git.oblomov.eu Git - linux-2.6/blob - 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(adapter_t *adapter, int phy_addr, int mmd_addr,
 288                          int reg_addr, unsigned int *valp)
 289 {
 290         u32 addr = V_MI1_REG_ADDR(reg_addr) | V_MI1_PHY_ADDR(phy_addr);
 291
 292         if (mmd_addr)
 293                 return -EINVAL;
 294
 295         spin_lock(&adapter->tpi_lock);
 296         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);
 297         __t1_tpi_write(adapter,
 298                         A_ELMER0_PORT0_MI1_OP, MI1_OP_DIRECT_READ);
 299         mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
 300         __t1_tpi_read(adapter, A_ELMER0_PORT0_MI1_DATA, valp);
 301         spin_unlock(&adapter->tpi_lock);
 302         return 0;
 303 }
 304
 305 static int mi1_mdio_write(adapter_t *adapter, int phy_addr, int mmd_addr,
 306                           int reg_addr, unsigned int val)
 307 {
 308         u32 addr = V_MI1_REG_ADDR(reg_addr) | V_MI1_PHY_ADDR(phy_addr);
 309
 310         if (mmd_addr)
 311                 return -EINVAL;
 312
 313         spin_lock(&adapter->tpi_lock);
 314         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);
 315         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, val);
 316         __t1_tpi_write(adapter,
 317                         A_ELMER0_PORT0_MI1_OP, MI1_OP_DIRECT_WRITE);
 318         mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
 319         spin_unlock(&adapter->tpi_lock);
 320         return 0;
 321 }
 322
 323 #if defined(CONFIG_CHELSIO_T1_1G) || defined(CONFIG_CHELSIO_T1_COUGAR)
 324 static struct mdio_ops mi1_mdio_ops = {
 325         mi1_mdio_init,
 326         mi1_mdio_read,
 327         mi1_mdio_write
 328 };
 329 #endif
 330
 331 #endif
 332
 333 static int mi1_mdio_ext_read(adapter_t *adapter, int phy_addr, int mmd_addr,
 334                              int reg_addr, unsigned int *valp)
 335 {
 336         u32 addr = V_MI1_REG_ADDR(mmd_addr) | V_MI1_PHY_ADDR(phy_addr);
 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, valp);
 354         spin_unlock(&adapter->tpi_lock);
 355         return 0;
 356 }
 357
 358 static int mi1_mdio_ext_write(adapter_t *adapter, int phy_addr, int mmd_addr,
 359                               int reg_addr, unsigned int val)
 360 {
 361         u32 addr = V_MI1_REG_ADDR(mmd_addr) | V_MI1_PHY_ADDR(phy_addr);
 362
 363         spin_lock(&adapter->tpi_lock);
 364
 365         /* Write the address we want. */
 366         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);
 367         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, reg_addr);
 368         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_OP,
 369                        MI1_OP_INDIRECT_ADDRESS);
 370         mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
 371
 372         /* Write the data. */
 373         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, val);
 374         __t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_OP, MI1_OP_INDIRECT_WRITE);
 375         mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);
 376         spin_unlock(&adapter->tpi_lock);
