1 /* epic100.c: A SMC 83c170 EPIC/100 Fast Ethernet driver for Linux. */
3 Written/copyright 1997-2001 by Donald Becker.
5 This software may be used and distributed according to the terms of
6 the GNU General Public License (GPL), incorporated herein by reference.
7 Drivers based on or derived from this code fall under the GPL and must
8 retain the authorship, copyright and license notice. This file is not
9 a complete program and may only be used when the entire operating
10 system is licensed under the GPL.
12 This driver is for the SMC83c170/175 "EPIC" series, as used on the
13 SMC EtherPower II 9432 PCI adapter, and several CardBus cards.
15 The author may be reached as becker@scyld.com, or C/O
16 Scyld Computing Corporation
17 410 Severn Ave., Suite 210
20 Information and updates available at
21 http://www.scyld.com/network/epic100.html
22 [this link no longer provides anything useful -jgarzik]
24 ---------------------------------------------------------------------
28 #define DRV_NAME "epic100"
29 #define DRV_VERSION "2.1"
30 #define DRV_RELDATE "Sept 11, 2006"
32 /* The user-configurable values.
33 These may be modified when a driver module is loaded.*/
35 static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */
37 /* Used to pass the full-duplex flag, etc. */
38 #define MAX_UNITS 8 /* More are supported, limit only on options */
39 static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
40 static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
42 /* Set the copy breakpoint for the copy-only-tiny-frames scheme.
43 Setting to > 1518 effectively disables this feature. */
44 static int rx_copybreak;
46 /* Operational parameters that are set at compile time. */
48 /* Keep the ring sizes a power of two for operational efficiency.
49 The compiler will convert <unsigned>'%'<2^N> into a bit mask.
50 Making the Tx ring too large decreases the effectiveness of channel
51 bonding and packet priority.
52 There are no ill effects from too-large receive rings. */
53 #define TX_RING_SIZE 256
54 #define TX_QUEUE_LEN 240 /* Limit ring entries actually used. */
55 #define RX_RING_SIZE 256
56 #define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct epic_tx_desc)
57 #define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct epic_rx_desc)
59 /* Operational parameters that usually are not changed. */
60 /* Time in jiffies before concluding the transmitter is hung. */
61 #define TX_TIMEOUT (2*HZ)
63 #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/
65 /* Bytes transferred to chip before transmission starts. */
66 /* Initial threshold, increased on underflow, rounded down to 4 byte units. */
67 #define TX_FIFO_THRESH 256
68 #define RX_FIFO_THRESH 1 /* 0-3, 0==32, 64,96, or 3==128 bytes */
70 #include <linux/module.h>
71 #include <linux/kernel.h>
72 #include <linux/string.h>
73 #include <linux/timer.h>
74 #include <linux/errno.h>
75 #include <linux/ioport.h>
76 #include <linux/slab.h>
77 #include <linux/interrupt.h>
78 #include <linux/pci.h>
79 #include <linux/delay.h>
80 #include <linux/netdevice.h>
81 #include <linux/etherdevice.h>
82 #include <linux/skbuff.h>
83 #include <linux/init.h>
84 #include <linux/spinlock.h>
85 #include <linux/ethtool.h>
86 #include <linux/mii.h>
87 #include <linux/crc32.h>
88 #include <linux/bitops.h>
90 #include <asm/uaccess.h>
92 /* These identify the driver base version and may not be removed. */
93 static char version[] __devinitdata =
94 DRV_NAME ".c:v1.11 1/7/2001 Written by Donald Becker <becker@scyld.com>\n";
95 static char version2[] __devinitdata =
96 " (unofficial 2.4.x kernel port, version " DRV_VERSION ", " DRV_RELDATE ")\n";
98 MODULE_AUTHOR("Donald Becker <becker@scyld.com>");
99 MODULE_DESCRIPTION("SMC 83c170 EPIC series Ethernet driver");
100 MODULE_LICENSE("GPL");
102 module_param(debug, int, 0);
103 module_param(rx_copybreak, int, 0);
104 module_param_array(options, int, NULL, 0);
105 module_param_array(full_duplex, int, NULL, 0);
106 MODULE_PARM_DESC(debug, "EPIC/100 debug level (0-5)");
107 MODULE_PARM_DESC(options, "EPIC/100: Bits 0-3: media type, bit 4: full duplex");
108 MODULE_PARM_DESC(rx_copybreak, "EPIC/100 copy breakpoint for copy-only-tiny-frames");
109 MODULE_PARM_DESC(full_duplex, "EPIC/100 full duplex setting(s) (1)");
114 I. Board Compatibility
116 This device driver is designed for the SMC "EPIC/100", the SMC
117 single-chip Ethernet controllers for PCI. This chip is used on
118 the SMC EtherPower II boards.
