1 // SPDX-License-Identifier: GPL-2.0-only
2 /*****************************************************************************
3 * *
4 * File: pm3393.c *
5 * $Revision: 1.16 $ *
6 * $Date: 2005/05/14 00:59:32 $ *
7 * Description: *
8 * PMC/SIERRA (pm3393) MAC-PHY functionality. *
9 * part of the Chelsio 10Gb Ethernet Driver. *
10 * *
11 * *
12 * http://www.chelsio.com *
13 * *
14 * Copyright (c) 2003 - 2005 Chelsio Communications, Inc. *
15 * All rights reserved. *
16 * *
17 * Maintainers: maintainers@chelsio.com *
18 * *
19 * Authors: Dimitrios Michailidis <dm@chelsio.com> *
20 * Tina Yang <tainay@chelsio.com> *
21 * Felix Marti <felix@chelsio.com> *
22 * Scott Bardone <sbardone@chelsio.com> *
23 * Kurt Ottaway <kottaway@chelsio.com> *
24 * Frank DiMambro <frank@chelsio.com> *
25 * *
26 * History: *
27 * *
28 ****************************************************************************/
29
30 #include "common.h"
31 #include "regs.h"
32 #include "gmac.h"
33 #include "elmer0.h"
34 #include "suni1x10gexp_regs.h"
35
36 #include <linux/crc32.h>
37 #include <linux/slab.h>
38
39 #define OFFSET(REG_ADDR) ((REG_ADDR) << 2)
40
41 #define IPG 12
42 #define TXXG_CONF1_VAL ((IPG << SUNI1x10GEXP_BITOFF_TXXG_IPGT) | \
43 SUNI1x10GEXP_BITMSK_TXXG_32BIT_ALIGN | SUNI1x10GEXP_BITMSK_TXXG_CRCEN | \
44 SUNI1x10GEXP_BITMSK_TXXG_PADEN)
45 #define RXXG_CONF1_VAL (SUNI1x10GEXP_BITMSK_RXXG_PUREP | 0x14 | \
46 SUNI1x10GEXP_BITMSK_RXXG_FLCHK | SUNI1x10GEXP_BITMSK_RXXG_CRC_STRIP)
47
48 /* Update statistics every 15 minutes */
49 #define STATS_TICK_SECS (15 * 60)
50
51 enum { /* RMON registers */
52 RxOctetsReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_1_LOW,
53 RxUnicastFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_4_LOW,
54 RxMulticastFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_5_LOW,
55 RxBroadcastFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_6_LOW,
56 RxPAUSEMACCtrlFramesReceived = SUNI1x10GEXP_REG_MSTAT_COUNTER_8_LOW,
57 RxFrameCheckSequenceErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_10_LOW,
58 RxFramesLostDueToInternalMACErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_11_LOW,
59 RxSymbolErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_12_LOW,
60 RxInRangeLengthErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_13_LOW,
61 RxFramesTooLongErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_15_LOW,
62 RxJabbers = SUNI1x10GEXP_REG_MSTAT_COUNTER_16_LOW,
63 RxFragments = SUNI1x10GEXP_REG_MSTAT_COUNTER_17_LOW,
64 RxUndersizedFrames = SUNI1x10GEXP_REG_MSTAT_COUNTER_18_LOW,
65 RxJumboFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_25_LOW,
66 RxJumboOctetsReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_26_LOW,
67
68 TxOctetsTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_33_LOW,
69 TxFramesLostDueToInternalMACTransmissionError = SUNI1x10GEXP_REG_MSTAT_COUNTER_35_LOW,
70 TxTransmitSystemError = SUNI1x10GEXP_REG_MSTAT_COUNTER_36_LOW,
71 TxUnicastFramesTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_38_LOW,
72 TxMulticastFramesTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_40_LOW,
73 TxBroadcastFramesTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_42_LOW,
74 TxPAUSEMACCtrlFramesTransmitted = SUNI1x10GEXP_REG_MSTAT_COUNTER_43_LOW,
75 TxJumboFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_51_LOW,
76 TxJumboOctetsReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_52_LOW
77 };
78
79 struct _cmac_instance {
80 u8 enabled;
81 u8 fc;
82 u8 mac_addr[6];
83 };
84
pmread(struct cmac * cmac,u32 reg,u32 * data32)85 static int pmread(struct cmac *cmac, u32 reg, u32 * data32)
86 {
87 t1_tpi_read(cmac->adapter, OFFSET(reg), data32);
88 return 0;
89 }
90
pmwrite(struct cmac * cmac,u32 reg,u32 data32)91 static int pmwrite(struct cmac *cmac, u32 reg, u32 data32)
92 {
93 t1_tpi_write(cmac->adapter, OFFSET(reg), data32);
94 return 0;
95 }
96
97 /* Port reset. */
pm3393_reset(struct cmac * cmac)98 static int pm3393_reset(struct cmac *cmac)
99 {
100 return 0;
101 }
102
103 /*
104 * Enable interrupts for the PM3393
105 *
106 * 1. Enable PM3393 BLOCK interrupts.
107 * 2. Enable PM3393 Master Interrupt bit(INTE)
108 * 3. Enable ELMER's PM3393 bit.
109 * 4. Enable Terminator external interrupt.
