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Linux 2.6.20.7
[linux/fpc-iii.git] / drivers / net / chelsio / subr.c
blob22ed9a383c0814cef941b5e0402e7e08a287e52c
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",
266 adapter->name);
267 return busy;
268 }
269
270 /*
271 * MI1 MDIO initialization.
272 */
273 static void mi1_mdio_init(adapter_t *adapter, const struct board_info *bi)
274 {
275 u32 clkdiv = bi->clock_elmer0 / (2 * bi->mdio_mdc) - 1;
276 u32 val = F_MI1_PREAMBLE_ENABLE | V_MI1_MDI_INVERT(bi->mdio_mdiinv) |
277 V_MI1_MDI_ENABLE(bi->mdio_mdien) | V_MI1_CLK_DIV(clkdiv);
278
279 if (!(bi->caps & SUPPORTED_10000baseT_Full))
280 val |= V_MI1_SOF(1);
281 t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_CFG, val);
282 }
283
284 #if defined(CONFIG_CHELSIO_T1_1G) || defined(CONFIG_CHELSIO_T1_COUGAR)
285 /*
286 * Elmer MI1 MDIO read/write operations.
287 */
288 static int mi1_mdio_read(adapter_t *adapter, int phy_addr, int mmd_addr,
289 int reg_addr, unsigned int *valp)
290 {
291 u32 addr = V_MI1_REG_ADDR(reg_addr) | V_MI1_PHY_ADDR(phy_addr);
292
293 if (mmd_addr)
294 return -EINVAL;
295
296 spin_lock(&adapter->tpi_lock);
297 __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);
298 __t1_tpi_write(adapter,
299 A_ELMER0_PORT0_MI1_OP, MI1_OP_DIRECT_READ);
300 mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
301 __t1_tpi_read(adapter, A_ELMER0_PORT0_MI1_DATA, valp);
302 spin_unlock(&adapter->tpi_lock);
303 return 0;
304 }
305
306 static int mi1_mdio_write(adapter_t *adapter, int phy_addr, int mmd_addr,
307 int reg_addr, unsigned int val)
308 {
309 u32 addr = V_MI1_REG_ADDR(reg_addr) | V_MI1_PHY_ADDR(phy_addr);
310
311 if (mmd_addr)
312 return -EINVAL;
313
314 spin_lock(&adapter->tpi_lock);
315 __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);
316 __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, val);
317 __t1_tpi_write(adapter,
318 A_ELMER0_PORT0_MI1_OP, MI1_OP_DIRECT_WRITE);
319 mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
320 spin_unlock(&adapter->tpi_lock);
321 return 0;
322 }
323
324 #if defined(CONFIG_CHELSIO_T1_1G) || defined(CONFIG_CHELSIO_T1_COUGAR)
325 static struct mdio_ops mi1_mdio_ops = {
326 mi1_mdio_init,
327 mi1_mdio_read,
328 mi1_mdio_write
329 };
330 #endif
331
332 #endif
333
334 static int mi1_mdio_ext_read(adapter_t *adapter, int phy_addr, int mmd_addr,
335 int reg_addr, unsigned int *valp)
336 {
337 u32 addr = V_MI1_REG_ADDR(mmd_addr) | V_MI1_PHY_ADDR(phy_addr);
338
339 spin_lock(&adapter->tpi_lock);
340
341 /* Write the address we want. */
342 __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);
343 __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, reg_addr);
344 __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_OP,
345 MI1_OP_INDIRECT_ADDRESS);
346 mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
347
348 /* Write the operation we want. */
349 __t1_tpi_write(adapter,
350 A_ELMER0_PORT0_MI1_OP, MI1_OP_INDIRECT_READ);
351 mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
