1 /* via-rhine.c: A Linux Ethernet device driver for VIA Rhine family chips. */
3 Written 1998-2001 by Donald Becker.
7 This software may be used and distributed according to the terms of
8 the GNU General Public License (GPL), incorporated herein by reference.
9 Drivers based on or derived from this code fall under the GPL and must
10 retain the authorship, copyright and license notice. This file is not
11 a complete program and may only be used when the entire operating
12 system is licensed under the GPL.
14 This driver is designed for the VIA VT86C100A Rhine-I.
15 It also works with the Rhine-II (6102) and Rhine-III (6105/6105L/6105LOM
16 and management NIC 6105M).
19 Scyld Computing Corporation
20 410 Severn Ave., Suite 210
24 This driver contains some changes from the original Donald Becker
25 version. He may or may not be interested in bug reports on this
26 code. You can find his versions at:
27 http://www.scyld.com/network/via-rhine.html
28 [link no longer provides useful info -jgarzik]
32 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
34 #define DRV_NAME "via-rhine"
35 #define DRV_VERSION "1.5.1"
36 #define DRV_RELDATE "2010-10-09"
38 #include <linux/types.h>
40 /* A few user-configurable values.
41 These may be modified when a driver module is loaded. */
43 #define RHINE_MSG_DEFAULT \
46 /* Set the copy breakpoint for the copy-only-tiny-frames scheme.
47 Setting to > 1518 effectively disables this feature. */
48 #if defined(__alpha__) || defined(__arm__) || defined(__hppa__) || \
49 defined(CONFIG_SPARC) || defined(__ia64__) || \
50 defined(__sh__) || defined(__mips__)
51 static int rx_copybreak = 1518;
53 static int rx_copybreak;
56 /* Work-around for broken BIOSes: they are unable to get the chip back out of
57 power state D3 so PXE booting fails. bootparam(7): via-rhine.avoid_D3=1 */
61 * In case you are looking for 'options[]' or 'full_duplex[]', they
62 * are gone. Use ethtool(8) instead.
65 /* Maximum number of multicast addresses to filter (vs. rx-all-multicast).
66 The Rhine has a 64 element 8390-like hash table. */
67 static const int multicast_filter_limit = 32;
70 /* Operational parameters that are set at compile time. */
72 /* Keep the ring sizes a power of two for compile efficiency.
73 The compiler will convert <unsigned>'%'<2^N> into a bit mask.
74 Making the Tx ring too large decreases the effectiveness of channel
75 bonding and packet priority.
76 There are no ill effects from too-large receive rings. */
77 #define TX_RING_SIZE 16
78 #define TX_QUEUE_LEN 10 /* Limit ring entries actually used. */
79 #define RX_RING_SIZE 64
81 /* Operational parameters that usually are not changed. */
83 /* Time in jiffies before concluding the transmitter is hung. */
84 #define TX_TIMEOUT (2*HZ)
86 #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/
88 #include <linux/module.h>
89 #include <linux/moduleparam.h>
90 #include <linux/kernel.h>
91 #include <linux/string.h>
92 #include <linux/timer.h>
93 #include <linux/errno.h>
94 #include <linux/ioport.h>
95 #include <linux/interrupt.h>
96 #include <linux/pci.h>
97 #include <linux/dma-mapping.h>
98 #include <linux/netdevice.h>
99 #include <linux/etherdevice.h>
100 #include <linux/skbuff.h>
101 #include <linux/init.h>
102 #include <linux/delay.h>
103 #include <linux/mii.h>
104 #include <linux/ethtool.h>
105 #include <linux/crc32.h>
106 #include <linux/if_vlan.h>
107 #include <linux/bitops.h>
108 #include <linux/workqueue.h>
109 #include <asm/processor.h> /* Processor type for cache alignment. */
112 #include <asm/uaccess.h>
113 #include <linux/dmi.h>
115 /* These identify the driver base version and may not be removed. */
116 static const char version[] =
117 "v1.10-LK" DRV_VERSION " " DRV_RELDATE " Written by Donald Becker";
119 /* This driver was written to use PCI memory space. Some early versions
120 of the Rhine may only work correctly with I/O space accesses. */
121 #ifdef CONFIG_VIA_RHINE_MMIO
127 MODULE_DESCRIPTION("VIA Rhine PCI Fast Ethernet driver");
128 MODULE_LICENSE("GPL");
130 module_param(debug, int, 0);
131 module_param(rx_copybreak, int, 0);
132 module_param(avoid_D3, bool, 0);
133 MODULE_PARM_DESC(debug, "VIA Rhine debug message flags");
134 MODULE_PARM_DESC(rx_copybreak, "VIA Rhine copy breakpoint for copy-only-tiny-frames");
135 MODULE_PARM_DESC(avoid_D3, "Avoid power state D3 (work-around for broken BIOSes)");
143 I. Board Compatibility
145 This driver is designed for the VIA 86c100A Rhine-II PCI Fast Ethernet
148 II. Board-specific settings
150 Boards with this chip are functional only in a bus-master PCI slot.
152 Many operational settings are loaded from the EEPROM to the Config word at
153 offset 0x78. For most of these settings, this driver assumes that they are
155 If this driver is compiled to use PCI memory space operations the EEPROM
156 must be configured to enable memory ops.
158 III. Driver operation
162 This driver uses two statically allocated fixed-size descriptor lists
163 formed into rings by a branch from the final descriptor to the beginning of
164 the list. The ring sizes are set at compile time by RX/TX_RING_SIZE.
166 IIIb/c. Transmit/Receive Structure
168 This driver attempts to use a zero-copy receive and transmit scheme.
170 Alas, all data buffers are required to start on a 32 bit boundary, so
171 the driver must often copy transmit packets into bounce buffers.
173 The driver allocates full frame size skbuffs for the Rx ring buffers at
174 open() time and passes the skb->data field to the chip as receive data
175 buffers. When an incoming frame is less than RX_COPYBREAK bytes long,
176 a fresh skbuff is allocated and the frame is copied to the new skbuff.
177 When the incoming frame is larger, the skbuff is passed directly up the
178 protocol stack. Buffers consumed this way are replaced by newly allocated
179 skbuffs in the last phase of rhine_rx().
181 The RX_COPYBREAK value is chosen to trade-off the memory wasted by
182 using a full-sized skbuff for small frames vs. the copying costs of larger
183 frames. New boards are typically used in generously configured machines
184 and the underfilled buffers have negligible impact compared to the benefit of
185 a single allocation size, so the default value of zero results in never
186 copying packets. When copying is done, the cost is usually mitigated by using
187 a combined copy/checksum routine. Copying also preloads the cache, which is
188 most useful with small frames.
190 Since the VIA chips are only able to transfer data to buffers on 32 bit
191 boundaries, the IP header at offset 14 in an ethernet frame isn't
192 longword aligned for further processing. Copying these unaligned buffers
193 has the beneficial effect of 16-byte aligning the IP header.
195 IIId. Synchronization
197 The driver runs as two independent, single-threaded flows of control. One
198 is the send-packet routine, which enforces single-threaded use by the
199 netdev_priv(dev)->lock spinlock. The other thread is the interrupt handler,
200 which is single threaded by the hardware and interrupt handling software.
202 The send packet thread has partial control over the Tx ring. It locks the
203 netdev_priv(dev)->lock whenever it's queuing a Tx packet. If the next slot in
204 the ring is not available it stops the transmit queue by
205 calling netif_stop_queue.
207 The interrupt handler has exclusive control over the Rx ring and records stats
208 from the Tx ring. After reaping the stats, it marks the Tx queue entry as
209 empty by incrementing the dirty_tx mark. If at least half of the entries in
210 the Rx ring are available the transmit queue is woken up if it was stopped.
216 Preliminary VT86C100A manual from http://www.via.com.tw/
217 http://www.scyld.com/expert/100mbps.html
218 http://www.scyld.com/expert/NWay.html
219 ftp://ftp.via.com.tw/public/lan/Products/NIC/VT86C100A/Datasheet/VT86C100A03.pdf
220 ftp://ftp.via.com.tw/public/lan/Products/NIC/VT6102/Datasheet/VT6102_021.PDF
225 The VT86C100A manual is not reliable information.
226 The 3043 chip does not handle unaligned transmit or receive buffers, resulting
227 in significant performance degradation for bounce buffer copies on transmit
228 and unaligned IP headers on receive.
229 The chip does not pad to minimum transmit length.
234 /* This table drives the PCI probe routines. It's mostly boilerplate in all
235 of the drivers, and will likely be provided by some future kernel.
236 Note the matching code -- the first table entry matchs all 56** cards but
237 second only the 1234 card.
244 VT8231 = 0x50, /* Integrated MAC */
245 VT8233 = 0x60, /* Integrated MAC */
246 VT8235 = 0x74, /* Integrated MAC */
247 VT8237 = 0x78, /* Integrated MAC */
254 VT6105M = 0x90, /* Management adapter */
258 rqWOL = 0x0001, /* Wake-On-LAN support */
259 rqForceReset = 0x0002,
260 rq6patterns = 0x0040, /* 6 instead of 4 patterns for WOL */
261 rqStatusWBRace = 0x0080, /* Tx Status Writeback Error possible */
262 rqRhineI = 0x0100, /* See comment below */
265 * rqRhineI: VT86C100A (aka Rhine-I) uses different bits to enable
266 * MMIO as well as for the collision counter and the Tx FIFO underflow
267 * indicator. In addition, Tx and Rx buffers need to 4 byte aligned.
