76a7ca9e0947880fad86d16633c8a584f468d16c
[linux-3.10.git] / drivers / net / chelsio / pm3393.c
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 static void pm3393_rmon_update(struct adapter *adapter, u32 offs, u64 *val,
432                                int over)
433 {
434         u32 val0, val1, val2;
435
436         t1_tpi_read(adapter, offs, &val0);
437         t1_tpi_read(adapter, offs + 4, &val1);
438         t1_tpi_read(adapter, offs + 8, &val2);
439
440         *val &= ~0ull << 40;
441         *val |= val0 & 0xffff;
442         *val |= (val1 & 0xffff) << 16;
443         *val |= (u64)(val2 & 0xff) << 32;
444
445         if (over)
446                 *val += 1ull << 40;
447 }
448
449 #define RMON_UPDATE(mac, name, stat_name) \
450         pm3393_rmon_update((mac)->adapter, OFFSET(name),                \
451                            &(mac)->stats.stat_name,                     \
452                    (ro &((name - SUNI1x10GEXP_REG_MSTAT_COUNTER_0_LOW) >> 2)))
453
454
455 static const struct cmac_statistics *pm3393_update_statistics(struct cmac *mac,
456                                                               int flag)
457 {
458         u64 ro;
459         u32 val0, val1, val2, val3;
460
461         /* Snap the counters */
462         pmwrite(mac, SUNI1x10GEXP_REG_MSTAT_CONTROL,
463                 SUNI1x10GEXP_BITMSK_MSTAT_SNAP);
464
465         /* Counter rollover, clear on read */
466         pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_0, &val0);
467         pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_1, &val1);
468         pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_2, &val2);
469         pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_3, &val3);
470         ro = ((u64)val0 & 0xffff) | (((u64)val1 & 0xffff) << 16) |
471                 (((u64)val2 & 0xffff) << 32) | (((u64)val3 & 0xffff) << 48);
472
473         /* Rx stats */
474         RMON_UPDATE(mac, RxOctetsReceivedOK, RxOctetsOK);
475         RMON_UPDATE(mac, RxUnicastFramesReceivedOK, RxUnicastFramesOK);
476         RMON_UPDATE(mac, RxMulticastFramesReceivedOK, RxMulticastFramesOK);
477         RMON_UPDATE(mac, RxBroadcastFramesReceivedOK, RxBroadcastFramesOK);
478         RMON_UPDATE(mac, RxPAUSEMACCtrlFramesReceived, RxPauseFrames);
479         RMON_UPDATE(mac, RxFrameCheckSequenceErrors, RxFCSErrors);
480         RMON_UPDATE(mac, RxFramesLostDueToInternalMACErrors,
481                                 RxInternalMACRcvError);
482         RMON_UPDATE(mac, RxSymbolErrors, RxSymbolErrors);
483         RMON_UPDATE(mac, RxInRangeLengthErrors, RxInRangeLengthErrors);
484         RMON_UPDATE(mac, RxFramesTooLongErrors , RxFrameTooLongErrors);
485         RMON_UPDATE(mac, RxJabbers, RxJabberErrors);
486         RMON_UPDATE(mac, RxFragments, RxRuntErrors);
487         RMON_UPDATE(mac, RxUndersizedFrames, RxRuntErrors);
488         RMON_UPDATE(mac, RxJumboFramesReceivedOK, RxJumboFramesOK);
489         RMON_UPDATE(mac, RxJumboOctetsReceivedOK, RxJumboOctetsOK);
490
491         /* Tx stats */
492         RMON_UPDATE(mac, TxOctetsTransmittedOK, TxOctetsOK);
493         RMON_UPDATE(mac, TxFramesLostDueToInternalMACTransmissionError,
494                                 TxInternalMACXmitError);
495         RMON_UPDATE(mac, TxTransmitSystemError, TxFCSErrors);
496         RMON_UPDATE(mac, TxUnicastFramesTransmittedOK, TxUnicastFramesOK);
497         RMON_UPDATE(mac, TxMulticastFramesTransmittedOK, TxMulticastFramesOK);
498         RMON_UPDATE(mac, TxBroadcastFramesTransmittedOK, TxBroadcastFramesOK);
499         RMON_UPDATE(mac, TxPAUSEMACCtrlFramesTransmitted, TxPauseFrames);
500         RMON_UPDATE(mac, TxJumboFramesReceivedOK, TxJumboFramesOK);
