LXR linux/drivers/net/ethernet/chelsio/cxgb/pm3393.c

   1/*****************************************************************************
   2 *                                                                           *
   3 * File: pm3393.c                                                            *
   4 * $Revision: 1.16 $                                                         *
   5 * $Date: 2005/05/14 00:59:32 $                                              *
   6 * Description:                                                              *
   7 *  PMC/SIERRA (pm3393) MAC-PHY functionality.                               *
   8 *  part of the Chelsio 10Gb Ethernet Driver.                                *
   9 *                                                                           *
  10 * This program is free software; you can redistribute it and/or modify      *
  11 * it under the terms of the GNU General Public License, version 2, as       *
  12 * published by the Free Software Foundation.                                *
  13 *                                                                           *
  14 * You should have received a copy of the GNU General Public License along   *
  15 * with this program; if not, see <http://www.gnu.org/licenses/>.            *
  16 *                                                                           *
  17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED    *
  18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF      *
  19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.                     *
  20 *                                                                           *
  21 * http://www.chelsio.com                                                    *
  22 *                                                                           *
  23 * Copyright (c) 2003 - 2005 Chelsio Communications, Inc.                    *
  24 * All rights reserved.                                                      *
  25 *                                                                           *
  26 * Maintainers: maintainers@chelsio.com                                      *
  27 *                                                                           *
  28 * Authors: Dimitrios Michailidis   <dm@chelsio.com>                         *
  29 *          Tina Yang               <tainay@chelsio.com>                     *
  30 *          Felix Marti             <felix@chelsio.com>                      *
  31 *          Scott Bardone           <sbardone@chelsio.com>                   *
  32 *          Kurt Ottaway            <kottaway@chelsio.com>                   *
  33 *          Frank DiMambro          <frank@chelsio.com>                      *
  34 *                                                                           *
  35 * History:                                                                  *
  36 *                                                                           *
  37 ****************************************************************************/
  38
  39#include "common.h"
  40#include "regs.h"
  41#include "gmac.h"
  42#include "elmer0.h"
  43#include "suni1x10gexp_regs.h"
  44
  45#include <linux/crc32.h>
  46#include <linux/slab.h>
  47
  48#define OFFSET(REG_ADDR)    ((REG_ADDR) << 2)
  49
  50/* Max frame size PM3393 can handle. Includes Ethernet header and CRC. */
  51#define MAX_FRAME_SIZE  9600
  52
  53#define IPG 12
  54#define TXXG_CONF1_VAL ((IPG << SUNI1x10GEXP_BITOFF_TXXG_IPGT) | \
  55        SUNI1x10GEXP_BITMSK_TXXG_32BIT_ALIGN | SUNI1x10GEXP_BITMSK_TXXG_CRCEN | \
  56        SUNI1x10GEXP_BITMSK_TXXG_PADEN)
  57#define RXXG_CONF1_VAL (SUNI1x10GEXP_BITMSK_RXXG_PUREP | 0x14 | \
  58        SUNI1x10GEXP_BITMSK_RXXG_FLCHK | SUNI1x10GEXP_BITMSK_RXXG_CRC_STRIP)
  59
  60/* Update statistics every 15 minutes */
  61#define STATS_TICK_SECS (15 * 60)
  62
  63enum {                     /* RMON registers */
  64        RxOctetsReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_1_LOW,
  65        RxUnicastFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_4_LOW,
  66        RxMulticastFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_5_LOW,
  67        RxBroadcastFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_6_LOW,
  68        RxPAUSEMACCtrlFramesReceived = SUNI1x10GEXP_REG_MSTAT_COUNTER_8_LOW,
  69        RxFrameCheckSequenceErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_10_LOW,
  70        RxFramesLostDueToInternalMACErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_11_LOW,
  71        RxSymbolErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_12_LOW,
  72        RxInRangeLengthErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_13_LOW,
  73        RxFramesTooLongErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_15_LOW,
  74        RxJabbers = SUNI1x10GEXP_REG_MSTAT_COUNTER_16_LOW,
  75        RxFragments = SUNI1x10GEXP_REG_MSTAT_COUNTER_17_LOW,
  76        RxUndersizedFrames =  SUNI1x10GEXP_REG_MSTAT_COUNTER_18_LOW,
  77        RxJumboFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_25_LOW,
  78        RxJumboOctetsReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_26_LOW,
  79
  80        TxOctetsTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_33_LOW,
  81        TxFramesLostDueToInternalMACTransmissionError = SUNI1x10GEXP_REG_MSTAT_COUNTER_35_LOW,
  82        TxTransmitSystemError = SUNI1x10GEXP_REG_MSTAT_COUNTER_36_LOW,
  83        TxUnicastFramesTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_38_LOW,
  84        TxMulticastFramesTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_40_LOW,
  85        TxBroadcastFramesTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_42_LOW,
  86        TxPAUSEMACCtrlFramesTransmitted = SUNI1x10GEXP_REG_MSTAT_COUNTER_43_LOW,
  87        TxJumboFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_51_LOW,
  88        TxJumboOctetsReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_52_LOW
  89};
  90
  91struct _cmac_instance {
  92        u8 enabled;
  93        u8 fc;
  94        u8 mac_addr[6];
  95};
  96
  97static int pmread(struct cmac *cmac, u32 reg, u32 * data32)
  98{
  99        t1_tpi_read(cmac->adapter, OFFSET(reg), data32);
 100        return 0;
 101}
 102
 103static int pmwrite(struct cmac *cmac, u32 reg, u32 data32)
 104{
 105        t1_tpi_write(cmac->adapter, OFFSET(reg), data32);
 106        return 0;
 107}
 108
 109/* Port reset. */
 110static int pm3393_reset(struct cmac *cmac)
 111{
 112        return 0;
 113}
 114
 115/*
 116 * Enable interrupts for the PM3393
 117 *
 118 *      1. Enable PM3393 BLOCK interrupts.
