Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* fmv18x.c: A network device driver for the Fujitsu FMV-181/182/183/184. |
| 2 | |
| 3 | Original: at1700.c (1993-94 by Donald Becker). |
| 4 | Copyright 1993 United States Government as represented by the |
| 5 | Director, National Security Agency. |
| 6 | The author may be reached as becker@scyld.com, or C/O |
| 7 | Scyld Computing Corporation |
| 8 | 410 Severn Ave., Suite 210 |
| 9 | Annapolis MD 21403 |
| 10 | |
| 11 | Modified by Yutaka TAMIYA (tamy@flab.fujitsu.co.jp) |
| 12 | Copyright 1994 Fujitsu Laboratories Ltd. |
| 13 | Special thanks to: |
| 14 | Masayoshi UTAKA (utaka@ace.yk.fujitsu.co.jp) |
| 15 | for testing this driver. |
| 16 | H. NEGISHI (agy, negishi@sun45.psd.cs.fujitsu.co.jp) |
| 17 | for suggestion of some program modification. |
| 18 | Masahiro SEKIGUCHI <seki@sysrap.cs.fujitsu.co.jp> |
| 19 | for suggestion of some program modification. |
| 20 | Kazutoshi MORIOKA (morioka@aurora.oaks.cs.fujitsu.co.jp) |
| 21 | for testing this driver. |
| 22 | |
| 23 | This software may be used and distributed according to the terms |
| 24 | of the GNU General Public License, incorporated herein by reference. |
| 25 | |
| 26 | This is a device driver for the Fujitsu FMV-181/182/183/184, which |
| 27 | is a straight-forward Fujitsu MB86965 implementation. |
| 28 | |
| 29 | Sources: |
| 30 | at1700.c |
| 31 | The Fujitsu MB86965 datasheet. |
| 32 | The Fujitsu FMV-181/182 user's guide |
| 33 | */ |
| 34 | |
| 35 | static const char version[] = |
| 36 | "fmv18x.c:v2.2.0 09/24/98 Yutaka TAMIYA (tamy@flab.fujitsu.co.jp)\n"; |
| 37 | |
| 38 | #include <linux/module.h> |
| 39 | #include <linux/kernel.h> |
| 40 | #include <linux/types.h> |
| 41 | #include <linux/fcntl.h> |
| 42 | #include <linux/interrupt.h> |
| 43 | #include <linux/ioport.h> |
| 44 | #include <linux/in.h> |
| 45 | #include <linux/slab.h> |
| 46 | #include <linux/string.h> |
| 47 | #include <linux/init.h> |
| 48 | #include <linux/errno.h> |
| 49 | #include <linux/spinlock.h> |
| 50 | #include <linux/netdevice.h> |
| 51 | #include <linux/etherdevice.h> |
| 52 | #include <linux/skbuff.h> |
| 53 | #include <linux/delay.h> |
| 54 | #include <linux/bitops.h> |
| 55 | |
| 56 | #include <asm/system.h> |
| 57 | #include <asm/io.h> |
| 58 | #include <asm/dma.h> |
| 59 | |
| 60 | #define DRV_NAME "fmv18x" |
| 61 | |
| 62 | static unsigned fmv18x_probe_list[] __initdata = { |
| 63 | 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x300, 0x340, 0 |
| 64 | }; |
| 65 | |
| 66 | /* use 0 for production, 1 for verification, >2 for debug */ |
| 67 | #ifndef NET_DEBUG |
| 68 | #define NET_DEBUG 1 |
| 69 | #endif |
| 70 | static unsigned int net_debug = NET_DEBUG; |
| 71 | |
| 72 | typedef unsigned char uchar; |
| 73 | |
| 74 | /* Information that need to be kept for each board. */ |
| 75 | struct net_local { |
| 76 | struct net_device_stats stats; |
| 77 | long open_time; /* Useless example local info. */ |
| 78 | uint tx_started:1; /* Number of packet on the Tx queue. */ |
| 79 | uint tx_queue_ready:1; /* Tx queue is ready to be sent. */ |
| 80 | uint rx_started:1; /* Packets are Rxing. */ |
