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   1
   2 /* Advanced  Micro Devices Inc. AMD8111E Linux Network Driver
   3  * Copyright (C) 2004 Advanced Micro Devices
   4  *
   5  *
   6  * Copyright 2001,2002 Jeff Garzik <jgarzik@mandrakesoft.com> [ 8139cp.c,tg3.c ]
   7  * Copyright (C) 2001, 2002 David S. Miller (davem@redhat.com)[ tg3.c]
   8  * Copyright 1996-1999 Thomas Bogendoerfer [ pcnet32.c ]
   9  * Derived from the lance driver written 1993,1994,1995 by Donald Becker.
  10  * Copyright 1993 United States Government as represented by the
  11  *      Director, National Security Agency.[ pcnet32.c ]
  12  * Carsten Langgaard, carstenl@mips.com [ pcnet32.c ]
  13  * Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
  14  *
  15  *
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 2 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  29  * USA
  30
  31 Module Name:
  32
  33         amd8111e.c
  34
  35 Abstract:
  36
  37          AMD8111 based 10/100 Ethernet Controller Driver.
  38
  39 Environment:
  40
  41         Kernel Mode
  42
  43 Revision History:
  44         3.0.0
  45            Initial Revision.
  46         3.0.1
  47          1. Dynamic interrupt coalescing.
  48          2. Removed prev_stats.
  49          3. MII support.
  50          4. Dynamic IPG support
  51         3.0.2  05/29/2003
  52          1. Bug fix: Fixed failure to send jumbo packets larger than 4k.
  53          2. Bug fix: Fixed VLAN support failure.
  54          3. Bug fix: Fixed receive interrupt coalescing bug.
  55          4. Dynamic IPG support is disabled by default.
  56         3.0.3 06/05/2003
  57          1. Bug fix: Fixed failure to close the interface if SMP is enabled.
  58         3.0.4 12/09/2003
  59          1. Added set_mac_address routine for bonding driver support.
  60          2. Tested the driver for bonding support
  61          3. Bug fix: Fixed mismach in actual receive buffer lenth and lenth
  62             indicated to the h/w.
  63          4. Modified amd8111e_rx() routine to receive all the received packets
  64             in the first interrupt.
  65          5. Bug fix: Corrected  rx_errors  reported in get_stats() function.
  66         3.0.5 03/22/2004
  67          1. Added NAPI support
  68
  69 */
  70
  71
  72 #include <linux/module.h>
  73 #include <linux/kernel.h>
  74 #include <linux/types.h>
  75 #include <linux/compiler.h>
  76 #include <linux/slab.h>
  77 #include <linux/delay.h>
  78 #include <linux/init.h>
  79 #include <linux/ioport.h>
  80 #include <linux/pci.h>
  81 #include <linux/netdevice.h>
  82 #include <linux/etherdevice.h>
  83 #include <linux/skbuff.h>
  84 #include <linux/ethtool.h>
  85 #include <linux/mii.h>
  86 #include <linux/if_vlan.h>
  87 #include <linux/ctype.h>
  88 #include <linux/crc32.h>
  89 #include <linux/dma-mapping.h>
  90
  91 #include <asm/system.h>
  92 #include <asm/io.h>
  93 #include <asm/byteorder.h>
  94 #include <asm/uaccess.h>
  95
  96 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
  97 #define AMD8111E_VLAN_TAG_USED 1
  98 #else
  99 #define AMD8111E_VLAN_TAG_USED 0
 100 #endif
 101
 102 #include "amd8111e.h"
 103 #define MODULE_NAME     "amd8111e"
 104 #define MODULE_VERS     "3.0.7"
 105 MODULE_AUTHOR("Advanced Micro Devices, Inc.");
 106 MODULE_DESCRIPTION ("AMD8111 based 10/100 Ethernet Controller. Driver Version "MODULE_VERS);
 107 MODULE_LICENSE("GPL");
 108 MODULE_DEVICE_TABLE(pci, amd8111e_pci_tbl);
 109 module_param_array(speed_duplex, int, NULL, 0);
 110 MODULE_PARM_DESC(speed_duplex, "Set device speed and duplex modes, 0: Auto Negotitate, 1: 10Mbps Half Duplex, 2: 10Mbps Full Duplex, 3: 100Mbps Half Duplex, 4: 100Mbps Full Duplex");
 111 module_param_array(coalesce, bool, NULL, 0);
 112 MODULE_PARM_DESC(coalesce, "Enable or Disable interrupt coalescing, 1: Enable, 0: Disable");
 113 module_param_array(dynamic_ipg, bool, NULL, 0);
 114 MODULE_PARM_DESC(dynamic_ipg, "Enable or Disable dynamic IPG, 1: Enable, 0: Disable");
 115
 116 static struct pci_device_id amd8111e_pci_tbl[] = {
 117
 118         { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD8111E_7462,
 119          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
 120         { 0, }
 121
 122 };
 123 /*
 124 This function will read the PHY registers.
 125 */
 126 static int amd8111e_read_phy(struct amd8111e_priv* lp, int phy_id, int reg, u32* val)
 127 {
 128         void __iomem *mmio = lp->mmio;
 129         unsigned int reg_val;
 130         unsigned int repeat= REPEAT_CNT;
 131
 132         reg_val = readl(mmio + PHY_ACCESS);
 133         while (reg_val & PHY_CMD_ACTIVE)
 134                 reg_val = readl( mmio + PHY_ACCESS );
 135
 136         writel( PHY_RD_CMD | ((phy_id & 0x1f) << 21) |
 137                            ((reg & 0x1f) << 16),  mmio +PHY_ACCESS);
 138         do{
 139                 reg_val = readl(mmio + PHY_ACCESS);
 140                 udelay(30);  /* It takes 30 us to read/write data */
 141         } while (--repeat && (reg_val & PHY_CMD_ACTIVE));
 142         if(reg_val & PHY_RD_ERR)
 143                 goto err_phy_read;
 144
 145         *val = reg_val & 0xffff;
 146         return 0;
 147 err_phy_read:
 148         *val = 0;
 149         return -EINVAL;
 150
 151 }
 152
 153 /*
 154 This function will write into PHY registers.
 155 */
 156 static int amd8111e_write_phy(struct amd8111e_priv* lp,int phy_id, int reg, u32 val)
 157 {
 158         unsigned int repeat = REPEAT_CNT;
 159         void __iomem *mmio = lp->mmio;
 160         unsigned int reg_val;
 161
 162         reg_val = readl(mmio + PHY_ACCESS);
 163         while (reg_val & PHY_CMD_ACTIVE)
 164                 reg_val = readl( mmio + PHY_ACCESS );
 165
 166         writel( PHY_WR_CMD | ((phy_id & 0x1f) << 21) |
 167                            ((reg & 0x1f) << 16)|val, mmio + PHY_ACCESS);
 168
 169         do{
 170                 reg_val = readl(mmio + PHY_ACCESS);
 171                 udelay(30);  /* It takes 30 us to read/write the data */
 172         } while (--repeat && (reg_val & PHY_CMD_ACTIVE));
 173
 174         if(reg_val & PHY_RD_ERR)
 175                 goto err_phy_write;
 176
 177         return 0;
 178
 179 err_phy_write:
 180         return -EINVAL;
 181
 182 }
 183 /*
 184 This is the mii register read function provided to the mii interface.
 185 */
 186 static int amd8111e_mdio_read(struct net_device * dev, int phy_id, int reg_num)
 187 {
 188         struct amd8111e_priv* lp = netdev_priv(dev);
 189         unsigned int reg_val;
 190
 191         amd8111e_read_phy(lp,phy_id,reg_num,&reg_val);
 192         return reg_val;
 193
 194 }
 195
 196 /*
 197 This is the mii register write function provided to the mii interface.
 198 */
 199 static void amd8111e_mdio_write(struct net_device * dev, int phy_id, int reg_num, int val)
 200 {
 201         struct amd8111e_priv* lp = netdev_priv(dev);
 202
 203         amd8111e_write_phy(lp, phy_id, reg_num, val);
 204 }
 205
 206 /*
 207 This function will set PHY speed. During initialization sets the original speed to 100 full.
 208 */
 209 static void amd8111e_set_ext_phy(struct net_device *dev)
 210 {
 211         struct amd8111e_priv *lp = netdev_priv(dev);
 212         u32 bmcr,advert,tmp;
 213
 214         /* Determine mii register values to set the speed */
 215         advert = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_ADVERTISE);
 216         tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
 217         switch (lp->ext_phy_option){
 218
 219                 default:
 220                 case SPEED_AUTONEG: /* advertise all values */
 221                         tmp |= ( ADVERTISE_10HALF|ADVERTISE_10FULL|
 222                                 ADVERTISE_100HALF|ADVERTISE_100FULL) ;
 223                         break;
 224                 case SPEED10_HALF:
 225                         tmp |= ADVERTISE_10HALF;
 226                         break;
 227                 case SPEED10_FULL:
 228                         tmp |= ADVERTISE_10FULL;
 229                         break;
 230                 case SPEED100_HALF:
 231                         tmp |= ADVERTISE_100HALF;
 232                         break;
 233                 case SPEED100_FULL:
 234                         tmp |= ADVERTISE_100FULL;
 235                         break;
 236         }
 237
 238         if(advert != tmp)
 239                 amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_ADVERTISE, tmp);
 240         /* Restart auto negotiation */
 241         bmcr = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_BMCR);
 242         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
 243         amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_BMCR, bmcr);
 244
 245 }
 246
 247 /*
 248 This function will unmap skb->data space and will free
 249 all transmit and receive skbuffs.
