539 dev_err(zd_chip_dev(chip), "error ioread32(CR_REG1): %d\n", r);
540 return r;
541 }
542
543 dev_dbg_f(zd_chip_dev(chip),
544 "CR_REG1: 0x%02x -> 0x%02x\n", tmp, tmp & ~UNLOCK_PHY_REGS);
545 tmp &= ~UNLOCK_PHY_REGS;
546
547 r = zd_iowrite32_locked(chip, tmp, CR_REG1);
548 if (r)
549 dev_err(zd_chip_dev(chip), "error iowrite32(CR_REG1): %d\n", r);
550 return r;
551}
552
553int zd_chip_unlock_phy_regs(struct zd_chip *chip)
554{
555 int r;
556 u32 tmp;
557
558 ZD_ASSERT(mutex_is_locked(&chip->mutex));
559 r = zd_ioread32_locked(chip, &tmp, CR_REG1);
560 if (r) {
561 dev_err(zd_chip_dev(chip),
562 "error ioread32(CR_REG1): %d\n", r);
563 return r;
564 }
565
566 dev_dbg_f(zd_chip_dev(chip),
567 "CR_REG1: 0x%02x -> 0x%02x\n", tmp, tmp | UNLOCK_PHY_REGS);
568 tmp |= UNLOCK_PHY_REGS;
569
570 r = zd_iowrite32_locked(chip, tmp, CR_REG1);
571 if (r)
572 dev_err(zd_chip_dev(chip), "error iowrite32(CR_REG1): %d\n", r);
573 return r;
574}
575
576/* CR157 can be optionally patched by the EEPROM */
577static int patch_cr157(struct zd_chip *chip)
578{
579 int r;
580 u32 value;
581
582 if (!chip->patch_cr157)
583 return 0;
584
585 r = zd_ioread32_locked(chip, &value, E2P_PHY_REG);
586 if (r)
587 return r;
588
589 dev_dbg_f(zd_chip_dev(chip), "patching value %x\n", value >> 8);
590 return zd_iowrite32_locked(chip, value >> 8, CR157);
591}
592
593/*
594 * 6M band edge can be optionally overwritten for certain RF's
595 * Vendor driver says: for FCC regulation, enabled per HWFeature 6M band edge
596 * bit (for AL2230, AL2230S)
597 */
598static int patch_6m_band_edge(struct zd_chip *chip, int channel)
599{
600 struct zd_ioreq16 ioreqs[] = {
601 { CR128, 0x14 }, { CR129, 0x12 }, { CR130, 0x10 },
602 { CR47, 0x1e },
603 };
604
605 if (!chip->patch_6m_band_edge || !chip->rf.patch_6m_band_edge)
606 return 0;
607
608 /* FIXME: Channel 11 is not the edge for all regulatory domains. */
609 if (channel == 1 || channel == 11)
610 ioreqs[0].value = 0x12;
611
612 dev_dbg_f(zd_chip_dev(chip), "patching for channel %d\n", channel);
613 return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
614}
615
616static int zd1211_hw_reset_phy(struct zd_chip *chip)
617{
618 static const struct zd_ioreq16 ioreqs[] = {
619 { CR0, 0x0a }, { CR1, 0x06 }, { CR2, 0x26 },
620 { CR3, 0x38 }, { CR4, 0x80 }, { CR9, 0xa0 },
621 { CR10, 0x81 }, { CR11, 0x00 }, { CR12, 0x7f },
622 { CR13, 0x8c }, { CR14, 0x80 }, { CR15, 0x3d },
623 { CR16, 0x20 }, { CR17, 0x1e }, { CR18, 0x0a },
624 { CR19, 0x48 }, { CR20, 0x0c }, { CR21, 0x0c },
625 { CR22, 0x23 }, { CR23, 0x90 }, { CR24, 0x14 },
626 { CR25, 0x40 }, { CR26, 0x10 }, { CR27, 0x19 },
627 { CR28, 0x7f }, { CR29, 0x80 }, { CR30, 0x4b },
628 { CR31, 0x60 }, { CR32, 0x43 }, { CR33, 0x08 },
629 { CR34, 0x06 }, { CR35, 0x0a }, { CR36, 0x00 },
630 { CR37, 0x00 }, { CR38, 0x38 }, { CR39, 0x0c },
631 { CR40, 0x84 }, { CR41, 0x2a }, { CR42, 0x80 },
632 { CR43, 0x10 }, { CR44, 0x12 }, { CR46, 0xff },
633 { CR47, 0x1E }, { CR48, 0x26 }, { CR49, 0x5b },
634 { CR64, 0xd0 }, { CR65, 0x04 }, { CR66, 0x58 },
635 { CR67, 0xc9 }, { CR68, 0x88 }, { CR69, 0x41 },
636 { CR70, 0x23 }, { CR71, 0x10 }, { CR72, 0xff },
637 { CR73, 0x32 }, { CR74, 0x30 }, { CR75, 0x65 },
638 { CR76, 0x41 }, { CR77, 0x1b }, { CR78, 0x30 },
639 { CR79, 0x68 }, { CR80, 0x64 }, { CR81, 0x64 },
640 { CR82, 0x00 }, { CR83, 0x00 }, { CR84, 0x00 },
641 { CR85, 0x02 }, { CR86, 0x00 }, { CR87, 0x00 },
642 { CR88, 0xff }, { CR89, 0xfc }, { CR90, 0x00 },
643 { CR91, 0x00 }, { CR92, 0x00 }, { CR93, 0x08 },
644 { CR94, 0x00 }, { CR95, 0x00 }, { CR96, 0xff },
645 { CR97, 0xe7 }, { CR98, 0x00 }, { CR99, 0x00 },
