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

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

DEFINITIONS
