sh: convert /proc/cpu/aligmnent, /proc/cpu/kernel_alignment to seq_file
[safe/jmp/linux-2.6] / drivers / net / chelsio / subr.c
1 /*****************************************************************************
2  *                                                                           *
3  * File: subr.c                                                              *
4  * $Revision: 1.27 $                                                         *
5  * $Date: 2005/06/22 01:08:36 $                                              *
6  * Description:                                                              *
7  *  Various subroutines (intr,pio,etc.) used by Chelsio 10G Ethernet driver. *
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 "elmer0.h"
42 #include "regs.h"
43 #include "gmac.h"
44 #include "cphy.h"
45 #include "sge.h"
46 #include "tp.h"
47 #include "espi.h"
48
49 /**
50  *      t1_wait_op_done - wait until an operation is completed
51  *      @adapter: the adapter performing the operation
52  *      @reg: the register to check for completion
53  *      @mask: a single-bit field within @reg that indicates completion
54  *      @polarity: the value of the field when the operation is completed
55  *      @attempts: number of check iterations
56  *      @delay: delay in usecs between iterations
57  *
58  *      Wait until an operation is completed by checking a bit in a register
59  *      up to @attempts times.  Returns %0 if the operation completes and %1
60  *      otherwise.
61  */
62 static int t1_wait_op_done(adapter_t *adapter, int reg, u32 mask, int polarity,
63                            int attempts, int delay)
64 {
65         while (1) {
66                 u32 val = readl(adapter->regs + reg) & mask;
67
68                 if (!!val == polarity)
69                         return 0;
70                 if (--attempts == 0)
71                         return 1;
72                 if (delay)
73                         udelay(delay);
74         }
75 }
76
77 #define TPI_ATTEMPTS 50
78
79 /*
80  * Write a register over the TPI interface (unlocked and locked versions).
81  */
82 int __t1_tpi_write(adapter_t *adapter, u32 addr, u32 value)
83 {
84         int tpi_busy;
85
86         writel(addr, adapter->regs + A_TPI_ADDR);
87         writel(value, adapter->regs + A_TPI_WR_DATA);
88         writel(F_TPIWR, adapter->regs + A_TPI_CSR);
89
90         tpi_busy = t1_wait_op_done(adapter, A_TPI_CSR, F_TPIRDY, 1,
91                                    TPI_ATTEMPTS, 3);
92         if (tpi_busy)
93                 CH_ALERT("%s: TPI write to 0x%x failed\n",
94                          adapter->name, addr);
95         return tpi_busy;
96 }
97
98 int t1_tpi_write(adapter_t *adapter, u32 addr, u32 value)
99 {
100         int ret;
101
102         spin_lock(&adapter->tpi_lock);
103         ret = __t1_tpi_write(adapter, addr, value);
104         spin_unlock(&adapter->tpi_lock);
105         return ret;
106 }
107
108 /*
109  * Read a register over the TPI interface (unlocked and locked versions).
110  */
111 int __t1_tpi_read(adapter_t *adapter, u32 addr, u32 *valp)
112 {
113         int tpi_busy;
114
115         writel(addr, adapter->regs + A_TPI_ADDR);
116         writel(0, adapter->regs + A_TPI_CSR);
117
118         tpi_busy = t1_wait_op_done(adapter, A_TPI_CSR, F_TPIRDY, 1,
119                                    TPI_ATTEMPTS, 3);
120         if (tpi_busy)
121                 CH_ALERT("%s: TPI read from 0x%x failed\n",
122                          adapter->name, addr);
123         else
124                 *valp = readl(adapter->regs + A_TPI_RD_DATA);
125         return tpi_busy;
126 }
127
128 int t1_tpi_read(adapter_t *adapter, u32 addr, u32 *valp)
129 {
130         int ret;
131
132         spin_lock(&adapter->tpi_lock);
133         ret = __t1_tpi_read(adapter, addr, valp);
134         spin_unlock(&adapter->tpi_lock);
135         return ret;
136 }
137
138 /*
139  * Set a TPI parameter.
140  */
141 static void t1_tpi_par(adapter_t *adapter, u32 value)
142 {
143         writel(V_TPIPAR(value), adapter->regs + A_TPI_PAR);
144 }
145
146 /*
147  * Called when a port's link settings change to propagate the new values to the
148  * associated PHY and MAC.  After performing the common tasks it invokes an
149  * OS-specific handler.
150  */
151 void t1_link_changed(adapter_t *adapter, int port_id)
152 {
153         int link_ok, speed, duplex, fc;
154         struct cphy *phy = adapter->port[port_id].phy;
155         struct link_config *lc = &adapter->port[port_id].link_config;
156
157         phy->ops->get_link_status(phy, &link_ok, &speed, &duplex, &fc);
158
159         lc->speed = speed < 0 ? SPEED_INVALID : speed;
160         lc->duplex = duplex < 0 ? DUPLEX_INVALID : duplex;
161         if (!(lc->requested_fc & PAUSE_AUTONEG))
162                 fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);
163
164         if (link_ok && speed >= 0 && lc->autoneg == AUTONEG_ENABLE) {
165                 /* Set MAC speed, duplex, and flow control to match PHY. */
166                 struct cmac *mac = adapter->port[port_id].mac;
167
168                 mac->ops->set_speed_duplex_fc(mac, speed, duplex, fc);
169                 lc->fc = (unsigned char)fc;
170         }
171         t1_link_negotiated(adapter, port_id, link_ok, speed, duplex, fc);
172 }
173
174 static int t1_pci_intr_handler(adapter_t *adapter)
175 {
176         u32 pcix_cause;
177
178         pci_read_config_dword(adapter->pdev, A_PCICFG_INTR_CAUSE, &pcix_cause);
179
180         if (pcix_cause) {
181                 pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_CAUSE,
182                                        pcix_cause);
183                 t1_fatal_err(adapter);    /* PCI errors are fatal */
184         }
185         return 0;
186 }
187
188 #ifdef CONFIG_CHELSIO_T1_COUGAR
189 #include "cspi.h"
190 #endif
191 #ifdef CONFIG_CHELSIO_T1_1G
192 #include "fpga_defs.h"
193
194 /*
195  * PHY interrupt handler for FPGA boards.