646 { CR100, 0x00 }, { CR101, 0xae }, { CR102, 0x02 },
647 { CR103, 0x00 }, { CR104, 0x03 }, { CR105, 0x65 },
648 { CR106, 0x04 }, { CR107, 0x00 }, { CR108, 0x0a },
649 { CR109, 0xaa }, { CR110, 0xaa }, { CR111, 0x25 },
650 { CR112, 0x25 }, { CR113, 0x00 }, { CR119, 0x1e },
651 { CR125, 0x90 }, { CR126, 0x00 }, { CR127, 0x00 },
652 { },
653 { CR5, 0x00 }, { CR6, 0x00 }, { CR7, 0x00 },
654 { CR8, 0x00 }, { CR9, 0x20 }, { CR12, 0xf0 },
655 { CR20, 0x0e }, { CR21, 0x0e }, { CR27, 0x10 },
656 { CR44, 0x33 }, { CR47, 0x1E }, { CR83, 0x24 },
657 { CR84, 0x04 }, { CR85, 0x00 }, { CR86, 0x0C },
658 { CR87, 0x12 }, { CR88, 0x0C }, { CR89, 0x00 },
659 { CR90, 0x10 }, { CR91, 0x08 }, { CR93, 0x00 },
660 { CR94, 0x01 }, { CR95, 0x00 }, { CR96, 0x50 },
661 { CR97, 0x37 }, { CR98, 0x35 }, { CR101, 0x13 },
662 { CR102, 0x27 }, { CR103, 0x27 }, { CR104, 0x18 },
663 { CR105, 0x12 }, { CR109, 0x27 }, { CR110, 0x27 },
664 { CR111, 0x27 }, { CR112, 0x27 }, { CR113, 0x27 },
665 { CR114, 0x27 }, { CR115, 0x26 }, { CR116, 0x24 },
666 { CR117, 0xfc }, { CR118, 0xfa }, { CR120, 0x4f },
667 { CR123, 0x27 }, { CR125, 0xaa }, { CR127, 0x03 },
668 { CR128, 0x14 }, { CR129, 0x12 }, { CR130, 0x10 },
669 { CR131, 0x0C }, { CR136, 0xdf }, { CR137, 0x40 },
670 { CR138, 0xa0 }, { CR139, 0xb0 }, { CR140, 0x99 },
671 { CR141, 0x82 }, { CR142, 0x54 }, { CR143, 0x1c },
672 { CR144, 0x6c }, { CR147, 0x07 }, { CR148, 0x4c },
673 { CR149, 0x50 }, { CR150, 0x0e }, { CR151, 0x18 },
674 { CR160, 0xfe }, { CR161, 0xee }, { CR162, 0xaa },
675 { CR163, 0xfa }, { CR164, 0xfa }, { CR165, 0xea },
676 { CR166, 0xbe }, { CR167, 0xbe }, { CR168, 0x6a },
677 { CR169, 0xba }, { CR170, 0xba }, { CR171, 0xba },
678 /* Note: CR204 must lead the CR203 */
679 { CR204, 0x7d },
680 { },
681 { CR203, 0x30 },
682 };
683
684 int r, t;
685
686 dev_dbg_f(zd_chip_dev(chip), "\n");
687
688 r = zd_chip_lock_phy_regs(chip);
689 if (r)
690 goto out;
691
692 r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
693 if (r)
694 goto unlock;
695
696 r = patch_cr157(chip);
697unlock:
698 t = zd_chip_unlock_phy_regs(chip);
699 if (t && !r)
700 r = t;
701out:
702 return r;
703}
704
705static int zd1211b_hw_reset_phy(struct zd_chip *chip)
706{
707 static const struct zd_ioreq16 ioreqs[] = {
708 { CR0, 0x14 }, { CR1, 0x06 }, { CR2, 0x26 },
709 { CR3, 0x38 }, { CR4, 0x80 }, { CR9, 0xe0 },
710 { CR10, 0x81 },
711 /* power control { { CR11, 1 << 6 }, */
712 { CR11, 0x00 },
713 { CR12, 0xf0 }, { CR13, 0x8c }, { CR14, 0x80 },
714 { CR15, 0x3d }, { CR16, 0x20 }, { CR17, 0x1e },
715 { CR18, 0x0a }, { CR19, 0x48 },
716 { CR20, 0x10 }, /* Org:0x0E, ComTrend:RalLink AP */
717 { CR21, 0x0e }, { CR22, 0x23 }, { CR23, 0x90 },
718 { CR24, 0x14 }, { CR25, 0x40 }, { CR26, 0x10 },
719 { CR27, 0x10 }, { CR28, 0x7f }, { CR29, 0x80 },
720 { CR30, 0x49 }, /* jointly decoder, no ASIC */
721 { CR31, 0x60 }, { CR32, 0x43 }, { CR33, 0x08 },
722 { CR34, 0x06 }, { CR35, 0x0a }, { CR36, 0x00 },
723 { CR37, 0x00 }, { CR38, 0x38 }, { CR39, 0x0c },
724 { CR40, 0x84 }, { CR41, 0x2a }, { CR42, 0x80 },
725 { CR43, 0x10 }, { CR44, 0x33 }, { CR46, 0xff },
726 { CR47, 0x1E }, { CR48, 0x26 }, { CR49, 0x5b },
727 { CR64, 0xd0 }, { CR65, 0x04 }, { CR66, 0x58 },
728 { CR67, 0xc9 }, { CR68, 0x88 }, { CR69, 0x41 },
729 { CR70, 0x23 }, { CR71, 0x10 }, { CR72, 0xff },
730 { CR73, 0x32 }, { CR74, 0x30 }, { CR75, 0x65 },
731 { CR76, 0x41 }, { CR77, 0x1b }, { CR78, 0x30 },
732 { CR79, 0xf0 }, { CR80, 0x64 }, { CR81, 0x64 },
733 { CR82, 0x00 }, { CR83, 0x24 }, { CR84, 0x04 },
734 { CR85, 0x00 }, { CR86, 0x0c }, { CR87, 0x12 },
735 { CR88, 0x0c }, { CR89, 0x00 }, { CR90, 0x58 },