 377         return 0;
 378 }
 379
 380 static struct mdio_ops mi1_mdio_ext_ops = {
 381         mi1_mdio_init,
 382         mi1_mdio_ext_read,
 383         mi1_mdio_ext_write
 384 };
 385
 386 enum {
 387         CH_BRD_T110_1CU,
 388         CH_BRD_N110_1F,
 389         CH_BRD_N210_1F,
 390         CH_BRD_T210_1F,
 391         CH_BRD_T210_1CU,
 392         CH_BRD_N204_4CU,
 393 };
 394
 395 static struct board_info t1_board[] = {
 396
 397 { CHBT_BOARD_CHT110, 1/*ports#*/,
 398   SUPPORTED_10000baseT_Full /*caps*/, CHBT_TERM_T1,
 399   CHBT_MAC_PM3393, CHBT_PHY_MY3126,
 400   125000000/*clk-core*/, 150000000/*clk-mc3*/, 125000000/*clk-mc4*/,
 401   1/*espi-ports*/, 0/*clk-cspi*/, 44/*clk-elmer0*/, 1/*mdien*/,
 402   1/*mdiinv*/, 1/*mdc*/, 1/*phybaseaddr*/, &t1_pm3393_ops,
 403   &t1_my3126_ops, &mi1_mdio_ext_ops,
 404   "Chelsio T110 1x10GBase-CX4 TOE" },
 405
 406 { CHBT_BOARD_N110, 1/*ports#*/,
 407   SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE /*caps*/, CHBT_TERM_T1,
 408   CHBT_MAC_PM3393, CHBT_PHY_88X2010,
 409   125000000/*clk-core*/, 0/*clk-mc3*/, 0/*clk-mc4*/,
 410   1/*espi-ports*/, 0/*clk-cspi*/, 44/*clk-elmer0*/, 0/*mdien*/,
 411   0/*mdiinv*/, 1/*mdc*/, 0/*phybaseaddr*/, &t1_pm3393_ops,
 412   &t1_mv88x201x_ops, &mi1_mdio_ext_ops,
 413   "Chelsio N110 1x10GBaseX NIC" },
 414
 415 { CHBT_BOARD_N210, 1/*ports#*/,
 416   SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE /*caps*/, CHBT_TERM_T2,
 417   CHBT_MAC_PM3393, CHBT_PHY_88X2010,
 418   125000000/*clk-core*/, 0/*clk-mc3*/, 0/*clk-mc4*/,
 419   1/*espi-ports*/, 0/*clk-cspi*/, 44/*clk-elmer0*/, 0/*mdien*/,
 420   0/*mdiinv*/, 1/*mdc*/, 0/*phybaseaddr*/, &t1_pm3393_ops,
 421   &t1_mv88x201x_ops, &mi1_mdio_ext_ops,
 422   "Chelsio N210 1x10GBaseX NIC" },
 423
 424 { CHBT_BOARD_CHT210, 1/*ports#*/,
 425   SUPPORTED_10000baseT_Full /*caps*/, CHBT_TERM_T2,
 426   CHBT_MAC_PM3393, CHBT_PHY_88X2010,
 427   125000000/*clk-core*/, 133000000/*clk-mc3*/, 125000000/*clk-mc4*/,
 428   1/*espi-ports*/, 0/*clk-cspi*/, 44/*clk-elmer0*/, 0/*mdien*/,
 429   0/*mdiinv*/, 1/*mdc*/, 0/*phybaseaddr*/, &t1_pm3393_ops,
 430   &t1_mv88x201x_ops, &mi1_mdio_ext_ops,
 431   "Chelsio T210 1x10GBaseX TOE" },
 432
 433 { CHBT_BOARD_CHT210, 1/*ports#*/,
 434   SUPPORTED_10000baseT_Full /*caps*/, CHBT_TERM_T2,
 435   CHBT_MAC_PM3393, CHBT_PHY_MY3126,
 436   125000000/*clk-core*/, 133000000/*clk-mc3*/, 125000000/*clk-mc4*/,
 437   1/*espi-ports*/, 0/*clk-cspi*/, 44/*clk-elmer0*/, 1/*mdien*/,
 438   1/*mdiinv*/, 1/*mdc*/, 1/*phybaseaddr*/, &t1_pm3393_ops,
 439   &t1_my3126_ops, &mi1_mdio_ext_ops,
 440   "Chelsio T210 1x10GBase-CX4 TOE" },
 441
 442 #ifdef CONFIG_CHELSIO_T1_1G
 443 { CHBT_BOARD_CHN204, 4/*ports#*/,
 444   SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Half |
 445   SUPPORTED_100baseT_Full | SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg |
 446   SUPPORTED_PAUSE | SUPPORTED_TP /*caps*/, CHBT_TERM_T2, CHBT_MAC_VSC7321, CHBT_PHY_88E1111,
 447   100000000/*clk-core*/, 0/*clk-mc3*/, 0/*clk-mc4*/,
 448   4/*espi-ports*/, 0/*clk-cspi*/, 44/*clk-elmer0*/, 0/*mdien*/,
 449   0/*mdiinv*/, 1/*mdc*/, 4/*phybaseaddr*/, &t1_vsc7326_ops,