196  */
197 static int fpga_phy_intr_handler(adapter_t *adapter)
198 {
199         int p;
200         u32 cause = readl(adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_CAUSE);
201
202         for_each_port(adapter, p)
203                 if (cause & (1 << p)) {
204                         struct cphy *phy = adapter->port[p].phy;
205                         int phy_cause = phy->ops->interrupt_handler(phy);
206
207                         if (phy_cause & cphy_cause_link_change)
208                                 t1_link_changed(adapter, p);
209                 }
210         writel(cause, adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_CAUSE);
211         return 0;
212 }
213
214 /*
215  * Slow path interrupt handler for FPGAs.
216  */
217 static int fpga_slow_intr(adapter_t *adapter)
218 {
219         u32 cause = readl(adapter->regs + A_PL_CAUSE);
220
221         cause &= ~F_PL_INTR_SGE_DATA;
222         if (cause & F_PL_INTR_SGE_ERR)
223                 t1_sge_intr_error_handler(adapter->sge);
224
225         if (cause & FPGA_PCIX_INTERRUPT_GMAC)
226                 fpga_phy_intr_handler(adapter);
227
228         if (cause & FPGA_PCIX_INTERRUPT_TP) {
229                 /*
230                  * FPGA doesn't support MC4 interrupts and it requires
231                  * this odd layer of indirection for MC5.
232                  */
233                 u32 tp_cause = readl(adapter->regs + FPGA_TP_ADDR_INTERRUPT_CAUSE);
234
235                 /* Clear TP interrupt */
236                 writel(tp_cause, adapter->regs + FPGA_TP_ADDR_INTERRUPT_CAUSE);
237         }
238         if (cause & FPGA_PCIX_INTERRUPT_PCIX)
239                 t1_pci_intr_handler(adapter);
240
241         /* Clear the interrupts just processed. */
242         if (cause)
243                 writel(cause, adapter->regs + A_PL_CAUSE);
244
245         return cause != 0;
246 }
247 #endif
248
249 /*
250  * Wait until Elmer's MI1 interface is ready for new operations.
251  */
252 static int mi1_wait_until_ready(adapter_t *adapter, int mi1_reg)
253 {
254         int attempts = 100, busy;
255
256         do {
257                 u32 val;
258
259                 __t1_tpi_read(adapter, mi1_reg, &val);
260                 busy = val & F_MI1_OP_BUSY;
261                 if (busy)
262                         udelay(10);
263         } while (busy && --attempts);
264         if (busy)
265                 CH_ALERT("%s: MDIO operation timed out\n", adapter->name);
266         return busy;
267 }
268
269 /*
270  * MI1 MDIO initialization.
271  */
272 static void mi1_mdio_init(adapter_t *adapter, const struct board_info *bi)
273 {
274         u32 clkdiv = bi->clock_elmer0 / (2 * bi->mdio_mdc) - 1;
275         u32 val = F_MI1_PREAMBLE_ENABLE | V_MI1_MDI_INVERT(bi->mdio_mdiinv) |
276                 V_MI1_MDI_ENABLE(bi->mdio_mdien) | V_MI1_CLK_DIV(clkdiv);
277
278         if (!(bi->caps & SUPPORTED_10000baseT_Full))
279                 val |= V_MI1_SOF(1);
280         t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_CFG, val);
281 }
282
283 #if defined(CONFIG_CHELSIO_T1_1G) || defined(CONFIG_CHELSIO_T1_COUGAR)
284 /*
285  * Elmer MI1 MDIO read/write operations.
286  */
287 static int mi1_mdio_read(struct net_device *dev, int phy_addr, int mmd_addr,
288                          u16 reg_addr)
289 {
290         struct adapter *adapter = dev->ml_priv;
291         u32 addr = V_MI1_REG_ADDR(reg_addr) | V_MI1_PHY_ADDR(phy_addr);
292         unsigned int val;
293
294         spin_lock(&adapter->tpi_lock);
295         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);
296         __t1_tpi_write(adapter,
297                         A_ELMER0_PORT0_MI1_OP, MI1_OP_DIRECT_READ);
298         mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
299         __t1_tpi_read(adapter, A_ELMER0_PORT0_MI1_DATA, &val);
300         spin_unlock(&adapter->tpi_lock);
301         return val;
302 }
303
304 static int mi1_mdio_write(struct net_device *dev, int phy_addr, int mmd_addr,
305                           u16 reg_addr, u16 val)
306 {
307         struct adapter *adapter = dev->ml_priv;
308         u32 addr = V_MI1_REG_ADDR(reg_addr) | V_MI1_PHY_ADDR(phy_addr);
309
310         spin_lock(&adapter->tpi_lock);
311         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);
312         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, val);
313         __t1_tpi_write(adapter,
314                         A_ELMER0_PORT0_MI1_OP, MI1_OP_DIRECT_WRITE);
315         mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
316         spin_unlock(&adapter->tpi_lock);
317         return 0;
318 }
319
320 #if defined(CONFIG_CHELSIO_T1_1G) || defined(CONFIG_CHELSIO_T1_COUGAR)
321 static const struct mdio_ops mi1_mdio_ops = {
322         .init = mi1_mdio_init,
323         .read = mi1_mdio_read,
324         .write = mi1_mdio_write,
325         .mode_support = MDIO_SUPPORTS_C22
326 };
327 #endif
328
329 #endif
330
331 static int mi1_mdio_ext_read(struct net_device *dev, int phy_addr, int mmd_addr,
332                              u16 reg_addr)
333 {
334         struct adapter *adapter = dev->ml_priv;
335         u32 addr = V_MI1_REG_ADDR(mmd_addr) | V_MI1_PHY_ADDR(phy_addr);
336         unsigned int val;
337
338         spin_lock(&adapter->tpi_lock);
339
340         /* Write the address we want. */
341         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);