736 { CR91, 0x04 }, { CR92, 0x00 }, { CR93, 0x00 },
737 { CR94, 0x01 },
738 { CR95, 0x20 }, /* ZD1211B */
739 { CR96, 0x50 }, { CR97, 0x37 }, { CR98, 0x35 },
740 { CR99, 0x00 }, { CR100, 0x01 }, { CR101, 0x13 },
741 { CR102, 0x27 }, { CR103, 0x27 }, { CR104, 0x18 },
742 { CR105, 0x12 }, { CR106, 0x04 }, { CR107, 0x00 },
743 { CR108, 0x0a }, { CR109, 0x27 }, { CR110, 0x27 },
744 { CR111, 0x27 }, { CR112, 0x27 }, { CR113, 0x27 },
745 { CR114, 0x27 }, { CR115, 0x26 }, { CR116, 0x24 },
746 { CR117, 0xfc }, { CR118, 0xfa }, { CR119, 0x1e },
747 { CR125, 0x90 }, { CR126, 0x00 }, { CR127, 0x00 },
748 { CR128, 0x14 }, { CR129, 0x12 }, { CR130, 0x10 },
749 { CR131, 0x0c }, { CR136, 0xdf }, { CR137, 0xa0 },
750 { CR138, 0xa8 }, { CR139, 0xb4 }, { CR140, 0x98 },
751 { CR141, 0x82 }, { CR142, 0x53 }, { CR143, 0x1c },
752 { CR144, 0x6c }, { CR147, 0x07 }, { CR148, 0x40 },
753 { CR149, 0x40 }, /* Org:0x50 ComTrend:RalLink AP */
754 { CR150, 0x14 }, /* Org:0x0E ComTrend:RalLink AP */
755 { CR151, 0x18 }, { CR159, 0x70 }, { CR160, 0xfe },
756 { CR161, 0xee }, { CR162, 0xaa }, { CR163, 0xfa },
757 { CR164, 0xfa }, { CR165, 0xea }, { CR166, 0xbe },
758 { CR167, 0xbe }, { CR168, 0x6a }, { CR169, 0xba },
759 { CR170, 0xba }, { CR171, 0xba },
760 /* Note: CR204 must lead the CR203 */
761 { CR204, 0x7d },
762 {},
763 { CR203, 0x30 },
764 };
765
766 int r, t;
767
768 dev_dbg_f(zd_chip_dev(chip), "\n");
769
770 r = zd_chip_lock_phy_regs(chip);
771 if (r)
772 goto out;
773
774 r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
775 if (r)
776 goto unlock;
777
778 r = patch_cr157(chip);
779unlock:
780 t = zd_chip_unlock_phy_regs(chip);
781 if (t && !r)
782 r = t;
783out:
784 return r;
785}
786
787static int hw_reset_phy(struct zd_chip *chip)
788{
789 return chip->is_zd1211b ? zd1211b_hw_reset_phy(chip) :
790 zd1211_hw_reset_phy(chip);
791}
792
793static int zd1211_hw_init_hmac(struct zd_chip *chip)
794{
795 static const struct zd_ioreq32 ioreqs[] = {
796 { CR_ACK_TIMEOUT_EXT, 0x20 },
797 { CR_ADDA_MBIAS_WARMTIME, 0x30000808 },
798 { CR_ZD1211_RETRY_MAX, 0x2 },
799 { CR_SNIFFER_ON, 0 },
800 { CR_RX_FILTER, AP_RX_FILTER },
801 { CR_GROUP_HASH_P1, 0x00 },
802 { CR_GROUP_HASH_P2, 0x80000000 },
803 { CR_REG1, 0xa4 },
804 { CR_ADDA_PWR_DWN, 0x7f },
805 { CR_BCN_PLCP_CFG, 0x00f00401 },
806 { CR_PHY_DELAY, 0x00 },
807 { CR_ACK_TIMEOUT_EXT, 0x80 },
808 { CR_ADDA_PWR_DWN, 0x00 },
809 { CR_ACK_TIME_80211, 0x100 },
810 { CR_IFS_VALUE, 0x547c032 },
811 { CR_RX_PE_DELAY, 0x70 },
812 { CR_PS_CTRL, 0x10000000 },
813 { CR_RTS_CTS_RATE, 0x02030203 },
814 { CR_RX_THRESHOLD, 0x000c0640 },
815 { CR_AFTER_PNP, 0x1 },
816 { CR_WEP_PROTECT, 0x114 },
817 };
818
819 int r;
820
821 dev_dbg_f(zd_chip_dev(chip), "\n");
822 ZD_ASSERT(mutex_is_locked(&chip->mutex));
823 r = zd_iowrite32a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
824#ifdef DEBUG
825 if (r) {
826 dev_err(zd_chip_dev(chip),
827 "error in zd_iowrite32a_locked. Error number %d\n", r);
828 }
829#endif /* DEBUG */
830 return r;
831}
832
833static int zd1211b_hw_init_hmac(struct zd_chip *chip)
834{
835 static const struct zd_ioreq32 ioreqs[] = {
836 { CR_ACK_TIMEOUT_EXT, 0x20 },
837 { CR_ADDA_MBIAS_WARMTIME, 0x30000808 },
838 { CR_ZD1211B_RETRY_MAX, 0x02020202 },
839 { CR_ZD1211B_TX_PWR_CTL4, 0x007f003f },
840 { CR_ZD1211B_TX_PWR_CTL3, 0x007f003f },
841 { CR_ZD1211B_TX_PWR_CTL2, 0x003f001f },
842 { CR_ZD1211B_TX_PWR_CTL1, 0x001f000f },
843 { CR_ZD1211B_AIFS_CTL1, 0x00280028 },
844 { CR_ZD1211B_AIFS_CTL2, 0x008C003C },
845 { CR_ZD1211B_TXOP, 0x01800824 },
846 { CR_SNIFFER_ON, 0 },
847 { CR_RX_FILTER, AP_RX_FILTER },
