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relay: fix "full buffer with exactly full last subbuffer" accounting problem
[linux-2.6/kmemtrace.git] / drivers / net / chelsio / pm3393.c
blob2117c4fbb10724aeee68cbb6b7372e4e3a703515
1 /*****************************************************************************
2 * *
3 * File: pm3393.c *
4 * $Revision: 1.16 $ *
5 * $Date: 2005/05/14 00:59:32 $ *
6 * Description: *
7 * PMC/SIERRA (pm3393) MAC-PHY functionality. *
8 * part of the Chelsio 10Gb Ethernet Driver. *
9 * *
10 * This program is free software; you can redistribute it and/or modify *
11 * it under the terms of the GNU General Public License, version 2, as *
12 * published by the Free Software Foundation. *
13 * *
14 * You should have received a copy of the GNU General Public License along *
15 * with this program; if not, write to the Free Software Foundation, Inc., *
16 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
17 * *
18 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED *
19 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF *
20 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. *
21 * *
22 * http://www.chelsio.com *
23 * *
24 * Copyright (c) 2003 - 2005 Chelsio Communications, Inc. *
25 * All rights reserved. *
26 * *
27 * Maintainers: maintainers@chelsio.com *
28 * *
29 * Authors: Dimitrios Michailidis <dm@chelsio.com> *
30 * Tina Yang <tainay@chelsio.com> *
31 * Felix Marti <felix@chelsio.com> *
32 * Scott Bardone <sbardone@chelsio.com> *
33 * Kurt Ottaway <kottaway@chelsio.com> *
34 * Frank DiMambro <frank@chelsio.com> *
35 * *
36 * History: *
37 * *
38 ****************************************************************************/
39
40 #include "common.h"
41 #include "regs.h"
42 #include "gmac.h"
43 #include "elmer0.h"
44 #include "suni1x10gexp_regs.h"
45
46 #include <linux/crc32.h>
47
48 #define OFFSET(REG_ADDR) ((REG_ADDR) << 2)
49
50 /* Max frame size PM3393 can handle. Includes Ethernet header and CRC. */
51 #define MAX_FRAME_SIZE 9600
52
53 #define IPG 12
54 #define TXXG_CONF1_VAL ((IPG << SUNI1x10GEXP_BITOFF_TXXG_IPGT) | \
55 SUNI1x10GEXP_BITMSK_TXXG_32BIT_ALIGN | SUNI1x10GEXP_BITMSK_TXXG_CRCEN | \
56 SUNI1x10GEXP_BITMSK_TXXG_PADEN)
57 #define RXXG_CONF1_VAL (SUNI1x10GEXP_BITMSK_RXXG_PUREP | 0x14 | \
58 SUNI1x10GEXP_BITMSK_RXXG_FLCHK | SUNI1x10GEXP_BITMSK_RXXG_CRC_STRIP)
59
60 /* Update statistics every 15 minutes */
61 #define STATS_TICK_SECS (15 * 60)
62
63 enum { /* RMON registers */
64 RxOctetsReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_1_LOW,
65 RxUnicastFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_4_LOW,
66 RxMulticastFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_5_LOW,
67 RxBroadcastFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_6_LOW,
68 RxPAUSEMACCtrlFramesReceived = SUNI1x10GEXP_REG_MSTAT_COUNTER_8_LOW,
69 RxFrameCheckSequenceErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_10_LOW,
70 RxFramesLostDueToInternalMACErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_11_LOW,
71 RxSymbolErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_12_LOW,
72 RxInRangeLengthErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_13_LOW,
73 RxFramesTooLongErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_15_LOW,
74 RxJabbers = SUNI1x10GEXP_REG_MSTAT_COUNTER_16_LOW,
75 RxFragments = SUNI1x10GEXP_REG_MSTAT_COUNTER_17_LOW,
76 RxUndersizedFrames = SUNI1x10GEXP_REG_MSTAT_COUNTER_18_LOW,
77 RxJumboFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_25_LOW,
78 RxJumboOctetsReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_26_LOW,
79
80 TxOctetsTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_33_LOW,
81 TxFramesLostDueToInternalMACTransmissionError = SUNI1x10GEXP_REG_MSTAT_COUNTER_35_LOW,
82 TxTransmitSystemError = SUNI1x10GEXP_REG_MSTAT_COUNTER_36_LOW,
83 TxUnicastFramesTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_38_LOW,
84 TxMulticastFramesTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_40_LOW,
85 TxBroadcastFramesTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_42_LOW,
86 TxPAUSEMACCtrlFramesTransmitted = SUNI1x10GEXP_REG_MSTAT_COUNTER_43_LOW,
87 TxJumboFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_51_LOW,
88 TxJumboOctetsReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_52_LOW
89 };
90
91 struct _cmac_instance {
92 u8 enabled;
93 u8 fc;
94 u8 mac_addr[6];
95 };
96
97 static int pmread(struct cmac *cmac, u32 reg, u32 * data32)
98 {
99 t1_tpi_read(cmac->adapter, OFFSET(reg), data32);
100 return 0;
101 }
102
103 static int pmwrite(struct cmac *cmac, u32 reg, u32 data32)
104 {
105 t1_tpi_write(cmac->adapter, OFFSET(reg), data32);
106 return 0;
107 }
108
109 /* Port reset. */
110 static int pm3393_reset(struct cmac *cmac)
111 {
112 return 0;
113 }
114
115 /*
116 * Enable interrupts for the PM3393
117 *
118 * 1. Enable PM3393 BLOCK interrupts.
