linux/drivers/net/ethernet/8390/ne2k-pci.c
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   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. */
  38static int full_duplex[MAX_UNITS];
  39static 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 <linux/uaccess.h>
  58
  59#include "8390.h"
  60
  61static u32 ne2k_msg_enable;
  62
  63/* These identify the driver base version and may not be removed. */
  64static 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
  75MODULE_AUTHOR("Donald Becker / Paul Gortmaker");
  76MODULE_DESCRIPTION("PCI NE2000 clone driver");
  77MODULE_LICENSE("GPL");
  78
  79module_param_named(msg_enable, ne2k_msg_enable, uint, (S_IRUSR|S_IRGRP|S_IROTH));
  80module_param_array(options, int, NULL, 0);
  81module_param_array(full_duplex, int, NULL, 0);
  82MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
  83MODULE_PARM_DESC(options, "Bit 5: full duplex");
  84MODULE_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
  97enum {
  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
 104enum 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
 119static 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
 138static 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};
 152MODULE_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
 167static int ne2k_pci_open(struct net_device *dev);
 168static int ne2k_pci_close(struct net_device *dev);
 169
 170static void ne2k_pci_reset_8390(struct net_device *dev);
 171static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
 172                          int ring_page);
 173static void ne2k_pci_block_input(struct net_device *dev, int count,
 174                          struct sk_buff *skb, int ring_offset);
 175static void ne2k_pci_block_output(struct net_device *dev, const int count,
 176                const unsigned char *buf, const int start_page);
 177static 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.. */
 183struct 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
 203static 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#ifdef CONFIG_NET_POLL_CONTROLLER
 213        .ndo_poll_controller = ei_poll,
 214#endif
 215};
 216
 217static int ne2k_pci_init_one(struct pci_dev *pdev,
 218                             const struct pci_device_id *ent)
 219{
 220        struct net_device *dev;
 221        int i;
 222        unsigned char SA_prom[32];
 223        int start_page, stop_page;
 224        int irq, reg0, chip_idx = ent->driver_data;
 225        static unsigned int fnd_cnt;
 226        long ioaddr;
 227        int flags = pci_clone_list[chip_idx].flags;
 228        struct ei_device *ei_local;
 229
 230/* when built into the kernel, we only print version if device is found */
 231#ifndef MODULE
 232        static int printed_version;
 233        if (!printed_version++)
 234                printk(version);
 235#endif
 236
 237        fnd_cnt++;
 238
 239        i = pci_enable_device (pdev);
 240        if (i)
 241                return i;
 242
 243        ioaddr = pci_resource_start (pdev, 0);
 244        irq = pdev->irq;
 245
 246        if (!ioaddr || ((pci_resource_flags (pdev, 0) & IORESOURCE_IO) == 0)) {
 247                dev_err(&pdev->dev, "no I/O resource at PCI BAR #0\n");
 248                goto err_out;
 249        }
 250
 251        if (request_region (ioaddr, NE_IO_EXTENT, DRV_NAME) == NULL) {
 252                dev_err(&pdev->dev, "I/O resource 0x%x @ 0x%lx busy\n",
 253                        NE_IO_EXTENT, ioaddr);
 254                goto err_out;
 255        }
 256
 257        reg0 = inb(ioaddr);
 258        if (reg0 == 0xFF)
 259                goto err_out_free_res;
 260
 261        /* Do a preliminary verification that we have a 8390. */
 262        {
 263                int regd;
 264                outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
 265                regd = inb(ioaddr + 0x0d);
 266                outb(0xff, ioaddr + 0x0d);
 267                outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
 268                inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
 269                if (inb(ioaddr + EN0_COUNTER0) != 0) {
 270                        outb(reg0, ioaddr);
 271                        outb(regd, ioaddr + 0x0d);      /* Restore the old values. */
 272                        goto err_out_free_res;
 273                }
 274        }
 275
 276        /* Allocate net_device, dev->priv; fill in 8390 specific dev fields. */
 277        dev = alloc_ei_netdev();
 278        if (!dev) {
 279                dev_err(&pdev->dev, "cannot allocate ethernet device\n");
 280                goto err_out_free_res;
 281        }
 282        dev->netdev_ops = &ne2k_netdev_ops;
 283        ei_local = netdev_priv(dev);
 284        ei_local->msg_enable = ne2k_msg_enable;
 285
 286        SET_NETDEV_DEV(dev, &pdev->dev);
 287
 288        /* Reset card. Who knows what dain-bramaged state it was left in. */
 289        {
 290                unsigned long reset_start_time = jiffies;
 291
 292                outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
 293
 294                /* This looks like a horrible timing loop, but it should never take
 295                   more than a few cycles.
