1 /* 8139cp.c: A Linux PCI Ethernet driver for the RealTek 8139C+ chips. */
3 Copyright 2001-2004 Jeff Garzik <jgarzik@pobox.com>
5 Copyright (C) 2001, 2002 David S. Miller (davem@redhat.com) [tg3.c]
6 Copyright (C) 2000, 2001 David S. Miller (davem@redhat.com) [sungem.c]
7 Copyright 2001 Manfred Spraul [natsemi.c]
8 Copyright 1999-2001 by Donald Becker. [natsemi.c]
9 Written 1997-2001 by Donald Becker. [8139too.c]
10 Copyright 1998-2001 by Jes Sorensen, <jes@trained-monkey.org>. [acenic.c]
12 This software may be used and distributed according to the terms of
13 the GNU General Public License (GPL), incorporated herein by reference.
14 Drivers based on or derived from this code fall under the GPL and must
15 retain the authorship, copyright and license notice. This file is not
16 a complete program and may only be used when the entire operating
17 system is licensed under the GPL.
19 See the file COPYING in this distribution for more information.
23 Wake-on-LAN support - Felipe Damasio <felipewd@terra.com.br>
24 PCI suspend/resume - Felipe Damasio <felipewd@terra.com.br>
25 LinkChg interrupt - Felipe Damasio <felipewd@terra.com.br>
28 * Test Tx checksumming thoroughly
29 * Implement dev->tx_timeout
32 * Complete reset on PciErr
33 * Consider Rx interrupt mitigation using TimerIntr
34 * Investigate using skb->priority with h/w VLAN priority
35 * Investigate using High Priority Tx Queue with skb->priority
36 * Adjust Rx FIFO threshold and Max Rx DMA burst on Rx FIFO error
37 * Adjust Tx FIFO threshold and Max Tx DMA burst on Tx FIFO error
38 * Implement Tx software interrupt mitigation via
40 * The real minimum of CP_MIN_MTU is 4 bytes. However,
41 for this to be supported, one must(?) turn on packet padding.
42 * Support external MII transceivers (patch available)
45 * TX checksumming is considered experimental. It is off by
46 default, use ethtool to turn it on.
50 #define DRV_NAME "8139cp"
51 #define DRV_VERSION "1.3"
52 #define DRV_RELDATE "Mar 22, 2004"
55 #include <linux/module.h>
56 #include <linux/moduleparam.h>
57 #include <linux/kernel.h>
58 #include <linux/compiler.h>
59 #include <linux/netdevice.h>
60 #include <linux/etherdevice.h>
61 #include <linux/init.h>
62 #include <linux/pci.h>
63 #include <linux/dma-mapping.h>
64 #include <linux/delay.h>
65 #include <linux/ethtool.h>
66 #include <linux/mii.h>
67 #include <linux/if_vlan.h>
68 #include <linux/crc32.h>
71 #include <linux/tcp.h>
72 #include <linux/udp.h>
73 #include <linux/cache.h>
76 #include <asm/uaccess.h>
78 /* VLAN tagging feature enable/disable */
79 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
80 #define CP_VLAN_TAG_USED 1
81 #define CP_VLAN_TX_TAG(tx_desc,vlan_tag_value) \
82 do { (tx_desc)->opts2 = (vlan_tag_value); } while (0)
84 #define CP_VLAN_TAG_USED 0
85 #define CP_VLAN_TX_TAG(tx_desc,vlan_tag_value) \
86 do { (tx_desc)->opts2 = 0; } while (0)
89 /* These identify the driver base version and may not be removed. */
90 static char version[] =
91 KERN_INFO DRV_NAME ": 10/100 PCI Ethernet driver v" DRV_VERSION " (" DRV_RELDATE ")\n";
93 MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");
94 MODULE_DESCRIPTION("RealTek RTL-8139C+ series 10/100 PCI Ethernet driver");
95 MODULE_VERSION(DRV_VERSION);
96 MODULE_LICENSE("GPL");
98 static int debug = -1;
99 module_param(debug, int, 0);
100 MODULE_PARM_DESC (debug, "8139cp: bitmapped message enable number");
102 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
103 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
104 static int multicast_filter_limit = 32;
105 module_param(multicast_filter_limit, int, 0);
106 MODULE_PARM_DESC (multicast_filter_limit, "8139cp: maximum number of filtered multicast addresses");
108 #define PFX DRV_NAME ": "
112 #define TRUE (!FALSE)
115 #define CP_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
118 #define CP_NUM_STATS 14 /* struct cp_dma_stats, plus one */
119 #define CP_STATS_SIZE 64 /* size in bytes of DMA stats block */
120 #define CP_REGS_SIZE (0xff + 1)
121 #define CP_REGS_VER 1 /* version 1 */
122 #define CP_RX_RING_SIZE 64
123 #define CP_TX_RING_SIZE 64
124 #define CP_RING_BYTES \
125 ((sizeof(struct cp_desc) * CP_RX_RING_SIZE) + \
126 (sizeof(struct cp_desc) * CP_TX_RING_SIZE) + \
128 #define NEXT_TX(N) (((N) + 1) & (CP_TX_RING_SIZE - 1))
129 #define NEXT_RX(N) (((N) + 1) & (CP_RX_RING_SIZE - 1))
130 #define TX_BUFFS_AVAIL(CP) \
131 (((CP)->tx_tail <= (CP)->tx_head) ? \
132 (CP)->tx_tail + (CP_TX_RING_SIZE - 1) - (CP)->tx_head : \
133 (CP)->tx_tail - (CP)->tx_head - 1)
135 #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/
137 #define CP_INTERNAL_PHY 32
139 /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
140 #define RX_FIFO_THRESH 5 /* Rx buffer level before first PCI xfer. */
141 #define RX_DMA_BURST 4 /* Maximum PCI burst, '4' is 256 */
142 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
143 #define TX_EARLY_THRESH 256 /* Early Tx threshold, in bytes */
145 /* Time in jiffies before concluding the transmitter is hung. */
146 #define TX_TIMEOUT (6*HZ)
148 /* hardware minimum and maximum for a single frame's data payload */
149 #define CP_MIN_MTU 60 /* TODO: allow lower, but pad */
150 #define CP_MAX_MTU 4096
153 /* NIC register offsets */
154 MAC0 = 0x00, /* Ethernet hardware address. */
155 MAR0 = 0x08, /* Multicast filter. */
156 StatsAddr = 0x10, /* 64-bit start addr of 64-byte DMA stats blk */
157 TxRingAddr = 0x20, /* 64-bit start addr of Tx ring */
158 HiTxRingAddr = 0x28, /* 64-bit start addr of high priority Tx ring */
159 Cmd = 0x37, /* Command register */
160 IntrMask = 0x3C, /* Interrupt mask */
161 IntrStatus = 0x3E, /* Interrupt status */
162 TxConfig = 0x40, /* Tx configuration */
163 ChipVersion = 0x43, /* 8-bit chip version, inside TxConfig */
164 RxConfig = 0x44, /* Rx configuration */
165 RxMissed = 0x4C, /* 24 bits valid, write clears */
166 Cfg9346 = 0x50, /* EEPROM select/control; Cfg reg [un]lock */
167 Config1 = 0x52, /* Config1 */
168 Config3 = 0x59, /* Config3 */
169 Config4 = 0x5A, /* Config4 */
170 MultiIntr = 0x5C, /* Multiple interrupt select */
171 BasicModeCtrl = 0x62, /* MII BMCR */
172 BasicModeStatus = 0x64, /* MII BMSR */
173 NWayAdvert = 0x66, /* MII ADVERTISE */
174 NWayLPAR = 0x68, /* MII LPA */
175 NWayExpansion = 0x6A, /* MII Expansion */
176 Config5 = 0xD8, /* Config5 */
177 TxPoll = 0xD9, /* Tell chip to check Tx descriptors for work */
178 RxMaxSize = 0xDA, /* Max size of an Rx packet (8169 only) */
179 CpCmd = 0xE0, /* C+ Command register (C+ mode only) */
180 IntrMitigate = 0xE2, /* rx/tx interrupt mitigation control */
181 RxRingAddr = 0xE4, /* 64-bit start addr of Rx ring */
182 TxThresh = 0xEC, /* Early Tx threshold */