119 * 2. Enable PM3393 Master Interrupt bit(INTE)
120 * 3. Enable ELMER's PM3393 bit.
121 * 4. Enable Terminator external interrupt.
122 */
123 static int pm3393_interrupt_enable(struct cmac *cmac)
124 {
125 u32 pl_intr;
126
127 /* PM3393 - Enabling all hardware block interrupts.
128 */
129 pmwrite(cmac, SUNI1x10GEXP_REG_SERDES_3125_INTERRUPT_ENABLE, 0xffff);
130 pmwrite(cmac, SUNI1x10GEXP_REG_XRF_INTERRUPT_ENABLE, 0xffff);
131 pmwrite(cmac, SUNI1x10GEXP_REG_XRF_DIAG_INTERRUPT_ENABLE, 0xffff);
132 pmwrite(cmac, SUNI1x10GEXP_REG_RXOAM_INTERRUPT_ENABLE, 0xffff);
133
134 /* Don't interrupt on statistics overflow, we are polling */
135 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_0, 0);
136 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_1, 0);
137 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_2, 0);
138 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_3, 0);
139
140 pmwrite(cmac, SUNI1x10GEXP_REG_IFLX_FIFO_OVERFLOW_ENABLE, 0xffff);
141 pmwrite(cmac, SUNI1x10GEXP_REG_PL4ODP_INTERRUPT_MASK, 0xffff);
142 pmwrite(cmac, SUNI1x10GEXP_REG_XTEF_INTERRUPT_ENABLE, 0xffff);
143 pmwrite(cmac, SUNI1x10GEXP_REG_TXOAM_INTERRUPT_ENABLE, 0xffff);
144 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_3, 0xffff);
145 pmwrite(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_MASK, 0xffff);
146 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_3, 0xffff);
147 pmwrite(cmac, SUNI1x10GEXP_REG_PL4IDU_INTERRUPT_MASK, 0xffff);
148 pmwrite(cmac, SUNI1x10GEXP_REG_EFLX_FIFO_OVERFLOW_ERROR_ENABLE, 0xffff);
149
150 /* PM3393 - Global interrupt enable
151 */
152 /* TBD XXX Disable for now until we figure out why error interrupts keep asserting. */
153 pmwrite(cmac, SUNI1x10GEXP_REG_GLOBAL_INTERRUPT_ENABLE,
154 0 /*SUNI1x10GEXP_BITMSK_TOP_INTE */ );
155
156 /* TERMINATOR - PL_INTERUPTS_EXT */
157 pl_intr = readl(cmac->adapter->regs + A_PL_ENABLE);
158 pl_intr |= F_PL_INTR_EXT;
159 writel(pl_intr, cmac->adapter->regs + A_PL_ENABLE);
160 return 0;
161 }
162
163 static int pm3393_interrupt_disable(struct cmac *cmac)
164 {
165 u32 elmer;
166
167 /* PM3393 - Enabling HW interrupt blocks. */
168 pmwrite(cmac, SUNI1x10GEXP_REG_SERDES_3125_INTERRUPT_ENABLE, 0);
169 pmwrite(cmac, SUNI1x10GEXP_REG_XRF_INTERRUPT_ENABLE, 0);
170 pmwrite(cmac, SUNI1x10GEXP_REG_XRF_DIAG_INTERRUPT_ENABLE, 0);
171 pmwrite(cmac, SUNI1x10GEXP_REG_RXOAM_INTERRUPT_ENABLE, 0);
172 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_0, 0);
173 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_1, 0);
174 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_2, 0);
175 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_3, 0);
176 pmwrite(cmac, SUNI1x10GEXP_REG_IFLX_FIFO_OVERFLOW_ENABLE, 0);
177 pmwrite(cmac, SUNI1x10GEXP_REG_PL4ODP_INTERRUPT_MASK, 0);
178 pmwrite(cmac, SUNI1x10GEXP_REG_XTEF_INTERRUPT_ENABLE, 0);
179 pmwrite(cmac, SUNI1x10GEXP_REG_TXOAM_INTERRUPT_ENABLE, 0);
180 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_3, 0);
181 pmwrite(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_MASK, 0);
182 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_3, 0);
183 pmwrite(cmac, SUNI1x10GEXP_REG_PL4IDU_INTERRUPT_MASK, 0);
184 pmwrite(cmac, SUNI1x10GEXP_REG_EFLX_FIFO_OVERFLOW_ERROR_ENABLE, 0);
185
186 /* PM3393 - Global interrupt enable */
187 pmwrite(cmac, SUNI1x10GEXP_REG_GLOBAL_INTERRUPT_ENABLE, 0);
188
189 /* ELMER - External chip interrupts. */
190 t1_tpi_read(cmac->adapter, A_ELMER0_INT_ENABLE, &elmer);
191 elmer &= ~ELMER0_GP_BIT1;
192 t1_tpi_write(cmac->adapter, A_ELMER0_INT_ENABLE, elmer);
193
194 /* TERMINATOR - PL_INTERUPTS_EXT */
195 /* DO NOT DISABLE TERMINATOR's EXTERNAL INTERRUPTS. ANOTHER CHIP
196 * COULD WANT THEM ENABLED. We disable PM3393 at the ELMER level.