 296                */
 297                while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
 298                        /* Limit wait: '2' avoids jiffy roll-over. */
 299                        if (jiffies - reset_start_time > 2) {
 300                                dev_err(&pdev->dev,
 301                                        "Card failure (no reset ack).\n");
 302                                goto err_out_free_netdev;
 303                        }
 304
 305                outb(0xff, ioaddr + EN0_ISR);           /* Ack all intr. */
 306        }
 307
 308        /* Read the 16 bytes of station address PROM.
 309           We must first initialize registers, similar to NS8390_init(eifdev, 0).
 310           We can't reliably read the SAPROM address without this.
 311           (I learned the hard way!). */
 312        {
 313                struct {unsigned char value, offset; } program_seq[] = {
 314                        {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
 315                        {0x49,  EN0_DCFG},      /* Set word-wide access. */
 316                        {0x00,  EN0_RCNTLO},    /* Clear the count regs. */
 317                        {0x00,  EN0_RCNTHI},
 318                        {0x00,  EN0_IMR},       /* Mask completion irq. */
 319                        {0xFF,  EN0_ISR},
 320                        {E8390_RXOFF, EN0_RXCR},        /* 0x20  Set to monitor */
 321                        {E8390_TXOFF, EN0_TXCR},        /* 0x02  and loopback mode. */
 322                        {32,    EN0_RCNTLO},
 323                        {0x00,  EN0_RCNTHI},
 324                        {0x00,  EN0_RSARLO},    /* DMA starting at 0x0000. */
 325                        {0x00,  EN0_RSARHI},
 326                        {E8390_RREAD+E8390_START, E8390_CMD},
 327                };
 328                for (i = 0; i < ARRAY_SIZE(program_seq); i++)
 329                        outb(program_seq[i].value, ioaddr + program_seq[i].offset);
 330
 331        }
 332
 333        /* Note: all PCI cards have at least 16 bit access, so we don't have
 334           to check for 8 bit cards.  Most cards permit 32 bit access. */
 335        if (flags & ONLY_32BIT_IO) {
 336                for (i = 0; i < 4 ; i++)
 337                        ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT));
 338        } else
 339                for(i = 0; i < 32 /*sizeof(SA_prom)*/; i++)
 340                        SA_prom[i] = inb(ioaddr + NE_DATAPORT);
 341
 342        /* We always set the 8390 registers for word mode. */
 343        outb(0x49, ioaddr + EN0_DCFG);
 344        start_page = NESM_START_PG;
 345
 346        stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG;
 347
 348        /* Set up the rest of the parameters. */
 349        dev->irq = irq;
 350        dev->base_addr = ioaddr;
 351        pci_set_drvdata(pdev, dev);
 352
 353        ei_status.name = pci_clone_list[chip_idx].name;
 354        ei_status.tx_start_page = start_page;
 355        ei_status.stop_page = stop_page;
 356        ei_status.word16 = 1;
 357        ei_status.ne2k_flags = flags;
 358        if (fnd_cnt < MAX_UNITS) {
 359                if (full_duplex[fnd_cnt] > 0  ||  (options[fnd_cnt] & FORCE_FDX))
 360                        ei_status.ne2k_flags |= FORCE_FDX;
 361        }
 362
 363        ei_status.rx_start_page = start_page + TX_PAGES;
 364#ifdef PACKETBUF_MEMSIZE
 365        /* Allow the packet buffer size to be overridden by know-it-alls. */
 366        ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
 367#endif
 368
 369        ei_status.reset_8390 = &ne2k_pci_reset_8390;
 370        ei_status.block_input = &ne2k_pci_block_input;
 371        ei_status.block_output = &ne2k_pci_block_output;
 372        ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr;
 373        ei_status.priv = (unsigned long) pdev;
 374
 375        dev->ethtool_ops = &ne2k_pci_ethtool_ops;
 376        NS8390_init(dev, 0);
 377
 378        memcpy(dev->dev_addr, SA_prom, dev->addr_len);
 379
 380        i = register_netdev(dev);
 381        if (i)
 382                goto err_out_free_netdev;
 383
 384        netdev_info(dev, "%s found at %#lx, IRQ %d, %pM.\n",
 385                    pci_clone_list[chip_idx].name, ioaddr, dev->irq,
 386                    dev->dev_addr);
 387
 388        return 0;
 389
 390err_out_free_netdev:
 391        free_netdev (dev);
 392err_out_free_res:
 393        release_region (ioaddr, NE_IO_EXTENT);
 394err_out:
 395        pci_disable_device(pdev);
 396        return -ENODEV;
 397}
 398
 399/*
 400 * Magic incantation sequence for full duplex on the supported cards.
