target/linux/rdc-2.6/files/drivers/net/r6040.c

   1 /* r6040.c: A RDC R6040 FastEthernet driver for linux. */
   2 /*
   3         Re-written 2004 by Sten Wang.
   4
   5         Copyright 1994-2000 by Donald Becker.
   6         Copyright 1993 United States Government as represented by the
   7         Director, National Security Agency.      This software may be used and
   8         distributed according to the terms of the GNU General Public License,
   9         incorporated herein by reference.
  10
  11         This driver is for RDC R6040 FastEthernet MAC series.
  12         For kernel version after 2.4.22
  13
  14         Modification List
  15         ----------      ------------------------------------------------
  16         08-24-2006      Support at linux 2.6.10 above
  17         03-24-2006      Support NAPI
  18         03-21-2006      By Charies,change spin_lock_irqsave(lp->lock, flags) to
  19                         spin_lock_irqsave(&lp->lock, flags) in set_multicast_list
  20         03-15-2006      Modify the set_multicast_list ,due to when re-plug the ethernet,
  21                         it will forget the previous setting
  22         07-12-2005      Tim, modify the set_multicast_list
  23         03-28-2005      Tim, modify some error mac register offset in
  24                         function set_multicast_list
  25         03-27-2005      Tim, Add the internal state machine reset
  26                         Sten, If multicast address more than 4, enter PROM mode
  27                         Changed rdc to r6040
  28         12-22-2004      Sten Init MAC MBCR register=0x012A
  29                         PHY_CAP = 0x01E1
  30
  31         Need to Do LIst:
  32         1. If multicast address more than 4, use the multicast address hash
  33 */
  34
  35 #define DRV_NAME        "r6040"
  36 #define DRV_VERSION     "0.13"
  37 #define DRV_RELDATE     "24Aug2006"
  38
  39 /* PHY CHIP Address */
  40 #define PHY1_ADDR       1       /* For MAC1 */
  41 #define PHY2_ADDR       2       /* For MAC2 */
  42 #define PHY_MODE        0x3100  /* PHY CHIP Register 0 */
  43 #define PHY_CAP         0x01E1  /* PHY CHIP Register 4 */
  44
  45 /* Time in jiffies before concluding the transmitter is hung. */
  46 #define TX_TIMEOUT      (6000 * HZ / 1000)
  47 #define TIMER_WUT       (jiffies + HZ * 1)/* timer wakeup time : 1 second */
  48
  49 /* RDC MAC ID */
  50 #define RDC_MAC_ID      0x6040
  51
  52 /* RDC MAC I/O Size */
  53 #define R6040_IO_SIZE   256
  54
  55 /* RDC Chip PCI Command */
  56 #define R6040_PCI_CMD   0x0005  /* IO, Master */
  57
  58 /* MAX RDC MAC */
  59 #define MAX_MAC         2
  60
  61 /* MAC setting */
  62 #define TX_DCNT         0x80    /* TX descriptor count */
  63 #define RX_DCNT         0x80    /* RX descriptor count */
  64 #define MAX_BUF_SIZE    0x600
  65 #define ALLOC_DESC_SIZE ((TX_DCNT+RX_DCNT)*sizeof(struct r6040_descriptor)+0x10)
  66 #define MBCR_DEFAULT    0x012A  /* MAC Bus Control Register */
  67
  68 /* Debug enable or not */
  69 #define RDC_DEBUG       0
  70
  71 #if RDC_DEBUG > 1
  72 #define RDC_DBUG(msg, value) printk("%s %x\n", msg, value);
  73 #else
  74 #define RDC_DBUG(msg, value)
  75 #endif
  76
  77
  78 #include <linux/module.h>
  79 #include <linux/version.h>
  80 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
  81 #include <linux/moduleparam.h>
  82 #endif
  83 #include <linux/kernel.h>
  84 #include <linux/string.h>
  85 #include <linux/timer.h>
  86 #include <linux/errno.h>
  87 #include <linux/ioport.h>
  88 #include <linux/slab.h>
  89 #include <linux/interrupt.h>
  90 #include <linux/pci.h>
  91 #include <linux/netdevice.h>
  92 #include <linux/etherdevice.h>
  93 #include <linux/skbuff.h>
  94 #include <linux/init.h>
  95 #include <linux/delay.h>        /* for udelay() */
  96 #include <linux/mii.h>
  97 #include <linux/ethtool.h>
  98 #include <linux/crc32.h>
  99 #include <linux/spinlock.h>
 100
 101 #include <asm/processor.h>
 102 #include <asm/bitops.h>
 103 #include <asm/io.h>
 104 #include <asm/irq.h>
 105 #include <asm/uaccess.h>
 106
 107 MODULE_AUTHOR("Sten Wang <sten.wang@rdc.com.tw>");
 108 MODULE_LICENSE("GPL");
 109 #ifdef CONFIG_R6040_NAPI
 110 MODULE_DESCRIPTION("RDC R6040 NAPI PCI FastEthernet Driver");
 111 #else
 112 MODULE_DESCRIPTION("RDC R6040 PCI FastEthernet Driver");
 113 #endif
 114
 115 #define R6040_INT_MASK                  0x0011
 116
 117 struct r6040_descriptor {
 118         u16     status, len;            /* 0-3 */
 119         u32     buf;                    /* 4-7 */
 120         u32     ndesc;                  /* 8-B */
 121         u32     rev1;                   /* C-F */
 122         char    *vbufp;                 /* 10-13 */
 123         struct r6040_descriptor *vndescp;       /* 14-17 */
 124         struct sk_buff *skb_ptr;        /* 18-1B */
