1 /* sundance.c: A Linux device driver for the Sundance ST201 "Alta". */
3 Written 1999-2000 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 The author may be reached as becker@scyld.com, or C/O
13 Scyld Computing Corporation
14 410 Severn Ave., Suite 210
17 Support and updates available at
18 http://www.scyld.com/network/sundance.html
19 [link no longer provides useful info -jgarzik]
20 Archives of the mailing list are still available at
21 http://www.beowulf.org/pipermail/netdrivers/
25 #define DRV_NAME "sundance"
26 #define DRV_VERSION "1.2"
27 #define DRV_RELDATE "11-Sep-2006"
30 /* The user-configurable values.
31 These may be modified when a driver module is loaded.*/
32 static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */
33 /* Maximum number of multicast addresses to filter (vs. rx-all-multicast).
34 Typical is a 64 element hash table based on the Ethernet CRC. */
35 static const int multicast_filter_limit = 32;
37 /* Set the copy breakpoint for the copy-only-tiny-frames scheme.
38 Setting to > 1518 effectively disables this feature.
39 This chip can receive into offset buffers, so the Alpha does not
41 static int rx_copybreak;
42 static int flowctrl=1;
44 /* media[] specifies the media type the NIC operates at.
45 autosense Autosensing active media.
46 10mbps_hd 10Mbps half duplex.
47 10mbps_fd 10Mbps full duplex.
48 100mbps_hd 100Mbps half duplex.
49 100mbps_fd 100Mbps full duplex.
50 0 Autosensing active media.
53 3 100Mbps half duplex.
54 4 100Mbps full duplex.
57 static char *media[MAX_UNITS];
60 /* Operational parameters that are set at compile time. */
62 /* Keep the ring sizes a power of two for compile efficiency.
63 The compiler will convert <unsigned>'%'<2^N> into a bit mask.
64 Making the Tx ring too large decreases the effectiveness of channel
65 bonding and packet priority, and more than 128 requires modifying the
67 Large receive rings merely waste memory. */
68 #define TX_RING_SIZE 32
69 #define TX_QUEUE_LEN (TX_RING_SIZE - 1) /* Limit ring entries actually used. */
70 #define RX_RING_SIZE 64
72 #define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct netdev_desc)
73 #define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct netdev_desc)
75 /* Operational parameters that usually are not changed. */
76 /* Time in jiffies before concluding the transmitter is hung. */
77 #define TX_TIMEOUT (4*HZ)
78 #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/
80 /* Include files, designed to support most kernel versions 2.0.0 and later. */
81 #include <linux/module.h>
82 #include <linux/kernel.h>
83 #include <linux/string.h>
84 #include <linux/timer.h>
85 #include <linux/errno.h>
86 #include <linux/ioport.h>
87 #include <linux/slab.h>
88 #include <linux/interrupt.h>
89 #include <linux/pci.h>
90 #include <linux/netdevice.h>
91 #include <linux/etherdevice.h>
92 #include <linux/skbuff.h>
93 #include <linux/init.h>
94 #include <linux/bitops.h>
95 #include <asm/uaccess.h>
96 #include <asm/processor.h> /* Processor type for cache alignment. */
98 #include <linux/delay.h>
99 #include <linux/spinlock.h>
100 #ifndef _COMPAT_WITH_OLD_KERNEL
101 #include <linux/crc32.h>
102 #include <linux/ethtool.h>
103 #include <linux/mii.h>
111 /* These identify the driver base version and may not be removed. */
112 static char version[] =
113 KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " Written by Donald Becker\n";
115 MODULE_AUTHOR("Donald Becker <becker@scyld.com>");
116 MODULE_DESCRIPTION("Sundance Alta Ethernet driver");
117 MODULE_LICENSE("GPL");
119 module_param(debug, int, 0);
120 module_param(rx_copybreak, int, 0);
121 module_param_array(media, charp, NULL, 0);
122 module_param(flowctrl, int, 0);
123 MODULE_PARM_DESC(debug, "Sundance Alta debug level (0-5)");
124 MODULE_PARM_DESC(rx_copybreak, "Sundance Alta copy breakpoint for copy-only-tiny-frames");
125 MODULE_PARM_DESC(flowctrl, "Sundance Alta flow control [0|1]");
130 I. Board Compatibility
132 This driver is designed for the Sundance Technologies "Alta" ST201 chip.
134 II. Board-specific settings
136 III. Driver operation
140 This driver uses two statically allocated fixed-size descriptor lists
141 formed into rings by a branch from the final descriptor to the beginning of
142 the list. The ring sizes are set at compile time by RX/TX_RING_SIZE.
143 Some chips explicitly use only 2^N sized rings, while others use a
144 'next descriptor' pointer that the driver forms into rings.
146 IIIb/c. Transmit/Receive Structure
148 This driver uses a zero-copy receive and transmit scheme.
149 The driver allocates full frame size skbuffs for the Rx ring buffers at
150 open() time and passes the skb->data field to the chip as receive data
151 buffers. When an incoming frame is less than RX_COPYBREAK bytes long,
152 a fresh skbuff is allocated and the frame is copied to the new skbuff.
153 When the incoming frame is larger, the skbuff is passed directly up the
154 protocol stack. Buffers consumed this way are replaced by newly allocated
155 skbuffs in a later phase of receives.
157 The RX_COPYBREAK value is chosen to trade-off the memory wasted by
158 using a full-sized skbuff for small frames vs. the copying costs of larger
159 frames. New boards are typically used in generously configured machines
160 and the underfilled buffers have negligible impact compared to the benefit of
161 a single allocation size, so the default value of zero results in never
162 copying packets. When copying is done, the cost is usually mitigated by using
163 a combined copy/checksum routine. Copying also preloads the cache, which is
164 most useful with small frames.
166 A subtle aspect of the operation is that the IP header at offset 14 in an
167 ethernet frame isn't longword aligned for further processing.
168 Unaligned buffers are permitted by the Sundance hardware, so
169 frames are received into the skbuff at an offset of "+2", 16-byte aligning
172 IIId. Synchronization
174 The driver runs as two independent, single-threaded flows of control. One
175 is the send-packet routine, which enforces single-threaded use by the
176 dev->tbusy flag. The other thread is the interrupt handler, which is single
177 threaded by the hardware and interrupt handling software.
179 The send packet thread has partial control over the Tx ring and 'dev->tbusy'
180 flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next
181 queue slot is empty, it clears the tbusy flag when finished otherwise it sets
182 the 'lp->tx_full' flag.
184 The interrupt handler has exclusive control over the Rx ring and records stats
185 from the Tx ring. After reaping the stats, it marks the Tx queue entry as
186 empty by incrementing the dirty_tx mark. Iff the 'lp->tx_full' flag is set, it
187 clears both the tx_full and tbusy flags.