 119 *      2. Enable PM3393 Master Interrupt bit(INTE)
 120 *      3. Enable ELMER's PM3393 bit.
 121 *      4. Enable Terminator external interrupt.
 122 */
 123static int pm3393_interrupt_enable(struct cmac *cmac)
 124{
 125        u32 pl_intr;
 126
 127        /* PM3393 - Enabling all hardware block interrupts.
 128         */
 129        pmwrite(cmac, SUNI1x10GEXP_REG_SERDES_3125_INTERRUPT_ENABLE, 0xffff);
 130        pmwrite(cmac, SUNI1x10GEXP_REG_XRF_INTERRUPT_ENABLE, 0xffff);
 131        pmwrite(cmac, SUNI1x10GEXP_REG_XRF_DIAG_INTERRUPT_ENABLE, 0xffff);
 132        pmwrite(cmac, SUNI1x10GEXP_REG_RXOAM_INTERRUPT_ENABLE, 0xffff);
 133
 134        /* Don't interrupt on statistics overflow, we are polling */
 135        pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_0, 0);
 136        pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_1, 0);
 137        pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_2, 0);
 138        pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_3, 0);
 139
 140        pmwrite(cmac, SUNI1x10GEXP_REG_IFLX_FIFO_OVERFLOW_ENABLE, 0xffff);
 141        pmwrite(cmac, SUNI1x10GEXP_REG_PL4ODP_INTERRUPT_MASK, 0xffff);
 142        pmwrite(cmac, SUNI1x10GEXP_REG_XTEF_INTERRUPT_ENABLE, 0xffff);
 143        pmwrite(cmac, SUNI1x10GEXP_REG_TXOAM_INTERRUPT_ENABLE, 0xffff);
 144        pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_3, 0xffff);
 145        pmwrite(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_MASK, 0xffff);
 146        pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_3, 0xffff);
 147        pmwrite(cmac, SUNI1x10GEXP_REG_PL4IDU_INTERRUPT_MASK, 0xffff);
 148        pmwrite(cmac, SUNI1x10GEXP_REG_EFLX_FIFO_OVERFLOW_ERROR_ENABLE, 0xffff);
 149
 150        /* PM3393 - Global interrupt enable
 151         */
 152        /* TBD XXX Disable for now until we figure out why error interrupts keep asserting. */
 153        pmwrite(cmac, SUNI1x10GEXP_REG_GLOBAL_INTERRUPT_ENABLE,
 154                0 /*SUNI1x10GEXP_BITMSK_TOP_INTE */ );
 155
 156        /* TERMINATOR - PL_INTERUPTS_EXT */
 157        pl_intr = readl(cmac->adapter->regs + A_PL_ENABLE);
 158        pl_intr |= F_PL_INTR_EXT;
 159        writel(pl_intr, cmac->adapter->regs + A_PL_ENABLE);
 160        return 0;
 161}
 162
 163static int pm3393_interrupt_disable(struct cmac *cmac)
 164{
 165        u32 elmer;
 166
 167        /* PM3393 - Enabling HW interrupt blocks. */
 168        pmwrite(cmac, SUNI1x10GEXP_REG_SERDES_3125_INTERRUPT_ENABLE, 0);
 169        pmwrite(cmac, SUNI1x10GEXP_REG_XRF_INTERRUPT_ENABLE, 0);
 170        pmwrite(cmac, SUNI1x10GEXP_REG_XRF_DIAG_INTERRUPT_ENABLE, 0);
 171        pmwrite(cmac, SUNI1x10GEXP_REG_RXOAM_INTERRUPT_ENABLE, 0);
 172        pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_0, 0);
 173        pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_1, 0);
 174        pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_2, 0);
 175        pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_3, 0);
 176        pmwrite(cmac, SUNI1x10GEXP_REG_IFLX_FIFO_OVERFLOW_ENABLE, 0);
 177        pmwrite(cmac, SUNI1x10GEXP_REG_PL4ODP_INTERRUPT_MASK, 0);
 178        pmwrite(cmac, SUNI1x10GEXP_REG_XTEF_INTERRUPT_ENABLE, 0);
 179        pmwrite(cmac, SUNI1x10GEXP_REG_TXOAM_INTERRUPT_ENABLE, 0);
 180        pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_3, 0);
 181        pmwrite(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_MASK, 0);
 182        pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_3, 0);
 183        pmwrite(cmac, SUNI1x10GEXP_REG_PL4IDU_INTERRUPT_MASK, 0);
 184        pmwrite(cmac, SUNI1x10GEXP_REG_EFLX_FIFO_OVERFLOW_ERROR_ENABLE, 0);
 185
 186        /* PM3393 - Global interrupt enable */
 187        pmwrite(cmac, SUNI1x10GEXP_REG_GLOBAL_INTERRUPT_ENABLE, 0);
 188
 189        /* ELMER - External chip interrupts. */
 190        t1_tpi_read(cmac->adapter, A_ELMER0_INT_ENABLE, &elmer);
 191        elmer &= ~ELMER0_GP_BIT1;
 192        t1_tpi_write(cmac->adapter, A_ELMER0_INT_ENABLE, elmer);
 193
 194        /* TERMINATOR - PL_INTERUPTS_EXT */
 195        /* DO NOT DISABLE TERMINATOR's EXTERNAL INTERRUPTS. ANOTHER CHIP
 196         * COULD WANT THEM ENABLED. We disable PM3393 at the ELMER level.