 125         u32     rev2;                   /* 1C-1F */
 126 } __attribute__(( aligned(32) ));
 127
 128 struct r6040_private {
 129         struct net_device_stats stats;
 130         spinlock_t lock;
 131         struct timer_list timer;
 132         struct pci_dev *pdev;
 133
 134         struct r6040_descriptor *rx_insert_ptr;
 135         struct r6040_descriptor *rx_remove_ptr;
 136         struct r6040_descriptor *tx_insert_ptr;
 137         struct r6040_descriptor *tx_remove_ptr;
 138         u16     tx_free_desc, rx_free_desc, phy_addr, phy_mode;
 139         u16     mcr0, mcr1;
 140         dma_addr_t desc_dma;
 141         char    *desc_pool;
 142 };
 143
 144 struct r6040_chip_info {
 145         const char *name;
 146         u16 pci_flags;
 147         int io_size;
 148         int drv_flags;
 149 };
 150
 151 #ifdef CONFIG_R6040_NAPI
 152 static int NAPI_status;
 153 #endif
 154
 155 static int __devinitdata printed_version;
 156 #ifdef CONFIG_R6040_NAPI
 157 static char version[] __devinitdata =
 158         KERN_INFO DRV_NAME ": RDC R6040 NAPI net driver, version "DRV_VERSION " (" DRV_RELDATE ")\n";
 159 #else
 160 static char version[] __devinitdata =
 161         KERN_INFO DRV_NAME ": RDC R6040 net driver, version "DRV_VERSION " (" DRV_RELDATE ")\n";
 162 #endif
 163 static struct r6040_chip_info r6040_chip_info[] __devinitdata =
 164 {
 165         { "RDC R6040 Knight", R6040_PCI_CMD, R6040_IO_SIZE, 0}
 166 };
 167
 168 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
 169 static int NUM_MAC_TABLE = 2 ;
 170 #endif
 171
 172 static int phy_table[] = { 0x1, 0x2};
 173 static u8 adr_table[2][8] = {{0x00, 0x00, 0x60, 0x00, 0x00, 0x01}, {0x00, 0x00, 0x60, 0x00, 0x00, 0x02}};
 174
 175 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 10)
 176         module_param_array(adr_table, int, &NUM_MAC_TABLE, 0644);
 177 #elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
 178         module_param_array(adr_table, int, NUM_MAC_TABLE, 0644);
 179 #else
 180         MODULE_PARM(adr_table, "2-4i");
 181 #endif
 182 MODULE_PARM_DESC(adr_table, "MAC Address (assigned)");
 183
 184 static int r6040_open(struct net_device *dev);
 185 static int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev);
 186 static irqreturn_t r6040_interrupt(int irq, void *dev_id);
 187 static struct net_device_stats *r6040_get_stats(struct net_device *dev);
 188 static int r6040_close(struct net_device *dev);
 189 static void set_multicast_list(struct net_device *dev);
 190 static struct ethtool_ops netdev_ethtool_ops;
 191 static void r6040_down(struct net_device *dev);
 192 static void r6040_up(struct net_device *dev);
 193 static void r6040_tx_timeout (struct net_device *dev);
 194 static void r6040_timer(unsigned long);
 195
 196 static int phy_mode_chk(struct net_device *dev);
 197 static int phy_read(int ioaddr, int phy_adr, int reg_idx);
 198 static void phy_write(int ioaddr, int phy_adr, int reg_idx, int dat);
 199 static void rx_buf_alloc(struct r6040_private *lp,struct net_device *dev);
 200 #ifdef CONFIG_R6040_NAPI
 201 static int r6040_poll(struct net_device *netdev, int *budget);
 202 #endif
 203
 204
 205 static int __devinit r6040_init_one (struct pci_dev *pdev,
 206                                          const struct pci_device_id *ent)
 207 {
 208         struct net_device *dev;
 209         struct r6040_private *lp;
 210         int ioaddr, io_size, err;
 211         static int card_idx = -1;
 212         int chip_id = (int)ent->driver_data;
 213
 214         RDC_DBUG("r6040_init_one()", 0);
 215
 216         if (printed_version++)
 217                 printk(version);
 218
 219         if ((err = pci_enable_device (pdev)))
 220                 return err;
 221
 222         /* this should always be supported */
 223         if (pci_set_dma_mask(pdev, 0xffffffff)) {
 224                 printk(KERN_ERR DRV_NAME "32-bit PCI DMA addresses not supported by the card!?\n");
 225                 return  -ENODEV;
 226         }
 227
 228         /* IO Size check */
 229         io_size = r6040_chip_info[chip_id].io_size;
 230         if (pci_resource_len  (pdev, 0) < io_size) {
 231                 return  -ENODEV;
 232         }
 233
 234         ioaddr = pci_resource_start (pdev, 0);  /* IO map base address */
 235         pci_set_master(pdev);
 236
 237         dev = alloc_etherdev(sizeof(struct r6040_private));
 238         if (dev == NULL)
 239                 return -ENOMEM;
 240         SET_MODULE_OWNER(dev);
 241
 242         if (pci_request_regions(pdev, DRV_NAME)) {
 243                 printk(KERN_ERR DRV_NAME ": Failed to request PCI regions\n");
 244                 err = -ENODEV;
 245                 goto err_out_disable;
 246         }
 247
 248         /* Init system & device */
 249         lp = dev->priv;
 250         dev->base_addr = ioaddr;