120 II. Board-specific settings
122 PCI bus devices are configured by the system at boot time, so no jumpers
123 need to be set on the board. The system BIOS will assign the
124 PCI INTA signal to a (preferably otherwise unused) system IRQ line.
125 Note: Kernel versions earlier than 1.3.73 do not support shared PCI
128 III. Driver operation
134 http://www.smsc.com/main/datasheets/83c171.pdf
135 http://www.smsc.com/main/datasheets/83c175.pdf
136 http://scyld.com/expert/NWay.html
137 http://www.national.com/pf/DP/DP83840A.html
144 enum chip_capability_flags { MII_PWRDWN=1, TYPE2_INTR=2, NO_MII=4 };
146 #define EPIC_TOTAL_SIZE 0x100
156 struct epic_chip_info {
158 int drv_flags; /* Driver use, intended as capability flags. */
162 /* indexed by chip_t */
163 static const struct epic_chip_info pci_id_tbl[] = {
164 { "SMSC EPIC/100 83c170", TYPE2_INTR | NO_MII | MII_PWRDWN },
165 { "SMSC EPIC/100 83c170", TYPE2_INTR },
166 { "SMSC EPIC/C 83c175", TYPE2_INTR | MII_PWRDWN },
170 static struct pci_device_id epic_pci_tbl[] = {
171 { 0x10B8, 0x0005, 0x1092, 0x0AB4, 0, 0, SMSC_83C170_0 },
172 { 0x10B8, 0x0005, PCI_ANY_ID, PCI_ANY_ID, 0, 0, SMSC_83C170 },
173 { 0x10B8, 0x0006, PCI_ANY_ID, PCI_ANY_ID,
174 PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, SMSC_83C175 },
177 MODULE_DEVICE_TABLE (pci, epic_pci_tbl);
195 /* Offsets to registers, using the (ugh) SMC names. */
196 enum epic_registers {
197 COMMAND=0, INTSTAT=4, INTMASK=8, GENCTL=0x0C, NVCTL=0x10, EECTL=0x14,
199 TEST1=0x1C, CRCCNT=0x20, ALICNT=0x24, MPCNT=0x28, /* Rx error counters. */
200 MIICtrl=0x30, MIIData=0x34, MIICfg=0x38,
201 LAN0=64, /* MAC address. */
202 MC0=80, /* Multicast filter table. */
203 RxCtrl=96, TxCtrl=112, TxSTAT=0x74,
204 PRxCDAR=0x84, RxSTAT=0xA4, EarlyRx=0xB0, PTxCDAR=0xC4, TxThresh=0xDC,
207 /* Interrupt register bits, using my own meaningful names. */
209 TxIdle=0x40000, RxIdle=0x20000, IntrSummary=0x010000,
210 PCIBusErr170=0x7000, PCIBusErr175=0x1000, PhyEvent175=0x8000,
211 RxStarted=0x0800, RxEarlyWarn=0x0400, CntFull=0x0200, TxUnderrun=0x0100,
212 TxEmpty=0x0080, TxDone=0x0020, RxError=0x0010,
213 RxOverflow=0x0008, RxFull=0x0004, RxHeader=0x0002, RxDone=0x0001,
216 StopRx=1, StartRx=2, TxQueued=4, RxQueued=8,
217 StopTxDMA=0x20, StopRxDMA=0x40, RestartTx=0x80,
220 #define EpicRemoved 0xffffffff /* Chip failed or removed (CardBus) */
222 #define EpicNapiEvent (TxEmpty | TxDone | \
223 RxDone | RxStarted | RxEarlyWarn | RxOverflow | RxFull)
224 #define EpicNormalEvent (0x0000ffff & ~EpicNapiEvent)
226 static const u16 media2miictl[16] = {
227 0, 0x0C00, 0x0C00, 0x2000, 0x0100, 0x2100, 0, 0,
228 0, 0, 0, 0, 0, 0, 0, 0 };
230 /* The EPIC100 Rx and Tx buffer descriptors. */
232 struct epic_tx_desc {
239 struct epic_rx_desc {
246 enum desc_status_bits {
250 #define PRIV_ALIGN 15 /* Required alignment mask */
251 struct epic_private {
252 struct epic_rx_desc *rx_ring;
253 struct epic_tx_desc *tx_ring;
254 /* The saved address of a sent-in-place packet/buffer, for skfree(). */
255 struct sk_buff* tx_skbuff[TX_RING_SIZE];
256 /* The addresses of receive-in-place skbuffs. */
257 struct sk_buff* rx_skbuff[RX_RING_SIZE];
259 dma_addr_t tx_ring_dma;
260 dma_addr_t rx_ring_dma;
263 spinlock_t lock; /* Group with Tx control cache line. */
264 spinlock_t napi_lock;
265 struct napi_struct napi;
266 unsigned int reschedule_in_poll;
267 unsigned int cur_tx, dirty_tx;
269 unsigned int cur_rx, dirty_rx;
271 unsigned int rx_buf_sz; /* Based on MTU+slack. */
273 struct pci_dev *pci_dev; /* PCI bus location. */
274 int chip_id, chip_flags;
276 struct net_device_stats stats;
277 struct timer_list timer; /* Media selection timer. */
279 unsigned char mc_filter[8];
280 signed char phys[4]; /* MII device addresses. */
281 u16 advertising; /* NWay media advertisement */
283 struct mii_if_info mii;
284 unsigned int tx_full:1; /* The Tx queue is full. */
285 unsigned int default_port:4; /* Last dev->if_port value. */
288 static int epic_open(struct net_device *dev);
289 static int read_eeprom(long ioaddr, int location);
290 static int mdio_read(struct net_device *dev, int phy_id, int location);
291 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val);
292 static void epic_restart(struct net_device *dev);
293 static void epic_timer(unsigned long data);
294 static void epic_tx_timeout(struct net_device *dev);
295 static void epic_init_ring(struct net_device *dev);
296 static int epic_start_xmit(struct sk_buff *skb, struct net_device *dev);
297 static int epic_rx(struct net_device *dev, int budget);
298 static int epic_poll(struct napi_struct *napi, int budget);
299 static irqreturn_t epic_interrupt(int irq, void *dev_instance);
300 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
301 static const struct ethtool_ops netdev_ethtool_ops;
302 static int epic_close(struct net_device *dev);
303 static struct net_device_stats *epic_get_stats(struct net_device *dev);
304 static void set_rx_mode(struct net_device *dev);
308 static int __devinit epic_init_one (struct pci_dev *pdev,
309 const struct pci_device_id *ent)
311 static int card_idx = -1;
313 int chip_idx = (int) ent->driver_data;
315 struct net_device *dev;
316 struct epic_private *ep;
317 int i, ret, option = 0, duplex = 0;
320 DECLARE_MAC_BUF(mac);
322 /* when built into the kernel, we only print version if device is found */
324 static int printed_version;
325 if (!printed_version++)
326 printk (KERN_INFO "%s" KERN_INFO "%s",
332 ret = pci_enable_device(pdev);
337 if (pci_resource_len(pdev, 0) < EPIC_TOTAL_SIZE) {
338 dev_err(&pdev->dev, "no PCI region space\n");
340 goto err_out_disable;
343 pci_set_master(pdev);
345 ret = pci_request_regions(pdev, DRV_NAME);
347 goto err_out_disable;
351 dev = alloc_etherdev(sizeof (*ep));
353 dev_err(&pdev->dev, "no memory for eth device\n");
354 goto err_out_free_res;
356 SET_NETDEV_DEV(dev, &pdev->dev);
359 ioaddr = pci_resource_start (pdev, 0);
361 ioaddr = pci_resource_start (pdev, 1);
362 ioaddr = (long) ioremap (ioaddr, pci_resource_len (pdev, 1));
364 dev_err(&pdev->dev, "ioremap failed\n");
365 goto err_out_free_netdev;
369 pci_set_drvdata(pdev, dev);
372 ep->mii.mdio_read = mdio_read;
373 ep->mii.mdio_write = mdio_write;
374 ep->mii.phy_id_mask = 0x1f;
375 ep->mii.reg_num_mask = 0x1f;
377 ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma);
379 goto err_out_iounmap;
380 ep->tx_ring = (struct epic_tx_desc *)ring_space;
381 ep->tx_ring_dma = ring_dma;
383 ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma);
385 goto err_out_unmap_tx;
386 ep->rx_ring = (struct epic_rx_desc *)ring_space;
387 ep->rx_ring_dma = ring_dma;
389 if (dev->mem_start) {
390 option = dev->mem_start;
391 duplex = (dev->mem_start & 16) ? 1 : 0;
392 } else if (card_idx >= 0 && card_idx < MAX_UNITS) {
393 if (options[card_idx] >= 0)
394 option = options[card_idx];
395 if (full_duplex[card_idx] >= 0)
396 duplex = full_duplex[card_idx];
399 dev->base_addr = ioaddr;
402 spin_lock_init(&ep->lock);
403 spin_lock_init(&ep->napi_lock);
404 ep->reschedule_in_poll = 0;
406 /* Bring the chip out of low-power mode. */
407 outl(0x4200, ioaddr + GENCTL);
408 /* Magic?! If we don't set this bit the MII interface won't work. */
409 /* This magic is documented in SMSC app note 7.15 */
410 for (i = 16; i > 0; i--)
411 outl(0x0008, ioaddr + TEST1);
413 /* Turn on the MII transceiver. */
414 outl(0x12, ioaddr + MIICfg);
416 outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL);
417 outl(0x0200, ioaddr + GENCTL);
419 /* Note: the '175 does not have a serial EEPROM. */
420 for (i = 0; i < 3; i++)
421 ((u16 *)dev->dev_addr)[i] = le16_to_cpu(inw(ioaddr + LAN0 + i*4));
424 dev_printk(KERN_DEBUG, &pdev->dev, "EEPROM contents:\n");
425 for (i = 0; i < 64; i++)
426 printk(" %4.4x%s", read_eeprom(ioaddr, i),
427 i % 16 == 15 ? "\n" : "");
431 ep->chip_id = chip_idx;
432 ep->chip_flags = pci_id_tbl[chip_idx].drv_flags;
434 (ep->chip_flags & TYPE2_INTR ? PCIBusErr175 : PCIBusErr170)
435 | CntFull | TxUnderrun | EpicNapiEvent;
437 /* Find the connected MII xcvrs.