183 OldRxBufAddr = 0x30, /* DMA address of Rx ring buffer (C mode) */
184 OldTSD0 = 0x10, /* DMA address of first Tx desc (C mode) */
186 /* Tx and Rx status descriptors */
187 DescOwn = (1 << 31), /* Descriptor is owned by NIC */
188 RingEnd = (1 << 30), /* End of descriptor ring */
189 FirstFrag = (1 << 29), /* First segment of a packet */
190 LastFrag = (1 << 28), /* Final segment of a packet */
191 LargeSend = (1 << 27), /* TCP Large Send Offload (TSO) */
192 MSSShift = 16, /* MSS value position */
193 MSSMask = 0xfff, /* MSS value: 11 bits */
194 TxError = (1 << 23), /* Tx error summary */
195 RxError = (1 << 20), /* Rx error summary */
196 IPCS = (1 << 18), /* Calculate IP checksum */
197 UDPCS = (1 << 17), /* Calculate UDP/IP checksum */
198 TCPCS = (1 << 16), /* Calculate TCP/IP checksum */
199 TxVlanTag = (1 << 17), /* Add VLAN tag */
200 RxVlanTagged = (1 << 16), /* Rx VLAN tag available */
201 IPFail = (1 << 15), /* IP checksum failed */
202 UDPFail = (1 << 14), /* UDP/IP checksum failed */
203 TCPFail = (1 << 13), /* TCP/IP checksum failed */
204 NormalTxPoll = (1 << 6), /* One or more normal Tx packets to send */
205 PID1 = (1 << 17), /* 2 protocol id bits: 0==non-IP, */
206 PID0 = (1 << 16), /* 1==UDP/IP, 2==TCP/IP, 3==IP */
210 TxFIFOUnder = (1 << 25), /* Tx FIFO underrun */
211 TxOWC = (1 << 22), /* Tx Out-of-window collision */
212 TxLinkFail = (1 << 21), /* Link failed during Tx of packet */
213 TxMaxCol = (1 << 20), /* Tx aborted due to excessive collisions */
214 TxColCntShift = 16, /* Shift, to get 4-bit Tx collision cnt */
215 TxColCntMask = 0x01 | 0x02 | 0x04 | 0x08, /* 4-bit collision count */
216 RxErrFrame = (1 << 27), /* Rx frame alignment error */
217 RxMcast = (1 << 26), /* Rx multicast packet rcv'd */
218 RxErrCRC = (1 << 18), /* Rx CRC error */
219 RxErrRunt = (1 << 19), /* Rx error, packet < 64 bytes */
220 RxErrLong = (1 << 21), /* Rx error, packet > 4096 bytes */
221 RxErrFIFO = (1 << 22), /* Rx error, FIFO overflowed, pkt bad */
223 /* StatsAddr register */
224 DumpStats = (1 << 3), /* Begin stats dump */
226 /* RxConfig register */
227 RxCfgFIFOShift = 13, /* Shift, to get Rx FIFO thresh value */
228 RxCfgDMAShift = 8, /* Shift, to get Rx Max DMA value */
229 AcceptErr = 0x20, /* Accept packets with CRC errors */
230 AcceptRunt = 0x10, /* Accept runt (<64 bytes) packets */
231 AcceptBroadcast = 0x08, /* Accept broadcast packets */
232 AcceptMulticast = 0x04, /* Accept multicast packets */
233 AcceptMyPhys = 0x02, /* Accept pkts with our MAC as dest */
234 AcceptAllPhys = 0x01, /* Accept all pkts w/ physical dest */
236 /* IntrMask / IntrStatus registers */
237 PciErr = (1 << 15), /* System error on the PCI bus */
238 TimerIntr = (1 << 14), /* Asserted when TCTR reaches TimerInt value */
239 LenChg = (1 << 13), /* Cable length change */
240 SWInt = (1 << 8), /* Software-requested interrupt */
241 TxEmpty = (1 << 7), /* No Tx descriptors available */
242 RxFIFOOvr = (1 << 6), /* Rx FIFO Overflow */
243 LinkChg = (1 << 5), /* Packet underrun, or link change */
244 RxEmpty = (1 << 4), /* No Rx descriptors available */
245 TxErr = (1 << 3), /* Tx error */
246 TxOK = (1 << 2), /* Tx packet sent */
247 RxErr = (1 << 1), /* Rx error */
248 RxOK = (1 << 0), /* Rx packet received */
249 IntrResvd = (1 << 10), /* reserved, according to RealTek engineers,
250 but hardware likes to raise it */
252 IntrAll = PciErr | TimerIntr | LenChg | SWInt | TxEmpty |
253 RxFIFOOvr | LinkChg | RxEmpty | TxErr | TxOK |
254 RxErr | RxOK | IntrResvd,
256 /* C mode command register */
257 CmdReset = (1 << 4), /* Enable to reset; self-clearing */
258 RxOn = (1 << 3), /* Rx mode enable */
259 TxOn = (1 << 2), /* Tx mode enable */
261 /* C+ mode command register */
262 RxVlanOn = (1 << 6), /* Rx VLAN de-tagging enable */
263 RxChkSum = (1 << 5), /* Rx checksum offload enable */
264 PCIDAC = (1 << 4), /* PCI Dual Address Cycle (64-bit PCI) */
265 PCIMulRW = (1 << 3), /* Enable PCI read/write multiple */
266 CpRxOn = (1 << 1), /* Rx mode enable */
267 CpTxOn = (1 << 0), /* Tx mode enable */
269 /* Cfg9436 EEPROM control register */
270 Cfg9346_Lock = 0x00, /* Lock ConfigX/MII register access */
271 Cfg9346_Unlock = 0xC0, /* Unlock ConfigX/MII register access */
273 /* TxConfig register */
274 IFG = (1 << 25) | (1 << 24), /* standard IEEE interframe gap */
275 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
277 /* Early Tx Threshold register */
278 TxThreshMask = 0x3f, /* Mask bits 5-0 */
279 TxThreshMax = 2048, /* Max early Tx threshold */
281 /* Config1 register */
282 DriverLoaded = (1 << 5), /* Software marker, driver is loaded */
283 LWACT = (1 << 4), /* LWAKE active mode */
284 PMEnable = (1 << 0), /* Enable various PM features of chip */
286 /* Config3 register */
287 PARMEnable = (1 << 6), /* Enable auto-loading of PHY parms */
288 MagicPacket = (1 << 5), /* Wake up when receives a Magic Packet */
289 LinkUp = (1 << 4), /* Wake up when the cable connection is re-established */
291 /* Config4 register */
292 LWPTN = (1 << 1), /* LWAKE Pattern */
293 LWPME = (1 << 4), /* LANWAKE vs PMEB */
295 /* Config5 register */
296 BWF = (1 << 6), /* Accept Broadcast wakeup frame */
297 MWF = (1 << 5), /* Accept Multicast wakeup frame */
298 UWF = (1 << 4), /* Accept Unicast wakeup frame */
299 LANWake = (1 << 1), /* Enable LANWake signal */
300 PMEStatus = (1 << 0), /* PME status can be reset by PCI RST# */
302 cp_norx_intr_mask = PciErr | LinkChg | TxOK | TxErr | TxEmpty,
303 cp_rx_intr_mask = RxOK | RxErr | RxEmpty | RxFIFOOvr,
304 cp_intr_mask = cp_rx_intr_mask | cp_norx_intr_mask,
307 static const unsigned int cp_rx_config =
308 (RX_FIFO_THRESH << RxCfgFIFOShift) |
309 (RX_DMA_BURST << RxCfgDMAShift);
317 struct cp_dma_stats {
331 } __attribute__((packed));
333 struct cp_extra_stats {
334 unsigned long rx_frags;
339 struct net_device *dev;
343 struct pci_dev *pdev;
347 struct net_device_stats net_stats;
348 struct cp_extra_stats cp_stats;
350 unsigned rx_head ____cacheline_aligned;
352 struct cp_desc *rx_ring;
353 struct sk_buff *rx_skb[CP_RX_RING_SIZE];
355 unsigned tx_head ____cacheline_aligned;
357 struct cp_desc *tx_ring;
358 struct sk_buff *tx_skb[CP_TX_RING_SIZE];
361 unsigned wol_enabled : 1; /* Is Wake-on-LAN enabled? */
364 struct vlan_group *vlgrp;
368 struct mii_if_info mii_if;
371 #define cpr8(reg) readb(cp->regs + (reg))
372 #define cpr16(reg) readw(cp->regs + (reg))
373 #define cpr32(reg) readl(cp->regs + (reg))
374 #define cpw8(reg,val) writeb((val), cp->regs + (reg))
375 #define cpw16(reg,val) writew((val), cp->regs + (reg))
376 #define cpw32(reg,val) writel((val), cp->regs + (reg))
377 #define cpw8_f(reg,val) do { \
378 writeb((val), cp->regs + (reg)); \
379 readb(cp->regs + (reg)); \
381 #define cpw16_f(reg,val) do { \