 251         dev->irq = pdev->irq;
 252
 253         spin_lock_init(&lp->lock);
 254         pci_set_drvdata(pdev, dev);
 255
 256         /* Set MAC address */
 257         card_idx++;
 258         memcpy(dev->dev_addr, (u8 *)&adr_table[card_idx][0], 6);
 259
 260         /* Link new device into r6040_root_dev */
 261         lp->pdev = pdev;
 262
 263         /* Init RDC private data */
 264         lp->mcr0 = 0x1002;
 265         lp->phy_addr = phy_table[card_idx];
 266
 267         /* The RDC-specific entries in the device structure. */
 268         dev->open = &r6040_open;
 269         dev->hard_start_xmit = &r6040_start_xmit;
 270         dev->stop = &r6040_close;
 271         dev->get_stats = &r6040_get_stats;
 272         dev->set_multicast_list = &set_multicast_list;
 273         dev->ethtool_ops = &netdev_ethtool_ops;
 274         dev->tx_timeout = &r6040_tx_timeout;
 275         dev->watchdog_timeo = TX_TIMEOUT;
 276 #ifdef CONFIG_R6040_NAPI
 277         dev->poll = &r6040_poll;
 278         dev->weight = 64;
 279 #endif
 280
 281         /* Register net device. After this dev->name assign */
 282         if ((err = register_netdev(dev))) {
 283                 printk(KERN_ERR DRV_NAME ": Failed to register net device\n");
 284                 goto err_out_res;
 285         }
 286
 287         netif_carrier_on(dev);
 288         return 0;
 289
 290 err_out_res:
 291         pci_release_regions(pdev);
 292 err_out_disable:
 293         pci_disable_device(pdev);
 294         pci_set_drvdata(pdev, NULL);
 295         kfree(dev);
 296
 297         return err;
 298 }
 299
 300 static void __devexit r6040_remove_one (struct pci_dev *pdev)
 301 {
 302         struct net_device *dev = pci_get_drvdata(pdev);
 303
 304         unregister_netdev(dev);
 305         pci_release_regions(pdev);
 306         kfree(dev);
 307         pci_disable_device(pdev);
 308         pci_set_drvdata(pdev, NULL);
 309 }
 310
 311 static int
 312 r6040_open(struct net_device *dev)
 313 {
 314         struct r6040_private *lp = dev->priv;
 315         int i;
 316
 317         RDC_DBUG("r6040_open()", 0);
 318
 319         /* Request IRQ and Register interrupt handler */
 320         i = request_irq(dev->irq, &r6040_interrupt, SA_SHIRQ, dev->name, dev);
 321         if (i) return i;
 322
 323         /* Allocate Descriptor memory */
 324         lp->desc_pool = pci_alloc_consistent(lp->pdev, ALLOC_DESC_SIZE, &lp->desc_dma);
 325         if (!lp->desc_pool) return -ENOMEM;
 326
 327         r6040_up(dev);
 328
 329         netif_start_queue(dev);
 330
 331         /* set and active a timer process */
 332         init_timer(&lp->timer);
 333         lp->timer.expires = TIMER_WUT;
 334         lp->timer.data = (unsigned long)dev;
 335         lp->timer.function = &r6040_timer;
 336         add_timer(&lp->timer);
 337
 338         return 0;
 339 }
 340
 341 static void
 342 r6040_tx_timeout (struct net_device *dev)
 343 {
 344         struct r6040_private *lp = dev->priv;
 345         //int ioaddr = dev->base_addr;
 346         //struct r6040_descriptor *descptr = lp->tx_remove_ptr;
 347
 348         RDC_DBUG("r6040_tx_timeout()", 0);
 349
 350         /* Transmitter timeout, serious problems. */
 351         /* Sten: Nothing need to do so far. */
 352         printk(KERN_ERR DRV_NAME ": Big Trobule, transmit timeout/n");
 353         lp->stats.tx_errors++;
 354         netif_stop_queue(dev);
 355
 356 //printk("<RDC> XMT timedout: CR0 %x, CR40 %x, CR3C %x, CR2C %x, CR30 %x, CR34 %x, CR38 %x\n", inw(ioaddr), inw(ioaddr+0x40), inw(ioaddr+0x3c), inw(ioaddr+0x2c), inw(ioaddr+0x30), inw(ioaddr+0x34), inw(ioaddr+0x38));
 357
 358 //printk("<RDC> XMT_TO: %08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
 359 }
 360
 361
 362 static int
 363 r6040_start_xmit(struct sk_buff *skb, struct net_device *dev)
 364 {
 365         struct r6040_private *lp = dev->priv;
 366         struct r6040_descriptor *descptr;
 367         int ioaddr = dev->base_addr;
 368         unsigned long flags;
 369
 370         RDC_DBUG("r6040_start_xmit()", 0);
 371
 372         if (skb == NULL)        /* NULL skb directly return */
 373                 return 0;
 374         if (skb->len >= MAX_BUF_SIZE) { /* Packet too long, drop it */
 375                 dev_kfree_skb(skb);
 376                 return 0;
 377         }
 378
 379         /* Critical Section */
 380         spin_lock_irqsave(&lp->lock, flags);
 381
 382         /* TX resource check */
 383         if (!lp->tx_free_desc) {
 384                 spin_unlock_irqrestore(&lp->lock, flags);
 385                 printk(KERN_ERR DRV_NAME ": NO TX DESC ");
 386                 return 1;
 387         }
 388
 389         /* Statistic Counter */
 390         lp->stats.tx_packets++;
 391         lp->stats.tx_bytes += skb->len;
 392
 393         /* Set TX descriptor & Transmit it */