| 81 | uchar tx_queue; /* Number of packet on the Tx queue. */ |
| 82 | ushort tx_queue_len; /* Current length of the Tx queue. */ |
| 83 | spinlock_t lock; |
| 84 | }; |
| 85 | |
| 86 | |
| 87 | /* Offsets from the base address. */ |
| 88 | #define STATUS 0 |
| 89 | #define TX_STATUS 0 |
| 90 | #define RX_STATUS 1 |
| 91 | #define TX_INTR 2 /* Bit-mapped interrupt enable registers. */ |
| 92 | #define RX_INTR 3 |
| 93 | #define TX_MODE 4 |
| 94 | #define RX_MODE 5 |
| 95 | #define CONFIG_0 6 /* Misc. configuration settings. */ |
| 96 | #define CONFIG_1 7 |
| 97 | /* Run-time register bank 2 definitions. */ |
| 98 | #define DATAPORT 8 /* Word-wide DMA or programmed-I/O dataport. */ |
| 99 | #define TX_START 10 |
| 100 | #define COL16CNTL 11 /* Controll Reg for 16 collisions */ |
| 101 | #define MODE13 13 |
| 102 | /* Fujitsu FMV-18x Card Configuration */ |
| 103 | #define FJ_STATUS0 0x10 |
| 104 | #define FJ_STATUS1 0x11 |
| 105 | #define FJ_CONFIG0 0x12 |
| 106 | #define FJ_CONFIG1 0x13 |
| 107 | #define FJ_MACADDR 0x14 /* 0x14 - 0x19 */ |
| 108 | #define FJ_BUFCNTL 0x1A |
| 109 | #define FJ_BUFDATA 0x1C |
| 110 | #define FMV18X_IO_EXTENT 32 |
| 111 | |
| 112 | /* Index to functions, as function prototypes. */ |
| 113 | |
| 114 | static int fmv18x_probe1(struct net_device *dev, short ioaddr); |
| 115 | static int net_open(struct net_device *dev); |
| 116 | static int net_send_packet(struct sk_buff *skb, struct net_device *dev); |
| 117 | static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs *regs); |
| 118 | static void net_rx(struct net_device *dev); |
| 119 | static void net_timeout(struct net_device *dev); |
| 120 | static int net_close(struct net_device *dev); |
| 121 | static struct net_device_stats *net_get_stats(struct net_device *dev); |
| 122 | static void set_multicast_list(struct net_device *dev); |
| 123 | |
| 124 | |
| 125 | /* Check for a network adaptor of this type, and return '0' iff one exists. |
| 126 | If dev->base_addr == 0, probe all likely locations. |
| 127 | If dev->base_addr == 1, always return failure. |
| 128 | If dev->base_addr == 2, allocate space for the device and return success |
| 129 | (detachable devices only). |
| 130 | */ |
| 131 | |
| 132 | static int io = 0x220; |
| 133 | static int irq; |
| 134 | |
| 135 | struct net_device * __init fmv18x_probe(int unit) |
| 136 | { |
| 137 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); |
| 138 | unsigned *port; |
| 139 | int err = 0; |
| 140 | |
| 141 | if (!dev) |
| 142 | return ERR_PTR(-ENODEV); |
| 143 | |
| 144 | if (unit >= 0) { |
| 145 | sprintf(dev->name, "eth%d", unit); |
| 146 | netdev_boot_setup_check(dev); |
| 147 | io = dev->base_addr; |
| 148 | irq = dev->irq; |
| 149 | } |
| 150 | |
| 151 | SET_MODULE_OWNER(dev); |
| 152 | |
| 153 | if (io > 0x1ff) { /* Check a single specified location. */ |
| 154 | err = fmv18x_probe1(dev, io); |
| 155 | } else if (io != 0) { /* Don't probe at all. */ |
| 156 | err = -ENXIO; |
| 157 | } else { |
| 158 | for (port = fmv18x_probe_list; *port; port++) |
| 159 | if (fmv18x_probe1(dev, *port) == 0) |
| 160 | break; |
| 161 | if (!*port) |