382 writew((val), cp->regs + (reg)); \
383 readw(cp->regs + (reg)); \
385 #define cpw32_f(reg,val) do { \
386 writel((val), cp->regs + (reg)); \
387 readl(cp->regs + (reg)); \
391 static void __cp_set_rx_mode (struct net_device *dev);
392 static void cp_tx (struct cp_private *cp);
393 static void cp_clean_rings (struct cp_private *cp);
394 #ifdef CONFIG_NET_POLL_CONTROLLER
395 static void cp_poll_controller(struct net_device *dev);
397 static int cp_get_eeprom_len(struct net_device *dev);
398 static int cp_get_eeprom(struct net_device *dev,
399 struct ethtool_eeprom *eeprom, u8 *data);
400 static int cp_set_eeprom(struct net_device *dev,
401 struct ethtool_eeprom *eeprom, u8 *data);
403 static struct pci_device_id cp_pci_tbl[] = {
404 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, PCI_DEVICE_ID_REALTEK_8139), },
405 { PCI_DEVICE(PCI_VENDOR_ID_TTTECH, PCI_DEVICE_ID_TTTECH_MC322), },
408 MODULE_DEVICE_TABLE(pci, cp_pci_tbl);
411 const char str[ETH_GSTRING_LEN];
412 } ethtool_stats_keys[] = {
431 static void cp_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
433 struct cp_private *cp = netdev_priv(dev);
436 spin_lock_irqsave(&cp->lock, flags);
438 cp->cpcmd |= RxVlanOn;
439 cpw16(CpCmd, cp->cpcmd);
440 spin_unlock_irqrestore(&cp->lock, flags);
443 static void cp_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
445 struct cp_private *cp = netdev_priv(dev);
448 spin_lock_irqsave(&cp->lock, flags);
449 cp->cpcmd &= ~RxVlanOn;
450 cpw16(CpCmd, cp->cpcmd);
452 cp->vlgrp->vlan_devices[vid] = NULL;
453 spin_unlock_irqrestore(&cp->lock, flags);
455 #endif /* CP_VLAN_TAG_USED */
457 static inline void cp_set_rxbufsize (struct cp_private *cp)
459 unsigned int mtu = cp->dev->mtu;
461 if (mtu > ETH_DATA_LEN)
462 /* MTU + ethernet header + FCS + optional VLAN tag */
463 cp->rx_buf_sz = mtu + ETH_HLEN + 8;
465 cp->rx_buf_sz = PKT_BUF_SZ;
468 static inline void cp_rx_skb (struct cp_private *cp, struct sk_buff *skb,
469 struct cp_desc *desc)
471 skb->protocol = eth_type_trans (skb, cp->dev);
473 cp->net_stats.rx_packets++;
474 cp->net_stats.rx_bytes += skb->len;
475 cp->dev->last_rx = jiffies;
478 if (cp->vlgrp && (desc->opts2 & RxVlanTagged)) {
479 vlan_hwaccel_receive_skb(skb, cp->vlgrp,
480 be16_to_cpu(desc->opts2 & 0xffff));
483 netif_receive_skb(skb);
486 static void cp_rx_err_acct (struct cp_private *cp, unsigned rx_tail,
489 if (netif_msg_rx_err (cp))
491 "%s: rx err, slot %d status 0x%x len %d\n",
492 cp->dev->name, rx_tail, status, len);
493 cp->net_stats.rx_errors++;
494 if (status & RxErrFrame)
495 cp->net_stats.rx_frame_errors++;
496 if (status & RxErrCRC)
497 cp->net_stats.rx_crc_errors++;
498 if ((status & RxErrRunt) || (status & RxErrLong))
499 cp->net_stats.rx_length_errors++;
500 if ((status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag))
501 cp->net_stats.rx_length_errors++;
502 if (status & RxErrFIFO)
503 cp->net_stats.rx_fifo_errors++;
506 static inline unsigned int cp_rx_csum_ok (u32 status)
508 unsigned int protocol = (status >> 16) & 0x3;
510 if (likely((protocol == RxProtoTCP) && (!(status & TCPFail))))
512 else if ((protocol == RxProtoUDP) && (!(status & UDPFail)))
514 else if ((protocol == RxProtoIP) && (!(status & IPFail)))
519 static int cp_rx_poll (struct net_device *dev, int *budget)
521 struct cp_private *cp = netdev_priv(dev);
522 unsigned rx_tail = cp->rx_tail;
523 unsigned rx_work = dev->quota;
528 cpw16(IntrStatus, cp_rx_intr_mask);
533 struct sk_buff *skb, *new_skb;
534 struct cp_desc *desc;
537 skb = cp->rx_skb[rx_tail];
540 desc = &cp->rx_ring[rx_tail];
541 status = le32_to_cpu(desc->opts1);
542 if (status & DescOwn)
545 len = (status & 0x1fff) - 4;
546 mapping = le64_to_cpu(desc->addr);
548 if ((status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag)) {
549 /* we don't support incoming fragmented frames.
550 * instead, we attempt to ensure that the
551 * pre-allocated RX skbs are properly sized such
552 * that RX fragments are never encountered
554 cp_rx_err_acct(cp, rx_tail, status, len);
555 cp->net_stats.rx_dropped++;
556 cp->cp_stats.rx_frags++;
560 if (status & (RxError | RxErrFIFO)) {
561 cp_rx_err_acct(cp, rx_tail, status, len);
565 if (netif_msg_rx_status(cp))
566 printk(KERN_DEBUG "%s: rx slot %d status 0x%x len %d\n",
567 dev->name, rx_tail, status, len);
569 buflen = cp->rx_buf_sz + RX_OFFSET;
570 new_skb = dev_alloc_skb (buflen);
572 cp->net_stats.rx_dropped++;
576 skb_reserve(new_skb, RX_OFFSET);
579 pci_unmap_single(cp->pdev, mapping,
580 buflen, PCI_DMA_FROMDEVICE);
582 /* Handle checksum offloading for incoming packets. */
583 if (cp_rx_csum_ok(status))
584 skb->ip_summed = CHECKSUM_UNNECESSARY;
586 skb->ip_summed = CHECKSUM_NONE;
590 mapping = pci_map_single(cp->pdev, new_skb->data, buflen,
592 cp->rx_skb[rx_tail] = new_skb;
594 cp_rx_skb(cp, skb, desc);
598 cp->rx_ring[rx_tail].opts2 = 0;
599 cp->rx_ring[rx_tail].addr = cpu_to_le64(mapping);
600 if (rx_tail == (CP_RX_RING_SIZE - 1))
601 desc->opts1 = cpu_to_le32(DescOwn | RingEnd |
604 desc->opts1 = cpu_to_le32(DescOwn | cp->rx_buf_sz);
605 rx_tail = NEXT_RX(rx_tail);
611 cp->rx_tail = rx_tail;
616 /* if we did not reach work limit, then we're done with
617 * this round of polling
620 if (cpr16(IntrStatus) & cp_rx_intr_mask)
624 cpw16_f(IntrMask, cp_intr_mask);
625 __netif_rx_complete(dev);
631 return 1; /* not done */
634 static irqreturn_t cp_interrupt (int irq, void *dev_instance)
636 struct net_device *dev = dev_instance;
637 struct cp_private *cp;
640 if (unlikely(dev == NULL))
642 cp = netdev_priv(dev);
644 status = cpr16(IntrStatus);
645 if (!status || (status == 0xFFFF))
648 if (netif_msg_intr(cp))
649 printk(KERN_DEBUG "%s: intr, status %04x cmd %02x cpcmd %04x\n",
650 dev->name, status, cpr8(Cmd), cpr16(CpCmd));
652 cpw16(IntrStatus, status & ~cp_rx_intr_mask);
654 spin_lock(&cp->lock);
656 /* close possible race's with dev_close */
657 if (unlikely(!netif_running(dev))) {
659 spin_unlock(&cp->lock);
663 if (status & (RxOK | RxErr | RxEmpty | RxFIFOOvr))
664 if (netif_rx_schedule_prep(dev)) {
665 cpw16_f(IntrMask, cp_norx_intr_mask);
666 __netif_rx_schedule(dev);
669 if (status & (TxOK | TxErr | TxEmpty | SWInt))
671 if (status & LinkChg)
672 mii_check_media(&cp->mii_if, netif_msg_link(cp), FALSE);
674 spin_unlock(&cp->lock);
676 if (status & PciErr) {
679 pci_read_config_word(cp->pdev, PCI_STATUS, &pci_status);
680 pci_write_config_word(cp->pdev, PCI_STATUS, pci_status);
681 printk(KERN_ERR "%s: PCI bus error, status=%04x, PCI status=%04x\n",
682 dev->name, status, pci_status);
684 /* TODO: reset hardware */
690 #ifdef CONFIG_NET_POLL_CONTROLLER
692 * Polling receive - used by netconsole and other diagnostic tools
693 * to allow network i/o with interrupts disabled.