 250 */
 251 static int amd8111e_free_skbs(struct net_device *dev)
 252 {
 253         struct amd8111e_priv *lp = netdev_priv(dev);
 254         struct sk_buff* rx_skbuff;
 255         int i;
 256
 257         /* Freeing transmit skbs */
 258         for(i = 0; i < NUM_TX_BUFFERS; i++){
 259                 if(lp->tx_skbuff[i]){
 260                         pci_unmap_single(lp->pci_dev,lp->tx_dma_addr[i],                                        lp->tx_skbuff[i]->len,PCI_DMA_TODEVICE);
 261                         dev_kfree_skb (lp->tx_skbuff[i]);
 262                         lp->tx_skbuff[i] = NULL;
 263                         lp->tx_dma_addr[i] = 0;
 264                 }
 265         }
 266         /* Freeing previously allocated receive buffers */
 267         for (i = 0; i < NUM_RX_BUFFERS; i++){
 268                 rx_skbuff = lp->rx_skbuff[i];
 269                 if(rx_skbuff != NULL){
 270                         pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[i],
 271                                   lp->rx_buff_len - 2,PCI_DMA_FROMDEVICE);
 272                         dev_kfree_skb(lp->rx_skbuff[i]);
 273                         lp->rx_skbuff[i] = NULL;
 274                         lp->rx_dma_addr[i] = 0;
 275                 }
 276         }
 277
 278         return 0;
 279 }
 280
 281 /*
 282 This will set the receive buffer length corresponding to the mtu size of networkinterface.
 283 */
 284 static inline void amd8111e_set_rx_buff_len(struct net_device* dev)
 285 {
 286         struct amd8111e_priv* lp = netdev_priv(dev);
 287         unsigned int mtu = dev->mtu;
 288
 289         if (mtu > ETH_DATA_LEN){
 290                 /* MTU + ethernet header + FCS
 291                 + optional VLAN tag + skb reserve space 2 */
 292
 293                 lp->rx_buff_len = mtu + ETH_HLEN + 10;
 294                 lp->options |= OPTION_JUMBO_ENABLE;
 295         } else{
 296                 lp->rx_buff_len = PKT_BUFF_SZ;
 297                 lp->options &= ~OPTION_JUMBO_ENABLE;
 298         }
 299 }
 300
 301 /*
 302 This function will free all the previously allocated buffers, determine new receive buffer length  and will allocate new receive buffers. This function also allocates and initializes both the transmitter and receive hardware descriptors.
 303  */
 304 static int amd8111e_init_ring(struct net_device *dev)
 305 {
 306         struct amd8111e_priv *lp = netdev_priv(dev);
 307         int i;
 308
 309         lp->rx_idx = lp->tx_idx = 0;
 310         lp->tx_complete_idx = 0;
 311         lp->tx_ring_idx = 0;
 312
 313
 314         if(lp->opened)
 315                 /* Free previously allocated transmit and receive skbs */
 316                 amd8111e_free_skbs(dev);
 317
 318         else{
 319                  /* allocate the tx and rx descriptors */
 320                 if((lp->tx_ring = pci_alloc_consistent(lp->pci_dev,
 321                         sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR,
 322                         &lp->tx_ring_dma_addr)) == NULL)
 323
 324                         goto err_no_mem;
 325
 326                 if((lp->rx_ring = pci_alloc_consistent(lp->pci_dev,
 327                         sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR,
 328                         &lp->rx_ring_dma_addr)) == NULL)
 329
 330                         goto err_free_tx_ring;
 331
 332         }
 333         /* Set new receive buff size */
 334         amd8111e_set_rx_buff_len(dev);
 335
 336         /* Allocating receive  skbs */
 337         for (i = 0; i < NUM_RX_BUFFERS; i++) {
 338
 339                 if (!(lp->rx_skbuff[i] = dev_alloc_skb(lp->rx_buff_len))) {
 340                                 /* Release previos allocated skbs */
 341                                 for(--i; i >= 0 ;i--)
 342                                         dev_kfree_skb(lp->rx_skbuff[i]);
 343                                 goto err_free_rx_ring;
 344                 }
 345                 skb_reserve(lp->rx_skbuff[i],2);
 346         }
 347         /* Initilaizing receive descriptors */
 348         for (i = 0; i < NUM_RX_BUFFERS; i++) {
 349                 lp->rx_dma_addr[i] = pci_map_single(lp->pci_dev,
 350                         lp->rx_skbuff[i]->data,lp->rx_buff_len-2, PCI_DMA_FROMDEVICE);
 351
 352                 lp->rx_ring[i].buff_phy_addr = cpu_to_le32(lp->rx_dma_addr[i]);
 353                 lp->rx_ring[i].buff_count = cpu_to_le16(lp->rx_buff_len-2);
 354                 wmb();
 355                 lp->rx_ring[i].rx_flags = cpu_to_le16(OWN_BIT);
 356         }
 357
 358         /* Initializing transmit descriptors */
 359         for (i = 0; i < NUM_TX_RING_DR; i++) {
 360                 lp->tx_ring[i].buff_phy_addr = 0;
 361                 lp->tx_ring[i].tx_flags = 0;
 362                 lp->tx_ring[i].buff_count = 0;
 363         }
 364
 365         return 0;
 366
 367 err_free_rx_ring:
 368
 369         pci_free_consistent(lp->pci_dev,
 370                 sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR,lp->rx_ring,
 371                 lp->rx_ring_dma_addr);
 372
 373 err_free_tx_ring:
 374
 375         pci_free_consistent(lp->pci_dev,
 376                  sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR,lp->tx_ring,
 377                  lp->tx_ring_dma_addr);
 378
 379 err_no_mem:
 380         return -ENOMEM;
 381 }
 382 /* This function will set the interrupt coalescing according to the input arguments */
 383 static int amd8111e_set_coalesce(struct net_device * dev, enum coal_mode cmod)
 384 {
 385         unsigned int timeout;
 386         unsigned int event_count;
 387
 388         struct amd8111e_priv *lp = netdev_priv(dev);
 389         void __iomem *mmio = lp->mmio;
 390         struct amd8111e_coalesce_conf * coal_conf = &lp->coal_conf;
 391
 392
 393         switch(cmod)
 394         {
 395                 case RX_INTR_COAL :
 396                         timeout = coal_conf->rx_timeout;
 397                         event_count = coal_conf->rx_event_count;
 398                         if( timeout > MAX_TIMEOUT ||
 399                                         event_count > MAX_EVENT_COUNT )
 400                         return -EINVAL;
 401
 402                         timeout = timeout * DELAY_TIMER_CONV;
 403                         writel(VAL0|STINTEN, mmio+INTEN0);
 404                         writel((u32)DLY_INT_A_R0|( event_count<< 16 )|timeout,
 405                                                         mmio+DLY_INT_A);
 406                         break;
 407
 408                 case TX_INTR_COAL :
 409                         timeout = coal_conf->tx_timeout;
 410                         event_count = coal_conf->tx_event_count;
 411                         if( timeout > MAX_TIMEOUT ||
 412                                         event_count > MAX_EVENT_COUNT )
 413                         return -EINVAL;
 414
 415
 416                         timeout = timeout * DELAY_TIMER_CONV;
 417                         writel(VAL0|STINTEN,mmio+INTEN0);
 418                         writel((u32)DLY_INT_B_T0|( event_count<< 16 )|timeout,
 419                                                          mmio+DLY_INT_B);
 420                         break;
 421
 422                 case DISABLE_COAL:
 423                         writel(0,mmio+STVAL);
 424                         writel(STINTEN, mmio+INTEN0);
 425                         writel(0, mmio +DLY_INT_B);
 426                         writel(0, mmio+DLY_INT_A);
 427                         break;
 428                  case ENABLE_COAL:
 429                        /* Start the timer */
 430                         writel((u32)SOFT_TIMER_FREQ, mmio+STVAL); /*  0.5 sec */
 431                         writel(VAL0|STINTEN, mmio+INTEN0);
 432                         break;
 433                 default:
 434                         break;
 435
 436    }
 437         return 0;
 438
 439 }
 440
 441 /*
 442 This function initializes the device registers  and starts the device.
 443 */
 444 static int amd8111e_restart(struct net_device *dev)
 445 {
 446         struct amd8111e_priv *lp = netdev_priv(dev);
 447         void __iomem *mmio = lp->mmio;
 448         int i,reg_val;
 449
 450         /* stop the chip */
 451          writel(RUN, mmio + CMD0);
 452
 453         if(amd8111e_init_ring(dev))
 454                 return -ENOMEM;
 455
 456         /* enable the port manager and set auto negotiation always */
 457         writel((u32) VAL1|EN_PMGR, mmio + CMD3 );
 458         writel((u32)XPHYANE|XPHYRST , mmio + CTRL2);
 459
 460         amd8111e_set_ext_phy(dev);
 461
 462         /* set control registers */
 463         reg_val = readl(mmio + CTRL1);
 464         reg_val &= ~XMTSP_MASK;
 465         writel( reg_val| XMTSP_128 | CACHE_ALIGN, mmio + CTRL1 );
 466
 467         /* enable interrupt */
 468         writel( APINT5EN | APINT4EN | APINT3EN | APINT2EN | APINT1EN |
 469                 APINT0EN | MIIPDTINTEN | MCCIINTEN | MCCINTEN | MREINTEN |
 470                 SPNDINTEN | MPINTEN | SINTEN | STINTEN, mmio + INTEN0);
 471
 472         writel(VAL3 | LCINTEN | VAL1 | TINTEN0 | VAL0 | RINTEN0, mmio + INTEN0);
 473
 474         /* initialize tx and rx ring base addresses */
 475         writel((u32)lp->tx_ring_dma_addr,mmio + XMT_RING_BASE_ADDR0);
 476         writel((u32)lp->rx_ring_dma_addr,mmio+ RCV_RING_BASE_ADDR0);
 477
 478         writew((u32)NUM_TX_RING_DR, mmio + XMT_RING_LEN0);
 479         writew((u16)NUM_RX_RING_DR, mmio + RCV_RING_LEN0);
 480
 481         /* set default IPG to 96 */
 482         writew((u32)DEFAULT_IPG,mmio+IPG);
 483         writew((u32)(DEFAULT_IPG-IFS1_DELTA), mmio + IFS1);
 484
 485         if(lp->options & OPTION_JUMBO_ENABLE){
 486                 writel((u32)VAL2|JUMBO, mmio + CMD3);
 487                 /* Reset REX_UFLO */
 488                 writel( REX_UFLO, mmio + CMD2);
 489                 /* Should not set REX_UFLO for jumbo frames */
 490                 writel( VAL0 | APAD_XMT|REX_RTRY , mmio + CMD2);
 491         }else{
 492                 writel( VAL0 | APAD_XMT | REX_RTRY|REX_UFLO, mmio + CMD2);
 493                 writel((u32)JUMBO, mmio + CMD3);
 494         }
 495
 496 #if AMD8111E_VLAN_TAG_USED
 497         writel((u32) VAL2|VSIZE|VL_TAG_DEL, mmio + CMD3);
 498 #endif
 499         writel( VAL0 | APAD_XMT | REX_RTRY, mmio + CMD2 );
 500
 501         /* Setting the MAC address to the device */
 502         for(i = 0; i < ETH_ADDR_LEN; i++)
 503                 writeb( dev->dev_addr[i], mmio + PADR + i );
 504
 505         /* Enable interrupt coalesce */
 506         if(lp->options & OPTION_INTR_COAL_ENABLE){
 507                 printk(KERN_INFO "%s: Interrupt Coalescing Enabled.\n",
 508                                                                 dev->name);
 509                 amd8111e_set_coalesce(dev,ENABLE_COAL);
 510         }
 511
 512         /* set RUN bit to start the chip */
 513         writel(VAL2 | RDMD0, mmio + CMD0);
 514         writel(VAL0 | INTREN | RUN, mmio + CMD0);
 515
 516         /* To avoid PCI posting bug */
 517         readl(mmio+CMD0);
 518         return 0;
