drivers/net/ethernet/8390/ne2k-pci.c

   1 /* ne2k-pci.c: A NE2000 clone on PCI bus driver for Linux. */
   2 /*
   3         A Linux device driver for PCI NE2000 clones.
   4
   5         Authors and other copyright holders:
   6         1992-2000 by Donald Becker, NE2000 core and various modifications.
   7         1995-1998 by Paul Gortmaker, core modifications and PCI support.
   8         Copyright 1993 assigned to the United States Government as represented
   9         by the Director, National Security Agency.
  10
  11         This software may be used and distributed according to the terms of
  12         the GNU General Public License (GPL), incorporated herein by reference.
  13         Drivers based on or derived from this code fall under the GPL and must
  14         retain the authorship, copyright and license notice.  This file is not
  15         a complete program and may only be used when the entire operating
  16         system is licensed under the GPL.
  17
  18         The author may be reached as becker@scyld.com, or C/O
  19         Scyld Computing Corporation
  20         410 Severn Ave., Suite 210
  21         Annapolis MD 21403
  22
  23         Issues remaining:
  24         People are making PCI ne2000 clones! Oh the horror, the horror...
  25         Limited full-duplex support.
  26 */
  27
  28 #define DRV_NAME        "ne2k-pci"
  29 #define DRV_VERSION     "1.03"
  30 #define DRV_RELDATE     "9/22/2003"
  31
  32
  33 /* The user-configurable values.
  34    These may be modified when a driver module is loaded.*/
  35
  36 #define MAX_UNITS 8                             /* More are supported, limit only on options */
  37 /* Used to pass the full-duplex flag, etc. */
  38 static int full_duplex[MAX_UNITS];
  39 static int options[MAX_UNITS];
  40
  41 /* Force a non std. amount of memory.  Units are 256 byte pages. */
  42 /* #define PACKETBUF_MEMSIZE    0x40 */
  43
  44
  45 #include <linux/module.h>
  46 #include <linux/kernel.h>
  47 #include <linux/errno.h>
  48 #include <linux/pci.h>
  49 #include <linux/init.h>
  50 #include <linux/interrupt.h>
  51 #include <linux/ethtool.h>
  52 #include <linux/netdevice.h>
  53 #include <linux/etherdevice.h>
  54
  55 #include <asm/io.h>
  56 #include <asm/irq.h>
  57 #include <asm/uaccess.h>
  58
  59 #include "8390.h"
  60
  61 static u32 ne2k_msg_enable;
  62
  63 /* These identify the driver base version and may not be removed. */
  64 static const char version[] =
  65         KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE
  66         " D. Becker/P. Gortmaker\n";
  67
  68 #if defined(__powerpc__)
  69 #define inl_le(addr)  le32_to_cpu(inl(addr))
  70 #define inw_le(addr)  le16_to_cpu(inw(addr))
  71 #endif
  72
  73 #define PFX DRV_NAME ": "
  74
  75 MODULE_AUTHOR("Donald Becker / Paul Gortmaker");
  76 MODULE_DESCRIPTION("PCI NE2000 clone driver");
  77 MODULE_LICENSE("GPL");
  78
  79 module_param_named(msg_enable, ne2k_msg_enable, uint, (S_IRUSR|S_IRGRP|S_IROTH));
  80 module_param_array(options, int, NULL, 0);
  81 module_param_array(full_duplex, int, NULL, 0);
  82 MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
  83 MODULE_PARM_DESC(options, "Bit 5: full duplex");
  84 MODULE_PARM_DESC(full_duplex, "full duplex setting(s) (1)");
  85
  86 /* Some defines that people can play with if so inclined. */
  87
  88 /* Use 32 bit data-movement operations instead of 16 bit. */
  89 #define USE_LONGIO
  90
  91 /* Do we implement the read before write bugfix ? */
  92 /* #define NE_RW_BUGFIX */
  93
  94 /* Flags.  We rename an existing ei_status field to store flags! */
  95 /* Thus only the low 8 bits are usable for non-init-time flags. */
  96 #define ne2k_flags reg0
  97 enum {
  98         ONLY_16BIT_IO=8, ONLY_32BIT_IO=4,       /* Chip can do only 16/32-bit xfers. */
  99         FORCE_FDX=0x20,                                         /* User override. */
 100         REALTEK_FDX=0x40, HOLTEK_FDX=0x80,