848 { CR_GROUP_HASH_P1, 0x00 },
849 { CR_GROUP_HASH_P2, 0x80000000 },
850 { CR_REG1, 0xa4 },
851 { CR_ADDA_PWR_DWN, 0x7f },
852 { CR_BCN_PLCP_CFG, 0x00f00401 },
853 { CR_PHY_DELAY, 0x00 },
854 { CR_ACK_TIMEOUT_EXT, 0x80 },
855 { CR_ADDA_PWR_DWN, 0x00 },
856 { CR_ACK_TIME_80211, 0x100 },
857 { CR_IFS_VALUE, 0x547c032 },
858 { CR_RX_PE_DELAY, 0x70 },
859 { CR_PS_CTRL, 0x10000000 },
860 { CR_RTS_CTS_RATE, 0x02030203 },
861 { CR_RX_THRESHOLD, 0x000c0640 },
862 { CR_AFTER_PNP, 0x1 },
863 { CR_WEP_PROTECT, 0x114 },
864 };
865
866 int r;
867
868 dev_dbg_f(zd_chip_dev(chip), "\n");
869 ZD_ASSERT(mutex_is_locked(&chip->mutex));
870 r = zd_iowrite32a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
871 if (r) {
872 dev_dbg_f(zd_chip_dev(chip),
873 "error in zd_iowrite32a_locked. Error number %d\n", r);
874 }
875 return r;
876}
877
878static int hw_init_hmac(struct zd_chip *chip)
879{
880 return chip->is_zd1211b ?
881 zd1211b_hw_init_hmac(chip) : zd1211_hw_init_hmac(chip);
882}
883
884struct aw_pt_bi {
885 u32 atim_wnd_period;
886 u32 pre_tbtt;
887 u32 beacon_interval;
888};
889
890static int get_aw_pt_bi(struct zd_chip *chip, struct aw_pt_bi *s)
891{
892 int r;
893 static const zd_addr_t aw_pt_bi_addr[] =
894 { CR_ATIM_WND_PERIOD, CR_PRE_TBTT, CR_BCN_INTERVAL };
895 u32 values[3];
896
897 r = zd_ioread32v_locked(chip, values, (const zd_addr_t *)aw_pt_bi_addr,
898 ARRAY_SIZE(aw_pt_bi_addr));
899 if (r) {
900 memset(s, 0, sizeof(*s));
901 return r;
902 }
903
904 s->atim_wnd_period = values[0];
905 s->pre_tbtt = values[1];
906 s->beacon_interval = values[2];
907 dev_dbg_f(zd_chip_dev(chip), "aw %u pt %u bi %u\n",
908 s->atim_wnd_period, s->pre_tbtt, s->beacon_interval);
909 return 0;
910}
911
912static int set_aw_pt_bi(struct zd_chip *chip, struct aw_pt_bi *s)
913{
914 struct zd_ioreq32 reqs[3];
915
916 if (s->beacon_interval <= 5)
917 s->beacon_interval = 5;
918 if (s->pre_tbtt < 4 || s->pre_tbtt >= s->beacon_interval)
919 s->pre_tbtt = s->beacon_interval - 1;
920 if (s->atim_wnd_period >= s->pre_tbtt)
921 s->atim_wnd_period = s->pre_tbtt - 1;
922
923 reqs[0].addr = CR_ATIM_WND_PERIOD;
924 reqs[0].value = s->atim_wnd_period;
925 reqs[1].addr = CR_PRE_TBTT;
926 reqs[1].value = s->pre_tbtt;
927 reqs[2].addr = CR_BCN_INTERVAL;
928 reqs[2].value = s->beacon_interval;
929
930 dev_dbg_f(zd_chip_dev(chip),
931 "aw %u pt %u bi %u\n", s->atim_wnd_period, s->pre_tbtt,
932 s->beacon_interval);
933 return zd_iowrite32a_locked(chip, reqs, ARRAY_SIZE(reqs));
934}
935
936
937static int set_beacon_interval(struct zd_chip *chip, u32 interval)
938{
939 int r;
940 struct aw_pt_bi s;
941
942 ZD_ASSERT(mutex_is_locked(&chip->mutex));
943 r = get_aw_pt_bi(chip, &s);
944 if (r)
945 return r;
946 s.beacon_interval = interval;
947 return set_aw_pt_bi(chip, &s);
948}
949
950int zd_set_beacon_interval(struct zd_chip *chip, u32 interval)
951{
952 int r;
953
954 mutex_lock(&chip->mutex);
955 r = set_beacon_interval(chip, interval);
956 mutex_unlock(&chip->mutex);
957 return r;
958}
959
960static int hw_init(struct zd_chip *chip)
961{
962 int r;
963
964 dev_dbg_f(zd_chip_dev(chip), "\n");
965 ZD_ASSERT(mutex_is_locked(&chip->mutex));
966 r = hw_reset_phy(chip);
967 if (r)
968 return r;
969
970 r = hw_init_hmac(chip);
971 if (r)
972 return r;
973 r = set_beacon_interval(chip, 100);
974 if (r)
975 return r;
976 return 0;
977}
978
979#ifdef DEBUG
980static int dump_cr(struct zd_chip *chip, const zd_addr_t addr,
981 const char *addr_string)
982{
983 int r;
984 u32 value;
985
986 r = zd_ioread32_locked(chip, &value, addr);
987 if (r) {
988 dev_dbg_f(zd_chip_dev(chip),