193 The Sundance ST201 datasheet, preliminary version.
194 The Kendin KS8723 datasheet, preliminary version.
195 The ICplus IP100 datasheet, preliminary version.
196 http://www.scyld.com/expert/100mbps.html
197 http://www.scyld.com/expert/NWay.html
203 /* Work-around for Kendin chip bugs. */
204 #ifndef CONFIG_SUNDANCE_MMIO
208 static const struct pci_device_id sundance_pci_tbl[] = {
209 { 0x1186, 0x1002, 0x1186, 0x1002, 0, 0, 0 },
210 { 0x1186, 0x1002, 0x1186, 0x1003, 0, 0, 1 },
211 { 0x1186, 0x1002, 0x1186, 0x1012, 0, 0, 2 },
212 { 0x1186, 0x1002, 0x1186, 0x1040, 0, 0, 3 },
213 { 0x1186, 0x1002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
214 { 0x13F0, 0x0201, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
215 { 0x13F0, 0x0200, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
218 MODULE_DEVICE_TABLE(pci, sundance_pci_tbl);
227 static const struct pci_id_info pci_id_tbl[] __devinitdata = {
228 {"D-Link DFE-550TX FAST Ethernet Adapter"},
229 {"D-Link DFE-550FX 100Mbps Fiber-optics Adapter"},
230 {"D-Link DFE-580TX 4 port Server Adapter"},
231 {"D-Link DFE-530TXS FAST Ethernet Adapter"},
232 {"D-Link DL10050-based FAST Ethernet Adapter"},
233 {"Sundance Technology Alta"},
234 {"IC Plus Corporation IP100A FAST Ethernet Adapter"},
235 { } /* terminate list. */
238 /* This driver was written to use PCI memory space, however x86-oriented
239 hardware often uses I/O space accesses. */
241 /* Offsets to the device registers.
242 Unlike software-only systems, device drivers interact with complex hardware.
243 It's not useful to define symbolic names for every register bit in the
244 device. The name can only partially document the semantics and make
245 the driver longer and more difficult to read.
246 In general, only the important configuration values or bits changed
247 multiple times should be defined symbolically.
252 TxDMABurstThresh = 0x08,
253 TxDMAUrgentThresh = 0x09,
254 TxDMAPollPeriod = 0x0a,
259 RxDMABurstThresh = 0x14,
260 RxDMAUrgentThresh = 0x15,
261 RxDMAPollPeriod = 0x16,
280 MulticastFilter0 = 0x60,
281 MulticastFilter1 = 0x64,
288 StatsCarrierError = 0x74,
289 StatsLateColl = 0x75,
290 StatsMultiColl = 0x76,
294 StatsTxXSDefer = 0x7a,
300 /* Aliased and bogus values! */
303 enum ASICCtrl_HiWord_bit {
304 GlobalReset = 0x0001,
309 NetworkReset = 0x0020,
314 /* Bits in the interrupt status/mask registers. */
315 enum intr_status_bits {
316 IntrSummary=0x0001, IntrPCIErr=0x0002, IntrMACCtrl=0x0008,
317 IntrTxDone=0x0004, IntrRxDone=0x0010, IntrRxStart=0x0020,
319 StatsMax=0x0080, LinkChange=0x0100,
320 IntrTxDMADone=0x0200, IntrRxDMADone=0x0400,
323 /* Bits in the RxMode register. */
325 AcceptAllIPMulti=0x20, AcceptMultiHash=0x10, AcceptAll=0x08,
326 AcceptBroadcast=0x04, AcceptMulticast=0x02, AcceptMyPhys=0x01,
328 /* Bits in MACCtrl. */
329 enum mac_ctrl0_bits {
330 EnbFullDuplex=0x20, EnbRcvLargeFrame=0x40,
331 EnbFlowCtrl=0x100, EnbPassRxCRC=0x200,
333 enum mac_ctrl1_bits {
334 StatsEnable=0x0020, StatsDisable=0x0040, StatsEnabled=0x0080,
335 TxEnable=0x0100, TxDisable=0x0200, TxEnabled=0x0400,
336 RxEnable=0x0800, RxDisable=0x1000, RxEnabled=0x2000,
339 /* The Rx and Tx buffer descriptors. */
340 /* Note that using only 32 bit fields simplifies conversion to big-endian
345 struct desc_frag { u32 addr, length; } frag[1];
348 /* Bits in netdev_desc.status */
349 enum desc_status_bits {
351 DescEndPacket=0x4000,
355 DescIntrOnDMADone=0x80000000,
356 DisableAlign = 0x00000001,
359 #define PRIV_ALIGN 15 /* Required alignment mask */
360 /* Use __attribute__((aligned (L1_CACHE_BYTES))) to maintain alignment
361 within the structure. */
363 struct netdev_private {
364 /* Descriptor rings first for alignment. */
365 struct netdev_desc *rx_ring;
366 struct netdev_desc *tx_ring;
367 struct sk_buff* rx_skbuff[RX_RING_SIZE];
368 struct sk_buff* tx_skbuff[TX_RING_SIZE];
369 dma_addr_t tx_ring_dma;
370 dma_addr_t rx_ring_dma;
371 struct net_device_stats stats;
372 struct timer_list timer; /* Media monitoring timer. */
373 /* Frequently used values: keep some adjacent for cache effect. */
375 spinlock_t rx_lock; /* Group with Tx control cache line. */
378 unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */
379 unsigned int rx_buf_sz; /* Based on MTU+slack. */
380 struct netdev_desc *last_tx; /* Last Tx descriptor used. */
381 unsigned int cur_tx, dirty_tx;
382 /* These values are keep track of the transceiver/media in use. */
383 unsigned int flowctrl:1;
384 unsigned int default_port:4; /* Last dev->if_port value. */
385 unsigned int an_enable:1;
387 struct tasklet_struct rx_tasklet;
388 struct tasklet_struct tx_tasklet;
391 /* Multicast and receive mode. */
392 spinlock_t mcastlock; /* SMP lock multicast updates. */
394 /* MII transceiver section. */
395 struct mii_if_info mii_if;
396 int mii_preamble_required;
397 unsigned char phys[MII_CNT]; /* MII device addresses, only first one used. */
398 struct pci_dev *pci_dev;
402 /* The station address location in the EEPROM. */
403 #define EEPROM_SA_OFFSET 0x10
404 #define DEFAULT_INTR (IntrRxDMADone | IntrPCIErr | \
405 IntrDrvRqst | IntrTxDone | StatsMax | \
408 static int change_mtu(struct net_device *dev, int new_mtu);
409 static int eeprom_read(void __iomem *ioaddr, int location);
410 static int mdio_read(struct net_device *dev, int phy_id, int location);
411 static void mdio_write(struct net_device *dev, int phy_id, int location, int value);
412 static int netdev_open(struct net_device *dev);
413 static void check_duplex(struct net_device *dev);
414 static void netdev_timer(unsigned long data);
415 static void tx_timeout(struct net_device *dev);
416 static void init_ring(struct net_device *dev);
417 static int start_tx(struct sk_buff *skb, struct net_device *dev);
418 static int reset_tx (struct net_device *dev);
419 static irqreturn_t intr_handler(int irq, void *dev_instance);
420 static void rx_poll(unsigned long data);
421 static void tx_poll(unsigned long data);
422 static void refill_rx (struct net_device *dev);
423 static void netdev_error(struct net_device *dev, int intr_status);
424 static void netdev_error(struct net_device *dev, int intr_status);
425 static void set_rx_mode(struct net_device *dev);
426 static int __set_mac_addr(struct net_device *dev);
427 static struct net_device_stats *get_stats(struct net_device *dev);
428 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
429 static int netdev_close(struct net_device *dev);
430 static const struct ethtool_ops ethtool_ops;