 101         STOP_PG_0x60=0x100,
 102 };
 103
 104 enum ne2k_pci_chipsets {
 105         CH_RealTek_RTL_8029 = 0,
 106         CH_Winbond_89C940,
 107         CH_Compex_RL2000,
 108         CH_KTI_ET32P2,
 109         CH_NetVin_NV5000SC,
 110         CH_Via_86C926,
 111         CH_SureCom_NE34,
 112         CH_Winbond_W89C940F,
 113         CH_Holtek_HT80232,
 114         CH_Holtek_HT80229,
 115         CH_Winbond_89C940_8c4a,
 116 };
 117
 118
 119 static struct {
 120         char *name;
 121         int flags;
 122 } pci_clone_list[] = {
 123         {"RealTek RTL-8029", REALTEK_FDX},
 124         {"Winbond 89C940", 0},
 125         {"Compex RL2000", 0},
 126         {"KTI ET32P2", 0},
 127         {"NetVin NV5000SC", 0},
 128         {"Via 86C926", ONLY_16BIT_IO},
 129         {"SureCom NE34", 0},
 130         {"Winbond W89C940F", 0},
 131         {"Holtek HT80232", ONLY_16BIT_IO | HOLTEK_FDX},
 132         {"Holtek HT80229", ONLY_32BIT_IO | HOLTEK_FDX | STOP_PG_0x60 },
 133         {"Winbond W89C940(misprogrammed)", 0},
 134         {NULL,}
 135 };
 136
 137
 138 static const struct pci_device_id ne2k_pci_tbl[] = {
 139         { 0x10ec, 0x8029, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RealTek_RTL_8029 },
 140         { 0x1050, 0x0940, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940 },
 141         { 0x11f6, 0x1401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Compex_RL2000 },
 142         { 0x8e2e, 0x3000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_KTI_ET32P2 },
 143         { 0x4a14, 0x5000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_NetVin_NV5000SC },
 144         { 0x1106, 0x0926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Via_86C926 },
 145         { 0x10bd, 0x0e34, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_SureCom_NE34 },
 146         { 0x1050, 0x5a5a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_W89C940F },
 147         { 0x12c3, 0x0058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80232 },
 148         { 0x12c3, 0x5598, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80229 },
 149         { 0x8c4a, 0x1980, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940_8c4a },
 150         { 0, }
 151 };
 152 MODULE_DEVICE_TABLE(pci, ne2k_pci_tbl);
 153
 154
 155 /* ---- No user-serviceable parts below ---- */
 156
 157 #define NE_BASE  (dev->base_addr)
 158 #define NE_CMD          0x00
 159 #define NE_DATAPORT     0x10    /* NatSemi-defined port window offset. */
 160 #define NE_RESET        0x1f    /* Issue a read to reset, a write to clear. */
 161 #define NE_IO_EXTENT    0x20
 162
 163 #define NESM_START_PG   0x40    /* First page of TX buffer */
 164 #define NESM_STOP_PG    0x80    /* Last page +1 of RX ring */
 165
 166
 167 static int ne2k_pci_open(struct net_device *dev);
 168 static int ne2k_pci_close(struct net_device *dev);
 169
 170 static void ne2k_pci_reset_8390(struct net_device *dev);
 171 static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
 172                           int ring_page);
 173 static void ne2k_pci_block_input(struct net_device *dev, int count,
 174                           struct sk_buff *skb, int ring_offset);
 175 static void ne2k_pci_block_output(struct net_device *dev, const int count,
 176                 const unsigned char *buf, const int start_page);
 177 static const struct ethtool_ops ne2k_pci_ethtool_ops;
 178
 179
 180
 181 /* There is no room in the standard 8390 structure for extra info we need,
 182    so we build a meta/outer-wrapper structure.. */
 183 struct ne2k_pci_card {
 184         struct net_device *dev;
 185         struct pci_dev *pci_dev;
 186 };
 187
 188
 189
 190 /*
 191   NEx000-clone boards have a Station Address (SA) PROM (SAPROM) in the packet
 192   buffer memory space.  By-the-spec NE2000 clones have 0x57,0x57 in bytes
 193   0x0e,0x0f of the SAPROM, while other supposed NE2000 clones must be
 194   detected by their SA prefix.