 394         lp->tx_free_desc--;
 395         descptr = lp->tx_insert_ptr;
 396         if (skb->len < 0x3c) descptr->len = 0x3c;
 397         else descptr->len = skb->len;
 398         descptr->skb_ptr = skb;
 399         descptr->buf = cpu_to_le32(pci_map_single(lp->pdev, skb->data, skb->len, PCI_DMA_TODEVICE));
 400         descptr->status = 0x8000;
 401         outw(0x01, ioaddr + 0x14);
 402         lp->tx_insert_ptr = descptr->vndescp;
 403
 404 #if RDC_DEBUG
 405  printk("Xmit(): %08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
 406 #endif
 407
 408         /* If no tx resource, stop */
 409         if (!lp->tx_free_desc)
 410                 netif_stop_queue(dev);
 411
 412         dev->trans_start = jiffies;
 413         spin_unlock_irqrestore(&lp->lock, flags);
 414         return 0;
 415 }
 416
 417 /* The RDC interrupt handler. */
 418 static irqreturn_t
 419 r6040_interrupt(int irq, void *dev_id)
 420 {
 421         struct net_device *dev = dev_id;
 422         struct r6040_private *lp;
 423         struct r6040_descriptor *descptr;
 424         struct sk_buff *skb_ptr;
 425         int ioaddr, status;
 426         unsigned long flags;
 427 #ifdef CONFIG_R6040_NAPI
 428         int handled = 1;
 429 #else
 430         int handled = 0;
 431 #endif
 432
 433         RDC_DBUG("r6040_interrupt()", 0);
 434         if (dev == NULL) {
 435                 printk (KERN_ERR DRV_NAME ": INT() unknown device.\n");
 436                 return IRQ_RETVAL(handled);
 437         }
 438
 439         lp = (struct r6040_private *)dev->priv;
 440         spin_lock_irqsave(&lp->lock, flags);
 441
 442         /* Check MAC Interrupt status */
 443         ioaddr = dev->base_addr;
 444         outw(0x0, ioaddr + 0x40);       /* Mask Off RDC MAC interrupt */
 445         status = inw(ioaddr + 0x3c);    /* Read INTR status and clear */
 446
 447
 448 #ifdef CONFIG_R6040_NAPI
 449
 450             if(netif_rx_schedule_prep(dev))
 451                 {
 452                 NAPI_status = status ;
 453                 __netif_rx_schedule(dev);
 454                 }
 455
 456         spin_unlock_irqrestore(&lp->lock, flags);
 457         return IRQ_RETVAL(handled);
 458 #else
 459         /* TX interrupt request */
 460         if (status & 0x10) {
 461                 handled = 1;
 462                 descptr = lp->tx_remove_ptr;
 463                 while(lp->tx_free_desc < TX_DCNT) {
 464                         if (descptr->status & 0x8000) break; /* Not complte */
 465                         skb_ptr = descptr->skb_ptr;
 466                         pci_unmap_single(lp->pdev, descptr->buf, skb_ptr->len, PCI_DMA_TODEVICE);
 467                         dev_kfree_skb_irq(skb_ptr); /* Free buffer */
 468                         descptr->skb_ptr = 0;
 469                         descptr = descptr->vndescp; /* To next descriptor */
 470                         lp->tx_free_desc++;
 471                 }
 472                 lp->tx_remove_ptr = descptr;
 473                 if (lp->tx_free_desc) netif_wake_queue(dev);
 474         }
 475
 476         /* RX interrupt request */
 477         if (status & 0x01) {
 478                 handled = 1;
 479                 descptr = lp->rx_remove_ptr;
 480                 while(lp->rx_free_desc) {
 481                         if (descptr->status & 0x8000) break; /* No Rx packet */
 482                         skb_ptr = descptr->skb_ptr;
 483                         descptr->skb_ptr = 0;
 484                         skb_ptr->dev = dev;
 485                         skb_put(skb_ptr, descptr->len - 4);
 486                         pci_unmap_single(lp->pdev, descptr->buf, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
 487                         skb_ptr->protocol = eth_type_trans(skb_ptr, dev);
 488                         netif_rx(skb_ptr);  /* Send to upper layer */
 489                         lp->stats.rx_packets++;
 490                         lp->stats.rx_bytes += descptr->len;
 491                         descptr = descptr->vndescp; /* To next descriptor */
 492                         lp->rx_free_desc--;
 493                 }
 494                 lp->rx_remove_ptr = descptr;
 495         }
 496
 497         /* Allocate new RX buffer */
 498         if (lp->rx_free_desc < RX_DCNT) rx_buf_alloc(lp,dev);
 499
 500         outw(R6040_INT_MASK, ioaddr + 0x40);    /* TX/RX interrupt enable */
 501         spin_unlock_irqrestore(&lp->lock, flags);
 502 #endif
 503         return IRQ_RETVAL(handled);
 504 }
 505
 506
 507 static struct net_device_stats *
 508 r6040_get_stats(struct net_device *dev)
 509 {
 510         struct r6040_private *lp = dev->priv;
 511
 512         RDC_DBUG("r6040_get_stats()", 0);
 513         return &lp->stats;
 514 }
 515
 516 /*
 517  *     Set or clear the multicast filter for this adaptor.