352
353 /* Read the data. */
354 __t1_tpi_read(adapter, A_ELMER0_PORT0_MI1_DATA, valp);
355 spin_unlock(&adapter->tpi_lock);
356 return 0;
357 }
358
359 static int mi1_mdio_ext_write(adapter_t *adapter, int phy_addr, int mmd_addr,
360 int reg_addr, unsigned int val)
361 {
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 struct mdio_ops mi1_mdio_ext_ops = {
382 mi1_mdio_init,
383 mi1_mdio_ext_read,
384 mi1_mdio_ext_write
385 };
386
387 enum {
388 CH_BRD_T110_1CU,
389 CH_BRD_N110_1F,
390 CH_BRD_N210_1F,
391 CH_BRD_T210_1F,
392 CH_BRD_T210_1CU,
393 CH_BRD_N204_4CU,
394 };
395
396 static struct board_info t1_board[] = {
397
398 { CHBT_BOARD_CHT110, 1/*ports#*/,
399 SUPPORTED_10000baseT_Full /*caps*/, CHBT_TERM_T1,
400 CHBT_MAC_PM3393, CHBT_PHY_MY3126,
401 125000000/*clk-core*/, 150000000/*clk-mc3*/, 125000000/*clk-mc4*/,
402 1/*espi-ports*/, 0/*clk-cspi*/, 44/*clk-elmer0*/, 1/*mdien*/,
403 1/*mdiinv*/, 1/*mdc*/, 1/*phybaseaddr*/, &t1_pm3393_ops,
404 &t1_my3126_ops, &mi1_mdio_ext_ops,
405 "Chelsio T110 1x10GBase-CX4 TOE" },
406
407 { CHBT_BOARD_N110, 1/*ports#*/,
408 SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE /*caps*/, CHBT_TERM_T1,
409 CHBT_MAC_PM3393, CHBT_PHY_88X2010,
410 125000000/*clk-core*/, 0/*clk-mc3*/, 0/*clk-mc4*/,
411 1/*espi-ports*/, 0/*clk-cspi*/, 44/*clk-elmer0*/, 0/*mdien*/,
412 0/*mdiinv*/, 1/*mdc*/, 0/*phybaseaddr*/, &t1_pm3393_ops,
413 &t1_mv88x201x_ops, &mi1_mdio_ext_ops,
414 "Chelsio N110 1x10GBaseX NIC" },
415
416 { CHBT_BOARD_N210, 1/*ports#*/,
417 SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE /*caps*/, CHBT_TERM_T2,
418 CHBT_MAC_PM3393, CHBT_PHY_88X2010,
419 125000000/*clk-core*/, 0/*clk-mc3*/, 0/*clk-mc4*/,
420 1/*espi-ports*/, 0/*clk-cspi*/, 44/*clk-elmer0*/, 0/*mdien*/,
421 0/*mdiinv*/, 1/*mdc*/, 0/*phybaseaddr*/, &t1_pm3393_ops,
422 &t1_mv88x201x_ops, &mi1_mdio_ext_ops,
423 "Chelsio N210 1x10GBaseX NIC" },
424
425 { CHBT_BOARD_CHT210, 1/*ports#*/,
426 SUPPORTED_10000baseT_Full /*caps*/, CHBT_TERM_T2,
427 CHBT_MAC_PM3393, CHBT_PHY_88X2010,
428 125000000/*clk-core*/, 133000000/*clk-mc3*/, 125000000/*clk-mc4*/,
429 1/*espi-ports*/, 0/*clk-cspi*/, 44/*clk-elmer0*/, 0/*mdien*/,
430 0/*mdiinv*/, 1/*mdc*/, 0/*phybaseaddr*/, &t1_pm3393_ops,
431 &t1_mv88x201x_ops, &mi1_mdio_ext_ops,
432 "Chelsio T210 1x10GBaseX TOE" },
433
434 { CHBT_BOARD_CHT210, 1/*ports#*/,
435 SUPPORTED_10000baseT_Full /*caps*/, CHBT_TERM_T2,
436 CHBT_MAC_PM3393, CHBT_PHY_MY3126,
437 125000000/*clk-core*/, 133000000/*clk-mc3*/, 125000000/*clk-mc4*/,
438 1/*espi-ports*/, 0/*clk-cspi*/, 44/*clk-elmer0*/, 1/*mdien*/,
439 1/*mdiinv*/, 1/*mdc*/, 1/*phybaseaddr*/, &t1_pm3393_ops,
440 &t1_my3126_ops, &mi1_mdio_ext_ops,
441 "Chelsio T210 1x10GBase-CX4 TOE" },
442
443 #ifdef CONFIG_CHELSIO_T1_1G
444 { CHBT_BOARD_CHN204, 4/*ports#*/,
445 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Half |
446 SUPPORTED_100baseT_Full | SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg |
447 SUPPORTED_PAUSE | SUPPORTED_TP /*caps*/, CHBT_TERM_T2, CHBT_MAC_VSC7321, CHBT_PHY_88E1111,
448 100000000/*clk-core*/, 0/*clk-mc3*/, 0/*clk-mc4*/,
449 4/*espi-ports*/, 0/*clk-cspi*/, 44/*clk-elmer0*/, 0/*mdien*/,
450 0/*mdiinv*/, 1/*mdc*/, 4/*phybaseaddr*/, &t1_vsc7326_ops,
451 &t1_mv88e1xxx_ops, &mi1_mdio_ops,
452 "Chelsio N204 4x100/1000BaseT NIC" },
453 #endif
454
455 };
456
457 struct pci_device_id t1_pci_tbl[] = {
458 CH_DEVICE(8, 0, CH_BRD_T110_1CU),
459 CH_DEVICE(8, 1, CH_BRD_T110_1CU),
460 CH_DEVICE(7, 0, CH_BRD_N110_1F),
461 CH_DEVICE(10, 1, CH_BRD_N210_1F),
462 CH_DEVICE(11, 1, CH_BRD_T210_1F),
463 CH_DEVICE(14, 1, CH_BRD_T210_1CU),
464 CH_DEVICE(16, 1, CH_BRD_N204_4CU),
465 { 0 }
466 };
467
468 MODULE_DEVICE_TABLE(pci, t1_pci_tbl);
469
470 /*
471 * Return the board_info structure with a given index. Out-of-range indices
472 * return NULL.
473 */
474 const struct board_info *t1_get_board_info(unsigned int board_id)
475 {
476 return board_id < ARRAY_SIZE(t1_board) ? &t1_board[board_id] : NULL;
477 }
478
479 struct chelsio_vpd_t {
480 u32 format_version;
481 u8 serial_number[16];
482 u8 mac_base_address[6];
483 u8 pad[2]; /* make multiple-of-4 size requirement explicit */
484 };
485
486 #define EEPROMSIZE (8 * 1024)
487 #define EEPROM_MAX_POLL 4
488
489 /*
490 * Read SEEPROM. A zero is written to the flag register when the addres is
491 * written to the Control register. The hardware device will set the flag to a
492 * one when 4B have been transferred to the Data register.
493 */
494 int t1_seeprom_read(adapter_t *adapter, u32 addr, u32 *data)
495 {
496 int i = EEPROM_MAX_POLL;
497 u16 val;
498
499 if (addr >= EEPROMSIZE || (addr & 3))
500 return -EINVAL;
501
502 pci_write_config_word(adapter->pdev, A_PCICFG_VPD_ADDR, (u16)addr);
503 do {
504 udelay(50);
505 pci_read_config_word(adapter->pdev, A_PCICFG_VPD_ADDR, &val);
506 } while (!(val & F_VPD_OP_FLAG) && --i);
507
508 if (!(val & F_VPD_OP_FLAG)) {
509 CH_ERR("%s: reading EEPROM address 0x%x failed\n",
510 adapter->name, addr);
511 return -EIO;
512 }
513 pci_read_config_dword(adapter->pdev, A_PCICFG_VPD_DATA, data);
514 *data = le32_to_cpu(*data);
515 return 0;
516 }
517
518 static int t1_eeprom_vpd_get(adapter_t *adapter, struct chelsio_vpd_t *vpd)
519 {
520 int addr, ret = 0;
521
522 for (addr = 0; !ret && addr < sizeof(*vpd); addr += sizeof(u32))
523 ret = t1_seeprom_read(adapter, addr,
524 (u32 *)((u8 *)vpd + addr));
525
526 return ret;
527 }
528
529 /*
530 * Read a port's MAC address from the VPD ROM.
531 */
532 static int vpd_macaddress_get(adapter_t *adapter, int index, u8 mac_addr[])
533 {
534 struct chelsio_vpd_t vpd;
535
536 if (t1_eeprom_vpd_get(adapter, &vpd))
537 return 1;
538 memcpy(mac_addr, vpd.mac_base_address, 5);
539 mac_addr[5] = vpd.mac_base_address[5] + index;
540 return 0;
541 }
542
543 /*
544 * Set up the MAC/PHY according to the requested link settings.
545 *
546 * If the PHY can auto-negotiate first decide what to advertise, then
547 * enable/disable auto-negotiation as desired and reset.