197 */
198
199 return 0;
200 }
201
202 static int pm3393_interrupt_clear(struct cmac *cmac)
203 {
204 u32 elmer;
205 u32 pl_intr;
206 u32 val32;
207
208 /* PM3393 - Clearing HW interrupt blocks. Note, this assumes
209 * bit WCIMODE=0 for a clear-on-read.
210 */
211 pmread(cmac, SUNI1x10GEXP_REG_SERDES_3125_INTERRUPT_STATUS, &val32);
212 pmread(cmac, SUNI1x10GEXP_REG_XRF_INTERRUPT_STATUS, &val32);
213 pmread(cmac, SUNI1x10GEXP_REG_XRF_DIAG_INTERRUPT_STATUS, &val32);
214 pmread(cmac, SUNI1x10GEXP_REG_RXOAM_INTERRUPT_STATUS, &val32);
215 pmread(cmac, SUNI1x10GEXP_REG_PL4ODP_INTERRUPT, &val32);
216 pmread(cmac, SUNI1x10GEXP_REG_XTEF_INTERRUPT_STATUS, &val32);
217 pmread(cmac, SUNI1x10GEXP_REG_IFLX_FIFO_OVERFLOW_INTERRUPT, &val32);
218 pmread(cmac, SUNI1x10GEXP_REG_TXOAM_INTERRUPT_STATUS, &val32);
219 pmread(cmac, SUNI1x10GEXP_REG_RXXG_INTERRUPT, &val32);
220 pmread(cmac, SUNI1x10GEXP_REG_TXXG_INTERRUPT, &val32);
221 pmread(cmac, SUNI1x10GEXP_REG_PL4IDU_INTERRUPT, &val32);
222 pmread(cmac, SUNI1x10GEXP_REG_EFLX_FIFO_OVERFLOW_ERROR_INDICATION,
223 &val32);
224 pmread(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_STATUS, &val32);
225 pmread(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_CHANGE, &val32);
226
227 /* PM3393 - Global interrupt status
228 */
229 pmread(cmac, SUNI1x10GEXP_REG_MASTER_INTERRUPT_STATUS, &val32);
230
231 /* ELMER - External chip interrupts.
232 */
233 t1_tpi_read(cmac->adapter, A_ELMER0_INT_CAUSE, &elmer);
234 elmer |= ELMER0_GP_BIT1;
235 t1_tpi_write(cmac->adapter, A_ELMER0_INT_CAUSE, elmer);
236
237 /* TERMINATOR - PL_INTERUPTS_EXT
238 */
239 pl_intr = readl(cmac->adapter->regs + A_PL_CAUSE);
240 pl_intr |= F_PL_INTR_EXT;
241 writel(pl_intr, cmac->adapter->regs + A_PL_CAUSE);
242
243 return 0;
244 }
245
246 /* Interrupt handler */
247 static int pm3393_interrupt_handler(struct cmac *cmac)
248 {
249 u32 master_intr_status;
250
251 /* Read the master interrupt status register. */
252 pmread(cmac, SUNI1x10GEXP_REG_MASTER_INTERRUPT_STATUS,
253 &master_intr_status);
254 CH_DBG(cmac->adapter, INTR, "PM3393 intr cause 0x%x\n",
255 master_intr_status);
256
257 /* TBD XXX Lets just clear everything for now */
258 pm3393_interrupt_clear(cmac);
259
260 return 0;
261 }
262
263 static int pm3393_enable(struct cmac *cmac, int which)
264 {
265 if (which & MAC_DIRECTION_RX)
266 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_1,
267 (RXXG_CONF1_VAL | SUNI1x10GEXP_BITMSK_RXXG_RXEN));
268
269 if (which & MAC_DIRECTION_TX) {
270 u32 val = TXXG_CONF1_VAL | SUNI1x10GEXP_BITMSK_TXXG_TXEN0;
271
272 if (cmac->instance->fc & PAUSE_RX)
273 val |= SUNI1x10GEXP_BITMSK_TXXG_FCRX;
274 if (cmac->instance->fc & PAUSE_TX)
275 val |= SUNI1x10GEXP_BITMSK_TXXG_FCTX;
276 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_1, val);
277 }
278
279 cmac->instance->enabled |= which;
280 return 0;
281 }
282
283 static int pm3393_enable_port(struct cmac *cmac, int which)
284 {
285 /* Clear port statistics */
286 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_CONTROL,
287 SUNI1x10GEXP_BITMSK_MSTAT_CLEAR);
288 udelay(2);
289 memset(&cmac->stats, 0, sizeof(struct cmac_statistics));
290
291 pm3393_enable(cmac, which);
292
293 /*
294 * XXX This should be done by the PHY and preferrably not at all.