695 static void cp_poll_controller(struct net_device *dev)
697 disable_irq(dev->irq);
698 cp_interrupt(dev->irq, dev);
699 enable_irq(dev->irq);
703 static void cp_tx (struct cp_private *cp)
705 unsigned tx_head = cp->tx_head;
706 unsigned tx_tail = cp->tx_tail;
708 while (tx_tail != tx_head) {
709 struct cp_desc *txd = cp->tx_ring + tx_tail;
714 status = le32_to_cpu(txd->opts1);
715 if (status & DescOwn)
718 skb = cp->tx_skb[tx_tail];
721 pci_unmap_single(cp->pdev, le64_to_cpu(txd->addr),
722 le32_to_cpu(txd->opts1) & 0xffff,
725 if (status & LastFrag) {
726 if (status & (TxError | TxFIFOUnder)) {
727 if (netif_msg_tx_err(cp))
728 printk(KERN_DEBUG "%s: tx err, status 0x%x\n",
729 cp->dev->name, status);
730 cp->net_stats.tx_errors++;
732 cp->net_stats.tx_window_errors++;
733 if (status & TxMaxCol)
734 cp->net_stats.tx_aborted_errors++;
735 if (status & TxLinkFail)
736 cp->net_stats.tx_carrier_errors++;
737 if (status & TxFIFOUnder)
738 cp->net_stats.tx_fifo_errors++;
740 cp->net_stats.collisions +=
741 ((status >> TxColCntShift) & TxColCntMask);
742 cp->net_stats.tx_packets++;
743 cp->net_stats.tx_bytes += skb->len;
744 if (netif_msg_tx_done(cp))
745 printk(KERN_DEBUG "%s: tx done, slot %d\n", cp->dev->name, tx_tail);
747 dev_kfree_skb_irq(skb);
750 cp->tx_skb[tx_tail] = NULL;
752 tx_tail = NEXT_TX(tx_tail);
755 cp->tx_tail = tx_tail;
757 if (TX_BUFFS_AVAIL(cp) > (MAX_SKB_FRAGS + 1))
758 netif_wake_queue(cp->dev);
761 static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev)
763 struct cp_private *cp = netdev_priv(dev);
771 spin_lock_irq(&cp->lock);
773 /* This is a hard error, log it. */
774 if (TX_BUFFS_AVAIL(cp) <= (skb_shinfo(skb)->nr_frags + 1)) {
775 netif_stop_queue(dev);
776 spin_unlock_irq(&cp->lock);
777 printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!\n",
783 if (cp->vlgrp && vlan_tx_tag_present(skb))
784 vlan_tag = TxVlanTag | cpu_to_be16(vlan_tx_tag_get(skb));
788 eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0;
789 if (dev->features & NETIF_F_TSO)
790 mss = skb_shinfo(skb)->gso_size;
792 if (skb_shinfo(skb)->nr_frags == 0) {
793 struct cp_desc *txd = &cp->tx_ring[entry];
798 mapping = pci_map_single(cp->pdev, skb->data, len, PCI_DMA_TODEVICE);
799 CP_VLAN_TX_TAG(txd, vlan_tag);
800 txd->addr = cpu_to_le64(mapping);
803 flags = eor | len | DescOwn | FirstFrag | LastFrag;
806 flags |= LargeSend | ((mss & MSSMask) << MSSShift);
807 else if (skb->ip_summed == CHECKSUM_PARTIAL) {
808 const struct iphdr *ip = skb->nh.iph;
809 if (ip->protocol == IPPROTO_TCP)
810 flags |= IPCS | TCPCS;
811 else if (ip->protocol == IPPROTO_UDP)
812 flags |= IPCS | UDPCS;
814 WARN_ON(1); /* we need a WARN() */
817 txd->opts1 = cpu_to_le32(flags);
820 cp->tx_skb[entry] = skb;
821 entry = NEXT_TX(entry);
824 u32 first_len, first_eor;
825 dma_addr_t first_mapping;
826 int frag, first_entry = entry;
827 const struct iphdr *ip = skb->nh.iph;
829 /* We must give this initial chunk to the device last.
830 * Otherwise we could race with the device.
833 first_len = skb_headlen(skb);
834 first_mapping = pci_map_single(cp->pdev, skb->data,
835 first_len, PCI_DMA_TODEVICE);
836 cp->tx_skb[entry] = skb;
837 entry = NEXT_TX(entry);
839 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
840 skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
845 len = this_frag->size;
846 mapping = pci_map_single(cp->pdev,
847 ((void *) page_address(this_frag->page) +
848 this_frag->page_offset),
849 len, PCI_DMA_TODEVICE);
850 eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0;
852 ctrl = eor | len | DescOwn;
856 ((mss & MSSMask) << MSSShift);
857 else if (skb->ip_summed == CHECKSUM_PARTIAL) {
858 if (ip->protocol == IPPROTO_TCP)
859 ctrl |= IPCS | TCPCS;
860 else if (ip->protocol == IPPROTO_UDP)
861 ctrl |= IPCS | UDPCS;
866 if (frag == skb_shinfo(skb)->nr_frags - 1)
869 txd = &cp->tx_ring[entry];
870 CP_VLAN_TX_TAG(txd, vlan_tag);
871 txd->addr = cpu_to_le64(mapping);
874 txd->opts1 = cpu_to_le32(ctrl);
877 cp->tx_skb[entry] = skb;
878 entry = NEXT_TX(entry);
881 txd = &cp->tx_ring[first_entry];
882 CP_VLAN_TX_TAG(txd, vlan_tag);
883 txd->addr = cpu_to_le64(first_mapping);
886 if (skb->ip_summed == CHECKSUM_PARTIAL) {
887 if (ip->protocol == IPPROTO_TCP)
888 txd->opts1 = cpu_to_le32(first_eor | first_len |
889 FirstFrag | DescOwn |
891 else if (ip->protocol == IPPROTO_UDP)
892 txd->opts1 = cpu_to_le32(first_eor | first_len |
893 FirstFrag | DescOwn |
898 txd->opts1 = cpu_to_le32(first_eor | first_len |
899 FirstFrag | DescOwn);
903 if (netif_msg_tx_queued(cp))
904 printk(KERN_DEBUG "%s: tx queued, slot %d, skblen %d\n",
905 dev->name, entry, skb->len);
906 if (TX_BUFFS_AVAIL(cp) <= (MAX_SKB_FRAGS + 1))
907 netif_stop_queue(dev);
909 spin_unlock_irq(&cp->lock);
911 cpw8(TxPoll, NormalTxPoll);
912 dev->trans_start = jiffies;
917 /* Set or clear the multicast filter for this adaptor.