 519 }
 520 /*
 521 This function clears necessary the device registers.
 522 */
 523 static void amd8111e_init_hw_default( struct amd8111e_priv* lp)
 524 {
 525         unsigned int reg_val;
 526         unsigned int logic_filter[2] ={0,};
 527         void __iomem *mmio = lp->mmio;
 528
 529
 530         /* stop the chip */
 531         writel(RUN, mmio + CMD0);
 532
 533         /* AUTOPOLL0 Register *//*TBD default value is 8100 in FPS */
 534         writew( 0x8100 | lp->ext_phy_addr, mmio + AUTOPOLL0);
 535
 536         /* Clear RCV_RING_BASE_ADDR */
 537         writel(0, mmio + RCV_RING_BASE_ADDR0);
 538
 539         /* Clear XMT_RING_BASE_ADDR */
 540         writel(0, mmio + XMT_RING_BASE_ADDR0);
 541         writel(0, mmio + XMT_RING_BASE_ADDR1);
 542         writel(0, mmio + XMT_RING_BASE_ADDR2);
 543         writel(0, mmio + XMT_RING_BASE_ADDR3);
 544
 545         /* Clear CMD0  */
 546         writel(CMD0_CLEAR,mmio + CMD0);
 547
 548         /* Clear CMD2 */
 549         writel(CMD2_CLEAR, mmio +CMD2);
 550
 551         /* Clear CMD7 */
 552         writel(CMD7_CLEAR , mmio + CMD7);
 553
 554         /* Clear DLY_INT_A and DLY_INT_B */
 555         writel(0x0, mmio + DLY_INT_A);
 556         writel(0x0, mmio + DLY_INT_B);
 557
 558         /* Clear FLOW_CONTROL */
 559         writel(0x0, mmio + FLOW_CONTROL);
 560
 561         /* Clear INT0  write 1 to clear register */
 562         reg_val = readl(mmio + INT0);
 563         writel(reg_val, mmio + INT0);
 564
 565         /* Clear STVAL */
 566         writel(0x0, mmio + STVAL);
 567
 568         /* Clear INTEN0 */
 569         writel( INTEN0_CLEAR, mmio + INTEN0);
 570
 571         /* Clear LADRF */
 572         writel(0x0 , mmio + LADRF);
 573
 574         /* Set SRAM_SIZE & SRAM_BOUNDARY registers  */
 575         writel( 0x80010,mmio + SRAM_SIZE);
 576
 577         /* Clear RCV_RING0_LEN */
 578         writel(0x0, mmio +  RCV_RING_LEN0);
 579
 580         /* Clear XMT_RING0/1/2/3_LEN */
 581         writel(0x0, mmio +  XMT_RING_LEN0);
 582         writel(0x0, mmio +  XMT_RING_LEN1);
 583         writel(0x0, mmio +  XMT_RING_LEN2);
 584         writel(0x0, mmio +  XMT_RING_LEN3);
 585
 586         /* Clear XMT_RING_LIMIT */
 587         writel(0x0, mmio + XMT_RING_LIMIT);
 588
 589         /* Clear MIB */
 590         writew(MIB_CLEAR, mmio + MIB_ADDR);
 591
 592         /* Clear LARF */
 593         amd8111e_writeq(*(u64*)logic_filter,mmio+LADRF);
 594
 595         /* SRAM_SIZE register */
 596         reg_val = readl(mmio + SRAM_SIZE);
 597
 598         if(lp->options & OPTION_JUMBO_ENABLE)
 599                 writel( VAL2|JUMBO, mmio + CMD3);
 600 #if AMD8111E_VLAN_TAG_USED
 601         writel(VAL2|VSIZE|VL_TAG_DEL, mmio + CMD3 );
 602 #endif
 603         /* Set default value to CTRL1 Register */
 604         writel(CTRL1_DEFAULT, mmio + CTRL1);
 605
 606         /* To avoid PCI posting bug */
 607         readl(mmio + CMD2);
 608
 609 }
 610
 611 /*
 612 This function disables the interrupt and clears all the pending
 613 interrupts in INT0
 614  */
 615 static void amd8111e_disable_interrupt(struct amd8111e_priv* lp)
 616 {
 617         u32 intr0;
 618
 619         /* Disable interrupt */
 620         writel(INTREN, lp->mmio + CMD0);
 621
 622         /* Clear INT0 */
 623         intr0 = readl(lp->mmio + INT0);
 624         writel(intr0, lp->mmio + INT0);
 625
 626         /* To avoid PCI posting bug */
 627         readl(lp->mmio + INT0);
 628
 629 }
 630
 631 /*
 632 This function stops the chip.
 633 */
 634 static void amd8111e_stop_chip(struct amd8111e_priv* lp)
 635 {
 636         writel(RUN, lp->mmio + CMD0);
 637
 638         /* To avoid PCI posting bug */
 639         readl(lp->mmio + CMD0);
 640 }
 641
 642 /*
 643 This function frees the  transmiter and receiver descriptor rings.
 644 */
 645 static void amd8111e_free_ring(struct amd8111e_priv* lp)
 646 {
 647         /* Free transmit and receive descriptor rings */
 648         if(lp->rx_ring){
 649                 pci_free_consistent(lp->pci_dev,
 650                         sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR,
 651                         lp->rx_ring, lp->rx_ring_dma_addr);
 652                 lp->rx_ring = NULL;
 653         }
 654
 655         if(lp->tx_ring){
 656                 pci_free_consistent(lp->pci_dev,
 657                         sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR,
 658                         lp->tx_ring, lp->tx_ring_dma_addr);
 659
 660                 lp->tx_ring = NULL;
 661         }
 662
 663 }
 664 #if AMD8111E_VLAN_TAG_USED
 665 /*
 666 This is the receive indication function for packets with vlan tag.
 667 */
 668 static int amd8111e_vlan_rx(struct amd8111e_priv *lp, struct sk_buff *skb, u16 vlan_tag)
 669 {
 670         return vlan_hwaccel_receive_skb(skb, lp->vlgrp,vlan_tag);
 671 }
 672 #endif
 673
 674 /*
 675 This function will free all the transmit skbs that are actually transmitted by the device. It will check the ownership of the skb before freeing the skb.
 676 */
 677 static int amd8111e_tx(struct net_device *dev)
 678 {
 679         struct amd8111e_priv* lp = netdev_priv(dev);
 680         int tx_index = lp->tx_complete_idx & TX_RING_DR_MOD_MASK;
 681         int status;
 682         /* Complete all the transmit packet */
 683         while (lp->tx_complete_idx != lp->tx_idx){
 684                 tx_index =  lp->tx_complete_idx & TX_RING_DR_MOD_MASK;
 685                 status = le16_to_cpu(lp->tx_ring[tx_index].tx_flags);
 686
 687                 if(status & OWN_BIT)
 688                         break;  /* It still hasn't been Txed */
 689
 690                 lp->tx_ring[tx_index].buff_phy_addr = 0;
 691
 692                 /* We must free the original skb */
 693                 if (lp->tx_skbuff[tx_index]) {
 694                         pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[tx_index],
 695                                         lp->tx_skbuff[tx_index]->len,
 696                                         PCI_DMA_TODEVICE);
 697                         dev_kfree_skb_irq (lp->tx_skbuff[tx_index]);
 698                         lp->tx_skbuff[tx_index] = NULL;
 699                         lp->tx_dma_addr[tx_index] = 0;
 700                 }
 701                 lp->tx_complete_idx++;
 702                 /*COAL update tx coalescing parameters */
 703                 lp->coal_conf.tx_packets++;
 704                 lp->coal_conf.tx_bytes +=
 705                         le16_to_cpu(lp->tx_ring[tx_index].buff_count);
 706
 707                 if (netif_queue_stopped(dev) &&
 708                         lp->tx_complete_idx > lp->tx_idx - NUM_TX_BUFFERS +2){
 709                         /* The ring is no longer full, clear tbusy. */
 710                         /* lp->tx_full = 0; */
 711                         netif_wake_queue (dev);
 712                 }
 713         }
 714         return 0;
 715 }
 716
 717 /* This function handles the driver receive operation in polling mode */
 718 static int amd8111e_rx_poll(struct napi_struct *napi, int budget)
 719 {
 720         struct amd8111e_priv *lp = container_of(napi, struct amd8111e_priv, napi);
 721         struct net_device *dev = lp->amd8111e_net_dev;
 722         int rx_index = lp->rx_idx & RX_RING_DR_MOD_MASK;
 723         void __iomem *mmio = lp->mmio;
 724         struct sk_buff *skb,*new_skb;
 725         int min_pkt_len, status;
 726         unsigned int intr0;
 727         int num_rx_pkt = 0;
 728         short pkt_len;
 729 #if AMD8111E_VLAN_TAG_USED
 730         short vtag;
 731 #endif
 732         int rx_pkt_limit = budget;
 733         unsigned long flags;
 734
 735         do{
 736                 /* process receive packets until we use the quota*/
 737                 /* If we own the next entry, it's a new packet. Send it up. */
 738                 while(1) {
 739                         status = le16_to_cpu(lp->rx_ring[rx_index].rx_flags);
 740                         if (status & OWN_BIT)
 741                                 break;
 742
 743                         /*
 744                          * There is a tricky error noted by John Murphy,
 745                          * <murf@perftech.com> to Russ Nelson: Even with
 746                          * full-sized * buffers it's possible for a
 747                          * jabber packet to use two buffers, with only
 748                          * the last correctly noting the error.