 195
 196   Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
 197   mode results in doubled values, which can be detected and compensated for.
 198
 199   The probe is also responsible for initializing the card and filling
 200   in the 'dev' and 'ei_status' structures.
 201 */
 202
 203 static const struct net_device_ops ne2k_netdev_ops = {
 204         .ndo_open               = ne2k_pci_open,
 205         .ndo_stop               = ne2k_pci_close,
 206         .ndo_start_xmit         = ei_start_xmit,
 207         .ndo_tx_timeout         = ei_tx_timeout,
 208         .ndo_get_stats          = ei_get_stats,
 209         .ndo_set_rx_mode        = ei_set_multicast_list,
 210         .ndo_validate_addr      = eth_validate_addr,
 211         .ndo_set_mac_address    = eth_mac_addr,
 212         .ndo_change_mtu         = eth_change_mtu,
 213 #ifdef CONFIG_NET_POLL_CONTROLLER
 214         .ndo_poll_controller = ei_poll,
 215 #endif
 216 };
 217
 218 static int ne2k_pci_init_one(struct pci_dev *pdev,
 219                              const struct pci_device_id *ent)
 220 {
 221         struct net_device *dev;
 222         int i;
 223         unsigned char SA_prom[32];
 224         int start_page, stop_page;
 225         int irq, reg0, chip_idx = ent->driver_data;
 226         static unsigned int fnd_cnt;
 227         long ioaddr;
 228         int flags = pci_clone_list[chip_idx].flags;
 229         struct ei_device *ei_local;
 230
 231 /* when built into the kernel, we only print version if device is found */
 232 #ifndef MODULE
 233         static int printed_version;
 234         if (!printed_version++)
 235                 printk(version);
 236 #endif
 237
 238         fnd_cnt++;
 239
 240         i = pci_enable_device (pdev);
 241         if (i)
 242                 return i;
 243
 244         ioaddr = pci_resource_start (pdev, 0);
 245         irq = pdev->irq;
 246
 247         if (!ioaddr || ((pci_resource_flags (pdev, 0) & IORESOURCE_IO) == 0)) {
 248                 dev_err(&pdev->dev, "no I/O resource at PCI BAR #0\n");
 249                 return -ENODEV;
 250         }
 251
 252         if (request_region (ioaddr, NE_IO_EXTENT, DRV_NAME) == NULL) {
 253                 dev_err(&pdev->dev, "I/O resource 0x%x @ 0x%lx busy\n",
 254                         NE_IO_EXTENT, ioaddr);
 255                 return -EBUSY;
 256         }
 257
 258         reg0 = inb(ioaddr);
 259         if (reg0 == 0xFF)
 260                 goto err_out_free_res;
 261
 262         /* Do a preliminary verification that we have a 8390. */
 263         {
 264                 int regd;
 265                 outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
 266                 regd = inb(ioaddr + 0x0d);
 267                 outb(0xff, ioaddr + 0x0d);
 268                 outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
 269                 inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
 270                 if (inb(ioaddr + EN0_COUNTER0) != 0) {
 271                         outb(reg0, ioaddr);
 272                         outb(regd, ioaddr + 0x0d);      /* Restore the old values. */
 273                         goto err_out_free_res;
 274                 }
 275         }
 276
 277         /* Allocate net_device, dev->priv; fill in 8390 specific dev fields. */
 278         dev = alloc_ei_netdev();
 279         if (!dev) {
 280                 dev_err(&pdev->dev, "cannot allocate ethernet device\n");
 281                 goto err_out_free_res;
 282         }
 283         dev->netdev_ops = &ne2k_netdev_ops;
 284         ei_local = netdev_priv(dev);
 285         ei_local->msg_enable = ne2k_msg_enable;
 286
 287         SET_NETDEV_DEV(dev, &pdev->dev);
 288
 289         /* Reset card. Who knows what dain-bramaged state it was left in. */
 290         {
 291                 unsigned long reset_start_time = jiffies;
 292
 293                 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
 294
 295                 /* This looks like a horrible timing loop, but it should never take
 296                    more than a few cycles.