 197         */
 198
 199        return 0;
 200}
 201
 202static int pm3393_interrupt_clear(struct cmac *cmac)
 203{
 204        u32 elmer;
 205        u32 pl_intr;
 206        u32 val32;
 207
 208        /* PM3393 - Clearing HW interrupt blocks. Note, this assumes
 209         *          bit WCIMODE=0 for a clear-on-read.
 210         */
 211        pmread(cmac, SUNI1x10GEXP_REG_SERDES_3125_INTERRUPT_STATUS, &val32);
 212        pmread(cmac, SUNI1x10GEXP_REG_XRF_INTERRUPT_STATUS, &val32);
 213        pmread(cmac, SUNI1x10GEXP_REG_XRF_DIAG_INTERRUPT_STATUS, &val32);
 214        pmread(cmac, SUNI1x10GEXP_REG_RXOAM_INTERRUPT_STATUS, &val32);
 215        pmread(cmac, SUNI1x10GEXP_REG_PL4ODP_INTERRUPT, &val32);
 216        pmread(cmac, SUNI1x10GEXP_REG_XTEF_INTERRUPT_STATUS, &val32);
 217        pmread(cmac, SUNI1x10GEXP_REG_IFLX_FIFO_OVERFLOW_INTERRUPT, &val32);
 218        pmread(cmac, SUNI1x10GEXP_REG_TXOAM_INTERRUPT_STATUS, &val32);
 219        pmread(cmac, SUNI1x10GEXP_REG_RXXG_INTERRUPT, &val32);
 220        pmread(cmac, SUNI1x10GEXP_REG_TXXG_INTERRUPT, &val32);
 221        pmread(cmac, SUNI1x10GEXP_REG_PL4IDU_INTERRUPT, &val32);
 222        pmread(cmac, SUNI1x10GEXP_REG_EFLX_FIFO_OVERFLOW_ERROR_INDICATION,
 223               &val32);
 224        pmread(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_STATUS, &val32);
 225        pmread(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_CHANGE, &val32);
 226
 227        /* PM3393 - Global interrupt status
 228         */
 229        pmread(cmac, SUNI1x10GEXP_REG_MASTER_INTERRUPT_STATUS, &val32);
 230
 231        /* ELMER - External chip interrupts.
 232         */
 233        t1_tpi_read(cmac->adapter, A_ELMER0_INT_CAUSE, &elmer);
 234        elmer |= ELMER0_GP_BIT1;
 235        t1_tpi_write(cmac->adapter, A_ELMER0_INT_CAUSE, elmer);
 236
 237        /* TERMINATOR - PL_INTERUPTS_EXT
 238         */
 239        pl_intr = readl(cmac->adapter->regs + A_PL_CAUSE);
 240        pl_intr |= F_PL_INTR_EXT;
 241        writel(pl_intr, cmac->adapter->regs + A_PL_CAUSE);
 242
 243        return 0;
 244}
 245
 246/* Interrupt handler */
 247static int pm3393_interrupt_handler(struct cmac *cmac)
 248{
 249        u32 master_intr_status;
 250
 251        /* Read the master interrupt status register. */
 252        pmread(cmac, SUNI1x10GEXP_REG_MASTER_INTERRUPT_STATUS,
 253               &master_intr_status);
 254        if (netif_msg_intr(cmac->adapter))
 255                dev_dbg(&cmac->adapter->pdev->dev, "PM3393 intr cause 0x%x\n",
 256                        master_intr_status);
 257
 258        /* TBD XXX Lets just clear everything for now */
 259        pm3393_interrupt_clear(cmac);
 260
 261        return 0;
 262}
 263
 264static int pm3393_enable(struct cmac *cmac, int which)
 265{
 266        if (which & MAC_DIRECTION_RX)
 267                pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_1,
 268                        (RXXG_CONF1_VAL | SUNI1x10GEXP_BITMSK_RXXG_RXEN));
 269
 270        if (which & MAC_DIRECTION_TX) {
 271                u32 val = TXXG_CONF1_VAL | SUNI1x10GEXP_BITMSK_TXXG_TXEN0;
 272
 273                if (cmac->instance->fc & PAUSE_RX)
 274                        val |= SUNI1x10GEXP_BITMSK_TXXG_FCRX;
 275                if (cmac->instance->fc & PAUSE_TX)
 276                        val |= SUNI1x10GEXP_BITMSK_TXXG_FCTX;
 277                pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_1, val);
 278        }
 279
 280        cmac->instance->enabled |= which;
 281        return 0;
 282}
 283
 284static int pm3393_enable_port(struct cmac *cmac, int which)
 285{
 286        /* Clear port statistics */
 287        pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_CONTROL,
 288                SUNI1x10GEXP_BITMSK_MSTAT_CLEAR);
 289        udelay(2);
 290        memset(&cmac->stats, 0, sizeof(struct cmac_statistics));
 291
 292        pm3393_enable(cmac, which);
 293
 294        /*
 295         * XXX This should be done by the PHY and preferably not at all.
 296         * The PHY doesn't give us link status indication on its own so have
 297         * the link management code query it instead.