110 */
pm3393_interrupt_enable(struct cmac * cmac)111 static int pm3393_interrupt_enable(struct cmac *cmac)
112 {
113 u32 pl_intr;
114
115 /* PM3393 - Enabling all hardware block interrupts.
116 */
117 pmwrite(cmac, SUNI1x10GEXP_REG_SERDES_3125_INTERRUPT_ENABLE, 0xffff);
118 pmwrite(cmac, SUNI1x10GEXP_REG_XRF_INTERRUPT_ENABLE, 0xffff);
119 pmwrite(cmac, SUNI1x10GEXP_REG_XRF_DIAG_INTERRUPT_ENABLE, 0xffff);
120 pmwrite(cmac, SUNI1x10GEXP_REG_RXOAM_INTERRUPT_ENABLE, 0xffff);
121
122 /* Don't interrupt on statistics overflow, we are polling */
123 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_0, 0);
124 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_1, 0);
125 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_2, 0);
126 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_3, 0);
127
128 pmwrite(cmac, SUNI1x10GEXP_REG_IFLX_FIFO_OVERFLOW_ENABLE, 0xffff);
129 pmwrite(cmac, SUNI1x10GEXP_REG_PL4ODP_INTERRUPT_MASK, 0xffff);
130 pmwrite(cmac, SUNI1x10GEXP_REG_XTEF_INTERRUPT_ENABLE, 0xffff);
131 pmwrite(cmac, SUNI1x10GEXP_REG_TXOAM_INTERRUPT_ENABLE, 0xffff);
132 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_3, 0xffff);
133 pmwrite(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_MASK, 0xffff);
134 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_3, 0xffff);
135 pmwrite(cmac, SUNI1x10GEXP_REG_PL4IDU_INTERRUPT_MASK, 0xffff);
136 pmwrite(cmac, SUNI1x10GEXP_REG_EFLX_FIFO_OVERFLOW_ERROR_ENABLE, 0xffff);
137
138 /* PM3393 - Global interrupt enable
139 */
140 /* TBD XXX Disable for now until we figure out why error interrupts keep asserting. */
141 pmwrite(cmac, SUNI1x10GEXP_REG_GLOBAL_INTERRUPT_ENABLE,
142 0 /*SUNI1x10GEXP_BITMSK_TOP_INTE */ );
143
144 /* TERMINATOR - PL_INTERUPTS_EXT */
145 pl_intr = readl(cmac->adapter->regs + A_PL_ENABLE);
146 pl_intr |= F_PL_INTR_EXT;
147 writel(pl_intr, cmac->adapter->regs + A_PL_ENABLE);
148 return 0;
149 }
150
pm3393_interrupt_disable(struct cmac * cmac)151 static int pm3393_interrupt_disable(struct cmac *cmac)
152 {
153 u32 elmer;
154
155 /* PM3393 - Enabling HW interrupt blocks. */
156 pmwrite(cmac, SUNI1x10GEXP_REG_SERDES_3125_INTERRUPT_ENABLE, 0);
157 pmwrite(cmac, SUNI1x10GEXP_REG_XRF_INTERRUPT_ENABLE, 0);
158 pmwrite(cmac, SUNI1x10GEXP_REG_XRF_DIAG_INTERRUPT_ENABLE, 0);
159 pmwrite(cmac, SUNI1x10GEXP_REG_RXOAM_INTERRUPT_ENABLE, 0);
160 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_0, 0);
161 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_1, 0);
162 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_2, 0);
163 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_3, 0);
164 pmwrite(cmac, SUNI1x10GEXP_REG_IFLX_FIFO_OVERFLOW_ENABLE, 0);
165 pmwrite(cmac, SUNI1x10GEXP_REG_PL4ODP_INTERRUPT_MASK, 0);
166 pmwrite(cmac, SUNI1x10GEXP_REG_XTEF_INTERRUPT_ENABLE, 0);
167 pmwrite(cmac, SUNI1x10GEXP_REG_TXOAM_INTERRUPT_ENABLE, 0);
168 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_3, 0);
169 pmwrite(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_MASK, 0);
170 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_3, 0);
171 pmwrite(cmac, SUNI1x10GEXP_REG_PL4IDU_INTERRUPT_MASK, 0);
172 pmwrite(cmac, SUNI1x10GEXP_REG_EFLX_FIFO_OVERFLOW_ERROR_ENABLE, 0);
173
174 /* PM3393 - Global interrupt enable */
175 pmwrite(cmac, SUNI1x10GEXP_REG_GLOBAL_INTERRUPT_ENABLE, 0);
176
177 /* ELMER - External chip interrupts. */
178 t1_tpi_read(cmac->adapter, A_ELMER0_INT_ENABLE, &elmer);
179 elmer &= ~ELMER0_GP_BIT1;
180 t1_tpi_write(cmac->adapter, A_ELMER0_INT_ENABLE, elmer);
181
182 /* TERMINATOR - PL_INTERUPTS_EXT */
183 /* DO NOT DISABLE TERMINATOR's EXTERNAL INTERRUPTS. ANOTHER CHIP
184 * COULD WANT THEM ENABLED. We disable PM3393 at the ELMER level.