918 This routine is not state sensitive and need not be SMP locked. */
920 static void __cp_set_rx_mode (struct net_device *dev)
922 struct cp_private *cp = netdev_priv(dev);
923 u32 mc_filter[2]; /* Multicast hash filter */
927 /* Note: do not reorder, GCC is clever about common statements. */
928 if (dev->flags & IFF_PROMISC) {
929 /* Unconditionally log net taps. */
931 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
933 mc_filter[1] = mc_filter[0] = 0xffffffff;
934 } else if ((dev->mc_count > multicast_filter_limit)
935 || (dev->flags & IFF_ALLMULTI)) {
936 /* Too many to filter perfectly -- accept all multicasts. */
937 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
938 mc_filter[1] = mc_filter[0] = 0xffffffff;
940 struct dev_mc_list *mclist;
941 rx_mode = AcceptBroadcast | AcceptMyPhys;
942 mc_filter[1] = mc_filter[0] = 0;
943 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
944 i++, mclist = mclist->next) {
945 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
947 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
948 rx_mode |= AcceptMulticast;
952 /* We can safely update without stopping the chip. */
953 tmp = cp_rx_config | rx_mode;
954 if (cp->rx_config != tmp) {
955 cpw32_f (RxConfig, tmp);
958 cpw32_f (MAR0 + 0, mc_filter[0]);
959 cpw32_f (MAR0 + 4, mc_filter[1]);
962 static void cp_set_rx_mode (struct net_device *dev)
965 struct cp_private *cp = netdev_priv(dev);
967 spin_lock_irqsave (&cp->lock, flags);
968 __cp_set_rx_mode(dev);
969 spin_unlock_irqrestore (&cp->lock, flags);
972 static void __cp_get_stats(struct cp_private *cp)
974 /* only lower 24 bits valid; write any value to clear */
975 cp->net_stats.rx_missed_errors += (cpr32 (RxMissed) & 0xffffff);
979 static struct net_device_stats *cp_get_stats(struct net_device *dev)
981 struct cp_private *cp = netdev_priv(dev);
984 /* The chip only need report frame silently dropped. */
985 spin_lock_irqsave(&cp->lock, flags);
986 if (netif_running(dev) && netif_device_present(dev))
988 spin_unlock_irqrestore(&cp->lock, flags);
990 return &cp->net_stats;
993 static void cp_stop_hw (struct cp_private *cp)
995 cpw16(IntrStatus, ~(cpr16(IntrStatus)));
996 cpw16_f(IntrMask, 0);
999 cpw16_f(IntrStatus, ~(cpr16(IntrStatus)));
1002 cp->tx_head = cp->tx_tail = 0;
1005 static void cp_reset_hw (struct cp_private *cp)
1007 unsigned work = 1000;
1009 cpw8(Cmd, CmdReset);
1012 if (!(cpr8(Cmd) & CmdReset))
1015 schedule_timeout_uninterruptible(10);
1018 printk(KERN_ERR "%s: hardware reset timeout\n", cp->dev->name);
1021 static inline void cp_start_hw (struct cp_private *cp)
1023 cpw16(CpCmd, cp->cpcmd);
1024 cpw8(Cmd, RxOn | TxOn);
1027 static void cp_init_hw (struct cp_private *cp)
1029 struct net_device *dev = cp->dev;
1030 dma_addr_t ring_dma;
1034 cpw8_f (Cfg9346, Cfg9346_Unlock);
1036 /* Restore our idea of the MAC address. */
1037 cpw32_f (MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0)));
1038 cpw32_f (MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4)));
1041 cpw8(TxThresh, 0x06); /* XXX convert magic num to a constant */
1043 __cp_set_rx_mode(dev);
1044 cpw32_f (TxConfig, IFG | (TX_DMA_BURST << TxDMAShift));
1046 cpw8(Config1, cpr8(Config1) | DriverLoaded | PMEnable);
1047 /* Disable Wake-on-LAN. Can be turned on with ETHTOOL_SWOL */
1048 cpw8(Config3, PARMEnable);
1049 cp->wol_enabled = 0;
1051 cpw8(Config5, cpr8(Config5) & PMEStatus);
1053 cpw32_f(HiTxRingAddr, 0);
1054 cpw32_f(HiTxRingAddr + 4, 0);
1056 ring_dma = cp->ring_dma;
1057 cpw32_f(RxRingAddr, ring_dma & 0xffffffff);
1058 cpw32_f(RxRingAddr + 4, (ring_dma >> 16) >> 16);
1060 ring_dma += sizeof(struct cp_desc) * CP_RX_RING_SIZE;
1061 cpw32_f(TxRingAddr, ring_dma & 0xffffffff);
1062 cpw32_f(TxRingAddr + 4, (ring_dma >> 16) >> 16);
1064 cpw16(MultiIntr, 0);
1066 cpw16_f(IntrMask, cp_intr_mask);
1068 cpw8_f(Cfg9346, Cfg9346_Lock);
1071 static int cp_refill_rx (struct cp_private *cp)
1075 for (i = 0; i < CP_RX_RING_SIZE; i++) {
1076 struct sk_buff *skb;
1079 skb = dev_alloc_skb(cp->rx_buf_sz + RX_OFFSET);
1084 skb_reserve(skb, RX_OFFSET);
1086 mapping = pci_map_single(cp->pdev, skb->data, cp->rx_buf_sz,
1087 PCI_DMA_FROMDEVICE);
1088 cp->rx_skb[i] = skb;
1090 cp->rx_ring[i].opts2 = 0;
1091 cp->rx_ring[i].addr = cpu_to_le64(mapping);
1092 if (i == (CP_RX_RING_SIZE - 1))
1093 cp->rx_ring[i].opts1 =
1094 cpu_to_le32(DescOwn | RingEnd | cp->rx_buf_sz);
1096 cp->rx_ring[i].opts1 =
1097 cpu_to_le32(DescOwn | cp->rx_buf_sz);
1107 static void cp_init_rings_index (struct cp_private *cp)
1110 cp->tx_head = cp->tx_tail = 0;
1113 static int cp_init_rings (struct cp_private *cp)
1115 memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);
1116 cp->tx_ring[CP_TX_RING_SIZE - 1].opts1 = cpu_to_le32(RingEnd);
1118 cp_init_rings_index(cp);
1120 return cp_refill_rx (cp);
1123 static int cp_alloc_rings (struct cp_private *cp)
1127 mem = pci_alloc_consistent(cp->pdev, CP_RING_BYTES, &cp->ring_dma);
1132 cp->tx_ring = &cp->rx_ring[CP_RX_RING_SIZE];
1134 return cp_init_rings(cp);
1137 static void cp_clean_rings (struct cp_private *cp)
1139 struct cp_desc *desc;
1142 for (i = 0; i < CP_RX_RING_SIZE; i++) {
1143 if (cp->rx_skb[i]) {
1144 desc = cp->rx_ring + i;
1145 pci_unmap_single(cp->pdev, le64_to_cpu(desc->addr),
1146 cp->rx_buf_sz, PCI_DMA_FROMDEVICE);
1147 dev_kfree_skb(cp->rx_skb[i]);
1151 for (i = 0; i < CP_TX_RING_SIZE; i++) {
1152 if (cp->tx_skb[i]) {
1153 struct sk_buff *skb = cp->tx_skb[i];
1155 desc = cp->tx_ring + i;
1156 pci_unmap_single(cp->pdev, le64_to_cpu(desc->addr),
1157 le32_to_cpu(desc->opts1) & 0xffff,
1159 if (le32_to_cpu(desc->opts1) & LastFrag)
1161 cp->net_stats.tx_dropped++;
1165 memset(cp->rx_ring, 0, sizeof(struct cp_desc) * CP_RX_RING_SIZE);
1166 memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);
1168 memset(cp->rx_skb, 0, sizeof(struct sk_buff *) * CP_RX_RING_SIZE);
1169 memset(cp->tx_skb, 0, sizeof(struct sk_buff *) * CP_TX_RING_SIZE);
1172 static void cp_free_rings (struct cp_private *cp)
1175 pci_free_consistent(cp->pdev, CP_RING_BYTES, cp->rx_ring, cp->ring_dma);
1180 static int cp_open (struct net_device *dev)
1182 struct cp_private *cp = netdev_priv(dev);
1185 if (netif_msg_ifup(cp))
1186 printk(KERN_DEBUG "%s: enabling interface\n", dev->name);
1188 rc = cp_alloc_rings(cp);
1194 rc = request_irq(dev->irq, cp_interrupt, IRQF_SHARED, dev->name, dev);
1198 netif_carrier_off(dev);
1199 mii_check_media(&cp->mii_if, netif_msg_link(cp), TRUE);
1200 netif_start_queue(dev);
1210 static int cp_close (struct net_device *dev)
1212 struct cp_private *cp = netdev_priv(dev);
1213 unsigned long flags;
1215 if (netif_msg_ifdown(cp))
1216 printk(KERN_DEBUG "%s: disabling interface\n", dev->name);
1218 spin_lock_irqsave(&cp->lock, flags);
1220 netif_stop_queue(dev);
1221 netif_carrier_off(dev);
1225 spin_unlock_irqrestore(&cp->lock, flags);
1227 synchronize_irq(dev->irq);
1228 free_irq(dev->irq, dev);
1235 static int cp_change_mtu(struct net_device *dev, int new_mtu)
1237 struct cp_private *cp = netdev_priv(dev);
1239 unsigned long flags;
1241 /* check for invalid MTU, according to hardware limits */
1242 if (new_mtu < CP_MIN_MTU || new_mtu > CP_MAX_MTU)
1245 /* if network interface not up, no need for complexity */
1246 if (!netif_running(dev)) {
1248 cp_set_rxbufsize(cp); /* set new rx buf size */
1252 spin_lock_irqsave(&cp->lock, flags);
1254 cp_stop_hw(cp); /* stop h/w and free rings */
1258 cp_set_rxbufsize(cp); /* set new rx buf size */
1260 rc = cp_init_rings(cp); /* realloc and restart h/w */
1263 spin_unlock_irqrestore(&cp->lock, flags);
1269 static const char mii_2_8139_map[8] = {
1280 static int mdio_read(struct net_device *dev, int phy_id, int location)
1282 struct cp_private *cp = netdev_priv(dev);
1284 return location < 8 && mii_2_8139_map[location] ?