 518  */
 519 static void
 520 set_multicast_list(struct net_device *dev)
 521 {
 522         struct r6040_private *lp = dev->priv;
 523         struct dev_mc_list *mcptr;
 524         int ioaddr = dev->base_addr;
 525         u16 *adrp, i;
 526         unsigned long flags;
 527
 528         RDC_DBUG("set_multicast_list()", 0);
 529
 530         /* MAC Address */
 531         adrp = (u16 *) dev->dev_addr;
 532         outw(adrp[0], ioaddr + 0x68);
 533         outw(adrp[1], ioaddr + 0x6A);
 534         outw(adrp[2], ioaddr + 0x6C);
 535
 536
 537 #if RDC_DEBUG
 538         printk("MAC ADDR: %04x %04x %04x\n", adrp[0], adrp[1], adrp[2]);
 539 #endif
 540
 541         /* Promiscous Mode */
 542         spin_lock_irqsave(&lp->lock, flags);
 543         i = inw(ioaddr) & ~0x0120;              /* Clear AMCP & PROM */
 544         if (dev->flags & IFF_PROMISC)
 545             {
 546                 i |= 0x0020;
 547                 lp->mcr0 |= 0x0020 ;
 548             }
 549         if (dev->mc_count > 4) i |= 0x0020;     /* Too many multicast address */
 550         outw(i, ioaddr);
 551         spin_unlock_irqrestore(&lp->lock, flags);
 552
 553         /* Multicast Address */
 554         if (dev->mc_count > 4)  /* Wait to do: Hash Table for multicast */
 555                 return;
 556
 557         /* Multicast Address 1~4 case */
 558         for (i = 0, mcptr = dev->mc_list; (i<dev->mc_count) && (i<4); i++) {
 559                 adrp = (u16 *)mcptr->dmi_addr;
 560                 outw(adrp[0], ioaddr + 0x70 + 8*i);
 561                 outw(adrp[1], ioaddr + 0x72 + 8*i);
 562                 outw(adrp[2], ioaddr + 0x74 + 8*i);
 563                 mcptr = mcptr->next;
 564 #if RDC_DEBUG
 565         printk("M_ADDR: %04x %04x %04x\n", adrp[0], adrp[1], adrp[2]);
 566 #endif
 567         }
 568         for (i = dev->mc_count; i < 4; i++) {
 569                 outw(0xffff, ioaddr + 0x68 + 8*i);
 570                 outw(0xffff, ioaddr + 0x6A + 8*i);
 571                 outw(0xffff, ioaddr + 0x6C + 8*i);
 572         }
 573 }
 574
 575 static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
 576 {
 577         struct r6040_private *rp = dev->priv;
 578
 579         strcpy (info->driver, DRV_NAME);
 580         strcpy (info->version, DRV_VERSION);
 581         strcpy (info->bus_info, pci_name(rp->pdev));
 582 }
 583
 584 static struct ethtool_ops netdev_ethtool_ops = {
 585         .get_drvinfo            = netdev_get_drvinfo,
 586 };
 587
 588 static int
 589 r6040_close(struct net_device *dev)
 590 {
 591         struct r6040_private *lp = dev->priv;
 592
 593         RDC_DBUG("r6040_close()", 0);
 594
 595         /* deleted timer */
 596         del_timer_sync(&lp->timer);
 597
 598         spin_lock_irq(&lp->lock);
 599
 600         netif_stop_queue(dev);
 601
 602         r6040_down(dev);
 603
 604         spin_unlock_irq(&lp->lock);
 605
 606         return 0;
 607 }
 608
 609 /**
 610         Stop RDC MAC and Free the allocated resource
 611  */
 612 static void r6040_down(struct net_device *dev)
 613 {
 614         struct r6040_private *lp = dev->priv;
 615         int i;
 616         int ioaddr = dev->base_addr;
 617
 618         RDC_DBUG("r6040_down()", 0);
 619
 620         /* Stop MAC */
 621         outw(0x0000, ioaddr + 0x40);    /* Mask Off Interrupt */
 622         outw(0x0001, ioaddr + 0x04);    /* Reset RDC MAC */
 623         i = 0;
 624         do{}while((i++ < 2048) && (inw(ioaddr + 0x04) & 0x1));
 625
 626         free_irq(dev->irq, dev);
 627
 628         /* Free RX buffer */
 629         for (i = 0; i < RX_DCNT; i++) {
 630                 if (lp->rx_insert_ptr->skb_ptr) {
 631                         pci_unmap_single(lp->pdev, lp->rx_insert_ptr->buf, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
 632                         dev_kfree_skb(lp->rx_insert_ptr->skb_ptr);
 633                         lp->rx_insert_ptr->skb_ptr = 0;
 634                 }
 635                 lp->rx_insert_ptr = lp->rx_insert_ptr->vndescp;
 636         }
 637
 638         /* Free TX buffer */
 639         for (i = 0; i < TX_DCNT; i++) {
 640                 if (lp->tx_insert_ptr->skb_ptr) {