185 */
186
187 return 0;
188 }
189
pm3393_interrupt_clear(struct cmac * cmac)190 static int pm3393_interrupt_clear(struct cmac *cmac)
191 {
192 u32 elmer;
193 u32 pl_intr;
194 u32 val32;
195
196 /* PM3393 - Clearing HW interrupt blocks. Note, this assumes
197 * bit WCIMODE=0 for a clear-on-read.
198 */
199 pmread(cmac, SUNI1x10GEXP_REG_SERDES_3125_INTERRUPT_STATUS, &val32);
200 pmread(cmac, SUNI1x10GEXP_REG_XRF_INTERRUPT_STATUS, &val32);
201 pmread(cmac, SUNI1x10GEXP_REG_XRF_DIAG_INTERRUPT_STATUS, &val32);
202 pmread(cmac, SUNI1x10GEXP_REG_RXOAM_INTERRUPT_STATUS, &val32);
203 pmread(cmac, SUNI1x10GEXP_REG_PL4ODP_INTERRUPT, &val32);
204 pmread(cmac, SUNI1x10GEXP_REG_XTEF_INTERRUPT_STATUS, &val32);
205 pmread(cmac, SUNI1x10GEXP_REG_IFLX_FIFO_OVERFLOW_INTERRUPT, &val32);
206 pmread(cmac, SUNI1x10GEXP_REG_TXOAM_INTERRUPT_STATUS, &val32);
207 pmread(cmac, SUNI1x10GEXP_REG_RXXG_INTERRUPT, &val32);
208 pmread(cmac, SUNI1x10GEXP_REG_TXXG_INTERRUPT, &val32);
209 pmread(cmac, SUNI1x10GEXP_REG_PL4IDU_INTERRUPT, &val32);
210 pmread(cmac, SUNI1x10GEXP_REG_EFLX_FIFO_OVERFLOW_ERROR_INDICATION,
211 &val32);
212 pmread(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_STATUS, &val32);
213 pmread(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_CHANGE, &val32);
214
215 /* PM3393 - Global interrupt status
216 */
217 pmread(cmac, SUNI1x10GEXP_REG_MASTER_INTERRUPT_STATUS, &val32);
218
219 /* ELMER - External chip interrupts.
220 */
221 t1_tpi_read(cmac->adapter, A_ELMER0_INT_CAUSE, &elmer);
222 elmer |= ELMER0_GP_BIT1;
223 t1_tpi_write(cmac->adapter, A_ELMER0_INT_CAUSE, elmer);
224
225 /* TERMINATOR - PL_INTERUPTS_EXT
226 */
227 pl_intr = readl(cmac->adapter->regs + A_PL_CAUSE);
228 pl_intr |= F_PL_INTR_EXT;
229 writel(pl_intr, cmac->adapter->regs + A_PL_CAUSE);
230
231 return 0;
232 }
233
234 /* Interrupt handler */
pm3393_interrupt_handler(struct cmac * cmac)235 static int pm3393_interrupt_handler(struct cmac *cmac)
236 {
237 u32 master_intr_status;
238
239 /* Read the master interrupt status register. */
240 pmread(cmac, SUNI1x10GEXP_REG_MASTER_INTERRUPT_STATUS,
241 &master_intr_status);
242 if (netif_msg_intr(cmac->adapter))
243 dev_dbg(&cmac->adapter->pdev->dev, "PM3393 intr cause 0x%x\n",
244 master_intr_status);
245
246 /* TBD XXX Lets just clear everything for now */
247 pm3393_interrupt_clear(cmac);
248
249 return 0;
250 }
251
pm3393_enable(struct cmac * cmac,int which)252 static int pm3393_enable(struct cmac *cmac, int which)
253 {
254 if (which & MAC_DIRECTION_RX)
255 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_1,
256 (RXXG_CONF1_VAL | SUNI1x10GEXP_BITMSK_RXXG_RXEN));
257
258 if (which & MAC_DIRECTION_TX) {
259 u32 val = TXXG_CONF1_VAL | SUNI1x10GEXP_BITMSK_TXXG_TXEN0;
260
261 if (cmac->instance->fc & PAUSE_RX)
262 val |= SUNI1x10GEXP_BITMSK_TXXG_FCRX;
263 if (cmac->instance->fc & PAUSE_TX)
264 val |= SUNI1x10GEXP_BITMSK_TXXG_FCTX;
265 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_1, val);
266 }
267
268 cmac->instance->enabled |= which;
269 return 0;
270 }
271
pm3393_enable_port(struct cmac * cmac,int which)272 static int pm3393_enable_port(struct cmac *cmac, int which)
273 {
274 /* Clear port statistics */
275 pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_CONTROL,
276 SUNI1x10GEXP_BITMSK_MSTAT_CLEAR);
277 udelay(2);
278 memset(&cmac->stats, 0, sizeof(struct cmac_statistics));
279
280 pm3393_enable(cmac, which);
281
282 /*
283 * XXX This should be done by the PHY and preferably not at all.
284 * The PHY doesn't give us link status indication on its own so have
285 * the link management code query it instead.
286 */
287 t1_link_changed(cmac->adapter, 0);
288 return 0;
289 }
290
pm3393_disable(struct cmac * cmac,int which)291 static int pm3393_disable(struct cmac *cmac, int which)
292 {
293 if (which & MAC_DIRECTION_RX)
294 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_1, RXXG_CONF1_VAL);
295 if (which & MAC_DIRECTION_TX)
296 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_1, TXXG_CONF1_VAL);
297
298 /*
299 * The disable is graceful. Give the PM3393 time. Can't wait very
300 * long here, we may be holding locks.