 297                 */
 298                 while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
 299                         /* Limit wait: '2' avoids jiffy roll-over. */
 300                         if (jiffies - reset_start_time > 2) {
 301                                 dev_err(&pdev->dev,
 302                                         "Card failure (no reset ack).\n");
 303                                 goto err_out_free_netdev;
 304                         }
 305
 306                 outb(0xff, ioaddr + EN0_ISR);           /* Ack all intr. */
 307         }
 308
 309         /* Read the 16 bytes of station address PROM.
 310            We must first initialize registers, similar to NS8390_init(eifdev, 0).
 311            We can't reliably read the SAPROM address without this.
 312            (I learned the hard way!). */
 313         {
 314                 struct {unsigned char value, offset; } program_seq[] = {
 315                         {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
 316                         {0x49,  EN0_DCFG},      /* Set word-wide access. */
 317                         {0x00,  EN0_RCNTLO},    /* Clear the count regs. */
 318                         {0x00,  EN0_RCNTHI},
 319                         {0x00,  EN0_IMR},       /* Mask completion irq. */
 320                         {0xFF,  EN0_ISR},
 321                         {E8390_RXOFF, EN0_RXCR},        /* 0x20  Set to monitor */
 322                         {E8390_TXOFF, EN0_TXCR},        /* 0x02  and loopback mode. */
 323                         {32,    EN0_RCNTLO},
 324                         {0x00,  EN0_RCNTHI},
 325                         {0x00,  EN0_RSARLO},    /* DMA starting at 0x0000. */
 326                         {0x00,  EN0_RSARHI},
 327                         {E8390_RREAD+E8390_START, E8390_CMD},
 328                 };
 329                 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
 330                         outb(program_seq[i].value, ioaddr + program_seq[i].offset);
 331
 332         }
 333
 334         /* Note: all PCI cards have at least 16 bit access, so we don't have
 335            to check for 8 bit cards.  Most cards permit 32 bit access. */
 336         if (flags & ONLY_32BIT_IO) {
 337                 for (i = 0; i < 4 ; i++)
 338                         ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT));
 339         } else
 340                 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i++)
 341                         SA_prom[i] = inb(ioaddr + NE_DATAPORT);
 342
 343         /* We always set the 8390 registers for word mode. */
 344         outb(0x49, ioaddr + EN0_DCFG);
 345         start_page = NESM_START_PG;
 346
 347         stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG;
 348
 349         /* Set up the rest of the parameters. */
 350         dev->irq = irq;
 351         dev->base_addr = ioaddr;
 352         pci_set_drvdata(pdev, dev);
 353
 354         ei_status.name = pci_clone_list[chip_idx].name;
 355         ei_status.tx_start_page = start_page;
 356         ei_status.stop_page = stop_page;
 357         ei_status.word16 = 1;
 358         ei_status.ne2k_flags = flags;
 359         if (fnd_cnt < MAX_UNITS) {
 360                 if (full_duplex[fnd_cnt] > 0  ||  (options[fnd_cnt] & FORCE_FDX))
 361                         ei_status.ne2k_flags |= FORCE_FDX;
 362         }
 363
 364         ei_status.rx_start_page = start_page + TX_PAGES;
 365 #ifdef PACKETBUF_MEMSIZE
 366         /* Allow the packet buffer size to be overridden by know-it-alls. */
 367         ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
 368 #endif
 369
 370         ei_status.reset_8390 = &ne2k_pci_reset_8390;
 371         ei_status.block_input = &ne2k_pci_block_input;
 372         ei_status.block_output = &ne2k_pci_block_output;
 373         ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr;
 374         ei_status.priv = (unsigned long) pdev;
 375
 376         dev->ethtool_ops = &ne2k_pci_ethtool_ops;
 377         NS8390_init(dev, 0);
 378
 379         memcpy(dev->dev_addr, SA_prom, dev->addr_len);
 380
 381         i = register_netdev(dev);
 382         if (i)
 383                 goto err_out_free_netdev;
 384
 385         netdev_info(dev, "%s found at %#lx, IRQ %d, %pM.\n",
 386                     pci_clone_list[chip_idx].name, ioaddr, dev->irq,
 387                     dev->dev_addr);
 388
 389         return 0;
 390
 391 err_out_free_netdev:
 392         free_netdev (dev);
 393 err_out_free_res:
 394         release_region (ioaddr, NE_IO_EXTENT);
 395         return -ENODEV;
 396 }
 397
 398 /*
 399  * Magic incantation sequence for full duplex on the supported cards.