501         RMON_UPDATE(mac, TxJumboOctetsReceivedOK, TxJumboOctetsOK);
502
503         return &mac->stats;
504 }
505
506 static int pm3393_macaddress_get(struct cmac *cmac, u8 mac_addr[6])
507 {
508         memcpy(mac_addr, cmac->instance->mac_addr, 6);
509         return 0;
510 }
511
512 static int pm3393_macaddress_set(struct cmac *cmac, u8 ma[6])
513 {
514         u32 val, lo, mid, hi, enabled = cmac->instance->enabled;
515
516         /*
517          * MAC addr: 00:07:43:00:13:09
518          *
519          * ma[5] = 0x09
520          * ma[4] = 0x13
521          * ma[3] = 0x00
522          * ma[2] = 0x43
523          * ma[1] = 0x07
524          * ma[0] = 0x00
525          *
526          * The PM3393 requires byte swapping and reverse order entry
527          * when programming MAC addresses:
528          *
529          * low_bits[15:0]    = ma[1]:ma[0]
530          * mid_bits[31:16]   = ma[3]:ma[2]
531          * high_bits[47:32]  = ma[5]:ma[4]
532          */
533
534         /* Store local copy */
535         memcpy(cmac->instance->mac_addr, ma, 6);
536
537         lo  = ((u32) ma[1] << 8) | (u32) ma[0];
538         mid = ((u32) ma[3] << 8) | (u32) ma[2];
539         hi  = ((u32) ma[5] << 8) | (u32) ma[4];
540
541         /* Disable Rx/Tx MAC before configuring it. */
542         if (enabled)
543                 pm3393_disable(cmac, MAC_DIRECTION_RX | MAC_DIRECTION_TX);
544
545         /* Set RXXG Station Address */
546         pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_SA_15_0, lo);
547         pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_SA_31_16, mid);
548         pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_SA_47_32, hi);
549
550         /* Set TXXG Station Address */
551         pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_SA_15_0, lo);
552         pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_SA_31_16, mid);
553         pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_SA_47_32, hi);
554
555         /* Setup Exact Match Filter 1 with our MAC address
556          *
557          * Must disable exact match filter before configuring it.
558          */
559         pmread(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_0, &val);
560         val &= 0xff0f;
561         pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_0, val);
562
563         pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_EXACT_MATCH_ADDR_1_LOW, lo);
564         pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_EXACT_MATCH_ADDR_1_MID, mid);
565         pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_EXACT_MATCH_ADDR_1_HIGH, hi);
566
567         val |= 0x0090;
568         pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_0, val);
569
570         if (enabled)
571                 pm3393_enable(cmac, enabled);
572         return 0;
573 }
574
575 static void pm3393_destroy(struct cmac *cmac)
576 {
577         kfree(cmac);
578 }
579
580 static struct cmac_ops pm3393_ops = {
581         .destroy                 = pm3393_destroy,
582         .reset                   = pm3393_reset,
583         .interrupt_enable        = pm3393_interrupt_enable,
584         .interrupt_disable       = pm3393_interrupt_disable,
585         .interrupt_clear         = pm3393_interrupt_clear,
586         .interrupt_handler       = pm3393_interrupt_handler,
587         .enable                  = pm3393_enable_port,
588         .disable                 = pm3393_disable,
589         .loopback_enable         = pm3393_loopback_enable,
590         .loopback_disable        = pm3393_loopback_disable,
591         .set_mtu                 = pm3393_set_mtu,
592         .set_rx_mode             = pm3393_set_rx_mode,