295 * The PHY doesn't give us link status indication on its own so have
296 * the link management code query it instead.
297 */
298 t1_link_changed(cmac->adapter, 0);
299 return 0;
300 }
301
302 static int pm3393_disable(struct cmac *cmac, int which)
303 {
304 if (which & MAC_DIRECTION_RX)
305 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_1, RXXG_CONF1_VAL);
306 if (which & MAC_DIRECTION_TX)
307 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_1, TXXG_CONF1_VAL);
308
309 /*
310 * The disable is graceful. Give the PM3393 time. Can't wait very
311 * long here, we may be holding locks.
312 */
313 udelay(20);
314
315 cmac->instance->enabled &= ~which;
316 return 0;
317 }
318
319 static int pm3393_loopback_enable(struct cmac *cmac)
320 {
321 return 0;
322 }
323
324 static int pm3393_loopback_disable(struct cmac *cmac)
325 {
326 return 0;
327 }
328
329 static int pm3393_set_mtu(struct cmac *cmac, int mtu)
330 {
331 int enabled = cmac->instance->enabled;
332
333 /* MAX_FRAME_SIZE includes header + FCS, mtu doesn't */
334 mtu += 14 + 4;
335 if (mtu > MAX_FRAME_SIZE)
336 return -EINVAL;
337
338 /* Disable Rx/Tx MAC before configuring it. */
339 if (enabled)
340 pm3393_disable(cmac, MAC_DIRECTION_RX | MAC_DIRECTION_TX);
341
342 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MAX_FRAME_LENGTH, mtu);
343 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_MAX_FRAME_SIZE, mtu);
344
345 if (enabled)
346 pm3393_enable(cmac, enabled);
347 return 0;
348 }
349
350 static int pm3393_set_rx_mode(struct cmac *cmac, struct t1_rx_mode *rm)
351 {
352 int enabled = cmac->instance->enabled & MAC_DIRECTION_RX;
353 u32 rx_mode;
354
355 /* Disable MAC RX before reconfiguring it */
356 if (enabled)
357 pm3393_disable(cmac, MAC_DIRECTION_RX);
358
359 pmread(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_2, &rx_mode);
360 rx_mode &= ~(SUNI1x10GEXP_BITMSK_RXXG_PMODE |
361 SUNI1x10GEXP_BITMSK_RXXG_MHASH_EN);
362 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_2,
363 (u16)rx_mode);
364
365 if (t1_rx_mode_promisc(rm)) {
366 /* Promiscuous mode. */
367 rx_mode |= SUNI1x10GEXP_BITMSK_RXXG_PMODE;
368 }
369 if (t1_rx_mode_allmulti(rm)) {
370 /* Accept all multicast. */
371 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_LOW, 0xffff);
372 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDLOW, 0xffff);
373 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDHIGH, 0xffff);
374 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_HIGH, 0xffff);
375 rx_mode |= SUNI1x10GEXP_BITMSK_RXXG_MHASH_EN;
376 } else if (t1_rx_mode_mc_cnt(rm)) {
377 /* Accept one or more multicast(s). */
378 u8 *addr;
379 int bit;
380 u16 mc_filter[4] = { 0, };
381
382 while ((addr = t1_get_next_mcaddr(rm))) {
383 bit = (ether_crc(ETH_ALEN, addr) >> 23) & 0x3f; /* bit[23:28] */
384 mc_filter[bit >> 4] |= 1 << (bit & 0xf);
385 }
386 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_LOW, mc_filter[0]);
387 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDLOW, mc_filter[1]);
388 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDHIGH, mc_filter[2]);
389 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_HIGH, mc_filter[3]);
390 rx_mode |= SUNI1x10GEXP_BITMSK_RXXG_MHASH_EN;
391 }
392
393 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_2, (u16)rx_mode);
394
395 if (enabled)
396 pm3393_enable(cmac, MAC_DIRECTION_RX);
397
398 return 0;
399 }
400
401 static int pm3393_get_speed_duplex_fc(struct cmac *cmac, int *speed,
402 int *duplex, int *fc)
403 {
404 if (speed)
405 *speed = SPEED_10000;
406 if (duplex)
407 *duplex = DUPLEX_FULL;
408 if (fc)
409 *fc = cmac->instance->fc;
410 return 0;
411 }
412
413 static int pm3393_set_speed_duplex_fc(struct cmac *cmac, int speed, int duplex,
414 int fc)
415 {
416 if (speed >= 0 && speed != SPEED_10000)
417 return -1;
418 if (duplex >= 0 && duplex != DUPLEX_FULL)
419 return -1;
420 if (fc & ~(PAUSE_TX | PAUSE_RX))
421 return -1;
422
423 if (fc != cmac->instance->fc) {
424 cmac->instance->fc = (u8) fc;
425 if (cmac->instance->enabled & MAC_DIRECTION_TX)
426 pm3393_enable(cmac, MAC_DIRECTION_TX);
427 }
428 return 0;
429 }
430
431 #define RMON_UPDATE(mac, name, stat_name) \
432 { \
433 t1_tpi_read((mac)->adapter, OFFSET(name), &val0); \
434 t1_tpi_read((mac)->adapter, OFFSET((name)+1), &val1); \
435 t1_tpi_read((mac)->adapter, OFFSET((name)+2), &val2); \