342         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, reg_addr);
343         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_OP,
344                        MI1_OP_INDIRECT_ADDRESS);
345         mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
346
347         /* Write the operation we want. */
348         __t1_tpi_write(adapter,
349                         A_ELMER0_PORT0_MI1_OP, MI1_OP_INDIRECT_READ);
350         mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
351
352         /* Read the data. */
353         __t1_tpi_read(adapter, A_ELMER0_PORT0_MI1_DATA, &val);
354         spin_unlock(&adapter->tpi_lock);
355         return val;
356 }
357
358 static int mi1_mdio_ext_write(struct net_device *dev, int phy_addr,
359                               int mmd_addr, u16 reg_addr, u16 val)
360 {
361         struct adapter *adapter = dev->ml_priv;
362         u32 addr = V_MI1_REG_ADDR(mmd_addr) | V_MI1_PHY_ADDR(phy_addr);
363
364         spin_lock(&adapter->tpi_lock);
365
366         /* Write the address we want. */
367         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);
368         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, reg_addr);
369         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_OP,
370                        MI1_OP_INDIRECT_ADDRESS);
371         mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
372
373         /* Write the data. */
374         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, val);
375         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_OP, MI1_OP_INDIRECT_WRITE);
376         mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
377         spin_unlock(&adapter->tpi_lock);
378         return 0;
379 }
380
381 static const struct mdio_ops mi1_mdio_ext_ops = {
382         .init = mi1_mdio_init,
383         .read = mi1_mdio_ext_read,
384         .write = mi1_mdio_ext_write,
385         .mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22
386 };
387
388 enum {
389         CH_BRD_T110_1CU,
390         CH_BRD_N110_1F,
391         CH_BRD_N210_1F,
392         CH_BRD_T210_1F,
393         CH_BRD_T210_1CU,
394         CH_BRD_N204_4CU,
395 };
396
397 static const struct board_info t1_board[] = {
398         {
399                 .board          = CHBT_BOARD_CHT110,
400                 .port_number    = 1,
401                 .caps           = SUPPORTED_10000baseT_Full,
402                 .chip_term      = CHBT_TERM_T1,
403                 .chip_mac       = CHBT_MAC_PM3393,
404                 .chip_phy       = CHBT_PHY_MY3126,
405                 .clock_core     = 125000000,
406                 .clock_mc3      = 150000000,
407                 .clock_mc4      = 125000000,
408                 .espi_nports    = 1,
409                 .clock_elmer0   = 44,
410                 .mdio_mdien     = 1,
411                 .mdio_mdiinv    = 1,
412                 .mdio_mdc       = 1,
413                 .mdio_phybaseaddr = 1,
414                 .gmac           = &t1_pm3393_ops,
415                 .gphy           = &t1_my3126_ops,
416                 .mdio_ops       = &mi1_mdio_ext_ops,
417                 .desc           = "Chelsio T110 1x10GBase-CX4 TOE",
418         },
419
420         {
421                 .board          = CHBT_BOARD_N110,
422                 .port_number    = 1,
423                 .caps           = SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE,
424                 .chip_term      = CHBT_TERM_T1,
425                 .chip_mac       = CHBT_MAC_PM3393,
426                 .chip_phy       = CHBT_PHY_88X2010,
427                 .clock_core     = 125000000,
428                 .espi_nports    = 1,
429                 .clock_elmer0   = 44,
430                 .mdio_mdien     = 0,
431                 .mdio_mdiinv    = 0,
432                 .mdio_mdc       = 1,
433                 .mdio_phybaseaddr = 0,
434                 .gmac           = &t1_pm3393_ops,
435                 .gphy           = &t1_mv88x201x_ops,
436                 .mdio_ops       = &mi1_mdio_ext_ops,
437                 .desc           = "Chelsio N110 1x10GBaseX NIC",
438         },
439
440         {
441                 .board          = CHBT_BOARD_N210,
442                 .port_number    = 1,
443                 .caps           = SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE,
444                 .chip_term      = CHBT_TERM_T2,
445                 .chip_mac       = CHBT_MAC_PM3393,
446                 .chip_phy       = CHBT_PHY_88X2010,
447                 .clock_core     = 125000000,
448                 .espi_nports    = 1,
449                 .clock_elmer0   = 44,
450                 .mdio_mdien     = 0,
451                 .mdio_mdiinv    = 0,
452                 .mdio_mdc       = 1,
453                 .mdio_phybaseaddr = 0,
454                 .gmac           = &t1_pm3393_ops,
455                 .gphy           = &t1_mv88x201x_ops,
456                 .mdio_ops       = &mi1_mdio_ext_ops,
457                 .desc           = "Chelsio N210 1x10GBaseX NIC",
458         },
459
460         {
461                 .board          = CHBT_BOARD_CHT210,
462                 .port_number    = 1,
463                 .caps           = SUPPORTED_10000baseT_Full,
464                 .chip_term      = CHBT_TERM_T2,
465                 .chip_mac       = CHBT_MAC_PM3393,
466                 .chip_phy       = CHBT_PHY_88X2010,