 641                         pci_unmap_single(lp->pdev, lp->tx_insert_ptr->buf, MAX_BUF_SIZE, PCI_DMA_TODEVICE);
 642                         dev_kfree_skb(lp->tx_insert_ptr->skb_ptr);
 643                         lp->rx_insert_ptr->skb_ptr = 0;
 644                 }
 645                 lp->tx_insert_ptr = lp->tx_insert_ptr->vndescp;
 646         }
 647
 648         /* Free Descriptor memory */
 649         pci_free_consistent(lp->pdev, ALLOC_DESC_SIZE, lp->desc_pool, lp->desc_dma);
 650 }
 651
 652
 653
 654 #ifdef CONFIG_R6040_NAPI
 655 static int r6040_poll(struct net_device *dev, int *budget)
 656 {
 657         struct r6040_private *lp;
 658         struct r6040_descriptor *descptr;
 659         struct sk_buff *skb_ptr;
 660         int ioaddr, status;
 661         unsigned long flags;
 662
 663
 664         ioaddr = dev->base_addr;
 665         lp = (struct r6040_private *)dev->priv;
 666         unsigned long rx_work = dev->quota ;
 667         unsigned long rx ;
 668
 669
 670 #if 1
 671         /* TX interrupt request */
 672         if (NAPI_status & 0x10) {
 673
 674                 descptr = lp->tx_remove_ptr;
 675                 while(lp->tx_free_desc < TX_DCNT) {
 676                         if (descptr->status & 0x8000) break; /* Not complte */
 677                         skb_ptr = descptr->skb_ptr;
 678                         pci_unmap_single(lp->pdev, descptr->buf, skb_ptr->len, PCI_DMA_TODEVICE);
 679                         dev_kfree_skb_irq(skb_ptr); /* Free buffer */
 680                         descptr->skb_ptr = 0;
 681                         descptr = descptr->vndescp; /* To next descriptor */
 682                         lp->tx_free_desc++;
 683                 }
 684                 lp->tx_remove_ptr = descptr;
 685                 if (lp->tx_free_desc) netif_wake_queue(dev);
 686         }
 687 #endif
 688 #if 1
 689         /* RX interrupt request */
 690         if (NAPI_status & 0x01) {
 691
 692                 descptr = lp->rx_remove_ptr;
 693                 while(lp->rx_free_desc) {
 694                         if (descptr->status & 0x8000) break; /* No Rx packet */
 695                         skb_ptr = descptr->skb_ptr;
 696                         descptr->skb_ptr = 0;
 697                         skb_ptr->dev = dev;
 698                         skb_put(skb_ptr, descptr->len - 4);
 699                         pci_unmap_single(lp->pdev, descptr->buf, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
 700                         skb_ptr->protocol = eth_type_trans(skb_ptr, dev);
 701                         netif_receive_skb(skb_ptr); /* Send to upper layer */
 702                         lp->stats.rx_packets++;
 703                         lp->stats.rx_bytes += descptr->len;
 704                         descptr = descptr->vndescp; /* To next descriptor */
 705                         lp->rx_free_desc--;
 706                 }
 707                 lp->rx_remove_ptr = descptr;
 708
 709         }
 710         /* Allocate new RX buffer */
 711         if (lp->rx_free_desc < RX_DCNT) rx_buf_alloc(lp,dev);
 712
 713         local_irq_disable();
 714         netif_rx_complete(dev);
 715         outw(R6040_INT_MASK,ioaddr + 0x40);
 716         local_irq_enable();
 717         return 0;
 718 #endif
 719 }
 720 #endif
 721
 722 /* Init RDC MAC */
 723 static void r6040_up(struct net_device *dev)
 724 {
 725         struct r6040_private *lp = dev->priv;
 726         struct r6040_descriptor *descptr;
 727         int i;
 728         int ioaddr = dev->base_addr;
 729         u32 tmp_addr;
 730         dma_addr_t desc_dma, start_dma;
 731
 732         RDC_DBUG("r6040_up()", 0);
 733
 734         /* Initilize */
 735         lp->tx_free_desc = TX_DCNT;
 736         lp->rx_free_desc = 0;
 737
 738         /* Init descriptor */
 739         memset(lp->desc_pool, 0, ALLOC_DESC_SIZE); /* Let all descriptor = 0 */
 740         lp->tx_insert_ptr = (struct r6040_descriptor *)lp->desc_pool;
 741         lp->tx_remove_ptr = lp->tx_insert_ptr;
 742         lp->rx_insert_ptr = (struct r6040_descriptor *)lp->tx_insert_ptr+TX_DCNT;
 743         lp->rx_remove_ptr = lp->rx_insert_ptr;
 744
 745         /* Init TX descriptor */
 746         descptr = lp->tx_insert_ptr;