548 *
549 * If the PHY does not auto-negotiate we just reset it.
550 *
551 * If auto-negotiation is off set the MAC to the proper speed/duplex/FC,
552 * otherwise do it later based on the outcome of auto-negotiation.
553 */
554 int t1_link_start(struct cphy *phy, struct cmac *mac, struct link_config *lc)
555 {
556 unsigned int fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);
557
558 if (lc->supported & SUPPORTED_Autoneg) {
559 lc->advertising &= ~(ADVERTISED_ASYM_PAUSE | ADVERTISED_PAUSE);
560 if (fc) {
561 if (fc == ((PAUSE_RX | PAUSE_TX) &
562 (mac->adapter->params.nports < 2)))
563 lc->advertising |= ADVERTISED_PAUSE;
564 else {
565 lc->advertising |= ADVERTISED_ASYM_PAUSE;
566 if (fc == PAUSE_RX)
567 lc->advertising |= ADVERTISED_PAUSE;
568 }
569 }
570 phy->ops->advertise(phy, lc->advertising);
571
572 if (lc->autoneg == AUTONEG_DISABLE) {
573 lc->speed = lc->requested_speed;
574 lc->duplex = lc->requested_duplex;
575 lc->fc = (unsigned char)fc;
576 mac->ops->set_speed_duplex_fc(mac, lc->speed,
577 lc->duplex, fc);
578 /* Also disables autoneg */
579 phy->state = PHY_AUTONEG_RDY;
580 phy->ops->set_speed_duplex(phy, lc->speed, lc->duplex);
581 phy->ops->reset(phy, 0);
582 } else {
583 phy->state = PHY_AUTONEG_EN;
584 phy->ops->autoneg_enable(phy); /* also resets PHY */
585 }
586 } else {
587 phy->state = PHY_AUTONEG_RDY;
588 mac->ops->set_speed_duplex_fc(mac, -1, -1, fc);
589 lc->fc = (unsigned char)fc;
590 phy->ops->reset(phy, 0);
591 }
592 return 0;
593 }
594
595 /*
596 * External interrupt handler for boards using elmer0.
597 */
598 int t1_elmer0_ext_intr_handler(adapter_t *adapter)
599 {
600 struct cphy *phy;
601 int phy_cause;
602 u32 cause;
603
604 t1_tpi_read(adapter, A_ELMER0_INT_CAUSE, &cause);
605
606 switch (board_info(adapter)->board) {
607 #ifdef CONFIG_CHELSIO_T1_1G
608 case CHBT_BOARD_CHT204:
609 case CHBT_BOARD_CHT204E:
610 case CHBT_BOARD_CHN204:
611 case CHBT_BOARD_CHT204V: {
612 int i, port_bit;
613 for_each_port(adapter, i) {
614 port_bit = i + 1;
615 if (!(cause & (1 << port_bit))) continue;
616
617 phy = adapter->port[i].phy;
618 phy_cause = phy->ops->interrupt_handler(phy);
619 if (phy_cause & cphy_cause_link_change)
620 t1_link_changed(adapter, i);
621 }
622 break;
623 }
624 case CHBT_BOARD_CHT101:
625 if (cause & ELMER0_GP_BIT1) { /* Marvell 88E1111 interrupt */
626 phy = adapter->port[0].phy;
627 phy_cause = phy->ops->interrupt_handler(phy);
628 if (phy_cause & cphy_cause_link_change)
629 t1_link_changed(adapter, 0);
630 }
631 break;
632 case CHBT_BOARD_7500: {
633 int p;
634 /*
635 * Elmer0's interrupt cause isn't useful here because there is
636 * only one bit that can be set for all 4 ports. This means
637 * we are forced to check every PHY's interrupt status
638 * register to see who initiated the interrupt.