467                 .clock_core     = 125000000,
468                 .clock_mc3      = 133000000,
469                 .clock_mc4      = 125000000,
470                 .espi_nports    = 1,
471                 .clock_elmer0   = 44,
472                 .mdio_mdien     = 0,
473                 .mdio_mdiinv    = 0,
474                 .mdio_mdc       = 1,
475                 .mdio_phybaseaddr = 0,
476                 .gmac           = &t1_pm3393_ops,
477                 .gphy           = &t1_mv88x201x_ops,
478                 .mdio_ops       = &mi1_mdio_ext_ops,
479                 .desc           = "Chelsio T210 1x10GBaseX TOE",
480         },
481
482         {
483                 .board          = CHBT_BOARD_CHT210,
484                 .port_number    = 1,
485                 .caps           = SUPPORTED_10000baseT_Full,
486                 .chip_term      = CHBT_TERM_T2,
487                 .chip_mac       = CHBT_MAC_PM3393,
488                 .chip_phy       = CHBT_PHY_MY3126,
489                 .clock_core     = 125000000,
490                 .clock_mc3      = 133000000,
491                 .clock_mc4      = 125000000,
492                 .espi_nports    = 1,
493                 .clock_elmer0   = 44,
494                 .mdio_mdien     = 1,
495                 .mdio_mdiinv    = 1,
496                 .mdio_mdc       = 1,
497                 .mdio_phybaseaddr = 1,
498                 .gmac           = &t1_pm3393_ops,
499                 .gphy           = &t1_my3126_ops,
500                 .mdio_ops       = &mi1_mdio_ext_ops,
501                 .desc           = "Chelsio T210 1x10GBase-CX4 TOE",
502         },
503
504 #ifdef CONFIG_CHELSIO_T1_1G
505         {
506                 .board          = CHBT_BOARD_CHN204,
507                 .port_number    = 4,
508                 .caps           = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full
509                                 | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full
510                                 | SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg |
511                                   SUPPORTED_PAUSE | SUPPORTED_TP,
512                 .chip_term      = CHBT_TERM_T2,
513                 .chip_mac       = CHBT_MAC_VSC7321,
514                 .chip_phy       = CHBT_PHY_88E1111,
515                 .clock_core     = 100000000,
516                 .espi_nports    = 4,
517                 .clock_elmer0   = 44,
518                 .mdio_mdien     = 0,
519                 .mdio_mdiinv    = 0,
520                 .mdio_mdc       = 0,
521                 .mdio_phybaseaddr = 4,
522                 .gmac           = &t1_vsc7326_ops,
523                 .gphy           = &t1_mv88e1xxx_ops,
524                 .mdio_ops       = &mi1_mdio_ops,
525                 .desc           = "Chelsio N204 4x100/1000BaseT NIC",
526         },
527 #endif
528
529 };
530
531 struct pci_device_id t1_pci_tbl[] = {
532         CH_DEVICE(8, 0, CH_BRD_T110_1CU),
533         CH_DEVICE(8, 1, CH_BRD_T110_1CU),
534         CH_DEVICE(7, 0, CH_BRD_N110_1F),
535         CH_DEVICE(10, 1, CH_BRD_N210_1F),
536         CH_DEVICE(11, 1, CH_BRD_T210_1F),
537         CH_DEVICE(14, 1, CH_BRD_T210_1CU),
538         CH_DEVICE(16, 1, CH_BRD_N204_4CU),
539         { 0 }
540 };
541
542 MODULE_DEVICE_TABLE(pci, t1_pci_tbl);
543
544 /*
545  * Return the board_info structure with a given index.  Out-of-range indices
546  * return NULL.
547  */
548 const struct board_info *t1_get_board_info(unsigned int board_id)
549 {
550         return board_id < ARRAY_SIZE(t1_board) ? &t1_board[board_id] : NULL;
551 }
552
553 struct chelsio_vpd_t {
554         u32 format_version;
555         u8 serial_number[16];
556         u8 mac_base_address[6];
557         u8 pad[2];           /* make multiple-of-4 size requirement explicit */
558 };
559
560 #define EEPROMSIZE        (8 * 1024)
561 #define EEPROM_MAX_POLL   4
562
563 /*
564  * Read SEEPROM. A zero is written to the flag register when the addres is
565  * written to the Control register. The hardware device will set the flag to a
566  * one when 4B have been transferred to the Data register.
567  */
568 int t1_seeprom_read(adapter_t *adapter, u32 addr, __le32 *data)
569 {
570         int i = EEPROM_MAX_POLL;
571         u16 val;
572         u32 v;
573
574         if (addr >= EEPROMSIZE || (addr & 3))
575                 return -EINVAL;
576
577         pci_write_config_word(adapter->pdev, A_PCICFG_VPD_ADDR, (u16)addr);
578         do {
579                 udelay(50);
580                 pci_read_config_word(adapter->pdev, A_PCICFG_VPD_ADDR, &val);
581         } while (!(val & F_VPD_OP_FLAG) && --i);
582
583         if (!(val & F_VPD_OP_FLAG)) {
584                 CH_ERR("%s: reading EEPROM address 0x%x failed\n",
585                        adapter->name, addr);
586                 return -EIO;
587         }
588         pci_read_config_dword(adapter->pdev, A_PCICFG_VPD_DATA, &v);
589         *data = cpu_to_le32(v);
590         return 0;
591 }
592
593 static int t1_eeprom_vpd_get(adapter_t *adapter, struct chelsio_vpd_t *vpd)
594 {
595         int addr, ret = 0;
596
597         for (addr = 0; !ret && addr < sizeof(*vpd); addr += sizeof(u32))
598                 ret = t1_seeprom_read(adapter, addr,
599                                       (__le32 *)((u8 *)vpd + addr));
600
601         return ret;
602 }
603
604 /*
605  * Read a port's MAC address from the VPD ROM.