432 static void sundance_reset(struct net_device *dev, unsigned long reset_cmd)
434 struct netdev_private *np = netdev_priv(dev);
435 void __iomem *ioaddr = np->base + ASICCtrl;
438 /* ST201 documentation states ASICCtrl is a 32bit register */
439 iowrite32 (reset_cmd | ioread32 (ioaddr), ioaddr);
440 /* ST201 documentation states reset can take up to 1 ms */
442 while (ioread32 (ioaddr) & (ResetBusy << 16)) {
443 if (--countdown == 0) {
444 printk(KERN_WARNING "%s : reset not completed !!\n", dev->name);
451 static int __devinit sundance_probe1 (struct pci_dev *pdev,
452 const struct pci_device_id *ent)
454 struct net_device *dev;
455 struct netdev_private *np;
457 int chip_idx = ent->driver_data;
460 void __iomem *ioaddr;
469 int phy, phy_idx = 0;
472 /* when built into the kernel, we only print version if device is found */
474 static int printed_version;
475 if (!printed_version++)
479 if (pci_enable_device(pdev))
481 pci_set_master(pdev);
485 dev = alloc_etherdev(sizeof(*np));
488 SET_MODULE_OWNER(dev);
489 SET_NETDEV_DEV(dev, &pdev->dev);
491 if (pci_request_regions(pdev, DRV_NAME))
494 ioaddr = pci_iomap(pdev, bar, netdev_io_size);
498 for (i = 0; i < 3; i++)
499 ((u16 *)dev->dev_addr)[i] =
500 le16_to_cpu(eeprom_read(ioaddr, i + EEPROM_SA_OFFSET));
501 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
503 dev->base_addr = (unsigned long)ioaddr;
506 np = netdev_priv(dev);
509 np->chip_id = chip_idx;
510 np->msg_enable = (1 << debug) - 1;
511 spin_lock_init(&np->lock);
512 tasklet_init(&np->rx_tasklet, rx_poll, (unsigned long)dev);
513 tasklet_init(&np->tx_tasklet, tx_poll, (unsigned long)dev);
515 ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma);
517 goto err_out_cleardev;
518 np->tx_ring = (struct netdev_desc *)ring_space;
519 np->tx_ring_dma = ring_dma;
521 ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma);
523 goto err_out_unmap_tx;
524 np->rx_ring = (struct netdev_desc *)ring_space;
525 np->rx_ring_dma = ring_dma;
527 np->mii_if.dev = dev;
528 np->mii_if.mdio_read = mdio_read;
529 np->mii_if.mdio_write = mdio_write;
530 np->mii_if.phy_id_mask = 0x1f;
531 np->mii_if.reg_num_mask = 0x1f;
533 /* The chip-specific entries in the device structure. */
534 dev->open = &netdev_open;
535 dev->hard_start_xmit = &start_tx;
536 dev->stop = &netdev_close;
537 dev->get_stats = &get_stats;
538 dev->set_multicast_list = &set_rx_mode;
539 dev->do_ioctl = &netdev_ioctl;
540 SET_ETHTOOL_OPS(dev, ðtool_ops);
541 dev->tx_timeout = &tx_timeout;
542 dev->watchdog_timeo = TX_TIMEOUT;
543 dev->change_mtu = &change_mtu;
544 pci_set_drvdata(pdev, dev);
546 i = register_netdev(dev);
548 goto err_out_unmap_rx;
550 printk(KERN_INFO "%s: %s at %p, ",
551 dev->name, pci_id_tbl[chip_idx].name, ioaddr);
552 for (i = 0; i < 5; i++)
553 printk("%2.2x:", dev->dev_addr[i]);
554 printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq);
556 np->phys[0] = 1; /* Default setting */
557 np->mii_preamble_required++;
559 * It seems some phys doesn't deal well with address 0 being accessed
560 * first, so leave address zero to the end of the loop (32 & 31).
562 for (phy = 1; phy <= 32 && phy_idx < MII_CNT; phy++) {
563 int phyx = phy & 0x1f;
564 int mii_status = mdio_read(dev, phyx, MII_BMSR);
565 if (mii_status != 0xffff && mii_status != 0x0000) {
566 np->phys[phy_idx++] = phyx;
567 np->mii_if.advertising = mdio_read(dev, phyx, MII_ADVERTISE);
568 if ((mii_status & 0x0040) == 0)
569 np->mii_preamble_required++;
570 printk(KERN_INFO "%s: MII PHY found at address %d, status "
571 "0x%4.4x advertising %4.4x.\n",
572 dev->name, phyx, mii_status, np->mii_if.advertising);
575 np->mii_preamble_required--;
578 printk(KERN_INFO "%s: No MII transceiver found, aborting. ASIC status %x\n",
579 dev->name, ioread32(ioaddr + ASICCtrl));
580 goto err_out_unregister;
583 np->mii_if.phy_id = np->phys[0];
585 /* Parse override configuration */
587 if (card_idx < MAX_UNITS) {
588 if (media[card_idx] != NULL) {
590 if (strcmp (media[card_idx], "100mbps_fd") == 0 ||
591 strcmp (media[card_idx], "4") == 0) {
593 np->mii_if.full_duplex = 1;
594 } else if (strcmp (media[card_idx], "100mbps_hd") == 0
595 || strcmp (media[card_idx], "3") == 0) {
597 np->mii_if.full_duplex = 0;
598 } else if (strcmp (media[card_idx], "10mbps_fd") == 0 ||
599 strcmp (media[card_idx], "2") == 0) {
601 np->mii_if.full_duplex = 1;
602 } else if (strcmp (media[card_idx], "10mbps_hd") == 0 ||
603 strcmp (media[card_idx], "1") == 0) {
605 np->mii_if.full_duplex = 0;
615 if (ioread32 (ioaddr + ASICCtrl) & 0x80) {
616 /* Default 100Mbps Full */
619 np->mii_if.full_duplex = 1;
624 mdio_write (dev, np->phys[0], MII_BMCR, BMCR_RESET);
626 /* If flow control enabled, we need to advertise it.*/
628 mdio_write (dev, np->phys[0], MII_ADVERTISE, np->mii_if.advertising | 0x0400);
629 mdio_write (dev, np->phys[0], MII_BMCR, BMCR_ANENABLE|BMCR_ANRESTART);
630 /* Force media type */
631 if (!np->an_enable) {
633 mii_ctl |= (np->speed == 100) ? BMCR_SPEED100 : 0;
634 mii_ctl |= (np->mii_if.full_duplex) ? BMCR_FULLDPLX : 0;
635 mdio_write (dev, np->phys[0], MII_BMCR, mii_ctl);
636 printk (KERN_INFO "Override speed=%d, %s duplex\n",
637 np->speed, np->mii_if.full_duplex ? "Full" : "Half");
641 /* Perhaps move the reset here? */
642 /* Reset the chip to erase previous misconfiguration. */
643 if (netif_msg_hw(np))
644 printk("ASIC Control is %x.\n", ioread32(ioaddr + ASICCtrl));
645 sundance_reset(dev, 0x00ff << 16);
646 if (netif_msg_hw(np))
647 printk("ASIC Control is now %x.\n", ioread32(ioaddr + ASICCtrl));
653 unregister_netdev(dev);
655 pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma);
657 pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma);
659 pci_set_drvdata(pdev, NULL);
660 pci_iounmap(pdev, ioaddr);
662 pci_release_regions(pdev);
668 static int change_mtu(struct net_device *dev, int new_mtu)
670 if ((new_mtu < 68) || (new_mtu > 8191)) /* Set by RxDMAFrameLen */
672 if (netif_running(dev))
678 #define eeprom_delay(ee_addr) ioread32(ee_addr)
679 /* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. */
680 static int __devinit eeprom_read(void __iomem *ioaddr, int location)
682 int boguscnt = 10000; /* Typical 1900 ticks. */
683 iowrite16(0x0200 | (location & 0xff), ioaddr + EECtrl);
685 eeprom_delay(ioaddr + EECtrl);
686 if (! (ioread16(ioaddr + EECtrl) & 0x8000)) {
687 return ioread16(ioaddr + EEData);
689 } while (--boguscnt > 0);
693 /* MII transceiver control section.