 400  */
 401 static inline int set_realtek_fdx(struct net_device *dev)
 402 {
 403         long ioaddr = dev->base_addr;
 404
 405         outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */
 406         outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */
 407         outb(0x40, ioaddr + 0x06); /* Enable full duplex */
 408         outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */
 409         outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */
 410         return 0;
 411 }
 412
 413 static inline int set_holtek_fdx(struct net_device *dev)
 414 {
 415         long ioaddr = dev->base_addr;
 416
 417         outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20);
 418         return 0;
 419 }
 420
 421 static int ne2k_pci_set_fdx(struct net_device *dev)
 422 {
 423         if (ei_status.ne2k_flags & REALTEK_FDX)
 424                 return set_realtek_fdx(dev);
 425         else if (ei_status.ne2k_flags & HOLTEK_FDX)
 426                 return set_holtek_fdx(dev);
 427
 428         return -EOPNOTSUPP;
 429 }
 430
 431 static int ne2k_pci_open(struct net_device *dev)
 432 {
 433         int ret = request_irq(dev->irq, ei_interrupt, IRQF_SHARED, dev->name, dev);
 434         if (ret)
 435                 return ret;
 436
 437         if (ei_status.ne2k_flags & FORCE_FDX)
 438                 ne2k_pci_set_fdx(dev);
 439
 440         ei_open(dev);
 441         return 0;
 442 }
 443
 444 static int ne2k_pci_close(struct net_device *dev)
 445 {
 446         ei_close(dev);
 447         free_irq(dev->irq, dev);
 448         return 0;
 449 }
 450
 451 /* Hard reset the card.  This used to pause for the same period that a
 452    8390 reset command required, but that shouldn't be necessary. */
 453 static void ne2k_pci_reset_8390(struct net_device *dev)
 454 {
 455         unsigned long reset_start_time = jiffies;
 456         struct ei_device *ei_local = netdev_priv(dev);
 457
 458         netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n",
 459                   jiffies);
 460
 461         outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
 462
 463         ei_status.txing = 0;
 464         ei_status.dmaing = 0;
 465
 466         /* This check _should_not_ be necessary, omit eventually. */
 467         while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
 468                 if (jiffies - reset_start_time > 2) {
 469                         netdev_err(dev, "ne2k_pci_reset_8390() did not complete.\n");
 470                         break;
 471                 }
 472         outb(ENISR_RESET, NE_BASE + EN0_ISR);   /* Ack intr. */
 473 }
 474
 475 /* Grab the 8390 specific header. Similar to the block_input routine, but
 476    we don't need to be concerned with ring wrap as the header will be at
 477    the start of a page, so we optimize accordingly. */
 478
 479 static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
 480 {
 481
 482         long nic_base = dev->base_addr;
 483
 484         /* This *shouldn't* happen. If it does, it's the last thing you'll see */
 485         if (ei_status.dmaing) {
 486                 netdev_err(dev, "DMAing conflict in ne2k_pci_get_8390_hdr "
 487                            "[DMAstat:%d][irqlock:%d].\n",
 488                            ei_status.dmaing, ei_status.irqlock);
 489                 return;
 490         }
 491
 492         ei_status.dmaing |= 0x01;
 493         outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
 494         outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
 495         outb(0, nic_base + EN0_RCNTHI);
 496         outb(0, nic_base + EN0_RSARLO);         /* On page boundary */
 497         outb(ring_page, nic_base + EN0_RSARHI);
 498         outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
 499
 500         if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
 501                 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
 502         } else {
 503                 *(u32*)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT));
 504                 le16_to_cpus(&hdr->count);
 505         }
 506
 507         outb(ENISR_RDC, nic_base + EN0_ISR);    /* Ack intr. */
 508         ei_status.dmaing &= ~0x01;
 509 }
 510
 511 /* Block input and output, similar to the Crynwr packet driver.  If you
 512    are porting to a new ethercard, look at the packet driver source for hints.