593         .get_speed_duplex_fc     = pm3393_get_speed_duplex_fc,
594         .set_speed_duplex_fc     = pm3393_set_speed_duplex_fc,
595         .statistics_update       = pm3393_update_statistics,
596         .macaddress_get          = pm3393_macaddress_get,
597         .macaddress_set          = pm3393_macaddress_set
598 };
599
600 static struct cmac *pm3393_mac_create(adapter_t *adapter, int index)
601 {
602         struct cmac *cmac;
603
604         cmac = kzalloc(sizeof(*cmac) + sizeof(cmac_instance), GFP_KERNEL);
605         if (!cmac)
606                 return NULL;
607
608         cmac->ops = &pm3393_ops;
609         cmac->instance = (cmac_instance *) (cmac + 1);
610         cmac->adapter = adapter;
611         cmac->instance->fc = PAUSE_TX | PAUSE_RX;
612
613         t1_tpi_write(adapter, OFFSET(0x0001), 0x00008000);
614         t1_tpi_write(adapter, OFFSET(0x0001), 0x00000000);
615         t1_tpi_write(adapter, OFFSET(0x2308), 0x00009800);
616         t1_tpi_write(adapter, OFFSET(0x2305), 0x00001001);   /* PL4IO Enable */
617         t1_tpi_write(adapter, OFFSET(0x2320), 0x00008800);
618         t1_tpi_write(adapter, OFFSET(0x2321), 0x00008800);
619         t1_tpi_write(adapter, OFFSET(0x2322), 0x00008800);
620         t1_tpi_write(adapter, OFFSET(0x2323), 0x00008800);
621         t1_tpi_write(adapter, OFFSET(0x2324), 0x00008800);
622         t1_tpi_write(adapter, OFFSET(0x2325), 0x00008800);
623         t1_tpi_write(adapter, OFFSET(0x2326), 0x00008800);
624         t1_tpi_write(adapter, OFFSET(0x2327), 0x00008800);
625         t1_tpi_write(adapter, OFFSET(0x2328), 0x00008800);
626         t1_tpi_write(adapter, OFFSET(0x2329), 0x00008800);
627         t1_tpi_write(adapter, OFFSET(0x232a), 0x00008800);
628         t1_tpi_write(adapter, OFFSET(0x232b), 0x00008800);
629         t1_tpi_write(adapter, OFFSET(0x232c), 0x00008800);
630         t1_tpi_write(adapter, OFFSET(0x232d), 0x00008800);
631         t1_tpi_write(adapter, OFFSET(0x232e), 0x00008800);
632         t1_tpi_write(adapter, OFFSET(0x232f), 0x00008800);
633         t1_tpi_write(adapter, OFFSET(0x230d), 0x00009c00);
634         t1_tpi_write(adapter, OFFSET(0x2304), 0x00000202);      /* PL4IO Calendar Repetitions */
635
636         t1_tpi_write(adapter, OFFSET(0x3200), 0x00008080);      /* EFLX Enable */
637         t1_tpi_write(adapter, OFFSET(0x3210), 0x00000000);      /* EFLX Channel Deprovision */
638         t1_tpi_write(adapter, OFFSET(0x3203), 0x00000000);      /* EFLX Low Limit */
639         t1_tpi_write(adapter, OFFSET(0x3204), 0x00000040);      /* EFLX High Limit */
640         t1_tpi_write(adapter, OFFSET(0x3205), 0x000002cc);      /* EFLX Almost Full */
641         t1_tpi_write(adapter, OFFSET(0x3206), 0x00000199);      /* EFLX Almost Empty */
642         t1_tpi_write(adapter, OFFSET(0x3207), 0x00000240);      /* EFLX Cut Through Threshold */
643         t1_tpi_write(adapter, OFFSET(0x3202), 0x00000000);      /* EFLX Indirect Register Update */
644         t1_tpi_write(adapter, OFFSET(0x3210), 0x00000001);      /* EFLX Channel Provision */
645         t1_tpi_write(adapter, OFFSET(0x3208), 0x0000ffff);      /* EFLX Undocumented */
646         t1_tpi_write(adapter, OFFSET(0x320a), 0x0000ffff);      /* EFLX Undocumented */
647         t1_tpi_write(adapter, OFFSET(0x320c), 0x0000ffff);      /* EFLX enable overflow interrupt The other bit are undocumented */
648         t1_tpi_write(adapter, OFFSET(0x320e), 0x0000ffff);      /* EFLX Undocumented */
649
650         t1_tpi_write(adapter, OFFSET(0x2200), 0x0000c000);      /* IFLX Configuration - enable */
651         t1_tpi_write(adapter, OFFSET(0x2201), 0x00000000);      /* IFLX Channel Deprovision */