1285 readw(cp->regs + mii_2_8139_map[location]) : 0;
1289 static void mdio_write(struct net_device *dev, int phy_id, int location,
1292 struct cp_private *cp = netdev_priv(dev);
1294 if (location == 0) {
1295 cpw8(Cfg9346, Cfg9346_Unlock);
1296 cpw16(BasicModeCtrl, value);
1297 cpw8(Cfg9346, Cfg9346_Lock);
1298 } else if (location < 8 && mii_2_8139_map[location])
1299 cpw16(mii_2_8139_map[location], value);
1302 /* Set the ethtool Wake-on-LAN settings */
1303 static int netdev_set_wol (struct cp_private *cp,
1304 const struct ethtool_wolinfo *wol)
1308 options = cpr8 (Config3) & ~(LinkUp | MagicPacket);
1309 /* If WOL is being disabled, no need for complexity */
1311 if (wol->wolopts & WAKE_PHY) options |= LinkUp;
1312 if (wol->wolopts & WAKE_MAGIC) options |= MagicPacket;
1315 cpw8 (Cfg9346, Cfg9346_Unlock);
1316 cpw8 (Config3, options);
1317 cpw8 (Cfg9346, Cfg9346_Lock);
1319 options = 0; /* Paranoia setting */
1320 options = cpr8 (Config5) & ~(UWF | MWF | BWF);
1321 /* If WOL is being disabled, no need for complexity */
1323 if (wol->wolopts & WAKE_UCAST) options |= UWF;
1324 if (wol->wolopts & WAKE_BCAST) options |= BWF;
1325 if (wol->wolopts & WAKE_MCAST) options |= MWF;
1328 cpw8 (Config5, options);
1330 cp->wol_enabled = (wol->wolopts) ? 1 : 0;
1335 /* Get the ethtool Wake-on-LAN settings */
1336 static void netdev_get_wol (struct cp_private *cp,
1337 struct ethtool_wolinfo *wol)
1341 wol->wolopts = 0; /* Start from scratch */
1342 wol->supported = WAKE_PHY | WAKE_BCAST | WAKE_MAGIC |
1343 WAKE_MCAST | WAKE_UCAST;
1344 /* We don't need to go on if WOL is disabled */
1345 if (!cp->wol_enabled) return;
1347 options = cpr8 (Config3);
1348 if (options & LinkUp) wol->wolopts |= WAKE_PHY;
1349 if (options & MagicPacket) wol->wolopts |= WAKE_MAGIC;
1351 options = 0; /* Paranoia setting */
1352 options = cpr8 (Config5);
1353 if (options & UWF) wol->wolopts |= WAKE_UCAST;
1354 if (options & BWF) wol->wolopts |= WAKE_BCAST;
1355 if (options & MWF) wol->wolopts |= WAKE_MCAST;
1358 static void cp_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
1360 struct cp_private *cp = netdev_priv(dev);
1362 strcpy (info->driver, DRV_NAME);
1363 strcpy (info->version, DRV_VERSION);
1364 strcpy (info->bus_info, pci_name(cp->pdev));
1367 static int cp_get_regs_len(struct net_device *dev)
1369 return CP_REGS_SIZE;
1372 static int cp_get_stats_count (struct net_device *dev)
1374 return CP_NUM_STATS;
1377 static int cp_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1379 struct cp_private *cp = netdev_priv(dev);
1381 unsigned long flags;
1383 spin_lock_irqsave(&cp->lock, flags);
1384 rc = mii_ethtool_gset(&cp->mii_if, cmd);
1385 spin_unlock_irqrestore(&cp->lock, flags);
1390 static int cp_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1392 struct cp_private *cp = netdev_priv(dev);
1394 unsigned long flags;
1396 spin_lock_irqsave(&cp->lock, flags);
1397 rc = mii_ethtool_sset(&cp->mii_if, cmd);
1398 spin_unlock_irqrestore(&cp->lock, flags);
1403 static int cp_nway_reset(struct net_device *dev)
1405 struct cp_private *cp = netdev_priv(dev);
1406 return mii_nway_restart(&cp->mii_if);
1409 static u32 cp_get_msglevel(struct net_device *dev)
1411 struct cp_private *cp = netdev_priv(dev);
1412 return cp->msg_enable;
1415 static void cp_set_msglevel(struct net_device *dev, u32 value)
1417 struct cp_private *cp = netdev_priv(dev);
1418 cp->msg_enable = value;
1421 static u32 cp_get_rx_csum(struct net_device *dev)
1423 struct cp_private *cp = netdev_priv(dev);
1424 return (cpr16(CpCmd) & RxChkSum) ? 1 : 0;
1427 static int cp_set_rx_csum(struct net_device *dev, u32 data)
1429 struct cp_private *cp = netdev_priv(dev);
1430 u16 cmd = cp->cpcmd, newcmd;
1437 newcmd &= ~RxChkSum;
1439 if (newcmd != cmd) {
1440 unsigned long flags;
1442 spin_lock_irqsave(&cp->lock, flags);
1444 cpw16_f(CpCmd, newcmd);
1445 spin_unlock_irqrestore(&cp->lock, flags);
1451 static void cp_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1454 struct cp_private *cp = netdev_priv(dev);
1455 unsigned long flags;
1457 if (regs->len < CP_REGS_SIZE)
1458 return /* -EINVAL */;
1460 regs->version = CP_REGS_VER;
1462 spin_lock_irqsave(&cp->lock, flags);
1463 memcpy_fromio(p, cp->regs, CP_REGS_SIZE);
1464 spin_unlock_irqrestore(&cp->lock, flags);
1467 static void cp_get_wol (struct net_device *dev, struct ethtool_wolinfo *wol)
1469 struct cp_private *cp = netdev_priv(dev);
1470 unsigned long flags;
1472 spin_lock_irqsave (&cp->lock, flags);
1473 netdev_get_wol (cp, wol);
1474 spin_unlock_irqrestore (&cp->lock, flags);
1477 static int cp_set_wol (struct net_device *dev, struct ethtool_wolinfo *wol)
1479 struct cp_private *cp = netdev_priv(dev);
1480 unsigned long flags;
1483 spin_lock_irqsave (&cp->lock, flags);
1484 rc = netdev_set_wol (cp, wol);
1485 spin_unlock_irqrestore (&cp->lock, flags);
1490 static void cp_get_strings (struct net_device *dev, u32 stringset, u8 *buf)
1492 switch (stringset) {
1494 memcpy(buf, ðtool_stats_keys, sizeof(ethtool_stats_keys));
1502 static void cp_get_ethtool_stats (struct net_device *dev,
1503 struct ethtool_stats *estats, u64 *tmp_stats)
1505 struct cp_private *cp = netdev_priv(dev);
1506 struct cp_dma_stats *nic_stats;
1510 nic_stats = pci_alloc_consistent(cp->pdev, sizeof(*nic_stats), &dma);
1514 /* begin NIC statistics dump */
1515 cpw32(StatsAddr + 4, (u64)dma >> 32);
1516 cpw32(StatsAddr, ((u64)dma & DMA_32BIT_MASK) | DumpStats);
1519 for (i = 0; i < 1000; i++) {
1520 if ((cpr32(StatsAddr) & DumpStats) == 0)
1524 cpw32(StatsAddr, 0);
1525 cpw32(StatsAddr + 4, 0);
1529 tmp_stats[i++] = le64_to_cpu(nic_stats->tx_ok);
1530 tmp_stats[i++] = le64_to_cpu(nic_stats->rx_ok);
1531 tmp_stats[i++] = le64_to_cpu(nic_stats->tx_err);
1532 tmp_stats[i++] = le32_to_cpu(nic_stats->rx_err);
1533 tmp_stats[i++] = le16_to_cpu(nic_stats->rx_fifo);
1534 tmp_stats[i++] = le16_to_cpu(nic_stats->frame_align);
1535 tmp_stats[i++] = le32_to_cpu(nic_stats->tx_ok_1col);
1536 tmp_stats[i++] = le32_to_cpu(nic_stats->tx_ok_mcol);
1537 tmp_stats[i++] = le64_to_cpu(nic_stats->rx_ok_phys);
1538 tmp_stats[i++] = le64_to_cpu(nic_stats->rx_ok_bcast);
1539 tmp_stats[i++] = le32_to_cpu(nic_stats->rx_ok_mcast);
1540 tmp_stats[i++] = le16_to_cpu(nic_stats->tx_abort);