694 Read and write the MII registers using software-generated serial
695 MDIO protocol. See the MII specifications or DP83840A data sheet
698 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
699 met by back-to-back 33Mhz PCI cycles. */
700 #define mdio_delay() ioread8(mdio_addr)
703 MDIO_ShiftClk=0x0001, MDIO_Data=0x0002, MDIO_EnbOutput=0x0004,
705 #define MDIO_EnbIn (0)
706 #define MDIO_WRITE0 (MDIO_EnbOutput)
707 #define MDIO_WRITE1 (MDIO_Data | MDIO_EnbOutput)
709 /* Generate the preamble required for initial synchronization and
710 a few older transceivers. */
711 static void mdio_sync(void __iomem *mdio_addr)
715 /* Establish sync by sending at least 32 logic ones. */
716 while (--bits >= 0) {
717 iowrite8(MDIO_WRITE1, mdio_addr);
719 iowrite8(MDIO_WRITE1 | MDIO_ShiftClk, mdio_addr);
724 static int mdio_read(struct net_device *dev, int phy_id, int location)
726 struct netdev_private *np = netdev_priv(dev);
727 void __iomem *mdio_addr = np->base + MIICtrl;
728 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
731 if (np->mii_preamble_required)
732 mdio_sync(mdio_addr);
734 /* Shift the read command bits out. */
735 for (i = 15; i >= 0; i--) {
736 int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
738 iowrite8(dataval, mdio_addr);
740 iowrite8(dataval | MDIO_ShiftClk, mdio_addr);
743 /* Read the two transition, 16 data, and wire-idle bits. */
744 for (i = 19; i > 0; i--) {
745 iowrite8(MDIO_EnbIn, mdio_addr);
747 retval = (retval << 1) | ((ioread8(mdio_addr) & MDIO_Data) ? 1 : 0);
748 iowrite8(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr);
751 return (retval>>1) & 0xffff;
754 static void mdio_write(struct net_device *dev, int phy_id, int location, int value)
756 struct netdev_private *np = netdev_priv(dev);
757 void __iomem *mdio_addr = np->base + MIICtrl;
758 int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location<<18) | value;
761 if (np->mii_preamble_required)
762 mdio_sync(mdio_addr);
764 /* Shift the command bits out. */
765 for (i = 31; i >= 0; i--) {
766 int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
768 iowrite8(dataval, mdio_addr);
770 iowrite8(dataval | MDIO_ShiftClk, mdio_addr);
773 /* Clear out extra bits. */
774 for (i = 2; i > 0; i--) {
775 iowrite8(MDIO_EnbIn, mdio_addr);
777 iowrite8(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr);
783 static int netdev_open(struct net_device *dev)
785 struct netdev_private *np = netdev_priv(dev);
786 void __iomem *ioaddr = np->base;
790 /* Do we need to reset the chip??? */
792 i = request_irq(dev->irq, &intr_handler, IRQF_SHARED, dev->name, dev);
796 if (netif_msg_ifup(np))
797 printk(KERN_DEBUG "%s: netdev_open() irq %d.\n",
798 dev->name, dev->irq);
801 iowrite32(np->rx_ring_dma, ioaddr + RxListPtr);
802 /* The Tx list pointer is written as packets are queued. */
804 /* Initialize other registers. */
806 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
807 iowrite16(dev->mtu + 18, ioaddr + MaxFrameSize);
809 iowrite16(dev->mtu + 14, ioaddr + MaxFrameSize);
812 iowrite32(ioread32(ioaddr + ASICCtrl) | 0x0C, ioaddr + ASICCtrl);
814 /* Configure the PCI bus bursts and FIFO thresholds. */
816 if (dev->if_port == 0)
817 dev->if_port = np->default_port;
819 spin_lock_init(&np->mcastlock);
822 iowrite16(0, ioaddr + IntrEnable);
823 iowrite16(0, ioaddr + DownCounter);
824 /* Set the chip to poll every N*320nsec. */
825 iowrite8(100, ioaddr + RxDMAPollPeriod);
826 iowrite8(127, ioaddr + TxDMAPollPeriod);
827 /* Fix DFE-580TX packet drop issue */
828 if (np->pci_dev->revision >= 0x14)
829 iowrite8(0x01, ioaddr + DebugCtrl1);
830 netif_start_queue(dev);
832 spin_lock_irqsave(&np->lock, flags);
834 spin_unlock_irqrestore(&np->lock, flags);
836 iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1);
838 if (netif_msg_ifup(np))
839 printk(KERN_DEBUG "%s: Done netdev_open(), status: Rx %x Tx %x "
840 "MAC Control %x, %4.4x %4.4x.\n",
841 dev->name, ioread32(ioaddr + RxStatus), ioread8(ioaddr + TxStatus),
842 ioread32(ioaddr + MACCtrl0),
843 ioread16(ioaddr + MACCtrl1), ioread16(ioaddr + MACCtrl0));
845 /* Set the timer to check for link beat. */
846 init_timer(&np->timer);
847 np->timer.expires = jiffies + 3*HZ;
848 np->timer.data = (unsigned long)dev;
849 np->timer.function = &netdev_timer; /* timer handler */
850 add_timer(&np->timer);
852 /* Enable interrupts by setting the interrupt mask. */
853 iowrite16(DEFAULT_INTR, ioaddr + IntrEnable);
858 static void check_duplex(struct net_device *dev)
860 struct netdev_private *np = netdev_priv(dev);
861 void __iomem *ioaddr = np->base;
862 int mii_lpa = mdio_read(dev, np->phys[0], MII_LPA);
863 int negotiated = mii_lpa & np->mii_if.advertising;
867 if (!np->an_enable || mii_lpa == 0xffff) {
868 if (np->mii_if.full_duplex)
869 iowrite16 (ioread16 (ioaddr + MACCtrl0) | EnbFullDuplex,
874 /* Autonegotiation */
875 duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040;
876 if (np->mii_if.full_duplex != duplex) {
877 np->mii_if.full_duplex = duplex;
878 if (netif_msg_link(np))
879 printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d "
880 "negotiated capability %4.4x.\n", dev->name,
881 duplex ? "full" : "half", np->phys[0], negotiated);
882 iowrite16(ioread16(ioaddr + MACCtrl0) | duplex ? 0x20 : 0, ioaddr + MACCtrl0);
886 static void netdev_timer(unsigned long data)
888 struct net_device *dev = (struct net_device *)data;
889 struct netdev_private *np = netdev_priv(dev);
890 void __iomem *ioaddr = np->base;
891 int next_tick = 10*HZ;
893 if (netif_msg_timer(np)) {
894 printk(KERN_DEBUG "%s: Media selection timer tick, intr status %4.4x, "
896 dev->name, ioread16(ioaddr + IntrEnable),
897 ioread8(ioaddr + TxStatus), ioread32(ioaddr + RxStatus));
900 np->timer.expires = jiffies + next_tick;
901 add_timer(&np->timer);
904 static void tx_timeout(struct net_device *dev)
906 struct netdev_private *np = netdev_priv(dev);
907 void __iomem *ioaddr = np->base;
910 netif_stop_queue(dev);
911 tasklet_disable(&np->tx_tasklet);
912 iowrite16(0, ioaddr + IntrEnable);
913 printk(KERN_WARNING "%s: Transmit timed out, TxStatus %2.2x "
915 " resetting...\n", dev->name, ioread8(ioaddr + TxStatus),
916 ioread8(ioaddr + TxFrameId));
920 for (i=0; i<TX_RING_SIZE; i++) {
921 printk(KERN_DEBUG "%02x %08llx %08x %08x(%02x) %08x %08x\n", i,
922 (unsigned long long)(np->tx_ring_dma + i*sizeof(*np->tx_ring)),
923 le32_to_cpu(np->tx_ring[i].next_desc),
924 le32_to_cpu(np->tx_ring[i].status),
925 (le32_to_cpu(np->tx_ring[i].status) >> 2) & 0xff,