270 /* Beware of PCI posted writes */
271 #define IOSYNC do { ioread8(ioaddr + StationAddr); } while (0)
273 static DEFINE_PCI_DEVICE_TABLE(rhine_pci_tbl) = {
274 { 0x1106, 0x3043, PCI_ANY_ID, PCI_ANY_ID, }, /* VT86C100A */
275 { 0x1106, 0x3065, PCI_ANY_ID, PCI_ANY_ID, }, /* VT6102 */
276 { 0x1106, 0x3106, PCI_ANY_ID, PCI_ANY_ID, }, /* 6105{,L,LOM} */
277 { 0x1106, 0x3053, PCI_ANY_ID, PCI_ANY_ID, }, /* VT6105M */
278 { } /* terminate list */
280 MODULE_DEVICE_TABLE(pci, rhine_pci_tbl);
283 /* Offsets to the device registers. */
284 enum register_offsets {
285 StationAddr=0x00, RxConfig=0x06, TxConfig=0x07, ChipCmd=0x08,
286 ChipCmd1=0x09, TQWake=0x0A,
287 IntrStatus=0x0C, IntrEnable=0x0E,
288 MulticastFilter0=0x10, MulticastFilter1=0x14,
289 RxRingPtr=0x18, TxRingPtr=0x1C, GFIFOTest=0x54,
290 MIIPhyAddr=0x6C, MIIStatus=0x6D, PCIBusConfig=0x6E, PCIBusConfig1=0x6F,
291 MIICmd=0x70, MIIRegAddr=0x71, MIIData=0x72, MACRegEEcsr=0x74,
292 ConfigA=0x78, ConfigB=0x79, ConfigC=0x7A, ConfigD=0x7B,
293 RxMissed=0x7C, RxCRCErrs=0x7E, MiscCmd=0x81,
294 StickyHW=0x83, IntrStatus2=0x84,
295 CamMask=0x88, CamCon=0x92, CamAddr=0x93,
296 WOLcrSet=0xA0, PwcfgSet=0xA1, WOLcgSet=0xA3, WOLcrClr=0xA4,
297 WOLcrClr1=0xA6, WOLcgClr=0xA7,
298 PwrcsrSet=0xA8, PwrcsrSet1=0xA9, PwrcsrClr=0xAC, PwrcsrClr1=0xAD,
301 /* Bits in ConfigD */
303 BackOptional=0x01, BackModify=0x02,
304 BackCaptureEffect=0x04, BackRandom=0x08
307 /* Bits in the TxConfig (TCR) register */
310 TCR_LB0=0x02, /* loopback[0] */
311 TCR_LB1=0x04, /* loopback[1] */
319 /* Bits in the CamCon (CAMC) register */
327 /* Bits in the PCIBusConfig1 (BCR1) register */
335 BCR1_TXQNOBK=0x40, /* for VT6105 */
336 BCR1_VIDFR=0x80, /* for VT6105 */
337 BCR1_MED0=0x40, /* for VT6102 */
338 BCR1_MED1=0x80, /* for VT6102 */
342 /* Registers we check that mmio and reg are the same. */
343 static const int mmio_verify_registers[] = {
344 RxConfig, TxConfig, IntrEnable, ConfigA, ConfigB, ConfigC, ConfigD,
349 /* Bits in the interrupt status/mask registers. */
350 enum intr_status_bits {
354 IntrTxError = 0x0008,
355 IntrRxEmpty = 0x0020,
357 IntrStatsMax = 0x0080,
358 IntrRxEarly = 0x0100,
359 IntrTxUnderrun = 0x0210,
360 IntrRxOverflow = 0x0400,
361 IntrRxDropped = 0x0800,
362 IntrRxNoBuf = 0x1000,
363 IntrTxAborted = 0x2000,
364 IntrLinkChange = 0x4000,
365 IntrRxWakeUp = 0x8000,
366 IntrTxDescRace = 0x080000, /* mapped from IntrStatus2 */
367 IntrNormalSummary = IntrRxDone | IntrTxDone,
368 IntrTxErrSummary = IntrTxDescRace | IntrTxAborted | IntrTxError |
372 /* Bits in WOLcrSet/WOLcrClr and PwrcsrSet/PwrcsrClr */
381 /* The Rx and Tx buffer descriptors. */
384 __le32 desc_length; /* Chain flag, Buffer/frame length */
390 __le32 desc_length; /* Chain flag, Tx Config, Frame length */
395 /* Initial value for tx_desc.desc_length, Buffer size goes to bits 0-10 */
396 #define TXDESC 0x00e08000
398 enum rx_status_bits {
399 RxOK=0x8000, RxWholePkt=0x0300, RxErr=0x008F
402 /* Bits in *_desc.*_status */
403 enum desc_status_bits {
407 /* Bits in *_desc.*_length */
408 enum desc_length_bits {
412 /* Bits in ChipCmd. */
414 CmdInit=0x01, CmdStart=0x02, CmdStop=0x04, CmdRxOn=0x08,
415 CmdTxOn=0x10, Cmd1TxDemand=0x20, CmdRxDemand=0x40,
416 Cmd1EarlyRx=0x01, Cmd1EarlyTx=0x02, Cmd1FDuplex=0x04,
417 Cmd1NoTxPoll=0x08, Cmd1Reset=0x80,
423 struct u64_stats_sync syncp;
426 struct rhine_private {
427 /* Bit mask for configured VLAN ids */
428 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
430 /* Descriptor rings */
431 struct rx_desc *rx_ring;
432 struct tx_desc *tx_ring;
433 dma_addr_t rx_ring_dma;
434 dma_addr_t tx_ring_dma;
436 /* The addresses of receive-in-place skbuffs. */
437 struct sk_buff *rx_skbuff[RX_RING_SIZE];
438 dma_addr_t rx_skbuff_dma[RX_RING_SIZE];
440 /* The saved address of a sent-in-place packet/buffer, for later free(). */
441 struct sk_buff *tx_skbuff[TX_RING_SIZE];
442 dma_addr_t tx_skbuff_dma[TX_RING_SIZE];
444 /* Tx bounce buffers (Rhine-I only) */
445 unsigned char *tx_buf[TX_RING_SIZE];
446 unsigned char *tx_bufs;
447 dma_addr_t tx_bufs_dma;
449 struct pci_dev *pdev;
451 struct net_device *dev;
452 struct napi_struct napi;
454 struct mutex task_lock;
456 struct work_struct slow_event_task;
457 struct work_struct reset_task;
461 /* Frequently used values: keep some adjacent for cache effect. */
463 struct rx_desc *rx_head_desc;
464 unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */
465 unsigned int cur_tx, dirty_tx;
466 unsigned int rx_buf_sz; /* Based on MTU+slack. */
467 struct rhine_stats rx_stats;
468 struct rhine_stats tx_stats;
471 u8 tx_thresh, rx_thresh;
473 struct mii_if_info mii_if;
477 #define BYTE_REG_BITS_ON(x, p) do { iowrite8((ioread8((p))|(x)), (p)); } while (0)
478 #define WORD_REG_BITS_ON(x, p) do { iowrite16((ioread16((p))|(x)), (p)); } while (0)
479 #define DWORD_REG_BITS_ON(x, p) do { iowrite32((ioread32((p))|(x)), (p)); } while (0)
481 #define BYTE_REG_BITS_IS_ON(x, p) (ioread8((p)) & (x))
482 #define WORD_REG_BITS_IS_ON(x, p) (ioread16((p)) & (x))
483 #define DWORD_REG_BITS_IS_ON(x, p) (ioread32((p)) & (x))
485 #define BYTE_REG_BITS_OFF(x, p) do { iowrite8(ioread8((p)) & (~(x)), (p)); } while (0)
486 #define WORD_REG_BITS_OFF(x, p) do { iowrite16(ioread16((p)) & (~(x)), (p)); } while (0)
487 #define DWORD_REG_BITS_OFF(x, p) do { iowrite32(ioread32((p)) & (~(x)), (p)); } while (0)
489 #define BYTE_REG_BITS_SET(x, m, p) do { iowrite8((ioread8((p)) & (~(m)))|(x), (p)); } while (0)
490 #define WORD_REG_BITS_SET(x, m, p) do { iowrite16((ioread16((p)) & (~(m)))|(x), (p)); } while (0)
491 #define DWORD_REG_BITS_SET(x, m, p) do { iowrite32((ioread32((p)) & (~(m)))|(x), (p)); } while (0)
494 static int mdio_read(struct net_device *dev, int phy_id, int location);
495 static void mdio_write(struct net_device *dev, int phy_id, int location, int value);
496 static int rhine_open(struct net_device *dev);
497 static void rhine_reset_task(struct work_struct *work);
498 static void rhine_slow_event_task(struct work_struct *work);
499 static void rhine_tx_timeout(struct net_device *dev);
500 static netdev_tx_t rhine_start_tx(struct sk_buff *skb,
501 struct net_device *dev);
502 static irqreturn_t rhine_interrupt(int irq, void *dev_instance);
503 static void rhine_tx(struct net_device *dev);
504 static int rhine_rx(struct net_device *dev, int limit);
505 static void rhine_set_rx_mode(struct net_device *dev);
506 static struct rtnl_link_stats64 *rhine_get_stats64(struct net_device *dev,
507 struct rtnl_link_stats64 *stats);
508 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
509 static const struct ethtool_ops netdev_ethtool_ops;
510 static int rhine_close(struct net_device *dev);
511 static int rhine_vlan_rx_add_vid(struct net_device *dev,
512 __be16 proto, u16 vid);
513 static int rhine_vlan_rx_kill_vid(struct net_device *dev,
514 __be16 proto, u16 vid);
515 static void rhine_restart_tx(struct net_device *dev);
517 static void rhine_wait_bit(struct rhine_private *rp, u8 reg, u8 mask, bool low)
519 void __iomem *ioaddr = rp->base;
522 for (i = 0; i < 1024; i++) {
523 bool has_mask_bits = !!(ioread8(ioaddr + reg) & mask);
525 if (low ^ has_mask_bits)
530 netif_dbg(rp, hw, rp->dev, "%s bit wait (%02x/%02x) cycle "
531 "count: %04d\n", low ? "low" : "high", reg, mask, i);
535 static void rhine_wait_bit_high(struct rhine_private *rp, u8 reg, u8 mask)
537 rhine_wait_bit(rp, reg, mask, false);
540 static void rhine_wait_bit_low(struct rhine_private *rp, u8 reg, u8 mask)
542 rhine_wait_bit(rp, reg, mask, true);
545 static u32 rhine_get_events(struct rhine_private *rp)
547 void __iomem *ioaddr = rp->base;
550 intr_status = ioread16(ioaddr + IntrStatus);
551 /* On Rhine-II, Bit 3 indicates Tx descriptor write-back race. */
552 if (rp->quirks & rqStatusWBRace)
553 intr_status |= ioread8(ioaddr + IntrStatus2) << 16;
557 static void rhine_ack_events(struct rhine_private *rp, u32 mask)
559 void __iomem *ioaddr = rp->base;
561 if (rp->quirks & rqStatusWBRace)
562 iowrite8(mask >> 16, ioaddr + IntrStatus2);
563 iowrite16(mask, ioaddr + IntrStatus);
568 * Get power related registers into sane state.
569 * Notify user about past WOL event.