989 "error reading %s. Error number %d\n", addr_string, r);
990 return r;
991 }
992
993 dev_dbg_f(zd_chip_dev(chip), "%s %#010x\n",
994 addr_string, (unsigned int)value);
995 return 0;
996}
997
998static int test_init(struct zd_chip *chip)
999{
1000 int r;
1001
1002 r = dump_cr(chip, CR_AFTER_PNP, "CR_AFTER_PNP");
1003 if (r)
1004 return r;
1005 r = dump_cr(chip, CR_GPI_EN, "CR_GPI_EN");
1006 if (r)
1007 return r;
1008 return dump_cr(chip, CR_INTERRUPT, "CR_INTERRUPT");
1009}
1010
1011static void dump_fw_registers(struct zd_chip *chip)
1012{
1013 static const zd_addr_t addr[4] = {
1014 FW_FIRMWARE_VER, FW_USB_SPEED, FW_FIX_TX_RATE,
1015 FW_LINK_STATUS
1016 };
1017
1018 int r;
1019 u16 values[4];
1020
1021 r = zd_ioread16v_locked(chip, values, (const zd_addr_t*)addr,
1022 ARRAY_SIZE(addr));
1023 if (r) {
1024 dev_dbg_f(zd_chip_dev(chip), "error %d zd_ioread16v_locked\n",
1025 r);
1026 return;
1027 }
1028
1029 dev_dbg_f(zd_chip_dev(chip), "FW_FIRMWARE_VER %#06hx\n", values[0]);
1030 dev_dbg_f(zd_chip_dev(chip), "FW_USB_SPEED %#06hx\n", values[1]);
1031 dev_dbg_f(zd_chip_dev(chip), "FW_FIX_TX_RATE %#06hx\n", values[2]);
1032 dev_dbg_f(zd_chip_dev(chip), "FW_LINK_STATUS %#06hx\n", values[3]);
1033}
1034#endif /* DEBUG */
1035
1036static int print_fw_version(struct zd_chip *chip)
1037{
1038 int r;
1039 u16 version;
1040
1041 r = zd_ioread16_locked(chip, &version, FW_FIRMWARE_VER);
1042 if (r)
1043 return r;
1044
1045 dev_info(zd_chip_dev(chip),"firmware version %04hx\n", version);
1046 return 0;
1047}
1048
1049static int set_mandatory_rates(struct zd_chip *chip, enum ieee80211_std std)
1050{
1051 u32 rates;
1052 ZD_ASSERT(mutex_is_locked(&chip->mutex));
1053 /* This sets the mandatory rates, which only depend from the standard
1054 * that the device is supporting. Until further notice we should try
1055 * to support 802.11g also for full speed USB.
1056 */
1057 switch (std) {
1058 case IEEE80211B:
1059 rates = CR_RATE_1M|CR_RATE_2M|CR_RATE_5_5M|CR_RATE_11M;
1060 break;
1061 case IEEE80211G:
1062 rates = CR_RATE_1M|CR_RATE_2M|CR_RATE_5_5M|CR_RATE_11M|
1063 CR_RATE_6M|CR_RATE_12M|CR_RATE_24M;
1064 break;
1065 default:
1066 return -EINVAL;
1067 }
1068 return zd_iowrite32_locked(chip, rates, CR_MANDATORY_RATE_TBL);
1069}
1070
1071int zd_chip_enable_hwint(struct zd_chip *chip)
1072{
1073 int r;
1074
1075 mutex_lock(&chip->mutex);
1076 r = zd_iowrite32_locked(chip, HWINT_ENABLED, CR_INTERRUPT);
1077 mutex_unlock(&chip->mutex);
1078 return r;
1079}
1080
1081static int disable_hwint(struct zd_chip *chip)
1082{
1083 return zd_iowrite32_locked(chip, HWINT_DISABLED, CR_INTERRUPT);
1084}
1085
1086int zd_chip_disable_hwint(struct zd_chip *chip)
1087{
1088 int r;
1089
1090 mutex_lock(&chip->mutex);
1091 r = disable_hwint(chip);
1092 mutex_unlock(&chip->mutex);
1093 return r;
1094}
1095
1096int zd_chip_init_hw(struct zd_chip *chip, u8 device_type)
1097{
1098 int r;
1099 u8 rf_type;
1100
1101 dev_dbg_f(zd_chip_dev(chip), "\n");
1102
1103 mutex_lock(&chip->mutex);
1104 chip->is_zd1211b = (device_type == DEVICE_ZD1211B) != 0;
1105
1106#ifdef DEBUG
1107 r = test_init(chip);
1108 if (r)
1109 goto out;
1110#endif
1111 r = zd_iowrite32_locked(chip, 1, CR_AFTER_PNP);
1112 if (r)
1113 goto out;
1114
1115 r = zd_usb_init_hw(&chip->usb);
1116 if (r)
1117 goto out;
1118
1119 /* GPI is always disabled, also in the other driver.
1120 */
1121 r = zd_iowrite32_locked(chip, 0, CR_GPI_EN);
1122 if (r)
1123 goto out;
1124 r = zd_iowrite32_locked(chip, CWIN_SIZE, CR_CWMIN_CWMAX);
1125 if (r)
1126 goto out;
1127 /* Currently we support IEEE 802.11g for full and high speed USB.