 513    The NEx000 doesn't share the on-board packet memory -- you have to put
 514    the packet out through the "remote DMA" dataport using outb. */
 515
 516 static void ne2k_pci_block_input(struct net_device *dev, int count,
 517                                  struct sk_buff *skb, int ring_offset)
 518 {
 519         long nic_base = dev->base_addr;
 520         char *buf = skb->data;
 521
 522         /* This *shouldn't* happen. If it does, it's the last thing you'll see */
 523         if (ei_status.dmaing) {
 524                 netdev_err(dev, "DMAing conflict in ne2k_pci_block_input "
 525                            "[DMAstat:%d][irqlock:%d].\n",
 526                            ei_status.dmaing, ei_status.irqlock);
 527                 return;
 528         }
 529         ei_status.dmaing |= 0x01;
 530         if (ei_status.ne2k_flags & ONLY_32BIT_IO)
 531                 count = (count + 3) & 0xFFFC;
 532         outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
 533         outb(count & 0xff, nic_base + EN0_RCNTLO);
 534         outb(count >> 8, nic_base + EN0_RCNTHI);
 535         outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
 536         outb(ring_offset >> 8, nic_base + EN0_RSARHI);
 537         outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
 538
 539         if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
 540                 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
 541                 if (count & 0x01) {
 542                         buf[count-1] = inb(NE_BASE + NE_DATAPORT);
 543                 }
 544         } else {
 545                 insl(NE_BASE + NE_DATAPORT, buf, count>>2);
 546                 if (count & 3) {
 547                         buf += count & ~3;
 548                         if (count & 2) {
 549                                 __le16 *b = (__le16 *)buf;
 550
 551                                 *b++ = cpu_to_le16(inw(NE_BASE + NE_DATAPORT));
 552                                 buf = (char *)b;
 553                         }
 554                         if (count & 1)
 555                                 *buf = inb(NE_BASE + NE_DATAPORT);
 556                 }
 557         }
 558
 559         outb(ENISR_RDC, nic_base + EN0_ISR);    /* Ack intr. */
 560         ei_status.dmaing &= ~0x01;
 561 }
 562
 563 static void ne2k_pci_block_output(struct net_device *dev, int count,
 564                                   const unsigned char *buf, const int start_page)
 565 {
 566         long nic_base = NE_BASE;
 567         unsigned long dma_start;
 568
 569         /* On little-endian it's always safe to round the count up for
 570            word writes. */
 571         if (ei_status.ne2k_flags & ONLY_32BIT_IO)
 572                 count = (count + 3) & 0xFFFC;
 573         else
 574                 if (count & 0x01)
 575                         count++;
 576
 577         /* This *shouldn't* happen. If it does, it's the last thing you'll see */
 578         if (ei_status.dmaing) {
 579                 netdev_err(dev, "DMAing conflict in ne2k_pci_block_output."
 580                            "[DMAstat:%d][irqlock:%d]\n",
 581                            ei_status.dmaing, ei_status.irqlock);
 582                 return;
 583         }
 584         ei_status.dmaing |= 0x01;