571 static void rhine_power_init(struct net_device *dev)
573 struct rhine_private *rp = netdev_priv(dev);
574 void __iomem *ioaddr = rp->base;
577 if (rp->quirks & rqWOL) {
578 /* Make sure chip is in power state D0 */
579 iowrite8(ioread8(ioaddr + StickyHW) & 0xFC, ioaddr + StickyHW);
581 /* Disable "force PME-enable" */
582 iowrite8(0x80, ioaddr + WOLcgClr);
584 /* Clear power-event config bits (WOL) */
585 iowrite8(0xFF, ioaddr + WOLcrClr);
586 /* More recent cards can manage two additional patterns */
587 if (rp->quirks & rq6patterns)
588 iowrite8(0x03, ioaddr + WOLcrClr1);
590 /* Save power-event status bits */
591 wolstat = ioread8(ioaddr + PwrcsrSet);
592 if (rp->quirks & rq6patterns)
593 wolstat |= (ioread8(ioaddr + PwrcsrSet1) & 0x03) << 8;
595 /* Clear power-event status bits */
596 iowrite8(0xFF, ioaddr + PwrcsrClr);
597 if (rp->quirks & rq6patterns)
598 iowrite8(0x03, ioaddr + PwrcsrClr1);
604 reason = "Magic packet";
607 reason = "Link went up";
610 reason = "Link went down";
613 reason = "Unicast packet";
616 reason = "Multicast/broadcast packet";
621 netdev_info(dev, "Woke system up. Reason: %s\n",
627 static void rhine_chip_reset(struct net_device *dev)
629 struct rhine_private *rp = netdev_priv(dev);
630 void __iomem *ioaddr = rp->base;
633 iowrite8(Cmd1Reset, ioaddr + ChipCmd1);
636 if (ioread8(ioaddr + ChipCmd1) & Cmd1Reset) {
637 netdev_info(dev, "Reset not complete yet. Trying harder.\n");
640 if (rp->quirks & rqForceReset)
641 iowrite8(0x40, ioaddr + MiscCmd);
643 /* Reset can take somewhat longer (rare) */
644 rhine_wait_bit_low(rp, ChipCmd1, Cmd1Reset);
647 cmd1 = ioread8(ioaddr + ChipCmd1);
648 netif_info(rp, hw, dev, "Reset %s\n", (cmd1 & Cmd1Reset) ?
649 "failed" : "succeeded");
653 static void enable_mmio(long pioaddr, u32 quirks)
656 if (quirks & rqRhineI) {
657 /* More recent docs say that this bit is reserved ... */
658 n = inb(pioaddr + ConfigA) | 0x20;
659 outb(n, pioaddr + ConfigA);
661 n = inb(pioaddr + ConfigD) | 0x80;
662 outb(n, pioaddr + ConfigD);
668 * Loads bytes 0x00-0x05, 0x6E-0x6F, 0x78-0x7B from EEPROM
669 * (plus 0x6C for Rhine-I/II)
671 static void rhine_reload_eeprom(long pioaddr, struct net_device *dev)
673 struct rhine_private *rp = netdev_priv(dev);
674 void __iomem *ioaddr = rp->base;
677 outb(0x20, pioaddr + MACRegEEcsr);
678 for (i = 0; i < 1024; i++) {
679 if (!(inb(pioaddr + MACRegEEcsr) & 0x20))
683 pr_info("%4d cycles used @ %s:%d\n", i, __func__, __LINE__);
687 * Reloading from EEPROM overwrites ConfigA-D, so we must re-enable
688 * MMIO. If reloading EEPROM was done first this could be avoided, but
689 * it is not known if that still works with the "win98-reboot" problem.
691 enable_mmio(pioaddr, rp->quirks);
694 /* Turn off EEPROM-controlled wake-up (magic packet) */
695 if (rp->quirks & rqWOL)
696 iowrite8(ioread8(ioaddr + ConfigA) & 0xFC, ioaddr + ConfigA);
700 #ifdef CONFIG_NET_POLL_CONTROLLER
701 static void rhine_poll(struct net_device *dev)
703 struct rhine_private *rp = netdev_priv(dev);
704 const int irq = rp->pdev->irq;
707 rhine_interrupt(irq, dev);
712 static void rhine_kick_tx_threshold(struct rhine_private *rp)
714 if (rp->tx_thresh < 0xe0) {
715 void __iomem *ioaddr = rp->base;
717 rp->tx_thresh += 0x20;
718 BYTE_REG_BITS_SET(rp->tx_thresh, 0x80, ioaddr + TxConfig);
722 static void rhine_tx_err(struct rhine_private *rp, u32 status)
724 struct net_device *dev = rp->dev;
726 if (status & IntrTxAborted) {
727 netif_info(rp, tx_err, dev,
728 "Abort %08x, frame dropped\n", status);
731 if (status & IntrTxUnderrun) {
732 rhine_kick_tx_threshold(rp);
733 netif_info(rp, tx_err ,dev, "Transmitter underrun, "
734 "Tx threshold now %02x\n", rp->tx_thresh);
737 if (status & IntrTxDescRace)
738 netif_info(rp, tx_err, dev, "Tx descriptor write-back race\n");
740 if ((status & IntrTxError) &&
741 (status & (IntrTxAborted | IntrTxUnderrun | IntrTxDescRace)) == 0) {
742 rhine_kick_tx_threshold(rp);
743 netif_info(rp, tx_err, dev, "Unspecified error. "
744 "Tx threshold now %02x\n", rp->tx_thresh);
747 rhine_restart_tx(dev);
750 static void rhine_update_rx_crc_and_missed_errord(struct rhine_private *rp)
752 void __iomem *ioaddr = rp->base;
753 struct net_device_stats *stats = &rp->dev->stats;
755 stats->rx_crc_errors += ioread16(ioaddr + RxCRCErrs);
756 stats->rx_missed_errors += ioread16(ioaddr + RxMissed);
759 * Clears the "tally counters" for CRC errors and missed frames(?).
760 * It has been reported that some chips need a write of 0 to clear
761 * these, for others the counters are set to 1 when written to and
762 * instead cleared when read. So we clear them both ways ...
764 iowrite32(0, ioaddr + RxMissed);
765 ioread16(ioaddr + RxCRCErrs);
766 ioread16(ioaddr + RxMissed);
769 #define RHINE_EVENT_NAPI_RX (IntrRxDone | \
777 #define RHINE_EVENT_NAPI_TX_ERR (IntrTxError | \
781 #define RHINE_EVENT_NAPI_TX (IntrTxDone | RHINE_EVENT_NAPI_TX_ERR)
783 #define RHINE_EVENT_NAPI (RHINE_EVENT_NAPI_RX | \
784 RHINE_EVENT_NAPI_TX | \
786 #define RHINE_EVENT_SLOW (IntrPCIErr | IntrLinkChange)
787 #define RHINE_EVENT (RHINE_EVENT_NAPI | RHINE_EVENT_SLOW)
789 static int rhine_napipoll(struct napi_struct *napi, int budget)
791 struct rhine_private *rp = container_of(napi, struct rhine_private, napi);
792 struct net_device *dev = rp->dev;
793 void __iomem *ioaddr = rp->base;
794 u16 enable_mask = RHINE_EVENT & 0xffff;
798 status = rhine_get_events(rp);
799 rhine_ack_events(rp, status & ~RHINE_EVENT_SLOW);
801 if (status & RHINE_EVENT_NAPI_RX)
802 work_done += rhine_rx(dev, budget);
804 if (status & RHINE_EVENT_NAPI_TX) {
805 if (status & RHINE_EVENT_NAPI_TX_ERR) {
806 /* Avoid scavenging before Tx engine turned off */
807 rhine_wait_bit_low(rp, ChipCmd, CmdTxOn);
808 if (ioread8(ioaddr + ChipCmd) & CmdTxOn)
809 netif_warn(rp, tx_err, dev, "Tx still on\n");
814 if (status & RHINE_EVENT_NAPI_TX_ERR)
815 rhine_tx_err(rp, status);
818 if (status & IntrStatsMax) {
819 spin_lock(&rp->lock);
820 rhine_update_rx_crc_and_missed_errord(rp);
821 spin_unlock(&rp->lock);
824 if (status & RHINE_EVENT_SLOW) {
825 enable_mask &= ~RHINE_EVENT_SLOW;
826 schedule_work(&rp->slow_event_task);
829 if (work_done < budget) {
831 iowrite16(enable_mask, ioaddr + IntrEnable);
837 static void rhine_hw_init(struct net_device *dev, long pioaddr)
839 struct rhine_private *rp = netdev_priv(dev);
841 /* Reset the chip to erase previous misconfiguration. */
842 rhine_chip_reset(dev);
844 /* Rhine-I needs extra time to recuperate before EEPROM reload */
845 if (rp->quirks & rqRhineI)
848 /* Reload EEPROM controlled bytes cleared by soft reset */
849 rhine_reload_eeprom(pioaddr, dev);
852 static const struct net_device_ops rhine_netdev_ops = {
853 .ndo_open = rhine_open,
854 .ndo_stop = rhine_close,
855 .ndo_start_xmit = rhine_start_tx,
856 .ndo_get_stats64 = rhine_get_stats64,
857 .ndo_set_rx_mode = rhine_set_rx_mode,
858 .ndo_change_mtu = eth_change_mtu,
859 .ndo_validate_addr = eth_validate_addr,
860 .ndo_set_mac_address = eth_mac_addr,
861 .ndo_do_ioctl = netdev_ioctl,
862 .ndo_tx_timeout = rhine_tx_timeout,
863 .ndo_vlan_rx_add_vid = rhine_vlan_rx_add_vid,
864 .ndo_vlan_rx_kill_vid = rhine_vlan_rx_kill_vid,
865 #ifdef CONFIG_NET_POLL_CONTROLLER
866 .ndo_poll_controller = rhine_poll,
870 static int rhine_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
872 struct net_device *dev;
873 struct rhine_private *rp;
878 void __iomem *ioaddr;
887 /* when built into the kernel, we only print version if device is found */
889 pr_info_once("%s\n", version);
896 if (pdev->revision < VTunknown0) {
900 else if (pdev->revision >= VT6102) {
901 quirks = rqWOL | rqForceReset;
902 if (pdev->revision < VT6105) {
904 quirks |= rqStatusWBRace; /* Rhine-II exclusive */
907 phy_id = 1; /* Integrated PHY, phy_id fixed to 1 */
908 if (pdev->revision >= VT6105_B0)
909 quirks |= rq6patterns;
910 if (pdev->revision < VT6105M)
913 name = "Rhine III (Management Adapter)";
917 rc = pci_enable_device(pdev);
921 /* this should always be supported */
922 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
925 "32-bit PCI DMA addresses not supported by the card!?\n");
926 goto err_out_pci_disable;
930 if ((pci_resource_len(pdev, 0) < io_size) ||
931 (pci_resource_len(pdev, 1) < io_size)) {
933 dev_err(&pdev->dev, "Insufficient PCI resources, aborting\n");
934 goto err_out_pci_disable;
937 pioaddr = pci_resource_start(pdev, 0);
938 memaddr = pci_resource_start(pdev, 1);
940 pci_set_master(pdev);
942 dev = alloc_etherdev(sizeof(struct rhine_private));
945 goto err_out_pci_disable;