301 */
302 udelay(20);
303
304 cmac->instance->enabled &= ~which;
305 return 0;
306 }
307
pm3393_loopback_enable(struct cmac * cmac)308 static int pm3393_loopback_enable(struct cmac *cmac)
309 {
310 return 0;
311 }
312
pm3393_loopback_disable(struct cmac * cmac)313 static int pm3393_loopback_disable(struct cmac *cmac)
314 {
315 return 0;
316 }
317
pm3393_set_mtu(struct cmac * cmac,int mtu)318 static int pm3393_set_mtu(struct cmac *cmac, int mtu)
319 {
320 int enabled = cmac->instance->enabled;
321
322 mtu += ETH_HLEN + ETH_FCS_LEN;
323
324 /* Disable Rx/Tx MAC before configuring it. */
325 if (enabled)
326 pm3393_disable(cmac, MAC_DIRECTION_RX | MAC_DIRECTION_TX);
327
328 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MAX_FRAME_LENGTH, mtu);
329 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_MAX_FRAME_SIZE, mtu);
330
331 if (enabled)
332 pm3393_enable(cmac, enabled);
333 return 0;
334 }
335
pm3393_set_rx_mode(struct cmac * cmac,struct t1_rx_mode * rm)336 static int pm3393_set_rx_mode(struct cmac *cmac, struct t1_rx_mode *rm)
337 {
338 int enabled = cmac->instance->enabled & MAC_DIRECTION_RX;
339 u32 rx_mode;
340
341 /* Disable MAC RX before reconfiguring it */
342 if (enabled)
343 pm3393_disable(cmac, MAC_DIRECTION_RX);
344
345 pmread(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_2, &rx_mode);
346 rx_mode &= ~(SUNI1x10GEXP_BITMSK_RXXG_PMODE |
347 SUNI1x10GEXP_BITMSK_RXXG_MHASH_EN);
348 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_2,
349 (u16)rx_mode);
350
351 if (t1_rx_mode_promisc(rm)) {
352 /* Promiscuous mode. */
353 rx_mode |= SUNI1x10GEXP_BITMSK_RXXG_PMODE;
354 }
355 if (t1_rx_mode_allmulti(rm)) {
356 /* Accept all multicast. */
357 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_LOW, 0xffff);
358 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDLOW, 0xffff);
359 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDHIGH, 0xffff);
360 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_HIGH, 0xffff);
361 rx_mode |= SUNI1x10GEXP_BITMSK_RXXG_MHASH_EN;
362 } else if (t1_rx_mode_mc_cnt(rm)) {
363 /* Accept one or more multicast(s). */
364 struct netdev_hw_addr *ha;
365 int bit;
366 u16 mc_filter[4] = { 0, };
367
368 netdev_for_each_mc_addr(ha, t1_get_netdev(rm)) {
369 /* bit[23:28] */
370 bit = (ether_crc(ETH_ALEN, ha->addr) >> 23) & 0x3f;
371 mc_filter[bit >> 4] |= 1 << (bit & 0xf);
372 }
373 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_LOW, mc_filter[0]);
374 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDLOW, mc_filter[1]);
375 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDHIGH, mc_filter[2]);
376 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_HIGH, mc_filter[3]);
377 rx_mode |= SUNI1x10GEXP_BITMSK_RXXG_MHASH_EN;
378 }
379
380 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_2, (u16)rx_mode);
381
382 if (enabled)
383 pm3393_enable(cmac, MAC_DIRECTION_RX);
384
385 return 0;
386 }
387
pm3393_get_speed_duplex_fc(struct cmac * cmac,int * speed,int * duplex,int * fc)388 static int pm3393_get_speed_duplex_fc(struct cmac *cmac, int *speed,
389 int *duplex, int *fc)
390 {
391 if (speed)
392 *speed = SPEED_10000;
393 if (duplex)
394 *duplex = DUPLEX_FULL;
395 if (fc)
396 *fc = cmac->instance->fc;
397 return 0;
398 }
399
pm3393_set_speed_duplex_fc(struct cmac * cmac,int speed,int duplex,int fc)400 static int pm3393_set_speed_duplex_fc(struct cmac *cmac, int speed, int duplex,
401 int fc)
402 {
403 if (speed >= 0 && speed != SPEED_10000)
404 return -1;
405 if (duplex >= 0 && duplex != DUPLEX_FULL)
406 return -1;
407 if (fc & ~(PAUSE_TX | PAUSE_RX))
408 return -1;
409
410 if (fc != cmac->instance->fc) {
411 cmac->instance->fc = (u8) fc;
412 if (cmac->instance->enabled & MAC_DIRECTION_TX)
413 pm3393_enable(cmac, MAC_DIRECTION_TX);
414 }
415 return 0;
416 }
417
418 #define RMON_UPDATE(mac, name, stat_name) \
419 { \
420 t1_tpi_read((mac)->adapter, OFFSET(name), &val0); \
421 t1_tpi_read((mac)->adapter, OFFSET((name)+1), &val1); \
422 t1_tpi_read((mac)->adapter, OFFSET((name)+2), &val2); \
423 (mac)->stats.stat_name = (u64)(val0 & 0xffff) | \
424 ((u64)(val1 & 0xffff) << 16) | \
425 ((u64)(val2 & 0xff) << 32) | \
426 ((mac)->stats.stat_name & \
427 0xffffff0000000000ULL); \
428 if (ro & \
429 (1ULL << ((name - SUNI1x10GEXP_REG_MSTAT_COUNTER_0_LOW) >> 2))) \