 450   &t1_mv88e1xxx_ops, &mi1_mdio_ops,
 451   "Chelsio N204 4x100/1000BaseT NIC" },
 452 #endif
 453
 454 };
 455
 456 struct pci_device_id t1_pci_tbl[] = {
 457         CH_DEVICE(8, 0, CH_BRD_T110_1CU),
 458         CH_DEVICE(8, 1, CH_BRD_T110_1CU),
 459         CH_DEVICE(7, 0, CH_BRD_N110_1F),
 460         CH_DEVICE(10, 1, CH_BRD_N210_1F),
 461         CH_DEVICE(11, 1, CH_BRD_T210_1F),
 462         CH_DEVICE(14, 1, CH_BRD_T210_1CU),
 463         CH_DEVICE(16, 1, CH_BRD_N204_4CU),
 464         { 0 }
 465 };
 466
 467 MODULE_DEVICE_TABLE(pci, t1_pci_tbl);
 468
 469 /*
 470  * Return the board_info structure with a given index.  Out-of-range indices
 471  * return NULL.
 472  */
 473 const struct board_info *t1_get_board_info(unsigned int board_id)
 474 {
 475         return board_id < ARRAY_SIZE(t1_board) ? &t1_board[board_id] : NULL;
 476 }
 477
 478 struct chelsio_vpd_t {
 479         u32 format_version;
 480         u8 serial_number[16];
 481         u8 mac_base_address[6];
 482         u8 pad[2];           /* make multiple-of-4 size requirement explicit */
 483 };
 484
 485 #define EEPROMSIZE        (8 * 1024)
 486 #define EEPROM_MAX_POLL   4
 487
 488 /*
 489  * Read SEEPROM. A zero is written to the flag register when the addres is
 490  * written to the Control register. The hardware device will set the flag to a
 491  * one when 4B have been transferred to the Data register.
 492  */
 493 int t1_seeprom_read(adapter_t *adapter, u32 addr, u32 *data)
 494 {
 495         int i = EEPROM_MAX_POLL;
 496         u16 val;
 497
 498         if (addr >= EEPROMSIZE || (addr & 3))
 499                 return -EINVAL;
 500
 501         pci_write_config_word(adapter->pdev, A_PCICFG_VPD_ADDR, (u16)addr);
 502         do {
 503                 udelay(50);
 504                 pci_read_config_word(adapter->pdev, A_PCICFG_VPD_ADDR, &val);
 505         } while (!(val & F_VPD_OP_FLAG) && --i);
 506
 507         if (!(val & F_VPD_OP_FLAG)) {
 508                 CH_ERR("%s: reading EEPROM address 0x%x failed\n",
 509                        adapter->name, addr);
 510                 return -EIO;
 511         }
 512         pci_read_config_dword(adapter->pdev, A_PCICFG_VPD_DATA, data);
 513         *data = le32_to_cpu(*data);
 514         return 0;
 515 }
 516
 517 static int t1_eeprom_vpd_get(adapter_t *adapter, struct chelsio_vpd_t *vpd)
 518 {
 519         int addr, ret = 0;
 520
 521         for (addr = 0; !ret && addr < sizeof(*vpd); addr += sizeof(u32))
 522                 ret = t1_seeprom_read(adapter, addr,
 523                                       (u32 *)((u8 *)vpd + addr));
 524
 525         return ret;
 526 }
 527
 528 /*
 529  * Read a port's MAC address from the VPD ROM.
 530  */
 531 static int vpd_macaddress_get(adapter_t *adapter, int index, u8 mac_addr[])
 532 {
 533         struct chelsio_vpd_t vpd;
 534
 535         if (t1_eeprom_vpd_get(adapter, &vpd))
 536                 return 1;
 537         memcpy(mac_addr, vpd.mac_base_address, 5);
 538         mac_addr[5] = vpd.mac_base_address[5] + index;
 539         return 0;
 540 }
 541
 542 /*
 543  * Set up the MAC/PHY according to the requested link settings.