652         t1_tpi_write(adapter, OFFSET(0x220e), 0x00000000);      /* IFLX Low Limit */
653         t1_tpi_write(adapter, OFFSET(0x220f), 0x00000100);      /* IFLX High Limit */
654         t1_tpi_write(adapter, OFFSET(0x2210), 0x00000c00);      /* IFLX Almost Full Limit */
655         t1_tpi_write(adapter, OFFSET(0x2211), 0x00000599);      /* IFLX Almost Empty Limit */
656         t1_tpi_write(adapter, OFFSET(0x220d), 0x00000000);      /* IFLX Indirect Register Update */
657         t1_tpi_write(adapter, OFFSET(0x2201), 0x00000001);      /* IFLX Channel Provision */
658         t1_tpi_write(adapter, OFFSET(0x2203), 0x0000ffff);      /* IFLX Undocumented */
659         t1_tpi_write(adapter, OFFSET(0x2205), 0x0000ffff);      /* IFLX Undocumented */
660         t1_tpi_write(adapter, OFFSET(0x2209), 0x0000ffff);      /* IFLX Enable overflow interrupt.  The other bit are undocumented */
661
662         t1_tpi_write(adapter, OFFSET(0x2241), 0xfffffffe);      /* PL4MOS Undocumented */
663         t1_tpi_write(adapter, OFFSET(0x2242), 0x0000ffff);      /* PL4MOS Undocumented */
664         t1_tpi_write(adapter, OFFSET(0x2243), 0x00000008);      /* PL4MOS Starving Burst Size */
665         t1_tpi_write(adapter, OFFSET(0x2244), 0x00000008);      /* PL4MOS Hungry Burst Size */
666         t1_tpi_write(adapter, OFFSET(0x2245), 0x00000008);      /* PL4MOS Transfer Size */
667         t1_tpi_write(adapter, OFFSET(0x2240), 0x00000005);      /* PL4MOS Disable */
668
669         t1_tpi_write(adapter, OFFSET(0x2280), 0x00002103);      /* PL4ODP Training Repeat and SOP rule */
670         t1_tpi_write(adapter, OFFSET(0x2284), 0x00000000);      /* PL4ODP MAX_T setting */
671
672         t1_tpi_write(adapter, OFFSET(0x3280), 0x00000087);      /* PL4IDU Enable data forward, port state machine. Set ALLOW_NON_ZERO_OLB */
673         t1_tpi_write(adapter, OFFSET(0x3282), 0x0000001f);      /* PL4IDU Enable Dip4 check error interrupts */
674
675         t1_tpi_write(adapter, OFFSET(0x3040), 0x0c32);  /* # TXXG Config */
676         /* For T1 use timer based Mac flow control. */
677         t1_tpi_write(adapter, OFFSET(0x304d), 0x8000);
678         t1_tpi_write(adapter, OFFSET(0x2040), 0x059c);  /* # RXXG Config */
679         t1_tpi_write(adapter, OFFSET(0x2049), 0x0001);  /* # RXXG Cut Through */
680         t1_tpi_write(adapter, OFFSET(0x2070), 0x0000);  /* # Disable promiscuous mode */
681
682         /* Setup Exact Match Filter 0 to allow broadcast packets.
683          */
684         t1_tpi_write(adapter, OFFSET(0x206e), 0x0000);  /* # Disable Match Enable bit */
685         t1_tpi_write(adapter, OFFSET(0x204a), 0xffff);  /* # low addr */
686         t1_tpi_write(adapter, OFFSET(0x204b), 0xffff);  /* # mid addr */
687         t1_tpi_write(adapter, OFFSET(0x204c), 0xffff);  /* # high addr */
688         t1_tpi_write(adapter, OFFSET(0x206e), 0x0009);  /* # Enable Match Enable bit */
689
690         t1_tpi_write(adapter, OFFSET(0x0003), 0x0000);  /* # NO SOP/ PAD_EN setup */
691         t1_tpi_write(adapter, OFFSET(0x0100), 0x0ff0);  /* # RXEQB disabled */
692         t1_tpi_write(adapter, OFFSET(0x0101), 0x0f0f);  /* # No Preemphasis */
693
694         return cmac;
695 }
696
697 static int pm3393_mac_reset(adapter_t * adapter)
698 {
699         u32 val;
700         u32 x;
701         u32 is_pl4_reset_finished;
702         u32 is_pl4_outof_lock;
703         u32 is_xaui_mabc_pll_locked;
704         u32 successful_reset;
705         int i;
706
707         /* The following steps are required to properly reset
708          * the PM3393. This information is provided in the
709          * PM3393 datasheet (Issue 2: November 2002)
710          * section 13.1 -- Device Reset.