639 */
640 for_each_port(adapter, p) {
641 phy = adapter->port[p].phy;
642 phy_cause = phy->ops->interrupt_handler(phy);
643 if (phy_cause & cphy_cause_link_change)
644 t1_link_changed(adapter, p);
645 }
646 break;
647 }
648 #endif
649 case CHBT_BOARD_CHT210:
650 case CHBT_BOARD_N210:
651 case CHBT_BOARD_N110:
652 if (cause & ELMER0_GP_BIT6) { /* Marvell 88x2010 interrupt */
653 phy = adapter->port[0].phy;
654 phy_cause = phy->ops->interrupt_handler(phy);
655 if (phy_cause & cphy_cause_link_change)
656 t1_link_changed(adapter, 0);
657 }
658 break;
659 case CHBT_BOARD_8000:
660 case CHBT_BOARD_CHT110:
661 CH_DBG(adapter, INTR, "External interrupt cause 0x%x\n",
662 cause);
663 if (cause & ELMER0_GP_BIT1) { /* PMC3393 INTB */
664 struct cmac *mac = adapter->port[0].mac;
665
666 mac->ops->interrupt_handler(mac);
667 }
668 if (cause & ELMER0_GP_BIT5) { /* XPAK MOD_DETECT */
669 u32 mod_detect;
670
671 t1_tpi_read(adapter,
672 A_ELMER0_GPI_STAT, &mod_detect);
673 CH_MSG(adapter, INFO, LINK, "XPAK %s\n",
674 mod_detect ? "removed" : "inserted");
675 }
676 break;
677 #ifdef CONFIG_CHELSIO_T1_COUGAR
678 case CHBT_BOARD_COUGAR:
679 if (adapter->params.nports == 1) {
680 if (cause & ELMER0_GP_BIT1) { /* Vitesse MAC */
681 struct cmac *mac = adapter->port[0].mac;
682 mac->ops->interrupt_handler(mac);
683 }
684 if (cause & ELMER0_GP_BIT5) { /* XPAK MOD_DETECT */
685 }
686 } else {
687 int i, port_bit;
688
689 for_each_port(adapter, i) {
690 port_bit = i ? i + 1 : 0;
691 if (!(cause & (1 << port_bit))) 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 }
699 break;
700 #endif
701 }
702 t1_tpi_write(adapter, A_ELMER0_INT_CAUSE, cause);
703 return 0;
704 }
705
706 /* Enables all interrupts. */
707 void t1_interrupts_enable(adapter_t *adapter)
708 {
709 unsigned int i;
710
711 adapter->slow_intr_mask = F_PL_INTR_SGE_ERR | F_PL_INTR_TP;
712
713 t1_sge_intr_enable(adapter->sge);
714 t1_tp_intr_enable(adapter->tp);
715 if (adapter->espi) {
716 adapter->slow_intr_mask |= F_PL_INTR_ESPI;
717 t1_espi_intr_enable(adapter->espi);
718 }
719
720 /* Enable MAC/PHY interrupts for each port. */
721 for_each_port(adapter, i) {
722 adapter->port[i].mac->ops->interrupt_enable(adapter->port[i].mac);
723 adapter->port[i].phy->ops->interrupt_enable(adapter->port[i].phy);
724 }
725
726 /* Enable PCIX & external chip interrupts on ASIC boards. */
727 if (t1_is_asic(adapter)) {
728 u32 pl_intr = readl(adapter->regs + A_PL_ENABLE);
729
730 /* PCI-X interrupts */
731 pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_ENABLE,
732 0xffffffff);
733
734 adapter->slow_intr_mask |= F_PL_INTR_EXT | F_PL_INTR_PCIX;
735 pl_intr |= F_PL_INTR_EXT | F_PL_INTR_PCIX;
736 writel(pl_intr, adapter->regs + A_PL_ENABLE);
737 }
738 }
739
740 /* Disables all interrupts. */
741 void t1_interrupts_disable(adapter_t* adapter)
742 {
743 unsigned int i;
744
745 t1_sge_intr_disable(adapter->sge);
746 t1_tp_intr_disable(adapter->tp);
747 if (adapter->espi)
748 t1_espi_intr_disable(adapter->espi);
749
750 /* Disable MAC/PHY interrupts for each port. */
751 for_each_port(adapter, i) {
752 adapter->port[i].mac->ops->interrupt_disable(adapter->port[i].mac);
753 adapter->port[i].phy->ops->interrupt_disable(adapter->port[i].phy);
754 }
755
756 /* Disable PCIX & external chip interrupts. */
757 if (t1_is_asic(adapter))
758 writel(0, adapter->regs + A_PL_ENABLE);
759
760 /* PCI-X interrupts */
761 pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_ENABLE, 0);
762
763 adapter->slow_intr_mask = 0;
764 }
765
766 /* Clears all interrupts */
767 void t1_interrupts_clear(adapter_t* adapter)
768 {
769 unsigned int i;
770
771 t1_sge_intr_clear(adapter->sge);
772 t1_tp_intr_clear(adapter->tp);
773 if (adapter->espi)
774 t1_espi_intr_clear(adapter->espi);
775
776 /* Clear MAC/PHY interrupts for each port. */
777 for_each_port(adapter, i) {
778 adapter->port[i].mac->ops->interrupt_clear(adapter->port[i].mac);
779 adapter->port[i].phy->ops->interrupt_clear(adapter->port[i].phy);
780 }
781
782 /* Enable interrupts for external devices. */
783 if (t1_is_asic(adapter)) {
784 u32 pl_intr = readl(adapter->regs + A_PL_CAUSE);
785
786 writel(pl_intr | F_PL_INTR_EXT | F_PL_INTR_PCIX,
787 adapter->regs + A_PL_CAUSE);
788 }
789
790 /* PCI-X interrupts */
791 pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_CAUSE, 0xffffffff);
792 }
793
794 /*
795 * Slow path interrupt handler for ASICs.