1128 * It might be discussed, whether we should suppport pure b mode for
1129 * full speed USB.
1130 */
1131 r = set_mandatory_rates(chip, IEEE80211G);
1132 if (r)
1133 goto out;
1134 /* Disabling interrupts is certainly a smart thing here.
1135 */
1136 r = disable_hwint(chip);
1137 if (r)
1138 goto out;
1139 r = read_pod(chip, &rf_type);
1140 if (r)
1141 goto out;
1142 r = hw_init(chip);
1143 if (r)
1144 goto out;
1145 r = zd_rf_init_hw(&chip->rf, rf_type);
1146 if (r)
1147 goto out;
1148
1149 r = print_fw_version(chip);
1150 if (r)
1151 goto out;
1152
1153#ifdef DEBUG
1154 dump_fw_registers(chip);
1155 r = test_init(chip);
1156 if (r)
1157 goto out;
1158#endif /* DEBUG */
1159
1160 r = read_e2p_mac_addr(chip);
1161 if (r)
1162 goto out;
1163
1164 r = read_cal_int_tables(chip);
1165 if (r)
1166 goto out;
1167
1168 print_id(chip);
1169out:
1170 mutex_unlock(&chip->mutex);
1171 return r;
1172}
1173
1174static int update_pwr_int(struct zd_chip *chip, u8 channel)
1175{
1176 u8 value = chip->pwr_int_values[channel - 1];
1177 dev_dbg_f(zd_chip_dev(chip), "channel %d pwr_int %#04x\n",
1178 channel, value);
1179 return zd_iowrite32_locked(chip, value, CR31);
1180}
1181
1182static int update_pwr_cal(struct zd_chip *chip, u8 channel)
1183{
1184 u8 value = chip->pwr_cal_values[channel-1];
1185 dev_dbg_f(zd_chip_dev(chip), "channel %d pwr_cal %#04x\n",
1186 channel, value);
1187 return zd_iowrite32_locked(chip, value, CR68);
1188}
1189
1190static int update_ofdm_cal(struct zd_chip *chip, u8 channel)
1191{
1192 struct zd_ioreq32 ioreqs[3];
1193
1194 ioreqs[0].addr = CR67;
1195 ioreqs[0].value = chip->ofdm_cal_values[OFDM_36M_INDEX][channel-1];
1196 ioreqs[1].addr = CR66;
1197 ioreqs[1].value = chip->ofdm_cal_values[OFDM_48M_INDEX][channel-1];
1198 ioreqs[2].addr = CR65;
1199 ioreqs[2].value = chip->ofdm_cal_values[OFDM_54M_INDEX][channel-1];
1200
1201 dev_dbg_f(zd_chip_dev(chip),
1202 "channel %d ofdm_cal 36M %#04x 48M %#04x 54M %#04x\n",
1203 channel, ioreqs[0].value, ioreqs[1].value, ioreqs[2].value);
1204 return zd_iowrite32a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
1205}
1206
1207static int update_channel_integration_and_calibration(struct zd_chip *chip,
1208 u8 channel)
1209{
1210 int r;
1211
1212 r = update_pwr_int(chip, channel);
1213 if (r)
1214 return r;
1215 if (chip->is_zd1211b) {
1216 static const struct zd_ioreq32 ioreqs[] = {
1217 { CR69, 0x28 },
1218 {},
1219 { CR69, 0x2a },
1220 };
1221
1222 r = update_ofdm_cal(chip, channel);
1223 if (r)
1224 return r;
1225 r = update_pwr_cal(chip, channel);
1226 if (r)
1227 return r;
1228 r = zd_iowrite32a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
1229 if (r)
1230 return r;
1231 }
1232
1233 return 0;
1234}
1235
1236/* The CCK baseband gain can be optionally patched by the EEPROM */
1237static int patch_cck_gain(struct zd_chip *chip)
1238{
1239 int r;
1240 u32 value;
1241
1242 if (!chip->patch_cck_gain)
1243 return 0;
1244
1245 ZD_ASSERT(mutex_is_locked(&chip->mutex));
1246 r = zd_ioread32_locked(chip, &value, E2P_PHY_REG);
1247 if (r)
1248 return r;
1249 dev_dbg_f(zd_chip_dev(chip), "patching value %x\n", value & 0xff);
1250 return zd_iowrite32_locked(chip, value & 0xff, CR47);
1251}
1252
1253int zd_chip_set_channel(struct zd_chip *chip, u8 channel)
1254{
1255 int r, t;
1256
1257 mutex_lock(&chip->mutex);
1258 r = zd_chip_lock_phy_regs(chip);
1259 if (r)
1260 goto out;
1261 r = zd_rf_set_channel(&chip->rf, channel);
1262 if (r)
1263 goto unlock;
1264 r = update_channel_integration_and_calibration(chip, channel);
1265 if (r)
1266 goto unlock;
1267 r = patch_cck_gain(chip);
1268 if (r)
1269 goto unlock;
1270 r = patch_6m_band_edge(chip, channel);
1271 if (r)
1272 goto unlock;
1273 r = zd_iowrite32_locked(chip, 0, CR_CONFIG_PHILIPS);
1274unlock:
1275 t = zd_chip_unlock_phy_regs(chip);
1276 if (t && !r)
1277 r = t;
1278out:
1279 mutex_unlock(&chip->mutex);
1280 return r;
1281}
1282
1283u8 zd_chip_get_channel(struct zd_chip *chip)
1284{
1285 u8 channel;
1286
1287 mutex_lock(&chip->mutex);
1288 channel = chip->rf.channel;
1289 mutex_unlock(&chip->mutex);
1290 return channel;
1291}
1292
1293static u16 led_mask(int led)
1294{
1295 switch (led) {
1296 case 1:
1297 return LED1;
1298 case 2:
1299 return LED2;
1300 default:
1301 return 0;
1302 }
1303}
1304
1305static int read_led_reg(struct zd_chip *chip, u16 *status)
1306{
1307 ZD_ASSERT(mutex_is_locked(&chip->mutex));
1308 return zd_ioread16_locked(chip, status, CR_LED);