430 (mac)->stats.stat_name += 1ULL << 40; \
431 }
432
pm3393_update_statistics(struct cmac * mac,int flag)433 static const struct cmac_statistics *pm3393_update_statistics(struct cmac *mac,
434 int flag)
435 {
436 u64 ro;
437 u32 val0, val1, val2, val3;
438
439 /* Snap the counters */
440 pmwrite(mac, SUNI1x10GEXP_REG_MSTAT_CONTROL,
441 SUNI1x10GEXP_BITMSK_MSTAT_SNAP);
442
443 /* Counter rollover, clear on read */
444 pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_0, &val0);
445 pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_1, &val1);
446 pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_2, &val2);
447 pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_3, &val3);
448 ro = ((u64)val0 & 0xffff) | (((u64)val1 & 0xffff) << 16) |
449 (((u64)val2 & 0xffff) << 32) | (((u64)val3 & 0xffff) << 48);
450
451 /* Rx stats */
452 RMON_UPDATE(mac, RxOctetsReceivedOK, RxOctetsOK);
453 RMON_UPDATE(mac, RxUnicastFramesReceivedOK, RxUnicastFramesOK);
454 RMON_UPDATE(mac, RxMulticastFramesReceivedOK, RxMulticastFramesOK);
455 RMON_UPDATE(mac, RxBroadcastFramesReceivedOK, RxBroadcastFramesOK);
456 RMON_UPDATE(mac, RxPAUSEMACCtrlFramesReceived, RxPauseFrames);
457 RMON_UPDATE(mac, RxFrameCheckSequenceErrors, RxFCSErrors);
458 RMON_UPDATE(mac, RxFramesLostDueToInternalMACErrors,
459 RxInternalMACRcvError);
460 RMON_UPDATE(mac, RxSymbolErrors, RxSymbolErrors);
461 RMON_UPDATE(mac, RxInRangeLengthErrors, RxInRangeLengthErrors);
462 RMON_UPDATE(mac, RxFramesTooLongErrors , RxFrameTooLongErrors);
463 RMON_UPDATE(mac, RxJabbers, RxJabberErrors);
464 RMON_UPDATE(mac, RxFragments, RxRuntErrors);
465 RMON_UPDATE(mac, RxUndersizedFrames, RxRuntErrors);
466 RMON_UPDATE(mac, RxJumboFramesReceivedOK, RxJumboFramesOK);
467 RMON_UPDATE(mac, RxJumboOctetsReceivedOK, RxJumboOctetsOK);
468
469 /* Tx stats */
470 RMON_UPDATE(mac, TxOctetsTransmittedOK, TxOctetsOK);
471 RMON_UPDATE(mac, TxFramesLostDueToInternalMACTransmissionError,
472 TxInternalMACXmitError);
473 RMON_UPDATE(mac, TxTransmitSystemError, TxFCSErrors);
474 RMON_UPDATE(mac, TxUnicastFramesTransmittedOK, TxUnicastFramesOK);
475 RMON_UPDATE(mac, TxMulticastFramesTransmittedOK, TxMulticastFramesOK);
476 RMON_UPDATE(mac, TxBroadcastFramesTransmittedOK, TxBroadcastFramesOK);
477 RMON_UPDATE(mac, TxPAUSEMACCtrlFramesTransmitted, TxPauseFrames);
478 RMON_UPDATE(mac, TxJumboFramesReceivedOK, TxJumboFramesOK);
479 RMON_UPDATE(mac, TxJumboOctetsReceivedOK, TxJumboOctetsOK);
480
481 return &mac->stats;
482 }
483
pm3393_macaddress_get(struct cmac * cmac,u8 mac_addr[6])484 static int pm3393_macaddress_get(struct cmac *cmac, u8 mac_addr[6])
485 {
486 memcpy(mac_addr, cmac->instance->mac_addr, ETH_ALEN);
487 return 0;
488 }
489
pm3393_macaddress_set(struct cmac * cmac,const u8 ma[6])490 static int pm3393_macaddress_set(struct cmac *cmac, const u8 ma[6])
491 {
492 u32 val, lo, mid, hi, enabled = cmac->instance->enabled;
493
494 /*
495 * MAC addr: 00:07:43:00:13:09
496 *
497 * ma[5] = 0x09
498 * ma[4] = 0x13
499 * ma[3] = 0x00
500 * ma[2] = 0x43
501 * ma[1] = 0x07
502 * ma[0] = 0x00
503 *
504 * The PM3393 requires byte swapping and reverse order entry
505 * when programming MAC addresses:
506 *
507 * low_bits[15:0] = ma[1]:ma[0]
508 * mid_bits[31:16] = ma[3]:ma[2]
509 * high_bits[47:32] = ma[5]:ma[4]
510 */
511
512 /* Store local copy */
513 memcpy(cmac->instance->mac_addr, ma, ETH_ALEN);
514
515 lo = ((u32) ma[1] << 8) | (u32) ma[0];
516 mid = ((u32) ma[3] << 8) | (u32) ma[2];
517 hi = ((u32) ma[5] << 8) | (u32) ma[4];
518
519 /* Disable Rx/Tx MAC before configuring it. */
520 if (enabled)
521 pm3393_disable(cmac, MAC_DIRECTION_RX | MAC_DIRECTION_TX);
522
523 /* Set RXXG Station Address */
524 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_SA_15_0, lo);
525 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_SA_31_16, mid);
526 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_SA_47_32, hi);
527
528 /* Set TXXG Station Address */
529 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_SA_15_0, lo);
530 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_SA_31_16, mid);
531 pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_SA_47_32, hi);
532
533 /* Setup Exact Match Filter 1 with our MAC address
534 *
535 * Must disable exact match filter before configuring it.