| 162 | err = -ENODEV; |
| 163 | } |
| 164 | if (err) |
| 165 | goto out; |
| 166 | err = register_netdev(dev); |
| 167 | if (err) |
| 168 | goto out1; |
| 169 | return dev; |
| 170 | out1: |
| 171 | free_irq(dev->irq, dev); |
| 172 | release_region(dev->base_addr, FMV18X_IO_EXTENT); |
| 173 | out: |
| 174 | free_netdev(dev); |
| 175 | return ERR_PTR(err); |
| 176 | } |
| 177 | |
| 178 | /* The Fujitsu datasheet suggests that the NIC be probed for by checking its |
| 179 | "signature", the default bit pattern after a reset. This *doesn't* work -- |
| 180 | there is no way to reset the bus interface without a complete power-cycle! |
| 181 | |
| 182 | It turns out that ATI came to the same conclusion I did: the only thing |
| 183 | that can be done is checking a few bits and then diving right into MAC |
| 184 | address check. */ |
| 185 | |
| 186 | static int __init fmv18x_probe1(struct net_device *dev, short ioaddr) |
| 187 | { |
| 188 | char irqmap[4] = {3, 7, 10, 15}; |
| 189 | char irqmap_pnp[8] = {3, 4, 5, 7, 9, 10, 11, 15}; |
| 190 | unsigned int i, retval; |
| 191 | struct net_local *lp; |
| 192 | |
| 193 | /* Resetting the chip doesn't reset the ISA interface, so don't bother. |
| 194 | That means we have to be careful with the register values we probe for. |
| 195 | */ |
| 196 | |
| 197 | if (!request_region(ioaddr, FMV18X_IO_EXTENT, DRV_NAME)) |
| 198 | return -EBUSY; |
| 199 | |
| 200 | dev->irq = irq; |
| 201 | dev->base_addr = ioaddr; |
| 202 | |
| 203 | /* Check I/O address configuration and Fujitsu vendor code */ |
| 204 | if (inb(ioaddr+FJ_MACADDR ) != 0x00 |
| 205 | || inb(ioaddr+FJ_MACADDR+1) != 0x00 |
| 206 | || inb(ioaddr+FJ_MACADDR+2) != 0x0e) { |
| 207 | retval = -ENODEV; |
| 208 | goto out; |
| 209 | } |
| 210 | |
| 211 | /* Check PnP mode for FMV-183/184/183A/184A. */ |
| 212 | /* This PnP routine is very poor. IO and IRQ should be known. */ |
| 213 | if (inb(ioaddr + FJ_STATUS1) & 0x20) { |
| 214 | for (i = 0; i < 8; i++) { |
| 215 | if (dev->irq == irqmap_pnp[i]) |
| 216 | break; |
| 217 | } |
| 218 | if (i == 8) { |
| 219 | retval = -ENODEV; |
| 220 | goto out; |
| 221 | } |
| 222 | } else { |
| 223 | if (fmv18x_probe_list[inb(ioaddr + FJ_CONFIG0) & 0x07] != ioaddr) |
| 224 | return -ENODEV; |
| 225 | dev->irq = irqmap[(inb(ioaddr + FJ_CONFIG0)>>6) & 0x03]; |
| 226 | } |
| 227 | |
| 228 | /* Snarf the interrupt vector now. */ |
| 229 | retval = request_irq(dev->irq, &net_interrupt, 0, DRV_NAME, dev); |
| 230 | if (retval) { |
| 231 | printk ("FMV-18x found at %#3x, but it's unusable due to a conflict on" |
| 232 | "IRQ %d.\n", ioaddr, dev->irq); |
| 233 | goto out; |
| 234 | } |
| 235 | |
| 236 | printk("%s: FMV-18x found at %#3x, IRQ %d, address ", dev->name, |
| 237 | ioaddr, dev->irq); |
| 238 | |
| 239 | for(i = 0; i < 6; i++) { |
| 240 | unsigned char val = inb(ioaddr + FJ_MACADDR + i); |
| 241 | printk("%02x", val); |
| 242 | dev->dev_addr[i] = val; |
| 243 | } |
| 244 | |
| 245 | /* "FJ_STATUS0" 12 bit 0x0400 means use regular 100 ohm 10baseT signals, |
| 246 | rather than 150 ohm shielded twisted pair compensation. |
| 247 | 0x0000 == auto-sense the interface |