926 le32_to_cpu(np->tx_ring[i].frag[0].addr),
927 le32_to_cpu(np->tx_ring[i].frag[0].length));
929 printk(KERN_DEBUG "TxListPtr=%08x netif_queue_stopped=%d\n",
930 ioread32(np->base + TxListPtr),
931 netif_queue_stopped(dev));
932 printk(KERN_DEBUG "cur_tx=%d(%02x) dirty_tx=%d(%02x)\n",
933 np->cur_tx, np->cur_tx % TX_RING_SIZE,
934 np->dirty_tx, np->dirty_tx % TX_RING_SIZE);
935 printk(KERN_DEBUG "cur_rx=%d dirty_rx=%d\n", np->cur_rx, np->dirty_rx);
936 printk(KERN_DEBUG "cur_task=%d\n", np->cur_task);
938 spin_lock_irqsave(&np->lock, flag);
940 /* Stop and restart the chip's Tx processes . */
942 spin_unlock_irqrestore(&np->lock, flag);
946 dev->trans_start = jiffies;
947 np->stats.tx_errors++;
948 if (np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) {
949 netif_wake_queue(dev);
951 iowrite16(DEFAULT_INTR, ioaddr + IntrEnable);
952 tasklet_enable(&np->tx_tasklet);
956 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
957 static void init_ring(struct net_device *dev)
959 struct netdev_private *np = netdev_priv(dev);
962 np->cur_rx = np->cur_tx = 0;
963 np->dirty_rx = np->dirty_tx = 0;
966 np->rx_buf_sz = (dev->mtu <= 1520 ? PKT_BUF_SZ : dev->mtu + 16);
968 /* Initialize all Rx descriptors. */
969 for (i = 0; i < RX_RING_SIZE; i++) {
970 np->rx_ring[i].next_desc = cpu_to_le32(np->rx_ring_dma +
971 ((i+1)%RX_RING_SIZE)*sizeof(*np->rx_ring));
972 np->rx_ring[i].status = 0;
973 np->rx_ring[i].frag[0].length = 0;
974 np->rx_skbuff[i] = NULL;
977 /* Fill in the Rx buffers. Handle allocation failure gracefully. */
978 for (i = 0; i < RX_RING_SIZE; i++) {
979 struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz);
980 np->rx_skbuff[i] = skb;
983 skb->dev = dev; /* Mark as being used by this device. */
984 skb_reserve(skb, 2); /* 16 byte align the IP header. */
985 np->rx_ring[i].frag[0].addr = cpu_to_le32(
986 pci_map_single(np->pci_dev, skb->data, np->rx_buf_sz,
987 PCI_DMA_FROMDEVICE));
988 np->rx_ring[i].frag[0].length = cpu_to_le32(np->rx_buf_sz | LastFrag);
990 np->dirty_rx = (unsigned int)(i - RX_RING_SIZE);
992 for (i = 0; i < TX_RING_SIZE; i++) {
993 np->tx_skbuff[i] = NULL;
994 np->tx_ring[i].status = 0;
999 static void tx_poll (unsigned long data)
1001 struct net_device *dev = (struct net_device *)data;
1002 struct netdev_private *np = netdev_priv(dev);
1003 unsigned head = np->cur_task % TX_RING_SIZE;
1004 struct netdev_desc *txdesc =
1005 &np->tx_ring[(np->cur_tx - 1) % TX_RING_SIZE];
1007 /* Chain the next pointer */
1008 for (; np->cur_tx - np->cur_task > 0; np->cur_task++) {
1009 int entry = np->cur_task % TX_RING_SIZE;
1010 txdesc = &np->tx_ring[entry];
1012 np->last_tx->next_desc = cpu_to_le32(np->tx_ring_dma +
1013 entry*sizeof(struct netdev_desc));
1015 np->last_tx = txdesc;
1017 /* Indicate the latest descriptor of tx ring */
1018 txdesc->status |= cpu_to_le32(DescIntrOnTx);
1020 if (ioread32 (np->base + TxListPtr) == 0)
1021 iowrite32 (np->tx_ring_dma + head * sizeof(struct netdev_desc),
1022 np->base + TxListPtr);
1027 start_tx (struct sk_buff *skb, struct net_device *dev)
1029 struct netdev_private *np = netdev_priv(dev);
1030 struct netdev_desc *txdesc;
1033 /* Calculate the next Tx descriptor entry. */
1034 entry = np->cur_tx % TX_RING_SIZE;
1035 np->tx_skbuff[entry] = skb;
1036 txdesc = &np->tx_ring[entry];
1038 txdesc->next_desc = 0;
1039 txdesc->status = cpu_to_le32 ((entry << 2) | DisableAlign);
1040 txdesc->frag[0].addr = cpu_to_le32 (pci_map_single (np->pci_dev, skb->data,
1043 txdesc->frag[0].length = cpu_to_le32 (skb->len | LastFrag);
1045 /* Increment cur_tx before tasklet_schedule() */
1048 /* Schedule a tx_poll() task */
1049 tasklet_schedule(&np->tx_tasklet);
1051 /* On some architectures: explicitly flush cache lines here. */
1052 if (np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 1
1053 && !netif_queue_stopped(dev)) {
1056 netif_stop_queue (dev);
1058 dev->trans_start = jiffies;
1059 if (netif_msg_tx_queued(np)) {
1061 "%s: Transmit frame #%d queued in slot %d.\n",
1062 dev->name, np->cur_tx, entry);
1067 /* Reset hardware tx and free all of tx buffers */
1069 reset_tx (struct net_device *dev)
1071 struct netdev_private *np = netdev_priv(dev);
1072 void __iomem *ioaddr = np->base;
1073 struct sk_buff *skb;
1075 int irq = in_interrupt();
1077 /* Reset tx logic, TxListPtr will be cleaned */
1078 iowrite16 (TxDisable, ioaddr + MACCtrl1);
1079 sundance_reset(dev, (NetworkReset|FIFOReset|DMAReset|TxReset) << 16);
1081 /* free all tx skbuff */
1082 for (i = 0; i < TX_RING_SIZE; i++) {
1083 np->tx_ring[i].next_desc = 0;
1085 skb = np->tx_skbuff[i];
1087 pci_unmap_single(np->pci_dev,
1088 np->tx_ring[i].frag[0].addr, skb->len,
1091 dev_kfree_skb_irq (skb);
1093 dev_kfree_skb (skb);
1094 np->tx_skbuff[i] = NULL;
1095 np->stats.tx_dropped++;
1098 np->cur_tx = np->dirty_tx = 0;
1102 iowrite8(127, ioaddr + TxDMAPollPeriod);
1104 iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1);
1108 /* The interrupt handler cleans up after the Tx thread,
1109 and schedule a Rx thread work */
1110 static irqreturn_t intr_handler(int irq, void *dev_instance)
1112 struct net_device *dev = (struct net_device *)dev_instance;
1113 struct netdev_private *np = netdev_priv(dev);
1114 void __iomem *ioaddr = np->base;
1123 int intr_status = ioread16(ioaddr + IntrStatus);
1124 iowrite16(intr_status, ioaddr + IntrStatus);
1126 if (netif_msg_intr(np))
1127 printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n",
1128 dev->name, intr_status);
1130 if (!(intr_status & DEFAULT_INTR))
1135 if (intr_status & (IntrRxDMADone)) {
1136 iowrite16(DEFAULT_INTR & ~(IntrRxDone|IntrRxDMADone),
1137 ioaddr + IntrEnable);
1139 np->budget = RX_BUDGET;
1140 tasklet_schedule(&np->rx_tasklet);
1142 if (intr_status & (IntrTxDone | IntrDrvRqst)) {
1143 tx_status = ioread16 (ioaddr + TxStatus);
1144 for (tx_cnt=32; tx_status & 0x80; --tx_cnt) {
1145 if (netif_msg_tx_done(np))
1147 ("%s: Transmit status is %2.2x.\n",
1148 dev->name, tx_status);
1149 if (tx_status & 0x1e) {
1150 if (netif_msg_tx_err(np))
1151 printk("%s: Transmit error status %4.4x.\n",
1152 dev->name, tx_status);
1153 np->stats.tx_errors++;
1154 if (tx_status & 0x10)
1155 np->stats.tx_fifo_errors++;
1156 if (tx_status & 0x08)
1157 np->stats.collisions++;
1158 if (tx_status & 0x04)
1159 np->stats.tx_fifo_errors++;
1160 if (tx_status & 0x02)
1161 np->stats.tx_window_errors++;
1164 ** This reset has been verified on
1165 ** DFE-580TX boards ! phdm@macqel.be.