536 */
537 pmread(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_0, &val);
538 val &= 0xff0f;
539 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_0, val);
540
541 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_EXACT_MATCH_ADDR_1_LOW, lo);
542 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_EXACT_MATCH_ADDR_1_MID, mid);
543 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_EXACT_MATCH_ADDR_1_HIGH, hi);
544
545 val |= 0x0090;
546 pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_0, val);
547
548 if (enabled)
549 pm3393_enable(cmac, enabled);
550 return 0;
551 }
552
pm3393_destroy(struct cmac * cmac)553 static void pm3393_destroy(struct cmac *cmac)
554 {
555 kfree(cmac);
556 }
557
558 static const struct cmac_ops pm3393_ops = {
559 .destroy = pm3393_destroy,
560 .reset = pm3393_reset,
561 .interrupt_enable = pm3393_interrupt_enable,
562 .interrupt_disable = pm3393_interrupt_disable,
563 .interrupt_clear = pm3393_interrupt_clear,
564 .interrupt_handler = pm3393_interrupt_handler,
565 .enable = pm3393_enable_port,
566 .disable = pm3393_disable,
567 .loopback_enable = pm3393_loopback_enable,
568 .loopback_disable = pm3393_loopback_disable,
569 .set_mtu = pm3393_set_mtu,
570 .set_rx_mode = pm3393_set_rx_mode,
571 .get_speed_duplex_fc = pm3393_get_speed_duplex_fc,
572 .set_speed_duplex_fc = pm3393_set_speed_duplex_fc,
573 .statistics_update = pm3393_update_statistics,
574 .macaddress_get = pm3393_macaddress_get,
575 .macaddress_set = pm3393_macaddress_set
576 };
577
pm3393_mac_create(adapter_t * adapter,int index)578 static struct cmac *pm3393_mac_create(adapter_t *adapter, int index)
579 {
580 struct cmac *cmac;
581
582 cmac = kzalloc(sizeof(*cmac) + sizeof(cmac_instance), GFP_KERNEL);
583 if (!cmac)
584 return NULL;
585
586 cmac->ops = &pm3393_ops;
587 cmac->instance = (cmac_instance *) (cmac + 1);
588 cmac->adapter = adapter;
589 cmac->instance->fc = PAUSE_TX | PAUSE_RX;
590
591 t1_tpi_write(adapter, OFFSET(0x0001), 0x00008000);
592 t1_tpi_write(adapter, OFFSET(0x0001), 0x00000000);
593 t1_tpi_write(adapter, OFFSET(0x2308), 0x00009800);
594 t1_tpi_write(adapter, OFFSET(0x2305), 0x00001001); /* PL4IO Enable */
595 t1_tpi_write(adapter, OFFSET(0x2320), 0x00008800);
596 t1_tpi_write(adapter, OFFSET(0x2321), 0x00008800);
597 t1_tpi_write(adapter, OFFSET(0x2322), 0x00008800);
598 t1_tpi_write(adapter, OFFSET(0x2323), 0x00008800);
599 t1_tpi_write(adapter, OFFSET(0x2324), 0x00008800);
600 t1_tpi_write(adapter, OFFSET(0x2325), 0x00008800);
601 t1_tpi_write(adapter, OFFSET(0x2326), 0x00008800);
602 t1_tpi_write(adapter, OFFSET(0x2327), 0x00008800);
603 t1_tpi_write(adapter, OFFSET(0x2328), 0x00008800);
604 t1_tpi_write(adapter, OFFSET(0x2329), 0x00008800);
605 t1_tpi_write(adapter, OFFSET(0x232a), 0x00008800);
606 t1_tpi_write(adapter, OFFSET(0x232b), 0x00008800);
607 t1_tpi_write(adapter, OFFSET(0x232c), 0x00008800);
608 t1_tpi_write(adapter, OFFSET(0x232d), 0x00008800);
609 t1_tpi_write(adapter, OFFSET(0x232e), 0x00008800);
610 t1_tpi_write(adapter, OFFSET(0x232f), 0x00008800);
611 t1_tpi_write(adapter, OFFSET(0x230d), 0x00009c00);
612 t1_tpi_write(adapter, OFFSET(0x2304), 0x00000202); /* PL4IO Calendar Repetitions */
613
614 t1_tpi_write(adapter, OFFSET(0x3200), 0x00008080); /* EFLX Enable */
615 t1_tpi_write(adapter, OFFSET(0x3210), 0x00000000); /* EFLX Channel Deprovision */