 401 */
 402static inline int set_realtek_fdx(struct net_device *dev)
 403{
 404        long ioaddr = dev->base_addr;
 405
 406        outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */
 407        outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */
 408        outb(0x40, ioaddr + 0x06); /* Enable full duplex */
 409        outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */
 410        outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */
 411        return 0;
 412}
 413
 414static inline int set_holtek_fdx(struct net_device *dev)
 415{
 416        long ioaddr = dev->base_addr;
 417
 418        outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20);
 419        return 0;
 420}
 421
 422static int ne2k_pci_set_fdx(struct net_device *dev)
 423{
 424        if (ei_status.ne2k_flags & REALTEK_FDX)
 425                return set_realtek_fdx(dev);
 426        else if (ei_status.ne2k_flags & HOLTEK_FDX)
 427                return set_holtek_fdx(dev);
 428
 429        return -EOPNOTSUPP;
 430}
 431
 432static int ne2k_pci_open(struct net_device *dev)
 433{
 434        int ret = request_irq(dev->irq, ei_interrupt, IRQF_SHARED, dev->name, dev);
 435        if (ret)
 436                return ret;
 437
 438        if (ei_status.ne2k_flags & FORCE_FDX)
 439                ne2k_pci_set_fdx(dev);
 440
 441        ei_open(dev);
 442        return 0;
 443}
 444
 445static int ne2k_pci_close(struct net_device *dev)
 446{
 447        ei_close(dev);
 448        free_irq(dev->irq, dev);
 449        return 0;
 450}
 451
 452/* Hard reset the card.  This used to pause for the same period that a
 453   8390 reset command required, but that shouldn't be necessary. */
 454static void ne2k_pci_reset_8390(struct net_device *dev)
 455{
 456        unsigned long reset_start_time = jiffies;
 457        struct ei_device *ei_local = netdev_priv(dev);
 458
 459        netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n",
 460                  jiffies);
 461
 462        outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
 463
 464        ei_status.txing = 0;
 465        ei_status.dmaing = 0;
 466
 467        /* This check _should_not_ be necessary, omit eventually. */
 468        while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
 469                if (jiffies - reset_start_time > 2) {
 470                        netdev_err(dev, "ne2k_pci_reset_8390() did not complete.\n");
 471                        break;
 472                }
 473        outb(ENISR_RESET, NE_BASE + EN0_ISR);   /* Ack intr. */
 474}
 475
 476/* Grab the 8390 specific header. Similar to the block_input routine, but
 477   we don't need to be concerned with ring wrap as the header will be at
 478   the start of a page, so we optimize accordingly. */
 479
 480static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
 481{
 482
 483        long nic_base = dev->base_addr;
 484
 485        /* This *shouldn't* happen. If it does, it's the last thing you'll see */
 486        if (ei_status.dmaing) {
 487                netdev_err(dev, "DMAing conflict in ne2k_pci_get_8390_hdr "
 488                           "[DMAstat:%d][irqlock:%d].\n",
 489                           ei_status.dmaing, ei_status.irqlock);
 490                return;
 491        }
 492
 493        ei_status.dmaing |= 0x01;
 494        outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
 495        outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
 496        outb(0, nic_base + EN0_RCNTHI);
 497        outb(0, nic_base + EN0_RSARLO);         /* On page boundary */
 498        outb(ring_page, nic_base + EN0_RSARHI);
 499        outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
 500
 501        if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
 502                insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
 503        } else {
 504                *(u32*)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT));
 505                le16_to_cpus(&hdr->count);
 506        }
 507
 508        outb(ENISR_RDC, nic_base + EN0_ISR);    /* Ack intr. */
 509        ei_status.dmaing &= ~0x01;
 510}
 511
 512/* Block input and output, similar to the Crynwr packet driver.  If you
 513   are porting to a new ethercard, look at the packet driver source for hints.