1167 if (tx_status & 0x10) { /* TxUnderrun */
1168 /* Restart Tx FIFO and transmitter */
1169 sundance_reset(dev, (NetworkReset|FIFOReset|TxReset) << 16);
1170 /* No need to reset the Tx pointer here */
1172 /* Restart the Tx. Need to make sure tx enabled */
1175 iowrite16(ioread16(ioaddr + MACCtrl1) | TxEnable, ioaddr + MACCtrl1);
1176 if (ioread16(ioaddr + MACCtrl1) & TxEnabled)
1181 /* Yup, this is a documentation bug. It cost me *hours*. */
1182 iowrite16 (0, ioaddr + TxStatus);
1184 iowrite32(5000, ioaddr + DownCounter);
1187 tx_status = ioread16 (ioaddr + TxStatus);
1189 hw_frame_id = (tx_status >> 8) & 0xff;
1191 hw_frame_id = ioread8(ioaddr + TxFrameId);
1194 if (np->pci_dev->revision >= 0x14) {
1195 spin_lock(&np->lock);
1196 for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) {
1197 int entry = np->dirty_tx % TX_RING_SIZE;
1198 struct sk_buff *skb;
1200 sw_frame_id = (le32_to_cpu(
1201 np->tx_ring[entry].status) >> 2) & 0xff;
1202 if (sw_frame_id == hw_frame_id &&
1203 !(le32_to_cpu(np->tx_ring[entry].status)
1206 if (sw_frame_id == (hw_frame_id + 1) %
1209 skb = np->tx_skbuff[entry];
1210 /* Free the original skb. */
1211 pci_unmap_single(np->pci_dev,
1212 np->tx_ring[entry].frag[0].addr,
1213 skb->len, PCI_DMA_TODEVICE);
1214 dev_kfree_skb_irq (np->tx_skbuff[entry]);
1215 np->tx_skbuff[entry] = NULL;
1216 np->tx_ring[entry].frag[0].addr = 0;
1217 np->tx_ring[entry].frag[0].length = 0;
1219 spin_unlock(&np->lock);
1221 spin_lock(&np->lock);
1222 for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) {
1223 int entry = np->dirty_tx % TX_RING_SIZE;
1224 struct sk_buff *skb;
1225 if (!(le32_to_cpu(np->tx_ring[entry].status)
1228 skb = np->tx_skbuff[entry];
1229 /* Free the original skb. */
1230 pci_unmap_single(np->pci_dev,
1231 np->tx_ring[entry].frag[0].addr,
1232 skb->len, PCI_DMA_TODEVICE);
1233 dev_kfree_skb_irq (np->tx_skbuff[entry]);
1234 np->tx_skbuff[entry] = NULL;
1235 np->tx_ring[entry].frag[0].addr = 0;
1236 np->tx_ring[entry].frag[0].length = 0;
1238 spin_unlock(&np->lock);
1241 if (netif_queue_stopped(dev) &&
1242 np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) {
1243 /* The ring is no longer full, clear busy flag. */
1244 netif_wake_queue (dev);
1246 /* Abnormal error summary/uncommon events handlers. */
1247 if (intr_status & (IntrPCIErr | LinkChange | StatsMax))
1248 netdev_error(dev, intr_status);
1250 if (netif_msg_intr(np))
1251 printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n",
1252 dev->name, ioread16(ioaddr + IntrStatus));
1253 return IRQ_RETVAL(handled);
1256 static void rx_poll(unsigned long data)
1258 struct net_device *dev = (struct net_device *)data;
1259 struct netdev_private *np = netdev_priv(dev);
1260 int entry = np->cur_rx % RX_RING_SIZE;
1261 int boguscnt = np->budget;
1262 void __iomem *ioaddr = np->base;
1265 /* If EOP is set on the next entry, it's a new packet. Send it up. */
1267 struct netdev_desc *desc = &(np->rx_ring[entry]);
1268 u32 frame_status = le32_to_cpu(desc->status);
1271 if (--boguscnt < 0) {
1274 if (!(frame_status & DescOwn))
1276 pkt_len = frame_status & 0x1fff; /* Chip omits the CRC. */
1277 if (netif_msg_rx_status(np))
1278 printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n",
1280 if (frame_status & 0x001f4000) {
1281 /* There was a error. */
1282 if (netif_msg_rx_err(np))
1283 printk(KERN_DEBUG " netdev_rx() Rx error was %8.8x.\n",
1285 np->stats.rx_errors++;
1286 if (frame_status & 0x00100000) np->stats.rx_length_errors++;
1287 if (frame_status & 0x00010000) np->stats.rx_fifo_errors++;
1288 if (frame_status & 0x00060000) np->stats.rx_frame_errors++;
1289 if (frame_status & 0x00080000) np->stats.rx_crc_errors++;
1290 if (frame_status & 0x00100000) {
1291 printk(KERN_WARNING "%s: Oversized Ethernet frame,"
1293 dev->name, frame_status);
1296 struct sk_buff *skb;
1297 #ifndef final_version
1298 if (netif_msg_rx_status(np))
1299 printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d"
1300 ", bogus_cnt %d.\n",
1303 /* Check if the packet is long enough to accept without copying
1304 to a minimally-sized skbuff. */
1305 if (pkt_len < rx_copybreak
1306 && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) {
1307 skb_reserve(skb, 2); /* 16 byte align the IP header */
1308 pci_dma_sync_single_for_cpu(np->pci_dev,
1311 PCI_DMA_FROMDEVICE);
1313 skb_copy_to_linear_data(skb, np->rx_skbuff[entry]->data, pkt_len);
1314 pci_dma_sync_single_for_device(np->pci_dev,
1317 PCI_DMA_FROMDEVICE);
1318 skb_put(skb, pkt_len);
1320 pci_unmap_single(np->pci_dev,
1323 PCI_DMA_FROMDEVICE);
1324 skb_put(skb = np->rx_skbuff[entry], pkt_len);
1325 np->rx_skbuff[entry] = NULL;
1327 skb->protocol = eth_type_trans(skb, dev);
1328 /* Note: checksum -> skb->ip_summed = CHECKSUM_UNNECESSARY; */
1330 dev->last_rx = jiffies;
1332 entry = (entry + 1) % RX_RING_SIZE;
1337 np->budget -= received;
1338 iowrite16(DEFAULT_INTR, ioaddr + IntrEnable);
1346 np->budget -= received;
1347 if (np->budget <= 0)
1348 np->budget = RX_BUDGET;
1349 tasklet_schedule(&np->rx_tasklet);
1353 static void refill_rx (struct net_device *dev)
1355 struct netdev_private *np = netdev_priv(dev);
1359 /* Refill the Rx ring buffers. */
1360 for (;(np->cur_rx - np->dirty_rx + RX_RING_SIZE) % RX_RING_SIZE > 0;
1361 np->dirty_rx = (np->dirty_rx + 1) % RX_RING_SIZE) {
1362 struct sk_buff *skb;
1363 entry = np->dirty_rx % RX_RING_SIZE;
1364 if (np->rx_skbuff[entry] == NULL) {
1365 skb = dev_alloc_skb(np->rx_buf_sz);
1366 np->rx_skbuff[entry] = skb;
1368 break; /* Better luck next round. */
1369 skb->dev = dev; /* Mark as being used by this device. */