796 */
797 static int asic_slow_intr(adapter_t *adapter)
798 {
799 u32 cause = readl(adapter->regs + A_PL_CAUSE);
800
801 cause &= adapter->slow_intr_mask;
802 if (!cause)
803 return 0;
804 if (cause & F_PL_INTR_SGE_ERR)
805 t1_sge_intr_error_handler(adapter->sge);
806 if (cause & F_PL_INTR_TP)
807 t1_tp_intr_handler(adapter->tp);
808 if (cause & F_PL_INTR_ESPI)
809 t1_espi_intr_handler(adapter->espi);
810 if (cause & F_PL_INTR_PCIX)
811 t1_pci_intr_handler(adapter);
812 if (cause & F_PL_INTR_EXT)
813 t1_elmer0_ext_intr_handler(adapter);
814
815 /* Clear the interrupts just processed. */
816 writel(cause, adapter->regs + A_PL_CAUSE);
817 readl(adapter->regs + A_PL_CAUSE); /* flush writes */
818 return 1;
819 }
820
821 int t1_slow_intr_handler(adapter_t *adapter)
822 {
823 #ifdef CONFIG_CHELSIO_T1_1G
824 if (!t1_is_asic(adapter))
825 return fpga_slow_intr(adapter);
826 #endif
827 return asic_slow_intr(adapter);
828 }
829
830 /* Power sequencing is a work-around for Intel's XPAKs. */
831 static void power_sequence_xpak(adapter_t* adapter)
832 {
833 u32 mod_detect;
834 u32 gpo;
835
836 /* Check for XPAK */
837 t1_tpi_read(adapter, A_ELMER0_GPI_STAT, &mod_detect);
838 if (!(ELMER0_GP_BIT5 & mod_detect)) {
839 /* XPAK is present */
840 t1_tpi_read(adapter, A_ELMER0_GPO, &gpo);
841 gpo |= ELMER0_GP_BIT18;
842 t1_tpi_write(adapter, A_ELMER0_GPO, gpo);
843 }
844 }
845
846 int __devinit t1_get_board_rev(adapter_t *adapter, const struct board_info *bi,
847 struct adapter_params *p)
848 {
849 p->chip_version = bi->chip_term;
850 p->is_asic = (p->chip_version != CHBT_TERM_FPGA);
851 if (p->chip_version == CHBT_TERM_T1 ||
852 p->chip_version == CHBT_TERM_T2 ||
853 p->chip_version == CHBT_TERM_FPGA) {
854 u32 val = readl(adapter->regs + A_TP_PC_CONFIG);
855
856 val = G_TP_PC_REV(val);
857 if (val == 2)
858 p->chip_revision = TERM_T1B;
859 else if (val == 3)
860 p->chip_revision = TERM_T2;
861 else
862 return -1;
863 } else
864 return -1;
865 return 0;
866 }
867
868 /*
869 * Enable board components other than the Chelsio chip, such as external MAC
870 * and PHY.