 298         */
 299        t1_link_changed(cmac->adapter, 0);
 300        return 0;
 301}
 302
 303static int pm3393_disable(struct cmac *cmac, int which)
 304{
 305        if (which & MAC_DIRECTION_RX)
 306                pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_1, RXXG_CONF1_VAL);
 307        if (which & MAC_DIRECTION_TX)
 308                pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_1, TXXG_CONF1_VAL);
 309
 310        /*
 311         * The disable is graceful. Give the PM3393 time.  Can't wait very
 312         * long here, we may be holding locks.
 313         */
 314        udelay(20);
 315
 316        cmac->instance->enabled &= ~which;
 317        return 0;
 318}
 319
 320static int pm3393_loopback_enable(struct cmac *cmac)
 321{
 322        return 0;
 323}
 324
 325static int pm3393_loopback_disable(struct cmac *cmac)
 326{
 327        return 0;
 328}
 329
 330static int pm3393_set_mtu(struct cmac *cmac, int mtu)
 331{
 332        int enabled = cmac->instance->enabled;
 333
 334        /* MAX_FRAME_SIZE includes header + FCS, mtu doesn't */
 335        mtu += 14 + 4;
 336        if (mtu > MAX_FRAME_SIZE)
 337                return -EINVAL;
 338
 339        /* Disable Rx/Tx MAC before configuring it. */
 340        if (enabled)
 341                pm3393_disable(cmac, MAC_DIRECTION_RX | MAC_DIRECTION_TX);
 342
 343        pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MAX_FRAME_LENGTH, mtu);
 344        pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_MAX_FRAME_SIZE, mtu);
 345
 346        if (enabled)
 347                pm3393_enable(cmac, enabled);
 348        return 0;
 349}
 350
 351static int pm3393_set_rx_mode(struct cmac *cmac, struct t1_rx_mode *rm)
 352{
 353        int enabled = cmac->instance->enabled & MAC_DIRECTION_RX;
 354        u32 rx_mode;
 355
 356        /* Disable MAC RX before reconfiguring it */
 357        if (enabled)
 358                pm3393_disable(cmac, MAC_DIRECTION_RX);
 359
 360        pmread(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_2, &rx_mode);
 361        rx_mode &= ~(SUNI1x10GEXP_BITMSK_RXXG_PMODE |
 362                     SUNI1x10GEXP_BITMSK_RXXG_MHASH_EN);
 363        pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_2,
 364                (u16)rx_mode);
 365
 366        if (t1_rx_mode_promisc(rm)) {
 367                /* Promiscuous mode. */
 368                rx_mode |= SUNI1x10GEXP_BITMSK_RXXG_PMODE;
 369        }
 370        if (t1_rx_mode_allmulti(rm)) {
 371                /* Accept all multicast. */
 372                pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_LOW, 0xffff);
 373                pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDLOW, 0xffff);
 374                pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDHIGH, 0xffff);
 375                pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_HIGH, 0xffff);
 376                rx_mode |= SUNI1x10GEXP_BITMSK_RXXG_MHASH_EN;
 377        } else if (t1_rx_mode_mc_cnt(rm)) {
 378                /* Accept one or more multicast(s). */
 379                struct netdev_hw_addr *ha;
 380                int bit;
 381                u16 mc_filter[4] = { 0, };
 382
 383                netdev_for_each_mc_addr(ha, t1_get_netdev(rm)) {
 384                        /* bit[23:28] */
 385                        bit = (ether_crc(ETH_ALEN, ha->addr) >> 23) & 0x3f;
 386                        mc_filter[bit >> 4] |= 1 << (bit & 0xf);
 387                }
 388                pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_LOW, mc_filter[0]);
 389                pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDLOW, mc_filter[1]);
 390                pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDHIGH, mc_filter[2]);
 391                pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_HIGH, mc_filter[3]);
 392                rx_mode |= SUNI1x10GEXP_BITMSK_RXXG_MHASH_EN;
 393        }
 394
 395        pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_2, (u16)rx_mode);
 396
 397        if (enabled)
 398                pm3393_enable(cmac, MAC_DIRECTION_RX);
 399
 400        return 0;
 401}
 402
 403static int pm3393_get_speed_duplex_fc(struct cmac *cmac, int *speed,
 404                                      int *duplex, int *fc)
 405{
 406        if (speed)
 407                *speed = SPEED_10000;
 408        if (duplex)
 409                *duplex = DUPLEX_FULL;
 410        if (fc)
 411                *fc = cmac->instance->fc;
 412        return 0;
 413}
 414
 415static int pm3393_set_speed_duplex_fc(struct cmac *cmac, int speed, int duplex,
 416                                      int fc)
 417{
 418        if (speed >= 0 && speed != SPEED_10000)
 419                return -1;
 420        if (duplex >= 0 && duplex != DUPLEX_FULL)
 421                return -1;
 422        if (fc & ~(PAUSE_TX | PAUSE_RX))
 423                return -1;
 424
 425        if (fc != cmac->instance->fc) {
 426                cmac->instance->fc = (u8) fc;
 427                if (cmac->instance->enabled & MAC_DIRECTION_TX)
 428                        pm3393_enable(cmac, MAC_DIRECTION_TX);
 429        }
 430        return 0;
 431}
 432
 433#define RMON_UPDATE(mac, name, stat_name) \
 434{ \
 435        t1_tpi_read((mac)->adapter, OFFSET(name), &val0);     \
 436        t1_tpi_read((mac)->adapter, OFFSET((name)+1), &val1); \