436 (mac)->stats.stat_name = (u64)(val0 & 0xffff) | \
437 ((u64)(val1 & 0xffff) << 16) | \
438 ((u64)(val2 & 0xff) << 32) | \
439 ((mac)->stats.stat_name & \
440 0xffffff0000000000ULL); \
441 if (ro & \
442 (1ULL << ((name - SUNI1x10GEXP_REG_MSTAT_COUNTER_0_LOW) >> 2))) \
443 (mac)->stats.stat_name += 1ULL << 40; \
444 }
445
446 static const struct cmac_statistics *pm3393_update_statistics(struct cmac *mac,
447 int flag)
448 {
449 u64 ro;
450 u32 val0, val1, val2, val3;
451
452 /* Snap the counters */
453 pmwrite(mac, SUNI1x10GEXP_REG_MSTAT_CONTROL,
454 SUNI1x10GEXP_BITMSK_MSTAT_SNAP);
455
456 /* Counter rollover, clear on read */
457 pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_0, &val0);
458 pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_1, &val1);
459 pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_2, &val2);
460 pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_3, &val3);
461 ro = ((u64)val0 & 0xffff) | (((u64)val1 & 0xffff) << 16) |
462 (((u64)val2 & 0xffff) << 32) | (((u64)val3 & 0xffff) << 48);
463
464 /* Rx stats */
465 RMON_UPDATE(mac, RxOctetsReceivedOK, RxOctetsOK);
466 RMON_UPDATE(mac, RxUnicastFramesReceivedOK, RxUnicastFramesOK);
467 RMON_UPDATE(mac, RxMulticastFramesReceivedOK, RxMulticastFramesOK);
468 RMON_UPDATE(mac, RxBroadcastFramesReceivedOK, RxBroadcastFramesOK);
469 RMON_UPDATE(mac, RxPAUSEMACCtrlFramesReceived, RxPauseFrames);
470 RMON_UPDATE(mac, RxFrameCheckSequenceErrors, RxFCSErrors);
471 RMON_UPDATE(mac, RxFramesLostDueToInternalMACErrors,
472 RxInternalMACRcvError);
473 RMON_UPDATE(mac, RxSymbolErrors, RxSymbolErrors);
474 RMON_UPDATE(mac, RxInRangeLengthErrors, RxInRangeLengthErrors);
475 RMON_UPDATE(mac, RxFramesTooLongErrors , RxFrameTooLongErrors);
476 RMON_UPDATE(mac, RxJabbers, RxJabberErrors);
477 RMON_UPDATE(mac, RxFragments, RxRuntErrors);
478 RMON_UPDATE(mac, RxUndersizedFrames, RxRuntErrors);
479 RMON_UPDATE(mac, RxJumboFramesReceivedOK, RxJumboFramesOK);
480 RMON_UPDATE(mac, RxJumboOctetsReceivedOK, RxJumboOctetsOK);
481
482 /* Tx stats */
483 RMON_UPDATE(mac, TxOctetsTransmittedOK, TxOctetsOK);
484 RMON_UPDATE(mac, TxFramesLostDueToInternalMACTransmissionError,
485 TxInternalMACXmitError);
486 RMON_UPDATE(mac, TxTransmitSystemError, TxFCSErrors);
487 RMON_UPDATE(mac, TxUnicastFramesTransmittedOK, TxUnicastFramesOK);
488 RMON_UPDATE(mac, TxMulticastFramesTransmittedOK, TxMulticastFramesOK);
489 RMON_UPDATE(mac, TxBroadcastFramesTransmittedOK, TxBroadcastFramesOK);
490 RMON_UPDATE(mac, TxPAUSEMACCtrlFramesTransmitted, TxPauseFrames);
491 RMON_UPDATE(mac, TxJumboFramesReceivedOK, TxJumboFramesOK);
492 RMON_UPDATE(mac, TxJumboOctetsReceivedOK, TxJumboOctetsOK);
493
494 return &mac->stats;
495 }
496
497 static int pm3393_macaddress_get(struct cmac *cmac, u8 mac_addr[6])
498 {
499 memcpy(mac_addr, cmac->instance->mac_addr, 6);
500 return 0;
501 }
502
503 static int pm3393_macaddress_set(struct cmac *cmac, u8 ma[6])
504 {
505 u32 val, lo, mid, hi, enabled = cmac->instance->enabled;
506
507 /*
508 * MAC addr: 00:07:43:00:13:09
509 *
510 * ma[5] = 0x09
511 * ma[4] = 0x13
512 * ma[3] = 0x00
513 * ma[2] = 0x43
514 * ma[1] = 0x07
515 * ma[0] = 0x00
516 *
517 * The PM3393 requires byte swapping and reverse order entry
518 * when programming MAC addresses:
519 *
520 * low_bits[15:0] = ma[1]:ma[0]
521 * mid_bits[31:16] = ma[3]:ma[2]
522 * high_bits[47:32] = ma[5]:ma[4]
523 */
524
525 /* Store local copy */
526 memcpy(cmac->instance->mac_addr, ma, 6);
527
528 lo = ((u32) ma[1] << 8) | (u32) ma[0];
529 mid = ((u32) ma[3] << 8) | (u32) ma[2];
530 hi = ((u32) ma[5] << 8) | (u32) ma[4];
531
532 /* Disable Rx/Tx MAC before configuring it. */
533 if (enabled)
534 pm3393_disable(cmac, MAC_DIRECTION_RX | MAC_DIRECTION_TX);
535
536 /* Set RXXG Station Address */
537 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_SA_15_0, lo);
538 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_SA_31_16, mid);
539 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_SA_47_32, hi);
540
541 /* Set TXXG Station Address */
542 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_SA_15_0, lo);
543 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_SA_31_16, mid);
544 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_SA_47_32, hi);
545
546 /* Setup Exact Match Filter 1 with our MAC address
547 *
548 * Must disable exact match filter before configuring it.