 747         desc_dma = lp->desc_dma;
 748         start_dma = desc_dma;
 749         for (i = 0; i < TX_DCNT; i++) {
 750                 descptr->ndesc = cpu_to_le32(desc_dma + sizeof(struct r6040_descriptor));
 751                 descptr->vndescp = (descptr + 1);
 752                 descptr = (descptr + 1);
 753                 desc_dma += sizeof(struct r6040_descriptor);
 754         }
 755         (descptr - 1)->ndesc = cpu_to_le32(start_dma);
 756         (descptr - 1)->vndescp = lp->tx_insert_ptr;
 757
 758         /* Init RX descriptor */
 759         start_dma = desc_dma;
 760         descptr = lp->rx_insert_ptr;
 761         for (i = 0; i < RX_DCNT; i++) {
 762                 descptr->ndesc = cpu_to_le32(desc_dma + sizeof(struct r6040_descriptor));
 763                 descptr->vndescp = (descptr + 1);
 764                 descptr = (descptr + 1);
 765                 desc_dma += sizeof(struct r6040_descriptor);
 766         }
 767         (descptr - 1)->ndesc = cpu_to_le32(start_dma);
 768         (descptr - 1)->vndescp = lp->rx_insert_ptr;
 769
 770         /* Allocate buffer for RX descriptor */
 771         rx_buf_alloc(lp,dev);
 772
 773 #if RDC_DEBUG
 774 descptr = lp->tx_insert_ptr;
 775 for (i = 0; i < TX_DCNT; i++) {
 776  printk("%08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
 777  descptr = descptr->vndescp;
 778 }
 779 descptr = lp->rx_insert_ptr;
 780 for (i = 0; i < RX_DCNT; i++) {
 781  printk("%08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
 782  descptr = descptr->vndescp;
 783 }
 784 #endif
 785
 786         /* MAC operation register */
 787         outw(0x01, ioaddr+0x04);        /* Reset MAC */
 788         outw(2   , ioaddr+0xAC);        /* Reset internal state machine */
 789         outw(0   , ioaddr+0xAC);
 790         udelay(5000);
 791
 792         /* TX and RX descriptor start Register */
 793         tmp_addr = cpu_to_le32(lp->tx_insert_ptr);
 794         tmp_addr = virt_to_bus((volatile void *)tmp_addr);
 795         outw((u16) tmp_addr, ioaddr+0x2c);
 796         outw(tmp_addr >> 16, ioaddr+0x30);
 797         tmp_addr = cpu_to_le32(lp->rx_insert_ptr);
 798         tmp_addr = virt_to_bus((volatile void *)tmp_addr);
 799         outw((u16) tmp_addr, ioaddr+0x34);
 800         outw(tmp_addr >> 16, ioaddr+0x38);
 801
 802         /* Buffer Size Register */
 803         outw(MAX_BUF_SIZE, ioaddr+0x18);
 804
 805         /* PHY Mode Check */
 806         phy_write(ioaddr, lp->phy_addr, 4, PHY_CAP);
 807         phy_write(ioaddr, lp->phy_addr, 0, PHY_MODE);
 808
 809         if (PHY_MODE == 0x3100)
 810                 lp->phy_mode = phy_mode_chk(dev);
 811         else lp->phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
 812
 813         /* MAC Bus Control Register */
 814         outw(MBCR_DEFAULT, ioaddr+0x8);
 815
 816         /* MAC TX/RX Enable */
 817         lp->mcr0 |= lp->phy_mode;
 818         outw(lp->mcr0, ioaddr);
 819
 820         /* Interrupt Mask Register */
 821         outw(R6040_INT_MASK, ioaddr + 0x40);
 822 }
 823
 824 /*
 825   A periodic timer routine
 826         Polling PHY Chip Link Status
 827 */
 828 static void r6040_timer(unsigned long data)
 829 {
 830         struct net_device *dev=(struct net_device *)data;
 831         struct r6040_private *lp = dev->priv;
 832         u16 ioaddr = dev->base_addr, phy_mode;
 833
 834         RDC_DBUG("r6040_timer()", 0);
 835
 836         /* Polling PHY Chip Status */
 837         if (PHY_MODE == 0x3100)
 838                 phy_mode = phy_mode_chk(dev);
 839         else phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
 840
 841         if (phy_mode != lp->phy_mode) {
 842                 lp->phy_mode = phy_mode;
 843                 lp->mcr0 = (lp->mcr0 & 0x7fff) | phy_mode;
 844                 outw(lp->mcr0, ioaddr);
 845                 printk("<RDC> Link Change %x \n", inw(ioaddr));
 846         }
 847
 848         /* Debug */
 849 //      printk("<RDC> Timer: CR0 %x CR40 %x CR3C %x\n", inw(ioaddr), inw(ioaddr+0x40), inw(ioaddr+0x3c));
 850
 851         /* Timer active again */
 852         lp->timer.expires = TIMER_WUT;
 853         add_timer(&lp->timer);
 854 }
 855
 856 /* Allocate skb buffer for rx descriptor */