| 248 | 0x0800 == use TP interface |
| 249 | 0x1800 == use coax interface |
| 250 | */ |
| 251 | { |
| 252 | const char *porttype[] = {"auto-sense", "10baseT", "auto-sense", "10base2/5"}; |
| 253 | ushort setup_value = inb(ioaddr + FJ_STATUS0); |
| 254 | |
| 255 | switch( setup_value & 0x07 ){ |
| 256 | case 0x01 /* 10base5 */: |
| 257 | case 0x02 /* 10base2 */: dev->if_port = 0x18; break; |
| 258 | case 0x04 /* 10baseT */: dev->if_port = 0x08; break; |
| 259 | default /* auto-sense*/: dev->if_port = 0x00; break; |
| 260 | } |
| 261 | printk(" %s interface.\n", porttype[(dev->if_port>>3) & 3]); |
| 262 | } |
| 263 | |
| 264 | /* Initialize LAN Controller and LAN Card */ |
| 265 | outb(0xda, ioaddr + CONFIG_0); /* Initialize LAN Controller */ |
| 266 | outb(0x00, ioaddr + CONFIG_1); /* Stand by mode */ |
| 267 | outb(0x00, ioaddr + FJ_CONFIG1); /* Disable IRQ of LAN Card */ |
| 268 | outb(0x00, ioaddr + FJ_BUFCNTL); /* Reset ? I'm not sure (TAMIYA) */ |
| 269 | |
| 270 | /* wait for a while */ |
| 271 | udelay(200); |
| 272 | |
| 273 | /* Set the station address in bank zero. */ |
| 274 | outb(0x00, ioaddr + CONFIG_1); |
| 275 | for (i = 0; i < 6; i++) |
| 276 | outb(dev->dev_addr[i], ioaddr + 8 + i); |
| 277 | |
| 278 | /* Switch to bank 1 and set the multicast table to accept none. */ |
| 279 | outb(0x04, ioaddr + CONFIG_1); |
| 280 | for (i = 0; i < 8; i++) |
| 281 | outb(0x00, ioaddr + 8 + i); |
| 282 | |
| 283 | /* Switch to bank 2 and lock our I/O address. */ |
| 284 | outb(0x08, ioaddr + CONFIG_1); |
| 285 | outb(dev->if_port, ioaddr + MODE13); |
| 286 | outb(0x00, ioaddr + COL16CNTL); |
| 287 | |
| 288 | if (net_debug) |
| 289 | printk(version); |
| 290 | |
| 291 | /* Initialize the device structure. */ |
| 292 | dev->priv = kmalloc(sizeof(struct net_local), GFP_KERNEL); |
| 293 | if (!dev->priv) { |
| 294 | retval = -ENOMEM; |
| 295 | goto out_irq; |
| 296 | } |
| 297 | memset(dev->priv, 0, sizeof(struct net_local)); |
| 298 | lp = dev->priv; |
| 299 | spin_lock_init(&lp->lock); |
| 300 | |
| 301 | dev->open = net_open; |
| 302 | dev->stop = net_close; |
| 303 | dev->hard_start_xmit = net_send_packet; |
| 304 | dev->tx_timeout = net_timeout; |
| 305 | dev->watchdog_timeo = HZ/10; |
| 306 | dev->get_stats = net_get_stats; |
| 307 | dev->set_multicast_list = set_multicast_list; |
| 308 | return 0; |
| 309 | |
| 310 | out_irq: |
| 311 | free_irq(dev->irq, dev); |
| 312 | out: |
| 313 | release_region(ioaddr, FMV18X_IO_EXTENT); |
| 314 | return retval; |
| 315 | } |
| 316 | |
| 317 | |
| 318 | static int net_open(struct net_device *dev) |
| 319 | { |
| 320 | struct net_local *lp = dev->priv; |
| 321 | int ioaddr = dev->base_addr; |
| 322 | |
| 323 | /* Set the configuration register 0 to 32K 100ns. byte-wide memory, |
| 324 | 16 bit bus access, and two 4K Tx, enable the Rx and Tx. */ |
| 325 | outb(0x5a, ioaddr + CONFIG_0); |
| 326 | |
| 327 | /* Powerup and switch to register bank 2 for the run-time registers. */ |
| 328 | outb(0xe8, ioaddr + CONFIG_1); |
| 329 | |
| 330 | lp->tx_started = 0; |
| 331 | lp->tx_queue_ready = 1; |
| 332 | lp->rx_started = 0; |
| 333 | lp->tx_queue = 0; |