947 SET_NETDEV_DEV(dev, &pdev->dev);
949 rp = netdev_priv(dev);
952 rp->pioaddr = pioaddr;
954 rp->msg_enable = netif_msg_init(debug, RHINE_MSG_DEFAULT);
956 rc = pci_request_regions(pdev, DRV_NAME);
958 goto err_out_free_netdev;
960 ioaddr = pci_iomap(pdev, bar, io_size);
964 "ioremap failed for device %s, region 0x%X @ 0x%lX\n",
965 pci_name(pdev), io_size, memaddr);
966 goto err_out_free_res;
970 enable_mmio(pioaddr, quirks);
972 /* Check that selected MMIO registers match the PIO ones */
974 while (mmio_verify_registers[i]) {
975 int reg = mmio_verify_registers[i++];
976 unsigned char a = inb(pioaddr+reg);
977 unsigned char b = readb(ioaddr+reg);
981 "MMIO do not match PIO [%02x] (%02x != %02x)\n",
986 #endif /* USE_MMIO */
990 u64_stats_init(&rp->tx_stats.syncp);
991 u64_stats_init(&rp->rx_stats.syncp);
993 /* Get chip registers into a sane state */
994 rhine_power_init(dev);
995 rhine_hw_init(dev, pioaddr);
997 for (i = 0; i < 6; i++)
998 dev->dev_addr[i] = ioread8(ioaddr + StationAddr + i);
1000 if (!is_valid_ether_addr(dev->dev_addr)) {
1001 /* Report it and use a random ethernet address instead */
1002 netdev_err(dev, "Invalid MAC address: %pM\n", dev->dev_addr);
1003 eth_hw_addr_random(dev);
1004 netdev_info(dev, "Using random MAC address: %pM\n",
1008 /* For Rhine-I/II, phy_id is loaded from EEPROM */
1010 phy_id = ioread8(ioaddr + 0x6C);
1012 spin_lock_init(&rp->lock);
1013 mutex_init(&rp->task_lock);
1014 INIT_WORK(&rp->reset_task, rhine_reset_task);
1015 INIT_WORK(&rp->slow_event_task, rhine_slow_event_task);
1017 rp->mii_if.dev = dev;
1018 rp->mii_if.mdio_read = mdio_read;
1019 rp->mii_if.mdio_write = mdio_write;
1020 rp->mii_if.phy_id_mask = 0x1f;
1021 rp->mii_if.reg_num_mask = 0x1f;
1023 /* The chip-specific entries in the device structure. */
1024 dev->netdev_ops = &rhine_netdev_ops;
1025 dev->ethtool_ops = &netdev_ethtool_ops;
1026 dev->watchdog_timeo = TX_TIMEOUT;
1028 netif_napi_add(dev, &rp->napi, rhine_napipoll, 64);
1030 if (rp->quirks & rqRhineI)
1031 dev->features |= NETIF_F_SG|NETIF_F_HW_CSUM;
1033 if (pdev->revision >= VT6105M)
1034 dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
1035 NETIF_F_HW_VLAN_CTAG_RX |
1036 NETIF_F_HW_VLAN_CTAG_FILTER;
1038 /* dev->name not defined before register_netdev()! */
1039 rc = register_netdev(dev);
1043 netdev_info(dev, "VIA %s at 0x%lx, %pM, IRQ %d\n",
1050 dev->dev_addr, pdev->irq);
1052 pci_set_drvdata(pdev, dev);
1056 int mii_status = mdio_read(dev, phy_id, 1);
1057 mii_cmd = mdio_read(dev, phy_id, MII_BMCR) & ~BMCR_ISOLATE;
1058 mdio_write(dev, phy_id, MII_BMCR, mii_cmd);
1059 if (mii_status != 0xffff && mii_status != 0x0000) {
1060 rp->mii_if.advertising = mdio_read(dev, phy_id, 4);
1062 "MII PHY found at address %d, status 0x%04x advertising %04x Link %04x\n",
1064 mii_status, rp->mii_if.advertising,
1065 mdio_read(dev, phy_id, 5));
1067 /* set IFF_RUNNING */
1068 if (mii_status & BMSR_LSTATUS)
1069 netif_carrier_on(dev);
1071 netif_carrier_off(dev);
1075 rp->mii_if.phy_id = phy_id;
1077 netif_info(rp, probe, dev, "No D3 power state at shutdown\n");
1082 pci_iounmap(pdev, ioaddr);
1084 pci_release_regions(pdev);
1085 err_out_free_netdev:
1087 err_out_pci_disable:
1088 pci_disable_device(pdev);
1093 static int alloc_ring(struct net_device* dev)
1095 struct rhine_private *rp = netdev_priv(dev);
1097 dma_addr_t ring_dma;
1099 ring = pci_alloc_consistent(rp->pdev,
1100 RX_RING_SIZE * sizeof(struct rx_desc) +
1101 TX_RING_SIZE * sizeof(struct tx_desc),
1104 netdev_err(dev, "Could not allocate DMA memory\n");
1107 if (rp->quirks & rqRhineI) {
1108 rp->tx_bufs = pci_alloc_consistent(rp->pdev,
1109 PKT_BUF_SZ * TX_RING_SIZE,
1111 if (rp->tx_bufs == NULL) {
1112 pci_free_consistent(rp->pdev,
1113 RX_RING_SIZE * sizeof(struct rx_desc) +
1114 TX_RING_SIZE * sizeof(struct tx_desc),
1121 rp->tx_ring = ring + RX_RING_SIZE * sizeof(struct rx_desc);
1122 rp->rx_ring_dma = ring_dma;
1123 rp->tx_ring_dma = ring_dma + RX_RING_SIZE * sizeof(struct rx_desc);
1128 static void free_ring(struct net_device* dev)
1130 struct rhine_private *rp = netdev_priv(dev);
1132 pci_free_consistent(rp->pdev,
1133 RX_RING_SIZE * sizeof(struct rx_desc) +
1134 TX_RING_SIZE * sizeof(struct tx_desc),
1135 rp->rx_ring, rp->rx_ring_dma);
1139 pci_free_consistent(rp->pdev, PKT_BUF_SZ * TX_RING_SIZE,
1140 rp->tx_bufs, rp->tx_bufs_dma);
1146 static void alloc_rbufs(struct net_device *dev)
1148 struct rhine_private *rp = netdev_priv(dev);
1152 rp->dirty_rx = rp->cur_rx = 0;
1154 rp->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
1155 rp->rx_head_desc = &rp->rx_ring[0];
1156 next = rp->rx_ring_dma;
1158 /* Init the ring entries */
1159 for (i = 0; i < RX_RING_SIZE; i++) {
1160 rp->rx_ring[i].rx_status = 0;
1161 rp->rx_ring[i].desc_length = cpu_to_le32(rp->rx_buf_sz);
1162 next += sizeof(struct rx_desc);
1163 rp->rx_ring[i].next_desc = cpu_to_le32(next);
1164 rp->rx_skbuff[i] = NULL;
1166 /* Mark the last entry as wrapping the ring. */
1167 rp->rx_ring[i-1].next_desc = cpu_to_le32(rp->rx_ring_dma);
1169 /* Fill in the Rx buffers. Handle allocation failure gracefully. */
1170 for (i = 0; i < RX_RING_SIZE; i++) {
1171 struct sk_buff *skb = netdev_alloc_skb(dev, rp->rx_buf_sz);
1172 rp->rx_skbuff[i] = skb;
1176 rp->rx_skbuff_dma[i] =
1177 pci_map_single(rp->pdev, skb->data, rp->rx_buf_sz,
1178 PCI_DMA_FROMDEVICE);
1179 if (dma_mapping_error(&rp->pdev->dev, rp->rx_skbuff_dma[i])) {
1180 rp->rx_skbuff_dma[i] = 0;
1184 rp->rx_ring[i].addr = cpu_to_le32(rp->rx_skbuff_dma[i]);
1185 rp->rx_ring[i].rx_status = cpu_to_le32(DescOwn);
1187 rp->dirty_rx = (unsigned int)(i - RX_RING_SIZE);
1190 static void free_rbufs(struct net_device* dev)
1192 struct rhine_private *rp = netdev_priv(dev);
1195 /* Free all the skbuffs in the Rx queue. */
1196 for (i = 0; i < RX_RING_SIZE; i++) {
1197 rp->rx_ring[i].rx_status = 0;
1198 rp->rx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */
1199 if (rp->rx_skbuff[i]) {
1200 pci_unmap_single(rp->pdev,
1201 rp->rx_skbuff_dma[i],
1202 rp->rx_buf_sz, PCI_DMA_FROMDEVICE);
1203 dev_kfree_skb(rp->rx_skbuff[i]);
1205 rp->rx_skbuff[i] = NULL;
1209 static void alloc_tbufs(struct net_device* dev)
1211 struct rhine_private *rp = netdev_priv(dev);
1215 rp->dirty_tx = rp->cur_tx = 0;
1216 next = rp->tx_ring_dma;
1217 for (i = 0; i < TX_RING_SIZE; i++) {
1218 rp->tx_skbuff[i] = NULL;
1219 rp->tx_ring[i].tx_status = 0;
1220 rp->tx_ring[i].desc_length = cpu_to_le32(TXDESC);
1221 next += sizeof(struct tx_desc);
1222 rp->tx_ring[i].next_desc = cpu_to_le32(next);
1223 if (rp->quirks & rqRhineI)
1224 rp->tx_buf[i] = &rp->tx_bufs[i * PKT_BUF_SZ];
1226 rp->tx_ring[i-1].next_desc = cpu_to_le32(rp->tx_ring_dma);
1230 static void free_tbufs(struct net_device* dev)
1232 struct rhine_private *rp = netdev_priv(dev);
1235 for (i = 0; i < TX_RING_SIZE; i++) {
1236 rp->tx_ring[i].tx_status = 0;
1237 rp->tx_ring[i].desc_length = cpu_to_le32(TXDESC);
1238 rp->tx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */
1239 if (rp->tx_skbuff[i]) {
1240 if (rp->tx_skbuff_dma[i]) {
1241 pci_unmap_single(rp->pdev,
1242 rp->tx_skbuff_dma[i],
1243 rp->tx_skbuff[i]->len,
1246 dev_kfree_skb(rp->tx_skbuff[i]);
1248 rp->tx_skbuff[i] = NULL;
1249 rp->tx_buf[i] = NULL;
1253 static void rhine_check_media(struct net_device *dev, unsigned int init_media)
1255 struct rhine_private *rp = netdev_priv(dev);
1256 void __iomem *ioaddr = rp->base;
1258 mii_check_media(&rp->mii_if, netif_msg_link(rp), init_media);
1260 if (rp->mii_if.full_duplex)
1261 iowrite8(ioread8(ioaddr + ChipCmd1) | Cmd1FDuplex,
1264 iowrite8(ioread8(ioaddr + ChipCmd1) & ~Cmd1FDuplex,
1267 netif_info(rp, link, dev, "force_media %d, carrier %d\n",
1268 rp->mii_if.force_media, netif_carrier_ok(dev));
1271 /* Called after status of force_media possibly changed */
1272 static void rhine_set_carrier(struct mii_if_info *mii)
1274 struct net_device *dev = mii->dev;
1275 struct rhine_private *rp = netdev_priv(dev);
1277 if (mii->force_media) {
1278 /* autoneg is off: Link is always assumed to be up */
1279 if (!netif_carrier_ok(dev))
1280 netif_carrier_on(dev);
1281 } else /* Let MMI library update carrier status */
1282 rhine_check_media(dev, 0);
1284 netif_info(rp, link, dev, "force_media %d, carrier %d\n",
1285 mii->force_media, netif_carrier_ok(dev));
1289 * rhine_set_cam - set CAM multicast filters
1290 * @ioaddr: register block of this Rhine
1291 * @idx: multicast CAM index [0..MCAM_SIZE-1]
1292 * @addr: multicast address (6 bytes)
1294 * Load addresses into multicast filters.