 437        t1_tpi_read((mac)->adapter, OFFSET((name)+2), &val2); \
 438        (mac)->stats.stat_name = (u64)(val0 & 0xffff) | \
 439                                 ((u64)(val1 & 0xffff) << 16) | \
 440                                 ((u64)(val2 & 0xff) << 32) | \
 441                                 ((mac)->stats.stat_name & \
 442                                        0xffffff0000000000ULL); \
 443        if (ro & \
 444            (1ULL << ((name - SUNI1x10GEXP_REG_MSTAT_COUNTER_0_LOW) >> 2))) \
 445                (mac)->stats.stat_name += 1ULL << 40; \
 446}
 447
 448static const struct cmac_statistics *pm3393_update_statistics(struct cmac *mac,
 449                                                              int flag)
 450{
 451        u64     ro;
 452        u32     val0, val1, val2, val3;
 453
 454        /* Snap the counters */
 455        pmwrite(mac, SUNI1x10GEXP_REG_MSTAT_CONTROL,
 456                SUNI1x10GEXP_BITMSK_MSTAT_SNAP);
 457
 458        /* Counter rollover, clear on read */
 459        pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_0, &val0);
 460        pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_1, &val1);
 461        pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_2, &val2);
 462        pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_3, &val3);
 463        ro = ((u64)val0 & 0xffff) | (((u64)val1 & 0xffff) << 16) |
 464                (((u64)val2 & 0xffff) << 32) | (((u64)val3 & 0xffff) << 48);
 465
 466        /* Rx stats */
 467        RMON_UPDATE(mac, RxOctetsReceivedOK, RxOctetsOK);
 468        RMON_UPDATE(mac, RxUnicastFramesReceivedOK, RxUnicastFramesOK);
 469        RMON_UPDATE(mac, RxMulticastFramesReceivedOK, RxMulticastFramesOK);
 470        RMON_UPDATE(mac, RxBroadcastFramesReceivedOK, RxBroadcastFramesOK);
 471        RMON_UPDATE(mac, RxPAUSEMACCtrlFramesReceived, RxPauseFrames);
 472        RMON_UPDATE(mac, RxFrameCheckSequenceErrors, RxFCSErrors);
 473        RMON_UPDATE(mac, RxFramesLostDueToInternalMACErrors,
 474                                RxInternalMACRcvError);
 475        RMON_UPDATE(mac, RxSymbolErrors, RxSymbolErrors);
 476        RMON_UPDATE(mac, RxInRangeLengthErrors, RxInRangeLengthErrors);
 477        RMON_UPDATE(mac, RxFramesTooLongErrors , RxFrameTooLongErrors);
 478        RMON_UPDATE(mac, RxJabbers, RxJabberErrors);
 479        RMON_UPDATE(mac, RxFragments, RxRuntErrors);
 480        RMON_UPDATE(mac, RxUndersizedFrames, RxRuntErrors);
 481        RMON_UPDATE(mac, RxJumboFramesReceivedOK, RxJumboFramesOK);
 482        RMON_UPDATE(mac, RxJumboOctetsReceivedOK, RxJumboOctetsOK);
 483
 484        /* Tx stats */
 485        RMON_UPDATE(mac, TxOctetsTransmittedOK, TxOctetsOK);
 486        RMON_UPDATE(mac, TxFramesLostDueToInternalMACTransmissionError,
 487                                TxInternalMACXmitError);
 488        RMON_UPDATE(mac, TxTransmitSystemError, TxFCSErrors);
 489        RMON_UPDATE(mac, TxUnicastFramesTransmittedOK, TxUnicastFramesOK);
 490        RMON_UPDATE(mac, TxMulticastFramesTransmittedOK, TxMulticastFramesOK);
 491        RMON_UPDATE(mac, TxBroadcastFramesTransmittedOK, TxBroadcastFramesOK);
 492        RMON_UPDATE(mac, TxPAUSEMACCtrlFramesTransmitted, TxPauseFrames);
 493        RMON_UPDATE(mac, TxJumboFramesReceivedOK, TxJumboFramesOK);
 494        RMON_UPDATE(mac, TxJumboOctetsReceivedOK, TxJumboOctetsOK);
 495
 496        return &mac->stats;
 497}
 498
 499static int pm3393_macaddress_get(struct cmac *cmac, u8 mac_addr[6])
 500{
 501        memcpy(mac_addr, cmac->instance->mac_addr, ETH_ALEN);
 502        return 0;
 503}
 504
 505static int pm3393_macaddress_set(struct cmac *cmac, u8 ma[6])
 506{
 507        u32 val, lo, mid, hi, enabled = cmac->instance->enabled;
 508
 509        /*
 510         * MAC addr: 00:07:43:00:13:09
 511         *
 512         * ma[5] = 0x09
 513         * ma[4] = 0x13
 514         * ma[3] = 0x00
 515         * ma[2] = 0x43
 516         * ma[1] = 0x07
 517         * ma[0] = 0x00
 518         *
 519         * The PM3393 requires byte swapping and reverse order entry
 520         * when programming MAC addresses:
 521         *
 522         * low_bits[15:0]    = ma[1]:ma[0]
 523         * mid_bits[31:16]   = ma[3]:ma[2]
 524         * high_bits[47:32]  = ma[5]:ma[4]
 525         */
 526
 527        /* Store local copy */
 528        memcpy(cmac->instance->mac_addr, ma, ETH_ALEN);
 529
 530        lo  = ((u32) ma[1] << 8) | (u32) ma[0];
 531        mid = ((u32) ma[3] << 8) | (u32) ma[2];
 532        hi  = ((u32) ma[5] << 8) | (u32) ma[4];
 533
 534        /* Disable Rx/Tx MAC before configuring it. */
 535        if (enabled)
 536                pm3393_disable(cmac, MAC_DIRECTION_RX | MAC_DIRECTION_TX);
 537
 538        /* Set RXXG Station Address */
 539        pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_SA_15_0, lo);
 540        pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_SA_31_16, mid);
 541        pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_SA_47_32, hi);
 542
 543        /* Set TXXG Station Address */
 544        pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_SA_15_0, lo);
 545        pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_SA_31_16, mid);
 546        pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_SA_47_32, hi);
 547
 548        /* Setup Exact Match Filter 1 with our MAC address
 549         *
 550         * Must disable exact match filter before configuring it.