438 Doing this in open() would allow detecting external xcvrs later, but
439 takes much time and no cards have external MII. */
441 int phy, phy_idx = 0;
442 for (phy = 1; phy < 32 && phy_idx < sizeof(ep->phys); phy++) {
443 int mii_status = mdio_read(dev, phy, MII_BMSR);
444 if (mii_status != 0xffff && mii_status != 0x0000) {
445 ep->phys[phy_idx++] = phy;
447 "MII transceiver #%d control "
448 "%4.4x status %4.4x.\n",
449 phy, mdio_read(dev, phy, 0), mii_status);
452 ep->mii_phy_cnt = phy_idx;
455 ep->mii.advertising = mdio_read(dev, phy, MII_ADVERTISE);
457 "Autonegotiation advertising %4.4x link "
459 ep->mii.advertising, mdio_read(dev, phy, 5));
460 } else if ( ! (ep->chip_flags & NO_MII)) {
462 "***WARNING***: No MII transceiver found!\n");
463 /* Use the known PHY address of the EPII. */
466 ep->mii.phy_id = ep->phys[0];
469 /* Turn off the MII xcvr (175 only!), leave the chip in low-power mode. */
470 if (ep->chip_flags & MII_PWRDWN)
471 outl(inl(ioaddr + NVCTL) & ~0x483C, ioaddr + NVCTL);
472 outl(0x0008, ioaddr + GENCTL);
474 /* The lower four bits are the media type. */
476 ep->mii.force_media = ep->mii.full_duplex = 1;
477 dev_info(&pdev->dev, "Forced full duplex requested.\n");
479 dev->if_port = ep->default_port = option;
481 /* The Epic-specific entries in the device structure. */
482 dev->open = &epic_open;
483 dev->hard_start_xmit = &epic_start_xmit;
484 dev->stop = &epic_close;
485 dev->get_stats = &epic_get_stats;
486 dev->set_multicast_list = &set_rx_mode;
487 dev->do_ioctl = &netdev_ioctl;
488 dev->ethtool_ops = &netdev_ethtool_ops;
489 dev->watchdog_timeo = TX_TIMEOUT;
490 dev->tx_timeout = &epic_tx_timeout;
491 netif_napi_add(dev, &ep->napi, epic_poll, 64);
493 ret = register_netdev(dev);
495 goto err_out_unmap_rx;
497 printk(KERN_INFO "%s: %s at %#lx, IRQ %d, %s\n",
498 dev->name, pci_id_tbl[chip_idx].name, ioaddr, dev->irq,
499 print_mac(mac, dev->dev_addr));
505 pci_free_consistent(pdev, RX_TOTAL_SIZE, ep->rx_ring, ep->rx_ring_dma);
507 pci_free_consistent(pdev, TX_TOTAL_SIZE, ep->tx_ring, ep->tx_ring_dma);
515 pci_release_regions(pdev);
517 pci_disable_device(pdev);
521 /* Serial EEPROM section. */
523 /* EEPROM_Ctrl bits. */
524 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
525 #define EE_CS 0x02 /* EEPROM chip select. */
526 #define EE_DATA_WRITE 0x08 /* EEPROM chip data in. */
527 #define EE_WRITE_0 0x01
528 #define EE_WRITE_1 0x09
529 #define EE_DATA_READ 0x10 /* EEPROM chip data out. */
530 #define EE_ENB (0x0001 | EE_CS)
532 /* Delay between EEPROM clock transitions.
533 This serves to flush the operation to the PCI bus.
536 #define eeprom_delay() inl(ee_addr)
538 /* The EEPROM commands include the alway-set leading bit. */
539 #define EE_WRITE_CMD (5 << 6)
540 #define EE_READ64_CMD (6 << 6)
541 #define EE_READ256_CMD (6 << 8)
542 #define EE_ERASE_CMD (7 << 6)
544 static void epic_disable_int(struct net_device *dev, struct epic_private *ep)
546 long ioaddr = dev->base_addr;
548 outl(0x00000000, ioaddr + INTMASK);
551 static inline void __epic_pci_commit(long ioaddr)
554 inl(ioaddr + INTMASK);
558 static inline void epic_napi_irq_off(struct net_device *dev,
559 struct epic_private *ep)
561 long ioaddr = dev->base_addr;
563 outl(ep->irq_mask & ~EpicNapiEvent, ioaddr + INTMASK);
564 __epic_pci_commit(ioaddr);
567 static inline void epic_napi_irq_on(struct net_device *dev,
568 struct epic_private *ep)
570 long ioaddr = dev->base_addr;
572 /* No need to commit possible posted write */
573 outl(ep->irq_mask | EpicNapiEvent, ioaddr + INTMASK);
576 static int __devinit read_eeprom(long ioaddr, int location)
580 long ee_addr = ioaddr + EECTL;
581 int read_cmd = location |
582 (inl(ee_addr) & 0x40 ? EE_READ64_CMD : EE_READ256_CMD);
584 outl(EE_ENB & ~EE_CS, ee_addr);
585 outl(EE_ENB, ee_addr);
587 /* Shift the read command bits out. */
588 for (i = 12; i >= 0; i--) {
589 short dataval = (read_cmd & (1 << i)) ? EE_WRITE_1 : EE_WRITE_0;
590 outl(EE_ENB | dataval, ee_addr);
592 outl(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
595 outl(EE_ENB, ee_addr);
597 for (i = 16; i > 0; i--) {
598 outl(EE_ENB | EE_SHIFT_CLK, ee_addr);
600 retval = (retval << 1) | ((inl(ee_addr) & EE_DATA_READ) ? 1 : 0);
601 outl(EE_ENB, ee_addr);
605 /* Terminate the EEPROM access. */
606 outl(EE_ENB & ~EE_CS, ee_addr);
611 #define MII_WRITEOP 2
612 static int mdio_read(struct net_device *dev, int phy_id, int location)
614 long ioaddr = dev->base_addr;
615 int read_cmd = (phy_id << 9) | (location << 4) | MII_READOP;
618 outl(read_cmd, ioaddr + MIICtrl);
619 /* Typical operation takes 25 loops. */
620 for (i = 400; i > 0; i--) {
622 if ((inl(ioaddr + MIICtrl) & MII_READOP) == 0) {
623 /* Work around read failure bug. */
624 if (phy_id == 1 && location < 6
625 && inw(ioaddr + MIIData) == 0xffff) {
626 outl(read_cmd, ioaddr + MIICtrl);
629 return inw(ioaddr + MIIData);
635 static void mdio_write(struct net_device *dev, int phy_id, int loc, int value)
637 long ioaddr = dev->base_addr;
640 outw(value, ioaddr + MIIData);
641 outl((phy_id << 9) | (loc << 4) | MII_WRITEOP, ioaddr + MIICtrl);
642 for (i = 10000; i > 0; i--) {
644 if ((inl(ioaddr + MIICtrl) & MII_WRITEOP) == 0)
651 static int epic_open(struct net_device *dev)
653 struct epic_private *ep = dev->priv;
654 long ioaddr = dev->base_addr;
658 /* Soft reset the chip. */
659 outl(0x4001, ioaddr + GENCTL);
661 napi_enable(&ep->napi);
662 if ((retval = request_irq(dev->irq, &epic_interrupt, IRQF_SHARED, dev->name, dev))) {
663 napi_disable(&ep->napi);
669 outl(0x4000, ioaddr + GENCTL);
670 /* This magic is documented in SMSC app note 7.15 */
671 for (i = 16; i > 0; i--)
672 outl(0x0008, ioaddr + TEST1);
674 /* Pull the chip out of low-power mode, enable interrupts, and set for
675 PCI read multiple. The MIIcfg setting and strange write order are
676 required by the details of which bits are reset and the transceiver
677 wiring on the Ositech CardBus card.