1309}
1310
1311static int write_led_reg(struct zd_chip *chip, u16 status)
1312{
1313 ZD_ASSERT(mutex_is_locked(&chip->mutex));
1314 return zd_iowrite16_locked(chip, status, CR_LED);
1315}
1316
1317int zd_chip_led_status(struct zd_chip *chip, int led, enum led_status status)
1318{
1319 int r, ret;
1320 u16 mask = led_mask(led);
1321 u16 reg;
1322
1323 if (!mask)
1324 return -EINVAL;
1325 mutex_lock(&chip->mutex);
1326 r = read_led_reg(chip, &reg);
1327 if (r)
1328 return r;
1329 switch (status) {
1330 case LED_STATUS:
1331 return (reg & mask) ? LED_ON : LED_OFF;
1332 case LED_OFF:
1333 reg &= ~mask;
1334 ret = LED_OFF;
1335 break;
1336 case LED_FLIP:
1337 reg ^= mask;
1338 ret = (reg&mask) ? LED_ON : LED_OFF;
1339 break;
1340 case LED_ON:
1341 reg |= mask;
1342 ret = LED_ON;
1343 break;
1344 default:
1345 return -EINVAL;
1346 }
1347 r = write_led_reg(chip, reg);
1348 if (r) {
1349 ret = r;
1350 goto out;
1351 }
1352out:
1353 mutex_unlock(&chip->mutex);
1354 return r;
1355}
1356
1357int zd_chip_led_flip(struct zd_chip *chip, int led,
1358 const unsigned int *phases_msecs, unsigned int count)
1359{
1360 int i, r;
1361 enum led_status status;
1362
1363 r = zd_chip_led_status(chip, led, LED_STATUS);
1364 if (r)
1365 return r;
1366 status = r;
1367 for (i = 0; i < count; i++) {
1368 r = zd_chip_led_status(chip, led, LED_FLIP);
1369 if (r < 0)
1370 goto out;
1371 msleep(phases_msecs[i]);
1372 }
1373
1374out:
1375 zd_chip_led_status(chip, led, status);
1376 return r;
1377}
1378
1379int zd_chip_set_basic_rates(struct zd_chip *chip, u16 cr_rates)
1380{
1381 int r;
1382
1383 if (cr_rates & ~(CR_RATES_80211B|CR_RATES_80211G))
1384 return -EINVAL;
1385
1386 mutex_lock(&chip->mutex);
1387 r = zd_iowrite32_locked(chip, cr_rates, CR_BASIC_RATE_TBL);
1388 mutex_unlock(&chip->mutex);
1389 return r;
1390}
1391
1392static int ofdm_qual_db(u8 status_quality, u8 rate, unsigned int size)
1393{
1394 static const u16 constants[] = {
1395 715, 655, 585, 540, 470, 410, 360, 315,
1396 270, 235, 205, 175, 150, 125, 105, 85,
1397 65, 50, 40, 25, 15
1398 };
1399
1400 int i;
1401 u32 x;
1402
1403 /* It seems that their quality parameter is somehow per signal
1404 * and is now transferred per bit.
1405 */
1406 switch (rate) {
1407 case ZD_OFDM_RATE_6M:
1408 case ZD_OFDM_RATE_12M:
1409 case ZD_OFDM_RATE_24M:
1410 size *= 2;
1411 break;
1412 case ZD_OFDM_RATE_9M:
1413 case ZD_OFDM_RATE_18M:
1414 case ZD_OFDM_RATE_36M:
1415 case ZD_OFDM_RATE_54M:
1416 size *= 4;
1417 size /= 3;
1418 break;
1419 case ZD_OFDM_RATE_48M:
1420 size *= 3;
1421 size /= 2;
1422 break;
1423 default:
1424 return -EINVAL;
1425 }
1426
1427 x = (10000 * status_quality)/size;
1428 for (i = 0; i < ARRAY_SIZE(constants); i++) {
1429 if (x > constants[i])
1430 break;
1431 }
1432
1433 return i;
1434}
1435
1436static unsigned int log10times100(unsigned int x)
1437{
1438 static const u8 log10[] = {
1439 0,
1440 0, 30, 47, 60, 69, 77, 84, 90, 95, 100,
1441 104, 107, 111, 114, 117, 120, 123, 125, 127, 130,
1442 132, 134, 136, 138, 139, 141, 143, 144, 146, 147,
1443 149, 150, 151, 153, 154, 155, 156, 157, 159, 160,
1444 161, 162, 163, 164, 165, 166, 167, 168, 169, 169,
1445 170, 171, 172, 173, 174, 174, 175, 176, 177, 177,
1446 178, 179, 179, 180, 181, 181, 182, 183, 183, 184,
1447 185, 185, 186, 186, 187, 188, 188, 189, 189, 190,
1448 190, 191, 191, 192, 192, 193, 193, 194, 194, 195,
1449 195, 196, 196, 197, 197, 198, 198, 199, 199, 200,
1450 200, 200, 201, 201, 202, 202, 202, 203, 203, 204,
1451 204, 204, 205, 205, 206, 206, 206, 207, 207, 207,
1452 208, 208, 208, 209, 209, 210, 210, 210, 211, 211,
1453 211, 212, 212, 212, 213, 213, 213, 213, 214, 214,
1454 214, 215, 215, 215, 216, 216, 216, 217, 217, 217,
1455 217, 218, 218, 218, 219, 219, 219, 219, 220, 220,
1456 220, 220, 221, 221, 221, 222, 222, 222, 222, 223,
1457 223, 223, 223, 224, 224, 224, 224,
1458 };
1459
1460 return x < ARRAY_SIZE(log10) ? log10[x] : 225;
1461}
1462
1463enum {
1464 MAX_CCK_EVM_DB = 45,
1465};
1466
1467static int cck_evm_db(u8 status_quality)
1468{
1469 return (20 * log10times100(status_quality)) / 100;
1470}
1471
1472static int cck_snr_db(u8 status_quality)
1473{
1474 int r = MAX_CCK_EVM_DB - cck_evm_db(status_quality);
1475 ZD_ASSERT(r >= 0);
1476 return r;
1477}
1478
1479static int rx_qual_db(const void *rx_frame, unsigned int size,
1480 const struct rx_status *status)
1481{
1482 return (status->frame_status&ZD_RX_OFDM) ?