 551         */
 552        pmread(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_0, &val);
 553        val &= 0xff0f;
 554        pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_0, val);
 555
 556        pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_EXACT_MATCH_ADDR_1_LOW, lo);
 557        pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_EXACT_MATCH_ADDR_1_MID, mid);
 558        pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_EXACT_MATCH_ADDR_1_HIGH, hi);
 559
 560        val |= 0x0090;
 561        pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_0, val);
 562
 563        if (enabled)
 564                pm3393_enable(cmac, enabled);
 565        return 0;
 566}
 567
 568static void pm3393_destroy(struct cmac *cmac)
 569{
 570        kfree(cmac);
 571}
 572
 573static struct cmac_ops pm3393_ops = {
 574        .destroy                 = pm3393_destroy,
 575        .reset                   = pm3393_reset,
 576        .interrupt_enable        = pm3393_interrupt_enable,
 577        .interrupt_disable       = pm3393_interrupt_disable,
 578        .interrupt_clear         = pm3393_interrupt_clear,
 579        .interrupt_handler       = pm3393_interrupt_handler,
 580        .enable                  = pm3393_enable_port,
 581        .disable                 = pm3393_disable,
 582        .loopback_enable         = pm3393_loopback_enable,
 583        .loopback_disable        = pm3393_loopback_disable,
 584        .set_mtu                 = pm3393_set_mtu,
 585        .set_rx_mode             = pm3393_set_rx_mode,
 586        .get_speed_duplex_fc     = pm3393_get_speed_duplex_fc,
 587        .set_speed_duplex_fc     = pm3393_set_speed_duplex_fc,
 588        .statistics_update       = pm3393_update_statistics,
 589        .macaddress_get          = pm3393_macaddress_get,
 590        .macaddress_set          = pm3393_macaddress_set
 591};
 592
 593static struct cmac *pm3393_mac_create(adapter_t *adapter, int index)
 594{
 595        struct cmac *cmac;
 596
 597        cmac = kzalloc(sizeof(*cmac) + sizeof(cmac_instance), GFP_KERNEL);
 598        if (!cmac)
 599                return NULL;
 600
 601        cmac->ops = &pm3393_ops;
 602        cmac->instance = (cmac_instance *) (cmac + 1);
 603        cmac->adapter = adapter;
 604        cmac->instance->fc = PAUSE_TX | PAUSE_RX;
 605
 606        t1_tpi_write(adapter, OFFSET(0x0001), 0x00008000);
 607        t1_tpi_write(adapter, OFFSET(0x0001), 0x00000000);
 608        t1_tpi_write(adapter, OFFSET(0x2308), 0x00009800);
 609        t1_tpi_write(adapter, OFFSET(0x2305), 0x00001001);   /* PL4IO Enable */
 610        t1_tpi_write(adapter, OFFSET(0x2320), 0x00008800);
 611        t1_tpi_write(adapter, OFFSET(0x2321), 0x00008800);
 612        t1_tpi_write(adapter, OFFSET(0x2322), 0x00008800);
 613        t1_tpi_write(adapter, OFFSET(0x2323), 0x00008800);
 614        t1_tpi_write(adapter, OFFSET(0x2324), 0x00008800);
 615        t1_tpi_write(adapter, OFFSET(0x2325), 0x00008800);
 616        t1_tpi_write(adapter, OFFSET(0x2326), 0x00008800);
 617        t1_tpi_write(adapter, OFFSET(0x2327), 0x00008800);
 618        t1_tpi_write(adapter, OFFSET(0x2328), 0x00008800);
 619        t1_tpi_write(adapter, OFFSET(0x2329), 0x00008800);
 620        t1_tpi_write(adapter, OFFSET(0x232a), 0x00008800);
 621        t1_tpi_write(adapter, OFFSET(0x232b), 0x00008800);
 622        t1_tpi_write(adapter, OFFSET(0x232c), 0x00008800);
 623        t1_tpi_write(adapter, OFFSET(0x232d), 0x00008800);
 624        t1_tpi_write(adapter, OFFSET(0x232e), 0x00008800);
 625        t1_tpi_write(adapter, OFFSET(0x232f), 0x00008800);
 626        t1_tpi_write(adapter, OFFSET(0x230d), 0x00009c00);
 627        t1_tpi_write(adapter, OFFSET(0x2304), 0x00000202);      /* PL4IO Calendar Repetitions */
 628
 629        t1_tpi_write(adapter, OFFSET(0x3200), 0x00008080);      /* EFLX Enable */