616 t1_tpi_write(adapter, OFFSET(0x3203), 0x00000000); /* EFLX Low Limit */
617 t1_tpi_write(adapter, OFFSET(0x3204), 0x00000040); /* EFLX High Limit */
618 t1_tpi_write(adapter, OFFSET(0x3205), 0x000002cc); /* EFLX Almost Full */
619 t1_tpi_write(adapter, OFFSET(0x3206), 0x00000199); /* EFLX Almost Empty */
620 t1_tpi_write(adapter, OFFSET(0x3207), 0x00000240); /* EFLX Cut Through Threshold */
621 t1_tpi_write(adapter, OFFSET(0x3202), 0x00000000); /* EFLX Indirect Register Update */
622 t1_tpi_write(adapter, OFFSET(0x3210), 0x00000001); /* EFLX Channel Provision */
623 t1_tpi_write(adapter, OFFSET(0x3208), 0x0000ffff); /* EFLX Undocumented */
624 t1_tpi_write(adapter, OFFSET(0x320a), 0x0000ffff); /* EFLX Undocumented */
625 t1_tpi_write(adapter, OFFSET(0x320c), 0x0000ffff); /* EFLX enable overflow interrupt The other bit are undocumented */
626 t1_tpi_write(adapter, OFFSET(0x320e), 0x0000ffff); /* EFLX Undocumented */
627
628 t1_tpi_write(adapter, OFFSET(0x2200), 0x0000c000); /* IFLX Configuration - enable */
629 t1_tpi_write(adapter, OFFSET(0x2201), 0x00000000); /* IFLX Channel Deprovision */
630 t1_tpi_write(adapter, OFFSET(0x220e), 0x00000000); /* IFLX Low Limit */
631 t1_tpi_write(adapter, OFFSET(0x220f), 0x00000100); /* IFLX High Limit */
632 t1_tpi_write(adapter, OFFSET(0x2210), 0x00000c00); /* IFLX Almost Full Limit */
633 t1_tpi_write(adapter, OFFSET(0x2211), 0x00000599); /* IFLX Almost Empty Limit */
634 t1_tpi_write(adapter, OFFSET(0x220d), 0x00000000); /* IFLX Indirect Register Update */
635 t1_tpi_write(adapter, OFFSET(0x2201), 0x00000001); /* IFLX Channel Provision */
636 t1_tpi_write(adapter, OFFSET(0x2203), 0x0000ffff); /* IFLX Undocumented */
637 t1_tpi_write(adapter, OFFSET(0x2205), 0x0000ffff); /* IFLX Undocumented */
638 t1_tpi_write(adapter, OFFSET(0x2209), 0x0000ffff); /* IFLX Enable overflow interrupt. The other bit are undocumented */
639
640 t1_tpi_write(adapter, OFFSET(0x2241), 0xfffffffe); /* PL4MOS Undocumented */
641 t1_tpi_write(adapter, OFFSET(0x2242), 0x0000ffff); /* PL4MOS Undocumented */
642 t1_tpi_write(adapter, OFFSET(0x2243), 0x00000008); /* PL4MOS Starving Burst Size */
643 t1_tpi_write(adapter, OFFSET(0x2244), 0x00000008); /* PL4MOS Hungry Burst Size */
644 t1_tpi_write(adapter, OFFSET(0x2245), 0x00000008); /* PL4MOS Transfer Size */
645 t1_tpi_write(adapter, OFFSET(0x2240), 0x00000005); /* PL4MOS Disable */
646
647 t1_tpi_write(adapter, OFFSET(0x2280), 0x00002103); /* PL4ODP Training Repeat and SOP rule */
648 t1_tpi_write(adapter, OFFSET(0x2284), 0x00000000); /* PL4ODP MAX_T setting */
649
650 t1_tpi_write(adapter, OFFSET(0x3280), 0x00000087); /* PL4IDU Enable data forward, port state machine. Set ALLOW_NON_ZERO_OLB */
651 t1_tpi_write(adapter, OFFSET(0x3282), 0x0000001f); /* PL4IDU Enable Dip4 check error interrupts */
652
653 t1_tpi_write(adapter, OFFSET(0x3040), 0x0c32); /* # TXXG Config */
654 /* For T1 use timer based Mac flow control. */
655 t1_tpi_write(adapter, OFFSET(0x304d), 0x8000);
656 t1_tpi_write(adapter, OFFSET(0x2040), 0x059c); /* # RXXG Config */
657 t1_tpi_write(adapter, OFFSET(0x2049), 0x0001); /* # RXXG Cut Through */
658 t1_tpi_write(adapter, OFFSET(0x2070), 0x0000); /* # Disable promiscuous mode */
659
660 /* Setup Exact Match Filter 0 to allow broadcast packets.