1296 static void rhine_set_cam(void __iomem *ioaddr, int idx, u8 *addr)
1300 iowrite8(CAMC_CAMEN, ioaddr + CamCon);
1303 /* Paranoid -- idx out of range should never happen */
1304 idx &= (MCAM_SIZE - 1);
1306 iowrite8((u8) idx, ioaddr + CamAddr);
1308 for (i = 0; i < 6; i++, addr++)
1309 iowrite8(*addr, ioaddr + MulticastFilter0 + i);
1313 iowrite8(CAMC_CAMWR | CAMC_CAMEN, ioaddr + CamCon);
1316 iowrite8(0, ioaddr + CamCon);
1320 * rhine_set_vlan_cam - set CAM VLAN filters
1321 * @ioaddr: register block of this Rhine
1322 * @idx: VLAN CAM index [0..VCAM_SIZE-1]
1323 * @addr: VLAN ID (2 bytes)
1325 * Load addresses into VLAN filters.
1327 static void rhine_set_vlan_cam(void __iomem *ioaddr, int idx, u8 *addr)
1329 iowrite8(CAMC_CAMEN | CAMC_VCAMSL, ioaddr + CamCon);
1332 /* Paranoid -- idx out of range should never happen */
1333 idx &= (VCAM_SIZE - 1);
1335 iowrite8((u8) idx, ioaddr + CamAddr);
1337 iowrite16(*((u16 *) addr), ioaddr + MulticastFilter0 + 6);
1341 iowrite8(CAMC_CAMWR | CAMC_CAMEN, ioaddr + CamCon);
1344 iowrite8(0, ioaddr + CamCon);
1348 * rhine_set_cam_mask - set multicast CAM mask
1349 * @ioaddr: register block of this Rhine
1350 * @mask: multicast CAM mask
1352 * Mask sets multicast filters active/inactive.
1354 static void rhine_set_cam_mask(void __iomem *ioaddr, u32 mask)
1356 iowrite8(CAMC_CAMEN, ioaddr + CamCon);
1360 iowrite32(mask, ioaddr + CamMask);
1363 iowrite8(0, ioaddr + CamCon);
1367 * rhine_set_vlan_cam_mask - set VLAN CAM mask
1368 * @ioaddr: register block of this Rhine
1369 * @mask: VLAN CAM mask
1371 * Mask sets VLAN filters active/inactive.
1373 static void rhine_set_vlan_cam_mask(void __iomem *ioaddr, u32 mask)
1375 iowrite8(CAMC_CAMEN | CAMC_VCAMSL, ioaddr + CamCon);
1379 iowrite32(mask, ioaddr + CamMask);
1382 iowrite8(0, ioaddr + CamCon);
1386 * rhine_init_cam_filter - initialize CAM filters
1387 * @dev: network device
1389 * Initialize (disable) hardware VLAN and multicast support on this
1392 static void rhine_init_cam_filter(struct net_device *dev)
1394 struct rhine_private *rp = netdev_priv(dev);
1395 void __iomem *ioaddr = rp->base;
1397 /* Disable all CAMs */
1398 rhine_set_vlan_cam_mask(ioaddr, 0);
1399 rhine_set_cam_mask(ioaddr, 0);
1401 /* disable hardware VLAN support */
1402 BYTE_REG_BITS_ON(TCR_PQEN, ioaddr + TxConfig);
1403 BYTE_REG_BITS_OFF(BCR1_VIDFR, ioaddr + PCIBusConfig1);
1407 * rhine_update_vcam - update VLAN CAM filters
1408 * @rp: rhine_private data of this Rhine
1410 * Update VLAN CAM filters to match configuration change.
1412 static void rhine_update_vcam(struct net_device *dev)
1414 struct rhine_private *rp = netdev_priv(dev);
1415 void __iomem *ioaddr = rp->base;
1417 u32 vCAMmask = 0; /* 32 vCAMs (6105M and better) */
1420 for_each_set_bit(vid, rp->active_vlans, VLAN_N_VID) {
1421 rhine_set_vlan_cam(ioaddr, i, (u8 *)&vid);
1423 if (++i >= VCAM_SIZE)
1426 rhine_set_vlan_cam_mask(ioaddr, vCAMmask);
1429 static int rhine_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
1431 struct rhine_private *rp = netdev_priv(dev);
1433 spin_lock_bh(&rp->lock);
1434 set_bit(vid, rp->active_vlans);
1435 rhine_update_vcam(dev);
1436 spin_unlock_bh(&rp->lock);
1440 static int rhine_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
1442 struct rhine_private *rp = netdev_priv(dev);
1444 spin_lock_bh(&rp->lock);
1445 clear_bit(vid, rp->active_vlans);
1446 rhine_update_vcam(dev);
1447 spin_unlock_bh(&rp->lock);
1451 static void init_registers(struct net_device *dev)
1453 struct rhine_private *rp = netdev_priv(dev);
1454 void __iomem *ioaddr = rp->base;
1457 for (i = 0; i < 6; i++)
1458 iowrite8(dev->dev_addr[i], ioaddr + StationAddr + i);
1460 /* Initialize other registers. */
1461 iowrite16(0x0006, ioaddr + PCIBusConfig); /* Tune configuration??? */
1462 /* Configure initial FIFO thresholds. */
1463 iowrite8(0x20, ioaddr + TxConfig);
1464 rp->tx_thresh = 0x20;
1465 rp->rx_thresh = 0x60; /* Written in rhine_set_rx_mode(). */
1467 iowrite32(rp->rx_ring_dma, ioaddr + RxRingPtr);
1468 iowrite32(rp->tx_ring_dma, ioaddr + TxRingPtr);
1470 rhine_set_rx_mode(dev);
1472 if (rp->pdev->revision >= VT6105M)
1473 rhine_init_cam_filter(dev);
1475 napi_enable(&rp->napi);
1477 iowrite16(RHINE_EVENT & 0xffff, ioaddr + IntrEnable);
1479 iowrite16(CmdStart | CmdTxOn | CmdRxOn | (Cmd1NoTxPoll << 8),
1481 rhine_check_media(dev, 1);
1484 /* Enable MII link status auto-polling (required for IntrLinkChange) */
1485 static void rhine_enable_linkmon(struct rhine_private *rp)
1487 void __iomem *ioaddr = rp->base;
1489 iowrite8(0, ioaddr + MIICmd);
1490 iowrite8(MII_BMSR, ioaddr + MIIRegAddr);
1491 iowrite8(0x80, ioaddr + MIICmd);
1493 rhine_wait_bit_high(rp, MIIRegAddr, 0x20);
1495 iowrite8(MII_BMSR | 0x40, ioaddr + MIIRegAddr);
1498 /* Disable MII link status auto-polling (required for MDIO access) */
1499 static void rhine_disable_linkmon(struct rhine_private *rp)
1501 void __iomem *ioaddr = rp->base;
1503 iowrite8(0, ioaddr + MIICmd);
1505 if (rp->quirks & rqRhineI) {
1506 iowrite8(0x01, ioaddr + MIIRegAddr); // MII_BMSR
1508 /* Can be called from ISR. Evil. */
1511 /* 0x80 must be set immediately before turning it off */
1512 iowrite8(0x80, ioaddr + MIICmd);
1514 rhine_wait_bit_high(rp, MIIRegAddr, 0x20);
1516 /* Heh. Now clear 0x80 again. */
1517 iowrite8(0, ioaddr + MIICmd);
1520 rhine_wait_bit_high(rp, MIIRegAddr, 0x80);
1523 /* Read and write over the MII Management Data I/O (MDIO) interface. */
1525 static int mdio_read(struct net_device *dev, int phy_id, int regnum)
1527 struct rhine_private *rp = netdev_priv(dev);
1528 void __iomem *ioaddr = rp->base;
1531 rhine_disable_linkmon(rp);
1533 /* rhine_disable_linkmon already cleared MIICmd */
1534 iowrite8(phy_id, ioaddr + MIIPhyAddr);
1535 iowrite8(regnum, ioaddr + MIIRegAddr);
1536 iowrite8(0x40, ioaddr + MIICmd); /* Trigger read */
1537 rhine_wait_bit_low(rp, MIICmd, 0x40);
1538 result = ioread16(ioaddr + MIIData);
1540 rhine_enable_linkmon(rp);
1544 static void mdio_write(struct net_device *dev, int phy_id, int regnum, int value)
1546 struct rhine_private *rp = netdev_priv(dev);
1547 void __iomem *ioaddr = rp->base;
1549 rhine_disable_linkmon(rp);
1551 /* rhine_disable_linkmon already cleared MIICmd */
1552 iowrite8(phy_id, ioaddr + MIIPhyAddr);
1553 iowrite8(regnum, ioaddr + MIIRegAddr);
1554 iowrite16(value, ioaddr + MIIData);
1555 iowrite8(0x20, ioaddr + MIICmd); /* Trigger write */
1556 rhine_wait_bit_low(rp, MIICmd, 0x20);
1558 rhine_enable_linkmon(rp);
1561 static void rhine_task_disable(struct rhine_private *rp)
1563 mutex_lock(&rp->task_lock);
1564 rp->task_enable = false;
1565 mutex_unlock(&rp->task_lock);
1567 cancel_work_sync(&rp->slow_event_task);
1568 cancel_work_sync(&rp->reset_task);
1571 static void rhine_task_enable(struct rhine_private *rp)
1573 mutex_lock(&rp->task_lock);
1574 rp->task_enable = true;
1575 mutex_unlock(&rp->task_lock);
1578 static int rhine_open(struct net_device *dev)
1580 struct rhine_private *rp = netdev_priv(dev);
1581 void __iomem *ioaddr = rp->base;
1584 rc = request_irq(rp->pdev->irq, rhine_interrupt, IRQF_SHARED, dev->name,