 514   The NEx000 doesn't share the on-board packet memory -- you have to put
 515   the packet out through the "remote DMA" dataport using outb. */
 516
 517static void ne2k_pci_block_input(struct net_device *dev, int count,
 518                                 struct sk_buff *skb, int ring_offset)
 519{
 520        long nic_base = dev->base_addr;
 521        char *buf = skb->data;
 522
 523        /* This *shouldn't* happen. If it does, it's the last thing you'll see */
 524        if (ei_status.dmaing) {
 525                netdev_err(dev, "DMAing conflict in ne2k_pci_block_input "
 526                           "[DMAstat:%d][irqlock:%d].\n",
 527                           ei_status.dmaing, ei_status.irqlock);
 528                return;
 529        }
 530        ei_status.dmaing |= 0x01;
 531        if (ei_status.ne2k_flags & ONLY_32BIT_IO)
 532                count = (count + 3) & 0xFFFC;
 533        outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
 534        outb(count & 0xff, nic_base + EN0_RCNTLO);
 535        outb(count >> 8, nic_base + EN0_RCNTHI);
 536        outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
 537        outb(ring_offset >> 8, nic_base + EN0_RSARHI);
 538        outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
 539
 540        if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
 541                insw(NE_BASE + NE_DATAPORT,buf,count>>1);
 542                if (count & 0x01) {
 543                        buf[count-1] = inb(NE_BASE + NE_DATAPORT);
 544                }
 545        } else {
 546                insl(NE_BASE + NE_DATAPORT, buf, count>>2);
 547                if (count & 3) {
 548                        buf += count & ~3;
 549                        if (count & 2) {
 550                                __le16 *b = (__le16 *)buf;
 551
 552                                *b++ = cpu_to_le16(inw(NE_BASE + NE_DATAPORT));
 553                                buf = (char *)b;
 554                        }
 555                        if (count & 1)
 556                                *buf = inb(NE_BASE + NE_DATAPORT);
 557                }
 558        }
 559
 560        outb(ENISR_RDC, nic_base + EN0_ISR);    /* Ack intr. */
 561        ei_status.dmaing &= ~0x01;
 562}
 563
 564static void ne2k_pci_block_output(struct net_device *dev, int count,
 565                                  const unsigned char *buf, const int start_page)
 566{
 567        long nic_base = NE_BASE;
 568        unsigned long dma_start;
 569
 570        /* On little-endian it's always safe to round the count up for
 571           word writes. */
 572        if (ei_status.ne2k_flags & ONLY_32BIT_IO)
 573                count = (count + 3) & 0xFFFC;
 574        else
 575                if (count & 0x01)
 576                        count++;
 577
 578        /* This *shouldn't* happen. If it does, it's the last thing you'll see */
 579        if (ei_status.dmaing) {
 580                netdev_err(dev, "DMAing conflict in ne2k_pci_block_output."
 581                           "[DMAstat:%d][irqlock:%d]\n",
 582                           ei_status.dmaing, ei_status.irqlock);
 583                return;
 584        }
 585        ei_status.dmaing |= 0x01;