| 334 | lp->tx_queue_len = 0; |
| 335 | |
| 336 | /* Clear Tx and Rx Status */ |
| 337 | outb(0xff, ioaddr + TX_STATUS); |
| 338 | outb(0xff, ioaddr + RX_STATUS); |
| 339 | lp->open_time = jiffies; |
| 340 | |
| 341 | netif_start_queue(dev); |
| 342 | |
| 343 | /* Enable the IRQ of the LAN Card */ |
| 344 | outb(0x80, ioaddr + FJ_CONFIG1); |
| 345 | |
| 346 | /* Enable both Tx and Rx interrupts */ |
| 347 | outw(0x8182, ioaddr+TX_INTR); |
| 348 | |
| 349 | return 0; |
| 350 | } |
| 351 | |
| 352 | static void net_timeout(struct net_device *dev) |
| 353 | { |
| 354 | struct net_local *lp = dev->priv; |
| 355 | int ioaddr = dev->base_addr; |
| 356 | unsigned long flags; |
| 357 | |
| 358 | |
| 359 | printk(KERN_WARNING "%s: transmit timed out with status %04x, %s?\n", dev->name, |
| 360 | htons(inw(ioaddr + TX_STATUS)), |
| 361 | inb(ioaddr + TX_STATUS) & 0x80 |
| 362 | ? "IRQ conflict" : "network cable problem"); |
| 363 | printk(KERN_WARNING "%s: timeout registers: %04x %04x %04x %04x %04x %04x %04x %04x.\n", |
| 364 | dev->name, htons(inw(ioaddr + 0)), |
| 365 | htons(inw(ioaddr + 2)), htons(inw(ioaddr + 4)), |
| 366 | htons(inw(ioaddr + 6)), htons(inw(ioaddr + 8)), |
| 367 | htons(inw(ioaddr +10)), htons(inw(ioaddr +12)), |
| 368 | htons(inw(ioaddr +14))); |
| 369 | printk(KERN_WARNING "eth card: %04x %04x\n", |
| 370 | htons(inw(ioaddr+FJ_STATUS0)), |
| 371 | htons(inw(ioaddr+FJ_CONFIG0))); |
| 372 | lp->stats.tx_errors++; |
| 373 | /* ToDo: We should try to restart the adaptor... */ |
| 374 | spin_lock_irqsave(&lp->lock, flags); |
| 375 | |
| 376 | /* Initialize LAN Controller and LAN Card */ |
| 377 | outb(0xda, ioaddr + CONFIG_0); /* Initialize LAN Controller */ |
| 378 | outb(0x00, ioaddr + CONFIG_1); /* Stand by mode */ |
| 379 | outb(0x00, ioaddr + FJ_CONFIG1); /* Disable IRQ of LAN Card */ |
| 380 | outb(0x00, ioaddr + FJ_BUFCNTL); /* Reset ? I'm not sure */ |
| 381 | net_open(dev); |
| 382 | spin_unlock_irqrestore(&lp->lock, flags); |
| 383 | |
| 384 | netif_wake_queue(dev); |
| 385 | } |
| 386 | |
| 387 | static int net_send_packet(struct sk_buff *skb, struct net_device *dev) |
| 388 | { |
| 389 | struct net_local *lp = dev->priv; |
| 390 | int ioaddr = dev->base_addr; |
| 391 | short length = skb->len; |
| 392 | unsigned char *buf; |
| 393 | unsigned long flags; |
| 394 | |
| 395 | /* Block a transmit from overlapping. */ |
| 396 | |
| 397 | if (length > ETH_FRAME_LEN) { |
| 398 | if (net_debug) |
| 399 | printk("%s: Attempting to send a large packet (%d bytes).\n", |
| 400 | dev->name, length); |
| 401 | return 1; |
| 402 | } |
| 403 | |
| 404 | if (length < ETH_ZLEN) { |
| 405 | skb = skb_padto(skb, ETH_ZLEN); |
| 406 | if (skb == NULL) |
| 407 | return 0; |
| 408 | length = ETH_ZLEN; |
| 409 | } |
| 410 | buf = skb->data; |
| 411 | |
| 412 | if (net_debug > 4) |
| 413 | printk("%s: Transmitting a packet of length %lu.\n", dev->name, |
| 414 | (unsigned long)skb->len); |
| 415 | /* We may not start transmitting unless we finish transferring |
| 416 | a packet into the Tx queue. During executing the following |
| 417 | codes we possibly catch a Tx interrupt. Thus we flag off |