680 outl(dev->if_port == 1 ? 0x13 : 0x12, ioaddr + MIICfg);
682 if (ep->chip_flags & MII_PWRDWN)
683 outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL);
685 #if defined(__powerpc__) || defined(__sparc__) /* Big endian */
686 outl(0x4432 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL);
687 inl(ioaddr + GENCTL);
688 outl(0x0432 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL);
690 outl(0x4412 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL);
691 inl(ioaddr + GENCTL);
692 outl(0x0412 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL);
695 udelay(20); /* Looks like EPII needs that if you want reliable RX init. FIXME: pci posting bug? */
697 for (i = 0; i < 3; i++)
698 outl(cpu_to_le16(((u16*)dev->dev_addr)[i]), ioaddr + LAN0 + i*4);
700 ep->tx_threshold = TX_FIFO_THRESH;
701 outl(ep->tx_threshold, ioaddr + TxThresh);
703 if (media2miictl[dev->if_port & 15]) {
705 mdio_write(dev, ep->phys[0], MII_BMCR, media2miictl[dev->if_port&15]);
706 if (dev->if_port == 1) {
708 printk(KERN_INFO "%s: Using the 10base2 transceiver, MII "
710 dev->name, mdio_read(dev, ep->phys[0], MII_BMSR));
713 int mii_lpa = mdio_read(dev, ep->phys[0], MII_LPA);
714 if (mii_lpa != 0xffff) {
715 if ((mii_lpa & LPA_100FULL) || (mii_lpa & 0x01C0) == LPA_10FULL)
716 ep->mii.full_duplex = 1;
717 else if (! (mii_lpa & LPA_LPACK))
718 mdio_write(dev, ep->phys[0], MII_BMCR, BMCR_ANENABLE|BMCR_ANRESTART);
720 printk(KERN_INFO "%s: Setting %s-duplex based on MII xcvr %d"
721 " register read of %4.4x.\n", dev->name,
722 ep->mii.full_duplex ? "full" : "half",
723 ep->phys[0], mii_lpa);
727 outl(ep->mii.full_duplex ? 0x7F : 0x79, ioaddr + TxCtrl);
728 outl(ep->rx_ring_dma, ioaddr + PRxCDAR);
729 outl(ep->tx_ring_dma, ioaddr + PTxCDAR);
731 /* Start the chip's Rx process. */
733 outl(StartRx | RxQueued, ioaddr + COMMAND);
735 netif_start_queue(dev);
737 /* Enable interrupts by setting the interrupt mask. */
738 outl((ep->chip_flags & TYPE2_INTR ? PCIBusErr175 : PCIBusErr170)
739 | CntFull | TxUnderrun
740 | RxError | RxHeader | EpicNapiEvent, ioaddr + INTMASK);
743 printk(KERN_DEBUG "%s: epic_open() ioaddr %lx IRQ %d status %4.4x "
745 dev->name, ioaddr, dev->irq, (int)inl(ioaddr + GENCTL),
746 ep->mii.full_duplex ? "full" : "half");
748 /* Set the timer to switch to check for link beat and perhaps switch
749 to an alternate media type. */
750 init_timer(&ep->timer);
751 ep->timer.expires = jiffies + 3*HZ;
752 ep->timer.data = (unsigned long)dev;
753 ep->timer.function = &epic_timer; /* timer handler */
754 add_timer(&ep->timer);
759 /* Reset the chip to recover from a PCI transaction error.