 544  *
 545  * If the PHY can auto-negotiate first decide what to advertise, then
 546  * enable/disable auto-negotiation as desired and reset.
 547  *
 548  * If the PHY does not auto-negotiate we just reset it.
 549  *
 550  * If auto-negotiation is off set the MAC to the proper speed/duplex/FC,
 551  * otherwise do it later based on the outcome of auto-negotiation.
 552  */
 553 int t1_link_start(struct cphy *phy, struct cmac *mac, struct link_config *lc)
 554 {
 555         unsigned int fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);
 556
 557         if (lc->supported & SUPPORTED_Autoneg) {
 558                 lc->advertising &= ~(ADVERTISED_ASYM_PAUSE | ADVERTISED_PAUSE);
 559                 if (fc) {
 560                         if (fc == ((PAUSE_RX | PAUSE_TX) &
 561                                    (mac->adapter->params.nports < 2)))
 562                                 lc->advertising |= ADVERTISED_PAUSE;
 563                         else {
 564                                 lc->advertising |= ADVERTISED_ASYM_PAUSE;
 565                                 if (fc == PAUSE_RX)
 566                                         lc->advertising |= ADVERTISED_PAUSE;
 567                         }
 568                 }
 569                 phy->ops->advertise(phy, lc->advertising);
 570
 571                 if (lc->autoneg == AUTONEG_DISABLE) {
 572                         lc->speed = lc->requested_speed;
 573                         lc->duplex = lc->requested_duplex;
 574                         lc->fc = (unsigned char)fc;
 575                         mac->ops->set_speed_duplex_fc(mac, lc->speed,
 576                                                       lc->duplex, fc);
 577                         /* Also disables autoneg */
 578                         phy->state = PHY_AUTONEG_RDY;
 579                         phy->ops->set_speed_duplex(phy, lc->speed, lc->duplex);
 580                         phy->ops->reset(phy, 0);
 581                 } else {
 582                         phy->state = PHY_AUTONEG_EN;
 583                         phy->ops->autoneg_enable(phy); /* also resets PHY */
 584                 }
 585         } else {
 586                 phy->state = PHY_AUTONEG_RDY;
 587                 mac->ops->set_speed_duplex_fc(mac, -1, -1, fc);
 588                 lc->fc = (unsigned char)fc;
 589                 phy->ops->reset(phy, 0);
 590         }
 591         return 0;
 592 }
 593
 594 /*
 595  * External interrupt handler for boards using elmer0.
 596  */
 597 int t1_elmer0_ext_intr_handler(adapter_t *adapter)
 598 {
 599         struct cphy *phy;
 600         int phy_cause;
 601         u32 cause;
 602
 603         t1_tpi_read(adapter, A_ELMER0_INT_CAUSE, &cause);
 604
 605         switch (board_info(adapter)->board) {
 606 #ifdef CONFIG_CHELSIO_T1_1G
 607         case CHBT_BOARD_CHT204:
 608         case CHBT_BOARD_CHT204E:
 609         case CHBT_BOARD_CHN204:
 610         case CHBT_BOARD_CHT204V: {
 611                 int i, port_bit;
 612                 for_each_port(adapter, i) {
 613                         port_bit = i + 1;
 614                         if (!(cause & (1 << port_bit)))
 615                                 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)))
 692                                         continue;
 693
 694                                 phy = adapter->port[i].phy;
 695                                 phy_cause = phy->ops->interrupt_handler(phy);
 696                                 if (phy_cause & cphy_cause_link_change)
 697                                         t1_link_changed(adapter, i);
 698                         }