| 418 | tx_queue_ready, so that we prevent the interrupt routine |
| 419 | (net_interrupt) to start transmitting. */ |
| 420 | spin_lock_irqsave(&lp->lock, flags); |
| 421 | lp->tx_queue_ready = 0; |
| 422 | { |
| 423 | outw(length, ioaddr + DATAPORT); |
| 424 | outsw(ioaddr + DATAPORT, buf, (length + 1) >> 1); |
| 425 | lp->tx_queue++; |
| 426 | lp->tx_queue_len += length + 2; |
| 427 | } |
| 428 | lp->tx_queue_ready = 1; |
| 429 | spin_unlock_irqrestore(&lp->lock, flags); |
| 430 | |
| 431 | if (lp->tx_started == 0) { |
| 432 | /* If the Tx is idle, always trigger a transmit. */ |
| 433 | outb(0x80 | lp->tx_queue, ioaddr + TX_START); |
| 434 | lp->tx_queue = 0; |
| 435 | lp->tx_queue_len = 0; |
| 436 | dev->trans_start = jiffies; |
| 437 | lp->tx_started = 1; |
| 438 | } else if (lp->tx_queue_len >= 4096 - 1502) /* No room for a packet */ |
| 439 | netif_stop_queue(dev); |
| 440 | |
| 441 | dev_kfree_skb(skb); |
| 442 | return 0; |
| 443 | } |
| 444 | |
| 445 | /* The typical workload of the driver: |
| 446 | Handle the network interface interrupts. */ |
| 447 | static irqreturn_t |
| 448 | net_interrupt(int irq, void *dev_id, struct pt_regs *regs) |
| 449 | { |
| 450 | struct net_device *dev = dev_id; |
| 451 | struct net_local *lp; |
| 452 | int ioaddr, status; |
| 453 | |
| 454 | ioaddr = dev->base_addr; |
| 455 | lp = dev->priv; |
| 456 | status = inw(ioaddr + TX_STATUS); |
| 457 | outw(status, ioaddr + TX_STATUS); |
| 458 | |
| 459 | if (net_debug > 4) |
| 460 | printk("%s: Interrupt with status %04x.\n", dev->name, status); |
| 461 | if (lp->rx_started == 0 && |
| 462 | (status & 0xff00 || (inb(ioaddr + RX_MODE) & 0x40) == 0)) { |
| 463 | /* Got a packet(s). |
| 464 | We cannot execute net_rx more than once at the same time for |
| 465 | the same device. During executing net_rx, we possibly catch a |
| 466 | Tx interrupt. Thus we flag on rx_started, so that we prevent |
| 467 | the interrupt routine (net_interrupt) to dive into net_rx |
| 468 | again. */ |
| 469 | lp->rx_started = 1; |
| 470 | outb(0x00, ioaddr + RX_INTR); /* Disable RX intr. */ |
| 471 | net_rx(dev); |
| 472 | outb(0x81, ioaddr + RX_INTR); /* Enable RX intr. */ |
| 473 | lp->rx_started = 0; |
| 474 | } |
| 475 | if (status & 0x00ff) { |
| 476 | if (status & 0x02) { |
| 477 | /* More than 16 collisions occurred */ |
| 478 | if (net_debug > 4) |
| 479 | printk("%s: 16 Collision occur during Txing.\n", dev->name); |
| 480 | /* Cancel sending a packet. */ |
| 481 | outb(0x03, ioaddr + COL16CNTL); |
| 482 | lp->stats.collisions++; |
| 483 | } |
| 484 | if (status & 0x82) { |
| 485 | spin_lock(&lp->lock); |
| 486 | lp->stats.tx_packets++; |
| 487 | if (lp->tx_queue && lp->tx_queue_ready) { |
| 488 | outb(0x80 | lp->tx_queue, ioaddr + TX_START); |
| 489 | lp->tx_queue = 0; |
| 490 | lp->tx_queue_len = 0; |
| 491 | dev->trans_start = jiffies; |
| 492 | netif_wake_queue(dev); /* Inform upper layers. */ |
| 493 | } else { |
| 494 | lp->tx_started = 0; |
| 495 | netif_wake_queue(dev); /* Inform upper layers. */ |
| 496 | } |
| 497 | spin_unlock(&lp->lock); |
| 498 | } |
| 499 | } |
| 500 | return IRQ_RETVAL(status); |
| 501 | } |
| 502 | |