661 */
662 t1_tpi_write(adapter, OFFSET(0x206e), 0x0000); /* # Disable Match Enable bit */
663 t1_tpi_write(adapter, OFFSET(0x204a), 0xffff); /* # low addr */
664 t1_tpi_write(adapter, OFFSET(0x204b), 0xffff); /* # mid addr */
665 t1_tpi_write(adapter, OFFSET(0x204c), 0xffff); /* # high addr */
666 t1_tpi_write(adapter, OFFSET(0x206e), 0x0009); /* # Enable Match Enable bit */
667
668 t1_tpi_write(adapter, OFFSET(0x0003), 0x0000); /* # NO SOP/ PAD_EN setup */
669 t1_tpi_write(adapter, OFFSET(0x0100), 0x0ff0); /* # RXEQB disabled */
670 t1_tpi_write(adapter, OFFSET(0x0101), 0x0f0f); /* # No Preemphasis */
671
672 return cmac;
673 }
674
pm3393_mac_reset(adapter_t * adapter)675 static int pm3393_mac_reset(adapter_t * adapter)
676 {
677 u32 val;
678 u32 x;
679 u32 is_pl4_reset_finished;
680 u32 is_pl4_outof_lock;
681 u32 is_xaui_mabc_pll_locked;
682 u32 successful_reset;
683 int i;
684
685 /* The following steps are required to properly reset
686 * the PM3393. This information is provided in the
687 * PM3393 datasheet (Issue 2: November 2002)
688 * section 13.1 -- Device Reset.
689 *
690 * The PM3393 has three types of components that are
691 * individually reset:
692 *
693 * DRESETB - Digital circuitry
694 * PL4_ARESETB - PL4 analog circuitry
695 * XAUI_ARESETB - XAUI bus analog circuitry
696 *
697 * Steps to reset PM3393 using RSTB pin:
698 *
699 * 1. Assert RSTB pin low ( write 0 )
700 * 2. Wait at least 1ms to initiate a complete initialization of device.
701 * 3. Wait until all external clocks and REFSEL are stable.
702 * 4. Wait minimum of 1ms. (after external clocks and REFEL are stable)
703 * 5. De-assert RSTB ( write 1 )
704 * 6. Wait until internal timers to expires after ~14ms.
705 * - Allows analog clock synthesizer(PL4CSU) to stabilize to
706 * selected reference frequency before allowing the digital
707 * portion of the device to operate.
708 * 7. Wait at least 200us for XAUI interface to stabilize.
709 * 8. Verify the PM3393 came out of reset successfully.
710 * Set successful reset flag if everything worked else try again
711 * a few more times.
712 */
713
714 successful_reset = 0;
715 for (i = 0; i < 3 && !successful_reset; i++) {
716 /* 1 */
717 t1_tpi_read(adapter, A_ELMER0_GPO, &val);
718 val &= ~1;
719 t1_tpi_write(adapter, A_ELMER0_GPO, val);
720
721 /* 2 */
722 msleep(1);
723
724 /* 3 */
725 msleep(1);
726
727 /* 4 */
728 msleep(2 /*1 extra ms for safety */ );
729
730 /* 5 */
731 val |= 1;
732 t1_tpi_write(adapter, A_ELMER0_GPO, val);
733
734 /* 6 */
735 msleep(15 /*1 extra ms for safety */ );
736
737 /* 7 */
738 msleep(1);
739
740 /* 8 */
741
742 /* Has PL4 analog block come out of reset correctly? */
743 t1_tpi_read(adapter, OFFSET(SUNI1x10GEXP_REG_DEVICE_STATUS), &val);
744 is_pl4_reset_finished = (val & SUNI1x10GEXP_BITMSK_TOP_EXPIRED);
745
746 /* TBD XXX SUNI1x10GEXP_BITMSK_TOP_PL4_IS_DOOL gets locked later in the init sequence
747 * figure out why? */
748
749 /* Have all PL4 block clocks locked? */
750 x = (SUNI1x10GEXP_BITMSK_TOP_PL4_ID_DOOL
751 /*| SUNI1x10GEXP_BITMSK_TOP_PL4_IS_DOOL */ |
752 SUNI1x10GEXP_BITMSK_TOP_PL4_ID_ROOL |
753 SUNI1x10GEXP_BITMSK_TOP_PL4_IS_ROOL |
754 SUNI1x10GEXP_BITMSK_TOP_PL4_OUT_ROOL);
755 is_pl4_outof_lock = (val & x);
756
757 /* ??? If this fails, might be able to software reset the XAUI part
758 * and try to recover... thus saving us from doing another HW reset */
759 /* Has the XAUI MABC PLL circuitry stablized? */
760 is_xaui_mabc_pll_locked =
761 (val & SUNI1x10GEXP_BITMSK_TOP_SXRA_EXPIRED);
762
763 successful_reset = (is_pl4_reset_finished && !is_pl4_outof_lock
764 && is_xaui_mabc_pll_locked);
765
766 if (netif_msg_hw(adapter))
767 dev_dbg(&adapter->pdev->dev,
768 "PM3393 HW reset %d: pl4_reset 0x%x, val 0x%x, "
769 "is_pl4_outof_lock 0x%x, xaui_locked 0x%x\n",
770 i, is_pl4_reset_finished, val,
771 is_pl4_outof_lock, is_xaui_mabc_pll_locked);
772 }
773 return successful_reset ? 0 : 1;
774 }
775
776 const struct gmac t1_pm3393_ops = {
777 .stats_update_period = STATS_TICK_SECS,
778 .create = pm3393_mac_create,
779 .reset = pm3393_mac_reset,
780 };
781