1541 tmp_stats[i++] = le16_to_cpu(nic_stats->tx_underrun);
1542 tmp_stats[i++] = cp->cp_stats.rx_frags;
1543 BUG_ON(i != CP_NUM_STATS);
1545 pci_free_consistent(cp->pdev, sizeof(*nic_stats), nic_stats, dma);
1548 static const struct ethtool_ops cp_ethtool_ops = {
1549 .get_drvinfo = cp_get_drvinfo,
1550 .get_regs_len = cp_get_regs_len,
1551 .get_stats_count = cp_get_stats_count,
1552 .get_settings = cp_get_settings,
1553 .set_settings = cp_set_settings,
1554 .nway_reset = cp_nway_reset,
1555 .get_link = ethtool_op_get_link,
1556 .get_msglevel = cp_get_msglevel,
1557 .set_msglevel = cp_set_msglevel,
1558 .get_rx_csum = cp_get_rx_csum,
1559 .set_rx_csum = cp_set_rx_csum,
1560 .get_tx_csum = ethtool_op_get_tx_csum,
1561 .set_tx_csum = ethtool_op_set_tx_csum, /* local! */
1562 .get_sg = ethtool_op_get_sg,
1563 .set_sg = ethtool_op_set_sg,
1564 .get_tso = ethtool_op_get_tso,
1565 .set_tso = ethtool_op_set_tso,
1566 .get_regs = cp_get_regs,
1567 .get_wol = cp_get_wol,
1568 .set_wol = cp_set_wol,
1569 .get_strings = cp_get_strings,
1570 .get_ethtool_stats = cp_get_ethtool_stats,
1571 .get_perm_addr = ethtool_op_get_perm_addr,
1572 .get_eeprom_len = cp_get_eeprom_len,
1573 .get_eeprom = cp_get_eeprom,
1574 .set_eeprom = cp_set_eeprom,
1577 static int cp_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
1579 struct cp_private *cp = netdev_priv(dev);
1581 unsigned long flags;
1583 if (!netif_running(dev))
1586 spin_lock_irqsave(&cp->lock, flags);
1587 rc = generic_mii_ioctl(&cp->mii_if, if_mii(rq), cmd, NULL);
1588 spin_unlock_irqrestore(&cp->lock, flags);
1592 /* Serial EEPROM section. */
1594 /* EEPROM_Ctrl bits. */
1595 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
1596 #define EE_CS 0x08 /* EEPROM chip select. */
1597 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
1598 #define EE_WRITE_0 0x00
1599 #define EE_WRITE_1 0x02
1600 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
1601 #define EE_ENB (0x80 | EE_CS)
1603 /* Delay between EEPROM clock transitions.
1604 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
1607 #define eeprom_delay() readl(ee_addr)
1609 /* The EEPROM commands include the alway-set leading bit. */
1610 #define EE_EXTEND_CMD (4)
1611 #define EE_WRITE_CMD (5)
1612 #define EE_READ_CMD (6)
1613 #define EE_ERASE_CMD (7)
1615 #define EE_EWDS_ADDR (0)
1616 #define EE_WRAL_ADDR (1)
1617 #define EE_ERAL_ADDR (2)
1618 #define EE_EWEN_ADDR (3)
1620 #define CP_EEPROM_MAGIC PCI_DEVICE_ID_REALTEK_8139
1622 static void eeprom_cmd_start(void __iomem *ee_addr)
1624 writeb (EE_ENB & ~EE_CS, ee_addr);
1625 writeb (EE_ENB, ee_addr);
1629 static void eeprom_cmd(void __iomem *ee_addr, int cmd, int cmd_len)
1633 /* Shift the command bits out. */
1634 for (i = cmd_len - 1; i >= 0; i--) {
1635 int dataval = (cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1636 writeb (EE_ENB | dataval, ee_addr);
1638 writeb (EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
1641 writeb (EE_ENB, ee_addr);
1645 static void eeprom_cmd_end(void __iomem *ee_addr)
1647 writeb (~EE_CS, ee_addr);
1651 static void eeprom_extend_cmd(void __iomem *ee_addr, int extend_cmd,
1654 int cmd = (EE_EXTEND_CMD << addr_len) | (extend_cmd << (addr_len - 2));
1656 eeprom_cmd_start(ee_addr);
1657 eeprom_cmd(ee_addr, cmd, 3 + addr_len);
1658 eeprom_cmd_end(ee_addr);
1661 static u16 read_eeprom (void __iomem *ioaddr, int location, int addr_len)
1665 void __iomem *ee_addr = ioaddr + Cfg9346;
1666 int read_cmd = location | (EE_READ_CMD << addr_len);
1668 eeprom_cmd_start(ee_addr);
1669 eeprom_cmd(ee_addr, read_cmd, 3 + addr_len);
1671 for (i = 16; i > 0; i--) {
1672 writeb (EE_ENB | EE_SHIFT_CLK, ee_addr);
1675 (retval << 1) | ((readb (ee_addr) & EE_DATA_READ) ? 1 :
1677 writeb (EE_ENB, ee_addr);
1681 eeprom_cmd_end(ee_addr);
1686 static void write_eeprom(void __iomem *ioaddr, int location, u16 val,
1690 void __iomem *ee_addr = ioaddr + Cfg9346;
1691 int write_cmd = location | (EE_WRITE_CMD << addr_len);
1693 eeprom_extend_cmd(ee_addr, EE_EWEN_ADDR, addr_len);
1695 eeprom_cmd_start(ee_addr);
1696 eeprom_cmd(ee_addr, write_cmd, 3 + addr_len);
1697 eeprom_cmd(ee_addr, val, 16);
1698 eeprom_cmd_end(ee_addr);
1700 eeprom_cmd_start(ee_addr);
1701 for (i = 0; i < 20000; i++)
1702 if (readb(ee_addr) & EE_DATA_READ)
1704 eeprom_cmd_end(ee_addr);
1706 eeprom_extend_cmd(ee_addr, EE_EWDS_ADDR, addr_len);
1709 static int cp_get_eeprom_len(struct net_device *dev)
1711 struct cp_private *cp = netdev_priv(dev);
1714 spin_lock_irq(&cp->lock);
1715 size = read_eeprom(cp->regs, 0, 8) == 0x8129 ? 256 : 128;
1716 spin_unlock_irq(&cp->lock);
1721 static int cp_get_eeprom(struct net_device *dev,
1722 struct ethtool_eeprom *eeprom, u8 *data)
1724 struct cp_private *cp = netdev_priv(dev);
1725 unsigned int addr_len;
1727 u32 offset = eeprom->offset >> 1;
1728 u32 len = eeprom->len;
1731 eeprom->magic = CP_EEPROM_MAGIC;
1733 spin_lock_irq(&cp->lock);
1735 addr_len = read_eeprom(cp->regs, 0, 8) == 0x8129 ? 8 : 6;
1737 if (eeprom->offset & 1) {
1738 val = read_eeprom(cp->regs, offset, addr_len);
1739 data[i++] = (u8)(val >> 8);
1743 while (i < len - 1) {
1744 val = read_eeprom(cp->regs, offset, addr_len);
1745 data[i++] = (u8)val;
1746 data[i++] = (u8)(val >> 8);
1751 val = read_eeprom(cp->regs, offset, addr_len);
1755 spin_unlock_irq(&cp->lock);
1759 static int cp_set_eeprom(struct net_device *dev,
1760 struct ethtool_eeprom *eeprom, u8 *data)
1762 struct cp_private *cp = netdev_priv(dev);
1763 unsigned int addr_len;
1765 u32 offset = eeprom->offset >> 1;
1766 u32 len = eeprom->len;
1769 if (eeprom->magic != CP_EEPROM_MAGIC)
1772 spin_lock_irq(&cp->lock);
1774 addr_len = read_eeprom(cp->regs, 0, 8) == 0x8129 ? 8 : 6;
1776 if (eeprom->offset & 1) {
1777 val = read_eeprom(cp->regs, offset, addr_len) & 0xff;
1778 val |= (u16)data[i++] << 8;
1779 write_eeprom(cp->regs, offset, val, addr_len);
1783 while (i < len - 1) {
1784 val = (u16)data[i++];
1785 val |= (u16)data[i++] << 8;
1786 write_eeprom(cp->regs, offset, val, addr_len);
1791 val = read_eeprom(cp->regs, offset, addr_len) & 0xff00;
1792 val |= (u16)data[i];
1793 write_eeprom(cp->regs, offset, val, addr_len);
1796 spin_unlock_irq(&cp->lock);
1800 /* Put the board into D3cold state and wait for WakeUp signal */