549 */
550 pmread(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_0, &val);
551 val &= 0xff0f;
552 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_0, val);
553
554 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_EXACT_MATCH_ADDR_1_LOW, lo);
555 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_EXACT_MATCH_ADDR_1_MID, mid);
556 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_EXACT_MATCH_ADDR_1_HIGH, hi);
557
558 val |= 0x0090;
559 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_0, val);
560
561 if (enabled)
562 pm3393_enable(cmac, enabled);
563 return 0;
564 }
565
566 static void pm3393_destroy(struct cmac *cmac)
567 {
568 kfree(cmac);
569 }
570
571 static struct cmac_ops pm3393_ops = {
572 .destroy = pm3393_destroy,
573 .reset = pm3393_reset,
574 .interrupt_enable = pm3393_interrupt_enable,
575 .interrupt_disable = pm3393_interrupt_disable,
576 .interrupt_clear = pm3393_interrupt_clear,
577 .interrupt_handler = pm3393_interrupt_handler,
578 .enable = pm3393_enable_port,
579 .disable = pm3393_disable,
580 .loopback_enable = pm3393_loopback_enable,
581 .loopback_disable = pm3393_loopback_disable,
582 .set_mtu = pm3393_set_mtu,
583 .set_rx_mode = pm3393_set_rx_mode,
584 .get_speed_duplex_fc = pm3393_get_speed_duplex_fc,
585 .set_speed_duplex_fc = pm3393_set_speed_duplex_fc,
586 .statistics_update = pm3393_update_statistics,
587 .macaddress_get = pm3393_macaddress_get,
588 .macaddress_set = pm3393_macaddress_set
589 };
590
591 static struct cmac *pm3393_mac_create(adapter_t *adapter, int index)
592 {
593 struct cmac *cmac;
594
595 cmac = kzalloc(sizeof(*cmac) + sizeof(cmac_instance), GFP_KERNEL);
596 if (!cmac)
597 return NULL;
598
599 cmac->ops = &pm3393_ops;
600 cmac->instance = (cmac_instance *) (cmac + 1);
601 cmac->adapter = adapter;
602 cmac->instance->fc = PAUSE_TX | PAUSE_RX;
603
604 t1_tpi_write(adapter, OFFSET(0x0001), 0x00008000);
605 t1_tpi_write(adapter, OFFSET(0x0001), 0x00000000);
606 t1_tpi_write(adapter, OFFSET(0x2308), 0x00009800);
607 t1_tpi_write(adapter, OFFSET(0x2305), 0x00001001); /* PL4IO Enable */
608 t1_tpi_write(adapter, OFFSET(0x2320), 0x00008800);
609 t1_tpi_write(adapter, OFFSET(0x2321), 0x00008800);
610 t1_tpi_write(adapter, OFFSET(0x2322), 0x00008800);
611 t1_tpi_write(adapter, OFFSET(0x2323), 0x00008800);
612 t1_tpi_write(adapter, OFFSET(0x2324), 0x00008800);
613 t1_tpi_write(adapter, OFFSET(0x2325), 0x00008800);
614 t1_tpi_write(adapter, OFFSET(0x2326), 0x00008800);
615 t1_tpi_write(adapter, OFFSET(0x2327), 0x00008800);
616 t1_tpi_write(adapter, OFFSET(0x2328), 0x00008800);
617 t1_tpi_write(adapter, OFFSET(0x2329), 0x00008800);
618 t1_tpi_write(adapter, OFFSET(0x232a), 0x00008800);
619 t1_tpi_write(adapter, OFFSET(0x232b), 0x00008800);
620 t1_tpi_write(adapter, OFFSET(0x232c), 0x00008800);
621 t1_tpi_write(adapter, OFFSET(0x232d), 0x00008800);
622 t1_tpi_write(adapter, OFFSET(0x232e), 0x00008800);
623 t1_tpi_write(adapter, OFFSET(0x232f), 0x00008800);
624 t1_tpi_write(adapter, OFFSET(0x230d), 0x00009c00);
625 t1_tpi_write(adapter, OFFSET(0x2304), 0x00000202); /* PL4IO Calendar Repetitions */
626
627 t1_tpi_write(adapter, OFFSET(0x3200), 0x00008080); /* EFLX Enable */
628 t1_tpi_write(adapter, OFFSET(0x3210), 0x00000000); /* EFLX Channel Deprovision */