 585         /* We should already be in page 0, but to be safe... */
 586         outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
 587
 588 #ifdef NE8390_RW_BUGFIX
 589         /* Handle the read-before-write bug the same way as the
 590            Crynwr packet driver -- the NatSemi method doesn't work.
 591            Actually this doesn't always work either, but if you have
 592            problems with your NEx000 this is better than nothing! */
 593         outb(0x42, nic_base + EN0_RCNTLO);
 594         outb(0x00, nic_base + EN0_RCNTHI);
 595         outb(0x42, nic_base + EN0_RSARLO);
 596         outb(0x00, nic_base + EN0_RSARHI);
 597         outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
 598 #endif
 599         outb(ENISR_RDC, nic_base + EN0_ISR);
 600
 601    /* Now the normal output. */
 602         outb(count & 0xff, nic_base + EN0_RCNTLO);
 603         outb(count >> 8,   nic_base + EN0_RCNTHI);
 604         outb(0x00, nic_base + EN0_RSARLO);
 605         outb(start_page, nic_base + EN0_RSARHI);
 606         outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
 607         if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
 608                 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
 609         } else {
 610                 outsl(NE_BASE + NE_DATAPORT, buf, count>>2);
 611                 if (count & 3) {
 612                         buf += count & ~3;
 613                         if (count & 2) {
 614                                 __le16 *b = (__le16 *)buf;
 615
 616                                 outw(le16_to_cpu(*b++), NE_BASE + NE_DATAPORT);
 617                                 buf = (char *)b;
 618                         }
 619                 }
 620         }
 621
 622         dma_start = jiffies;
 623
 624         while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0)
 625                 if (jiffies - dma_start > 2) {                  /* Avoid clock roll-over. */
 626                         netdev_warn(dev, "timeout waiting for Tx RDC.\n");
 627                         ne2k_pci_reset_8390(dev);
 628                         NS8390_init(dev,1);
 629                         break;
 630                 }
 631
 632         outb(ENISR_RDC, nic_base + EN0_ISR);    /* Ack intr. */
 633         ei_status.dmaing &= ~0x01;
 634 }
 635
 636 static void ne2k_pci_get_drvinfo(struct net_device *dev,
 637                                  struct ethtool_drvinfo *info)
 638 {
 639         struct ei_device *ei = netdev_priv(dev);
 640         struct pci_dev *pci_dev = (struct pci_dev *) ei->priv;
 641
 642         strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
 643         strlcpy(info->version, DRV_VERSION, sizeof(info->version));
 644         strlcpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info));
 645 }
 646
 647 static u32 ne2k_pci_get_msglevel(struct net_device *dev)
 648 {
 649         struct ei_device *ei_local = netdev_priv(dev);
 650
 651         return ei_local->msg_enable;
 652 }
 653
 654 static void ne2k_pci_set_msglevel(struct net_device *dev, u32 v)
 655 {
 656         struct ei_device *ei_local = netdev_priv(dev);
 657
 658         ei_local->msg_enable = v;
 659 }
 660
 661 static const struct ethtool_ops ne2k_pci_ethtool_ops = {
 662         .get_drvinfo            = ne2k_pci_get_drvinfo,
 663         .get_msglevel           = ne2k_pci_get_msglevel,
 664         .set_msglevel           = ne2k_pci_set_msglevel,
 665 };
 666
 667 static void ne2k_pci_remove_one(struct pci_dev *pdev)
 668 {
 669         struct net_device *dev = pci_get_drvdata(pdev);
 670
 671         BUG_ON(!dev);
 672         unregister_netdev(dev);
 673         release_region(dev->base_addr, NE_IO_EXTENT);
 674         free_netdev(dev);
 675         pci_disable_device(pdev);
 676 }
 677
 678 #ifdef CONFIG_PM
 679 static int ne2k_pci_suspend (struct pci_dev *pdev, pm_message_t state)
 680 {
 681         struct net_device *dev = pci_get_drvdata (pdev);
 682
 683         netif_device_detach(dev);
 684         pci_save_state(pdev);
 685         pci_disable_device(pdev);
 686         pci_set_power_state(pdev, pci_choose_state(pdev, state));
 687
 688         return 0;
 689 }
 690
 691 static int ne2k_pci_resume (struct pci_dev *pdev)
 692 {
 693         struct net_device *dev = pci_get_drvdata (pdev);
 694         int rc;
 695
 696         pci_set_power_state(pdev, PCI_D0);
 697         pci_restore_state(pdev);
 698
 699         rc = pci_enable_device(pdev);
 700         if (rc)
 701                 return rc;
 702
 703         NS8390_init(dev, 1);
 704         netif_device_attach(dev);
 705
 706         return 0;
 707 }
 708
 709 #endif /* CONFIG_PM */
 710
 711
 712 static struct pci_driver ne2k_driver = {
 713         .name           = DRV_NAME,
 714         .probe          = ne2k_pci_init_one,
 715         .remove         = ne2k_pci_remove_one,
 716         .id_table       = ne2k_pci_tbl,
 717 #ifdef CONFIG_PM
 718         .suspend        = ne2k_pci_suspend,
 719         .resume         = ne2k_pci_resume,
 720 #endif /* CONFIG_PM */
 721
 722 };
 723
 724
 725 static int __init ne2k_pci_init(void)
 726 {
 727 /* when a module, this is printed whether or not devices are found in probe */
 728 #ifdef MODULE
 729         printk(version);
 730 #endif
 731         return pci_register_driver(&ne2k_driver);
 732 }
 733
 734
 735 static void __exit ne2k_pci_cleanup(void)
 736 {
 737         pci_unregister_driver (&ne2k_driver);
 738 }
 739
 740 module_init(ne2k_pci_init);
 741 module_exit(ne2k_pci_cleanup);