760 This may occur at interrupt time. */
761 static void epic_pause(struct net_device *dev)
763 long ioaddr = dev->base_addr;
764 struct epic_private *ep = dev->priv;
766 netif_stop_queue (dev);
768 /* Disable interrupts by clearing the interrupt mask. */
769 outl(0x00000000, ioaddr + INTMASK);
770 /* Stop the chip's Tx and Rx DMA processes. */
771 outw(StopRx | StopTxDMA | StopRxDMA, ioaddr + COMMAND);
773 /* Update the error counts. */
774 if (inw(ioaddr + COMMAND) != 0xffff) {
775 ep->stats.rx_missed_errors += inb(ioaddr + MPCNT);
776 ep->stats.rx_frame_errors += inb(ioaddr + ALICNT);
777 ep->stats.rx_crc_errors += inb(ioaddr + CRCCNT);
780 /* Remove the packets on the Rx queue. */
781 epic_rx(dev, RX_RING_SIZE);
784 static void epic_restart(struct net_device *dev)
786 long ioaddr = dev->base_addr;
787 struct epic_private *ep = dev->priv;
790 /* Soft reset the chip. */
791 outl(0x4001, ioaddr + GENCTL);
793 printk(KERN_DEBUG "%s: Restarting the EPIC chip, Rx %d/%d Tx %d/%d.\n",
794 dev->name, ep->cur_rx, ep->dirty_rx, ep->dirty_tx, ep->cur_tx);
797 /* This magic is documented in SMSC app note 7.15 */
798 for (i = 16; i > 0; i--)
799 outl(0x0008, ioaddr + TEST1);
801 #if defined(__powerpc__) || defined(__sparc__) /* Big endian */
802 outl(0x0432 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL);
804 outl(0x0412 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL);
806 outl(dev->if_port == 1 ? 0x13 : 0x12, ioaddr + MIICfg);
807 if (ep->chip_flags & MII_PWRDWN)
808 outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL);
810 for (i = 0; i < 3; i++)
811 outl(cpu_to_le16(((u16*)dev->dev_addr)[i]), ioaddr + LAN0 + i*4);
813 ep->tx_threshold = TX_FIFO_THRESH;
814 outl(ep->tx_threshold, ioaddr + TxThresh);
815 outl(ep->mii.full_duplex ? 0x7F : 0x79, ioaddr + TxCtrl);
816 outl(ep->rx_ring_dma + (ep->cur_rx%RX_RING_SIZE)*
817 sizeof(struct epic_rx_desc), ioaddr + PRxCDAR);
818 outl(ep->tx_ring_dma + (ep->dirty_tx%TX_RING_SIZE)*
819 sizeof(struct epic_tx_desc), ioaddr + PTxCDAR);
821 /* Start the chip's Rx process. */
823 outl(StartRx | RxQueued, ioaddr + COMMAND);
825 /* Enable interrupts by setting the interrupt mask. */
826 outl((ep->chip_flags & TYPE2_INTR ? PCIBusErr175 : PCIBusErr170)
827 | CntFull | TxUnderrun
828 | RxError | RxHeader | EpicNapiEvent, ioaddr + INTMASK);
830 printk(KERN_DEBUG "%s: epic_restart() done, cmd status %4.4x, ctl %4.4x"
831 " interrupt %4.4x.\n",
832 dev->name, (int)inl(ioaddr + COMMAND), (int)inl(ioaddr + GENCTL),
833 (int)inl(ioaddr + INTSTAT));
837 static void check_media(struct net_device *dev)
839 struct epic_private *ep = dev->priv;
840 long ioaddr = dev->base_addr;
841 int mii_lpa = ep->mii_phy_cnt ? mdio_read(dev, ep->phys[0], MII_LPA) : 0;
842 int negotiated = mii_lpa & ep->mii.advertising;
843 int duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040;
845 if (ep->mii.force_media)
847 if (mii_lpa == 0xffff) /* Bogus read */
849 if (ep->mii.full_duplex != duplex) {
850 ep->mii.full_duplex = duplex;
851 printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d link"
852 " partner capability of %4.4x.\n", dev->name,
853 ep->mii.full_duplex ? "full" : "half", ep->phys[0], mii_lpa);
854 outl(ep->mii.full_duplex ? 0x7F : 0x79, ioaddr + TxCtrl);
858 static void epic_timer(unsigned long data)
860 struct net_device *dev = (struct net_device *)data;
861 struct epic_private *ep = dev->priv;
862 long ioaddr = dev->base_addr;
863 int next_tick = 5*HZ;
866 printk(KERN_DEBUG "%s: Media monitor tick, Tx status %8.8x.\n",
867 dev->name, (int)inl(ioaddr + TxSTAT));
868 printk(KERN_DEBUG "%s: Other registers are IntMask %4.4x "
869 "IntStatus %4.4x RxStatus %4.4x.\n",
870 dev->name, (int)inl(ioaddr + INTMASK),
871 (int)inl(ioaddr + INTSTAT), (int)inl(ioaddr + RxSTAT));
876 ep->timer.expires = jiffies + next_tick;
877 add_timer(&ep->timer);
880 static void epic_tx_timeout(struct net_device *dev)
882 struct epic_private *ep = dev->priv;
883 long ioaddr = dev->base_addr;
886 printk(KERN_WARNING "%s: Transmit timeout using MII device, "
887 "Tx status %4.4x.\n",
888 dev->name, (int)inw(ioaddr + TxSTAT));
890 printk(KERN_DEBUG "%s: Tx indices: dirty_tx %d, cur_tx %d.\n",
891 dev->name, ep->dirty_tx, ep->cur_tx);
894 if (inw(ioaddr + TxSTAT) & 0x10) { /* Tx FIFO underflow. */
895 ep->stats.tx_fifo_errors++;
896 outl(RestartTx, ioaddr + COMMAND);
899 outl(TxQueued, dev->base_addr + COMMAND);
902 dev->trans_start = jiffies;
903 ep->stats.tx_errors++;
905 netif_wake_queue(dev);
908 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
909 static void epic_init_ring(struct net_device *dev)
911 struct epic_private *ep = dev->priv;
915 ep->dirty_tx = ep->cur_tx = 0;
916 ep->cur_rx = ep->dirty_rx = 0;
917 ep->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
919 /* Initialize all Rx descriptors. */
920 for (i = 0; i < RX_RING_SIZE; i++) {
921 ep->rx_ring[i].rxstatus = 0;
922 ep->rx_ring[i].buflength = cpu_to_le32(ep->rx_buf_sz);
923 ep->rx_ring[i].next = ep->rx_ring_dma +
924 (i+1)*sizeof(struct epic_rx_desc);
925 ep->rx_skbuff[i] = NULL;
927 /* Mark the last entry as wrapping the ring. */
928 ep->rx_ring[i-1].next = ep->rx_ring_dma;
930 /* Fill in the Rx buffers. Handle allocation failure gracefully. */
931 for (i = 0; i < RX_RING_SIZE; i++) {
932 struct sk_buff *skb = dev_alloc_skb(ep->rx_buf_sz);
933 ep->rx_skbuff[i] = skb;
936 skb_reserve(skb, 2); /* 16 byte align the IP header. */
937 ep->rx_ring[i].bufaddr = pci_map_single(ep->pci_dev,
938 skb->data, ep->rx_buf_sz, PCI_DMA_FROMDEVICE);
939 ep->rx_ring[i].rxstatus = cpu_to_le32(DescOwn);
941 ep->dirty_rx = (unsigned int)(i - RX_RING_SIZE);