606  */
607 static int vpd_macaddress_get(adapter_t *adapter, int index, u8 mac_addr[])
608 {
609         struct chelsio_vpd_t vpd;
610
611         if (t1_eeprom_vpd_get(adapter, &vpd))
612                 return 1;
613         memcpy(mac_addr, vpd.mac_base_address, 5);
614         mac_addr[5] = vpd.mac_base_address[5] + index;
615         return 0;
616 }
617
618 /*
619  * Set up the MAC/PHY according to the requested link settings.
620  *
621  * If the PHY can auto-negotiate first decide what to advertise, then
622  * enable/disable auto-negotiation as desired and reset.
623  *
624  * If the PHY does not auto-negotiate we just reset it.
625  *
626  * If auto-negotiation is off set the MAC to the proper speed/duplex/FC,
627  * otherwise do it later based on the outcome of auto-negotiation.
628  */
629 int t1_link_start(struct cphy *phy, struct cmac *mac, struct link_config *lc)
630 {
631         unsigned int fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);
632
633         if (lc->supported & SUPPORTED_Autoneg) {
634                 lc->advertising &= ~(ADVERTISED_ASYM_PAUSE | ADVERTISED_PAUSE);
635                 if (fc) {
636                         if (fc == ((PAUSE_RX | PAUSE_TX) &
637                                    (mac->adapter->params.nports < 2)))
638                                 lc->advertising |= ADVERTISED_PAUSE;
639                         else {
640                                 lc->advertising |= ADVERTISED_ASYM_PAUSE;
641                                 if (fc == PAUSE_RX)
642                                         lc->advertising |= ADVERTISED_PAUSE;
643                         }
644                 }
645                 phy->ops->advertise(phy, lc->advertising);
646
647                 if (lc->autoneg == AUTONEG_DISABLE) {
648                         lc->speed = lc->requested_speed;
649                         lc->duplex = lc->requested_duplex;
650                         lc->fc = (unsigned char)fc;
651                         mac->ops->set_speed_duplex_fc(mac, lc->speed,
652                                                       lc->duplex, fc);
653                         /* Also disables autoneg */
654                         phy->state = PHY_AUTONEG_RDY;
655                         phy->ops->set_speed_duplex(phy, lc->speed, lc->duplex);
656                         phy->ops->reset(phy, 0);
657                 } else {
658                         phy->state = PHY_AUTONEG_EN;
659                         phy->ops->autoneg_enable(phy); /* also resets PHY */
660                 }
661         } else {
662                 phy->state = PHY_AUTONEG_RDY;
663                 mac->ops->set_speed_duplex_fc(mac, -1, -1, fc);
664                 lc->fc = (unsigned char)fc;
665                 phy->ops->reset(phy, 0);
666         }
667         return 0;
668 }
669
670 /*
671  * External interrupt handler for boards using elmer0.
672  */
673 int t1_elmer0_ext_intr_handler(adapter_t *adapter)
674 {
675         struct cphy *phy;
676         int phy_cause;
677         u32 cause;
678
679         t1_tpi_read(adapter, A_ELMER0_INT_CAUSE, &cause);
680
681         switch (board_info(adapter)->board) {
682 #ifdef CONFIG_CHELSIO_T1_1G
683         case CHBT_BOARD_CHT204:
684         case CHBT_BOARD_CHT204E:
685         case CHBT_BOARD_CHN204:
686         case CHBT_BOARD_CHT204V: {
687                 int i, port_bit;
688                 for_each_port(adapter, i) {
689                         port_bit = i + 1;
690                         if (!(cause & (1 << port_bit)))
691                                 continue;
692
693                         phy = adapter->port[i].phy;
694                         phy_cause = phy->ops->interrupt_handler(phy);
695                         if (phy_cause & cphy_cause_link_change)
696                                 t1_link_changed(adapter, i);
697                 }
698                 break;
699         }
700         case CHBT_BOARD_CHT101:
701                 if (cause & ELMER0_GP_BIT1) { /* Marvell 88E1111 interrupt */
702                         phy = adapter->port[0].phy;
703                         phy_cause = phy->ops->interrupt_handler(phy);
704                         if (phy_cause & cphy_cause_link_change)
705                                 t1_link_changed(adapter, 0);
706                 }
707                 break;
708         case CHBT_BOARD_7500: {
709                 int p;
710                 /*
711                  * Elmer0's interrupt cause isn't useful here because there is
712                  * only one bit that can be set for all 4 ports.  This means
713                  * we are forced to check every PHY's interrupt status
714                  * register to see who initiated the interrupt.