1370 skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
1371 np->rx_ring[entry].frag[0].addr = cpu_to_le32(
1372 pci_map_single(np->pci_dev, skb->data,
1373 np->rx_buf_sz, PCI_DMA_FROMDEVICE));
1375 /* Perhaps we need not reset this field. */
1376 np->rx_ring[entry].frag[0].length =
1377 cpu_to_le32(np->rx_buf_sz | LastFrag);
1378 np->rx_ring[entry].status = 0;
1383 static void netdev_error(struct net_device *dev, int intr_status)
1385 struct netdev_private *np = netdev_priv(dev);
1386 void __iomem *ioaddr = np->base;
1387 u16 mii_ctl, mii_advertise, mii_lpa;
1390 if (intr_status & LinkChange) {
1391 if (np->an_enable) {
1392 mii_advertise = mdio_read (dev, np->phys[0], MII_ADVERTISE);
1393 mii_lpa= mdio_read (dev, np->phys[0], MII_LPA);
1394 mii_advertise &= mii_lpa;
1395 printk (KERN_INFO "%s: Link changed: ", dev->name);
1396 if (mii_advertise & ADVERTISE_100FULL) {
1398 printk ("100Mbps, full duplex\n");
1399 } else if (mii_advertise & ADVERTISE_100HALF) {
1401 printk ("100Mbps, half duplex\n");
1402 } else if (mii_advertise & ADVERTISE_10FULL) {
1404 printk ("10Mbps, full duplex\n");
1405 } else if (mii_advertise & ADVERTISE_10HALF) {
1407 printk ("10Mbps, half duplex\n");
1412 mii_ctl = mdio_read (dev, np->phys[0], MII_BMCR);
1413 speed = (mii_ctl & BMCR_SPEED100) ? 100 : 10;
1415 printk (KERN_INFO "%s: Link changed: %dMbps ,",
1417 printk ("%s duplex.\n", (mii_ctl & BMCR_FULLDPLX) ?
1421 if (np->flowctrl && np->mii_if.full_duplex) {
1422 iowrite16(ioread16(ioaddr + MulticastFilter1+2) | 0x0200,
1423 ioaddr + MulticastFilter1+2);
1424 iowrite16(ioread16(ioaddr + MACCtrl0) | EnbFlowCtrl,
1428 if (intr_status & StatsMax) {
1431 if (intr_status & IntrPCIErr) {
1432 printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n",
1433 dev->name, intr_status);
1434 /* We must do a global reset of DMA to continue. */
1438 static struct net_device_stats *get_stats(struct net_device *dev)
1440 struct netdev_private *np = netdev_priv(dev);
1441 void __iomem *ioaddr = np->base;
1444 /* We should lock this segment of code for SMP eventually, although
1445 the vulnerability window is very small and statistics are
1447 /* The chip only need report frame silently dropped. */
1448 np->stats.rx_missed_errors += ioread8(ioaddr + RxMissed);
1449 np->stats.tx_packets += ioread16(ioaddr + TxFramesOK);
1450 np->stats.rx_packets += ioread16(ioaddr + RxFramesOK);
1451 np->stats.collisions += ioread8(ioaddr + StatsLateColl);
1452 np->stats.collisions += ioread8(ioaddr + StatsMultiColl);
1453 np->stats.collisions += ioread8(ioaddr + StatsOneColl);
1454 np->stats.tx_carrier_errors += ioread8(ioaddr + StatsCarrierError);
1455 ioread8(ioaddr + StatsTxDefer);
1456 for (i = StatsTxDefer; i <= StatsMcastRx; i++)
1457 ioread8(ioaddr + i);
1458 np->stats.tx_bytes += ioread16(ioaddr + TxOctetsLow);
1459 np->stats.tx_bytes += ioread16(ioaddr + TxOctetsHigh) << 16;
1460 np->stats.rx_bytes += ioread16(ioaddr + RxOctetsLow);
1461 np->stats.rx_bytes += ioread16(ioaddr + RxOctetsHigh) << 16;
1466 static void set_rx_mode(struct net_device *dev)
1468 struct netdev_private *np = netdev_priv(dev);
1469 void __iomem *ioaddr = np->base;
1470 u16 mc_filter[4]; /* Multicast hash filter */
1474 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1475 memset(mc_filter, 0xff, sizeof(mc_filter));
1476 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptAll | AcceptMyPhys;
1477 } else if ((dev->mc_count > multicast_filter_limit)
1478 || (dev->flags & IFF_ALLMULTI)) {
1479 /* Too many to match, or accept all multicasts. */
1480 memset(mc_filter, 0xff, sizeof(mc_filter));
1481 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
1482 } else if (dev->mc_count) {
1483 struct dev_mc_list *mclist;
1487 memset (mc_filter, 0, sizeof (mc_filter));
1488 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
1489 i++, mclist = mclist->next) {
1490 crc = ether_crc_le (ETH_ALEN, mclist->dmi_addr);
1491 for (index=0, bit=0; bit < 6; bit++, crc <<= 1)
1492 if (crc & 0x80000000) index |= 1 << bit;
1493 mc_filter[index/16] |= (1 << (index % 16));
1495 rx_mode = AcceptBroadcast | AcceptMultiHash | AcceptMyPhys;
1497 iowrite8(AcceptBroadcast | AcceptMyPhys, ioaddr + RxMode);
1500 if (np->mii_if.full_duplex && np->flowctrl)
1501 mc_filter[3] |= 0x0200;
1503 for (i = 0; i < 4; i++)
1504 iowrite16(mc_filter[i], ioaddr + MulticastFilter0 + i*2);
1505 iowrite8(rx_mode, ioaddr + RxMode);
1508 static int __set_mac_addr(struct net_device *dev)
1510 struct netdev_private *np = netdev_priv(dev);
1513 addr16 = (dev->dev_addr[0] | (dev->dev_addr[1] << 8));
1514 iowrite16(addr16, np->base + StationAddr);
1515 addr16 = (dev->dev_addr[2] | (dev->dev_addr[3] << 8));
1516 iowrite16(addr16, np->base + StationAddr+2);
1517 addr16 = (dev->dev_addr[4] | (dev->dev_addr[5] << 8));
1518 iowrite16(addr16, np->base + StationAddr+4);
1522 static int check_if_running(struct net_device *dev)
1524 if (!netif_running(dev))
1529 static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1531 struct netdev_private *np = netdev_priv(dev);
1532 strcpy(info->driver, DRV_NAME);
1533 strcpy(info->version, DRV_VERSION);
1534 strcpy(info->bus_info, pci_name(np->pci_dev));
1537 static int get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1539 struct netdev_private *np = netdev_priv(dev);
1540 spin_lock_irq(&np->lock);
1541 mii_ethtool_gset(&np->mii_if, ecmd);
1542 spin_unlock_irq(&np->lock);
1546 static int set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1548 struct netdev_private *np = netdev_priv(dev);
1550 spin_lock_irq(&np->lock);
1551 res = mii_ethtool_sset(&np->mii_if, ecmd);
1552 spin_unlock_irq(&np->lock);