871 */
872 static int board_init(adapter_t *adapter, const struct board_info *bi)
873 {
874 switch (bi->board) {
875 case CHBT_BOARD_8000:
876 case CHBT_BOARD_N110:
877 case CHBT_BOARD_N210:
878 case CHBT_BOARD_CHT210:
879 case CHBT_BOARD_COUGAR:
880 t1_tpi_par(adapter, 0xf);
881 t1_tpi_write(adapter, A_ELMER0_GPO, 0x800);
882 break;
883 case CHBT_BOARD_CHT110:
884 t1_tpi_par(adapter, 0xf);
885 t1_tpi_write(adapter, A_ELMER0_GPO, 0x1800);
886
887 /* TBD XXX Might not need. This fixes a problem
888 * described in the Intel SR XPAK errata.
889 */
890 power_sequence_xpak(adapter);
891 break;
892 #ifdef CONFIG_CHELSIO_T1_1G
893 case CHBT_BOARD_CHT204E:
894 /* add config space write here */
895 case CHBT_BOARD_CHT204:
896 case CHBT_BOARD_CHT204V:
897 case CHBT_BOARD_CHN204:
898 t1_tpi_par(adapter, 0xf);
899 t1_tpi_write(adapter, A_ELMER0_GPO, 0x804);
900 break;
901 case CHBT_BOARD_CHT101:
902 case CHBT_BOARD_7500:
903 t1_tpi_par(adapter, 0xf);
904 t1_tpi_write(adapter, A_ELMER0_GPO, 0x1804);
905 break;
906 #endif
907 }
908 return 0;
909 }
910
911 /*
912 * Initialize and configure the Terminator HW modules. Note that external
913 * MAC and PHYs are initialized separately.
914 */
915 int t1_init_hw_modules(adapter_t *adapter)
916 {
917 int err = -EIO;
918 const struct board_info *bi = board_info(adapter);
919
920 if (!bi->clock_mc4) {
921 u32 val = readl(adapter->regs + A_MC4_CFG);
922
923 writel(val | F_READY | F_MC4_SLOW, adapter->regs + A_MC4_CFG);
924 writel(F_M_BUS_ENABLE | F_TCAM_RESET,
925 adapter->regs + A_MC5_CONFIG);
926 }
927
928 #ifdef CONFIG_CHELSIO_T1_COUGAR
929 if (adapter->cspi && t1_cspi_init(adapter->cspi))
930 goto out_err;
931 #endif
932 if (adapter->espi && t1_espi_init(adapter->espi, bi->chip_mac,
933 bi->espi_nports))
934 goto out_err;
935
936 if (t1_tp_reset(adapter->tp, &adapter->params.tp, bi->clock_core))
937 goto out_err;
938
939 err = t1_sge_configure(adapter->sge, &adapter->params.sge);
940 if (err)
941 goto out_err;
942
943 err = 0;
944 out_err:
945 return err;
946 }
947
948 /*
949 * Determine a card's PCI mode.
950 */
951 static void __devinit get_pci_mode(adapter_t *adapter, struct chelsio_pci_params *p)
952 {
953 static const unsigned short speed_map[] = { 33, 66, 100, 133 };
954 u32 pci_mode;
955
956 pci_read_config_dword(adapter->pdev, A_PCICFG_MODE, &pci_mode);
957 p->speed = speed_map[G_PCI_MODE_CLK(pci_mode)];
958 p->width = (pci_mode & F_PCI_MODE_64BIT) ? 64 : 32;
959 p->is_pcix = (pci_mode & F_PCI_MODE_PCIX) != 0;
960 }
961
962 /*
963 * Release the structures holding the SW per-Terminator-HW-module state.