715                  */
716                 for_each_port(adapter, p) {
717                         phy = adapter->port[p].phy;
718                         phy_cause = phy->ops->interrupt_handler(phy);
719                         if (phy_cause & cphy_cause_link_change)
720                             t1_link_changed(adapter, p);
721                 }
722                 break;
723         }
724 #endif
725         case CHBT_BOARD_CHT210:
726         case CHBT_BOARD_N210:
727         case CHBT_BOARD_N110:
728                 if (cause & ELMER0_GP_BIT6) { /* Marvell 88x2010 interrupt */
729                         phy = adapter->port[0].phy;
730                         phy_cause = phy->ops->interrupt_handler(phy);
731                         if (phy_cause & cphy_cause_link_change)
732                                 t1_link_changed(adapter, 0);
733                 }
734                 break;
735         case CHBT_BOARD_8000:
736         case CHBT_BOARD_CHT110:
737                 CH_DBG(adapter, INTR, "External interrupt cause 0x%x\n",
738                        cause);
739                 if (cause & ELMER0_GP_BIT1) {        /* PMC3393 INTB */
740                         struct cmac *mac = adapter->port[0].mac;
741
742                         mac->ops->interrupt_handler(mac);
743                 }
744                 if (cause & ELMER0_GP_BIT5) {        /* XPAK MOD_DETECT */
745                         u32 mod_detect;
746
747                         t1_tpi_read(adapter,
748                                         A_ELMER0_GPI_STAT, &mod_detect);
749                         CH_MSG(adapter, INFO, LINK, "XPAK %s\n",
750                                mod_detect ? "removed" : "inserted");
751                 }
752                 break;
753 #ifdef CONFIG_CHELSIO_T1_COUGAR
754         case CHBT_BOARD_COUGAR:
755                 if (adapter->params.nports == 1) {
756                         if (cause & ELMER0_GP_BIT1) {         /* Vitesse MAC */
757                                 struct cmac *mac = adapter->port[0].mac;
758                                 mac->ops->interrupt_handler(mac);
759                         }
760                         if (cause & ELMER0_GP_BIT5) {     /* XPAK MOD_DETECT */
761                         }
762                 } else {
763                         int i, port_bit;
764
765                         for_each_port(adapter, i) {
766                                 port_bit = i ? i + 1 : 0;
767                                 if (!(cause & (1 << port_bit)))
768                                         continue;
769
770                                 phy = adapter->port[i].phy;
771                                 phy_cause = phy->ops->interrupt_handler(phy);
772                                 if (phy_cause & cphy_cause_link_change)
773                                         t1_link_changed(adapter, i);
774                         }
775                 }
776                 break;
777 #endif
778         }
779         t1_tpi_write(adapter, A_ELMER0_INT_CAUSE, cause);
780         return 0;
781 }
782
783 /* Enables all interrupts. */
784 void t1_interrupts_enable(adapter_t *adapter)
785 {
786         unsigned int i;
787
788         adapter->slow_intr_mask = F_PL_INTR_SGE_ERR | F_PL_INTR_TP;
789
790         t1_sge_intr_enable(adapter->sge);
791         t1_tp_intr_enable(adapter->tp);
792         if (adapter->espi) {
793                 adapter->slow_intr_mask |= F_PL_INTR_ESPI;
794                 t1_espi_intr_enable(adapter->espi);
795         }
796
797         /* Enable MAC/PHY interrupts for each port. */
798         for_each_port(adapter, i) {
799                 adapter->port[i].mac->ops->interrupt_enable(adapter->port[i].mac);
800                 adapter->port[i].phy->ops->interrupt_enable(adapter->port[i].phy);
801         }
802
803         /* Enable PCIX & external chip interrupts on ASIC boards. */
804         if (t1_is_asic(adapter)) {
805                 u32 pl_intr = readl(adapter->regs + A_PL_ENABLE);
806
807                 /* PCI-X interrupts */
808                 pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_ENABLE,
809                                        0xffffffff);
810
811                 adapter->slow_intr_mask |= F_PL_INTR_EXT | F_PL_INTR_PCIX;
812                 pl_intr |= F_PL_INTR_EXT | F_PL_INTR_PCIX;
813                 writel(pl_intr, adapter->regs + A_PL_ENABLE);
814         }
815 }
816
817 /* Disables all interrupts. */
818 void t1_interrupts_disable(adapter_t* adapter)
819 {
820         unsigned int i;
821
822         t1_sge_intr_disable(adapter->sge);
823         t1_tp_intr_disable(adapter->tp);
824         if (adapter->espi)
825                 t1_espi_intr_disable(adapter->espi);
826
827         /* Disable MAC/PHY interrupts for each port. */
828         for_each_port(adapter, i) {
829                 adapter->port[i].mac->ops->interrupt_disable(adapter->port[i].mac);
830                 adapter->port[i].phy->ops->interrupt_disable(adapter->port[i].phy);
831         }
832
833         /* Disable PCIX & external chip interrupts. */
834         if (t1_is_asic(adapter))
835                 writel(0, adapter->regs + A_PL_ENABLE);
836
837         /* PCI-X interrupts */
838         pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_ENABLE, 0);
839
840         adapter->slow_intr_mask = 0;
841 }
842
843 /* Clears all interrupts */
844 void t1_interrupts_clear(adapter_t* adapter)
845 {
846         unsigned int i;
847
848         t1_sge_intr_clear(adapter->sge);
849         t1_tp_intr_clear(adapter->tp);
850         if (adapter->espi)
851                 t1_espi_intr_clear(adapter->espi);
852
853         /* Clear MAC/PHY interrupts for each port. */
854         for_each_port(adapter, i) {
855                 adapter->port[i].mac->ops->interrupt_clear(adapter->port[i].mac);
856                 adapter->port[i].phy->ops->interrupt_clear(adapter->port[i].phy);
857         }
858
859         /* Enable interrupts for external devices. */
860         if (t1_is_asic(adapter)) {
861                 u32 pl_intr = readl(adapter->regs + A_PL_CAUSE);
862
863                 writel(pl_intr | F_PL_INTR_EXT | F_PL_INTR_PCIX,
864                        adapter->regs + A_PL_CAUSE);
865         }
866
867         /* PCI-X interrupts */
868         pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_CAUSE, 0xffffffff);
869 }
870
871 /*
872  * Slow path interrupt handler for ASICs.