 586        /* We should already be in page 0, but to be safe... */
 587        outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
 588
 589#ifdef NE8390_RW_BUGFIX
 590        /* Handle the read-before-write bug the same way as the
 591           Crynwr packet driver -- the NatSemi method doesn't work.
 592           Actually this doesn't always work either, but if you have
 593           problems with your NEx000 this is better than nothing! */
 594        outb(0x42, nic_base + EN0_RCNTLO);
 595        outb(0x00, nic_base + EN0_RCNTHI);
 596        outb(0x42, nic_base + EN0_RSARLO);
 597        outb(0x00, nic_base + EN0_RSARHI);
 598        outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
 599#endif
 600        outb(ENISR_RDC, nic_base + EN0_ISR);
 601
 602   /* Now the normal output. */
 603        outb(count & 0xff, nic_base + EN0_RCNTLO);
 604        outb(count >> 8,   nic_base + EN0_RCNTHI);
 605        outb(0x00, nic_base + EN0_RSARLO);
 606        outb(start_page, nic_base + EN0_RSARHI);
 607        outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
 608        if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
 609                outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
 610        } else {
 611                outsl(NE_BASE + NE_DATAPORT, buf, count>>2);
 612                if (count & 3) {
 613                        buf += count & ~3;
 614                        if (count & 2) {
 615                                __le16 *b = (__le16 *)buf;
 616
 617                                outw(le16_to_cpu(*b++), NE_BASE + NE_DATAPORT);
 618                                buf = (char *)b;
 619                        }
 620                }
 621        }
 622
 623        dma_start = jiffies;
 624
 625        while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0)
 626                if (jiffies - dma_start > 2) {                  /* Avoid clock roll-over. */
 627                        netdev_warn(dev, "timeout waiting for Tx RDC.\n");
 628                        ne2k_pci_reset_8390(dev);
 629                        NS8390_init(dev,1);
 630                        break;
 631                }
 632
 633        outb(ENISR_RDC, nic_base + EN0_ISR);    /* Ack intr. */
 634        ei_status.dmaing &= ~0x01;
 635}
 636
 637static void ne2k_pci_get_drvinfo(struct net_device *dev,
 638                                 struct ethtool_drvinfo *info)
 639{
 640        struct ei_device *ei = netdev_priv(dev);
 641        struct pci_dev *pci_dev = (struct pci_dev *) ei->priv;
 642
 643        strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
 644        strlcpy(info->version, DRV_VERSION, sizeof(info->version));
 645        strlcpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info));
 646}
 647
 648static u32 ne2k_pci_get_msglevel(struct net_device *dev)
 649{
 650        struct ei_device *ei_local = netdev_priv(dev);
 651
 652        return ei_local->msg_enable;
 653}
 654
 655static void ne2k_pci_set_msglevel(struct net_device *dev, u32 v)
 656{
 657        struct ei_device *ei_local = netdev_priv(dev);
 658
 659        ei_local->msg_enable = v;
 660}
 661
 662static const struct ethtool_ops ne2k_pci_ethtool_ops = {
 663        .get_drvinfo            = ne2k_pci_get_drvinfo,
 664        .get_msglevel           = ne2k_pci_get_msglevel,
 665        .set_msglevel           = ne2k_pci_set_msglevel,
 666};
 667
 668static void ne2k_pci_remove_one(struct pci_dev *pdev)
 669{
 670        struct net_device *dev = pci_get_drvdata(pdev);
 671
 672        BUG_ON(!dev);
 673        unregister_netdev(dev);
 674        release_region(dev->base_addr, NE_IO_EXTENT);
 675        free_netdev(dev);
 676        pci_disable_device(pdev);
 677}
 678
 679#ifdef CONFIG_PM
 680static int ne2k_pci_suspend (struct pci_dev *pdev, pm_message_t state)
 681{
 682        struct net_device *dev = pci_get_drvdata (pdev);
 683
 684        netif_device_detach(dev);
 685        pci_save_state(pdev);
 686        pci_disable_device(pdev);
 687        pci_set_power_state(pdev, pci_choose_state(pdev, state));
 688
 689        return 0;
 690}
 691
 692static int ne2k_pci_resume (struct pci_dev *pdev)
 693{
 694        struct net_device *dev = pci_get_drvdata (pdev);
 695        int rc;
 696
 697        pci_set_power_state(pdev, PCI_D0);
 698        pci_restore_state(pdev);
 699
 700        rc = pci_enable_device(pdev);
 701        if (rc)
 702                return rc;
 703
 704        NS8390_init(dev, 1);
 705        netif_device_attach(dev);
 706
 707        return 0;
 708}
 709
 710#endif /* CONFIG_PM */
 711
 712
 713static struct pci_driver ne2k_driver = {
 714        .name           = DRV_NAME,
 715        .probe          = ne2k_pci_init_one,
 716        .remove         = ne2k_pci_remove_one,
 717        .id_table       = ne2k_pci_tbl,
 718#ifdef CONFIG_PM
 719        .suspend        = ne2k_pci_suspend,
 720        .resume         = ne2k_pci_resume,
 721#endif /* CONFIG_PM */
 722
 723};
 724
 725
 726static int __init ne2k_pci_init(void)
 727{
 728/* when a module, this is printed whether or not devices are found in probe */
 729#ifdef MODULE
 730        printk(version);
 731#endif
 732        return pci_register_driver(&ne2k_driver);
 733}
 734
 735
 736static void __exit ne2k_pci_cleanup(void)
 737{
 738        pci_unregister_driver (&ne2k_driver);
 739}
 740
 741module_init(ne2k_pci_init);
 742module_exit(ne2k_pci_cleanup);
 743
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