943 /* The Tx buffer descriptor is filled in as needed, but we
944 do need to clear the ownership bit. */
945 for (i = 0; i < TX_RING_SIZE; i++) {
946 ep->tx_skbuff[i] = NULL;
947 ep->tx_ring[i].txstatus = 0x0000;
948 ep->tx_ring[i].next = ep->tx_ring_dma +
949 (i+1)*sizeof(struct epic_tx_desc);
951 ep->tx_ring[i-1].next = ep->tx_ring_dma;
955 static int epic_start_xmit(struct sk_buff *skb, struct net_device *dev)
957 struct epic_private *ep = dev->priv;
958 int entry, free_count;
962 if (skb_padto(skb, ETH_ZLEN))
965 /* Caution: the write order is important here, set the field with the
966 "ownership" bit last. */
968 /* Calculate the next Tx descriptor entry. */
969 spin_lock_irqsave(&ep->lock, flags);
970 free_count = ep->cur_tx - ep->dirty_tx;
971 entry = ep->cur_tx % TX_RING_SIZE;
973 ep->tx_skbuff[entry] = skb;
974 ep->tx_ring[entry].bufaddr = pci_map_single(ep->pci_dev, skb->data,
975 skb->len, PCI_DMA_TODEVICE);
976 if (free_count < TX_QUEUE_LEN/2) {/* Typical path */
977 ctrl_word = cpu_to_le32(0x100000); /* No interrupt */
978 } else if (free_count == TX_QUEUE_LEN/2) {
979 ctrl_word = cpu_to_le32(0x140000); /* Tx-done intr. */
980 } else if (free_count < TX_QUEUE_LEN - 1) {
981 ctrl_word = cpu_to_le32(0x100000); /* No Tx-done intr. */
983 /* Leave room for an additional entry. */
984 ctrl_word = cpu_to_le32(0x140000); /* Tx-done intr. */
987 ep->tx_ring[entry].buflength = ctrl_word | cpu_to_le32(skb->len);
988 ep->tx_ring[entry].txstatus =
989 ((skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN) << 16)
990 | cpu_to_le32(DescOwn);
994 netif_stop_queue(dev);
996 spin_unlock_irqrestore(&ep->lock, flags);
997 /* Trigger an immediate transmit demand. */
998 outl(TxQueued, dev->base_addr + COMMAND);
1000 dev->trans_start = jiffies;
1002 printk(KERN_DEBUG "%s: Queued Tx packet size %d to slot %d, "
1003 "flag %2.2x Tx status %8.8x.\n",
1004 dev->name, (int)skb->len, entry, ctrl_word,
1005 (int)inl(dev->base_addr + TxSTAT));
1010 static void epic_tx_error(struct net_device *dev, struct epic_private *ep,
1013 struct net_device_stats *stats = &ep->stats;
1015 #ifndef final_version
1016 /* There was an major error, log it. */
1018 printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n",
1022 if (status & 0x1050)
1023 stats->tx_aborted_errors++;
1024 if (status & 0x0008)
1025 stats->tx_carrier_errors++;
1026 if (status & 0x0040)
1027 stats->tx_window_errors++;
1028 if (status & 0x0010)
1029 stats->tx_fifo_errors++;
1032 static void epic_tx(struct net_device *dev, struct epic_private *ep)
1034 unsigned int dirty_tx, cur_tx;
1037 * Note: if this lock becomes a problem we can narrow the locked
1038 * region at the cost of occasionally grabbing the lock more times.
1040 cur_tx = ep->cur_tx;
1041 for (dirty_tx = ep->dirty_tx; cur_tx - dirty_tx > 0; dirty_tx++) {
1042 struct sk_buff *skb;
1043 int entry = dirty_tx % TX_RING_SIZE;
1044 int txstatus = le32_to_cpu(ep->tx_ring[entry].txstatus);
1046 if (txstatus & DescOwn)
1047 break; /* It still hasn't been Txed */
1049 if (likely(txstatus & 0x0001)) {
1050 ep->stats.collisions += (txstatus >> 8) & 15;
1051 ep->stats.tx_packets++;
1052 ep->stats.tx_bytes += ep->tx_skbuff[entry]->len;
1054 epic_tx_error(dev, ep, txstatus);
1056 /* Free the original skb. */
1057 skb = ep->tx_skbuff[entry];
1058 pci_unmap_single(ep->pci_dev, ep->tx_ring[entry].bufaddr,
1059 skb->len, PCI_DMA_TODEVICE);
1060 dev_kfree_skb_irq(skb);
1061 ep->tx_skbuff[entry] = NULL;
1064 #ifndef final_version
1065 if (cur_tx - dirty_tx > TX_RING_SIZE) {
1067 "%s: Out-of-sync dirty pointer, %d vs. %d, full=%d.\n",
1068 dev->name, dirty_tx, cur_tx, ep->tx_full);
1069 dirty_tx += TX_RING_SIZE;
1072 ep->dirty_tx = dirty_tx;
1073 if (ep->tx_full && cur_tx - dirty_tx < TX_QUEUE_LEN - 4) {
1074 /* The ring is no longer full, allow new TX entries. */
1076 netif_wake_queue(dev);
1080 /* The interrupt handler does all of the Rx thread work and cleans up
1081 after the Tx thread. */
1082 static irqreturn_t epic_interrupt(int irq, void *dev_instance)
1084 struct net_device *dev = dev_instance;
1085 struct epic_private *ep = dev->priv;
1086 long ioaddr = dev->base_addr;
1087 unsigned int handled = 0;
1090 status = inl(ioaddr + INTSTAT);
1091 /* Acknowledge all of the current interrupt sources ASAP. */
1092 outl(status & EpicNormalEvent, ioaddr + INTSTAT);
1095 printk(KERN_DEBUG "%s: Interrupt, status=%#8.8x new "
1096 "intstat=%#8.8x.\n", dev->name, status,
1097 (int)inl(ioaddr + INTSTAT));
1100 if ((status & IntrSummary) == 0)
1105 if ((status & EpicNapiEvent) && !ep->reschedule_in_poll) {
1106 spin_lock(&ep->napi_lock);
1107 if (netif_rx_schedule_prep(dev, &ep->napi)) {
1108 epic_napi_irq_off(dev, ep);
1109 __netif_rx_schedule(dev, &ep->napi);
1111 ep->reschedule_in_poll++;
1112 spin_unlock(&ep->napi_lock);
1114 status &= ~EpicNapiEvent;
1116 /* Check uncommon events all at once. */
1117 if (status & (CntFull | TxUnderrun | PCIBusErr170 | PCIBusErr175)) {
1118 if (status == EpicRemoved)
1121 /* Always update the error counts to avoid overhead later. */
1122 ep->stats.rx_missed_errors += inb(ioaddr + MPCNT);
1123 ep->stats.rx_frame_errors += inb(ioaddr + ALICNT);
1124 ep->stats.rx_crc_errors += inb(ioaddr + CRCCNT);
1126 if (status & TxUnderrun) { /* Tx FIFO underflow. */
1127 ep->stats.tx_fifo_errors++;
1128 outl(ep->tx_threshold += 128, ioaddr + TxThresh);
1129 /* Restart the transmit process. */
1130 outl(RestartTx, ioaddr + COMMAND);
1132 if (status & PCIBusErr170) {
1133 printk(KERN_ERR "%s: PCI Bus Error! status %4.4x.\n",
1138 /* Clear all error sources. */