873  */
874 static int asic_slow_intr(adapter_t *adapter)
875 {
876         u32 cause = readl(adapter->regs + A_PL_CAUSE);
877
878         cause &= adapter->slow_intr_mask;
879         if (!cause)
880                 return 0;
881         if (cause & F_PL_INTR_SGE_ERR)
882                 t1_sge_intr_error_handler(adapter->sge);
883         if (cause & F_PL_INTR_TP)
884                 t1_tp_intr_handler(adapter->tp);
885         if (cause & F_PL_INTR_ESPI)
886                 t1_espi_intr_handler(adapter->espi);
887         if (cause & F_PL_INTR_PCIX)
888                 t1_pci_intr_handler(adapter);
889         if (cause & F_PL_INTR_EXT)
890                 t1_elmer0_ext_intr(adapter);
891
892         /* Clear the interrupts just processed. */
893         writel(cause, adapter->regs + A_PL_CAUSE);
894         readl(adapter->regs + A_PL_CAUSE); /* flush writes */
895         return 1;
896 }
897
898 int t1_slow_intr_handler(adapter_t *adapter)
899 {
900 #ifdef CONFIG_CHELSIO_T1_1G
901         if (!t1_is_asic(adapter))
902                 return fpga_slow_intr(adapter);
903 #endif
904         return asic_slow_intr(adapter);
905 }
906
907 /* Power sequencing is a work-around for Intel's XPAKs. */
908 static void power_sequence_xpak(adapter_t* adapter)
909 {
910         u32 mod_detect;
911         u32 gpo;
912
913         /* Check for XPAK */
914         t1_tpi_read(adapter, A_ELMER0_GPI_STAT, &mod_detect);
915         if (!(ELMER0_GP_BIT5 & mod_detect)) {
916                 /* XPAK is present */
917                 t1_tpi_read(adapter, A_ELMER0_GPO, &gpo);
918                 gpo |= ELMER0_GP_BIT18;
919                 t1_tpi_write(adapter, A_ELMER0_GPO, gpo);
920         }
921 }
922
923 int __devinit t1_get_board_rev(adapter_t *adapter, const struct board_info *bi,
924                                struct adapter_params *p)
925 {
926         p->chip_version = bi->chip_term;
927         p->is_asic = (p->chip_version != CHBT_TERM_FPGA);
928         if (p->chip_version == CHBT_TERM_T1 ||
929             p->chip_version == CHBT_TERM_T2 ||
930             p->chip_version == CHBT_TERM_FPGA) {
931                 u32 val = readl(adapter->regs + A_TP_PC_CONFIG);
932
933                 val = G_TP_PC_REV(val);
934                 if (val == 2)
935                         p->chip_revision = TERM_T1B;
936                 else if (val == 3)
937                         p->chip_revision = TERM_T2;
938                 else
939                         return -1;
940         } else
941                 return -1;
942         return 0;
943 }
944
945 /*
946  * Enable board components other than the Chelsio chip, such as external MAC
947  * and PHY.
948  */
949 static int board_init(adapter_t *adapter, const struct board_info *bi)
950 {
951         switch (bi->board) {
952         case CHBT_BOARD_8000:
953         case CHBT_BOARD_N110:
954         case CHBT_BOARD_N210:
955         case CHBT_BOARD_CHT210:
956         case CHBT_BOARD_COUGAR:
957                 t1_tpi_par(adapter, 0xf);
958                 t1_tpi_write(adapter, A_ELMER0_GPO, 0x800);
959                 break;
960         case CHBT_BOARD_CHT110:
961                 t1_tpi_par(adapter, 0xf);
962                 t1_tpi_write(adapter, A_ELMER0_GPO, 0x1800);
963
964                 /* TBD XXX Might not need.  This fixes a problem
965                  *         described in the Intel SR XPAK errata.
966                  */
967                 power_sequence_xpak(adapter);
968                 break;
969 #ifdef CONFIG_CHELSIO_T1_1G
970         case CHBT_BOARD_CHT204E:
971                 /* add config space write here */
972         case CHBT_BOARD_CHT204:
973         case CHBT_BOARD_CHT204V:
974         case CHBT_BOARD_CHN204:
975                 t1_tpi_par(adapter, 0xf);
976                 t1_tpi_write(adapter, A_ELMER0_GPO, 0x804);
977                 break;
978         case CHBT_BOARD_CHT101:
979         case CHBT_BOARD_7500:
980                 t1_tpi_par(adapter, 0xf);
981                 t1_tpi_write(adapter, A_ELMER0_GPO, 0x1804);
982                 break;
983 #endif
984         }
985         return 0;
986 }
987
988 /*
989  * Initialize and configure the Terminator HW modules.  Note that external
990  * MAC and PHYs are initialized separately.
991  */
992 int t1_init_hw_modules(adapter_t *adapter)
993 {
994         int err = -EIO;
995         const struct board_info *bi = board_info(adapter);
996
997         if (!bi->clock_mc4) {
998                 u32 val = readl(adapter->regs + A_MC4_CFG);
999
1000                 writel(val | F_READY | F_MC4_SLOW, adapter->regs + A_MC4_CFG);
1001                 writel(F_M_BUS_ENABLE | F_TCAM_RESET,
1002                        adapter->regs + A_MC5_CONFIG);
1003         }
1004
1005 #ifdef CONFIG_CHELSIO_T1_COUGAR
1006         if (adapter->cspi && t1_cspi_init(adapter->cspi))
1007                 goto out_err;
1008 #endif
1009         if (adapter->espi && t1_espi_init(adapter->espi, bi->chip_mac,
1010                                           bi->espi_nports))
1011                 goto out_err;
1012
1013         if (t1_tp_reset(adapter->tp, &adapter->params.tp, bi->clock_core))
1014                 goto out_err;
1015
1016         err = t1_sge_configure(adapter->sge, &adapter->params.sge);
1017         if (err)
1018                 goto out_err;
1019
1020         err = 0;
1021 out_err:
1022         return err;
1023 }
1024
1025 /*
1026  * Determine a card's PCI mode.