 749                          */
 750
 751                         if(status & ERR_BIT) {
 752                                 /* reseting flags */
 753                                 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
 754                                 goto err_next_pkt;
 755                         }
 756                         /* check for STP and ENP */
 757                         if(!((status & STP_BIT) && (status & ENP_BIT))){
 758                                 /* reseting flags */
 759                                 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
 760                                 goto err_next_pkt;
 761                         }
 762                         pkt_len = le16_to_cpu(lp->rx_ring[rx_index].msg_count) - 4;
 763
 764 #if AMD8111E_VLAN_TAG_USED
 765                         vtag = status & TT_MASK;
 766                         /*MAC will strip vlan tag*/
 767                         if(lp->vlgrp != NULL && vtag !=0)
 768                                 min_pkt_len =MIN_PKT_LEN - 4;
 769                         else
 770 #endif
 771                                 min_pkt_len =MIN_PKT_LEN;
 772
 773                         if (pkt_len < min_pkt_len) {
 774                                 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
 775                                 lp->drv_rx_errors++;
 776                                 goto err_next_pkt;
 777                         }
 778                         if(--rx_pkt_limit < 0)
 779                                 goto rx_not_empty;
 780                         if(!(new_skb = dev_alloc_skb(lp->rx_buff_len))){
 781                                 /* if allocation fail,
 782                                    ignore that pkt and go to next one */
 783                                 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
 784                                 lp->drv_rx_errors++;
 785                                 goto err_next_pkt;
 786                         }
 787
 788                         skb_reserve(new_skb, 2);
 789                         skb = lp->rx_skbuff[rx_index];
 790                         pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[rx_index],
 791                                          lp->rx_buff_len-2, PCI_DMA_FROMDEVICE);
 792                         skb_put(skb, pkt_len);
 793                         lp->rx_skbuff[rx_index] = new_skb;
 794                         lp->rx_dma_addr[rx_index] = pci_map_single(lp->pci_dev,
 795                                                                    new_skb->data,
 796                                                                    lp->rx_buff_len-2,
 797                                                                    PCI_DMA_FROMDEVICE);
 798
 799                         skb->protocol = eth_type_trans(skb, dev);
 800
 801 #if AMD8111E_VLAN_TAG_USED
 802                         if(lp->vlgrp != NULL && (vtag == TT_VLAN_TAGGED)){
 803                                 amd8111e_vlan_rx(lp, skb,
 804                                          le16_to_cpu(lp->rx_ring[rx_index].tag_ctrl_info));
 805                         } else
 806 #endif
 807                                 netif_receive_skb(skb);
 808                         /*COAL update rx coalescing parameters*/
 809                         lp->coal_conf.rx_packets++;
 810                         lp->coal_conf.rx_bytes += pkt_len;
 811                         num_rx_pkt++;
 812
 813                 err_next_pkt:
 814                         lp->rx_ring[rx_index].buff_phy_addr
 815                                 = cpu_to_le32(lp->rx_dma_addr[rx_index]);
 816                         lp->rx_ring[rx_index].buff_count =
 817                                 cpu_to_le16(lp->rx_buff_len-2);
 818                         wmb();
 819                         lp->rx_ring[rx_index].rx_flags |= cpu_to_le16(OWN_BIT);
 820                         rx_index = (++lp->rx_idx) & RX_RING_DR_MOD_MASK;
 821                 }
 822                 /* Check the interrupt status register for more packets in the
 823                    mean time. Process them since we have not used up our quota.*/
 824
 825                 intr0 = readl(mmio + INT0);
 826                 /*Ack receive packets */
 827                 writel(intr0 & RINT0,mmio + INT0);
 828
 829         } while(intr0 & RINT0);
 830
 831         if (rx_pkt_limit > 0) {
 832                 /* Receive descriptor is empty now */
 833                 spin_lock_irqsave(&lp->lock, flags);
 834                 __napi_complete(napi);
 835                 writel(VAL0|RINTEN0, mmio + INTEN0);
 836                 writel(VAL2 | RDMD0, mmio + CMD0);
 837                 spin_unlock_irqrestore(&lp->lock, flags);
 838         }
 839
 840 rx_not_empty:
 841         return num_rx_pkt;
 842 }
 843
 844 /*
 845 This function will indicate the link status to the kernel.
 846 */
 847 static int amd8111e_link_change(struct net_device* dev)
 848 {
 849         struct amd8111e_priv *lp = netdev_priv(dev);
 850         int status0,speed;
 851
 852         /* read the link change */
 853         status0 = readl(lp->mmio + STAT0);
 854
 855         if(status0 & LINK_STATS){
 856                 if(status0 & AUTONEG_COMPLETE)
 857                         lp->link_config.autoneg = AUTONEG_ENABLE;
 858                 else
 859                         lp->link_config.autoneg = AUTONEG_DISABLE;
 860
 861                 if(status0 & FULL_DPLX)
 862                         lp->link_config.duplex = DUPLEX_FULL;
 863                 else
 864                         lp->link_config.duplex = DUPLEX_HALF;
 865                 speed = (status0 & SPEED_MASK) >> 7;
 866                 if(speed == PHY_SPEED_10)
 867                         lp->link_config.speed = SPEED_10;
 868                 else if(speed == PHY_SPEED_100)
 869                         lp->link_config.speed = SPEED_100;
 870
 871                 printk(KERN_INFO "%s: Link is Up. Speed is %s Mbps %s Duplex\n",                        dev->name,
 872                        (lp->link_config.speed == SPEED_100) ? "100": "10",
 873                        (lp->link_config.duplex == DUPLEX_FULL)? "Full": "Half");
 874                 netif_carrier_on(dev);
 875         }
 876         else{
 877                 lp->link_config.speed = SPEED_INVALID;
 878                 lp->link_config.duplex = DUPLEX_INVALID;
 879                 lp->link_config.autoneg = AUTONEG_INVALID;
 880                 printk(KERN_INFO "%s: Link is Down.\n",dev->name);
 881                 netif_carrier_off(dev);
 882         }
 883
 884         return 0;
 885 }
 886 /*
 887 This function reads the mib counters.
 888 */
 889 static int amd8111e_read_mib(void __iomem *mmio, u8 MIB_COUNTER)
 890 {
 891         unsigned int  status;
 892         unsigned  int data;
 893         unsigned int repeat = REPEAT_CNT;
 894
 895         writew( MIB_RD_CMD | MIB_COUNTER, mmio + MIB_ADDR);
 896         do {
 897                 status = readw(mmio + MIB_ADDR);
 898                 udelay(2);      /* controller takes MAX 2 us to get mib data */
 899         }
 900         while (--repeat && (status & MIB_CMD_ACTIVE));
 901
 902         data = readl(mmio + MIB_DATA);
 903         return data;
 904 }
 905
 906 /*
 907 This function reads the mib registers and returns the hardware statistics. It  updates previous internal driver statistics with new values.
 908 */
 909 static struct net_device_stats *amd8111e_get_stats(struct net_device * dev)
 910 {
 911         struct amd8111e_priv *lp = netdev_priv(dev);
 912         void __iomem *mmio = lp->mmio;
 913         unsigned long flags;
 914         /* struct net_device_stats *prev_stats = &lp->prev_stats; */
 915         struct net_device_stats* new_stats = &lp->stats;
 916
 917         if(!lp->opened)
 918                 return &lp->stats;
 919         spin_lock_irqsave (&lp->lock, flags);
 920
 921         /* stats.rx_packets */
 922         new_stats->rx_packets = amd8111e_read_mib(mmio, rcv_broadcast_pkts)+
 923                                 amd8111e_read_mib(mmio, rcv_multicast_pkts)+
 924                                 amd8111e_read_mib(mmio, rcv_unicast_pkts);
 925
 926         /* stats.tx_packets */
 927         new_stats->tx_packets = amd8111e_read_mib(mmio, xmt_packets);
 928
 929         /*stats.rx_bytes */
 930         new_stats->rx_bytes = amd8111e_read_mib(mmio, rcv_octets);
 931
 932         /* stats.tx_bytes */
 933         new_stats->tx_bytes = amd8111e_read_mib(mmio, xmt_octets);
 934
 935         /* stats.rx_errors */
 936         /* hw errors + errors driver reported */
 937         new_stats->rx_errors = amd8111e_read_mib(mmio, rcv_undersize_pkts)+
 938                                 amd8111e_read_mib(mmio, rcv_fragments)+
 939                                 amd8111e_read_mib(mmio, rcv_jabbers)+
 940                                 amd8111e_read_mib(mmio, rcv_alignment_errors)+
 941                                 amd8111e_read_mib(mmio, rcv_fcs_errors)+
 942                                 amd8111e_read_mib(mmio, rcv_miss_pkts)+
 943                                 lp->drv_rx_errors;
 944
 945         /* stats.tx_errors */
 946         new_stats->tx_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
 947
 948         /* stats.rx_dropped*/
 949         new_stats->rx_dropped = amd8111e_read_mib(mmio, rcv_miss_pkts);
 950
 951         /* stats.tx_dropped*/
 952         new_stats->tx_dropped = amd8111e_read_mib(mmio,  xmt_underrun_pkts);
 953
 954         /* stats.multicast*/
 955         new_stats->multicast = amd8111e_read_mib(mmio, rcv_multicast_pkts);
 956
 957         /* stats.collisions*/
 958         new_stats->collisions = amd8111e_read_mib(mmio, xmt_collisions);
 959
 960         /* stats.rx_length_errors*/
 961         new_stats->rx_length_errors =
 962                 amd8111e_read_mib(mmio, rcv_undersize_pkts)+
 963                 amd8111e_read_mib(mmio, rcv_oversize_pkts);
 964
 965         /* stats.rx_over_errors*/
 966         new_stats->rx_over_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
 967
 968         /* stats.rx_crc_errors*/
 969         new_stats->rx_crc_errors = amd8111e_read_mib(mmio, rcv_fcs_errors);
 970
 971         /* stats.rx_frame_errors*/
 972         new_stats->rx_frame_errors =
 973                 amd8111e_read_mib(mmio, rcv_alignment_errors);
 974
 975         /* stats.rx_fifo_errors */
 976         new_stats->rx_fifo_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
 977
 978         /* stats.rx_missed_errors */
 979         new_stats->rx_missed_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
 980
 981         /* stats.tx_aborted_errors*/
 982         new_stats->tx_aborted_errors =
 983                 amd8111e_read_mib(mmio, xmt_excessive_collision);
 984
 985         /* stats.tx_carrier_errors*/
 986         new_stats->tx_carrier_errors =
 987                 amd8111e_read_mib(mmio, xmt_loss_carrier);
 988
 989         /* stats.tx_fifo_errors*/
 990         new_stats->tx_fifo_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
 991
 992         /* stats.tx_window_errors*/
 993         new_stats->tx_window_errors =
 994                 amd8111e_read_mib(mmio, xmt_late_collision);
 995
 996         /* Reset the mibs for collecting new statistics */
 997         /* writew(MIB_CLEAR, mmio + MIB_ADDR);*/
 998
 999         spin_unlock_irqrestore (&lp->lock, flags);
1000
1001         return new_stats;
1002 }
1003 /* This function recalculate the interrupt coalescing  mode on every interrupt
1004 according to the datarate and the packet rate.