711          *
712          * The PM3393 has three types of components that are
713          * individually reset:
714          *
715          * DRESETB      - Digital circuitry
716          * PL4_ARESETB  - PL4 analog circuitry
717          * XAUI_ARESETB - XAUI bus analog circuitry
718          *
719          * Steps to reset PM3393 using RSTB pin:
720          *
721          * 1. Assert RSTB pin low ( write 0 )
722          * 2. Wait at least 1ms to initiate a complete initialization of device.
723          * 3. Wait until all external clocks and REFSEL are stable.
724          * 4. Wait minimum of 1ms. (after external clocks and REFEL are stable)
725          * 5. De-assert RSTB ( write 1 )
726          * 6. Wait until internal timers to expires after ~14ms.
727          *    - Allows analog clock synthesizer(PL4CSU) to stabilize to
728          *      selected reference frequency before allowing the digital
729          *      portion of the device to operate.
730          * 7. Wait at least 200us for XAUI interface to stabilize.
731          * 8. Verify the PM3393 came out of reset successfully.
732          *    Set successful reset flag if everything worked else try again
733          *    a few more times.
734          */
735
736         successful_reset = 0;
737         for (i = 0; i < 3 && !successful_reset; i++) {
738                 /* 1 */
739                 t1_tpi_read(adapter, A_ELMER0_GPO, &val);
740                 val &= ~1;
741                 t1_tpi_write(adapter, A_ELMER0_GPO, val);
742
743                 /* 2 */
744                 msleep(1);
745
746                 /* 3 */
747                 msleep(1);
748
749                 /* 4 */
750                 msleep(2 /*1 extra ms for safety */ );
751
752                 /* 5 */
753                 val |= 1;
754                 t1_tpi_write(adapter, A_ELMER0_GPO, val);
755
756                 /* 6 */
757                 msleep(15 /*1 extra ms for safety */ );
758
759                 /* 7 */
760                 msleep(1);
761
762                 /* 8 */
763
764                 /* Has PL4 analog block come out of reset correctly? */
765                 t1_tpi_read(adapter, OFFSET(SUNI1x10GEXP_REG_DEVICE_STATUS), &val);
766                 is_pl4_reset_finished = (val & SUNI1x10GEXP_BITMSK_TOP_EXPIRED);
767
768                 /* TBD XXX SUNI1x10GEXP_BITMSK_TOP_PL4_IS_DOOL gets locked later in the init sequence
769                  *         figure out why? */
770
771                 /* Have all PL4 block clocks locked? */
772                 x = (SUNI1x10GEXP_BITMSK_TOP_PL4_ID_DOOL
773                      /*| SUNI1x10GEXP_BITMSK_TOP_PL4_IS_DOOL */  |
774                      SUNI1x10GEXP_BITMSK_TOP_PL4_ID_ROOL |
775                      SUNI1x10GEXP_BITMSK_TOP_PL4_IS_ROOL |
776                      SUNI1x10GEXP_BITMSK_TOP_PL4_OUT_ROOL);
777                 is_pl4_outof_lock = (val & x);
778
779                 /* ??? If this fails, might be able to software reset the XAUI part
780                  *     and try to recover... thus saving us from doing another HW reset */
781                 /* Has the XAUI MABC PLL circuitry stablized? */
782                 is_xaui_mabc_pll_locked =
783                     (val & SUNI1x10GEXP_BITMSK_TOP_SXRA_EXPIRED);
784
785                 successful_reset = (is_pl4_reset_finished && !is_pl4_outof_lock
786                                     && is_xaui_mabc_pll_locked);
787
788                 CH_DBG(adapter, HW,
789                        "PM3393 HW reset %d: pl4_reset 0x%x, val 0x%x, "
790                        "is_pl4_outof_lock 0x%x, xaui_locked 0x%x\n",
791                        i, is_pl4_reset_finished, val, is_pl4_outof_lock,
792                        is_xaui_mabc_pll_locked);
793         }
794         return successful_reset ? 0 : 1;
795 }
796
797 struct gmac t1_pm3393_ops = {
798         STATS_TICK_SECS,
799         pm3393_mac_create,
800         pm3393_mac_reset
801 };