| 503 | /* We have a good packet(s), get it/them out of the buffers. */ |
| 504 | static void net_rx(struct net_device *dev) |
| 505 | { |
| 506 | struct net_local *lp = dev->priv; |
| 507 | int ioaddr = dev->base_addr; |
| 508 | int boguscount = 5; |
| 509 | |
| 510 | while ((inb(ioaddr + RX_MODE) & 0x40) == 0) { |
| 511 | /* Clear PKT_RDY bit: by agy 19940922 */ |
| 512 | /* outb(0x80, ioaddr + RX_STATUS); */ |
| 513 | ushort status = inw(ioaddr + DATAPORT); |
| 514 | |
| 515 | if (net_debug > 4) |
| 516 | printk("%s: Rxing packet mode %02x status %04x.\n", |
| 517 | dev->name, inb(ioaddr + RX_MODE), status); |
| 518 | #ifndef final_version |
| 519 | if (status == 0) { |
| 520 | outb(0x05, ioaddr + 14); |
| 521 | break; |
| 522 | } |
| 523 | #endif |
| 524 | |
| 525 | if ((status & 0xF0) != 0x20) { /* There was an error. */ |
| 526 | lp->stats.rx_errors++; |
| 527 | if (status & 0x08) lp->stats.rx_length_errors++; |
| 528 | if (status & 0x04) lp->stats.rx_frame_errors++; |
| 529 | if (status & 0x02) lp->stats.rx_crc_errors++; |
| 530 | if (status & 0x01) lp->stats.rx_over_errors++; |
| 531 | } else { |
| 532 | ushort pkt_len = inw(ioaddr + DATAPORT); |
| 533 | /* Malloc up new buffer. */ |
| 534 | struct sk_buff *skb; |
| 535 | |
| 536 | if (pkt_len > 1550) { |
| 537 | printk("%s: The FMV-18x claimed a very large packet, size %d.\n", |
| 538 | dev->name, pkt_len); |
| 539 | outb(0x05, ioaddr + 14); |
| 540 | lp->stats.rx_errors++; |
| 541 | break; |
| 542 | } |
| 543 | skb = dev_alloc_skb(pkt_len+3); |
| 544 | if (skb == NULL) { |
| 545 | printk("%s: Memory squeeze, dropping packet (len %d).\n", |
| 546 | dev->name, pkt_len); |
| 547 | outb(0x05, ioaddr + 14); |
| 548 | lp->stats.rx_dropped++; |
| 549 | break; |
| 550 | } |
| 551 | skb->dev = dev; |
| 552 | skb_reserve(skb,2); |
| 553 | |
| 554 | insw(ioaddr + DATAPORT, skb_put(skb,pkt_len), (pkt_len + 1) >> 1); |
| 555 | |
| 556 | if (net_debug > 5) { |
| 557 | int i; |
| 558 | printk("%s: Rxed packet of length %d: ", dev->name, pkt_len); |
| 559 | for (i = 0; i < 14; i++) |
| 560 | printk(" %02x", skb->data[i]); |
| 561 | printk(".\n"); |
| 562 | } |
| 563 | |
| 564 | skb->protocol=eth_type_trans(skb, dev); |
| 565 | netif_rx(skb); |
| 566 | dev->last_rx = jiffies; |
| 567 | lp->stats.rx_packets++; |
| 568 | lp->stats.rx_bytes += pkt_len; |
| 569 | } |
| 570 | if (--boguscount <= 0) |
| 571 | break; |
| 572 | } |
| 573 | |
| 574 | /* If any worth-while packets have been received, dev_rint() |
| 575 | has done a mark_bh(NET_BH) for us and will work on them |
| 576 | when we get to the bottom-half routine. */ |
| 577 | { |
| 578 | int i; |
| 579 | for (i = 0; i < 20; i++) { |
| 580 | if ((inb(ioaddr + RX_MODE) & 0x40) == 0x40) |
| 581 | break; |
| 582 | (void)inw(ioaddr + DATAPORT); /* dummy status read */ |
| 583 | outb(0x05, ioaddr + 14); |
| 584 | } |
| 585 | |
| 586 | if (net_debug > 5 && i > 0) |
| 587 | printk("%s: Exint Rx packet with mode %02x after %d ticks.\n", |
| 588 | dev->name, inb(ioaddr + RX_MODE), i); |
| 589 | } |
| 590 | |
| 591 | return; |
| 592 | } |
| 593 | |
| 594 | /* The inverse routine to net_open(). */ |