1005 */
1006 static int amd8111e_calc_coalesce(struct net_device *dev)
1007 {
1008         struct amd8111e_priv *lp = netdev_priv(dev);
1009         struct amd8111e_coalesce_conf * coal_conf = &lp->coal_conf;
1010         int tx_pkt_rate;
1011         int rx_pkt_rate;
1012         int tx_data_rate;
1013         int rx_data_rate;
1014         int rx_pkt_size;
1015         int tx_pkt_size;
1016
1017         tx_pkt_rate = coal_conf->tx_packets - coal_conf->tx_prev_packets;
1018         coal_conf->tx_prev_packets =  coal_conf->tx_packets;
1019
1020         tx_data_rate = coal_conf->tx_bytes - coal_conf->tx_prev_bytes;
1021         coal_conf->tx_prev_bytes =  coal_conf->tx_bytes;
1022
1023         rx_pkt_rate = coal_conf->rx_packets - coal_conf->rx_prev_packets;
1024         coal_conf->rx_prev_packets =  coal_conf->rx_packets;
1025
1026         rx_data_rate = coal_conf->rx_bytes - coal_conf->rx_prev_bytes;
1027         coal_conf->rx_prev_bytes =  coal_conf->rx_bytes;
1028
1029         if(rx_pkt_rate < 800){
1030                 if(coal_conf->rx_coal_type != NO_COALESCE){
1031
1032                         coal_conf->rx_timeout = 0x0;
1033                         coal_conf->rx_event_count = 0;
1034                         amd8111e_set_coalesce(dev,RX_INTR_COAL);
1035                         coal_conf->rx_coal_type = NO_COALESCE;
1036                 }
1037         }
1038         else{
1039
1040                 rx_pkt_size = rx_data_rate/rx_pkt_rate;
1041                 if (rx_pkt_size < 128){
1042                         if(coal_conf->rx_coal_type != NO_COALESCE){
1043
1044                                 coal_conf->rx_timeout = 0;
1045                                 coal_conf->rx_event_count = 0;
1046                                 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1047                                 coal_conf->rx_coal_type = NO_COALESCE;
1048                         }
1049
1050                 }
1051                 else if ( (rx_pkt_size >= 128) && (rx_pkt_size < 512) ){
1052
1053                         if(coal_conf->rx_coal_type !=  LOW_COALESCE){
1054                                 coal_conf->rx_timeout = 1;
1055                                 coal_conf->rx_event_count = 4;
1056                                 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1057                                 coal_conf->rx_coal_type = LOW_COALESCE;
1058                         }
1059                 }
1060                 else if ((rx_pkt_size >= 512) && (rx_pkt_size < 1024)){
1061
1062                         if(coal_conf->rx_coal_type !=  MEDIUM_COALESCE){
1063                                 coal_conf->rx_timeout = 1;
1064                                 coal_conf->rx_event_count = 4;
1065                                 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1066                                 coal_conf->rx_coal_type = MEDIUM_COALESCE;
1067                         }
1068
1069                 }
1070                 else if(rx_pkt_size >= 1024){
1071                         if(coal_conf->rx_coal_type !=  HIGH_COALESCE){
1072                                 coal_conf->rx_timeout = 2;
1073                                 coal_conf->rx_event_count = 3;
1074                                 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1075                                 coal_conf->rx_coal_type = HIGH_COALESCE;
1076                         }
1077                 }
1078         }
1079         /* NOW FOR TX INTR COALESC */
1080         if(tx_pkt_rate < 800){
1081                 if(coal_conf->tx_coal_type != NO_COALESCE){
1082
1083                         coal_conf->tx_timeout = 0x0;
1084                         coal_conf->tx_event_count = 0;
1085                         amd8111e_set_coalesce(dev,TX_INTR_COAL);
1086                         coal_conf->tx_coal_type = NO_COALESCE;
1087                 }
1088         }
1089         else{
1090
1091                 tx_pkt_size = tx_data_rate/tx_pkt_rate;
1092                 if (tx_pkt_size < 128){
1093
1094                         if(coal_conf->tx_coal_type != NO_COALESCE){
1095
1096                                 coal_conf->tx_timeout = 0;
1097                                 coal_conf->tx_event_count = 0;
1098                                 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1099                                 coal_conf->tx_coal_type = NO_COALESCE;
1100                         }
1101
1102                 }
1103                 else if ( (tx_pkt_size >= 128) && (tx_pkt_size < 512) ){
1104
1105                         if(coal_conf->tx_coal_type !=  LOW_COALESCE){
1106                                 coal_conf->tx_timeout = 1;
1107                                 coal_conf->tx_event_count = 2;
1108                                 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1109                                 coal_conf->tx_coal_type = LOW_COALESCE;
1110
1111                         }
1112                 }
1113                 else if ((tx_pkt_size >= 512) && (tx_pkt_size < 1024)){
1114
1115                         if(coal_conf->tx_coal_type !=  MEDIUM_COALESCE){
1116                                 coal_conf->tx_timeout = 2;
1117                                 coal_conf->tx_event_count = 5;
1118                                 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1119                                 coal_conf->tx_coal_type = MEDIUM_COALESCE;
1120                         }
1121
1122                 }
1123                 else if(tx_pkt_size >= 1024){
1124                         if (tx_pkt_size >= 1024){
1125                                 if(coal_conf->tx_coal_type !=  HIGH_COALESCE){
1126                                         coal_conf->tx_timeout = 4;
1127                                         coal_conf->tx_event_count = 8;
1128                                         amd8111e_set_coalesce(dev,TX_INTR_COAL);
1129                                         coal_conf->tx_coal_type = HIGH_COALESCE;
1130                                 }
1131                         }
1132                 }
1133         }
1134         return 0;
1135
1136 }
1137 /*
1138 This is device interrupt function. It handles transmit, receive,link change and hardware timer interrupts.
1139 */
1140 static irqreturn_t amd8111e_interrupt(int irq, void *dev_id)
1141 {
1142
1143         struct net_device * dev = (struct net_device *) dev_id;
1144         struct amd8111e_priv *lp = netdev_priv(dev);
1145         void __iomem *mmio = lp->mmio;
1146         unsigned int intr0, intren0;
1147         unsigned int handled = 1;
1148
1149         if(unlikely(dev == NULL))
1150                 return IRQ_NONE;
1151
1152         spin_lock(&lp->lock);
1153
1154         /* disabling interrupt */
1155         writel(INTREN, mmio + CMD0);
1156
1157         /* Read interrupt status */
1158         intr0 = readl(mmio + INT0);
1159         intren0 = readl(mmio + INTEN0);
1160
1161         /* Process all the INT event until INTR bit is clear. */
1162
1163         if (!(intr0 & INTR)){
1164                 handled = 0;
1165                 goto err_no_interrupt;
1166         }
1167
1168         /* Current driver processes 4 interrupts : RINT,TINT,LCINT,STINT */
1169         writel(intr0, mmio + INT0);
1170
1171         /* Check if Receive Interrupt has occurred. */
1172         if (intr0 & RINT0) {
1173                 if (napi_schedule_prep(&lp->napi)) {
1174                         /* Disable receive interupts */
1175                         writel(RINTEN0, mmio + INTEN0);
1176                         /* Schedule a polling routine */
1177                         __napi_schedule(&lp->napi);
1178                 } else if (intren0 & RINTEN0) {
1179                         printk("************Driver bug! \
1180                                 interrupt while in poll\n");
1181                         /* Fix by disable receive interrupts */
1182                         writel(RINTEN0, mmio + INTEN0);
1183                 }
1184         }
1185
1186         /* Check if  Transmit Interrupt has occurred. */
1187         if (intr0 & TINT0)
1188                 amd8111e_tx(dev);
1189
1190         /* Check if  Link Change Interrupt has occurred. */
1191         if (intr0 & LCINT)
1192                 amd8111e_link_change(dev);
1193
1194         /* Check if Hardware Timer Interrupt has occurred. */
1195         if (intr0 & STINT)
1196                 amd8111e_calc_coalesce(dev);
1197
1198 err_no_interrupt:
1199         writel( VAL0 | INTREN,mmio + CMD0);
1200
1201         spin_unlock(&lp->lock);
1202
1203         return IRQ_RETVAL(handled);
1204 }
1205
1206 #ifdef CONFIG_NET_POLL_CONTROLLER
1207 static void amd8111e_poll(struct net_device *dev)
1208 {
1209         unsigned long flags;
1210         local_irq_save(flags);
1211         amd8111e_interrupt(0, dev);
1212         local_irq_restore(flags);
1213 }
1214 #endif
1215
1216
1217 /*
1218 This function closes the network interface and updates the statistics so that most recent statistics will be available after the interface is down.
1219 */
1220 static int amd8111e_close(struct net_device * dev)
1221 {
1222         struct amd8111e_priv *lp = netdev_priv(dev);
1223         netif_stop_queue(dev);
1224
1225         napi_disable(&lp->napi);
1226
1227         spin_lock_irq(&lp->lock);
1228
1229         amd8111e_disable_interrupt(lp);
1230         amd8111e_stop_chip(lp);
1231
1232         /* Free transmit and receive skbs */
1233         amd8111e_free_skbs(lp->amd8111e_net_dev);
1234
1235         netif_carrier_off(lp->amd8111e_net_dev);
1236
1237         /* Delete ipg timer */
1238         if(lp->options & OPTION_DYN_IPG_ENABLE)
1239                 del_timer_sync(&lp->ipg_data.ipg_timer);
1240
1241         spin_unlock_irq(&lp->lock);
1242         free_irq(dev->irq, dev);
1243         amd8111e_free_ring(lp);
1244
1245         /* Update the statistics before closing */
1246         amd8111e_get_stats(dev);
1247         lp->opened = 0;
1248         return 0;
1249 }
1250 /* This function opens new interface.It requests irq for the device, initializes the device,buffers and descriptors, and starts the device.