1483 ofdm_qual_db(status->signal_quality_ofdm,
1484 zd_ofdm_plcp_header_rate(rx_frame),
1485 size) :
1486 cck_snr_db(status->signal_quality_cck);
1487}
1488
1489u8 zd_rx_qual_percent(const void *rx_frame, unsigned int size,
1490 const struct rx_status *status)
1491{
1492 int r = rx_qual_db(rx_frame, size, status);
1493 if (r < 0)
1494 r = 0;
1495 r = (r * 100) / 14;
1496 if (r > 100)
1497 r = 100;
1498 return r;
1499}
1500
1501u8 zd_rx_strength_percent(u8 rssi)
1502{
1503 int r = (rssi*100) / 30;
1504 if (r > 100)
1505 r = 100;
1506 return (u8) r;
1507}
1508
1509u16 zd_rx_rate(const void *rx_frame, const struct rx_status *status)
1510{
1511 static const u16 ofdm_rates[] = {
1512 [ZD_OFDM_RATE_6M] = 60,
1513 [ZD_OFDM_RATE_9M] = 90,
1514 [ZD_OFDM_RATE_12M] = 120,
1515 [ZD_OFDM_RATE_18M] = 180,
1516 [ZD_OFDM_RATE_24M] = 240,
1517 [ZD_OFDM_RATE_36M] = 360,
1518 [ZD_OFDM_RATE_48M] = 480,
1519 [ZD_OFDM_RATE_54M] = 540,
1520 };
1521 u16 rate;
1522 if (status->frame_status & ZD_RX_OFDM) {
1523 u8 ofdm_rate = zd_ofdm_plcp_header_rate(rx_frame);
1524 rate = ofdm_rates[ofdm_rate & 0xf];
1525 } else {
1526 u8 cck_rate = zd_cck_plcp_header_rate(rx_frame);
1527 switch (cck_rate) {
1528 case ZD_CCK_SIGNAL_1M:
1529 rate = 10;
1530 break;
1531 case ZD_CCK_SIGNAL_2M:
1532 rate = 20;
1533 break;
1534 case ZD_CCK_SIGNAL_5M5:
1535 rate = 55;
1536 break;
1537 case ZD_CCK_SIGNAL_11M:
1538 rate = 110;
1539 break;
1540 default:
1541 rate = 0;
1542 }
1543 }
1544
1545 return rate;
1546}
1547
1548int zd_chip_switch_radio_on(struct zd_chip *chip)
1549{
1550 int r;
1551
1552 mutex_lock(&chip->mutex);
1553 r = zd_switch_radio_on(&chip->rf);
1554 mutex_unlock(&chip->mutex);
1555 return r;
1556}
1557
1558int zd_chip_switch_radio_off(struct zd_chip *chip)
1559{
1560 int r;
1561
1562 mutex_lock(&chip->mutex);
1563 r = zd_switch_radio_off(&chip->rf);
1564 mutex_unlock(&chip->mutex);
1565 return r;
1566}
1567
1568int zd_chip_enable_int(struct zd_chip *chip)
1569{
1570 int r;
1571
1572 mutex_lock(&chip->mutex);
1573 r = zd_usb_enable_int(&chip->usb);
1574 mutex_unlock(&chip->mutex);
1575 return r;
1576}
1577
1578void zd_chip_disable_int(struct zd_chip *chip)
1579{
1580 mutex_lock(&chip->mutex);
1581 zd_usb_disable_int(&chip->usb);
1582 mutex_unlock(&chip->mutex);
1583}
1584
1585int zd_chip_enable_rx(struct zd_chip *chip)
1586{
1587 int r;
1588
1589 mutex_lock(&chip->mutex);
1590 r = zd_usb_enable_rx(&chip->usb);
1591 mutex_unlock(&chip->mutex);
1592 return r;
1593}
1594
1595void zd_chip_disable_rx(struct zd_chip *chip)
1596{
1597 mutex_lock(&chip->mutex);
1598 zd_usb_disable_rx(&chip->usb);
1599 mutex_unlock(&chip->mutex);
1600}
1601
1602int zd_rfwritev_locked(struct zd_chip *chip,
1603 const u32* values, unsigned int count, u8 bits)
1604{
1605 int r;
1606 unsigned int i;
1607
1608 for (i = 0; i < count; i++) {
1609 r = zd_rfwrite_locked(chip, values[i], bits);
1610 if (r)
1611 return r;
1612 }
1613
1614 return 0;
1615}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-30 15:10:44 -0500