1139 outl(status & 0x7f18, ioaddr + INTSTAT);
1144 printk(KERN_DEBUG "%s: exit interrupt, intr_status=%#4.4x.\n",
1148 return IRQ_RETVAL(handled);
1151 static int epic_rx(struct net_device *dev, int budget)
1153 struct epic_private *ep = dev->priv;
1154 int entry = ep->cur_rx % RX_RING_SIZE;
1155 int rx_work_limit = ep->dirty_rx + RX_RING_SIZE - ep->cur_rx;
1159 printk(KERN_DEBUG " In epic_rx(), entry %d %8.8x.\n", entry,
1160 ep->rx_ring[entry].rxstatus);
1162 if (rx_work_limit > budget)
1163 rx_work_limit = budget;
1165 /* If we own the next entry, it's a new packet. Send it up. */
1166 while ((ep->rx_ring[entry].rxstatus & cpu_to_le32(DescOwn)) == 0) {
1167 int status = le32_to_cpu(ep->rx_ring[entry].rxstatus);
1170 printk(KERN_DEBUG " epic_rx() status was %8.8x.\n", status);
1171 if (--rx_work_limit < 0)
1173 if (status & 0x2006) {
1175 printk(KERN_DEBUG "%s: epic_rx() error status was %8.8x.\n",
1177 if (status & 0x2000) {
1178 printk(KERN_WARNING "%s: Oversized Ethernet frame spanned "
1179 "multiple buffers, status %4.4x!\n", dev->name, status);
1180 ep->stats.rx_length_errors++;
1181 } else if (status & 0x0006)
1182 /* Rx Frame errors are counted in hardware. */
1183 ep->stats.rx_errors++;
1185 /* Malloc up new buffer, compatible with net-2e. */
1186 /* Omit the four octet CRC from the length. */
1187 short pkt_len = (status >> 16) - 4;
1188 struct sk_buff *skb;
1190 if (pkt_len > PKT_BUF_SZ - 4) {
1191 printk(KERN_ERR "%s: Oversized Ethernet frame, status %x "
1193 dev->name, status, pkt_len);
1196 /* Check if the packet is long enough to accept without copying
1197 to a minimally-sized skbuff. */
1198 if (pkt_len < rx_copybreak
1199 && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) {
1200 skb_reserve(skb, 2); /* 16 byte align the IP header */
1201 pci_dma_sync_single_for_cpu(ep->pci_dev,
1202 ep->rx_ring[entry].bufaddr,
1204 PCI_DMA_FROMDEVICE);
1205 skb_copy_to_linear_data(skb, ep->rx_skbuff[entry]->data, pkt_len);
1206 skb_put(skb, pkt_len);
1207 pci_dma_sync_single_for_device(ep->pci_dev,
1208 ep->rx_ring[entry].bufaddr,
1210 PCI_DMA_FROMDEVICE);
1212 pci_unmap_single(ep->pci_dev,
1213 ep->rx_ring[entry].bufaddr,
1214 ep->rx_buf_sz, PCI_DMA_FROMDEVICE);
1215 skb_put(skb = ep->rx_skbuff[entry], pkt_len);
1216 ep->rx_skbuff[entry] = NULL;
1218 skb->protocol = eth_type_trans(skb, dev);
1219 netif_receive_skb(skb);
1220 dev->last_rx = jiffies;
1221 ep->stats.rx_packets++;
1222 ep->stats.rx_bytes += pkt_len;
1225 entry = (++ep->cur_rx) % RX_RING_SIZE;
1228 /* Refill the Rx ring buffers. */
1229 for (; ep->cur_rx - ep->dirty_rx > 0; ep->dirty_rx++) {
1230 entry = ep->dirty_rx % RX_RING_SIZE;
1231 if (ep->rx_skbuff[entry] == NULL) {
1232 struct sk_buff *skb;
1233 skb = ep->rx_skbuff[entry] = dev_alloc_skb(ep->rx_buf_sz);
1236 skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
1237 ep->rx_ring[entry].bufaddr = pci_map_single(ep->pci_dev,
1238 skb->data, ep->rx_buf_sz, PCI_DMA_FROMDEVICE);
1241 ep->rx_ring[entry].rxstatus = cpu_to_le32(DescOwn);
1246 static void epic_rx_err(struct net_device *dev, struct epic_private *ep)
1248 long ioaddr = dev->base_addr;
1251 status = inl(ioaddr + INTSTAT);
1253 if (status == EpicRemoved)
1255 if (status & RxOverflow) /* Missed a Rx frame. */
1256 ep->stats.rx_errors++;
1257 if (status & (RxOverflow | RxFull))
1258 outw(RxQueued, ioaddr + COMMAND);
1261 static int epic_poll(struct napi_struct *napi, int budget)
1263 struct epic_private *ep = container_of(napi, struct epic_private, napi);
1264 struct net_device *dev = ep->mii.dev;
1266 long ioaddr = dev->base_addr;
1272 work_done += epic_rx(dev, budget);
1274 epic_rx_err(dev, ep);
1276 if (work_done < budget) {
1277 unsigned long flags;
1280 /* A bit baroque but it avoids a (space hungry) spin_unlock */
1282 spin_lock_irqsave(&ep->napi_lock, flags);
1284 more = ep->reschedule_in_poll;
1286 __netif_rx_complete(dev, napi);
1287 outl(EpicNapiEvent, ioaddr + INTSTAT);
1288 epic_napi_irq_on(dev, ep);
1290 ep->reschedule_in_poll--;
1292 spin_unlock_irqrestore(&ep->napi_lock, flags);
1301 static int epic_close(struct net_device *dev)
1303 long ioaddr = dev->base_addr;
1304 struct epic_private *ep = dev->priv;
1305 struct sk_buff *skb;
1308 netif_stop_queue(dev);
1309 napi_disable(&ep->napi);
1312 printk(KERN_DEBUG "%s: Shutting down ethercard, status was %2.2x.\n",
1313 dev->name, (int)inl(ioaddr + INTSTAT));
1315 del_timer_sync(&ep->timer);
1317 epic_disable_int(dev, ep);
1319 free_irq(dev->irq, dev);
1323 /* Free all the skbuffs in the Rx queue. */
1324 for (i = 0; i < RX_RING_SIZE; i++) {
1325 skb = ep->rx_skbuff[i];
1326 ep->rx_skbuff[i] = NULL;
1327 ep->rx_ring[i].rxstatus = 0; /* Not owned by Epic chip. */
1328 ep->rx_ring[i].buflength = 0;
1330 pci_unmap_single(ep->pci_dev, ep->rx_ring[i].bufaddr,
1331 ep->rx_buf_sz, PCI_DMA_FROMDEVICE);
1334 ep->rx_ring[i].bufaddr = 0xBADF00D0; /* An invalid address. */
1336 for (i = 0; i < TX_RING_SIZE; i++) {
1337 skb = ep->tx_skbuff[i];
1338 ep->tx_skbuff[i] = NULL;
1341 pci_unmap_single(ep->pci_dev, ep->tx_ring[i].bufaddr,
1342 skb->len, PCI_DMA_TODEVICE);
1346 /* Green! Leave the chip in low-power mode. */
1347 outl(0x0008, ioaddr + GENCTL);
1352 static struct net_device_stats *epic_get_stats(struct net_device *dev)
1354 struct epic_private *ep = dev->priv;
1355 long ioaddr = dev->base_addr;
1357 if (netif_running(dev)) {
1358 /* Update the error counts. */
1359 ep->stats.rx_missed_errors += inb(ioaddr + MPCNT);
1360 ep->stats.rx_frame_errors += inb(ioaddr + ALICNT);
1361 ep->stats.rx_crc_errors += inb(ioaddr + CRCCNT);
1367 /* Set or clear the multicast filter for this adaptor.