 699                 }
 700                 break;
 701 #endif
 702         }
 703         t1_tpi_write(adapter, A_ELMER0_INT_CAUSE, cause);
 704         return 0;
 705 }
 706
 707 /* Enables all interrupts. */
 708 void t1_interrupts_enable(adapter_t *adapter)
 709 {
 710         unsigned int i;
 711
 712         adapter->slow_intr_mask = F_PL_INTR_SGE_ERR | F_PL_INTR_TP;
 713
 714         t1_sge_intr_enable(adapter->sge);
 715         t1_tp_intr_enable(adapter->tp);
 716         if (adapter->espi) {
 717                 adapter->slow_intr_mask |= F_PL_INTR_ESPI;
 718                 t1_espi_intr_enable(adapter->espi);
 719         }
 720
 721         /* Enable MAC/PHY interrupts for each port. */
 722         for_each_port(adapter, i) {
 723                 adapter->port[i].mac->ops->interrupt_enable(adapter->port[i].mac);
 724                 adapter->port[i].phy->ops->interrupt_enable(adapter->port[i].phy);
 725         }
 726
 727         /* Enable PCIX & external chip interrupts on ASIC boards. */
 728         if (t1_is_asic(adapter)) {
 729                 u32 pl_intr = readl(adapter->regs + A_PL_ENABLE);
 730
 731                 /* PCI-X interrupts */
 732                 pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_ENABLE,
 733                                        0xffffffff);
 734
 735                 adapter->slow_intr_mask |= F_PL_INTR_EXT | F_PL_INTR_PCIX;
 736                 pl_intr |= F_PL_INTR_EXT | F_PL_INTR_PCIX;
 737                 writel(pl_intr, adapter->regs + A_PL_ENABLE);
 738         }
 739 }
 740
 741 /* Disables all interrupts. */
 742 void t1_interrupts_disable(adapter_t* adapter)
 743 {
 744         unsigned int i;
 745
 746         t1_sge_intr_disable(adapter->sge);
 747         t1_tp_intr_disable(adapter->tp);
 748         if (adapter->espi)
 749                 t1_espi_intr_disable(adapter->espi);
 750
 751         /* Disable MAC/PHY interrupts for each port. */
 752         for_each_port(adapter, i) {
 753                 adapter->port[i].mac->ops->interrupt_disable(adapter->port[i].mac);
 754                 adapter->port[i].phy->ops->interrupt_disable(adapter->port[i].phy);
 755         }
 756
 757         /* Disable PCIX & external chip interrupts. */
 758         if (t1_is_asic(adapter))
 759                 writel(0, adapter->regs + A_PL_ENABLE);
 760
 761         /* PCI-X interrupts */
 762         pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_ENABLE, 0);
 763
 764         adapter->slow_intr_mask = 0;
 765 }
 766
 767 /* Clears all interrupts */
 768 void t1_interrupts_clear(adapter_t* adapter)
 769 {
 770         unsigned int i;
 771
 772         t1_sge_intr_clear(adapter->sge);
 773         t1_tp_intr_clear(adapter->tp);
 774         if (adapter->espi)
 775                 t1_espi_intr_clear(adapter->espi);
 776
 777         /* Clear MAC/PHY interrupts for each port. */
 778         for_each_port(adapter, i) {
 779                 adapter->port[i].mac->ops->interrupt_clear(adapter->port[i].mac);
 780                 adapter->port[i].phy->ops->interrupt_clear(adapter->port[i].phy);
 781         }
 782
 783         /* Enable interrupts for external devices. */
 784         if (t1_is_asic(adapter)) {
 785                 u32 pl_intr = readl(adapter->regs + A_PL_CAUSE);
 786
 787                 writel(pl_intr | F_PL_INTR_EXT | F_PL_INTR_PCIX,
 788                        adapter->regs + A_PL_CAUSE);
 789         }
 790
 791         /* PCI-X interrupts */
 792         pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_CAUSE, 0xffffffff);
 793 }
 794
 795 /*
 796  * Slow path interrupt handler for ASICs.