1589 netif_dbg(rp, ifup, dev, "%s() irq %d\n", __func__, rp->pdev->irq);
1591 rc = alloc_ring(dev);
1593 free_irq(rp->pdev->irq, dev);
1598 rhine_chip_reset(dev);
1599 rhine_task_enable(rp);
1600 init_registers(dev);
1602 netif_dbg(rp, ifup, dev, "%s() Done - status %04x MII status: %04x\n",
1603 __func__, ioread16(ioaddr + ChipCmd),
1604 mdio_read(dev, rp->mii_if.phy_id, MII_BMSR));
1606 netif_start_queue(dev);
1611 static void rhine_reset_task(struct work_struct *work)
1613 struct rhine_private *rp = container_of(work, struct rhine_private,
1615 struct net_device *dev = rp->dev;
1617 mutex_lock(&rp->task_lock);
1619 if (!rp->task_enable)
1622 napi_disable(&rp->napi);
1623 netif_tx_disable(dev);
1624 spin_lock_bh(&rp->lock);
1626 /* clear all descriptors */
1632 /* Reinitialize the hardware. */
1633 rhine_chip_reset(dev);
1634 init_registers(dev);
1636 spin_unlock_bh(&rp->lock);
1638 dev->trans_start = jiffies; /* prevent tx timeout */
1639 dev->stats.tx_errors++;
1640 netif_wake_queue(dev);
1643 mutex_unlock(&rp->task_lock);
1646 static void rhine_tx_timeout(struct net_device *dev)
1648 struct rhine_private *rp = netdev_priv(dev);
1649 void __iomem *ioaddr = rp->base;
1651 netdev_warn(dev, "Transmit timed out, status %04x, PHY status %04x, resetting...\n",
1652 ioread16(ioaddr + IntrStatus),
1653 mdio_read(dev, rp->mii_if.phy_id, MII_BMSR));
1655 schedule_work(&rp->reset_task);
1658 static netdev_tx_t rhine_start_tx(struct sk_buff *skb,
1659 struct net_device *dev)
1661 struct rhine_private *rp = netdev_priv(dev);
1662 void __iomem *ioaddr = rp->base;
1665 /* Caution: the write order is important here, set the field
1666 with the "ownership" bits last. */
1668 /* Calculate the next Tx descriptor entry. */
1669 entry = rp->cur_tx % TX_RING_SIZE;
1671 if (skb_padto(skb, ETH_ZLEN))
1672 return NETDEV_TX_OK;
1674 rp->tx_skbuff[entry] = skb;
1676 if ((rp->quirks & rqRhineI) &&
1677 (((unsigned long)skb->data & 3) || skb_shinfo(skb)->nr_frags != 0 || skb->ip_summed == CHECKSUM_PARTIAL)) {
1678 /* Must use alignment buffer. */
1679 if (skb->len > PKT_BUF_SZ) {
1680 /* packet too long, drop it */
1681 dev_kfree_skb_any(skb);
1682 rp->tx_skbuff[entry] = NULL;
1683 dev->stats.tx_dropped++;
1684 return NETDEV_TX_OK;
1687 /* Padding is not copied and so must be redone. */
1688 skb_copy_and_csum_dev(skb, rp->tx_buf[entry]);
1689 if (skb->len < ETH_ZLEN)
1690 memset(rp->tx_buf[entry] + skb->len, 0,
1691 ETH_ZLEN - skb->len);
1692 rp->tx_skbuff_dma[entry] = 0;
1693 rp->tx_ring[entry].addr = cpu_to_le32(rp->tx_bufs_dma +
1694 (rp->tx_buf[entry] -
1697 rp->tx_skbuff_dma[entry] =
1698 pci_map_single(rp->pdev, skb->data, skb->len,
1700 if (dma_mapping_error(&rp->pdev->dev, rp->tx_skbuff_dma[entry])) {
1701 dev_kfree_skb_any(skb);
1702 rp->tx_skbuff_dma[entry] = 0;
1703 dev->stats.tx_dropped++;
1704 return NETDEV_TX_OK;
1706 rp->tx_ring[entry].addr = cpu_to_le32(rp->tx_skbuff_dma[entry]);
1709 rp->tx_ring[entry].desc_length =
1710 cpu_to_le32(TXDESC | (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN));
1712 if (unlikely(vlan_tx_tag_present(skb))) {
1713 u16 vid_pcp = vlan_tx_tag_get(skb);
1715 /* drop CFI/DEI bit, register needs VID and PCP */
1716 vid_pcp = (vid_pcp & VLAN_VID_MASK) |
1717 ((vid_pcp & VLAN_PRIO_MASK) >> 1);
1718 rp->tx_ring[entry].tx_status = cpu_to_le32((vid_pcp) << 16);
1719 /* request tagging */
1720 rp->tx_ring[entry].desc_length |= cpu_to_le32(0x020000);
1723 rp->tx_ring[entry].tx_status = 0;
1727 rp->tx_ring[entry].tx_status |= cpu_to_le32(DescOwn);
1732 /* Non-x86 Todo: explicitly flush cache lines here. */
1734 if (vlan_tx_tag_present(skb))
1735 /* Tx queues are bits 7-0 (first Tx queue: bit 7) */
1736 BYTE_REG_BITS_ON(1 << 7, ioaddr + TQWake);
1738 /* Wake the potentially-idle transmit channel */
1739 iowrite8(ioread8(ioaddr + ChipCmd1) | Cmd1TxDemand,
1743 if (rp->cur_tx == rp->dirty_tx + TX_QUEUE_LEN)
1744 netif_stop_queue(dev);
1746 netif_dbg(rp, tx_queued, dev, "Transmit frame #%d queued in slot %d\n",
1747 rp->cur_tx - 1, entry);
1749 return NETDEV_TX_OK;
1752 static void rhine_irq_disable(struct rhine_private *rp)
1754 iowrite16(0x0000, rp->base + IntrEnable);
1758 /* The interrupt handler does all of the Rx thread work and cleans up
1759 after the Tx thread. */
1760 static irqreturn_t rhine_interrupt(int irq, void *dev_instance)
1762 struct net_device *dev = dev_instance;
1763 struct rhine_private *rp = netdev_priv(dev);
1767 status = rhine_get_events(rp);
1769 netif_dbg(rp, intr, dev, "Interrupt, status %08x\n", status);
1771 if (status & RHINE_EVENT) {
1774 rhine_irq_disable(rp);
1775 napi_schedule(&rp->napi);
1778 if (status & ~(IntrLinkChange | IntrStatsMax | RHINE_EVENT_NAPI)) {
1779 netif_err(rp, intr, dev, "Something Wicked happened! %08x\n",
1783 return IRQ_RETVAL(handled);
1786 /* This routine is logically part of the interrupt handler, but isolated
1788 static void rhine_tx(struct net_device *dev)
1790 struct rhine_private *rp = netdev_priv(dev);
1791 int txstatus = 0, entry = rp->dirty_tx % TX_RING_SIZE;
1793 /* find and cleanup dirty tx descriptors */
1794 while (rp->dirty_tx != rp->cur_tx) {
1795 txstatus = le32_to_cpu(rp->tx_ring[entry].tx_status);
1796 netif_dbg(rp, tx_done, dev, "Tx scavenge %d status %08x\n",
1798 if (txstatus & DescOwn)
1800 if (txstatus & 0x8000) {
1801 netif_dbg(rp, tx_done, dev,
1802 "Transmit error, Tx status %08x\n", txstatus);
1803 dev->stats.tx_errors++;
1804 if (txstatus & 0x0400)
1805 dev->stats.tx_carrier_errors++;
1806 if (txstatus & 0x0200)
1807 dev->stats.tx_window_errors++;
1808 if (txstatus & 0x0100)
1809 dev->stats.tx_aborted_errors++;
1810 if (txstatus & 0x0080)
1811 dev->stats.tx_heartbeat_errors++;
1812 if (((rp->quirks & rqRhineI) && txstatus & 0x0002) ||
1813 (txstatus & 0x0800) || (txstatus & 0x1000)) {
1814 dev->stats.tx_fifo_errors++;
1815 rp->tx_ring[entry].tx_status = cpu_to_le32(DescOwn);
1816 break; /* Keep the skb - we try again */
1818 /* Transmitter restarted in 'abnormal' handler. */
1820 if (rp->quirks & rqRhineI)
1821 dev->stats.collisions += (txstatus >> 3) & 0x0F;
1823 dev->stats.collisions += txstatus & 0x0F;
1824 netif_dbg(rp, tx_done, dev, "collisions: %1.1x:%1.1x\n",
1825 (txstatus >> 3) & 0xF, txstatus & 0xF);
1827 u64_stats_update_begin(&rp->tx_stats.syncp);
1828 rp->tx_stats.bytes += rp->tx_skbuff[entry]->len;
1829 rp->tx_stats.packets++;
1830 u64_stats_update_end(&rp->tx_stats.syncp);
1832 /* Free the original skb. */
1833 if (rp->tx_skbuff_dma[entry]) {
1834 pci_unmap_single(rp->pdev,
1835 rp->tx_skbuff_dma[entry],
1836 rp->tx_skbuff[entry]->len,
1839 dev_consume_skb_any(rp->tx_skbuff[entry]);
1840 rp->tx_skbuff[entry] = NULL;
1841 entry = (++rp->dirty_tx) % TX_RING_SIZE;
1843 if ((rp->cur_tx - rp->dirty_tx) < TX_QUEUE_LEN - 4)
1844 netif_wake_queue(dev);
1848 * rhine_get_vlan_tci - extract TCI from Rx data buffer
1849 * @skb: pointer to sk_buff
1850 * @data_size: used data area of the buffer including CRC
1852 * If hardware VLAN tag extraction is enabled and the chip indicates a 802.1Q
1853 * packet, the extracted 802.1Q header (2 bytes TPID + 2 bytes TCI) is 4-byte
1854 * aligned following the CRC.