964 */
965 void t1_free_sw_modules(adapter_t *adapter)
966 {
967 unsigned int i;
968
969 for_each_port(adapter, i) {
970 struct cmac *mac = adapter->port[i].mac;
971 struct cphy *phy = adapter->port[i].phy;
972
973 if (mac)
974 mac->ops->destroy(mac);
975 if (phy)
976 phy->ops->destroy(phy);
977 }
978
979 if (adapter->sge)
980 t1_sge_destroy(adapter->sge);
981 if (adapter->tp)
982 t1_tp_destroy(adapter->tp);
983 if (adapter->espi)
984 t1_espi_destroy(adapter->espi);
985 #ifdef CONFIG_CHELSIO_T1_COUGAR
986 if (adapter->cspi)
987 t1_cspi_destroy(adapter->cspi);
988 #endif
989 }
990
991 static void __devinit init_link_config(struct link_config *lc,
992 const struct board_info *bi)
993 {
994 lc->supported = bi->caps;
995 lc->requested_speed = lc->speed = SPEED_INVALID;
996 lc->requested_duplex = lc->duplex = DUPLEX_INVALID;
997 lc->requested_fc = lc->fc = PAUSE_RX | PAUSE_TX;
998 if (lc->supported & SUPPORTED_Autoneg) {
999 lc->advertising = lc->supported;
1000 lc->autoneg = AUTONEG_ENABLE;
1001 lc->requested_fc |= PAUSE_AUTONEG;
1002 } else {
1003 lc->advertising = 0;
1004 lc->autoneg = AUTONEG_DISABLE;
1005 }
1006 }
1007
1008 #ifdef CONFIG_CHELSIO_T1_COUGAR
1009 if (bi->clock_cspi && !(adapter->cspi = t1_cspi_create(adapter))) {
1010 CH_ERR("%s: CSPI initialization failed\n",
1011 adapter->name);
1012 goto error;
1013 }
1014 #endif
1015
1016 /*
1017 * Allocate and initialize the data structures that hold the SW state of
1018 * the Terminator HW modules.
1019 */
1020 int __devinit t1_init_sw_modules(adapter_t *adapter,
1021 const struct board_info *bi)
1022 {
1023 unsigned int i;
1024
1025 adapter->params.brd_info = bi;
1026 adapter->params.nports = bi->port_number;
1027 adapter->params.stats_update_period = bi->gmac->stats_update_period;
1028
1029 adapter->sge = t1_sge_create(adapter, &adapter->params.sge);
1030 if (!adapter->sge) {
1031 CH_ERR("%s: SGE initialization failed\n",
1032 adapter->name);
1033 goto error;
1034 }
1035
1036 if (bi->espi_nports && !(adapter->espi = t1_espi_create(adapter))) {
1037 CH_ERR("%s: ESPI initialization failed\n",
1038 adapter->name);
1039 goto error;
1040 }
1041
1042 adapter->tp = t1_tp_create(adapter, &adapter->params.tp);
1043 if (!adapter->tp) {
1044 CH_ERR("%s: TP initialization failed\n",
1045 adapter->name);
1046 goto error;
1047 }
1048
1049 board_init(adapter, bi);
1050 bi->mdio_ops->init(adapter, bi);
1051 if (bi->gphy->reset)
1052 bi->gphy->reset(adapter);
1053 if (bi->gmac->reset)
1054 bi->gmac->reset(adapter);
1055
1056 for_each_port(adapter, i) {
1057 u8 hw_addr[6];
1058 struct cmac *mac;
1059 int phy_addr = bi->mdio_phybaseaddr + i;
1060
1061 adapter->port[i].phy = bi->gphy->create(adapter, phy_addr,
1062 bi->mdio_ops);
1063 if (!adapter->port[i].phy) {
1064 CH_ERR("%s: PHY %d initialization failed\n",
1065 adapter->name, i);
1066 goto error;
1067 }
1068
1069 adapter->port[i].mac = mac = bi->gmac->create(adapter, i);
1070 if (!mac) {
1071 CH_ERR("%s: MAC %d initialization failed\n",
1072 adapter->name, i);
1073 goto error;
1074 }
1075
1076 /*
1077 * Get the port's MAC addresses either from the EEPROM if one
1078 * exists or the one hardcoded in the MAC.
1079 */
1080 if (!t1_is_asic(adapter) || bi->chip_mac == CHBT_MAC_DUMMY)
1081 mac->ops->macaddress_get(mac, hw_addr);
1082 else if (vpd_macaddress_get(adapter, i, hw_addr)) {
1083 CH_ERR("%s: could not read MAC address from VPD ROM\n",
1084 adapter->port[i].dev->name);
1085 goto error;
1086 }
1087 memcpy(adapter->port[i].dev->dev_addr, hw_addr, ETH_ALEN);
1088 init_link_config(&adapter->port[i].link_config, bi);
1089 }
1090
1091 get_pci_mode(adapter, &adapter->params.pci);
1092 t1_interrupts_clear(adapter);
1093 return 0;
1094
1095 error:
1096 t1_free_sw_modules(adapter);
1097 return -1;
1098 }
Linux with added FPC-III support