 797  */
 798 static int asic_slow_intr(adapter_t *adapter)
 799 {
 800         u32 cause = readl(adapter->regs + A_PL_CAUSE);
 801
 802         cause &= adapter->slow_intr_mask;
 803         if (!cause)
 804                 return 0;
 805         if (cause & F_PL_INTR_SGE_ERR)
 806                 t1_sge_intr_error_handler(adapter->sge);
 807         if (cause & F_PL_INTR_TP)
 808                 t1_tp_intr_handler(adapter->tp);
 809         if (cause & F_PL_INTR_ESPI)
 810                 t1_espi_intr_handler(adapter->espi);
 811         if (cause & F_PL_INTR_PCIX)
 812                 t1_pci_intr_handler(adapter);
 813         if (cause & F_PL_INTR_EXT)
 814                 t1_elmer0_ext_intr_handler(adapter);
 815
 816         /* Clear the interrupts just processed. */
 817         writel(cause, adapter->regs + A_PL_CAUSE);
 818         readl(adapter->regs + A_PL_CAUSE); /* flush writes */
 819         return 1;
 820 }
 821
 822 int t1_slow_intr_handler(adapter_t *adapter)
 823 {
 824 #ifdef CONFIG_CHELSIO_T1_1G
 825         if (!t1_is_asic(adapter))
 826                 return fpga_slow_intr(adapter);
 827 #endif
 828         return asic_slow_intr(adapter);
 829 }
 830
 831 /* Power sequencing is a work-around for Intel's XPAKs. */
 832 static void power_sequence_xpak(adapter_t* adapter)
 833 {
 834         u32 mod_detect;
 835         u32 gpo;
 836
 837         /* Check for XPAK */
 838         t1_tpi_read(adapter, A_ELMER0_GPI_STAT, &mod_detect);
 839         if (!(ELMER0_GP_BIT5 & mod_detect)) {
 840                 /* XPAK is present */
 841                 t1_tpi_read(adapter, A_ELMER0_GPO, &gpo);
 842                 gpo |= ELMER0_GP_BIT18;
 843                 t1_tpi_write(adapter, A_ELMER0_GPO, gpo);
 844         }
 845 }
 846
 847 int __devinit t1_get_board_rev(adapter_t *adapter, const struct board_info *bi,
 848                                struct adapter_params *p)
 849 {
 850         p->chip_version = bi->chip_term;
 851         p->is_asic = (p->chip_version != CHBT_TERM_FPGA);
 852         if (p->chip_version == CHBT_TERM_T1 ||
 853             p->chip_version == CHBT_TERM_T2 ||
 854             p->chip_version == CHBT_TERM_FPGA) {
 855                 u32 val = readl(adapter->regs + A_TP_PC_CONFIG);
 856
 857                 val = G_TP_PC_REV(val);
 858                 if (val == 2)
 859                         p->chip_revision = TERM_T1B;
 860                 else if (val == 3)
 861                         p->chip_revision = TERM_T2;
 862                 else
 863                         return -1;
 864         } else
 865                 return -1;
 866         return 0;
 867 }
 868
 869 /*
 870  * Enable board components other than the Chelsio chip, such as external MAC
 871  * and PHY.
 872  */
 873 static int board_init(adapter_t *adapter, const struct board_info *bi)
 874 {
 875         switch (bi->board) {
 876         case CHBT_BOARD_8000:
 877         case CHBT_BOARD_N110:
 878         case CHBT_BOARD_N210:
 879         case CHBT_BOARD_CHT210:
 880         case CHBT_BOARD_COUGAR:
 881                 t1_tpi_par(adapter, 0xf);
 882                 t1_tpi_write(adapter, A_ELMER0_GPO, 0x800);
 883                 break;
 884         case CHBT_BOARD_CHT110:
 885                 t1_tpi_par(adapter, 0xf);
 886                 t1_tpi_write(adapter, A_ELMER0_GPO, 0x1800);
 887
 888                 /* TBD XXX Might not need.  This fixes a problem
 889                  *         described in the Intel SR XPAK errata.