1556 static int nway_reset(struct net_device *dev)
1558 struct netdev_private *np = netdev_priv(dev);
1559 return mii_nway_restart(&np->mii_if);
1562 static u32 get_link(struct net_device *dev)
1564 struct netdev_private *np = netdev_priv(dev);
1565 return mii_link_ok(&np->mii_if);
1568 static u32 get_msglevel(struct net_device *dev)
1570 struct netdev_private *np = netdev_priv(dev);
1571 return np->msg_enable;
1574 static void set_msglevel(struct net_device *dev, u32 val)
1576 struct netdev_private *np = netdev_priv(dev);
1577 np->msg_enable = val;
1580 static const struct ethtool_ops ethtool_ops = {
1581 .begin = check_if_running,
1582 .get_drvinfo = get_drvinfo,
1583 .get_settings = get_settings,
1584 .set_settings = set_settings,
1585 .nway_reset = nway_reset,
1586 .get_link = get_link,
1587 .get_msglevel = get_msglevel,
1588 .set_msglevel = set_msglevel,
1589 .get_perm_addr = ethtool_op_get_perm_addr,
1592 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1594 struct netdev_private *np = netdev_priv(dev);
1595 void __iomem *ioaddr = np->base;
1599 if (!netif_running(dev))
1602 spin_lock_irq(&np->lock);
1603 rc = generic_mii_ioctl(&np->mii_if, if_mii(rq), cmd, NULL);
1604 spin_unlock_irq(&np->lock);
1606 case SIOCDEVPRIVATE:
1607 for (i=0; i<TX_RING_SIZE; i++) {
1608 printk(KERN_DEBUG "%02x %08llx %08x %08x(%02x) %08x %08x\n", i,
1609 (unsigned long long)(np->tx_ring_dma + i*sizeof(*np->tx_ring)),
1610 le32_to_cpu(np->tx_ring[i].next_desc),
1611 le32_to_cpu(np->tx_ring[i].status),
1612 (le32_to_cpu(np->tx_ring[i].status) >> 2)
1614 le32_to_cpu(np->tx_ring[i].frag[0].addr),
1615 le32_to_cpu(np->tx_ring[i].frag[0].length));
1617 printk(KERN_DEBUG "TxListPtr=%08x netif_queue_stopped=%d\n",
1618 ioread32(np->base + TxListPtr),
1619 netif_queue_stopped(dev));
1620 printk(KERN_DEBUG "cur_tx=%d(%02x) dirty_tx=%d(%02x)\n",
1621 np->cur_tx, np->cur_tx % TX_RING_SIZE,
1622 np->dirty_tx, np->dirty_tx % TX_RING_SIZE);
1623 printk(KERN_DEBUG "cur_rx=%d dirty_rx=%d\n", np->cur_rx, np->dirty_rx);
1624 printk(KERN_DEBUG "cur_task=%d\n", np->cur_task);
1625 printk(KERN_DEBUG "TxStatus=%04x\n", ioread16(ioaddr + TxStatus));
1633 static int netdev_close(struct net_device *dev)
1635 struct netdev_private *np = netdev_priv(dev);
1636 void __iomem *ioaddr = np->base;
1637 struct sk_buff *skb;
1640 /* Wait and kill tasklet */
1641 tasklet_kill(&np->rx_tasklet);
1642 tasklet_kill(&np->tx_tasklet);
1648 netif_stop_queue(dev);
1650 if (netif_msg_ifdown(np)) {
1651 printk(KERN_DEBUG "%s: Shutting down ethercard, status was Tx %2.2x "
1652 "Rx %4.4x Int %2.2x.\n",
1653 dev->name, ioread8(ioaddr + TxStatus),
1654 ioread32(ioaddr + RxStatus), ioread16(ioaddr + IntrStatus));
1655 printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n",
1656 dev->name, np->cur_tx, np->dirty_tx, np->cur_rx, np->dirty_rx);
1659 /* Disable interrupts by clearing the interrupt mask. */
1660 iowrite16(0x0000, ioaddr + IntrEnable);
1662 /* Disable Rx and Tx DMA for safely release resource */
1663 iowrite32(0x500, ioaddr + DMACtrl);
1665 /* Stop the chip's Tx and Rx processes. */
1666 iowrite16(TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl1);
1668 for (i = 2000; i > 0; i--) {
1669 if ((ioread32(ioaddr + DMACtrl) & 0xc000) == 0)
1674 iowrite16(GlobalReset | DMAReset | FIFOReset | NetworkReset,
1675 ioaddr +ASICCtrl + 2);
1677 for (i = 2000; i > 0; i--) {
1678 if ((ioread16(ioaddr + ASICCtrl +2) & ResetBusy) == 0)
1684 if (netif_msg_hw(np)) {
1685 printk("\n"KERN_DEBUG" Tx ring at %8.8x:\n",
1686 (int)(np->tx_ring_dma));
1687 for (i = 0; i < TX_RING_SIZE; i++)
1688 printk(" #%d desc. %4.4x %8.8x %8.8x.\n",
1689 i, np->tx_ring[i].status, np->tx_ring[i].frag[0].addr,
1690 np->tx_ring[i].frag[0].length);
1691 printk("\n"KERN_DEBUG " Rx ring %8.8x:\n",
1692 (int)(np->rx_ring_dma));
1693 for (i = 0; i < /*RX_RING_SIZE*/4 ; i++) {
1694 printk(KERN_DEBUG " #%d desc. %4.4x %4.4x %8.8x\n",
1695 i, np->rx_ring[i].status, np->rx_ring[i].frag[0].addr,
1696 np->rx_ring[i].frag[0].length);
1699 #endif /* __i386__ debugging only */
1701 free_irq(dev->irq, dev);
1703 del_timer_sync(&np->timer);
1705 /* Free all the skbuffs in the Rx queue. */
1706 for (i = 0; i < RX_RING_SIZE; i++) {
1707 np->rx_ring[i].status = 0;
1708 np->rx_ring[i].frag[0].addr = 0xBADF00D0; /* An invalid address. */
1709 skb = np->rx_skbuff[i];
1711 pci_unmap_single(np->pci_dev,
1712 np->rx_ring[i].frag[0].addr, np->rx_buf_sz,
1713 PCI_DMA_FROMDEVICE);
1715 np->rx_skbuff[i] = NULL;
1718 for (i = 0; i < TX_RING_SIZE; i++) {
1719 np->tx_ring[i].next_desc = 0;
1720 skb = np->tx_skbuff[i];
1722 pci_unmap_single(np->pci_dev,
1723 np->tx_ring[i].frag[0].addr, skb->len,
1726 np->tx_skbuff[i] = NULL;
1733 static void __devexit sundance_remove1 (struct pci_dev *pdev)
1735 struct net_device *dev = pci_get_drvdata(pdev);
1738 struct netdev_private *np = netdev_priv(dev);
1740 unregister_netdev(dev);
1741 pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring,
1743 pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring,
1745 pci_iounmap(pdev, np->base);
1746 pci_release_regions(pdev);
1748 pci_set_drvdata(pdev, NULL);
1752 static struct pci_driver sundance_driver = {
1754 .id_table = sundance_pci_tbl,
1755 .probe = sundance_probe1,
1756 .remove = __devexit_p(sundance_remove1),
1759 static int __init sundance_init(void)
1761 /* when a module, this is printed whether or not devices are found in probe */
1765 return pci_register_driver(&sundance_driver);
1768 static void __exit sundance_exit(void)
1770 pci_unregister_driver(&sundance_driver);
1773 module_init(sundance_init);
1774 module_exit(sundance_exit);