629 t1_tpi_write(adapter, OFFSET(0x3203), 0x00000000); /* EFLX Low Limit */
630 t1_tpi_write(adapter, OFFSET(0x3204), 0x00000040); /* EFLX High Limit */
631 t1_tpi_write(adapter, OFFSET(0x3205), 0x000002cc); /* EFLX Almost Full */
632 t1_tpi_write(adapter, OFFSET(0x3206), 0x00000199); /* EFLX Almost Empty */
633 t1_tpi_write(adapter, OFFSET(0x3207), 0x00000240); /* EFLX Cut Through Threshold */
634 t1_tpi_write(adapter, OFFSET(0x3202), 0x00000000); /* EFLX Indirect Register Update */
635 t1_tpi_write(adapter, OFFSET(0x3210), 0x00000001); /* EFLX Channel Provision */
636 t1_tpi_write(adapter, OFFSET(0x3208), 0x0000ffff); /* EFLX Undocumented */
637 t1_tpi_write(adapter, OFFSET(0x320a), 0x0000ffff); /* EFLX Undocumented */
638 t1_tpi_write(adapter, OFFSET(0x320c), 0x0000ffff); /* EFLX enable overflow interrupt The other bit are undocumented */
639 t1_tpi_write(adapter, OFFSET(0x320e), 0x0000ffff); /* EFLX Undocumented */
640
641 t1_tpi_write(adapter, OFFSET(0x2200), 0x0000c000); /* IFLX Configuration - enable */
642 t1_tpi_write(adapter, OFFSET(0x2201), 0x00000000); /* IFLX Channel Deprovision */
643 t1_tpi_write(adapter, OFFSET(0x220e), 0x00000000); /* IFLX Low Limit */
644 t1_tpi_write(adapter, OFFSET(0x220f), 0x00000100); /* IFLX High Limit */
645 t1_tpi_write(adapter, OFFSET(0x2210), 0x00000c00); /* IFLX Almost Full Limit */
646 t1_tpi_write(adapter, OFFSET(0x2211), 0x00000599); /* IFLX Almost Empty Limit */
647 t1_tpi_write(adapter, OFFSET(0x220d), 0x00000000); /* IFLX Indirect Register Update */
648 t1_tpi_write(adapter, OFFSET(0x2201), 0x00000001); /* IFLX Channel Provision */
649 t1_tpi_write(adapter, OFFSET(0x2203), 0x0000ffff); /* IFLX Undocumented */
650 t1_tpi_write(adapter, OFFSET(0x2205), 0x0000ffff); /* IFLX Undocumented */
651 t1_tpi_write(adapter, OFFSET(0x2209), 0x0000ffff); /* IFLX Enable overflow interrupt. The other bit are undocumented */
652
653 t1_tpi_write(adapter, OFFSET(0x2241), 0xfffffffe); /* PL4MOS Undocumented */
654 t1_tpi_write(adapter, OFFSET(0x2242), 0x0000ffff); /* PL4MOS Undocumented */
655 t1_tpi_write(adapter, OFFSET(0x2243), 0x00000008); /* PL4MOS Starving Burst Size */
656 t1_tpi_write(adapter, OFFSET(0x2244), 0x00000008); /* PL4MOS Hungry Burst Size */
657 t1_tpi_write(adapter, OFFSET(0x2245), 0x00000008); /* PL4MOS Transfer Size */
658 t1_tpi_write(adapter, OFFSET(0x2240), 0x00000005); /* PL4MOS Disable */
659
660 t1_tpi_write(adapter, OFFSET(0x2280), 0x00002103); /* PL4ODP Training Repeat and SOP rule */
661 t1_tpi_write(adapter, OFFSET(0x2284), 0x00000000); /* PL4ODP MAX_T setting */
662
663 t1_tpi_write(adapter, OFFSET(0x3280), 0x00000087); /* PL4IDU Enable data forward, port state machine. Set ALLOW_NON_ZERO_OLB */
664 t1_tpi_write(adapter, OFFSET(0x3282), 0x0000001f); /* PL4IDU Enable Dip4 check error interrupts */
665
666 t1_tpi_write(adapter, OFFSET(0x3040), 0x0c32); /* # TXXG Config */
667 /* For T1 use timer based Mac flow control. */
668 t1_tpi_write(adapter, OFFSET(0x304d), 0x8000);
669 t1_tpi_write(adapter, OFFSET(0x2040), 0x059c); /* # RXXG Config */
670 t1_tpi_write(adapter, OFFSET(0x2049), 0x0001); /* # RXXG Cut Through */
671 t1_tpi_write(adapter, OFFSET(0x2070), 0x0000); /* # Disable promiscuous mode */
672
673 /* Setup Exact Match Filter 0 to allow broadcast packets.