1856 static inline u16 rhine_get_vlan_tci(struct sk_buff *skb, int data_size)
1858 u8 *trailer = (u8 *)skb->data + ((data_size + 3) & ~3) + 2;
1859 return be16_to_cpup((__be16 *)trailer);
1862 /* Process up to limit frames from receive ring */
1863 static int rhine_rx(struct net_device *dev, int limit)
1865 struct rhine_private *rp = netdev_priv(dev);
1867 int entry = rp->cur_rx % RX_RING_SIZE;
1869 netif_dbg(rp, rx_status, dev, "%s(), entry %d status %08x\n", __func__,
1870 entry, le32_to_cpu(rp->rx_head_desc->rx_status));
1872 /* If EOP is set on the next entry, it's a new packet. Send it up. */
1873 for (count = 0; count < limit; ++count) {
1874 struct rx_desc *desc = rp->rx_head_desc;
1875 u32 desc_status = le32_to_cpu(desc->rx_status);
1876 u32 desc_length = le32_to_cpu(desc->desc_length);
1877 int data_size = desc_status >> 16;
1879 if (desc_status & DescOwn)
1882 netif_dbg(rp, rx_status, dev, "%s() status %08x\n", __func__,
1885 if ((desc_status & (RxWholePkt | RxErr)) != RxWholePkt) {
1886 if ((desc_status & RxWholePkt) != RxWholePkt) {
1888 "Oversized Ethernet frame spanned multiple buffers, "
1889 "entry %#x length %d status %08x!\n",
1893 "Oversized Ethernet frame %p vs %p\n",
1895 &rp->rx_ring[entry]);
1896 dev->stats.rx_length_errors++;
1897 } else if (desc_status & RxErr) {
1898 /* There was a error. */
1899 netif_dbg(rp, rx_err, dev,
1900 "%s() Rx error %08x\n", __func__,
1902 dev->stats.rx_errors++;
1903 if (desc_status & 0x0030)
1904 dev->stats.rx_length_errors++;
1905 if (desc_status & 0x0048)
1906 dev->stats.rx_fifo_errors++;
1907 if (desc_status & 0x0004)
1908 dev->stats.rx_frame_errors++;
1909 if (desc_status & 0x0002) {
1910 /* this can also be updated outside the interrupt handler */
1911 spin_lock(&rp->lock);
1912 dev->stats.rx_crc_errors++;
1913 spin_unlock(&rp->lock);
1917 struct sk_buff *skb = NULL;
1918 /* Length should omit the CRC */
1919 int pkt_len = data_size - 4;
1922 /* Check if the packet is long enough to accept without
1923 copying to a minimally-sized skbuff. */
1924 if (pkt_len < rx_copybreak)
1925 skb = netdev_alloc_skb_ip_align(dev, pkt_len);
1927 pci_dma_sync_single_for_cpu(rp->pdev,
1928 rp->rx_skbuff_dma[entry],
1930 PCI_DMA_FROMDEVICE);
1932 skb_copy_to_linear_data(skb,
1933 rp->rx_skbuff[entry]->data,
1935 skb_put(skb, pkt_len);
1936 pci_dma_sync_single_for_device(rp->pdev,
1937 rp->rx_skbuff_dma[entry],
1939 PCI_DMA_FROMDEVICE);
1941 skb = rp->rx_skbuff[entry];
1943 netdev_err(dev, "Inconsistent Rx descriptor chain\n");
1946 rp->rx_skbuff[entry] = NULL;
1947 skb_put(skb, pkt_len);
1948 pci_unmap_single(rp->pdev,
1949 rp->rx_skbuff_dma[entry],
1951 PCI_DMA_FROMDEVICE);
1954 if (unlikely(desc_length & DescTag))
1955 vlan_tci = rhine_get_vlan_tci(skb, data_size);
1957 skb->protocol = eth_type_trans(skb, dev);
1959 if (unlikely(desc_length & DescTag))
1960 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tci);
1961 netif_receive_skb(skb);
1963 u64_stats_update_begin(&rp->rx_stats.syncp);
1964 rp->rx_stats.bytes += pkt_len;
1965 rp->rx_stats.packets++;
1966 u64_stats_update_end(&rp->rx_stats.syncp);
1968 entry = (++rp->cur_rx) % RX_RING_SIZE;
1969 rp->rx_head_desc = &rp->rx_ring[entry];
1972 /* Refill the Rx ring buffers. */
1973 for (; rp->cur_rx - rp->dirty_rx > 0; rp->dirty_rx++) {
1974 struct sk_buff *skb;
1975 entry = rp->dirty_rx % RX_RING_SIZE;
1976 if (rp->rx_skbuff[entry] == NULL) {
1977 skb = netdev_alloc_skb(dev, rp->rx_buf_sz);
1978 rp->rx_skbuff[entry] = skb;
1980 break; /* Better luck next round. */
1981 rp->rx_skbuff_dma[entry] =
1982 pci_map_single(rp->pdev, skb->data,
1984 PCI_DMA_FROMDEVICE);
1985 if (dma_mapping_error(&rp->pdev->dev, rp->rx_skbuff_dma[entry])) {
1987 rp->rx_skbuff_dma[entry] = 0;
1990 rp->rx_ring[entry].addr = cpu_to_le32(rp->rx_skbuff_dma[entry]);
1992 rp->rx_ring[entry].rx_status = cpu_to_le32(DescOwn);
1998 static void rhine_restart_tx(struct net_device *dev) {
1999 struct rhine_private *rp = netdev_priv(dev);
2000 void __iomem *ioaddr = rp->base;
2001 int entry = rp->dirty_tx % TX_RING_SIZE;
2005 * If new errors occurred, we need to sort them out before doing Tx.
2006 * In that case the ISR will be back here RSN anyway.
2008 intr_status = rhine_get_events(rp);
2010 if ((intr_status & IntrTxErrSummary) == 0) {
2012 /* We know better than the chip where it should continue. */
2013 iowrite32(rp->tx_ring_dma + entry * sizeof(struct tx_desc),
2014 ioaddr + TxRingPtr);
2016 iowrite8(ioread8(ioaddr + ChipCmd) | CmdTxOn,
2019 if (rp->tx_ring[entry].desc_length & cpu_to_le32(0x020000))
2020 /* Tx queues are bits 7-0 (first Tx queue: bit 7) */
2021 BYTE_REG_BITS_ON(1 << 7, ioaddr + TQWake);
2023 iowrite8(ioread8(ioaddr + ChipCmd1) | Cmd1TxDemand,
2028 /* This should never happen */
2029 netif_warn(rp, tx_err, dev, "another error occurred %08x\n",
2035 static void rhine_slow_event_task(struct work_struct *work)
2037 struct rhine_private *rp =
2038 container_of(work, struct rhine_private, slow_event_task);
2039 struct net_device *dev = rp->dev;
2042 mutex_lock(&rp->task_lock);
2044 if (!rp->task_enable)
2047 intr_status = rhine_get_events(rp);
2048 rhine_ack_events(rp, intr_status & RHINE_EVENT_SLOW);
2050 if (intr_status & IntrLinkChange)
2051 rhine_check_media(dev, 0);
2053 if (intr_status & IntrPCIErr)
2054 netif_warn(rp, hw, dev, "PCI error\n");
2056 iowrite16(RHINE_EVENT & 0xffff, rp->base + IntrEnable);
2059 mutex_unlock(&rp->task_lock);
2062 static struct rtnl_link_stats64 *
2063 rhine_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
2065 struct rhine_private *rp = netdev_priv(dev);
2068 spin_lock_bh(&rp->lock);
2069 rhine_update_rx_crc_and_missed_errord(rp);
2070 spin_unlock_bh(&rp->lock);
2072 netdev_stats_to_stats64(stats, &dev->stats);
2075 start = u64_stats_fetch_begin_irq(&rp->rx_stats.syncp);
2076 stats->rx_packets = rp->rx_stats.packets;
2077 stats->rx_bytes = rp->rx_stats.bytes;
2078 } while (u64_stats_fetch_retry_irq(&rp->rx_stats.syncp, start));
2081 start = u64_stats_fetch_begin_irq(&rp->tx_stats.syncp);
2082 stats->tx_packets = rp->tx_stats.packets;
2083 stats->tx_bytes = rp->tx_stats.bytes;
2084 } while (u64_stats_fetch_retry_irq(&rp->tx_stats.syncp, start));
2089 static void rhine_set_rx_mode(struct net_device *dev)
2091 struct rhine_private *rp = netdev_priv(dev);
2092 void __iomem *ioaddr = rp->base;
2093 u32 mc_filter[2]; /* Multicast hash filter */
2094 u8 rx_mode = 0x0C; /* Note: 0x02=accept runt, 0x01=accept errs */
2095 struct netdev_hw_addr *ha;
2097 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
2099 iowrite32(0xffffffff, ioaddr + MulticastFilter0);
2100 iowrite32(0xffffffff, ioaddr + MulticastFilter1);
2101 } else if ((netdev_mc_count(dev) > multicast_filter_limit) ||
2102 (dev->flags & IFF_ALLMULTI)) {
2103 /* Too many to match, or accept all multicasts. */
2104 iowrite32(0xffffffff, ioaddr + MulticastFilter0);
2105 iowrite32(0xffffffff, ioaddr + MulticastFilter1);
2106 } else if (rp->pdev->revision >= VT6105M) {
2108 u32 mCAMmask = 0; /* 32 mCAMs (6105M and better) */
2109 netdev_for_each_mc_addr(ha, dev) {
2112 rhine_set_cam(ioaddr, i, ha->addr);
2116 rhine_set_cam_mask(ioaddr, mCAMmask);
2118 memset(mc_filter, 0, sizeof(mc_filter));
2119 netdev_for_each_mc_addr(ha, dev) {
2120 int bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
2122 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2124 iowrite32(mc_filter[0], ioaddr + MulticastFilter0);
2125 iowrite32(mc_filter[1], ioaddr + MulticastFilter1);