1251 */
1252 static int amd8111e_open(struct net_device * dev )
1253 {
1254         struct amd8111e_priv *lp = netdev_priv(dev);
1255
1256         if(dev->irq ==0 || request_irq(dev->irq, amd8111e_interrupt, IRQF_SHARED,
1257                                          dev->name, dev))
1258                 return -EAGAIN;
1259
1260         napi_enable(&lp->napi);
1261
1262         spin_lock_irq(&lp->lock);
1263
1264         amd8111e_init_hw_default(lp);
1265
1266         if(amd8111e_restart(dev)){
1267                 spin_unlock_irq(&lp->lock);
1268                 napi_disable(&lp->napi);
1269                 if (dev->irq)
1270                         free_irq(dev->irq, dev);
1271                 return -ENOMEM;
1272         }
1273         /* Start ipg timer */
1274         if(lp->options & OPTION_DYN_IPG_ENABLE){
1275                 add_timer(&lp->ipg_data.ipg_timer);
1276                 printk(KERN_INFO "%s: Dynamic IPG Enabled.\n",dev->name);
1277         }
1278
1279         lp->opened = 1;
1280
1281         spin_unlock_irq(&lp->lock);
1282
1283         netif_start_queue(dev);
1284
1285         return 0;
1286 }
1287 /*
1288 This function checks if there is any transmit  descriptors available to queue more packet.
1289 */
1290 static int amd8111e_tx_queue_avail(struct amd8111e_priv* lp )
1291 {
1292         int tx_index = lp->tx_idx & TX_BUFF_MOD_MASK;
1293         if (lp->tx_skbuff[tx_index])
1294                 return -1;
1295         else
1296                 return 0;
1297
1298 }
1299 /*
1300 This function will queue the transmit packets to the descriptors and will trigger the send operation. It also initializes the transmit descriptors with buffer physical address, byte count, ownership to hardware etc.
1301 */
1302
1303 static int amd8111e_start_xmit(struct sk_buff *skb, struct net_device * dev)
1304 {
1305         struct amd8111e_priv *lp = netdev_priv(dev);
1306         int tx_index;
1307         unsigned long flags;
1308
1309         spin_lock_irqsave(&lp->lock, flags);
1310
1311         tx_index = lp->tx_idx & TX_RING_DR_MOD_MASK;
1312
1313         lp->tx_ring[tx_index].buff_count = cpu_to_le16(skb->len);
1314
1315         lp->tx_skbuff[tx_index] = skb;
1316         lp->tx_ring[tx_index].tx_flags = 0;
1317
1318 #if AMD8111E_VLAN_TAG_USED
1319         if((lp->vlgrp != NULL) && vlan_tx_tag_present(skb)){
1320                 lp->tx_ring[tx_index].tag_ctrl_cmd |=
1321                                 cpu_to_le16(TCC_VLAN_INSERT);
1322                 lp->tx_ring[tx_index].tag_ctrl_info =
1323                                 cpu_to_le16(vlan_tx_tag_get(skb));
1324
1325         }
1326 #endif
1327         lp->tx_dma_addr[tx_index] =
1328             pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
1329         lp->tx_ring[tx_index].buff_phy_addr =
1330             cpu_to_le32(lp->tx_dma_addr[tx_index]);
1331
1332         /*  Set FCS and LTINT bits */
1333         wmb();
1334         lp->tx_ring[tx_index].tx_flags |=
1335             cpu_to_le16(OWN_BIT | STP_BIT | ENP_BIT|ADD_FCS_BIT|LTINT_BIT);
1336
1337         lp->tx_idx++;
1338
1339         /* Trigger an immediate send poll. */
1340         writel( VAL1 | TDMD0, lp->mmio + CMD0);
1341         writel( VAL2 | RDMD0,lp->mmio + CMD0);
1342
1343         dev->trans_start = jiffies;
1344
1345         if(amd8111e_tx_queue_avail(lp) < 0){
1346                 netif_stop_queue(dev);
1347         }
1348         spin_unlock_irqrestore(&lp->lock, flags);
1349         return 0;
1350 }
1351 /*
1352 This function returns all the memory mapped registers of the device.
1353 */
1354 static void amd8111e_read_regs(struct amd8111e_priv *lp, u32 *buf)
1355 {
1356         void __iomem *mmio = lp->mmio;
1357         /* Read only necessary registers */
1358         buf[0] = readl(mmio + XMT_RING_BASE_ADDR0);
1359         buf[1] = readl(mmio + XMT_RING_LEN0);
1360         buf[2] = readl(mmio + RCV_RING_BASE_ADDR0);
1361         buf[3] = readl(mmio + RCV_RING_LEN0);
1362         buf[4] = readl(mmio + CMD0);
1363         buf[5] = readl(mmio + CMD2);
1364         buf[6] = readl(mmio + CMD3);
1365         buf[7] = readl(mmio + CMD7);
1366         buf[8] = readl(mmio + INT0);
1367         buf[9] = readl(mmio + INTEN0);
1368         buf[10] = readl(mmio + LADRF);
1369         buf[11] = readl(mmio + LADRF+4);
1370         buf[12] = readl(mmio + STAT0);
1371 }
1372
1373
1374 /*
1375 This function sets promiscuos mode, all-multi mode or the multicast address
1376 list to the device.
1377 */
1378 static void amd8111e_set_multicast_list(struct net_device *dev)
1379 {
1380         struct dev_mc_list* mc_ptr;
1381         struct amd8111e_priv *lp = netdev_priv(dev);
1382         u32 mc_filter[2] ;
1383         int i,bit_num;
1384         if(dev->flags & IFF_PROMISC){
1385                 writel( VAL2 | PROM, lp->mmio + CMD2);
1386                 return;
1387         }
1388         else
1389                 writel( PROM, lp->mmio + CMD2);
1390         if(dev->flags & IFF_ALLMULTI || dev->mc_count > MAX_FILTER_SIZE){
1391                 /* get all multicast packet */
1392                 mc_filter[1] = mc_filter[0] = 0xffffffff;
1393                 lp->mc_list = dev->mc_list;
1394                 lp->options |= OPTION_MULTICAST_ENABLE;
1395                 amd8111e_writeq(*(u64*)mc_filter,lp->mmio + LADRF);
1396                 return;
1397         }
1398         if( dev->mc_count == 0 ){
1399                 /* get only own packets */
1400                 mc_filter[1] = mc_filter[0] = 0;
1401                 lp->mc_list = NULL;
1402                 lp->options &= ~OPTION_MULTICAST_ENABLE;
1403                 amd8111e_writeq(*(u64*)mc_filter,lp->mmio + LADRF);
1404                 /* disable promiscous mode */
1405                 writel(PROM, lp->mmio + CMD2);
1406                 return;
1407         }
1408         /* load all the multicast addresses in the logic filter */
1409         lp->options |= OPTION_MULTICAST_ENABLE;
1410         lp->mc_list = dev->mc_list;
1411         mc_filter[1] = mc_filter[0] = 0;
1412         for (i = 0, mc_ptr = dev->mc_list; mc_ptr && i < dev->mc_count;
1413                      i++, mc_ptr = mc_ptr->next) {
1414                 bit_num = (ether_crc_le(ETH_ALEN, mc_ptr->dmi_addr) >> 26) & 0x3f;
1415                 mc_filter[bit_num >> 5] |= 1 << (bit_num & 31);
1416         }
1417         amd8111e_writeq(*(u64*)mc_filter,lp->mmio+ LADRF);
1418
1419         /* To eliminate PCI posting bug */
1420         readl(lp->mmio + CMD2);
1421
1422 }
1423
1424 static void amd8111e_get_drvinfo(struct net_device* dev, struct ethtool_drvinfo *info)
1425 {
1426         struct amd8111e_priv *lp = netdev_priv(dev);
1427         struct pci_dev *pci_dev = lp->pci_dev;
1428         strcpy (info->driver, MODULE_NAME);
1429         strcpy (info->version, MODULE_VERS);
1430         sprintf(info->fw_version,"%u",chip_version);
1431         strcpy (info->bus_info, pci_name(pci_dev));
1432 }
1433
1434 static int amd8111e_get_regs_len(struct net_device *dev)
1435 {
1436         return AMD8111E_REG_DUMP_LEN;
1437 }
1438
1439 static void amd8111e_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
1440 {
1441         struct amd8111e_priv *lp = netdev_priv(dev);
1442         regs->version = 0;
1443         amd8111e_read_regs(lp, buf);
1444 }
1445
1446 static int amd8111e_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1447 {
1448         struct amd8111e_priv *lp = netdev_priv(dev);
1449         spin_lock_irq(&lp->lock);
1450         mii_ethtool_gset(&lp->mii_if, ecmd);
1451         spin_unlock_irq(&lp->lock);
1452         return 0;
1453 }
1454
1455 static int amd8111e_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1456 {
1457         struct amd8111e_priv *lp = netdev_priv(dev);
1458         int res;
1459         spin_lock_irq(&lp->lock);
1460         res = mii_ethtool_sset(&lp->mii_if, ecmd);
1461         spin_unlock_irq(&lp->lock);
1462         return res;
1463 }
1464
1465 static int amd8111e_nway_reset(struct net_device *dev)
1466 {
1467         struct amd8111e_priv *lp = netdev_priv(dev);
1468         return mii_nway_restart(&lp->mii_if);
1469 }
1470
1471 static u32 amd8111e_get_link(struct net_device *dev)
1472 {
1473         struct amd8111e_priv *lp = netdev_priv(dev);
1474         return mii_link_ok(&lp->mii_if);
1475 }
1476
1477 static void amd8111e_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1478 {
1479         struct amd8111e_priv *lp = netdev_priv(dev);
1480         wol_info->supported = WAKE_MAGIC|WAKE_PHY;
1481         if (lp->options & OPTION_WOL_ENABLE)
1482                 wol_info->wolopts = WAKE_MAGIC;
1483 }
1484
1485 static int amd8111e_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1486 {
1487         struct amd8111e_priv *lp = netdev_priv(dev);
1488         if (wol_info->wolopts & ~(WAKE_MAGIC|WAKE_PHY))
1489                 return -EINVAL;
1490         spin_lock_irq(&lp->lock);
1491         if (wol_info->wolopts & WAKE_MAGIC)
1492                 lp->options |=
1493                         (OPTION_WOL_ENABLE | OPTION_WAKE_MAGIC_ENABLE);
1494         else if(wol_info->wolopts & WAKE_PHY)
1495                 lp->options |=
1496                         (OPTION_WOL_ENABLE | OPTION_WAKE_PHY_ENABLE);
1497         else
1498                 lp->options &= ~OPTION_WOL_ENABLE;
1499         spin_unlock_irq(&lp->lock);
1500         return 0;
1501 }
1502
1503 static const struct ethtool_ops ops = {
1504         .get_drvinfo = amd8111e_get_drvinfo,
1505         .get_regs_len = amd8111e_get_regs_len,
1506         .get_regs = amd8111e_get_regs,
1507         .get_settings = amd8111e_get_settings,
1508         .set_settings = amd8111e_set_settings,
1509         .nway_reset = amd8111e_nway_reset,
1510         .get_link = amd8111e_get_link,
1511         .get_wol = amd8111e_get_wol,
1512         .set_wol = amd8111e_set_wol,
1513 };
1514
1515 /*
1516 This function handles all the  ethtool ioctls. It gives driver info, gets/sets driver speed, gets memory mapped register values, forces auto negotiation, sets/gets WOL options for ethtool application.