674 */
675 t1_tpi_write(adapter, OFFSET(0x206e), 0x0000); /* # Disable Match Enable bit */
676 t1_tpi_write(adapter, OFFSET(0x204a), 0xffff); /* # low addr */
677 t1_tpi_write(adapter, OFFSET(0x204b), 0xffff); /* # mid addr */
678 t1_tpi_write(adapter, OFFSET(0x204c), 0xffff); /* # high addr */
679 t1_tpi_write(adapter, OFFSET(0x206e), 0x0009); /* # Enable Match Enable bit */
680
681 t1_tpi_write(adapter, OFFSET(0x0003), 0x0000); /* # NO SOP/ PAD_EN setup */
682 t1_tpi_write(adapter, OFFSET(0x0100), 0x0ff0); /* # RXEQB disabled */
683 t1_tpi_write(adapter, OFFSET(0x0101), 0x0f0f); /* # No Preemphasis */
684
685 return cmac;
686 }
687
688 static int pm3393_mac_reset(adapter_t * adapter)
689 {
690 u32 val;
691 u32 x;
692 u32 is_pl4_reset_finished;
693 u32 is_pl4_outof_lock;
694 u32 is_xaui_mabc_pll_locked;
695 u32 successful_reset;
696 int i;
697
698 /* The following steps are required to properly reset
699 * the PM3393. This information is provided in the
700 * PM3393 datasheet (Issue 2: November 2002)
701 * section 13.1 -- Device Reset.
702 *
703 * The PM3393 has three types of components that are
704 * individually reset:
705 *
706 * DRESETB - Digital circuitry
707 * PL4_ARESETB - PL4 analog circuitry
708 * XAUI_ARESETB - XAUI bus analog circuitry
709 *
710 * Steps to reset PM3393 using RSTB pin:
711 *
712 * 1. Assert RSTB pin low ( write 0 )
713 * 2. Wait at least 1ms to initiate a complete initialization of device.
714 * 3. Wait until all external clocks and REFSEL are stable.
715 * 4. Wait minimum of 1ms. (after external clocks and REFEL are stable)
716 * 5. De-assert RSTB ( write 1 )
717 * 6. Wait until internal timers to expires after ~14ms.
718 * - Allows analog clock synthesizer(PL4CSU) to stabilize to
719 * selected reference frequency before allowing the digital
720 * portion of the device to operate.
721 * 7. Wait at least 200us for XAUI interface to stabilize.
722 * 8. Verify the PM3393 came out of reset successfully.
723 * Set successful reset flag if everything worked else try again
724 * a few more times.
725 */
726
727 successful_reset = 0;
728 for (i = 0; i < 3 && !successful_reset; i++) {
729 /* 1 */
730 t1_tpi_read(adapter, A_ELMER0_GPO, &val);
731 val &= ~1;
732 t1_tpi_write(adapter, A_ELMER0_GPO, val);
733
734 /* 2 */
735 msleep(1);
736
737 /* 3 */
738 msleep(1);
739
740 /* 4 */
741 msleep(2 /*1 extra ms for safety */ );
742
743 /* 5 */
744 val |= 1;
745 t1_tpi_write(adapter, A_ELMER0_GPO, val);
746
747 /* 6 */
748 msleep(15 /*1 extra ms for safety */ );
749
750 /* 7 */
751 msleep(1);
752
753 /* 8 */
754
755 /* Has PL4 analog block come out of reset correctly? */
756 t1_tpi_read(adapter, OFFSET(SUNI1x10GEXP_REG_DEVICE_STATUS), &val);
757 is_pl4_reset_finished = (val & SUNI1x10GEXP_BITMSK_TOP_EXPIRED);
758
759 /* TBD XXX SUNI1x10GEXP_BITMSK_TOP_PL4_IS_DOOL gets locked later in the init sequence
760 * figure out why? */
761
762 /* Have all PL4 block clocks locked? */
763 x = (SUNI1x10GEXP_BITMSK_TOP_PL4_ID_DOOL
764 /*| SUNI1x10GEXP_BITMSK_TOP_PL4_IS_DOOL */ |
765 SUNI1x10GEXP_BITMSK_TOP_PL4_ID_ROOL |
766 SUNI1x10GEXP_BITMSK_TOP_PL4_IS_ROOL |
767 SUNI1x10GEXP_BITMSK_TOP_PL4_OUT_ROOL);
768 is_pl4_outof_lock = (val & x);
769
770 /* ??? If this fails, might be able to software reset the XAUI part
771 * and try to recover... thus saving us from doing another HW reset */
772 /* Has the XAUI MABC PLL circuitry stablized? */
773 is_xaui_mabc_pll_locked =
774 (val & SUNI1x10GEXP_BITMSK_TOP_SXRA_EXPIRED);
775
776 successful_reset = (is_pl4_reset_finished && !is_pl4_outof_lock
777 && is_xaui_mabc_pll_locked);
778
779 CH_DBG(adapter, HW,
780 "PM3393 HW reset %d: pl4_reset 0x%x, val 0x%x, "
781 "is_pl4_outof_lock 0x%x, xaui_locked 0x%x\n",
782 i, is_pl4_reset_finished, val, is_pl4_outof_lock,
783 is_xaui_mabc_pll_locked);
784 }
785 return successful_reset ? 0 : 1;
786 }
787
788 const struct gmac t1_pm3393_ops = {
789 .stats_update_period = STATS_TICK_SECS,
790 .create = pm3393_mac_create,
791 .reset = pm3393_mac_reset,
792 };
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