 630        t1_tpi_write(adapter, OFFSET(0x3210), 0x00000000);      /* EFLX Channel Deprovision */
 631        t1_tpi_write(adapter, OFFSET(0x3203), 0x00000000);      /* EFLX Low Limit */
 632        t1_tpi_write(adapter, OFFSET(0x3204), 0x00000040);      /* EFLX High Limit */
 633        t1_tpi_write(adapter, OFFSET(0x3205), 0x000002cc);      /* EFLX Almost Full */
 634        t1_tpi_write(adapter, OFFSET(0x3206), 0x00000199);      /* EFLX Almost Empty */
 635        t1_tpi_write(adapter, OFFSET(0x3207), 0x00000240);      /* EFLX Cut Through Threshold */
 636        t1_tpi_write(adapter, OFFSET(0x3202), 0x00000000);      /* EFLX Indirect Register Update */
 637        t1_tpi_write(adapter, OFFSET(0x3210), 0x00000001);      /* EFLX Channel Provision */
 638        t1_tpi_write(adapter, OFFSET(0x3208), 0x0000ffff);      /* EFLX Undocumented */
 639        t1_tpi_write(adapter, OFFSET(0x320a), 0x0000ffff);      /* EFLX Undocumented */
 640        t1_tpi_write(adapter, OFFSET(0x320c), 0x0000ffff);      /* EFLX enable overflow interrupt The other bit are undocumented */
 641        t1_tpi_write(adapter, OFFSET(0x320e), 0x0000ffff);      /* EFLX Undocumented */
 642
 643        t1_tpi_write(adapter, OFFSET(0x2200), 0x0000c000);      /* IFLX Configuration - enable */
 644        t1_tpi_write(adapter, OFFSET(0x2201), 0x00000000);      /* IFLX Channel Deprovision */
 645        t1_tpi_write(adapter, OFFSET(0x220e), 0x00000000);      /* IFLX Low Limit */
 646        t1_tpi_write(adapter, OFFSET(0x220f), 0x00000100);      /* IFLX High Limit */
 647        t1_tpi_write(adapter, OFFSET(0x2210), 0x00000c00);      /* IFLX Almost Full Limit */
 648        t1_tpi_write(adapter, OFFSET(0x2211), 0x00000599);      /* IFLX Almost Empty Limit */
 649        t1_tpi_write(adapter, OFFSET(0x220d), 0x00000000);      /* IFLX Indirect Register Update */
 650        t1_tpi_write(adapter, OFFSET(0x2201), 0x00000001);      /* IFLX Channel Provision */
 651        t1_tpi_write(adapter, OFFSET(0x2203), 0x0000ffff);      /* IFLX Undocumented */
 652        t1_tpi_write(adapter, OFFSET(0x2205), 0x0000ffff);      /* IFLX Undocumented */
 653        t1_tpi_write(adapter, OFFSET(0x2209), 0x0000ffff);      /* IFLX Enable overflow interrupt.  The other bit are undocumented */
 654
 655        t1_tpi_write(adapter, OFFSET(0x2241), 0xfffffffe);      /* PL4MOS Undocumented */
 656        t1_tpi_write(adapter, OFFSET(0x2242), 0x0000ffff);      /* PL4MOS Undocumented */
 657        t1_tpi_write(adapter, OFFSET(0x2243), 0x00000008);      /* PL4MOS Starving Burst Size */
 658        t1_tpi_write(adapter, OFFSET(0x2244), 0x00000008);      /* PL4MOS Hungry Burst Size */
 659        t1_tpi_write(adapter, OFFSET(0x2245), 0x00000008);      /* PL4MOS Transfer Size */
 660        t1_tpi_write(adapter, OFFSET(0x2240), 0x00000005);      /* PL4MOS Disable */
 661
 662        t1_tpi_write(adapter, OFFSET(0x2280), 0x00002103);      /* PL4ODP Training Repeat and SOP rule */
 663        t1_tpi_write(adapter, OFFSET(0x2284), 0x00000000);      /* PL4ODP MAX_T setting */
 664
 665        t1_tpi_write(adapter, OFFSET(0x3280), 0x00000087);      /* PL4IDU Enable data forward, port state machine. Set ALLOW_NON_ZERO_OLB */
 666        t1_tpi_write(adapter, OFFSET(0x3282), 0x0000001f);      /* PL4IDU Enable Dip4 check error interrupts */
 667
 668        t1_tpi_write(adapter, OFFSET(0x3040), 0x0c32);  /* # TXXG Config */
 669        /* For T1 use timer based Mac flow control. */
 670        t1_tpi_write(adapter, OFFSET(0x304d), 0x8000);
 671        t1_tpi_write(adapter, OFFSET(0x2040), 0x059c);  /* # RXXG Config */
 672        t1_tpi_write(adapter, OFFSET(0x2049), 0x0001);  /* # RXXG Cut Through */
 673        t1_tpi_write(adapter, OFFSET(0x2070), 0x0000);  /* # Disable promiscuous mode */
 674
 675        /* Setup Exact Match Filter 0 to allow broadcast packets.