1517 */
1518
1519 static int amd8111e_ioctl(struct net_device * dev , struct ifreq *ifr, int cmd)
1520 {
1521         struct mii_ioctl_data *data = if_mii(ifr);
1522         struct amd8111e_priv *lp = netdev_priv(dev);
1523         int err;
1524         u32 mii_regval;
1525
1526         if (!capable(CAP_NET_ADMIN))
1527                 return -EPERM;
1528
1529         switch(cmd) {
1530         case SIOCGMIIPHY:
1531                 data->phy_id = lp->ext_phy_addr;
1532
1533         /* fallthru */
1534         case SIOCGMIIREG:
1535
1536                 spin_lock_irq(&lp->lock);
1537                 err = amd8111e_read_phy(lp, data->phy_id,
1538                         data->reg_num & PHY_REG_ADDR_MASK, &mii_regval);
1539                 spin_unlock_irq(&lp->lock);
1540
1541                 data->val_out = mii_regval;
1542                 return err;
1543
1544         case SIOCSMIIREG:
1545
1546                 spin_lock_irq(&lp->lock);
1547                 err = amd8111e_write_phy(lp, data->phy_id,
1548                         data->reg_num & PHY_REG_ADDR_MASK, data->val_in);
1549                 spin_unlock_irq(&lp->lock);
1550
1551                 return err;
1552
1553         default:
1554                 /* do nothing */
1555                 break;
1556         }
1557         return -EOPNOTSUPP;
1558 }
1559 static int amd8111e_set_mac_address(struct net_device *dev, void *p)
1560 {
1561         struct amd8111e_priv *lp = netdev_priv(dev);
1562         int i;
1563         struct sockaddr *addr = p;
1564
1565         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1566         spin_lock_irq(&lp->lock);
1567         /* Setting the MAC address to the device */
1568         for(i = 0; i < ETH_ADDR_LEN; i++)
1569                 writeb( dev->dev_addr[i], lp->mmio + PADR + i );
1570
1571         spin_unlock_irq(&lp->lock);
1572
1573         return 0;
1574 }
1575
1576 /*
1577 This function changes the mtu of the device. It restarts the device  to initialize the descriptor with new receive buffers.
1578 */
1579 static int amd8111e_change_mtu(struct net_device *dev, int new_mtu)
1580 {
1581         struct amd8111e_priv *lp = netdev_priv(dev);
1582         int err;
1583
1584         if ((new_mtu < AMD8111E_MIN_MTU) || (new_mtu > AMD8111E_MAX_MTU))
1585                 return -EINVAL;
1586
1587         if (!netif_running(dev)) {
1588                 /* new_mtu will be used
1589                    when device starts netxt time */
1590                 dev->mtu = new_mtu;
1591                 return 0;
1592         }
1593
1594         spin_lock_irq(&lp->lock);
1595
1596         /* stop the chip */
1597         writel(RUN, lp->mmio + CMD0);
1598
1599         dev->mtu = new_mtu;
1600
1601         err = amd8111e_restart(dev);
1602         spin_unlock_irq(&lp->lock);
1603         if(!err)
1604                 netif_start_queue(dev);
1605         return err;
1606 }
1607
1608 #if AMD8111E_VLAN_TAG_USED
1609 static void amd8111e_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
1610 {
1611         struct  amd8111e_priv *lp = netdev_priv(dev);
1612         spin_lock_irq(&lp->lock);
1613         lp->vlgrp = grp;
1614         spin_unlock_irq(&lp->lock);
1615 }
1616 #endif
1617
1618 static int amd8111e_enable_magicpkt(struct amd8111e_priv* lp)
1619 {
1620         writel( VAL1|MPPLBA, lp->mmio + CMD3);
1621         writel( VAL0|MPEN_SW, lp->mmio + CMD7);
1622
1623         /* To eliminate PCI posting bug */
1624         readl(lp->mmio + CMD7);
1625         return 0;
1626 }
1627
1628 static int amd8111e_enable_link_change(struct amd8111e_priv* lp)
1629 {
1630
1631         /* Adapter is already stoped/suspended/interrupt-disabled */
1632         writel(VAL0|LCMODE_SW,lp->mmio + CMD7);
1633
1634         /* To eliminate PCI posting bug */
1635         readl(lp->mmio + CMD7);
1636         return 0;
1637 }
1638 /* This function is called when a packet transmission fails to complete within a  resonable period, on the assumption that an interrupts have been failed or the  interface is locked up. This function will reinitialize the hardware */
1639
1640 static void amd8111e_tx_timeout(struct net_device *dev)
1641 {
1642         struct amd8111e_priv* lp = netdev_priv(dev);
1643         int err;
1644
1645         printk(KERN_ERR "%s: transmit timed out, resetting\n",
1646                                                       dev->name);
1647         spin_lock_irq(&lp->lock);
1648         err = amd8111e_restart(dev);
1649         spin_unlock_irq(&lp->lock);
1650         if(!err)
1651                 netif_wake_queue(dev);
1652 }
1653 static int amd8111e_suspend(struct pci_dev *pci_dev, pm_message_t state)
1654 {
1655         struct net_device *dev = pci_get_drvdata(pci_dev);
1656         struct amd8111e_priv *lp = netdev_priv(dev);
1657
1658         if (!netif_running(dev))
1659                 return 0;
1660
1661         /* disable the interrupt */
1662         spin_lock_irq(&lp->lock);
1663         amd8111e_disable_interrupt(lp);
1664         spin_unlock_irq(&lp->lock);
1665
1666         netif_device_detach(dev);
1667
1668         /* stop chip */
1669         spin_lock_irq(&lp->lock);
1670         if(lp->options & OPTION_DYN_IPG_ENABLE)
1671                 del_timer_sync(&lp->ipg_data.ipg_timer);
1672         amd8111e_stop_chip(lp);
1673         spin_unlock_irq(&lp->lock);
1674
1675         if(lp->options & OPTION_WOL_ENABLE){
1676                  /* enable wol */
1677                 if(lp->options & OPTION_WAKE_MAGIC_ENABLE)
1678                         amd8111e_enable_magicpkt(lp);
1679                 if(lp->options & OPTION_WAKE_PHY_ENABLE)
1680                         amd8111e_enable_link_change(lp);
1681
1682                 pci_enable_wake(pci_dev, PCI_D3hot, 1);
1683                 pci_enable_wake(pci_dev, PCI_D3cold, 1);
1684
1685         }
1686         else{
1687                 pci_enable_wake(pci_dev, PCI_D3hot, 0);
1688                 pci_enable_wake(pci_dev, PCI_D3cold, 0);
1689         }
1690
1691         pci_save_state(pci_dev);
1692         pci_set_power_state(pci_dev, PCI_D3hot);
1693
1694         return 0;
1695 }
1696 static int amd8111e_resume(struct pci_dev *pci_dev)
1697 {
1698         struct net_device *dev = pci_get_drvdata(pci_dev);
1699         struct amd8111e_priv *lp = netdev_priv(dev);
1700
1701         if (!netif_running(dev))
1702                 return 0;
1703
1704         pci_set_power_state(pci_dev, PCI_D0);
1705         pci_restore_state(pci_dev);
1706
1707         pci_enable_wake(pci_dev, PCI_D3hot, 0);
1708         pci_enable_wake(pci_dev, PCI_D3cold, 0); /* D3 cold */
1709
1710         netif_device_attach(dev);
1711
1712         spin_lock_irq(&lp->lock);
1713         amd8111e_restart(dev);
1714         /* Restart ipg timer */
1715         if(lp->options & OPTION_DYN_IPG_ENABLE)
1716                 mod_timer(&lp->ipg_data.ipg_timer,
1717                                 jiffies + IPG_CONVERGE_JIFFIES);
1718         spin_unlock_irq(&lp->lock);
1719
1720         return 0;
1721 }
1722
1723
1724 static void __devexit amd8111e_remove_one(struct pci_dev *pdev)
1725 {
1726         struct net_device *dev = pci_get_drvdata(pdev);
1727         if (dev) {
1728                 unregister_netdev(dev);
1729                 iounmap(((struct amd8111e_priv *)netdev_priv(dev))->mmio);
1730                 free_netdev(dev);
1731                 pci_release_regions(pdev);
1732                 pci_disable_device(pdev);
1733                 pci_set_drvdata(pdev, NULL);
1734         }
1735 }
1736 static void amd8111e_config_ipg(struct net_device* dev)
1737 {
1738         struct amd8111e_priv *lp = netdev_priv(dev);
1739         struct ipg_info* ipg_data = &lp->ipg_data;
1740         void __iomem *mmio = lp->mmio;
1741         unsigned int prev_col_cnt = ipg_data->col_cnt;
1742         unsigned int total_col_cnt;
1743         unsigned int tmp_ipg;
1744
1745         if(lp->link_config.duplex == DUPLEX_FULL){
1746                 ipg_data->ipg = DEFAULT_IPG;
1747                 return;
1748         }
1749
1750         if(ipg_data->ipg_state == SSTATE){
1751
1752                 if(ipg_data->timer_tick == IPG_STABLE_TIME){
1753
1754                         ipg_data->timer_tick = 0;
1755                         ipg_data->ipg = MIN_IPG - IPG_STEP;
1756                         ipg_data->current_ipg = MIN_IPG;
1757                         ipg_data->diff_col_cnt = 0xFFFFFFFF;
1758                         ipg_data->ipg_state = CSTATE;
1759                 }
1760                 else
1761                         ipg_data->timer_tick++;
1762         }
1763
1764         if(ipg_data->ipg_state == CSTATE){
1765
1766                 /* Get the current collision count */
1767
1768                 total_col_cnt = ipg_data->col_cnt =
1769                                 amd8111e_read_mib(mmio, xmt_collisions);
1770
1771                 if ((total_col_cnt - prev_col_cnt) <
1772                                 (ipg_data->diff_col_cnt)){
1773
1774                         ipg_data->diff_col_cnt =
1775                                 total_col_cnt - prev_col_cnt ;