| 595 | static int net_close(struct net_device *dev) |
| 596 | { |
| 597 | int ioaddr = dev->base_addr; |
| 598 | |
| 599 | ((struct net_local *)dev->priv)->open_time = 0; |
| 600 | |
| 601 | netif_stop_queue(dev); |
| 602 | |
| 603 | /* Set configuration register 0 to disable Tx and Rx. */ |
| 604 | outb(0xda, ioaddr + CONFIG_0); |
| 605 | |
| 606 | /* Update the statistics -- ToDo. */ |
| 607 | |
| 608 | /* Power-down the chip. Green, green, green! */ |
| 609 | outb(0x00, ioaddr + CONFIG_1); |
| 610 | |
| 611 | /* Set the ethernet adaptor disable IRQ */ |
| 612 | outb(0x00, ioaddr + FJ_CONFIG1); |
| 613 | |
| 614 | return 0; |
| 615 | } |
| 616 | |
| 617 | /* Get the current statistics. This may be called with the card open or |
| 618 | closed. */ |
| 619 | static struct net_device_stats *net_get_stats(struct net_device *dev) |
| 620 | { |
| 621 | struct net_local *lp = dev->priv; |
| 622 | return &lp->stats; |
| 623 | } |
| 624 | |
| 625 | /* Set or clear the multicast filter for this adaptor. |
| 626 | num_addrs == -1 Promiscuous mode, receive all packets |
| 627 | num_addrs == 0 Normal mode, clear multicast list |
| 628 | num_addrs > 0 Multicast mode, receive normal and MC packets, and do |
| 629 | best-effort filtering. |
| 630 | */ |
| 631 | |
| 632 | static void set_multicast_list(struct net_device *dev) |
| 633 | { |
| 634 | short ioaddr = dev->base_addr; |
| 635 | if (dev->mc_count || dev->flags&(IFF_PROMISC|IFF_ALLMULTI)) |
| 636 | { |
| 637 | /* |
| 638 | * We must make the kernel realise we had to move |
| 639 | * into promisc mode or we start all out war on |
| 640 | * the cable. - AC |
| 641 | */ |
| 642 | dev->flags|=IFF_PROMISC; |
| 643 | |
| 644 | outb(3, ioaddr + RX_MODE); /* Enable promiscuous mode */ |
| 645 | } |
| 646 | else |
| 647 | outb(2, ioaddr + RX_MODE); /* Disable promiscuous, use normal mode */ |
| 648 | } |
| 649 | |
| 650 | #ifdef MODULE |
| 651 | static struct net_device *dev_fmv18x; |
| 652 | |
| 653 | MODULE_PARM(io, "i"); |
| 654 | MODULE_PARM(irq, "i"); |
| 655 | MODULE_PARM(net_debug, "i"); |
| 656 | MODULE_PARM_DESC(io, "FMV-18X I/O address"); |
| 657 | MODULE_PARM_DESC(irq, "FMV-18X IRQ number"); |
| 658 | MODULE_PARM_DESC(net_debug, "FMV-18X debug level (0-1,5-6)"); |
| 659 | MODULE_LICENSE("GPL"); |
| 660 | |
| 661 | int init_module(void) |
| 662 | { |
| 663 | if (io == 0) |
| 664 | printk("fmv18x: You should not use auto-probing with insmod!\n"); |
| 665 | dev_fmv18x = fmv18x_probe(-1); |
| 666 | if (IS_ERR(dev_fmv18x)) |
| 667 | return PTR_ERR(dev_fmv18x); |
| 668 | return 0; |
| 669 | } |
| 670 | |
| 671 | void |
| 672 | cleanup_module(void) |
| 673 | { |
| 674 | unregister_netdev(dev_fmv18x); |
| 675 | free_irq(dev_fmv18x->irq, dev_fmv18x); |
| 676 | release_region(dev_fmv18x->base_addr, FMV18X_IO_EXTENT); |
| 677 | free_netdev(dev_fmv18x); |
| 678 | } |
| 679 | #endif /* MODULE */ |
| 680 | |
| 681 | /* |
| 682 | * Local variables: |
| 683 | * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c fmv18x.c" |
| 684 | * version-control: t |
| 685 | * kept-new-versions: 5 |
| 686 | * tab-width: 4 |
| 687 | * c-indent-level: 4 |
| 688 | * End: |
| 689 | */ |