2127 /* enable/disable VLAN receive filtering */
2128 if (rp->pdev->revision >= VT6105M) {
2129 if (dev->flags & IFF_PROMISC)
2130 BYTE_REG_BITS_OFF(BCR1_VIDFR, ioaddr + PCIBusConfig1);
2132 BYTE_REG_BITS_ON(BCR1_VIDFR, ioaddr + PCIBusConfig1);
2134 BYTE_REG_BITS_ON(rx_mode, ioaddr + RxConfig);
2137 static void netdev_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2139 struct rhine_private *rp = netdev_priv(dev);
2141 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
2142 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
2143 strlcpy(info->bus_info, pci_name(rp->pdev), sizeof(info->bus_info));
2146 static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2148 struct rhine_private *rp = netdev_priv(dev);
2151 mutex_lock(&rp->task_lock);
2152 rc = mii_ethtool_gset(&rp->mii_if, cmd);
2153 mutex_unlock(&rp->task_lock);
2158 static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2160 struct rhine_private *rp = netdev_priv(dev);
2163 mutex_lock(&rp->task_lock);
2164 rc = mii_ethtool_sset(&rp->mii_if, cmd);
2165 rhine_set_carrier(&rp->mii_if);
2166 mutex_unlock(&rp->task_lock);
2171 static int netdev_nway_reset(struct net_device *dev)
2173 struct rhine_private *rp = netdev_priv(dev);
2175 return mii_nway_restart(&rp->mii_if);
2178 static u32 netdev_get_link(struct net_device *dev)
2180 struct rhine_private *rp = netdev_priv(dev);
2182 return mii_link_ok(&rp->mii_if);
2185 static u32 netdev_get_msglevel(struct net_device *dev)
2187 struct rhine_private *rp = netdev_priv(dev);
2189 return rp->msg_enable;
2192 static void netdev_set_msglevel(struct net_device *dev, u32 value)
2194 struct rhine_private *rp = netdev_priv(dev);
2196 rp->msg_enable = value;
2199 static void rhine_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2201 struct rhine_private *rp = netdev_priv(dev);
2203 if (!(rp->quirks & rqWOL))
2206 spin_lock_irq(&rp->lock);
2207 wol->supported = WAKE_PHY | WAKE_MAGIC |
2208 WAKE_UCAST | WAKE_MCAST | WAKE_BCAST; /* Untested */
2209 wol->wolopts = rp->wolopts;
2210 spin_unlock_irq(&rp->lock);
2213 static int rhine_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2215 struct rhine_private *rp = netdev_priv(dev);
2216 u32 support = WAKE_PHY | WAKE_MAGIC |
2217 WAKE_UCAST | WAKE_MCAST | WAKE_BCAST; /* Untested */
2219 if (!(rp->quirks & rqWOL))
2222 if (wol->wolopts & ~support)
2225 spin_lock_irq(&rp->lock);
2226 rp->wolopts = wol->wolopts;
2227 spin_unlock_irq(&rp->lock);
2232 static const struct ethtool_ops netdev_ethtool_ops = {
2233 .get_drvinfo = netdev_get_drvinfo,
2234 .get_settings = netdev_get_settings,
2235 .set_settings = netdev_set_settings,
2236 .nway_reset = netdev_nway_reset,
2237 .get_link = netdev_get_link,
2238 .get_msglevel = netdev_get_msglevel,
2239 .set_msglevel = netdev_set_msglevel,
2240 .get_wol = rhine_get_wol,
2241 .set_wol = rhine_set_wol,
2244 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2246 struct rhine_private *rp = netdev_priv(dev);
2249 if (!netif_running(dev))
2252 mutex_lock(&rp->task_lock);
2253 rc = generic_mii_ioctl(&rp->mii_if, if_mii(rq), cmd, NULL);
2254 rhine_set_carrier(&rp->mii_if);
2255 mutex_unlock(&rp->task_lock);
2260 static int rhine_close(struct net_device *dev)
2262 struct rhine_private *rp = netdev_priv(dev);
2263 void __iomem *ioaddr = rp->base;
2265 rhine_task_disable(rp);
2266 napi_disable(&rp->napi);
2267 netif_stop_queue(dev);
2269 netif_dbg(rp, ifdown, dev, "Shutting down ethercard, status was %04x\n",
2270 ioread16(ioaddr + ChipCmd));
2272 /* Switch to loopback mode to avoid hardware races. */
2273 iowrite8(rp->tx_thresh | 0x02, ioaddr + TxConfig);
2275 rhine_irq_disable(rp);
2277 /* Stop the chip's Tx and Rx processes. */
2278 iowrite16(CmdStop, ioaddr + ChipCmd);
2280 free_irq(rp->pdev->irq, dev);
2289 static void rhine_remove_one(struct pci_dev *pdev)
2291 struct net_device *dev = pci_get_drvdata(pdev);
2292 struct rhine_private *rp = netdev_priv(dev);
2294 unregister_netdev(dev);
2296 pci_iounmap(pdev, rp->base);
2297 pci_release_regions(pdev);
2300 pci_disable_device(pdev);
2303 static void rhine_shutdown (struct pci_dev *pdev)
2305 struct net_device *dev = pci_get_drvdata(pdev);
2306 struct rhine_private *rp = netdev_priv(dev);
2307 void __iomem *ioaddr = rp->base;
2309 if (!(rp->quirks & rqWOL))
2310 return; /* Nothing to do for non-WOL adapters */
2312 rhine_power_init(dev);
2314 /* Make sure we use pattern 0, 1 and not 4, 5 */
2315 if (rp->quirks & rq6patterns)
2316 iowrite8(0x04, ioaddr + WOLcgClr);
2318 spin_lock(&rp->lock);
2320 if (rp->wolopts & WAKE_MAGIC) {
2321 iowrite8(WOLmagic, ioaddr + WOLcrSet);
2323 * Turn EEPROM-controlled wake-up back on -- some hardware may
2324 * not cooperate otherwise.
2326 iowrite8(ioread8(ioaddr + ConfigA) | 0x03, ioaddr + ConfigA);
2329 if (rp->wolopts & (WAKE_BCAST|WAKE_MCAST))
2330 iowrite8(WOLbmcast, ioaddr + WOLcgSet);
2332 if (rp->wolopts & WAKE_PHY)
2333 iowrite8(WOLlnkon | WOLlnkoff, ioaddr + WOLcrSet);
2335 if (rp->wolopts & WAKE_UCAST)
2336 iowrite8(WOLucast, ioaddr + WOLcrSet);
2339 /* Enable legacy WOL (for old motherboards) */
2340 iowrite8(0x01, ioaddr + PwcfgSet);
2341 iowrite8(ioread8(ioaddr + StickyHW) | 0x04, ioaddr + StickyHW);
2344 spin_unlock(&rp->lock);
2346 if (system_state == SYSTEM_POWER_OFF && !avoid_D3) {
2347 iowrite8(ioread8(ioaddr + StickyHW) | 0x03, ioaddr + StickyHW);
2349 pci_wake_from_d3(pdev, true);
2350 pci_set_power_state(pdev, PCI_D3hot);
2354 #ifdef CONFIG_PM_SLEEP
2355 static int rhine_suspend(struct device *device)
2357 struct pci_dev *pdev = to_pci_dev(device);
2358 struct net_device *dev = pci_get_drvdata(pdev);
2359 struct rhine_private *rp = netdev_priv(dev);
2361 if (!netif_running(dev))
2364 rhine_task_disable(rp);
2365 rhine_irq_disable(rp);
2366 napi_disable(&rp->napi);
2368 netif_device_detach(dev);
2370 rhine_shutdown(pdev);
2375 static int rhine_resume(struct device *device)
2377 struct pci_dev *pdev = to_pci_dev(device);
2378 struct net_device *dev = pci_get_drvdata(pdev);
2379 struct rhine_private *rp = netdev_priv(dev);
2381 if (!netif_running(dev))
2385 enable_mmio(rp->pioaddr, rp->quirks);
2387 rhine_power_init(dev);
2392 rhine_task_enable(rp);
2393 spin_lock_bh(&rp->lock);
2394 init_registers(dev);
2395 spin_unlock_bh(&rp->lock);
2397 netif_device_attach(dev);
2402 static SIMPLE_DEV_PM_OPS(rhine_pm_ops, rhine_suspend, rhine_resume);
2403 #define RHINE_PM_OPS (&rhine_pm_ops)
2407 #define RHINE_PM_OPS NULL
2409 #endif /* !CONFIG_PM_SLEEP */
2411 static struct pci_driver rhine_driver = {
2413 .id_table = rhine_pci_tbl,
2414 .probe = rhine_init_one,
2415 .remove = rhine_remove_one,
2416 .shutdown = rhine_shutdown,
2417 .driver.pm = RHINE_PM_OPS,
2420 static struct dmi_system_id rhine_dmi_table[] __initdata = {
2424 DMI_MATCH(DMI_BIOS_VENDOR, "Award Software International, Inc."),
2425 DMI_MATCH(DMI_BIOS_VERSION, "6.00 PG"),
2431 DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"),
2432 DMI_MATCH(DMI_BIOS_VERSION, "6.00 PG"),
2438 static int __init rhine_init(void)
2440 /* when a module, this is printed whether or not devices are found in probe */
2442 pr_info("%s\n", version);
2444 if (dmi_check_system(rhine_dmi_table)) {
2445 /* these BIOSes fail at PXE boot if chip is in D3 */
2447 pr_warn("Broken BIOS detected, avoid_D3 enabled\n");
2450 pr_info("avoid_D3 set\n");
2452 return pci_register_driver(&rhine_driver);
2456 static void __exit rhine_cleanup(void)
2458 pci_unregister_driver(&rhine_driver);
2462 module_init(rhine_init);
2463 module_exit(rhine_cleanup);