1776
1777                         ipg_data->ipg = ipg_data->current_ipg;
1778                 }
1779
1780                 ipg_data->current_ipg += IPG_STEP;
1781
1782                 if (ipg_data->current_ipg <= MAX_IPG)
1783                         tmp_ipg = ipg_data->current_ipg;
1784                 else{
1785                         tmp_ipg = ipg_data->ipg;
1786                         ipg_data->ipg_state = SSTATE;
1787                 }
1788                 writew((u32)tmp_ipg, mmio + IPG);
1789                 writew((u32)(tmp_ipg - IFS1_DELTA), mmio + IFS1);
1790         }
1791          mod_timer(&lp->ipg_data.ipg_timer, jiffies + IPG_CONVERGE_JIFFIES);
1792         return;
1793
1794 }
1795
1796 static void __devinit amd8111e_probe_ext_phy(struct net_device* dev)
1797 {
1798         struct amd8111e_priv *lp = netdev_priv(dev);
1799         int i;
1800
1801         for (i = 0x1e; i >= 0; i--) {
1802                 u32 id1, id2;
1803
1804                 if (amd8111e_read_phy(lp, i, MII_PHYSID1, &id1))
1805                         continue;
1806                 if (amd8111e_read_phy(lp, i, MII_PHYSID2, &id2))
1807                         continue;
1808                 lp->ext_phy_id = (id1 << 16) | id2;
1809                 lp->ext_phy_addr = i;
1810                 return;
1811         }
1812         lp->ext_phy_id = 0;
1813         lp->ext_phy_addr = 1;
1814 }
1815
1816 static const struct net_device_ops amd8111e_netdev_ops = {
1817         .ndo_open               = amd8111e_open,
1818         .ndo_stop               = amd8111e_close,
1819         .ndo_start_xmit         = amd8111e_start_xmit,
1820         .ndo_tx_timeout         = amd8111e_tx_timeout,
1821         .ndo_get_stats          = amd8111e_get_stats,
1822         .ndo_set_multicast_list = amd8111e_set_multicast_list,
1823         .ndo_validate_addr      = eth_validate_addr,
1824         .ndo_set_mac_address    = amd8111e_set_mac_address,
1825         .ndo_do_ioctl           = amd8111e_ioctl,
1826         .ndo_change_mtu         = amd8111e_change_mtu,
1827 #if AMD8111E_VLAN_TAG_USED
1828         .ndo_vlan_rx_register   = amd8111e_vlan_rx_register,
1829 #endif
1830 #ifdef CONFIG_NET_POLL_CONTROLLER
1831         .ndo_poll_controller     = amd8111e_poll,
1832 #endif
1833 };
1834
1835 static int __devinit amd8111e_probe_one(struct pci_dev *pdev,
1836                                   const struct pci_device_id *ent)
1837 {
1838         int err,i,pm_cap;
1839         unsigned long reg_addr,reg_len;
1840         struct amd8111e_priv* lp;
1841         struct net_device* dev;
1842
1843         err = pci_enable_device(pdev);
1844         if(err){
1845                 printk(KERN_ERR "amd8111e: Cannot enable new PCI device, "
1846                         "exiting.\n");
1847                 return err;
1848         }
1849
1850         if(!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)){
1851                 printk(KERN_ERR "amd8111e: Cannot find PCI base address, "
1852                        "exiting.\n");
1853                 err = -ENODEV;
1854                 goto err_disable_pdev;
1855         }
1856
1857         err = pci_request_regions(pdev, MODULE_NAME);
1858         if(err){
1859                 printk(KERN_ERR "amd8111e: Cannot obtain PCI resources, "
1860                        "exiting.\n");
1861                 goto err_disable_pdev;
1862         }
1863
1864         pci_set_master(pdev);
1865
1866         /* Find power-management capability. */
1867         if((pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM))==0){
1868                 printk(KERN_ERR "amd8111e: No Power Management capability, "
1869                        "exiting.\n");
1870                 goto err_free_reg;
1871         }
1872
1873         /* Initialize DMA */
1874         if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) < 0) {
1875                 printk(KERN_ERR "amd8111e: DMA not supported,"
1876                         "exiting.\n");
1877                 goto err_free_reg;
1878         }
1879
1880         reg_addr = pci_resource_start(pdev, 0);
1881         reg_len = pci_resource_len(pdev, 0);
1882
1883         dev = alloc_etherdev(sizeof(struct amd8111e_priv));
1884         if (!dev) {
1885                 printk(KERN_ERR "amd8111e: Etherdev alloc failed, exiting.\n");
1886                 err = -ENOMEM;
1887                 goto err_free_reg;
1888         }
1889
1890         SET_NETDEV_DEV(dev, &pdev->dev);
1891
1892 #if AMD8111E_VLAN_TAG_USED
1893         dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX ;
1894 #endif
1895
1896         lp = netdev_priv(dev);
1897         lp->pci_dev = pdev;
1898         lp->amd8111e_net_dev = dev;
1899         lp->pm_cap = pm_cap;
1900
1901         spin_lock_init(&lp->lock);
1902
1903         lp->mmio = ioremap(reg_addr, reg_len);
1904         if (!lp->mmio) {
1905                 printk(KERN_ERR "amd8111e: Cannot map device registers, "
1906                        "exiting\n");
1907                 err = -ENOMEM;
1908                 goto err_free_dev;
1909         }
1910
1911         /* Initializing MAC address */
1912         for(i = 0; i < ETH_ADDR_LEN; i++)
1913                 dev->dev_addr[i] = readb(lp->mmio + PADR + i);
1914
1915         /* Setting user defined parametrs */
1916         lp->ext_phy_option = speed_duplex[card_idx];
1917         if(coalesce[card_idx])
1918                 lp->options |= OPTION_INTR_COAL_ENABLE;
1919         if(dynamic_ipg[card_idx++])
1920                 lp->options |= OPTION_DYN_IPG_ENABLE;
1921
1922
1923         /* Initialize driver entry points */
1924         dev->netdev_ops = &amd8111e_netdev_ops;
1925         SET_ETHTOOL_OPS(dev, &ops);
1926         dev->irq =pdev->irq;
1927         dev->watchdog_timeo = AMD8111E_TX_TIMEOUT;
1928         netif_napi_add(dev, &lp->napi, amd8111e_rx_poll, 32);
1929
1930 #if AMD8111E_VLAN_TAG_USED
1931         dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1932 #endif
1933         /* Probe the external PHY */
1934         amd8111e_probe_ext_phy(dev);
1935
1936         /* setting mii default values */
1937         lp->mii_if.dev = dev;
1938         lp->mii_if.mdio_read = amd8111e_mdio_read;
1939         lp->mii_if.mdio_write = amd8111e_mdio_write;
1940         lp->mii_if.phy_id = lp->ext_phy_addr;
1941
1942         /* Set receive buffer length and set jumbo option*/
1943         amd8111e_set_rx_buff_len(dev);
1944
1945
1946         err = register_netdev(dev);
1947         if (err) {
1948                 printk(KERN_ERR "amd8111e: Cannot register net device, "
1949                        "exiting.\n");
1950                 goto err_iounmap;
1951         }
1952
1953         pci_set_drvdata(pdev, dev);
1954
1955         /* Initialize software ipg timer */
1956         if(lp->options & OPTION_DYN_IPG_ENABLE){
1957                 init_timer(&lp->ipg_data.ipg_timer);
1958                 lp->ipg_data.ipg_timer.data = (unsigned long) dev;
1959                 lp->ipg_data.ipg_timer.function = (void *)&amd8111e_config_ipg;
1960                 lp->ipg_data.ipg_timer.expires = jiffies +
1961                                                  IPG_CONVERGE_JIFFIES;
1962                 lp->ipg_data.ipg = DEFAULT_IPG;
1963                 lp->ipg_data.ipg_state = CSTATE;
1964         };
1965
1966         /*  display driver and device information */
1967
1968         chip_version = (readl(lp->mmio + CHIPID) & 0xf0000000)>>28;
1969         printk(KERN_INFO "%s: AMD-8111e Driver Version: %s\n",
1970                dev->name,MODULE_VERS);
1971         printk(KERN_INFO "%s: [ Rev %x ] PCI 10/100BaseT Ethernet %pM\n",
1972                dev->name, chip_version, dev->dev_addr);
1973         if (lp->ext_phy_id)
1974                 printk(KERN_INFO "%s: Found MII PHY ID 0x%08x at address 0x%02x\n",
1975                        dev->name, lp->ext_phy_id, lp->ext_phy_addr);
1976         else
1977                 printk(KERN_INFO "%s: Couldn't detect MII PHY, assuming address 0x01\n",
1978                        dev->name);
1979         return 0;
1980 err_iounmap:
1981         iounmap(lp->mmio);
1982
1983 err_free_dev:
1984         free_netdev(dev);
1985
1986 err_free_reg:
1987         pci_release_regions(pdev);
1988
1989 err_disable_pdev:
1990         pci_disable_device(pdev);
1991         pci_set_drvdata(pdev, NULL);
1992         return err;
1993
1994 }
1995
1996 static struct pci_driver amd8111e_driver = {
1997         .name           = MODULE_NAME,
1998         .id_table       = amd8111e_pci_tbl,
1999         .probe          = amd8111e_probe_one,
2000         .remove         = __devexit_p(amd8111e_remove_one),
2001         .suspend        = amd8111e_suspend,
2002         .resume         = amd8111e_resume
2003 };
2004
2005 static int __init amd8111e_init(void)
2006 {
2007         return pci_register_driver(&amd8111e_driver);
2008 }
2009
2010 static void __exit amd8111e_cleanup(void)
2011 {
2012         pci_unregister_driver(&amd8111e_driver);
2013 }
2014
2015 module_init(amd8111e_init);
2016 module_exit(amd8111e_cleanup);