1801 static void cp_set_d3_state (struct cp_private *cp)
1803 pci_enable_wake (cp->pdev, 0, 1); /* Enable PME# generation */
1804 pci_set_power_state (cp->pdev, PCI_D3hot);
1807 static int cp_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1809 struct net_device *dev;
1810 struct cp_private *cp;
1813 resource_size_t pciaddr;
1814 unsigned int addr_len, i, pci_using_dac;
1818 static int version_printed;
1819 if (version_printed++ == 0)
1820 printk("%s", version);
1823 pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev);
1825 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
1826 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pci_rev < 0x20) {
1828 "This (id %04x:%04x rev %02x) is not an 8139C+ compatible chip\n",
1829 pdev->vendor, pdev->device, pci_rev);
1830 dev_err(&pdev->dev, "Try the \"8139too\" driver instead.\n");
1834 dev = alloc_etherdev(sizeof(struct cp_private));
1837 SET_MODULE_OWNER(dev);
1838 SET_NETDEV_DEV(dev, &pdev->dev);
1840 cp = netdev_priv(dev);
1843 cp->msg_enable = (debug < 0 ? CP_DEF_MSG_ENABLE : debug);
1844 spin_lock_init (&cp->lock);
1845 cp->mii_if.dev = dev;
1846 cp->mii_if.mdio_read = mdio_read;
1847 cp->mii_if.mdio_write = mdio_write;
1848 cp->mii_if.phy_id = CP_INTERNAL_PHY;
1849 cp->mii_if.phy_id_mask = 0x1f;
1850 cp->mii_if.reg_num_mask = 0x1f;
1851 cp_set_rxbufsize(cp);
1853 rc = pci_enable_device(pdev);
1857 rc = pci_set_mwi(pdev);
1859 goto err_out_disable;
1861 rc = pci_request_regions(pdev, DRV_NAME);
1865 pciaddr = pci_resource_start(pdev, 1);
1868 dev_err(&pdev->dev, "no MMIO resource\n");
1871 if (pci_resource_len(pdev, 1) < CP_REGS_SIZE) {
1873 dev_err(&pdev->dev, "MMIO resource (%llx) too small\n",
1874 (unsigned long long)pci_resource_len(pdev, 1));
1878 /* Configure DMA attributes. */
1879 if ((sizeof(dma_addr_t) > 4) &&
1880 !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK) &&
1881 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
1886 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1889 "No usable DMA configuration, aborting.\n");
1892 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1895 "No usable consistent DMA configuration, "
1901 cp->cpcmd = (pci_using_dac ? PCIDAC : 0) |
1902 PCIMulRW | RxChkSum | CpRxOn | CpTxOn;
1904 regs = ioremap(pciaddr, CP_REGS_SIZE);
1907 dev_err(&pdev->dev, "Cannot map PCI MMIO (%Lx@%Lx)\n",
1908 (unsigned long long)pci_resource_len(pdev, 1),
1909 (unsigned long long)pciaddr);
1912 dev->base_addr = (unsigned long) regs;
1917 /* read MAC address from EEPROM */
1918 addr_len = read_eeprom (regs, 0, 8) == 0x8129 ? 8 : 6;
1919 for (i = 0; i < 3; i++)
1920 ((u16 *) (dev->dev_addr))[i] =
1921 le16_to_cpu (read_eeprom (regs, i + 7, addr_len));
1922 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1924 dev->open = cp_open;
1925 dev->stop = cp_close;
1926 dev->set_multicast_list = cp_set_rx_mode;
1927 dev->hard_start_xmit = cp_start_xmit;
1928 dev->get_stats = cp_get_stats;
1929 dev->do_ioctl = cp_ioctl;
1930 dev->poll = cp_rx_poll;
1931 #ifdef CONFIG_NET_POLL_CONTROLLER
1932 dev->poll_controller = cp_poll_controller;
1934 dev->weight = 16; /* arbitrary? from NAPI_HOWTO.txt. */
1936 dev->change_mtu = cp_change_mtu;
1938 dev->ethtool_ops = &cp_ethtool_ops;
1940 dev->tx_timeout = cp_tx_timeout;
1941 dev->watchdog_timeo = TX_TIMEOUT;
1944 #if CP_VLAN_TAG_USED
1945 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1946 dev->vlan_rx_register = cp_vlan_rx_register;
1947 dev->vlan_rx_kill_vid = cp_vlan_rx_kill_vid;
1951 dev->features |= NETIF_F_HIGHDMA;
1953 #if 0 /* disabled by default until verified */
1954 dev->features |= NETIF_F_TSO;
1957 dev->irq = pdev->irq;
1959 rc = register_netdev(dev);
1963 printk (KERN_INFO "%s: RTL-8139C+ at 0x%lx, "
1964 "%02x:%02x:%02x:%02x:%02x:%02x, "
1968 dev->dev_addr[0], dev->dev_addr[1],
1969 dev->dev_addr[2], dev->dev_addr[3],
1970 dev->dev_addr[4], dev->dev_addr[5],
1973 pci_set_drvdata(pdev, dev);
1975 /* enable busmastering and memory-write-invalidate */
1976 pci_set_master(pdev);
1978 if (cp->wol_enabled)
1979 cp_set_d3_state (cp);
1986 pci_release_regions(pdev);
1988 pci_clear_mwi(pdev);
1990 pci_disable_device(pdev);
1996 static void cp_remove_one (struct pci_dev *pdev)
1998 struct net_device *dev = pci_get_drvdata(pdev);
1999 struct cp_private *cp = netdev_priv(dev);
2001 unregister_netdev(dev);
2003 if (cp->wol_enabled)
2004 pci_set_power_state (pdev, PCI_D0);
2005 pci_release_regions(pdev);
2006 pci_clear_mwi(pdev);
2007 pci_disable_device(pdev);
2008 pci_set_drvdata(pdev, NULL);
2013 static int cp_suspend (struct pci_dev *pdev, pm_message_t state)
2015 struct net_device *dev = pci_get_drvdata(pdev);
2016 struct cp_private *cp = netdev_priv(dev);
2017 unsigned long flags;
2019 if (!netif_running(dev))
2022 netif_device_detach (dev);
2023 netif_stop_queue (dev);
2025 spin_lock_irqsave (&cp->lock, flags);
2027 /* Disable Rx and Tx */
2028 cpw16 (IntrMask, 0);
2029 cpw8 (Cmd, cpr8 (Cmd) & (~RxOn | ~TxOn));
2031 spin_unlock_irqrestore (&cp->lock, flags);
2033 pci_save_state(pdev);
2034 pci_enable_wake(pdev, pci_choose_state(pdev, state), cp->wol_enabled);
2035 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2040 static int cp_resume (struct pci_dev *pdev)
2042 struct net_device *dev = pci_get_drvdata (pdev);
2043 struct cp_private *cp = netdev_priv(dev);
2044 unsigned long flags;
2046 if (!netif_running(dev))
2049 netif_device_attach (dev);
2051 pci_set_power_state(pdev, PCI_D0);
2052 pci_restore_state(pdev);
2053 pci_enable_wake(pdev, PCI_D0, 0);
2055 /* FIXME: sh*t may happen if the Rx ring buffer is depleted */
2056 cp_init_rings_index (cp);
2058 netif_start_queue (dev);
2060 spin_lock_irqsave (&cp->lock, flags);
2062 mii_check_media(&cp->mii_if, netif_msg_link(cp), FALSE);
2064 spin_unlock_irqrestore (&cp->lock, flags);
2068 #endif /* CONFIG_PM */
2070 static struct pci_driver cp_driver = {
2072 .id_table = cp_pci_tbl,
2073 .probe = cp_init_one,
2074 .remove = cp_remove_one,
2076 .resume = cp_resume,
2077 .suspend = cp_suspend,
2081 static int __init cp_init (void)
2084 printk("%s", version);
2086 return pci_register_driver(&cp_driver);
2089 static void __exit cp_exit (void)
2091 pci_unregister_driver (&cp_driver);
2094 module_init(cp_init);
2095 module_exit(cp_exit);