1027  */
1028 static void __devinit get_pci_mode(adapter_t *adapter, struct chelsio_pci_params *p)
1029 {
1030         static const unsigned short speed_map[] = { 33, 66, 100, 133 };
1031         u32 pci_mode;
1032
1033         pci_read_config_dword(adapter->pdev, A_PCICFG_MODE, &pci_mode);
1034         p->speed = speed_map[G_PCI_MODE_CLK(pci_mode)];
1035         p->width = (pci_mode & F_PCI_MODE_64BIT) ? 64 : 32;
1036         p->is_pcix = (pci_mode & F_PCI_MODE_PCIX) != 0;
1037 }
1038
1039 /*
1040  * Release the structures holding the SW per-Terminator-HW-module state.
1041  */
1042 void t1_free_sw_modules(adapter_t *adapter)
1043 {
1044         unsigned int i;
1045
1046         for_each_port(adapter, i) {
1047                 struct cmac *mac = adapter->port[i].mac;
1048                 struct cphy *phy = adapter->port[i].phy;
1049
1050                 if (mac)
1051                         mac->ops->destroy(mac);
1052                 if (phy)
1053                         phy->ops->destroy(phy);
1054         }
1055
1056         if (adapter->sge)
1057                 t1_sge_destroy(adapter->sge);
1058         if (adapter->tp)
1059                 t1_tp_destroy(adapter->tp);
1060         if (adapter->espi)
1061                 t1_espi_destroy(adapter->espi);
1062 #ifdef CONFIG_CHELSIO_T1_COUGAR
1063         if (adapter->cspi)
1064                 t1_cspi_destroy(adapter->cspi);
1065 #endif
1066 }
1067
1068 static void __devinit init_link_config(struct link_config *lc,
1069                                        const struct board_info *bi)
1070 {
1071         lc->supported = bi->caps;
1072         lc->requested_speed = lc->speed = SPEED_INVALID;
1073         lc->requested_duplex = lc->duplex = DUPLEX_INVALID;
1074         lc->requested_fc = lc->fc = PAUSE_RX | PAUSE_TX;
1075         if (lc->supported & SUPPORTED_Autoneg) {
1076                 lc->advertising = lc->supported;
1077                 lc->autoneg = AUTONEG_ENABLE;
1078                 lc->requested_fc |= PAUSE_AUTONEG;
1079         } else {
1080                 lc->advertising = 0;
1081                 lc->autoneg = AUTONEG_DISABLE;
1082         }
1083 }
1084
1085 #ifdef CONFIG_CHELSIO_T1_COUGAR
1086         if (bi->clock_cspi && !(adapter->cspi = t1_cspi_create(adapter))) {
1087                 CH_ERR("%s: CSPI initialization failed\n",
1088                        adapter->name);
1089                 goto error;
1090         }
1091 #endif
1092
1093 /*
1094  * Allocate and initialize the data structures that hold the SW state of
1095  * the Terminator HW modules.
1096  */
1097 int __devinit t1_init_sw_modules(adapter_t *adapter,
1098                                  const struct board_info *bi)
1099 {
1100         unsigned int i;
1101
1102         adapter->params.brd_info = bi;
1103         adapter->params.nports = bi->port_number;
1104         adapter->params.stats_update_period = bi->gmac->stats_update_period;
1105
1106         adapter->sge = t1_sge_create(adapter, &adapter->params.sge);
1107         if (!adapter->sge) {
1108                 CH_ERR("%s: SGE initialization failed\n",
1109                        adapter->name);
1110                 goto error;
1111         }
1112
1113         if (bi->espi_nports && !(adapter->espi = t1_espi_create(adapter))) {
1114                 CH_ERR("%s: ESPI initialization failed\n",
1115                        adapter->name);
1116                 goto error;
1117         }
1118
1119         adapter->tp = t1_tp_create(adapter, &adapter->params.tp);
1120         if (!adapter->tp) {
1121                 CH_ERR("%s: TP initialization failed\n",
1122                        adapter->name);
1123                 goto error;
1124         }
1125
1126         board_init(adapter, bi);
1127         bi->mdio_ops->init(adapter, bi);
1128         if (bi->gphy->reset)
1129                 bi->gphy->reset(adapter);
1130         if (bi->gmac->reset)
1131                 bi->gmac->reset(adapter);
1132
1133         for_each_port(adapter, i) {
1134                 u8 hw_addr[6];
1135                 struct cmac *mac;
1136                 int phy_addr = bi->mdio_phybaseaddr + i;
1137
1138                 adapter->port[i].phy = bi->gphy->create(adapter->port[i].dev,
1139                                                         phy_addr, bi->mdio_ops);
1140                 if (!adapter->port[i].phy) {
1141                         CH_ERR("%s: PHY %d initialization failed\n",
1142                                adapter->name, i);
1143                         goto error;
1144                 }
1145
1146                 adapter->port[i].mac = mac = bi->gmac->create(adapter, i);
1147                 if (!mac) {
1148                         CH_ERR("%s: MAC %d initialization failed\n",
1149                                adapter->name, i);
1150                         goto error;
1151                 }
1152
1153                 /*
1154                  * Get the port's MAC addresses either from the EEPROM if one
1155                  * exists or the one hardcoded in the MAC.
1156                  */
1157                 if (!t1_is_asic(adapter) || bi->chip_mac == CHBT_MAC_DUMMY)
1158                         mac->ops->macaddress_get(mac, hw_addr);
1159                 else if (vpd_macaddress_get(adapter, i, hw_addr)) {
1160                         CH_ERR("%s: could not read MAC address from VPD ROM\n",
1161                                adapter->port[i].dev->name);
1162                         goto error;
1163                 }
1164                 memcpy(adapter->port[i].dev->dev_addr, hw_addr, ETH_ALEN);
1165                 init_link_config(&adapter->port[i].link_config, bi);
1166         }
1167
1168         get_pci_mode(adapter, &adapter->params.pci);
1169         t1_interrupts_clear(adapter);
1170         return 0;
1171
1172 error:
1173         t1_free_sw_modules(adapter);
1174         return -1;
1175 }