 676         */
 677        t1_tpi_write(adapter, OFFSET(0x206e), 0x0000);  /* # Disable Match Enable bit */
 678        t1_tpi_write(adapter, OFFSET(0x204a), 0xffff);  /* # low addr */
 679        t1_tpi_write(adapter, OFFSET(0x204b), 0xffff);  /* # mid addr */
 680        t1_tpi_write(adapter, OFFSET(0x204c), 0xffff);  /* # high addr */
 681        t1_tpi_write(adapter, OFFSET(0x206e), 0x0009);  /* # Enable Match Enable bit */
 682
 683        t1_tpi_write(adapter, OFFSET(0x0003), 0x0000);  /* # NO SOP/ PAD_EN setup */
 684        t1_tpi_write(adapter, OFFSET(0x0100), 0x0ff0);  /* # RXEQB disabled */
 685        t1_tpi_write(adapter, OFFSET(0x0101), 0x0f0f);  /* # No Preemphasis */
 686
 687        return cmac;
 688}
 689
 690static int pm3393_mac_reset(adapter_t * adapter)
 691{
 692        u32 val;
 693        u32 x;
 694        u32 is_pl4_reset_finished;
 695        u32 is_pl4_outof_lock;
 696        u32 is_xaui_mabc_pll_locked;
 697        u32 successful_reset;
 698        int i;
 699
 700        /* The following steps are required to properly reset
 701         * the PM3393. This information is provided in the
 702         * PM3393 datasheet (Issue 2: November 2002)
 703         * section 13.1 -- Device Reset.
 704         *
 705         * The PM3393 has three types of components that are
 706         * individually reset:
 707         *
 708         * DRESETB      - Digital circuitry
 709         * PL4_ARESETB  - PL4 analog circuitry
 710         * XAUI_ARESETB - XAUI bus analog circuitry
 711         *
 712         * Steps to reset PM3393 using RSTB pin:
 713         *
 714         * 1. Assert RSTB pin low ( write 0 )
 715         * 2. Wait at least 1ms to initiate a complete initialization of device.
 716         * 3. Wait until all external clocks and REFSEL are stable.
 717         * 4. Wait minimum of 1ms. (after external clocks and REFEL are stable)
 718         * 5. De-assert RSTB ( write 1 )
 719         * 6. Wait until internal timers to expires after ~14ms.
 720         *    - Allows analog clock synthesizer(PL4CSU) to stabilize to
 721         *      selected reference frequency before allowing the digital
 722         *      portion of the device to operate.
 723         * 7. Wait at least 200us for XAUI interface to stabilize.
 724         * 8. Verify the PM3393 came out of reset successfully.
 725         *    Set successful reset flag if everything worked else try again
 726         *    a few more times.
 727         */
 728
 729        successful_reset = 0;
 730        for (i = 0; i < 3 && !successful_reset; i++) {
 731                /* 1 */
 732                t1_tpi_read(adapter, A_ELMER0_GPO, &val);
 733                val &= ~1;
 734                t1_tpi_write(adapter, A_ELMER0_GPO, val);
 735
 736                /* 2 */
 737                msleep(1);
 738
 739                /* 3 */
 740                msleep(1);
 741
 742                /* 4 */
 743                msleep(2 /*1 extra ms for safety */ );
 744
 745                /* 5 */
 746                val |= 1;
 747                t1_tpi_write(adapter, A_ELMER0_GPO, val);
 748
 749                /* 6 */
 750                msleep(15 /*1 extra ms for safety */ );
 751
 752                /* 7 */
 753                msleep(1);
 754
 755                /* 8 */
 756
 757                /* Has PL4 analog block come out of reset correctly? */
 758                t1_tpi_read(adapter, OFFSET(SUNI1x10GEXP_REG_DEVICE_STATUS), &val);
 759                is_pl4_reset_finished = (val & SUNI1x10GEXP_BITMSK_TOP_EXPIRED);
 760
 761                /* TBD XXX SUNI1x10GEXP_BITMSK_TOP_PL4_IS_DOOL gets locked later in the init sequence
 762                 *         figure out why? */
 763
 764                /* Have all PL4 block clocks locked? */
 765                x = (SUNI1x10GEXP_BITMSK_TOP_PL4_ID_DOOL
 766                     /*| SUNI1x10GEXP_BITMSK_TOP_PL4_IS_DOOL */  |
 767                     SUNI1x10GEXP_BITMSK_TOP_PL4_ID_ROOL |
 768                     SUNI1x10GEXP_BITMSK_TOP_PL4_IS_ROOL |
 769                     SUNI1x10GEXP_BITMSK_TOP_PL4_OUT_ROOL);
 770                is_pl4_outof_lock = (val & x);
 771
 772                /* ??? If this fails, might be able to software reset the XAUI part
 773                 *     and try to recover... thus saving us from doing another HW reset */
 774                /* Has the XAUI MABC PLL circuitry stablized? */
 775                is_xaui_mabc_pll_locked =
 776                    (val & SUNI1x10GEXP_BITMSK_TOP_SXRA_EXPIRED);
 777
 778                successful_reset = (is_pl4_reset_finished && !is_pl4_outof_lock
 779                                    && is_xaui_mabc_pll_locked);
 780
 781                if (netif_msg_hw(adapter))
 782                        dev_dbg(&adapter->pdev->dev,
 783                                "PM3393 HW reset %d: pl4_reset 0x%x, val 0x%x, "
 784                                "is_pl4_outof_lock 0x%x, xaui_locked 0x%x\n",
 785                                i, is_pl4_reset_finished, val,
 786                                is_pl4_outof_lock, is_xaui_mabc_pll_locked);
 787        }
 788        return successful_reset ? 0 : 1;
 789}
 790
 791const struct gmac t1_pm3393_ops = {
 792        .stats_update_period = STATS_TICK_SECS,
 793        .create              = pm3393_mac_create,
 794        .reset               = pm3393_mac_reset,
 795};
 796