 890                  */
 891                 power_sequence_xpak(adapter);
 892                 break;
 893 #ifdef CONFIG_CHELSIO_T1_1G
 894         case CHBT_BOARD_CHT204E:
 895                 /* add config space write here */
 896         case CHBT_BOARD_CHT204:
 897         case CHBT_BOARD_CHT204V:
 898         case CHBT_BOARD_CHN204:
 899                 t1_tpi_par(adapter, 0xf);
 900                 t1_tpi_write(adapter, A_ELMER0_GPO, 0x804);
 901                 break;
 902         case CHBT_BOARD_CHT101:
 903         case CHBT_BOARD_7500:
 904                 t1_tpi_par(adapter, 0xf);
 905                 t1_tpi_write(adapter, A_ELMER0_GPO, 0x1804);
 906                 break;
 907 #endif
 908         }
 909         return 0;
 910 }
 911
 912 /*
 913  * Initialize and configure the Terminator HW modules.  Note that external
 914  * MAC and PHYs are initialized separately.
 915  */
 916 int t1_init_hw_modules(adapter_t *adapter)
 917 {
 918         int err = -EIO;
 919         const struct board_info *bi = board_info(adapter);
 920
 921         if (!bi->clock_mc4) {
 922                 u32 val = readl(adapter->regs + A_MC4_CFG);
 923
 924                 writel(val | F_READY | F_MC4_SLOW, adapter->regs + A_MC4_CFG);
 925                 writel(F_M_BUS_ENABLE | F_TCAM_RESET,
 926                        adapter->regs + A_MC5_CONFIG);
 927         }
 928
 929 #ifdef CONFIG_CHELSIO_T1_COUGAR
 930         if (adapter->cspi && t1_cspi_init(adapter->cspi))
 931                 goto out_err;
 932 #endif
 933         if (adapter->espi && t1_espi_init(adapter->espi, bi->chip_mac,
 934                                           bi->espi_nports))
 935                 goto out_err;
 936
 937         if (t1_tp_reset(adapter->tp, &adapter->params.tp, bi->clock_core))
 938                 goto out_err;
 939
 940         err = t1_sge_configure(adapter->sge, &adapter->params.sge);
 941         if (err)
 942                 goto out_err;
 943
 944         err = 0;
 945 out_err:
 946         return err;
 947 }
 948
 949 /*
 950  * Determine a card's PCI mode.
 951  */
 952 static void __devinit get_pci_mode(adapter_t *adapter, struct chelsio_pci_params *p)
 953 {
 954         static const unsigned short speed_map[] = { 33, 66, 100, 133 };
 955         u32 pci_mode;
 956
 957         pci_read_config_dword(adapter->pdev, A_PCICFG_MODE, &pci_mode);
 958         p->speed = speed_map[G_PCI_MODE_CLK(pci_mode)];
 959         p->width = (pci_mode & F_PCI_MODE_64BIT) ? 64 : 32;
 960         p->is_pcix = (pci_mode & F_PCI_MODE_PCIX) != 0;
 961 }
 962
 963 /*
 964  * Release the structures holding the SW per-Terminator-HW-module state.
 965  */
 966 void t1_free_sw_modules(adapter_t *adapter)
 967 {
 968         unsigned int i;
 969
 970         for_each_port(adapter, i) {
 971                 struct cmac *mac = adapter->port[i].mac;
 972                 struct cphy *phy = adapter->port[i].phy;
 973
 974                 if (mac)
 975                         mac->ops->destroy(mac);
 976                 if (phy)
 977                         phy->ops->destroy(phy);
 978         }
 979
 980         if (adapter->sge)
 981                 t1_sge_destroy(adapter->sge);
 982         if (adapter->tp)
 983                 t1_tp_destroy(adapter->tp);
 984         if (adapter->espi)
 985                 t1_espi_destroy(adapter->espi);
 986 #ifdef CONFIG_CHELSIO_T1_COUGAR
 987         if (adapter->cspi)
 988                 t1_cspi_destroy(adapter->cspi);
 989 #endif
 990 }
 991
 992 static void __devinit init_link_config(struct link_config *lc,
 993                                        const struct board_info *bi)
 994 {
 995         lc->supported = bi->caps;
 996         lc->requested_speed = lc->speed = SPEED_INVALID;
 997         lc->requested_duplex = lc->duplex = DUPLEX_INVALID;
 998         lc->requested_fc = lc->fc = PAUSE_RX | PAUSE_TX;
 999         if (lc->supported & SUPPORTED_Autoneg) {
1000                 lc->advertising = lc->supported;
1001                 lc->autoneg = AUTONEG_ENABLE;
1002                 lc->requested_fc |= PAUSE_AUTONEG;
1003         } else {
1004                 lc->advertising = 0;
1005                 lc->autoneg = AUTONEG_DISABLE;
1006         }
1007 }
1008
1009 #ifdef CONFIG_CHELSIO_T1_COUGAR
1010         if (bi->clock_cspi && !(adapter->cspi = t1_cspi_create(adapter))) {
1011                 CH_ERR("%s: CSPI initialization failed\n",
1012                        adapter->name);
1013                 goto error;
1014         }
1015 #endif
1016
1017 /*
1018  * Allocate and initialize the data structures that hold the SW state of
1019  * the Terminator HW modules.