1368 Note that we only use exclusion around actually queueing the
1369 new frame, not around filling ep->setup_frame. This is non-deterministic
1370 when re-entered but still correct. */
1372 static void set_rx_mode(struct net_device *dev)
1374 long ioaddr = dev->base_addr;
1375 struct epic_private *ep = dev->priv;
1376 unsigned char mc_filter[8]; /* Multicast hash filter */
1379 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1380 outl(0x002C, ioaddr + RxCtrl);
1381 /* Unconditionally log net taps. */
1382 memset(mc_filter, 0xff, sizeof(mc_filter));
1383 } else if ((dev->mc_count > 0) || (dev->flags & IFF_ALLMULTI)) {
1384 /* There is apparently a chip bug, so the multicast filter
1385 is never enabled. */
1386 /* Too many to filter perfectly -- accept all multicasts. */
1387 memset(mc_filter, 0xff, sizeof(mc_filter));
1388 outl(0x000C, ioaddr + RxCtrl);
1389 } else if (dev->mc_count == 0) {
1390 outl(0x0004, ioaddr + RxCtrl);
1392 } else { /* Never executed, for now. */
1393 struct dev_mc_list *mclist;
1395 memset(mc_filter, 0, sizeof(mc_filter));
1396 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
1397 i++, mclist = mclist->next) {
1398 unsigned int bit_nr =
1399 ether_crc_le(ETH_ALEN, mclist->dmi_addr) & 0x3f;
1400 mc_filter[bit_nr >> 3] |= (1 << bit_nr);
1403 /* ToDo: perhaps we need to stop the Tx and Rx process here? */
1404 if (memcmp(mc_filter, ep->mc_filter, sizeof(mc_filter))) {
1405 for (i = 0; i < 4; i++)
1406 outw(((u16 *)mc_filter)[i], ioaddr + MC0 + i*4);
1407 memcpy(ep->mc_filter, mc_filter, sizeof(mc_filter));
1412 static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
1414 struct epic_private *np = dev->priv;
1416 strcpy (info->driver, DRV_NAME);
1417 strcpy (info->version, DRV_VERSION);
1418 strcpy (info->bus_info, pci_name(np->pci_dev));
1421 static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1423 struct epic_private *np = dev->priv;
1426 spin_lock_irq(&np->lock);
1427 rc = mii_ethtool_gset(&np->mii, cmd);
1428 spin_unlock_irq(&np->lock);
1433 static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1435 struct epic_private *np = dev->priv;
1438 spin_lock_irq(&np->lock);
1439 rc = mii_ethtool_sset(&np->mii, cmd);
1440 spin_unlock_irq(&np->lock);
1445 static int netdev_nway_reset(struct net_device *dev)
1447 struct epic_private *np = dev->priv;
1448 return mii_nway_restart(&np->mii);
1451 static u32 netdev_get_link(struct net_device *dev)
1453 struct epic_private *np = dev->priv;
1454 return mii_link_ok(&np->mii);
1457 static u32 netdev_get_msglevel(struct net_device *dev)
1462 static void netdev_set_msglevel(struct net_device *dev, u32 value)
1467 static int ethtool_begin(struct net_device *dev)
1469 unsigned long ioaddr = dev->base_addr;
1470 /* power-up, if interface is down */
1471 if (! netif_running(dev)) {
1472 outl(0x0200, ioaddr + GENCTL);
1473 outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL);
1478 static void ethtool_complete(struct net_device *dev)
1480 unsigned long ioaddr = dev->base_addr;
1481 /* power-down, if interface is down */
1482 if (! netif_running(dev)) {
1483 outl(0x0008, ioaddr + GENCTL);
1484 outl((inl(ioaddr + NVCTL) & ~0x483C) | 0x0000, ioaddr + NVCTL);
1488 static const struct ethtool_ops netdev_ethtool_ops = {
1489 .get_drvinfo = netdev_get_drvinfo,
1490 .get_settings = netdev_get_settings,
1491 .set_settings = netdev_set_settings,
1492 .nway_reset = netdev_nway_reset,
1493 .get_link = netdev_get_link,
1494 .get_msglevel = netdev_get_msglevel,
1495 .set_msglevel = netdev_set_msglevel,
1496 .begin = ethtool_begin,
1497 .complete = ethtool_complete
1500 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1502 struct epic_private *np = dev->priv;
1503 long ioaddr = dev->base_addr;
1504 struct mii_ioctl_data *data = if_mii(rq);
1507 /* power-up, if interface is down */
1508 if (! netif_running(dev)) {
1509 outl(0x0200, ioaddr + GENCTL);
1510 outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL);
1513 /* all non-ethtool ioctls (the SIOC[GS]MIIxxx ioctls) */
1514 spin_lock_irq(&np->lock);
1515 rc = generic_mii_ioctl(&np->mii, data, cmd, NULL);
1516 spin_unlock_irq(&np->lock);
1518 /* power-down, if interface is down */
1519 if (! netif_running(dev)) {
1520 outl(0x0008, ioaddr + GENCTL);
1521 outl((inl(ioaddr + NVCTL) & ~0x483C) | 0x0000, ioaddr + NVCTL);
1527 static void __devexit epic_remove_one (struct pci_dev *pdev)
1529 struct net_device *dev = pci_get_drvdata(pdev);
1530 struct epic_private *ep = dev->priv;
1532 pci_free_consistent(pdev, TX_TOTAL_SIZE, ep->tx_ring, ep->tx_ring_dma);
1533 pci_free_consistent(pdev, RX_TOTAL_SIZE, ep->rx_ring, ep->rx_ring_dma);
1534 unregister_netdev(dev);
1536 iounmap((void*) dev->base_addr);
1538 pci_release_regions(pdev);
1540 pci_disable_device(pdev);
1541 pci_set_drvdata(pdev, NULL);
1542 /* pci_power_off(pdev, -1); */
1548 static int epic_suspend (struct pci_dev *pdev, pm_message_t state)
1550 struct net_device *dev = pci_get_drvdata(pdev);
1551 long ioaddr = dev->base_addr;
1553 if (!netif_running(dev))
1556 /* Put the chip into low-power mode. */
1557 outl(0x0008, ioaddr + GENCTL);
1558 /* pci_power_off(pdev, -1); */
1563 static int epic_resume (struct pci_dev *pdev)
1565 struct net_device *dev = pci_get_drvdata(pdev);
1567 if (!netif_running(dev))
1570 /* pci_power_on(pdev); */
1574 #endif /* CONFIG_PM */
1577 static struct pci_driver epic_driver = {
1579 .id_table = epic_pci_tbl,
1580 .probe = epic_init_one,
1581 .remove = __devexit_p(epic_remove_one),
1583 .suspend = epic_suspend,
1584 .resume = epic_resume,
1585 #endif /* CONFIG_PM */
1589 static int __init epic_init (void)
1591 /* when a module, this is printed whether or not devices are found in probe */
1593 printk (KERN_INFO "%s" KERN_INFO "%s",
1597 return pci_register_driver(&epic_driver);
1601 static void __exit epic_cleanup (void)
1603 pci_unregister_driver (&epic_driver);
1607 module_init(epic_init);
1608 module_exit(epic_cleanup);