 857 static void rx_buf_alloc(struct r6040_private *lp,struct net_device *dev)
 858 {
 859         struct r6040_descriptor *descptr;
 860         int ioaddr = dev->base_addr ;
 861
 862         RDC_DBUG("rx_buf_alloc()", 0);
 863         descptr = lp->rx_insert_ptr;
 864         while(lp->rx_free_desc < RX_DCNT){
 865                 descptr->skb_ptr = dev_alloc_skb(MAX_BUF_SIZE);
 866                 if (!descptr->skb_ptr) break;
 867                 descptr->buf = cpu_to_le32(pci_map_single(lp->pdev, descptr->skb_ptr->tail, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE));
 868                 descptr->status = 0x8000;
 869                 descptr = descptr->vndescp;
 870                 lp->rx_free_desc++;
 871                 outw(lp->mcr0 | 0x0002, ioaddr);        //Trigger Rx DMA
 872         }
 873         lp->rx_insert_ptr = descptr;
 874 }
 875
 876 /* Status of PHY CHIP */
 877 static int phy_mode_chk(struct net_device *dev)
 878 {
 879         struct r6040_private *lp = dev->priv;
 880         int ioaddr = dev->base_addr, phy_dat;
 881
 882         RDC_DBUG("phy_mode_chk()", 0);
 883
 884         /* PHY Link Status Check */
 885         phy_dat = phy_read(ioaddr, lp->phy_addr, 1);
 886         if (!(phy_dat & 0x4)) return 0x8000;    /* Link Failed, full duplex */
 887
 888         /* PHY Chip Auto-Negotiation Status */
 889         phy_dat = phy_read(ioaddr, lp->phy_addr, 1);
 890         if (phy_dat & 0x0020) {
 891                 /* Auto Negotiation Mode */
 892                 phy_dat = phy_read(ioaddr, lp->phy_addr, 5);
 893                 phy_dat &= phy_read(ioaddr, lp->phy_addr, 4);
 894                 if (phy_dat & 0x140) phy_dat = 0x8000;
 895                 else phy_dat = 0;
 896         } else {
 897                 /* Force Mode */
 898                 phy_dat = phy_read(ioaddr, lp->phy_addr, 0);
 899                 if (phy_dat & 0x100) phy_dat = 0x8000;
 900                 else phy_dat = 0x0000;
 901         }
 902
 903         return phy_dat;
 904 };
 905
 906 /* Read a word data from PHY Chip */
 907 static int phy_read(int ioaddr, int phy_addr, int reg_idx)
 908 {
 909         int i = 0;
 910
 911         RDC_DBUG("phy_read()", 0);
 912         outw(0x2000 + reg_idx + (phy_addr << 8), ioaddr + 0x20);
 913         do{}while( (i++ < 2048) && (inw(ioaddr + 0x20) & 0x2000) );
 914
 915         return inw(ioaddr + 0x24);
 916 }
 917
 918 /* Write a word data from PHY Chip */
 919 static void phy_write(int ioaddr, int phy_addr, int reg_idx, int dat)
 920 {
 921         int i = 0;
 922
 923         RDC_DBUG("phy_write()", 0);
 924         outw(dat, ioaddr + 0x28);
 925         outw(0x4000 + reg_idx + (phy_addr << 8), ioaddr + 0x20);
 926         do{}while( (i++ < 2048) && (inw(ioaddr + 0x20) & 0x4000) );
 927 }
 928
 929 enum {
 930         RDC_6040 = 0
 931 };
 932
 933 static struct pci_device_id r6040_pci_tbl[] = {
 934         {0x17F3, 0x6040, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RDC_6040},
 935         //{0x1106, 0x3065, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RDC_6040},
 936         {0,}                    /* terminate list */
 937 };
 938 MODULE_DEVICE_TABLE(pci, r6040_pci_tbl);
 939
 940 static struct pci_driver r6040_driver = {
 941         .name           = "r6040",
 942         .id_table       = r6040_pci_tbl,
 943         .probe          = r6040_init_one,
 944         .remove         = __devexit_p(r6040_remove_one),
 945 };
 946
 947
 948 static int __init r6040_init (void)
 949 {
 950         RDC_DBUG("r6040_init()", 0);
 951
 952         printk(version);
 953         printed_version = 1;
 954
 955         return pci_module_init (&r6040_driver);
 956 }
 957
 958
 959 static void __exit r6040_cleanup (void)
 960 {
 961         RDC_DBUG("r6040_cleanup()", 0);
 962         pci_unregister_driver (&r6040_driver);
 963 }
 964
 965 module_init(r6040_init);
 966 module_exit(r6040_cleanup);
 967
 968
 969 /*
 970  * Local variables:
 971  *  compile-command: "gcc -DMODULE -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -c r6040.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`"
 972  *  c-indent-level: 4
 973  *  c-basic-offset: 4
 974  *  tab-width: 4
 975  * End:
 976  */