1020  */
1021 int __devinit t1_init_sw_modules(adapter_t *adapter,
1022                                  const struct board_info *bi)
1023 {
1024         unsigned int i;
1025
1026         adapter->params.brd_info = bi;
1027         adapter->params.nports = bi->port_number;
1028         adapter->params.stats_update_period = bi->gmac->stats_update_period;
1029
1030         adapter->sge = t1_sge_create(adapter, &adapter->params.sge);
1031         if (!adapter->sge) {
1032                 CH_ERR("%s: SGE initialization failed\n",
1033                        adapter->name);
1034                 goto error;
1035         }
1036
1037         if (bi->espi_nports && !(adapter->espi = t1_espi_create(adapter))) {
1038                 CH_ERR("%s: ESPI initialization failed\n",
1039                        adapter->name);
1040                 goto error;
1041         }
1042
1043         adapter->tp = t1_tp_create(adapter, &adapter->params.tp);
1044         if (!adapter->tp) {
1045                 CH_ERR("%s: TP initialization failed\n",
1046                        adapter->name);
1047                 goto error;
1048         }
1049
1050         board_init(adapter, bi);
1051         bi->mdio_ops->init(adapter, bi);
1052         if (bi->gphy->reset)
1053                 bi->gphy->reset(adapter);
1054         if (bi->gmac->reset)
1055                 bi->gmac->reset(adapter);
1056
1057         for_each_port(adapter, i) {
1058                 u8 hw_addr[6];
1059                 struct cmac *mac;
1060                 int phy_addr = bi->mdio_phybaseaddr + i;
1061
1062                 adapter->port[i].phy = bi->gphy->create(adapter, phy_addr,
1063                                                         bi->mdio_ops);
1064                 if (!adapter->port[i].phy) {
1065                         CH_ERR("%s: PHY %d initialization failed\n",
1066                                adapter->name, i);
1067                         goto error;
1068                 }
1069
1070                 adapter->port[i].mac = mac = bi->gmac->create(adapter, i);
1071                 if (!mac) {
1072                         CH_ERR("%s: MAC %d initialization failed\n",
1073                                adapter->name, i);
1074                         goto error;
1075                 }
1076
1077                 /*
1078                  * Get the port's MAC addresses either from the EEPROM if one
1079                  * exists or the one hardcoded in the MAC.
1080                  */
1081                 if (!t1_is_asic(adapter) || bi->chip_mac == CHBT_MAC_DUMMY)
1082                         mac->ops->macaddress_get(mac, hw_addr);
1083                 else if (vpd_macaddress_get(adapter, i, hw_addr)) {
1084                         CH_ERR("%s: could not read MAC address from VPD ROM\n",
1085                                adapter->port[i].dev->name);
1086                         goto error;
1087                 }
1088                 memcpy(adapter->port[i].dev->dev_addr, hw_addr, ETH_ALEN);
1089                 init_link_config(&adapter->port[i].link_config, bi);
1090         }
1091
1092         get_pci_mode(adapter, &adapter->params.pci);
1093         t1_interrupts_clear(adapter);
1094         return 0;
1095
1096 error:
1097         t1_free_sw_modules(adapter);
1098         return -1;
1099 }